1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1488 2022/06/11 14:20:42 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use HTTP::Date;
75: use Image::Magick;
76: use CGI::Cookie;
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $deftex
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab $passwdmin);
83:
84: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
85: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
86: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
87: %courseownerbuf, %coursetypebuf,$locknum);
88:
89: use IO::Socket;
90: use GDBM_File;
91: use HTML::LCParser;
92: use Fcntl qw(:flock);
93: use Storable qw(thaw nfreeze);
94: use Time::HiRes qw( sleep gettimeofday tv_interval );
95: use Cache::Memcached;
96: use Digest::MD5;
97: use Math::Random;
98: use File::MMagic;
99: use Net::CIDR;
100: use Sys::Hostname::FQDN();
101: use LONCAPA qw(:DEFAULT :match);
102: use LONCAPA::Configuration;
103: use LONCAPA::lonmetadata;
104: use LONCAPA::Lond;
105: use LONCAPA::LWPReq;
106: use LONCAPA::transliterate;
107:
108: use File::Copy;
109:
110: my $readit;
111: my $max_connection_retries = 20; # Or some such value.
112:
113: require Exporter;
114:
115: our @ISA = qw (Exporter);
116: our @EXPORT = qw(%env);
117:
118:
119: # ------------------------------------ Logging (parameters, docs, slots, roles)
120: {
121: my $logid;
122: sub write_log {
123: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
124: if ($context eq 'course') {
125: if (($cnum eq '') || ($cdom eq '')) {
126: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
127: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
128: }
129: }
130: $logid ++;
131: my $now = time();
132: my $id=$now.'00000'.$$.'00000'.$logid;
133: my $ip = &get_requestor_ip();
134: my $logentry = {
135: $id => {
136: 'exe_uname' => $env{'user.name'},
137: 'exe_udom' => $env{'user.domain'},
138: 'exe_time' => $now,
139: 'exe_ip' => $ip,
140: 'delflag' => $delflag,
141: 'logentry' => $storehash,
142: 'uname' => $uname,
143: 'udom' => $udom,
144: }
145: };
146: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
147: }
148: }
149:
150: sub logtouch {
151: my $execdir=$perlvar{'lonDaemons'};
152: unless (-e "$execdir/logs/lonnet.log") {
153: open(my $fh,">>","$execdir/logs/lonnet.log");
154: close $fh;
155: }
156: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
157: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
158: }
159:
160: sub logthis {
161: my $message=shift;
162: my $execdir=$perlvar{'lonDaemons'};
163: my $now=time;
164: my $local=localtime($now);
165: if (open(my $fh,">>","$execdir/logs/lonnet.log")) {
166: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
167: print $fh $logstring;
168: close($fh);
169: }
170: return 1;
171: }
172:
173: sub logperm {
174: my $message=shift;
175: my $execdir=$perlvar{'lonDaemons'};
176: my $now=time;
177: my $local=localtime($now);
178: if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
179: print $fh "$now:$message:$local\n";
180: close($fh);
181: }
182: return 1;
183: }
184:
185: sub create_connection {
186: my ($hostname,$lonid) = @_;
187: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
188: Type => SOCK_STREAM,
189: Timeout => 10);
190: return 0 if (!$client);
191: print $client (join(':',$hostname,$lonid,&machine_ids($hostname),$loncaparevs{$lonid})."\n");
192: my $result = <$client>;
193: chomp($result);
194: return 1 if ($result eq 'done');
195: return 0;
196: }
197:
198: sub get_server_timezone {
199: my ($cnum,$cdom) = @_;
200: my $home=&homeserver($cnum,$cdom);
201: if ($home ne 'no_host') {
202: my $cachetime = 24*3600;
203: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
204: if (defined($cached)) {
205: return $timezone;
206: } else {
207: my $timezone = &reply('servertimezone',$home);
208: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
209: }
210: }
211: }
212:
213: sub get_server_distarch {
214: my ($lonhost,$ignore_cache) = @_;
215: if (defined($lonhost)) {
216: if (!defined(&hostname($lonhost))) {
217: return;
218: }
219: my $cachetime = 12*3600;
220: if (!$ignore_cache) {
221: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
222: if (defined($cached)) {
223: return $distarch;
224: }
225: }
226: my $rep = &reply('serverdistarch',$lonhost);
227: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
228: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
229: $rep eq '') {
230: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
231: }
232: }
233: return;
234: }
235:
236: sub get_servercerts_info {
237: my ($lonhost,$hostname,$context) = @_;
238: return if ($lonhost eq '');
239: if ($hostname eq '') {
240: $hostname = &hostname($lonhost);
241: }
242: return if ($hostname eq '');
243: my ($rep,$uselocal);
244: if ($context eq 'install') {
245: $uselocal = 1;
246: } elsif (grep { $_ eq $lonhost } ¤t_machine_ids()) {
247: $uselocal = 1;
248: }
249: if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
250: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
251: if ($distro eq '') {
252: $uselocal = 0;
253: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
254: if ($1 < 6) {
255: $uselocal = 0;
256: }
257: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
258: if ($1 < 12) {
259: $uselocal = 0;
260: }
261: }
262: }
263: if ($uselocal) {
264: $rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
265: } else {
266: $rep=&reply('servercerts',$lonhost);
267: }
268: my ($result,%returnhash);
269: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
270: ($rep eq 'unknown_cmd')) {
271: $result = $rep;
272: } else {
273: $result = 'ok';
274: my @pairs=split(/\&/,$rep);
275: foreach my $item (@pairs) {
276: my ($key,$value)=split(/=/,$item,2);
277: my $what = &unescape($key);
278: $returnhash{$what}=&thaw_unescape($value);
279: }
280: }
281: return ($result,\%returnhash);
282: }
283:
284: sub get_server_loncaparev {
285: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
286: if (defined($lonhost)) {
287: if (!defined(&hostname($lonhost))) {
288: undef($lonhost);
289: }
290: }
291: if (!defined($lonhost)) {
292: if (defined(&domain($dom,'primary'))) {
293: $lonhost=&domain($dom,'primary');
294: if ($lonhost eq 'no_host') {
295: undef($lonhost);
296: }
297: }
298: }
299: if (defined($lonhost)) {
300: my $cachetime = 12*3600;
301: if (!$ignore_cache) {
302: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
303: if (defined($cached)) {
304: return $loncaparev;
305: }
306: }
307: my ($answer,$loncaparev);
308: my @ids=¤t_machine_ids();
309: if (grep(/^\Q$lonhost\E$/,@ids)) {
310: $answer = $perlvar{'lonVersion'};
311: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
312: $loncaparev = $1;
313: }
314: } else {
315: $answer = &reply('serverloncaparev',$lonhost);
316: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
317: if ($caller eq 'loncron') {
318: my $hostname = &hostname($lonhost);
319: my $protocol = $protocol{$lonhost};
320: $protocol = 'http' if ($protocol ne 'https');
321: my $url = $protocol.'://'.$hostname.'/adm/about.html';
322: my $request=new HTTP::Request('GET',$url);
323: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
324: unless ($response->is_error()) {
325: my $content = $response->content;
326: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
327: $loncaparev = $1;
328: }
329: }
330: } else {
331: $loncaparev = $loncaparevs{$lonhost};
332: }
333: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
334: $loncaparev = $1;
335: }
336: }
337: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
338: }
339: }
340:
341: sub get_server_homeID {
342: my ($hostname,$ignore_cache,$caller) = @_;
343: unless ($ignore_cache) {
344: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
345: if (defined($cached)) {
346: return $serverhomeID;
347: }
348: }
349: my $cachetime = 12*3600;
350: my $serverhomeID;
351: if ($caller eq 'loncron') {
352: my @machine_ids = &machine_ids($hostname);
353: foreach my $id (@machine_ids) {
354: my $response = &reply('serverhomeID',$id);
355: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
356: $serverhomeID = $response;
357: last;
358: }
359: }
360: if ($serverhomeID eq '') {
361: $serverhomeID = $machine_ids[-1];
362: }
363: } else {
364: $serverhomeID = $serverhomeIDs{$hostname};
365: }
366: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
367: }
368:
369: sub get_remote_globals {
370: my ($lonhost,$whathash,$ignore_cache) = @_;
371: my ($result,%returnhash,%whatneeded);
372: if (ref($whathash) eq 'HASH') {
373: foreach my $what (sort(keys(%{$whathash}))) {
374: my $hashid = $lonhost.'-'.$what;
375: my ($response,$cached);
376: unless ($ignore_cache) {
377: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
378: }
379: if (defined($cached)) {
380: $returnhash{$what} = $response;
381: } else {
382: $whatneeded{$what} = 1;
383: }
384: }
385: if (keys(%whatneeded) == 0) {
386: $result = 'ok';
387: } else {
388: my $requested = &freeze_escape(\%whatneeded);
389: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
390: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
391: ($rep eq 'unknown_cmd')) {
392: $result = $rep;
393: } else {
394: $result = 'ok';
395: my @pairs=split(/\&/,$rep);
396: foreach my $item (@pairs) {
397: my ($key,$value)=split(/=/,$item,2);
398: my $what = &unescape($key);
399: my $hashid = $lonhost.'-'.$what;
400: $returnhash{$what}=&thaw_unescape($value);
401: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
402: }
403: }
404: }
405: }
406: return ($result,\%returnhash);
407: }
408:
409: sub remote_devalidate_cache {
410: my ($lonhost,$cachekeys) = @_;
411: my $items;
412: return unless (ref($cachekeys) eq 'ARRAY');
413: my $cachestr = join('&',@{$cachekeys});
414: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
415: return $response;
416: }
417:
418: # -------------------------------------------------- Non-critical communication
419: sub subreply {
420: my ($cmd,$server)=@_;
421: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
422: #
423: # With loncnew process trimming, there's a timing hole between lonc server
424: # process exit and the master server picking up the listen on the AF_UNIX
425: # socket. In that time interval, a lock file will exist:
426:
427: my $lockfile=$peerfile.".lock";
428: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
429: sleep(0.1);
430: }
431: # At this point, either a loncnew parent is listening or an old lonc
432: # or loncnew child is listening so we can connect or everything's dead.
433: #
434: # We'll give the connection a few tries before abandoning it. If
435: # connection is not possible, we'll con_lost back to the client.
436: #
437: my $client;
438: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
439: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
440: Type => SOCK_STREAM,
441: Timeout => 10);
442: if ($client) {
443: last; # Connected!
444: } else {
445: &create_connection(&hostname($server),$server);
446: }
447: sleep(0.1); # Try again later if failed connection.
448: }
449: my $answer;
450: if ($client) {
451: print $client "sethost:$server:$cmd\n";
452: $answer=<$client>;
453: if (!$answer) { $answer="con_lost"; }
454: chomp($answer);
455: } else {
456: $answer = 'con_lost'; # Failed connection.
457: }
458: return $answer;
459: }
460:
461: sub reply {
462: my ($cmd,$server)=@_;
463: unless (defined(&hostname($server))) { return 'no_such_host'; }
464: my $answer=subreply($cmd,$server);
465: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
466: my $logged = $cmd;
467: if ($cmd =~ /^encrypt:([^:]+):/) {
468: my $subcmd = $1;
469: if (($subcmd eq 'auth') || ($subcmd eq 'passwd') ||
470: ($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
471: ($subcmd eq 'putdom') || ($subcmd eq 'autoexportgrades') ||
472: ($subcmd eq 'put')) {
473: (undef,undef,my @rest) = split(/:/,$cmd);
474: if (($subcmd eq 'auth') || ($subcmd eq 'putdom')) {
475: splice(@rest,2,1,'Hidden');
476: } elsif ($subcmd eq 'passwd') {
477: splice(@rest,2,2,('Hidden','Hidden'));
478: } elsif (($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
479: ($subcmd eq 'autoexportgrades') || ($subcmd eq 'put')) {
480: splice(@rest,3,1,'Hidden');
481: }
482: $logged = join(':',('encrypt:'.$subcmd,@rest));
483: }
484: }
485: &logthis("<font color=\"blue\">WARNING:".
486: " $logged to $server returned $answer</font>");
487: }
488: return $answer;
489: }
490:
491: # ----------------------------------------------------------- Send USR1 to lonc
492:
493: sub reconlonc {
494: my ($lonid) = @_;
495: if ($lonid) {
496: my $hostname = &hostname($lonid);
497: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
498: if ($hostname && -e $peerfile) {
499: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
500: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
501: Type => SOCK_STREAM,
502: Timeout => 10);
503: if ($client) {
504: print $client ("reset_retries\n");
505: my $answer=<$client>;
506: #reset just this one.
507: }
508: }
509: return;
510: }
511:
512: &logthis("Trying to reconnect lonc");
513: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
514: if (open(my $fh,"<",$loncfile)) {
515: my $loncpid=<$fh>;
516: chomp($loncpid);
517: if (kill 0 => $loncpid) {
518: &logthis("lonc at pid $loncpid responding, sending USR1");
519: kill USR1 => $loncpid;
520: sleep 1;
521: } else {
522: &logthis(
523: "<font color=\"blue\">WARNING:".
524: " lonc at pid $loncpid not responding, giving up</font>");
525: }
526: } else {
527: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
528: }
529: }
530:
531: # ------------------------------------------------------ Critical communication
532:
533: sub critical {
534: my ($cmd,$server)=@_;
535: unless (&hostname($server)) {
536: &logthis("<font color=\"blue\">WARNING:".
537: " Critical message to unknown server ($server)</font>");
538: return 'no_such_host';
539: }
540: my $answer=reply($cmd,$server);
541: if ($answer eq 'con_lost') {
542: &reconlonc($server);
543: my $answer=reply($cmd,$server);
544: if ($answer eq 'con_lost') {
545: my $now=time;
546: my $middlename=$cmd;
547: $middlename=substr($middlename,0,16);
548: $middlename=~s/\W//g;
549: my $dfilename=
550: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
551: $dumpcount++;
552: {
553: my $dfh;
554: if (open($dfh,">",$dfilename)) {
555: print $dfh "$cmd\n";
556: close($dfh);
557: }
558: }
559: sleep 1;
560: my $wcmd='';
561: {
562: my $dfh;
563: if (open($dfh,"<",$dfilename)) {
564: $wcmd=<$dfh>;
565: close($dfh);
566: }
567: }
568: chomp($wcmd);
569: if ($wcmd eq $cmd) {
570: &logthis("<font color=\"blue\">WARNING: ".
571: "Connection buffer $dfilename: $cmd</font>");
572: &logperm("D:$server:$cmd");
573: return 'con_delayed';
574: } else {
575: &logthis("<font color=\"red\">CRITICAL:"
576: ." Critical connection failed: $server $cmd</font>");
577: &logperm("F:$server:$cmd");
578: return 'con_failed';
579: }
580: }
581: }
582: return $answer;
583: }
584:
585: # ------------------------------------------- check if return value is an error
586:
587: sub error {
588: my ($result) = @_;
589: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
590: if ($2 == 2) { return undef; }
591: return $1;
592: }
593: return undef;
594: }
595:
596: sub convert_and_load_session_env {
597: my ($lonidsdir,$handle)=@_;
598: my @profile;
599: {
600: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
601: if (!$opened) {
602: return 0;
603: }
604: flock($idf,LOCK_SH);
605: @profile=<$idf>;
606: close($idf);
607: }
608: my %temp_env;
609: foreach my $line (@profile) {
610: if ($line !~ m/=/) {
611: return 0;
612: }
613: chomp($line);
614: my ($envname,$envvalue)=split(/=/,$line,2);
615: $temp_env{&unescape($envname)} = &unescape($envvalue);
616: }
617: unlink("$lonidsdir/$handle.id");
618: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
619: 0640)) {
620: %disk_env = %temp_env;
621: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
622: untie(%disk_env);
623: }
624: return 1;
625: }
626:
627: # ------------------------------------------- Transfer profile into environment
628: my $env_loaded;
629: sub transfer_profile_to_env {
630: my ($lonidsdir,$handle,$force_transfer) = @_;
631: if (!$force_transfer && $env_loaded) { return; }
632:
633: if (!defined($lonidsdir)) {
634: $lonidsdir = $perlvar{'lonIDsDir'};
635: }
636: if (!defined($handle)) {
637: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
638: }
639:
640: my $convert;
641: {
642: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
643: if (!$opened) {
644: return;
645: }
646: flock($idf,LOCK_SH);
647: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
648: &GDBM_READER(),0640)) {
649: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
650: untie(%disk_env);
651: } else {
652: $convert = 1;
653: }
654: }
655: if ($convert) {
656: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
657: &logthis("Failed to load session, or convert session.");
658: }
659: }
660:
661: my %remove;
662: while ( my $envname = each(%env) ) {
663: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
664: if ($time < time-300) {
665: $remove{$key}++;
666: }
667: }
668: }
669:
670: $env{'user.environment'} = "$lonidsdir/$handle.id";
671: $env_loaded=1;
672: foreach my $expired_key (keys(%remove)) {
673: &delenv($expired_key);
674: }
675: }
676:
677: # ---------------------------------------------------- Check for valid session
678: sub check_for_valid_session {
679: my ($r,$name,$userhashref,$domref) = @_;
680: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
681: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
682: if ($name eq 'lonDAV') {
683: $lonidsdir=$r->dir_config('lonDAVsessDir');
684: } else {
685: $lonidsdir=$r->dir_config('lonIDsDir');
686: if ($name eq '') {
687: $name = 'lonID';
688: }
689: }
690: if ($name eq 'lonID') {
691: $secure = 'lonSID';
692: $linkname = 'lonLinkID';
693: $pubname = 'lonPubID';
694: if (exists($cookies{$secure})) {
695: $lonid=$cookies{$secure};
696: } elsif (exists($cookies{$name})) {
697: $lonid=$cookies{$name};
698: } elsif ((exists($cookies{$linkname})) && ($ENV{'SERVER_PORT'} != 443)) {
699: $lonid=$cookies{$linkname};
700: } elsif (exists($cookies{$pubname})) {
701: $lonid=$cookies{$pubname};
702: }
703: } else {
704: $lonid=$cookies{$name};
705: }
706: return undef if (!$lonid);
707:
708: my $handle=&LONCAPA::clean_handle($lonid->value);
709: if (-l "$lonidsdir/$handle.id") {
710: my $link = readlink("$lonidsdir/$handle.id");
711: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
712: $handle = $1;
713: }
714: }
715: if (!-e "$lonidsdir/$handle.id") {
716: if ((ref($domref)) && ($name eq 'lonID') &&
717: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
718: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
719: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
720: $$domref = $possudom;
721: }
722: }
723: return undef;
724: }
725:
726: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
727: return undef if (!$opened);
728:
729: flock($idf,LOCK_SH);
730: my %disk_env;
731: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
732: &GDBM_READER(),0640)) {
733: return undef;
734: }
735:
736: if (!defined($disk_env{'user.name'})
737: || !defined($disk_env{'user.domain'})) {
738: untie(%disk_env);
739: return undef;
740: }
741:
742: if (ref($userhashref) eq 'HASH') {
743: $userhashref->{'name'} = $disk_env{'user.name'};
744: $userhashref->{'domain'} = $disk_env{'user.domain'};
745: if ($disk_env{'request.role'}) {
746: $userhashref->{'role'} = $disk_env{'request.role'};
747: }
748: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
749: if ($userhashref->{'lti'}) {
750: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
751: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
752: }
753: }
754: untie(%disk_env);
755:
756: return $handle;
757: }
758:
759: sub timed_flock {
760: my ($file,$lock_type) = @_;
761: my $failed=0;
762: eval {
763: local $SIG{__DIE__}='DEFAULT';
764: local $SIG{ALRM}=sub {
765: $failed=1;
766: die("failed lock");
767: };
768: alarm(13);
769: flock($file,$lock_type);
770: alarm(0);
771: };
772: if ($failed) {
773: return undef;
774: } else {
775: return 1;
776: }
777: }
778:
779: sub get_sessionfile_vars {
780: my ($handle,$lonidsdir,$storearr) = @_;
781: my %returnhash;
782: unless (ref($storearr) eq 'ARRAY') {
783: return %returnhash;
784: }
785: if (-l "$lonidsdir/$handle.id") {
786: my $link = readlink("$lonidsdir/$handle.id");
787: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
788: $handle = $1;
789: }
790: }
791: if ((-e "$lonidsdir/$handle.id") &&
792: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
793: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
794: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
795: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
796: flock($idf,LOCK_SH);
797: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
798: &GDBM_READER(),0640)) {
799: foreach my $item (@{$storearr}) {
800: $returnhash{$item} = $disk_env{$item};
801: }
802: untie(%disk_env);
803: }
804: }
805: }
806: }
807: return %returnhash;
808: }
809:
810: # ---------------------------------------------------------- Append Environment
811:
812: sub appenv {
813: my ($newenv,$roles) = @_;
814: if (ref($newenv) eq 'HASH') {
815: foreach my $key (keys(%{$newenv})) {
816: my $refused = 0;
817: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
818: $refused = 1;
819: if (ref($roles) eq 'ARRAY') {
820: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
821: if (grep(/^\Q$role\E$/,@{$roles})) {
822: $refused = 0;
823: }
824: }
825: }
826: if ($refused) {
827: &logthis("<font color=\"blue\">WARNING: ".
828: "Attempt to modify environment ".$key." to ".$newenv->{$key}
829: .'</font>');
830: delete($newenv->{$key});
831: } else {
832: $env{$key}=$newenv->{$key};
833: }
834: }
835: my $lonids = $perlvar{'lonIDsDir'};
836: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
837: my $opened = open(my $env_file,'+<',$env{'user.environment'});
838: if ($opened
839: && &timed_flock($env_file,LOCK_EX)
840: &&
841: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
842: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
843: while (my ($key,$value) = each(%{$newenv})) {
844: $disk_env{$key} = $value;
845: }
846: untie(%disk_env);
847: }
848: }
849: }
850: return 'ok';
851: }
852: # ----------------------------------------------------- Delete from Environment
853:
854: sub delenv {
855: my ($delthis,$regexp,$roles) = @_;
856: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
857: my $refused = 1;
858: if (ref($roles) eq 'ARRAY') {
859: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
860: if (grep(/^\Q$role\E$/,@{$roles})) {
861: $refused = 0;
862: }
863: }
864: if ($refused) {
865: &logthis("<font color=\"blue\">WARNING: ".
866: "Attempt to delete from environment ".$delthis);
867: return 'error';
868: }
869: }
870: my $opened = open(my $env_file,'+<',$env{'user.environment'});
871: if ($opened
872: && &timed_flock($env_file,LOCK_EX)
873: &&
874: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
875: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
876: foreach my $key (keys(%disk_env)) {
877: if ($regexp) {
878: if ($key=~/^$delthis/) {
879: delete($env{$key});
880: delete($disk_env{$key});
881: }
882: } else {
883: if ($key=~/^\Q$delthis\E/) {
884: delete($env{$key});
885: delete($disk_env{$key});
886: }
887: }
888: }
889: untie(%disk_env);
890: }
891: return 'ok';
892: }
893:
894: sub get_env_multiple {
895: my ($name) = @_;
896: my @values;
897: if (defined($env{$name})) {
898: # exists is it an array
899: if (ref($env{$name})) {
900: @values=@{ $env{$name} };
901: } else {
902: $values[0]=$env{$name};
903: }
904: }
905: return(@values);
906: }
907:
908: # ------------------------------------------------------------------- Locking
909:
910: sub set_lock {
911: my ($text)=@_;
912: $locknum++;
913: my $id=$$.'-'.$locknum;
914: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
915: 'session.lock.'.$id => $text});
916: return $id;
917: }
918:
919: sub get_locks {
920: my $num=0;
921: my %texts=();
922: foreach my $lock (split(/\,/,$env{'session.locks'})) {
923: if ($lock=~/\w/) {
924: $num++;
925: $texts{$lock}=$env{'session.lock.'.$lock};
926: }
927: }
928: return ($num,%texts);
929: }
930:
931: sub remove_lock {
932: my ($id)=@_;
933: my $newlocks='';
934: foreach my $lock (split(/\,/,$env{'session.locks'})) {
935: if (($lock=~/\w/) && ($lock ne $id)) {
936: $newlocks.=','.$lock;
937: }
938: }
939: &appenv({'session.locks' => $newlocks});
940: &delenv('session.lock.'.$id);
941: }
942:
943: sub remove_all_locks {
944: my $activelocks=$env{'session.locks'};
945: foreach my $lock (split(/\,/,$env{'session.locks'})) {
946: if ($lock=~/\w/) {
947: &remove_lock($lock);
948: }
949: }
950: }
951:
952:
953: # ------------------------------------------ Find out current server userload
954: sub userload {
955: my $numusers=0;
956: {
957: opendir(LONIDS,$perlvar{'lonIDsDir'});
958: my $filename;
959: my $curtime=time;
960: while ($filename=readdir(LONIDS)) {
961: next if ($filename eq '.' || $filename eq '..');
962: next if ($filename =~ /publicuser_\d+\.id/);
963: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
964: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
965: if ($curtime-$mtime < 1800) { $numusers++; }
966: }
967: closedir(LONIDS);
968: }
969: my $userloadpercent=0;
970: my $maxuserload=$perlvar{'lonUserLoadLim'};
971: if ($maxuserload) {
972: $userloadpercent=100*$numusers/$maxuserload;
973: }
974: $userloadpercent=sprintf("%.2f",$userloadpercent);
975: return $userloadpercent;
976: }
977:
978: # ------------------------------ Find server with least workload from spare.tab
979:
980: sub spareserver {
981: my ($r,$loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
982: my $spare_server;
983: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
984: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
985: : $userloadpercent;
986: my ($uint_dom,$remotesessions);
987: if (($udom ne '') && (&domain($udom) ne '')) {
988: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
989: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
990: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
991: $remotesessions = $udomdefaults{'remotesessions'};
992: }
993: my $spareshash = &this_host_spares($udom);
994: if (ref($spareshash) eq 'HASH') {
995: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
996: foreach my $try_server (@{ $spareshash->{'primary'} }) {
997: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
998: $try_server));
999: ($spare_server, $lowest_load) =
1000: &compare_server_load($try_server, $spare_server, $lowest_load);
1001: }
1002: }
1003:
1004: my $found_server = ($spare_server ne '' && $lowest_load < 100);
1005:
1006: if (!$found_server) {
1007: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1008: foreach my $try_server (@{ $spareshash->{'default'} }) {
1009: next unless (&spare_can_host($udom,$uint_dom,
1010: $remotesessions,$try_server));
1011: ($spare_server, $lowest_load) =
1012: &compare_server_load($try_server, $spare_server, $lowest_load);
1013: }
1014: }
1015: }
1016: }
1017:
1018: if (!$want_server_name) {
1019: if (defined($spare_server)) {
1020: my $hostname = &hostname($spare_server);
1021: if (defined($hostname)) {
1022: my $protocol = 'http';
1023: if ($protocol{$spare_server} eq 'https') {
1024: $protocol = $protocol{$spare_server};
1025: }
1026: my $alias = &Apache::lonnet::use_proxy_alias($r,$spare_server);
1027: $hostname = $alias if ($alias ne '');
1028: $spare_server = $protocol.'://'.$hostname;
1029: }
1030: }
1031: }
1032: return $spare_server;
1033: }
1034:
1035: sub compare_server_load {
1036: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1037:
1038: if ($required) {
1039: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1040: my $remoterev = &get_server_loncaparev(undef,$try_server);
1041: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1042: if (($major eq '' && $minor eq '') ||
1043: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1044: return ($spare_server,$lowest_load);
1045: }
1046: }
1047:
1048: my $loadans = &reply('load', $try_server);
1049: my $userloadans = &reply('userload',$try_server);
1050:
1051: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1052: return ($spare_server, $lowest_load); #didn't get a number from the server
1053: }
1054:
1055: my $load;
1056: if ($loadans =~ /\d/) {
1057: if ($userloadans =~ /\d/) {
1058: #both are numbers, pick the bigger one
1059: $load = ($loadans > $userloadans) ? $loadans
1060: : $userloadans;
1061: } else {
1062: $load = $loadans;
1063: }
1064: } else {
1065: $load = $userloadans;
1066: }
1067:
1068: if (($load =~ /\d/) && ($load < $lowest_load)) {
1069: $spare_server = $try_server;
1070: $lowest_load = $load;
1071: }
1072: return ($spare_server,$lowest_load);
1073: }
1074:
1075: # --------------------------- ask offload servers if user already has a session
1076: sub find_existing_session {
1077: my ($udom,$uname) = @_;
1078: my $spareshash = &this_host_spares($udom);
1079: if (ref($spareshash) eq 'HASH') {
1080: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1081: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1082: return $try_server if (&has_user_session($try_server, $udom, $uname));
1083: }
1084: }
1085: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1086: foreach my $try_server (@{ $spareshash->{'default'} }) {
1087: return $try_server if (&has_user_session($try_server, $udom, $uname));
1088: }
1089: }
1090: }
1091: return;
1092: }
1093:
1094: sub delusersession {
1095: my ($lonid,$udom,$uname) = @_;
1096: my $uprimary_id = &domain($udom,'primary');
1097: my $uintdom = &internet_dom($uprimary_id);
1098: my $intdom = &internet_dom($lonid);
1099: my $serverhomedom = &host_domain($lonid);
1100: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1101: return &reply(join(':','delusersession',
1102: map {&escape($_)} ($udom,$uname)),$lonid);
1103: }
1104: return;
1105: }
1106:
1107: # check if user's browser sent load balancer cookie and server still has session
1108: # and is not overloaded.
1109: sub check_for_balancer_cookie {
1110: my ($r,$update_mtime) = @_;
1111: my ($otherserver,$cookie);
1112: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1113: if (exists($cookies{'balanceID'})) {
1114: my $balid = $cookies{'balanceID'};
1115: $cookie=&LONCAPA::clean_handle($balid->value);
1116: my $balancedir=$r->dir_config('lonBalanceDir');
1117: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1118: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1119: my ($possudom,$possuname) = ($1,$2);
1120: my $has_session = 0;
1121: if ((&domain($possudom) ne '') &&
1122: (&homeserver($possuname,$possudom) ne 'no_host')) {
1123: my $try_server;
1124: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1125: if ($opened) {
1126: flock($idf,LOCK_SH);
1127: while (my $line = <$idf>) {
1128: chomp($line);
1129: if (&hostname($line) ne '') {
1130: $try_server = $line;
1131: last;
1132: }
1133: }
1134: close($idf);
1135: if (($try_server) &&
1136: (&has_user_session($try_server,$possudom,$possuname))) {
1137: my $lowest_load = 30000;
1138: ($otherserver,$lowest_load) =
1139: &compare_server_load($try_server,undef,$lowest_load);
1140: if ($otherserver ne '' && $lowest_load < 100) {
1141: $has_session = 1;
1142: } else {
1143: undef($otherserver);
1144: }
1145: }
1146: }
1147: }
1148: if ($has_session) {
1149: if ($update_mtime) {
1150: my $atime = my $mtime = time;
1151: utime($atime,$mtime,"$balancedir/$cookie.id");
1152: }
1153: } else {
1154: unlink("$balancedir/$cookie.id");
1155: }
1156: }
1157: }
1158: }
1159: return ($otherserver,$cookie);
1160: }
1161:
1162: sub updatebalcookie {
1163: my ($cookie,$balancer,$lastentry)=@_;
1164: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1165: my ($udom,$uname) = ($1,$2);
1166: my $uprimary_id = &domain($udom,'primary');
1167: my $uintdom = &internet_dom($uprimary_id);
1168: my $intdom = &internet_dom($balancer);
1169: my $serverhomedom = &host_domain($balancer);
1170: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1171: return &reply('updatebalcookie:'.&escape($cookie).':'.&escape($lastentry),$balancer);
1172: }
1173: }
1174: return;
1175: }
1176:
1177: sub delbalcookie {
1178: my ($cookie,$balancer) =@_;
1179: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1180: my ($udom,$uname) = ($1,$2);
1181: my $uprimary_id = &domain($udom,'primary');
1182: my $uintdom = &internet_dom($uprimary_id);
1183: my $intdom = &internet_dom($balancer);
1184: my $serverhomedom = &host_domain($balancer);
1185: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1186: return &reply('delbalcookie:'.&escape($cookie),$balancer);
1187: }
1188: }
1189: }
1190:
1191: # -------------------------------- ask if server already has a session for user
1192: sub has_user_session {
1193: my ($lonid,$udom,$uname) = @_;
1194: my $result = &reply(join(':','userhassession',
1195: map {&escape($_)} ($udom,$uname)),$lonid);
1196: return 1 if ($result eq 'ok');
1197:
1198: return 0;
1199: }
1200:
1201: # --------- determine least loaded server in a user's domain which allows login
1202:
1203: sub choose_server {
1204: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1205: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1206: my %servers = &get_servers($udom);
1207: my $lowest_load = 30000;
1208: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1209: if ($skiploadbal) {
1210: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1211: unless (defined($cached)) {
1212: my $cachetime = 60*60*24;
1213: my %domconfig =
1214: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1215: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1216: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1217: $cachetime);
1218: }
1219: }
1220: }
1221: foreach my $lonhost (keys(%servers)) {
1222: if ($skiploadbal) {
1223: if (ref($balancers) eq 'HASH') {
1224: next if (exists($balancers->{$lonhost}));
1225: }
1226: }
1227: my $loginvia;
1228: if ($checkloginvia) {
1229: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1230: if ($loginvia) {
1231: my ($server,$path) = split(/:/,$loginvia);
1232: ($login_host, $lowest_load) =
1233: &compare_server_load($server, $login_host, $lowest_load, $required);
1234: if ($login_host eq $server) {
1235: $portal_path = $path;
1236: $isredirect = 1;
1237: }
1238: } else {
1239: ($login_host, $lowest_load) =
1240: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1241: if ($login_host eq $lonhost) {
1242: $portal_path = '';
1243: $isredirect = '';
1244: }
1245: }
1246: } else {
1247: ($login_host, $lowest_load) =
1248: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1249: }
1250: }
1251: if ($login_host ne '') {
1252: $hostname = &hostname($login_host);
1253: }
1254: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1255: }
1256:
1257: sub get_course_sessions {
1258: my ($cnum,$cdom,$lastactivity) = @_;
1259: my %servers = &internet_dom_servers($cdom);
1260: my %returnhash;
1261: foreach my $server (sort(keys(%servers))) {
1262: my $rep = &reply("coursesessions:$cdom:$cnum:$lastactivity",$server);
1263: my @pairs=split(/\&/,$rep);
1264: unless (($rep eq 'unknown_cmd') || ($rep =~ /^error/)) {
1265: foreach my $item (@pairs) {
1266: my ($key,$value)=split(/=/,$item,2);
1267: $key = &unescape($key);
1268: next if ($key =~ /^error: 2 /);
1269: if (exists($returnhash{$key})) {
1270: next if ($value < $returnhash{$key});
1271: }
1272: $returnhash{$key}=$value;
1273: }
1274: }
1275: }
1276: return %returnhash;
1277: }
1278:
1279: # --------------------------------------------- Try to change a user's password
1280:
1281: sub changepass {
1282: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1283: $currentpass = &escape($currentpass);
1284: $newpass = &escape($newpass);
1285: my $lonhost = $perlvar{'lonHostID'};
1286: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1287: $server);
1288: if (! $answer) {
1289: &logthis("No reply on password change request to $server ".
1290: "by $uname in domain $udom.");
1291: } elsif ($answer =~ "^ok") {
1292: &logthis("$uname in $udom successfully changed their password ".
1293: "on $server.");
1294: } elsif ($answer =~ "^pwchange_failure") {
1295: &logthis("$uname in $udom was unable to change their password ".
1296: "on $server. The action was blocked by either lcpasswd ".
1297: "or pwchange");
1298: } elsif ($answer =~ "^non_authorized") {
1299: &logthis("$uname in $udom did not get their password correct when ".
1300: "attempting to change it on $server.");
1301: } elsif ($answer =~ "^auth_mode_error") {
1302: &logthis("$uname in $udom attempted to change their password despite ".
1303: "not being locally or internally authenticated on $server.");
1304: } elsif ($answer =~ "^unknown_user") {
1305: &logthis("$uname in $udom attempted to change their password ".
1306: "on $server but were unable to because $server is not ".
1307: "their home server.");
1308: } elsif ($answer =~ "^refused") {
1309: &logthis("$server refused to change $uname in $udom password because ".
1310: "it was sent an unencrypted request to change the password.");
1311: } elsif ($answer =~ "invalid_client") {
1312: &logthis("$server refused to change $uname in $udom password because ".
1313: "it was a reset by e-mail originating from an invalid server.");
1314: } elsif ($answer =~ "^prioruse") {
1315: &logthis("$server refused to change $uname in $udom password because ".
1316: "the password had been used before");
1317: }
1318: return $answer;
1319: }
1320:
1321: # ----------------------- Try to determine user's current authentication scheme
1322:
1323: sub queryauthenticate {
1324: my ($uname,$udom)=@_;
1325: my $uhome=&homeserver($uname,$udom);
1326: if ((!$uhome) || ($uhome eq 'no_host')) {
1327: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1328: return 'no_host';
1329: }
1330: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1331: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1332: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1333: }
1334: return $answer;
1335: }
1336:
1337: # --------- Try to authenticate user from domain's lib servers (first this one)
1338:
1339: sub authenticate {
1340: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1341: $upass=&escape($upass);
1342: $uname= &LONCAPA::clean_username($uname);
1343: my $uhome=&homeserver($uname,$udom,1);
1344: my $newhome;
1345: if ((!$uhome) || ($uhome eq 'no_host')) {
1346: # Maybe the machine was offline and only re-appeared again recently?
1347: &reconlonc();
1348: # One more
1349: $uhome=&homeserver($uname,$udom,1);
1350: if (($uhome eq 'no_host') && $checkdefauth) {
1351: if (defined(&domain($udom,'primary'))) {
1352: $newhome=&domain($udom,'primary');
1353: }
1354: if ($newhome ne '') {
1355: $uhome = $newhome;
1356: }
1357: }
1358: if ((!$uhome) || ($uhome eq 'no_host')) {
1359: &logthis("User $uname at $udom is unknown in authenticate");
1360: return 'no_host';
1361: }
1362: }
1363: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1364: if ($answer eq 'authorized') {
1365: if ($newhome) {
1366: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1367: return 'no_account_on_host';
1368: } else {
1369: &logthis("User $uname at $udom authorized by $uhome");
1370: return $uhome;
1371: }
1372: }
1373: if ($answer eq 'non_authorized') {
1374: &logthis("User $uname at $udom rejected by $uhome");
1375: return 'no_host';
1376: }
1377: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1378: return 'no_host';
1379: }
1380:
1381: sub can_host_session {
1382: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1383: my $canhost = 1;
1384: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1385: if (ref($remotesessions) eq 'HASH') {
1386: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1387: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1388: $canhost = 0;
1389: } else {
1390: $canhost = 1;
1391: }
1392: }
1393: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1394: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1395: $canhost = 1;
1396: } else {
1397: $canhost = 0;
1398: }
1399: }
1400: if ($canhost) {
1401: if ($remotesessions->{'version'} ne '') {
1402: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1403: if ($reqmajor ne '' && $reqminor ne '') {
1404: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1405: my $major = $1;
1406: my $minor = $2;
1407: if (($major < $reqmajor ) ||
1408: (($major == $reqmajor) && ($minor < $reqminor))) {
1409: $canhost = 0;
1410: }
1411: } else {
1412: $canhost = 0;
1413: }
1414: }
1415: }
1416: }
1417: }
1418: if ($canhost) {
1419: if (ref($hostedsessions) eq 'HASH') {
1420: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1421: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1422: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1423: if (($uint_dom ne '') &&
1424: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1425: $canhost = 0;
1426: } else {
1427: $canhost = 1;
1428: }
1429: }
1430: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1431: if (($uint_dom ne '') &&
1432: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1433: $canhost = 1;
1434: } else {
1435: $canhost = 0;
1436: }
1437: }
1438: }
1439: }
1440: return $canhost;
1441: }
1442:
1443: sub spare_can_host {
1444: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1445: my $canhost=1;
1446: my $try_server_hostname = &hostname($try_server);
1447: my $serverhomeID = &get_server_homeID($try_server_hostname);
1448: my $serverhomedom = &host_domain($serverhomeID);
1449: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1450: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1451: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1452: $canhost = 0;
1453: }
1454: }
1455: if ($canhost) {
1456: if (ref($defdomdefaults{'offloadoth'}) eq 'HASH') {
1457: if ($defdomdefaults{'offloadoth'}{$try_server}) {
1458: unless (&shared_institution($udom,$try_server)) {
1459: $canhost = 0;
1460: }
1461: }
1462: }
1463: }
1464: if (($canhost) && ($uint_dom)) {
1465: my @intdoms;
1466: my $internet_names = &get_internet_names($try_server);
1467: if (ref($internet_names) eq 'ARRAY') {
1468: @intdoms = @{$internet_names};
1469: }
1470: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1471: my $remoterev = &get_server_loncaparev(undef,$try_server);
1472: $canhost = &can_host_session($udom,$try_server,$remoterev,
1473: $remotesessions,
1474: $defdomdefaults{'hostedsessions'});
1475: }
1476: }
1477: return $canhost;
1478: }
1479:
1480: sub this_host_spares {
1481: my ($dom) = @_;
1482: my ($dom_in_use,$lonhost_in_use,$result);
1483: my @hosts = ¤t_machine_ids();
1484: foreach my $lonhost (@hosts) {
1485: if (&host_domain($lonhost) eq $dom) {
1486: $dom_in_use = $dom;
1487: $lonhost_in_use = $lonhost;
1488: last;
1489: }
1490: }
1491: if ($dom_in_use ne '') {
1492: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1493: }
1494: if (ref($result) ne 'HASH') {
1495: $lonhost_in_use = $perlvar{'lonHostID'};
1496: $dom_in_use = &host_domain($lonhost_in_use);
1497: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1498: if (ref($result) ne 'HASH') {
1499: $result = \%spareid;
1500: }
1501: }
1502: return $result;
1503: }
1504:
1505: sub spares_for_offload {
1506: my ($dom_in_use,$lonhost_in_use) = @_;
1507: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1508: if (defined($cached)) {
1509: return $result;
1510: } else {
1511: my $cachetime = 60*60*24;
1512: my %domconfig =
1513: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1514: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1515: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1516: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1517: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1518: }
1519: }
1520: }
1521: }
1522: return;
1523: }
1524:
1525: sub get_lonbalancer_config {
1526: my ($servers) = @_;
1527: my ($currbalancer,$currtargets);
1528: if (ref($servers) eq 'HASH') {
1529: foreach my $server (keys(%{$servers})) {
1530: my %what = (
1531: spareid => 1,
1532: perlvar => 1,
1533: );
1534: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1535: if ($result eq 'ok') {
1536: if (ref($returnhash) eq 'HASH') {
1537: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1538: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1539: $currbalancer = $server;
1540: $currtargets = {};
1541: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1542: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1543: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1544: }
1545: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1546: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1547: }
1548: }
1549: last;
1550: }
1551: }
1552: }
1553: }
1554: }
1555: }
1556: return ($currbalancer,$currtargets);
1557: }
1558:
1559: sub check_loadbalancing {
1560: my ($uname,$udom,$caller) = @_;
1561: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1562: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1563: my $lonhost = $perlvar{'lonHostID'};
1564: my @hosts = ¤t_machine_ids();
1565: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1566: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1567: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1568: my $serverhomedom = &host_domain($lonhost);
1569: my $domneedscache;
1570: my $cachetime = 60*60*24;
1571:
1572: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1573: $dom_in_use = $udom;
1574: $homeintdom = 1;
1575: } else {
1576: $dom_in_use = $serverhomedom;
1577: }
1578: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1579: unless (defined($cached)) {
1580: my %domconfig =
1581: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1582: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1583: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1584: } else {
1585: $domneedscache = $dom_in_use;
1586: }
1587: }
1588: if (ref($result) eq 'HASH') {
1589: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1590: &check_balancer_result($result,@hosts);
1591: if ($is_balancer) {
1592: if (ref($currrules) eq 'HASH') {
1593: if ($homeintdom) {
1594: if ($uname ne '') {
1595: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1596: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1597: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1598: $rule_in_effect = $currrules->{'_LC_author'};
1599: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1600: $rule_in_effect = $currrules->{'_LC_adv'}
1601: }
1602: }
1603: if ($rule_in_effect eq '') {
1604: my %userenv = &userenvironment($udom,$uname,'inststatus');
1605: if ($userenv{'inststatus'} ne '') {
1606: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1607: my ($othertitle,$usertypes,$types) =
1608: &Apache::loncommon::sorted_inst_types($udom);
1609: if (ref($types) eq 'ARRAY') {
1610: foreach my $type (@{$types}) {
1611: if (grep(/^\Q$type\E$/,@statuses)) {
1612: if (exists($currrules->{$type})) {
1613: $rule_in_effect = $currrules->{$type};
1614: }
1615: }
1616: }
1617: }
1618: } else {
1619: if (exists($currrules->{'default'})) {
1620: $rule_in_effect = $currrules->{'default'};
1621: }
1622: }
1623: }
1624: } else {
1625: if (exists($currrules->{'default'})) {
1626: $rule_in_effect = $currrules->{'default'};
1627: }
1628: }
1629: } else {
1630: if ($currrules->{'_LC_external'} ne '') {
1631: $rule_in_effect = $currrules->{'_LC_external'};
1632: }
1633: }
1634: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1635: $uname,$udom);
1636: }
1637: }
1638: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1639: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1640: unless (defined($cached)) {
1641: my %domconfig =
1642: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1643: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1644: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1645: } else {
1646: $domneedscache = $serverhomedom;
1647: }
1648: }
1649: if (ref($result) eq 'HASH') {
1650: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1651: &check_balancer_result($result,@hosts);
1652: if ($is_balancer) {
1653: if (ref($currrules) eq 'HASH') {
1654: if ($currrules->{'_LC_internetdom'} ne '') {
1655: $rule_in_effect = $currrules->{'_LC_internetdom'};
1656: }
1657: }
1658: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1659: $uname,$udom);
1660: }
1661: } else {
1662: if ($perlvar{'lonBalancer'} eq 'yes') {
1663: $is_balancer = 1;
1664: $offloadto = &this_host_spares($dom_in_use);
1665: }
1666: unless (defined($cached)) {
1667: $domneedscache = $serverhomedom;
1668: }
1669: }
1670: } else {
1671: if ($perlvar{'lonBalancer'} eq 'yes') {
1672: $is_balancer = 1;
1673: $offloadto = &this_host_spares($dom_in_use);
1674: }
1675: unless (defined($cached)) {
1676: $domneedscache = $serverhomedom;
1677: }
1678: }
1679: if ($domneedscache) {
1680: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1681: }
1682: if (($is_balancer) && ($caller ne 'switchserver')) {
1683: my $lowest_load = 30000;
1684: if (ref($offloadto) eq 'HASH') {
1685: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1686: foreach my $try_server (@{$offloadto->{'primary'}}) {
1687: ($otherserver,$lowest_load) =
1688: &compare_server_load($try_server,$otherserver,$lowest_load);
1689: }
1690: }
1691: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1692:
1693: if (!$found_server) {
1694: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1695: foreach my $try_server (@{$offloadto->{'default'}}) {
1696: ($otherserver,$lowest_load) =
1697: &compare_server_load($try_server,$otherserver,$lowest_load);
1698: }
1699: }
1700: }
1701: } elsif (ref($offloadto) eq 'ARRAY') {
1702: if (@{$offloadto} == 1) {
1703: $otherserver = $offloadto->[0];
1704: } elsif (@{$offloadto} > 1) {
1705: foreach my $try_server (@{$offloadto}) {
1706: ($otherserver,$lowest_load) =
1707: &compare_server_load($try_server,$otherserver,$lowest_load);
1708: }
1709: }
1710: }
1711: unless ($caller eq 'login') {
1712: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1713: $is_balancer = 0;
1714: if ($uname ne '' && $udom ne '') {
1715: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1716: &appenv({'user.loadbalexempt' => $lonhost,
1717: 'user.loadbalcheck.time' => time});
1718: }
1719: }
1720: }
1721: }
1722: }
1723: if (($is_balancer) && (!$homeintdom)) {
1724: undef($setcookie);
1725: }
1726: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1727: }
1728:
1729: sub check_balancer_result {
1730: my ($result,@hosts) = @_;
1731: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1732: if (ref($result) eq 'HASH') {
1733: if ($result->{'lonhost'} ne '') {
1734: my $currbalancer = $result->{'lonhost'};
1735: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1736: $is_balancer = 1;
1737: $currtargets = $result->{'targets'};
1738: $currrules = $result->{'rules'};
1739: }
1740: $dom_balancers = $currbalancer;
1741: } else {
1742: if (keys(%{$result})) {
1743: foreach my $key (keys(%{$result})) {
1744: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1745: (ref($result->{$key}) eq 'HASH')) {
1746: $is_balancer = 1;
1747: $currrules = $result->{$key}{'rules'};
1748: $currtargets = $result->{$key}{'targets'};
1749: $setcookie = $result->{$key}{'cookie'};
1750: last;
1751: }
1752: }
1753: $dom_balancers = join(',',sort(keys(%{$result})));
1754: }
1755: }
1756: }
1757: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1758: }
1759:
1760: sub get_loadbalancer_targets {
1761: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1762: my $offloadto;
1763: if ($rule_in_effect eq 'none') {
1764: return [$perlvar{'lonHostID'}];
1765: } elsif ($rule_in_effect eq '') {
1766: $offloadto = $currtargets;
1767: } else {
1768: if ($rule_in_effect eq 'homeserver') {
1769: my $homeserver = &homeserver($uname,$udom);
1770: if ($homeserver ne 'no_host') {
1771: $offloadto = [$homeserver];
1772: }
1773: } elsif ($rule_in_effect eq 'externalbalancer') {
1774: my %domconfig =
1775: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1776: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1777: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1778: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1779: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1780: }
1781: }
1782: } else {
1783: my %servers = &internet_dom_servers($udom);
1784: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1785: if (&hostname($remotebalancer) ne '') {
1786: $offloadto = [$remotebalancer];
1787: }
1788: }
1789: } elsif (&hostname($rule_in_effect) ne '') {
1790: $offloadto = [$rule_in_effect];
1791: }
1792: }
1793: return $offloadto;
1794: }
1795:
1796: sub internet_dom_servers {
1797: my ($dom) = @_;
1798: my (%uniqservers,%servers);
1799: my $primaryserver = &hostname(&domain($dom,'primary'));
1800: my @machinedoms = &machine_domains($primaryserver);
1801: foreach my $mdom (@machinedoms) {
1802: my %currservers = %servers;
1803: my %server = &get_servers($mdom);
1804: %servers = (%currservers,%server);
1805: }
1806: my %by_hostname;
1807: foreach my $id (keys(%servers)) {
1808: push(@{$by_hostname{$servers{$id}}},$id);
1809: }
1810: foreach my $hostname (sort(keys(%by_hostname))) {
1811: if (@{$by_hostname{$hostname}} > 1) {
1812: my $match = 0;
1813: foreach my $id (@{$by_hostname{$hostname}}) {
1814: if (&host_domain($id) eq $dom) {
1815: $uniqservers{$id} = $hostname;
1816: $match = 1;
1817: }
1818: }
1819: unless ($match) {
1820: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1821: }
1822: } else {
1823: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1824: }
1825: }
1826: return %uniqservers;
1827: }
1828:
1829: sub trusted_domains {
1830: my ($cmdtype,$calldom) = @_;
1831: my ($trusted,$untrusted);
1832: if (&domain($calldom) eq '') {
1833: return ($trusted,$untrusted);
1834: }
1835: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|othcoau|domroles|catalog|reqcrs|msg)$/) {
1836: return ($trusted,$untrusted);
1837: }
1838: my $callprimary = &domain($calldom,'primary');
1839: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1840: if ($intcalldom eq '') {
1841: return ($trusted,$untrusted);
1842: }
1843:
1844: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1845: unless (defined($cached)) {
1846: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1847: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1848: $trustconfig = $domconfig{'trust'};
1849: }
1850: if (ref($trustconfig)) {
1851: my (%possexc,%possinc,@allexc,@allinc);
1852: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1853: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1854: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1855: }
1856: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1857: $possinc{$intcalldom} = 1;
1858: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1859: }
1860: }
1861: if (keys(%possexc)) {
1862: if (keys(%possinc)) {
1863: foreach my $key (sort(keys(%possexc))) {
1864: next if ($key eq $intcalldom);
1865: unless ($possinc{$key}) {
1866: push(@allexc,$key);
1867: }
1868: }
1869: } else {
1870: @allexc = sort(keys(%possexc));
1871: }
1872: }
1873: if (keys(%possinc)) {
1874: $possinc{$intcalldom} = 1;
1875: @allinc = sort(keys(%possinc));
1876: }
1877: if ((@allexc > 0) || (@allinc > 0)) {
1878: my %doms_by_intdom;
1879: my %allintdoms = &all_host_intdom();
1880: my %alldoms = &all_host_domain();
1881: foreach my $key (%allintdoms) {
1882: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1883: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1884: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1885: }
1886: } else {
1887: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1888: }
1889: }
1890: foreach my $exc (@allexc) {
1891: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1892: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1893: }
1894: }
1895: foreach my $inc (@allinc) {
1896: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1897: push(@{$trusted},@{$doms_by_intdom{$inc}});
1898: }
1899: }
1900: }
1901: }
1902: return ($trusted,$untrusted);
1903: }
1904:
1905: sub will_trust {
1906: my ($cmdtype,$domain,$possdom) = @_;
1907: return 1 if ($domain eq $possdom);
1908: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1909: my $willtrust;
1910: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1911: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1912: $willtrust = 1;
1913: }
1914: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1915: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1916: $willtrust = 1;
1917: }
1918: } else {
1919: $willtrust = 1;
1920: }
1921: return $willtrust;
1922: }
1923:
1924: # ---------------------- Find the homebase for a user from domain's lib servers
1925:
1926: my %homecache;
1927: sub homeserver {
1928: my ($uname,$udom,$ignoreBadCache)=@_;
1929: my $index="$uname:$udom";
1930:
1931: if (exists($homecache{$index})) { return $homecache{$index}; }
1932:
1933: my %servers = &get_servers($udom,'library');
1934: foreach my $tryserver (keys(%servers)) {
1935: next if ($ignoreBadCache ne 'true' &&
1936: exists($badServerCache{$tryserver}));
1937:
1938: my $answer=reply("home:$udom:$uname",$tryserver);
1939: if ($answer eq 'found') {
1940: delete($badServerCache{$tryserver});
1941: return $homecache{$index}=$tryserver;
1942: } elsif ($answer eq 'no_host') {
1943: $badServerCache{$tryserver}=1;
1944: }
1945: }
1946: return 'no_host';
1947: }
1948:
1949: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1950:
1951: sub idget {
1952: my ($udom,$idsref,$namespace)=@_;
1953: my %returnhash=();
1954: my @ids=();
1955: if (ref($idsref) eq 'ARRAY') {
1956: @ids = @{$idsref};
1957: } else {
1958: return %returnhash;
1959: }
1960: if ($namespace eq '') {
1961: $namespace = 'ids';
1962: }
1963:
1964: my %servers = &get_servers($udom,'library');
1965: foreach my $tryserver (keys(%servers)) {
1966: my $idlist=join('&', map { &escape($_); } @ids);
1967: if ($namespace eq 'ids') {
1968: $idlist=~tr/A-Z/a-z/;
1969: }
1970: my $reply;
1971: if ($namespace eq 'ids') {
1972: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1973: } else {
1974: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1975: }
1976: my @answer=();
1977: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1978: @answer=split(/\&/,$reply);
1979: } ;
1980: my $i;
1981: for ($i=0;$i<=$#ids;$i++) {
1982: if ($answer[$i]) {
1983: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1984: }
1985: }
1986: }
1987: return %returnhash;
1988: }
1989:
1990: # ------------------------------------- Find the IDs behind a list of usernames
1991:
1992: sub idrget {
1993: my ($udom,@unames)=@_;
1994: my %returnhash=();
1995: foreach my $uname (@unames) {
1996: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1997: }
1998: return %returnhash;
1999: }
2000:
2001: # Store away a list of names and associated student/employee IDs or clicker IDs
2002:
2003: sub idput {
2004: my ($udom,$idsref,$uhom,$namespace)=@_;
2005: my %servers=();
2006: my %ids=();
2007: my %byid = ();
2008: if (ref($idsref) eq 'HASH') {
2009: %ids=%{$idsref};
2010: }
2011: if ($namespace eq '') {
2012: $namespace = 'ids';
2013: }
2014: foreach my $uname (keys(%ids)) {
2015: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
2016: if ($uhom eq '') {
2017: $uhom=&homeserver($uname,$udom);
2018: }
2019: if ($uhom ne 'no_host') {
2020: my $esc_unam=&escape($uname);
2021: if ($namespace eq 'ids') {
2022: my $id=&escape($ids{$uname});
2023: $id=~tr/A-Z/a-z/;
2024: my $esc_unam=&escape($uname);
2025: $servers{$uhom}.=$id.'='.$esc_unam.'&';
2026: } else {
2027: my @currids = split(/,/,$ids{$uname});
2028: foreach my $id (@currids) {
2029: $byid{$uhom}{$id} .= $uname.',';
2030: }
2031: }
2032: }
2033: }
2034: if ($namespace eq 'clickers') {
2035: foreach my $server (keys(%byid)) {
2036: if (ref($byid{$server}) eq 'HASH') {
2037: foreach my $id (keys(%{$byid{$server}})) {
2038: $byid{$server} =~ s/,$//;
2039: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
2040: }
2041: }
2042: }
2043: }
2044: foreach my $server (keys(%servers)) {
2045: $servers{$server} =~ s/\&$//;
2046: if ($namespace eq 'ids') {
2047: &critical('idput:'.$udom.':'.$servers{$server},$server);
2048: } else {
2049: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
2050: }
2051: }
2052: }
2053:
2054: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
2055:
2056: sub iddel {
2057: my ($udom,$idshashref,$uhome,$namespace)=@_;
2058: my %result=();
2059: my %ids=();
2060: my %byid = ();
2061: if (ref($idshashref) eq 'HASH') {
2062: %ids=%{$idshashref};
2063: } else {
2064: return %result;
2065: }
2066: if ($namespace eq '') {
2067: $namespace = 'ids';
2068: }
2069: my %servers=();
2070: while (my ($id,$unamestr) = each(%ids)) {
2071: if ($namespace eq 'ids') {
2072: my $uhom = $uhome;
2073: if ($uhom eq '') {
2074: $uhom=&homeserver($unamestr,$udom);
2075: }
2076: if ($uhom ne 'no_host') {
2077: $servers{$uhom}.='&'.&escape($id);
2078: }
2079: } else {
2080: my @curritems = split(/,/,$ids{$id});
2081: foreach my $uname (@curritems) {
2082: my $uhom = $uhome;
2083: if ($uhom eq '') {
2084: $uhom=&homeserver($uname,$udom);
2085: }
2086: if ($uhom ne 'no_host') {
2087: $byid{$uhom}{$id} .= $uname.',';
2088: }
2089: }
2090: }
2091: }
2092: if ($namespace eq 'clickers') {
2093: foreach my $server (keys(%byid)) {
2094: if (ref($byid{$server}) eq 'HASH') {
2095: foreach my $id (keys(%{$byid{$server}})) {
2096: $byid{$server}{$id} =~ s/,$//;
2097: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2098: }
2099: }
2100: }
2101: }
2102: foreach my $server (keys(%servers)) {
2103: $servers{$server} =~ s/\&$//;
2104: if ($namespace eq 'ids') {
2105: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2106: } elsif ($namespace eq 'clickers') {
2107: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2108: }
2109: }
2110: return %result;
2111: }
2112:
2113: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2114:
2115: sub updateclickers {
2116: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2117: my %clickers;
2118: if (ref($idshashref) eq 'HASH') {
2119: %clickers=%{$idshashref};
2120: } else {
2121: return;
2122: }
2123: my $items='';
2124: foreach my $item (keys(%clickers)) {
2125: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2126: }
2127: $items=~s/\&$//;
2128: my $request = "updateclickers:$udom:$action:$items";
2129: if ($critical) {
2130: return &critical($request,$uhome);
2131: } else {
2132: return &reply($request,$uhome);
2133: }
2134: }
2135:
2136: # ------------------------------dump from db file owned by domainconfig user
2137: sub dump_dom {
2138: my ($namespace, $udom, $regexp) = @_;
2139:
2140: $udom ||= $env{'user.domain'};
2141:
2142: return () unless $udom;
2143:
2144: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2145: }
2146:
2147: # ------------------------------------------ get items from domain db files
2148:
2149: sub get_dom {
2150: my ($namespace,$storearr,$udom,$uhome,$encrypt)=@_;
2151: return if ($udom eq 'public');
2152: my $items='';
2153: foreach my $item (@$storearr) {
2154: $items.=&escape($item).'&';
2155: }
2156: $items=~s/\&$//;
2157: if (!$udom) {
2158: $udom=$env{'user.domain'};
2159: return if ($udom eq 'public');
2160: if (defined(&domain($udom,'primary'))) {
2161: $uhome=&domain($udom,'primary');
2162: } else {
2163: undef($uhome);
2164: }
2165: } else {
2166: if (!$uhome) {
2167: if (defined(&domain($udom,'primary'))) {
2168: $uhome=&domain($udom,'primary');
2169: }
2170: }
2171: }
2172: if ($udom && $uhome && ($uhome ne 'no_host')) {
2173: my $rep;
2174: if (grep { $_ eq $uhome } ¤t_machine_ids()) {
2175: # domain information is hosted on this machine
2176: $rep = &LONCAPA::Lond::get_dom("getdom:$udom:$namespace:$items");
2177: } else {
2178: if ($encrypt) {
2179: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2180: } else {
2181: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2182: }
2183: }
2184: my %returnhash;
2185: if ($rep eq '' || $rep =~ /^error: 2 /) {
2186: return %returnhash;
2187: }
2188: my @pairs=split(/\&/,$rep);
2189: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2190: return @pairs;
2191: }
2192: my $i=0;
2193: foreach my $item (@$storearr) {
2194: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2195: $i++;
2196: }
2197: return %returnhash;
2198: } else {
2199: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2200: }
2201: }
2202:
2203: # -------------------------------------------- put items in domain db files
2204:
2205: sub put_dom {
2206: my ($namespace,$storehash,$udom,$uhome,$encrypt)=@_;
2207: if (!$udom) {
2208: $udom=$env{'user.domain'};
2209: if (defined(&domain($udom,'primary'))) {
2210: $uhome=&domain($udom,'primary');
2211: } else {
2212: undef($uhome);
2213: }
2214: } else {
2215: if (!$uhome) {
2216: if (defined(&domain($udom,'primary'))) {
2217: $uhome=&domain($udom,'primary');
2218: }
2219: }
2220: }
2221: if ($udom && $uhome && ($uhome ne 'no_host')) {
2222: my $items='';
2223: foreach my $item (keys(%$storehash)) {
2224: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2225: }
2226: $items=~s/\&$//;
2227: if ($encrypt) {
2228: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2229: } else {
2230: return &reply("putdom:$udom:$namespace:$items",$uhome);
2231: }
2232: } else {
2233: &logthis("put_dom failed - no homeserver and/or domain");
2234: }
2235: }
2236:
2237: # --------------------- newput for items in db file owned by domainconfig user
2238: sub newput_dom {
2239: my ($namespace,$storehash,$udom) = @_;
2240: my $result;
2241: if (!$udom) {
2242: $udom=$env{'user.domain'};
2243: }
2244: if ($udom) {
2245: my $uname = &get_domainconfiguser($udom);
2246: $result = &newput($namespace,$storehash,$udom,$uname);
2247: }
2248: return $result;
2249: }
2250:
2251: # --------------------- delete for items in db file owned by domainconfig user
2252: sub del_dom {
2253: my ($namespace,$storearr,$udom)=@_;
2254: if (ref($storearr) eq 'ARRAY') {
2255: if (!$udom) {
2256: $udom=$env{'user.domain'};
2257: }
2258: if ($udom) {
2259: my $uname = &get_domainconfiguser($udom);
2260: return &del($namespace,$storearr,$udom,$uname);
2261: }
2262: }
2263: }
2264:
2265: sub store_dom {
2266: my ($storehash,$id,$namespace,$dom,$home,$encrypt) = @_;
2267: $$storehash{'ip'}=&get_requestor_ip();
2268: $$storehash{'host'}=$perlvar{'lonHostID'};
2269: my $namevalue='';
2270: foreach my $key (keys(%{$storehash})) {
2271: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
2272: }
2273: $namevalue=~s/\&$//;
2274: if (grep { $_ eq $home } current_machine_ids()) {
2275: return LONCAPA::Lond::store_dom("storedom:$dom:$namespace:$id:$namevalue");
2276: } else {
2277: if ($namespace eq 'private') {
2278: return 'refused';
2279: } elsif ($encrypt) {
2280: return reply("encrypt:storedom:$dom:$namespace:$id:$namevalue",$home);
2281: } else {
2282: return reply("storedom:$dom:$namespace:$id:$namevalue",$home);
2283: }
2284: }
2285: }
2286:
2287: sub restore_dom {
2288: my ($id,$namespace,$dom,$home,$encrypt) = @_;
2289: my $answer;
2290: if (grep { $_ eq $home } current_machine_ids()) {
2291: $answer = LONCAPA::Lond::restore_dom("restoredom:$dom:$namespace:$id");
2292: } elsif ($namespace ne 'private') {
2293: if ($encrypt) {
2294: $answer=&reply("encrypt:restoredom:$dom:$namespace:$id",$home);
2295: } else {
2296: $answer=&reply("restoredom:$dom:$namespace:$id",$home);
2297: }
2298: }
2299: my %returnhash=();
2300: unless (($answer eq '') || ($answer eq 'con_lost') || ($answer eq 'refused') ||
2301: ($answer eq 'unknown_cmd') || ($answer eq 'rejected')) {
2302: foreach my $line (split(/\&/,$answer)) {
2303: my ($name,$value)=split(/\=/,$line);
2304: $returnhash{&unescape($name)}=&thaw_unescape($value);
2305: }
2306: my $version;
2307: for ($version=1;$version<=$returnhash{'version'};$version++) {
2308: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
2309: $returnhash{$item}=$returnhash{$version.':'.$item};
2310: }
2311: }
2312: }
2313: return %returnhash;
2314: }
2315:
2316: # ----------------------------------construct domainconfig user for a domain
2317: sub get_domainconfiguser {
2318: my ($udom) = @_;
2319: return $udom.'-domainconfig';
2320: }
2321:
2322: sub retrieve_inst_usertypes {
2323: my ($udom) = @_;
2324: my (%returnhash,@order);
2325: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2326: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2327: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2328: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2329: } else {
2330: if (defined(&domain($udom,'primary'))) {
2331: my $uhome=&domain($udom,'primary');
2332: my $rep=&reply("inst_usertypes:$udom",$uhome);
2333: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2334: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2335: return (\%returnhash,\@order);
2336: }
2337: my ($hashitems,$orderitems) = split(/:/,$rep);
2338: my @pairs=split(/\&/,$hashitems);
2339: foreach my $item (@pairs) {
2340: my ($key,$value)=split(/=/,$item,2);
2341: $key = &unescape($key);
2342: next if ($key =~ /^error: 2 /);
2343: $returnhash{$key}=&thaw_unescape($value);
2344: }
2345: my @esc_order = split(/\&/,$orderitems);
2346: foreach my $item (@esc_order) {
2347: push(@order,&unescape($item));
2348: }
2349: } else {
2350: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2351: }
2352: return (\%returnhash,\@order);
2353: }
2354: }
2355:
2356: sub is_domainimage {
2357: my ($url) = @_;
2358: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo|login)/+[^/]-) {
2359: if (&domain($1) ne '') {
2360: return '1';
2361: }
2362: }
2363: return;
2364: }
2365:
2366: sub inst_directory_query {
2367: my ($srch) = @_;
2368: my $udom = $srch->{'srchdomain'};
2369: my %results;
2370: my $homeserver = &domain($udom,'primary');
2371: my $outcome;
2372: if ($homeserver ne '') {
2373: unless ($homeserver eq $perlvar{'lonHostID'}) {
2374: if ($srch->{'srchby'} eq 'email') {
2375: my $lcrev = &get_server_loncaparev($udom,$homeserver);
2376: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2377: if (($major eq '' && $minor eq '') || ($major < 2) ||
2378: (($major == 2) && ($minor < 12))) {
2379: return;
2380: }
2381: }
2382: }
2383: my $queryid=&reply("querysend:instdirsearch:".
2384: &escape($srch->{'srchby'}).':'.
2385: &escape($srch->{'srchterm'}).':'.
2386: &escape($srch->{'srchtype'}),$homeserver);
2387: my $host=&hostname($homeserver);
2388: if ($queryid !~/^\Q$host\E\_/) {
2389: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2390: return;
2391: }
2392: my $response = &get_query_reply($queryid);
2393: my $maxtries = 5;
2394: my $tries = 1;
2395: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2396: $response = &get_query_reply($queryid);
2397: $tries ++;
2398: }
2399:
2400: if (!&error($response) && $response ne 'refused') {
2401: if ($response eq 'unavailable') {
2402: $outcome = $response;
2403: } else {
2404: $outcome = 'ok';
2405: my @matches = split(/\n/,$response);
2406: foreach my $match (@matches) {
2407: my ($key,$value) = split(/=/,$match);
2408: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2409: }
2410: }
2411: }
2412: }
2413: return ($outcome,%results);
2414: }
2415:
2416: sub usersearch {
2417: my ($srch) = @_;
2418: my $dom = $srch->{'srchdomain'};
2419: my %results;
2420: my %libserv = &all_library();
2421: my $query = 'usersearch';
2422: foreach my $tryserver (keys(%libserv)) {
2423: if (&host_domain($tryserver) eq $dom) {
2424: unless ($tryserver eq $perlvar{'lonHostID'}) {
2425: if ($srch->{'srchby'} eq 'email') {
2426: my $lcrev = &get_server_loncaparev($dom,$tryserver);
2427: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2428: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2429: (($major == 2) && ($minor < 12)));
2430: }
2431: }
2432: my $host=&hostname($tryserver);
2433: my $queryid=
2434: &reply("querysend:".&escape($query).':'.
2435: &escape($srch->{'srchby'}).':'.
2436: &escape($srch->{'srchtype'}).':'.
2437: &escape($srch->{'srchterm'}),$tryserver);
2438: if ($queryid !~/^\Q$host\E\_/) {
2439: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2440: next;
2441: }
2442: my $reply = &get_query_reply($queryid);
2443: my $maxtries = 1;
2444: my $tries = 1;
2445: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2446: $reply = &get_query_reply($queryid);
2447: $tries ++;
2448: }
2449: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2450: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2451: } else {
2452: my @matches;
2453: if ($reply =~ /\n/) {
2454: @matches = split(/\n/,$reply);
2455: } else {
2456: @matches = split(/\&/,$reply);
2457: }
2458: foreach my $match (@matches) {
2459: my ($uname,$udom,%userhash);
2460: foreach my $entry (split(/:/,$match)) {
2461: my ($key,$value) =
2462: map {&unescape($_);} split(/=/,$entry);
2463: $userhash{$key} = $value;
2464: if ($key eq 'username') {
2465: $uname = $value;
2466: } elsif ($key eq 'domain') {
2467: $udom = $value;
2468: }
2469: }
2470: $results{$uname.':'.$udom} = \%userhash;
2471: }
2472: }
2473: }
2474: }
2475: return %results;
2476: }
2477:
2478: sub get_instuser {
2479: my ($udom,$uname,$id) = @_;
2480: my $homeserver = &domain($udom,'primary');
2481: my ($outcome,%results);
2482: if ($homeserver ne '') {
2483: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2484: &escape($id).':'.&escape($udom),$homeserver);
2485: my $host=&hostname($homeserver);
2486: if ($queryid !~/^\Q$host\E\_/) {
2487: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2488: return;
2489: }
2490: my $response = &get_query_reply($queryid);
2491: my $maxtries = 5;
2492: my $tries = 1;
2493: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2494: $response = &get_query_reply($queryid);
2495: $tries ++;
2496: }
2497: if (!&error($response) && $response ne 'refused') {
2498: if ($response eq 'unavailable') {
2499: $outcome = $response;
2500: } else {
2501: $outcome = 'ok';
2502: my @matches = split(/\n/,$response);
2503: foreach my $match (@matches) {
2504: my ($key,$value) = split(/=/,$match);
2505: $results{&unescape($key)} = &thaw_unescape($value);
2506: }
2507: }
2508: }
2509: }
2510: my %userinfo;
2511: if (ref($results{$uname}) eq 'HASH') {
2512: %userinfo = %{$results{$uname}};
2513: }
2514: return ($outcome,%userinfo);
2515: }
2516:
2517: sub get_multiple_instusers {
2518: my ($udom,$users,$caller) = @_;
2519: my ($outcome,$results);
2520: if (ref($users) eq 'HASH') {
2521: my $count = keys(%{$users});
2522: my $requested = &freeze_escape($users);
2523: my $homeserver = &domain($udom,'primary');
2524: if ($homeserver ne '') {
2525: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2526: my $host=&hostname($homeserver);
2527: if ($queryid !~/^\Q$host\E\_/) {
2528: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2529: ' for host: '.$homeserver.'in domain '.$udom);
2530: return ($outcome,$results);
2531: }
2532: my $response = &get_query_reply($queryid);
2533: my $maxtries = 5;
2534: if ($count > 100) {
2535: $maxtries = 1+int($count/20);
2536: }
2537: my $tries = 1;
2538: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2539: $response = &get_query_reply($queryid);
2540: $tries ++;
2541: }
2542: if ($response eq '') {
2543: $results = {};
2544: foreach my $key (keys(%{$users})) {
2545: my ($uname,$id);
2546: if ($caller eq 'id') {
2547: $id = $key;
2548: } else {
2549: $uname = $key;
2550: }
2551: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2552: $outcome = $resp;
2553: if ($resp eq 'ok') {
2554: %{$results} = (%{$results}, %info);
2555: } else {
2556: last;
2557: }
2558: }
2559: } elsif(!&error($response) && ($response ne 'refused')) {
2560: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2561: $outcome = $response;
2562: } else {
2563: ($outcome,my $userdata) = split(/=/,$response,2);
2564: if ($outcome eq 'ok') {
2565: $results = &thaw_unescape($userdata);
2566: }
2567: }
2568: }
2569: }
2570: }
2571: return ($outcome,$results);
2572: }
2573:
2574: sub inst_rulecheck {
2575: my ($udom,$uname,$id,$item,$rules) = @_;
2576: my %returnhash;
2577: if ($udom ne '') {
2578: if (ref($rules) eq 'ARRAY') {
2579: @{$rules} = map {&escape($_);} (@{$rules});
2580: my $rulestr = join(':',@{$rules});
2581: my $homeserver=&domain($udom,'primary');
2582: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2583: my $response;
2584: if ($item eq 'username') {
2585: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2586: ':'.&escape($uname).':'.$rulestr,
2587: $homeserver));
2588: } elsif ($item eq 'id') {
2589: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2590: ':'.&escape($id).':'.$rulestr,
2591: $homeserver));
2592: } elsif ($item eq 'selfcreate') {
2593: $response=&unescape(&reply('instselfcreatecheck:'.
2594: &escape($udom).':'.&escape($uname).
2595: ':'.$rulestr,$homeserver));
2596: } elsif ($item eq 'unamemap') {
2597: $response=&unescape(&reply('instunamemapcheck:'.
2598: &escape($udom).':'.&escape($uname).
2599: ':'.$rulestr,$homeserver));
2600: }
2601: if ($response ne 'refused') {
2602: my @pairs=split(/\&/,$response);
2603: foreach my $item (@pairs) {
2604: my ($key,$value)=split(/=/,$item,2);
2605: $key = &unescape($key);
2606: next if ($key =~ /^error: 2 /);
2607: $returnhash{$key}=&thaw_unescape($value);
2608: }
2609: }
2610: }
2611: }
2612: }
2613: return %returnhash;
2614: }
2615:
2616: sub inst_userrules {
2617: my ($udom,$check) = @_;
2618: my (%ruleshash,@ruleorder);
2619: if ($udom ne '') {
2620: my $homeserver=&domain($udom,'primary');
2621: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2622: my $response;
2623: if ($check eq 'id') {
2624: $response=&reply('instidrules:'.&escape($udom),
2625: $homeserver);
2626: } elsif ($check eq 'email') {
2627: $response=&reply('instemailrules:'.&escape($udom),
2628: $homeserver);
2629: } elsif ($check eq 'unamemap') {
2630: $response=&reply('unamemaprules:'.&escape($udom),
2631: $homeserver);
2632: } else {
2633: $response=&reply('instuserrules:'.&escape($udom),
2634: $homeserver);
2635: }
2636: if (($response ne 'refused') && ($response ne 'error') &&
2637: ($response ne 'unknown_cmd') &&
2638: ($response ne 'no_such_host')) {
2639: my ($hashitems,$orderitems) = split(/:/,$response);
2640: my @pairs=split(/\&/,$hashitems);
2641: foreach my $item (@pairs) {
2642: my ($key,$value)=split(/=/,$item,2);
2643: $key = &unescape($key);
2644: next if ($key =~ /^error: 2 /);
2645: $ruleshash{$key}=&thaw_unescape($value);
2646: }
2647: my @esc_order = split(/\&/,$orderitems);
2648: foreach my $item (@esc_order) {
2649: push(@ruleorder,&unescape($item));
2650: }
2651: }
2652: }
2653: }
2654: return (\%ruleshash,\@ruleorder);
2655: }
2656:
2657: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2658:
2659: sub get_domain_defaults {
2660: my ($domain,$ignore_cache) = @_;
2661: return if (($domain eq '') || ($domain eq 'public'));
2662: my $cachetime = 60*60*24;
2663: unless ($ignore_cache) {
2664: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2665: if (defined($cached)) {
2666: if (ref($result) eq 'HASH') {
2667: return %{$result};
2668: }
2669: }
2670: }
2671: my %domdefaults;
2672: my %domconfig =
2673: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2674: 'requestcourses','inststatus',
2675: 'coursedefaults','usersessions',
2676: 'requestauthor','selfenrollment',
2677: 'coursecategories','ssl','autoenroll',
2678: 'trust','helpsettings','wafproxy','ltisec'],$domain);
2679: my @coursetypes = ('official','unofficial','community','textbook','placement');
2680: if (ref($domconfig{'defaults'}) eq 'HASH') {
2681: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2682: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2683: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2684: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2685: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2686: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2687: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2688: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2689: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2690: $domdefaults{'unamemap_rule'} = $domconfig{'defaults'}{'unamemap_rule'};
2691: } else {
2692: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2693: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2694: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2695: }
2696: if (ref($domconfig{'quotas'}) eq 'HASH') {
2697: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2698: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2699: } else {
2700: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2701: }
2702: my @usertools = ('aboutme','blog','webdav','portfolio');
2703: foreach my $item (@usertools) {
2704: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2705: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2706: }
2707: }
2708: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2709: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2710: }
2711: }
2712: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2713: foreach my $item ('official','unofficial','community','textbook','placement') {
2714: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2715: }
2716: }
2717: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2718: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2719: }
2720: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2721: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2722: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2723: }
2724: }
2725: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2726: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2727: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2728: $domdefaults{'inline_chem'} = $domconfig{'coursedefaults'}{'inline_chem'};
2729: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2730: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2731: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2732: }
2733: foreach my $type (@coursetypes) {
2734: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2735: unless ($type eq 'community') {
2736: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2737: }
2738: }
2739: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2740: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2741: }
2742: if ($domdefaults{'postsubmit'} eq 'on') {
2743: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2744: $domdefaults{$type.'postsubtimeout'} =
2745: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2746: }
2747: }
2748: }
2749: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2750: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2751: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2752: if (@clonecodes) {
2753: $domdefaults{'canclone'} = join('+',@clonecodes);
2754: }
2755: }
2756: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2757: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2758: }
2759: if ($domconfig{'coursedefaults'}{'texengine'}) {
2760: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2761: }
2762: if (exists($domconfig{'coursedefaults'}{'ltiauth'})) {
2763: $domdefaults{'crsltiauth'} = $domconfig{'coursedefaults'}{'ltiauth'};
2764: }
2765: }
2766: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2767: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2768: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2769: }
2770: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2771: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2772: }
2773: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2774: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2775: }
2776: if (ref($domconfig{'usersessions'}{'offloadoth'}) eq 'HASH') {
2777: $domdefaults{'offloadoth'} = $domconfig{'usersessions'}{'offloadoth'};
2778: }
2779: }
2780: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2781: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2782: my @settings = ('types','registered','enroll_dates','access_dates','section',
2783: 'approval','limit');
2784: foreach my $type (@coursetypes) {
2785: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2786: my @mgrdc = ();
2787: foreach my $item (@settings) {
2788: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2789: push(@mgrdc,$item);
2790: }
2791: }
2792: if (@mgrdc) {
2793: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2794: }
2795: }
2796: }
2797: }
2798: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2799: foreach my $type (@coursetypes) {
2800: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2801: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2802: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2803: }
2804: }
2805: }
2806: }
2807: }
2808: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2809: $domdefaults{'catauth'} = 'std';
2810: $domdefaults{'catunauth'} = 'std';
2811: if ($domconfig{'coursecategories'}{'auth'}) {
2812: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2813: }
2814: if ($domconfig{'coursecategories'}{'unauth'}) {
2815: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2816: }
2817: }
2818: if (ref($domconfig{'ssl'}) eq 'HASH') {
2819: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2820: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2821: }
2822: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2823: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2824: }
2825: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2826: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2827: }
2828: }
2829: if (ref($domconfig{'trust'}) eq 'HASH') {
2830: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2831: foreach my $prefix (@prefixes) {
2832: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2833: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2834: }
2835: }
2836: }
2837: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2838: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2839: $domdefaults{'failsafe'} = $domconfig{'autoenroll'}{'failsafe'};
2840: }
2841: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2842: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2843: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2844: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2845: }
2846: }
2847: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
2848: foreach my $item ('ipheader','trusted','vpnint','vpnext','sslopt') {
2849: if ($domconfig{'wafproxy'}{$item}) {
2850: $domdefaults{'waf_'.$item} = $domconfig{'wafproxy'}{$item};
2851: }
2852: }
2853: }
2854: if (ref($domconfig{'ltisec'}) eq 'HASH') {
2855: if (ref($domconfig{'ltisec'}{'encrypt'}) eq 'HASH') {
2856: $domdefaults{'linkprotenc_crs'} = $domconfig{'ltisec'}{'encrypt'}{'crs'};
2857: $domdefaults{'linkprotenc_dom'} = $domconfig{'ltisec'}{'encrypt'}{'dom'};
2858: $domdefaults{'ltienc_consumers'} = $domconfig{'ltisec'}{'encrypt'}{'consumers'};
2859: }
2860: if (ref($domconfig{'ltisec'}{'private'}) eq 'HASH') {
2861: if (ref($domconfig{'ltisec'}{'private'}{'keys'}) eq 'ARRAY') {
2862: $domdefaults{'privhosts'} = $domconfig{'ltisec'}{'private'}{'keys'};
2863: }
2864: }
2865: }
2866: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2867: return %domdefaults;
2868: }
2869:
2870: sub get_dom_cats {
2871: my ($dom) = @_;
2872: return unless (&domain($dom));
2873: my ($cats,$cached)=&is_cached_new('cats',$dom);
2874: unless (defined($cached)) {
2875: my %domconfig = &get_dom('configuration',['coursecategories'],$dom);
2876: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2877: if (ref($domconfig{'coursecategories'}{'cats'}) eq 'HASH') {
2878: %{$cats} = %{$domconfig{'coursecategories'}{'cats'}};
2879: } else {
2880: $cats = {};
2881: }
2882: } else {
2883: $cats = {};
2884: }
2885: &Apache::lonnet::do_cache_new('cats',$dom,$cats,3600);
2886: }
2887: return $cats;
2888: }
2889:
2890: sub get_dom_instcats {
2891: my ($dom) = @_;
2892: return unless (&domain($dom));
2893: my ($instcats,$cached)=&is_cached_new('instcats',$dom);
2894: unless (defined($cached)) {
2895: my (%coursecodes,%codes,@codetitles,%cat_titles,%cat_order);
2896: my $totcodes = &retrieve_instcodes(\%coursecodes,$dom);
2897: if ($totcodes > 0) {
2898: my $caller = 'global';
2899: if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
2900: \@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
2901: $instcats = {
2902: codes => \%codes,
2903: codetitles => \@codetitles,
2904: cat_titles => \%cat_titles,
2905: cat_order => \%cat_order,
2906: };
2907: &do_cache_new('instcats',$dom,$instcats,3600);
2908: }
2909: }
2910: }
2911: return $instcats;
2912: }
2913:
2914: sub retrieve_instcodes {
2915: my ($coursecodes,$dom) = @_;
2916: my $totcodes;
2917: my %courses = &courseiddump($dom,'.',1,'.','.','.',undef,undef,'Course');
2918: foreach my $course (keys(%courses)) {
2919: if (ref($courses{$course}) eq 'HASH') {
2920: if ($courses{$course}{'inst_code'} ne '') {
2921: $$coursecodes{$course} = $courses{$course}{'inst_code'};
2922: $totcodes ++;
2923: }
2924: }
2925: }
2926: return $totcodes;
2927: }
2928:
2929: sub course_portal_url {
2930: my ($cnum,$cdom,$r) = @_;
2931: my $chome = &homeserver($cnum,$cdom);
2932: my $hostname = &hostname($chome);
2933: my $protocol = $protocol{$chome};
2934: $protocol = 'http' if ($protocol ne 'https');
2935: my %domdefaults = &get_domain_defaults($cdom);
2936: my $firsturl;
2937: if ($domdefaults{'portal_def'}) {
2938: $firsturl = $domdefaults{'portal_def'};
2939: } else {
2940: my $alias = &Apache::lonnet::use_proxy_alias($r,$chome);
2941: $hostname = $alias if ($alias ne '');
2942: $firsturl = $protocol.'://'.$hostname;
2943: }
2944: return $firsturl;
2945: }
2946:
2947: # --------------------------------------------- Get domain config for passwords
2948:
2949: sub get_passwdconf {
2950: my ($dom) = @_;
2951: my (%passwdconf,$gotconf,$lookup);
2952: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
2953: if (defined($cached)) {
2954: if (ref($result) eq 'HASH') {
2955: %passwdconf = %{$result};
2956: $gotconf = 1;
2957: }
2958: }
2959: unless ($gotconf) {
2960: my %domconfig = &get_dom('configuration',['passwords'],$dom);
2961: if (ref($domconfig{'passwords'}) eq 'HASH') {
2962: %passwdconf = %{$domconfig{'passwords'}};
2963: }
2964: my $cachetime = 24*60*60;
2965: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
2966: }
2967: return %passwdconf;
2968: }
2969:
2970: # --------------------------------------------------- Assign a key to a student
2971:
2972: sub assign_access_key {
2973: #
2974: # a valid key looks like uname:udom#comments
2975: # comments are being appended
2976: #
2977: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2978: $kdom=
2979: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2980: $knum=
2981: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2982: $cdom=
2983: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2984: $cnum=
2985: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2986: $udom=$env{'user.name'} unless (defined($udom));
2987: $uname=$env{'user.domain'} unless (defined($uname));
2988: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2989: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2990: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2991: # assigned to this person
2992: # - this should not happen,
2993: # unless something went wrong
2994: # the first time around
2995: # ready to assign
2996: $logentry=$1.'; '.$logentry;
2997: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2998: $kdom,$knum) eq 'ok') {
2999: # key now belongs to user
3000: my $envkey='key.'.$cdom.'_'.$cnum;
3001: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
3002: &appenv({'environment.'.$envkey => $ckey});
3003: return 'ok';
3004: } else {
3005: return
3006: 'error: Count not permanently assign key, will need to be re-entered later.';
3007: }
3008: } else {
3009: return 'error: Could not assign key, try again later.';
3010: }
3011: } elsif (!$existing{$ckey}) {
3012: # the key does not exist
3013: return 'error: The key does not exist';
3014: } else {
3015: # the key is somebody else's
3016: return 'error: The key is already in use';
3017: }
3018: }
3019:
3020: # ------------------------------------------ put an additional comment on a key
3021:
3022: sub comment_access_key {
3023: #
3024: # a valid key looks like uname:udom#comments
3025: # comments are being appended
3026: #
3027: my ($ckey,$cdom,$cnum,$logentry)=@_;
3028: $cdom=
3029: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3030: $cnum=
3031: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3032: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
3033: if ($existing{$ckey}) {
3034: $existing{$ckey}.='; '.$logentry;
3035: # ready to assign
3036: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
3037: $cdom,$cnum) eq 'ok') {
3038: return 'ok';
3039: } else {
3040: return 'error: Count not store comment.';
3041: }
3042: } else {
3043: # the key does not exist
3044: return 'error: The key does not exist';
3045: }
3046: }
3047:
3048: # ------------------------------------------------------ Generate a set of keys
3049:
3050: sub generate_access_keys {
3051: my ($number,$cdom,$cnum,$logentry)=@_;
3052: $cdom=
3053: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3054: $cnum=
3055: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3056: unless (&allowed('mky',$cdom)) { return 0; }
3057: unless (($cdom) && ($cnum)) { return 0; }
3058: if ($number>10000) { return 0; }
3059: sleep(2); # make sure don't get same seed twice
3060: srand(time()^($$+($$<<15))); # from "Programming Perl"
3061: my $total=0;
3062: for (my $i=1;$i<=$number;$i++) {
3063: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
3064: sprintf("%lx",int(100000*rand)).'-'.
3065: sprintf("%lx",int(100000*rand));
3066: $newkey=~s/1/g/g; # folks mix up 1 and l
3067: $newkey=~s/0/h/g; # and also 0 and O
3068: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
3069: if ($existing{$newkey}) {
3070: $i--;
3071: } else {
3072: if (&put('accesskeys',
3073: { $newkey => '# generated '.localtime().
3074: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
3075: '; '.$logentry },
3076: $cdom,$cnum) eq 'ok') {
3077: $total++;
3078: }
3079: }
3080: }
3081: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
3082: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
3083: return $total;
3084: }
3085:
3086: # ------------------------------------------------------- Validate an accesskey
3087:
3088: sub validate_access_key {
3089: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
3090: $cdom=
3091: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3092: $cnum=
3093: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3094: $udom=$env{'user.domain'} unless (defined($udom));
3095: $uname=$env{'user.name'} unless (defined($uname));
3096: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
3097: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
3098: }
3099:
3100: # ------------------------------------- Find the section of student in a course
3101: sub devalidate_getsection_cache {
3102: my ($udom,$unam,$courseid)=@_;
3103: my $hashid="$udom:$unam:$courseid";
3104: &devalidate_cache_new('getsection',$hashid);
3105: }
3106:
3107: sub courseid_to_courseurl {
3108: my ($courseid) = @_;
3109: #already url style courseid
3110: return $courseid if ($courseid =~ m{^/});
3111:
3112: if (exists($env{'course.'.$courseid.'.num'})) {
3113: my $cnum = $env{'course.'.$courseid.'.num'};
3114: my $cdom = $env{'course.'.$courseid.'.domain'};
3115: return "/$cdom/$cnum";
3116: }
3117:
3118: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
3119: if (exists($courseinfo{'num'})) {
3120: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
3121: }
3122:
3123: return undef;
3124: }
3125:
3126: sub getsection {
3127: my ($udom,$unam,$courseid)=@_;
3128: my $cachetime=1800;
3129:
3130: my $hashid="$udom:$unam:$courseid";
3131: my ($result,$cached)=&is_cached_new('getsection',$hashid);
3132: if (defined($cached)) { return $result; }
3133:
3134: my %Pending;
3135: my %Expired;
3136: #
3137: # Each role can either have not started yet (pending), be active,
3138: # or have expired.
3139: #
3140: # If there is an active role, we are done.
3141: #
3142: # If there is more than one role which has not started yet,
3143: # choose the one which will start sooner
3144: # If there is one role which has not started yet, return it.
3145: #
3146: # If there is more than one expired role, choose the one which ended last.
3147: # If there is a role which has expired, return it.
3148: #
3149: $courseid = &courseid_to_courseurl($courseid);
3150: my %roleshash = &dump('roles',$udom,$unam,$courseid);
3151: foreach my $key (keys(%roleshash)) {
3152: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
3153: my $section=$1;
3154: if ($key eq $courseid.'_st') { $section=''; }
3155: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
3156: my $now=time;
3157: if (defined($end) && $end && ($now > $end)) {
3158: $Expired{$end}=$section;
3159: next;
3160: }
3161: if (defined($start) && $start && ($now < $start)) {
3162: $Pending{$start}=$section;
3163: next;
3164: }
3165: return &do_cache_new('getsection',$hashid,$section,$cachetime);
3166: }
3167: #
3168: # Presumedly there will be few matching roles from the above
3169: # loop and the sorting time will be negligible.
3170: if (scalar(keys(%Pending))) {
3171: my ($time) = sort {$a <=> $b} keys(%Pending);
3172: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
3173: }
3174: if (scalar(keys(%Expired))) {
3175: my @sorted = sort {$a <=> $b} keys(%Expired);
3176: my $time = pop(@sorted);
3177: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
3178: }
3179: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
3180: }
3181:
3182: sub save_cache {
3183: &purge_remembered();
3184: #&Apache::loncommon::validate_page();
3185: undef(%env);
3186: undef($env_loaded);
3187: }
3188:
3189: my $to_remember=-1;
3190: my %remembered;
3191: my %accessed;
3192: my $kicks=0;
3193: my $hits=0;
3194: sub make_key {
3195: my ($name,$id) = @_;
3196: if (length($id) > 65
3197: && length(&escape($id)) > 200) {
3198: $id=length($id).':'.&Digest::MD5::md5_hex($id);
3199: }
3200: return &escape($name.':'.$id);
3201: }
3202:
3203: sub devalidate_cache_new {
3204: my ($name,$id,$debug) = @_;
3205: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
3206: my $remembered_id=$name.':'.$id;
3207: $id=&make_key($name,$id);
3208: $memcache->delete($id);
3209: delete($remembered{$remembered_id});
3210: delete($accessed{$remembered_id});
3211: }
3212:
3213: sub is_cached_new {
3214: my ($name,$id,$debug) = @_;
3215: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
3216: if (exists($remembered{$remembered_id})) {
3217: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
3218: $accessed{$remembered_id}=[&gettimeofday()];
3219: $hits++;
3220: return ($remembered{$remembered_id},1);
3221: }
3222: $id=&make_key($name,$id);
3223: my $value = $memcache->get($id);
3224: if (!(defined($value))) {
3225: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3226: return (undef,undef);
3227: }
3228: if ($value eq '__undef__') {
3229: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3230: $value=undef;
3231: }
3232: &make_room($remembered_id,$value,$debug);
3233: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3234: return ($value,1);
3235: }
3236:
3237: sub do_cache_new {
3238: my ($name,$id,$value,$time,$debug) = @_;
3239: my $remembered_id=$name.':'.$id;
3240: $id=&make_key($name,$id);
3241: my $setvalue=$value;
3242: if (!defined($setvalue)) {
3243: $setvalue='__undef__';
3244: }
3245: if (!defined($time) ) {
3246: $time=600;
3247: }
3248: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3249: my $result = $memcache->set($id,$setvalue,$time);
3250: if (! $result) {
3251: &logthis("caching of id -> $id failed");
3252: $memcache->disconnect_all();
3253: }
3254: # need to make a copy of $value
3255: &make_room($remembered_id,$value,$debug);
3256: return $value;
3257: }
3258:
3259: sub make_room {
3260: my ($remembered_id,$value,$debug)=@_;
3261:
3262: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3263: : $value;
3264: if ($to_remember<0) { return; }
3265: $accessed{$remembered_id}=[&gettimeofday()];
3266: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3267: my $to_kick;
3268: my $max_time=0;
3269: foreach my $other (keys(%accessed)) {
3270: if (&tv_interval($accessed{$other}) > $max_time) {
3271: $to_kick=$other;
3272: $max_time=&tv_interval($accessed{$other});
3273: }
3274: }
3275: delete($remembered{$to_kick});
3276: delete($accessed{$to_kick});
3277: $kicks++;
3278: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3279: return;
3280: }
3281:
3282: sub purge_remembered {
3283: #&logthis("Tossing ".scalar(keys(%remembered)));
3284: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3285: undef(%remembered);
3286: undef(%accessed);
3287: }
3288: # ------------------------------------- Read an entry from a user's environment
3289:
3290: sub userenvironment {
3291: my ($udom,$unam,@what)=@_;
3292: my $items;
3293: foreach my $item (@what) {
3294: $items.=&escape($item).'&';
3295: }
3296: $items=~s/\&$//;
3297: my %returnhash=();
3298: my $uhome = &homeserver($unam,$udom);
3299: unless ($uhome eq 'no_host') {
3300: my @answer=split(/\&/,
3301: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3302: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3303: return %returnhash;
3304: }
3305: my $i;
3306: for ($i=0;$i<=$#what;$i++) {
3307: $returnhash{$what[$i]}=&unescape($answer[$i]);
3308: }
3309: }
3310: return %returnhash;
3311: }
3312:
3313: # ---------------------------------------------------------- Get a studentphoto
3314: sub studentphoto {
3315: my ($udom,$unam,$ext) = @_;
3316: my $home=&Apache::lonnet::homeserver($unam,$udom);
3317: if (defined($env{'request.course.id'})) {
3318: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3319: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3320: return(&retrievestudentphoto($udom,$unam,$ext));
3321: } else {
3322: my ($result,$perm_reqd)=
3323: &Apache::lonnet::auto_photo_permission($unam,$udom);
3324: if ($result eq 'ok') {
3325: if (!($perm_reqd eq 'yes')) {
3326: return(&retrievestudentphoto($udom,$unam,$ext));
3327: }
3328: }
3329: }
3330: }
3331: } else {
3332: my ($result,$perm_reqd) =
3333: &Apache::lonnet::auto_photo_permission($unam,$udom);
3334: if ($result eq 'ok') {
3335: if (!($perm_reqd eq 'yes')) {
3336: return(&retrievestudentphoto($udom,$unam,$ext));
3337: }
3338: }
3339: }
3340: return '/adm/lonKaputt/lonlogo_broken.gif';
3341: }
3342:
3343: sub retrievestudentphoto {
3344: my ($udom,$unam,$ext,$type) = @_;
3345: my $home=&Apache::lonnet::homeserver($unam,$udom);
3346: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3347: if ($ret eq 'ok') {
3348: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3349: if ($type eq 'thumbnail') {
3350: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3351: }
3352: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3353: return $tokenurl;
3354: } else {
3355: if ($type eq 'thumbnail') {
3356: return '/adm/lonKaputt/genericstudent_tn.gif';
3357: } else {
3358: return '/adm/lonKaputt/lonlogo_broken.gif';
3359: }
3360: }
3361: }
3362:
3363: # -------------------------------------------------------------------- New chat
3364:
3365: sub chatsend {
3366: my ($newentry,$anon,$group)=@_;
3367: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3368: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3369: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3370: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3371: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3372: &escape($newentry)).':'.$group,$chome);
3373: }
3374:
3375: # ------------------------------------------ Find current version of a resource
3376:
3377: sub getversion {
3378: my $fname=&clutter(shift);
3379: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3380: return ¤tversion(&filelocation('',$fname));
3381: }
3382:
3383: sub currentversion {
3384: my $fname=shift;
3385: my $author=$fname;
3386: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3387: my ($udom,$uname)=split(/\//,$author);
3388: my $home=&homeserver($uname,$udom);
3389: if ($home eq 'no_host') {
3390: return -1;
3391: }
3392: my $answer=&reply("currentversion:$fname",$home);
3393: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3394: return -1;
3395: }
3396: return $answer;
3397: }
3398:
3399: #
3400: # Return special version number of resource if set by override, empty otherwise
3401: #
3402: sub usedversion {
3403: my $fname=shift;
3404: unless ($fname) { $fname=$env{'request.uri'}; }
3405: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3406: if ($urlversion) { return $urlversion; }
3407: return '';
3408: }
3409:
3410: # ----------------------------- Subscribe to a resource, return URL if possible
3411:
3412: sub subscribe {
3413: my $fname=shift;
3414: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3415: $fname=~s/[\n\r]//g;
3416: my $author=$fname;
3417: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3418: my ($udom,$uname)=split(/\//,$author);
3419: my $home=homeserver($uname,$udom);
3420: if ($home eq 'no_host') {
3421: return 'not_found';
3422: }
3423: my $answer=reply("sub:$fname",$home);
3424: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3425: $answer.=' by '.$home;
3426: }
3427: return $answer;
3428: }
3429:
3430: # -------------------------------------------------------------- Replicate file
3431:
3432: sub repcopy {
3433: my $filename=shift;
3434: $filename=~s/\/+/\//g;
3435: my $londocroot = $perlvar{'lonDocRoot'};
3436: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3437: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3438: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3439: $filename=~m{^/*(uploaded|editupload)/}) {
3440: return &repcopy_userfile($filename);
3441: }
3442: $filename=~s/[\n\r]//g;
3443: my $transname="$filename.in.transfer";
3444: # FIXME: this should flock
3445: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3446: my $remoteurl=subscribe($filename);
3447: if ($remoteurl =~ /^con_lost by/) {
3448: &logthis("Subscribe returned $remoteurl: $filename");
3449: return 'unavailable';
3450: } elsif ($remoteurl eq 'not_found') {
3451: #&logthis("Subscribe returned not_found: $filename");
3452: return 'not_found';
3453: } elsif ($remoteurl =~ /^rejected by/) {
3454: &logthis("Subscribe returned $remoteurl: $filename");
3455: return 'forbidden';
3456: } elsif ($remoteurl eq 'directory') {
3457: return 'ok';
3458: } else {
3459: my $author=$filename;
3460: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3461: my ($udom,$uname)=split(/\//,$author);
3462: my $home=homeserver($uname,$udom);
3463: unless ($home eq $perlvar{'lonHostID'}) {
3464: my @parts=split(/\//,$filename);
3465: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3466: if ($path ne "$londocroot/res") {
3467: &logthis("Malconfiguration for replication: $filename");
3468: return 'bad_request';
3469: }
3470: my $count;
3471: for ($count=5;$count<$#parts;$count++) {
3472: $path.="/$parts[$count]";
3473: if ((-e $path)!=1) {
3474: mkdir($path,0777);
3475: }
3476: }
3477: my $request=new HTTP::Request('GET',"$remoteurl");
3478: my $response;
3479: if ($remoteurl =~ m{/raw/}) {
3480: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3481: } else {
3482: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3483: }
3484: if ($response->is_error()) {
3485: unlink($transname);
3486: my $message=$response->status_line;
3487: &logthis("<font color=\"blue\">WARNING:"
3488: ." LWP get: $message: $filename</font>");
3489: return 'unavailable';
3490: } else {
3491: if ($remoteurl!~/\.meta$/) {
3492: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3493: my $mresponse;
3494: if ($remoteurl =~ m{/raw/}) {
3495: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3496: } else {
3497: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3498: }
3499: if ($mresponse->is_error()) {
3500: unlink($filename.'.meta');
3501: &logthis(
3502: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3503: }
3504: }
3505: rename($transname,$filename);
3506: return 'ok';
3507: }
3508: }
3509: }
3510: }
3511:
3512: # ------------------------------------------------- Unsubscribe from a resource
3513:
3514: sub unsubscribe {
3515: my ($fname) = @_;
3516: my $answer;
3517: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return $answer; }
3518: $fname=~s/[\n\r]//g;
3519: my $author=$fname;
3520: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3521: my ($udom,$uname)=split(/\//,$author);
3522: my $home=homeserver($uname,$udom);
3523: if ($home eq 'no_host') {
3524: $answer = 'no_host';
3525: } elsif (grep { $_ eq $home } ¤t_machine_ids()) {
3526: $answer = 'home';
3527: } else {
3528: my $defdom = $perlvar{'lonDefDomain'};
3529: if (&will_trust('content',$defdom,$udom)) {
3530: $answer = reply("unsub:$fname",$home);
3531: } else {
3532: $answer = 'untrusted';
3533: }
3534: }
3535: return $answer;
3536: }
3537:
3538: # ------------------------------------------------ Get server side include body
3539: sub ssi_body {
3540: my ($filelink,%form)=@_;
3541: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3542: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3543: }
3544: my $output='';
3545: my $response;
3546: if ($filelink=~/^https?\:/) {
3547: ($output,$response)=&externalssi($filelink);
3548: } else {
3549: $filelink .= $filelink=~/\?/ ? '&' : '?';
3550: $filelink .= 'inhibitmenu=yes';
3551: ($output,$response)=&ssi($filelink,%form);
3552: }
3553: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3554: $output=~s/^.*?\<body[^\>]*\>//si;
3555: $output=~s/\<\/body\s*\>.*?$//si;
3556: if (wantarray) {
3557: return ($output, $response);
3558: } else {
3559: return $output;
3560: }
3561: }
3562:
3563: # --------------------------------------------------------- Server Side Include
3564:
3565: sub absolute_url {
3566: my ($host_name,$unalias,$keep_proto) = @_;
3567: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3568: if ($host_name eq '') {
3569: $host_name = $ENV{'SERVER_NAME'};
3570: }
3571: if ($unalias) {
3572: my $alias = &get_proxy_alias();
3573: if ($alias eq $host_name) {
3574: my $lonhost = $perlvar{'lonHostID'};
3575: my $hostname = &hostname($lonhost);
3576: my $lcproto;
3577: if (($keep_proto) || ($hostname eq '')) {
3578: $lcproto = $protocol;
3579: } else {
3580: $lcproto = $protocol{$lonhost};
3581: $lcproto = 'http' if ($lcproto ne 'https');
3582: $lcproto .= '://';
3583: }
3584: unless ($hostname eq '') {
3585: return $lcproto.$hostname;
3586: }
3587: }
3588: }
3589: return $protocol.$host_name;
3590: }
3591:
3592: #
3593: # Server side include.
3594: # Parameters:
3595: # fn Possibly encrypted resource name/id.
3596: # form Hash that describes how the rendering should be done
3597: # and other things.
3598: # Returns:
3599: # Scalar context: The content of the response.
3600: # Array context: 2 element list of the content and the full response object.
3601: #
3602: sub ssi {
3603:
3604: my ($fn,%form)=@_;
3605: my ($host,$request,$response);
3606: $host = &absolute_url('',1);
3607:
3608: $form{'no_update_last_known'}=1;
3609: &Apache::lonenc::check_encrypt(\$fn);
3610: if (%form) {
3611: $request=new HTTP::Request('POST',$host.$fn);
3612: $request->content(join('&',map {
3613: my $name = escape($_);
3614: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3615: ? join("&$name=", map {escape($_) } @{$form{$_}})
3616: : &escape($form{$_}) );
3617: } keys(%form)));
3618: } else {
3619: $request=new HTTP::Request('GET',$host.$fn);
3620: }
3621:
3622: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3623: my $lonhost = $perlvar{'lonHostID'};
3624: my $islocal;
3625: if (($env{'request.course.id'}) &&
3626: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3627: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3628: ($form{'grade_symb'} ne '') &&
3629: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3630: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3631: $islocal = 1;
3632: }
3633: $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3634: '','','',$islocal);
3635:
3636: if (wantarray) {
3637: return ($response->content, $response);
3638: } else {
3639: return $response->content;
3640: }
3641: }
3642:
3643: sub externalssi {
3644: my ($url)=@_;
3645: my $request=new HTTP::Request('GET',$url);
3646: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3647: if (wantarray) {
3648: return ($response->content, $response);
3649: } else {
3650: return $response->content;
3651: }
3652: }
3653:
3654:
3655: # If the local copy of a replicated resource is outdated, trigger a
3656: # connection from the homeserver to flush the delayed queue. If no update
3657: # happens, remove local copies of outdated resource (and corresponding
3658: # metadata file).
3659:
3660: sub remove_stale_resfile {
3661: my ($url) = @_;
3662: my $removed;
3663: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3664: my $audom = $1;
3665: my $auname = $2;
3666: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3667: my $homeserver = &homeserver($auname,$audom);
3668: unless (($homeserver eq 'no_host') ||
3669: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3670: my $fname = &filelocation('',$url);
3671: if (-e $fname) {
3672: my $hostname = &hostname($homeserver);
3673: if ($hostname) {
3674: my $protocol = $protocol{$homeserver};
3675: $protocol = 'http' if ($protocol ne 'https');
3676: my $uri = &declutter($url);
3677: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3678: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3679: if ($response->is_success()) {
3680: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3681: my $locmodtime = (stat($fname))[9];
3682: if ($locmodtime < $remmodtime) {
3683: my $stale;
3684: my $answer = &reply('pong',$homeserver);
3685: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3686: sleep(0.2);
3687: $locmodtime = (stat($fname))[9];
3688: if ($locmodtime < $remmodtime) {
3689: my $posstransfer = $fname.'.in.transfer';
3690: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3691: $removed = 1;
3692: } else {
3693: $stale = 1;
3694: }
3695: } else {
3696: $removed = 1;
3697: }
3698: } else {
3699: $stale = 1;
3700: }
3701: if ($stale) {
3702: if (unlink($fname)) {
3703: if ($uri!~/\.meta$/) {
3704: if (-e $fname.'.meta') {
3705: unlink($fname.'.meta');
3706: }
3707: }
3708: my $unsubresult = &unsubscribe($fname);
3709: unless ($unsubresult eq 'ok') {
3710: &logthis("no unsub of $fname from $homeserver, reason: $unsubresult");
3711: }
3712: $removed = 1;
3713: }
3714: }
3715: }
3716: }
3717: }
3718: }
3719: }
3720: }
3721: }
3722: return $removed;
3723: }
3724:
3725: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3726:
3727: sub allowuploaded {
3728: my ($srcurl,$url)=@_;
3729: $url=&clutter(&declutter($url));
3730: my $dir=$url;
3731: $dir=~s/\/[^\/]+$//;
3732: my %httpref=();
3733: my $httpurl=&hreflocation('',$url);
3734: $httpref{'httpref.'.$httpurl}=$srcurl;
3735: &Apache::lonnet::appenv(\%httpref);
3736: }
3737:
3738: #
3739: # Determine if the current user should be able to edit a particular resource,
3740: # when viewing in course context.
3741: # (a) When viewing resource used to determine if "Edit" item is included in
3742: # Functions.
3743: # (b) When displaying folder contents in course editor, used to determine if
3744: # "Edit" link will be displayed alongside resource.
3745: #
3746: # input: six args -- filename (decluttered), course number, course domain,
3747: # url, symb (if registered) and group (if this is a group
3748: # item -- e.g., bulletin board, group page etc.).
3749: # output: array of five scalars --
3750: # $cfile -- url for file editing if editable on current server
3751: # $home -- homeserver of resource (i.e., for author if published,
3752: # or course if uploaded.).
3753: # $switchserver -- 1 if server switch will be needed.
3754: # $forceedit -- 1 if icon/link should be to go to edit mode
3755: # $forceview -- 1 if icon/link should be to go to view mode
3756: #
3757:
3758: sub can_edit_resource {
3759: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3760: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3761: #
3762: # For aboutme pages user can only edit his/her own.
3763: #
3764: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3765: my ($sdom,$sname) = ($1,$2);
3766: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3767: $home = $env{'user.home'};
3768: $cfile = $resurl;
3769: if ($env{'form.forceedit'}) {
3770: $forceview = 1;
3771: } else {
3772: $forceedit = 1;
3773: }
3774: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3775: } else {
3776: return;
3777: }
3778: }
3779:
3780: if ($env{'request.course.id'}) {
3781: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3782: if ($group ne '') {
3783: # if this is a group homepage or group bulletin board, check group privs
3784: my $allowed = 0;
3785: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3786: if ((&allowed('mdg',$env{'request.course.id'}.
3787: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3788: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3789: $allowed = 1;
3790: }
3791: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3792: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3793: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3794: $allowed = 1;
3795: }
3796: }
3797: if ($allowed) {
3798: $home=&homeserver($cnum,$cdom);
3799: if ($env{'form.forceedit'}) {
3800: $forceview = 1;
3801: } else {
3802: $forceedit = 1;
3803: }
3804: $cfile = $resurl;
3805: } else {
3806: return;
3807: }
3808: } else {
3809: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3810: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3811: return;
3812: }
3813: } elsif (!$crsedit) {
3814: #
3815: # No edit allowed where CC has switched to student role.
3816: #
3817: return;
3818: }
3819: }
3820: }
3821:
3822: if ($file ne '') {
3823: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3824: if (&is_course_upload($file,$cnum,$cdom)) {
3825: $uploaded = 1;
3826: $incourse = 1;
3827: if ($file =~/\.(htm|html|css|js|txt)$/) {
3828: $cfile = &hreflocation('',$file);
3829: if ($env{'form.forceedit'}) {
3830: $forceview = 1;
3831: } else {
3832: $forceedit = 1;
3833: }
3834: }
3835: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3836: $incourse = 1;
3837: if ($env{'form.forceedit'}) {
3838: $forceview = 1;
3839: } else {
3840: $forceedit = 1;
3841: }
3842: $cfile = $resurl;
3843: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3844: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3845: $incourse = 1;
3846: if ($env{'form.forceedit'}) {
3847: $forceview = 1;
3848: } else {
3849: $forceedit = 1;
3850: }
3851: $cfile = $resurl;
3852: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3853: $incourse = 1;
3854: $cfile = $resurl.'/smpedit';
3855: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3856: $incourse = 1;
3857: if ($env{'form.forceedit'}) {
3858: $forceview = 1;
3859: } else {
3860: $forceedit = 1;
3861: }
3862: $cfile = $resurl;
3863: } elsif (($resurl =~ m{^/ext/}) && ($symb ne '')) {
3864: my ($map,$id,$res) = &decode_symb($symb);
3865: if ($map =~ /\.page$/) {
3866: $incourse = 1;
3867: if ($env{'form.forceedit'}) {
3868: $forceview = 1;
3869: $cfile = $map;
3870: } else {
3871: $forceedit = 1;
3872: $cfile = '/adm/wrapper'.$resurl;
3873: }
3874: }
3875: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3876: $incourse = 1;
3877: if ($env{'form.forceedit'}) {
3878: $forceview = 1;
3879: } else {
3880: $forceedit = 1;
3881: }
3882: $cfile = $resurl;
3883: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3884: $incourse = 1;
3885: if ($env{'form.forceedit'}) {
3886: $forceview = 1;
3887: } else {
3888: $forceedit = 1;
3889: }
3890: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3891: }
3892: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3893: my $template = '/res/lib/templates/simpleproblem.problem';
3894: if (&is_on_map($template)) {
3895: $incourse = 1;
3896: $forceview = 1;
3897: $cfile = $template;
3898: }
3899: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3900: $incourse = 1;
3901: if ($env{'form.forceedit'}) {
3902: $forceview = 1;
3903: } else {
3904: $forceedit = 1;
3905: }
3906: $cfile = $resurl;
3907: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3908: $incourse = 1;
3909: if ($env{'form.forceedit'}) {
3910: $forceview = 1;
3911: } else {
3912: $forceedit = 1;
3913: }
3914: $cfile = $resurl;
3915: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3916: $incourse = 1;
3917: $forceview = 1;
3918: if ($symb) {
3919: my ($map,$id,$res)=&decode_symb($symb);
3920: $env{'request.symb'} = $symb;
3921: $cfile = &clutter($res);
3922: } else {
3923: $cfile = $env{'form.suppurl'};
3924: my $escfile = &unescape($cfile);
3925: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3926: $cfile = '/adm/wrapper'.$escfile;
3927: } else {
3928: $escfile =~ s{^http://}{};
3929: $cfile = &escape("/adm/wrapper/ext/$escfile");
3930: }
3931: }
3932: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3933: if ($env{'form.forceedit'}) {
3934: $forceview = 1;
3935: } else {
3936: $forceedit = 1;
3937: }
3938: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3939: }
3940: }
3941: if ($uploaded || $incourse) {
3942: $home=&homeserver($cnum,$cdom);
3943: } elsif ($file !~ m{/$}) {
3944: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3945: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3946: # Check that the user has permission to edit this resource
3947: my $setpriv = 1;
3948: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3949: if (defined($cfudom)) {
3950: $home=&homeserver($cfuname,$cfudom);
3951: $cfile=$file;
3952: }
3953: }
3954: if (($cfile ne '') && (!$incourse || $uploaded) &&
3955: (($home ne '') && ($home ne 'no_host'))) {
3956: my @ids=¤t_machine_ids();
3957: unless (grep(/^\Q$home\E$/,@ids)) {
3958: $switchserver=1;
3959: }
3960: }
3961: }
3962: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3963: }
3964:
3965: sub is_course_upload {
3966: my ($file,$cnum,$cdom) = @_;
3967: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3968: $uploadpath =~ s{^\/}{};
3969: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3970: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3971: return 1;
3972: }
3973: return;
3974: }
3975:
3976: sub in_course {
3977: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3978: if ($hideprivileged) {
3979: my $skipuser;
3980: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3981: my @possdoms = ($cdom);
3982: if ($coursehash{'checkforpriv'}) {
3983: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3984: }
3985: if (&privileged($uname,$udom,\@possdoms)) {
3986: $skipuser = 1;
3987: if ($coursehash{'nothideprivileged'}) {
3988: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3989: my $user;
3990: if ($item =~ /:/) {
3991: $user = $item;
3992: } else {
3993: $user = join(':',split(/[\@]/,$item));
3994: }
3995: if ($user eq $uname.':'.$udom) {
3996: undef($skipuser);
3997: last;
3998: }
3999: }
4000: }
4001: if ($skipuser) {
4002: return 0;
4003: }
4004: }
4005: }
4006: $type ||= 'any';
4007: if (!defined($cdom) || !defined($cnum)) {
4008: my $cid = $env{'request.course.id'};
4009: $cdom = $env{'course.'.$cid.'.domain'};
4010: $cnum = $env{'course.'.$cid.'.num'};
4011: }
4012: my $typesref;
4013: if (($type eq 'any') || ($type eq 'all')) {
4014: $typesref = ['active','previous','future'];
4015: } elsif ($type eq 'previous' || $type eq 'future') {
4016: $typesref = [$type];
4017: }
4018: my %roles = &get_my_roles($uname,$udom,'userroles',
4019: $typesref,undef,[$cdom]);
4020: my ($tmp) = keys(%roles);
4021: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
4022: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
4023: if (@course_roles > 0) {
4024: return 1;
4025: }
4026: return 0;
4027: }
4028:
4029: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
4030: # input: action, courseID, current domain, intended
4031: # path to file, source of file, instruction to parse file for objects,
4032: # ref to hash for embedded objects,
4033: # ref to hash for codebase of java objects.
4034: # reference to scalar to accommodate mime type determined
4035: # from File::MMagic if $parser = parse.
4036: #
4037: # output: url to file (if action was uploaddoc),
4038: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
4039: #
4040: # Allows directory structure to be used within lonUsers/../userfiles/ for a
4041: # course.
4042: #
4043: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4044: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
4045: # course's home server.
4046: #
4047: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
4048: # be copied from $source (current location) to
4049: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4050: # and will then be copied to
4051: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
4052: # course's home server.
4053: #
4054: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4055: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
4056: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4057: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
4058: # in course's home server.
4059: #
4060:
4061: sub process_coursefile {
4062: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
4063: $mimetype)=@_;
4064: my $fetchresult;
4065: my $home=&homeserver($docuname,$docudom);
4066: if ($action eq 'propagate') {
4067: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4068: $home);
4069: } else {
4070: my $fpath = '';
4071: my $fname = $file;
4072: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
4073: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
4074: my $filepath = &build_filepath($fpath);
4075: if ($action eq 'copy') {
4076: if ($source eq '') {
4077: $fetchresult = 'no source file';
4078: return $fetchresult;
4079: } else {
4080: my $destination = $filepath.'/'.$fname;
4081: rename($source,$destination);
4082: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4083: $home);
4084: }
4085: } elsif ($action eq 'uploaddoc') {
4086: open(my $fh,'>',$filepath.'/'.$fname);
4087: print $fh $env{'form.'.$source};
4088: close($fh);
4089: if ($parser eq 'parse') {
4090: my $mm = new File::MMagic;
4091: my $type = $mm->checktype_filename($filepath.'/'.$fname);
4092: if ($type eq 'text/html') {
4093: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
4094: unless ($parse_result eq 'ok') {
4095: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
4096: }
4097: }
4098: if (ref($mimetype)) {
4099: $$mimetype = $type;
4100: }
4101: }
4102: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4103: $home);
4104: if ($fetchresult eq 'ok') {
4105: return '/uploaded/'.$fpath.'/'.$fname;
4106: } else {
4107: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4108: ' to host '.$home.': '.$fetchresult);
4109: return '/adm/notfound.html';
4110: }
4111: }
4112: }
4113: unless ( $fetchresult eq 'ok') {
4114: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4115: ' to host '.$home.': '.$fetchresult);
4116: }
4117: return $fetchresult;
4118: }
4119:
4120: sub build_filepath {
4121: my ($fpath) = @_;
4122: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
4123: unless ($fpath eq '') {
4124: my @parts=split('/',$fpath);
4125: foreach my $part (@parts) {
4126: $filepath.= '/'.$part;
4127: if ((-e $filepath)!=1) {
4128: mkdir($filepath,0777);
4129: }
4130: }
4131: }
4132: return $filepath;
4133: }
4134:
4135: sub store_edited_file {
4136: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
4137: my $file = $primary_url;
4138: $file =~ s#^/uploaded/$docudom/$docuname/##;
4139: my $fpath = '';
4140: my $fname = $file;
4141: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
4142: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
4143: my $filepath = &build_filepath($fpath);
4144: open(my $fh,'>',$filepath.'/'.$fname);
4145: print $fh $content;
4146: close($fh);
4147: my $home=&homeserver($docuname,$docudom);
4148: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4149: $home);
4150: if ($$fetchresult eq 'ok') {
4151: return '/uploaded/'.$fpath.'/'.$fname;
4152: } else {
4153: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4154: ' to host '.$home.': '.$$fetchresult);
4155: return '/adm/notfound.html';
4156: }
4157: }
4158:
4159: sub clean_filename {
4160: my ($fname,$args)=@_;
4161: # Replace Windows backslashes by forward slashes
4162: $fname=~s/\\/\//g;
4163: if (!$args->{'keep_path'}) {
4164: # Get rid of everything but the actual filename
4165: $fname=~s/^.*\/([^\/]+)$/$1/;
4166: }
4167: # Replace spaces by underscores
4168: $fname=~s/\s+/\_/g;
4169: # Transliterate non-ascii text to ascii
4170: my $lang = &Apache::lonlocal::current_language();
4171: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
4172: # Replace all other weird characters by nothing
4173: $fname=~s{[^/\w\.\-]}{}g;
4174: # Replace all .\d. sequences with _\d. so they no longer look like version
4175: # numbers
4176: $fname=~s/\.(\d+)(?=\.)/_$1/g;
4177: # Replace three or more adjacent underscores with one for consistency
4178: # with loncfile::filename_check() so complete url can be extracted by
4179: # lonnet::decode_symb()
4180: $fname=~s/_{3,}/_/g;
4181: return $fname;
4182: }
4183:
4184: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
4185: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
4186: # image with the same aspect ratio as the original, but with dimensions which do
4187: # not exceed $resizewidth and $resizeheight.
4188:
4189: sub resizeImage {
4190: my ($img_path,$resizewidth,$resizeheight) = @_;
4191: my $ima = Image::Magick->new;
4192: my $resized;
4193: if (-e $img_path) {
4194: $ima->Read($img_path);
4195: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
4196: my $width = $ima->Get('width');
4197: my $height = $ima->Get('height');
4198: if ($width > $resizewidth) {
4199: my $factor = $width/$resizewidth;
4200: my $newheight = $height/$factor;
4201: $ima->Scale(width=>$resizewidth,height=>$newheight);
4202: $resized = 1;
4203: }
4204: }
4205: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
4206: my $width = $ima->Get('width');
4207: my $height = $ima->Get('height');
4208: if ($height > $resizeheight) {
4209: my $factor = $height/$resizeheight;
4210: my $newwidth = $width/$factor;
4211: $ima->Scale(width=>$newwidth,height=>$resizeheight);
4212: $resized = 1;
4213: }
4214: }
4215: if ($resized) {
4216: $ima->Write($img_path);
4217: }
4218: }
4219: return;
4220: }
4221:
4222: # --------------- Take an uploaded file and put it into the userfiles directory
4223: # input: $formname - the contents of the file are in $env{"form.$formname"}
4224: # the desired filename is in $env{"form.$formname.filename"}
4225: # $context - possible values: coursedoc, existingfile, overwrite,
4226: # canceloverwrite, scantron or ''.
4227: # if 'coursedoc': upload to the current course
4228: # if 'existingfile': write file to tmp/overwrites directory
4229: # if 'canceloverwrite': delete file written to tmp/overwrites directory
4230: # $context is passed as argument to &finishuserfileupload
4231: # $subdir - directory in userfile to store the file into
4232: # $parser - instruction to parse file for objects ($parser = parse) or
4233: # if context is 'scantron', $parser is hashref of csv column mapping
4234: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
4235: # Section => 4, CODE => 5, FirstQuestion => 9 }).
4236: # $allfiles - reference to hash for embedded objects
4237: # $codebase - reference to hash for codebase of java objects
4238: # $desuname - username for permanent storage of uploaded file
4239: # $dsetudom - domain for permanaent storage of uploaded file
4240: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
4241: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
4242: # $resizewidth - width (pixels) to which to resize uploaded image
4243: # $resizeheight - height (pixels) to which to resize uploaded image
4244: # $mimetype - reference to scalar to accommodate mime type determined
4245: # from File::MMagic.
4246: #
4247: # output: url of file in userspace, or error: <message>
4248: # or /adm/notfound.html if failure to upload occurse
4249:
4250: sub userfileupload {
4251: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
4252: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
4253: if (!defined($subdir)) { $subdir='unknown'; }
4254: my $fname=$env{'form.'.$formname.'.filename'};
4255: $fname=&clean_filename($fname);
4256: # See if there is anything left
4257: unless ($fname) { return 'error: no uploaded file'; }
4258: # If filename now begins with a . prepend unix timestamp _ milliseconds
4259: if ($fname =~ /^\./) {
4260: my ($s,$usec) = &gettimeofday();
4261: while (length($usec) < 6) {
4262: $usec = '0'.$usec;
4263: }
4264: $fname = $s.'_'.substr($usec,0,3).$fname;
4265: }
4266: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
4267: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
4268: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
4269: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4270: my $now = time;
4271: my $filepath;
4272: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
4273: $filepath = 'tmp/helprequests/'.$now;
4274: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
4275: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
4276: '_'.$env{'user.domain'}.'/pending';
4277: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4278: my ($docuname,$docudom);
4279: if ($destudom =~ /^$match_domain$/) {
4280: $docudom = $destudom;
4281: } else {
4282: $docudom = $env{'user.domain'};
4283: }
4284: if ($destuname =~ /^$match_username$/) {
4285: $docuname = $destuname;
4286: } else {
4287: $docuname = $env{'user.name'};
4288: }
4289: if (exists($env{'form.group'})) {
4290: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4291: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4292: }
4293: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4294: if ($context eq 'canceloverwrite') {
4295: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4296: if (-e $tempfile) {
4297: my @info = stat($tempfile);
4298: if ($info[9] eq $env{'form.timestamp'}) {
4299: unlink($tempfile);
4300: }
4301: }
4302: return;
4303: }
4304: }
4305: # Create the directory if not present
4306: my @parts=split(/\//,$filepath);
4307: my $fullpath = $perlvar{'lonDaemons'};
4308: for (my $i=0;$i<@parts;$i++) {
4309: $fullpath .= '/'.$parts[$i];
4310: if ((-e $fullpath)!=1) {
4311: mkdir($fullpath,0777);
4312: }
4313: }
4314: open(my $fh,'>',$fullpath.'/'.$fname);
4315: print $fh $env{'form.'.$formname};
4316: close($fh);
4317: if ($context eq 'existingfile') {
4318: my @info = stat($fullpath.'/'.$fname);
4319: return ($fullpath.'/'.$fname,$info[9]);
4320: } else {
4321: return $fullpath.'/'.$fname;
4322: }
4323: }
4324: if ($subdir eq 'scantron') {
4325: $fname = 'scantron_orig_'.$fname;
4326: } else {
4327: $fname="$subdir/$fname";
4328: }
4329: if ($context eq 'coursedoc') {
4330: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4331: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4332: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4333: return &finishuserfileupload($docuname,$docudom,
4334: $formname,$fname,$parser,$allfiles,
4335: $codebase,$thumbwidth,$thumbheight,
4336: $resizewidth,$resizeheight,$context,$mimetype);
4337: } else {
4338: if ($env{'form.folder'}) {
4339: $fname=$env{'form.folder'}.'/'.$fname;
4340: }
4341: return &process_coursefile('uploaddoc',$docuname,$docudom,
4342: $fname,$formname,$parser,
4343: $allfiles,$codebase,$mimetype);
4344: }
4345: } elsif (defined($destuname)) {
4346: my $docuname=$destuname;
4347: my $docudom=$destudom;
4348: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4349: $parser,$allfiles,$codebase,
4350: $thumbwidth,$thumbheight,
4351: $resizewidth,$resizeheight,$context,$mimetype);
4352: } else {
4353: my $docuname=$env{'user.name'};
4354: my $docudom=$env{'user.domain'};
4355: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4356: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4357: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4358: }
4359: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4360: $parser,$allfiles,$codebase,
4361: $thumbwidth,$thumbheight,
4362: $resizewidth,$resizeheight,$context,$mimetype);
4363: }
4364: }
4365:
4366: sub finishuserfileupload {
4367: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4368: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4369: my $path=$docudom.'/'.$docuname.'/';
4370: my $filepath=$perlvar{'lonDocRoot'};
4371:
4372: my ($fnamepath,$file,$fetchthumb);
4373: $file=$fname;
4374: if ($fname=~m|/|) {
4375: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4376: $path.=$fnamepath.'/';
4377: }
4378: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4379: my $count;
4380: for ($count=4;$count<=$#parts;$count++) {
4381: $filepath.="/$parts[$count]";
4382: if ((-e $filepath)!=1) {
4383: mkdir($filepath,0777);
4384: }
4385: }
4386:
4387: # Save the file
4388: {
4389: if (!open(FH,'>',$filepath.'/'.$file)) {
4390: &logthis('Failed to create '.$filepath.'/'.$file);
4391: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4392: return '/adm/notfound.html';
4393: }
4394: if ($context eq 'overwrite') {
4395: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4396: my $target = $filepath.'/'.$file;
4397: if (-e $source) {
4398: my @info = stat($source);
4399: if ($info[9] eq $env{'form.timestamp'}) {
4400: unless (&File::Copy::move($source,$target)) {
4401: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4402: return "Moving from $source failed";
4403: }
4404: } else {
4405: return "Temporary file: $source had unexpected date/time for last modification";
4406: }
4407: } else {
4408: return "Temporary file: $source missing";
4409: }
4410: } elsif (!print FH ($env{'form.'.$formname})) {
4411: &logthis('Failed to write to '.$filepath.'/'.$file);
4412: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4413: return '/adm/notfound.html';
4414: }
4415: close(FH);
4416: if ($resizewidth && $resizeheight) {
4417: my $mm = new File::MMagic;
4418: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4419: if ($mime_type =~ m{^image/}) {
4420: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4421: }
4422: }
4423: }
4424: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4425: if (ref($mimetype)) {
4426: if ($$mimetype eq '') {
4427: my $mm = new File::MMagic;
4428: my $type = $mm->checktype_filename($filepath.'/'.$file);
4429: $$mimetype = $type;
4430: }
4431: }
4432: }
4433: if (($context ne 'scantron') && ($parser eq 'parse')) {
4434: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4435: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4436: $allfiles,$codebase);
4437: unless ($parse_result eq 'ok') {
4438: &logthis('Failed to parse '.$filepath.$file.
4439: ' for embedded media: '.$parse_result);
4440: }
4441: }
4442: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4443: my $format = $env{'form.scantron_format'};
4444: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4445: }
4446: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4447: my $input = $filepath.'/'.$file;
4448: my $output = $filepath.'/'.'tn-'.$file;
4449: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4450: my @args = ('convert','-sample',$thumbsize,$input,$output);
4451: system({$args[0]} @args);
4452: if (-e $filepath.'/'.'tn-'.$file) {
4453: $fetchthumb = 1;
4454: }
4455: }
4456:
4457: # Notify homeserver to grep it
4458: #
4459: my $docuhome=&homeserver($docuname,$docudom);
4460: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4461: if ($fetchresult eq 'ok') {
4462: if ($fetchthumb) {
4463: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4464: if ($thumbresult ne 'ok') {
4465: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4466: $docuhome.': '.$thumbresult);
4467: }
4468: }
4469: #
4470: # Return the URL to it
4471: return '/uploaded/'.$path.$file;
4472: } else {
4473: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4474: ': '.$fetchresult);
4475: return '/adm/notfound.html';
4476: }
4477: }
4478:
4479: sub extract_embedded_items {
4480: my ($fullpath,$allfiles,$codebase,$content) = @_;
4481: my @state = ();
4482: my (%lastids,%related,%shockwave,%flashvars);
4483: my %javafiles = (
4484: codebase => '',
4485: code => '',
4486: archive => ''
4487: );
4488: my %mediafiles = (
4489: src => '',
4490: movie => '',
4491: );
4492: my $p;
4493: if ($content) {
4494: $p = HTML::LCParser->new($content);
4495: } else {
4496: $p = HTML::LCParser->new($fullpath);
4497: }
4498: while (my $t=$p->get_token()) {
4499: if ($t->[0] eq 'S') {
4500: my ($tagname, $attr) = ($t->[1],$t->[2]);
4501: push(@state, $tagname);
4502: if (lc($tagname) eq 'allow') {
4503: &add_filetype($allfiles,$attr->{'src'},'src');
4504: }
4505: if (lc($tagname) eq 'img') {
4506: &add_filetype($allfiles,$attr->{'src'},'src');
4507: }
4508: if (lc($tagname) eq 'a') {
4509: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4510: &add_filetype($allfiles,$attr->{'href'},'href');
4511: }
4512: }
4513: if (lc($tagname) eq 'script') {
4514: my $src;
4515: if ($attr->{'archive'} =~ /\.jar$/i) {
4516: &add_filetype($allfiles,$attr->{'archive'},'archive');
4517: } else {
4518: if ($attr->{'src'} ne '') {
4519: $src = $attr->{'src'};
4520: &add_filetype($allfiles,$src,'src');
4521: }
4522: }
4523: my $text = $p->get_trimmed_text();
4524: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4525: my @swfargs = split(/,/,$1);
4526: foreach my $item (@swfargs) {
4527: $item =~ s/["']//g;
4528: $item =~ s/^\s+//;
4529: $item =~ s/\s+$//;
4530: }
4531: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4532: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4533: push(@{$related{$swfargs[0]}},$swfargs[2]);
4534: } else {
4535: $related{$swfargs[0]} = [$swfargs[2]];
4536: }
4537: }
4538: }
4539: }
4540: if (lc($tagname) eq 'link') {
4541: if (lc($attr->{'rel'}) eq 'stylesheet') {
4542: &add_filetype($allfiles,$attr->{'href'},'href');
4543: }
4544: }
4545: if (lc($tagname) eq 'object' ||
4546: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4547: foreach my $item (keys(%javafiles)) {
4548: $javafiles{$item} = '';
4549: }
4550: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4551: $lastids{lc($tagname)} = $attr->{'id'};
4552: }
4553: }
4554: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4555: my $name = lc($attr->{'name'});
4556: foreach my $item (keys(%javafiles)) {
4557: if ($name eq $item) {
4558: $javafiles{$item} = $attr->{'value'};
4559: last;
4560: }
4561: }
4562: my $pathfrom;
4563: foreach my $item (keys(%mediafiles)) {
4564: if ($name eq $item) {
4565: $pathfrom = $attr->{'value'};
4566: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4567: &add_filetype($allfiles,$pathfrom,$name);
4568: last;
4569: }
4570: }
4571: if ($name eq 'flashvars') {
4572: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4573: }
4574: if ($pathfrom ne '') {
4575: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4576: $pathfrom);
4577: }
4578: }
4579: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4580: foreach my $item (keys(%javafiles)) {
4581: if ($attr->{$item}) {
4582: $javafiles{$item} = $attr->{$item};
4583: last;
4584: }
4585: }
4586: foreach my $item (keys(%mediafiles)) {
4587: if ($attr->{$item}) {
4588: &add_filetype($allfiles,$attr->{$item},$item);
4589: last;
4590: }
4591: }
4592: if (lc($tagname) eq 'embed') {
4593: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4594: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4595: $attr->{'src'});
4596: }
4597: }
4598: }
4599: if (lc($tagname) eq 'iframe') {
4600: my $src = $attr->{'src'} ;
4601: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4602: &add_filetype($allfiles,$src,'src');
4603: } elsif ($src =~ m{^/}) {
4604: if ($env{'request.course.id'}) {
4605: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4606: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4607: my $url = &hreflocation('',$fullpath);
4608: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4609: my $relpath = $1;
4610: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4611: &add_filetype($allfiles,$1,'src');
4612: }
4613: }
4614: }
4615: }
4616: }
4617: if ($t->[4] =~ m{/>$}) {
4618: pop(@state);
4619: }
4620: } elsif ($t->[0] eq 'E') {
4621: my ($tagname) = ($t->[1]);
4622: if ($javafiles{'codebase'} ne '') {
4623: $javafiles{'codebase'} .= '/';
4624: }
4625: if (lc($tagname) eq 'applet' ||
4626: lc($tagname) eq 'object' ||
4627: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4628: ) {
4629: foreach my $item (keys(%javafiles)) {
4630: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4631: my $file=$javafiles{'codebase'}.$javafiles{$item};
4632: &add_filetype($allfiles,$file,$item);
4633: }
4634: }
4635: }
4636: pop @state;
4637: }
4638: }
4639: foreach my $id (sort(keys(%flashvars))) {
4640: if ($shockwave{$id} ne '') {
4641: my @pairs = split(/\&/,$flashvars{$id});
4642: foreach my $pair (@pairs) {
4643: my ($key,$value) = split(/\=/,$pair);
4644: if ($key eq 'thumb') {
4645: &add_filetype($allfiles,$value,$key);
4646: } elsif ($key eq 'content') {
4647: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4648: my ($ext) = ($value =~ /\.([^.]+)$/);
4649: if ($ext ne '') {
4650: &add_filetype($allfiles,$path.$value,$ext);
4651: }
4652: }
4653: }
4654: }
4655: }
4656: return 'ok';
4657: }
4658:
4659: sub add_filetype {
4660: my ($allfiles,$file,$type)=@_;
4661: if (exists($allfiles->{$file})) {
4662: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4663: push(@{$allfiles->{$file}}, &escape($type));
4664: }
4665: } else {
4666: @{$allfiles->{$file}} = (&escape($type));
4667: }
4668: }
4669:
4670: sub embedded_dependency {
4671: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4672: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4673: if (($identifier ne '') &&
4674: (ref($related->{$identifier}) eq 'ARRAY') &&
4675: ($pathfrom ne '')) {
4676: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4677: foreach my $dep (@{$related->{$identifier}}) {
4678: &add_filetype($allfiles,$path.$dep,'object');
4679: }
4680: }
4681: }
4682: return;
4683: }
4684:
4685: sub bubblesheet_converter {
4686: my ($cdom,$fullpath,$config,$format) = @_;
4687: if ((&domain($cdom) ne '') &&
4688: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4689: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4690: my (%csvcols,%csvoptions);
4691: if (ref($config->{'fields'}) eq 'HASH') {
4692: %csvcols = %{$config->{'fields'}};
4693: }
4694: if (ref($config->{'options'}) eq 'HASH') {
4695: %csvoptions = %{$config->{'options'}};
4696: }
4697: my %csvbynum = reverse(%csvcols);
4698: my %scantronconf = &get_scantron_config($format,$cdom);
4699: if (keys(%scantronconf)) {
4700: my %bynum = (
4701: $scantronconf{CODEstart} => 'CODEstart',
4702: $scantronconf{IDstart} => 'IDstart',
4703: $scantronconf{PaperID} => 'PaperID',
4704: $scantronconf{FirstName} => 'FirstName',
4705: $scantronconf{LastName} => 'LastName',
4706: $scantronconf{Qstart} => 'Qstart',
4707: );
4708: my @ordered;
4709: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4710: push(@ordered,$bynum{$item});
4711: }
4712: my %mapstart = (
4713: CODEstart => 'CODE',
4714: IDstart => 'ID',
4715: PaperID => 'PaperID',
4716: FirstName => 'FirstName',
4717: LastName => 'LastName',
4718: Qstart => 'FirstQuestion',
4719: );
4720: my %maplength = (
4721: CODEstart => 'CODElength',
4722: IDstart => 'IDlength',
4723: PaperID => 'PaperIDlength',
4724: FirstName => 'FirstNamelength',
4725: LastName => 'LastNamelength',
4726: );
4727: if (open(my $fh,'<',$fullpath)) {
4728: my $output;
4729: my %lettdig = &letter_to_digits();
4730: my %diglett = reverse(%lettdig);
4731: my $numletts = scalar(keys(%lettdig));
4732: my $num = 0;
4733: while (my $line=<$fh>) {
4734: $num ++;
4735: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4736: $line =~ s{[\r\n]+$}{};
4737: my %found;
4738: my @values = split(/,/,$line,-1);
4739: my ($qstart,$record);
4740: for (my $i=0; $i<@values; $i++) {
4741: if ((($qstart ne '') && ($i > $qstart)) ||
4742: ($csvbynum{$i} eq 'FirstQuestion')) {
4743: if ($values[$i] eq '') {
4744: $values[$i] = $scantronconf{'Qoff'};
4745: } elsif ($scantronconf{'Qon'} eq 'number') {
4746: if ($values[$i] =~ /^[A-Ja-j]$/) {
4747: $values[$i] = $lettdig{uc($values[$i])};
4748: }
4749: } elsif ($scantronconf{'Qon'} eq 'letter') {
4750: if ($values[$i] =~ /^[0-9]$/) {
4751: $values[$i] = $diglett{$values[$i]};
4752: }
4753: } else {
4754: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4755: my $digit;
4756: if ($values[$i] =~ /^[A-Ja-j]$/) {
4757: $digit = $lettdig{uc($values[$i])}-1;
4758: if ($values[$i] eq 'J') {
4759: $digit += $numletts;
4760: }
4761: } elsif ($values[$i] =~ /^[0-9]$/) {
4762: $digit = $values[$i]-1;
4763: if ($values[$i] eq '0') {
4764: $digit += $numletts;
4765: }
4766: }
4767: my $qval='';
4768: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4769: if ($j == $digit) {
4770: $qval .= $scantronconf{'Qon'};
4771: } else {
4772: $qval .= $scantronconf{'Qoff'};
4773: }
4774: }
4775: $values[$i] = $qval;
4776: }
4777: }
4778: if (length($values[$i]) > $scantronconf{'Qlength'}) {
4779: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
4780: }
4781: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
4782: if ($numblank > 0) {
4783: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
4784: }
4785: if ($csvbynum{$i} eq 'FirstQuestion') {
4786: $qstart = $i;
4787: $found{$csvbynum{$i}} = $values[$i];
4788: } else {
4789: $found{'FirstQuestion'} .= $values[$i];
4790: }
4791: } elsif (exists($csvbynum{$i})) {
4792: if ($csvoptions{'rem'}) {
4793: $values[$i] =~ s/^\s+//;
4794: }
4795: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
4796: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
4797: $values[$i] = '0'.$values[$i];
4798: }
4799: }
4800: $found{$csvbynum{$i}} = $values[$i];
4801: }
4802: }
4803: foreach my $item (@ordered) {
4804: my $currlength = 1+length($record);
4805: my $numspaces = $scantronconf{$item} - $currlength;
4806: if ($numspaces > 0) {
4807: $record .= (' ' x $numspaces);
4808: }
4809: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
4810: unless ($item eq 'Qstart') {
4811: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
4812: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
4813: }
4814: }
4815: $record .= $found{$mapstart{$item}};
4816: }
4817: }
4818: $output .= "$record\n";
4819: }
4820: close($fh);
4821: if ($output) {
4822: if (open(my $fh,'>',$fullpath)) {
4823: print $fh $output;
4824: close($fh);
4825: }
4826: }
4827: }
4828: }
4829: return;
4830: }
4831: }
4832:
4833: sub letter_to_digits {
4834: my %lettdig = (
4835: A => 1,
4836: B => 2,
4837: C => 3,
4838: D => 4,
4839: E => 5,
4840: F => 6,
4841: G => 7,
4842: H => 8,
4843: I => 9,
4844: J => 0,
4845: );
4846: return %lettdig;
4847: }
4848:
4849: sub get_scantron_config {
4850: my ($which,$cdom) = @_;
4851: my @lines = &get_scantronformat_file($cdom);
4852: my %config;
4853: #FIXME probably should move to XML it has already gotten a bit much now
4854: foreach my $line (@lines) {
4855: my ($name,$descrip)=split(/:/,$line);
4856: if ($name ne $which ) { next; }
4857: chomp($line);
4858: my @config=split(/:/,$line);
4859: $config{'name'}=$config[0];
4860: $config{'description'}=$config[1];
4861: $config{'CODElocation'}=$config[2];
4862: $config{'CODEstart'}=$config[3];
4863: $config{'CODElength'}=$config[4];
4864: $config{'IDstart'}=$config[5];
4865: $config{'IDlength'}=$config[6];
4866: $config{'Qstart'}=$config[7];
4867: $config{'Qlength'}=$config[8];
4868: $config{'Qoff'}=$config[9];
4869: $config{'Qon'}=$config[10];
4870: $config{'PaperID'}=$config[11];
4871: $config{'PaperIDlength'}=$config[12];
4872: $config{'FirstName'}=$config[13];
4873: $config{'FirstNamelength'}=$config[14];
4874: $config{'LastName'}=$config[15];
4875: $config{'LastNamelength'}=$config[16];
4876: $config{'BubblesPerRow'}=$config[17];
4877: last;
4878: }
4879: return %config;
4880: }
4881:
4882: sub get_scantronformat_file {
4883: my ($cdom) = @_;
4884: if ($cdom eq '') {
4885: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
4886: }
4887: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
4888: my $gottab = 0;
4889: my @lines;
4890: if (ref($domconfig{'scantron'}) eq 'HASH') {
4891: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
4892: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
4893: if ($formatfile ne '-1') {
4894: @lines = split("\n",$formatfile,-1);
4895: $gottab = 1;
4896: }
4897: }
4898: }
4899: if (!$gottab) {
4900: my $confname = $cdom.'-domainconfig';
4901: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
4902: my $formatfile = &getfile($default);
4903: if ($formatfile ne '-1') {
4904: @lines = split("\n",$formatfile,-1);
4905: $gottab = 1;
4906: }
4907: }
4908: if (!$gottab) {
4909: my @domains = ¤t_machine_domains();
4910: if (grep(/^\Q$cdom\E$/,@domains)) {
4911: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
4912: @lines = <$fh>;
4913: close($fh);
4914: }
4915: } else {
4916: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
4917: @lines = <$fh>;
4918: close($fh);
4919: }
4920: }
4921: chomp(@lines);
4922: }
4923: return @lines;
4924: }
4925:
4926: sub removeuploadedurl {
4927: my ($url)=@_;
4928: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4929: return &removeuserfile($uname,$udom,$fname);
4930: }
4931:
4932: sub removeuserfile {
4933: my ($docuname,$docudom,$fname)=@_;
4934: my $home=&homeserver($docuname,$docudom);
4935: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4936: if ($result eq 'ok') {
4937: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4938: my $metafile = $fname.'.meta';
4939: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4940: my $url = "/uploaded/$docudom/$docuname/$fname";
4941: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4942: my $sqlresult =
4943: &update_portfolio_table($docuname,$docudom,$file,
4944: 'portfolio_metadata',$group,
4945: 'delete');
4946: }
4947: }
4948: return $result;
4949: }
4950:
4951: sub mkdiruserfile {
4952: my ($docuname,$docudom,$dir)=@_;
4953: my $home=&homeserver($docuname,$docudom);
4954: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4955: }
4956:
4957: sub renameuserfile {
4958: my ($docuname,$docudom,$old,$new)=@_;
4959: my $home=&homeserver($docuname,$docudom);
4960: my $result = &reply("renameuserfile:$docudom:$docuname:".
4961: &escape("$old").':'.&escape("$new"),$home);
4962: if ($result eq 'ok') {
4963: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4964: my $oldmeta = $old.'.meta';
4965: my $newmeta = $new.'.meta';
4966: my $metaresult =
4967: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4968: my $url = "/uploaded/$docudom/$docuname/$old";
4969: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4970: my $sqlresult =
4971: &update_portfolio_table($docuname,$docudom,$file,
4972: 'portfolio_metadata',$group,
4973: 'delete');
4974: }
4975: }
4976: return $result;
4977: }
4978:
4979: # ------------------------------------------------------------------------- Log
4980:
4981: sub log {
4982: my ($dom,$nam,$hom,$what)=@_;
4983: return critical("log:$dom:$nam:$what",$hom);
4984: }
4985:
4986: # ------------------------------------------------------------------ Course Log
4987: #
4988: # This routine flushes several buffers of non-mission-critical nature
4989: #
4990:
4991: sub flushcourselogs {
4992: &logthis('Flushing log buffers');
4993: #
4994: # course logs
4995: # This is a log of all transactions in a course, which can be used
4996: # for data mining purposes
4997: #
4998: # It also collects the courseid database, which lists last transaction
4999: # times and course titles for all courseids
5000: #
5001: my %courseidbuffer=();
5002: foreach my $crsid (keys(%courselogs)) {
5003: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
5004: &escape($courselogs{$crsid}),
5005: $coursehombuf{$crsid}) eq 'ok') {
5006: delete $courselogs{$crsid};
5007: } else {
5008: &logthis('Failed to flush log buffer for '.$crsid);
5009: if (length($courselogs{$crsid})>40000) {
5010: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
5011: " exceeded maximum size, deleting.</font>");
5012: delete $courselogs{$crsid};
5013: }
5014: }
5015: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
5016: 'description' => $coursedescrbuf{$crsid},
5017: 'inst_code' => $courseinstcodebuf{$crsid},
5018: 'type' => $coursetypebuf{$crsid},
5019: 'owner' => $courseownerbuf{$crsid},
5020: };
5021: }
5022: #
5023: # Write course id database (reverse lookup) to homeserver of courses
5024: # Is used in pickcourse
5025: #
5026: foreach my $crs_home (keys(%courseidbuffer)) {
5027: my $response = &courseidput(&host_domain($crs_home),
5028: $courseidbuffer{$crs_home},
5029: $crs_home,'timeonly');
5030: }
5031: #
5032: # File accesses
5033: # Writes to the dynamic metadata of resources to get hit counts, etc.
5034: #
5035: foreach my $entry (keys(%accesshash)) {
5036: if ($entry =~ /___count$/) {
5037: my ($dom,$name);
5038: ($dom,$name,undef)=
5039: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
5040: if (! defined($dom) || $dom eq '' ||
5041: ! defined($name) || $name eq '') {
5042: my $cid = $env{'request.course.id'};
5043: #
5044: # FIXME 11/29/2021
5045: # Typo in rev. 1.458 (2003/12/09)??
5046: # These should likely by $env{'course.'.$cid.'.domain'} and $env{'course.'.$cid.'.num'}
5047: #
5048: # While these ramain as $env{'request.'.$cid.'.domain'} and $env{'request.'.$cid.'.num'}
5049: # $dom and $name will always be null, so the &inc() call will default to storing this data
5050: # in a nohist_accesscount.db file for the user rather than the course.
5051: #
5052: # That said there is a lot of noise in the data being stored.
5053: # So counts for prtspool/ and adm/ etc. are recorded.
5054: #
5055: # A review of which items ending '___count' are written to %accesshash should likely be
5056: # made before deciding whether to set these to 'course.' instead of 'request.'
5057: #
5058: # Under the current scheme each user receives a nohist_accesscount.db file listing
5059: # accesses for things which are not published resources, regardless of course, and
5060: # there is not a nohist_accesscount.db file in a course, which might log accesses from
5061: # anyone in the course for things which are not published resources.
5062: #
5063: # For an author, nohist_accesscount.db ends up having records for other items
5064: # mixed up with the legitimate access counts for the author's published resources.
5065: #
5066: $dom = $env{'request.'.$cid.'.domain'};
5067: $name = $env{'request.'.$cid.'.num'};
5068: }
5069: my $value = $accesshash{$entry};
5070: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
5071: my %temphash=($url => $value);
5072: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
5073: if ($result eq 'ok') {
5074: delete $accesshash{$entry};
5075: }
5076: } else {
5077: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
5078: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
5079: my %temphash=($entry => $accesshash{$entry});
5080: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
5081: delete $accesshash{$entry};
5082: }
5083: }
5084: }
5085: #
5086: # Roles
5087: # Reverse lookup of user roles for course faculty/staff and co-authorship
5088: #
5089: foreach my $entry (keys(%userrolehash)) {
5090: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
5091: split(/\:/,$entry);
5092: if (&Apache::lonnet::put('nohist_userroles',
5093: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
5094: $rudom,$runame) eq 'ok') {
5095: delete $userrolehash{$entry};
5096: }
5097: }
5098: #
5099: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
5100: #
5101: my %domrolebuffer = ();
5102: foreach my $entry (keys(%domainrolehash)) {
5103: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
5104: if ($domrolebuffer{$rudom}) {
5105: $domrolebuffer{$rudom}.='&'.&escape($entry).
5106: '='.&escape($domainrolehash{$entry});
5107: } else {
5108: $domrolebuffer{$rudom}.=&escape($entry).
5109: '='.&escape($domainrolehash{$entry});
5110: }
5111: delete $domainrolehash{$entry};
5112: }
5113: foreach my $dom (keys(%domrolebuffer)) {
5114: my %servers;
5115: if (defined(&domain($dom,'primary'))) {
5116: my $primary=&domain($dom,'primary');
5117: my $hostname=&hostname($primary);
5118: $servers{$primary} = $hostname;
5119: } else {
5120: %servers = &get_servers($dom,'library');
5121: }
5122: foreach my $tryserver (keys(%servers)) {
5123: if (&reply('domroleput:'.$dom.':'.
5124: $domrolebuffer{$dom},$tryserver) eq 'ok') {
5125: last;
5126: } else {
5127: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
5128: }
5129: }
5130: }
5131: $dumpcount++;
5132: }
5133:
5134: sub courselog {
5135: my $what=shift;
5136: $what=time.':'.$what;
5137: unless ($env{'request.course.id'}) { return ''; }
5138: $coursedombuf{$env{'request.course.id'}}=
5139: $env{'course.'.$env{'request.course.id'}.'.domain'};
5140: $coursenumbuf{$env{'request.course.id'}}=
5141: $env{'course.'.$env{'request.course.id'}.'.num'};
5142: $coursehombuf{$env{'request.course.id'}}=
5143: $env{'course.'.$env{'request.course.id'}.'.home'};
5144: $coursedescrbuf{$env{'request.course.id'}}=
5145: $env{'course.'.$env{'request.course.id'}.'.description'};
5146: $courseinstcodebuf{$env{'request.course.id'}}=
5147: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
5148: $courseownerbuf{$env{'request.course.id'}}=
5149: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
5150: $coursetypebuf{$env{'request.course.id'}}=
5151: $env{'course.'.$env{'request.course.id'}.'.type'};
5152: if (defined $courselogs{$env{'request.course.id'}}) {
5153: $courselogs{$env{'request.course.id'}}.='&'.$what;
5154: } else {
5155: $courselogs{$env{'request.course.id'}}.=$what;
5156: }
5157: if (length($courselogs{$env{'request.course.id'}})>4048) {
5158: &flushcourselogs();
5159: }
5160: }
5161:
5162: sub courseacclog {
5163: my $fnsymb=shift;
5164: unless ($env{'request.course.id'}) { return ''; }
5165: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
5166: if ($fnsymb=~/$LONCAPA::assess_re/) {
5167: $what.=':POST';
5168: # FIXME: Probably ought to escape things....
5169: foreach my $key (keys(%env)) {
5170: if ($key=~/^form\.(.*)/) {
5171: my $formitem = $1;
5172: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
5173: $what.=':'.$formitem.'='.$env{$key};
5174: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
5175: if ($formitem eq 'proctorpassword') {
5176: $what.=':'.$formitem.'=' . '*' x length($env{$key});
5177: } else {
5178: $what.=':'.$formitem.'='.$env{$key};
5179: }
5180: }
5181: }
5182: }
5183: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
5184: # FIXME: We should not be depending on a form parameter that someone
5185: # editing lonsearchcat.pm might change in the future.
5186: if ($env{'form.phase'} eq 'course_search') {
5187: $what.= ':POST';
5188: # FIXME: Probably ought to escape things....
5189: foreach my $element ('courseexp','crsfulltext','crsrelated',
5190: 'crsdiscuss') {
5191: $what.=':'.$element.'='.$env{'form.'.$element};
5192: }
5193: }
5194: }
5195: &courselog($what);
5196: }
5197:
5198: sub countacc {
5199: my $url=&declutter(shift);
5200: return if (! defined($url) || $url eq '');
5201: unless ($env{'request.course.id'}) { return ''; }
5202: #
5203: # Mark that this url was used in this course
5204: #
5205: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
5206: #
5207: # Increase the access count for this resource in this child process
5208: #
5209: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
5210: $accesshash{$key}++;
5211: }
5212:
5213: sub linklog {
5214: my ($from,$to)=@_;
5215: $from=&declutter($from);
5216: $to=&declutter($to);
5217: $accesshash{$from.'___'.$to.'___comefrom'}=1;
5218: $accesshash{$to.'___'.$from.'___goto'}=1;
5219: }
5220:
5221: sub statslog {
5222: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
5223: if ($users<2) { return; }
5224: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
5225: 'course' => $env{'request.course.id'},
5226: 'sections' => '"all"',
5227: 'num_students' => $users,
5228: 'part' => $part,
5229: 'symb' => $symb,
5230: 'mean_tries' => $av_attempts,
5231: 'deg_of_diff' => $degdiff});
5232: foreach my $key (keys(%dynstore)) {
5233: $accesshash{$key}=$dynstore{$key};
5234: }
5235: }
5236:
5237: sub userrolelog {
5238: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
5239: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
5240: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5241: $userrolehash
5242: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5243: =$tend.':'.$tstart;
5244: }
5245: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
5246: $userrolehash
5247: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
5248: =$tend.':'.$tstart;
5249: }
5250: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
5251: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5252: $domainrolehash
5253: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5254: = $tend.':'.$tstart;
5255: }
5256: }
5257:
5258: sub courserolelog {
5259: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
5260: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
5261: my $cdom = $1;
5262: my $cnum = $2;
5263: my $sec = $3;
5264: my $namespace = 'rolelog';
5265: my %storehash = (
5266: role => $trole,
5267: start => $tstart,
5268: end => $tend,
5269: selfenroll => $selfenroll,
5270: context => $context,
5271: );
5272: if ($trole eq 'gr') {
5273: $namespace = 'groupslog';
5274: $storehash{'group'} = $sec;
5275: } else {
5276: $storehash{'section'} = $sec;
5277: }
5278: &write_log('course',$namespace,\%storehash,$delflag,$username,
5279: $domain,$cnum,$cdom);
5280: if (($trole ne 'st') || ($sec ne '')) {
5281: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
5282: }
5283: }
5284: return;
5285: }
5286:
5287: sub domainrolelog {
5288: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5289: if ($area =~ m{^/($match_domain)/$}) {
5290: my $cdom = $1;
5291: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
5292: my $namespace = 'rolelog';
5293: my %storehash = (
5294: role => $trole,
5295: start => $tstart,
5296: end => $tend,
5297: context => $context,
5298: );
5299: &write_log('domain',$namespace,\%storehash,$delflag,$username,
5300: $domain,$domconfiguser,$cdom);
5301: }
5302: return;
5303:
5304: }
5305:
5306: sub coauthorrolelog {
5307: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5308: if ($area =~ m{^/($match_domain)/($match_username)$}) {
5309: my $audom = $1;
5310: my $auname = $2;
5311: my $namespace = 'rolelog';
5312: my %storehash = (
5313: role => $trole,
5314: start => $tstart,
5315: end => $tend,
5316: context => $context,
5317: );
5318: &write_log('author',$namespace,\%storehash,$delflag,$username,
5319: $domain,$auname,$audom);
5320: }
5321: return;
5322: }
5323:
5324: sub get_course_adv_roles {
5325: my ($cid,$codes) = @_;
5326: $cid=$env{'request.course.id'} unless (defined($cid));
5327: my %coursehash=&coursedescription($cid);
5328: my $crstype = &Apache::loncommon::course_type($cid);
5329: my %nothide=();
5330: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5331: if ($user !~ /:/) {
5332: $nothide{join(':',split(/[\@]/,$user))}=1;
5333: } else {
5334: $nothide{$user}=1;
5335: }
5336: }
5337: my @possdoms = ($coursehash{'domain'});
5338: if ($coursehash{'checkforpriv'}) {
5339: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5340: }
5341: my %returnhash=();
5342: my %dumphash=
5343: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5344: my $now=time;
5345: my %privileged;
5346: foreach my $entry (keys(%dumphash)) {
5347: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5348: if (($tstart) && ($tstart<0)) { next; }
5349: if (($tend) && ($tend<$now)) { next; }
5350: if (($tstart) && ($now<$tstart)) { next; }
5351: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5352: if ($username eq '' || $domain eq '') { next; }
5353: if ((&privileged($username,$domain,\@possdoms)) &&
5354: (!$nothide{$username.':'.$domain})) { next; }
5355: if ($role eq 'cr') { next; }
5356: if ($codes) {
5357: if ($section) { $role .= ':'.$section; }
5358: if ($returnhash{$role}) {
5359: $returnhash{$role}.=','.$username.':'.$domain;
5360: } else {
5361: $returnhash{$role}=$username.':'.$domain;
5362: }
5363: } else {
5364: my $key=&plaintext($role,$crstype);
5365: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5366: if ($returnhash{$key}) {
5367: $returnhash{$key}.=','.$username.':'.$domain;
5368: } else {
5369: $returnhash{$key}=$username.':'.$domain;
5370: }
5371: }
5372: }
5373: return %returnhash;
5374: }
5375:
5376: sub get_my_roles {
5377: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5378: unless (defined($uname)) { $uname=$env{'user.name'}; }
5379: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5380: my (%dumphash,%nothide);
5381: if ($context eq 'userroles') {
5382: %dumphash = &dump('roles',$udom,$uname);
5383: } else {
5384: %dumphash = &dump('nohist_userroles',$udom,$uname);
5385: if ($hidepriv) {
5386: my %coursehash=&coursedescription($udom.'_'.$uname);
5387: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5388: if ($user !~ /:/) {
5389: $nothide{join(':',split(/[\@]/,$user))} = 1;
5390: } else {
5391: $nothide{$user} = 1;
5392: }
5393: }
5394: }
5395: }
5396: my %returnhash=();
5397: my $now=time;
5398: my %privileged;
5399: foreach my $entry (keys(%dumphash)) {
5400: my ($role,$tend,$tstart);
5401: if ($context eq 'userroles') {
5402: next if ($entry =~ /^rolesdef/);
5403: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5404: } else {
5405: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5406: }
5407: if (($tstart) && ($tstart<0)) { next; }
5408: my $status = 'active';
5409: if (($tend) && ($tend<=$now)) {
5410: $status = 'previous';
5411: }
5412: if (($tstart) && ($now<$tstart)) {
5413: $status = 'future';
5414: }
5415: if (ref($types) eq 'ARRAY') {
5416: if (!grep(/^\Q$status\E$/,@{$types})) {
5417: next;
5418: }
5419: } else {
5420: if ($status ne 'active') {
5421: next;
5422: }
5423: }
5424: my ($rolecode,$username,$domain,$section,$area);
5425: if ($context eq 'userroles') {
5426: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5427: (undef,$domain,$username,$section) = split(/\//,$area);
5428: } else {
5429: ($role,$username,$domain,$section) = split(/\:/,$entry);
5430: }
5431: if (ref($roledoms) eq 'ARRAY') {
5432: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5433: next;
5434: }
5435: }
5436: if (ref($roles) eq 'ARRAY') {
5437: if (!grep(/^\Q$role\E$/,@{$roles})) {
5438: if ($role =~ /^cr\//) {
5439: if (!grep(/^cr$/,@{$roles})) {
5440: next;
5441: }
5442: } elsif ($role =~ /^gr\//) {
5443: if (!grep(/^gr$/,@{$roles})) {
5444: next;
5445: }
5446: } else {
5447: next;
5448: }
5449: }
5450: }
5451: if ($hidepriv) {
5452: my @privroles = ('dc','su');
5453: if ($context eq 'userroles') {
5454: next if (grep(/^\Q$role\E$/,@privroles));
5455: } else {
5456: my $possdoms = [$domain];
5457: if (ref($roledoms) eq 'ARRAY') {
5458: push(@{$possdoms},@{$roledoms});
5459: }
5460: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5461: if (!$nothide{$username.':'.$domain}) {
5462: next;
5463: }
5464: }
5465: }
5466: }
5467: if ($withsec) {
5468: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5469: $tstart.':'.$tend;
5470: } else {
5471: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5472: }
5473: }
5474: return %returnhash;
5475: }
5476:
5477: sub get_all_adhocroles {
5478: my ($dom) = @_;
5479: my @roles_by_num = ();
5480: my %domdefaults = &get_domain_defaults($dom);
5481: my (%description,%access_in_dom,%access_info);
5482: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5483: my $count = 0;
5484: my %domcurrent = %{$domdefaults{'adhocroles'}};
5485: my %ordered;
5486: foreach my $role (sort(keys(%domcurrent))) {
5487: my ($order,$desc,$access_in_dom);
5488: if (ref($domcurrent{$role}) eq 'HASH') {
5489: $order = $domcurrent{$role}{'order'};
5490: $desc = $domcurrent{$role}{'desc'};
5491: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5492: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5493: }
5494: if ($order eq '') {
5495: $order = $count;
5496: }
5497: $ordered{$order} = $role;
5498: if ($desc ne '') {
5499: $description{$role} = $desc;
5500: } else {
5501: $description{$role}= $role;
5502: }
5503: $count++;
5504: }
5505: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5506: push(@roles_by_num,$ordered{$item});
5507: }
5508: }
5509: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5510: }
5511:
5512: sub get_my_adhocroles {
5513: my ($cid,$checkreg) = @_;
5514: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5515: if ($env{'request.course.id'} eq $cid) {
5516: $cdom = $env{'course.'.$cid.'.domain'};
5517: $cnum = $env{'course.'.$cid.'.num'};
5518: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5519: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5520: $cdom = $1;
5521: $cnum = $2;
5522: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
5523: $cdom,$cnum);
5524: }
5525: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5526: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5527: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5528: if ($rosterhash{$user} ne '') {
5529: my $type = (split(/:/,$rosterhash{$user}))[5];
5530: return ([],{}) if ($type eq 'auto');
5531: }
5532: }
5533: if (($cdom ne '') && ($cnum ne '')) {
5534: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5535: my $then=$env{'user.login.time'};
5536: my $update=$env{'user.update.time'};
5537: if (!$update) {
5538: $update = $then;
5539: }
5540: my @liveroles;
5541: foreach my $role ('dh','da') {
5542: if ($env{"user.role.$role./$cdom/"}) {
5543: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5544: my $limit = $update;
5545: if ($env{'request.role'} eq "$role./$cdom/") {
5546: $limit = $then;
5547: }
5548: my $activerole = 1;
5549: if ($tstart && $tstart>$limit) { $activerole = 0; }
5550: if ($tend && $tend <$limit) { $activerole = 0; }
5551: if ($activerole) {
5552: push(@liveroles,$role);
5553: }
5554: }
5555: }
5556: if (@liveroles) {
5557: if (&homeserver($cnum,$cdom) ne 'no_host') {
5558: my ($accessref,$accessinfo,%access_in_dom);
5559: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5560: if (ref($roles_by_num) eq 'ARRAY') {
5561: if (@{$roles_by_num}) {
5562: my %settings;
5563: if ($env{'request.course.id'} eq $cid) {
5564: foreach my $envkey (keys(%env)) {
5565: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5566: $settings{$1} = $env{$envkey};
5567: }
5568: }
5569: } else {
5570: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5571: }
5572: my %setincrs;
5573: if ($settings{'internal.adhocaccess'}) {
5574: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5575: }
5576: my @statuses;
5577: if ($env{'environment.inststatus'}) {
5578: @statuses = split(/,/,$env{'environment.inststatus'});
5579: }
5580: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5581: if (ref($accessref) eq 'HASH') {
5582: %access_in_dom = %{$accessref};
5583: }
5584: foreach my $role (@{$roles_by_num}) {
5585: my ($curraccess,@okstatus,@personnel);
5586: if ($setincrs{$role}) {
5587: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5588: if ($curraccess eq 'status') {
5589: @okstatus = split(/\&/,$rest);
5590: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5591: @personnel = split(/\&/,$rest);
5592: }
5593: } else {
5594: $curraccess = $access_in_dom{$role};
5595: if (ref($accessinfo) eq 'HASH') {
5596: if ($curraccess eq 'status') {
5597: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5598: @okstatus = @{$accessinfo->{$role}};
5599: }
5600: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5601: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5602: @personnel = @{$accessinfo->{$role}};
5603: }
5604: }
5605: }
5606: }
5607: if ($curraccess eq 'none') {
5608: next;
5609: } elsif ($curraccess eq 'all') {
5610: push(@possroles,$role);
5611: } elsif ($curraccess eq 'dh') {
5612: if (grep(/^dh$/,@liveroles)) {
5613: push(@possroles,$role);
5614: } else {
5615: next;
5616: }
5617: } elsif ($curraccess eq 'da') {
5618: if (grep(/^da$/,@liveroles)) {
5619: push(@possroles,$role);
5620: } else {
5621: next;
5622: }
5623: } elsif ($curraccess eq 'status') {
5624: if (@okstatus) {
5625: if (!@statuses) {
5626: if (grep(/^default$/,@okstatus)) {
5627: push(@possroles,$role);
5628: }
5629: } else {
5630: foreach my $status (@okstatus) {
5631: if (grep(/^\Q$status\E$/,@statuses)) {
5632: push(@possroles,$role);
5633: last;
5634: }
5635: }
5636: }
5637: }
5638: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5639: if (grep(/^\Q$user\E$/,@personnel)) {
5640: if ($curraccess eq 'exc') {
5641: push(@possroles,$role);
5642: }
5643: } elsif ($curraccess eq 'inc') {
5644: push(@possroles,$role);
5645: }
5646: }
5647: }
5648: }
5649: }
5650: }
5651: }
5652: }
5653: }
5654: unless (ref($description) eq 'HASH') {
5655: if (ref($roles_by_num) eq 'ARRAY') {
5656: my %desc;
5657: map { $desc{$_} = $_; } (@{$roles_by_num});
5658: $description = \%desc;
5659: } else {
5660: $description = {};
5661: }
5662: }
5663: return (\@possroles,$description);
5664: }
5665:
5666: # ----------------------------------------------------- Frontpage Announcements
5667: #
5668: #
5669:
5670: sub postannounce {
5671: my ($server,$text)=@_;
5672: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5673: unless ($text=~/\w/) { $text=''; }
5674: return &reply('setannounce:'.&escape($text),$server);
5675: }
5676:
5677: sub getannounce {
5678:
5679: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5680: my $announcement='';
5681: while (my $line = <$fh>) { $announcement .= $line; }
5682: close($fh);
5683: if ($announcement=~/\w/) {
5684: return
5685: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5686: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5687: } else {
5688: return '';
5689: }
5690: } else {
5691: return '';
5692: }
5693: }
5694:
5695: # ---------------------------------------------------------- Course ID routines
5696: # Deal with domain's nohist_courseid.db files
5697: #
5698:
5699: sub courseidput {
5700: my ($domain,$storehash,$coursehome,$caller) = @_;
5701: return unless (ref($storehash) eq 'HASH');
5702: my $outcome;
5703: if ($caller eq 'timeonly') {
5704: my $cids = '';
5705: foreach my $item (keys(%$storehash)) {
5706: $cids.=&escape($item).'&';
5707: }
5708: $cids=~s/\&$//;
5709: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5710: $coursehome);
5711: } else {
5712: my $items = '';
5713: foreach my $item (keys(%$storehash)) {
5714: $items.= &escape($item).'='.
5715: &freeze_escape($$storehash{$item}).'&';
5716: }
5717: $items=~s/\&$//;
5718: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5719: $coursehome);
5720: }
5721: if ($outcome eq 'unknown_cmd') {
5722: my $what;
5723: foreach my $cid (keys(%$storehash)) {
5724: $what .= &escape($cid).'=';
5725: foreach my $item ('description','inst_code','owner','type') {
5726: $what .= &escape($storehash->{$cid}{$item}).':';
5727: }
5728: $what =~ s/\:$/&/;
5729: }
5730: $what =~ s/\&$//;
5731: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5732: } else {
5733: return $outcome;
5734: }
5735: }
5736:
5737: sub courseiddump {
5738: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5739: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5740: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5741: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5742: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5743: my $as_hash = 1;
5744: my %returnhash;
5745: if (!$domfilter) { $domfilter=''; }
5746: my %libserv = &all_library();
5747: foreach my $tryserver (keys(%libserv)) {
5748: if ( ( $hostidflag == 1
5749: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5750: || (!defined($hostidflag)) ) {
5751:
5752: if (($domfilter eq '') ||
5753: (&host_domain($tryserver) eq $domfilter)) {
5754: my $rep;
5755: if (grep { $_ eq $tryserver } current_machine_ids()) {
5756: $rep = LONCAPA::Lond::dump_course_id_handler(
5757: join(":", (&host_domain($tryserver), $sincefilter,
5758: &escape($descfilter), &escape($instcodefilter),
5759: &escape($ownerfilter), &escape($coursefilter),
5760: &escape($typefilter), &escape($regexp_ok),
5761: $as_hash, &escape($selfenrollonly),
5762: &escape($catfilter), $showhidden, $caller,
5763: &escape($cloner), &escape($cc_clone), $cloneonly,
5764: &escape($createdbefore), &escape($createdafter),
5765: &escape($creationcontext),$domcloner,$hasuniquecode,
5766: $reqcrsdom,&escape($reqinstcode))));
5767: } else {
5768: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5769: $sincefilter.':'.&escape($descfilter).':'.
5770: &escape($instcodefilter).':'.&escape($ownerfilter).
5771: ':'.&escape($coursefilter).':'.&escape($typefilter).
5772: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5773: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5774: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5775: &escape($cc_clone).':'.$cloneonly.':'.
5776: &escape($createdbefore).':'.&escape($createdafter).':'.
5777: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5778: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5779: }
5780:
5781: my @pairs=split(/\&/,$rep);
5782: foreach my $item (@pairs) {
5783: my ($key,$value)=split(/\=/,$item,2);
5784: $key = &unescape($key);
5785: next if ($key =~ /^error: 2 /);
5786: my $result = &thaw_unescape($value);
5787: if (ref($result) eq 'HASH') {
5788: $returnhash{$key}=$result;
5789: } else {
5790: my @responses = split(/:/,$value);
5791: my @items = ('description','inst_code','owner','type');
5792: for (my $i=0; $i<@responses; $i++) {
5793: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5794: }
5795: }
5796: }
5797: }
5798: }
5799: }
5800: return %returnhash;
5801: }
5802:
5803: sub courselastaccess {
5804: my ($cdom,$cnum,$hostidref) = @_;
5805: my %returnhash;
5806: if ($cdom && $cnum) {
5807: my $chome = &homeserver($cnum,$cdom);
5808: if ($chome ne 'no_host') {
5809: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5810: &extract_lastaccess(\%returnhash,$rep);
5811: }
5812: } else {
5813: if (!$cdom) { $cdom=''; }
5814: my %libserv = &all_library();
5815: foreach my $tryserver (keys(%libserv)) {
5816: if (ref($hostidref) eq 'ARRAY') {
5817: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5818: }
5819: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5820: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5821: &extract_lastaccess(\%returnhash,$rep);
5822: }
5823: }
5824: }
5825: return %returnhash;
5826: }
5827:
5828: sub extract_lastaccess {
5829: my ($returnhash,$rep) = @_;
5830: if (ref($returnhash) eq 'HASH') {
5831: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5832: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5833: $rep eq '') {
5834: my @pairs=split(/\&/,$rep);
5835: foreach my $item (@pairs) {
5836: my ($key,$value)=split(/\=/,$item,2);
5837: $key = &unescape($key);
5838: next if ($key =~ /^error: 2 /);
5839: $returnhash->{$key} = &thaw_unescape($value);
5840: }
5841: }
5842: }
5843: return;
5844: }
5845:
5846: # ---------------------------------------------------------- DC e-mail
5847:
5848: sub dcmailput {
5849: my ($domain,$msgid,$message,$server)=@_;
5850: my $status = &Apache::lonnet::critical(
5851: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5852: &escape($message),$server);
5853: return $status;
5854: }
5855:
5856: sub dcmaildump {
5857: my ($dom,$startdate,$enddate,$senders) = @_;
5858: my %returnhash=();
5859:
5860: if (defined(&domain($dom,'primary'))) {
5861: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5862: &escape($enddate).':';
5863: my @esc_senders=map { &escape($_)} @$senders;
5864: $cmd.=&escape(join('&',@esc_senders));
5865: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5866: my ($key,$value) = split(/\=/,$line,2);
5867: if (($key) && ($value)) {
5868: $returnhash{&unescape($key)} = &unescape($value);
5869: }
5870: }
5871: }
5872: return %returnhash;
5873: }
5874: # ---------------------------------------------------------- Domain roles
5875:
5876: sub get_domain_roles {
5877: my ($dom,$roles,$startdate,$enddate)=@_;
5878: if ((!defined($startdate)) || ($startdate eq '')) {
5879: $startdate = '.';
5880: }
5881: if ((!defined($enddate)) || ($enddate eq '')) {
5882: $enddate = '.';
5883: }
5884: my $rolelist;
5885: if (ref($roles) eq 'ARRAY') {
5886: $rolelist = join('&',@{$roles});
5887: }
5888: my %personnel = ();
5889:
5890: my %servers = &get_servers($dom,'library');
5891: foreach my $tryserver (keys(%servers)) {
5892: %{$personnel{$tryserver}}=();
5893: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5894: &escape($startdate).':'.
5895: &escape($enddate).':'.
5896: &escape($rolelist), $tryserver))) {
5897: my ($key,$value) = split(/\=/,$line,2);
5898: if (($key) && ($value)) {
5899: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5900: }
5901: }
5902: }
5903: return %personnel;
5904: }
5905:
5906: sub get_active_domroles {
5907: my ($dom,$roles) = @_;
5908: return () unless (ref($roles) eq 'ARRAY');
5909: my $now = time;
5910: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5911: my %domroles;
5912: foreach my $server (keys(%dompersonnel)) {
5913: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5914: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5915: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5916: }
5917: }
5918: return %domroles;
5919: }
5920:
5921: # ----------------------------------------------------------- Interval timing
5922:
5923: {
5924: # Caches needed for speedup of navmaps
5925: # We don't want to cache this for very long at all (5 seconds at most)
5926: #
5927: # The user for whom we cache
5928: my $cachedkey='';
5929: # The cached times for this user
5930: my %cachedtimes=();
5931: # When this was last done
5932: my $cachedtime='';
5933:
5934: sub load_all_first_access {
5935: my ($uname,$udom,$ignorecache)=@_;
5936: if (($cachedkey eq $uname.':'.$udom) &&
5937: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5938: (!$ignorecache)) {
5939: return;
5940: }
5941: $cachedtime=time;
5942: $cachedkey=$uname.':'.$udom;
5943: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5944: }
5945:
5946: sub get_first_access {
5947: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5948: my ($symb,$courseid,$udom,$uname)=&whichuser();
5949: if ($argsymb) { $symb=$argsymb; }
5950: my ($map,$id,$res)=&decode_symb($symb);
5951: if ($argmap) { $map = $argmap; }
5952: if ($type eq 'course') {
5953: $res='course';
5954: } elsif ($type eq 'map') {
5955: $res=&symbread($map);
5956: } else {
5957: $res=$symb;
5958: }
5959: &load_all_first_access($uname,$udom,$ignorecache);
5960: return $cachedtimes{"$courseid\0$res"};
5961: }
5962:
5963: sub set_first_access {
5964: my ($type,$interval)=@_;
5965: my ($symb,$courseid,$udom,$uname)=&whichuser();
5966: my ($map,$id,$res)=&decode_symb($symb);
5967: if ($type eq 'course') {
5968: $res='course';
5969: } elsif ($type eq 'map') {
5970: $res=&symbread($map);
5971: } else {
5972: $res=$symb;
5973: }
5974: $cachedkey='';
5975: my $firstaccess=&get_first_access($type,$symb,$map);
5976: if ($firstaccess) {
5977: &logthis("First access time already set ($firstaccess) when attempting ".
5978: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5979: "in $courseid");
5980: return 'already_set';
5981: } else {
5982: my $start = time;
5983: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5984: $udom,$uname);
5985: if ($putres eq 'ok') {
5986: &put('timerinterval',{"$courseid\0$res"=>$interval},
5987: $udom,$uname);
5988: &appenv(
5989: {
5990: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5991: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5992: }
5993: );
5994: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5995: $cachedtimes{"$courseid\0$res"} = $start;
5996: }
5997: } elsif ($putres ne 'refused') {
5998: &logthis("Result: $putres when attempting to set first access time ".
5999: "(type: $type, extent: $res) for $uname:$udom in $courseid");
6000: }
6001: return $putres;
6002: }
6003: return 'already_set';
6004: }
6005: }
6006:
6007: # --------------------------------------------- Set Expire Date for Spreadsheet
6008:
6009: sub expirespread {
6010: my ($uname,$udom,$stype,$usymb)=@_;
6011: my $cid=$env{'request.course.id'};
6012: if ($cid) {
6013: my $now=time;
6014: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
6015: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
6016: $env{'course.'.$cid.'.num'}.
6017: ':nohist_expirationdates:'.
6018: &escape($key).'='.$now,
6019: $env{'course.'.$cid.'.home'})
6020: }
6021: return 'ok';
6022: }
6023:
6024: # ----------------------------------------------------- Devalidate Spreadsheets
6025:
6026: sub devalidate {
6027: my ($symb,$uname,$udom)=@_;
6028: my $cid=$env{'request.course.id'};
6029: if ($cid) {
6030: # delete the stored spreadsheets for
6031: # - the student level sheet of this user in course's homespace
6032: # - the assessment level sheet for this resource
6033: # for this user in user's homespace
6034: # - current conditional state info
6035: my $key=$uname.':'.$udom.':';
6036: my $status=
6037: &del('nohist_calculatedsheets',
6038: [$key.'studentcalc:'],
6039: $env{'course.'.$cid.'.domain'},
6040: $env{'course.'.$cid.'.num'})
6041: .' '.
6042: &del('nohist_calculatedsheets_'.$cid,
6043: [$key.'assesscalc:'.$symb],$udom,$uname);
6044: unless ($status eq 'ok ok') {
6045: &logthis('Could not devalidate spreadsheet '.
6046: $uname.' at '.$udom.' for '.
6047: $symb.': '.$status);
6048: }
6049: &delenv('user.state.'.$cid);
6050: }
6051: }
6052:
6053: sub get_scalar {
6054: my ($string,$end) = @_;
6055: my $value;
6056: if ($$string =~ s/^([^&]*?)($end)/$2/) {
6057: $value = $1;
6058: } elsif ($$string =~ s/^([^&]*?)&//) {
6059: $value = $1;
6060: }
6061: return &unescape($value);
6062: }
6063:
6064: sub array2str {
6065: my (@array) = @_;
6066: my $result=&arrayref2str(\@array);
6067: $result=~s/^__ARRAY_REF__//;
6068: $result=~s/__END_ARRAY_REF__$//;
6069: return $result;
6070: }
6071:
6072: sub arrayref2str {
6073: my ($arrayref) = @_;
6074: my $result='__ARRAY_REF__';
6075: foreach my $elem (@$arrayref) {
6076: if(ref($elem) eq 'ARRAY') {
6077: $result.=&arrayref2str($elem).'&';
6078: } elsif(ref($elem) eq 'HASH') {
6079: $result.=&hashref2str($elem).'&';
6080: } elsif(ref($elem)) {
6081: #print("Got a ref of ".(ref($elem))." skipping.");
6082: } else {
6083: $result.=&escape($elem).'&';
6084: }
6085: }
6086: $result=~s/\&$//;
6087: $result .= '__END_ARRAY_REF__';
6088: return $result;
6089: }
6090:
6091: sub hash2str {
6092: my (%hash) = @_;
6093: my $result=&hashref2str(\%hash);
6094: $result=~s/^__HASH_REF__//;
6095: $result=~s/__END_HASH_REF__$//;
6096: return $result;
6097: }
6098:
6099: sub hashref2str {
6100: my ($hashref)=@_;
6101: my $result='__HASH_REF__';
6102: foreach my $key (sort(keys(%$hashref))) {
6103: if (ref($key) eq 'ARRAY') {
6104: $result.=&arrayref2str($key).'=';
6105: } elsif (ref($key) eq 'HASH') {
6106: $result.=&hashref2str($key).'=';
6107: } elsif (ref($key)) {
6108: $result.='=';
6109: #print("Got a ref of ".(ref($key))." skipping.");
6110: } else {
6111: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
6112: }
6113:
6114: if(ref($hashref->{$key}) eq 'ARRAY') {
6115: $result.=&arrayref2str($hashref->{$key}).'&';
6116: } elsif(ref($hashref->{$key}) eq 'HASH') {
6117: $result.=&hashref2str($hashref->{$key}).'&';
6118: } elsif(ref($hashref->{$key})) {
6119: $result.='&';
6120: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
6121: } else {
6122: $result.=&escape($hashref->{$key}).'&';
6123: }
6124: }
6125: $result=~s/\&$//;
6126: $result .= '__END_HASH_REF__';
6127: return $result;
6128: }
6129:
6130: sub str2hash {
6131: my ($string)=@_;
6132: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
6133: return %$hash;
6134: }
6135:
6136: sub str2hashref {
6137: my ($string) = @_;
6138:
6139: my %hash;
6140:
6141: if($string !~ /^__HASH_REF__/) {
6142: if (! ($string eq '' || !defined($string))) {
6143: $hash{'error'}='Not hash reference';
6144: }
6145: return (\%hash, $string);
6146: }
6147:
6148: $string =~ s/^__HASH_REF__//;
6149:
6150: while($string !~ /^__END_HASH_REF__/) {
6151: #key
6152: my $key='';
6153: if($string =~ /^__HASH_REF__/) {
6154: ($key, $string)=&str2hashref($string);
6155: if(defined($key->{'error'})) {
6156: $hash{'error'}='Bad data';
6157: return (\%hash, $string);
6158: }
6159: } elsif($string =~ /^__ARRAY_REF__/) {
6160: ($key, $string)=&str2arrayref($string);
6161: if($key->[0] eq 'Array reference error') {
6162: $hash{'error'}='Bad data';
6163: return (\%hash, $string);
6164: }
6165: } else {
6166: $string =~ s/^(.*?)=//;
6167: $key=&unescape($1);
6168: }
6169: $string =~ s/^=//;
6170:
6171: #value
6172: my $value='';
6173: if($string =~ /^__HASH_REF__/) {
6174: ($value, $string)=&str2hashref($string);
6175: if(defined($value->{'error'})) {
6176: $hash{'error'}='Bad data';
6177: return (\%hash, $string);
6178: }
6179: } elsif($string =~ /^__ARRAY_REF__/) {
6180: ($value, $string)=&str2arrayref($string);
6181: if($value->[0] eq 'Array reference error') {
6182: $hash{'error'}='Bad data';
6183: return (\%hash, $string);
6184: }
6185: } else {
6186: $value=&get_scalar(\$string,'__END_HASH_REF__');
6187: }
6188: $string =~ s/^&//;
6189:
6190: $hash{$key}=$value;
6191: }
6192:
6193: $string =~ s/^__END_HASH_REF__//;
6194:
6195: return (\%hash, $string);
6196: }
6197:
6198: sub str2array {
6199: my ($string)=@_;
6200: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
6201: return @$array;
6202: }
6203:
6204: sub str2arrayref {
6205: my ($string) = @_;
6206: my @array;
6207:
6208: if($string !~ /^__ARRAY_REF__/) {
6209: if (! ($string eq '' || !defined($string))) {
6210: $array[0]='Array reference error';
6211: }
6212: return (\@array, $string);
6213: }
6214:
6215: $string =~ s/^__ARRAY_REF__//;
6216:
6217: while($string !~ /^__END_ARRAY_REF__/) {
6218: my $value='';
6219: if($string =~ /^__HASH_REF__/) {
6220: ($value, $string)=&str2hashref($string);
6221: if(defined($value->{'error'})) {
6222: $array[0] ='Array reference error';
6223: return (\@array, $string);
6224: }
6225: } elsif($string =~ /^__ARRAY_REF__/) {
6226: ($value, $string)=&str2arrayref($string);
6227: if($value->[0] eq 'Array reference error') {
6228: $array[0] ='Array reference error';
6229: return (\@array, $string);
6230: }
6231: } else {
6232: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
6233: }
6234: $string =~ s/^&//;
6235:
6236: push(@array, $value);
6237: }
6238:
6239: $string =~ s/^__END_ARRAY_REF__//;
6240:
6241: return (\@array, $string);
6242: }
6243:
6244: # -------------------------------------------------------------------Temp Store
6245:
6246: sub tmpreset {
6247: my ($symb,$namespace,$domain,$stuname) = @_;
6248: if (!$symb) {
6249: $symb=&symbread();
6250: if (!$symb) { $symb= $env{'request.url'}; }
6251: }
6252: $symb=escape($symb);
6253:
6254: if (!$namespace) { $namespace=$env{'request.state'}; }
6255: $namespace=~s/\//\_/g;
6256: $namespace=~s/\W//g;
6257:
6258: if (!$domain) { $domain=$env{'user.domain'}; }
6259: if (!$stuname) { $stuname=$env{'user.name'}; }
6260: if ($domain eq 'public' && $stuname eq 'public') {
6261: $stuname=&get_requestor_ip();
6262: }
6263: my $path=LONCAPA::tempdir();
6264: my %hash;
6265: if (tie(%hash,'GDBM_File',
6266: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6267: &GDBM_WRCREAT(),0640)) {
6268: foreach my $key (keys(%hash)) {
6269: if ($key=~ /:$symb/) {
6270: delete($hash{$key});
6271: }
6272: }
6273: }
6274: }
6275:
6276: sub tmpstore {
6277: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
6278:
6279: if (!$symb) {
6280: $symb=&symbread();
6281: if (!$symb) { $symb= $env{'request.url'}; }
6282: }
6283: $symb=escape($symb);
6284:
6285: if (!$namespace) {
6286: # I don't think we would ever want to store this for a course.
6287: # it seems this will only be used if we don't have a course.
6288: #$namespace=$env{'request.course.id'};
6289: #if (!$namespace) {
6290: $namespace=$env{'request.state'};
6291: #}
6292: }
6293: $namespace=~s/\//\_/g;
6294: $namespace=~s/\W//g;
6295: if (!$domain) { $domain=$env{'user.domain'}; }
6296: if (!$stuname) { $stuname=$env{'user.name'}; }
6297: if ($domain eq 'public' && $stuname eq 'public') {
6298: $stuname=&get_requestor_ip();
6299: }
6300: my $now=time;
6301: my %hash;
6302: my $path=LONCAPA::tempdir();
6303: if (tie(%hash,'GDBM_File',
6304: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6305: &GDBM_WRCREAT(),0640)) {
6306: $hash{"version:$symb"}++;
6307: my $version=$hash{"version:$symb"};
6308: my $allkeys='';
6309: foreach my $key (keys(%$storehash)) {
6310: $allkeys.=$key.':';
6311: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
6312: }
6313: $hash{"$version:$symb:timestamp"}=$now;
6314: $allkeys.='timestamp';
6315: $hash{"$version:keys:$symb"}=$allkeys;
6316: if (untie(%hash)) {
6317: return 'ok';
6318: } else {
6319: return "error:$!";
6320: }
6321: } else {
6322: return "error:$!";
6323: }
6324: }
6325:
6326: # -----------------------------------------------------------------Temp Restore
6327:
6328: sub tmprestore {
6329: my ($symb,$namespace,$domain,$stuname) = @_;
6330:
6331: if (!$symb) {
6332: $symb=&symbread();
6333: if (!$symb) { $symb= $env{'request.url'}; }
6334: }
6335: $symb=escape($symb);
6336:
6337: if (!$namespace) { $namespace=$env{'request.state'}; }
6338:
6339: if (!$domain) { $domain=$env{'user.domain'}; }
6340: if (!$stuname) { $stuname=$env{'user.name'}; }
6341: if ($domain eq 'public' && $stuname eq 'public') {
6342: $stuname=&get_requestor_ip();
6343: }
6344: my %returnhash;
6345: $namespace=~s/\//\_/g;
6346: $namespace=~s/\W//g;
6347: my %hash;
6348: my $path=LONCAPA::tempdir();
6349: if (tie(%hash,'GDBM_File',
6350: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6351: &GDBM_READER(),0640)) {
6352: my $version=$hash{"version:$symb"};
6353: $returnhash{'version'}=$version;
6354: my $scope;
6355: for ($scope=1;$scope<=$version;$scope++) {
6356: my $vkeys=$hash{"$scope:keys:$symb"};
6357: my @keys=split(/:/,$vkeys);
6358: my $key;
6359: $returnhash{"$scope:keys"}=$vkeys;
6360: foreach $key (@keys) {
6361: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6362: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6363: }
6364: }
6365: if (!(untie(%hash))) {
6366: return "error:$!";
6367: }
6368: } else {
6369: return "error:$!";
6370: }
6371: return %returnhash;
6372: }
6373:
6374: # ----------------------------------------------------------------------- Store
6375:
6376: sub store {
6377: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6378: my $home='';
6379:
6380: if ($stuname) { $home=&homeserver($stuname,$domain); }
6381:
6382: $symb=&symbclean($symb);
6383: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6384:
6385: if (!$domain) { $domain=$env{'user.domain'}; }
6386: if (!$stuname) { $stuname=$env{'user.name'}; }
6387:
6388: &devalidate($symb,$stuname,$domain);
6389:
6390: $symb=escape($symb);
6391: if (!$namespace) {
6392: unless ($namespace=$env{'request.course.id'}) {
6393: return '';
6394: }
6395: }
6396: if (!$home) { $home=$env{'user.home'}; }
6397:
6398: $$storehash{'ip'}=&get_requestor_ip();
6399: $$storehash{'host'}=$perlvar{'lonHostID'};
6400:
6401: my $namevalue='';
6402: foreach my $key (keys(%$storehash)) {
6403: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6404: }
6405: $namevalue=~s/\&$//;
6406: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6407: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6408: }
6409:
6410: # -------------------------------------------------------------- Critical Store
6411:
6412: sub cstore {
6413: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6414: my $home='';
6415:
6416: if ($stuname) { $home=&homeserver($stuname,$domain); }
6417:
6418: $symb=&symbclean($symb);
6419: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6420:
6421: if (!$domain) { $domain=$env{'user.domain'}; }
6422: if (!$stuname) { $stuname=$env{'user.name'}; }
6423:
6424: &devalidate($symb,$stuname,$domain);
6425:
6426: $symb=escape($symb);
6427: if (!$namespace) {
6428: unless ($namespace=$env{'request.course.id'}) {
6429: return '';
6430: }
6431: }
6432: if (!$home) { $home=$env{'user.home'}; }
6433:
6434: $$storehash{'ip'}=&get_requestor_ip();
6435: $$storehash{'host'}=$perlvar{'lonHostID'};
6436:
6437: my $namevalue='';
6438: foreach my $key (keys(%$storehash)) {
6439: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6440: }
6441: $namevalue=~s/\&$//;
6442: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6443: return critical
6444: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6445: }
6446:
6447: # --------------------------------------------------------------------- Restore
6448:
6449: sub restore {
6450: my ($symb,$namespace,$domain,$stuname) = @_;
6451: my $home='';
6452:
6453: if ($stuname) { $home=&homeserver($stuname,$domain); }
6454:
6455: if (!$symb) {
6456: return if ($namespace eq 'courserequests');
6457: unless ($symb=escape(&symbread())) { return ''; }
6458: } else {
6459: unless ($namespace eq 'courserequests') {
6460: $symb=&escape(&symbclean($symb));
6461: }
6462: }
6463: if (!$namespace) {
6464: unless ($namespace=$env{'request.course.id'}) {
6465: return '';
6466: }
6467: }
6468: if (!$domain) { $domain=$env{'user.domain'}; }
6469: if (!$stuname) { $stuname=$env{'user.name'}; }
6470: if (!$home) { $home=$env{'user.home'}; }
6471: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6472:
6473: my %returnhash=();
6474: foreach my $line (split(/\&/,$answer)) {
6475: my ($name,$value)=split(/\=/,$line);
6476: $returnhash{&unescape($name)}=&thaw_unescape($value);
6477: }
6478: my $version;
6479: for ($version=1;$version<=$returnhash{'version'};$version++) {
6480: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6481: $returnhash{$item}=$returnhash{$version.':'.$item};
6482: }
6483: }
6484: return %returnhash;
6485: }
6486:
6487: # ---------------------------------------------------------- Course Description
6488: #
6489: #
6490:
6491: sub coursedescription {
6492: my ($courseid,$args)=@_;
6493: $courseid=~s/^\///;
6494: $courseid=~s/\_/\//g;
6495: my ($cdomain,$cnum)=split(/\//,$courseid);
6496: my $chome=&homeserver($cnum,$cdomain);
6497: my $normalid=$cdomain.'_'.$cnum;
6498: # need to always cache even if we get errors otherwise we keep
6499: # trying and trying and trying to get the course description.
6500: my %envhash=();
6501: my %returnhash=();
6502:
6503: my $expiretime=600;
6504: if ($env{'request.course.id'} eq $normalid) {
6505: $expiretime=120;
6506: }
6507:
6508: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6509: if (!$args->{'freshen_cache'}
6510: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6511: foreach my $key (keys(%env)) {
6512: next if ($key !~ /^\Q$prefix\E(.*)/);
6513: my ($setting) = $1;
6514: $returnhash{$setting} = $env{$key};
6515: }
6516: return %returnhash;
6517: }
6518:
6519: # get the data again
6520:
6521: if (!$args->{'one_time'}) {
6522: $envhash{'course.'.$normalid.'.last_cache'}=time;
6523: }
6524:
6525: if ($chome ne 'no_host') {
6526: %returnhash=&dump('environment',$cdomain,$cnum);
6527: if (!exists($returnhash{'con_lost'})) {
6528: my $username = $env{'user.name'}; # Defult username
6529: if(defined $args->{'user'}) {
6530: $username = $args->{'user'};
6531: }
6532: $returnhash{'home'}= $chome;
6533: $returnhash{'domain'} = $cdomain;
6534: $returnhash{'num'} = $cnum;
6535: if (!defined($returnhash{'type'})) {
6536: $returnhash{'type'} = 'Course';
6537: }
6538: while (my ($name,$value) = each %returnhash) {
6539: $envhash{'course.'.$normalid.'.'.$name}=$value;
6540: }
6541: $returnhash{'url'}=&clutter($returnhash{'url'});
6542: $returnhash{'fn'}=LONCAPA::tempdir() .
6543: $username.'_'.$cdomain.'_'.$cnum;
6544: $envhash{'course.'.$normalid.'.home'}=$chome;
6545: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6546: $envhash{'course.'.$normalid.'.num'}=$cnum;
6547: }
6548: }
6549: if (!$args->{'one_time'}) {
6550: &appenv(\%envhash);
6551: }
6552: return %returnhash;
6553: }
6554:
6555: sub update_released_required {
6556: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6557: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6558: $cid = $env{'request.course.id'};
6559: $cdom = $env{'course.'.$cid.'.domain'};
6560: $cnum = $env{'course.'.$cid.'.num'};
6561: $chome = $env{'course.'.$cid.'.home'};
6562: }
6563: if ($needsrelease) {
6564: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6565: my $needsupdate;
6566: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6567: $needsupdate = 1;
6568: } else {
6569: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6570: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6571: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6572: $needsupdate = 1;
6573: }
6574: }
6575: if ($needsupdate) {
6576: my %needshash = (
6577: 'internal.releaserequired' => $needsrelease,
6578: );
6579: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6580: if ($putresult eq 'ok') {
6581: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6582: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6583: if (ref($crsinfo{$cid}) eq 'HASH') {
6584: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6585: &courseidput($cdom,\%crsinfo,$chome,'notime');
6586: }
6587: }
6588: }
6589: }
6590: return;
6591: }
6592:
6593: # -------------------------------------------------See if a user is privileged
6594:
6595: sub privileged {
6596: my ($username,$domain,$possdomains,$possroles)=@_;
6597: my $now = time;
6598: my $roles;
6599: if (ref($possroles) eq 'ARRAY') {
6600: $roles = $possroles;
6601: } else {
6602: $roles = ['dc','su'];
6603: }
6604: if (ref($possdomains) eq 'ARRAY') {
6605: my %privileged = &privileged_by_domain($possdomains,$roles);
6606: foreach my $dom (@{$possdomains}) {
6607: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6608: (ref($privileged{$dom}) eq 'HASH')) {
6609: foreach my $role (@{$roles}) {
6610: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6611: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6612: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6613: return 1 unless (($end && $end < $now) ||
6614: ($start && $start > $now));
6615: }
6616: }
6617: }
6618: }
6619: }
6620: } else {
6621: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6622: my $now = time;
6623:
6624: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6625: my ($trole, $tend, $tstart) = split(/_/, $role);
6626: if (grep(/^\Q$trole\E$/,@{$roles})) {
6627: return 1 unless ($tend && $tend < $now)
6628: or ($tstart && $tstart > $now);
6629: }
6630: }
6631: }
6632: return 0;
6633: }
6634:
6635: sub privileged_by_domain {
6636: my ($domains,$roles) = @_;
6637: my %privileged = ();
6638: my $cachetime = 60*60*24;
6639: my $now = time;
6640: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6641: return %privileged;
6642: }
6643: foreach my $dom (@{$domains}) {
6644: next if (ref($privileged{$dom}) eq 'HASH');
6645: my $needroles;
6646: foreach my $role (@{$roles}) {
6647: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6648: if (defined($cached)) {
6649: if (ref($result) eq 'HASH') {
6650: $privileged{$dom}{$role} = $result;
6651: }
6652: } else {
6653: $needroles = 1;
6654: }
6655: }
6656: if ($needroles) {
6657: my %dompersonnel = &get_domain_roles($dom,$roles);
6658: $privileged{$dom} = {};
6659: foreach my $server (keys(%dompersonnel)) {
6660: if (ref($dompersonnel{$server}) eq 'HASH') {
6661: foreach my $item (keys(%{$dompersonnel{$server}})) {
6662: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6663: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6664: next if ($end && $end < $now);
6665: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6666: $dompersonnel{$server}{$item};
6667: }
6668: }
6669: }
6670: if (ref($privileged{$dom}) eq 'HASH') {
6671: foreach my $role (@{$roles}) {
6672: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6673: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6674: } else {
6675: my %hash = ();
6676: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6677: }
6678: }
6679: }
6680: }
6681: }
6682: return %privileged;
6683: }
6684:
6685: # -------------------------------------------------------- Get user privileges
6686:
6687: sub rolesinit {
6688: my ($domain, $username) = @_;
6689: my %userroles = ('user.login.time' => time);
6690: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6691:
6692: # firstaccess and timerinterval are related to timed maps/resources.
6693: # also, blocking can be triggered by an activating timer
6694: # it's saved in the user's %env.
6695: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6696: my %timerinterval = &dump('timerinterval', $domain, $username);
6697: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6698: %timerintchk, %timerintenv);
6699:
6700: foreach my $key (keys(%firstaccess)) {
6701: my ($cid, $rest) = split(/\0/, $key);
6702: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6703: }
6704:
6705: foreach my $key (keys(%timerinterval)) {
6706: my ($cid,$rest) = split(/\0/,$key);
6707: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6708: }
6709:
6710: my %allroles=();
6711: my %allgroups=();
6712:
6713: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6714: my $role = $rolesdump{$area};
6715: $area =~ s/\_\w\w$//;
6716:
6717: my ($trole, $tend, $tstart, $group_privs);
6718:
6719: if ($role =~ /^cr/) {
6720: # Custom role, defined by a user
6721: # e.g., user.role.cr/msu/smith/mynewrole
6722: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6723: $trole = $1;
6724: ($tend, $tstart) = split('_', $2);
6725: } else {
6726: $trole = $role;
6727: }
6728: } elsif ($role =~ m|^gr/|) {
6729: # Role of member in a group, defined within a course/community
6730: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6731: ($trole, $tend, $tstart) = split(/_/, $role);
6732: next if $tstart eq '-1';
6733: ($trole, $group_privs) = split(/\//, $trole);
6734: $group_privs = &unescape($group_privs);
6735: } else {
6736: # Just a normal role, defined in roles.tab
6737: ($trole, $tend, $tstart) = split(/_/,$role);
6738: }
6739:
6740: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6741: $username);
6742: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6743:
6744: # role expired or not available yet?
6745: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6746: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6747:
6748: next if $area eq '' or $trole eq '';
6749:
6750: my $spec = "$trole.$area";
6751: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6752:
6753: if ($trole =~ /^cr\//) {
6754: # Custom role, defined by a user
6755: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6756: } elsif ($trole eq 'gr') {
6757: # Role of a member in a group, defined within a course/community
6758: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6759: next;
6760: } else {
6761: # Normal role, defined in roles.tab
6762: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6763: }
6764:
6765: my $cid = $tdomain.'_'.$trest;
6766: unless ($firstaccchk{$cid}) {
6767: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6768: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6769: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6770: $coursetimerstarts{$cid}{$item};
6771: }
6772: }
6773: $firstaccchk{$cid} = 1;
6774: }
6775: unless ($timerintchk{$cid}) {
6776: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6777: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6778: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6779: $coursetimerintervals{$cid}{$item};
6780: }
6781: }
6782: $timerintchk{$cid} = 1;
6783: }
6784: }
6785:
6786: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6787: \%allroles, \%allgroups);
6788: $env{'user.adv'} = $userroles{'user.adv'};
6789: $env{'user.rar'} = $userroles{'user.rar'};
6790:
6791: return (\%userroles,\%firstaccenv,\%timerintenv);
6792: }
6793:
6794: sub set_arearole {
6795: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6796: unless ($nolog) {
6797: # log the associated role with the area
6798: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6799: }
6800: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6801: }
6802:
6803: sub custom_roleprivs {
6804: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6805: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6806: my $homsvr = &homeserver($rauthor,$rdomain);
6807: if (&hostname($homsvr) ne '') {
6808: my ($rdummy,$roledef)=
6809: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6810: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6811: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6812: if (defined($syspriv)) {
6813: if ($trest =~ /^$match_community$/) {
6814: $syspriv =~ s/bre\&S//;
6815: }
6816: $$allroles{'cm./'}.=':'.$syspriv;
6817: $$allroles{$spec.'./'}.=':'.$syspriv;
6818: }
6819: if ($tdomain ne '') {
6820: if (defined($dompriv)) {
6821: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6822: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6823: }
6824: if (($trest ne '') && (defined($coursepriv))) {
6825: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6826: my $rolename = $1;
6827: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6828: }
6829: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6830: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6831: }
6832: }
6833: }
6834: }
6835: }
6836:
6837: sub course_adhocrole_privs {
6838: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6839: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6840: if ($overrides{"internal.adhocpriv.$rolename"}) {
6841: my (%currprivs,%storeprivs);
6842: foreach my $item (split(/:/,$coursepriv)) {
6843: my ($priv,$restrict) = split(/\&/,$item);
6844: $currprivs{$priv} = $restrict;
6845: }
6846: my (%possadd,%possremove,%full);
6847: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6848: my ($priv,$restrict)=split(/\&/,$item);
6849: $full{$priv} = $restrict;
6850: }
6851: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6852: next if ($item eq '');
6853: my ($rule,$rest) = split(/=/,$item);
6854: next unless (($rule eq 'off') || ($rule eq 'on'));
6855: foreach my $priv (split(/:/,$rest)) {
6856: if ($priv ne '') {
6857: if ($rule eq 'off') {
6858: $possremove{$priv} = 1;
6859: } else {
6860: $possadd{$priv} = 1;
6861: }
6862: }
6863: }
6864: }
6865: foreach my $priv (sort(keys(%full))) {
6866: if (exists($currprivs{$priv})) {
6867: unless (exists($possremove{$priv})) {
6868: $storeprivs{$priv} = $currprivs{$priv};
6869: }
6870: } elsif (exists($possadd{$priv})) {
6871: $storeprivs{$priv} = $full{$priv};
6872: }
6873: }
6874: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6875: }
6876: return $coursepriv;
6877: }
6878:
6879: sub group_roleprivs {
6880: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6881: my $access = 1;
6882: my $now = time;
6883: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6884: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6885: if ($access) {
6886: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6887: $$allgroups{$course}{$group} .=':'.$group_privs;
6888: }
6889: }
6890:
6891: sub standard_roleprivs {
6892: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6893: if (defined($pr{$trole.':s'})) {
6894: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6895: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6896: }
6897: if ($tdomain ne '') {
6898: if (defined($pr{$trole.':d'})) {
6899: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6900: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6901: }
6902: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6903: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6904: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6905: }
6906: }
6907: }
6908:
6909: sub set_userprivs {
6910: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6911: my $author=0;
6912: my $adv=0;
6913: my $rar=0;
6914: my %grouproles = ();
6915: if (keys(%{$allgroups}) > 0) {
6916: my @groupkeys;
6917: foreach my $role (keys(%{$allroles})) {
6918: push(@groupkeys,$role);
6919: }
6920: if (ref($groups_roles) eq 'HASH') {
6921: foreach my $key (keys(%{$groups_roles})) {
6922: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6923: push(@groupkeys,$key);
6924: }
6925: }
6926: }
6927: if (@groupkeys > 0) {
6928: foreach my $role (@groupkeys) {
6929: my ($trole,$area,$sec,$extendedarea);
6930: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6931: $trole = $1;
6932: $area = $2;
6933: $sec = $3;
6934: $extendedarea = $area.$sec;
6935: if (exists($$allgroups{$area})) {
6936: foreach my $group (keys(%{$$allgroups{$area}})) {
6937: my $spec = $trole.'.'.$extendedarea;
6938: $grouproles{$spec.'.'.$area.'/'.$group} =
6939: $$allgroups{$area}{$group};
6940: }
6941: }
6942: }
6943: }
6944: }
6945: }
6946: foreach my $group (keys(%grouproles)) {
6947: $$allroles{$group} = $grouproles{$group};
6948: }
6949: foreach my $role (keys(%{$allroles})) {
6950: my %thesepriv;
6951: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6952: foreach my $item (split(/:/,$$allroles{$role})) {
6953: if ($item ne '') {
6954: my ($privilege,$restrictions)=split(/&/,$item);
6955: if ($restrictions eq '') {
6956: $thesepriv{$privilege}='F';
6957: } elsif ($thesepriv{$privilege} ne 'F') {
6958: $thesepriv{$privilege}.=$restrictions;
6959: }
6960: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6961: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6962: }
6963: }
6964: my $thesestr='';
6965: foreach my $priv (sort(keys(%thesepriv))) {
6966: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6967: }
6968: $userroles->{'user.priv.'.$role} = $thesestr;
6969: }
6970: return ($author,$adv,$rar);
6971: }
6972:
6973: sub role_status {
6974: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6975: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6976: my ($one,$two) = split(m{\./},$rolekey,2);
6977: (undef,undef,$$role) = split(/\./,$one,3);
6978: unless (!defined($$role) || $$role eq '') {
6979: $$where = '/'.$two;
6980: $$trolecode=$$role.'.'.$$where;
6981: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6982: $$tstatus='is';
6983: if ($$tstart && $$tstart>$update) {
6984: $$tstatus='future';
6985: if ($$tstart<$now) {
6986: if ($$tstart && $$tstart>$refresh) {
6987: if (($$where ne '') && ($$role ne '')) {
6988: my (%allroles,%allgroups,$group_privs,
6989: %groups_roles,@rolecodes);
6990: my %userroles = (
6991: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6992: );
6993: @rolecodes = ('cm');
6994: my $spec=$$role.'.'.$$where;
6995: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6996: if ($$role =~ /^cr\//) {
6997: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6998: push(@rolecodes,'cr');
6999: } elsif ($$role eq 'gr') {
7000: push(@rolecodes,$$role);
7001: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
7002: $env{'user.name'});
7003: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
7004: (undef,my $group_privs) = split(/\//,$trole);
7005: $group_privs = &unescape($group_privs);
7006: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
7007: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
7008: &get_groups_roles($tdomain,$trest,
7009: \%course_roles,\@rolecodes,
7010: \%groups_roles);
7011: } else {
7012: push(@rolecodes,$$role);
7013: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
7014: }
7015: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
7016: \%groups_roles);
7017: &appenv(\%userroles,\@rolecodes);
7018: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
7019: }
7020: }
7021: $$tstatus = 'is';
7022: }
7023: }
7024: if ($$tend) {
7025: if ($$tend<$update) {
7026: $$tstatus='expired';
7027: } elsif ($$tend<$now) {
7028: $$tstatus='will_not';
7029: }
7030: }
7031: }
7032: }
7033: }
7034:
7035: sub get_groups_roles {
7036: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
7037: return unless((ref($cdom_courseroles) eq 'HASH') &&
7038: (ref($rolecodes) eq 'ARRAY') &&
7039: (ref($groups_roles) eq 'HASH'));
7040: if (keys(%{$cdom_courseroles}) > 0) {
7041: my ($cnum) = ($rest =~ /^($match_courseid)/);
7042: if ($cdom ne '' && $cnum ne '') {
7043: foreach my $key (keys(%{$cdom_courseroles})) {
7044: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
7045: my $crsrole = $1;
7046: my $crssec = $2;
7047: if ($crsrole =~ /^cr/) {
7048: unless (grep(/^cr$/,@{$rolecodes})) {
7049: push(@{$rolecodes},'cr');
7050: }
7051: } else {
7052: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
7053: push(@{$rolecodes},$crsrole);
7054: }
7055: }
7056: my $rolekey = "$crsrole./$cdom/$cnum";
7057: if ($crssec ne '') {
7058: $rolekey .= "/$crssec";
7059: }
7060: $rolekey .= './';
7061: $groups_roles->{$rolekey} = $rolecodes;
7062: }
7063: }
7064: }
7065: }
7066: return;
7067: }
7068:
7069: sub delete_env_groupprivs {
7070: my ($where,$courseroles,$possroles) = @_;
7071: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
7072: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
7073: unless (ref($courseroles->{$udom}) eq 'HASH') {
7074: %{$courseroles->{$udom}} =
7075: &get_my_roles('','','userroles',['active'],
7076: $possroles,[$udom],1);
7077: }
7078: if (ref($courseroles->{$udom}) eq 'HASH') {
7079: foreach my $item (keys(%{$courseroles->{$udom}})) {
7080: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
7081: my $area = '/'.$cdom.'/'.$cnum;
7082: my $privkey = "user.priv.$crsrole.$area";
7083: if ($crssec ne '') {
7084: $privkey .= '/'.$crssec;
7085: }
7086: $privkey .= ".$area/$group";
7087: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
7088: }
7089: }
7090: return;
7091: }
7092:
7093: sub check_adhoc_privs {
7094: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
7095: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
7096: if ($sec) {
7097: $cckey .= '/'.$sec;
7098: }
7099: my $setprivs;
7100: if ($env{$cckey}) {
7101: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
7102: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
7103: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
7104: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
7105: $setprivs = 1;
7106: }
7107: } else {
7108: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
7109: $setprivs = 1;
7110: }
7111: return $setprivs;
7112: }
7113:
7114: sub set_adhoc_privileges {
7115: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
7116: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
7117: my $area = '/'.$dcdom.'/'.$pickedcourse;
7118: if ($sec ne '') {
7119: $area .= '/'.$sec;
7120: }
7121: my $spec = $role.'.'.$area;
7122: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
7123: $env{'user.name'},1);
7124: my %rolehash = ();
7125: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
7126: my $rolename = $1;
7127: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
7128: my %domdef = &get_domain_defaults($dcdom);
7129: if (ref($domdef{'adhocroles'}) eq 'HASH') {
7130: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
7131: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
7132: }
7133: }
7134: } else {
7135: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
7136: }
7137: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
7138: &appenv(\%userroles,[$role,'cm']);
7139: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
7140: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
7141: ($caller eq 'tiny')) {
7142: &appenv( {'request.role' => $spec,
7143: 'request.role.domain' => $dcdom,
7144: 'request.course.sec' => $sec,
7145: }
7146: );
7147: my $tadv=0;
7148: if (&allowed('adv') eq 'F') { $tadv=1; }
7149: &appenv({'request.role.adv' => $tadv});
7150: }
7151: }
7152:
7153: # --------------------------------------------------------------- get interface
7154:
7155: sub get {
7156: my ($namespace,$storearr,$udomain,$uname)=@_;
7157: my $items='';
7158: foreach my $item (@$storearr) {
7159: $items.=&escape($item).'&';
7160: }
7161: $items=~s/\&$//;
7162: if (!$udomain) { $udomain=$env{'user.domain'}; }
7163: if (!$uname) { $uname=$env{'user.name'}; }
7164: my $uhome=&homeserver($uname,$udomain);
7165:
7166: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
7167: my @pairs=split(/\&/,$rep);
7168: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
7169: return @pairs;
7170: }
7171: my %returnhash=();
7172: my $i=0;
7173: foreach my $item (@$storearr) {
7174: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7175: $i++;
7176: }
7177: return %returnhash;
7178: }
7179:
7180: # --------------------------------------------------------------- del interface
7181:
7182: sub del {
7183: my ($namespace,$storearr,$udomain,$uname)=@_;
7184: my $items='';
7185: foreach my $item (@$storearr) {
7186: $items.=&escape($item).'&';
7187: }
7188:
7189: $items=~s/\&$//;
7190: if (!$udomain) { $udomain=$env{'user.domain'}; }
7191: if (!$uname) { $uname=$env{'user.name'}; }
7192: my $uhome=&homeserver($uname,$udomain);
7193: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
7194: }
7195:
7196: # -------------------------------------------------------------- dump interface
7197:
7198: sub unserialize {
7199: my ($rep, $escapedkeys) = @_;
7200:
7201: return {} if $rep =~ /^error/;
7202:
7203: my %returnhash=();
7204: foreach my $item (split(/\&/,$rep)) {
7205: my ($key, $value) = split(/=/, $item, 2);
7206: $key = unescape($key) unless $escapedkeys;
7207: next if $key =~ /^error: 2 /;
7208: $returnhash{$key} = &thaw_unescape($value);
7209: }
7210: #return %returnhash;
7211: return \%returnhash;
7212: }
7213:
7214: # see Lond::dump_with_regexp
7215: # if $escapedkeys hash keys won't get unescaped.
7216: sub dump {
7217: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys,$encrypt)=@_;
7218: if (!$udomain) { $udomain=$env{'user.domain'}; }
7219: if (!$uname) { $uname=$env{'user.name'}; }
7220: my $uhome=&homeserver($uname,$udomain);
7221:
7222: if ($regexp) {
7223: $regexp=&escape($regexp);
7224: } else {
7225: $regexp='.';
7226: }
7227: if (grep { $_ eq $uhome } current_machine_ids()) {
7228: # user is hosted on this machine
7229: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
7230: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
7231: return %{unserialize($reply, $escapedkeys)};
7232: }
7233: my $rep;
7234: if ($encrypt) {
7235: $rep=&reply("encrypt:edump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7236: } else {
7237: $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7238: }
7239: my @pairs=split(/\&/,$rep);
7240: my %returnhash=();
7241: if (!($rep =~ /^error/ )) {
7242: foreach my $item (@pairs) {
7243: my ($key,$value)=split(/=/,$item,2);
7244: $key = unescape($key) unless $escapedkeys;
7245: #$key = &unescape($key);
7246: next if ($key =~ /^error: 2 /);
7247: $returnhash{$key}=&thaw_unescape($value);
7248: }
7249: }
7250: return %returnhash;
7251: }
7252:
7253:
7254: # --------------------------------------------------------- dumpstore interface
7255:
7256: sub dumpstore {
7257: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
7258: # same as dump but keys must be escaped. They may contain colon separated
7259: # lists of values that may themself contain colons (e.g. symbs).
7260: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
7261: }
7262:
7263: # -------------------------------------------------------------- keys interface
7264:
7265: sub getkeys {
7266: my ($namespace,$udomain,$uname)=@_;
7267: if (!$udomain) { $udomain=$env{'user.domain'}; }
7268: if (!$uname) { $uname=$env{'user.name'}; }
7269: my $uhome=&homeserver($uname,$udomain);
7270: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
7271: my @keyarray=();
7272: foreach my $key (split(/\&/,$rep)) {
7273: next if ($key =~ /^error: 2 /);
7274: push(@keyarray,&unescape($key));
7275: }
7276: return @keyarray;
7277: }
7278:
7279: # --------------------------------------------------------------- currentdump
7280: sub currentdump {
7281: my ($courseid,$sdom,$sname)=@_;
7282: $courseid = $env{'request.course.id'} if (! defined($courseid));
7283: $sdom = $env{'user.domain'} if (! defined($sdom));
7284: $sname = $env{'user.name'} if (! defined($sname));
7285: my $uhome = &homeserver($sname,$sdom);
7286: my $rep;
7287:
7288: if (grep { $_ eq $uhome } current_machine_ids()) {
7289: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
7290: $courseid)));
7291: } else {
7292: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
7293: }
7294:
7295: return if ($rep =~ /^(error:|no_such_host)/);
7296: #
7297: my %returnhash=();
7298: #
7299: if ($rep eq 'unknown_cmd') {
7300: # an old lond will not know currentdump
7301: # Do a dump and make it look like a currentdump
7302: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
7303: return if ($tmp[0] =~ /^(error:|no_such_host)/);
7304: my %hash = @tmp;
7305: @tmp=();
7306: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
7307: } else {
7308: my @pairs=split(/\&/,$rep);
7309: foreach my $pair (@pairs) {
7310: my ($key,$value)=split(/=/,$pair,2);
7311: my ($symb,$param) = split(/:/,$key);
7312: $returnhash{&unescape($symb)}->{&unescape($param)} =
7313: &thaw_unescape($value);
7314: }
7315: }
7316: return %returnhash;
7317: }
7318:
7319: sub convert_dump_to_currentdump{
7320: my %hash = %{shift()};
7321: my %returnhash;
7322: # Code ripped from lond, essentially. The only difference
7323: # here is the unescaping done by lonnet::dump(). Conceivably
7324: # we might run in to problems with parameter names =~ /^v\./
7325: while (my ($key,$value) = each(%hash)) {
7326: my ($v,$symb,$param) = split(/:/,$key);
7327: $symb = &unescape($symb);
7328: $param = &unescape($param);
7329: next if ($v eq 'version' || $symb eq 'keys');
7330: next if (exists($returnhash{$symb}) &&
7331: exists($returnhash{$symb}->{$param}) &&
7332: $returnhash{$symb}->{'v.'.$param} > $v);
7333: $returnhash{$symb}->{$param}=$value;
7334: $returnhash{$symb}->{'v.'.$param}=$v;
7335: }
7336: #
7337: # Remove all of the keys in the hashes which keep track of
7338: # the version of the parameter.
7339: while (my ($symb,$param_hash) = each(%returnhash)) {
7340: # use a foreach because we are going to delete from the hash.
7341: foreach my $key (keys(%$param_hash)) {
7342: delete($param_hash->{$key}) if ($key =~ /^v\./);
7343: }
7344: }
7345: return \%returnhash;
7346: }
7347:
7348: # ------------------------------------------------------ critical inc interface
7349:
7350: sub cinc {
7351: return &inc(@_,'critical');
7352: }
7353:
7354: # --------------------------------------------------------------- inc interface
7355:
7356: sub inc {
7357: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7358: if (!$udomain) { $udomain=$env{'user.domain'}; }
7359: if (!$uname) { $uname=$env{'user.name'}; }
7360: my $uhome=&homeserver($uname,$udomain);
7361: my $items='';
7362: if (! ref($store)) {
7363: # got a single value, so use that instead
7364: $items = &escape($store).'=&';
7365: } elsif (ref($store) eq 'SCALAR') {
7366: $items = &escape($$store).'=&';
7367: } elsif (ref($store) eq 'ARRAY') {
7368: $items = join('=&',map {&escape($_);} @{$store});
7369: } elsif (ref($store) eq 'HASH') {
7370: while (my($key,$value) = each(%{$store})) {
7371: $items.= &escape($key).'='.&escape($value).'&';
7372: }
7373: }
7374: $items=~s/\&$//;
7375: if ($critical) {
7376: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7377: } else {
7378: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7379: }
7380: }
7381:
7382: # --------------------------------------------------------------- put interface
7383:
7384: sub put {
7385: my ($namespace,$storehash,$udomain,$uname,$encrypt)=@_;
7386: if (!$udomain) { $udomain=$env{'user.domain'}; }
7387: if (!$uname) { $uname=$env{'user.name'}; }
7388: my $uhome=&homeserver($uname,$udomain);
7389: my $items='';
7390: foreach my $item (keys(%$storehash)) {
7391: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7392: }
7393: $items=~s/\&$//;
7394: if ($encrypt) {
7395: return &reply("encrypt:put:$udomain:$uname:$namespace:$items",$uhome);
7396: } else {
7397: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7398: }
7399: }
7400:
7401: # ------------------------------------------------------------ newput interface
7402:
7403: sub newput {
7404: my ($namespace,$storehash,$udomain,$uname)=@_;
7405: if (!$udomain) { $udomain=$env{'user.domain'}; }
7406: if (!$uname) { $uname=$env{'user.name'}; }
7407: my $uhome=&homeserver($uname,$udomain);
7408: my $items='';
7409: foreach my $key (keys(%$storehash)) {
7410: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7411: }
7412: $items=~s/\&$//;
7413: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7414: }
7415:
7416: # --------------------------------------------------------- putstore interface
7417:
7418: sub putstore {
7419: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7420: if (!$udomain) { $udomain=$env{'user.domain'}; }
7421: if (!$uname) { $uname=$env{'user.name'}; }
7422: my $uhome=&homeserver($uname,$udomain);
7423: my $items='';
7424: foreach my $key (keys(%$storehash)) {
7425: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7426: }
7427: $items=~s/\&$//;
7428: my $esc_symb=&escape($symb);
7429: my $esc_v=&escape($version);
7430: my $reply =
7431: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7432: $uhome);
7433: if (($tolog) && ($reply eq 'ok')) {
7434: my $namevalue='';
7435: foreach my $key (keys(%{$storehash})) {
7436: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7437: }
7438: my $ip = &get_requestor_ip();
7439: $namevalue .= 'ip='.&escape($ip).
7440: '&host='.&escape($perlvar{'lonHostID'}).
7441: '&version='.$esc_v.
7442: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7443: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7444: }
7445: if ($reply eq 'unknown_cmd') {
7446: # gfall back to way things use to be done
7447: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7448: $uname);
7449: }
7450: return $reply;
7451: }
7452:
7453: sub old_putstore {
7454: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7455: if (!$udomain) { $udomain=$env{'user.domain'}; }
7456: if (!$uname) { $uname=$env{'user.name'}; }
7457: my $uhome=&homeserver($uname,$udomain);
7458: my %newstorehash;
7459: foreach my $item (keys(%$storehash)) {
7460: my $key = $version.':'.&escape($symb).':'.$item;
7461: $newstorehash{$key} = $storehash->{$item};
7462: }
7463: my $items='';
7464: my %allitems = ();
7465: foreach my $item (keys(%newstorehash)) {
7466: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7467: my $key = $1.':keys:'.$2;
7468: $allitems{$key} .= $3.':';
7469: }
7470: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7471: }
7472: foreach my $item (keys(%allitems)) {
7473: $allitems{$item} =~ s/\:$//;
7474: $items.= $item.'='.$allitems{$item}.'&';
7475: }
7476: $items=~s/\&$//;
7477: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7478: }
7479:
7480: # ------------------------------------------------------ critical put interface
7481:
7482: sub cput {
7483: my ($namespace,$storehash,$udomain,$uname)=@_;
7484: if (!$udomain) { $udomain=$env{'user.domain'}; }
7485: if (!$uname) { $uname=$env{'user.name'}; }
7486: my $uhome=&homeserver($uname,$udomain);
7487: my $items='';
7488: foreach my $item (keys(%$storehash)) {
7489: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7490: }
7491: $items=~s/\&$//;
7492: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7493: }
7494:
7495: # -------------------------------------------------------------- eget interface
7496:
7497: sub eget {
7498: my ($namespace,$storearr,$udomain,$uname)=@_;
7499: my $items='';
7500: foreach my $item (@$storearr) {
7501: $items.=&escape($item).'&';
7502: }
7503: $items=~s/\&$//;
7504: if (!$udomain) { $udomain=$env{'user.domain'}; }
7505: if (!$uname) { $uname=$env{'user.name'}; }
7506: my $uhome=&homeserver($uname,$udomain);
7507: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7508: my @pairs=split(/\&/,$rep);
7509: my %returnhash=();
7510: my $i=0;
7511: foreach my $item (@$storearr) {
7512: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7513: $i++;
7514: }
7515: return %returnhash;
7516: }
7517:
7518: # ------------------------------------------------------------ tmpput interface
7519: sub tmpput {
7520: my ($storehash,$server,$context)=@_;
7521: my $items='';
7522: foreach my $item (keys(%$storehash)) {
7523: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7524: }
7525: $items=~s/\&$//;
7526: if (defined($context)) {
7527: $items .= ':'.&escape($context);
7528: }
7529: return &reply("tmpput:$items",$server);
7530: }
7531:
7532: # ------------------------------------------------------------ tmpget interface
7533: sub tmpget {
7534: my ($token,$server)=@_;
7535: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7536: my $rep=&reply("tmpget:$token",$server);
7537: my %returnhash;
7538: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7539: return %returnhash;
7540: }
7541: foreach my $item (split(/\&/,$rep)) {
7542: my ($key,$value)=split(/=/,$item);
7543: $returnhash{&unescape($key)}=&thaw_unescape($value);
7544: }
7545: return %returnhash;
7546: }
7547:
7548: # ------------------------------------------------------------ tmpdel interface
7549: sub tmpdel {
7550: my ($token,$server)=@_;
7551: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7552: return &reply("tmpdel:$token",$server);
7553: }
7554:
7555: # ------------------------------------------------------------ get_timebased_id
7556:
7557: sub get_timebased_id {
7558: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7559: $maxtries) = @_;
7560: my ($newid,$error,$dellock);
7561: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7562: return ('','ok','invalid call to get suffix');
7563: }
7564:
7565: # set defaults for any optional args for which values were not supplied
7566: if ($who eq '') {
7567: $who = $env{'user.name'}.':'.$env{'user.domain'};
7568: }
7569: if (!$locktries) {
7570: $locktries = 3;
7571: }
7572: if (!$maxtries) {
7573: $maxtries = 10;
7574: }
7575:
7576: if (($cdom eq '') || ($cnum eq '')) {
7577: if ($env{'request.course.id'}) {
7578: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7579: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7580: }
7581: if (($cdom eq '') || ($cnum eq '')) {
7582: return ('','ok','call to get suffix not in course context');
7583: }
7584: }
7585:
7586: # construct locking item
7587: my $lockhash = {
7588: $prefix."\0".'locked_'.$keyid => $who,
7589: };
7590: my $tries = 0;
7591:
7592: # attempt to get lock on nohist_$namespace file
7593: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7594: while (($gotlock ne 'ok') && $tries <$locktries) {
7595: $tries ++;
7596: sleep 1;
7597: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7598: }
7599:
7600: # attempt to get unique identifier, based on current timestamp
7601: if ($gotlock eq 'ok') {
7602: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7603: my $id = time;
7604: $newid = $id;
7605: if ($idtype eq 'addcode') {
7606: $newid .= &sixnum_code();
7607: }
7608: my $idtries = 0;
7609: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7610: if ($idtype eq 'concat') {
7611: $newid = $id.$idtries;
7612: } elsif ($idtype eq 'addcode') {
7613: $newid = $newid.&sixnum_code();
7614: } else {
7615: $newid ++;
7616: }
7617: $idtries ++;
7618: }
7619: if (!exists($inuse{$prefix."\0".$newid})) {
7620: my %new_item = (
7621: $prefix."\0".$newid => $who,
7622: );
7623: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
7624: $cdom,$cnum);
7625: if ($putresult ne 'ok') {
7626: undef($newid);
7627: $error = 'error saving new item: '.$putresult;
7628: }
7629: } else {
7630: undef($newid);
7631: $error = ('error: no unique suffix available for the new item ');
7632: }
7633: # remove lock
7634: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7635: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7636: } else {
7637: $error = "error: could not obtain lockfile\n";
7638: $dellock = 'ok';
7639: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7640: $dellock = 'nolock';
7641: }
7642: }
7643: return ($newid,$dellock,$error);
7644: }
7645:
7646: sub sixnum_code {
7647: my $code;
7648: for (0..6) {
7649: $code .= int( rand(9) );
7650: }
7651: return $code;
7652: }
7653:
7654: # -------------------------------------------------- portfolio access checking
7655:
7656: sub portfolio_access {
7657: my ($requrl,$clientip) = @_;
7658: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7659: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7660: if ($result) {
7661: my %setters;
7662: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7663: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
7664: &Apache::loncommon::blockcheck(\%setters,'port',$clientip,$unum,$udom);
7665: if (($startblock && $endblock) || ($by_ip)) {
7666: return 'B';
7667: }
7668: } else {
7669: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
7670: &Apache::loncommon::blockcheck(\%setters,'port',$clientip);
7671: if (($startblock && $endblock) || ($by_ip)) {
7672: return 'B';
7673: }
7674: }
7675: }
7676: if ($result eq 'ok') {
7677: return 'F';
7678: } elsif ($result =~ /^[^:]+:guest_/) {
7679: return 'A';
7680: }
7681: return '';
7682: }
7683:
7684: sub get_portfolio_access {
7685: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7686:
7687: if (!ref($access_hash)) {
7688: my $current_perms = &get_portfile_permissions($udom,$unum);
7689: my %access_controls = &get_access_controls($current_perms,$group,
7690: $file_name);
7691: $access_hash = $access_controls{$file_name};
7692: }
7693:
7694: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7695: my $now = time;
7696: if (ref($access_hash) eq 'HASH') {
7697: foreach my $key (keys(%{$access_hash})) {
7698: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7699: if ($start > $now) {
7700: next;
7701: }
7702: if ($end && $end<$now) {
7703: next;
7704: }
7705: if ($scope eq 'public') {
7706: $public = $key;
7707: last;
7708: } elsif ($scope eq 'guest') {
7709: $guest = $key;
7710: } elsif ($scope eq 'domains') {
7711: push(@domains,$key);
7712: } elsif ($scope eq 'users') {
7713: push(@users,$key);
7714: } elsif ($scope eq 'course') {
7715: push(@courses,$key);
7716: } elsif ($scope eq 'group') {
7717: push(@groups,$key);
7718: } elsif ($scope eq 'ip') {
7719: push(@ips,$key);
7720: }
7721: }
7722: if ($public) {
7723: return 'ok';
7724: } elsif (@ips > 0) {
7725: my $allowed;
7726: foreach my $ipkey (@ips) {
7727: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7728: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7729: $allowed = 1;
7730: last;
7731: }
7732: }
7733: }
7734: if ($allowed) {
7735: return 'ok';
7736: }
7737: }
7738: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7739: if ($guest) {
7740: return $guest;
7741: }
7742: } else {
7743: if (@domains > 0) {
7744: foreach my $domkey (@domains) {
7745: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7746: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7747: return 'ok';
7748: }
7749: }
7750: }
7751: }
7752: if (@users > 0) {
7753: foreach my $userkey (@users) {
7754: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7755: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7756: if (ref($item) eq 'HASH') {
7757: if (($item->{'uname'} eq $env{'user.name'}) &&
7758: ($item->{'udom'} eq $env{'user.domain'})) {
7759: return 'ok';
7760: }
7761: }
7762: }
7763: }
7764: }
7765: }
7766: my %roleshash;
7767: my @courses_and_groups = @courses;
7768: push(@courses_and_groups,@groups);
7769: if (@courses_and_groups > 0) {
7770: my (%allgroups,%allroles);
7771: my ($start,$end,$role,$sec,$group);
7772: foreach my $envkey (%env) {
7773: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7774: my $cid = $2.'_'.$3;
7775: if ($1 eq 'gr') {
7776: $group = $4;
7777: $allgroups{$cid}{$group} = $env{$envkey};
7778: } else {
7779: if ($4 eq '') {
7780: $sec = 'none';
7781: } else {
7782: $sec = $4;
7783: }
7784: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7785: }
7786: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7787: my $cid = $2.'_'.$3;
7788: if ($4 eq '') {
7789: $sec = 'none';
7790: } else {
7791: $sec = $4;
7792: }
7793: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7794: }
7795: }
7796: if (keys(%allroles) == 0) {
7797: return;
7798: }
7799: foreach my $key (@courses_and_groups) {
7800: my %content = %{$$access_hash{$key}};
7801: my $cnum = $content{'number'};
7802: my $cdom = $content{'domain'};
7803: my $cid = $cdom.'_'.$cnum;
7804: if (!exists($allroles{$cid})) {
7805: next;
7806: }
7807: foreach my $role_id (keys(%{$content{'roles'}})) {
7808: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7809: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7810: my @status = @{$content{'roles'}{$role_id}{'access'}};
7811: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7812: foreach my $role (keys(%{$allroles{$cid}})) {
7813: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7814: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7815: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7816: if (grep/^all$/,@sections) {
7817: return 'ok';
7818: } else {
7819: if (grep/^$sec$/,@sections) {
7820: return 'ok';
7821: }
7822: }
7823: }
7824: }
7825: if (keys(%{$allgroups{$cid}}) == 0) {
7826: if (grep/^none$/,@groups) {
7827: return 'ok';
7828: }
7829: } else {
7830: if (grep/^all$/,@groups) {
7831: return 'ok';
7832: }
7833: foreach my $group (keys(%{$allgroups{$cid}})) {
7834: if (grep/^$group$/,@groups) {
7835: return 'ok';
7836: }
7837: }
7838: }
7839: }
7840: }
7841: }
7842: }
7843: }
7844: if ($guest) {
7845: return $guest;
7846: }
7847: }
7848: }
7849: return;
7850: }
7851:
7852: sub course_group_datechecker {
7853: my ($dates,$now,$status) = @_;
7854: my ($start,$end) = split(/\./,$dates);
7855: if (!$start && !$end) {
7856: return 'ok';
7857: }
7858: if (grep/^active$/,@{$status}) {
7859: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7860: return 'ok';
7861: }
7862: }
7863: if (grep/^previous$/,@{$status}) {
7864: if ($end > $now ) {
7865: return 'ok';
7866: }
7867: }
7868: if (grep/^future$/,@{$status}) {
7869: if ($start > $now) {
7870: return 'ok';
7871: }
7872: }
7873: return;
7874: }
7875:
7876: sub parse_portfolio_url {
7877: my ($url) = @_;
7878:
7879: my ($type,$udom,$unum,$group,$file_name);
7880:
7881: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7882: $type = 1;
7883: $udom = $1;
7884: $unum = $2;
7885: $file_name = $3;
7886: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7887: $type = 2;
7888: $udom = $1;
7889: $unum = $2;
7890: $group = $3;
7891: $file_name = $3.'/'.$4;
7892: }
7893: if (wantarray) {
7894: return ($type,$udom,$unum,$file_name,$group);
7895: }
7896: return $type;
7897: }
7898:
7899: sub is_portfolio_url {
7900: my ($url) = @_;
7901: return scalar(&parse_portfolio_url($url));
7902: }
7903:
7904: sub is_portfolio_file {
7905: my ($file) = @_;
7906: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7907: return 1;
7908: }
7909: return;
7910: }
7911:
7912: sub usertools_access {
7913: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7914: my ($access,%tools);
7915: if ($context eq '') {
7916: $context = 'tools';
7917: }
7918: if ($context eq 'requestcourses') {
7919: %tools = (
7920: official => 1,
7921: unofficial => 1,
7922: community => 1,
7923: textbook => 1,
7924: placement => 1,
7925: lti => 1,
7926: );
7927: } elsif ($context eq 'requestauthor') {
7928: %tools = (
7929: requestauthor => 1,
7930: );
7931: } else {
7932: %tools = (
7933: aboutme => 1,
7934: blog => 1,
7935: webdav => 1,
7936: portfolio => 1,
7937: );
7938: }
7939: return if (!defined($tools{$tool}));
7940:
7941: if (($udom eq '') || ($uname eq '')) {
7942: $udom = $env{'user.domain'};
7943: $uname = $env{'user.name'};
7944: }
7945:
7946: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7947: if ($action ne 'reload') {
7948: if ($context eq 'requestcourses') {
7949: return $env{'environment.canrequest.'.$tool};
7950: } elsif ($context eq 'requestauthor') {
7951: return $env{'environment.canrequest.author'};
7952: } else {
7953: return $env{'environment.availabletools.'.$tool};
7954: }
7955: }
7956: }
7957:
7958: my ($toolstatus,$inststatus,$envkey);
7959: if ($context eq 'requestauthor') {
7960: $envkey = $context;
7961: } else {
7962: $envkey = $context.'.'.$tool;
7963: }
7964:
7965: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7966: ($action ne 'reload')) {
7967: $toolstatus = $env{'environment.'.$envkey};
7968: $inststatus = $env{'environment.inststatus'};
7969: } else {
7970: if (ref($userenvref) eq 'HASH') {
7971: $toolstatus = $userenvref->{$envkey};
7972: $inststatus = $userenvref->{'inststatus'};
7973: } else {
7974: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7975: $toolstatus = $userenv{$envkey};
7976: $inststatus = $userenv{'inststatus'};
7977: }
7978: }
7979:
7980: if ($toolstatus ne '') {
7981: if ($toolstatus) {
7982: $access = 1;
7983: } else {
7984: $access = 0;
7985: }
7986: return $access;
7987: }
7988:
7989: my ($is_adv,%domdef);
7990: if (ref($is_advref) eq 'HASH') {
7991: $is_adv = $is_advref->{'is_adv'};
7992: } else {
7993: $is_adv = &is_advanced_user($udom,$uname);
7994: }
7995: if (ref($domdefref) eq 'HASH') {
7996: %domdef = %{$domdefref};
7997: } else {
7998: %domdef = &get_domain_defaults($udom);
7999: }
8000: if (ref($domdef{$tool}) eq 'HASH') {
8001: if ($is_adv) {
8002: if ($domdef{$tool}{'_LC_adv'} ne '') {
8003: if ($domdef{$tool}{'_LC_adv'}) {
8004: $access = 1;
8005: } else {
8006: $access = 0;
8007: }
8008: return $access;
8009: }
8010: }
8011: if ($inststatus ne '') {
8012: my ($hasaccess,$hasnoaccess);
8013: foreach my $affiliation (split(/:/,$inststatus)) {
8014: if ($domdef{$tool}{$affiliation} ne '') {
8015: if ($domdef{$tool}{$affiliation}) {
8016: $hasaccess = 1;
8017: } else {
8018: $hasnoaccess = 1;
8019: }
8020: }
8021: }
8022: if ($hasaccess || $hasnoaccess) {
8023: if ($hasaccess) {
8024: $access = 1;
8025: } elsif ($hasnoaccess) {
8026: $access = 0;
8027: }
8028: return $access;
8029: }
8030: } else {
8031: if ($domdef{$tool}{'default'} ne '') {
8032: if ($domdef{$tool}{'default'}) {
8033: $access = 1;
8034: } elsif ($domdef{$tool}{'default'} == 0) {
8035: $access = 0;
8036: }
8037: return $access;
8038: }
8039: }
8040: } else {
8041: if (($context eq 'tools') && ($tool ne 'webdav')) {
8042: $access = 1;
8043: } else {
8044: $access = 0;
8045: }
8046: return $access;
8047: }
8048: }
8049:
8050: sub is_course_owner {
8051: my ($cdom,$cnum,$udom,$uname) = @_;
8052: if (($udom eq '') || ($uname eq '')) {
8053: $udom = $env{'user.domain'};
8054: $uname = $env{'user.name'};
8055: }
8056: unless (($udom eq '') || ($uname eq '')) {
8057: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
8058: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
8059: return 1;
8060: } else {
8061: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
8062: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
8063: return 1;
8064: }
8065: }
8066: }
8067: }
8068: return;
8069: }
8070:
8071: sub is_advanced_user {
8072: my ($udom,$uname) = @_;
8073: if ($udom ne '' && $uname ne '') {
8074: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8075: if (wantarray) {
8076: return ($env{'user.adv'},$env{'user.author'});
8077: } else {
8078: return $env{'user.adv'};
8079: }
8080: }
8081: }
8082: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
8083: my %allroles;
8084: my ($is_adv,$is_author);
8085: foreach my $role (keys(%roleshash)) {
8086: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
8087: my $area = '/'.$tdomain.'/'.$trest;
8088: if ($sec ne '') {
8089: $area .= '/'.$sec;
8090: }
8091: if (($area ne '') && ($trole ne '')) {
8092: my $spec=$trole.'.'.$area;
8093: if ($trole =~ /^cr\//) {
8094: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
8095: } elsif ($trole ne 'gr') {
8096: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
8097: }
8098: if ($trole eq 'au') {
8099: $is_author = 1;
8100: }
8101: }
8102: }
8103: foreach my $role (keys(%allroles)) {
8104: last if ($is_adv);
8105: foreach my $item (split(/:/,$allroles{$role})) {
8106: if ($item ne '') {
8107: my ($privilege,$restrictions)=split(/&/,$item);
8108: if ($privilege eq 'adv') {
8109: $is_adv = 1;
8110: last;
8111: }
8112: }
8113: }
8114: }
8115: if (wantarray) {
8116: return ($is_adv,$is_author);
8117: }
8118: return $is_adv;
8119: }
8120:
8121: sub check_can_request {
8122: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
8123: my $canreq = 0;
8124: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8125: $uname = $env{'user.name'};
8126: $udom = $env{'user.domain'};
8127: }
8128: my ($types,$typename) = &Apache::loncommon::course_types();
8129: my @options = ('approval','validate','autolimit');
8130: my $optregex = join('|',@options);
8131: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
8132: my %willtrust;
8133: foreach my $type (@{$types}) {
8134: if (&usertools_access($uname,$udom,$type,undef,
8135: 'requestcourses')) {
8136: $canreq ++;
8137: if (ref($request_domains) eq 'HASH') {
8138: push(@{$request_domains->{$type}},$udom);
8139: }
8140: if ($dom eq $udom) {
8141: $can_request->{$type} = 1;
8142: }
8143: }
8144: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
8145: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
8146: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
8147: if (@curr > 0) {
8148: foreach my $item (@curr) {
8149: if (ref($request_domains) eq 'HASH') {
8150: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
8151: if ($otherdom ne '') {
8152: unless (exists($willtrust{$otherdom})) {
8153: $willtrust{$otherdom} = &will_trust('reqcrs',$env{'user.domain'},$otherdom);
8154: }
8155: if ($willtrust{$otherdom}) {
8156: if (ref($request_domains->{$type}) eq 'ARRAY') {
8157: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
8158: push(@{$request_domains->{$type}},$otherdom);
8159: }
8160: } else {
8161: push(@{$request_domains->{$type}},$otherdom);
8162: }
8163: }
8164: }
8165: }
8166: }
8167: unless ($dom eq $env{'user.domain'}) {
8168: $canreq ++;
8169: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
8170: $can_request->{$type} = 1;
8171: }
8172: }
8173: }
8174: }
8175: }
8176: }
8177: return $canreq;
8178: }
8179:
8180: # ---------------------------------------------- Custom access rule evaluation
8181:
8182: sub customaccess {
8183: my ($priv,$uri)=@_;
8184: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
8185: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
8186: $udom = &LONCAPA::clean_domain($udom);
8187: $ucrs = &LONCAPA::clean_username($ucrs);
8188: my $access=0;
8189: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
8190: my ($effect,$realm,$role,$type)=split(/\:/,$right);
8191: if ($type eq 'user') {
8192: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8193: my ($tdom,$tuname)=split(m{/},$scope);
8194: if ($tdom) {
8195: if ($tdom ne $env{'user.domain'}) { next; }
8196: }
8197: if ($tuname) {
8198: if ($tuname ne $env{'user.name'}) { next; }
8199: }
8200: $access=($effect eq 'allow');
8201: last;
8202: }
8203: } else {
8204: if ($role) {
8205: if ($role ne $urole) { next; }
8206: }
8207: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8208: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
8209: if ($tdom) {
8210: if ($tdom ne $udom) { next; }
8211: }
8212: if ($tcrs) {
8213: if ($tcrs ne $ucrs) { next; }
8214: }
8215: if ($tsec) {
8216: if ($tsec ne $usec) { next; }
8217: }
8218: $access=($effect eq 'allow');
8219: last;
8220: }
8221: if ($realm eq '' && $role eq '') {
8222: $access=($effect eq 'allow');
8223: }
8224: }
8225: }
8226: return $access;
8227: }
8228:
8229: # ------------------------------------------------- Check for a user privilege
8230:
8231: sub allowed {
8232: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck,$ignorecache,$nodeeplinkcheck,$nodeeplinkout)=@_;
8233: my $ver_orguri=$uri;
8234: $uri=&deversion($uri);
8235: my $orguri=$uri;
8236: $uri=&declutter($uri);
8237:
8238: if ($priv eq 'evb') {
8239: # Evade communication block restrictions for specified role in a course or domain
8240: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
8241: return $1;
8242: } else {
8243: return;
8244: }
8245: }
8246:
8247: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
8248: # Free bre access to adm and meta resources
8249: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|viewclasslist|aboutme|ext\.tool)$}))
8250: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
8251: && ($priv eq 'bre')) {
8252: return 'F';
8253: }
8254:
8255: # Free bre access to user's own portfolio contents
8256: my ($space,$domain,$name,@dir)=split('/',$uri);
8257: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
8258: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
8259: my %setters;
8260: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
8261: &Apache::loncommon::blockcheck(\%setters,'port',$clientip);
8262: if (($startblock && $endblock) || ($by_ip)) {
8263: return 'B';
8264: } else {
8265: return 'F';
8266: }
8267: }
8268:
8269: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
8270: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
8271: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
8272: if (exists($env{'request.course.id'})) {
8273: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8274: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8275: if (($domain eq $cdom) && ($name eq $cnum)) {
8276: my $courseprivid=$env{'request.course.id'};
8277: $courseprivid=~s/\_/\//;
8278: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
8279: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
8280: return $1;
8281: } else {
8282: if ($env{'request.course.sec'}) {
8283: $courseprivid.='/'.$env{'request.course.sec'};
8284: }
8285: if ($env{'user.priv.'.$env{'request.role'}.'./'.
8286: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
8287: return $2;
8288: }
8289: }
8290: }
8291: }
8292: }
8293:
8294: # Free bre to public access
8295:
8296: if ($priv eq 'bre') {
8297: my $copyright;
8298: unless ($uri =~ /ext\.tool/) {
8299: $copyright=&metadata($uri,'copyright');
8300: }
8301: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
8302: return 'F';
8303: }
8304: if ($copyright eq 'priv') {
8305: $uri=~/([^\/]+)\/([^\/]+)\//;
8306: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
8307: return '';
8308: }
8309: }
8310: if ($copyright eq 'domain') {
8311: $uri=~/([^\/]+)\/([^\/]+)\//;
8312: unless (($env{'user.domain'} eq $1) ||
8313: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
8314: return '';
8315: }
8316: }
8317: if ($env{'request.role'}=~ /li\.\//) {
8318: # Library role, so allow browsing of resources in this domain.
8319: return 'F';
8320: }
8321: if ($copyright eq 'custom') {
8322: unless (&customaccess($priv,$uri)) { return ''; }
8323: }
8324: }
8325: # Domain coordinator is trying to create a course
8326: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
8327: # uri is the requested domain in this case.
8328: # comparison to 'request.role.domain' shows if the user has selected
8329: # a role of dc for the domain in question.
8330: return 'F' if ($uri eq $env{'request.role.domain'});
8331: }
8332:
8333: my $thisallowed='';
8334: my $statecond=0;
8335: my $courseprivid='';
8336:
8337: my $ownaccess;
8338: # Community Coordinator or Assistant Co-author browsing resource space.
8339: if (($priv eq 'bro') && ($env{'user.author'})) {
8340: if ($uri eq '') {
8341: $ownaccess = 1;
8342: } else {
8343: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8344: my $udom = $env{'user.domain'};
8345: my $uname = $env{'user.name'};
8346: if ($uri =~ m{^\Q$udom\E/?$}) {
8347: $ownaccess = 1;
8348: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8349: unless ($uri =~ m{\.\./}) {
8350: $ownaccess = 1;
8351: }
8352: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8353: my $now = time;
8354: if ($uri =~ m{^([^/]+)/?$}) {
8355: my $adom = $1;
8356: foreach my $key (keys(%env)) {
8357: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8358: my ($start,$end) = split(/\./,$env{$key});
8359: if (($now >= $start) && (!$end || $end > $now)) {
8360: $ownaccess = 1;
8361: last;
8362: }
8363: }
8364: }
8365: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8366: my $adom = $1;
8367: my $aname = $2;
8368: foreach my $role ('ca','aa') {
8369: if ($env{"user.role.$role./$adom/$aname"}) {
8370: my ($start,$end) =
8371: split(/\./,$env{"user.role.$role./$adom/$aname"});
8372: if (($now >= $start) && (!$end || $end > $now)) {
8373: $ownaccess = 1;
8374: last;
8375: }
8376: }
8377: }
8378: }
8379: }
8380: }
8381: }
8382: }
8383:
8384: # Course
8385:
8386: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8387: unless (($priv eq 'bro') && (!$ownaccess)) {
8388: $thisallowed.=$1;
8389: }
8390: }
8391:
8392: # Domain
8393:
8394: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8395: =~/\Q$priv\E\&([^\:]*)/) {
8396: unless (($priv eq 'bro') && (!$ownaccess)) {
8397: $thisallowed.=$1;
8398: }
8399: }
8400:
8401: # User who is not author or co-author might still be able to edit
8402: # resource of an author in the domain (e.g., if Domain Coordinator).
8403: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8404: (&allowed('mdc',$env{'request.course.id'}))) {
8405: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8406: $thisallowed.=$1;
8407: }
8408: }
8409:
8410: # Course: uri itself is a course
8411: my $courseuri=$uri;
8412: $courseuri=~s/\_(\d)/\/$1/;
8413: $courseuri=~s/^([^\/])/\/$1/;
8414:
8415: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8416: =~/\Q$priv\E\&([^\:]*)/) {
8417: if ($priv eq 'mip') {
8418: my $rem = $1;
8419: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8420: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8421: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8422: if ($cdom ne '') {
8423: my %passwdconf = &get_passwdconf($cdom);
8424: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8425: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8426: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8427: my @inststatuses = split(':',$env{'environment.inststatus'});
8428: unless (@inststatuses) {
8429: @inststatuses = ('default');
8430: }
8431: foreach my $status (@inststatuses) {
8432: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8433: $thisallowed.=$rem;
8434: }
8435: }
8436: }
8437: }
8438: }
8439: }
8440: }
8441: } else {
8442: unless (($priv eq 'bro') && (!$ownaccess)) {
8443: $thisallowed.=$1;
8444: }
8445: }
8446: }
8447:
8448: # URI is an uploaded document for this course, default permissions don't matter
8449: # not allowing 'edit' access (editupload) to uploaded course docs
8450: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8451: $thisallowed='';
8452: my ($match)=&is_on_map($uri);
8453: if ($match) {
8454: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8455: =~/\Q$priv\E\&([^\:]*)/) {
8456: my $value = $1;
8457: my $deeplinkblock;
8458: unless ($nodeeplinkcheck) {
8459: $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8460: }
8461: if ($deeplinkblock) {
8462: $thisallowed='D';
8463: } elsif ($noblockcheck) {
8464: $thisallowed.=$value;
8465: } else {
8466: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8467: if (@blockers > 0) {
8468: $thisallowed = 'B';
8469: } else {
8470: $thisallowed.=$value;
8471: }
8472: }
8473: }
8474: } else {
8475: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8476: if ($refuri) {
8477: if ($refuri =~ m|^/adm/|) {
8478: $thisallowed='F';
8479: } else {
8480: $refuri=&declutter($refuri);
8481: my ($match) = &is_on_map($refuri);
8482: if ($match) {
8483: my $deeplinkblock;
8484: unless ($nodeeplinkcheck) {
8485: $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8486: }
8487: if ($deeplinkblock) {
8488: $thisallowed='D';
8489: } elsif ($noblockcheck) {
8490: $thisallowed='F';
8491: } else {
8492: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8493: if (@blockers > 0) {
8494: $thisallowed = 'B';
8495: } else {
8496: $thisallowed='F';
8497: }
8498: }
8499: }
8500: }
8501: }
8502: }
8503: }
8504:
8505: if ($priv eq 'bre'
8506: && $thisallowed ne 'F'
8507: && $thisallowed ne '2'
8508: && &is_portfolio_url($uri)) {
8509: $thisallowed = &portfolio_access($uri,$clientip);
8510: }
8511:
8512: # Full access at system, domain or course-wide level? Exit.
8513: if ($thisallowed=~/F/) {
8514: return 'F';
8515: }
8516:
8517: # If this is generating or modifying users, exit with special codes
8518:
8519: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
8520: if (($priv eq 'cca') || ($priv eq 'caa')) {
8521: my ($audom,$auname)=split('/',$uri);
8522: # no author name given, so this just checks on the general right to make a co-author in this domain
8523: unless ($auname) { return $thisallowed; }
8524: # an author name is given, so we are about to actually make a co-author for a certain account
8525: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8526: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8527: ($audom ne $env{'request.role.domain'}))) { return ''; }
8528: }
8529: return $thisallowed;
8530: }
8531: #
8532: # Gathered so far: system, domain and course wide privileges
8533: #
8534: # Course: See if uri or referer is an individual resource that is part of
8535: # the course
8536:
8537: if ($env{'request.course.id'}) {
8538:
8539: # If this is modifying password (internal auth) domains must match for user and user's role.
8540:
8541: if ($priv eq 'mip') {
8542: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8543: return $thisallowed;
8544: } else {
8545: return '';
8546: }
8547: }
8548:
8549: $courseprivid=$env{'request.course.id'};
8550: if ($env{'request.course.sec'}) {
8551: $courseprivid.='/'.$env{'request.course.sec'};
8552: }
8553: $courseprivid=~s/\_/\//;
8554: my $checkreferer=1;
8555: my ($match,$cond)=&is_on_map($uri);
8556: if ($match) {
8557: $statecond=$cond;
8558: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8559: =~/\Q$priv\E\&([^\:]*)/) {
8560: my $value = $1;
8561: if ($priv eq 'bre') {
8562: my $deeplinkblock;
8563: unless ($nodeeplinkcheck) {
8564: $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8565: }
8566: if ($deeplinkblock) {
8567: $thisallowed = 'D';
8568: } elsif ($noblockcheck) {
8569: $thisallowed.=$value;
8570: } else {
8571: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8572: if (@blockers > 0) {
8573: $thisallowed = 'B';
8574: } else {
8575: $thisallowed.=$value;
8576: }
8577: }
8578: } else {
8579: $thisallowed.=$value;
8580: }
8581: $checkreferer=0;
8582: }
8583: }
8584:
8585: if ($checkreferer) {
8586: my $refuri=$env{'httpref.'.$orguri};
8587: unless ($refuri) {
8588: foreach my $key (keys(%env)) {
8589: if ($key=~/^httpref\..*\*/) {
8590: my $pattern=$key;
8591: $pattern=~s/^httpref\.\/res\///;
8592: $pattern=~s/\*/\[\^\/\]\+/g;
8593: $pattern=~s/\//\\\//g;
8594: if ($orguri=~/$pattern/) {
8595: $refuri=$env{$key};
8596: }
8597: }
8598: }
8599: }
8600:
8601: if ($refuri) {
8602: $refuri=&declutter($refuri);
8603: my ($match,$cond)=&is_on_map($refuri);
8604: if ($match) {
8605: my $refstatecond=$cond;
8606: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8607: =~/\Q$priv\E\&([^\:]*)/) {
8608: my $value = $1;
8609: if ($priv eq 'bre') {
8610: my $deeplinkblock;
8611: unless ($nodeeplinkcheck) {
8612: $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8613: }
8614: if ($deeplinkblock) {
8615: $thisallowed = 'D';
8616: } elsif ($noblockcheck) {
8617: $thisallowed.=$value;
8618: } else {
8619: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8620: if (@blockers > 0) {
8621: $thisallowed = 'B';
8622: } else {
8623: $thisallowed.=$value;
8624: }
8625: }
8626: } else {
8627: $thisallowed.=$value;
8628: }
8629: $uri=$refuri;
8630: $statecond=$refstatecond;
8631: }
8632: }
8633: }
8634: }
8635: }
8636:
8637: #
8638: # Gathered now: all privileges that could apply, and condition number
8639: #
8640: #
8641: # Full or no access?
8642: #
8643:
8644: if ($thisallowed=~/F/) {
8645: return 'F';
8646: }
8647:
8648: unless ($thisallowed) {
8649: return '';
8650: }
8651:
8652: # Restrictions exist, deal with them
8653: #
8654: # C:according to course preferences
8655: # R:according to resource settings
8656: # L:unless locked
8657: # X:according to user session state
8658: #
8659:
8660: # Possibly locked functionality, check all courses
8661: # In roles.tab, L (unless locked) available for bre, pch, plc, pac and sma.
8662: # Locks might take effect only after 10 minutes cache expiration for other
8663: # courses, and 2 minutes for current course, in which user has st or ta role
8664: # which is neither expired nor a future role (unless current course).
8665:
8666: my ($needlockcheck,$now,$crsonly);
8667: if ($thisallowed=~/L/) {
8668: $now = time;
8669: if ($priv eq 'bre') {
8670: if ($uri ne '') {
8671: if ($orguri =~ m{^/+res/}) {
8672: if ($uri =~ m{^lib/templates/}) {
8673: if ($env{'request.course.id'}) {
8674: $crsonly = 1;
8675: $needlockcheck = 1;
8676: }
8677: } else {
8678: $needlockcheck = 1;
8679: }
8680: } elsif ($env{'request.course.id'}) {
8681: my ($crsdom,$crsnum) = split('_',$env{'request.course.id'});
8682: if (($uri =~ m{^(adm|uploaded|public)/$crsdom/$crsnum/}) ||
8683: ($uri =~ m{^adm/$match_domain/$match_username/\d+/(smppg|bulletinboard)$})) {
8684: $crsonly = 1;
8685: }
8686: $needlockcheck = 1;
8687: }
8688: }
8689: } elsif (($priv eq 'pch') || ($priv eq 'plc') || ($priv eq 'pac') || ($priv eq 'sma')) {
8690: $needlockcheck = 1;
8691: }
8692: }
8693: if ($needlockcheck) {
8694: foreach my $envkey (keys(%env)) {
8695: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
8696: my $courseid=$2;
8697: my $roleid=$1.'.'.$2;
8698: $courseid=~s/^\///;
8699: unless ($env{'request.role'} eq $roleid) {
8700: my ($start,$end) = split(/\./,$env{$envkey});
8701: next unless (($now >= $start) && (!$end || $end > $now));
8702: }
8703: my $expiretime=600;
8704: if ($env{'request.role'} eq $roleid) {
8705: $expiretime=120;
8706: }
8707: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
8708: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8709: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8710: &coursedescription($courseid,{'freshen_cache' => 1});
8711: }
8712: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8713: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8714: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8715: &log($env{'user.domain'},$env{'user.name'},
8716: $env{'user.home'},
8717: 'Locked by res: '.$priv.' for '.$uri.' due to '.
8718: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8719: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8720: return '';
8721: }
8722: }
8723: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
8724: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
8725: if ($env{$prefix.'priv.'.$priv.'.lock.expire'}>time) {
8726: &log($env{'user.domain'},$env{'user.name'},
8727: $env{'user.home'},
8728: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8729: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8730: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8731: return '';
8732: }
8733: }
8734: }
8735: }
8736: }
8737:
8738: #
8739: # Rest of the restrictions depend on selected course
8740: #
8741:
8742: unless ($env{'request.course.id'}) {
8743: if ($thisallowed eq 'A') {
8744: return 'A';
8745: } elsif ($thisallowed eq 'B') {
8746: return 'B';
8747: } else {
8748: return '1';
8749: }
8750: }
8751:
8752: #
8753: # Now user is definitely in a course
8754: #
8755:
8756:
8757: # Course preferences
8758:
8759: if ($thisallowed=~/C/) {
8760: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8761: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8762: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8763: =~/\Q$rolecode\E/) {
8764: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8765: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8766: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8767: $env{'request.course.id'});
8768: }
8769: return '';
8770: }
8771:
8772: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8773: =~/\Q$unamedom\E/) {
8774: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8775: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8776: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8777: $env{'request.course.id'});
8778: }
8779: return '';
8780: }
8781: }
8782:
8783: # Resource preferences
8784:
8785: if ($thisallowed=~/R/) {
8786: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8787: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8788: if (($priv ne 'pch') && ($priv ne 'plc')) {
8789: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8790: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8791: }
8792: return '';
8793: }
8794: }
8795:
8796: # Restricted for deeplinked session?
8797:
8798: if ($env{'request.deeplink.login'}) {
8799: if ($env{'acc.deeplinkout'} && !$nodeeplinkout) {
8800: if (!$symb) { $symb=&symbread($uri,1); }
8801: if (($symb) && ($env{'acc.deeplinkout'}=~/\&\Q$symb\E\&/)) {
8802: return '';
8803: }
8804: }
8805: }
8806:
8807: # Restricted by state or randomout?
8808:
8809: if ($thisallowed=~/X/) {
8810: if ($env{'acc.randomout'}) {
8811: if (!$symb) { $symb=&symbread($uri,1); }
8812: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8813: return '';
8814: }
8815: }
8816: if (&condval($statecond)) {
8817: return '2';
8818: } else {
8819: return '';
8820: }
8821: }
8822:
8823: if ($thisallowed eq 'A') {
8824: return 'A';
8825: } elsif ($thisallowed eq 'B') {
8826: return 'B';
8827: } elsif ($thisallowed eq 'D') {
8828: return 'D';
8829: }
8830: return 'F';
8831: }
8832:
8833: # ------------------------------------------- Check construction space access
8834:
8835: sub constructaccess {
8836: my ($url,$setpriv)=@_;
8837:
8838: # We do not allow editing of previous versions of files
8839: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8840:
8841: # Get username and domain from URL
8842: my ($ownername,$ownerdomain,$ownerhome);
8843:
8844: ($ownerdomain,$ownername) =
8845: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8846:
8847: # The URL does not really point to any authorspace, forget it
8848: unless (($ownername) && ($ownerdomain)) { return ''; }
8849:
8850: # Now we need to see if the user has access to the authorspace of
8851: # $ownername at $ownerdomain
8852:
8853: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8854: # Real author for this?
8855: $ownerhome = $env{'user.home'};
8856: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8857: return ($ownername,$ownerdomain,$ownerhome);
8858: }
8859: } else {
8860: # Co-author for this?
8861: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8862: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8863: $ownerhome = &homeserver($ownername,$ownerdomain);
8864: return ($ownername,$ownerdomain,$ownerhome);
8865: }
8866: if ($env{'request.course.id'}) {
8867: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8868: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8869: if (&allowed('mdc',$env{'request.course.id'})) {
8870: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8871: return ($ownername,$ownerdomain,$ownerhome);
8872: }
8873: }
8874: }
8875: }
8876:
8877: # We don't have any access right now. If we are not possibly going to do anything about this,
8878: # we might as well leave
8879: unless ($setpriv) { return ''; }
8880:
8881: # Backdoor access?
8882: my $allowed=&allowed('eco',$ownerdomain);
8883: # Nope
8884: unless ($allowed) { return ''; }
8885: # Looks like we may have access, but could be locked by the owner of the construction space
8886: if ($allowed eq 'U') {
8887: my %blocked=&get('environment',['domcoord.author'],
8888: $ownerdomain,$ownername);
8889: # Is blocked by owner
8890: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8891: }
8892: if (($allowed eq 'F') || ($allowed eq 'U')) {
8893: # Grant temporary access
8894: my $then=$env{'user.login.time'};
8895: my $update=$env{'user.update.time'};
8896: if (!$update) { $update = $then; }
8897: my $refresh=$env{'user.refresh.time'};
8898: if (!$refresh) { $refresh = $update; }
8899: my $now = time;
8900: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8901: $now,'ca','constructaccess');
8902: $ownerhome = &homeserver($ownername,$ownerdomain);
8903: return($ownername,$ownerdomain,$ownerhome);
8904: }
8905: # No business here
8906: return '';
8907: }
8908:
8909: # ----------------------------------------------------------- Content Blocking
8910:
8911: {
8912: # Caches for faster Course Contents display where content blocking
8913: # is in operation (i.e., interval param set) for timed quiz.
8914: #
8915: # User for whom data are being temporarily cached.
8916: my $cacheduser='';
8917: # Course for which data are being temporarily cached.
8918: my $cachedcid='';
8919: # Cached blockers for this user (a hash of blocking items).
8920: my %cachedblockers=();
8921: # When the data were last cached.
8922: my $cachedlast='';
8923:
8924: sub load_all_blockers {
8925: my ($uname,$udom)=@_;
8926: if (($uname ne '') && ($udom ne '')) {
8927: if (($cacheduser eq $uname.':'.$udom) &&
8928: ($cachedcid eq $env{'request.course.id'}) &&
8929: (abs($cachedlast-time)<5)) {
8930: return;
8931: }
8932: }
8933: $cachedlast=time;
8934: $cacheduser=$uname.':'.$udom;
8935: $cachedcid=$env{'request.course.id'};
8936: %cachedblockers = &get_commblock_resources();
8937: return;
8938: }
8939:
8940: sub get_comm_blocks {
8941: my ($cdom,$cnum) = @_;
8942: if ($cdom eq '' || $cnum eq '') {
8943: return unless ($env{'request.course.id'});
8944: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8945: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8946: }
8947: my %commblocks;
8948: my $hashid=$cdom.'_'.$cnum;
8949: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8950: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8951: %commblocks = %{$blocksref};
8952: } else {
8953: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8954: my $cachetime = 600;
8955: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8956: }
8957: return %commblocks;
8958: }
8959:
8960: sub get_commblock_resources {
8961: my ($blocks) = @_;
8962: my %blockers = ();
8963: return %blockers unless ($env{'request.course.id'});
8964: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
8965: if ($env{'request.course.sec'}) {
8966: $courseurl .= '/'.$env{'request.course.sec'};
8967: }
8968: return %blockers if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseurl} =~/evb\&([^\:]*)/);
8969: my %commblocks;
8970: if (ref($blocks) eq 'HASH') {
8971: %commblocks = %{$blocks};
8972: } else {
8973: %commblocks = &get_comm_blocks();
8974: }
8975: return %blockers unless (keys(%commblocks) > 0);
8976: my $navmap = Apache::lonnavmaps::navmap->new();
8977: return %blockers unless (ref($navmap));
8978: my $now = time;
8979: foreach my $block (keys(%commblocks)) {
8980: if ($block =~ /^(\d+)____(\d+)$/) {
8981: my ($start,$end) = ($1,$2);
8982: if ($start <= $now && $end >= $now) {
8983: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8984: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8985: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8986: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8987: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8988: }
8989: }
8990: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8991: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8992: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8993: }
8994: }
8995: }
8996: }
8997: }
8998: } elsif ($block =~ /^firstaccess____(.+)$/) {
8999: my $item = $1;
9000: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
9001: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
9002: my (@interval,$mapname);
9003: my $type = 'map';
9004: if ($item eq 'course') {
9005: $type = 'course';
9006: @interval=&EXT("resource.0.interval");
9007: } else {
9008: if ($item =~ /___\d+___/) {
9009: $type = 'resource';
9010: @interval=&EXT("resource.0.interval",$item);
9011: } else {
9012: $mapname = &deversion($item);
9013: if (ref($navmap)) {
9014: my $timelimit = $navmap->get_mapparam(undef,$mapname,'0.interval');
9015: @interval = ($timelimit,'map');
9016: }
9017: }
9018: }
9019: if ($interval[0] =~ /^(\d+)/) {
9020: my $timelimit = $1;
9021: my $first_access;
9022: if ($type eq 'resource') {
9023: $first_access=&get_first_access($interval[1],$item);
9024: } elsif ($type eq 'map') {
9025: $first_access=&get_first_access($interval[1],undef,$item);
9026: } else {
9027: $first_access=&get_first_access($interval[1]);
9028: }
9029: if ($first_access) {
9030: my $timesup = $first_access+$timelimit;
9031: if ($timesup > $now) {
9032: my $activeblock;
9033: if ($type eq 'resource') {
9034: if (ref($navmap)) {
9035: my $res = $navmap->getBySymb($item);
9036: if ($res->answerable()) {
9037: $activeblock = 1;
9038: }
9039: }
9040: } elsif ($type eq 'map') {
9041: my $mapsymb = &symbread($mapname,1);
9042: if (($mapsymb) && (ref($navmap))) {
9043: my $mapres = $navmap->getBySymb($mapsymb);
9044: if (ref($mapres)) {
9045: my $first = $mapres->map_start();
9046: my $finish = $mapres->map_finish();
9047: my $it = $navmap->getIterator($first,$finish,undef,0,0);
9048: if (ref($it)) {
9049: my $res;
9050: while ($res = $it->next(undef,1)) {
9051: next unless (ref($res));
9052: my $symb = $res->symb();
9053: next if (($symb eq $mapsymb) || ($symb eq ''));
9054: @interval=&EXT("resource.0.interval",$symb);
9055: if ($interval[1] eq 'map') {
9056: if ($res->answerable()) {
9057: $activeblock = 1;
9058: last;
9059: }
9060: }
9061: }
9062: }
9063: }
9064: }
9065: }
9066: if ($activeblock) {
9067: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
9068: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
9069: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
9070: }
9071: }
9072: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
9073: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
9074: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
9075: }
9076: }
9077: }
9078: }
9079: }
9080: }
9081: }
9082: }
9083: }
9084: }
9085: return %blockers;
9086: }
9087:
9088: sub has_comm_blocking {
9089: my ($priv,$symb,$uri,$ignoresymbdb,$noenccheck,$blocked,$blocks) = @_;
9090: my @blockers;
9091: return unless ($env{'request.course.id'});
9092: return unless ($priv eq 'bre');
9093: return if ($env{'request.state'} eq 'construct');
9094: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
9095: if ($env{'request.course.sec'}) {
9096: $courseurl .= '/'.$env{'request.course.sec'};
9097: }
9098: return if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseurl} =~/evb\&([^\:]*)/);
9099: my %blockinfo;
9100: if (ref($blocks) eq 'HASH') {
9101: %blockinfo = &get_commblock_resources($blocks);
9102: } else {
9103: &load_all_blockers($env{'user.name'},$env{'user.domain'});
9104: %blockinfo = %cachedblockers;
9105: }
9106: return unless (keys(%blockinfo) > 0);
9107: my (%possibles,@symbs);
9108: if (!$symb) {
9109: $symb = &symbread($uri,1,1,1,\%possibles,$ignoresymbdb,$noenccheck);
9110: }
9111: if ($symb) {
9112: @symbs = ($symb);
9113: } elsif (keys(%possibles)) {
9114: @symbs = keys(%possibles);
9115: }
9116: my $noblock;
9117: foreach my $symb (@symbs) {
9118: last if ($noblock);
9119: my ($map,$resid,$resurl)=&decode_symb($symb);
9120: foreach my $block (keys(%blockinfo)) {
9121: if ($block =~ /^firstaccess____(.+)$/) {
9122: my $item = $1;
9123: unless ($blocked) {
9124: if (($item eq $map) || ($item eq $symb)) {
9125: $noblock = 1;
9126: last;
9127: }
9128: }
9129: }
9130: if (ref($blockinfo{$block}) eq 'HASH') {
9131: if (ref($blockinfo{$block}{'resources'}) eq 'HASH') {
9132: if ($blockinfo{$block}{'resources'}{$symb}) {
9133: unless (grep(/^\Q$block\E$/,@blockers)) {
9134: push(@blockers,$block);
9135: }
9136: }
9137: }
9138: if (ref($blockinfo{$block}{'maps'}) eq 'HASH') {
9139: if ($blockinfo{$block}{'maps'}{$map}) {
9140: unless (grep(/^\Q$block\E$/,@blockers)) {
9141: push(@blockers,$block);
9142: }
9143: }
9144: }
9145: }
9146: }
9147: }
9148: unless ($noblock) {
9149: return @blockers;
9150: }
9151: return;
9152: }
9153: }
9154:
9155: sub deeplink_check {
9156: my ($priv,$symb,$uri) = @_;
9157: return unless ($env{'request.course.id'});
9158: return unless ($priv eq 'bre');
9159: return if ($env{'request.state'} eq 'construct');
9160: return if ($env{'request.role.adv'});
9161: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
9162: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
9163: my (%possibles,@symbs);
9164: if (!$symb) {
9165: $symb = &symbread($uri,1,1,1,\%possibles);
9166: }
9167: if ($symb) {
9168: @symbs = ($symb);
9169: } elsif (keys(%possibles)) {
9170: @symbs = keys(%possibles);
9171: }
9172:
9173: my ($deeplink_symb,$allow);
9174: if ($env{'request.deeplink.login'}) {
9175: $deeplink_symb = &Apache::loncommon::deeplink_login_symb($cnum,$cdom);
9176: }
9177: foreach my $symb (@symbs) {
9178: last if ($allow);
9179: my $deeplink = &EXT("resource.0.deeplink",$symb);
9180: if ($deeplink eq '') {
9181: $allow = 1;
9182: } else {
9183: my ($state,$others,$listed,$scope,$protect) = split(/,/,$deeplink);
9184: if ($state ne 'only') {
9185: $allow = 1;
9186: } else {
9187: my $check_deeplink_entry;
9188: if ($protect ne 'none') {
9189: my ($acctype,$item) = split(/:/,$protect);
9190: if (($acctype eq 'ltic') && ($env{'user.linkprotector'})) {
9191: if (grep(/^\Q$item\Ec$/,split(/,/,$env{'user.linkprotector'}))) {
9192: $check_deeplink_entry = 1
9193: }
9194: } elsif (($acctype eq 'ltid') && ($env{'user.linkprotector'})) {
9195: if (grep(/^\Q$item\Ed$/,split(/,/,$env{'user.linkprotector'}))) {
9196: $check_deeplink_entry = 1;
9197: }
9198: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
9199: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
9200: $check_deeplink_entry = 1;
9201: }
9202: }
9203: }
9204: if (($protect eq 'none') || ($check_deeplink_entry)) {
9205: if ($scope eq 'res') {
9206: if ($symb eq $deeplink_symb) {
9207: $allow = 1;
9208: }
9209: } elsif (($scope eq 'map') || ($scope eq 'rec')) {
9210: my ($map_from_symb,$map_from_login);
9211: $map_from_symb = &deversion((&decode_symb($symb))[0]);
9212: if ($deeplink_symb =~ /\.(page|sequence)$/) {
9213: $map_from_login = &deversion((&decode_symb($deeplink_symb))[2]);
9214: } else {
9215: $map_from_login = &deversion((&decode_symb($deeplink_symb))[0]);
9216: }
9217: if (($map_from_symb) && ($map_from_login)) {
9218: if ($map_from_symb eq $map_from_login) {
9219: $allow = 1;
9220: } elsif ($scope eq 'rec') {
9221: my @recurseup = &get_map_hierarchy($map_from_symb,$env{'request.course.id'});
9222: if (grep(/^\Q$map_from_login\E$/,@recurseup)) {
9223: $allow = 1;
9224: }
9225: }
9226: }
9227: }
9228: }
9229: }
9230: }
9231: }
9232: return if ($allow);
9233: return 1;
9234: }
9235:
9236: # -------------------------------- Deversion and split uri into path an filename
9237:
9238: #
9239: # Removes the version from a URI and
9240: # splits it in to its filename and path to the filename.
9241: # Seems like File::Basename could have done this more clearly.
9242: # Parameters:
9243: # $uri - input URI
9244: # Returns:
9245: # Two element list consisting of
9246: # $pathname - the URI up to and excluding the trailing /
9247: # $filename - The part of the URI following the last /
9248: # NOTE:
9249: # Another realization of this is simply:
9250: # use File::Basename;
9251: # ...
9252: # $uri = shift;
9253: # $filename = basename($uri);
9254: # $path = dirname($uri);
9255: # return ($filename, $path);
9256: #
9257: # The implementation below is probably faster however.
9258: #
9259: sub split_uri_for_cond {
9260: my $uri=&deversion(&declutter(shift));
9261: my @uriparts=split(/\//,$uri);
9262: my $filename=pop(@uriparts);
9263: my $pathname=join('/',@uriparts);
9264: return ($pathname,$filename);
9265: }
9266: # --------------------------------------------------- Is a resource on the map?
9267:
9268: sub is_on_map {
9269: my ($pathname,$filename) = &split_uri_for_cond(shift);
9270: #Trying to find the conditional for the file
9271: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
9272: /\&\Q$filename\E\:([\d\|]+)\&/);
9273: if ($match) {
9274: return (1,$1);
9275: } else {
9276: return (0,0);
9277: }
9278: }
9279:
9280: # --------------------------------------------------------- Get symb from alias
9281:
9282: sub get_symb_from_alias {
9283: my $symb=shift;
9284: my ($map,$resid,$url)=&decode_symb($symb);
9285: # Already is a symb
9286: if ($url) { return $symb; }
9287: # Must be an alias
9288: my $aliassymb='';
9289: my %bighash;
9290: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9291: &GDBM_READER(),0640)) {
9292: my $rid=$bighash{'mapalias_'.$symb};
9293: if ($rid) {
9294: my ($mapid,$resid)=split(/\./,$rid);
9295: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
9296: $resid,$bighash{'src_'.$rid});
9297: }
9298: untie %bighash;
9299: }
9300: return $aliassymb;
9301: }
9302:
9303: # ----------------------------------------------------------------- Define Role
9304:
9305: sub definerole {
9306: if (allowed('mcr','/')) {
9307: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
9308: foreach my $role (split(':',$sysrole)) {
9309: my ($crole,$cqual)=split(/\&/,$role);
9310: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
9311: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
9312: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9313: return "refused:s:$crole&$cqual";
9314: }
9315: }
9316: }
9317: foreach my $role (split(':',$domrole)) {
9318: my ($crole,$cqual)=split(/\&/,$role);
9319: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
9320: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
9321: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
9322: return "refused:d:$crole&$cqual";
9323: }
9324: }
9325: }
9326: foreach my $role (split(':',$courole)) {
9327: my ($crole,$cqual)=split(/\&/,$role);
9328: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
9329: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
9330: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9331: return "refused:c:$crole&$cqual";
9332: }
9333: }
9334: }
9335: my $uhome;
9336: if (($uname ne '') && ($udom ne '')) {
9337: $uhome = &homeserver($uname,$udom);
9338: return $uhome if ($uhome eq 'no_host');
9339: } else {
9340: $uname = $env{'user.name'};
9341: $udom = $env{'user.domain'};
9342: $uhome = $env{'user.home'};
9343: }
9344: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9345: "$udom:$uname:rolesdef_$rolename=".
9346: escape($sysrole.'_'.$domrole.'_'.$courole);
9347: return reply($command,$uhome);
9348: } else {
9349: return 'refused';
9350: }
9351: }
9352:
9353: # ---------------- Make a metadata query against the network of library servers
9354:
9355: sub metadata_query {
9356: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
9357: my %rhash;
9358: my %libserv = &all_library();
9359: my @server_list = (defined($server_array) ? @$server_array
9360: : keys(%libserv) );
9361: for my $server (@server_list) {
9362: my $domains = '';
9363: if (ref($domains_hash) eq 'HASH') {
9364: $domains = $domains_hash->{$server};
9365: }
9366: unless ($custom or $customshow) {
9367: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
9368: $rhash{$server}=$reply;
9369: }
9370: else {
9371: my $reply=&reply("querysend:".&escape($query).':'.
9372: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
9373: $server);
9374: $rhash{$server}=$reply;
9375: }
9376: }
9377: return \%rhash;
9378: }
9379:
9380: # ----------------------------------------- Send log queries and wait for reply
9381:
9382: sub log_query {
9383: my ($uname,$udom,$query,%filters)=@_;
9384: my $uhome=&homeserver($uname,$udom);
9385: if ($uhome eq 'no_host') { return 'error: no_host'; }
9386: my $uhost=&hostname($uhome);
9387: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
9388: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
9389: $uhome);
9390: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
9391: return get_query_reply($queryid);
9392: }
9393:
9394: # -------------------------- Update MySQL table for portfolio file
9395:
9396: sub update_portfolio_table {
9397: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
9398: if ($group ne '') {
9399: $file_name =~s /^\Q$group\E//;
9400: }
9401: my $homeserver = &homeserver($uname,$udom);
9402: my $queryid=
9403: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
9404: ':'.&escape($file_name).':'.$action,$homeserver);
9405: my $reply = &get_query_reply($queryid);
9406: return $reply;
9407: }
9408:
9409: # -------------------------- Update MySQL allusers table
9410:
9411: sub update_allusers_table {
9412: my ($uname,$udom,$names) = @_;
9413: my $homeserver = &homeserver($uname,$udom);
9414: my $queryid=
9415: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9416: 'lastname='.&escape($names->{'lastname'}).'%%'.
9417: 'firstname='.&escape($names->{'firstname'}).'%%'.
9418: 'middlename='.&escape($names->{'middlename'}).'%%'.
9419: 'generation='.&escape($names->{'generation'}).'%%'.
9420: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9421: 'id='.&escape($names->{'id'}),$homeserver);
9422: return;
9423: }
9424:
9425: # ------- Request retrieval of institutional classlists for course(s)
9426:
9427: sub fetch_enrollment_query {
9428: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9429: my ($homeserver,$sleep,$loopmax);
9430: my $maxtries = 1;
9431: if ($context eq 'automated') {
9432: $homeserver = $perlvar{'lonHostID'};
9433: $sleep = 2;
9434: $loopmax = 100;
9435: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9436: } else {
9437: $homeserver = &homeserver($cnum,$dom);
9438: }
9439: my $host=&hostname($homeserver);
9440: my $cmd = '';
9441: foreach my $affiliate (keys(%{$affiliatesref})) {
9442: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9443: }
9444: $cmd =~ s/%%$//;
9445: $cmd = &escape($cmd);
9446: my $query = 'fetchenrollment';
9447: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9448: unless ($queryid=~/^\Q$host\E\_/) {
9449: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9450: return 'error: '.$queryid;
9451: }
9452: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9453: my $tries = 1;
9454: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9455: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9456: $tries ++;
9457: }
9458: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9459: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9460: } else {
9461: my @responses = split(/:/,$reply);
9462: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9463: foreach my $line (@responses) {
9464: my ($key,$value) = split(/=/,$line,2);
9465: $$replyref{$key} = $value;
9466: }
9467: } else {
9468: my $pathname = LONCAPA::tempdir();
9469: foreach my $line (@responses) {
9470: my ($key,$value) = split(/=/,$line);
9471: $$replyref{$key} = $value;
9472: if ($value > 0) {
9473: foreach my $item (@{$$affiliatesref{$key}}) {
9474: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9475: my $destname = $pathname.'/'.$filename;
9476: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9477: if ($xml_classlist =~ /^error/) {
9478: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9479: } else {
9480: if ( open(FILE,">",$destname) ) {
9481: print FILE &unescape($xml_classlist);
9482: close(FILE);
9483: } else {
9484: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9485: }
9486: }
9487: }
9488: }
9489: }
9490: }
9491: return 'ok';
9492: }
9493: return 'error';
9494: }
9495:
9496: sub get_query_reply {
9497: my ($queryid,$sleep,$loopmax) = @_;
9498: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9499: $sleep = 0.2;
9500: }
9501: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9502: $loopmax = 100;
9503: }
9504: my $replyfile=LONCAPA::tempdir().$queryid;
9505: my $reply='';
9506: for (1..$loopmax) {
9507: sleep($sleep);
9508: if (-e $replyfile.'.end') {
9509: if (open(my $fh,"<",$replyfile)) {
9510: $reply = join('',<$fh>);
9511: close($fh);
9512: } else { return 'error: reply_file_error'; }
9513: return &unescape($reply);
9514: }
9515: }
9516: return 'timeout:'.$queryid;
9517: }
9518:
9519: sub courselog_query {
9520: #
9521: # possible filters:
9522: # url: url or symb
9523: # username
9524: # domain
9525: # action: view, submit, grade
9526: # start: timestamp
9527: # end: timestamp
9528: #
9529: my (%filters)=@_;
9530: unless ($env{'request.course.id'}) { return 'no_course'; }
9531: if ($filters{'url'}) {
9532: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9533: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9534: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9535: }
9536: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9537: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9538: return &log_query($cname,$cdom,'courselog',%filters);
9539: }
9540:
9541: sub userlog_query {
9542: #
9543: # possible filters:
9544: # action: log check role
9545: # start: timestamp
9546: # end: timestamp
9547: #
9548: my ($uname,$udom,%filters)=@_;
9549: return &log_query($uname,$udom,'userlog',%filters);
9550: }
9551:
9552: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9553:
9554: sub auto_run {
9555: my ($cnum,$cdom) = @_;
9556: my $response = 0;
9557: my $settings;
9558: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9559: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9560: $settings = $domconfig{'autoenroll'};
9561: if ($settings->{'run'} eq '1') {
9562: $response = 1;
9563: }
9564: } else {
9565: my $homeserver;
9566: if (&is_course($cdom,$cnum)) {
9567: $homeserver = &homeserver($cnum,$cdom);
9568: } else {
9569: $homeserver = &domain($cdom,'primary');
9570: }
9571: if ($homeserver ne 'no_host') {
9572: $response = &reply('autorun:'.$cdom,$homeserver);
9573: }
9574: }
9575: return $response;
9576: }
9577:
9578: sub auto_get_sections {
9579: my ($cnum,$cdom,$inst_coursecode) = @_;
9580: my $homeserver;
9581: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9582: $homeserver = &homeserver($cnum,$cdom);
9583: }
9584: if (!defined($homeserver)) {
9585: if ($cdom =~ /^$match_domain$/) {
9586: $homeserver = &domain($cdom,'primary');
9587: }
9588: }
9589: my @secs;
9590: if (defined($homeserver)) {
9591: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9592: unless ($response eq 'refused') {
9593: @secs = split(/:/,$response);
9594: }
9595: }
9596: return @secs;
9597: }
9598:
9599: sub auto_new_course {
9600: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9601: my $homeserver = &homeserver($cnum,$cdom);
9602: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9603: return $response;
9604: }
9605:
9606: sub auto_validate_courseID {
9607: my ($cnum,$cdom,$inst_course_id) = @_;
9608: my $homeserver = &homeserver($cnum,$cdom);
9609: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9610: return $response;
9611: }
9612:
9613: sub auto_validate_instcode {
9614: my ($cnum,$cdom,$instcode,$owner) = @_;
9615: my ($homeserver,$response);
9616: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9617: $homeserver = &homeserver($cnum,$cdom);
9618: }
9619: if (!defined($homeserver)) {
9620: if ($cdom =~ /^$match_domain$/) {
9621: $homeserver = &domain($cdom,'primary');
9622: }
9623: }
9624: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9625: &escape($instcode).':'.&escape($owner),$homeserver));
9626: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9627: return ($outcome,$description,$defaultcredits);
9628: }
9629:
9630: sub auto_validate_inst_crosslist {
9631: my ($cnum,$cdom,$instcode,$inst_xlist,$coowner) = @_;
9632: my ($homeserver,$response);
9633: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9634: $homeserver = &homeserver($cnum,$cdom);
9635: }
9636: if (!defined($homeserver)) {
9637: if ($cdom =~ /^$match_domain$/) {
9638: $homeserver = &domain($cdom,'primary');
9639: }
9640: }
9641: unless (($homeserver eq '') || ($homeserver eq 'no_host')) {
9642: $response=&reply('autovalidateinstcrosslist:'.$cdom.':'.
9643: &escape($instcode).':'.&escape($inst_xlist).':'.
9644: &escape($coowner),$homeserver);
9645: }
9646: return $response;
9647: }
9648:
9649: sub auto_create_password {
9650: my ($cnum,$cdom,$authparam,$udom) = @_;
9651: my ($homeserver,$response);
9652: my $create_passwd = 0;
9653: my $authchk = '';
9654: if ($udom =~ /^$match_domain$/) {
9655: $homeserver = &domain($udom,'primary');
9656: }
9657: if ($homeserver eq '') {
9658: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9659: $homeserver = &homeserver($cnum,$cdom);
9660: }
9661: }
9662: if ($homeserver eq '') {
9663: $authchk = 'nodomain';
9664: } else {
9665: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
9666: if ($response eq 'refused') {
9667: $authchk = 'refused';
9668: } else {
9669: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
9670: }
9671: }
9672: return ($authparam,$create_passwd,$authchk);
9673: }
9674:
9675: sub auto_photo_permission {
9676: my ($cnum,$cdom,$students) = @_;
9677: my $homeserver = &homeserver($cnum,$cdom);
9678: my ($outcome,$perm_reqd,$conditions) =
9679: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
9680: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9681: return (undef,undef);
9682: }
9683: return ($outcome,$perm_reqd,$conditions);
9684: }
9685:
9686: sub auto_checkphotos {
9687: my ($uname,$udom,$pid) = @_;
9688: my $homeserver = &homeserver($uname,$udom);
9689: my ($result,$resulttype);
9690: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
9691: &escape($uname).':'.&escape($pid),
9692: $homeserver));
9693: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9694: return (undef,undef);
9695: }
9696: if ($outcome) {
9697: ($result,$resulttype) = split(/:/,$outcome);
9698: }
9699: return ($result,$resulttype);
9700: }
9701:
9702: sub auto_photochoice {
9703: my ($cnum,$cdom) = @_;
9704: my $homeserver = &homeserver($cnum,$cdom);
9705: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
9706: &escape($cdom),
9707: $homeserver)));
9708: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9709: return (undef,undef);
9710: }
9711: return ($update,$comment);
9712: }
9713:
9714: sub auto_photoupdate {
9715: my ($affiliatesref,$dom,$cnum,$photo) = @_;
9716: my $homeserver = &homeserver($cnum,$dom);
9717: my $host=&hostname($homeserver);
9718: my $cmd = '';
9719: my $maxtries = 1;
9720: foreach my $affiliate (keys(%{$affiliatesref})) {
9721: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9722: }
9723: $cmd =~ s/%%$//;
9724: $cmd = &escape($cmd);
9725: my $query = 'institutionalphotos';
9726: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
9727: unless ($queryid=~/^\Q$host\E\_/) {
9728: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
9729: return 'error: '.$queryid;
9730: }
9731: my $reply = &get_query_reply($queryid);
9732: my $tries = 1;
9733: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9734: $reply = &get_query_reply($queryid);
9735: $tries ++;
9736: }
9737: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9738: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9739: } else {
9740: my @responses = split(/:/,$reply);
9741: my $outcome = shift(@responses);
9742: foreach my $item (@responses) {
9743: my ($key,$value) = split(/=/,$item);
9744: $$photo{$key} = $value;
9745: }
9746: return $outcome;
9747: }
9748: return 'error';
9749: }
9750:
9751: sub auto_instcode_format {
9752: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
9753: $cat_order) = @_;
9754: my $courses = '';
9755: my @homeservers;
9756: if ($caller eq 'global') {
9757: my %servers = &get_servers($codedom,'library');
9758: foreach my $tryserver (keys(%servers)) {
9759: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9760: push(@homeservers,$tryserver);
9761: }
9762: }
9763: } elsif ($caller eq 'requests') {
9764: if ($codedom =~ /^$match_domain$/) {
9765: my $chome = &domain($codedom,'primary');
9766: unless ($chome eq 'no_host') {
9767: push(@homeservers,$chome);
9768: }
9769: }
9770: } else {
9771: push(@homeservers,&homeserver($caller,$codedom));
9772: }
9773: foreach my $code (keys(%{$instcodes})) {
9774: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
9775: }
9776: chop($courses);
9777: my $ok_response = 0;
9778: my $response;
9779: while (@homeservers > 0 && $ok_response == 0) {
9780: my $server = shift(@homeservers);
9781: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
9782: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
9783: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
9784: split(/:/,$response);
9785: %{$codes} = (%{$codes},&str2hash($codes_str));
9786: push(@{$codetitles},&str2array($codetitles_str));
9787: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
9788: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
9789: $ok_response = 1;
9790: }
9791: }
9792: if ($ok_response) {
9793: return 'ok';
9794: } else {
9795: return $response;
9796: }
9797: }
9798:
9799: sub auto_instcode_defaults {
9800: my ($domain,$returnhash,$code_order) = @_;
9801: my @homeservers;
9802:
9803: my %servers = &get_servers($domain,'library');
9804: foreach my $tryserver (keys(%servers)) {
9805: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9806: push(@homeservers,$tryserver);
9807: }
9808: }
9809:
9810: my $response;
9811: foreach my $server (@homeservers) {
9812: $response=&reply('autoinstcodedefaults:'.$domain,$server);
9813: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9814:
9815: foreach my $pair (split(/\&/,$response)) {
9816: my ($name,$value)=split(/\=/,$pair);
9817: if ($name eq 'code_order') {
9818: @{$code_order} = split(/\&/,&unescape($value));
9819: } else {
9820: $returnhash->{&unescape($name)}=&unescape($value);
9821: }
9822: }
9823: return 'ok';
9824: }
9825:
9826: return $response;
9827: }
9828:
9829: sub auto_possible_instcodes {
9830: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
9831: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
9832: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9833: return;
9834: }
9835: my (@homeservers,$uhome);
9836: if (defined(&domain($domain,'primary'))) {
9837: $uhome=&domain($domain,'primary');
9838: push(@homeservers,&domain($domain,'primary'));
9839: } else {
9840: my %servers = &get_servers($domain,'library');
9841: foreach my $tryserver (keys(%servers)) {
9842: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9843: push(@homeservers,$tryserver);
9844: }
9845: }
9846: }
9847: my $response;
9848: foreach my $server (@homeservers) {
9849: $response=&reply('autopossibleinstcodes:'.$domain,$server);
9850: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9851: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
9852: split(':',$response);
9853: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
9854: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
9855: foreach my $item (split('&',$cat_title)) {
9856: my ($name,$value)=split('=',$item);
9857: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
9858: }
9859: foreach my $item (split('&',$cat_order)) {
9860: my ($name,$value)=split('=',$item);
9861: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
9862: }
9863: return 'ok';
9864: }
9865: return $response;
9866: }
9867:
9868: sub auto_courserequest_checks {
9869: my ($dom) = @_;
9870: my ($homeserver,%validations);
9871: if ($dom =~ /^$match_domain$/) {
9872: $homeserver = &domain($dom,'primary');
9873: }
9874: unless ($homeserver eq 'no_host') {
9875: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9876: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9877: my @items = split(/&/,$response);
9878: foreach my $item (@items) {
9879: my ($key,$value) = split('=',$item);
9880: $validations{&unescape($key)} = &thaw_unescape($value);
9881: }
9882: }
9883: }
9884: return %validations;
9885: }
9886:
9887: sub auto_courserequest_validation {
9888: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9889: my ($homeserver,$response);
9890: if ($dom =~ /^$match_domain$/) {
9891: $homeserver = &domain($dom,'primary');
9892: }
9893: unless ($homeserver eq 'no_host') {
9894: my $customdata;
9895: if (ref($custominfo) eq 'HASH') {
9896: $customdata = &freeze_escape($custominfo);
9897: }
9898: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9899: ':'.&escape($crstype).':'.&escape($inststatuslist).
9900: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9901: $customdata,$homeserver));
9902: }
9903: return $response;
9904: }
9905:
9906: sub auto_validate_class_sec {
9907: my ($cdom,$cnum,$owners,$inst_class) = @_;
9908: my $homeserver = &homeserver($cnum,$cdom);
9909: my $ownerlist;
9910: if (ref($owners) eq 'ARRAY') {
9911: $ownerlist = join(',',@{$owners});
9912: } else {
9913: $ownerlist = $owners;
9914: }
9915: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9916: &escape($ownerlist).':'.$cdom,$homeserver);
9917: return $response;
9918: }
9919:
9920: sub auto_instsec_reformat {
9921: my ($cdom,$action,$instsecref) = @_;
9922: return unless(($action eq 'clutter') || ($action eq 'declutter'));
9923: my @homeservers;
9924: if (defined(&domain($cdom,'primary'))) {
9925: push(@homeservers,&domain($cdom,'primary'));
9926: } else {
9927: my %servers = &get_servers($cdom,'library');
9928: foreach my $tryserver (keys(%servers)) {
9929: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9930: push(@homeservers,$tryserver);
9931: }
9932: }
9933: }
9934: my $response;
9935: my %reformatted = %{$instsecref};
9936: foreach my $server (@homeservers) {
9937: if (ref($instsecref) eq 'HASH') {
9938: my $info = &freeze_escape($instsecref);
9939: my $response=&reply('autoinstsecreformat:'.$cdom.':'.
9940: $action.':'.$info,$server);
9941: next if ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/);
9942: my @items = split(/&/,$response);
9943: foreach my $item (@items) {
9944: my ($key,$value) = split(/=/,$item);
9945: $reformatted{&unescape($key)} = &thaw_unescape($value);
9946: }
9947: }
9948: }
9949: return %reformatted;
9950: }
9951:
9952: sub auto_validate_instclasses {
9953: my ($cdom,$cnum,$owners,$classesref) = @_;
9954: my ($homeserver,%validations);
9955: $homeserver = &homeserver($cnum,$cdom);
9956: unless ($homeserver eq 'no_host') {
9957: my $ownerlist;
9958: if (ref($owners) eq 'ARRAY') {
9959: $ownerlist = join(',',@{$owners});
9960: } else {
9961: $ownerlist = $owners;
9962: }
9963: if (ref($classesref) eq 'HASH') {
9964: my $classes = &freeze_escape($classesref);
9965: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9966: ':'.$cdom.':'.$classes,$homeserver);
9967: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9968: my @items = split(/&/,$response);
9969: foreach my $item (@items) {
9970: my ($key,$value) = split('=',$item);
9971: $validations{&unescape($key)} = &thaw_unescape($value);
9972: }
9973: }
9974: }
9975: }
9976: return %validations;
9977: }
9978:
9979: sub auto_crsreq_update {
9980: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9981: $code,$accessstart,$accessend,$inbound) = @_;
9982: my ($homeserver,%crsreqresponse);
9983: if ($cdom =~ /^$match_domain$/) {
9984: $homeserver = &domain($cdom,'primary');
9985: }
9986: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9987: my $info;
9988: if (ref($inbound) eq 'HASH') {
9989: $info = &freeze_escape($inbound);
9990: }
9991: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9992: ':'.&escape($action).':'.&escape($ownername).':'.
9993: &escape($ownerdomain).':'.&escape($fullname).':'.
9994: &escape($title).':'.&escape($code).':'.
9995: &escape($accessstart).':'.&escape($accessend).':'.$info,
9996: $homeserver);
9997: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9998: my @items = split(/&/,$response);
9999: foreach my $item (@items) {
10000: my ($key,$value) = split('=',$item);
10001: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
10002: }
10003: }
10004: }
10005: return \%crsreqresponse;
10006: }
10007:
10008: sub auto_export_grades {
10009: my ($cdom,$cnum,$inforef,$gradesref) = @_;
10010: my ($homeserver,%exportresponse);
10011: if ($cdom =~ /^$match_domain$/) {
10012: $homeserver = &domain($cdom,'primary');
10013: }
10014: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
10015: my $info;
10016: if (ref($inforef) eq 'HASH') {
10017: $info = &freeze_escape($inforef);
10018: }
10019: if (ref($gradesref) eq 'HASH') {
10020: my $grades = &freeze_escape($gradesref);
10021: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
10022: $info.':'.$grades,$homeserver);
10023: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
10024: my @items = split(/&/,$response);
10025: foreach my $item (@items) {
10026: my ($key,$value) = split('=',$item);
10027: $exportresponse{&unescape($key)} = &thaw_unescape($value);
10028: }
10029: }
10030: }
10031: }
10032: return \%exportresponse;
10033: }
10034:
10035: sub check_instcode_cloning {
10036: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
10037: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
10038: return;
10039: }
10040: my $canclone;
10041: if (@{$code_order} > 0) {
10042: my $instcoderegexp ='^';
10043: my @clonecodes = split(/\&/,$cloner);
10044: foreach my $item (@{$code_order}) {
10045: if (grep(/^\Q$item\E=/,@clonecodes)) {
10046: foreach my $pair (@clonecodes) {
10047: my ($key,$val) = split(/\=/,$pair,2);
10048: $val = &unescape($val);
10049: if ($key eq $item) {
10050: $instcoderegexp .= '('.$val.')';
10051: last;
10052: }
10053: }
10054: } else {
10055: $instcoderegexp .= $codedefaults->{$item};
10056: }
10057: }
10058: $instcoderegexp .= '$';
10059: my (@from,@to);
10060: eval {
10061: (@from) = ($clonefromcode =~ /$instcoderegexp/);
10062: (@to) = ($clonetocode =~ /$instcoderegexp/);
10063: };
10064: if ((@from > 0) && (@to > 0)) {
10065: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
10066: if (!@diffs) {
10067: $canclone = 1;
10068: }
10069: }
10070: }
10071: return $canclone;
10072: }
10073:
10074: sub default_instcode_cloning {
10075: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
10076: my (%codedefaults,@code_order,$canclone);
10077: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
10078: %codedefaults = %{$codedefaultsref};
10079: @code_order = @{$codeorderref};
10080: } elsif ($clonedom) {
10081: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
10082: }
10083: if (($domdefclone) && (@code_order)) {
10084: my @clonecodes = split(/\+/,$domdefclone);
10085: my $instcoderegexp ='^';
10086: foreach my $item (@code_order) {
10087: if (grep(/^\Q$item\E$/,@clonecodes)) {
10088: $instcoderegexp .= '('.$codedefaults{$item}.')';
10089: } else {
10090: $instcoderegexp .= $codedefaults{$item};
10091: }
10092: }
10093: $instcoderegexp .= '$';
10094: my (@from,@to);
10095: eval {
10096: (@from) = ($clonefromcode =~ /$instcoderegexp/);
10097: (@to) = ($clonetocode =~ /$instcoderegexp/);
10098: };
10099: if ((@from > 0) && (@to > 0)) {
10100: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
10101: if (!@diffs) {
10102: $canclone = 1;
10103: }
10104: }
10105: }
10106: return $canclone;
10107: }
10108:
10109: # ------------------------------------------------------- Course Group routines
10110:
10111: sub get_coursegroups {
10112: my ($cdom,$cnum,$group,$namespace) = @_;
10113: return(&dump($namespace,$cdom,$cnum,$group));
10114: }
10115:
10116: sub modify_coursegroup {
10117: my ($cdom,$cnum,$groupsettings) = @_;
10118: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
10119: }
10120:
10121: sub toggle_coursegroup_status {
10122: my ($cdom,$cnum,$group,$action) = @_;
10123: my ($from_namespace,$to_namespace);
10124: if ($action eq 'delete') {
10125: $from_namespace = 'coursegroups';
10126: $to_namespace = 'deleted_groups';
10127: } else {
10128: $from_namespace = 'deleted_groups';
10129: $to_namespace = 'coursegroups';
10130: }
10131: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
10132: if (my $tmp = &error(%curr_group)) {
10133: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
10134: return ('read error',$tmp);
10135: } else {
10136: my %savedsettings = %curr_group;
10137: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
10138: my $deloutcome;
10139: if ($result eq 'ok') {
10140: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
10141: } else {
10142: return ('write error',$result);
10143: }
10144: if ($deloutcome eq 'ok') {
10145: return 'ok';
10146: } else {
10147: return ('delete error',$deloutcome);
10148: }
10149: }
10150: }
10151:
10152: sub modify_group_roles {
10153: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
10154: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
10155: my $role = 'gr/'.&escape($userprivs);
10156: my ($uname,$udom) = split(/:/,$user);
10157: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
10158: if ($result eq 'ok') {
10159: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
10160: }
10161: return $result;
10162: }
10163:
10164: sub modify_coursegroup_membership {
10165: my ($cdom,$cnum,$membership) = @_;
10166: my $result = &put('groupmembership',$membership,$cdom,$cnum);
10167: return $result;
10168: }
10169:
10170: sub get_active_groups {
10171: my ($udom,$uname,$cdom,$cnum) = @_;
10172: my $now = time;
10173: my %groups = ();
10174: foreach my $key (keys(%env)) {
10175: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
10176: my ($start,$end) = split(/\./,$env{$key});
10177: if (($end!=0) && ($end<$now)) { next; }
10178: if (($start!=0) && ($start>$now)) { next; }
10179: if ($1 eq $cdom && $2 eq $cnum) {
10180: $groups{$3} = $env{$key} ;
10181: }
10182: }
10183: }
10184: return %groups;
10185: }
10186:
10187: sub get_group_membership {
10188: my ($cdom,$cnum,$group) = @_;
10189: return(&dump('groupmembership',$cdom,$cnum,$group));
10190: }
10191:
10192: sub get_users_groups {
10193: my ($udom,$uname,$courseid) = @_;
10194: my @usersgroups;
10195: my $cachetime=1800;
10196:
10197: my $hashid="$udom:$uname:$courseid";
10198: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
10199: if (defined($cached)) {
10200: @usersgroups = split(/:/,$grouplist);
10201: } else {
10202: $grouplist = '';
10203: my $courseurl = &courseid_to_courseurl($courseid);
10204: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
10205: my $access_end = $env{'course.'.$courseid.
10206: '.default_enrollment_end_date'};
10207: my $now = time;
10208: foreach my $key (keys(%roleshash)) {
10209: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
10210: my $group = $1;
10211: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
10212: my $start = $2;
10213: my $end = $1;
10214: if ($start == -1) { next; } # deleted from group
10215: if (($start!=0) && ($start>$now)) { next; }
10216: if (($end!=0) && ($end<$now)) {
10217: if ($access_end && $access_end < $now) {
10218: if ($access_end - $end < 86400) {
10219: push(@usersgroups,$group);
10220: }
10221: }
10222: next;
10223: }
10224: push(@usersgroups,$group);
10225: }
10226: }
10227: }
10228: @usersgroups = &sort_course_groups($courseid,@usersgroups);
10229: $grouplist = join(':',@usersgroups);
10230: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
10231: }
10232: return @usersgroups;
10233: }
10234:
10235: sub devalidate_getgroups_cache {
10236: my ($udom,$uname,$cdom,$cnum)=@_;
10237: my $courseid = $cdom.'_'.$cnum;
10238:
10239: my $hashid="$udom:$uname:$courseid";
10240: &devalidate_cache_new('getgroups',$hashid);
10241: }
10242:
10243: # ------------------------------------------------------------------ Plain Text
10244:
10245: sub plaintext {
10246: my ($short,$type,$cid,$forcedefault) = @_;
10247: if ($short =~ m{^cr/}) {
10248: return (split('/',$short))[-1];
10249: }
10250: if (!defined($cid)) {
10251: $cid = $env{'request.course.id'};
10252: }
10253: my %rolenames = (
10254: Course => 'std',
10255: Community => 'alt1',
10256: Placement => 'std',
10257: );
10258: if ($cid ne '') {
10259: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
10260: unless ($forcedefault) {
10261: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
10262: &Apache::lonlocal::mt_escape(\$roletext);
10263: return &Apache::lonlocal::mt($roletext);
10264: }
10265: }
10266: }
10267: if ((defined($type)) && (defined($rolenames{$type})) &&
10268: (defined($rolenames{$type})) &&
10269: (defined($prp{$short}{$rolenames{$type}}))) {
10270: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
10271: } elsif ($cid ne '') {
10272: my $crstype = $env{'course.'.$cid.'.type'};
10273: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
10274: (defined($prp{$short}{$rolenames{$crstype}}))) {
10275: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
10276: }
10277: }
10278: return &Apache::lonlocal::mt($prp{$short}{'std'});
10279: }
10280:
10281: # ----------------------------------------------------------------- Assign Role
10282:
10283: sub assignrole {
10284: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
10285: $context)=@_;
10286: my $mrole;
10287: if ($role =~ /^cr\//) {
10288: my $cwosec=$url;
10289: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10290: unless (&allowed('ccr',$cwosec)) {
10291: my $refused = 1;
10292: if ($context eq 'requestcourses') {
10293: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
10294: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
10295: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
10296: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10297: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10298: if ($crsenv{'internal.courseowner'} eq
10299: $env{'user.name'}.':'.$env{'user.domain'}) {
10300: $refused = '';
10301: }
10302: }
10303: }
10304: }
10305: }
10306: if ($refused) {
10307: &logthis('Refused custom assignrole: '.
10308: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
10309: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
10310: return 'refused';
10311: }
10312: }
10313: $mrole='cr';
10314: } elsif ($role =~ /^gr\//) {
10315: my $cwogrp=$url;
10316: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
10317: unless (&allowed('mdg',$cwogrp)) {
10318: &logthis('Refused group assignrole: '.
10319: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
10320: $env{'user.name'}.' at '.$env{'user.domain'});
10321: return 'refused';
10322: }
10323: $mrole='gr';
10324: } else {
10325: my $cwosec=$url;
10326: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10327: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
10328: my $refused;
10329: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
10330: if (!(&allowed('c'.$role,$url))) {
10331: $refused = 1;
10332: }
10333: } else {
10334: $refused = 1;
10335: }
10336: if ($refused) {
10337: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10338: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
10339: my %crsenv;
10340: if ($role eq 'cc' || $role eq 'co') {
10341: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10342: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
10343: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
10344: if ($crsenv{'internal.courseowner'} eq
10345: $env{'user.name'}.':'.$env{'user.domain'}) {
10346: $refused = '';
10347: }
10348: }
10349: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
10350: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
10351: if ($crsenv{'internal.courseowner'} eq
10352: $env{'user.name'}.':'.$env{'user.domain'}) {
10353: $refused = '';
10354: }
10355: }
10356: }
10357: }
10358: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
10359: if ($role eq 'st') {
10360: $refused = '';
10361: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
10362: $refused = '';
10363: }
10364: } elsif ($context eq 'requestcourses') {
10365: my @possroles = ('st','ta','ep','in','cc','co');
10366: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
10367: my $wrongcc;
10368: if ($cnum =~ /^$match_community$/) {
10369: $wrongcc = 1 if ($role eq 'cc');
10370: } else {
10371: $wrongcc = 1 if ($role eq 'co');
10372: }
10373: unless ($wrongcc) {
10374: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10375: if ($crsenv{'internal.courseowner'} eq
10376: $env{'user.name'}.':'.$env{'user.domain'}) {
10377: $refused = '';
10378: }
10379: }
10380: }
10381: } elsif ($context eq 'requestauthor') {
10382: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
10383: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
10384: if ($env{'environment.requestauthor'} eq 'automatic') {
10385: $refused = '';
10386: } else {
10387: my %domdefaults = &get_domain_defaults($udom);
10388: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
10389: my $checkbystatus;
10390: if ($env{'user.adv'}) {
10391: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
10392: if ($disposition eq 'automatic') {
10393: $refused = '';
10394: } elsif ($disposition eq '') {
10395: $checkbystatus = 1;
10396: }
10397: } else {
10398: $checkbystatus = 1;
10399: }
10400: if ($checkbystatus) {
10401: if ($env{'environment.inststatus'}) {
10402: my @inststatuses = split(/,/,$env{'environment.inststatus'});
10403: foreach my $type (@inststatuses) {
10404: if (($type ne '') &&
10405: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
10406: $refused = '';
10407: }
10408: }
10409: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
10410: $refused = '';
10411: }
10412: }
10413: }
10414: }
10415: }
10416: }
10417: if ($refused) {
10418: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
10419: ' '.$role.' '.$end.' '.$start.' by '.
10420: $env{'user.name'}.' at '.$env{'user.domain'});
10421: return 'refused';
10422: }
10423: }
10424: } elsif ($role eq 'au') {
10425: if ($url ne '/'.$udom.'/') {
10426: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
10427: ' to assign author role for '.$uname.':'.$udom.
10428: ' in domain: '.$url.' refused (wrong domain).');
10429: return 'refused';
10430: }
10431: }
10432: $mrole=$role;
10433: }
10434: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
10435: "$udom:$uname:$url".'_'."$mrole=$role";
10436: if ($end) { $command.='_'.$end; }
10437: if ($start) {
10438: if ($end) {
10439: $command.='_'.$start;
10440: } else {
10441: $command.='_0_'.$start;
10442: }
10443: }
10444: my $origstart = $start;
10445: my $origend = $end;
10446: my $delflag;
10447: # actually delete
10448: if ($deleteflag) {
10449: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
10450: # modify command to delete the role
10451: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
10452: "$udom:$uname:$url".'_'."$mrole";
10453: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
10454: # set start and finish to negative values for userrolelog
10455: $start=-1;
10456: $end=-1;
10457: $delflag = 1;
10458: }
10459: }
10460: # send command
10461: my $answer=&reply($command,&homeserver($uname,$udom));
10462: # log new user role if status is ok
10463: if ($answer eq 'ok') {
10464: &userrolelog($role,$uname,$udom,$url,$start,$end);
10465: if (($role eq 'cc') || ($role eq 'in') ||
10466: ($role eq 'ep') || ($role eq 'ad') ||
10467: ($role eq 'ta') || ($role eq 'st') ||
10468: ($role=~/^cr/) || ($role eq 'gr') ||
10469: ($role eq 'co')) {
10470: # for course roles, perform group memberships changes triggered by role change.
10471: unless ($role =~ /^gr/) {
10472: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10473: $origstart,$selfenroll,$context);
10474: }
10475: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10476: $selfenroll,$context);
10477: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10478: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10479: ($role eq 'da')) {
10480: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10481: $context);
10482: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10483: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10484: $context);
10485: }
10486: if ($role eq 'cc') {
10487: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10488: }
10489: }
10490: return $answer;
10491: }
10492:
10493: sub autoupdate_coowners {
10494: my ($url,$end,$start,$uname,$udom) = @_;
10495: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10496: if (($cdom ne '') && ($cnum ne '')) {
10497: my $now = time;
10498: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10499: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10500: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10501: my $instcode = $coursehash{'internal.coursecode'};
10502: my $xlists = $coursehash{'internal.crosslistings'};
10503: if ($instcode ne '') {
10504: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10505: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10506: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10507: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10508: unless ($result eq 'valid') {
10509: if ($xlists ne '') {
10510: foreach my $xlist (split(',',$xlists)) {
10511: my ($inst_crosslist,$lcsec) = split(':',$xlist);
10512: $result =
10513: &auto_validate_inst_crosslist($cnum,$cdom,$instcode,
10514: $inst_crosslist,$uname.':'.$udom);
10515: last if ($result eq 'valid');
10516: }
10517: }
10518: }
10519: if ($result eq 'valid') {
10520: if ($coursehash{'internal.co-owners'}) {
10521: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10522: push(@newcoowners,$coowner);
10523: }
10524: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10525: push(@newcoowners,$uname.':'.$udom);
10526: }
10527: @newcoowners = sort(@newcoowners);
10528: } else {
10529: push(@newcoowners,$uname.':'.$udom);
10530: }
10531: } elsif ($coursehash{'internal.co-owners'}) {
10532: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10533: unless ($coowner eq $uname.':'.$udom) {
10534: push(@newcoowners,$coowner);
10535: }
10536: }
10537: unless (@newcoowners > 0) {
10538: $delcoowners = 1;
10539: $coowners = '';
10540: }
10541: }
10542: if (@newcoowners || $delcoowners) {
10543: &store_coowners($cdom,$cnum,$coursehash{'home'},
10544: $delcoowners,@newcoowners);
10545: }
10546: }
10547: }
10548: }
10549: }
10550: }
10551: }
10552:
10553: sub store_coowners {
10554: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10555: my $cid = $cdom.'_'.$cnum;
10556: my ($coowners,$delresult,$putresult);
10557: if (@newcoowners) {
10558: $coowners = join(',',@newcoowners);
10559: my %coownershash = (
10560: 'internal.co-owners' => $coowners,
10561: );
10562: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
10563: if ($putresult eq 'ok') {
10564: if ($env{'course.'.$cid.'.num'} eq $cnum) {
10565: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
10566: }
10567: }
10568: }
10569: if ($delcoowners) {
10570: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
10571: if ($delresult eq 'ok') {
10572: if ($env{'course.'.$cid.'.internal.co-owners'}) {
10573: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
10574: }
10575: }
10576: }
10577: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
10578: my %crsinfo =
10579: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
10580: if (ref($crsinfo{$cid}) eq 'HASH') {
10581: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
10582: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
10583: }
10584: }
10585: }
10586:
10587: # -------------------------------------------------- Modify user authentication
10588: # Overrides without validation
10589:
10590: sub modifyuserauth {
10591: my ($udom,$uname,$umode,$upass)=@_;
10592: my $uhome=&homeserver($uname,$udom);
10593: my $allowed;
10594: if (&allowed('mau',$udom)) {
10595: $allowed = 1;
10596: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
10597: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
10598: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
10599: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10600: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10601: if (($cdom ne '') && ($cnum ne '')) {
10602: my $is_owner = &is_course_owner($cdom,$cnum);
10603: if ($is_owner) {
10604: $allowed = 1;
10605: }
10606: }
10607: }
10608: unless ($allowed) { return 'refused'; }
10609: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
10610: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10611: ' in domain '.$env{'request.role.domain'});
10612: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
10613: &escape($upass),$uhome);
10614: my $ip = &get_requestor_ip();
10615: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
10616: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
10617: '(Remote '.$ip.'): '.$reply);
10618: &log($udom,,$uname,$uhome,
10619: 'Authentication changed by '.$env{'user.domain'}.', '.
10620: $env{'user.name'}.', '.$umode.
10621: '(Remote '.$ip.'): '.$reply);
10622: unless ($reply eq 'ok') {
10623: &logthis('Authentication mode error: '.$reply);
10624: return 'error: '.$reply;
10625: }
10626: return 'ok';
10627: }
10628:
10629: # --------------------------------------------------------------- Modify a user
10630:
10631: sub modifyuser {
10632: my ($udom, $uname, $uid,
10633: $umode, $upass, $first,
10634: $middle, $last, $gene,
10635: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
10636: $udom= &LONCAPA::clean_domain($udom);
10637: $uname=&LONCAPA::clean_username($uname);
10638: my $showcandelete = 'none';
10639: if (ref($candelete) eq 'ARRAY') {
10640: if (@{$candelete} > 0) {
10641: $showcandelete = join(', ',@{$candelete});
10642: }
10643: }
10644: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
10645: $umode.', '.$first.', '.$middle.', '.
10646: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
10647: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
10648: ' desiredhome not specified').
10649: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10650: ' in domain '.$env{'request.role.domain'});
10651: my $uhome=&homeserver($uname,$udom,'true');
10652: my $newuser;
10653: if ($uhome eq 'no_host') {
10654: $newuser = 1;
10655: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
10656: ($umode eq 'lti')) {
10657: return 'error: more information needed to create new user';
10658: }
10659: }
10660: # ----------------------------------------------------------------- Create User
10661: if (($uhome eq 'no_host') &&
10662: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
10663: my $unhome='';
10664: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
10665: $unhome = $desiredhome;
10666: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
10667: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
10668: } else { # load balancing routine for determining $unhome
10669: my $loadm=10000000;
10670: my %servers = &get_servers($udom,'library');
10671: foreach my $tryserver (keys(%servers)) {
10672: my $answer=reply('load',$tryserver);
10673: if (($answer=~/\d+/) && ($answer<$loadm)) {
10674: $loadm=$answer;
10675: $unhome=$tryserver;
10676: }
10677: }
10678: }
10679: if (($unhome eq '') || ($unhome eq 'no_host')) {
10680: return 'error: unable to find a home server for '.$uname.
10681: ' in domain '.$udom;
10682: }
10683: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
10684: &escape($upass),$unhome);
10685: unless ($reply eq 'ok') {
10686: return 'error: '.$reply;
10687: }
10688: $uhome=&homeserver($uname,$udom,'true');
10689: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
10690: return 'error: unable verify users home machine.';
10691: }
10692: } # End of creation of new user
10693: # ---------------------------------------------------------------------- Add ID
10694: if ($uid) {
10695: $uid=~tr/A-Z/a-z/;
10696: my %uidhash=&idrget($udom,$uname);
10697: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
10698: && (!$forceid)) {
10699: unless ($uid eq $uidhash{$uname}) {
10700: return 'error: user id "'.$uid.'" does not match '.
10701: 'current user id "'.$uidhash{$uname}.'".';
10702: }
10703: } else {
10704: &idput($udom,{$uname => $uid},$uhome,'ids');
10705: }
10706: }
10707: # -------------------------------------------------------------- Add names, etc
10708: my @tmp=&get('environment',
10709: ['firstname','middlename','lastname','generation','id',
10710: 'permanentemail','inststatus'],
10711: $udom,$uname);
10712: my (%names,%oldnames);
10713: if ($tmp[0] =~ m/^error:.*/) {
10714: %names=();
10715: } else {
10716: %names = @tmp;
10717: %oldnames = %names;
10718: }
10719: #
10720: # If name, email and/or uid are blank (e.g., because an uploaded file
10721: # of users did not contain them), do not overwrite existing values
10722: # unless field is in $candelete array ref.
10723: #
10724:
10725: my @fields = ('firstname','middlename','lastname','generation',
10726: 'permanentemail','id');
10727: my %newvalues;
10728: if (ref($candelete) eq 'ARRAY') {
10729: foreach my $field (@fields) {
10730: if (grep(/^\Q$field\E$/,@{$candelete})) {
10731: if ($field eq 'firstname') {
10732: $names{$field} = $first;
10733: } elsif ($field eq 'middlename') {
10734: $names{$field} = $middle;
10735: } elsif ($field eq 'lastname') {
10736: $names{$field} = $last;
10737: } elsif ($field eq 'generation') {
10738: $names{$field} = $gene;
10739: } elsif ($field eq 'permanentemail') {
10740: $names{$field} = $email;
10741: } elsif ($field eq 'id') {
10742: $names{$field} = $uid;
10743: }
10744: }
10745: }
10746: }
10747: if ($first) { $names{'firstname'} = $first; }
10748: if (defined($middle)) { $names{'middlename'} = $middle; }
10749: if ($last) { $names{'lastname'} = $last; }
10750: if (defined($gene)) { $names{'generation'} = $gene; }
10751: if ($email) {
10752: $email=~s/[^\w\@\.\-\,]//gs;
10753: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
10754: }
10755: if ($uid) { $names{'id'} = $uid; }
10756: if (defined($inststatus)) {
10757: $names{'inststatus'} = '';
10758: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
10759: if (ref($usertypes) eq 'HASH') {
10760: my @okstatuses;
10761: foreach my $item (split(/:/,$inststatus)) {
10762: if (defined($usertypes->{$item})) {
10763: push(@okstatuses,$item);
10764: }
10765: }
10766: if (@okstatuses) {
10767: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
10768: }
10769: }
10770: }
10771: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
10772: $umode.', '.$first.', '.$middle.', '.
10773: $last.', '.$gene.', '.$email.', '.$inststatus;
10774: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
10775: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
10776: } else {
10777: $logmsg .= ' during self creation';
10778: }
10779: my $changed;
10780: if ($newuser) {
10781: $changed = 1;
10782: } else {
10783: foreach my $field (@fields) {
10784: if ($names{$field} ne $oldnames{$field}) {
10785: $changed = 1;
10786: last;
10787: }
10788: }
10789: }
10790: unless ($changed) {
10791: $logmsg = 'No changes in user information needed for: '.$logmsg;
10792: &logthis($logmsg);
10793: return 'ok';
10794: }
10795: my $reply = &put('environment', \%names, $udom,$uname);
10796: if ($reply ne 'ok') {
10797: return 'error: '.$reply;
10798: }
10799: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
10800: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
10801: }
10802: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
10803: &devalidate_cache_new('namescache',$uname.':'.$udom);
10804: $logmsg = 'Success modifying user '.$logmsg;
10805: &logthis($logmsg);
10806: return 'ok';
10807: }
10808:
10809: # -------------------------------------------------------------- Modify student
10810:
10811: sub modifystudent {
10812: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
10813: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
10814: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
10815: if (!$cid) {
10816: unless ($cid=$env{'request.course.id'}) {
10817: return 'not_in_class';
10818: }
10819: }
10820: # --------------------------------------------------------------- Make the user
10821: my $reply=&modifyuser
10822: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
10823: $desiredhome,$email,$inststatus);
10824: unless ($reply eq 'ok') { return $reply; }
10825: # This will cause &modify_student_enrollment to get the uid from the
10826: # student's environment
10827: $uid = undef if (!$forceid);
10828: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
10829: $gene,$usec,$end,$start,$type,$locktype,
10830: $cid,$selfenroll,$context,$credits,$instsec);
10831: return $reply;
10832: }
10833:
10834: sub modify_student_enrollment {
10835: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
10836: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
10837: my ($cdom,$cnum,$chome);
10838: if (!$cid) {
10839: unless ($cid=$env{'request.course.id'}) {
10840: return 'not_in_class';
10841: }
10842: $cdom=$env{'course.'.$cid.'.domain'};
10843: $cnum=$env{'course.'.$cid.'.num'};
10844: } else {
10845: ($cdom,$cnum)=split(/_/,$cid);
10846: }
10847: $chome=$env{'course.'.$cid.'.home'};
10848: if (!$chome) {
10849: $chome=&homeserver($cnum,$cdom);
10850: }
10851: if (!$chome) { return 'unknown_course'; }
10852: # Make sure the user exists
10853: my $uhome=&homeserver($uname,$udom);
10854: if (($uhome eq '') || ($uhome eq 'no_host')) {
10855: return 'error: no such user';
10856: }
10857: # Get student data if we were not given enough information
10858: if (!defined($first) || $first eq '' ||
10859: !defined($last) || $last eq '' ||
10860: !defined($uid) || $uid eq '' ||
10861: !defined($middle) || $middle eq '' ||
10862: !defined($gene) || $gene eq '') {
10863: # They did not supply us with enough data to enroll the student, so
10864: # we need to pick up more information.
10865: my %tmp = &get('environment',
10866: ['firstname','middlename','lastname', 'generation','id']
10867: ,$udom,$uname);
10868:
10869: #foreach my $key (keys(%tmp)) {
10870: # &logthis("key $key = ".$tmp{$key});
10871: #}
10872: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
10873: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
10874: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
10875: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
10876: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
10877: }
10878: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
10879: my $user = "$uname:$udom";
10880: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
10881: my $reply=cput('classlist',
10882: {$user =>
10883: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
10884: $cdom,$cnum);
10885: if (($reply eq 'ok') || ($reply eq 'delayed')) {
10886: &devalidate_getsection_cache($udom,$uname,$cid);
10887: } else {
10888: return 'error: '.$reply;
10889: }
10890: # Add student role to user
10891: my $uurl='/'.$cid;
10892: $uurl=~s/\_/\//g;
10893: if ($usec) {
10894: $uurl.='/'.$usec;
10895: }
10896: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
10897: $selfenroll,$context);
10898: if ($result ne 'ok') {
10899: if ($old_entry{$user} ne '') {
10900: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
10901: } else {
10902: $reply = &del('classlist',[$user],$cdom,$cnum);
10903: }
10904: }
10905: return $result;
10906: }
10907:
10908: sub format_name {
10909: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
10910: my $name;
10911: if ($first ne 'lastname') {
10912: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
10913: } else {
10914: if ($lastname=~/\S/) {
10915: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
10916: $name=~s/\s+,/,/;
10917: } else {
10918: $name.= $firstname.' '.$middlename.' '.$generation;
10919: }
10920: }
10921: $name=~s/^\s+//;
10922: $name=~s/\s+$//;
10923: $name=~s/\s+/ /g;
10924: return $name;
10925: }
10926:
10927: # ------------------------------------------------- Write to course preferences
10928:
10929: sub writecoursepref {
10930: my ($courseid,%prefs)=@_;
10931: $courseid=~s/^\///;
10932: $courseid=~s/\_/\//g;
10933: my ($cdomain,$cnum)=split(/\//,$courseid);
10934: my $chome=homeserver($cnum,$cdomain);
10935: if (($chome eq '') || ($chome eq 'no_host')) {
10936: return 'error: no such course';
10937: }
10938: my $cstring='';
10939: foreach my $pref (keys(%prefs)) {
10940: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10941: }
10942: $cstring=~s/\&$//;
10943: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10944: }
10945:
10946: # ---------------------------------------------------------- Make/modify course
10947:
10948: sub createcourse {
10949: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10950: $course_owner,$crstype,$cnum,$context,$category,$callercontext)=@_;
10951: $url=&declutter($url);
10952: my $cid='';
10953: if ($context eq 'requestcourses') {
10954: my $can_create = 0;
10955: my ($ownername,$ownerdom) = split(':',$course_owner);
10956: if ($udom eq $ownerdom) {
10957: my $reload;
10958: if (($callercontext eq 'auto') &&
10959: ($ownerdom eq $env{'user.domain'}) && ($ownername eq $env{'user.name'})) {
10960: $reload = 'reload';
10961: }
10962: if (&usertools_access($ownername,$ownerdom,$category,$reload,
10963: $context)) {
10964: $can_create = 1;
10965: }
10966: } else {
10967: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10968: $category);
10969: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10970: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10971: if (@curr > 0) {
10972: my @options = qw(approval validate autolimit);
10973: my $optregex = join('|',@options);
10974: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10975: $can_create = 1;
10976: }
10977: }
10978: }
10979: }
10980: if ($can_create) {
10981: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10982: unless (&allowed('ccc',$udom)) {
10983: return 'refused';
10984: }
10985: }
10986: } else {
10987: return 'refused';
10988: }
10989: } elsif (!&allowed('ccc',$udom)) {
10990: return 'refused';
10991: }
10992: # --------------------------------------------------------------- Get Unique ID
10993: my $uname;
10994: if ($cnum =~ /^$match_courseid$/) {
10995: my $chome=&homeserver($cnum,$udom,'true');
10996: if (($chome eq '') || ($chome eq 'no_host')) {
10997: $uname = $cnum;
10998: } else {
10999: $uname = &generate_coursenum($udom,$crstype);
11000: }
11001: } else {
11002: $uname = &generate_coursenum($udom,$crstype);
11003: }
11004: return $uname if ($uname =~ /^error/);
11005: # -------------------------------------------------- Check supplied server name
11006: if (!defined($course_server)) {
11007: if (defined(&domain($udom,'primary'))) {
11008: $course_server = &domain($udom,'primary');
11009: } else {
11010: $course_server = $env{'user.home'};
11011: }
11012: }
11013: my %host_servers =
11014: &Apache::lonnet::get_servers($udom,'library');
11015: unless ($host_servers{$course_server}) {
11016: return 'error: invalid home server for course: '.$course_server;
11017: }
11018: # ------------------------------------------------------------- Make the course
11019: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
11020: $course_server);
11021: unless ($reply eq 'ok') { return 'error: '.$reply; }
11022: my $uhome=&homeserver($uname,$udom,'true');
11023: if (($uhome eq '') || ($uhome eq 'no_host')) {
11024: return 'error: no such course';
11025: }
11026: # ----------------------------------------------------------------- Course made
11027: # log existence
11028: my $now = time;
11029: my $newcourse = {
11030: $udom.'_'.$uname => {
11031: description => $description,
11032: inst_code => $inst_code,
11033: owner => $course_owner,
11034: type => $crstype,
11035: creator => $env{'user.name'}.':'.
11036: $env{'user.domain'},
11037: created => $now,
11038: context => $context,
11039: },
11040: };
11041: &courseidput($udom,$newcourse,$uhome,'notime');
11042: # set toplevel url
11043: my $topurl=$url;
11044: unless ($nonstandard) {
11045: # ------------------------------------------ For standard courses, make top url
11046: my $mapurl=&clutter($url);
11047: if ($mapurl eq '/res/') { $mapurl=''; }
11048: $env{'form.initmap'}=(<<ENDINITMAP);
11049: <map>
11050: <resource id="1" type="start"></resource>
11051: <resource id="2" src="$mapurl"></resource>
11052: <resource id="3" type="finish"></resource>
11053: <link index="1" from="1" to="2"></link>
11054: <link index="2" from="2" to="3"></link>
11055: </map>
11056: ENDINITMAP
11057: $topurl=&declutter(
11058: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
11059: );
11060: }
11061: # ----------------------------------------------------------- Write preferences
11062: &writecoursepref($udom.'_'.$uname,
11063: ('description' => $description,
11064: 'url' => $topurl,
11065: 'internal.creator' => $env{'user.name'}.':'.
11066: $env{'user.domain'},
11067: 'internal.created' => $now,
11068: 'internal.creationcontext' => $context)
11069: );
11070: return '/'.$udom.'/'.$uname;
11071: }
11072:
11073: # ------------------------------------------------------------------- Create ID
11074: sub generate_coursenum {
11075: my ($udom,$crstype) = @_;
11076: my $domdesc = &domain($udom);
11077: return 'error: invalid domain' if ($domdesc eq '');
11078: my $first;
11079: if ($crstype eq 'Community') {
11080: $first = '0';
11081: } else {
11082: $first = int(1+rand(9));
11083: }
11084: my $uname=$first.
11085: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
11086: substr($$.time,0,5).unpack("H8",pack("I32",time)).
11087: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
11088: # ----------------------------------------------- Make sure that does not exist
11089: my $uhome=&homeserver($uname,$udom,'true');
11090: unless (($uhome eq '') || ($uhome eq 'no_host')) {
11091: if ($crstype eq 'Community') {
11092: $first = '0';
11093: } else {
11094: $first = int(1+rand(9));
11095: }
11096: $uname=$first.
11097: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
11098: substr($$.time,0,5).unpack("H8",pack("I32",time)).
11099: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
11100: $uhome=&homeserver($uname,$udom,'true');
11101: unless (($uhome eq '') || ($uhome eq 'no_host')) {
11102: return 'error: unable to generate unique course-ID';
11103: }
11104: }
11105: return $uname;
11106: }
11107:
11108: sub is_course {
11109: my ($cdom, $cnum) = scalar(@_) == 1 ?
11110: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
11111:
11112: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
11113: my $uhome=&homeserver($cnum,$cdom);
11114: my $iscourse;
11115: if (grep { $_ eq $uhome } current_machine_ids()) {
11116: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
11117: } else {
11118: my $hashid = $cdom.':'.$cnum;
11119: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
11120: unless (defined($cached)) {
11121: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
11122: $cnum,undef,undef,'.');
11123: $iscourse = 0;
11124: if (exists($courses{$cdom.'_'.$cnum})) {
11125: $iscourse = 1;
11126: }
11127: &do_cache_new('iscourse',$hashid,$iscourse,3600);
11128: }
11129: }
11130: return unless ($iscourse);
11131: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
11132: }
11133:
11134: sub store_userdata {
11135: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
11136: my $result;
11137: if ($datakey ne '') {
11138: if (ref($storehash) eq 'HASH') {
11139: if ($udom eq '' || $uname eq '') {
11140: $udom = $env{'user.domain'};
11141: $uname = $env{'user.name'};
11142: }
11143: my $uhome=&homeserver($uname,$udom);
11144: if (($uhome eq '') || ($uhome eq 'no_host')) {
11145: $result = 'error: no_host';
11146: } else {
11147: $storehash->{'ip'} = &get_requestor_ip();
11148: $storehash->{'host'} = $perlvar{'lonHostID'};
11149:
11150: my $namevalue='';
11151: foreach my $key (keys(%{$storehash})) {
11152: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
11153: }
11154: $namevalue=~s/\&$//;
11155: unless ($namespace eq 'courserequests') {
11156: $datakey = &escape($datakey);
11157: }
11158: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
11159: $namevalue,$uhome);
11160: }
11161: } else {
11162: $result = 'error: data to store was not a hash reference';
11163: }
11164: } else {
11165: $result= 'error: invalid requestkey';
11166: }
11167: return $result;
11168: }
11169:
11170: # ---------------------------------------------------------- Assign Custom Role
11171:
11172: sub assigncustomrole {
11173: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
11174: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
11175: $end,$start,$deleteflag,$selfenroll,$context);
11176: }
11177:
11178: # ----------------------------------------------------------------- Revoke Role
11179:
11180: sub revokerole {
11181: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
11182: my $now=time;
11183: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
11184: }
11185:
11186: # ---------------------------------------------------------- Revoke Custom Role
11187:
11188: sub revokecustomrole {
11189: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
11190: my $now=time;
11191: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
11192: $deleteflag,$selfenroll,$context);
11193: }
11194:
11195: # ------------------------------------------------------------ Disk usage
11196: sub diskusage {
11197: my ($udom,$uname,$directorypath,$getpropath)=@_;
11198: $directorypath =~ s/\/$//;
11199: my $listing=&reply('du2:'.&escape($directorypath).':'
11200: .&escape($getpropath).':'.&escape($uname).':'
11201: .&escape($udom),homeserver($uname,$udom));
11202: if ($listing eq 'unknown_cmd') {
11203: if ($getpropath) {
11204: $directorypath = &propath($udom,$uname).'/'.$directorypath;
11205: }
11206: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
11207: }
11208: return $listing;
11209: }
11210:
11211: sub is_locked {
11212: my ($file_name, $domain, $user, $which) = @_;
11213: my @check;
11214: my $is_locked;
11215: push (@check,$file_name);
11216: my %locked = &get('file_permissions',\@check,
11217: $env{'user.domain'},$env{'user.name'});
11218: my ($tmp)=keys(%locked);
11219: if ($tmp=~/^error:/) { undef(%locked); }
11220:
11221: if (ref($locked{$file_name}) eq 'ARRAY') {
11222: $is_locked = 'false';
11223: foreach my $entry (@{$locked{$file_name}}) {
11224: if (ref($entry) eq 'ARRAY') {
11225: $is_locked = 'true';
11226: if (ref($which) eq 'ARRAY') {
11227: push(@{$which},$entry);
11228: } else {
11229: last;
11230: }
11231: }
11232: }
11233: } else {
11234: $is_locked = 'false';
11235: }
11236: return $is_locked;
11237: }
11238:
11239: sub declutter_portfile {
11240: my ($file) = @_;
11241: $file =~ s{^(/portfolio/|portfolio/)}{/};
11242: return $file;
11243: }
11244:
11245: # ------------------------------------------------------------- Mark as Read Only
11246:
11247: sub mark_as_readonly {
11248: my ($domain,$user,$files,$what) = @_;
11249: my %current_permissions = &dump('file_permissions',$domain,$user);
11250: my ($tmp)=keys(%current_permissions);
11251: if ($tmp=~/^error:/) { undef(%current_permissions); }
11252: foreach my $file (@{$files}) {
11253: $file = &declutter_portfile($file);
11254: push(@{$current_permissions{$file}},$what);
11255: }
11256: &put('file_permissions',\%current_permissions,$domain,$user);
11257: return;
11258: }
11259:
11260: # ------------------------------------------------------------Save Selected Files
11261:
11262: sub save_selected_files {
11263: my ($user, $path, @files) = @_;
11264: my $filename = $user."savedfiles";
11265: my @other_files = &files_not_in_path($user, $path);
11266: open (OUT,'>',LONCAPA::tempdir().$filename);
11267: foreach my $file (@files) {
11268: print (OUT $env{'form.currentpath'}.$file."\n");
11269: }
11270: foreach my $file (@other_files) {
11271: print (OUT $file."\n");
11272: }
11273: close (OUT);
11274: return 'ok';
11275: }
11276:
11277: sub clear_selected_files {
11278: my ($user) = @_;
11279: my $filename = $user."savedfiles";
11280: open (OUT,'>',LONCAPA::tempdir().$filename);
11281: print (OUT undef);
11282: close (OUT);
11283: return ("ok");
11284: }
11285:
11286: sub files_in_path {
11287: my ($user, $path) = @_;
11288: my $filename = $user."savedfiles";
11289: my %return_files;
11290: open (IN,'<',LONCAPA::tempdir().$filename);
11291: while (my $line_in = <IN>) {
11292: chomp ($line_in);
11293: my @paths_and_file = split (m!/!, $line_in);
11294: my $file_part = pop (@paths_and_file);
11295: my $path_part = join ('/', @paths_and_file);
11296: $path_part.='/';
11297: my $path_and_file = $path_part.$file_part;
11298: if ($path_part eq $path) {
11299: $return_files{$file_part}= 'selected';
11300: }
11301: }
11302: close (IN);
11303: return (\%return_files);
11304: }
11305:
11306: # called in portfolio select mode, to show files selected NOT in current directory
11307: sub files_not_in_path {
11308: my ($user, $path) = @_;
11309: my $filename = $user."savedfiles";
11310: my @return_files;
11311: my $path_part;
11312: open(IN, '<',LONCAPA::tempdir().$filename);
11313: while (my $line = <IN>) {
11314: #ok, I know it's clunky, but I want it to work
11315: my @paths_and_file = split(m|/|, $line);
11316: my $file_part = pop(@paths_and_file);
11317: chomp($file_part);
11318: my $path_part = join('/', @paths_and_file);
11319: $path_part .= '/';
11320: my $path_and_file = $path_part.$file_part;
11321: if ($path_part ne $path) {
11322: push(@return_files, ($path_and_file));
11323: }
11324: }
11325: close(OUT);
11326: return (@return_files);
11327: }
11328:
11329: #------------------------------Submitted/Handedback Portfolio Files Versioning
11330:
11331: sub portfiles_versioning {
11332: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
11333: my $portfolio_root = '/userfiles/portfolio';
11334: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
11335: foreach my $file (@{$portfiles}) {
11336: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
11337: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
11338: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
11339: my $getpropath = 1;
11340: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
11341: $stu_name,$getpropath);
11342: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
11343: my $new_answer =
11344: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
11345: if ($new_answer ne 'problem getting file') {
11346: push(@{$versioned_portfiles}, $directory.$new_answer);
11347: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
11348: [$symb,$env{'request.course.id'},'graded']);
11349: }
11350: }
11351: }
11352:
11353: sub get_next_version {
11354: my ($answer_name, $answer_ext, $dir_list) = @_;
11355: my $version;
11356: if (ref($dir_list) eq 'ARRAY') {
11357: foreach my $row (@{$dir_list}) {
11358: my ($file) = split(/\&/,$row,2);
11359: my ($file_name,$file_version,$file_ext) =
11360: &file_name_version_ext($file);
11361: if (($file_name eq $answer_name) &&
11362: ($file_ext eq $answer_ext)) {
11363: # gets here if filename and extension match,
11364: # regardless of version
11365: if ($file_version ne '') {
11366: # a versioned file is found so save it for later
11367: if ($file_version > $version) {
11368: $version = $file_version;
11369: }
11370: }
11371: }
11372: }
11373: }
11374: $version ++;
11375: return($version);
11376: }
11377:
11378: sub version_selected_portfile {
11379: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
11380: my ($answer_name,$answer_ver,$answer_ext) =
11381: &file_name_version_ext($file_name);
11382: my $new_answer;
11383: $env{'form.copy'} =
11384: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
11385: if($env{'form.copy'} eq '-1') {
11386: $new_answer = 'problem getting file';
11387: } else {
11388: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
11389: my $copy_result =
11390: &finishuserfileupload($stu_name,$domain,'copy',
11391: '/portfolio'.$directory.$new_answer);
11392: }
11393: undef($env{'form.copy'});
11394: return ($new_answer);
11395: }
11396:
11397: sub file_name_version_ext {
11398: my ($file)=@_;
11399: my @file_parts = split(/\./, $file);
11400: my ($name,$version,$ext);
11401: if (@file_parts > 1) {
11402: $ext=pop(@file_parts);
11403: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
11404: $version=pop(@file_parts);
11405: }
11406: $name=join('.',@file_parts);
11407: } else {
11408: $name=join('.',@file_parts);
11409: }
11410: return($name,$version,$ext);
11411: }
11412:
11413: #----------------------------------------------Get portfolio file permissions
11414:
11415: sub get_portfile_permissions {
11416: my ($domain,$user) = @_;
11417: my %current_permissions = &dump('file_permissions',$domain,$user);
11418: my ($tmp)=keys(%current_permissions);
11419: if ($tmp=~/^error:/) { undef(%current_permissions); }
11420: return \%current_permissions;
11421: }
11422:
11423: #---------------------------------------------Get portfolio file access controls
11424:
11425: sub get_access_controls {
11426: my ($current_permissions,$group,$file) = @_;
11427: my %access;
11428: my $real_file = $file;
11429: $file =~ s/\.meta$//;
11430: if (defined($file)) {
11431: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
11432: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
11433: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
11434: }
11435: }
11436: } else {
11437: foreach my $key (keys(%{$current_permissions})) {
11438: if ($key =~ /\0accesscontrol$/) {
11439: if (defined($group)) {
11440: if ($key !~ m-^\Q$group\E/-) {
11441: next;
11442: }
11443: }
11444: my ($fullpath) = split(/\0/,$key);
11445: if (ref($$current_permissions{$key}) eq 'HASH') {
11446: foreach my $control (keys(%{$$current_permissions{$key}})) {
11447: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
11448: }
11449: }
11450: }
11451: }
11452: }
11453: return %access;
11454: }
11455:
11456: sub modify_access_controls {
11457: my ($file_name,$changes,$domain,$user)=@_;
11458: my ($outcome,$deloutcome);
11459: my %store_permissions;
11460: my %new_values;
11461: my %new_control;
11462: my %translation;
11463: my @deletions = ();
11464: my $now = time;
11465: if (exists($$changes{'activate'})) {
11466: if (ref($$changes{'activate'}) eq 'HASH') {
11467: my @newitems = sort(keys(%{$$changes{'activate'}}));
11468: my $numnew = scalar(@newitems);
11469: for (my $i=0; $i<$numnew; $i++) {
11470: my $newkey = $newitems[$i];
11471: my $newid = &Apache::loncommon::get_cgi_id();
11472: if ($newkey =~ /^\d+:/) {
11473: $newkey =~ s/^(\d+)/$newid/;
11474: $translation{$1} = $newid;
11475: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
11476: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
11477: $translation{$1} = $newid;
11478: }
11479: $new_values{$file_name."\0".$newkey} =
11480: $$changes{'activate'}{$newitems[$i]};
11481: $new_control{$newkey} = $now;
11482: }
11483: }
11484: }
11485: my %todelete;
11486: my %changed_items;
11487: foreach my $action ('delete','update') {
11488: if (exists($$changes{$action})) {
11489: if (ref($$changes{$action}) eq 'HASH') {
11490: foreach my $key (keys(%{$$changes{$action}})) {
11491: my ($itemnum) = ($key =~ /^([^:]+):/);
11492: if ($action eq 'delete') {
11493: $todelete{$itemnum} = 1;
11494: } else {
11495: $changed_items{$itemnum} = $key;
11496: }
11497: }
11498: }
11499: }
11500: }
11501: # get lock on access controls for file.
11502: my $lockhash = {
11503: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11504: ':'.$env{'user.domain'},
11505: };
11506: my $tries = 0;
11507: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11508:
11509: while (($gotlock ne 'ok') && $tries < 10) {
11510: $tries ++;
11511: sleep(0.1);
11512: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11513: }
11514: if ($gotlock eq 'ok') {
11515: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11516: my ($tmp)=keys(%curr_permissions);
11517: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11518: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11519: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11520: if (ref($curr_controls) eq 'HASH') {
11521: foreach my $control_item (keys(%{$curr_controls})) {
11522: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11523: if (defined($todelete{$itemnum})) {
11524: push(@deletions,$file_name."\0".$control_item);
11525: } else {
11526: if (defined($changed_items{$itemnum})) {
11527: $new_control{$changed_items{$itemnum}} = $now;
11528: push(@deletions,$file_name."\0".$control_item);
11529: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11530: } else {
11531: $new_control{$control_item} = $$curr_controls{$control_item};
11532: }
11533: }
11534: }
11535: }
11536: }
11537: my ($group);
11538: if (&is_course($domain,$user)) {
11539: ($group,my $file) = split(/\//,$file_name,2);
11540: }
11541: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11542: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11543: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11544: # remove lock
11545: my @del_lock = ($file_name."\0".'locked_access_records');
11546: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11547: my $sqlresult =
11548: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11549: $group);
11550: } else {
11551: $outcome = "error: could not obtain lockfile\n";
11552: }
11553: return ($outcome,$deloutcome,\%new_values,\%translation);
11554: }
11555:
11556: sub make_public_indefinitely {
11557: my (@requrl) = @_;
11558: return &automated_portfile_access('public',\@requrl);
11559: }
11560:
11561: sub automated_portfile_access {
11562: my ($accesstype,$addsref,$delsref,$info) = @_;
11563: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
11564: return 'invalid';
11565: }
11566: my %urls;
11567: if (ref($addsref) eq 'ARRAY') {
11568: foreach my $requrl (@{$addsref}) {
11569: if (&is_portfolio_url($requrl)) {
11570: unless (exists($urls{$requrl})) {
11571: $urls{$requrl} = 'add';
11572: }
11573: }
11574: }
11575: }
11576: if (ref($delsref) eq 'ARRAY') {
11577: foreach my $requrl (@{$delsref}) {
11578: if (&is_portfolio_url($requrl)) {
11579: unless (exists($urls{$requrl})) {
11580: $urls{$requrl} = 'delete';
11581: }
11582: }
11583: }
11584: }
11585: unless (keys(%urls)) {
11586: return 'invalid';
11587: }
11588: my $ip;
11589: if ($accesstype eq 'ip') {
11590: if (ref($info) eq 'HASH') {
11591: if ($info->{'ip'} ne '') {
11592: $ip = $info->{'ip'};
11593: }
11594: }
11595: if ($ip eq '') {
11596: return 'invalid';
11597: }
11598: }
11599: my $errors;
11600: my $now = time;
11601: my %current_perms;
11602: foreach my $requrl (sort(keys(%urls))) {
11603: my $action;
11604: if ($urls{$requrl} eq 'add') {
11605: $action = 'activate';
11606: } else {
11607: $action = 'none';
11608: }
11609: my $aclnum = 0;
11610: my (undef,$udom,$unum,$file_name,$group) =
11611: &parse_portfolio_url($requrl);
11612: unless (exists($current_perms{$unum.':'.$udom})) {
11613: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
11614: }
11615: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
11616: $group,$file_name);
11617: foreach my $key (keys(%{$access_controls{$file_name}})) {
11618: my ($num,$scope,$end,$start) =
11619: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
11620: if ($scope eq $accesstype) {
11621: if (($start <= $now) && ($end == 0)) {
11622: if ($accesstype eq 'ip') {
11623: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
11624: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
11625: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
11626: if ($urls{$requrl} eq 'add') {
11627: $action = 'none';
11628: last;
11629: } else {
11630: $action = 'delete';
11631: $aclnum = $num;
11632: last;
11633: }
11634: }
11635: }
11636: }
11637: } elsif ($accesstype eq 'public') {
11638: if ($urls{$requrl} eq 'add') {
11639: $action = 'none';
11640: last;
11641: } else {
11642: $action = 'delete';
11643: $aclnum = $num;
11644: last;
11645: }
11646: }
11647: } elsif ($accesstype eq 'public') {
11648: $action = 'update';
11649: $aclnum = $num;
11650: last;
11651: }
11652: }
11653: }
11654: if ($action eq 'none') {
11655: next;
11656: } else {
11657: my %changes;
11658: my $newend = 0;
11659: my $newstart = $now;
11660: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
11661: $changes{$action}{$newkey} = {
11662: type => $accesstype,
11663: time => {
11664: start => $newstart,
11665: end => $newend,
11666: },
11667: };
11668: if ($accesstype eq 'ip') {
11669: $changes{$action}{$newkey}{'ip'} = [$ip];
11670: }
11671: my ($outcome,$deloutcome,$new_values,$translation) =
11672: &modify_access_controls($file_name,\%changes,$udom,$unum);
11673: unless ($outcome eq 'ok') {
11674: $errors .= $outcome.' ';
11675: }
11676: }
11677: }
11678: if ($errors) {
11679: $errors =~ s/\s$//;
11680: return $errors;
11681: } else {
11682: return 'ok';
11683: }
11684: }
11685:
11686: #------------------------------------------------------Get Marked as Read Only
11687:
11688: sub get_marked_as_readonly {
11689: my ($domain,$user,$what,$group) = @_;
11690: my $current_permissions = &get_portfile_permissions($domain,$user);
11691: my @readonly_files;
11692: my $cmp1=$what;
11693: if (ref($what)) { $cmp1=join('',@{$what}) };
11694: while (my ($file_name,$value) = each(%{$current_permissions})) {
11695: if (defined($group)) {
11696: if ($file_name !~ m-^\Q$group\E/-) {
11697: next;
11698: }
11699: }
11700: if (ref($value) eq "ARRAY"){
11701: foreach my $stored_what (@{$value}) {
11702: my $cmp2=$stored_what;
11703: if (ref($stored_what) eq 'ARRAY') {
11704: $cmp2=join('',@{$stored_what});
11705: }
11706: if ($cmp1 eq $cmp2) {
11707: push(@readonly_files, $file_name);
11708: last;
11709: } elsif (!defined($what)) {
11710: push(@readonly_files, $file_name);
11711: last;
11712: }
11713: }
11714: }
11715: }
11716: return @readonly_files;
11717: }
11718: #-----------------------------------------------------------Get Marked as Read Only Hash
11719:
11720: sub get_marked_as_readonly_hash {
11721: my ($current_permissions,$group,$what) = @_;
11722: my %readonly_files;
11723: while (my ($file_name,$value) = each(%{$current_permissions})) {
11724: if (defined($group)) {
11725: if ($file_name !~ m-^\Q$group\E/-) {
11726: next;
11727: }
11728: }
11729: if (ref($value) eq "ARRAY"){
11730: foreach my $stored_what (@{$value}) {
11731: if (ref($stored_what) eq 'ARRAY') {
11732: foreach my $lock_descriptor(@{$stored_what}) {
11733: if ($lock_descriptor eq 'graded') {
11734: $readonly_files{$file_name} = 'graded';
11735: } elsif ($lock_descriptor eq 'handback') {
11736: $readonly_files{$file_name} = 'handback';
11737: } else {
11738: if (!exists($readonly_files{$file_name})) {
11739: $readonly_files{$file_name} = 'locked';
11740: }
11741: }
11742: }
11743: }
11744: }
11745: }
11746: }
11747: return %readonly_files;
11748: }
11749: # ------------------------------------------------------------ Unmark as Read Only
11750:
11751: sub unmark_as_readonly {
11752: # unmarks $file_name (if $file_name is defined), or all files locked by $what
11753: # for portfolio submissions, $what contains [$symb,$crsid]
11754: my ($domain,$user,$what,$file_name,$group) = @_;
11755: $file_name = &declutter_portfile($file_name);
11756: my $symb_crs = $what;
11757: if (ref($what)) { $symb_crs=join('',@$what); }
11758: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
11759: my ($tmp)=keys(%current_permissions);
11760: if ($tmp=~/^error:/) { undef(%current_permissions); }
11761: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
11762: foreach my $file (@readonly_files) {
11763: my $clean_file = &declutter_portfile($file);
11764: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
11765: my $current_locks = $current_permissions{$file};
11766: my @new_locks;
11767: my @del_keys;
11768: if (ref($current_locks) eq "ARRAY"){
11769: foreach my $locker (@{$current_locks}) {
11770: my $compare=$locker;
11771: if (ref($locker) eq 'ARRAY') {
11772: $compare=join('',@{$locker});
11773: if ($compare ne $symb_crs) {
11774: push(@new_locks, $locker);
11775: }
11776: }
11777: }
11778: if (scalar(@new_locks) > 0) {
11779: $current_permissions{$file} = \@new_locks;
11780: } else {
11781: push(@del_keys, $file);
11782: &del('file_permissions',\@del_keys, $domain, $user);
11783: delete($current_permissions{$file});
11784: }
11785: }
11786: }
11787: &put('file_permissions',\%current_permissions,$domain,$user);
11788: return;
11789: }
11790:
11791: # ------------------------------------------------------------ Directory lister
11792:
11793: sub dirlist {
11794: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
11795: $uri=~s/^\///;
11796: $uri=~s/\/$//;
11797: my ($udom, $uname);
11798: if ($getuserdir) {
11799: $udom = $userdomain;
11800: $uname = $username;
11801: } else {
11802: (undef,$udom,$uname)=split(/\//,$uri);
11803: if(defined($userdomain)) {
11804: $udom = $userdomain;
11805: }
11806: if(defined($username)) {
11807: $uname = $username;
11808: }
11809: }
11810: my ($dirRoot,$listing,@listing_results);
11811:
11812: $dirRoot = $perlvar{'lonDocRoot'};
11813: if (defined($getpropath)) {
11814: $dirRoot = &propath($udom,$uname);
11815: $dirRoot =~ s/\/$//;
11816: } elsif (defined($getuserdir)) {
11817: my $subdir=$uname.'__';
11818: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
11819: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
11820: ."/$udom/$subdir/$uname";
11821: } elsif (defined($alternateRoot)) {
11822: $dirRoot = $alternateRoot;
11823: }
11824:
11825: if($udom) {
11826: if($uname) {
11827: my $uhome = &homeserver($uname,$udom);
11828: if ($uhome eq 'no_host') {
11829: return ([],'no_host');
11830: }
11831: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
11832: .$getuserdir.':'.&escape($dirRoot)
11833: .':'.&escape($uname).':'.&escape($udom),$uhome);
11834: if ($listing eq 'unknown_cmd') {
11835: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
11836: } else {
11837: @listing_results = map { &unescape($_); } split(/:/,$listing);
11838: }
11839: if ($listing eq 'unknown_cmd') {
11840: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
11841: @listing_results = split(/:/,$listing);
11842: } else {
11843: @listing_results = map { &unescape($_); } split(/:/,$listing);
11844: }
11845: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11846: ($listing eq 'rejected') || ($listing eq 'refused') ||
11847: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11848: return ([],$listing);
11849: } else {
11850: return (\@listing_results);
11851: }
11852: } elsif(!$alternateRoot) {
11853: my (%allusers,%listerror);
11854: my %servers = &get_servers($udom,'library');
11855: foreach my $tryserver (keys(%servers)) {
11856: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
11857: &escape($udom),$tryserver);
11858: if ($listing eq 'unknown_cmd') {
11859: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
11860: $udom, $tryserver);
11861: } else {
11862: @listing_results = map { &unescape($_); } split(/:/,$listing);
11863: }
11864: if ($listing eq 'unknown_cmd') {
11865: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
11866: $udom, $tryserver);
11867: @listing_results = split(/:/,$listing);
11868: } else {
11869: @listing_results =
11870: map { &unescape($_); } split(/:/,$listing);
11871: }
11872: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11873: ($listing eq 'rejected') || ($listing eq 'refused') ||
11874: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11875: $listerror{$tryserver} = $listing;
11876: } else {
11877: foreach my $line (@listing_results) {
11878: my ($entry) = split(/&/,$line,2);
11879: $allusers{$entry} = 1;
11880: }
11881: }
11882: }
11883: my @alluserslist=();
11884: foreach my $user (sort(keys(%allusers))) {
11885: push(@alluserslist,$user.'&user');
11886: }
11887:
11888: if (!%listerror) {
11889: # no errors
11890: return (\@alluserslist);
11891: } elsif (scalar(keys(%servers)) == 1) {
11892: # one library server, one error
11893: my ($key) = keys(%listerror);
11894: return (\@alluserslist, $listerror{$key});
11895: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
11896: # con_lost indicates that we might miss data from at least one
11897: # library server
11898: return (\@alluserslist, 'con_lost');
11899: } else {
11900: # multiple library servers and no con_lost -> data should be
11901: # complete.
11902: return (\@alluserslist);
11903: }
11904:
11905: } else {
11906: return ([],'missing username');
11907: }
11908: } elsif(!defined($getpropath)) {
11909: my $path = $perlvar{'lonDocRoot'}.'/res/';
11910: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
11911: return (\@all_domains);
11912: } else {
11913: return ([],'missing domain');
11914: }
11915: }
11916:
11917: # --------------------------------------------- GetFileTimestamp
11918: # This function utilizes dirlist and returns the date stamp for
11919: # when it was last modified. It will also return an error of -1
11920: # if an error occurs
11921:
11922: sub GetFileTimestamp {
11923: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
11924: $studentDomain = &LONCAPA::clean_domain($studentDomain);
11925: $studentName = &LONCAPA::clean_username($studentName);
11926: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
11927: undef,$getuserdir);
11928: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11929: return -1;
11930: }
11931: if (ref($fileref) eq 'ARRAY') {
11932: my @stats = split('&',$fileref->[0]);
11933: # @stats contains first the filename, then the stat output
11934: return $stats[10]; # so this is 10 instead of 9.
11935: } else {
11936: return -1;
11937: }
11938: }
11939:
11940: sub stat_file {
11941: my ($uri) = @_;
11942: $uri = &clutter_with_no_wrapper($uri);
11943:
11944: my ($udom,$uname,$file);
11945: if ($uri =~ m-^/(uploaded|editupload)/-) {
11946: ($udom,$uname,$file) =
11947: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11948: $file = 'userfiles/'.$file;
11949: }
11950: if ($uri =~ m-^/res/-) {
11951: ($udom,$uname) =
11952: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11953: $file = $uri;
11954: }
11955:
11956: if (!$udom || !$uname || !$file) {
11957: # unable to handle the uri
11958: return ();
11959: }
11960: my $getpropath;
11961: if ($file =~ /^userfiles\//) {
11962: $getpropath = 1;
11963: }
11964: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11965: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11966: return ();
11967: } else {
11968: if (ref($listref) eq 'ARRAY') {
11969: my @stats = split('&',$listref->[0]);
11970: shift(@stats); #filename is first
11971: return @stats;
11972: }
11973: }
11974: return ();
11975: }
11976:
11977: # --------------------------------------------------------- recursedirs
11978: # Recursive function to traverse either a specific user's Authoring Space
11979: # or corresponding Published Resource Space, and populate the hash ref:
11980: # $dirhashref with URLs of all directories, and if $filehashref hash
11981: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11982: # or .rights files in resource space, and .meta, .save, .log, and .bak
11983: # files in Authoring Space.
11984: #
11985: # Inputs:
11986: #
11987: # $is_home - true if current server is home server for user's space
11988: # $context - either: priv, or res respectively for Authoring or Resource Space.
11989: # $docroot - Document root (i.e., /home/httpd/html
11990: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11991: # $relpath - Current path (relative to top level).
11992: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11993: # $filehashref - reference to hash to populate with URLs of files (Optional)
11994: #
11995: # Returns: nothing
11996: #
11997: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11998: #
11999: # Currently used by interface/londocs.pm to create linked select boxes for
12000: # directory and filename to import a Course "Author" resource into a course, and
12001: # also to create linked select boxes for Authoring Space and Directory to choose
12002: # save location for creation of a new "standard" problem from the Course Editor.
12003: #
12004:
12005: sub recursedirs {
12006: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
12007: return unless (ref($dirhashref) eq 'HASH');
12008: my $currpath = $docroot.$toppath;
12009: if ($relpath) {
12010: $currpath .= "/$relpath";
12011: }
12012: my $savefile;
12013: if (ref($filehashref)) {
12014: $savefile = 1;
12015: }
12016: if ($is_home) {
12017: if (opendir(my $dirh,$currpath)) {
12018: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
12019: next if ($item eq '');
12020: if (-d "$currpath/$item") {
12021: my $newpath;
12022: if ($relpath) {
12023: $newpath = "$relpath/$item";
12024: } else {
12025: $newpath = $item;
12026: }
12027: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
12028: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
12029: } elsif ($savefile) {
12030: if ($context eq 'priv') {
12031: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
12032: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
12033: }
12034: } else {
12035: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
12036: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
12037: }
12038: }
12039: }
12040: }
12041: closedir($dirh);
12042: }
12043: } else {
12044: my ($dirlistref,$listerror) =
12045: &dirlist($toppath.$relpath);
12046: my @dir_lines;
12047: my $dirptr=16384;
12048: if (ref($dirlistref) eq 'ARRAY') {
12049: foreach my $dir_line (sort
12050: {
12051: my ($afile)=split('&',$a,2);
12052: my ($bfile)=split('&',$b,2);
12053: return (lc($afile) cmp lc($bfile));
12054: } (@{$dirlistref})) {
12055: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
12056: split(/\&/,$dir_line,16);
12057: $item =~ s/\s+$//;
12058: next if (($item =~ /^\.\.?$/) || ($obs));
12059: if ($dirptr&$testdir) {
12060: my $newpath;
12061: if ($relpath) {
12062: $newpath = "$relpath/$item";
12063: } else {
12064: $relpath = '/';
12065: $newpath = $item;
12066: }
12067: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
12068: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
12069: } elsif ($savefile) {
12070: if ($context eq 'priv') {
12071: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
12072: $filehashref->{$relpath}{$item} = 1;
12073: }
12074: } else {
12075: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
12076: $filehashref->{$relpath}{$item} = 1;
12077: }
12078: }
12079: }
12080: }
12081: }
12082: }
12083: return;
12084: }
12085:
12086: # -------------------------------------------------------- Value of a Condition
12087:
12088: # gets the value of a specific preevaluated condition
12089: # stored in the string $env{user.state.<cid>}
12090: # or looks up a condition reference in the bighash and if if hasn't
12091: # already been evaluated recurses into docondval to get the value of
12092: # the condition, then memoizing it to
12093: # $env{user.state.<cid>.<condition>}
12094: sub directcondval {
12095: my $number=shift;
12096: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
12097: &Apache::lonuserstate::evalstate();
12098: }
12099: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
12100: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
12101: } elsif ($number =~ /^_/) {
12102: my $sub_condition;
12103: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12104: &GDBM_READER(),0640)) {
12105: $sub_condition=$bighash{'conditions'.$number};
12106: untie(%bighash);
12107: }
12108: my $value = &docondval($sub_condition);
12109: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
12110: return $value;
12111: }
12112: if ($env{'user.state.'.$env{'request.course.id'}}) {
12113: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
12114: } else {
12115: return 2;
12116: }
12117: }
12118:
12119: # get the collection of conditions for this resource
12120: sub condval {
12121: my $condidx=shift;
12122: my $allpathcond='';
12123: foreach my $cond (split(/\|/,$condidx)) {
12124: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
12125: $allpathcond.=
12126: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
12127: }
12128: }
12129: $allpathcond=~s/\|$//;
12130: return &docondval($allpathcond);
12131: }
12132:
12133: #evaluates an expression of conditions
12134: sub docondval {
12135: my ($allpathcond) = @_;
12136: my $result=0;
12137: if ($env{'request.course.id'}
12138: && defined($allpathcond)) {
12139: my $operand='|';
12140: my @stack;
12141: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
12142: if ($chunk eq '(') {
12143: push @stack,($operand,$result);
12144: } elsif ($chunk eq ')') {
12145: my $before=pop @stack;
12146: if (pop @stack eq '&') {
12147: $result=$result>$before?$before:$result;
12148: } else {
12149: $result=$result>$before?$result:$before;
12150: }
12151: } elsif (($chunk eq '&') || ($chunk eq '|')) {
12152: $operand=$chunk;
12153: } else {
12154: my $new=directcondval($chunk);
12155: if ($operand eq '&') {
12156: $result=$result>$new?$new:$result;
12157: } else {
12158: $result=$result>$new?$result:$new;
12159: }
12160: }
12161: }
12162: }
12163: return $result;
12164: }
12165:
12166: # ---------------------------------------------------- Devalidate courseresdata
12167:
12168: sub devalidatecourseresdata {
12169: my ($coursenum,$coursedomain)=@_;
12170: my $hashid=$coursenum.':'.$coursedomain;
12171: &devalidate_cache_new('courseres',$hashid);
12172: }
12173:
12174:
12175: # --------------------------------------------------- Course Resourcedata Query
12176: #
12177: # Parameters:
12178: # $coursenum - Number of the course.
12179: # $coursedomain - Domain at which the course was created.
12180: # Returns:
12181: # A hash of the course parameters along (I think) with timestamps
12182: # and version info.
12183:
12184: sub get_courseresdata {
12185: my ($coursenum,$coursedomain)=@_;
12186: my $coursehom=&homeserver($coursenum,$coursedomain);
12187: my $hashid=$coursenum.':'.$coursedomain;
12188: my ($result,$cached)=&is_cached_new('courseres',$hashid);
12189: my %dumpreply;
12190: unless (defined($cached)) {
12191: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
12192: $result=\%dumpreply;
12193: my ($tmp) = keys(%dumpreply);
12194: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12195: &do_cache_new('courseres',$hashid,$result,600);
12196: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
12197: return $tmp;
12198: } elsif ($tmp =~ /^(error)/) {
12199: $result=undef;
12200: &do_cache_new('courseres',$hashid,$result,600);
12201: }
12202: }
12203: return $result;
12204: }
12205:
12206: sub devalidateuserresdata {
12207: my ($uname,$udom)=@_;
12208: my $hashid="$udom:$uname";
12209: &devalidate_cache_new('userres',$hashid);
12210: }
12211:
12212: sub get_userresdata {
12213: my ($uname,$udom)=@_;
12214: #most student don\'t have any data set, check if there is some data
12215: if (&EXT_cache_status($udom,$uname)) { return undef; }
12216:
12217: my $hashid="$udom:$uname";
12218: my ($result,$cached)=&is_cached_new('userres',$hashid);
12219: if (!defined($cached)) {
12220: my %resourcedata=&dump('resourcedata',$udom,$uname);
12221: $result=\%resourcedata;
12222: &do_cache_new('userres',$hashid,$result,600);
12223: }
12224: my ($tmp)=keys(%$result);
12225: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
12226: return $result;
12227: }
12228: #error 2 occurs when the .db doesn't exist
12229: if ($tmp!~/error: 2 /) {
12230: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
12231: &logthis("<font color=\"blue\">WARNING:".
12232: " Trying to get resource data for ".
12233: $uname." at ".$udom.": ".
12234: $tmp."</font>");
12235: }
12236: } elsif ($tmp=~/error: 2 /) {
12237: #&EXT_cache_set($udom,$uname);
12238: &do_cache_new('userres',$hashid,undef,600);
12239: undef($tmp); # not really an error so don't send it back
12240: }
12241: return $tmp;
12242: }
12243: #----------------------------------------------- resdata - return resource data
12244: # Purpose:
12245: # Return resource data for either users or for a course.
12246: # Parameters:
12247: # $name - Course/user name.
12248: # $domain - Name of the domain the user/course is registered on.
12249: # $type - Type of thing $name is (must be 'course' or 'user')
12250: # $mapp - decluttered URL of enclosing map
12251: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
12252: # $recurseup - Ref to array of map URLs, starting with map containing
12253: # $mapp up through hierarchy of nested maps to top level map.
12254: # $courseid - CourseID (first part of param identifier).
12255: # $modifier - Middle part of param identifier.
12256: # $what - Last part of param identifier.
12257: # @which - Array of names of resources desired.
12258: # Returns:
12259: # The value of the first reasource in @which that is found in the
12260: # resource hash.
12261: # Exceptional Conditions:
12262: # If the $type passed in is not valid (not the string 'course' or
12263: # 'user', an undefined reference is returned.
12264: # If none of the resources are found, an undef is returned
12265: sub resdata {
12266: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
12267: $modifier,$what,@which)=@_;
12268: my $result;
12269: if ($type eq 'course') {
12270: $result=&get_courseresdata($name,$domain);
12271: } elsif ($type eq 'user') {
12272: $result=&get_userresdata($name,$domain);
12273: }
12274: if (!ref($result)) { return $result; }
12275: foreach my $item (@which) {
12276: if ($item->[1] eq 'course') {
12277: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
12278: unless ($$recursed) {
12279: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
12280: $$recursed = 1;
12281: }
12282: foreach my $item (@${recurseup}) {
12283: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
12284: last if (defined($result->{$norecursechk}));
12285: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
12286: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
12287: }
12288: }
12289: }
12290: if (defined($result->{$item->[0]})) {
12291: return [$result->{$item->[0]},$item->[1]];
12292: }
12293: }
12294: return undef;
12295: }
12296:
12297: sub get_domain_lti {
12298: my ($cdom,$context) = @_;
12299: my ($name,$cachename,%lti);
12300: if ($context eq 'consumer') {
12301: $name = 'ltitools';
12302: } elsif ($context eq 'provider') {
12303: $name = 'lti';
12304: } elsif ($context eq 'linkprot') {
12305: $name = 'ltisec';
12306: } else {
12307: return %lti;
12308: }
12309:
12310: if ($context eq 'linkprot') {
12311: $cachename = $context;
12312: } else {
12313: $cachename = $name;
12314: }
12315:
12316: my ($result,$cached)=&is_cached_new($cachename,$cdom);
12317: if (defined($cached)) {
12318: if (ref($result) eq 'HASH') {
12319: %lti = %{$result};
12320: }
12321: } else {
12322: my %domconfig = &get_dom('configuration',[$name],$cdom);
12323: if (ref($domconfig{$name}) eq 'HASH') {
12324: if ($context eq 'linkprot') {
12325: if (ref($domconfig{$name}{'linkprot'}) eq 'HASH') {
12326: %lti = %{$domconfig{$name}{'linkprot'}};
12327: }
12328: } else {
12329: %lti = %{$domconfig{$name}};
12330: }
12331: if (($context eq 'consumer') && (keys(%lti))) {
12332: my %encdomconfig = &get_dom('encconfig',[$name],$cdom,undef,1);
12333: if (ref($encdomconfig{$name}) eq 'HASH') {
12334: foreach my $id (keys(%lti)) {
12335: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
12336: foreach my $item ('key','secret') {
12337: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
12338: }
12339: }
12340: }
12341: }
12342: }
12343: }
12344: my $cachetime = 24*60*60;
12345: &do_cache_new($cachename,$cdom,\%lti,$cachetime);
12346: }
12347: return %lti;
12348: }
12349:
12350: sub get_course_lti {
12351: my ($cnum,$cdom) = @_;
12352: my $hashid=$cdom.'_'.$cnum;
12353: my %courselti;
12354: my ($result,$cached)=&is_cached_new('courselti',$hashid);
12355: if (defined($cached)) {
12356: if (ref($result) eq 'HASH') {
12357: %courselti = %{$result};
12358: }
12359: } else {
12360: %courselti = &dump('lti',$cdom,$cnum,undef,undef,undef,1);
12361: my $cachetime = 24*60*60;
12362: &do_cache_new('courselti',$hashid,\%courselti,$cachetime);
12363: }
12364: return %courselti;
12365: }
12366:
12367: sub courselti_itemid {
12368: my ($cnum,$cdom,$url,$method,$params,$context) = @_;
12369: my ($chome,$itemid);
12370: $chome = &homeserver($cnum,$cdom);
12371: return if ($chome eq 'no_host');
12372: if (ref($params) eq 'HASH') {
12373: my $items = &freeze_escape($params);
12374: my $rep;
12375: if (grep { $_ eq $chome } current_machine_ids()) {
12376: $rep = LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'});
12377: } else {
12378: my $escurl = &escape($url);
12379: my $escmethod = &escape($method);
12380: my $items = &freeze_escape($params);
12381: $rep = &reply("encrypt:lti:$cdom:$cnum:$context:$escurl:$escmethod:$items",$chome);
12382: }
12383: unless (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
12384: ($rep eq 'unknown_cmd')) {
12385: $itemid = $rep;
12386: }
12387: }
12388: return $itemid;
12389: }
12390:
12391: sub domainlti_itemid {
12392: my ($cdom,$url,$method,$params,$context) = @_;
12393: my ($primary_id,$itemid);
12394: $primary_id = &domain($cdom,'primary');
12395: return if ($primary_id eq '');
12396: if (ref($params) eq 'HASH') {
12397: my $items = &freeze_escape($params);
12398: my $rep;
12399: if (grep { $_ eq $primary_id } current_machine_ids()) {
12400: $rep = LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'});
12401: } else {
12402: my $cnum = '';
12403: my $escurl = &escape($url);
12404: my $escmethod = &escape($method);
12405: my $items = &freeze_escape($params);
12406: $rep = &reply("encrypt:lti:$cdom:$cnum:$context:$escurl:$escmethod:$items",$primary_id);
12407: }
12408: unless (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
12409: ($rep eq 'unknown_cmd')) {
12410: $itemid = $rep;
12411: }
12412: }
12413: return $itemid;
12414: }
12415:
12416: sub get_numsuppfiles {
12417: my ($cnum,$cdom,$ignorecache)=@_;
12418: my $hashid=$cnum.':'.$cdom;
12419: my ($suppcount,$cached);
12420: unless ($ignorecache) {
12421: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
12422: }
12423: unless (defined($cached)) {
12424: my $chome=&homeserver($cnum,$cdom);
12425: unless ($chome eq 'no_host') {
12426: ($suppcount,my $supptools,my $errors) = (0,0,0);
12427: my $suppmap = 'supplemental.sequence';
12428: ($suppcount,$supptools,$errors) =
12429: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
12430: $supptools,$errors);
12431: }
12432: &do_cache_new('suppcount',$hashid,$suppcount,600);
12433: }
12434: return $suppcount;
12435: }
12436:
12437: #
12438: # EXT resource caching routines
12439: #
12440:
12441: {
12442: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
12443: #
12444: # The course for which we cache
12445: my $cachedmapkey='';
12446: # The cached recursive maps for this course
12447: my %cachedmaps=();
12448: # When this was last done
12449: my $cachedmaptime='';
12450:
12451: sub clear_EXT_cache_status {
12452: &delenv('cache.EXT.');
12453: }
12454:
12455: sub EXT_cache_status {
12456: my ($target_domain,$target_user) = @_;
12457: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12458: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
12459: # We know already the user has no data
12460: return 1;
12461: } else {
12462: return 0;
12463: }
12464: }
12465:
12466: sub EXT_cache_set {
12467: my ($target_domain,$target_user) = @_;
12468: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12469: #&appenv({$cachename => time});
12470: }
12471:
12472: # --------------------------------------------------------- Value of a Variable
12473: sub EXT {
12474:
12475: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid,$recurseupref)=@_;
12476: unless ($varname) { return ''; }
12477: #get real user name/domain, courseid and symb
12478: my $courseid;
12479: my $publicuser;
12480: if ($symbparm) {
12481: $symbparm=&get_symb_from_alias($symbparm);
12482: }
12483: if (!($uname && $udom)) {
12484: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
12485: if (!$symbparm) { $symbparm=$cursymb; }
12486: } else {
12487: $courseid=$env{'request.course.id'};
12488: }
12489: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
12490: my $rest;
12491: if (defined($therest[0])) {
12492: $rest=join('.',@therest);
12493: } else {
12494: $rest='';
12495: }
12496:
12497: my $qualifierrest=$qualifier;
12498: if ($rest) { $qualifierrest.='.'.$rest; }
12499: my $spacequalifierrest=$space;
12500: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
12501: if ($realm eq 'user') {
12502: # --------------------------------------------------------------- user.resource
12503: if ($space eq 'resource') {
12504: if ( (defined($Apache::lonhomework::parsing_a_problem)
12505: || defined($Apache::lonhomework::parsing_a_task))
12506: &&
12507: ($symbparm eq &symbread()) ) {
12508: # if we are in the middle of processing the resource the
12509: # get the value we are planning on committing
12510: if (defined($Apache::lonhomework::results{$qualifierrest})) {
12511: return $Apache::lonhomework::results{$qualifierrest};
12512: } else {
12513: return $Apache::lonhomework::history{$qualifierrest};
12514: }
12515: } else {
12516: my %restored;
12517: if ($publicuser || $env{'request.state'} eq 'construct') {
12518: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
12519: } else {
12520: %restored=&restore($symbparm,$courseid,$udom,$uname);
12521: }
12522: return $restored{$qualifierrest};
12523: }
12524: # ----------------------------------------------------------------- user.access
12525: } elsif ($space eq 'access') {
12526: # FIXME - not supporting calls for a specific user
12527: return &allowed($qualifier,$rest);
12528: # ------------------------------------------ user.preferences, user.environment
12529: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
12530: if (($uname eq $env{'user.name'}) &&
12531: ($udom eq $env{'user.domain'})) {
12532: return $env{join('.',('environment',$qualifierrest))};
12533: } else {
12534: my %returnhash;
12535: if (!$publicuser) {
12536: %returnhash=&userenvironment($udom,$uname,
12537: $qualifierrest);
12538: }
12539: return $returnhash{$qualifierrest};
12540: }
12541: # ----------------------------------------------------------------- user.course
12542: } elsif ($space eq 'course') {
12543: # FIXME - not supporting calls for a specific user
12544: return $env{join('.',('request.course',$qualifier))};
12545: # ------------------------------------------------------------------- user.role
12546: } elsif ($space eq 'role') {
12547: # FIXME - not supporting calls for a specific user
12548: my ($role,$where)=split(/\./,$env{'request.role'});
12549: if ($qualifier eq 'value') {
12550: return $role;
12551: } elsif ($qualifier eq 'extent') {
12552: return $where;
12553: }
12554: # ----------------------------------------------------------------- user.domain
12555: } elsif ($space eq 'domain') {
12556: return $udom;
12557: # ------------------------------------------------------------------- user.name
12558: } elsif ($space eq 'name') {
12559: return $uname;
12560: # ---------------------------------------------------- Any other user namespace
12561: } else {
12562: my %reply;
12563: if (!$publicuser) {
12564: %reply=&get($space,[$qualifierrest],$udom,$uname);
12565: }
12566: return $reply{$qualifierrest};
12567: }
12568: } elsif ($realm eq 'query') {
12569: # ---------------------------------------------- pull stuff out of query string
12570: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
12571: [$spacequalifierrest]);
12572: return $env{'form.'.$spacequalifierrest};
12573: } elsif ($realm eq 'request') {
12574: # ------------------------------------------------------------- request.browser
12575: if ($space eq 'browser') {
12576: return $env{'browser.'.$qualifier};
12577: # ------------------------------------------------------------ request.filename
12578: } else {
12579: return $env{'request.'.$spacequalifierrest};
12580: }
12581: } elsif ($realm eq 'course') {
12582: # ---------------------------------------------------------- course.description
12583: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
12584: } elsif ($realm eq 'resource') {
12585:
12586: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
12587: if (!$symbparm) { $symbparm=&symbread(); }
12588: }
12589:
12590: if ($qualifier eq '') {
12591: if ($space eq 'title') {
12592: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
12593: return &gettitle($symbparm);
12594: }
12595:
12596: if ($space eq 'map') {
12597: my ($map) = &decode_symb($symbparm);
12598: return &symbread($map);
12599: }
12600: if ($space eq 'maptitle') {
12601: my ($map) = &decode_symb($symbparm);
12602: return &gettitle($map);
12603: }
12604: if ($space eq 'filename') {
12605: if ($symbparm) {
12606: return &clutter((&decode_symb($symbparm))[2]);
12607: }
12608: return &hreflocation('',$env{'request.filename'});
12609: }
12610:
12611: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
12612: if ($space eq 'visibleparts') {
12613: my $navmap = Apache::lonnavmaps::navmap->new();
12614: my $item;
12615: if (ref($navmap)) {
12616: my $res = $navmap->getBySymb($symbparm);
12617: my $parts = $res->parts();
12618: if (ref($parts) eq 'ARRAY') {
12619: $item = join(',',@{$parts});
12620: }
12621: undef($navmap);
12622: }
12623: return $item;
12624: }
12625: }
12626: }
12627:
12628: my ($section, $group, @groups, @recurseup, $recursed);
12629: if (ref($recurseupref) eq 'ARRAY') {
12630: @recurseup = @{$recurseupref};
12631: $recursed = 1;
12632: }
12633: my ($courselevelm,$courseleveli,$courselevel,$mapp);
12634: if (($courseid eq '') && ($cid)) {
12635: $courseid = $cid;
12636: }
12637: if (($symbparm && $courseid) &&
12638: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
12639:
12640: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
12641:
12642: # ----------------------------------------------------- Cascading lookup scheme
12643: my $symbp=$symbparm;
12644: $mapp=&deversion((&decode_symb($symbp))[0]);
12645: my $symbparm=$symbp.'.'.$spacequalifierrest;
12646: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
12647: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
12648: if (($env{'user.name'} eq $uname) &&
12649: ($env{'user.domain'} eq $udom)) {
12650: $section=$env{'request.course.sec'};
12651: @groups = split(/:/,$env{'request.course.groups'});
12652: @groups=&sort_course_groups($courseid,@groups);
12653: } else {
12654: if (! defined($usection)) {
12655: $section=&getsection($udom,$uname,$courseid);
12656: } else {
12657: $section = $usection;
12658: }
12659: @groups = &get_users_groups($udom,$uname,$courseid);
12660: }
12661:
12662: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
12663: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
12664: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
12665: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
12666:
12667: $courselevel=$courseid.'.'.$spacequalifierrest;
12668: my $courselevelr=$courseid.'.'.$symbparm;
12669: $courseleveli=$courseid.'.'.$recurseparm;
12670: $courselevelm=$courseid.'.'.$mapparm;
12671:
12672: # ----------------------------------------------------------- first, check user
12673:
12674: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
12675: \@recurseup,$courseid,'.',$spacequalifierrest,
12676: ([$courselevelr,'resource'],
12677: [$courselevelm,'map' ],
12678: [$courseleveli,'map' ],
12679: [$courselevel, 'course' ]));
12680: if (defined($userreply)) { return &get_reply($userreply); }
12681:
12682: # ------------------------------------------------ second, check some of course
12683: my $coursereply;
12684: if (@groups > 0) {
12685: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
12686: $recurseparm,$mapparm,$spacequalifierrest,
12687: $mapp,\$recursed,\@recurseup);
12688: if (defined($coursereply)) { return &get_reply($coursereply); }
12689: }
12690:
12691: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12692: $env{'course.'.$courseid.'.domain'},
12693: 'course',$mapp,\$recursed,\@recurseup,
12694: $courseid,'.['.$section.'].',$spacequalifierrest,
12695: ([$seclevelr, 'resource'],
12696: [$seclevelm, 'map' ],
12697: [$secleveli, 'map' ],
12698: [$seclevel, 'course' ],
12699: [$courselevelr,'resource']));
12700: if (defined($coursereply)) { return &get_reply($coursereply); }
12701:
12702: # ------------------------------------------------------ third, check map parms
12703: my %parmhash=();
12704: my $thisparm='';
12705: if (tie(%parmhash,'GDBM_File',
12706: $env{'request.course.fn'}.'_parms.db',
12707: &GDBM_READER(),0640)) {
12708: $thisparm=$parmhash{$symbparm};
12709: untie(%parmhash);
12710: }
12711: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
12712: }
12713: # ------------------------------------------ fourth, look in resource metadata
12714:
12715: my $what = $spacequalifierrest;
12716: $what=~s/\./\_/;
12717: my $filename;
12718: if (!$symbparm) { $symbparm=&symbread(); }
12719: if ($symbparm) {
12720: $filename=(&decode_symb($symbparm))[2];
12721: } else {
12722: $filename=$env{'request.filename'};
12723: }
12724: my $toolsymb;
12725: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
12726: $toolsymb = $symbparm;
12727: }
12728: my $metadata=&metadata($filename,$what,$toolsymb);
12729: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12730: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
12731: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12732:
12733: # ----------------------------------------------- fifth, look in rest of course
12734: if ($symbparm && defined($courseid) &&
12735: $courseid eq $env{'request.course.id'}) {
12736: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12737: $env{'course.'.$courseid.'.domain'},
12738: 'course',$mapp,\$recursed,\@recurseup,
12739: $courseid,'.',$spacequalifierrest,
12740: ([$courselevelm,'map' ],
12741: [$courseleveli,'map' ],
12742: [$courselevel, 'course']));
12743: if (defined($coursereply)) { return &get_reply($coursereply); }
12744: }
12745: # ------------------------------------------------------------------ Cascade up
12746: unless ($space eq '0') {
12747: my @parts=split(/_/,$space);
12748: my $id=pop(@parts);
12749: my $part=join('_',@parts);
12750: if ($part eq '') { $part='0'; }
12751: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
12752: $symbparm,$udom,$uname,$section,1);
12753: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
12754: }
12755: if ($recurse) { return undef; }
12756: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
12757: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
12758: # ---------------------------------------------------- Any other user namespace
12759: } elsif ($realm eq 'environment') {
12760: # ----------------------------------------------------------------- environment
12761: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
12762: return $env{'environment.'.$spacequalifierrest};
12763: } else {
12764: if ($uname eq 'anonymous' && $udom eq '') {
12765: return '';
12766: }
12767: my %returnhash=&userenvironment($udom,$uname,
12768: $spacequalifierrest);
12769: return $returnhash{$spacequalifierrest};
12770: }
12771: } elsif ($realm eq 'system') {
12772: # ----------------------------------------------------------------- system.time
12773: if ($space eq 'time') {
12774: return time;
12775: }
12776: } elsif ($realm eq 'server') {
12777: # ----------------------------------------------------------------- system.time
12778: if ($space eq 'name') {
12779: return $ENV{'SERVER_NAME'};
12780: }
12781: } elsif ($realm eq 'client') {
12782: if ($space eq 'remote_addr') {
12783: return &get_requestor_ip();
12784: }
12785: }
12786: return '';
12787: }
12788:
12789: sub get_reply {
12790: my ($reply_value) = @_;
12791: if (ref($reply_value) eq 'ARRAY') {
12792: if (wantarray) {
12793: return @$reply_value;
12794: }
12795: return $reply_value->[0];
12796: } else {
12797: return $reply_value;
12798: }
12799: }
12800:
12801: sub check_group_parms {
12802: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
12803: $recursed,$recurseupref) = @_;
12804: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
12805: [$what,'course']);
12806: my $coursereply;
12807: foreach my $group (@{$groups}) {
12808: my @groupitems = ();
12809: foreach my $level (@levels) {
12810: my $item = $courseid.'.['.$group.'].'.$level->[0];
12811: push(@groupitems,[$item,$level->[1]]);
12812: }
12813: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
12814: $env{'course.'.$courseid.'.domain'},
12815: 'course',$mapp,$recursed,$recurseupref,
12816: $courseid,'.['.$group.'].',$what,
12817: @groupitems);
12818: last if (defined($coursereply));
12819: }
12820: return $coursereply;
12821: }
12822:
12823: sub get_map_hierarchy {
12824: my ($mapname,$courseid) = @_;
12825: my @recurseup = ();
12826: if ($mapname) {
12827: if (($cachedmapkey eq $courseid) &&
12828: (abs($cachedmaptime-time)<5)) {
12829: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
12830: return @{$cachedmaps{$mapname}};
12831: }
12832: }
12833: my $navmap = Apache::lonnavmaps::navmap->new();
12834: if (ref($navmap)) {
12835: @recurseup = $navmap->recurseup_maps($mapname);
12836: undef($navmap);
12837: $cachedmaps{$mapname} = \@recurseup;
12838: $cachedmaptime=time;
12839: $cachedmapkey=$courseid;
12840: }
12841: }
12842: return @recurseup;
12843: }
12844:
12845: }
12846:
12847: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
12848: my ($courseid,@groups) = @_;
12849: @groups = sort(@groups);
12850: return @groups;
12851: }
12852:
12853: sub packages_tab_default {
12854: my ($uri,$varname,$toolsymb)=@_;
12855: my (undef,$part,$name)=split(/\./,$varname);
12856:
12857: my (@extension,@specifics,$do_default);
12858: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
12859: my ($pack_type,$pack_part)=split(/_/,$package,2);
12860: if ($pack_type eq 'default') {
12861: $do_default=1;
12862: } elsif ($pack_type eq 'extension') {
12863: push(@extension,[$package,$pack_type,$pack_part]);
12864: } elsif ($pack_part eq $part || $pack_type eq 'part') {
12865: # only look at packages defaults for packages that this id is
12866: push(@specifics,[$package,$pack_type,$pack_part]);
12867: }
12868: }
12869: # first look for a package that matches the requested part id
12870: foreach my $package (@specifics) {
12871: my (undef,$pack_type,$pack_part)=@{$package};
12872: next if ($pack_part ne $part);
12873: if (defined($packagetab{"$pack_type&$name&default"})) {
12874: return $packagetab{"$pack_type&$name&default"};
12875: }
12876: }
12877: # look for any possible matching non extension_ package
12878: foreach my $package (@specifics) {
12879: my (undef,$pack_type,$pack_part)=@{$package};
12880: if (defined($packagetab{"$pack_type&$name&default"})) {
12881: return $packagetab{"$pack_type&$name&default"};
12882: }
12883: if ($pack_type eq 'part') { $pack_part='0'; }
12884: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
12885: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
12886: }
12887: }
12888: # look for any posible extension_ match
12889: foreach my $package (@extension) {
12890: my ($package,$pack_type)=@{$package};
12891: if (defined($packagetab{"$pack_type&$name&default"})) {
12892: return $packagetab{"$pack_type&$name&default"};
12893: }
12894: if (defined($packagetab{$package."&$name&default"})) {
12895: return $packagetab{$package."&$name&default"};
12896: }
12897: }
12898: # look for a global default setting
12899: if ($do_default && defined($packagetab{"default&$name&default"})) {
12900: return $packagetab{"default&$name&default"};
12901: }
12902: return undef;
12903: }
12904:
12905: sub add_prefix_and_part {
12906: my ($prefix,$part)=@_;
12907: my $keyroot;
12908: if (defined($prefix) && $prefix !~ /^__/) {
12909: # prefix that has a part already
12910: $keyroot=$prefix;
12911: } elsif (defined($prefix)) {
12912: # prefix that is missing a part
12913: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
12914: } else {
12915: # no prefix at all
12916: if (defined($part)) { $keyroot='_'.$part; }
12917: }
12918: return $keyroot;
12919: }
12920:
12921: # ---------------------------------------------------------------- Get metadata
12922:
12923: my %metaentry;
12924: my %importedpartids;
12925: my %importedrespids;
12926: sub metadata {
12927: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
12928: $uri=&declutter($uri);
12929: # if it is a non metadata possible uri return quickly
12930: if (($uri eq '') ||
12931: (($uri =~ m|^/*adm/|) &&
12932: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
12933: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
12934: return undef;
12935: }
12936: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
12937: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
12938: return undef;
12939: }
12940: my $filename=$uri;
12941: $uri=~s/\.meta$//;
12942: #
12943: # Is the metadata already cached?
12944: # Look at timestamp of caching
12945: # Everything is cached by the main uri, libraries are never directly cached
12946: #
12947: if (!defined($liburi)) {
12948: my ($result,$cached)=&is_cached_new('meta',$uri);
12949: if (defined($cached)) { return $result->{':'.$what}; }
12950: }
12951:
12952: #
12953: # If the uri is for an external tool the file from
12954: # which metadata should be retrieved depends on whether
12955: # the tool had been configured to be gradable (set in the Course
12956: # Editor or Resource Editor).
12957: #
12958: # If a valid symb has been included as the third arg in the call
12959: # to &metadata() that can be used to retrieve the value of
12960: # parameter_0_gradable set for the resource, and included in the
12961: # uploaded map containing the tool. The value is retrieved via
12962: # &EXT(), if a valid symb is available. Otherwise the value of
12963: # gradable in the exttool_$marker.db file for the tool instance
12964: # is retrieved via &get().
12965: #
12966: # When lonuserstate::traceroute() calls lonnet::EXT() for
12967: # hiddenresource and encrypturl (during course initialization)
12968: # the map-level parameter for resource.0.gradable included in the
12969: # uploaded map containing the tool will not yet have been stored
12970: # in the user_course_parms.db file for the user's session, so in
12971: # this case fall back to retrieving gradable status from the
12972: # exttool_$marker.db file.
12973: #
12974: # In order to avoid an infinite loop, &metadata() will return
12975: # before a call to &EXT(), if the uri is for an external tool
12976: # and the $what for which metadata is being requested is
12977: # parameter_0_gradable or 0_gradable.
12978: #
12979:
12980: if ($uri =~ /ext\.tool$/) {
12981: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
12982: return;
12983: } else {
12984: my ($checked,$use_passback);
12985: if ($toolsymb ne '') {
12986: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
12987: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
12988: $checked = 1;
12989: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
12990: $use_passback = 1;
12991: }
12992: }
12993: }
12994: unless ($checked) {
12995: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
12996: $marker=~s/\D//g;
12997: if ($marker) {
12998: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
12999: $use_passback = $toolsettings{'gradable'};
13000: }
13001: }
13002: if ($use_passback) {
13003: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
13004: } else {
13005: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
13006: }
13007: }
13008: }
13009:
13010: {
13011: # Imported parts would go here
13012: my @origfiletagids=();
13013: my $importedparts=0;
13014:
13015: # Imported responseids would go here
13016: my $importedresponses=0;
13017: #
13018: # Is this a recursive call for a library?
13019: #
13020: # if (! exists($metacache{$uri})) {
13021: # $metacache{$uri}={};
13022: # }
13023: my $cachetime = 60*60;
13024: if ($liburi) {
13025: $liburi=&declutter($liburi);
13026: $filename=$liburi;
13027: } else {
13028: &devalidate_cache_new('meta',$uri);
13029: undef(%metaentry);
13030: }
13031: my %metathesekeys=();
13032: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
13033: my $metastring;
13034: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
13035: my $which = &hreflocation('','/'.($liburi || $uri));
13036: $metastring =
13037: &Apache::lonnet::ssi_body($which,
13038: ('grade_target' => 'meta'));
13039: $cachetime = 1; # only want this cached in the child not long term
13040: } elsif (($uri !~ m -^(editupload)/-) &&
13041: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
13042: my $file=&filelocation('',&clutter($filename));
13043: #push(@{$metaentry{$uri.'.file'}},$file);
13044: $metastring=&getfile($file);
13045: }
13046: my $parser=HTML::LCParser->new(\$metastring);
13047: my $token;
13048: undef %metathesekeys;
13049: while ($token=$parser->get_token) {
13050: if ($token->[0] eq 'S') {
13051: if (defined($token->[2]->{'package'})) {
13052: #
13053: # This is a package - get package info
13054: #
13055: my $package=$token->[2]->{'package'};
13056: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
13057: if (defined($token->[2]->{'id'})) {
13058: $keyroot.='_'.$token->[2]->{'id'};
13059: }
13060: if ($metaentry{':packages'}) {
13061: $metaentry{':packages'}.=','.$package.$keyroot;
13062: } else {
13063: $metaentry{':packages'}=$package.$keyroot;
13064: }
13065: foreach my $pack_entry (keys(%packagetab)) {
13066: my $part=$keyroot;
13067: $part=~s/^\_//;
13068: if ($pack_entry=~/^\Q$package\E\&/ ||
13069: $pack_entry=~/^\Q$package\E_0\&/) {
13070: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
13071: # ignore package.tab specified default values
13072: # here &package_tab_default() will fetch those
13073: if ($subp eq 'default') { next; }
13074: my $value=$packagetab{$pack_entry};
13075: my $unikey;
13076: if ($pack =~ /_0$/) {
13077: $unikey='parameter_0_'.$name;
13078: $part=0;
13079: } else {
13080: $unikey='parameter'.$keyroot.'_'.$name;
13081: }
13082: if ($subp eq 'display') {
13083: $value.=' [Part: '.$part.']';
13084: }
13085: $metaentry{':'.$unikey.'.part'}=$part;
13086: $metathesekeys{$unikey}=1;
13087: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
13088: $metaentry{':'.$unikey.'.'.$subp}=$value;
13089: }
13090: if (defined($metaentry{':'.$unikey.'.default'})) {
13091: $metaentry{':'.$unikey}=
13092: $metaentry{':'.$unikey.'.default'};
13093: }
13094: }
13095: }
13096: } else {
13097: #
13098: # This is not a package - some other kind of start tag
13099: #
13100: my $entry=$token->[1];
13101: my $unikey='';
13102:
13103: if ($entry eq 'import') {
13104: #
13105: # Importing a library here
13106: #
13107: my $location=$parser->get_text('/import');
13108: my $dir=$filename;
13109: $dir=~s|[^/]*$||;
13110: $location=&filelocation($dir,$location);
13111:
13112: my $importid=$token->[2]->{'id'};
13113: my $importmode=$token->[2]->{'importmode'};
13114: #
13115: # Check metadata for imported file to
13116: # see if it contained response items
13117: #
13118: my ($origfile,@libfilekeys);
13119: my %currmetaentry = %metaentry;
13120: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
13121: $depthcount+1));
13122: if (grep(/^responseorder$/,@libfilekeys)) {
13123: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
13124: undef,$depthcount+1);
13125: if ($libresponseorder ne '') {
13126: if ($#origfiletagids<0) {
13127: undef(%importedrespids);
13128: undef(%importedpartids);
13129: }
13130: my @respids = split(/\s*,\s*/,$libresponseorder);
13131: if (@respids) {
13132: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
13133: }
13134: if ($importedrespids{$importid} ne '') {
13135: $importedresponses = 1;
13136: # We need to get the original file and the imported file to get the response order correct
13137: # Load and inspect original file
13138: if ($#origfiletagids<0) {
13139: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
13140: $origfile=&getfile($origfilelocation);
13141: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13142: }
13143: }
13144: }
13145: }
13146: # Do not overwrite contents of %metaentry hash for resource itself with
13147: # hash populated for imported library file
13148: %metaentry = %currmetaentry;
13149: undef(%currmetaentry);
13150: if ($importmode eq 'part') {
13151: # Import as part(s)
13152: $importedparts=1;
13153: # We need to get the original file and the imported file to get the part order correct
13154: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
13155: # Load and inspect original file if we didn't do that already
13156: if ($#origfiletagids<0) {
13157: undef(%importedrespids);
13158: undef(%importedpartids);
13159: if ($origfile eq '') {
13160: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
13161: $origfile=&getfile($origfilelocation);
13162: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13163: }
13164: }
13165: my @impfilepartids;
13166: # If <partorder> tag is included in metadata for the imported file
13167: # get the parts in the imported file from that.
13168: if (grep(/^partorder$/,@libfilekeys)) {
13169: %currmetaentry = %metaentry;
13170: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
13171: $depthcount+1);
13172: %metaentry = %currmetaentry;
13173: undef(%currmetaentry);
13174: if ($libpartorder ne '') {
13175: @impfilepartids=split(/\s*,\s*/,$libpartorder);
13176: }
13177: } else {
13178: # If no <partorder> tag available, load and inspect imported file
13179: my $impfile=&getfile($location);
13180: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13181: }
13182: if ($#impfilepartids>=0) {
13183: # This problem had parts
13184: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
13185: } else {
13186: # Importing by turning a single problem into a problem part
13187: # It gets the import-tags ID as part-ID
13188: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
13189: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
13190: }
13191: } else {
13192: # Import as problem or as normal import
13193: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
13194: unless ($importmode eq 'problem') {
13195: # Normal import
13196: if (defined($token->[2]->{'id'})) {
13197: $unikey.='_'.$token->[2]->{'id'};
13198: }
13199: }
13200: # Check metadata for imported file to
13201: # see if it contained parts
13202: if (grep(/^partorder$/,@libfilekeys)) {
13203: %currmetaentry = %metaentry;
13204: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
13205: $depthcount+1);
13206: %metaentry = %currmetaentry;
13207: undef(%currmetaentry);
13208: if ($libpartorder ne '') {
13209: $importedparts = 1;
13210: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
13211: }
13212: }
13213: }
13214: if ($depthcount<20) {
13215: my $metadata =
13216: &metadata($uri,'keys',$toolsymb,$location,$unikey,
13217: $depthcount+1);
13218: foreach my $meta (split(',',$metadata)) {
13219: $metaentry{':'.$meta}=$metaentry{':'.$meta};
13220: $metathesekeys{$meta}=1;
13221: }
13222: }
13223: } else {
13224: #
13225: # Not importing, some other kind of non-package, non-library start tag
13226: #
13227: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
13228: if (defined($token->[2]->{'id'})) {
13229: $unikey.='_'.$token->[2]->{'id'};
13230: }
13231: if (defined($token->[2]->{'name'})) {
13232: $unikey.='_'.$token->[2]->{'name'};
13233: }
13234: $metathesekeys{$unikey}=1;
13235: foreach my $param (@{$token->[3]}) {
13236: $metaentry{':'.$unikey.'.'.$param} =
13237: $token->[2]->{$param};
13238: }
13239: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
13240: my $default=$metaentry{':'.$unikey.'.default'};
13241: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
13242: # only ws inside the tag, and not in default, so use default
13243: # as value
13244: $metaentry{':'.$unikey}=$default;
13245: } elsif ( $internaltext =~ /\S/ ) {
13246: # something interesting inside the tag
13247: $metaentry{':'.$unikey}=$internaltext;
13248: } else {
13249: # no interesting values, don't set a default
13250: }
13251: # end of not-a-package not-a-library import
13252: }
13253: # end of not-a-package start tag
13254: }
13255: # the next is the end of "start tag"
13256: }
13257: }
13258: my ($extension) = ($uri =~ /\.(\w+)$/);
13259: $extension = lc($extension);
13260: if ($extension eq 'htm') { $extension='html'; }
13261:
13262: foreach my $key (keys(%packagetab)) {
13263: #no specific packages #how's our extension
13264: if ($key!~/^extension_\Q$extension\E&/) { next; }
13265: &metadata_create_package_def($uri,$key,'extension_'.$extension,
13266: \%metathesekeys);
13267: }
13268:
13269: if (!exists($metaentry{':packages'})
13270: || $packagetab{"import_defaults&extension_$extension"}) {
13271: foreach my $key (keys(%packagetab)) {
13272: #no specific packages well let's get default then
13273: if ($key!~/^default&/) { next; }
13274: &metadata_create_package_def($uri,$key,'default',
13275: \%metathesekeys);
13276: }
13277: }
13278: # are there custom rights to evaluate
13279: if ($metaentry{':copyright'} eq 'custom') {
13280:
13281: #
13282: # Importing a rights file here
13283: #
13284: unless ($depthcount) {
13285: my $location=$metaentry{':customdistributionfile'};
13286: my $dir=$filename;
13287: $dir=~s|[^/]*$||;
13288: $location=&filelocation($dir,$location);
13289: my $rights_metadata =
13290: &metadata($uri,'keys',$toolsymb,$location,'_rights',
13291: $depthcount+1);
13292: foreach my $rights (split(',',$rights_metadata)) {
13293: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
13294: $metathesekeys{$rights}=1;
13295: }
13296: }
13297: }
13298: # uniqifiy package listing
13299: my %seen;
13300: my @uniq_packages =
13301: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
13302: $metaentry{':packages'} = join(',',@uniq_packages);
13303:
13304: if (($importedresponses) || ($importedparts)) {
13305: if ($importedparts) {
13306: # We had imported parts and need to rebuild partorder
13307: $metaentry{':partorder'}='';
13308: $metathesekeys{'partorder'}=1;
13309: }
13310: if ($importedresponses) {
13311: # We had imported responses and need to rebuil responseorder
13312: $metaentry{':responseorder'}='';
13313: $metathesekeys{'responseorder'}=1;
13314: }
13315: for (my $index=0;$index<$#origfiletagids;$index+=2) {
13316: my $origid = $origfiletagids[$index+1];
13317: if ($origfiletagids[$index] eq 'part') {
13318: # Original part, part of the problem
13319: if ($importedparts) {
13320: $metaentry{':partorder'}.=','.$origid;
13321: }
13322: } elsif ($origfiletagids[$index] eq 'import') {
13323: if ($importedparts) {
13324: # We have imported parts at this position
13325: if ($importedpartids{$origid} ne '') {
13326: $metaentry{':partorder'}.=','.$importedpartids{$origid};
13327: }
13328: }
13329: if ($importedresponses) {
13330: # We have imported responses at this position
13331: if ($importedrespids{$origid} ne '') {
13332: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
13333: }
13334: }
13335: } else {
13336: # Original response item, part of the problem
13337: if ($importedresponses) {
13338: $metaentry{':responseorder'}.=','.$origid;
13339: }
13340: }
13341: }
13342: if ($importedparts) {
13343: $metaentry{':partorder'}=~s/^\,//;
13344: }
13345: if ($importedresponses) {
13346: $metaentry{':responseorder'}=~s/^\,//;
13347: }
13348: }
13349: $metaentry{':keys'} = join(',',keys(%metathesekeys));
13350: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
13351: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
13352: unless ($liburi) {
13353: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
13354: }
13355: # this is the end of "was not already recently cached
13356: }
13357: return $metaentry{':'.$what};
13358: }
13359:
13360: sub metadata_create_package_def {
13361: my ($uri,$key,$package,$metathesekeys)=@_;
13362: my ($pack,$name,$subp)=split(/\&/,$key);
13363: if ($subp eq 'default') { next; }
13364:
13365: if (defined($metaentry{':packages'})) {
13366: $metaentry{':packages'}.=','.$package;
13367: } else {
13368: $metaentry{':packages'}=$package;
13369: }
13370: my $value=$packagetab{$key};
13371: my $unikey;
13372: $unikey='parameter_0_'.$name;
13373: $metaentry{':'.$unikey.'.part'}=0;
13374: $$metathesekeys{$unikey}=1;
13375: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
13376: $metaentry{':'.$unikey.'.'.$subp}=$value;
13377: }
13378: if (defined($metaentry{':'.$unikey.'.default'})) {
13379: $metaentry{':'.$unikey}=
13380: $metaentry{':'.$unikey.'.default'};
13381: }
13382: }
13383:
13384: sub metadata_generate_part0 {
13385: my ($metadata,$metacache,$uri) = @_;
13386: my %allnames;
13387: foreach my $metakey (keys(%$metadata)) {
13388: if ($metakey=~/^parameter\_(.*)/) {
13389: my $part=$$metacache{':'.$metakey.'.part'};
13390: my $name=$$metacache{':'.$metakey.'.name'};
13391: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
13392: $allnames{$name}=$part;
13393: }
13394: }
13395: }
13396: foreach my $name (keys(%allnames)) {
13397: $$metadata{"parameter_0_$name"}=1;
13398: my $key=":parameter_0_$name";
13399: $$metacache{"$key.part"}='0';
13400: $$metacache{"$key.name"}=$name;
13401: $$metacache{"$key.type"}=$$metacache{':parameter_'.
13402: $allnames{$name}.'_'.$name.
13403: '.type'};
13404: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
13405: '.display'};
13406: my $expr='[Part: '.$allnames{$name}.']';
13407: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
13408: $$metacache{"$key.display"}=$olddis;
13409: }
13410: }
13411:
13412: # ------------------------------------------------------ Devalidate title cache
13413:
13414: sub devalidate_title_cache {
13415: my ($url)=@_;
13416: if (!$env{'request.course.id'}) { return; }
13417: my $symb=&symbread($url);
13418: if (!$symb) { return; }
13419: my $key=$env{'request.course.id'}."\0".$symb;
13420: &devalidate_cache_new('title',$key);
13421: }
13422:
13423: # ------------------------------------------------- Get the title of a course
13424:
13425: sub current_course_title {
13426: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
13427: }
13428: # ------------------------------------------------- Get the title of a resource
13429:
13430: sub gettitle {
13431: my $urlsymb=shift;
13432: my $symb=&symbread($urlsymb);
13433: if ($symb) {
13434: my $key=$env{'request.course.id'}."\0".$symb;
13435: my ($result,$cached)=&is_cached_new('title',$key);
13436: if (defined($cached)) {
13437: return $result;
13438: }
13439: my ($map,$resid,$url)=&decode_symb($symb);
13440: my $title='';
13441: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
13442: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
13443: } else {
13444: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13445: &GDBM_READER(),0640)) {
13446: my $mapid=$bighash{'map_pc_'.&clutter($map)};
13447: $title=$bighash{'title_'.$mapid.'.'.$resid};
13448: untie(%bighash);
13449: }
13450: }
13451: $title=~s/\&colon\;/\:/gs;
13452: if ($title) {
13453: # Remember both $symb and $title for dynamic metadata
13454: $accesshash{$symb.'___crstitle'}=$title;
13455: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
13456: # Cache this title and then return it
13457: return &do_cache_new('title',$key,$title,600);
13458: }
13459: $urlsymb=$url;
13460: }
13461: my $title=&metadata($urlsymb,'title');
13462: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
13463: return $title;
13464: }
13465:
13466: sub get_slot {
13467: my ($which,$cnum,$cdom)=@_;
13468: if (!$cnum || !$cdom) {
13469: (undef,my $courseid)=&whichuser();
13470: $cdom=$env{'course.'.$courseid.'.domain'};
13471: $cnum=$env{'course.'.$courseid.'.num'};
13472: }
13473: my $key=join("\0",'slots',$cdom,$cnum,$which);
13474: my %slotinfo;
13475: if (exists($remembered{$key})) {
13476: $slotinfo{$which} = $remembered{$key};
13477: } else {
13478: %slotinfo=&get('slots',[$which],$cdom,$cnum);
13479: &Apache::lonhomework::showhash(%slotinfo);
13480: my ($tmp)=keys(%slotinfo);
13481: if ($tmp=~/^error:/) { return (); }
13482: $remembered{$key} = $slotinfo{$which};
13483: }
13484: if (ref($slotinfo{$which}) eq 'HASH') {
13485: return %{$slotinfo{$which}};
13486: }
13487: return $slotinfo{$which};
13488: }
13489:
13490: sub get_reservable_slots {
13491: my ($cnum,$cdom,$uname,$udom) = @_;
13492: my $now = time;
13493: my $reservable_info;
13494: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
13495: if (exists($remembered{$key})) {
13496: $reservable_info = $remembered{$key};
13497: } else {
13498: my %resv;
13499: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
13500: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
13501: $reservable_info = \%resv;
13502: $remembered{$key} = $reservable_info;
13503: }
13504: return $reservable_info;
13505: }
13506:
13507: sub get_course_slots {
13508: my ($cnum,$cdom) = @_;
13509: my $hashid=$cnum.':'.$cdom;
13510: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
13511: if (defined($cached)) {
13512: if (ref($result) eq 'HASH') {
13513: return %{$result};
13514: }
13515: } else {
13516: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
13517: my ($tmp) = keys(%slots);
13518: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
13519: &do_cache_new('allslots',$hashid,\%slots,600);
13520: return %slots;
13521: }
13522: }
13523: return;
13524: }
13525:
13526: sub devalidate_slots_cache {
13527: my ($cnum,$cdom)=@_;
13528: my $hashid=$cnum.':'.$cdom;
13529: &devalidate_cache_new('allslots',$hashid);
13530: }
13531:
13532: sub get_coursechange {
13533: my ($cdom,$cnum) = @_;
13534: if ($cdom eq '' || $cnum eq '') {
13535: return unless ($env{'request.course.id'});
13536: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
13537: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
13538: }
13539: my $hashid=$cdom.'_'.$cnum;
13540: my ($change,$cached)=&is_cached_new('crschange',$hashid);
13541: if ((defined($cached)) && ($change ne '')) {
13542: return $change;
13543: } else {
13544: my %crshash;
13545: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
13546: if ($crshash{'internal.contentchange'} eq '') {
13547: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
13548: if ($change eq '') {
13549: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
13550: $change = $crshash{'internal.created'};
13551: }
13552: } else {
13553: $change = $crshash{'internal.contentchange'};
13554: }
13555: my $cachetime = 600;
13556: &do_cache_new('crschange',$hashid,$change,$cachetime);
13557: }
13558: return $change;
13559: }
13560:
13561: sub devalidate_coursechange_cache {
13562: my ($cnum,$cdom)=@_;
13563: my $hashid=$cnum.':'.$cdom;
13564: &devalidate_cache_new('crschange',$hashid);
13565: }
13566:
13567: # ------------------------------------------------- Update symbolic store links
13568:
13569: sub symblist {
13570: my ($mapname,%newhash)=@_;
13571: $mapname=&deversion(&declutter($mapname));
13572: my %hash;
13573: if (($env{'request.course.fn'}) && (%newhash)) {
13574: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13575: &GDBM_WRCREAT(),0640)) {
13576: foreach my $url (keys(%newhash)) {
13577: next if ($url eq 'last_known'
13578: && $env{'form.no_update_last_known'});
13579: $hash{declutter($url)}=&encode_symb($mapname,
13580: $newhash{$url}->[1],
13581: $newhash{$url}->[0]);
13582: }
13583: if (untie(%hash)) {
13584: return 'ok';
13585: }
13586: }
13587: }
13588: return 'error';
13589: }
13590:
13591: # --------------------------------------------------------------- Verify a symb
13592:
13593: sub symbverify {
13594: my ($symb,$thisurl,$encstate)=@_;
13595: my $thisfn=$thisurl;
13596: $thisfn=&declutter($thisfn);
13597: # direct jump to resource in page or to a sequence - will construct own symbs
13598: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
13599: # check URL part
13600: my ($map,$resid,$url)=&decode_symb($symb);
13601:
13602: unless ($url eq $thisfn) { return 0; }
13603:
13604: $symb=&symbclean($symb);
13605: $thisurl=&deversion($thisurl);
13606: $thisfn=&deversion($thisfn);
13607:
13608: my %bighash;
13609: my $okay=0;
13610:
13611: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13612: &GDBM_READER(),0640)) {
13613: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
13614: $thisurl =~ s/\?.+$//;
13615: if ($map =~ m{^uploaded/.+\.page$}) {
13616: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
13617: $thisurl =~ s{^\Qhttp://https://\E}{https://};
13618: }
13619: }
13620: my $ids;
13621: if ($map =~ m{^uploaded/.+\.page$}) {
13622: $ids=$bighash{'ids_'.&clutter_with_no_wrapper($thisurl)};
13623: } else {
13624: $ids=$bighash{'ids_'.&clutter($thisurl)};
13625: }
13626: unless ($ids) {
13627: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
13628: $ids=$bighash{$idkey};
13629: }
13630: if ($ids) {
13631: # ------------------------------------------------------------------- Has ID(s)
13632: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
13633: $symb =~ s/\?.+$//;
13634: }
13635: foreach my $id (split(/\,/,$ids)) {
13636: my ($mapid,$resid)=split(/\./,$id);
13637: if (
13638: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
13639: eq $symb) {
13640: if (ref($encstate)) {
13641: $$encstate = $bighash{'encrypted_'.$id};
13642: }
13643: if (($env{'request.role.adv'}) ||
13644: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
13645: ($thisurl eq '/adm/navmaps')) {
13646: $okay=1;
13647: last;
13648: }
13649: }
13650: }
13651: }
13652: untie(%bighash);
13653: }
13654: return $okay;
13655: }
13656:
13657: # --------------------------------------------------------------- Clean-up symb
13658:
13659: sub symbclean {
13660: my $symb=shift;
13661: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13662: # remove version from map
13663: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
13664:
13665: # remove version from URL
13666: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
13667:
13668: # remove wrapper
13669:
13670: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
13671: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
13672: return $symb;
13673: }
13674:
13675: # ---------------------------------------------- Split symb to find map and url
13676:
13677: sub encode_symb {
13678: my ($map,$resid,$url)=@_;
13679: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
13680: }
13681:
13682: sub decode_symb {
13683: my $symb=shift;
13684: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13685: my ($map,$resid,$url)=split(/___/,$symb);
13686: return (&fixversion($map),$resid,&fixversion($url));
13687: }
13688:
13689: sub fixversion {
13690: my $fn=shift;
13691: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
13692: my %bighash;
13693: my $uri=&clutter($fn);
13694: my $key=$env{'request.course.id'}.'_'.$uri;
13695: # is this cached?
13696: my ($result,$cached)=&is_cached_new('courseresversion',$key);
13697: if (defined($cached)) { return $result; }
13698: # unfortunately not cached, or expired
13699: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13700: &GDBM_READER(),0640)) {
13701: if ($bighash{'version_'.$uri}) {
13702: my $version=$bighash{'version_'.$uri};
13703: unless (($version eq 'mostrecent') ||
13704: ($version==&getversion($uri))) {
13705: $uri=~s/\.(\w+)$/\.$version\.$1/;
13706: }
13707: }
13708: untie %bighash;
13709: }
13710: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
13711: }
13712:
13713: sub deversion {
13714: my $url=shift;
13715: $url=~s/\.\d+\.(\w+)$/\.$1/;
13716: return $url;
13717: }
13718:
13719: # ------------------------------------------------------ Return symb list entry
13720:
13721: sub symbread {
13722: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles,
13723: $ignoresymbdb,$noenccheck)=@_;
13724: my $cache_str='request.symbread.cached.'.$thisfn;
13725: if (defined($env{$cache_str})) {
13726: unless (ref($possibles) eq 'HASH') {
13727: if ($ignorecachednull) {
13728: return $env{$cache_str} unless ($env{$cache_str} eq '');
13729: } else {
13730: return $env{$cache_str};
13731: }
13732: }
13733: }
13734: # no filename provided? try from environment
13735: unless ($thisfn) {
13736: if ($env{'request.symb'}) {
13737: return $env{$cache_str}=&symbclean($env{'request.symb'});
13738: }
13739: $thisfn=$env{'request.filename'};
13740: }
13741: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13742: # is that filename actually a symb? Verify, clean, and return
13743: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
13744: if (&symbverify($thisfn,$1)) {
13745: return $env{$cache_str}=&symbclean($thisfn);
13746: }
13747: }
13748: $thisfn=declutter($thisfn);
13749: my %hash;
13750: my %bighash;
13751: my $syval='';
13752: if (($env{'request.course.fn'}) && ($thisfn)) {
13753: unless ($ignoresymbdb) {
13754: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13755: &GDBM_READER(),0640)) {
13756: $syval=$hash{$thisfn};
13757: untie(%hash);
13758: }
13759: if ($syval && $checkforblock) {
13760: my @blockers = &has_comm_blocking('bre',$syval,$thisfn,$ignoresymbdb,$noenccheck);
13761: if (@blockers) {
13762: $syval='';
13763: }
13764: }
13765: }
13766: # ---------------------------------------------------------- There was an entry
13767: if ($syval) {
13768: #unless ($syval=~/\_\d+$/) {
13769: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
13770: #&appenv({'request.ambiguous' => $thisfn});
13771: #return $env{$cache_str}='';
13772: #}
13773: #$syval.=$1;
13774: #}
13775: } else {
13776: # ------------------------------------------------------- Was not in symb table
13777: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13778: &GDBM_READER(),0640)) {
13779: # ---------------------------------------------- Get ID(s) for current resource
13780: my $ids=$bighash{'ids_'.&clutter($thisfn)};
13781: unless ($ids) {
13782: $ids=$bighash{'ids_/'.$thisfn};
13783: }
13784: unless ($ids) {
13785: # alias?
13786: $ids=$bighash{'mapalias_'.$thisfn};
13787: }
13788: if ($ids) {
13789: # ------------------------------------------------------------------- Has ID(s)
13790: my @possibilities=split(/\,/,$ids);
13791: if ($#possibilities==0) {
13792: # ----------------------------------------------- There is only one possibility
13793: my ($mapid,$resid)=split(/\./,$ids);
13794: $syval=&encode_symb($bighash{'map_id_'.$mapid},
13795: $resid,$thisfn);
13796: if (ref($possibles) eq 'HASH') {
13797: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
13798: $possibles->{$syval} = 1;
13799: }
13800: }
13801: if ($checkforblock) {
13802: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
13803: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids},'',$noenccheck);
13804: if (@blockers) {
13805: $syval = '';
13806: untie(%bighash);
13807: return $env{$cache_str}='';
13808: }
13809: }
13810: }
13811: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13812: # ------------------------------------------ There is more than one possibility
13813: my $realpossible=0;
13814: foreach my $id (@possibilities) {
13815: my $file=$bighash{'src_'.$id};
13816: my $canaccess;
13817: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13818: $canaccess = 1;
13819: } else {
13820: $canaccess = &allowed('bre',$file);
13821: }
13822: if ($canaccess) {
13823: my ($mapid,$resid)=split(/\./,$id);
13824: if ($bighash{'map_type_'.$mapid} ne 'page') {
13825: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
13826: $resid,$thisfn);
13827: next if ($bighash{'randomout_'.$id} && !$env{'request.role.adv'});
13828: next unless (($noenccheck) || ($bighash{'encrypted_'.$id} eq $env{'request.enc'}));
13829: if ($checkforblock) {
13830: my @blockers = &has_comm_blocking('bre',$poss_syval,$file,'',$noenccheck);
13831: if (@blockers > 0) {
13832: $syval = '';
13833: } else {
13834: $syval = $poss_syval;
13835: $realpossible++;
13836: }
13837: } else {
13838: $syval = $poss_syval;
13839: $realpossible++;
13840: }
13841: if ($syval) {
13842: if (ref($possibles) eq 'HASH') {
13843: $possibles->{$syval} = 1;
13844: }
13845: }
13846: }
13847: }
13848: }
13849: if ($realpossible!=1) { $syval=''; }
13850: } else {
13851: $syval='';
13852: }
13853: }
13854: untie(%bighash);
13855: }
13856: }
13857: if ($syval) {
13858: return $env{$cache_str}=$syval;
13859: }
13860: }
13861: &appenv({'request.ambiguous' => $thisfn});
13862: return $env{$cache_str}='';
13863: }
13864:
13865: # ---------------------------------------------------------- Return random seed
13866:
13867: sub numval {
13868: my $txt=shift;
13869: $txt=~tr/A-J/0-9/;
13870: $txt=~tr/a-j/0-9/;
13871: $txt=~tr/K-T/0-9/;
13872: $txt=~tr/k-t/0-9/;
13873: $txt=~tr/U-Z/0-5/;
13874: $txt=~tr/u-z/0-5/;
13875: $txt=~s/\D//g;
13876: if ($_64bit) { if ($txt > 2**32) { return -1; } }
13877: return int($txt);
13878: }
13879:
13880: sub numval2 {
13881: my $txt=shift;
13882: $txt=~tr/A-J/0-9/;
13883: $txt=~tr/a-j/0-9/;
13884: $txt=~tr/K-T/0-9/;
13885: $txt=~tr/k-t/0-9/;
13886: $txt=~tr/U-Z/0-5/;
13887: $txt=~tr/u-z/0-5/;
13888: $txt=~s/\D//g;
13889: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13890: my $total;
13891: foreach my $val (@txts) { $total+=$val; }
13892: if ($_64bit) { if ($total > 2**32) { return -1; } }
13893: return int($total);
13894: }
13895:
13896: sub numval3 {
13897: use integer;
13898: my $txt=shift;
13899: $txt=~tr/A-J/0-9/;
13900: $txt=~tr/a-j/0-9/;
13901: $txt=~tr/K-T/0-9/;
13902: $txt=~tr/k-t/0-9/;
13903: $txt=~tr/U-Z/0-5/;
13904: $txt=~tr/u-z/0-5/;
13905: $txt=~s/\D//g;
13906: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13907: my $total;
13908: foreach my $val (@txts) { $total+=$val; }
13909: if ($_64bit) { $total=(($total<<32)>>32); }
13910: return $total;
13911: }
13912:
13913: sub digest {
13914: my ($data)=@_;
13915: my $digest=&Digest::MD5::md5($data);
13916: my ($a,$b,$c,$d)=unpack("iiii",$digest);
13917: my ($e,$f);
13918: {
13919: use integer;
13920: $e=($a+$b);
13921: $f=($c+$d);
13922: if ($_64bit) {
13923: $e=(($e<<32)>>32);
13924: $f=(($f<<32)>>32);
13925: }
13926: }
13927: if (wantarray) {
13928: return ($e,$f);
13929: } else {
13930: my $g;
13931: {
13932: use integer;
13933: $g=($e+$f);
13934: if ($_64bit) {
13935: $g=(($g<<32)>>32);
13936: }
13937: }
13938: return $g;
13939: }
13940: }
13941:
13942: sub latest_rnd_algorithm_id {
13943: return '64bit5';
13944: }
13945:
13946: sub get_rand_alg {
13947: my ($courseid)=@_;
13948: if (!$courseid) { $courseid=(&whichuser())[1]; }
13949: if ($courseid) {
13950: return $env{"course.$courseid.rndseed"};
13951: }
13952: return &latest_rnd_algorithm_id();
13953: }
13954:
13955: sub validCODE {
13956: my ($CODE)=@_;
13957: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
13958: return 0;
13959: }
13960:
13961: sub getCODE {
13962: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
13963: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
13964: defined($Apache::lonhomework::parsing_a_task) ) &&
13965: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
13966: return $Apache::lonhomework::history{'resource.CODE'};
13967: }
13968: return undef;
13969: }
13970: #
13971: # Determines the random seed for a specific context:
13972: #
13973: # parameters:
13974: # symb - in course context the symb for the seed.
13975: # course_id - The course id of the form domain_coursenum.
13976: # domain - Domain for the user.
13977: # course - Course for the user.
13978: # cenv - environment of the course.
13979: #
13980: # NOTE:
13981: # All parameters are picked out of the environment if missing
13982: # or not defined.
13983: # If a symb cannot be determined the current time is used instead.
13984: #
13985: # For a given well defined symb, courside, domain, username,
13986: # and course environment, the seed is reproducible.
13987: #
13988: sub rndseed {
13989: my ($symb,$courseid,$domain,$username, $cenv)=@_;
13990: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
13991: if (!defined($symb)) {
13992: unless ($symb=$wsymb) { return time; }
13993: }
13994: if (!defined $courseid) {
13995: $courseid=$wcourseid;
13996: }
13997: if (!defined $domain) { $domain=$wdomain; }
13998: if (!defined $username) { $username=$wusername }
13999:
14000: my $which;
14001: if (defined($cenv->{'rndseed'})) {
14002: $which = $cenv->{'rndseed'};
14003: } else {
14004: $which =&get_rand_alg($courseid);
14005: }
14006: if (defined(&getCODE())) {
14007:
14008: if ($which eq '64bit5') {
14009: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
14010: } elsif ($which eq '64bit4') {
14011: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
14012: } else {
14013: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
14014: }
14015: } elsif ($which eq '64bit5') {
14016: return &rndseed_64bit5($symb,$courseid,$domain,$username);
14017: } elsif ($which eq '64bit4') {
14018: return &rndseed_64bit4($symb,$courseid,$domain,$username);
14019: } elsif ($which eq '64bit3') {
14020: return &rndseed_64bit3($symb,$courseid,$domain,$username);
14021: } elsif ($which eq '64bit2') {
14022: return &rndseed_64bit2($symb,$courseid,$domain,$username);
14023: } elsif ($which eq '64bit') {
14024: return &rndseed_64bit($symb,$courseid,$domain,$username);
14025: }
14026: return &rndseed_32bit($symb,$courseid,$domain,$username);
14027: }
14028:
14029: sub rndseed_32bit {
14030: my ($symb,$courseid,$domain,$username)=@_;
14031: {
14032: use integer;
14033: my $symbchck=unpack("%32C*",$symb) << 27;
14034: my $symbseed=numval($symb) << 22;
14035: my $namechck=unpack("%32C*",$username) << 17;
14036: my $nameseed=numval($username) << 12;
14037: my $domainseed=unpack("%32C*",$domain) << 7;
14038: my $courseseed=unpack("%32C*",$courseid);
14039: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
14040: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14041: #&logthis("rndseed :$num:$symb");
14042: if ($_64bit) { $num=(($num<<32)>>32); }
14043: return $num;
14044: }
14045: }
14046:
14047: sub rndseed_64bit {
14048: my ($symb,$courseid,$domain,$username)=@_;
14049: {
14050: use integer;
14051: my $symbchck=unpack("%32S*",$symb) << 21;
14052: my $symbseed=numval($symb) << 10;
14053: my $namechck=unpack("%32S*",$username);
14054:
14055: my $nameseed=numval($username) << 21;
14056: my $domainseed=unpack("%32S*",$domain) << 10;
14057: my $courseseed=unpack("%32S*",$courseid);
14058:
14059: my $num1=$symbchck+$symbseed+$namechck;
14060: my $num2=$nameseed+$domainseed+$courseseed;
14061: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14062: #&logthis("rndseed :$num:$symb");
14063: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14064: return "$num1,$num2";
14065: }
14066: }
14067:
14068: sub rndseed_64bit2 {
14069: my ($symb,$courseid,$domain,$username)=@_;
14070: {
14071: use integer;
14072: # strings need to be an even # of cahracters long, it it is odd the
14073: # last characters gets thrown away
14074: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14075: my $symbseed=numval($symb) << 10;
14076: my $namechck=unpack("%32S*",$username.' ');
14077:
14078: my $nameseed=numval($username) << 21;
14079: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14080: my $courseseed=unpack("%32S*",$courseid.' ');
14081:
14082: my $num1=$symbchck+$symbseed+$namechck;
14083: my $num2=$nameseed+$domainseed+$courseseed;
14084: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14085: #&logthis("rndseed :$num:$symb");
14086: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14087: return "$num1,$num2";
14088: }
14089: }
14090:
14091: sub rndseed_64bit3 {
14092: my ($symb,$courseid,$domain,$username)=@_;
14093: {
14094: use integer;
14095: # strings need to be an even # of cahracters long, it it is odd the
14096: # last characters gets thrown away
14097: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14098: my $symbseed=numval2($symb) << 10;
14099: my $namechck=unpack("%32S*",$username.' ');
14100:
14101: my $nameseed=numval2($username) << 21;
14102: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14103: my $courseseed=unpack("%32S*",$courseid.' ');
14104:
14105: my $num1=$symbchck+$symbseed+$namechck;
14106: my $num2=$nameseed+$domainseed+$courseseed;
14107: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14108: #&logthis("rndseed :$num1:$num2:$_64bit");
14109: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14110:
14111: return "$num1:$num2";
14112: }
14113: }
14114:
14115: sub rndseed_64bit4 {
14116: my ($symb,$courseid,$domain,$username)=@_;
14117: {
14118: use integer;
14119: # strings need to be an even # of cahracters long, it it is odd the
14120: # last characters gets thrown away
14121: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14122: my $symbseed=numval3($symb) << 10;
14123: my $namechck=unpack("%32S*",$username.' ');
14124:
14125: my $nameseed=numval3($username) << 21;
14126: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14127: my $courseseed=unpack("%32S*",$courseid.' ');
14128:
14129: my $num1=$symbchck+$symbseed+$namechck;
14130: my $num2=$nameseed+$domainseed+$courseseed;
14131: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14132: #&logthis("rndseed :$num1:$num2:$_64bit");
14133: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14134:
14135: return "$num1:$num2";
14136: }
14137: }
14138:
14139: sub rndseed_64bit5 {
14140: my ($symb,$courseid,$domain,$username)=@_;
14141: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
14142: return "$num1:$num2";
14143: }
14144:
14145: sub rndseed_CODE_64bit {
14146: my ($symb,$courseid,$domain,$username)=@_;
14147: {
14148: use integer;
14149: my $symbchck=unpack("%32S*",$symb.' ') << 16;
14150: my $symbseed=numval2($symb);
14151: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
14152: my $CODEseed=numval(&getCODE());
14153: my $courseseed=unpack("%32S*",$courseid.' ');
14154: my $num1=$symbseed+$CODEchck;
14155: my $num2=$CODEseed+$courseseed+$symbchck;
14156: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
14157: #&logthis("rndseed :$num1:$num2:$symb");
14158: if ($_64bit) { $num1=(($num1<<32)>>32); }
14159: if ($_64bit) { $num2=(($num2<<32)>>32); }
14160: return "$num1:$num2";
14161: }
14162: }
14163:
14164: sub rndseed_CODE_64bit4 {
14165: my ($symb,$courseid,$domain,$username)=@_;
14166: {
14167: use integer;
14168: my $symbchck=unpack("%32S*",$symb.' ') << 16;
14169: my $symbseed=numval3($symb);
14170: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
14171: my $CODEseed=numval3(&getCODE());
14172: my $courseseed=unpack("%32S*",$courseid.' ');
14173: my $num1=$symbseed+$CODEchck;
14174: my $num2=$CODEseed+$courseseed+$symbchck;
14175: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
14176: #&logthis("rndseed :$num1:$num2:$symb");
14177: if ($_64bit) { $num1=(($num1<<32)>>32); }
14178: if ($_64bit) { $num2=(($num2<<32)>>32); }
14179: return "$num1:$num2";
14180: }
14181: }
14182:
14183: sub rndseed_CODE_64bit5 {
14184: my ($symb,$courseid,$domain,$username)=@_;
14185: my $code = &getCODE();
14186: my ($num1,$num2)=&digest("$symb,$courseid,$code");
14187: return "$num1:$num2";
14188: }
14189:
14190: sub setup_random_from_rndseed {
14191: my ($rndseed)=@_;
14192: if ($rndseed =~/([,:])/) {
14193: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
14194: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
14195: &Math::Random::random_set_seed_from_phrase($rndseed);
14196: } else {
14197: &Math::Random::random_set_seed($num1,$num2);
14198: }
14199: } else {
14200: &Math::Random::random_set_seed_from_phrase($rndseed);
14201: }
14202: }
14203:
14204: sub latest_receipt_algorithm_id {
14205: return 'receipt3';
14206: }
14207:
14208: sub recunique {
14209: my $fucourseid=shift;
14210: my $unique;
14211: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
14212: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
14213: $unique=$env{"course.$fucourseid.internal.encseed"};
14214: } else {
14215: $unique=$perlvar{'lonReceipt'};
14216: }
14217: return unpack("%32C*",$unique);
14218: }
14219:
14220: sub recprefix {
14221: my $fucourseid=shift;
14222: my $prefix;
14223: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
14224: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
14225: $prefix=$env{"course.$fucourseid.internal.encpref"};
14226: } else {
14227: $prefix=$perlvar{'lonHostID'};
14228: }
14229: return unpack("%32C*",$prefix);
14230: }
14231:
14232: sub ireceipt {
14233: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
14234:
14235: my $return =&recprefix($fucourseid).'-';
14236:
14237: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
14238: $env{'request.state'} eq 'construct') {
14239: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
14240: return $return;
14241: }
14242:
14243: my $cuname=unpack("%32C*",$funame);
14244: my $cudom=unpack("%32C*",$fudom);
14245: my $cucourseid=unpack("%32C*",$fucourseid);
14246: my $cusymb=unpack("%32C*",$fusymb);
14247: my $cunique=&recunique($fucourseid);
14248: my $cpart=unpack("%32S*",$part);
14249: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
14250:
14251: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
14252:
14253: $return.= ($cunique%$cuname+
14254: $cunique%$cudom+
14255: $cusymb%$cuname+
14256: $cusymb%$cudom+
14257: $cucourseid%$cuname+
14258: $cucourseid%$cudom+
14259: $cpart%$cuname+
14260: $cpart%$cudom);
14261: } else {
14262: $return.= ($cunique%$cuname+
14263: $cunique%$cudom+
14264: $cusymb%$cuname+
14265: $cusymb%$cudom+
14266: $cucourseid%$cuname+
14267: $cucourseid%$cudom);
14268: }
14269: return $return;
14270: }
14271:
14272: sub receipt {
14273: my ($part)=@_;
14274: my ($symb,$courseid,$domain,$name) = &whichuser();
14275: return &ireceipt($name,$domain,$courseid,$symb,$part);
14276: }
14277:
14278: sub whichuser {
14279: my ($passedsymb)=@_;
14280: my ($symb,$courseid,$domain,$name,$publicuser);
14281: if (defined($env{'form.grade_symb'})) {
14282: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
14283: my $allowed=&allowed('vgr',$tmp_courseid);
14284: if (!$allowed &&
14285: exists($env{'request.course.sec'}) &&
14286: $env{'request.course.sec'} !~ /^\s*$/) {
14287: $allowed=&allowed('vgr',$tmp_courseid.
14288: '/'.$env{'request.course.sec'});
14289: }
14290: if ($allowed) {
14291: ($symb)=&get_env_multiple('form.grade_symb');
14292: $courseid=$tmp_courseid;
14293: ($domain)=&get_env_multiple('form.grade_domain');
14294: ($name)=&get_env_multiple('form.grade_username');
14295: return ($symb,$courseid,$domain,$name,$publicuser);
14296: }
14297: }
14298: if (!$passedsymb) {
14299: $symb=&symbread();
14300: } else {
14301: $symb=$passedsymb;
14302: }
14303: $courseid=$env{'request.course.id'};
14304: $domain=$env{'user.domain'};
14305: $name=$env{'user.name'};
14306: if ($name eq 'public' && $domain eq 'public') {
14307: if (!defined($env{'form.username'})) {
14308: $env{'form.username'}.=time.rand(10000000);
14309: }
14310: $name.=$env{'form.username'};
14311: }
14312: return ($symb,$courseid,$domain,$name,$publicuser);
14313:
14314: }
14315:
14316: # ------------------------------------------------------------ Serves up a file
14317: # returns either the contents of the file or
14318: # -1 if the file doesn't exist
14319: #
14320: # if the target is a file that was uploaded via DOCS,
14321: # a check will be made to see if a current copy exists on the local server,
14322: # if it does this will be served, otherwise a copy will be retrieved from
14323: # the home server for the course and stored in /home/httpd/html/userfiles on
14324: # the local server.
14325:
14326: sub getfile {
14327: my ($file) = @_;
14328: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
14329: &repcopy($file);
14330: return &readfile($file);
14331: }
14332:
14333: sub repcopy_userfile {
14334: my ($file)=@_;
14335: my $londocroot = $perlvar{'lonDocRoot'};
14336: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
14337: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
14338: my ($cdom,$cnum,$filename) =
14339: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
14340: my $uri="/uploaded/$cdom/$cnum/$filename";
14341: if (-e "$file") {
14342: # we already have a local copy, check it out
14343: my @fileinfo = stat($file);
14344: my $rtncode;
14345: my $info;
14346: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
14347: if ($lwpresp ne 'ok') {
14348: # there is no such file anymore, even though we had a local copy
14349: if ($rtncode eq '404') {
14350: unlink($file);
14351: }
14352: return -1;
14353: }
14354: if ($info < $fileinfo[9]) {
14355: # nice, the file we have is up-to-date, just say okay
14356: return 'ok';
14357: } else {
14358: # the file is outdated, get rid of it
14359: unlink($file);
14360: }
14361: }
14362: # one way or the other, at this point, we don't have the file
14363: # construct the correct path for the file
14364: my @parts = ($cdom,$cnum);
14365: if ($filename =~ m|^(.+)/[^/]+$|) {
14366: push @parts, split(/\//,$1);
14367: }
14368: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
14369: foreach my $part (@parts) {
14370: $path .= '/'.$part;
14371: if (!-e $path) {
14372: mkdir($path,0770);
14373: }
14374: }
14375: # now the path exists for sure
14376: # get a user agent
14377: my $transferfile=$file.'.in.transfer';
14378: # FIXME: this should flock
14379: if (-e $transferfile) { return 'ok'; }
14380: my $request;
14381: $uri=~s/^\///;
14382: my $homeserver = &homeserver($cnum,$cdom);
14383: my $hostname = &hostname($homeserver);
14384: my $protocol = $protocol{$homeserver};
14385: $protocol = 'http' if ($protocol ne 'https');
14386: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
14387: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
14388: # did it work?
14389: if ($response->is_error()) {
14390: unlink($transferfile);
14391: &logthis("Userfile repcopy failed for $uri");
14392: return -1;
14393: }
14394: # worked, rename the transfer file
14395: rename($transferfile,$file);
14396: return 'ok';
14397: }
14398:
14399: sub tokenwrapper {
14400: my $uri=shift;
14401: $uri=~s|^https?\://([^/]+)||;
14402: $uri=~s|^/||;
14403: $env{'user.environment'}=~/\/([^\/]+)\.id/;
14404: my $token=$1;
14405: my (undef,$udom,$uname,$file)=split('/',$uri,4);
14406: if ($udom && $uname && $file) {
14407: $file=~s|(\?\.*)*$||;
14408: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
14409: my $homeserver = &homeserver($uname,$udom);
14410: my $hostname = &hostname($homeserver);
14411: my $protocol = $protocol{$homeserver};
14412: $protocol = 'http' if ($protocol ne 'https');
14413: return $protocol.'://'.$hostname.'/'.$uri.
14414: (($uri=~/\?/)?'&':'?').'token='.$token.
14415: '&tokenissued='.$perlvar{'lonHostID'};
14416: } else {
14417: return '/adm/notfound.html';
14418: }
14419: }
14420:
14421: # call with reqtype HEAD: get last modification time
14422: # call with reqtype GET: get the file contents
14423: # Do not call this with reqtype GET for large files! It loads everything into memory
14424: #
14425: sub getuploaded {
14426: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
14427: $uri=~s/^\///;
14428: my $homeserver = &homeserver($cnum,$cdom);
14429: my $hostname = &hostname($homeserver);
14430: my $protocol = $protocol{$homeserver};
14431: $protocol = 'http' if ($protocol ne 'https');
14432: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
14433: my $request=new HTTP::Request($reqtype,$uri);
14434: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
14435: $$rtncode = $response->code;
14436: if (! $response->is_success()) {
14437: return 'failed';
14438: }
14439: if ($reqtype eq 'HEAD') {
14440: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
14441: } elsif ($reqtype eq 'GET') {
14442: $$info = $response->content;
14443: }
14444: return 'ok';
14445: }
14446:
14447: sub readfile {
14448: my $file = shift;
14449: if ( (! -e $file ) || ($file eq '') ) { return -1; };
14450: my $fh;
14451: open($fh,"<",$file);
14452: my $a='';
14453: while (my $line = <$fh>) { $a .= $line; }
14454: return $a;
14455: }
14456:
14457: sub filelocation {
14458: my ($dir,$file) = @_;
14459: my $location;
14460: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
14461:
14462: if ($file =~ m-^/adm/-) {
14463: $file=~s-^/adm/wrapper/-/-;
14464: $file=~s-^/adm/coursedocs/showdoc/-/-;
14465: }
14466:
14467: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
14468: $location = $file;
14469: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
14470: my ($udom,$uname,$filename)=
14471: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
14472: my $home=&homeserver($uname,$udom);
14473: my $is_me=0;
14474: my @ids=¤t_machine_ids();
14475: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
14476: if ($is_me) {
14477: $location=propath($udom,$uname).'/userfiles/'.$filename;
14478: } else {
14479: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
14480: $udom.'/'.$uname.'/'.$filename;
14481: }
14482: } elsif ($file =~ m-^/adm/-) {
14483: $location = $perlvar{'lonDocRoot'}.'/'.$file;
14484: } else {
14485: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
14486: $file=~s:^/(res|priv)/:/:;
14487: my $space=$1;
14488: if ( !( $file =~ m:^/:) ) {
14489: $location = $dir. '/'.$file;
14490: } else {
14491: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
14492: }
14493: }
14494: $location=~s://+:/:g; # remove duplicate /
14495: while ($location=~m{/\.\./}) {
14496: if ($location =~ m{/[^/]+/\.\./}) {
14497: $location=~ s{/[^/]+/\.\./}{/}g;
14498: } else {
14499: $location=~ s{/\.\./}{/}g;
14500: }
14501: } #remove dir/..
14502: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
14503: return $location;
14504: }
14505:
14506: sub hreflocation {
14507: my ($dir,$file)=@_;
14508: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
14509: $file=filelocation($dir,$file);
14510: } elsif ($file=~m-^/adm/-) {
14511: $file=~s-^/adm/wrapper/-/-;
14512: $file=~s-^/adm/coursedocs/showdoc/-/-;
14513: }
14514: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
14515: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
14516: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
14517: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
14518: {/uploaded/$1/$2/}x;
14519: }
14520: if ($file=~ m{^/userfiles/}) {
14521: $file =~ s{^/userfiles/}{/uploaded/};
14522: }
14523: return $file;
14524: }
14525:
14526:
14527:
14528:
14529:
14530: sub current_machine_domains {
14531: return &machine_domains(&hostname($perlvar{'lonHostID'}));
14532: }
14533:
14534: sub machine_domains {
14535: my ($hostname) = @_;
14536: my @domains;
14537: my %hostname = &all_hostnames();
14538: while( my($id, $name) = each(%hostname)) {
14539: # &logthis("-$id-$name-$hostname-");
14540: if ($hostname eq $name) {
14541: push(@domains,&host_domain($id));
14542: }
14543: }
14544: return @domains;
14545: }
14546:
14547: sub current_machine_ids {
14548: return &machine_ids(&hostname($perlvar{'lonHostID'}));
14549: }
14550:
14551: sub machine_ids {
14552: my ($hostname) = @_;
14553: $hostname ||= &hostname($perlvar{'lonHostID'});
14554: my @ids;
14555: my %name_to_host = &all_names();
14556: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
14557: return @{ $name_to_host{$hostname} };
14558: }
14559: return;
14560: }
14561:
14562: sub additional_machine_domains {
14563: my @domains;
14564: if (-e "$perlvar{'lonTabDir'}/expected_domains.tab") {
14565: if (open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab")) {
14566: while (my $line = <$fh>) {
14567: chomp($line);
14568: $line =~ s/\s//g;
14569: push(@domains,$line);
14570: }
14571: close($fh);
14572: }
14573: }
14574: return @domains;
14575: }
14576:
14577: sub default_login_domain {
14578: my $domain = $perlvar{'lonDefDomain'};
14579: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
14580: foreach my $posdom (¤t_machine_domains(),
14581: &additional_machine_domains()) {
14582: if (lc($posdom) eq lc($testdomain)) {
14583: $domain=$posdom;
14584: last;
14585: }
14586: }
14587: return $domain;
14588: }
14589:
14590: sub shared_institution {
14591: my ($dom,$lonhost) = @_;
14592: if ($lonhost eq '') {
14593: $lonhost = $perlvar{'lonHostID'};
14594: }
14595: my $same_intdom;
14596: my $hostintdom = &internet_dom($lonhost);
14597: if ($hostintdom ne '') {
14598: my %iphost = &get_iphost();
14599: my $primary_id = &domain($dom,'primary');
14600: my $primary_ip = &get_host_ip($primary_id);
14601: if (ref($iphost{$primary_ip}) eq 'ARRAY') {
14602: foreach my $id (@{$iphost{$primary_ip}}) {
14603: my $intdom = &internet_dom($id);
14604: if ($intdom eq $hostintdom) {
14605: $same_intdom = 1;
14606: last;
14607: }
14608: }
14609: }
14610: }
14611: return $same_intdom;
14612: }
14613:
14614: sub uses_sts {
14615: my ($ignore_cache) = @_;
14616: my $lonhost = $perlvar{'lonHostID'};
14617: my $hostname = &hostname($lonhost);
14618: my $sts_on;
14619: if ($protocol{$lonhost} eq 'https') {
14620: my $cachetime = 12*3600;
14621: if (!$ignore_cache) {
14622: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
14623: if (defined($cached)) {
14624: return $sts_on;
14625: }
14626: }
14627: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
14628: my $request=new HTTP::Request('HEAD',$url);
14629: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
14630: if ($response->is_success) {
14631: my $has_sts = $response->header('Strict-Transport-Security');
14632: if ($has_sts eq '') {
14633: $sts_on = 0;
14634: } else {
14635: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
14636: my $maxage = $1;
14637: if ($maxage) {
14638: $sts_on = 1;
14639: } else {
14640: $sts_on = 0;
14641: }
14642: } else {
14643: $sts_on = 0;
14644: }
14645: }
14646: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
14647: }
14648: }
14649: return;
14650: }
14651:
14652: sub waf_allssl {
14653: my ($host_name) = @_;
14654: my $alias = &get_proxy_alias();
14655: if ($host_name eq '') {
14656: $host_name = $ENV{'SERVER_NAME'};
14657: }
14658: if (($host_name ne '') && ($alias eq $host_name)) {
14659: my $serverhomedom = &host_domain($perlvar{'lonHostID'});
14660: my %defdomdefaults = &get_domain_defaults($serverhomedom);
14661: if ($defdomdefaults{'waf_sslopt'}) {
14662: return $defdomdefaults{'waf_sslopt'};
14663: }
14664: }
14665: return;
14666: }
14667:
14668: sub get_requestor_ip {
14669: my ($r,$nolookup,$noproxy) = @_;
14670: my $from_ip;
14671: if (ref($r)) {
14672: if ($r->can('useragent_ip')) {
14673: if ($noproxy && $r->can('client_ip')) {
14674: $from_ip = $r->client_ip();
14675: } else {
14676: $from_ip = $r->useragent_ip();
14677: }
14678: } elsif ($r->connection->can('remote_ip')) {
14679: $from_ip = $r->connection->remote_ip();
14680: } else {
14681: $from_ip = $r->get_remote_host($nolookup);
14682: }
14683: } else {
14684: $from_ip = $ENV{'REMOTE_ADDR'};
14685: }
14686: return $from_ip if ($noproxy);
14687: # Who controls proxy settings for server
14688: my $dom_in_use = $Apache::lonnet::perlvar{'lonDefDomain'};
14689: my $proxyinfo = &get_proxy_settings($dom_in_use);
14690: if ((ref($proxyinfo) eq 'HASH') && ($from_ip)) {
14691: if ($proxyinfo->{'vpnint'}) {
14692: if (&ip_match($from_ip,$proxyinfo->{'vpnint'})) {
14693: return $from_ip;
14694: }
14695: }
14696: if ($proxyinfo->{'trusted'}) {
14697: if (&ip_match($from_ip,$proxyinfo->{'trusted'})) {
14698: my $ipheader = $proxyinfo->{'ipheader'};
14699: my ($ip,$xfor);
14700: if (ref($r)) {
14701: if ($ipheader) {
14702: $ip = $r->headers_in->{$ipheader};
14703: }
14704: $xfor = $r->headers_in->{'X-Forwarded-For'};
14705: } else {
14706: if ($ipheader) {
14707: $ip = $ENV{'HTTP_'.uc($ipheader)};
14708: }
14709: $xfor = $ENV{'HTTP_X_FORWARDED_FOR'};
14710: }
14711: if (($ip eq '') && ($xfor ne '')) {
14712: foreach my $poss_ip (reverse(split(/\s*,\s*/,$xfor))) {
14713: unless (&ip_match($poss_ip,$proxyinfo->{'trusted'})) {
14714: $ip = $poss_ip;
14715: last;
14716: }
14717: }
14718: }
14719: if ($ip ne '') {
14720: return $ip;
14721: }
14722: }
14723: }
14724: }
14725: return $from_ip;
14726: }
14727:
14728: sub get_proxy_settings {
14729: my ($dom_in_use) = @_;
14730: my %domdefaults = &Apache::lonnet::get_domain_defaults($dom_in_use);
14731: my $proxyinfo = {
14732: ipheader => $domdefaults{'waf_ipheader'},
14733: trusted => $domdefaults{'waf_trusted'},
14734: vpnint => $domdefaults{'waf_vpnint'},
14735: vpnext => $domdefaults{'waf_vpnext'},
14736: sslopt => $domdefaults{'waf_sslopt'},
14737: };
14738: return $proxyinfo;
14739: }
14740:
14741: sub ip_match {
14742: my ($ip,$pattern_str) = @_;
14743: $ip=Net::CIDR::cidrvalidate($ip);
14744: if ($ip) {
14745: return Net::CIDR::cidrlookup($ip,split(/\s*,\s*/,$pattern_str));
14746: }
14747: return;
14748: }
14749:
14750: sub get_proxy_alias {
14751: my ($lonid) = @_;
14752: if ($lonid eq '') {
14753: $lonid = $perlvar{'lonHostID'};
14754: }
14755: if (!defined(&hostname($lonid))) {
14756: return;
14757: }
14758: if ($lonid ne '') {
14759: my ($alias,$cached) = &is_cached_new('proxyalias',$lonid);
14760: if ($cached) {
14761: return $alias;
14762: }
14763: my $dom = &Apache::lonnet::host_domain($lonid);
14764: if ($dom ne '') {
14765: my $cachetime = 60*60*24;
14766: my %domconfig =
14767: &Apache::lonnet::get_dom('configuration',['wafproxy'],$dom);
14768: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
14769: if (ref($domconfig{'wafproxy'}{'alias'}) eq 'HASH') {
14770: $alias = $domconfig{'wafproxy'}{'alias'}{$lonid};
14771: }
14772: }
14773: return &do_cache_new('proxyalias',$lonid,$alias,$cachetime);
14774: }
14775: }
14776: return;
14777: }
14778:
14779: sub use_proxy_alias {
14780: my ($r,$lonid) = @_;
14781: my $alias = &get_proxy_alias($lonid);
14782: if ($alias) {
14783: my $dom = &host_domain($lonid);
14784: if ($dom ne '') {
14785: my $proxyinfo = &get_proxy_settings($dom);
14786: my ($vpnint,$remote_ip);
14787: if (ref($proxyinfo) eq 'HASH') {
14788: $vpnint = $proxyinfo->{'vpnint'};
14789: if ($vpnint) {
14790: $remote_ip = &get_requestor_ip($r,1,1);
14791: }
14792: }
14793: unless ($vpnint && &ip_match($remote_ip,$vpnint)) {
14794: return $alias;
14795: }
14796: }
14797: }
14798: return;
14799: }
14800:
14801: sub alias_sso {
14802: my ($lonid) = @_;
14803: if ($lonid eq '') {
14804: $lonid = $perlvar{'lonHostID'};
14805: }
14806: if (!defined(&hostname($lonid))) {
14807: return;
14808: }
14809: if ($lonid ne '') {
14810: my ($use_alias,$cached) = &is_cached_new('proxysaml',$lonid);
14811: if ($cached) {
14812: return $use_alias;
14813: }
14814: my $dom = &Apache::lonnet::host_domain($lonid);
14815: if ($dom ne '') {
14816: my $cachetime = 60*60*24;
14817: my %domconfig =
14818: &Apache::lonnet::get_dom('configuration',['wafproxy'],$dom);
14819: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
14820: if (ref($domconfig{'wafproxy'}{'saml'}) eq 'HASH') {
14821: $use_alias = $domconfig{'wafproxy'}{'saml'}{$lonid};
14822: }
14823: }
14824: return &do_cache_new('proxysaml',$lonid,$use_alias,$cachetime);
14825: }
14826: }
14827: return;
14828: }
14829:
14830: sub get_saml_landing {
14831: my ($lonid) = @_;
14832: if ($lonid eq '') {
14833: my $defdom = &default_login_domain();
14834: my @hosts = ¤t_machine_ids();
14835: if (@hosts > 1) {
14836: foreach my $hostid (@hosts) {
14837: if (&host_domain($hostid) eq $defdom) {
14838: $lonid = $hostid;
14839: last;
14840: }
14841: }
14842: } else {
14843: $lonid = $perlvar{'lonHostID'};
14844: }
14845: if ($lonid) {
14846: unless (&Apache::lonnet::host_domain($lonid) eq $defdom) {
14847: return;
14848: }
14849: } else {
14850: return;
14851: }
14852: } elsif (!defined(&hostname($lonid))) {
14853: return;
14854: }
14855: my ($landing,$cached) = &is_cached_new('samllanding',$lonid);
14856: if ($cached) {
14857: return $landing;
14858: }
14859: my $dom = &Apache::lonnet::host_domain($lonid);
14860: if ($dom ne '') {
14861: my $cachetime = 60*60*24;
14862: my %domconfig =
14863: &Apache::lonnet::get_dom('configuration',['login'],$dom);
14864: if (ref($domconfig{'login'}) eq 'HASH') {
14865: if (ref($domconfig{'login'}{'saml'}) eq 'HASH') {
14866: if (ref($domconfig{'login'}{'saml'}{$lonid}) eq 'HASH') {
14867: $landing = 1;
14868: }
14869: }
14870: }
14871: return &do_cache_new('samllanding',$lonid,$landing,$cachetime);
14872: }
14873: return;
14874: }
14875:
14876: # ------------------------------------------------------------- Declutters URLs
14877:
14878: sub declutter {
14879: my $thisfn=shift;
14880: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14881: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
14882: $thisfn=~s{^/home/httpd/html}{};
14883: }
14884: $thisfn=~s/^\///;
14885: $thisfn=~s|^adm/wrapper/||;
14886: $thisfn=~s|^adm/coursedocs/showdoc/||;
14887: $thisfn=~s/^res\///;
14888: $thisfn=~s/^priv\///;
14889: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
14890: $thisfn=~s/\?.+$//;
14891: }
14892: return $thisfn;
14893: }
14894:
14895: # ------------------------------------------------------------- Clutter up URLs
14896:
14897: sub clutter {
14898: my $thisfn='/'.&declutter(shift);
14899: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
14900: || $thisfn =~ m{^/adm/(includes|pages)} ) {
14901: $thisfn='/res'.$thisfn;
14902: }
14903: if ($thisfn !~m|^/adm|) {
14904: if ($thisfn =~ m|^/ext/|) {
14905: $thisfn='/adm/wrapper'.$thisfn;
14906: } else {
14907: my ($ext) = ($thisfn =~ /\.(\w+)$/);
14908: my $embstyle=&Apache::loncommon::fileembstyle($ext);
14909: if ($embstyle eq 'ssi'
14910: || ($embstyle eq 'hdn')
14911: || ($embstyle eq 'rat')
14912: || ($embstyle eq 'prv')
14913: || ($embstyle eq 'ign')) {
14914: #do nothing with these
14915: } elsif (($embstyle eq 'img')
14916: || ($embstyle eq 'emb')
14917: || ($embstyle eq 'wrp')) {
14918: $thisfn='/adm/wrapper'.$thisfn;
14919: } elsif ($embstyle eq 'unk'
14920: && $thisfn!~/\.(sequence|page)$/) {
14921: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
14922: } else {
14923: # &logthis("Got a blank emb style");
14924: }
14925: }
14926: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
14927: $thisfn='/adm/wrapper'.$thisfn;
14928: }
14929: return $thisfn;
14930: }
14931:
14932: sub clutter_with_no_wrapper {
14933: my $uri = &clutter(shift);
14934: if ($uri =~ m-^/adm/-) {
14935: $uri =~ s-^/adm/wrapper/-/-;
14936: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
14937: }
14938: return $uri;
14939: }
14940:
14941: sub freeze_escape {
14942: my ($value)=@_;
14943: if (ref($value)) {
14944: $value=&nfreeze($value);
14945: return '__FROZEN__'.&escape($value);
14946: }
14947: return &escape($value);
14948: }
14949:
14950:
14951: sub thaw_unescape {
14952: my ($value)=@_;
14953: if ($value =~ /^__FROZEN__/) {
14954: substr($value,0,10,undef);
14955: $value=&unescape($value);
14956: return &thaw($value);
14957: }
14958: return &unescape($value);
14959: }
14960:
14961: sub correct_line_ends {
14962: my ($result)=@_;
14963: $$result =~s/\r\n/\n/mg;
14964: $$result =~s/\r/\n/mg;
14965: }
14966: # ================================================================ Main Program
14967:
14968: sub goodbye {
14969: &logthis("Starting Shut down");
14970: #not converted to using infrastruture and probably shouldn't be
14971: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
14972: #converted
14973: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
14974: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
14975: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
14976: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
14977: #1.1 only
14978: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
14979: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
14980: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
14981: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
14982: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
14983: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
14984: &logthis(sprintf("%-20s is %s",'hits',$hits));
14985: &flushcourselogs();
14986: &logthis("Shutting down");
14987: }
14988:
14989: sub get_dns {
14990: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
14991: if (!$ignore_cache) {
14992: my ($content,$cached)=
14993: &Apache::lonnet::is_cached_new('dns',$url);
14994: if ($cached) {
14995: &$func($content,$hashref);
14996: return;
14997: }
14998: }
14999:
15000: my %alldns;
15001: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
15002: foreach my $dns (<$config>) {
15003: next if ($dns !~ /^\^(\S*)/x);
15004: my $line = $1;
15005: my ($host,$protocol) = split(/:/,$line);
15006: if ($protocol ne 'https') {
15007: $protocol = 'http';
15008: }
15009: $alldns{$host} = $protocol;
15010: }
15011: close($config);
15012: }
15013: while (%alldns) {
15014: my ($dns) = sort { $b cmp $a } keys(%alldns);
15015: my ($contents,@content);
15016: if ($dns eq Sys::Hostname::FQDN::fqdn()) {
15017: my $command = (split('/',$url))[3];
15018: my ($dir,$file) = &parse_getdns_url($command,$url);
15019: delete($alldns{$dns});
15020: next if (($dir eq '') || ($file eq ''));
15021: if (open(my $config,'<',"$dir/$file")) {
15022: @content = <$config>;
15023: close($config);
15024: }
15025: if ($url eq '/adm/dns/loncapaCRL') {
15026: $contents = join('',@content);
15027: }
15028: } else {
15029: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
15030: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
15031: delete($alldns{$dns});
15032: next if ($response->is_error());
15033: if ($url eq '/adm/dns/loncapaCRL') {
15034: $contents = $response->content;
15035: } else {
15036: @content = split("\n",$response->content);
15037: }
15038: }
15039: if ($url eq '/adm/dns/loncapaCRL') {
15040: return &$func($contents);
15041: } else {
15042: unless ($nocache) {
15043: &do_cache_new('dns',$url,\@content,30*24*60*60);
15044: }
15045: &$func(\@content,$hashref);
15046: return;
15047: }
15048: }
15049: my $which = (split('/',$url,4))[3];
15050: if ($which eq 'loncapaCRL') {
15051: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
15052: if (-e $diskfile) {
15053: &logthis("unable to contact DNS, on disk file $diskfile not updated");
15054: } else {
15055: &logthis("unable to contact DNS, no on disk file $diskfile available");
15056: }
15057: } else {
15058: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
15059: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
15060: my @content = <$config>;
15061: close($config);
15062: &$func(\@content,$hashref);
15063: }
15064: }
15065: return;
15066: }
15067:
15068: # ------------------------------------------------------Get DNS checksums file
15069: sub parse_dns_checksums_tab {
15070: my ($lines,$hashref) = @_;
15071: my $lonhost = $perlvar{'lonHostID'};
15072: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
15073: my $loncaparev = &get_server_loncaparev($machine_dom);
15074: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
15075: my $webconfdir = '/etc/httpd/conf';
15076: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
15077: $webconfdir = '/etc/apache2';
15078: } elsif ($distro =~ /^sles(\d+)$/) {
15079: if ($1 >= 10) {
15080: $webconfdir = '/etc/apache2';
15081: }
15082: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
15083: if ($1 >= 10.0) {
15084: $webconfdir = '/etc/apache2';
15085: }
15086: }
15087: my ($release,$timestamp) = split(/\-/,$loncaparev);
15088: my (%chksum,%revnum);
15089: if (ref($lines) eq 'ARRAY') {
15090: chomp(@{$lines});
15091: my $version = shift(@{$lines});
15092: if ($version eq $release) {
15093: foreach my $line (@{$lines}) {
15094: my ($file,$version,$shasum) = split(/,/,$line);
15095: if ($file =~ m{^/etc/httpd/conf}) {
15096: if ($webconfdir eq '/etc/apache2') {
15097: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
15098: }
15099: }
15100: $chksum{$file} = $shasum;
15101: $revnum{$file} = $version;
15102: }
15103: if (ref($hashref) eq 'HASH') {
15104: %{$hashref} = (
15105: sums => \%chksum,
15106: versions => \%revnum,
15107: );
15108: }
15109: }
15110: }
15111: return;
15112: }
15113:
15114: sub fetch_dns_checksums {
15115: my %checksums;
15116: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
15117: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
15118: my ($release,$timestamp) = split(/\-/,$loncaparev);
15119: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
15120: \%checksums);
15121: return \%checksums;
15122: }
15123:
15124: sub fetch_crl_pemfile {
15125: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
15126: }
15127:
15128: sub save_crl_pem {
15129: my ($content) = @_;
15130: my ($msg,$hadchanges);
15131: if ($content ne '') {
15132: my $now = time;
15133: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
15134: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
15135: if (open(my $fh,'>',"$tmpcrl")) {
15136: print $fh $content;
15137: close($fh);
15138: if (-e $lonca) {
15139: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
15140: my $check = <PIPE>;
15141: close(PIPE);
15142: chomp($check);
15143: if ($check eq 'verify OK') {
15144: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
15145: my $backup;
15146: if (-e $dest) {
15147: if (&File::Copy::move($dest,"$dest.bak")) {
15148: $backup = 'ok';
15149: }
15150: }
15151: if (&File::Copy::move($tmpcrl,$dest)) {
15152: $msg = 'ok';
15153: if ($backup) {
15154: my (%oldnums,%newnums);
15155: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
15156: while (<PIPE>) {
15157: $oldnums{(split(/:/))[1]} = 1;
15158: }
15159: close(PIPE);
15160: }
15161: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
15162: while(<PIPE>) {
15163: $newnums{(split(/:/))[1]} = 1;
15164: }
15165: close(PIPE);
15166: }
15167: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
15168: unless (exists($oldnums{$key})) {
15169: $hadchanges = 1;
15170: last;
15171: }
15172: }
15173: unless ($hadchanges) {
15174: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
15175: unless (exists($newnums{$key})) {
15176: $hadchanges = 1;
15177: last;
15178: }
15179: }
15180: }
15181: }
15182: }
15183: } else {
15184: unlink($tmpcrl);
15185: }
15186: } else {
15187: unlink($tmpcrl);
15188: }
15189: } else {
15190: unlink($tmpcrl);
15191: }
15192: }
15193: }
15194: return ($msg,$hadchanges);
15195: }
15196:
15197: sub parse_getdns_url {
15198: my ($command,$url) = @_;
15199: my $dir = $perlvar{'lonTabDir'};
15200: my $file;
15201: if ($command eq 'hosts') {
15202: $file = 'dns_hosts.tab';
15203: } elsif ($command eq 'domain') {
15204: $file = 'dns_domain.tab';
15205: } elsif ($command eq 'checksums') {
15206: my $version = (split('/',$url))[4];
15207: $file = "dns_checksums/$version.tab",
15208: } elsif ($command eq 'loncapaCRL') {
15209: $dir = $perlvar{'lonCertificateDirectory'};
15210: $file = $perlvar{'lonnetCertRevocationList'};
15211: }
15212: return ($dir,$file);
15213: }
15214:
15215: # ------------------------------------------------------------ Read domain file
15216: {
15217: my $loaded;
15218: my %domain;
15219:
15220: sub parse_domain_tab {
15221: my ($lines) = @_;
15222: foreach my $line (@$lines) {
15223: next if ($line =~ /^(\#|\s*$ )/x);
15224:
15225: chomp($line);
15226: my ($name,@elements) = split(/:/,$line,9);
15227: my %this_domain;
15228: foreach my $field ('description', 'auth_def', 'auth_arg_def',
15229: 'lang_def', 'city', 'longi', 'lati',
15230: 'primary') {
15231: $this_domain{$field} = shift(@elements);
15232: }
15233: $domain{$name} = \%this_domain;
15234: }
15235: }
15236:
15237: sub reset_domain_info {
15238: undef($loaded);
15239: undef(%domain);
15240: }
15241:
15242: sub load_domain_tab {
15243: my ($ignore_cache,$nocache) = @_;
15244: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
15245: my $fh;
15246: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
15247: my @lines = <$fh>;
15248: &parse_domain_tab(\@lines);
15249: }
15250: close($fh);
15251: $loaded = 1;
15252: }
15253:
15254: sub domain {
15255: &load_domain_tab() if (!$loaded);
15256:
15257: my ($name,$what) = @_;
15258: return if ( !exists($domain{$name}) );
15259:
15260: if (!$what) {
15261: return $domain{$name}{'description'};
15262: }
15263: return $domain{$name}{$what};
15264: }
15265:
15266: sub domain_info {
15267: &load_domain_tab() if (!$loaded);
15268: return %domain;
15269: }
15270:
15271: }
15272:
15273:
15274: # ------------------------------------------------------------- Read hosts file
15275: {
15276: my %hostname;
15277: my %hostdom;
15278: my %libserv;
15279: my $loaded;
15280: my %name_to_host;
15281: my %internetdom;
15282: my %LC_dns_serv;
15283:
15284: sub parse_hosts_tab {
15285: my ($file) = @_;
15286: foreach my $configline (@$file) {
15287: next if ($configline =~ /^(\#|\s*$ )/x);
15288: chomp($configline);
15289: if ($configline =~ /^\^/) {
15290: if ($configline =~ /^\^([\w.\-]+)/) {
15291: $LC_dns_serv{$1} = 1;
15292: }
15293: next;
15294: }
15295: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
15296: $name=~s/\s//g;
15297: if ($id && $domain && $role && $name) {
15298: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
15299: my $curr = $hostname{$id};
15300: my $skip;
15301: if (ref($name_to_host{$curr}) eq 'ARRAY') {
15302: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
15303: $skip = 1;
15304: } else {
15305: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
15306: }
15307: }
15308: unless ($skip) {
15309: push(@{$name_to_host{$name}},$id);
15310: }
15311: } else {
15312: push(@{$name_to_host{$name}},$id);
15313: }
15314: $hostname{$id}=$name;
15315: $hostdom{$id}=$domain;
15316: if ($role eq 'library') { $libserv{$id}=$name; }
15317: if (defined($protocol)) {
15318: if ($protocol eq 'https') {
15319: $protocol{$id} = $protocol;
15320: } else {
15321: $protocol{$id} = 'http';
15322: }
15323: } else {
15324: $protocol{$id} = 'http';
15325: }
15326: if (defined($intdom)) {
15327: $internetdom{$id} = $intdom;
15328: }
15329: }
15330: }
15331: }
15332:
15333: sub reset_hosts_info {
15334: &purge_remembered();
15335: &reset_domain_info();
15336: &reset_hosts_ip_info();
15337: undef(%internetdom);
15338: undef(%name_to_host);
15339: undef(%hostname);
15340: undef(%hostdom);
15341: undef(%libserv);
15342: undef($loaded);
15343: }
15344:
15345: sub load_hosts_tab {
15346: my ($ignore_cache,$nocache) = @_;
15347: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
15348: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
15349: my @config = <$config>;
15350: &parse_hosts_tab(\@config);
15351: close($config);
15352: $loaded=1;
15353: }
15354:
15355: sub hostname {
15356: &load_hosts_tab() if (!$loaded);
15357:
15358: my ($lonid) = @_;
15359: return $hostname{$lonid};
15360: }
15361:
15362: sub all_hostnames {
15363: &load_hosts_tab() if (!$loaded);
15364:
15365: return %hostname;
15366: }
15367:
15368: sub all_names {
15369: my ($ignore_cache,$nocache) = @_;
15370: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
15371:
15372: return %name_to_host;
15373: }
15374:
15375: sub all_host_domain {
15376: &load_hosts_tab() if (!$loaded);
15377: return %hostdom;
15378: }
15379:
15380: sub all_host_intdom {
15381: &load_hosts_tab() if (!$loaded);
15382: return %internetdom;
15383: }
15384:
15385: sub is_library {
15386: &load_hosts_tab() if (!$loaded);
15387:
15388: return exists($libserv{$_[0]});
15389: }
15390:
15391: sub all_library {
15392: &load_hosts_tab() if (!$loaded);
15393:
15394: return %libserv;
15395: }
15396:
15397: sub unique_library {
15398: #2x reverse removes all hostnames that appear more than once
15399: my %unique = reverse &all_library();
15400: return reverse %unique;
15401: }
15402:
15403: sub get_servers {
15404: &load_hosts_tab() if (!$loaded);
15405:
15406: my ($domain,$type) = @_;
15407: my %possible_hosts = ($type eq 'library') ? %libserv
15408: : %hostname;
15409: my %result;
15410: if (ref($domain) eq 'ARRAY') {
15411: while ( my ($host,$hostname) = each(%possible_hosts)) {
15412: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
15413: $result{$host} = $hostname;
15414: }
15415: }
15416: } else {
15417: while ( my ($host,$hostname) = each(%possible_hosts)) {
15418: if ($hostdom{$host} eq $domain) {
15419: $result{$host} = $hostname;
15420: }
15421: }
15422: }
15423: return %result;
15424: }
15425:
15426: sub get_unique_servers {
15427: my %unique = reverse &get_servers(@_);
15428: return reverse %unique;
15429: }
15430:
15431: sub host_domain {
15432: &load_hosts_tab() if (!$loaded);
15433:
15434: my ($lonid) = @_;
15435: return $hostdom{$lonid};
15436: }
15437:
15438: sub all_domains {
15439: &load_hosts_tab() if (!$loaded);
15440:
15441: my %seen;
15442: my @uniq = grep(!$seen{$_}++, values(%hostdom));
15443: return @uniq;
15444: }
15445:
15446: sub internet_dom {
15447: &load_hosts_tab() if (!$loaded);
15448:
15449: my ($lonid) = @_;
15450: return $internetdom{$lonid};
15451: }
15452:
15453: sub is_LC_dns {
15454: &load_hosts_tab() if (!$loaded);
15455:
15456: my ($hostname) = @_;
15457: return exists($LC_dns_serv{$hostname});
15458: }
15459:
15460: }
15461:
15462: {
15463: my %iphost;
15464: my %name_to_ip;
15465: my %lonid_to_ip;
15466:
15467: sub get_hosts_from_ip {
15468: my ($ip) = @_;
15469: my %iphosts = &get_iphost();
15470: if (ref($iphosts{$ip})) {
15471: return @{$iphosts{$ip}};
15472: }
15473: return;
15474: }
15475:
15476: sub reset_hosts_ip_info {
15477: undef(%iphost);
15478: undef(%name_to_ip);
15479: undef(%lonid_to_ip);
15480: }
15481:
15482: sub get_host_ip {
15483: my ($lonid) = @_;
15484: if (exists($lonid_to_ip{$lonid})) {
15485: return $lonid_to_ip{$lonid};
15486: }
15487: my $name=&hostname($lonid);
15488: my $ip = gethostbyname($name);
15489: return if (!$ip || length($ip) ne 4);
15490: $ip=inet_ntoa($ip);
15491: $name_to_ip{$name} = $ip;
15492: $lonid_to_ip{$lonid} = $ip;
15493: return $ip;
15494: }
15495:
15496: sub get_iphost {
15497: my ($ignore_cache,$nocache) = @_;
15498:
15499: if (!$ignore_cache) {
15500: if (%iphost) {
15501: return %iphost;
15502: }
15503: my ($ip_info,$cached)=
15504: &Apache::lonnet::is_cached_new('iphost','iphost');
15505: if ($cached) {
15506: %iphost = %{$ip_info->[0]};
15507: %name_to_ip = %{$ip_info->[1]};
15508: %lonid_to_ip = %{$ip_info->[2]};
15509: return %iphost;
15510: }
15511: }
15512:
15513: # get yesterday's info for fallback
15514: my %old_name_to_ip;
15515: my ($ip_info,$cached)=
15516: &Apache::lonnet::is_cached_new('iphost','iphost');
15517: if ($cached) {
15518: %old_name_to_ip = %{$ip_info->[1]};
15519: }
15520:
15521: my %name_to_host = &all_names($ignore_cache,$nocache);
15522: foreach my $name (keys(%name_to_host)) {
15523: my $ip;
15524: if (!exists($name_to_ip{$name})) {
15525: $ip = gethostbyname($name);
15526: if (!$ip || length($ip) ne 4) {
15527: if (defined($old_name_to_ip{$name})) {
15528: $ip = $old_name_to_ip{$name};
15529: &logthis("Can't find $name defaulting to old $ip");
15530: } else {
15531: &logthis("Name $name no IP found");
15532: next;
15533: }
15534: } else {
15535: $ip=inet_ntoa($ip);
15536: }
15537: $name_to_ip{$name} = $ip;
15538: } else {
15539: $ip = $name_to_ip{$name};
15540: }
15541: foreach my $id (@{ $name_to_host{$name} }) {
15542: $lonid_to_ip{$id} = $ip;
15543: }
15544: push(@{$iphost{$ip}},@{$name_to_host{$name}});
15545: }
15546: unless ($nocache) {
15547: &do_cache_new('iphost','iphost',
15548: [\%iphost,\%name_to_ip,\%lonid_to_ip],
15549: 48*60*60);
15550: }
15551:
15552: return %iphost;
15553: }
15554:
15555: #
15556: # Given a DNS returns the loncapa host name for that DNS
15557: #
15558: sub host_from_dns {
15559: my ($dns) = @_;
15560: my @hosts;
15561: my $ip;
15562:
15563: if (exists($name_to_ip{$dns})) {
15564: $ip = $name_to_ip{$dns};
15565: }
15566: if (!$ip) {
15567: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
15568: if (length($ip) == 4) {
15569: $ip = &IO::Socket::inet_ntoa($ip);
15570: }
15571: }
15572: if ($ip) {
15573: @hosts = get_hosts_from_ip($ip);
15574: return $hosts[0];
15575: }
15576: return undef;
15577: }
15578:
15579: sub get_internet_names {
15580: my ($lonid) = @_;
15581: return if ($lonid eq '');
15582: my ($idnref,$cached)=
15583: &Apache::lonnet::is_cached_new('internetnames',$lonid);
15584: if ($cached) {
15585: return $idnref;
15586: }
15587: my $ip = &get_host_ip($lonid);
15588: my @hosts = &get_hosts_from_ip($ip);
15589: my %iphost = &get_iphost();
15590: my (@idns,%seen);
15591: foreach my $id (@hosts) {
15592: my $dom = &host_domain($id);
15593: my $prim_id = &domain($dom,'primary');
15594: my $prim_ip = &get_host_ip($prim_id);
15595: next if ($seen{$prim_ip});
15596: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
15597: foreach my $id (@{$iphost{$prim_ip}}) {
15598: my $intdom = &internet_dom($id);
15599: unless (grep(/^\Q$intdom\E$/,@idns)) {
15600: push(@idns,$intdom);
15601: }
15602: }
15603: }
15604: $seen{$prim_ip} = 1;
15605: }
15606: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
15607: }
15608:
15609: }
15610:
15611: sub all_loncaparevs {
15612: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
15613: }
15614:
15615: # ---------------------------------------------------------- Read loncaparev table
15616: {
15617: sub load_loncaparevs {
15618: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
15619: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
15620: while (my $configline=<$config>) {
15621: chomp($configline);
15622: my ($hostid,$loncaparev)=split(/:/,$configline);
15623: $loncaparevs{$hostid}=$loncaparev;
15624: }
15625: close($config);
15626: }
15627: }
15628: }
15629: }
15630:
15631: # ---------------------------------------------------------- Read serverhostID table
15632: {
15633: sub load_serverhomeIDs {
15634: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
15635: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
15636: while (my $configline=<$config>) {
15637: chomp($configline);
15638: my ($name,$id)=split(/:/,$configline);
15639: $serverhomeIDs{$name}=$id;
15640: }
15641: close($config);
15642: }
15643: }
15644: }
15645: }
15646:
15647:
15648: BEGIN {
15649:
15650: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
15651: unless ($readit) {
15652: {
15653: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
15654: %perlvar = (%perlvar,%{$configvars});
15655: }
15656:
15657:
15658: # ------------------------------------------------------ Read spare server file
15659: {
15660: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
15661:
15662: while (my $configline=<$config>) {
15663: chomp($configline);
15664: if ($configline) {
15665: my ($host,$type) = split(':',$configline,2);
15666: if (!defined($type) || $type eq '') { $type = 'default' };
15667: push(@{ $spareid{$type} }, $host);
15668: }
15669: }
15670: close($config);
15671: }
15672: # ------------------------------------------------------------ Read permissions
15673: {
15674: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
15675:
15676: while (my $configline=<$config>) {
15677: chomp($configline);
15678: if ($configline) {
15679: my ($role,$perm)=split(/ /,$configline);
15680: if ($perm ne '') { $pr{$role}=$perm; }
15681: }
15682: }
15683: close($config);
15684: }
15685:
15686: # -------------------------------------------- Read plain texts for permissions
15687: {
15688: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
15689:
15690: while (my $configline=<$config>) {
15691: chomp($configline);
15692: if ($configline) {
15693: my ($short,@plain)=split(/:/,$configline);
15694: %{$prp{$short}} = ();
15695: if (@plain > 0) {
15696: $prp{$short}{'std'} = $plain[0];
15697: for (my $i=1; $i<@plain; $i++) {
15698: $prp{$short}{'alt'.$i} = $plain[$i];
15699: }
15700: }
15701: }
15702: }
15703: close($config);
15704: }
15705:
15706: # ---------------------------------------------------------- Read package table
15707: {
15708: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
15709:
15710: while (my $configline=<$config>) {
15711: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
15712: chomp($configline);
15713: my ($short,$plain)=split(/:/,$configline);
15714: my ($pack,$name)=split(/\&/,$short);
15715: if ($plain ne '') {
15716: $packagetab{$pack.'&'.$name.'&name'}=$name;
15717: $packagetab{$short}=$plain;
15718: }
15719: }
15720: close($config);
15721: }
15722:
15723: # ---------------------------------------------------------- Read loncaparev table
15724:
15725: &load_loncaparevs();
15726:
15727: # ---------------------------------------------------------- Read serverhostID table
15728:
15729: &load_serverhomeIDs();
15730:
15731: # ---------------------------------------------------------- Read releaseslist XML
15732: {
15733: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
15734: if (-e $file) {
15735: my $parser = HTML::LCParser->new($file);
15736: while (my $token = $parser->get_token()) {
15737: if ($token->[0] eq 'S') {
15738: my $item = $token->[1];
15739: my $name = $token->[2]{'name'};
15740: my $value = $token->[2]{'value'};
15741: my $valuematch = $token->[2]{'valuematch'};
15742: my $namematch = $token->[2]{'namematch'};
15743: if ($item eq 'parameter') {
15744: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
15745: my $release = $parser->get_text();
15746: $release =~ s/(^\s*|\s*$ )//gx;
15747: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
15748: }
15749: } elsif ($item ne '' && $name ne '') {
15750: my $release = $parser->get_text();
15751: $release =~ s/(^\s*|\s*$ )//gx;
15752: $needsrelease{$item.':'.$name.':'.$value} = $release;
15753: }
15754: }
15755: }
15756: }
15757: }
15758:
15759: # ---------------------------------------------------------- Read managers table
15760: {
15761: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
15762: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
15763: while (my $configline=<$config>) {
15764: chomp($configline);
15765: next if ($configline =~ /^\#/);
15766: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
15767: $managerstab{$configline} = 1;
15768: }
15769: }
15770: close($config);
15771: }
15772: }
15773: }
15774:
15775: # ------------- set up temporary directory
15776: {
15777: $tmpdir = LONCAPA::tempdir();
15778:
15779: }
15780:
15781: # ------------- set default texengine (domain default overrides this)
15782: {
15783: $deftex = LONCAPA::texengine();
15784: }
15785:
15786: # ------------- set default minimum length for passwords for internal auth users
15787: {
15788: $passwdmin = LONCAPA::passwd_min();
15789: }
15790:
15791: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
15792: 'compress_threshold'=> 20_000,
15793: });
15794:
15795: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
15796: $dumpcount=0;
15797: $locknum=0;
15798:
15799: &logtouch();
15800: &logthis('<font color="yellow">INFO: Read configuration</font>');
15801: $readit=1;
15802: {
15803: use integer;
15804: my $test=(2**32)+1;
15805: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
15806: &logthis(" Detected 64bit platform ($_64bit)");
15807: }
15808: }
15809: }
15810:
15811: 1;
15812: __END__
15813:
15814: =pod
15815:
15816: =head1 NAME
15817:
15818: Apache::lonnet - Subroutines to ask questions about things in the network.
15819:
15820: =head1 SYNOPSIS
15821:
15822: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
15823:
15824: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
15825:
15826: Common parameters:
15827:
15828: =over 4
15829:
15830: =item *
15831:
15832: $uname : an internal username (if $cname expecting a course Id specifically)
15833:
15834: =item *
15835:
15836: $udom : a domain (if $cdom expecting a course's domain specifically)
15837:
15838: =item *
15839:
15840: $symb : a resource instance identifier
15841:
15842: =item *
15843:
15844: $namespace : the name of a .db file that contains the data needed or
15845: being set.
15846:
15847: =back
15848:
15849: =head1 OVERVIEW
15850:
15851: lonnet provides subroutines which interact with the
15852: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
15853: about classes, users, and resources.
15854:
15855: For many of these objects you can also use this to store data about
15856: them or modify them in various ways.
15857:
15858: =head2 Symbs
15859:
15860: To identify a specific instance of a resource, LON-CAPA uses symbols
15861: or "symbs"X<symb>. These identifiers are built from the URL of the
15862: map, the resource number of the resource in the map, and the URL of
15863: the resource itself. The latter is somewhat redundant, but might help
15864: if maps change.
15865:
15866: An example is
15867:
15868: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
15869:
15870: The respective map entry is
15871:
15872: <resource id="19" src="/res/msu/korte/tests/part12.problem"
15873: title="Problem 2">
15874: </resource>
15875:
15876: Symbs are used by the random number generator, as well as to store and
15877: restore data specific to a certain instance of for example a problem.
15878:
15879: =head2 Storing And Retrieving Data
15880:
15881: X<store()>X<cstore()>X<restore()>Three of the most important functions
15882: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
15883: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
15884: is is the non-critical message twin of cstore. These functions are for
15885: handlers to store a perl hash to a user's permanent data space in an
15886: easy manner, and to retrieve it again on another call. It is expected
15887: that a handler would use this once at the beginning to retrieve data,
15888: and then again once at the end to send only the new data back.
15889:
15890: The data is stored in the user's data directory on the user's
15891: homeserver under the ID of the course.
15892:
15893: The hash that is returned by restore will have all of the previous
15894: value for all of the elements of the hash.
15895:
15896: Example:
15897:
15898: #creating a hash
15899: my %hash;
15900: $hash{'foo'}='bar';
15901:
15902: #storing it
15903: &Apache::lonnet::cstore(\%hash);
15904:
15905: #changing a value
15906: $hash{'foo'}='notbar';
15907:
15908: #adding a new value
15909: $hash{'bar'}='foo';
15910: &Apache::lonnet::cstore(\%hash);
15911:
15912: #retrieving the hash
15913: my %history=&Apache::lonnet::restore();
15914:
15915: #print the hash
15916: foreach my $key (sort(keys(%history))) {
15917: print("\%history{$key} = $history{$key}");
15918: }
15919:
15920: Will print out:
15921:
15922: %history{1:foo} = bar
15923: %history{1:keys} = foo:timestamp
15924: %history{1:timestamp} = 990455579
15925: %history{2:bar} = foo
15926: %history{2:foo} = notbar
15927: %history{2:keys} = foo:bar:timestamp
15928: %history{2:timestamp} = 990455580
15929: %history{bar} = foo
15930: %history{foo} = notbar
15931: %history{timestamp} = 990455580
15932: %history{version} = 2
15933:
15934: Note that the special hash entries C<keys>, C<version> and
15935: C<timestamp> were added to the hash. C<version> will be equal to the
15936: total number of versions of the data that have been stored. The
15937: C<timestamp> attribute will be the UNIX time the hash was
15938: stored. C<keys> is available in every historical section to list which
15939: keys were added or changed at a specific historical revision of a
15940: hash.
15941:
15942: B<Warning>: do not store the hash that restore returns directly. This
15943: will cause a mess since it will restore the historical keys as if the
15944: were new keys. I.E. 1:foo will become 1:1:foo etc.
15945:
15946: Calling convention:
15947:
15948: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
15949: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
15950:
15951: For more detailed information, see lonnet specific documentation.
15952:
15953: =head1 RETURN MESSAGES
15954:
15955: =over 4
15956:
15957: =item * B<con_lost>: unable to contact remote host
15958:
15959: =item * B<con_delayed>: unable to contact remote host, message will be delivered
15960: when the connection is brought back up
15961:
15962: =item * B<con_failed>: unable to contact remote host and unable to save message
15963: for later delivery
15964:
15965: =item * B<error:>: an error a occurred, a description of the error follows the :
15966:
15967: =item * B<no_such_host>: unable to fund a host associated with the user/domain
15968: that was requested
15969:
15970: =back
15971:
15972: =head1 PUBLIC SUBROUTINES
15973:
15974: =head2 Session Environment Functions
15975:
15976: =over 4
15977:
15978: =item *
15979: X<appenv()>
15980: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
15981: the user envirnoment file, and will be restored for each access this
15982: user makes during this session, also modifies the %env for the current
15983: process. Optional rolesarrayref - if defined contains a reference to an array
15984: of roles which are exempt from the restriction on modifying user.role entries
15985: in the user's environment.db and in %env.
15986:
15987: =item *
15988: X<delenv()>
15989: B<delenv($delthis,$regexp)>: removes all items from the session
15990: environment file that begin with $delthis. If the
15991: optional second arg - $regexp - is true, $delthis is treated as a
15992: regular expression, otherwise \Q$delthis\E is used.
15993: The values are also deleted from the current processes %env.
15994:
15995: =item * get_env_multiple($name)
15996:
15997: gets $name from the %env hash, it seemlessly handles the cases where multiple
15998: values may be defined and end up as an array ref.
15999:
16000: returns an array of values
16001:
16002: =back
16003:
16004: =head2 User Information
16005:
16006: =over 4
16007:
16008: =item *
16009: X<queryauthenticate()>
16010: B<queryauthenticate($uname,$udom)>: try to determine user's current
16011: authentication scheme
16012:
16013: =item *
16014: X<authenticate()>
16015: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
16016: authenticate user from domain's lib servers (first use the current
16017: one). C<$upass> should be the users password.
16018: $checkdefauth is optional (value is 1 if a check should be made to
16019: authenticate user using default authentication method, and allow
16020: account creation if username does not have account in the domain).
16021: $clientcancheckhost is optional (value is 1 if checking whether the
16022: server can host will occur on the client side in lonauth.pm).
16023:
16024: =item *
16025: X<homeserver()>
16026: B<homeserver($uname,$udom)>: find the server which has
16027: the user's directory and files (there must be only one), this caches
16028: the answer, and also caches if there is a borken connection.
16029:
16030: =item *
16031: X<idget()>
16032: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
16033: a list of student/employee IDs or clicker IDs
16034: (student/employee IDs are a unique resource in a domain, there must be
16035: only 1 ID per username, and only 1 username per ID in a specific domain).
16036: clickerIDs are not necessarily unique, as students might share clickers.
16037: (returns hash: id=>name,id=>name)
16038:
16039: =item *
16040: X<idrget()>
16041: B<idrget($udom,@unames)>: find the IDs behind a list of
16042: usernames (returns hash: name=>id,name=>id)
16043:
16044: =item *
16045: X<idput()>
16046: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
16047: names and associated student/employee IDs or clicker IDs.
16048:
16049: =item *
16050: X<iddel()>
16051: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
16052: student/employee ID or clicker ID username look-ups from domain.
16053: The homeserver ($uhome) and namespace ($namespace) are optional.
16054: If no $uhome is provided, it will be determined usig &homeserver()
16055: for each user. If no $namespace is provided, the default is ids.
16056:
16057: =item *
16058: X<updateclickers()>
16059: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
16060: clicker ID-to-username look-ups in clickers.db on library server.
16061: Permitted actions are add or del (i.e., add or delete). The
16062: clickers.db contains clickerID as keys (escaped), and each corresponding
16063: value is an escaped comma-separated list of usernames (for whom the
16064: library server is the homeserver), who registered that particular ID.
16065: If $critical is true, the update will be sent via &critical, otherwise
16066: &reply() will be used.
16067:
16068: =item *
16069: X<rolesinit()>
16070: B<rolesinit($udom,$username)>: get user privileges.
16071: returns user role, first access and timer interval hashes
16072:
16073: =item *
16074: X<privileged()>
16075: B<privileged($username,$domain)>: returns a true if user has a
16076: privileged and active role (i.e. su or dc), false otherwise.
16077:
16078: =item *
16079: X<getsection()>
16080: B<getsection($udom,$uname,$cname)>: finds the section of student in the
16081: course $cname, return section name/number or '' for "not in course"
16082: and '-1' for "no section"
16083:
16084: =item *
16085: X<userenvironment()>
16086: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
16087: passed in @what from the requested user's environment, returns a hash
16088:
16089: =item *
16090: X<userlog_query()>
16091: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
16092: activity.log file. %filters defines filters applied when parsing the
16093: log file. These can be start or end timestamps, or the type of action
16094: - log to look for Login or Logout events, check for Checkin or
16095: Checkout, role for role selection. The response is in the form
16096: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
16097: escaped strings of the action recorded in the activity.log file.
16098:
16099: =back
16100:
16101: =head2 User Roles
16102:
16103: =over 4
16104:
16105: =item *
16106:
16107: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
16108: returns codes for allowed actions.
16109:
16110: The first argument is required, all others are optional.
16111:
16112: $priv is the privilege being checked.
16113: $uri contains additional information about what is being checked for access (e.g.,
16114: URL, course ID etc.).
16115: $symb is the unique resource instance identifier in a course; if needed,
16116: but not provided, it will be retrieved via a call to &symbread().
16117: $role is the role for which a priv is being checked (only used if priv is evb).
16118: $clientip is the user's IP address (only used when checking for access to portfolio
16119: files).
16120: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
16121: prevents recursive calls to &allowed.
16122:
16123: F: full access
16124: U,I,K: authentication modes (cxx only)
16125: '': forbidden
16126: 1: user needs to choose course
16127: 2: browse allowed
16128: A: passphrase authentication needed
16129: B: access temporarily blocked because of a blocking event in a course.
16130: D: access blocked because access is required via session initiated via deep-link
16131:
16132: =item *
16133:
16134: constructaccess($url,$setpriv) : check for access to construction space URL
16135:
16136: See if the owner domain and name in the URL match those in the
16137: expected environment. If so, return three element list
16138: ($ownername,$ownerdomain,$ownerhome).
16139:
16140: Otherwise return the null string.
16141:
16142: If second argument 'setpriv' is true, it assigns the privileges,
16143: and returns the same three element list, unless the owner has
16144: blocked "ad hoc" Domain Coordinator access to the Author Space,
16145: in which case the null string is returned.
16146:
16147: =item *
16148:
16149: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
16150: define a custom role rolename set privileges in format of lonTabs/roles.tab
16151: for system, domain, and course level. $uname and $udom are optional (current
16152: user's username and domain will be used when either of $uname or $udom are absent.
16153:
16154: =item *
16155:
16156: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
16157: (rolesplain.tab); plain text explanation of a user role term.
16158: $type is Course (default) or Community.
16159: If $forcedefault evaluates to true, text returned will be default
16160: text for $type. Otherwise, if this is a course, the text returned
16161: will be a custom name for the role (if defined in the course's
16162: environment). If no custom name is defined the default is returned.
16163:
16164: =item *
16165:
16166: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
16167: All arguments are optional. Returns a hash of a roles, either for
16168: co-author/assistant author roles for a user's Construction Space
16169: (default), or if $context is 'userroles', roles for the user himself,
16170: In the hash, keys are set to colon-separated $uname,$udom,$role, and
16171: (optionally) if $withsec is true, a fourth colon-separated item - $section.
16172: For each key, value is set to colon-separated start and end times for
16173: the role. If no username and domain are specified, will default to
16174: current user/domain. Types, roles, and roledoms are references to arrays
16175: of role statuses (active, future or previous), roles
16176: (e.g., cc,in, st etc.) and domains of the roles which can be used
16177: to restrict the list of roles reported. If no array ref is
16178: provided for types, will default to return only active roles.
16179:
16180: =item *
16181:
16182: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
16183: user: $uname:$udom has a role in the course: $cdom_$cnum.
16184:
16185: Additional optional arguments are: $type (if role checking is to be restricted
16186: to certain user status types -- previous (expired roles), active (currently
16187: available roles) or future (roles available in the future), and
16188: $hideprivileged -- if true will not report course roles for users who
16189: have active Domain Coordinator role in course's domain or in additional
16190: domains (specified in 'Domains to check for privileged users' in course
16191: environment -- set via: Course Settings -> Classlists and staff listing).
16192:
16193: =item *
16194:
16195: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
16196: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
16197: $possdomains and $possroles are optional array refs -- to domains to check and
16198: roles to check. If $possdomains is not specified, a dump will be done of the
16199: users' roles.db to check for a dc or su role in any domain. This can be
16200: time consuming if &privileged is called repeatedly (e.g., when displaying a
16201: classlist), so in such cases, supplying a $possdomains array is preferred, as
16202: this then allows &privileged_by_domain() to be used, which caches the identity
16203: of privileged users, eliminating the need for repeated calls to &dump().
16204:
16205: =item *
16206:
16207: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
16208: where the outer hash keys are domains specified in the $possdomains array ref,
16209: next inner hash keys are privileged roles specified in the $roles array ref,
16210: and the innermost hash contains key = value pairs for username:domain = end:start
16211: for active or future "privileged" users with that role in that domain. To avoid
16212: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
16213: innerhash are cached using priv_$role and $dom as the identifiers.
16214:
16215: =back
16216:
16217: =head2 User Modification
16218:
16219: =over 4
16220:
16221: =item *
16222:
16223: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
16224: user for the level given by URL. Optional start and end dates (leave empty
16225: string or zero for "no date")
16226:
16227: =item *
16228:
16229: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
16230: change a users, password, possible return values are: ok,
16231: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
16232: refused
16233:
16234: =item *
16235:
16236: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
16237:
16238: =item *
16239:
16240: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
16241: $forceid,$desiredhome,$email,$inststatus,$candelete) :
16242:
16243: will update user information (firstname,middlename,lastname,generation,
16244: permanentemail), and if forceid is true, student/employee ID also.
16245: A user's institutional affiliation(s) can also be updated.
16246: User information fields will not be overwritten with empty entries
16247: unless the field is included in the $candelete array reference.
16248: This array is included when a single user is modified via "Manage Users",
16249: or when Autoupdate.pl is run by cron in a domain.
16250:
16251: =item *
16252:
16253: modifystudent
16254:
16255: modify a student's enrollment and identification information.
16256: The course id is resolved based on the current user's environment.
16257: This means the invoking user must be a course coordinator or otherwise
16258: associated with a course.
16259:
16260: This call is essentially a wrapper for lonnet::modifyuser and
16261: lonnet::modify_student_enrollment
16262:
16263: Inputs:
16264:
16265: =over 4
16266:
16267: =item B<$udom> Student's loncapa domain
16268:
16269: =item B<$uname> Student's loncapa login name
16270:
16271: =item B<$uid> Student/Employee ID
16272:
16273: =item B<$umode> Student's authentication mode
16274:
16275: =item B<$upass> Student's password
16276:
16277: =item B<$first> Student's first name
16278:
16279: =item B<$middle> Student's middle name
16280:
16281: =item B<$last> Student's last name
16282:
16283: =item B<$gene> Student's generation
16284:
16285: =item B<$usec> Student's section in course
16286:
16287: =item B<$end> Unix time of the roles expiration
16288:
16289: =item B<$start> Unix time of the roles start date
16290:
16291: =item B<$forceid> If defined, allow $uid to be changed
16292:
16293: =item B<$desiredhome> server to use as home server for student
16294:
16295: =item B<$email> Student's permanent e-mail address
16296:
16297: =item B<$type> Type of enrollment (auto or manual)
16298:
16299: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
16300:
16301: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
16302:
16303: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
16304:
16305: =item B<$context> role change context (shown in User Management Logs display in a course)
16306:
16307: =item B<$inststatus> institutional status of user - : separated string of escaped status types
16308:
16309: =item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
16310:
16311: =back
16312:
16313: =item *
16314:
16315: modify_student_enrollment
16316:
16317: Change a student's enrollment status in a class. The environment variable
16318: 'role.request.course' must be defined for this function to proceed.
16319:
16320: Inputs:
16321:
16322: =over 4
16323:
16324: =item $udom, student's domain
16325:
16326: =item $uname, student's name
16327:
16328: =item $uid, student's user id
16329:
16330: =item $first, student's first name
16331:
16332: =item $middle
16333:
16334: =item $last
16335:
16336: =item $gene
16337:
16338: =item $usec
16339:
16340: =item $end
16341:
16342: =item $start
16343:
16344: =item $type
16345:
16346: =item $locktype
16347:
16348: =item $cid
16349:
16350: =item $selfenroll
16351:
16352: =item $context
16353:
16354: =item $credits, number of credits student will earn from this class
16355:
16356: =item $instsec, institutional course section code for student
16357:
16358: =back
16359:
16360:
16361: =item *
16362:
16363: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
16364: custom role; give a custom role to a user for the level given by URL. Specify
16365: name and domain of role author, and role name
16366:
16367: =item *
16368:
16369: revokerole($udom,$uname,$url,$role) : revoke a role for url
16370:
16371: =item *
16372:
16373: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
16374:
16375: =back
16376:
16377: =head2 Course Infomation
16378:
16379: =over 4
16380:
16381: =item *
16382:
16383: coursedescription($courseid,$options) : returns a hash of information about the
16384: specified course id, including all environment settings for the
16385: course, the description of the course will be in the hash under the
16386: key 'description'
16387:
16388: $options is an optional parameter that if supplied is a hash reference that controls
16389: what how this function works. It has the following key/values:
16390:
16391: =over 4
16392:
16393: =item freshen_cache
16394:
16395: If defined, and the environment cache for the course is valid, it is
16396: returned in the returned hash.
16397:
16398: =item one_time
16399:
16400: If defined, the last cache time is set to _now_
16401:
16402: =item user
16403:
16404: If defined, the supplied username is used instead of the current user.
16405:
16406:
16407: =back
16408:
16409: =item *
16410:
16411: resdata($name,$domain,$type,@which) : request for current parameter
16412: setting for a specific $type, where $type is either 'course' or 'user',
16413: @what should be a list of parameters to ask about. This routine caches
16414: answers for 10 minutes.
16415:
16416: =item *
16417:
16418: get_courseresdata($courseid, $domain) : dump the entire course resource
16419: data base, returning a hash that is keyed by the resource name and has
16420: values that are the resource value. I believe that the timestamps and
16421: versions are also returned.
16422:
16423: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
16424: supplemental content area. This routine caches the number of files for
16425: 10 minutes.
16426:
16427: =back
16428:
16429: =head2 Course Modification
16430:
16431: =over 4
16432:
16433: =item *
16434:
16435: writecoursepref($courseid,%prefs) : write preferences (environment
16436: database) for a course
16437:
16438: =item *
16439:
16440: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
16441:
16442: =item *
16443:
16444: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
16445:
16446: =item *
16447:
16448: is_course($courseid), is_course($cdom, $cnum)
16449:
16450: Accepts either a combined $courseid (in the form of domain_courseid) or the
16451: two component version $cdom, $cnum. It checks if the specified course exists.
16452:
16453: Returns:
16454: undef if the course doesn't exist, otherwise
16455: in scalar context the combined courseid.
16456: in list context the two components of the course identifier, domain and
16457: courseid.
16458:
16459: =back
16460:
16461: =head2 Bubblesheet Configuration
16462:
16463: =over 4
16464:
16465: =item *
16466:
16467: get_scantron_config($which)
16468:
16469: $which - the name of the configuration to parse from the file.
16470:
16471: Parses and returns the bubblesheet configuration line selected as a
16472: hash of configuration file fields.
16473:
16474:
16475: Returns:
16476: If the named configuration is not in the file, an empty
16477: hash is returned.
16478:
16479: a hash with the fields
16480: name - internal name for the this configuration setup
16481: description - text to display to operator that describes this config
16482: CODElocation - if 0 or the string 'none'
16483: - no CODE exists for this config
16484: if -1 || the string 'letter'
16485: - a CODE exists for this config and is
16486: a string of letters
16487: Unsupported value (but planned for future support)
16488: if a positive integer
16489: - The CODE exists as the first n items from
16490: the question section of the form
16491: if the string 'number'
16492: - The CODE exists for this config and is
16493: a string of numbers
16494: CODEstart - (only matter if a CODE exists) column in the line where
16495: the CODE starts
16496: CODElength - length of the CODE
16497: IDstart - column where the student/employee ID starts
16498: IDlength - length of the student/employee ID info
16499: Qstart - column where the information from the bubbled
16500: 'questions' start
16501: Qlength - number of columns comprising a single bubble line from
16502: the sheet. (usually either 1 or 10)
16503: Qon - either a single character representing the character used
16504: to signal a bubble was chosen in the positional setup, or
16505: the string 'letter' if the letter of the chosen bubble is
16506: in the final, or 'number' if a number representing the
16507: chosen bubble is in the file (1->A 0->J)
16508: Qoff - the character used to represent that a bubble was
16509: left blank
16510: PaperID - if the scanning process generates a unique number for each
16511: sheet scanned the column that this ID number starts in
16512: PaperIDlength - number of columns that comprise the unique ID number
16513: for the sheet of paper
16514: FirstName - column that the first name starts in
16515: FirstNameLength - number of columns that the first name spans
16516: LastName - column that the last name starts in
16517: LastNameLength - number of columns that the last name spans
16518: BubblesPerRow - number of bubbles available in each row used to
16519: bubble an answer. (If not specified, 10 assumed).
16520:
16521:
16522: =item *
16523:
16524: get_scantronformat_file($cdom)
16525:
16526: $cdom - the course's domain (optional); if not supplied, uses
16527: domain for current $env{'request.course.id'}.
16528:
16529: Returns an array containing lines from the scantron format file for
16530: the domain of the course.
16531:
16532: If a url for a custom.tab file is listed in domain's configuration.db,
16533: lines are from this file.
16534:
16535: Otherwise, if a default.tab has been published in RES space by the
16536: domainconfig user, lines are from this file.
16537:
16538: Otherwise, fall back to getting lines from the legacy file on the
16539: local server: /home/httpd/lonTabs/default_scantronformat.tab
16540:
16541: =back
16542:
16543: =head2 Resource Subroutines
16544:
16545: =over 4
16546:
16547: =item *
16548:
16549: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
16550:
16551: =item *
16552:
16553: repcopy($filename) : subscribes to the requested file, and attempts to
16554: replicate from the owning library server, Might return
16555: 'unavailable', 'not_found', 'forbidden', 'ok', or
16556: 'bad_request', also attempts to grab the metadata for the
16557: resource. Expects the local filesystem pathname
16558: (/home/httpd/html/res/....)
16559:
16560: =back
16561:
16562: =head2 Resource Information
16563:
16564: =over 4
16565:
16566: =item *
16567:
16568: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
16569: and returns the value of a variety of different possible values,
16570: $varname should be a request string, and the other parameters can be
16571: used to specify who and what one is asking about. Ordinarily, $cid
16572: does not need to be specified, as it is retrived from
16573: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
16574: within lonuserstate::loadmap() when initializing a course, before
16575: $env{'request.course.id'} has been set, so it needs to be provided
16576: in that one case.
16577:
16578: Possible values for $varname are environment.lastname (or other item
16579: from the envirnment hash), user.name (or someother aspect about the
16580: user), resource.0.maxtries (or some other part and parameter of a
16581: resource)
16582:
16583: =item *
16584:
16585: directcondval($number) : get current value of a condition; reads from a state
16586: string
16587:
16588: =item *
16589:
16590: condval($condidx) : value of condition index based on state
16591:
16592: =item *
16593:
16594: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
16595: resource's metadata, $what should be either a specific key, or either
16596: 'keys' (to get a list of possible keys) or 'packages' to get a list of
16597: packages that this resource currently uses, the last 3 arguments are
16598: only used internally for recursive metadata.
16599:
16600: the toolsymb is only used where the uri is for an external tool (for which
16601: the uri as well as the symb are guaranteed to be unique).
16602:
16603: this function automatically caches all requests except any made recursively
16604: to retrieve a list of metadata keys for an imported library file ($liburi is
16605: defined).
16606:
16607: =item *
16608:
16609: metadata_query($query,$custom,$customshow) : make a metadata query against the
16610: network of library servers; returns file handle of where SQL and regex results
16611: will be stored for query
16612:
16613: =item *
16614:
16615: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
16616: return symbolic list entry (all arguments optional).
16617:
16618: Args: filename is the filename (including path) for the file for which a symb
16619: is required; donotrecurse, if true will prevent calls to allowed() being made
16620: to check access status if more than one resource was found in the bighash
16621: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
16622: a randompick); ignorecachednull, if true will prevent a symb of '' being
16623: returned if $env{$cache_str} is defined as ''; checkforblock if true will
16624: cause possible symbs to be checked to determine if they are subject to content
16625: blocking, if so they will not be included as possible symbs; possibles is a
16626: ref to a hash, which, as a side effect, will be populated with all possible
16627: symbs (content blocking not tested).
16628:
16629: returns the data handle
16630:
16631: =item *
16632:
16633: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
16634: and is a possible symb for the URL in $thisfn, and if is an encrypted
16635: resource that the user accessed using /enc/ returns a 1 on success, 0
16636: on failure, user must be in a course, as it assumes the existence of
16637: the course initial hash, and uses $env('request.course.id'}. The third
16638: arg is an optional reference to a scalar. If this arg is passed in the
16639: call to symbverify, it will be set to 1 if the symb has been set to be
16640: encrypted; otherwise it will be null.
16641:
16642: =item *
16643:
16644: symbclean($symb) : removes versions numbers from a symb, returns the
16645: cleaned symb
16646:
16647: =item *
16648:
16649: is_on_map($uri) : checks if the $uri is somewhere on the current
16650: course map, user must be in a course for it to work.
16651:
16652: =item *
16653:
16654: numval($salt) : return random seed value (addend for rndseed)
16655:
16656: =item *
16657:
16658: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
16659: a random seed, all arguments are optional, if they aren't sent it uses the
16660: environment to derive them. Note: if symb isn't sent and it can't get one
16661: from &symbread it will use the current time as its return value
16662:
16663: =item *
16664:
16665: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
16666: unfakeable, receipt
16667:
16668: =item *
16669:
16670: receipt() : API to ireceipt working off of env values; given out to users
16671:
16672: =item *
16673:
16674: countacc($url) : count the number of accesses to a given URL
16675:
16676: =item *
16677:
16678: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
16679:
16680: =item *
16681:
16682: checkin($token) : updates that a resource has beeen returned (a hard copy version for instance) and returns the data that $token was Checkout with ($symb, $tuname, $tudom, and $tcrsid)
16683:
16684: =item *
16685:
16686: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
16687:
16688: =item *
16689:
16690: devalidate($symb) : devalidate temporary spreadsheet calculations,
16691: forcing spreadsheet to reevaluate the resource scores next time.
16692:
16693: =item *
16694:
16695: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
16696: when viewing in course context.
16697:
16698: input: six args -- filename (decluttered), course number, course domain,
16699: url, symb (if registered) and group (if this is a
16700: group item -- e.g., bulletin board, group page etc.).
16701:
16702: output: array of five scalars --
16703: $cfile -- url for file editing if editable on current server
16704: $home -- homeserver of resource (i.e., for author if published,
16705: or course if uploaded.).
16706: $switchserver -- 1 if server switch will be needed.
16707: $forceedit -- 1 if icon/link should be to go to edit mode
16708: $forceview -- 1 if icon/link should be to go to view mode
16709:
16710: =item *
16711:
16712: is_course_upload($file,$cnum,$cdom)
16713:
16714: Used in course context to determine if current file was uploaded to
16715: the course (i.e., would be found in /userfiles/docs on the course's
16716: homeserver.
16717:
16718: input: 3 args -- filename (decluttered), course number and course domain.
16719: output: boolean -- 1 if file was uploaded.
16720:
16721: =back
16722:
16723: =head2 Storing/Retreiving Data
16724:
16725: =over 4
16726:
16727: =item *
16728:
16729: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
16730: permanently for this url; hashref needs to be given and should be a \%hashname;
16731: the remaining args aren't required and if they aren't passed or are '' they will
16732: be derived from the env (with the exception of $laststore, which is an
16733: optional arg used when a user's submission is stored in grading).
16734: $laststore is $version=$timestamp, where $version is the most recent version
16735: number retrieved for the corresponding $symb in the $namespace db file, and
16736: $timestamp is the timestamp for that transaction (UNIX time).
16737: $laststore is currently only passed when cstore() is called by
16738: structuretags::finalize_storage().
16739:
16740: =item *
16741:
16742: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
16743: but uses critical subroutine
16744:
16745: =item *
16746:
16747: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
16748: all args are optional
16749:
16750: =item *
16751:
16752: dumpstore($namespace,$udom,$uname,$regexp,$range) :
16753: dumps the complete (or key matching regexp) namespace into a hash
16754: ($udom, $uname, $regexp, $range are optional) for a namespace that is
16755: normally &store()ed into
16756:
16757: $range should be either an integer '100' (give me the first 100
16758: matching records)
16759: or be two integers sperated by a - with no spaces
16760: '30-50' (give me the 30th through the 50th matching
16761: records)
16762:
16763:
16764: =item *
16765:
16766: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
16767: replaces a &store() version of data with a replacement set of data
16768: for a particular resource in a namespace passed in the $storehash hash
16769: reference. If $tolog is true, the transaction is logged in the courselog
16770: with an action=PUTSTORE.
16771:
16772: =item *
16773:
16774: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
16775: works very similar to store/cstore, but all data is stored in a
16776: temporary location and can be reset using tmpreset, $storehash should
16777: be a hash reference, returns nothing on success
16778:
16779: =item *
16780:
16781: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
16782: similar to restore, but all data is stored in a temporary location and
16783: can be reset using tmpreset. Returns a hash of values on success,
16784: error string otherwise.
16785:
16786: =item *
16787:
16788: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
16789: deltes all keys for $symb form the temporary storage hash.
16790:
16791: =item *
16792:
16793: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16794: reference filled in from namesp ($udom and $uname are optional)
16795:
16796: =item *
16797:
16798: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
16799: namesp ($udom and $uname are optional)
16800:
16801: =item *
16802:
16803: dump($namespace,$udom,$uname,$regexp,$range) :
16804: dumps the complete (or key matching regexp) namespace into a hash
16805: ($udom, $uname, $regexp, $range are optional)
16806:
16807: $range should be either an integer '100' (give me the first 100
16808: matching records)
16809: or be two integers sperated by a - with no spaces
16810: '30-50' (give me the 30th through the 50th matching
16811: records)
16812: =item *
16813:
16814: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
16815: $store can be a scalar, an array reference, or if the amount to be
16816: incremented is > 1, a hash reference.
16817:
16818: ($udom and $uname are optional)
16819:
16820: =item *
16821:
16822: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
16823: ($udom and $uname are optional)
16824:
16825: =item *
16826:
16827: cput($namespace,$storehash,$udom,$uname) : critical put
16828: ($udom and $uname are optional)
16829:
16830: =item *
16831:
16832: newput($namespace,$storehash,$udom,$uname) :
16833:
16834: Attempts to store the items in the $storehash, but only if they don't
16835: currently exist, if this succeeds you can be certain that you have
16836: successfully created a new key value pair in the $namespace db.
16837:
16838:
16839: Args:
16840: $namespace: name of database to store values to
16841: $storehash: hashref to store to the db
16842: $udom: (optional) domain of user containing the db
16843: $uname: (optional) name of user caontaining the db
16844:
16845: Returns:
16846: 'ok' -> succeeded in storing all keys of $storehash
16847: 'key_exists: <key>' -> failed to anything out of $storehash, as at
16848: least <key> already existed in the db (other
16849: requested keys may also already exist)
16850: 'error: <msg>' -> unable to tie the DB or other error occurred
16851: 'con_lost' -> unable to contact request server
16852: 'refused' -> action was not allowed by remote machine
16853:
16854:
16855: =item *
16856:
16857: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16858: reference filled in from namesp (encrypts the return communication)
16859: ($udom and $uname are optional)
16860:
16861: =item *
16862:
16863: log($udom,$name,$home,$message) : write to permanent log for user; use
16864: critical subroutine
16865:
16866: =item *
16867:
16868: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
16869: array reference filled in from namespace found in domain level on either
16870: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
16871:
16872: =item *
16873:
16874: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
16875: domain level either on specified domain server ($uhome) or primary domain
16876: server ($udom and $uhome are optional)
16877:
16878: =item *
16879:
16880: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
16881: for: authentication, language, quotas, timezone, date locale, and portal URL in
16882: the target domain.
16883:
16884: May also include additional key => value pairs for the following groups:
16885:
16886: =over
16887:
16888: =item
16889: disk quotas (MB allocated by default to portfolios and authoring spaces).
16890:
16891: =over
16892:
16893: =item defaultquota, authorquota
16894:
16895: =back
16896:
16897: =item
16898: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
16899: portfolio for users).
16900:
16901: =over
16902:
16903: =item
16904: aboutme, blog, webdav, portfolio
16905:
16906: =back
16907:
16908: =item
16909: requestcourses: ability to request courses, and how requests are processed.
16910:
16911: =over
16912:
16913: =item
16914: official, unofficial, community, textbook, placement
16915:
16916: =back
16917:
16918: =item
16919: inststatus: types of institutional affiliation, and order in which they are displayed.
16920:
16921: =over
16922:
16923: =item
16924: inststatustypes, inststatusorder, inststatusguest
16925:
16926: =back
16927:
16928: =item
16929: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
16930: for course's uploaded content.
16931:
16932: =over
16933:
16934: =item
16935: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
16936: communityquota, textbookquota, placementquota
16937:
16938: =back
16939:
16940: =item
16941: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
16942: on your servers.
16943:
16944: =over
16945:
16946: =item
16947: remotesessions, hostedsessions
16948:
16949: =back
16950:
16951: =back
16952:
16953: In cases where a domain coordinator has never used the "Set Domain Configuration"
16954: utility to create a configuration.db file on a domain's primary library server
16955: only the following domain defaults: auth_def, auth_arg_def, lang_def
16956: -- corresponding values are authentication type (internal, krb4, krb5,
16957: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
16958: will be available. Values are retrieved from cache (if current), unless the
16959: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
16960: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
16961:
16962: Typical usage:
16963:
16964: %domdefaults = &get_domain_defaults($target_domain);
16965:
16966: =back
16967:
16968: =head2 Network Status Functions
16969:
16970: =over 4
16971:
16972: =item *
16973:
16974: dirlist() : return directory list based on URI (first arg).
16975:
16976: Inputs: 1 required, 5 optional.
16977:
16978: =over
16979:
16980: =item
16981: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
16982:
16983: =item
16984: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
16985:
16986: =item
16987: $username - username of user/course to be listed. Extracted from $uri if absent.
16988:
16989: =item
16990: $getpropath - boolean: 1 if prepend path using &propath().
16991:
16992: =item
16993: $getuserdir - boolean: 1 if prepend path for "userfiles".
16994:
16995: =item
16996: $alternateRoot - path to prepend in place of path from $uri.
16997:
16998: =back
16999:
17000: Returns: Array of up to two items.
17001:
17002: =over
17003:
17004: a reference to an array of files/subdirectories
17005:
17006: =over
17007:
17008: Each element in the array of files/subdirectories is a & separated list of
17009: item name and the result of running stat on the item. If dirlist was requested
17010: for a file instead of a directory, the item name will be ''. For a directory
17011: listing, if the item is a metadata file, the element will end &N&M
17012: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
17013: default copyright set (1).
17014:
17015: =back
17016:
17017: a scalar containing error condition (if encountered).
17018:
17019: =over
17020:
17021: =item
17022: no_host (no homeserver identified for $username:$domain).
17023:
17024: =item
17025: no_such_host (server contacted for listing not identified as valid host).
17026:
17027: =item
17028: con_lost (connection to remote server failed).
17029:
17030: =item
17031: refused (invalid $username:$domain received on lond side).
17032:
17033: =item
17034: no_such_dir (directory at specified path on lond side does not exist).
17035:
17036: =item
17037: empty (directory at specified path on lond side is empty).
17038:
17039: =over
17040:
17041: This is currently not encountered because the &ls3, &ls2,
17042: &ls (_handler) routines on the lond side do not filter out
17043: . and .. from a directory listing.
17044:
17045: =back
17046:
17047: =back
17048:
17049: =back
17050:
17051: =item *
17052:
17053: spareserver() : find server with least workload from spare.tab
17054:
17055:
17056: =item *
17057:
17058: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
17059: if there is no corresponding loncapa host.
17060:
17061: =back
17062:
17063:
17064: =head2 Apache Request
17065:
17066: =over 4
17067:
17068: =item *
17069:
17070: ssi($url,%hash) : server side include, does a complete request cycle on url to
17071: localhost, posts hash
17072:
17073: =back
17074:
17075: =head2 Data to String to Data
17076:
17077: =over 4
17078:
17079: =item *
17080:
17081: hash2str(%hash) : convert a hash into a string complete with escaping and '='
17082: and '&' separators, supports elements that are arrayrefs and hashrefs
17083:
17084: =item *
17085:
17086: hashref2str($hashref) : convert a hashref into a string complete with
17087: escaping and '=' and '&' separators, supports elements that are
17088: arrayrefs and hashrefs
17089:
17090: =item *
17091:
17092: arrayref2str($arrayref) : convert an arrayref into a string complete
17093: with escaping and '&' separators, supports elements that are arrayrefs
17094: and hashrefs
17095:
17096: =item *
17097:
17098: str2hash($string) : convert string to hash using unescaping and
17099: splitting on '=' and '&', supports elements that are arrayrefs and
17100: hashrefs
17101:
17102: =item *
17103:
17104: str2array($string) : convert string to hash using unescaping and
17105: splitting on '&', supports elements that are arrayrefs and hashrefs
17106:
17107: =back
17108:
17109: =head2 Logging Routines
17110:
17111:
17112: These routines allow one to make log messages in the lonnet.log and
17113: lonnet.perm logfiles.
17114:
17115: =over 4
17116:
17117: =item *
17118:
17119: logtouch() : make sure the logfile, lonnet.log, exists
17120:
17121: =item *
17122:
17123: logthis() : append message to the normal lonnet.log file, it gets
17124: preiodically rolled over and deleted.
17125:
17126: =item *
17127:
17128: logperm() : append a permanent message to lonnet.perm.log, this log
17129: file never gets deleted by any automated portion of the system, only
17130: messages of critical importance should go in here.
17131:
17132:
17133: =back
17134:
17135: =head2 General File Helper Routines
17136:
17137: =over 4
17138:
17139: =item *
17140:
17141: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
17142: (a) files in /uploaded
17143: (i) If a local copy of the file exists -
17144: compares modification date of local copy with last-modified date for
17145: definitive version stored on home server for course. If local copy is
17146: stale, requests a new version from the home server and stores it.
17147: If the original has been removed from the home server, then local copy
17148: is unlinked.
17149: (ii) If local copy does not exist -
17150: requests the file from the home server and stores it.
17151:
17152: If $caller is 'uploadrep':
17153: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
17154: for request for files originally uploaded via DOCS.
17155: - returns 'ok' if fresh local copy now available, -1 otherwise.
17156:
17157: Otherwise:
17158: This indicates a call from the content generation phase of the request.
17159: - returns the entire contents of the file or -1.
17160:
17161: (b) files in /res
17162: - returns the entire contents of a file or -1;
17163: it properly subscribes to and replicates the file if neccessary.
17164:
17165:
17166: =item *
17167:
17168: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
17169: reference
17170:
17171: returns either a stat() list of data about the file or an empty list
17172: if the file doesn't exist or couldn't find out about it (connection
17173: problems or user unknown)
17174:
17175: =item *
17176:
17177: filelocation($dir,$file) : returns file system location of a file
17178: based on URI; meant to be "fairly clean" absolute reference, $dir is a
17179: directory that relative $file lookups are to looked in ($dir of /a/dir
17180: and a file of ../bob will become /a/bob)
17181:
17182: =item *
17183:
17184: hreflocation($dir,$file) : returns file system location or a URL; same as
17185: filelocation except for hrefs
17186:
17187: =item *
17188:
17189: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
17190: also removes beginning /home/httpd/html unless /priv/ follows it.
17191:
17192: =back
17193:
17194: =head2 Usererfile file routines (/uploaded*)
17195:
17196: =over 4
17197:
17198: =item *
17199:
17200: userfileupload(): main rotine for putting a file in a user or course's
17201: filespace, arguments are,
17202:
17203: formname - required - this is the name of the element in $env where the
17204: filename, and the contents of the file to create/modifed exist
17205: the filename is in $env{'form.'.$formname.'.filename'} and the
17206: contents of the file is located in $env{'form.'.$formname}
17207: context - if coursedoc, store the file in the course of the active role
17208: of the current user;
17209: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
17210: if 'canceloverwrite': delete file in tmp/overwrites directory
17211: subdir - required - subdirectory to put the file in under ../userfiles/
17212: if undefined, it will be placed in "unknown"
17213:
17214: (This routine calls clean_filename() to remove any dangerous
17215: characters from the filename, and then calls finuserfileupload() to
17216: complete the transaction)
17217:
17218: returns either the url of the uploaded file (/uploaded/....) if successful
17219: and /adm/notfound.html if unsuccessful
17220:
17221: =item *
17222:
17223: clean_filename(): routine for cleaing a filename up for storage in
17224: userfile space, argument is:
17225:
17226: filename - proposed filename
17227:
17228: returns: the new clean filename
17229:
17230: =item *
17231:
17232: finishuserfileupload(): routine that creates and sends the file to
17233: userspace, probably shouldn't be called directly
17234:
17235: docuname: username or courseid of destination for the file
17236: docudom: domain of user/course of destination for the file
17237: formname: same as for userfileupload()
17238: fname: filename (including subdirectories) for the file
17239: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
17240: if hashref, and context is scantron, will convert csv format to standard format
17241: allfiles: reference to hash used to store objects found by parser
17242: codebase: reference to hash used for codebases of java objects found by parser
17243: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
17244: thumbheight: height (pixels) of thumbnail to be created for uploaded image
17245: resizewidth: width to be used to resize image using resizeImage from ImageMagick
17246: resizeheight: height to be used to resize image using resizeImage from ImageMagick
17247: context: if 'overwrite', will move the uploaded file from its temporary location to
17248: userfiles to facilitate overwriting a previously uploaded file with same name.
17249: mimetype: reference to scalar to accommodate mime type determined
17250: from File::MMagic if $parser = parse.
17251:
17252: returns either the url of the uploaded file (/uploaded/....) if successful
17253: and /adm/notfound.html if unsuccessful (or an error message if context
17254: was 'overwrite').
17255:
17256:
17257: =item *
17258:
17259: renameuserfile(): renames an existing userfile to a new name
17260:
17261: Args:
17262: docuname: username or courseid of destination for the file
17263: docudom: domain of user/course of destination for the file
17264: old: current file name (including any subdirs under userfiles)
17265: new: desired file name (including any subdirs under userfiles)
17266:
17267: =item *
17268:
17269: mkdiruserfile(): creates a directory is a userfiles dir
17270:
17271: Args:
17272: docuname: username or courseid of destination for the file
17273: docudom: domain of user/course of destination for the file
17274: dir: dir to create (including any subdirs under userfiles)
17275:
17276: =item *
17277:
17278: removeuserfile(): removes a file that exists in userfiles
17279:
17280: Args:
17281: docuname: username or courseid of destination for the file
17282: docudom: domain of user/course of destination for the file
17283: fname: filname to delete (including any subdirs under userfiles)
17284:
17285: =item *
17286:
17287: removeuploadedurl(): convience function for removeuserfile()
17288:
17289: Args:
17290: url: a full /uploaded/... url to delete
17291:
17292: =item *
17293:
17294: get_portfile_permissions():
17295: Args:
17296: domain: domain of user or course contain the portfolio files
17297: user: name of user or num of course contain the portfolio files
17298: Returns:
17299: hashref of a dump of the proper file_permissions.db
17300:
17301:
17302: =item *
17303:
17304: get_access_controls():
17305:
17306: Args:
17307: current_permissions: the hash ref returned from get_portfile_permissions()
17308: group: (optional) the group you want the files associated with
17309: file: (optional) the file you want access info on
17310:
17311: Returns:
17312: a hash (keys are file names) of hashes containing
17313: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
17314: values are XML containing access control settings (see below)
17315:
17316: Internal notes:
17317:
17318: access controls are stored in file_permissions.db as key=value pairs.
17319: key -> path to file/file_name\0uniqueID:scope_end_start
17320: where scope -> public,guest,course,group,domains or users.
17321: end -> UNIX time for end of access (0 -> no end date)
17322: start -> UNIX time for start of access
17323:
17324: value -> XML description of access control
17325: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
17326: <start></start>
17327: <end></end>
17328:
17329: <password></password> for scope type = guest
17330:
17331: <domain></domain> for scope type = course or group
17332: <number></number>
17333: <roles id="">
17334: <role></role>
17335: <access></access>
17336: <section></section>
17337: <group></group>
17338: </roles>
17339:
17340: <dom></dom> for scope type = domains
17341:
17342: <users> for scope type = users
17343: <user>
17344: <uname></uname>
17345: <udom></udom>
17346: </user>
17347: </users>
17348: </scope>
17349:
17350: Access data is also aggregated for each file in an additional key=value pair:
17351: key -> path to file/file_name\0accesscontrol
17352: value -> reference to hash
17353: hash contains key = value pairs
17354: where key = uniqueID:scope_end_start
17355: value = UNIX time record was last updated
17356:
17357: Used to improve speed of look-ups of access controls for each file.
17358:
17359: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
17360:
17361: =item *
17362:
17363: modify_access_controls():
17364:
17365: Modifies access controls for a portfolio file
17366: Args
17367: 1. file name
17368: 2. reference to hash of required changes,
17369: 3. domain
17370: 4. username
17371: where domain,username are the domain of the portfolio owner
17372: (either a user or a course)
17373:
17374: Returns:
17375: 1. result of additions or updates ('ok' or 'error', with error message).
17376: 2. result of deletions ('ok' or 'error', with error message).
17377: 3. reference to hash of any new or updated access controls.
17378: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
17379: key = integer (inbound ID)
17380: value = uniqueID
17381:
17382: =item *
17383:
17384: get_timebased_id():
17385:
17386: Attempts to get a unique timestamp-based suffix for use with items added to a
17387: course via the Course Editor (e.g., folders, composite pages,
17388: group bulletin boards).
17389:
17390: Args: (first three required; six others optional)
17391:
17392: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
17393: docssequence, or name of group
17394:
17395: 2. keyid (alphanumeric): name of temporary locking key in hash,
17396: e.g., num, boardids
17397:
17398: 3. namespace: name of gdbm file used to store suffixes already assigned;
17399: file will be named nohist_namespace.db
17400:
17401: 4. cdom: domain of course; default is current course domain from %env
17402:
17403: 5. cnum: course number; default is current course number from %env
17404:
17405: 6. idtype: set to concat if an additional digit is to be appended to the
17406: unix timestamp to form the suffix, if the plain timestamp is already
17407: in use. Default is to not do this, but simply increment the unix
17408: timestamp by 1 until a unique key is obtained.
17409:
17410: 7. who: holder of locking key; defaults to user:domain for user.
17411:
17412: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
17413: retrying); default is 3.
17414:
17415: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
17416:
17417: Returns:
17418:
17419: 1. suffix obtained (numeric)
17420:
17421: 2. result of deleting locking key (ok if deleted, or lock never obtained)
17422:
17423: 3. error: contains (localized) error message if an error occurred.
17424:
17425:
17426: =back
17427:
17428: =head2 HTTP Helper Routines
17429:
17430: =over 4
17431:
17432: =item *
17433:
17434: escape() : unpack non-word characters into CGI-compatible hex codes
17435:
17436: =item *
17437:
17438: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
17439:
17440: =back
17441:
17442: =head1 PRIVATE SUBROUTINES
17443:
17444: =head2 Underlying communication routines (Shouldn't call)
17445:
17446: =over 4
17447:
17448: =item *
17449:
17450: subreply() : tries to pass a message to lonc, returns con_lost if incapable
17451:
17452: =item *
17453:
17454: reply() : uses subreply to send a message to remote machine, logs all failures
17455:
17456: =item *
17457:
17458: critical() : passes a critical message to another server; if cannot
17459: get through then place message in connection buffer directory and
17460: returns con_delayed, if incapable of saving message, returns
17461: con_failed
17462:
17463: =item *
17464:
17465: reconlonc() : tries to reconnect lonc client processes.
17466:
17467: =back
17468:
17469: =head2 Resource Access Logging
17470:
17471: =over 4
17472:
17473: =item *
17474:
17475: flushcourselogs() : flush (save) buffer logs and access logs
17476:
17477: =item *
17478:
17479: courselog($what) : save message for course in hash
17480:
17481: =item *
17482:
17483: courseacclog($what) : save message for course using &courselog(). Perform
17484: special processing for specific resource types (problems, exams, quizzes, etc).
17485:
17486: =item *
17487:
17488: goodbye() : flush course logs and log shutting down; it is called in srm.conf
17489: as a PerlChildExitHandler
17490:
17491: =back
17492:
17493: =head2 Other
17494:
17495: =over 4
17496:
17497: =item *
17498:
17499: symblist($mapname,%newhash) : update symbolic storage links
17500:
17501: =back
17502:
17503: =cut
17504:
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