1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.950 2008/03/22 15:47:41 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: package Apache::lonnet;
31:
32: use strict;
33: use LWP::UserAgent();
34: use HTTP::Date;
35: # use Date::Parse;
36: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
37: $_64bit %env);
38:
39: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
40: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
41: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
42: %courseownerbuf, %coursetypebuf);
43:
44: use IO::Socket;
45: use GDBM_File;
46: use HTML::LCParser;
47: use Fcntl qw(:flock);
48: use Storable qw(thaw nfreeze);
49: use Time::HiRes qw( gettimeofday tv_interval );
50: use Cache::Memcached;
51: use Digest::MD5;
52: use Math::Random;
53: use LONCAPA qw(:DEFAULT :match);
54: use LONCAPA::Configuration;
55:
56: my $readit;
57: my $max_connection_retries = 10; # Or some such value.
58:
59: require Exporter;
60:
61: our @ISA = qw (Exporter);
62: our @EXPORT = qw(%env);
63:
64: =pod
65:
66: =head1 Package Variables
67:
68: These are largely undocumented, so if you decipher one please note it here.
69:
70: =over 4
71:
72: =item $processmarker
73:
74: Contains the time this process was started and this servers host id.
75:
76: =item $dumpcount
77:
78: Counts the number of times a message log flush has been attempted (regardless
79: of success) by this process. Used as part of the filename when messages are
80: delayed.
81:
82: =back
83:
84: =cut
85:
86:
87: # --------------------------------------------------------------------- Logging
88: {
89: my $logid;
90: sub instructor_log {
91: my ($hash_name,$storehash,$delflag,$uname,$udom)=@_;
92: $logid++;
93: my $id=time().'00000'.$$.'00000'.$logid;
94: return &Apache::lonnet::put('nohist_'.$hash_name,
95: { $id => {
96: 'exe_uname' => $env{'user.name'},
97: 'exe_udom' => $env{'user.domain'},
98: 'exe_time' => time(),
99: 'exe_ip' => $ENV{'REMOTE_ADDR'},
100: 'delflag' => $delflag,
101: 'logentry' => $storehash,
102: 'uname' => $uname,
103: 'udom' => $udom,
104: }
105: },
106: $env{'course.'.$env{'request.course.id'}.'.domain'},
107: $env{'course.'.$env{'request.course.id'}.'.num'}
108: );
109: }
110: }
111:
112: sub logtouch {
113: my $execdir=$perlvar{'lonDaemons'};
114: unless (-e "$execdir/logs/lonnet.log") {
115: open(my $fh,">>$execdir/logs/lonnet.log");
116: close $fh;
117: }
118: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
119: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
120: }
121:
122: sub logthis {
123: my $message=shift;
124: my $execdir=$perlvar{'lonDaemons'};
125: my $now=time;
126: my $local=localtime($now);
127: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
128: print $fh "$local ($$): $message\n";
129: close($fh);
130: }
131: return 1;
132: }
133:
134: sub logperm {
135: my $message=shift;
136: my $execdir=$perlvar{'lonDaemons'};
137: my $now=time;
138: my $local=localtime($now);
139: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
140: print $fh "$now:$message:$local\n";
141: close($fh);
142: }
143: return 1;
144: }
145:
146: sub create_connection {
147: my ($hostname,$lonid) = @_;
148: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
149: Type => SOCK_STREAM,
150: Timeout => 10);
151: return 0 if (!$client);
152: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
153: my $result = <$client>;
154: chomp($result);
155: return 1 if ($result eq 'done');
156: return 0;
157: }
158:
159:
160: # -------------------------------------------------- Non-critical communication
161: sub subreply {
162: my ($cmd,$server)=@_;
163: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
164: #
165: # With loncnew process trimming, there's a timing hole between lonc server
166: # process exit and the master server picking up the listen on the AF_UNIX
167: # socket. In that time interval, a lock file will exist:
168:
169: my $lockfile=$peerfile.".lock";
170: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
171: sleep(1);
172: }
173: # At this point, either a loncnew parent is listening or an old lonc
174: # or loncnew child is listening so we can connect or everything's dead.
175: #
176: # We'll give the connection a few tries before abandoning it. If
177: # connection is not possible, we'll con_lost back to the client.
178: #
179: my $client;
180: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
181: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
182: Type => SOCK_STREAM,
183: Timeout => 10);
184: if ($client) {
185: last; # Connected!
186: } else {
187: &create_connection(&hostname($server),$server);
188: }
189: sleep(1); # Try again later if failed connection.
190: }
191: my $answer;
192: if ($client) {
193: print $client "sethost:$server:$cmd\n";
194: $answer=<$client>;
195: if (!$answer) { $answer="con_lost"; }
196: chomp($answer);
197: } else {
198: $answer = 'con_lost'; # Failed connection.
199: }
200: return $answer;
201: }
202:
203: sub reply {
204: my ($cmd,$server)=@_;
205: unless (defined(&hostname($server))) { return 'no_such_host'; }
206: my $answer=subreply($cmd,$server);
207: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
208: &logthis("<font color=\"blue\">WARNING:".
209: " $cmd to $server returned $answer</font>");
210: }
211: return $answer;
212: }
213:
214: # ----------------------------------------------------------- Send USR1 to lonc
215:
216: sub reconlonc {
217: my ($lonid) = @_;
218: my $hostname = &hostname($lonid);
219: if ($lonid) {
220: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
221: if ($hostname && -e $peerfile) {
222: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
223: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
224: Type => SOCK_STREAM,
225: Timeout => 10);
226: if ($client) {
227: print $client ("reset_retries\n");
228: my $answer=<$client>;
229: #reset just this one.
230: }
231: }
232: return;
233: }
234:
235: &logthis("Trying to reconnect lonc");
236: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
237: if (open(my $fh,"<$loncfile")) {
238: my $loncpid=<$fh>;
239: chomp($loncpid);
240: if (kill 0 => $loncpid) {
241: &logthis("lonc at pid $loncpid responding, sending USR1");
242: kill USR1 => $loncpid;
243: sleep 1;
244: } else {
245: &logthis(
246: "<font color=\"blue\">WARNING:".
247: " lonc at pid $loncpid not responding, giving up</font>");
248: }
249: } else {
250: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
251: }
252: }
253:
254: # ------------------------------------------------------ Critical communication
255:
256: sub critical {
257: my ($cmd,$server)=@_;
258: unless (&hostname($server)) {
259: &logthis("<font color=\"blue\">WARNING:".
260: " Critical message to unknown server ($server)</font>");
261: return 'no_such_host';
262: }
263: my $answer=reply($cmd,$server);
264: if ($answer eq 'con_lost') {
265: &reconlonc("$perlvar{'lonSockDir'}/$server");
266: my $answer=reply($cmd,$server);
267: if ($answer eq 'con_lost') {
268: my $now=time;
269: my $middlename=$cmd;
270: $middlename=substr($middlename,0,16);
271: $middlename=~s/\W//g;
272: my $dfilename=
273: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
274: $dumpcount++;
275: {
276: my $dfh;
277: if (open($dfh,">$dfilename")) {
278: print $dfh "$cmd\n";
279: close($dfh);
280: }
281: }
282: sleep 2;
283: my $wcmd='';
284: {
285: my $dfh;
286: if (open($dfh,"<$dfilename")) {
287: $wcmd=<$dfh>;
288: close($dfh);
289: }
290: }
291: chomp($wcmd);
292: if ($wcmd eq $cmd) {
293: &logthis("<font color=\"blue\">WARNING: ".
294: "Connection buffer $dfilename: $cmd</font>");
295: &logperm("D:$server:$cmd");
296: return 'con_delayed';
297: } else {
298: &logthis("<font color=\"red\">CRITICAL:"
299: ." Critical connection failed: $server $cmd</font>");
300: &logperm("F:$server:$cmd");
301: return 'con_failed';
302: }
303: }
304: }
305: return $answer;
306: }
307:
308: # ------------------------------------------- check if return value is an error
309:
310: sub error {
311: my ($result) = @_;
312: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
313: if ($2 == 2) { return undef; }
314: return $1;
315: }
316: return undef;
317: }
318:
319: sub convert_and_load_session_env {
320: my ($lonidsdir,$handle)=@_;
321: my @profile;
322: {
323: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
324: if (!$opened) {
325: return 0;
326: }
327: flock($idf,LOCK_SH);
328: @profile=<$idf>;
329: close($idf);
330: }
331: my %temp_env;
332: foreach my $line (@profile) {
333: if ($line !~ m/=/) {
334: return 0;
335: }
336: chomp($line);
337: my ($envname,$envvalue)=split(/=/,$line,2);
338: $temp_env{&unescape($envname)} = &unescape($envvalue);
339: }
340: unlink("$lonidsdir/$handle.id");
341: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
342: 0640)) {
343: %disk_env = %temp_env;
344: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
345: untie(%disk_env);
346: }
347: return 1;
348: }
349:
350: # ------------------------------------------- Transfer profile into environment
351: my $env_loaded;
352: sub transfer_profile_to_env {
353: my ($lonidsdir,$handle,$force_transfer) = @_;
354: if (!$force_transfer && $env_loaded) { return; }
355:
356: if (!defined($lonidsdir)) {
357: $lonidsdir = $perlvar{'lonIDsDir'};
358: }
359: if (!defined($handle)) {
360: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
361: }
362:
363: my $convert;
364: {
365: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
366: if (!$opened) {
367: return;
368: }
369: flock($idf,LOCK_SH);
370: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
371: &GDBM_READER(),0640)) {
372: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
373: untie(%disk_env);
374: } else {
375: $convert = 1;
376: }
377: }
378: if ($convert) {
379: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
380: &logthis("Failed to load session, or convert session.");
381: }
382: }
383:
384: my %remove;
385: while ( my $envname = each(%env) ) {
386: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
387: if ($time < time-300) {
388: $remove{$key}++;
389: }
390: }
391: }
392:
393: $env{'user.environment'} = "$lonidsdir/$handle.id";
394: $env_loaded=1;
395: foreach my $expired_key (keys(%remove)) {
396: &delenv($expired_key);
397: }
398: }
399:
400: # ---------------------------------------------------- Check for valid session
401: sub check_for_valid_session {
402: my ($r) = @_;
403: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
404: my $lonid=$cookies{'lonID'};
405: return undef if (!$lonid);
406:
407: my $handle=&LONCAPA::clean_handle($lonid->value);
408: my $lonidsdir=$r->dir_config('lonIDsDir');
409: return undef if (!-e "$lonidsdir/$handle.id");
410:
411: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
412: return undef if (!$opened);
413:
414: flock($idf,LOCK_SH);
415: my %disk_env;
416: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
417: &GDBM_READER(),0640)) {
418: return undef;
419: }
420:
421: if (!defined($disk_env{'user.name'})
422: || !defined($disk_env{'user.domain'})) {
423: return undef;
424: }
425: return $handle;
426: }
427:
428: sub timed_flock {
429: my ($file,$lock_type) = @_;
430: my $failed=0;
431: eval {
432: local $SIG{__DIE__}='DEFAULT';
433: local $SIG{ALRM}=sub {
434: $failed=1;
435: die("failed lock");
436: };
437: alarm(13);
438: flock($file,$lock_type);
439: alarm(0);
440: };
441: if ($failed) {
442: return undef;
443: } else {
444: return 1;
445: }
446: }
447:
448: # ---------------------------------------------------------- Append Environment
449:
450: sub appenv {
451: my ($newenv,$roles) = @_;
452: if (ref($newenv) eq 'HASH') {
453: foreach my $key (keys(%{$newenv})) {
454: my $refused = 0;
455: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
456: $refused = 1;
457: if (ref($roles) eq 'ARRAY') {
458: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
459: if (grep(/^\Q$role\E$/,@{$roles})) {
460: $refused = 0;
461: }
462: }
463: }
464: if ($refused) {
465: &logthis("<font color=\"blue\">WARNING: ".
466: "Attempt to modify environment ".$key." to ".$newenv->{$key}
467: .'</font>');
468: delete($newenv->{$key});
469: } else {
470: $env{$key}=$newenv->{$key};
471: }
472: }
473: my $opened = open(my $env_file,'+<',$env{'user.environment'});
474: if ($opened
475: && &timed_flock($env_file,LOCK_EX)
476: &&
477: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
478: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
479: while (my ($key,$value) = each(%{$newenv})) {
480: $disk_env{$key} = $value;
481: }
482: untie(%disk_env);
483: }
484: }
485: return 'ok';
486: }
487: # ----------------------------------------------------- Delete from Environment
488:
489: sub delenv {
490: my $delthis=shift;
491: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
492: &logthis("<font color=\"blue\">WARNING: ".
493: "Attempt to delete from environment ".$delthis);
494: return 'error';
495: }
496: my $opened = open(my $env_file,'+<',$env{'user.environment'});
497: if ($opened
498: && &timed_flock($env_file,LOCK_EX)
499: &&
500: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
501: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
502: foreach my $key (keys(%disk_env)) {
503: if ($key=~/^$delthis/) {
504: delete($env{$key});
505: delete($disk_env{$key});
506: }
507: }
508: untie(%disk_env);
509: }
510: return 'ok';
511: }
512:
513: sub get_env_multiple {
514: my ($name) = @_;
515: my @values;
516: if (defined($env{$name})) {
517: # exists is it an array
518: if (ref($env{$name})) {
519: @values=@{ $env{$name} };
520: } else {
521: $values[0]=$env{$name};
522: }
523: }
524: return(@values);
525: }
526:
527: # ------------------------------------------ Find out current server userload
528: sub userload {
529: my $numusers=0;
530: {
531: opendir(LONIDS,$perlvar{'lonIDsDir'});
532: my $filename;
533: my $curtime=time;
534: while ($filename=readdir(LONIDS)) {
535: next if ($filename eq '.' || $filename eq '..');
536: next if ($filename =~ /publicuser_\d+\.id/);
537: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
538: if ($curtime-$mtime < 1800) { $numusers++; }
539: }
540: closedir(LONIDS);
541: }
542: my $userloadpercent=0;
543: my $maxuserload=$perlvar{'lonUserLoadLim'};
544: if ($maxuserload) {
545: $userloadpercent=100*$numusers/$maxuserload;
546: }
547: $userloadpercent=sprintf("%.2f",$userloadpercent);
548: return $userloadpercent;
549: }
550:
551: # ------------------------------------------ Fight off request when overloaded
552:
553: sub overloaderror {
554: my ($r,$checkserver)=@_;
555: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
556: my $loadavg;
557: if ($checkserver eq $perlvar{'lonHostID'}) {
558: open(my $loadfile,'/proc/loadavg');
559: $loadavg=<$loadfile>;
560: $loadavg =~ s/\s.*//g;
561: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
562: close($loadfile);
563: } else {
564: $loadavg=&reply('load',$checkserver);
565: }
566: my $overload=$loadavg-100;
567: if ($overload>0) {
568: $r->err_headers_out->{'Retry-After'}=$overload;
569: $r->log_error('Overload of '.$overload.' on '.$checkserver);
570: return 413;
571: }
572: return '';
573: }
574:
575: # ------------------------------ Find server with least workload from spare.tab
576:
577: sub spareserver {
578: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
579: my $spare_server;
580: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
581: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
582: : $userloadpercent;
583:
584: foreach my $try_server (@{ $spareid{'primary'} }) {
585: ($spare_server, $lowest_load) =
586: &compare_server_load($try_server, $spare_server, $lowest_load);
587: }
588:
589: my $found_server = ($spare_server ne '' && $lowest_load < 100);
590:
591: if (!$found_server) {
592: foreach my $try_server (@{ $spareid{'default'} }) {
593: ($spare_server, $lowest_load) =
594: &compare_server_load($try_server, $spare_server, $lowest_load);
595: }
596: }
597:
598: if (!$want_server_name) {
599: $spare_server="http://".&hostname($spare_server);
600: }
601: return $spare_server;
602: }
603:
604: sub compare_server_load {
605: my ($try_server, $spare_server, $lowest_load) = @_;
606:
607: my $loadans = &reply('load', $try_server);
608: my $userloadans = &reply('userload',$try_server);
609:
610: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
611: next; #didn't get a number from the server
612: }
613:
614: my $load;
615: if ($loadans =~ /\d/) {
616: if ($userloadans =~ /\d/) {
617: #both are numbers, pick the bigger one
618: $load = ($loadans > $userloadans) ? $loadans
619: : $userloadans;
620: } else {
621: $load = $loadans;
622: }
623: } else {
624: $load = $userloadans;
625: }
626:
627: if (($load =~ /\d/) && ($load < $lowest_load)) {
628: $spare_server = $try_server;
629: $lowest_load = $load;
630: }
631: return ($spare_server,$lowest_load);
632: }
633:
634: # --------------------------- ask offload servers if user already has a session
635: sub find_existing_session {
636: my ($udom,$uname) = @_;
637: foreach my $try_server (@{ $spareid{'primary'} },
638: @{ $spareid{'default'} }) {
639: return $try_server if (&has_user_session($try_server, $udom, $uname));
640: }
641: return;
642: }
643:
644: # -------------------------------- ask if server already has a session for user
645: sub has_user_session {
646: my ($lonid,$udom,$uname) = @_;
647: my $result = &reply(join(':','userhassession',
648: map {&escape($_)} ($udom,$uname)),$lonid);
649: return 1 if ($result eq 'ok');
650:
651: return 0;
652: }
653:
654: # --------------------------------------------- Try to change a user's password
655:
656: sub changepass {
657: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
658: $currentpass = &escape($currentpass);
659: $newpass = &escape($newpass);
660: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
661: $server);
662: if (! $answer) {
663: &logthis("No reply on password change request to $server ".
664: "by $uname in domain $udom.");
665: } elsif ($answer =~ "^ok") {
666: &logthis("$uname in $udom successfully changed their password ".
667: "on $server.");
668: } elsif ($answer =~ "^pwchange_failure") {
669: &logthis("$uname in $udom was unable to change their password ".
670: "on $server. The action was blocked by either lcpasswd ".
671: "or pwchange");
672: } elsif ($answer =~ "^non_authorized") {
673: &logthis("$uname in $udom did not get their password correct when ".
674: "attempting to change it on $server.");
675: } elsif ($answer =~ "^auth_mode_error") {
676: &logthis("$uname in $udom attempted to change their password despite ".
677: "not being locally or internally authenticated on $server.");
678: } elsif ($answer =~ "^unknown_user") {
679: &logthis("$uname in $udom attempted to change their password ".
680: "on $server but were unable to because $server is not ".
681: "their home server.");
682: } elsif ($answer =~ "^refused") {
683: &logthis("$server refused to change $uname in $udom password because ".
684: "it was sent an unencrypted request to change the password.");
685: }
686: return $answer;
687: }
688:
689: # ----------------------- Try to determine user's current authentication scheme
690:
691: sub queryauthenticate {
692: my ($uname,$udom)=@_;
693: my $uhome=&homeserver($uname,$udom);
694: if (!$uhome) {
695: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
696: return 'no_host';
697: }
698: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
699: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
700: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
701: }
702: return $answer;
703: }
704:
705: # --------- Try to authenticate user from domain's lib servers (first this one)
706:
707: sub authenticate {
708: my ($uname,$upass,$udom)=@_;
709: $upass=&escape($upass);
710: $uname= &LONCAPA::clean_username($uname);
711: my $uhome=&homeserver($uname,$udom,1);
712: if ((!$uhome) || ($uhome eq 'no_host')) {
713: # Maybe the machine was offline and only re-appeared again recently?
714: &reconlonc();
715: # One more
716: my $uhome=&homeserver($uname,$udom,1);
717: if ((!$uhome) || ($uhome eq 'no_host')) {
718: &logthis("User $uname at $udom is unknown in authenticate");
719: }
720: return 'no_host';
721: }
722: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
723: if ($answer eq 'authorized') {
724: &logthis("User $uname at $udom authorized by $uhome");
725: return $uhome;
726: }
727: if ($answer eq 'non_authorized') {
728: &logthis("User $uname at $udom rejected by $uhome");
729: return 'no_host';
730: }
731: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
732: return 'no_host';
733: }
734:
735: # ---------------------- Find the homebase for a user from domain's lib servers
736:
737: my %homecache;
738: sub homeserver {
739: my ($uname,$udom,$ignoreBadCache)=@_;
740: my $index="$uname:$udom";
741:
742: if (exists($homecache{$index})) { return $homecache{$index}; }
743:
744: my %servers = &get_servers($udom,'library');
745: foreach my $tryserver (keys(%servers)) {
746: next if ($ignoreBadCache ne 'true' &&
747: exists($badServerCache{$tryserver}));
748:
749: my $answer=reply("home:$udom:$uname",$tryserver);
750: if ($answer eq 'found') {
751: delete($badServerCache{$tryserver});
752: return $homecache{$index}=$tryserver;
753: } elsif ($answer eq 'no_host') {
754: $badServerCache{$tryserver}=1;
755: }
756: }
757: return 'no_host';
758: }
759:
760: # ------------------------------------- Find the usernames behind a list of IDs
761:
762: sub idget {
763: my ($udom,@ids)=@_;
764: my %returnhash=();
765:
766: my %servers = &get_servers($udom,'library');
767: foreach my $tryserver (keys(%servers)) {
768: my $idlist=join('&',@ids);
769: $idlist=~tr/A-Z/a-z/;
770: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
771: my @answer=();
772: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
773: @answer=split(/\&/,$reply);
774: } ;
775: my $i;
776: for ($i=0;$i<=$#ids;$i++) {
777: if ($answer[$i]) {
778: $returnhash{$ids[$i]}=$answer[$i];
779: }
780: }
781: }
782: return %returnhash;
783: }
784:
785: # ------------------------------------- Find the IDs behind a list of usernames
786:
787: sub idrget {
788: my ($udom,@unames)=@_;
789: my %returnhash=();
790: foreach my $uname (@unames) {
791: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
792: }
793: return %returnhash;
794: }
795:
796: # ------------------------------- Store away a list of names and associated IDs
797:
798: sub idput {
799: my ($udom,%ids)=@_;
800: my %servers=();
801: foreach my $uname (keys(%ids)) {
802: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
803: my $uhom=&homeserver($uname,$udom);
804: if ($uhom ne 'no_host') {
805: my $id=&escape($ids{$uname});
806: $id=~tr/A-Z/a-z/;
807: my $esc_unam=&escape($uname);
808: if ($servers{$uhom}) {
809: $servers{$uhom}.='&'.$id.'='.$esc_unam;
810: } else {
811: $servers{$uhom}=$id.'='.$esc_unam;
812: }
813: }
814: }
815: foreach my $server (keys(%servers)) {
816: &critical('idput:'.$udom.':'.$servers{$server},$server);
817: }
818: }
819:
820: # ------------------------------------------- get items from domain db files
821:
822: sub get_dom {
823: my ($namespace,$storearr,$udom,$uhome)=@_;
824: my $items='';
825: foreach my $item (@$storearr) {
826: $items.=&escape($item).'&';
827: }
828: $items=~s/\&$//;
829: if (!$udom) {
830: $udom=$env{'user.domain'};
831: if (defined(&domain($udom,'primary'))) {
832: $uhome=&domain($udom,'primary');
833: } else {
834: undef($uhome);
835: }
836: } else {
837: if (!$uhome) {
838: if (defined(&domain($udom,'primary'))) {
839: $uhome=&domain($udom,'primary');
840: }
841: }
842: }
843: if ($udom && $uhome && ($uhome ne 'no_host')) {
844: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
845: my %returnhash;
846: if ($rep eq '' || $rep =~ /^error: 2 /) {
847: return %returnhash;
848: }
849: my @pairs=split(/\&/,$rep);
850: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
851: return @pairs;
852: }
853: my $i=0;
854: foreach my $item (@$storearr) {
855: $returnhash{$item}=&thaw_unescape($pairs[$i]);
856: $i++;
857: }
858: return %returnhash;
859: } else {
860: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
861: }
862: }
863:
864: # -------------------------------------------- put items in domain db files
865:
866: sub put_dom {
867: my ($namespace,$storehash,$udom,$uhome)=@_;
868: if (!$udom) {
869: $udom=$env{'user.domain'};
870: if (defined(&domain($udom,'primary'))) {
871: $uhome=&domain($udom,'primary');
872: } else {
873: undef($uhome);
874: }
875: } else {
876: if (!$uhome) {
877: if (defined(&domain($udom,'primary'))) {
878: $uhome=&domain($udom,'primary');
879: }
880: }
881: }
882: if ($udom && $uhome && ($uhome ne 'no_host')) {
883: my $items='';
884: foreach my $item (keys(%$storehash)) {
885: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
886: }
887: $items=~s/\&$//;
888: return &reply("putdom:$udom:$namespace:$items",$uhome);
889: } else {
890: &logthis("put_dom failed - no homeserver and/or domain");
891: }
892: }
893:
894: sub retrieve_inst_usertypes {
895: my ($udom) = @_;
896: my (%returnhash,@order);
897: if (defined(&domain($udom,'primary'))) {
898: my $uhome=&domain($udom,'primary');
899: my $rep=&reply("inst_usertypes:$udom",$uhome);
900: my ($hashitems,$orderitems) = split(/:/,$rep);
901: my @pairs=split(/\&/,$hashitems);
902: foreach my $item (@pairs) {
903: my ($key,$value)=split(/=/,$item,2);
904: $key = &unescape($key);
905: next if ($key =~ /^error: 2 /);
906: $returnhash{$key}=&thaw_unescape($value);
907: }
908: my @esc_order = split(/\&/,$orderitems);
909: foreach my $item (@esc_order) {
910: push(@order,&unescape($item));
911: }
912: } else {
913: &logthis("get_dom failed - no primary domain server for $udom");
914: }
915: return (\%returnhash,\@order);
916: }
917:
918: sub is_domainimage {
919: my ($url) = @_;
920: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
921: if (&domain($1) ne '') {
922: return '1';
923: }
924: }
925: return;
926: }
927:
928: sub inst_directory_query {
929: my ($srch) = @_;
930: my $udom = $srch->{'srchdomain'};
931: my %results;
932: my $homeserver = &domain($udom,'primary');
933: my $outcome;
934: if ($homeserver ne '') {
935: my $queryid=&reply("querysend:instdirsearch:".
936: &escape($srch->{'srchby'}).':'.
937: &escape($srch->{'srchterm'}).':'.
938: &escape($srch->{'srchtype'}),$homeserver);
939: my $host=&hostname($homeserver);
940: if ($queryid !~/^\Q$host\E\_/) {
941: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
942: return;
943: }
944: my $response = &get_query_reply($queryid);
945: my $maxtries = 5;
946: my $tries = 1;
947: while (($response=~/^timeout/) && ($tries < $maxtries)) {
948: $response = &get_query_reply($queryid);
949: $tries ++;
950: }
951:
952: if (!&error($response) && $response ne 'refused') {
953: if ($response eq 'unavailable') {
954: $outcome = $response;
955: } else {
956: $outcome = 'ok';
957: my @matches = split(/\n/,$response);
958: foreach my $match (@matches) {
959: my ($key,$value) = split(/=/,$match);
960: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
961: }
962: }
963: }
964: }
965: return ($outcome,%results);
966: }
967:
968: sub usersearch {
969: my ($srch) = @_;
970: my $dom = $srch->{'srchdomain'};
971: my %results;
972: my %libserv = &all_library();
973: my $query = 'usersearch';
974: foreach my $tryserver (keys(%libserv)) {
975: if (&host_domain($tryserver) eq $dom) {
976: my $host=&hostname($tryserver);
977: my $queryid=
978: &reply("querysend:".&escape($query).':'.
979: &escape($srch->{'srchby'}).':'.
980: &escape($srch->{'srchtype'}).':'.
981: &escape($srch->{'srchterm'}),$tryserver);
982: if ($queryid !~/^\Q$host\E\_/) {
983: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
984: next;
985: }
986: my $reply = &get_query_reply($queryid);
987: my $maxtries = 1;
988: my $tries = 1;
989: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
990: $reply = &get_query_reply($queryid);
991: $tries ++;
992: }
993: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
994: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
995: } else {
996: my @matches;
997: if ($reply =~ /\n/) {
998: @matches = split(/\n/,$reply);
999: } else {
1000: @matches = split(/\&/,$reply);
1001: }
1002: foreach my $match (@matches) {
1003: my ($uname,$udom,%userhash);
1004: foreach my $entry (split(/:/,$match)) {
1005: my ($key,$value) =
1006: map {&unescape($_);} split(/=/,$entry);
1007: $userhash{$key} = $value;
1008: if ($key eq 'username') {
1009: $uname = $value;
1010: } elsif ($key eq 'domain') {
1011: $udom = $value;
1012: }
1013: }
1014: $results{$uname.':'.$udom} = \%userhash;
1015: }
1016: }
1017: }
1018: }
1019: return %results;
1020: }
1021:
1022: sub get_instuser {
1023: my ($udom,$uname,$id) = @_;
1024: my $homeserver = &domain($udom,'primary');
1025: my ($outcome,%results);
1026: if ($homeserver ne '') {
1027: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1028: &escape($id).':'.&escape($udom),$homeserver);
1029: my $host=&hostname($homeserver);
1030: if ($queryid !~/^\Q$host\E\_/) {
1031: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1032: return;
1033: }
1034: my $response = &get_query_reply($queryid);
1035: my $maxtries = 5;
1036: my $tries = 1;
1037: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1038: $response = &get_query_reply($queryid);
1039: $tries ++;
1040: }
1041: if (!&error($response) && $response ne 'refused') {
1042: if ($response eq 'unavailable') {
1043: $outcome = $response;
1044: } else {
1045: $outcome = 'ok';
1046: my @matches = split(/\n/,$response);
1047: foreach my $match (@matches) {
1048: my ($key,$value) = split(/=/,$match);
1049: $results{&unescape($key)} = &thaw_unescape($value);
1050: }
1051: }
1052: }
1053: }
1054: my %userinfo;
1055: if (ref($results{$uname}) eq 'HASH') {
1056: %userinfo = %{$results{$uname}};
1057: }
1058: return ($outcome,%userinfo);
1059: }
1060:
1061: sub inst_rulecheck {
1062: my ($udom,$uname,$id,$item,$rules) = @_;
1063: my %returnhash;
1064: if ($udom ne '') {
1065: if (ref($rules) eq 'ARRAY') {
1066: @{$rules} = map {&escape($_);} (@{$rules});
1067: my $rulestr = join(':',@{$rules});
1068: my $homeserver=&domain($udom,'primary');
1069: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1070: my $response;
1071: if ($item eq 'username') {
1072: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1073: ':'.&escape($uname).':'.$rulestr,
1074: $homeserver));
1075: } elsif ($item eq 'id') {
1076: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1077: ':'.&escape($id).':'.$rulestr,
1078: $homeserver));
1079: } elsif ($item eq 'selfcreate') {
1080: $response=&unescape(&reply('instselfcreatecheck:'.
1081: &escape($udom).':'.&escape($uname).
1082: ':'.$rulestr,$homeserver));
1083: }
1084: if ($response ne 'refused') {
1085: my @pairs=split(/\&/,$response);
1086: foreach my $item (@pairs) {
1087: my ($key,$value)=split(/=/,$item,2);
1088: $key = &unescape($key);
1089: next if ($key =~ /^error: 2 /);
1090: $returnhash{$key}=&thaw_unescape($value);
1091: }
1092: }
1093: }
1094: }
1095: }
1096: return %returnhash;
1097: }
1098:
1099: sub inst_userrules {
1100: my ($udom,$check) = @_;
1101: my (%ruleshash,@ruleorder);
1102: if ($udom ne '') {
1103: my $homeserver=&domain($udom,'primary');
1104: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1105: my $response;
1106: if ($check eq 'id') {
1107: $response=&reply('instidrules:'.&escape($udom),
1108: $homeserver);
1109: } elsif ($check eq 'email') {
1110: $response=&reply('instemailrules:'.&escape($udom),
1111: $homeserver);
1112: } else {
1113: $response=&reply('instuserrules:'.&escape($udom),
1114: $homeserver);
1115: }
1116: if (($response ne 'refused') && ($response ne 'error') &&
1117: ($response ne 'unknown_cmd') &&
1118: ($response ne 'no_such_host')) {
1119: my ($hashitems,$orderitems) = split(/:/,$response);
1120: my @pairs=split(/\&/,$hashitems);
1121: foreach my $item (@pairs) {
1122: my ($key,$value)=split(/=/,$item,2);
1123: $key = &unescape($key);
1124: next if ($key =~ /^error: 2 /);
1125: $ruleshash{$key}=&thaw_unescape($value);
1126: }
1127: my @esc_order = split(/\&/,$orderitems);
1128: foreach my $item (@esc_order) {
1129: push(@ruleorder,&unescape($item));
1130: }
1131: }
1132: }
1133: }
1134: return (\%ruleshash,\@ruleorder);
1135: }
1136:
1137: # ------------------------- Get Authentication and Language Defaults for Domain
1138:
1139: sub get_domain_defaults {
1140: my ($domain) = @_;
1141: my $cachetime = 60*60*24;
1142: my ($defauthtype,$defautharg,$deflang);
1143: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1144: if (defined($cached)) {
1145: if (ref($result) eq 'HASH') {
1146: return %{$result};
1147: }
1148: }
1149: my %domdefaults;
1150: my %domconfig =
1151: &Apache::lonnet::get_dom('configuration',['defaults'],$domain);
1152: if (ref($domconfig{'defaults'}) eq 'HASH') {
1153: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1154: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1155: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1156: } else {
1157: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1158: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1159: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1160: }
1161: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1162: $cachetime);
1163: return %domdefaults;
1164: }
1165:
1166: # --------------------------------------------------- Assign a key to a student
1167:
1168: sub assign_access_key {
1169: #
1170: # a valid key looks like uname:udom#comments
1171: # comments are being appended
1172: #
1173: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1174: $kdom=
1175: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1176: $knum=
1177: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1178: $cdom=
1179: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1180: $cnum=
1181: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1182: $udom=$env{'user.name'} unless (defined($udom));
1183: $uname=$env{'user.domain'} unless (defined($uname));
1184: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1185: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1186: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1187: # assigned to this person
1188: # - this should not happen,
1189: # unless something went wrong
1190: # the first time around
1191: # ready to assign
1192: $logentry=$1.'; '.$logentry;
1193: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1194: $kdom,$knum) eq 'ok') {
1195: # key now belongs to user
1196: my $envkey='key.'.$cdom.'_'.$cnum;
1197: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1198: &appenv({'environment.'.$envkey => $ckey});
1199: return 'ok';
1200: } else {
1201: return
1202: 'error: Count not permanently assign key, will need to be re-entered later.';
1203: }
1204: } else {
1205: return 'error: Could not assign key, try again later.';
1206: }
1207: } elsif (!$existing{$ckey}) {
1208: # the key does not exist
1209: return 'error: The key does not exist';
1210: } else {
1211: # the key is somebody else's
1212: return 'error: The key is already in use';
1213: }
1214: }
1215:
1216: # ------------------------------------------ put an additional comment on a key
1217:
1218: sub comment_access_key {
1219: #
1220: # a valid key looks like uname:udom#comments
1221: # comments are being appended
1222: #
1223: my ($ckey,$cdom,$cnum,$logentry)=@_;
1224: $cdom=
1225: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1226: $cnum=
1227: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1228: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1229: if ($existing{$ckey}) {
1230: $existing{$ckey}.='; '.$logentry;
1231: # ready to assign
1232: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1233: $cdom,$cnum) eq 'ok') {
1234: return 'ok';
1235: } else {
1236: return 'error: Count not store comment.';
1237: }
1238: } else {
1239: # the key does not exist
1240: return 'error: The key does not exist';
1241: }
1242: }
1243:
1244: # ------------------------------------------------------ Generate a set of keys
1245:
1246: sub generate_access_keys {
1247: my ($number,$cdom,$cnum,$logentry)=@_;
1248: $cdom=
1249: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1250: $cnum=
1251: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1252: unless (&allowed('mky',$cdom)) { return 0; }
1253: unless (($cdom) && ($cnum)) { return 0; }
1254: if ($number>10000) { return 0; }
1255: sleep(2); # make sure don't get same seed twice
1256: srand(time()^($$+($$<<15))); # from "Programming Perl"
1257: my $total=0;
1258: for (my $i=1;$i<=$number;$i++) {
1259: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1260: sprintf("%lx",int(100000*rand)).'-'.
1261: sprintf("%lx",int(100000*rand));
1262: $newkey=~s/1/g/g; # folks mix up 1 and l
1263: $newkey=~s/0/h/g; # and also 0 and O
1264: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1265: if ($existing{$newkey}) {
1266: $i--;
1267: } else {
1268: if (&put('accesskeys',
1269: { $newkey => '# generated '.localtime().
1270: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1271: '; '.$logentry },
1272: $cdom,$cnum) eq 'ok') {
1273: $total++;
1274: }
1275: }
1276: }
1277: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1278: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1279: return $total;
1280: }
1281:
1282: # ------------------------------------------------------- Validate an accesskey
1283:
1284: sub validate_access_key {
1285: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1286: $cdom=
1287: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1288: $cnum=
1289: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1290: $udom=$env{'user.domain'} unless (defined($udom));
1291: $uname=$env{'user.name'} unless (defined($uname));
1292: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1293: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1294: }
1295:
1296: # ------------------------------------- Find the section of student in a course
1297: sub devalidate_getsection_cache {
1298: my ($udom,$unam,$courseid)=@_;
1299: my $hashid="$udom:$unam:$courseid";
1300: &devalidate_cache_new('getsection',$hashid);
1301: }
1302:
1303: sub courseid_to_courseurl {
1304: my ($courseid) = @_;
1305: #already url style courseid
1306: return $courseid if ($courseid =~ m{^/});
1307:
1308: if (exists($env{'course.'.$courseid.'.num'})) {
1309: my $cnum = $env{'course.'.$courseid.'.num'};
1310: my $cdom = $env{'course.'.$courseid.'.domain'};
1311: return "/$cdom/$cnum";
1312: }
1313:
1314: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1315: if (exists($courseinfo{'num'})) {
1316: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1317: }
1318:
1319: return undef;
1320: }
1321:
1322: sub getsection {
1323: my ($udom,$unam,$courseid)=@_;
1324: my $cachetime=1800;
1325:
1326: my $hashid="$udom:$unam:$courseid";
1327: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1328: if (defined($cached)) { return $result; }
1329:
1330: my %Pending;
1331: my %Expired;
1332: #
1333: # Each role can either have not started yet (pending), be active,
1334: # or have expired.
1335: #
1336: # If there is an active role, we are done.
1337: #
1338: # If there is more than one role which has not started yet,
1339: # choose the one which will start sooner
1340: # If there is one role which has not started yet, return it.
1341: #
1342: # If there is more than one expired role, choose the one which ended last.
1343: # If there is a role which has expired, return it.
1344: #
1345: $courseid = &courseid_to_courseurl($courseid);
1346: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1347: foreach my $key (keys(%roleshash)) {
1348: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1349: my $section=$1;
1350: if ($key eq $courseid.'_st') { $section=''; }
1351: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1352: my $now=time;
1353: if (defined($end) && $end && ($now > $end)) {
1354: $Expired{$end}=$section;
1355: next;
1356: }
1357: if (defined($start) && $start && ($now < $start)) {
1358: $Pending{$start}=$section;
1359: next;
1360: }
1361: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1362: }
1363: #
1364: # Presumedly there will be few matching roles from the above
1365: # loop and the sorting time will be negligible.
1366: if (scalar(keys(%Pending))) {
1367: my ($time) = sort {$a <=> $b} keys(%Pending);
1368: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1369: }
1370: if (scalar(keys(%Expired))) {
1371: my @sorted = sort {$a <=> $b} keys(%Expired);
1372: my $time = pop(@sorted);
1373: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1374: }
1375: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1376: }
1377:
1378: sub save_cache {
1379: &purge_remembered();
1380: #&Apache::loncommon::validate_page();
1381: undef(%env);
1382: undef($env_loaded);
1383: }
1384:
1385: my $to_remember=-1;
1386: my %remembered;
1387: my %accessed;
1388: my $kicks=0;
1389: my $hits=0;
1390: sub make_key {
1391: my ($name,$id) = @_;
1392: if (length($id) > 65
1393: && length(&escape($id)) > 200) {
1394: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1395: }
1396: return &escape($name.':'.$id);
1397: }
1398:
1399: sub devalidate_cache_new {
1400: my ($name,$id,$debug) = @_;
1401: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1402: $id=&make_key($name,$id);
1403: $memcache->delete($id);
1404: delete($remembered{$id});
1405: delete($accessed{$id});
1406: }
1407:
1408: sub is_cached_new {
1409: my ($name,$id,$debug) = @_;
1410: $id=&make_key($name,$id);
1411: if (exists($remembered{$id})) {
1412: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1413: $accessed{$id}=[&gettimeofday()];
1414: $hits++;
1415: return ($remembered{$id},1);
1416: }
1417: my $value = $memcache->get($id);
1418: if (!(defined($value))) {
1419: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1420: return (undef,undef);
1421: }
1422: if ($value eq '__undef__') {
1423: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1424: $value=undef;
1425: }
1426: &make_room($id,$value,$debug);
1427: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1428: return ($value,1);
1429: }
1430:
1431: sub do_cache_new {
1432: my ($name,$id,$value,$time,$debug) = @_;
1433: $id=&make_key($name,$id);
1434: my $setvalue=$value;
1435: if (!defined($setvalue)) {
1436: $setvalue='__undef__';
1437: }
1438: if (!defined($time) ) {
1439: $time=600;
1440: }
1441: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1442: my $result = $memcache->set($id,$setvalue,$time);
1443: if (! $result) {
1444: &logthis("caching of id -> $id failed");
1445: $memcache->disconnect_all();
1446: }
1447: # need to make a copy of $value
1448: &make_room($id,$value,$debug);
1449: return $value;
1450: }
1451:
1452: sub make_room {
1453: my ($id,$value,$debug)=@_;
1454:
1455: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1456: : $value;
1457: if ($to_remember<0) { return; }
1458: $accessed{$id}=[&gettimeofday()];
1459: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1460: my $to_kick;
1461: my $max_time=0;
1462: foreach my $other (keys(%accessed)) {
1463: if (&tv_interval($accessed{$other}) > $max_time) {
1464: $to_kick=$other;
1465: $max_time=&tv_interval($accessed{$other});
1466: }
1467: }
1468: delete($remembered{$to_kick});
1469: delete($accessed{$to_kick});
1470: $kicks++;
1471: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1472: return;
1473: }
1474:
1475: sub purge_remembered {
1476: #&logthis("Tossing ".scalar(keys(%remembered)));
1477: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1478: undef(%remembered);
1479: undef(%accessed);
1480: }
1481: # ------------------------------------- Read an entry from a user's environment
1482:
1483: sub userenvironment {
1484: my ($udom,$unam,@what)=@_;
1485: my %returnhash=();
1486: my @answer=split(/\&/,
1487: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1488: &homeserver($unam,$udom)));
1489: my $i;
1490: for ($i=0;$i<=$#what;$i++) {
1491: $returnhash{$what[$i]}=&unescape($answer[$i]);
1492: }
1493: return %returnhash;
1494: }
1495:
1496: # ---------------------------------------------------------- Get a studentphoto
1497: sub studentphoto {
1498: my ($udom,$unam,$ext) = @_;
1499: my $home=&Apache::lonnet::homeserver($unam,$udom);
1500: if (defined($env{'request.course.id'})) {
1501: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1502: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1503: return(&retrievestudentphoto($udom,$unam,$ext));
1504: } else {
1505: my ($result,$perm_reqd)=
1506: &Apache::lonnet::auto_photo_permission($unam,$udom);
1507: if ($result eq 'ok') {
1508: if (!($perm_reqd eq 'yes')) {
1509: return(&retrievestudentphoto($udom,$unam,$ext));
1510: }
1511: }
1512: }
1513: }
1514: } else {
1515: my ($result,$perm_reqd) =
1516: &Apache::lonnet::auto_photo_permission($unam,$udom);
1517: if ($result eq 'ok') {
1518: if (!($perm_reqd eq 'yes')) {
1519: return(&retrievestudentphoto($udom,$unam,$ext));
1520: }
1521: }
1522: }
1523: return '/adm/lonKaputt/lonlogo_broken.gif';
1524: }
1525:
1526: sub retrievestudentphoto {
1527: my ($udom,$unam,$ext,$type) = @_;
1528: my $home=&Apache::lonnet::homeserver($unam,$udom);
1529: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1530: if ($ret eq 'ok') {
1531: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1532: if ($type eq 'thumbnail') {
1533: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1534: }
1535: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1536: return $tokenurl;
1537: } else {
1538: if ($type eq 'thumbnail') {
1539: return '/adm/lonKaputt/genericstudent_tn.gif';
1540: } else {
1541: return '/adm/lonKaputt/lonlogo_broken.gif';
1542: }
1543: }
1544: }
1545:
1546: # -------------------------------------------------------------------- New chat
1547:
1548: sub chatsend {
1549: my ($newentry,$anon,$group)=@_;
1550: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1551: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1552: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1553: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1554: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1555: &escape($newentry)).':'.$group,$chome);
1556: }
1557:
1558: # ------------------------------------------ Find current version of a resource
1559:
1560: sub getversion {
1561: my $fname=&clutter(shift);
1562: unless ($fname=~/^\/res\//) { return -1; }
1563: return ¤tversion(&filelocation('',$fname));
1564: }
1565:
1566: sub currentversion {
1567: my $fname=shift;
1568: my ($result,$cached)=&is_cached_new('resversion',$fname);
1569: if (defined($cached)) { return $result; }
1570: my $author=$fname;
1571: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1572: my ($udom,$uname)=split(/\//,$author);
1573: my $home=homeserver($uname,$udom);
1574: if ($home eq 'no_host') {
1575: return -1;
1576: }
1577: my $answer=reply("currentversion:$fname",$home);
1578: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1579: return -1;
1580: }
1581: return &do_cache_new('resversion',$fname,$answer,600);
1582: }
1583:
1584: # ----------------------------- Subscribe to a resource, return URL if possible
1585:
1586: sub subscribe {
1587: my $fname=shift;
1588: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1589: $fname=~s/[\n\r]//g;
1590: my $author=$fname;
1591: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1592: my ($udom,$uname)=split(/\//,$author);
1593: my $home=homeserver($uname,$udom);
1594: if ($home eq 'no_host') {
1595: return 'not_found';
1596: }
1597: my $answer=reply("sub:$fname",$home);
1598: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1599: $answer.=' by '.$home;
1600: }
1601: return $answer;
1602: }
1603:
1604: # -------------------------------------------------------------- Replicate file
1605:
1606: sub repcopy {
1607: my $filename=shift;
1608: $filename=~s/\/+/\//g;
1609: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1610: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1611: if ($filename=~m|^/home/httpd/html/userfiles/| or
1612: $filename=~m -^/*(uploaded|editupload)/-) {
1613: return &repcopy_userfile($filename);
1614: }
1615: $filename=~s/[\n\r]//g;
1616: my $transname="$filename.in.transfer";
1617: # FIXME: this should flock
1618: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1619: my $remoteurl=subscribe($filename);
1620: if ($remoteurl =~ /^con_lost by/) {
1621: &logthis("Subscribe returned $remoteurl: $filename");
1622: return 'unavailable';
1623: } elsif ($remoteurl eq 'not_found') {
1624: #&logthis("Subscribe returned not_found: $filename");
1625: return 'not_found';
1626: } elsif ($remoteurl =~ /^rejected by/) {
1627: &logthis("Subscribe returned $remoteurl: $filename");
1628: return 'forbidden';
1629: } elsif ($remoteurl eq 'directory') {
1630: return 'ok';
1631: } else {
1632: my $author=$filename;
1633: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1634: my ($udom,$uname)=split(/\//,$author);
1635: my $home=homeserver($uname,$udom);
1636: unless ($home eq $perlvar{'lonHostID'}) {
1637: my @parts=split(/\//,$filename);
1638: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1639: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1640: &logthis("Malconfiguration for replication: $filename");
1641: return 'bad_request';
1642: }
1643: my $count;
1644: for ($count=5;$count<$#parts;$count++) {
1645: $path.="/$parts[$count]";
1646: if ((-e $path)!=1) {
1647: mkdir($path,0777);
1648: }
1649: }
1650: my $ua=new LWP::UserAgent;
1651: my $request=new HTTP::Request('GET',"$remoteurl");
1652: my $response=$ua->request($request,$transname);
1653: if ($response->is_error()) {
1654: unlink($transname);
1655: my $message=$response->status_line;
1656: &logthis("<font color=\"blue\">WARNING:"
1657: ." LWP get: $message: $filename</font>");
1658: return 'unavailable';
1659: } else {
1660: if ($remoteurl!~/\.meta$/) {
1661: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1662: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1663: if ($mresponse->is_error()) {
1664: unlink($filename.'.meta');
1665: &logthis(
1666: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1667: }
1668: }
1669: rename($transname,$filename);
1670: return 'ok';
1671: }
1672: }
1673: }
1674: }
1675:
1676: # ------------------------------------------------ Get server side include body
1677: sub ssi_body {
1678: my ($filelink,%form)=@_;
1679: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1680: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1681: }
1682: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1683: &ssi($filelink,%form));
1684: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1685: $output=~s/^.*?\<body[^\>]*\>//si;
1686: $output=~s/\<\/body\s*\>.*?$//si;
1687: return $output;
1688: }
1689:
1690: # --------------------------------------------------------- Server Side Include
1691:
1692: sub absolute_url {
1693: my ($host_name) = @_;
1694: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1695: if ($host_name eq '') {
1696: $host_name = $ENV{'SERVER_NAME'};
1697: }
1698: return $protocol.$host_name;
1699: }
1700:
1701: #
1702: # Server side include.
1703: # Parameters:
1704: # fn Possibly encrypted resource name/id.
1705: # form Hash that describes how the rendering should be done
1706: # and other things.
1707: # Returns:
1708: # Scalar context: The content of the response.
1709: # Array context: 2 element list of the content and the full response object.
1710: #
1711: sub ssi {
1712:
1713: my ($fn,%form)=@_;
1714: my $ua=new LWP::UserAgent;
1715: my $request;
1716:
1717: $form{'no_update_last_known'}=1;
1718: &Apache::lonenc::check_encrypt(\$fn);
1719: if (%form) {
1720: $request=new HTTP::Request('POST',&absolute_url().$fn);
1721: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1722: } else {
1723: $request=new HTTP::Request('GET',&absolute_url().$fn);
1724: }
1725:
1726: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1727: my $response=$ua->request($request);
1728:
1729: if (wantarray) {
1730: return ($response->content, $response);
1731: } else {
1732: return $response->content;
1733: }
1734: }
1735:
1736: sub externalssi {
1737: my ($url)=@_;
1738: my $ua=new LWP::UserAgent;
1739: my $request=new HTTP::Request('GET',$url);
1740: my $response=$ua->request($request);
1741: return $response->content;
1742: }
1743:
1744: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1745:
1746: sub allowuploaded {
1747: my ($srcurl,$url)=@_;
1748: $url=&clutter(&declutter($url));
1749: my $dir=$url;
1750: $dir=~s/\/[^\/]+$//;
1751: my %httpref=();
1752: my $httpurl=&hreflocation('',$url);
1753: $httpref{'httpref.'.$httpurl}=$srcurl;
1754: &Apache::lonnet::appenv(\%httpref);
1755: }
1756:
1757: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1758: # input: action, courseID, current domain, intended
1759: # path to file, source of file, instruction to parse file for objects,
1760: # ref to hash for embedded objects,
1761: # ref to hash for codebase of java objects.
1762: #
1763: # output: url to file (if action was uploaddoc),
1764: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1765: #
1766: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1767: # course.
1768: #
1769: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1770: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1771: # course's home server.
1772: #
1773: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1774: # be copied from $source (current location) to
1775: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1776: # and will then be copied to
1777: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1778: # course's home server.
1779: #
1780: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1781: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1782: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1783: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1784: # in course's home server.
1785: #
1786:
1787: sub process_coursefile {
1788: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1789: my $fetchresult;
1790: my $home=&homeserver($docuname,$docudom);
1791: if ($action eq 'propagate') {
1792: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1793: $home);
1794: } else {
1795: my $fpath = '';
1796: my $fname = $file;
1797: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1798: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1799: my $filepath = &build_filepath($fpath);
1800: if ($action eq 'copy') {
1801: if ($source eq '') {
1802: $fetchresult = 'no source file';
1803: return $fetchresult;
1804: } else {
1805: my $destination = $filepath.'/'.$fname;
1806: rename($source,$destination);
1807: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1808: $home);
1809: }
1810: } elsif ($action eq 'uploaddoc') {
1811: open(my $fh,'>'.$filepath.'/'.$fname);
1812: print $fh $env{'form.'.$source};
1813: close($fh);
1814: if ($parser eq 'parse') {
1815: my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);
1816: unless ($parse_result eq 'ok') {
1817: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1818: }
1819: }
1820: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1821: $home);
1822: if ($fetchresult eq 'ok') {
1823: return '/uploaded/'.$fpath.'/'.$fname;
1824: } else {
1825: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1826: ' to host '.$home.': '.$fetchresult);
1827: return '/adm/notfound.html';
1828: }
1829: }
1830: }
1831: unless ( $fetchresult eq 'ok') {
1832: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1833: ' to host '.$home.': '.$fetchresult);
1834: }
1835: return $fetchresult;
1836: }
1837:
1838: sub build_filepath {
1839: my ($fpath) = @_;
1840: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1841: unless ($fpath eq '') {
1842: my @parts=split('/',$fpath);
1843: foreach my $part (@parts) {
1844: $filepath.= '/'.$part;
1845: if ((-e $filepath)!=1) {
1846: mkdir($filepath,0777);
1847: }
1848: }
1849: }
1850: return $filepath;
1851: }
1852:
1853: sub store_edited_file {
1854: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1855: my $file = $primary_url;
1856: $file =~ s#^/uploaded/$docudom/$docuname/##;
1857: my $fpath = '';
1858: my $fname = $file;
1859: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1860: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1861: my $filepath = &build_filepath($fpath);
1862: open(my $fh,'>'.$filepath.'/'.$fname);
1863: print $fh $content;
1864: close($fh);
1865: my $home=&homeserver($docuname,$docudom);
1866: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1867: $home);
1868: if ($$fetchresult eq 'ok') {
1869: return '/uploaded/'.$fpath.'/'.$fname;
1870: } else {
1871: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1872: ' to host '.$home.': '.$$fetchresult);
1873: return '/adm/notfound.html';
1874: }
1875: }
1876:
1877: sub clean_filename {
1878: my ($fname,$args)=@_;
1879: # Replace Windows backslashes by forward slashes
1880: $fname=~s/\\/\//g;
1881: if (!$args->{'keep_path'}) {
1882: # Get rid of everything but the actual filename
1883: $fname=~s/^.*\/([^\/]+)$/$1/;
1884: }
1885: # Replace spaces by underscores
1886: $fname=~s/\s+/\_/g;
1887: # Replace all other weird characters by nothing
1888: $fname=~s{[^/\w\.\-]}{}g;
1889: # Replace all .\d. sequences with _\d. so they no longer look like version
1890: # numbers
1891: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1892: return $fname;
1893: }
1894:
1895: # --------------- Take an uploaded file and put it into the userfiles directory
1896: # input: $formname - the contents of the file are in $env{"form.$formname"}
1897: # the desired filenam is in $env{"form.$formname.filename"}
1898: # $coursedoc - if true up to the current course
1899: # if false
1900: # $subdir - directory in userfile to store the file into
1901: # $parser - instruction to parse file for objects ($parser = parse)
1902: # $allfiles - reference to hash for embedded objects
1903: # $codebase - reference to hash for codebase of java objects
1904: # $desuname - username for permanent storage of uploaded file
1905: # $dsetudom - domain for permanaent storage of uploaded file
1906: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
1907: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
1908: #
1909: # output: url of file in userspace, or error: <message>
1910: # or /adm/notfound.html if failure to upload occurse
1911:
1912:
1913: sub userfileupload {
1914: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
1915: $destudom,$thumbwidth,$thumbheight)=@_;
1916: if (!defined($subdir)) { $subdir='unknown'; }
1917: my $fname=$env{'form.'.$formname.'.filename'};
1918: $fname=&clean_filename($fname);
1919: # See if there is anything left
1920: unless ($fname) { return 'error: no uploaded file'; }
1921: chop($env{'form.'.$formname});
1922: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1923: my $now = time;
1924: my $filepath = 'tmp/helprequests/'.$now;
1925: my @parts=split(/\//,$filepath);
1926: my $fullpath = $perlvar{'lonDaemons'};
1927: for (my $i=0;$i<@parts;$i++) {
1928: $fullpath .= '/'.$parts[$i];
1929: if ((-e $fullpath)!=1) {
1930: mkdir($fullpath,0777);
1931: }
1932: }
1933: open(my $fh,'>'.$fullpath.'/'.$fname);
1934: print $fh $env{'form.'.$formname};
1935: close($fh);
1936: return $fullpath.'/'.$fname;
1937: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
1938: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
1939: '_'.$env{'user.domain'}.'/pending';
1940: my @parts=split(/\//,$filepath);
1941: my $fullpath = $perlvar{'lonDaemons'};
1942: for (my $i=0;$i<@parts;$i++) {
1943: $fullpath .= '/'.$parts[$i];
1944: if ((-e $fullpath)!=1) {
1945: mkdir($fullpath,0777);
1946: }
1947: }
1948: open(my $fh,'>'.$fullpath.'/'.$fname);
1949: print $fh $env{'form.'.$formname};
1950: close($fh);
1951: return $fullpath.'/'.$fname;
1952: }
1953:
1954: # Create the directory if not present
1955: $fname="$subdir/$fname";
1956: if ($coursedoc) {
1957: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1958: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1959: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
1960: return &finishuserfileupload($docuname,$docudom,
1961: $formname,$fname,$parser,$allfiles,
1962: $codebase,$thumbwidth,$thumbheight);
1963: } else {
1964: $fname=$env{'form.folder'}.'/'.$fname;
1965: return &process_coursefile('uploaddoc',$docuname,$docudom,
1966: $fname,$formname,$parser,
1967: $allfiles,$codebase);
1968: }
1969: } elsif (defined($destuname)) {
1970: my $docuname=$destuname;
1971: my $docudom=$destudom;
1972: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1973: $parser,$allfiles,$codebase,
1974: $thumbwidth,$thumbheight);
1975:
1976: } else {
1977: my $docuname=$env{'user.name'};
1978: my $docudom=$env{'user.domain'};
1979: if (exists($env{'form.group'})) {
1980: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1981: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1982: }
1983: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1984: $parser,$allfiles,$codebase,
1985: $thumbwidth,$thumbheight);
1986: }
1987: }
1988:
1989: sub finishuserfileupload {
1990: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
1991: $thumbwidth,$thumbheight) = @_;
1992: my $path=$docudom.'/'.$docuname.'/';
1993: my $filepath=$perlvar{'lonDocRoot'};
1994: my ($fnamepath,$file,$fetchthumb);
1995: $file=$fname;
1996: if ($fname=~m|/|) {
1997: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1998: $path.=$fnamepath.'/';
1999: }
2000: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2001: my $count;
2002: for ($count=4;$count<=$#parts;$count++) {
2003: $filepath.="/$parts[$count]";
2004: if ((-e $filepath)!=1) {
2005: mkdir($filepath,0777);
2006: }
2007: }
2008: # Save the file
2009: {
2010: if (!open(FH,'>'.$filepath.'/'.$file)) {
2011: &logthis('Failed to create '.$filepath.'/'.$file);
2012: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2013: return '/adm/notfound.html';
2014: }
2015: if (!print FH ($env{'form.'.$formname})) {
2016: &logthis('Failed to write to '.$filepath.'/'.$file);
2017: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2018: return '/adm/notfound.html';
2019: }
2020: close(FH);
2021: }
2022: if ($parser eq 'parse') {
2023: my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,
2024: $codebase);
2025: unless ($parse_result eq 'ok') {
2026: &logthis('Failed to parse '.$filepath.$file.
2027: ' for embedded media: '.$parse_result);
2028: }
2029: }
2030: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2031: my $input = $filepath.'/'.$file;
2032: my $output = $filepath.'/'.'tn-'.$file;
2033: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2034: system("convert -sample $thumbsize $input $output");
2035: if (-e $filepath.'/'.'tn-'.$file) {
2036: $fetchthumb = 1;
2037: }
2038: }
2039:
2040: # Notify homeserver to grep it
2041: #
2042: my $docuhome=&homeserver($docuname,$docudom);
2043: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2044: if ($fetchresult eq 'ok') {
2045: if ($fetchthumb) {
2046: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2047: if ($thumbresult ne 'ok') {
2048: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2049: $docuhome.': '.$thumbresult);
2050: }
2051: }
2052: #
2053: # Return the URL to it
2054: return '/uploaded/'.$path.$file;
2055: } else {
2056: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2057: ': '.$fetchresult);
2058: return '/adm/notfound.html';
2059: }
2060: }
2061:
2062: sub extract_embedded_items {
2063: my ($filepath,$file,$allfiles,$codebase,$content) = @_;
2064: my @state = ();
2065: my %javafiles = (
2066: codebase => '',
2067: code => '',
2068: archive => ''
2069: );
2070: my %mediafiles = (
2071: src => '',
2072: movie => '',
2073: );
2074: my $p;
2075: if ($content) {
2076: $p = HTML::LCParser->new($content);
2077: } else {
2078: $p = HTML::LCParser->new($filepath.'/'.$file);
2079: }
2080: while (my $t=$p->get_token()) {
2081: if ($t->[0] eq 'S') {
2082: my ($tagname, $attr) = ($t->[1],$t->[2]);
2083: push(@state, $tagname);
2084: if (lc($tagname) eq 'allow') {
2085: &add_filetype($allfiles,$attr->{'src'},'src');
2086: }
2087: if (lc($tagname) eq 'img') {
2088: &add_filetype($allfiles,$attr->{'src'},'src');
2089: }
2090: if (lc($tagname) eq 'a') {
2091: &add_filetype($allfiles,$attr->{'href'},'href');
2092: }
2093: if (lc($tagname) eq 'script') {
2094: if ($attr->{'archive'} =~ /\.jar$/i) {
2095: &add_filetype($allfiles,$attr->{'archive'},'archive');
2096: } else {
2097: &add_filetype($allfiles,$attr->{'src'},'src');
2098: }
2099: }
2100: if (lc($tagname) eq 'link') {
2101: if (lc($attr->{'rel'}) eq 'stylesheet') {
2102: &add_filetype($allfiles,$attr->{'href'},'href');
2103: }
2104: }
2105: if (lc($tagname) eq 'object' ||
2106: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2107: foreach my $item (keys(%javafiles)) {
2108: $javafiles{$item} = '';
2109: }
2110: }
2111: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2112: my $name = lc($attr->{'name'});
2113: foreach my $item (keys(%javafiles)) {
2114: if ($name eq $item) {
2115: $javafiles{$item} = $attr->{'value'};
2116: last;
2117: }
2118: }
2119: foreach my $item (keys(%mediafiles)) {
2120: if ($name eq $item) {
2121: &add_filetype($allfiles, $attr->{'value'}, 'value');
2122: last;
2123: }
2124: }
2125: }
2126: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2127: foreach my $item (keys(%javafiles)) {
2128: if ($attr->{$item}) {
2129: $javafiles{$item} = $attr->{$item};
2130: last;
2131: }
2132: }
2133: foreach my $item (keys(%mediafiles)) {
2134: if ($attr->{$item}) {
2135: &add_filetype($allfiles,$attr->{$item},$item);
2136: last;
2137: }
2138: }
2139: }
2140: } elsif ($t->[0] eq 'E') {
2141: my ($tagname) = ($t->[1]);
2142: if ($javafiles{'codebase'} ne '') {
2143: $javafiles{'codebase'} .= '/';
2144: }
2145: if (lc($tagname) eq 'applet' ||
2146: lc($tagname) eq 'object' ||
2147: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2148: ) {
2149: foreach my $item (keys(%javafiles)) {
2150: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2151: my $file=$javafiles{'codebase'}.$javafiles{$item};
2152: &add_filetype($allfiles,$file,$item);
2153: }
2154: }
2155: }
2156: pop @state;
2157: }
2158: }
2159: return 'ok';
2160: }
2161:
2162: sub add_filetype {
2163: my ($allfiles,$file,$type)=@_;
2164: if (exists($allfiles->{$file})) {
2165: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2166: push(@{$allfiles->{$file}}, &escape($type));
2167: }
2168: } else {
2169: @{$allfiles->{$file}} = (&escape($type));
2170: }
2171: }
2172:
2173: sub removeuploadedurl {
2174: my ($url)=@_;
2175: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2176: return &removeuserfile($uname,$udom,$fname);
2177: }
2178:
2179: sub removeuserfile {
2180: my ($docuname,$docudom,$fname)=@_;
2181: my $home=&homeserver($docuname,$docudom);
2182: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2183: if ($result eq 'ok') {
2184: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2185: my $metafile = $fname.'.meta';
2186: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2187: my $url = "/uploaded/$docudom/$docuname/$fname";
2188: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2189: my $sqlresult =
2190: &update_portfolio_table($docuname,$docudom,$file,
2191: 'portfolio_metadata',$group,
2192: 'delete');
2193: }
2194: }
2195: return $result;
2196: }
2197:
2198: sub mkdiruserfile {
2199: my ($docuname,$docudom,$dir)=@_;
2200: my $home=&homeserver($docuname,$docudom);
2201: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2202: }
2203:
2204: sub renameuserfile {
2205: my ($docuname,$docudom,$old,$new)=@_;
2206: my $home=&homeserver($docuname,$docudom);
2207: my $result = &reply("renameuserfile:$docudom:$docuname:".
2208: &escape("$old").':'.&escape("$new"),$home);
2209: if ($result eq 'ok') {
2210: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2211: my $oldmeta = $old.'.meta';
2212: my $newmeta = $new.'.meta';
2213: my $metaresult =
2214: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2215: my $url = "/uploaded/$docudom/$docuname/$old";
2216: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2217: my $sqlresult =
2218: &update_portfolio_table($docuname,$docudom,$file,
2219: 'portfolio_metadata',$group,
2220: 'delete');
2221: }
2222: }
2223: return $result;
2224: }
2225:
2226: # ------------------------------------------------------------------------- Log
2227:
2228: sub log {
2229: my ($dom,$nam,$hom,$what)=@_;
2230: return critical("log:$dom:$nam:$what",$hom);
2231: }
2232:
2233: # ------------------------------------------------------------------ Course Log
2234: #
2235: # This routine flushes several buffers of non-mission-critical nature
2236: #
2237:
2238: sub flushcourselogs {
2239: &logthis('Flushing log buffers');
2240: #
2241: # course logs
2242: # This is a log of all transactions in a course, which can be used
2243: # for data mining purposes
2244: #
2245: # It also collects the courseid database, which lists last transaction
2246: # times and course titles for all courseids
2247: #
2248: my %courseidbuffer=();
2249: foreach my $crsid (keys(%courselogs)) {
2250: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2251: &escape($courselogs{$crsid}),
2252: $coursehombuf{$crsid}) eq 'ok') {
2253: delete $courselogs{$crsid};
2254: } else {
2255: &logthis('Failed to flush log buffer for '.$crsid);
2256: if (length($courselogs{$crsid})>40000) {
2257: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2258: " exceeded maximum size, deleting.</font>");
2259: delete $courselogs{$crsid};
2260: }
2261: }
2262: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2263: 'description' => $coursedescrbuf{$crsid},
2264: 'inst_code' => $courseinstcodebuf{$crsid},
2265: 'type' => $coursetypebuf{$crsid},
2266: 'owner' => $courseownerbuf{$crsid},
2267: };
2268: }
2269: #
2270: # Write course id database (reverse lookup) to homeserver of courses
2271: # Is used in pickcourse
2272: #
2273: foreach my $crs_home (keys(%courseidbuffer)) {
2274: my $response = &courseidput(&host_domain($crs_home),
2275: $courseidbuffer{$crs_home},
2276: $crs_home,'timeonly');
2277: }
2278: #
2279: # File accesses
2280: # Writes to the dynamic metadata of resources to get hit counts, etc.
2281: #
2282: foreach my $entry (keys(%accesshash)) {
2283: if ($entry =~ /___count$/) {
2284: my ($dom,$name);
2285: ($dom,$name,undef)=
2286: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2287: if (! defined($dom) || $dom eq '' ||
2288: ! defined($name) || $name eq '') {
2289: my $cid = $env{'request.course.id'};
2290: $dom = $env{'request.'.$cid.'.domain'};
2291: $name = $env{'request.'.$cid.'.num'};
2292: }
2293: my $value = $accesshash{$entry};
2294: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2295: my %temphash=($url => $value);
2296: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2297: if ($result eq 'ok') {
2298: delete $accesshash{$entry};
2299: } elsif ($result eq 'unknown_cmd') {
2300: # Target server has old code running on it.
2301: my %temphash=($entry => $value);
2302: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2303: delete $accesshash{$entry};
2304: }
2305: }
2306: } else {
2307: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2308: my %temphash=($entry => $accesshash{$entry});
2309: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2310: delete $accesshash{$entry};
2311: }
2312: }
2313: }
2314: #
2315: # Roles
2316: # Reverse lookup of user roles for course faculty/staff and co-authorship
2317: #
2318: foreach my $entry (keys(%userrolehash)) {
2319: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2320: split(/\:/,$entry);
2321: if (&Apache::lonnet::put('nohist_userroles',
2322: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2323: $rudom,$runame) eq 'ok') {
2324: delete $userrolehash{$entry};
2325: }
2326: }
2327: #
2328: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2329: #
2330: my %domrolebuffer = ();
2331: foreach my $entry (keys %domainrolehash) {
2332: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2333: if ($domrolebuffer{$rudom}) {
2334: $domrolebuffer{$rudom}.='&'.&escape($entry).
2335: '='.&escape($domainrolehash{$entry});
2336: } else {
2337: $domrolebuffer{$rudom}.=&escape($entry).
2338: '='.&escape($domainrolehash{$entry});
2339: }
2340: delete $domainrolehash{$entry};
2341: }
2342: foreach my $dom (keys(%domrolebuffer)) {
2343: my %servers = &get_servers($dom,'library');
2344: foreach my $tryserver (keys(%servers)) {
2345: unless (&reply('domroleput:'.$dom.':'.
2346: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2347: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2348: }
2349: }
2350: }
2351: $dumpcount++;
2352: }
2353:
2354: sub courselog {
2355: my $what=shift;
2356: $what=time.':'.$what;
2357: unless ($env{'request.course.id'}) { return ''; }
2358: $coursedombuf{$env{'request.course.id'}}=
2359: $env{'course.'.$env{'request.course.id'}.'.domain'};
2360: $coursenumbuf{$env{'request.course.id'}}=
2361: $env{'course.'.$env{'request.course.id'}.'.num'};
2362: $coursehombuf{$env{'request.course.id'}}=
2363: $env{'course.'.$env{'request.course.id'}.'.home'};
2364: $coursedescrbuf{$env{'request.course.id'}}=
2365: $env{'course.'.$env{'request.course.id'}.'.description'};
2366: $courseinstcodebuf{$env{'request.course.id'}}=
2367: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2368: $courseownerbuf{$env{'request.course.id'}}=
2369: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2370: $coursetypebuf{$env{'request.course.id'}}=
2371: $env{'course.'.$env{'request.course.id'}.'.type'};
2372: if (defined $courselogs{$env{'request.course.id'}}) {
2373: $courselogs{$env{'request.course.id'}}.='&'.$what;
2374: } else {
2375: $courselogs{$env{'request.course.id'}}.=$what;
2376: }
2377: if (length($courselogs{$env{'request.course.id'}})>4048) {
2378: &flushcourselogs();
2379: }
2380: }
2381:
2382: sub courseacclog {
2383: my $fnsymb=shift;
2384: unless ($env{'request.course.id'}) { return ''; }
2385: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2386: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2387: $what.=':POST';
2388: # FIXME: Probably ought to escape things....
2389: foreach my $key (keys(%env)) {
2390: if ($key=~/^form\.(.*)/) {
2391: $what.=':'.$1.'='.$env{$key};
2392: }
2393: }
2394: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2395: # FIXME: We should not be depending on a form parameter that someone
2396: # editing lonsearchcat.pm might change in the future.
2397: if ($env{'form.phase'} eq 'course_search') {
2398: $what.= ':POST';
2399: # FIXME: Probably ought to escape things....
2400: foreach my $element ('courseexp','crsfulltext','crsrelated',
2401: 'crsdiscuss') {
2402: $what.=':'.$element.'='.$env{'form.'.$element};
2403: }
2404: }
2405: }
2406: &courselog($what);
2407: }
2408:
2409: sub countacc {
2410: my $url=&declutter(shift);
2411: return if (! defined($url) || $url eq '');
2412: unless ($env{'request.course.id'}) { return ''; }
2413: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2414: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2415: $accesshash{$key}++;
2416: }
2417:
2418: sub linklog {
2419: my ($from,$to)=@_;
2420: $from=&declutter($from);
2421: $to=&declutter($to);
2422: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2423: $accesshash{$to.'___'.$from.'___goto'}=1;
2424: }
2425:
2426: sub userrolelog {
2427: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2428: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2429: ($trole=~/^in/) || ($trole=~/^cc/) ||
2430: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2431: ($trole=~/^ta/)) {
2432: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2433: $userrolehash
2434: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2435: =$tend.':'.$tstart;
2436: }
2437: if (($env{'request.role'} =~ /dc\./) &&
2438: (($trole=~/^au/) || ($trole=~/^in/) ||
2439: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2440: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2441: $userrolehash
2442: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2443: =$tend.':'.$tstart;
2444: }
2445: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2446: ($trole=~/^li/) || ($trole=~/^li/) ||
2447: ($trole=~/^au/) || ($trole=~/^dg/) ||
2448: ($trole=~/^sc/)) {
2449: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2450: $domainrolehash
2451: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2452: = $tend.':'.$tstart;
2453: }
2454: }
2455:
2456: sub get_course_adv_roles {
2457: my ($cid,$codes) = @_;
2458: $cid=$env{'request.course.id'} unless (defined($cid));
2459: my %coursehash=&coursedescription($cid);
2460: my %nothide=();
2461: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2462: if ($user !~ /:/) {
2463: $nothide{join(':',split(/[\@]/,$user))}=1;
2464: } else {
2465: $nothide{$user}=1;
2466: }
2467: }
2468: my %returnhash=();
2469: my %dumphash=
2470: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2471: my $now=time;
2472: foreach my $entry (keys %dumphash) {
2473: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2474: if (($tstart) && ($tstart<0)) { next; }
2475: if (($tend) && ($tend<$now)) { next; }
2476: if (($tstart) && ($now<$tstart)) { next; }
2477: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2478: if ($username eq '' || $domain eq '') { next; }
2479: if ((&privileged($username,$domain)) &&
2480: (!$nothide{$username.':'.$domain})) { next; }
2481: if ($role eq 'cr') { next; }
2482: if ($codes) {
2483: if ($section) { $role .= ':'.$section; }
2484: if ($returnhash{$role}) {
2485: $returnhash{$role}.=','.$username.':'.$domain;
2486: } else {
2487: $returnhash{$role}=$username.':'.$domain;
2488: }
2489: } else {
2490: my $key=&plaintext($role);
2491: if ($section) { $key.=' (Section '.$section.')'; }
2492: if ($returnhash{$key}) {
2493: $returnhash{$key}.=','.$username.':'.$domain;
2494: } else {
2495: $returnhash{$key}=$username.':'.$domain;
2496: }
2497: }
2498: }
2499: return %returnhash;
2500: }
2501:
2502: sub get_my_roles {
2503: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2504: unless (defined($uname)) { $uname=$env{'user.name'}; }
2505: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2506: my (%dumphash,%nothide);
2507: if ($context eq 'userroles') {
2508: %dumphash = &dump('roles',$udom,$uname);
2509: } else {
2510: %dumphash=
2511: &dump('nohist_userroles',$udom,$uname);
2512: if ($hidepriv) {
2513: my %coursehash=&coursedescription($udom.'_'.$uname);
2514: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2515: if ($user !~ /:/) {
2516: $nothide{join(':',split(/[\@]/,$user))} = 1;
2517: } else {
2518: $nothide{$user} = 1;
2519: }
2520: }
2521: }
2522: }
2523: my %returnhash=();
2524: my $now=time;
2525: foreach my $entry (keys(%dumphash)) {
2526: my ($role,$tend,$tstart);
2527: if ($context eq 'userroles') {
2528: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2529: } else {
2530: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2531: }
2532: if (($tstart) && ($tstart<0)) { next; }
2533: my $status = 'active';
2534: if (($tend) && ($tend<=$now)) {
2535: $status = 'previous';
2536: }
2537: if (($tstart) && ($now<$tstart)) {
2538: $status = 'future';
2539: }
2540: if (ref($types) eq 'ARRAY') {
2541: if (!grep(/^\Q$status\E$/,@{$types})) {
2542: next;
2543: }
2544: } else {
2545: if ($status ne 'active') {
2546: next;
2547: }
2548: }
2549: my ($rolecode,$username,$domain,$section,$area);
2550: if ($context eq 'userroles') {
2551: ($area,$rolecode) = split(/_/,$entry);
2552: (undef,$domain,$username,$section) = split(/\//,$area);
2553: } else {
2554: ($role,$username,$domain,$section) = split(/\:/,$entry);
2555: }
2556: if (ref($roledoms) eq 'ARRAY') {
2557: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2558: next;
2559: }
2560: }
2561: if (ref($roles) eq 'ARRAY') {
2562: if (!grep(/^\Q$role\E$/,@{$roles})) {
2563: if ($role =~ /^cr\//) {
2564: if (!grep(/^cr$/,@{$roles})) {
2565: next;
2566: }
2567: } else {
2568: next;
2569: }
2570: }
2571: }
2572: if ($hidepriv) {
2573: if ((&privileged($username,$domain)) &&
2574: (!$nothide{$username.':'.$domain})) {
2575: next;
2576: }
2577: }
2578: if ($withsec) {
2579: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2580: $tstart.':'.$tend;
2581: } else {
2582: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2583: }
2584: }
2585: return %returnhash;
2586: }
2587:
2588: # ----------------------------------------------------- Frontpage Announcements
2589: #
2590: #
2591:
2592: sub postannounce {
2593: my ($server,$text)=@_;
2594: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2595: unless ($text=~/\w/) { $text=''; }
2596: return &reply('setannounce:'.&escape($text),$server);
2597: }
2598:
2599: sub getannounce {
2600:
2601: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2602: my $announcement='';
2603: while (my $line = <$fh>) { $announcement .= $line; }
2604: close($fh);
2605: if ($announcement=~/\w/) {
2606: return
2607: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2608: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2609: } else {
2610: return '';
2611: }
2612: } else {
2613: return '';
2614: }
2615: }
2616:
2617: # ---------------------------------------------------------- Course ID routines
2618: # Deal with domain's nohist_courseid.db files
2619: #
2620:
2621: sub courseidput {
2622: my ($domain,$storehash,$coursehome,$caller) = @_;
2623: my $outcome;
2624: if ($caller eq 'timeonly') {
2625: my $cids = '';
2626: foreach my $item (keys(%$storehash)) {
2627: $cids.=&escape($item).'&';
2628: }
2629: $cids=~s/\&$//;
2630: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
2631: $coursehome);
2632: } else {
2633: my $items = '';
2634: foreach my $item (keys(%$storehash)) {
2635: $items.= &escape($item).'='.
2636: &freeze_escape($$storehash{$item}).'&';
2637: }
2638: $items=~s/\&$//;
2639: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
2640: $coursehome);
2641: }
2642: if ($outcome eq 'unknown_cmd') {
2643: my $what;
2644: foreach my $cid (keys(%$storehash)) {
2645: $what .= &escape($cid).'=';
2646: foreach my $item ('description','inst_code','owner','type') {
2647: $what .= &escape($storehash->{$cid}{$item}).':';
2648: }
2649: $what =~ s/\:$/&/;
2650: }
2651: $what =~ s/\&$//;
2652: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2653: } else {
2654: return $outcome;
2655: }
2656: }
2657:
2658: sub courseiddump {
2659: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
2660: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
2661: $selfenrollonly)=@_;
2662: my $as_hash = 1;
2663: my %returnhash;
2664: if (!$domfilter) { $domfilter=''; }
2665: my %libserv = &all_library();
2666: foreach my $tryserver (keys(%libserv)) {
2667: if ( ( $hostidflag == 1
2668: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2669: || (!defined($hostidflag)) ) {
2670:
2671: if (($domfilter eq '') ||
2672: (&host_domain($tryserver) eq $domfilter)) {
2673: my $rep =
2674: &reply('courseiddump:'.&host_domain($tryserver).':'.
2675: $sincefilter.':'.&escape($descfilter).':'.
2676: &escape($instcodefilter).':'.&escape($ownerfilter).
2677: ':'.&escape($coursefilter).':'.&escape($typefilter).
2678: ':'.&escape($regexp_ok).':'.$as_hash.':'.
2679: &escape($selfenrollonly),$tryserver);
2680: my @pairs=split(/\&/,$rep);
2681: foreach my $item (@pairs) {
2682: my ($key,$value)=split(/\=/,$item,2);
2683: $key = &unescape($key);
2684: next if ($key =~ /^error: 2 /);
2685: my $result = &thaw_unescape($value);
2686: if (ref($result) eq 'HASH') {
2687: $returnhash{$key}=$result;
2688: } else {
2689: my @responses = split(/:/,$value);
2690: my @items = ('description','inst_code','owner','type');
2691: for (my $i=0; $i<@responses; $i++) {
2692: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
2693: }
2694: }
2695: }
2696: }
2697: }
2698: }
2699: return %returnhash;
2700: }
2701:
2702: # ---------------------------------------------------------- DC e-mail
2703:
2704: sub dcmailput {
2705: my ($domain,$msgid,$message,$server)=@_;
2706: my $status = &Apache::lonnet::critical(
2707: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2708: &escape($message),$server);
2709: return $status;
2710: }
2711:
2712: sub dcmaildump {
2713: my ($dom,$startdate,$enddate,$senders) = @_;
2714: my %returnhash=();
2715:
2716: if (defined(&domain($dom,'primary'))) {
2717: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2718: &escape($enddate).':';
2719: my @esc_senders=map { &escape($_)} @$senders;
2720: $cmd.=&escape(join('&',@esc_senders));
2721: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2722: my ($key,$value) = split(/\=/,$line,2);
2723: if (($key) && ($value)) {
2724: $returnhash{&unescape($key)} = &unescape($value);
2725: }
2726: }
2727: }
2728: return %returnhash;
2729: }
2730: # ---------------------------------------------------------- Domain roles
2731:
2732: sub get_domain_roles {
2733: my ($dom,$roles,$startdate,$enddate)=@_;
2734: if (undef($startdate) || $startdate eq '') {
2735: $startdate = '.';
2736: }
2737: if (undef($enddate) || $enddate eq '') {
2738: $enddate = '.';
2739: }
2740: my $rolelist;
2741: if (ref($roles) eq 'ARRAY') {
2742: $rolelist = join(':',@{$roles});
2743: }
2744: my %personnel = ();
2745:
2746: my %servers = &get_servers($dom,'library');
2747: foreach my $tryserver (keys(%servers)) {
2748: %{$personnel{$tryserver}}=();
2749: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2750: &escape($startdate).':'.
2751: &escape($enddate).':'.
2752: &escape($rolelist), $tryserver))) {
2753: my ($key,$value) = split(/\=/,$line,2);
2754: if (($key) && ($value)) {
2755: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2756: }
2757: }
2758: }
2759: return %personnel;
2760: }
2761:
2762: # ----------------------------------------------------------- Check out an item
2763:
2764: sub get_first_access {
2765: my ($type,$argsymb)=@_;
2766: my ($symb,$courseid,$udom,$uname)=&whichuser();
2767: if ($argsymb) { $symb=$argsymb; }
2768: my ($map,$id,$res)=&decode_symb($symb);
2769: if ($type eq 'course') {
2770: $res='course';
2771: } elsif ($type eq 'map') {
2772: $res=&symbread($map);
2773: } else {
2774: $res=$symb;
2775: }
2776: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2777: return $times{"$courseid\0$res"};
2778: }
2779:
2780: sub set_first_access {
2781: my ($type)=@_;
2782: my ($symb,$courseid,$udom,$uname)=&whichuser();
2783: my ($map,$id,$res)=&decode_symb($symb);
2784: if ($type eq 'course') {
2785: $res='course';
2786: } elsif ($type eq 'map') {
2787: $res=&symbread($map);
2788: } else {
2789: $res=$symb;
2790: }
2791: my $firstaccess=&get_first_access($type,$symb);
2792: if (!$firstaccess) {
2793: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2794: }
2795: return 'already_set';
2796: }
2797:
2798: sub checkout {
2799: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2800: my $now=time;
2801: my $lonhost=$perlvar{'lonHostID'};
2802: my $infostr=&escape(
2803: 'CHECKOUTTOKEN&'.
2804: $tuname.'&'.
2805: $tudom.'&'.
2806: $tcrsid.'&'.
2807: $symb.'&'.
2808: $now.'&'.$ENV{'REMOTE_ADDR'});
2809: my $token=&reply('tmpput:'.$infostr,$lonhost);
2810: if ($token=~/^error\:/) {
2811: &logthis("<font color=\"blue\">WARNING: ".
2812: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2813: "</font>");
2814: return '';
2815: }
2816:
2817: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2818: $token=~tr/a-z/A-Z/;
2819:
2820: my %infohash=('resource.0.outtoken' => $token,
2821: 'resource.0.checkouttime' => $now,
2822: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2823:
2824: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2825: return '';
2826: } else {
2827: &logthis("<font color=\"blue\">WARNING: ".
2828: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2829: "</font>");
2830: }
2831:
2832: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2833: &escape('Checkout '.$infostr.' - '.
2834: $token)) ne 'ok') {
2835: return '';
2836: } else {
2837: &logthis("<font color=\"blue\">WARNING: ".
2838: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2839: "</font>");
2840: }
2841: return $token;
2842: }
2843:
2844: # ------------------------------------------------------------ Check in an item
2845:
2846: sub checkin {
2847: my $token=shift;
2848: my $now=time;
2849: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2850: $lonhost=~tr/A-Z/a-z/;
2851: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2852: $dtoken=~s/\W/\_/g;
2853: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2854: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2855:
2856: unless (($tuname) && ($tudom)) {
2857: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2858: return '';
2859: }
2860:
2861: unless (&allowed('mgr',$tcrsid)) {
2862: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
2863: $env{'user.name'}.' - '.$env{'user.domain'});
2864: return '';
2865: }
2866:
2867: my %infohash=('resource.0.intoken' => $token,
2868: 'resource.0.checkintime' => $now,
2869: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
2870:
2871: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2872: return '';
2873: }
2874:
2875: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2876: &escape('Checkin - '.$token)) ne 'ok') {
2877: return '';
2878: }
2879:
2880: return ($symb,$tuname,$tudom,$tcrsid);
2881: }
2882:
2883: # --------------------------------------------- Set Expire Date for Spreadsheet
2884:
2885: sub expirespread {
2886: my ($uname,$udom,$stype,$usymb)=@_;
2887: my $cid=$env{'request.course.id'};
2888: if ($cid) {
2889: my $now=time;
2890: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2891: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
2892: $env{'course.'.$cid.'.num'}.
2893: ':nohist_expirationdates:'.
2894: &escape($key).'='.$now,
2895: $env{'course.'.$cid.'.home'})
2896: }
2897: return 'ok';
2898: }
2899:
2900: # ----------------------------------------------------- Devalidate Spreadsheets
2901:
2902: sub devalidate {
2903: my ($symb,$uname,$udom)=@_;
2904: my $cid=$env{'request.course.id'};
2905: if ($cid) {
2906: # delete the stored spreadsheets for
2907: # - the student level sheet of this user in course's homespace
2908: # - the assessment level sheet for this resource
2909: # for this user in user's homespace
2910: # - current conditional state info
2911: my $key=$uname.':'.$udom.':';
2912: my $status=
2913: &del('nohist_calculatedsheets',
2914: [$key.'studentcalc:'],
2915: $env{'course.'.$cid.'.domain'},
2916: $env{'course.'.$cid.'.num'})
2917: .' '.
2918: &del('nohist_calculatedsheets_'.$cid,
2919: [$key.'assesscalc:'.$symb],$udom,$uname);
2920: unless ($status eq 'ok ok') {
2921: &logthis('Could not devalidate spreadsheet '.
2922: $uname.' at '.$udom.' for '.
2923: $symb.': '.$status);
2924: }
2925: &delenv('user.state.'.$cid);
2926: }
2927: }
2928:
2929: sub get_scalar {
2930: my ($string,$end) = @_;
2931: my $value;
2932: if ($$string =~ s/^([^&]*?)($end)/$2/) {
2933: $value = $1;
2934: } elsif ($$string =~ s/^([^&]*?)&//) {
2935: $value = $1;
2936: }
2937: return &unescape($value);
2938: }
2939:
2940: sub array2str {
2941: my (@array) = @_;
2942: my $result=&arrayref2str(\@array);
2943: $result=~s/^__ARRAY_REF__//;
2944: $result=~s/__END_ARRAY_REF__$//;
2945: return $result;
2946: }
2947:
2948: sub arrayref2str {
2949: my ($arrayref) = @_;
2950: my $result='__ARRAY_REF__';
2951: foreach my $elem (@$arrayref) {
2952: if(ref($elem) eq 'ARRAY') {
2953: $result.=&arrayref2str($elem).'&';
2954: } elsif(ref($elem) eq 'HASH') {
2955: $result.=&hashref2str($elem).'&';
2956: } elsif(ref($elem)) {
2957: #print("Got a ref of ".(ref($elem))." skipping.");
2958: } else {
2959: $result.=&escape($elem).'&';
2960: }
2961: }
2962: $result=~s/\&$//;
2963: $result .= '__END_ARRAY_REF__';
2964: return $result;
2965: }
2966:
2967: sub hash2str {
2968: my (%hash) = @_;
2969: my $result=&hashref2str(\%hash);
2970: $result=~s/^__HASH_REF__//;
2971: $result=~s/__END_HASH_REF__$//;
2972: return $result;
2973: }
2974:
2975: sub hashref2str {
2976: my ($hashref)=@_;
2977: my $result='__HASH_REF__';
2978: foreach my $key (sort(keys(%$hashref))) {
2979: if (ref($key) eq 'ARRAY') {
2980: $result.=&arrayref2str($key).'=';
2981: } elsif (ref($key) eq 'HASH') {
2982: $result.=&hashref2str($key).'=';
2983: } elsif (ref($key)) {
2984: $result.='=';
2985: #print("Got a ref of ".(ref($key))." skipping.");
2986: } else {
2987: if ($key) {$result.=&escape($key).'=';} else { last; }
2988: }
2989:
2990: if(ref($hashref->{$key}) eq 'ARRAY') {
2991: $result.=&arrayref2str($hashref->{$key}).'&';
2992: } elsif(ref($hashref->{$key}) eq 'HASH') {
2993: $result.=&hashref2str($hashref->{$key}).'&';
2994: } elsif(ref($hashref->{$key})) {
2995: $result.='&';
2996: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
2997: } else {
2998: $result.=&escape($hashref->{$key}).'&';
2999: }
3000: }
3001: $result=~s/\&$//;
3002: $result .= '__END_HASH_REF__';
3003: return $result;
3004: }
3005:
3006: sub str2hash {
3007: my ($string)=@_;
3008: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3009: return %$hash;
3010: }
3011:
3012: sub str2hashref {
3013: my ($string) = @_;
3014:
3015: my %hash;
3016:
3017: if($string !~ /^__HASH_REF__/) {
3018: if (! ($string eq '' || !defined($string))) {
3019: $hash{'error'}='Not hash reference';
3020: }
3021: return (\%hash, $string);
3022: }
3023:
3024: $string =~ s/^__HASH_REF__//;
3025:
3026: while($string !~ /^__END_HASH_REF__/) {
3027: #key
3028: my $key='';
3029: if($string =~ /^__HASH_REF__/) {
3030: ($key, $string)=&str2hashref($string);
3031: if(defined($key->{'error'})) {
3032: $hash{'error'}='Bad data';
3033: return (\%hash, $string);
3034: }
3035: } elsif($string =~ /^__ARRAY_REF__/) {
3036: ($key, $string)=&str2arrayref($string);
3037: if($key->[0] eq 'Array reference error') {
3038: $hash{'error'}='Bad data';
3039: return (\%hash, $string);
3040: }
3041: } else {
3042: $string =~ s/^(.*?)=//;
3043: $key=&unescape($1);
3044: }
3045: $string =~ s/^=//;
3046:
3047: #value
3048: my $value='';
3049: if($string =~ /^__HASH_REF__/) {
3050: ($value, $string)=&str2hashref($string);
3051: if(defined($value->{'error'})) {
3052: $hash{'error'}='Bad data';
3053: return (\%hash, $string);
3054: }
3055: } elsif($string =~ /^__ARRAY_REF__/) {
3056: ($value, $string)=&str2arrayref($string);
3057: if($value->[0] eq 'Array reference error') {
3058: $hash{'error'}='Bad data';
3059: return (\%hash, $string);
3060: }
3061: } else {
3062: $value=&get_scalar(\$string,'__END_HASH_REF__');
3063: }
3064: $string =~ s/^&//;
3065:
3066: $hash{$key}=$value;
3067: }
3068:
3069: $string =~ s/^__END_HASH_REF__//;
3070:
3071: return (\%hash, $string);
3072: }
3073:
3074: sub str2array {
3075: my ($string)=@_;
3076: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3077: return @$array;
3078: }
3079:
3080: sub str2arrayref {
3081: my ($string) = @_;
3082: my @array;
3083:
3084: if($string !~ /^__ARRAY_REF__/) {
3085: if (! ($string eq '' || !defined($string))) {
3086: $array[0]='Array reference error';
3087: }
3088: return (\@array, $string);
3089: }
3090:
3091: $string =~ s/^__ARRAY_REF__//;
3092:
3093: while($string !~ /^__END_ARRAY_REF__/) {
3094: my $value='';
3095: if($string =~ /^__HASH_REF__/) {
3096: ($value, $string)=&str2hashref($string);
3097: if(defined($value->{'error'})) {
3098: $array[0] ='Array reference error';
3099: return (\@array, $string);
3100: }
3101: } elsif($string =~ /^__ARRAY_REF__/) {
3102: ($value, $string)=&str2arrayref($string);
3103: if($value->[0] eq 'Array reference error') {
3104: $array[0] ='Array reference error';
3105: return (\@array, $string);
3106: }
3107: } else {
3108: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3109: }
3110: $string =~ s/^&//;
3111:
3112: push(@array, $value);
3113: }
3114:
3115: $string =~ s/^__END_ARRAY_REF__//;
3116:
3117: return (\@array, $string);
3118: }
3119:
3120: # -------------------------------------------------------------------Temp Store
3121:
3122: sub tmpreset {
3123: my ($symb,$namespace,$domain,$stuname) = @_;
3124: if (!$symb) {
3125: $symb=&symbread();
3126: if (!$symb) { $symb= $env{'request.url'}; }
3127: }
3128: $symb=escape($symb);
3129:
3130: if (!$namespace) { $namespace=$env{'request.state'}; }
3131: $namespace=~s/\//\_/g;
3132: $namespace=~s/\W//g;
3133:
3134: if (!$domain) { $domain=$env{'user.domain'}; }
3135: if (!$stuname) { $stuname=$env{'user.name'}; }
3136: if ($domain eq 'public' && $stuname eq 'public') {
3137: $stuname=$ENV{'REMOTE_ADDR'};
3138: }
3139: my $path=$perlvar{'lonDaemons'}.'/tmp';
3140: my %hash;
3141: if (tie(%hash,'GDBM_File',
3142: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3143: &GDBM_WRCREAT(),0640)) {
3144: foreach my $key (keys %hash) {
3145: if ($key=~ /:$symb/) {
3146: delete($hash{$key});
3147: }
3148: }
3149: }
3150: }
3151:
3152: sub tmpstore {
3153: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3154:
3155: if (!$symb) {
3156: $symb=&symbread();
3157: if (!$symb) { $symb= $env{'request.url'}; }
3158: }
3159: $symb=escape($symb);
3160:
3161: if (!$namespace) {
3162: # I don't think we would ever want to store this for a course.
3163: # it seems this will only be used if we don't have a course.
3164: #$namespace=$env{'request.course.id'};
3165: #if (!$namespace) {
3166: $namespace=$env{'request.state'};
3167: #}
3168: }
3169: $namespace=~s/\//\_/g;
3170: $namespace=~s/\W//g;
3171: if (!$domain) { $domain=$env{'user.domain'}; }
3172: if (!$stuname) { $stuname=$env{'user.name'}; }
3173: if ($domain eq 'public' && $stuname eq 'public') {
3174: $stuname=$ENV{'REMOTE_ADDR'};
3175: }
3176: my $now=time;
3177: my %hash;
3178: my $path=$perlvar{'lonDaemons'}.'/tmp';
3179: if (tie(%hash,'GDBM_File',
3180: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3181: &GDBM_WRCREAT(),0640)) {
3182: $hash{"version:$symb"}++;
3183: my $version=$hash{"version:$symb"};
3184: my $allkeys='';
3185: foreach my $key (keys(%$storehash)) {
3186: $allkeys.=$key.':';
3187: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3188: }
3189: $hash{"$version:$symb:timestamp"}=$now;
3190: $allkeys.='timestamp';
3191: $hash{"$version:keys:$symb"}=$allkeys;
3192: if (untie(%hash)) {
3193: return 'ok';
3194: } else {
3195: return "error:$!";
3196: }
3197: } else {
3198: return "error:$!";
3199: }
3200: }
3201:
3202: # -----------------------------------------------------------------Temp Restore
3203:
3204: sub tmprestore {
3205: my ($symb,$namespace,$domain,$stuname) = @_;
3206:
3207: if (!$symb) {
3208: $symb=&symbread();
3209: if (!$symb) { $symb= $env{'request.url'}; }
3210: }
3211: $symb=escape($symb);
3212:
3213: if (!$namespace) { $namespace=$env{'request.state'}; }
3214:
3215: if (!$domain) { $domain=$env{'user.domain'}; }
3216: if (!$stuname) { $stuname=$env{'user.name'}; }
3217: if ($domain eq 'public' && $stuname eq 'public') {
3218: $stuname=$ENV{'REMOTE_ADDR'};
3219: }
3220: my %returnhash;
3221: $namespace=~s/\//\_/g;
3222: $namespace=~s/\W//g;
3223: my %hash;
3224: my $path=$perlvar{'lonDaemons'}.'/tmp';
3225: if (tie(%hash,'GDBM_File',
3226: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3227: &GDBM_READER(),0640)) {
3228: my $version=$hash{"version:$symb"};
3229: $returnhash{'version'}=$version;
3230: my $scope;
3231: for ($scope=1;$scope<=$version;$scope++) {
3232: my $vkeys=$hash{"$scope:keys:$symb"};
3233: my @keys=split(/:/,$vkeys);
3234: my $key;
3235: $returnhash{"$scope:keys"}=$vkeys;
3236: foreach $key (@keys) {
3237: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3238: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3239: }
3240: }
3241: if (!(untie(%hash))) {
3242: return "error:$!";
3243: }
3244: } else {
3245: return "error:$!";
3246: }
3247: return %returnhash;
3248: }
3249:
3250: # ----------------------------------------------------------------------- Store
3251:
3252: sub store {
3253: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3254: my $home='';
3255:
3256: if ($stuname) { $home=&homeserver($stuname,$domain); }
3257:
3258: $symb=&symbclean($symb);
3259: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3260:
3261: if (!$domain) { $domain=$env{'user.domain'}; }
3262: if (!$stuname) { $stuname=$env{'user.name'}; }
3263:
3264: &devalidate($symb,$stuname,$domain);
3265:
3266: $symb=escape($symb);
3267: if (!$namespace) {
3268: unless ($namespace=$env{'request.course.id'}) {
3269: return '';
3270: }
3271: }
3272: if (!$home) { $home=$env{'user.home'}; }
3273:
3274: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3275: $$storehash{'host'}=$perlvar{'lonHostID'};
3276:
3277: my $namevalue='';
3278: foreach my $key (keys(%$storehash)) {
3279: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3280: }
3281: $namevalue=~s/\&$//;
3282: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3283: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3284: }
3285:
3286: # -------------------------------------------------------------- Critical Store
3287:
3288: sub cstore {
3289: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3290: my $home='';
3291:
3292: if ($stuname) { $home=&homeserver($stuname,$domain); }
3293:
3294: $symb=&symbclean($symb);
3295: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3296:
3297: if (!$domain) { $domain=$env{'user.domain'}; }
3298: if (!$stuname) { $stuname=$env{'user.name'}; }
3299:
3300: &devalidate($symb,$stuname,$domain);
3301:
3302: $symb=escape($symb);
3303: if (!$namespace) {
3304: unless ($namespace=$env{'request.course.id'}) {
3305: return '';
3306: }
3307: }
3308: if (!$home) { $home=$env{'user.home'}; }
3309:
3310: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3311: $$storehash{'host'}=$perlvar{'lonHostID'};
3312:
3313: my $namevalue='';
3314: foreach my $key (keys(%$storehash)) {
3315: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3316: }
3317: $namevalue=~s/\&$//;
3318: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3319: return critical
3320: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3321: }
3322:
3323: # --------------------------------------------------------------------- Restore
3324:
3325: sub restore {
3326: my ($symb,$namespace,$domain,$stuname) = @_;
3327: my $home='';
3328:
3329: if ($stuname) { $home=&homeserver($stuname,$domain); }
3330:
3331: if (!$symb) {
3332: unless ($symb=escape(&symbread())) { return ''; }
3333: } else {
3334: $symb=&escape(&symbclean($symb));
3335: }
3336: if (!$namespace) {
3337: unless ($namespace=$env{'request.course.id'}) {
3338: return '';
3339: }
3340: }
3341: if (!$domain) { $domain=$env{'user.domain'}; }
3342: if (!$stuname) { $stuname=$env{'user.name'}; }
3343: if (!$home) { $home=$env{'user.home'}; }
3344: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3345:
3346: my %returnhash=();
3347: foreach my $line (split(/\&/,$answer)) {
3348: my ($name,$value)=split(/\=/,$line);
3349: $returnhash{&unescape($name)}=&thaw_unescape($value);
3350: }
3351: my $version;
3352: for ($version=1;$version<=$returnhash{'version'};$version++) {
3353: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3354: $returnhash{$item}=$returnhash{$version.':'.$item};
3355: }
3356: }
3357: return %returnhash;
3358: }
3359:
3360: # ---------------------------------------------------------- Course Description
3361:
3362: sub coursedescription {
3363: my ($courseid,$args)=@_;
3364: $courseid=~s/^\///;
3365: $courseid=~s/\_/\//g;
3366: my ($cdomain,$cnum)=split(/\//,$courseid);
3367: my $chome=&homeserver($cnum,$cdomain);
3368: my $normalid=$cdomain.'_'.$cnum;
3369: # need to always cache even if we get errors otherwise we keep
3370: # trying and trying and trying to get the course description.
3371: my %envhash=();
3372: my %returnhash=();
3373:
3374: my $expiretime=600;
3375: if ($env{'request.course.id'} eq $normalid) {
3376: $expiretime=120;
3377: }
3378:
3379: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3380: if (!$args->{'freshen_cache'}
3381: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3382: foreach my $key (keys(%env)) {
3383: next if ($key !~ /^\Q$prefix\E(.*)/);
3384: my ($setting) = $1;
3385: $returnhash{$setting} = $env{$key};
3386: }
3387: return %returnhash;
3388: }
3389:
3390: # get the data agin
3391: if (!$args->{'one_time'}) {
3392: $envhash{'course.'.$normalid.'.last_cache'}=time;
3393: }
3394:
3395: if ($chome ne 'no_host') {
3396: %returnhash=&dump('environment',$cdomain,$cnum);
3397: if (!exists($returnhash{'con_lost'})) {
3398: $returnhash{'home'}= $chome;
3399: $returnhash{'domain'} = $cdomain;
3400: $returnhash{'num'} = $cnum;
3401: if (!defined($returnhash{'type'})) {
3402: $returnhash{'type'} = 'Course';
3403: }
3404: while (my ($name,$value) = each %returnhash) {
3405: $envhash{'course.'.$normalid.'.'.$name}=$value;
3406: }
3407: $returnhash{'url'}=&clutter($returnhash{'url'});
3408: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3409: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3410: $envhash{'course.'.$normalid.'.home'}=$chome;
3411: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3412: $envhash{'course.'.$normalid.'.num'}=$cnum;
3413: }
3414: }
3415: if (!$args->{'one_time'}) {
3416: &appenv(\%envhash);
3417: }
3418: return %returnhash;
3419: }
3420:
3421: # -------------------------------------------------See if a user is privileged
3422:
3423: sub privileged {
3424: my ($username,$domain)=@_;
3425: my $rolesdump=&reply("dump:$domain:$username:roles",
3426: &homeserver($username,$domain));
3427: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3428: my $now=time;
3429: if ($rolesdump ne '') {
3430: foreach my $entry (split(/&/,$rolesdump)) {
3431: if ($entry!~/^rolesdef_/) {
3432: my ($area,$role)=split(/=/,$entry);
3433: $area=~s/\_\w\w$//;
3434: my ($trole,$tend,$tstart)=split(/_/,$role);
3435: if (($trole eq 'dc') || ($trole eq 'su')) {
3436: my $active=1;
3437: if ($tend) {
3438: if ($tend<$now) { $active=0; }
3439: }
3440: if ($tstart) {
3441: if ($tstart>$now) { $active=0; }
3442: }
3443: if ($active) { return 1; }
3444: }
3445: }
3446: }
3447: }
3448: return 0;
3449: }
3450:
3451: # -------------------------------------------------------- Get user privileges
3452:
3453: sub rolesinit {
3454: my ($domain,$username,$authhost)=@_;
3455: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3456: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
3457: my %allroles=();
3458: my %allgroups=();
3459: my $now=time;
3460: my %userroles = ('user.login.time' => $now);
3461: my $group_privs;
3462:
3463: if ($rolesdump ne '') {
3464: foreach my $entry (split(/&/,$rolesdump)) {
3465: if ($entry!~/^rolesdef_/) {
3466: my ($area,$role)=split(/=/,$entry);
3467: $area=~s/\_\w\w$//;
3468: my ($trole,$tend,$tstart,$group_privs);
3469: if ($role=~/^cr/) {
3470: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3471: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3472: ($tend,$tstart)=split('_',$trest);
3473: } else {
3474: $trole=$role;
3475: }
3476: } elsif ($role =~ m|^gr/|) {
3477: ($trole,$tend,$tstart) = split(/_/,$role);
3478: ($trole,$group_privs) = split(/\//,$trole);
3479: $group_privs = &unescape($group_privs);
3480: } else {
3481: ($trole,$tend,$tstart)=split(/_/,$role);
3482: }
3483: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3484: $username);
3485: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3486: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3487: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3488: if (($area ne '') && ($trole ne '')) {
3489: my $spec=$trole.'.'.$area;
3490: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3491: if ($trole =~ /^cr\//) {
3492: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3493: } elsif ($trole eq 'gr') {
3494: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3495: } else {
3496: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3497: }
3498: }
3499: }
3500: }
3501: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3502: $userroles{'user.adv'} = $adv;
3503: $userroles{'user.author'} = $author;
3504: $env{'user.adv'}=$adv;
3505: }
3506: return \%userroles;
3507: }
3508:
3509: sub set_arearole {
3510: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3511: # log the associated role with the area
3512: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3513: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3514: }
3515:
3516: sub custom_roleprivs {
3517: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3518: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3519: my $homsvr=homeserver($rauthor,$rdomain);
3520: if (&hostname($homsvr) ne '') {
3521: my ($rdummy,$roledef)=
3522: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3523: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3524: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3525: if (defined($syspriv)) {
3526: $$allroles{'cm./'}.=':'.$syspriv;
3527: $$allroles{$spec.'./'}.=':'.$syspriv;
3528: }
3529: if ($tdomain ne '') {
3530: if (defined($dompriv)) {
3531: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3532: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3533: }
3534: if (($trest ne '') && (defined($coursepriv))) {
3535: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3536: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3537: }
3538: }
3539: }
3540: }
3541: }
3542:
3543: sub group_roleprivs {
3544: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3545: my $access = 1;
3546: my $now = time;
3547: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3548: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3549: if ($access) {
3550: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3551: $$allgroups{$course}{$group} .=':'.$group_privs;
3552: }
3553: }
3554:
3555: sub standard_roleprivs {
3556: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3557: if (defined($pr{$trole.':s'})) {
3558: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3559: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3560: }
3561: if ($tdomain ne '') {
3562: if (defined($pr{$trole.':d'})) {
3563: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3564: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3565: }
3566: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3567: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3568: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3569: }
3570: }
3571: }
3572:
3573: sub set_userprivs {
3574: my ($userroles,$allroles,$allgroups) = @_;
3575: my $author=0;
3576: my $adv=0;
3577: my %grouproles = ();
3578: if (keys(%{$allgroups}) > 0) {
3579: foreach my $role (keys %{$allroles}) {
3580: my ($trole,$area,$sec,$extendedarea);
3581: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3582: $trole = $1;
3583: $area = $2;
3584: $sec = $3;
3585: $extendedarea = $area.$sec;
3586: if (exists($$allgroups{$area})) {
3587: foreach my $group (keys(%{$$allgroups{$area}})) {
3588: my $spec = $trole.'.'.$extendedarea;
3589: $grouproles{$spec.'.'.$area.'/'.$group} =
3590: $$allgroups{$area}{$group};
3591: }
3592: }
3593: }
3594: }
3595: }
3596: foreach my $group (keys(%grouproles)) {
3597: $$allroles{$group} = $grouproles{$group};
3598: }
3599: foreach my $role (keys(%{$allroles})) {
3600: my %thesepriv;
3601: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3602: foreach my $item (split(/:/,$$allroles{$role})) {
3603: if ($item ne '') {
3604: my ($privilege,$restrictions)=split(/&/,$item);
3605: if ($restrictions eq '') {
3606: $thesepriv{$privilege}='F';
3607: } elsif ($thesepriv{$privilege} ne 'F') {
3608: $thesepriv{$privilege}.=$restrictions;
3609: }
3610: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3611: }
3612: }
3613: my $thesestr='';
3614: foreach my $priv (keys(%thesepriv)) {
3615: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3616: }
3617: $userroles->{'user.priv.'.$role} = $thesestr;
3618: }
3619: return ($author,$adv);
3620: }
3621:
3622: # --------------------------------------------------------------- get interface
3623:
3624: sub get {
3625: my ($namespace,$storearr,$udomain,$uname)=@_;
3626: my $items='';
3627: foreach my $item (@$storearr) {
3628: $items.=&escape($item).'&';
3629: }
3630: $items=~s/\&$//;
3631: if (!$udomain) { $udomain=$env{'user.domain'}; }
3632: if (!$uname) { $uname=$env{'user.name'}; }
3633: my $uhome=&homeserver($uname,$udomain);
3634:
3635: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3636: my @pairs=split(/\&/,$rep);
3637: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3638: return @pairs;
3639: }
3640: my %returnhash=();
3641: my $i=0;
3642: foreach my $item (@$storearr) {
3643: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3644: $i++;
3645: }
3646: return %returnhash;
3647: }
3648:
3649: # --------------------------------------------------------------- del interface
3650:
3651: sub del {
3652: my ($namespace,$storearr,$udomain,$uname)=@_;
3653: my $items='';
3654: foreach my $item (@$storearr) {
3655: $items.=&escape($item).'&';
3656: }
3657: $items=~s/\&$//;
3658: if (!$udomain) { $udomain=$env{'user.domain'}; }
3659: if (!$uname) { $uname=$env{'user.name'}; }
3660: my $uhome=&homeserver($uname,$udomain);
3661:
3662: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3663: }
3664:
3665: # -------------------------------------------------------------- dump interface
3666:
3667: sub dump {
3668: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3669: if (!$udomain) { $udomain=$env{'user.domain'}; }
3670: if (!$uname) { $uname=$env{'user.name'}; }
3671: my $uhome=&homeserver($uname,$udomain);
3672: if ($regexp) {
3673: $regexp=&escape($regexp);
3674: } else {
3675: $regexp='.';
3676: }
3677: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3678: my @pairs=split(/\&/,$rep);
3679: my %returnhash=();
3680: foreach my $item (@pairs) {
3681: my ($key,$value)=split(/=/,$item,2);
3682: $key = &unescape($key);
3683: next if ($key =~ /^error: 2 /);
3684: $returnhash{$key}=&thaw_unescape($value);
3685: }
3686: return %returnhash;
3687: }
3688:
3689: # --------------------------------------------------------- dumpstore interface
3690:
3691: sub dumpstore {
3692: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3693: if (!$udomain) { $udomain=$env{'user.domain'}; }
3694: if (!$uname) { $uname=$env{'user.name'}; }
3695: my $uhome=&homeserver($uname,$udomain);
3696: if ($regexp) {
3697: $regexp=&escape($regexp);
3698: } else {
3699: $regexp='.';
3700: }
3701: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3702: my @pairs=split(/\&/,$rep);
3703: my %returnhash=();
3704: foreach my $item (@pairs) {
3705: my ($key,$value)=split(/=/,$item,2);
3706: next if ($key =~ /^error: 2 /);
3707: $returnhash{$key}=&thaw_unescape($value);
3708: }
3709: return %returnhash;
3710: }
3711:
3712: # -------------------------------------------------------------- keys interface
3713:
3714: sub getkeys {
3715: my ($namespace,$udomain,$uname)=@_;
3716: if (!$udomain) { $udomain=$env{'user.domain'}; }
3717: if (!$uname) { $uname=$env{'user.name'}; }
3718: my $uhome=&homeserver($uname,$udomain);
3719: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3720: my @keyarray=();
3721: foreach my $key (split(/\&/,$rep)) {
3722: next if ($key =~ /^error: 2 /);
3723: push(@keyarray,&unescape($key));
3724: }
3725: return @keyarray;
3726: }
3727:
3728: # --------------------------------------------------------------- currentdump
3729: sub currentdump {
3730: my ($courseid,$sdom,$sname)=@_;
3731: $courseid = $env{'request.course.id'} if (! defined($courseid));
3732: $sdom = $env{'user.domain'} if (! defined($sdom));
3733: $sname = $env{'user.name'} if (! defined($sname));
3734: my $uhome = &homeserver($sname,$sdom);
3735: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3736: return if ($rep =~ /^(error:|no_such_host)/);
3737: #
3738: my %returnhash=();
3739: #
3740: if ($rep eq "unknown_cmd") {
3741: # an old lond will not know currentdump
3742: # Do a dump and make it look like a currentdump
3743: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3744: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3745: my %hash = @tmp;
3746: @tmp=();
3747: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3748: } else {
3749: my @pairs=split(/\&/,$rep);
3750: foreach my $pair (@pairs) {
3751: my ($key,$value)=split(/=/,$pair,2);
3752: my ($symb,$param) = split(/:/,$key);
3753: $returnhash{&unescape($symb)}->{&unescape($param)} =
3754: &thaw_unescape($value);
3755: }
3756: }
3757: return %returnhash;
3758: }
3759:
3760: sub convert_dump_to_currentdump{
3761: my %hash = %{shift()};
3762: my %returnhash;
3763: # Code ripped from lond, essentially. The only difference
3764: # here is the unescaping done by lonnet::dump(). Conceivably
3765: # we might run in to problems with parameter names =~ /^v\./
3766: while (my ($key,$value) = each(%hash)) {
3767: my ($v,$symb,$param) = split(/:/,$key);
3768: $symb = &unescape($symb);
3769: $param = &unescape($param);
3770: next if ($v eq 'version' || $symb eq 'keys');
3771: next if (exists($returnhash{$symb}) &&
3772: exists($returnhash{$symb}->{$param}) &&
3773: $returnhash{$symb}->{'v.'.$param} > $v);
3774: $returnhash{$symb}->{$param}=$value;
3775: $returnhash{$symb}->{'v.'.$param}=$v;
3776: }
3777: #
3778: # Remove all of the keys in the hashes which keep track of
3779: # the version of the parameter.
3780: while (my ($symb,$param_hash) = each(%returnhash)) {
3781: # use a foreach because we are going to delete from the hash.
3782: foreach my $key (keys(%$param_hash)) {
3783: delete($param_hash->{$key}) if ($key =~ /^v\./);
3784: }
3785: }
3786: return \%returnhash;
3787: }
3788:
3789: # ------------------------------------------------------ critical inc interface
3790:
3791: sub cinc {
3792: return &inc(@_,'critical');
3793: }
3794:
3795: # --------------------------------------------------------------- inc interface
3796:
3797: sub inc {
3798: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3799: if (!$udomain) { $udomain=$env{'user.domain'}; }
3800: if (!$uname) { $uname=$env{'user.name'}; }
3801: my $uhome=&homeserver($uname,$udomain);
3802: my $items='';
3803: if (! ref($store)) {
3804: # got a single value, so use that instead
3805: $items = &escape($store).'=&';
3806: } elsif (ref($store) eq 'SCALAR') {
3807: $items = &escape($$store).'=&';
3808: } elsif (ref($store) eq 'ARRAY') {
3809: $items = join('=&',map {&escape($_);} @{$store});
3810: } elsif (ref($store) eq 'HASH') {
3811: while (my($key,$value) = each(%{$store})) {
3812: $items.= &escape($key).'='.&escape($value).'&';
3813: }
3814: }
3815: $items=~s/\&$//;
3816: if ($critical) {
3817: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3818: } else {
3819: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3820: }
3821: }
3822:
3823: # --------------------------------------------------------------- put interface
3824:
3825: sub put {
3826: my ($namespace,$storehash,$udomain,$uname)=@_;
3827: if (!$udomain) { $udomain=$env{'user.domain'}; }
3828: if (!$uname) { $uname=$env{'user.name'}; }
3829: my $uhome=&homeserver($uname,$udomain);
3830: my $items='';
3831: foreach my $item (keys(%$storehash)) {
3832: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3833: }
3834: $items=~s/\&$//;
3835: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3836: }
3837:
3838: # ------------------------------------------------------------ newput interface
3839:
3840: sub newput {
3841: my ($namespace,$storehash,$udomain,$uname)=@_;
3842: if (!$udomain) { $udomain=$env{'user.domain'}; }
3843: if (!$uname) { $uname=$env{'user.name'}; }
3844: my $uhome=&homeserver($uname,$udomain);
3845: my $items='';
3846: foreach my $key (keys(%$storehash)) {
3847: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3848: }
3849: $items=~s/\&$//;
3850: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3851: }
3852:
3853: # --------------------------------------------------------- putstore interface
3854:
3855: sub putstore {
3856: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3857: if (!$udomain) { $udomain=$env{'user.domain'}; }
3858: if (!$uname) { $uname=$env{'user.name'}; }
3859: my $uhome=&homeserver($uname,$udomain);
3860: my $items='';
3861: foreach my $key (keys(%$storehash)) {
3862: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
3863: }
3864: $items=~s/\&$//;
3865: my $esc_symb=&escape($symb);
3866: my $esc_v=&escape($version);
3867: my $reply =
3868: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
3869: $uhome);
3870: if ($reply eq 'unknown_cmd') {
3871: # gfall back to way things use to be done
3872: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
3873: $uname);
3874: }
3875: return $reply;
3876: }
3877:
3878: sub old_putstore {
3879: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3880: if (!$udomain) { $udomain=$env{'user.domain'}; }
3881: if (!$uname) { $uname=$env{'user.name'}; }
3882: my $uhome=&homeserver($uname,$udomain);
3883: my %newstorehash;
3884: foreach my $item (keys(%$storehash)) {
3885: my $key = $version.':'.&escape($symb).':'.$item;
3886: $newstorehash{$key} = $storehash->{$item};
3887: }
3888: my $items='';
3889: my %allitems = ();
3890: foreach my $item (keys(%newstorehash)) {
3891: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
3892: my $key = $1.':keys:'.$2;
3893: $allitems{$key} .= $3.':';
3894: }
3895: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
3896: }
3897: foreach my $item (keys(%allitems)) {
3898: $allitems{$item} =~ s/\:$//;
3899: $items.= $item.'='.$allitems{$item}.'&';
3900: }
3901: $items=~s/\&$//;
3902: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3903: }
3904:
3905: # ------------------------------------------------------ critical put interface
3906:
3907: sub cput {
3908: my ($namespace,$storehash,$udomain,$uname)=@_;
3909: if (!$udomain) { $udomain=$env{'user.domain'}; }
3910: if (!$uname) { $uname=$env{'user.name'}; }
3911: my $uhome=&homeserver($uname,$udomain);
3912: my $items='';
3913: foreach my $item (keys(%$storehash)) {
3914: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3915: }
3916: $items=~s/\&$//;
3917: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
3918: }
3919:
3920: # -------------------------------------------------------------- eget interface
3921:
3922: sub eget {
3923: my ($namespace,$storearr,$udomain,$uname)=@_;
3924: my $items='';
3925: foreach my $item (@$storearr) {
3926: $items.=&escape($item).'&';
3927: }
3928: $items=~s/\&$//;
3929: if (!$udomain) { $udomain=$env{'user.domain'}; }
3930: if (!$uname) { $uname=$env{'user.name'}; }
3931: my $uhome=&homeserver($uname,$udomain);
3932: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
3933: my @pairs=split(/\&/,$rep);
3934: my %returnhash=();
3935: my $i=0;
3936: foreach my $item (@$storearr) {
3937: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3938: $i++;
3939: }
3940: return %returnhash;
3941: }
3942:
3943: # ------------------------------------------------------------ tmpput interface
3944: sub tmpput {
3945: my ($storehash,$server,$context)=@_;
3946: my $items='';
3947: foreach my $item (keys(%$storehash)) {
3948: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3949: }
3950: $items=~s/\&$//;
3951: if (defined($context)) {
3952: $items .= ':'.&escape($context);
3953: }
3954: return &reply("tmpput:$items",$server);
3955: }
3956:
3957: # ------------------------------------------------------------ tmpget interface
3958: sub tmpget {
3959: my ($token,$server)=@_;
3960: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3961: my $rep=&reply("tmpget:$token",$server);
3962: my %returnhash;
3963: foreach my $item (split(/\&/,$rep)) {
3964: my ($key,$value)=split(/=/,$item);
3965: $returnhash{&unescape($key)}=&thaw_unescape($value);
3966: }
3967: return %returnhash;
3968: }
3969:
3970: # ------------------------------------------------------------ tmpget interface
3971: sub tmpdel {
3972: my ($token,$server)=@_;
3973: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3974: return &reply("tmpdel:$token",$server);
3975: }
3976:
3977: # -------------------------------------------------- portfolio access checking
3978:
3979: sub portfolio_access {
3980: my ($requrl) = @_;
3981: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
3982: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
3983: if ($result) {
3984: my %setters;
3985: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
3986: my ($startblock,$endblock) =
3987: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
3988: if ($startblock && $endblock) {
3989: return 'B';
3990: }
3991: } else {
3992: my ($startblock,$endblock) =
3993: &Apache::loncommon::blockcheck(\%setters,'port');
3994: if ($startblock && $endblock) {
3995: return 'B';
3996: }
3997: }
3998: }
3999: if ($result eq 'ok') {
4000: return 'F';
4001: } elsif ($result =~ /^[^:]+:guest_/) {
4002: return 'A';
4003: }
4004: return '';
4005: }
4006:
4007: sub get_portfolio_access {
4008: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4009:
4010: if (!ref($access_hash)) {
4011: my $current_perms = &get_portfile_permissions($udom,$unum);
4012: my %access_controls = &get_access_controls($current_perms,$group,
4013: $file_name);
4014: $access_hash = $access_controls{$file_name};
4015: }
4016:
4017: my ($public,$guest,@domains,@users,@courses,@groups);
4018: my $now = time;
4019: if (ref($access_hash) eq 'HASH') {
4020: foreach my $key (keys(%{$access_hash})) {
4021: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4022: if ($start > $now) {
4023: next;
4024: }
4025: if ($end && $end<$now) {
4026: next;
4027: }
4028: if ($scope eq 'public') {
4029: $public = $key;
4030: last;
4031: } elsif ($scope eq 'guest') {
4032: $guest = $key;
4033: } elsif ($scope eq 'domains') {
4034: push(@domains,$key);
4035: } elsif ($scope eq 'users') {
4036: push(@users,$key);
4037: } elsif ($scope eq 'course') {
4038: push(@courses,$key);
4039: } elsif ($scope eq 'group') {
4040: push(@groups,$key);
4041: }
4042: }
4043: if ($public) {
4044: return 'ok';
4045: }
4046: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4047: if ($guest) {
4048: return $guest;
4049: }
4050: } else {
4051: if (@domains > 0) {
4052: foreach my $domkey (@domains) {
4053: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4054: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4055: return 'ok';
4056: }
4057: }
4058: }
4059: }
4060: if (@users > 0) {
4061: foreach my $userkey (@users) {
4062: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4063: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4064: if (ref($item) eq 'HASH') {
4065: if (($item->{'uname'} eq $env{'user.name'}) &&
4066: ($item->{'udom'} eq $env{'user.domain'})) {
4067: return 'ok';
4068: }
4069: }
4070: }
4071: }
4072: }
4073: }
4074: my %roleshash;
4075: my @courses_and_groups = @courses;
4076: push(@courses_and_groups,@groups);
4077: if (@courses_and_groups > 0) {
4078: my (%allgroups,%allroles);
4079: my ($start,$end,$role,$sec,$group);
4080: foreach my $envkey (%env) {
4081: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4082: my $cid = $2.'_'.$3;
4083: if ($1 eq 'gr') {
4084: $group = $4;
4085: $allgroups{$cid}{$group} = $env{$envkey};
4086: } else {
4087: if ($4 eq '') {
4088: $sec = 'none';
4089: } else {
4090: $sec = $4;
4091: }
4092: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4093: }
4094: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4095: my $cid = $2.'_'.$3;
4096: if ($4 eq '') {
4097: $sec = 'none';
4098: } else {
4099: $sec = $4;
4100: }
4101: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4102: }
4103: }
4104: if (keys(%allroles) == 0) {
4105: return;
4106: }
4107: foreach my $key (@courses_and_groups) {
4108: my %content = %{$$access_hash{$key}};
4109: my $cnum = $content{'number'};
4110: my $cdom = $content{'domain'};
4111: my $cid = $cdom.'_'.$cnum;
4112: if (!exists($allroles{$cid})) {
4113: next;
4114: }
4115: foreach my $role_id (keys(%{$content{'roles'}})) {
4116: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4117: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4118: my @status = @{$content{'roles'}{$role_id}{'access'}};
4119: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4120: foreach my $role (keys(%{$allroles{$cid}})) {
4121: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4122: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4123: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4124: if (grep/^all$/,@sections) {
4125: return 'ok';
4126: } else {
4127: if (grep/^$sec$/,@sections) {
4128: return 'ok';
4129: }
4130: }
4131: }
4132: }
4133: if (keys(%{$allgroups{$cid}}) == 0) {
4134: if (grep/^none$/,@groups) {
4135: return 'ok';
4136: }
4137: } else {
4138: if (grep/^all$/,@groups) {
4139: return 'ok';
4140: }
4141: foreach my $group (keys(%{$allgroups{$cid}})) {
4142: if (grep/^$group$/,@groups) {
4143: return 'ok';
4144: }
4145: }
4146: }
4147: }
4148: }
4149: }
4150: }
4151: }
4152: if ($guest) {
4153: return $guest;
4154: }
4155: }
4156: }
4157: return;
4158: }
4159:
4160: sub course_group_datechecker {
4161: my ($dates,$now,$status) = @_;
4162: my ($start,$end) = split(/\./,$dates);
4163: if (!$start && !$end) {
4164: return 'ok';
4165: }
4166: if (grep/^active$/,@{$status}) {
4167: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4168: return 'ok';
4169: }
4170: }
4171: if (grep/^previous$/,@{$status}) {
4172: if ($end > $now ) {
4173: return 'ok';
4174: }
4175: }
4176: if (grep/^future$/,@{$status}) {
4177: if ($start > $now) {
4178: return 'ok';
4179: }
4180: }
4181: return;
4182: }
4183:
4184: sub parse_portfolio_url {
4185: my ($url) = @_;
4186:
4187: my ($type,$udom,$unum,$group,$file_name);
4188:
4189: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4190: $type = 1;
4191: $udom = $1;
4192: $unum = $2;
4193: $file_name = $3;
4194: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4195: $type = 2;
4196: $udom = $1;
4197: $unum = $2;
4198: $group = $3;
4199: $file_name = $3.'/'.$4;
4200: }
4201: if (wantarray) {
4202: return ($type,$udom,$unum,$file_name,$group);
4203: }
4204: return $type;
4205: }
4206:
4207: sub is_portfolio_url {
4208: my ($url) = @_;
4209: return scalar(&parse_portfolio_url($url));
4210: }
4211:
4212: sub is_portfolio_file {
4213: my ($file) = @_;
4214: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4215: return 1;
4216: }
4217: return;
4218: }
4219:
4220:
4221: # ---------------------------------------------- Custom access rule evaluation
4222:
4223: sub customaccess {
4224: my ($priv,$uri)=@_;
4225: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4226: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4227: $udom = &LONCAPA::clean_domain($udom);
4228: $ucrs = &LONCAPA::clean_username($ucrs);
4229: my $access=0;
4230: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4231: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4232: if ($type eq 'user') {
4233: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4234: my ($tdom,$tuname)=split(m{/},$scope);
4235: if ($tdom) {
4236: if ($tdom ne $env{'user.domain'}) { next; }
4237: }
4238: if ($tuname) {
4239: if ($tuname ne $env{'user.name'}) { next; }
4240: }
4241: $access=($effect eq 'allow');
4242: last;
4243: }
4244: } else {
4245: if ($role) {
4246: if ($role ne $urole) { next; }
4247: }
4248: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4249: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4250: if ($tdom) {
4251: if ($tdom ne $udom) { next; }
4252: }
4253: if ($tcrs) {
4254: if ($tcrs ne $ucrs) { next; }
4255: }
4256: if ($tsec) {
4257: if ($tsec ne $usec) { next; }
4258: }
4259: $access=($effect eq 'allow');
4260: last;
4261: }
4262: if ($realm eq '' && $role eq '') {
4263: $access=($effect eq 'allow');
4264: }
4265: }
4266: }
4267: return $access;
4268: }
4269:
4270: # ------------------------------------------------- Check for a user privilege
4271:
4272: sub allowed {
4273: my ($priv,$uri,$symb,$role)=@_;
4274: my $ver_orguri=$uri;
4275: $uri=&deversion($uri);
4276: my $orguri=$uri;
4277: $uri=&declutter($uri);
4278:
4279: if ($priv eq 'evb') {
4280: # Evade communication block restrictions for specified role in a course
4281: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4282: return $1;
4283: } else {
4284: return;
4285: }
4286: }
4287:
4288: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4289: # Free bre access to adm and meta resources
4290: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4291: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4292: && ($priv eq 'bre')) {
4293: return 'F';
4294: }
4295:
4296: # Free bre access to user's own portfolio contents
4297: my ($space,$domain,$name,@dir)=split('/',$uri);
4298: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4299: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4300: my %setters;
4301: my ($startblock,$endblock) =
4302: &Apache::loncommon::blockcheck(\%setters,'port');
4303: if ($startblock && $endblock) {
4304: return 'B';
4305: } else {
4306: return 'F';
4307: }
4308: }
4309:
4310: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4311: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4312: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4313: if (exists($env{'request.course.id'})) {
4314: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4315: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4316: if (($domain eq $cdom) && ($name eq $cnum)) {
4317: my $courseprivid=$env{'request.course.id'};
4318: $courseprivid=~s/\_/\//;
4319: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4320: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4321: return $1;
4322: } else {
4323: if ($env{'request.course.sec'}) {
4324: $courseprivid.='/'.$env{'request.course.sec'};
4325: }
4326: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4327: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4328: return $2;
4329: }
4330: }
4331: }
4332: }
4333: }
4334:
4335: # Free bre to public access
4336:
4337: if ($priv eq 'bre') {
4338: my $copyright=&metadata($uri,'copyright');
4339: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4340: return 'F';
4341: }
4342: if ($copyright eq 'priv') {
4343: $uri=~/([^\/]+)\/([^\/]+)\//;
4344: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4345: return '';
4346: }
4347: }
4348: if ($copyright eq 'domain') {
4349: $uri=~/([^\/]+)\/([^\/]+)\//;
4350: unless (($env{'user.domain'} eq $1) ||
4351: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4352: return '';
4353: }
4354: }
4355: if ($env{'request.role'}=~ /li\.\//) {
4356: # Library role, so allow browsing of resources in this domain.
4357: return 'F';
4358: }
4359: if ($copyright eq 'custom') {
4360: unless (&customaccess($priv,$uri)) { return ''; }
4361: }
4362: }
4363: # Domain coordinator is trying to create a course
4364: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4365: # uri is the requested domain in this case.
4366: # comparison to 'request.role.domain' shows if the user has selected
4367: # a role of dc for the domain in question.
4368: return 'F' if ($uri eq $env{'request.role.domain'});
4369: }
4370:
4371: my $thisallowed='';
4372: my $statecond=0;
4373: my $courseprivid='';
4374:
4375: # Course
4376:
4377: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4378: $thisallowed.=$1;
4379: }
4380:
4381: # Domain
4382:
4383: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4384: =~/\Q$priv\E\&([^\:]*)/) {
4385: $thisallowed.=$1;
4386: }
4387:
4388: # Course: uri itself is a course
4389: my $courseuri=$uri;
4390: $courseuri=~s/\_(\d)/\/$1/;
4391: $courseuri=~s/^([^\/])/\/$1/;
4392:
4393: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4394: =~/\Q$priv\E\&([^\:]*)/) {
4395: $thisallowed.=$1;
4396: }
4397:
4398: # URI is an uploaded document for this course, default permissions don't matter
4399: # not allowing 'edit' access (editupload) to uploaded course docs
4400: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4401: $thisallowed='';
4402: my ($match)=&is_on_map($uri);
4403: if ($match) {
4404: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4405: =~/\Q$priv\E\&([^\:]*)/) {
4406: $thisallowed.=$1;
4407: }
4408: } else {
4409: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4410: if ($refuri) {
4411: if ($refuri =~ m|^/adm/|) {
4412: $thisallowed='F';
4413: } else {
4414: $refuri=&declutter($refuri);
4415: my ($match) = &is_on_map($refuri);
4416: if ($match) {
4417: $thisallowed='F';
4418: }
4419: }
4420: }
4421: }
4422: }
4423:
4424: if ($priv eq 'bre'
4425: && $thisallowed ne 'F'
4426: && $thisallowed ne '2'
4427: && &is_portfolio_url($uri)) {
4428: $thisallowed = &portfolio_access($uri);
4429: }
4430:
4431: # Full access at system, domain or course-wide level? Exit.
4432:
4433: if ($thisallowed=~/F/) {
4434: return 'F';
4435: }
4436:
4437: # If this is generating or modifying users, exit with special codes
4438:
4439: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4440: if (($priv eq 'cca') || ($priv eq 'caa')) {
4441: my ($audom,$auname)=split('/',$uri);
4442: # no author name given, so this just checks on the general right to make a co-author in this domain
4443: unless ($auname) { return $thisallowed; }
4444: # an author name is given, so we are about to actually make a co-author for a certain account
4445: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4446: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4447: ($audom ne $env{'request.role.domain'}))) { return ''; }
4448: }
4449: return $thisallowed;
4450: }
4451: #
4452: # Gathered so far: system, domain and course wide privileges
4453: #
4454: # Course: See if uri or referer is an individual resource that is part of
4455: # the course
4456:
4457: if ($env{'request.course.id'}) {
4458:
4459: $courseprivid=$env{'request.course.id'};
4460: if ($env{'request.course.sec'}) {
4461: $courseprivid.='/'.$env{'request.course.sec'};
4462: }
4463: $courseprivid=~s/\_/\//;
4464: my $checkreferer=1;
4465: my ($match,$cond)=&is_on_map($uri);
4466: if ($match) {
4467: $statecond=$cond;
4468: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4469: =~/\Q$priv\E\&([^\:]*)/) {
4470: $thisallowed.=$1;
4471: $checkreferer=0;
4472: }
4473: }
4474:
4475: if ($checkreferer) {
4476: my $refuri=$env{'httpref.'.$orguri};
4477: unless ($refuri) {
4478: foreach my $key (keys(%env)) {
4479: if ($key=~/^httpref\..*\*/) {
4480: my $pattern=$key;
4481: $pattern=~s/^httpref\.\/res\///;
4482: $pattern=~s/\*/\[\^\/\]\+/g;
4483: $pattern=~s/\//\\\//g;
4484: if ($orguri=~/$pattern/) {
4485: $refuri=$env{$key};
4486: }
4487: }
4488: }
4489: }
4490:
4491: if ($refuri) {
4492: $refuri=&declutter($refuri);
4493: my ($match,$cond)=&is_on_map($refuri);
4494: if ($match) {
4495: my $refstatecond=$cond;
4496: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4497: =~/\Q$priv\E\&([^\:]*)/) {
4498: $thisallowed.=$1;
4499: $uri=$refuri;
4500: $statecond=$refstatecond;
4501: }
4502: }
4503: }
4504: }
4505: }
4506:
4507: #
4508: # Gathered now: all privileges that could apply, and condition number
4509: #
4510: #
4511: # Full or no access?
4512: #
4513:
4514: if ($thisallowed=~/F/) {
4515: return 'F';
4516: }
4517:
4518: unless ($thisallowed) {
4519: return '';
4520: }
4521:
4522: # Restrictions exist, deal with them
4523: #
4524: # C:according to course preferences
4525: # R:according to resource settings
4526: # L:unless locked
4527: # X:according to user session state
4528: #
4529:
4530: # Possibly locked functionality, check all courses
4531: # Locks might take effect only after 10 minutes cache expiration for other
4532: # courses, and 2 minutes for current course
4533:
4534: my $envkey;
4535: if ($thisallowed=~/L/) {
4536: foreach $envkey (keys %env) {
4537: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4538: my $courseid=$2;
4539: my $roleid=$1.'.'.$2;
4540: $courseid=~s/^\///;
4541: my $expiretime=600;
4542: if ($env{'request.role'} eq $roleid) {
4543: $expiretime=120;
4544: }
4545: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4546: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4547: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4548: &coursedescription($courseid,{'freshen_cache' => 1});
4549: }
4550: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4551: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4552: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4553: &log($env{'user.domain'},$env{'user.name'},
4554: $env{'user.home'},
4555: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4556: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4557: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4558: return '';
4559: }
4560: }
4561: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4562: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4563: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4564: &log($env{'user.domain'},$env{'user.name'},
4565: $env{'user.home'},
4566: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4567: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4568: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4569: return '';
4570: }
4571: }
4572: }
4573: }
4574: }
4575:
4576: #
4577: # Rest of the restrictions depend on selected course
4578: #
4579:
4580: unless ($env{'request.course.id'}) {
4581: if ($thisallowed eq 'A') {
4582: return 'A';
4583: } elsif ($thisallowed eq 'B') {
4584: return 'B';
4585: } else {
4586: return '1';
4587: }
4588: }
4589:
4590: #
4591: # Now user is definitely in a course
4592: #
4593:
4594:
4595: # Course preferences
4596:
4597: if ($thisallowed=~/C/) {
4598: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4599: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4600: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4601: =~/\Q$rolecode\E/) {
4602: if ($priv ne 'pch') {
4603: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4604: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4605: $env{'request.course.id'});
4606: }
4607: return '';
4608: }
4609:
4610: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4611: =~/\Q$unamedom\E/) {
4612: if ($priv ne 'pch') {
4613: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4614: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4615: $env{'request.course.id'});
4616: }
4617: return '';
4618: }
4619: }
4620:
4621: # Resource preferences
4622:
4623: if ($thisallowed=~/R/) {
4624: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4625: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4626: if ($priv ne 'pch') {
4627: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4628: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4629: }
4630: return '';
4631: }
4632: }
4633:
4634: # Restricted by state or randomout?
4635:
4636: if ($thisallowed=~/X/) {
4637: if ($env{'acc.randomout'}) {
4638: if (!$symb) { $symb=&symbread($uri,1); }
4639: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4640: return '';
4641: }
4642: }
4643: if (&condval($statecond)) {
4644: return '2';
4645: } else {
4646: return '';
4647: }
4648: }
4649:
4650: if ($thisallowed eq 'A') {
4651: return 'A';
4652: } elsif ($thisallowed eq 'B') {
4653: return 'B';
4654: }
4655: return 'F';
4656: }
4657:
4658: sub split_uri_for_cond {
4659: my $uri=&deversion(&declutter(shift));
4660: my @uriparts=split(/\//,$uri);
4661: my $filename=pop(@uriparts);
4662: my $pathname=join('/',@uriparts);
4663: return ($pathname,$filename);
4664: }
4665: # --------------------------------------------------- Is a resource on the map?
4666:
4667: sub is_on_map {
4668: my ($pathname,$filename) = &split_uri_for_cond(shift);
4669: #Trying to find the conditional for the file
4670: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4671: /\&\Q$filename\E\:([\d\|]+)\&/);
4672: if ($match) {
4673: return (1,$1);
4674: } else {
4675: return (0,0);
4676: }
4677: }
4678:
4679: # --------------------------------------------------------- Get symb from alias
4680:
4681: sub get_symb_from_alias {
4682: my $symb=shift;
4683: my ($map,$resid,$url)=&decode_symb($symb);
4684: # Already is a symb
4685: if ($url) { return $symb; }
4686: # Must be an alias
4687: my $aliassymb='';
4688: my %bighash;
4689: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4690: &GDBM_READER(),0640)) {
4691: my $rid=$bighash{'mapalias_'.$symb};
4692: if ($rid) {
4693: my ($mapid,$resid)=split(/\./,$rid);
4694: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4695: $resid,$bighash{'src_'.$rid});
4696: }
4697: untie %bighash;
4698: }
4699: return $aliassymb;
4700: }
4701:
4702: # ----------------------------------------------------------------- Define Role
4703:
4704: sub definerole {
4705: if (allowed('mcr','/')) {
4706: my ($rolename,$sysrole,$domrole,$courole)=@_;
4707: foreach my $role (split(':',$sysrole)) {
4708: my ($crole,$cqual)=split(/\&/,$role);
4709: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4710: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4711: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4712: return "refused:s:$crole&$cqual";
4713: }
4714: }
4715: }
4716: foreach my $role (split(':',$domrole)) {
4717: my ($crole,$cqual)=split(/\&/,$role);
4718: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4719: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4720: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4721: return "refused:d:$crole&$cqual";
4722: }
4723: }
4724: }
4725: foreach my $role (split(':',$courole)) {
4726: my ($crole,$cqual)=split(/\&/,$role);
4727: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4728: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4729: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4730: return "refused:c:$crole&$cqual";
4731: }
4732: }
4733: }
4734: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4735: "$env{'user.domain'}:$env{'user.name'}:".
4736: "rolesdef_$rolename=".
4737: escape($sysrole.'_'.$domrole.'_'.$courole);
4738: return reply($command,$env{'user.home'});
4739: } else {
4740: return 'refused';
4741: }
4742: }
4743:
4744: # ---------------- Make a metadata query against the network of library servers
4745:
4746: sub metadata_query {
4747: my ($query,$custom,$customshow,$server_array)=@_;
4748: my %rhash;
4749: my %libserv = &all_library();
4750: my @server_list = (defined($server_array) ? @$server_array
4751: : keys(%libserv) );
4752: for my $server (@server_list) {
4753: unless ($custom or $customshow) {
4754: my $reply=&reply("querysend:".&escape($query),$server);
4755: $rhash{$server}=$reply;
4756: }
4757: else {
4758: my $reply=&reply("querysend:".&escape($query).':'.
4759: &escape($custom).':'.&escape($customshow),
4760: $server);
4761: $rhash{$server}=$reply;
4762: }
4763: }
4764: return \%rhash;
4765: }
4766:
4767: # ----------------------------------------- Send log queries and wait for reply
4768:
4769: sub log_query {
4770: my ($uname,$udom,$query,%filters)=@_;
4771: my $uhome=&homeserver($uname,$udom);
4772: if ($uhome eq 'no_host') { return 'error: no_host'; }
4773: my $uhost=&hostname($uhome);
4774: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4775: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4776: $uhome);
4777: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4778: return get_query_reply($queryid);
4779: }
4780:
4781: # -------------------------- Update MySQL table for portfolio file
4782:
4783: sub update_portfolio_table {
4784: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4785: my $homeserver = &homeserver($uname,$udom);
4786: my $queryid=
4787: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4788: ':'.&escape($file_name).':'.$action,$homeserver);
4789: my $reply = &get_query_reply($queryid);
4790: return $reply;
4791: }
4792:
4793: # -------------------------- Update MySQL allusers table
4794:
4795: sub update_allusers_table {
4796: my ($uname,$udom,$names) = @_;
4797: my $homeserver = &homeserver($uname,$udom);
4798: my $queryid=
4799: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
4800: 'lastname='.&escape($names->{'lastname'}).'%%'.
4801: 'firstname='.&escape($names->{'firstname'}).'%%'.
4802: 'middlename='.&escape($names->{'middlename'}).'%%'.
4803: 'generation='.&escape($names->{'generation'}).'%%'.
4804: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
4805: 'id='.&escape($names->{'id'}),$homeserver);
4806: my $reply = &get_query_reply($queryid);
4807: return $reply;
4808: }
4809:
4810: # ------- Request retrieval of institutional classlists for course(s)
4811:
4812: sub fetch_enrollment_query {
4813: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4814: my $homeserver;
4815: my $maxtries = 1;
4816: if ($context eq 'automated') {
4817: $homeserver = $perlvar{'lonHostID'};
4818: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4819: } else {
4820: $homeserver = &homeserver($cnum,$dom);
4821: }
4822: my $host=&hostname($homeserver);
4823: my $cmd = '';
4824: foreach my $affiliate (keys %{$affiliatesref}) {
4825: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4826: }
4827: $cmd =~ s/%%$//;
4828: $cmd = &escape($cmd);
4829: my $query = 'fetchenrollment';
4830: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4831: unless ($queryid=~/^\Q$host\E\_/) {
4832: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4833: return 'error: '.$queryid;
4834: }
4835: my $reply = &get_query_reply($queryid);
4836: my $tries = 1;
4837: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4838: $reply = &get_query_reply($queryid);
4839: $tries ++;
4840: }
4841: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4842: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4843: } else {
4844: my @responses = split(/:/,$reply);
4845: if ($homeserver eq $perlvar{'lonHostID'}) {
4846: foreach my $line (@responses) {
4847: my ($key,$value) = split(/=/,$line,2);
4848: $$replyref{$key} = $value;
4849: }
4850: } else {
4851: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4852: foreach my $line (@responses) {
4853: my ($key,$value) = split(/=/,$line);
4854: $$replyref{$key} = $value;
4855: if ($value > 0) {
4856: foreach my $item (@{$$affiliatesref{$key}}) {
4857: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4858: my $destname = $pathname.'/'.$filename;
4859: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
4860: if ($xml_classlist =~ /^error/) {
4861: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
4862: } else {
4863: if ( open(FILE,">$destname") ) {
4864: print FILE &unescape($xml_classlist);
4865: close(FILE);
4866: } else {
4867: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
4868: }
4869: }
4870: }
4871: }
4872: }
4873: }
4874: return 'ok';
4875: }
4876: return 'error';
4877: }
4878:
4879: sub get_query_reply {
4880: my $queryid=shift;
4881: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
4882: my $reply='';
4883: for (1..100) {
4884: sleep 2;
4885: if (-e $replyfile.'.end') {
4886: if (open(my $fh,$replyfile)) {
4887: $reply = join('',<$fh>);
4888: close($fh);
4889: } else { return 'error: reply_file_error'; }
4890: return &unescape($reply);
4891: }
4892: }
4893: return 'timeout:'.$queryid;
4894: }
4895:
4896: sub courselog_query {
4897: #
4898: # possible filters:
4899: # url: url or symb
4900: # username
4901: # domain
4902: # action: view, submit, grade
4903: # start: timestamp
4904: # end: timestamp
4905: #
4906: my (%filters)=@_;
4907: unless ($env{'request.course.id'}) { return 'no_course'; }
4908: if ($filters{'url'}) {
4909: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
4910: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
4911: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
4912: }
4913: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
4914: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4915: return &log_query($cname,$cdom,'courselog',%filters);
4916: }
4917:
4918: sub userlog_query {
4919: #
4920: # possible filters:
4921: # action: log check role
4922: # start: timestamp
4923: # end: timestamp
4924: #
4925: my ($uname,$udom,%filters)=@_;
4926: return &log_query($uname,$udom,'userlog',%filters);
4927: }
4928:
4929: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
4930:
4931: sub auto_run {
4932: my ($cnum,$cdom) = @_;
4933: my $response = 0;
4934: my $settings;
4935: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
4936: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
4937: $settings = $domconfig{'autoenroll'};
4938: if ($settings->{'run'} eq '1') {
4939: $response = 1;
4940: }
4941: } else {
4942: my $homeserver;
4943: if (&is_course($cdom,$cnum)) {
4944: $homeserver = &homeserver($cnum,$cdom);
4945: } else {
4946: $homeserver = &domain($cdom,'primary');
4947: }
4948: if ($homeserver ne 'no_host') {
4949: $response = &reply('autorun:'.$cdom,$homeserver);
4950: }
4951: }
4952: return $response;
4953: }
4954:
4955: sub auto_get_sections {
4956: my ($cnum,$cdom,$inst_coursecode) = @_;
4957: my $homeserver = &homeserver($cnum,$cdom);
4958: my @secs = ();
4959: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
4960: unless ($response eq 'refused') {
4961: @secs = split(/:/,$response);
4962: }
4963: return @secs;
4964: }
4965:
4966: sub auto_new_course {
4967: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
4968: my $homeserver = &homeserver($cnum,$cdom);
4969: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
4970: return $response;
4971: }
4972:
4973: sub auto_validate_courseID {
4974: my ($cnum,$cdom,$inst_course_id) = @_;
4975: my $homeserver = &homeserver($cnum,$cdom);
4976: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
4977: return $response;
4978: }
4979:
4980: sub auto_create_password {
4981: my ($cnum,$cdom,$authparam,$udom) = @_;
4982: my ($homeserver,$response);
4983: my $create_passwd = 0;
4984: my $authchk = '';
4985: if ($udom =~ /^$match_domain$/) {
4986: $homeserver = &domain($udom,'primary');
4987: }
4988: if ($homeserver eq '') {
4989: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
4990: $homeserver = &homeserver($cnum,$cdom);
4991: }
4992: }
4993: if ($homeserver eq '') {
4994: $authchk = 'nodomain';
4995: } else {
4996: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
4997: if ($response eq 'refused') {
4998: $authchk = 'refused';
4999: } else {
5000: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5001: }
5002: }
5003: return ($authparam,$create_passwd,$authchk);
5004: }
5005:
5006: sub auto_photo_permission {
5007: my ($cnum,$cdom,$students) = @_;
5008: my $homeserver = &homeserver($cnum,$cdom);
5009: my ($outcome,$perm_reqd,$conditions) =
5010: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5011: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5012: return (undef,undef);
5013: }
5014: return ($outcome,$perm_reqd,$conditions);
5015: }
5016:
5017: sub auto_checkphotos {
5018: my ($uname,$udom,$pid) = @_;
5019: my $homeserver = &homeserver($uname,$udom);
5020: my ($result,$resulttype);
5021: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5022: &escape($uname).':'.&escape($pid),
5023: $homeserver));
5024: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5025: return (undef,undef);
5026: }
5027: if ($outcome) {
5028: ($result,$resulttype) = split(/:/,$outcome);
5029: }
5030: return ($result,$resulttype);
5031: }
5032:
5033: sub auto_photochoice {
5034: my ($cnum,$cdom) = @_;
5035: my $homeserver = &homeserver($cnum,$cdom);
5036: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5037: &escape($cdom),
5038: $homeserver)));
5039: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5040: return (undef,undef);
5041: }
5042: return ($update,$comment);
5043: }
5044:
5045: sub auto_photoupdate {
5046: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5047: my $homeserver = &homeserver($cnum,$dom);
5048: my $host=&hostname($homeserver);
5049: my $cmd = '';
5050: my $maxtries = 1;
5051: foreach my $affiliate (keys(%{$affiliatesref})) {
5052: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5053: }
5054: $cmd =~ s/%%$//;
5055: $cmd = &escape($cmd);
5056: my $query = 'institutionalphotos';
5057: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5058: unless ($queryid=~/^\Q$host\E\_/) {
5059: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5060: return 'error: '.$queryid;
5061: }
5062: my $reply = &get_query_reply($queryid);
5063: my $tries = 1;
5064: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5065: $reply = &get_query_reply($queryid);
5066: $tries ++;
5067: }
5068: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5069: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5070: } else {
5071: my @responses = split(/:/,$reply);
5072: my $outcome = shift(@responses);
5073: foreach my $item (@responses) {
5074: my ($key,$value) = split(/=/,$item);
5075: $$photo{$key} = $value;
5076: }
5077: return $outcome;
5078: }
5079: return 'error';
5080: }
5081:
5082: sub auto_instcode_format {
5083: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5084: $cat_order) = @_;
5085: my $courses = '';
5086: my @homeservers;
5087: if ($caller eq 'global') {
5088: my %servers = &get_servers($codedom,'library');
5089: foreach my $tryserver (keys(%servers)) {
5090: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5091: push(@homeservers,$tryserver);
5092: }
5093: }
5094: } else {
5095: push(@homeservers,&homeserver($caller,$codedom));
5096: }
5097: foreach my $code (keys(%{$instcodes})) {
5098: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5099: }
5100: chop($courses);
5101: my $ok_response = 0;
5102: my $response;
5103: while (@homeservers > 0 && $ok_response == 0) {
5104: my $server = shift(@homeservers);
5105: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5106: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5107: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5108: split(/:/,$response);
5109: %{$codes} = (%{$codes},&str2hash($codes_str));
5110: push(@{$codetitles},&str2array($codetitles_str));
5111: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5112: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5113: $ok_response = 1;
5114: }
5115: }
5116: if ($ok_response) {
5117: return 'ok';
5118: } else {
5119: return $response;
5120: }
5121: }
5122:
5123: sub auto_instcode_defaults {
5124: my ($domain,$returnhash,$code_order) = @_;
5125: my @homeservers;
5126:
5127: my %servers = &get_servers($domain,'library');
5128: foreach my $tryserver (keys(%servers)) {
5129: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5130: push(@homeservers,$tryserver);
5131: }
5132: }
5133:
5134: my $response;
5135: foreach my $server (@homeservers) {
5136: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5137: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5138:
5139: foreach my $pair (split(/\&/,$response)) {
5140: my ($name,$value)=split(/\=/,$pair);
5141: if ($name eq 'code_order') {
5142: @{$code_order} = split(/\&/,&unescape($value));
5143: } else {
5144: $returnhash->{&unescape($name)}=&unescape($value);
5145: }
5146: }
5147: return 'ok';
5148: }
5149:
5150: return $response;
5151: }
5152:
5153: sub auto_validate_class_sec {
5154: my ($cdom,$cnum,$owners,$inst_class) = @_;
5155: my $homeserver = &homeserver($cnum,$cdom);
5156: my $ownerlist;
5157: if (ref($owners) eq 'ARRAY') {
5158: $ownerlist = join(',',@{$owners});
5159: } else {
5160: $ownerlist = $owners;
5161: }
5162: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5163: &escape($ownerlist).':'.$cdom,$homeserver);
5164: return $response;
5165: }
5166:
5167: # ------------------------------------------------------- Course Group routines
5168:
5169: sub get_coursegroups {
5170: my ($cdom,$cnum,$group,$namespace) = @_;
5171: return(&dump($namespace,$cdom,$cnum,$group));
5172: }
5173:
5174: sub modify_coursegroup {
5175: my ($cdom,$cnum,$groupsettings) = @_;
5176: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5177: }
5178:
5179: sub toggle_coursegroup_status {
5180: my ($cdom,$cnum,$group,$action) = @_;
5181: my ($from_namespace,$to_namespace);
5182: if ($action eq 'delete') {
5183: $from_namespace = 'coursegroups';
5184: $to_namespace = 'deleted_groups';
5185: } else {
5186: $from_namespace = 'deleted_groups';
5187: $to_namespace = 'coursegroups';
5188: }
5189: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5190: if (my $tmp = &error(%curr_group)) {
5191: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5192: return ('read error',$tmp);
5193: } else {
5194: my %savedsettings = %curr_group;
5195: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5196: my $deloutcome;
5197: if ($result eq 'ok') {
5198: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5199: } else {
5200: return ('write error',$result);
5201: }
5202: if ($deloutcome eq 'ok') {
5203: return 'ok';
5204: } else {
5205: return ('delete error',$deloutcome);
5206: }
5207: }
5208: }
5209:
5210: sub modify_group_roles {
5211: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;
5212: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5213: my $role = 'gr/'.&escape($userprivs);
5214: my ($uname,$udom) = split(/:/,$user);
5215: my $result = &assignrole($udom,$uname,$url,$role,$end,$start);
5216: if ($result eq 'ok') {
5217: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5218: }
5219: return $result;
5220: }
5221:
5222: sub modify_coursegroup_membership {
5223: my ($cdom,$cnum,$membership) = @_;
5224: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5225: return $result;
5226: }
5227:
5228: sub get_active_groups {
5229: my ($udom,$uname,$cdom,$cnum) = @_;
5230: my $now = time;
5231: my %groups = ();
5232: foreach my $key (keys(%env)) {
5233: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5234: my ($start,$end) = split(/\./,$env{$key});
5235: if (($end!=0) && ($end<$now)) { next; }
5236: if (($start!=0) && ($start>$now)) { next; }
5237: if ($1 eq $cdom && $2 eq $cnum) {
5238: $groups{$3} = $env{$key} ;
5239: }
5240: }
5241: }
5242: return %groups;
5243: }
5244:
5245: sub get_group_membership {
5246: my ($cdom,$cnum,$group) = @_;
5247: return(&dump('groupmembership',$cdom,$cnum,$group));
5248: }
5249:
5250: sub get_users_groups {
5251: my ($udom,$uname,$courseid) = @_;
5252: my @usersgroups;
5253: my $cachetime=1800;
5254:
5255: my $hashid="$udom:$uname:$courseid";
5256: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5257: if (defined($cached)) {
5258: @usersgroups = split(/:/,$grouplist);
5259: } else {
5260: $grouplist = '';
5261: my $courseurl = &courseid_to_courseurl($courseid);
5262: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5263: my $access_end = $env{'course.'.$courseid.
5264: '.default_enrollment_end_date'};
5265: my $now = time;
5266: foreach my $key (keys(%roleshash)) {
5267: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5268: my $group = $1;
5269: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5270: my $start = $2;
5271: my $end = $1;
5272: if ($start == -1) { next; } # deleted from group
5273: if (($start!=0) && ($start>$now)) { next; }
5274: if (($end!=0) && ($end<$now)) {
5275: if ($access_end && $access_end < $now) {
5276: if ($access_end - $end < 86400) {
5277: push(@usersgroups,$group);
5278: }
5279: }
5280: next;
5281: }
5282: push(@usersgroups,$group);
5283: }
5284: }
5285: }
5286: @usersgroups = &sort_course_groups($courseid,@usersgroups);
5287: $grouplist = join(':',@usersgroups);
5288: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
5289: }
5290: return @usersgroups;
5291: }
5292:
5293: sub devalidate_getgroups_cache {
5294: my ($udom,$uname,$cdom,$cnum)=@_;
5295: my $courseid = $cdom.'_'.$cnum;
5296:
5297: my $hashid="$udom:$uname:$courseid";
5298: &devalidate_cache_new('getgroups',$hashid);
5299: }
5300:
5301: # ------------------------------------------------------------------ Plain Text
5302:
5303: sub plaintext {
5304: my ($short,$type,$cid) = @_;
5305: if ($short =~ /^cr/) {
5306: return (split('/',$short))[-1];
5307: }
5308: if (!defined($cid)) {
5309: $cid = $env{'request.course.id'};
5310: }
5311: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
5312: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
5313: '.plaintext'});
5314: }
5315: my %rolenames = (
5316: Course => 'std',
5317: Group => 'alt1',
5318: );
5319: if (defined($type) &&
5320: defined($rolenames{$type}) &&
5321: defined($prp{$short}{$rolenames{$type}})) {
5322: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
5323: } else {
5324: return &Apache::lonlocal::mt($prp{$short}{'std'});
5325: }
5326: }
5327:
5328: # ----------------------------------------------------------------- Assign Role
5329:
5330: sub assignrole {
5331: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll)=@_;
5332: my $mrole;
5333: if ($role =~ /^cr\//) {
5334: my $cwosec=$url;
5335: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5336: unless (&allowed('ccr',$cwosec)) {
5337: &logthis('Refused custom assignrole: '.
5338: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5339: $env{'user.name'}.' at '.$env{'user.domain'});
5340: return 'refused';
5341: }
5342: $mrole='cr';
5343: } elsif ($role =~ /^gr\//) {
5344: my $cwogrp=$url;
5345: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5346: unless (&allowed('mdg',$cwogrp)) {
5347: &logthis('Refused group assignrole: '.
5348: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5349: $env{'user.name'}.' at '.$env{'user.domain'});
5350: return 'refused';
5351: }
5352: $mrole='gr';
5353: } else {
5354: my $cwosec=$url;
5355: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5356: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
5357: my $refused;
5358: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
5359: if (!(&allowed('c'.$role,$url))) {
5360: $refused = 1;
5361: }
5362: } else {
5363: $refused = 1;
5364: }
5365: if ($refused) {
5366: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5367: $refused = '';
5368: } else {
5369: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
5370: ' '.$role.' '.$end.' '.$start.' by '.
5371: $env{'user.name'}.' at '.$env{'user.domain'});
5372: return 'refused';
5373: }
5374: }
5375: }
5376: $mrole=$role;
5377: }
5378: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5379: "$udom:$uname:$url".'_'."$mrole=$role";
5380: if ($end) { $command.='_'.$end; }
5381: if ($start) {
5382: if ($end) {
5383: $command.='_'.$start;
5384: } else {
5385: $command.='_0_'.$start;
5386: }
5387: }
5388: my $origstart = $start;
5389: my $origend = $end;
5390: # actually delete
5391: if ($deleteflag) {
5392: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5393: # modify command to delete the role
5394: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5395: "$udom:$uname:$url".'_'."$mrole";
5396: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5397: # set start and finish to negative values for userrolelog
5398: $start=-1;
5399: $end=-1;
5400: }
5401: }
5402: # send command
5403: my $answer=&reply($command,&homeserver($uname,$udom));
5404: # log new user role if status is ok
5405: if ($answer eq 'ok') {
5406: &userrolelog($role,$uname,$udom,$url,$start,$end);
5407: # for course roles, perform group memberships changes triggered by role change.
5408: unless ($role =~ /^gr/) {
5409: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5410: $origstart);
5411: }
5412: }
5413: return $answer;
5414: }
5415:
5416: # -------------------------------------------------- Modify user authentication
5417: # Overrides without validation
5418:
5419: sub modifyuserauth {
5420: my ($udom,$uname,$umode,$upass)=@_;
5421: my $uhome=&homeserver($uname,$udom);
5422: unless (&allowed('mau',$udom)) { return 'refused'; }
5423: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5424: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5425: ' in domain '.$env{'request.role.domain'});
5426: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5427: &escape($upass),$uhome);
5428: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5429: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5430: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5431: &log($udom,,$uname,$uhome,
5432: 'Authentication changed by '.$env{'user.domain'}.', '.
5433: $env{'user.name'}.', '.$umode.
5434: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5435: unless ($reply eq 'ok') {
5436: &logthis('Authentication mode error: '.$reply);
5437: return 'error: '.$reply;
5438: }
5439: return 'ok';
5440: }
5441:
5442: # --------------------------------------------------------------- Modify a user
5443:
5444: sub modifyuser {
5445: my ($udom, $uname, $uid,
5446: $umode, $upass, $first,
5447: $middle, $last, $gene,
5448: $forceid, $desiredhome, $email)=@_;
5449: $udom= &LONCAPA::clean_domain($udom);
5450: $uname=&LONCAPA::clean_username($uname);
5451: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5452: $umode.', '.$first.', '.$middle.', '.
5453: $last.', '.$gene.'(forceid: '.$forceid.')'.
5454: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5455: ' desiredhome not specified').
5456: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5457: ' in domain '.$env{'request.role.domain'});
5458: my $uhome=&homeserver($uname,$udom,'true');
5459: # ----------------------------------------------------------------- Create User
5460: if (($uhome eq 'no_host') &&
5461: (($umode && $upass) || ($umode eq 'localauth'))) {
5462: my $unhome='';
5463: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5464: $unhome = $desiredhome;
5465: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5466: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5467: } else { # load balancing routine for determining $unhome
5468: my $loadm=10000000;
5469: my %servers = &get_servers($udom,'library');
5470: foreach my $tryserver (keys(%servers)) {
5471: my $answer=reply('load',$tryserver);
5472: if (($answer=~/\d+/) && ($answer<$loadm)) {
5473: $loadm=$answer;
5474: $unhome=$tryserver;
5475: }
5476: }
5477: }
5478: if (($unhome eq '') || ($unhome eq 'no_host')) {
5479: return 'error: unable to find a home server for '.$uname.
5480: ' in domain '.$udom;
5481: }
5482: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
5483: &escape($upass),$unhome);
5484: unless ($reply eq 'ok') {
5485: return 'error: '.$reply;
5486: }
5487: $uhome=&homeserver($uname,$udom,'true');
5488: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
5489: return 'error: unable verify users home machine.';
5490: }
5491: } # End of creation of new user
5492: # ---------------------------------------------------------------------- Add ID
5493: if ($uid) {
5494: $uid=~tr/A-Z/a-z/;
5495: my %uidhash=&idrget($udom,$uname);
5496: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
5497: && (!$forceid)) {
5498: unless ($uid eq $uidhash{$uname}) {
5499: return 'error: user id "'.$uid.'" does not match '.
5500: 'current user id "'.$uidhash{$uname}.'".';
5501: }
5502: } else {
5503: &idput($udom,($uname => $uid));
5504: }
5505: }
5506: # -------------------------------------------------------------- Add names, etc
5507: my @tmp=&get('environment',
5508: ['firstname','middlename','lastname','generation','id',
5509: 'permanentemail'],
5510: $udom,$uname);
5511: my %names;
5512: if ($tmp[0] =~ m/^error:.*/) {
5513: %names=();
5514: } else {
5515: %names = @tmp;
5516: }
5517: #
5518: # Make sure to not trash student environment if instructor does not bother
5519: # to supply name and email information
5520: #
5521: if ($first) { $names{'firstname'} = $first; }
5522: if (defined($middle)) { $names{'middlename'} = $middle; }
5523: if ($last) { $names{'lastname'} = $last; }
5524: if (defined($gene)) { $names{'generation'} = $gene; }
5525: if ($email) {
5526: $email=~s/[^\w\@\.\-\,]//gs;
5527: if ($email=~/\@/) { $names{'notification'} = $email;
5528: $names{'critnotification'} = $email;
5529: $names{'permanentemail'} = $email; }
5530: }
5531: if ($uid) { $names{'id'} = $uid; }
5532: my $reply = &put('environment', \%names, $udom,$uname);
5533: if ($reply ne 'ok') { return 'error: '.$reply; }
5534: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
5535: &devalidate_cache_new('namescache',$uname.':'.$udom);
5536: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5537: $umode.', '.$first.', '.$middle.', '.
5538: $last.', '.$gene.' by '.
5539: $env{'user.name'}.' at '.$env{'user.domain'});
5540: return 'ok';
5541: }
5542:
5543: # -------------------------------------------------------------- Modify student
5544:
5545: sub modifystudent {
5546: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5547: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
5548: if (!$cid) {
5549: unless ($cid=$env{'request.course.id'}) {
5550: return 'not_in_class';
5551: }
5552: }
5553: # --------------------------------------------------------------- Make the user
5554: my $reply=&modifyuser
5555: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5556: $desiredhome,$email);
5557: unless ($reply eq 'ok') { return $reply; }
5558: # This will cause &modify_student_enrollment to get the uid from the
5559: # students environment
5560: $uid = undef if (!$forceid);
5561: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5562: $gene,$usec,$end,$start,$type,$locktype,$cid);
5563: return $reply;
5564: }
5565:
5566: sub modify_student_enrollment {
5567: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll) = @_;
5568: my ($cdom,$cnum,$chome);
5569: if (!$cid) {
5570: unless ($cid=$env{'request.course.id'}) {
5571: return 'not_in_class';
5572: }
5573: $cdom=$env{'course.'.$cid.'.domain'};
5574: $cnum=$env{'course.'.$cid.'.num'};
5575: } else {
5576: ($cdom,$cnum)=split(/_/,$cid);
5577: }
5578: $chome=$env{'course.'.$cid.'.home'};
5579: if (!$chome) {
5580: $chome=&homeserver($cnum,$cdom);
5581: }
5582: if (!$chome) { return 'unknown_course'; }
5583: # Make sure the user exists
5584: my $uhome=&homeserver($uname,$udom);
5585: if (($uhome eq '') || ($uhome eq 'no_host')) {
5586: return 'error: no such user';
5587: }
5588: # Get student data if we were not given enough information
5589: if (!defined($first) || $first eq '' ||
5590: !defined($last) || $last eq '' ||
5591: !defined($uid) || $uid eq '' ||
5592: !defined($middle) || $middle eq '' ||
5593: !defined($gene) || $gene eq '') {
5594: # They did not supply us with enough data to enroll the student, so
5595: # we need to pick up more information.
5596: my %tmp = &get('environment',
5597: ['firstname','middlename','lastname', 'generation','id']
5598: ,$udom,$uname);
5599:
5600: #foreach my $key (keys(%tmp)) {
5601: # &logthis("key $key = ".$tmp{$key});
5602: #}
5603: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5604: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5605: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5606: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5607: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5608: }
5609: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5610: my $reply=cput('classlist',
5611: {"$uname:$udom" =>
5612: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5613: $cdom,$cnum);
5614: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5615: return 'error: '.$reply;
5616: } else {
5617: &devalidate_getsection_cache($udom,$uname,$cid);
5618: }
5619: # Add student role to user
5620: my $uurl='/'.$cid;
5621: $uurl=~s/\_/\//g;
5622: if ($usec) {
5623: $uurl.='/'.$usec;
5624: }
5625: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll);
5626: }
5627:
5628: sub format_name {
5629: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5630: my $name;
5631: if ($first ne 'lastname') {
5632: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5633: } else {
5634: if ($lastname=~/\S/) {
5635: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5636: $name=~s/\s+,/,/;
5637: } else {
5638: $name.= $firstname.' '.$middlename.' '.$generation;
5639: }
5640: }
5641: $name=~s/^\s+//;
5642: $name=~s/\s+$//;
5643: $name=~s/\s+/ /g;
5644: return $name;
5645: }
5646:
5647: # ------------------------------------------------- Write to course preferences
5648:
5649: sub writecoursepref {
5650: my ($courseid,%prefs)=@_;
5651: $courseid=~s/^\///;
5652: $courseid=~s/\_/\//g;
5653: my ($cdomain,$cnum)=split(/\//,$courseid);
5654: my $chome=homeserver($cnum,$cdomain);
5655: if (($chome eq '') || ($chome eq 'no_host')) {
5656: return 'error: no such course';
5657: }
5658: my $cstring='';
5659: foreach my $pref (keys(%prefs)) {
5660: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5661: }
5662: $cstring=~s/\&$//;
5663: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5664: }
5665:
5666: # ---------------------------------------------------------- Make/modify course
5667:
5668: sub createcourse {
5669: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5670: $course_owner,$crstype)=@_;
5671: $url=&declutter($url);
5672: my $cid='';
5673: unless (&allowed('ccc',$udom)) {
5674: return 'refused';
5675: }
5676: # ------------------------------------------------------------------- Create ID
5677: my $uname=int(1+rand(9)).
5678: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5679: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5680: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5681: # ----------------------------------------------- Make sure that does not exist
5682: my $uhome=&homeserver($uname,$udom,'true');
5683: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5684: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5685: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5686: $uhome=&homeserver($uname,$udom,'true');
5687: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5688: return 'error: unable to generate unique course-ID';
5689: }
5690: }
5691: # ------------------------------------------------ Check supplied server name
5692: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5693: if (! &is_library($course_server)) {
5694: return 'error:bad server name '.$course_server;
5695: }
5696: # ------------------------------------------------------------- Make the course
5697: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5698: $course_server);
5699: unless ($reply eq 'ok') { return 'error: '.$reply; }
5700: $uhome=&homeserver($uname,$udom,'true');
5701: if (($uhome eq '') || ($uhome eq 'no_host')) {
5702: return 'error: no such course';
5703: }
5704: # ----------------------------------------------------------------- Course made
5705: # log existence
5706: my $newcourse = {
5707: $udom.'_'.$uname => {
5708: description => $description,
5709: inst_code => $inst_code,
5710: owner => $course_owner,
5711: type => $crstype,
5712: },
5713: };
5714: &courseidput($udom,$newcourse,$uhome,'notime');
5715: # set toplevel url
5716: my $topurl=$url;
5717: unless ($nonstandard) {
5718: # ------------------------------------------ For standard courses, make top url
5719: my $mapurl=&clutter($url);
5720: if ($mapurl eq '/res/') { $mapurl=''; }
5721: $env{'form.initmap'}=(<<ENDINITMAP);
5722: <map>
5723: <resource id="1" type="start"></resource>
5724: <resource id="2" src="$mapurl"></resource>
5725: <resource id="3" type="finish"></resource>
5726: <link index="1" from="1" to="2"></link>
5727: <link index="2" from="2" to="3"></link>
5728: </map>
5729: ENDINITMAP
5730: $topurl=&declutter(
5731: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5732: );
5733: }
5734: # ----------------------------------------------------------- Write preferences
5735: &writecoursepref($udom.'_'.$uname,
5736: ('description' => $description,
5737: 'url' => $topurl));
5738: return '/'.$udom.'/'.$uname;
5739: }
5740:
5741: sub is_course {
5742: my ($cdom,$cnum) = @_;
5743: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5744: undef,'.');
5745: if (exists($courses{$cdom.'_'.$cnum})) {
5746: return 1;
5747: }
5748: return 0;
5749: }
5750:
5751: # ---------------------------------------------------------- Assign Custom Role
5752:
5753: sub assigncustomrole {
5754: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
5755: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5756: $end,$start,$deleteflag);
5757: }
5758:
5759: # ----------------------------------------------------------------- Revoke Role
5760:
5761: sub revokerole {
5762: my ($udom,$uname,$url,$role,$deleteflag)=@_;
5763: my $now=time;
5764: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
5765: }
5766:
5767: # ---------------------------------------------------------- Revoke Custom Role
5768:
5769: sub revokecustomrole {
5770: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
5771: my $now=time;
5772: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5773: $deleteflag);
5774: }
5775:
5776: # ------------------------------------------------------------ Disk usage
5777: sub diskusage {
5778: my ($udom,$uname,$directoryRoot)=@_;
5779: $directoryRoot =~ s/\/$//;
5780: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
5781: return $listing;
5782: }
5783:
5784: sub is_locked {
5785: my ($file_name, $domain, $user) = @_;
5786: my @check;
5787: my $is_locked;
5788: push @check, $file_name;
5789: my %locked = &get('file_permissions',\@check,
5790: $env{'user.domain'},$env{'user.name'});
5791: my ($tmp)=keys(%locked);
5792: if ($tmp=~/^error:/) { undef(%locked); }
5793:
5794: if (ref($locked{$file_name}) eq 'ARRAY') {
5795: $is_locked = 'false';
5796: foreach my $entry (@{$locked{$file_name}}) {
5797: if (ref($entry) eq 'ARRAY') {
5798: $is_locked = 'true';
5799: last;
5800: }
5801: }
5802: } else {
5803: $is_locked = 'false';
5804: }
5805: }
5806:
5807: sub declutter_portfile {
5808: my ($file) = @_;
5809: $file =~ s{^(/portfolio/|portfolio/)}{/};
5810: return $file;
5811: }
5812:
5813: # ------------------------------------------------------------- Mark as Read Only
5814:
5815: sub mark_as_readonly {
5816: my ($domain,$user,$files,$what) = @_;
5817: my %current_permissions = &dump('file_permissions',$domain,$user);
5818: my ($tmp)=keys(%current_permissions);
5819: if ($tmp=~/^error:/) { undef(%current_permissions); }
5820: foreach my $file (@{$files}) {
5821: $file = &declutter_portfile($file);
5822: push(@{$current_permissions{$file}},$what);
5823: }
5824: &put('file_permissions',\%current_permissions,$domain,$user);
5825: return;
5826: }
5827:
5828: # ------------------------------------------------------------Save Selected Files
5829:
5830: sub save_selected_files {
5831: my ($user, $path, @files) = @_;
5832: my $filename = $user."savedfiles";
5833: my @other_files = &files_not_in_path($user, $path);
5834: open (OUT, '>'.$tmpdir.$filename);
5835: foreach my $file (@files) {
5836: print (OUT $env{'form.currentpath'}.$file."\n");
5837: }
5838: foreach my $file (@other_files) {
5839: print (OUT $file."\n");
5840: }
5841: close (OUT);
5842: return 'ok';
5843: }
5844:
5845: sub clear_selected_files {
5846: my ($user) = @_;
5847: my $filename = $user."savedfiles";
5848: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5849: print (OUT undef);
5850: close (OUT);
5851: return ("ok");
5852: }
5853:
5854: sub files_in_path {
5855: my ($user, $path) = @_;
5856: my $filename = $user."savedfiles";
5857: my %return_files;
5858: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5859: while (my $line_in = <IN>) {
5860: chomp ($line_in);
5861: my @paths_and_file = split (m!/!, $line_in);
5862: my $file_part = pop (@paths_and_file);
5863: my $path_part = join ('/', @paths_and_file);
5864: $path_part.='/';
5865: my $path_and_file = $path_part.$file_part;
5866: if ($path_part eq $path) {
5867: $return_files{$file_part}= 'selected';
5868: }
5869: }
5870: close (IN);
5871: return (\%return_files);
5872: }
5873:
5874: # called in portfolio select mode, to show files selected NOT in current directory
5875: sub files_not_in_path {
5876: my ($user, $path) = @_;
5877: my $filename = $user."savedfiles";
5878: my @return_files;
5879: my $path_part;
5880: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5881: while (my $line = <IN>) {
5882: #ok, I know it's clunky, but I want it to work
5883: my @paths_and_file = split(m|/|, $line);
5884: my $file_part = pop(@paths_and_file);
5885: chomp($file_part);
5886: my $path_part = join('/', @paths_and_file);
5887: $path_part .= '/';
5888: my $path_and_file = $path_part.$file_part;
5889: if ($path_part ne $path) {
5890: push(@return_files, ($path_and_file));
5891: }
5892: }
5893: close(OUT);
5894: return (@return_files);
5895: }
5896:
5897: #----------------------------------------------Get portfolio file permissions
5898:
5899: sub get_portfile_permissions {
5900: my ($domain,$user) = @_;
5901: my %current_permissions = &dump('file_permissions',$domain,$user);
5902: my ($tmp)=keys(%current_permissions);
5903: if ($tmp=~/^error:/) { undef(%current_permissions); }
5904: return \%current_permissions;
5905: }
5906:
5907: #---------------------------------------------Get portfolio file access controls
5908:
5909: sub get_access_controls {
5910: my ($current_permissions,$group,$file) = @_;
5911: my %access;
5912: my $real_file = $file;
5913: $file =~ s/\.meta$//;
5914: if (defined($file)) {
5915: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
5916: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
5917: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
5918: }
5919: }
5920: } else {
5921: foreach my $key (keys(%{$current_permissions})) {
5922: if ($key =~ /\0accesscontrol$/) {
5923: if (defined($group)) {
5924: if ($key !~ m-^\Q$group\E/-) {
5925: next;
5926: }
5927: }
5928: my ($fullpath) = split(/\0/,$key);
5929: if (ref($$current_permissions{$key}) eq 'HASH') {
5930: foreach my $control (keys(%{$$current_permissions{$key}})) {
5931: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
5932: }
5933: }
5934: }
5935: }
5936: }
5937: return %access;
5938: }
5939:
5940: sub modify_access_controls {
5941: my ($file_name,$changes,$domain,$user)=@_;
5942: my ($outcome,$deloutcome);
5943: my %store_permissions;
5944: my %new_values;
5945: my %new_control;
5946: my %translation;
5947: my @deletions = ();
5948: my $now = time;
5949: if (exists($$changes{'activate'})) {
5950: if (ref($$changes{'activate'}) eq 'HASH') {
5951: my @newitems = sort(keys(%{$$changes{'activate'}}));
5952: my $numnew = scalar(@newitems);
5953: for (my $i=0; $i<$numnew; $i++) {
5954: my $newkey = $newitems[$i];
5955: my $newid = &Apache::loncommon::get_cgi_id();
5956: if ($newkey =~ /^\d+:/) {
5957: $newkey =~ s/^(\d+)/$newid/;
5958: $translation{$1} = $newid;
5959: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
5960: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
5961: $translation{$1} = $newid;
5962: }
5963: $new_values{$file_name."\0".$newkey} =
5964: $$changes{'activate'}{$newitems[$i]};
5965: $new_control{$newkey} = $now;
5966: }
5967: }
5968: }
5969: my %todelete;
5970: my %changed_items;
5971: foreach my $action ('delete','update') {
5972: if (exists($$changes{$action})) {
5973: if (ref($$changes{$action}) eq 'HASH') {
5974: foreach my $key (keys(%{$$changes{$action}})) {
5975: my ($itemnum) = ($key =~ /^([^:]+):/);
5976: if ($action eq 'delete') {
5977: $todelete{$itemnum} = 1;
5978: } else {
5979: $changed_items{$itemnum} = $key;
5980: }
5981: }
5982: }
5983: }
5984: }
5985: # get lock on access controls for file.
5986: my $lockhash = {
5987: $file_name."\0".'locked_access_records' => $env{'user.name'}.
5988: ':'.$env{'user.domain'},
5989: };
5990: my $tries = 0;
5991: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
5992:
5993: while (($gotlock ne 'ok') && $tries <3) {
5994: $tries ++;
5995: sleep 1;
5996: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
5997: }
5998: if ($gotlock eq 'ok') {
5999: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
6000: my ($tmp)=keys(%curr_permissions);
6001: if ($tmp=~/^error:/) { undef(%curr_permissions); }
6002: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
6003: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
6004: if (ref($curr_controls) eq 'HASH') {
6005: foreach my $control_item (keys(%{$curr_controls})) {
6006: my ($itemnum) = ($control_item =~ /^([^:]+):/);
6007: if (defined($todelete{$itemnum})) {
6008: push(@deletions,$file_name."\0".$control_item);
6009: } else {
6010: if (defined($changed_items{$itemnum})) {
6011: $new_control{$changed_items{$itemnum}} = $now;
6012: push(@deletions,$file_name."\0".$control_item);
6013: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6014: } else {
6015: $new_control{$control_item} = $$curr_controls{$control_item};
6016: }
6017: }
6018: }
6019: }
6020: }
6021: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6022: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6023: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6024: # remove lock
6025: my @del_lock = ($file_name."\0".'locked_access_records');
6026: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6027: my ($file,$group);
6028: if (&is_course($domain,$user)) {
6029: ($group,$file) = split(/\//,$file_name,2);
6030: } else {
6031: $file = $file_name;
6032: }
6033: my $sqlresult =
6034: &update_portfolio_table($user,$domain,$file,'portfolio_access',
6035: $group);
6036: } else {
6037: $outcome = "error: could not obtain lockfile\n";
6038: }
6039: return ($outcome,$deloutcome,\%new_values,\%translation);
6040: }
6041:
6042: sub make_public_indefinitely {
6043: my ($requrl) = @_;
6044: my $now = time;
6045: my $action = 'activate';
6046: my $aclnum = 0;
6047: if (&is_portfolio_url($requrl)) {
6048: my (undef,$udom,$unum,$file_name,$group) =
6049: &parse_portfolio_url($requrl);
6050: my $current_perms = &get_portfile_permissions($udom,$unum);
6051: my %access_controls = &get_access_controls($current_perms,
6052: $group,$file_name);
6053: foreach my $key (keys(%{$access_controls{$file_name}})) {
6054: my ($num,$scope,$end,$start) =
6055: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6056: if ($scope eq 'public') {
6057: if ($start <= $now && $end == 0) {
6058: $action = 'none';
6059: } else {
6060: $action = 'update';
6061: $aclnum = $num;
6062: }
6063: last;
6064: }
6065: }
6066: if ($action eq 'none') {
6067: return 'ok';
6068: } else {
6069: my %changes;
6070: my $newend = 0;
6071: my $newstart = $now;
6072: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6073: $changes{$action}{$newkey} = {
6074: type => 'public',
6075: time => {
6076: start => $newstart,
6077: end => $newend,
6078: },
6079: };
6080: my ($outcome,$deloutcome,$new_values,$translation) =
6081: &modify_access_controls($file_name,\%changes,$udom,$unum);
6082: return $outcome;
6083: }
6084: } else {
6085: return 'invalid';
6086: }
6087: }
6088:
6089: #------------------------------------------------------Get Marked as Read Only
6090:
6091: sub get_marked_as_readonly {
6092: my ($domain,$user,$what,$group) = @_;
6093: my $current_permissions = &get_portfile_permissions($domain,$user);
6094: my @readonly_files;
6095: my $cmp1=$what;
6096: if (ref($what)) { $cmp1=join('',@{$what}) };
6097: while (my ($file_name,$value) = each(%{$current_permissions})) {
6098: if (defined($group)) {
6099: if ($file_name !~ m-^\Q$group\E/-) {
6100: next;
6101: }
6102: }
6103: if (ref($value) eq "ARRAY"){
6104: foreach my $stored_what (@{$value}) {
6105: my $cmp2=$stored_what;
6106: if (ref($stored_what) eq 'ARRAY') {
6107: $cmp2=join('',@{$stored_what});
6108: }
6109: if ($cmp1 eq $cmp2) {
6110: push(@readonly_files, $file_name);
6111: last;
6112: } elsif (!defined($what)) {
6113: push(@readonly_files, $file_name);
6114: last;
6115: }
6116: }
6117: }
6118: }
6119: return @readonly_files;
6120: }
6121: #-----------------------------------------------------------Get Marked as Read Only Hash
6122:
6123: sub get_marked_as_readonly_hash {
6124: my ($current_permissions,$group,$what) = @_;
6125: my %readonly_files;
6126: while (my ($file_name,$value) = each(%{$current_permissions})) {
6127: if (defined($group)) {
6128: if ($file_name !~ m-^\Q$group\E/-) {
6129: next;
6130: }
6131: }
6132: if (ref($value) eq "ARRAY"){
6133: foreach my $stored_what (@{$value}) {
6134: if (ref($stored_what) eq 'ARRAY') {
6135: foreach my $lock_descriptor(@{$stored_what}) {
6136: if ($lock_descriptor eq 'graded') {
6137: $readonly_files{$file_name} = 'graded';
6138: } elsif ($lock_descriptor eq 'handback') {
6139: $readonly_files{$file_name} = 'handback';
6140: } else {
6141: if (!exists($readonly_files{$file_name})) {
6142: $readonly_files{$file_name} = 'locked';
6143: }
6144: }
6145: }
6146: }
6147: }
6148: }
6149: }
6150: return %readonly_files;
6151: }
6152: # ------------------------------------------------------------ Unmark as Read Only
6153:
6154: sub unmark_as_readonly {
6155: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6156: # for portfolio submissions, $what contains [$symb,$crsid]
6157: my ($domain,$user,$what,$file_name,$group) = @_;
6158: $file_name = &declutter_portfile($file_name);
6159: my $symb_crs = $what;
6160: if (ref($what)) { $symb_crs=join('',@$what); }
6161: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
6162: my ($tmp)=keys(%current_permissions);
6163: if ($tmp=~/^error:/) { undef(%current_permissions); }
6164: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
6165: foreach my $file (@readonly_files) {
6166: my $clean_file = &declutter_portfile($file);
6167: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
6168: my $current_locks = $current_permissions{$file};
6169: my @new_locks;
6170: my @del_keys;
6171: if (ref($current_locks) eq "ARRAY"){
6172: foreach my $locker (@{$current_locks}) {
6173: my $compare=$locker;
6174: if (ref($locker) eq 'ARRAY') {
6175: $compare=join('',@{$locker});
6176: if ($compare ne $symb_crs) {
6177: push(@new_locks, $locker);
6178: }
6179: }
6180: }
6181: if (scalar(@new_locks) > 0) {
6182: $current_permissions{$file} = \@new_locks;
6183: } else {
6184: push(@del_keys, $file);
6185: &del('file_permissions',\@del_keys, $domain, $user);
6186: delete($current_permissions{$file});
6187: }
6188: }
6189: }
6190: &put('file_permissions',\%current_permissions,$domain,$user);
6191: return;
6192: }
6193:
6194: # ------------------------------------------------------------ Directory lister
6195:
6196: sub dirlist {
6197: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
6198:
6199: $uri=~s/^\///;
6200: $uri=~s/\/$//;
6201: my ($udom, $uname);
6202: (undef,$udom,$uname)=split(/\//,$uri);
6203: if(defined($userdomain)) {
6204: $udom = $userdomain;
6205: }
6206: if(defined($username)) {
6207: $uname = $username;
6208: }
6209:
6210: my $dirRoot = $perlvar{'lonDocRoot'};
6211: if(defined($alternateDirectoryRoot)) {
6212: $dirRoot = $alternateDirectoryRoot;
6213: $dirRoot =~ s/\/$//;
6214: }
6215:
6216: if($udom) {
6217: if($uname) {
6218: my $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
6219: &homeserver($uname,$udom));
6220: my @listing_results;
6221: if ($listing eq 'unknown_cmd') {
6222: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
6223: &homeserver($uname,$udom));
6224: @listing_results = split(/:/,$listing);
6225: } else {
6226: @listing_results = map { &unescape($_); } split(/:/,$listing);
6227: }
6228: return @listing_results;
6229: } elsif(!defined($alternateDirectoryRoot)) {
6230: my %allusers;
6231: my %servers = &get_servers($udom,'library');
6232: foreach my $tryserver (keys(%servers)) {
6233: my $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
6234: $udom, $tryserver);
6235: my @listing_results;
6236: if ($listing eq 'unknown_cmd') {
6237: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
6238: $udom, $tryserver);
6239: @listing_results = split(/:/,$listing);
6240: } else {
6241: @listing_results =
6242: map { &unescape($_); } split(/:/,$listing);
6243: }
6244: if ($listing_results[0] ne 'no_such_dir' &&
6245: $listing_results[0] ne 'empty' &&
6246: $listing_results[0] ne 'con_lost') {
6247: foreach my $line (@listing_results) {
6248: my ($entry) = split(/&/,$line,2);
6249: $allusers{$entry} = 1;
6250: }
6251: }
6252: }
6253: my $alluserstr='';
6254: foreach my $user (sort(keys(%allusers))) {
6255: $alluserstr.=$user.'&user:';
6256: }
6257: $alluserstr=~s/:$//;
6258: return split(/:/,$alluserstr);
6259: } else {
6260: return ('missing user name');
6261: }
6262: } elsif(!defined($alternateDirectoryRoot)) {
6263: my @all_domains = sort(&all_domains());
6264: foreach my $domain (@all_domains) {
6265: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
6266: }
6267: return @all_domains;
6268: } else {
6269: return ('missing domain');
6270: }
6271: }
6272:
6273: # --------------------------------------------- GetFileTimestamp
6274: # This function utilizes dirlist and returns the date stamp for
6275: # when it was last modified. It will also return an error of -1
6276: # if an error occurs
6277:
6278: ##
6279: ## FIXME: This subroutine assumes its caller knows something about the
6280: ## directory structure of the home server for the student ($root).
6281: ## Not a good assumption to make. Since this is for looking up files
6282: ## in user directories, the full path should be constructed by lond, not
6283: ## whatever machine we request data from.
6284: ##
6285: sub GetFileTimestamp {
6286: my ($studentDomain,$studentName,$filename,$root)=@_;
6287: $studentDomain = &LONCAPA::clean_domain($studentDomain);
6288: $studentName = &LONCAPA::clean_username($studentName);
6289: my $subdir=$studentName.'__';
6290: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
6291: my $proname="$studentDomain/$subdir/$studentName";
6292: $proname .= '/'.$filename;
6293: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
6294: $studentName, $root);
6295: my @stats = split('&', $fileStat);
6296: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6297: # @stats contains first the filename, then the stat output
6298: return $stats[10]; # so this is 10 instead of 9.
6299: } else {
6300: return -1;
6301: }
6302: }
6303:
6304: sub stat_file {
6305: my ($uri) = @_;
6306: $uri = &clutter_with_no_wrapper($uri);
6307:
6308: my ($udom,$uname,$file,$dir);
6309: if ($uri =~ m-^/(uploaded|editupload)/-) {
6310: ($udom,$uname,$file) =
6311: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
6312: $file = 'userfiles/'.$file;
6313: $dir = &propath($udom,$uname);
6314: }
6315: if ($uri =~ m-^/res/-) {
6316: ($udom,$uname) =
6317: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
6318: $file = $uri;
6319: }
6320:
6321: if (!$udom || !$uname || !$file) {
6322: # unable to handle the uri
6323: return ();
6324: }
6325:
6326: my ($result) = &dirlist($file,$udom,$uname,$dir);
6327: my @stats = split('&', $result);
6328:
6329: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6330: shift(@stats); #filename is first
6331: return @stats;
6332: }
6333: return ();
6334: }
6335:
6336: # -------------------------------------------------------- Value of a Condition
6337:
6338: # gets the value of a specific preevaluated condition
6339: # stored in the string $env{user.state.<cid>}
6340: # or looks up a condition reference in the bighash and if if hasn't
6341: # already been evaluated recurses into docondval to get the value of
6342: # the condition, then memoizing it to
6343: # $env{user.state.<cid>.<condition>}
6344: sub directcondval {
6345: my $number=shift;
6346: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
6347: &Apache::lonuserstate::evalstate();
6348: }
6349: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
6350: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
6351: } elsif ($number =~ /^_/) {
6352: my $sub_condition;
6353: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6354: &GDBM_READER(),0640)) {
6355: $sub_condition=$bighash{'conditions'.$number};
6356: untie(%bighash);
6357: }
6358: my $value = &docondval($sub_condition);
6359: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
6360: return $value;
6361: }
6362: if ($env{'user.state.'.$env{'request.course.id'}}) {
6363: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6364: } else {
6365: return 2;
6366: }
6367: }
6368:
6369: # get the collection of conditions for this resource
6370: sub condval {
6371: my $condidx=shift;
6372: my $allpathcond='';
6373: foreach my $cond (split(/\|/,$condidx)) {
6374: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6375: $allpathcond.=
6376: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6377: }
6378: }
6379: $allpathcond=~s/\|$//;
6380: return &docondval($allpathcond);
6381: }
6382:
6383: #evaluates an expression of conditions
6384: sub docondval {
6385: my ($allpathcond) = @_;
6386: my $result=0;
6387: if ($env{'request.course.id'}
6388: && defined($allpathcond)) {
6389: my $operand='|';
6390: my @stack;
6391: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6392: if ($chunk eq '(') {
6393: push @stack,($operand,$result);
6394: } elsif ($chunk eq ')') {
6395: my $before=pop @stack;
6396: if (pop @stack eq '&') {
6397: $result=$result>$before?$before:$result;
6398: } else {
6399: $result=$result>$before?$result:$before;
6400: }
6401: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6402: $operand=$chunk;
6403: } else {
6404: my $new=directcondval($chunk);
6405: if ($operand eq '&') {
6406: $result=$result>$new?$new:$result;
6407: } else {
6408: $result=$result>$new?$result:$new;
6409: }
6410: }
6411: }
6412: }
6413: return $result;
6414: }
6415:
6416: # ---------------------------------------------------- Devalidate courseresdata
6417:
6418: sub devalidatecourseresdata {
6419: my ($coursenum,$coursedomain)=@_;
6420: my $hashid=$coursenum.':'.$coursedomain;
6421: &devalidate_cache_new('courseres',$hashid);
6422: }
6423:
6424:
6425: # --------------------------------------------------- Course Resourcedata Query
6426: #
6427: # Parameters:
6428: # $coursenum - Number of the course.
6429: # $coursedomain - Domain at which the course was created.
6430: # Returns:
6431: # A hash of the course parameters along (I think) with timestamps
6432: # and version info.
6433:
6434: sub get_courseresdata {
6435: my ($coursenum,$coursedomain)=@_;
6436: my $coursehom=&homeserver($coursenum,$coursedomain);
6437: my $hashid=$coursenum.':'.$coursedomain;
6438: my ($result,$cached)=&is_cached_new('courseres',$hashid);
6439: my %dumpreply;
6440: unless (defined($cached)) {
6441: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
6442: $result=\%dumpreply;
6443: my ($tmp) = keys(%dumpreply);
6444: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6445: &do_cache_new('courseres',$hashid,$result,600);
6446: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
6447: return $tmp;
6448: } elsif ($tmp =~ /^(error)/) {
6449: $result=undef;
6450: &do_cache_new('courseres',$hashid,$result,600);
6451: }
6452: }
6453: return $result;
6454: }
6455:
6456: sub devalidateuserresdata {
6457: my ($uname,$udom)=@_;
6458: my $hashid="$udom:$uname";
6459: &devalidate_cache_new('userres',$hashid);
6460: }
6461:
6462: sub get_userresdata {
6463: my ($uname,$udom)=@_;
6464: #most student don\'t have any data set, check if there is some data
6465: if (&EXT_cache_status($udom,$uname)) { return undef; }
6466:
6467: my $hashid="$udom:$uname";
6468: my ($result,$cached)=&is_cached_new('userres',$hashid);
6469: if (!defined($cached)) {
6470: my %resourcedata=&dump('resourcedata',$udom,$uname);
6471: $result=\%resourcedata;
6472: &do_cache_new('userres',$hashid,$result,600);
6473: }
6474: my ($tmp)=keys(%$result);
6475: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
6476: return $result;
6477: }
6478: #error 2 occurs when the .db doesn't exist
6479: if ($tmp!~/error: 2 /) {
6480: &logthis("<font color=\"blue\">WARNING:".
6481: " Trying to get resource data for ".
6482: $uname." at ".$udom.": ".
6483: $tmp."</font>");
6484: } elsif ($tmp=~/error: 2 /) {
6485: #&EXT_cache_set($udom,$uname);
6486: &do_cache_new('userres',$hashid,undef,600);
6487: undef($tmp); # not really an error so don't send it back
6488: }
6489: return $tmp;
6490: }
6491: #----------------------------------------------- resdata - return resource data
6492: # Purpose:
6493: # Return resource data for either users or for a course.
6494: # Parameters:
6495: # $name - Course/user name.
6496: # $domain - Name of the domain the user/course is registered on.
6497: # $type - Type of thing $name is (must be 'course' or 'user'
6498: # @which - Array of names of resources desired.
6499: # Returns:
6500: # The value of the first reasource in @which that is found in the
6501: # resource hash.
6502: # Exceptional Conditions:
6503: # If the $type passed in is not valid (not the string 'course' or
6504: # 'user', an undefined reference is returned.
6505: # If none of the resources are found, an undef is returned
6506: sub resdata {
6507: my ($name,$domain,$type,@which)=@_;
6508: my $result;
6509: if ($type eq 'course') {
6510: $result=&get_courseresdata($name,$domain);
6511: } elsif ($type eq 'user') {
6512: $result=&get_userresdata($name,$domain);
6513: }
6514: if (!ref($result)) { return $result; }
6515: foreach my $item (@which) {
6516: if (defined($result->{$item->[0]})) {
6517: return [$result->{$item->[0]},$item->[1]];
6518: }
6519: }
6520: return undef;
6521: }
6522:
6523: #
6524: # EXT resource caching routines
6525: #
6526:
6527: sub clear_EXT_cache_status {
6528: &delenv('cache.EXT.');
6529: }
6530:
6531: sub EXT_cache_status {
6532: my ($target_domain,$target_user) = @_;
6533: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6534: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6535: # We know already the user has no data
6536: return 1;
6537: } else {
6538: return 0;
6539: }
6540: }
6541:
6542: sub EXT_cache_set {
6543: my ($target_domain,$target_user) = @_;
6544: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6545: #&appenv({$cachename => time});
6546: }
6547:
6548: # --------------------------------------------------------- Value of a Variable
6549: sub EXT {
6550:
6551: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6552: unless ($varname) { return ''; }
6553: #get real user name/domain, courseid and symb
6554: my $courseid;
6555: my $publicuser;
6556: if ($symbparm) {
6557: $symbparm=&get_symb_from_alias($symbparm);
6558: }
6559: if (!($uname && $udom)) {
6560: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6561: if (!$symbparm) { $symbparm=$cursymb; }
6562: } else {
6563: $courseid=$env{'request.course.id'};
6564: }
6565: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6566: my $rest;
6567: if (defined($therest[0])) {
6568: $rest=join('.',@therest);
6569: } else {
6570: $rest='';
6571: }
6572:
6573: my $qualifierrest=$qualifier;
6574: if ($rest) { $qualifierrest.='.'.$rest; }
6575: my $spacequalifierrest=$space;
6576: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6577: if ($realm eq 'user') {
6578: # --------------------------------------------------------------- user.resource
6579: if ($space eq 'resource') {
6580: if ( (defined($Apache::lonhomework::parsing_a_problem)
6581: || defined($Apache::lonhomework::parsing_a_task))
6582: &&
6583: ($symbparm eq &symbread()) ) {
6584: # if we are in the middle of processing the resource the
6585: # get the value we are planning on committing
6586: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6587: return $Apache::lonhomework::results{$qualifierrest};
6588: } else {
6589: return $Apache::lonhomework::history{$qualifierrest};
6590: }
6591: } else {
6592: my %restored;
6593: if ($publicuser || $env{'request.state'} eq 'construct') {
6594: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6595: } else {
6596: %restored=&restore($symbparm,$courseid,$udom,$uname);
6597: }
6598: return $restored{$qualifierrest};
6599: }
6600: # ----------------------------------------------------------------- user.access
6601: } elsif ($space eq 'access') {
6602: # FIXME - not supporting calls for a specific user
6603: return &allowed($qualifier,$rest);
6604: # ------------------------------------------ user.preferences, user.environment
6605: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6606: if (($uname eq $env{'user.name'}) &&
6607: ($udom eq $env{'user.domain'})) {
6608: return $env{join('.',('environment',$qualifierrest))};
6609: } else {
6610: my %returnhash;
6611: if (!$publicuser) {
6612: %returnhash=&userenvironment($udom,$uname,
6613: $qualifierrest);
6614: }
6615: return $returnhash{$qualifierrest};
6616: }
6617: # ----------------------------------------------------------------- user.course
6618: } elsif ($space eq 'course') {
6619: # FIXME - not supporting calls for a specific user
6620: return $env{join('.',('request.course',$qualifier))};
6621: # ------------------------------------------------------------------- user.role
6622: } elsif ($space eq 'role') {
6623: # FIXME - not supporting calls for a specific user
6624: my ($role,$where)=split(/\./,$env{'request.role'});
6625: if ($qualifier eq 'value') {
6626: return $role;
6627: } elsif ($qualifier eq 'extent') {
6628: return $where;
6629: }
6630: # ----------------------------------------------------------------- user.domain
6631: } elsif ($space eq 'domain') {
6632: return $udom;
6633: # ------------------------------------------------------------------- user.name
6634: } elsif ($space eq 'name') {
6635: return $uname;
6636: # ---------------------------------------------------- Any other user namespace
6637: } else {
6638: my %reply;
6639: if (!$publicuser) {
6640: %reply=&get($space,[$qualifierrest],$udom,$uname);
6641: }
6642: return $reply{$qualifierrest};
6643: }
6644: } elsif ($realm eq 'query') {
6645: # ---------------------------------------------- pull stuff out of query string
6646: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6647: [$spacequalifierrest]);
6648: return $env{'form.'.$spacequalifierrest};
6649: } elsif ($realm eq 'request') {
6650: # ------------------------------------------------------------- request.browser
6651: if ($space eq 'browser') {
6652: if ($qualifier eq 'textremote') {
6653: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6654: return 1;
6655: } else {
6656: return 0;
6657: }
6658: } else {
6659: return $env{'browser.'.$qualifier};
6660: }
6661: # ------------------------------------------------------------ request.filename
6662: } else {
6663: return $env{'request.'.$spacequalifierrest};
6664: }
6665: } elsif ($realm eq 'course') {
6666: # ---------------------------------------------------------- course.description
6667: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6668: } elsif ($realm eq 'resource') {
6669:
6670: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6671: if (!$symbparm) { $symbparm=&symbread(); }
6672: }
6673:
6674: if ($space eq 'title') {
6675: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6676: return &gettitle($symbparm);
6677: }
6678:
6679: if ($space eq 'map') {
6680: my ($map) = &decode_symb($symbparm);
6681: return &symbread($map);
6682: }
6683: if ($space eq 'filename') {
6684: if ($symbparm) {
6685: return &clutter((&decode_symb($symbparm))[2]);
6686: }
6687: return &hreflocation('',$env{'request.filename'});
6688: }
6689:
6690: my ($section, $group, @groups);
6691: my ($courselevelm,$courselevel);
6692: if ($symbparm && defined($courseid) &&
6693: $courseid eq $env{'request.course.id'}) {
6694:
6695: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6696:
6697: # ----------------------------------------------------- Cascading lookup scheme
6698: my $symbp=$symbparm;
6699: my $mapp=&deversion((&decode_symb($symbp))[0]);
6700:
6701: my $symbparm=$symbp.'.'.$spacequalifierrest;
6702: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6703:
6704: if (($env{'user.name'} eq $uname) &&
6705: ($env{'user.domain'} eq $udom)) {
6706: $section=$env{'request.course.sec'};
6707: @groups = split(/:/,$env{'request.course.groups'});
6708: @groups=&sort_course_groups($courseid,@groups);
6709: } else {
6710: if (! defined($usection)) {
6711: $section=&getsection($udom,$uname,$courseid);
6712: } else {
6713: $section = $usection;
6714: }
6715: @groups = &get_users_groups($udom,$uname,$courseid);
6716: }
6717:
6718: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6719: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6720: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6721:
6722: $courselevel=$courseid.'.'.$spacequalifierrest;
6723: my $courselevelr=$courseid.'.'.$symbparm;
6724: $courselevelm=$courseid.'.'.$mapparm;
6725:
6726: # ----------------------------------------------------------- first, check user
6727:
6728: my $userreply=&resdata($uname,$udom,'user',
6729: ([$courselevelr,'resource'],
6730: [$courselevelm,'map' ],
6731: [$courselevel, 'course' ]));
6732: if (defined($userreply)) { return &get_reply($userreply); }
6733:
6734: # ------------------------------------------------ second, check some of course
6735: my $coursereply;
6736: if (@groups > 0) {
6737: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6738: $mapparm,$spacequalifierrest);
6739: if (defined($coursereply)) { return &get_reply($coursereply); }
6740: }
6741:
6742: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6743: $env{'course.'.$courseid.'.domain'},
6744: 'course',
6745: ([$seclevelr, 'resource'],
6746: [$seclevelm, 'map' ],
6747: [$seclevel, 'course' ],
6748: [$courselevelr,'resource']));
6749: if (defined($coursereply)) { return &get_reply($coursereply); }
6750:
6751: # ------------------------------------------------------ third, check map parms
6752: my %parmhash=();
6753: my $thisparm='';
6754: if (tie(%parmhash,'GDBM_File',
6755: $env{'request.course.fn'}.'_parms.db',
6756: &GDBM_READER(),0640)) {
6757: $thisparm=$parmhash{$symbparm};
6758: untie(%parmhash);
6759: }
6760: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
6761: }
6762: # ------------------------------------------ fourth, look in resource metadata
6763:
6764: $spacequalifierrest=~s/\./\_/;
6765: my $filename;
6766: if (!$symbparm) { $symbparm=&symbread(); }
6767: if ($symbparm) {
6768: $filename=(&decode_symb($symbparm))[2];
6769: } else {
6770: $filename=$env{'request.filename'};
6771: }
6772: my $metadata=&metadata($filename,$spacequalifierrest);
6773: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6774: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6775: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6776:
6777: # ---------------------------------------------- fourth, look in rest of course
6778: if ($symbparm && defined($courseid) &&
6779: $courseid eq $env{'request.course.id'}) {
6780: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6781: $env{'course.'.$courseid.'.domain'},
6782: 'course',
6783: ([$courselevelm,'map' ],
6784: [$courselevel, 'course']));
6785: if (defined($coursereply)) { return &get_reply($coursereply); }
6786: }
6787: # ------------------------------------------------------------------ Cascade up
6788: unless ($space eq '0') {
6789: my @parts=split(/_/,$space);
6790: my $id=pop(@parts);
6791: my $part=join('_',@parts);
6792: if ($part eq '') { $part='0'; }
6793: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6794: $symbparm,$udom,$uname,$section,1);
6795: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
6796: }
6797: if ($recurse) { return undef; }
6798: my $pack_def=&packages_tab_default($filename,$varname);
6799: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
6800: # ---------------------------------------------------- Any other user namespace
6801: } elsif ($realm eq 'environment') {
6802: # ----------------------------------------------------------------- environment
6803: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6804: return $env{'environment.'.$spacequalifierrest};
6805: } else {
6806: if ($uname eq 'anonymous' && $udom eq '') {
6807: return '';
6808: }
6809: my %returnhash=&userenvironment($udom,$uname,
6810: $spacequalifierrest);
6811: return $returnhash{$spacequalifierrest};
6812: }
6813: } elsif ($realm eq 'system') {
6814: # ----------------------------------------------------------------- system.time
6815: if ($space eq 'time') {
6816: return time;
6817: }
6818: } elsif ($realm eq 'server') {
6819: # ----------------------------------------------------------------- system.time
6820: if ($space eq 'name') {
6821: return $ENV{'SERVER_NAME'};
6822: }
6823: }
6824: return '';
6825: }
6826:
6827: sub get_reply {
6828: my ($reply_value) = @_;
6829: if (ref($reply_value) eq 'ARRAY') {
6830: if (wantarray) {
6831: return @$reply_value;
6832: }
6833: return $reply_value->[0];
6834: } else {
6835: return $reply_value;
6836: }
6837: }
6838:
6839: sub check_group_parms {
6840: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
6841: my @groupitems = ();
6842: my $resultitem;
6843: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
6844: foreach my $group (@{$groups}) {
6845: foreach my $level (@levels) {
6846: my $item = $courseid.'.['.$group.'].'.$level->[0];
6847: push(@groupitems,[$item,$level->[1]]);
6848: }
6849: }
6850: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
6851: $env{'course.'.$courseid.'.domain'},
6852: 'course',@groupitems);
6853: return $coursereply;
6854: }
6855:
6856: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
6857: my ($courseid,@groups) = @_;
6858: @groups = sort(@groups);
6859: return @groups;
6860: }
6861:
6862: sub packages_tab_default {
6863: my ($uri,$varname)=@_;
6864: my (undef,$part,$name)=split(/\./,$varname);
6865:
6866: my (@extension,@specifics,$do_default);
6867: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
6868: my ($pack_type,$pack_part)=split(/_/,$package,2);
6869: if ($pack_type eq 'default') {
6870: $do_default=1;
6871: } elsif ($pack_type eq 'extension') {
6872: push(@extension,[$package,$pack_type,$pack_part]);
6873: } elsif ($pack_part eq $part || $pack_type eq 'part') {
6874: # only look at packages defaults for packages that this id is
6875: push(@specifics,[$package,$pack_type,$pack_part]);
6876: }
6877: }
6878: # first look for a package that matches the requested part id
6879: foreach my $package (@specifics) {
6880: my (undef,$pack_type,$pack_part)=@{$package};
6881: next if ($pack_part ne $part);
6882: if (defined($packagetab{"$pack_type&$name&default"})) {
6883: return $packagetab{"$pack_type&$name&default"};
6884: }
6885: }
6886: # look for any possible matching non extension_ package
6887: foreach my $package (@specifics) {
6888: my (undef,$pack_type,$pack_part)=@{$package};
6889: if (defined($packagetab{"$pack_type&$name&default"})) {
6890: return $packagetab{"$pack_type&$name&default"};
6891: }
6892: if ($pack_type eq 'part') { $pack_part='0'; }
6893: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
6894: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
6895: }
6896: }
6897: # look for any posible extension_ match
6898: foreach my $package (@extension) {
6899: my ($package,$pack_type)=@{$package};
6900: if (defined($packagetab{"$pack_type&$name&default"})) {
6901: return $packagetab{"$pack_type&$name&default"};
6902: }
6903: if (defined($packagetab{$package."&$name&default"})) {
6904: return $packagetab{$package."&$name&default"};
6905: }
6906: }
6907: # look for a global default setting
6908: if ($do_default && defined($packagetab{"default&$name&default"})) {
6909: return $packagetab{"default&$name&default"};
6910: }
6911: return undef;
6912: }
6913:
6914: sub add_prefix_and_part {
6915: my ($prefix,$part)=@_;
6916: my $keyroot;
6917: if (defined($prefix) && $prefix !~ /^__/) {
6918: # prefix that has a part already
6919: $keyroot=$prefix;
6920: } elsif (defined($prefix)) {
6921: # prefix that is missing a part
6922: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
6923: } else {
6924: # no prefix at all
6925: if (defined($part)) { $keyroot='_'.$part; }
6926: }
6927: return $keyroot;
6928: }
6929:
6930: # ---------------------------------------------------------------- Get metadata
6931:
6932: my %metaentry;
6933: sub metadata {
6934: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
6935: $uri=&declutter($uri);
6936: # if it is a non metadata possible uri return quickly
6937: if (($uri eq '') ||
6938: (($uri =~ m|^/*adm/|) &&
6939: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
6940: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
6941: return undef;
6942: }
6943: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
6944: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
6945: return undef;
6946: }
6947: my $filename=$uri;
6948: $uri=~s/\.meta$//;
6949: #
6950: # Is the metadata already cached?
6951: # Look at timestamp of caching
6952: # Everything is cached by the main uri, libraries are never directly cached
6953: #
6954: if (!defined($liburi)) {
6955: my ($result,$cached)=&is_cached_new('meta',$uri);
6956: if (defined($cached)) { return $result->{':'.$what}; }
6957: }
6958: {
6959: #
6960: # Is this a recursive call for a library?
6961: #
6962: # if (! exists($metacache{$uri})) {
6963: # $metacache{$uri}={};
6964: # }
6965: my $cachetime = 60*60;
6966: if ($liburi) {
6967: $liburi=&declutter($liburi);
6968: $filename=$liburi;
6969: } else {
6970: &devalidate_cache_new('meta',$uri);
6971: undef(%metaentry);
6972: }
6973: my %metathesekeys=();
6974: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
6975: my $metastring;
6976: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
6977: my $which = &hreflocation('','/'.($liburi || $uri));
6978: $metastring =
6979: &Apache::lonnet::ssi_body($which,
6980: ('grade_target' => 'meta'));
6981: $cachetime = 1; # only want this cached in the child not long term
6982: } elsif ($uri !~ m -^(editupload)/-) {
6983: my $file=&filelocation('',&clutter($filename));
6984: #push(@{$metaentry{$uri.'.file'}},$file);
6985: $metastring=&getfile($file);
6986: }
6987: my $parser=HTML::LCParser->new(\$metastring);
6988: my $token;
6989: undef %metathesekeys;
6990: while ($token=$parser->get_token) {
6991: if ($token->[0] eq 'S') {
6992: if (defined($token->[2]->{'package'})) {
6993: #
6994: # This is a package - get package info
6995: #
6996: my $package=$token->[2]->{'package'};
6997: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
6998: if (defined($token->[2]->{'id'})) {
6999: $keyroot.='_'.$token->[2]->{'id'};
7000: }
7001: if ($metaentry{':packages'}) {
7002: $metaentry{':packages'}.=','.$package.$keyroot;
7003: } else {
7004: $metaentry{':packages'}=$package.$keyroot;
7005: }
7006: foreach my $pack_entry (keys(%packagetab)) {
7007: my $part=$keyroot;
7008: $part=~s/^\_//;
7009: if ($pack_entry=~/^\Q$package\E\&/ ||
7010: $pack_entry=~/^\Q$package\E_0\&/) {
7011: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
7012: # ignore package.tab specified default values
7013: # here &package_tab_default() will fetch those
7014: if ($subp eq 'default') { next; }
7015: my $value=$packagetab{$pack_entry};
7016: my $unikey;
7017: if ($pack =~ /_0$/) {
7018: $unikey='parameter_0_'.$name;
7019: $part=0;
7020: } else {
7021: $unikey='parameter'.$keyroot.'_'.$name;
7022: }
7023: if ($subp eq 'display') {
7024: $value.=' [Part: '.$part.']';
7025: }
7026: $metaentry{':'.$unikey.'.part'}=$part;
7027: $metathesekeys{$unikey}=1;
7028: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7029: $metaentry{':'.$unikey.'.'.$subp}=$value;
7030: }
7031: if (defined($metaentry{':'.$unikey.'.default'})) {
7032: $metaentry{':'.$unikey}=
7033: $metaentry{':'.$unikey.'.default'};
7034: }
7035: }
7036: }
7037: } else {
7038: #
7039: # This is not a package - some other kind of start tag
7040: #
7041: my $entry=$token->[1];
7042: my $unikey;
7043: if ($entry eq 'import') {
7044: $unikey='';
7045: } else {
7046: $unikey=$entry;
7047: }
7048: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7049:
7050: if (defined($token->[2]->{'id'})) {
7051: $unikey.='_'.$token->[2]->{'id'};
7052: }
7053:
7054: if ($entry eq 'import') {
7055: #
7056: # Importing a library here
7057: #
7058: if ($depthcount<20) {
7059: my $location=$parser->get_text('/import');
7060: my $dir=$filename;
7061: $dir=~s|[^/]*$||;
7062: $location=&filelocation($dir,$location);
7063: my $metadata =
7064: &metadata($uri,'keys', $location,$unikey,
7065: $depthcount+1);
7066: foreach my $meta (split(',',$metadata)) {
7067: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7068: $metathesekeys{$meta}=1;
7069: }
7070: }
7071: } else {
7072:
7073: if (defined($token->[2]->{'name'})) {
7074: $unikey.='_'.$token->[2]->{'name'};
7075: }
7076: $metathesekeys{$unikey}=1;
7077: foreach my $param (@{$token->[3]}) {
7078: $metaentry{':'.$unikey.'.'.$param} =
7079: $token->[2]->{$param};
7080: }
7081: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7082: my $default=$metaentry{':'.$unikey.'.default'};
7083: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7084: # only ws inside the tag, and not in default, so use default
7085: # as value
7086: $metaentry{':'.$unikey}=$default;
7087: } elsif ( $internaltext =~ /\S/ ) {
7088: # something interesting inside the tag
7089: $metaentry{':'.$unikey}=$internaltext;
7090: } else {
7091: # no interesting values, don't set a default
7092: }
7093: # end of not-a-package not-a-library import
7094: }
7095: # end of not-a-package start tag
7096: }
7097: # the next is the end of "start tag"
7098: }
7099: }
7100: my ($extension) = ($uri =~ /\.(\w+)$/);
7101: $extension = lc($extension);
7102: if ($extension eq 'htm') { $extension='html'; }
7103:
7104: foreach my $key (keys(%packagetab)) {
7105: #no specific packages #how's our extension
7106: if ($key!~/^extension_\Q$extension\E&/) { next; }
7107: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7108: \%metathesekeys);
7109: }
7110:
7111: if (!exists($metaentry{':packages'})
7112: || $packagetab{"import_defaults&extension_$extension"}) {
7113: foreach my $key (keys(%packagetab)) {
7114: #no specific packages well let's get default then
7115: if ($key!~/^default&/) { next; }
7116: &metadata_create_package_def($uri,$key,'default',
7117: \%metathesekeys);
7118: }
7119: }
7120: # are there custom rights to evaluate
7121: if ($metaentry{':copyright'} eq 'custom') {
7122:
7123: #
7124: # Importing a rights file here
7125: #
7126: unless ($depthcount) {
7127: my $location=$metaentry{':customdistributionfile'};
7128: my $dir=$filename;
7129: $dir=~s|[^/]*$||;
7130: $location=&filelocation($dir,$location);
7131: my $rights_metadata =
7132: &metadata($uri,'keys',$location,'_rights',
7133: $depthcount+1);
7134: foreach my $rights (split(',',$rights_metadata)) {
7135: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7136: $metathesekeys{$rights}=1;
7137: }
7138: }
7139: }
7140: # uniqifiy package listing
7141: my %seen;
7142: my @uniq_packages =
7143: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
7144: $metaentry{':packages'} = join(',',@uniq_packages);
7145:
7146: $metaentry{':keys'} = join(',',keys(%metathesekeys));
7147: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
7148: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
7149: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
7150: # this is the end of "was not already recently cached
7151: }
7152: return $metaentry{':'.$what};
7153: }
7154:
7155: sub metadata_create_package_def {
7156: my ($uri,$key,$package,$metathesekeys)=@_;
7157: my ($pack,$name,$subp)=split(/\&/,$key);
7158: if ($subp eq 'default') { next; }
7159:
7160: if (defined($metaentry{':packages'})) {
7161: $metaentry{':packages'}.=','.$package;
7162: } else {
7163: $metaentry{':packages'}=$package;
7164: }
7165: my $value=$packagetab{$key};
7166: my $unikey;
7167: $unikey='parameter_0_'.$name;
7168: $metaentry{':'.$unikey.'.part'}=0;
7169: $$metathesekeys{$unikey}=1;
7170: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7171: $metaentry{':'.$unikey.'.'.$subp}=$value;
7172: }
7173: if (defined($metaentry{':'.$unikey.'.default'})) {
7174: $metaentry{':'.$unikey}=
7175: $metaentry{':'.$unikey.'.default'};
7176: }
7177: }
7178:
7179: sub metadata_generate_part0 {
7180: my ($metadata,$metacache,$uri) = @_;
7181: my %allnames;
7182: foreach my $metakey (keys(%$metadata)) {
7183: if ($metakey=~/^parameter\_(.*)/) {
7184: my $part=$$metacache{':'.$metakey.'.part'};
7185: my $name=$$metacache{':'.$metakey.'.name'};
7186: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
7187: $allnames{$name}=$part;
7188: }
7189: }
7190: }
7191: foreach my $name (keys(%allnames)) {
7192: $$metadata{"parameter_0_$name"}=1;
7193: my $key=":parameter_0_$name";
7194: $$metacache{"$key.part"}='0';
7195: $$metacache{"$key.name"}=$name;
7196: $$metacache{"$key.type"}=$$metacache{':parameter_'.
7197: $allnames{$name}.'_'.$name.
7198: '.type'};
7199: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
7200: '.display'};
7201: my $expr='[Part: '.$allnames{$name}.']';
7202: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
7203: $$metacache{"$key.display"}=$olddis;
7204: }
7205: }
7206:
7207: # ------------------------------------------------------ Devalidate title cache
7208:
7209: sub devalidate_title_cache {
7210: my ($url)=@_;
7211: if (!$env{'request.course.id'}) { return; }
7212: my $symb=&symbread($url);
7213: if (!$symb) { return; }
7214: my $key=$env{'request.course.id'}."\0".$symb;
7215: &devalidate_cache_new('title',$key);
7216: }
7217:
7218: # ------------------------------------------------- Get the title of a resource
7219:
7220: sub gettitle {
7221: my $urlsymb=shift;
7222: my $symb=&symbread($urlsymb);
7223: if ($symb) {
7224: my $key=$env{'request.course.id'}."\0".$symb;
7225: my ($result,$cached)=&is_cached_new('title',$key);
7226: if (defined($cached)) {
7227: return $result;
7228: }
7229: my ($map,$resid,$url)=&decode_symb($symb);
7230: my $title='';
7231: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
7232: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
7233: } else {
7234: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7235: &GDBM_READER(),0640)) {
7236: my $mapid=$bighash{'map_pc_'.&clutter($map)};
7237: $title=$bighash{'title_'.$mapid.'.'.$resid};
7238: untie(%bighash);
7239: }
7240: }
7241: $title=~s/\&colon\;/\:/gs;
7242: if ($title) {
7243: return &do_cache_new('title',$key,$title,600);
7244: }
7245: $urlsymb=$url;
7246: }
7247: my $title=&metadata($urlsymb,'title');
7248: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
7249: return $title;
7250: }
7251:
7252: sub get_slot {
7253: my ($which,$cnum,$cdom)=@_;
7254: if (!$cnum || !$cdom) {
7255: (undef,my $courseid)=&whichuser();
7256: $cdom=$env{'course.'.$courseid.'.domain'};
7257: $cnum=$env{'course.'.$courseid.'.num'};
7258: }
7259: my $key=join("\0",'slots',$cdom,$cnum,$which);
7260: my %slotinfo;
7261: if (exists($remembered{$key})) {
7262: $slotinfo{$which} = $remembered{$key};
7263: } else {
7264: %slotinfo=&get('slots',[$which],$cdom,$cnum);
7265: &Apache::lonhomework::showhash(%slotinfo);
7266: my ($tmp)=keys(%slotinfo);
7267: if ($tmp=~/^error:/) { return (); }
7268: $remembered{$key} = $slotinfo{$which};
7269: }
7270: if (ref($slotinfo{$which}) eq 'HASH') {
7271: return %{$slotinfo{$which}};
7272: }
7273: return $slotinfo{$which};
7274: }
7275: # ------------------------------------------------- Update symbolic store links
7276:
7277: sub symblist {
7278: my ($mapname,%newhash)=@_;
7279: $mapname=&deversion(&declutter($mapname));
7280: my %hash;
7281: if (($env{'request.course.fn'}) && (%newhash)) {
7282: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7283: &GDBM_WRCREAT(),0640)) {
7284: foreach my $url (keys %newhash) {
7285: next if ($url eq 'last_known'
7286: && $env{'form.no_update_last_known'});
7287: $hash{declutter($url)}=&encode_symb($mapname,
7288: $newhash{$url}->[1],
7289: $newhash{$url}->[0]);
7290: }
7291: if (untie(%hash)) {
7292: return 'ok';
7293: }
7294: }
7295: }
7296: return 'error';
7297: }
7298:
7299: # --------------------------------------------------------------- Verify a symb
7300:
7301: sub symbverify {
7302: my ($symb,$thisurl)=@_;
7303: my $thisfn=$thisurl;
7304: $thisfn=&declutter($thisfn);
7305: # direct jump to resource in page or to a sequence - will construct own symbs
7306: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
7307: # check URL part
7308: my ($map,$resid,$url)=&decode_symb($symb);
7309:
7310: unless ($url eq $thisfn) { return 0; }
7311:
7312: $symb=&symbclean($symb);
7313: $thisurl=&deversion($thisurl);
7314: $thisfn=&deversion($thisfn);
7315:
7316: my %bighash;
7317: my $okay=0;
7318:
7319: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7320: &GDBM_READER(),0640)) {
7321: my $ids=$bighash{'ids_'.&clutter($thisurl)};
7322: unless ($ids) {
7323: $ids=$bighash{'ids_/'.$thisurl};
7324: }
7325: if ($ids) {
7326: # ------------------------------------------------------------------- Has ID(s)
7327: foreach my $id (split(/\,/,$ids)) {
7328: my ($mapid,$resid)=split(/\./,$id);
7329: if (
7330: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
7331: eq $symb) {
7332: if (($env{'request.role.adv'}) ||
7333: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
7334: $okay=1;
7335: }
7336: }
7337: }
7338: }
7339: untie(%bighash);
7340: }
7341: return $okay;
7342: }
7343:
7344: # --------------------------------------------------------------- Clean-up symb
7345:
7346: sub symbclean {
7347: my $symb=shift;
7348: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7349: # remove version from map
7350: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
7351:
7352: # remove version from URL
7353: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
7354:
7355: # remove wrapper
7356:
7357: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
7358: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
7359: return $symb;
7360: }
7361:
7362: # ---------------------------------------------- Split symb to find map and url
7363:
7364: sub encode_symb {
7365: my ($map,$resid,$url)=@_;
7366: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
7367: }
7368:
7369: sub decode_symb {
7370: my $symb=shift;
7371: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7372: my ($map,$resid,$url)=split(/___/,$symb);
7373: return (&fixversion($map),$resid,&fixversion($url));
7374: }
7375:
7376: sub fixversion {
7377: my $fn=shift;
7378: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
7379: my %bighash;
7380: my $uri=&clutter($fn);
7381: my $key=$env{'request.course.id'}.'_'.$uri;
7382: # is this cached?
7383: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7384: if (defined($cached)) { return $result; }
7385: # unfortunately not cached, or expired
7386: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7387: &GDBM_READER(),0640)) {
7388: if ($bighash{'version_'.$uri}) {
7389: my $version=$bighash{'version_'.$uri};
7390: unless (($version eq 'mostrecent') ||
7391: ($version==&getversion($uri))) {
7392: $uri=~s/\.(\w+)$/\.$version\.$1/;
7393: }
7394: }
7395: untie %bighash;
7396: }
7397: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7398: }
7399:
7400: sub deversion {
7401: my $url=shift;
7402: $url=~s/\.\d+\.(\w+)$/\.$1/;
7403: return $url;
7404: }
7405:
7406: # ------------------------------------------------------ Return symb list entry
7407:
7408: sub symbread {
7409: my ($thisfn,$donotrecurse)=@_;
7410: my $cache_str='request.symbread.cached.'.$thisfn;
7411: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7412: # no filename provided? try from environment
7413: unless ($thisfn) {
7414: if ($env{'request.symb'}) {
7415: return $env{$cache_str}=&symbclean($env{'request.symb'});
7416: }
7417: $thisfn=$env{'request.filename'};
7418: }
7419: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7420: # is that filename actually a symb? Verify, clean, and return
7421: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7422: if (&symbverify($thisfn,$1)) {
7423: return $env{$cache_str}=&symbclean($thisfn);
7424: }
7425: }
7426: $thisfn=declutter($thisfn);
7427: my %hash;
7428: my %bighash;
7429: my $syval='';
7430: if (($env{'request.course.fn'}) && ($thisfn)) {
7431: my $targetfn = $thisfn;
7432: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7433: $targetfn = 'adm/wrapper/'.$thisfn;
7434: }
7435: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
7436: $targetfn=$1;
7437: }
7438: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7439: &GDBM_READER(),0640)) {
7440: $syval=$hash{$targetfn};
7441: untie(%hash);
7442: }
7443: # ---------------------------------------------------------- There was an entry
7444: if ($syval) {
7445: #unless ($syval=~/\_\d+$/) {
7446: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
7447: #&appenv({'request.ambiguous' => $thisfn});
7448: #return $env{$cache_str}='';
7449: #}
7450: #$syval.=$1;
7451: #}
7452: } else {
7453: # ------------------------------------------------------- Was not in symb table
7454: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7455: &GDBM_READER(),0640)) {
7456: # ---------------------------------------------- Get ID(s) for current resource
7457: my $ids=$bighash{'ids_'.&clutter($thisfn)};
7458: unless ($ids) {
7459: $ids=$bighash{'ids_/'.$thisfn};
7460: }
7461: unless ($ids) {
7462: # alias?
7463: $ids=$bighash{'mapalias_'.$thisfn};
7464: }
7465: if ($ids) {
7466: # ------------------------------------------------------------------- Has ID(s)
7467: my @possibilities=split(/\,/,$ids);
7468: if ($#possibilities==0) {
7469: # ----------------------------------------------- There is only one possibility
7470: my ($mapid,$resid)=split(/\./,$ids);
7471: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7472: $resid,$thisfn);
7473: } elsif (!$donotrecurse) {
7474: # ------------------------------------------ There is more than one possibility
7475: my $realpossible=0;
7476: foreach my $id (@possibilities) {
7477: my $file=$bighash{'src_'.$id};
7478: if (&allowed('bre',$file)) {
7479: my ($mapid,$resid)=split(/\./,$id);
7480: if ($bighash{'map_type_'.$mapid} ne 'page') {
7481: $realpossible++;
7482: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7483: $resid,$thisfn);
7484: }
7485: }
7486: }
7487: if ($realpossible!=1) { $syval=''; }
7488: } else {
7489: $syval='';
7490: }
7491: }
7492: untie(%bighash)
7493: }
7494: }
7495: if ($syval) {
7496: return $env{$cache_str}=$syval;
7497: }
7498: }
7499: &appenv({'request.ambiguous' => $thisfn});
7500: return $env{$cache_str}='';
7501: }
7502:
7503: # ---------------------------------------------------------- Return random seed
7504:
7505: sub numval {
7506: my $txt=shift;
7507: $txt=~tr/A-J/0-9/;
7508: $txt=~tr/a-j/0-9/;
7509: $txt=~tr/K-T/0-9/;
7510: $txt=~tr/k-t/0-9/;
7511: $txt=~tr/U-Z/0-5/;
7512: $txt=~tr/u-z/0-5/;
7513: $txt=~s/\D//g;
7514: if ($_64bit) { if ($txt > 2**32) { return -1; } }
7515: return int($txt);
7516: }
7517:
7518: sub numval2 {
7519: my $txt=shift;
7520: $txt=~tr/A-J/0-9/;
7521: $txt=~tr/a-j/0-9/;
7522: $txt=~tr/K-T/0-9/;
7523: $txt=~tr/k-t/0-9/;
7524: $txt=~tr/U-Z/0-5/;
7525: $txt=~tr/u-z/0-5/;
7526: $txt=~s/\D//g;
7527: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7528: my $total;
7529: foreach my $val (@txts) { $total+=$val; }
7530: if ($_64bit) { if ($total > 2**32) { return -1; } }
7531: return int($total);
7532: }
7533:
7534: sub numval3 {
7535: use integer;
7536: my $txt=shift;
7537: $txt=~tr/A-J/0-9/;
7538: $txt=~tr/a-j/0-9/;
7539: $txt=~tr/K-T/0-9/;
7540: $txt=~tr/k-t/0-9/;
7541: $txt=~tr/U-Z/0-5/;
7542: $txt=~tr/u-z/0-5/;
7543: $txt=~s/\D//g;
7544: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7545: my $total;
7546: foreach my $val (@txts) { $total+=$val; }
7547: if ($_64bit) { $total=(($total<<32)>>32); }
7548: return $total;
7549: }
7550:
7551: sub digest {
7552: my ($data)=@_;
7553: my $digest=&Digest::MD5::md5($data);
7554: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7555: my ($e,$f);
7556: {
7557: use integer;
7558: $e=($a+$b);
7559: $f=($c+$d);
7560: if ($_64bit) {
7561: $e=(($e<<32)>>32);
7562: $f=(($f<<32)>>32);
7563: }
7564: }
7565: if (wantarray) {
7566: return ($e,$f);
7567: } else {
7568: my $g;
7569: {
7570: use integer;
7571: $g=($e+$f);
7572: if ($_64bit) {
7573: $g=(($g<<32)>>32);
7574: }
7575: }
7576: return $g;
7577: }
7578: }
7579:
7580: sub latest_rnd_algorithm_id {
7581: return '64bit5';
7582: }
7583:
7584: sub get_rand_alg {
7585: my ($courseid)=@_;
7586: if (!$courseid) { $courseid=(&whichuser())[1]; }
7587: if ($courseid) {
7588: return $env{"course.$courseid.rndseed"};
7589: }
7590: return &latest_rnd_algorithm_id();
7591: }
7592:
7593: sub validCODE {
7594: my ($CODE)=@_;
7595: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7596: return 0;
7597: }
7598:
7599: sub getCODE {
7600: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7601: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7602: defined($Apache::lonhomework::parsing_a_task) ) &&
7603: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7604: return $Apache::lonhomework::history{'resource.CODE'};
7605: }
7606: return undef;
7607: }
7608:
7609: sub rndseed {
7610: my ($symb,$courseid,$domain,$username)=@_;
7611: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7612: if (!defined($symb)) {
7613: unless ($symb=$wsymb) { return time; }
7614: }
7615: if (!$courseid) { $courseid=$wcourseid; }
7616: if (!$domain) { $domain=$wdomain; }
7617: if (!$username) { $username=$wusername }
7618: my $which=&get_rand_alg();
7619:
7620: if (defined(&getCODE())) {
7621: if ($which eq '64bit5') {
7622: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7623: } elsif ($which eq '64bit4') {
7624: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7625: } else {
7626: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7627: }
7628: } elsif ($which eq '64bit5') {
7629: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7630: } elsif ($which eq '64bit4') {
7631: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7632: } elsif ($which eq '64bit3') {
7633: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7634: } elsif ($which eq '64bit2') {
7635: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7636: } elsif ($which eq '64bit') {
7637: return &rndseed_64bit($symb,$courseid,$domain,$username);
7638: }
7639: return &rndseed_32bit($symb,$courseid,$domain,$username);
7640: }
7641:
7642: sub rndseed_32bit {
7643: my ($symb,$courseid,$domain,$username)=@_;
7644: {
7645: use integer;
7646: my $symbchck=unpack("%32C*",$symb) << 27;
7647: my $symbseed=numval($symb) << 22;
7648: my $namechck=unpack("%32C*",$username) << 17;
7649: my $nameseed=numval($username) << 12;
7650: my $domainseed=unpack("%32C*",$domain) << 7;
7651: my $courseseed=unpack("%32C*",$courseid);
7652: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7653: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7654: #&logthis("rndseed :$num:$symb");
7655: if ($_64bit) { $num=(($num<<32)>>32); }
7656: return $num;
7657: }
7658: }
7659:
7660: sub rndseed_64bit {
7661: my ($symb,$courseid,$domain,$username)=@_;
7662: {
7663: use integer;
7664: my $symbchck=unpack("%32S*",$symb) << 21;
7665: my $symbseed=numval($symb) << 10;
7666: my $namechck=unpack("%32S*",$username);
7667:
7668: my $nameseed=numval($username) << 21;
7669: my $domainseed=unpack("%32S*",$domain) << 10;
7670: my $courseseed=unpack("%32S*",$courseid);
7671:
7672: my $num1=$symbchck+$symbseed+$namechck;
7673: my $num2=$nameseed+$domainseed+$courseseed;
7674: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7675: #&logthis("rndseed :$num:$symb");
7676: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7677: return "$num1,$num2";
7678: }
7679: }
7680:
7681: sub rndseed_64bit2 {
7682: my ($symb,$courseid,$domain,$username)=@_;
7683: {
7684: use integer;
7685: # strings need to be an even # of cahracters long, it it is odd the
7686: # last characters gets thrown away
7687: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7688: my $symbseed=numval($symb) << 10;
7689: my $namechck=unpack("%32S*",$username.' ');
7690:
7691: my $nameseed=numval($username) << 21;
7692: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7693: my $courseseed=unpack("%32S*",$courseid.' ');
7694:
7695: my $num1=$symbchck+$symbseed+$namechck;
7696: my $num2=$nameseed+$domainseed+$courseseed;
7697: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7698: #&logthis("rndseed :$num:$symb");
7699: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7700: return "$num1,$num2";
7701: }
7702: }
7703:
7704: sub rndseed_64bit3 {
7705: my ($symb,$courseid,$domain,$username)=@_;
7706: {
7707: use integer;
7708: # strings need to be an even # of cahracters long, it it is odd the
7709: # last characters gets thrown away
7710: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7711: my $symbseed=numval2($symb) << 10;
7712: my $namechck=unpack("%32S*",$username.' ');
7713:
7714: my $nameseed=numval2($username) << 21;
7715: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7716: my $courseseed=unpack("%32S*",$courseid.' ');
7717:
7718: my $num1=$symbchck+$symbseed+$namechck;
7719: my $num2=$nameseed+$domainseed+$courseseed;
7720: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7721: #&logthis("rndseed :$num1:$num2:$_64bit");
7722: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7723:
7724: return "$num1:$num2";
7725: }
7726: }
7727:
7728: sub rndseed_64bit4 {
7729: my ($symb,$courseid,$domain,$username)=@_;
7730: {
7731: use integer;
7732: # strings need to be an even # of cahracters long, it it is odd the
7733: # last characters gets thrown away
7734: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7735: my $symbseed=numval3($symb) << 10;
7736: my $namechck=unpack("%32S*",$username.' ');
7737:
7738: my $nameseed=numval3($username) << 21;
7739: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7740: my $courseseed=unpack("%32S*",$courseid.' ');
7741:
7742: my $num1=$symbchck+$symbseed+$namechck;
7743: my $num2=$nameseed+$domainseed+$courseseed;
7744: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7745: #&logthis("rndseed :$num1:$num2:$_64bit");
7746: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7747:
7748: return "$num1:$num2";
7749: }
7750: }
7751:
7752: sub rndseed_64bit5 {
7753: my ($symb,$courseid,$domain,$username)=@_;
7754: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7755: return "$num1:$num2";
7756: }
7757:
7758: sub rndseed_CODE_64bit {
7759: my ($symb,$courseid,$domain,$username)=@_;
7760: {
7761: use integer;
7762: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7763: my $symbseed=numval2($symb);
7764: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7765: my $CODEseed=numval(&getCODE());
7766: my $courseseed=unpack("%32S*",$courseid.' ');
7767: my $num1=$symbseed+$CODEchck;
7768: my $num2=$CODEseed+$courseseed+$symbchck;
7769: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7770: #&logthis("rndseed :$num1:$num2:$symb");
7771: if ($_64bit) { $num1=(($num1<<32)>>32); }
7772: if ($_64bit) { $num2=(($num2<<32)>>32); }
7773: return "$num1:$num2";
7774: }
7775: }
7776:
7777: sub rndseed_CODE_64bit4 {
7778: my ($symb,$courseid,$domain,$username)=@_;
7779: {
7780: use integer;
7781: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7782: my $symbseed=numval3($symb);
7783: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7784: my $CODEseed=numval3(&getCODE());
7785: my $courseseed=unpack("%32S*",$courseid.' ');
7786: my $num1=$symbseed+$CODEchck;
7787: my $num2=$CODEseed+$courseseed+$symbchck;
7788: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7789: #&logthis("rndseed :$num1:$num2:$symb");
7790: if ($_64bit) { $num1=(($num1<<32)>>32); }
7791: if ($_64bit) { $num2=(($num2<<32)>>32); }
7792: return "$num1:$num2";
7793: }
7794: }
7795:
7796: sub rndseed_CODE_64bit5 {
7797: my ($symb,$courseid,$domain,$username)=@_;
7798: my $code = &getCODE();
7799: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7800: return "$num1:$num2";
7801: }
7802:
7803: sub setup_random_from_rndseed {
7804: my ($rndseed)=@_;
7805: if ($rndseed =~/([,:])/) {
7806: my ($num1,$num2)=split(/[,:]/,$rndseed);
7807: &Math::Random::random_set_seed(abs($num1),abs($num2));
7808: } else {
7809: &Math::Random::random_set_seed_from_phrase($rndseed);
7810: }
7811: }
7812:
7813: sub latest_receipt_algorithm_id {
7814: return 'receipt3';
7815: }
7816:
7817: sub recunique {
7818: my $fucourseid=shift;
7819: my $unique;
7820: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7821: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7822: $unique=$env{"course.$fucourseid.internal.encseed"};
7823: } else {
7824: $unique=$perlvar{'lonReceipt'};
7825: }
7826: return unpack("%32C*",$unique);
7827: }
7828:
7829: sub recprefix {
7830: my $fucourseid=shift;
7831: my $prefix;
7832: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
7833: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7834: $prefix=$env{"course.$fucourseid.internal.encpref"};
7835: } else {
7836: $prefix=$perlvar{'lonHostID'};
7837: }
7838: return unpack("%32C*",$prefix);
7839: }
7840:
7841: sub ireceipt {
7842: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
7843:
7844: my $return =&recprefix($fucourseid).'-';
7845:
7846: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
7847: $env{'request.state'} eq 'construct') {
7848: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
7849: return $return;
7850: }
7851:
7852: my $cuname=unpack("%32C*",$funame);
7853: my $cudom=unpack("%32C*",$fudom);
7854: my $cucourseid=unpack("%32C*",$fucourseid);
7855: my $cusymb=unpack("%32C*",$fusymb);
7856: my $cunique=&recunique($fucourseid);
7857: my $cpart=unpack("%32S*",$part);
7858: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
7859:
7860: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
7861:
7862: $return.= ($cunique%$cuname+
7863: $cunique%$cudom+
7864: $cusymb%$cuname+
7865: $cusymb%$cudom+
7866: $cucourseid%$cuname+
7867: $cucourseid%$cudom+
7868: $cpart%$cuname+
7869: $cpart%$cudom);
7870: } else {
7871: $return.= ($cunique%$cuname+
7872: $cunique%$cudom+
7873: $cusymb%$cuname+
7874: $cusymb%$cudom+
7875: $cucourseid%$cuname+
7876: $cucourseid%$cudom);
7877: }
7878: return $return;
7879: }
7880:
7881: sub receipt {
7882: my ($part)=@_;
7883: my ($symb,$courseid,$domain,$name) = &whichuser();
7884: return &ireceipt($name,$domain,$courseid,$symb,$part);
7885: }
7886:
7887: sub whichuser {
7888: my ($passedsymb)=@_;
7889: my ($symb,$courseid,$domain,$name,$publicuser);
7890: if (defined($env{'form.grade_symb'})) {
7891: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
7892: my $allowed=&allowed('vgr',$tmp_courseid);
7893: if (!$allowed &&
7894: exists($env{'request.course.sec'}) &&
7895: $env{'request.course.sec'} !~ /^\s*$/) {
7896: $allowed=&allowed('vgr',$tmp_courseid.
7897: '/'.$env{'request.course.sec'});
7898: }
7899: if ($allowed) {
7900: ($symb)=&get_env_multiple('form.grade_symb');
7901: $courseid=$tmp_courseid;
7902: ($domain)=&get_env_multiple('form.grade_domain');
7903: ($name)=&get_env_multiple('form.grade_username');
7904: return ($symb,$courseid,$domain,$name,$publicuser);
7905: }
7906: }
7907: if (!$passedsymb) {
7908: $symb=&symbread();
7909: } else {
7910: $symb=$passedsymb;
7911: }
7912: $courseid=$env{'request.course.id'};
7913: $domain=$env{'user.domain'};
7914: $name=$env{'user.name'};
7915: if ($name eq 'public' && $domain eq 'public') {
7916: if (!defined($env{'form.username'})) {
7917: $env{'form.username'}.=time.rand(10000000);
7918: }
7919: $name.=$env{'form.username'};
7920: }
7921: return ($symb,$courseid,$domain,$name,$publicuser);
7922:
7923: }
7924:
7925: # ------------------------------------------------------------ Serves up a file
7926: # returns either the contents of the file or
7927: # -1 if the file doesn't exist
7928: #
7929: # if the target is a file that was uploaded via DOCS,
7930: # a check will be made to see if a current copy exists on the local server,
7931: # if it does this will be served, otherwise a copy will be retrieved from
7932: # the home server for the course and stored in /home/httpd/html/userfiles on
7933: # the local server.
7934:
7935: sub getfile {
7936: my ($file) = @_;
7937: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7938: &repcopy($file);
7939: return &readfile($file);
7940: }
7941:
7942: sub repcopy_userfile {
7943: my ($file)=@_;
7944: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7945: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
7946: my ($cdom,$cnum,$filename) =
7947: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
7948: my $uri="/uploaded/$cdom/$cnum/$filename";
7949: if (-e "$file") {
7950: # we already have a local copy, check it out
7951: my @fileinfo = stat($file);
7952: my $rtncode;
7953: my $info;
7954: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
7955: if ($lwpresp ne 'ok') {
7956: # there is no such file anymore, even though we had a local copy
7957: if ($rtncode eq '404') {
7958: unlink($file);
7959: }
7960: return -1;
7961: }
7962: if ($info < $fileinfo[9]) {
7963: # nice, the file we have is up-to-date, just say okay
7964: return 'ok';
7965: } else {
7966: # the file is outdated, get rid of it
7967: unlink($file);
7968: }
7969: }
7970: # one way or the other, at this point, we don't have the file
7971: # construct the correct path for the file
7972: my @parts = ($cdom,$cnum);
7973: if ($filename =~ m|^(.+)/[^/]+$|) {
7974: push @parts, split(/\//,$1);
7975: }
7976: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
7977: foreach my $part (@parts) {
7978: $path .= '/'.$part;
7979: if (!-e $path) {
7980: mkdir($path,0770);
7981: }
7982: }
7983: # now the path exists for sure
7984: # get a user agent
7985: my $ua=new LWP::UserAgent;
7986: my $transferfile=$file.'.in.transfer';
7987: # FIXME: this should flock
7988: if (-e $transferfile) { return 'ok'; }
7989: my $request;
7990: $uri=~s/^\///;
7991: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
7992: my $response=$ua->request($request,$transferfile);
7993: # did it work?
7994: if ($response->is_error()) {
7995: unlink($transferfile);
7996: &logthis("Userfile repcopy failed for $uri");
7997: return -1;
7998: }
7999: # worked, rename the transfer file
8000: rename($transferfile,$file);
8001: return 'ok';
8002: }
8003:
8004: sub tokenwrapper {
8005: my $uri=shift;
8006: $uri=~s|^http\://([^/]+)||;
8007: $uri=~s|^/||;
8008: $env{'user.environment'}=~/\/([^\/]+)\.id/;
8009: my $token=$1;
8010: my (undef,$udom,$uname,$file)=split('/',$uri,4);
8011: if ($udom && $uname && $file) {
8012: $file=~s|(\?\.*)*$||;
8013: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
8014: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
8015: (($uri=~/\?/)?'&':'?').'token='.$token.
8016: '&tokenissued='.$perlvar{'lonHostID'};
8017: } else {
8018: return '/adm/notfound.html';
8019: }
8020: }
8021:
8022: # call with reqtype HEAD: get last modification time
8023: # call with reqtype GET: get the file contents
8024: # Do not call this with reqtype GET for large files! It loads everything into memory
8025: #
8026: sub getuploaded {
8027: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8028: $uri=~s/^\///;
8029: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
8030: my $ua=new LWP::UserAgent;
8031: my $request=new HTTP::Request($reqtype,$uri);
8032: my $response=$ua->request($request);
8033: $$rtncode = $response->code;
8034: if (! $response->is_success()) {
8035: return 'failed';
8036: }
8037: if ($reqtype eq 'HEAD') {
8038: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8039: } elsif ($reqtype eq 'GET') {
8040: $$info = $response->content;
8041: }
8042: return 'ok';
8043: }
8044:
8045: sub readfile {
8046: my $file = shift;
8047: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8048: my $fh;
8049: open($fh,"<$file");
8050: my $a='';
8051: while (my $line = <$fh>) { $a .= $line; }
8052: return $a;
8053: }
8054:
8055: sub filelocation {
8056: my ($dir,$file) = @_;
8057: my $location;
8058: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8059:
8060: if ($file =~ m-^/adm/-) {
8061: $file=~s-^/adm/wrapper/-/-;
8062: $file=~s-^/adm/coursedocs/showdoc/-/-;
8063: }
8064:
8065: if ($file=~m:^/~:) { # is a contruction space reference
8066: $location = $file;
8067: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8068: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8069: # is a correct contruction space reference
8070: $location = $file;
8071: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8072: my ($udom,$uname,$filename)=
8073: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8074: my $home=&homeserver($uname,$udom);
8075: my $is_me=0;
8076: my @ids=¤t_machine_ids();
8077: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8078: if ($is_me) {
8079: $location=&propath($udom,$uname).
8080: '/userfiles/'.$filename;
8081: } else {
8082: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8083: $udom.'/'.$uname.'/'.$filename;
8084: }
8085: } elsif ($file =~ m-^/adm/-) {
8086: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8087: } else {
8088: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8089: $file=~s:^/res/:/:;
8090: if ( !( $file =~ m:^/:) ) {
8091: $location = $dir. '/'.$file;
8092: } else {
8093: $location = '/home/httpd/html/res'.$file;
8094: }
8095: }
8096: $location=~s://+:/:g; # remove duplicate /
8097: while ($location=~m{/\.\./}) {
8098: if ($location =~ m{/[^/]+/\.\./}) {
8099: $location=~ s{/[^/]+/\.\./}{/}g;
8100: } else {
8101: $location=~ s{/\.\./}{/}g;
8102: }
8103: } #remove dir/..
8104: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8105: return $location;
8106: }
8107:
8108: sub hreflocation {
8109: my ($dir,$file)=@_;
8110: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
8111: $file=filelocation($dir,$file);
8112: } elsif ($file=~m-^/adm/-) {
8113: $file=~s-^/adm/wrapper/-/-;
8114: $file=~s-^/adm/coursedocs/showdoc/-/-;
8115: }
8116: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8117: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8118: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8119: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8120: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8121: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8122: -/uploaded/$1/$2/-x;
8123: }
8124: if ($file=~ m{^/userfiles/}) {
8125: $file =~ s{^/userfiles/}{/uploaded/};
8126: }
8127: return $file;
8128: }
8129:
8130: sub current_machine_domains {
8131: return &machine_domains(&hostname($perlvar{'lonHostID'}));
8132: }
8133:
8134: sub machine_domains {
8135: my ($hostname) = @_;
8136: my @domains;
8137: my %hostname = &all_hostnames();
8138: while( my($id, $name) = each(%hostname)) {
8139: # &logthis("-$id-$name-$hostname-");
8140: if ($hostname eq $name) {
8141: push(@domains,&host_domain($id));
8142: }
8143: }
8144: return @domains;
8145: }
8146:
8147: sub current_machine_ids {
8148: return &machine_ids(&hostname($perlvar{'lonHostID'}));
8149: }
8150:
8151: sub machine_ids {
8152: my ($hostname) = @_;
8153: $hostname ||= &hostname($perlvar{'lonHostID'});
8154: my @ids;
8155: my %name_to_host = &all_names();
8156: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
8157: return @{ $name_to_host{$hostname} };
8158: }
8159: return;
8160: }
8161:
8162: sub additional_machine_domains {
8163: my @domains;
8164: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
8165: while( my $line = <$fh>) {
8166: $line =~ s/\s//g;
8167: push(@domains,$line);
8168: }
8169: return @domains;
8170: }
8171:
8172: sub default_login_domain {
8173: my $domain = $perlvar{'lonDefDomain'};
8174: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
8175: foreach my $posdom (¤t_machine_domains(),
8176: &additional_machine_domains()) {
8177: if (lc($posdom) eq lc($testdomain)) {
8178: $domain=$posdom;
8179: last;
8180: }
8181: }
8182: return $domain;
8183: }
8184:
8185: # ------------------------------------------------------------- Declutters URLs
8186:
8187: sub declutter {
8188: my $thisfn=shift;
8189: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8190: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8191: $thisfn=~s/^\///;
8192: $thisfn=~s|^adm/wrapper/||;
8193: $thisfn=~s|^adm/coursedocs/showdoc/||;
8194: $thisfn=~s/^res\///;
8195: $thisfn=~s/\?.+$//;
8196: return $thisfn;
8197: }
8198:
8199: # ------------------------------------------------------------- Clutter up URLs
8200:
8201: sub clutter {
8202: my $thisfn='/'.&declutter(shift);
8203: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
8204: || $thisfn =~ m{^/adm/(includes|pages)} ) {
8205: $thisfn='/res'.$thisfn;
8206: }
8207: if ($thisfn !~m|/adm|) {
8208: if ($thisfn =~ m|/ext/|) {
8209: $thisfn='/adm/wrapper'.$thisfn;
8210: } else {
8211: my ($ext) = ($thisfn =~ /\.(\w+)$/);
8212: my $embstyle=&Apache::loncommon::fileembstyle($ext);
8213: if ($embstyle eq 'ssi'
8214: || ($embstyle eq 'hdn')
8215: || ($embstyle eq 'rat')
8216: || ($embstyle eq 'prv')
8217: || ($embstyle eq 'ign')) {
8218: #do nothing with these
8219: } elsif (($embstyle eq 'img')
8220: || ($embstyle eq 'emb')
8221: || ($embstyle eq 'wrp')) {
8222: $thisfn='/adm/wrapper'.$thisfn;
8223: } elsif ($embstyle eq 'unk'
8224: && $thisfn!~/\.(sequence|page)$/) {
8225: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
8226: } else {
8227: # &logthis("Got a blank emb style");
8228: }
8229: }
8230: }
8231: return $thisfn;
8232: }
8233:
8234: sub clutter_with_no_wrapper {
8235: my $uri = &clutter(shift);
8236: if ($uri =~ m-^/adm/-) {
8237: $uri =~ s-^/adm/wrapper/-/-;
8238: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
8239: }
8240: return $uri;
8241: }
8242:
8243: sub freeze_escape {
8244: my ($value)=@_;
8245: if (ref($value)) {
8246: $value=&nfreeze($value);
8247: return '__FROZEN__'.&escape($value);
8248: }
8249: return &escape($value);
8250: }
8251:
8252:
8253: sub thaw_unescape {
8254: my ($value)=@_;
8255: if ($value =~ /^__FROZEN__/) {
8256: substr($value,0,10,undef);
8257: $value=&unescape($value);
8258: return &thaw($value);
8259: }
8260: return &unescape($value);
8261: }
8262:
8263: sub correct_line_ends {
8264: my ($result)=@_;
8265: $$result =~s/\r\n/\n/mg;
8266: $$result =~s/\r/\n/mg;
8267: }
8268: # ================================================================ Main Program
8269:
8270: sub goodbye {
8271: &logthis("Starting Shut down");
8272: #not converted to using infrastruture and probably shouldn't be
8273: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
8274: #converted
8275: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
8276: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
8277: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
8278: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
8279: #1.1 only
8280: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
8281: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
8282: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
8283: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
8284: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
8285: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
8286: &logthis(sprintf("%-20s is %s",'hits',$hits));
8287: &flushcourselogs();
8288: &logthis("Shutting down");
8289: }
8290:
8291: sub get_dns {
8292: my ($url,$func,$ignore_cache) = @_;
8293: if (!$ignore_cache) {
8294: my ($content,$cached)=
8295: &Apache::lonnet::is_cached_new('dns',$url);
8296: if ($cached) {
8297: &$func($content);
8298: return;
8299: }
8300: }
8301:
8302: my %alldns;
8303: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8304: foreach my $dns (<$config>) {
8305: next if ($dns !~ /^\^(\S*)/x);
8306: $alldns{$1} = 1;
8307: }
8308: while (%alldns) {
8309: my ($dns) = keys(%alldns);
8310: delete($alldns{$dns});
8311: my $ua=new LWP::UserAgent;
8312: my $request=new HTTP::Request('GET',"http://$dns$url");
8313: my $response=$ua->request($request);
8314: next if ($response->is_error());
8315: my @content = split("\n",$response->content);
8316: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
8317: &$func(\@content);
8318: return;
8319: }
8320: close($config);
8321: my $which = (split('/',$url))[3];
8322: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
8323: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
8324: my @content = <$config>;
8325: &$func(\@content);
8326: return;
8327: }
8328: # ------------------------------------------------------------ Read domain file
8329: {
8330: my $loaded;
8331: my %domain;
8332:
8333: sub parse_domain_tab {
8334: my ($lines) = @_;
8335: foreach my $line (@$lines) {
8336: next if ($line =~ /^(\#|\s*$ )/x);
8337:
8338: chomp($line);
8339: my ($name,@elements) = split(/:/,$line,9);
8340: my %this_domain;
8341: foreach my $field ('description', 'auth_def', 'auth_arg_def',
8342: 'lang_def', 'city', 'longi', 'lati',
8343: 'primary') {
8344: $this_domain{$field} = shift(@elements);
8345: }
8346: $domain{$name} = \%this_domain;
8347: }
8348: }
8349:
8350: sub reset_domain_info {
8351: undef($loaded);
8352: undef(%domain);
8353: }
8354:
8355: sub load_domain_tab {
8356: my ($ignore_cache) = @_;
8357: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
8358: my $fh;
8359: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
8360: my @lines = <$fh>;
8361: &parse_domain_tab(\@lines);
8362: }
8363: close($fh);
8364: $loaded = 1;
8365: }
8366:
8367: sub domain {
8368: &load_domain_tab() if (!$loaded);
8369:
8370: my ($name,$what) = @_;
8371: return if ( !exists($domain{$name}) );
8372:
8373: if (!$what) {
8374: return $domain{$name}{'description'};
8375: }
8376: return $domain{$name}{$what};
8377: }
8378: }
8379:
8380:
8381: # ------------------------------------------------------------- Read hosts file
8382: {
8383: my %hostname;
8384: my %hostdom;
8385: my %libserv;
8386: my $loaded;
8387: my %name_to_host;
8388:
8389: sub parse_hosts_tab {
8390: my ($file) = @_;
8391: foreach my $configline (@$file) {
8392: next if ($configline =~ /^(\#|\s*$ )/x);
8393: next if ($configline =~ /^\^/);
8394: chomp($configline);
8395: my ($id,$domain,$role,$name)=split(/:/,$configline);
8396: $name=~s/\s//g;
8397: if ($id && $domain && $role && $name) {
8398: $hostname{$id}=$name;
8399: push(@{$name_to_host{$name}}, $id);
8400: $hostdom{$id}=$domain;
8401: if ($role eq 'library') { $libserv{$id}=$name; }
8402: }
8403: }
8404: }
8405:
8406: sub reset_hosts_info {
8407: &purge_remembered();
8408: &reset_domain_info();
8409: &reset_hosts_ip_info();
8410: undef(%name_to_host);
8411: undef(%hostname);
8412: undef(%hostdom);
8413: undef(%libserv);
8414: undef($loaded);
8415: }
8416:
8417: sub load_hosts_tab {
8418: my ($ignore_cache) = @_;
8419: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
8420: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8421: my @config = <$config>;
8422: &parse_hosts_tab(\@config);
8423: close($config);
8424: $loaded=1;
8425: }
8426:
8427: sub hostname {
8428: &load_hosts_tab() if (!$loaded);
8429:
8430: my ($lonid) = @_;
8431: return $hostname{$lonid};
8432: }
8433:
8434: sub all_hostnames {
8435: &load_hosts_tab() if (!$loaded);
8436:
8437: return %hostname;
8438: }
8439:
8440: sub all_names {
8441: &load_hosts_tab() if (!$loaded);
8442:
8443: return %name_to_host;
8444: }
8445:
8446: sub is_library {
8447: &load_hosts_tab() if (!$loaded);
8448:
8449: return exists($libserv{$_[0]});
8450: }
8451:
8452: sub all_library {
8453: &load_hosts_tab() if (!$loaded);
8454:
8455: return %libserv;
8456: }
8457:
8458: sub get_servers {
8459: &load_hosts_tab() if (!$loaded);
8460:
8461: my ($domain,$type) = @_;
8462: my %possible_hosts = ($type eq 'library') ? %libserv
8463: : %hostname;
8464: my %result;
8465: if (ref($domain) eq 'ARRAY') {
8466: while ( my ($host,$hostname) = each(%possible_hosts)) {
8467: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
8468: $result{$host} = $hostname;
8469: }
8470: }
8471: } else {
8472: while ( my ($host,$hostname) = each(%possible_hosts)) {
8473: if ($hostdom{$host} eq $domain) {
8474: $result{$host} = $hostname;
8475: }
8476: }
8477: }
8478: return %result;
8479: }
8480:
8481: sub host_domain {
8482: &load_hosts_tab() if (!$loaded);
8483:
8484: my ($lonid) = @_;
8485: return $hostdom{$lonid};
8486: }
8487:
8488: sub all_domains {
8489: &load_hosts_tab() if (!$loaded);
8490:
8491: my %seen;
8492: my @uniq = grep(!$seen{$_}++, values(%hostdom));
8493: return @uniq;
8494: }
8495: }
8496:
8497: {
8498: my %iphost;
8499: my %name_to_ip;
8500: my %lonid_to_ip;
8501:
8502: sub get_hosts_from_ip {
8503: my ($ip) = @_;
8504: my %iphosts = &get_iphost();
8505: if (ref($iphosts{$ip})) {
8506: return @{$iphosts{$ip}};
8507: }
8508: return;
8509: }
8510:
8511: sub reset_hosts_ip_info {
8512: undef(%iphost);
8513: undef(%name_to_ip);
8514: undef(%lonid_to_ip);
8515: }
8516:
8517: sub get_host_ip {
8518: my ($lonid) = @_;
8519: if (exists($lonid_to_ip{$lonid})) {
8520: return $lonid_to_ip{$lonid};
8521: }
8522: my $name=&hostname($lonid);
8523: my $ip = gethostbyname($name);
8524: return if (!$ip || length($ip) ne 4);
8525: $ip=inet_ntoa($ip);
8526: $name_to_ip{$name} = $ip;
8527: $lonid_to_ip{$lonid} = $ip;
8528: return $ip;
8529: }
8530:
8531: sub get_iphost {
8532: my ($ignore_cache) = @_;
8533:
8534: if (!$ignore_cache) {
8535: if (%iphost) {
8536: return %iphost;
8537: }
8538: my ($ip_info,$cached)=
8539: &Apache::lonnet::is_cached_new('iphost','iphost');
8540: if ($cached) {
8541: %iphost = %{$ip_info->[0]};
8542: %name_to_ip = %{$ip_info->[1]};
8543: %lonid_to_ip = %{$ip_info->[2]};
8544: return %iphost;
8545: }
8546: }
8547:
8548: # get yesterday's info for fallback
8549: my %old_name_to_ip;
8550: my ($ip_info,$cached)=
8551: &Apache::lonnet::is_cached_new('iphost','iphost');
8552: if ($cached) {
8553: %old_name_to_ip = %{$ip_info->[1]};
8554: }
8555:
8556: my %name_to_host = &all_names();
8557: foreach my $name (keys(%name_to_host)) {
8558: my $ip;
8559: if (!exists($name_to_ip{$name})) {
8560: $ip = gethostbyname($name);
8561: if (!$ip || length($ip) ne 4) {
8562: if (defined($old_name_to_ip{$name})) {
8563: $ip = $old_name_to_ip{$name};
8564: &logthis("Can't find $name defaulting to old $ip");
8565: } else {
8566: &logthis("Name $name no IP found");
8567: next;
8568: }
8569: } else {
8570: $ip=inet_ntoa($ip);
8571: }
8572: $name_to_ip{$name} = $ip;
8573: } else {
8574: $ip = $name_to_ip{$name};
8575: }
8576: foreach my $id (@{ $name_to_host{$name} }) {
8577: $lonid_to_ip{$id} = $ip;
8578: }
8579: push(@{$iphost{$ip}},@{$name_to_host{$name}});
8580: }
8581: &Apache::lonnet::do_cache_new('iphost','iphost',
8582: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8583: 48*60*60);
8584:
8585: return %iphost;
8586: }
8587: }
8588:
8589: BEGIN {
8590:
8591: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8592: unless ($readit) {
8593: {
8594: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8595: %perlvar = (%perlvar,%{$configvars});
8596: }
8597:
8598:
8599: # ------------------------------------------------------ Read spare server file
8600: {
8601: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8602:
8603: while (my $configline=<$config>) {
8604: chomp($configline);
8605: if ($configline) {
8606: my ($host,$type) = split(':',$configline,2);
8607: if (!defined($type) || $type eq '') { $type = 'default' };
8608: push(@{ $spareid{$type} }, $host);
8609: }
8610: }
8611: close($config);
8612: }
8613: # ------------------------------------------------------------ Read permissions
8614: {
8615: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8616:
8617: while (my $configline=<$config>) {
8618: chomp($configline);
8619: if ($configline) {
8620: my ($role,$perm)=split(/ /,$configline);
8621: if ($perm ne '') { $pr{$role}=$perm; }
8622: }
8623: }
8624: close($config);
8625: }
8626:
8627: # -------------------------------------------- Read plain texts for permissions
8628: {
8629: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8630:
8631: while (my $configline=<$config>) {
8632: chomp($configline);
8633: if ($configline) {
8634: my ($short,@plain)=split(/:/,$configline);
8635: %{$prp{$short}} = ();
8636: if (@plain > 0) {
8637: $prp{$short}{'std'} = $plain[0];
8638: for (my $i=1; $i<@plain; $i++) {
8639: $prp{$short}{'alt'.$i} = $plain[$i];
8640: }
8641: }
8642: }
8643: }
8644: close($config);
8645: }
8646:
8647: # ---------------------------------------------------------- Read package table
8648: {
8649: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8650:
8651: while (my $configline=<$config>) {
8652: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8653: chomp($configline);
8654: my ($short,$plain)=split(/:/,$configline);
8655: my ($pack,$name)=split(/\&/,$short);
8656: if ($plain ne '') {
8657: $packagetab{$pack.'&'.$name.'&name'}=$name;
8658: $packagetab{$short}=$plain;
8659: }
8660: }
8661: close($config);
8662: }
8663:
8664: # ------------- set up temporary directory
8665: {
8666: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8667:
8668: }
8669:
8670: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8671: 'compress_threshold'=> 20_000,
8672: });
8673:
8674: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8675: $dumpcount=0;
8676:
8677: &logtouch();
8678: &logthis('<font color="yellow">INFO: Read configuration</font>');
8679: $readit=1;
8680: {
8681: use integer;
8682: my $test=(2**32)+1;
8683: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8684: &logthis(" Detected 64bit platform ($_64bit)");
8685: }
8686: }
8687: }
8688:
8689: 1;
8690: __END__
8691:
8692: =pod
8693:
8694: =head1 NAME
8695:
8696: Apache::lonnet - Subroutines to ask questions about things in the network.
8697:
8698: =head1 SYNOPSIS
8699:
8700: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8701:
8702: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8703:
8704: Common parameters:
8705:
8706: =over 4
8707:
8708: =item *
8709:
8710: $uname : an internal username (if $cname expecting a course Id specifically)
8711:
8712: =item *
8713:
8714: $udom : a domain (if $cdom expecting a course's domain specifically)
8715:
8716: =item *
8717:
8718: $symb : a resource instance identifier
8719:
8720: =item *
8721:
8722: $namespace : the name of a .db file that contains the data needed or
8723: being set.
8724:
8725: =back
8726:
8727: =head1 OVERVIEW
8728:
8729: lonnet provides subroutines which interact with the
8730: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8731: about classes, users, and resources.
8732:
8733: For many of these objects you can also use this to store data about
8734: them or modify them in various ways.
8735:
8736: =head2 Symbs
8737:
8738: To identify a specific instance of a resource, LON-CAPA uses symbols
8739: or "symbs"X<symb>. These identifiers are built from the URL of the
8740: map, the resource number of the resource in the map, and the URL of
8741: the resource itself. The latter is somewhat redundant, but might help
8742: if maps change.
8743:
8744: An example is
8745:
8746: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8747:
8748: The respective map entry is
8749:
8750: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8751: title="Problem 2">
8752: </resource>
8753:
8754: Symbs are used by the random number generator, as well as to store and
8755: restore data specific to a certain instance of for example a problem.
8756:
8757: =head2 Storing And Retrieving Data
8758:
8759: X<store()>X<cstore()>X<restore()>Three of the most important functions
8760: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8761: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8762: is is the non-critical message twin of cstore. These functions are for
8763: handlers to store a perl hash to a user's permanent data space in an
8764: easy manner, and to retrieve it again on another call. It is expected
8765: that a handler would use this once at the beginning to retrieve data,
8766: and then again once at the end to send only the new data back.
8767:
8768: The data is stored in the user's data directory on the user's
8769: homeserver under the ID of the course.
8770:
8771: The hash that is returned by restore will have all of the previous
8772: value for all of the elements of the hash.
8773:
8774: Example:
8775:
8776: #creating a hash
8777: my %hash;
8778: $hash{'foo'}='bar';
8779:
8780: #storing it
8781: &Apache::lonnet::cstore(\%hash);
8782:
8783: #changing a value
8784: $hash{'foo'}='notbar';
8785:
8786: #adding a new value
8787: $hash{'bar'}='foo';
8788: &Apache::lonnet::cstore(\%hash);
8789:
8790: #retrieving the hash
8791: my %history=&Apache::lonnet::restore();
8792:
8793: #print the hash
8794: foreach my $key (sort(keys(%history))) {
8795: print("\%history{$key} = $history{$key}");
8796: }
8797:
8798: Will print out:
8799:
8800: %history{1:foo} = bar
8801: %history{1:keys} = foo:timestamp
8802: %history{1:timestamp} = 990455579
8803: %history{2:bar} = foo
8804: %history{2:foo} = notbar
8805: %history{2:keys} = foo:bar:timestamp
8806: %history{2:timestamp} = 990455580
8807: %history{bar} = foo
8808: %history{foo} = notbar
8809: %history{timestamp} = 990455580
8810: %history{version} = 2
8811:
8812: Note that the special hash entries C<keys>, C<version> and
8813: C<timestamp> were added to the hash. C<version> will be equal to the
8814: total number of versions of the data that have been stored. The
8815: C<timestamp> attribute will be the UNIX time the hash was
8816: stored. C<keys> is available in every historical section to list which
8817: keys were added or changed at a specific historical revision of a
8818: hash.
8819:
8820: B<Warning>: do not store the hash that restore returns directly. This
8821: will cause a mess since it will restore the historical keys as if the
8822: were new keys. I.E. 1:foo will become 1:1:foo etc.
8823:
8824: Calling convention:
8825:
8826: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
8827: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
8828:
8829: For more detailed information, see lonnet specific documentation.
8830:
8831: =head1 RETURN MESSAGES
8832:
8833: =over 4
8834:
8835: =item * B<con_lost>: unable to contact remote host
8836:
8837: =item * B<con_delayed>: unable to contact remote host, message will be delivered
8838: when the connection is brought back up
8839:
8840: =item * B<con_failed>: unable to contact remote host and unable to save message
8841: for later delivery
8842:
8843: =item * B<error:>: an error a occured, a description of the error follows the :
8844:
8845: =item * B<no_such_host>: unable to fund a host associated with the user/domain
8846: that was requested
8847:
8848: =back
8849:
8850: =head1 PUBLIC SUBROUTINES
8851:
8852: =head2 Session Environment Functions
8853:
8854: =over 4
8855:
8856: =item *
8857: X<appenv()>
8858: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
8859: the user envirnoment file, and will be restored for each access this
8860: user makes during this session, also modifies the %env for the current
8861: process. Optional rolesarrayref - if defined contains a reference to an array
8862: of roles which are exempt from the restriction on modifying user.role entries
8863: in the user's environment.db and in %env.
8864:
8865: =item *
8866: X<delenv()>
8867: B<delenv($regexp)>: removes all items from the session
8868: environment file that matches the regular expression in $regexp. The
8869: values are also delted from the current processes %env.
8870:
8871: =item * get_env_multiple($name)
8872:
8873: gets $name from the %env hash, it seemlessly handles the cases where multiple
8874: values may be defined and end up as an array ref.
8875:
8876: returns an array of values
8877:
8878: =back
8879:
8880: =head2 User Information
8881:
8882: =over 4
8883:
8884: =item *
8885: X<queryauthenticate()>
8886: B<queryauthenticate($uname,$udom)>: try to determine user's current
8887: authentication scheme
8888:
8889: =item *
8890: X<authenticate()>
8891: B<authenticate($uname,$upass,$udom)>: try to
8892: authenticate user from domain's lib servers (first use the current
8893: one). C<$upass> should be the users password.
8894:
8895: =item *
8896: X<homeserver()>
8897: B<homeserver($uname,$udom)>: find the server which has
8898: the user's directory and files (there must be only one), this caches
8899: the answer, and also caches if there is a borken connection.
8900:
8901: =item *
8902: X<idget()>
8903: B<idget($udom,@ids)>: find the usernames behind a list of IDs
8904: (IDs are a unique resource in a domain, there must be only 1 ID per
8905: username, and only 1 username per ID in a specific domain) (returns
8906: hash: id=>name,id=>name)
8907:
8908: =item *
8909: X<idrget()>
8910: B<idrget($udom,@unames)>: find the IDs behind a list of
8911: usernames (returns hash: name=>id,name=>id)
8912:
8913: =item *
8914: X<idput()>
8915: B<idput($udom,%ids)>: store away a list of names and associated IDs
8916:
8917: =item *
8918: X<rolesinit()>
8919: B<rolesinit($udom,$username,$authhost)>: get user privileges
8920:
8921: =item *
8922: X<getsection()>
8923: B<getsection($udom,$uname,$cname)>: finds the section of student in the
8924: course $cname, return section name/number or '' for "not in course"
8925: and '-1' for "no section"
8926:
8927: =item *
8928: X<userenvironment()>
8929: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
8930: passed in @what from the requested user's environment, returns a hash
8931:
8932: =item *
8933: X<userlog_query()>
8934: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
8935: activity.log file. %filters defines filters applied when parsing the
8936: log file. These can be start or end timestamps, or the type of action
8937: - log to look for Login or Logout events, check for Checkin or
8938: Checkout, role for role selection. The response is in the form
8939: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
8940: escaped strings of the action recorded in the activity.log file.
8941:
8942: =back
8943:
8944: =head2 User Roles
8945:
8946: =over 4
8947:
8948: =item *
8949:
8950: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
8951: F: full access
8952: U,I,K: authentication modes (cxx only)
8953: '': forbidden
8954: 1: user needs to choose course
8955: 2: browse allowed
8956: A: passphrase authentication needed
8957:
8958: =item *
8959:
8960: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
8961: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
8962: and course level
8963:
8964: =item *
8965:
8966: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
8967: explanation of a user role term
8968:
8969: =item *
8970:
8971: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
8972: All arguments are optional. Returns a hash of a roles, either for
8973: co-author/assistant author roles for a user's Construction Space
8974: (default), or if $context is 'userroles', roles for the user himself,
8975: In the hash, keys are set to colon-separated $uname,$udom,$role, and
8976: (optionally) if $withsec is true, a fourth colon-separated item - $section.
8977: For each key, value is set to colon-separated start and end times for
8978: the role. If no username and domain are specified, will default to
8979: current user/domain. Types, roles, and roledoms are references to arrays
8980: of role statuses (active, future or previous), roles
8981: (e.g., cc,in, st etc.) and domains of the roles which can be used
8982: to restrict the list of roles reported. If no array ref is
8983: provided for types, will default to return only active roles.
8984:
8985: =back
8986:
8987: =head2 User Modification
8988:
8989: =over 4
8990:
8991: =item *
8992:
8993: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
8994: user for the level given by URL. Optional start and end dates (leave empty
8995: string or zero for "no date")
8996:
8997: =item *
8998:
8999: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
9000: change a users, password, possible return values are: ok,
9001: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
9002: refused
9003:
9004: =item *
9005:
9006: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
9007:
9008: =item *
9009:
9010: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
9011: modify user
9012:
9013: =item *
9014:
9015: modifystudent
9016:
9017: modify a students enrollment and identification information.
9018: The course id is resolved based on the current users environment.
9019: This means the envoking user must be a course coordinator or otherwise
9020: associated with a course.
9021:
9022: This call is essentially a wrapper for lonnet::modifyuser and
9023: lonnet::modify_student_enrollment
9024:
9025: Inputs:
9026:
9027: =over 4
9028:
9029: =item B<$udom> Students loncapa domain
9030:
9031: =item B<$uname> Students loncapa login name
9032:
9033: =item B<$uid> Students id/student number
9034:
9035: =item B<$umode> Students authentication mode
9036:
9037: =item B<$upass> Students password
9038:
9039: =item B<$first> Students first name
9040:
9041: =item B<$middle> Students middle name
9042:
9043: =item B<$last> Students last name
9044:
9045: =item B<$gene> Students generation
9046:
9047: =item B<$usec> Students section in course
9048:
9049: =item B<$end> Unix time of the roles expiration
9050:
9051: =item B<$start> Unix time of the roles start date
9052:
9053: =item B<$forceid> If defined, allow $uid to be changed
9054:
9055: =item B<$desiredhome> server to use as home server for student
9056:
9057: =back
9058:
9059: =item *
9060:
9061: modify_student_enrollment
9062:
9063: Change a students enrollment status in a class. The environment variable
9064: 'role.request.course' must be defined for this function to proceed.
9065:
9066: Inputs:
9067:
9068: =over 4
9069:
9070: =item $udom, students domain
9071:
9072: =item $uname, students name
9073:
9074: =item $uid, students user id
9075:
9076: =item $first, students first name
9077:
9078: =item $middle
9079:
9080: =item $last
9081:
9082: =item $gene
9083:
9084: =item $usec
9085:
9086: =item $end
9087:
9088: =item $start
9089:
9090: =back
9091:
9092:
9093: =item *
9094:
9095: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
9096: custom role; give a custom role to a user for the level given by URL. Specify
9097: name and domain of role author, and role name
9098:
9099: =item *
9100:
9101: revokerole($udom,$uname,$url,$role) : revoke a role for url
9102:
9103: =item *
9104:
9105: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
9106:
9107: =back
9108:
9109: =head2 Course Infomation
9110:
9111: =over 4
9112:
9113: =item *
9114:
9115: coursedescription($courseid) : returns a hash of information about the
9116: specified course id, including all environment settings for the
9117: course, the description of the course will be in the hash under the
9118: key 'description'
9119:
9120: =item *
9121:
9122: resdata($name,$domain,$type,@which) : request for current parameter
9123: setting for a specific $type, where $type is either 'course' or 'user',
9124: @what should be a list of parameters to ask about. This routine caches
9125: answers for 5 minutes.
9126:
9127: =item *
9128:
9129: get_courseresdata($courseid, $domain) : dump the entire course resource
9130: data base, returning a hash that is keyed by the resource name and has
9131: values that are the resource value. I believe that the timestamps and
9132: versions are also returned.
9133:
9134:
9135: =back
9136:
9137: =head2 Course Modification
9138:
9139: =over 4
9140:
9141: =item *
9142:
9143: writecoursepref($courseid,%prefs) : write preferences (environment
9144: database) for a course
9145:
9146: =item *
9147:
9148: createcourse($udom,$description,$url) : make/modify course
9149:
9150: =back
9151:
9152: =head2 Resource Subroutines
9153:
9154: =over 4
9155:
9156: =item *
9157:
9158: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
9159:
9160: =item *
9161:
9162: repcopy($filename) : subscribes to the requested file, and attempts to
9163: replicate from the owning library server, Might return
9164: 'unavailable', 'not_found', 'forbidden', 'ok', or
9165: 'bad_request', also attempts to grab the metadata for the
9166: resource. Expects the local filesystem pathname
9167: (/home/httpd/html/res/....)
9168:
9169: =back
9170:
9171: =head2 Resource Information
9172:
9173: =over 4
9174:
9175: =item *
9176:
9177: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
9178: a vairety of different possible values, $varname should be a request
9179: string, and the other parameters can be used to specify who and what
9180: one is asking about.
9181:
9182: Possible values for $varname are environment.lastname (or other item
9183: from the envirnment hash), user.name (or someother aspect about the
9184: user), resource.0.maxtries (or some other part and parameter of a
9185: resource)
9186:
9187: =item *
9188:
9189: directcondval($number) : get current value of a condition; reads from a state
9190: string
9191:
9192: =item *
9193:
9194: condval($condidx) : value of condition index based on state
9195:
9196: =item *
9197:
9198: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
9199: resource's metadata, $what should be either a specific key, or either
9200: 'keys' (to get a list of possible keys) or 'packages' to get a list of
9201: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
9202:
9203: this function automatically caches all requests
9204:
9205: =item *
9206:
9207: metadata_query($query,$custom,$customshow) : make a metadata query against the
9208: network of library servers; returns file handle of where SQL and regex results
9209: will be stored for query
9210:
9211: =item *
9212:
9213: symbread($filename) : return symbolic list entry (filename argument optional);
9214: returns the data handle
9215:
9216: =item *
9217:
9218: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
9219: a possible symb for the URL in $thisfn, and if is an encryypted
9220: resource that the user accessed using /enc/ returns a 1 on success, 0
9221: on failure, user must be in a course, as it assumes the existance of
9222: the course initial hash, and uses $env('request.course.id'}
9223:
9224:
9225: =item *
9226:
9227: symbclean($symb) : removes versions numbers from a symb, returns the
9228: cleaned symb
9229:
9230: =item *
9231:
9232: is_on_map($uri) : checks if the $uri is somewhere on the current
9233: course map, user must be in a course for it to work.
9234:
9235: =item *
9236:
9237: numval($salt) : return random seed value (addend for rndseed)
9238:
9239: =item *
9240:
9241: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
9242: a random seed, all arguments are optional, if they aren't sent it uses the
9243: environment to derive them. Note: if symb isn't sent and it can't get one
9244: from &symbread it will use the current time as its return value
9245:
9246: =item *
9247:
9248: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
9249: unfakeable, receipt
9250:
9251: =item *
9252:
9253: receipt() : API to ireceipt working off of env values; given out to users
9254:
9255: =item *
9256:
9257: countacc($url) : count the number of accesses to a given URL
9258:
9259: =item *
9260:
9261: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
9262:
9263: =item *
9264:
9265: checkin($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 $tcrsid)
9266:
9267: =item *
9268:
9269: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
9270:
9271: =item *
9272:
9273: devalidate($symb) : devalidate temporary spreadsheet calculations,
9274: forcing spreadsheet to reevaluate the resource scores next time.
9275:
9276: =back
9277:
9278: =head2 Storing/Retreiving Data
9279:
9280: =over 4
9281:
9282: =item *
9283:
9284: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
9285: for this url; hashref needs to be given and should be a \%hashname; the
9286: remaining args aren't required and if they aren't passed or are '' they will
9287: be derived from the env
9288:
9289: =item *
9290:
9291: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
9292: uses critical subroutine
9293:
9294: =item *
9295:
9296: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
9297: all args are optional
9298:
9299: =item *
9300:
9301: dumpstore($namespace,$udom,$uname,$regexp,$range) :
9302: dumps the complete (or key matching regexp) namespace into a hash
9303: ($udom, $uname, $regexp, $range are optional) for a namespace that is
9304: normally &store()ed into
9305:
9306: $range should be either an integer '100' (give me the first 100
9307: matching records)
9308: or be two integers sperated by a - with no spaces
9309: '30-50' (give me the 30th through the 50th matching
9310: records)
9311:
9312:
9313: =item *
9314:
9315: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
9316: replaces a &store() version of data with a replacement set of data
9317: for a particular resource in a namespace passed in the $storehash hash
9318: reference
9319:
9320: =item *
9321:
9322: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
9323: works very similar to store/cstore, but all data is stored in a
9324: temporary location and can be reset using tmpreset, $storehash should
9325: be a hash reference, returns nothing on success
9326:
9327: =item *
9328:
9329: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
9330: similar to restore, but all data is stored in a temporary location and
9331: can be reset using tmpreset. Returns a hash of values on success,
9332: error string otherwise.
9333:
9334: =item *
9335:
9336: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
9337: deltes all keys for $symb form the temporary storage hash.
9338:
9339: =item *
9340:
9341: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9342: reference filled in from namesp ($udom and $uname are optional)
9343:
9344: =item *
9345:
9346: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
9347: namesp ($udom and $uname are optional)
9348:
9349: =item *
9350:
9351: dump($namespace,$udom,$uname,$regexp,$range) :
9352: dumps the complete (or key matching regexp) namespace into a hash
9353: ($udom, $uname, $regexp, $range are optional)
9354:
9355: $range should be either an integer '100' (give me the first 100
9356: matching records)
9357: or be two integers sperated by a - with no spaces
9358: '30-50' (give me the 30th through the 50th matching
9359: records)
9360: =item *
9361:
9362: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
9363: $store can be a scalar, an array reference, or if the amount to be
9364: incremented is > 1, a hash reference.
9365:
9366: ($udom and $uname are optional)
9367:
9368: =item *
9369:
9370: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
9371: ($udom and $uname are optional)
9372:
9373: =item *
9374:
9375: cput($namespace,$storehash,$udom,$uname) : critical put
9376: ($udom and $uname are optional)
9377:
9378: =item *
9379:
9380: newput($namespace,$storehash,$udom,$uname) :
9381:
9382: Attempts to store the items in the $storehash, but only if they don't
9383: currently exist, if this succeeds you can be certain that you have
9384: successfully created a new key value pair in the $namespace db.
9385:
9386:
9387: Args:
9388: $namespace: name of database to store values to
9389: $storehash: hashref to store to the db
9390: $udom: (optional) domain of user containing the db
9391: $uname: (optional) name of user caontaining the db
9392:
9393: Returns:
9394: 'ok' -> succeeded in storing all keys of $storehash
9395: 'key_exists: <key>' -> failed to anything out of $storehash, as at
9396: least <key> already existed in the db (other
9397: requested keys may also already exist)
9398: 'error: <msg>' -> unable to tie the DB or other erorr occured
9399: 'con_lost' -> unable to contact request server
9400: 'refused' -> action was not allowed by remote machine
9401:
9402:
9403: =item *
9404:
9405: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9406: reference filled in from namesp (encrypts the return communication)
9407: ($udom and $uname are optional)
9408:
9409: =item *
9410:
9411: log($udom,$name,$home,$message) : write to permanent log for user; use
9412: critical subroutine
9413:
9414: =item *
9415:
9416: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
9417: array reference filled in from namespace found in domain level on either
9418: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
9419:
9420: =item *
9421:
9422: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
9423: domain level either on specified domain server ($uhome) or primary domain
9424: server ($udom and $uhome are optional)
9425:
9426: =item *
9427:
9428: get_domain_defaults($target_domain) : returns hash with defaults for
9429: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
9430: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
9431: or localauth), initial password or a kerberos realm, language (e.g., en-us).
9432: Values are retrieved from cache (if current), or from domain's configuration.db
9433: (if available), or lastly from values in lonTabs/dns_domain,tab,
9434: or lonTabs/domain.tab.
9435:
9436: %domdefaults = &get_auth_defaults($target_domain);
9437:
9438: =back
9439:
9440: =head2 Network Status Functions
9441:
9442: =over 4
9443:
9444: =item *
9445:
9446: dirlist($uri) : return directory list based on URI
9447:
9448: =item *
9449:
9450: spareserver() : find server with least workload from spare.tab
9451:
9452: =back
9453:
9454: =head2 Apache Request
9455:
9456: =over 4
9457:
9458: =item *
9459:
9460: ssi($url,%hash) : server side include, does a complete request cycle on url to
9461: localhost, posts hash
9462:
9463: =back
9464:
9465: =head2 Data to String to Data
9466:
9467: =over 4
9468:
9469: =item *
9470:
9471: hash2str(%hash) : convert a hash into a string complete with escaping and '='
9472: and '&' separators, supports elements that are arrayrefs and hashrefs
9473:
9474: =item *
9475:
9476: hashref2str($hashref) : convert a hashref into a string complete with
9477: escaping and '=' and '&' separators, supports elements that are
9478: arrayrefs and hashrefs
9479:
9480: =item *
9481:
9482: arrayref2str($arrayref) : convert an arrayref into a string complete
9483: with escaping and '&' separators, supports elements that are arrayrefs
9484: and hashrefs
9485:
9486: =item *
9487:
9488: str2hash($string) : convert string to hash using unescaping and
9489: splitting on '=' and '&', supports elements that are arrayrefs and
9490: hashrefs
9491:
9492: =item *
9493:
9494: str2array($string) : convert string to hash using unescaping and
9495: splitting on '&', supports elements that are arrayrefs and hashrefs
9496:
9497: =back
9498:
9499: =head2 Logging Routines
9500:
9501: =over 4
9502:
9503: These routines allow one to make log messages in the lonnet.log and
9504: lonnet.perm logfiles.
9505:
9506: =item *
9507:
9508: logtouch() : make sure the logfile, lonnet.log, exists
9509:
9510: =item *
9511:
9512: logthis() : append message to the normal lonnet.log file, it gets
9513: preiodically rolled over and deleted.
9514:
9515: =item *
9516:
9517: logperm() : append a permanent message to lonnet.perm.log, this log
9518: file never gets deleted by any automated portion of the system, only
9519: messages of critical importance should go in here.
9520:
9521: =back
9522:
9523: =head2 General File Helper Routines
9524:
9525: =over 4
9526:
9527: =item *
9528:
9529: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
9530: (a) files in /uploaded
9531: (i) If a local copy of the file exists -
9532: compares modification date of local copy with last-modified date for
9533: definitive version stored on home server for course. If local copy is
9534: stale, requests a new version from the home server and stores it.
9535: If the original has been removed from the home server, then local copy
9536: is unlinked.
9537: (ii) If local copy does not exist -
9538: requests the file from the home server and stores it.
9539:
9540: If $caller is 'uploadrep':
9541: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
9542: for request for files originally uploaded via DOCS.
9543: - returns 'ok' if fresh local copy now available, -1 otherwise.
9544:
9545: Otherwise:
9546: This indicates a call from the content generation phase of the request.
9547: - returns the entire contents of the file or -1.
9548:
9549: (b) files in /res
9550: - returns the entire contents of a file or -1;
9551: it properly subscribes to and replicates the file if neccessary.
9552:
9553:
9554: =item *
9555:
9556: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
9557: reference
9558:
9559: returns either a stat() list of data about the file or an empty list
9560: if the file doesn't exist or couldn't find out about it (connection
9561: problems or user unknown)
9562:
9563: =item *
9564:
9565: filelocation($dir,$file) : returns file system location of a file
9566: based on URI; meant to be "fairly clean" absolute reference, $dir is a
9567: directory that relative $file lookups are to looked in ($dir of /a/dir
9568: and a file of ../bob will become /a/bob)
9569:
9570: =item *
9571:
9572: hreflocation($dir,$file) : returns file system location or a URL; same as
9573: filelocation except for hrefs
9574:
9575: =item *
9576:
9577: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
9578:
9579: =back
9580:
9581: =head2 Usererfile file routines (/uploaded*)
9582:
9583: =over 4
9584:
9585: =item *
9586:
9587: userfileupload(): main rotine for putting a file in a user or course's
9588: filespace, arguments are,
9589:
9590: formname - required - this is the name of the element in $env where the
9591: filename, and the contents of the file to create/modifed exist
9592: the filename is in $env{'form.'.$formname.'.filename'} and the
9593: contents of the file is located in $env{'form.'.$formname}
9594: coursedoc - if true, store the file in the course of the active role
9595: of the current user
9596: subdir - required - subdirectory to put the file in under ../userfiles/
9597: if undefined, it will be placed in "unknown"
9598:
9599: (This routine calls clean_filename() to remove any dangerous
9600: characters from the filename, and then calls finuserfileupload() to
9601: complete the transaction)
9602:
9603: returns either the url of the uploaded file (/uploaded/....) if successful
9604: and /adm/notfound.html if unsuccessful
9605:
9606: =item *
9607:
9608: clean_filename(): routine for cleaing a filename up for storage in
9609: userfile space, argument is:
9610:
9611: filename - proposed filename
9612:
9613: returns: the new clean filename
9614:
9615: =item *
9616:
9617: finishuserfileupload(): routine that creaes and sends the file to
9618: userspace, probably shouldn't be called directly
9619:
9620: docuname: username or courseid of destination for the file
9621: docudom: domain of user/course of destination for the file
9622: formname: same as for userfileupload()
9623: fname: filename (inculding subdirectories) for the file
9624:
9625: returns either the url of the uploaded file (/uploaded/....) if successful
9626: and /adm/notfound.html if unsuccessful
9627:
9628: =item *
9629:
9630: renameuserfile(): renames an existing userfile to a new name
9631:
9632: Args:
9633: docuname: username or courseid of destination for the file
9634: docudom: domain of user/course of destination for the file
9635: old: current file name (including any subdirs under userfiles)
9636: new: desired file name (including any subdirs under userfiles)
9637:
9638: =item *
9639:
9640: mkdiruserfile(): creates a directory is a userfiles dir
9641:
9642: Args:
9643: docuname: username or courseid of destination for the file
9644: docudom: domain of user/course of destination for the file
9645: dir: dir to create (including any subdirs under userfiles)
9646:
9647: =item *
9648:
9649: removeuserfile(): removes a file that exists in userfiles
9650:
9651: Args:
9652: docuname: username or courseid of destination for the file
9653: docudom: domain of user/course of destination for the file
9654: fname: filname to delete (including any subdirs under userfiles)
9655:
9656: =item *
9657:
9658: removeuploadedurl(): convience function for removeuserfile()
9659:
9660: Args:
9661: url: a full /uploaded/... url to delete
9662:
9663: =item *
9664:
9665: get_portfile_permissions():
9666: Args:
9667: domain: domain of user or course contain the portfolio files
9668: user: name of user or num of course contain the portfolio files
9669: Returns:
9670: hashref of a dump of the proper file_permissions.db
9671:
9672:
9673: =item *
9674:
9675: get_access_controls():
9676:
9677: Args:
9678: current_permissions: the hash ref returned from get_portfile_permissions()
9679: group: (optional) the group you want the files associated with
9680: file: (optional) the file you want access info on
9681:
9682: Returns:
9683: a hash (keys are file names) of hashes containing
9684: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9685: values are XML containing access control settings (see below)
9686:
9687: Internal notes:
9688:
9689: access controls are stored in file_permissions.db as key=value pairs.
9690: key -> path to file/file_name\0uniqueID:scope_end_start
9691: where scope -> public,guest,course,group,domains or users.
9692: end -> UNIX time for end of access (0 -> no end date)
9693: start -> UNIX time for start of access
9694:
9695: value -> XML description of access control
9696: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9697: <start></start>
9698: <end></end>
9699:
9700: <password></password> for scope type = guest
9701:
9702: <domain></domain> for scope type = course or group
9703: <number></number>
9704: <roles id="">
9705: <role></role>
9706: <access></access>
9707: <section></section>
9708: <group></group>
9709: </roles>
9710:
9711: <dom></dom> for scope type = domains
9712:
9713: <users> for scope type = users
9714: <user>
9715: <uname></uname>
9716: <udom></udom>
9717: </user>
9718: </users>
9719: </scope>
9720:
9721: Access data is also aggregated for each file in an additional key=value pair:
9722: key -> path to file/file_name\0accesscontrol
9723: value -> reference to hash
9724: hash contains key = value pairs
9725: where key = uniqueID:scope_end_start
9726: value = UNIX time record was last updated
9727:
9728: Used to improve speed of look-ups of access controls for each file.
9729:
9730: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9731:
9732: modify_access_controls():
9733:
9734: Modifies access controls for a portfolio file
9735: Args
9736: 1. file name
9737: 2. reference to hash of required changes,
9738: 3. domain
9739: 4. username
9740: where domain,username are the domain of the portfolio owner
9741: (either a user or a course)
9742:
9743: Returns:
9744: 1. result of additions or updates ('ok' or 'error', with error message).
9745: 2. result of deletions ('ok' or 'error', with error message).
9746: 3. reference to hash of any new or updated access controls.
9747: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9748: key = integer (inbound ID)
9749: value = uniqueID
9750:
9751: =back
9752:
9753: =head2 HTTP Helper Routines
9754:
9755: =over 4
9756:
9757: =item *
9758:
9759: escape() : unpack non-word characters into CGI-compatible hex codes
9760:
9761: =item *
9762:
9763: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9764:
9765: =back
9766:
9767: =head1 PRIVATE SUBROUTINES
9768:
9769: =head2 Underlying communication routines (Shouldn't call)
9770:
9771: =over 4
9772:
9773: =item *
9774:
9775: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9776:
9777: =item *
9778:
9779: reply() : uses subreply to send a message to remote machine, logs all failures
9780:
9781: =item *
9782:
9783: critical() : passes a critical message to another server; if cannot
9784: get through then place message in connection buffer directory and
9785: returns con_delayed, if incapable of saving message, returns
9786: con_failed
9787:
9788: =item *
9789:
9790: reconlonc() : tries to reconnect lonc client processes.
9791:
9792: =back
9793:
9794: =head2 Resource Access Logging
9795:
9796: =over 4
9797:
9798: =item *
9799:
9800: flushcourselogs() : flush (save) buffer logs and access logs
9801:
9802: =item *
9803:
9804: courselog($what) : save message for course in hash
9805:
9806: =item *
9807:
9808: courseacclog($what) : save message for course using &courselog(). Perform
9809: special processing for specific resource types (problems, exams, quizzes, etc).
9810:
9811: =item *
9812:
9813: goodbye() : flush course logs and log shutting down; it is called in srm.conf
9814: as a PerlChildExitHandler
9815:
9816: =back
9817:
9818: =head2 Other
9819:
9820: =over 4
9821:
9822: =item *
9823:
9824: symblist($mapname,%newhash) : update symbolic storage links
9825:
9826: =back
9827:
9828: =cut
9829:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonnet.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / lonnet / perl