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[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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Mon Mar 24 05:23:19 2008 UTC (16 years, 4 months ago) by
raeburn
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- Authentication will be attempted for users attempting to log-in with usernames for which there is no user account, if account creation is permitted for the 'login' type.
- If supplied credentials are authenticated, the user will be able to create an account in the domain. (Requires default authentication in the domain to be Kerberos or localauth -- see lond 1.396).
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.952 2008/03/24 05:23:19 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,$checkdefauth)=@_;
709: $upass=&escape($upass);
710: $uname= &LONCAPA::clean_username($uname);
711: my $uhome=&homeserver($uname,$udom,1);
712: my $newhome;
713: if ((!$uhome) || ($uhome eq 'no_host')) {
714: # Maybe the machine was offline and only re-appeared again recently?
715: &reconlonc();
716: # One more
717: $uhome=&homeserver($uname,$udom,1);
718: if (($uhome eq 'no_host') && $checkdefauth) {
719: if (defined(&domain($udom,'primary'))) {
720: $newhome=&domain($udom,'primary');
721: }
722: if ($newhome ne '') {
723: $uhome = $newhome;
724: }
725: }
726: if ((!$uhome) || ($uhome eq 'no_host')) {
727: &logthis("User $uname at $udom is unknown in authenticate");
728: return 'no_host';
729: }
730: }
731: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
732: if ($answer eq 'authorized') {
733: if ($newhome) {
734: &logthis("User $uname at $udom authorized by $uhome, but needs account");
735: return 'no_account_on_host';
736: } else {
737: &logthis("User $uname at $udom authorized by $uhome");
738: return $uhome;
739: }
740: }
741: if ($answer eq 'non_authorized') {
742: &logthis("User $uname at $udom rejected by $uhome");
743: return 'no_host';
744: }
745: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
746: return 'no_host';
747: }
748:
749: # ---------------------- Find the homebase for a user from domain's lib servers
750:
751: my %homecache;
752: sub homeserver {
753: my ($uname,$udom,$ignoreBadCache)=@_;
754: my $index="$uname:$udom";
755:
756: if (exists($homecache{$index})) { return $homecache{$index}; }
757:
758: my %servers = &get_servers($udom,'library');
759: foreach my $tryserver (keys(%servers)) {
760: next if ($ignoreBadCache ne 'true' &&
761: exists($badServerCache{$tryserver}));
762:
763: my $answer=reply("home:$udom:$uname",$tryserver);
764: if ($answer eq 'found') {
765: delete($badServerCache{$tryserver});
766: return $homecache{$index}=$tryserver;
767: } elsif ($answer eq 'no_host') {
768: $badServerCache{$tryserver}=1;
769: }
770: }
771: return 'no_host';
772: }
773:
774: # ------------------------------------- Find the usernames behind a list of IDs
775:
776: sub idget {
777: my ($udom,@ids)=@_;
778: my %returnhash=();
779:
780: my %servers = &get_servers($udom,'library');
781: foreach my $tryserver (keys(%servers)) {
782: my $idlist=join('&',@ids);
783: $idlist=~tr/A-Z/a-z/;
784: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
785: my @answer=();
786: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
787: @answer=split(/\&/,$reply);
788: } ;
789: my $i;
790: for ($i=0;$i<=$#ids;$i++) {
791: if ($answer[$i]) {
792: $returnhash{$ids[$i]}=$answer[$i];
793: }
794: }
795: }
796: return %returnhash;
797: }
798:
799: # ------------------------------------- Find the IDs behind a list of usernames
800:
801: sub idrget {
802: my ($udom,@unames)=@_;
803: my %returnhash=();
804: foreach my $uname (@unames) {
805: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
806: }
807: return %returnhash;
808: }
809:
810: # ------------------------------- Store away a list of names and associated IDs
811:
812: sub idput {
813: my ($udom,%ids)=@_;
814: my %servers=();
815: foreach my $uname (keys(%ids)) {
816: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
817: my $uhom=&homeserver($uname,$udom);
818: if ($uhom ne 'no_host') {
819: my $id=&escape($ids{$uname});
820: $id=~tr/A-Z/a-z/;
821: my $esc_unam=&escape($uname);
822: if ($servers{$uhom}) {
823: $servers{$uhom}.='&'.$id.'='.$esc_unam;
824: } else {
825: $servers{$uhom}=$id.'='.$esc_unam;
826: }
827: }
828: }
829: foreach my $server (keys(%servers)) {
830: &critical('idput:'.$udom.':'.$servers{$server},$server);
831: }
832: }
833:
834: # ------------------------------------------- get items from domain db files
835:
836: sub get_dom {
837: my ($namespace,$storearr,$udom,$uhome)=@_;
838: my $items='';
839: foreach my $item (@$storearr) {
840: $items.=&escape($item).'&';
841: }
842: $items=~s/\&$//;
843: if (!$udom) {
844: $udom=$env{'user.domain'};
845: if (defined(&domain($udom,'primary'))) {
846: $uhome=&domain($udom,'primary');
847: } else {
848: undef($uhome);
849: }
850: } else {
851: if (!$uhome) {
852: if (defined(&domain($udom,'primary'))) {
853: $uhome=&domain($udom,'primary');
854: }
855: }
856: }
857: if ($udom && $uhome && ($uhome ne 'no_host')) {
858: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
859: my %returnhash;
860: if ($rep eq '' || $rep =~ /^error: 2 /) {
861: return %returnhash;
862: }
863: my @pairs=split(/\&/,$rep);
864: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
865: return @pairs;
866: }
867: my $i=0;
868: foreach my $item (@$storearr) {
869: $returnhash{$item}=&thaw_unescape($pairs[$i]);
870: $i++;
871: }
872: return %returnhash;
873: } else {
874: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
875: }
876: }
877:
878: # -------------------------------------------- put items in domain db files
879:
880: sub put_dom {
881: my ($namespace,$storehash,$udom,$uhome)=@_;
882: if (!$udom) {
883: $udom=$env{'user.domain'};
884: if (defined(&domain($udom,'primary'))) {
885: $uhome=&domain($udom,'primary');
886: } else {
887: undef($uhome);
888: }
889: } else {
890: if (!$uhome) {
891: if (defined(&domain($udom,'primary'))) {
892: $uhome=&domain($udom,'primary');
893: }
894: }
895: }
896: if ($udom && $uhome && ($uhome ne 'no_host')) {
897: my $items='';
898: foreach my $item (keys(%$storehash)) {
899: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
900: }
901: $items=~s/\&$//;
902: return &reply("putdom:$udom:$namespace:$items",$uhome);
903: } else {
904: &logthis("put_dom failed - no homeserver and/or domain");
905: }
906: }
907:
908: sub retrieve_inst_usertypes {
909: my ($udom) = @_;
910: my (%returnhash,@order);
911: if (defined(&domain($udom,'primary'))) {
912: my $uhome=&domain($udom,'primary');
913: my $rep=&reply("inst_usertypes:$udom",$uhome);
914: my ($hashitems,$orderitems) = split(/:/,$rep);
915: my @pairs=split(/\&/,$hashitems);
916: foreach my $item (@pairs) {
917: my ($key,$value)=split(/=/,$item,2);
918: $key = &unescape($key);
919: next if ($key =~ /^error: 2 /);
920: $returnhash{$key}=&thaw_unescape($value);
921: }
922: my @esc_order = split(/\&/,$orderitems);
923: foreach my $item (@esc_order) {
924: push(@order,&unescape($item));
925: }
926: } else {
927: &logthis("get_dom failed - no primary domain server for $udom");
928: }
929: return (\%returnhash,\@order);
930: }
931:
932: sub is_domainimage {
933: my ($url) = @_;
934: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
935: if (&domain($1) ne '') {
936: return '1';
937: }
938: }
939: return;
940: }
941:
942: sub inst_directory_query {
943: my ($srch) = @_;
944: my $udom = $srch->{'srchdomain'};
945: my %results;
946: my $homeserver = &domain($udom,'primary');
947: my $outcome;
948: if ($homeserver ne '') {
949: my $queryid=&reply("querysend:instdirsearch:".
950: &escape($srch->{'srchby'}).':'.
951: &escape($srch->{'srchterm'}).':'.
952: &escape($srch->{'srchtype'}),$homeserver);
953: my $host=&hostname($homeserver);
954: if ($queryid !~/^\Q$host\E\_/) {
955: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
956: return;
957: }
958: my $response = &get_query_reply($queryid);
959: my $maxtries = 5;
960: my $tries = 1;
961: while (($response=~/^timeout/) && ($tries < $maxtries)) {
962: $response = &get_query_reply($queryid);
963: $tries ++;
964: }
965:
966: if (!&error($response) && $response ne 'refused') {
967: if ($response eq 'unavailable') {
968: $outcome = $response;
969: } else {
970: $outcome = 'ok';
971: my @matches = split(/\n/,$response);
972: foreach my $match (@matches) {
973: my ($key,$value) = split(/=/,$match);
974: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
975: }
976: }
977: }
978: }
979: return ($outcome,%results);
980: }
981:
982: sub usersearch {
983: my ($srch) = @_;
984: my $dom = $srch->{'srchdomain'};
985: my %results;
986: my %libserv = &all_library();
987: my $query = 'usersearch';
988: foreach my $tryserver (keys(%libserv)) {
989: if (&host_domain($tryserver) eq $dom) {
990: my $host=&hostname($tryserver);
991: my $queryid=
992: &reply("querysend:".&escape($query).':'.
993: &escape($srch->{'srchby'}).':'.
994: &escape($srch->{'srchtype'}).':'.
995: &escape($srch->{'srchterm'}),$tryserver);
996: if ($queryid !~/^\Q$host\E\_/) {
997: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
998: next;
999: }
1000: my $reply = &get_query_reply($queryid);
1001: my $maxtries = 1;
1002: my $tries = 1;
1003: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1004: $reply = &get_query_reply($queryid);
1005: $tries ++;
1006: }
1007: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1008: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1009: } else {
1010: my @matches;
1011: if ($reply =~ /\n/) {
1012: @matches = split(/\n/,$reply);
1013: } else {
1014: @matches = split(/\&/,$reply);
1015: }
1016: foreach my $match (@matches) {
1017: my ($uname,$udom,%userhash);
1018: foreach my $entry (split(/:/,$match)) {
1019: my ($key,$value) =
1020: map {&unescape($_);} split(/=/,$entry);
1021: $userhash{$key} = $value;
1022: if ($key eq 'username') {
1023: $uname = $value;
1024: } elsif ($key eq 'domain') {
1025: $udom = $value;
1026: }
1027: }
1028: $results{$uname.':'.$udom} = \%userhash;
1029: }
1030: }
1031: }
1032: }
1033: return %results;
1034: }
1035:
1036: sub get_instuser {
1037: my ($udom,$uname,$id) = @_;
1038: my $homeserver = &domain($udom,'primary');
1039: my ($outcome,%results);
1040: if ($homeserver ne '') {
1041: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1042: &escape($id).':'.&escape($udom),$homeserver);
1043: my $host=&hostname($homeserver);
1044: if ($queryid !~/^\Q$host\E\_/) {
1045: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1046: return;
1047: }
1048: my $response = &get_query_reply($queryid);
1049: my $maxtries = 5;
1050: my $tries = 1;
1051: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1052: $response = &get_query_reply($queryid);
1053: $tries ++;
1054: }
1055: if (!&error($response) && $response ne 'refused') {
1056: if ($response eq 'unavailable') {
1057: $outcome = $response;
1058: } else {
1059: $outcome = 'ok';
1060: my @matches = split(/\n/,$response);
1061: foreach my $match (@matches) {
1062: my ($key,$value) = split(/=/,$match);
1063: $results{&unescape($key)} = &thaw_unescape($value);
1064: }
1065: }
1066: }
1067: }
1068: my %userinfo;
1069: if (ref($results{$uname}) eq 'HASH') {
1070: %userinfo = %{$results{$uname}};
1071: }
1072: return ($outcome,%userinfo);
1073: }
1074:
1075: sub inst_rulecheck {
1076: my ($udom,$uname,$id,$item,$rules) = @_;
1077: my %returnhash;
1078: if ($udom ne '') {
1079: if (ref($rules) eq 'ARRAY') {
1080: @{$rules} = map {&escape($_);} (@{$rules});
1081: my $rulestr = join(':',@{$rules});
1082: my $homeserver=&domain($udom,'primary');
1083: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1084: my $response;
1085: if ($item eq 'username') {
1086: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1087: ':'.&escape($uname).':'.$rulestr,
1088: $homeserver));
1089: } elsif ($item eq 'id') {
1090: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1091: ':'.&escape($id).':'.$rulestr,
1092: $homeserver));
1093: } elsif ($item eq 'selfcreate') {
1094: $response=&unescape(&reply('instselfcreatecheck:'.
1095: &escape($udom).':'.&escape($uname).
1096: ':'.$rulestr,$homeserver));
1097: }
1098: if ($response ne 'refused') {
1099: my @pairs=split(/\&/,$response);
1100: foreach my $item (@pairs) {
1101: my ($key,$value)=split(/=/,$item,2);
1102: $key = &unescape($key);
1103: next if ($key =~ /^error: 2 /);
1104: $returnhash{$key}=&thaw_unescape($value);
1105: }
1106: }
1107: }
1108: }
1109: }
1110: return %returnhash;
1111: }
1112:
1113: sub inst_userrules {
1114: my ($udom,$check) = @_;
1115: my (%ruleshash,@ruleorder);
1116: if ($udom ne '') {
1117: my $homeserver=&domain($udom,'primary');
1118: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1119: my $response;
1120: if ($check eq 'id') {
1121: $response=&reply('instidrules:'.&escape($udom),
1122: $homeserver);
1123: } elsif ($check eq 'email') {
1124: $response=&reply('instemailrules:'.&escape($udom),
1125: $homeserver);
1126: } else {
1127: $response=&reply('instuserrules:'.&escape($udom),
1128: $homeserver);
1129: }
1130: if (($response ne 'refused') && ($response ne 'error') &&
1131: ($response ne 'unknown_cmd') &&
1132: ($response ne 'no_such_host')) {
1133: my ($hashitems,$orderitems) = split(/:/,$response);
1134: my @pairs=split(/\&/,$hashitems);
1135: foreach my $item (@pairs) {
1136: my ($key,$value)=split(/=/,$item,2);
1137: $key = &unescape($key);
1138: next if ($key =~ /^error: 2 /);
1139: $ruleshash{$key}=&thaw_unescape($value);
1140: }
1141: my @esc_order = split(/\&/,$orderitems);
1142: foreach my $item (@esc_order) {
1143: push(@ruleorder,&unescape($item));
1144: }
1145: }
1146: }
1147: }
1148: return (\%ruleshash,\@ruleorder);
1149: }
1150:
1151: # ------------------------- Get Authentication and Language Defaults for Domain
1152:
1153: sub get_domain_defaults {
1154: my ($domain) = @_;
1155: my $cachetime = 60*60*24;
1156: my ($defauthtype,$defautharg,$deflang);
1157: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1158: if (defined($cached)) {
1159: if (ref($result) eq 'HASH') {
1160: return %{$result};
1161: }
1162: }
1163: my %domdefaults;
1164: my %domconfig =
1165: &Apache::lonnet::get_dom('configuration',['defaults'],$domain);
1166: if (ref($domconfig{'defaults'}) eq 'HASH') {
1167: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1168: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1169: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1170: } else {
1171: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1172: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1173: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1174: }
1175: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1176: $cachetime);
1177: return %domdefaults;
1178: }
1179:
1180: # --------------------------------------------------- Assign a key to a student
1181:
1182: sub assign_access_key {
1183: #
1184: # a valid key looks like uname:udom#comments
1185: # comments are being appended
1186: #
1187: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1188: $kdom=
1189: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1190: $knum=
1191: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1192: $cdom=
1193: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1194: $cnum=
1195: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1196: $udom=$env{'user.name'} unless (defined($udom));
1197: $uname=$env{'user.domain'} unless (defined($uname));
1198: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1199: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1200: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1201: # assigned to this person
1202: # - this should not happen,
1203: # unless something went wrong
1204: # the first time around
1205: # ready to assign
1206: $logentry=$1.'; '.$logentry;
1207: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1208: $kdom,$knum) eq 'ok') {
1209: # key now belongs to user
1210: my $envkey='key.'.$cdom.'_'.$cnum;
1211: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1212: &appenv({'environment.'.$envkey => $ckey});
1213: return 'ok';
1214: } else {
1215: return
1216: 'error: Count not permanently assign key, will need to be re-entered later.';
1217: }
1218: } else {
1219: return 'error: Could not assign key, try again later.';
1220: }
1221: } elsif (!$existing{$ckey}) {
1222: # the key does not exist
1223: return 'error: The key does not exist';
1224: } else {
1225: # the key is somebody else's
1226: return 'error: The key is already in use';
1227: }
1228: }
1229:
1230: # ------------------------------------------ put an additional comment on a key
1231:
1232: sub comment_access_key {
1233: #
1234: # a valid key looks like uname:udom#comments
1235: # comments are being appended
1236: #
1237: my ($ckey,$cdom,$cnum,$logentry)=@_;
1238: $cdom=
1239: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1240: $cnum=
1241: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1242: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1243: if ($existing{$ckey}) {
1244: $existing{$ckey}.='; '.$logentry;
1245: # ready to assign
1246: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1247: $cdom,$cnum) eq 'ok') {
1248: return 'ok';
1249: } else {
1250: return 'error: Count not store comment.';
1251: }
1252: } else {
1253: # the key does not exist
1254: return 'error: The key does not exist';
1255: }
1256: }
1257:
1258: # ------------------------------------------------------ Generate a set of keys
1259:
1260: sub generate_access_keys {
1261: my ($number,$cdom,$cnum,$logentry)=@_;
1262: $cdom=
1263: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1264: $cnum=
1265: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1266: unless (&allowed('mky',$cdom)) { return 0; }
1267: unless (($cdom) && ($cnum)) { return 0; }
1268: if ($number>10000) { return 0; }
1269: sleep(2); # make sure don't get same seed twice
1270: srand(time()^($$+($$<<15))); # from "Programming Perl"
1271: my $total=0;
1272: for (my $i=1;$i<=$number;$i++) {
1273: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1274: sprintf("%lx",int(100000*rand)).'-'.
1275: sprintf("%lx",int(100000*rand));
1276: $newkey=~s/1/g/g; # folks mix up 1 and l
1277: $newkey=~s/0/h/g; # and also 0 and O
1278: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1279: if ($existing{$newkey}) {
1280: $i--;
1281: } else {
1282: if (&put('accesskeys',
1283: { $newkey => '# generated '.localtime().
1284: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1285: '; '.$logentry },
1286: $cdom,$cnum) eq 'ok') {
1287: $total++;
1288: }
1289: }
1290: }
1291: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1292: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1293: return $total;
1294: }
1295:
1296: # ------------------------------------------------------- Validate an accesskey
1297:
1298: sub validate_access_key {
1299: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1300: $cdom=
1301: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1302: $cnum=
1303: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1304: $udom=$env{'user.domain'} unless (defined($udom));
1305: $uname=$env{'user.name'} unless (defined($uname));
1306: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1307: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1308: }
1309:
1310: # ------------------------------------- Find the section of student in a course
1311: sub devalidate_getsection_cache {
1312: my ($udom,$unam,$courseid)=@_;
1313: my $hashid="$udom:$unam:$courseid";
1314: &devalidate_cache_new('getsection',$hashid);
1315: }
1316:
1317: sub courseid_to_courseurl {
1318: my ($courseid) = @_;
1319: #already url style courseid
1320: return $courseid if ($courseid =~ m{^/});
1321:
1322: if (exists($env{'course.'.$courseid.'.num'})) {
1323: my $cnum = $env{'course.'.$courseid.'.num'};
1324: my $cdom = $env{'course.'.$courseid.'.domain'};
1325: return "/$cdom/$cnum";
1326: }
1327:
1328: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1329: if (exists($courseinfo{'num'})) {
1330: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1331: }
1332:
1333: return undef;
1334: }
1335:
1336: sub getsection {
1337: my ($udom,$unam,$courseid)=@_;
1338: my $cachetime=1800;
1339:
1340: my $hashid="$udom:$unam:$courseid";
1341: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1342: if (defined($cached)) { return $result; }
1343:
1344: my %Pending;
1345: my %Expired;
1346: #
1347: # Each role can either have not started yet (pending), be active,
1348: # or have expired.
1349: #
1350: # If there is an active role, we are done.
1351: #
1352: # If there is more than one role which has not started yet,
1353: # choose the one which will start sooner
1354: # If there is one role which has not started yet, return it.
1355: #
1356: # If there is more than one expired role, choose the one which ended last.
1357: # If there is a role which has expired, return it.
1358: #
1359: $courseid = &courseid_to_courseurl($courseid);
1360: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1361: foreach my $key (keys(%roleshash)) {
1362: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1363: my $section=$1;
1364: if ($key eq $courseid.'_st') { $section=''; }
1365: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1366: my $now=time;
1367: if (defined($end) && $end && ($now > $end)) {
1368: $Expired{$end}=$section;
1369: next;
1370: }
1371: if (defined($start) && $start && ($now < $start)) {
1372: $Pending{$start}=$section;
1373: next;
1374: }
1375: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1376: }
1377: #
1378: # Presumedly there will be few matching roles from the above
1379: # loop and the sorting time will be negligible.
1380: if (scalar(keys(%Pending))) {
1381: my ($time) = sort {$a <=> $b} keys(%Pending);
1382: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1383: }
1384: if (scalar(keys(%Expired))) {
1385: my @sorted = sort {$a <=> $b} keys(%Expired);
1386: my $time = pop(@sorted);
1387: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1388: }
1389: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1390: }
1391:
1392: sub save_cache {
1393: &purge_remembered();
1394: #&Apache::loncommon::validate_page();
1395: undef(%env);
1396: undef($env_loaded);
1397: }
1398:
1399: my $to_remember=-1;
1400: my %remembered;
1401: my %accessed;
1402: my $kicks=0;
1403: my $hits=0;
1404: sub make_key {
1405: my ($name,$id) = @_;
1406: if (length($id) > 65
1407: && length(&escape($id)) > 200) {
1408: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1409: }
1410: return &escape($name.':'.$id);
1411: }
1412:
1413: sub devalidate_cache_new {
1414: my ($name,$id,$debug) = @_;
1415: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1416: $id=&make_key($name,$id);
1417: $memcache->delete($id);
1418: delete($remembered{$id});
1419: delete($accessed{$id});
1420: }
1421:
1422: sub is_cached_new {
1423: my ($name,$id,$debug) = @_;
1424: $id=&make_key($name,$id);
1425: if (exists($remembered{$id})) {
1426: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1427: $accessed{$id}=[&gettimeofday()];
1428: $hits++;
1429: return ($remembered{$id},1);
1430: }
1431: my $value = $memcache->get($id);
1432: if (!(defined($value))) {
1433: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1434: return (undef,undef);
1435: }
1436: if ($value eq '__undef__') {
1437: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1438: $value=undef;
1439: }
1440: &make_room($id,$value,$debug);
1441: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1442: return ($value,1);
1443: }
1444:
1445: sub do_cache_new {
1446: my ($name,$id,$value,$time,$debug) = @_;
1447: $id=&make_key($name,$id);
1448: my $setvalue=$value;
1449: if (!defined($setvalue)) {
1450: $setvalue='__undef__';
1451: }
1452: if (!defined($time) ) {
1453: $time=600;
1454: }
1455: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1456: my $result = $memcache->set($id,$setvalue,$time);
1457: if (! $result) {
1458: &logthis("caching of id -> $id failed");
1459: $memcache->disconnect_all();
1460: }
1461: # need to make a copy of $value
1462: &make_room($id,$value,$debug);
1463: return $value;
1464: }
1465:
1466: sub make_room {
1467: my ($id,$value,$debug)=@_;
1468:
1469: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1470: : $value;
1471: if ($to_remember<0) { return; }
1472: $accessed{$id}=[&gettimeofday()];
1473: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1474: my $to_kick;
1475: my $max_time=0;
1476: foreach my $other (keys(%accessed)) {
1477: if (&tv_interval($accessed{$other}) > $max_time) {
1478: $to_kick=$other;
1479: $max_time=&tv_interval($accessed{$other});
1480: }
1481: }
1482: delete($remembered{$to_kick});
1483: delete($accessed{$to_kick});
1484: $kicks++;
1485: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1486: return;
1487: }
1488:
1489: sub purge_remembered {
1490: #&logthis("Tossing ".scalar(keys(%remembered)));
1491: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1492: undef(%remembered);
1493: undef(%accessed);
1494: }
1495: # ------------------------------------- Read an entry from a user's environment
1496:
1497: sub userenvironment {
1498: my ($udom,$unam,@what)=@_;
1499: my %returnhash=();
1500: my @answer=split(/\&/,
1501: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1502: &homeserver($unam,$udom)));
1503: my $i;
1504: for ($i=0;$i<=$#what;$i++) {
1505: $returnhash{$what[$i]}=&unescape($answer[$i]);
1506: }
1507: return %returnhash;
1508: }
1509:
1510: # ---------------------------------------------------------- Get a studentphoto
1511: sub studentphoto {
1512: my ($udom,$unam,$ext) = @_;
1513: my $home=&Apache::lonnet::homeserver($unam,$udom);
1514: if (defined($env{'request.course.id'})) {
1515: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1516: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1517: return(&retrievestudentphoto($udom,$unam,$ext));
1518: } else {
1519: my ($result,$perm_reqd)=
1520: &Apache::lonnet::auto_photo_permission($unam,$udom);
1521: if ($result eq 'ok') {
1522: if (!($perm_reqd eq 'yes')) {
1523: return(&retrievestudentphoto($udom,$unam,$ext));
1524: }
1525: }
1526: }
1527: }
1528: } else {
1529: my ($result,$perm_reqd) =
1530: &Apache::lonnet::auto_photo_permission($unam,$udom);
1531: if ($result eq 'ok') {
1532: if (!($perm_reqd eq 'yes')) {
1533: return(&retrievestudentphoto($udom,$unam,$ext));
1534: }
1535: }
1536: }
1537: return '/adm/lonKaputt/lonlogo_broken.gif';
1538: }
1539:
1540: sub retrievestudentphoto {
1541: my ($udom,$unam,$ext,$type) = @_;
1542: my $home=&Apache::lonnet::homeserver($unam,$udom);
1543: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1544: if ($ret eq 'ok') {
1545: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1546: if ($type eq 'thumbnail') {
1547: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1548: }
1549: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1550: return $tokenurl;
1551: } else {
1552: if ($type eq 'thumbnail') {
1553: return '/adm/lonKaputt/genericstudent_tn.gif';
1554: } else {
1555: return '/adm/lonKaputt/lonlogo_broken.gif';
1556: }
1557: }
1558: }
1559:
1560: # -------------------------------------------------------------------- New chat
1561:
1562: sub chatsend {
1563: my ($newentry,$anon,$group)=@_;
1564: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1565: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1566: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1567: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1568: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1569: &escape($newentry)).':'.$group,$chome);
1570: }
1571:
1572: # ------------------------------------------ Find current version of a resource
1573:
1574: sub getversion {
1575: my $fname=&clutter(shift);
1576: unless ($fname=~/^\/res\//) { return -1; }
1577: return ¤tversion(&filelocation('',$fname));
1578: }
1579:
1580: sub currentversion {
1581: my $fname=shift;
1582: my ($result,$cached)=&is_cached_new('resversion',$fname);
1583: if (defined($cached)) { return $result; }
1584: my $author=$fname;
1585: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1586: my ($udom,$uname)=split(/\//,$author);
1587: my $home=homeserver($uname,$udom);
1588: if ($home eq 'no_host') {
1589: return -1;
1590: }
1591: my $answer=reply("currentversion:$fname",$home);
1592: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1593: return -1;
1594: }
1595: return &do_cache_new('resversion',$fname,$answer,600);
1596: }
1597:
1598: # ----------------------------- Subscribe to a resource, return URL if possible
1599:
1600: sub subscribe {
1601: my $fname=shift;
1602: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1603: $fname=~s/[\n\r]//g;
1604: my $author=$fname;
1605: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1606: my ($udom,$uname)=split(/\//,$author);
1607: my $home=homeserver($uname,$udom);
1608: if ($home eq 'no_host') {
1609: return 'not_found';
1610: }
1611: my $answer=reply("sub:$fname",$home);
1612: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1613: $answer.=' by '.$home;
1614: }
1615: return $answer;
1616: }
1617:
1618: # -------------------------------------------------------------- Replicate file
1619:
1620: sub repcopy {
1621: my $filename=shift;
1622: $filename=~s/\/+/\//g;
1623: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1624: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1625: if ($filename=~m|^/home/httpd/html/userfiles/| or
1626: $filename=~m -^/*(uploaded|editupload)/-) {
1627: return &repcopy_userfile($filename);
1628: }
1629: $filename=~s/[\n\r]//g;
1630: my $transname="$filename.in.transfer";
1631: # FIXME: this should flock
1632: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1633: my $remoteurl=subscribe($filename);
1634: if ($remoteurl =~ /^con_lost by/) {
1635: &logthis("Subscribe returned $remoteurl: $filename");
1636: return 'unavailable';
1637: } elsif ($remoteurl eq 'not_found') {
1638: #&logthis("Subscribe returned not_found: $filename");
1639: return 'not_found';
1640: } elsif ($remoteurl =~ /^rejected by/) {
1641: &logthis("Subscribe returned $remoteurl: $filename");
1642: return 'forbidden';
1643: } elsif ($remoteurl eq 'directory') {
1644: return 'ok';
1645: } else {
1646: my $author=$filename;
1647: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1648: my ($udom,$uname)=split(/\//,$author);
1649: my $home=homeserver($uname,$udom);
1650: unless ($home eq $perlvar{'lonHostID'}) {
1651: my @parts=split(/\//,$filename);
1652: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1653: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1654: &logthis("Malconfiguration for replication: $filename");
1655: return 'bad_request';
1656: }
1657: my $count;
1658: for ($count=5;$count<$#parts;$count++) {
1659: $path.="/$parts[$count]";
1660: if ((-e $path)!=1) {
1661: mkdir($path,0777);
1662: }
1663: }
1664: my $ua=new LWP::UserAgent;
1665: my $request=new HTTP::Request('GET',"$remoteurl");
1666: my $response=$ua->request($request,$transname);
1667: if ($response->is_error()) {
1668: unlink($transname);
1669: my $message=$response->status_line;
1670: &logthis("<font color=\"blue\">WARNING:"
1671: ." LWP get: $message: $filename</font>");
1672: return 'unavailable';
1673: } else {
1674: if ($remoteurl!~/\.meta$/) {
1675: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1676: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1677: if ($mresponse->is_error()) {
1678: unlink($filename.'.meta');
1679: &logthis(
1680: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1681: }
1682: }
1683: rename($transname,$filename);
1684: return 'ok';
1685: }
1686: }
1687: }
1688: }
1689:
1690: # ------------------------------------------------ Get server side include body
1691: sub ssi_body {
1692: my ($filelink,%form)=@_;
1693: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1694: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1695: }
1696: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1697: &ssi($filelink,%form));
1698: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1699: $output=~s/^.*?\<body[^\>]*\>//si;
1700: $output=~s/\<\/body\s*\>.*?$//si;
1701: return $output;
1702: }
1703:
1704: # --------------------------------------------------------- Server Side Include
1705:
1706: sub absolute_url {
1707: my ($host_name) = @_;
1708: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1709: if ($host_name eq '') {
1710: $host_name = $ENV{'SERVER_NAME'};
1711: }
1712: return $protocol.$host_name;
1713: }
1714:
1715: #
1716: # Server side include.
1717: # Parameters:
1718: # fn Possibly encrypted resource name/id.
1719: # form Hash that describes how the rendering should be done
1720: # and other things.
1721: # Returns:
1722: # Scalar context: The content of the response.
1723: # Array context: 2 element list of the content and the full response object.
1724: #
1725: sub ssi {
1726:
1727: my ($fn,%form)=@_;
1728: my $ua=new LWP::UserAgent;
1729: my $request;
1730:
1731: $form{'no_update_last_known'}=1;
1732: &Apache::lonenc::check_encrypt(\$fn);
1733: if (%form) {
1734: $request=new HTTP::Request('POST',&absolute_url().$fn);
1735: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1736: } else {
1737: $request=new HTTP::Request('GET',&absolute_url().$fn);
1738: }
1739:
1740: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1741: my $response=$ua->request($request);
1742:
1743: if (wantarray) {
1744: return ($response->content, $response);
1745: } else {
1746: return $response->content;
1747: }
1748: }
1749:
1750: sub externalssi {
1751: my ($url)=@_;
1752: my $ua=new LWP::UserAgent;
1753: my $request=new HTTP::Request('GET',$url);
1754: my $response=$ua->request($request);
1755: return $response->content;
1756: }
1757:
1758: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1759:
1760: sub allowuploaded {
1761: my ($srcurl,$url)=@_;
1762: $url=&clutter(&declutter($url));
1763: my $dir=$url;
1764: $dir=~s/\/[^\/]+$//;
1765: my %httpref=();
1766: my $httpurl=&hreflocation('',$url);
1767: $httpref{'httpref.'.$httpurl}=$srcurl;
1768: &Apache::lonnet::appenv(\%httpref);
1769: }
1770:
1771: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1772: # input: action, courseID, current domain, intended
1773: # path to file, source of file, instruction to parse file for objects,
1774: # ref to hash for embedded objects,
1775: # ref to hash for codebase of java objects.
1776: #
1777: # output: url to file (if action was uploaddoc),
1778: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1779: #
1780: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1781: # course.
1782: #
1783: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1784: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1785: # course's home server.
1786: #
1787: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1788: # be copied from $source (current location) to
1789: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1790: # and will then be copied to
1791: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1792: # course's home server.
1793: #
1794: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1795: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1796: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1797: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1798: # in course's home server.
1799: #
1800:
1801: sub process_coursefile {
1802: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1803: my $fetchresult;
1804: my $home=&homeserver($docuname,$docudom);
1805: if ($action eq 'propagate') {
1806: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1807: $home);
1808: } else {
1809: my $fpath = '';
1810: my $fname = $file;
1811: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1812: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1813: my $filepath = &build_filepath($fpath);
1814: if ($action eq 'copy') {
1815: if ($source eq '') {
1816: $fetchresult = 'no source file';
1817: return $fetchresult;
1818: } else {
1819: my $destination = $filepath.'/'.$fname;
1820: rename($source,$destination);
1821: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1822: $home);
1823: }
1824: } elsif ($action eq 'uploaddoc') {
1825: open(my $fh,'>'.$filepath.'/'.$fname);
1826: print $fh $env{'form.'.$source};
1827: close($fh);
1828: if ($parser eq 'parse') {
1829: my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);
1830: unless ($parse_result eq 'ok') {
1831: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1832: }
1833: }
1834: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1835: $home);
1836: if ($fetchresult eq 'ok') {
1837: return '/uploaded/'.$fpath.'/'.$fname;
1838: } else {
1839: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1840: ' to host '.$home.': '.$fetchresult);
1841: return '/adm/notfound.html';
1842: }
1843: }
1844: }
1845: unless ( $fetchresult eq 'ok') {
1846: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1847: ' to host '.$home.': '.$fetchresult);
1848: }
1849: return $fetchresult;
1850: }
1851:
1852: sub build_filepath {
1853: my ($fpath) = @_;
1854: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1855: unless ($fpath eq '') {
1856: my @parts=split('/',$fpath);
1857: foreach my $part (@parts) {
1858: $filepath.= '/'.$part;
1859: if ((-e $filepath)!=1) {
1860: mkdir($filepath,0777);
1861: }
1862: }
1863: }
1864: return $filepath;
1865: }
1866:
1867: sub store_edited_file {
1868: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1869: my $file = $primary_url;
1870: $file =~ s#^/uploaded/$docudom/$docuname/##;
1871: my $fpath = '';
1872: my $fname = $file;
1873: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1874: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1875: my $filepath = &build_filepath($fpath);
1876: open(my $fh,'>'.$filepath.'/'.$fname);
1877: print $fh $content;
1878: close($fh);
1879: my $home=&homeserver($docuname,$docudom);
1880: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1881: $home);
1882: if ($$fetchresult eq 'ok') {
1883: return '/uploaded/'.$fpath.'/'.$fname;
1884: } else {
1885: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1886: ' to host '.$home.': '.$$fetchresult);
1887: return '/adm/notfound.html';
1888: }
1889: }
1890:
1891: sub clean_filename {
1892: my ($fname,$args)=@_;
1893: # Replace Windows backslashes by forward slashes
1894: $fname=~s/\\/\//g;
1895: if (!$args->{'keep_path'}) {
1896: # Get rid of everything but the actual filename
1897: $fname=~s/^.*\/([^\/]+)$/$1/;
1898: }
1899: # Replace spaces by underscores
1900: $fname=~s/\s+/\_/g;
1901: # Replace all other weird characters by nothing
1902: $fname=~s{[^/\w\.\-]}{}g;
1903: # Replace all .\d. sequences with _\d. so they no longer look like version
1904: # numbers
1905: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1906: return $fname;
1907: }
1908:
1909: # --------------- Take an uploaded file and put it into the userfiles directory
1910: # input: $formname - the contents of the file are in $env{"form.$formname"}
1911: # the desired filenam is in $env{"form.$formname.filename"}
1912: # $coursedoc - if true up to the current course
1913: # if false
1914: # $subdir - directory in userfile to store the file into
1915: # $parser - instruction to parse file for objects ($parser = parse)
1916: # $allfiles - reference to hash for embedded objects
1917: # $codebase - reference to hash for codebase of java objects
1918: # $desuname - username for permanent storage of uploaded file
1919: # $dsetudom - domain for permanaent storage of uploaded file
1920: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
1921: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
1922: #
1923: # output: url of file in userspace, or error: <message>
1924: # or /adm/notfound.html if failure to upload occurse
1925:
1926:
1927: sub userfileupload {
1928: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
1929: $destudom,$thumbwidth,$thumbheight)=@_;
1930: if (!defined($subdir)) { $subdir='unknown'; }
1931: my $fname=$env{'form.'.$formname.'.filename'};
1932: $fname=&clean_filename($fname);
1933: # See if there is anything left
1934: unless ($fname) { return 'error: no uploaded file'; }
1935: chop($env{'form.'.$formname});
1936: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1937: my $now = time;
1938: my $filepath = 'tmp/helprequests/'.$now;
1939: my @parts=split(/\//,$filepath);
1940: my $fullpath = $perlvar{'lonDaemons'};
1941: for (my $i=0;$i<@parts;$i++) {
1942: $fullpath .= '/'.$parts[$i];
1943: if ((-e $fullpath)!=1) {
1944: mkdir($fullpath,0777);
1945: }
1946: }
1947: open(my $fh,'>'.$fullpath.'/'.$fname);
1948: print $fh $env{'form.'.$formname};
1949: close($fh);
1950: return $fullpath.'/'.$fname;
1951: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
1952: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
1953: '_'.$env{'user.domain'}.'/pending';
1954: my @parts=split(/\//,$filepath);
1955: my $fullpath = $perlvar{'lonDaemons'};
1956: for (my $i=0;$i<@parts;$i++) {
1957: $fullpath .= '/'.$parts[$i];
1958: if ((-e $fullpath)!=1) {
1959: mkdir($fullpath,0777);
1960: }
1961: }
1962: open(my $fh,'>'.$fullpath.'/'.$fname);
1963: print $fh $env{'form.'.$formname};
1964: close($fh);
1965: return $fullpath.'/'.$fname;
1966: }
1967:
1968: # Create the directory if not present
1969: $fname="$subdir/$fname";
1970: if ($coursedoc) {
1971: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1972: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1973: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
1974: return &finishuserfileupload($docuname,$docudom,
1975: $formname,$fname,$parser,$allfiles,
1976: $codebase,$thumbwidth,$thumbheight);
1977: } else {
1978: $fname=$env{'form.folder'}.'/'.$fname;
1979: return &process_coursefile('uploaddoc',$docuname,$docudom,
1980: $fname,$formname,$parser,
1981: $allfiles,$codebase);
1982: }
1983: } elsif (defined($destuname)) {
1984: my $docuname=$destuname;
1985: my $docudom=$destudom;
1986: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1987: $parser,$allfiles,$codebase,
1988: $thumbwidth,$thumbheight);
1989:
1990: } else {
1991: my $docuname=$env{'user.name'};
1992: my $docudom=$env{'user.domain'};
1993: if (exists($env{'form.group'})) {
1994: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1995: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1996: }
1997: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1998: $parser,$allfiles,$codebase,
1999: $thumbwidth,$thumbheight);
2000: }
2001: }
2002:
2003: sub finishuserfileupload {
2004: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2005: $thumbwidth,$thumbheight) = @_;
2006: my $path=$docudom.'/'.$docuname.'/';
2007: my $filepath=$perlvar{'lonDocRoot'};
2008: my ($fnamepath,$file,$fetchthumb);
2009: $file=$fname;
2010: if ($fname=~m|/|) {
2011: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2012: $path.=$fnamepath.'/';
2013: }
2014: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2015: my $count;
2016: for ($count=4;$count<=$#parts;$count++) {
2017: $filepath.="/$parts[$count]";
2018: if ((-e $filepath)!=1) {
2019: mkdir($filepath,0777);
2020: }
2021: }
2022: # Save the file
2023: {
2024: if (!open(FH,'>'.$filepath.'/'.$file)) {
2025: &logthis('Failed to create '.$filepath.'/'.$file);
2026: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2027: return '/adm/notfound.html';
2028: }
2029: if (!print FH ($env{'form.'.$formname})) {
2030: &logthis('Failed to write to '.$filepath.'/'.$file);
2031: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2032: return '/adm/notfound.html';
2033: }
2034: close(FH);
2035: }
2036: if ($parser eq 'parse') {
2037: my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,
2038: $codebase);
2039: unless ($parse_result eq 'ok') {
2040: &logthis('Failed to parse '.$filepath.$file.
2041: ' for embedded media: '.$parse_result);
2042: }
2043: }
2044: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2045: my $input = $filepath.'/'.$file;
2046: my $output = $filepath.'/'.'tn-'.$file;
2047: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2048: system("convert -sample $thumbsize $input $output");
2049: if (-e $filepath.'/'.'tn-'.$file) {
2050: $fetchthumb = 1;
2051: }
2052: }
2053:
2054: # Notify homeserver to grep it
2055: #
2056: my $docuhome=&homeserver($docuname,$docudom);
2057: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2058: if ($fetchresult eq 'ok') {
2059: if ($fetchthumb) {
2060: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2061: if ($thumbresult ne 'ok') {
2062: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2063: $docuhome.': '.$thumbresult);
2064: }
2065: }
2066: #
2067: # Return the URL to it
2068: return '/uploaded/'.$path.$file;
2069: } else {
2070: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2071: ': '.$fetchresult);
2072: return '/adm/notfound.html';
2073: }
2074: }
2075:
2076: sub extract_embedded_items {
2077: my ($filepath,$file,$allfiles,$codebase,$content) = @_;
2078: my @state = ();
2079: my %javafiles = (
2080: codebase => '',
2081: code => '',
2082: archive => ''
2083: );
2084: my %mediafiles = (
2085: src => '',
2086: movie => '',
2087: );
2088: my $p;
2089: if ($content) {
2090: $p = HTML::LCParser->new($content);
2091: } else {
2092: $p = HTML::LCParser->new($filepath.'/'.$file);
2093: }
2094: while (my $t=$p->get_token()) {
2095: if ($t->[0] eq 'S') {
2096: my ($tagname, $attr) = ($t->[1],$t->[2]);
2097: push(@state, $tagname);
2098: if (lc($tagname) eq 'allow') {
2099: &add_filetype($allfiles,$attr->{'src'},'src');
2100: }
2101: if (lc($tagname) eq 'img') {
2102: &add_filetype($allfiles,$attr->{'src'},'src');
2103: }
2104: if (lc($tagname) eq 'a') {
2105: &add_filetype($allfiles,$attr->{'href'},'href');
2106: }
2107: if (lc($tagname) eq 'script') {
2108: if ($attr->{'archive'} =~ /\.jar$/i) {
2109: &add_filetype($allfiles,$attr->{'archive'},'archive');
2110: } else {
2111: &add_filetype($allfiles,$attr->{'src'},'src');
2112: }
2113: }
2114: if (lc($tagname) eq 'link') {
2115: if (lc($attr->{'rel'}) eq 'stylesheet') {
2116: &add_filetype($allfiles,$attr->{'href'},'href');
2117: }
2118: }
2119: if (lc($tagname) eq 'object' ||
2120: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2121: foreach my $item (keys(%javafiles)) {
2122: $javafiles{$item} = '';
2123: }
2124: }
2125: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2126: my $name = lc($attr->{'name'});
2127: foreach my $item (keys(%javafiles)) {
2128: if ($name eq $item) {
2129: $javafiles{$item} = $attr->{'value'};
2130: last;
2131: }
2132: }
2133: foreach my $item (keys(%mediafiles)) {
2134: if ($name eq $item) {
2135: &add_filetype($allfiles, $attr->{'value'}, 'value');
2136: last;
2137: }
2138: }
2139: }
2140: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2141: foreach my $item (keys(%javafiles)) {
2142: if ($attr->{$item}) {
2143: $javafiles{$item} = $attr->{$item};
2144: last;
2145: }
2146: }
2147: foreach my $item (keys(%mediafiles)) {
2148: if ($attr->{$item}) {
2149: &add_filetype($allfiles,$attr->{$item},$item);
2150: last;
2151: }
2152: }
2153: }
2154: } elsif ($t->[0] eq 'E') {
2155: my ($tagname) = ($t->[1]);
2156: if ($javafiles{'codebase'} ne '') {
2157: $javafiles{'codebase'} .= '/';
2158: }
2159: if (lc($tagname) eq 'applet' ||
2160: lc($tagname) eq 'object' ||
2161: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2162: ) {
2163: foreach my $item (keys(%javafiles)) {
2164: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2165: my $file=$javafiles{'codebase'}.$javafiles{$item};
2166: &add_filetype($allfiles,$file,$item);
2167: }
2168: }
2169: }
2170: pop @state;
2171: }
2172: }
2173: return 'ok';
2174: }
2175:
2176: sub add_filetype {
2177: my ($allfiles,$file,$type)=@_;
2178: if (exists($allfiles->{$file})) {
2179: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2180: push(@{$allfiles->{$file}}, &escape($type));
2181: }
2182: } else {
2183: @{$allfiles->{$file}} = (&escape($type));
2184: }
2185: }
2186:
2187: sub removeuploadedurl {
2188: my ($url)=@_;
2189: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2190: return &removeuserfile($uname,$udom,$fname);
2191: }
2192:
2193: sub removeuserfile {
2194: my ($docuname,$docudom,$fname)=@_;
2195: my $home=&homeserver($docuname,$docudom);
2196: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2197: if ($result eq 'ok') {
2198: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2199: my $metafile = $fname.'.meta';
2200: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2201: my $url = "/uploaded/$docudom/$docuname/$fname";
2202: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2203: my $sqlresult =
2204: &update_portfolio_table($docuname,$docudom,$file,
2205: 'portfolio_metadata',$group,
2206: 'delete');
2207: }
2208: }
2209: return $result;
2210: }
2211:
2212: sub mkdiruserfile {
2213: my ($docuname,$docudom,$dir)=@_;
2214: my $home=&homeserver($docuname,$docudom);
2215: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2216: }
2217:
2218: sub renameuserfile {
2219: my ($docuname,$docudom,$old,$new)=@_;
2220: my $home=&homeserver($docuname,$docudom);
2221: my $result = &reply("renameuserfile:$docudom:$docuname:".
2222: &escape("$old").':'.&escape("$new"),$home);
2223: if ($result eq 'ok') {
2224: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2225: my $oldmeta = $old.'.meta';
2226: my $newmeta = $new.'.meta';
2227: my $metaresult =
2228: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2229: my $url = "/uploaded/$docudom/$docuname/$old";
2230: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2231: my $sqlresult =
2232: &update_portfolio_table($docuname,$docudom,$file,
2233: 'portfolio_metadata',$group,
2234: 'delete');
2235: }
2236: }
2237: return $result;
2238: }
2239:
2240: # ------------------------------------------------------------------------- Log
2241:
2242: sub log {
2243: my ($dom,$nam,$hom,$what)=@_;
2244: return critical("log:$dom:$nam:$what",$hom);
2245: }
2246:
2247: # ------------------------------------------------------------------ Course Log
2248: #
2249: # This routine flushes several buffers of non-mission-critical nature
2250: #
2251:
2252: sub flushcourselogs {
2253: &logthis('Flushing log buffers');
2254: #
2255: # course logs
2256: # This is a log of all transactions in a course, which can be used
2257: # for data mining purposes
2258: #
2259: # It also collects the courseid database, which lists last transaction
2260: # times and course titles for all courseids
2261: #
2262: my %courseidbuffer=();
2263: foreach my $crsid (keys(%courselogs)) {
2264: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2265: &escape($courselogs{$crsid}),
2266: $coursehombuf{$crsid}) eq 'ok') {
2267: delete $courselogs{$crsid};
2268: } else {
2269: &logthis('Failed to flush log buffer for '.$crsid);
2270: if (length($courselogs{$crsid})>40000) {
2271: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2272: " exceeded maximum size, deleting.</font>");
2273: delete $courselogs{$crsid};
2274: }
2275: }
2276: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2277: 'description' => $coursedescrbuf{$crsid},
2278: 'inst_code' => $courseinstcodebuf{$crsid},
2279: 'type' => $coursetypebuf{$crsid},
2280: 'owner' => $courseownerbuf{$crsid},
2281: };
2282: }
2283: #
2284: # Write course id database (reverse lookup) to homeserver of courses
2285: # Is used in pickcourse
2286: #
2287: foreach my $crs_home (keys(%courseidbuffer)) {
2288: my $response = &courseidput(&host_domain($crs_home),
2289: $courseidbuffer{$crs_home},
2290: $crs_home,'timeonly');
2291: }
2292: #
2293: # File accesses
2294: # Writes to the dynamic metadata of resources to get hit counts, etc.
2295: #
2296: foreach my $entry (keys(%accesshash)) {
2297: if ($entry =~ /___count$/) {
2298: my ($dom,$name);
2299: ($dom,$name,undef)=
2300: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2301: if (! defined($dom) || $dom eq '' ||
2302: ! defined($name) || $name eq '') {
2303: my $cid = $env{'request.course.id'};
2304: $dom = $env{'request.'.$cid.'.domain'};
2305: $name = $env{'request.'.$cid.'.num'};
2306: }
2307: my $value = $accesshash{$entry};
2308: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2309: my %temphash=($url => $value);
2310: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2311: if ($result eq 'ok') {
2312: delete $accesshash{$entry};
2313: } elsif ($result eq 'unknown_cmd') {
2314: # Target server has old code running on it.
2315: my %temphash=($entry => $value);
2316: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2317: delete $accesshash{$entry};
2318: }
2319: }
2320: } else {
2321: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2322: my %temphash=($entry => $accesshash{$entry});
2323: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2324: delete $accesshash{$entry};
2325: }
2326: }
2327: }
2328: #
2329: # Roles
2330: # Reverse lookup of user roles for course faculty/staff and co-authorship
2331: #
2332: foreach my $entry (keys(%userrolehash)) {
2333: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2334: split(/\:/,$entry);
2335: if (&Apache::lonnet::put('nohist_userroles',
2336: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2337: $rudom,$runame) eq 'ok') {
2338: delete $userrolehash{$entry};
2339: }
2340: }
2341: #
2342: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2343: #
2344: my %domrolebuffer = ();
2345: foreach my $entry (keys %domainrolehash) {
2346: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2347: if ($domrolebuffer{$rudom}) {
2348: $domrolebuffer{$rudom}.='&'.&escape($entry).
2349: '='.&escape($domainrolehash{$entry});
2350: } else {
2351: $domrolebuffer{$rudom}.=&escape($entry).
2352: '='.&escape($domainrolehash{$entry});
2353: }
2354: delete $domainrolehash{$entry};
2355: }
2356: foreach my $dom (keys(%domrolebuffer)) {
2357: my %servers = &get_servers($dom,'library');
2358: foreach my $tryserver (keys(%servers)) {
2359: unless (&reply('domroleput:'.$dom.':'.
2360: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2361: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2362: }
2363: }
2364: }
2365: $dumpcount++;
2366: }
2367:
2368: sub courselog {
2369: my $what=shift;
2370: $what=time.':'.$what;
2371: unless ($env{'request.course.id'}) { return ''; }
2372: $coursedombuf{$env{'request.course.id'}}=
2373: $env{'course.'.$env{'request.course.id'}.'.domain'};
2374: $coursenumbuf{$env{'request.course.id'}}=
2375: $env{'course.'.$env{'request.course.id'}.'.num'};
2376: $coursehombuf{$env{'request.course.id'}}=
2377: $env{'course.'.$env{'request.course.id'}.'.home'};
2378: $coursedescrbuf{$env{'request.course.id'}}=
2379: $env{'course.'.$env{'request.course.id'}.'.description'};
2380: $courseinstcodebuf{$env{'request.course.id'}}=
2381: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2382: $courseownerbuf{$env{'request.course.id'}}=
2383: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2384: $coursetypebuf{$env{'request.course.id'}}=
2385: $env{'course.'.$env{'request.course.id'}.'.type'};
2386: if (defined $courselogs{$env{'request.course.id'}}) {
2387: $courselogs{$env{'request.course.id'}}.='&'.$what;
2388: } else {
2389: $courselogs{$env{'request.course.id'}}.=$what;
2390: }
2391: if (length($courselogs{$env{'request.course.id'}})>4048) {
2392: &flushcourselogs();
2393: }
2394: }
2395:
2396: sub courseacclog {
2397: my $fnsymb=shift;
2398: unless ($env{'request.course.id'}) { return ''; }
2399: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2400: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2401: $what.=':POST';
2402: # FIXME: Probably ought to escape things....
2403: foreach my $key (keys(%env)) {
2404: if ($key=~/^form\.(.*)/) {
2405: $what.=':'.$1.'='.$env{$key};
2406: }
2407: }
2408: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2409: # FIXME: We should not be depending on a form parameter that someone
2410: # editing lonsearchcat.pm might change in the future.
2411: if ($env{'form.phase'} eq 'course_search') {
2412: $what.= ':POST';
2413: # FIXME: Probably ought to escape things....
2414: foreach my $element ('courseexp','crsfulltext','crsrelated',
2415: 'crsdiscuss') {
2416: $what.=':'.$element.'='.$env{'form.'.$element};
2417: }
2418: }
2419: }
2420: &courselog($what);
2421: }
2422:
2423: sub countacc {
2424: my $url=&declutter(shift);
2425: return if (! defined($url) || $url eq '');
2426: unless ($env{'request.course.id'}) { return ''; }
2427: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2428: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2429: $accesshash{$key}++;
2430: }
2431:
2432: sub linklog {
2433: my ($from,$to)=@_;
2434: $from=&declutter($from);
2435: $to=&declutter($to);
2436: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2437: $accesshash{$to.'___'.$from.'___goto'}=1;
2438: }
2439:
2440: sub userrolelog {
2441: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2442: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2443: ($trole=~/^in/) || ($trole=~/^cc/) ||
2444: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2445: ($trole=~/^ta/)) {
2446: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2447: $userrolehash
2448: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2449: =$tend.':'.$tstart;
2450: }
2451: if (($env{'request.role'} =~ /dc\./) &&
2452: (($trole=~/^au/) || ($trole=~/^in/) ||
2453: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2454: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2455: $userrolehash
2456: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2457: =$tend.':'.$tstart;
2458: }
2459: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2460: ($trole=~/^li/) || ($trole=~/^li/) ||
2461: ($trole=~/^au/) || ($trole=~/^dg/) ||
2462: ($trole=~/^sc/)) {
2463: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2464: $domainrolehash
2465: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2466: = $tend.':'.$tstart;
2467: }
2468: }
2469:
2470: sub get_course_adv_roles {
2471: my ($cid,$codes) = @_;
2472: $cid=$env{'request.course.id'} unless (defined($cid));
2473: my %coursehash=&coursedescription($cid);
2474: my %nothide=();
2475: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2476: if ($user !~ /:/) {
2477: $nothide{join(':',split(/[\@]/,$user))}=1;
2478: } else {
2479: $nothide{$user}=1;
2480: }
2481: }
2482: my %returnhash=();
2483: my %dumphash=
2484: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2485: my $now=time;
2486: foreach my $entry (keys %dumphash) {
2487: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2488: if (($tstart) && ($tstart<0)) { next; }
2489: if (($tend) && ($tend<$now)) { next; }
2490: if (($tstart) && ($now<$tstart)) { next; }
2491: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2492: if ($username eq '' || $domain eq '') { next; }
2493: if ((&privileged($username,$domain)) &&
2494: (!$nothide{$username.':'.$domain})) { next; }
2495: if ($role eq 'cr') { next; }
2496: if ($codes) {
2497: if ($section) { $role .= ':'.$section; }
2498: if ($returnhash{$role}) {
2499: $returnhash{$role}.=','.$username.':'.$domain;
2500: } else {
2501: $returnhash{$role}=$username.':'.$domain;
2502: }
2503: } else {
2504: my $key=&plaintext($role);
2505: if ($section) { $key.=' (Section '.$section.')'; }
2506: if ($returnhash{$key}) {
2507: $returnhash{$key}.=','.$username.':'.$domain;
2508: } else {
2509: $returnhash{$key}=$username.':'.$domain;
2510: }
2511: }
2512: }
2513: return %returnhash;
2514: }
2515:
2516: sub get_my_roles {
2517: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2518: unless (defined($uname)) { $uname=$env{'user.name'}; }
2519: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2520: my (%dumphash,%nothide);
2521: if ($context eq 'userroles') {
2522: %dumphash = &dump('roles',$udom,$uname);
2523: } else {
2524: %dumphash=
2525: &dump('nohist_userroles',$udom,$uname);
2526: if ($hidepriv) {
2527: my %coursehash=&coursedescription($udom.'_'.$uname);
2528: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2529: if ($user !~ /:/) {
2530: $nothide{join(':',split(/[\@]/,$user))} = 1;
2531: } else {
2532: $nothide{$user} = 1;
2533: }
2534: }
2535: }
2536: }
2537: my %returnhash=();
2538: my $now=time;
2539: foreach my $entry (keys(%dumphash)) {
2540: my ($role,$tend,$tstart);
2541: if ($context eq 'userroles') {
2542: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2543: } else {
2544: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2545: }
2546: if (($tstart) && ($tstart<0)) { next; }
2547: my $status = 'active';
2548: if (($tend) && ($tend<=$now)) {
2549: $status = 'previous';
2550: }
2551: if (($tstart) && ($now<$tstart)) {
2552: $status = 'future';
2553: }
2554: if (ref($types) eq 'ARRAY') {
2555: if (!grep(/^\Q$status\E$/,@{$types})) {
2556: next;
2557: }
2558: } else {
2559: if ($status ne 'active') {
2560: next;
2561: }
2562: }
2563: my ($rolecode,$username,$domain,$section,$area);
2564: if ($context eq 'userroles') {
2565: ($area,$rolecode) = split(/_/,$entry);
2566: (undef,$domain,$username,$section) = split(/\//,$area);
2567: } else {
2568: ($role,$username,$domain,$section) = split(/\:/,$entry);
2569: }
2570: if (ref($roledoms) eq 'ARRAY') {
2571: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2572: next;
2573: }
2574: }
2575: if (ref($roles) eq 'ARRAY') {
2576: if (!grep(/^\Q$role\E$/,@{$roles})) {
2577: if ($role =~ /^cr\//) {
2578: if (!grep(/^cr$/,@{$roles})) {
2579: next;
2580: }
2581: } else {
2582: next;
2583: }
2584: }
2585: }
2586: if ($hidepriv) {
2587: if ((&privileged($username,$domain)) &&
2588: (!$nothide{$username.':'.$domain})) {
2589: next;
2590: }
2591: }
2592: if ($withsec) {
2593: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2594: $tstart.':'.$tend;
2595: } else {
2596: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2597: }
2598: }
2599: return %returnhash;
2600: }
2601:
2602: # ----------------------------------------------------- Frontpage Announcements
2603: #
2604: #
2605:
2606: sub postannounce {
2607: my ($server,$text)=@_;
2608: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2609: unless ($text=~/\w/) { $text=''; }
2610: return &reply('setannounce:'.&escape($text),$server);
2611: }
2612:
2613: sub getannounce {
2614:
2615: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2616: my $announcement='';
2617: while (my $line = <$fh>) { $announcement .= $line; }
2618: close($fh);
2619: if ($announcement=~/\w/) {
2620: return
2621: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2622: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2623: } else {
2624: return '';
2625: }
2626: } else {
2627: return '';
2628: }
2629: }
2630:
2631: # ---------------------------------------------------------- Course ID routines
2632: # Deal with domain's nohist_courseid.db files
2633: #
2634:
2635: sub courseidput {
2636: my ($domain,$storehash,$coursehome,$caller) = @_;
2637: my $outcome;
2638: if ($caller eq 'timeonly') {
2639: my $cids = '';
2640: foreach my $item (keys(%$storehash)) {
2641: $cids.=&escape($item).'&';
2642: }
2643: $cids=~s/\&$//;
2644: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
2645: $coursehome);
2646: } else {
2647: my $items = '';
2648: foreach my $item (keys(%$storehash)) {
2649: $items.= &escape($item).'='.
2650: &freeze_escape($$storehash{$item}).'&';
2651: }
2652: $items=~s/\&$//;
2653: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
2654: $coursehome);
2655: }
2656: if ($outcome eq 'unknown_cmd') {
2657: my $what;
2658: foreach my $cid (keys(%$storehash)) {
2659: $what .= &escape($cid).'=';
2660: foreach my $item ('description','inst_code','owner','type') {
2661: $what .= &escape($storehash->{$cid}{$item}).':';
2662: }
2663: $what =~ s/\:$/&/;
2664: }
2665: $what =~ s/\&$//;
2666: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2667: } else {
2668: return $outcome;
2669: }
2670: }
2671:
2672: sub courseiddump {
2673: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
2674: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
2675: $selfenrollonly)=@_;
2676: my $as_hash = 1;
2677: my %returnhash;
2678: if (!$domfilter) { $domfilter=''; }
2679: my %libserv = &all_library();
2680: foreach my $tryserver (keys(%libserv)) {
2681: if ( ( $hostidflag == 1
2682: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2683: || (!defined($hostidflag)) ) {
2684:
2685: if (($domfilter eq '') ||
2686: (&host_domain($tryserver) eq $domfilter)) {
2687: my $rep =
2688: &reply('courseiddump:'.&host_domain($tryserver).':'.
2689: $sincefilter.':'.&escape($descfilter).':'.
2690: &escape($instcodefilter).':'.&escape($ownerfilter).
2691: ':'.&escape($coursefilter).':'.&escape($typefilter).
2692: ':'.&escape($regexp_ok).':'.$as_hash.':'.
2693: &escape($selfenrollonly),$tryserver);
2694: my @pairs=split(/\&/,$rep);
2695: foreach my $item (@pairs) {
2696: my ($key,$value)=split(/\=/,$item,2);
2697: $key = &unescape($key);
2698: next if ($key =~ /^error: 2 /);
2699: my $result = &thaw_unescape($value);
2700: if (ref($result) eq 'HASH') {
2701: $returnhash{$key}=$result;
2702: } else {
2703: my @responses = split(/:/,$value);
2704: my @items = ('description','inst_code','owner','type');
2705: for (my $i=0; $i<@responses; $i++) {
2706: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
2707: }
2708: }
2709: }
2710: }
2711: }
2712: }
2713: return %returnhash;
2714: }
2715:
2716: # ---------------------------------------------------------- DC e-mail
2717:
2718: sub dcmailput {
2719: my ($domain,$msgid,$message,$server)=@_;
2720: my $status = &Apache::lonnet::critical(
2721: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2722: &escape($message),$server);
2723: return $status;
2724: }
2725:
2726: sub dcmaildump {
2727: my ($dom,$startdate,$enddate,$senders) = @_;
2728: my %returnhash=();
2729:
2730: if (defined(&domain($dom,'primary'))) {
2731: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2732: &escape($enddate).':';
2733: my @esc_senders=map { &escape($_)} @$senders;
2734: $cmd.=&escape(join('&',@esc_senders));
2735: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2736: my ($key,$value) = split(/\=/,$line,2);
2737: if (($key) && ($value)) {
2738: $returnhash{&unescape($key)} = &unescape($value);
2739: }
2740: }
2741: }
2742: return %returnhash;
2743: }
2744: # ---------------------------------------------------------- Domain roles
2745:
2746: sub get_domain_roles {
2747: my ($dom,$roles,$startdate,$enddate)=@_;
2748: if (undef($startdate) || $startdate eq '') {
2749: $startdate = '.';
2750: }
2751: if (undef($enddate) || $enddate eq '') {
2752: $enddate = '.';
2753: }
2754: my $rolelist;
2755: if (ref($roles) eq 'ARRAY') {
2756: $rolelist = join(':',@{$roles});
2757: }
2758: my %personnel = ();
2759:
2760: my %servers = &get_servers($dom,'library');
2761: foreach my $tryserver (keys(%servers)) {
2762: %{$personnel{$tryserver}}=();
2763: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2764: &escape($startdate).':'.
2765: &escape($enddate).':'.
2766: &escape($rolelist), $tryserver))) {
2767: my ($key,$value) = split(/\=/,$line,2);
2768: if (($key) && ($value)) {
2769: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2770: }
2771: }
2772: }
2773: return %personnel;
2774: }
2775:
2776: # ----------------------------------------------------------- Check out an item
2777:
2778: sub get_first_access {
2779: my ($type,$argsymb)=@_;
2780: my ($symb,$courseid,$udom,$uname)=&whichuser();
2781: if ($argsymb) { $symb=$argsymb; }
2782: my ($map,$id,$res)=&decode_symb($symb);
2783: if ($type eq 'course') {
2784: $res='course';
2785: } elsif ($type eq 'map') {
2786: $res=&symbread($map);
2787: } else {
2788: $res=$symb;
2789: }
2790: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2791: return $times{"$courseid\0$res"};
2792: }
2793:
2794: sub set_first_access {
2795: my ($type)=@_;
2796: my ($symb,$courseid,$udom,$uname)=&whichuser();
2797: my ($map,$id,$res)=&decode_symb($symb);
2798: if ($type eq 'course') {
2799: $res='course';
2800: } elsif ($type eq 'map') {
2801: $res=&symbread($map);
2802: } else {
2803: $res=$symb;
2804: }
2805: my $firstaccess=&get_first_access($type,$symb);
2806: if (!$firstaccess) {
2807: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2808: }
2809: return 'already_set';
2810: }
2811:
2812: sub checkout {
2813: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2814: my $now=time;
2815: my $lonhost=$perlvar{'lonHostID'};
2816: my $infostr=&escape(
2817: 'CHECKOUTTOKEN&'.
2818: $tuname.'&'.
2819: $tudom.'&'.
2820: $tcrsid.'&'.
2821: $symb.'&'.
2822: $now.'&'.$ENV{'REMOTE_ADDR'});
2823: my $token=&reply('tmpput:'.$infostr,$lonhost);
2824: if ($token=~/^error\:/) {
2825: &logthis("<font color=\"blue\">WARNING: ".
2826: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2827: "</font>");
2828: return '';
2829: }
2830:
2831: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2832: $token=~tr/a-z/A-Z/;
2833:
2834: my %infohash=('resource.0.outtoken' => $token,
2835: 'resource.0.checkouttime' => $now,
2836: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2837:
2838: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2839: return '';
2840: } else {
2841: &logthis("<font color=\"blue\">WARNING: ".
2842: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2843: "</font>");
2844: }
2845:
2846: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2847: &escape('Checkout '.$infostr.' - '.
2848: $token)) ne 'ok') {
2849: return '';
2850: } else {
2851: &logthis("<font color=\"blue\">WARNING: ".
2852: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2853: "</font>");
2854: }
2855: return $token;
2856: }
2857:
2858: # ------------------------------------------------------------ Check in an item
2859:
2860: sub checkin {
2861: my $token=shift;
2862: my $now=time;
2863: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2864: $lonhost=~tr/A-Z/a-z/;
2865: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2866: $dtoken=~s/\W/\_/g;
2867: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2868: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2869:
2870: unless (($tuname) && ($tudom)) {
2871: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2872: return '';
2873: }
2874:
2875: unless (&allowed('mgr',$tcrsid)) {
2876: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
2877: $env{'user.name'}.' - '.$env{'user.domain'});
2878: return '';
2879: }
2880:
2881: my %infohash=('resource.0.intoken' => $token,
2882: 'resource.0.checkintime' => $now,
2883: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
2884:
2885: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2886: return '';
2887: }
2888:
2889: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2890: &escape('Checkin - '.$token)) ne 'ok') {
2891: return '';
2892: }
2893:
2894: return ($symb,$tuname,$tudom,$tcrsid);
2895: }
2896:
2897: # --------------------------------------------- Set Expire Date for Spreadsheet
2898:
2899: sub expirespread {
2900: my ($uname,$udom,$stype,$usymb)=@_;
2901: my $cid=$env{'request.course.id'};
2902: if ($cid) {
2903: my $now=time;
2904: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2905: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
2906: $env{'course.'.$cid.'.num'}.
2907: ':nohist_expirationdates:'.
2908: &escape($key).'='.$now,
2909: $env{'course.'.$cid.'.home'})
2910: }
2911: return 'ok';
2912: }
2913:
2914: # ----------------------------------------------------- Devalidate Spreadsheets
2915:
2916: sub devalidate {
2917: my ($symb,$uname,$udom)=@_;
2918: my $cid=$env{'request.course.id'};
2919: if ($cid) {
2920: # delete the stored spreadsheets for
2921: # - the student level sheet of this user in course's homespace
2922: # - the assessment level sheet for this resource
2923: # for this user in user's homespace
2924: # - current conditional state info
2925: my $key=$uname.':'.$udom.':';
2926: my $status=
2927: &del('nohist_calculatedsheets',
2928: [$key.'studentcalc:'],
2929: $env{'course.'.$cid.'.domain'},
2930: $env{'course.'.$cid.'.num'})
2931: .' '.
2932: &del('nohist_calculatedsheets_'.$cid,
2933: [$key.'assesscalc:'.$symb],$udom,$uname);
2934: unless ($status eq 'ok ok') {
2935: &logthis('Could not devalidate spreadsheet '.
2936: $uname.' at '.$udom.' for '.
2937: $symb.': '.$status);
2938: }
2939: &delenv('user.state.'.$cid);
2940: }
2941: }
2942:
2943: sub get_scalar {
2944: my ($string,$end) = @_;
2945: my $value;
2946: if ($$string =~ s/^([^&]*?)($end)/$2/) {
2947: $value = $1;
2948: } elsif ($$string =~ s/^([^&]*?)&//) {
2949: $value = $1;
2950: }
2951: return &unescape($value);
2952: }
2953:
2954: sub array2str {
2955: my (@array) = @_;
2956: my $result=&arrayref2str(\@array);
2957: $result=~s/^__ARRAY_REF__//;
2958: $result=~s/__END_ARRAY_REF__$//;
2959: return $result;
2960: }
2961:
2962: sub arrayref2str {
2963: my ($arrayref) = @_;
2964: my $result='__ARRAY_REF__';
2965: foreach my $elem (@$arrayref) {
2966: if(ref($elem) eq 'ARRAY') {
2967: $result.=&arrayref2str($elem).'&';
2968: } elsif(ref($elem) eq 'HASH') {
2969: $result.=&hashref2str($elem).'&';
2970: } elsif(ref($elem)) {
2971: #print("Got a ref of ".(ref($elem))." skipping.");
2972: } else {
2973: $result.=&escape($elem).'&';
2974: }
2975: }
2976: $result=~s/\&$//;
2977: $result .= '__END_ARRAY_REF__';
2978: return $result;
2979: }
2980:
2981: sub hash2str {
2982: my (%hash) = @_;
2983: my $result=&hashref2str(\%hash);
2984: $result=~s/^__HASH_REF__//;
2985: $result=~s/__END_HASH_REF__$//;
2986: return $result;
2987: }
2988:
2989: sub hashref2str {
2990: my ($hashref)=@_;
2991: my $result='__HASH_REF__';
2992: foreach my $key (sort(keys(%$hashref))) {
2993: if (ref($key) eq 'ARRAY') {
2994: $result.=&arrayref2str($key).'=';
2995: } elsif (ref($key) eq 'HASH') {
2996: $result.=&hashref2str($key).'=';
2997: } elsif (ref($key)) {
2998: $result.='=';
2999: #print("Got a ref of ".(ref($key))." skipping.");
3000: } else {
3001: if ($key) {$result.=&escape($key).'=';} else { last; }
3002: }
3003:
3004: if(ref($hashref->{$key}) eq 'ARRAY') {
3005: $result.=&arrayref2str($hashref->{$key}).'&';
3006: } elsif(ref($hashref->{$key}) eq 'HASH') {
3007: $result.=&hashref2str($hashref->{$key}).'&';
3008: } elsif(ref($hashref->{$key})) {
3009: $result.='&';
3010: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3011: } else {
3012: $result.=&escape($hashref->{$key}).'&';
3013: }
3014: }
3015: $result=~s/\&$//;
3016: $result .= '__END_HASH_REF__';
3017: return $result;
3018: }
3019:
3020: sub str2hash {
3021: my ($string)=@_;
3022: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3023: return %$hash;
3024: }
3025:
3026: sub str2hashref {
3027: my ($string) = @_;
3028:
3029: my %hash;
3030:
3031: if($string !~ /^__HASH_REF__/) {
3032: if (! ($string eq '' || !defined($string))) {
3033: $hash{'error'}='Not hash reference';
3034: }
3035: return (\%hash, $string);
3036: }
3037:
3038: $string =~ s/^__HASH_REF__//;
3039:
3040: while($string !~ /^__END_HASH_REF__/) {
3041: #key
3042: my $key='';
3043: if($string =~ /^__HASH_REF__/) {
3044: ($key, $string)=&str2hashref($string);
3045: if(defined($key->{'error'})) {
3046: $hash{'error'}='Bad data';
3047: return (\%hash, $string);
3048: }
3049: } elsif($string =~ /^__ARRAY_REF__/) {
3050: ($key, $string)=&str2arrayref($string);
3051: if($key->[0] eq 'Array reference error') {
3052: $hash{'error'}='Bad data';
3053: return (\%hash, $string);
3054: }
3055: } else {
3056: $string =~ s/^(.*?)=//;
3057: $key=&unescape($1);
3058: }
3059: $string =~ s/^=//;
3060:
3061: #value
3062: my $value='';
3063: if($string =~ /^__HASH_REF__/) {
3064: ($value, $string)=&str2hashref($string);
3065: if(defined($value->{'error'})) {
3066: $hash{'error'}='Bad data';
3067: return (\%hash, $string);
3068: }
3069: } elsif($string =~ /^__ARRAY_REF__/) {
3070: ($value, $string)=&str2arrayref($string);
3071: if($value->[0] eq 'Array reference error') {
3072: $hash{'error'}='Bad data';
3073: return (\%hash, $string);
3074: }
3075: } else {
3076: $value=&get_scalar(\$string,'__END_HASH_REF__');
3077: }
3078: $string =~ s/^&//;
3079:
3080: $hash{$key}=$value;
3081: }
3082:
3083: $string =~ s/^__END_HASH_REF__//;
3084:
3085: return (\%hash, $string);
3086: }
3087:
3088: sub str2array {
3089: my ($string)=@_;
3090: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3091: return @$array;
3092: }
3093:
3094: sub str2arrayref {
3095: my ($string) = @_;
3096: my @array;
3097:
3098: if($string !~ /^__ARRAY_REF__/) {
3099: if (! ($string eq '' || !defined($string))) {
3100: $array[0]='Array reference error';
3101: }
3102: return (\@array, $string);
3103: }
3104:
3105: $string =~ s/^__ARRAY_REF__//;
3106:
3107: while($string !~ /^__END_ARRAY_REF__/) {
3108: my $value='';
3109: if($string =~ /^__HASH_REF__/) {
3110: ($value, $string)=&str2hashref($string);
3111: if(defined($value->{'error'})) {
3112: $array[0] ='Array reference error';
3113: return (\@array, $string);
3114: }
3115: } elsif($string =~ /^__ARRAY_REF__/) {
3116: ($value, $string)=&str2arrayref($string);
3117: if($value->[0] eq 'Array reference error') {
3118: $array[0] ='Array reference error';
3119: return (\@array, $string);
3120: }
3121: } else {
3122: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3123: }
3124: $string =~ s/^&//;
3125:
3126: push(@array, $value);
3127: }
3128:
3129: $string =~ s/^__END_ARRAY_REF__//;
3130:
3131: return (\@array, $string);
3132: }
3133:
3134: # -------------------------------------------------------------------Temp Store
3135:
3136: sub tmpreset {
3137: my ($symb,$namespace,$domain,$stuname) = @_;
3138: if (!$symb) {
3139: $symb=&symbread();
3140: if (!$symb) { $symb= $env{'request.url'}; }
3141: }
3142: $symb=escape($symb);
3143:
3144: if (!$namespace) { $namespace=$env{'request.state'}; }
3145: $namespace=~s/\//\_/g;
3146: $namespace=~s/\W//g;
3147:
3148: if (!$domain) { $domain=$env{'user.domain'}; }
3149: if (!$stuname) { $stuname=$env{'user.name'}; }
3150: if ($domain eq 'public' && $stuname eq 'public') {
3151: $stuname=$ENV{'REMOTE_ADDR'};
3152: }
3153: my $path=$perlvar{'lonDaemons'}.'/tmp';
3154: my %hash;
3155: if (tie(%hash,'GDBM_File',
3156: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3157: &GDBM_WRCREAT(),0640)) {
3158: foreach my $key (keys %hash) {
3159: if ($key=~ /:$symb/) {
3160: delete($hash{$key});
3161: }
3162: }
3163: }
3164: }
3165:
3166: sub tmpstore {
3167: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3168:
3169: if (!$symb) {
3170: $symb=&symbread();
3171: if (!$symb) { $symb= $env{'request.url'}; }
3172: }
3173: $symb=escape($symb);
3174:
3175: if (!$namespace) {
3176: # I don't think we would ever want to store this for a course.
3177: # it seems this will only be used if we don't have a course.
3178: #$namespace=$env{'request.course.id'};
3179: #if (!$namespace) {
3180: $namespace=$env{'request.state'};
3181: #}
3182: }
3183: $namespace=~s/\//\_/g;
3184: $namespace=~s/\W//g;
3185: if (!$domain) { $domain=$env{'user.domain'}; }
3186: if (!$stuname) { $stuname=$env{'user.name'}; }
3187: if ($domain eq 'public' && $stuname eq 'public') {
3188: $stuname=$ENV{'REMOTE_ADDR'};
3189: }
3190: my $now=time;
3191: my %hash;
3192: my $path=$perlvar{'lonDaemons'}.'/tmp';
3193: if (tie(%hash,'GDBM_File',
3194: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3195: &GDBM_WRCREAT(),0640)) {
3196: $hash{"version:$symb"}++;
3197: my $version=$hash{"version:$symb"};
3198: my $allkeys='';
3199: foreach my $key (keys(%$storehash)) {
3200: $allkeys.=$key.':';
3201: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3202: }
3203: $hash{"$version:$symb:timestamp"}=$now;
3204: $allkeys.='timestamp';
3205: $hash{"$version:keys:$symb"}=$allkeys;
3206: if (untie(%hash)) {
3207: return 'ok';
3208: } else {
3209: return "error:$!";
3210: }
3211: } else {
3212: return "error:$!";
3213: }
3214: }
3215:
3216: # -----------------------------------------------------------------Temp Restore
3217:
3218: sub tmprestore {
3219: my ($symb,$namespace,$domain,$stuname) = @_;
3220:
3221: if (!$symb) {
3222: $symb=&symbread();
3223: if (!$symb) { $symb= $env{'request.url'}; }
3224: }
3225: $symb=escape($symb);
3226:
3227: if (!$namespace) { $namespace=$env{'request.state'}; }
3228:
3229: if (!$domain) { $domain=$env{'user.domain'}; }
3230: if (!$stuname) { $stuname=$env{'user.name'}; }
3231: if ($domain eq 'public' && $stuname eq 'public') {
3232: $stuname=$ENV{'REMOTE_ADDR'};
3233: }
3234: my %returnhash;
3235: $namespace=~s/\//\_/g;
3236: $namespace=~s/\W//g;
3237: my %hash;
3238: my $path=$perlvar{'lonDaemons'}.'/tmp';
3239: if (tie(%hash,'GDBM_File',
3240: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3241: &GDBM_READER(),0640)) {
3242: my $version=$hash{"version:$symb"};
3243: $returnhash{'version'}=$version;
3244: my $scope;
3245: for ($scope=1;$scope<=$version;$scope++) {
3246: my $vkeys=$hash{"$scope:keys:$symb"};
3247: my @keys=split(/:/,$vkeys);
3248: my $key;
3249: $returnhash{"$scope:keys"}=$vkeys;
3250: foreach $key (@keys) {
3251: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3252: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3253: }
3254: }
3255: if (!(untie(%hash))) {
3256: return "error:$!";
3257: }
3258: } else {
3259: return "error:$!";
3260: }
3261: return %returnhash;
3262: }
3263:
3264: # ----------------------------------------------------------------------- Store
3265:
3266: sub store {
3267: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3268: my $home='';
3269:
3270: if ($stuname) { $home=&homeserver($stuname,$domain); }
3271:
3272: $symb=&symbclean($symb);
3273: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3274:
3275: if (!$domain) { $domain=$env{'user.domain'}; }
3276: if (!$stuname) { $stuname=$env{'user.name'}; }
3277:
3278: &devalidate($symb,$stuname,$domain);
3279:
3280: $symb=escape($symb);
3281: if (!$namespace) {
3282: unless ($namespace=$env{'request.course.id'}) {
3283: return '';
3284: }
3285: }
3286: if (!$home) { $home=$env{'user.home'}; }
3287:
3288: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3289: $$storehash{'host'}=$perlvar{'lonHostID'};
3290:
3291: my $namevalue='';
3292: foreach my $key (keys(%$storehash)) {
3293: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3294: }
3295: $namevalue=~s/\&$//;
3296: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3297: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3298: }
3299:
3300: # -------------------------------------------------------------- Critical Store
3301:
3302: sub cstore {
3303: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3304: my $home='';
3305:
3306: if ($stuname) { $home=&homeserver($stuname,$domain); }
3307:
3308: $symb=&symbclean($symb);
3309: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3310:
3311: if (!$domain) { $domain=$env{'user.domain'}; }
3312: if (!$stuname) { $stuname=$env{'user.name'}; }
3313:
3314: &devalidate($symb,$stuname,$domain);
3315:
3316: $symb=escape($symb);
3317: if (!$namespace) {
3318: unless ($namespace=$env{'request.course.id'}) {
3319: return '';
3320: }
3321: }
3322: if (!$home) { $home=$env{'user.home'}; }
3323:
3324: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3325: $$storehash{'host'}=$perlvar{'lonHostID'};
3326:
3327: my $namevalue='';
3328: foreach my $key (keys(%$storehash)) {
3329: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3330: }
3331: $namevalue=~s/\&$//;
3332: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3333: return critical
3334: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3335: }
3336:
3337: # --------------------------------------------------------------------- Restore
3338:
3339: sub restore {
3340: my ($symb,$namespace,$domain,$stuname) = @_;
3341: my $home='';
3342:
3343: if ($stuname) { $home=&homeserver($stuname,$domain); }
3344:
3345: if (!$symb) {
3346: unless ($symb=escape(&symbread())) { return ''; }
3347: } else {
3348: $symb=&escape(&symbclean($symb));
3349: }
3350: if (!$namespace) {
3351: unless ($namespace=$env{'request.course.id'}) {
3352: return '';
3353: }
3354: }
3355: if (!$domain) { $domain=$env{'user.domain'}; }
3356: if (!$stuname) { $stuname=$env{'user.name'}; }
3357: if (!$home) { $home=$env{'user.home'}; }
3358: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3359:
3360: my %returnhash=();
3361: foreach my $line (split(/\&/,$answer)) {
3362: my ($name,$value)=split(/\=/,$line);
3363: $returnhash{&unescape($name)}=&thaw_unescape($value);
3364: }
3365: my $version;
3366: for ($version=1;$version<=$returnhash{'version'};$version++) {
3367: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3368: $returnhash{$item}=$returnhash{$version.':'.$item};
3369: }
3370: }
3371: return %returnhash;
3372: }
3373:
3374: # ---------------------------------------------------------- Course Description
3375:
3376: sub coursedescription {
3377: my ($courseid,$args)=@_;
3378: $courseid=~s/^\///;
3379: $courseid=~s/\_/\//g;
3380: my ($cdomain,$cnum)=split(/\//,$courseid);
3381: my $chome=&homeserver($cnum,$cdomain);
3382: my $normalid=$cdomain.'_'.$cnum;
3383: # need to always cache even if we get errors otherwise we keep
3384: # trying and trying and trying to get the course description.
3385: my %envhash=();
3386: my %returnhash=();
3387:
3388: my $expiretime=600;
3389: if ($env{'request.course.id'} eq $normalid) {
3390: $expiretime=120;
3391: }
3392:
3393: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3394: if (!$args->{'freshen_cache'}
3395: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3396: foreach my $key (keys(%env)) {
3397: next if ($key !~ /^\Q$prefix\E(.*)/);
3398: my ($setting) = $1;
3399: $returnhash{$setting} = $env{$key};
3400: }
3401: return %returnhash;
3402: }
3403:
3404: # get the data agin
3405: if (!$args->{'one_time'}) {
3406: $envhash{'course.'.$normalid.'.last_cache'}=time;
3407: }
3408:
3409: if ($chome ne 'no_host') {
3410: %returnhash=&dump('environment',$cdomain,$cnum);
3411: if (!exists($returnhash{'con_lost'})) {
3412: $returnhash{'home'}= $chome;
3413: $returnhash{'domain'} = $cdomain;
3414: $returnhash{'num'} = $cnum;
3415: if (!defined($returnhash{'type'})) {
3416: $returnhash{'type'} = 'Course';
3417: }
3418: while (my ($name,$value) = each %returnhash) {
3419: $envhash{'course.'.$normalid.'.'.$name}=$value;
3420: }
3421: $returnhash{'url'}=&clutter($returnhash{'url'});
3422: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3423: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3424: $envhash{'course.'.$normalid.'.home'}=$chome;
3425: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3426: $envhash{'course.'.$normalid.'.num'}=$cnum;
3427: }
3428: }
3429: if (!$args->{'one_time'}) {
3430: &appenv(\%envhash);
3431: }
3432: return %returnhash;
3433: }
3434:
3435: # -------------------------------------------------See if a user is privileged
3436:
3437: sub privileged {
3438: my ($username,$domain)=@_;
3439: my $rolesdump=&reply("dump:$domain:$username:roles",
3440: &homeserver($username,$domain));
3441: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3442: my $now=time;
3443: if ($rolesdump ne '') {
3444: foreach my $entry (split(/&/,$rolesdump)) {
3445: if ($entry!~/^rolesdef_/) {
3446: my ($area,$role)=split(/=/,$entry);
3447: $area=~s/\_\w\w$//;
3448: my ($trole,$tend,$tstart)=split(/_/,$role);
3449: if (($trole eq 'dc') || ($trole eq 'su')) {
3450: my $active=1;
3451: if ($tend) {
3452: if ($tend<$now) { $active=0; }
3453: }
3454: if ($tstart) {
3455: if ($tstart>$now) { $active=0; }
3456: }
3457: if ($active) { return 1; }
3458: }
3459: }
3460: }
3461: }
3462: return 0;
3463: }
3464:
3465: # -------------------------------------------------------- Get user privileges
3466:
3467: sub rolesinit {
3468: my ($domain,$username,$authhost)=@_;
3469: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3470: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
3471: my %allroles=();
3472: my %allgroups=();
3473: my $now=time;
3474: my %userroles = ('user.login.time' => $now);
3475: my $group_privs;
3476:
3477: if ($rolesdump ne '') {
3478: foreach my $entry (split(/&/,$rolesdump)) {
3479: if ($entry!~/^rolesdef_/) {
3480: my ($area,$role)=split(/=/,$entry);
3481: $area=~s/\_\w\w$//;
3482: my ($trole,$tend,$tstart,$group_privs);
3483: if ($role=~/^cr/) {
3484: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3485: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3486: ($tend,$tstart)=split('_',$trest);
3487: } else {
3488: $trole=$role;
3489: }
3490: } elsif ($role =~ m|^gr/|) {
3491: ($trole,$tend,$tstart) = split(/_/,$role);
3492: ($trole,$group_privs) = split(/\//,$trole);
3493: $group_privs = &unescape($group_privs);
3494: } else {
3495: ($trole,$tend,$tstart)=split(/_/,$role);
3496: }
3497: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3498: $username);
3499: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3500: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3501: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3502: if (($area ne '') && ($trole ne '')) {
3503: my $spec=$trole.'.'.$area;
3504: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3505: if ($trole =~ /^cr\//) {
3506: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3507: } elsif ($trole eq 'gr') {
3508: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3509: } else {
3510: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3511: }
3512: }
3513: }
3514: }
3515: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3516: $userroles{'user.adv'} = $adv;
3517: $userroles{'user.author'} = $author;
3518: $env{'user.adv'}=$adv;
3519: }
3520: return \%userroles;
3521: }
3522:
3523: sub set_arearole {
3524: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3525: # log the associated role with the area
3526: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3527: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3528: }
3529:
3530: sub custom_roleprivs {
3531: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3532: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3533: my $homsvr=homeserver($rauthor,$rdomain);
3534: if (&hostname($homsvr) ne '') {
3535: my ($rdummy,$roledef)=
3536: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3537: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3538: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3539: if (defined($syspriv)) {
3540: $$allroles{'cm./'}.=':'.$syspriv;
3541: $$allroles{$spec.'./'}.=':'.$syspriv;
3542: }
3543: if ($tdomain ne '') {
3544: if (defined($dompriv)) {
3545: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3546: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3547: }
3548: if (($trest ne '') && (defined($coursepriv))) {
3549: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3550: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3551: }
3552: }
3553: }
3554: }
3555: }
3556:
3557: sub group_roleprivs {
3558: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3559: my $access = 1;
3560: my $now = time;
3561: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3562: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3563: if ($access) {
3564: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3565: $$allgroups{$course}{$group} .=':'.$group_privs;
3566: }
3567: }
3568:
3569: sub standard_roleprivs {
3570: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3571: if (defined($pr{$trole.':s'})) {
3572: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3573: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3574: }
3575: if ($tdomain ne '') {
3576: if (defined($pr{$trole.':d'})) {
3577: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3578: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3579: }
3580: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3581: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3582: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3583: }
3584: }
3585: }
3586:
3587: sub set_userprivs {
3588: my ($userroles,$allroles,$allgroups) = @_;
3589: my $author=0;
3590: my $adv=0;
3591: my %grouproles = ();
3592: if (keys(%{$allgroups}) > 0) {
3593: foreach my $role (keys %{$allroles}) {
3594: my ($trole,$area,$sec,$extendedarea);
3595: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3596: $trole = $1;
3597: $area = $2;
3598: $sec = $3;
3599: $extendedarea = $area.$sec;
3600: if (exists($$allgroups{$area})) {
3601: foreach my $group (keys(%{$$allgroups{$area}})) {
3602: my $spec = $trole.'.'.$extendedarea;
3603: $grouproles{$spec.'.'.$area.'/'.$group} =
3604: $$allgroups{$area}{$group};
3605: }
3606: }
3607: }
3608: }
3609: }
3610: foreach my $group (keys(%grouproles)) {
3611: $$allroles{$group} = $grouproles{$group};
3612: }
3613: foreach my $role (keys(%{$allroles})) {
3614: my %thesepriv;
3615: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3616: foreach my $item (split(/:/,$$allroles{$role})) {
3617: if ($item ne '') {
3618: my ($privilege,$restrictions)=split(/&/,$item);
3619: if ($restrictions eq '') {
3620: $thesepriv{$privilege}='F';
3621: } elsif ($thesepriv{$privilege} ne 'F') {
3622: $thesepriv{$privilege}.=$restrictions;
3623: }
3624: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3625: }
3626: }
3627: my $thesestr='';
3628: foreach my $priv (keys(%thesepriv)) {
3629: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3630: }
3631: $userroles->{'user.priv.'.$role} = $thesestr;
3632: }
3633: return ($author,$adv);
3634: }
3635:
3636: # --------------------------------------------------------------- get interface
3637:
3638: sub get {
3639: my ($namespace,$storearr,$udomain,$uname)=@_;
3640: my $items='';
3641: foreach my $item (@$storearr) {
3642: $items.=&escape($item).'&';
3643: }
3644: $items=~s/\&$//;
3645: if (!$udomain) { $udomain=$env{'user.domain'}; }
3646: if (!$uname) { $uname=$env{'user.name'}; }
3647: my $uhome=&homeserver($uname,$udomain);
3648:
3649: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3650: my @pairs=split(/\&/,$rep);
3651: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3652: return @pairs;
3653: }
3654: my %returnhash=();
3655: my $i=0;
3656: foreach my $item (@$storearr) {
3657: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3658: $i++;
3659: }
3660: return %returnhash;
3661: }
3662:
3663: # --------------------------------------------------------------- del interface
3664:
3665: sub del {
3666: my ($namespace,$storearr,$udomain,$uname)=@_;
3667: my $items='';
3668: foreach my $item (@$storearr) {
3669: $items.=&escape($item).'&';
3670: }
3671: $items=~s/\&$//;
3672: if (!$udomain) { $udomain=$env{'user.domain'}; }
3673: if (!$uname) { $uname=$env{'user.name'}; }
3674: my $uhome=&homeserver($uname,$udomain);
3675:
3676: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3677: }
3678:
3679: # -------------------------------------------------------------- dump interface
3680:
3681: sub dump {
3682: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3683: if (!$udomain) { $udomain=$env{'user.domain'}; }
3684: if (!$uname) { $uname=$env{'user.name'}; }
3685: my $uhome=&homeserver($uname,$udomain);
3686: if ($regexp) {
3687: $regexp=&escape($regexp);
3688: } else {
3689: $regexp='.';
3690: }
3691: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3692: my @pairs=split(/\&/,$rep);
3693: my %returnhash=();
3694: foreach my $item (@pairs) {
3695: my ($key,$value)=split(/=/,$item,2);
3696: $key = &unescape($key);
3697: next if ($key =~ /^error: 2 /);
3698: $returnhash{$key}=&thaw_unescape($value);
3699: }
3700: return %returnhash;
3701: }
3702:
3703: # --------------------------------------------------------- dumpstore interface
3704:
3705: sub dumpstore {
3706: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3707: if (!$udomain) { $udomain=$env{'user.domain'}; }
3708: if (!$uname) { $uname=$env{'user.name'}; }
3709: my $uhome=&homeserver($uname,$udomain);
3710: if ($regexp) {
3711: $regexp=&escape($regexp);
3712: } else {
3713: $regexp='.';
3714: }
3715: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3716: my @pairs=split(/\&/,$rep);
3717: my %returnhash=();
3718: foreach my $item (@pairs) {
3719: my ($key,$value)=split(/=/,$item,2);
3720: next if ($key =~ /^error: 2 /);
3721: $returnhash{$key}=&thaw_unescape($value);
3722: }
3723: return %returnhash;
3724: }
3725:
3726: # -------------------------------------------------------------- keys interface
3727:
3728: sub getkeys {
3729: my ($namespace,$udomain,$uname)=@_;
3730: if (!$udomain) { $udomain=$env{'user.domain'}; }
3731: if (!$uname) { $uname=$env{'user.name'}; }
3732: my $uhome=&homeserver($uname,$udomain);
3733: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3734: my @keyarray=();
3735: foreach my $key (split(/\&/,$rep)) {
3736: next if ($key =~ /^error: 2 /);
3737: push(@keyarray,&unescape($key));
3738: }
3739: return @keyarray;
3740: }
3741:
3742: # --------------------------------------------------------------- currentdump
3743: sub currentdump {
3744: my ($courseid,$sdom,$sname)=@_;
3745: $courseid = $env{'request.course.id'} if (! defined($courseid));
3746: $sdom = $env{'user.domain'} if (! defined($sdom));
3747: $sname = $env{'user.name'} if (! defined($sname));
3748: my $uhome = &homeserver($sname,$sdom);
3749: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3750: return if ($rep =~ /^(error:|no_such_host)/);
3751: #
3752: my %returnhash=();
3753: #
3754: if ($rep eq "unknown_cmd") {
3755: # an old lond will not know currentdump
3756: # Do a dump and make it look like a currentdump
3757: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3758: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3759: my %hash = @tmp;
3760: @tmp=();
3761: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3762: } else {
3763: my @pairs=split(/\&/,$rep);
3764: foreach my $pair (@pairs) {
3765: my ($key,$value)=split(/=/,$pair,2);
3766: my ($symb,$param) = split(/:/,$key);
3767: $returnhash{&unescape($symb)}->{&unescape($param)} =
3768: &thaw_unescape($value);
3769: }
3770: }
3771: return %returnhash;
3772: }
3773:
3774: sub convert_dump_to_currentdump{
3775: my %hash = %{shift()};
3776: my %returnhash;
3777: # Code ripped from lond, essentially. The only difference
3778: # here is the unescaping done by lonnet::dump(). Conceivably
3779: # we might run in to problems with parameter names =~ /^v\./
3780: while (my ($key,$value) = each(%hash)) {
3781: my ($v,$symb,$param) = split(/:/,$key);
3782: $symb = &unescape($symb);
3783: $param = &unescape($param);
3784: next if ($v eq 'version' || $symb eq 'keys');
3785: next if (exists($returnhash{$symb}) &&
3786: exists($returnhash{$symb}->{$param}) &&
3787: $returnhash{$symb}->{'v.'.$param} > $v);
3788: $returnhash{$symb}->{$param}=$value;
3789: $returnhash{$symb}->{'v.'.$param}=$v;
3790: }
3791: #
3792: # Remove all of the keys in the hashes which keep track of
3793: # the version of the parameter.
3794: while (my ($symb,$param_hash) = each(%returnhash)) {
3795: # use a foreach because we are going to delete from the hash.
3796: foreach my $key (keys(%$param_hash)) {
3797: delete($param_hash->{$key}) if ($key =~ /^v\./);
3798: }
3799: }
3800: return \%returnhash;
3801: }
3802:
3803: # ------------------------------------------------------ critical inc interface
3804:
3805: sub cinc {
3806: return &inc(@_,'critical');
3807: }
3808:
3809: # --------------------------------------------------------------- inc interface
3810:
3811: sub inc {
3812: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3813: if (!$udomain) { $udomain=$env{'user.domain'}; }
3814: if (!$uname) { $uname=$env{'user.name'}; }
3815: my $uhome=&homeserver($uname,$udomain);
3816: my $items='';
3817: if (! ref($store)) {
3818: # got a single value, so use that instead
3819: $items = &escape($store).'=&';
3820: } elsif (ref($store) eq 'SCALAR') {
3821: $items = &escape($$store).'=&';
3822: } elsif (ref($store) eq 'ARRAY') {
3823: $items = join('=&',map {&escape($_);} @{$store});
3824: } elsif (ref($store) eq 'HASH') {
3825: while (my($key,$value) = each(%{$store})) {
3826: $items.= &escape($key).'='.&escape($value).'&';
3827: }
3828: }
3829: $items=~s/\&$//;
3830: if ($critical) {
3831: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3832: } else {
3833: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3834: }
3835: }
3836:
3837: # --------------------------------------------------------------- put interface
3838:
3839: sub put {
3840: my ($namespace,$storehash,$udomain,$uname)=@_;
3841: if (!$udomain) { $udomain=$env{'user.domain'}; }
3842: if (!$uname) { $uname=$env{'user.name'}; }
3843: my $uhome=&homeserver($uname,$udomain);
3844: my $items='';
3845: foreach my $item (keys(%$storehash)) {
3846: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3847: }
3848: $items=~s/\&$//;
3849: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3850: }
3851:
3852: # ------------------------------------------------------------ newput interface
3853:
3854: sub newput {
3855: my ($namespace,$storehash,$udomain,$uname)=@_;
3856: if (!$udomain) { $udomain=$env{'user.domain'}; }
3857: if (!$uname) { $uname=$env{'user.name'}; }
3858: my $uhome=&homeserver($uname,$udomain);
3859: my $items='';
3860: foreach my $key (keys(%$storehash)) {
3861: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3862: }
3863: $items=~s/\&$//;
3864: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3865: }
3866:
3867: # --------------------------------------------------------- putstore interface
3868:
3869: sub putstore {
3870: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3871: if (!$udomain) { $udomain=$env{'user.domain'}; }
3872: if (!$uname) { $uname=$env{'user.name'}; }
3873: my $uhome=&homeserver($uname,$udomain);
3874: my $items='';
3875: foreach my $key (keys(%$storehash)) {
3876: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
3877: }
3878: $items=~s/\&$//;
3879: my $esc_symb=&escape($symb);
3880: my $esc_v=&escape($version);
3881: my $reply =
3882: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
3883: $uhome);
3884: if ($reply eq 'unknown_cmd') {
3885: # gfall back to way things use to be done
3886: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
3887: $uname);
3888: }
3889: return $reply;
3890: }
3891:
3892: sub old_putstore {
3893: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3894: if (!$udomain) { $udomain=$env{'user.domain'}; }
3895: if (!$uname) { $uname=$env{'user.name'}; }
3896: my $uhome=&homeserver($uname,$udomain);
3897: my %newstorehash;
3898: foreach my $item (keys(%$storehash)) {
3899: my $key = $version.':'.&escape($symb).':'.$item;
3900: $newstorehash{$key} = $storehash->{$item};
3901: }
3902: my $items='';
3903: my %allitems = ();
3904: foreach my $item (keys(%newstorehash)) {
3905: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
3906: my $key = $1.':keys:'.$2;
3907: $allitems{$key} .= $3.':';
3908: }
3909: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
3910: }
3911: foreach my $item (keys(%allitems)) {
3912: $allitems{$item} =~ s/\:$//;
3913: $items.= $item.'='.$allitems{$item}.'&';
3914: }
3915: $items=~s/\&$//;
3916: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3917: }
3918:
3919: # ------------------------------------------------------ critical put interface
3920:
3921: sub cput {
3922: my ($namespace,$storehash,$udomain,$uname)=@_;
3923: if (!$udomain) { $udomain=$env{'user.domain'}; }
3924: if (!$uname) { $uname=$env{'user.name'}; }
3925: my $uhome=&homeserver($uname,$udomain);
3926: my $items='';
3927: foreach my $item (keys(%$storehash)) {
3928: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3929: }
3930: $items=~s/\&$//;
3931: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
3932: }
3933:
3934: # -------------------------------------------------------------- eget interface
3935:
3936: sub eget {
3937: my ($namespace,$storearr,$udomain,$uname)=@_;
3938: my $items='';
3939: foreach my $item (@$storearr) {
3940: $items.=&escape($item).'&';
3941: }
3942: $items=~s/\&$//;
3943: if (!$udomain) { $udomain=$env{'user.domain'}; }
3944: if (!$uname) { $uname=$env{'user.name'}; }
3945: my $uhome=&homeserver($uname,$udomain);
3946: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
3947: my @pairs=split(/\&/,$rep);
3948: my %returnhash=();
3949: my $i=0;
3950: foreach my $item (@$storearr) {
3951: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3952: $i++;
3953: }
3954: return %returnhash;
3955: }
3956:
3957: # ------------------------------------------------------------ tmpput interface
3958: sub tmpput {
3959: my ($storehash,$server,$context)=@_;
3960: my $items='';
3961: foreach my $item (keys(%$storehash)) {
3962: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3963: }
3964: $items=~s/\&$//;
3965: if (defined($context)) {
3966: $items .= ':'.&escape($context);
3967: }
3968: return &reply("tmpput:$items",$server);
3969: }
3970:
3971: # ------------------------------------------------------------ tmpget interface
3972: sub tmpget {
3973: my ($token,$server)=@_;
3974: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3975: my $rep=&reply("tmpget:$token",$server);
3976: my %returnhash;
3977: foreach my $item (split(/\&/,$rep)) {
3978: my ($key,$value)=split(/=/,$item);
3979: next if ($key =~ /^error: 2 /);
3980: $returnhash{&unescape($key)}=&thaw_unescape($value);
3981: }
3982: return %returnhash;
3983: }
3984:
3985: # ------------------------------------------------------------ tmpget interface
3986: sub tmpdel {
3987: my ($token,$server)=@_;
3988: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3989: return &reply("tmpdel:$token",$server);
3990: }
3991:
3992: # -------------------------------------------------- portfolio access checking
3993:
3994: sub portfolio_access {
3995: my ($requrl) = @_;
3996: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
3997: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
3998: if ($result) {
3999: my %setters;
4000: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4001: my ($startblock,$endblock) =
4002: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4003: if ($startblock && $endblock) {
4004: return 'B';
4005: }
4006: } else {
4007: my ($startblock,$endblock) =
4008: &Apache::loncommon::blockcheck(\%setters,'port');
4009: if ($startblock && $endblock) {
4010: return 'B';
4011: }
4012: }
4013: }
4014: if ($result eq 'ok') {
4015: return 'F';
4016: } elsif ($result =~ /^[^:]+:guest_/) {
4017: return 'A';
4018: }
4019: return '';
4020: }
4021:
4022: sub get_portfolio_access {
4023: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4024:
4025: if (!ref($access_hash)) {
4026: my $current_perms = &get_portfile_permissions($udom,$unum);
4027: my %access_controls = &get_access_controls($current_perms,$group,
4028: $file_name);
4029: $access_hash = $access_controls{$file_name};
4030: }
4031:
4032: my ($public,$guest,@domains,@users,@courses,@groups);
4033: my $now = time;
4034: if (ref($access_hash) eq 'HASH') {
4035: foreach my $key (keys(%{$access_hash})) {
4036: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4037: if ($start > $now) {
4038: next;
4039: }
4040: if ($end && $end<$now) {
4041: next;
4042: }
4043: if ($scope eq 'public') {
4044: $public = $key;
4045: last;
4046: } elsif ($scope eq 'guest') {
4047: $guest = $key;
4048: } elsif ($scope eq 'domains') {
4049: push(@domains,$key);
4050: } elsif ($scope eq 'users') {
4051: push(@users,$key);
4052: } elsif ($scope eq 'course') {
4053: push(@courses,$key);
4054: } elsif ($scope eq 'group') {
4055: push(@groups,$key);
4056: }
4057: }
4058: if ($public) {
4059: return 'ok';
4060: }
4061: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4062: if ($guest) {
4063: return $guest;
4064: }
4065: } else {
4066: if (@domains > 0) {
4067: foreach my $domkey (@domains) {
4068: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4069: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4070: return 'ok';
4071: }
4072: }
4073: }
4074: }
4075: if (@users > 0) {
4076: foreach my $userkey (@users) {
4077: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4078: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4079: if (ref($item) eq 'HASH') {
4080: if (($item->{'uname'} eq $env{'user.name'}) &&
4081: ($item->{'udom'} eq $env{'user.domain'})) {
4082: return 'ok';
4083: }
4084: }
4085: }
4086: }
4087: }
4088: }
4089: my %roleshash;
4090: my @courses_and_groups = @courses;
4091: push(@courses_and_groups,@groups);
4092: if (@courses_and_groups > 0) {
4093: my (%allgroups,%allroles);
4094: my ($start,$end,$role,$sec,$group);
4095: foreach my $envkey (%env) {
4096: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4097: my $cid = $2.'_'.$3;
4098: if ($1 eq 'gr') {
4099: $group = $4;
4100: $allgroups{$cid}{$group} = $env{$envkey};
4101: } else {
4102: if ($4 eq '') {
4103: $sec = 'none';
4104: } else {
4105: $sec = $4;
4106: }
4107: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4108: }
4109: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4110: my $cid = $2.'_'.$3;
4111: if ($4 eq '') {
4112: $sec = 'none';
4113: } else {
4114: $sec = $4;
4115: }
4116: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4117: }
4118: }
4119: if (keys(%allroles) == 0) {
4120: return;
4121: }
4122: foreach my $key (@courses_and_groups) {
4123: my %content = %{$$access_hash{$key}};
4124: my $cnum = $content{'number'};
4125: my $cdom = $content{'domain'};
4126: my $cid = $cdom.'_'.$cnum;
4127: if (!exists($allroles{$cid})) {
4128: next;
4129: }
4130: foreach my $role_id (keys(%{$content{'roles'}})) {
4131: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4132: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4133: my @status = @{$content{'roles'}{$role_id}{'access'}};
4134: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4135: foreach my $role (keys(%{$allroles{$cid}})) {
4136: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4137: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4138: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4139: if (grep/^all$/,@sections) {
4140: return 'ok';
4141: } else {
4142: if (grep/^$sec$/,@sections) {
4143: return 'ok';
4144: }
4145: }
4146: }
4147: }
4148: if (keys(%{$allgroups{$cid}}) == 0) {
4149: if (grep/^none$/,@groups) {
4150: return 'ok';
4151: }
4152: } else {
4153: if (grep/^all$/,@groups) {
4154: return 'ok';
4155: }
4156: foreach my $group (keys(%{$allgroups{$cid}})) {
4157: if (grep/^$group$/,@groups) {
4158: return 'ok';
4159: }
4160: }
4161: }
4162: }
4163: }
4164: }
4165: }
4166: }
4167: if ($guest) {
4168: return $guest;
4169: }
4170: }
4171: }
4172: return;
4173: }
4174:
4175: sub course_group_datechecker {
4176: my ($dates,$now,$status) = @_;
4177: my ($start,$end) = split(/\./,$dates);
4178: if (!$start && !$end) {
4179: return 'ok';
4180: }
4181: if (grep/^active$/,@{$status}) {
4182: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4183: return 'ok';
4184: }
4185: }
4186: if (grep/^previous$/,@{$status}) {
4187: if ($end > $now ) {
4188: return 'ok';
4189: }
4190: }
4191: if (grep/^future$/,@{$status}) {
4192: if ($start > $now) {
4193: return 'ok';
4194: }
4195: }
4196: return;
4197: }
4198:
4199: sub parse_portfolio_url {
4200: my ($url) = @_;
4201:
4202: my ($type,$udom,$unum,$group,$file_name);
4203:
4204: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4205: $type = 1;
4206: $udom = $1;
4207: $unum = $2;
4208: $file_name = $3;
4209: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4210: $type = 2;
4211: $udom = $1;
4212: $unum = $2;
4213: $group = $3;
4214: $file_name = $3.'/'.$4;
4215: }
4216: if (wantarray) {
4217: return ($type,$udom,$unum,$file_name,$group);
4218: }
4219: return $type;
4220: }
4221:
4222: sub is_portfolio_url {
4223: my ($url) = @_;
4224: return scalar(&parse_portfolio_url($url));
4225: }
4226:
4227: sub is_portfolio_file {
4228: my ($file) = @_;
4229: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4230: return 1;
4231: }
4232: return;
4233: }
4234:
4235:
4236: # ---------------------------------------------- Custom access rule evaluation
4237:
4238: sub customaccess {
4239: my ($priv,$uri)=@_;
4240: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4241: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4242: $udom = &LONCAPA::clean_domain($udom);
4243: $ucrs = &LONCAPA::clean_username($ucrs);
4244: my $access=0;
4245: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4246: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4247: if ($type eq 'user') {
4248: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4249: my ($tdom,$tuname)=split(m{/},$scope);
4250: if ($tdom) {
4251: if ($tdom ne $env{'user.domain'}) { next; }
4252: }
4253: if ($tuname) {
4254: if ($tuname ne $env{'user.name'}) { next; }
4255: }
4256: $access=($effect eq 'allow');
4257: last;
4258: }
4259: } else {
4260: if ($role) {
4261: if ($role ne $urole) { next; }
4262: }
4263: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4264: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4265: if ($tdom) {
4266: if ($tdom ne $udom) { next; }
4267: }
4268: if ($tcrs) {
4269: if ($tcrs ne $ucrs) { next; }
4270: }
4271: if ($tsec) {
4272: if ($tsec ne $usec) { next; }
4273: }
4274: $access=($effect eq 'allow');
4275: last;
4276: }
4277: if ($realm eq '' && $role eq '') {
4278: $access=($effect eq 'allow');
4279: }
4280: }
4281: }
4282: return $access;
4283: }
4284:
4285: # ------------------------------------------------- Check for a user privilege
4286:
4287: sub allowed {
4288: my ($priv,$uri,$symb,$role)=@_;
4289: my $ver_orguri=$uri;
4290: $uri=&deversion($uri);
4291: my $orguri=$uri;
4292: $uri=&declutter($uri);
4293:
4294: if ($priv eq 'evb') {
4295: # Evade communication block restrictions for specified role in a course
4296: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4297: return $1;
4298: } else {
4299: return;
4300: }
4301: }
4302:
4303: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4304: # Free bre access to adm and meta resources
4305: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4306: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4307: && ($priv eq 'bre')) {
4308: return 'F';
4309: }
4310:
4311: # Free bre access to user's own portfolio contents
4312: my ($space,$domain,$name,@dir)=split('/',$uri);
4313: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4314: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4315: my %setters;
4316: my ($startblock,$endblock) =
4317: &Apache::loncommon::blockcheck(\%setters,'port');
4318: if ($startblock && $endblock) {
4319: return 'B';
4320: } else {
4321: return 'F';
4322: }
4323: }
4324:
4325: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4326: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4327: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4328: if (exists($env{'request.course.id'})) {
4329: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4330: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4331: if (($domain eq $cdom) && ($name eq $cnum)) {
4332: my $courseprivid=$env{'request.course.id'};
4333: $courseprivid=~s/\_/\//;
4334: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4335: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4336: return $1;
4337: } else {
4338: if ($env{'request.course.sec'}) {
4339: $courseprivid.='/'.$env{'request.course.sec'};
4340: }
4341: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4342: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4343: return $2;
4344: }
4345: }
4346: }
4347: }
4348: }
4349:
4350: # Free bre to public access
4351:
4352: if ($priv eq 'bre') {
4353: my $copyright=&metadata($uri,'copyright');
4354: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4355: return 'F';
4356: }
4357: if ($copyright eq 'priv') {
4358: $uri=~/([^\/]+)\/([^\/]+)\//;
4359: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4360: return '';
4361: }
4362: }
4363: if ($copyright eq 'domain') {
4364: $uri=~/([^\/]+)\/([^\/]+)\//;
4365: unless (($env{'user.domain'} eq $1) ||
4366: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4367: return '';
4368: }
4369: }
4370: if ($env{'request.role'}=~ /li\.\//) {
4371: # Library role, so allow browsing of resources in this domain.
4372: return 'F';
4373: }
4374: if ($copyright eq 'custom') {
4375: unless (&customaccess($priv,$uri)) { return ''; }
4376: }
4377: }
4378: # Domain coordinator is trying to create a course
4379: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4380: # uri is the requested domain in this case.
4381: # comparison to 'request.role.domain' shows if the user has selected
4382: # a role of dc for the domain in question.
4383: return 'F' if ($uri eq $env{'request.role.domain'});
4384: }
4385:
4386: my $thisallowed='';
4387: my $statecond=0;
4388: my $courseprivid='';
4389:
4390: # Course
4391:
4392: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4393: $thisallowed.=$1;
4394: }
4395:
4396: # Domain
4397:
4398: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4399: =~/\Q$priv\E\&([^\:]*)/) {
4400: $thisallowed.=$1;
4401: }
4402:
4403: # Course: uri itself is a course
4404: my $courseuri=$uri;
4405: $courseuri=~s/\_(\d)/\/$1/;
4406: $courseuri=~s/^([^\/])/\/$1/;
4407:
4408: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4409: =~/\Q$priv\E\&([^\:]*)/) {
4410: $thisallowed.=$1;
4411: }
4412:
4413: # URI is an uploaded document for this course, default permissions don't matter
4414: # not allowing 'edit' access (editupload) to uploaded course docs
4415: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4416: $thisallowed='';
4417: my ($match)=&is_on_map($uri);
4418: if ($match) {
4419: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4420: =~/\Q$priv\E\&([^\:]*)/) {
4421: $thisallowed.=$1;
4422: }
4423: } else {
4424: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4425: if ($refuri) {
4426: if ($refuri =~ m|^/adm/|) {
4427: $thisallowed='F';
4428: } else {
4429: $refuri=&declutter($refuri);
4430: my ($match) = &is_on_map($refuri);
4431: if ($match) {
4432: $thisallowed='F';
4433: }
4434: }
4435: }
4436: }
4437: }
4438:
4439: if ($priv eq 'bre'
4440: && $thisallowed ne 'F'
4441: && $thisallowed ne '2'
4442: && &is_portfolio_url($uri)) {
4443: $thisallowed = &portfolio_access($uri);
4444: }
4445:
4446: # Full access at system, domain or course-wide level? Exit.
4447:
4448: if ($thisallowed=~/F/) {
4449: return 'F';
4450: }
4451:
4452: # If this is generating or modifying users, exit with special codes
4453:
4454: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4455: if (($priv eq 'cca') || ($priv eq 'caa')) {
4456: my ($audom,$auname)=split('/',$uri);
4457: # no author name given, so this just checks on the general right to make a co-author in this domain
4458: unless ($auname) { return $thisallowed; }
4459: # an author name is given, so we are about to actually make a co-author for a certain account
4460: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4461: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4462: ($audom ne $env{'request.role.domain'}))) { return ''; }
4463: }
4464: return $thisallowed;
4465: }
4466: #
4467: # Gathered so far: system, domain and course wide privileges
4468: #
4469: # Course: See if uri or referer is an individual resource that is part of
4470: # the course
4471:
4472: if ($env{'request.course.id'}) {
4473:
4474: $courseprivid=$env{'request.course.id'};
4475: if ($env{'request.course.sec'}) {
4476: $courseprivid.='/'.$env{'request.course.sec'};
4477: }
4478: $courseprivid=~s/\_/\//;
4479: my $checkreferer=1;
4480: my ($match,$cond)=&is_on_map($uri);
4481: if ($match) {
4482: $statecond=$cond;
4483: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4484: =~/\Q$priv\E\&([^\:]*)/) {
4485: $thisallowed.=$1;
4486: $checkreferer=0;
4487: }
4488: }
4489:
4490: if ($checkreferer) {
4491: my $refuri=$env{'httpref.'.$orguri};
4492: unless ($refuri) {
4493: foreach my $key (keys(%env)) {
4494: if ($key=~/^httpref\..*\*/) {
4495: my $pattern=$key;
4496: $pattern=~s/^httpref\.\/res\///;
4497: $pattern=~s/\*/\[\^\/\]\+/g;
4498: $pattern=~s/\//\\\//g;
4499: if ($orguri=~/$pattern/) {
4500: $refuri=$env{$key};
4501: }
4502: }
4503: }
4504: }
4505:
4506: if ($refuri) {
4507: $refuri=&declutter($refuri);
4508: my ($match,$cond)=&is_on_map($refuri);
4509: if ($match) {
4510: my $refstatecond=$cond;
4511: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4512: =~/\Q$priv\E\&([^\:]*)/) {
4513: $thisallowed.=$1;
4514: $uri=$refuri;
4515: $statecond=$refstatecond;
4516: }
4517: }
4518: }
4519: }
4520: }
4521:
4522: #
4523: # Gathered now: all privileges that could apply, and condition number
4524: #
4525: #
4526: # Full or no access?
4527: #
4528:
4529: if ($thisallowed=~/F/) {
4530: return 'F';
4531: }
4532:
4533: unless ($thisallowed) {
4534: return '';
4535: }
4536:
4537: # Restrictions exist, deal with them
4538: #
4539: # C:according to course preferences
4540: # R:according to resource settings
4541: # L:unless locked
4542: # X:according to user session state
4543: #
4544:
4545: # Possibly locked functionality, check all courses
4546: # Locks might take effect only after 10 minutes cache expiration for other
4547: # courses, and 2 minutes for current course
4548:
4549: my $envkey;
4550: if ($thisallowed=~/L/) {
4551: foreach $envkey (keys %env) {
4552: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4553: my $courseid=$2;
4554: my $roleid=$1.'.'.$2;
4555: $courseid=~s/^\///;
4556: my $expiretime=600;
4557: if ($env{'request.role'} eq $roleid) {
4558: $expiretime=120;
4559: }
4560: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4561: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4562: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4563: &coursedescription($courseid,{'freshen_cache' => 1});
4564: }
4565: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4566: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4567: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4568: &log($env{'user.domain'},$env{'user.name'},
4569: $env{'user.home'},
4570: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4571: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4572: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4573: return '';
4574: }
4575: }
4576: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4577: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4578: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4579: &log($env{'user.domain'},$env{'user.name'},
4580: $env{'user.home'},
4581: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4582: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4583: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4584: return '';
4585: }
4586: }
4587: }
4588: }
4589: }
4590:
4591: #
4592: # Rest of the restrictions depend on selected course
4593: #
4594:
4595: unless ($env{'request.course.id'}) {
4596: if ($thisallowed eq 'A') {
4597: return 'A';
4598: } elsif ($thisallowed eq 'B') {
4599: return 'B';
4600: } else {
4601: return '1';
4602: }
4603: }
4604:
4605: #
4606: # Now user is definitely in a course
4607: #
4608:
4609:
4610: # Course preferences
4611:
4612: if ($thisallowed=~/C/) {
4613: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4614: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4615: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4616: =~/\Q$rolecode\E/) {
4617: if ($priv ne 'pch') {
4618: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4619: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4620: $env{'request.course.id'});
4621: }
4622: return '';
4623: }
4624:
4625: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4626: =~/\Q$unamedom\E/) {
4627: if ($priv ne 'pch') {
4628: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4629: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4630: $env{'request.course.id'});
4631: }
4632: return '';
4633: }
4634: }
4635:
4636: # Resource preferences
4637:
4638: if ($thisallowed=~/R/) {
4639: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4640: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4641: if ($priv ne 'pch') {
4642: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4643: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4644: }
4645: return '';
4646: }
4647: }
4648:
4649: # Restricted by state or randomout?
4650:
4651: if ($thisallowed=~/X/) {
4652: if ($env{'acc.randomout'}) {
4653: if (!$symb) { $symb=&symbread($uri,1); }
4654: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4655: return '';
4656: }
4657: }
4658: if (&condval($statecond)) {
4659: return '2';
4660: } else {
4661: return '';
4662: }
4663: }
4664:
4665: if ($thisallowed eq 'A') {
4666: return 'A';
4667: } elsif ($thisallowed eq 'B') {
4668: return 'B';
4669: }
4670: return 'F';
4671: }
4672:
4673: sub split_uri_for_cond {
4674: my $uri=&deversion(&declutter(shift));
4675: my @uriparts=split(/\//,$uri);
4676: my $filename=pop(@uriparts);
4677: my $pathname=join('/',@uriparts);
4678: return ($pathname,$filename);
4679: }
4680: # --------------------------------------------------- Is a resource on the map?
4681:
4682: sub is_on_map {
4683: my ($pathname,$filename) = &split_uri_for_cond(shift);
4684: #Trying to find the conditional for the file
4685: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4686: /\&\Q$filename\E\:([\d\|]+)\&/);
4687: if ($match) {
4688: return (1,$1);
4689: } else {
4690: return (0,0);
4691: }
4692: }
4693:
4694: # --------------------------------------------------------- Get symb from alias
4695:
4696: sub get_symb_from_alias {
4697: my $symb=shift;
4698: my ($map,$resid,$url)=&decode_symb($symb);
4699: # Already is a symb
4700: if ($url) { return $symb; }
4701: # Must be an alias
4702: my $aliassymb='';
4703: my %bighash;
4704: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4705: &GDBM_READER(),0640)) {
4706: my $rid=$bighash{'mapalias_'.$symb};
4707: if ($rid) {
4708: my ($mapid,$resid)=split(/\./,$rid);
4709: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4710: $resid,$bighash{'src_'.$rid});
4711: }
4712: untie %bighash;
4713: }
4714: return $aliassymb;
4715: }
4716:
4717: # ----------------------------------------------------------------- Define Role
4718:
4719: sub definerole {
4720: if (allowed('mcr','/')) {
4721: my ($rolename,$sysrole,$domrole,$courole)=@_;
4722: foreach my $role (split(':',$sysrole)) {
4723: my ($crole,$cqual)=split(/\&/,$role);
4724: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4725: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4726: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4727: return "refused:s:$crole&$cqual";
4728: }
4729: }
4730: }
4731: foreach my $role (split(':',$domrole)) {
4732: my ($crole,$cqual)=split(/\&/,$role);
4733: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4734: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4735: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4736: return "refused:d:$crole&$cqual";
4737: }
4738: }
4739: }
4740: foreach my $role (split(':',$courole)) {
4741: my ($crole,$cqual)=split(/\&/,$role);
4742: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4743: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4744: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4745: return "refused:c:$crole&$cqual";
4746: }
4747: }
4748: }
4749: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4750: "$env{'user.domain'}:$env{'user.name'}:".
4751: "rolesdef_$rolename=".
4752: escape($sysrole.'_'.$domrole.'_'.$courole);
4753: return reply($command,$env{'user.home'});
4754: } else {
4755: return 'refused';
4756: }
4757: }
4758:
4759: # ---------------- Make a metadata query against the network of library servers
4760:
4761: sub metadata_query {
4762: my ($query,$custom,$customshow,$server_array)=@_;
4763: my %rhash;
4764: my %libserv = &all_library();
4765: my @server_list = (defined($server_array) ? @$server_array
4766: : keys(%libserv) );
4767: for my $server (@server_list) {
4768: unless ($custom or $customshow) {
4769: my $reply=&reply("querysend:".&escape($query),$server);
4770: $rhash{$server}=$reply;
4771: }
4772: else {
4773: my $reply=&reply("querysend:".&escape($query).':'.
4774: &escape($custom).':'.&escape($customshow),
4775: $server);
4776: $rhash{$server}=$reply;
4777: }
4778: }
4779: return \%rhash;
4780: }
4781:
4782: # ----------------------------------------- Send log queries and wait for reply
4783:
4784: sub log_query {
4785: my ($uname,$udom,$query,%filters)=@_;
4786: my $uhome=&homeserver($uname,$udom);
4787: if ($uhome eq 'no_host') { return 'error: no_host'; }
4788: my $uhost=&hostname($uhome);
4789: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4790: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4791: $uhome);
4792: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4793: return get_query_reply($queryid);
4794: }
4795:
4796: # -------------------------- Update MySQL table for portfolio file
4797:
4798: sub update_portfolio_table {
4799: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4800: my $homeserver = &homeserver($uname,$udom);
4801: my $queryid=
4802: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4803: ':'.&escape($file_name).':'.$action,$homeserver);
4804: my $reply = &get_query_reply($queryid);
4805: return $reply;
4806: }
4807:
4808: # -------------------------- Update MySQL allusers table
4809:
4810: sub update_allusers_table {
4811: my ($uname,$udom,$names) = @_;
4812: my $homeserver = &homeserver($uname,$udom);
4813: my $queryid=
4814: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
4815: 'lastname='.&escape($names->{'lastname'}).'%%'.
4816: 'firstname='.&escape($names->{'firstname'}).'%%'.
4817: 'middlename='.&escape($names->{'middlename'}).'%%'.
4818: 'generation='.&escape($names->{'generation'}).'%%'.
4819: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
4820: 'id='.&escape($names->{'id'}),$homeserver);
4821: my $reply = &get_query_reply($queryid);
4822: return $reply;
4823: }
4824:
4825: # ------- Request retrieval of institutional classlists for course(s)
4826:
4827: sub fetch_enrollment_query {
4828: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4829: my $homeserver;
4830: my $maxtries = 1;
4831: if ($context eq 'automated') {
4832: $homeserver = $perlvar{'lonHostID'};
4833: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4834: } else {
4835: $homeserver = &homeserver($cnum,$dom);
4836: }
4837: my $host=&hostname($homeserver);
4838: my $cmd = '';
4839: foreach my $affiliate (keys %{$affiliatesref}) {
4840: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4841: }
4842: $cmd =~ s/%%$//;
4843: $cmd = &escape($cmd);
4844: my $query = 'fetchenrollment';
4845: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4846: unless ($queryid=~/^\Q$host\E\_/) {
4847: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4848: return 'error: '.$queryid;
4849: }
4850: my $reply = &get_query_reply($queryid);
4851: my $tries = 1;
4852: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4853: $reply = &get_query_reply($queryid);
4854: $tries ++;
4855: }
4856: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4857: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4858: } else {
4859: my @responses = split(/:/,$reply);
4860: if ($homeserver eq $perlvar{'lonHostID'}) {
4861: foreach my $line (@responses) {
4862: my ($key,$value) = split(/=/,$line,2);
4863: $$replyref{$key} = $value;
4864: }
4865: } else {
4866: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4867: foreach my $line (@responses) {
4868: my ($key,$value) = split(/=/,$line);
4869: $$replyref{$key} = $value;
4870: if ($value > 0) {
4871: foreach my $item (@{$$affiliatesref{$key}}) {
4872: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4873: my $destname = $pathname.'/'.$filename;
4874: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
4875: if ($xml_classlist =~ /^error/) {
4876: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
4877: } else {
4878: if ( open(FILE,">$destname") ) {
4879: print FILE &unescape($xml_classlist);
4880: close(FILE);
4881: } else {
4882: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
4883: }
4884: }
4885: }
4886: }
4887: }
4888: }
4889: return 'ok';
4890: }
4891: return 'error';
4892: }
4893:
4894: sub get_query_reply {
4895: my $queryid=shift;
4896: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
4897: my $reply='';
4898: for (1..100) {
4899: sleep 2;
4900: if (-e $replyfile.'.end') {
4901: if (open(my $fh,$replyfile)) {
4902: $reply = join('',<$fh>);
4903: close($fh);
4904: } else { return 'error: reply_file_error'; }
4905: return &unescape($reply);
4906: }
4907: }
4908: return 'timeout:'.$queryid;
4909: }
4910:
4911: sub courselog_query {
4912: #
4913: # possible filters:
4914: # url: url or symb
4915: # username
4916: # domain
4917: # action: view, submit, grade
4918: # start: timestamp
4919: # end: timestamp
4920: #
4921: my (%filters)=@_;
4922: unless ($env{'request.course.id'}) { return 'no_course'; }
4923: if ($filters{'url'}) {
4924: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
4925: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
4926: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
4927: }
4928: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
4929: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4930: return &log_query($cname,$cdom,'courselog',%filters);
4931: }
4932:
4933: sub userlog_query {
4934: #
4935: # possible filters:
4936: # action: log check role
4937: # start: timestamp
4938: # end: timestamp
4939: #
4940: my ($uname,$udom,%filters)=@_;
4941: return &log_query($uname,$udom,'userlog',%filters);
4942: }
4943:
4944: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
4945:
4946: sub auto_run {
4947: my ($cnum,$cdom) = @_;
4948: my $response = 0;
4949: my $settings;
4950: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
4951: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
4952: $settings = $domconfig{'autoenroll'};
4953: if ($settings->{'run'} eq '1') {
4954: $response = 1;
4955: }
4956: } else {
4957: my $homeserver;
4958: if (&is_course($cdom,$cnum)) {
4959: $homeserver = &homeserver($cnum,$cdom);
4960: } else {
4961: $homeserver = &domain($cdom,'primary');
4962: }
4963: if ($homeserver ne 'no_host') {
4964: $response = &reply('autorun:'.$cdom,$homeserver);
4965: }
4966: }
4967: return $response;
4968: }
4969:
4970: sub auto_get_sections {
4971: my ($cnum,$cdom,$inst_coursecode) = @_;
4972: my $homeserver = &homeserver($cnum,$cdom);
4973: my @secs = ();
4974: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
4975: unless ($response eq 'refused') {
4976: @secs = split(/:/,$response);
4977: }
4978: return @secs;
4979: }
4980:
4981: sub auto_new_course {
4982: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
4983: my $homeserver = &homeserver($cnum,$cdom);
4984: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
4985: return $response;
4986: }
4987:
4988: sub auto_validate_courseID {
4989: my ($cnum,$cdom,$inst_course_id) = @_;
4990: my $homeserver = &homeserver($cnum,$cdom);
4991: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
4992: return $response;
4993: }
4994:
4995: sub auto_create_password {
4996: my ($cnum,$cdom,$authparam,$udom) = @_;
4997: my ($homeserver,$response);
4998: my $create_passwd = 0;
4999: my $authchk = '';
5000: if ($udom =~ /^$match_domain$/) {
5001: $homeserver = &domain($udom,'primary');
5002: }
5003: if ($homeserver eq '') {
5004: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5005: $homeserver = &homeserver($cnum,$cdom);
5006: }
5007: }
5008: if ($homeserver eq '') {
5009: $authchk = 'nodomain';
5010: } else {
5011: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5012: if ($response eq 'refused') {
5013: $authchk = 'refused';
5014: } else {
5015: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5016: }
5017: }
5018: return ($authparam,$create_passwd,$authchk);
5019: }
5020:
5021: sub auto_photo_permission {
5022: my ($cnum,$cdom,$students) = @_;
5023: my $homeserver = &homeserver($cnum,$cdom);
5024: my ($outcome,$perm_reqd,$conditions) =
5025: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5026: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5027: return (undef,undef);
5028: }
5029: return ($outcome,$perm_reqd,$conditions);
5030: }
5031:
5032: sub auto_checkphotos {
5033: my ($uname,$udom,$pid) = @_;
5034: my $homeserver = &homeserver($uname,$udom);
5035: my ($result,$resulttype);
5036: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5037: &escape($uname).':'.&escape($pid),
5038: $homeserver));
5039: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5040: return (undef,undef);
5041: }
5042: if ($outcome) {
5043: ($result,$resulttype) = split(/:/,$outcome);
5044: }
5045: return ($result,$resulttype);
5046: }
5047:
5048: sub auto_photochoice {
5049: my ($cnum,$cdom) = @_;
5050: my $homeserver = &homeserver($cnum,$cdom);
5051: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5052: &escape($cdom),
5053: $homeserver)));
5054: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5055: return (undef,undef);
5056: }
5057: return ($update,$comment);
5058: }
5059:
5060: sub auto_photoupdate {
5061: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5062: my $homeserver = &homeserver($cnum,$dom);
5063: my $host=&hostname($homeserver);
5064: my $cmd = '';
5065: my $maxtries = 1;
5066: foreach my $affiliate (keys(%{$affiliatesref})) {
5067: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5068: }
5069: $cmd =~ s/%%$//;
5070: $cmd = &escape($cmd);
5071: my $query = 'institutionalphotos';
5072: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5073: unless ($queryid=~/^\Q$host\E\_/) {
5074: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5075: return 'error: '.$queryid;
5076: }
5077: my $reply = &get_query_reply($queryid);
5078: my $tries = 1;
5079: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5080: $reply = &get_query_reply($queryid);
5081: $tries ++;
5082: }
5083: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5084: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5085: } else {
5086: my @responses = split(/:/,$reply);
5087: my $outcome = shift(@responses);
5088: foreach my $item (@responses) {
5089: my ($key,$value) = split(/=/,$item);
5090: $$photo{$key} = $value;
5091: }
5092: return $outcome;
5093: }
5094: return 'error';
5095: }
5096:
5097: sub auto_instcode_format {
5098: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5099: $cat_order) = @_;
5100: my $courses = '';
5101: my @homeservers;
5102: if ($caller eq 'global') {
5103: my %servers = &get_servers($codedom,'library');
5104: foreach my $tryserver (keys(%servers)) {
5105: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5106: push(@homeservers,$tryserver);
5107: }
5108: }
5109: } else {
5110: push(@homeservers,&homeserver($caller,$codedom));
5111: }
5112: foreach my $code (keys(%{$instcodes})) {
5113: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5114: }
5115: chop($courses);
5116: my $ok_response = 0;
5117: my $response;
5118: while (@homeservers > 0 && $ok_response == 0) {
5119: my $server = shift(@homeservers);
5120: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5121: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5122: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5123: split(/:/,$response);
5124: %{$codes} = (%{$codes},&str2hash($codes_str));
5125: push(@{$codetitles},&str2array($codetitles_str));
5126: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5127: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5128: $ok_response = 1;
5129: }
5130: }
5131: if ($ok_response) {
5132: return 'ok';
5133: } else {
5134: return $response;
5135: }
5136: }
5137:
5138: sub auto_instcode_defaults {
5139: my ($domain,$returnhash,$code_order) = @_;
5140: my @homeservers;
5141:
5142: my %servers = &get_servers($domain,'library');
5143: foreach my $tryserver (keys(%servers)) {
5144: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5145: push(@homeservers,$tryserver);
5146: }
5147: }
5148:
5149: my $response;
5150: foreach my $server (@homeservers) {
5151: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5152: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5153:
5154: foreach my $pair (split(/\&/,$response)) {
5155: my ($name,$value)=split(/\=/,$pair);
5156: if ($name eq 'code_order') {
5157: @{$code_order} = split(/\&/,&unescape($value));
5158: } else {
5159: $returnhash->{&unescape($name)}=&unescape($value);
5160: }
5161: }
5162: return 'ok';
5163: }
5164:
5165: return $response;
5166: }
5167:
5168: sub auto_validate_class_sec {
5169: my ($cdom,$cnum,$owners,$inst_class) = @_;
5170: my $homeserver = &homeserver($cnum,$cdom);
5171: my $ownerlist;
5172: if (ref($owners) eq 'ARRAY') {
5173: $ownerlist = join(',',@{$owners});
5174: } else {
5175: $ownerlist = $owners;
5176: }
5177: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5178: &escape($ownerlist).':'.$cdom,$homeserver);
5179: return $response;
5180: }
5181:
5182: # ------------------------------------------------------- Course Group routines
5183:
5184: sub get_coursegroups {
5185: my ($cdom,$cnum,$group,$namespace) = @_;
5186: return(&dump($namespace,$cdom,$cnum,$group));
5187: }
5188:
5189: sub modify_coursegroup {
5190: my ($cdom,$cnum,$groupsettings) = @_;
5191: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5192: }
5193:
5194: sub toggle_coursegroup_status {
5195: my ($cdom,$cnum,$group,$action) = @_;
5196: my ($from_namespace,$to_namespace);
5197: if ($action eq 'delete') {
5198: $from_namespace = 'coursegroups';
5199: $to_namespace = 'deleted_groups';
5200: } else {
5201: $from_namespace = 'deleted_groups';
5202: $to_namespace = 'coursegroups';
5203: }
5204: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5205: if (my $tmp = &error(%curr_group)) {
5206: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5207: return ('read error',$tmp);
5208: } else {
5209: my %savedsettings = %curr_group;
5210: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5211: my $deloutcome;
5212: if ($result eq 'ok') {
5213: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5214: } else {
5215: return ('write error',$result);
5216: }
5217: if ($deloutcome eq 'ok') {
5218: return 'ok';
5219: } else {
5220: return ('delete error',$deloutcome);
5221: }
5222: }
5223: }
5224:
5225: sub modify_group_roles {
5226: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;
5227: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5228: my $role = 'gr/'.&escape($userprivs);
5229: my ($uname,$udom) = split(/:/,$user);
5230: my $result = &assignrole($udom,$uname,$url,$role,$end,$start);
5231: if ($result eq 'ok') {
5232: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5233: }
5234: return $result;
5235: }
5236:
5237: sub modify_coursegroup_membership {
5238: my ($cdom,$cnum,$membership) = @_;
5239: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5240: return $result;
5241: }
5242:
5243: sub get_active_groups {
5244: my ($udom,$uname,$cdom,$cnum) = @_;
5245: my $now = time;
5246: my %groups = ();
5247: foreach my $key (keys(%env)) {
5248: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5249: my ($start,$end) = split(/\./,$env{$key});
5250: if (($end!=0) && ($end<$now)) { next; }
5251: if (($start!=0) && ($start>$now)) { next; }
5252: if ($1 eq $cdom && $2 eq $cnum) {
5253: $groups{$3} = $env{$key} ;
5254: }
5255: }
5256: }
5257: return %groups;
5258: }
5259:
5260: sub get_group_membership {
5261: my ($cdom,$cnum,$group) = @_;
5262: return(&dump('groupmembership',$cdom,$cnum,$group));
5263: }
5264:
5265: sub get_users_groups {
5266: my ($udom,$uname,$courseid) = @_;
5267: my @usersgroups;
5268: my $cachetime=1800;
5269:
5270: my $hashid="$udom:$uname:$courseid";
5271: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5272: if (defined($cached)) {
5273: @usersgroups = split(/:/,$grouplist);
5274: } else {
5275: $grouplist = '';
5276: my $courseurl = &courseid_to_courseurl($courseid);
5277: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5278: my $access_end = $env{'course.'.$courseid.
5279: '.default_enrollment_end_date'};
5280: my $now = time;
5281: foreach my $key (keys(%roleshash)) {
5282: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5283: my $group = $1;
5284: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5285: my $start = $2;
5286: my $end = $1;
5287: if ($start == -1) { next; } # deleted from group
5288: if (($start!=0) && ($start>$now)) { next; }
5289: if (($end!=0) && ($end<$now)) {
5290: if ($access_end && $access_end < $now) {
5291: if ($access_end - $end < 86400) {
5292: push(@usersgroups,$group);
5293: }
5294: }
5295: next;
5296: }
5297: push(@usersgroups,$group);
5298: }
5299: }
5300: }
5301: @usersgroups = &sort_course_groups($courseid,@usersgroups);
5302: $grouplist = join(':',@usersgroups);
5303: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
5304: }
5305: return @usersgroups;
5306: }
5307:
5308: sub devalidate_getgroups_cache {
5309: my ($udom,$uname,$cdom,$cnum)=@_;
5310: my $courseid = $cdom.'_'.$cnum;
5311:
5312: my $hashid="$udom:$uname:$courseid";
5313: &devalidate_cache_new('getgroups',$hashid);
5314: }
5315:
5316: # ------------------------------------------------------------------ Plain Text
5317:
5318: sub plaintext {
5319: my ($short,$type,$cid) = @_;
5320: if ($short =~ /^cr/) {
5321: return (split('/',$short))[-1];
5322: }
5323: if (!defined($cid)) {
5324: $cid = $env{'request.course.id'};
5325: }
5326: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
5327: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
5328: '.plaintext'});
5329: }
5330: my %rolenames = (
5331: Course => 'std',
5332: Group => 'alt1',
5333: );
5334: if (defined($type) &&
5335: defined($rolenames{$type}) &&
5336: defined($prp{$short}{$rolenames{$type}})) {
5337: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
5338: } else {
5339: return &Apache::lonlocal::mt($prp{$short}{'std'});
5340: }
5341: }
5342:
5343: # ----------------------------------------------------------------- Assign Role
5344:
5345: sub assignrole {
5346: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll)=@_;
5347: my $mrole;
5348: if ($role =~ /^cr\//) {
5349: my $cwosec=$url;
5350: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5351: unless (&allowed('ccr',$cwosec)) {
5352: &logthis('Refused custom assignrole: '.
5353: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5354: $env{'user.name'}.' at '.$env{'user.domain'});
5355: return 'refused';
5356: }
5357: $mrole='cr';
5358: } elsif ($role =~ /^gr\//) {
5359: my $cwogrp=$url;
5360: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5361: unless (&allowed('mdg',$cwogrp)) {
5362: &logthis('Refused group assignrole: '.
5363: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5364: $env{'user.name'}.' at '.$env{'user.domain'});
5365: return 'refused';
5366: }
5367: $mrole='gr';
5368: } else {
5369: my $cwosec=$url;
5370: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5371: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
5372: my $refused;
5373: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
5374: if (!(&allowed('c'.$role,$url))) {
5375: $refused = 1;
5376: }
5377: } else {
5378: $refused = 1;
5379: }
5380: if ($refused) {
5381: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5382: $refused = '';
5383: } else {
5384: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
5385: ' '.$role.' '.$end.' '.$start.' by '.
5386: $env{'user.name'}.' at '.$env{'user.domain'});
5387: return 'refused';
5388: }
5389: }
5390: }
5391: $mrole=$role;
5392: }
5393: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5394: "$udom:$uname:$url".'_'."$mrole=$role";
5395: if ($end) { $command.='_'.$end; }
5396: if ($start) {
5397: if ($end) {
5398: $command.='_'.$start;
5399: } else {
5400: $command.='_0_'.$start;
5401: }
5402: }
5403: my $origstart = $start;
5404: my $origend = $end;
5405: # actually delete
5406: if ($deleteflag) {
5407: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5408: # modify command to delete the role
5409: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5410: "$udom:$uname:$url".'_'."$mrole";
5411: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5412: # set start and finish to negative values for userrolelog
5413: $start=-1;
5414: $end=-1;
5415: }
5416: }
5417: # send command
5418: my $answer=&reply($command,&homeserver($uname,$udom));
5419: # log new user role if status is ok
5420: if ($answer eq 'ok') {
5421: &userrolelog($role,$uname,$udom,$url,$start,$end);
5422: # for course roles, perform group memberships changes triggered by role change.
5423: unless ($role =~ /^gr/) {
5424: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5425: $origstart);
5426: }
5427: }
5428: return $answer;
5429: }
5430:
5431: # -------------------------------------------------- Modify user authentication
5432: # Overrides without validation
5433:
5434: sub modifyuserauth {
5435: my ($udom,$uname,$umode,$upass)=@_;
5436: my $uhome=&homeserver($uname,$udom);
5437: unless (&allowed('mau',$udom)) { return 'refused'; }
5438: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5439: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5440: ' in domain '.$env{'request.role.domain'});
5441: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5442: &escape($upass),$uhome);
5443: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5444: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5445: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5446: &log($udom,,$uname,$uhome,
5447: 'Authentication changed by '.$env{'user.domain'}.', '.
5448: $env{'user.name'}.', '.$umode.
5449: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5450: unless ($reply eq 'ok') {
5451: &logthis('Authentication mode error: '.$reply);
5452: return 'error: '.$reply;
5453: }
5454: return 'ok';
5455: }
5456:
5457: # --------------------------------------------------------------- Modify a user
5458:
5459: sub modifyuser {
5460: my ($udom, $uname, $uid,
5461: $umode, $upass, $first,
5462: $middle, $last, $gene,
5463: $forceid, $desiredhome, $email)=@_;
5464: $udom= &LONCAPA::clean_domain($udom);
5465: $uname=&LONCAPA::clean_username($uname);
5466: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5467: $umode.', '.$first.', '.$middle.', '.
5468: $last.', '.$gene.'(forceid: '.$forceid.')'.
5469: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5470: ' desiredhome not specified').
5471: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5472: ' in domain '.$env{'request.role.domain'});
5473: my $uhome=&homeserver($uname,$udom,'true');
5474: # ----------------------------------------------------------------- Create User
5475: if (($uhome eq 'no_host') &&
5476: (($umode && $upass) || ($umode eq 'localauth'))) {
5477: my $unhome='';
5478: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5479: $unhome = $desiredhome;
5480: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5481: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5482: } else { # load balancing routine for determining $unhome
5483: my $loadm=10000000;
5484: my %servers = &get_servers($udom,'library');
5485: foreach my $tryserver (keys(%servers)) {
5486: my $answer=reply('load',$tryserver);
5487: if (($answer=~/\d+/) && ($answer<$loadm)) {
5488: $loadm=$answer;
5489: $unhome=$tryserver;
5490: }
5491: }
5492: }
5493: if (($unhome eq '') || ($unhome eq 'no_host')) {
5494: return 'error: unable to find a home server for '.$uname.
5495: ' in domain '.$udom;
5496: }
5497: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
5498: &escape($upass),$unhome);
5499: unless ($reply eq 'ok') {
5500: return 'error: '.$reply;
5501: }
5502: $uhome=&homeserver($uname,$udom,'true');
5503: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
5504: return 'error: unable verify users home machine.';
5505: }
5506: } # End of creation of new user
5507: # ---------------------------------------------------------------------- Add ID
5508: if ($uid) {
5509: $uid=~tr/A-Z/a-z/;
5510: my %uidhash=&idrget($udom,$uname);
5511: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
5512: && (!$forceid)) {
5513: unless ($uid eq $uidhash{$uname}) {
5514: return 'error: user id "'.$uid.'" does not match '.
5515: 'current user id "'.$uidhash{$uname}.'".';
5516: }
5517: } else {
5518: &idput($udom,($uname => $uid));
5519: }
5520: }
5521: # -------------------------------------------------------------- Add names, etc
5522: my @tmp=&get('environment',
5523: ['firstname','middlename','lastname','generation','id',
5524: 'permanentemail'],
5525: $udom,$uname);
5526: my %names;
5527: if ($tmp[0] =~ m/^error:.*/) {
5528: %names=();
5529: } else {
5530: %names = @tmp;
5531: }
5532: #
5533: # Make sure to not trash student environment if instructor does not bother
5534: # to supply name and email information
5535: #
5536: if ($first) { $names{'firstname'} = $first; }
5537: if (defined($middle)) { $names{'middlename'} = $middle; }
5538: if ($last) { $names{'lastname'} = $last; }
5539: if (defined($gene)) { $names{'generation'} = $gene; }
5540: if ($email) {
5541: $email=~s/[^\w\@\.\-\,]//gs;
5542: if ($email=~/\@/) { $names{'notification'} = $email;
5543: $names{'critnotification'} = $email;
5544: $names{'permanentemail'} = $email; }
5545: }
5546: if ($uid) { $names{'id'} = $uid; }
5547: my $reply = &put('environment', \%names, $udom,$uname);
5548: if ($reply ne 'ok') { return 'error: '.$reply; }
5549: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
5550: &devalidate_cache_new('namescache',$uname.':'.$udom);
5551: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5552: $umode.', '.$first.', '.$middle.', '.
5553: $last.', '.$gene.' by '.
5554: $env{'user.name'}.' at '.$env{'user.domain'});
5555: return 'ok';
5556: }
5557:
5558: # -------------------------------------------------------------- Modify student
5559:
5560: sub modifystudent {
5561: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5562: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
5563: if (!$cid) {
5564: unless ($cid=$env{'request.course.id'}) {
5565: return 'not_in_class';
5566: }
5567: }
5568: # --------------------------------------------------------------- Make the user
5569: my $reply=&modifyuser
5570: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5571: $desiredhome,$email);
5572: unless ($reply eq 'ok') { return $reply; }
5573: # This will cause &modify_student_enrollment to get the uid from the
5574: # students environment
5575: $uid = undef if (!$forceid);
5576: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5577: $gene,$usec,$end,$start,$type,$locktype,$cid);
5578: return $reply;
5579: }
5580:
5581: sub modify_student_enrollment {
5582: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll) = @_;
5583: my ($cdom,$cnum,$chome);
5584: if (!$cid) {
5585: unless ($cid=$env{'request.course.id'}) {
5586: return 'not_in_class';
5587: }
5588: $cdom=$env{'course.'.$cid.'.domain'};
5589: $cnum=$env{'course.'.$cid.'.num'};
5590: } else {
5591: ($cdom,$cnum)=split(/_/,$cid);
5592: }
5593: $chome=$env{'course.'.$cid.'.home'};
5594: if (!$chome) {
5595: $chome=&homeserver($cnum,$cdom);
5596: }
5597: if (!$chome) { return 'unknown_course'; }
5598: # Make sure the user exists
5599: my $uhome=&homeserver($uname,$udom);
5600: if (($uhome eq '') || ($uhome eq 'no_host')) {
5601: return 'error: no such user';
5602: }
5603: # Get student data if we were not given enough information
5604: if (!defined($first) || $first eq '' ||
5605: !defined($last) || $last eq '' ||
5606: !defined($uid) || $uid eq '' ||
5607: !defined($middle) || $middle eq '' ||
5608: !defined($gene) || $gene eq '') {
5609: # They did not supply us with enough data to enroll the student, so
5610: # we need to pick up more information.
5611: my %tmp = &get('environment',
5612: ['firstname','middlename','lastname', 'generation','id']
5613: ,$udom,$uname);
5614:
5615: #foreach my $key (keys(%tmp)) {
5616: # &logthis("key $key = ".$tmp{$key});
5617: #}
5618: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5619: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5620: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5621: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5622: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5623: }
5624: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5625: my $reply=cput('classlist',
5626: {"$uname:$udom" =>
5627: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5628: $cdom,$cnum);
5629: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5630: return 'error: '.$reply;
5631: } else {
5632: &devalidate_getsection_cache($udom,$uname,$cid);
5633: }
5634: # Add student role to user
5635: my $uurl='/'.$cid;
5636: $uurl=~s/\_/\//g;
5637: if ($usec) {
5638: $uurl.='/'.$usec;
5639: }
5640: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll);
5641: }
5642:
5643: sub format_name {
5644: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5645: my $name;
5646: if ($first ne 'lastname') {
5647: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5648: } else {
5649: if ($lastname=~/\S/) {
5650: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5651: $name=~s/\s+,/,/;
5652: } else {
5653: $name.= $firstname.' '.$middlename.' '.$generation;
5654: }
5655: }
5656: $name=~s/^\s+//;
5657: $name=~s/\s+$//;
5658: $name=~s/\s+/ /g;
5659: return $name;
5660: }
5661:
5662: # ------------------------------------------------- Write to course preferences
5663:
5664: sub writecoursepref {
5665: my ($courseid,%prefs)=@_;
5666: $courseid=~s/^\///;
5667: $courseid=~s/\_/\//g;
5668: my ($cdomain,$cnum)=split(/\//,$courseid);
5669: my $chome=homeserver($cnum,$cdomain);
5670: if (($chome eq '') || ($chome eq 'no_host')) {
5671: return 'error: no such course';
5672: }
5673: my $cstring='';
5674: foreach my $pref (keys(%prefs)) {
5675: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5676: }
5677: $cstring=~s/\&$//;
5678: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5679: }
5680:
5681: # ---------------------------------------------------------- Make/modify course
5682:
5683: sub createcourse {
5684: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5685: $course_owner,$crstype)=@_;
5686: $url=&declutter($url);
5687: my $cid='';
5688: unless (&allowed('ccc',$udom)) {
5689: return 'refused';
5690: }
5691: # ------------------------------------------------------------------- Create ID
5692: my $uname=int(1+rand(9)).
5693: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5694: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5695: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5696: # ----------------------------------------------- Make sure that does not exist
5697: my $uhome=&homeserver($uname,$udom,'true');
5698: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5699: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5700: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5701: $uhome=&homeserver($uname,$udom,'true');
5702: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5703: return 'error: unable to generate unique course-ID';
5704: }
5705: }
5706: # ------------------------------------------------ Check supplied server name
5707: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5708: if (! &is_library($course_server)) {
5709: return 'error:bad server name '.$course_server;
5710: }
5711: # ------------------------------------------------------------- Make the course
5712: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5713: $course_server);
5714: unless ($reply eq 'ok') { return 'error: '.$reply; }
5715: $uhome=&homeserver($uname,$udom,'true');
5716: if (($uhome eq '') || ($uhome eq 'no_host')) {
5717: return 'error: no such course';
5718: }
5719: # ----------------------------------------------------------------- Course made
5720: # log existence
5721: my $newcourse = {
5722: $udom.'_'.$uname => {
5723: description => $description,
5724: inst_code => $inst_code,
5725: owner => $course_owner,
5726: type => $crstype,
5727: },
5728: };
5729: &courseidput($udom,$newcourse,$uhome,'notime');
5730: # set toplevel url
5731: my $topurl=$url;
5732: unless ($nonstandard) {
5733: # ------------------------------------------ For standard courses, make top url
5734: my $mapurl=&clutter($url);
5735: if ($mapurl eq '/res/') { $mapurl=''; }
5736: $env{'form.initmap'}=(<<ENDINITMAP);
5737: <map>
5738: <resource id="1" type="start"></resource>
5739: <resource id="2" src="$mapurl"></resource>
5740: <resource id="3" type="finish"></resource>
5741: <link index="1" from="1" to="2"></link>
5742: <link index="2" from="2" to="3"></link>
5743: </map>
5744: ENDINITMAP
5745: $topurl=&declutter(
5746: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5747: );
5748: }
5749: # ----------------------------------------------------------- Write preferences
5750: &writecoursepref($udom.'_'.$uname,
5751: ('description' => $description,
5752: 'url' => $topurl));
5753: return '/'.$udom.'/'.$uname;
5754: }
5755:
5756: sub is_course {
5757: my ($cdom,$cnum) = @_;
5758: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5759: undef,'.');
5760: if (exists($courses{$cdom.'_'.$cnum})) {
5761: return 1;
5762: }
5763: return 0;
5764: }
5765:
5766: # ---------------------------------------------------------- Assign Custom Role
5767:
5768: sub assigncustomrole {
5769: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
5770: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5771: $end,$start,$deleteflag);
5772: }
5773:
5774: # ----------------------------------------------------------------- Revoke Role
5775:
5776: sub revokerole {
5777: my ($udom,$uname,$url,$role,$deleteflag)=@_;
5778: my $now=time;
5779: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
5780: }
5781:
5782: # ---------------------------------------------------------- Revoke Custom Role
5783:
5784: sub revokecustomrole {
5785: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
5786: my $now=time;
5787: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5788: $deleteflag);
5789: }
5790:
5791: # ------------------------------------------------------------ Disk usage
5792: sub diskusage {
5793: my ($udom,$uname,$directoryRoot)=@_;
5794: $directoryRoot =~ s/\/$//;
5795: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
5796: return $listing;
5797: }
5798:
5799: sub is_locked {
5800: my ($file_name, $domain, $user) = @_;
5801: my @check;
5802: my $is_locked;
5803: push @check, $file_name;
5804: my %locked = &get('file_permissions',\@check,
5805: $env{'user.domain'},$env{'user.name'});
5806: my ($tmp)=keys(%locked);
5807: if ($tmp=~/^error:/) { undef(%locked); }
5808:
5809: if (ref($locked{$file_name}) eq 'ARRAY') {
5810: $is_locked = 'false';
5811: foreach my $entry (@{$locked{$file_name}}) {
5812: if (ref($entry) eq 'ARRAY') {
5813: $is_locked = 'true';
5814: last;
5815: }
5816: }
5817: } else {
5818: $is_locked = 'false';
5819: }
5820: }
5821:
5822: sub declutter_portfile {
5823: my ($file) = @_;
5824: $file =~ s{^(/portfolio/|portfolio/)}{/};
5825: return $file;
5826: }
5827:
5828: # ------------------------------------------------------------- Mark as Read Only
5829:
5830: sub mark_as_readonly {
5831: my ($domain,$user,$files,$what) = @_;
5832: my %current_permissions = &dump('file_permissions',$domain,$user);
5833: my ($tmp)=keys(%current_permissions);
5834: if ($tmp=~/^error:/) { undef(%current_permissions); }
5835: foreach my $file (@{$files}) {
5836: $file = &declutter_portfile($file);
5837: push(@{$current_permissions{$file}},$what);
5838: }
5839: &put('file_permissions',\%current_permissions,$domain,$user);
5840: return;
5841: }
5842:
5843: # ------------------------------------------------------------Save Selected Files
5844:
5845: sub save_selected_files {
5846: my ($user, $path, @files) = @_;
5847: my $filename = $user."savedfiles";
5848: my @other_files = &files_not_in_path($user, $path);
5849: open (OUT, '>'.$tmpdir.$filename);
5850: foreach my $file (@files) {
5851: print (OUT $env{'form.currentpath'}.$file."\n");
5852: }
5853: foreach my $file (@other_files) {
5854: print (OUT $file."\n");
5855: }
5856: close (OUT);
5857: return 'ok';
5858: }
5859:
5860: sub clear_selected_files {
5861: my ($user) = @_;
5862: my $filename = $user."savedfiles";
5863: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5864: print (OUT undef);
5865: close (OUT);
5866: return ("ok");
5867: }
5868:
5869: sub files_in_path {
5870: my ($user, $path) = @_;
5871: my $filename = $user."savedfiles";
5872: my %return_files;
5873: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5874: while (my $line_in = <IN>) {
5875: chomp ($line_in);
5876: my @paths_and_file = split (m!/!, $line_in);
5877: my $file_part = pop (@paths_and_file);
5878: my $path_part = join ('/', @paths_and_file);
5879: $path_part.='/';
5880: my $path_and_file = $path_part.$file_part;
5881: if ($path_part eq $path) {
5882: $return_files{$file_part}= 'selected';
5883: }
5884: }
5885: close (IN);
5886: return (\%return_files);
5887: }
5888:
5889: # called in portfolio select mode, to show files selected NOT in current directory
5890: sub files_not_in_path {
5891: my ($user, $path) = @_;
5892: my $filename = $user."savedfiles";
5893: my @return_files;
5894: my $path_part;
5895: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5896: while (my $line = <IN>) {
5897: #ok, I know it's clunky, but I want it to work
5898: my @paths_and_file = split(m|/|, $line);
5899: my $file_part = pop(@paths_and_file);
5900: chomp($file_part);
5901: my $path_part = join('/', @paths_and_file);
5902: $path_part .= '/';
5903: my $path_and_file = $path_part.$file_part;
5904: if ($path_part ne $path) {
5905: push(@return_files, ($path_and_file));
5906: }
5907: }
5908: close(OUT);
5909: return (@return_files);
5910: }
5911:
5912: #----------------------------------------------Get portfolio file permissions
5913:
5914: sub get_portfile_permissions {
5915: my ($domain,$user) = @_;
5916: my %current_permissions = &dump('file_permissions',$domain,$user);
5917: my ($tmp)=keys(%current_permissions);
5918: if ($tmp=~/^error:/) { undef(%current_permissions); }
5919: return \%current_permissions;
5920: }
5921:
5922: #---------------------------------------------Get portfolio file access controls
5923:
5924: sub get_access_controls {
5925: my ($current_permissions,$group,$file) = @_;
5926: my %access;
5927: my $real_file = $file;
5928: $file =~ s/\.meta$//;
5929: if (defined($file)) {
5930: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
5931: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
5932: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
5933: }
5934: }
5935: } else {
5936: foreach my $key (keys(%{$current_permissions})) {
5937: if ($key =~ /\0accesscontrol$/) {
5938: if (defined($group)) {
5939: if ($key !~ m-^\Q$group\E/-) {
5940: next;
5941: }
5942: }
5943: my ($fullpath) = split(/\0/,$key);
5944: if (ref($$current_permissions{$key}) eq 'HASH') {
5945: foreach my $control (keys(%{$$current_permissions{$key}})) {
5946: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
5947: }
5948: }
5949: }
5950: }
5951: }
5952: return %access;
5953: }
5954:
5955: sub modify_access_controls {
5956: my ($file_name,$changes,$domain,$user)=@_;
5957: my ($outcome,$deloutcome);
5958: my %store_permissions;
5959: my %new_values;
5960: my %new_control;
5961: my %translation;
5962: my @deletions = ();
5963: my $now = time;
5964: if (exists($$changes{'activate'})) {
5965: if (ref($$changes{'activate'}) eq 'HASH') {
5966: my @newitems = sort(keys(%{$$changes{'activate'}}));
5967: my $numnew = scalar(@newitems);
5968: for (my $i=0; $i<$numnew; $i++) {
5969: my $newkey = $newitems[$i];
5970: my $newid = &Apache::loncommon::get_cgi_id();
5971: if ($newkey =~ /^\d+:/) {
5972: $newkey =~ s/^(\d+)/$newid/;
5973: $translation{$1} = $newid;
5974: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
5975: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
5976: $translation{$1} = $newid;
5977: }
5978: $new_values{$file_name."\0".$newkey} =
5979: $$changes{'activate'}{$newitems[$i]};
5980: $new_control{$newkey} = $now;
5981: }
5982: }
5983: }
5984: my %todelete;
5985: my %changed_items;
5986: foreach my $action ('delete','update') {
5987: if (exists($$changes{$action})) {
5988: if (ref($$changes{$action}) eq 'HASH') {
5989: foreach my $key (keys(%{$$changes{$action}})) {
5990: my ($itemnum) = ($key =~ /^([^:]+):/);
5991: if ($action eq 'delete') {
5992: $todelete{$itemnum} = 1;
5993: } else {
5994: $changed_items{$itemnum} = $key;
5995: }
5996: }
5997: }
5998: }
5999: }
6000: # get lock on access controls for file.
6001: my $lockhash = {
6002: $file_name."\0".'locked_access_records' => $env{'user.name'}.
6003: ':'.$env{'user.domain'},
6004: };
6005: my $tries = 0;
6006: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6007:
6008: while (($gotlock ne 'ok') && $tries <3) {
6009: $tries ++;
6010: sleep 1;
6011: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6012: }
6013: if ($gotlock eq 'ok') {
6014: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
6015: my ($tmp)=keys(%curr_permissions);
6016: if ($tmp=~/^error:/) { undef(%curr_permissions); }
6017: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
6018: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
6019: if (ref($curr_controls) eq 'HASH') {
6020: foreach my $control_item (keys(%{$curr_controls})) {
6021: my ($itemnum) = ($control_item =~ /^([^:]+):/);
6022: if (defined($todelete{$itemnum})) {
6023: push(@deletions,$file_name."\0".$control_item);
6024: } else {
6025: if (defined($changed_items{$itemnum})) {
6026: $new_control{$changed_items{$itemnum}} = $now;
6027: push(@deletions,$file_name."\0".$control_item);
6028: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6029: } else {
6030: $new_control{$control_item} = $$curr_controls{$control_item};
6031: }
6032: }
6033: }
6034: }
6035: }
6036: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6037: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6038: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6039: # remove lock
6040: my @del_lock = ($file_name."\0".'locked_access_records');
6041: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6042: my ($file,$group);
6043: if (&is_course($domain,$user)) {
6044: ($group,$file) = split(/\//,$file_name,2);
6045: } else {
6046: $file = $file_name;
6047: }
6048: my $sqlresult =
6049: &update_portfolio_table($user,$domain,$file,'portfolio_access',
6050: $group);
6051: } else {
6052: $outcome = "error: could not obtain lockfile\n";
6053: }
6054: return ($outcome,$deloutcome,\%new_values,\%translation);
6055: }
6056:
6057: sub make_public_indefinitely {
6058: my ($requrl) = @_;
6059: my $now = time;
6060: my $action = 'activate';
6061: my $aclnum = 0;
6062: if (&is_portfolio_url($requrl)) {
6063: my (undef,$udom,$unum,$file_name,$group) =
6064: &parse_portfolio_url($requrl);
6065: my $current_perms = &get_portfile_permissions($udom,$unum);
6066: my %access_controls = &get_access_controls($current_perms,
6067: $group,$file_name);
6068: foreach my $key (keys(%{$access_controls{$file_name}})) {
6069: my ($num,$scope,$end,$start) =
6070: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6071: if ($scope eq 'public') {
6072: if ($start <= $now && $end == 0) {
6073: $action = 'none';
6074: } else {
6075: $action = 'update';
6076: $aclnum = $num;
6077: }
6078: last;
6079: }
6080: }
6081: if ($action eq 'none') {
6082: return 'ok';
6083: } else {
6084: my %changes;
6085: my $newend = 0;
6086: my $newstart = $now;
6087: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6088: $changes{$action}{$newkey} = {
6089: type => 'public',
6090: time => {
6091: start => $newstart,
6092: end => $newend,
6093: },
6094: };
6095: my ($outcome,$deloutcome,$new_values,$translation) =
6096: &modify_access_controls($file_name,\%changes,$udom,$unum);
6097: return $outcome;
6098: }
6099: } else {
6100: return 'invalid';
6101: }
6102: }
6103:
6104: #------------------------------------------------------Get Marked as Read Only
6105:
6106: sub get_marked_as_readonly {
6107: my ($domain,$user,$what,$group) = @_;
6108: my $current_permissions = &get_portfile_permissions($domain,$user);
6109: my @readonly_files;
6110: my $cmp1=$what;
6111: if (ref($what)) { $cmp1=join('',@{$what}) };
6112: while (my ($file_name,$value) = each(%{$current_permissions})) {
6113: if (defined($group)) {
6114: if ($file_name !~ m-^\Q$group\E/-) {
6115: next;
6116: }
6117: }
6118: if (ref($value) eq "ARRAY"){
6119: foreach my $stored_what (@{$value}) {
6120: my $cmp2=$stored_what;
6121: if (ref($stored_what) eq 'ARRAY') {
6122: $cmp2=join('',@{$stored_what});
6123: }
6124: if ($cmp1 eq $cmp2) {
6125: push(@readonly_files, $file_name);
6126: last;
6127: } elsif (!defined($what)) {
6128: push(@readonly_files, $file_name);
6129: last;
6130: }
6131: }
6132: }
6133: }
6134: return @readonly_files;
6135: }
6136: #-----------------------------------------------------------Get Marked as Read Only Hash
6137:
6138: sub get_marked_as_readonly_hash {
6139: my ($current_permissions,$group,$what) = @_;
6140: my %readonly_files;
6141: while (my ($file_name,$value) = each(%{$current_permissions})) {
6142: if (defined($group)) {
6143: if ($file_name !~ m-^\Q$group\E/-) {
6144: next;
6145: }
6146: }
6147: if (ref($value) eq "ARRAY"){
6148: foreach my $stored_what (@{$value}) {
6149: if (ref($stored_what) eq 'ARRAY') {
6150: foreach my $lock_descriptor(@{$stored_what}) {
6151: if ($lock_descriptor eq 'graded') {
6152: $readonly_files{$file_name} = 'graded';
6153: } elsif ($lock_descriptor eq 'handback') {
6154: $readonly_files{$file_name} = 'handback';
6155: } else {
6156: if (!exists($readonly_files{$file_name})) {
6157: $readonly_files{$file_name} = 'locked';
6158: }
6159: }
6160: }
6161: }
6162: }
6163: }
6164: }
6165: return %readonly_files;
6166: }
6167: # ------------------------------------------------------------ Unmark as Read Only
6168:
6169: sub unmark_as_readonly {
6170: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6171: # for portfolio submissions, $what contains [$symb,$crsid]
6172: my ($domain,$user,$what,$file_name,$group) = @_;
6173: $file_name = &declutter_portfile($file_name);
6174: my $symb_crs = $what;
6175: if (ref($what)) { $symb_crs=join('',@$what); }
6176: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
6177: my ($tmp)=keys(%current_permissions);
6178: if ($tmp=~/^error:/) { undef(%current_permissions); }
6179: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
6180: foreach my $file (@readonly_files) {
6181: my $clean_file = &declutter_portfile($file);
6182: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
6183: my $current_locks = $current_permissions{$file};
6184: my @new_locks;
6185: my @del_keys;
6186: if (ref($current_locks) eq "ARRAY"){
6187: foreach my $locker (@{$current_locks}) {
6188: my $compare=$locker;
6189: if (ref($locker) eq 'ARRAY') {
6190: $compare=join('',@{$locker});
6191: if ($compare ne $symb_crs) {
6192: push(@new_locks, $locker);
6193: }
6194: }
6195: }
6196: if (scalar(@new_locks) > 0) {
6197: $current_permissions{$file} = \@new_locks;
6198: } else {
6199: push(@del_keys, $file);
6200: &del('file_permissions',\@del_keys, $domain, $user);
6201: delete($current_permissions{$file});
6202: }
6203: }
6204: }
6205: &put('file_permissions',\%current_permissions,$domain,$user);
6206: return;
6207: }
6208:
6209: # ------------------------------------------------------------ Directory lister
6210:
6211: sub dirlist {
6212: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
6213:
6214: $uri=~s/^\///;
6215: $uri=~s/\/$//;
6216: my ($udom, $uname);
6217: (undef,$udom,$uname)=split(/\//,$uri);
6218: if(defined($userdomain)) {
6219: $udom = $userdomain;
6220: }
6221: if(defined($username)) {
6222: $uname = $username;
6223: }
6224:
6225: my $dirRoot = $perlvar{'lonDocRoot'};
6226: if(defined($alternateDirectoryRoot)) {
6227: $dirRoot = $alternateDirectoryRoot;
6228: $dirRoot =~ s/\/$//;
6229: }
6230:
6231: if($udom) {
6232: if($uname) {
6233: my $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
6234: &homeserver($uname,$udom));
6235: my @listing_results;
6236: if ($listing eq 'unknown_cmd') {
6237: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
6238: &homeserver($uname,$udom));
6239: @listing_results = split(/:/,$listing);
6240: } else {
6241: @listing_results = map { &unescape($_); } split(/:/,$listing);
6242: }
6243: return @listing_results;
6244: } elsif(!defined($alternateDirectoryRoot)) {
6245: my %allusers;
6246: my %servers = &get_servers($udom,'library');
6247: foreach my $tryserver (keys(%servers)) {
6248: my $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
6249: $udom, $tryserver);
6250: my @listing_results;
6251: if ($listing eq 'unknown_cmd') {
6252: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
6253: $udom, $tryserver);
6254: @listing_results = split(/:/,$listing);
6255: } else {
6256: @listing_results =
6257: map { &unescape($_); } split(/:/,$listing);
6258: }
6259: if ($listing_results[0] ne 'no_such_dir' &&
6260: $listing_results[0] ne 'empty' &&
6261: $listing_results[0] ne 'con_lost') {
6262: foreach my $line (@listing_results) {
6263: my ($entry) = split(/&/,$line,2);
6264: $allusers{$entry} = 1;
6265: }
6266: }
6267: }
6268: my $alluserstr='';
6269: foreach my $user (sort(keys(%allusers))) {
6270: $alluserstr.=$user.'&user:';
6271: }
6272: $alluserstr=~s/:$//;
6273: return split(/:/,$alluserstr);
6274: } else {
6275: return ('missing user name');
6276: }
6277: } elsif(!defined($alternateDirectoryRoot)) {
6278: my @all_domains = sort(&all_domains());
6279: foreach my $domain (@all_domains) {
6280: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
6281: }
6282: return @all_domains;
6283: } else {
6284: return ('missing domain');
6285: }
6286: }
6287:
6288: # --------------------------------------------- GetFileTimestamp
6289: # This function utilizes dirlist and returns the date stamp for
6290: # when it was last modified. It will also return an error of -1
6291: # if an error occurs
6292:
6293: ##
6294: ## FIXME: This subroutine assumes its caller knows something about the
6295: ## directory structure of the home server for the student ($root).
6296: ## Not a good assumption to make. Since this is for looking up files
6297: ## in user directories, the full path should be constructed by lond, not
6298: ## whatever machine we request data from.
6299: ##
6300: sub GetFileTimestamp {
6301: my ($studentDomain,$studentName,$filename,$root)=@_;
6302: $studentDomain = &LONCAPA::clean_domain($studentDomain);
6303: $studentName = &LONCAPA::clean_username($studentName);
6304: my $subdir=$studentName.'__';
6305: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
6306: my $proname="$studentDomain/$subdir/$studentName";
6307: $proname .= '/'.$filename;
6308: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
6309: $studentName, $root);
6310: my @stats = split('&', $fileStat);
6311: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6312: # @stats contains first the filename, then the stat output
6313: return $stats[10]; # so this is 10 instead of 9.
6314: } else {
6315: return -1;
6316: }
6317: }
6318:
6319: sub stat_file {
6320: my ($uri) = @_;
6321: $uri = &clutter_with_no_wrapper($uri);
6322:
6323: my ($udom,$uname,$file,$dir);
6324: if ($uri =~ m-^/(uploaded|editupload)/-) {
6325: ($udom,$uname,$file) =
6326: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
6327: $file = 'userfiles/'.$file;
6328: $dir = &propath($udom,$uname);
6329: }
6330: if ($uri =~ m-^/res/-) {
6331: ($udom,$uname) =
6332: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
6333: $file = $uri;
6334: }
6335:
6336: if (!$udom || !$uname || !$file) {
6337: # unable to handle the uri
6338: return ();
6339: }
6340:
6341: my ($result) = &dirlist($file,$udom,$uname,$dir);
6342: my @stats = split('&', $result);
6343:
6344: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6345: shift(@stats); #filename is first
6346: return @stats;
6347: }
6348: return ();
6349: }
6350:
6351: # -------------------------------------------------------- Value of a Condition
6352:
6353: # gets the value of a specific preevaluated condition
6354: # stored in the string $env{user.state.<cid>}
6355: # or looks up a condition reference in the bighash and if if hasn't
6356: # already been evaluated recurses into docondval to get the value of
6357: # the condition, then memoizing it to
6358: # $env{user.state.<cid>.<condition>}
6359: sub directcondval {
6360: my $number=shift;
6361: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
6362: &Apache::lonuserstate::evalstate();
6363: }
6364: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
6365: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
6366: } elsif ($number =~ /^_/) {
6367: my $sub_condition;
6368: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6369: &GDBM_READER(),0640)) {
6370: $sub_condition=$bighash{'conditions'.$number};
6371: untie(%bighash);
6372: }
6373: my $value = &docondval($sub_condition);
6374: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
6375: return $value;
6376: }
6377: if ($env{'user.state.'.$env{'request.course.id'}}) {
6378: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6379: } else {
6380: return 2;
6381: }
6382: }
6383:
6384: # get the collection of conditions for this resource
6385: sub condval {
6386: my $condidx=shift;
6387: my $allpathcond='';
6388: foreach my $cond (split(/\|/,$condidx)) {
6389: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6390: $allpathcond.=
6391: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6392: }
6393: }
6394: $allpathcond=~s/\|$//;
6395: return &docondval($allpathcond);
6396: }
6397:
6398: #evaluates an expression of conditions
6399: sub docondval {
6400: my ($allpathcond) = @_;
6401: my $result=0;
6402: if ($env{'request.course.id'}
6403: && defined($allpathcond)) {
6404: my $operand='|';
6405: my @stack;
6406: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6407: if ($chunk eq '(') {
6408: push @stack,($operand,$result);
6409: } elsif ($chunk eq ')') {
6410: my $before=pop @stack;
6411: if (pop @stack eq '&') {
6412: $result=$result>$before?$before:$result;
6413: } else {
6414: $result=$result>$before?$result:$before;
6415: }
6416: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6417: $operand=$chunk;
6418: } else {
6419: my $new=directcondval($chunk);
6420: if ($operand eq '&') {
6421: $result=$result>$new?$new:$result;
6422: } else {
6423: $result=$result>$new?$result:$new;
6424: }
6425: }
6426: }
6427: }
6428: return $result;
6429: }
6430:
6431: # ---------------------------------------------------- Devalidate courseresdata
6432:
6433: sub devalidatecourseresdata {
6434: my ($coursenum,$coursedomain)=@_;
6435: my $hashid=$coursenum.':'.$coursedomain;
6436: &devalidate_cache_new('courseres',$hashid);
6437: }
6438:
6439:
6440: # --------------------------------------------------- Course Resourcedata Query
6441: #
6442: # Parameters:
6443: # $coursenum - Number of the course.
6444: # $coursedomain - Domain at which the course was created.
6445: # Returns:
6446: # A hash of the course parameters along (I think) with timestamps
6447: # and version info.
6448:
6449: sub get_courseresdata {
6450: my ($coursenum,$coursedomain)=@_;
6451: my $coursehom=&homeserver($coursenum,$coursedomain);
6452: my $hashid=$coursenum.':'.$coursedomain;
6453: my ($result,$cached)=&is_cached_new('courseres',$hashid);
6454: my %dumpreply;
6455: unless (defined($cached)) {
6456: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
6457: $result=\%dumpreply;
6458: my ($tmp) = keys(%dumpreply);
6459: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6460: &do_cache_new('courseres',$hashid,$result,600);
6461: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
6462: return $tmp;
6463: } elsif ($tmp =~ /^(error)/) {
6464: $result=undef;
6465: &do_cache_new('courseres',$hashid,$result,600);
6466: }
6467: }
6468: return $result;
6469: }
6470:
6471: sub devalidateuserresdata {
6472: my ($uname,$udom)=@_;
6473: my $hashid="$udom:$uname";
6474: &devalidate_cache_new('userres',$hashid);
6475: }
6476:
6477: sub get_userresdata {
6478: my ($uname,$udom)=@_;
6479: #most student don\'t have any data set, check if there is some data
6480: if (&EXT_cache_status($udom,$uname)) { return undef; }
6481:
6482: my $hashid="$udom:$uname";
6483: my ($result,$cached)=&is_cached_new('userres',$hashid);
6484: if (!defined($cached)) {
6485: my %resourcedata=&dump('resourcedata',$udom,$uname);
6486: $result=\%resourcedata;
6487: &do_cache_new('userres',$hashid,$result,600);
6488: }
6489: my ($tmp)=keys(%$result);
6490: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
6491: return $result;
6492: }
6493: #error 2 occurs when the .db doesn't exist
6494: if ($tmp!~/error: 2 /) {
6495: &logthis("<font color=\"blue\">WARNING:".
6496: " Trying to get resource data for ".
6497: $uname." at ".$udom.": ".
6498: $tmp."</font>");
6499: } elsif ($tmp=~/error: 2 /) {
6500: #&EXT_cache_set($udom,$uname);
6501: &do_cache_new('userres',$hashid,undef,600);
6502: undef($tmp); # not really an error so don't send it back
6503: }
6504: return $tmp;
6505: }
6506: #----------------------------------------------- resdata - return resource data
6507: # Purpose:
6508: # Return resource data for either users or for a course.
6509: # Parameters:
6510: # $name - Course/user name.
6511: # $domain - Name of the domain the user/course is registered on.
6512: # $type - Type of thing $name is (must be 'course' or 'user'
6513: # @which - Array of names of resources desired.
6514: # Returns:
6515: # The value of the first reasource in @which that is found in the
6516: # resource hash.
6517: # Exceptional Conditions:
6518: # If the $type passed in is not valid (not the string 'course' or
6519: # 'user', an undefined reference is returned.
6520: # If none of the resources are found, an undef is returned
6521: sub resdata {
6522: my ($name,$domain,$type,@which)=@_;
6523: my $result;
6524: if ($type eq 'course') {
6525: $result=&get_courseresdata($name,$domain);
6526: } elsif ($type eq 'user') {
6527: $result=&get_userresdata($name,$domain);
6528: }
6529: if (!ref($result)) { return $result; }
6530: foreach my $item (@which) {
6531: if (defined($result->{$item->[0]})) {
6532: return [$result->{$item->[0]},$item->[1]];
6533: }
6534: }
6535: return undef;
6536: }
6537:
6538: #
6539: # EXT resource caching routines
6540: #
6541:
6542: sub clear_EXT_cache_status {
6543: &delenv('cache.EXT.');
6544: }
6545:
6546: sub EXT_cache_status {
6547: my ($target_domain,$target_user) = @_;
6548: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6549: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6550: # We know already the user has no data
6551: return 1;
6552: } else {
6553: return 0;
6554: }
6555: }
6556:
6557: sub EXT_cache_set {
6558: my ($target_domain,$target_user) = @_;
6559: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6560: #&appenv({$cachename => time});
6561: }
6562:
6563: # --------------------------------------------------------- Value of a Variable
6564: sub EXT {
6565:
6566: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6567: unless ($varname) { return ''; }
6568: #get real user name/domain, courseid and symb
6569: my $courseid;
6570: my $publicuser;
6571: if ($symbparm) {
6572: $symbparm=&get_symb_from_alias($symbparm);
6573: }
6574: if (!($uname && $udom)) {
6575: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6576: if (!$symbparm) { $symbparm=$cursymb; }
6577: } else {
6578: $courseid=$env{'request.course.id'};
6579: }
6580: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6581: my $rest;
6582: if (defined($therest[0])) {
6583: $rest=join('.',@therest);
6584: } else {
6585: $rest='';
6586: }
6587:
6588: my $qualifierrest=$qualifier;
6589: if ($rest) { $qualifierrest.='.'.$rest; }
6590: my $spacequalifierrest=$space;
6591: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6592: if ($realm eq 'user') {
6593: # --------------------------------------------------------------- user.resource
6594: if ($space eq 'resource') {
6595: if ( (defined($Apache::lonhomework::parsing_a_problem)
6596: || defined($Apache::lonhomework::parsing_a_task))
6597: &&
6598: ($symbparm eq &symbread()) ) {
6599: # if we are in the middle of processing the resource the
6600: # get the value we are planning on committing
6601: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6602: return $Apache::lonhomework::results{$qualifierrest};
6603: } else {
6604: return $Apache::lonhomework::history{$qualifierrest};
6605: }
6606: } else {
6607: my %restored;
6608: if ($publicuser || $env{'request.state'} eq 'construct') {
6609: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6610: } else {
6611: %restored=&restore($symbparm,$courseid,$udom,$uname);
6612: }
6613: return $restored{$qualifierrest};
6614: }
6615: # ----------------------------------------------------------------- user.access
6616: } elsif ($space eq 'access') {
6617: # FIXME - not supporting calls for a specific user
6618: return &allowed($qualifier,$rest);
6619: # ------------------------------------------ user.preferences, user.environment
6620: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6621: if (($uname eq $env{'user.name'}) &&
6622: ($udom eq $env{'user.domain'})) {
6623: return $env{join('.',('environment',$qualifierrest))};
6624: } else {
6625: my %returnhash;
6626: if (!$publicuser) {
6627: %returnhash=&userenvironment($udom,$uname,
6628: $qualifierrest);
6629: }
6630: return $returnhash{$qualifierrest};
6631: }
6632: # ----------------------------------------------------------------- user.course
6633: } elsif ($space eq 'course') {
6634: # FIXME - not supporting calls for a specific user
6635: return $env{join('.',('request.course',$qualifier))};
6636: # ------------------------------------------------------------------- user.role
6637: } elsif ($space eq 'role') {
6638: # FIXME - not supporting calls for a specific user
6639: my ($role,$where)=split(/\./,$env{'request.role'});
6640: if ($qualifier eq 'value') {
6641: return $role;
6642: } elsif ($qualifier eq 'extent') {
6643: return $where;
6644: }
6645: # ----------------------------------------------------------------- user.domain
6646: } elsif ($space eq 'domain') {
6647: return $udom;
6648: # ------------------------------------------------------------------- user.name
6649: } elsif ($space eq 'name') {
6650: return $uname;
6651: # ---------------------------------------------------- Any other user namespace
6652: } else {
6653: my %reply;
6654: if (!$publicuser) {
6655: %reply=&get($space,[$qualifierrest],$udom,$uname);
6656: }
6657: return $reply{$qualifierrest};
6658: }
6659: } elsif ($realm eq 'query') {
6660: # ---------------------------------------------- pull stuff out of query string
6661: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6662: [$spacequalifierrest]);
6663: return $env{'form.'.$spacequalifierrest};
6664: } elsif ($realm eq 'request') {
6665: # ------------------------------------------------------------- request.browser
6666: if ($space eq 'browser') {
6667: if ($qualifier eq 'textremote') {
6668: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6669: return 1;
6670: } else {
6671: return 0;
6672: }
6673: } else {
6674: return $env{'browser.'.$qualifier};
6675: }
6676: # ------------------------------------------------------------ request.filename
6677: } else {
6678: return $env{'request.'.$spacequalifierrest};
6679: }
6680: } elsif ($realm eq 'course') {
6681: # ---------------------------------------------------------- course.description
6682: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6683: } elsif ($realm eq 'resource') {
6684:
6685: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6686: if (!$symbparm) { $symbparm=&symbread(); }
6687: }
6688:
6689: if ($space eq 'title') {
6690: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6691: return &gettitle($symbparm);
6692: }
6693:
6694: if ($space eq 'map') {
6695: my ($map) = &decode_symb($symbparm);
6696: return &symbread($map);
6697: }
6698: if ($space eq 'filename') {
6699: if ($symbparm) {
6700: return &clutter((&decode_symb($symbparm))[2]);
6701: }
6702: return &hreflocation('',$env{'request.filename'});
6703: }
6704:
6705: my ($section, $group, @groups);
6706: my ($courselevelm,$courselevel);
6707: if ($symbparm && defined($courseid) &&
6708: $courseid eq $env{'request.course.id'}) {
6709:
6710: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6711:
6712: # ----------------------------------------------------- Cascading lookup scheme
6713: my $symbp=$symbparm;
6714: my $mapp=&deversion((&decode_symb($symbp))[0]);
6715:
6716: my $symbparm=$symbp.'.'.$spacequalifierrest;
6717: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6718:
6719: if (($env{'user.name'} eq $uname) &&
6720: ($env{'user.domain'} eq $udom)) {
6721: $section=$env{'request.course.sec'};
6722: @groups = split(/:/,$env{'request.course.groups'});
6723: @groups=&sort_course_groups($courseid,@groups);
6724: } else {
6725: if (! defined($usection)) {
6726: $section=&getsection($udom,$uname,$courseid);
6727: } else {
6728: $section = $usection;
6729: }
6730: @groups = &get_users_groups($udom,$uname,$courseid);
6731: }
6732:
6733: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6734: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6735: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6736:
6737: $courselevel=$courseid.'.'.$spacequalifierrest;
6738: my $courselevelr=$courseid.'.'.$symbparm;
6739: $courselevelm=$courseid.'.'.$mapparm;
6740:
6741: # ----------------------------------------------------------- first, check user
6742:
6743: my $userreply=&resdata($uname,$udom,'user',
6744: ([$courselevelr,'resource'],
6745: [$courselevelm,'map' ],
6746: [$courselevel, 'course' ]));
6747: if (defined($userreply)) { return &get_reply($userreply); }
6748:
6749: # ------------------------------------------------ second, check some of course
6750: my $coursereply;
6751: if (@groups > 0) {
6752: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6753: $mapparm,$spacequalifierrest);
6754: if (defined($coursereply)) { return &get_reply($coursereply); }
6755: }
6756:
6757: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6758: $env{'course.'.$courseid.'.domain'},
6759: 'course',
6760: ([$seclevelr, 'resource'],
6761: [$seclevelm, 'map' ],
6762: [$seclevel, 'course' ],
6763: [$courselevelr,'resource']));
6764: if (defined($coursereply)) { return &get_reply($coursereply); }
6765:
6766: # ------------------------------------------------------ third, check map parms
6767: my %parmhash=();
6768: my $thisparm='';
6769: if (tie(%parmhash,'GDBM_File',
6770: $env{'request.course.fn'}.'_parms.db',
6771: &GDBM_READER(),0640)) {
6772: $thisparm=$parmhash{$symbparm};
6773: untie(%parmhash);
6774: }
6775: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
6776: }
6777: # ------------------------------------------ fourth, look in resource metadata
6778:
6779: $spacequalifierrest=~s/\./\_/;
6780: my $filename;
6781: if (!$symbparm) { $symbparm=&symbread(); }
6782: if ($symbparm) {
6783: $filename=(&decode_symb($symbparm))[2];
6784: } else {
6785: $filename=$env{'request.filename'};
6786: }
6787: my $metadata=&metadata($filename,$spacequalifierrest);
6788: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6789: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6790: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6791:
6792: # ---------------------------------------------- fourth, look in rest of course
6793: if ($symbparm && defined($courseid) &&
6794: $courseid eq $env{'request.course.id'}) {
6795: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6796: $env{'course.'.$courseid.'.domain'},
6797: 'course',
6798: ([$courselevelm,'map' ],
6799: [$courselevel, 'course']));
6800: if (defined($coursereply)) { return &get_reply($coursereply); }
6801: }
6802: # ------------------------------------------------------------------ Cascade up
6803: unless ($space eq '0') {
6804: my @parts=split(/_/,$space);
6805: my $id=pop(@parts);
6806: my $part=join('_',@parts);
6807: if ($part eq '') { $part='0'; }
6808: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6809: $symbparm,$udom,$uname,$section,1);
6810: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
6811: }
6812: if ($recurse) { return undef; }
6813: my $pack_def=&packages_tab_default($filename,$varname);
6814: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
6815: # ---------------------------------------------------- Any other user namespace
6816: } elsif ($realm eq 'environment') {
6817: # ----------------------------------------------------------------- environment
6818: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6819: return $env{'environment.'.$spacequalifierrest};
6820: } else {
6821: if ($uname eq 'anonymous' && $udom eq '') {
6822: return '';
6823: }
6824: my %returnhash=&userenvironment($udom,$uname,
6825: $spacequalifierrest);
6826: return $returnhash{$spacequalifierrest};
6827: }
6828: } elsif ($realm eq 'system') {
6829: # ----------------------------------------------------------------- system.time
6830: if ($space eq 'time') {
6831: return time;
6832: }
6833: } elsif ($realm eq 'server') {
6834: # ----------------------------------------------------------------- system.time
6835: if ($space eq 'name') {
6836: return $ENV{'SERVER_NAME'};
6837: }
6838: }
6839: return '';
6840: }
6841:
6842: sub get_reply {
6843: my ($reply_value) = @_;
6844: if (ref($reply_value) eq 'ARRAY') {
6845: if (wantarray) {
6846: return @$reply_value;
6847: }
6848: return $reply_value->[0];
6849: } else {
6850: return $reply_value;
6851: }
6852: }
6853:
6854: sub check_group_parms {
6855: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
6856: my @groupitems = ();
6857: my $resultitem;
6858: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
6859: foreach my $group (@{$groups}) {
6860: foreach my $level (@levels) {
6861: my $item = $courseid.'.['.$group.'].'.$level->[0];
6862: push(@groupitems,[$item,$level->[1]]);
6863: }
6864: }
6865: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
6866: $env{'course.'.$courseid.'.domain'},
6867: 'course',@groupitems);
6868: return $coursereply;
6869: }
6870:
6871: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
6872: my ($courseid,@groups) = @_;
6873: @groups = sort(@groups);
6874: return @groups;
6875: }
6876:
6877: sub packages_tab_default {
6878: my ($uri,$varname)=@_;
6879: my (undef,$part,$name)=split(/\./,$varname);
6880:
6881: my (@extension,@specifics,$do_default);
6882: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
6883: my ($pack_type,$pack_part)=split(/_/,$package,2);
6884: if ($pack_type eq 'default') {
6885: $do_default=1;
6886: } elsif ($pack_type eq 'extension') {
6887: push(@extension,[$package,$pack_type,$pack_part]);
6888: } elsif ($pack_part eq $part || $pack_type eq 'part') {
6889: # only look at packages defaults for packages that this id is
6890: push(@specifics,[$package,$pack_type,$pack_part]);
6891: }
6892: }
6893: # first look for a package that matches the requested part id
6894: foreach my $package (@specifics) {
6895: my (undef,$pack_type,$pack_part)=@{$package};
6896: next if ($pack_part ne $part);
6897: if (defined($packagetab{"$pack_type&$name&default"})) {
6898: return $packagetab{"$pack_type&$name&default"};
6899: }
6900: }
6901: # look for any possible matching non extension_ package
6902: foreach my $package (@specifics) {
6903: my (undef,$pack_type,$pack_part)=@{$package};
6904: if (defined($packagetab{"$pack_type&$name&default"})) {
6905: return $packagetab{"$pack_type&$name&default"};
6906: }
6907: if ($pack_type eq 'part') { $pack_part='0'; }
6908: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
6909: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
6910: }
6911: }
6912: # look for any posible extension_ match
6913: foreach my $package (@extension) {
6914: my ($package,$pack_type)=@{$package};
6915: if (defined($packagetab{"$pack_type&$name&default"})) {
6916: return $packagetab{"$pack_type&$name&default"};
6917: }
6918: if (defined($packagetab{$package."&$name&default"})) {
6919: return $packagetab{$package."&$name&default"};
6920: }
6921: }
6922: # look for a global default setting
6923: if ($do_default && defined($packagetab{"default&$name&default"})) {
6924: return $packagetab{"default&$name&default"};
6925: }
6926: return undef;
6927: }
6928:
6929: sub add_prefix_and_part {
6930: my ($prefix,$part)=@_;
6931: my $keyroot;
6932: if (defined($prefix) && $prefix !~ /^__/) {
6933: # prefix that has a part already
6934: $keyroot=$prefix;
6935: } elsif (defined($prefix)) {
6936: # prefix that is missing a part
6937: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
6938: } else {
6939: # no prefix at all
6940: if (defined($part)) { $keyroot='_'.$part; }
6941: }
6942: return $keyroot;
6943: }
6944:
6945: # ---------------------------------------------------------------- Get metadata
6946:
6947: my %metaentry;
6948: sub metadata {
6949: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
6950: $uri=&declutter($uri);
6951: # if it is a non metadata possible uri return quickly
6952: if (($uri eq '') ||
6953: (($uri =~ m|^/*adm/|) &&
6954: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
6955: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
6956: return undef;
6957: }
6958: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
6959: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
6960: return undef;
6961: }
6962: my $filename=$uri;
6963: $uri=~s/\.meta$//;
6964: #
6965: # Is the metadata already cached?
6966: # Look at timestamp of caching
6967: # Everything is cached by the main uri, libraries are never directly cached
6968: #
6969: if (!defined($liburi)) {
6970: my ($result,$cached)=&is_cached_new('meta',$uri);
6971: if (defined($cached)) { return $result->{':'.$what}; }
6972: }
6973: {
6974: #
6975: # Is this a recursive call for a library?
6976: #
6977: # if (! exists($metacache{$uri})) {
6978: # $metacache{$uri}={};
6979: # }
6980: my $cachetime = 60*60;
6981: if ($liburi) {
6982: $liburi=&declutter($liburi);
6983: $filename=$liburi;
6984: } else {
6985: &devalidate_cache_new('meta',$uri);
6986: undef(%metaentry);
6987: }
6988: my %metathesekeys=();
6989: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
6990: my $metastring;
6991: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
6992: my $which = &hreflocation('','/'.($liburi || $uri));
6993: $metastring =
6994: &Apache::lonnet::ssi_body($which,
6995: ('grade_target' => 'meta'));
6996: $cachetime = 1; # only want this cached in the child not long term
6997: } elsif ($uri !~ m -^(editupload)/-) {
6998: my $file=&filelocation('',&clutter($filename));
6999: #push(@{$metaentry{$uri.'.file'}},$file);
7000: $metastring=&getfile($file);
7001: }
7002: my $parser=HTML::LCParser->new(\$metastring);
7003: my $token;
7004: undef %metathesekeys;
7005: while ($token=$parser->get_token) {
7006: if ($token->[0] eq 'S') {
7007: if (defined($token->[2]->{'package'})) {
7008: #
7009: # This is a package - get package info
7010: #
7011: my $package=$token->[2]->{'package'};
7012: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7013: if (defined($token->[2]->{'id'})) {
7014: $keyroot.='_'.$token->[2]->{'id'};
7015: }
7016: if ($metaentry{':packages'}) {
7017: $metaentry{':packages'}.=','.$package.$keyroot;
7018: } else {
7019: $metaentry{':packages'}=$package.$keyroot;
7020: }
7021: foreach my $pack_entry (keys(%packagetab)) {
7022: my $part=$keyroot;
7023: $part=~s/^\_//;
7024: if ($pack_entry=~/^\Q$package\E\&/ ||
7025: $pack_entry=~/^\Q$package\E_0\&/) {
7026: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
7027: # ignore package.tab specified default values
7028: # here &package_tab_default() will fetch those
7029: if ($subp eq 'default') { next; }
7030: my $value=$packagetab{$pack_entry};
7031: my $unikey;
7032: if ($pack =~ /_0$/) {
7033: $unikey='parameter_0_'.$name;
7034: $part=0;
7035: } else {
7036: $unikey='parameter'.$keyroot.'_'.$name;
7037: }
7038: if ($subp eq 'display') {
7039: $value.=' [Part: '.$part.']';
7040: }
7041: $metaentry{':'.$unikey.'.part'}=$part;
7042: $metathesekeys{$unikey}=1;
7043: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7044: $metaentry{':'.$unikey.'.'.$subp}=$value;
7045: }
7046: if (defined($metaentry{':'.$unikey.'.default'})) {
7047: $metaentry{':'.$unikey}=
7048: $metaentry{':'.$unikey.'.default'};
7049: }
7050: }
7051: }
7052: } else {
7053: #
7054: # This is not a package - some other kind of start tag
7055: #
7056: my $entry=$token->[1];
7057: my $unikey;
7058: if ($entry eq 'import') {
7059: $unikey='';
7060: } else {
7061: $unikey=$entry;
7062: }
7063: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7064:
7065: if (defined($token->[2]->{'id'})) {
7066: $unikey.='_'.$token->[2]->{'id'};
7067: }
7068:
7069: if ($entry eq 'import') {
7070: #
7071: # Importing a library here
7072: #
7073: if ($depthcount<20) {
7074: my $location=$parser->get_text('/import');
7075: my $dir=$filename;
7076: $dir=~s|[^/]*$||;
7077: $location=&filelocation($dir,$location);
7078: my $metadata =
7079: &metadata($uri,'keys', $location,$unikey,
7080: $depthcount+1);
7081: foreach my $meta (split(',',$metadata)) {
7082: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7083: $metathesekeys{$meta}=1;
7084: }
7085: }
7086: } else {
7087:
7088: if (defined($token->[2]->{'name'})) {
7089: $unikey.='_'.$token->[2]->{'name'};
7090: }
7091: $metathesekeys{$unikey}=1;
7092: foreach my $param (@{$token->[3]}) {
7093: $metaentry{':'.$unikey.'.'.$param} =
7094: $token->[2]->{$param};
7095: }
7096: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7097: my $default=$metaentry{':'.$unikey.'.default'};
7098: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7099: # only ws inside the tag, and not in default, so use default
7100: # as value
7101: $metaentry{':'.$unikey}=$default;
7102: } elsif ( $internaltext =~ /\S/ ) {
7103: # something interesting inside the tag
7104: $metaentry{':'.$unikey}=$internaltext;
7105: } else {
7106: # no interesting values, don't set a default
7107: }
7108: # end of not-a-package not-a-library import
7109: }
7110: # end of not-a-package start tag
7111: }
7112: # the next is the end of "start tag"
7113: }
7114: }
7115: my ($extension) = ($uri =~ /\.(\w+)$/);
7116: $extension = lc($extension);
7117: if ($extension eq 'htm') { $extension='html'; }
7118:
7119: foreach my $key (keys(%packagetab)) {
7120: #no specific packages #how's our extension
7121: if ($key!~/^extension_\Q$extension\E&/) { next; }
7122: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7123: \%metathesekeys);
7124: }
7125:
7126: if (!exists($metaentry{':packages'})
7127: || $packagetab{"import_defaults&extension_$extension"}) {
7128: foreach my $key (keys(%packagetab)) {
7129: #no specific packages well let's get default then
7130: if ($key!~/^default&/) { next; }
7131: &metadata_create_package_def($uri,$key,'default',
7132: \%metathesekeys);
7133: }
7134: }
7135: # are there custom rights to evaluate
7136: if ($metaentry{':copyright'} eq 'custom') {
7137:
7138: #
7139: # Importing a rights file here
7140: #
7141: unless ($depthcount) {
7142: my $location=$metaentry{':customdistributionfile'};
7143: my $dir=$filename;
7144: $dir=~s|[^/]*$||;
7145: $location=&filelocation($dir,$location);
7146: my $rights_metadata =
7147: &metadata($uri,'keys',$location,'_rights',
7148: $depthcount+1);
7149: foreach my $rights (split(',',$rights_metadata)) {
7150: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7151: $metathesekeys{$rights}=1;
7152: }
7153: }
7154: }
7155: # uniqifiy package listing
7156: my %seen;
7157: my @uniq_packages =
7158: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
7159: $metaentry{':packages'} = join(',',@uniq_packages);
7160:
7161: $metaentry{':keys'} = join(',',keys(%metathesekeys));
7162: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
7163: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
7164: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
7165: # this is the end of "was not already recently cached
7166: }
7167: return $metaentry{':'.$what};
7168: }
7169:
7170: sub metadata_create_package_def {
7171: my ($uri,$key,$package,$metathesekeys)=@_;
7172: my ($pack,$name,$subp)=split(/\&/,$key);
7173: if ($subp eq 'default') { next; }
7174:
7175: if (defined($metaentry{':packages'})) {
7176: $metaentry{':packages'}.=','.$package;
7177: } else {
7178: $metaentry{':packages'}=$package;
7179: }
7180: my $value=$packagetab{$key};
7181: my $unikey;
7182: $unikey='parameter_0_'.$name;
7183: $metaentry{':'.$unikey.'.part'}=0;
7184: $$metathesekeys{$unikey}=1;
7185: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7186: $metaentry{':'.$unikey.'.'.$subp}=$value;
7187: }
7188: if (defined($metaentry{':'.$unikey.'.default'})) {
7189: $metaentry{':'.$unikey}=
7190: $metaentry{':'.$unikey.'.default'};
7191: }
7192: }
7193:
7194: sub metadata_generate_part0 {
7195: my ($metadata,$metacache,$uri) = @_;
7196: my %allnames;
7197: foreach my $metakey (keys(%$metadata)) {
7198: if ($metakey=~/^parameter\_(.*)/) {
7199: my $part=$$metacache{':'.$metakey.'.part'};
7200: my $name=$$metacache{':'.$metakey.'.name'};
7201: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
7202: $allnames{$name}=$part;
7203: }
7204: }
7205: }
7206: foreach my $name (keys(%allnames)) {
7207: $$metadata{"parameter_0_$name"}=1;
7208: my $key=":parameter_0_$name";
7209: $$metacache{"$key.part"}='0';
7210: $$metacache{"$key.name"}=$name;
7211: $$metacache{"$key.type"}=$$metacache{':parameter_'.
7212: $allnames{$name}.'_'.$name.
7213: '.type'};
7214: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
7215: '.display'};
7216: my $expr='[Part: '.$allnames{$name}.']';
7217: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
7218: $$metacache{"$key.display"}=$olddis;
7219: }
7220: }
7221:
7222: # ------------------------------------------------------ Devalidate title cache
7223:
7224: sub devalidate_title_cache {
7225: my ($url)=@_;
7226: if (!$env{'request.course.id'}) { return; }
7227: my $symb=&symbread($url);
7228: if (!$symb) { return; }
7229: my $key=$env{'request.course.id'}."\0".$symb;
7230: &devalidate_cache_new('title',$key);
7231: }
7232:
7233: # ------------------------------------------------- Get the title of a resource
7234:
7235: sub gettitle {
7236: my $urlsymb=shift;
7237: my $symb=&symbread($urlsymb);
7238: if ($symb) {
7239: my $key=$env{'request.course.id'}."\0".$symb;
7240: my ($result,$cached)=&is_cached_new('title',$key);
7241: if (defined($cached)) {
7242: return $result;
7243: }
7244: my ($map,$resid,$url)=&decode_symb($symb);
7245: my $title='';
7246: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
7247: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
7248: } else {
7249: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7250: &GDBM_READER(),0640)) {
7251: my $mapid=$bighash{'map_pc_'.&clutter($map)};
7252: $title=$bighash{'title_'.$mapid.'.'.$resid};
7253: untie(%bighash);
7254: }
7255: }
7256: $title=~s/\&colon\;/\:/gs;
7257: if ($title) {
7258: return &do_cache_new('title',$key,$title,600);
7259: }
7260: $urlsymb=$url;
7261: }
7262: my $title=&metadata($urlsymb,'title');
7263: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
7264: return $title;
7265: }
7266:
7267: sub get_slot {
7268: my ($which,$cnum,$cdom)=@_;
7269: if (!$cnum || !$cdom) {
7270: (undef,my $courseid)=&whichuser();
7271: $cdom=$env{'course.'.$courseid.'.domain'};
7272: $cnum=$env{'course.'.$courseid.'.num'};
7273: }
7274: my $key=join("\0",'slots',$cdom,$cnum,$which);
7275: my %slotinfo;
7276: if (exists($remembered{$key})) {
7277: $slotinfo{$which} = $remembered{$key};
7278: } else {
7279: %slotinfo=&get('slots',[$which],$cdom,$cnum);
7280: &Apache::lonhomework::showhash(%slotinfo);
7281: my ($tmp)=keys(%slotinfo);
7282: if ($tmp=~/^error:/) { return (); }
7283: $remembered{$key} = $slotinfo{$which};
7284: }
7285: if (ref($slotinfo{$which}) eq 'HASH') {
7286: return %{$slotinfo{$which}};
7287: }
7288: return $slotinfo{$which};
7289: }
7290: # ------------------------------------------------- Update symbolic store links
7291:
7292: sub symblist {
7293: my ($mapname,%newhash)=@_;
7294: $mapname=&deversion(&declutter($mapname));
7295: my %hash;
7296: if (($env{'request.course.fn'}) && (%newhash)) {
7297: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7298: &GDBM_WRCREAT(),0640)) {
7299: foreach my $url (keys %newhash) {
7300: next if ($url eq 'last_known'
7301: && $env{'form.no_update_last_known'});
7302: $hash{declutter($url)}=&encode_symb($mapname,
7303: $newhash{$url}->[1],
7304: $newhash{$url}->[0]);
7305: }
7306: if (untie(%hash)) {
7307: return 'ok';
7308: }
7309: }
7310: }
7311: return 'error';
7312: }
7313:
7314: # --------------------------------------------------------------- Verify a symb
7315:
7316: sub symbverify {
7317: my ($symb,$thisurl)=@_;
7318: my $thisfn=$thisurl;
7319: $thisfn=&declutter($thisfn);
7320: # direct jump to resource in page or to a sequence - will construct own symbs
7321: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
7322: # check URL part
7323: my ($map,$resid,$url)=&decode_symb($symb);
7324:
7325: unless ($url eq $thisfn) { return 0; }
7326:
7327: $symb=&symbclean($symb);
7328: $thisurl=&deversion($thisurl);
7329: $thisfn=&deversion($thisfn);
7330:
7331: my %bighash;
7332: my $okay=0;
7333:
7334: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7335: &GDBM_READER(),0640)) {
7336: my $ids=$bighash{'ids_'.&clutter($thisurl)};
7337: unless ($ids) {
7338: $ids=$bighash{'ids_/'.$thisurl};
7339: }
7340: if ($ids) {
7341: # ------------------------------------------------------------------- Has ID(s)
7342: foreach my $id (split(/\,/,$ids)) {
7343: my ($mapid,$resid)=split(/\./,$id);
7344: if (
7345: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
7346: eq $symb) {
7347: if (($env{'request.role.adv'}) ||
7348: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
7349: $okay=1;
7350: }
7351: }
7352: }
7353: }
7354: untie(%bighash);
7355: }
7356: return $okay;
7357: }
7358:
7359: # --------------------------------------------------------------- Clean-up symb
7360:
7361: sub symbclean {
7362: my $symb=shift;
7363: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7364: # remove version from map
7365: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
7366:
7367: # remove version from URL
7368: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
7369:
7370: # remove wrapper
7371:
7372: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
7373: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
7374: return $symb;
7375: }
7376:
7377: # ---------------------------------------------- Split symb to find map and url
7378:
7379: sub encode_symb {
7380: my ($map,$resid,$url)=@_;
7381: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
7382: }
7383:
7384: sub decode_symb {
7385: my $symb=shift;
7386: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7387: my ($map,$resid,$url)=split(/___/,$symb);
7388: return (&fixversion($map),$resid,&fixversion($url));
7389: }
7390:
7391: sub fixversion {
7392: my $fn=shift;
7393: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
7394: my %bighash;
7395: my $uri=&clutter($fn);
7396: my $key=$env{'request.course.id'}.'_'.$uri;
7397: # is this cached?
7398: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7399: if (defined($cached)) { return $result; }
7400: # unfortunately not cached, or expired
7401: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7402: &GDBM_READER(),0640)) {
7403: if ($bighash{'version_'.$uri}) {
7404: my $version=$bighash{'version_'.$uri};
7405: unless (($version eq 'mostrecent') ||
7406: ($version==&getversion($uri))) {
7407: $uri=~s/\.(\w+)$/\.$version\.$1/;
7408: }
7409: }
7410: untie %bighash;
7411: }
7412: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7413: }
7414:
7415: sub deversion {
7416: my $url=shift;
7417: $url=~s/\.\d+\.(\w+)$/\.$1/;
7418: return $url;
7419: }
7420:
7421: # ------------------------------------------------------ Return symb list entry
7422:
7423: sub symbread {
7424: my ($thisfn,$donotrecurse)=@_;
7425: my $cache_str='request.symbread.cached.'.$thisfn;
7426: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7427: # no filename provided? try from environment
7428: unless ($thisfn) {
7429: if ($env{'request.symb'}) {
7430: return $env{$cache_str}=&symbclean($env{'request.symb'});
7431: }
7432: $thisfn=$env{'request.filename'};
7433: }
7434: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7435: # is that filename actually a symb? Verify, clean, and return
7436: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7437: if (&symbverify($thisfn,$1)) {
7438: return $env{$cache_str}=&symbclean($thisfn);
7439: }
7440: }
7441: $thisfn=declutter($thisfn);
7442: my %hash;
7443: my %bighash;
7444: my $syval='';
7445: if (($env{'request.course.fn'}) && ($thisfn)) {
7446: my $targetfn = $thisfn;
7447: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7448: $targetfn = 'adm/wrapper/'.$thisfn;
7449: }
7450: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
7451: $targetfn=$1;
7452: }
7453: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7454: &GDBM_READER(),0640)) {
7455: $syval=$hash{$targetfn};
7456: untie(%hash);
7457: }
7458: # ---------------------------------------------------------- There was an entry
7459: if ($syval) {
7460: #unless ($syval=~/\_\d+$/) {
7461: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
7462: #&appenv({'request.ambiguous' => $thisfn});
7463: #return $env{$cache_str}='';
7464: #}
7465: #$syval.=$1;
7466: #}
7467: } else {
7468: # ------------------------------------------------------- Was not in symb table
7469: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7470: &GDBM_READER(),0640)) {
7471: # ---------------------------------------------- Get ID(s) for current resource
7472: my $ids=$bighash{'ids_'.&clutter($thisfn)};
7473: unless ($ids) {
7474: $ids=$bighash{'ids_/'.$thisfn};
7475: }
7476: unless ($ids) {
7477: # alias?
7478: $ids=$bighash{'mapalias_'.$thisfn};
7479: }
7480: if ($ids) {
7481: # ------------------------------------------------------------------- Has ID(s)
7482: my @possibilities=split(/\,/,$ids);
7483: if ($#possibilities==0) {
7484: # ----------------------------------------------- There is only one possibility
7485: my ($mapid,$resid)=split(/\./,$ids);
7486: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7487: $resid,$thisfn);
7488: } elsif (!$donotrecurse) {
7489: # ------------------------------------------ There is more than one possibility
7490: my $realpossible=0;
7491: foreach my $id (@possibilities) {
7492: my $file=$bighash{'src_'.$id};
7493: if (&allowed('bre',$file)) {
7494: my ($mapid,$resid)=split(/\./,$id);
7495: if ($bighash{'map_type_'.$mapid} ne 'page') {
7496: $realpossible++;
7497: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7498: $resid,$thisfn);
7499: }
7500: }
7501: }
7502: if ($realpossible!=1) { $syval=''; }
7503: } else {
7504: $syval='';
7505: }
7506: }
7507: untie(%bighash)
7508: }
7509: }
7510: if ($syval) {
7511: return $env{$cache_str}=$syval;
7512: }
7513: }
7514: &appenv({'request.ambiguous' => $thisfn});
7515: return $env{$cache_str}='';
7516: }
7517:
7518: # ---------------------------------------------------------- Return random seed
7519:
7520: sub numval {
7521: my $txt=shift;
7522: $txt=~tr/A-J/0-9/;
7523: $txt=~tr/a-j/0-9/;
7524: $txt=~tr/K-T/0-9/;
7525: $txt=~tr/k-t/0-9/;
7526: $txt=~tr/U-Z/0-5/;
7527: $txt=~tr/u-z/0-5/;
7528: $txt=~s/\D//g;
7529: if ($_64bit) { if ($txt > 2**32) { return -1; } }
7530: return int($txt);
7531: }
7532:
7533: sub numval2 {
7534: my $txt=shift;
7535: $txt=~tr/A-J/0-9/;
7536: $txt=~tr/a-j/0-9/;
7537: $txt=~tr/K-T/0-9/;
7538: $txt=~tr/k-t/0-9/;
7539: $txt=~tr/U-Z/0-5/;
7540: $txt=~tr/u-z/0-5/;
7541: $txt=~s/\D//g;
7542: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7543: my $total;
7544: foreach my $val (@txts) { $total+=$val; }
7545: if ($_64bit) { if ($total > 2**32) { return -1; } }
7546: return int($total);
7547: }
7548:
7549: sub numval3 {
7550: use integer;
7551: my $txt=shift;
7552: $txt=~tr/A-J/0-9/;
7553: $txt=~tr/a-j/0-9/;
7554: $txt=~tr/K-T/0-9/;
7555: $txt=~tr/k-t/0-9/;
7556: $txt=~tr/U-Z/0-5/;
7557: $txt=~tr/u-z/0-5/;
7558: $txt=~s/\D//g;
7559: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7560: my $total;
7561: foreach my $val (@txts) { $total+=$val; }
7562: if ($_64bit) { $total=(($total<<32)>>32); }
7563: return $total;
7564: }
7565:
7566: sub digest {
7567: my ($data)=@_;
7568: my $digest=&Digest::MD5::md5($data);
7569: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7570: my ($e,$f);
7571: {
7572: use integer;
7573: $e=($a+$b);
7574: $f=($c+$d);
7575: if ($_64bit) {
7576: $e=(($e<<32)>>32);
7577: $f=(($f<<32)>>32);
7578: }
7579: }
7580: if (wantarray) {
7581: return ($e,$f);
7582: } else {
7583: my $g;
7584: {
7585: use integer;
7586: $g=($e+$f);
7587: if ($_64bit) {
7588: $g=(($g<<32)>>32);
7589: }
7590: }
7591: return $g;
7592: }
7593: }
7594:
7595: sub latest_rnd_algorithm_id {
7596: return '64bit5';
7597: }
7598:
7599: sub get_rand_alg {
7600: my ($courseid)=@_;
7601: if (!$courseid) { $courseid=(&whichuser())[1]; }
7602: if ($courseid) {
7603: return $env{"course.$courseid.rndseed"};
7604: }
7605: return &latest_rnd_algorithm_id();
7606: }
7607:
7608: sub validCODE {
7609: my ($CODE)=@_;
7610: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7611: return 0;
7612: }
7613:
7614: sub getCODE {
7615: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7616: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7617: defined($Apache::lonhomework::parsing_a_task) ) &&
7618: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7619: return $Apache::lonhomework::history{'resource.CODE'};
7620: }
7621: return undef;
7622: }
7623:
7624: sub rndseed {
7625: my ($symb,$courseid,$domain,$username)=@_;
7626: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7627: if (!defined($symb)) {
7628: unless ($symb=$wsymb) { return time; }
7629: }
7630: if (!$courseid) { $courseid=$wcourseid; }
7631: if (!$domain) { $domain=$wdomain; }
7632: if (!$username) { $username=$wusername }
7633: my $which=&get_rand_alg();
7634:
7635: if (defined(&getCODE())) {
7636: if ($which eq '64bit5') {
7637: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7638: } elsif ($which eq '64bit4') {
7639: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7640: } else {
7641: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7642: }
7643: } elsif ($which eq '64bit5') {
7644: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7645: } elsif ($which eq '64bit4') {
7646: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7647: } elsif ($which eq '64bit3') {
7648: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7649: } elsif ($which eq '64bit2') {
7650: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7651: } elsif ($which eq '64bit') {
7652: return &rndseed_64bit($symb,$courseid,$domain,$username);
7653: }
7654: return &rndseed_32bit($symb,$courseid,$domain,$username);
7655: }
7656:
7657: sub rndseed_32bit {
7658: my ($symb,$courseid,$domain,$username)=@_;
7659: {
7660: use integer;
7661: my $symbchck=unpack("%32C*",$symb) << 27;
7662: my $symbseed=numval($symb) << 22;
7663: my $namechck=unpack("%32C*",$username) << 17;
7664: my $nameseed=numval($username) << 12;
7665: my $domainseed=unpack("%32C*",$domain) << 7;
7666: my $courseseed=unpack("%32C*",$courseid);
7667: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7668: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7669: #&logthis("rndseed :$num:$symb");
7670: if ($_64bit) { $num=(($num<<32)>>32); }
7671: return $num;
7672: }
7673: }
7674:
7675: sub rndseed_64bit {
7676: my ($symb,$courseid,$domain,$username)=@_;
7677: {
7678: use integer;
7679: my $symbchck=unpack("%32S*",$symb) << 21;
7680: my $symbseed=numval($symb) << 10;
7681: my $namechck=unpack("%32S*",$username);
7682:
7683: my $nameseed=numval($username) << 21;
7684: my $domainseed=unpack("%32S*",$domain) << 10;
7685: my $courseseed=unpack("%32S*",$courseid);
7686:
7687: my $num1=$symbchck+$symbseed+$namechck;
7688: my $num2=$nameseed+$domainseed+$courseseed;
7689: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7690: #&logthis("rndseed :$num:$symb");
7691: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7692: return "$num1,$num2";
7693: }
7694: }
7695:
7696: sub rndseed_64bit2 {
7697: my ($symb,$courseid,$domain,$username)=@_;
7698: {
7699: use integer;
7700: # strings need to be an even # of cahracters long, it it is odd the
7701: # last characters gets thrown away
7702: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7703: my $symbseed=numval($symb) << 10;
7704: my $namechck=unpack("%32S*",$username.' ');
7705:
7706: my $nameseed=numval($username) << 21;
7707: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7708: my $courseseed=unpack("%32S*",$courseid.' ');
7709:
7710: my $num1=$symbchck+$symbseed+$namechck;
7711: my $num2=$nameseed+$domainseed+$courseseed;
7712: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7713: #&logthis("rndseed :$num:$symb");
7714: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7715: return "$num1,$num2";
7716: }
7717: }
7718:
7719: sub rndseed_64bit3 {
7720: my ($symb,$courseid,$domain,$username)=@_;
7721: {
7722: use integer;
7723: # strings need to be an even # of cahracters long, it it is odd the
7724: # last characters gets thrown away
7725: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7726: my $symbseed=numval2($symb) << 10;
7727: my $namechck=unpack("%32S*",$username.' ');
7728:
7729: my $nameseed=numval2($username) << 21;
7730: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7731: my $courseseed=unpack("%32S*",$courseid.' ');
7732:
7733: my $num1=$symbchck+$symbseed+$namechck;
7734: my $num2=$nameseed+$domainseed+$courseseed;
7735: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7736: #&logthis("rndseed :$num1:$num2:$_64bit");
7737: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7738:
7739: return "$num1:$num2";
7740: }
7741: }
7742:
7743: sub rndseed_64bit4 {
7744: my ($symb,$courseid,$domain,$username)=@_;
7745: {
7746: use integer;
7747: # strings need to be an even # of cahracters long, it it is odd the
7748: # last characters gets thrown away
7749: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7750: my $symbseed=numval3($symb) << 10;
7751: my $namechck=unpack("%32S*",$username.' ');
7752:
7753: my $nameseed=numval3($username) << 21;
7754: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7755: my $courseseed=unpack("%32S*",$courseid.' ');
7756:
7757: my $num1=$symbchck+$symbseed+$namechck;
7758: my $num2=$nameseed+$domainseed+$courseseed;
7759: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7760: #&logthis("rndseed :$num1:$num2:$_64bit");
7761: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7762:
7763: return "$num1:$num2";
7764: }
7765: }
7766:
7767: sub rndseed_64bit5 {
7768: my ($symb,$courseid,$domain,$username)=@_;
7769: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7770: return "$num1:$num2";
7771: }
7772:
7773: sub rndseed_CODE_64bit {
7774: my ($symb,$courseid,$domain,$username)=@_;
7775: {
7776: use integer;
7777: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7778: my $symbseed=numval2($symb);
7779: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7780: my $CODEseed=numval(&getCODE());
7781: my $courseseed=unpack("%32S*",$courseid.' ');
7782: my $num1=$symbseed+$CODEchck;
7783: my $num2=$CODEseed+$courseseed+$symbchck;
7784: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7785: #&logthis("rndseed :$num1:$num2:$symb");
7786: if ($_64bit) { $num1=(($num1<<32)>>32); }
7787: if ($_64bit) { $num2=(($num2<<32)>>32); }
7788: return "$num1:$num2";
7789: }
7790: }
7791:
7792: sub rndseed_CODE_64bit4 {
7793: my ($symb,$courseid,$domain,$username)=@_;
7794: {
7795: use integer;
7796: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7797: my $symbseed=numval3($symb);
7798: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7799: my $CODEseed=numval3(&getCODE());
7800: my $courseseed=unpack("%32S*",$courseid.' ');
7801: my $num1=$symbseed+$CODEchck;
7802: my $num2=$CODEseed+$courseseed+$symbchck;
7803: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7804: #&logthis("rndseed :$num1:$num2:$symb");
7805: if ($_64bit) { $num1=(($num1<<32)>>32); }
7806: if ($_64bit) { $num2=(($num2<<32)>>32); }
7807: return "$num1:$num2";
7808: }
7809: }
7810:
7811: sub rndseed_CODE_64bit5 {
7812: my ($symb,$courseid,$domain,$username)=@_;
7813: my $code = &getCODE();
7814: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7815: return "$num1:$num2";
7816: }
7817:
7818: sub setup_random_from_rndseed {
7819: my ($rndseed)=@_;
7820: if ($rndseed =~/([,:])/) {
7821: my ($num1,$num2)=split(/[,:]/,$rndseed);
7822: &Math::Random::random_set_seed(abs($num1),abs($num2));
7823: } else {
7824: &Math::Random::random_set_seed_from_phrase($rndseed);
7825: }
7826: }
7827:
7828: sub latest_receipt_algorithm_id {
7829: return 'receipt3';
7830: }
7831:
7832: sub recunique {
7833: my $fucourseid=shift;
7834: my $unique;
7835: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7836: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7837: $unique=$env{"course.$fucourseid.internal.encseed"};
7838: } else {
7839: $unique=$perlvar{'lonReceipt'};
7840: }
7841: return unpack("%32C*",$unique);
7842: }
7843:
7844: sub recprefix {
7845: my $fucourseid=shift;
7846: my $prefix;
7847: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
7848: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7849: $prefix=$env{"course.$fucourseid.internal.encpref"};
7850: } else {
7851: $prefix=$perlvar{'lonHostID'};
7852: }
7853: return unpack("%32C*",$prefix);
7854: }
7855:
7856: sub ireceipt {
7857: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
7858:
7859: my $return =&recprefix($fucourseid).'-';
7860:
7861: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
7862: $env{'request.state'} eq 'construct') {
7863: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
7864: return $return;
7865: }
7866:
7867: my $cuname=unpack("%32C*",$funame);
7868: my $cudom=unpack("%32C*",$fudom);
7869: my $cucourseid=unpack("%32C*",$fucourseid);
7870: my $cusymb=unpack("%32C*",$fusymb);
7871: my $cunique=&recunique($fucourseid);
7872: my $cpart=unpack("%32S*",$part);
7873: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
7874:
7875: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
7876:
7877: $return.= ($cunique%$cuname+
7878: $cunique%$cudom+
7879: $cusymb%$cuname+
7880: $cusymb%$cudom+
7881: $cucourseid%$cuname+
7882: $cucourseid%$cudom+
7883: $cpart%$cuname+
7884: $cpart%$cudom);
7885: } else {
7886: $return.= ($cunique%$cuname+
7887: $cunique%$cudom+
7888: $cusymb%$cuname+
7889: $cusymb%$cudom+
7890: $cucourseid%$cuname+
7891: $cucourseid%$cudom);
7892: }
7893: return $return;
7894: }
7895:
7896: sub receipt {
7897: my ($part)=@_;
7898: my ($symb,$courseid,$domain,$name) = &whichuser();
7899: return &ireceipt($name,$domain,$courseid,$symb,$part);
7900: }
7901:
7902: sub whichuser {
7903: my ($passedsymb)=@_;
7904: my ($symb,$courseid,$domain,$name,$publicuser);
7905: if (defined($env{'form.grade_symb'})) {
7906: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
7907: my $allowed=&allowed('vgr',$tmp_courseid);
7908: if (!$allowed &&
7909: exists($env{'request.course.sec'}) &&
7910: $env{'request.course.sec'} !~ /^\s*$/) {
7911: $allowed=&allowed('vgr',$tmp_courseid.
7912: '/'.$env{'request.course.sec'});
7913: }
7914: if ($allowed) {
7915: ($symb)=&get_env_multiple('form.grade_symb');
7916: $courseid=$tmp_courseid;
7917: ($domain)=&get_env_multiple('form.grade_domain');
7918: ($name)=&get_env_multiple('form.grade_username');
7919: return ($symb,$courseid,$domain,$name,$publicuser);
7920: }
7921: }
7922: if (!$passedsymb) {
7923: $symb=&symbread();
7924: } else {
7925: $symb=$passedsymb;
7926: }
7927: $courseid=$env{'request.course.id'};
7928: $domain=$env{'user.domain'};
7929: $name=$env{'user.name'};
7930: if ($name eq 'public' && $domain eq 'public') {
7931: if (!defined($env{'form.username'})) {
7932: $env{'form.username'}.=time.rand(10000000);
7933: }
7934: $name.=$env{'form.username'};
7935: }
7936: return ($symb,$courseid,$domain,$name,$publicuser);
7937:
7938: }
7939:
7940: # ------------------------------------------------------------ Serves up a file
7941: # returns either the contents of the file or
7942: # -1 if the file doesn't exist
7943: #
7944: # if the target is a file that was uploaded via DOCS,
7945: # a check will be made to see if a current copy exists on the local server,
7946: # if it does this will be served, otherwise a copy will be retrieved from
7947: # the home server for the course and stored in /home/httpd/html/userfiles on
7948: # the local server.
7949:
7950: sub getfile {
7951: my ($file) = @_;
7952: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7953: &repcopy($file);
7954: return &readfile($file);
7955: }
7956:
7957: sub repcopy_userfile {
7958: my ($file)=@_;
7959: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7960: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
7961: my ($cdom,$cnum,$filename) =
7962: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
7963: my $uri="/uploaded/$cdom/$cnum/$filename";
7964: if (-e "$file") {
7965: # we already have a local copy, check it out
7966: my @fileinfo = stat($file);
7967: my $rtncode;
7968: my $info;
7969: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
7970: if ($lwpresp ne 'ok') {
7971: # there is no such file anymore, even though we had a local copy
7972: if ($rtncode eq '404') {
7973: unlink($file);
7974: }
7975: return -1;
7976: }
7977: if ($info < $fileinfo[9]) {
7978: # nice, the file we have is up-to-date, just say okay
7979: return 'ok';
7980: } else {
7981: # the file is outdated, get rid of it
7982: unlink($file);
7983: }
7984: }
7985: # one way or the other, at this point, we don't have the file
7986: # construct the correct path for the file
7987: my @parts = ($cdom,$cnum);
7988: if ($filename =~ m|^(.+)/[^/]+$|) {
7989: push @parts, split(/\//,$1);
7990: }
7991: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
7992: foreach my $part (@parts) {
7993: $path .= '/'.$part;
7994: if (!-e $path) {
7995: mkdir($path,0770);
7996: }
7997: }
7998: # now the path exists for sure
7999: # get a user agent
8000: my $ua=new LWP::UserAgent;
8001: my $transferfile=$file.'.in.transfer';
8002: # FIXME: this should flock
8003: if (-e $transferfile) { return 'ok'; }
8004: my $request;
8005: $uri=~s/^\///;
8006: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
8007: my $response=$ua->request($request,$transferfile);
8008: # did it work?
8009: if ($response->is_error()) {
8010: unlink($transferfile);
8011: &logthis("Userfile repcopy failed for $uri");
8012: return -1;
8013: }
8014: # worked, rename the transfer file
8015: rename($transferfile,$file);
8016: return 'ok';
8017: }
8018:
8019: sub tokenwrapper {
8020: my $uri=shift;
8021: $uri=~s|^http\://([^/]+)||;
8022: $uri=~s|^/||;
8023: $env{'user.environment'}=~/\/([^\/]+)\.id/;
8024: my $token=$1;
8025: my (undef,$udom,$uname,$file)=split('/',$uri,4);
8026: if ($udom && $uname && $file) {
8027: $file=~s|(\?\.*)*$||;
8028: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
8029: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
8030: (($uri=~/\?/)?'&':'?').'token='.$token.
8031: '&tokenissued='.$perlvar{'lonHostID'};
8032: } else {
8033: return '/adm/notfound.html';
8034: }
8035: }
8036:
8037: # call with reqtype HEAD: get last modification time
8038: # call with reqtype GET: get the file contents
8039: # Do not call this with reqtype GET for large files! It loads everything into memory
8040: #
8041: sub getuploaded {
8042: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8043: $uri=~s/^\///;
8044: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
8045: my $ua=new LWP::UserAgent;
8046: my $request=new HTTP::Request($reqtype,$uri);
8047: my $response=$ua->request($request);
8048: $$rtncode = $response->code;
8049: if (! $response->is_success()) {
8050: return 'failed';
8051: }
8052: if ($reqtype eq 'HEAD') {
8053: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8054: } elsif ($reqtype eq 'GET') {
8055: $$info = $response->content;
8056: }
8057: return 'ok';
8058: }
8059:
8060: sub readfile {
8061: my $file = shift;
8062: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8063: my $fh;
8064: open($fh,"<$file");
8065: my $a='';
8066: while (my $line = <$fh>) { $a .= $line; }
8067: return $a;
8068: }
8069:
8070: sub filelocation {
8071: my ($dir,$file) = @_;
8072: my $location;
8073: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8074:
8075: if ($file =~ m-^/adm/-) {
8076: $file=~s-^/adm/wrapper/-/-;
8077: $file=~s-^/adm/coursedocs/showdoc/-/-;
8078: }
8079:
8080: if ($file=~m:^/~:) { # is a contruction space reference
8081: $location = $file;
8082: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8083: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8084: # is a correct contruction space reference
8085: $location = $file;
8086: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8087: my ($udom,$uname,$filename)=
8088: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8089: my $home=&homeserver($uname,$udom);
8090: my $is_me=0;
8091: my @ids=¤t_machine_ids();
8092: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8093: if ($is_me) {
8094: $location=&propath($udom,$uname).
8095: '/userfiles/'.$filename;
8096: } else {
8097: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8098: $udom.'/'.$uname.'/'.$filename;
8099: }
8100: } elsif ($file =~ m-^/adm/-) {
8101: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8102: } else {
8103: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8104: $file=~s:^/res/:/:;
8105: if ( !( $file =~ m:^/:) ) {
8106: $location = $dir. '/'.$file;
8107: } else {
8108: $location = '/home/httpd/html/res'.$file;
8109: }
8110: }
8111: $location=~s://+:/:g; # remove duplicate /
8112: while ($location=~m{/\.\./}) {
8113: if ($location =~ m{/[^/]+/\.\./}) {
8114: $location=~ s{/[^/]+/\.\./}{/}g;
8115: } else {
8116: $location=~ s{/\.\./}{/}g;
8117: }
8118: } #remove dir/..
8119: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8120: return $location;
8121: }
8122:
8123: sub hreflocation {
8124: my ($dir,$file)=@_;
8125: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
8126: $file=filelocation($dir,$file);
8127: } elsif ($file=~m-^/adm/-) {
8128: $file=~s-^/adm/wrapper/-/-;
8129: $file=~s-^/adm/coursedocs/showdoc/-/-;
8130: }
8131: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8132: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8133: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8134: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8135: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8136: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8137: -/uploaded/$1/$2/-x;
8138: }
8139: if ($file=~ m{^/userfiles/}) {
8140: $file =~ s{^/userfiles/}{/uploaded/};
8141: }
8142: return $file;
8143: }
8144:
8145: sub current_machine_domains {
8146: return &machine_domains(&hostname($perlvar{'lonHostID'}));
8147: }
8148:
8149: sub machine_domains {
8150: my ($hostname) = @_;
8151: my @domains;
8152: my %hostname = &all_hostnames();
8153: while( my($id, $name) = each(%hostname)) {
8154: # &logthis("-$id-$name-$hostname-");
8155: if ($hostname eq $name) {
8156: push(@domains,&host_domain($id));
8157: }
8158: }
8159: return @domains;
8160: }
8161:
8162: sub current_machine_ids {
8163: return &machine_ids(&hostname($perlvar{'lonHostID'}));
8164: }
8165:
8166: sub machine_ids {
8167: my ($hostname) = @_;
8168: $hostname ||= &hostname($perlvar{'lonHostID'});
8169: my @ids;
8170: my %name_to_host = &all_names();
8171: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
8172: return @{ $name_to_host{$hostname} };
8173: }
8174: return;
8175: }
8176:
8177: sub additional_machine_domains {
8178: my @domains;
8179: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
8180: while( my $line = <$fh>) {
8181: $line =~ s/\s//g;
8182: push(@domains,$line);
8183: }
8184: return @domains;
8185: }
8186:
8187: sub default_login_domain {
8188: my $domain = $perlvar{'lonDefDomain'};
8189: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
8190: foreach my $posdom (¤t_machine_domains(),
8191: &additional_machine_domains()) {
8192: if (lc($posdom) eq lc($testdomain)) {
8193: $domain=$posdom;
8194: last;
8195: }
8196: }
8197: return $domain;
8198: }
8199:
8200: # ------------------------------------------------------------- Declutters URLs
8201:
8202: sub declutter {
8203: my $thisfn=shift;
8204: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8205: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8206: $thisfn=~s/^\///;
8207: $thisfn=~s|^adm/wrapper/||;
8208: $thisfn=~s|^adm/coursedocs/showdoc/||;
8209: $thisfn=~s/^res\///;
8210: $thisfn=~s/\?.+$//;
8211: return $thisfn;
8212: }
8213:
8214: # ------------------------------------------------------------- Clutter up URLs
8215:
8216: sub clutter {
8217: my $thisfn='/'.&declutter(shift);
8218: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
8219: || $thisfn =~ m{^/adm/(includes|pages)} ) {
8220: $thisfn='/res'.$thisfn;
8221: }
8222: if ($thisfn !~m|/adm|) {
8223: if ($thisfn =~ m|/ext/|) {
8224: $thisfn='/adm/wrapper'.$thisfn;
8225: } else {
8226: my ($ext) = ($thisfn =~ /\.(\w+)$/);
8227: my $embstyle=&Apache::loncommon::fileembstyle($ext);
8228: if ($embstyle eq 'ssi'
8229: || ($embstyle eq 'hdn')
8230: || ($embstyle eq 'rat')
8231: || ($embstyle eq 'prv')
8232: || ($embstyle eq 'ign')) {
8233: #do nothing with these
8234: } elsif (($embstyle eq 'img')
8235: || ($embstyle eq 'emb')
8236: || ($embstyle eq 'wrp')) {
8237: $thisfn='/adm/wrapper'.$thisfn;
8238: } elsif ($embstyle eq 'unk'
8239: && $thisfn!~/\.(sequence|page)$/) {
8240: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
8241: } else {
8242: # &logthis("Got a blank emb style");
8243: }
8244: }
8245: }
8246: return $thisfn;
8247: }
8248:
8249: sub clutter_with_no_wrapper {
8250: my $uri = &clutter(shift);
8251: if ($uri =~ m-^/adm/-) {
8252: $uri =~ s-^/adm/wrapper/-/-;
8253: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
8254: }
8255: return $uri;
8256: }
8257:
8258: sub freeze_escape {
8259: my ($value)=@_;
8260: if (ref($value)) {
8261: $value=&nfreeze($value);
8262: return '__FROZEN__'.&escape($value);
8263: }
8264: return &escape($value);
8265: }
8266:
8267:
8268: sub thaw_unescape {
8269: my ($value)=@_;
8270: if ($value =~ /^__FROZEN__/) {
8271: substr($value,0,10,undef);
8272: $value=&unescape($value);
8273: return &thaw($value);
8274: }
8275: return &unescape($value);
8276: }
8277:
8278: sub correct_line_ends {
8279: my ($result)=@_;
8280: $$result =~s/\r\n/\n/mg;
8281: $$result =~s/\r/\n/mg;
8282: }
8283: # ================================================================ Main Program
8284:
8285: sub goodbye {
8286: &logthis("Starting Shut down");
8287: #not converted to using infrastruture and probably shouldn't be
8288: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
8289: #converted
8290: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
8291: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
8292: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
8293: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
8294: #1.1 only
8295: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
8296: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
8297: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
8298: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
8299: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
8300: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
8301: &logthis(sprintf("%-20s is %s",'hits',$hits));
8302: &flushcourselogs();
8303: &logthis("Shutting down");
8304: }
8305:
8306: sub get_dns {
8307: my ($url,$func,$ignore_cache) = @_;
8308: if (!$ignore_cache) {
8309: my ($content,$cached)=
8310: &Apache::lonnet::is_cached_new('dns',$url);
8311: if ($cached) {
8312: &$func($content);
8313: return;
8314: }
8315: }
8316:
8317: my %alldns;
8318: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8319: foreach my $dns (<$config>) {
8320: next if ($dns !~ /^\^(\S*)/x);
8321: $alldns{$1} = 1;
8322: }
8323: while (%alldns) {
8324: my ($dns) = keys(%alldns);
8325: delete($alldns{$dns});
8326: my $ua=new LWP::UserAgent;
8327: my $request=new HTTP::Request('GET',"http://$dns$url");
8328: my $response=$ua->request($request);
8329: next if ($response->is_error());
8330: my @content = split("\n",$response->content);
8331: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
8332: &$func(\@content);
8333: return;
8334: }
8335: close($config);
8336: my $which = (split('/',$url))[3];
8337: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
8338: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
8339: my @content = <$config>;
8340: &$func(\@content);
8341: return;
8342: }
8343: # ------------------------------------------------------------ Read domain file
8344: {
8345: my $loaded;
8346: my %domain;
8347:
8348: sub parse_domain_tab {
8349: my ($lines) = @_;
8350: foreach my $line (@$lines) {
8351: next if ($line =~ /^(\#|\s*$ )/x);
8352:
8353: chomp($line);
8354: my ($name,@elements) = split(/:/,$line,9);
8355: my %this_domain;
8356: foreach my $field ('description', 'auth_def', 'auth_arg_def',
8357: 'lang_def', 'city', 'longi', 'lati',
8358: 'primary') {
8359: $this_domain{$field} = shift(@elements);
8360: }
8361: $domain{$name} = \%this_domain;
8362: }
8363: }
8364:
8365: sub reset_domain_info {
8366: undef($loaded);
8367: undef(%domain);
8368: }
8369:
8370: sub load_domain_tab {
8371: my ($ignore_cache) = @_;
8372: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
8373: my $fh;
8374: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
8375: my @lines = <$fh>;
8376: &parse_domain_tab(\@lines);
8377: }
8378: close($fh);
8379: $loaded = 1;
8380: }
8381:
8382: sub domain {
8383: &load_domain_tab() if (!$loaded);
8384:
8385: my ($name,$what) = @_;
8386: return if ( !exists($domain{$name}) );
8387:
8388: if (!$what) {
8389: return $domain{$name}{'description'};
8390: }
8391: return $domain{$name}{$what};
8392: }
8393: }
8394:
8395:
8396: # ------------------------------------------------------------- Read hosts file
8397: {
8398: my %hostname;
8399: my %hostdom;
8400: my %libserv;
8401: my $loaded;
8402: my %name_to_host;
8403:
8404: sub parse_hosts_tab {
8405: my ($file) = @_;
8406: foreach my $configline (@$file) {
8407: next if ($configline =~ /^(\#|\s*$ )/x);
8408: next if ($configline =~ /^\^/);
8409: chomp($configline);
8410: my ($id,$domain,$role,$name)=split(/:/,$configline);
8411: $name=~s/\s//g;
8412: if ($id && $domain && $role && $name) {
8413: $hostname{$id}=$name;
8414: push(@{$name_to_host{$name}}, $id);
8415: $hostdom{$id}=$domain;
8416: if ($role eq 'library') { $libserv{$id}=$name; }
8417: }
8418: }
8419: }
8420:
8421: sub reset_hosts_info {
8422: &purge_remembered();
8423: &reset_domain_info();
8424: &reset_hosts_ip_info();
8425: undef(%name_to_host);
8426: undef(%hostname);
8427: undef(%hostdom);
8428: undef(%libserv);
8429: undef($loaded);
8430: }
8431:
8432: sub load_hosts_tab {
8433: my ($ignore_cache) = @_;
8434: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
8435: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8436: my @config = <$config>;
8437: &parse_hosts_tab(\@config);
8438: close($config);
8439: $loaded=1;
8440: }
8441:
8442: sub hostname {
8443: &load_hosts_tab() if (!$loaded);
8444:
8445: my ($lonid) = @_;
8446: return $hostname{$lonid};
8447: }
8448:
8449: sub all_hostnames {
8450: &load_hosts_tab() if (!$loaded);
8451:
8452: return %hostname;
8453: }
8454:
8455: sub all_names {
8456: &load_hosts_tab() if (!$loaded);
8457:
8458: return %name_to_host;
8459: }
8460:
8461: sub is_library {
8462: &load_hosts_tab() if (!$loaded);
8463:
8464: return exists($libserv{$_[0]});
8465: }
8466:
8467: sub all_library {
8468: &load_hosts_tab() if (!$loaded);
8469:
8470: return %libserv;
8471: }
8472:
8473: sub get_servers {
8474: &load_hosts_tab() if (!$loaded);
8475:
8476: my ($domain,$type) = @_;
8477: my %possible_hosts = ($type eq 'library') ? %libserv
8478: : %hostname;
8479: my %result;
8480: if (ref($domain) eq 'ARRAY') {
8481: while ( my ($host,$hostname) = each(%possible_hosts)) {
8482: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
8483: $result{$host} = $hostname;
8484: }
8485: }
8486: } else {
8487: while ( my ($host,$hostname) = each(%possible_hosts)) {
8488: if ($hostdom{$host} eq $domain) {
8489: $result{$host} = $hostname;
8490: }
8491: }
8492: }
8493: return %result;
8494: }
8495:
8496: sub host_domain {
8497: &load_hosts_tab() if (!$loaded);
8498:
8499: my ($lonid) = @_;
8500: return $hostdom{$lonid};
8501: }
8502:
8503: sub all_domains {
8504: &load_hosts_tab() if (!$loaded);
8505:
8506: my %seen;
8507: my @uniq = grep(!$seen{$_}++, values(%hostdom));
8508: return @uniq;
8509: }
8510: }
8511:
8512: {
8513: my %iphost;
8514: my %name_to_ip;
8515: my %lonid_to_ip;
8516:
8517: sub get_hosts_from_ip {
8518: my ($ip) = @_;
8519: my %iphosts = &get_iphost();
8520: if (ref($iphosts{$ip})) {
8521: return @{$iphosts{$ip}};
8522: }
8523: return;
8524: }
8525:
8526: sub reset_hosts_ip_info {
8527: undef(%iphost);
8528: undef(%name_to_ip);
8529: undef(%lonid_to_ip);
8530: }
8531:
8532: sub get_host_ip {
8533: my ($lonid) = @_;
8534: if (exists($lonid_to_ip{$lonid})) {
8535: return $lonid_to_ip{$lonid};
8536: }
8537: my $name=&hostname($lonid);
8538: my $ip = gethostbyname($name);
8539: return if (!$ip || length($ip) ne 4);
8540: $ip=inet_ntoa($ip);
8541: $name_to_ip{$name} = $ip;
8542: $lonid_to_ip{$lonid} = $ip;
8543: return $ip;
8544: }
8545:
8546: sub get_iphost {
8547: my ($ignore_cache) = @_;
8548:
8549: if (!$ignore_cache) {
8550: if (%iphost) {
8551: return %iphost;
8552: }
8553: my ($ip_info,$cached)=
8554: &Apache::lonnet::is_cached_new('iphost','iphost');
8555: if ($cached) {
8556: %iphost = %{$ip_info->[0]};
8557: %name_to_ip = %{$ip_info->[1]};
8558: %lonid_to_ip = %{$ip_info->[2]};
8559: return %iphost;
8560: }
8561: }
8562:
8563: # get yesterday's info for fallback
8564: my %old_name_to_ip;
8565: my ($ip_info,$cached)=
8566: &Apache::lonnet::is_cached_new('iphost','iphost');
8567: if ($cached) {
8568: %old_name_to_ip = %{$ip_info->[1]};
8569: }
8570:
8571: my %name_to_host = &all_names();
8572: foreach my $name (keys(%name_to_host)) {
8573: my $ip;
8574: if (!exists($name_to_ip{$name})) {
8575: $ip = gethostbyname($name);
8576: if (!$ip || length($ip) ne 4) {
8577: if (defined($old_name_to_ip{$name})) {
8578: $ip = $old_name_to_ip{$name};
8579: &logthis("Can't find $name defaulting to old $ip");
8580: } else {
8581: &logthis("Name $name no IP found");
8582: next;
8583: }
8584: } else {
8585: $ip=inet_ntoa($ip);
8586: }
8587: $name_to_ip{$name} = $ip;
8588: } else {
8589: $ip = $name_to_ip{$name};
8590: }
8591: foreach my $id (@{ $name_to_host{$name} }) {
8592: $lonid_to_ip{$id} = $ip;
8593: }
8594: push(@{$iphost{$ip}},@{$name_to_host{$name}});
8595: }
8596: &Apache::lonnet::do_cache_new('iphost','iphost',
8597: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8598: 48*60*60);
8599:
8600: return %iphost;
8601: }
8602: }
8603:
8604: BEGIN {
8605:
8606: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8607: unless ($readit) {
8608: {
8609: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8610: %perlvar = (%perlvar,%{$configvars});
8611: }
8612:
8613:
8614: # ------------------------------------------------------ Read spare server file
8615: {
8616: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8617:
8618: while (my $configline=<$config>) {
8619: chomp($configline);
8620: if ($configline) {
8621: my ($host,$type) = split(':',$configline,2);
8622: if (!defined($type) || $type eq '') { $type = 'default' };
8623: push(@{ $spareid{$type} }, $host);
8624: }
8625: }
8626: close($config);
8627: }
8628: # ------------------------------------------------------------ Read permissions
8629: {
8630: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8631:
8632: while (my $configline=<$config>) {
8633: chomp($configline);
8634: if ($configline) {
8635: my ($role,$perm)=split(/ /,$configline);
8636: if ($perm ne '') { $pr{$role}=$perm; }
8637: }
8638: }
8639: close($config);
8640: }
8641:
8642: # -------------------------------------------- Read plain texts for permissions
8643: {
8644: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8645:
8646: while (my $configline=<$config>) {
8647: chomp($configline);
8648: if ($configline) {
8649: my ($short,@plain)=split(/:/,$configline);
8650: %{$prp{$short}} = ();
8651: if (@plain > 0) {
8652: $prp{$short}{'std'} = $plain[0];
8653: for (my $i=1; $i<@plain; $i++) {
8654: $prp{$short}{'alt'.$i} = $plain[$i];
8655: }
8656: }
8657: }
8658: }
8659: close($config);
8660: }
8661:
8662: # ---------------------------------------------------------- Read package table
8663: {
8664: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8665:
8666: while (my $configline=<$config>) {
8667: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8668: chomp($configline);
8669: my ($short,$plain)=split(/:/,$configline);
8670: my ($pack,$name)=split(/\&/,$short);
8671: if ($plain ne '') {
8672: $packagetab{$pack.'&'.$name.'&name'}=$name;
8673: $packagetab{$short}=$plain;
8674: }
8675: }
8676: close($config);
8677: }
8678:
8679: # ------------- set up temporary directory
8680: {
8681: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8682:
8683: }
8684:
8685: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8686: 'compress_threshold'=> 20_000,
8687: });
8688:
8689: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8690: $dumpcount=0;
8691:
8692: &logtouch();
8693: &logthis('<font color="yellow">INFO: Read configuration</font>');
8694: $readit=1;
8695: {
8696: use integer;
8697: my $test=(2**32)+1;
8698: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8699: &logthis(" Detected 64bit platform ($_64bit)");
8700: }
8701: }
8702: }
8703:
8704: 1;
8705: __END__
8706:
8707: =pod
8708:
8709: =head1 NAME
8710:
8711: Apache::lonnet - Subroutines to ask questions about things in the network.
8712:
8713: =head1 SYNOPSIS
8714:
8715: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8716:
8717: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8718:
8719: Common parameters:
8720:
8721: =over 4
8722:
8723: =item *
8724:
8725: $uname : an internal username (if $cname expecting a course Id specifically)
8726:
8727: =item *
8728:
8729: $udom : a domain (if $cdom expecting a course's domain specifically)
8730:
8731: =item *
8732:
8733: $symb : a resource instance identifier
8734:
8735: =item *
8736:
8737: $namespace : the name of a .db file that contains the data needed or
8738: being set.
8739:
8740: =back
8741:
8742: =head1 OVERVIEW
8743:
8744: lonnet provides subroutines which interact with the
8745: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8746: about classes, users, and resources.
8747:
8748: For many of these objects you can also use this to store data about
8749: them or modify them in various ways.
8750:
8751: =head2 Symbs
8752:
8753: To identify a specific instance of a resource, LON-CAPA uses symbols
8754: or "symbs"X<symb>. These identifiers are built from the URL of the
8755: map, the resource number of the resource in the map, and the URL of
8756: the resource itself. The latter is somewhat redundant, but might help
8757: if maps change.
8758:
8759: An example is
8760:
8761: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8762:
8763: The respective map entry is
8764:
8765: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8766: title="Problem 2">
8767: </resource>
8768:
8769: Symbs are used by the random number generator, as well as to store and
8770: restore data specific to a certain instance of for example a problem.
8771:
8772: =head2 Storing And Retrieving Data
8773:
8774: X<store()>X<cstore()>X<restore()>Three of the most important functions
8775: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8776: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8777: is is the non-critical message twin of cstore. These functions are for
8778: handlers to store a perl hash to a user's permanent data space in an
8779: easy manner, and to retrieve it again on another call. It is expected
8780: that a handler would use this once at the beginning to retrieve data,
8781: and then again once at the end to send only the new data back.
8782:
8783: The data is stored in the user's data directory on the user's
8784: homeserver under the ID of the course.
8785:
8786: The hash that is returned by restore will have all of the previous
8787: value for all of the elements of the hash.
8788:
8789: Example:
8790:
8791: #creating a hash
8792: my %hash;
8793: $hash{'foo'}='bar';
8794:
8795: #storing it
8796: &Apache::lonnet::cstore(\%hash);
8797:
8798: #changing a value
8799: $hash{'foo'}='notbar';
8800:
8801: #adding a new value
8802: $hash{'bar'}='foo';
8803: &Apache::lonnet::cstore(\%hash);
8804:
8805: #retrieving the hash
8806: my %history=&Apache::lonnet::restore();
8807:
8808: #print the hash
8809: foreach my $key (sort(keys(%history))) {
8810: print("\%history{$key} = $history{$key}");
8811: }
8812:
8813: Will print out:
8814:
8815: %history{1:foo} = bar
8816: %history{1:keys} = foo:timestamp
8817: %history{1:timestamp} = 990455579
8818: %history{2:bar} = foo
8819: %history{2:foo} = notbar
8820: %history{2:keys} = foo:bar:timestamp
8821: %history{2:timestamp} = 990455580
8822: %history{bar} = foo
8823: %history{foo} = notbar
8824: %history{timestamp} = 990455580
8825: %history{version} = 2
8826:
8827: Note that the special hash entries C<keys>, C<version> and
8828: C<timestamp> were added to the hash. C<version> will be equal to the
8829: total number of versions of the data that have been stored. The
8830: C<timestamp> attribute will be the UNIX time the hash was
8831: stored. C<keys> is available in every historical section to list which
8832: keys were added or changed at a specific historical revision of a
8833: hash.
8834:
8835: B<Warning>: do not store the hash that restore returns directly. This
8836: will cause a mess since it will restore the historical keys as if the
8837: were new keys. I.E. 1:foo will become 1:1:foo etc.
8838:
8839: Calling convention:
8840:
8841: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
8842: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
8843:
8844: For more detailed information, see lonnet specific documentation.
8845:
8846: =head1 RETURN MESSAGES
8847:
8848: =over 4
8849:
8850: =item * B<con_lost>: unable to contact remote host
8851:
8852: =item * B<con_delayed>: unable to contact remote host, message will be delivered
8853: when the connection is brought back up
8854:
8855: =item * B<con_failed>: unable to contact remote host and unable to save message
8856: for later delivery
8857:
8858: =item * B<error:>: an error a occured, a description of the error follows the :
8859:
8860: =item * B<no_such_host>: unable to fund a host associated with the user/domain
8861: that was requested
8862:
8863: =back
8864:
8865: =head1 PUBLIC SUBROUTINES
8866:
8867: =head2 Session Environment Functions
8868:
8869: =over 4
8870:
8871: =item *
8872: X<appenv()>
8873: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
8874: the user envirnoment file, and will be restored for each access this
8875: user makes during this session, also modifies the %env for the current
8876: process. Optional rolesarrayref - if defined contains a reference to an array
8877: of roles which are exempt from the restriction on modifying user.role entries
8878: in the user's environment.db and in %env.
8879:
8880: =item *
8881: X<delenv()>
8882: B<delenv($regexp)>: removes all items from the session
8883: environment file that matches the regular expression in $regexp. The
8884: values are also delted from the current processes %env.
8885:
8886: =item * get_env_multiple($name)
8887:
8888: gets $name from the %env hash, it seemlessly handles the cases where multiple
8889: values may be defined and end up as an array ref.
8890:
8891: returns an array of values
8892:
8893: =back
8894:
8895: =head2 User Information
8896:
8897: =over 4
8898:
8899: =item *
8900: X<queryauthenticate()>
8901: B<queryauthenticate($uname,$udom)>: try to determine user's current
8902: authentication scheme
8903:
8904: =item *
8905: X<authenticate()>
8906: B<authenticate($uname,$upass,$udom)>: try to
8907: authenticate user from domain's lib servers (first use the current
8908: one). C<$upass> should be the users password.
8909:
8910: =item *
8911: X<homeserver()>
8912: B<homeserver($uname,$udom)>: find the server which has
8913: the user's directory and files (there must be only one), this caches
8914: the answer, and also caches if there is a borken connection.
8915:
8916: =item *
8917: X<idget()>
8918: B<idget($udom,@ids)>: find the usernames behind a list of IDs
8919: (IDs are a unique resource in a domain, there must be only 1 ID per
8920: username, and only 1 username per ID in a specific domain) (returns
8921: hash: id=>name,id=>name)
8922:
8923: =item *
8924: X<idrget()>
8925: B<idrget($udom,@unames)>: find the IDs behind a list of
8926: usernames (returns hash: name=>id,name=>id)
8927:
8928: =item *
8929: X<idput()>
8930: B<idput($udom,%ids)>: store away a list of names and associated IDs
8931:
8932: =item *
8933: X<rolesinit()>
8934: B<rolesinit($udom,$username,$authhost)>: get user privileges
8935:
8936: =item *
8937: X<getsection()>
8938: B<getsection($udom,$uname,$cname)>: finds the section of student in the
8939: course $cname, return section name/number or '' for "not in course"
8940: and '-1' for "no section"
8941:
8942: =item *
8943: X<userenvironment()>
8944: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
8945: passed in @what from the requested user's environment, returns a hash
8946:
8947: =item *
8948: X<userlog_query()>
8949: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
8950: activity.log file. %filters defines filters applied when parsing the
8951: log file. These can be start or end timestamps, or the type of action
8952: - log to look for Login or Logout events, check for Checkin or
8953: Checkout, role for role selection. The response is in the form
8954: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
8955: escaped strings of the action recorded in the activity.log file.
8956:
8957: =back
8958:
8959: =head2 User Roles
8960:
8961: =over 4
8962:
8963: =item *
8964:
8965: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
8966: F: full access
8967: U,I,K: authentication modes (cxx only)
8968: '': forbidden
8969: 1: user needs to choose course
8970: 2: browse allowed
8971: A: passphrase authentication needed
8972:
8973: =item *
8974:
8975: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
8976: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
8977: and course level
8978:
8979: =item *
8980:
8981: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
8982: explanation of a user role term
8983:
8984: =item *
8985:
8986: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
8987: All arguments are optional. Returns a hash of a roles, either for
8988: co-author/assistant author roles for a user's Construction Space
8989: (default), or if $context is 'userroles', roles for the user himself,
8990: In the hash, keys are set to colon-separated $uname,$udom,$role, and
8991: (optionally) if $withsec is true, a fourth colon-separated item - $section.
8992: For each key, value is set to colon-separated start and end times for
8993: the role. If no username and domain are specified, will default to
8994: current user/domain. Types, roles, and roledoms are references to arrays
8995: of role statuses (active, future or previous), roles
8996: (e.g., cc,in, st etc.) and domains of the roles which can be used
8997: to restrict the list of roles reported. If no array ref is
8998: provided for types, will default to return only active roles.
8999:
9000: =back
9001:
9002: =head2 User Modification
9003:
9004: =over 4
9005:
9006: =item *
9007:
9008: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
9009: user for the level given by URL. Optional start and end dates (leave empty
9010: string or zero for "no date")
9011:
9012: =item *
9013:
9014: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
9015: change a users, password, possible return values are: ok,
9016: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
9017: refused
9018:
9019: =item *
9020:
9021: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
9022:
9023: =item *
9024:
9025: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
9026: modify user
9027:
9028: =item *
9029:
9030: modifystudent
9031:
9032: modify a students enrollment and identification information.
9033: The course id is resolved based on the current users environment.
9034: This means the envoking user must be a course coordinator or otherwise
9035: associated with a course.
9036:
9037: This call is essentially a wrapper for lonnet::modifyuser and
9038: lonnet::modify_student_enrollment
9039:
9040: Inputs:
9041:
9042: =over 4
9043:
9044: =item B<$udom> Students loncapa domain
9045:
9046: =item B<$uname> Students loncapa login name
9047:
9048: =item B<$uid> Students id/student number
9049:
9050: =item B<$umode> Students authentication mode
9051:
9052: =item B<$upass> Students password
9053:
9054: =item B<$first> Students first name
9055:
9056: =item B<$middle> Students middle name
9057:
9058: =item B<$last> Students last name
9059:
9060: =item B<$gene> Students generation
9061:
9062: =item B<$usec> Students section in course
9063:
9064: =item B<$end> Unix time of the roles expiration
9065:
9066: =item B<$start> Unix time of the roles start date
9067:
9068: =item B<$forceid> If defined, allow $uid to be changed
9069:
9070: =item B<$desiredhome> server to use as home server for student
9071:
9072: =back
9073:
9074: =item *
9075:
9076: modify_student_enrollment
9077:
9078: Change a students enrollment status in a class. The environment variable
9079: 'role.request.course' must be defined for this function to proceed.
9080:
9081: Inputs:
9082:
9083: =over 4
9084:
9085: =item $udom, students domain
9086:
9087: =item $uname, students name
9088:
9089: =item $uid, students user id
9090:
9091: =item $first, students first name
9092:
9093: =item $middle
9094:
9095: =item $last
9096:
9097: =item $gene
9098:
9099: =item $usec
9100:
9101: =item $end
9102:
9103: =item $start
9104:
9105: =back
9106:
9107:
9108: =item *
9109:
9110: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
9111: custom role; give a custom role to a user for the level given by URL. Specify
9112: name and domain of role author, and role name
9113:
9114: =item *
9115:
9116: revokerole($udom,$uname,$url,$role) : revoke a role for url
9117:
9118: =item *
9119:
9120: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
9121:
9122: =back
9123:
9124: =head2 Course Infomation
9125:
9126: =over 4
9127:
9128: =item *
9129:
9130: coursedescription($courseid) : returns a hash of information about the
9131: specified course id, including all environment settings for the
9132: course, the description of the course will be in the hash under the
9133: key 'description'
9134:
9135: =item *
9136:
9137: resdata($name,$domain,$type,@which) : request for current parameter
9138: setting for a specific $type, where $type is either 'course' or 'user',
9139: @what should be a list of parameters to ask about. This routine caches
9140: answers for 5 minutes.
9141:
9142: =item *
9143:
9144: get_courseresdata($courseid, $domain) : dump the entire course resource
9145: data base, returning a hash that is keyed by the resource name and has
9146: values that are the resource value. I believe that the timestamps and
9147: versions are also returned.
9148:
9149:
9150: =back
9151:
9152: =head2 Course Modification
9153:
9154: =over 4
9155:
9156: =item *
9157:
9158: writecoursepref($courseid,%prefs) : write preferences (environment
9159: database) for a course
9160:
9161: =item *
9162:
9163: createcourse($udom,$description,$url) : make/modify course
9164:
9165: =back
9166:
9167: =head2 Resource Subroutines
9168:
9169: =over 4
9170:
9171: =item *
9172:
9173: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
9174:
9175: =item *
9176:
9177: repcopy($filename) : subscribes to the requested file, and attempts to
9178: replicate from the owning library server, Might return
9179: 'unavailable', 'not_found', 'forbidden', 'ok', or
9180: 'bad_request', also attempts to grab the metadata for the
9181: resource. Expects the local filesystem pathname
9182: (/home/httpd/html/res/....)
9183:
9184: =back
9185:
9186: =head2 Resource Information
9187:
9188: =over 4
9189:
9190: =item *
9191:
9192: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
9193: a vairety of different possible values, $varname should be a request
9194: string, and the other parameters can be used to specify who and what
9195: one is asking about.
9196:
9197: Possible values for $varname are environment.lastname (or other item
9198: from the envirnment hash), user.name (or someother aspect about the
9199: user), resource.0.maxtries (or some other part and parameter of a
9200: resource)
9201:
9202: =item *
9203:
9204: directcondval($number) : get current value of a condition; reads from a state
9205: string
9206:
9207: =item *
9208:
9209: condval($condidx) : value of condition index based on state
9210:
9211: =item *
9212:
9213: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
9214: resource's metadata, $what should be either a specific key, or either
9215: 'keys' (to get a list of possible keys) or 'packages' to get a list of
9216: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
9217:
9218: this function automatically caches all requests
9219:
9220: =item *
9221:
9222: metadata_query($query,$custom,$customshow) : make a metadata query against the
9223: network of library servers; returns file handle of where SQL and regex results
9224: will be stored for query
9225:
9226: =item *
9227:
9228: symbread($filename) : return symbolic list entry (filename argument optional);
9229: returns the data handle
9230:
9231: =item *
9232:
9233: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
9234: a possible symb for the URL in $thisfn, and if is an encryypted
9235: resource that the user accessed using /enc/ returns a 1 on success, 0
9236: on failure, user must be in a course, as it assumes the existance of
9237: the course initial hash, and uses $env('request.course.id'}
9238:
9239:
9240: =item *
9241:
9242: symbclean($symb) : removes versions numbers from a symb, returns the
9243: cleaned symb
9244:
9245: =item *
9246:
9247: is_on_map($uri) : checks if the $uri is somewhere on the current
9248: course map, user must be in a course for it to work.
9249:
9250: =item *
9251:
9252: numval($salt) : return random seed value (addend for rndseed)
9253:
9254: =item *
9255:
9256: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
9257: a random seed, all arguments are optional, if they aren't sent it uses the
9258: environment to derive them. Note: if symb isn't sent and it can't get one
9259: from &symbread it will use the current time as its return value
9260:
9261: =item *
9262:
9263: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
9264: unfakeable, receipt
9265:
9266: =item *
9267:
9268: receipt() : API to ireceipt working off of env values; given out to users
9269:
9270: =item *
9271:
9272: countacc($url) : count the number of accesses to a given URL
9273:
9274: =item *
9275:
9276: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
9277:
9278: =item *
9279:
9280: checkin($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 $tcrsid)
9281:
9282: =item *
9283:
9284: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
9285:
9286: =item *
9287:
9288: devalidate($symb) : devalidate temporary spreadsheet calculations,
9289: forcing spreadsheet to reevaluate the resource scores next time.
9290:
9291: =back
9292:
9293: =head2 Storing/Retreiving Data
9294:
9295: =over 4
9296:
9297: =item *
9298:
9299: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
9300: for this url; hashref needs to be given and should be a \%hashname; the
9301: remaining args aren't required and if they aren't passed or are '' they will
9302: be derived from the env
9303:
9304: =item *
9305:
9306: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
9307: uses critical subroutine
9308:
9309: =item *
9310:
9311: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
9312: all args are optional
9313:
9314: =item *
9315:
9316: dumpstore($namespace,$udom,$uname,$regexp,$range) :
9317: dumps the complete (or key matching regexp) namespace into a hash
9318: ($udom, $uname, $regexp, $range are optional) for a namespace that is
9319: normally &store()ed into
9320:
9321: $range should be either an integer '100' (give me the first 100
9322: matching records)
9323: or be two integers sperated by a - with no spaces
9324: '30-50' (give me the 30th through the 50th matching
9325: records)
9326:
9327:
9328: =item *
9329:
9330: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
9331: replaces a &store() version of data with a replacement set of data
9332: for a particular resource in a namespace passed in the $storehash hash
9333: reference
9334:
9335: =item *
9336:
9337: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
9338: works very similar to store/cstore, but all data is stored in a
9339: temporary location and can be reset using tmpreset, $storehash should
9340: be a hash reference, returns nothing on success
9341:
9342: =item *
9343:
9344: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
9345: similar to restore, but all data is stored in a temporary location and
9346: can be reset using tmpreset. Returns a hash of values on success,
9347: error string otherwise.
9348:
9349: =item *
9350:
9351: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
9352: deltes all keys for $symb form the temporary storage hash.
9353:
9354: =item *
9355:
9356: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9357: reference filled in from namesp ($udom and $uname are optional)
9358:
9359: =item *
9360:
9361: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
9362: namesp ($udom and $uname are optional)
9363:
9364: =item *
9365:
9366: dump($namespace,$udom,$uname,$regexp,$range) :
9367: dumps the complete (or key matching regexp) namespace into a hash
9368: ($udom, $uname, $regexp, $range are optional)
9369:
9370: $range should be either an integer '100' (give me the first 100
9371: matching records)
9372: or be two integers sperated by a - with no spaces
9373: '30-50' (give me the 30th through the 50th matching
9374: records)
9375: =item *
9376:
9377: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
9378: $store can be a scalar, an array reference, or if the amount to be
9379: incremented is > 1, a hash reference.
9380:
9381: ($udom and $uname are optional)
9382:
9383: =item *
9384:
9385: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
9386: ($udom and $uname are optional)
9387:
9388: =item *
9389:
9390: cput($namespace,$storehash,$udom,$uname) : critical put
9391: ($udom and $uname are optional)
9392:
9393: =item *
9394:
9395: newput($namespace,$storehash,$udom,$uname) :
9396:
9397: Attempts to store the items in the $storehash, but only if they don't
9398: currently exist, if this succeeds you can be certain that you have
9399: successfully created a new key value pair in the $namespace db.
9400:
9401:
9402: Args:
9403: $namespace: name of database to store values to
9404: $storehash: hashref to store to the db
9405: $udom: (optional) domain of user containing the db
9406: $uname: (optional) name of user caontaining the db
9407:
9408: Returns:
9409: 'ok' -> succeeded in storing all keys of $storehash
9410: 'key_exists: <key>' -> failed to anything out of $storehash, as at
9411: least <key> already existed in the db (other
9412: requested keys may also already exist)
9413: 'error: <msg>' -> unable to tie the DB or other erorr occured
9414: 'con_lost' -> unable to contact request server
9415: 'refused' -> action was not allowed by remote machine
9416:
9417:
9418: =item *
9419:
9420: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9421: reference filled in from namesp (encrypts the return communication)
9422: ($udom and $uname are optional)
9423:
9424: =item *
9425:
9426: log($udom,$name,$home,$message) : write to permanent log for user; use
9427: critical subroutine
9428:
9429: =item *
9430:
9431: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
9432: array reference filled in from namespace found in domain level on either
9433: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
9434:
9435: =item *
9436:
9437: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
9438: domain level either on specified domain server ($uhome) or primary domain
9439: server ($udom and $uhome are optional)
9440:
9441: =item *
9442:
9443: get_domain_defaults($target_domain) : returns hash with defaults for
9444: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
9445: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
9446: or localauth), initial password or a kerberos realm, language (e.g., en-us).
9447: Values are retrieved from cache (if current), or from domain's configuration.db
9448: (if available), or lastly from values in lonTabs/dns_domain,tab,
9449: or lonTabs/domain.tab.
9450:
9451: %domdefaults = &get_auth_defaults($target_domain);
9452:
9453: =back
9454:
9455: =head2 Network Status Functions
9456:
9457: =over 4
9458:
9459: =item *
9460:
9461: dirlist($uri) : return directory list based on URI
9462:
9463: =item *
9464:
9465: spareserver() : find server with least workload from spare.tab
9466:
9467: =back
9468:
9469: =head2 Apache Request
9470:
9471: =over 4
9472:
9473: =item *
9474:
9475: ssi($url,%hash) : server side include, does a complete request cycle on url to
9476: localhost, posts hash
9477:
9478: =back
9479:
9480: =head2 Data to String to Data
9481:
9482: =over 4
9483:
9484: =item *
9485:
9486: hash2str(%hash) : convert a hash into a string complete with escaping and '='
9487: and '&' separators, supports elements that are arrayrefs and hashrefs
9488:
9489: =item *
9490:
9491: hashref2str($hashref) : convert a hashref into a string complete with
9492: escaping and '=' and '&' separators, supports elements that are
9493: arrayrefs and hashrefs
9494:
9495: =item *
9496:
9497: arrayref2str($arrayref) : convert an arrayref into a string complete
9498: with escaping and '&' separators, supports elements that are arrayrefs
9499: and hashrefs
9500:
9501: =item *
9502:
9503: str2hash($string) : convert string to hash using unescaping and
9504: splitting on '=' and '&', supports elements that are arrayrefs and
9505: hashrefs
9506:
9507: =item *
9508:
9509: str2array($string) : convert string to hash using unescaping and
9510: splitting on '&', supports elements that are arrayrefs and hashrefs
9511:
9512: =back
9513:
9514: =head2 Logging Routines
9515:
9516: =over 4
9517:
9518: These routines allow one to make log messages in the lonnet.log and
9519: lonnet.perm logfiles.
9520:
9521: =item *
9522:
9523: logtouch() : make sure the logfile, lonnet.log, exists
9524:
9525: =item *
9526:
9527: logthis() : append message to the normal lonnet.log file, it gets
9528: preiodically rolled over and deleted.
9529:
9530: =item *
9531:
9532: logperm() : append a permanent message to lonnet.perm.log, this log
9533: file never gets deleted by any automated portion of the system, only
9534: messages of critical importance should go in here.
9535:
9536: =back
9537:
9538: =head2 General File Helper Routines
9539:
9540: =over 4
9541:
9542: =item *
9543:
9544: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
9545: (a) files in /uploaded
9546: (i) If a local copy of the file exists -
9547: compares modification date of local copy with last-modified date for
9548: definitive version stored on home server for course. If local copy is
9549: stale, requests a new version from the home server and stores it.
9550: If the original has been removed from the home server, then local copy
9551: is unlinked.
9552: (ii) If local copy does not exist -
9553: requests the file from the home server and stores it.
9554:
9555: If $caller is 'uploadrep':
9556: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
9557: for request for files originally uploaded via DOCS.
9558: - returns 'ok' if fresh local copy now available, -1 otherwise.
9559:
9560: Otherwise:
9561: This indicates a call from the content generation phase of the request.
9562: - returns the entire contents of the file or -1.
9563:
9564: (b) files in /res
9565: - returns the entire contents of a file or -1;
9566: it properly subscribes to and replicates the file if neccessary.
9567:
9568:
9569: =item *
9570:
9571: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
9572: reference
9573:
9574: returns either a stat() list of data about the file or an empty list
9575: if the file doesn't exist or couldn't find out about it (connection
9576: problems or user unknown)
9577:
9578: =item *
9579:
9580: filelocation($dir,$file) : returns file system location of a file
9581: based on URI; meant to be "fairly clean" absolute reference, $dir is a
9582: directory that relative $file lookups are to looked in ($dir of /a/dir
9583: and a file of ../bob will become /a/bob)
9584:
9585: =item *
9586:
9587: hreflocation($dir,$file) : returns file system location or a URL; same as
9588: filelocation except for hrefs
9589:
9590: =item *
9591:
9592: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
9593:
9594: =back
9595:
9596: =head2 Usererfile file routines (/uploaded*)
9597:
9598: =over 4
9599:
9600: =item *
9601:
9602: userfileupload(): main rotine for putting a file in a user or course's
9603: filespace, arguments are,
9604:
9605: formname - required - this is the name of the element in $env where the
9606: filename, and the contents of the file to create/modifed exist
9607: the filename is in $env{'form.'.$formname.'.filename'} and the
9608: contents of the file is located in $env{'form.'.$formname}
9609: coursedoc - if true, store the file in the course of the active role
9610: of the current user
9611: subdir - required - subdirectory to put the file in under ../userfiles/
9612: if undefined, it will be placed in "unknown"
9613:
9614: (This routine calls clean_filename() to remove any dangerous
9615: characters from the filename, and then calls finuserfileupload() to
9616: complete the transaction)
9617:
9618: returns either the url of the uploaded file (/uploaded/....) if successful
9619: and /adm/notfound.html if unsuccessful
9620:
9621: =item *
9622:
9623: clean_filename(): routine for cleaing a filename up for storage in
9624: userfile space, argument is:
9625:
9626: filename - proposed filename
9627:
9628: returns: the new clean filename
9629:
9630: =item *
9631:
9632: finishuserfileupload(): routine that creaes and sends the file to
9633: userspace, probably shouldn't be called directly
9634:
9635: docuname: username or courseid of destination for the file
9636: docudom: domain of user/course of destination for the file
9637: formname: same as for userfileupload()
9638: fname: filename (inculding subdirectories) for the file
9639:
9640: returns either the url of the uploaded file (/uploaded/....) if successful
9641: and /adm/notfound.html if unsuccessful
9642:
9643: =item *
9644:
9645: renameuserfile(): renames an existing userfile to a new name
9646:
9647: Args:
9648: docuname: username or courseid of destination for the file
9649: docudom: domain of user/course of destination for the file
9650: old: current file name (including any subdirs under userfiles)
9651: new: desired file name (including any subdirs under userfiles)
9652:
9653: =item *
9654:
9655: mkdiruserfile(): creates a directory is a userfiles dir
9656:
9657: Args:
9658: docuname: username or courseid of destination for the file
9659: docudom: domain of user/course of destination for the file
9660: dir: dir to create (including any subdirs under userfiles)
9661:
9662: =item *
9663:
9664: removeuserfile(): removes a file that exists in userfiles
9665:
9666: Args:
9667: docuname: username or courseid of destination for the file
9668: docudom: domain of user/course of destination for the file
9669: fname: filname to delete (including any subdirs under userfiles)
9670:
9671: =item *
9672:
9673: removeuploadedurl(): convience function for removeuserfile()
9674:
9675: Args:
9676: url: a full /uploaded/... url to delete
9677:
9678: =item *
9679:
9680: get_portfile_permissions():
9681: Args:
9682: domain: domain of user or course contain the portfolio files
9683: user: name of user or num of course contain the portfolio files
9684: Returns:
9685: hashref of a dump of the proper file_permissions.db
9686:
9687:
9688: =item *
9689:
9690: get_access_controls():
9691:
9692: Args:
9693: current_permissions: the hash ref returned from get_portfile_permissions()
9694: group: (optional) the group you want the files associated with
9695: file: (optional) the file you want access info on
9696:
9697: Returns:
9698: a hash (keys are file names) of hashes containing
9699: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9700: values are XML containing access control settings (see below)
9701:
9702: Internal notes:
9703:
9704: access controls are stored in file_permissions.db as key=value pairs.
9705: key -> path to file/file_name\0uniqueID:scope_end_start
9706: where scope -> public,guest,course,group,domains or users.
9707: end -> UNIX time for end of access (0 -> no end date)
9708: start -> UNIX time for start of access
9709:
9710: value -> XML description of access control
9711: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9712: <start></start>
9713: <end></end>
9714:
9715: <password></password> for scope type = guest
9716:
9717: <domain></domain> for scope type = course or group
9718: <number></number>
9719: <roles id="">
9720: <role></role>
9721: <access></access>
9722: <section></section>
9723: <group></group>
9724: </roles>
9725:
9726: <dom></dom> for scope type = domains
9727:
9728: <users> for scope type = users
9729: <user>
9730: <uname></uname>
9731: <udom></udom>
9732: </user>
9733: </users>
9734: </scope>
9735:
9736: Access data is also aggregated for each file in an additional key=value pair:
9737: key -> path to file/file_name\0accesscontrol
9738: value -> reference to hash
9739: hash contains key = value pairs
9740: where key = uniqueID:scope_end_start
9741: value = UNIX time record was last updated
9742:
9743: Used to improve speed of look-ups of access controls for each file.
9744:
9745: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9746:
9747: modify_access_controls():
9748:
9749: Modifies access controls for a portfolio file
9750: Args
9751: 1. file name
9752: 2. reference to hash of required changes,
9753: 3. domain
9754: 4. username
9755: where domain,username are the domain of the portfolio owner
9756: (either a user or a course)
9757:
9758: Returns:
9759: 1. result of additions or updates ('ok' or 'error', with error message).
9760: 2. result of deletions ('ok' or 'error', with error message).
9761: 3. reference to hash of any new or updated access controls.
9762: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9763: key = integer (inbound ID)
9764: value = uniqueID
9765:
9766: =back
9767:
9768: =head2 HTTP Helper Routines
9769:
9770: =over 4
9771:
9772: =item *
9773:
9774: escape() : unpack non-word characters into CGI-compatible hex codes
9775:
9776: =item *
9777:
9778: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9779:
9780: =back
9781:
9782: =head1 PRIVATE SUBROUTINES
9783:
9784: =head2 Underlying communication routines (Shouldn't call)
9785:
9786: =over 4
9787:
9788: =item *
9789:
9790: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9791:
9792: =item *
9793:
9794: reply() : uses subreply to send a message to remote machine, logs all failures
9795:
9796: =item *
9797:
9798: critical() : passes a critical message to another server; if cannot
9799: get through then place message in connection buffer directory and
9800: returns con_delayed, if incapable of saving message, returns
9801: con_failed
9802:
9803: =item *
9804:
9805: reconlonc() : tries to reconnect lonc client processes.
9806:
9807: =back
9808:
9809: =head2 Resource Access Logging
9810:
9811: =over 4
9812:
9813: =item *
9814:
9815: flushcourselogs() : flush (save) buffer logs and access logs
9816:
9817: =item *
9818:
9819: courselog($what) : save message for course in hash
9820:
9821: =item *
9822:
9823: courseacclog($what) : save message for course using &courselog(). Perform
9824: special processing for specific resource types (problems, exams, quizzes, etc).
9825:
9826: =item *
9827:
9828: goodbye() : flush course logs and log shutting down; it is called in srm.conf
9829: as a PerlChildExitHandler
9830:
9831: =back
9832:
9833: =head2 Other
9834:
9835: =over 4
9836:
9837: =item *
9838:
9839: symblist($mapname,%newhash) : update symbolic storage links
9840:
9841: =back
9842:
9843: =cut
9844:
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