Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.571
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
1.571 ! raeburn 4: # $Id: lonnet.pm,v 1.570 2004/11/17 16:40:00 albertel Exp $
1.178 www 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: #
1.169 harris41 28: ###
29:
1.1 albertel 30: package Apache::lonnet;
31:
32: use strict;
1.8 www 33: use LWP::UserAgent();
1.15 www 34: use HTTP::Headers;
1.486 www 35: use HTTP::Date;
36: # use Date::Parse;
1.11 www 37: use vars
1.300 albertel 38: qw(%perlvar %hostname %homecache %badServerCache %hostip %iphost %spareid %hostdom
1.440 www 39: %libserv %pr %prp %metacache %packagetab %titlecache %courseresversioncache %resversioncache
1.349 www 40: %courselogs %accesshash %userrolehash $processmarker $dumpcount
1.571 ! raeburn 41: %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseownerbuf %courseresdatacache
1.551 albertel 42: %userresdatacache %getsectioncache %domaindescription %domain_auth_def %domain_auth_arg_def
1.564 albertel 43: %domain_lang_def %domain_city %domain_longi %domain_lati $tmpdir $_64bit);
1.403 www 44:
1.1 albertel 45: use IO::Socket;
1.31 www 46: use GDBM_File;
1.8 www 47: use Apache::Constants qw(:common :http);
1.208 albertel 48: use HTML::LCParser;
1.88 www 49: use Fcntl qw(:flock);
1.414 www 50: use Apache::lonlocal;
1.557 albertel 51: use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw nfreeze);
1.539 albertel 52: use Time::HiRes qw( gettimeofday tv_interval );
1.195 www 53: my $readit;
1.550 foxr 54: my $max_connection_retries = 10; # Or some such value.
1.1 albertel 55:
1.449 matthew 56: =pod
57:
58: =head1 Package Variables
59:
60: These are largely undocumented, so if you decipher one please note it here.
61:
62: =over 4
63:
64: =item $processmarker
65:
66: Contains the time this process was started and this servers host id.
67:
68: =item $dumpcount
69:
70: Counts the number of times a message log flush has been attempted (regardless
71: of success) by this process. Used as part of the filename when messages are
72: delayed.
73:
74: =back
75:
76: =cut
77:
78:
1.1 albertel 79: # --------------------------------------------------------------------- Logging
80:
1.163 harris41 81: sub logtouch {
82: my $execdir=$perlvar{'lonDaemons'};
1.448 albertel 83: unless (-e "$execdir/logs/lonnet.log") {
84: open(my $fh,">>$execdir/logs/lonnet.log");
1.163 harris41 85: close $fh;
86: }
87: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
88: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
89: }
90:
1.1 albertel 91: sub logthis {
92: my $message=shift;
93: my $execdir=$perlvar{'lonDaemons'};
94: my $now=time;
95: my $local=localtime($now);
1.448 albertel 96: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
97: print $fh "$local ($$): $message\n";
98: close($fh);
99: }
1.1 albertel 100: return 1;
101: }
102:
103: sub logperm {
104: my $message=shift;
105: my $execdir=$perlvar{'lonDaemons'};
106: my $now=time;
107: my $local=localtime($now);
1.448 albertel 108: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
109: print $fh "$now:$message:$local\n";
110: close($fh);
111: }
1.1 albertel 112: return 1;
113: }
114:
115: # -------------------------------------------------- Non-critical communication
116: sub subreply {
117: my ($cmd,$server)=@_;
118: my $peerfile="$perlvar{'lonSockDir'}/$server";
1.549 foxr 119: #
120: # With loncnew process trimming, there's a timing hole between lonc server
121: # process exit and the master server picking up the listen on the AF_UNIX
122: # socket. In that time interval, a lock file will exist:
123:
124: my $lockfile=$peerfile.".lock";
125: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
126: sleep(1);
127: }
128: # At this point, either a loncnew parent is listening or an old lonc
1.550 foxr 129: # or loncnew child is listening so we can connect or everything's dead.
1.549 foxr 130: #
1.550 foxr 131: # We'll give the connection a few tries before abandoning it. If
132: # connection is not possible, we'll con_lost back to the client.
133: #
134: my $client;
135: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
136: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
137: Type => SOCK_STREAM,
138: Timeout => 10);
139: if($client) {
140: last; # Connected!
141: }
142: sleep(1); # Try again later if failed connection.
143: }
144: my $answer;
145: if ($client) {
146: print $client "$cmd\n";
147: $answer=<$client>;
148: if (!$answer) { $answer="con_lost"; }
149: chomp($answer);
150: } else {
151: $answer = 'con_lost'; # Failed connection.
152: }
1.1 albertel 153: return $answer;
154: }
155:
156: sub reply {
157: my ($cmd,$server)=@_;
1.205 www 158: unless (defined($hostname{$server})) { return 'no_such_host'; }
1.1 albertel 159: my $answer=subreply($cmd,$server);
1.203 www 160: if ($answer eq 'con_lost') {
1.311 matthew 161: #sleep 5;
162: #$answer=subreply($cmd,$server);
163: #if ($answer eq 'con_lost') {
1.233 albertel 164: # &logthis("Second attempt con_lost on $server");
165: # my $peerfile="$perlvar{'lonSockDir'}/$server";
166: # my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
167: # Type => SOCK_STREAM,
168: # Timeout => 10)
169: # or return "con_lost";
170: # &logthis("Killing socket");
171: # print $client "close_connection_exit\n";
172: #sleep 5;
173: # $answer=subreply($cmd,$server);
174: #}
1.203 www 175: }
1.65 www 176: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.12 www 177: &logthis("<font color=blue>WARNING:".
178: " $cmd to $server returned $answer</font>");
179: }
1.1 albertel 180: return $answer;
181: }
182:
183: # ----------------------------------------------------------- Send USR1 to lonc
184:
185: sub reconlonc {
186: my $peerfile=shift;
187: &logthis("Trying to reconnect for $peerfile");
188: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
1.448 albertel 189: if (open(my $fh,"<$loncfile")) {
1.1 albertel 190: my $loncpid=<$fh>;
191: chomp($loncpid);
192: if (kill 0 => $loncpid) {
193: &logthis("lonc at pid $loncpid responding, sending USR1");
194: kill USR1 => $loncpid;
195: sleep 1;
196: if (-e "$peerfile") { return; }
197: &logthis("$peerfile still not there, give it another try");
198: sleep 5;
199: if (-e "$peerfile") { return; }
1.12 www 200: &logthis(
201: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 202: } else {
1.12 www 203: &logthis(
204: "<font color=blue>WARNING:".
205: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 206: }
207: } else {
1.12 www 208: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 209: }
210: }
211:
212: # ------------------------------------------------------ Critical communication
1.12 www 213:
1.1 albertel 214: sub critical {
215: my ($cmd,$server)=@_;
1.89 www 216: unless ($hostname{$server}) {
217: &logthis("<font color=blue>WARNING:".
218: " Critical message to unknown server ($server)</font>");
219: return 'no_such_host';
220: }
1.1 albertel 221: my $answer=reply($cmd,$server);
222: if ($answer eq 'con_lost') {
223: my $pingreply=reply('ping',$server);
224: &reconlonc("$perlvar{'lonSockDir'}/$server");
225: my $pongreply=reply('pong',$server);
226: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
227: $answer=reply($cmd,$server);
228: if ($answer eq 'con_lost') {
229: my $now=time;
230: my $middlename=$cmd;
1.5 www 231: $middlename=substr($middlename,0,16);
1.1 albertel 232: $middlename=~s/\W//g;
233: my $dfilename=
1.305 www 234: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
235: $dumpcount++;
1.1 albertel 236: {
1.448 albertel 237: my $dfh;
238: if (open($dfh,">$dfilename")) {
239: print $dfh "$cmd\n";
240: close($dfh);
241: }
1.1 albertel 242: }
243: sleep 2;
244: my $wcmd='';
245: {
1.448 albertel 246: my $dfh;
247: if (open($dfh,"<$dfilename")) {
248: $wcmd=<$dfh>;
249: close($dfh);
250: }
1.1 albertel 251: }
252: chomp($wcmd);
1.7 www 253: if ($wcmd eq $cmd) {
1.12 www 254: &logthis("<font color=blue>WARNING: ".
255: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 256: &logperm("D:$server:$cmd");
257: return 'con_delayed';
258: } else {
1.12 www 259: &logthis("<font color=red>CRITICAL:"
260: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 261: &logperm("F:$server:$cmd");
262: return 'con_failed';
263: }
264: }
265: }
266: return $answer;
1.405 albertel 267: }
268:
1.412 www 269: #
1.405 albertel 270: # -------------- Remove all key from the env that start witha lowercase letter
1.412 www 271: # (Which is always a lon-capa value)
272:
1.405 albertel 273: sub cleanenv {
1.412 www 274: # unless (defined(&Apache::exists_config_define("MODPERL2"))) { return; }
275: # unless (&Apache::exists_config_define("MODPERL2")) { return; }
1.405 albertel 276: foreach my $key (keys(%ENV)) {
277: if ($key =~ /^[a-z]/) {
278: delete($ENV{$key});
279: }
280: }
1.374 www 281: }
282:
283: # ------------------------------------------- Transfer profile into environment
284:
285: sub transfer_profile_to_env {
286: my ($lonidsdir,$handle)=@_;
287: my @profile;
288: {
1.448 albertel 289: open(my $idf,"$lonidsdir/$handle.id");
1.374 www 290: flock($idf,LOCK_SH);
291: @profile=<$idf>;
1.448 albertel 292: close($idf);
1.374 www 293: }
294: my $envi;
1.433 matthew 295: my %Remove;
1.374 www 296: for ($envi=0;$envi<=$#profile;$envi++) {
297: chomp($profile[$envi]);
298: my ($envname,$envvalue)=split(/=/,$profile[$envi]);
299: $ENV{$envname} = $envvalue;
1.433 matthew 300: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
301: if ($time < time-300) {
302: $Remove{$key}++;
303: }
304: }
305: }
1.446 albertel 306: $ENV{'user.environment'} = "$lonidsdir/$handle.id";
1.433 matthew 307: foreach my $expired_key (keys(%Remove)) {
308: &delenv($expired_key);
1.374 www 309: }
1.1 albertel 310: }
311:
1.5 www 312: # ---------------------------------------------------------- Append Environment
313:
314: sub appenv {
1.6 www 315: my %newenv=@_;
1.191 harris41 316: foreach (keys %newenv) {
1.35 www 317: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
318: &logthis("<font color=blue>WARNING: ".
1.151 www 319: "Attempt to modify environment ".$_." to ".$newenv{$_}
320: .'</font>');
1.35 www 321: delete($newenv{$_});
322: } else {
323: $ENV{$_}=$newenv{$_};
324: }
1.191 harris41 325: }
1.95 www 326:
327: my $lockfh;
1.448 albertel 328: unless (open($lockfh,"$ENV{'user.environment'}")) {
329: return 'error: '.$!;
1.95 www 330: }
331: unless (flock($lockfh,LOCK_EX)) {
332: &logthis("<font color=blue>WARNING: ".
333: 'Could not obtain exclusive lock in appenv: '.$!);
1.448 albertel 334: close($lockfh);
1.95 www 335: return 'error: '.$!;
336: }
337:
1.6 www 338: my @oldenv;
339: {
1.448 albertel 340: my $fh;
341: unless (open($fh,"$ENV{'user.environment'}")) {
342: return 'error: '.$!;
343: }
344: @oldenv=<$fh>;
345: close($fh);
1.6 www 346: }
347: for (my $i=0; $i<=$#oldenv; $i++) {
348: chomp($oldenv[$i]);
1.9 www 349: if ($oldenv[$i] ne '') {
1.448 albertel 350: my ($name,$value)=split(/=/,$oldenv[$i]);
351: unless (defined($newenv{$name})) {
352: $newenv{$name}=$value;
353: }
1.9 www 354: }
1.6 www 355: }
356: {
1.448 albertel 357: my $fh;
358: unless (open($fh,">$ENV{'user.environment'}")) {
359: return 'error';
360: }
361: my $newname;
362: foreach $newname (keys %newenv) {
363: print $fh "$newname=$newenv{$newname}\n";
364: }
365: close($fh);
1.56 www 366: }
1.448 albertel 367:
368: close($lockfh);
1.56 www 369: return 'ok';
370: }
371: # ----------------------------------------------------- Delete from Environment
372:
373: sub delenv {
374: my $delthis=shift;
375: my %newenv=();
376: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
377: &logthis("<font color=blue>WARNING: ".
378: "Attempt to delete from environment ".$delthis);
379: return 'error';
380: }
381: my @oldenv;
382: {
1.448 albertel 383: my $fh;
384: unless (open($fh,"$ENV{'user.environment'}")) {
385: return 'error';
386: }
387: unless (flock($fh,LOCK_SH)) {
388: &logthis("<font color=blue>WARNING: ".
389: 'Could not obtain shared lock in delenv: '.$!);
390: close($fh);
391: return 'error: '.$!;
392: }
393: @oldenv=<$fh>;
394: close($fh);
1.56 www 395: }
396: {
1.448 albertel 397: my $fh;
398: unless (open($fh,">$ENV{'user.environment'}")) {
399: return 'error';
400: }
401: unless (flock($fh,LOCK_EX)) {
402: &logthis("<font color=blue>WARNING: ".
403: 'Could not obtain exclusive lock in delenv: '.$!);
404: close($fh);
405: return 'error: '.$!;
406: }
407: foreach (@oldenv) {
1.473 matthew 408: if ($_=~/^$delthis/) {
409: my ($key,undef) = split('=',$_);
410: delete($ENV{$key});
411: } else {
412: print $fh $_;
413: }
1.448 albertel 414: }
415: close($fh);
1.5 www 416: }
417: return 'ok';
1.369 albertel 418: }
419:
420: # ------------------------------------------ Find out current server userload
421: # there is a copy in lond
422: sub userload {
423: my $numusers=0;
424: {
425: opendir(LONIDS,$perlvar{'lonIDsDir'});
426: my $filename;
427: my $curtime=time;
428: while ($filename=readdir(LONIDS)) {
429: if ($filename eq '.' || $filename eq '..') {next;}
1.404 albertel 430: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
1.437 albertel 431: if ($curtime-$mtime < 1800) { $numusers++; }
1.369 albertel 432: }
433: closedir(LONIDS);
434: }
435: my $userloadpercent=0;
436: my $maxuserload=$perlvar{'lonUserLoadLim'};
437: if ($maxuserload) {
1.371 albertel 438: $userloadpercent=100*$numusers/$maxuserload;
1.369 albertel 439: }
1.372 albertel 440: $userloadpercent=sprintf("%.2f",$userloadpercent);
1.369 albertel 441: return $userloadpercent;
1.283 www 442: }
443:
444: # ------------------------------------------ Fight off request when overloaded
445:
446: sub overloaderror {
447: my ($r,$checkserver)=@_;
448: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
449: my $loadavg;
450: if ($checkserver eq $perlvar{'lonHostID'}) {
1.448 albertel 451: open(my $loadfile,'/proc/loadavg');
1.283 www 452: $loadavg=<$loadfile>;
453: $loadavg =~ s/\s.*//g;
1.285 matthew 454: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
1.448 albertel 455: close($loadfile);
1.283 www 456: } else {
457: $loadavg=&reply('load',$checkserver);
458: }
1.285 matthew 459: my $overload=$loadavg-100;
1.283 www 460: if ($overload>0) {
1.285 matthew 461: $r->err_headers_out->{'Retry-After'}=$overload;
1.283 www 462: $r->log_error('Overload of '.$overload.' on '.$checkserver);
1.554 www 463: return 413;
1.283 www 464: }
465: return '';
1.5 www 466: }
1.1 albertel 467:
468: # ------------------------------ Find server with least workload from spare.tab
1.11 www 469:
1.1 albertel 470: sub spareserver {
1.370 albertel 471: my ($loadpercent,$userloadpercent) = @_;
1.1 albertel 472: my $tryserver;
473: my $spareserver='';
1.370 albertel 474: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
475: my $lowestserver=$loadpercent > $userloadpercent?
476: $loadpercent : $userloadpercent;
1.1 albertel 477: foreach $tryserver (keys %spareid) {
1.411 albertel 478: my $loadans=reply('load',$tryserver);
479: my $userloadans=reply('userload',$tryserver);
480: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
481: next; #didn't get a number from the server
482: }
483: my $answer;
484: if ($loadans =~ /\d/) {
485: if ($userloadans =~ /\d/) {
486: #both are numbers, pick the bigger one
487: $answer=$loadans > $userloadans?
488: $loadans : $userloadans;
489: } else {
490: $answer = $loadans;
491: }
492: } else {
493: $answer = $userloadans;
494: }
495: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
496: $spareserver="http://$hostname{$tryserver}";
497: $lowestserver=$answer;
498: }
1.370 albertel 499: }
1.1 albertel 500: return $spareserver;
1.202 matthew 501: }
502:
503: # --------------------------------------------- Try to change a user's password
504:
505: sub changepass {
506: my ($uname,$udom,$currentpass,$newpass,$server)=@_;
507: $currentpass = &escape($currentpass);
508: $newpass = &escape($newpass);
509: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass",
510: $server);
511: if (! $answer) {
512: &logthis("No reply on password change request to $server ".
513: "by $uname in domain $udom.");
514: } elsif ($answer =~ "^ok") {
515: &logthis("$uname in $udom successfully changed their password ".
516: "on $server.");
517: } elsif ($answer =~ "^pwchange_failure") {
518: &logthis("$uname in $udom was unable to change their password ".
519: "on $server. The action was blocked by either lcpasswd ".
520: "or pwchange");
521: } elsif ($answer =~ "^non_authorized") {
522: &logthis("$uname in $udom did not get their password correct when ".
523: "attempting to change it on $server.");
524: } elsif ($answer =~ "^auth_mode_error") {
525: &logthis("$uname in $udom attempted to change their password despite ".
526: "not being locally or internally authenticated on $server.");
527: } elsif ($answer =~ "^unknown_user") {
528: &logthis("$uname in $udom attempted to change their password ".
529: "on $server but were unable to because $server is not ".
530: "their home server.");
531: } elsif ($answer =~ "^refused") {
532: &logthis("$server refused to change $uname in $udom password because ".
533: "it was sent an unencrypted request to change the password.");
534: }
535: return $answer;
1.1 albertel 536: }
537:
1.169 harris41 538: # ----------------------- Try to determine user's current authentication scheme
539:
540: sub queryauthenticate {
541: my ($uname,$udom)=@_;
1.456 albertel 542: my $uhome=&homeserver($uname,$udom);
543: if (!$uhome) {
544: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
545: return 'no_host';
546: }
547: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
548: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
549: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.169 harris41 550: }
1.456 albertel 551: return $answer;
1.169 harris41 552: }
553:
1.1 albertel 554: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 555:
1.1 albertel 556: sub authenticate {
557: my ($uname,$upass,$udom)=@_;
1.12 www 558: $upass=escape($upass);
1.199 www 559: $uname=~s/\W//g;
1.471 albertel 560: my $uhome=&homeserver($uname,$udom);
561: if (!$uhome) {
562: &logthis("User $uname at $udom is unknown in authenticate");
563: return 'no_host';
1.1 albertel 564: }
1.471 albertel 565: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
566: if ($answer eq 'authorized') {
567: &logthis("User $uname at $udom authorized by $uhome");
568: return $uhome;
569: }
570: if ($answer eq 'non_authorized') {
571: &logthis("User $uname at $udom rejected by $uhome");
572: return 'no_host';
1.9 www 573: }
1.471 albertel 574: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.1 albertel 575: return 'no_host';
576: }
577:
578: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 579:
1.1 albertel 580: sub homeserver {
1.230 stredwic 581: my ($uname,$udom,$ignoreBadCache)=@_;
1.1 albertel 582: my $index="$uname:$udom";
1.426 albertel 583:
584: my ($result,$cached)=&is_cached(\%homecache,$index,'home',86400);
585: if (defined($cached)) { return $result; }
1.1 albertel 586: my $tryserver;
587: foreach $tryserver (keys %libserv) {
1.230 stredwic 588: next if ($ignoreBadCache ne 'true' &&
1.231 stredwic 589: exists($badServerCache{$tryserver}));
1.1 albertel 590: if ($hostdom{$tryserver} eq $udom) {
591: my $answer=reply("home:$udom:$uname",$tryserver);
592: if ($answer eq 'found') {
1.426 albertel 593: return &do_cache(\%homecache,$index,$tryserver,'home');
1.231 stredwic 594: } elsif ($answer eq 'no_host') {
595: $badServerCache{$tryserver}=1;
1.221 matthew 596: }
1.1 albertel 597: }
598: }
599: return 'no_host';
1.70 www 600: }
601:
602: # ------------------------------------- Find the usernames behind a list of IDs
603:
604: sub idget {
605: my ($udom,@ids)=@_;
606: my %returnhash=();
607:
608: my $tryserver;
609: foreach $tryserver (keys %libserv) {
610: if ($hostdom{$tryserver} eq $udom) {
611: my $idlist=join('&',@ids);
612: $idlist=~tr/A-Z/a-z/;
613: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
614: my @answer=();
1.76 www 615: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 616: @answer=split(/\&/,$reply);
617: } ;
618: my $i;
619: for ($i=0;$i<=$#ids;$i++) {
620: if ($answer[$i]) {
621: $returnhash{$ids[$i]}=$answer[$i];
622: }
623: }
624: }
625: }
626: return %returnhash;
627: }
628:
629: # ------------------------------------- Find the IDs behind a list of usernames
630:
631: sub idrget {
632: my ($udom,@unames)=@_;
633: my %returnhash=();
1.191 harris41 634: foreach (@unames) {
1.70 www 635: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
1.191 harris41 636: }
1.70 www 637: return %returnhash;
638: }
639:
640: # ------------------------------- Store away a list of names and associated IDs
641:
642: sub idput {
643: my ($udom,%ids)=@_;
644: my %servers=();
1.191 harris41 645: foreach (keys %ids) {
1.487 albertel 646: &cput('environment',{'id'=>$ids{$_}},$udom,$_);
1.70 www 647: my $uhom=&homeserver($_,$udom);
648: if ($uhom ne 'no_host') {
649: my $id=&escape($ids{$_});
650: $id=~tr/A-Z/a-z/;
651: my $unam=&escape($_);
652: if ($servers{$uhom}) {
653: $servers{$uhom}.='&'.$id.'='.$unam;
654: } else {
655: $servers{$uhom}=$id.'='.$unam;
656: }
657: }
1.191 harris41 658: }
659: foreach (keys %servers) {
1.70 www 660: &critical('idput:'.$udom.':'.$servers{$_},$_);
1.191 harris41 661: }
1.344 www 662: }
663:
664: # --------------------------------------------------- Assign a key to a student
665:
666: sub assign_access_key {
1.364 www 667: #
668: # a valid key looks like uname:udom#comments
669: # comments are being appended
670: #
1.498 www 671: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
672: $kdom=
673: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($kdom));
674: $knum=
675: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($knum));
1.344 www 676: $cdom=
677: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
678: $cnum=
679: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
680: $udom=$ENV{'user.name'} unless (defined($udom));
681: $uname=$ENV{'user.domain'} unless (defined($uname));
1.498 www 682: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1.364 www 683: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1.479 albertel 684: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1.364 www 685: # assigned to this person
686: # - this should not happen,
1.345 www 687: # unless something went wrong
688: # the first time around
689: # ready to assign
1.364 www 690: $logentry=$1.'; '.$logentry;
1.496 www 691: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1.498 www 692: $kdom,$knum) eq 'ok') {
1.345 www 693: # key now belongs to user
1.346 www 694: my $envkey='key.'.$cdom.'_'.$cnum;
1.345 www 695: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
696: &appenv('environment.'.$envkey => $ckey);
697: return 'ok';
698: } else {
699: return
700: 'error: Count not permanently assign key, will need to be re-entered later.';
701: }
702: } else {
703: return 'error: Could not assign key, try again later.';
704: }
1.364 www 705: } elsif (!$existing{$ckey}) {
1.345 www 706: # the key does not exist
707: return 'error: The key does not exist';
708: } else {
709: # the key is somebody else's
710: return 'error: The key is already in use';
711: }
1.344 www 712: }
713:
1.364 www 714: # ------------------------------------------ put an additional comment on a key
715:
716: sub comment_access_key {
717: #
718: # a valid key looks like uname:udom#comments
719: # comments are being appended
720: #
721: my ($ckey,$cdom,$cnum,$logentry)=@_;
722: $cdom=
723: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
724: $cnum=
725: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
726: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
727: if ($existing{$ckey}) {
728: $existing{$ckey}.='; '.$logentry;
729: # ready to assign
1.367 www 730: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1.364 www 731: $cdom,$cnum) eq 'ok') {
732: return 'ok';
733: } else {
734: return 'error: Count not store comment.';
735: }
736: } else {
737: # the key does not exist
738: return 'error: The key does not exist';
739: }
740: }
741:
1.344 www 742: # ------------------------------------------------------ Generate a set of keys
743:
744: sub generate_access_keys {
1.364 www 745: my ($number,$cdom,$cnum,$logentry)=@_;
1.344 www 746: $cdom=
747: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
748: $cnum=
749: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
1.361 www 750: unless (&allowed('mky',$cdom)) { return 0; }
1.344 www 751: unless (($cdom) && ($cnum)) { return 0; }
752: if ($number>10000) { return 0; }
753: sleep(2); # make sure don't get same seed twice
754: srand(time()^($$+($$<<15))); # from "Programming Perl"
755: my $total=0;
756: for (my $i=1;$i<=$number;$i++) {
757: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
758: sprintf("%lx",int(100000*rand)).'-'.
759: sprintf("%lx",int(100000*rand));
760: $newkey=~s/1/g/g; # folks mix up 1 and l
761: $newkey=~s/0/h/g; # and also 0 and O
762: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
763: if ($existing{$newkey}) {
764: $i--;
765: } else {
1.364 www 766: if (&put('accesskeys',
767: { $newkey => '# generated '.localtime().
768: ' by '.$ENV{'user.name'}.'@'.$ENV{'user.domain'}.
769: '; '.$logentry },
770: $cdom,$cnum) eq 'ok') {
1.344 www 771: $total++;
772: }
773: }
774: }
775: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
776: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
777: return $total;
778: }
779:
780: # ------------------------------------------------------- Validate an accesskey
781:
782: sub validate_access_key {
783: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
784: $cdom=
785: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
786: $cnum=
787: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
1.497 www 788: $udom=$ENV{'user.domain'} unless (defined($udom));
789: $uname=$ENV{'user.name'} unless (defined($uname));
1.345 www 790: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1.479 albertel 791: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1.70 www 792: }
793:
794: # ------------------------------------- Find the section of student in a course
1.298 matthew 795:
796: sub getsection {
797: my ($udom,$unam,$courseid)=@_;
798: $courseid=~s/\_/\//g;
799: $courseid=~s/^(\w)/\/$1/;
1.551 albertel 800:
801: my $hashid="$udom:$unam:$courseid";
802: my ($result,$cached)=&is_cached(\%getsectioncache,$hashid,'getsection');
803: if (defined($cached)) { return $result; }
804:
1.298 matthew 805: my %Pending;
806: my %Expired;
807: #
808: # Each role can either have not started yet (pending), be active,
809: # or have expired.
810: #
811: # If there is an active role, we are done.
812: #
813: # If there is more than one role which has not started yet,
814: # choose the one which will start sooner
815: # If there is one role which has not started yet, return it.
816: #
817: # If there is more than one expired role, choose the one which ended last.
818: # If there is a role which has expired, return it.
819: #
820: foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
821: &homeserver($unam,$udom)))) {
822: my ($key,$value)=split(/\=/,$_);
823: $key=&unescape($key);
1.479 albertel 824: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1.298 matthew 825: my $section=$1;
826: if ($key eq $courseid.'_st') { $section=''; }
827: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
828: my $now=time;
1.548 albertel 829: if (defined($end) && $end && ($now > $end)) {
1.298 matthew 830: $Expired{$end}=$section;
831: next;
832: }
1.548 albertel 833: if (defined($start) && $start && ($now < $start)) {
1.298 matthew 834: $Pending{$start}=$section;
835: next;
836: }
1.551 albertel 837: return &do_cache(\%getsectioncache,$hashid,$section,'getsection');
1.298 matthew 838: }
839: #
840: # Presumedly there will be few matching roles from the above
841: # loop and the sorting time will be negligible.
842: if (scalar(keys(%Pending))) {
843: my ($time) = sort {$a <=> $b} keys(%Pending);
1.551 albertel 844: return &do_cache(\%getsectioncache,$hashid,$Pending{$time},'getsection');
1.298 matthew 845: }
846: if (scalar(keys(%Expired))) {
847: my @sorted = sort {$a <=> $b} keys(%Expired);
848: my $time = pop(@sorted);
1.551 albertel 849: return &do_cache(\%getsectioncache,$hashid,$Expired{$time},'getsection');
1.298 matthew 850: }
1.551 albertel 851: return &do_cache(\%getsectioncache,$hashid,'-1','getsection');
1.298 matthew 852: }
1.70 www 853:
1.452 albertel 854:
1.552 albertel 855: my $disk_caching_disabled=1;
1.452 albertel 856:
1.416 albertel 857: sub devalidate_cache {
1.428 albertel 858: my ($cache,$id,$name) = @_;
1.417 albertel 859: delete $$cache{$id.'.time'};
1.543 albertel 860: delete $$cache{$id.'.file'};
1.417 albertel 861: delete $$cache{$id};
1.541 albertel 862: if (1 || $disk_caching_disabled) { return; }
1.442 albertel 863: my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
1.541 albertel 864: if (!-e $filename) { return; }
865: open(DB,">$filename.lock");
1.428 albertel 866: flock(DB,LOCK_EX);
867: my %hash;
868: if (tie(%hash,'GDBM_File',$filename,&GDBM_WRCREAT(),0640)) {
1.442 albertel 869: eval <<'EVALBLOCK';
870: delete($hash{$id});
871: delete($hash{$id.'.time'});
872: EVALBLOCK
873: if ($@) {
874: &logthis("<font color='red'>devalidate_cache blew up :$@:$name</font>");
875: unlink($filename);
876: }
1.428 albertel 877: } else {
1.442 albertel 878: if (-e $filename) {
879: &logthis("Unable to tie hash (devalidate cache): $name");
880: unlink($filename);
881: }
1.428 albertel 882: }
883: untie(%hash);
884: flock(DB,LOCK_UN);
885: close(DB);
1.416 albertel 886: }
887:
888: sub is_cached {
1.425 albertel 889: my ($cache,$id,$name,$time) = @_;
1.420 albertel 890: if (!$time) { $time=300; }
1.416 albertel 891: if (!exists($$cache{$id.'.time'})) {
1.542 albertel 892: &load_cache_item($cache,$name,$id,$time);
1.425 albertel 893: }
894: if (!exists($$cache{$id.'.time'})) {
895: # &logthis("Didn't find $id");
1.417 albertel 896: return (undef,undef);
1.416 albertel 897: } else {
1.425 albertel 898: if (time-($$cache{$id.'.time'})>$time) {
1.543 albertel 899: if (exists($$cache{$id.'.file'})) {
900: foreach my $filename (@{ $$cache{$id.'.file'} }) {
901: my $mtime=(stat($filename))[9];
902: #+1 is to take care of edge effects
903: if ($mtime && (($mtime+1) < ($$cache{$id.'.time'}))) {
904: # &logthis("Upping $mtime - ".$$cache{$id.'.time'}.
905: # "$id because of $filename");
906: } else {
907: &logthis("Devalidating $filename $id - ".(time-($$cache{$id.'.time'})));
908: &devalidate_cache($cache,$id,$name);
909: return (undef,undef);
910: }
911: }
912: $$cache{$id.'.time'}=time;
913: } else {
914: # &logthis("Devalidating $id - ".time-($$cache{$id.'.time'}));
915: &devalidate_cache($cache,$id,$name);
916: return (undef,undef);
917: }
1.416 albertel 918: }
919: }
1.417 albertel 920: return ($$cache{$id},1);
1.416 albertel 921: }
922:
923: sub do_cache {
1.425 albertel 924: my ($cache,$id,$value,$name) = @_;
1.416 albertel 925: $$cache{$id.'.time'}=time;
1.425 albertel 926: $$cache{$id}=$value;
1.428 albertel 927: # &logthis("Caching $id as :$value:");
928: &save_cache_item($cache,$name,$id);
1.416 albertel 929: # do_cache implictly return the set value
1.425 albertel 930: $$cache{$id};
931: }
932:
1.541 albertel 933: my %do_save_item;
934: my %do_save;
1.428 albertel 935: sub save_cache_item {
936: my ($cache,$name,$id)=@_;
1.452 albertel 937: if ($disk_caching_disabled) { return; }
1.541 albertel 938: $do_save{$name}=$cache;
939: if (!exists($do_save_item{$name})) { $do_save_item{$name}={} }
940: $do_save_item{$name}->{$id}=1;
941: return;
942: }
943:
944: sub save_cache {
945: if ($disk_caching_disabled) { return; }
946: my ($cache,$name,$id);
947: foreach $name (keys(%do_save)) {
948: $cache=$do_save{$name};
949:
950: my $starttime=&Time::HiRes::time();
951: &logthis("Saving :$name:");
952: my %hash;
953: my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
954: open(DB,">$filename.lock");
955: flock(DB,LOCK_EX);
956: if (tie(%hash,'GDBM_File',$filename,&GDBM_WRCREAT(),0640)) {
957: foreach $id (keys(%{ $do_save_item{$name} })) {
958: eval <<'EVALBLOCK';
959: $hash{$id.'.time'}=$$cache{$id.'.time'};
960: $hash{$id}=freeze({'item'=>$$cache{$id}});
1.544 albertel 961: if (exists($$cache{$id.'.file'})) {
962: $hash{$id.'.file'}=freeze({'item'=>$$cache{$id.'.file'}});
963: }
1.442 albertel 964: EVALBLOCK
1.541 albertel 965: if ($@) {
966: &logthis("<font color='red'>save_cache blew up :$@:$name</font>");
967: unlink($filename);
968: last;
969: }
970: }
971: } else {
972: if (-e $filename) {
973: &logthis("Unable to tie hash (save cache): $name ($!)");
974: unlink($filename);
975: }
1.442 albertel 976: }
1.541 albertel 977: untie(%hash);
978: flock(DB,LOCK_UN);
979: close(DB);
980: &logthis("save_cache $name took ".(&Time::HiRes::time()-$starttime));
1.428 albertel 981: }
1.541 albertel 982: undef(%do_save);
983: undef(%do_save_item);
984:
1.428 albertel 985: }
986:
987: sub load_cache_item {
1.542 albertel 988: my ($cache,$name,$id,$time)=@_;
1.452 albertel 989: if ($disk_caching_disabled) { return; }
1.428 albertel 990: my $starttime=&Time::HiRes::time();
991: # &logthis("Before Loading $name for $id size is ".scalar(%$cache));
992: my %hash;
1.442 albertel 993: my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
1.541 albertel 994: if (!-e $filename) { return; }
995: open(DB,">$filename.lock");
1.428 albertel 996: flock(DB,LOCK_SH);
997: if (tie(%hash,'GDBM_File',$filename,&GDBM_READER(),0640)) {
1.442 albertel 998: eval <<'EVALBLOCK';
999: if (!%$cache) {
1000: my $count;
1001: while (my ($key,$value)=each(%hash)) {
1002: $count++;
1003: if ($key =~ /\.time$/) {
1004: $$cache{$key}=$value;
1005: } else {
1006: my $hashref=thaw($value);
1007: $$cache{$key}=$hashref->{'item'};
1008: }
1.428 albertel 1009: }
1.442 albertel 1010: # &logthis("Initial load: $count");
1011: } else {
1.542 albertel 1012: if (($$cache{$id.'.time'}+$time) < time) {
1013: $$cache{$id.'.time'}=$hash{$id.'.time'};
1.544 albertel 1014: {
1015: my $hashref=thaw($hash{$id});
1016: $$cache{$id}=$hashref->{'item'};
1017: }
1018: if (exists($hash{$id.'.file'})) {
1019: my $hashref=thaw($hash{$id.'.file'});
1020: $$cache{$id.'.file'}=$hashref->{'item'};
1021: }
1.542 albertel 1022: }
1.428 albertel 1023: }
1.442 albertel 1024: EVALBLOCK
1025: if ($@) {
1026: &logthis("<font color='red'>load_cache blew up :$@:$name</font>");
1027: unlink($filename);
1028: }
1029: } else {
1030: if (-e $filename) {
1.445 www 1031: &logthis("Unable to tie hash (load cache item): $name ($!)");
1.442 albertel 1032: unlink($filename);
1.428 albertel 1033: }
1034: }
1035: untie(%hash);
1036: flock(DB,LOCK_UN);
1037: close(DB);
1038: # &logthis("After Loading $name size is ".scalar(%$cache));
1039: # &logthis("load_cache_item $name took ".(&Time::HiRes::time()-$starttime));
1040: }
1041:
1.70 www 1042: # ------------------------------------- Read an entry from a user's environment
1043:
1044: sub userenvironment {
1045: my ($udom,$unam,@what)=@_;
1046: my %returnhash=();
1047: my @answer=split(/\&/,
1048: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1049: &homeserver($unam,$udom)));
1050: my $i;
1051: for ($i=0;$i<=$#what;$i++) {
1052: $returnhash{$what[$i]}=&unescape($answer[$i]);
1053: }
1054: return %returnhash;
1.1 albertel 1055: }
1056:
1.263 www 1057: # -------------------------------------------------------------------- New chat
1058:
1059: sub chatsend {
1060: my ($newentry,$anon)=@_;
1061: my $cnum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1062: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1063: my $chome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1064: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1065: &escape($ENV{'user.domain'}.':'.$ENV{'user.name'}.':'.$anon.':'.
1066: &escape($newentry)),$chome);
1.292 www 1067: }
1068:
1069: # ------------------------------------------ Find current version of a resource
1070:
1071: sub getversion {
1072: my $fname=&clutter(shift);
1073: unless ($fname=~/^\/res\//) { return -1; }
1074: return ¤tversion(&filelocation('',$fname));
1075: }
1076:
1077: sub currentversion {
1078: my $fname=shift;
1.440 www 1079: my ($result,$cached)=&is_cached(\%resversioncache,$fname,'resversion',600);
1080: if (defined($cached)) { return $result; }
1.292 www 1081: my $author=$fname;
1082: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1083: my ($udom,$uname)=split(/\//,$author);
1084: my $home=homeserver($uname,$udom);
1085: if ($home eq 'no_host') {
1086: return -1;
1087: }
1088: my $answer=reply("currentversion:$fname",$home);
1089: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1090: return -1;
1091: }
1.440 www 1092: return &do_cache(\%resversioncache,$fname,$answer,'resversion');
1.263 www 1093: }
1094:
1.1 albertel 1095: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 1096:
1.1 albertel 1097: sub subscribe {
1098: my $fname=shift;
1.312 www 1099: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1.532 albertel 1100: $fname=~s/[\n\r]//g;
1.1 albertel 1101: my $author=$fname;
1102: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1103: my ($udom,$uname)=split(/\//,$author);
1104: my $home=homeserver($uname,$udom);
1.335 albertel 1105: if ($home eq 'no_host') {
1106: return 'not_found';
1.1 albertel 1107: }
1108: my $answer=reply("sub:$fname",$home);
1.64 www 1109: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1110: $answer.=' by '.$home;
1111: }
1.1 albertel 1112: return $answer;
1113: }
1114:
1.8 www 1115: # -------------------------------------------------------------- Replicate file
1116:
1117: sub repcopy {
1118: my $filename=shift;
1.23 www 1119: $filename=~s/\/+/\//g;
1.538 albertel 1120: if ($filename=~m|^/home/httpd/html/adm/|) { return OK; }
1121: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return OK; }
1122: if ($filename=~m|^/home/httpd/html/userfiles/| or
1123: $filename=~m|^/*uploaded/|) {
1124: return &repcopy_userfile($filename);
1125: }
1.532 albertel 1126: $filename=~s/[\n\r]//g;
1.8 www 1127: my $transname="$filename.in.transfer";
1.17 www 1128: if ((-e $filename) || (-e $transname)) { return OK; }
1.8 www 1129: my $remoteurl=subscribe($filename);
1.64 www 1130: if ($remoteurl =~ /^con_lost by/) {
1131: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 1132: return HTTP_SERVICE_UNAVAILABLE;
1133: } elsif ($remoteurl eq 'not_found') {
1.441 albertel 1134: #&logthis("Subscribe returned not_found: $filename");
1.8 www 1135: return HTTP_NOT_FOUND;
1.64 www 1136: } elsif ($remoteurl =~ /^rejected by/) {
1137: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 1138: return FORBIDDEN;
1.20 www 1139: } elsif ($remoteurl eq 'directory') {
1140: return OK;
1.8 www 1141: } else {
1.290 www 1142: my $author=$filename;
1143: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1144: my ($udom,$uname)=split(/\//,$author);
1145: my $home=homeserver($uname,$udom);
1146: unless ($home eq $perlvar{'lonHostID'}) {
1.8 www 1147: my @parts=split(/\//,$filename);
1148: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1149: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1150: &logthis("Malconfiguration for replication: $filename");
1151: return HTTP_BAD_REQUEST;
1152: }
1153: my $count;
1154: for ($count=5;$count<$#parts;$count++) {
1155: $path.="/$parts[$count]";
1156: if ((-e $path)!=1) {
1157: mkdir($path,0777);
1158: }
1159: }
1160: my $ua=new LWP::UserAgent;
1161: my $request=new HTTP::Request('GET',"$remoteurl");
1162: my $response=$ua->request($request,$transname);
1163: if ($response->is_error()) {
1164: unlink($transname);
1165: my $message=$response->status_line;
1.12 www 1166: &logthis("<font color=blue>WARNING:"
1167: ." LWP get: $message: $filename</font>");
1.8 www 1168: return HTTP_SERVICE_UNAVAILABLE;
1169: } else {
1.16 www 1170: if ($remoteurl!~/\.meta$/) {
1171: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1172: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1173: if ($mresponse->is_error()) {
1174: unlink($filename.'.meta');
1175: &logthis(
1176: "<font color=yellow>INFO: No metadata: $filename</font>");
1177: }
1178: }
1.8 www 1179: rename($transname,$filename);
1180: return OK;
1181: }
1.290 www 1182: }
1.8 www 1183: }
1.330 www 1184: }
1185:
1186: # ------------------------------------------------ Get server side include body
1187: sub ssi_body {
1.381 albertel 1188: my ($filelink,%form)=@_;
1.330 www 1189: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1.381 albertel 1190: &ssi($filelink,%form));
1.565 albertel 1191: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+// END LON-CAPA Internal\s*(-->)?\s||gs;
1.451 albertel 1192: $output=~s/^.*?\<body[^\>]*\>//si;
1193: $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
1.330 www 1194: return $output;
1.8 www 1195: }
1196:
1.15 www 1197: # --------------------------------------------------------- Server Side Include
1198:
1199: sub ssi {
1200:
1.23 www 1201: my ($fn,%form)=@_;
1.15 www 1202:
1203: my $ua=new LWP::UserAgent;
1.23 www 1204:
1205: my $request;
1206:
1207: if (%form) {
1208: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
1.201 albertel 1209: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1.23 www 1210: } else {
1211: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
1212: }
1213:
1.15 www 1214: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1215: my $response=$ua->request($request);
1216:
1.324 www 1217: return $response->content;
1218: }
1219:
1220: sub externalssi {
1221: my ($url)=@_;
1222: my $ua=new LWP::UserAgent;
1223: my $request=new HTTP::Request('GET',$url);
1224: my $response=$ua->request($request);
1.15 www 1225: return $response->content;
1226: }
1.254 www 1227:
1.492 albertel 1228: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1229:
1230: sub allowuploaded {
1231: my ($srcurl,$url)=@_;
1232: $url=&clutter(&declutter($url));
1233: my $dir=$url;
1234: $dir=~s/\/[^\/]+$//;
1235: my %httpref=();
1236: my $httpurl=&hreflocation('',$url);
1237: $httpref{'httpref.'.$httpurl}=$srcurl;
1238: &Apache::lonnet::appenv(%httpref);
1.254 www 1239: }
1.477 raeburn 1240:
1.478 albertel 1241: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1242: # input: action, courseID, current domain, home server for course, intended
1243: # path to file, source of file.
1.485 raeburn 1244: # output: url to file (if action was uploaddoc),
1245: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1.477 raeburn 1246: #
1.478 albertel 1247: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1248: # course.
1.477 raeburn 1249: #
1.478 albertel 1250: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1251: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1252: # course's home server.
1.477 raeburn 1253: #
1.478 albertel 1254: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1255: # be copied from $source (current location) to
1256: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1257: # and will then be copied to
1258: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1259: # course's home server.
1.485 raeburn 1260: #
1.481 raeburn 1261: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1.485 raeburn 1262: # will be retrived from $ENV{form.uploaddoc} (from DOCS interface) to
1.481 raeburn 1263: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1264: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1265: # in course's home server.
1266:
1.477 raeburn 1267:
1268: sub process_coursefile {
1269: my ($action,$docuname,$docudom,$docuhome,$file,$source)=@_;
1270: my $fetchresult;
1271: if ($action eq 'propagate') {
1272: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file
1273: ,$docuhome);
1.481 raeburn 1274: } else {
1.477 raeburn 1275: my $fetchresult = '';
1276: my $fpath = '';
1277: my $fname = $file;
1.478 albertel 1278: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1.477 raeburn 1279: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1280: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1281: unless ($fpath eq '') {
1.478 albertel 1282: my @parts=split('/',$fpath);
1.477 raeburn 1283: foreach my $part (@parts) {
1284: $filepath.= '/'.$part;
1285: if ((-e $filepath)!=1) {
1286: mkdir($filepath,0777);
1287: }
1288: }
1289: }
1.481 raeburn 1290: if ($action eq 'copy') {
1291: if ($source eq '') {
1292: $fetchresult = 'no source file';
1293: return $fetchresult;
1294: } else {
1295: my $destination = $filepath.'/'.$fname;
1296: rename($source,$destination);
1297: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1298: $docuhome);
1299: }
1300: } elsif ($action eq 'uploaddoc') {
1301: open(my $fh,'>'.$filepath.'/'.$fname);
1302: print $fh $ENV{'form.'.$source};
1303: close($fh);
1.477 raeburn 1304: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1305: $docuhome);
1.481 raeburn 1306: if ($fetchresult eq 'ok') {
1307: return '/uploaded/'.$fpath.'/'.$fname;
1308: } else {
1309: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1310: ' to host '.$docuhome.': '.$fetchresult);
1311: return '/adm/notfound.html';
1312: }
1.477 raeburn 1313: }
1314: }
1.485 raeburn 1315: unless ( $fetchresult eq 'ok') {
1.477 raeburn 1316: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1317: ' to host '.$docuhome.': '.$fetchresult);
1318: }
1319: return $fetchresult;
1320: }
1321:
1.257 www 1322: # --------------- Take an uploaded file and put it into the userfiles directory
1.259 www 1323: # input: name of form element, coursedoc=1 means this is for the course
1.257 www 1324: # output: url of file in userspace
1325:
1.531 albertel 1326: sub clean_filename {
1327: my ($fname)=@_;
1.315 www 1328: # Replace Windows backslashes by forward slashes
1.257 www 1329: $fname=~s/\\/\//g;
1.315 www 1330: # Get rid of everything but the actual filename
1.257 www 1331: $fname=~s/^.*\/([^\/]+)$/$1/;
1.315 www 1332: # Replace spaces by underscores
1333: $fname=~s/\s+/\_/g;
1334: # Replace all other weird characters by nothing
1.317 www 1335: $fname=~s/[^\w\.\-]//g;
1.540 albertel 1336: # Replace all .\d. sequences with _\d. so they no longer look like version
1337: # numbers
1338: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1.531 albertel 1339: return $fname;
1340: }
1341:
1342: sub userfileupload {
1343: my ($formname,$coursedoc,$subdir)=@_;
1344: if (!defined($subdir)) { $subdir='unknown'; }
1345: my $fname=$ENV{'form.'.$formname.'.filename'};
1346: $fname=&clean_filename($fname);
1.315 www 1347: # See if there is anything left
1.257 www 1348: unless ($fname) { return 'error: no uploaded file'; }
1.477 raeburn 1349: chop($ENV{'form.'.$formname});
1.523 raeburn 1350: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1351: my $now = time;
1352: my $filepath = 'tmp/helprequests/'.$now;
1353: my @parts=split(/\//,$filepath);
1354: my $fullpath = $perlvar{'lonDaemons'};
1355: for (my $i=0;$i<@parts;$i++) {
1356: $fullpath .= '/'.$parts[$i];
1357: if ((-e $fullpath)!=1) {
1358: mkdir($fullpath,0777);
1359: }
1360: }
1361: open(my $fh,'>'.$fullpath.'/'.$fname);
1362: print $fh $ENV{'form.'.$formname};
1363: close($fh);
1364: return $fullpath.'/'.$fname;
1365: }
1.258 www 1366: # Create the directory if not present
1.259 www 1367: my $docuname='';
1368: my $docudom='';
1369: my $docuhome='';
1.493 albertel 1370: $fname="$subdir/$fname";
1.259 www 1371: if ($coursedoc) {
1372: $docuname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1373: $docudom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1374: $docuhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.481 raeburn 1375: if ($ENV{'form.folder'} =~ m/^default/) {
1.485 raeburn 1376: return &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname);
1.481 raeburn 1377: } else {
1378: $fname=$ENV{'form.folder'}.'/'.$fname;
1.485 raeburn 1379: return &process_coursefile('uploaddoc',$docuname,$docudom,$docuhome,$fname,$formname);
1.481 raeburn 1380: }
1.259 www 1381: } else {
1382: $docuname=$ENV{'user.name'};
1383: $docudom=$ENV{'user.domain'};
1384: $docuhome=$ENV{'user.home'};
1.485 raeburn 1385: return &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname);
1.259 www 1386: }
1.271 www 1387: }
1388:
1389: sub finishuserfileupload {
1.477 raeburn 1390: my ($docuname,$docudom,$docuhome,$formname,$fname)=@_;
1391: my $path=$docudom.'/'.$docuname.'/';
1.258 www 1392: my $filepath=$perlvar{'lonDocRoot'};
1.494 albertel 1393: my ($fnamepath,$file);
1394: $file=$fname;
1395: if ($fname=~m|/|) {
1396: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1397: $path.=$fnamepath.'/';
1398: }
1.259 www 1399: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
1.258 www 1400: my $count;
1401: for ($count=4;$count<=$#parts;$count++) {
1402: $filepath.="/$parts[$count]";
1403: if ((-e $filepath)!=1) {
1404: mkdir($filepath,0777);
1405: }
1406: }
1407: # Save the file
1408: {
1.500 albertel 1409: #&Apache::lonnet::logthis("Saving to $filepath $file");
1.570 albertel 1410: open(FH,'>'.$filepath.'/'.$file);
1411: print FH $ENV{'form.'.$formname};
1412: close(FH);
1.258 www 1413: }
1.259 www 1414: # Notify homeserver to grep it
1415: #
1.494 albertel 1416: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
1.295 www 1417: if ($fetchresult eq 'ok') {
1.259 www 1418: #
1.258 www 1419: # Return the URL to it
1.494 albertel 1420: return '/uploaded/'.$path.$file;
1.263 www 1421: } else {
1.494 albertel 1422: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
1423: ': '.$fetchresult);
1.263 www 1424: return '/adm/notfound.html';
1425: }
1.493 albertel 1426: }
1427:
1428: sub removeuploadedurl {
1429: my ($url)=@_;
1430: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
1431: return &Apache::lonnet::removeuserfile($uname,$udom,$fname);
1.490 albertel 1432: }
1433:
1434: sub removeuserfile {
1435: my ($docuname,$docudom,$fname)=@_;
1436: my $home=&homeserver($docuname,$docudom);
1437: return &reply("removeuserfile:$docudom/$docuname/$fname",$home);
1.257 www 1438: }
1.15 www 1439:
1.530 albertel 1440: sub mkdiruserfile {
1441: my ($docuname,$docudom,$dir)=@_;
1442: my $home=&homeserver($docuname,$docudom);
1443: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
1444: }
1445:
1.531 albertel 1446: sub renameuserfile {
1447: my ($docuname,$docudom,$old,$new)=@_;
1448: my $home=&homeserver($docuname,$docudom);
1449: return &reply("renameuserfile:$docudom:$docuname:".&escape("$old").':'.
1450: &escape("$new"),$home);
1451: }
1452:
1.14 www 1453: # ------------------------------------------------------------------------- Log
1454:
1455: sub log {
1456: my ($dom,$nam,$hom,$what)=@_;
1.47 www 1457: return critical("log:$dom:$nam:$what",$hom);
1.157 www 1458: }
1459:
1460: # ------------------------------------------------------------------ Course Log
1.352 www 1461: #
1462: # This routine flushes several buffers of non-mission-critical nature
1463: #
1.157 www 1464:
1465: sub flushcourselogs {
1.352 www 1466: &logthis('Flushing log buffers');
1467: #
1468: # course logs
1469: # This is a log of all transactions in a course, which can be used
1470: # for data mining purposes
1471: #
1472: # It also collects the courseid database, which lists last transaction
1473: # times and course titles for all courseids
1474: #
1475: my %courseidbuffer=();
1.191 harris41 1476: foreach (keys %courselogs) {
1.157 www 1477: my $crsid=$_;
1.352 www 1478: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
1.188 www 1479: &escape($courselogs{$crsid}),
1480: $coursehombuf{$crsid}) eq 'ok') {
1.157 www 1481: delete $courselogs{$crsid};
1482: } else {
1483: &logthis('Failed to flush log buffer for '.$crsid);
1484: if (length($courselogs{$crsid})>40000) {
1485: &logthis("<font color=blue>WARNING: Buffer for ".$crsid.
1486: " exceeded maximum size, deleting.</font>");
1487: delete $courselogs{$crsid};
1488: }
1.352 www 1489: }
1490: if ($courseidbuffer{$coursehombuf{$crsid}}) {
1491: $courseidbuffer{$coursehombuf{$crsid}}.='&'.
1.516 raeburn 1492: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1.571 ! raeburn 1493: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid});
1.352 www 1494: } else {
1495: $courseidbuffer{$coursehombuf{$crsid}}=
1.516 raeburn 1496: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1.571 ! raeburn 1497: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid});
! 1498: }
1.191 harris41 1499: }
1.352 www 1500: #
1501: # Write course id database (reverse lookup) to homeserver of courses
1502: # Is used in pickcourse
1503: #
1504: foreach (keys %courseidbuffer) {
1.353 www 1505: &courseidput($hostdom{$_},$courseidbuffer{$_},$_);
1.352 www 1506: }
1507: #
1508: # File accesses
1509: # Writes to the dynamic metadata of resources to get hit counts, etc.
1510: #
1.449 matthew 1511: foreach my $entry (keys(%accesshash)) {
1.458 matthew 1512: if ($entry =~ /___count$/) {
1513: my ($dom,$name);
1514: ($dom,$name,undef)=($entry=~m:___(\w+)/(\w+)/(.*)___count$:);
1515: if (! defined($dom) || $dom eq '' ||
1516: ! defined($name) || $name eq '') {
1517: my $cid = $ENV{'request.course.id'};
1518: $dom = $ENV{'request.'.$cid.'.domain'};
1519: $name = $ENV{'request.'.$cid.'.num'};
1520: }
1.450 matthew 1521: my $value = $accesshash{$entry};
1522: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
1523: my %temphash=($url => $value);
1.449 matthew 1524: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
1525: if ($result eq 'ok') {
1526: delete $accesshash{$entry};
1527: } elsif ($result eq 'unknown_cmd') {
1528: # Target server has old code running on it.
1.450 matthew 1529: my %temphash=($entry => $value);
1.449 matthew 1530: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1531: delete $accesshash{$entry};
1532: }
1533: }
1534: } else {
1.458 matthew 1535: my ($dom,$name) = ($entry=~m:___(\w+)/(\w+)/(.*)___(\w+)$:);
1.450 matthew 1536: my %temphash=($entry => $accesshash{$entry});
1.449 matthew 1537: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1538: delete $accesshash{$entry};
1539: }
1.185 www 1540: }
1.191 harris41 1541: }
1.352 www 1542: #
1543: # Roles
1544: # Reverse lookup of user roles for course faculty/staff and co-authorship
1545: #
1.349 www 1546: foreach (keys %userrolehash) {
1547: my $entry=$_;
1.351 www 1548: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
1.349 www 1549: split(/\:/,$entry);
1550: if (&Apache::lonnet::put('nohist_userroles',
1.351 www 1551: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
1.349 www 1552: $rudom,$runame) eq 'ok') {
1553: delete $userrolehash{$entry};
1554: }
1555: }
1.186 www 1556: $dumpcount++;
1.157 www 1557: }
1558:
1559: sub courselog {
1560: my $what=shift;
1.158 www 1561: $what=time.':'.$what;
1.157 www 1562: unless ($ENV{'request.course.id'}) { return ''; }
1.188 www 1563: $coursedombuf{$ENV{'request.course.id'}}=
1.352 www 1564: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1565: $coursenumbuf{$ENV{'request.course.id'}}=
1.188 www 1566: $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1567: $coursehombuf{$ENV{'request.course.id'}}=
1568: $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.352 www 1569: $coursedescrbuf{$ENV{'request.course.id'}}=
1570: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.516 raeburn 1571: $courseinstcodebuf{$ENV{'request.course.id'}}=
1572: $ENV{'course.'.$ENV{'request.course.id'}.'.internal.coursecode'};
1.571 ! raeburn 1573: $courseownerbuf{$ENV{'request.course.id'}}=
! 1574: $ENV{'course.'.$ENV{'request.course.id'}.'.internal.courseowner'};
1.157 www 1575: if (defined $courselogs{$ENV{'request.course.id'}}) {
1576: $courselogs{$ENV{'request.course.id'}}.='&'.$what;
1577: } else {
1578: $courselogs{$ENV{'request.course.id'}}.=$what;
1579: }
1.458 matthew 1580: if (length($courselogs{$ENV{'request.course.id'}})>4048) {
1.157 www 1581: &flushcourselogs();
1582: }
1.158 www 1583: }
1584:
1585: sub courseacclog {
1586: my $fnsymb=shift;
1587: unless ($ENV{'request.course.id'}) { return ''; }
1588: my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.408 www 1589: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|page)$/) {
1.187 www 1590: $what.=':POST';
1.191 harris41 1591: foreach (keys %ENV) {
1.158 www 1592: if ($_=~/^form\.(.*)/) {
1593: $what.=':'.$1.'='.$ENV{$_};
1594: }
1.191 harris41 1595: }
1.158 www 1596: }
1597: &courselog($what);
1.149 www 1598: }
1599:
1.185 www 1600: sub countacc {
1601: my $url=&declutter(shift);
1.458 matthew 1602: return if (! defined($url) || $url eq '');
1.185 www 1603: unless ($ENV{'request.course.id'}) { return ''; }
1604: $accesshash{$ENV{'request.course.id'}.'___'.$url.'___course'}=1;
1.281 www 1605: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
1.450 matthew 1606: $accesshash{$key}++;
1.185 www 1607: }
1.349 www 1608:
1.361 www 1609: sub linklog {
1610: my ($from,$to)=@_;
1611: $from=&declutter($from);
1612: $to=&declutter($to);
1613: $accesshash{$from.'___'.$to.'___comefrom'}=1;
1614: $accesshash{$to.'___'.$from.'___goto'}=1;
1615: }
1616:
1.349 www 1617: sub userrolelog {
1618: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
1619: if (($trole=~/^ca/) || ($trole=~/^in/) ||
1620: ($trole=~/^cc/) || ($trole=~/^ep/) ||
1.469 www 1621: ($trole=~/^cr/) || ($trole=~/^ta/)) {
1.350 www 1622: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
1623: $userrolehash
1624: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
1.349 www 1625: =$tend.':'.$tstart;
1626: }
1.351 www 1627: }
1628:
1629: sub get_course_adv_roles {
1630: my $cid=shift;
1631: $cid=$ENV{'request.course.id'} unless (defined($cid));
1632: my %coursehash=&coursedescription($cid);
1.470 www 1633: my %nothide=();
1634: foreach (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
1635: $nothide{join(':',split(/[\@\:]/,$_))}=1;
1636: }
1.351 www 1637: my %returnhash=();
1638: my %dumphash=
1639: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
1640: my $now=time;
1641: foreach (keys %dumphash) {
1642: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1643: if (($tstart) && ($tstart<0)) { next; }
1644: if (($tend) && ($tend<$now)) { next; }
1645: if (($tstart) && ($now<$tstart)) { next; }
1646: my ($role,$username,$domain,$section)=split(/\:/,$_);
1.470 www 1647: if ((&privileged($username,$domain)) &&
1648: (!$nothide{$username.':'.$domain})) { next; }
1.351 www 1649: my $key=&plaintext($role);
1650: if ($section) { $key.=' (Sec/Grp '.$section.')'; }
1651: if ($returnhash{$key}) {
1652: $returnhash{$key}.=','.$username.':'.$domain;
1653: } else {
1654: $returnhash{$key}=$username.':'.$domain;
1655: }
1.400 www 1656: }
1657: return %returnhash;
1658: }
1659:
1660: sub get_my_roles {
1661: my ($uname,$udom)=@_;
1662: unless (defined($uname)) { $uname=$ENV{'user.name'}; }
1663: unless (defined($udom)) { $udom=$ENV{'user.domain'}; }
1664: my %dumphash=
1665: &dump('nohist_userroles',$udom,$uname);
1666: my %returnhash=();
1667: my $now=time;
1668: foreach (keys %dumphash) {
1669: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1670: if (($tstart) && ($tstart<0)) { next; }
1671: if (($tend) && ($tend<$now)) { next; }
1672: if (($tstart) && ($now<$tstart)) { next; }
1673: my ($role,$username,$domain,$section)=split(/\:/,$_);
1674: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
1.373 www 1675: }
1676: return %returnhash;
1.399 www 1677: }
1678:
1679: # ----------------------------------------------------- Frontpage Announcements
1680: #
1681: #
1682:
1683: sub postannounce {
1684: my ($server,$text)=@_;
1685: unless (&allowed('psa',$hostdom{$server})) { return 'refused'; }
1686: unless ($text=~/\w/) { $text=''; }
1687: return &reply('setannounce:'.&escape($text),$server);
1688: }
1689:
1690: sub getannounce {
1.448 albertel 1691:
1692: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
1.399 www 1693: my $announcement='';
1694: while (<$fh>) { $announcement .=$_; }
1.448 albertel 1695: close($fh);
1.399 www 1696: if ($announcement=~/\w/) {
1697: return
1698: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
1.518 albertel 1699: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
1.399 www 1700: } else {
1701: return '';
1702: }
1703: } else {
1704: return '';
1705: }
1.351 www 1706: }
1.353 www 1707:
1708: # ---------------------------------------------------------- Course ID routines
1709: # Deal with domain's nohist_courseid.db files
1710: #
1711:
1712: sub courseidput {
1713: my ($domain,$what,$coursehome)=@_;
1714: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
1715: }
1716:
1717: sub courseiddump {
1.571 ! raeburn 1718: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$hostidflag,$hostidref)=@_;
1.353 www 1719: my %returnhash=();
1.355 www 1720: unless ($domfilter) { $domfilter=''; }
1.353 www 1721: foreach my $tryserver (keys %libserv) {
1.511 raeburn 1722: if ( ($hostidflag == 1 && grep/^$tryserver$/,@{$hostidref}) || (!defined($hostidflag)) ) {
1.506 raeburn 1723: if ((!$domfilter) || ($hostdom{$tryserver} eq $domfilter)) {
1724: foreach (
1725: split(/\&/,&reply('courseiddump:'.$hostdom{$tryserver}.':'.
1.571 ! raeburn 1726: $sincefilter.':'.&escape($descfilter).':'.
! 1727: &escape($instcodefilter).':'.&escape($ownerfilter),
1.354 www 1728: $tryserver))) {
1.506 raeburn 1729: my ($key,$value)=split(/\=/,$_);
1730: if (($key) && ($value)) {
1.516 raeburn 1731: $returnhash{&unescape($key)}=$value;
1.506 raeburn 1732: }
1.353 www 1733: }
1734: }
1735: }
1736: }
1737: return %returnhash;
1738: }
1739:
1740: #
1.149 www 1741: # ----------------------------------------------------------- Check out an item
1742:
1.504 albertel 1743: sub get_first_access {
1744: my ($type,$argsymb)=@_;
1745: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1746: if ($argsymb) { $symb=$argsymb; }
1747: my ($map,$id,$res)=&decode_symb($symb);
1748: if ($type eq 'map') { $res=$map; }
1749: my %times=&get('firstaccesstimes',[$res],$udom,$uname);
1750: return $times{$res};
1751: }
1752:
1753: sub set_first_access {
1754: my ($type)=@_;
1755: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1756: my ($map,$id,$res)=&decode_symb($symb);
1757: if ($type eq 'map') { $res=$map; }
1.505 albertel 1758: my $firstaccess=&get_first_access($type);
1759: if (!$firstaccess) {
1760: return &put('firstaccesstimes',{$res=>time},$udom,$uname);
1761: }
1762: return 'already_set';
1.504 albertel 1763: }
1764:
1.149 www 1765: sub checkout {
1766: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1767: my $now=time;
1768: my $lonhost=$perlvar{'lonHostID'};
1769: my $infostr=&escape(
1.234 www 1770: 'CHECKOUTTOKEN&'.
1.149 www 1771: $tuname.'&'.
1772: $tudom.'&'.
1773: $tcrsid.'&'.
1774: $symb.'&'.
1775: $now.'&'.$ENV{'REMOTE_ADDR'});
1776: my $token=&reply('tmpput:'.$infostr,$lonhost);
1.151 www 1777: if ($token=~/^error\:/) {
1778: &logthis("<font color=blue>WARNING: ".
1779: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
1780: "</font>");
1781: return '';
1782: }
1783:
1.149 www 1784: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
1785: $token=~tr/a-z/A-Z/;
1786:
1.153 www 1787: my %infohash=('resource.0.outtoken' => $token,
1788: 'resource.0.checkouttime' => $now,
1789: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
1.149 www 1790:
1791: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1792: return '';
1.151 www 1793: } else {
1794: &logthis("<font color=blue>WARNING: ".
1795: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
1796: "</font>");
1.149 www 1797: }
1798:
1799: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1800: &escape('Checkout '.$infostr.' - '.
1801: $token)) ne 'ok') {
1802: return '';
1.151 www 1803: } else {
1804: &logthis("<font color=blue>WARNING: ".
1805: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
1806: "</font>");
1.149 www 1807: }
1.151 www 1808: return $token;
1.149 www 1809: }
1810:
1811: # ------------------------------------------------------------ Check in an item
1812:
1813: sub checkin {
1814: my $token=shift;
1.150 www 1815: my $now=time;
1816: my ($ta,$tb,$lonhost)=split(/\*/,$token);
1817: $lonhost=~tr/A-Z/a-z/;
1818: my $dtoken=$ta.'_'.$hostip{$lonhost}.'_'.$tb;
1819: $dtoken=~s/\W/\_/g;
1.234 www 1820: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
1.150 www 1821: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
1822:
1.154 www 1823: unless (($tuname) && ($tudom)) {
1824: &logthis('Check in '.$token.' ('.$dtoken.') failed');
1825: return '';
1826: }
1827:
1828: unless (&allowed('mgr',$tcrsid)) {
1829: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
1830: $ENV{'user.name'}.' - '.$ENV{'user.domain'});
1831: return '';
1832: }
1833:
1.153 www 1834: my %infohash=('resource.0.intoken' => $token,
1835: 'resource.0.checkintime' => $now,
1836: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
1.150 www 1837:
1838: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1839: return '';
1840: }
1841:
1842: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1843: &escape('Checkin - '.$token)) ne 'ok') {
1844: return '';
1845: }
1846:
1847: return ($symb,$tuname,$tudom,$tcrsid);
1.110 www 1848: }
1849:
1850: # --------------------------------------------- Set Expire Date for Spreadsheet
1851:
1852: sub expirespread {
1853: my ($uname,$udom,$stype,$usymb)=@_;
1854: my $cid=$ENV{'request.course.id'};
1855: if ($cid) {
1856: my $now=time;
1857: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
1858: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1859: $ENV{'course.'.$cid.'.num'}.
1860: ':nohist_expirationdates:'.
1861: &escape($key).'='.$now,
1862: $ENV{'course.'.$cid.'.home'})
1863: }
1864: return 'ok';
1.14 www 1865: }
1866:
1.109 www 1867: # ----------------------------------------------------- Devalidate Spreadsheets
1868:
1869: sub devalidate {
1.325 www 1870: my ($symb,$uname,$udom)=@_;
1.109 www 1871: my $cid=$ENV{'request.course.id'};
1872: if ($cid) {
1.391 matthew 1873: # delete the stored spreadsheets for
1874: # - the student level sheet of this user in course's homespace
1875: # - the assessment level sheet for this resource
1876: # for this user in user's homespace
1.553 albertel 1877: # - current conditional state info
1.325 www 1878: my $key=$uname.':'.$udom.':';
1.109 www 1879: my $status=
1.299 matthew 1880: &del('nohist_calculatedsheets',
1.391 matthew 1881: [$key.'studentcalc:'],
1.133 albertel 1882: $ENV{'course.'.$cid.'.domain'},
1883: $ENV{'course.'.$cid.'.num'})
1884: .' '.
1885: &del('nohist_calculatedsheets_'.$cid,
1.391 matthew 1886: [$key.'assesscalc:'.$symb],$udom,$uname);
1.109 www 1887: unless ($status eq 'ok ok') {
1888: &logthis('Could not devalidate spreadsheet '.
1.325 www 1889: $uname.' at '.$udom.' for '.
1.109 www 1890: $symb.': '.$status);
1.133 albertel 1891: }
1.553 albertel 1892: &delenv('user.state.'.$cid);
1.109 www 1893: }
1894: }
1895:
1.265 albertel 1896: sub get_scalar {
1897: my ($string,$end) = @_;
1898: my $value;
1899: if ($$string =~ s/^([^&]*?)($end)/$2/) {
1900: $value = $1;
1901: } elsif ($$string =~ s/^([^&]*?)&//) {
1902: $value = $1;
1903: }
1904: return &unescape($value);
1905: }
1906:
1907: sub array2str {
1908: my (@array) = @_;
1909: my $result=&arrayref2str(\@array);
1910: $result=~s/^__ARRAY_REF__//;
1911: $result=~s/__END_ARRAY_REF__$//;
1912: return $result;
1913: }
1914:
1.204 albertel 1915: sub arrayref2str {
1916: my ($arrayref) = @_;
1.265 albertel 1917: my $result='__ARRAY_REF__';
1.204 albertel 1918: foreach my $elem (@$arrayref) {
1.265 albertel 1919: if(ref($elem) eq 'ARRAY') {
1920: $result.=&arrayref2str($elem).'&';
1921: } elsif(ref($elem) eq 'HASH') {
1922: $result.=&hashref2str($elem).'&';
1923: } elsif(ref($elem)) {
1924: #print("Got a ref of ".(ref($elem))." skipping.");
1.204 albertel 1925: } else {
1926: $result.=&escape($elem).'&';
1927: }
1928: }
1929: $result=~s/\&$//;
1.265 albertel 1930: $result .= '__END_ARRAY_REF__';
1.204 albertel 1931: return $result;
1932: }
1933:
1.168 albertel 1934: sub hash2str {
1.204 albertel 1935: my (%hash) = @_;
1936: my $result=&hashref2str(\%hash);
1.265 albertel 1937: $result=~s/^__HASH_REF__//;
1938: $result=~s/__END_HASH_REF__$//;
1.204 albertel 1939: return $result;
1940: }
1941:
1942: sub hashref2str {
1943: my ($hashref)=@_;
1.265 albertel 1944: my $result='__HASH_REF__';
1.495 albertel 1945: foreach (sort(keys(%$hashref))) {
1.204 albertel 1946: if (ref($_) eq 'ARRAY') {
1.265 albertel 1947: $result.=&arrayref2str($_).'=';
1.204 albertel 1948: } elsif (ref($_) eq 'HASH') {
1.265 albertel 1949: $result.=&hashref2str($_).'=';
1.204 albertel 1950: } elsif (ref($_)) {
1.265 albertel 1951: $result.='=';
1952: #print("Got a ref of ".(ref($_))." skipping.");
1.204 albertel 1953: } else {
1.265 albertel 1954: if ($_) {$result.=&escape($_).'=';} else { last; }
1.204 albertel 1955: }
1956:
1.265 albertel 1957: if(ref($hashref->{$_}) eq 'ARRAY') {
1958: $result.=&arrayref2str($hashref->{$_}).'&';
1959: } elsif(ref($hashref->{$_}) eq 'HASH') {
1960: $result.=&hashref2str($hashref->{$_}).'&';
1961: } elsif(ref($hashref->{$_})) {
1962: $result.='&';
1963: #print("Got a ref of ".(ref($hashref->{$_}))." skipping.");
1.204 albertel 1964: } else {
1.265 albertel 1965: $result.=&escape($hashref->{$_}).'&';
1.204 albertel 1966: }
1967: }
1.168 albertel 1968: $result=~s/\&$//;
1.265 albertel 1969: $result .= '__END_HASH_REF__';
1.168 albertel 1970: return $result;
1971: }
1972:
1973: sub str2hash {
1.265 albertel 1974: my ($string)=@_;
1975: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
1976: return %$hash;
1977: }
1978:
1979: sub str2hashref {
1.168 albertel 1980: my ($string) = @_;
1.265 albertel 1981:
1982: my %hash;
1983:
1984: if($string !~ /^__HASH_REF__/) {
1985: if (! ($string eq '' || !defined($string))) {
1986: $hash{'error'}='Not hash reference';
1987: }
1988: return (\%hash, $string);
1989: }
1990:
1991: $string =~ s/^__HASH_REF__//;
1992:
1993: while($string !~ /^__END_HASH_REF__/) {
1994: #key
1995: my $key='';
1996: if($string =~ /^__HASH_REF__/) {
1997: ($key, $string)=&str2hashref($string);
1998: if(defined($key->{'error'})) {
1999: $hash{'error'}='Bad data';
2000: return (\%hash, $string);
2001: }
2002: } elsif($string =~ /^__ARRAY_REF__/) {
2003: ($key, $string)=&str2arrayref($string);
2004: if($key->[0] eq 'Array reference error') {
2005: $hash{'error'}='Bad data';
2006: return (\%hash, $string);
2007: }
2008: } else {
2009: $string =~ s/^(.*?)=//;
1.267 albertel 2010: $key=&unescape($1);
1.265 albertel 2011: }
2012: $string =~ s/^=//;
2013:
2014: #value
2015: my $value='';
2016: if($string =~ /^__HASH_REF__/) {
2017: ($value, $string)=&str2hashref($string);
2018: if(defined($value->{'error'})) {
2019: $hash{'error'}='Bad data';
2020: return (\%hash, $string);
2021: }
2022: } elsif($string =~ /^__ARRAY_REF__/) {
2023: ($value, $string)=&str2arrayref($string);
2024: if($value->[0] eq 'Array reference error') {
2025: $hash{'error'}='Bad data';
2026: return (\%hash, $string);
2027: }
2028: } else {
2029: $value=&get_scalar(\$string,'__END_HASH_REF__');
2030: }
2031: $string =~ s/^&//;
2032:
2033: $hash{$key}=$value;
1.204 albertel 2034: }
1.265 albertel 2035:
2036: $string =~ s/^__END_HASH_REF__//;
2037:
2038: return (\%hash, $string);
1.204 albertel 2039: }
2040:
2041: sub str2array {
1.265 albertel 2042: my ($string)=@_;
2043: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
2044: return @$array;
2045: }
2046:
2047: sub str2arrayref {
1.204 albertel 2048: my ($string) = @_;
1.265 albertel 2049: my @array;
2050:
2051: if($string !~ /^__ARRAY_REF__/) {
2052: if (! ($string eq '' || !defined($string))) {
2053: $array[0]='Array reference error';
2054: }
2055: return (\@array, $string);
2056: }
2057:
2058: $string =~ s/^__ARRAY_REF__//;
2059:
2060: while($string !~ /^__END_ARRAY_REF__/) {
2061: my $value='';
2062: if($string =~ /^__HASH_REF__/) {
2063: ($value, $string)=&str2hashref($string);
2064: if(defined($value->{'error'})) {
2065: $array[0] ='Array reference error';
2066: return (\@array, $string);
2067: }
2068: } elsif($string =~ /^__ARRAY_REF__/) {
2069: ($value, $string)=&str2arrayref($string);
2070: if($value->[0] eq 'Array reference error') {
2071: $array[0] ='Array reference error';
2072: return (\@array, $string);
2073: }
2074: } else {
2075: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
2076: }
2077: $string =~ s/^&//;
2078:
2079: push(@array, $value);
1.191 harris41 2080: }
1.265 albertel 2081:
2082: $string =~ s/^__END_ARRAY_REF__//;
2083:
2084: return (\@array, $string);
1.168 albertel 2085: }
2086:
1.167 albertel 2087: # -------------------------------------------------------------------Temp Store
2088:
1.168 albertel 2089: sub tmpreset {
2090: my ($symb,$namespace,$domain,$stuname) = @_;
2091: if (!$symb) {
2092: $symb=&symbread();
1.380 albertel 2093: if (!$symb) { $symb= $ENV{'request.url'}; }
1.168 albertel 2094: }
2095: $symb=escape($symb);
2096:
2097: if (!$namespace) { $namespace=$ENV{'request.state'}; }
2098: $namespace=~s/\//\_/g;
2099: $namespace=~s/\W//g;
2100:
2101: #FIXME needs to do something for /pub resources
2102: if (!$domain) { $domain=$ENV{'user.domain'}; }
2103: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2104: my $path=$perlvar{'lonDaemons'}.'/tmp';
2105: my %hash;
2106: if (tie(%hash,'GDBM_File',
2107: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2108: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2109: foreach my $key (keys %hash) {
1.180 albertel 2110: if ($key=~ /:$symb/) {
1.168 albertel 2111: delete($hash{$key});
2112: }
2113: }
2114: }
2115: }
2116:
1.167 albertel 2117: sub tmpstore {
1.168 albertel 2118: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2119:
2120: if (!$symb) {
2121: $symb=&symbread();
2122: if (!$symb) { $symb= $ENV{'request.url'}; }
2123: }
2124: $symb=escape($symb);
2125:
2126: if (!$namespace) {
2127: # I don't think we would ever want to store this for a course.
2128: # it seems this will only be used if we don't have a course.
2129: #$namespace=$ENV{'request.course.id'};
2130: #if (!$namespace) {
2131: $namespace=$ENV{'request.state'};
2132: #}
2133: }
2134: $namespace=~s/\//\_/g;
2135: $namespace=~s/\W//g;
2136: #FIXME needs to do something for /pub resources
2137: if (!$domain) { $domain=$ENV{'user.domain'}; }
2138: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2139: my $now=time;
2140: my %hash;
2141: my $path=$perlvar{'lonDaemons'}.'/tmp';
2142: if (tie(%hash,'GDBM_File',
2143: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2144: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2145: $hash{"version:$symb"}++;
2146: my $version=$hash{"version:$symb"};
2147: my $allkeys='';
2148: foreach my $key (keys(%$storehash)) {
2149: $allkeys.=$key.':';
2150: $hash{"$version:$symb:$key"}=$$storehash{$key};
2151: }
2152: $hash{"$version:$symb:timestamp"}=$now;
2153: $allkeys.='timestamp';
2154: $hash{"$version:keys:$symb"}=$allkeys;
2155: if (untie(%hash)) {
2156: return 'ok';
2157: } else {
2158: return "error:$!";
2159: }
2160: } else {
2161: return "error:$!";
2162: }
2163: }
1.167 albertel 2164:
1.168 albertel 2165: # -----------------------------------------------------------------Temp Restore
1.167 albertel 2166:
1.168 albertel 2167: sub tmprestore {
2168: my ($symb,$namespace,$domain,$stuname) = @_;
1.167 albertel 2169:
1.168 albertel 2170: if (!$symb) {
2171: $symb=&symbread();
2172: if (!$symb) { $symb= $ENV{'request.url'}; }
2173: }
2174: $symb=escape($symb);
2175:
2176: if (!$namespace) { $namespace=$ENV{'request.state'}; }
2177: #FIXME needs to do something for /pub resources
2178: if (!$domain) { $domain=$ENV{'user.domain'}; }
2179: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2180:
2181: my %returnhash;
2182: $namespace=~s/\//\_/g;
2183: $namespace=~s/\W//g;
2184: my %hash;
2185: my $path=$perlvar{'lonDaemons'}.'/tmp';
2186: if (tie(%hash,'GDBM_File',
2187: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2188: &GDBM_READER(),0640)) {
1.168 albertel 2189: my $version=$hash{"version:$symb"};
2190: $returnhash{'version'}=$version;
2191: my $scope;
2192: for ($scope=1;$scope<=$version;$scope++) {
2193: my $vkeys=$hash{"$scope:keys:$symb"};
2194: my @keys=split(/:/,$vkeys);
2195: my $key;
2196: $returnhash{"$scope:keys"}=$vkeys;
2197: foreach $key (@keys) {
2198: $returnhash{"$scope:$key"}=$hash{"$scope:$symb:$key"};
2199: $returnhash{"$key"}=$hash{"$scope:$symb:$key"};
1.167 albertel 2200: }
2201: }
1.168 albertel 2202: if (!(untie(%hash))) {
2203: return "error:$!";
2204: }
2205: } else {
2206: return "error:$!";
2207: }
2208: return %returnhash;
1.167 albertel 2209: }
2210:
1.9 www 2211: # ----------------------------------------------------------------------- Store
2212:
2213: sub store {
1.124 www 2214: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2215: my $home='';
2216:
1.168 albertel 2217: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2218:
1.213 www 2219: $symb=&symbclean($symb);
1.122 albertel 2220: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2221:
1.325 www 2222: if (!$domain) { $domain=$ENV{'user.domain'}; }
2223: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2224:
2225: &devalidate($symb,$stuname,$domain);
1.109 www 2226:
2227: $symb=escape($symb);
1.187 www 2228: if (!$namespace) {
2229: unless ($namespace=$ENV{'request.course.id'}) {
2230: return '';
2231: }
2232: }
1.122 albertel 2233: if (!$home) { $home=$ENV{'user.home'}; }
1.447 www 2234:
2235: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2236: $$storehash{'host'}=$perlvar{'lonHostID'};
2237:
1.12 www 2238: my $namevalue='';
1.191 harris41 2239: foreach (keys %$storehash) {
1.122 albertel 2240: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 2241: }
1.12 www 2242: $namevalue=~s/\&$//;
1.187 www 2243: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
1.124 www 2244: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.9 www 2245: }
2246:
1.47 www 2247: # -------------------------------------------------------------- Critical Store
2248:
2249: sub cstore {
1.124 www 2250: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2251: my $home='';
2252:
1.168 albertel 2253: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2254:
1.213 www 2255: $symb=&symbclean($symb);
1.122 albertel 2256: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2257:
1.325 www 2258: if (!$domain) { $domain=$ENV{'user.domain'}; }
2259: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2260:
2261: &devalidate($symb,$stuname,$domain);
1.109 www 2262:
2263: $symb=escape($symb);
1.187 www 2264: if (!$namespace) {
2265: unless ($namespace=$ENV{'request.course.id'}) {
2266: return '';
2267: }
2268: }
1.122 albertel 2269: if (!$home) { $home=$ENV{'user.home'}; }
1.447 www 2270:
2271: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2272: $$storehash{'host'}=$perlvar{'lonHostID'};
1.122 albertel 2273:
1.47 www 2274: my $namevalue='';
1.191 harris41 2275: foreach (keys %$storehash) {
1.122 albertel 2276: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 2277: }
1.47 www 2278: $namevalue=~s/\&$//;
1.187 www 2279: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
1.188 www 2280: return critical
2281: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.47 www 2282: }
2283:
1.9 www 2284: # --------------------------------------------------------------------- Restore
2285:
2286: sub restore {
1.124 www 2287: my ($symb,$namespace,$domain,$stuname) = @_;
2288: my $home='';
2289:
1.168 albertel 2290: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2291:
1.122 albertel 2292: if (!$symb) {
2293: unless ($symb=escape(&symbread())) { return ''; }
2294: } else {
1.213 www 2295: $symb=&escape(&symbclean($symb));
1.122 albertel 2296: }
1.188 www 2297: if (!$namespace) {
2298: unless ($namespace=$ENV{'request.course.id'}) {
2299: return '';
2300: }
2301: }
1.122 albertel 2302: if (!$domain) { $domain=$ENV{'user.domain'}; }
2303: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2304: if (!$home) { $home=$ENV{'user.home'}; }
2305: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
2306:
1.12 www 2307: my %returnhash=();
1.191 harris41 2308: foreach (split(/\&/,$answer)) {
1.12 www 2309: my ($name,$value)=split(/\=/,$_);
2310: $returnhash{&unescape($name)}=&unescape($value);
1.191 harris41 2311: }
1.75 www 2312: my $version;
2313: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.191 harris41 2314: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1.75 www 2315: $returnhash{$_}=$returnhash{$version.':'.$_};
1.191 harris41 2316: }
1.75 www 2317: }
1.13 www 2318: return %returnhash;
1.34 www 2319: }
2320:
2321: # ---------------------------------------------------------- Course Description
2322:
2323: sub coursedescription {
2324: my $courseid=shift;
2325: $courseid=~s/^\///;
1.49 www 2326: $courseid=~s/\_/\//g;
1.34 www 2327: my ($cdomain,$cnum)=split(/\//,$courseid);
1.129 albertel 2328: my $chome=&homeserver($cnum,$cdomain);
1.302 albertel 2329: my $normalid=$cdomain.'_'.$cnum;
2330: # need to always cache even if we get errors otherwise we keep
2331: # trying and trying and trying to get the course description.
2332: my %envhash=();
2333: my %returnhash=();
2334: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.34 www 2335: if ($chome ne 'no_host') {
1.302 albertel 2336: %returnhash=&dump('environment',$cdomain,$cnum);
1.129 albertel 2337: if (!exists($returnhash{'con_lost'})) {
2338: $returnhash{'home'}= $chome;
2339: $returnhash{'domain'} = $cdomain;
2340: $returnhash{'num'} = $cnum;
1.130 albertel 2341: while (my ($name,$value) = each %returnhash) {
1.53 www 2342: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.129 albertel 2343: }
1.270 www 2344: $returnhash{'url'}=&clutter($returnhash{'url'});
1.34 www 2345: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 2346: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.60 www 2347: $envhash{'course.'.$normalid.'.home'}=$chome;
2348: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
2349: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.34 www 2350: }
2351: }
1.302 albertel 2352: &appenv(%envhash);
2353: return %returnhash;
1.461 www 2354: }
2355:
2356: # -------------------------------------------------See if a user is privileged
2357:
2358: sub privileged {
2359: my ($username,$domain)=@_;
2360: my $rolesdump=&reply("dump:$domain:$username:roles",
2361: &homeserver($username,$domain));
2362: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
2363: my $now=time;
2364: if ($rolesdump ne '') {
2365: foreach (split(/&/,$rolesdump)) {
2366: if ($_!~/^rolesdef\&/) {
2367: my ($area,$role)=split(/=/,$_);
2368: $area=~s/\_\w\w$//;
2369: my ($trole,$tend,$tstart)=split(/_/,$role);
2370: if (($trole eq 'dc') || ($trole eq 'su')) {
2371: my $active=1;
2372: if ($tend) {
2373: if ($tend<$now) { $active=0; }
2374: }
2375: if ($tstart) {
2376: if ($tstart>$now) { $active=0; }
2377: }
2378: if ($active) { return 1; }
2379: }
2380: }
2381: }
2382: }
2383: return 0;
1.9 www 2384: }
1.1 albertel 2385:
1.103 harris41 2386: # -------------------------------------------------------- Get user privileges
1.11 www 2387:
2388: sub rolesinit {
2389: my ($domain,$username,$authhost)=@_;
2390: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 2391: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 2392: my %allroles=();
2393: my $now=time;
1.21 www 2394: my $userroles="user.login.time=$now\n";
1.11 www 2395:
2396: if ($rolesdump ne '') {
1.191 harris41 2397: foreach (split(/&/,$rolesdump)) {
1.21 www 2398: if ($_!~/^rolesdef\&/) {
1.11 www 2399: my ($area,$role)=split(/=/,$_);
1.21 www 2400: $area=~s/\_\w\w$//;
1.11 www 2401: my ($trole,$tend,$tstart)=split(/_/,$role);
1.567 raeburn 2402: $userroles.=&set_arearole($trole,$area,$tstart,$tend);
2403: if (($tend!=0) && ($tend<$now)) { $trole=''; }
2404: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
1.11 www 2405: if (($area ne '') && ($trole ne '')) {
1.347 albertel 2406: my $spec=$trole.'.'.$area;
2407: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
2408: if ($trole =~ /^cr\//) {
1.567 raeburn 2409: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
1.347 albertel 2410: } else {
1.567 raeburn 2411: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
1.347 albertel 2412: }
1.12 www 2413: }
2414: }
1.191 harris41 2415: }
1.567 raeburn 2416: my ($author,$adv) = &set_userprivs(\$userroles,\%allroles);
1.128 www 2417: $userroles.='user.adv='.$adv."\n".
2418: 'user.author='.$author."\n";
1.126 www 2419: $ENV{'user.adv'}=$adv;
1.11 www 2420: }
2421: return $userroles;
2422: }
2423:
1.567 raeburn 2424: sub set_arearole {
2425: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
2426: # log the associated role with the area
2427: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
2428: return 'user.role.'.$trole.'.'.$area.'='.$tstart.'.'.$tend."\n";
2429: }
2430:
2431: sub custom_roleprivs {
2432: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
2433: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
2434: my $homsvr=homeserver($rauthor,$rdomain);
2435: if ($hostname{$homsvr} ne '') {
2436: my ($rdummy,$roledef)=
2437: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
2438: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
2439: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
2440: if (defined($syspriv)) {
2441: $$allroles{'cm./'}.=':'.$syspriv;
2442: $$allroles{$spec.'./'}.=':'.$syspriv;
2443: }
2444: if ($tdomain ne '') {
2445: if (defined($dompriv)) {
2446: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
2447: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
2448: }
2449: if (($trest ne '') && (defined($coursepriv))) {
2450: $$allroles{'cm.'.$area}.=':'.$coursepriv;
2451: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
2452: }
2453: }
2454: }
2455: }
2456: }
2457:
2458:
2459: sub standard_roleprivs {
2460: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
2461: if (defined($pr{$trole.':s'})) {
2462: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
2463: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
2464: }
2465: if ($tdomain ne '') {
2466: if (defined($pr{$trole.':d'})) {
2467: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2468: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2469: }
2470: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
2471: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
2472: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
2473: }
2474: }
2475: }
2476:
2477: sub set_userprivs {
2478: my ($userroles,$allroles) = @_;
2479: my $author=0;
2480: my $adv=0;
2481: foreach (keys %{$allroles}) {
2482: my %thesepriv=();
2483: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
2484: foreach (split(/:/,$$allroles{$_})) {
2485: if ($_ ne '') {
2486: my ($privilege,$restrictions)=split(/&/,$_);
2487: if ($restrictions eq '') {
2488: $thesepriv{$privilege}='F';
2489: } elsif ($thesepriv{$privilege} ne 'F') {
2490: $thesepriv{$privilege}.=$restrictions;
2491: }
2492: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
2493: }
2494: }
2495: my $thesestr='';
2496: foreach (keys %thesepriv) { $thesestr.=':'.$_.'&'.$thesepriv{$_}; }
2497: $$userroles.='user.priv.'.$_.'='.$thesestr."\n";
2498: }
2499: return ($author,$adv);
2500: }
2501:
1.12 www 2502: # --------------------------------------------------------------- get interface
2503:
2504: sub get {
1.131 albertel 2505: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2506: my $items='';
1.191 harris41 2507: foreach (@$storearr) {
1.12 www 2508: $items.=escape($_).'&';
1.191 harris41 2509: }
1.12 www 2510: $items=~s/\&$//;
1.131 albertel 2511: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2512: if (!$uname) { $uname=$ENV{'user.name'}; }
2513: my $uhome=&homeserver($uname,$udomain);
2514:
1.133 albertel 2515: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2516: my @pairs=split(/\&/,$rep);
1.273 albertel 2517: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2518: return @pairs;
2519: }
1.15 www 2520: my %returnhash=();
1.42 www 2521: my $i=0;
1.191 harris41 2522: foreach (@$storearr) {
1.557 albertel 2523: $returnhash{$_}=&thaw_unescape($pairs[$i]);
1.42 www 2524: $i++;
1.191 harris41 2525: }
1.15 www 2526: return %returnhash;
1.27 www 2527: }
2528:
2529: # --------------------------------------------------------------- del interface
2530:
2531: sub del {
1.133 albertel 2532: my ($namespace,$storearr,$udomain,$uname)=@_;
1.27 www 2533: my $items='';
1.191 harris41 2534: foreach (@$storearr) {
1.27 www 2535: $items.=escape($_).'&';
1.191 harris41 2536: }
1.27 www 2537: $items=~s/\&$//;
1.133 albertel 2538: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2539: if (!$uname) { $uname=$ENV{'user.name'}; }
2540: my $uhome=&homeserver($uname,$udomain);
2541:
2542: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2543: }
2544:
2545: # -------------------------------------------------------------- dump interface
2546:
2547: sub dump {
1.193 www 2548: my ($namespace,$udomain,$uname,$regexp)=@_;
1.129 albertel 2549: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2550: if (!$uname) { $uname=$ENV{'user.name'}; }
2551: my $uhome=&homeserver($uname,$udomain);
1.193 www 2552: if ($regexp) {
2553: $regexp=&escape($regexp);
2554: } else {
2555: $regexp='.';
2556: }
2557: my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
1.12 www 2558: my @pairs=split(/\&/,$rep);
2559: my %returnhash=();
1.191 harris41 2560: foreach (@pairs) {
1.12 www 2561: my ($key,$value)=split(/=/,$_);
1.557 albertel 2562: $returnhash{unescape($key)}=&thaw_unescape($value);
1.318 matthew 2563: }
2564: return %returnhash;
1.407 www 2565: }
2566:
2567: # -------------------------------------------------------------- keys interface
2568:
2569: sub getkeys {
2570: my ($namespace,$udomain,$uname)=@_;
2571: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2572: if (!$uname) { $uname=$ENV{'user.name'}; }
2573: my $uhome=&homeserver($uname,$udomain);
2574: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
2575: my @keyarray=();
2576: foreach (split(/\&/,$rep)) {
2577: push (@keyarray,&unescape($_));
2578: }
2579: return @keyarray;
1.318 matthew 2580: }
2581:
1.319 matthew 2582: # --------------------------------------------------------------- currentdump
2583: sub currentdump {
1.328 matthew 2584: my ($courseid,$sdom,$sname)=@_;
1.326 matthew 2585: $courseid = $ENV{'request.course.id'} if (! defined($courseid));
2586: $sdom = $ENV{'user.domain'} if (! defined($sdom));
2587: $sname = $ENV{'user.name'} if (! defined($sname));
2588: my $uhome = &homeserver($sname,$sdom);
2589: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
1.318 matthew 2590: return if ($rep =~ /^(error:|no_such_host)/);
1.319 matthew 2591: #
1.318 matthew 2592: my %returnhash=();
1.319 matthew 2593: #
2594: if ($rep eq "unknown_cmd") {
2595: # an old lond will not know currentdump
2596: # Do a dump and make it look like a currentdump
1.326 matthew 2597: my @tmp = &dump($courseid,$sdom,$sname,'.');
1.319 matthew 2598: return if ($tmp[0] =~ /^(error:|no_such_host)/);
2599: my %hash = @tmp;
2600: @tmp=();
1.424 matthew 2601: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
1.319 matthew 2602: } else {
2603: my @pairs=split(/\&/,$rep);
2604: foreach (@pairs) {
2605: my ($key,$value)=split(/=/,$_);
2606: my ($symb,$param) = split(/:/,$key);
2607: $returnhash{&unescape($symb)}->{&unescape($param)} =
1.557 albertel 2608: &thaw_unescape($value);
1.319 matthew 2609: }
1.191 harris41 2610: }
1.12 www 2611: return %returnhash;
1.424 matthew 2612: }
2613:
2614: sub convert_dump_to_currentdump{
2615: my %hash = %{shift()};
2616: my %returnhash;
2617: # Code ripped from lond, essentially. The only difference
2618: # here is the unescaping done by lonnet::dump(). Conceivably
2619: # we might run in to problems with parameter names =~ /^v\./
2620: while (my ($key,$value) = each(%hash)) {
2621: my ($v,$symb,$param) = split(/:/,$key);
2622: next if ($v eq 'version' || $symb eq 'keys');
2623: next if (exists($returnhash{$symb}) &&
2624: exists($returnhash{$symb}->{$param}) &&
2625: $returnhash{$symb}->{'v.'.$param} > $v);
2626: $returnhash{$symb}->{$param}=$value;
2627: $returnhash{$symb}->{'v.'.$param}=$v;
2628: }
2629: #
2630: # Remove all of the keys in the hashes which keep track of
2631: # the version of the parameter.
2632: while (my ($symb,$param_hash) = each(%returnhash)) {
2633: # use a foreach because we are going to delete from the hash.
2634: foreach my $key (keys(%$param_hash)) {
2635: delete($param_hash->{$key}) if ($key =~ /^v\./);
2636: }
2637: }
2638: return \%returnhash;
1.12 www 2639: }
2640:
1.449 matthew 2641: # --------------------------------------------------------------- inc interface
2642:
2643: sub inc {
2644: my ($namespace,$store,$udomain,$uname) = @_;
2645: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2646: if (!$uname) { $uname=$ENV{'user.name'}; }
2647: my $uhome=&homeserver($uname,$udomain);
2648: my $items='';
2649: if (! ref($store)) {
2650: # got a single value, so use that instead
2651: $items = &escape($store).'=&';
2652: } elsif (ref($store) eq 'SCALAR') {
2653: $items = &escape($$store).'=&';
2654: } elsif (ref($store) eq 'ARRAY') {
2655: $items = join('=&',map {&escape($_);} @{$store});
2656: } elsif (ref($store) eq 'HASH') {
2657: while (my($key,$value) = each(%{$store})) {
2658: $items.= &escape($key).'='.&escape($value).'&';
2659: }
2660: }
2661: $items=~s/\&$//;
2662: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
2663: }
2664:
1.12 www 2665: # --------------------------------------------------------------- put interface
2666:
2667: sub put {
1.134 albertel 2668: my ($namespace,$storehash,$udomain,$uname)=@_;
2669: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2670: if (!$uname) { $uname=$ENV{'user.name'}; }
2671: my $uhome=&homeserver($uname,$udomain);
1.12 www 2672: my $items='';
1.191 harris41 2673: foreach (keys %$storehash) {
1.557 albertel 2674: $items.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2675: }
1.12 www 2676: $items=~s/\&$//;
1.134 albertel 2677: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1.47 www 2678: }
2679:
1.524 raeburn 2680: # ---------------------------------------------------------- putstore interface
2681:
2682: sub putstore {
2683: my ($namespace,$storehash,$udomain,$uname)=@_;
2684: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2685: if (!$uname) { $uname=$ENV{'user.name'}; }
2686: my $uhome=&homeserver($uname,$udomain);
2687: my $items='';
2688: my %allitems = ();
2689: foreach (keys %$storehash) {
2690: if ($_ =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
2691: my $key = $1.':keys:'.$2;
2692: $allitems{$key} .= $3.':';
2693: }
2694: $items.=$_.'='.&escape($$storehash{$_}).'&';
2695: }
2696: foreach (keys %allitems) {
2697: $allitems{$_} =~ s/\:$//;
2698: $items.= $_.'='.$allitems{$_}.'&';
2699: }
2700: $items=~s/\&$//;
2701: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
2702: }
2703:
1.47 www 2704: # ------------------------------------------------------ critical put interface
2705:
2706: sub cput {
1.134 albertel 2707: my ($namespace,$storehash,$udomain,$uname)=@_;
2708: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2709: if (!$uname) { $uname=$ENV{'user.name'}; }
2710: my $uhome=&homeserver($uname,$udomain);
1.47 www 2711: my $items='';
1.191 harris41 2712: foreach (keys %$storehash) {
1.557 albertel 2713: $items.=escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2714: }
1.47 www 2715: $items=~s/\&$//;
1.134 albertel 2716: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2717: }
2718:
2719: # -------------------------------------------------------------- eget interface
2720:
2721: sub eget {
1.133 albertel 2722: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2723: my $items='';
1.191 harris41 2724: foreach (@$storearr) {
1.12 www 2725: $items.=escape($_).'&';
1.191 harris41 2726: }
1.12 www 2727: $items=~s/\&$//;
1.133 albertel 2728: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2729: if (!$uname) { $uname=$ENV{'user.name'}; }
2730: my $uhome=&homeserver($uname,$udomain);
2731: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2732: my @pairs=split(/\&/,$rep);
2733: my %returnhash=();
1.42 www 2734: my $i=0;
1.191 harris41 2735: foreach (@$storearr) {
1.557 albertel 2736: $returnhash{$_}=&thaw_unescape($pairs[$i]);
1.42 www 2737: $i++;
1.191 harris41 2738: }
1.12 www 2739: return %returnhash;
2740: }
2741:
1.341 www 2742: # ---------------------------------------------- Custom access rule evaluation
2743:
2744: sub customaccess {
2745: my ($priv,$uri)=@_;
1.342 www 2746: my ($urole,$urealm)=split(/\./,$ENV{'request.role'});
1.343 www 2747: $urealm=~s/^\W//;
2748: my ($udom,$ucrs,$usec)=split(/\//,$urealm);
1.341 www 2749: my $access=0;
2750: foreach (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
1.342 www 2751: my ($effect,$realm,$role)=split(/\:/,$_);
1.343 www 2752: if ($role) {
2753: if ($role ne $urole) { next; }
2754: }
2755: foreach (split(/\s*\,\s*/,$realm)) {
2756: my ($tdom,$tcrs,$tsec)=split(/\_/,$_);
2757: if ($tdom) {
2758: if ($tdom ne $udom) { next; }
2759: }
2760: if ($tcrs) {
2761: if ($tcrs ne $ucrs) { next; }
2762: }
2763: if ($tsec) {
2764: if ($tsec ne $usec) { next; }
2765: }
2766: $access=($effect eq 'allow');
2767: last;
1.342 www 2768: }
1.402 bowersj2 2769: if ($realm eq '' && $role eq '') {
2770: $access=($effect eq 'allow');
2771: }
1.341 www 2772: }
2773: return $access;
2774: }
2775:
1.103 harris41 2776: # ------------------------------------------------- Check for a user privilege
1.12 www 2777:
2778: sub allowed {
2779: my ($priv,$uri)=@_;
1.439 www 2780: $uri=&deversion($uri);
1.152 www 2781: my $orguri=$uri;
1.52 www 2782: $uri=&declutter($uri);
1.545 banghart 2783:
2784:
2785:
1.398 albertel 2786: if (defined($ENV{'allowed.'.$priv})) { return $ENV{'allowed.'.$priv}; }
1.54 www 2787: # Free bre access to adm and meta resources
1.529 albertel 2788: if (((($uri=~/^adm\//) && ($uri !~ m|/bulletinboard$|))
2789: || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 2790: return 'F';
1.159 www 2791: }
2792:
1.545 banghart 2793: # Free bre access to user's own portfolio contents
1.546 albertel 2794: my ($space,$domain,$name,$dir)=split('/',$uri);
2795: if (('uploaded' eq $space) && ($ENV{'user.name'} eq $name) &&
2796: ($ENV{'user.domain'} eq $domain) && ('portfolio' eq $dir)) {
1.545 banghart 2797: return 'F';
2798: }
2799:
1.159 www 2800: # Free bre to public access
2801:
2802: if ($priv eq 'bre') {
1.238 www 2803: my $copyright=&metadata($uri,'copyright');
1.301 www 2804: if (($copyright eq 'public') && (!$ENV{'request.course.id'})) {
2805: return 'F';
2806: }
1.238 www 2807: if ($copyright eq 'priv') {
2808: $uri=~/([^\/]+)\/([^\/]+)\//;
2809: unless (($ENV{'user.name'} eq $2) && ($ENV{'user.domain'} eq $1)) {
2810: return '';
2811: }
2812: }
2813: if ($copyright eq 'domain') {
2814: $uri=~/([^\/]+)\/([^\/]+)\//;
2815: unless (($ENV{'user.domain'} eq $1) ||
2816: ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $1)) {
2817: return '';
2818: }
1.262 matthew 2819: }
2820: if ($ENV{'request.role'}=~ /li\.\//) {
2821: # Library role, so allow browsing of resources in this domain.
2822: return 'F';
1.238 www 2823: }
1.341 www 2824: if ($copyright eq 'custom') {
2825: unless (&customaccess($priv,$uri)) { return ''; }
2826: }
1.14 www 2827: }
1.264 matthew 2828: # Domain coordinator is trying to create a course
2829: if (($priv eq 'ccc') && ($ENV{'request.role'} =~ /^dc\./)) {
2830: # uri is the requested domain in this case.
2831: # comparison to 'request.role.domain' shows if the user has selected
2832: # a role of dc for the domain in question.
2833: return 'F' if ($uri eq $ENV{'request.role.domain'});
2834: }
1.29 www 2835:
1.52 www 2836: my $thisallowed='';
2837: my $statecond=0;
2838: my $courseprivid='';
2839:
2840: # Course
2841:
1.479 albertel 2842: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2843: $thisallowed.=$1;
2844: }
1.29 www 2845:
1.52 www 2846: # Domain
2847:
2848: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1.479 albertel 2849: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 2850: $thisallowed.=$1;
2851: }
1.52 www 2852:
2853: # Course: uri itself is a course
1.66 www 2854: my $courseuri=$uri;
2855: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 2856: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 2857:
1.83 www 2858: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.479 albertel 2859: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 2860: $thisallowed.=$1;
2861: }
1.29 www 2862:
1.314 www 2863: # URI is an uploaded document for this course
2864:
1.492 albertel 2865: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
2866: my $refuri=$ENV{'httpref.'.$orguri};
2867: if ($refuri) {
2868: if ($refuri =~ m|^/adm/|) {
2869: $thisallowed='F';
2870: }
2871: }
1.314 www 2872: }
1.492 albertel 2873:
1.52 www 2874: # Full access at system, domain or course-wide level? Exit.
1.29 www 2875:
2876: if ($thisallowed=~/F/) {
2877: return 'F';
2878: }
2879:
1.52 www 2880: # If this is generating or modifying users, exit with special codes
1.29 www 2881:
1.479 albertel 2882: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:\Q$priv\E\:/) {
1.52 www 2883: return $thisallowed;
2884: }
2885: #
1.103 harris41 2886: # Gathered so far: system, domain and course wide privileges
1.52 www 2887: #
2888: # Course: See if uri or referer is an individual resource that is part of
2889: # the course
2890:
2891: if ($ENV{'request.course.id'}) {
1.232 www 2892:
1.52 www 2893: $courseprivid=$ENV{'request.course.id'};
2894: if ($ENV{'request.course.sec'}) {
2895: $courseprivid.='/'.$ENV{'request.course.sec'};
2896: }
2897: $courseprivid=~s/\_/\//;
2898: my $checkreferer=1;
1.232 www 2899: my ($match,$cond)=&is_on_map($uri);
2900: if ($match) {
2901: $statecond=$cond;
1.52 www 2902: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1.479 albertel 2903: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2904: $thisallowed.=$1;
2905: $checkreferer=0;
2906: }
1.29 www 2907: }
1.83 www 2908:
1.148 www 2909: if ($checkreferer) {
1.152 www 2910: my $refuri=$ENV{'httpref.'.$orguri};
1.148 www 2911: unless ($refuri) {
1.191 harris41 2912: foreach (keys %ENV) {
1.148 www 2913: if ($_=~/^httpref\..*\*/) {
2914: my $pattern=$_;
1.156 www 2915: $pattern=~s/^httpref\.\/res\///;
1.148 www 2916: $pattern=~s/\*/\[\^\/\]\+/g;
2917: $pattern=~s/\//\\\//g;
1.152 www 2918: if ($orguri=~/$pattern/) {
1.148 www 2919: $refuri=$ENV{$_};
2920: }
2921: }
1.191 harris41 2922: }
1.148 www 2923: }
1.232 www 2924:
1.148 www 2925: if ($refuri) {
1.152 www 2926: $refuri=&declutter($refuri);
1.232 www 2927: my ($match,$cond)=&is_on_map($refuri);
2928: if ($match) {
2929: my $refstatecond=$cond;
1.52 www 2930: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1.479 albertel 2931: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2932: $thisallowed.=$1;
1.53 www 2933: $uri=$refuri;
2934: $statecond=$refstatecond;
1.52 www 2935: }
2936: }
1.148 www 2937: }
1.29 www 2938: }
1.52 www 2939: }
1.29 www 2940:
1.52 www 2941: #
1.103 harris41 2942: # Gathered now: all privileges that could apply, and condition number
1.52 www 2943: #
2944: #
2945: # Full or no access?
2946: #
1.29 www 2947:
1.52 www 2948: if ($thisallowed=~/F/) {
2949: return 'F';
2950: }
1.29 www 2951:
1.52 www 2952: unless ($thisallowed) {
2953: return '';
2954: }
1.29 www 2955:
1.52 www 2956: # Restrictions exist, deal with them
2957: #
2958: # C:according to course preferences
2959: # R:according to resource settings
2960: # L:unless locked
2961: # X:according to user session state
2962: #
2963:
2964: # Possibly locked functionality, check all courses
1.54 www 2965: # Locks might take effect only after 10 minutes cache expiration for other
2966: # courses, and 2 minutes for current course
1.52 www 2967:
2968: my $envkey;
2969: if ($thisallowed=~/L/) {
2970: foreach $envkey (keys %ENV) {
1.54 www 2971: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
2972: my $courseid=$2;
2973: my $roleid=$1.'.'.$2;
1.92 www 2974: $courseid=~s/^\///;
1.54 www 2975: my $expiretime=600;
2976: if ($ENV{'request.role'} eq $roleid) {
2977: $expiretime=120;
2978: }
2979: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
2980: my $prefix='course.'.$cdom.'_'.$cnum.'.';
2981: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
2982: &coursedescription($courseid);
2983: }
1.479 albertel 2984: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
1.54 www 2985: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
2986: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 2987: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 2988: $ENV{'user.home'},
1.57 www 2989: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 2990: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 2991: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 2992: return '';
2993: }
2994: }
1.479 albertel 2995: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
1.54 www 2996: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
2997: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 2998: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 2999: $ENV{'user.home'},
1.57 www 3000: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 3001: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 3002: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 3003: return '';
3004: }
3005: }
3006: }
1.29 www 3007: }
1.52 www 3008: }
3009:
3010: #
3011: # Rest of the restrictions depend on selected course
3012: #
3013:
3014: unless ($ENV{'request.course.id'}) {
3015: return '1';
3016: }
1.29 www 3017:
1.52 www 3018: #
3019: # Now user is definitely in a course
3020: #
1.53 www 3021:
3022:
3023: # Course preferences
3024:
3025: if ($thisallowed=~/C/) {
1.54 www 3026: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.237 www 3027: my $unamedom=$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.54 www 3028: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1.479 albertel 3029: =~/\Q$rolecode\E/) {
1.57 www 3030: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
3031: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.237 www 3032: $ENV{'request.course.id'});
3033: return '';
3034: }
3035:
3036: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.users.denied'}
1.479 albertel 3037: =~/\Q$unamedom\E/) {
1.237 www 3038: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
3039: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
1.54 www 3040: $ENV{'request.course.id'});
3041: return '';
3042: }
1.53 www 3043: }
3044:
3045: # Resource preferences
3046:
3047: if ($thisallowed=~/R/) {
1.54 www 3048: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.479 albertel 3049: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
1.341 www 3050: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1.57 www 3051: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.341 www 3052: return '';
1.54 www 3053: }
1.53 www 3054: }
1.30 www 3055:
1.246 www 3056: # Restricted by state or randomout?
1.30 www 3057:
1.52 www 3058: if ($thisallowed=~/X/) {
1.247 www 3059: if ($ENV{'acc.randomout'}) {
1.249 www 3060: my $symb=&symbread($uri,1);
1.479 albertel 3061: if (($symb) && ($ENV{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
1.248 www 3062: return '';
3063: }
1.247 www 3064: }
3065: if (&condval($statecond)) {
1.52 www 3066: return '2';
3067: } else {
3068: return '';
3069: }
3070: }
1.30 www 3071:
1.52 www 3072: return 'F';
1.232 www 3073: }
3074:
3075: # --------------------------------------------------- Is a resource on the map?
3076:
3077: sub is_on_map {
3078: my $uri=&declutter(shift);
1.435 www 3079: $uri=~s/\.\d+\.(\w+)$/\.$1/;
1.232 www 3080: my @uriparts=split(/\//,$uri);
3081: my $filename=$uriparts[$#uriparts];
3082: my $pathname=$uri;
1.289 bowersj2 3083: $pathname=~s|/\Q$filename\E$||;
1.332 www 3084: $pathname=~s/^adm\/wrapper\///;
1.289 bowersj2 3085: #Trying to find the conditional for the file
1.232 www 3086: my $match=($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.289 bowersj2 3087: /\&\Q$filename\E\:([\d\|]+)\&/);
1.232 www 3088: if ($match) {
1.289 bowersj2 3089: return (1,$1);
3090: } else {
1.434 www 3091: return (0,0);
1.289 bowersj2 3092: }
1.12 www 3093: }
3094:
1.427 www 3095: # --------------------------------------------------------- Get symb from alias
3096:
3097: sub get_symb_from_alias {
3098: my $symb=shift;
3099: my ($map,$resid,$url)=&decode_symb($symb);
3100: # Already is a symb
3101: if ($url) { return $symb; }
3102: # Must be an alias
3103: my $aliassymb='';
3104: my %bighash;
3105: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
3106: &GDBM_READER(),0640)) {
3107: my $rid=$bighash{'mapalias_'.$symb};
3108: if ($rid) {
3109: my ($mapid,$resid)=split(/\./,$rid);
1.429 albertel 3110: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
3111: $resid,$bighash{'src_'.$rid});
1.427 www 3112: }
3113: untie %bighash;
3114: }
3115: return $aliassymb;
3116: }
3117:
1.12 www 3118: # ----------------------------------------------------------------- Define Role
3119:
3120: sub definerole {
3121: if (allowed('mcr','/')) {
3122: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.392 www 3123: foreach (split(':',$sysrole)) {
1.21 www 3124: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3125: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
3126: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
3127: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3128: return "refused:s:$crole&$cqual";
3129: }
3130: }
1.191 harris41 3131: }
1.392 www 3132: foreach (split(':',$domrole)) {
1.21 www 3133: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3134: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
3135: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
3136: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
1.21 www 3137: return "refused:d:$crole&$cqual";
3138: }
3139: }
1.191 harris41 3140: }
1.392 www 3141: foreach (split(':',$courole)) {
1.21 www 3142: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3143: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
3144: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
3145: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3146: return "refused:c:$crole&$cqual";
3147: }
3148: }
1.191 harris41 3149: }
1.12 www 3150: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
3151: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 3152: "rolesdef_$rolename=".
3153: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 3154: return reply($command,$ENV{'user.home'});
3155: } else {
3156: return 'refused';
3157: }
1.105 harris41 3158: }
3159:
3160: # ---------------- Make a metadata query against the network of library servers
3161:
3162: sub metadata_query {
1.244 matthew 3163: my ($query,$custom,$customshow,$server_array)=@_;
1.120 harris41 3164: my %rhash;
1.244 matthew 3165: my @server_list = (defined($server_array) ? @$server_array
3166: : keys(%libserv) );
3167: for my $server (@server_list) {
1.118 harris41 3168: unless ($custom or $customshow) {
3169: my $reply=&reply("querysend:".&escape($query),$server);
3170: $rhash{$server}=$reply;
3171: }
3172: else {
3173: my $reply=&reply("querysend:".&escape($query).':'.
3174: &escape($custom).':'.&escape($customshow),
3175: $server);
3176: $rhash{$server}=$reply;
3177: }
1.112 harris41 3178: }
1.118 harris41 3179: return \%rhash;
1.240 www 3180: }
3181:
3182: # ----------------------------------------- Send log queries and wait for reply
3183:
3184: sub log_query {
3185: my ($uname,$udom,$query,%filters)=@_;
3186: my $uhome=&homeserver($uname,$udom);
3187: if ($uhome eq 'no_host') { return 'error: no_host'; }
3188: my $uhost=$hostname{$uhome};
1.241 www 3189: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys %filters));
1.240 www 3190: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
3191: $uhome);
1.479 albertel 3192: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
1.242 www 3193: return get_query_reply($queryid);
3194: }
3195:
1.508 raeburn 3196: # ------- Request retrieval of institutional classlists for course(s)
1.506 raeburn 3197:
3198: sub fetch_enrollment_query {
1.511 raeburn 3199: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
1.508 raeburn 3200: my $homeserver;
1.547 raeburn 3201: my $maxtries = 1;
1.508 raeburn 3202: if ($context eq 'automated') {
3203: $homeserver = $perlvar{'lonHostID'};
1.547 raeburn 3204: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
1.508 raeburn 3205: } else {
3206: $homeserver = &homeserver($cnum,$dom);
3207: }
1.506 raeburn 3208: my $host=$hostname{$homeserver};
3209: my $cmd = '';
3210: foreach (keys %{$affiliatesref}) {
1.508 raeburn 3211: $cmd .= $_.'='.join(",",@{$$affiliatesref{$_}}).'%%';
1.506 raeburn 3212: }
3213: $cmd =~ s/%%$//;
3214: $cmd = &escape($cmd);
3215: my $query = 'fetchenrollment';
3216: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$ENV{'user.name'}.':'.$cmd,$homeserver);
1.526 raeburn 3217: unless ($queryid=~/^\Q$host\E\_/) {
3218: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
3219: return 'error: '.$queryid;
3220: }
1.506 raeburn 3221: my $reply = &get_query_reply($queryid);
1.547 raeburn 3222: my $tries = 1;
3223: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
3224: $reply = &get_query_reply($queryid);
3225: $tries ++;
3226: }
1.526 raeburn 3227: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1.547 raeburn 3228: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$ENV{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
1.526 raeburn 3229: } else {
1.515 raeburn 3230: my @responses = split/:/,$reply;
3231: if ($homeserver eq $perlvar{'lonHostID'}) {
3232: foreach (@responses) {
3233: my ($key,$value) = split/=/,$_;
3234: $$replyref{$key} = $value;
3235: }
3236: } else {
1.506 raeburn 3237: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
3238: foreach (@responses) {
3239: my ($key,$value) = split/=/,$_;
3240: $$replyref{$key} = $value;
3241: if ($value > 0) {
3242: foreach (@{$$affiliatesref{$key}}) {
3243: my $filename = $dom.'_'.$key.'_'.$_.'_classlist.xml';
3244: my $destname = $pathname.'/'.$filename;
3245: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
1.526 raeburn 3246: if ($xml_classlist =~ /^error/) {
3247: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
3248: } else {
1.506 raeburn 3249: if ( open(FILE,">$destname") ) {
3250: print FILE &unescape($xml_classlist);
3251: close(FILE);
1.526 raeburn 3252: } else {
3253: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
1.506 raeburn 3254: }
3255: }
3256: }
3257: }
3258: }
3259: }
3260: return 'ok';
3261: }
3262: return 'error';
3263: }
3264:
1.242 www 3265: sub get_query_reply {
3266: my $queryid=shift;
1.240 www 3267: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
3268: my $reply='';
3269: for (1..100) {
3270: sleep 2;
3271: if (-e $replyfile.'.end') {
1.448 albertel 3272: if (open(my $fh,$replyfile)) {
1.240 www 3273: $reply.=<$fh>;
1.448 albertel 3274: close($fh);
1.240 www 3275: } else { return 'error: reply_file_error'; }
1.242 www 3276: return &unescape($reply);
3277: }
1.240 www 3278: }
1.242 www 3279: return 'timeout:'.$queryid;
1.240 www 3280: }
3281:
3282: sub courselog_query {
1.241 www 3283: #
3284: # possible filters:
3285: # url: url or symb
3286: # username
3287: # domain
3288: # action: view, submit, grade
3289: # start: timestamp
3290: # end: timestamp
3291: #
1.240 www 3292: my (%filters)=@_;
3293: unless ($ENV{'request.course.id'}) { return 'no_course'; }
1.241 www 3294: if ($filters{'url'}) {
3295: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
3296: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
3297: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
3298: }
1.240 www 3299: my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
3300: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
3301: return &log_query($cname,$cdom,'courselog',%filters);
3302: }
3303:
3304: sub userlog_query {
3305: my ($uname,$udom,%filters)=@_;
3306: return &log_query($uname,$udom,'userlog',%filters);
1.12 www 3307: }
3308:
1.506 raeburn 3309: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
3310:
3311: sub auto_run {
1.508 raeburn 3312: my ($cnum,$cdom) = @_;
3313: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3314: my $response = &reply('autorun:'.$cdom,$homeserver);
1.506 raeburn 3315: return $response;
3316: }
3317:
3318: sub auto_get_sections {
1.508 raeburn 3319: my ($cnum,$cdom,$inst_coursecode) = @_;
3320: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3321: my @secs = ();
1.511 raeburn 3322: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
1.506 raeburn 3323: unless ($response eq 'refused') {
3324: @secs = split/:/,$response;
3325: }
3326: return @secs;
3327: }
3328:
3329: sub auto_new_course {
1.508 raeburn 3330: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
3331: my $homeserver = &homeserver($cnum,$cdom);
1.515 raeburn 3332: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
1.506 raeburn 3333: return $response;
3334: }
3335:
3336: sub auto_validate_courseID {
1.508 raeburn 3337: my ($cnum,$cdom,$inst_course_id) = @_;
3338: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3339: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
1.506 raeburn 3340: return $response;
3341: }
3342:
3343: sub auto_create_password {
1.508 raeburn 3344: my ($cnum,$cdom,$authparam) = @_;
3345: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3346: my $create_passwd = 0;
3347: my $authchk = '';
1.511 raeburn 3348: my $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
1.506 raeburn 3349: if ($response eq 'refused') {
3350: $authchk = 'refused';
3351: } else {
3352: ($authparam,$create_passwd,$authchk) = split/:/,$response;
3353: }
3354: return ($authparam,$create_passwd,$authchk);
3355: }
3356:
1.521 raeburn 3357: sub auto_instcode_format {
3358: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
3359: my $courses = '';
3360: my $homeserver;
3361: if ($caller eq 'global') {
3362: $homeserver = $perlvar{'lonHostID'};
3363: } else {
3364: $homeserver = &homeserver($caller,$codedom);
3365: }
3366: my $host=$hostname{$homeserver};
3367: foreach (keys %{$instcodes}) {
3368: $courses .= &escape($_).'='.&escape($$instcodes{$_}).'&';
3369: }
3370: chop($courses);
3371: my $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$homeserver);
3372: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
3373: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) = split/:/,$response;
3374: %{$codes} = &str2hash($codes_str);
3375: @{$codetitles} = &str2array($codetitles_str);
3376: %{$cat_titles} = &str2hash($cat_titles_str);
3377: %{$cat_order} = &str2hash($cat_order_str);
3378: return 'ok';
3379: }
3380: return $response;
3381: }
3382:
1.12 www 3383: # ------------------------------------------------------------------ Plain Text
3384:
3385: sub plaintext {
1.22 www 3386: my $short=shift;
1.414 www 3387: return &mt($prp{$short});
1.12 www 3388: }
3389:
3390: # ----------------------------------------------------------------- Assign Role
3391:
3392: sub assignrole {
1.357 www 3393: my ($udom,$uname,$url,$role,$end,$start,$deleteflag)=@_;
1.21 www 3394: my $mrole;
3395: if ($role =~ /^cr\//) {
1.393 www 3396: my $cwosec=$url;
3397: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
3398: unless (&allowed('ccr',$cwosec)) {
1.104 www 3399: &logthis('Refused custom assignrole: '.
3400: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
3401: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
3402: return 'refused';
3403: }
1.21 www 3404: $mrole='cr';
3405: } else {
1.82 www 3406: my $cwosec=$url;
1.83 www 3407: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.373 www 3408: unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) {
1.104 www 3409: &logthis('Refused assignrole: '.
3410: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
3411: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
3412: return 'refused';
3413: }
1.21 www 3414: $mrole=$role;
3415: }
3416: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
3417: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 3418: if ($end) { $command.='_'.$end; }
1.21 www 3419: if ($start) {
3420: if ($end) {
1.81 www 3421: $command.='_'.$start;
1.21 www 3422: } else {
1.81 www 3423: $command.='_0_'.$start;
1.21 www 3424: }
3425: }
1.357 www 3426: # actually delete
3427: if ($deleteflag) {
1.373 www 3428: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
1.357 www 3429: # modify command to delete the role
3430: $command="encrypt:rolesdel:$ENV{'user.domain'}:$ENV{'user.name'}:".
3431: "$udom:$uname:$url".'_'."$mrole";
1.373 www 3432: &logthis("$ENV{'user.name'} at $ENV{'user.domain'} deletes $mrole in $url for $uname at $udom");
1.357 www 3433: # set start and finish to negative values for userrolelog
3434: $start=-1;
3435: $end=-1;
3436: }
3437: }
3438: # send command
1.349 www 3439: my $answer=&reply($command,&homeserver($uname,$udom));
1.357 www 3440: # log new user role if status is ok
1.349 www 3441: if ($answer eq 'ok') {
3442: &userrolelog($mrole,$uname,$udom,$url,$start,$end);
3443: }
3444: return $answer;
1.169 harris41 3445: }
3446:
3447: # -------------------------------------------------- Modify user authentication
1.197 www 3448: # Overrides without validation
3449:
1.169 harris41 3450: sub modifyuserauth {
3451: my ($udom,$uname,$umode,$upass)=@_;
3452: my $uhome=&homeserver($uname,$udom);
1.197 www 3453: unless (&allowed('mau',$udom)) { return 'refused'; }
3454: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
1.272 matthew 3455: $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
3456: ' in domain '.$ENV{'request.role.domain'});
1.169 harris41 3457: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
3458: &escape($upass),$uhome);
1.197 www 3459: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
3460: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
3461: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
3462: &log($udom,,$uname,$uhome,
3463: 'Authentication changed by '.$ENV{'user.domain'}.', '.
3464: $ENV{'user.name'}.', '.$umode.
3465: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
1.169 harris41 3466: unless ($reply eq 'ok') {
1.197 www 3467: &logthis('Authentication mode error: '.$reply);
1.169 harris41 3468: return 'error: '.$reply;
3469: }
1.170 harris41 3470: return 'ok';
1.80 www 3471: }
3472:
1.81 www 3473: # --------------------------------------------------------------- Modify a user
1.80 www 3474:
1.81 www 3475: sub modifyuser {
1.206 matthew 3476: my ($udom, $uname, $uid,
3477: $umode, $upass, $first,
3478: $middle, $last, $gene,
1.387 www 3479: $forceid, $desiredhome, $email)=@_;
1.198 www 3480: $udom=~s/\W//g;
3481: $uname=~s/\W//g;
1.81 www 3482: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3483: $umode.', '.$first.', '.$middle.', '.
1.206 matthew 3484: $last.', '.$gene.'(forceid: '.$forceid.')'.
3485: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
3486: ' desiredhome not specified').
1.272 matthew 3487: ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
3488: ' in domain '.$ENV{'request.role.domain'});
1.230 stredwic 3489: my $uhome=&homeserver($uname,$udom,'true');
1.80 www 3490: # ----------------------------------------------------------------- Create User
1.406 albertel 3491: if (($uhome eq 'no_host') &&
3492: (($umode && $upass) || ($umode eq 'localauth'))) {
1.80 www 3493: my $unhome='';
1.209 matthew 3494: if (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) {
3495: $unhome = $desiredhome;
3496: } elsif($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1.80 www 3497: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.209 matthew 3498: } else { # load balancing routine for determining $unhome
1.80 www 3499: my $tryserver;
1.81 www 3500: my $loadm=10000000;
1.80 www 3501: foreach $tryserver (keys %libserv) {
3502: if ($hostdom{$tryserver} eq $udom) {
3503: my $answer=reply('load',$tryserver);
3504: if (($answer=~/\d+/) && ($answer<$loadm)) {
3505: $loadm=$answer;
3506: $unhome=$tryserver;
3507: }
3508: }
3509: }
3510: }
3511: if (($unhome eq '') || ($unhome eq 'no_host')) {
1.206 matthew 3512: return 'error: unable to find a home server for '.$uname.
3513: ' in domain '.$udom;
1.80 www 3514: }
3515: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
3516: &escape($upass),$unhome);
3517: unless ($reply eq 'ok') {
3518: return 'error: '.$reply;
3519: }
1.230 stredwic 3520: $uhome=&homeserver($uname,$udom,'true');
1.80 www 3521: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1.386 matthew 3522: return 'error: unable verify users home machine.';
1.80 www 3523: }
1.209 matthew 3524: } # End of creation of new user
1.80 www 3525: # ---------------------------------------------------------------------- Add ID
3526: if ($uid) {
3527: $uid=~tr/A-Z/a-z/;
3528: my %uidhash=&idrget($udom,$uname);
1.196 www 3529: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
3530: && (!$forceid)) {
1.80 www 3531: unless ($uid eq $uidhash{$uname}) {
1.386 matthew 3532: return 'error: user id "'.$uid.'" does not match '.
3533: 'current user id "'.$uidhash{$uname}.'".';
1.80 www 3534: }
3535: } else {
3536: &idput($udom,($uname => $uid));
3537: }
3538: }
3539: # -------------------------------------------------------------- Add names, etc
1.313 matthew 3540: my @tmp=&get('environment',
1.134 albertel 3541: ['firstname','middlename','lastname','generation'],
3542: $udom,$uname);
1.313 matthew 3543: my %names;
3544: if ($tmp[0] =~ m/^error:.*/) {
3545: %names=();
3546: } else {
3547: %names = @tmp;
3548: }
1.388 www 3549: #
3550: # Make sure to not trash student environment if instructor does not bother
3551: # to supply name and email information
3552: #
3553: if ($first) { $names{'firstname'} = $first; }
1.385 matthew 3554: if (defined($middle)) { $names{'middlename'} = $middle; }
1.388 www 3555: if ($last) { $names{'lastname'} = $last; }
1.385 matthew 3556: if (defined($gene)) { $names{'generation'} = $gene; }
1.388 www 3557: if ($email) { $names{'notification'} = $email;
3558: $names{'critnotification'} = $email; }
1.387 www 3559:
1.134 albertel 3560: my $reply = &put('environment', \%names, $udom,$uname);
3561: if ($reply ne 'ok') { return 'error: '.$reply; }
1.81 www 3562: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3563: $umode.', '.$first.', '.$middle.', '.
3564: $last.', '.$gene.' by '.
3565: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.134 albertel 3566: return 'ok';
1.80 www 3567: }
3568:
1.81 www 3569: # -------------------------------------------------------------- Modify student
1.80 www 3570:
1.81 www 3571: sub modifystudent {
3572: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1.515 raeburn 3573: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
1.455 albertel 3574: if (!$cid) {
3575: unless ($cid=$ENV{'request.course.id'}) {
3576: return 'not_in_class';
3577: }
1.80 www 3578: }
3579: # --------------------------------------------------------------- Make the user
1.81 www 3580: my $reply=&modifyuser
1.209 matthew 3581: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
1.387 www 3582: $desiredhome,$email);
1.80 www 3583: unless ($reply eq 'ok') { return $reply; }
1.297 matthew 3584: # This will cause &modify_student_enrollment to get the uid from the
3585: # students environment
3586: $uid = undef if (!$forceid);
1.455 albertel 3587: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
1.515 raeburn 3588: $gene,$usec,$end,$start,$type,$locktype,$cid);
1.297 matthew 3589: return $reply;
3590: }
3591:
3592: sub modify_student_enrollment {
1.515 raeburn 3593: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid) = @_;
1.455 albertel 3594: my ($cdom,$cnum,$chome);
3595: if (!$cid) {
3596: unless ($cid=$ENV{'request.course.id'}) {
3597: return 'not_in_class';
3598: }
3599: $cdom=$ENV{'course.'.$cid.'.domain'};
3600: $cnum=$ENV{'course.'.$cid.'.num'};
3601: } else {
3602: ($cdom,$cnum)=split(/_/,$cid);
3603: }
3604: $chome=$ENV{'course.'.$cid.'.home'};
3605: if (!$chome) {
1.457 raeburn 3606: $chome=&homeserver($cnum,$cdom);
1.297 matthew 3607: }
1.455 albertel 3608: if (!$chome) { return 'unknown_course'; }
1.297 matthew 3609: # Make sure the user exists
1.81 www 3610: my $uhome=&homeserver($uname,$udom);
3611: if (($uhome eq '') || ($uhome eq 'no_host')) {
3612: return 'error: no such user';
3613: }
1.297 matthew 3614: # Get student data if we were not given enough information
3615: if (!defined($first) || $first eq '' ||
3616: !defined($last) || $last eq '' ||
3617: !defined($uid) || $uid eq '' ||
3618: !defined($middle) || $middle eq '' ||
3619: !defined($gene) || $gene eq '') {
1.294 matthew 3620: # They did not supply us with enough data to enroll the student, so
3621: # we need to pick up more information.
1.297 matthew 3622: my %tmp = &get('environment',
1.294 matthew 3623: ['firstname','middlename','lastname', 'generation','id']
1.297 matthew 3624: ,$udom,$uname);
3625:
1.455 albertel 3626: #foreach (keys(%tmp)) {
3627: # &logthis("key $_ = ".$tmp{$_});
3628: #}
1.294 matthew 3629: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
3630: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
3631: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
1.297 matthew 3632: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
1.294 matthew 3633: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
3634: }
1.556 albertel 3635: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
1.487 albertel 3636: my $reply=cput('classlist',
3637: {"$uname:$udom" =>
1.515 raeburn 3638: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
1.487 albertel 3639: $cdom,$cnum);
1.81 www 3640: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
3641: return 'error: '.$reply;
3642: }
1.297 matthew 3643: # Add student role to user
1.83 www 3644: my $uurl='/'.$cid;
1.81 www 3645: $uurl=~s/\_/\//g;
3646: if ($usec) {
3647: $uurl.='/'.$usec;
3648: }
3649: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 3650: }
3651:
1.556 albertel 3652: sub format_name {
3653: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
3654: my $name;
3655: if ($first ne 'lastname') {
3656: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
3657: } else {
3658: if ($lastname=~/\S/) {
3659: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
3660: $name=~s/\s+,/,/;
3661: } else {
3662: $name.= $firstname.' '.$middlename.' '.$generation;
3663: }
3664: }
3665: $name=~s/^\s+//;
3666: $name=~s/\s+$//;
3667: $name=~s/\s+/ /g;
3668: return $name;
3669: }
3670:
1.84 www 3671: # ------------------------------------------------- Write to course preferences
3672:
3673: sub writecoursepref {
3674: my ($courseid,%prefs)=@_;
3675: $courseid=~s/^\///;
3676: $courseid=~s/\_/\//g;
3677: my ($cdomain,$cnum)=split(/\//,$courseid);
3678: my $chome=homeserver($cnum,$cdomain);
3679: if (($chome eq '') || ($chome eq 'no_host')) {
3680: return 'error: no such course';
3681: }
3682: my $cstring='';
1.191 harris41 3683: foreach (keys %prefs) {
1.84 www 3684: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1.191 harris41 3685: }
1.84 www 3686: $cstring=~s/\&$//;
3687: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
3688: }
3689:
3690: # ---------------------------------------------------------- Make/modify course
3691:
3692: sub createcourse {
1.571 ! raeburn 3693: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner)=@_;
1.84 www 3694: $url=&declutter($url);
3695: my $cid='';
1.264 matthew 3696: unless (&allowed('ccc',$udom)) {
1.84 www 3697: return 'refused';
3698: }
3699: # ------------------------------------------------------------------- Create ID
3700: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
3701: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
3702: # ----------------------------------------------- Make sure that does not exist
1.230 stredwic 3703: my $uhome=&homeserver($uname,$udom,'true');
1.84 www 3704: unless (($uhome eq '') || ($uhome eq 'no_host')) {
3705: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
3706: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1.230 stredwic 3707: $uhome=&homeserver($uname,$udom,'true');
1.84 www 3708: unless (($uhome eq '') || ($uhome eq 'no_host')) {
3709: return 'error: unable to generate unique course-ID';
3710: }
3711: }
1.264 matthew 3712: # ------------------------------------------------ Check supplied server name
3713: $course_server = $ENV{'user.homeserver'} if (! defined($course_server));
3714: if (! exists($libserv{$course_server})) {
3715: return 'error:bad server name '.$course_server;
3716: }
1.84 www 3717: # ------------------------------------------------------------- Make the course
3718: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1.264 matthew 3719: $course_server);
1.84 www 3720: unless ($reply eq 'ok') { return 'error: '.$reply; }
1.230 stredwic 3721: $uhome=&homeserver($uname,$udom,'true');
1.84 www 3722: if (($uhome eq '') || ($uhome eq 'no_host')) {
3723: return 'error: no such course';
3724: }
1.271 www 3725: # ----------------------------------------------------------------- Course made
1.516 raeburn 3726: # log existence
3727: &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
1.571 ! raeburn 3728: ':'.&escape($inst_code).':'.&escape($course_owner),$uhome);
1.358 www 3729: &flushcourselogs();
3730: # set toplevel url
1.271 www 3731: my $topurl=$url;
3732: unless ($nonstandard) {
3733: # ------------------------------------------ For standard courses, make top url
3734: my $mapurl=&clutter($url);
1.278 www 3735: if ($mapurl eq '/res/') { $mapurl=''; }
1.271 www 3736: $ENV{'form.initmap'}=(<<ENDINITMAP);
3737: <map>
3738: <resource id="1" type="start"></resource>
3739: <resource id="2" src="$mapurl"></resource>
3740: <resource id="3" type="finish"></resource>
3741: <link index="1" from="1" to="2"></link>
3742: <link index="2" from="2" to="3"></link>
3743: </map>
3744: ENDINITMAP
3745: $topurl=&declutter(
3746: &finishuserfileupload($uname,$udom,$uhome,'initmap','default.sequence')
3747: );
3748: }
3749: # ----------------------------------------------------------- Write preferences
1.84 www 3750: &writecoursepref($udom.'_'.$uname,
3751: ('description' => $description,
1.271 www 3752: 'url' => $topurl));
1.84 www 3753: return '/'.$udom.'/'.$uname;
3754: }
3755:
1.21 www 3756: # ---------------------------------------------------------- Assign Custom Role
3757:
3758: sub assigncustomrole {
1.357 www 3759: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
1.21 www 3760: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1.357 www 3761: $end,$start,$deleteflag);
1.21 www 3762: }
3763:
3764: # ----------------------------------------------------------------- Revoke Role
3765:
3766: sub revokerole {
1.357 www 3767: my ($udom,$uname,$url,$role,$deleteflag)=@_;
1.21 www 3768: my $now=time;
1.357 www 3769: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
1.21 www 3770: }
3771:
3772: # ---------------------------------------------------------- Revoke Custom Role
3773:
3774: sub revokecustomrole {
1.357 www 3775: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
1.21 www 3776: my $now=time;
1.357 www 3777: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
3778: $deleteflag);
1.17 www 3779: }
3780:
1.533 banghart 3781: # ------------------------------------------------------------ Disk usage
1.535 albertel 3782: sub diskusage {
1.533 banghart 3783: my ($udom,$uname,$directoryRoot)=@_;
3784: $directoryRoot =~ s/\/$//;
1.535 albertel 3785: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
1.514 albertel 3786: return $listing;
1.512 banghart 3787: }
3788:
1.566 banghart 3789: sub is_locked {
3790: my ($file_name, $domain, $user) = @_;
3791: my @check;
3792: my $is_locked;
3793: push @check, $file_name;
3794: my %locked = &Apache::lonnet::get('file_permissions',\@check,
3795: $ENV{'user.domain'},$ENV{'user.name'});
3796: if (ref($locked{$file_name}) eq 'ARRAY') {
3797: $is_locked = 'true';
3798: } else {
3799: $is_locked = 'false';
3800: }
3801: }
3802:
1.559 banghart 3803: # ------------------------------------------------------------- Mark as Read Only
3804:
3805: sub mark_as_readonly {
3806: my ($domain,$user,$files,$what) = @_;
3807: my %current_permissions = &Apache::lonnet::dump('file_permissions',$domain,$user);
1.560 banghart 3808: foreach my $file (@{$files}) {
1.561 banghart 3809: push(@{$current_permissions{$file}},$what);
1.559 banghart 3810: }
1.560 banghart 3811: &Apache::lonnet::put('file_permissions',\%current_permissions,$domain,$user);
1.559 banghart 3812: return;
3813: }
3814:
1.561 banghart 3815: #--------------------------------------------------------------Get Marked as Read Only
3816:
3817: sub get_marked_as_readonly {
3818: my ($domain,$user,$what) = @_;
3819: my %current_permissions = &Apache::lonnet::dump('file_permissions',$domain,$user);
1.563 banghart 3820: my @readonly_files;
3821: while (my ($file_name,$value) = each(%current_permissions)) {
1.561 banghart 3822: if (ref($value) eq "ARRAY"){
3823: foreach my $stored_what (@{$value}) {
3824: if ($stored_what eq $what) {
3825: push(@readonly_files, $file_name);
1.563 banghart 3826: } elsif (!defined($what)) {
3827: push(@readonly_files, $file_name);
1.561 banghart 3828: }
3829: }
3830: }
3831: }
3832: return @readonly_files;
3833: }
3834:
1.559 banghart 3835: # ------------------------------------------------------------ Unmark as Read Only
3836:
3837: sub unmark_as_readonly {
1.561 banghart 3838: # unmarks all files locked by $what
3839: # for portfolio submissions, $what contains $crsid and $symb
3840: my ($domain,$user,$what) = @_;
3841: my %current_permissions = &Apache::lonnet::dump('file_permissions',$domain,$user);
3842: my @readonly_files = &Apache::lonnet::get_marked_as_readonly($domain,$user,$what);
3843: foreach my $file(@readonly_files){
1.563 banghart 3844: my $current_locks = $current_permissions{$file};
3845: my @new_locks;
3846: my @del_keys;
3847: if (ref($current_locks) eq "ARRAY"){
3848: foreach my $locker (@{$current_locks}) {
3849: unless ($locker eq $what) {
3850: push(@new_locks, $what);
3851: }
3852: }
3853: if (@new_locks > 0) {
3854: $current_permissions{$file} = \@new_locks;
3855: } else {
3856: push(@del_keys, $file);
3857: &Apache::lonnet::del('file_permissions',\@del_keys, $domain, $user);
3858: delete $current_permissions{$file};
3859: }
3860: }
1.561 banghart 3861: }
3862: &Apache::lonnet::put('file_permissions',\%current_permissions,$domain,$user);
1.559 banghart 3863: return;
3864: }
1.512 banghart 3865:
1.17 www 3866: # ------------------------------------------------------------ Directory lister
3867:
3868: sub dirlist {
1.253 stredwic 3869: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
3870:
1.18 www 3871: $uri=~s/^\///;
3872: $uri=~s/\/$//;
1.253 stredwic 3873: my ($udom, $uname);
3874: (undef,$udom,$uname)=split(/\//,$uri);
3875: if(defined($userdomain)) {
3876: $udom = $userdomain;
3877: }
3878: if(defined($username)) {
3879: $uname = $username;
3880: }
3881:
3882: my $dirRoot = $perlvar{'lonDocRoot'};
3883: if(defined($alternateDirectoryRoot)) {
3884: $dirRoot = $alternateDirectoryRoot;
3885: $dirRoot =~ s/\/$//;
3886: }
3887:
3888: if($udom) {
3889: if($uname) {
3890: my $listing=reply('ls:'.$dirRoot.'/'.$uri,
3891: homeserver($uname,$udom));
3892: return split(/:/,$listing);
3893: } elsif(!defined($alternateDirectoryRoot)) {
3894: my $tryserver;
3895: my %allusers=();
3896: foreach $tryserver (keys %libserv) {
3897: if($hostdom{$tryserver} eq $udom) {
3898: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
3899: $udom, $tryserver);
3900: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
3901: && ($listing ne 'con_lost')) {
3902: foreach (split(/:/,$listing)) {
3903: my ($entry,@stat)=split(/&/,$_);
3904: $allusers{$entry}=1;
3905: }
3906: }
1.191 harris41 3907: }
1.253 stredwic 3908: }
3909: my $alluserstr='';
3910: foreach (sort keys %allusers) {
3911: $alluserstr.=$_.'&user:';
3912: }
3913: $alluserstr=~s/:$//;
3914: return split(/:/,$alluserstr);
3915: } else {
3916: my @emptyResults = ();
3917: push(@emptyResults, 'missing user name');
3918: return split(':',@emptyResults);
3919: }
3920: } elsif(!defined($alternateDirectoryRoot)) {
3921: my $tryserver;
3922: my %alldom=();
3923: foreach $tryserver (keys %libserv) {
3924: $alldom{$hostdom{$tryserver}}=1;
3925: }
3926: my $alldomstr='';
3927: foreach (sort keys %alldom) {
1.397 albertel 3928: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'/&domain:';
1.253 stredwic 3929: }
3930: $alldomstr=~s/:$//;
3931: return split(/:/,$alldomstr);
3932: } else {
3933: my @emptyResults = ();
3934: push(@emptyResults, 'missing domain');
3935: return split(':',@emptyResults);
1.275 stredwic 3936: }
3937: }
3938:
3939: # --------------------------------------------- GetFileTimestamp
3940: # This function utilizes dirlist and returns the date stamp for
3941: # when it was last modified. It will also return an error of -1
3942: # if an error occurs
3943:
1.410 matthew 3944: ##
3945: ## FIXME: This subroutine assumes its caller knows something about the
3946: ## directory structure of the home server for the student ($root).
3947: ## Not a good assumption to make. Since this is for looking up files
3948: ## in user directories, the full path should be constructed by lond, not
3949: ## whatever machine we request data from.
3950: ##
1.275 stredwic 3951: sub GetFileTimestamp {
3952: my ($studentDomain,$studentName,$filename,$root)=@_;
3953: $studentDomain=~s/\W//g;
3954: $studentName=~s/\W//g;
3955: my $subdir=$studentName.'__';
3956: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3957: my $proname="$studentDomain/$subdir/$studentName";
3958: $proname .= '/'.$filename;
1.375 matthew 3959: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
3960: $studentName, $root);
1.275 stredwic 3961: my @stats = split('&', $fileStat);
3962: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
1.375 matthew 3963: # @stats contains first the filename, then the stat output
3964: return $stats[10]; # so this is 10 instead of 9.
1.275 stredwic 3965: } else {
3966: return -1;
1.253 stredwic 3967: }
1.26 www 3968: }
3969:
3970: # -------------------------------------------------------- Value of a Condition
3971:
1.40 www 3972: sub directcondval {
3973: my $number=shift;
1.555 albertel 3974: if (!defined($ENV{'user.state.'.$ENV{'request.course.id'}})) {
3975: &Apache::lonuserstate::evalstate();
3976: }
1.40 www 3977: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
3978: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
3979: } else {
3980: return 2;
3981: }
3982: }
3983:
1.26 www 3984: sub condval {
3985: my $condidx=shift;
3986: my $result=0;
1.54 www 3987: my $allpathcond='';
1.191 harris41 3988: foreach (split(/\|/,$condidx)) {
1.54 www 3989: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
3990: $allpathcond.=
3991: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
3992: }
1.191 harris41 3993: }
1.54 www 3994: $allpathcond=~s/\|$//;
1.33 www 3995: if ($ENV{'request.course.id'}) {
1.54 www 3996: if ($allpathcond) {
1.26 www 3997: my $operand='|';
3998: my @stack;
1.191 harris41 3999: foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {
1.26 www 4000: if ($_ eq '(') {
4001: push @stack,($operand,$result)
4002: } elsif ($_ eq ')') {
4003: my $before=pop @stack;
4004: if (pop @stack eq '&') {
4005: $result=$result>$before?$before:$result;
4006: } else {
4007: $result=$result>$before?$result:$before;
4008: }
4009: } elsif (($_ eq '&') || ($_ eq '|')) {
4010: $operand=$_;
4011: } else {
1.40 www 4012: my $new=directcondval($_);
1.26 www 4013: if ($operand eq '&') {
4014: $result=$result>$new?$new:$result;
4015: } else {
4016: $result=$result>$new?$result:$new;
1.191 harris41 4017: }
1.26 www 4018: }
1.191 harris41 4019: }
1.26 www 4020: }
4021: }
4022: return $result;
1.421 albertel 4023: }
4024:
4025: # ---------------------------------------------------- Devalidate courseresdata
4026:
4027: sub devalidatecourseresdata {
4028: my ($coursenum,$coursedomain)=@_;
4029: my $hashid=$coursenum.':'.$coursedomain;
1.428 albertel 4030: &devalidate_cache(\%courseresdatacache,$hashid,'courseres');
1.28 www 4031: }
4032:
1.200 www 4033: # --------------------------------------------------- Course Resourcedata Query
4034:
4035: sub courseresdata {
4036: my ($coursenum,$coursedomain,@which)=@_;
4037: my $coursehom=&homeserver($coursenum,$coursedomain);
4038: my $hashid=$coursenum.':'.$coursedomain;
1.425 albertel 4039: my ($result,$cached)=&is_cached(\%courseresdatacache,$hashid,'courseres');
1.417 albertel 4040: unless (defined($cached)) {
1.251 albertel 4041: my %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
1.417 albertel 4042: $result=\%dumpreply;
1.251 albertel 4043: my ($tmp) = keys(%dumpreply);
4044: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
1.425 albertel 4045: &do_cache(\%courseresdatacache,$hashid,$result,'courseres');
1.306 albertel 4046: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
4047: return $tmp;
1.416 albertel 4048: } elsif ($tmp =~ /^(error)/) {
1.417 albertel 4049: $result=undef;
1.425 albertel 4050: &do_cache(\%courseresdatacache,$hashid,$result,'courseres');
1.250 albertel 4051: }
4052: }
1.251 albertel 4053: foreach my $item (@which) {
1.417 albertel 4054: if (defined($result->{$item})) {
4055: return $result->{$item};
1.251 albertel 4056: }
1.250 albertel 4057: }
1.291 albertel 4058: return undef;
1.200 www 4059: }
4060:
1.379 matthew 4061: #
4062: # EXT resource caching routines
4063: #
4064:
4065: sub clear_EXT_cache_status {
1.383 albertel 4066: &delenv('cache.EXT.');
1.379 matthew 4067: }
4068:
4069: sub EXT_cache_status {
4070: my ($target_domain,$target_user) = @_;
1.383 albertel 4071: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.389 www 4072: if (exists($ENV{$cachename}) && ($ENV{$cachename}+600) > time) {
1.379 matthew 4073: # We know already the user has no data
4074: return 1;
4075: } else {
4076: return 0;
4077: }
4078: }
4079:
4080: sub EXT_cache_set {
4081: my ($target_domain,$target_user) = @_;
1.383 albertel 4082: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.379 matthew 4083: &appenv($cachename => time);
4084: }
4085:
1.28 www 4086: # --------------------------------------------------------- Value of a Variable
1.58 www 4087: sub EXT {
1.395 albertel 4088: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
1.218 albertel 4089:
1.68 www 4090: unless ($varname) { return ''; }
1.218 albertel 4091: #get real user name/domain, courseid and symb
4092: my $courseid;
1.359 albertel 4093: my $publicuser;
1.427 www 4094: if ($symbparm) {
4095: $symbparm=&get_symb_from_alias($symbparm);
4096: }
1.218 albertel 4097: if (!($uname && $udom)) {
1.360 albertel 4098: (my $cursymb,$courseid,$udom,$uname,$publicuser)=
1.378 matthew 4099: &Apache::lonxml::whichuser($symbparm);
1.218 albertel 4100: if (!$symbparm) { $symbparm=$cursymb; }
4101: } else {
4102: $courseid=$ENV{'request.course.id'};
4103: }
1.48 www 4104: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
4105: my $rest;
1.320 albertel 4106: if (defined($therest[0])) {
1.48 www 4107: $rest=join('.',@therest);
4108: } else {
4109: $rest='';
4110: }
1.320 albertel 4111:
1.57 www 4112: my $qualifierrest=$qualifier;
4113: if ($rest) { $qualifierrest.='.'.$rest; }
4114: my $spacequalifierrest=$space;
4115: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 4116: if ($realm eq 'user') {
1.48 www 4117: # --------------------------------------------------------------- user.resource
4118: if ($space eq 'resource') {
1.335 albertel 4119: if (defined($Apache::lonhomework::parsing_a_problem)) {
4120: return $Apache::lonhomework::history{$qualifierrest};
4121: } else {
1.359 albertel 4122: my %restored;
4123: if ($publicuser || $ENV{'request.state'} eq 'construct') {
4124: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
4125: } else {
4126: %restored=&restore($symbparm,$courseid,$udom,$uname);
4127: }
1.335 albertel 4128: return $restored{$qualifierrest};
4129: }
1.48 www 4130: # ----------------------------------------------------------------- user.access
4131: } elsif ($space eq 'access') {
1.218 albertel 4132: # FIXME - not supporting calls for a specific user
1.48 www 4133: return &allowed($qualifier,$rest);
4134: # ------------------------------------------ user.preferences, user.environment
4135: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.218 albertel 4136: if (($uname eq $ENV{'user.name'}) &&
4137: ($udom eq $ENV{'user.domain'})) {
4138: return $ENV{join('.',('environment',$qualifierrest))};
4139: } else {
1.359 albertel 4140: my %returnhash;
4141: if (!$publicuser) {
4142: %returnhash=&userenvironment($udom,$uname,
4143: $qualifierrest);
4144: }
1.218 albertel 4145: return $returnhash{$qualifierrest};
4146: }
1.48 www 4147: # ----------------------------------------------------------------- user.course
4148: } elsif ($space eq 'course') {
1.218 albertel 4149: # FIXME - not supporting calls for a specific user
1.48 www 4150: return $ENV{join('.',('request.course',$qualifier))};
4151: # ------------------------------------------------------------------- user.role
4152: } elsif ($space eq 'role') {
1.218 albertel 4153: # FIXME - not supporting calls for a specific user
1.48 www 4154: my ($role,$where)=split(/\./,$ENV{'request.role'});
4155: if ($qualifier eq 'value') {
4156: return $role;
4157: } elsif ($qualifier eq 'extent') {
4158: return $where;
4159: }
4160: # ----------------------------------------------------------------- user.domain
4161: } elsif ($space eq 'domain') {
1.218 albertel 4162: return $udom;
1.48 www 4163: # ------------------------------------------------------------------- user.name
4164: } elsif ($space eq 'name') {
1.218 albertel 4165: return $uname;
1.48 www 4166: # ---------------------------------------------------- Any other user namespace
1.29 www 4167: } else {
1.359 albertel 4168: my %reply;
4169: if (!$publicuser) {
4170: %reply=&get($space,[$qualifierrest],$udom,$uname);
4171: }
4172: return $reply{$qualifierrest};
1.48 www 4173: }
1.236 www 4174: } elsif ($realm eq 'query') {
4175: # ---------------------------------------------- pull stuff out of query string
1.384 albertel 4176: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
4177: [$spacequalifierrest]);
1.376 albertel 4178: return $ENV{'form.'.$spacequalifierrest};
1.236 www 4179: } elsif ($realm eq 'request') {
1.48 www 4180: # ------------------------------------------------------------- request.browser
4181: if ($space eq 'browser') {
1.430 www 4182: if ($qualifier eq 'textremote') {
4183: if (&mt('textual_remote_display') eq 'on') {
4184: return 1;
4185: } else {
4186: return 0;
4187: }
4188: } else {
4189: return $ENV{'browser.'.$qualifier};
4190: }
1.57 www 4191: # ------------------------------------------------------------ request.filename
4192: } else {
4193: return $ENV{'request.'.$spacequalifierrest};
1.29 www 4194: }
1.28 www 4195: } elsif ($realm eq 'course') {
1.48 www 4196: # ---------------------------------------------------------- course.description
1.218 albertel 4197: return $ENV{'course.'.$courseid.'.'.$spacequalifierrest};
1.57 www 4198: } elsif ($realm eq 'resource') {
1.165 www 4199:
1.395 albertel 4200: my $section;
1.359 albertel 4201: if (defined($courseid) && $courseid eq $ENV{'request.course.id'}) {
1.539 albertel 4202: if (!$symbparm) { $symbparm=&symbread(); }
4203: }
4204: if ($symbparm && defined($courseid) &&
4205: $courseid eq $ENV{'request.course.id'}) {
1.165 www 4206:
1.218 albertel 4207: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
1.165 www 4208:
1.60 www 4209: # ----------------------------------------------------- Cascading lookup scheme
1.218 albertel 4210: my $symbp=$symbparm;
1.409 www 4211: my $mapp=(&decode_symb($symbp))[0];
1.218 albertel 4212:
4213: my $symbparm=$symbp.'.'.$spacequalifierrest;
4214: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
4215:
4216: if (($ENV{'user.name'} eq $uname) &&
4217: ($ENV{'user.domain'} eq $udom)) {
1.255 albertel 4218: $section=$ENV{'request.course.sec'};
1.218 albertel 4219: } else {
1.539 albertel 4220: if (! defined($usection)) {
1.551 albertel 4221: $section=&getsection($udom,$uname,$courseid);
1.539 albertel 4222: } else {
4223: $section = $usection;
4224: }
1.218 albertel 4225: }
4226:
4227: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
4228: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
4229: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
4230:
4231: my $courselevel=$courseid.'.'.$spacequalifierrest;
4232: my $courselevelr=$courseid.'.'.$symbparm;
4233: my $courselevelm=$courseid.'.'.$mapparm;
1.69 www 4234:
1.60 www 4235: # ----------------------------------------------------------- first, check user
1.379 matthew 4236: #most student don\'t have any data set, check if there is some data
4237: if (! &EXT_cache_status($udom,$uname)) {
1.420 albertel 4238: my $hashid="$udom:$uname";
1.425 albertel 4239: my ($result,$cached)=&is_cached(\%userresdatacache,$hashid,
4240: 'userres');
1.454 albertel 4241: if (!defined($cached)) {
4242: my %resourcedata=&dump('resourcedata',$udom,$uname);
1.420 albertel 4243: $result=\%resourcedata;
1.425 albertel 4244: &do_cache(\%userresdatacache,$hashid,$result,'userres');
1.420 albertel 4245: }
4246: my ($tmp)=keys(%$result);
1.308 albertel 4247: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
1.420 albertel 4248: if ($$result{$courselevelr}) {
4249: return $$result{$courselevelr}; }
4250: if ($$result{$courselevelm}) {
4251: return $$result{$courselevelm}; }
4252: if ($$result{$courselevel}) {
4253: return $$result{$courselevel}; }
1.308 albertel 4254: } else {
1.459 albertel 4255: #error 2 occurs when the .db doesn't exist
4256: if ($tmp!~/error: 2 /) {
1.308 albertel 4257: &logthis("<font color=blue>WARNING:".
4258: " Trying to get resource data for ".
4259: $uname." at ".$udom.": ".
4260: $tmp."</font>");
1.459 albertel 4261: } elsif ($tmp=~/error: 2 /) {
1.539 albertel 4262: &EXT_cache_set($udom,$uname);
1.308 albertel 4263: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
4264: return $tmp;
4265: }
1.218 albertel 4266: }
4267: }
1.95 www 4268:
1.60 www 4269: # -------------------------------------------------------- second, check course
1.96 www 4270:
1.218 albertel 4271: my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},
1.539 albertel 4272: $ENV{'course.'.$courseid.'.domain'},
4273: ($seclevelr,$seclevelm,$seclevel,
4274: $courselevelr,$courselevelm,
4275: $courselevel));
1.287 albertel 4276: if (defined($coursereply)) { return $coursereply; }
1.200 www 4277:
1.60 www 4278: # ------------------------------------------------------ third, check map parms
1.218 albertel 4279: my %parmhash=();
4280: my $thisparm='';
4281: if (tie(%parmhash,'GDBM_File',
4282: $ENV{'request.course.fn'}.'_parms.db',
1.256 albertel 4283: &GDBM_READER(),0640)) {
1.218 albertel 4284: $thisparm=$parmhash{$symbparm};
4285: untie(%parmhash);
4286: }
4287: if ($thisparm) { return $thisparm; }
4288: }
1.60 www 4289: # --------------------------------------------- last, look in resource metadata
1.71 www 4290:
1.218 albertel 4291: $spacequalifierrest=~s/\./\_/;
1.282 albertel 4292: my $filename;
4293: if (!$symbparm) { $symbparm=&symbread(); }
4294: if ($symbparm) {
1.409 www 4295: $filename=(&decode_symb($symbparm))[2];
1.282 albertel 4296: } else {
4297: $filename=$ENV{'request.filename'};
4298: }
4299: my $metadata=&metadata($filename,$spacequalifierrest);
1.288 albertel 4300: if (defined($metadata)) { return $metadata; }
1.282 albertel 4301: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
1.288 albertel 4302: if (defined($metadata)) { return $metadata; }
1.142 www 4303:
1.145 www 4304: # ------------------------------------------------------------------ Cascade up
1.218 albertel 4305: unless ($space eq '0') {
1.336 albertel 4306: my @parts=split(/_/,$space);
4307: my $id=pop(@parts);
4308: my $part=join('_',@parts);
4309: if ($part eq '') { $part='0'; }
4310: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
1.395 albertel 4311: $symbparm,$udom,$uname,$section,1);
1.337 albertel 4312: if (defined($partgeneral)) { return $partgeneral; }
1.218 albertel 4313: }
1.395 albertel 4314: if ($recurse) { return undef; }
4315: my $pack_def=&packages_tab_default($filename,$varname);
4316: if (defined($pack_def)) { return $pack_def; }
1.71 www 4317:
1.48 www 4318: # ---------------------------------------------------- Any other user namespace
4319: } elsif ($realm eq 'environment') {
4320: # ----------------------------------------------------------------- environment
1.219 albertel 4321: if (($uname eq $ENV{'user.name'})&&($udom eq $ENV{'user.domain'})) {
4322: return $ENV{'environment.'.$spacequalifierrest};
4323: } else {
4324: my %returnhash=&userenvironment($udom,$uname,
4325: $spacequalifierrest);
4326: return $returnhash{$spacequalifierrest};
4327: }
1.28 www 4328: } elsif ($realm eq 'system') {
1.48 www 4329: # ----------------------------------------------------------------- system.time
4330: if ($space eq 'time') {
4331: return time;
4332: }
1.28 www 4333: }
1.48 www 4334: return '';
1.61 www 4335: }
4336:
1.395 albertel 4337: sub packages_tab_default {
4338: my ($uri,$varname)=@_;
4339: my (undef,$part,$name)=split(/\./,$varname);
4340: my $packages=&metadata($uri,'packages');
4341: foreach my $package (split(/,/,$packages)) {
4342: my ($pack_type,$pack_part)=split(/_/,$package,2);
1.468 albertel 4343: if (defined($packagetab{"$pack_type&$name&default"})) {
4344: return $packagetab{"$pack_type&$name&default"};
4345: }
4346: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
4347: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
1.395 albertel 4348: }
4349: }
4350: return undef;
4351: }
4352:
1.334 albertel 4353: sub add_prefix_and_part {
4354: my ($prefix,$part)=@_;
4355: my $keyroot;
4356: if (defined($prefix) && $prefix !~ /^__/) {
4357: # prefix that has a part already
4358: $keyroot=$prefix;
4359: } elsif (defined($prefix)) {
4360: # prefix that is missing a part
4361: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
4362: } else {
4363: # no prefix at all
4364: if (defined($part)) { $keyroot='_'.$part; }
4365: }
4366: return $keyroot;
4367: }
4368:
1.71 www 4369: # ---------------------------------------------------------------- Get metadata
4370:
4371: sub metadata {
1.176 www 4372: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
1.71 www 4373: $uri=&declutter($uri);
1.288 albertel 4374: # if it is a non metadata possible uri return quickly
1.529 albertel 4375: if (($uri eq '') ||
4376: (($uri =~ m|^/*adm/|) &&
4377: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
1.423 albertel 4378: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
1.489 albertel 4379: ($uri =~ m|home/[^/]+/public_html/|)) {
1.468 albertel 4380: return undef;
1.288 albertel 4381: }
1.73 www 4382: my $filename=$uri;
4383: $uri=~s/\.meta$//;
1.172 www 4384: #
4385: # Is the metadata already cached?
1.177 www 4386: # Look at timestamp of caching
1.172 www 4387: # Everything is cached by the main uri, libraries are never directly cached
4388: #
1.428 albertel 4389: if (!defined($liburi)) {
4390: my ($result,$cached)=&is_cached(\%metacache,$uri,'meta');
4391: if (defined($cached)) { return $result->{':'.$what}; }
4392: }
4393: {
1.172 www 4394: #
4395: # Is this a recursive call for a library?
4396: #
1.453 albertel 4397: if (! exists($metacache{$uri})) {
4398: $metacache{$uri}={};
4399: }
1.171 www 4400: if ($liburi) {
4401: $liburi=&declutter($liburi);
4402: $filename=$liburi;
1.401 bowersj2 4403: } else {
1.428 albertel 4404: &devalidate_cache(\%metacache,$uri,'meta');
1.401 bowersj2 4405: }
1.140 www 4406: my %metathesekeys=();
1.73 www 4407: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
1.489 albertel 4408: my $metastring;
4409: if ($uri !~ m|^uploaded/|) {
1.543 albertel 4410: my $file=&filelocation('',&clutter($filename));
4411: push(@{$metacache{$uri.'.file'}},$file);
4412: $metastring=&getfile($file);
1.489 albertel 4413: }
1.208 albertel 4414: my $parser=HTML::LCParser->new(\$metastring);
1.71 www 4415: my $token;
1.140 www 4416: undef %metathesekeys;
1.71 www 4417: while ($token=$parser->get_token) {
1.339 albertel 4418: if ($token->[0] eq 'S') {
4419: if (defined($token->[2]->{'package'})) {
1.172 www 4420: #
4421: # This is a package - get package info
4422: #
1.339 albertel 4423: my $package=$token->[2]->{'package'};
4424: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
4425: if (defined($token->[2]->{'id'})) {
4426: $keyroot.='_'.$token->[2]->{'id'};
4427: }
1.453 albertel 4428: if ($metacache{$uri}->{':packages'}) {
4429: $metacache{$uri}->{':packages'}.=','.$package.$keyroot;
1.339 albertel 4430: } else {
1.453 albertel 4431: $metacache{$uri}->{':packages'}=$package.$keyroot;
1.339 albertel 4432: }
4433: foreach (keys %packagetab) {
1.432 albertel 4434: my $part=$keyroot;
4435: $part=~s/^\_//;
4436: if ($_=~/^\Q$package\E\&/ ||
4437: $_=~/^\Q$package\E_0\&/) {
1.339 albertel 4438: my ($pack,$name,$subp)=split(/\&/,$_);
1.395 albertel 4439: # ignore package.tab specified default values
4440: # here &package_tab_default() will fetch those
4441: if ($subp eq 'default') { next; }
1.339 albertel 4442: my $value=$packagetab{$_};
1.432 albertel 4443: my $unikey;
4444: if ($pack =~ /_0$/) {
4445: $unikey='parameter_0_'.$name;
4446: $part=0;
4447: } else {
4448: $unikey='parameter'.$keyroot.'_'.$name;
4449: }
1.339 albertel 4450: if ($subp eq 'display') {
4451: $value.=' [Part: '.$part.']';
4452: }
1.453 albertel 4453: $metacache{$uri}->{':'.$unikey.'.part'}=$part;
1.395 albertel 4454: $metathesekeys{$unikey}=1;
1.453 albertel 4455: unless (defined($metacache{$uri}->{':'.$unikey.'.'.$subp})) {
4456: $metacache{$uri}->{':'.$unikey.'.'.$subp}=$value;
1.339 albertel 4457: }
1.453 albertel 4458: if (defined($metacache{$uri}->{':'.$unikey.'.default'})) {
4459: $metacache{$uri}->{':'.$unikey}=
4460: $metacache{$uri}->{':'.$unikey.'.default'};
1.356 albertel 4461: }
1.339 albertel 4462: }
4463: }
4464: } else {
1.172 www 4465: #
4466: # This is not a package - some other kind of start tag
1.339 albertel 4467: #
4468: my $entry=$token->[1];
4469: my $unikey;
4470: if ($entry eq 'import') {
4471: $unikey='';
4472: } else {
4473: $unikey=$entry;
4474: }
4475: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
4476:
4477: if (defined($token->[2]->{'id'})) {
4478: $unikey.='_'.$token->[2]->{'id'};
4479: }
1.175 www 4480:
1.339 albertel 4481: if ($entry eq 'import') {
1.175 www 4482: #
4483: # Importing a library here
1.339 albertel 4484: #
4485: if ($depthcount<20) {
4486: my $location=$parser->get_text('/import');
4487: my $dir=$filename;
4488: $dir=~s|[^/]*$||;
4489: $location=&filelocation($dir,$location);
4490: foreach (sort(split(/\,/,&metadata($uri,'keys',
4491: $location,$unikey,
4492: $depthcount+1)))) {
1.453 albertel 4493: $metacache{$uri}->{':'.$_}=$metacache{$uri}->{':'.$_};
1.339 albertel 4494: $metathesekeys{$_}=1;
4495: }
4496: }
4497: } else {
4498:
4499: if (defined($token->[2]->{'name'})) {
4500: $unikey.='_'.$token->[2]->{'name'};
4501: }
4502: $metathesekeys{$unikey}=1;
4503: foreach (@{$token->[3]}) {
1.453 albertel 4504: $metacache{$uri}->{':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.339 albertel 4505: }
4506: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
1.453 albertel 4507: my $default=$metacache{$uri}->{':'.$unikey.'.default'};
1.339 albertel 4508: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
4509: # only ws inside the tag, and not in default, so use default
4510: # as value
1.453 albertel 4511: $metacache{$uri}->{':'.$unikey}=$default;
1.339 albertel 4512: } else {
1.321 albertel 4513: # either something interesting inside the tag or default
4514: # uninteresting
1.453 albertel 4515: $metacache{$uri}->{':'.$unikey}=$internaltext;
1.339 albertel 4516: }
1.172 www 4517: # end of not-a-package not-a-library import
1.339 albertel 4518: }
1.172 www 4519: # end of not-a-package start tag
1.339 albertel 4520: }
1.172 www 4521: # the next is the end of "start tag"
1.339 albertel 4522: }
4523: }
1.483 albertel 4524: my ($extension) = ($uri =~ /\.(\w+)$/);
4525: foreach my $key (sort(keys(%packagetab))) {
4526: #&logthis("extsion1 $extension $key !!");
4527: #no specific packages #how's our extension
4528: if ($key!~/^extension_\Q$extension\E&/) { next; }
1.488 albertel 4529: &metadata_create_package_def($uri,$key,'extension_'.$extension,
1.483 albertel 4530: \%metathesekeys);
4531: }
4532: if (!exists($metacache{$uri}->{':packages'})) {
4533: foreach my $key (sort(keys(%packagetab))) {
4534: #no specific packages well let's get default then
4535: if ($key!~/^default&/) { next; }
1.488 albertel 4536: &metadata_create_package_def($uri,$key,'default',
1.483 albertel 4537: \%metathesekeys);
4538: }
4539: }
1.338 www 4540: # are there custom rights to evaluate
1.453 albertel 4541: if ($metacache{$uri}->{':copyright'} eq 'custom') {
1.339 albertel 4542:
1.338 www 4543: #
4544: # Importing a rights file here
1.339 albertel 4545: #
4546: unless ($depthcount) {
1.453 albertel 4547: my $location=$metacache{$uri}->{':customdistributionfile'};
1.339 albertel 4548: my $dir=$filename;
4549: $dir=~s|[^/]*$||;
4550: $location=&filelocation($dir,$location);
4551: foreach (sort(split(/\,/,&metadata($uri,'keys',
4552: $location,'_rights',
4553: $depthcount+1)))) {
1.453 albertel 4554: $metacache{$uri}->{':'.$_}=$metacache{$uri}->{':'.$_};
1.339 albertel 4555: $metathesekeys{$_}=1;
4556: }
4557: }
4558: }
1.453 albertel 4559: $metacache{$uri}->{':keys'}=join(',',keys %metathesekeys);
4560: &metadata_generate_part0(\%metathesekeys,$metacache{$uri},$uri);
4561: $metacache{$uri}->{':allpossiblekeys'}=join(',',keys %metathesekeys);
4562: &do_cache(\%metacache,$uri,$metacache{$uri},'meta');
1.177 www 4563: # this is the end of "was not already recently cached
1.71 www 4564: }
1.428 albertel 4565: return $metacache{$uri}->{':'.$what};
1.261 albertel 4566: }
4567:
1.488 albertel 4568: sub metadata_create_package_def {
1.483 albertel 4569: my ($uri,$key,$package,$metathesekeys)=@_;
4570: my ($pack,$name,$subp)=split(/\&/,$key);
4571: if ($subp eq 'default') { next; }
4572:
4573: if (defined($metacache{$uri}->{':packages'})) {
4574: $metacache{$uri}->{':packages'}.=','.$package;
4575: } else {
4576: $metacache{$uri}->{':packages'}=$package;
4577: }
4578: my $value=$packagetab{$key};
4579: my $unikey;
4580: $unikey='parameter_0_'.$name;
4581: $metacache{$uri}->{':'.$unikey.'.part'}=0;
4582: $$metathesekeys{$unikey}=1;
4583: unless (defined($metacache{$uri}->{':'.$unikey.'.'.$subp})) {
4584: $metacache{$uri}->{':'.$unikey.'.'.$subp}=$value;
4585: }
4586: if (defined($metacache{$uri}->{':'.$unikey.'.default'})) {
4587: $metacache{$uri}->{':'.$unikey}=
4588: $metacache{$uri}->{':'.$unikey.'.default'};
4589: }
4590: }
4591:
1.261 albertel 4592: sub metadata_generate_part0 {
4593: my ($metadata,$metacache,$uri) = @_;
4594: my %allnames;
4595: foreach my $metakey (sort keys %$metadata) {
4596: if ($metakey=~/^parameter\_(.*)/) {
1.428 albertel 4597: my $part=$$metacache{':'.$metakey.'.part'};
4598: my $name=$$metacache{':'.$metakey.'.name'};
1.356 albertel 4599: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
1.261 albertel 4600: $allnames{$name}=$part;
4601: }
4602: }
4603: }
4604: foreach my $name (keys(%allnames)) {
4605: $$metadata{"parameter_0_$name"}=1;
1.428 albertel 4606: my $key=":parameter_0_$name";
1.261 albertel 4607: $$metacache{"$key.part"}='0';
4608: $$metacache{"$key.name"}=$name;
1.428 albertel 4609: $$metacache{"$key.type"}=$$metacache{':parameter_'.
1.261 albertel 4610: $allnames{$name}.'_'.$name.
4611: '.type'};
1.428 albertel 4612: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
1.261 albertel 4613: '.display'};
4614: my $expr='\\[Part: '.$allnames{$name}.'\\]';
1.479 albertel 4615: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
1.261 albertel 4616: $$metacache{"$key.display"}=$olddis;
4617: }
1.71 www 4618: }
4619:
1.301 www 4620: # ------------------------------------------------- Get the title of a resource
4621:
4622: sub gettitle {
4623: my $urlsymb=shift;
4624: my $symb=&symbread($urlsymb);
1.534 albertel 4625: if ($symb) {
4626: my ($result,$cached)=&is_cached(\%titlecache,$symb,'title',600);
4627: if (defined($cached)) { return $result; }
4628: my ($map,$resid,$url)=&decode_symb($symb);
4629: my $title='';
4630: my %bighash;
4631: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
4632: &GDBM_READER(),0640)) {
4633: my $mapid=$bighash{'map_pc_'.&clutter($map)};
4634: $title=$bighash{'title_'.$mapid.'.'.$resid};
4635: untie %bighash;
4636: }
4637: $title=~s/\&colon\;/\:/gs;
4638: if ($title) {
4639: return &do_cache(\%titlecache,$symb,$title,'title');
4640: }
4641: $urlsymb=$url;
4642: }
4643: my $title=&metadata($urlsymb,'title');
4644: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
4645: return $title;
1.301 www 4646: }
4647:
1.31 www 4648: # ------------------------------------------------- Update symbolic store links
4649:
4650: sub symblist {
4651: my ($mapname,%newhash)=@_;
1.438 www 4652: $mapname=&deversion(&declutter($mapname));
1.31 www 4653: my %hash;
4654: if (($ENV{'request.course.fn'}) && (%newhash)) {
4655: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1.256 albertel 4656: &GDBM_WRCREAT(),0640)) {
1.191 harris41 4657: foreach (keys %newhash) {
1.438 www 4658: $hash{declutter($_)}=$mapname.'___'.&deversion($newhash{$_});
1.191 harris41 4659: }
1.31 www 4660: if (untie(%hash)) {
4661: return 'ok';
4662: }
4663: }
4664: }
4665: return 'error';
1.212 www 4666: }
4667:
4668: # --------------------------------------------------------------- Verify a symb
4669:
4670: sub symbverify {
1.510 www 4671: my ($symb,$thisurl)=@_;
4672: my $thisfn=$thisurl;
4673: # wrapper not part of symbs
4674: $thisfn=~s/^\/adm\/wrapper//;
1.439 www 4675: $thisfn=&declutter($thisfn);
1.215 www 4676: # direct jump to resource in page or to a sequence - will construct own symbs
4677: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
4678: # check URL part
1.409 www 4679: my ($map,$resid,$url)=&decode_symb($symb);
1.439 www 4680:
1.431 www 4681: unless ($url eq $thisfn) { return 0; }
1.213 www 4682:
1.216 www 4683: $symb=&symbclean($symb);
1.510 www 4684: $thisurl=&deversion($thisurl);
1.439 www 4685: $thisfn=&deversion($thisfn);
1.213 www 4686:
4687: my %bighash;
4688: my $okay=0;
1.431 www 4689:
1.213 www 4690: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.256 albertel 4691: &GDBM_READER(),0640)) {
1.510 www 4692: my $ids=$bighash{'ids_'.&clutter($thisurl)};
1.216 www 4693: unless ($ids) {
1.510 www 4694: $ids=$bighash{'ids_/'.$thisurl};
1.216 www 4695: }
4696: if ($ids) {
4697: # ------------------------------------------------------------------- Has ID(s)
4698: foreach (split(/\,/,$ids)) {
4699: my ($mapid,$resid)=split(/\./,$_);
4700: if (
4701: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
4702: eq $symb) {
4703: $okay=1;
4704: }
4705: }
4706: }
1.213 www 4707: untie(%bighash);
4708: }
4709: return $okay;
1.31 www 4710: }
4711:
1.210 www 4712: # --------------------------------------------------------------- Clean-up symb
4713:
4714: sub symbclean {
4715: my $symb=shift;
1.568 albertel 4716: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
1.210 www 4717: # remove version from map
4718: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
1.215 www 4719:
1.210 www 4720: # remove version from URL
4721: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
1.213 www 4722:
1.507 www 4723: # remove wrapper
4724:
1.510 www 4725: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
1.210 www 4726: return $symb;
1.409 www 4727: }
4728:
4729: # ---------------------------------------------- Split symb to find map and url
1.429 albertel 4730:
4731: sub encode_symb {
4732: my ($map,$resid,$url)=@_;
4733: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
4734: }
1.409 www 4735:
4736: sub decode_symb {
1.568 albertel 4737: my $symb=shift;
4738: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
4739: my ($map,$resid,$url)=split(/___/,$symb);
1.413 www 4740: return (&fixversion($map),$resid,&fixversion($url));
4741: }
4742:
4743: sub fixversion {
4744: my $fn=shift;
4745: if ($fn=~/^(adm|uploaded|public)/) { return $fn; }
1.435 www 4746: my %bighash;
4747: my $uri=&clutter($fn);
1.440 www 4748: my $key=$ENV{'request.course.id'}.'_'.$uri;
4749: # is this cached?
4750: my ($result,$cached)=&is_cached(\%courseresversioncache,$key,
4751: 'courseresversion',600);
4752: if (defined($cached)) { return $result; }
4753: # unfortunately not cached, or expired
1.435 www 4754: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.440 www 4755: &GDBM_READER(),0640)) {
4756: if ($bighash{'version_'.$uri}) {
4757: my $version=$bighash{'version_'.$uri};
1.444 www 4758: unless (($version eq 'mostrecent') ||
4759: ($version==&getversion($uri))) {
1.440 www 4760: $uri=~s/\.(\w+)$/\.$version\.$1/;
4761: }
4762: }
4763: untie %bighash;
1.413 www 4764: }
1.440 www 4765: return &do_cache
4766: (\%courseresversioncache,$key,&declutter($uri),'courseresversion');
1.438 www 4767: }
4768:
4769: sub deversion {
4770: my $url=shift;
4771: $url=~s/\.\d+\.(\w+)$/\.$1/;
4772: return $url;
1.210 www 4773: }
4774:
1.31 www 4775: # ------------------------------------------------------ Return symb list entry
4776:
4777: sub symbread {
1.249 www 4778: my ($thisfn,$donotrecurse)=@_;
1.542 albertel 4779: my $cache_str='request.symbread.cached.'.$thisfn;
4780: if (defined($ENV{$cache_str})) { return $ENV{$cache_str}; }
1.242 www 4781: # no filename provided? try from environment
1.44 www 4782: unless ($thisfn) {
1.539 albertel 4783: if ($ENV{'request.symb'}) {
1.542 albertel 4784: return $ENV{$cache_str}=&symbclean($ENV{'request.symb'});
1.539 albertel 4785: }
1.44 www 4786: $thisfn=$ENV{'request.filename'};
4787: }
1.569 albertel 4788: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
1.242 www 4789: # is that filename actually a symb? Verify, clean, and return
4790: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
1.539 albertel 4791: if (&symbverify($thisfn,$1)) {
1.542 albertel 4792: return $ENV{$cache_str}=&symbclean($thisfn);
1.539 albertel 4793: }
1.242 www 4794: }
1.44 www 4795: $thisfn=declutter($thisfn);
1.31 www 4796: my %hash;
1.37 www 4797: my %bighash;
4798: my $syval='';
1.45 www 4799: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.481 raeburn 4800: my $targetfn = $thisfn;
4801: if ( ($thisfn =~ m/^uploaded\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
4802: $targetfn = 'adm/wrapper/'.$thisfn;
4803: }
1.31 www 4804: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1.256 albertel 4805: &GDBM_READER(),0640)) {
1.481 raeburn 4806: $syval=$hash{$targetfn};
1.37 www 4807: untie(%hash);
4808: }
4809: # ---------------------------------------------------------- There was an entry
4810: if ($syval) {
4811: unless ($syval=~/\_\d+$/) {
4812: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.44 www 4813: &appenv('request.ambiguous' => $thisfn);
1.542 albertel 4814: return $ENV{$cache_str}='';
1.37 www 4815: }
4816: $syval.=$1;
4817: }
4818: } else {
4819: # ------------------------------------------------------- Was not in symb table
4820: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.256 albertel 4821: &GDBM_READER(),0640)) {
1.37 www 4822: # ---------------------------------------------- Get ID(s) for current resource
1.280 www 4823: my $ids=$bighash{'ids_'.&clutter($thisfn)};
1.65 www 4824: unless ($ids) {
4825: $ids=$bighash{'ids_/'.$thisfn};
1.242 www 4826: }
4827: unless ($ids) {
4828: # alias?
4829: $ids=$bighash{'mapalias_'.$thisfn};
1.65 www 4830: }
1.37 www 4831: if ($ids) {
4832: # ------------------------------------------------------------------- Has ID(s)
4833: my @possibilities=split(/\,/,$ids);
1.39 www 4834: if ($#possibilities==0) {
4835: # ----------------------------------------------- There is only one possibility
1.37 www 4836: my ($mapid,$resid)=split(/\./,$ids);
4837: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
1.249 www 4838: } elsif (!$donotrecurse) {
1.39 www 4839: # ------------------------------------------ There is more than one possibility
4840: my $realpossible=0;
1.191 harris41 4841: foreach (@possibilities) {
1.39 www 4842: my $file=$bighash{'src_'.$_};
4843: if (&allowed('bre',$file)) {
4844: my ($mapid,$resid)=split(/\./,$_);
4845: if ($bighash{'map_type_'.$mapid} ne 'page') {
4846: $realpossible++;
4847: $syval=declutter($bighash{'map_id_'.$mapid}).
4848: '___'.$resid;
4849: }
4850: }
1.191 harris41 4851: }
1.39 www 4852: if ($realpossible!=1) { $syval=''; }
1.249 www 4853: } else {
4854: $syval='';
1.37 www 4855: }
4856: }
4857: untie(%bighash)
1.481 raeburn 4858: }
1.31 www 4859: }
1.62 www 4860: if ($syval) {
1.542 albertel 4861: return $ENV{$cache_str}=&symbclean($syval.'___'.$thisfn);
1.62 www 4862: }
1.31 www 4863: }
1.44 www 4864: &appenv('request.ambiguous' => $thisfn);
1.542 albertel 4865: return $ENV{$cache_str}='';
1.31 www 4866: }
4867:
4868: # ---------------------------------------------------------- Return random seed
4869:
1.32 www 4870: sub numval {
4871: my $txt=shift;
4872: $txt=~tr/A-J/0-9/;
4873: $txt=~tr/a-j/0-9/;
4874: $txt=~tr/K-T/0-9/;
4875: $txt=~tr/k-t/0-9/;
4876: $txt=~tr/U-Z/0-5/;
4877: $txt=~tr/u-z/0-5/;
4878: $txt=~s/\D//g;
1.564 albertel 4879: if ($_64bit) { if ($txt > 2**32) { return -1; } }
1.32 www 4880: return int($txt);
1.368 albertel 4881: }
4882:
1.484 albertel 4883: sub numval2 {
4884: my $txt=shift;
4885: $txt=~tr/A-J/0-9/;
4886: $txt=~tr/a-j/0-9/;
4887: $txt=~tr/K-T/0-9/;
4888: $txt=~tr/k-t/0-9/;
4889: $txt=~tr/U-Z/0-5/;
4890: $txt=~tr/u-z/0-5/;
4891: $txt=~s/\D//g;
4892: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
4893: my $total;
4894: foreach my $val (@txts) { $total+=$val; }
1.564 albertel 4895: if ($_64bit) { if ($total > 2**32) { return -1; } }
1.484 albertel 4896: return int($total);
4897: }
4898:
1.368 albertel 4899: sub latest_rnd_algorithm_id {
1.501 albertel 4900: return '64bit3';
1.366 albertel 4901: }
1.32 www 4902:
1.503 albertel 4903: sub get_rand_alg {
4904: my ($courseid)=@_;
4905: if (!$courseid) { $courseid=(&Apache::lonxml::whichuser())[1]; }
4906: if ($courseid) {
4907: return $ENV{"course.$courseid.rndseed"};
4908: }
4909: return &latest_rnd_algorithm_id();
4910: }
4911:
1.562 albertel 4912: sub validCODE {
4913: my ($CODE)=@_;
4914: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
4915: return 0;
4916: }
4917:
1.491 albertel 4918: sub getCODE {
1.562 albertel 4919: if (&validCODE($ENV{'form.CODE'})) { return $ENV{'form.CODE'}; }
1.491 albertel 4920: if (defined($Apache::lonhomework::parsing_a_problem) &&
1.562 albertel 4921: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
1.491 albertel 4922: return $Apache::lonhomework::history{'resource.CODE'};
4923: }
4924: return undef;
4925: }
4926:
1.31 www 4927: sub rndseed {
1.155 albertel 4928: my ($symb,$courseid,$domain,$username)=@_;
1.366 albertel 4929:
4930: my ($wsymb,$wcourseid,$wdomain,$wusername)=&Apache::lonxml::whichuser();
1.155 albertel 4931: if (!$symb) {
1.366 albertel 4932: unless ($symb=$wsymb) { return time; }
4933: }
4934: if (!$courseid) { $courseid=$wcourseid; }
4935: if (!$domain) { $domain=$wdomain; }
4936: if (!$username) { $username=$wusername }
1.503 albertel 4937: my $which=&get_rand_alg();
1.491 albertel 4938: if (defined(&getCODE())) {
1.484 albertel 4939: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
1.501 albertel 4940: } elsif ($which eq '64bit3') {
4941: return &rndseed_64bit3($symb,$courseid,$domain,$username);
1.443 albertel 4942: } elsif ($which eq '64bit2') {
4943: return &rndseed_64bit2($symb,$courseid,$domain,$username);
1.366 albertel 4944: } elsif ($which eq '64bit') {
4945: return &rndseed_64bit($symb,$courseid,$domain,$username);
4946: }
4947: return &rndseed_32bit($symb,$courseid,$domain,$username);
4948: }
4949:
4950: sub rndseed_32bit {
4951: my ($symb,$courseid,$domain,$username)=@_;
4952: {
4953: use integer;
4954: my $symbchck=unpack("%32C*",$symb) << 27;
4955: my $symbseed=numval($symb) << 22;
4956: my $namechck=unpack("%32C*",$username) << 17;
4957: my $nameseed=numval($username) << 12;
4958: my $domainseed=unpack("%32C*",$domain) << 7;
4959: my $courseseed=unpack("%32C*",$courseid);
4960: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
4961: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
4962: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.564 albertel 4963: if ($_64bit) { $num=(($num<<32)>>32); }
1.366 albertel 4964: return $num;
4965: }
4966: }
4967:
4968: sub rndseed_64bit {
4969: my ($symb,$courseid,$domain,$username)=@_;
4970: {
4971: use integer;
4972: my $symbchck=unpack("%32S*",$symb) << 21;
4973: my $symbseed=numval($symb) << 10;
4974: my $namechck=unpack("%32S*",$username);
4975:
4976: my $nameseed=numval($username) << 21;
4977: my $domainseed=unpack("%32S*",$domain) << 10;
4978: my $courseseed=unpack("%32S*",$courseid);
4979:
4980: my $num1=$symbchck+$symbseed+$namechck;
4981: my $num2=$nameseed+$domainseed+$courseseed;
4982: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
4983: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.564 albertel 4984: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
4985: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
1.366 albertel 4986: return "$num1,$num2";
1.155 albertel 4987: }
1.366 albertel 4988: }
4989:
1.443 albertel 4990: sub rndseed_64bit2 {
4991: my ($symb,$courseid,$domain,$username)=@_;
4992: {
4993: use integer;
4994: # strings need to be an even # of cahracters long, it it is odd the
4995: # last characters gets thrown away
4996: my $symbchck=unpack("%32S*",$symb.' ') << 21;
4997: my $symbseed=numval($symb) << 10;
4998: my $namechck=unpack("%32S*",$username.' ');
4999:
5000: my $nameseed=numval($username) << 21;
1.501 albertel 5001: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5002: my $courseseed=unpack("%32S*",$courseid.' ');
5003:
5004: my $num1=$symbchck+$symbseed+$namechck;
5005: my $num2=$nameseed+$domainseed+$courseseed;
5006: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5007: #&Apache::lonxml::debug("rndseed :$num:$symb");
5008: return "$num1,$num2";
5009: }
5010: }
5011:
5012: sub rndseed_64bit3 {
5013: my ($symb,$courseid,$domain,$username)=@_;
5014: {
5015: use integer;
5016: # strings need to be an even # of cahracters long, it it is odd the
5017: # last characters gets thrown away
5018: my $symbchck=unpack("%32S*",$symb.' ') << 21;
5019: my $symbseed=numval2($symb) << 10;
5020: my $namechck=unpack("%32S*",$username.' ');
5021:
5022: my $nameseed=numval2($username) << 21;
1.443 albertel 5023: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5024: my $courseseed=unpack("%32S*",$courseid.' ');
5025:
5026: my $num1=$symbchck+$symbseed+$namechck;
5027: my $num2=$nameseed+$domainseed+$courseseed;
5028: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
1.564 albertel 5029: #&Apache::lonxml::debug("rndseed :$num1:$num2:$_64bit");
5030: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
5031:
1.503 albertel 5032: return "$num1:$num2";
1.443 albertel 5033: }
5034: }
5035:
1.366 albertel 5036: sub rndseed_CODE_64bit {
5037: my ($symb,$courseid,$domain,$username)=@_;
1.155 albertel 5038: {
1.366 albertel 5039: use integer;
1.443 albertel 5040: my $symbchck=unpack("%32S*",$symb.' ') << 16;
1.484 albertel 5041: my $symbseed=numval2($symb);
1.491 albertel 5042: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
5043: my $CODEseed=numval(&getCODE());
1.443 albertel 5044: my $courseseed=unpack("%32S*",$courseid.' ');
1.484 albertel 5045: my $num1=$symbseed+$CODEchck;
5046: my $num2=$CODEseed+$courseseed+$symbchck;
5047: #&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
1.366 albertel 5048: #&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
1.564 albertel 5049: if ($_64bit) { $num1=(($num1<<32)>>32); }
5050: if ($_64bit) { $num2=(($num2<<32)>>32); }
1.503 albertel 5051: return "$num1:$num2";
1.366 albertel 5052: }
5053: }
5054:
5055: sub setup_random_from_rndseed {
5056: my ($rndseed)=@_;
1.503 albertel 5057: if ($rndseed =~/([,:])/) {
5058: my ($num1,$num2)=split(/[,:]/,$rndseed);
1.366 albertel 5059: &Math::Random::random_set_seed(abs($num1),abs($num2));
5060: } else {
5061: &Math::Random::random_set_seed_from_phrase($rndseed);
1.98 albertel 5062: }
1.36 albertel 5063: }
5064:
1.474 albertel 5065: sub latest_receipt_algorithm_id {
5066: return 'receipt2';
5067: }
5068:
1.480 www 5069: sub recunique {
5070: my $fucourseid=shift;
5071: my $unique;
5072: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2') {
5073: $unique=$ENV{"course.$fucourseid.internal.encseed"};
5074: } else {
5075: $unique=$perlvar{'lonReceipt'};
5076: }
5077: return unpack("%32C*",$unique);
5078: }
5079:
5080: sub recprefix {
5081: my $fucourseid=shift;
5082: my $prefix;
5083: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2') {
5084: $prefix=$ENV{"course.$fucourseid.internal.encpref"};
5085: } else {
5086: $prefix=$perlvar{'lonHostID'};
5087: }
5088: return unpack("%32C*",$prefix);
5089: }
5090:
1.76 www 5091: sub ireceipt {
1.474 albertel 5092: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
1.76 www 5093: my $cuname=unpack("%32C*",$funame);
5094: my $cudom=unpack("%32C*",$fudom);
5095: my $cucourseid=unpack("%32C*",$fucourseid);
5096: my $cusymb=unpack("%32C*",$fusymb);
1.480 www 5097: my $cunique=&recunique($fucourseid);
1.474 albertel 5098: my $cpart=unpack("%32S*",$part);
1.480 www 5099: my $return =&recprefix($fucourseid).'-';
1.474 albertel 5100: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
5101: $ENV{'request.state'} eq 'construct') {
5102: &Apache::lonxml::debug("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname).
5103: " and ".($cpart%$cudom));
5104:
5105: $return.= ($cunique%$cuname+
5106: $cunique%$cudom+
5107: $cusymb%$cuname+
5108: $cusymb%$cudom+
5109: $cucourseid%$cuname+
5110: $cucourseid%$cudom+
5111: $cpart%$cuname+
5112: $cpart%$cudom);
5113: } else {
5114: $return.= ($cunique%$cuname+
5115: $cunique%$cudom+
5116: $cusymb%$cuname+
5117: $cusymb%$cudom+
5118: $cucourseid%$cuname+
5119: $cucourseid%$cudom);
5120: }
5121: return $return;
1.76 www 5122: }
5123:
5124: sub receipt {
1.474 albertel 5125: my ($part)=@_;
5126: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
5127: return &ireceipt($name,$domain,$courseid,$symb,$part);
1.76 www 5128: }
1.260 ng 5129:
1.36 albertel 5130: # ------------------------------------------------------------ Serves up a file
1.472 albertel 5131: # returns either the contents of the file or
5132: # -1 if the file doesn't exist
1.481 raeburn 5133: #
5134: # if the target is a file that was uploaded via DOCS,
5135: # a check will be made to see if a current copy exists on the local server,
5136: # if it does this will be served, otherwise a copy will be retrieved from
5137: # the home server for the course and stored in /home/httpd/html/userfiles on
5138: # the local server.
1.472 albertel 5139:
1.36 albertel 5140: sub getfile {
1.538 albertel 5141: my ($file) = @_;
1.482 albertel 5142:
1.538 albertel 5143: if ($file =~ m|^/*uploaded/|) { $file=&filelocation("",$file); }
5144: &repcopy($file);
5145: return &readfile($file);
5146: }
5147:
5148: sub repcopy_userfile {
5149: my ($file)=@_;
5150:
5151: if ($file =~ m|^/*uploaded/|) { $file=&filelocation("",$file); }
5152: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return OK; }
5153:
5154: my ($cdom,$cnum,$filename) =
5155: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+([^/]+)/+([^/]+)/+(.*)|);
5156: my ($info,$rtncode);
5157: my $uri="/uploaded/$cdom/$cnum/$filename";
5158: if (-e "$file") {
5159: my @fileinfo = stat($file);
5160: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5161: if ($lwpresp ne 'ok') {
5162: if ($rtncode eq '404') {
1.538 albertel 5163: unlink($file);
1.482 albertel 5164: }
1.517 albertel 5165: #my $ua=new LWP::UserAgent;
1.538 albertel 5166: #my $request=new HTTP::Request('GET',&tokenwrapper($uri));
1.517 albertel 5167: #my $response=$ua->request($request);
5168: #if ($response->is_success()) {
5169: # return $response->content;
5170: # } else {
5171: # return -1;
5172: # }
1.482 albertel 5173: return -1;
5174: }
5175: if ($info < $fileinfo[9]) {
1.538 albertel 5176: return OK;
1.482 albertel 5177: }
5178: $info = '';
1.538 albertel 5179: $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5180: if ($lwpresp ne 'ok') {
5181: return -1;
5182: }
5183: } else {
1.538 albertel 5184: my $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5185: if ($lwpresp ne 'ok') {
1.517 albertel 5186: my $ua=new LWP::UserAgent;
1.538 albertel 5187: my $request=new HTTP::Request('GET',&tokenwrapper($uri));
1.517 albertel 5188: my $response=$ua->request($request);
5189: if ($response->is_success()) {
1.538 albertel 5190: $info=$response->content;
1.517 albertel 5191: } else {
5192: return -1;
5193: }
1.482 albertel 5194: }
5195: my @parts = ($cdom,$cnum);
5196: if ($filename =~ m|^(.+)/[^/]+$|) {
5197: push @parts, split(/\//,$1);
1.518 albertel 5198: }
1.538 albertel 5199: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
1.482 albertel 5200: foreach my $part (@parts) {
5201: $path .= '/'.$part;
5202: if (!-e $path) {
5203: mkdir($path,0770);
5204: }
5205: }
5206: }
1.538 albertel 5207: open(FILE,">$file");
1.482 albertel 5208: print FILE $info;
5209: close(FILE);
1.538 albertel 5210: return OK;
1.481 raeburn 5211: }
5212:
1.517 albertel 5213: sub tokenwrapper {
5214: my $uri=shift;
1.552 albertel 5215: $uri=~s|^http\://([^/]+)||;
5216: $uri=~s|^/||;
1.517 albertel 5217: $ENV{'user.environment'}=~/\/([^\/]+)\.id/;
5218: my $token=$1;
1.552 albertel 5219: my (undef,$udom,$uname,$file)=split('/',$uri,4);
5220: if ($udom && $uname && $file) {
5221: $file=~s|(\?\.*)*$||;
5222: &appenv("userfile.$udom/$uname/$file" => $ENV{'request.course.id'});
5223: return 'http://'.$hostname{ &homeserver($uname,$udom)}.'/'.$uri.
1.517 albertel 5224: (($uri=~/\?/)?'&':'?').'token='.$token.
5225: '&tokenissued='.$perlvar{'lonHostID'};
5226: } else {
5227: return '/adm/notfound.html';
5228: }
5229: }
5230:
1.481 raeburn 5231: sub getuploaded {
5232: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
5233: $uri=~s/^\///;
5234: $uri = 'http://'.$hostname{ &homeserver($cnum,$cdom)}.'/raw/'.$uri;
5235: my $ua=new LWP::UserAgent;
5236: my $request=new HTTP::Request($reqtype,$uri);
5237: my $response=$ua->request($request);
5238: $$rtncode = $response->code;
1.482 albertel 5239: if (! $response->is_success()) {
5240: return 'failed';
5241: }
5242: if ($reqtype eq 'HEAD') {
1.486 www 5243: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
1.482 albertel 5244: } elsif ($reqtype eq 'GET') {
5245: $$info = $response->content;
1.472 albertel 5246: }
1.482 albertel 5247: return 'ok';
1.36 albertel 5248: }
5249:
1.481 raeburn 5250: sub readfile {
5251: my $file = shift;
5252: if ( (! -e $file ) || ($file eq '') ) { return -1; };
5253: my $fh;
5254: open($fh,"<$file");
5255: my $a='';
5256: while (<$fh>) { $a .=$_; }
5257: return $a;
5258: }
5259:
1.36 albertel 5260: sub filelocation {
5261: my ($dir,$file) = @_;
5262: my $location;
5263: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1.59 albertel 5264: if ($file=~m:^/~:) { # is a contruction space reference
5265: $location = $file;
5266: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.270 www 5267: } elsif ($file=~/^\/*uploaded/) { # is an uploaded file
1.537 albertel 5268: my ($udom,$uname,$filename)=
5269: ($file=~m|^/+uploaded/+([^/]+)/+([^/]+)/+(.*)$|);
5270: my $home=&homeserver($uname,$udom);
5271: my $is_me=0;
1.536 sakharuk 5272: my @ids=¤t_machine_ids();
1.537 albertel 5273: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
5274: if ($is_me) {
5275: $location=&Apache::loncommon::propath($udom,$uname).
5276: '/userfiles/'.$filename;
1.527 sakharuk 5277: } else {
1.537 albertel 5278: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
5279: $udom.'/'.$uname.'/'.$filename;
1.527 sakharuk 5280: }
1.36 albertel 5281: } else {
1.479 albertel 5282: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
1.464 albertel 5283: $file=~s:^/res/:/:;
1.59 albertel 5284: if ( !( $file =~ m:^/:) ) {
5285: $location = $dir. '/'.$file;
5286: } else {
5287: $location = '/home/httpd/html/res'.$file;
5288: }
1.36 albertel 5289: }
5290: $location=~s://+:/:g; # remove duplicate /
1.46 www 5291: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
1.475 albertel 5292: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
1.46 www 5293: return $location;
5294: }
1.36 albertel 5295:
1.46 www 5296: sub hreflocation {
5297: my ($dir,$file)=@_;
1.460 albertel 5298: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
5299: my $finalpath=filelocation($dir,$file);
5300: $finalpath=~s-^/home/httpd/html--;
1.462 albertel 5301: $finalpath=~s-^/home/(\w+)/public_html/-/~$1/-;
1.460 albertel 5302: return $finalpath;
5303: } elsif ($file=~m-^/home-) {
5304: $file=~s-^/home/httpd/html--;
1.462 albertel 5305: $file=~s-^/home/(\w+)/public_html/-/~$1/-;
1.460 albertel 5306: return $file;
1.46 www 5307: }
1.462 albertel 5308: return $file;
1.465 albertel 5309: }
5310:
5311: sub current_machine_domains {
5312: my $hostname=$hostname{$perlvar{'lonHostID'}};
5313: my @domains;
5314: while( my($id, $name) = each(%hostname)) {
1.467 matthew 5315: # &logthis("-$id-$name-$hostname-");
1.465 albertel 5316: if ($hostname eq $name) {
5317: push(@domains,$hostdom{$id});
5318: }
5319: }
5320: return @domains;
5321: }
5322:
5323: sub current_machine_ids {
5324: my $hostname=$hostname{$perlvar{'lonHostID'}};
5325: my @ids;
5326: while( my($id, $name) = each(%hostname)) {
1.467 matthew 5327: # &logthis("-$id-$name-$hostname-");
1.465 albertel 5328: if ($hostname eq $name) {
5329: push(@ids,$id);
5330: }
5331: }
5332: return @ids;
1.31 www 5333: }
5334:
5335: # ------------------------------------------------------------- Declutters URLs
5336:
5337: sub declutter {
5338: my $thisfn=shift;
1.569 albertel 5339: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
1.479 albertel 5340: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
1.31 www 5341: $thisfn=~s/^\///;
5342: $thisfn=~s/^res\///;
1.235 www 5343: $thisfn=~s/\?.+$//;
1.268 www 5344: return $thisfn;
5345: }
5346:
5347: # ------------------------------------------------------------- Clutter up URLs
5348:
5349: sub clutter {
5350: my $thisfn='/'.&declutter(shift);
1.509 albertel 5351: unless ($thisfn=~/^\/(uploaded|adm|userfiles|ext|raw|priv|public)\//) {
1.270 www 5352: $thisfn='/res'.$thisfn;
5353: }
1.31 www 5354: return $thisfn;
1.12 www 5355: }
5356:
1.557 albertel 5357: sub freeze_escape {
5358: my ($value)=@_;
5359: if (ref($value)) {
5360: $value=&nfreeze($value);
5361: return '__FROZEN__'.&escape($value);
5362: }
5363: return &escape($value);
5364: }
5365:
1.12 www 5366: # -------------------------------------------------------- Escape Special Chars
5367:
5368: sub escape {
5369: my $str=shift;
5370: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
5371: return $str;
5372: }
5373:
5374: # ----------------------------------------------------- Un-Escape Special Chars
5375:
5376: sub unescape {
5377: my $str=shift;
5378: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
5379: return $str;
5380: }
1.11 www 5381:
1.557 albertel 5382: sub thaw_unescape {
5383: my ($value)=@_;
5384: if ($value =~ /^__FROZEN__/) {
5385: substr($value,0,10,undef);
5386: $value=&unescape($value);
5387: return &thaw($value);
5388: }
5389: return &unescape($value);
5390: }
5391:
1.415 albertel 5392: sub mod_perl_version {
5393: if (defined($perlvar{'MODPERL2'})) {
5394: return 2;
5395: }
5396: return 1;
1.436 albertel 5397: }
5398:
5399: sub correct_line_ends {
5400: my ($result)=@_;
5401: $$result =~s/\r\n/\n/mg;
5402: $$result =~s/\r/\n/mg;
1.415 albertel 5403: }
1.1 albertel 5404: # ================================================================ Main Program
5405:
1.184 www 5406: sub goodbye {
1.204 albertel 5407: &logthis("Starting Shut down");
1.443 albertel 5408: #not converted to using infrastruture and probably shouldn't be
1.425 albertel 5409: &logthis(sprintf("%-20s is %s",'%badServerCache',scalar(%badServerCache)));
1.443 albertel 5410: #converted
1.425 albertel 5411: &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
1.443 albertel 5412: &logthis(sprintf("%-20s is %s",'%homecache',scalar(%homecache)));
1.425 albertel 5413: &logthis(sprintf("%-20s is %s",'%titlecache',scalar(%titlecache)));
5414: &logthis(sprintf("%-20s is %s",'%courseresdatacache',scalar(%courseresdatacache)));
5415: #1.1 only
5416: &logthis(sprintf("%-20s is %s",'%userresdatacache',scalar(%userresdatacache)));
1.551 albertel 5417: &logthis(sprintf("%-20s is %s",'%getsectioncache',scalar(%getsectioncache)));
1.440 www 5418: &logthis(sprintf("%-20s is %s",'%courseresversioncache',scalar(%courseresversioncache)));
5419: &logthis(sprintf("%-20s is %s",'%resversioncache',scalar(%resversioncache)));
1.184 www 5420: &flushcourselogs();
5421: &logthis("Shutting down");
1.362 albertel 5422: return DONE;
1.184 www 5423: }
5424:
1.179 www 5425: BEGIN {
1.228 harris41 5426: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
1.195 www 5427: unless ($readit) {
1.217 harris41 5428: {
1.448 albertel 5429: open(my $config,"</etc/httpd/conf/loncapa.conf");
1.217 harris41 5430:
5431: while (my $configline=<$config>) {
1.484 albertel 5432: if ($configline=~/\S/ && $configline =~ /^[^\#]*PerlSetVar/) {
1.1 albertel 5433: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 5434: chomp($varvalue);
1.1 albertel 5435: $perlvar{$varname}=$varvalue;
5436: }
5437: }
1.448 albertel 5438: close($config);
1.1 albertel 5439: }
1.227 harris41 5440: {
1.448 albertel 5441: open(my $config,"</etc/httpd/conf/loncapa_apache.conf");
1.227 harris41 5442:
5443: while (my $configline=<$config>) {
5444: if ($configline =~ /^[^\#]*PerlSetVar/) {
5445: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
5446: chomp($varvalue);
5447: $perlvar{$varname}=$varvalue;
5448: }
5449: }
1.448 albertel 5450: close($config);
1.227 harris41 5451: }
1.1 albertel 5452:
1.327 albertel 5453: # ------------------------------------------------------------ Read domain file
5454: {
5455: %domaindescription = ();
5456: %domain_auth_def = ();
5457: %domain_auth_arg_def = ();
1.448 albertel 5458: my $fh;
5459: if (open($fh,"<".$Apache::lonnet::perlvar{'lonTabDir'}.'/domain.tab')) {
1.327 albertel 5460: while (<$fh>) {
1.390 matthew 5461: next if (/^(\#|\s*$)/);
5462: # next if /^\#/;
1.327 albertel 5463: chomp;
1.403 www 5464: my ($domain, $domain_description, $def_auth, $def_auth_arg,
5465: $def_lang, $city, $longi, $lati) = split(/:/,$_);
5466: $domain_auth_def{$domain}=$def_auth;
1.327 albertel 5467: $domain_auth_arg_def{$domain}=$def_auth_arg;
1.403 www 5468: $domaindescription{$domain}=$domain_description;
5469: $domain_lang_def{$domain}=$def_lang;
5470: $domain_city{$domain}=$city;
5471: $domain_longi{$domain}=$longi;
5472: $domain_lati{$domain}=$lati;
5473:
1.448 albertel 5474: # &logthis("Domain.tab: $domain, $domain_auth_def{$domain}, $domain_auth_arg_def{$domain},$domaindescription{$domain}");
1.327 albertel 5475: # &logthis("Domain.tab: $domain ".$domaindescription{$domain} );
1.448 albertel 5476: }
1.327 albertel 5477: }
1.448 albertel 5478: close ($fh);
1.327 albertel 5479: }
5480:
5481:
1.1 albertel 5482: # ------------------------------------------------------------- Read hosts file
5483: {
1.448 albertel 5484: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
1.1 albertel 5485:
5486: while (my $configline=<$config>) {
1.303 matthew 5487: next if ($configline =~ /^(\#|\s*$)/);
1.154 www 5488: chomp($configline);
1.245 www 5489: my ($id,$domain,$role,$name,$ip,$domdescr)=split(/:/,$configline);
1.252 albertel 5490: if ($id && $domain && $role && $name && $ip) {
5491: $hostname{$id}=$name;
5492: $hostdom{$id}=$domain;
5493: $hostip{$id}=$ip;
1.300 albertel 5494: $iphost{$ip}=$id;
1.252 albertel 5495: if ($role eq 'library') { $libserv{$id}=$name; }
1.245 www 5496: }
1.1 albertel 5497: }
1.448 albertel 5498: close($config);
1.1 albertel 5499: }
5500:
5501: # ------------------------------------------------------ Read spare server file
5502: {
1.448 albertel 5503: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
1.1 albertel 5504:
5505: while (my $configline=<$config>) {
5506: chomp($configline);
1.284 matthew 5507: if ($configline) {
1.1 albertel 5508: $spareid{$configline}=1;
5509: }
5510: }
1.448 albertel 5511: close($config);
1.1 albertel 5512: }
1.11 www 5513: # ------------------------------------------------------------ Read permissions
5514: {
1.448 albertel 5515: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
1.11 www 5516:
5517: while (my $configline=<$config>) {
1.448 albertel 5518: chomp($configline);
5519: if ($configline) {
5520: my ($role,$perm)=split(/ /,$configline);
5521: if ($perm ne '') { $pr{$role}=$perm; }
5522: }
1.11 www 5523: }
1.448 albertel 5524: close($config);
1.11 www 5525: }
5526:
5527: # -------------------------------------------- Read plain texts for permissions
5528: {
1.448 albertel 5529: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
1.11 www 5530:
5531: while (my $configline=<$config>) {
1.448 albertel 5532: chomp($configline);
5533: if ($configline) {
5534: my ($short,$plain)=split(/:/,$configline);
5535: if ($plain ne '') { $prp{$short}=$plain; }
5536: }
1.135 www 5537: }
1.448 albertel 5538: close($config);
1.135 www 5539: }
5540:
5541: # ---------------------------------------------------------- Read package table
5542: {
1.448 albertel 5543: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
1.135 www 5544:
5545: while (my $configline=<$config>) {
1.483 albertel 5546: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
1.448 albertel 5547: chomp($configline);
5548: my ($short,$plain)=split(/:/,$configline);
5549: my ($pack,$name)=split(/\&/,$short);
5550: if ($plain ne '') {
5551: $packagetab{$pack.'&'.$name.'&name'}=$name;
5552: $packagetab{$short}=$plain;
5553: }
1.11 www 5554: }
1.448 albertel 5555: close($config);
1.329 matthew 5556: }
5557:
5558: # ------------- set up temporary directory
5559: {
5560: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
5561:
1.11 www 5562: }
5563:
1.71 www 5564: %metacache=();
1.185 www 5565:
1.281 www 5566: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
1.186 www 5567: $dumpcount=0;
1.22 www 5568:
1.163 harris41 5569: &logtouch();
1.12 www 5570: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.195 www 5571: $readit=1;
1.564 albertel 5572: {
5573: use integer;
5574: my $test=(2**32)+1;
1.568 albertel 5575: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
1.564 albertel 5576: &logthis(" Detected 64bit platform ($_64bit)");
5577: }
1.195 www 5578: }
1.1 albertel 5579: }
1.179 www 5580:
1.1 albertel 5581: 1;
1.191 harris41 5582: __END__
5583:
1.243 albertel 5584: =pod
5585:
1.191 harris41 5586: =head1 NAME
5587:
1.243 albertel 5588: Apache::lonnet - Subroutines to ask questions about things in the network.
1.191 harris41 5589:
5590: =head1 SYNOPSIS
5591:
1.243 albertel 5592: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
1.191 harris41 5593:
5594: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
5595:
1.243 albertel 5596: Common parameters:
5597:
5598: =over 4
5599:
5600: =item *
5601:
5602: $uname : an internal username (if $cname expecting a course Id specifically)
5603:
5604: =item *
5605:
5606: $udom : a domain (if $cdom expecting a course's domain specifically)
5607:
5608: =item *
5609:
5610: $symb : a resource instance identifier
5611:
5612: =item *
5613:
5614: $namespace : the name of a .db file that contains the data needed or
5615: being set.
5616:
5617: =back
5618:
1.394 bowersj2 5619: =head1 OVERVIEW
1.191 harris41 5620:
1.394 bowersj2 5621: lonnet provides subroutines which interact with the
5622: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
5623: about classes, users, and resources.
1.243 albertel 5624:
5625: For many of these objects you can also use this to store data about
5626: them or modify them in various ways.
1.191 harris41 5627:
1.394 bowersj2 5628: =head2 Symbs
1.191 harris41 5629:
1.394 bowersj2 5630: To identify a specific instance of a resource, LON-CAPA uses symbols
5631: or "symbs"X<symb>. These identifiers are built from the URL of the
5632: map, the resource number of the resource in the map, and the URL of
5633: the resource itself. The latter is somewhat redundant, but might help
5634: if maps change.
5635:
5636: An example is
5637:
5638: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
5639:
5640: The respective map entry is
5641:
5642: <resource id="19" src="/res/msu/korte/tests/part12.problem"
5643: title="Problem 2">
5644: </resource>
5645:
5646: Symbs are used by the random number generator, as well as to store and
5647: restore data specific to a certain instance of for example a problem.
5648:
5649: =head2 Storing And Retrieving Data
5650:
5651: X<store()>X<cstore()>X<restore()>Three of the most important functions
5652: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
5653: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
5654: is is the non-critical message twin of cstore. These functions are for
5655: handlers to store a perl hash to a user's permanent data space in an
5656: easy manner, and to retrieve it again on another call. It is expected
5657: that a handler would use this once at the beginning to retrieve data,
5658: and then again once at the end to send only the new data back.
5659:
5660: The data is stored in the user's data directory on the user's
5661: homeserver under the ID of the course.
5662:
5663: The hash that is returned by restore will have all of the previous
5664: value for all of the elements of the hash.
5665:
5666: Example:
5667:
5668: #creating a hash
5669: my %hash;
5670: $hash{'foo'}='bar';
5671:
5672: #storing it
5673: &Apache::lonnet::cstore(\%hash);
5674:
5675: #changing a value
5676: $hash{'foo'}='notbar';
5677:
5678: #adding a new value
5679: $hash{'bar'}='foo';
5680: &Apache::lonnet::cstore(\%hash);
5681:
5682: #retrieving the hash
5683: my %history=&Apache::lonnet::restore();
5684:
5685: #print the hash
5686: foreach my $key (sort(keys(%history))) {
5687: print("\%history{$key} = $history{$key}");
5688: }
5689:
5690: Will print out:
1.191 harris41 5691:
1.394 bowersj2 5692: %history{1:foo} = bar
5693: %history{1:keys} = foo:timestamp
5694: %history{1:timestamp} = 990455579
5695: %history{2:bar} = foo
5696: %history{2:foo} = notbar
5697: %history{2:keys} = foo:bar:timestamp
5698: %history{2:timestamp} = 990455580
5699: %history{bar} = foo
5700: %history{foo} = notbar
5701: %history{timestamp} = 990455580
5702: %history{version} = 2
5703:
5704: Note that the special hash entries C<keys>, C<version> and
5705: C<timestamp> were added to the hash. C<version> will be equal to the
5706: total number of versions of the data that have been stored. The
5707: C<timestamp> attribute will be the UNIX time the hash was
5708: stored. C<keys> is available in every historical section to list which
5709: keys were added or changed at a specific historical revision of a
5710: hash.
5711:
5712: B<Warning>: do not store the hash that restore returns directly. This
5713: will cause a mess since it will restore the historical keys as if the
5714: were new keys. I.E. 1:foo will become 1:1:foo etc.
1.191 harris41 5715:
1.394 bowersj2 5716: Calling convention:
1.191 harris41 5717:
1.394 bowersj2 5718: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
5719: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
1.191 harris41 5720:
1.394 bowersj2 5721: For more detailed information, see lonnet specific documentation.
1.191 harris41 5722:
1.394 bowersj2 5723: =head1 RETURN MESSAGES
1.191 harris41 5724:
1.394 bowersj2 5725: =over 4
1.191 harris41 5726:
1.394 bowersj2 5727: =item * B<con_lost>: unable to contact remote host
1.191 harris41 5728:
1.394 bowersj2 5729: =item * B<con_delayed>: unable to contact remote host, message will be delivered
5730: when the connection is brought back up
1.191 harris41 5731:
1.394 bowersj2 5732: =item * B<con_failed>: unable to contact remote host and unable to save message
5733: for later delivery
1.191 harris41 5734:
1.394 bowersj2 5735: =item * B<error:>: an error a occured, a description of the error follows the :
1.191 harris41 5736:
1.394 bowersj2 5737: =item * B<no_such_host>: unable to fund a host associated with the user/domain
1.243 albertel 5738: that was requested
1.191 harris41 5739:
1.243 albertel 5740: =back
1.191 harris41 5741:
1.243 albertel 5742: =head1 PUBLIC SUBROUTINES
1.191 harris41 5743:
1.243 albertel 5744: =head2 Session Environment Functions
1.191 harris41 5745:
1.243 albertel 5746: =over 4
1.191 harris41 5747:
1.394 bowersj2 5748: =item *
5749: X<appenv()>
5750: B<appenv(%hash)>: the value of %hash is written to
5751: the user envirnoment file, and will be restored for each access this
5752: user makes during this session, also modifies the %ENV for the current
5753: process
1.191 harris41 5754:
5755: =item *
1.394 bowersj2 5756: X<delenv()>
5757: B<delenv($regexp)>: removes all items from the session
5758: environment file that matches the regular expression in $regexp. The
5759: values are also delted from the current processes %ENV.
1.191 harris41 5760:
1.243 albertel 5761: =back
5762:
5763: =head2 User Information
1.191 harris41 5764:
1.243 albertel 5765: =over 4
1.191 harris41 5766:
5767: =item *
1.394 bowersj2 5768: X<queryauthenticate()>
5769: B<queryauthenticate($uname,$udom)>: try to determine user's current
1.191 harris41 5770: authentication scheme
5771:
5772: =item *
1.394 bowersj2 5773: X<authenticate()>
5774: B<authenticate($uname,$upass,$udom)>: try to
5775: authenticate user from domain's lib servers (first use the current
5776: one). C<$upass> should be the users password.
1.191 harris41 5777:
5778: =item *
1.394 bowersj2 5779: X<homeserver()>
5780: B<homeserver($uname,$udom)>: find the server which has
5781: the user's directory and files (there must be only one), this caches
5782: the answer, and also caches if there is a borken connection.
1.191 harris41 5783:
5784: =item *
1.394 bowersj2 5785: X<idget()>
5786: B<idget($udom,@ids)>: find the usernames behind a list of IDs
5787: (IDs are a unique resource in a domain, there must be only 1 ID per
5788: username, and only 1 username per ID in a specific domain) (returns
5789: hash: id=>name,id=>name)
1.191 harris41 5790:
5791: =item *
1.394 bowersj2 5792: X<idrget()>
5793: B<idrget($udom,@unames)>: find the IDs behind a list of
5794: usernames (returns hash: name=>id,name=>id)
1.191 harris41 5795:
5796: =item *
1.394 bowersj2 5797: X<idput()>
5798: B<idput($udom,%ids)>: store away a list of names and associated IDs
1.191 harris41 5799:
5800: =item *
1.394 bowersj2 5801: X<rolesinit()>
5802: B<rolesinit($udom,$username,$authhost)>: get user privileges
1.243 albertel 5803:
5804: =item *
1.551 albertel 5805: X<getsection()>
5806: B<getsection($udom,$uname,$cname)>: finds the section of student in the
1.243 albertel 5807: course $cname, return section name/number or '' for "not in course"
5808: and '-1' for "no section"
5809:
5810: =item *
1.394 bowersj2 5811: X<userenvironment()>
5812: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
1.243 albertel 5813: passed in @what from the requested user's environment, returns a hash
5814:
5815: =back
5816:
5817: =head2 User Roles
5818:
5819: =over 4
5820:
5821: =item *
5822:
5823: allowed($priv,$uri) : check for a user privilege; returns codes for allowed
5824: actions
5825: F: full access
5826: U,I,K: authentication modes (cxx only)
5827: '': forbidden
5828: 1: user needs to choose course
5829: 2: browse allowed
5830:
5831: =item *
5832:
5833: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
5834: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
5835: and course level
5836:
5837: =item *
5838:
5839: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
5840: explanation of a user role term
5841:
5842: =back
5843:
5844: =head2 User Modification
5845:
5846: =over 4
5847:
5848: =item *
5849:
5850: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
5851: user for the level given by URL. Optional start and end dates (leave empty
5852: string or zero for "no date")
1.191 harris41 5853:
5854: =item *
5855:
1.243 albertel 5856: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
5857: change a users, password, possible return values are: ok,
5858: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
5859: refused
1.191 harris41 5860:
5861: =item *
5862:
1.243 albertel 5863: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
1.191 harris41 5864:
5865: =item *
5866:
1.243 albertel 5867: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
5868: modify user
1.191 harris41 5869:
5870: =item *
5871:
1.286 matthew 5872: modifystudent
5873:
5874: modify a students enrollment and identification information.
5875: The course id is resolved based on the current users environment.
5876: This means the envoking user must be a course coordinator or otherwise
5877: associated with a course.
5878:
1.297 matthew 5879: This call is essentially a wrapper for lonnet::modifyuser and
5880: lonnet::modify_student_enrollment
1.286 matthew 5881:
5882: Inputs:
5883:
5884: =over 4
5885:
5886: =item B<$udom> Students loncapa domain
5887:
5888: =item B<$uname> Students loncapa login name
5889:
5890: =item B<$uid> Students id/student number
5891:
5892: =item B<$umode> Students authentication mode
5893:
5894: =item B<$upass> Students password
5895:
5896: =item B<$first> Students first name
5897:
5898: =item B<$middle> Students middle name
5899:
5900: =item B<$last> Students last name
5901:
5902: =item B<$gene> Students generation
5903:
5904: =item B<$usec> Students section in course
5905:
5906: =item B<$end> Unix time of the roles expiration
5907:
5908: =item B<$start> Unix time of the roles start date
5909:
5910: =item B<$forceid> If defined, allow $uid to be changed
5911:
5912: =item B<$desiredhome> server to use as home server for student
5913:
5914: =back
1.297 matthew 5915:
5916: =item *
5917:
5918: modify_student_enrollment
5919:
5920: Change a students enrollment status in a class. The environment variable
5921: 'role.request.course' must be defined for this function to proceed.
5922:
5923: Inputs:
5924:
5925: =over 4
5926:
5927: =item $udom, students domain
5928:
5929: =item $uname, students name
5930:
5931: =item $uid, students user id
5932:
5933: =item $first, students first name
5934:
5935: =item $middle
5936:
5937: =item $last
5938:
5939: =item $gene
5940:
5941: =item $usec
5942:
5943: =item $end
5944:
5945: =item $start
5946:
5947: =back
5948:
1.191 harris41 5949:
5950: =item *
5951:
1.243 albertel 5952: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
5953: custom role; give a custom role to a user for the level given by URL. Specify
5954: name and domain of role author, and role name
1.191 harris41 5955:
5956: =item *
5957:
1.243 albertel 5958: revokerole($udom,$uname,$url,$role) : revoke a role for url
1.191 harris41 5959:
5960: =item *
5961:
1.243 albertel 5962: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
5963:
5964: =back
5965:
5966: =head2 Course Infomation
5967:
5968: =over 4
1.191 harris41 5969:
5970: =item *
5971:
1.243 albertel 5972: coursedescription($courseid) : course description
1.191 harris41 5973:
5974: =item *
5975:
1.243 albertel 5976: courseresdata($coursenum,$coursedomain,@which) : request for current
5977: parameter setting for a specific course, @what should be a list of
5978: parameters to ask about. This routine caches answers for 5 minutes.
5979:
5980: =back
5981:
5982: =head2 Course Modification
5983:
5984: =over 4
1.191 harris41 5985:
5986: =item *
5987:
1.243 albertel 5988: writecoursepref($courseid,%prefs) : write preferences (environment
5989: database) for a course
1.191 harris41 5990:
5991: =item *
5992:
1.243 albertel 5993: createcourse($udom,$description,$url) : make/modify course
5994:
5995: =back
5996:
5997: =head2 Resource Subroutines
5998:
5999: =over 4
1.191 harris41 6000:
6001: =item *
6002:
1.243 albertel 6003: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
1.191 harris41 6004:
6005: =item *
6006:
1.243 albertel 6007: repcopy($filename) : subscribes to the requested file, and attempts to
6008: replicate from the owning library server, Might return
6009: HTTP_SERVICE_UNAVAILABLE, HTTP_NOT_FOUND, FORBIDDEN, OK, or
6010: HTTP_BAD_REQUEST, also attempts to grab the metadata for the
6011: resource. Expects the local filesystem pathname
6012: (/home/httpd/html/res/....)
6013:
6014: =back
6015:
6016: =head2 Resource Information
6017:
6018: =over 4
1.191 harris41 6019:
6020: =item *
6021:
1.243 albertel 6022: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
6023: a vairety of different possible values, $varname should be a request
6024: string, and the other parameters can be used to specify who and what
6025: one is asking about.
6026:
6027: Possible values for $varname are environment.lastname (or other item
6028: from the envirnment hash), user.name (or someother aspect about the
6029: user), resource.0.maxtries (or some other part and parameter of a
6030: resource)
1.204 albertel 6031:
6032: =item *
6033:
1.243 albertel 6034: directcondval($number) : get current value of a condition; reads from a state
6035: string
1.204 albertel 6036:
6037: =item *
6038:
1.243 albertel 6039: condval($condidx) : value of condition index based on state
1.204 albertel 6040:
6041: =item *
6042:
1.243 albertel 6043: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
6044: resource's metadata, $what should be either a specific key, or either
6045: 'keys' (to get a list of possible keys) or 'packages' to get a list of
6046: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
6047:
6048: this function automatically caches all requests
1.191 harris41 6049:
6050: =item *
6051:
1.243 albertel 6052: metadata_query($query,$custom,$customshow) : make a metadata query against the
6053: network of library servers; returns file handle of where SQL and regex results
6054: will be stored for query
1.191 harris41 6055:
6056: =item *
6057:
1.243 albertel 6058: symbread($filename) : return symbolic list entry (filename argument optional);
6059: returns the data handle
1.191 harris41 6060:
6061: =item *
6062:
1.243 albertel 6063: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
6064: a possible symb for the URL in $thisfn, returns a 1 on success, 0 on
6065: failure, user must be in a course, as it assumes the existance of the
6066: course initi hash, and uses $ENV('request.course.id'}
6067:
1.191 harris41 6068:
6069: =item *
6070:
1.243 albertel 6071: symbclean($symb) : removes versions numbers from a symb, returns the
6072: cleaned symb
1.191 harris41 6073:
6074: =item *
6075:
1.243 albertel 6076: is_on_map($uri) : checks if the $uri is somewhere on the current
6077: course map, user must be in a course for it to work.
1.191 harris41 6078:
6079: =item *
6080:
1.243 albertel 6081: numval($salt) : return random seed value (addend for rndseed)
1.191 harris41 6082:
6083: =item *
6084:
1.243 albertel 6085: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
6086: a random seed, all arguments are optional, if they aren't sent it uses the
6087: environment to derive them. Note: if symb isn't sent and it can't get one
6088: from &symbread it will use the current time as its return value
1.191 harris41 6089:
6090: =item *
6091:
1.243 albertel 6092: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
6093: unfakeable, receipt
1.191 harris41 6094:
6095: =item *
6096:
1.243 albertel 6097: receipt() : API to ireceipt working off of ENV values; given out to users
1.191 harris41 6098:
6099: =item *
6100:
1.243 albertel 6101: countacc($url) : count the number of accesses to a given URL
1.191 harris41 6102:
6103: =item *
6104:
1.243 albertel 6105: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
1.191 harris41 6106:
6107: =item *
6108:
1.243 albertel 6109: checkin($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 $tcrsid)
1.191 harris41 6110:
6111: =item *
6112:
1.243 albertel 6113: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
1.191 harris41 6114:
6115: =item *
6116:
1.243 albertel 6117: devalidate($symb) : devalidate temporary spreadsheet calculations,
6118: forcing spreadsheet to reevaluate the resource scores next time.
6119:
6120: =back
6121:
6122: =head2 Storing/Retreiving Data
6123:
6124: =over 4
1.191 harris41 6125:
6126: =item *
6127:
1.243 albertel 6128: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
6129: for this url; hashref needs to be given and should be a \%hashname; the
6130: remaining args aren't required and if they aren't passed or are '' they will
6131: be derived from the ENV
1.191 harris41 6132:
6133: =item *
6134:
1.243 albertel 6135: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
6136: uses critical subroutine
1.191 harris41 6137:
6138: =item *
6139:
1.243 albertel 6140: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
6141: all args are optional
1.191 harris41 6142:
6143: =item *
6144:
1.243 albertel 6145: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
6146: works very similar to store/cstore, but all data is stored in a
6147: temporary location and can be reset using tmpreset, $storehash should
6148: be a hash reference, returns nothing on success
1.191 harris41 6149:
6150: =item *
6151:
1.243 albertel 6152: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
6153: similar to restore, but all data is stored in a temporary location and
6154: can be reset using tmpreset. Returns a hash of values on success,
6155: error string otherwise.
1.191 harris41 6156:
6157: =item *
6158:
1.243 albertel 6159: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
6160: deltes all keys for $symb form the temporary storage hash.
1.191 harris41 6161:
6162: =item *
6163:
1.243 albertel 6164: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
6165: reference filled in from namesp ($udom and $uname are optional)
1.191 harris41 6166:
6167: =item *
6168:
1.243 albertel 6169: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
6170: namesp ($udom and $uname are optional)
1.191 harris41 6171:
6172: =item *
6173:
1.243 albertel 6174: dump($namespace,$udom,$uname,$regexp) :
6175: dumps the complete (or key matching regexp) namespace into a hash
6176: ($udom, $uname and $regexp are optional)
1.449 matthew 6177:
6178: =item *
6179:
6180: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
6181: $store can be a scalar, an array reference, or if the amount to be
6182: incremented is > 1, a hash reference.
6183:
6184: ($udom and $uname are optional)
1.191 harris41 6185:
6186: =item *
6187:
1.243 albertel 6188: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
6189: ($udom and $uname are optional)
1.191 harris41 6190:
6191: =item *
6192:
1.524 raeburn 6193: putstore($namespace,$storehash,$udomain,$uname) : stores hash in namesp
6194: keys used in storehash include version information (e.g., 1:$symb:message etc.) as
6195: used in records written by &store and retrieved by &restore. This function
6196: was created for use in editing discussion posts, without incrementing the
6197: version number included in the key for a particular post. The colon
6198: separated list of attribute names (e.g., the value associated with the key
6199: 1:keys:$symb) is also generated and passed in the ampersand separated
6200: items sent to lonnet::reply().
6201:
6202: =item *
6203:
1.243 albertel 6204: cput($namespace,$storehash,$udom,$uname) : critical put
6205: ($udom and $uname are optional)
1.191 harris41 6206:
6207: =item *
6208:
1.243 albertel 6209: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
6210: reference filled in from namesp (encrypts the return communication)
6211: ($udom and $uname are optional)
1.191 harris41 6212:
6213: =item *
6214:
1.243 albertel 6215: log($udom,$name,$home,$message) : write to permanent log for user; use
6216: critical subroutine
6217:
6218: =back
6219:
6220: =head2 Network Status Functions
6221:
6222: =over 4
1.191 harris41 6223:
6224: =item *
6225:
6226: dirlist($uri) : return directory list based on URI
6227:
6228: =item *
6229:
1.243 albertel 6230: spareserver() : find server with least workload from spare.tab
6231:
6232: =back
6233:
6234: =head2 Apache Request
6235:
6236: =over 4
1.191 harris41 6237:
6238: =item *
6239:
1.243 albertel 6240: ssi($url,%hash) : server side include, does a complete request cycle on url to
6241: localhost, posts hash
6242:
6243: =back
6244:
6245: =head2 Data to String to Data
6246:
6247: =over 4
1.191 harris41 6248:
6249: =item *
6250:
1.243 albertel 6251: hash2str(%hash) : convert a hash into a string complete with escaping and '='
6252: and '&' separators, supports elements that are arrayrefs and hashrefs
1.191 harris41 6253:
6254: =item *
6255:
1.243 albertel 6256: hashref2str($hashref) : convert a hashref into a string complete with
6257: escaping and '=' and '&' separators, supports elements that are
6258: arrayrefs and hashrefs
1.191 harris41 6259:
6260: =item *
6261:
1.243 albertel 6262: arrayref2str($arrayref) : convert an arrayref into a string complete
6263: with escaping and '&' separators, supports elements that are arrayrefs
6264: and hashrefs
1.191 harris41 6265:
6266: =item *
6267:
1.243 albertel 6268: str2hash($string) : convert string to hash using unescaping and
6269: splitting on '=' and '&', supports elements that are arrayrefs and
6270: hashrefs
1.191 harris41 6271:
6272: =item *
6273:
1.243 albertel 6274: str2array($string) : convert string to hash using unescaping and
6275: splitting on '&', supports elements that are arrayrefs and hashrefs
6276:
6277: =back
6278:
6279: =head2 Logging Routines
6280:
6281: =over 4
6282:
6283: These routines allow one to make log messages in the lonnet.log and
6284: lonnet.perm logfiles.
1.191 harris41 6285:
6286: =item *
6287:
1.243 albertel 6288: logtouch() : make sure the logfile, lonnet.log, exists
1.191 harris41 6289:
6290: =item *
6291:
1.243 albertel 6292: logthis() : append message to the normal lonnet.log file, it gets
6293: preiodically rolled over and deleted.
1.191 harris41 6294:
6295: =item *
6296:
1.243 albertel 6297: logperm() : append a permanent message to lonnet.perm.log, this log
6298: file never gets deleted by any automated portion of the system, only
6299: messages of critical importance should go in here.
6300:
6301: =back
6302:
6303: =head2 General File Helper Routines
6304:
6305: =over 4
1.191 harris41 6306:
6307: =item *
6308:
1.481 raeburn 6309: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
6310: (a) files in /uploaded
6311: (i) If a local copy of the file exists -
6312: compares modification date of local copy with last-modified date for
6313: definitive version stored on home server for course. If local copy is
6314: stale, requests a new version from the home server and stores it.
6315: If the original has been removed from the home server, then local copy
6316: is unlinked.
6317: (ii) If local copy does not exist -
6318: requests the file from the home server and stores it.
6319:
6320: If $caller is 'uploadrep':
6321: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
6322: for request for files originally uploaded via DOCS.
6323: - returns 'ok' if fresh local copy now available, -1 otherwise.
6324:
6325: Otherwise:
6326: This indicates a call from the content generation phase of the request.
6327: - returns the entire contents of the file or -1.
6328:
6329: (b) files in /res
6330: - returns the entire contents of a file or -1;
6331: it properly subscribes to and replicates the file if neccessary.
1.191 harris41 6332:
6333: =item *
6334:
1.243 albertel 6335: filelocation($dir,$file) : returns file system location of a file
6336: based on URI; meant to be "fairly clean" absolute reference, $dir is a
6337: directory that relative $file lookups are to looked in ($dir of /a/dir
6338: and a file of ../bob will become /a/bob)
1.191 harris41 6339:
6340: =item *
6341:
6342: hreflocation($dir,$file) : returns file system location or a URL; same as
6343: filelocation except for hrefs
6344:
6345: =item *
6346:
6347: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
6348:
1.243 albertel 6349: =back
6350:
6351: =head2 HTTP Helper Routines
6352:
6353: =over 4
6354:
1.191 harris41 6355: =item *
6356:
6357: escape() : unpack non-word characters into CGI-compatible hex codes
6358:
6359: =item *
6360:
6361: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
6362:
1.243 albertel 6363: =back
6364:
6365: =head1 PRIVATE SUBROUTINES
6366:
6367: =head2 Underlying communication routines (Shouldn't call)
6368:
6369: =over 4
6370:
6371: =item *
6372:
6373: subreply() : tries to pass a message to lonc, returns con_lost if incapable
6374:
6375: =item *
6376:
6377: reply() : uses subreply to send a message to remote machine, logs all failures
6378:
6379: =item *
6380:
6381: critical() : passes a critical message to another server; if cannot
6382: get through then place message in connection buffer directory and
6383: returns con_delayed, if incapable of saving message, returns
6384: con_failed
6385:
6386: =item *
6387:
6388: reconlonc() : tries to reconnect lonc client processes.
6389:
6390: =back
6391:
6392: =head2 Resource Access Logging
6393:
6394: =over 4
6395:
6396: =item *
6397:
6398: flushcourselogs() : flush (save) buffer logs and access logs
6399:
6400: =item *
6401:
6402: courselog($what) : save message for course in hash
6403:
6404: =item *
6405:
6406: courseacclog($what) : save message for course using &courselog(). Perform
6407: special processing for specific resource types (problems, exams, quizzes, etc).
6408:
1.191 harris41 6409: =item *
6410:
6411: goodbye() : flush course logs and log shutting down; it is called in srm.conf
6412: as a PerlChildExitHandler
1.243 albertel 6413:
6414: =back
6415:
6416: =head2 Other
6417:
6418: =over 4
6419:
6420: =item *
6421:
6422: symblist($mapname,%newhash) : update symbolic storage links
1.191 harris41 6423:
6424: =back
6425:
6426: =cut
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