Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.523.2.10
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
1.523.2.10! albertel 4: # $Id: lonnet.pm,v 1.523.2.9 2004/11/06 01:14:05 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;
1.523.2.10! albertel 55: my $_64bit=0;
1.1 albertel 56:
1.449 matthew 57: =pod
58:
59: =head1 Package Variables
60:
61: These are largely undocumented, so if you decipher one please note it here.
62:
63: =over 4
64:
65: =item $processmarker
66:
67: Contains the time this process was started and this servers host id.
68:
69: =item $dumpcount
70:
71: Counts the number of times a message log flush has been attempted (regardless
72: of success) by this process. Used as part of the filename when messages are
73: delayed.
74:
75: =back
76:
77: =cut
78:
79:
1.1 albertel 80: # --------------------------------------------------------------------- Logging
81:
1.163 harris41 82: sub logtouch {
83: my $execdir=$perlvar{'lonDaemons'};
1.448 albertel 84: unless (-e "$execdir/logs/lonnet.log") {
85: open(my $fh,">>$execdir/logs/lonnet.log");
1.163 harris41 86: close $fh;
87: }
88: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
89: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
90: }
91:
1.1 albertel 92: sub logthis {
93: my $message=shift;
94: my $execdir=$perlvar{'lonDaemons'};
95: my $now=time;
96: my $local=localtime($now);
1.448 albertel 97: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
98: print $fh "$local ($$): $message\n";
99: close($fh);
100: }
1.1 albertel 101: return 1;
102: }
103:
104: sub logperm {
105: my $message=shift;
106: my $execdir=$perlvar{'lonDaemons'};
107: my $now=time;
108: my $local=localtime($now);
1.448 albertel 109: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
110: print $fh "$now:$message:$local\n";
111: close($fh);
112: }
1.1 albertel 113: return 1;
114: }
115:
116: # -------------------------------------------------- Non-critical communication
117: sub subreply {
118: my ($cmd,$server)=@_;
119: my $peerfile="$perlvar{'lonSockDir'}/$server";
120: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
121: Type => SOCK_STREAM,
122: Timeout => 10)
123: or return "con_lost";
124: print $client "$cmd\n";
125: my $answer=<$client>;
1.9 www 126: if (!$answer) { $answer="con_lost"; }
1.1 albertel 127: chomp($answer);
128: return $answer;
129: }
130:
131: sub reply {
132: my ($cmd,$server)=@_;
1.205 www 133: unless (defined($hostname{$server})) { return 'no_such_host'; }
1.1 albertel 134: my $answer=subreply($cmd,$server);
1.203 www 135: if ($answer eq 'con_lost') {
1.311 matthew 136: #sleep 5;
137: #$answer=subreply($cmd,$server);
138: #if ($answer eq 'con_lost') {
1.233 albertel 139: # &logthis("Second attempt con_lost on $server");
140: # my $peerfile="$perlvar{'lonSockDir'}/$server";
141: # my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
142: # Type => SOCK_STREAM,
143: # Timeout => 10)
144: # or return "con_lost";
145: # &logthis("Killing socket");
146: # print $client "close_connection_exit\n";
147: #sleep 5;
148: # $answer=subreply($cmd,$server);
149: #}
1.203 www 150: }
1.65 www 151: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.12 www 152: &logthis("<font color=blue>WARNING:".
153: " $cmd to $server returned $answer</font>");
154: }
1.1 albertel 155: return $answer;
156: }
157:
158: # ----------------------------------------------------------- Send USR1 to lonc
159:
160: sub reconlonc {
161: my $peerfile=shift;
162: &logthis("Trying to reconnect for $peerfile");
163: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
1.448 albertel 164: if (open(my $fh,"<$loncfile")) {
1.1 albertel 165: my $loncpid=<$fh>;
166: chomp($loncpid);
167: if (kill 0 => $loncpid) {
168: &logthis("lonc at pid $loncpid responding, sending USR1");
169: kill USR1 => $loncpid;
170: sleep 1;
171: if (-e "$peerfile") { return; }
172: &logthis("$peerfile still not there, give it another try");
173: sleep 5;
174: if (-e "$peerfile") { return; }
1.12 www 175: &logthis(
176: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 177: } else {
1.12 www 178: &logthis(
179: "<font color=blue>WARNING:".
180: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 181: }
182: } else {
1.12 www 183: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 184: }
185: }
186:
187: # ------------------------------------------------------ Critical communication
1.12 www 188:
1.1 albertel 189: sub critical {
190: my ($cmd,$server)=@_;
1.89 www 191: unless ($hostname{$server}) {
192: &logthis("<font color=blue>WARNING:".
193: " Critical message to unknown server ($server)</font>");
194: return 'no_such_host';
195: }
1.1 albertel 196: my $answer=reply($cmd,$server);
197: if ($answer eq 'con_lost') {
198: my $pingreply=reply('ping',$server);
199: &reconlonc("$perlvar{'lonSockDir'}/$server");
200: my $pongreply=reply('pong',$server);
201: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
202: $answer=reply($cmd,$server);
203: if ($answer eq 'con_lost') {
204: my $now=time;
205: my $middlename=$cmd;
1.5 www 206: $middlename=substr($middlename,0,16);
1.1 albertel 207: $middlename=~s/\W//g;
208: my $dfilename=
1.305 www 209: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
210: $dumpcount++;
1.1 albertel 211: {
1.448 albertel 212: my $dfh;
213: if (open($dfh,">$dfilename")) {
214: print $dfh "$cmd\n";
215: close($dfh);
216: }
1.1 albertel 217: }
218: sleep 2;
219: my $wcmd='';
220: {
1.448 albertel 221: my $dfh;
222: if (open($dfh,"<$dfilename")) {
223: $wcmd=<$dfh>;
224: close($dfh);
225: }
1.1 albertel 226: }
227: chomp($wcmd);
1.7 www 228: if ($wcmd eq $cmd) {
1.12 www 229: &logthis("<font color=blue>WARNING: ".
230: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 231: &logperm("D:$server:$cmd");
232: return 'con_delayed';
233: } else {
1.12 www 234: &logthis("<font color=red>CRITICAL:"
235: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 236: &logperm("F:$server:$cmd");
237: return 'con_failed';
238: }
239: }
240: }
241: return $answer;
1.405 albertel 242: }
243:
1.412 www 244: #
1.405 albertel 245: # -------------- Remove all key from the env that start witha lowercase letter
1.412 www 246: # (Which is always a lon-capa value)
247:
1.405 albertel 248: sub cleanenv {
1.412 www 249: # unless (defined(&Apache::exists_config_define("MODPERL2"))) { return; }
250: # unless (&Apache::exists_config_define("MODPERL2")) { return; }
1.405 albertel 251: foreach my $key (keys(%ENV)) {
252: if ($key =~ /^[a-z]/) {
253: delete($ENV{$key});
254: }
255: }
1.374 www 256: }
257:
258: # ------------------------------------------- Transfer profile into environment
259:
260: sub transfer_profile_to_env {
261: my ($lonidsdir,$handle)=@_;
262: my @profile;
263: {
1.448 albertel 264: open(my $idf,"$lonidsdir/$handle.id");
1.374 www 265: flock($idf,LOCK_SH);
266: @profile=<$idf>;
1.448 albertel 267: close($idf);
1.374 www 268: }
269: my $envi;
1.433 matthew 270: my %Remove;
1.374 www 271: for ($envi=0;$envi<=$#profile;$envi++) {
272: chomp($profile[$envi]);
273: my ($envname,$envvalue)=split(/=/,$profile[$envi]);
274: $ENV{$envname} = $envvalue;
1.433 matthew 275: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
276: if ($time < time-300) {
277: $Remove{$key}++;
278: }
279: }
280: }
1.446 albertel 281: $ENV{'user.environment'} = "$lonidsdir/$handle.id";
1.433 matthew 282: foreach my $expired_key (keys(%Remove)) {
283: &delenv($expired_key);
1.374 www 284: }
1.1 albertel 285: }
286:
1.5 www 287: # ---------------------------------------------------------- Append Environment
288:
289: sub appenv {
1.6 www 290: my %newenv=@_;
1.191 harris41 291: foreach (keys %newenv) {
1.35 www 292: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
293: &logthis("<font color=blue>WARNING: ".
1.151 www 294: "Attempt to modify environment ".$_." to ".$newenv{$_}
295: .'</font>');
1.35 www 296: delete($newenv{$_});
297: } else {
298: $ENV{$_}=$newenv{$_};
299: }
1.191 harris41 300: }
1.95 www 301:
302: my $lockfh;
1.448 albertel 303: unless (open($lockfh,"$ENV{'user.environment'}")) {
304: return 'error: '.$!;
1.95 www 305: }
306: unless (flock($lockfh,LOCK_EX)) {
307: &logthis("<font color=blue>WARNING: ".
308: 'Could not obtain exclusive lock in appenv: '.$!);
1.448 albertel 309: close($lockfh);
1.95 www 310: return 'error: '.$!;
311: }
312:
1.6 www 313: my @oldenv;
314: {
1.448 albertel 315: my $fh;
316: unless (open($fh,"$ENV{'user.environment'}")) {
317: return 'error: '.$!;
318: }
319: @oldenv=<$fh>;
320: close($fh);
1.6 www 321: }
322: for (my $i=0; $i<=$#oldenv; $i++) {
323: chomp($oldenv[$i]);
1.9 www 324: if ($oldenv[$i] ne '') {
1.448 albertel 325: my ($name,$value)=split(/=/,$oldenv[$i]);
326: unless (defined($newenv{$name})) {
327: $newenv{$name}=$value;
328: }
1.9 www 329: }
1.6 www 330: }
331: {
1.448 albertel 332: my $fh;
333: unless (open($fh,">$ENV{'user.environment'}")) {
334: return 'error';
335: }
336: my $newname;
337: foreach $newname (keys %newenv) {
338: print $fh "$newname=$newenv{$newname}\n";
339: }
340: close($fh);
1.56 www 341: }
1.448 albertel 342:
343: close($lockfh);
1.56 www 344: return 'ok';
345: }
346: # ----------------------------------------------------- Delete from Environment
347:
348: sub delenv {
349: my $delthis=shift;
350: my %newenv=();
351: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
352: &logthis("<font color=blue>WARNING: ".
353: "Attempt to delete from environment ".$delthis);
354: return 'error';
355: }
356: my @oldenv;
357: {
1.448 albertel 358: my $fh;
359: unless (open($fh,"$ENV{'user.environment'}")) {
360: return 'error';
361: }
362: unless (flock($fh,LOCK_SH)) {
363: &logthis("<font color=blue>WARNING: ".
364: 'Could not obtain shared lock in delenv: '.$!);
365: close($fh);
366: return 'error: '.$!;
367: }
368: @oldenv=<$fh>;
369: close($fh);
1.56 www 370: }
371: {
1.448 albertel 372: my $fh;
373: unless (open($fh,">$ENV{'user.environment'}")) {
374: return 'error';
375: }
376: unless (flock($fh,LOCK_EX)) {
377: &logthis("<font color=blue>WARNING: ".
378: 'Could not obtain exclusive lock in delenv: '.$!);
379: close($fh);
380: return 'error: '.$!;
381: }
382: foreach (@oldenv) {
1.473 matthew 383: if ($_=~/^$delthis/) {
384: my ($key,undef) = split('=',$_);
385: delete($ENV{$key});
386: } else {
387: print $fh $_;
388: }
1.448 albertel 389: }
390: close($fh);
1.5 www 391: }
392: return 'ok';
1.369 albertel 393: }
394:
395: # ------------------------------------------ Find out current server userload
396: # there is a copy in lond
397: sub userload {
398: my $numusers=0;
399: {
400: opendir(LONIDS,$perlvar{'lonIDsDir'});
401: my $filename;
402: my $curtime=time;
403: while ($filename=readdir(LONIDS)) {
404: if ($filename eq '.' || $filename eq '..') {next;}
1.404 albertel 405: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
1.437 albertel 406: if ($curtime-$mtime < 1800) { $numusers++; }
1.369 albertel 407: }
408: closedir(LONIDS);
409: }
410: my $userloadpercent=0;
411: my $maxuserload=$perlvar{'lonUserLoadLim'};
412: if ($maxuserload) {
1.371 albertel 413: $userloadpercent=100*$numusers/$maxuserload;
1.369 albertel 414: }
1.372 albertel 415: $userloadpercent=sprintf("%.2f",$userloadpercent);
1.369 albertel 416: return $userloadpercent;
1.283 www 417: }
418:
419: # ------------------------------------------ Fight off request when overloaded
420:
421: sub overloaderror {
422: my ($r,$checkserver)=@_;
423: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
424: my $loadavg;
425: if ($checkserver eq $perlvar{'lonHostID'}) {
1.448 albertel 426: open(my $loadfile,'/proc/loadavg');
1.283 www 427: $loadavg=<$loadfile>;
428: $loadavg =~ s/\s.*//g;
1.285 matthew 429: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
1.448 albertel 430: close($loadfile);
1.283 www 431: } else {
432: $loadavg=&reply('load',$checkserver);
433: }
1.285 matthew 434: my $overload=$loadavg-100;
1.283 www 435: if ($overload>0) {
1.285 matthew 436: $r->err_headers_out->{'Retry-After'}=$overload;
1.283 www 437: $r->log_error('Overload of '.$overload.' on '.$checkserver);
1.502 matthew 438: return 409;
1.283 www 439: }
440: return '';
1.5 www 441: }
1.1 albertel 442:
443: # ------------------------------ Find server with least workload from spare.tab
1.11 www 444:
1.1 albertel 445: sub spareserver {
1.370 albertel 446: my ($loadpercent,$userloadpercent) = @_;
1.1 albertel 447: my $tryserver;
448: my $spareserver='';
1.370 albertel 449: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
450: my $lowestserver=$loadpercent > $userloadpercent?
451: $loadpercent : $userloadpercent;
1.1 albertel 452: foreach $tryserver (keys %spareid) {
1.411 albertel 453: my $loadans=reply('load',$tryserver);
454: my $userloadans=reply('userload',$tryserver);
455: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
456: next; #didn't get a number from the server
457: }
458: my $answer;
459: if ($loadans =~ /\d/) {
460: if ($userloadans =~ /\d/) {
461: #both are numbers, pick the bigger one
462: $answer=$loadans > $userloadans?
463: $loadans : $userloadans;
464: } else {
465: $answer = $loadans;
466: }
467: } else {
468: $answer = $userloadans;
469: }
470: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
471: $spareserver="http://$hostname{$tryserver}";
472: $lowestserver=$answer;
473: }
1.370 albertel 474: }
1.1 albertel 475: return $spareserver;
1.202 matthew 476: }
477:
478: # --------------------------------------------- Try to change a user's password
479:
480: sub changepass {
481: my ($uname,$udom,$currentpass,$newpass,$server)=@_;
482: $currentpass = &escape($currentpass);
483: $newpass = &escape($newpass);
484: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass",
485: $server);
486: if (! $answer) {
487: &logthis("No reply on password change request to $server ".
488: "by $uname in domain $udom.");
489: } elsif ($answer =~ "^ok") {
490: &logthis("$uname in $udom successfully changed their password ".
491: "on $server.");
492: } elsif ($answer =~ "^pwchange_failure") {
493: &logthis("$uname in $udom was unable to change their password ".
494: "on $server. The action was blocked by either lcpasswd ".
495: "or pwchange");
496: } elsif ($answer =~ "^non_authorized") {
497: &logthis("$uname in $udom did not get their password correct when ".
498: "attempting to change it on $server.");
499: } elsif ($answer =~ "^auth_mode_error") {
500: &logthis("$uname in $udom attempted to change their password despite ".
501: "not being locally or internally authenticated on $server.");
502: } elsif ($answer =~ "^unknown_user") {
503: &logthis("$uname in $udom attempted to change their password ".
504: "on $server but were unable to because $server is not ".
505: "their home server.");
506: } elsif ($answer =~ "^refused") {
507: &logthis("$server refused to change $uname in $udom password because ".
508: "it was sent an unencrypted request to change the password.");
509: }
510: return $answer;
1.1 albertel 511: }
512:
1.169 harris41 513: # ----------------------- Try to determine user's current authentication scheme
514:
515: sub queryauthenticate {
516: my ($uname,$udom)=@_;
1.456 albertel 517: my $uhome=&homeserver($uname,$udom);
518: if (!$uhome) {
519: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
520: return 'no_host';
521: }
522: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
523: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
524: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.169 harris41 525: }
1.456 albertel 526: return $answer;
1.169 harris41 527: }
528:
1.1 albertel 529: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 530:
1.1 albertel 531: sub authenticate {
532: my ($uname,$upass,$udom)=@_;
1.12 www 533: $upass=escape($upass);
1.199 www 534: $uname=~s/\W//g;
1.471 albertel 535: my $uhome=&homeserver($uname,$udom);
536: if (!$uhome) {
537: &logthis("User $uname at $udom is unknown in authenticate");
538: return 'no_host';
1.1 albertel 539: }
1.471 albertel 540: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
541: if ($answer eq 'authorized') {
542: &logthis("User $uname at $udom authorized by $uhome");
543: return $uhome;
544: }
545: if ($answer eq 'non_authorized') {
546: &logthis("User $uname at $udom rejected by $uhome");
547: return 'no_host';
1.9 www 548: }
1.471 albertel 549: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.1 albertel 550: return 'no_host';
551: }
552:
553: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 554:
1.1 albertel 555: sub homeserver {
1.230 stredwic 556: my ($uname,$udom,$ignoreBadCache)=@_;
1.1 albertel 557: my $index="$uname:$udom";
1.426 albertel 558:
559: my ($result,$cached)=&is_cached(\%homecache,$index,'home',86400);
560: if (defined($cached)) { return $result; }
1.1 albertel 561: my $tryserver;
562: foreach $tryserver (keys %libserv) {
1.230 stredwic 563: next if ($ignoreBadCache ne 'true' &&
1.231 stredwic 564: exists($badServerCache{$tryserver}));
1.1 albertel 565: if ($hostdom{$tryserver} eq $udom) {
566: my $answer=reply("home:$udom:$uname",$tryserver);
567: if ($answer eq 'found') {
1.426 albertel 568: return &do_cache(\%homecache,$index,$tryserver,'home');
1.231 stredwic 569: } elsif ($answer eq 'no_host') {
570: $badServerCache{$tryserver}=1;
1.221 matthew 571: }
1.1 albertel 572: }
573: }
574: return 'no_host';
1.70 www 575: }
576:
577: # ------------------------------------- Find the usernames behind a list of IDs
578:
579: sub idget {
580: my ($udom,@ids)=@_;
581: my %returnhash=();
582:
583: my $tryserver;
584: foreach $tryserver (keys %libserv) {
585: if ($hostdom{$tryserver} eq $udom) {
586: my $idlist=join('&',@ids);
587: $idlist=~tr/A-Z/a-z/;
588: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
589: my @answer=();
1.76 www 590: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 591: @answer=split(/\&/,$reply);
592: } ;
593: my $i;
594: for ($i=0;$i<=$#ids;$i++) {
595: if ($answer[$i]) {
596: $returnhash{$ids[$i]}=$answer[$i];
597: }
598: }
599: }
600: }
601: return %returnhash;
602: }
603:
604: # ------------------------------------- Find the IDs behind a list of usernames
605:
606: sub idrget {
607: my ($udom,@unames)=@_;
608: my %returnhash=();
1.191 harris41 609: foreach (@unames) {
1.70 www 610: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
1.191 harris41 611: }
1.70 www 612: return %returnhash;
613: }
614:
615: # ------------------------------- Store away a list of names and associated IDs
616:
617: sub idput {
618: my ($udom,%ids)=@_;
619: my %servers=();
1.191 harris41 620: foreach (keys %ids) {
1.487 albertel 621: &cput('environment',{'id'=>$ids{$_}},$udom,$_);
1.70 www 622: my $uhom=&homeserver($_,$udom);
623: if ($uhom ne 'no_host') {
624: my $id=&escape($ids{$_});
625: $id=~tr/A-Z/a-z/;
626: my $unam=&escape($_);
627: if ($servers{$uhom}) {
628: $servers{$uhom}.='&'.$id.'='.$unam;
629: } else {
630: $servers{$uhom}=$id.'='.$unam;
631: }
632: }
1.191 harris41 633: }
634: foreach (keys %servers) {
1.70 www 635: &critical('idput:'.$udom.':'.$servers{$_},$_);
1.191 harris41 636: }
1.344 www 637: }
638:
639: # --------------------------------------------------- Assign a key to a student
640:
641: sub assign_access_key {
1.364 www 642: #
643: # a valid key looks like uname:udom#comments
644: # comments are being appended
645: #
1.498 www 646: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
647: $kdom=
648: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($kdom));
649: $knum=
650: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($knum));
1.344 www 651: $cdom=
652: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
653: $cnum=
654: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
655: $udom=$ENV{'user.name'} unless (defined($udom));
656: $uname=$ENV{'user.domain'} unless (defined($uname));
1.498 www 657: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1.364 www 658: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1.479 albertel 659: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1.364 www 660: # assigned to this person
661: # - this should not happen,
1.345 www 662: # unless something went wrong
663: # the first time around
664: # ready to assign
1.364 www 665: $logentry=$1.'; '.$logentry;
1.496 www 666: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1.498 www 667: $kdom,$knum) eq 'ok') {
1.345 www 668: # key now belongs to user
1.346 www 669: my $envkey='key.'.$cdom.'_'.$cnum;
1.345 www 670: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
671: &appenv('environment.'.$envkey => $ckey);
672: return 'ok';
673: } else {
674: return
675: 'error: Count not permanently assign key, will need to be re-entered later.';
676: }
677: } else {
678: return 'error: Could not assign key, try again later.';
679: }
1.364 www 680: } elsif (!$existing{$ckey}) {
1.345 www 681: # the key does not exist
682: return 'error: The key does not exist';
683: } else {
684: # the key is somebody else's
685: return 'error: The key is already in use';
686: }
1.344 www 687: }
688:
1.364 www 689: # ------------------------------------------ put an additional comment on a key
690:
691: sub comment_access_key {
692: #
693: # a valid key looks like uname:udom#comments
694: # comments are being appended
695: #
696: my ($ckey,$cdom,$cnum,$logentry)=@_;
697: $cdom=
698: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
699: $cnum=
700: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
701: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
702: if ($existing{$ckey}) {
703: $existing{$ckey}.='; '.$logentry;
704: # ready to assign
1.367 www 705: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1.364 www 706: $cdom,$cnum) eq 'ok') {
707: return 'ok';
708: } else {
709: return 'error: Count not store comment.';
710: }
711: } else {
712: # the key does not exist
713: return 'error: The key does not exist';
714: }
715: }
716:
1.344 www 717: # ------------------------------------------------------ Generate a set of keys
718:
719: sub generate_access_keys {
1.364 www 720: my ($number,$cdom,$cnum,$logentry)=@_;
1.344 www 721: $cdom=
722: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
723: $cnum=
724: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
1.361 www 725: unless (&allowed('mky',$cdom)) { return 0; }
1.344 www 726: unless (($cdom) && ($cnum)) { return 0; }
727: if ($number>10000) { return 0; }
728: sleep(2); # make sure don't get same seed twice
729: srand(time()^($$+($$<<15))); # from "Programming Perl"
730: my $total=0;
731: for (my $i=1;$i<=$number;$i++) {
732: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
733: sprintf("%lx",int(100000*rand)).'-'.
734: sprintf("%lx",int(100000*rand));
735: $newkey=~s/1/g/g; # folks mix up 1 and l
736: $newkey=~s/0/h/g; # and also 0 and O
737: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
738: if ($existing{$newkey}) {
739: $i--;
740: } else {
1.364 www 741: if (&put('accesskeys',
742: { $newkey => '# generated '.localtime().
743: ' by '.$ENV{'user.name'}.'@'.$ENV{'user.domain'}.
744: '; '.$logentry },
745: $cdom,$cnum) eq 'ok') {
1.344 www 746: $total++;
747: }
748: }
749: }
750: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
751: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
752: return $total;
753: }
754:
755: # ------------------------------------------------------- Validate an accesskey
756:
757: sub validate_access_key {
758: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
759: $cdom=
760: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
761: $cnum=
762: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
1.497 www 763: $udom=$ENV{'user.domain'} unless (defined($udom));
764: $uname=$ENV{'user.name'} unless (defined($uname));
1.345 www 765: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1.479 albertel 766: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1.70 www 767: }
768:
769: # ------------------------------------- Find the section of student in a course
1.298 matthew 770:
771: sub getsection {
772: my ($udom,$unam,$courseid)=@_;
773: $courseid=~s/\_/\//g;
774: $courseid=~s/^(\w)/\/$1/;
775: my %Pending;
776: my %Expired;
777: #
778: # Each role can either have not started yet (pending), be active,
779: # or have expired.
780: #
781: # If there is an active role, we are done.
782: #
783: # If there is more than one role which has not started yet,
784: # choose the one which will start sooner
785: # If there is one role which has not started yet, return it.
786: #
787: # If there is more than one expired role, choose the one which ended last.
788: # If there is a role which has expired, return it.
789: #
790: foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
791: &homeserver($unam,$udom)))) {
792: my ($key,$value)=split(/\=/,$_);
793: $key=&unescape($key);
1.479 albertel 794: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1.298 matthew 795: my $section=$1;
796: if ($key eq $courseid.'_st') { $section=''; }
797: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
798: my $now=time;
1.523.2.8 albertel 799: if (defined($end) && $end && ($now > $end)) {
1.298 matthew 800: $Expired{$end}=$section;
801: next;
802: }
1.523.2.8 albertel 803: if (defined($start) && $start && ($now < $start)) {
1.298 matthew 804: $Pending{$start}=$section;
805: next;
806: }
807: return $section;
808: }
809: #
810: # Presumedly there will be few matching roles from the above
811: # loop and the sorting time will be negligible.
812: if (scalar(keys(%Pending))) {
813: my ($time) = sort {$a <=> $b} keys(%Pending);
814: return $Pending{$time};
815: }
816: if (scalar(keys(%Expired))) {
817: my @sorted = sort {$a <=> $b} keys(%Expired);
818: my $time = pop(@sorted);
819: return $Expired{$time};
820: }
821: return '-1';
822: }
1.70 www 823:
1.452 albertel 824:
825: my $disk_caching_disabled=1;
826:
1.416 albertel 827: sub devalidate_cache {
1.428 albertel 828: my ($cache,$id,$name) = @_;
1.417 albertel 829: delete $$cache{$id.'.time'};
1.523.2.5 albertel 830: delete $$cache{$id.'.file'};
1.417 albertel 831: delete $$cache{$id};
1.523.2.3 albertel 832: if (1 || $disk_caching_disabled) { return; }
1.442 albertel 833: my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
1.523.2.3 albertel 834: if (!-e $filename) { return; }
835: open(DB,">$filename.lock");
1.428 albertel 836: flock(DB,LOCK_EX);
837: my %hash;
838: if (tie(%hash,'GDBM_File',$filename,&GDBM_WRCREAT(),0640)) {
1.442 albertel 839: eval <<'EVALBLOCK';
840: delete($hash{$id});
841: delete($hash{$id.'.time'});
842: EVALBLOCK
843: if ($@) {
844: &logthis("<font color='red'>devalidate_cache blew up :$@:$name</font>");
845: unlink($filename);
846: }
1.428 albertel 847: } else {
1.442 albertel 848: if (-e $filename) {
849: &logthis("Unable to tie hash (devalidate cache): $name");
850: unlink($filename);
851: }
1.428 albertel 852: }
853: untie(%hash);
854: flock(DB,LOCK_UN);
855: close(DB);
1.416 albertel 856: }
857:
858: sub is_cached {
1.425 albertel 859: my ($cache,$id,$name,$time) = @_;
1.420 albertel 860: if (!$time) { $time=300; }
1.416 albertel 861: if (!exists($$cache{$id.'.time'})) {
1.523.2.4 albertel 862: &load_cache_item($cache,$name,$id,$time);
1.425 albertel 863: }
864: if (!exists($$cache{$id.'.time'})) {
865: # &logthis("Didn't find $id");
1.417 albertel 866: return (undef,undef);
1.416 albertel 867: } else {
1.425 albertel 868: if (time-($$cache{$id.'.time'})>$time) {
1.523.2.5 albertel 869: if (exists($$cache{$id.'.file'})) {
870: foreach my $filename (@{ $$cache{$id.'.file'} }) {
871: my $mtime=(stat($filename))[9];
872: #+1 is to take care of edge effects
873: if ($mtime && (($mtime+1) < ($$cache{$id.'.time'}))) {
874: # &logthis("Upping $mtime - ".$$cache{$id.'.time'}.
875: # "$id because of $filename");
876: } else {
1.523.2.6 albertel 877: # &logthis("Devalidating $filename $id - ".(time-($$cache{$id.'.time'})));
1.523.2.5 albertel 878: &devalidate_cache($cache,$id,$name);
879: return (undef,undef);
880: }
881: }
882: $$cache{$id.'.time'}=time;
883: } else {
884: # &logthis("Devalidating $id - ".time-($$cache{$id.'.time'}));
885: &devalidate_cache($cache,$id,$name);
886: return (undef,undef);
887: }
1.416 albertel 888: }
889: }
1.417 albertel 890: return ($$cache{$id},1);
1.416 albertel 891: }
892:
893: sub do_cache {
1.425 albertel 894: my ($cache,$id,$value,$name) = @_;
1.416 albertel 895: $$cache{$id.'.time'}=time;
1.425 albertel 896: $$cache{$id}=$value;
1.428 albertel 897: # &logthis("Caching $id as :$value:");
898: &save_cache_item($cache,$name,$id);
1.416 albertel 899: # do_cache implictly return the set value
1.425 albertel 900: $$cache{$id};
901: }
902:
1.523.2.3 albertel 903: my %do_save_item;
904: my %do_save;
1.428 albertel 905: sub save_cache_item {
906: my ($cache,$name,$id)=@_;
1.452 albertel 907: if ($disk_caching_disabled) { return; }
1.523.2.3 albertel 908: $do_save{$name}=$cache;
909: if (!exists($do_save_item{$name})) { $do_save_item{$name}={} }
910: $do_save_item{$name}->{$id}=1;
911: return;
912: }
913:
914: sub save_cache {
915: if ($disk_caching_disabled) { return; }
916: my ($cache,$name,$id);
917: foreach $name (keys(%do_save)) {
918: $cache=$do_save{$name};
919:
920: my $starttime=&Time::HiRes::time();
921: &logthis("Saving :$name:");
922: my %hash;
923: my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
924: open(DB,">$filename.lock");
925: flock(DB,LOCK_EX);
926: if (tie(%hash,'GDBM_File',$filename,&GDBM_WRCREAT(),0640)) {
927: foreach $id (keys(%{ $do_save_item{$name} })) {
928: eval <<'EVALBLOCK';
929: $hash{$id.'.time'}=$$cache{$id.'.time'};
930: $hash{$id}=freeze({'item'=>$$cache{$id}});
1.523.2.5 albertel 931: if (exists($$cache{$id.'.file'})) {
932: $hash{$id.'.file'}=freeze({'item'=>$$cache{$id.'.file'}});
933: }
1.442 albertel 934: EVALBLOCK
1.523.2.3 albertel 935: if ($@) {
936: &logthis("<font color='red'>save_cache blew up :$@:$name</font>");
937: unlink($filename);
938: last;
939: }
940: }
941: } else {
942: if (-e $filename) {
943: &logthis("Unable to tie hash (save cache): $name ($!)");
944: unlink($filename);
945: }
1.442 albertel 946: }
1.523.2.3 albertel 947: untie(%hash);
948: flock(DB,LOCK_UN);
949: close(DB);
950: &logthis("save_cache $name took ".(&Time::HiRes::time()-$starttime));
1.428 albertel 951: }
1.523.2.3 albertel 952: undef(%do_save);
953: undef(%do_save_item);
954:
1.428 albertel 955: }
956:
957: sub load_cache_item {
1.523.2.4 albertel 958: my ($cache,$name,$id,$time)=@_;
1.452 albertel 959: if ($disk_caching_disabled) { return; }
1.428 albertel 960: my $starttime=&Time::HiRes::time();
961: # &logthis("Before Loading $name for $id size is ".scalar(%$cache));
962: my %hash;
1.442 albertel 963: my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
1.523.2.3 albertel 964: if (!-e $filename) { return; }
965: open(DB,">$filename.lock");
1.428 albertel 966: flock(DB,LOCK_SH);
967: if (tie(%hash,'GDBM_File',$filename,&GDBM_READER(),0640)) {
1.442 albertel 968: eval <<'EVALBLOCK';
969: if (!%$cache) {
970: my $count;
971: while (my ($key,$value)=each(%hash)) {
972: $count++;
973: if ($key =~ /\.time$/) {
974: $$cache{$key}=$value;
975: } else {
976: my $hashref=thaw($value);
977: $$cache{$key}=$hashref->{'item'};
978: }
1.428 albertel 979: }
1.442 albertel 980: # &logthis("Initial load: $count");
981: } else {
1.523.2.4 albertel 982: if (($$cache{$id.'.time'}+$time) < time) {
983: $$cache{$id.'.time'}=$hash{$id.'.time'};
1.523.2.5 albertel 984: {
985: my $hashref=thaw($hash{$id});
986: $$cache{$id}=$hashref->{'item'};
987: }
988: if (exists($hash{$id.'.file'})) {
989: my $hashref=thaw($hash{$id.'.file'});
990: $$cache{$id.'.file'}=$hashref->{'item'};
991: }
1.523.2.4 albertel 992: }
1.428 albertel 993: }
1.442 albertel 994: EVALBLOCK
995: if ($@) {
996: &logthis("<font color='red'>load_cache blew up :$@:$name</font>");
997: unlink($filename);
998: }
999: } else {
1000: if (-e $filename) {
1.445 www 1001: &logthis("Unable to tie hash (load cache item): $name ($!)");
1.442 albertel 1002: unlink($filename);
1.428 albertel 1003: }
1004: }
1005: untie(%hash);
1006: flock(DB,LOCK_UN);
1007: close(DB);
1008: # &logthis("After Loading $name size is ".scalar(%$cache));
1009: # &logthis("load_cache_item $name took ".(&Time::HiRes::time()-$starttime));
1010: }
1011:
1.70 www 1012: sub usection {
1013: my ($udom,$unam,$courseid)=@_;
1.416 albertel 1014: my $hashid="$udom:$unam:$courseid";
1015:
1.425 albertel 1016: my ($result,$cached)=&is_cached(\%usectioncache,$hashid,'usection');
1.417 albertel 1017: if (defined($cached)) { return $result; }
1.70 www 1018: $courseid=~s/\_/\//g;
1019: $courseid=~s/^(\w)/\/$1/;
1.191 harris41 1020: foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
1021: &homeserver($unam,$udom)))) {
1.70 www 1022: my ($key,$value)=split(/\=/,$_);
1023: $key=&unescape($key);
1.479 albertel 1024: if ($key=~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/) {
1.70 www 1025: my $section=$1;
1026: if ($key eq $courseid.'_st') { $section=''; }
1027: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
1028: my $now=time;
1029: my $notactive=0;
1030: if ($start) {
1031: if ($now<$start) { $notactive=1; }
1032: }
1033: if ($end) {
1034: if ($now>$end) { $notactive=1; }
1035: }
1.416 albertel 1036: unless ($notactive) {
1.425 albertel 1037: return &do_cache(\%usectioncache,$hashid,$section,'usection');
1.416 albertel 1038: }
1.70 www 1039: }
1.191 harris41 1040: }
1.425 albertel 1041: return &do_cache(\%usectioncache,$hashid,'-1','usection');
1.70 www 1042: }
1043:
1044: # ------------------------------------- Read an entry from a user's environment
1045:
1046: sub userenvironment {
1047: my ($udom,$unam,@what)=@_;
1048: my %returnhash=();
1049: my @answer=split(/\&/,
1050: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1051: &homeserver($unam,$udom)));
1052: my $i;
1053: for ($i=0;$i<=$#what;$i++) {
1054: $returnhash{$what[$i]}=&unescape($answer[$i]);
1055: }
1056: return %returnhash;
1.1 albertel 1057: }
1058:
1.263 www 1059: # -------------------------------------------------------------------- New chat
1060:
1061: sub chatsend {
1062: my ($newentry,$anon)=@_;
1063: my $cnum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1064: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1065: my $chome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1066: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1067: &escape($ENV{'user.domain'}.':'.$ENV{'user.name'}.':'.$anon.':'.
1068: &escape($newentry)),$chome);
1.292 www 1069: }
1070:
1071: # ------------------------------------------ Find current version of a resource
1072:
1073: sub getversion {
1074: my $fname=&clutter(shift);
1075: unless ($fname=~/^\/res\//) { return -1; }
1076: return ¤tversion(&filelocation('',$fname));
1077: }
1078:
1079: sub currentversion {
1080: my $fname=shift;
1.440 www 1081: my ($result,$cached)=&is_cached(\%resversioncache,$fname,'resversion',600);
1082: if (defined($cached)) { return $result; }
1.292 www 1083: my $author=$fname;
1084: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1085: my ($udom,$uname)=split(/\//,$author);
1086: my $home=homeserver($uname,$udom);
1087: if ($home eq 'no_host') {
1088: return -1;
1089: }
1090: my $answer=reply("currentversion:$fname",$home);
1091: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1092: return -1;
1093: }
1.440 www 1094: return &do_cache(\%resversioncache,$fname,$answer,'resversion');
1.263 www 1095: }
1096:
1.1 albertel 1097: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 1098:
1.1 albertel 1099: sub subscribe {
1100: my $fname=shift;
1.312 www 1101: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1.523.2.1 albertel 1102: $fname=~s/[\n\r]//g;
1.1 albertel 1103: my $author=$fname;
1104: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1105: my ($udom,$uname)=split(/\//,$author);
1106: my $home=homeserver($uname,$udom);
1.335 albertel 1107: if ($home eq 'no_host') {
1108: return 'not_found';
1.1 albertel 1109: }
1110: my $answer=reply("sub:$fname",$home);
1.64 www 1111: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1112: $answer.=' by '.$home;
1113: }
1.1 albertel 1114: return $answer;
1115: }
1116:
1.8 www 1117: # -------------------------------------------------------------- Replicate file
1118:
1119: sub repcopy {
1120: my $filename=shift;
1.23 www 1121: $filename=~s/\/+/\//g;
1.214 www 1122: if ($filename=~/^\/home\/httpd\/html\/adm\//) { return OK; }
1.523.2.1 albertel 1123: $filename=~s/[\n\r]//g;
1.8 www 1124: my $transname="$filename.in.transfer";
1.17 www 1125: if ((-e $filename) || (-e $transname)) { return OK; }
1.8 www 1126: my $remoteurl=subscribe($filename);
1.64 www 1127: if ($remoteurl =~ /^con_lost by/) {
1128: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 1129: return HTTP_SERVICE_UNAVAILABLE;
1130: } elsif ($remoteurl eq 'not_found') {
1.441 albertel 1131: #&logthis("Subscribe returned not_found: $filename");
1.8 www 1132: return HTTP_NOT_FOUND;
1.64 www 1133: } elsif ($remoteurl =~ /^rejected by/) {
1134: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 1135: return FORBIDDEN;
1.20 www 1136: } elsif ($remoteurl eq 'directory') {
1137: return OK;
1.8 www 1138: } else {
1.290 www 1139: my $author=$filename;
1140: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1141: my ($udom,$uname)=split(/\//,$author);
1142: my $home=homeserver($uname,$udom);
1143: unless ($home eq $perlvar{'lonHostID'}) {
1.8 www 1144: my @parts=split(/\//,$filename);
1145: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1146: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1147: &logthis("Malconfiguration for replication: $filename");
1148: return HTTP_BAD_REQUEST;
1149: }
1150: my $count;
1151: for ($count=5;$count<$#parts;$count++) {
1152: $path.="/$parts[$count]";
1153: if ((-e $path)!=1) {
1154: mkdir($path,0777);
1155: }
1156: }
1157: my $ua=new LWP::UserAgent;
1158: my $request=new HTTP::Request('GET',"$remoteurl");
1159: my $response=$ua->request($request,$transname);
1160: if ($response->is_error()) {
1161: unlink($transname);
1162: my $message=$response->status_line;
1.12 www 1163: &logthis("<font color=blue>WARNING:"
1164: ." LWP get: $message: $filename</font>");
1.8 www 1165: return HTTP_SERVICE_UNAVAILABLE;
1166: } else {
1.16 www 1167: if ($remoteurl!~/\.meta$/) {
1168: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1169: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1170: if ($mresponse->is_error()) {
1171: unlink($filename.'.meta');
1172: &logthis(
1173: "<font color=yellow>INFO: No metadata: $filename</font>");
1174: }
1175: }
1.8 www 1176: rename($transname,$filename);
1177: return OK;
1178: }
1.290 www 1179: }
1.8 www 1180: }
1.330 www 1181: }
1182:
1183: # ------------------------------------------------ Get server side include body
1184: sub ssi_body {
1.381 albertel 1185: my ($filelink,%form)=@_;
1.330 www 1186: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1.381 albertel 1187: &ssi($filelink,%form));
1.451 albertel 1188: $output=~s/^.*?\<body[^\>]*\>//si;
1189: $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
1.331 www 1190: $output=~
1191: s/\/\/ BEGIN LON\-CAPA Internal.+\/\/ END LON\-CAPA Internal\s//gs;
1.330 www 1192: return $output;
1.8 www 1193: }
1194:
1.15 www 1195: # --------------------------------------------------------- Server Side Include
1196:
1197: sub ssi {
1198:
1.23 www 1199: my ($fn,%form)=@_;
1.15 www 1200:
1201: my $ua=new LWP::UserAgent;
1.23 www 1202:
1203: my $request;
1204:
1205: if (%form) {
1206: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
1.201 albertel 1207: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1.23 www 1208: } else {
1209: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
1210: }
1211:
1.15 www 1212: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1213: my $response=$ua->request($request);
1214:
1.324 www 1215: return $response->content;
1216: }
1217:
1218: sub externalssi {
1219: my ($url)=@_;
1220: my $ua=new LWP::UserAgent;
1221: my $request=new HTTP::Request('GET',$url);
1222: my $response=$ua->request($request);
1.15 www 1223: return $response->content;
1224: }
1.254 www 1225:
1.492 albertel 1226: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1227:
1228: sub allowuploaded {
1229: my ($srcurl,$url)=@_;
1230: $url=&clutter(&declutter($url));
1231: my $dir=$url;
1232: $dir=~s/\/[^\/]+$//;
1233: my %httpref=();
1234: my $httpurl=&hreflocation('',$url);
1235: $httpref{'httpref.'.$httpurl}=$srcurl;
1236: &Apache::lonnet::appenv(%httpref);
1.254 www 1237: }
1.477 raeburn 1238:
1.478 albertel 1239: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1240: # input: action, courseID, current domain, home server for course, intended
1241: # path to file, source of file.
1.485 raeburn 1242: # output: url to file (if action was uploaddoc),
1243: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1.477 raeburn 1244: #
1.478 albertel 1245: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1246: # course.
1.477 raeburn 1247: #
1.478 albertel 1248: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1249: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1250: # course's home server.
1.477 raeburn 1251: #
1.478 albertel 1252: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1253: # be copied from $source (current location) to
1254: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1255: # and will then be copied to
1256: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1257: # course's home server.
1.485 raeburn 1258: #
1.481 raeburn 1259: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1.485 raeburn 1260: # will be retrived from $ENV{form.uploaddoc} (from DOCS interface) to
1.481 raeburn 1261: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1262: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1263: # in course's home server.
1264:
1.477 raeburn 1265:
1266: sub process_coursefile {
1267: my ($action,$docuname,$docudom,$docuhome,$file,$source)=@_;
1268: my $fetchresult;
1269: if ($action eq 'propagate') {
1270: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file
1271: ,$docuhome);
1.481 raeburn 1272: } else {
1.477 raeburn 1273: my $fetchresult = '';
1274: my $fpath = '';
1275: my $fname = $file;
1.478 albertel 1276: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1.477 raeburn 1277: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1278: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1279: unless ($fpath eq '') {
1.478 albertel 1280: my @parts=split('/',$fpath);
1.477 raeburn 1281: foreach my $part (@parts) {
1282: $filepath.= '/'.$part;
1283: if ((-e $filepath)!=1) {
1284: mkdir($filepath,0777);
1285: }
1286: }
1287: }
1.481 raeburn 1288: if ($action eq 'copy') {
1289: if ($source eq '') {
1290: $fetchresult = 'no source file';
1291: return $fetchresult;
1292: } else {
1293: my $destination = $filepath.'/'.$fname;
1294: rename($source,$destination);
1295: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1296: $docuhome);
1297: }
1298: } elsif ($action eq 'uploaddoc') {
1299: open(my $fh,'>'.$filepath.'/'.$fname);
1300: print $fh $ENV{'form.'.$source};
1301: close($fh);
1.477 raeburn 1302: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1303: $docuhome);
1.481 raeburn 1304: if ($fetchresult eq 'ok') {
1305: return '/uploaded/'.$fpath.'/'.$fname;
1306: } else {
1307: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1308: ' to host '.$docuhome.': '.$fetchresult);
1309: return '/adm/notfound.html';
1310: }
1.477 raeburn 1311: }
1312: }
1.485 raeburn 1313: unless ( $fetchresult eq 'ok') {
1.477 raeburn 1314: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1315: ' to host '.$docuhome.': '.$fetchresult);
1316: }
1317: return $fetchresult;
1318: }
1319:
1.257 www 1320: # --------------- Take an uploaded file and put it into the userfiles directory
1.259 www 1321: # input: name of form element, coursedoc=1 means this is for the course
1.257 www 1322: # output: url of file in userspace
1323:
1324: sub userfileupload {
1.493 albertel 1325: my ($formname,$coursedoc,$subdir)=@_;
1326: if (!defined($subdir)) { $subdir='unknown'; }
1.477 raeburn 1327: my $fname=$ENV{'form.'.$formname.'.filename'};
1.315 www 1328: # Replace Windows backslashes by forward slashes
1.257 www 1329: $fname=~s/\\/\//g;
1.315 www 1330: # Get rid of everything but the actual filename
1.257 www 1331: $fname=~s/^.*\/([^\/]+)$/$1/;
1.315 www 1332: # Replace spaces by underscores
1333: $fname=~s/\s+/\_/g;
1334: # Replace all other weird characters by nothing
1.317 www 1335: $fname=~s/[^\w\.\-]//g;
1.315 www 1336: # See if there is anything left
1.257 www 1337: unless ($fname) { return 'error: no uploaded file'; }
1.477 raeburn 1338: chop($ENV{'form.'.$formname});
1.523 raeburn 1339: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1340: my $now = time;
1341: my $filepath = 'tmp/helprequests/'.$now;
1342: my @parts=split(/\//,$filepath);
1343: my $fullpath = $perlvar{'lonDaemons'};
1344: for (my $i=0;$i<@parts;$i++) {
1345: $fullpath .= '/'.$parts[$i];
1346: if ((-e $fullpath)!=1) {
1347: mkdir($fullpath,0777);
1348: }
1349: }
1350: open(my $fh,'>'.$fullpath.'/'.$fname);
1351: print $fh $ENV{'form.'.$formname};
1352: close($fh);
1353: return $fullpath.'/'.$fname;
1354: }
1.258 www 1355: # Create the directory if not present
1.259 www 1356: my $docuname='';
1357: my $docudom='';
1358: my $docuhome='';
1.493 albertel 1359: $fname="$subdir/$fname";
1.259 www 1360: if ($coursedoc) {
1361: $docuname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1362: $docudom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1363: $docuhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.481 raeburn 1364: if ($ENV{'form.folder'} =~ m/^default/) {
1.485 raeburn 1365: return &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname);
1.481 raeburn 1366: } else {
1367: $fname=$ENV{'form.folder'}.'/'.$fname;
1.485 raeburn 1368: return &process_coursefile('uploaddoc',$docuname,$docudom,$docuhome,$fname,$formname);
1.481 raeburn 1369: }
1.259 www 1370: } else {
1371: $docuname=$ENV{'user.name'};
1372: $docudom=$ENV{'user.domain'};
1373: $docuhome=$ENV{'user.home'};
1.485 raeburn 1374: return &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname);
1.259 www 1375: }
1.271 www 1376: }
1377:
1378: sub finishuserfileupload {
1.477 raeburn 1379: my ($docuname,$docudom,$docuhome,$formname,$fname)=@_;
1380: my $path=$docudom.'/'.$docuname.'/';
1.258 www 1381: my $filepath=$perlvar{'lonDocRoot'};
1.494 albertel 1382: my ($fnamepath,$file);
1383: $file=$fname;
1384: if ($fname=~m|/|) {
1385: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1386: $path.=$fnamepath.'/';
1387: }
1.259 www 1388: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
1.258 www 1389: my $count;
1390: for ($count=4;$count<=$#parts;$count++) {
1391: $filepath.="/$parts[$count]";
1392: if ((-e $filepath)!=1) {
1393: mkdir($filepath,0777);
1394: }
1395: }
1396: # Save the file
1397: {
1.500 albertel 1398: #&Apache::lonnet::logthis("Saving to $filepath $file");
1.494 albertel 1399: open(my $fh,'>'.$filepath.'/'.$file);
1.477 raeburn 1400: print $fh $ENV{'form.'.$formname};
1401: close($fh);
1.258 www 1402: }
1.259 www 1403: # Notify homeserver to grep it
1404: #
1.494 albertel 1405: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
1.295 www 1406: if ($fetchresult eq 'ok') {
1.259 www 1407: #
1.258 www 1408: # Return the URL to it
1.494 albertel 1409: return '/uploaded/'.$path.$file;
1.263 www 1410: } else {
1.494 albertel 1411: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
1412: ': '.$fetchresult);
1.263 www 1413: return '/adm/notfound.html';
1414: }
1.493 albertel 1415: }
1416:
1417: sub removeuploadedurl {
1418: my ($url)=@_;
1419: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
1420: return &Apache::lonnet::removeuserfile($uname,$udom,$fname);
1.490 albertel 1421: }
1422:
1423: sub removeuserfile {
1424: my ($docuname,$docudom,$fname)=@_;
1425: my $home=&homeserver($docuname,$docudom);
1426: return &reply("removeuserfile:$docudom/$docuname/$fname",$home);
1.257 www 1427: }
1.15 www 1428:
1.14 www 1429: # ------------------------------------------------------------------------- Log
1430:
1431: sub log {
1432: my ($dom,$nam,$hom,$what)=@_;
1.47 www 1433: return critical("log:$dom:$nam:$what",$hom);
1.157 www 1434: }
1435:
1436: # ------------------------------------------------------------------ Course Log
1.352 www 1437: #
1438: # This routine flushes several buffers of non-mission-critical nature
1439: #
1.157 www 1440:
1441: sub flushcourselogs {
1.352 www 1442: &logthis('Flushing log buffers');
1443: #
1444: # course logs
1445: # This is a log of all transactions in a course, which can be used
1446: # for data mining purposes
1447: #
1448: # It also collects the courseid database, which lists last transaction
1449: # times and course titles for all courseids
1450: #
1451: my %courseidbuffer=();
1.191 harris41 1452: foreach (keys %courselogs) {
1.157 www 1453: my $crsid=$_;
1.352 www 1454: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
1.188 www 1455: &escape($courselogs{$crsid}),
1456: $coursehombuf{$crsid}) eq 'ok') {
1.157 www 1457: delete $courselogs{$crsid};
1458: } else {
1459: &logthis('Failed to flush log buffer for '.$crsid);
1460: if (length($courselogs{$crsid})>40000) {
1461: &logthis("<font color=blue>WARNING: Buffer for ".$crsid.
1462: " exceeded maximum size, deleting.</font>");
1463: delete $courselogs{$crsid};
1464: }
1.352 www 1465: }
1466: if ($courseidbuffer{$coursehombuf{$crsid}}) {
1467: $courseidbuffer{$coursehombuf{$crsid}}.='&'.
1.516 raeburn 1468: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1469: '='.&escape($courseinstcodebuf{$crsid});
1.352 www 1470: } else {
1471: $courseidbuffer{$coursehombuf{$crsid}}=
1.516 raeburn 1472: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1473: '='.&escape($courseinstcodebuf{$crsid});
1.352 www 1474: }
1.191 harris41 1475: }
1.352 www 1476: #
1477: # Write course id database (reverse lookup) to homeserver of courses
1478: # Is used in pickcourse
1479: #
1480: foreach (keys %courseidbuffer) {
1.353 www 1481: &courseidput($hostdom{$_},$courseidbuffer{$_},$_);
1.352 www 1482: }
1483: #
1484: # File accesses
1485: # Writes to the dynamic metadata of resources to get hit counts, etc.
1486: #
1.449 matthew 1487: foreach my $entry (keys(%accesshash)) {
1.458 matthew 1488: if ($entry =~ /___count$/) {
1489: my ($dom,$name);
1490: ($dom,$name,undef)=($entry=~m:___(\w+)/(\w+)/(.*)___count$:);
1491: if (! defined($dom) || $dom eq '' ||
1492: ! defined($name) || $name eq '') {
1493: my $cid = $ENV{'request.course.id'};
1494: $dom = $ENV{'request.'.$cid.'.domain'};
1495: $name = $ENV{'request.'.$cid.'.num'};
1496: }
1.450 matthew 1497: my $value = $accesshash{$entry};
1498: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
1499: my %temphash=($url => $value);
1.449 matthew 1500: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
1501: if ($result eq 'ok') {
1502: delete $accesshash{$entry};
1503: } elsif ($result eq 'unknown_cmd') {
1504: # Target server has old code running on it.
1.450 matthew 1505: my %temphash=($entry => $value);
1.449 matthew 1506: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1507: delete $accesshash{$entry};
1508: }
1509: }
1510: } else {
1.458 matthew 1511: my ($dom,$name) = ($entry=~m:___(\w+)/(\w+)/(.*)___(\w+)$:);
1.450 matthew 1512: my %temphash=($entry => $accesshash{$entry});
1.449 matthew 1513: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1514: delete $accesshash{$entry};
1515: }
1.185 www 1516: }
1.191 harris41 1517: }
1.352 www 1518: #
1519: # Roles
1520: # Reverse lookup of user roles for course faculty/staff and co-authorship
1521: #
1.349 www 1522: foreach (keys %userrolehash) {
1523: my $entry=$_;
1.351 www 1524: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
1.349 www 1525: split(/\:/,$entry);
1526: if (&Apache::lonnet::put('nohist_userroles',
1.351 www 1527: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
1.349 www 1528: $rudom,$runame) eq 'ok') {
1529: delete $userrolehash{$entry};
1530: }
1531: }
1.186 www 1532: $dumpcount++;
1.157 www 1533: }
1534:
1535: sub courselog {
1536: my $what=shift;
1.158 www 1537: $what=time.':'.$what;
1.157 www 1538: unless ($ENV{'request.course.id'}) { return ''; }
1.188 www 1539: $coursedombuf{$ENV{'request.course.id'}}=
1.352 www 1540: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1541: $coursenumbuf{$ENV{'request.course.id'}}=
1.188 www 1542: $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1543: $coursehombuf{$ENV{'request.course.id'}}=
1544: $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.352 www 1545: $coursedescrbuf{$ENV{'request.course.id'}}=
1546: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.516 raeburn 1547: $courseinstcodebuf{$ENV{'request.course.id'}}=
1548: $ENV{'course.'.$ENV{'request.course.id'}.'.internal.coursecode'};
1.157 www 1549: if (defined $courselogs{$ENV{'request.course.id'}}) {
1550: $courselogs{$ENV{'request.course.id'}}.='&'.$what;
1551: } else {
1552: $courselogs{$ENV{'request.course.id'}}.=$what;
1553: }
1.458 matthew 1554: if (length($courselogs{$ENV{'request.course.id'}})>4048) {
1.157 www 1555: &flushcourselogs();
1556: }
1.158 www 1557: }
1558:
1559: sub courseacclog {
1560: my $fnsymb=shift;
1561: unless ($ENV{'request.course.id'}) { return ''; }
1562: my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.408 www 1563: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|page)$/) {
1.187 www 1564: $what.=':POST';
1.191 harris41 1565: foreach (keys %ENV) {
1.158 www 1566: if ($_=~/^form\.(.*)/) {
1567: $what.=':'.$1.'='.$ENV{$_};
1568: }
1.191 harris41 1569: }
1.158 www 1570: }
1571: &courselog($what);
1.149 www 1572: }
1573:
1.185 www 1574: sub countacc {
1575: my $url=&declutter(shift);
1.458 matthew 1576: return if (! defined($url) || $url eq '');
1.185 www 1577: unless ($ENV{'request.course.id'}) { return ''; }
1578: $accesshash{$ENV{'request.course.id'}.'___'.$url.'___course'}=1;
1.281 www 1579: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
1.450 matthew 1580: $accesshash{$key}++;
1.185 www 1581: }
1.349 www 1582:
1.361 www 1583: sub linklog {
1584: my ($from,$to)=@_;
1585: $from=&declutter($from);
1586: $to=&declutter($to);
1587: $accesshash{$from.'___'.$to.'___comefrom'}=1;
1588: $accesshash{$to.'___'.$from.'___goto'}=1;
1589: }
1590:
1.349 www 1591: sub userrolelog {
1592: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
1593: if (($trole=~/^ca/) || ($trole=~/^in/) ||
1594: ($trole=~/^cc/) || ($trole=~/^ep/) ||
1.469 www 1595: ($trole=~/^cr/) || ($trole=~/^ta/)) {
1.350 www 1596: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
1597: $userrolehash
1598: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
1.349 www 1599: =$tend.':'.$tstart;
1600: }
1.351 www 1601: }
1602:
1603: sub get_course_adv_roles {
1604: my $cid=shift;
1605: $cid=$ENV{'request.course.id'} unless (defined($cid));
1606: my %coursehash=&coursedescription($cid);
1.470 www 1607: my %nothide=();
1608: foreach (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
1609: $nothide{join(':',split(/[\@\:]/,$_))}=1;
1610: }
1.351 www 1611: my %returnhash=();
1612: my %dumphash=
1613: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
1614: my $now=time;
1615: foreach (keys %dumphash) {
1616: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1617: if (($tstart) && ($tstart<0)) { next; }
1618: if (($tend) && ($tend<$now)) { next; }
1619: if (($tstart) && ($now<$tstart)) { next; }
1620: my ($role,$username,$domain,$section)=split(/\:/,$_);
1.470 www 1621: if ((&privileged($username,$domain)) &&
1622: (!$nothide{$username.':'.$domain})) { next; }
1.351 www 1623: my $key=&plaintext($role);
1624: if ($section) { $key.=' (Sec/Grp '.$section.')'; }
1625: if ($returnhash{$key}) {
1626: $returnhash{$key}.=','.$username.':'.$domain;
1627: } else {
1628: $returnhash{$key}=$username.':'.$domain;
1629: }
1.400 www 1630: }
1631: return %returnhash;
1632: }
1633:
1634: sub get_my_roles {
1635: my ($uname,$udom)=@_;
1636: unless (defined($uname)) { $uname=$ENV{'user.name'}; }
1637: unless (defined($udom)) { $udom=$ENV{'user.domain'}; }
1638: my %dumphash=
1639: &dump('nohist_userroles',$udom,$uname);
1640: my %returnhash=();
1641: my $now=time;
1642: foreach (keys %dumphash) {
1643: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1644: if (($tstart) && ($tstart<0)) { next; }
1645: if (($tend) && ($tend<$now)) { next; }
1646: if (($tstart) && ($now<$tstart)) { next; }
1647: my ($role,$username,$domain,$section)=split(/\:/,$_);
1648: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
1.373 www 1649: }
1650: return %returnhash;
1.399 www 1651: }
1652:
1653: # ----------------------------------------------------- Frontpage Announcements
1654: #
1655: #
1656:
1657: sub postannounce {
1658: my ($server,$text)=@_;
1659: unless (&allowed('psa',$hostdom{$server})) { return 'refused'; }
1660: unless ($text=~/\w/) { $text=''; }
1661: return &reply('setannounce:'.&escape($text),$server);
1662: }
1663:
1664: sub getannounce {
1.448 albertel 1665:
1666: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
1.399 www 1667: my $announcement='';
1668: while (<$fh>) { $announcement .=$_; }
1.448 albertel 1669: close($fh);
1.399 www 1670: if ($announcement=~/\w/) {
1671: return
1672: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
1.518 albertel 1673: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
1.399 www 1674: } else {
1675: return '';
1676: }
1677: } else {
1678: return '';
1679: }
1.351 www 1680: }
1.353 www 1681:
1682: # ---------------------------------------------------------- Course ID routines
1683: # Deal with domain's nohist_courseid.db files
1684: #
1685:
1686: sub courseidput {
1687: my ($domain,$what,$coursehome)=@_;
1688: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
1689: }
1690:
1691: sub courseiddump {
1.511 raeburn 1692: my ($domfilter,$descfilter,$sincefilter,$hostidflag,$hostidref)=@_;
1.353 www 1693: my %returnhash=();
1.355 www 1694: unless ($domfilter) { $domfilter=''; }
1.353 www 1695: foreach my $tryserver (keys %libserv) {
1.511 raeburn 1696: if ( ($hostidflag == 1 && grep/^$tryserver$/,@{$hostidref}) || (!defined($hostidflag)) ) {
1.506 raeburn 1697: if ((!$domfilter) || ($hostdom{$tryserver} eq $domfilter)) {
1698: foreach (
1699: split(/\&/,&reply('courseiddump:'.$hostdom{$tryserver}.':'.
1.354 www 1700: $sincefilter.':'.&escape($descfilter),
1701: $tryserver))) {
1.506 raeburn 1702: my ($key,$value)=split(/\=/,$_);
1703: if (($key) && ($value)) {
1.516 raeburn 1704: $returnhash{&unescape($key)}=$value;
1.506 raeburn 1705: }
1.353 www 1706: }
1707: }
1708: }
1709: }
1710: return %returnhash;
1711: }
1712:
1713: #
1.149 www 1714: # ----------------------------------------------------------- Check out an item
1715:
1.504 albertel 1716: sub get_first_access {
1717: my ($type,$argsymb)=@_;
1718: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1719: if ($argsymb) { $symb=$argsymb; }
1720: my ($map,$id,$res)=&decode_symb($symb);
1721: if ($type eq 'map') { $res=$map; }
1722: my %times=&get('firstaccesstimes',[$res],$udom,$uname);
1723: return $times{$res};
1724: }
1725:
1726: sub set_first_access {
1727: my ($type)=@_;
1728: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1729: my ($map,$id,$res)=&decode_symb($symb);
1730: if ($type eq 'map') { $res=$map; }
1.505 albertel 1731: my $firstaccess=&get_first_access($type);
1732: if (!$firstaccess) {
1733: return &put('firstaccesstimes',{$res=>time},$udom,$uname);
1734: }
1735: return 'already_set';
1.504 albertel 1736: }
1737:
1.149 www 1738: sub checkout {
1739: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1740: my $now=time;
1741: my $lonhost=$perlvar{'lonHostID'};
1742: my $infostr=&escape(
1.234 www 1743: 'CHECKOUTTOKEN&'.
1.149 www 1744: $tuname.'&'.
1745: $tudom.'&'.
1746: $tcrsid.'&'.
1747: $symb.'&'.
1748: $now.'&'.$ENV{'REMOTE_ADDR'});
1749: my $token=&reply('tmpput:'.$infostr,$lonhost);
1.151 www 1750: if ($token=~/^error\:/) {
1751: &logthis("<font color=blue>WARNING: ".
1752: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
1753: "</font>");
1754: return '';
1755: }
1756:
1.149 www 1757: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
1758: $token=~tr/a-z/A-Z/;
1759:
1.153 www 1760: my %infohash=('resource.0.outtoken' => $token,
1761: 'resource.0.checkouttime' => $now,
1762: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
1.149 www 1763:
1764: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1765: return '';
1.151 www 1766: } else {
1767: &logthis("<font color=blue>WARNING: ".
1768: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
1769: "</font>");
1.149 www 1770: }
1771:
1772: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1773: &escape('Checkout '.$infostr.' - '.
1774: $token)) ne 'ok') {
1775: return '';
1.151 www 1776: } else {
1777: &logthis("<font color=blue>WARNING: ".
1778: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
1779: "</font>");
1.149 www 1780: }
1.151 www 1781: return $token;
1.149 www 1782: }
1783:
1784: # ------------------------------------------------------------ Check in an item
1785:
1786: sub checkin {
1787: my $token=shift;
1.150 www 1788: my $now=time;
1789: my ($ta,$tb,$lonhost)=split(/\*/,$token);
1790: $lonhost=~tr/A-Z/a-z/;
1791: my $dtoken=$ta.'_'.$hostip{$lonhost}.'_'.$tb;
1792: $dtoken=~s/\W/\_/g;
1.234 www 1793: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
1.150 www 1794: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
1795:
1.154 www 1796: unless (($tuname) && ($tudom)) {
1797: &logthis('Check in '.$token.' ('.$dtoken.') failed');
1798: return '';
1799: }
1800:
1801: unless (&allowed('mgr',$tcrsid)) {
1802: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
1803: $ENV{'user.name'}.' - '.$ENV{'user.domain'});
1804: return '';
1805: }
1806:
1.153 www 1807: my %infohash=('resource.0.intoken' => $token,
1808: 'resource.0.checkintime' => $now,
1809: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
1.150 www 1810:
1811: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1812: return '';
1813: }
1814:
1815: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1816: &escape('Checkin - '.$token)) ne 'ok') {
1817: return '';
1818: }
1819:
1820: return ($symb,$tuname,$tudom,$tcrsid);
1.110 www 1821: }
1822:
1823: # --------------------------------------------- Set Expire Date for Spreadsheet
1824:
1825: sub expirespread {
1826: my ($uname,$udom,$stype,$usymb)=@_;
1827: my $cid=$ENV{'request.course.id'};
1828: if ($cid) {
1829: my $now=time;
1830: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
1831: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1832: $ENV{'course.'.$cid.'.num'}.
1833: ':nohist_expirationdates:'.
1834: &escape($key).'='.$now,
1835: $ENV{'course.'.$cid.'.home'})
1836: }
1837: return 'ok';
1.14 www 1838: }
1839:
1.109 www 1840: # ----------------------------------------------------- Devalidate Spreadsheets
1841:
1842: sub devalidate {
1.325 www 1843: my ($symb,$uname,$udom)=@_;
1.109 www 1844: my $cid=$ENV{'request.course.id'};
1845: if ($cid) {
1.391 matthew 1846: # delete the stored spreadsheets for
1847: # - the student level sheet of this user in course's homespace
1848: # - the assessment level sheet for this resource
1849: # for this user in user's homespace
1.325 www 1850: my $key=$uname.':'.$udom.':';
1.109 www 1851: my $status=
1.299 matthew 1852: &del('nohist_calculatedsheets',
1.391 matthew 1853: [$key.'studentcalc:'],
1.133 albertel 1854: $ENV{'course.'.$cid.'.domain'},
1855: $ENV{'course.'.$cid.'.num'})
1856: .' '.
1857: &del('nohist_calculatedsheets_'.$cid,
1.391 matthew 1858: [$key.'assesscalc:'.$symb],$udom,$uname);
1.109 www 1859: unless ($status eq 'ok ok') {
1860: &logthis('Could not devalidate spreadsheet '.
1.325 www 1861: $uname.' at '.$udom.' for '.
1.109 www 1862: $symb.': '.$status);
1.133 albertel 1863: }
1.109 www 1864: }
1865: }
1866:
1.265 albertel 1867: sub get_scalar {
1868: my ($string,$end) = @_;
1869: my $value;
1870: if ($$string =~ s/^([^&]*?)($end)/$2/) {
1871: $value = $1;
1872: } elsif ($$string =~ s/^([^&]*?)&//) {
1873: $value = $1;
1874: }
1875: return &unescape($value);
1876: }
1877:
1878: sub array2str {
1879: my (@array) = @_;
1880: my $result=&arrayref2str(\@array);
1881: $result=~s/^__ARRAY_REF__//;
1882: $result=~s/__END_ARRAY_REF__$//;
1883: return $result;
1884: }
1885:
1.204 albertel 1886: sub arrayref2str {
1887: my ($arrayref) = @_;
1.265 albertel 1888: my $result='__ARRAY_REF__';
1.204 albertel 1889: foreach my $elem (@$arrayref) {
1.265 albertel 1890: if(ref($elem) eq 'ARRAY') {
1891: $result.=&arrayref2str($elem).'&';
1892: } elsif(ref($elem) eq 'HASH') {
1893: $result.=&hashref2str($elem).'&';
1894: } elsif(ref($elem)) {
1895: #print("Got a ref of ".(ref($elem))." skipping.");
1.204 albertel 1896: } else {
1897: $result.=&escape($elem).'&';
1898: }
1899: }
1900: $result=~s/\&$//;
1.265 albertel 1901: $result .= '__END_ARRAY_REF__';
1.204 albertel 1902: return $result;
1903: }
1904:
1.168 albertel 1905: sub hash2str {
1.204 albertel 1906: my (%hash) = @_;
1907: my $result=&hashref2str(\%hash);
1.265 albertel 1908: $result=~s/^__HASH_REF__//;
1909: $result=~s/__END_HASH_REF__$//;
1.204 albertel 1910: return $result;
1911: }
1912:
1913: sub hashref2str {
1914: my ($hashref)=@_;
1.265 albertel 1915: my $result='__HASH_REF__';
1.495 albertel 1916: foreach (sort(keys(%$hashref))) {
1.204 albertel 1917: if (ref($_) eq 'ARRAY') {
1.265 albertel 1918: $result.=&arrayref2str($_).'=';
1.204 albertel 1919: } elsif (ref($_) eq 'HASH') {
1.265 albertel 1920: $result.=&hashref2str($_).'=';
1.204 albertel 1921: } elsif (ref($_)) {
1.265 albertel 1922: $result.='=';
1923: #print("Got a ref of ".(ref($_))." skipping.");
1.204 albertel 1924: } else {
1.265 albertel 1925: if ($_) {$result.=&escape($_).'=';} else { last; }
1.204 albertel 1926: }
1927:
1.265 albertel 1928: if(ref($hashref->{$_}) eq 'ARRAY') {
1929: $result.=&arrayref2str($hashref->{$_}).'&';
1930: } elsif(ref($hashref->{$_}) eq 'HASH') {
1931: $result.=&hashref2str($hashref->{$_}).'&';
1932: } elsif(ref($hashref->{$_})) {
1933: $result.='&';
1934: #print("Got a ref of ".(ref($hashref->{$_}))." skipping.");
1.204 albertel 1935: } else {
1.265 albertel 1936: $result.=&escape($hashref->{$_}).'&';
1.204 albertel 1937: }
1938: }
1.168 albertel 1939: $result=~s/\&$//;
1.265 albertel 1940: $result .= '__END_HASH_REF__';
1.168 albertel 1941: return $result;
1942: }
1943:
1944: sub str2hash {
1.265 albertel 1945: my ($string)=@_;
1946: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
1947: return %$hash;
1948: }
1949:
1950: sub str2hashref {
1.168 albertel 1951: my ($string) = @_;
1.265 albertel 1952:
1953: my %hash;
1954:
1955: if($string !~ /^__HASH_REF__/) {
1956: if (! ($string eq '' || !defined($string))) {
1957: $hash{'error'}='Not hash reference';
1958: }
1959: return (\%hash, $string);
1960: }
1961:
1962: $string =~ s/^__HASH_REF__//;
1963:
1964: while($string !~ /^__END_HASH_REF__/) {
1965: #key
1966: my $key='';
1967: if($string =~ /^__HASH_REF__/) {
1968: ($key, $string)=&str2hashref($string);
1969: if(defined($key->{'error'})) {
1970: $hash{'error'}='Bad data';
1971: return (\%hash, $string);
1972: }
1973: } elsif($string =~ /^__ARRAY_REF__/) {
1974: ($key, $string)=&str2arrayref($string);
1975: if($key->[0] eq 'Array reference error') {
1976: $hash{'error'}='Bad data';
1977: return (\%hash, $string);
1978: }
1979: } else {
1980: $string =~ s/^(.*?)=//;
1.267 albertel 1981: $key=&unescape($1);
1.265 albertel 1982: }
1983: $string =~ s/^=//;
1984:
1985: #value
1986: my $value='';
1987: if($string =~ /^__HASH_REF__/) {
1988: ($value, $string)=&str2hashref($string);
1989: if(defined($value->{'error'})) {
1990: $hash{'error'}='Bad data';
1991: return (\%hash, $string);
1992: }
1993: } elsif($string =~ /^__ARRAY_REF__/) {
1994: ($value, $string)=&str2arrayref($string);
1995: if($value->[0] eq 'Array reference error') {
1996: $hash{'error'}='Bad data';
1997: return (\%hash, $string);
1998: }
1999: } else {
2000: $value=&get_scalar(\$string,'__END_HASH_REF__');
2001: }
2002: $string =~ s/^&//;
2003:
2004: $hash{$key}=$value;
1.204 albertel 2005: }
1.265 albertel 2006:
2007: $string =~ s/^__END_HASH_REF__//;
2008:
2009: return (\%hash, $string);
1.204 albertel 2010: }
2011:
2012: sub str2array {
1.265 albertel 2013: my ($string)=@_;
2014: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
2015: return @$array;
2016: }
2017:
2018: sub str2arrayref {
1.204 albertel 2019: my ($string) = @_;
1.265 albertel 2020: my @array;
2021:
2022: if($string !~ /^__ARRAY_REF__/) {
2023: if (! ($string eq '' || !defined($string))) {
2024: $array[0]='Array reference error';
2025: }
2026: return (\@array, $string);
2027: }
2028:
2029: $string =~ s/^__ARRAY_REF__//;
2030:
2031: while($string !~ /^__END_ARRAY_REF__/) {
2032: my $value='';
2033: if($string =~ /^__HASH_REF__/) {
2034: ($value, $string)=&str2hashref($string);
2035: if(defined($value->{'error'})) {
2036: $array[0] ='Array reference error';
2037: return (\@array, $string);
2038: }
2039: } elsif($string =~ /^__ARRAY_REF__/) {
2040: ($value, $string)=&str2arrayref($string);
2041: if($value->[0] eq 'Array reference error') {
2042: $array[0] ='Array reference error';
2043: return (\@array, $string);
2044: }
2045: } else {
2046: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
2047: }
2048: $string =~ s/^&//;
2049:
2050: push(@array, $value);
1.191 harris41 2051: }
1.265 albertel 2052:
2053: $string =~ s/^__END_ARRAY_REF__//;
2054:
2055: return (\@array, $string);
1.168 albertel 2056: }
2057:
1.167 albertel 2058: # -------------------------------------------------------------------Temp Store
2059:
1.168 albertel 2060: sub tmpreset {
2061: my ($symb,$namespace,$domain,$stuname) = @_;
2062: if (!$symb) {
2063: $symb=&symbread();
1.380 albertel 2064: if (!$symb) { $symb= $ENV{'request.url'}; }
1.168 albertel 2065: }
2066: $symb=escape($symb);
2067:
2068: if (!$namespace) { $namespace=$ENV{'request.state'}; }
2069: $namespace=~s/\//\_/g;
2070: $namespace=~s/\W//g;
2071:
2072: #FIXME needs to do something for /pub resources
2073: if (!$domain) { $domain=$ENV{'user.domain'}; }
2074: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2075: my $path=$perlvar{'lonDaemons'}.'/tmp';
2076: my %hash;
2077: if (tie(%hash,'GDBM_File',
2078: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2079: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2080: foreach my $key (keys %hash) {
1.180 albertel 2081: if ($key=~ /:$symb/) {
1.168 albertel 2082: delete($hash{$key});
2083: }
2084: }
2085: }
2086: }
2087:
1.167 albertel 2088: sub tmpstore {
1.168 albertel 2089: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2090:
2091: if (!$symb) {
2092: $symb=&symbread();
2093: if (!$symb) { $symb= $ENV{'request.url'}; }
2094: }
2095: $symb=escape($symb);
2096:
2097: if (!$namespace) {
2098: # I don't think we would ever want to store this for a course.
2099: # it seems this will only be used if we don't have a course.
2100: #$namespace=$ENV{'request.course.id'};
2101: #if (!$namespace) {
2102: $namespace=$ENV{'request.state'};
2103: #}
2104: }
2105: $namespace=~s/\//\_/g;
2106: $namespace=~s/\W//g;
2107: #FIXME needs to do something for /pub resources
2108: if (!$domain) { $domain=$ENV{'user.domain'}; }
2109: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2110: my $now=time;
2111: my %hash;
2112: my $path=$perlvar{'lonDaemons'}.'/tmp';
2113: if (tie(%hash,'GDBM_File',
2114: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2115: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2116: $hash{"version:$symb"}++;
2117: my $version=$hash{"version:$symb"};
2118: my $allkeys='';
2119: foreach my $key (keys(%$storehash)) {
2120: $allkeys.=$key.':';
2121: $hash{"$version:$symb:$key"}=$$storehash{$key};
2122: }
2123: $hash{"$version:$symb:timestamp"}=$now;
2124: $allkeys.='timestamp';
2125: $hash{"$version:keys:$symb"}=$allkeys;
2126: if (untie(%hash)) {
2127: return 'ok';
2128: } else {
2129: return "error:$!";
2130: }
2131: } else {
2132: return "error:$!";
2133: }
2134: }
1.167 albertel 2135:
1.168 albertel 2136: # -----------------------------------------------------------------Temp Restore
1.167 albertel 2137:
1.168 albertel 2138: sub tmprestore {
2139: my ($symb,$namespace,$domain,$stuname) = @_;
1.167 albertel 2140:
1.168 albertel 2141: if (!$symb) {
2142: $symb=&symbread();
2143: if (!$symb) { $symb= $ENV{'request.url'}; }
2144: }
2145: $symb=escape($symb);
2146:
2147: if (!$namespace) { $namespace=$ENV{'request.state'}; }
2148: #FIXME needs to do something for /pub resources
2149: if (!$domain) { $domain=$ENV{'user.domain'}; }
2150: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2151:
2152: my %returnhash;
2153: $namespace=~s/\//\_/g;
2154: $namespace=~s/\W//g;
2155: my %hash;
2156: my $path=$perlvar{'lonDaemons'}.'/tmp';
2157: if (tie(%hash,'GDBM_File',
2158: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2159: &GDBM_READER(),0640)) {
1.168 albertel 2160: my $version=$hash{"version:$symb"};
2161: $returnhash{'version'}=$version;
2162: my $scope;
2163: for ($scope=1;$scope<=$version;$scope++) {
2164: my $vkeys=$hash{"$scope:keys:$symb"};
2165: my @keys=split(/:/,$vkeys);
2166: my $key;
2167: $returnhash{"$scope:keys"}=$vkeys;
2168: foreach $key (@keys) {
2169: $returnhash{"$scope:$key"}=$hash{"$scope:$symb:$key"};
2170: $returnhash{"$key"}=$hash{"$scope:$symb:$key"};
1.167 albertel 2171: }
2172: }
1.168 albertel 2173: if (!(untie(%hash))) {
2174: return "error:$!";
2175: }
2176: } else {
2177: return "error:$!";
2178: }
2179: return %returnhash;
1.167 albertel 2180: }
2181:
1.9 www 2182: # ----------------------------------------------------------------------- Store
2183:
2184: sub store {
1.124 www 2185: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2186: my $home='';
2187:
1.168 albertel 2188: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2189:
1.213 www 2190: $symb=&symbclean($symb);
1.122 albertel 2191: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2192:
1.325 www 2193: if (!$domain) { $domain=$ENV{'user.domain'}; }
2194: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2195:
2196: &devalidate($symb,$stuname,$domain);
1.109 www 2197:
2198: $symb=escape($symb);
1.187 www 2199: if (!$namespace) {
2200: unless ($namespace=$ENV{'request.course.id'}) {
2201: return '';
2202: }
2203: }
1.122 albertel 2204: if (!$home) { $home=$ENV{'user.home'}; }
1.447 www 2205:
2206: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2207: $$storehash{'host'}=$perlvar{'lonHostID'};
2208:
1.12 www 2209: my $namevalue='';
1.191 harris41 2210: foreach (keys %$storehash) {
1.122 albertel 2211: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 2212: }
1.12 www 2213: $namevalue=~s/\&$//;
1.187 www 2214: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
1.124 www 2215: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.9 www 2216: }
2217:
1.47 www 2218: # -------------------------------------------------------------- Critical Store
2219:
2220: sub cstore {
1.124 www 2221: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2222: my $home='';
2223:
1.168 albertel 2224: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2225:
1.213 www 2226: $symb=&symbclean($symb);
1.122 albertel 2227: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2228:
1.325 www 2229: if (!$domain) { $domain=$ENV{'user.domain'}; }
2230: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2231:
2232: &devalidate($symb,$stuname,$domain);
1.109 www 2233:
2234: $symb=escape($symb);
1.187 www 2235: if (!$namespace) {
2236: unless ($namespace=$ENV{'request.course.id'}) {
2237: return '';
2238: }
2239: }
1.122 albertel 2240: if (!$home) { $home=$ENV{'user.home'}; }
1.447 www 2241:
2242: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2243: $$storehash{'host'}=$perlvar{'lonHostID'};
1.122 albertel 2244:
1.47 www 2245: my $namevalue='';
1.191 harris41 2246: foreach (keys %$storehash) {
1.122 albertel 2247: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 2248: }
1.47 www 2249: $namevalue=~s/\&$//;
1.187 www 2250: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
1.188 www 2251: return critical
2252: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.47 www 2253: }
2254:
1.9 www 2255: # --------------------------------------------------------------------- Restore
2256:
2257: sub restore {
1.124 www 2258: my ($symb,$namespace,$domain,$stuname) = @_;
2259: my $home='';
2260:
1.168 albertel 2261: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2262:
1.122 albertel 2263: if (!$symb) {
2264: unless ($symb=escape(&symbread())) { return ''; }
2265: } else {
1.213 www 2266: $symb=&escape(&symbclean($symb));
1.122 albertel 2267: }
1.188 www 2268: if (!$namespace) {
2269: unless ($namespace=$ENV{'request.course.id'}) {
2270: return '';
2271: }
2272: }
1.122 albertel 2273: if (!$domain) { $domain=$ENV{'user.domain'}; }
2274: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2275: if (!$home) { $home=$ENV{'user.home'}; }
2276: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
2277:
1.12 www 2278: my %returnhash=();
1.191 harris41 2279: foreach (split(/\&/,$answer)) {
1.12 www 2280: my ($name,$value)=split(/\=/,$_);
2281: $returnhash{&unescape($name)}=&unescape($value);
1.191 harris41 2282: }
1.75 www 2283: my $version;
2284: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.191 harris41 2285: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1.75 www 2286: $returnhash{$_}=$returnhash{$version.':'.$_};
1.191 harris41 2287: }
1.75 www 2288: }
1.13 www 2289: return %returnhash;
1.34 www 2290: }
2291:
2292: # ---------------------------------------------------------- Course Description
2293:
2294: sub coursedescription {
2295: my $courseid=shift;
2296: $courseid=~s/^\///;
1.49 www 2297: $courseid=~s/\_/\//g;
1.34 www 2298: my ($cdomain,$cnum)=split(/\//,$courseid);
1.129 albertel 2299: my $chome=&homeserver($cnum,$cdomain);
1.302 albertel 2300: my $normalid=$cdomain.'_'.$cnum;
2301: # need to always cache even if we get errors otherwise we keep
2302: # trying and trying and trying to get the course description.
2303: my %envhash=();
2304: my %returnhash=();
2305: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.34 www 2306: if ($chome ne 'no_host') {
1.302 albertel 2307: %returnhash=&dump('environment',$cdomain,$cnum);
1.129 albertel 2308: if (!exists($returnhash{'con_lost'})) {
2309: $returnhash{'home'}= $chome;
2310: $returnhash{'domain'} = $cdomain;
2311: $returnhash{'num'} = $cnum;
1.130 albertel 2312: while (my ($name,$value) = each %returnhash) {
1.53 www 2313: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.129 albertel 2314: }
1.270 www 2315: $returnhash{'url'}=&clutter($returnhash{'url'});
1.34 www 2316: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 2317: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.60 www 2318: $envhash{'course.'.$normalid.'.home'}=$chome;
2319: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
2320: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.34 www 2321: }
2322: }
1.302 albertel 2323: &appenv(%envhash);
2324: return %returnhash;
1.461 www 2325: }
2326:
2327: # -------------------------------------------------See if a user is privileged
2328:
2329: sub privileged {
2330: my ($username,$domain)=@_;
2331: my $rolesdump=&reply("dump:$domain:$username:roles",
2332: &homeserver($username,$domain));
2333: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
2334: my $now=time;
2335: if ($rolesdump ne '') {
2336: foreach (split(/&/,$rolesdump)) {
2337: if ($_!~/^rolesdef\&/) {
2338: my ($area,$role)=split(/=/,$_);
2339: $area=~s/\_\w\w$//;
2340: my ($trole,$tend,$tstart)=split(/_/,$role);
2341: if (($trole eq 'dc') || ($trole eq 'su')) {
2342: my $active=1;
2343: if ($tend) {
2344: if ($tend<$now) { $active=0; }
2345: }
2346: if ($tstart) {
2347: if ($tstart>$now) { $active=0; }
2348: }
2349: if ($active) { return 1; }
2350: }
2351: }
2352: }
2353: }
2354: return 0;
1.9 www 2355: }
1.1 albertel 2356:
1.103 harris41 2357: # -------------------------------------------------------- Get user privileges
1.11 www 2358:
2359: sub rolesinit {
2360: my ($domain,$username,$authhost)=@_;
2361: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 2362: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 2363: my %allroles=();
2364: my %thesepriv=();
2365: my $now=time;
1.21 www 2366: my $userroles="user.login.time=$now\n";
1.11 www 2367: my $thesestr;
2368:
2369: if ($rolesdump ne '') {
1.191 harris41 2370: foreach (split(/&/,$rolesdump)) {
1.21 www 2371: if ($_!~/^rolesdef\&/) {
1.11 www 2372: my ($area,$role)=split(/=/,$_);
1.21 www 2373: $area=~s/\_\w\w$//;
1.11 www 2374: my ($trole,$tend,$tstart)=split(/_/,$role);
1.21 www 2375: $userroles.='user.role.'.$trole.'.'.$area.'='.
2376: $tstart.'.'.$tend."\n";
1.349 www 2377: # log the associated role with the area
2378: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
1.11 www 2379: if ($tend!=0) {
2380: if ($tend<$now) {
2381: $trole='';
2382: }
2383: }
2384: if ($tstart!=0) {
2385: if ($tstart>$now) {
2386: $trole='';
2387: }
2388: }
2389: if (($area ne '') && ($trole ne '')) {
1.347 albertel 2390: my $spec=$trole.'.'.$area;
2391: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
2392: if ($trole =~ /^cr\//) {
2393: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
1.392 www 2394: my $homsvr=homeserver($rauthor,$rdomain);
1.347 albertel 2395: if ($hostname{$homsvr} ne '') {
1.392 www 2396: my ($rdummy,$roledef)=
2397: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
2398:
2399: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
1.347 albertel 2400: my ($syspriv,$dompriv,$coursepriv)=
1.392 www 2401: split(/\_/,$roledef);
1.347 albertel 2402: if (defined($syspriv)) {
2403: $allroles{'cm./'}.=':'.$syspriv;
2404: $allroles{$spec.'./'}.=':'.$syspriv;
2405: }
2406: if ($tdomain ne '') {
2407: if (defined($dompriv)) {
2408: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
2409: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
2410: }
2411: if ($trest ne '') {
2412: if (defined($coursepriv)) {
2413: $allroles{'cm.'.$area}.=':'.$coursepriv;
2414: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
2415: }
2416: }
2417: }
2418: }
2419: }
2420: } else {
2421: if (defined($pr{$trole.':s'})) {
2422: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
2423: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
2424: }
2425: if ($tdomain ne '') {
2426: if (defined($pr{$trole.':d'})) {
2427: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2428: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2429: }
2430: if ($trest ne '') {
2431: if (defined($pr{$trole.':c'})) {
2432: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
2433: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
2434: }
2435: }
2436: }
2437: }
1.12 www 2438: }
2439: }
1.191 harris41 2440: }
1.125 www 2441: my $adv=0;
1.128 www 2442: my $author=0;
1.191 harris41 2443: foreach (keys %allroles) {
1.11 www 2444: %thesepriv=();
1.146 www 2445: if (($_!~/^st/) && ($_!~/^ta/) && ($_!~/^cm/)) { $adv=1; }
1.128 www 2446: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
1.191 harris41 2447: foreach (split(/:/,$allroles{$_})) {
1.11 www 2448: if ($_ ne '') {
1.103 harris41 2449: my ($privilege,$restrictions)=split(/&/,$_);
1.11 www 2450: if ($restrictions eq '') {
1.103 harris41 2451: $thesepriv{$privilege}='F';
1.11 www 2452: } else {
1.103 harris41 2453: if ($thesepriv{$privilege} ne 'F') {
2454: $thesepriv{$privilege}.=$restrictions;
1.11 www 2455: }
2456: }
2457: }
1.191 harris41 2458: }
1.11 www 2459: $thesestr='';
1.191 harris41 2460: foreach (keys %thesepriv) { $thesestr.=':'.$_.'&'.$thesepriv{$_}; }
1.11 www 2461: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
1.191 harris41 2462: }
1.128 www 2463: $userroles.='user.adv='.$adv."\n".
2464: 'user.author='.$author."\n";
1.126 www 2465: $ENV{'user.adv'}=$adv;
1.11 www 2466: }
2467: return $userroles;
2468: }
2469:
1.12 www 2470: # --------------------------------------------------------------- get interface
2471:
2472: sub get {
1.131 albertel 2473: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2474: my $items='';
1.191 harris41 2475: foreach (@$storearr) {
1.12 www 2476: $items.=escape($_).'&';
1.191 harris41 2477: }
1.12 www 2478: $items=~s/\&$//;
1.131 albertel 2479: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2480: if (!$uname) { $uname=$ENV{'user.name'}; }
2481: my $uhome=&homeserver($uname,$udomain);
2482:
1.133 albertel 2483: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2484: my @pairs=split(/\&/,$rep);
1.273 albertel 2485: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2486: return @pairs;
2487: }
1.15 www 2488: my %returnhash=();
1.42 www 2489: my $i=0;
1.191 harris41 2490: foreach (@$storearr) {
1.42 www 2491: $returnhash{$_}=unescape($pairs[$i]);
2492: $i++;
1.191 harris41 2493: }
1.15 www 2494: return %returnhash;
1.27 www 2495: }
2496:
2497: # --------------------------------------------------------------- del interface
2498:
2499: sub del {
1.133 albertel 2500: my ($namespace,$storearr,$udomain,$uname)=@_;
1.27 www 2501: my $items='';
1.191 harris41 2502: foreach (@$storearr) {
1.27 www 2503: $items.=escape($_).'&';
1.191 harris41 2504: }
1.27 www 2505: $items=~s/\&$//;
1.133 albertel 2506: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2507: if (!$uname) { $uname=$ENV{'user.name'}; }
2508: my $uhome=&homeserver($uname,$udomain);
2509:
2510: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2511: }
2512:
2513: # -------------------------------------------------------------- dump interface
2514:
2515: sub dump {
1.193 www 2516: my ($namespace,$udomain,$uname,$regexp)=@_;
1.129 albertel 2517: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2518: if (!$uname) { $uname=$ENV{'user.name'}; }
2519: my $uhome=&homeserver($uname,$udomain);
1.193 www 2520: if ($regexp) {
2521: $regexp=&escape($regexp);
2522: } else {
2523: $regexp='.';
2524: }
2525: my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
1.12 www 2526: my @pairs=split(/\&/,$rep);
2527: my %returnhash=();
1.191 harris41 2528: foreach (@pairs) {
1.12 www 2529: my ($key,$value)=split(/=/,$_);
1.29 www 2530: $returnhash{unescape($key)}=unescape($value);
1.318 matthew 2531: }
2532: return %returnhash;
1.407 www 2533: }
2534:
2535: # -------------------------------------------------------------- keys interface
2536:
2537: sub getkeys {
2538: my ($namespace,$udomain,$uname)=@_;
2539: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2540: if (!$uname) { $uname=$ENV{'user.name'}; }
2541: my $uhome=&homeserver($uname,$udomain);
2542: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
2543: my @keyarray=();
2544: foreach (split(/\&/,$rep)) {
2545: push (@keyarray,&unescape($_));
2546: }
2547: return @keyarray;
1.318 matthew 2548: }
2549:
1.319 matthew 2550: # --------------------------------------------------------------- currentdump
2551: sub currentdump {
1.328 matthew 2552: my ($courseid,$sdom,$sname)=@_;
1.326 matthew 2553: $courseid = $ENV{'request.course.id'} if (! defined($courseid));
2554: $sdom = $ENV{'user.domain'} if (! defined($sdom));
2555: $sname = $ENV{'user.name'} if (! defined($sname));
2556: my $uhome = &homeserver($sname,$sdom);
2557: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
1.318 matthew 2558: return if ($rep =~ /^(error:|no_such_host)/);
1.319 matthew 2559: #
1.318 matthew 2560: my %returnhash=();
1.319 matthew 2561: #
2562: if ($rep eq "unknown_cmd") {
2563: # an old lond will not know currentdump
2564: # Do a dump and make it look like a currentdump
1.326 matthew 2565: my @tmp = &dump($courseid,$sdom,$sname,'.');
1.319 matthew 2566: return if ($tmp[0] =~ /^(error:|no_such_host)/);
2567: my %hash = @tmp;
2568: @tmp=();
1.424 matthew 2569: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
1.319 matthew 2570: } else {
2571: my @pairs=split(/\&/,$rep);
2572: foreach (@pairs) {
2573: my ($key,$value)=split(/=/,$_);
2574: my ($symb,$param) = split(/:/,$key);
2575: $returnhash{&unescape($symb)}->{&unescape($param)} =
2576: &unescape($value);
2577: }
1.191 harris41 2578: }
1.12 www 2579: return %returnhash;
1.424 matthew 2580: }
2581:
2582: sub convert_dump_to_currentdump{
2583: my %hash = %{shift()};
2584: my %returnhash;
2585: # Code ripped from lond, essentially. The only difference
2586: # here is the unescaping done by lonnet::dump(). Conceivably
2587: # we might run in to problems with parameter names =~ /^v\./
2588: while (my ($key,$value) = each(%hash)) {
2589: my ($v,$symb,$param) = split(/:/,$key);
2590: next if ($v eq 'version' || $symb eq 'keys');
2591: next if (exists($returnhash{$symb}) &&
2592: exists($returnhash{$symb}->{$param}) &&
2593: $returnhash{$symb}->{'v.'.$param} > $v);
2594: $returnhash{$symb}->{$param}=$value;
2595: $returnhash{$symb}->{'v.'.$param}=$v;
2596: }
2597: #
2598: # Remove all of the keys in the hashes which keep track of
2599: # the version of the parameter.
2600: while (my ($symb,$param_hash) = each(%returnhash)) {
2601: # use a foreach because we are going to delete from the hash.
2602: foreach my $key (keys(%$param_hash)) {
2603: delete($param_hash->{$key}) if ($key =~ /^v\./);
2604: }
2605: }
2606: return \%returnhash;
1.12 www 2607: }
2608:
1.449 matthew 2609: # --------------------------------------------------------------- inc interface
2610:
2611: sub inc {
2612: my ($namespace,$store,$udomain,$uname) = @_;
2613: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2614: if (!$uname) { $uname=$ENV{'user.name'}; }
2615: my $uhome=&homeserver($uname,$udomain);
2616: my $items='';
2617: if (! ref($store)) {
2618: # got a single value, so use that instead
2619: $items = &escape($store).'=&';
2620: } elsif (ref($store) eq 'SCALAR') {
2621: $items = &escape($$store).'=&';
2622: } elsif (ref($store) eq 'ARRAY') {
2623: $items = join('=&',map {&escape($_);} @{$store});
2624: } elsif (ref($store) eq 'HASH') {
2625: while (my($key,$value) = each(%{$store})) {
2626: $items.= &escape($key).'='.&escape($value).'&';
2627: }
2628: }
2629: $items=~s/\&$//;
2630: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
2631: }
2632:
1.12 www 2633: # --------------------------------------------------------------- put interface
2634:
2635: sub put {
1.134 albertel 2636: my ($namespace,$storehash,$udomain,$uname)=@_;
2637: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2638: if (!$uname) { $uname=$ENV{'user.name'}; }
2639: my $uhome=&homeserver($uname,$udomain);
1.12 www 2640: my $items='';
1.191 harris41 2641: foreach (keys %$storehash) {
1.134 albertel 2642: $items.=&escape($_).'='.&escape($$storehash{$_}).'&';
1.191 harris41 2643: }
1.12 www 2644: $items=~s/\&$//;
1.134 albertel 2645: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1.47 www 2646: }
2647:
2648: # ------------------------------------------------------ critical put interface
2649:
2650: sub cput {
1.134 albertel 2651: my ($namespace,$storehash,$udomain,$uname)=@_;
2652: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2653: if (!$uname) { $uname=$ENV{'user.name'}; }
2654: my $uhome=&homeserver($uname,$udomain);
1.47 www 2655: my $items='';
1.191 harris41 2656: foreach (keys %$storehash) {
1.134 albertel 2657: $items.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 2658: }
1.47 www 2659: $items=~s/\&$//;
1.134 albertel 2660: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2661: }
2662:
2663: # -------------------------------------------------------------- eget interface
2664:
2665: sub eget {
1.133 albertel 2666: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2667: my $items='';
1.191 harris41 2668: foreach (@$storearr) {
1.12 www 2669: $items.=escape($_).'&';
1.191 harris41 2670: }
1.12 www 2671: $items=~s/\&$//;
1.133 albertel 2672: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2673: if (!$uname) { $uname=$ENV{'user.name'}; }
2674: my $uhome=&homeserver($uname,$udomain);
2675: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2676: my @pairs=split(/\&/,$rep);
2677: my %returnhash=();
1.42 www 2678: my $i=0;
1.191 harris41 2679: foreach (@$storearr) {
1.42 www 2680: $returnhash{$_}=unescape($pairs[$i]);
2681: $i++;
1.191 harris41 2682: }
1.12 www 2683: return %returnhash;
2684: }
2685:
1.341 www 2686: # ---------------------------------------------- Custom access rule evaluation
2687:
2688: sub customaccess {
2689: my ($priv,$uri)=@_;
1.342 www 2690: my ($urole,$urealm)=split(/\./,$ENV{'request.role'});
1.343 www 2691: $urealm=~s/^\W//;
2692: my ($udom,$ucrs,$usec)=split(/\//,$urealm);
1.341 www 2693: my $access=0;
2694: foreach (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
1.342 www 2695: my ($effect,$realm,$role)=split(/\:/,$_);
1.343 www 2696: if ($role) {
2697: if ($role ne $urole) { next; }
2698: }
2699: foreach (split(/\s*\,\s*/,$realm)) {
2700: my ($tdom,$tcrs,$tsec)=split(/\_/,$_);
2701: if ($tdom) {
2702: if ($tdom ne $udom) { next; }
2703: }
2704: if ($tcrs) {
2705: if ($tcrs ne $ucrs) { next; }
2706: }
2707: if ($tsec) {
2708: if ($tsec ne $usec) { next; }
2709: }
2710: $access=($effect eq 'allow');
2711: last;
1.342 www 2712: }
1.402 bowersj2 2713: if ($realm eq '' && $role eq '') {
2714: $access=($effect eq 'allow');
2715: }
1.341 www 2716: }
2717: return $access;
2718: }
2719:
1.103 harris41 2720: # ------------------------------------------------- Check for a user privilege
1.12 www 2721:
2722: sub allowed {
2723: my ($priv,$uri)=@_;
1.439 www 2724: $uri=&deversion($uri);
1.152 www 2725: my $orguri=$uri;
1.52 www 2726: $uri=&declutter($uri);
1.29 www 2727:
1.398 albertel 2728: if (defined($ENV{'allowed.'.$priv})) { return $ENV{'allowed.'.$priv}; }
1.54 www 2729: # Free bre access to adm and meta resources
1.29 www 2730:
1.54 www 2731: if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 2732: return 'F';
1.159 www 2733: }
2734:
2735: # Free bre to public access
2736:
2737: if ($priv eq 'bre') {
1.238 www 2738: my $copyright=&metadata($uri,'copyright');
1.301 www 2739: if (($copyright eq 'public') && (!$ENV{'request.course.id'})) {
2740: return 'F';
2741: }
1.238 www 2742: if ($copyright eq 'priv') {
2743: $uri=~/([^\/]+)\/([^\/]+)\//;
2744: unless (($ENV{'user.name'} eq $2) && ($ENV{'user.domain'} eq $1)) {
2745: return '';
2746: }
2747: }
2748: if ($copyright eq 'domain') {
2749: $uri=~/([^\/]+)\/([^\/]+)\//;
2750: unless (($ENV{'user.domain'} eq $1) ||
2751: ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $1)) {
2752: return '';
2753: }
1.262 matthew 2754: }
2755: if ($ENV{'request.role'}=~ /li\.\//) {
2756: # Library role, so allow browsing of resources in this domain.
2757: return 'F';
1.238 www 2758: }
1.341 www 2759: if ($copyright eq 'custom') {
2760: unless (&customaccess($priv,$uri)) { return ''; }
2761: }
1.14 www 2762: }
1.264 matthew 2763: # Domain coordinator is trying to create a course
2764: if (($priv eq 'ccc') && ($ENV{'request.role'} =~ /^dc\./)) {
2765: # uri is the requested domain in this case.
2766: # comparison to 'request.role.domain' shows if the user has selected
2767: # a role of dc for the domain in question.
2768: return 'F' if ($uri eq $ENV{'request.role.domain'});
2769: }
1.29 www 2770:
1.52 www 2771: my $thisallowed='';
2772: my $statecond=0;
2773: my $courseprivid='';
2774:
2775: # Course
2776:
1.479 albertel 2777: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2778: $thisallowed.=$1;
2779: }
1.29 www 2780:
1.52 www 2781: # Domain
2782:
2783: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1.479 albertel 2784: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 2785: $thisallowed.=$1;
2786: }
1.52 www 2787:
2788: # Course: uri itself is a course
1.66 www 2789: my $courseuri=$uri;
2790: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 2791: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 2792:
1.83 www 2793: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.479 albertel 2794: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 2795: $thisallowed.=$1;
2796: }
1.29 www 2797:
1.314 www 2798: # URI is an uploaded document for this course
2799:
1.492 albertel 2800: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
2801: my $refuri=$ENV{'httpref.'.$orguri};
2802: if ($refuri) {
2803: if ($refuri =~ m|^/adm/|) {
2804: $thisallowed='F';
2805: }
2806: }
1.314 www 2807: }
1.492 albertel 2808:
1.52 www 2809: # Full access at system, domain or course-wide level? Exit.
1.29 www 2810:
2811: if ($thisallowed=~/F/) {
2812: return 'F';
2813: }
2814:
1.52 www 2815: # If this is generating or modifying users, exit with special codes
1.29 www 2816:
1.479 albertel 2817: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:\Q$priv\E\:/) {
1.52 www 2818: return $thisallowed;
2819: }
2820: #
1.103 harris41 2821: # Gathered so far: system, domain and course wide privileges
1.52 www 2822: #
2823: # Course: See if uri or referer is an individual resource that is part of
2824: # the course
2825:
2826: if ($ENV{'request.course.id'}) {
1.232 www 2827:
1.52 www 2828: $courseprivid=$ENV{'request.course.id'};
2829: if ($ENV{'request.course.sec'}) {
2830: $courseprivid.='/'.$ENV{'request.course.sec'};
2831: }
2832: $courseprivid=~s/\_/\//;
2833: my $checkreferer=1;
1.232 www 2834: my ($match,$cond)=&is_on_map($uri);
2835: if ($match) {
2836: $statecond=$cond;
1.52 www 2837: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1.479 albertel 2838: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2839: $thisallowed.=$1;
2840: $checkreferer=0;
2841: }
1.29 www 2842: }
1.83 www 2843:
1.148 www 2844: if ($checkreferer) {
1.152 www 2845: my $refuri=$ENV{'httpref.'.$orguri};
1.148 www 2846: unless ($refuri) {
1.191 harris41 2847: foreach (keys %ENV) {
1.148 www 2848: if ($_=~/^httpref\..*\*/) {
2849: my $pattern=$_;
1.156 www 2850: $pattern=~s/^httpref\.\/res\///;
1.148 www 2851: $pattern=~s/\*/\[\^\/\]\+/g;
2852: $pattern=~s/\//\\\//g;
1.152 www 2853: if ($orguri=~/$pattern/) {
1.148 www 2854: $refuri=$ENV{$_};
2855: }
2856: }
1.191 harris41 2857: }
1.148 www 2858: }
1.232 www 2859:
1.148 www 2860: if ($refuri) {
1.152 www 2861: $refuri=&declutter($refuri);
1.232 www 2862: my ($match,$cond)=&is_on_map($refuri);
2863: if ($match) {
2864: my $refstatecond=$cond;
1.52 www 2865: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1.479 albertel 2866: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2867: $thisallowed.=$1;
1.53 www 2868: $uri=$refuri;
2869: $statecond=$refstatecond;
1.52 www 2870: }
2871: }
1.148 www 2872: }
1.29 www 2873: }
1.52 www 2874: }
1.29 www 2875:
1.52 www 2876: #
1.103 harris41 2877: # Gathered now: all privileges that could apply, and condition number
1.52 www 2878: #
2879: #
2880: # Full or no access?
2881: #
1.29 www 2882:
1.52 www 2883: if ($thisallowed=~/F/) {
2884: return 'F';
2885: }
1.29 www 2886:
1.52 www 2887: unless ($thisallowed) {
2888: return '';
2889: }
1.29 www 2890:
1.52 www 2891: # Restrictions exist, deal with them
2892: #
2893: # C:according to course preferences
2894: # R:according to resource settings
2895: # L:unless locked
2896: # X:according to user session state
2897: #
2898:
2899: # Possibly locked functionality, check all courses
1.54 www 2900: # Locks might take effect only after 10 minutes cache expiration for other
2901: # courses, and 2 minutes for current course
1.52 www 2902:
2903: my $envkey;
2904: if ($thisallowed=~/L/) {
2905: foreach $envkey (keys %ENV) {
1.54 www 2906: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
2907: my $courseid=$2;
2908: my $roleid=$1.'.'.$2;
1.92 www 2909: $courseid=~s/^\///;
1.54 www 2910: my $expiretime=600;
2911: if ($ENV{'request.role'} eq $roleid) {
2912: $expiretime=120;
2913: }
2914: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
2915: my $prefix='course.'.$cdom.'_'.$cnum.'.';
2916: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
2917: &coursedescription($courseid);
2918: }
1.479 albertel 2919: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
1.54 www 2920: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
2921: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 2922: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 2923: $ENV{'user.home'},
1.57 www 2924: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 2925: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 2926: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 2927: return '';
2928: }
2929: }
1.479 albertel 2930: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
1.54 www 2931: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
2932: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 2933: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 2934: $ENV{'user.home'},
1.57 www 2935: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 2936: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 2937: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 2938: return '';
2939: }
2940: }
2941: }
1.29 www 2942: }
1.52 www 2943: }
2944:
2945: #
2946: # Rest of the restrictions depend on selected course
2947: #
2948:
2949: unless ($ENV{'request.course.id'}) {
2950: return '1';
2951: }
1.29 www 2952:
1.52 www 2953: #
2954: # Now user is definitely in a course
2955: #
1.53 www 2956:
2957:
2958: # Course preferences
2959:
2960: if ($thisallowed=~/C/) {
1.54 www 2961: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.237 www 2962: my $unamedom=$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.54 www 2963: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1.479 albertel 2964: =~/\Q$rolecode\E/) {
1.57 www 2965: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
2966: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.237 www 2967: $ENV{'request.course.id'});
2968: return '';
2969: }
2970:
2971: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.users.denied'}
1.479 albertel 2972: =~/\Q$unamedom\E/) {
1.237 www 2973: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
2974: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
1.54 www 2975: $ENV{'request.course.id'});
2976: return '';
2977: }
1.53 www 2978: }
2979:
2980: # Resource preferences
2981:
2982: if ($thisallowed=~/R/) {
1.54 www 2983: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.479 albertel 2984: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
1.341 www 2985: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1.57 www 2986: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.341 www 2987: return '';
1.54 www 2988: }
1.53 www 2989: }
1.30 www 2990:
1.246 www 2991: # Restricted by state or randomout?
1.30 www 2992:
1.52 www 2993: if ($thisallowed=~/X/) {
1.247 www 2994: if ($ENV{'acc.randomout'}) {
1.249 www 2995: my $symb=&symbread($uri,1);
1.479 albertel 2996: if (($symb) && ($ENV{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
1.248 www 2997: return '';
2998: }
1.247 www 2999: }
3000: if (&condval($statecond)) {
1.52 www 3001: return '2';
3002: } else {
3003: return '';
3004: }
3005: }
1.30 www 3006:
1.52 www 3007: return 'F';
1.232 www 3008: }
3009:
3010: # --------------------------------------------------- Is a resource on the map?
3011:
3012: sub is_on_map {
3013: my $uri=&declutter(shift);
1.435 www 3014: $uri=~s/\.\d+\.(\w+)$/\.$1/;
1.232 www 3015: my @uriparts=split(/\//,$uri);
3016: my $filename=$uriparts[$#uriparts];
3017: my $pathname=$uri;
1.289 bowersj2 3018: $pathname=~s|/\Q$filename\E$||;
1.332 www 3019: $pathname=~s/^adm\/wrapper\///;
1.289 bowersj2 3020: #Trying to find the conditional for the file
1.232 www 3021: my $match=($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.289 bowersj2 3022: /\&\Q$filename\E\:([\d\|]+)\&/);
1.232 www 3023: if ($match) {
1.289 bowersj2 3024: return (1,$1);
3025: } else {
1.434 www 3026: return (0,0);
1.289 bowersj2 3027: }
1.12 www 3028: }
3029:
1.427 www 3030: # --------------------------------------------------------- Get symb from alias
3031:
3032: sub get_symb_from_alias {
3033: my $symb=shift;
3034: my ($map,$resid,$url)=&decode_symb($symb);
3035: # Already is a symb
3036: if ($url) { return $symb; }
3037: # Must be an alias
3038: my $aliassymb='';
3039: my %bighash;
3040: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
3041: &GDBM_READER(),0640)) {
3042: my $rid=$bighash{'mapalias_'.$symb};
3043: if ($rid) {
3044: my ($mapid,$resid)=split(/\./,$rid);
1.429 albertel 3045: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
3046: $resid,$bighash{'src_'.$rid});
1.427 www 3047: }
3048: untie %bighash;
3049: }
3050: return $aliassymb;
3051: }
3052:
1.12 www 3053: # ----------------------------------------------------------------- Define Role
3054:
3055: sub definerole {
3056: if (allowed('mcr','/')) {
3057: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.392 www 3058: foreach (split(':',$sysrole)) {
1.21 www 3059: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3060: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
3061: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
3062: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3063: return "refused:s:$crole&$cqual";
3064: }
3065: }
1.191 harris41 3066: }
1.392 www 3067: foreach (split(':',$domrole)) {
1.21 www 3068: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3069: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
3070: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
3071: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
1.21 www 3072: return "refused:d:$crole&$cqual";
3073: }
3074: }
1.191 harris41 3075: }
1.392 www 3076: foreach (split(':',$courole)) {
1.21 www 3077: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3078: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
3079: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
3080: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3081: return "refused:c:$crole&$cqual";
3082: }
3083: }
1.191 harris41 3084: }
1.12 www 3085: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
3086: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 3087: "rolesdef_$rolename=".
3088: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 3089: return reply($command,$ENV{'user.home'});
3090: } else {
3091: return 'refused';
3092: }
1.105 harris41 3093: }
3094:
3095: # ---------------- Make a metadata query against the network of library servers
3096:
3097: sub metadata_query {
1.244 matthew 3098: my ($query,$custom,$customshow,$server_array)=@_;
1.120 harris41 3099: my %rhash;
1.244 matthew 3100: my @server_list = (defined($server_array) ? @$server_array
3101: : keys(%libserv) );
3102: for my $server (@server_list) {
1.118 harris41 3103: unless ($custom or $customshow) {
3104: my $reply=&reply("querysend:".&escape($query),$server);
3105: $rhash{$server}=$reply;
3106: }
3107: else {
3108: my $reply=&reply("querysend:".&escape($query).':'.
3109: &escape($custom).':'.&escape($customshow),
3110: $server);
3111: $rhash{$server}=$reply;
3112: }
1.112 harris41 3113: }
1.118 harris41 3114: return \%rhash;
1.240 www 3115: }
3116:
3117: # ----------------------------------------- Send log queries and wait for reply
3118:
3119: sub log_query {
3120: my ($uname,$udom,$query,%filters)=@_;
3121: my $uhome=&homeserver($uname,$udom);
3122: if ($uhome eq 'no_host') { return 'error: no_host'; }
3123: my $uhost=$hostname{$uhome};
1.241 www 3124: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys %filters));
1.240 www 3125: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
3126: $uhome);
1.479 albertel 3127: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
1.242 www 3128: return get_query_reply($queryid);
3129: }
3130:
1.508 raeburn 3131: # ------- Request retrieval of institutional classlists for course(s)
1.506 raeburn 3132:
3133: sub fetch_enrollment_query {
1.511 raeburn 3134: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
1.508 raeburn 3135: my $homeserver;
1.523.2.7 albertel 3136: my $maxtries = 1;
1.508 raeburn 3137: if ($context eq 'automated') {
3138: $homeserver = $perlvar{'lonHostID'};
1.523.2.7 albertel 3139: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
1.508 raeburn 3140: } else {
3141: $homeserver = &homeserver($cnum,$dom);
3142: }
1.506 raeburn 3143: my $host=$hostname{$homeserver};
3144: my $cmd = '';
3145: foreach (keys %{$affiliatesref}) {
1.508 raeburn 3146: $cmd .= $_.'='.join(",",@{$$affiliatesref{$_}}).'%%';
1.506 raeburn 3147: }
3148: $cmd =~ s/%%$//;
3149: $cmd = &escape($cmd);
3150: my $query = 'fetchenrollment';
3151: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$ENV{'user.name'}.':'.$cmd,$homeserver);
3152: unless ($queryid=~/^\Q$host\E\_/) { return 'error: '.$queryid; }
3153: my $reply = &get_query_reply($queryid);
1.523.2.7 albertel 3154: my $tries = 1;
3155: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
3156: $reply = &get_query_reply($queryid);
3157: $tries++;
3158: }
3159: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
3160: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.
3161: $ENV{'user.name'}.' for '.$queryid.' context: '.$context.' '.
3162: $cnum.' maxtries: '.$maxtries.' tries: '.$tries);
3163: }
1.506 raeburn 3164: unless ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1.515 raeburn 3165: my @responses = split/:/,$reply;
3166: if ($homeserver eq $perlvar{'lonHostID'}) {
3167: foreach (@responses) {
3168: my ($key,$value) = split/=/,$_;
3169: $$replyref{$key} = $value;
3170: }
3171: } else {
1.506 raeburn 3172: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
3173: foreach (@responses) {
3174: my ($key,$value) = split/=/,$_;
3175: $$replyref{$key} = $value;
3176: if ($value > 0) {
3177: foreach (@{$$affiliatesref{$key}}) {
3178: my $filename = $dom.'_'.$key.'_'.$_.'_classlist.xml';
3179: my $destname = $pathname.'/'.$filename;
3180: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
3181: unless ($xml_classlist =~ /^error/) {
3182: if ( open(FILE,">$destname") ) {
3183: print FILE &unescape($xml_classlist);
3184: close(FILE);
3185: }
3186: }
3187: }
3188: }
3189: }
3190: }
3191: return 'ok';
3192: }
3193: return 'error';
3194: }
3195:
1.242 www 3196: sub get_query_reply {
3197: my $queryid=shift;
1.240 www 3198: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
3199: my $reply='';
3200: for (1..100) {
3201: sleep 2;
3202: if (-e $replyfile.'.end') {
1.448 albertel 3203: if (open(my $fh,$replyfile)) {
1.240 www 3204: $reply.=<$fh>;
1.448 albertel 3205: close($fh);
1.240 www 3206: } else { return 'error: reply_file_error'; }
1.242 www 3207: return &unescape($reply);
3208: }
1.240 www 3209: }
1.242 www 3210: return 'timeout:'.$queryid;
1.240 www 3211: }
3212:
3213: sub courselog_query {
1.241 www 3214: #
3215: # possible filters:
3216: # url: url or symb
3217: # username
3218: # domain
3219: # action: view, submit, grade
3220: # start: timestamp
3221: # end: timestamp
3222: #
1.240 www 3223: my (%filters)=@_;
3224: unless ($ENV{'request.course.id'}) { return 'no_course'; }
1.241 www 3225: if ($filters{'url'}) {
3226: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
3227: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
3228: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
3229: }
1.240 www 3230: my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
3231: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
3232: return &log_query($cname,$cdom,'courselog',%filters);
3233: }
3234:
3235: sub userlog_query {
3236: my ($uname,$udom,%filters)=@_;
3237: return &log_query($uname,$udom,'userlog',%filters);
1.12 www 3238: }
3239:
1.506 raeburn 3240: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
3241:
3242: sub auto_run {
1.508 raeburn 3243: my ($cnum,$cdom) = @_;
3244: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3245: my $response = &reply('autorun:'.$cdom,$homeserver);
1.506 raeburn 3246: return $response;
3247: }
3248:
3249: sub auto_get_sections {
1.508 raeburn 3250: my ($cnum,$cdom,$inst_coursecode) = @_;
3251: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3252: my @secs = ();
1.511 raeburn 3253: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
1.506 raeburn 3254: unless ($response eq 'refused') {
3255: @secs = split/:/,$response;
3256: }
3257: return @secs;
3258: }
3259:
3260: sub auto_new_course {
1.508 raeburn 3261: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
3262: my $homeserver = &homeserver($cnum,$cdom);
1.515 raeburn 3263: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
1.506 raeburn 3264: return $response;
3265: }
3266:
3267: sub auto_validate_courseID {
1.508 raeburn 3268: my ($cnum,$cdom,$inst_course_id) = @_;
3269: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3270: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
1.506 raeburn 3271: return $response;
3272: }
3273:
3274: sub auto_create_password {
1.508 raeburn 3275: my ($cnum,$cdom,$authparam) = @_;
3276: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3277: my $create_passwd = 0;
3278: my $authchk = '';
1.511 raeburn 3279: my $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
1.506 raeburn 3280: if ($response eq 'refused') {
3281: $authchk = 'refused';
3282: } else {
3283: ($authparam,$create_passwd,$authchk) = split/:/,$response;
3284: }
3285: return ($authparam,$create_passwd,$authchk);
3286: }
3287:
1.521 raeburn 3288: sub auto_instcode_format {
3289: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
3290: my $courses = '';
3291: my $homeserver;
3292: if ($caller eq 'global') {
3293: $homeserver = $perlvar{'lonHostID'};
3294: } else {
3295: $homeserver = &homeserver($caller,$codedom);
3296: }
3297: my $host=$hostname{$homeserver};
3298: foreach (keys %{$instcodes}) {
3299: $courses .= &escape($_).'='.&escape($$instcodes{$_}).'&';
3300: }
3301: chop($courses);
3302: my $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$homeserver);
3303: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
3304: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) = split/:/,$response;
3305: %{$codes} = &str2hash($codes_str);
3306: @{$codetitles} = &str2array($codetitles_str);
3307: %{$cat_titles} = &str2hash($cat_titles_str);
3308: %{$cat_order} = &str2hash($cat_order_str);
3309: return 'ok';
3310: }
3311: return $response;
3312: }
3313:
1.12 www 3314: # ------------------------------------------------------------------ Plain Text
3315:
3316: sub plaintext {
1.22 www 3317: my $short=shift;
1.414 www 3318: return &mt($prp{$short});
1.12 www 3319: }
3320:
3321: # ----------------------------------------------------------------- Assign Role
3322:
3323: sub assignrole {
1.357 www 3324: my ($udom,$uname,$url,$role,$end,$start,$deleteflag)=@_;
1.21 www 3325: my $mrole;
3326: if ($role =~ /^cr\//) {
1.393 www 3327: my $cwosec=$url;
3328: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
3329: unless (&allowed('ccr',$cwosec)) {
1.104 www 3330: &logthis('Refused custom assignrole: '.
3331: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
3332: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
3333: return 'refused';
3334: }
1.21 www 3335: $mrole='cr';
3336: } else {
1.82 www 3337: my $cwosec=$url;
1.83 www 3338: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.373 www 3339: unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) {
1.104 www 3340: &logthis('Refused assignrole: '.
3341: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
3342: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
3343: return 'refused';
3344: }
1.21 www 3345: $mrole=$role;
3346: }
3347: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
3348: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 3349: if ($end) { $command.='_'.$end; }
1.21 www 3350: if ($start) {
3351: if ($end) {
1.81 www 3352: $command.='_'.$start;
1.21 www 3353: } else {
1.81 www 3354: $command.='_0_'.$start;
1.21 www 3355: }
3356: }
1.357 www 3357: # actually delete
3358: if ($deleteflag) {
1.373 www 3359: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
1.357 www 3360: # modify command to delete the role
3361: $command="encrypt:rolesdel:$ENV{'user.domain'}:$ENV{'user.name'}:".
3362: "$udom:$uname:$url".'_'."$mrole";
1.373 www 3363: &logthis("$ENV{'user.name'} at $ENV{'user.domain'} deletes $mrole in $url for $uname at $udom");
1.357 www 3364: # set start and finish to negative values for userrolelog
3365: $start=-1;
3366: $end=-1;
3367: }
3368: }
3369: # send command
1.349 www 3370: my $answer=&reply($command,&homeserver($uname,$udom));
1.357 www 3371: # log new user role if status is ok
1.349 www 3372: if ($answer eq 'ok') {
3373: &userrolelog($mrole,$uname,$udom,$url,$start,$end);
3374: }
3375: return $answer;
1.169 harris41 3376: }
3377:
3378: # -------------------------------------------------- Modify user authentication
1.197 www 3379: # Overrides without validation
3380:
1.169 harris41 3381: sub modifyuserauth {
3382: my ($udom,$uname,$umode,$upass)=@_;
3383: my $uhome=&homeserver($uname,$udom);
1.197 www 3384: unless (&allowed('mau',$udom)) { return 'refused'; }
3385: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
1.272 matthew 3386: $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
3387: ' in domain '.$ENV{'request.role.domain'});
1.169 harris41 3388: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
3389: &escape($upass),$uhome);
1.197 www 3390: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
3391: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
3392: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
3393: &log($udom,,$uname,$uhome,
3394: 'Authentication changed by '.$ENV{'user.domain'}.', '.
3395: $ENV{'user.name'}.', '.$umode.
3396: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
1.169 harris41 3397: unless ($reply eq 'ok') {
1.197 www 3398: &logthis('Authentication mode error: '.$reply);
1.169 harris41 3399: return 'error: '.$reply;
3400: }
1.170 harris41 3401: return 'ok';
1.80 www 3402: }
3403:
1.81 www 3404: # --------------------------------------------------------------- Modify a user
1.80 www 3405:
1.81 www 3406: sub modifyuser {
1.206 matthew 3407: my ($udom, $uname, $uid,
3408: $umode, $upass, $first,
3409: $middle, $last, $gene,
1.387 www 3410: $forceid, $desiredhome, $email)=@_;
1.198 www 3411: $udom=~s/\W//g;
3412: $uname=~s/\W//g;
1.81 www 3413: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3414: $umode.', '.$first.', '.$middle.', '.
1.206 matthew 3415: $last.', '.$gene.'(forceid: '.$forceid.')'.
3416: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
3417: ' desiredhome not specified').
1.272 matthew 3418: ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
3419: ' in domain '.$ENV{'request.role.domain'});
1.230 stredwic 3420: my $uhome=&homeserver($uname,$udom,'true');
1.80 www 3421: # ----------------------------------------------------------------- Create User
1.406 albertel 3422: if (($uhome eq 'no_host') &&
3423: (($umode && $upass) || ($umode eq 'localauth'))) {
1.80 www 3424: my $unhome='';
1.209 matthew 3425: if (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) {
3426: $unhome = $desiredhome;
3427: } elsif($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1.80 www 3428: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.209 matthew 3429: } else { # load balancing routine for determining $unhome
1.80 www 3430: my $tryserver;
1.81 www 3431: my $loadm=10000000;
1.80 www 3432: foreach $tryserver (keys %libserv) {
3433: if ($hostdom{$tryserver} eq $udom) {
3434: my $answer=reply('load',$tryserver);
3435: if (($answer=~/\d+/) && ($answer<$loadm)) {
3436: $loadm=$answer;
3437: $unhome=$tryserver;
3438: }
3439: }
3440: }
3441: }
3442: if (($unhome eq '') || ($unhome eq 'no_host')) {
1.206 matthew 3443: return 'error: unable to find a home server for '.$uname.
3444: ' in domain '.$udom;
1.80 www 3445: }
3446: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
3447: &escape($upass),$unhome);
3448: unless ($reply eq 'ok') {
3449: return 'error: '.$reply;
3450: }
1.230 stredwic 3451: $uhome=&homeserver($uname,$udom,'true');
1.80 www 3452: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1.386 matthew 3453: return 'error: unable verify users home machine.';
1.80 www 3454: }
1.209 matthew 3455: } # End of creation of new user
1.80 www 3456: # ---------------------------------------------------------------------- Add ID
3457: if ($uid) {
3458: $uid=~tr/A-Z/a-z/;
3459: my %uidhash=&idrget($udom,$uname);
1.196 www 3460: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
3461: && (!$forceid)) {
1.80 www 3462: unless ($uid eq $uidhash{$uname}) {
1.386 matthew 3463: return 'error: user id "'.$uid.'" does not match '.
3464: 'current user id "'.$uidhash{$uname}.'".';
1.80 www 3465: }
3466: } else {
3467: &idput($udom,($uname => $uid));
3468: }
3469: }
3470: # -------------------------------------------------------------- Add names, etc
1.313 matthew 3471: my @tmp=&get('environment',
1.134 albertel 3472: ['firstname','middlename','lastname','generation'],
3473: $udom,$uname);
1.313 matthew 3474: my %names;
3475: if ($tmp[0] =~ m/^error:.*/) {
3476: %names=();
3477: } else {
3478: %names = @tmp;
3479: }
1.388 www 3480: #
3481: # Make sure to not trash student environment if instructor does not bother
3482: # to supply name and email information
3483: #
3484: if ($first) { $names{'firstname'} = $first; }
1.385 matthew 3485: if (defined($middle)) { $names{'middlename'} = $middle; }
1.388 www 3486: if ($last) { $names{'lastname'} = $last; }
1.385 matthew 3487: if (defined($gene)) { $names{'generation'} = $gene; }
1.388 www 3488: if ($email) { $names{'notification'} = $email;
3489: $names{'critnotification'} = $email; }
1.387 www 3490:
1.134 albertel 3491: my $reply = &put('environment', \%names, $udom,$uname);
3492: if ($reply ne 'ok') { return 'error: '.$reply; }
1.81 www 3493: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3494: $umode.', '.$first.', '.$middle.', '.
3495: $last.', '.$gene.' by '.
3496: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.134 albertel 3497: return 'ok';
1.80 www 3498: }
3499:
1.81 www 3500: # -------------------------------------------------------------- Modify student
1.80 www 3501:
1.81 www 3502: sub modifystudent {
3503: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1.515 raeburn 3504: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
1.455 albertel 3505: if (!$cid) {
3506: unless ($cid=$ENV{'request.course.id'}) {
3507: return 'not_in_class';
3508: }
1.80 www 3509: }
3510: # --------------------------------------------------------------- Make the user
1.81 www 3511: my $reply=&modifyuser
1.209 matthew 3512: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
1.387 www 3513: $desiredhome,$email);
1.80 www 3514: unless ($reply eq 'ok') { return $reply; }
1.297 matthew 3515: # This will cause &modify_student_enrollment to get the uid from the
3516: # students environment
3517: $uid = undef if (!$forceid);
1.455 albertel 3518: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
1.515 raeburn 3519: $gene,$usec,$end,$start,$type,$locktype,$cid);
1.297 matthew 3520: return $reply;
3521: }
3522:
3523: sub modify_student_enrollment {
1.515 raeburn 3524: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid) = @_;
1.455 albertel 3525: my ($cdom,$cnum,$chome);
3526: if (!$cid) {
3527: unless ($cid=$ENV{'request.course.id'}) {
3528: return 'not_in_class';
3529: }
3530: $cdom=$ENV{'course.'.$cid.'.domain'};
3531: $cnum=$ENV{'course.'.$cid.'.num'};
3532: } else {
3533: ($cdom,$cnum)=split(/_/,$cid);
3534: }
3535: $chome=$ENV{'course.'.$cid.'.home'};
3536: if (!$chome) {
1.457 raeburn 3537: $chome=&homeserver($cnum,$cdom);
1.297 matthew 3538: }
1.455 albertel 3539: if (!$chome) { return 'unknown_course'; }
1.297 matthew 3540: # Make sure the user exists
1.81 www 3541: my $uhome=&homeserver($uname,$udom);
3542: if (($uhome eq '') || ($uhome eq 'no_host')) {
3543: return 'error: no such user';
3544: }
1.297 matthew 3545: # Get student data if we were not given enough information
3546: if (!defined($first) || $first eq '' ||
3547: !defined($last) || $last eq '' ||
3548: !defined($uid) || $uid eq '' ||
3549: !defined($middle) || $middle eq '' ||
3550: !defined($gene) || $gene eq '') {
1.294 matthew 3551: # They did not supply us with enough data to enroll the student, so
3552: # we need to pick up more information.
1.297 matthew 3553: my %tmp = &get('environment',
1.294 matthew 3554: ['firstname','middlename','lastname', 'generation','id']
1.297 matthew 3555: ,$udom,$uname);
3556:
1.455 albertel 3557: #foreach (keys(%tmp)) {
3558: # &logthis("key $_ = ".$tmp{$_});
3559: #}
1.294 matthew 3560: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
3561: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
3562: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
1.297 matthew 3563: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
1.294 matthew 3564: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
3565: }
3566: my $fullname = &Apache::loncoursedata::ProcessFullName($last,$gene,
3567: $first,$middle);
1.487 albertel 3568: my $reply=cput('classlist',
3569: {"$uname:$udom" =>
1.515 raeburn 3570: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
1.487 albertel 3571: $cdom,$cnum);
1.81 www 3572: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
3573: return 'error: '.$reply;
3574: }
1.297 matthew 3575: # Add student role to user
1.83 www 3576: my $uurl='/'.$cid;
1.81 www 3577: $uurl=~s/\_/\//g;
3578: if ($usec) {
3579: $uurl.='/'.$usec;
3580: }
3581: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 3582: }
3583:
1.84 www 3584: # ------------------------------------------------- Write to course preferences
3585:
3586: sub writecoursepref {
3587: my ($courseid,%prefs)=@_;
3588: $courseid=~s/^\///;
3589: $courseid=~s/\_/\//g;
3590: my ($cdomain,$cnum)=split(/\//,$courseid);
3591: my $chome=homeserver($cnum,$cdomain);
3592: if (($chome eq '') || ($chome eq 'no_host')) {
3593: return 'error: no such course';
3594: }
3595: my $cstring='';
1.191 harris41 3596: foreach (keys %prefs) {
1.84 www 3597: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1.191 harris41 3598: }
1.84 www 3599: $cstring=~s/\&$//;
3600: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
3601: }
3602:
3603: # ---------------------------------------------------------- Make/modify course
3604:
3605: sub createcourse {
1.516 raeburn 3606: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code)=@_;
1.84 www 3607: $url=&declutter($url);
3608: my $cid='';
1.264 matthew 3609: unless (&allowed('ccc',$udom)) {
1.84 www 3610: return 'refused';
3611: }
3612: # ------------------------------------------------------------------- Create ID
3613: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
3614: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
3615: # ----------------------------------------------- Make sure that does not exist
1.230 stredwic 3616: my $uhome=&homeserver($uname,$udom,'true');
1.84 www 3617: unless (($uhome eq '') || ($uhome eq 'no_host')) {
3618: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
3619: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1.230 stredwic 3620: $uhome=&homeserver($uname,$udom,'true');
1.84 www 3621: unless (($uhome eq '') || ($uhome eq 'no_host')) {
3622: return 'error: unable to generate unique course-ID';
3623: }
3624: }
1.264 matthew 3625: # ------------------------------------------------ Check supplied server name
3626: $course_server = $ENV{'user.homeserver'} if (! defined($course_server));
3627: if (! exists($libserv{$course_server})) {
3628: return 'error:bad server name '.$course_server;
3629: }
1.84 www 3630: # ------------------------------------------------------------- Make the course
3631: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1.264 matthew 3632: $course_server);
1.84 www 3633: unless ($reply eq 'ok') { return 'error: '.$reply; }
1.230 stredwic 3634: $uhome=&homeserver($uname,$udom,'true');
1.84 www 3635: if (($uhome eq '') || ($uhome eq 'no_host')) {
3636: return 'error: no such course';
3637: }
1.271 www 3638: # ----------------------------------------------------------------- Course made
1.516 raeburn 3639: # log existence
3640: &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
3641: '='.&escape($inst_code),$uhome);
1.358 www 3642: &flushcourselogs();
3643: # set toplevel url
1.271 www 3644: my $topurl=$url;
3645: unless ($nonstandard) {
3646: # ------------------------------------------ For standard courses, make top url
3647: my $mapurl=&clutter($url);
1.278 www 3648: if ($mapurl eq '/res/') { $mapurl=''; }
1.271 www 3649: $ENV{'form.initmap'}=(<<ENDINITMAP);
3650: <map>
3651: <resource id="1" type="start"></resource>
3652: <resource id="2" src="$mapurl"></resource>
3653: <resource id="3" type="finish"></resource>
3654: <link index="1" from="1" to="2"></link>
3655: <link index="2" from="2" to="3"></link>
3656: </map>
3657: ENDINITMAP
3658: $topurl=&declutter(
3659: &finishuserfileupload($uname,$udom,$uhome,'initmap','default.sequence')
3660: );
3661: }
3662: # ----------------------------------------------------------- Write preferences
1.84 www 3663: &writecoursepref($udom.'_'.$uname,
3664: ('description' => $description,
1.271 www 3665: 'url' => $topurl));
1.84 www 3666: return '/'.$udom.'/'.$uname;
3667: }
3668:
1.21 www 3669: # ---------------------------------------------------------- Assign Custom Role
3670:
3671: sub assigncustomrole {
1.357 www 3672: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
1.21 www 3673: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1.357 www 3674: $end,$start,$deleteflag);
1.21 www 3675: }
3676:
3677: # ----------------------------------------------------------------- Revoke Role
3678:
3679: sub revokerole {
1.357 www 3680: my ($udom,$uname,$url,$role,$deleteflag)=@_;
1.21 www 3681: my $now=time;
1.357 www 3682: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
1.21 www 3683: }
3684:
3685: # ---------------------------------------------------------- Revoke Custom Role
3686:
3687: sub revokecustomrole {
1.357 www 3688: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
1.21 www 3689: my $now=time;
1.357 www 3690: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
3691: $deleteflag);
1.17 www 3692: }
3693:
1.512 banghart 3694:
3695: # ------------------------------------------------------------ Portfolio Director Lister
1.519 banghart 3696: # returns listing of contents of user's /userfiles/portfolio/ directory
3697: #
3698:
1.512 banghart 3699: sub portfoliolist {
1.520 albertel 3700: my ($currentPath, $currentFile) = @_;
3701: my ($udom, $uname, $portfolioRoot);
3702: $uname=$ENV{'user.name'};
1.514 albertel 3703: $udom=$ENV{'user.domain'};
1.519 banghart 3704: # really should interrogate the system for home directory information, but . . .
3705: $portfolioRoot = '/home/httpd/lonUsers/'.$udom.'/';
3706: $uname =~ /^(.?)(.?)(.?)/;
3707: $portfolioRoot = $portfolioRoot.$1.'/'.$2.'/'.$3.'/'.$uname.'/userfiles/portfolio';
1.520 albertel 3708: my $listing = &reply('ls:'.$portfolioRoot.$currentPath, &homeserver($uname,$udom));
3709: return $listing;
1.513 banghart 3710: }
1.514 albertel 3711:
1.513 banghart 3712: sub portfoliomanage {
1.514 albertel 3713:
3714: #FIXME please user the existing remove userfile function instead and
3715: #add a userfilerename functions.
3716: #FIXME uhome should never be an argument to any lonnet functions
3717:
3718: # handles deleting and renaming files in user's userfiles/portfolio/ directory
3719: #
3720: my ($filename, $fileaction, $filenewname) = @_;
3721: my ($udom, $uname, $uhome);
3722: $uname=$ENV{'user.name'};
3723: $udom=$ENV{'user.domain'};
3724: $uhome=$ENV{'user.home'};
3725: my $listing = reply('portfoliomanage:'.$uname.':'.$udom.':'.$filename.':'.$fileaction.':'.$filenewname, $uhome);
3726: return $listing;
1.512 banghart 3727: }
3728:
3729:
1.17 www 3730: # ------------------------------------------------------------ Directory lister
3731:
3732: sub dirlist {
1.253 stredwic 3733: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
3734:
1.18 www 3735: $uri=~s/^\///;
3736: $uri=~s/\/$//;
1.253 stredwic 3737: my ($udom, $uname);
3738: (undef,$udom,$uname)=split(/\//,$uri);
3739: if(defined($userdomain)) {
3740: $udom = $userdomain;
3741: }
3742: if(defined($username)) {
3743: $uname = $username;
3744: }
3745:
3746: my $dirRoot = $perlvar{'lonDocRoot'};
3747: if(defined($alternateDirectoryRoot)) {
3748: $dirRoot = $alternateDirectoryRoot;
3749: $dirRoot =~ s/\/$//;
3750: }
3751:
3752: if($udom) {
3753: if($uname) {
3754: my $listing=reply('ls:'.$dirRoot.'/'.$uri,
3755: homeserver($uname,$udom));
3756: return split(/:/,$listing);
3757: } elsif(!defined($alternateDirectoryRoot)) {
3758: my $tryserver;
3759: my %allusers=();
3760: foreach $tryserver (keys %libserv) {
3761: if($hostdom{$tryserver} eq $udom) {
3762: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
3763: $udom, $tryserver);
3764: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
3765: && ($listing ne 'con_lost')) {
3766: foreach (split(/:/,$listing)) {
3767: my ($entry,@stat)=split(/&/,$_);
3768: $allusers{$entry}=1;
3769: }
3770: }
1.191 harris41 3771: }
1.253 stredwic 3772: }
3773: my $alluserstr='';
3774: foreach (sort keys %allusers) {
3775: $alluserstr.=$_.'&user:';
3776: }
3777: $alluserstr=~s/:$//;
3778: return split(/:/,$alluserstr);
3779: } else {
3780: my @emptyResults = ();
3781: push(@emptyResults, 'missing user name');
3782: return split(':',@emptyResults);
3783: }
3784: } elsif(!defined($alternateDirectoryRoot)) {
3785: my $tryserver;
3786: my %alldom=();
3787: foreach $tryserver (keys %libserv) {
3788: $alldom{$hostdom{$tryserver}}=1;
3789: }
3790: my $alldomstr='';
3791: foreach (sort keys %alldom) {
1.397 albertel 3792: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'/&domain:';
1.253 stredwic 3793: }
3794: $alldomstr=~s/:$//;
3795: return split(/:/,$alldomstr);
3796: } else {
3797: my @emptyResults = ();
3798: push(@emptyResults, 'missing domain');
3799: return split(':',@emptyResults);
1.275 stredwic 3800: }
3801: }
3802:
3803: # --------------------------------------------- GetFileTimestamp
3804: # This function utilizes dirlist and returns the date stamp for
3805: # when it was last modified. It will also return an error of -1
3806: # if an error occurs
3807:
1.410 matthew 3808: ##
3809: ## FIXME: This subroutine assumes its caller knows something about the
3810: ## directory structure of the home server for the student ($root).
3811: ## Not a good assumption to make. Since this is for looking up files
3812: ## in user directories, the full path should be constructed by lond, not
3813: ## whatever machine we request data from.
3814: ##
1.275 stredwic 3815: sub GetFileTimestamp {
3816: my ($studentDomain,$studentName,$filename,$root)=@_;
3817: $studentDomain=~s/\W//g;
3818: $studentName=~s/\W//g;
3819: my $subdir=$studentName.'__';
3820: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3821: my $proname="$studentDomain/$subdir/$studentName";
3822: $proname .= '/'.$filename;
1.375 matthew 3823: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
3824: $studentName, $root);
1.275 stredwic 3825: my @stats = split('&', $fileStat);
3826: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
1.375 matthew 3827: # @stats contains first the filename, then the stat output
3828: return $stats[10]; # so this is 10 instead of 9.
1.275 stredwic 3829: } else {
3830: return -1;
1.253 stredwic 3831: }
1.26 www 3832: }
3833:
3834: # -------------------------------------------------------- Value of a Condition
3835:
1.40 www 3836: sub directcondval {
3837: my $number=shift;
3838: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
3839: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
3840: } else {
3841: return 2;
3842: }
3843: }
3844:
1.26 www 3845: sub condval {
3846: my $condidx=shift;
3847: my $result=0;
1.54 www 3848: my $allpathcond='';
1.191 harris41 3849: foreach (split(/\|/,$condidx)) {
1.54 www 3850: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
3851: $allpathcond.=
3852: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
3853: }
1.191 harris41 3854: }
1.54 www 3855: $allpathcond=~s/\|$//;
1.33 www 3856: if ($ENV{'request.course.id'}) {
1.54 www 3857: if ($allpathcond) {
1.26 www 3858: my $operand='|';
3859: my @stack;
1.191 harris41 3860: foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {
1.26 www 3861: if ($_ eq '(') {
3862: push @stack,($operand,$result)
3863: } elsif ($_ eq ')') {
3864: my $before=pop @stack;
3865: if (pop @stack eq '&') {
3866: $result=$result>$before?$before:$result;
3867: } else {
3868: $result=$result>$before?$result:$before;
3869: }
3870: } elsif (($_ eq '&') || ($_ eq '|')) {
3871: $operand=$_;
3872: } else {
1.40 www 3873: my $new=directcondval($_);
1.26 www 3874: if ($operand eq '&') {
3875: $result=$result>$new?$new:$result;
3876: } else {
3877: $result=$result>$new?$result:$new;
1.191 harris41 3878: }
1.26 www 3879: }
1.191 harris41 3880: }
1.26 www 3881: }
3882: }
3883: return $result;
1.421 albertel 3884: }
3885:
3886: # ---------------------------------------------------- Devalidate courseresdata
3887:
3888: sub devalidatecourseresdata {
3889: my ($coursenum,$coursedomain)=@_;
3890: my $hashid=$coursenum.':'.$coursedomain;
1.428 albertel 3891: &devalidate_cache(\%courseresdatacache,$hashid,'courseres');
1.28 www 3892: }
3893:
1.200 www 3894: # --------------------------------------------------- Course Resourcedata Query
3895:
3896: sub courseresdata {
3897: my ($coursenum,$coursedomain,@which)=@_;
3898: my $coursehom=&homeserver($coursenum,$coursedomain);
3899: my $hashid=$coursenum.':'.$coursedomain;
1.425 albertel 3900: my ($result,$cached)=&is_cached(\%courseresdatacache,$hashid,'courseres');
1.417 albertel 3901: unless (defined($cached)) {
1.251 albertel 3902: my %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
1.417 albertel 3903: $result=\%dumpreply;
1.251 albertel 3904: my ($tmp) = keys(%dumpreply);
3905: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
1.425 albertel 3906: &do_cache(\%courseresdatacache,$hashid,$result,'courseres');
1.306 albertel 3907: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
3908: return $tmp;
1.416 albertel 3909: } elsif ($tmp =~ /^(error)/) {
1.417 albertel 3910: $result=undef;
1.425 albertel 3911: &do_cache(\%courseresdatacache,$hashid,$result,'courseres');
1.250 albertel 3912: }
3913: }
1.251 albertel 3914: foreach my $item (@which) {
1.417 albertel 3915: if (defined($result->{$item})) {
3916: return $result->{$item};
1.251 albertel 3917: }
1.250 albertel 3918: }
1.291 albertel 3919: return undef;
1.200 www 3920: }
3921:
1.379 matthew 3922: #
3923: # EXT resource caching routines
3924: #
3925:
3926: sub clear_EXT_cache_status {
1.383 albertel 3927: &delenv('cache.EXT.');
1.379 matthew 3928: }
3929:
3930: sub EXT_cache_status {
3931: my ($target_domain,$target_user) = @_;
1.383 albertel 3932: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.389 www 3933: if (exists($ENV{$cachename}) && ($ENV{$cachename}+600) > time) {
1.379 matthew 3934: # We know already the user has no data
3935: return 1;
3936: } else {
3937: return 0;
3938: }
3939: }
3940:
3941: sub EXT_cache_set {
3942: my ($target_domain,$target_user) = @_;
1.383 albertel 3943: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.379 matthew 3944: &appenv($cachename => time);
3945: }
3946:
1.28 www 3947: # --------------------------------------------------------- Value of a Variable
1.58 www 3948: sub EXT {
1.395 albertel 3949: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
1.218 albertel 3950:
1.68 www 3951: unless ($varname) { return ''; }
1.218 albertel 3952: #get real user name/domain, courseid and symb
3953: my $courseid;
1.359 albertel 3954: my $publicuser;
1.427 www 3955: if ($symbparm) {
3956: $symbparm=&get_symb_from_alias($symbparm);
3957: }
1.218 albertel 3958: if (!($uname && $udom)) {
1.360 albertel 3959: (my $cursymb,$courseid,$udom,$uname,$publicuser)=
1.378 matthew 3960: &Apache::lonxml::whichuser($symbparm);
1.218 albertel 3961: if (!$symbparm) { $symbparm=$cursymb; }
3962: } else {
3963: $courseid=$ENV{'request.course.id'};
3964: }
1.48 www 3965: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
3966: my $rest;
1.320 albertel 3967: if (defined($therest[0])) {
1.48 www 3968: $rest=join('.',@therest);
3969: } else {
3970: $rest='';
3971: }
1.320 albertel 3972:
1.57 www 3973: my $qualifierrest=$qualifier;
3974: if ($rest) { $qualifierrest.='.'.$rest; }
3975: my $spacequalifierrest=$space;
3976: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 3977: if ($realm eq 'user') {
1.48 www 3978: # --------------------------------------------------------------- user.resource
3979: if ($space eq 'resource') {
1.335 albertel 3980: if (defined($Apache::lonhomework::parsing_a_problem)) {
3981: return $Apache::lonhomework::history{$qualifierrest};
3982: } else {
1.359 albertel 3983: my %restored;
3984: if ($publicuser || $ENV{'request.state'} eq 'construct') {
3985: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
3986: } else {
3987: %restored=&restore($symbparm,$courseid,$udom,$uname);
3988: }
1.335 albertel 3989: return $restored{$qualifierrest};
3990: }
1.48 www 3991: # ----------------------------------------------------------------- user.access
3992: } elsif ($space eq 'access') {
1.218 albertel 3993: # FIXME - not supporting calls for a specific user
1.48 www 3994: return &allowed($qualifier,$rest);
3995: # ------------------------------------------ user.preferences, user.environment
3996: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.218 albertel 3997: if (($uname eq $ENV{'user.name'}) &&
3998: ($udom eq $ENV{'user.domain'})) {
3999: return $ENV{join('.',('environment',$qualifierrest))};
4000: } else {
1.359 albertel 4001: my %returnhash;
4002: if (!$publicuser) {
4003: %returnhash=&userenvironment($udom,$uname,
4004: $qualifierrest);
4005: }
1.218 albertel 4006: return $returnhash{$qualifierrest};
4007: }
1.48 www 4008: # ----------------------------------------------------------------- user.course
4009: } elsif ($space eq 'course') {
1.218 albertel 4010: # FIXME - not supporting calls for a specific user
1.48 www 4011: return $ENV{join('.',('request.course',$qualifier))};
4012: # ------------------------------------------------------------------- user.role
4013: } elsif ($space eq 'role') {
1.218 albertel 4014: # FIXME - not supporting calls for a specific user
1.48 www 4015: my ($role,$where)=split(/\./,$ENV{'request.role'});
4016: if ($qualifier eq 'value') {
4017: return $role;
4018: } elsif ($qualifier eq 'extent') {
4019: return $where;
4020: }
4021: # ----------------------------------------------------------------- user.domain
4022: } elsif ($space eq 'domain') {
1.218 albertel 4023: return $udom;
1.48 www 4024: # ------------------------------------------------------------------- user.name
4025: } elsif ($space eq 'name') {
1.218 albertel 4026: return $uname;
1.48 www 4027: # ---------------------------------------------------- Any other user namespace
1.29 www 4028: } else {
1.359 albertel 4029: my %reply;
4030: if (!$publicuser) {
4031: %reply=&get($space,[$qualifierrest],$udom,$uname);
4032: }
4033: return $reply{$qualifierrest};
1.48 www 4034: }
1.236 www 4035: } elsif ($realm eq 'query') {
4036: # ---------------------------------------------- pull stuff out of query string
1.384 albertel 4037: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
4038: [$spacequalifierrest]);
1.376 albertel 4039: return $ENV{'form.'.$spacequalifierrest};
1.236 www 4040: } elsif ($realm eq 'request') {
1.48 www 4041: # ------------------------------------------------------------- request.browser
4042: if ($space eq 'browser') {
1.430 www 4043: if ($qualifier eq 'textremote') {
4044: if (&mt('textual_remote_display') eq 'on') {
4045: return 1;
4046: } else {
4047: return 0;
4048: }
4049: } else {
4050: return $ENV{'browser.'.$qualifier};
4051: }
1.57 www 4052: # ------------------------------------------------------------ request.filename
4053: } else {
4054: return $ENV{'request.'.$spacequalifierrest};
1.29 www 4055: }
1.28 www 4056: } elsif ($realm eq 'course') {
1.48 www 4057: # ---------------------------------------------------------- course.description
1.218 albertel 4058: return $ENV{'course.'.$courseid.'.'.$spacequalifierrest};
1.57 www 4059: } elsif ($realm eq 'resource') {
1.165 www 4060:
1.395 albertel 4061: my $section;
1.359 albertel 4062: if (defined($courseid) && $courseid eq $ENV{'request.course.id'}) {
1.523.2.2 albertel 4063: if (!$symbparm) { $symbparm=&symbread(); }
4064: }
4065: if ($symbparm && defined($courseid) &&
4066: $courseid eq $ENV{'request.course.id'}) {
1.165 www 4067:
1.218 albertel 4068: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
1.165 www 4069:
1.60 www 4070: # ----------------------------------------------------- Cascading lookup scheme
1.218 albertel 4071: my $symbp=$symbparm;
1.409 www 4072: my $mapp=(&decode_symb($symbp))[0];
1.218 albertel 4073:
4074: my $symbparm=$symbp.'.'.$spacequalifierrest;
4075: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
4076:
4077: if (($ENV{'user.name'} eq $uname) &&
4078: ($ENV{'user.domain'} eq $udom)) {
1.255 albertel 4079: $section=$ENV{'request.course.sec'};
1.218 albertel 4080: } else {
1.523.2.2 albertel 4081: if (! defined($usection)) {
4082: $section=&usection($udom,$uname,$courseid);
4083: } else {
4084: $section = $usection;
4085: }
1.218 albertel 4086: }
4087:
4088: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
4089: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
4090: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
4091:
4092: my $courselevel=$courseid.'.'.$spacequalifierrest;
4093: my $courselevelr=$courseid.'.'.$symbparm;
4094: my $courselevelm=$courseid.'.'.$mapparm;
1.69 www 4095:
1.60 www 4096: # ----------------------------------------------------------- first, check user
1.379 matthew 4097: #most student don\'t have any data set, check if there is some data
4098: if (! &EXT_cache_status($udom,$uname)) {
1.420 albertel 4099: my $hashid="$udom:$uname";
1.425 albertel 4100: my ($result,$cached)=&is_cached(\%userresdatacache,$hashid,
4101: 'userres');
1.454 albertel 4102: if (!defined($cached)) {
4103: my %resourcedata=&dump('resourcedata',$udom,$uname);
1.420 albertel 4104: $result=\%resourcedata;
1.425 albertel 4105: &do_cache(\%userresdatacache,$hashid,$result,'userres');
1.420 albertel 4106: }
4107: my ($tmp)=keys(%$result);
1.308 albertel 4108: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
1.420 albertel 4109: if ($$result{$courselevelr}) {
4110: return $$result{$courselevelr}; }
4111: if ($$result{$courselevelm}) {
4112: return $$result{$courselevelm}; }
4113: if ($$result{$courselevel}) {
4114: return $$result{$courselevel}; }
1.308 albertel 4115: } else {
1.459 albertel 4116: #error 2 occurs when the .db doesn't exist
4117: if ($tmp!~/error: 2 /) {
1.308 albertel 4118: &logthis("<font color=blue>WARNING:".
4119: " Trying to get resource data for ".
4120: $uname." at ".$udom.": ".
4121: $tmp."</font>");
1.459 albertel 4122: } elsif ($tmp=~/error: 2 /) {
1.523.2.2 albertel 4123: &EXT_cache_set($udom,$uname);
1.308 albertel 4124: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
4125: return $tmp;
4126: }
1.218 albertel 4127: }
4128: }
1.95 www 4129:
1.60 www 4130: # -------------------------------------------------------- second, check course
1.96 www 4131:
1.218 albertel 4132: my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},
1.523.2.2 albertel 4133: $ENV{'course.'.$courseid.'.domain'},
4134: ($seclevelr,$seclevelm,$seclevel,
4135: $courselevelr,$courselevelm,
4136: $courselevel));
1.287 albertel 4137: if (defined($coursereply)) { return $coursereply; }
1.200 www 4138:
1.60 www 4139: # ------------------------------------------------------ third, check map parms
1.218 albertel 4140: my %parmhash=();
4141: my $thisparm='';
4142: if (tie(%parmhash,'GDBM_File',
4143: $ENV{'request.course.fn'}.'_parms.db',
1.256 albertel 4144: &GDBM_READER(),0640)) {
1.218 albertel 4145: $thisparm=$parmhash{$symbparm};
4146: untie(%parmhash);
4147: }
4148: if ($thisparm) { return $thisparm; }
4149: }
1.60 www 4150: # --------------------------------------------- last, look in resource metadata
1.71 www 4151:
1.218 albertel 4152: $spacequalifierrest=~s/\./\_/;
1.282 albertel 4153: my $filename;
4154: if (!$symbparm) { $symbparm=&symbread(); }
4155: if ($symbparm) {
1.409 www 4156: $filename=(&decode_symb($symbparm))[2];
1.282 albertel 4157: } else {
4158: $filename=$ENV{'request.filename'};
4159: }
4160: my $metadata=&metadata($filename,$spacequalifierrest);
1.288 albertel 4161: if (defined($metadata)) { return $metadata; }
1.282 albertel 4162: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
1.288 albertel 4163: if (defined($metadata)) { return $metadata; }
1.142 www 4164:
1.145 www 4165: # ------------------------------------------------------------------ Cascade up
1.218 albertel 4166: unless ($space eq '0') {
1.336 albertel 4167: my @parts=split(/_/,$space);
4168: my $id=pop(@parts);
4169: my $part=join('_',@parts);
4170: if ($part eq '') { $part='0'; }
4171: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
1.395 albertel 4172: $symbparm,$udom,$uname,$section,1);
1.337 albertel 4173: if (defined($partgeneral)) { return $partgeneral; }
1.218 albertel 4174: }
1.395 albertel 4175: if ($recurse) { return undef; }
4176: my $pack_def=&packages_tab_default($filename,$varname);
4177: if (defined($pack_def)) { return $pack_def; }
1.71 www 4178:
1.48 www 4179: # ---------------------------------------------------- Any other user namespace
4180: } elsif ($realm eq 'environment') {
4181: # ----------------------------------------------------------------- environment
1.219 albertel 4182: if (($uname eq $ENV{'user.name'})&&($udom eq $ENV{'user.domain'})) {
4183: return $ENV{'environment.'.$spacequalifierrest};
4184: } else {
4185: my %returnhash=&userenvironment($udom,$uname,
4186: $spacequalifierrest);
4187: return $returnhash{$spacequalifierrest};
4188: }
1.28 www 4189: } elsif ($realm eq 'system') {
1.48 www 4190: # ----------------------------------------------------------------- system.time
4191: if ($space eq 'time') {
4192: return time;
4193: }
1.28 www 4194: }
1.48 www 4195: return '';
1.61 www 4196: }
4197:
1.395 albertel 4198: sub packages_tab_default {
4199: my ($uri,$varname)=@_;
4200: my (undef,$part,$name)=split(/\./,$varname);
4201: my $packages=&metadata($uri,'packages');
4202: foreach my $package (split(/,/,$packages)) {
4203: my ($pack_type,$pack_part)=split(/_/,$package,2);
1.468 albertel 4204: if (defined($packagetab{"$pack_type&$name&default"})) {
4205: return $packagetab{"$pack_type&$name&default"};
4206: }
4207: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
4208: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
1.395 albertel 4209: }
4210: }
4211: return undef;
4212: }
4213:
1.334 albertel 4214: sub add_prefix_and_part {
4215: my ($prefix,$part)=@_;
4216: my $keyroot;
4217: if (defined($prefix) && $prefix !~ /^__/) {
4218: # prefix that has a part already
4219: $keyroot=$prefix;
4220: } elsif (defined($prefix)) {
4221: # prefix that is missing a part
4222: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
4223: } else {
4224: # no prefix at all
4225: if (defined($part)) { $keyroot='_'.$part; }
4226: }
4227: return $keyroot;
4228: }
4229:
1.71 www 4230: # ---------------------------------------------------------------- Get metadata
4231:
4232: sub metadata {
1.176 www 4233: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
1.71 www 4234: $uri=&declutter($uri);
1.288 albertel 4235: # if it is a non metadata possible uri return quickly
1.293 matthew 4236: if (($uri eq '') || (($uri =~ m|^/*adm/|) && ($uri !~ m|^adm/includes|)) ||
1.423 albertel 4237: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
1.489 albertel 4238: ($uri =~ m|home/[^/]+/public_html/|)) {
1.468 albertel 4239: return undef;
1.288 albertel 4240: }
1.73 www 4241: my $filename=$uri;
4242: $uri=~s/\.meta$//;
1.172 www 4243: #
4244: # Is the metadata already cached?
1.177 www 4245: # Look at timestamp of caching
1.172 www 4246: # Everything is cached by the main uri, libraries are never directly cached
4247: #
1.428 albertel 4248: if (!defined($liburi)) {
4249: my ($result,$cached)=&is_cached(\%metacache,$uri,'meta');
4250: if (defined($cached)) { return $result->{':'.$what}; }
4251: }
4252: {
1.172 www 4253: #
4254: # Is this a recursive call for a library?
4255: #
1.453 albertel 4256: if (! exists($metacache{$uri})) {
4257: $metacache{$uri}={};
4258: }
1.171 www 4259: if ($liburi) {
4260: $liburi=&declutter($liburi);
4261: $filename=$liburi;
1.401 bowersj2 4262: } else {
1.428 albertel 4263: &devalidate_cache(\%metacache,$uri,'meta');
1.401 bowersj2 4264: }
1.140 www 4265: my %metathesekeys=();
1.73 www 4266: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
1.489 albertel 4267: my $metastring;
4268: if ($uri !~ m|^uploaded/|) {
1.523.2.5 albertel 4269: my $file=&filelocation('',&clutter($filename));
4270: push(@{$metacache{$uri.'.file'}},$file);
4271: $metastring=&getfile($file);
1.489 albertel 4272: }
1.208 albertel 4273: my $parser=HTML::LCParser->new(\$metastring);
1.71 www 4274: my $token;
1.140 www 4275: undef %metathesekeys;
1.71 www 4276: while ($token=$parser->get_token) {
1.339 albertel 4277: if ($token->[0] eq 'S') {
4278: if (defined($token->[2]->{'package'})) {
1.172 www 4279: #
4280: # This is a package - get package info
4281: #
1.339 albertel 4282: my $package=$token->[2]->{'package'};
4283: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
4284: if (defined($token->[2]->{'id'})) {
4285: $keyroot.='_'.$token->[2]->{'id'};
4286: }
1.453 albertel 4287: if ($metacache{$uri}->{':packages'}) {
4288: $metacache{$uri}->{':packages'}.=','.$package.$keyroot;
1.339 albertel 4289: } else {
1.453 albertel 4290: $metacache{$uri}->{':packages'}=$package.$keyroot;
1.339 albertel 4291: }
4292: foreach (keys %packagetab) {
1.432 albertel 4293: my $part=$keyroot;
4294: $part=~s/^\_//;
4295: if ($_=~/^\Q$package\E\&/ ||
4296: $_=~/^\Q$package\E_0\&/) {
1.339 albertel 4297: my ($pack,$name,$subp)=split(/\&/,$_);
1.395 albertel 4298: # ignore package.tab specified default values
4299: # here &package_tab_default() will fetch those
4300: if ($subp eq 'default') { next; }
1.339 albertel 4301: my $value=$packagetab{$_};
1.432 albertel 4302: my $unikey;
4303: if ($pack =~ /_0$/) {
4304: $unikey='parameter_0_'.$name;
4305: $part=0;
4306: } else {
4307: $unikey='parameter'.$keyroot.'_'.$name;
4308: }
1.339 albertel 4309: if ($subp eq 'display') {
4310: $value.=' [Part: '.$part.']';
4311: }
1.453 albertel 4312: $metacache{$uri}->{':'.$unikey.'.part'}=$part;
1.395 albertel 4313: $metathesekeys{$unikey}=1;
1.453 albertel 4314: unless (defined($metacache{$uri}->{':'.$unikey.'.'.$subp})) {
4315: $metacache{$uri}->{':'.$unikey.'.'.$subp}=$value;
1.339 albertel 4316: }
1.453 albertel 4317: if (defined($metacache{$uri}->{':'.$unikey.'.default'})) {
4318: $metacache{$uri}->{':'.$unikey}=
4319: $metacache{$uri}->{':'.$unikey.'.default'};
1.356 albertel 4320: }
1.339 albertel 4321: }
4322: }
4323: } else {
1.172 www 4324: #
4325: # This is not a package - some other kind of start tag
1.339 albertel 4326: #
4327: my $entry=$token->[1];
4328: my $unikey;
4329: if ($entry eq 'import') {
4330: $unikey='';
4331: } else {
4332: $unikey=$entry;
4333: }
4334: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
4335:
4336: if (defined($token->[2]->{'id'})) {
4337: $unikey.='_'.$token->[2]->{'id'};
4338: }
1.175 www 4339:
1.339 albertel 4340: if ($entry eq 'import') {
1.175 www 4341: #
4342: # Importing a library here
1.339 albertel 4343: #
4344: if ($depthcount<20) {
4345: my $location=$parser->get_text('/import');
4346: my $dir=$filename;
4347: $dir=~s|[^/]*$||;
4348: $location=&filelocation($dir,$location);
4349: foreach (sort(split(/\,/,&metadata($uri,'keys',
4350: $location,$unikey,
4351: $depthcount+1)))) {
1.453 albertel 4352: $metacache{$uri}->{':'.$_}=$metacache{$uri}->{':'.$_};
1.339 albertel 4353: $metathesekeys{$_}=1;
4354: }
4355: }
4356: } else {
4357:
4358: if (defined($token->[2]->{'name'})) {
4359: $unikey.='_'.$token->[2]->{'name'};
4360: }
4361: $metathesekeys{$unikey}=1;
4362: foreach (@{$token->[3]}) {
1.453 albertel 4363: $metacache{$uri}->{':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.339 albertel 4364: }
4365: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
1.453 albertel 4366: my $default=$metacache{$uri}->{':'.$unikey.'.default'};
1.339 albertel 4367: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
4368: # only ws inside the tag, and not in default, so use default
4369: # as value
1.453 albertel 4370: $metacache{$uri}->{':'.$unikey}=$default;
1.339 albertel 4371: } else {
1.321 albertel 4372: # either something interesting inside the tag or default
4373: # uninteresting
1.453 albertel 4374: $metacache{$uri}->{':'.$unikey}=$internaltext;
1.339 albertel 4375: }
1.172 www 4376: # end of not-a-package not-a-library import
1.339 albertel 4377: }
1.172 www 4378: # end of not-a-package start tag
1.339 albertel 4379: }
1.172 www 4380: # the next is the end of "start tag"
1.339 albertel 4381: }
4382: }
1.483 albertel 4383: my ($extension) = ($uri =~ /\.(\w+)$/);
4384: foreach my $key (sort(keys(%packagetab))) {
4385: #&logthis("extsion1 $extension $key !!");
4386: #no specific packages #how's our extension
4387: if ($key!~/^extension_\Q$extension\E&/) { next; }
1.488 albertel 4388: &metadata_create_package_def($uri,$key,'extension_'.$extension,
1.483 albertel 4389: \%metathesekeys);
4390: }
4391: if (!exists($metacache{$uri}->{':packages'})) {
4392: foreach my $key (sort(keys(%packagetab))) {
4393: #no specific packages well let's get default then
4394: if ($key!~/^default&/) { next; }
1.488 albertel 4395: &metadata_create_package_def($uri,$key,'default',
1.483 albertel 4396: \%metathesekeys);
4397: }
4398: }
1.338 www 4399: # are there custom rights to evaluate
1.453 albertel 4400: if ($metacache{$uri}->{':copyright'} eq 'custom') {
1.339 albertel 4401:
1.338 www 4402: #
4403: # Importing a rights file here
1.339 albertel 4404: #
4405: unless ($depthcount) {
1.453 albertel 4406: my $location=$metacache{$uri}->{':customdistributionfile'};
1.339 albertel 4407: my $dir=$filename;
4408: $dir=~s|[^/]*$||;
4409: $location=&filelocation($dir,$location);
4410: foreach (sort(split(/\,/,&metadata($uri,'keys',
4411: $location,'_rights',
4412: $depthcount+1)))) {
1.453 albertel 4413: $metacache{$uri}->{':'.$_}=$metacache{$uri}->{':'.$_};
1.339 albertel 4414: $metathesekeys{$_}=1;
4415: }
4416: }
4417: }
1.453 albertel 4418: $metacache{$uri}->{':keys'}=join(',',keys %metathesekeys);
4419: &metadata_generate_part0(\%metathesekeys,$metacache{$uri},$uri);
4420: $metacache{$uri}->{':allpossiblekeys'}=join(',',keys %metathesekeys);
4421: &do_cache(\%metacache,$uri,$metacache{$uri},'meta');
1.177 www 4422: # this is the end of "was not already recently cached
1.71 www 4423: }
1.428 albertel 4424: return $metacache{$uri}->{':'.$what};
1.261 albertel 4425: }
4426:
1.488 albertel 4427: sub metadata_create_package_def {
1.483 albertel 4428: my ($uri,$key,$package,$metathesekeys)=@_;
4429: my ($pack,$name,$subp)=split(/\&/,$key);
4430: if ($subp eq 'default') { next; }
4431:
4432: if (defined($metacache{$uri}->{':packages'})) {
4433: $metacache{$uri}->{':packages'}.=','.$package;
4434: } else {
4435: $metacache{$uri}->{':packages'}=$package;
4436: }
4437: my $value=$packagetab{$key};
4438: my $unikey;
4439: $unikey='parameter_0_'.$name;
4440: $metacache{$uri}->{':'.$unikey.'.part'}=0;
4441: $$metathesekeys{$unikey}=1;
4442: unless (defined($metacache{$uri}->{':'.$unikey.'.'.$subp})) {
4443: $metacache{$uri}->{':'.$unikey.'.'.$subp}=$value;
4444: }
4445: if (defined($metacache{$uri}->{':'.$unikey.'.default'})) {
4446: $metacache{$uri}->{':'.$unikey}=
4447: $metacache{$uri}->{':'.$unikey.'.default'};
4448: }
4449: }
4450:
1.261 albertel 4451: sub metadata_generate_part0 {
4452: my ($metadata,$metacache,$uri) = @_;
4453: my %allnames;
4454: foreach my $metakey (sort keys %$metadata) {
4455: if ($metakey=~/^parameter\_(.*)/) {
1.428 albertel 4456: my $part=$$metacache{':'.$metakey.'.part'};
4457: my $name=$$metacache{':'.$metakey.'.name'};
1.356 albertel 4458: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
1.261 albertel 4459: $allnames{$name}=$part;
4460: }
4461: }
4462: }
4463: foreach my $name (keys(%allnames)) {
4464: $$metadata{"parameter_0_$name"}=1;
1.428 albertel 4465: my $key=":parameter_0_$name";
1.261 albertel 4466: $$metacache{"$key.part"}='0';
4467: $$metacache{"$key.name"}=$name;
1.428 albertel 4468: $$metacache{"$key.type"}=$$metacache{':parameter_'.
1.261 albertel 4469: $allnames{$name}.'_'.$name.
4470: '.type'};
1.428 albertel 4471: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
1.261 albertel 4472: '.display'};
4473: my $expr='\\[Part: '.$allnames{$name}.'\\]';
1.479 albertel 4474: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
1.261 albertel 4475: $$metacache{"$key.display"}=$olddis;
4476: }
1.71 www 4477: }
4478:
1.301 www 4479: # ------------------------------------------------- Get the title of a resource
4480:
4481: sub gettitle {
4482: my $urlsymb=shift;
4483: my $symb=&symbread($urlsymb);
4484: unless ($symb) {
4485: unless ($urlsymb) { $urlsymb=$ENV{'request.filename'}; }
4486: return &metadata($urlsymb,'title');
4487: }
1.425 albertel 4488: my ($result,$cached)=&is_cached(\%titlecache,$symb,'title',600);
1.419 albertel 4489: if (defined($cached)) { return $result; }
1.409 www 4490: my ($map,$resid,$url)=&decode_symb($symb);
1.301 www 4491: my $title='';
4492: my %bighash;
4493: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
4494: &GDBM_READER(),0640)) {
4495: my $mapid=$bighash{'map_pc_'.&clutter($map)};
4496: $title=$bighash{'title_'.$mapid.'.'.$resid};
4497: untie %bighash;
4498: }
1.363 www 4499: $title=~s/\&colon\;/\:/gs;
1.301 www 4500: if ($title) {
1.425 albertel 4501: return &do_cache(\%titlecache,$symb,$title,'title');
1.301 www 4502: } else {
4503: return &metadata($urlsymb,'title');
4504: }
4505: }
4506:
1.31 www 4507: # ------------------------------------------------- Update symbolic store links
4508:
4509: sub symblist {
4510: my ($mapname,%newhash)=@_;
1.438 www 4511: $mapname=&deversion(&declutter($mapname));
1.31 www 4512: my %hash;
4513: if (($ENV{'request.course.fn'}) && (%newhash)) {
4514: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1.256 albertel 4515: &GDBM_WRCREAT(),0640)) {
1.191 harris41 4516: foreach (keys %newhash) {
1.438 www 4517: $hash{declutter($_)}=$mapname.'___'.&deversion($newhash{$_});
1.191 harris41 4518: }
1.31 www 4519: if (untie(%hash)) {
4520: return 'ok';
4521: }
4522: }
4523: }
4524: return 'error';
1.212 www 4525: }
4526:
4527: # --------------------------------------------------------------- Verify a symb
4528:
4529: sub symbverify {
1.510 www 4530: my ($symb,$thisurl)=@_;
4531: my $thisfn=$thisurl;
4532: # wrapper not part of symbs
4533: $thisfn=~s/^\/adm\/wrapper//;
1.439 www 4534: $thisfn=&declutter($thisfn);
1.215 www 4535: # direct jump to resource in page or to a sequence - will construct own symbs
4536: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
4537: # check URL part
1.409 www 4538: my ($map,$resid,$url)=&decode_symb($symb);
1.439 www 4539:
1.431 www 4540: unless ($url eq $thisfn) { return 0; }
1.213 www 4541:
1.216 www 4542: $symb=&symbclean($symb);
1.510 www 4543: $thisurl=&deversion($thisurl);
1.439 www 4544: $thisfn=&deversion($thisfn);
1.213 www 4545:
4546: my %bighash;
4547: my $okay=0;
1.431 www 4548:
1.213 www 4549: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.256 albertel 4550: &GDBM_READER(),0640)) {
1.510 www 4551: my $ids=$bighash{'ids_'.&clutter($thisurl)};
1.216 www 4552: unless ($ids) {
1.510 www 4553: $ids=$bighash{'ids_/'.$thisurl};
1.216 www 4554: }
4555: if ($ids) {
4556: # ------------------------------------------------------------------- Has ID(s)
4557: foreach (split(/\,/,$ids)) {
4558: my ($mapid,$resid)=split(/\./,$_);
4559: if (
4560: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
4561: eq $symb) {
4562: $okay=1;
4563: }
4564: }
4565: }
1.213 www 4566: untie(%bighash);
4567: }
4568: return $okay;
1.31 www 4569: }
4570:
1.210 www 4571: # --------------------------------------------------------------- Clean-up symb
4572:
4573: sub symbclean {
4574: my $symb=shift;
1.213 www 4575:
1.210 www 4576: # remove version from map
4577: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
1.215 www 4578:
1.210 www 4579: # remove version from URL
4580: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
1.213 www 4581:
1.507 www 4582: # remove wrapper
4583:
1.510 www 4584: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
1.210 www 4585: return $symb;
1.409 www 4586: }
4587:
4588: # ---------------------------------------------- Split symb to find map and url
1.429 albertel 4589:
4590: sub encode_symb {
4591: my ($map,$resid,$url)=@_;
4592: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
4593: }
1.409 www 4594:
4595: sub decode_symb {
1.413 www 4596: my ($map,$resid,$url)=split(/\_\_\_/,shift);
4597: return (&fixversion($map),$resid,&fixversion($url));
4598: }
4599:
4600: sub fixversion {
4601: my $fn=shift;
4602: if ($fn=~/^(adm|uploaded|public)/) { return $fn; }
1.435 www 4603: my %bighash;
4604: my $uri=&clutter($fn);
1.440 www 4605: my $key=$ENV{'request.course.id'}.'_'.$uri;
4606: # is this cached?
4607: my ($result,$cached)=&is_cached(\%courseresversioncache,$key,
4608: 'courseresversion',600);
4609: if (defined($cached)) { return $result; }
4610: # unfortunately not cached, or expired
1.435 www 4611: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.440 www 4612: &GDBM_READER(),0640)) {
4613: if ($bighash{'version_'.$uri}) {
4614: my $version=$bighash{'version_'.$uri};
1.444 www 4615: unless (($version eq 'mostrecent') ||
4616: ($version==&getversion($uri))) {
1.440 www 4617: $uri=~s/\.(\w+)$/\.$version\.$1/;
4618: }
4619: }
4620: untie %bighash;
1.413 www 4621: }
1.440 www 4622: return &do_cache
4623: (\%courseresversioncache,$key,&declutter($uri),'courseresversion');
1.438 www 4624: }
4625:
4626: sub deversion {
4627: my $url=shift;
4628: $url=~s/\.\d+\.(\w+)$/\.$1/;
4629: return $url;
1.210 www 4630: }
4631:
1.31 www 4632: # ------------------------------------------------------ Return symb list entry
4633:
4634: sub symbread {
1.249 www 4635: my ($thisfn,$donotrecurse)=@_;
1.523.2.4 albertel 4636: my $cache_str='request.symbread.cached.'.$thisfn;
4637: if (defined($ENV{$cache_str})) { return $ENV{$cache_str}; }
1.242 www 4638: # no filename provided? try from environment
1.44 www 4639: unless ($thisfn) {
1.523.2.2 albertel 4640: if ($ENV{'request.symb'}) {
1.523.2.4 albertel 4641: return $ENV{$cache_str}=&symbclean($ENV{'request.symb'});
1.523.2.2 albertel 4642: }
1.44 www 4643: $thisfn=$ENV{'request.filename'};
4644: }
1.242 www 4645: # is that filename actually a symb? Verify, clean, and return
4646: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
1.523.2.2 albertel 4647: if (&symbverify($thisfn,$1)) {
1.523.2.4 albertel 4648: return $ENV{$cache_str}=&symbclean($thisfn);
1.523.2.2 albertel 4649: }
1.242 www 4650: }
1.44 www 4651: $thisfn=declutter($thisfn);
1.31 www 4652: my %hash;
1.37 www 4653: my %bighash;
4654: my $syval='';
1.45 www 4655: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.481 raeburn 4656: my $targetfn = $thisfn;
4657: if ( ($thisfn =~ m/^uploaded\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
4658: $targetfn = 'adm/wrapper/'.$thisfn;
4659: }
1.31 www 4660: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1.256 albertel 4661: &GDBM_READER(),0640)) {
1.481 raeburn 4662: $syval=$hash{$targetfn};
1.37 www 4663: untie(%hash);
4664: }
4665: # ---------------------------------------------------------- There was an entry
4666: if ($syval) {
4667: unless ($syval=~/\_\d+$/) {
4668: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.44 www 4669: &appenv('request.ambiguous' => $thisfn);
1.523.2.4 albertel 4670: return $ENV{$cache_str}='';
1.37 www 4671: }
4672: $syval.=$1;
4673: }
4674: } else {
4675: # ------------------------------------------------------- Was not in symb table
4676: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.256 albertel 4677: &GDBM_READER(),0640)) {
1.37 www 4678: # ---------------------------------------------- Get ID(s) for current resource
1.280 www 4679: my $ids=$bighash{'ids_'.&clutter($thisfn)};
1.65 www 4680: unless ($ids) {
4681: $ids=$bighash{'ids_/'.$thisfn};
1.242 www 4682: }
4683: unless ($ids) {
4684: # alias?
4685: $ids=$bighash{'mapalias_'.$thisfn};
1.65 www 4686: }
1.37 www 4687: if ($ids) {
4688: # ------------------------------------------------------------------- Has ID(s)
4689: my @possibilities=split(/\,/,$ids);
1.39 www 4690: if ($#possibilities==0) {
4691: # ----------------------------------------------- There is only one possibility
1.37 www 4692: my ($mapid,$resid)=split(/\./,$ids);
4693: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
1.249 www 4694: } elsif (!$donotrecurse) {
1.39 www 4695: # ------------------------------------------ There is more than one possibility
4696: my $realpossible=0;
1.191 harris41 4697: foreach (@possibilities) {
1.39 www 4698: my $file=$bighash{'src_'.$_};
4699: if (&allowed('bre',$file)) {
4700: my ($mapid,$resid)=split(/\./,$_);
4701: if ($bighash{'map_type_'.$mapid} ne 'page') {
4702: $realpossible++;
4703: $syval=declutter($bighash{'map_id_'.$mapid}).
4704: '___'.$resid;
4705: }
4706: }
1.191 harris41 4707: }
1.39 www 4708: if ($realpossible!=1) { $syval=''; }
1.249 www 4709: } else {
4710: $syval='';
1.37 www 4711: }
4712: }
4713: untie(%bighash)
1.481 raeburn 4714: }
1.31 www 4715: }
1.62 www 4716: if ($syval) {
1.523.2.4 albertel 4717: return $ENV{$cache_str}=&symbclean($syval.'___'.$thisfn);
1.62 www 4718: }
1.31 www 4719: }
1.44 www 4720: &appenv('request.ambiguous' => $thisfn);
1.523.2.4 albertel 4721: return $ENV{$cache_str}='';
1.31 www 4722: }
4723:
4724: # ---------------------------------------------------------- Return random seed
4725:
1.32 www 4726: sub numval {
4727: my $txt=shift;
4728: $txt=~tr/A-J/0-9/;
4729: $txt=~tr/a-j/0-9/;
4730: $txt=~tr/K-T/0-9/;
4731: $txt=~tr/k-t/0-9/;
4732: $txt=~tr/U-Z/0-5/;
4733: $txt=~tr/u-z/0-5/;
4734: $txt=~s/\D//g;
1.523.2.10! albertel 4735: if ($_64bit) { if ($total > 2**32) { return -1; } }
1.32 www 4736: return int($txt);
1.368 albertel 4737: }
4738:
1.484 albertel 4739: sub numval2 {
4740: my $txt=shift;
4741: $txt=~tr/A-J/0-9/;
4742: $txt=~tr/a-j/0-9/;
4743: $txt=~tr/K-T/0-9/;
4744: $txt=~tr/k-t/0-9/;
4745: $txt=~tr/U-Z/0-5/;
4746: $txt=~tr/u-z/0-5/;
4747: $txt=~s/\D//g;
4748: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
4749: my $total;
4750: foreach my $val (@txts) { $total+=$val; }
1.523.2.10! albertel 4751: if ($_64bit) { if ($total > 2**32) { return -1; } }
1.484 albertel 4752: return int($total);
4753: }
4754:
1.368 albertel 4755: sub latest_rnd_algorithm_id {
1.501 albertel 4756: return '64bit3';
1.366 albertel 4757: }
1.32 www 4758:
1.503 albertel 4759: sub get_rand_alg {
4760: my ($courseid)=@_;
4761: if (!$courseid) { $courseid=(&Apache::lonxml::whichuser())[1]; }
4762: if ($courseid) {
4763: return $ENV{"course.$courseid.rndseed"};
4764: }
4765: return &latest_rnd_algorithm_id();
4766: }
4767:
1.523.2.9 albertel 4768: sub validCODE {
4769: my ($CODE)=@_;
4770: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
4771: return 0;
4772: }
4773:
1.491 albertel 4774: sub getCODE {
1.523.2.9 albertel 4775: if (&validCODE($ENV{'form.CODE'})) { return $ENV{'form.CODE'}; }
1.491 albertel 4776: if (defined($Apache::lonhomework::parsing_a_problem) &&
1.523.2.9 albertel 4777: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
1.491 albertel 4778: return $Apache::lonhomework::history{'resource.CODE'};
4779: }
4780: return undef;
4781: }
4782:
1.31 www 4783: sub rndseed {
1.155 albertel 4784: my ($symb,$courseid,$domain,$username)=@_;
1.366 albertel 4785:
4786: my ($wsymb,$wcourseid,$wdomain,$wusername)=&Apache::lonxml::whichuser();
1.155 albertel 4787: if (!$symb) {
1.366 albertel 4788: unless ($symb=$wsymb) { return time; }
4789: }
4790: if (!$courseid) { $courseid=$wcourseid; }
4791: if (!$domain) { $domain=$wdomain; }
4792: if (!$username) { $username=$wusername }
1.503 albertel 4793: my $which=&get_rand_alg();
1.491 albertel 4794: if (defined(&getCODE())) {
1.484 albertel 4795: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
1.501 albertel 4796: } elsif ($which eq '64bit3') {
4797: return &rndseed_64bit3($symb,$courseid,$domain,$username);
1.443 albertel 4798: } elsif ($which eq '64bit2') {
4799: return &rndseed_64bit2($symb,$courseid,$domain,$username);
1.366 albertel 4800: } elsif ($which eq '64bit') {
4801: return &rndseed_64bit($symb,$courseid,$domain,$username);
4802: }
4803: return &rndseed_32bit($symb,$courseid,$domain,$username);
4804: }
4805:
4806: sub rndseed_32bit {
4807: my ($symb,$courseid,$domain,$username)=@_;
4808: {
4809: use integer;
4810: my $symbchck=unpack("%32C*",$symb) << 27;
4811: my $symbseed=numval($symb) << 22;
4812: my $namechck=unpack("%32C*",$username) << 17;
4813: my $nameseed=numval($username) << 12;
4814: my $domainseed=unpack("%32C*",$domain) << 7;
4815: my $courseseed=unpack("%32C*",$courseid);
4816: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
4817: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
4818: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.523.2.10! albertel 4819: if ($_64bit) { $num=(($num<<32)>>32); }
1.366 albertel 4820: return $num;
4821: }
4822: }
4823:
4824: sub rndseed_64bit {
4825: my ($symb,$courseid,$domain,$username)=@_;
4826: {
4827: use integer;
4828: my $symbchck=unpack("%32S*",$symb) << 21;
4829: my $symbseed=numval($symb) << 10;
4830: my $namechck=unpack("%32S*",$username);
4831:
4832: my $nameseed=numval($username) << 21;
4833: my $domainseed=unpack("%32S*",$domain) << 10;
4834: my $courseseed=unpack("%32S*",$courseid);
4835:
4836: my $num1=$symbchck+$symbseed+$namechck;
4837: my $num2=$nameseed+$domainseed+$courseseed;
4838: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
4839: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.523.2.10! albertel 4840: if ($_64bit) { $num1=(($num1<<32)>>32); }
! 4841: if ($_64bit) { $num2=(($num2<<32)>>32); }
1.366 albertel 4842: return "$num1,$num2";
1.155 albertel 4843: }
1.366 albertel 4844: }
4845:
1.443 albertel 4846: sub rndseed_64bit2 {
4847: my ($symb,$courseid,$domain,$username)=@_;
4848: {
4849: use integer;
4850: # strings need to be an even # of cahracters long, it it is odd the
4851: # last characters gets thrown away
4852: my $symbchck=unpack("%32S*",$symb.' ') << 21;
4853: my $symbseed=numval($symb) << 10;
4854: my $namechck=unpack("%32S*",$username.' ');
4855:
4856: my $nameseed=numval($username) << 21;
1.501 albertel 4857: my $domainseed=unpack("%32S*",$domain.' ') << 10;
4858: my $courseseed=unpack("%32S*",$courseid.' ');
4859:
4860: my $num1=$symbchck+$symbseed+$namechck;
4861: my $num2=$nameseed+$domainseed+$courseseed;
4862: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
4863: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.523.2.10! albertel 4864: if ($_64bit) { $num1=(($num1<<32)>>32); }
! 4865: if ($_64bit) { $num2=(($num2<<32)>>32); }
1.501 albertel 4866: return "$num1,$num2";
4867: }
4868: }
4869:
4870: sub rndseed_64bit3 {
4871: my ($symb,$courseid,$domain,$username)=@_;
4872: {
4873: use integer;
4874: # strings need to be an even # of cahracters long, it it is odd the
4875: # last characters gets thrown away
4876: my $symbchck=unpack("%32S*",$symb.' ') << 21;
4877: my $symbseed=numval2($symb) << 10;
4878: my $namechck=unpack("%32S*",$username.' ');
4879:
4880: my $nameseed=numval2($username) << 21;
1.443 albertel 4881: my $domainseed=unpack("%32S*",$domain.' ') << 10;
4882: my $courseseed=unpack("%32S*",$courseid.' ');
4883:
4884: my $num1=$symbchck+$symbseed+$namechck;
4885: my $num2=$nameseed+$domainseed+$courseseed;
4886: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
4887: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.523.2.10! albertel 4888: if ($_64bit) { $num1=(($num1<<32)>>32); }
! 4889: if ($_64bit) { $num2=(($num2<<32)>>32); }
1.503 albertel 4890: return "$num1:$num2";
1.443 albertel 4891: }
4892: }
4893:
1.366 albertel 4894: sub rndseed_CODE_64bit {
4895: my ($symb,$courseid,$domain,$username)=@_;
1.155 albertel 4896: {
1.366 albertel 4897: use integer;
1.443 albertel 4898: my $symbchck=unpack("%32S*",$symb.' ') << 16;
1.484 albertel 4899: my $symbseed=numval2($symb);
1.491 albertel 4900: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
4901: my $CODEseed=numval(&getCODE());
1.443 albertel 4902: my $courseseed=unpack("%32S*",$courseid.' ');
1.484 albertel 4903: my $num1=$symbseed+$CODEchck;
4904: my $num2=$CODEseed+$courseseed+$symbchck;
4905: #&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
1.366 albertel 4906: #&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
1.523.2.10! albertel 4907: if ($_64bit) { $num1=(($num1<<32)>>32); }
! 4908: if ($_64bit) { $num2=(($num2<<32)>>32); }
1.503 albertel 4909: return "$num1:$num2";
1.366 albertel 4910: }
4911: }
4912:
4913: sub setup_random_from_rndseed {
4914: my ($rndseed)=@_;
1.503 albertel 4915: if ($rndseed =~/([,:])/) {
4916: my ($num1,$num2)=split(/[,:]/,$rndseed);
1.366 albertel 4917: &Math::Random::random_set_seed(abs($num1),abs($num2));
4918: } else {
4919: &Math::Random::random_set_seed_from_phrase($rndseed);
1.98 albertel 4920: }
1.36 albertel 4921: }
4922:
1.474 albertel 4923: sub latest_receipt_algorithm_id {
4924: return 'receipt2';
4925: }
4926:
1.480 www 4927: sub recunique {
4928: my $fucourseid=shift;
4929: my $unique;
4930: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2') {
4931: $unique=$ENV{"course.$fucourseid.internal.encseed"};
4932: } else {
4933: $unique=$perlvar{'lonReceipt'};
4934: }
4935: return unpack("%32C*",$unique);
4936: }
4937:
4938: sub recprefix {
4939: my $fucourseid=shift;
4940: my $prefix;
4941: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2') {
4942: $prefix=$ENV{"course.$fucourseid.internal.encpref"};
4943: } else {
4944: $prefix=$perlvar{'lonHostID'};
4945: }
4946: return unpack("%32C*",$prefix);
4947: }
4948:
1.76 www 4949: sub ireceipt {
1.474 albertel 4950: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
1.76 www 4951: my $cuname=unpack("%32C*",$funame);
4952: my $cudom=unpack("%32C*",$fudom);
4953: my $cucourseid=unpack("%32C*",$fucourseid);
4954: my $cusymb=unpack("%32C*",$fusymb);
1.480 www 4955: my $cunique=&recunique($fucourseid);
1.474 albertel 4956: my $cpart=unpack("%32S*",$part);
1.480 www 4957: my $return =&recprefix($fucourseid).'-';
1.474 albertel 4958: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
4959: $ENV{'request.state'} eq 'construct') {
4960: &Apache::lonxml::debug("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname).
4961: " and ".($cpart%$cudom));
4962:
4963: $return.= ($cunique%$cuname+
4964: $cunique%$cudom+
4965: $cusymb%$cuname+
4966: $cusymb%$cudom+
4967: $cucourseid%$cuname+
4968: $cucourseid%$cudom+
4969: $cpart%$cuname+
4970: $cpart%$cudom);
4971: } else {
4972: $return.= ($cunique%$cuname+
4973: $cunique%$cudom+
4974: $cusymb%$cuname+
4975: $cusymb%$cudom+
4976: $cucourseid%$cuname+
4977: $cucourseid%$cudom);
4978: }
4979: return $return;
1.76 www 4980: }
4981:
4982: sub receipt {
1.474 albertel 4983: my ($part)=@_;
4984: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
4985: return &ireceipt($name,$domain,$courseid,$symb,$part);
1.76 www 4986: }
1.260 ng 4987:
1.36 albertel 4988: # ------------------------------------------------------------ Serves up a file
1.472 albertel 4989: # returns either the contents of the file or
4990: # -1 if the file doesn't exist
1.481 raeburn 4991: #
4992: # if the target is a file that was uploaded via DOCS,
4993: # a check will be made to see if a current copy exists on the local server,
4994: # if it does this will be served, otherwise a copy will be retrieved from
4995: # the home server for the course and stored in /home/httpd/html/userfiles on
4996: # the local server.
1.472 albertel 4997:
1.36 albertel 4998: sub getfile {
1.481 raeburn 4999: my ($file,$caller) = @_;
1.482 albertel 5000:
5001: if ($file !~ m|^/*uploaded/(\w+)/(\w+)/(.+)$|) {
5002: # normal file from res space
1.472 albertel 5003: &repcopy($file);
1.481 raeburn 5004: return &readfile($file);
5005: }
1.482 albertel 5006:
5007: my $info;
5008: my $cdom = $1;
5009: my $cnum = $2;
5010: my $filename = $3;
5011: my $path = $Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles';
5012: my ($lwpresp,$rtncode);
5013: my $localfile = $path.'/'.$cdom.'/'.$cnum.'/'.$filename;
5014: if (-e "$localfile") {
5015: my @fileinfo = stat($localfile);
5016: $lwpresp = &getuploaded('HEAD',$file,$cdom,$cnum,\$info,\$rtncode);
5017: if ($lwpresp ne 'ok') {
5018: if ($rtncode eq '404') {
5019: unlink($localfile);
5020: }
1.517 albertel 5021: #my $ua=new LWP::UserAgent;
5022: #my $request=new HTTP::Request('GET',&tokenwrapper($file));
5023: #my $response=$ua->request($request);
5024: #if ($response->is_success()) {
5025: # return $response->content;
5026: # } else {
5027: # return -1;
5028: # }
1.482 albertel 5029: return -1;
5030: }
5031: if ($info < $fileinfo[9]) {
5032: return &readfile($localfile);
5033: }
5034: $info = '';
5035: $lwpresp = &getuploaded('GET',$file,$cdom,$cnum,\$info,\$rtncode);
5036: if ($lwpresp ne 'ok') {
5037: return -1;
5038: }
5039: } else {
5040: $lwpresp = &getuploaded('GET',$file,$cdom,$cnum,\$info,\$rtncode);
5041: if ($lwpresp ne 'ok') {
1.517 albertel 5042: my $ua=new LWP::UserAgent;
5043: my $request=new HTTP::Request('GET',&tokenwrapper($file));
5044: my $response=$ua->request($request);
5045: if ($response->is_success()) {
5046: return $response->content;
5047: } else {
5048: return -1;
5049: }
1.482 albertel 5050: }
5051: my @parts = ($cdom,$cnum);
5052: if ($filename =~ m|^(.+)/[^/]+$|) {
5053: push @parts, split(/\//,$1);
1.518 albertel 5054: }
1.482 albertel 5055: foreach my $part (@parts) {
5056: $path .= '/'.$part;
5057: if (!-e $path) {
5058: mkdir($path,0770);
5059: }
5060: }
5061: }
5062: open (FILE,">$localfile");
5063: print FILE $info;
5064: close(FILE);
5065: if ($caller eq 'uploadrep') {
5066: return 'ok';
5067: }
5068: return $info;
1.481 raeburn 5069: }
5070:
1.517 albertel 5071: sub tokenwrapper {
5072: my $uri=shift;
5073: $uri=~s/^http\:\/\/([^\/]+)//;
5074: $uri=~s/^\///;
5075: $ENV{'user.environment'}=~/\/([^\/]+)\.id/;
5076: my $token=$1;
5077: if ($uri=~/^uploaded\/([^\/]+)\/([^\/]+)\/([^\/]+)(\?\.*)*$/) {
5078: &appenv('userfile.'.$1.'/'.$2.'/'.$3 => $ENV{'request.course.id'});
5079: return 'http://'.$hostname{ &homeserver($2,$1)}.'/'.$uri.
5080: (($uri=~/\?/)?'&':'?').'token='.$token.
5081: '&tokenissued='.$perlvar{'lonHostID'};
5082: } else {
5083: return '/adm/notfound.html';
5084: }
5085: }
5086:
1.481 raeburn 5087: sub getuploaded {
5088: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
5089: $uri=~s/^\///;
5090: $uri = 'http://'.$hostname{ &homeserver($cnum,$cdom)}.'/raw/'.$uri;
5091: my $ua=new LWP::UserAgent;
5092: my $request=new HTTP::Request($reqtype,$uri);
5093: my $response=$ua->request($request);
5094: $$rtncode = $response->code;
1.482 albertel 5095: if (! $response->is_success()) {
5096: return 'failed';
5097: }
5098: if ($reqtype eq 'HEAD') {
1.486 www 5099: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
1.482 albertel 5100: } elsif ($reqtype eq 'GET') {
5101: $$info = $response->content;
1.472 albertel 5102: }
1.482 albertel 5103: return 'ok';
1.36 albertel 5104: }
5105:
1.481 raeburn 5106: sub readfile {
5107: my $file = shift;
5108: if ( (! -e $file ) || ($file eq '') ) { return -1; };
5109: my $fh;
5110: open($fh,"<$file");
5111: my $a='';
5112: while (<$fh>) { $a .=$_; }
5113: return $a;
5114: }
5115:
1.36 albertel 5116: sub filelocation {
5117: my ($dir,$file) = @_;
5118: my $location;
5119: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1.59 albertel 5120: if ($file=~m:^/~:) { # is a contruction space reference
5121: $location = $file;
5122: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.270 www 5123: } elsif ($file=~/^\/*uploaded/) { # is an uploaded file
5124: $location=$file;
1.36 albertel 5125: } else {
1.479 albertel 5126: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
1.464 albertel 5127: $file=~s:^/res/:/:;
1.59 albertel 5128: if ( !( $file =~ m:^/:) ) {
5129: $location = $dir. '/'.$file;
5130: } else {
5131: $location = '/home/httpd/html/res'.$file;
5132: }
1.36 albertel 5133: }
5134: $location=~s://+:/:g; # remove duplicate /
1.46 www 5135: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
1.475 albertel 5136: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
1.46 www 5137: return $location;
5138: }
1.36 albertel 5139:
1.46 www 5140: sub hreflocation {
5141: my ($dir,$file)=@_;
1.460 albertel 5142: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
5143: my $finalpath=filelocation($dir,$file);
5144: $finalpath=~s-^/home/httpd/html--;
1.462 albertel 5145: $finalpath=~s-^/home/(\w+)/public_html/-/~$1/-;
1.460 albertel 5146: return $finalpath;
5147: } elsif ($file=~m-^/home-) {
5148: $file=~s-^/home/httpd/html--;
1.462 albertel 5149: $file=~s-^/home/(\w+)/public_html/-/~$1/-;
1.460 albertel 5150: return $file;
1.46 www 5151: }
1.462 albertel 5152: return $file;
1.465 albertel 5153: }
5154:
5155: sub current_machine_domains {
5156: my $hostname=$hostname{$perlvar{'lonHostID'}};
5157: my @domains;
5158: while( my($id, $name) = each(%hostname)) {
1.467 matthew 5159: # &logthis("-$id-$name-$hostname-");
1.465 albertel 5160: if ($hostname eq $name) {
5161: push(@domains,$hostdom{$id});
5162: }
5163: }
5164: return @domains;
5165: }
5166:
5167: sub current_machine_ids {
5168: my $hostname=$hostname{$perlvar{'lonHostID'}};
5169: my @ids;
5170: while( my($id, $name) = each(%hostname)) {
1.467 matthew 5171: # &logthis("-$id-$name-$hostname-");
1.465 albertel 5172: if ($hostname eq $name) {
5173: push(@ids,$id);
5174: }
5175: }
5176: return @ids;
1.31 www 5177: }
5178:
5179: # ------------------------------------------------------------- Declutters URLs
5180:
5181: sub declutter {
5182: my $thisfn=shift;
1.479 albertel 5183: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
1.31 www 5184: $thisfn=~s/^\///;
5185: $thisfn=~s/^res\///;
1.235 www 5186: $thisfn=~s/\?.+$//;
1.268 www 5187: return $thisfn;
5188: }
5189:
5190: # ------------------------------------------------------------- Clutter up URLs
5191:
5192: sub clutter {
5193: my $thisfn='/'.&declutter(shift);
1.509 albertel 5194: unless ($thisfn=~/^\/(uploaded|adm|userfiles|ext|raw|priv|public)\//) {
1.270 www 5195: $thisfn='/res'.$thisfn;
5196: }
1.31 www 5197: return $thisfn;
1.12 www 5198: }
5199:
5200: # -------------------------------------------------------- Escape Special Chars
5201:
5202: sub escape {
5203: my $str=shift;
5204: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
5205: return $str;
5206: }
5207:
5208: # ----------------------------------------------------- Un-Escape Special Chars
5209:
5210: sub unescape {
5211: my $str=shift;
5212: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
5213: return $str;
5214: }
1.11 www 5215:
1.415 albertel 5216: sub mod_perl_version {
5217: if (defined($perlvar{'MODPERL2'})) {
5218: return 2;
5219: }
5220: return 1;
1.436 albertel 5221: }
5222:
5223: sub correct_line_ends {
5224: my ($result)=@_;
5225: $$result =~s/\r\n/\n/mg;
5226: $$result =~s/\r/\n/mg;
1.415 albertel 5227: }
1.1 albertel 5228: # ================================================================ Main Program
5229:
1.184 www 5230: sub goodbye {
1.204 albertel 5231: &logthis("Starting Shut down");
1.443 albertel 5232: #not converted to using infrastruture and probably shouldn't be
1.425 albertel 5233: &logthis(sprintf("%-20s is %s",'%badServerCache',scalar(%badServerCache)));
1.443 albertel 5234: #converted
1.425 albertel 5235: &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
1.443 albertel 5236: &logthis(sprintf("%-20s is %s",'%homecache',scalar(%homecache)));
1.425 albertel 5237: &logthis(sprintf("%-20s is %s",'%titlecache',scalar(%titlecache)));
5238: &logthis(sprintf("%-20s is %s",'%courseresdatacache',scalar(%courseresdatacache)));
5239: #1.1 only
5240: &logthis(sprintf("%-20s is %s",'%userresdatacache',scalar(%userresdatacache)));
5241: &logthis(sprintf("%-20s is %s",'%usectioncache',scalar(%usectioncache)));
1.440 www 5242: &logthis(sprintf("%-20s is %s",'%courseresversioncache',scalar(%courseresversioncache)));
5243: &logthis(sprintf("%-20s is %s",'%resversioncache',scalar(%resversioncache)));
1.184 www 5244: &flushcourselogs();
5245: &logthis("Shutting down");
1.362 albertel 5246: return DONE;
1.184 www 5247: }
5248:
1.179 www 5249: BEGIN {
1.523.2.10! albertel 5250: {
! 5251: use integer;
! 5252: my $test=(2**32)+1;
! 5253: if ($test != 0) { $_64bit=1; }
! 5254: }
1.228 harris41 5255: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
1.195 www 5256: unless ($readit) {
1.217 harris41 5257: {
1.448 albertel 5258: open(my $config,"</etc/httpd/conf/loncapa.conf");
1.217 harris41 5259:
5260: while (my $configline=<$config>) {
1.484 albertel 5261: if ($configline=~/\S/ && $configline =~ /^[^\#]*PerlSetVar/) {
1.1 albertel 5262: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 5263: chomp($varvalue);
1.1 albertel 5264: $perlvar{$varname}=$varvalue;
5265: }
5266: }
1.448 albertel 5267: close($config);
1.1 albertel 5268: }
1.227 harris41 5269: {
1.448 albertel 5270: open(my $config,"</etc/httpd/conf/loncapa_apache.conf");
1.227 harris41 5271:
5272: while (my $configline=<$config>) {
5273: if ($configline =~ /^[^\#]*PerlSetVar/) {
5274: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
5275: chomp($varvalue);
5276: $perlvar{$varname}=$varvalue;
5277: }
5278: }
1.448 albertel 5279: close($config);
1.227 harris41 5280: }
1.1 albertel 5281:
1.327 albertel 5282: # ------------------------------------------------------------ Read domain file
5283: {
5284: %domaindescription = ();
5285: %domain_auth_def = ();
5286: %domain_auth_arg_def = ();
1.448 albertel 5287: my $fh;
5288: if (open($fh,"<".$Apache::lonnet::perlvar{'lonTabDir'}.'/domain.tab')) {
1.327 albertel 5289: while (<$fh>) {
1.390 matthew 5290: next if (/^(\#|\s*$)/);
5291: # next if /^\#/;
1.327 albertel 5292: chomp;
1.403 www 5293: my ($domain, $domain_description, $def_auth, $def_auth_arg,
5294: $def_lang, $city, $longi, $lati) = split(/:/,$_);
5295: $domain_auth_def{$domain}=$def_auth;
1.327 albertel 5296: $domain_auth_arg_def{$domain}=$def_auth_arg;
1.403 www 5297: $domaindescription{$domain}=$domain_description;
5298: $domain_lang_def{$domain}=$def_lang;
5299: $domain_city{$domain}=$city;
5300: $domain_longi{$domain}=$longi;
5301: $domain_lati{$domain}=$lati;
5302:
1.448 albertel 5303: # &logthis("Domain.tab: $domain, $domain_auth_def{$domain}, $domain_auth_arg_def{$domain},$domaindescription{$domain}");
1.327 albertel 5304: # &logthis("Domain.tab: $domain ".$domaindescription{$domain} );
1.448 albertel 5305: }
1.327 albertel 5306: }
1.448 albertel 5307: close ($fh);
1.327 albertel 5308: }
5309:
5310:
1.1 albertel 5311: # ------------------------------------------------------------- Read hosts file
5312: {
1.448 albertel 5313: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
1.1 albertel 5314:
5315: while (my $configline=<$config>) {
1.303 matthew 5316: next if ($configline =~ /^(\#|\s*$)/);
1.154 www 5317: chomp($configline);
1.245 www 5318: my ($id,$domain,$role,$name,$ip,$domdescr)=split(/:/,$configline);
1.252 albertel 5319: if ($id && $domain && $role && $name && $ip) {
5320: $hostname{$id}=$name;
5321: $hostdom{$id}=$domain;
5322: $hostip{$id}=$ip;
1.300 albertel 5323: $iphost{$ip}=$id;
1.252 albertel 5324: if ($role eq 'library') { $libserv{$id}=$name; }
5325: } else {
5326: if ($configline) {
5327: &logthis("Skipping hosts.tab line -$configline-");
5328: }
1.245 www 5329: }
1.1 albertel 5330: }
1.448 albertel 5331: close($config);
1.1 albertel 5332: }
5333:
5334: # ------------------------------------------------------ Read spare server file
5335: {
1.448 albertel 5336: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
1.1 albertel 5337:
5338: while (my $configline=<$config>) {
5339: chomp($configline);
1.284 matthew 5340: if ($configline) {
1.1 albertel 5341: $spareid{$configline}=1;
5342: }
5343: }
1.448 albertel 5344: close($config);
1.1 albertel 5345: }
1.11 www 5346: # ------------------------------------------------------------ Read permissions
5347: {
1.448 albertel 5348: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
1.11 www 5349:
5350: while (my $configline=<$config>) {
1.448 albertel 5351: chomp($configline);
5352: if ($configline) {
5353: my ($role,$perm)=split(/ /,$configline);
5354: if ($perm ne '') { $pr{$role}=$perm; }
5355: }
1.11 www 5356: }
1.448 albertel 5357: close($config);
1.11 www 5358: }
5359:
5360: # -------------------------------------------- Read plain texts for permissions
5361: {
1.448 albertel 5362: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
1.11 www 5363:
5364: while (my $configline=<$config>) {
1.448 albertel 5365: chomp($configline);
5366: if ($configline) {
5367: my ($short,$plain)=split(/:/,$configline);
5368: if ($plain ne '') { $prp{$short}=$plain; }
5369: }
1.135 www 5370: }
1.448 albertel 5371: close($config);
1.135 www 5372: }
5373:
5374: # ---------------------------------------------------------- Read package table
5375: {
1.448 albertel 5376: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
1.135 www 5377:
5378: while (my $configline=<$config>) {
1.483 albertel 5379: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
1.448 albertel 5380: chomp($configline);
5381: my ($short,$plain)=split(/:/,$configline);
5382: my ($pack,$name)=split(/\&/,$short);
5383: if ($plain ne '') {
5384: $packagetab{$pack.'&'.$name.'&name'}=$name;
5385: $packagetab{$short}=$plain;
5386: }
1.11 www 5387: }
1.448 albertel 5388: close($config);
1.329 matthew 5389: }
5390:
5391: # ------------- set up temporary directory
5392: {
5393: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
5394:
1.11 www 5395: }
5396:
1.71 www 5397: %metacache=();
1.185 www 5398:
1.281 www 5399: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
1.186 www 5400: $dumpcount=0;
1.22 www 5401:
1.163 harris41 5402: &logtouch();
1.12 www 5403: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.195 www 5404: $readit=1;
5405: }
1.1 albertel 5406: }
1.179 www 5407:
1.1 albertel 5408: 1;
1.191 harris41 5409: __END__
5410:
1.243 albertel 5411: =pod
5412:
1.191 harris41 5413: =head1 NAME
5414:
1.243 albertel 5415: Apache::lonnet - Subroutines to ask questions about things in the network.
1.191 harris41 5416:
5417: =head1 SYNOPSIS
5418:
1.243 albertel 5419: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
1.191 harris41 5420:
5421: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
5422:
1.243 albertel 5423: Common parameters:
5424:
5425: =over 4
5426:
5427: =item *
5428:
5429: $uname : an internal username (if $cname expecting a course Id specifically)
5430:
5431: =item *
5432:
5433: $udom : a domain (if $cdom expecting a course's domain specifically)
5434:
5435: =item *
5436:
5437: $symb : a resource instance identifier
5438:
5439: =item *
5440:
5441: $namespace : the name of a .db file that contains the data needed or
5442: being set.
5443:
5444: =back
5445:
1.394 bowersj2 5446: =head1 OVERVIEW
1.191 harris41 5447:
1.394 bowersj2 5448: lonnet provides subroutines which interact with the
5449: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
5450: about classes, users, and resources.
1.243 albertel 5451:
5452: For many of these objects you can also use this to store data about
5453: them or modify them in various ways.
1.191 harris41 5454:
1.394 bowersj2 5455: =head2 Symbs
1.191 harris41 5456:
1.394 bowersj2 5457: To identify a specific instance of a resource, LON-CAPA uses symbols
5458: or "symbs"X<symb>. These identifiers are built from the URL of the
5459: map, the resource number of the resource in the map, and the URL of
5460: the resource itself. The latter is somewhat redundant, but might help
5461: if maps change.
5462:
5463: An example is
5464:
5465: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
5466:
5467: The respective map entry is
5468:
5469: <resource id="19" src="/res/msu/korte/tests/part12.problem"
5470: title="Problem 2">
5471: </resource>
5472:
5473: Symbs are used by the random number generator, as well as to store and
5474: restore data specific to a certain instance of for example a problem.
5475:
5476: =head2 Storing And Retrieving Data
5477:
5478: X<store()>X<cstore()>X<restore()>Three of the most important functions
5479: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
5480: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
5481: is is the non-critical message twin of cstore. These functions are for
5482: handlers to store a perl hash to a user's permanent data space in an
5483: easy manner, and to retrieve it again on another call. It is expected
5484: that a handler would use this once at the beginning to retrieve data,
5485: and then again once at the end to send only the new data back.
5486:
5487: The data is stored in the user's data directory on the user's
5488: homeserver under the ID of the course.
5489:
5490: The hash that is returned by restore will have all of the previous
5491: value for all of the elements of the hash.
5492:
5493: Example:
5494:
5495: #creating a hash
5496: my %hash;
5497: $hash{'foo'}='bar';
5498:
5499: #storing it
5500: &Apache::lonnet::cstore(\%hash);
5501:
5502: #changing a value
5503: $hash{'foo'}='notbar';
5504:
5505: #adding a new value
5506: $hash{'bar'}='foo';
5507: &Apache::lonnet::cstore(\%hash);
5508:
5509: #retrieving the hash
5510: my %history=&Apache::lonnet::restore();
5511:
5512: #print the hash
5513: foreach my $key (sort(keys(%history))) {
5514: print("\%history{$key} = $history{$key}");
5515: }
5516:
5517: Will print out:
1.191 harris41 5518:
1.394 bowersj2 5519: %history{1:foo} = bar
5520: %history{1:keys} = foo:timestamp
5521: %history{1:timestamp} = 990455579
5522: %history{2:bar} = foo
5523: %history{2:foo} = notbar
5524: %history{2:keys} = foo:bar:timestamp
5525: %history{2:timestamp} = 990455580
5526: %history{bar} = foo
5527: %history{foo} = notbar
5528: %history{timestamp} = 990455580
5529: %history{version} = 2
5530:
5531: Note that the special hash entries C<keys>, C<version> and
5532: C<timestamp> were added to the hash. C<version> will be equal to the
5533: total number of versions of the data that have been stored. The
5534: C<timestamp> attribute will be the UNIX time the hash was
5535: stored. C<keys> is available in every historical section to list which
5536: keys were added or changed at a specific historical revision of a
5537: hash.
5538:
5539: B<Warning>: do not store the hash that restore returns directly. This
5540: will cause a mess since it will restore the historical keys as if the
5541: were new keys. I.E. 1:foo will become 1:1:foo etc.
1.191 harris41 5542:
1.394 bowersj2 5543: Calling convention:
1.191 harris41 5544:
1.394 bowersj2 5545: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
5546: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
1.191 harris41 5547:
1.394 bowersj2 5548: For more detailed information, see lonnet specific documentation.
1.191 harris41 5549:
1.394 bowersj2 5550: =head1 RETURN MESSAGES
1.191 harris41 5551:
1.394 bowersj2 5552: =over 4
1.191 harris41 5553:
1.394 bowersj2 5554: =item * B<con_lost>: unable to contact remote host
1.191 harris41 5555:
1.394 bowersj2 5556: =item * B<con_delayed>: unable to contact remote host, message will be delivered
5557: when the connection is brought back up
1.191 harris41 5558:
1.394 bowersj2 5559: =item * B<con_failed>: unable to contact remote host and unable to save message
5560: for later delivery
1.191 harris41 5561:
1.394 bowersj2 5562: =item * B<error:>: an error a occured, a description of the error follows the :
1.191 harris41 5563:
1.394 bowersj2 5564: =item * B<no_such_host>: unable to fund a host associated with the user/domain
1.243 albertel 5565: that was requested
1.191 harris41 5566:
1.243 albertel 5567: =back
1.191 harris41 5568:
1.243 albertel 5569: =head1 PUBLIC SUBROUTINES
1.191 harris41 5570:
1.243 albertel 5571: =head2 Session Environment Functions
1.191 harris41 5572:
1.243 albertel 5573: =over 4
1.191 harris41 5574:
1.394 bowersj2 5575: =item *
5576: X<appenv()>
5577: B<appenv(%hash)>: the value of %hash is written to
5578: the user envirnoment file, and will be restored for each access this
5579: user makes during this session, also modifies the %ENV for the current
5580: process
1.191 harris41 5581:
5582: =item *
1.394 bowersj2 5583: X<delenv()>
5584: B<delenv($regexp)>: removes all items from the session
5585: environment file that matches the regular expression in $regexp. The
5586: values are also delted from the current processes %ENV.
1.191 harris41 5587:
1.243 albertel 5588: =back
5589:
5590: =head2 User Information
1.191 harris41 5591:
1.243 albertel 5592: =over 4
1.191 harris41 5593:
5594: =item *
1.394 bowersj2 5595: X<queryauthenticate()>
5596: B<queryauthenticate($uname,$udom)>: try to determine user's current
1.191 harris41 5597: authentication scheme
5598:
5599: =item *
1.394 bowersj2 5600: X<authenticate()>
5601: B<authenticate($uname,$upass,$udom)>: try to
5602: authenticate user from domain's lib servers (first use the current
5603: one). C<$upass> should be the users password.
1.191 harris41 5604:
5605: =item *
1.394 bowersj2 5606: X<homeserver()>
5607: B<homeserver($uname,$udom)>: find the server which has
5608: the user's directory and files (there must be only one), this caches
5609: the answer, and also caches if there is a borken connection.
1.191 harris41 5610:
5611: =item *
1.394 bowersj2 5612: X<idget()>
5613: B<idget($udom,@ids)>: find the usernames behind a list of IDs
5614: (IDs are a unique resource in a domain, there must be only 1 ID per
5615: username, and only 1 username per ID in a specific domain) (returns
5616: hash: id=>name,id=>name)
1.191 harris41 5617:
5618: =item *
1.394 bowersj2 5619: X<idrget()>
5620: B<idrget($udom,@unames)>: find the IDs behind a list of
5621: usernames (returns hash: name=>id,name=>id)
1.191 harris41 5622:
5623: =item *
1.394 bowersj2 5624: X<idput()>
5625: B<idput($udom,%ids)>: store away a list of names and associated IDs
1.191 harris41 5626:
5627: =item *
1.394 bowersj2 5628: X<rolesinit()>
5629: B<rolesinit($udom,$username,$authhost)>: get user privileges
1.243 albertel 5630:
5631: =item *
1.394 bowersj2 5632: X<usection()>
5633: B<usection($udom,$uname,$cname)>: finds the section of student in the
1.243 albertel 5634: course $cname, return section name/number or '' for "not in course"
5635: and '-1' for "no section"
5636:
5637: =item *
1.394 bowersj2 5638: X<userenvironment()>
5639: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
1.243 albertel 5640: passed in @what from the requested user's environment, returns a hash
5641:
5642: =back
5643:
5644: =head2 User Roles
5645:
5646: =over 4
5647:
5648: =item *
5649:
5650: allowed($priv,$uri) : check for a user privilege; returns codes for allowed
5651: actions
5652: F: full access
5653: U,I,K: authentication modes (cxx only)
5654: '': forbidden
5655: 1: user needs to choose course
5656: 2: browse allowed
5657:
5658: =item *
5659:
5660: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
5661: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
5662: and course level
5663:
5664: =item *
5665:
5666: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
5667: explanation of a user role term
5668:
5669: =back
5670:
5671: =head2 User Modification
5672:
5673: =over 4
5674:
5675: =item *
5676:
5677: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
5678: user for the level given by URL. Optional start and end dates (leave empty
5679: string or zero for "no date")
1.191 harris41 5680:
5681: =item *
5682:
1.243 albertel 5683: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
5684: change a users, password, possible return values are: ok,
5685: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
5686: refused
1.191 harris41 5687:
5688: =item *
5689:
1.243 albertel 5690: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
1.191 harris41 5691:
5692: =item *
5693:
1.243 albertel 5694: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
5695: modify user
1.191 harris41 5696:
5697: =item *
5698:
1.286 matthew 5699: modifystudent
5700:
5701: modify a students enrollment and identification information.
5702: The course id is resolved based on the current users environment.
5703: This means the envoking user must be a course coordinator or otherwise
5704: associated with a course.
5705:
1.297 matthew 5706: This call is essentially a wrapper for lonnet::modifyuser and
5707: lonnet::modify_student_enrollment
1.286 matthew 5708:
5709: Inputs:
5710:
5711: =over 4
5712:
5713: =item B<$udom> Students loncapa domain
5714:
5715: =item B<$uname> Students loncapa login name
5716:
5717: =item B<$uid> Students id/student number
5718:
5719: =item B<$umode> Students authentication mode
5720:
5721: =item B<$upass> Students password
5722:
5723: =item B<$first> Students first name
5724:
5725: =item B<$middle> Students middle name
5726:
5727: =item B<$last> Students last name
5728:
5729: =item B<$gene> Students generation
5730:
5731: =item B<$usec> Students section in course
5732:
5733: =item B<$end> Unix time of the roles expiration
5734:
5735: =item B<$start> Unix time of the roles start date
5736:
5737: =item B<$forceid> If defined, allow $uid to be changed
5738:
5739: =item B<$desiredhome> server to use as home server for student
5740:
5741: =back
1.297 matthew 5742:
5743: =item *
5744:
5745: modify_student_enrollment
5746:
5747: Change a students enrollment status in a class. The environment variable
5748: 'role.request.course' must be defined for this function to proceed.
5749:
5750: Inputs:
5751:
5752: =over 4
5753:
5754: =item $udom, students domain
5755:
5756: =item $uname, students name
5757:
5758: =item $uid, students user id
5759:
5760: =item $first, students first name
5761:
5762: =item $middle
5763:
5764: =item $last
5765:
5766: =item $gene
5767:
5768: =item $usec
5769:
5770: =item $end
5771:
5772: =item $start
5773:
5774: =back
5775:
1.191 harris41 5776:
5777: =item *
5778:
1.243 albertel 5779: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
5780: custom role; give a custom role to a user for the level given by URL. Specify
5781: name and domain of role author, and role name
1.191 harris41 5782:
5783: =item *
5784:
1.243 albertel 5785: revokerole($udom,$uname,$url,$role) : revoke a role for url
1.191 harris41 5786:
5787: =item *
5788:
1.243 albertel 5789: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
5790:
5791: =back
5792:
5793: =head2 Course Infomation
5794:
5795: =over 4
1.191 harris41 5796:
5797: =item *
5798:
1.243 albertel 5799: coursedescription($courseid) : course description
1.191 harris41 5800:
5801: =item *
5802:
1.243 albertel 5803: courseresdata($coursenum,$coursedomain,@which) : request for current
5804: parameter setting for a specific course, @what should be a list of
5805: parameters to ask about. This routine caches answers for 5 minutes.
5806:
5807: =back
5808:
5809: =head2 Course Modification
5810:
5811: =over 4
1.191 harris41 5812:
5813: =item *
5814:
1.243 albertel 5815: writecoursepref($courseid,%prefs) : write preferences (environment
5816: database) for a course
1.191 harris41 5817:
5818: =item *
5819:
1.243 albertel 5820: createcourse($udom,$description,$url) : make/modify course
5821:
5822: =back
5823:
5824: =head2 Resource Subroutines
5825:
5826: =over 4
1.191 harris41 5827:
5828: =item *
5829:
1.243 albertel 5830: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
1.191 harris41 5831:
5832: =item *
5833:
1.243 albertel 5834: repcopy($filename) : subscribes to the requested file, and attempts to
5835: replicate from the owning library server, Might return
5836: HTTP_SERVICE_UNAVAILABLE, HTTP_NOT_FOUND, FORBIDDEN, OK, or
5837: HTTP_BAD_REQUEST, also attempts to grab the metadata for the
5838: resource. Expects the local filesystem pathname
5839: (/home/httpd/html/res/....)
5840:
5841: =back
5842:
5843: =head2 Resource Information
5844:
5845: =over 4
1.191 harris41 5846:
5847: =item *
5848:
1.243 albertel 5849: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
5850: a vairety of different possible values, $varname should be a request
5851: string, and the other parameters can be used to specify who and what
5852: one is asking about.
5853:
5854: Possible values for $varname are environment.lastname (or other item
5855: from the envirnment hash), user.name (or someother aspect about the
5856: user), resource.0.maxtries (or some other part and parameter of a
5857: resource)
1.204 albertel 5858:
5859: =item *
5860:
1.243 albertel 5861: directcondval($number) : get current value of a condition; reads from a state
5862: string
1.204 albertel 5863:
5864: =item *
5865:
1.243 albertel 5866: condval($condidx) : value of condition index based on state
1.204 albertel 5867:
5868: =item *
5869:
1.243 albertel 5870: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
5871: resource's metadata, $what should be either a specific key, or either
5872: 'keys' (to get a list of possible keys) or 'packages' to get a list of
5873: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
5874:
5875: this function automatically caches all requests
1.191 harris41 5876:
5877: =item *
5878:
1.243 albertel 5879: metadata_query($query,$custom,$customshow) : make a metadata query against the
5880: network of library servers; returns file handle of where SQL and regex results
5881: will be stored for query
1.191 harris41 5882:
5883: =item *
5884:
1.243 albertel 5885: symbread($filename) : return symbolic list entry (filename argument optional);
5886: returns the data handle
1.191 harris41 5887:
5888: =item *
5889:
1.243 albertel 5890: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
5891: a possible symb for the URL in $thisfn, returns a 1 on success, 0 on
5892: failure, user must be in a course, as it assumes the existance of the
5893: course initi hash, and uses $ENV('request.course.id'}
5894:
1.191 harris41 5895:
5896: =item *
5897:
1.243 albertel 5898: symbclean($symb) : removes versions numbers from a symb, returns the
5899: cleaned symb
1.191 harris41 5900:
5901: =item *
5902:
1.243 albertel 5903: is_on_map($uri) : checks if the $uri is somewhere on the current
5904: course map, user must be in a course for it to work.
1.191 harris41 5905:
5906: =item *
5907:
1.243 albertel 5908: numval($salt) : return random seed value (addend for rndseed)
1.191 harris41 5909:
5910: =item *
5911:
1.243 albertel 5912: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
5913: a random seed, all arguments are optional, if they aren't sent it uses the
5914: environment to derive them. Note: if symb isn't sent and it can't get one
5915: from &symbread it will use the current time as its return value
1.191 harris41 5916:
5917: =item *
5918:
1.243 albertel 5919: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
5920: unfakeable, receipt
1.191 harris41 5921:
5922: =item *
5923:
1.243 albertel 5924: receipt() : API to ireceipt working off of ENV values; given out to users
1.191 harris41 5925:
5926: =item *
5927:
1.243 albertel 5928: countacc($url) : count the number of accesses to a given URL
1.191 harris41 5929:
5930: =item *
5931:
1.243 albertel 5932: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
1.191 harris41 5933:
5934: =item *
5935:
1.243 albertel 5936: checkin($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 $tcrsid)
1.191 harris41 5937:
5938: =item *
5939:
1.243 albertel 5940: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
1.191 harris41 5941:
5942: =item *
5943:
1.243 albertel 5944: devalidate($symb) : devalidate temporary spreadsheet calculations,
5945: forcing spreadsheet to reevaluate the resource scores next time.
5946:
5947: =back
5948:
5949: =head2 Storing/Retreiving Data
5950:
5951: =over 4
1.191 harris41 5952:
5953: =item *
5954:
1.243 albertel 5955: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
5956: for this url; hashref needs to be given and should be a \%hashname; the
5957: remaining args aren't required and if they aren't passed or are '' they will
5958: be derived from the ENV
1.191 harris41 5959:
5960: =item *
5961:
1.243 albertel 5962: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
5963: uses critical subroutine
1.191 harris41 5964:
5965: =item *
5966:
1.243 albertel 5967: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
5968: all args are optional
1.191 harris41 5969:
5970: =item *
5971:
1.243 albertel 5972: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
5973: works very similar to store/cstore, but all data is stored in a
5974: temporary location and can be reset using tmpreset, $storehash should
5975: be a hash reference, returns nothing on success
1.191 harris41 5976:
5977: =item *
5978:
1.243 albertel 5979: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
5980: similar to restore, but all data is stored in a temporary location and
5981: can be reset using tmpreset. Returns a hash of values on success,
5982: error string otherwise.
1.191 harris41 5983:
5984: =item *
5985:
1.243 albertel 5986: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
5987: deltes all keys for $symb form the temporary storage hash.
1.191 harris41 5988:
5989: =item *
5990:
1.243 albertel 5991: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
5992: reference filled in from namesp ($udom and $uname are optional)
1.191 harris41 5993:
5994: =item *
5995:
1.243 albertel 5996: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
5997: namesp ($udom and $uname are optional)
1.191 harris41 5998:
5999: =item *
6000:
1.243 albertel 6001: dump($namespace,$udom,$uname,$regexp) :
6002: dumps the complete (or key matching regexp) namespace into a hash
6003: ($udom, $uname and $regexp are optional)
1.449 matthew 6004:
6005: =item *
6006:
6007: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
6008: $store can be a scalar, an array reference, or if the amount to be
6009: incremented is > 1, a hash reference.
6010:
6011: ($udom and $uname are optional)
1.191 harris41 6012:
6013: =item *
6014:
1.243 albertel 6015: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
6016: ($udom and $uname are optional)
1.191 harris41 6017:
6018: =item *
6019:
1.243 albertel 6020: cput($namespace,$storehash,$udom,$uname) : critical put
6021: ($udom and $uname are optional)
1.191 harris41 6022:
6023: =item *
6024:
1.243 albertel 6025: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
6026: reference filled in from namesp (encrypts the return communication)
6027: ($udom and $uname are optional)
1.191 harris41 6028:
6029: =item *
6030:
1.243 albertel 6031: log($udom,$name,$home,$message) : write to permanent log for user; use
6032: critical subroutine
6033:
6034: =back
6035:
6036: =head2 Network Status Functions
6037:
6038: =over 4
1.191 harris41 6039:
6040: =item *
6041:
6042: dirlist($uri) : return directory list based on URI
6043:
6044: =item *
6045:
1.243 albertel 6046: spareserver() : find server with least workload from spare.tab
6047:
6048: =back
6049:
6050: =head2 Apache Request
6051:
6052: =over 4
1.191 harris41 6053:
6054: =item *
6055:
1.243 albertel 6056: ssi($url,%hash) : server side include, does a complete request cycle on url to
6057: localhost, posts hash
6058:
6059: =back
6060:
6061: =head2 Data to String to Data
6062:
6063: =over 4
1.191 harris41 6064:
6065: =item *
6066:
1.243 albertel 6067: hash2str(%hash) : convert a hash into a string complete with escaping and '='
6068: and '&' separators, supports elements that are arrayrefs and hashrefs
1.191 harris41 6069:
6070: =item *
6071:
1.243 albertel 6072: hashref2str($hashref) : convert a hashref into a string complete with
6073: escaping and '=' and '&' separators, supports elements that are
6074: arrayrefs and hashrefs
1.191 harris41 6075:
6076: =item *
6077:
1.243 albertel 6078: arrayref2str($arrayref) : convert an arrayref into a string complete
6079: with escaping and '&' separators, supports elements that are arrayrefs
6080: and hashrefs
1.191 harris41 6081:
6082: =item *
6083:
1.243 albertel 6084: str2hash($string) : convert string to hash using unescaping and
6085: splitting on '=' and '&', supports elements that are arrayrefs and
6086: hashrefs
1.191 harris41 6087:
6088: =item *
6089:
1.243 albertel 6090: str2array($string) : convert string to hash using unescaping and
6091: splitting on '&', supports elements that are arrayrefs and hashrefs
6092:
6093: =back
6094:
6095: =head2 Logging Routines
6096:
6097: =over 4
6098:
6099: These routines allow one to make log messages in the lonnet.log and
6100: lonnet.perm logfiles.
1.191 harris41 6101:
6102: =item *
6103:
1.243 albertel 6104: logtouch() : make sure the logfile, lonnet.log, exists
1.191 harris41 6105:
6106: =item *
6107:
1.243 albertel 6108: logthis() : append message to the normal lonnet.log file, it gets
6109: preiodically rolled over and deleted.
1.191 harris41 6110:
6111: =item *
6112:
1.243 albertel 6113: logperm() : append a permanent message to lonnet.perm.log, this log
6114: file never gets deleted by any automated portion of the system, only
6115: messages of critical importance should go in here.
6116:
6117: =back
6118:
6119: =head2 General File Helper Routines
6120:
6121: =over 4
1.191 harris41 6122:
6123: =item *
6124:
1.481 raeburn 6125: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
6126: (a) files in /uploaded
6127: (i) If a local copy of the file exists -
6128: compares modification date of local copy with last-modified date for
6129: definitive version stored on home server for course. If local copy is
6130: stale, requests a new version from the home server and stores it.
6131: If the original has been removed from the home server, then local copy
6132: is unlinked.
6133: (ii) If local copy does not exist -
6134: requests the file from the home server and stores it.
6135:
6136: If $caller is 'uploadrep':
6137: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
6138: for request for files originally uploaded via DOCS.
6139: - returns 'ok' if fresh local copy now available, -1 otherwise.
6140:
6141: Otherwise:
6142: This indicates a call from the content generation phase of the request.
6143: - returns the entire contents of the file or -1.
6144:
6145: (b) files in /res
6146: - returns the entire contents of a file or -1;
6147: it properly subscribes to and replicates the file if neccessary.
1.191 harris41 6148:
6149: =item *
6150:
1.243 albertel 6151: filelocation($dir,$file) : returns file system location of a file
6152: based on URI; meant to be "fairly clean" absolute reference, $dir is a
6153: directory that relative $file lookups are to looked in ($dir of /a/dir
6154: and a file of ../bob will become /a/bob)
1.191 harris41 6155:
6156: =item *
6157:
6158: hreflocation($dir,$file) : returns file system location or a URL; same as
6159: filelocation except for hrefs
6160:
6161: =item *
6162:
6163: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
6164:
1.243 albertel 6165: =back
6166:
6167: =head2 HTTP Helper Routines
6168:
6169: =over 4
6170:
1.191 harris41 6171: =item *
6172:
6173: escape() : unpack non-word characters into CGI-compatible hex codes
6174:
6175: =item *
6176:
6177: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
6178:
1.243 albertel 6179: =back
6180:
6181: =head1 PRIVATE SUBROUTINES
6182:
6183: =head2 Underlying communication routines (Shouldn't call)
6184:
6185: =over 4
6186:
6187: =item *
6188:
6189: subreply() : tries to pass a message to lonc, returns con_lost if incapable
6190:
6191: =item *
6192:
6193: reply() : uses subreply to send a message to remote machine, logs all failures
6194:
6195: =item *
6196:
6197: critical() : passes a critical message to another server; if cannot
6198: get through then place message in connection buffer directory and
6199: returns con_delayed, if incapable of saving message, returns
6200: con_failed
6201:
6202: =item *
6203:
6204: reconlonc() : tries to reconnect lonc client processes.
6205:
6206: =back
6207:
6208: =head2 Resource Access Logging
6209:
6210: =over 4
6211:
6212: =item *
6213:
6214: flushcourselogs() : flush (save) buffer logs and access logs
6215:
6216: =item *
6217:
6218: courselog($what) : save message for course in hash
6219:
6220: =item *
6221:
6222: courseacclog($what) : save message for course using &courselog(). Perform
6223: special processing for specific resource types (problems, exams, quizzes, etc).
6224:
1.191 harris41 6225: =item *
6226:
6227: goodbye() : flush course logs and log shutting down; it is called in srm.conf
6228: as a PerlChildExitHandler
1.243 albertel 6229:
6230: =back
6231:
6232: =head2 Other
6233:
6234: =over 4
6235:
6236: =item *
6237:
6238: symblist($mapname,%newhash) : update symbolic storage links
1.191 harris41 6239:
6240: =back
6241:
6242: =cut
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