Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.523.2.8
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
1.523.2.8! albertel 4: # $Id: lonnet.pm,v 1.523.2.7 2004/09/24 15:51:11 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
1.516 raeburn 41: %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseresdatacache
1.420 albertel 42: %userresdatacache %usectioncache %domaindescription %domain_auth_def %domain_auth_arg_def
1.403 www 43: %domain_lang_def %domain_city %domain_longi %domain_lati $tmpdir);
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);
1.294 matthew 50: use Apache::loncoursedata;
1.414 www 51: use Apache::lonlocal;
1.428 albertel 52: use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw);
1.523.2.2 albertel 53: use Time::HiRes qw( gettimeofday tv_interval );
1.195 www 54: my $readit;
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";
119: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
120: Type => SOCK_STREAM,
121: Timeout => 10)
122: or return "con_lost";
123: print $client "$cmd\n";
124: my $answer=<$client>;
1.9 www 125: if (!$answer) { $answer="con_lost"; }
1.1 albertel 126: chomp($answer);
127: return $answer;
128: }
129:
130: sub reply {
131: my ($cmd,$server)=@_;
1.205 www 132: unless (defined($hostname{$server})) { return 'no_such_host'; }
1.1 albertel 133: my $answer=subreply($cmd,$server);
1.203 www 134: if ($answer eq 'con_lost') {
1.311 matthew 135: #sleep 5;
136: #$answer=subreply($cmd,$server);
137: #if ($answer eq 'con_lost') {
1.233 albertel 138: # &logthis("Second attempt con_lost on $server");
139: # my $peerfile="$perlvar{'lonSockDir'}/$server";
140: # my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
141: # Type => SOCK_STREAM,
142: # Timeout => 10)
143: # or return "con_lost";
144: # &logthis("Killing socket");
145: # print $client "close_connection_exit\n";
146: #sleep 5;
147: # $answer=subreply($cmd,$server);
148: #}
1.203 www 149: }
1.65 www 150: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.12 www 151: &logthis("<font color=blue>WARNING:".
152: " $cmd to $server returned $answer</font>");
153: }
1.1 albertel 154: return $answer;
155: }
156:
157: # ----------------------------------------------------------- Send USR1 to lonc
158:
159: sub reconlonc {
160: my $peerfile=shift;
161: &logthis("Trying to reconnect for $peerfile");
162: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
1.448 albertel 163: if (open(my $fh,"<$loncfile")) {
1.1 albertel 164: my $loncpid=<$fh>;
165: chomp($loncpid);
166: if (kill 0 => $loncpid) {
167: &logthis("lonc at pid $loncpid responding, sending USR1");
168: kill USR1 => $loncpid;
169: sleep 1;
170: if (-e "$peerfile") { return; }
171: &logthis("$peerfile still not there, give it another try");
172: sleep 5;
173: if (-e "$peerfile") { return; }
1.12 www 174: &logthis(
175: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 176: } else {
1.12 www 177: &logthis(
178: "<font color=blue>WARNING:".
179: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 180: }
181: } else {
1.12 www 182: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 183: }
184: }
185:
186: # ------------------------------------------------------ Critical communication
1.12 www 187:
1.1 albertel 188: sub critical {
189: my ($cmd,$server)=@_;
1.89 www 190: unless ($hostname{$server}) {
191: &logthis("<font color=blue>WARNING:".
192: " Critical message to unknown server ($server)</font>");
193: return 'no_such_host';
194: }
1.1 albertel 195: my $answer=reply($cmd,$server);
196: if ($answer eq 'con_lost') {
197: my $pingreply=reply('ping',$server);
198: &reconlonc("$perlvar{'lonSockDir'}/$server");
199: my $pongreply=reply('pong',$server);
200: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
201: $answer=reply($cmd,$server);
202: if ($answer eq 'con_lost') {
203: my $now=time;
204: my $middlename=$cmd;
1.5 www 205: $middlename=substr($middlename,0,16);
1.1 albertel 206: $middlename=~s/\W//g;
207: my $dfilename=
1.305 www 208: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
209: $dumpcount++;
1.1 albertel 210: {
1.448 albertel 211: my $dfh;
212: if (open($dfh,">$dfilename")) {
213: print $dfh "$cmd\n";
214: close($dfh);
215: }
1.1 albertel 216: }
217: sleep 2;
218: my $wcmd='';
219: {
1.448 albertel 220: my $dfh;
221: if (open($dfh,"<$dfilename")) {
222: $wcmd=<$dfh>;
223: close($dfh);
224: }
1.1 albertel 225: }
226: chomp($wcmd);
1.7 www 227: if ($wcmd eq $cmd) {
1.12 www 228: &logthis("<font color=blue>WARNING: ".
229: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 230: &logperm("D:$server:$cmd");
231: return 'con_delayed';
232: } else {
1.12 www 233: &logthis("<font color=red>CRITICAL:"
234: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 235: &logperm("F:$server:$cmd");
236: return 'con_failed';
237: }
238: }
239: }
240: return $answer;
1.405 albertel 241: }
242:
1.412 www 243: #
1.405 albertel 244: # -------------- Remove all key from the env that start witha lowercase letter
1.412 www 245: # (Which is always a lon-capa value)
246:
1.405 albertel 247: sub cleanenv {
1.412 www 248: # unless (defined(&Apache::exists_config_define("MODPERL2"))) { return; }
249: # unless (&Apache::exists_config_define("MODPERL2")) { return; }
1.405 albertel 250: foreach my $key (keys(%ENV)) {
251: if ($key =~ /^[a-z]/) {
252: delete($ENV{$key});
253: }
254: }
1.374 www 255: }
256:
257: # ------------------------------------------- Transfer profile into environment
258:
259: sub transfer_profile_to_env {
260: my ($lonidsdir,$handle)=@_;
261: my @profile;
262: {
1.448 albertel 263: open(my $idf,"$lonidsdir/$handle.id");
1.374 www 264: flock($idf,LOCK_SH);
265: @profile=<$idf>;
1.448 albertel 266: close($idf);
1.374 www 267: }
268: my $envi;
1.433 matthew 269: my %Remove;
1.374 www 270: for ($envi=0;$envi<=$#profile;$envi++) {
271: chomp($profile[$envi]);
272: my ($envname,$envvalue)=split(/=/,$profile[$envi]);
273: $ENV{$envname} = $envvalue;
1.433 matthew 274: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
275: if ($time < time-300) {
276: $Remove{$key}++;
277: }
278: }
279: }
1.446 albertel 280: $ENV{'user.environment'} = "$lonidsdir/$handle.id";
1.433 matthew 281: foreach my $expired_key (keys(%Remove)) {
282: &delenv($expired_key);
1.374 www 283: }
1.1 albertel 284: }
285:
1.5 www 286: # ---------------------------------------------------------- Append Environment
287:
288: sub appenv {
1.6 www 289: my %newenv=@_;
1.191 harris41 290: foreach (keys %newenv) {
1.35 www 291: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
292: &logthis("<font color=blue>WARNING: ".
1.151 www 293: "Attempt to modify environment ".$_." to ".$newenv{$_}
294: .'</font>');
1.35 www 295: delete($newenv{$_});
296: } else {
297: $ENV{$_}=$newenv{$_};
298: }
1.191 harris41 299: }
1.95 www 300:
301: my $lockfh;
1.448 albertel 302: unless (open($lockfh,"$ENV{'user.environment'}")) {
303: return 'error: '.$!;
1.95 www 304: }
305: unless (flock($lockfh,LOCK_EX)) {
306: &logthis("<font color=blue>WARNING: ".
307: 'Could not obtain exclusive lock in appenv: '.$!);
1.448 albertel 308: close($lockfh);
1.95 www 309: return 'error: '.$!;
310: }
311:
1.6 www 312: my @oldenv;
313: {
1.448 albertel 314: my $fh;
315: unless (open($fh,"$ENV{'user.environment'}")) {
316: return 'error: '.$!;
317: }
318: @oldenv=<$fh>;
319: close($fh);
1.6 www 320: }
321: for (my $i=0; $i<=$#oldenv; $i++) {
322: chomp($oldenv[$i]);
1.9 www 323: if ($oldenv[$i] ne '') {
1.448 albertel 324: my ($name,$value)=split(/=/,$oldenv[$i]);
325: unless (defined($newenv{$name})) {
326: $newenv{$name}=$value;
327: }
1.9 www 328: }
1.6 www 329: }
330: {
1.448 albertel 331: my $fh;
332: unless (open($fh,">$ENV{'user.environment'}")) {
333: return 'error';
334: }
335: my $newname;
336: foreach $newname (keys %newenv) {
337: print $fh "$newname=$newenv{$newname}\n";
338: }
339: close($fh);
1.56 www 340: }
1.448 albertel 341:
342: close($lockfh);
1.56 www 343: return 'ok';
344: }
345: # ----------------------------------------------------- Delete from Environment
346:
347: sub delenv {
348: my $delthis=shift;
349: my %newenv=();
350: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
351: &logthis("<font color=blue>WARNING: ".
352: "Attempt to delete from environment ".$delthis);
353: return 'error';
354: }
355: my @oldenv;
356: {
1.448 albertel 357: my $fh;
358: unless (open($fh,"$ENV{'user.environment'}")) {
359: return 'error';
360: }
361: unless (flock($fh,LOCK_SH)) {
362: &logthis("<font color=blue>WARNING: ".
363: 'Could not obtain shared lock in delenv: '.$!);
364: close($fh);
365: return 'error: '.$!;
366: }
367: @oldenv=<$fh>;
368: close($fh);
1.56 www 369: }
370: {
1.448 albertel 371: my $fh;
372: unless (open($fh,">$ENV{'user.environment'}")) {
373: return 'error';
374: }
375: unless (flock($fh,LOCK_EX)) {
376: &logthis("<font color=blue>WARNING: ".
377: 'Could not obtain exclusive lock in delenv: '.$!);
378: close($fh);
379: return 'error: '.$!;
380: }
381: foreach (@oldenv) {
1.473 matthew 382: if ($_=~/^$delthis/) {
383: my ($key,undef) = split('=',$_);
384: delete($ENV{$key});
385: } else {
386: print $fh $_;
387: }
1.448 albertel 388: }
389: close($fh);
1.5 www 390: }
391: return 'ok';
1.369 albertel 392: }
393:
394: # ------------------------------------------ Find out current server userload
395: # there is a copy in lond
396: sub userload {
397: my $numusers=0;
398: {
399: opendir(LONIDS,$perlvar{'lonIDsDir'});
400: my $filename;
401: my $curtime=time;
402: while ($filename=readdir(LONIDS)) {
403: if ($filename eq '.' || $filename eq '..') {next;}
1.404 albertel 404: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
1.437 albertel 405: if ($curtime-$mtime < 1800) { $numusers++; }
1.369 albertel 406: }
407: closedir(LONIDS);
408: }
409: my $userloadpercent=0;
410: my $maxuserload=$perlvar{'lonUserLoadLim'};
411: if ($maxuserload) {
1.371 albertel 412: $userloadpercent=100*$numusers/$maxuserload;
1.369 albertel 413: }
1.372 albertel 414: $userloadpercent=sprintf("%.2f",$userloadpercent);
1.369 albertel 415: return $userloadpercent;
1.283 www 416: }
417:
418: # ------------------------------------------ Fight off request when overloaded
419:
420: sub overloaderror {
421: my ($r,$checkserver)=@_;
422: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
423: my $loadavg;
424: if ($checkserver eq $perlvar{'lonHostID'}) {
1.448 albertel 425: open(my $loadfile,'/proc/loadavg');
1.283 www 426: $loadavg=<$loadfile>;
427: $loadavg =~ s/\s.*//g;
1.285 matthew 428: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
1.448 albertel 429: close($loadfile);
1.283 www 430: } else {
431: $loadavg=&reply('load',$checkserver);
432: }
1.285 matthew 433: my $overload=$loadavg-100;
1.283 www 434: if ($overload>0) {
1.285 matthew 435: $r->err_headers_out->{'Retry-After'}=$overload;
1.283 www 436: $r->log_error('Overload of '.$overload.' on '.$checkserver);
1.502 matthew 437: return 409;
1.283 www 438: }
439: return '';
1.5 www 440: }
1.1 albertel 441:
442: # ------------------------------ Find server with least workload from spare.tab
1.11 www 443:
1.1 albertel 444: sub spareserver {
1.370 albertel 445: my ($loadpercent,$userloadpercent) = @_;
1.1 albertel 446: my $tryserver;
447: my $spareserver='';
1.370 albertel 448: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
449: my $lowestserver=$loadpercent > $userloadpercent?
450: $loadpercent : $userloadpercent;
1.1 albertel 451: foreach $tryserver (keys %spareid) {
1.411 albertel 452: my $loadans=reply('load',$tryserver);
453: my $userloadans=reply('userload',$tryserver);
454: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
455: next; #didn't get a number from the server
456: }
457: my $answer;
458: if ($loadans =~ /\d/) {
459: if ($userloadans =~ /\d/) {
460: #both are numbers, pick the bigger one
461: $answer=$loadans > $userloadans?
462: $loadans : $userloadans;
463: } else {
464: $answer = $loadans;
465: }
466: } else {
467: $answer = $userloadans;
468: }
469: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
470: $spareserver="http://$hostname{$tryserver}";
471: $lowestserver=$answer;
472: }
1.370 albertel 473: }
1.1 albertel 474: return $spareserver;
1.202 matthew 475: }
476:
477: # --------------------------------------------- Try to change a user's password
478:
479: sub changepass {
480: my ($uname,$udom,$currentpass,$newpass,$server)=@_;
481: $currentpass = &escape($currentpass);
482: $newpass = &escape($newpass);
483: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass",
484: $server);
485: if (! $answer) {
486: &logthis("No reply on password change request to $server ".
487: "by $uname in domain $udom.");
488: } elsif ($answer =~ "^ok") {
489: &logthis("$uname in $udom successfully changed their password ".
490: "on $server.");
491: } elsif ($answer =~ "^pwchange_failure") {
492: &logthis("$uname in $udom was unable to change their password ".
493: "on $server. The action was blocked by either lcpasswd ".
494: "or pwchange");
495: } elsif ($answer =~ "^non_authorized") {
496: &logthis("$uname in $udom did not get their password correct when ".
497: "attempting to change it on $server.");
498: } elsif ($answer =~ "^auth_mode_error") {
499: &logthis("$uname in $udom attempted to change their password despite ".
500: "not being locally or internally authenticated on $server.");
501: } elsif ($answer =~ "^unknown_user") {
502: &logthis("$uname in $udom attempted to change their password ".
503: "on $server but were unable to because $server is not ".
504: "their home server.");
505: } elsif ($answer =~ "^refused") {
506: &logthis("$server refused to change $uname in $udom password because ".
507: "it was sent an unencrypted request to change the password.");
508: }
509: return $answer;
1.1 albertel 510: }
511:
1.169 harris41 512: # ----------------------- Try to determine user's current authentication scheme
513:
514: sub queryauthenticate {
515: my ($uname,$udom)=@_;
1.456 albertel 516: my $uhome=&homeserver($uname,$udom);
517: if (!$uhome) {
518: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
519: return 'no_host';
520: }
521: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
522: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
523: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.169 harris41 524: }
1.456 albertel 525: return $answer;
1.169 harris41 526: }
527:
1.1 albertel 528: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 529:
1.1 albertel 530: sub authenticate {
531: my ($uname,$upass,$udom)=@_;
1.12 www 532: $upass=escape($upass);
1.199 www 533: $uname=~s/\W//g;
1.471 albertel 534: my $uhome=&homeserver($uname,$udom);
535: if (!$uhome) {
536: &logthis("User $uname at $udom is unknown in authenticate");
537: return 'no_host';
1.1 albertel 538: }
1.471 albertel 539: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
540: if ($answer eq 'authorized') {
541: &logthis("User $uname at $udom authorized by $uhome");
542: return $uhome;
543: }
544: if ($answer eq 'non_authorized') {
545: &logthis("User $uname at $udom rejected by $uhome");
546: return 'no_host';
1.9 www 547: }
1.471 albertel 548: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.1 albertel 549: return 'no_host';
550: }
551:
552: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 553:
1.1 albertel 554: sub homeserver {
1.230 stredwic 555: my ($uname,$udom,$ignoreBadCache)=@_;
1.1 albertel 556: my $index="$uname:$udom";
1.426 albertel 557:
558: my ($result,$cached)=&is_cached(\%homecache,$index,'home',86400);
559: if (defined($cached)) { return $result; }
1.1 albertel 560: my $tryserver;
561: foreach $tryserver (keys %libserv) {
1.230 stredwic 562: next if ($ignoreBadCache ne 'true' &&
1.231 stredwic 563: exists($badServerCache{$tryserver}));
1.1 albertel 564: if ($hostdom{$tryserver} eq $udom) {
565: my $answer=reply("home:$udom:$uname",$tryserver);
566: if ($answer eq 'found') {
1.426 albertel 567: return &do_cache(\%homecache,$index,$tryserver,'home');
1.231 stredwic 568: } elsif ($answer eq 'no_host') {
569: $badServerCache{$tryserver}=1;
1.221 matthew 570: }
1.1 albertel 571: }
572: }
573: return 'no_host';
1.70 www 574: }
575:
576: # ------------------------------------- Find the usernames behind a list of IDs
577:
578: sub idget {
579: my ($udom,@ids)=@_;
580: my %returnhash=();
581:
582: my $tryserver;
583: foreach $tryserver (keys %libserv) {
584: if ($hostdom{$tryserver} eq $udom) {
585: my $idlist=join('&',@ids);
586: $idlist=~tr/A-Z/a-z/;
587: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
588: my @answer=();
1.76 www 589: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 590: @answer=split(/\&/,$reply);
591: } ;
592: my $i;
593: for ($i=0;$i<=$#ids;$i++) {
594: if ($answer[$i]) {
595: $returnhash{$ids[$i]}=$answer[$i];
596: }
597: }
598: }
599: }
600: return %returnhash;
601: }
602:
603: # ------------------------------------- Find the IDs behind a list of usernames
604:
605: sub idrget {
606: my ($udom,@unames)=@_;
607: my %returnhash=();
1.191 harris41 608: foreach (@unames) {
1.70 www 609: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
1.191 harris41 610: }
1.70 www 611: return %returnhash;
612: }
613:
614: # ------------------------------- Store away a list of names and associated IDs
615:
616: sub idput {
617: my ($udom,%ids)=@_;
618: my %servers=();
1.191 harris41 619: foreach (keys %ids) {
1.487 albertel 620: &cput('environment',{'id'=>$ids{$_}},$udom,$_);
1.70 www 621: my $uhom=&homeserver($_,$udom);
622: if ($uhom ne 'no_host') {
623: my $id=&escape($ids{$_});
624: $id=~tr/A-Z/a-z/;
625: my $unam=&escape($_);
626: if ($servers{$uhom}) {
627: $servers{$uhom}.='&'.$id.'='.$unam;
628: } else {
629: $servers{$uhom}=$id.'='.$unam;
630: }
631: }
1.191 harris41 632: }
633: foreach (keys %servers) {
1.70 www 634: &critical('idput:'.$udom.':'.$servers{$_},$_);
1.191 harris41 635: }
1.344 www 636: }
637:
638: # --------------------------------------------------- Assign a key to a student
639:
640: sub assign_access_key {
1.364 www 641: #
642: # a valid key looks like uname:udom#comments
643: # comments are being appended
644: #
1.498 www 645: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
646: $kdom=
647: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($kdom));
648: $knum=
649: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($knum));
1.344 www 650: $cdom=
651: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
652: $cnum=
653: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
654: $udom=$ENV{'user.name'} unless (defined($udom));
655: $uname=$ENV{'user.domain'} unless (defined($uname));
1.498 www 656: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1.364 www 657: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1.479 albertel 658: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1.364 www 659: # assigned to this person
660: # - this should not happen,
1.345 www 661: # unless something went wrong
662: # the first time around
663: # ready to assign
1.364 www 664: $logentry=$1.'; '.$logentry;
1.496 www 665: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1.498 www 666: $kdom,$knum) eq 'ok') {
1.345 www 667: # key now belongs to user
1.346 www 668: my $envkey='key.'.$cdom.'_'.$cnum;
1.345 www 669: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
670: &appenv('environment.'.$envkey => $ckey);
671: return 'ok';
672: } else {
673: return
674: 'error: Count not permanently assign key, will need to be re-entered later.';
675: }
676: } else {
677: return 'error: Could not assign key, try again later.';
678: }
1.364 www 679: } elsif (!$existing{$ckey}) {
1.345 www 680: # the key does not exist
681: return 'error: The key does not exist';
682: } else {
683: # the key is somebody else's
684: return 'error: The key is already in use';
685: }
1.344 www 686: }
687:
1.364 www 688: # ------------------------------------------ put an additional comment on a key
689:
690: sub comment_access_key {
691: #
692: # a valid key looks like uname:udom#comments
693: # comments are being appended
694: #
695: my ($ckey,$cdom,$cnum,$logentry)=@_;
696: $cdom=
697: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
698: $cnum=
699: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
700: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
701: if ($existing{$ckey}) {
702: $existing{$ckey}.='; '.$logentry;
703: # ready to assign
1.367 www 704: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1.364 www 705: $cdom,$cnum) eq 'ok') {
706: return 'ok';
707: } else {
708: return 'error: Count not store comment.';
709: }
710: } else {
711: # the key does not exist
712: return 'error: The key does not exist';
713: }
714: }
715:
1.344 www 716: # ------------------------------------------------------ Generate a set of keys
717:
718: sub generate_access_keys {
1.364 www 719: my ($number,$cdom,$cnum,$logentry)=@_;
1.344 www 720: $cdom=
721: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
722: $cnum=
723: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
1.361 www 724: unless (&allowed('mky',$cdom)) { return 0; }
1.344 www 725: unless (($cdom) && ($cnum)) { return 0; }
726: if ($number>10000) { return 0; }
727: sleep(2); # make sure don't get same seed twice
728: srand(time()^($$+($$<<15))); # from "Programming Perl"
729: my $total=0;
730: for (my $i=1;$i<=$number;$i++) {
731: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
732: sprintf("%lx",int(100000*rand)).'-'.
733: sprintf("%lx",int(100000*rand));
734: $newkey=~s/1/g/g; # folks mix up 1 and l
735: $newkey=~s/0/h/g; # and also 0 and O
736: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
737: if ($existing{$newkey}) {
738: $i--;
739: } else {
1.364 www 740: if (&put('accesskeys',
741: { $newkey => '# generated '.localtime().
742: ' by '.$ENV{'user.name'}.'@'.$ENV{'user.domain'}.
743: '; '.$logentry },
744: $cdom,$cnum) eq 'ok') {
1.344 www 745: $total++;
746: }
747: }
748: }
749: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
750: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
751: return $total;
752: }
753:
754: # ------------------------------------------------------- Validate an accesskey
755:
756: sub validate_access_key {
757: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
758: $cdom=
759: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
760: $cnum=
761: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
1.497 www 762: $udom=$ENV{'user.domain'} unless (defined($udom));
763: $uname=$ENV{'user.name'} unless (defined($uname));
1.345 www 764: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1.479 albertel 765: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1.70 www 766: }
767:
768: # ------------------------------------- Find the section of student in a course
1.298 matthew 769:
770: sub getsection {
771: my ($udom,$unam,$courseid)=@_;
772: $courseid=~s/\_/\//g;
773: $courseid=~s/^(\w)/\/$1/;
774: my %Pending;
775: my %Expired;
776: #
777: # Each role can either have not started yet (pending), be active,
778: # or have expired.
779: #
780: # If there is an active role, we are done.
781: #
782: # If there is more than one role which has not started yet,
783: # choose the one which will start sooner
784: # If there is one role which has not started yet, return it.
785: #
786: # If there is more than one expired role, choose the one which ended last.
787: # If there is a role which has expired, return it.
788: #
789: foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
790: &homeserver($unam,$udom)))) {
791: my ($key,$value)=split(/\=/,$_);
792: $key=&unescape($key);
1.479 albertel 793: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1.298 matthew 794: my $section=$1;
795: if ($key eq $courseid.'_st') { $section=''; }
796: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
797: my $now=time;
1.523.2.8! albertel 798: if (defined($end) && $end && ($now > $end)) {
1.298 matthew 799: $Expired{$end}=$section;
800: next;
801: }
1.523.2.8! albertel 802: if (defined($start) && $start && ($now < $start)) {
1.298 matthew 803: $Pending{$start}=$section;
804: next;
805: }
806: return $section;
807: }
808: #
809: # Presumedly there will be few matching roles from the above
810: # loop and the sorting time will be negligible.
811: if (scalar(keys(%Pending))) {
812: my ($time) = sort {$a <=> $b} keys(%Pending);
813: return $Pending{$time};
814: }
815: if (scalar(keys(%Expired))) {
816: my @sorted = sort {$a <=> $b} keys(%Expired);
817: my $time = pop(@sorted);
818: return $Expired{$time};
819: }
820: return '-1';
821: }
1.70 www 822:
1.452 albertel 823:
824: my $disk_caching_disabled=1;
825:
1.416 albertel 826: sub devalidate_cache {
1.428 albertel 827: my ($cache,$id,$name) = @_;
1.417 albertel 828: delete $$cache{$id.'.time'};
1.523.2.5 albertel 829: delete $$cache{$id.'.file'};
1.417 albertel 830: delete $$cache{$id};
1.523.2.3 albertel 831: if (1 || $disk_caching_disabled) { return; }
1.442 albertel 832: my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
1.523.2.3 albertel 833: if (!-e $filename) { return; }
834: open(DB,">$filename.lock");
1.428 albertel 835: flock(DB,LOCK_EX);
836: my %hash;
837: if (tie(%hash,'GDBM_File',$filename,&GDBM_WRCREAT(),0640)) {
1.442 albertel 838: eval <<'EVALBLOCK';
839: delete($hash{$id});
840: delete($hash{$id.'.time'});
841: EVALBLOCK
842: if ($@) {
843: &logthis("<font color='red'>devalidate_cache blew up :$@:$name</font>");
844: unlink($filename);
845: }
1.428 albertel 846: } else {
1.442 albertel 847: if (-e $filename) {
848: &logthis("Unable to tie hash (devalidate cache): $name");
849: unlink($filename);
850: }
1.428 albertel 851: }
852: untie(%hash);
853: flock(DB,LOCK_UN);
854: close(DB);
1.416 albertel 855: }
856:
857: sub is_cached {
1.425 albertel 858: my ($cache,$id,$name,$time) = @_;
1.420 albertel 859: if (!$time) { $time=300; }
1.416 albertel 860: if (!exists($$cache{$id.'.time'})) {
1.523.2.4 albertel 861: &load_cache_item($cache,$name,$id,$time);
1.425 albertel 862: }
863: if (!exists($$cache{$id.'.time'})) {
864: # &logthis("Didn't find $id");
1.417 albertel 865: return (undef,undef);
1.416 albertel 866: } else {
1.425 albertel 867: if (time-($$cache{$id.'.time'})>$time) {
1.523.2.5 albertel 868: if (exists($$cache{$id.'.file'})) {
869: foreach my $filename (@{ $$cache{$id.'.file'} }) {
870: my $mtime=(stat($filename))[9];
871: #+1 is to take care of edge effects
872: if ($mtime && (($mtime+1) < ($$cache{$id.'.time'}))) {
873: # &logthis("Upping $mtime - ".$$cache{$id.'.time'}.
874: # "$id because of $filename");
875: } else {
1.523.2.6 albertel 876: # &logthis("Devalidating $filename $id - ".(time-($$cache{$id.'.time'})));
1.523.2.5 albertel 877: &devalidate_cache($cache,$id,$name);
878: return (undef,undef);
879: }
880: }
881: $$cache{$id.'.time'}=time;
882: } else {
883: # &logthis("Devalidating $id - ".time-($$cache{$id.'.time'}));
884: &devalidate_cache($cache,$id,$name);
885: return (undef,undef);
886: }
1.416 albertel 887: }
888: }
1.417 albertel 889: return ($$cache{$id},1);
1.416 albertel 890: }
891:
892: sub do_cache {
1.425 albertel 893: my ($cache,$id,$value,$name) = @_;
1.416 albertel 894: $$cache{$id.'.time'}=time;
1.425 albertel 895: $$cache{$id}=$value;
1.428 albertel 896: # &logthis("Caching $id as :$value:");
897: &save_cache_item($cache,$name,$id);
1.416 albertel 898: # do_cache implictly return the set value
1.425 albertel 899: $$cache{$id};
900: }
901:
1.523.2.3 albertel 902: my %do_save_item;
903: my %do_save;
1.428 albertel 904: sub save_cache_item {
905: my ($cache,$name,$id)=@_;
1.452 albertel 906: if ($disk_caching_disabled) { return; }
1.523.2.3 albertel 907: $do_save{$name}=$cache;
908: if (!exists($do_save_item{$name})) { $do_save_item{$name}={} }
909: $do_save_item{$name}->{$id}=1;
910: return;
911: }
912:
913: sub save_cache {
914: if ($disk_caching_disabled) { return; }
915: my ($cache,$name,$id);
916: foreach $name (keys(%do_save)) {
917: $cache=$do_save{$name};
918:
919: my $starttime=&Time::HiRes::time();
920: &logthis("Saving :$name:");
921: my %hash;
922: my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
923: open(DB,">$filename.lock");
924: flock(DB,LOCK_EX);
925: if (tie(%hash,'GDBM_File',$filename,&GDBM_WRCREAT(),0640)) {
926: foreach $id (keys(%{ $do_save_item{$name} })) {
927: eval <<'EVALBLOCK';
928: $hash{$id.'.time'}=$$cache{$id.'.time'};
929: $hash{$id}=freeze({'item'=>$$cache{$id}});
1.523.2.5 albertel 930: if (exists($$cache{$id.'.file'})) {
931: $hash{$id.'.file'}=freeze({'item'=>$$cache{$id.'.file'}});
932: }
1.442 albertel 933: EVALBLOCK
1.523.2.3 albertel 934: if ($@) {
935: &logthis("<font color='red'>save_cache blew up :$@:$name</font>");
936: unlink($filename);
937: last;
938: }
939: }
940: } else {
941: if (-e $filename) {
942: &logthis("Unable to tie hash (save cache): $name ($!)");
943: unlink($filename);
944: }
1.442 albertel 945: }
1.523.2.3 albertel 946: untie(%hash);
947: flock(DB,LOCK_UN);
948: close(DB);
949: &logthis("save_cache $name took ".(&Time::HiRes::time()-$starttime));
1.428 albertel 950: }
1.523.2.3 albertel 951: undef(%do_save);
952: undef(%do_save_item);
953:
1.428 albertel 954: }
955:
956: sub load_cache_item {
1.523.2.4 albertel 957: my ($cache,$name,$id,$time)=@_;
1.452 albertel 958: if ($disk_caching_disabled) { return; }
1.428 albertel 959: my $starttime=&Time::HiRes::time();
960: # &logthis("Before Loading $name for $id size is ".scalar(%$cache));
961: my %hash;
1.442 albertel 962: my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
1.523.2.3 albertel 963: if (!-e $filename) { return; }
964: open(DB,">$filename.lock");
1.428 albertel 965: flock(DB,LOCK_SH);
966: if (tie(%hash,'GDBM_File',$filename,&GDBM_READER(),0640)) {
1.442 albertel 967: eval <<'EVALBLOCK';
968: if (!%$cache) {
969: my $count;
970: while (my ($key,$value)=each(%hash)) {
971: $count++;
972: if ($key =~ /\.time$/) {
973: $$cache{$key}=$value;
974: } else {
975: my $hashref=thaw($value);
976: $$cache{$key}=$hashref->{'item'};
977: }
1.428 albertel 978: }
1.442 albertel 979: # &logthis("Initial load: $count");
980: } else {
1.523.2.4 albertel 981: if (($$cache{$id.'.time'}+$time) < time) {
982: $$cache{$id.'.time'}=$hash{$id.'.time'};
1.523.2.5 albertel 983: {
984: my $hashref=thaw($hash{$id});
985: $$cache{$id}=$hashref->{'item'};
986: }
987: if (exists($hash{$id.'.file'})) {
988: my $hashref=thaw($hash{$id.'.file'});
989: $$cache{$id.'.file'}=$hashref->{'item'};
990: }
1.523.2.4 albertel 991: }
1.428 albertel 992: }
1.442 albertel 993: EVALBLOCK
994: if ($@) {
995: &logthis("<font color='red'>load_cache blew up :$@:$name</font>");
996: unlink($filename);
997: }
998: } else {
999: if (-e $filename) {
1.445 www 1000: &logthis("Unable to tie hash (load cache item): $name ($!)");
1.442 albertel 1001: unlink($filename);
1.428 albertel 1002: }
1003: }
1004: untie(%hash);
1005: flock(DB,LOCK_UN);
1006: close(DB);
1007: # &logthis("After Loading $name size is ".scalar(%$cache));
1008: # &logthis("load_cache_item $name took ".(&Time::HiRes::time()-$starttime));
1009: }
1010:
1.70 www 1011: sub usection {
1012: my ($udom,$unam,$courseid)=@_;
1.416 albertel 1013: my $hashid="$udom:$unam:$courseid";
1014:
1.425 albertel 1015: my ($result,$cached)=&is_cached(\%usectioncache,$hashid,'usection');
1.417 albertel 1016: if (defined($cached)) { return $result; }
1.70 www 1017: $courseid=~s/\_/\//g;
1018: $courseid=~s/^(\w)/\/$1/;
1.191 harris41 1019: foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
1020: &homeserver($unam,$udom)))) {
1.70 www 1021: my ($key,$value)=split(/\=/,$_);
1022: $key=&unescape($key);
1.479 albertel 1023: if ($key=~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/) {
1.70 www 1024: my $section=$1;
1025: if ($key eq $courseid.'_st') { $section=''; }
1026: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
1027: my $now=time;
1028: my $notactive=0;
1029: if ($start) {
1030: if ($now<$start) { $notactive=1; }
1031: }
1032: if ($end) {
1033: if ($now>$end) { $notactive=1; }
1034: }
1.416 albertel 1035: unless ($notactive) {
1.425 albertel 1036: return &do_cache(\%usectioncache,$hashid,$section,'usection');
1.416 albertel 1037: }
1.70 www 1038: }
1.191 harris41 1039: }
1.425 albertel 1040: return &do_cache(\%usectioncache,$hashid,'-1','usection');
1.70 www 1041: }
1042:
1043: # ------------------------------------- Read an entry from a user's environment
1044:
1045: sub userenvironment {
1046: my ($udom,$unam,@what)=@_;
1047: my %returnhash=();
1048: my @answer=split(/\&/,
1049: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1050: &homeserver($unam,$udom)));
1051: my $i;
1052: for ($i=0;$i<=$#what;$i++) {
1053: $returnhash{$what[$i]}=&unescape($answer[$i]);
1054: }
1055: return %returnhash;
1.1 albertel 1056: }
1057:
1.263 www 1058: # -------------------------------------------------------------------- New chat
1059:
1060: sub chatsend {
1061: my ($newentry,$anon)=@_;
1062: my $cnum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1063: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1064: my $chome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1065: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1066: &escape($ENV{'user.domain'}.':'.$ENV{'user.name'}.':'.$anon.':'.
1067: &escape($newentry)),$chome);
1.292 www 1068: }
1069:
1070: # ------------------------------------------ Find current version of a resource
1071:
1072: sub getversion {
1073: my $fname=&clutter(shift);
1074: unless ($fname=~/^\/res\//) { return -1; }
1075: return ¤tversion(&filelocation('',$fname));
1076: }
1077:
1078: sub currentversion {
1079: my $fname=shift;
1.440 www 1080: my ($result,$cached)=&is_cached(\%resversioncache,$fname,'resversion',600);
1081: if (defined($cached)) { return $result; }
1.292 www 1082: my $author=$fname;
1083: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1084: my ($udom,$uname)=split(/\//,$author);
1085: my $home=homeserver($uname,$udom);
1086: if ($home eq 'no_host') {
1087: return -1;
1088: }
1089: my $answer=reply("currentversion:$fname",$home);
1090: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1091: return -1;
1092: }
1.440 www 1093: return &do_cache(\%resversioncache,$fname,$answer,'resversion');
1.263 www 1094: }
1095:
1.1 albertel 1096: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 1097:
1.1 albertel 1098: sub subscribe {
1099: my $fname=shift;
1.312 www 1100: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1.523.2.1 albertel 1101: $fname=~s/[\n\r]//g;
1.1 albertel 1102: my $author=$fname;
1103: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1104: my ($udom,$uname)=split(/\//,$author);
1105: my $home=homeserver($uname,$udom);
1.335 albertel 1106: if ($home eq 'no_host') {
1107: return 'not_found';
1.1 albertel 1108: }
1109: my $answer=reply("sub:$fname",$home);
1.64 www 1110: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1111: $answer.=' by '.$home;
1112: }
1.1 albertel 1113: return $answer;
1114: }
1115:
1.8 www 1116: # -------------------------------------------------------------- Replicate file
1117:
1118: sub repcopy {
1119: my $filename=shift;
1.23 www 1120: $filename=~s/\/+/\//g;
1.214 www 1121: if ($filename=~/^\/home\/httpd\/html\/adm\//) { return OK; }
1.523.2.1 albertel 1122: $filename=~s/[\n\r]//g;
1.8 www 1123: my $transname="$filename.in.transfer";
1.17 www 1124: if ((-e $filename) || (-e $transname)) { return OK; }
1.8 www 1125: my $remoteurl=subscribe($filename);
1.64 www 1126: if ($remoteurl =~ /^con_lost by/) {
1127: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 1128: return HTTP_SERVICE_UNAVAILABLE;
1129: } elsif ($remoteurl eq 'not_found') {
1.441 albertel 1130: #&logthis("Subscribe returned not_found: $filename");
1.8 www 1131: return HTTP_NOT_FOUND;
1.64 www 1132: } elsif ($remoteurl =~ /^rejected by/) {
1133: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 1134: return FORBIDDEN;
1.20 www 1135: } elsif ($remoteurl eq 'directory') {
1136: return OK;
1.8 www 1137: } else {
1.290 www 1138: my $author=$filename;
1139: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1140: my ($udom,$uname)=split(/\//,$author);
1141: my $home=homeserver($uname,$udom);
1142: unless ($home eq $perlvar{'lonHostID'}) {
1.8 www 1143: my @parts=split(/\//,$filename);
1144: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1145: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1146: &logthis("Malconfiguration for replication: $filename");
1147: return HTTP_BAD_REQUEST;
1148: }
1149: my $count;
1150: for ($count=5;$count<$#parts;$count++) {
1151: $path.="/$parts[$count]";
1152: if ((-e $path)!=1) {
1153: mkdir($path,0777);
1154: }
1155: }
1156: my $ua=new LWP::UserAgent;
1157: my $request=new HTTP::Request('GET',"$remoteurl");
1158: my $response=$ua->request($request,$transname);
1159: if ($response->is_error()) {
1160: unlink($transname);
1161: my $message=$response->status_line;
1.12 www 1162: &logthis("<font color=blue>WARNING:"
1163: ." LWP get: $message: $filename</font>");
1.8 www 1164: return HTTP_SERVICE_UNAVAILABLE;
1165: } else {
1.16 www 1166: if ($remoteurl!~/\.meta$/) {
1167: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1168: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1169: if ($mresponse->is_error()) {
1170: unlink($filename.'.meta');
1171: &logthis(
1172: "<font color=yellow>INFO: No metadata: $filename</font>");
1173: }
1174: }
1.8 www 1175: rename($transname,$filename);
1176: return OK;
1177: }
1.290 www 1178: }
1.8 www 1179: }
1.330 www 1180: }
1181:
1182: # ------------------------------------------------ Get server side include body
1183: sub ssi_body {
1.381 albertel 1184: my ($filelink,%form)=@_;
1.330 www 1185: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1.381 albertel 1186: &ssi($filelink,%form));
1.451 albertel 1187: $output=~s/^.*?\<body[^\>]*\>//si;
1188: $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
1.331 www 1189: $output=~
1190: s/\/\/ BEGIN LON\-CAPA Internal.+\/\/ END LON\-CAPA Internal\s//gs;
1.330 www 1191: return $output;
1.8 www 1192: }
1193:
1.15 www 1194: # --------------------------------------------------------- Server Side Include
1195:
1196: sub ssi {
1197:
1.23 www 1198: my ($fn,%form)=@_;
1.15 www 1199:
1200: my $ua=new LWP::UserAgent;
1.23 www 1201:
1202: my $request;
1203:
1204: if (%form) {
1205: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
1.201 albertel 1206: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1.23 www 1207: } else {
1208: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
1209: }
1210:
1.15 www 1211: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1212: my $response=$ua->request($request);
1213:
1.324 www 1214: return $response->content;
1215: }
1216:
1217: sub externalssi {
1218: my ($url)=@_;
1219: my $ua=new LWP::UserAgent;
1220: my $request=new HTTP::Request('GET',$url);
1221: my $response=$ua->request($request);
1.15 www 1222: return $response->content;
1223: }
1.254 www 1224:
1.492 albertel 1225: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1226:
1227: sub allowuploaded {
1228: my ($srcurl,$url)=@_;
1229: $url=&clutter(&declutter($url));
1230: my $dir=$url;
1231: $dir=~s/\/[^\/]+$//;
1232: my %httpref=();
1233: my $httpurl=&hreflocation('',$url);
1234: $httpref{'httpref.'.$httpurl}=$srcurl;
1235: &Apache::lonnet::appenv(%httpref);
1.254 www 1236: }
1.477 raeburn 1237:
1.478 albertel 1238: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1239: # input: action, courseID, current domain, home server for course, intended
1240: # path to file, source of file.
1.485 raeburn 1241: # output: url to file (if action was uploaddoc),
1242: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1.477 raeburn 1243: #
1.478 albertel 1244: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1245: # course.
1.477 raeburn 1246: #
1.478 albertel 1247: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1248: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1249: # course's home server.
1.477 raeburn 1250: #
1.478 albertel 1251: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1252: # be copied from $source (current location) to
1253: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1254: # and will then be copied to
1255: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1256: # course's home server.
1.485 raeburn 1257: #
1.481 raeburn 1258: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1.485 raeburn 1259: # will be retrived from $ENV{form.uploaddoc} (from DOCS interface) to
1.481 raeburn 1260: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1261: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1262: # in course's home server.
1263:
1.477 raeburn 1264:
1265: sub process_coursefile {
1266: my ($action,$docuname,$docudom,$docuhome,$file,$source)=@_;
1267: my $fetchresult;
1268: if ($action eq 'propagate') {
1269: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file
1270: ,$docuhome);
1.481 raeburn 1271: } else {
1.477 raeburn 1272: my $fetchresult = '';
1273: my $fpath = '';
1274: my $fname = $file;
1.478 albertel 1275: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1.477 raeburn 1276: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1277: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1278: unless ($fpath eq '') {
1.478 albertel 1279: my @parts=split('/',$fpath);
1.477 raeburn 1280: foreach my $part (@parts) {
1281: $filepath.= '/'.$part;
1282: if ((-e $filepath)!=1) {
1283: mkdir($filepath,0777);
1284: }
1285: }
1286: }
1.481 raeburn 1287: if ($action eq 'copy') {
1288: if ($source eq '') {
1289: $fetchresult = 'no source file';
1290: return $fetchresult;
1291: } else {
1292: my $destination = $filepath.'/'.$fname;
1293: rename($source,$destination);
1294: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1295: $docuhome);
1296: }
1297: } elsif ($action eq 'uploaddoc') {
1298: open(my $fh,'>'.$filepath.'/'.$fname);
1299: print $fh $ENV{'form.'.$source};
1300: close($fh);
1.477 raeburn 1301: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1302: $docuhome);
1.481 raeburn 1303: if ($fetchresult eq 'ok') {
1304: return '/uploaded/'.$fpath.'/'.$fname;
1305: } else {
1306: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1307: ' to host '.$docuhome.': '.$fetchresult);
1308: return '/adm/notfound.html';
1309: }
1.477 raeburn 1310: }
1311: }
1.485 raeburn 1312: unless ( $fetchresult eq 'ok') {
1.477 raeburn 1313: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1314: ' to host '.$docuhome.': '.$fetchresult);
1315: }
1316: return $fetchresult;
1317: }
1318:
1.257 www 1319: # --------------- Take an uploaded file and put it into the userfiles directory
1.259 www 1320: # input: name of form element, coursedoc=1 means this is for the course
1.257 www 1321: # output: url of file in userspace
1322:
1323: sub userfileupload {
1.493 albertel 1324: my ($formname,$coursedoc,$subdir)=@_;
1325: if (!defined($subdir)) { $subdir='unknown'; }
1.477 raeburn 1326: my $fname=$ENV{'form.'.$formname.'.filename'};
1.315 www 1327: # Replace Windows backslashes by forward slashes
1.257 www 1328: $fname=~s/\\/\//g;
1.315 www 1329: # Get rid of everything but the actual filename
1.257 www 1330: $fname=~s/^.*\/([^\/]+)$/$1/;
1.315 www 1331: # Replace spaces by underscores
1332: $fname=~s/\s+/\_/g;
1333: # Replace all other weird characters by nothing
1.317 www 1334: $fname=~s/[^\w\.\-]//g;
1.315 www 1335: # See if there is anything left
1.257 www 1336: unless ($fname) { return 'error: no uploaded file'; }
1.477 raeburn 1337: chop($ENV{'form.'.$formname});
1.523 raeburn 1338: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1339: my $now = time;
1340: my $filepath = 'tmp/helprequests/'.$now;
1341: my @parts=split(/\//,$filepath);
1342: my $fullpath = $perlvar{'lonDaemons'};
1343: for (my $i=0;$i<@parts;$i++) {
1344: $fullpath .= '/'.$parts[$i];
1345: if ((-e $fullpath)!=1) {
1346: mkdir($fullpath,0777);
1347: }
1348: }
1349: open(my $fh,'>'.$fullpath.'/'.$fname);
1350: print $fh $ENV{'form.'.$formname};
1351: close($fh);
1352: return $fullpath.'/'.$fname;
1353: }
1.258 www 1354: # Create the directory if not present
1.259 www 1355: my $docuname='';
1356: my $docudom='';
1357: my $docuhome='';
1.493 albertel 1358: $fname="$subdir/$fname";
1.259 www 1359: if ($coursedoc) {
1360: $docuname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1361: $docudom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1362: $docuhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.481 raeburn 1363: if ($ENV{'form.folder'} =~ m/^default/) {
1.485 raeburn 1364: return &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname);
1.481 raeburn 1365: } else {
1366: $fname=$ENV{'form.folder'}.'/'.$fname;
1.485 raeburn 1367: return &process_coursefile('uploaddoc',$docuname,$docudom,$docuhome,$fname,$formname);
1.481 raeburn 1368: }
1.259 www 1369: } else {
1370: $docuname=$ENV{'user.name'};
1371: $docudom=$ENV{'user.domain'};
1372: $docuhome=$ENV{'user.home'};
1.485 raeburn 1373: return &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname);
1.259 www 1374: }
1.271 www 1375: }
1376:
1377: sub finishuserfileupload {
1.477 raeburn 1378: my ($docuname,$docudom,$docuhome,$formname,$fname)=@_;
1379: my $path=$docudom.'/'.$docuname.'/';
1.258 www 1380: my $filepath=$perlvar{'lonDocRoot'};
1.494 albertel 1381: my ($fnamepath,$file);
1382: $file=$fname;
1383: if ($fname=~m|/|) {
1384: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1385: $path.=$fnamepath.'/';
1386: }
1.259 www 1387: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
1.258 www 1388: my $count;
1389: for ($count=4;$count<=$#parts;$count++) {
1390: $filepath.="/$parts[$count]";
1391: if ((-e $filepath)!=1) {
1392: mkdir($filepath,0777);
1393: }
1394: }
1395: # Save the file
1396: {
1.500 albertel 1397: #&Apache::lonnet::logthis("Saving to $filepath $file");
1.494 albertel 1398: open(my $fh,'>'.$filepath.'/'.$file);
1.477 raeburn 1399: print $fh $ENV{'form.'.$formname};
1400: close($fh);
1.258 www 1401: }
1.259 www 1402: # Notify homeserver to grep it
1403: #
1.494 albertel 1404: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
1.295 www 1405: if ($fetchresult eq 'ok') {
1.259 www 1406: #
1.258 www 1407: # Return the URL to it
1.494 albertel 1408: return '/uploaded/'.$path.$file;
1.263 www 1409: } else {
1.494 albertel 1410: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
1411: ': '.$fetchresult);
1.263 www 1412: return '/adm/notfound.html';
1413: }
1.493 albertel 1414: }
1415:
1416: sub removeuploadedurl {
1417: my ($url)=@_;
1418: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
1419: return &Apache::lonnet::removeuserfile($uname,$udom,$fname);
1.490 albertel 1420: }
1421:
1422: sub removeuserfile {
1423: my ($docuname,$docudom,$fname)=@_;
1424: my $home=&homeserver($docuname,$docudom);
1425: return &reply("removeuserfile:$docudom/$docuname/$fname",$home);
1.257 www 1426: }
1.15 www 1427:
1.14 www 1428: # ------------------------------------------------------------------------- Log
1429:
1430: sub log {
1431: my ($dom,$nam,$hom,$what)=@_;
1.47 www 1432: return critical("log:$dom:$nam:$what",$hom);
1.157 www 1433: }
1434:
1435: # ------------------------------------------------------------------ Course Log
1.352 www 1436: #
1437: # This routine flushes several buffers of non-mission-critical nature
1438: #
1.157 www 1439:
1440: sub flushcourselogs {
1.352 www 1441: &logthis('Flushing log buffers');
1442: #
1443: # course logs
1444: # This is a log of all transactions in a course, which can be used
1445: # for data mining purposes
1446: #
1447: # It also collects the courseid database, which lists last transaction
1448: # times and course titles for all courseids
1449: #
1450: my %courseidbuffer=();
1.191 harris41 1451: foreach (keys %courselogs) {
1.157 www 1452: my $crsid=$_;
1.352 www 1453: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
1.188 www 1454: &escape($courselogs{$crsid}),
1455: $coursehombuf{$crsid}) eq 'ok') {
1.157 www 1456: delete $courselogs{$crsid};
1457: } else {
1458: &logthis('Failed to flush log buffer for '.$crsid);
1459: if (length($courselogs{$crsid})>40000) {
1460: &logthis("<font color=blue>WARNING: Buffer for ".$crsid.
1461: " exceeded maximum size, deleting.</font>");
1462: delete $courselogs{$crsid};
1463: }
1.352 www 1464: }
1465: if ($courseidbuffer{$coursehombuf{$crsid}}) {
1466: $courseidbuffer{$coursehombuf{$crsid}}.='&'.
1.516 raeburn 1467: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1468: '='.&escape($courseinstcodebuf{$crsid});
1.352 www 1469: } else {
1470: $courseidbuffer{$coursehombuf{$crsid}}=
1.516 raeburn 1471: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1472: '='.&escape($courseinstcodebuf{$crsid});
1.352 www 1473: }
1.191 harris41 1474: }
1.352 www 1475: #
1476: # Write course id database (reverse lookup) to homeserver of courses
1477: # Is used in pickcourse
1478: #
1479: foreach (keys %courseidbuffer) {
1.353 www 1480: &courseidput($hostdom{$_},$courseidbuffer{$_},$_);
1.352 www 1481: }
1482: #
1483: # File accesses
1484: # Writes to the dynamic metadata of resources to get hit counts, etc.
1485: #
1.449 matthew 1486: foreach my $entry (keys(%accesshash)) {
1.458 matthew 1487: if ($entry =~ /___count$/) {
1488: my ($dom,$name);
1489: ($dom,$name,undef)=($entry=~m:___(\w+)/(\w+)/(.*)___count$:);
1490: if (! defined($dom) || $dom eq '' ||
1491: ! defined($name) || $name eq '') {
1492: my $cid = $ENV{'request.course.id'};
1493: $dom = $ENV{'request.'.$cid.'.domain'};
1494: $name = $ENV{'request.'.$cid.'.num'};
1495: }
1.450 matthew 1496: my $value = $accesshash{$entry};
1497: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
1498: my %temphash=($url => $value);
1.449 matthew 1499: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
1500: if ($result eq 'ok') {
1501: delete $accesshash{$entry};
1502: } elsif ($result eq 'unknown_cmd') {
1503: # Target server has old code running on it.
1.450 matthew 1504: my %temphash=($entry => $value);
1.449 matthew 1505: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1506: delete $accesshash{$entry};
1507: }
1508: }
1509: } else {
1.458 matthew 1510: my ($dom,$name) = ($entry=~m:___(\w+)/(\w+)/(.*)___(\w+)$:);
1.450 matthew 1511: my %temphash=($entry => $accesshash{$entry});
1.449 matthew 1512: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1513: delete $accesshash{$entry};
1514: }
1.185 www 1515: }
1.191 harris41 1516: }
1.352 www 1517: #
1518: # Roles
1519: # Reverse lookup of user roles for course faculty/staff and co-authorship
1520: #
1.349 www 1521: foreach (keys %userrolehash) {
1522: my $entry=$_;
1.351 www 1523: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
1.349 www 1524: split(/\:/,$entry);
1525: if (&Apache::lonnet::put('nohist_userroles',
1.351 www 1526: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
1.349 www 1527: $rudom,$runame) eq 'ok') {
1528: delete $userrolehash{$entry};
1529: }
1530: }
1.186 www 1531: $dumpcount++;
1.157 www 1532: }
1533:
1534: sub courselog {
1535: my $what=shift;
1.158 www 1536: $what=time.':'.$what;
1.157 www 1537: unless ($ENV{'request.course.id'}) { return ''; }
1.188 www 1538: $coursedombuf{$ENV{'request.course.id'}}=
1.352 www 1539: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1540: $coursenumbuf{$ENV{'request.course.id'}}=
1.188 www 1541: $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1542: $coursehombuf{$ENV{'request.course.id'}}=
1543: $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.352 www 1544: $coursedescrbuf{$ENV{'request.course.id'}}=
1545: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.516 raeburn 1546: $courseinstcodebuf{$ENV{'request.course.id'}}=
1547: $ENV{'course.'.$ENV{'request.course.id'}.'.internal.coursecode'};
1.157 www 1548: if (defined $courselogs{$ENV{'request.course.id'}}) {
1549: $courselogs{$ENV{'request.course.id'}}.='&'.$what;
1550: } else {
1551: $courselogs{$ENV{'request.course.id'}}.=$what;
1552: }
1.458 matthew 1553: if (length($courselogs{$ENV{'request.course.id'}})>4048) {
1.157 www 1554: &flushcourselogs();
1555: }
1.158 www 1556: }
1557:
1558: sub courseacclog {
1559: my $fnsymb=shift;
1560: unless ($ENV{'request.course.id'}) { return ''; }
1561: my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.408 www 1562: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|page)$/) {
1.187 www 1563: $what.=':POST';
1.191 harris41 1564: foreach (keys %ENV) {
1.158 www 1565: if ($_=~/^form\.(.*)/) {
1566: $what.=':'.$1.'='.$ENV{$_};
1567: }
1.191 harris41 1568: }
1.158 www 1569: }
1570: &courselog($what);
1.149 www 1571: }
1572:
1.185 www 1573: sub countacc {
1574: my $url=&declutter(shift);
1.458 matthew 1575: return if (! defined($url) || $url eq '');
1.185 www 1576: unless ($ENV{'request.course.id'}) { return ''; }
1577: $accesshash{$ENV{'request.course.id'}.'___'.$url.'___course'}=1;
1.281 www 1578: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
1.450 matthew 1579: $accesshash{$key}++;
1.185 www 1580: }
1.349 www 1581:
1.361 www 1582: sub linklog {
1583: my ($from,$to)=@_;
1584: $from=&declutter($from);
1585: $to=&declutter($to);
1586: $accesshash{$from.'___'.$to.'___comefrom'}=1;
1587: $accesshash{$to.'___'.$from.'___goto'}=1;
1588: }
1589:
1.349 www 1590: sub userrolelog {
1591: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
1592: if (($trole=~/^ca/) || ($trole=~/^in/) ||
1593: ($trole=~/^cc/) || ($trole=~/^ep/) ||
1.469 www 1594: ($trole=~/^cr/) || ($trole=~/^ta/)) {
1.350 www 1595: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
1596: $userrolehash
1597: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
1.349 www 1598: =$tend.':'.$tstart;
1599: }
1.351 www 1600: }
1601:
1602: sub get_course_adv_roles {
1603: my $cid=shift;
1604: $cid=$ENV{'request.course.id'} unless (defined($cid));
1605: my %coursehash=&coursedescription($cid);
1.470 www 1606: my %nothide=();
1607: foreach (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
1608: $nothide{join(':',split(/[\@\:]/,$_))}=1;
1609: }
1.351 www 1610: my %returnhash=();
1611: my %dumphash=
1612: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
1613: my $now=time;
1614: foreach (keys %dumphash) {
1615: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1616: if (($tstart) && ($tstart<0)) { next; }
1617: if (($tend) && ($tend<$now)) { next; }
1618: if (($tstart) && ($now<$tstart)) { next; }
1619: my ($role,$username,$domain,$section)=split(/\:/,$_);
1.470 www 1620: if ((&privileged($username,$domain)) &&
1621: (!$nothide{$username.':'.$domain})) { next; }
1.351 www 1622: my $key=&plaintext($role);
1623: if ($section) { $key.=' (Sec/Grp '.$section.')'; }
1624: if ($returnhash{$key}) {
1625: $returnhash{$key}.=','.$username.':'.$domain;
1626: } else {
1627: $returnhash{$key}=$username.':'.$domain;
1628: }
1.400 www 1629: }
1630: return %returnhash;
1631: }
1632:
1633: sub get_my_roles {
1634: my ($uname,$udom)=@_;
1635: unless (defined($uname)) { $uname=$ENV{'user.name'}; }
1636: unless (defined($udom)) { $udom=$ENV{'user.domain'}; }
1637: my %dumphash=
1638: &dump('nohist_userroles',$udom,$uname);
1639: my %returnhash=();
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,$section)=split(/\:/,$_);
1647: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
1.373 www 1648: }
1649: return %returnhash;
1.399 www 1650: }
1651:
1652: # ----------------------------------------------------- Frontpage Announcements
1653: #
1654: #
1655:
1656: sub postannounce {
1657: my ($server,$text)=@_;
1658: unless (&allowed('psa',$hostdom{$server})) { return 'refused'; }
1659: unless ($text=~/\w/) { $text=''; }
1660: return &reply('setannounce:'.&escape($text),$server);
1661: }
1662:
1663: sub getannounce {
1.448 albertel 1664:
1665: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
1.399 www 1666: my $announcement='';
1667: while (<$fh>) { $announcement .=$_; }
1.448 albertel 1668: close($fh);
1.399 www 1669: if ($announcement=~/\w/) {
1670: return
1671: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
1.518 albertel 1672: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
1.399 www 1673: } else {
1674: return '';
1675: }
1676: } else {
1677: return '';
1678: }
1.351 www 1679: }
1.353 www 1680:
1681: # ---------------------------------------------------------- Course ID routines
1682: # Deal with domain's nohist_courseid.db files
1683: #
1684:
1685: sub courseidput {
1686: my ($domain,$what,$coursehome)=@_;
1687: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
1688: }
1689:
1690: sub courseiddump {
1.511 raeburn 1691: my ($domfilter,$descfilter,$sincefilter,$hostidflag,$hostidref)=@_;
1.353 www 1692: my %returnhash=();
1.355 www 1693: unless ($domfilter) { $domfilter=''; }
1.353 www 1694: foreach my $tryserver (keys %libserv) {
1.511 raeburn 1695: if ( ($hostidflag == 1 && grep/^$tryserver$/,@{$hostidref}) || (!defined($hostidflag)) ) {
1.506 raeburn 1696: if ((!$domfilter) || ($hostdom{$tryserver} eq $domfilter)) {
1697: foreach (
1698: split(/\&/,&reply('courseiddump:'.$hostdom{$tryserver}.':'.
1.354 www 1699: $sincefilter.':'.&escape($descfilter),
1700: $tryserver))) {
1.506 raeburn 1701: my ($key,$value)=split(/\=/,$_);
1702: if (($key) && ($value)) {
1.516 raeburn 1703: $returnhash{&unescape($key)}=$value;
1.506 raeburn 1704: }
1.353 www 1705: }
1706: }
1707: }
1708: }
1709: return %returnhash;
1710: }
1711:
1712: #
1.149 www 1713: # ----------------------------------------------------------- Check out an item
1714:
1.504 albertel 1715: sub get_first_access {
1716: my ($type,$argsymb)=@_;
1717: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1718: if ($argsymb) { $symb=$argsymb; }
1719: my ($map,$id,$res)=&decode_symb($symb);
1720: if ($type eq 'map') { $res=$map; }
1721: my %times=&get('firstaccesstimes',[$res],$udom,$uname);
1722: return $times{$res};
1723: }
1724:
1725: sub set_first_access {
1726: my ($type)=@_;
1727: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1728: my ($map,$id,$res)=&decode_symb($symb);
1729: if ($type eq 'map') { $res=$map; }
1.505 albertel 1730: my $firstaccess=&get_first_access($type);
1731: if (!$firstaccess) {
1732: return &put('firstaccesstimes',{$res=>time},$udom,$uname);
1733: }
1734: return 'already_set';
1.504 albertel 1735: }
1736:
1.149 www 1737: sub checkout {
1738: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1739: my $now=time;
1740: my $lonhost=$perlvar{'lonHostID'};
1741: my $infostr=&escape(
1.234 www 1742: 'CHECKOUTTOKEN&'.
1.149 www 1743: $tuname.'&'.
1744: $tudom.'&'.
1745: $tcrsid.'&'.
1746: $symb.'&'.
1747: $now.'&'.$ENV{'REMOTE_ADDR'});
1748: my $token=&reply('tmpput:'.$infostr,$lonhost);
1.151 www 1749: if ($token=~/^error\:/) {
1750: &logthis("<font color=blue>WARNING: ".
1751: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
1752: "</font>");
1753: return '';
1754: }
1755:
1.149 www 1756: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
1757: $token=~tr/a-z/A-Z/;
1758:
1.153 www 1759: my %infohash=('resource.0.outtoken' => $token,
1760: 'resource.0.checkouttime' => $now,
1761: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
1.149 www 1762:
1763: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1764: return '';
1.151 www 1765: } else {
1766: &logthis("<font color=blue>WARNING: ".
1767: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
1768: "</font>");
1.149 www 1769: }
1770:
1771: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1772: &escape('Checkout '.$infostr.' - '.
1773: $token)) ne 'ok') {
1774: return '';
1.151 www 1775: } else {
1776: &logthis("<font color=blue>WARNING: ".
1777: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
1778: "</font>");
1.149 www 1779: }
1.151 www 1780: return $token;
1.149 www 1781: }
1782:
1783: # ------------------------------------------------------------ Check in an item
1784:
1785: sub checkin {
1786: my $token=shift;
1.150 www 1787: my $now=time;
1788: my ($ta,$tb,$lonhost)=split(/\*/,$token);
1789: $lonhost=~tr/A-Z/a-z/;
1790: my $dtoken=$ta.'_'.$hostip{$lonhost}.'_'.$tb;
1791: $dtoken=~s/\W/\_/g;
1.234 www 1792: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
1.150 www 1793: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
1794:
1.154 www 1795: unless (($tuname) && ($tudom)) {
1796: &logthis('Check in '.$token.' ('.$dtoken.') failed');
1797: return '';
1798: }
1799:
1800: unless (&allowed('mgr',$tcrsid)) {
1801: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
1802: $ENV{'user.name'}.' - '.$ENV{'user.domain'});
1803: return '';
1804: }
1805:
1.153 www 1806: my %infohash=('resource.0.intoken' => $token,
1807: 'resource.0.checkintime' => $now,
1808: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
1.150 www 1809:
1810: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1811: return '';
1812: }
1813:
1814: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1815: &escape('Checkin - '.$token)) ne 'ok') {
1816: return '';
1817: }
1818:
1819: return ($symb,$tuname,$tudom,$tcrsid);
1.110 www 1820: }
1821:
1822: # --------------------------------------------- Set Expire Date for Spreadsheet
1823:
1824: sub expirespread {
1825: my ($uname,$udom,$stype,$usymb)=@_;
1826: my $cid=$ENV{'request.course.id'};
1827: if ($cid) {
1828: my $now=time;
1829: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
1830: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1831: $ENV{'course.'.$cid.'.num'}.
1832: ':nohist_expirationdates:'.
1833: &escape($key).'='.$now,
1834: $ENV{'course.'.$cid.'.home'})
1835: }
1836: return 'ok';
1.14 www 1837: }
1838:
1.109 www 1839: # ----------------------------------------------------- Devalidate Spreadsheets
1840:
1841: sub devalidate {
1.325 www 1842: my ($symb,$uname,$udom)=@_;
1.109 www 1843: my $cid=$ENV{'request.course.id'};
1844: if ($cid) {
1.391 matthew 1845: # delete the stored spreadsheets for
1846: # - the student level sheet of this user in course's homespace
1847: # - the assessment level sheet for this resource
1848: # for this user in user's homespace
1.325 www 1849: my $key=$uname.':'.$udom.':';
1.109 www 1850: my $status=
1.299 matthew 1851: &del('nohist_calculatedsheets',
1.391 matthew 1852: [$key.'studentcalc:'],
1.133 albertel 1853: $ENV{'course.'.$cid.'.domain'},
1854: $ENV{'course.'.$cid.'.num'})
1855: .' '.
1856: &del('nohist_calculatedsheets_'.$cid,
1.391 matthew 1857: [$key.'assesscalc:'.$symb],$udom,$uname);
1.109 www 1858: unless ($status eq 'ok ok') {
1859: &logthis('Could not devalidate spreadsheet '.
1.325 www 1860: $uname.' at '.$udom.' for '.
1.109 www 1861: $symb.': '.$status);
1.133 albertel 1862: }
1.109 www 1863: }
1864: }
1865:
1.265 albertel 1866: sub get_scalar {
1867: my ($string,$end) = @_;
1868: my $value;
1869: if ($$string =~ s/^([^&]*?)($end)/$2/) {
1870: $value = $1;
1871: } elsif ($$string =~ s/^([^&]*?)&//) {
1872: $value = $1;
1873: }
1874: return &unescape($value);
1875: }
1876:
1877: sub array2str {
1878: my (@array) = @_;
1879: my $result=&arrayref2str(\@array);
1880: $result=~s/^__ARRAY_REF__//;
1881: $result=~s/__END_ARRAY_REF__$//;
1882: return $result;
1883: }
1884:
1.204 albertel 1885: sub arrayref2str {
1886: my ($arrayref) = @_;
1.265 albertel 1887: my $result='__ARRAY_REF__';
1.204 albertel 1888: foreach my $elem (@$arrayref) {
1.265 albertel 1889: if(ref($elem) eq 'ARRAY') {
1890: $result.=&arrayref2str($elem).'&';
1891: } elsif(ref($elem) eq 'HASH') {
1892: $result.=&hashref2str($elem).'&';
1893: } elsif(ref($elem)) {
1894: #print("Got a ref of ".(ref($elem))." skipping.");
1.204 albertel 1895: } else {
1896: $result.=&escape($elem).'&';
1897: }
1898: }
1899: $result=~s/\&$//;
1.265 albertel 1900: $result .= '__END_ARRAY_REF__';
1.204 albertel 1901: return $result;
1902: }
1903:
1.168 albertel 1904: sub hash2str {
1.204 albertel 1905: my (%hash) = @_;
1906: my $result=&hashref2str(\%hash);
1.265 albertel 1907: $result=~s/^__HASH_REF__//;
1908: $result=~s/__END_HASH_REF__$//;
1.204 albertel 1909: return $result;
1910: }
1911:
1912: sub hashref2str {
1913: my ($hashref)=@_;
1.265 albertel 1914: my $result='__HASH_REF__';
1.495 albertel 1915: foreach (sort(keys(%$hashref))) {
1.204 albertel 1916: if (ref($_) eq 'ARRAY') {
1.265 albertel 1917: $result.=&arrayref2str($_).'=';
1.204 albertel 1918: } elsif (ref($_) eq 'HASH') {
1.265 albertel 1919: $result.=&hashref2str($_).'=';
1.204 albertel 1920: } elsif (ref($_)) {
1.265 albertel 1921: $result.='=';
1922: #print("Got a ref of ".(ref($_))." skipping.");
1.204 albertel 1923: } else {
1.265 albertel 1924: if ($_) {$result.=&escape($_).'=';} else { last; }
1.204 albertel 1925: }
1926:
1.265 albertel 1927: if(ref($hashref->{$_}) eq 'ARRAY') {
1928: $result.=&arrayref2str($hashref->{$_}).'&';
1929: } elsif(ref($hashref->{$_}) eq 'HASH') {
1930: $result.=&hashref2str($hashref->{$_}).'&';
1931: } elsif(ref($hashref->{$_})) {
1932: $result.='&';
1933: #print("Got a ref of ".(ref($hashref->{$_}))." skipping.");
1.204 albertel 1934: } else {
1.265 albertel 1935: $result.=&escape($hashref->{$_}).'&';
1.204 albertel 1936: }
1937: }
1.168 albertel 1938: $result=~s/\&$//;
1.265 albertel 1939: $result .= '__END_HASH_REF__';
1.168 albertel 1940: return $result;
1941: }
1942:
1943: sub str2hash {
1.265 albertel 1944: my ($string)=@_;
1945: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
1946: return %$hash;
1947: }
1948:
1949: sub str2hashref {
1.168 albertel 1950: my ($string) = @_;
1.265 albertel 1951:
1952: my %hash;
1953:
1954: if($string !~ /^__HASH_REF__/) {
1955: if (! ($string eq '' || !defined($string))) {
1956: $hash{'error'}='Not hash reference';
1957: }
1958: return (\%hash, $string);
1959: }
1960:
1961: $string =~ s/^__HASH_REF__//;
1962:
1963: while($string !~ /^__END_HASH_REF__/) {
1964: #key
1965: my $key='';
1966: if($string =~ /^__HASH_REF__/) {
1967: ($key, $string)=&str2hashref($string);
1968: if(defined($key->{'error'})) {
1969: $hash{'error'}='Bad data';
1970: return (\%hash, $string);
1971: }
1972: } elsif($string =~ /^__ARRAY_REF__/) {
1973: ($key, $string)=&str2arrayref($string);
1974: if($key->[0] eq 'Array reference error') {
1975: $hash{'error'}='Bad data';
1976: return (\%hash, $string);
1977: }
1978: } else {
1979: $string =~ s/^(.*?)=//;
1.267 albertel 1980: $key=&unescape($1);
1.265 albertel 1981: }
1982: $string =~ s/^=//;
1983:
1984: #value
1985: my $value='';
1986: if($string =~ /^__HASH_REF__/) {
1987: ($value, $string)=&str2hashref($string);
1988: if(defined($value->{'error'})) {
1989: $hash{'error'}='Bad data';
1990: return (\%hash, $string);
1991: }
1992: } elsif($string =~ /^__ARRAY_REF__/) {
1993: ($value, $string)=&str2arrayref($string);
1994: if($value->[0] eq 'Array reference error') {
1995: $hash{'error'}='Bad data';
1996: return (\%hash, $string);
1997: }
1998: } else {
1999: $value=&get_scalar(\$string,'__END_HASH_REF__');
2000: }
2001: $string =~ s/^&//;
2002:
2003: $hash{$key}=$value;
1.204 albertel 2004: }
1.265 albertel 2005:
2006: $string =~ s/^__END_HASH_REF__//;
2007:
2008: return (\%hash, $string);
1.204 albertel 2009: }
2010:
2011: sub str2array {
1.265 albertel 2012: my ($string)=@_;
2013: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
2014: return @$array;
2015: }
2016:
2017: sub str2arrayref {
1.204 albertel 2018: my ($string) = @_;
1.265 albertel 2019: my @array;
2020:
2021: if($string !~ /^__ARRAY_REF__/) {
2022: if (! ($string eq '' || !defined($string))) {
2023: $array[0]='Array reference error';
2024: }
2025: return (\@array, $string);
2026: }
2027:
2028: $string =~ s/^__ARRAY_REF__//;
2029:
2030: while($string !~ /^__END_ARRAY_REF__/) {
2031: my $value='';
2032: if($string =~ /^__HASH_REF__/) {
2033: ($value, $string)=&str2hashref($string);
2034: if(defined($value->{'error'})) {
2035: $array[0] ='Array reference error';
2036: return (\@array, $string);
2037: }
2038: } elsif($string =~ /^__ARRAY_REF__/) {
2039: ($value, $string)=&str2arrayref($string);
2040: if($value->[0] eq 'Array reference error') {
2041: $array[0] ='Array reference error';
2042: return (\@array, $string);
2043: }
2044: } else {
2045: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
2046: }
2047: $string =~ s/^&//;
2048:
2049: push(@array, $value);
1.191 harris41 2050: }
1.265 albertel 2051:
2052: $string =~ s/^__END_ARRAY_REF__//;
2053:
2054: return (\@array, $string);
1.168 albertel 2055: }
2056:
1.167 albertel 2057: # -------------------------------------------------------------------Temp Store
2058:
1.168 albertel 2059: sub tmpreset {
2060: my ($symb,$namespace,$domain,$stuname) = @_;
2061: if (!$symb) {
2062: $symb=&symbread();
1.380 albertel 2063: if (!$symb) { $symb= $ENV{'request.url'}; }
1.168 albertel 2064: }
2065: $symb=escape($symb);
2066:
2067: if (!$namespace) { $namespace=$ENV{'request.state'}; }
2068: $namespace=~s/\//\_/g;
2069: $namespace=~s/\W//g;
2070:
2071: #FIXME needs to do something for /pub resources
2072: if (!$domain) { $domain=$ENV{'user.domain'}; }
2073: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2074: my $path=$perlvar{'lonDaemons'}.'/tmp';
2075: my %hash;
2076: if (tie(%hash,'GDBM_File',
2077: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2078: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2079: foreach my $key (keys %hash) {
1.180 albertel 2080: if ($key=~ /:$symb/) {
1.168 albertel 2081: delete($hash{$key});
2082: }
2083: }
2084: }
2085: }
2086:
1.167 albertel 2087: sub tmpstore {
1.168 albertel 2088: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2089:
2090: if (!$symb) {
2091: $symb=&symbread();
2092: if (!$symb) { $symb= $ENV{'request.url'}; }
2093: }
2094: $symb=escape($symb);
2095:
2096: if (!$namespace) {
2097: # I don't think we would ever want to store this for a course.
2098: # it seems this will only be used if we don't have a course.
2099: #$namespace=$ENV{'request.course.id'};
2100: #if (!$namespace) {
2101: $namespace=$ENV{'request.state'};
2102: #}
2103: }
2104: $namespace=~s/\//\_/g;
2105: $namespace=~s/\W//g;
2106: #FIXME needs to do something for /pub resources
2107: if (!$domain) { $domain=$ENV{'user.domain'}; }
2108: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2109: my $now=time;
2110: my %hash;
2111: my $path=$perlvar{'lonDaemons'}.'/tmp';
2112: if (tie(%hash,'GDBM_File',
2113: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2114: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2115: $hash{"version:$symb"}++;
2116: my $version=$hash{"version:$symb"};
2117: my $allkeys='';
2118: foreach my $key (keys(%$storehash)) {
2119: $allkeys.=$key.':';
2120: $hash{"$version:$symb:$key"}=$$storehash{$key};
2121: }
2122: $hash{"$version:$symb:timestamp"}=$now;
2123: $allkeys.='timestamp';
2124: $hash{"$version:keys:$symb"}=$allkeys;
2125: if (untie(%hash)) {
2126: return 'ok';
2127: } else {
2128: return "error:$!";
2129: }
2130: } else {
2131: return "error:$!";
2132: }
2133: }
1.167 albertel 2134:
1.168 albertel 2135: # -----------------------------------------------------------------Temp Restore
1.167 albertel 2136:
1.168 albertel 2137: sub tmprestore {
2138: my ($symb,$namespace,$domain,$stuname) = @_;
1.167 albertel 2139:
1.168 albertel 2140: if (!$symb) {
2141: $symb=&symbread();
2142: if (!$symb) { $symb= $ENV{'request.url'}; }
2143: }
2144: $symb=escape($symb);
2145:
2146: if (!$namespace) { $namespace=$ENV{'request.state'}; }
2147: #FIXME needs to do something for /pub resources
2148: if (!$domain) { $domain=$ENV{'user.domain'}; }
2149: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2150:
2151: my %returnhash;
2152: $namespace=~s/\//\_/g;
2153: $namespace=~s/\W//g;
2154: my %hash;
2155: my $path=$perlvar{'lonDaemons'}.'/tmp';
2156: if (tie(%hash,'GDBM_File',
2157: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2158: &GDBM_READER(),0640)) {
1.168 albertel 2159: my $version=$hash{"version:$symb"};
2160: $returnhash{'version'}=$version;
2161: my $scope;
2162: for ($scope=1;$scope<=$version;$scope++) {
2163: my $vkeys=$hash{"$scope:keys:$symb"};
2164: my @keys=split(/:/,$vkeys);
2165: my $key;
2166: $returnhash{"$scope:keys"}=$vkeys;
2167: foreach $key (@keys) {
2168: $returnhash{"$scope:$key"}=$hash{"$scope:$symb:$key"};
2169: $returnhash{"$key"}=$hash{"$scope:$symb:$key"};
1.167 albertel 2170: }
2171: }
1.168 albertel 2172: if (!(untie(%hash))) {
2173: return "error:$!";
2174: }
2175: } else {
2176: return "error:$!";
2177: }
2178: return %returnhash;
1.167 albertel 2179: }
2180:
1.9 www 2181: # ----------------------------------------------------------------------- Store
2182:
2183: sub store {
1.124 www 2184: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2185: my $home='';
2186:
1.168 albertel 2187: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2188:
1.213 www 2189: $symb=&symbclean($symb);
1.122 albertel 2190: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2191:
1.325 www 2192: if (!$domain) { $domain=$ENV{'user.domain'}; }
2193: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2194:
2195: &devalidate($symb,$stuname,$domain);
1.109 www 2196:
2197: $symb=escape($symb);
1.187 www 2198: if (!$namespace) {
2199: unless ($namespace=$ENV{'request.course.id'}) {
2200: return '';
2201: }
2202: }
1.122 albertel 2203: if (!$home) { $home=$ENV{'user.home'}; }
1.447 www 2204:
2205: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2206: $$storehash{'host'}=$perlvar{'lonHostID'};
2207:
1.12 www 2208: my $namevalue='';
1.191 harris41 2209: foreach (keys %$storehash) {
1.122 albertel 2210: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 2211: }
1.12 www 2212: $namevalue=~s/\&$//;
1.187 www 2213: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
1.124 www 2214: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.9 www 2215: }
2216:
1.47 www 2217: # -------------------------------------------------------------- Critical Store
2218:
2219: sub cstore {
1.124 www 2220: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2221: my $home='';
2222:
1.168 albertel 2223: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2224:
1.213 www 2225: $symb=&symbclean($symb);
1.122 albertel 2226: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2227:
1.325 www 2228: if (!$domain) { $domain=$ENV{'user.domain'}; }
2229: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2230:
2231: &devalidate($symb,$stuname,$domain);
1.109 www 2232:
2233: $symb=escape($symb);
1.187 www 2234: if (!$namespace) {
2235: unless ($namespace=$ENV{'request.course.id'}) {
2236: return '';
2237: }
2238: }
1.122 albertel 2239: if (!$home) { $home=$ENV{'user.home'}; }
1.447 www 2240:
2241: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2242: $$storehash{'host'}=$perlvar{'lonHostID'};
1.122 albertel 2243:
1.47 www 2244: my $namevalue='';
1.191 harris41 2245: foreach (keys %$storehash) {
1.122 albertel 2246: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 2247: }
1.47 www 2248: $namevalue=~s/\&$//;
1.187 www 2249: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
1.188 www 2250: return critical
2251: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.47 www 2252: }
2253:
1.9 www 2254: # --------------------------------------------------------------------- Restore
2255:
2256: sub restore {
1.124 www 2257: my ($symb,$namespace,$domain,$stuname) = @_;
2258: my $home='';
2259:
1.168 albertel 2260: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2261:
1.122 albertel 2262: if (!$symb) {
2263: unless ($symb=escape(&symbread())) { return ''; }
2264: } else {
1.213 www 2265: $symb=&escape(&symbclean($symb));
1.122 albertel 2266: }
1.188 www 2267: if (!$namespace) {
2268: unless ($namespace=$ENV{'request.course.id'}) {
2269: return '';
2270: }
2271: }
1.122 albertel 2272: if (!$domain) { $domain=$ENV{'user.domain'}; }
2273: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2274: if (!$home) { $home=$ENV{'user.home'}; }
2275: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
2276:
1.12 www 2277: my %returnhash=();
1.191 harris41 2278: foreach (split(/\&/,$answer)) {
1.12 www 2279: my ($name,$value)=split(/\=/,$_);
2280: $returnhash{&unescape($name)}=&unescape($value);
1.191 harris41 2281: }
1.75 www 2282: my $version;
2283: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.191 harris41 2284: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1.75 www 2285: $returnhash{$_}=$returnhash{$version.':'.$_};
1.191 harris41 2286: }
1.75 www 2287: }
1.13 www 2288: return %returnhash;
1.34 www 2289: }
2290:
2291: # ---------------------------------------------------------- Course Description
2292:
2293: sub coursedescription {
2294: my $courseid=shift;
2295: $courseid=~s/^\///;
1.49 www 2296: $courseid=~s/\_/\//g;
1.34 www 2297: my ($cdomain,$cnum)=split(/\//,$courseid);
1.129 albertel 2298: my $chome=&homeserver($cnum,$cdomain);
1.302 albertel 2299: my $normalid=$cdomain.'_'.$cnum;
2300: # need to always cache even if we get errors otherwise we keep
2301: # trying and trying and trying to get the course description.
2302: my %envhash=();
2303: my %returnhash=();
2304: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.34 www 2305: if ($chome ne 'no_host') {
1.302 albertel 2306: %returnhash=&dump('environment',$cdomain,$cnum);
1.129 albertel 2307: if (!exists($returnhash{'con_lost'})) {
2308: $returnhash{'home'}= $chome;
2309: $returnhash{'domain'} = $cdomain;
2310: $returnhash{'num'} = $cnum;
1.130 albertel 2311: while (my ($name,$value) = each %returnhash) {
1.53 www 2312: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.129 albertel 2313: }
1.270 www 2314: $returnhash{'url'}=&clutter($returnhash{'url'});
1.34 www 2315: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 2316: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.60 www 2317: $envhash{'course.'.$normalid.'.home'}=$chome;
2318: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
2319: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.34 www 2320: }
2321: }
1.302 albertel 2322: &appenv(%envhash);
2323: return %returnhash;
1.461 www 2324: }
2325:
2326: # -------------------------------------------------See if a user is privileged
2327:
2328: sub privileged {
2329: my ($username,$domain)=@_;
2330: my $rolesdump=&reply("dump:$domain:$username:roles",
2331: &homeserver($username,$domain));
2332: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
2333: my $now=time;
2334: if ($rolesdump ne '') {
2335: foreach (split(/&/,$rolesdump)) {
2336: if ($_!~/^rolesdef\&/) {
2337: my ($area,$role)=split(/=/,$_);
2338: $area=~s/\_\w\w$//;
2339: my ($trole,$tend,$tstart)=split(/_/,$role);
2340: if (($trole eq 'dc') || ($trole eq 'su')) {
2341: my $active=1;
2342: if ($tend) {
2343: if ($tend<$now) { $active=0; }
2344: }
2345: if ($tstart) {
2346: if ($tstart>$now) { $active=0; }
2347: }
2348: if ($active) { return 1; }
2349: }
2350: }
2351: }
2352: }
2353: return 0;
1.9 www 2354: }
1.1 albertel 2355:
1.103 harris41 2356: # -------------------------------------------------------- Get user privileges
1.11 www 2357:
2358: sub rolesinit {
2359: my ($domain,$username,$authhost)=@_;
2360: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 2361: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 2362: my %allroles=();
2363: my %thesepriv=();
2364: my $now=time;
1.21 www 2365: my $userroles="user.login.time=$now\n";
1.11 www 2366: my $thesestr;
2367:
2368: if ($rolesdump ne '') {
1.191 harris41 2369: foreach (split(/&/,$rolesdump)) {
1.21 www 2370: if ($_!~/^rolesdef\&/) {
1.11 www 2371: my ($area,$role)=split(/=/,$_);
1.21 www 2372: $area=~s/\_\w\w$//;
1.11 www 2373: my ($trole,$tend,$tstart)=split(/_/,$role);
1.21 www 2374: $userroles.='user.role.'.$trole.'.'.$area.'='.
2375: $tstart.'.'.$tend."\n";
1.349 www 2376: # log the associated role with the area
2377: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
1.11 www 2378: if ($tend!=0) {
2379: if ($tend<$now) {
2380: $trole='';
2381: }
2382: }
2383: if ($tstart!=0) {
2384: if ($tstart>$now) {
2385: $trole='';
2386: }
2387: }
2388: if (($area ne '') && ($trole ne '')) {
1.347 albertel 2389: my $spec=$trole.'.'.$area;
2390: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
2391: if ($trole =~ /^cr\//) {
2392: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
1.392 www 2393: my $homsvr=homeserver($rauthor,$rdomain);
1.347 albertel 2394: if ($hostname{$homsvr} ne '') {
1.392 www 2395: my ($rdummy,$roledef)=
2396: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
2397:
2398: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
1.347 albertel 2399: my ($syspriv,$dompriv,$coursepriv)=
1.392 www 2400: split(/\_/,$roledef);
1.347 albertel 2401: if (defined($syspriv)) {
2402: $allroles{'cm./'}.=':'.$syspriv;
2403: $allroles{$spec.'./'}.=':'.$syspriv;
2404: }
2405: if ($tdomain ne '') {
2406: if (defined($dompriv)) {
2407: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
2408: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
2409: }
2410: if ($trest ne '') {
2411: if (defined($coursepriv)) {
2412: $allroles{'cm.'.$area}.=':'.$coursepriv;
2413: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
2414: }
2415: }
2416: }
2417: }
2418: }
2419: } else {
2420: if (defined($pr{$trole.':s'})) {
2421: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
2422: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
2423: }
2424: if ($tdomain ne '') {
2425: if (defined($pr{$trole.':d'})) {
2426: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2427: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2428: }
2429: if ($trest ne '') {
2430: if (defined($pr{$trole.':c'})) {
2431: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
2432: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
2433: }
2434: }
2435: }
2436: }
1.12 www 2437: }
2438: }
1.191 harris41 2439: }
1.125 www 2440: my $adv=0;
1.128 www 2441: my $author=0;
1.191 harris41 2442: foreach (keys %allroles) {
1.11 www 2443: %thesepriv=();
1.146 www 2444: if (($_!~/^st/) && ($_!~/^ta/) && ($_!~/^cm/)) { $adv=1; }
1.128 www 2445: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
1.191 harris41 2446: foreach (split(/:/,$allroles{$_})) {
1.11 www 2447: if ($_ ne '') {
1.103 harris41 2448: my ($privilege,$restrictions)=split(/&/,$_);
1.11 www 2449: if ($restrictions eq '') {
1.103 harris41 2450: $thesepriv{$privilege}='F';
1.11 www 2451: } else {
1.103 harris41 2452: if ($thesepriv{$privilege} ne 'F') {
2453: $thesepriv{$privilege}.=$restrictions;
1.11 www 2454: }
2455: }
2456: }
1.191 harris41 2457: }
1.11 www 2458: $thesestr='';
1.191 harris41 2459: foreach (keys %thesepriv) { $thesestr.=':'.$_.'&'.$thesepriv{$_}; }
1.11 www 2460: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
1.191 harris41 2461: }
1.128 www 2462: $userroles.='user.adv='.$adv."\n".
2463: 'user.author='.$author."\n";
1.126 www 2464: $ENV{'user.adv'}=$adv;
1.11 www 2465: }
2466: return $userroles;
2467: }
2468:
1.12 www 2469: # --------------------------------------------------------------- get interface
2470:
2471: sub get {
1.131 albertel 2472: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2473: my $items='';
1.191 harris41 2474: foreach (@$storearr) {
1.12 www 2475: $items.=escape($_).'&';
1.191 harris41 2476: }
1.12 www 2477: $items=~s/\&$//;
1.131 albertel 2478: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2479: if (!$uname) { $uname=$ENV{'user.name'}; }
2480: my $uhome=&homeserver($uname,$udomain);
2481:
1.133 albertel 2482: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2483: my @pairs=split(/\&/,$rep);
1.273 albertel 2484: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2485: return @pairs;
2486: }
1.15 www 2487: my %returnhash=();
1.42 www 2488: my $i=0;
1.191 harris41 2489: foreach (@$storearr) {
1.42 www 2490: $returnhash{$_}=unescape($pairs[$i]);
2491: $i++;
1.191 harris41 2492: }
1.15 www 2493: return %returnhash;
1.27 www 2494: }
2495:
2496: # --------------------------------------------------------------- del interface
2497:
2498: sub del {
1.133 albertel 2499: my ($namespace,$storearr,$udomain,$uname)=@_;
1.27 www 2500: my $items='';
1.191 harris41 2501: foreach (@$storearr) {
1.27 www 2502: $items.=escape($_).'&';
1.191 harris41 2503: }
1.27 www 2504: $items=~s/\&$//;
1.133 albertel 2505: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2506: if (!$uname) { $uname=$ENV{'user.name'}; }
2507: my $uhome=&homeserver($uname,$udomain);
2508:
2509: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2510: }
2511:
2512: # -------------------------------------------------------------- dump interface
2513:
2514: sub dump {
1.193 www 2515: my ($namespace,$udomain,$uname,$regexp)=@_;
1.129 albertel 2516: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2517: if (!$uname) { $uname=$ENV{'user.name'}; }
2518: my $uhome=&homeserver($uname,$udomain);
1.193 www 2519: if ($regexp) {
2520: $regexp=&escape($regexp);
2521: } else {
2522: $regexp='.';
2523: }
2524: my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
1.12 www 2525: my @pairs=split(/\&/,$rep);
2526: my %returnhash=();
1.191 harris41 2527: foreach (@pairs) {
1.12 www 2528: my ($key,$value)=split(/=/,$_);
1.29 www 2529: $returnhash{unescape($key)}=unescape($value);
1.318 matthew 2530: }
2531: return %returnhash;
1.407 www 2532: }
2533:
2534: # -------------------------------------------------------------- keys interface
2535:
2536: sub getkeys {
2537: my ($namespace,$udomain,$uname)=@_;
2538: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2539: if (!$uname) { $uname=$ENV{'user.name'}; }
2540: my $uhome=&homeserver($uname,$udomain);
2541: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
2542: my @keyarray=();
2543: foreach (split(/\&/,$rep)) {
2544: push (@keyarray,&unescape($_));
2545: }
2546: return @keyarray;
1.318 matthew 2547: }
2548:
1.319 matthew 2549: # --------------------------------------------------------------- currentdump
2550: sub currentdump {
1.328 matthew 2551: my ($courseid,$sdom,$sname)=@_;
1.326 matthew 2552: $courseid = $ENV{'request.course.id'} if (! defined($courseid));
2553: $sdom = $ENV{'user.domain'} if (! defined($sdom));
2554: $sname = $ENV{'user.name'} if (! defined($sname));
2555: my $uhome = &homeserver($sname,$sdom);
2556: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
1.318 matthew 2557: return if ($rep =~ /^(error:|no_such_host)/);
1.319 matthew 2558: #
1.318 matthew 2559: my %returnhash=();
1.319 matthew 2560: #
2561: if ($rep eq "unknown_cmd") {
2562: # an old lond will not know currentdump
2563: # Do a dump and make it look like a currentdump
1.326 matthew 2564: my @tmp = &dump($courseid,$sdom,$sname,'.');
1.319 matthew 2565: return if ($tmp[0] =~ /^(error:|no_such_host)/);
2566: my %hash = @tmp;
2567: @tmp=();
1.424 matthew 2568: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
1.319 matthew 2569: } else {
2570: my @pairs=split(/\&/,$rep);
2571: foreach (@pairs) {
2572: my ($key,$value)=split(/=/,$_);
2573: my ($symb,$param) = split(/:/,$key);
2574: $returnhash{&unescape($symb)}->{&unescape($param)} =
2575: &unescape($value);
2576: }
1.191 harris41 2577: }
1.12 www 2578: return %returnhash;
1.424 matthew 2579: }
2580:
2581: sub convert_dump_to_currentdump{
2582: my %hash = %{shift()};
2583: my %returnhash;
2584: # Code ripped from lond, essentially. The only difference
2585: # here is the unescaping done by lonnet::dump(). Conceivably
2586: # we might run in to problems with parameter names =~ /^v\./
2587: while (my ($key,$value) = each(%hash)) {
2588: my ($v,$symb,$param) = split(/:/,$key);
2589: next if ($v eq 'version' || $symb eq 'keys');
2590: next if (exists($returnhash{$symb}) &&
2591: exists($returnhash{$symb}->{$param}) &&
2592: $returnhash{$symb}->{'v.'.$param} > $v);
2593: $returnhash{$symb}->{$param}=$value;
2594: $returnhash{$symb}->{'v.'.$param}=$v;
2595: }
2596: #
2597: # Remove all of the keys in the hashes which keep track of
2598: # the version of the parameter.
2599: while (my ($symb,$param_hash) = each(%returnhash)) {
2600: # use a foreach because we are going to delete from the hash.
2601: foreach my $key (keys(%$param_hash)) {
2602: delete($param_hash->{$key}) if ($key =~ /^v\./);
2603: }
2604: }
2605: return \%returnhash;
1.12 www 2606: }
2607:
1.449 matthew 2608: # --------------------------------------------------------------- inc interface
2609:
2610: sub inc {
2611: my ($namespace,$store,$udomain,$uname) = @_;
2612: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2613: if (!$uname) { $uname=$ENV{'user.name'}; }
2614: my $uhome=&homeserver($uname,$udomain);
2615: my $items='';
2616: if (! ref($store)) {
2617: # got a single value, so use that instead
2618: $items = &escape($store).'=&';
2619: } elsif (ref($store) eq 'SCALAR') {
2620: $items = &escape($$store).'=&';
2621: } elsif (ref($store) eq 'ARRAY') {
2622: $items = join('=&',map {&escape($_);} @{$store});
2623: } elsif (ref($store) eq 'HASH') {
2624: while (my($key,$value) = each(%{$store})) {
2625: $items.= &escape($key).'='.&escape($value).'&';
2626: }
2627: }
2628: $items=~s/\&$//;
2629: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
2630: }
2631:
1.12 www 2632: # --------------------------------------------------------------- put interface
2633:
2634: sub put {
1.134 albertel 2635: my ($namespace,$storehash,$udomain,$uname)=@_;
2636: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2637: if (!$uname) { $uname=$ENV{'user.name'}; }
2638: my $uhome=&homeserver($uname,$udomain);
1.12 www 2639: my $items='';
1.191 harris41 2640: foreach (keys %$storehash) {
1.134 albertel 2641: $items.=&escape($_).'='.&escape($$storehash{$_}).'&';
1.191 harris41 2642: }
1.12 www 2643: $items=~s/\&$//;
1.134 albertel 2644: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1.47 www 2645: }
2646:
2647: # ------------------------------------------------------ critical put interface
2648:
2649: sub cput {
1.134 albertel 2650: my ($namespace,$storehash,$udomain,$uname)=@_;
2651: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2652: if (!$uname) { $uname=$ENV{'user.name'}; }
2653: my $uhome=&homeserver($uname,$udomain);
1.47 www 2654: my $items='';
1.191 harris41 2655: foreach (keys %$storehash) {
1.134 albertel 2656: $items.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 2657: }
1.47 www 2658: $items=~s/\&$//;
1.134 albertel 2659: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2660: }
2661:
2662: # -------------------------------------------------------------- eget interface
2663:
2664: sub eget {
1.133 albertel 2665: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2666: my $items='';
1.191 harris41 2667: foreach (@$storearr) {
1.12 www 2668: $items.=escape($_).'&';
1.191 harris41 2669: }
1.12 www 2670: $items=~s/\&$//;
1.133 albertel 2671: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2672: if (!$uname) { $uname=$ENV{'user.name'}; }
2673: my $uhome=&homeserver($uname,$udomain);
2674: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2675: my @pairs=split(/\&/,$rep);
2676: my %returnhash=();
1.42 www 2677: my $i=0;
1.191 harris41 2678: foreach (@$storearr) {
1.42 www 2679: $returnhash{$_}=unescape($pairs[$i]);
2680: $i++;
1.191 harris41 2681: }
1.12 www 2682: return %returnhash;
2683: }
2684:
1.341 www 2685: # ---------------------------------------------- Custom access rule evaluation
2686:
2687: sub customaccess {
2688: my ($priv,$uri)=@_;
1.342 www 2689: my ($urole,$urealm)=split(/\./,$ENV{'request.role'});
1.343 www 2690: $urealm=~s/^\W//;
2691: my ($udom,$ucrs,$usec)=split(/\//,$urealm);
1.341 www 2692: my $access=0;
2693: foreach (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
1.342 www 2694: my ($effect,$realm,$role)=split(/\:/,$_);
1.343 www 2695: if ($role) {
2696: if ($role ne $urole) { next; }
2697: }
2698: foreach (split(/\s*\,\s*/,$realm)) {
2699: my ($tdom,$tcrs,$tsec)=split(/\_/,$_);
2700: if ($tdom) {
2701: if ($tdom ne $udom) { next; }
2702: }
2703: if ($tcrs) {
2704: if ($tcrs ne $ucrs) { next; }
2705: }
2706: if ($tsec) {
2707: if ($tsec ne $usec) { next; }
2708: }
2709: $access=($effect eq 'allow');
2710: last;
1.342 www 2711: }
1.402 bowersj2 2712: if ($realm eq '' && $role eq '') {
2713: $access=($effect eq 'allow');
2714: }
1.341 www 2715: }
2716: return $access;
2717: }
2718:
1.103 harris41 2719: # ------------------------------------------------- Check for a user privilege
1.12 www 2720:
2721: sub allowed {
2722: my ($priv,$uri)=@_;
1.439 www 2723: $uri=&deversion($uri);
1.152 www 2724: my $orguri=$uri;
1.52 www 2725: $uri=&declutter($uri);
1.29 www 2726:
1.398 albertel 2727: if (defined($ENV{'allowed.'.$priv})) { return $ENV{'allowed.'.$priv}; }
1.54 www 2728: # Free bre access to adm and meta resources
1.29 www 2729:
1.54 www 2730: if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 2731: return 'F';
1.159 www 2732: }
2733:
2734: # Free bre to public access
2735:
2736: if ($priv eq 'bre') {
1.238 www 2737: my $copyright=&metadata($uri,'copyright');
1.301 www 2738: if (($copyright eq 'public') && (!$ENV{'request.course.id'})) {
2739: return 'F';
2740: }
1.238 www 2741: if ($copyright eq 'priv') {
2742: $uri=~/([^\/]+)\/([^\/]+)\//;
2743: unless (($ENV{'user.name'} eq $2) && ($ENV{'user.domain'} eq $1)) {
2744: return '';
2745: }
2746: }
2747: if ($copyright eq 'domain') {
2748: $uri=~/([^\/]+)\/([^\/]+)\//;
2749: unless (($ENV{'user.domain'} eq $1) ||
2750: ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $1)) {
2751: return '';
2752: }
1.262 matthew 2753: }
2754: if ($ENV{'request.role'}=~ /li\.\//) {
2755: # Library role, so allow browsing of resources in this domain.
2756: return 'F';
1.238 www 2757: }
1.341 www 2758: if ($copyright eq 'custom') {
2759: unless (&customaccess($priv,$uri)) { return ''; }
2760: }
1.14 www 2761: }
1.264 matthew 2762: # Domain coordinator is trying to create a course
2763: if (($priv eq 'ccc') && ($ENV{'request.role'} =~ /^dc\./)) {
2764: # uri is the requested domain in this case.
2765: # comparison to 'request.role.domain' shows if the user has selected
2766: # a role of dc for the domain in question.
2767: return 'F' if ($uri eq $ENV{'request.role.domain'});
2768: }
1.29 www 2769:
1.52 www 2770: my $thisallowed='';
2771: my $statecond=0;
2772: my $courseprivid='';
2773:
2774: # Course
2775:
1.479 albertel 2776: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2777: $thisallowed.=$1;
2778: }
1.29 www 2779:
1.52 www 2780: # Domain
2781:
2782: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1.479 albertel 2783: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 2784: $thisallowed.=$1;
2785: }
1.52 www 2786:
2787: # Course: uri itself is a course
1.66 www 2788: my $courseuri=$uri;
2789: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 2790: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 2791:
1.83 www 2792: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.479 albertel 2793: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 2794: $thisallowed.=$1;
2795: }
1.29 www 2796:
1.314 www 2797: # URI is an uploaded document for this course
2798:
1.492 albertel 2799: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
2800: my $refuri=$ENV{'httpref.'.$orguri};
2801: if ($refuri) {
2802: if ($refuri =~ m|^/adm/|) {
2803: $thisallowed='F';
2804: }
2805: }
1.314 www 2806: }
1.492 albertel 2807:
1.52 www 2808: # Full access at system, domain or course-wide level? Exit.
1.29 www 2809:
2810: if ($thisallowed=~/F/) {
2811: return 'F';
2812: }
2813:
1.52 www 2814: # If this is generating or modifying users, exit with special codes
1.29 www 2815:
1.479 albertel 2816: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:\Q$priv\E\:/) {
1.52 www 2817: return $thisallowed;
2818: }
2819: #
1.103 harris41 2820: # Gathered so far: system, domain and course wide privileges
1.52 www 2821: #
2822: # Course: See if uri or referer is an individual resource that is part of
2823: # the course
2824:
2825: if ($ENV{'request.course.id'}) {
1.232 www 2826:
1.52 www 2827: $courseprivid=$ENV{'request.course.id'};
2828: if ($ENV{'request.course.sec'}) {
2829: $courseprivid.='/'.$ENV{'request.course.sec'};
2830: }
2831: $courseprivid=~s/\_/\//;
2832: my $checkreferer=1;
1.232 www 2833: my ($match,$cond)=&is_on_map($uri);
2834: if ($match) {
2835: $statecond=$cond;
1.52 www 2836: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1.479 albertel 2837: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2838: $thisallowed.=$1;
2839: $checkreferer=0;
2840: }
1.29 www 2841: }
1.83 www 2842:
1.148 www 2843: if ($checkreferer) {
1.152 www 2844: my $refuri=$ENV{'httpref.'.$orguri};
1.148 www 2845: unless ($refuri) {
1.191 harris41 2846: foreach (keys %ENV) {
1.148 www 2847: if ($_=~/^httpref\..*\*/) {
2848: my $pattern=$_;
1.156 www 2849: $pattern=~s/^httpref\.\/res\///;
1.148 www 2850: $pattern=~s/\*/\[\^\/\]\+/g;
2851: $pattern=~s/\//\\\//g;
1.152 www 2852: if ($orguri=~/$pattern/) {
1.148 www 2853: $refuri=$ENV{$_};
2854: }
2855: }
1.191 harris41 2856: }
1.148 www 2857: }
1.232 www 2858:
1.148 www 2859: if ($refuri) {
1.152 www 2860: $refuri=&declutter($refuri);
1.232 www 2861: my ($match,$cond)=&is_on_map($refuri);
2862: if ($match) {
2863: my $refstatecond=$cond;
1.52 www 2864: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1.479 albertel 2865: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2866: $thisallowed.=$1;
1.53 www 2867: $uri=$refuri;
2868: $statecond=$refstatecond;
1.52 www 2869: }
2870: }
1.148 www 2871: }
1.29 www 2872: }
1.52 www 2873: }
1.29 www 2874:
1.52 www 2875: #
1.103 harris41 2876: # Gathered now: all privileges that could apply, and condition number
1.52 www 2877: #
2878: #
2879: # Full or no access?
2880: #
1.29 www 2881:
1.52 www 2882: if ($thisallowed=~/F/) {
2883: return 'F';
2884: }
1.29 www 2885:
1.52 www 2886: unless ($thisallowed) {
2887: return '';
2888: }
1.29 www 2889:
1.52 www 2890: # Restrictions exist, deal with them
2891: #
2892: # C:according to course preferences
2893: # R:according to resource settings
2894: # L:unless locked
2895: # X:according to user session state
2896: #
2897:
2898: # Possibly locked functionality, check all courses
1.54 www 2899: # Locks might take effect only after 10 minutes cache expiration for other
2900: # courses, and 2 minutes for current course
1.52 www 2901:
2902: my $envkey;
2903: if ($thisallowed=~/L/) {
2904: foreach $envkey (keys %ENV) {
1.54 www 2905: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
2906: my $courseid=$2;
2907: my $roleid=$1.'.'.$2;
1.92 www 2908: $courseid=~s/^\///;
1.54 www 2909: my $expiretime=600;
2910: if ($ENV{'request.role'} eq $roleid) {
2911: $expiretime=120;
2912: }
2913: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
2914: my $prefix='course.'.$cdom.'_'.$cnum.'.';
2915: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
2916: &coursedescription($courseid);
2917: }
1.479 albertel 2918: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
1.54 www 2919: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
2920: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 2921: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 2922: $ENV{'user.home'},
1.57 www 2923: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 2924: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 2925: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 2926: return '';
2927: }
2928: }
1.479 albertel 2929: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
1.54 www 2930: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
2931: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 2932: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 2933: $ENV{'user.home'},
1.57 www 2934: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 2935: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 2936: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 2937: return '';
2938: }
2939: }
2940: }
1.29 www 2941: }
1.52 www 2942: }
2943:
2944: #
2945: # Rest of the restrictions depend on selected course
2946: #
2947:
2948: unless ($ENV{'request.course.id'}) {
2949: return '1';
2950: }
1.29 www 2951:
1.52 www 2952: #
2953: # Now user is definitely in a course
2954: #
1.53 www 2955:
2956:
2957: # Course preferences
2958:
2959: if ($thisallowed=~/C/) {
1.54 www 2960: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.237 www 2961: my $unamedom=$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.54 www 2962: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1.479 albertel 2963: =~/\Q$rolecode\E/) {
1.57 www 2964: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
2965: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.237 www 2966: $ENV{'request.course.id'});
2967: return '';
2968: }
2969:
2970: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.users.denied'}
1.479 albertel 2971: =~/\Q$unamedom\E/) {
1.237 www 2972: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
2973: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
1.54 www 2974: $ENV{'request.course.id'});
2975: return '';
2976: }
1.53 www 2977: }
2978:
2979: # Resource preferences
2980:
2981: if ($thisallowed=~/R/) {
1.54 www 2982: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.479 albertel 2983: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
1.341 www 2984: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1.57 www 2985: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.341 www 2986: return '';
1.54 www 2987: }
1.53 www 2988: }
1.30 www 2989:
1.246 www 2990: # Restricted by state or randomout?
1.30 www 2991:
1.52 www 2992: if ($thisallowed=~/X/) {
1.247 www 2993: if ($ENV{'acc.randomout'}) {
1.249 www 2994: my $symb=&symbread($uri,1);
1.479 albertel 2995: if (($symb) && ($ENV{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
1.248 www 2996: return '';
2997: }
1.247 www 2998: }
2999: if (&condval($statecond)) {
1.52 www 3000: return '2';
3001: } else {
3002: return '';
3003: }
3004: }
1.30 www 3005:
1.52 www 3006: return 'F';
1.232 www 3007: }
3008:
3009: # --------------------------------------------------- Is a resource on the map?
3010:
3011: sub is_on_map {
3012: my $uri=&declutter(shift);
1.435 www 3013: $uri=~s/\.\d+\.(\w+)$/\.$1/;
1.232 www 3014: my @uriparts=split(/\//,$uri);
3015: my $filename=$uriparts[$#uriparts];
3016: my $pathname=$uri;
1.289 bowersj2 3017: $pathname=~s|/\Q$filename\E$||;
1.332 www 3018: $pathname=~s/^adm\/wrapper\///;
1.289 bowersj2 3019: #Trying to find the conditional for the file
1.232 www 3020: my $match=($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.289 bowersj2 3021: /\&\Q$filename\E\:([\d\|]+)\&/);
1.232 www 3022: if ($match) {
1.289 bowersj2 3023: return (1,$1);
3024: } else {
1.434 www 3025: return (0,0);
1.289 bowersj2 3026: }
1.12 www 3027: }
3028:
1.427 www 3029: # --------------------------------------------------------- Get symb from alias
3030:
3031: sub get_symb_from_alias {
3032: my $symb=shift;
3033: my ($map,$resid,$url)=&decode_symb($symb);
3034: # Already is a symb
3035: if ($url) { return $symb; }
3036: # Must be an alias
3037: my $aliassymb='';
3038: my %bighash;
3039: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
3040: &GDBM_READER(),0640)) {
3041: my $rid=$bighash{'mapalias_'.$symb};
3042: if ($rid) {
3043: my ($mapid,$resid)=split(/\./,$rid);
1.429 albertel 3044: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
3045: $resid,$bighash{'src_'.$rid});
1.427 www 3046: }
3047: untie %bighash;
3048: }
3049: return $aliassymb;
3050: }
3051:
1.12 www 3052: # ----------------------------------------------------------------- Define Role
3053:
3054: sub definerole {
3055: if (allowed('mcr','/')) {
3056: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.392 www 3057: foreach (split(':',$sysrole)) {
1.21 www 3058: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3059: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
3060: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
3061: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3062: return "refused:s:$crole&$cqual";
3063: }
3064: }
1.191 harris41 3065: }
1.392 www 3066: foreach (split(':',$domrole)) {
1.21 www 3067: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3068: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
3069: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
3070: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
1.21 www 3071: return "refused:d:$crole&$cqual";
3072: }
3073: }
1.191 harris41 3074: }
1.392 www 3075: foreach (split(':',$courole)) {
1.21 www 3076: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3077: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
3078: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
3079: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3080: return "refused:c:$crole&$cqual";
3081: }
3082: }
1.191 harris41 3083: }
1.12 www 3084: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
3085: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 3086: "rolesdef_$rolename=".
3087: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 3088: return reply($command,$ENV{'user.home'});
3089: } else {
3090: return 'refused';
3091: }
1.105 harris41 3092: }
3093:
3094: # ---------------- Make a metadata query against the network of library servers
3095:
3096: sub metadata_query {
1.244 matthew 3097: my ($query,$custom,$customshow,$server_array)=@_;
1.120 harris41 3098: my %rhash;
1.244 matthew 3099: my @server_list = (defined($server_array) ? @$server_array
3100: : keys(%libserv) );
3101: for my $server (@server_list) {
1.118 harris41 3102: unless ($custom or $customshow) {
3103: my $reply=&reply("querysend:".&escape($query),$server);
3104: $rhash{$server}=$reply;
3105: }
3106: else {
3107: my $reply=&reply("querysend:".&escape($query).':'.
3108: &escape($custom).':'.&escape($customshow),
3109: $server);
3110: $rhash{$server}=$reply;
3111: }
1.112 harris41 3112: }
1.118 harris41 3113: return \%rhash;
1.240 www 3114: }
3115:
3116: # ----------------------------------------- Send log queries and wait for reply
3117:
3118: sub log_query {
3119: my ($uname,$udom,$query,%filters)=@_;
3120: my $uhome=&homeserver($uname,$udom);
3121: if ($uhome eq 'no_host') { return 'error: no_host'; }
3122: my $uhost=$hostname{$uhome};
1.241 www 3123: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys %filters));
1.240 www 3124: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
3125: $uhome);
1.479 albertel 3126: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
1.242 www 3127: return get_query_reply($queryid);
3128: }
3129:
1.508 raeburn 3130: # ------- Request retrieval of institutional classlists for course(s)
1.506 raeburn 3131:
3132: sub fetch_enrollment_query {
1.511 raeburn 3133: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
1.508 raeburn 3134: my $homeserver;
1.523.2.7 albertel 3135: my $maxtries = 1;
1.508 raeburn 3136: if ($context eq 'automated') {
3137: $homeserver = $perlvar{'lonHostID'};
1.523.2.7 albertel 3138: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
1.508 raeburn 3139: } else {
3140: $homeserver = &homeserver($cnum,$dom);
3141: }
1.506 raeburn 3142: my $host=$hostname{$homeserver};
3143: my $cmd = '';
3144: foreach (keys %{$affiliatesref}) {
1.508 raeburn 3145: $cmd .= $_.'='.join(",",@{$$affiliatesref{$_}}).'%%';
1.506 raeburn 3146: }
3147: $cmd =~ s/%%$//;
3148: $cmd = &escape($cmd);
3149: my $query = 'fetchenrollment';
3150: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$ENV{'user.name'}.':'.$cmd,$homeserver);
3151: unless ($queryid=~/^\Q$host\E\_/) { return 'error: '.$queryid; }
3152: my $reply = &get_query_reply($queryid);
1.523.2.7 albertel 3153: my $tries = 1;
3154: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
3155: $reply = &get_query_reply($queryid);
3156: $tries++;
3157: }
3158: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
3159: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.
3160: $ENV{'user.name'}.' for '.$queryid.' context: '.$context.' '.
3161: $cnum.' maxtries: '.$maxtries.' tries: '.$tries);
3162: }
1.506 raeburn 3163: unless ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1.515 raeburn 3164: my @responses = split/:/,$reply;
3165: if ($homeserver eq $perlvar{'lonHostID'}) {
3166: foreach (@responses) {
3167: my ($key,$value) = split/=/,$_;
3168: $$replyref{$key} = $value;
3169: }
3170: } else {
1.506 raeburn 3171: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
3172: foreach (@responses) {
3173: my ($key,$value) = split/=/,$_;
3174: $$replyref{$key} = $value;
3175: if ($value > 0) {
3176: foreach (@{$$affiliatesref{$key}}) {
3177: my $filename = $dom.'_'.$key.'_'.$_.'_classlist.xml';
3178: my $destname = $pathname.'/'.$filename;
3179: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
3180: unless ($xml_classlist =~ /^error/) {
3181: if ( open(FILE,">$destname") ) {
3182: print FILE &unescape($xml_classlist);
3183: close(FILE);
3184: }
3185: }
3186: }
3187: }
3188: }
3189: }
3190: return 'ok';
3191: }
3192: return 'error';
3193: }
3194:
1.242 www 3195: sub get_query_reply {
3196: my $queryid=shift;
1.240 www 3197: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
3198: my $reply='';
3199: for (1..100) {
3200: sleep 2;
3201: if (-e $replyfile.'.end') {
1.448 albertel 3202: if (open(my $fh,$replyfile)) {
1.240 www 3203: $reply.=<$fh>;
1.448 albertel 3204: close($fh);
1.240 www 3205: } else { return 'error: reply_file_error'; }
1.242 www 3206: return &unescape($reply);
3207: }
1.240 www 3208: }
1.242 www 3209: return 'timeout:'.$queryid;
1.240 www 3210: }
3211:
3212: sub courselog_query {
1.241 www 3213: #
3214: # possible filters:
3215: # url: url or symb
3216: # username
3217: # domain
3218: # action: view, submit, grade
3219: # start: timestamp
3220: # end: timestamp
3221: #
1.240 www 3222: my (%filters)=@_;
3223: unless ($ENV{'request.course.id'}) { return 'no_course'; }
1.241 www 3224: if ($filters{'url'}) {
3225: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
3226: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
3227: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
3228: }
1.240 www 3229: my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
3230: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
3231: return &log_query($cname,$cdom,'courselog',%filters);
3232: }
3233:
3234: sub userlog_query {
3235: my ($uname,$udom,%filters)=@_;
3236: return &log_query($uname,$udom,'userlog',%filters);
1.12 www 3237: }
3238:
1.506 raeburn 3239: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
3240:
3241: sub auto_run {
1.508 raeburn 3242: my ($cnum,$cdom) = @_;
3243: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3244: my $response = &reply('autorun:'.$cdom,$homeserver);
1.506 raeburn 3245: return $response;
3246: }
3247:
3248: sub auto_get_sections {
1.508 raeburn 3249: my ($cnum,$cdom,$inst_coursecode) = @_;
3250: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3251: my @secs = ();
1.511 raeburn 3252: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
1.506 raeburn 3253: unless ($response eq 'refused') {
3254: @secs = split/:/,$response;
3255: }
3256: return @secs;
3257: }
3258:
3259: sub auto_new_course {
1.508 raeburn 3260: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
3261: my $homeserver = &homeserver($cnum,$cdom);
1.515 raeburn 3262: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
1.506 raeburn 3263: return $response;
3264: }
3265:
3266: sub auto_validate_courseID {
1.508 raeburn 3267: my ($cnum,$cdom,$inst_course_id) = @_;
3268: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3269: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
1.506 raeburn 3270: return $response;
3271: }
3272:
3273: sub auto_create_password {
1.508 raeburn 3274: my ($cnum,$cdom,$authparam) = @_;
3275: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3276: my $create_passwd = 0;
3277: my $authchk = '';
1.511 raeburn 3278: my $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
1.506 raeburn 3279: if ($response eq 'refused') {
3280: $authchk = 'refused';
3281: } else {
3282: ($authparam,$create_passwd,$authchk) = split/:/,$response;
3283: }
3284: return ($authparam,$create_passwd,$authchk);
3285: }
3286:
1.521 raeburn 3287: sub auto_instcode_format {
3288: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
3289: my $courses = '';
3290: my $homeserver;
3291: if ($caller eq 'global') {
3292: $homeserver = $perlvar{'lonHostID'};
3293: } else {
3294: $homeserver = &homeserver($caller,$codedom);
3295: }
3296: my $host=$hostname{$homeserver};
3297: foreach (keys %{$instcodes}) {
3298: $courses .= &escape($_).'='.&escape($$instcodes{$_}).'&';
3299: }
3300: chop($courses);
3301: my $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$homeserver);
3302: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
3303: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) = split/:/,$response;
3304: %{$codes} = &str2hash($codes_str);
3305: @{$codetitles} = &str2array($codetitles_str);
3306: %{$cat_titles} = &str2hash($cat_titles_str);
3307: %{$cat_order} = &str2hash($cat_order_str);
3308: return 'ok';
3309: }
3310: return $response;
3311: }
3312:
1.12 www 3313: # ------------------------------------------------------------------ Plain Text
3314:
3315: sub plaintext {
1.22 www 3316: my $short=shift;
1.414 www 3317: return &mt($prp{$short});
1.12 www 3318: }
3319:
3320: # ----------------------------------------------------------------- Assign Role
3321:
3322: sub assignrole {
1.357 www 3323: my ($udom,$uname,$url,$role,$end,$start,$deleteflag)=@_;
1.21 www 3324: my $mrole;
3325: if ($role =~ /^cr\//) {
1.393 www 3326: my $cwosec=$url;
3327: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
3328: unless (&allowed('ccr',$cwosec)) {
1.104 www 3329: &logthis('Refused custom assignrole: '.
3330: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
3331: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
3332: return 'refused';
3333: }
1.21 www 3334: $mrole='cr';
3335: } else {
1.82 www 3336: my $cwosec=$url;
1.83 www 3337: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.373 www 3338: unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) {
1.104 www 3339: &logthis('Refused assignrole: '.
3340: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
3341: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
3342: return 'refused';
3343: }
1.21 www 3344: $mrole=$role;
3345: }
3346: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
3347: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 3348: if ($end) { $command.='_'.$end; }
1.21 www 3349: if ($start) {
3350: if ($end) {
1.81 www 3351: $command.='_'.$start;
1.21 www 3352: } else {
1.81 www 3353: $command.='_0_'.$start;
1.21 www 3354: }
3355: }
1.357 www 3356: # actually delete
3357: if ($deleteflag) {
1.373 www 3358: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
1.357 www 3359: # modify command to delete the role
3360: $command="encrypt:rolesdel:$ENV{'user.domain'}:$ENV{'user.name'}:".
3361: "$udom:$uname:$url".'_'."$mrole";
1.373 www 3362: &logthis("$ENV{'user.name'} at $ENV{'user.domain'} deletes $mrole in $url for $uname at $udom");
1.357 www 3363: # set start and finish to negative values for userrolelog
3364: $start=-1;
3365: $end=-1;
3366: }
3367: }
3368: # send command
1.349 www 3369: my $answer=&reply($command,&homeserver($uname,$udom));
1.357 www 3370: # log new user role if status is ok
1.349 www 3371: if ($answer eq 'ok') {
3372: &userrolelog($mrole,$uname,$udom,$url,$start,$end);
3373: }
3374: return $answer;
1.169 harris41 3375: }
3376:
3377: # -------------------------------------------------- Modify user authentication
1.197 www 3378: # Overrides without validation
3379:
1.169 harris41 3380: sub modifyuserauth {
3381: my ($udom,$uname,$umode,$upass)=@_;
3382: my $uhome=&homeserver($uname,$udom);
1.197 www 3383: unless (&allowed('mau',$udom)) { return 'refused'; }
3384: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
1.272 matthew 3385: $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
3386: ' in domain '.$ENV{'request.role.domain'});
1.169 harris41 3387: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
3388: &escape($upass),$uhome);
1.197 www 3389: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
3390: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
3391: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
3392: &log($udom,,$uname,$uhome,
3393: 'Authentication changed by '.$ENV{'user.domain'}.', '.
3394: $ENV{'user.name'}.', '.$umode.
3395: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
1.169 harris41 3396: unless ($reply eq 'ok') {
1.197 www 3397: &logthis('Authentication mode error: '.$reply);
1.169 harris41 3398: return 'error: '.$reply;
3399: }
1.170 harris41 3400: return 'ok';
1.80 www 3401: }
3402:
1.81 www 3403: # --------------------------------------------------------------- Modify a user
1.80 www 3404:
1.81 www 3405: sub modifyuser {
1.206 matthew 3406: my ($udom, $uname, $uid,
3407: $umode, $upass, $first,
3408: $middle, $last, $gene,
1.387 www 3409: $forceid, $desiredhome, $email)=@_;
1.198 www 3410: $udom=~s/\W//g;
3411: $uname=~s/\W//g;
1.81 www 3412: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3413: $umode.', '.$first.', '.$middle.', '.
1.206 matthew 3414: $last.', '.$gene.'(forceid: '.$forceid.')'.
3415: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
3416: ' desiredhome not specified').
1.272 matthew 3417: ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
3418: ' in domain '.$ENV{'request.role.domain'});
1.230 stredwic 3419: my $uhome=&homeserver($uname,$udom,'true');
1.80 www 3420: # ----------------------------------------------------------------- Create User
1.406 albertel 3421: if (($uhome eq 'no_host') &&
3422: (($umode && $upass) || ($umode eq 'localauth'))) {
1.80 www 3423: my $unhome='';
1.209 matthew 3424: if (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) {
3425: $unhome = $desiredhome;
3426: } elsif($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1.80 www 3427: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.209 matthew 3428: } else { # load balancing routine for determining $unhome
1.80 www 3429: my $tryserver;
1.81 www 3430: my $loadm=10000000;
1.80 www 3431: foreach $tryserver (keys %libserv) {
3432: if ($hostdom{$tryserver} eq $udom) {
3433: my $answer=reply('load',$tryserver);
3434: if (($answer=~/\d+/) && ($answer<$loadm)) {
3435: $loadm=$answer;
3436: $unhome=$tryserver;
3437: }
3438: }
3439: }
3440: }
3441: if (($unhome eq '') || ($unhome eq 'no_host')) {
1.206 matthew 3442: return 'error: unable to find a home server for '.$uname.
3443: ' in domain '.$udom;
1.80 www 3444: }
3445: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
3446: &escape($upass),$unhome);
3447: unless ($reply eq 'ok') {
3448: return 'error: '.$reply;
3449: }
1.230 stredwic 3450: $uhome=&homeserver($uname,$udom,'true');
1.80 www 3451: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1.386 matthew 3452: return 'error: unable verify users home machine.';
1.80 www 3453: }
1.209 matthew 3454: } # End of creation of new user
1.80 www 3455: # ---------------------------------------------------------------------- Add ID
3456: if ($uid) {
3457: $uid=~tr/A-Z/a-z/;
3458: my %uidhash=&idrget($udom,$uname);
1.196 www 3459: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
3460: && (!$forceid)) {
1.80 www 3461: unless ($uid eq $uidhash{$uname}) {
1.386 matthew 3462: return 'error: user id "'.$uid.'" does not match '.
3463: 'current user id "'.$uidhash{$uname}.'".';
1.80 www 3464: }
3465: } else {
3466: &idput($udom,($uname => $uid));
3467: }
3468: }
3469: # -------------------------------------------------------------- Add names, etc
1.313 matthew 3470: my @tmp=&get('environment',
1.134 albertel 3471: ['firstname','middlename','lastname','generation'],
3472: $udom,$uname);
1.313 matthew 3473: my %names;
3474: if ($tmp[0] =~ m/^error:.*/) {
3475: %names=();
3476: } else {
3477: %names = @tmp;
3478: }
1.388 www 3479: #
3480: # Make sure to not trash student environment if instructor does not bother
3481: # to supply name and email information
3482: #
3483: if ($first) { $names{'firstname'} = $first; }
1.385 matthew 3484: if (defined($middle)) { $names{'middlename'} = $middle; }
1.388 www 3485: if ($last) { $names{'lastname'} = $last; }
1.385 matthew 3486: if (defined($gene)) { $names{'generation'} = $gene; }
1.388 www 3487: if ($email) { $names{'notification'} = $email;
3488: $names{'critnotification'} = $email; }
1.387 www 3489:
1.134 albertel 3490: my $reply = &put('environment', \%names, $udom,$uname);
3491: if ($reply ne 'ok') { return 'error: '.$reply; }
1.81 www 3492: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3493: $umode.', '.$first.', '.$middle.', '.
3494: $last.', '.$gene.' by '.
3495: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.134 albertel 3496: return 'ok';
1.80 www 3497: }
3498:
1.81 www 3499: # -------------------------------------------------------------- Modify student
1.80 www 3500:
1.81 www 3501: sub modifystudent {
3502: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1.515 raeburn 3503: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
1.455 albertel 3504: if (!$cid) {
3505: unless ($cid=$ENV{'request.course.id'}) {
3506: return 'not_in_class';
3507: }
1.80 www 3508: }
3509: # --------------------------------------------------------------- Make the user
1.81 www 3510: my $reply=&modifyuser
1.209 matthew 3511: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
1.387 www 3512: $desiredhome,$email);
1.80 www 3513: unless ($reply eq 'ok') { return $reply; }
1.297 matthew 3514: # This will cause &modify_student_enrollment to get the uid from the
3515: # students environment
3516: $uid = undef if (!$forceid);
1.455 albertel 3517: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
1.515 raeburn 3518: $gene,$usec,$end,$start,$type,$locktype,$cid);
1.297 matthew 3519: return $reply;
3520: }
3521:
3522: sub modify_student_enrollment {
1.515 raeburn 3523: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid) = @_;
1.455 albertel 3524: my ($cdom,$cnum,$chome);
3525: if (!$cid) {
3526: unless ($cid=$ENV{'request.course.id'}) {
3527: return 'not_in_class';
3528: }
3529: $cdom=$ENV{'course.'.$cid.'.domain'};
3530: $cnum=$ENV{'course.'.$cid.'.num'};
3531: } else {
3532: ($cdom,$cnum)=split(/_/,$cid);
3533: }
3534: $chome=$ENV{'course.'.$cid.'.home'};
3535: if (!$chome) {
1.457 raeburn 3536: $chome=&homeserver($cnum,$cdom);
1.297 matthew 3537: }
1.455 albertel 3538: if (!$chome) { return 'unknown_course'; }
1.297 matthew 3539: # Make sure the user exists
1.81 www 3540: my $uhome=&homeserver($uname,$udom);
3541: if (($uhome eq '') || ($uhome eq 'no_host')) {
3542: return 'error: no such user';
3543: }
1.297 matthew 3544: # Get student data if we were not given enough information
3545: if (!defined($first) || $first eq '' ||
3546: !defined($last) || $last eq '' ||
3547: !defined($uid) || $uid eq '' ||
3548: !defined($middle) || $middle eq '' ||
3549: !defined($gene) || $gene eq '') {
1.294 matthew 3550: # They did not supply us with enough data to enroll the student, so
3551: # we need to pick up more information.
1.297 matthew 3552: my %tmp = &get('environment',
1.294 matthew 3553: ['firstname','middlename','lastname', 'generation','id']
1.297 matthew 3554: ,$udom,$uname);
3555:
1.455 albertel 3556: #foreach (keys(%tmp)) {
3557: # &logthis("key $_ = ".$tmp{$_});
3558: #}
1.294 matthew 3559: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
3560: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
3561: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
1.297 matthew 3562: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
1.294 matthew 3563: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
3564: }
3565: my $fullname = &Apache::loncoursedata::ProcessFullName($last,$gene,
3566: $first,$middle);
1.487 albertel 3567: my $reply=cput('classlist',
3568: {"$uname:$udom" =>
1.515 raeburn 3569: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
1.487 albertel 3570: $cdom,$cnum);
1.81 www 3571: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
3572: return 'error: '.$reply;
3573: }
1.297 matthew 3574: # Add student role to user
1.83 www 3575: my $uurl='/'.$cid;
1.81 www 3576: $uurl=~s/\_/\//g;
3577: if ($usec) {
3578: $uurl.='/'.$usec;
3579: }
3580: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 3581: }
3582:
1.84 www 3583: # ------------------------------------------------- Write to course preferences
3584:
3585: sub writecoursepref {
3586: my ($courseid,%prefs)=@_;
3587: $courseid=~s/^\///;
3588: $courseid=~s/\_/\//g;
3589: my ($cdomain,$cnum)=split(/\//,$courseid);
3590: my $chome=homeserver($cnum,$cdomain);
3591: if (($chome eq '') || ($chome eq 'no_host')) {
3592: return 'error: no such course';
3593: }
3594: my $cstring='';
1.191 harris41 3595: foreach (keys %prefs) {
1.84 www 3596: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1.191 harris41 3597: }
1.84 www 3598: $cstring=~s/\&$//;
3599: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
3600: }
3601:
3602: # ---------------------------------------------------------- Make/modify course
3603:
3604: sub createcourse {
1.516 raeburn 3605: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code)=@_;
1.84 www 3606: $url=&declutter($url);
3607: my $cid='';
1.264 matthew 3608: unless (&allowed('ccc',$udom)) {
1.84 www 3609: return 'refused';
3610: }
3611: # ------------------------------------------------------------------- Create ID
3612: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
3613: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
3614: # ----------------------------------------------- Make sure that does not exist
1.230 stredwic 3615: my $uhome=&homeserver($uname,$udom,'true');
1.84 www 3616: unless (($uhome eq '') || ($uhome eq 'no_host')) {
3617: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
3618: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1.230 stredwic 3619: $uhome=&homeserver($uname,$udom,'true');
1.84 www 3620: unless (($uhome eq '') || ($uhome eq 'no_host')) {
3621: return 'error: unable to generate unique course-ID';
3622: }
3623: }
1.264 matthew 3624: # ------------------------------------------------ Check supplied server name
3625: $course_server = $ENV{'user.homeserver'} if (! defined($course_server));
3626: if (! exists($libserv{$course_server})) {
3627: return 'error:bad server name '.$course_server;
3628: }
1.84 www 3629: # ------------------------------------------------------------- Make the course
3630: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1.264 matthew 3631: $course_server);
1.84 www 3632: unless ($reply eq 'ok') { return 'error: '.$reply; }
1.230 stredwic 3633: $uhome=&homeserver($uname,$udom,'true');
1.84 www 3634: if (($uhome eq '') || ($uhome eq 'no_host')) {
3635: return 'error: no such course';
3636: }
1.271 www 3637: # ----------------------------------------------------------------- Course made
1.516 raeburn 3638: # log existence
3639: &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
3640: '='.&escape($inst_code),$uhome);
1.358 www 3641: &flushcourselogs();
3642: # set toplevel url
1.271 www 3643: my $topurl=$url;
3644: unless ($nonstandard) {
3645: # ------------------------------------------ For standard courses, make top url
3646: my $mapurl=&clutter($url);
1.278 www 3647: if ($mapurl eq '/res/') { $mapurl=''; }
1.271 www 3648: $ENV{'form.initmap'}=(<<ENDINITMAP);
3649: <map>
3650: <resource id="1" type="start"></resource>
3651: <resource id="2" src="$mapurl"></resource>
3652: <resource id="3" type="finish"></resource>
3653: <link index="1" from="1" to="2"></link>
3654: <link index="2" from="2" to="3"></link>
3655: </map>
3656: ENDINITMAP
3657: $topurl=&declutter(
3658: &finishuserfileupload($uname,$udom,$uhome,'initmap','default.sequence')
3659: );
3660: }
3661: # ----------------------------------------------------------- Write preferences
1.84 www 3662: &writecoursepref($udom.'_'.$uname,
3663: ('description' => $description,
1.271 www 3664: 'url' => $topurl));
1.84 www 3665: return '/'.$udom.'/'.$uname;
3666: }
3667:
1.21 www 3668: # ---------------------------------------------------------- Assign Custom Role
3669:
3670: sub assigncustomrole {
1.357 www 3671: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
1.21 www 3672: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1.357 www 3673: $end,$start,$deleteflag);
1.21 www 3674: }
3675:
3676: # ----------------------------------------------------------------- Revoke Role
3677:
3678: sub revokerole {
1.357 www 3679: my ($udom,$uname,$url,$role,$deleteflag)=@_;
1.21 www 3680: my $now=time;
1.357 www 3681: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
1.21 www 3682: }
3683:
3684: # ---------------------------------------------------------- Revoke Custom Role
3685:
3686: sub revokecustomrole {
1.357 www 3687: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
1.21 www 3688: my $now=time;
1.357 www 3689: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
3690: $deleteflag);
1.17 www 3691: }
3692:
1.512 banghart 3693:
3694: # ------------------------------------------------------------ Portfolio Director Lister
1.519 banghart 3695: # returns listing of contents of user's /userfiles/portfolio/ directory
3696: #
3697:
1.512 banghart 3698: sub portfoliolist {
1.520 albertel 3699: my ($currentPath, $currentFile) = @_;
3700: my ($udom, $uname, $portfolioRoot);
3701: $uname=$ENV{'user.name'};
1.514 albertel 3702: $udom=$ENV{'user.domain'};
1.519 banghart 3703: # really should interrogate the system for home directory information, but . . .
3704: $portfolioRoot = '/home/httpd/lonUsers/'.$udom.'/';
3705: $uname =~ /^(.?)(.?)(.?)/;
3706: $portfolioRoot = $portfolioRoot.$1.'/'.$2.'/'.$3.'/'.$uname.'/userfiles/portfolio';
1.520 albertel 3707: my $listing = &reply('ls:'.$portfolioRoot.$currentPath, &homeserver($uname,$udom));
3708: return $listing;
1.513 banghart 3709: }
1.514 albertel 3710:
1.513 banghart 3711: sub portfoliomanage {
1.514 albertel 3712:
3713: #FIXME please user the existing remove userfile function instead and
3714: #add a userfilerename functions.
3715: #FIXME uhome should never be an argument to any lonnet functions
3716:
3717: # handles deleting and renaming files in user's userfiles/portfolio/ directory
3718: #
3719: my ($filename, $fileaction, $filenewname) = @_;
3720: my ($udom, $uname, $uhome);
3721: $uname=$ENV{'user.name'};
3722: $udom=$ENV{'user.domain'};
3723: $uhome=$ENV{'user.home'};
3724: my $listing = reply('portfoliomanage:'.$uname.':'.$udom.':'.$filename.':'.$fileaction.':'.$filenewname, $uhome);
3725: return $listing;
1.512 banghart 3726: }
3727:
3728:
1.17 www 3729: # ------------------------------------------------------------ Directory lister
3730:
3731: sub dirlist {
1.253 stredwic 3732: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
3733:
1.18 www 3734: $uri=~s/^\///;
3735: $uri=~s/\/$//;
1.253 stredwic 3736: my ($udom, $uname);
3737: (undef,$udom,$uname)=split(/\//,$uri);
3738: if(defined($userdomain)) {
3739: $udom = $userdomain;
3740: }
3741: if(defined($username)) {
3742: $uname = $username;
3743: }
3744:
3745: my $dirRoot = $perlvar{'lonDocRoot'};
3746: if(defined($alternateDirectoryRoot)) {
3747: $dirRoot = $alternateDirectoryRoot;
3748: $dirRoot =~ s/\/$//;
3749: }
3750:
3751: if($udom) {
3752: if($uname) {
3753: my $listing=reply('ls:'.$dirRoot.'/'.$uri,
3754: homeserver($uname,$udom));
3755: return split(/:/,$listing);
3756: } elsif(!defined($alternateDirectoryRoot)) {
3757: my $tryserver;
3758: my %allusers=();
3759: foreach $tryserver (keys %libserv) {
3760: if($hostdom{$tryserver} eq $udom) {
3761: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
3762: $udom, $tryserver);
3763: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
3764: && ($listing ne 'con_lost')) {
3765: foreach (split(/:/,$listing)) {
3766: my ($entry,@stat)=split(/&/,$_);
3767: $allusers{$entry}=1;
3768: }
3769: }
1.191 harris41 3770: }
1.253 stredwic 3771: }
3772: my $alluserstr='';
3773: foreach (sort keys %allusers) {
3774: $alluserstr.=$_.'&user:';
3775: }
3776: $alluserstr=~s/:$//;
3777: return split(/:/,$alluserstr);
3778: } else {
3779: my @emptyResults = ();
3780: push(@emptyResults, 'missing user name');
3781: return split(':',@emptyResults);
3782: }
3783: } elsif(!defined($alternateDirectoryRoot)) {
3784: my $tryserver;
3785: my %alldom=();
3786: foreach $tryserver (keys %libserv) {
3787: $alldom{$hostdom{$tryserver}}=1;
3788: }
3789: my $alldomstr='';
3790: foreach (sort keys %alldom) {
1.397 albertel 3791: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'/&domain:';
1.253 stredwic 3792: }
3793: $alldomstr=~s/:$//;
3794: return split(/:/,$alldomstr);
3795: } else {
3796: my @emptyResults = ();
3797: push(@emptyResults, 'missing domain');
3798: return split(':',@emptyResults);
1.275 stredwic 3799: }
3800: }
3801:
3802: # --------------------------------------------- GetFileTimestamp
3803: # This function utilizes dirlist and returns the date stamp for
3804: # when it was last modified. It will also return an error of -1
3805: # if an error occurs
3806:
1.410 matthew 3807: ##
3808: ## FIXME: This subroutine assumes its caller knows something about the
3809: ## directory structure of the home server for the student ($root).
3810: ## Not a good assumption to make. Since this is for looking up files
3811: ## in user directories, the full path should be constructed by lond, not
3812: ## whatever machine we request data from.
3813: ##
1.275 stredwic 3814: sub GetFileTimestamp {
3815: my ($studentDomain,$studentName,$filename,$root)=@_;
3816: $studentDomain=~s/\W//g;
3817: $studentName=~s/\W//g;
3818: my $subdir=$studentName.'__';
3819: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3820: my $proname="$studentDomain/$subdir/$studentName";
3821: $proname .= '/'.$filename;
1.375 matthew 3822: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
3823: $studentName, $root);
1.275 stredwic 3824: my @stats = split('&', $fileStat);
3825: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
1.375 matthew 3826: # @stats contains first the filename, then the stat output
3827: return $stats[10]; # so this is 10 instead of 9.
1.275 stredwic 3828: } else {
3829: return -1;
1.253 stredwic 3830: }
1.26 www 3831: }
3832:
3833: # -------------------------------------------------------- Value of a Condition
3834:
1.40 www 3835: sub directcondval {
3836: my $number=shift;
3837: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
3838: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
3839: } else {
3840: return 2;
3841: }
3842: }
3843:
1.26 www 3844: sub condval {
3845: my $condidx=shift;
3846: my $result=0;
1.54 www 3847: my $allpathcond='';
1.191 harris41 3848: foreach (split(/\|/,$condidx)) {
1.54 www 3849: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
3850: $allpathcond.=
3851: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
3852: }
1.191 harris41 3853: }
1.54 www 3854: $allpathcond=~s/\|$//;
1.33 www 3855: if ($ENV{'request.course.id'}) {
1.54 www 3856: if ($allpathcond) {
1.26 www 3857: my $operand='|';
3858: my @stack;
1.191 harris41 3859: foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {
1.26 www 3860: if ($_ eq '(') {
3861: push @stack,($operand,$result)
3862: } elsif ($_ eq ')') {
3863: my $before=pop @stack;
3864: if (pop @stack eq '&') {
3865: $result=$result>$before?$before:$result;
3866: } else {
3867: $result=$result>$before?$result:$before;
3868: }
3869: } elsif (($_ eq '&') || ($_ eq '|')) {
3870: $operand=$_;
3871: } else {
1.40 www 3872: my $new=directcondval($_);
1.26 www 3873: if ($operand eq '&') {
3874: $result=$result>$new?$new:$result;
3875: } else {
3876: $result=$result>$new?$result:$new;
1.191 harris41 3877: }
1.26 www 3878: }
1.191 harris41 3879: }
1.26 www 3880: }
3881: }
3882: return $result;
1.421 albertel 3883: }
3884:
3885: # ---------------------------------------------------- Devalidate courseresdata
3886:
3887: sub devalidatecourseresdata {
3888: my ($coursenum,$coursedomain)=@_;
3889: my $hashid=$coursenum.':'.$coursedomain;
1.428 albertel 3890: &devalidate_cache(\%courseresdatacache,$hashid,'courseres');
1.28 www 3891: }
3892:
1.200 www 3893: # --------------------------------------------------- Course Resourcedata Query
3894:
3895: sub courseresdata {
3896: my ($coursenum,$coursedomain,@which)=@_;
3897: my $coursehom=&homeserver($coursenum,$coursedomain);
3898: my $hashid=$coursenum.':'.$coursedomain;
1.425 albertel 3899: my ($result,$cached)=&is_cached(\%courseresdatacache,$hashid,'courseres');
1.417 albertel 3900: unless (defined($cached)) {
1.251 albertel 3901: my %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
1.417 albertel 3902: $result=\%dumpreply;
1.251 albertel 3903: my ($tmp) = keys(%dumpreply);
3904: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
1.425 albertel 3905: &do_cache(\%courseresdatacache,$hashid,$result,'courseres');
1.306 albertel 3906: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
3907: return $tmp;
1.416 albertel 3908: } elsif ($tmp =~ /^(error)/) {
1.417 albertel 3909: $result=undef;
1.425 albertel 3910: &do_cache(\%courseresdatacache,$hashid,$result,'courseres');
1.250 albertel 3911: }
3912: }
1.251 albertel 3913: foreach my $item (@which) {
1.417 albertel 3914: if (defined($result->{$item})) {
3915: return $result->{$item};
1.251 albertel 3916: }
1.250 albertel 3917: }
1.291 albertel 3918: return undef;
1.200 www 3919: }
3920:
1.379 matthew 3921: #
3922: # EXT resource caching routines
3923: #
3924:
3925: sub clear_EXT_cache_status {
1.383 albertel 3926: &delenv('cache.EXT.');
1.379 matthew 3927: }
3928:
3929: sub EXT_cache_status {
3930: my ($target_domain,$target_user) = @_;
1.383 albertel 3931: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.389 www 3932: if (exists($ENV{$cachename}) && ($ENV{$cachename}+600) > time) {
1.379 matthew 3933: # We know already the user has no data
3934: return 1;
3935: } else {
3936: return 0;
3937: }
3938: }
3939:
3940: sub EXT_cache_set {
3941: my ($target_domain,$target_user) = @_;
1.383 albertel 3942: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.379 matthew 3943: &appenv($cachename => time);
3944: }
3945:
1.28 www 3946: # --------------------------------------------------------- Value of a Variable
1.58 www 3947: sub EXT {
1.395 albertel 3948: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
1.218 albertel 3949:
1.68 www 3950: unless ($varname) { return ''; }
1.218 albertel 3951: #get real user name/domain, courseid and symb
3952: my $courseid;
1.359 albertel 3953: my $publicuser;
1.427 www 3954: if ($symbparm) {
3955: $symbparm=&get_symb_from_alias($symbparm);
3956: }
1.218 albertel 3957: if (!($uname && $udom)) {
1.360 albertel 3958: (my $cursymb,$courseid,$udom,$uname,$publicuser)=
1.378 matthew 3959: &Apache::lonxml::whichuser($symbparm);
1.218 albertel 3960: if (!$symbparm) { $symbparm=$cursymb; }
3961: } else {
3962: $courseid=$ENV{'request.course.id'};
3963: }
1.48 www 3964: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
3965: my $rest;
1.320 albertel 3966: if (defined($therest[0])) {
1.48 www 3967: $rest=join('.',@therest);
3968: } else {
3969: $rest='';
3970: }
1.320 albertel 3971:
1.57 www 3972: my $qualifierrest=$qualifier;
3973: if ($rest) { $qualifierrest.='.'.$rest; }
3974: my $spacequalifierrest=$space;
3975: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 3976: if ($realm eq 'user') {
1.48 www 3977: # --------------------------------------------------------------- user.resource
3978: if ($space eq 'resource') {
1.335 albertel 3979: if (defined($Apache::lonhomework::parsing_a_problem)) {
3980: return $Apache::lonhomework::history{$qualifierrest};
3981: } else {
1.359 albertel 3982: my %restored;
3983: if ($publicuser || $ENV{'request.state'} eq 'construct') {
3984: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
3985: } else {
3986: %restored=&restore($symbparm,$courseid,$udom,$uname);
3987: }
1.335 albertel 3988: return $restored{$qualifierrest};
3989: }
1.48 www 3990: # ----------------------------------------------------------------- user.access
3991: } elsif ($space eq 'access') {
1.218 albertel 3992: # FIXME - not supporting calls for a specific user
1.48 www 3993: return &allowed($qualifier,$rest);
3994: # ------------------------------------------ user.preferences, user.environment
3995: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.218 albertel 3996: if (($uname eq $ENV{'user.name'}) &&
3997: ($udom eq $ENV{'user.domain'})) {
3998: return $ENV{join('.',('environment',$qualifierrest))};
3999: } else {
1.359 albertel 4000: my %returnhash;
4001: if (!$publicuser) {
4002: %returnhash=&userenvironment($udom,$uname,
4003: $qualifierrest);
4004: }
1.218 albertel 4005: return $returnhash{$qualifierrest};
4006: }
1.48 www 4007: # ----------------------------------------------------------------- user.course
4008: } elsif ($space eq 'course') {
1.218 albertel 4009: # FIXME - not supporting calls for a specific user
1.48 www 4010: return $ENV{join('.',('request.course',$qualifier))};
4011: # ------------------------------------------------------------------- user.role
4012: } elsif ($space eq 'role') {
1.218 albertel 4013: # FIXME - not supporting calls for a specific user
1.48 www 4014: my ($role,$where)=split(/\./,$ENV{'request.role'});
4015: if ($qualifier eq 'value') {
4016: return $role;
4017: } elsif ($qualifier eq 'extent') {
4018: return $where;
4019: }
4020: # ----------------------------------------------------------------- user.domain
4021: } elsif ($space eq 'domain') {
1.218 albertel 4022: return $udom;
1.48 www 4023: # ------------------------------------------------------------------- user.name
4024: } elsif ($space eq 'name') {
1.218 albertel 4025: return $uname;
1.48 www 4026: # ---------------------------------------------------- Any other user namespace
1.29 www 4027: } else {
1.359 albertel 4028: my %reply;
4029: if (!$publicuser) {
4030: %reply=&get($space,[$qualifierrest],$udom,$uname);
4031: }
4032: return $reply{$qualifierrest};
1.48 www 4033: }
1.236 www 4034: } elsif ($realm eq 'query') {
4035: # ---------------------------------------------- pull stuff out of query string
1.384 albertel 4036: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
4037: [$spacequalifierrest]);
1.376 albertel 4038: return $ENV{'form.'.$spacequalifierrest};
1.236 www 4039: } elsif ($realm eq 'request') {
1.48 www 4040: # ------------------------------------------------------------- request.browser
4041: if ($space eq 'browser') {
1.430 www 4042: if ($qualifier eq 'textremote') {
4043: if (&mt('textual_remote_display') eq 'on') {
4044: return 1;
4045: } else {
4046: return 0;
4047: }
4048: } else {
4049: return $ENV{'browser.'.$qualifier};
4050: }
1.57 www 4051: # ------------------------------------------------------------ request.filename
4052: } else {
4053: return $ENV{'request.'.$spacequalifierrest};
1.29 www 4054: }
1.28 www 4055: } elsif ($realm eq 'course') {
1.48 www 4056: # ---------------------------------------------------------- course.description
1.218 albertel 4057: return $ENV{'course.'.$courseid.'.'.$spacequalifierrest};
1.57 www 4058: } elsif ($realm eq 'resource') {
1.165 www 4059:
1.395 albertel 4060: my $section;
1.359 albertel 4061: if (defined($courseid) && $courseid eq $ENV{'request.course.id'}) {
1.523.2.2 albertel 4062: if (!$symbparm) { $symbparm=&symbread(); }
4063: }
4064: if ($symbparm && defined($courseid) &&
4065: $courseid eq $ENV{'request.course.id'}) {
1.165 www 4066:
1.218 albertel 4067: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
1.165 www 4068:
1.60 www 4069: # ----------------------------------------------------- Cascading lookup scheme
1.218 albertel 4070: my $symbp=$symbparm;
1.409 www 4071: my $mapp=(&decode_symb($symbp))[0];
1.218 albertel 4072:
4073: my $symbparm=$symbp.'.'.$spacequalifierrest;
4074: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
4075:
4076: if (($ENV{'user.name'} eq $uname) &&
4077: ($ENV{'user.domain'} eq $udom)) {
1.255 albertel 4078: $section=$ENV{'request.course.sec'};
1.218 albertel 4079: } else {
1.523.2.2 albertel 4080: if (! defined($usection)) {
4081: $section=&usection($udom,$uname,$courseid);
4082: } else {
4083: $section = $usection;
4084: }
1.218 albertel 4085: }
4086:
4087: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
4088: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
4089: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
4090:
4091: my $courselevel=$courseid.'.'.$spacequalifierrest;
4092: my $courselevelr=$courseid.'.'.$symbparm;
4093: my $courselevelm=$courseid.'.'.$mapparm;
1.69 www 4094:
1.60 www 4095: # ----------------------------------------------------------- first, check user
1.379 matthew 4096: #most student don\'t have any data set, check if there is some data
4097: if (! &EXT_cache_status($udom,$uname)) {
1.420 albertel 4098: my $hashid="$udom:$uname";
1.425 albertel 4099: my ($result,$cached)=&is_cached(\%userresdatacache,$hashid,
4100: 'userres');
1.454 albertel 4101: if (!defined($cached)) {
4102: my %resourcedata=&dump('resourcedata',$udom,$uname);
1.420 albertel 4103: $result=\%resourcedata;
1.425 albertel 4104: &do_cache(\%userresdatacache,$hashid,$result,'userres');
1.420 albertel 4105: }
4106: my ($tmp)=keys(%$result);
1.308 albertel 4107: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
1.420 albertel 4108: if ($$result{$courselevelr}) {
4109: return $$result{$courselevelr}; }
4110: if ($$result{$courselevelm}) {
4111: return $$result{$courselevelm}; }
4112: if ($$result{$courselevel}) {
4113: return $$result{$courselevel}; }
1.308 albertel 4114: } else {
1.459 albertel 4115: #error 2 occurs when the .db doesn't exist
4116: if ($tmp!~/error: 2 /) {
1.308 albertel 4117: &logthis("<font color=blue>WARNING:".
4118: " Trying to get resource data for ".
4119: $uname." at ".$udom.": ".
4120: $tmp."</font>");
1.459 albertel 4121: } elsif ($tmp=~/error: 2 /) {
1.523.2.2 albertel 4122: &EXT_cache_set($udom,$uname);
1.308 albertel 4123: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
4124: return $tmp;
4125: }
1.218 albertel 4126: }
4127: }
1.95 www 4128:
1.60 www 4129: # -------------------------------------------------------- second, check course
1.96 www 4130:
1.218 albertel 4131: my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},
1.523.2.2 albertel 4132: $ENV{'course.'.$courseid.'.domain'},
4133: ($seclevelr,$seclevelm,$seclevel,
4134: $courselevelr,$courselevelm,
4135: $courselevel));
1.287 albertel 4136: if (defined($coursereply)) { return $coursereply; }
1.200 www 4137:
1.60 www 4138: # ------------------------------------------------------ third, check map parms
1.218 albertel 4139: my %parmhash=();
4140: my $thisparm='';
4141: if (tie(%parmhash,'GDBM_File',
4142: $ENV{'request.course.fn'}.'_parms.db',
1.256 albertel 4143: &GDBM_READER(),0640)) {
1.218 albertel 4144: $thisparm=$parmhash{$symbparm};
4145: untie(%parmhash);
4146: }
4147: if ($thisparm) { return $thisparm; }
4148: }
1.60 www 4149: # --------------------------------------------- last, look in resource metadata
1.71 www 4150:
1.218 albertel 4151: $spacequalifierrest=~s/\./\_/;
1.282 albertel 4152: my $filename;
4153: if (!$symbparm) { $symbparm=&symbread(); }
4154: if ($symbparm) {
1.409 www 4155: $filename=(&decode_symb($symbparm))[2];
1.282 albertel 4156: } else {
4157: $filename=$ENV{'request.filename'};
4158: }
4159: my $metadata=&metadata($filename,$spacequalifierrest);
1.288 albertel 4160: if (defined($metadata)) { return $metadata; }
1.282 albertel 4161: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
1.288 albertel 4162: if (defined($metadata)) { return $metadata; }
1.142 www 4163:
1.145 www 4164: # ------------------------------------------------------------------ Cascade up
1.218 albertel 4165: unless ($space eq '0') {
1.336 albertel 4166: my @parts=split(/_/,$space);
4167: my $id=pop(@parts);
4168: my $part=join('_',@parts);
4169: if ($part eq '') { $part='0'; }
4170: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
1.395 albertel 4171: $symbparm,$udom,$uname,$section,1);
1.337 albertel 4172: if (defined($partgeneral)) { return $partgeneral; }
1.218 albertel 4173: }
1.395 albertel 4174: if ($recurse) { return undef; }
4175: my $pack_def=&packages_tab_default($filename,$varname);
4176: if (defined($pack_def)) { return $pack_def; }
1.71 www 4177:
1.48 www 4178: # ---------------------------------------------------- Any other user namespace
4179: } elsif ($realm eq 'environment') {
4180: # ----------------------------------------------------------------- environment
1.219 albertel 4181: if (($uname eq $ENV{'user.name'})&&($udom eq $ENV{'user.domain'})) {
4182: return $ENV{'environment.'.$spacequalifierrest};
4183: } else {
4184: my %returnhash=&userenvironment($udom,$uname,
4185: $spacequalifierrest);
4186: return $returnhash{$spacequalifierrest};
4187: }
1.28 www 4188: } elsif ($realm eq 'system') {
1.48 www 4189: # ----------------------------------------------------------------- system.time
4190: if ($space eq 'time') {
4191: return time;
4192: }
1.28 www 4193: }
1.48 www 4194: return '';
1.61 www 4195: }
4196:
1.395 albertel 4197: sub packages_tab_default {
4198: my ($uri,$varname)=@_;
4199: my (undef,$part,$name)=split(/\./,$varname);
4200: my $packages=&metadata($uri,'packages');
4201: foreach my $package (split(/,/,$packages)) {
4202: my ($pack_type,$pack_part)=split(/_/,$package,2);
1.468 albertel 4203: if (defined($packagetab{"$pack_type&$name&default"})) {
4204: return $packagetab{"$pack_type&$name&default"};
4205: }
4206: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
4207: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
1.395 albertel 4208: }
4209: }
4210: return undef;
4211: }
4212:
1.334 albertel 4213: sub add_prefix_and_part {
4214: my ($prefix,$part)=@_;
4215: my $keyroot;
4216: if (defined($prefix) && $prefix !~ /^__/) {
4217: # prefix that has a part already
4218: $keyroot=$prefix;
4219: } elsif (defined($prefix)) {
4220: # prefix that is missing a part
4221: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
4222: } else {
4223: # no prefix at all
4224: if (defined($part)) { $keyroot='_'.$part; }
4225: }
4226: return $keyroot;
4227: }
4228:
1.71 www 4229: # ---------------------------------------------------------------- Get metadata
4230:
4231: sub metadata {
1.176 www 4232: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
1.71 www 4233: $uri=&declutter($uri);
1.288 albertel 4234: # if it is a non metadata possible uri return quickly
1.293 matthew 4235: if (($uri eq '') || (($uri =~ m|^/*adm/|) && ($uri !~ m|^adm/includes|)) ||
1.423 albertel 4236: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
1.489 albertel 4237: ($uri =~ m|home/[^/]+/public_html/|)) {
1.468 albertel 4238: return undef;
1.288 albertel 4239: }
1.73 www 4240: my $filename=$uri;
4241: $uri=~s/\.meta$//;
1.172 www 4242: #
4243: # Is the metadata already cached?
1.177 www 4244: # Look at timestamp of caching
1.172 www 4245: # Everything is cached by the main uri, libraries are never directly cached
4246: #
1.428 albertel 4247: if (!defined($liburi)) {
4248: my ($result,$cached)=&is_cached(\%metacache,$uri,'meta');
4249: if (defined($cached)) { return $result->{':'.$what}; }
4250: }
4251: {
1.172 www 4252: #
4253: # Is this a recursive call for a library?
4254: #
1.453 albertel 4255: if (! exists($metacache{$uri})) {
4256: $metacache{$uri}={};
4257: }
1.171 www 4258: if ($liburi) {
4259: $liburi=&declutter($liburi);
4260: $filename=$liburi;
1.401 bowersj2 4261: } else {
1.428 albertel 4262: &devalidate_cache(\%metacache,$uri,'meta');
1.401 bowersj2 4263: }
1.140 www 4264: my %metathesekeys=();
1.73 www 4265: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
1.489 albertel 4266: my $metastring;
4267: if ($uri !~ m|^uploaded/|) {
1.523.2.5 albertel 4268: my $file=&filelocation('',&clutter($filename));
4269: push(@{$metacache{$uri.'.file'}},$file);
4270: $metastring=&getfile($file);
1.489 albertel 4271: }
1.208 albertel 4272: my $parser=HTML::LCParser->new(\$metastring);
1.71 www 4273: my $token;
1.140 www 4274: undef %metathesekeys;
1.71 www 4275: while ($token=$parser->get_token) {
1.339 albertel 4276: if ($token->[0] eq 'S') {
4277: if (defined($token->[2]->{'package'})) {
1.172 www 4278: #
4279: # This is a package - get package info
4280: #
1.339 albertel 4281: my $package=$token->[2]->{'package'};
4282: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
4283: if (defined($token->[2]->{'id'})) {
4284: $keyroot.='_'.$token->[2]->{'id'};
4285: }
1.453 albertel 4286: if ($metacache{$uri}->{':packages'}) {
4287: $metacache{$uri}->{':packages'}.=','.$package.$keyroot;
1.339 albertel 4288: } else {
1.453 albertel 4289: $metacache{$uri}->{':packages'}=$package.$keyroot;
1.339 albertel 4290: }
4291: foreach (keys %packagetab) {
1.432 albertel 4292: my $part=$keyroot;
4293: $part=~s/^\_//;
4294: if ($_=~/^\Q$package\E\&/ ||
4295: $_=~/^\Q$package\E_0\&/) {
1.339 albertel 4296: my ($pack,$name,$subp)=split(/\&/,$_);
1.395 albertel 4297: # ignore package.tab specified default values
4298: # here &package_tab_default() will fetch those
4299: if ($subp eq 'default') { next; }
1.339 albertel 4300: my $value=$packagetab{$_};
1.432 albertel 4301: my $unikey;
4302: if ($pack =~ /_0$/) {
4303: $unikey='parameter_0_'.$name;
4304: $part=0;
4305: } else {
4306: $unikey='parameter'.$keyroot.'_'.$name;
4307: }
1.339 albertel 4308: if ($subp eq 'display') {
4309: $value.=' [Part: '.$part.']';
4310: }
1.453 albertel 4311: $metacache{$uri}->{':'.$unikey.'.part'}=$part;
1.395 albertel 4312: $metathesekeys{$unikey}=1;
1.453 albertel 4313: unless (defined($metacache{$uri}->{':'.$unikey.'.'.$subp})) {
4314: $metacache{$uri}->{':'.$unikey.'.'.$subp}=$value;
1.339 albertel 4315: }
1.453 albertel 4316: if (defined($metacache{$uri}->{':'.$unikey.'.default'})) {
4317: $metacache{$uri}->{':'.$unikey}=
4318: $metacache{$uri}->{':'.$unikey.'.default'};
1.356 albertel 4319: }
1.339 albertel 4320: }
4321: }
4322: } else {
1.172 www 4323: #
4324: # This is not a package - some other kind of start tag
1.339 albertel 4325: #
4326: my $entry=$token->[1];
4327: my $unikey;
4328: if ($entry eq 'import') {
4329: $unikey='';
4330: } else {
4331: $unikey=$entry;
4332: }
4333: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
4334:
4335: if (defined($token->[2]->{'id'})) {
4336: $unikey.='_'.$token->[2]->{'id'};
4337: }
1.175 www 4338:
1.339 albertel 4339: if ($entry eq 'import') {
1.175 www 4340: #
4341: # Importing a library here
1.339 albertel 4342: #
4343: if ($depthcount<20) {
4344: my $location=$parser->get_text('/import');
4345: my $dir=$filename;
4346: $dir=~s|[^/]*$||;
4347: $location=&filelocation($dir,$location);
4348: foreach (sort(split(/\,/,&metadata($uri,'keys',
4349: $location,$unikey,
4350: $depthcount+1)))) {
1.453 albertel 4351: $metacache{$uri}->{':'.$_}=$metacache{$uri}->{':'.$_};
1.339 albertel 4352: $metathesekeys{$_}=1;
4353: }
4354: }
4355: } else {
4356:
4357: if (defined($token->[2]->{'name'})) {
4358: $unikey.='_'.$token->[2]->{'name'};
4359: }
4360: $metathesekeys{$unikey}=1;
4361: foreach (@{$token->[3]}) {
1.453 albertel 4362: $metacache{$uri}->{':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.339 albertel 4363: }
4364: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
1.453 albertel 4365: my $default=$metacache{$uri}->{':'.$unikey.'.default'};
1.339 albertel 4366: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
4367: # only ws inside the tag, and not in default, so use default
4368: # as value
1.453 albertel 4369: $metacache{$uri}->{':'.$unikey}=$default;
1.339 albertel 4370: } else {
1.321 albertel 4371: # either something interesting inside the tag or default
4372: # uninteresting
1.453 albertel 4373: $metacache{$uri}->{':'.$unikey}=$internaltext;
1.339 albertel 4374: }
1.172 www 4375: # end of not-a-package not-a-library import
1.339 albertel 4376: }
1.172 www 4377: # end of not-a-package start tag
1.339 albertel 4378: }
1.172 www 4379: # the next is the end of "start tag"
1.339 albertel 4380: }
4381: }
1.483 albertel 4382: my ($extension) = ($uri =~ /\.(\w+)$/);
4383: foreach my $key (sort(keys(%packagetab))) {
4384: #&logthis("extsion1 $extension $key !!");
4385: #no specific packages #how's our extension
4386: if ($key!~/^extension_\Q$extension\E&/) { next; }
1.488 albertel 4387: &metadata_create_package_def($uri,$key,'extension_'.$extension,
1.483 albertel 4388: \%metathesekeys);
4389: }
4390: if (!exists($metacache{$uri}->{':packages'})) {
4391: foreach my $key (sort(keys(%packagetab))) {
4392: #no specific packages well let's get default then
4393: if ($key!~/^default&/) { next; }
1.488 albertel 4394: &metadata_create_package_def($uri,$key,'default',
1.483 albertel 4395: \%metathesekeys);
4396: }
4397: }
1.338 www 4398: # are there custom rights to evaluate
1.453 albertel 4399: if ($metacache{$uri}->{':copyright'} eq 'custom') {
1.339 albertel 4400:
1.338 www 4401: #
4402: # Importing a rights file here
1.339 albertel 4403: #
4404: unless ($depthcount) {
1.453 albertel 4405: my $location=$metacache{$uri}->{':customdistributionfile'};
1.339 albertel 4406: my $dir=$filename;
4407: $dir=~s|[^/]*$||;
4408: $location=&filelocation($dir,$location);
4409: foreach (sort(split(/\,/,&metadata($uri,'keys',
4410: $location,'_rights',
4411: $depthcount+1)))) {
1.453 albertel 4412: $metacache{$uri}->{':'.$_}=$metacache{$uri}->{':'.$_};
1.339 albertel 4413: $metathesekeys{$_}=1;
4414: }
4415: }
4416: }
1.453 albertel 4417: $metacache{$uri}->{':keys'}=join(',',keys %metathesekeys);
4418: &metadata_generate_part0(\%metathesekeys,$metacache{$uri},$uri);
4419: $metacache{$uri}->{':allpossiblekeys'}=join(',',keys %metathesekeys);
4420: &do_cache(\%metacache,$uri,$metacache{$uri},'meta');
1.177 www 4421: # this is the end of "was not already recently cached
1.71 www 4422: }
1.428 albertel 4423: return $metacache{$uri}->{':'.$what};
1.261 albertel 4424: }
4425:
1.488 albertel 4426: sub metadata_create_package_def {
1.483 albertel 4427: my ($uri,$key,$package,$metathesekeys)=@_;
4428: my ($pack,$name,$subp)=split(/\&/,$key);
4429: if ($subp eq 'default') { next; }
4430:
4431: if (defined($metacache{$uri}->{':packages'})) {
4432: $metacache{$uri}->{':packages'}.=','.$package;
4433: } else {
4434: $metacache{$uri}->{':packages'}=$package;
4435: }
4436: my $value=$packagetab{$key};
4437: my $unikey;
4438: $unikey='parameter_0_'.$name;
4439: $metacache{$uri}->{':'.$unikey.'.part'}=0;
4440: $$metathesekeys{$unikey}=1;
4441: unless (defined($metacache{$uri}->{':'.$unikey.'.'.$subp})) {
4442: $metacache{$uri}->{':'.$unikey.'.'.$subp}=$value;
4443: }
4444: if (defined($metacache{$uri}->{':'.$unikey.'.default'})) {
4445: $metacache{$uri}->{':'.$unikey}=
4446: $metacache{$uri}->{':'.$unikey.'.default'};
4447: }
4448: }
4449:
1.261 albertel 4450: sub metadata_generate_part0 {
4451: my ($metadata,$metacache,$uri) = @_;
4452: my %allnames;
4453: foreach my $metakey (sort keys %$metadata) {
4454: if ($metakey=~/^parameter\_(.*)/) {
1.428 albertel 4455: my $part=$$metacache{':'.$metakey.'.part'};
4456: my $name=$$metacache{':'.$metakey.'.name'};
1.356 albertel 4457: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
1.261 albertel 4458: $allnames{$name}=$part;
4459: }
4460: }
4461: }
4462: foreach my $name (keys(%allnames)) {
4463: $$metadata{"parameter_0_$name"}=1;
1.428 albertel 4464: my $key=":parameter_0_$name";
1.261 albertel 4465: $$metacache{"$key.part"}='0';
4466: $$metacache{"$key.name"}=$name;
1.428 albertel 4467: $$metacache{"$key.type"}=$$metacache{':parameter_'.
1.261 albertel 4468: $allnames{$name}.'_'.$name.
4469: '.type'};
1.428 albertel 4470: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
1.261 albertel 4471: '.display'};
4472: my $expr='\\[Part: '.$allnames{$name}.'\\]';
1.479 albertel 4473: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
1.261 albertel 4474: $$metacache{"$key.display"}=$olddis;
4475: }
1.71 www 4476: }
4477:
1.301 www 4478: # ------------------------------------------------- Get the title of a resource
4479:
4480: sub gettitle {
4481: my $urlsymb=shift;
4482: my $symb=&symbread($urlsymb);
4483: unless ($symb) {
4484: unless ($urlsymb) { $urlsymb=$ENV{'request.filename'}; }
4485: return &metadata($urlsymb,'title');
4486: }
1.425 albertel 4487: my ($result,$cached)=&is_cached(\%titlecache,$symb,'title',600);
1.419 albertel 4488: if (defined($cached)) { return $result; }
1.409 www 4489: my ($map,$resid,$url)=&decode_symb($symb);
1.301 www 4490: my $title='';
4491: my %bighash;
4492: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
4493: &GDBM_READER(),0640)) {
4494: my $mapid=$bighash{'map_pc_'.&clutter($map)};
4495: $title=$bighash{'title_'.$mapid.'.'.$resid};
4496: untie %bighash;
4497: }
1.363 www 4498: $title=~s/\&colon\;/\:/gs;
1.301 www 4499: if ($title) {
1.425 albertel 4500: return &do_cache(\%titlecache,$symb,$title,'title');
1.301 www 4501: } else {
4502: return &metadata($urlsymb,'title');
4503: }
4504: }
4505:
1.31 www 4506: # ------------------------------------------------- Update symbolic store links
4507:
4508: sub symblist {
4509: my ($mapname,%newhash)=@_;
1.438 www 4510: $mapname=&deversion(&declutter($mapname));
1.31 www 4511: my %hash;
4512: if (($ENV{'request.course.fn'}) && (%newhash)) {
4513: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1.256 albertel 4514: &GDBM_WRCREAT(),0640)) {
1.191 harris41 4515: foreach (keys %newhash) {
1.438 www 4516: $hash{declutter($_)}=$mapname.'___'.&deversion($newhash{$_});
1.191 harris41 4517: }
1.31 www 4518: if (untie(%hash)) {
4519: return 'ok';
4520: }
4521: }
4522: }
4523: return 'error';
1.212 www 4524: }
4525:
4526: # --------------------------------------------------------------- Verify a symb
4527:
4528: sub symbverify {
1.510 www 4529: my ($symb,$thisurl)=@_;
4530: my $thisfn=$thisurl;
4531: # wrapper not part of symbs
4532: $thisfn=~s/^\/adm\/wrapper//;
1.439 www 4533: $thisfn=&declutter($thisfn);
1.215 www 4534: # direct jump to resource in page or to a sequence - will construct own symbs
4535: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
4536: # check URL part
1.409 www 4537: my ($map,$resid,$url)=&decode_symb($symb);
1.439 www 4538:
1.431 www 4539: unless ($url eq $thisfn) { return 0; }
1.213 www 4540:
1.216 www 4541: $symb=&symbclean($symb);
1.510 www 4542: $thisurl=&deversion($thisurl);
1.439 www 4543: $thisfn=&deversion($thisfn);
1.213 www 4544:
4545: my %bighash;
4546: my $okay=0;
1.431 www 4547:
1.213 www 4548: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.256 albertel 4549: &GDBM_READER(),0640)) {
1.510 www 4550: my $ids=$bighash{'ids_'.&clutter($thisurl)};
1.216 www 4551: unless ($ids) {
1.510 www 4552: $ids=$bighash{'ids_/'.$thisurl};
1.216 www 4553: }
4554: if ($ids) {
4555: # ------------------------------------------------------------------- Has ID(s)
4556: foreach (split(/\,/,$ids)) {
4557: my ($mapid,$resid)=split(/\./,$_);
4558: if (
4559: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
4560: eq $symb) {
4561: $okay=1;
4562: }
4563: }
4564: }
1.213 www 4565: untie(%bighash);
4566: }
4567: return $okay;
1.31 www 4568: }
4569:
1.210 www 4570: # --------------------------------------------------------------- Clean-up symb
4571:
4572: sub symbclean {
4573: my $symb=shift;
1.213 www 4574:
1.210 www 4575: # remove version from map
4576: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
1.215 www 4577:
1.210 www 4578: # remove version from URL
4579: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
1.213 www 4580:
1.507 www 4581: # remove wrapper
4582:
1.510 www 4583: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
1.210 www 4584: return $symb;
1.409 www 4585: }
4586:
4587: # ---------------------------------------------- Split symb to find map and url
1.429 albertel 4588:
4589: sub encode_symb {
4590: my ($map,$resid,$url)=@_;
4591: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
4592: }
1.409 www 4593:
4594: sub decode_symb {
1.413 www 4595: my ($map,$resid,$url)=split(/\_\_\_/,shift);
4596: return (&fixversion($map),$resid,&fixversion($url));
4597: }
4598:
4599: sub fixversion {
4600: my $fn=shift;
4601: if ($fn=~/^(adm|uploaded|public)/) { return $fn; }
1.435 www 4602: my %bighash;
4603: my $uri=&clutter($fn);
1.440 www 4604: my $key=$ENV{'request.course.id'}.'_'.$uri;
4605: # is this cached?
4606: my ($result,$cached)=&is_cached(\%courseresversioncache,$key,
4607: 'courseresversion',600);
4608: if (defined($cached)) { return $result; }
4609: # unfortunately not cached, or expired
1.435 www 4610: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.440 www 4611: &GDBM_READER(),0640)) {
4612: if ($bighash{'version_'.$uri}) {
4613: my $version=$bighash{'version_'.$uri};
1.444 www 4614: unless (($version eq 'mostrecent') ||
4615: ($version==&getversion($uri))) {
1.440 www 4616: $uri=~s/\.(\w+)$/\.$version\.$1/;
4617: }
4618: }
4619: untie %bighash;
1.413 www 4620: }
1.440 www 4621: return &do_cache
4622: (\%courseresversioncache,$key,&declutter($uri),'courseresversion');
1.438 www 4623: }
4624:
4625: sub deversion {
4626: my $url=shift;
4627: $url=~s/\.\d+\.(\w+)$/\.$1/;
4628: return $url;
1.210 www 4629: }
4630:
1.31 www 4631: # ------------------------------------------------------ Return symb list entry
4632:
4633: sub symbread {
1.249 www 4634: my ($thisfn,$donotrecurse)=@_;
1.523.2.4 albertel 4635: my $cache_str='request.symbread.cached.'.$thisfn;
4636: if (defined($ENV{$cache_str})) { return $ENV{$cache_str}; }
1.242 www 4637: # no filename provided? try from environment
1.44 www 4638: unless ($thisfn) {
1.523.2.2 albertel 4639: if ($ENV{'request.symb'}) {
1.523.2.4 albertel 4640: return $ENV{$cache_str}=&symbclean($ENV{'request.symb'});
1.523.2.2 albertel 4641: }
1.44 www 4642: $thisfn=$ENV{'request.filename'};
4643: }
1.242 www 4644: # is that filename actually a symb? Verify, clean, and return
4645: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
1.523.2.2 albertel 4646: if (&symbverify($thisfn,$1)) {
1.523.2.4 albertel 4647: return $ENV{$cache_str}=&symbclean($thisfn);
1.523.2.2 albertel 4648: }
1.242 www 4649: }
1.44 www 4650: $thisfn=declutter($thisfn);
1.31 www 4651: my %hash;
1.37 www 4652: my %bighash;
4653: my $syval='';
1.45 www 4654: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.481 raeburn 4655: my $targetfn = $thisfn;
4656: if ( ($thisfn =~ m/^uploaded\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
4657: $targetfn = 'adm/wrapper/'.$thisfn;
4658: }
1.31 www 4659: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1.256 albertel 4660: &GDBM_READER(),0640)) {
1.481 raeburn 4661: $syval=$hash{$targetfn};
1.37 www 4662: untie(%hash);
4663: }
4664: # ---------------------------------------------------------- There was an entry
4665: if ($syval) {
4666: unless ($syval=~/\_\d+$/) {
4667: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.44 www 4668: &appenv('request.ambiguous' => $thisfn);
1.523.2.4 albertel 4669: return $ENV{$cache_str}='';
1.37 www 4670: }
4671: $syval.=$1;
4672: }
4673: } else {
4674: # ------------------------------------------------------- Was not in symb table
4675: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.256 albertel 4676: &GDBM_READER(),0640)) {
1.37 www 4677: # ---------------------------------------------- Get ID(s) for current resource
1.280 www 4678: my $ids=$bighash{'ids_'.&clutter($thisfn)};
1.65 www 4679: unless ($ids) {
4680: $ids=$bighash{'ids_/'.$thisfn};
1.242 www 4681: }
4682: unless ($ids) {
4683: # alias?
4684: $ids=$bighash{'mapalias_'.$thisfn};
1.65 www 4685: }
1.37 www 4686: if ($ids) {
4687: # ------------------------------------------------------------------- Has ID(s)
4688: my @possibilities=split(/\,/,$ids);
1.39 www 4689: if ($#possibilities==0) {
4690: # ----------------------------------------------- There is only one possibility
1.37 www 4691: my ($mapid,$resid)=split(/\./,$ids);
4692: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
1.249 www 4693: } elsif (!$donotrecurse) {
1.39 www 4694: # ------------------------------------------ There is more than one possibility
4695: my $realpossible=0;
1.191 harris41 4696: foreach (@possibilities) {
1.39 www 4697: my $file=$bighash{'src_'.$_};
4698: if (&allowed('bre',$file)) {
4699: my ($mapid,$resid)=split(/\./,$_);
4700: if ($bighash{'map_type_'.$mapid} ne 'page') {
4701: $realpossible++;
4702: $syval=declutter($bighash{'map_id_'.$mapid}).
4703: '___'.$resid;
4704: }
4705: }
1.191 harris41 4706: }
1.39 www 4707: if ($realpossible!=1) { $syval=''; }
1.249 www 4708: } else {
4709: $syval='';
1.37 www 4710: }
4711: }
4712: untie(%bighash)
1.481 raeburn 4713: }
1.31 www 4714: }
1.62 www 4715: if ($syval) {
1.523.2.4 albertel 4716: return $ENV{$cache_str}=&symbclean($syval.'___'.$thisfn);
1.62 www 4717: }
1.31 www 4718: }
1.44 www 4719: &appenv('request.ambiguous' => $thisfn);
1.523.2.4 albertel 4720: return $ENV{$cache_str}='';
1.31 www 4721: }
4722:
4723: # ---------------------------------------------------------- Return random seed
4724:
1.32 www 4725: sub numval {
4726: my $txt=shift;
4727: $txt=~tr/A-J/0-9/;
4728: $txt=~tr/a-j/0-9/;
4729: $txt=~tr/K-T/0-9/;
4730: $txt=~tr/k-t/0-9/;
4731: $txt=~tr/U-Z/0-5/;
4732: $txt=~tr/u-z/0-5/;
4733: $txt=~s/\D//g;
4734: return int($txt);
1.368 albertel 4735: }
4736:
1.484 albertel 4737: sub numval2 {
4738: my $txt=shift;
4739: $txt=~tr/A-J/0-9/;
4740: $txt=~tr/a-j/0-9/;
4741: $txt=~tr/K-T/0-9/;
4742: $txt=~tr/k-t/0-9/;
4743: $txt=~tr/U-Z/0-5/;
4744: $txt=~tr/u-z/0-5/;
4745: $txt=~s/\D//g;
4746: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
4747: my $total;
4748: foreach my $val (@txts) { $total+=$val; }
4749: return int($total);
4750: }
4751:
1.368 albertel 4752: sub latest_rnd_algorithm_id {
1.501 albertel 4753: return '64bit3';
1.366 albertel 4754: }
1.32 www 4755:
1.503 albertel 4756: sub get_rand_alg {
4757: my ($courseid)=@_;
4758: if (!$courseid) { $courseid=(&Apache::lonxml::whichuser())[1]; }
4759: if ($courseid) {
4760: return $ENV{"course.$courseid.rndseed"};
4761: }
4762: return &latest_rnd_algorithm_id();
4763: }
4764:
1.491 albertel 4765: sub getCODE {
4766: if (defined($ENV{'form.CODE'})) { return $ENV{'form.CODE'}; }
4767: if (defined($Apache::lonhomework::parsing_a_problem) &&
4768: defined($Apache::lonhomework::history{'resource.CODE'})) {
4769: return $Apache::lonhomework::history{'resource.CODE'};
4770: }
4771: return undef;
4772: }
4773:
1.31 www 4774: sub rndseed {
1.155 albertel 4775: my ($symb,$courseid,$domain,$username)=@_;
1.366 albertel 4776:
4777: my ($wsymb,$wcourseid,$wdomain,$wusername)=&Apache::lonxml::whichuser();
1.155 albertel 4778: if (!$symb) {
1.366 albertel 4779: unless ($symb=$wsymb) { return time; }
4780: }
4781: if (!$courseid) { $courseid=$wcourseid; }
4782: if (!$domain) { $domain=$wdomain; }
4783: if (!$username) { $username=$wusername }
1.503 albertel 4784: my $which=&get_rand_alg();
1.491 albertel 4785: if (defined(&getCODE())) {
1.484 albertel 4786: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
1.501 albertel 4787: } elsif ($which eq '64bit3') {
4788: return &rndseed_64bit3($symb,$courseid,$domain,$username);
1.443 albertel 4789: } elsif ($which eq '64bit2') {
4790: return &rndseed_64bit2($symb,$courseid,$domain,$username);
1.366 albertel 4791: } elsif ($which eq '64bit') {
4792: return &rndseed_64bit($symb,$courseid,$domain,$username);
4793: }
4794: return &rndseed_32bit($symb,$courseid,$domain,$username);
4795: }
4796:
4797: sub rndseed_32bit {
4798: my ($symb,$courseid,$domain,$username)=@_;
4799: {
4800: use integer;
4801: my $symbchck=unpack("%32C*",$symb) << 27;
4802: my $symbseed=numval($symb) << 22;
4803: my $namechck=unpack("%32C*",$username) << 17;
4804: my $nameseed=numval($username) << 12;
4805: my $domainseed=unpack("%32C*",$domain) << 7;
4806: my $courseseed=unpack("%32C*",$courseid);
4807: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
4808: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
4809: #&Apache::lonxml::debug("rndseed :$num:$symb");
4810: return $num;
4811: }
4812: }
4813:
4814: sub rndseed_64bit {
4815: my ($symb,$courseid,$domain,$username)=@_;
4816: {
4817: use integer;
4818: my $symbchck=unpack("%32S*",$symb) << 21;
4819: my $symbseed=numval($symb) << 10;
4820: my $namechck=unpack("%32S*",$username);
4821:
4822: my $nameseed=numval($username) << 21;
4823: my $domainseed=unpack("%32S*",$domain) << 10;
4824: my $courseseed=unpack("%32S*",$courseid);
4825:
4826: my $num1=$symbchck+$symbseed+$namechck;
4827: my $num2=$nameseed+$domainseed+$courseseed;
4828: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
4829: #&Apache::lonxml::debug("rndseed :$num:$symb");
4830: return "$num1,$num2";
1.155 albertel 4831: }
1.366 albertel 4832: }
4833:
1.443 albertel 4834: sub rndseed_64bit2 {
4835: my ($symb,$courseid,$domain,$username)=@_;
4836: {
4837: use integer;
4838: # strings need to be an even # of cahracters long, it it is odd the
4839: # last characters gets thrown away
4840: my $symbchck=unpack("%32S*",$symb.' ') << 21;
4841: my $symbseed=numval($symb) << 10;
4842: my $namechck=unpack("%32S*",$username.' ');
4843:
4844: my $nameseed=numval($username) << 21;
1.501 albertel 4845: my $domainseed=unpack("%32S*",$domain.' ') << 10;
4846: my $courseseed=unpack("%32S*",$courseid.' ');
4847:
4848: my $num1=$symbchck+$symbseed+$namechck;
4849: my $num2=$nameseed+$domainseed+$courseseed;
4850: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
4851: #&Apache::lonxml::debug("rndseed :$num:$symb");
4852: return "$num1,$num2";
4853: }
4854: }
4855:
4856: sub rndseed_64bit3 {
4857: my ($symb,$courseid,$domain,$username)=@_;
4858: {
4859: use integer;
4860: # strings need to be an even # of cahracters long, it it is odd the
4861: # last characters gets thrown away
4862: my $symbchck=unpack("%32S*",$symb.' ') << 21;
4863: my $symbseed=numval2($symb) << 10;
4864: my $namechck=unpack("%32S*",$username.' ');
4865:
4866: my $nameseed=numval2($username) << 21;
1.443 albertel 4867: my $domainseed=unpack("%32S*",$domain.' ') << 10;
4868: my $courseseed=unpack("%32S*",$courseid.' ');
4869:
4870: my $num1=$symbchck+$symbseed+$namechck;
4871: my $num2=$nameseed+$domainseed+$courseseed;
4872: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
4873: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.503 albertel 4874: return "$num1:$num2";
1.443 albertel 4875: }
4876: }
4877:
1.366 albertel 4878: sub rndseed_CODE_64bit {
4879: my ($symb,$courseid,$domain,$username)=@_;
1.155 albertel 4880: {
1.366 albertel 4881: use integer;
1.443 albertel 4882: my $symbchck=unpack("%32S*",$symb.' ') << 16;
1.484 albertel 4883: my $symbseed=numval2($symb);
1.491 albertel 4884: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
4885: my $CODEseed=numval(&getCODE());
1.443 albertel 4886: my $courseseed=unpack("%32S*",$courseid.' ');
1.484 albertel 4887: my $num1=$symbseed+$CODEchck;
4888: my $num2=$CODEseed+$courseseed+$symbchck;
4889: #&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
1.366 albertel 4890: #&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
1.503 albertel 4891: return "$num1:$num2";
1.366 albertel 4892: }
4893: }
4894:
4895: sub setup_random_from_rndseed {
4896: my ($rndseed)=@_;
1.503 albertel 4897: if ($rndseed =~/([,:])/) {
4898: my ($num1,$num2)=split(/[,:]/,$rndseed);
1.366 albertel 4899: &Math::Random::random_set_seed(abs($num1),abs($num2));
4900: } else {
4901: &Math::Random::random_set_seed_from_phrase($rndseed);
1.98 albertel 4902: }
1.36 albertel 4903: }
4904:
1.474 albertel 4905: sub latest_receipt_algorithm_id {
4906: return 'receipt2';
4907: }
4908:
1.480 www 4909: sub recunique {
4910: my $fucourseid=shift;
4911: my $unique;
4912: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2') {
4913: $unique=$ENV{"course.$fucourseid.internal.encseed"};
4914: } else {
4915: $unique=$perlvar{'lonReceipt'};
4916: }
4917: return unpack("%32C*",$unique);
4918: }
4919:
4920: sub recprefix {
4921: my $fucourseid=shift;
4922: my $prefix;
4923: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2') {
4924: $prefix=$ENV{"course.$fucourseid.internal.encpref"};
4925: } else {
4926: $prefix=$perlvar{'lonHostID'};
4927: }
4928: return unpack("%32C*",$prefix);
4929: }
4930:
1.76 www 4931: sub ireceipt {
1.474 albertel 4932: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
1.76 www 4933: my $cuname=unpack("%32C*",$funame);
4934: my $cudom=unpack("%32C*",$fudom);
4935: my $cucourseid=unpack("%32C*",$fucourseid);
4936: my $cusymb=unpack("%32C*",$fusymb);
1.480 www 4937: my $cunique=&recunique($fucourseid);
1.474 albertel 4938: my $cpart=unpack("%32S*",$part);
1.480 www 4939: my $return =&recprefix($fucourseid).'-';
1.474 albertel 4940: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
4941: $ENV{'request.state'} eq 'construct') {
4942: &Apache::lonxml::debug("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname).
4943: " and ".($cpart%$cudom));
4944:
4945: $return.= ($cunique%$cuname+
4946: $cunique%$cudom+
4947: $cusymb%$cuname+
4948: $cusymb%$cudom+
4949: $cucourseid%$cuname+
4950: $cucourseid%$cudom+
4951: $cpart%$cuname+
4952: $cpart%$cudom);
4953: } else {
4954: $return.= ($cunique%$cuname+
4955: $cunique%$cudom+
4956: $cusymb%$cuname+
4957: $cusymb%$cudom+
4958: $cucourseid%$cuname+
4959: $cucourseid%$cudom);
4960: }
4961: return $return;
1.76 www 4962: }
4963:
4964: sub receipt {
1.474 albertel 4965: my ($part)=@_;
4966: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
4967: return &ireceipt($name,$domain,$courseid,$symb,$part);
1.76 www 4968: }
1.260 ng 4969:
1.36 albertel 4970: # ------------------------------------------------------------ Serves up a file
1.472 albertel 4971: # returns either the contents of the file or
4972: # -1 if the file doesn't exist
1.481 raeburn 4973: #
4974: # if the target is a file that was uploaded via DOCS,
4975: # a check will be made to see if a current copy exists on the local server,
4976: # if it does this will be served, otherwise a copy will be retrieved from
4977: # the home server for the course and stored in /home/httpd/html/userfiles on
4978: # the local server.
1.472 albertel 4979:
1.36 albertel 4980: sub getfile {
1.481 raeburn 4981: my ($file,$caller) = @_;
1.482 albertel 4982:
4983: if ($file !~ m|^/*uploaded/(\w+)/(\w+)/(.+)$|) {
4984: # normal file from res space
1.472 albertel 4985: &repcopy($file);
1.481 raeburn 4986: return &readfile($file);
4987: }
1.482 albertel 4988:
4989: my $info;
4990: my $cdom = $1;
4991: my $cnum = $2;
4992: my $filename = $3;
4993: my $path = $Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles';
4994: my ($lwpresp,$rtncode);
4995: my $localfile = $path.'/'.$cdom.'/'.$cnum.'/'.$filename;
4996: if (-e "$localfile") {
4997: my @fileinfo = stat($localfile);
4998: $lwpresp = &getuploaded('HEAD',$file,$cdom,$cnum,\$info,\$rtncode);
4999: if ($lwpresp ne 'ok') {
5000: if ($rtncode eq '404') {
5001: unlink($localfile);
5002: }
1.517 albertel 5003: #my $ua=new LWP::UserAgent;
5004: #my $request=new HTTP::Request('GET',&tokenwrapper($file));
5005: #my $response=$ua->request($request);
5006: #if ($response->is_success()) {
5007: # return $response->content;
5008: # } else {
5009: # return -1;
5010: # }
1.482 albertel 5011: return -1;
5012: }
5013: if ($info < $fileinfo[9]) {
5014: return &readfile($localfile);
5015: }
5016: $info = '';
5017: $lwpresp = &getuploaded('GET',$file,$cdom,$cnum,\$info,\$rtncode);
5018: if ($lwpresp ne 'ok') {
5019: return -1;
5020: }
5021: } else {
5022: $lwpresp = &getuploaded('GET',$file,$cdom,$cnum,\$info,\$rtncode);
5023: if ($lwpresp ne 'ok') {
1.517 albertel 5024: my $ua=new LWP::UserAgent;
5025: my $request=new HTTP::Request('GET',&tokenwrapper($file));
5026: my $response=$ua->request($request);
5027: if ($response->is_success()) {
5028: return $response->content;
5029: } else {
5030: return -1;
5031: }
1.482 albertel 5032: }
5033: my @parts = ($cdom,$cnum);
5034: if ($filename =~ m|^(.+)/[^/]+$|) {
5035: push @parts, split(/\//,$1);
1.518 albertel 5036: }
1.482 albertel 5037: foreach my $part (@parts) {
5038: $path .= '/'.$part;
5039: if (!-e $path) {
5040: mkdir($path,0770);
5041: }
5042: }
5043: }
5044: open (FILE,">$localfile");
5045: print FILE $info;
5046: close(FILE);
5047: if ($caller eq 'uploadrep') {
5048: return 'ok';
5049: }
5050: return $info;
1.481 raeburn 5051: }
5052:
1.517 albertel 5053: sub tokenwrapper {
5054: my $uri=shift;
5055: $uri=~s/^http\:\/\/([^\/]+)//;
5056: $uri=~s/^\///;
5057: $ENV{'user.environment'}=~/\/([^\/]+)\.id/;
5058: my $token=$1;
5059: if ($uri=~/^uploaded\/([^\/]+)\/([^\/]+)\/([^\/]+)(\?\.*)*$/) {
5060: &appenv('userfile.'.$1.'/'.$2.'/'.$3 => $ENV{'request.course.id'});
5061: return 'http://'.$hostname{ &homeserver($2,$1)}.'/'.$uri.
5062: (($uri=~/\?/)?'&':'?').'token='.$token.
5063: '&tokenissued='.$perlvar{'lonHostID'};
5064: } else {
5065: return '/adm/notfound.html';
5066: }
5067: }
5068:
1.481 raeburn 5069: sub getuploaded {
5070: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
5071: $uri=~s/^\///;
5072: $uri = 'http://'.$hostname{ &homeserver($cnum,$cdom)}.'/raw/'.$uri;
5073: my $ua=new LWP::UserAgent;
5074: my $request=new HTTP::Request($reqtype,$uri);
5075: my $response=$ua->request($request);
5076: $$rtncode = $response->code;
1.482 albertel 5077: if (! $response->is_success()) {
5078: return 'failed';
5079: }
5080: if ($reqtype eq 'HEAD') {
1.486 www 5081: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
1.482 albertel 5082: } elsif ($reqtype eq 'GET') {
5083: $$info = $response->content;
1.472 albertel 5084: }
1.482 albertel 5085: return 'ok';
1.36 albertel 5086: }
5087:
1.481 raeburn 5088: sub readfile {
5089: my $file = shift;
5090: if ( (! -e $file ) || ($file eq '') ) { return -1; };
5091: my $fh;
5092: open($fh,"<$file");
5093: my $a='';
5094: while (<$fh>) { $a .=$_; }
5095: return $a;
5096: }
5097:
1.36 albertel 5098: sub filelocation {
5099: my ($dir,$file) = @_;
5100: my $location;
5101: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1.59 albertel 5102: if ($file=~m:^/~:) { # is a contruction space reference
5103: $location = $file;
5104: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.270 www 5105: } elsif ($file=~/^\/*uploaded/) { # is an uploaded file
5106: $location=$file;
1.36 albertel 5107: } else {
1.479 albertel 5108: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
1.464 albertel 5109: $file=~s:^/res/:/:;
1.59 albertel 5110: if ( !( $file =~ m:^/:) ) {
5111: $location = $dir. '/'.$file;
5112: } else {
5113: $location = '/home/httpd/html/res'.$file;
5114: }
1.36 albertel 5115: }
5116: $location=~s://+:/:g; # remove duplicate /
1.46 www 5117: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
1.475 albertel 5118: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
1.46 www 5119: return $location;
5120: }
1.36 albertel 5121:
1.46 www 5122: sub hreflocation {
5123: my ($dir,$file)=@_;
1.460 albertel 5124: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
5125: my $finalpath=filelocation($dir,$file);
5126: $finalpath=~s-^/home/httpd/html--;
1.462 albertel 5127: $finalpath=~s-^/home/(\w+)/public_html/-/~$1/-;
1.460 albertel 5128: return $finalpath;
5129: } elsif ($file=~m-^/home-) {
5130: $file=~s-^/home/httpd/html--;
1.462 albertel 5131: $file=~s-^/home/(\w+)/public_html/-/~$1/-;
1.460 albertel 5132: return $file;
1.46 www 5133: }
1.462 albertel 5134: return $file;
1.465 albertel 5135: }
5136:
5137: sub current_machine_domains {
5138: my $hostname=$hostname{$perlvar{'lonHostID'}};
5139: my @domains;
5140: while( my($id, $name) = each(%hostname)) {
1.467 matthew 5141: # &logthis("-$id-$name-$hostname-");
1.465 albertel 5142: if ($hostname eq $name) {
5143: push(@domains,$hostdom{$id});
5144: }
5145: }
5146: return @domains;
5147: }
5148:
5149: sub current_machine_ids {
5150: my $hostname=$hostname{$perlvar{'lonHostID'}};
5151: my @ids;
5152: while( my($id, $name) = each(%hostname)) {
1.467 matthew 5153: # &logthis("-$id-$name-$hostname-");
1.465 albertel 5154: if ($hostname eq $name) {
5155: push(@ids,$id);
5156: }
5157: }
5158: return @ids;
1.31 www 5159: }
5160:
5161: # ------------------------------------------------------------- Declutters URLs
5162:
5163: sub declutter {
5164: my $thisfn=shift;
1.479 albertel 5165: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
1.31 www 5166: $thisfn=~s/^\///;
5167: $thisfn=~s/^res\///;
1.235 www 5168: $thisfn=~s/\?.+$//;
1.268 www 5169: return $thisfn;
5170: }
5171:
5172: # ------------------------------------------------------------- Clutter up URLs
5173:
5174: sub clutter {
5175: my $thisfn='/'.&declutter(shift);
1.509 albertel 5176: unless ($thisfn=~/^\/(uploaded|adm|userfiles|ext|raw|priv|public)\//) {
1.270 www 5177: $thisfn='/res'.$thisfn;
5178: }
1.31 www 5179: return $thisfn;
1.12 www 5180: }
5181:
5182: # -------------------------------------------------------- Escape Special Chars
5183:
5184: sub escape {
5185: my $str=shift;
5186: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
5187: return $str;
5188: }
5189:
5190: # ----------------------------------------------------- Un-Escape Special Chars
5191:
5192: sub unescape {
5193: my $str=shift;
5194: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
5195: return $str;
5196: }
1.11 www 5197:
1.415 albertel 5198: sub mod_perl_version {
5199: if (defined($perlvar{'MODPERL2'})) {
5200: return 2;
5201: }
5202: return 1;
1.436 albertel 5203: }
5204:
5205: sub correct_line_ends {
5206: my ($result)=@_;
5207: $$result =~s/\r\n/\n/mg;
5208: $$result =~s/\r/\n/mg;
1.415 albertel 5209: }
1.1 albertel 5210: # ================================================================ Main Program
5211:
1.184 www 5212: sub goodbye {
1.204 albertel 5213: &logthis("Starting Shut down");
1.443 albertel 5214: #not converted to using infrastruture and probably shouldn't be
1.425 albertel 5215: &logthis(sprintf("%-20s is %s",'%badServerCache',scalar(%badServerCache)));
1.443 albertel 5216: #converted
1.425 albertel 5217: &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
1.443 albertel 5218: &logthis(sprintf("%-20s is %s",'%homecache',scalar(%homecache)));
1.425 albertel 5219: &logthis(sprintf("%-20s is %s",'%titlecache',scalar(%titlecache)));
5220: &logthis(sprintf("%-20s is %s",'%courseresdatacache',scalar(%courseresdatacache)));
5221: #1.1 only
5222: &logthis(sprintf("%-20s is %s",'%userresdatacache',scalar(%userresdatacache)));
5223: &logthis(sprintf("%-20s is %s",'%usectioncache',scalar(%usectioncache)));
1.440 www 5224: &logthis(sprintf("%-20s is %s",'%courseresversioncache',scalar(%courseresversioncache)));
5225: &logthis(sprintf("%-20s is %s",'%resversioncache',scalar(%resversioncache)));
1.184 www 5226: &flushcourselogs();
5227: &logthis("Shutting down");
1.362 albertel 5228: return DONE;
1.184 www 5229: }
5230:
1.179 www 5231: BEGIN {
1.228 harris41 5232: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
1.195 www 5233: unless ($readit) {
1.217 harris41 5234: {
1.448 albertel 5235: open(my $config,"</etc/httpd/conf/loncapa.conf");
1.217 harris41 5236:
5237: while (my $configline=<$config>) {
1.484 albertel 5238: if ($configline=~/\S/ && $configline =~ /^[^\#]*PerlSetVar/) {
1.1 albertel 5239: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 5240: chomp($varvalue);
1.1 albertel 5241: $perlvar{$varname}=$varvalue;
5242: }
5243: }
1.448 albertel 5244: close($config);
1.1 albertel 5245: }
1.227 harris41 5246: {
1.448 albertel 5247: open(my $config,"</etc/httpd/conf/loncapa_apache.conf");
1.227 harris41 5248:
5249: while (my $configline=<$config>) {
5250: if ($configline =~ /^[^\#]*PerlSetVar/) {
5251: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
5252: chomp($varvalue);
5253: $perlvar{$varname}=$varvalue;
5254: }
5255: }
1.448 albertel 5256: close($config);
1.227 harris41 5257: }
1.1 albertel 5258:
1.327 albertel 5259: # ------------------------------------------------------------ Read domain file
5260: {
5261: %domaindescription = ();
5262: %domain_auth_def = ();
5263: %domain_auth_arg_def = ();
1.448 albertel 5264: my $fh;
5265: if (open($fh,"<".$Apache::lonnet::perlvar{'lonTabDir'}.'/domain.tab')) {
1.327 albertel 5266: while (<$fh>) {
1.390 matthew 5267: next if (/^(\#|\s*$)/);
5268: # next if /^\#/;
1.327 albertel 5269: chomp;
1.403 www 5270: my ($domain, $domain_description, $def_auth, $def_auth_arg,
5271: $def_lang, $city, $longi, $lati) = split(/:/,$_);
5272: $domain_auth_def{$domain}=$def_auth;
1.327 albertel 5273: $domain_auth_arg_def{$domain}=$def_auth_arg;
1.403 www 5274: $domaindescription{$domain}=$domain_description;
5275: $domain_lang_def{$domain}=$def_lang;
5276: $domain_city{$domain}=$city;
5277: $domain_longi{$domain}=$longi;
5278: $domain_lati{$domain}=$lati;
5279:
1.448 albertel 5280: # &logthis("Domain.tab: $domain, $domain_auth_def{$domain}, $domain_auth_arg_def{$domain},$domaindescription{$domain}");
1.327 albertel 5281: # &logthis("Domain.tab: $domain ".$domaindescription{$domain} );
1.448 albertel 5282: }
1.327 albertel 5283: }
1.448 albertel 5284: close ($fh);
1.327 albertel 5285: }
5286:
5287:
1.1 albertel 5288: # ------------------------------------------------------------- Read hosts file
5289: {
1.448 albertel 5290: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
1.1 albertel 5291:
5292: while (my $configline=<$config>) {
1.303 matthew 5293: next if ($configline =~ /^(\#|\s*$)/);
1.154 www 5294: chomp($configline);
1.245 www 5295: my ($id,$domain,$role,$name,$ip,$domdescr)=split(/:/,$configline);
1.252 albertel 5296: if ($id && $domain && $role && $name && $ip) {
5297: $hostname{$id}=$name;
5298: $hostdom{$id}=$domain;
5299: $hostip{$id}=$ip;
1.300 albertel 5300: $iphost{$ip}=$id;
1.252 albertel 5301: if ($role eq 'library') { $libserv{$id}=$name; }
5302: } else {
5303: if ($configline) {
5304: &logthis("Skipping hosts.tab line -$configline-");
5305: }
1.245 www 5306: }
1.1 albertel 5307: }
1.448 albertel 5308: close($config);
1.1 albertel 5309: }
5310:
5311: # ------------------------------------------------------ Read spare server file
5312: {
1.448 albertel 5313: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
1.1 albertel 5314:
5315: while (my $configline=<$config>) {
5316: chomp($configline);
1.284 matthew 5317: if ($configline) {
1.1 albertel 5318: $spareid{$configline}=1;
5319: }
5320: }
1.448 albertel 5321: close($config);
1.1 albertel 5322: }
1.11 www 5323: # ------------------------------------------------------------ Read permissions
5324: {
1.448 albertel 5325: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
1.11 www 5326:
5327: while (my $configline=<$config>) {
1.448 albertel 5328: chomp($configline);
5329: if ($configline) {
5330: my ($role,$perm)=split(/ /,$configline);
5331: if ($perm ne '') { $pr{$role}=$perm; }
5332: }
1.11 www 5333: }
1.448 albertel 5334: close($config);
1.11 www 5335: }
5336:
5337: # -------------------------------------------- Read plain texts for permissions
5338: {
1.448 albertel 5339: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
1.11 www 5340:
5341: while (my $configline=<$config>) {
1.448 albertel 5342: chomp($configline);
5343: if ($configline) {
5344: my ($short,$plain)=split(/:/,$configline);
5345: if ($plain ne '') { $prp{$short}=$plain; }
5346: }
1.135 www 5347: }
1.448 albertel 5348: close($config);
1.135 www 5349: }
5350:
5351: # ---------------------------------------------------------- Read package table
5352: {
1.448 albertel 5353: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
1.135 www 5354:
5355: while (my $configline=<$config>) {
1.483 albertel 5356: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
1.448 albertel 5357: chomp($configline);
5358: my ($short,$plain)=split(/:/,$configline);
5359: my ($pack,$name)=split(/\&/,$short);
5360: if ($plain ne '') {
5361: $packagetab{$pack.'&'.$name.'&name'}=$name;
5362: $packagetab{$short}=$plain;
5363: }
1.11 www 5364: }
1.448 albertel 5365: close($config);
1.329 matthew 5366: }
5367:
5368: # ------------- set up temporary directory
5369: {
5370: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
5371:
1.11 www 5372: }
5373:
1.71 www 5374: %metacache=();
1.185 www 5375:
1.281 www 5376: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
1.186 www 5377: $dumpcount=0;
1.22 www 5378:
1.163 harris41 5379: &logtouch();
1.12 www 5380: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.195 www 5381: $readit=1;
5382: }
1.1 albertel 5383: }
1.179 www 5384:
1.1 albertel 5385: 1;
1.191 harris41 5386: __END__
5387:
1.243 albertel 5388: =pod
5389:
1.191 harris41 5390: =head1 NAME
5391:
1.243 albertel 5392: Apache::lonnet - Subroutines to ask questions about things in the network.
1.191 harris41 5393:
5394: =head1 SYNOPSIS
5395:
1.243 albertel 5396: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
1.191 harris41 5397:
5398: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
5399:
1.243 albertel 5400: Common parameters:
5401:
5402: =over 4
5403:
5404: =item *
5405:
5406: $uname : an internal username (if $cname expecting a course Id specifically)
5407:
5408: =item *
5409:
5410: $udom : a domain (if $cdom expecting a course's domain specifically)
5411:
5412: =item *
5413:
5414: $symb : a resource instance identifier
5415:
5416: =item *
5417:
5418: $namespace : the name of a .db file that contains the data needed or
5419: being set.
5420:
5421: =back
5422:
1.394 bowersj2 5423: =head1 OVERVIEW
1.191 harris41 5424:
1.394 bowersj2 5425: lonnet provides subroutines which interact with the
5426: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
5427: about classes, users, and resources.
1.243 albertel 5428:
5429: For many of these objects you can also use this to store data about
5430: them or modify them in various ways.
1.191 harris41 5431:
1.394 bowersj2 5432: =head2 Symbs
1.191 harris41 5433:
1.394 bowersj2 5434: To identify a specific instance of a resource, LON-CAPA uses symbols
5435: or "symbs"X<symb>. These identifiers are built from the URL of the
5436: map, the resource number of the resource in the map, and the URL of
5437: the resource itself. The latter is somewhat redundant, but might help
5438: if maps change.
5439:
5440: An example is
5441:
5442: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
5443:
5444: The respective map entry is
5445:
5446: <resource id="19" src="/res/msu/korte/tests/part12.problem"
5447: title="Problem 2">
5448: </resource>
5449:
5450: Symbs are used by the random number generator, as well as to store and
5451: restore data specific to a certain instance of for example a problem.
5452:
5453: =head2 Storing And Retrieving Data
5454:
5455: X<store()>X<cstore()>X<restore()>Three of the most important functions
5456: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
5457: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
5458: is is the non-critical message twin of cstore. These functions are for
5459: handlers to store a perl hash to a user's permanent data space in an
5460: easy manner, and to retrieve it again on another call. It is expected
5461: that a handler would use this once at the beginning to retrieve data,
5462: and then again once at the end to send only the new data back.
5463:
5464: The data is stored in the user's data directory on the user's
5465: homeserver under the ID of the course.
5466:
5467: The hash that is returned by restore will have all of the previous
5468: value for all of the elements of the hash.
5469:
5470: Example:
5471:
5472: #creating a hash
5473: my %hash;
5474: $hash{'foo'}='bar';
5475:
5476: #storing it
5477: &Apache::lonnet::cstore(\%hash);
5478:
5479: #changing a value
5480: $hash{'foo'}='notbar';
5481:
5482: #adding a new value
5483: $hash{'bar'}='foo';
5484: &Apache::lonnet::cstore(\%hash);
5485:
5486: #retrieving the hash
5487: my %history=&Apache::lonnet::restore();
5488:
5489: #print the hash
5490: foreach my $key (sort(keys(%history))) {
5491: print("\%history{$key} = $history{$key}");
5492: }
5493:
5494: Will print out:
1.191 harris41 5495:
1.394 bowersj2 5496: %history{1:foo} = bar
5497: %history{1:keys} = foo:timestamp
5498: %history{1:timestamp} = 990455579
5499: %history{2:bar} = foo
5500: %history{2:foo} = notbar
5501: %history{2:keys} = foo:bar:timestamp
5502: %history{2:timestamp} = 990455580
5503: %history{bar} = foo
5504: %history{foo} = notbar
5505: %history{timestamp} = 990455580
5506: %history{version} = 2
5507:
5508: Note that the special hash entries C<keys>, C<version> and
5509: C<timestamp> were added to the hash. C<version> will be equal to the
5510: total number of versions of the data that have been stored. The
5511: C<timestamp> attribute will be the UNIX time the hash was
5512: stored. C<keys> is available in every historical section to list which
5513: keys were added or changed at a specific historical revision of a
5514: hash.
5515:
5516: B<Warning>: do not store the hash that restore returns directly. This
5517: will cause a mess since it will restore the historical keys as if the
5518: were new keys. I.E. 1:foo will become 1:1:foo etc.
1.191 harris41 5519:
1.394 bowersj2 5520: Calling convention:
1.191 harris41 5521:
1.394 bowersj2 5522: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
5523: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
1.191 harris41 5524:
1.394 bowersj2 5525: For more detailed information, see lonnet specific documentation.
1.191 harris41 5526:
1.394 bowersj2 5527: =head1 RETURN MESSAGES
1.191 harris41 5528:
1.394 bowersj2 5529: =over 4
1.191 harris41 5530:
1.394 bowersj2 5531: =item * B<con_lost>: unable to contact remote host
1.191 harris41 5532:
1.394 bowersj2 5533: =item * B<con_delayed>: unable to contact remote host, message will be delivered
5534: when the connection is brought back up
1.191 harris41 5535:
1.394 bowersj2 5536: =item * B<con_failed>: unable to contact remote host and unable to save message
5537: for later delivery
1.191 harris41 5538:
1.394 bowersj2 5539: =item * B<error:>: an error a occured, a description of the error follows the :
1.191 harris41 5540:
1.394 bowersj2 5541: =item * B<no_such_host>: unable to fund a host associated with the user/domain
1.243 albertel 5542: that was requested
1.191 harris41 5543:
1.243 albertel 5544: =back
1.191 harris41 5545:
1.243 albertel 5546: =head1 PUBLIC SUBROUTINES
1.191 harris41 5547:
1.243 albertel 5548: =head2 Session Environment Functions
1.191 harris41 5549:
1.243 albertel 5550: =over 4
1.191 harris41 5551:
1.394 bowersj2 5552: =item *
5553: X<appenv()>
5554: B<appenv(%hash)>: the value of %hash is written to
5555: the user envirnoment file, and will be restored for each access this
5556: user makes during this session, also modifies the %ENV for the current
5557: process
1.191 harris41 5558:
5559: =item *
1.394 bowersj2 5560: X<delenv()>
5561: B<delenv($regexp)>: removes all items from the session
5562: environment file that matches the regular expression in $regexp. The
5563: values are also delted from the current processes %ENV.
1.191 harris41 5564:
1.243 albertel 5565: =back
5566:
5567: =head2 User Information
1.191 harris41 5568:
1.243 albertel 5569: =over 4
1.191 harris41 5570:
5571: =item *
1.394 bowersj2 5572: X<queryauthenticate()>
5573: B<queryauthenticate($uname,$udom)>: try to determine user's current
1.191 harris41 5574: authentication scheme
5575:
5576: =item *
1.394 bowersj2 5577: X<authenticate()>
5578: B<authenticate($uname,$upass,$udom)>: try to
5579: authenticate user from domain's lib servers (first use the current
5580: one). C<$upass> should be the users password.
1.191 harris41 5581:
5582: =item *
1.394 bowersj2 5583: X<homeserver()>
5584: B<homeserver($uname,$udom)>: find the server which has
5585: the user's directory and files (there must be only one), this caches
5586: the answer, and also caches if there is a borken connection.
1.191 harris41 5587:
5588: =item *
1.394 bowersj2 5589: X<idget()>
5590: B<idget($udom,@ids)>: find the usernames behind a list of IDs
5591: (IDs are a unique resource in a domain, there must be only 1 ID per
5592: username, and only 1 username per ID in a specific domain) (returns
5593: hash: id=>name,id=>name)
1.191 harris41 5594:
5595: =item *
1.394 bowersj2 5596: X<idrget()>
5597: B<idrget($udom,@unames)>: find the IDs behind a list of
5598: usernames (returns hash: name=>id,name=>id)
1.191 harris41 5599:
5600: =item *
1.394 bowersj2 5601: X<idput()>
5602: B<idput($udom,%ids)>: store away a list of names and associated IDs
1.191 harris41 5603:
5604: =item *
1.394 bowersj2 5605: X<rolesinit()>
5606: B<rolesinit($udom,$username,$authhost)>: get user privileges
1.243 albertel 5607:
5608: =item *
1.394 bowersj2 5609: X<usection()>
5610: B<usection($udom,$uname,$cname)>: finds the section of student in the
1.243 albertel 5611: course $cname, return section name/number or '' for "not in course"
5612: and '-1' for "no section"
5613:
5614: =item *
1.394 bowersj2 5615: X<userenvironment()>
5616: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
1.243 albertel 5617: passed in @what from the requested user's environment, returns a hash
5618:
5619: =back
5620:
5621: =head2 User Roles
5622:
5623: =over 4
5624:
5625: =item *
5626:
5627: allowed($priv,$uri) : check for a user privilege; returns codes for allowed
5628: actions
5629: F: full access
5630: U,I,K: authentication modes (cxx only)
5631: '': forbidden
5632: 1: user needs to choose course
5633: 2: browse allowed
5634:
5635: =item *
5636:
5637: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
5638: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
5639: and course level
5640:
5641: =item *
5642:
5643: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
5644: explanation of a user role term
5645:
5646: =back
5647:
5648: =head2 User Modification
5649:
5650: =over 4
5651:
5652: =item *
5653:
5654: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
5655: user for the level given by URL. Optional start and end dates (leave empty
5656: string or zero for "no date")
1.191 harris41 5657:
5658: =item *
5659:
1.243 albertel 5660: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
5661: change a users, password, possible return values are: ok,
5662: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
5663: refused
1.191 harris41 5664:
5665: =item *
5666:
1.243 albertel 5667: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
1.191 harris41 5668:
5669: =item *
5670:
1.243 albertel 5671: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
5672: modify user
1.191 harris41 5673:
5674: =item *
5675:
1.286 matthew 5676: modifystudent
5677:
5678: modify a students enrollment and identification information.
5679: The course id is resolved based on the current users environment.
5680: This means the envoking user must be a course coordinator or otherwise
5681: associated with a course.
5682:
1.297 matthew 5683: This call is essentially a wrapper for lonnet::modifyuser and
5684: lonnet::modify_student_enrollment
1.286 matthew 5685:
5686: Inputs:
5687:
5688: =over 4
5689:
5690: =item B<$udom> Students loncapa domain
5691:
5692: =item B<$uname> Students loncapa login name
5693:
5694: =item B<$uid> Students id/student number
5695:
5696: =item B<$umode> Students authentication mode
5697:
5698: =item B<$upass> Students password
5699:
5700: =item B<$first> Students first name
5701:
5702: =item B<$middle> Students middle name
5703:
5704: =item B<$last> Students last name
5705:
5706: =item B<$gene> Students generation
5707:
5708: =item B<$usec> Students section in course
5709:
5710: =item B<$end> Unix time of the roles expiration
5711:
5712: =item B<$start> Unix time of the roles start date
5713:
5714: =item B<$forceid> If defined, allow $uid to be changed
5715:
5716: =item B<$desiredhome> server to use as home server for student
5717:
5718: =back
1.297 matthew 5719:
5720: =item *
5721:
5722: modify_student_enrollment
5723:
5724: Change a students enrollment status in a class. The environment variable
5725: 'role.request.course' must be defined for this function to proceed.
5726:
5727: Inputs:
5728:
5729: =over 4
5730:
5731: =item $udom, students domain
5732:
5733: =item $uname, students name
5734:
5735: =item $uid, students user id
5736:
5737: =item $first, students first name
5738:
5739: =item $middle
5740:
5741: =item $last
5742:
5743: =item $gene
5744:
5745: =item $usec
5746:
5747: =item $end
5748:
5749: =item $start
5750:
5751: =back
5752:
1.191 harris41 5753:
5754: =item *
5755:
1.243 albertel 5756: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
5757: custom role; give a custom role to a user for the level given by URL. Specify
5758: name and domain of role author, and role name
1.191 harris41 5759:
5760: =item *
5761:
1.243 albertel 5762: revokerole($udom,$uname,$url,$role) : revoke a role for url
1.191 harris41 5763:
5764: =item *
5765:
1.243 albertel 5766: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
5767:
5768: =back
5769:
5770: =head2 Course Infomation
5771:
5772: =over 4
1.191 harris41 5773:
5774: =item *
5775:
1.243 albertel 5776: coursedescription($courseid) : course description
1.191 harris41 5777:
5778: =item *
5779:
1.243 albertel 5780: courseresdata($coursenum,$coursedomain,@which) : request for current
5781: parameter setting for a specific course, @what should be a list of
5782: parameters to ask about. This routine caches answers for 5 minutes.
5783:
5784: =back
5785:
5786: =head2 Course Modification
5787:
5788: =over 4
1.191 harris41 5789:
5790: =item *
5791:
1.243 albertel 5792: writecoursepref($courseid,%prefs) : write preferences (environment
5793: database) for a course
1.191 harris41 5794:
5795: =item *
5796:
1.243 albertel 5797: createcourse($udom,$description,$url) : make/modify course
5798:
5799: =back
5800:
5801: =head2 Resource Subroutines
5802:
5803: =over 4
1.191 harris41 5804:
5805: =item *
5806:
1.243 albertel 5807: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
1.191 harris41 5808:
5809: =item *
5810:
1.243 albertel 5811: repcopy($filename) : subscribes to the requested file, and attempts to
5812: replicate from the owning library server, Might return
5813: HTTP_SERVICE_UNAVAILABLE, HTTP_NOT_FOUND, FORBIDDEN, OK, or
5814: HTTP_BAD_REQUEST, also attempts to grab the metadata for the
5815: resource. Expects the local filesystem pathname
5816: (/home/httpd/html/res/....)
5817:
5818: =back
5819:
5820: =head2 Resource Information
5821:
5822: =over 4
1.191 harris41 5823:
5824: =item *
5825:
1.243 albertel 5826: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
5827: a vairety of different possible values, $varname should be a request
5828: string, and the other parameters can be used to specify who and what
5829: one is asking about.
5830:
5831: Possible values for $varname are environment.lastname (or other item
5832: from the envirnment hash), user.name (or someother aspect about the
5833: user), resource.0.maxtries (or some other part and parameter of a
5834: resource)
1.204 albertel 5835:
5836: =item *
5837:
1.243 albertel 5838: directcondval($number) : get current value of a condition; reads from a state
5839: string
1.204 albertel 5840:
5841: =item *
5842:
1.243 albertel 5843: condval($condidx) : value of condition index based on state
1.204 albertel 5844:
5845: =item *
5846:
1.243 albertel 5847: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
5848: resource's metadata, $what should be either a specific key, or either
5849: 'keys' (to get a list of possible keys) or 'packages' to get a list of
5850: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
5851:
5852: this function automatically caches all requests
1.191 harris41 5853:
5854: =item *
5855:
1.243 albertel 5856: metadata_query($query,$custom,$customshow) : make a metadata query against the
5857: network of library servers; returns file handle of where SQL and regex results
5858: will be stored for query
1.191 harris41 5859:
5860: =item *
5861:
1.243 albertel 5862: symbread($filename) : return symbolic list entry (filename argument optional);
5863: returns the data handle
1.191 harris41 5864:
5865: =item *
5866:
1.243 albertel 5867: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
5868: a possible symb for the URL in $thisfn, returns a 1 on success, 0 on
5869: failure, user must be in a course, as it assumes the existance of the
5870: course initi hash, and uses $ENV('request.course.id'}
5871:
1.191 harris41 5872:
5873: =item *
5874:
1.243 albertel 5875: symbclean($symb) : removes versions numbers from a symb, returns the
5876: cleaned symb
1.191 harris41 5877:
5878: =item *
5879:
1.243 albertel 5880: is_on_map($uri) : checks if the $uri is somewhere on the current
5881: course map, user must be in a course for it to work.
1.191 harris41 5882:
5883: =item *
5884:
1.243 albertel 5885: numval($salt) : return random seed value (addend for rndseed)
1.191 harris41 5886:
5887: =item *
5888:
1.243 albertel 5889: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
5890: a random seed, all arguments are optional, if they aren't sent it uses the
5891: environment to derive them. Note: if symb isn't sent and it can't get one
5892: from &symbread it will use the current time as its return value
1.191 harris41 5893:
5894: =item *
5895:
1.243 albertel 5896: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
5897: unfakeable, receipt
1.191 harris41 5898:
5899: =item *
5900:
1.243 albertel 5901: receipt() : API to ireceipt working off of ENV values; given out to users
1.191 harris41 5902:
5903: =item *
5904:
1.243 albertel 5905: countacc($url) : count the number of accesses to a given URL
1.191 harris41 5906:
5907: =item *
5908:
1.243 albertel 5909: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
1.191 harris41 5910:
5911: =item *
5912:
1.243 albertel 5913: checkin($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 $tcrsid)
1.191 harris41 5914:
5915: =item *
5916:
1.243 albertel 5917: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
1.191 harris41 5918:
5919: =item *
5920:
1.243 albertel 5921: devalidate($symb) : devalidate temporary spreadsheet calculations,
5922: forcing spreadsheet to reevaluate the resource scores next time.
5923:
5924: =back
5925:
5926: =head2 Storing/Retreiving Data
5927:
5928: =over 4
1.191 harris41 5929:
5930: =item *
5931:
1.243 albertel 5932: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
5933: for this url; hashref needs to be given and should be a \%hashname; the
5934: remaining args aren't required and if they aren't passed or are '' they will
5935: be derived from the ENV
1.191 harris41 5936:
5937: =item *
5938:
1.243 albertel 5939: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
5940: uses critical subroutine
1.191 harris41 5941:
5942: =item *
5943:
1.243 albertel 5944: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
5945: all args are optional
1.191 harris41 5946:
5947: =item *
5948:
1.243 albertel 5949: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
5950: works very similar to store/cstore, but all data is stored in a
5951: temporary location and can be reset using tmpreset, $storehash should
5952: be a hash reference, returns nothing on success
1.191 harris41 5953:
5954: =item *
5955:
1.243 albertel 5956: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
5957: similar to restore, but all data is stored in a temporary location and
5958: can be reset using tmpreset. Returns a hash of values on success,
5959: error string otherwise.
1.191 harris41 5960:
5961: =item *
5962:
1.243 albertel 5963: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
5964: deltes all keys for $symb form the temporary storage hash.
1.191 harris41 5965:
5966: =item *
5967:
1.243 albertel 5968: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
5969: reference filled in from namesp ($udom and $uname are optional)
1.191 harris41 5970:
5971: =item *
5972:
1.243 albertel 5973: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
5974: namesp ($udom and $uname are optional)
1.191 harris41 5975:
5976: =item *
5977:
1.243 albertel 5978: dump($namespace,$udom,$uname,$regexp) :
5979: dumps the complete (or key matching regexp) namespace into a hash
5980: ($udom, $uname and $regexp are optional)
1.449 matthew 5981:
5982: =item *
5983:
5984: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
5985: $store can be a scalar, an array reference, or if the amount to be
5986: incremented is > 1, a hash reference.
5987:
5988: ($udom and $uname are optional)
1.191 harris41 5989:
5990: =item *
5991:
1.243 albertel 5992: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
5993: ($udom and $uname are optional)
1.191 harris41 5994:
5995: =item *
5996:
1.243 albertel 5997: cput($namespace,$storehash,$udom,$uname) : critical put
5998: ($udom and $uname are optional)
1.191 harris41 5999:
6000: =item *
6001:
1.243 albertel 6002: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
6003: reference filled in from namesp (encrypts the return communication)
6004: ($udom and $uname are optional)
1.191 harris41 6005:
6006: =item *
6007:
1.243 albertel 6008: log($udom,$name,$home,$message) : write to permanent log for user; use
6009: critical subroutine
6010:
6011: =back
6012:
6013: =head2 Network Status Functions
6014:
6015: =over 4
1.191 harris41 6016:
6017: =item *
6018:
6019: dirlist($uri) : return directory list based on URI
6020:
6021: =item *
6022:
1.243 albertel 6023: spareserver() : find server with least workload from spare.tab
6024:
6025: =back
6026:
6027: =head2 Apache Request
6028:
6029: =over 4
1.191 harris41 6030:
6031: =item *
6032:
1.243 albertel 6033: ssi($url,%hash) : server side include, does a complete request cycle on url to
6034: localhost, posts hash
6035:
6036: =back
6037:
6038: =head2 Data to String to Data
6039:
6040: =over 4
1.191 harris41 6041:
6042: =item *
6043:
1.243 albertel 6044: hash2str(%hash) : convert a hash into a string complete with escaping and '='
6045: and '&' separators, supports elements that are arrayrefs and hashrefs
1.191 harris41 6046:
6047: =item *
6048:
1.243 albertel 6049: hashref2str($hashref) : convert a hashref into a string complete with
6050: escaping and '=' and '&' separators, supports elements that are
6051: arrayrefs and hashrefs
1.191 harris41 6052:
6053: =item *
6054:
1.243 albertel 6055: arrayref2str($arrayref) : convert an arrayref into a string complete
6056: with escaping and '&' separators, supports elements that are arrayrefs
6057: and hashrefs
1.191 harris41 6058:
6059: =item *
6060:
1.243 albertel 6061: str2hash($string) : convert string to hash using unescaping and
6062: splitting on '=' and '&', supports elements that are arrayrefs and
6063: hashrefs
1.191 harris41 6064:
6065: =item *
6066:
1.243 albertel 6067: str2array($string) : convert string to hash using unescaping and
6068: splitting on '&', supports elements that are arrayrefs and hashrefs
6069:
6070: =back
6071:
6072: =head2 Logging Routines
6073:
6074: =over 4
6075:
6076: These routines allow one to make log messages in the lonnet.log and
6077: lonnet.perm logfiles.
1.191 harris41 6078:
6079: =item *
6080:
1.243 albertel 6081: logtouch() : make sure the logfile, lonnet.log, exists
1.191 harris41 6082:
6083: =item *
6084:
1.243 albertel 6085: logthis() : append message to the normal lonnet.log file, it gets
6086: preiodically rolled over and deleted.
1.191 harris41 6087:
6088: =item *
6089:
1.243 albertel 6090: logperm() : append a permanent message to lonnet.perm.log, this log
6091: file never gets deleted by any automated portion of the system, only
6092: messages of critical importance should go in here.
6093:
6094: =back
6095:
6096: =head2 General File Helper Routines
6097:
6098: =over 4
1.191 harris41 6099:
6100: =item *
6101:
1.481 raeburn 6102: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
6103: (a) files in /uploaded
6104: (i) If a local copy of the file exists -
6105: compares modification date of local copy with last-modified date for
6106: definitive version stored on home server for course. If local copy is
6107: stale, requests a new version from the home server and stores it.
6108: If the original has been removed from the home server, then local copy
6109: is unlinked.
6110: (ii) If local copy does not exist -
6111: requests the file from the home server and stores it.
6112:
6113: If $caller is 'uploadrep':
6114: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
6115: for request for files originally uploaded via DOCS.
6116: - returns 'ok' if fresh local copy now available, -1 otherwise.
6117:
6118: Otherwise:
6119: This indicates a call from the content generation phase of the request.
6120: - returns the entire contents of the file or -1.
6121:
6122: (b) files in /res
6123: - returns the entire contents of a file or -1;
6124: it properly subscribes to and replicates the file if neccessary.
1.191 harris41 6125:
6126: =item *
6127:
1.243 albertel 6128: filelocation($dir,$file) : returns file system location of a file
6129: based on URI; meant to be "fairly clean" absolute reference, $dir is a
6130: directory that relative $file lookups are to looked in ($dir of /a/dir
6131: and a file of ../bob will become /a/bob)
1.191 harris41 6132:
6133: =item *
6134:
6135: hreflocation($dir,$file) : returns file system location or a URL; same as
6136: filelocation except for hrefs
6137:
6138: =item *
6139:
6140: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
6141:
1.243 albertel 6142: =back
6143:
6144: =head2 HTTP Helper Routines
6145:
6146: =over 4
6147:
1.191 harris41 6148: =item *
6149:
6150: escape() : unpack non-word characters into CGI-compatible hex codes
6151:
6152: =item *
6153:
6154: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
6155:
1.243 albertel 6156: =back
6157:
6158: =head1 PRIVATE SUBROUTINES
6159:
6160: =head2 Underlying communication routines (Shouldn't call)
6161:
6162: =over 4
6163:
6164: =item *
6165:
6166: subreply() : tries to pass a message to lonc, returns con_lost if incapable
6167:
6168: =item *
6169:
6170: reply() : uses subreply to send a message to remote machine, logs all failures
6171:
6172: =item *
6173:
6174: critical() : passes a critical message to another server; if cannot
6175: get through then place message in connection buffer directory and
6176: returns con_delayed, if incapable of saving message, returns
6177: con_failed
6178:
6179: =item *
6180:
6181: reconlonc() : tries to reconnect lonc client processes.
6182:
6183: =back
6184:
6185: =head2 Resource Access Logging
6186:
6187: =over 4
6188:
6189: =item *
6190:
6191: flushcourselogs() : flush (save) buffer logs and access logs
6192:
6193: =item *
6194:
6195: courselog($what) : save message for course in hash
6196:
6197: =item *
6198:
6199: courseacclog($what) : save message for course using &courselog(). Perform
6200: special processing for specific resource types (problems, exams, quizzes, etc).
6201:
1.191 harris41 6202: =item *
6203:
6204: goodbye() : flush course logs and log shutting down; it is called in srm.conf
6205: as a PerlChildExitHandler
1.243 albertel 6206:
6207: =back
6208:
6209: =head2 Other
6210:
6211: =over 4
6212:
6213: =item *
6214:
6215: symblist($mapname,%newhash) : update symbolic storage links
1.191 harris41 6216:
6217: =back
6218:
6219: =cut
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