Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.606
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
1.606 ! matthew 4: # $Id: lonnet.pm,v 1.605 2005/03/03 23:21:54 matthew 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
1.599 albertel 38: qw(%perlvar %hostname %badServerCache %iphost %spareid %hostdom
39: %libserv %pr %prp $memcache %packagetab
1.349 www 40: %courselogs %accesshash %userrolehash $processmarker $dumpcount
1.599 albertel 41: %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseownerbuf
42: %domaindescription %domain_auth_def %domain_auth_arg_def
1.564 albertel 43: %domain_lang_def %domain_city %domain_longi %domain_lati $tmpdir $_64bit);
1.403 www 44:
1.1 albertel 45: use IO::Socket;
1.31 www 46: use GDBM_File;
1.8 www 47: use Apache::Constants qw(:common :http);
1.208 albertel 48: use HTML::LCParser;
1.88 www 49: use Fcntl qw(:flock);
1.414 www 50: use Apache::lonlocal;
1.557 albertel 51: use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw nfreeze);
1.539 albertel 52: use Time::HiRes qw( gettimeofday tv_interval );
1.599 albertel 53: use Cache::Memcached;
1.195 www 54: my $readit;
1.550 foxr 55: my $max_connection_retries = 10; # Or some such value.
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";
1.549 foxr 120: #
121: # With loncnew process trimming, there's a timing hole between lonc server
122: # process exit and the master server picking up the listen on the AF_UNIX
123: # socket. In that time interval, a lock file will exist:
124:
125: my $lockfile=$peerfile.".lock";
126: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
127: sleep(1);
128: }
129: # At this point, either a loncnew parent is listening or an old lonc
1.550 foxr 130: # or loncnew child is listening so we can connect or everything's dead.
1.549 foxr 131: #
1.550 foxr 132: # We'll give the connection a few tries before abandoning it. If
133: # connection is not possible, we'll con_lost back to the client.
134: #
135: my $client;
136: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
137: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
138: Type => SOCK_STREAM,
139: Timeout => 10);
140: if($client) {
141: last; # Connected!
142: }
143: sleep(1); # Try again later if failed connection.
144: }
145: my $answer;
146: if ($client) {
147: print $client "$cmd\n";
148: $answer=<$client>;
149: if (!$answer) { $answer="con_lost"; }
150: chomp($answer);
151: } else {
152: $answer = 'con_lost'; # Failed connection.
153: }
1.1 albertel 154: return $answer;
155: }
156:
157: sub reply {
158: my ($cmd,$server)=@_;
1.205 www 159: unless (defined($hostname{$server})) { return 'no_such_host'; }
1.1 albertel 160: my $answer=subreply($cmd,$server);
1.65 www 161: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.12 www 162: &logthis("<font color=blue>WARNING:".
163: " $cmd to $server returned $answer</font>");
164: }
1.1 albertel 165: return $answer;
166: }
167:
168: # ----------------------------------------------------------- Send USR1 to lonc
169:
170: sub reconlonc {
171: my $peerfile=shift;
172: &logthis("Trying to reconnect for $peerfile");
173: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
1.448 albertel 174: if (open(my $fh,"<$loncfile")) {
1.1 albertel 175: my $loncpid=<$fh>;
176: chomp($loncpid);
177: if (kill 0 => $loncpid) {
178: &logthis("lonc at pid $loncpid responding, sending USR1");
179: kill USR1 => $loncpid;
180: sleep 1;
181: if (-e "$peerfile") { return; }
182: &logthis("$peerfile still not there, give it another try");
183: sleep 5;
184: if (-e "$peerfile") { return; }
1.12 www 185: &logthis(
186: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 187: } else {
1.12 www 188: &logthis(
189: "<font color=blue>WARNING:".
190: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 191: }
192: } else {
1.12 www 193: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 194: }
195: }
196:
197: # ------------------------------------------------------ Critical communication
1.12 www 198:
1.1 albertel 199: sub critical {
200: my ($cmd,$server)=@_;
1.89 www 201: unless ($hostname{$server}) {
202: &logthis("<font color=blue>WARNING:".
203: " Critical message to unknown server ($server)</font>");
204: return 'no_such_host';
205: }
1.1 albertel 206: my $answer=reply($cmd,$server);
207: if ($answer eq 'con_lost') {
208: &reconlonc("$perlvar{'lonSockDir'}/$server");
1.589 albertel 209: my $answer=reply($cmd,$server);
1.1 albertel 210: if ($answer eq 'con_lost') {
211: my $now=time;
212: my $middlename=$cmd;
1.5 www 213: $middlename=substr($middlename,0,16);
1.1 albertel 214: $middlename=~s/\W//g;
215: my $dfilename=
1.305 www 216: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
217: $dumpcount++;
1.1 albertel 218: {
1.448 albertel 219: my $dfh;
220: if (open($dfh,">$dfilename")) {
221: print $dfh "$cmd\n";
222: close($dfh);
223: }
1.1 albertel 224: }
225: sleep 2;
226: my $wcmd='';
227: {
1.448 albertel 228: my $dfh;
229: if (open($dfh,"<$dfilename")) {
230: $wcmd=<$dfh>;
231: close($dfh);
232: }
1.1 albertel 233: }
234: chomp($wcmd);
1.7 www 235: if ($wcmd eq $cmd) {
1.12 www 236: &logthis("<font color=blue>WARNING: ".
237: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 238: &logperm("D:$server:$cmd");
239: return 'con_delayed';
240: } else {
1.12 www 241: &logthis("<font color=red>CRITICAL:"
242: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 243: &logperm("F:$server:$cmd");
244: return 'con_failed';
245: }
246: }
247: }
248: return $answer;
1.405 albertel 249: }
250:
1.412 www 251: #
1.405 albertel 252: # -------------- Remove all key from the env that start witha lowercase letter
1.412 www 253: # (Which is always a lon-capa value)
254:
1.405 albertel 255: sub cleanenv {
1.412 www 256: # unless (defined(&Apache::exists_config_define("MODPERL2"))) { return; }
257: # unless (&Apache::exists_config_define("MODPERL2")) { return; }
1.405 albertel 258: foreach my $key (keys(%ENV)) {
259: if ($key =~ /^[a-z]/) {
260: delete($ENV{$key});
261: }
262: }
1.374 www 263: }
264:
265: # ------------------------------------------- Transfer profile into environment
266:
267: sub transfer_profile_to_env {
268: my ($lonidsdir,$handle)=@_;
269: my @profile;
270: {
1.448 albertel 271: open(my $idf,"$lonidsdir/$handle.id");
1.374 www 272: flock($idf,LOCK_SH);
273: @profile=<$idf>;
1.448 albertel 274: close($idf);
1.374 www 275: }
276: my $envi;
1.433 matthew 277: my %Remove;
1.374 www 278: for ($envi=0;$envi<=$#profile;$envi++) {
279: chomp($profile[$envi]);
280: my ($envname,$envvalue)=split(/=/,$profile[$envi]);
281: $ENV{$envname} = $envvalue;
1.433 matthew 282: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
283: if ($time < time-300) {
284: $Remove{$key}++;
285: }
286: }
287: }
1.446 albertel 288: $ENV{'user.environment'} = "$lonidsdir/$handle.id";
1.433 matthew 289: foreach my $expired_key (keys(%Remove)) {
290: &delenv($expired_key);
1.374 www 291: }
1.1 albertel 292: }
293:
1.5 www 294: # ---------------------------------------------------------- Append Environment
295:
296: sub appenv {
1.6 www 297: my %newenv=@_;
1.191 harris41 298: foreach (keys %newenv) {
1.35 www 299: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
300: &logthis("<font color=blue>WARNING: ".
1.151 www 301: "Attempt to modify environment ".$_." to ".$newenv{$_}
302: .'</font>');
1.35 www 303: delete($newenv{$_});
304: } else {
305: $ENV{$_}=$newenv{$_};
306: }
1.191 harris41 307: }
1.95 www 308:
309: my $lockfh;
1.448 albertel 310: unless (open($lockfh,"$ENV{'user.environment'}")) {
311: return 'error: '.$!;
1.95 www 312: }
313: unless (flock($lockfh,LOCK_EX)) {
314: &logthis("<font color=blue>WARNING: ".
315: 'Could not obtain exclusive lock in appenv: '.$!);
1.448 albertel 316: close($lockfh);
1.95 www 317: return 'error: '.$!;
318: }
319:
1.6 www 320: my @oldenv;
321: {
1.448 albertel 322: my $fh;
323: unless (open($fh,"$ENV{'user.environment'}")) {
324: return 'error: '.$!;
325: }
326: @oldenv=<$fh>;
327: close($fh);
1.6 www 328: }
329: for (my $i=0; $i<=$#oldenv; $i++) {
330: chomp($oldenv[$i]);
1.9 www 331: if ($oldenv[$i] ne '') {
1.448 albertel 332: my ($name,$value)=split(/=/,$oldenv[$i]);
333: unless (defined($newenv{$name})) {
334: $newenv{$name}=$value;
335: }
1.9 www 336: }
1.6 www 337: }
338: {
1.448 albertel 339: my $fh;
340: unless (open($fh,">$ENV{'user.environment'}")) {
341: return 'error';
342: }
343: my $newname;
344: foreach $newname (keys %newenv) {
345: print $fh "$newname=$newenv{$newname}\n";
346: }
347: close($fh);
1.56 www 348: }
1.448 albertel 349:
350: close($lockfh);
1.56 www 351: return 'ok';
352: }
353: # ----------------------------------------------------- Delete from Environment
354:
355: sub delenv {
356: my $delthis=shift;
357: my %newenv=();
358: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
359: &logthis("<font color=blue>WARNING: ".
360: "Attempt to delete from environment ".$delthis);
361: return 'error';
362: }
363: my @oldenv;
364: {
1.448 albertel 365: my $fh;
366: unless (open($fh,"$ENV{'user.environment'}")) {
367: return 'error';
368: }
369: unless (flock($fh,LOCK_SH)) {
370: &logthis("<font color=blue>WARNING: ".
371: 'Could not obtain shared lock in delenv: '.$!);
372: close($fh);
373: return 'error: '.$!;
374: }
375: @oldenv=<$fh>;
376: close($fh);
1.56 www 377: }
378: {
1.448 albertel 379: my $fh;
380: unless (open($fh,">$ENV{'user.environment'}")) {
381: return 'error';
382: }
383: unless (flock($fh,LOCK_EX)) {
384: &logthis("<font color=blue>WARNING: ".
385: 'Could not obtain exclusive lock in delenv: '.$!);
386: close($fh);
387: return 'error: '.$!;
388: }
389: foreach (@oldenv) {
1.473 matthew 390: if ($_=~/^$delthis/) {
391: my ($key,undef) = split('=',$_);
392: delete($ENV{$key});
393: } else {
394: print $fh $_;
395: }
1.448 albertel 396: }
397: close($fh);
1.5 www 398: }
399: return 'ok';
1.369 albertel 400: }
401:
402: # ------------------------------------------ Find out current server userload
403: # there is a copy in lond
404: sub userload {
405: my $numusers=0;
406: {
407: opendir(LONIDS,$perlvar{'lonIDsDir'});
408: my $filename;
409: my $curtime=time;
410: while ($filename=readdir(LONIDS)) {
411: if ($filename eq '.' || $filename eq '..') {next;}
1.404 albertel 412: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
1.437 albertel 413: if ($curtime-$mtime < 1800) { $numusers++; }
1.369 albertel 414: }
415: closedir(LONIDS);
416: }
417: my $userloadpercent=0;
418: my $maxuserload=$perlvar{'lonUserLoadLim'};
419: if ($maxuserload) {
1.371 albertel 420: $userloadpercent=100*$numusers/$maxuserload;
1.369 albertel 421: }
1.372 albertel 422: $userloadpercent=sprintf("%.2f",$userloadpercent);
1.369 albertel 423: return $userloadpercent;
1.283 www 424: }
425:
426: # ------------------------------------------ Fight off request when overloaded
427:
428: sub overloaderror {
429: my ($r,$checkserver)=@_;
430: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
431: my $loadavg;
432: if ($checkserver eq $perlvar{'lonHostID'}) {
1.448 albertel 433: open(my $loadfile,'/proc/loadavg');
1.283 www 434: $loadavg=<$loadfile>;
435: $loadavg =~ s/\s.*//g;
1.285 matthew 436: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
1.448 albertel 437: close($loadfile);
1.283 www 438: } else {
439: $loadavg=&reply('load',$checkserver);
440: }
1.285 matthew 441: my $overload=$loadavg-100;
1.283 www 442: if ($overload>0) {
1.285 matthew 443: $r->err_headers_out->{'Retry-After'}=$overload;
1.283 www 444: $r->log_error('Overload of '.$overload.' on '.$checkserver);
1.554 www 445: return 413;
1.283 www 446: }
447: return '';
1.5 www 448: }
1.1 albertel 449:
450: # ------------------------------ Find server with least workload from spare.tab
1.11 www 451:
1.1 albertel 452: sub spareserver {
1.370 albertel 453: my ($loadpercent,$userloadpercent) = @_;
1.1 albertel 454: my $tryserver;
455: my $spareserver='';
1.370 albertel 456: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
457: my $lowestserver=$loadpercent > $userloadpercent?
458: $loadpercent : $userloadpercent;
1.1 albertel 459: foreach $tryserver (keys %spareid) {
1.411 albertel 460: my $loadans=reply('load',$tryserver);
461: my $userloadans=reply('userload',$tryserver);
462: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
463: next; #didn't get a number from the server
464: }
465: my $answer;
466: if ($loadans =~ /\d/) {
467: if ($userloadans =~ /\d/) {
468: #both are numbers, pick the bigger one
469: $answer=$loadans > $userloadans?
470: $loadans : $userloadans;
471: } else {
472: $answer = $loadans;
473: }
474: } else {
475: $answer = $userloadans;
476: }
477: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
478: $spareserver="http://$hostname{$tryserver}";
479: $lowestserver=$answer;
480: }
1.370 albertel 481: }
1.1 albertel 482: return $spareserver;
1.202 matthew 483: }
484:
485: # --------------------------------------------- Try to change a user's password
486:
487: sub changepass {
488: my ($uname,$udom,$currentpass,$newpass,$server)=@_;
489: $currentpass = &escape($currentpass);
490: $newpass = &escape($newpass);
491: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass",
492: $server);
493: if (! $answer) {
494: &logthis("No reply on password change request to $server ".
495: "by $uname in domain $udom.");
496: } elsif ($answer =~ "^ok") {
497: &logthis("$uname in $udom successfully changed their password ".
498: "on $server.");
499: } elsif ($answer =~ "^pwchange_failure") {
500: &logthis("$uname in $udom was unable to change their password ".
501: "on $server. The action was blocked by either lcpasswd ".
502: "or pwchange");
503: } elsif ($answer =~ "^non_authorized") {
504: &logthis("$uname in $udom did not get their password correct when ".
505: "attempting to change it on $server.");
506: } elsif ($answer =~ "^auth_mode_error") {
507: &logthis("$uname in $udom attempted to change their password despite ".
508: "not being locally or internally authenticated on $server.");
509: } elsif ($answer =~ "^unknown_user") {
510: &logthis("$uname in $udom attempted to change their password ".
511: "on $server but were unable to because $server is not ".
512: "their home server.");
513: } elsif ($answer =~ "^refused") {
514: &logthis("$server refused to change $uname in $udom password because ".
515: "it was sent an unencrypted request to change the password.");
516: }
517: return $answer;
1.1 albertel 518: }
519:
1.169 harris41 520: # ----------------------- Try to determine user's current authentication scheme
521:
522: sub queryauthenticate {
523: my ($uname,$udom)=@_;
1.456 albertel 524: my $uhome=&homeserver($uname,$udom);
525: if (!$uhome) {
526: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
527: return 'no_host';
528: }
529: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
530: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
531: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.169 harris41 532: }
1.456 albertel 533: return $answer;
1.169 harris41 534: }
535:
1.1 albertel 536: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 537:
1.1 albertel 538: sub authenticate {
539: my ($uname,$upass,$udom)=@_;
1.12 www 540: $upass=escape($upass);
1.199 www 541: $uname=~s/\W//g;
1.471 albertel 542: my $uhome=&homeserver($uname,$udom);
543: if (!$uhome) {
544: &logthis("User $uname at $udom is unknown in authenticate");
545: return 'no_host';
1.1 albertel 546: }
1.471 albertel 547: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
548: if ($answer eq 'authorized') {
549: &logthis("User $uname at $udom authorized by $uhome");
550: return $uhome;
551: }
552: if ($answer eq 'non_authorized') {
553: &logthis("User $uname at $udom rejected by $uhome");
554: return 'no_host';
1.9 www 555: }
1.471 albertel 556: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.1 albertel 557: return 'no_host';
558: }
559:
560: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 561:
1.599 albertel 562: my %homecache;
1.1 albertel 563: sub homeserver {
1.230 stredwic 564: my ($uname,$udom,$ignoreBadCache)=@_;
1.1 albertel 565: my $index="$uname:$udom";
1.426 albertel 566:
1.599 albertel 567: if (exists($homecache{$index})) { return $homecache{$index}; }
1.1 albertel 568: my $tryserver;
569: foreach $tryserver (keys %libserv) {
1.230 stredwic 570: next if ($ignoreBadCache ne 'true' &&
1.231 stredwic 571: exists($badServerCache{$tryserver}));
1.1 albertel 572: if ($hostdom{$tryserver} eq $udom) {
573: my $answer=reply("home:$udom:$uname",$tryserver);
574: if ($answer eq 'found') {
1.599 albertel 575: return $homecache{$index}=$tryserver;
1.231 stredwic 576: } elsif ($answer eq 'no_host') {
577: $badServerCache{$tryserver}=1;
1.221 matthew 578: }
1.1 albertel 579: }
580: }
581: return 'no_host';
1.70 www 582: }
583:
584: # ------------------------------------- Find the usernames behind a list of IDs
585:
586: sub idget {
587: my ($udom,@ids)=@_;
588: my %returnhash=();
589:
590: my $tryserver;
591: foreach $tryserver (keys %libserv) {
592: if ($hostdom{$tryserver} eq $udom) {
593: my $idlist=join('&',@ids);
594: $idlist=~tr/A-Z/a-z/;
595: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
596: my @answer=();
1.76 www 597: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 598: @answer=split(/\&/,$reply);
599: } ;
600: my $i;
601: for ($i=0;$i<=$#ids;$i++) {
602: if ($answer[$i]) {
603: $returnhash{$ids[$i]}=$answer[$i];
604: }
605: }
606: }
607: }
608: return %returnhash;
609: }
610:
611: # ------------------------------------- Find the IDs behind a list of usernames
612:
613: sub idrget {
614: my ($udom,@unames)=@_;
615: my %returnhash=();
1.191 harris41 616: foreach (@unames) {
1.70 www 617: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
1.191 harris41 618: }
1.70 www 619: return %returnhash;
620: }
621:
622: # ------------------------------- Store away a list of names and associated IDs
623:
624: sub idput {
625: my ($udom,%ids)=@_;
626: my %servers=();
1.191 harris41 627: foreach (keys %ids) {
1.487 albertel 628: &cput('environment',{'id'=>$ids{$_}},$udom,$_);
1.70 www 629: my $uhom=&homeserver($_,$udom);
630: if ($uhom ne 'no_host') {
631: my $id=&escape($ids{$_});
632: $id=~tr/A-Z/a-z/;
633: my $unam=&escape($_);
634: if ($servers{$uhom}) {
635: $servers{$uhom}.='&'.$id.'='.$unam;
636: } else {
637: $servers{$uhom}=$id.'='.$unam;
638: }
639: }
1.191 harris41 640: }
641: foreach (keys %servers) {
1.70 www 642: &critical('idput:'.$udom.':'.$servers{$_},$_);
1.191 harris41 643: }
1.344 www 644: }
645:
646: # --------------------------------------------------- Assign a key to a student
647:
648: sub assign_access_key {
1.364 www 649: #
650: # a valid key looks like uname:udom#comments
651: # comments are being appended
652: #
1.498 www 653: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
654: $kdom=
655: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($kdom));
656: $knum=
657: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($knum));
1.344 www 658: $cdom=
659: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
660: $cnum=
661: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
662: $udom=$ENV{'user.name'} unless (defined($udom));
663: $uname=$ENV{'user.domain'} unless (defined($uname));
1.498 www 664: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1.364 www 665: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1.479 albertel 666: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1.364 www 667: # assigned to this person
668: # - this should not happen,
1.345 www 669: # unless something went wrong
670: # the first time around
671: # ready to assign
1.364 www 672: $logentry=$1.'; '.$logentry;
1.496 www 673: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1.498 www 674: $kdom,$knum) eq 'ok') {
1.345 www 675: # key now belongs to user
1.346 www 676: my $envkey='key.'.$cdom.'_'.$cnum;
1.345 www 677: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
678: &appenv('environment.'.$envkey => $ckey);
679: return 'ok';
680: } else {
681: return
682: 'error: Count not permanently assign key, will need to be re-entered later.';
683: }
684: } else {
685: return 'error: Could not assign key, try again later.';
686: }
1.364 www 687: } elsif (!$existing{$ckey}) {
1.345 www 688: # the key does not exist
689: return 'error: The key does not exist';
690: } else {
691: # the key is somebody else's
692: return 'error: The key is already in use';
693: }
1.344 www 694: }
695:
1.364 www 696: # ------------------------------------------ put an additional comment on a key
697:
698: sub comment_access_key {
699: #
700: # a valid key looks like uname:udom#comments
701: # comments are being appended
702: #
703: my ($ckey,$cdom,$cnum,$logentry)=@_;
704: $cdom=
705: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
706: $cnum=
707: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
708: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
709: if ($existing{$ckey}) {
710: $existing{$ckey}.='; '.$logentry;
711: # ready to assign
1.367 www 712: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1.364 www 713: $cdom,$cnum) eq 'ok') {
714: return 'ok';
715: } else {
716: return 'error: Count not store comment.';
717: }
718: } else {
719: # the key does not exist
720: return 'error: The key does not exist';
721: }
722: }
723:
1.344 www 724: # ------------------------------------------------------ Generate a set of keys
725:
726: sub generate_access_keys {
1.364 www 727: my ($number,$cdom,$cnum,$logentry)=@_;
1.344 www 728: $cdom=
729: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
730: $cnum=
731: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
1.361 www 732: unless (&allowed('mky',$cdom)) { return 0; }
1.344 www 733: unless (($cdom) && ($cnum)) { return 0; }
734: if ($number>10000) { return 0; }
735: sleep(2); # make sure don't get same seed twice
736: srand(time()^($$+($$<<15))); # from "Programming Perl"
737: my $total=0;
738: for (my $i=1;$i<=$number;$i++) {
739: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
740: sprintf("%lx",int(100000*rand)).'-'.
741: sprintf("%lx",int(100000*rand));
742: $newkey=~s/1/g/g; # folks mix up 1 and l
743: $newkey=~s/0/h/g; # and also 0 and O
744: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
745: if ($existing{$newkey}) {
746: $i--;
747: } else {
1.364 www 748: if (&put('accesskeys',
749: { $newkey => '# generated '.localtime().
750: ' by '.$ENV{'user.name'}.'@'.$ENV{'user.domain'}.
751: '; '.$logentry },
752: $cdom,$cnum) eq 'ok') {
1.344 www 753: $total++;
754: }
755: }
756: }
757: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
758: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
759: return $total;
760: }
761:
762: # ------------------------------------------------------- Validate an accesskey
763:
764: sub validate_access_key {
765: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
766: $cdom=
767: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
768: $cnum=
769: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
1.497 www 770: $udom=$ENV{'user.domain'} unless (defined($udom));
771: $uname=$ENV{'user.name'} unless (defined($uname));
1.345 www 772: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1.479 albertel 773: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1.70 www 774: }
775:
776: # ------------------------------------- Find the section of student in a course
1.298 matthew 777:
778: sub getsection {
779: my ($udom,$unam,$courseid)=@_;
1.599 albertel 780: my $cachetime=1800;
1.298 matthew 781: $courseid=~s/\_/\//g;
782: $courseid=~s/^(\w)/\/$1/;
1.551 albertel 783:
784: my $hashid="$udom:$unam:$courseid";
1.599 albertel 785: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1.551 albertel 786: if (defined($cached)) { return $result; }
787:
1.298 matthew 788: my %Pending;
789: my %Expired;
790: #
791: # Each role can either have not started yet (pending), be active,
792: # or have expired.
793: #
794: # If there is an active role, we are done.
795: #
796: # If there is more than one role which has not started yet,
797: # choose the one which will start sooner
798: # If there is one role which has not started yet, return it.
799: #
800: # If there is more than one expired role, choose the one which ended last.
801: # If there is a role which has expired, return it.
802: #
803: foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
804: &homeserver($unam,$udom)))) {
805: my ($key,$value)=split(/\=/,$_);
806: $key=&unescape($key);
1.479 albertel 807: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1.298 matthew 808: my $section=$1;
809: if ($key eq $courseid.'_st') { $section=''; }
810: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
811: my $now=time;
1.548 albertel 812: if (defined($end) && $end && ($now > $end)) {
1.298 matthew 813: $Expired{$end}=$section;
814: next;
815: }
1.548 albertel 816: if (defined($start) && $start && ($now < $start)) {
1.298 matthew 817: $Pending{$start}=$section;
818: next;
819: }
1.599 albertel 820: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1.298 matthew 821: }
822: #
823: # Presumedly there will be few matching roles from the above
824: # loop and the sorting time will be negligible.
825: if (scalar(keys(%Pending))) {
826: my ($time) = sort {$a <=> $b} keys(%Pending);
1.599 albertel 827: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1.298 matthew 828: }
829: if (scalar(keys(%Expired))) {
830: my @sorted = sort {$a <=> $b} keys(%Expired);
831: my $time = pop(@sorted);
1.599 albertel 832: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1.298 matthew 833: }
1.599 albertel 834: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1.298 matthew 835: }
1.70 www 836:
1.599 albertel 837: sub save_cache {
838: &purge_remembered();
839: }
1.452 albertel 840:
1.599 albertel 841: my $to_remember=-1;
842: my %remembered;
843: my %accessed;
844: my $kicks=0;
845: my $hits=0;
846: sub devalidate_cache_new {
847: my ($name,$id,$debug) = @_;
848: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
849: $id=&escape($name.':'.$id);
850: $memcache->delete($id);
851: delete($remembered{$id});
852: delete($accessed{$id});
853: }
854:
855: sub is_cached_new {
856: my ($name,$id,$debug) = @_;
857: $id=&escape($name.':'.$id);
858: if (exists($remembered{$id})) {
859: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
860: $accessed{$id}=[&gettimeofday()];
861: $hits++;
862: return ($remembered{$id},1);
863: }
864: my $value = $memcache->get($id);
865: if (!(defined($value))) {
866: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1.417 albertel 867: return (undef,undef);
1.416 albertel 868: }
1.599 albertel 869: if ($value eq '__undef__') {
870: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
871: $value=undef;
872: }
873: &make_room($id,$value,$debug);
874: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
875: return ($value,1);
876: }
877:
878: sub do_cache_new {
879: my ($name,$id,$value,$time,$debug) = @_;
880: $id=&escape($name.':'.$id);
881: my $setvalue=$value;
882: if (!defined($setvalue)) {
883: $setvalue='__undef__';
884: }
885: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1.600 albertel 886: $memcache->set($id,$setvalue,$time);
887: # need to make a copy of $value
888: #&make_room($id,$value,$debug);
1.599 albertel 889: return $value;
890: }
891:
892: sub make_room {
893: my ($id,$value,$debug)=@_;
894: $remembered{$id}=$value;
895: if ($to_remember<0) { return; }
896: $accessed{$id}=[&gettimeofday()];
897: if (scalar(keys(%remembered)) <= $to_remember) { return; }
898: my $to_kick;
899: my $max_time=0;
900: foreach my $other (keys(%accessed)) {
901: if (&tv_interval($accessed{$other}) > $max_time) {
902: $to_kick=$other;
903: $max_time=&tv_interval($accessed{$other});
904: }
905: }
906: delete($remembered{$to_kick});
907: delete($accessed{$to_kick});
908: $kicks++;
909: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1.541 albertel 910: return;
911: }
912:
1.599 albertel 913: sub purge_remembered {
1.604 albertel 914: #&logthis("Tossing ".scalar(keys(%remembered)));
915: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1.599 albertel 916: undef(%remembered);
917: undef(%accessed);
1.428 albertel 918: }
1.70 www 919: # ------------------------------------- Read an entry from a user's environment
920:
921: sub userenvironment {
922: my ($udom,$unam,@what)=@_;
923: my %returnhash=();
924: my @answer=split(/\&/,
925: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
926: &homeserver($unam,$udom)));
927: my $i;
928: for ($i=0;$i<=$#what;$i++) {
929: $returnhash{$what[$i]}=&unescape($answer[$i]);
930: }
931: return %returnhash;
1.1 albertel 932: }
933:
1.263 www 934: # -------------------------------------------------------------------- New chat
935:
936: sub chatsend {
937: my ($newentry,$anon)=@_;
938: my $cnum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
939: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
940: my $chome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
941: &reply('chatsend:'.$cdom.':'.$cnum.':'.
942: &escape($ENV{'user.domain'}.':'.$ENV{'user.name'}.':'.$anon.':'.
943: &escape($newentry)),$chome);
1.292 www 944: }
945:
946: # ------------------------------------------ Find current version of a resource
947:
948: sub getversion {
949: my $fname=&clutter(shift);
950: unless ($fname=~/^\/res\//) { return -1; }
951: return ¤tversion(&filelocation('',$fname));
952: }
953:
954: sub currentversion {
955: my $fname=shift;
1.599 albertel 956: my ($result,$cached)=&is_cached_new('resversion',$fname);
1.440 www 957: if (defined($cached)) { return $result; }
1.292 www 958: my $author=$fname;
959: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
960: my ($udom,$uname)=split(/\//,$author);
961: my $home=homeserver($uname,$udom);
962: if ($home eq 'no_host') {
963: return -1;
964: }
965: my $answer=reply("currentversion:$fname",$home);
966: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
967: return -1;
968: }
1.599 albertel 969: return &do_cache_new('resversion',$fname,$answer,600);
1.263 www 970: }
971:
1.1 albertel 972: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 973:
1.1 albertel 974: sub subscribe {
975: my $fname=shift;
1.312 www 976: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1.532 albertel 977: $fname=~s/[\n\r]//g;
1.1 albertel 978: my $author=$fname;
979: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
980: my ($udom,$uname)=split(/\//,$author);
981: my $home=homeserver($uname,$udom);
1.335 albertel 982: if ($home eq 'no_host') {
983: return 'not_found';
1.1 albertel 984: }
985: my $answer=reply("sub:$fname",$home);
1.64 www 986: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
987: $answer.=' by '.$home;
988: }
1.1 albertel 989: return $answer;
990: }
991:
1.8 www 992: # -------------------------------------------------------------- Replicate file
993:
994: sub repcopy {
995: my $filename=shift;
1.23 www 996: $filename=~s/\/+/\//g;
1.602 raeburn 997: if ($filename=~m|^/home/httpd/html/adm/|) { return 'OK'; }
998: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'OK'; }
1.538 albertel 999: if ($filename=~m|^/home/httpd/html/userfiles/| or
1000: $filename=~m|^/*uploaded/|) {
1001: return &repcopy_userfile($filename);
1002: }
1.532 albertel 1003: $filename=~s/[\n\r]//g;
1.8 www 1004: my $transname="$filename.in.transfer";
1.602 raeburn 1005: if ((-e $filename) || (-e $transname)) { return 'OK'; }
1.8 www 1006: my $remoteurl=subscribe($filename);
1.64 www 1007: if ($remoteurl =~ /^con_lost by/) {
1008: &logthis("Subscribe returned $remoteurl: $filename");
1.602 raeburn 1009: return 'HTTP_SERVICE_UNAVAILABLE';
1.8 www 1010: } elsif ($remoteurl eq 'not_found') {
1.441 albertel 1011: #&logthis("Subscribe returned not_found: $filename");
1.602 raeburn 1012: return 'HTTP_NOT_FOUND';
1.64 www 1013: } elsif ($remoteurl =~ /^rejected by/) {
1014: &logthis("Subscribe returned $remoteurl: $filename");
1.602 raeburn 1015: return 'FORBIDDEN';
1.20 www 1016: } elsif ($remoteurl eq 'directory') {
1.602 raeburn 1017: return 'OK';
1.8 www 1018: } else {
1.290 www 1019: my $author=$filename;
1020: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1021: my ($udom,$uname)=split(/\//,$author);
1022: my $home=homeserver($uname,$udom);
1023: unless ($home eq $perlvar{'lonHostID'}) {
1.8 www 1024: my @parts=split(/\//,$filename);
1025: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1026: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1027: &logthis("Malconfiguration for replication: $filename");
1.602 raeburn 1028: return 'HTTP_BAD_REQUEST';
1.8 www 1029: }
1030: my $count;
1031: for ($count=5;$count<$#parts;$count++) {
1032: $path.="/$parts[$count]";
1033: if ((-e $path)!=1) {
1034: mkdir($path,0777);
1035: }
1036: }
1037: my $ua=new LWP::UserAgent;
1038: my $request=new HTTP::Request('GET',"$remoteurl");
1039: my $response=$ua->request($request,$transname);
1040: if ($response->is_error()) {
1041: unlink($transname);
1042: my $message=$response->status_line;
1.12 www 1043: &logthis("<font color=blue>WARNING:"
1044: ." LWP get: $message: $filename</font>");
1.602 raeburn 1045: return 'HTTP_SERVICE_UNAVAILABLE';
1.8 www 1046: } else {
1.16 www 1047: if ($remoteurl!~/\.meta$/) {
1048: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1049: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1050: if ($mresponse->is_error()) {
1051: unlink($filename.'.meta');
1052: &logthis(
1053: "<font color=yellow>INFO: No metadata: $filename</font>");
1054: }
1055: }
1.8 www 1056: rename($transname,$filename);
1.602 raeburn 1057: return 'OK';
1.8 www 1058: }
1.290 www 1059: }
1.8 www 1060: }
1.330 www 1061: }
1062:
1063: # ------------------------------------------------ Get server side include body
1064: sub ssi_body {
1.381 albertel 1065: my ($filelink,%form)=@_;
1.606 ! matthew 1066: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
! 1067: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
! 1068: }
1.330 www 1069: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1.381 albertel 1070: &ssi($filelink,%form));
1.565 albertel 1071: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+// END LON-CAPA Internal\s*(-->)?\s||gs;
1.451 albertel 1072: $output=~s/^.*?\<body[^\>]*\>//si;
1073: $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
1.330 www 1074: return $output;
1.8 www 1075: }
1076:
1.15 www 1077: # --------------------------------------------------------- Server Side Include
1078:
1079: sub ssi {
1080:
1.23 www 1081: my ($fn,%form)=@_;
1.15 www 1082:
1083: my $ua=new LWP::UserAgent;
1.23 www 1084:
1085: my $request;
1086:
1087: if (%form) {
1088: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
1.201 albertel 1089: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1.23 www 1090: } else {
1091: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
1092: }
1093:
1.15 www 1094: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1095: my $response=$ua->request($request);
1096:
1.324 www 1097: return $response->content;
1098: }
1099:
1100: sub externalssi {
1101: my ($url)=@_;
1102: my $ua=new LWP::UserAgent;
1103: my $request=new HTTP::Request('GET',$url);
1104: my $response=$ua->request($request);
1.15 www 1105: return $response->content;
1106: }
1.254 www 1107:
1.492 albertel 1108: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1109:
1110: sub allowuploaded {
1111: my ($srcurl,$url)=@_;
1112: $url=&clutter(&declutter($url));
1113: my $dir=$url;
1114: $dir=~s/\/[^\/]+$//;
1115: my %httpref=();
1116: my $httpurl=&hreflocation('',$url);
1117: $httpref{'httpref.'.$httpurl}=$srcurl;
1118: &Apache::lonnet::appenv(%httpref);
1.254 www 1119: }
1.477 raeburn 1120:
1.478 albertel 1121: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1122: # input: action, courseID, current domain, home server for course, intended
1123: # path to file, source of file.
1.485 raeburn 1124: # output: url to file (if action was uploaddoc),
1125: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1.477 raeburn 1126: #
1.478 albertel 1127: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1128: # course.
1.477 raeburn 1129: #
1.478 albertel 1130: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1131: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1132: # course's home server.
1.477 raeburn 1133: #
1.478 albertel 1134: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1135: # be copied from $source (current location) to
1136: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1137: # and will then be copied to
1138: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1139: # course's home server.
1.485 raeburn 1140: #
1.481 raeburn 1141: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1.485 raeburn 1142: # will be retrived from $ENV{form.uploaddoc} (from DOCS interface) to
1.481 raeburn 1143: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1144: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1145: # in course's home server.
1146:
1.477 raeburn 1147:
1148: sub process_coursefile {
1149: my ($action,$docuname,$docudom,$docuhome,$file,$source)=@_;
1150: my $fetchresult;
1151: if ($action eq 'propagate') {
1152: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file
1153: ,$docuhome);
1.481 raeburn 1154: } else {
1.477 raeburn 1155: my $fetchresult = '';
1156: my $fpath = '';
1157: my $fname = $file;
1.478 albertel 1158: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1.477 raeburn 1159: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1160: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1161: unless ($fpath eq '') {
1.478 albertel 1162: my @parts=split('/',$fpath);
1.477 raeburn 1163: foreach my $part (@parts) {
1164: $filepath.= '/'.$part;
1165: if ((-e $filepath)!=1) {
1166: mkdir($filepath,0777);
1167: }
1168: }
1169: }
1.481 raeburn 1170: if ($action eq 'copy') {
1171: if ($source eq '') {
1172: $fetchresult = 'no source file';
1173: return $fetchresult;
1174: } else {
1175: my $destination = $filepath.'/'.$fname;
1176: rename($source,$destination);
1177: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1178: $docuhome);
1179: }
1180: } elsif ($action eq 'uploaddoc') {
1181: open(my $fh,'>'.$filepath.'/'.$fname);
1182: print $fh $ENV{'form.'.$source};
1183: close($fh);
1.477 raeburn 1184: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1185: $docuhome);
1.481 raeburn 1186: if ($fetchresult eq 'ok') {
1187: return '/uploaded/'.$fpath.'/'.$fname;
1188: } else {
1189: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1190: ' to host '.$docuhome.': '.$fetchresult);
1191: return '/adm/notfound.html';
1192: }
1.477 raeburn 1193: }
1194: }
1.485 raeburn 1195: unless ( $fetchresult eq 'ok') {
1.477 raeburn 1196: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1197: ' to host '.$docuhome.': '.$fetchresult);
1198: }
1199: return $fetchresult;
1200: }
1201:
1.257 www 1202: # --------------- Take an uploaded file and put it into the userfiles directory
1.259 www 1203: # input: name of form element, coursedoc=1 means this is for the course
1.257 www 1204: # output: url of file in userspace
1205:
1.531 albertel 1206: sub clean_filename {
1207: my ($fname)=@_;
1.315 www 1208: # Replace Windows backslashes by forward slashes
1.257 www 1209: $fname=~s/\\/\//g;
1.315 www 1210: # Get rid of everything but the actual filename
1.257 www 1211: $fname=~s/^.*\/([^\/]+)$/$1/;
1.315 www 1212: # Replace spaces by underscores
1213: $fname=~s/\s+/\_/g;
1214: # Replace all other weird characters by nothing
1.317 www 1215: $fname=~s/[^\w\.\-]//g;
1.540 albertel 1216: # Replace all .\d. sequences with _\d. so they no longer look like version
1217: # numbers
1218: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1.531 albertel 1219: return $fname;
1220: }
1221:
1222: sub userfileupload {
1223: my ($formname,$coursedoc,$subdir)=@_;
1224: if (!defined($subdir)) { $subdir='unknown'; }
1225: my $fname=$ENV{'form.'.$formname.'.filename'};
1226: $fname=&clean_filename($fname);
1.315 www 1227: # See if there is anything left
1.257 www 1228: unless ($fname) { return 'error: no uploaded file'; }
1.477 raeburn 1229: chop($ENV{'form.'.$formname});
1.523 raeburn 1230: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1231: my $now = time;
1232: my $filepath = 'tmp/helprequests/'.$now;
1233: my @parts=split(/\//,$filepath);
1234: my $fullpath = $perlvar{'lonDaemons'};
1235: for (my $i=0;$i<@parts;$i++) {
1236: $fullpath .= '/'.$parts[$i];
1237: if ((-e $fullpath)!=1) {
1238: mkdir($fullpath,0777);
1239: }
1240: }
1241: open(my $fh,'>'.$fullpath.'/'.$fname);
1242: print $fh $ENV{'form.'.$formname};
1243: close($fh);
1244: return $fullpath.'/'.$fname;
1245: }
1.258 www 1246: # Create the directory if not present
1.259 www 1247: my $docuname='';
1248: my $docudom='';
1249: my $docuhome='';
1.493 albertel 1250: $fname="$subdir/$fname";
1.259 www 1251: if ($coursedoc) {
1252: $docuname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1253: $docudom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1254: $docuhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.481 raeburn 1255: if ($ENV{'form.folder'} =~ m/^default/) {
1.485 raeburn 1256: return &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname);
1.481 raeburn 1257: } else {
1258: $fname=$ENV{'form.folder'}.'/'.$fname;
1.485 raeburn 1259: return &process_coursefile('uploaddoc',$docuname,$docudom,$docuhome,$fname,$formname);
1.481 raeburn 1260: }
1.259 www 1261: } else {
1262: $docuname=$ENV{'user.name'};
1263: $docudom=$ENV{'user.domain'};
1264: $docuhome=$ENV{'user.home'};
1.485 raeburn 1265: return &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname);
1.259 www 1266: }
1.271 www 1267: }
1268:
1269: sub finishuserfileupload {
1.477 raeburn 1270: my ($docuname,$docudom,$docuhome,$formname,$fname)=@_;
1271: my $path=$docudom.'/'.$docuname.'/';
1.258 www 1272: my $filepath=$perlvar{'lonDocRoot'};
1.494 albertel 1273: my ($fnamepath,$file);
1274: $file=$fname;
1275: if ($fname=~m|/|) {
1276: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1277: $path.=$fnamepath.'/';
1278: }
1.259 www 1279: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
1.258 www 1280: my $count;
1281: for ($count=4;$count<=$#parts;$count++) {
1282: $filepath.="/$parts[$count]";
1283: if ((-e $filepath)!=1) {
1284: mkdir($filepath,0777);
1285: }
1286: }
1287: # Save the file
1288: {
1.570 albertel 1289: open(FH,'>'.$filepath.'/'.$file);
1290: print FH $ENV{'form.'.$formname};
1291: close(FH);
1.258 www 1292: }
1.259 www 1293: # Notify homeserver to grep it
1294: #
1.577 banghart 1295: &Apache::lonnet::logthis("fetching ".$path.$file);
1.494 albertel 1296: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
1.295 www 1297: if ($fetchresult eq 'ok') {
1.259 www 1298: #
1.258 www 1299: # Return the URL to it
1.494 albertel 1300: return '/uploaded/'.$path.$file;
1.263 www 1301: } else {
1.494 albertel 1302: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
1303: ': '.$fetchresult);
1.263 www 1304: return '/adm/notfound.html';
1305: }
1.493 albertel 1306: }
1307:
1308: sub removeuploadedurl {
1309: my ($url)=@_;
1310: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
1311: return &Apache::lonnet::removeuserfile($uname,$udom,$fname);
1.490 albertel 1312: }
1313:
1314: sub removeuserfile {
1315: my ($docuname,$docudom,$fname)=@_;
1316: my $home=&homeserver($docuname,$docudom);
1317: return &reply("removeuserfile:$docudom/$docuname/$fname",$home);
1.257 www 1318: }
1.15 www 1319:
1.530 albertel 1320: sub mkdiruserfile {
1321: my ($docuname,$docudom,$dir)=@_;
1322: my $home=&homeserver($docuname,$docudom);
1323: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
1324: }
1325:
1.531 albertel 1326: sub renameuserfile {
1327: my ($docuname,$docudom,$old,$new)=@_;
1328: my $home=&homeserver($docuname,$docudom);
1329: return &reply("renameuserfile:$docudom:$docuname:".&escape("$old").':'.
1330: &escape("$new"),$home);
1331: }
1332:
1.14 www 1333: # ------------------------------------------------------------------------- Log
1334:
1335: sub log {
1336: my ($dom,$nam,$hom,$what)=@_;
1.47 www 1337: return critical("log:$dom:$nam:$what",$hom);
1.157 www 1338: }
1339:
1340: # ------------------------------------------------------------------ Course Log
1.352 www 1341: #
1342: # This routine flushes several buffers of non-mission-critical nature
1343: #
1.157 www 1344:
1345: sub flushcourselogs {
1.352 www 1346: &logthis('Flushing log buffers');
1347: #
1348: # course logs
1349: # This is a log of all transactions in a course, which can be used
1350: # for data mining purposes
1351: #
1352: # It also collects the courseid database, which lists last transaction
1353: # times and course titles for all courseids
1354: #
1355: my %courseidbuffer=();
1.191 harris41 1356: foreach (keys %courselogs) {
1.157 www 1357: my $crsid=$_;
1.352 www 1358: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
1.188 www 1359: &escape($courselogs{$crsid}),
1360: $coursehombuf{$crsid}) eq 'ok') {
1.157 www 1361: delete $courselogs{$crsid};
1362: } else {
1363: &logthis('Failed to flush log buffer for '.$crsid);
1364: if (length($courselogs{$crsid})>40000) {
1365: &logthis("<font color=blue>WARNING: Buffer for ".$crsid.
1366: " exceeded maximum size, deleting.</font>");
1367: delete $courselogs{$crsid};
1368: }
1.352 www 1369: }
1370: if ($courseidbuffer{$coursehombuf{$crsid}}) {
1371: $courseidbuffer{$coursehombuf{$crsid}}.='&'.
1.516 raeburn 1372: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1.571 raeburn 1373: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid});
1.352 www 1374: } else {
1375: $courseidbuffer{$coursehombuf{$crsid}}=
1.516 raeburn 1376: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1.571 raeburn 1377: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid});
1378: }
1.191 harris41 1379: }
1.352 www 1380: #
1381: # Write course id database (reverse lookup) to homeserver of courses
1382: # Is used in pickcourse
1383: #
1384: foreach (keys %courseidbuffer) {
1.353 www 1385: &courseidput($hostdom{$_},$courseidbuffer{$_},$_);
1.352 www 1386: }
1387: #
1388: # File accesses
1389: # Writes to the dynamic metadata of resources to get hit counts, etc.
1390: #
1.449 matthew 1391: foreach my $entry (keys(%accesshash)) {
1.458 matthew 1392: if ($entry =~ /___count$/) {
1393: my ($dom,$name);
1394: ($dom,$name,undef)=($entry=~m:___(\w+)/(\w+)/(.*)___count$:);
1395: if (! defined($dom) || $dom eq '' ||
1396: ! defined($name) || $name eq '') {
1397: my $cid = $ENV{'request.course.id'};
1398: $dom = $ENV{'request.'.$cid.'.domain'};
1399: $name = $ENV{'request.'.$cid.'.num'};
1400: }
1.450 matthew 1401: my $value = $accesshash{$entry};
1402: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
1403: my %temphash=($url => $value);
1.449 matthew 1404: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
1405: if ($result eq 'ok') {
1406: delete $accesshash{$entry};
1407: } elsif ($result eq 'unknown_cmd') {
1408: # Target server has old code running on it.
1.450 matthew 1409: my %temphash=($entry => $value);
1.449 matthew 1410: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1411: delete $accesshash{$entry};
1412: }
1413: }
1414: } else {
1.458 matthew 1415: my ($dom,$name) = ($entry=~m:___(\w+)/(\w+)/(.*)___(\w+)$:);
1.450 matthew 1416: my %temphash=($entry => $accesshash{$entry});
1.449 matthew 1417: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1418: delete $accesshash{$entry};
1419: }
1.185 www 1420: }
1.191 harris41 1421: }
1.352 www 1422: #
1423: # Roles
1424: # Reverse lookup of user roles for course faculty/staff and co-authorship
1425: #
1.349 www 1426: foreach (keys %userrolehash) {
1427: my $entry=$_;
1.351 www 1428: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
1.349 www 1429: split(/\:/,$entry);
1430: if (&Apache::lonnet::put('nohist_userroles',
1.351 www 1431: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
1.349 www 1432: $rudom,$runame) eq 'ok') {
1433: delete $userrolehash{$entry};
1434: }
1435: }
1.186 www 1436: $dumpcount++;
1.157 www 1437: }
1438:
1439: sub courselog {
1440: my $what=shift;
1.158 www 1441: $what=time.':'.$what;
1.157 www 1442: unless ($ENV{'request.course.id'}) { return ''; }
1.188 www 1443: $coursedombuf{$ENV{'request.course.id'}}=
1.352 www 1444: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1445: $coursenumbuf{$ENV{'request.course.id'}}=
1.188 www 1446: $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1447: $coursehombuf{$ENV{'request.course.id'}}=
1448: $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.352 www 1449: $coursedescrbuf{$ENV{'request.course.id'}}=
1450: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.516 raeburn 1451: $courseinstcodebuf{$ENV{'request.course.id'}}=
1452: $ENV{'course.'.$ENV{'request.course.id'}.'.internal.coursecode'};
1.571 raeburn 1453: $courseownerbuf{$ENV{'request.course.id'}}=
1454: $ENV{'course.'.$ENV{'request.course.id'}.'.internal.courseowner'};
1.157 www 1455: if (defined $courselogs{$ENV{'request.course.id'}}) {
1456: $courselogs{$ENV{'request.course.id'}}.='&'.$what;
1457: } else {
1458: $courselogs{$ENV{'request.course.id'}}.=$what;
1459: }
1.458 matthew 1460: if (length($courselogs{$ENV{'request.course.id'}})>4048) {
1.157 www 1461: &flushcourselogs();
1462: }
1.158 www 1463: }
1464:
1465: sub courseacclog {
1466: my $fnsymb=shift;
1467: unless ($ENV{'request.course.id'}) { return ''; }
1468: my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.408 www 1469: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|page)$/) {
1.187 www 1470: $what.=':POST';
1.583 matthew 1471: # FIXME: Probably ought to escape things....
1.191 harris41 1472: foreach (keys %ENV) {
1.158 www 1473: if ($_=~/^form\.(.*)/) {
1474: $what.=':'.$1.'='.$ENV{$_};
1475: }
1.191 harris41 1476: }
1.583 matthew 1477: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
1478: # FIXME: We should not be depending on a form parameter that someone
1479: # editing lonsearchcat.pm might change in the future.
1480: if ($ENV{'form.phase'} eq 'course_search') {
1481: $what.= ':POST';
1482: # FIXME: Probably ought to escape things....
1483: foreach my $element ('courseexp','crsfulltext','crsrelated',
1484: 'crsdiscuss') {
1485: $what.=':'.$element.'='.$ENV{'form.'.$element};
1486: }
1487: }
1.158 www 1488: }
1489: &courselog($what);
1.149 www 1490: }
1491:
1.185 www 1492: sub countacc {
1493: my $url=&declutter(shift);
1.458 matthew 1494: return if (! defined($url) || $url eq '');
1.185 www 1495: unless ($ENV{'request.course.id'}) { return ''; }
1496: $accesshash{$ENV{'request.course.id'}.'___'.$url.'___course'}=1;
1.281 www 1497: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
1.450 matthew 1498: $accesshash{$key}++;
1.185 www 1499: }
1.349 www 1500:
1.361 www 1501: sub linklog {
1502: my ($from,$to)=@_;
1503: $from=&declutter($from);
1504: $to=&declutter($to);
1505: $accesshash{$from.'___'.$to.'___comefrom'}=1;
1506: $accesshash{$to.'___'.$from.'___goto'}=1;
1507: }
1508:
1.349 www 1509: sub userrolelog {
1510: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
1511: if (($trole=~/^ca/) || ($trole=~/^in/) ||
1512: ($trole=~/^cc/) || ($trole=~/^ep/) ||
1.469 www 1513: ($trole=~/^cr/) || ($trole=~/^ta/)) {
1.350 www 1514: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
1515: $userrolehash
1516: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
1.349 www 1517: =$tend.':'.$tstart;
1518: }
1.351 www 1519: }
1520:
1521: sub get_course_adv_roles {
1522: my $cid=shift;
1523: $cid=$ENV{'request.course.id'} unless (defined($cid));
1524: my %coursehash=&coursedescription($cid);
1.470 www 1525: my %nothide=();
1526: foreach (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
1527: $nothide{join(':',split(/[\@\:]/,$_))}=1;
1528: }
1.351 www 1529: my %returnhash=();
1530: my %dumphash=
1531: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
1532: my $now=time;
1533: foreach (keys %dumphash) {
1534: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1535: if (($tstart) && ($tstart<0)) { next; }
1536: if (($tend) && ($tend<$now)) { next; }
1537: if (($tstart) && ($now<$tstart)) { next; }
1538: my ($role,$username,$domain,$section)=split(/\:/,$_);
1.576 albertel 1539: if ($username eq '' || $domain eq '') { next; }
1.470 www 1540: if ((&privileged($username,$domain)) &&
1541: (!$nothide{$username.':'.$domain})) { next; }
1.351 www 1542: my $key=&plaintext($role);
1543: if ($section) { $key.=' (Sec/Grp '.$section.')'; }
1544: if ($returnhash{$key}) {
1545: $returnhash{$key}.=','.$username.':'.$domain;
1546: } else {
1547: $returnhash{$key}=$username.':'.$domain;
1548: }
1.400 www 1549: }
1550: return %returnhash;
1551: }
1552:
1553: sub get_my_roles {
1554: my ($uname,$udom)=@_;
1555: unless (defined($uname)) { $uname=$ENV{'user.name'}; }
1556: unless (defined($udom)) { $udom=$ENV{'user.domain'}; }
1557: my %dumphash=
1558: &dump('nohist_userroles',$udom,$uname);
1559: my %returnhash=();
1560: my $now=time;
1561: foreach (keys %dumphash) {
1562: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1563: if (($tstart) && ($tstart<0)) { next; }
1564: if (($tend) && ($tend<$now)) { next; }
1565: if (($tstart) && ($now<$tstart)) { next; }
1566: my ($role,$username,$domain,$section)=split(/\:/,$_);
1567: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
1.373 www 1568: }
1569: return %returnhash;
1.399 www 1570: }
1571:
1572: # ----------------------------------------------------- Frontpage Announcements
1573: #
1574: #
1575:
1576: sub postannounce {
1577: my ($server,$text)=@_;
1578: unless (&allowed('psa',$hostdom{$server})) { return 'refused'; }
1579: unless ($text=~/\w/) { $text=''; }
1580: return &reply('setannounce:'.&escape($text),$server);
1581: }
1582:
1583: sub getannounce {
1.448 albertel 1584:
1585: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
1.399 www 1586: my $announcement='';
1587: while (<$fh>) { $announcement .=$_; }
1.448 albertel 1588: close($fh);
1.399 www 1589: if ($announcement=~/\w/) {
1590: return
1591: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
1.518 albertel 1592: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
1.399 www 1593: } else {
1594: return '';
1595: }
1596: } else {
1597: return '';
1598: }
1.351 www 1599: }
1.353 www 1600:
1601: # ---------------------------------------------------------- Course ID routines
1602: # Deal with domain's nohist_courseid.db files
1603: #
1604:
1605: sub courseidput {
1606: my ($domain,$what,$coursehome)=@_;
1607: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
1608: }
1609:
1610: sub courseiddump {
1.571 raeburn 1611: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$hostidflag,$hostidref)=@_;
1.353 www 1612: my %returnhash=();
1.355 www 1613: unless ($domfilter) { $domfilter=''; }
1.353 www 1614: foreach my $tryserver (keys %libserv) {
1.511 raeburn 1615: if ( ($hostidflag == 1 && grep/^$tryserver$/,@{$hostidref}) || (!defined($hostidflag)) ) {
1.506 raeburn 1616: if ((!$domfilter) || ($hostdom{$tryserver} eq $domfilter)) {
1617: foreach (
1618: split(/\&/,&reply('courseiddump:'.$hostdom{$tryserver}.':'.
1.571 raeburn 1619: $sincefilter.':'.&escape($descfilter).':'.
1620: &escape($instcodefilter).':'.&escape($ownerfilter),
1.354 www 1621: $tryserver))) {
1.506 raeburn 1622: my ($key,$value)=split(/\=/,$_);
1623: if (($key) && ($value)) {
1.516 raeburn 1624: $returnhash{&unescape($key)}=$value;
1.506 raeburn 1625: }
1.353 www 1626: }
1627: }
1628: }
1629: }
1630: return %returnhash;
1631: }
1632:
1633: #
1.149 www 1634: # ----------------------------------------------------------- Check out an item
1635:
1.504 albertel 1636: sub get_first_access {
1637: my ($type,$argsymb)=@_;
1638: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1639: if ($argsymb) { $symb=$argsymb; }
1640: my ($map,$id,$res)=&decode_symb($symb);
1.588 albertel 1641: if ($type eq 'map') {
1642: $res=&symbread($map);
1643: } else {
1644: $res=$symb;
1645: }
1646: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
1647: return $times{"$courseid\0$res"};
1.504 albertel 1648: }
1649:
1650: sub set_first_access {
1651: my ($type)=@_;
1652: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1653: my ($map,$id,$res)=&decode_symb($symb);
1.588 albertel 1654: if ($type eq 'map') {
1655: $res=&symbread($map);
1656: } else {
1657: $res=$symb;
1658: }
1659: my $firstaccess=&get_first_access($type,$symb);
1.505 albertel 1660: if (!$firstaccess) {
1.588 albertel 1661: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
1.505 albertel 1662: }
1663: return 'already_set';
1.504 albertel 1664: }
1665:
1.149 www 1666: sub checkout {
1667: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1668: my $now=time;
1669: my $lonhost=$perlvar{'lonHostID'};
1670: my $infostr=&escape(
1.234 www 1671: 'CHECKOUTTOKEN&'.
1.149 www 1672: $tuname.'&'.
1673: $tudom.'&'.
1674: $tcrsid.'&'.
1675: $symb.'&'.
1676: $now.'&'.$ENV{'REMOTE_ADDR'});
1677: my $token=&reply('tmpput:'.$infostr,$lonhost);
1.151 www 1678: if ($token=~/^error\:/) {
1679: &logthis("<font color=blue>WARNING: ".
1680: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
1681: "</font>");
1682: return '';
1683: }
1684:
1.149 www 1685: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
1686: $token=~tr/a-z/A-Z/;
1687:
1.153 www 1688: my %infohash=('resource.0.outtoken' => $token,
1689: 'resource.0.checkouttime' => $now,
1690: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
1.149 www 1691:
1692: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1693: return '';
1.151 www 1694: } else {
1695: &logthis("<font color=blue>WARNING: ".
1696: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
1697: "</font>");
1.149 www 1698: }
1699:
1700: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1701: &escape('Checkout '.$infostr.' - '.
1702: $token)) ne 'ok') {
1703: return '';
1.151 www 1704: } else {
1705: &logthis("<font color=blue>WARNING: ".
1706: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
1707: "</font>");
1.149 www 1708: }
1.151 www 1709: return $token;
1.149 www 1710: }
1711:
1712: # ------------------------------------------------------------ Check in an item
1713:
1714: sub checkin {
1715: my $token=shift;
1.150 www 1716: my $now=time;
1717: my ($ta,$tb,$lonhost)=split(/\*/,$token);
1718: $lonhost=~tr/A-Z/a-z/;
1.595 albertel 1719: my $dtoken=$ta.'_'.$hostname{$lonhost}.'_'.$tb;
1.150 www 1720: $dtoken=~s/\W/\_/g;
1.234 www 1721: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
1.150 www 1722: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
1723:
1.154 www 1724: unless (($tuname) && ($tudom)) {
1725: &logthis('Check in '.$token.' ('.$dtoken.') failed');
1726: return '';
1727: }
1728:
1729: unless (&allowed('mgr',$tcrsid)) {
1730: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
1731: $ENV{'user.name'}.' - '.$ENV{'user.domain'});
1732: return '';
1733: }
1734:
1.153 www 1735: my %infohash=('resource.0.intoken' => $token,
1736: 'resource.0.checkintime' => $now,
1737: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
1.150 www 1738:
1739: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1740: return '';
1741: }
1742:
1743: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1744: &escape('Checkin - '.$token)) ne 'ok') {
1745: return '';
1746: }
1747:
1748: return ($symb,$tuname,$tudom,$tcrsid);
1.110 www 1749: }
1750:
1751: # --------------------------------------------- Set Expire Date for Spreadsheet
1752:
1753: sub expirespread {
1754: my ($uname,$udom,$stype,$usymb)=@_;
1755: my $cid=$ENV{'request.course.id'};
1756: if ($cid) {
1757: my $now=time;
1758: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
1759: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1760: $ENV{'course.'.$cid.'.num'}.
1761: ':nohist_expirationdates:'.
1762: &escape($key).'='.$now,
1763: $ENV{'course.'.$cid.'.home'})
1764: }
1765: return 'ok';
1.14 www 1766: }
1767:
1.109 www 1768: # ----------------------------------------------------- Devalidate Spreadsheets
1769:
1770: sub devalidate {
1.325 www 1771: my ($symb,$uname,$udom)=@_;
1.109 www 1772: my $cid=$ENV{'request.course.id'};
1773: if ($cid) {
1.391 matthew 1774: # delete the stored spreadsheets for
1775: # - the student level sheet of this user in course's homespace
1776: # - the assessment level sheet for this resource
1777: # for this user in user's homespace
1.553 albertel 1778: # - current conditional state info
1.325 www 1779: my $key=$uname.':'.$udom.':';
1.109 www 1780: my $status=
1.299 matthew 1781: &del('nohist_calculatedsheets',
1.391 matthew 1782: [$key.'studentcalc:'],
1.133 albertel 1783: $ENV{'course.'.$cid.'.domain'},
1784: $ENV{'course.'.$cid.'.num'})
1785: .' '.
1786: &del('nohist_calculatedsheets_'.$cid,
1.391 matthew 1787: [$key.'assesscalc:'.$symb],$udom,$uname);
1.109 www 1788: unless ($status eq 'ok ok') {
1789: &logthis('Could not devalidate spreadsheet '.
1.325 www 1790: $uname.' at '.$udom.' for '.
1.109 www 1791: $symb.': '.$status);
1.133 albertel 1792: }
1.553 albertel 1793: &delenv('user.state.'.$cid);
1.109 www 1794: }
1795: }
1796:
1.265 albertel 1797: sub get_scalar {
1798: my ($string,$end) = @_;
1799: my $value;
1800: if ($$string =~ s/^([^&]*?)($end)/$2/) {
1801: $value = $1;
1802: } elsif ($$string =~ s/^([^&]*?)&//) {
1803: $value = $1;
1804: }
1805: return &unescape($value);
1806: }
1807:
1808: sub array2str {
1809: my (@array) = @_;
1810: my $result=&arrayref2str(\@array);
1811: $result=~s/^__ARRAY_REF__//;
1812: $result=~s/__END_ARRAY_REF__$//;
1813: return $result;
1814: }
1815:
1.204 albertel 1816: sub arrayref2str {
1817: my ($arrayref) = @_;
1.265 albertel 1818: my $result='__ARRAY_REF__';
1.204 albertel 1819: foreach my $elem (@$arrayref) {
1.265 albertel 1820: if(ref($elem) eq 'ARRAY') {
1821: $result.=&arrayref2str($elem).'&';
1822: } elsif(ref($elem) eq 'HASH') {
1823: $result.=&hashref2str($elem).'&';
1824: } elsif(ref($elem)) {
1825: #print("Got a ref of ".(ref($elem))." skipping.");
1.204 albertel 1826: } else {
1827: $result.=&escape($elem).'&';
1828: }
1829: }
1830: $result=~s/\&$//;
1.265 albertel 1831: $result .= '__END_ARRAY_REF__';
1.204 albertel 1832: return $result;
1833: }
1834:
1.168 albertel 1835: sub hash2str {
1.204 albertel 1836: my (%hash) = @_;
1837: my $result=&hashref2str(\%hash);
1.265 albertel 1838: $result=~s/^__HASH_REF__//;
1839: $result=~s/__END_HASH_REF__$//;
1.204 albertel 1840: return $result;
1841: }
1842:
1843: sub hashref2str {
1844: my ($hashref)=@_;
1.265 albertel 1845: my $result='__HASH_REF__';
1.495 albertel 1846: foreach (sort(keys(%$hashref))) {
1.204 albertel 1847: if (ref($_) eq 'ARRAY') {
1.265 albertel 1848: $result.=&arrayref2str($_).'=';
1.204 albertel 1849: } elsif (ref($_) eq 'HASH') {
1.265 albertel 1850: $result.=&hashref2str($_).'=';
1.204 albertel 1851: } elsif (ref($_)) {
1.265 albertel 1852: $result.='=';
1853: #print("Got a ref of ".(ref($_))." skipping.");
1.204 albertel 1854: } else {
1.265 albertel 1855: if ($_) {$result.=&escape($_).'=';} else { last; }
1.204 albertel 1856: }
1857:
1.265 albertel 1858: if(ref($hashref->{$_}) eq 'ARRAY') {
1859: $result.=&arrayref2str($hashref->{$_}).'&';
1860: } elsif(ref($hashref->{$_}) eq 'HASH') {
1861: $result.=&hashref2str($hashref->{$_}).'&';
1862: } elsif(ref($hashref->{$_})) {
1863: $result.='&';
1864: #print("Got a ref of ".(ref($hashref->{$_}))." skipping.");
1.204 albertel 1865: } else {
1.265 albertel 1866: $result.=&escape($hashref->{$_}).'&';
1.204 albertel 1867: }
1868: }
1.168 albertel 1869: $result=~s/\&$//;
1.265 albertel 1870: $result .= '__END_HASH_REF__';
1.168 albertel 1871: return $result;
1872: }
1873:
1874: sub str2hash {
1.265 albertel 1875: my ($string)=@_;
1876: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
1877: return %$hash;
1878: }
1879:
1880: sub str2hashref {
1.168 albertel 1881: my ($string) = @_;
1.265 albertel 1882:
1883: my %hash;
1884:
1885: if($string !~ /^__HASH_REF__/) {
1886: if (! ($string eq '' || !defined($string))) {
1887: $hash{'error'}='Not hash reference';
1888: }
1889: return (\%hash, $string);
1890: }
1891:
1892: $string =~ s/^__HASH_REF__//;
1893:
1894: while($string !~ /^__END_HASH_REF__/) {
1895: #key
1896: my $key='';
1897: if($string =~ /^__HASH_REF__/) {
1898: ($key, $string)=&str2hashref($string);
1899: if(defined($key->{'error'})) {
1900: $hash{'error'}='Bad data';
1901: return (\%hash, $string);
1902: }
1903: } elsif($string =~ /^__ARRAY_REF__/) {
1904: ($key, $string)=&str2arrayref($string);
1905: if($key->[0] eq 'Array reference error') {
1906: $hash{'error'}='Bad data';
1907: return (\%hash, $string);
1908: }
1909: } else {
1910: $string =~ s/^(.*?)=//;
1.267 albertel 1911: $key=&unescape($1);
1.265 albertel 1912: }
1913: $string =~ s/^=//;
1914:
1915: #value
1916: my $value='';
1917: if($string =~ /^__HASH_REF__/) {
1918: ($value, $string)=&str2hashref($string);
1919: if(defined($value->{'error'})) {
1920: $hash{'error'}='Bad data';
1921: return (\%hash, $string);
1922: }
1923: } elsif($string =~ /^__ARRAY_REF__/) {
1924: ($value, $string)=&str2arrayref($string);
1925: if($value->[0] eq 'Array reference error') {
1926: $hash{'error'}='Bad data';
1927: return (\%hash, $string);
1928: }
1929: } else {
1930: $value=&get_scalar(\$string,'__END_HASH_REF__');
1931: }
1932: $string =~ s/^&//;
1933:
1934: $hash{$key}=$value;
1.204 albertel 1935: }
1.265 albertel 1936:
1937: $string =~ s/^__END_HASH_REF__//;
1938:
1939: return (\%hash, $string);
1.204 albertel 1940: }
1941:
1942: sub str2array {
1.265 albertel 1943: my ($string)=@_;
1944: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
1945: return @$array;
1946: }
1947:
1948: sub str2arrayref {
1.204 albertel 1949: my ($string) = @_;
1.265 albertel 1950: my @array;
1951:
1952: if($string !~ /^__ARRAY_REF__/) {
1953: if (! ($string eq '' || !defined($string))) {
1954: $array[0]='Array reference error';
1955: }
1956: return (\@array, $string);
1957: }
1958:
1959: $string =~ s/^__ARRAY_REF__//;
1960:
1961: while($string !~ /^__END_ARRAY_REF__/) {
1962: my $value='';
1963: if($string =~ /^__HASH_REF__/) {
1964: ($value, $string)=&str2hashref($string);
1965: if(defined($value->{'error'})) {
1966: $array[0] ='Array reference error';
1967: return (\@array, $string);
1968: }
1969: } elsif($string =~ /^__ARRAY_REF__/) {
1970: ($value, $string)=&str2arrayref($string);
1971: if($value->[0] eq 'Array reference error') {
1972: $array[0] ='Array reference error';
1973: return (\@array, $string);
1974: }
1975: } else {
1976: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
1977: }
1978: $string =~ s/^&//;
1979:
1980: push(@array, $value);
1.191 harris41 1981: }
1.265 albertel 1982:
1983: $string =~ s/^__END_ARRAY_REF__//;
1984:
1985: return (\@array, $string);
1.168 albertel 1986: }
1987:
1.167 albertel 1988: # -------------------------------------------------------------------Temp Store
1989:
1.168 albertel 1990: sub tmpreset {
1991: my ($symb,$namespace,$domain,$stuname) = @_;
1992: if (!$symb) {
1993: $symb=&symbread();
1.380 albertel 1994: if (!$symb) { $symb= $ENV{'request.url'}; }
1.168 albertel 1995: }
1996: $symb=escape($symb);
1997:
1998: if (!$namespace) { $namespace=$ENV{'request.state'}; }
1999: $namespace=~s/\//\_/g;
2000: $namespace=~s/\W//g;
2001:
2002: if (!$domain) { $domain=$ENV{'user.domain'}; }
2003: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1.591 albertel 2004: if ($domain eq 'public' && $stuname eq 'public') {
2005: $stuname=$ENV{'REMOTE_ADDR'};
2006: }
1.168 albertel 2007: my $path=$perlvar{'lonDaemons'}.'/tmp';
2008: my %hash;
2009: if (tie(%hash,'GDBM_File',
2010: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2011: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2012: foreach my $key (keys %hash) {
1.180 albertel 2013: if ($key=~ /:$symb/) {
1.168 albertel 2014: delete($hash{$key});
2015: }
2016: }
2017: }
2018: }
2019:
1.167 albertel 2020: sub tmpstore {
1.168 albertel 2021: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2022:
2023: if (!$symb) {
2024: $symb=&symbread();
2025: if (!$symb) { $symb= $ENV{'request.url'}; }
2026: }
2027: $symb=escape($symb);
2028:
2029: if (!$namespace) {
2030: # I don't think we would ever want to store this for a course.
2031: # it seems this will only be used if we don't have a course.
2032: #$namespace=$ENV{'request.course.id'};
2033: #if (!$namespace) {
2034: $namespace=$ENV{'request.state'};
2035: #}
2036: }
2037: $namespace=~s/\//\_/g;
2038: $namespace=~s/\W//g;
2039: if (!$domain) { $domain=$ENV{'user.domain'}; }
2040: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1.591 albertel 2041: if ($domain eq 'public' && $stuname eq 'public') {
2042: $stuname=$ENV{'REMOTE_ADDR'};
2043: }
1.168 albertel 2044: my $now=time;
2045: my %hash;
2046: my $path=$perlvar{'lonDaemons'}.'/tmp';
2047: if (tie(%hash,'GDBM_File',
2048: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2049: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2050: $hash{"version:$symb"}++;
2051: my $version=$hash{"version:$symb"};
2052: my $allkeys='';
2053: foreach my $key (keys(%$storehash)) {
2054: $allkeys.=$key.':';
1.591 albertel 2055: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
1.168 albertel 2056: }
2057: $hash{"$version:$symb:timestamp"}=$now;
2058: $allkeys.='timestamp';
2059: $hash{"$version:keys:$symb"}=$allkeys;
2060: if (untie(%hash)) {
2061: return 'ok';
2062: } else {
2063: return "error:$!";
2064: }
2065: } else {
2066: return "error:$!";
2067: }
2068: }
1.167 albertel 2069:
1.168 albertel 2070: # -----------------------------------------------------------------Temp Restore
1.167 albertel 2071:
1.168 albertel 2072: sub tmprestore {
2073: my ($symb,$namespace,$domain,$stuname) = @_;
1.167 albertel 2074:
1.168 albertel 2075: if (!$symb) {
2076: $symb=&symbread();
2077: if (!$symb) { $symb= $ENV{'request.url'}; }
2078: }
2079: $symb=escape($symb);
2080:
2081: if (!$namespace) { $namespace=$ENV{'request.state'}; }
1.591 albertel 2082:
1.168 albertel 2083: if (!$domain) { $domain=$ENV{'user.domain'}; }
2084: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1.591 albertel 2085: if ($domain eq 'public' && $stuname eq 'public') {
2086: $stuname=$ENV{'REMOTE_ADDR'};
2087: }
1.168 albertel 2088: my %returnhash;
2089: $namespace=~s/\//\_/g;
2090: $namespace=~s/\W//g;
2091: my %hash;
2092: my $path=$perlvar{'lonDaemons'}.'/tmp';
2093: if (tie(%hash,'GDBM_File',
2094: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2095: &GDBM_READER(),0640)) {
1.168 albertel 2096: my $version=$hash{"version:$symb"};
2097: $returnhash{'version'}=$version;
2098: my $scope;
2099: for ($scope=1;$scope<=$version;$scope++) {
2100: my $vkeys=$hash{"$scope:keys:$symb"};
2101: my @keys=split(/:/,$vkeys);
2102: my $key;
2103: $returnhash{"$scope:keys"}=$vkeys;
2104: foreach $key (@keys) {
1.591 albertel 2105: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
2106: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
1.167 albertel 2107: }
2108: }
1.168 albertel 2109: if (!(untie(%hash))) {
2110: return "error:$!";
2111: }
2112: } else {
2113: return "error:$!";
2114: }
2115: return %returnhash;
1.167 albertel 2116: }
2117:
1.9 www 2118: # ----------------------------------------------------------------------- Store
2119:
2120: sub store {
1.124 www 2121: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2122: my $home='';
2123:
1.168 albertel 2124: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2125:
1.213 www 2126: $symb=&symbclean($symb);
1.122 albertel 2127: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2128:
1.325 www 2129: if (!$domain) { $domain=$ENV{'user.domain'}; }
2130: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2131:
2132: &devalidate($symb,$stuname,$domain);
1.109 www 2133:
2134: $symb=escape($symb);
1.187 www 2135: if (!$namespace) {
2136: unless ($namespace=$ENV{'request.course.id'}) {
2137: return '';
2138: }
2139: }
1.122 albertel 2140: if (!$home) { $home=$ENV{'user.home'}; }
1.447 www 2141:
2142: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2143: $$storehash{'host'}=$perlvar{'lonHostID'};
2144:
1.12 www 2145: my $namevalue='';
1.191 harris41 2146: foreach (keys %$storehash) {
1.591 albertel 2147: $namevalue.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2148: }
1.12 www 2149: $namevalue=~s/\&$//;
1.187 www 2150: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
1.124 www 2151: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.9 www 2152: }
2153:
1.47 www 2154: # -------------------------------------------------------------- Critical Store
2155:
2156: sub cstore {
1.124 www 2157: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2158: my $home='';
2159:
1.168 albertel 2160: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2161:
1.213 www 2162: $symb=&symbclean($symb);
1.122 albertel 2163: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2164:
1.325 www 2165: if (!$domain) { $domain=$ENV{'user.domain'}; }
2166: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2167:
2168: &devalidate($symb,$stuname,$domain);
1.109 www 2169:
2170: $symb=escape($symb);
1.187 www 2171: if (!$namespace) {
2172: unless ($namespace=$ENV{'request.course.id'}) {
2173: return '';
2174: }
2175: }
1.122 albertel 2176: if (!$home) { $home=$ENV{'user.home'}; }
1.447 www 2177:
2178: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2179: $$storehash{'host'}=$perlvar{'lonHostID'};
1.122 albertel 2180:
1.47 www 2181: my $namevalue='';
1.191 harris41 2182: foreach (keys %$storehash) {
1.591 albertel 2183: $namevalue.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2184: }
1.47 www 2185: $namevalue=~s/\&$//;
1.187 www 2186: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
1.188 www 2187: return critical
2188: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.47 www 2189: }
2190:
1.9 www 2191: # --------------------------------------------------------------------- Restore
2192:
2193: sub restore {
1.124 www 2194: my ($symb,$namespace,$domain,$stuname) = @_;
2195: my $home='';
2196:
1.168 albertel 2197: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2198:
1.122 albertel 2199: if (!$symb) {
2200: unless ($symb=escape(&symbread())) { return ''; }
2201: } else {
1.213 www 2202: $symb=&escape(&symbclean($symb));
1.122 albertel 2203: }
1.188 www 2204: if (!$namespace) {
2205: unless ($namespace=$ENV{'request.course.id'}) {
2206: return '';
2207: }
2208: }
1.122 albertel 2209: if (!$domain) { $domain=$ENV{'user.domain'}; }
2210: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2211: if (!$home) { $home=$ENV{'user.home'}; }
2212: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
2213:
1.12 www 2214: my %returnhash=();
1.191 harris41 2215: foreach (split(/\&/,$answer)) {
1.12 www 2216: my ($name,$value)=split(/\=/,$_);
1.591 albertel 2217: $returnhash{&unescape($name)}=&thaw_unescape($value);
1.191 harris41 2218: }
1.75 www 2219: my $version;
2220: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.191 harris41 2221: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1.75 www 2222: $returnhash{$_}=$returnhash{$version.':'.$_};
1.191 harris41 2223: }
1.75 www 2224: }
1.13 www 2225: return %returnhash;
1.34 www 2226: }
2227:
2228: # ---------------------------------------------------------- Course Description
2229:
2230: sub coursedescription {
2231: my $courseid=shift;
2232: $courseid=~s/^\///;
1.49 www 2233: $courseid=~s/\_/\//g;
1.34 www 2234: my ($cdomain,$cnum)=split(/\//,$courseid);
1.129 albertel 2235: my $chome=&homeserver($cnum,$cdomain);
1.302 albertel 2236: my $normalid=$cdomain.'_'.$cnum;
2237: # need to always cache even if we get errors otherwise we keep
2238: # trying and trying and trying to get the course description.
2239: my %envhash=();
2240: my %returnhash=();
2241: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.34 www 2242: if ($chome ne 'no_host') {
1.302 albertel 2243: %returnhash=&dump('environment',$cdomain,$cnum);
1.129 albertel 2244: if (!exists($returnhash{'con_lost'})) {
2245: $returnhash{'home'}= $chome;
2246: $returnhash{'domain'} = $cdomain;
2247: $returnhash{'num'} = $cnum;
1.130 albertel 2248: while (my ($name,$value) = each %returnhash) {
1.53 www 2249: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.129 albertel 2250: }
1.270 www 2251: $returnhash{'url'}=&clutter($returnhash{'url'});
1.34 www 2252: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 2253: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.60 www 2254: $envhash{'course.'.$normalid.'.home'}=$chome;
2255: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
2256: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.34 www 2257: }
2258: }
1.302 albertel 2259: &appenv(%envhash);
2260: return %returnhash;
1.461 www 2261: }
2262:
2263: # -------------------------------------------------See if a user is privileged
2264:
2265: sub privileged {
2266: my ($username,$domain)=@_;
2267: my $rolesdump=&reply("dump:$domain:$username:roles",
2268: &homeserver($username,$domain));
2269: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
2270: my $now=time;
2271: if ($rolesdump ne '') {
2272: foreach (split(/&/,$rolesdump)) {
1.586 albertel 2273: if ($_!~/^rolesdef_/) {
1.461 www 2274: my ($area,$role)=split(/=/,$_);
2275: $area=~s/\_\w\w$//;
2276: my ($trole,$tend,$tstart)=split(/_/,$role);
2277: if (($trole eq 'dc') || ($trole eq 'su')) {
2278: my $active=1;
2279: if ($tend) {
2280: if ($tend<$now) { $active=0; }
2281: }
2282: if ($tstart) {
2283: if ($tstart>$now) { $active=0; }
2284: }
2285: if ($active) { return 1; }
2286: }
2287: }
2288: }
2289: }
2290: return 0;
1.9 www 2291: }
1.1 albertel 2292:
1.103 harris41 2293: # -------------------------------------------------------- Get user privileges
1.11 www 2294:
2295: sub rolesinit {
2296: my ($domain,$username,$authhost)=@_;
2297: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 2298: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 2299: my %allroles=();
2300: my $now=time;
1.21 www 2301: my $userroles="user.login.time=$now\n";
1.11 www 2302:
2303: if ($rolesdump ne '') {
1.191 harris41 2304: foreach (split(/&/,$rolesdump)) {
1.586 albertel 2305: if ($_!~/^rolesdef_/) {
1.11 www 2306: my ($area,$role)=split(/=/,$_);
1.587 albertel 2307: $area=~s/\_\w\w$//;
2308:
2309: my ($trole,$tend,$tstart);
2310: if ($role=~/^cr/) {
2311: ($trole,my $trest)=($role=~m|^(cr/\w+/\w+/[a-zA-Z0-9]+)_(.*)$|);
2312: ($tend,$tstart)=split('_',$trest);
2313: } else {
2314: ($trole,$tend,$tstart)=split(/_/,$role);
2315: }
1.576 albertel 2316: $userroles.=&set_arearole($trole,$area,$tstart,$tend,$domain,$username);
1.567 raeburn 2317: if (($tend!=0) && ($tend<$now)) { $trole=''; }
2318: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
1.11 www 2319: if (($area ne '') && ($trole ne '')) {
1.347 albertel 2320: my $spec=$trole.'.'.$area;
2321: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
2322: if ($trole =~ /^cr\//) {
1.567 raeburn 2323: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
1.347 albertel 2324: } else {
1.567 raeburn 2325: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
1.347 albertel 2326: }
1.12 www 2327: }
2328: }
1.191 harris41 2329: }
1.567 raeburn 2330: my ($author,$adv) = &set_userprivs(\$userroles,\%allroles);
1.128 www 2331: $userroles.='user.adv='.$adv."\n".
2332: 'user.author='.$author."\n";
1.126 www 2333: $ENV{'user.adv'}=$adv;
1.11 www 2334: }
2335: return $userroles;
2336: }
2337:
1.567 raeburn 2338: sub set_arearole {
2339: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
2340: # log the associated role with the area
2341: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
2342: return 'user.role.'.$trole.'.'.$area.'='.$tstart.'.'.$tend."\n";
2343: }
2344:
2345: sub custom_roleprivs {
2346: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
2347: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
2348: my $homsvr=homeserver($rauthor,$rdomain);
2349: if ($hostname{$homsvr} ne '') {
2350: my ($rdummy,$roledef)=
2351: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
2352: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
2353: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
2354: if (defined($syspriv)) {
2355: $$allroles{'cm./'}.=':'.$syspriv;
2356: $$allroles{$spec.'./'}.=':'.$syspriv;
2357: }
2358: if ($tdomain ne '') {
2359: if (defined($dompriv)) {
2360: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
2361: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
2362: }
2363: if (($trest ne '') && (defined($coursepriv))) {
2364: $$allroles{'cm.'.$area}.=':'.$coursepriv;
2365: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
2366: }
2367: }
2368: }
2369: }
2370: }
2371:
2372:
2373: sub standard_roleprivs {
2374: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
2375: if (defined($pr{$trole.':s'})) {
2376: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
2377: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
2378: }
2379: if ($tdomain ne '') {
2380: if (defined($pr{$trole.':d'})) {
2381: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2382: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2383: }
2384: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
2385: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
2386: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
2387: }
2388: }
2389: }
2390:
2391: sub set_userprivs {
2392: my ($userroles,$allroles) = @_;
2393: my $author=0;
2394: my $adv=0;
2395: foreach (keys %{$allroles}) {
2396: my %thesepriv=();
2397: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
2398: foreach (split(/:/,$$allroles{$_})) {
2399: if ($_ ne '') {
2400: my ($privilege,$restrictions)=split(/&/,$_);
2401: if ($restrictions eq '') {
2402: $thesepriv{$privilege}='F';
2403: } elsif ($thesepriv{$privilege} ne 'F') {
2404: $thesepriv{$privilege}.=$restrictions;
2405: }
2406: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
2407: }
2408: }
2409: my $thesestr='';
2410: foreach (keys %thesepriv) { $thesestr.=':'.$_.'&'.$thesepriv{$_}; }
2411: $$userroles.='user.priv.'.$_.'='.$thesestr."\n";
2412: }
2413: return ($author,$adv);
2414: }
2415:
1.12 www 2416: # --------------------------------------------------------------- get interface
2417:
2418: sub get {
1.131 albertel 2419: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2420: my $items='';
1.191 harris41 2421: foreach (@$storearr) {
1.12 www 2422: $items.=escape($_).'&';
1.191 harris41 2423: }
1.12 www 2424: $items=~s/\&$//;
1.131 albertel 2425: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2426: if (!$uname) { $uname=$ENV{'user.name'}; }
2427: my $uhome=&homeserver($uname,$udomain);
2428:
1.133 albertel 2429: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2430: my @pairs=split(/\&/,$rep);
1.273 albertel 2431: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2432: return @pairs;
2433: }
1.15 www 2434: my %returnhash=();
1.42 www 2435: my $i=0;
1.191 harris41 2436: foreach (@$storearr) {
1.557 albertel 2437: $returnhash{$_}=&thaw_unescape($pairs[$i]);
1.42 www 2438: $i++;
1.191 harris41 2439: }
1.15 www 2440: return %returnhash;
1.27 www 2441: }
2442:
2443: # --------------------------------------------------------------- del interface
2444:
2445: sub del {
1.133 albertel 2446: my ($namespace,$storearr,$udomain,$uname)=@_;
1.27 www 2447: my $items='';
1.191 harris41 2448: foreach (@$storearr) {
1.27 www 2449: $items.=escape($_).'&';
1.191 harris41 2450: }
1.27 www 2451: $items=~s/\&$//;
1.133 albertel 2452: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2453: if (!$uname) { $uname=$ENV{'user.name'}; }
2454: my $uhome=&homeserver($uname,$udomain);
2455:
2456: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2457: }
2458:
2459: # -------------------------------------------------------------- dump interface
2460:
2461: sub dump {
1.193 www 2462: my ($namespace,$udomain,$uname,$regexp)=@_;
1.129 albertel 2463: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2464: if (!$uname) { $uname=$ENV{'user.name'}; }
2465: my $uhome=&homeserver($uname,$udomain);
1.193 www 2466: if ($regexp) {
2467: $regexp=&escape($regexp);
2468: } else {
2469: $regexp='.';
2470: }
2471: my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
1.12 www 2472: my @pairs=split(/\&/,$rep);
2473: my %returnhash=();
1.191 harris41 2474: foreach (@pairs) {
1.12 www 2475: my ($key,$value)=split(/=/,$_);
1.557 albertel 2476: $returnhash{unescape($key)}=&thaw_unescape($value);
1.318 matthew 2477: }
2478: return %returnhash;
1.407 www 2479: }
2480:
2481: # -------------------------------------------------------------- keys interface
2482:
2483: sub getkeys {
2484: my ($namespace,$udomain,$uname)=@_;
2485: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2486: if (!$uname) { $uname=$ENV{'user.name'}; }
2487: my $uhome=&homeserver($uname,$udomain);
2488: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
2489: my @keyarray=();
2490: foreach (split(/\&/,$rep)) {
2491: push (@keyarray,&unescape($_));
2492: }
2493: return @keyarray;
1.318 matthew 2494: }
2495:
1.319 matthew 2496: # --------------------------------------------------------------- currentdump
2497: sub currentdump {
1.328 matthew 2498: my ($courseid,$sdom,$sname)=@_;
1.326 matthew 2499: $courseid = $ENV{'request.course.id'} if (! defined($courseid));
2500: $sdom = $ENV{'user.domain'} if (! defined($sdom));
2501: $sname = $ENV{'user.name'} if (! defined($sname));
2502: my $uhome = &homeserver($sname,$sdom);
2503: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
1.318 matthew 2504: return if ($rep =~ /^(error:|no_such_host)/);
1.319 matthew 2505: #
1.318 matthew 2506: my %returnhash=();
1.319 matthew 2507: #
2508: if ($rep eq "unknown_cmd") {
2509: # an old lond will not know currentdump
2510: # Do a dump and make it look like a currentdump
1.326 matthew 2511: my @tmp = &dump($courseid,$sdom,$sname,'.');
1.319 matthew 2512: return if ($tmp[0] =~ /^(error:|no_such_host)/);
2513: my %hash = @tmp;
2514: @tmp=();
1.424 matthew 2515: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
1.319 matthew 2516: } else {
2517: my @pairs=split(/\&/,$rep);
2518: foreach (@pairs) {
2519: my ($key,$value)=split(/=/,$_);
2520: my ($symb,$param) = split(/:/,$key);
2521: $returnhash{&unescape($symb)}->{&unescape($param)} =
1.557 albertel 2522: &thaw_unescape($value);
1.319 matthew 2523: }
1.191 harris41 2524: }
1.12 www 2525: return %returnhash;
1.424 matthew 2526: }
2527:
2528: sub convert_dump_to_currentdump{
2529: my %hash = %{shift()};
2530: my %returnhash;
2531: # Code ripped from lond, essentially. The only difference
2532: # here is the unescaping done by lonnet::dump(). Conceivably
2533: # we might run in to problems with parameter names =~ /^v\./
2534: while (my ($key,$value) = each(%hash)) {
2535: my ($v,$symb,$param) = split(/:/,$key);
2536: next if ($v eq 'version' || $symb eq 'keys');
2537: next if (exists($returnhash{$symb}) &&
2538: exists($returnhash{$symb}->{$param}) &&
2539: $returnhash{$symb}->{'v.'.$param} > $v);
2540: $returnhash{$symb}->{$param}=$value;
2541: $returnhash{$symb}->{'v.'.$param}=$v;
2542: }
2543: #
2544: # Remove all of the keys in the hashes which keep track of
2545: # the version of the parameter.
2546: while (my ($symb,$param_hash) = each(%returnhash)) {
2547: # use a foreach because we are going to delete from the hash.
2548: foreach my $key (keys(%$param_hash)) {
2549: delete($param_hash->{$key}) if ($key =~ /^v\./);
2550: }
2551: }
2552: return \%returnhash;
1.12 www 2553: }
2554:
1.449 matthew 2555: # --------------------------------------------------------------- inc interface
2556:
2557: sub inc {
2558: my ($namespace,$store,$udomain,$uname) = @_;
2559: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2560: if (!$uname) { $uname=$ENV{'user.name'}; }
2561: my $uhome=&homeserver($uname,$udomain);
2562: my $items='';
2563: if (! ref($store)) {
2564: # got a single value, so use that instead
2565: $items = &escape($store).'=&';
2566: } elsif (ref($store) eq 'SCALAR') {
2567: $items = &escape($$store).'=&';
2568: } elsif (ref($store) eq 'ARRAY') {
2569: $items = join('=&',map {&escape($_);} @{$store});
2570: } elsif (ref($store) eq 'HASH') {
2571: while (my($key,$value) = each(%{$store})) {
2572: $items.= &escape($key).'='.&escape($value).'&';
2573: }
2574: }
2575: $items=~s/\&$//;
2576: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
2577: }
2578:
1.12 www 2579: # --------------------------------------------------------------- put interface
2580:
2581: sub put {
1.134 albertel 2582: my ($namespace,$storehash,$udomain,$uname)=@_;
2583: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2584: if (!$uname) { $uname=$ENV{'user.name'}; }
2585: my $uhome=&homeserver($uname,$udomain);
1.12 www 2586: my $items='';
1.191 harris41 2587: foreach (keys %$storehash) {
1.557 albertel 2588: $items.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2589: }
1.12 www 2590: $items=~s/\&$//;
1.134 albertel 2591: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1.47 www 2592: }
2593:
1.524 raeburn 2594: # ---------------------------------------------------------- putstore interface
2595:
2596: sub putstore {
2597: my ($namespace,$storehash,$udomain,$uname)=@_;
2598: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2599: if (!$uname) { $uname=$ENV{'user.name'}; }
2600: my $uhome=&homeserver($uname,$udomain);
2601: my $items='';
2602: my %allitems = ();
2603: foreach (keys %$storehash) {
2604: if ($_ =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
2605: my $key = $1.':keys:'.$2;
2606: $allitems{$key} .= $3.':';
2607: }
1.591 albertel 2608: $items.=$_.'='.&freeze_escape($$storehash{$_}).'&';
1.524 raeburn 2609: }
2610: foreach (keys %allitems) {
2611: $allitems{$_} =~ s/\:$//;
2612: $items.= $_.'='.$allitems{$_}.'&';
2613: }
2614: $items=~s/\&$//;
2615: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
2616: }
2617:
1.47 www 2618: # ------------------------------------------------------ critical put interface
2619:
2620: sub cput {
1.134 albertel 2621: my ($namespace,$storehash,$udomain,$uname)=@_;
2622: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2623: if (!$uname) { $uname=$ENV{'user.name'}; }
2624: my $uhome=&homeserver($uname,$udomain);
1.47 www 2625: my $items='';
1.191 harris41 2626: foreach (keys %$storehash) {
1.557 albertel 2627: $items.=escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2628: }
1.47 www 2629: $items=~s/\&$//;
1.134 albertel 2630: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2631: }
2632:
2633: # -------------------------------------------------------------- eget interface
2634:
2635: sub eget {
1.133 albertel 2636: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2637: my $items='';
1.191 harris41 2638: foreach (@$storearr) {
1.12 www 2639: $items.=escape($_).'&';
1.191 harris41 2640: }
1.12 www 2641: $items=~s/\&$//;
1.133 albertel 2642: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2643: if (!$uname) { $uname=$ENV{'user.name'}; }
2644: my $uhome=&homeserver($uname,$udomain);
2645: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2646: my @pairs=split(/\&/,$rep);
2647: my %returnhash=();
1.42 www 2648: my $i=0;
1.191 harris41 2649: foreach (@$storearr) {
1.557 albertel 2650: $returnhash{$_}=&thaw_unescape($pairs[$i]);
1.42 www 2651: $i++;
1.191 harris41 2652: }
1.12 www 2653: return %returnhash;
2654: }
2655:
1.341 www 2656: # ---------------------------------------------- Custom access rule evaluation
2657:
2658: sub customaccess {
2659: my ($priv,$uri)=@_;
1.342 www 2660: my ($urole,$urealm)=split(/\./,$ENV{'request.role'});
1.343 www 2661: $urealm=~s/^\W//;
2662: my ($udom,$ucrs,$usec)=split(/\//,$urealm);
1.341 www 2663: my $access=0;
2664: foreach (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
1.342 www 2665: my ($effect,$realm,$role)=split(/\:/,$_);
1.343 www 2666: if ($role) {
2667: if ($role ne $urole) { next; }
2668: }
2669: foreach (split(/\s*\,\s*/,$realm)) {
2670: my ($tdom,$tcrs,$tsec)=split(/\_/,$_);
2671: if ($tdom) {
2672: if ($tdom ne $udom) { next; }
2673: }
2674: if ($tcrs) {
2675: if ($tcrs ne $ucrs) { next; }
2676: }
2677: if ($tsec) {
2678: if ($tsec ne $usec) { next; }
2679: }
2680: $access=($effect eq 'allow');
2681: last;
1.342 www 2682: }
1.402 bowersj2 2683: if ($realm eq '' && $role eq '') {
2684: $access=($effect eq 'allow');
2685: }
1.341 www 2686: }
2687: return $access;
2688: }
2689:
1.103 harris41 2690: # ------------------------------------------------- Check for a user privilege
1.12 www 2691:
2692: sub allowed {
1.579 albertel 2693: my ($priv,$uri,$symb)=@_;
1.439 www 2694: $uri=&deversion($uri);
1.152 www 2695: my $orguri=$uri;
1.52 www 2696: $uri=&declutter($uri);
1.545 banghart 2697:
2698:
2699:
1.398 albertel 2700: if (defined($ENV{'allowed.'.$priv})) { return $ENV{'allowed.'.$priv}; }
1.54 www 2701: # Free bre access to adm and meta resources
1.529 albertel 2702: if (((($uri=~/^adm\//) && ($uri !~ m|/bulletinboard$|))
2703: || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 2704: return 'F';
1.159 www 2705: }
2706:
1.545 banghart 2707: # Free bre access to user's own portfolio contents
1.546 albertel 2708: my ($space,$domain,$name,$dir)=split('/',$uri);
2709: if (('uploaded' eq $space) && ($ENV{'user.name'} eq $name) &&
2710: ($ENV{'user.domain'} eq $domain) && ('portfolio' eq $dir)) {
1.545 banghart 2711: return 'F';
2712: }
2713:
1.159 www 2714: # Free bre to public access
2715:
2716: if ($priv eq 'bre') {
1.238 www 2717: my $copyright=&metadata($uri,'copyright');
1.301 www 2718: if (($copyright eq 'public') && (!$ENV{'request.course.id'})) {
2719: return 'F';
2720: }
1.238 www 2721: if ($copyright eq 'priv') {
2722: $uri=~/([^\/]+)\/([^\/]+)\//;
2723: unless (($ENV{'user.name'} eq $2) && ($ENV{'user.domain'} eq $1)) {
2724: return '';
2725: }
2726: }
2727: if ($copyright eq 'domain') {
2728: $uri=~/([^\/]+)\/([^\/]+)\//;
2729: unless (($ENV{'user.domain'} eq $1) ||
2730: ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $1)) {
2731: return '';
2732: }
1.262 matthew 2733: }
2734: if ($ENV{'request.role'}=~ /li\.\//) {
2735: # Library role, so allow browsing of resources in this domain.
2736: return 'F';
1.238 www 2737: }
1.341 www 2738: if ($copyright eq 'custom') {
2739: unless (&customaccess($priv,$uri)) { return ''; }
2740: }
1.14 www 2741: }
1.264 matthew 2742: # Domain coordinator is trying to create a course
2743: if (($priv eq 'ccc') && ($ENV{'request.role'} =~ /^dc\./)) {
2744: # uri is the requested domain in this case.
2745: # comparison to 'request.role.domain' shows if the user has selected
2746: # a role of dc for the domain in question.
2747: return 'F' if ($uri eq $ENV{'request.role.domain'});
2748: }
1.29 www 2749:
1.52 www 2750: my $thisallowed='';
2751: my $statecond=0;
2752: my $courseprivid='';
2753:
2754: # Course
2755:
1.479 albertel 2756: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2757: $thisallowed.=$1;
2758: }
1.29 www 2759:
1.52 www 2760: # Domain
2761:
2762: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1.479 albertel 2763: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 2764: $thisallowed.=$1;
2765: }
1.52 www 2766:
2767: # Course: uri itself is a course
1.66 www 2768: my $courseuri=$uri;
2769: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 2770: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 2771:
1.83 www 2772: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.479 albertel 2773: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 2774: $thisallowed.=$1;
2775: }
1.29 www 2776:
1.314 www 2777: # URI is an uploaded document for this course
2778:
1.492 albertel 2779: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
2780: my $refuri=$ENV{'httpref.'.$orguri};
2781: if ($refuri) {
2782: if ($refuri =~ m|^/adm/|) {
2783: $thisallowed='F';
2784: }
2785: }
1.314 www 2786: }
1.492 albertel 2787:
1.52 www 2788: # Full access at system, domain or course-wide level? Exit.
1.29 www 2789:
2790: if ($thisallowed=~/F/) {
2791: return 'F';
2792: }
2793:
1.52 www 2794: # If this is generating or modifying users, exit with special codes
1.29 www 2795:
1.479 albertel 2796: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:\Q$priv\E\:/) {
1.52 www 2797: return $thisallowed;
2798: }
2799: #
1.103 harris41 2800: # Gathered so far: system, domain and course wide privileges
1.52 www 2801: #
2802: # Course: See if uri or referer is an individual resource that is part of
2803: # the course
2804:
2805: if ($ENV{'request.course.id'}) {
1.232 www 2806:
1.52 www 2807: $courseprivid=$ENV{'request.course.id'};
2808: if ($ENV{'request.course.sec'}) {
2809: $courseprivid.='/'.$ENV{'request.course.sec'};
2810: }
2811: $courseprivid=~s/\_/\//;
2812: my $checkreferer=1;
1.232 www 2813: my ($match,$cond)=&is_on_map($uri);
2814: if ($match) {
2815: $statecond=$cond;
1.52 www 2816: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1.479 albertel 2817: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2818: $thisallowed.=$1;
2819: $checkreferer=0;
2820: }
1.29 www 2821: }
1.83 www 2822:
1.148 www 2823: if ($checkreferer) {
1.152 www 2824: my $refuri=$ENV{'httpref.'.$orguri};
1.148 www 2825: unless ($refuri) {
1.191 harris41 2826: foreach (keys %ENV) {
1.148 www 2827: if ($_=~/^httpref\..*\*/) {
2828: my $pattern=$_;
1.156 www 2829: $pattern=~s/^httpref\.\/res\///;
1.148 www 2830: $pattern=~s/\*/\[\^\/\]\+/g;
2831: $pattern=~s/\//\\\//g;
1.152 www 2832: if ($orguri=~/$pattern/) {
1.148 www 2833: $refuri=$ENV{$_};
2834: }
2835: }
1.191 harris41 2836: }
1.148 www 2837: }
1.232 www 2838:
1.148 www 2839: if ($refuri) {
1.152 www 2840: $refuri=&declutter($refuri);
1.232 www 2841: my ($match,$cond)=&is_on_map($refuri);
2842: if ($match) {
2843: my $refstatecond=$cond;
1.52 www 2844: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1.479 albertel 2845: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2846: $thisallowed.=$1;
1.53 www 2847: $uri=$refuri;
2848: $statecond=$refstatecond;
1.52 www 2849: }
2850: }
1.148 www 2851: }
1.29 www 2852: }
1.52 www 2853: }
1.29 www 2854:
1.52 www 2855: #
1.103 harris41 2856: # Gathered now: all privileges that could apply, and condition number
1.52 www 2857: #
2858: #
2859: # Full or no access?
2860: #
1.29 www 2861:
1.52 www 2862: if ($thisallowed=~/F/) {
2863: return 'F';
2864: }
1.29 www 2865:
1.52 www 2866: unless ($thisallowed) {
2867: return '';
2868: }
1.29 www 2869:
1.52 www 2870: # Restrictions exist, deal with them
2871: #
2872: # C:according to course preferences
2873: # R:according to resource settings
2874: # L:unless locked
2875: # X:according to user session state
2876: #
2877:
2878: # Possibly locked functionality, check all courses
1.54 www 2879: # Locks might take effect only after 10 minutes cache expiration for other
2880: # courses, and 2 minutes for current course
1.52 www 2881:
2882: my $envkey;
2883: if ($thisallowed=~/L/) {
2884: foreach $envkey (keys %ENV) {
1.54 www 2885: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
2886: my $courseid=$2;
2887: my $roleid=$1.'.'.$2;
1.92 www 2888: $courseid=~s/^\///;
1.54 www 2889: my $expiretime=600;
2890: if ($ENV{'request.role'} eq $roleid) {
2891: $expiretime=120;
2892: }
2893: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
2894: my $prefix='course.'.$cdom.'_'.$cnum.'.';
2895: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
2896: &coursedescription($courseid);
2897: }
1.479 albertel 2898: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
1.54 www 2899: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
2900: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 2901: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 2902: $ENV{'user.home'},
1.57 www 2903: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 2904: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 2905: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 2906: return '';
2907: }
2908: }
1.479 albertel 2909: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
1.54 www 2910: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
2911: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 2912: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 2913: $ENV{'user.home'},
1.57 www 2914: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 2915: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 2916: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 2917: return '';
2918: }
2919: }
2920: }
1.29 www 2921: }
1.52 www 2922: }
2923:
2924: #
2925: # Rest of the restrictions depend on selected course
2926: #
2927:
2928: unless ($ENV{'request.course.id'}) {
2929: return '1';
2930: }
1.29 www 2931:
1.52 www 2932: #
2933: # Now user is definitely in a course
2934: #
1.53 www 2935:
2936:
2937: # Course preferences
2938:
2939: if ($thisallowed=~/C/) {
1.54 www 2940: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.237 www 2941: my $unamedom=$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.54 www 2942: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1.479 albertel 2943: =~/\Q$rolecode\E/) {
1.57 www 2944: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
2945: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.237 www 2946: $ENV{'request.course.id'});
2947: return '';
2948: }
2949:
2950: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.users.denied'}
1.479 albertel 2951: =~/\Q$unamedom\E/) {
1.237 www 2952: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
2953: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
1.54 www 2954: $ENV{'request.course.id'});
2955: return '';
2956: }
1.53 www 2957: }
2958:
2959: # Resource preferences
2960:
2961: if ($thisallowed=~/R/) {
1.54 www 2962: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.479 albertel 2963: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
1.341 www 2964: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1.57 www 2965: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.341 www 2966: return '';
1.54 www 2967: }
1.53 www 2968: }
1.30 www 2969:
1.246 www 2970: # Restricted by state or randomout?
1.30 www 2971:
1.52 www 2972: if ($thisallowed=~/X/) {
1.247 www 2973: if ($ENV{'acc.randomout'}) {
1.579 albertel 2974: if (!$symb) { $symb=&symbread($uri,1); }
1.479 albertel 2975: if (($symb) && ($ENV{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
1.248 www 2976: return '';
2977: }
1.247 www 2978: }
2979: if (&condval($statecond)) {
1.52 www 2980: return '2';
2981: } else {
2982: return '';
2983: }
2984: }
1.30 www 2985:
1.52 www 2986: return 'F';
1.232 www 2987: }
2988:
2989: # --------------------------------------------------- Is a resource on the map?
2990:
2991: sub is_on_map {
2992: my $uri=&declutter(shift);
1.435 www 2993: $uri=~s/\.\d+\.(\w+)$/\.$1/;
1.232 www 2994: my @uriparts=split(/\//,$uri);
2995: my $filename=$uriparts[$#uriparts];
2996: my $pathname=$uri;
1.289 bowersj2 2997: $pathname=~s|/\Q$filename\E$||;
1.332 www 2998: $pathname=~s/^adm\/wrapper\///;
1.289 bowersj2 2999: #Trying to find the conditional for the file
1.232 www 3000: my $match=($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.289 bowersj2 3001: /\&\Q$filename\E\:([\d\|]+)\&/);
1.232 www 3002: if ($match) {
1.289 bowersj2 3003: return (1,$1);
3004: } else {
1.434 www 3005: return (0,0);
1.289 bowersj2 3006: }
1.12 www 3007: }
3008:
1.427 www 3009: # --------------------------------------------------------- Get symb from alias
3010:
3011: sub get_symb_from_alias {
3012: my $symb=shift;
3013: my ($map,$resid,$url)=&decode_symb($symb);
3014: # Already is a symb
3015: if ($url) { return $symb; }
3016: # Must be an alias
3017: my $aliassymb='';
3018: my %bighash;
3019: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
3020: &GDBM_READER(),0640)) {
3021: my $rid=$bighash{'mapalias_'.$symb};
3022: if ($rid) {
3023: my ($mapid,$resid)=split(/\./,$rid);
1.429 albertel 3024: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
3025: $resid,$bighash{'src_'.$rid});
1.427 www 3026: }
3027: untie %bighash;
3028: }
3029: return $aliassymb;
3030: }
3031:
1.12 www 3032: # ----------------------------------------------------------------- Define Role
3033:
3034: sub definerole {
3035: if (allowed('mcr','/')) {
3036: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.392 www 3037: foreach (split(':',$sysrole)) {
1.21 www 3038: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3039: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
3040: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
3041: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3042: return "refused:s:$crole&$cqual";
3043: }
3044: }
1.191 harris41 3045: }
1.392 www 3046: foreach (split(':',$domrole)) {
1.21 www 3047: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3048: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
3049: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
3050: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
1.21 www 3051: return "refused:d:$crole&$cqual";
3052: }
3053: }
1.191 harris41 3054: }
1.392 www 3055: foreach (split(':',$courole)) {
1.21 www 3056: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3057: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
3058: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
3059: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3060: return "refused:c:$crole&$cqual";
3061: }
3062: }
1.191 harris41 3063: }
1.12 www 3064: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
3065: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 3066: "rolesdef_$rolename=".
3067: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 3068: return reply($command,$ENV{'user.home'});
3069: } else {
3070: return 'refused';
3071: }
1.105 harris41 3072: }
3073:
3074: # ---------------- Make a metadata query against the network of library servers
3075:
3076: sub metadata_query {
1.244 matthew 3077: my ($query,$custom,$customshow,$server_array)=@_;
1.120 harris41 3078: my %rhash;
1.244 matthew 3079: my @server_list = (defined($server_array) ? @$server_array
3080: : keys(%libserv) );
3081: for my $server (@server_list) {
1.118 harris41 3082: unless ($custom or $customshow) {
3083: my $reply=&reply("querysend:".&escape($query),$server);
3084: $rhash{$server}=$reply;
3085: }
3086: else {
3087: my $reply=&reply("querysend:".&escape($query).':'.
3088: &escape($custom).':'.&escape($customshow),
3089: $server);
3090: $rhash{$server}=$reply;
3091: }
1.112 harris41 3092: }
1.118 harris41 3093: return \%rhash;
1.240 www 3094: }
3095:
3096: # ----------------------------------------- Send log queries and wait for reply
3097:
3098: sub log_query {
3099: my ($uname,$udom,$query,%filters)=@_;
3100: my $uhome=&homeserver($uname,$udom);
3101: if ($uhome eq 'no_host') { return 'error: no_host'; }
3102: my $uhost=$hostname{$uhome};
1.241 www 3103: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys %filters));
1.240 www 3104: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
3105: $uhome);
1.479 albertel 3106: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
1.242 www 3107: return get_query_reply($queryid);
3108: }
3109:
1.508 raeburn 3110: # ------- Request retrieval of institutional classlists for course(s)
1.506 raeburn 3111:
3112: sub fetch_enrollment_query {
1.511 raeburn 3113: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
1.508 raeburn 3114: my $homeserver;
1.547 raeburn 3115: my $maxtries = 1;
1.508 raeburn 3116: if ($context eq 'automated') {
3117: $homeserver = $perlvar{'lonHostID'};
1.547 raeburn 3118: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
1.508 raeburn 3119: } else {
3120: $homeserver = &homeserver($cnum,$dom);
3121: }
1.506 raeburn 3122: my $host=$hostname{$homeserver};
3123: my $cmd = '';
3124: foreach (keys %{$affiliatesref}) {
1.508 raeburn 3125: $cmd .= $_.'='.join(",",@{$$affiliatesref{$_}}).'%%';
1.506 raeburn 3126: }
3127: $cmd =~ s/%%$//;
3128: $cmd = &escape($cmd);
3129: my $query = 'fetchenrollment';
3130: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$ENV{'user.name'}.':'.$cmd,$homeserver);
1.526 raeburn 3131: unless ($queryid=~/^\Q$host\E\_/) {
3132: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
3133: return 'error: '.$queryid;
3134: }
1.506 raeburn 3135: my $reply = &get_query_reply($queryid);
1.547 raeburn 3136: my $tries = 1;
3137: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
3138: $reply = &get_query_reply($queryid);
3139: $tries ++;
3140: }
1.526 raeburn 3141: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1.547 raeburn 3142: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$ENV{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
1.526 raeburn 3143: } else {
1.515 raeburn 3144: my @responses = split/:/,$reply;
3145: if ($homeserver eq $perlvar{'lonHostID'}) {
3146: foreach (@responses) {
3147: my ($key,$value) = split/=/,$_;
3148: $$replyref{$key} = $value;
3149: }
3150: } else {
1.506 raeburn 3151: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
3152: foreach (@responses) {
3153: my ($key,$value) = split/=/,$_;
3154: $$replyref{$key} = $value;
3155: if ($value > 0) {
3156: foreach (@{$$affiliatesref{$key}}) {
3157: my $filename = $dom.'_'.$key.'_'.$_.'_classlist.xml';
3158: my $destname = $pathname.'/'.$filename;
3159: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
1.526 raeburn 3160: if ($xml_classlist =~ /^error/) {
3161: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
3162: } else {
1.506 raeburn 3163: if ( open(FILE,">$destname") ) {
3164: print FILE &unescape($xml_classlist);
3165: close(FILE);
1.526 raeburn 3166: } else {
3167: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
1.506 raeburn 3168: }
3169: }
3170: }
3171: }
3172: }
3173: }
3174: return 'ok';
3175: }
3176: return 'error';
3177: }
3178:
1.242 www 3179: sub get_query_reply {
3180: my $queryid=shift;
1.240 www 3181: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
3182: my $reply='';
3183: for (1..100) {
3184: sleep 2;
3185: if (-e $replyfile.'.end') {
1.448 albertel 3186: if (open(my $fh,$replyfile)) {
1.240 www 3187: $reply.=<$fh>;
1.448 albertel 3188: close($fh);
1.240 www 3189: } else { return 'error: reply_file_error'; }
1.242 www 3190: return &unescape($reply);
3191: }
1.240 www 3192: }
1.242 www 3193: return 'timeout:'.$queryid;
1.240 www 3194: }
3195:
3196: sub courselog_query {
1.241 www 3197: #
3198: # possible filters:
3199: # url: url or symb
3200: # username
3201: # domain
3202: # action: view, submit, grade
3203: # start: timestamp
3204: # end: timestamp
3205: #
1.240 www 3206: my (%filters)=@_;
3207: unless ($ENV{'request.course.id'}) { return 'no_course'; }
1.241 www 3208: if ($filters{'url'}) {
3209: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
3210: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
3211: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
3212: }
1.240 www 3213: my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
3214: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
3215: return &log_query($cname,$cdom,'courselog',%filters);
3216: }
3217:
3218: sub userlog_query {
3219: my ($uname,$udom,%filters)=@_;
3220: return &log_query($uname,$udom,'userlog',%filters);
1.12 www 3221: }
3222:
1.506 raeburn 3223: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
3224:
3225: sub auto_run {
1.508 raeburn 3226: my ($cnum,$cdom) = @_;
3227: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3228: my $response = &reply('autorun:'.$cdom,$homeserver);
1.506 raeburn 3229: return $response;
3230: }
3231:
3232: sub auto_get_sections {
1.508 raeburn 3233: my ($cnum,$cdom,$inst_coursecode) = @_;
3234: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3235: my @secs = ();
1.511 raeburn 3236: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
1.506 raeburn 3237: unless ($response eq 'refused') {
3238: @secs = split/:/,$response;
3239: }
3240: return @secs;
3241: }
3242:
3243: sub auto_new_course {
1.508 raeburn 3244: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
3245: my $homeserver = &homeserver($cnum,$cdom);
1.515 raeburn 3246: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
1.506 raeburn 3247: return $response;
3248: }
3249:
3250: sub auto_validate_courseID {
1.508 raeburn 3251: my ($cnum,$cdom,$inst_course_id) = @_;
3252: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3253: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
1.506 raeburn 3254: return $response;
3255: }
3256:
3257: sub auto_create_password {
1.508 raeburn 3258: my ($cnum,$cdom,$authparam) = @_;
3259: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3260: my $create_passwd = 0;
3261: my $authchk = '';
1.511 raeburn 3262: my $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
1.506 raeburn 3263: if ($response eq 'refused') {
3264: $authchk = 'refused';
3265: } else {
3266: ($authparam,$create_passwd,$authchk) = split/:/,$response;
3267: }
3268: return ($authparam,$create_passwd,$authchk);
3269: }
3270:
1.521 raeburn 3271: sub auto_instcode_format {
3272: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
3273: my $courses = '';
3274: my $homeserver;
3275: if ($caller eq 'global') {
1.584 raeburn 3276: foreach my $tryserver (keys %libserv) {
3277: if ($hostdom{$tryserver} eq $codedom) {
3278: $homeserver = $tryserver;
3279: last;
3280: }
3281: }
3282: if (($ENV{'user.name'}) && ($ENV{'user.domain'} eq $codedom)) {
3283: $homeserver = &homeserver($ENV{'user.name'},$codedom);
3284: }
1.521 raeburn 3285: } else {
3286: $homeserver = &homeserver($caller,$codedom);
3287: }
3288: foreach (keys %{$instcodes}) {
3289: $courses .= &escape($_).'='.&escape($$instcodes{$_}).'&';
3290: }
3291: chop($courses);
3292: my $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$homeserver);
3293: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
3294: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) = split/:/,$response;
3295: %{$codes} = &str2hash($codes_str);
3296: @{$codetitles} = &str2array($codetitles_str);
3297: %{$cat_titles} = &str2hash($cat_titles_str);
3298: %{$cat_order} = &str2hash($cat_order_str);
3299: return 'ok';
3300: }
3301: return $response;
3302: }
3303:
1.12 www 3304: # ------------------------------------------------------------------ Plain Text
3305:
3306: sub plaintext {
1.22 www 3307: my $short=shift;
1.414 www 3308: return &mt($prp{$short});
1.12 www 3309: }
3310:
3311: # ----------------------------------------------------------------- Assign Role
3312:
3313: sub assignrole {
1.357 www 3314: my ($udom,$uname,$url,$role,$end,$start,$deleteflag)=@_;
1.21 www 3315: my $mrole;
3316: if ($role =~ /^cr\//) {
1.393 www 3317: my $cwosec=$url;
3318: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
3319: unless (&allowed('ccr',$cwosec)) {
1.104 www 3320: &logthis('Refused custom assignrole: '.
3321: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
3322: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
3323: return 'refused';
3324: }
1.21 www 3325: $mrole='cr';
3326: } else {
1.82 www 3327: my $cwosec=$url;
1.83 www 3328: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.373 www 3329: unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) {
1.104 www 3330: &logthis('Refused 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=$role;
3336: }
3337: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
3338: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 3339: if ($end) { $command.='_'.$end; }
1.21 www 3340: if ($start) {
3341: if ($end) {
1.81 www 3342: $command.='_'.$start;
1.21 www 3343: } else {
1.81 www 3344: $command.='_0_'.$start;
1.21 www 3345: }
3346: }
1.357 www 3347: # actually delete
3348: if ($deleteflag) {
1.373 www 3349: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
1.357 www 3350: # modify command to delete the role
3351: $command="encrypt:rolesdel:$ENV{'user.domain'}:$ENV{'user.name'}:".
3352: "$udom:$uname:$url".'_'."$mrole";
1.373 www 3353: &logthis("$ENV{'user.name'} at $ENV{'user.domain'} deletes $mrole in $url for $uname at $udom");
1.357 www 3354: # set start and finish to negative values for userrolelog
3355: $start=-1;
3356: $end=-1;
3357: }
3358: }
3359: # send command
1.349 www 3360: my $answer=&reply($command,&homeserver($uname,$udom));
1.357 www 3361: # log new user role if status is ok
1.349 www 3362: if ($answer eq 'ok') {
3363: &userrolelog($mrole,$uname,$udom,$url,$start,$end);
3364: }
3365: return $answer;
1.169 harris41 3366: }
3367:
3368: # -------------------------------------------------- Modify user authentication
1.197 www 3369: # Overrides without validation
3370:
1.169 harris41 3371: sub modifyuserauth {
3372: my ($udom,$uname,$umode,$upass)=@_;
3373: my $uhome=&homeserver($uname,$udom);
1.197 www 3374: unless (&allowed('mau',$udom)) { return 'refused'; }
3375: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
1.272 matthew 3376: $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
3377: ' in domain '.$ENV{'request.role.domain'});
1.169 harris41 3378: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
3379: &escape($upass),$uhome);
1.197 www 3380: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
3381: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
3382: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
3383: &log($udom,,$uname,$uhome,
3384: 'Authentication changed by '.$ENV{'user.domain'}.', '.
3385: $ENV{'user.name'}.', '.$umode.
3386: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
1.169 harris41 3387: unless ($reply eq 'ok') {
1.197 www 3388: &logthis('Authentication mode error: '.$reply);
1.169 harris41 3389: return 'error: '.$reply;
3390: }
1.170 harris41 3391: return 'ok';
1.80 www 3392: }
3393:
1.81 www 3394: # --------------------------------------------------------------- Modify a user
1.80 www 3395:
1.81 www 3396: sub modifyuser {
1.206 matthew 3397: my ($udom, $uname, $uid,
3398: $umode, $upass, $first,
3399: $middle, $last, $gene,
1.387 www 3400: $forceid, $desiredhome, $email)=@_;
1.198 www 3401: $udom=~s/\W//g;
3402: $uname=~s/\W//g;
1.81 www 3403: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3404: $umode.', '.$first.', '.$middle.', '.
1.206 matthew 3405: $last.', '.$gene.'(forceid: '.$forceid.')'.
3406: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
3407: ' desiredhome not specified').
1.272 matthew 3408: ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
3409: ' in domain '.$ENV{'request.role.domain'});
1.230 stredwic 3410: my $uhome=&homeserver($uname,$udom,'true');
1.80 www 3411: # ----------------------------------------------------------------- Create User
1.406 albertel 3412: if (($uhome eq 'no_host') &&
3413: (($umode && $upass) || ($umode eq 'localauth'))) {
1.80 www 3414: my $unhome='';
1.209 matthew 3415: if (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) {
3416: $unhome = $desiredhome;
3417: } elsif($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1.80 www 3418: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.209 matthew 3419: } else { # load balancing routine for determining $unhome
1.80 www 3420: my $tryserver;
1.81 www 3421: my $loadm=10000000;
1.80 www 3422: foreach $tryserver (keys %libserv) {
3423: if ($hostdom{$tryserver} eq $udom) {
3424: my $answer=reply('load',$tryserver);
3425: if (($answer=~/\d+/) && ($answer<$loadm)) {
3426: $loadm=$answer;
3427: $unhome=$tryserver;
3428: }
3429: }
3430: }
3431: }
3432: if (($unhome eq '') || ($unhome eq 'no_host')) {
1.206 matthew 3433: return 'error: unable to find a home server for '.$uname.
3434: ' in domain '.$udom;
1.80 www 3435: }
3436: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
3437: &escape($upass),$unhome);
3438: unless ($reply eq 'ok') {
3439: return 'error: '.$reply;
3440: }
1.230 stredwic 3441: $uhome=&homeserver($uname,$udom,'true');
1.80 www 3442: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1.386 matthew 3443: return 'error: unable verify users home machine.';
1.80 www 3444: }
1.209 matthew 3445: } # End of creation of new user
1.80 www 3446: # ---------------------------------------------------------------------- Add ID
3447: if ($uid) {
3448: $uid=~tr/A-Z/a-z/;
3449: my %uidhash=&idrget($udom,$uname);
1.196 www 3450: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
3451: && (!$forceid)) {
1.80 www 3452: unless ($uid eq $uidhash{$uname}) {
1.386 matthew 3453: return 'error: user id "'.$uid.'" does not match '.
3454: 'current user id "'.$uidhash{$uname}.'".';
1.80 www 3455: }
3456: } else {
3457: &idput($udom,($uname => $uid));
3458: }
3459: }
3460: # -------------------------------------------------------------- Add names, etc
1.313 matthew 3461: my @tmp=&get('environment',
1.134 albertel 3462: ['firstname','middlename','lastname','generation'],
3463: $udom,$uname);
1.313 matthew 3464: my %names;
3465: if ($tmp[0] =~ m/^error:.*/) {
3466: %names=();
3467: } else {
3468: %names = @tmp;
3469: }
1.388 www 3470: #
3471: # Make sure to not trash student environment if instructor does not bother
3472: # to supply name and email information
3473: #
3474: if ($first) { $names{'firstname'} = $first; }
1.385 matthew 3475: if (defined($middle)) { $names{'middlename'} = $middle; }
1.388 www 3476: if ($last) { $names{'lastname'} = $last; }
1.385 matthew 3477: if (defined($gene)) { $names{'generation'} = $gene; }
1.592 www 3478: if ($email) {
3479: $email=~s/[^\w\@\.\-\,]//gs;
3480: if ($email=~/\@/) { $names{'notification'} = $email;
3481: $names{'critnotification'} = $email;
3482: $names{'permanentemail'} = $email; }
3483: }
1.134 albertel 3484: my $reply = &put('environment', \%names, $udom,$uname);
3485: if ($reply ne 'ok') { return 'error: '.$reply; }
1.81 www 3486: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3487: $umode.', '.$first.', '.$middle.', '.
3488: $last.', '.$gene.' by '.
3489: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.134 albertel 3490: return 'ok';
1.80 www 3491: }
3492:
1.81 www 3493: # -------------------------------------------------------------- Modify student
1.80 www 3494:
1.81 www 3495: sub modifystudent {
3496: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1.515 raeburn 3497: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
1.455 albertel 3498: if (!$cid) {
3499: unless ($cid=$ENV{'request.course.id'}) {
3500: return 'not_in_class';
3501: }
1.80 www 3502: }
3503: # --------------------------------------------------------------- Make the user
1.81 www 3504: my $reply=&modifyuser
1.209 matthew 3505: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
1.387 www 3506: $desiredhome,$email);
1.80 www 3507: unless ($reply eq 'ok') { return $reply; }
1.297 matthew 3508: # This will cause &modify_student_enrollment to get the uid from the
3509: # students environment
3510: $uid = undef if (!$forceid);
1.455 albertel 3511: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
1.515 raeburn 3512: $gene,$usec,$end,$start,$type,$locktype,$cid);
1.297 matthew 3513: return $reply;
3514: }
3515:
3516: sub modify_student_enrollment {
1.515 raeburn 3517: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid) = @_;
1.455 albertel 3518: my ($cdom,$cnum,$chome);
3519: if (!$cid) {
3520: unless ($cid=$ENV{'request.course.id'}) {
3521: return 'not_in_class';
3522: }
3523: $cdom=$ENV{'course.'.$cid.'.domain'};
3524: $cnum=$ENV{'course.'.$cid.'.num'};
3525: } else {
3526: ($cdom,$cnum)=split(/_/,$cid);
3527: }
3528: $chome=$ENV{'course.'.$cid.'.home'};
3529: if (!$chome) {
1.457 raeburn 3530: $chome=&homeserver($cnum,$cdom);
1.297 matthew 3531: }
1.455 albertel 3532: if (!$chome) { return 'unknown_course'; }
1.297 matthew 3533: # Make sure the user exists
1.81 www 3534: my $uhome=&homeserver($uname,$udom);
3535: if (($uhome eq '') || ($uhome eq 'no_host')) {
3536: return 'error: no such user';
3537: }
1.297 matthew 3538: # Get student data if we were not given enough information
3539: if (!defined($first) || $first eq '' ||
3540: !defined($last) || $last eq '' ||
3541: !defined($uid) || $uid eq '' ||
3542: !defined($middle) || $middle eq '' ||
3543: !defined($gene) || $gene eq '') {
1.294 matthew 3544: # They did not supply us with enough data to enroll the student, so
3545: # we need to pick up more information.
1.297 matthew 3546: my %tmp = &get('environment',
1.294 matthew 3547: ['firstname','middlename','lastname', 'generation','id']
1.297 matthew 3548: ,$udom,$uname);
3549:
1.455 albertel 3550: #foreach (keys(%tmp)) {
3551: # &logthis("key $_ = ".$tmp{$_});
3552: #}
1.294 matthew 3553: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
3554: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
3555: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
1.297 matthew 3556: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
1.294 matthew 3557: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
3558: }
1.556 albertel 3559: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
1.487 albertel 3560: my $reply=cput('classlist',
3561: {"$uname:$udom" =>
1.515 raeburn 3562: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
1.487 albertel 3563: $cdom,$cnum);
1.81 www 3564: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
3565: return 'error: '.$reply;
3566: }
1.297 matthew 3567: # Add student role to user
1.83 www 3568: my $uurl='/'.$cid;
1.81 www 3569: $uurl=~s/\_/\//g;
3570: if ($usec) {
3571: $uurl.='/'.$usec;
3572: }
3573: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 3574: }
3575:
1.556 albertel 3576: sub format_name {
3577: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
3578: my $name;
3579: if ($first ne 'lastname') {
3580: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
3581: } else {
3582: if ($lastname=~/\S/) {
3583: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
3584: $name=~s/\s+,/,/;
3585: } else {
3586: $name.= $firstname.' '.$middlename.' '.$generation;
3587: }
3588: }
3589: $name=~s/^\s+//;
3590: $name=~s/\s+$//;
3591: $name=~s/\s+/ /g;
3592: return $name;
3593: }
3594:
1.84 www 3595: # ------------------------------------------------- Write to course preferences
3596:
3597: sub writecoursepref {
3598: my ($courseid,%prefs)=@_;
3599: $courseid=~s/^\///;
3600: $courseid=~s/\_/\//g;
3601: my ($cdomain,$cnum)=split(/\//,$courseid);
3602: my $chome=homeserver($cnum,$cdomain);
3603: if (($chome eq '') || ($chome eq 'no_host')) {
3604: return 'error: no such course';
3605: }
3606: my $cstring='';
1.191 harris41 3607: foreach (keys %prefs) {
1.84 www 3608: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1.191 harris41 3609: }
1.84 www 3610: $cstring=~s/\&$//;
3611: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
3612: }
3613:
3614: # ---------------------------------------------------------- Make/modify course
3615:
3616: sub createcourse {
1.571 raeburn 3617: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner)=@_;
1.84 www 3618: $url=&declutter($url);
3619: my $cid='';
1.264 matthew 3620: unless (&allowed('ccc',$udom)) {
1.84 www 3621: return 'refused';
3622: }
3623: # ------------------------------------------------------------------- Create ID
3624: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
3625: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
3626: # ----------------------------------------------- Make sure that does not exist
1.230 stredwic 3627: my $uhome=&homeserver($uname,$udom,'true');
1.84 www 3628: unless (($uhome eq '') || ($uhome eq 'no_host')) {
3629: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
3630: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1.230 stredwic 3631: $uhome=&homeserver($uname,$udom,'true');
1.84 www 3632: unless (($uhome eq '') || ($uhome eq 'no_host')) {
3633: return 'error: unable to generate unique course-ID';
3634: }
3635: }
1.264 matthew 3636: # ------------------------------------------------ Check supplied server name
3637: $course_server = $ENV{'user.homeserver'} if (! defined($course_server));
3638: if (! exists($libserv{$course_server})) {
3639: return 'error:bad server name '.$course_server;
3640: }
1.84 www 3641: # ------------------------------------------------------------- Make the course
3642: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1.264 matthew 3643: $course_server);
1.84 www 3644: unless ($reply eq 'ok') { return 'error: '.$reply; }
1.230 stredwic 3645: $uhome=&homeserver($uname,$udom,'true');
1.84 www 3646: if (($uhome eq '') || ($uhome eq 'no_host')) {
3647: return 'error: no such course';
3648: }
1.271 www 3649: # ----------------------------------------------------------------- Course made
1.516 raeburn 3650: # log existence
3651: &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
1.571 raeburn 3652: ':'.&escape($inst_code).':'.&escape($course_owner),$uhome);
1.358 www 3653: &flushcourselogs();
3654: # set toplevel url
1.271 www 3655: my $topurl=$url;
3656: unless ($nonstandard) {
3657: # ------------------------------------------ For standard courses, make top url
3658: my $mapurl=&clutter($url);
1.278 www 3659: if ($mapurl eq '/res/') { $mapurl=''; }
1.271 www 3660: $ENV{'form.initmap'}=(<<ENDINITMAP);
3661: <map>
3662: <resource id="1" type="start"></resource>
3663: <resource id="2" src="$mapurl"></resource>
3664: <resource id="3" type="finish"></resource>
3665: <link index="1" from="1" to="2"></link>
3666: <link index="2" from="2" to="3"></link>
3667: </map>
3668: ENDINITMAP
3669: $topurl=&declutter(
3670: &finishuserfileupload($uname,$udom,$uhome,'initmap','default.sequence')
3671: );
3672: }
3673: # ----------------------------------------------------------- Write preferences
1.84 www 3674: &writecoursepref($udom.'_'.$uname,
3675: ('description' => $description,
1.271 www 3676: 'url' => $topurl));
1.84 www 3677: return '/'.$udom.'/'.$uname;
3678: }
3679:
1.21 www 3680: # ---------------------------------------------------------- Assign Custom Role
3681:
3682: sub assigncustomrole {
1.357 www 3683: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
1.21 www 3684: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1.357 www 3685: $end,$start,$deleteflag);
1.21 www 3686: }
3687:
3688: # ----------------------------------------------------------------- Revoke Role
3689:
3690: sub revokerole {
1.357 www 3691: my ($udom,$uname,$url,$role,$deleteflag)=@_;
1.21 www 3692: my $now=time;
1.357 www 3693: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
1.21 www 3694: }
3695:
3696: # ---------------------------------------------------------- Revoke Custom Role
3697:
3698: sub revokecustomrole {
1.357 www 3699: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
1.21 www 3700: my $now=time;
1.357 www 3701: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
3702: $deleteflag);
1.17 www 3703: }
3704:
1.533 banghart 3705: # ------------------------------------------------------------ Disk usage
1.535 albertel 3706: sub diskusage {
1.533 banghart 3707: my ($udom,$uname,$directoryRoot)=@_;
3708: $directoryRoot =~ s/\/$//;
1.535 albertel 3709: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
1.514 albertel 3710: return $listing;
1.512 banghart 3711: }
3712:
1.566 banghart 3713: sub is_locked {
3714: my ($file_name, $domain, $user) = @_;
3715: my @check;
3716: my $is_locked;
3717: push @check, $file_name;
3718: my %locked = &Apache::lonnet::get('file_permissions',\@check,
3719: $ENV{'user.domain'},$ENV{'user.name'});
3720: if (ref($locked{$file_name}) eq 'ARRAY') {
3721: $is_locked = 'true';
3722: } else {
3723: $is_locked = 'false';
3724: }
3725: }
3726:
1.559 banghart 3727: # ------------------------------------------------------------- Mark as Read Only
3728:
3729: sub mark_as_readonly {
3730: my ($domain,$user,$files,$what) = @_;
3731: my %current_permissions = &Apache::lonnet::dump('file_permissions',$domain,$user);
1.560 banghart 3732: foreach my $file (@{$files}) {
1.561 banghart 3733: push(@{$current_permissions{$file}},$what);
1.559 banghart 3734: }
1.560 banghart 3735: &Apache::lonnet::put('file_permissions',\%current_permissions,$domain,$user);
1.559 banghart 3736: return;
3737: }
3738:
1.572 banghart 3739: # ------------------------------------------------------------Save Selected Files
3740:
3741: sub save_selected_files {
3742: my ($user, $path, @files) = @_;
3743: my $filename = $user."savedfiles";
1.573 banghart 3744: my @other_files = &files_not_in_path($user, $path);
1.574 banghart 3745: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
1.573 banghart 3746: foreach my $file (@files) {
1.574 banghart 3747: print (OUT $ENV{'form.currentpath'}.$file."\n");
1.573 banghart 3748: }
3749: foreach my $file (@other_files) {
1.574 banghart 3750: print (OUT $file."\n");
1.572 banghart 3751: }
1.574 banghart 3752: close (OUT);
1.572 banghart 3753: return 'ok';
3754: }
3755:
1.574 banghart 3756: sub clear_selected_files {
3757: my ($user) = @_;
3758: my $filename = $user."savedfiles";
3759: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
3760: print (OUT undef);
3761: close (OUT);
3762: return ("ok");
3763: }
3764:
1.572 banghart 3765: sub files_in_path {
3766: my ($user, $path) = @_;
3767: my $filename = $user."savedfiles";
3768: my %return_files;
1.574 banghart 3769: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
1.573 banghart 3770: while (my $line_in = <IN>) {
1.574 banghart 3771: chomp ($line_in);
3772: my @paths_and_file = split (m!/!, $line_in);
3773: my $file_part = pop (@paths_and_file);
3774: my $path_part = join ('/', @paths_and_file);
1.573 banghart 3775: $path_part.='/';
3776: my $path_and_file = $path_part.$file_part;
3777: if ($path_part eq $path) {
3778: $return_files{$file_part}= 'selected';
3779: }
3780: }
1.574 banghart 3781: close (IN);
3782: return (\%return_files);
1.572 banghart 3783: }
3784:
3785: # called in portfolio select mode, to show files selected NOT in current directory
3786: sub files_not_in_path {
3787: my ($user, $path) = @_;
3788: my $filename = $user."savedfiles";
3789: my @return_files;
3790: my $path_part;
1.574 banghart 3791: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
1.572 banghart 3792: while (<IN>) {
3793: #ok, I know it's clunky, but I want it to work
3794: my @paths_and_file = split m!/!, $_;
1.574 banghart 3795: my $file_part = pop (@paths_and_file);
3796: chomp ($file_part);
3797: my $path_part = join ('/', @paths_and_file);
1.572 banghart 3798: $path_part .= '/';
3799: my $path_and_file = $path_part.$file_part;
3800: if ($path_part ne $path) {
1.574 banghart 3801: push (@return_files, ($path_and_file));
1.572 banghart 3802: }
3803: }
1.574 banghart 3804: close (OUT);
3805: return (@return_files);
1.572 banghart 3806: }
3807:
1.561 banghart 3808: #--------------------------------------------------------------Get Marked as Read Only
3809:
3810: sub get_marked_as_readonly {
3811: my ($domain,$user,$what) = @_;
3812: my %current_permissions = &Apache::lonnet::dump('file_permissions',$domain,$user);
1.563 banghart 3813: my @readonly_files;
3814: while (my ($file_name,$value) = each(%current_permissions)) {
1.561 banghart 3815: if (ref($value) eq "ARRAY"){
3816: foreach my $stored_what (@{$value}) {
3817: if ($stored_what eq $what) {
3818: push(@readonly_files, $file_name);
1.563 banghart 3819: } elsif (!defined($what)) {
3820: push(@readonly_files, $file_name);
1.561 banghart 3821: }
3822: }
3823: }
3824: }
3825: return @readonly_files;
3826: }
1.577 banghart 3827: #-----------------------------------------------------------Get Marked as Read Only Hash
1.561 banghart 3828:
1.577 banghart 3829: sub get_marked_as_readonly_hash {
3830: my ($domain,$user,$what) = @_;
3831: my %current_permissions = &Apache::lonnet::dump('file_permissions',$domain,$user);
3832: my %readonly_files;
3833: while (my ($file_name,$value) = each(%current_permissions)) {
3834: if (ref($value) eq "ARRAY"){
3835: foreach my $stored_what (@{$value}) {
3836: if ($stored_what eq $what) {
3837: $readonly_files{$file_name} = 'locked';
3838: } elsif (!defined($what)) {
3839: $readonly_files{$file_name} = 'locked';
3840: }
3841: }
3842: }
3843: }
3844: return %readonly_files;
3845: }
1.559 banghart 3846: # ------------------------------------------------------------ Unmark as Read Only
3847:
3848: sub unmark_as_readonly {
1.561 banghart 3849: # unmarks all files locked by $what
3850: # for portfolio submissions, $what contains $crsid and $symb
3851: my ($domain,$user,$what) = @_;
3852: my %current_permissions = &Apache::lonnet::dump('file_permissions',$domain,$user);
3853: my @readonly_files = &Apache::lonnet::get_marked_as_readonly($domain,$user,$what);
3854: foreach my $file(@readonly_files){
1.563 banghart 3855: my $current_locks = $current_permissions{$file};
3856: my @new_locks;
3857: my @del_keys;
3858: if (ref($current_locks) eq "ARRAY"){
3859: foreach my $locker (@{$current_locks}) {
3860: unless ($locker eq $what) {
3861: push(@new_locks, $what);
3862: }
3863: }
3864: if (@new_locks > 0) {
3865: $current_permissions{$file} = \@new_locks;
3866: } else {
3867: push(@del_keys, $file);
3868: &Apache::lonnet::del('file_permissions',\@del_keys, $domain, $user);
3869: delete $current_permissions{$file};
3870: }
3871: }
1.561 banghart 3872: }
3873: &Apache::lonnet::put('file_permissions',\%current_permissions,$domain,$user);
1.559 banghart 3874: return;
3875: }
1.512 banghart 3876:
1.17 www 3877: # ------------------------------------------------------------ Directory lister
3878:
3879: sub dirlist {
1.253 stredwic 3880: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
3881:
1.18 www 3882: $uri=~s/^\///;
3883: $uri=~s/\/$//;
1.253 stredwic 3884: my ($udom, $uname);
3885: (undef,$udom,$uname)=split(/\//,$uri);
3886: if(defined($userdomain)) {
3887: $udom = $userdomain;
3888: }
3889: if(defined($username)) {
3890: $uname = $username;
3891: }
3892:
3893: my $dirRoot = $perlvar{'lonDocRoot'};
3894: if(defined($alternateDirectoryRoot)) {
3895: $dirRoot = $alternateDirectoryRoot;
3896: $dirRoot =~ s/\/$//;
3897: }
3898:
3899: if($udom) {
3900: if($uname) {
1.605 matthew 3901: my $listing=reply('ls2:'.$dirRoot.'/'.$uri,
1.253 stredwic 3902: homeserver($uname,$udom));
1.605 matthew 3903: my @listing_results;
3904: if ($listing eq 'unknown_cmd') {
3905: $listing=reply('ls:'.$dirRoot.'/'.$uri,
3906: homeserver($uname,$udom));
3907: @listing_results = split(/:/,$listing);
3908: } else {
3909: @listing_results = map { &unescape($_); } split(/:/,$listing);
3910: }
3911: return @listing_results;
1.253 stredwic 3912: } elsif(!defined($alternateDirectoryRoot)) {
3913: my $tryserver;
3914: my %allusers=();
3915: foreach $tryserver (keys %libserv) {
3916: if($hostdom{$tryserver} eq $udom) {
1.605 matthew 3917: my $listing=reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
1.253 stredwic 3918: $udom, $tryserver);
1.605 matthew 3919: my @listing_results;
3920: if ($listing eq 'unknown_cmd') {
3921: $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
3922: $udom, $tryserver);
3923: @listing_results = split(/:/,$listing);
3924: } else {
3925: @listing_results =
3926: map { &unescape($_); } split(/:/,$listing);
3927: }
3928: if ($listing_results[0] ne 'no_such_dir' &&
3929: $listing_results[0] ne 'empty' &&
3930: $listing_results[0] ne 'con_lost') {
3931: foreach (@listing_results) {
1.253 stredwic 3932: my ($entry,@stat)=split(/&/,$_);
3933: $allusers{$entry}=1;
3934: }
3935: }
1.191 harris41 3936: }
1.253 stredwic 3937: }
3938: my $alluserstr='';
3939: foreach (sort keys %allusers) {
3940: $alluserstr.=$_.'&user:';
3941: }
3942: $alluserstr=~s/:$//;
3943: return split(/:/,$alluserstr);
3944: } else {
3945: my @emptyResults = ();
3946: push(@emptyResults, 'missing user name');
3947: return split(':',@emptyResults);
3948: }
3949: } elsif(!defined($alternateDirectoryRoot)) {
3950: my $tryserver;
3951: my %alldom=();
3952: foreach $tryserver (keys %libserv) {
3953: $alldom{$hostdom{$tryserver}}=1;
3954: }
3955: my $alldomstr='';
3956: foreach (sort keys %alldom) {
1.397 albertel 3957: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'/&domain:';
1.253 stredwic 3958: }
3959: $alldomstr=~s/:$//;
3960: return split(/:/,$alldomstr);
3961: } else {
3962: my @emptyResults = ();
3963: push(@emptyResults, 'missing domain');
3964: return split(':',@emptyResults);
1.275 stredwic 3965: }
3966: }
3967:
3968: # --------------------------------------------- GetFileTimestamp
3969: # This function utilizes dirlist and returns the date stamp for
3970: # when it was last modified. It will also return an error of -1
3971: # if an error occurs
3972:
1.410 matthew 3973: ##
3974: ## FIXME: This subroutine assumes its caller knows something about the
3975: ## directory structure of the home server for the student ($root).
3976: ## Not a good assumption to make. Since this is for looking up files
3977: ## in user directories, the full path should be constructed by lond, not
3978: ## whatever machine we request data from.
3979: ##
1.275 stredwic 3980: sub GetFileTimestamp {
3981: my ($studentDomain,$studentName,$filename,$root)=@_;
3982: $studentDomain=~s/\W//g;
3983: $studentName=~s/\W//g;
3984: my $subdir=$studentName.'__';
3985: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3986: my $proname="$studentDomain/$subdir/$studentName";
3987: $proname .= '/'.$filename;
1.375 matthew 3988: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
3989: $studentName, $root);
1.275 stredwic 3990: my @stats = split('&', $fileStat);
3991: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
1.375 matthew 3992: # @stats contains first the filename, then the stat output
3993: return $stats[10]; # so this is 10 instead of 9.
1.275 stredwic 3994: } else {
3995: return -1;
1.253 stredwic 3996: }
1.26 www 3997: }
3998:
3999: # -------------------------------------------------------- Value of a Condition
4000:
1.40 www 4001: sub directcondval {
4002: my $number=shift;
1.555 albertel 4003: if (!defined($ENV{'user.state.'.$ENV{'request.course.id'}})) {
4004: &Apache::lonuserstate::evalstate();
4005: }
1.40 www 4006: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
4007: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
4008: } else {
4009: return 2;
4010: }
4011: }
4012:
1.26 www 4013: sub condval {
4014: my $condidx=shift;
4015: my $result=0;
1.54 www 4016: my $allpathcond='';
1.191 harris41 4017: foreach (split(/\|/,$condidx)) {
1.54 www 4018: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
4019: $allpathcond.=
4020: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
4021: }
1.191 harris41 4022: }
1.54 www 4023: $allpathcond=~s/\|$//;
1.33 www 4024: if ($ENV{'request.course.id'}) {
1.54 www 4025: if ($allpathcond) {
1.26 www 4026: my $operand='|';
4027: my @stack;
1.191 harris41 4028: foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {
1.26 www 4029: if ($_ eq '(') {
4030: push @stack,($operand,$result)
4031: } elsif ($_ eq ')') {
4032: my $before=pop @stack;
4033: if (pop @stack eq '&') {
4034: $result=$result>$before?$before:$result;
4035: } else {
4036: $result=$result>$before?$result:$before;
4037: }
4038: } elsif (($_ eq '&') || ($_ eq '|')) {
4039: $operand=$_;
4040: } else {
1.40 www 4041: my $new=directcondval($_);
1.26 www 4042: if ($operand eq '&') {
4043: $result=$result>$new?$new:$result;
4044: } else {
4045: $result=$result>$new?$result:$new;
1.191 harris41 4046: }
1.26 www 4047: }
1.191 harris41 4048: }
1.26 www 4049: }
4050: }
4051: return $result;
1.421 albertel 4052: }
4053:
4054: # ---------------------------------------------------- Devalidate courseresdata
4055:
4056: sub devalidatecourseresdata {
4057: my ($coursenum,$coursedomain)=@_;
4058: my $hashid=$coursenum.':'.$coursedomain;
1.599 albertel 4059: &devalidate_cache_new('courseres',$hashid);
1.28 www 4060: }
4061:
1.200 www 4062: # --------------------------------------------------- Course Resourcedata Query
4063:
4064: sub courseresdata {
4065: my ($coursenum,$coursedomain,@which)=@_;
4066: my $coursehom=&homeserver($coursenum,$coursedomain);
4067: my $hashid=$coursenum.':'.$coursedomain;
1.599 albertel 4068: my ($result,$cached)=&is_cached_new('courseres',$hashid);
1.417 albertel 4069: unless (defined($cached)) {
1.251 albertel 4070: my %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
1.417 albertel 4071: $result=\%dumpreply;
1.251 albertel 4072: my ($tmp) = keys(%dumpreply);
4073: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
1.599 albertel 4074: &do_cache_new('courseres',$hashid,$result,600);
1.306 albertel 4075: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
4076: return $tmp;
1.416 albertel 4077: } elsif ($tmp =~ /^(error)/) {
1.417 albertel 4078: $result=undef;
1.599 albertel 4079: &do_cache_new('courseres',$hashid,$result,600);
1.250 albertel 4080: }
4081: }
1.251 albertel 4082: foreach my $item (@which) {
1.417 albertel 4083: if (defined($result->{$item})) {
4084: return $result->{$item};
1.251 albertel 4085: }
1.250 albertel 4086: }
1.291 albertel 4087: return undef;
1.200 www 4088: }
4089:
1.379 matthew 4090: #
4091: # EXT resource caching routines
4092: #
4093:
4094: sub clear_EXT_cache_status {
1.383 albertel 4095: &delenv('cache.EXT.');
1.379 matthew 4096: }
4097:
4098: sub EXT_cache_status {
4099: my ($target_domain,$target_user) = @_;
1.383 albertel 4100: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.389 www 4101: if (exists($ENV{$cachename}) && ($ENV{$cachename}+600) > time) {
1.379 matthew 4102: # We know already the user has no data
4103: return 1;
4104: } else {
4105: return 0;
4106: }
4107: }
4108:
4109: sub EXT_cache_set {
4110: my ($target_domain,$target_user) = @_;
1.383 albertel 4111: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.379 matthew 4112: &appenv($cachename => time);
4113: }
4114:
1.28 www 4115: # --------------------------------------------------------- Value of a Variable
1.58 www 4116: sub EXT {
1.395 albertel 4117: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
1.218 albertel 4118:
1.68 www 4119: unless ($varname) { return ''; }
1.218 albertel 4120: #get real user name/domain, courseid and symb
4121: my $courseid;
1.359 albertel 4122: my $publicuser;
1.427 www 4123: if ($symbparm) {
4124: $symbparm=&get_symb_from_alias($symbparm);
4125: }
1.218 albertel 4126: if (!($uname && $udom)) {
1.360 albertel 4127: (my $cursymb,$courseid,$udom,$uname,$publicuser)=
1.378 matthew 4128: &Apache::lonxml::whichuser($symbparm);
1.218 albertel 4129: if (!$symbparm) { $symbparm=$cursymb; }
4130: } else {
4131: $courseid=$ENV{'request.course.id'};
4132: }
1.48 www 4133: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
4134: my $rest;
1.320 albertel 4135: if (defined($therest[0])) {
1.48 www 4136: $rest=join('.',@therest);
4137: } else {
4138: $rest='';
4139: }
1.320 albertel 4140:
1.57 www 4141: my $qualifierrest=$qualifier;
4142: if ($rest) { $qualifierrest.='.'.$rest; }
4143: my $spacequalifierrest=$space;
4144: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 4145: if ($realm eq 'user') {
1.48 www 4146: # --------------------------------------------------------------- user.resource
4147: if ($space eq 'resource') {
1.335 albertel 4148: if (defined($Apache::lonhomework::parsing_a_problem)) {
4149: return $Apache::lonhomework::history{$qualifierrest};
4150: } else {
1.359 albertel 4151: my %restored;
4152: if ($publicuser || $ENV{'request.state'} eq 'construct') {
4153: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
4154: } else {
4155: %restored=&restore($symbparm,$courseid,$udom,$uname);
4156: }
1.335 albertel 4157: return $restored{$qualifierrest};
4158: }
1.48 www 4159: # ----------------------------------------------------------------- user.access
4160: } elsif ($space eq 'access') {
1.218 albertel 4161: # FIXME - not supporting calls for a specific user
1.48 www 4162: return &allowed($qualifier,$rest);
4163: # ------------------------------------------ user.preferences, user.environment
4164: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.218 albertel 4165: if (($uname eq $ENV{'user.name'}) &&
4166: ($udom eq $ENV{'user.domain'})) {
4167: return $ENV{join('.',('environment',$qualifierrest))};
4168: } else {
1.359 albertel 4169: my %returnhash;
4170: if (!$publicuser) {
4171: %returnhash=&userenvironment($udom,$uname,
4172: $qualifierrest);
4173: }
1.218 albertel 4174: return $returnhash{$qualifierrest};
4175: }
1.48 www 4176: # ----------------------------------------------------------------- user.course
4177: } elsif ($space eq 'course') {
1.218 albertel 4178: # FIXME - not supporting calls for a specific user
1.48 www 4179: return $ENV{join('.',('request.course',$qualifier))};
4180: # ------------------------------------------------------------------- user.role
4181: } elsif ($space eq 'role') {
1.218 albertel 4182: # FIXME - not supporting calls for a specific user
1.48 www 4183: my ($role,$where)=split(/\./,$ENV{'request.role'});
4184: if ($qualifier eq 'value') {
4185: return $role;
4186: } elsif ($qualifier eq 'extent') {
4187: return $where;
4188: }
4189: # ----------------------------------------------------------------- user.domain
4190: } elsif ($space eq 'domain') {
1.218 albertel 4191: return $udom;
1.48 www 4192: # ------------------------------------------------------------------- user.name
4193: } elsif ($space eq 'name') {
1.218 albertel 4194: return $uname;
1.48 www 4195: # ---------------------------------------------------- Any other user namespace
1.29 www 4196: } else {
1.359 albertel 4197: my %reply;
4198: if (!$publicuser) {
4199: %reply=&get($space,[$qualifierrest],$udom,$uname);
4200: }
4201: return $reply{$qualifierrest};
1.48 www 4202: }
1.236 www 4203: } elsif ($realm eq 'query') {
4204: # ---------------------------------------------- pull stuff out of query string
1.384 albertel 4205: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
4206: [$spacequalifierrest]);
1.376 albertel 4207: return $ENV{'form.'.$spacequalifierrest};
1.236 www 4208: } elsif ($realm eq 'request') {
1.48 www 4209: # ------------------------------------------------------------- request.browser
4210: if ($space eq 'browser') {
1.430 www 4211: if ($qualifier eq 'textremote') {
4212: if (&mt('textual_remote_display') eq 'on') {
4213: return 1;
4214: } else {
4215: return 0;
4216: }
4217: } else {
4218: return $ENV{'browser.'.$qualifier};
4219: }
1.57 www 4220: # ------------------------------------------------------------ request.filename
4221: } else {
4222: return $ENV{'request.'.$spacequalifierrest};
1.29 www 4223: }
1.28 www 4224: } elsif ($realm eq 'course') {
1.48 www 4225: # ---------------------------------------------------------- course.description
1.218 albertel 4226: return $ENV{'course.'.$courseid.'.'.$spacequalifierrest};
1.57 www 4227: } elsif ($realm eq 'resource') {
1.165 www 4228:
1.395 albertel 4229: my $section;
1.359 albertel 4230: if (defined($courseid) && $courseid eq $ENV{'request.course.id'}) {
1.539 albertel 4231: if (!$symbparm) { $symbparm=&symbread(); }
4232: }
1.593 albertel 4233: my ($courselevelm,$courselevel);
1.539 albertel 4234: if ($symbparm && defined($courseid) &&
4235: $courseid eq $ENV{'request.course.id'}) {
1.165 www 4236:
1.218 albertel 4237: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
1.165 www 4238:
1.60 www 4239: # ----------------------------------------------------- Cascading lookup scheme
1.218 albertel 4240: my $symbp=$symbparm;
1.409 www 4241: my $mapp=(&decode_symb($symbp))[0];
1.218 albertel 4242:
4243: my $symbparm=$symbp.'.'.$spacequalifierrest;
4244: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
4245:
4246: if (($ENV{'user.name'} eq $uname) &&
4247: ($ENV{'user.domain'} eq $udom)) {
1.255 albertel 4248: $section=$ENV{'request.course.sec'};
1.218 albertel 4249: } else {
1.539 albertel 4250: if (! defined($usection)) {
1.551 albertel 4251: $section=&getsection($udom,$uname,$courseid);
1.539 albertel 4252: } else {
4253: $section = $usection;
4254: }
1.218 albertel 4255: }
4256:
4257: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
4258: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
4259: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
4260:
1.593 albertel 4261: $courselevel=$courseid.'.'.$spacequalifierrest;
1.218 albertel 4262: my $courselevelr=$courseid.'.'.$symbparm;
1.593 albertel 4263: $courselevelm=$courseid.'.'.$mapparm;
1.69 www 4264:
1.60 www 4265: # ----------------------------------------------------------- first, check user
1.379 matthew 4266: #most student don\'t have any data set, check if there is some data
4267: if (! &EXT_cache_status($udom,$uname)) {
1.420 albertel 4268: my $hashid="$udom:$uname";
1.599 albertel 4269: my ($result,$cached)=&is_cached_new('userres',$hashid);
1.454 albertel 4270: if (!defined($cached)) {
4271: my %resourcedata=&dump('resourcedata',$udom,$uname);
1.420 albertel 4272: $result=\%resourcedata;
1.599 albertel 4273: &do_cache_new('userres',$hashid,$result);
1.420 albertel 4274: }
4275: my ($tmp)=keys(%$result);
1.308 albertel 4276: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
1.420 albertel 4277: if ($$result{$courselevelr}) {
4278: return $$result{$courselevelr}; }
4279: if ($$result{$courselevelm}) {
4280: return $$result{$courselevelm}; }
4281: if ($$result{$courselevel}) {
4282: return $$result{$courselevel}; }
1.308 albertel 4283: } else {
1.459 albertel 4284: #error 2 occurs when the .db doesn't exist
4285: if ($tmp!~/error: 2 /) {
1.308 albertel 4286: &logthis("<font color=blue>WARNING:".
4287: " Trying to get resource data for ".
4288: $uname." at ".$udom.": ".
4289: $tmp."</font>");
1.459 albertel 4290: } elsif ($tmp=~/error: 2 /) {
1.539 albertel 4291: &EXT_cache_set($udom,$uname);
1.308 albertel 4292: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
4293: return $tmp;
4294: }
1.218 albertel 4295: }
4296: }
1.95 www 4297:
1.594 albertel 4298: # ------------------------------------------------ second, check some of course
1.96 www 4299:
1.218 albertel 4300: my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},
1.539 albertel 4301: $ENV{'course.'.$courseid.'.domain'},
4302: ($seclevelr,$seclevelm,$seclevel,
1.593 albertel 4303: $courselevelr));
1.287 albertel 4304: if (defined($coursereply)) { return $coursereply; }
1.200 www 4305:
1.60 www 4306: # ------------------------------------------------------ third, check map parms
1.218 albertel 4307: my %parmhash=();
4308: my $thisparm='';
4309: if (tie(%parmhash,'GDBM_File',
4310: $ENV{'request.course.fn'}.'_parms.db',
1.256 albertel 4311: &GDBM_READER(),0640)) {
1.218 albertel 4312: $thisparm=$parmhash{$symbparm};
4313: untie(%parmhash);
4314: }
4315: if ($thisparm) { return $thisparm; }
4316: }
1.594 albertel 4317: # ------------------------------------------ fourth, look in resource metadata
1.71 www 4318:
1.218 albertel 4319: $spacequalifierrest=~s/\./\_/;
1.282 albertel 4320: my $filename;
4321: if (!$symbparm) { $symbparm=&symbread(); }
4322: if ($symbparm) {
1.409 www 4323: $filename=(&decode_symb($symbparm))[2];
1.282 albertel 4324: } else {
4325: $filename=$ENV{'request.filename'};
4326: }
4327: my $metadata=&metadata($filename,$spacequalifierrest);
1.288 albertel 4328: if (defined($metadata)) { return $metadata; }
1.282 albertel 4329: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
1.288 albertel 4330: if (defined($metadata)) { return $metadata; }
1.142 www 4331:
1.594 albertel 4332: # ---------------------------------------------- fourth, look in rest pf course
1.593 albertel 4333: if ($symbparm && defined($courseid) &&
4334: $courseid eq $ENV{'request.course.id'}) {
4335: my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},
4336: $ENV{'course.'.$courseid.'.domain'},
4337: ($courselevelm,$courselevel));
4338: if (defined($coursereply)) { return $coursereply; }
4339: }
1.145 www 4340: # ------------------------------------------------------------------ Cascade up
1.218 albertel 4341: unless ($space eq '0') {
1.336 albertel 4342: my @parts=split(/_/,$space);
4343: my $id=pop(@parts);
4344: my $part=join('_',@parts);
4345: if ($part eq '') { $part='0'; }
4346: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
1.395 albertel 4347: $symbparm,$udom,$uname,$section,1);
1.337 albertel 4348: if (defined($partgeneral)) { return $partgeneral; }
1.218 albertel 4349: }
1.395 albertel 4350: if ($recurse) { return undef; }
4351: my $pack_def=&packages_tab_default($filename,$varname);
4352: if (defined($pack_def)) { return $pack_def; }
1.71 www 4353:
1.48 www 4354: # ---------------------------------------------------- Any other user namespace
4355: } elsif ($realm eq 'environment') {
4356: # ----------------------------------------------------------------- environment
1.219 albertel 4357: if (($uname eq $ENV{'user.name'})&&($udom eq $ENV{'user.domain'})) {
4358: return $ENV{'environment.'.$spacequalifierrest};
4359: } else {
4360: my %returnhash=&userenvironment($udom,$uname,
4361: $spacequalifierrest);
4362: return $returnhash{$spacequalifierrest};
4363: }
1.28 www 4364: } elsif ($realm eq 'system') {
1.48 www 4365: # ----------------------------------------------------------------- system.time
4366: if ($space eq 'time') {
4367: return time;
4368: }
1.28 www 4369: }
1.48 www 4370: return '';
1.61 www 4371: }
4372:
1.395 albertel 4373: sub packages_tab_default {
4374: my ($uri,$varname)=@_;
4375: my (undef,$part,$name)=split(/\./,$varname);
4376: my $packages=&metadata($uri,'packages');
4377: foreach my $package (split(/,/,$packages)) {
4378: my ($pack_type,$pack_part)=split(/_/,$package,2);
1.468 albertel 4379: if (defined($packagetab{"$pack_type&$name&default"})) {
4380: return $packagetab{"$pack_type&$name&default"};
4381: }
1.585 albertel 4382: if ($pack_type eq 'part') { $pack_part='0'; }
1.468 albertel 4383: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
4384: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
1.395 albertel 4385: }
4386: }
4387: return undef;
4388: }
4389:
1.334 albertel 4390: sub add_prefix_and_part {
4391: my ($prefix,$part)=@_;
4392: my $keyroot;
4393: if (defined($prefix) && $prefix !~ /^__/) {
4394: # prefix that has a part already
4395: $keyroot=$prefix;
4396: } elsif (defined($prefix)) {
4397: # prefix that is missing a part
4398: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
4399: } else {
4400: # no prefix at all
4401: if (defined($part)) { $keyroot='_'.$part; }
4402: }
4403: return $keyroot;
4404: }
4405:
1.71 www 4406: # ---------------------------------------------------------------- Get metadata
4407:
1.599 albertel 4408: my %metaentry;
1.71 www 4409: sub metadata {
1.176 www 4410: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
1.71 www 4411: $uri=&declutter($uri);
1.288 albertel 4412: # if it is a non metadata possible uri return quickly
1.529 albertel 4413: if (($uri eq '') ||
4414: (($uri =~ m|^/*adm/|) &&
4415: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
1.423 albertel 4416: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
1.489 albertel 4417: ($uri =~ m|home/[^/]+/public_html/|)) {
1.468 albertel 4418: return undef;
1.288 albertel 4419: }
1.73 www 4420: my $filename=$uri;
4421: $uri=~s/\.meta$//;
1.172 www 4422: #
4423: # Is the metadata already cached?
1.177 www 4424: # Look at timestamp of caching
1.172 www 4425: # Everything is cached by the main uri, libraries are never directly cached
4426: #
1.428 albertel 4427: if (!defined($liburi)) {
1.599 albertel 4428: my ($result,$cached)=&is_cached_new('meta',$uri);
1.428 albertel 4429: if (defined($cached)) { return $result->{':'.$what}; }
4430: }
4431: {
1.172 www 4432: #
4433: # Is this a recursive call for a library?
4434: #
1.599 albertel 4435: # if (! exists($metacache{$uri})) {
4436: # $metacache{$uri}={};
4437: # }
1.171 www 4438: if ($liburi) {
4439: $liburi=&declutter($liburi);
4440: $filename=$liburi;
1.401 bowersj2 4441: } else {
1.599 albertel 4442: &devalidate_cache_new('meta',$uri);
4443: undef(%metaentry);
1.401 bowersj2 4444: }
1.140 www 4445: my %metathesekeys=();
1.73 www 4446: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
1.489 albertel 4447: my $metastring;
4448: if ($uri !~ m|^uploaded/|) {
1.543 albertel 4449: my $file=&filelocation('',&clutter($filename));
1.599 albertel 4450: #push(@{$metaentry{$uri.'.file'}},$file);
1.543 albertel 4451: $metastring=&getfile($file);
1.489 albertel 4452: }
1.208 albertel 4453: my $parser=HTML::LCParser->new(\$metastring);
1.71 www 4454: my $token;
1.140 www 4455: undef %metathesekeys;
1.71 www 4456: while ($token=$parser->get_token) {
1.339 albertel 4457: if ($token->[0] eq 'S') {
4458: if (defined($token->[2]->{'package'})) {
1.172 www 4459: #
4460: # This is a package - get package info
4461: #
1.339 albertel 4462: my $package=$token->[2]->{'package'};
4463: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
4464: if (defined($token->[2]->{'id'})) {
4465: $keyroot.='_'.$token->[2]->{'id'};
4466: }
1.599 albertel 4467: if ($metaentry{':packages'}) {
4468: $metaentry{':packages'}.=','.$package.$keyroot;
1.339 albertel 4469: } else {
1.599 albertel 4470: $metaentry{':packages'}=$package.$keyroot;
1.339 albertel 4471: }
4472: foreach (keys %packagetab) {
1.432 albertel 4473: my $part=$keyroot;
4474: $part=~s/^\_//;
4475: if ($_=~/^\Q$package\E\&/ ||
4476: $_=~/^\Q$package\E_0\&/) {
1.339 albertel 4477: my ($pack,$name,$subp)=split(/\&/,$_);
1.395 albertel 4478: # ignore package.tab specified default values
4479: # here &package_tab_default() will fetch those
4480: if ($subp eq 'default') { next; }
1.339 albertel 4481: my $value=$packagetab{$_};
1.432 albertel 4482: my $unikey;
4483: if ($pack =~ /_0$/) {
4484: $unikey='parameter_0_'.$name;
4485: $part=0;
4486: } else {
4487: $unikey='parameter'.$keyroot.'_'.$name;
4488: }
1.339 albertel 4489: if ($subp eq 'display') {
4490: $value.=' [Part: '.$part.']';
4491: }
1.599 albertel 4492: $metaentry{':'.$unikey.'.part'}=$part;
1.395 albertel 4493: $metathesekeys{$unikey}=1;
1.599 albertel 4494: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
4495: $metaentry{':'.$unikey.'.'.$subp}=$value;
1.339 albertel 4496: }
1.599 albertel 4497: if (defined($metaentry{':'.$unikey.'.default'})) {
4498: $metaentry{':'.$unikey}=
4499: $metaentry{':'.$unikey.'.default'};
1.356 albertel 4500: }
1.339 albertel 4501: }
4502: }
4503: } else {
1.172 www 4504: #
4505: # This is not a package - some other kind of start tag
1.339 albertel 4506: #
4507: my $entry=$token->[1];
4508: my $unikey;
4509: if ($entry eq 'import') {
4510: $unikey='';
4511: } else {
4512: $unikey=$entry;
4513: }
4514: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
4515:
4516: if (defined($token->[2]->{'id'})) {
4517: $unikey.='_'.$token->[2]->{'id'};
4518: }
1.175 www 4519:
1.339 albertel 4520: if ($entry eq 'import') {
1.175 www 4521: #
4522: # Importing a library here
1.339 albertel 4523: #
4524: if ($depthcount<20) {
4525: my $location=$parser->get_text('/import');
4526: my $dir=$filename;
4527: $dir=~s|[^/]*$||;
4528: $location=&filelocation($dir,$location);
4529: foreach (sort(split(/\,/,&metadata($uri,'keys',
4530: $location,$unikey,
4531: $depthcount+1)))) {
1.599 albertel 4532: $metaentry{':'.$_}=$metaentry{':'.$_};
1.339 albertel 4533: $metathesekeys{$_}=1;
4534: }
4535: }
4536: } else {
4537:
4538: if (defined($token->[2]->{'name'})) {
4539: $unikey.='_'.$token->[2]->{'name'};
4540: }
4541: $metathesekeys{$unikey}=1;
4542: foreach (@{$token->[3]}) {
1.599 albertel 4543: $metaentry{':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.339 albertel 4544: }
4545: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
1.599 albertel 4546: my $default=$metaentry{':'.$unikey.'.default'};
1.339 albertel 4547: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
4548: # only ws inside the tag, and not in default, so use default
4549: # as value
1.599 albertel 4550: $metaentry{':'.$unikey}=$default;
1.339 albertel 4551: } else {
1.321 albertel 4552: # either something interesting inside the tag or default
4553: # uninteresting
1.599 albertel 4554: $metaentry{':'.$unikey}=$internaltext;
1.339 albertel 4555: }
1.172 www 4556: # end of not-a-package not-a-library import
1.339 albertel 4557: }
1.172 www 4558: # end of not-a-package start tag
1.339 albertel 4559: }
1.172 www 4560: # the next is the end of "start tag"
1.339 albertel 4561: }
4562: }
1.483 albertel 4563: my ($extension) = ($uri =~ /\.(\w+)$/);
4564: foreach my $key (sort(keys(%packagetab))) {
4565: #&logthis("extsion1 $extension $key !!");
4566: #no specific packages #how's our extension
4567: if ($key!~/^extension_\Q$extension\E&/) { next; }
1.488 albertel 4568: &metadata_create_package_def($uri,$key,'extension_'.$extension,
1.483 albertel 4569: \%metathesekeys);
4570: }
1.599 albertel 4571: if (!exists($metaentry{':packages'})) {
1.483 albertel 4572: foreach my $key (sort(keys(%packagetab))) {
4573: #no specific packages well let's get default then
4574: if ($key!~/^default&/) { next; }
1.488 albertel 4575: &metadata_create_package_def($uri,$key,'default',
1.483 albertel 4576: \%metathesekeys);
4577: }
4578: }
1.338 www 4579: # are there custom rights to evaluate
1.599 albertel 4580: if ($metaentry{':copyright'} eq 'custom') {
1.339 albertel 4581:
1.338 www 4582: #
4583: # Importing a rights file here
1.339 albertel 4584: #
4585: unless ($depthcount) {
1.599 albertel 4586: my $location=$metaentry{':customdistributionfile'};
1.339 albertel 4587: my $dir=$filename;
4588: $dir=~s|[^/]*$||;
4589: $location=&filelocation($dir,$location);
4590: foreach (sort(split(/\,/,&metadata($uri,'keys',
4591: $location,'_rights',
4592: $depthcount+1)))) {
1.599 albertel 4593: #$metaentry{':'.$_}=$metacache{$uri}->{':'.$_};
1.339 albertel 4594: $metathesekeys{$_}=1;
4595: }
4596: }
4597: }
1.599 albertel 4598: $metaentry{':keys'}=join(',',keys %metathesekeys);
4599: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
4600: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
4601: &do_cache_new('meta',$uri,\%metaentry);
1.177 www 4602: # this is the end of "was not already recently cached
1.71 www 4603: }
1.599 albertel 4604: return $metaentry{':'.$what};
1.261 albertel 4605: }
4606:
1.488 albertel 4607: sub metadata_create_package_def {
1.483 albertel 4608: my ($uri,$key,$package,$metathesekeys)=@_;
4609: my ($pack,$name,$subp)=split(/\&/,$key);
4610: if ($subp eq 'default') { next; }
4611:
1.599 albertel 4612: if (defined($metaentry{':packages'})) {
4613: $metaentry{':packages'}.=','.$package;
1.483 albertel 4614: } else {
1.599 albertel 4615: $metaentry{':packages'}=$package;
1.483 albertel 4616: }
4617: my $value=$packagetab{$key};
4618: my $unikey;
4619: $unikey='parameter_0_'.$name;
1.599 albertel 4620: $metaentry{':'.$unikey.'.part'}=0;
1.483 albertel 4621: $$metathesekeys{$unikey}=1;
1.599 albertel 4622: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
4623: $metaentry{':'.$unikey.'.'.$subp}=$value;
1.483 albertel 4624: }
1.599 albertel 4625: if (defined($metaentry{':'.$unikey.'.default'})) {
4626: $metaentry{':'.$unikey}=
4627: $metaentry{':'.$unikey.'.default'};
1.483 albertel 4628: }
4629: }
4630:
1.261 albertel 4631: sub metadata_generate_part0 {
4632: my ($metadata,$metacache,$uri) = @_;
4633: my %allnames;
4634: foreach my $metakey (sort keys %$metadata) {
4635: if ($metakey=~/^parameter\_(.*)/) {
1.428 albertel 4636: my $part=$$metacache{':'.$metakey.'.part'};
4637: my $name=$$metacache{':'.$metakey.'.name'};
1.356 albertel 4638: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
1.261 albertel 4639: $allnames{$name}=$part;
4640: }
4641: }
4642: }
4643: foreach my $name (keys(%allnames)) {
4644: $$metadata{"parameter_0_$name"}=1;
1.428 albertel 4645: my $key=":parameter_0_$name";
1.261 albertel 4646: $$metacache{"$key.part"}='0';
4647: $$metacache{"$key.name"}=$name;
1.428 albertel 4648: $$metacache{"$key.type"}=$$metacache{':parameter_'.
1.261 albertel 4649: $allnames{$name}.'_'.$name.
4650: '.type'};
1.428 albertel 4651: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
1.261 albertel 4652: '.display'};
4653: my $expr='\\[Part: '.$allnames{$name}.'\\]';
1.479 albertel 4654: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
1.261 albertel 4655: $$metacache{"$key.display"}=$olddis;
4656: }
1.71 www 4657: }
4658:
1.301 www 4659: # ------------------------------------------------- Get the title of a resource
4660:
4661: sub gettitle {
4662: my $urlsymb=shift;
4663: my $symb=&symbread($urlsymb);
1.534 albertel 4664: if ($symb) {
1.599 albertel 4665: my $key=$ENV{'request.course.id'}."\0".$symb;
4666: my ($result,$cached)=&is_cached_new('title',$key);
1.575 albertel 4667: if (defined($cached)) {
4668: return $result;
4669: }
1.534 albertel 4670: my ($map,$resid,$url)=&decode_symb($symb);
4671: my $title='';
4672: my %bighash;
4673: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
4674: &GDBM_READER(),0640)) {
4675: my $mapid=$bighash{'map_pc_'.&clutter($map)};
4676: $title=$bighash{'title_'.$mapid.'.'.$resid};
4677: untie %bighash;
4678: }
4679: $title=~s/\&colon\;/\:/gs;
4680: if ($title) {
1.599 albertel 4681: return &do_cache_new('title',$key,$title,600);
1.534 albertel 4682: }
4683: $urlsymb=$url;
4684: }
4685: my $title=&metadata($urlsymb,'title');
4686: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
4687: return $title;
1.301 www 4688: }
4689:
1.31 www 4690: # ------------------------------------------------- Update symbolic store links
4691:
4692: sub symblist {
4693: my ($mapname,%newhash)=@_;
1.438 www 4694: $mapname=&deversion(&declutter($mapname));
1.31 www 4695: my %hash;
4696: if (($ENV{'request.course.fn'}) && (%newhash)) {
4697: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1.256 albertel 4698: &GDBM_WRCREAT(),0640)) {
1.191 harris41 4699: foreach (keys %newhash) {
1.601 albertel 4700: $hash{declutter($_)}=&encode_symb($mapname,$newhash{$_}->[1],
4701: $newhash{$_}->[0]);
1.191 harris41 4702: }
1.31 www 4703: if (untie(%hash)) {
4704: return 'ok';
4705: }
4706: }
4707: }
4708: return 'error';
1.212 www 4709: }
4710:
4711: # --------------------------------------------------------------- Verify a symb
4712:
4713: sub symbverify {
1.510 www 4714: my ($symb,$thisurl)=@_;
4715: my $thisfn=$thisurl;
4716: # wrapper not part of symbs
4717: $thisfn=~s/^\/adm\/wrapper//;
1.439 www 4718: $thisfn=&declutter($thisfn);
1.215 www 4719: # direct jump to resource in page or to a sequence - will construct own symbs
4720: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
4721: # check URL part
1.409 www 4722: my ($map,$resid,$url)=&decode_symb($symb);
1.439 www 4723:
1.431 www 4724: unless ($url eq $thisfn) { return 0; }
1.213 www 4725:
1.216 www 4726: $symb=&symbclean($symb);
1.510 www 4727: $thisurl=&deversion($thisurl);
1.439 www 4728: $thisfn=&deversion($thisfn);
1.213 www 4729:
4730: my %bighash;
4731: my $okay=0;
1.431 www 4732:
1.213 www 4733: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.256 albertel 4734: &GDBM_READER(),0640)) {
1.510 www 4735: my $ids=$bighash{'ids_'.&clutter($thisurl)};
1.216 www 4736: unless ($ids) {
1.510 www 4737: $ids=$bighash{'ids_/'.$thisurl};
1.216 www 4738: }
4739: if ($ids) {
4740: # ------------------------------------------------------------------- Has ID(s)
4741: foreach (split(/\,/,$ids)) {
4742: my ($mapid,$resid)=split(/\./,$_);
4743: if (
4744: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
4745: eq $symb) {
1.582 albertel 4746: if (($ENV{'request.role.adv'}) ||
4747: $bighash{'encrypted_'.$_} eq $ENV{'request.enc'}) {
4748: $okay=1;
4749: }
4750: }
1.216 www 4751: }
4752: }
1.213 www 4753: untie(%bighash);
4754: }
4755: return $okay;
1.31 www 4756: }
4757:
1.210 www 4758: # --------------------------------------------------------------- Clean-up symb
4759:
4760: sub symbclean {
4761: my $symb=shift;
1.568 albertel 4762: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
1.210 www 4763: # remove version from map
4764: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
1.215 www 4765:
1.210 www 4766: # remove version from URL
4767: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
1.213 www 4768:
1.507 www 4769: # remove wrapper
4770:
1.510 www 4771: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
1.210 www 4772: return $symb;
1.409 www 4773: }
4774:
4775: # ---------------------------------------------- Split symb to find map and url
1.429 albertel 4776:
4777: sub encode_symb {
4778: my ($map,$resid,$url)=@_;
4779: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
4780: }
1.409 www 4781:
4782: sub decode_symb {
1.568 albertel 4783: my $symb=shift;
4784: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
4785: my ($map,$resid,$url)=split(/___/,$symb);
1.413 www 4786: return (&fixversion($map),$resid,&fixversion($url));
4787: }
4788:
4789: sub fixversion {
4790: my $fn=shift;
4791: if ($fn=~/^(adm|uploaded|public)/) { return $fn; }
1.435 www 4792: my %bighash;
4793: my $uri=&clutter($fn);
1.440 www 4794: my $key=$ENV{'request.course.id'}.'_'.$uri;
4795: # is this cached?
1.599 albertel 4796: my ($result,$cached)=&is_cached_new('courseresversion',$key);
1.440 www 4797: if (defined($cached)) { return $result; }
4798: # unfortunately not cached, or expired
1.435 www 4799: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.440 www 4800: &GDBM_READER(),0640)) {
4801: if ($bighash{'version_'.$uri}) {
4802: my $version=$bighash{'version_'.$uri};
1.444 www 4803: unless (($version eq 'mostrecent') ||
4804: ($version==&getversion($uri))) {
1.440 www 4805: $uri=~s/\.(\w+)$/\.$version\.$1/;
4806: }
4807: }
4808: untie %bighash;
1.413 www 4809: }
1.599 albertel 4810: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
1.438 www 4811: }
4812:
4813: sub deversion {
4814: my $url=shift;
4815: $url=~s/\.\d+\.(\w+)$/\.$1/;
4816: return $url;
1.210 www 4817: }
4818:
1.31 www 4819: # ------------------------------------------------------ Return symb list entry
4820:
4821: sub symbread {
1.249 www 4822: my ($thisfn,$donotrecurse)=@_;
1.542 albertel 4823: my $cache_str='request.symbread.cached.'.$thisfn;
4824: if (defined($ENV{$cache_str})) { return $ENV{$cache_str}; }
1.242 www 4825: # no filename provided? try from environment
1.44 www 4826: unless ($thisfn) {
1.539 albertel 4827: if ($ENV{'request.symb'}) {
1.542 albertel 4828: return $ENV{$cache_str}=&symbclean($ENV{'request.symb'});
1.539 albertel 4829: }
1.44 www 4830: $thisfn=$ENV{'request.filename'};
4831: }
1.569 albertel 4832: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
1.242 www 4833: # is that filename actually a symb? Verify, clean, and return
4834: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
1.539 albertel 4835: if (&symbverify($thisfn,$1)) {
1.542 albertel 4836: return $ENV{$cache_str}=&symbclean($thisfn);
1.539 albertel 4837: }
1.242 www 4838: }
1.44 www 4839: $thisfn=declutter($thisfn);
1.31 www 4840: my %hash;
1.37 www 4841: my %bighash;
4842: my $syval='';
1.45 www 4843: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.481 raeburn 4844: my $targetfn = $thisfn;
4845: if ( ($thisfn =~ m/^uploaded\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
4846: $targetfn = 'adm/wrapper/'.$thisfn;
4847: }
1.31 www 4848: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1.256 albertel 4849: &GDBM_READER(),0640)) {
1.481 raeburn 4850: $syval=$hash{$targetfn};
1.37 www 4851: untie(%hash);
4852: }
4853: # ---------------------------------------------------------- There was an entry
4854: if ($syval) {
1.601 albertel 4855: #unless ($syval=~/\_\d+$/) {
4856: #unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
4857: #&appenv('request.ambiguous' => $thisfn);
4858: #return $ENV{$cache_str}='';
4859: #}
4860: #$syval.=$1;
4861: #}
1.37 www 4862: } else {
4863: # ------------------------------------------------------- Was not in symb table
4864: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.256 albertel 4865: &GDBM_READER(),0640)) {
1.37 www 4866: # ---------------------------------------------- Get ID(s) for current resource
1.280 www 4867: my $ids=$bighash{'ids_'.&clutter($thisfn)};
1.65 www 4868: unless ($ids) {
4869: $ids=$bighash{'ids_/'.$thisfn};
1.242 www 4870: }
4871: unless ($ids) {
4872: # alias?
4873: $ids=$bighash{'mapalias_'.$thisfn};
1.65 www 4874: }
1.37 www 4875: if ($ids) {
4876: # ------------------------------------------------------------------- Has ID(s)
4877: my @possibilities=split(/\,/,$ids);
1.39 www 4878: if ($#possibilities==0) {
4879: # ----------------------------------------------- There is only one possibility
1.37 www 4880: my ($mapid,$resid)=split(/\./,$ids);
4881: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
1.249 www 4882: } elsif (!$donotrecurse) {
1.39 www 4883: # ------------------------------------------ There is more than one possibility
4884: my $realpossible=0;
1.191 harris41 4885: foreach (@possibilities) {
1.39 www 4886: my $file=$bighash{'src_'.$_};
4887: if (&allowed('bre',$file)) {
4888: my ($mapid,$resid)=split(/\./,$_);
4889: if ($bighash{'map_type_'.$mapid} ne 'page') {
4890: $realpossible++;
4891: $syval=declutter($bighash{'map_id_'.$mapid}).
4892: '___'.$resid;
4893: }
4894: }
1.191 harris41 4895: }
1.39 www 4896: if ($realpossible!=1) { $syval=''; }
1.249 www 4897: } else {
4898: $syval='';
1.37 www 4899: }
4900: }
4901: untie(%bighash)
1.481 raeburn 4902: }
1.31 www 4903: }
1.62 www 4904: if ($syval) {
1.601 albertel 4905: return $ENV{$cache_str}=$syval;
4906: #return $ENV{$cache_str}=&symbclean($syval.'___'.$thisfn);
1.62 www 4907: }
1.31 www 4908: }
1.44 www 4909: &appenv('request.ambiguous' => $thisfn);
1.542 albertel 4910: return $ENV{$cache_str}='';
1.31 www 4911: }
4912:
4913: # ---------------------------------------------------------- Return random seed
4914:
1.32 www 4915: sub numval {
4916: my $txt=shift;
4917: $txt=~tr/A-J/0-9/;
4918: $txt=~tr/a-j/0-9/;
4919: $txt=~tr/K-T/0-9/;
4920: $txt=~tr/k-t/0-9/;
4921: $txt=~tr/U-Z/0-5/;
4922: $txt=~tr/u-z/0-5/;
4923: $txt=~s/\D//g;
1.564 albertel 4924: if ($_64bit) { if ($txt > 2**32) { return -1; } }
1.32 www 4925: return int($txt);
1.368 albertel 4926: }
4927:
1.484 albertel 4928: sub numval2 {
4929: my $txt=shift;
4930: $txt=~tr/A-J/0-9/;
4931: $txt=~tr/a-j/0-9/;
4932: $txt=~tr/K-T/0-9/;
4933: $txt=~tr/k-t/0-9/;
4934: $txt=~tr/U-Z/0-5/;
4935: $txt=~tr/u-z/0-5/;
4936: $txt=~s/\D//g;
4937: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
4938: my $total;
4939: foreach my $val (@txts) { $total+=$val; }
1.564 albertel 4940: if ($_64bit) { if ($total > 2**32) { return -1; } }
1.484 albertel 4941: return int($total);
4942: }
4943:
1.575 albertel 4944: sub numval3 {
4945: use integer;
4946: my $txt=shift;
4947: $txt=~tr/A-J/0-9/;
4948: $txt=~tr/a-j/0-9/;
4949: $txt=~tr/K-T/0-9/;
4950: $txt=~tr/k-t/0-9/;
4951: $txt=~tr/U-Z/0-5/;
4952: $txt=~tr/u-z/0-5/;
4953: $txt=~s/\D//g;
4954: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
4955: my $total;
4956: foreach my $val (@txts) { $total+=$val; }
4957: if ($_64bit) { $total=(($total<<32)>>32); }
4958: return $total;
4959: }
4960:
1.368 albertel 4961: sub latest_rnd_algorithm_id {
1.575 albertel 4962: return '64bit4';
1.366 albertel 4963: }
1.32 www 4964:
1.503 albertel 4965: sub get_rand_alg {
4966: my ($courseid)=@_;
4967: if (!$courseid) { $courseid=(&Apache::lonxml::whichuser())[1]; }
4968: if ($courseid) {
4969: return $ENV{"course.$courseid.rndseed"};
4970: }
4971: return &latest_rnd_algorithm_id();
4972: }
4973:
1.562 albertel 4974: sub validCODE {
4975: my ($CODE)=@_;
4976: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
4977: return 0;
4978: }
4979:
1.491 albertel 4980: sub getCODE {
1.562 albertel 4981: if (&validCODE($ENV{'form.CODE'})) { return $ENV{'form.CODE'}; }
1.491 albertel 4982: if (defined($Apache::lonhomework::parsing_a_problem) &&
1.562 albertel 4983: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
1.491 albertel 4984: return $Apache::lonhomework::history{'resource.CODE'};
4985: }
4986: return undef;
4987: }
4988:
1.31 www 4989: sub rndseed {
1.155 albertel 4990: my ($symb,$courseid,$domain,$username)=@_;
1.366 albertel 4991:
4992: my ($wsymb,$wcourseid,$wdomain,$wusername)=&Apache::lonxml::whichuser();
1.155 albertel 4993: if (!$symb) {
1.366 albertel 4994: unless ($symb=$wsymb) { return time; }
4995: }
4996: if (!$courseid) { $courseid=$wcourseid; }
4997: if (!$domain) { $domain=$wdomain; }
4998: if (!$username) { $username=$wusername }
1.503 albertel 4999: my $which=&get_rand_alg();
1.491 albertel 5000: if (defined(&getCODE())) {
1.575 albertel 5001: if ($which eq '64bit4') {
5002: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
5003: } else {
5004: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
5005: }
5006: } elsif ($which eq '64bit4') {
5007: return &rndseed_64bit4($symb,$courseid,$domain,$username);
1.501 albertel 5008: } elsif ($which eq '64bit3') {
5009: return &rndseed_64bit3($symb,$courseid,$domain,$username);
1.443 albertel 5010: } elsif ($which eq '64bit2') {
5011: return &rndseed_64bit2($symb,$courseid,$domain,$username);
1.366 albertel 5012: } elsif ($which eq '64bit') {
5013: return &rndseed_64bit($symb,$courseid,$domain,$username);
5014: }
5015: return &rndseed_32bit($symb,$courseid,$domain,$username);
5016: }
5017:
5018: sub rndseed_32bit {
5019: my ($symb,$courseid,$domain,$username)=@_;
5020: {
5021: use integer;
5022: my $symbchck=unpack("%32C*",$symb) << 27;
5023: my $symbseed=numval($symb) << 22;
5024: my $namechck=unpack("%32C*",$username) << 17;
5025: my $nameseed=numval($username) << 12;
5026: my $domainseed=unpack("%32C*",$domain) << 7;
5027: my $courseseed=unpack("%32C*",$courseid);
5028: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
5029: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5030: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.564 albertel 5031: if ($_64bit) { $num=(($num<<32)>>32); }
1.366 albertel 5032: return $num;
5033: }
5034: }
5035:
5036: sub rndseed_64bit {
5037: my ($symb,$courseid,$domain,$username)=@_;
5038: {
5039: use integer;
5040: my $symbchck=unpack("%32S*",$symb) << 21;
5041: my $symbseed=numval($symb) << 10;
5042: my $namechck=unpack("%32S*",$username);
5043:
5044: my $nameseed=numval($username) << 21;
5045: my $domainseed=unpack("%32S*",$domain) << 10;
5046: my $courseseed=unpack("%32S*",$courseid);
5047:
5048: my $num1=$symbchck+$symbseed+$namechck;
5049: my $num2=$nameseed+$domainseed+$courseseed;
5050: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5051: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.564 albertel 5052: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
5053: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
1.366 albertel 5054: return "$num1,$num2";
1.155 albertel 5055: }
1.366 albertel 5056: }
5057:
1.443 albertel 5058: sub rndseed_64bit2 {
5059: my ($symb,$courseid,$domain,$username)=@_;
5060: {
5061: use integer;
5062: # strings need to be an even # of cahracters long, it it is odd the
5063: # last characters gets thrown away
5064: my $symbchck=unpack("%32S*",$symb.' ') << 21;
5065: my $symbseed=numval($symb) << 10;
5066: my $namechck=unpack("%32S*",$username.' ');
5067:
5068: my $nameseed=numval($username) << 21;
1.501 albertel 5069: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5070: my $courseseed=unpack("%32S*",$courseid.' ');
5071:
5072: my $num1=$symbchck+$symbseed+$namechck;
5073: my $num2=$nameseed+$domainseed+$courseseed;
5074: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5075: #&Apache::lonxml::debug("rndseed :$num:$symb");
5076: return "$num1,$num2";
5077: }
5078: }
5079:
5080: sub rndseed_64bit3 {
5081: my ($symb,$courseid,$domain,$username)=@_;
5082: {
5083: use integer;
5084: # strings need to be an even # of cahracters long, it it is odd the
5085: # last characters gets thrown away
5086: my $symbchck=unpack("%32S*",$symb.' ') << 21;
5087: my $symbseed=numval2($symb) << 10;
5088: my $namechck=unpack("%32S*",$username.' ');
5089:
5090: my $nameseed=numval2($username) << 21;
1.443 albertel 5091: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5092: my $courseseed=unpack("%32S*",$courseid.' ');
5093:
5094: my $num1=$symbchck+$symbseed+$namechck;
5095: my $num2=$nameseed+$domainseed+$courseseed;
5096: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
1.564 albertel 5097: #&Apache::lonxml::debug("rndseed :$num1:$num2:$_64bit");
5098: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
5099:
1.503 albertel 5100: return "$num1:$num2";
1.443 albertel 5101: }
5102: }
5103:
1.575 albertel 5104: sub rndseed_64bit4 {
5105: my ($symb,$courseid,$domain,$username)=@_;
5106: {
5107: use integer;
5108: # strings need to be an even # of cahracters long, it it is odd the
5109: # last characters gets thrown away
5110: my $symbchck=unpack("%32S*",$symb.' ') << 21;
5111: my $symbseed=numval3($symb) << 10;
5112: my $namechck=unpack("%32S*",$username.' ');
5113:
5114: my $nameseed=numval3($username) << 21;
5115: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5116: my $courseseed=unpack("%32S*",$courseid.' ');
5117:
5118: my $num1=$symbchck+$symbseed+$namechck;
5119: my $num2=$nameseed+$domainseed+$courseseed;
5120: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5121: #&Apache::lonxml::debug("rndseed :$num1:$num2:$_64bit");
5122: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
5123:
5124: return "$num1:$num2";
5125: }
5126: }
5127:
1.366 albertel 5128: sub rndseed_CODE_64bit {
5129: my ($symb,$courseid,$domain,$username)=@_;
1.155 albertel 5130: {
1.366 albertel 5131: use integer;
1.443 albertel 5132: my $symbchck=unpack("%32S*",$symb.' ') << 16;
1.484 albertel 5133: my $symbseed=numval2($symb);
1.491 albertel 5134: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
5135: my $CODEseed=numval(&getCODE());
1.443 albertel 5136: my $courseseed=unpack("%32S*",$courseid.' ');
1.484 albertel 5137: my $num1=$symbseed+$CODEchck;
5138: my $num2=$CODEseed+$courseseed+$symbchck;
5139: #&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
1.366 albertel 5140: #&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
1.564 albertel 5141: if ($_64bit) { $num1=(($num1<<32)>>32); }
5142: if ($_64bit) { $num2=(($num2<<32)>>32); }
1.503 albertel 5143: return "$num1:$num2";
1.366 albertel 5144: }
5145: }
5146:
1.575 albertel 5147: sub rndseed_CODE_64bit4 {
5148: my ($symb,$courseid,$domain,$username)=@_;
5149: {
5150: use integer;
5151: my $symbchck=unpack("%32S*",$symb.' ') << 16;
5152: my $symbseed=numval3($symb);
5153: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
5154: my $CODEseed=numval3(&getCODE());
5155: my $courseseed=unpack("%32S*",$courseid.' ');
5156: my $num1=$symbseed+$CODEchck;
5157: my $num2=$CODEseed+$courseseed+$symbchck;
5158: #&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
5159: #&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
5160: if ($_64bit) { $num1=(($num1<<32)>>32); }
5161: if ($_64bit) { $num2=(($num2<<32)>>32); }
5162: return "$num1:$num2";
5163: }
5164: }
5165:
1.366 albertel 5166: sub setup_random_from_rndseed {
5167: my ($rndseed)=@_;
1.503 albertel 5168: if ($rndseed =~/([,:])/) {
5169: my ($num1,$num2)=split(/[,:]/,$rndseed);
1.366 albertel 5170: &Math::Random::random_set_seed(abs($num1),abs($num2));
5171: } else {
5172: &Math::Random::random_set_seed_from_phrase($rndseed);
1.98 albertel 5173: }
1.36 albertel 5174: }
5175:
1.474 albertel 5176: sub latest_receipt_algorithm_id {
5177: return 'receipt2';
5178: }
5179:
1.480 www 5180: sub recunique {
5181: my $fucourseid=shift;
5182: my $unique;
5183: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2') {
5184: $unique=$ENV{"course.$fucourseid.internal.encseed"};
5185: } else {
5186: $unique=$perlvar{'lonReceipt'};
5187: }
5188: return unpack("%32C*",$unique);
5189: }
5190:
5191: sub recprefix {
5192: my $fucourseid=shift;
5193: my $prefix;
5194: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2') {
5195: $prefix=$ENV{"course.$fucourseid.internal.encpref"};
5196: } else {
5197: $prefix=$perlvar{'lonHostID'};
5198: }
5199: return unpack("%32C*",$prefix);
5200: }
5201:
1.76 www 5202: sub ireceipt {
1.474 albertel 5203: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
1.76 www 5204: my $cuname=unpack("%32C*",$funame);
5205: my $cudom=unpack("%32C*",$fudom);
5206: my $cucourseid=unpack("%32C*",$fucourseid);
5207: my $cusymb=unpack("%32C*",$fusymb);
1.480 www 5208: my $cunique=&recunique($fucourseid);
1.474 albertel 5209: my $cpart=unpack("%32S*",$part);
1.480 www 5210: my $return =&recprefix($fucourseid).'-';
1.474 albertel 5211: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
5212: $ENV{'request.state'} eq 'construct') {
5213: &Apache::lonxml::debug("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname).
5214: " and ".($cpart%$cudom));
5215:
5216: $return.= ($cunique%$cuname+
5217: $cunique%$cudom+
5218: $cusymb%$cuname+
5219: $cusymb%$cudom+
5220: $cucourseid%$cuname+
5221: $cucourseid%$cudom+
5222: $cpart%$cuname+
5223: $cpart%$cudom);
5224: } else {
5225: $return.= ($cunique%$cuname+
5226: $cunique%$cudom+
5227: $cusymb%$cuname+
5228: $cusymb%$cudom+
5229: $cucourseid%$cuname+
5230: $cucourseid%$cudom);
5231: }
5232: return $return;
1.76 www 5233: }
5234:
5235: sub receipt {
1.474 albertel 5236: my ($part)=@_;
5237: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
5238: return &ireceipt($name,$domain,$courseid,$symb,$part);
1.76 www 5239: }
1.260 ng 5240:
1.36 albertel 5241: # ------------------------------------------------------------ Serves up a file
1.472 albertel 5242: # returns either the contents of the file or
5243: # -1 if the file doesn't exist
1.481 raeburn 5244: #
5245: # if the target is a file that was uploaded via DOCS,
5246: # a check will be made to see if a current copy exists on the local server,
5247: # if it does this will be served, otherwise a copy will be retrieved from
5248: # the home server for the course and stored in /home/httpd/html/userfiles on
5249: # the local server.
1.472 albertel 5250:
1.36 albertel 5251: sub getfile {
1.538 albertel 5252: my ($file) = @_;
1.482 albertel 5253:
1.538 albertel 5254: if ($file =~ m|^/*uploaded/|) { $file=&filelocation("",$file); }
5255: &repcopy($file);
5256: return &readfile($file);
5257: }
5258:
5259: sub repcopy_userfile {
5260: my ($file)=@_;
5261: if ($file =~ m|^/*uploaded/|) { $file=&filelocation("",$file); }
1.602 raeburn 5262: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'OK'; }
1.538 albertel 5263: my ($cdom,$cnum,$filename) =
5264: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+([^/]+)/+([^/]+)/+(.*)|);
5265: my ($info,$rtncode);
5266: my $uri="/uploaded/$cdom/$cnum/$filename";
5267: if (-e "$file") {
5268: my @fileinfo = stat($file);
5269: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5270: if ($lwpresp ne 'ok') {
5271: if ($rtncode eq '404') {
1.538 albertel 5272: unlink($file);
1.482 albertel 5273: }
1.517 albertel 5274: #my $ua=new LWP::UserAgent;
1.538 albertel 5275: #my $request=new HTTP::Request('GET',&tokenwrapper($uri));
1.517 albertel 5276: #my $response=$ua->request($request);
5277: #if ($response->is_success()) {
5278: # return $response->content;
5279: # } else {
5280: # return -1;
5281: # }
1.482 albertel 5282: return -1;
5283: }
5284: if ($info < $fileinfo[9]) {
1.602 raeburn 5285: return 'OK';
1.482 albertel 5286: }
5287: $info = '';
1.538 albertel 5288: $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5289: if ($lwpresp ne 'ok') {
5290: return -1;
5291: }
5292: } else {
1.538 albertel 5293: my $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5294: if ($lwpresp ne 'ok') {
1.517 albertel 5295: my $ua=new LWP::UserAgent;
1.538 albertel 5296: my $request=new HTTP::Request('GET',&tokenwrapper($uri));
1.517 albertel 5297: my $response=$ua->request($request);
5298: if ($response->is_success()) {
1.538 albertel 5299: $info=$response->content;
1.517 albertel 5300: } else {
5301: return -1;
5302: }
1.482 albertel 5303: }
5304: my @parts = ($cdom,$cnum);
5305: if ($filename =~ m|^(.+)/[^/]+$|) {
5306: push @parts, split(/\//,$1);
1.518 albertel 5307: }
1.538 albertel 5308: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
1.482 albertel 5309: foreach my $part (@parts) {
5310: $path .= '/'.$part;
5311: if (!-e $path) {
5312: mkdir($path,0770);
5313: }
5314: }
5315: }
1.538 albertel 5316: open(FILE,">$file");
1.482 albertel 5317: print FILE $info;
5318: close(FILE);
1.602 raeburn 5319: return 'OK';
1.481 raeburn 5320: }
5321:
1.517 albertel 5322: sub tokenwrapper {
5323: my $uri=shift;
1.552 albertel 5324: $uri=~s|^http\://([^/]+)||;
5325: $uri=~s|^/||;
1.517 albertel 5326: $ENV{'user.environment'}=~/\/([^\/]+)\.id/;
5327: my $token=$1;
1.552 albertel 5328: my (undef,$udom,$uname,$file)=split('/',$uri,4);
5329: if ($udom && $uname && $file) {
5330: $file=~s|(\?\.*)*$||;
5331: &appenv("userfile.$udom/$uname/$file" => $ENV{'request.course.id'});
5332: return 'http://'.$hostname{ &homeserver($uname,$udom)}.'/'.$uri.
1.517 albertel 5333: (($uri=~/\?/)?'&':'?').'token='.$token.
5334: '&tokenissued='.$perlvar{'lonHostID'};
5335: } else {
5336: return '/adm/notfound.html';
5337: }
5338: }
5339:
1.481 raeburn 5340: sub getuploaded {
5341: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
5342: $uri=~s/^\///;
5343: $uri = 'http://'.$hostname{ &homeserver($cnum,$cdom)}.'/raw/'.$uri;
5344: my $ua=new LWP::UserAgent;
5345: my $request=new HTTP::Request($reqtype,$uri);
5346: my $response=$ua->request($request);
5347: $$rtncode = $response->code;
1.482 albertel 5348: if (! $response->is_success()) {
5349: return 'failed';
5350: }
5351: if ($reqtype eq 'HEAD') {
1.486 www 5352: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
1.482 albertel 5353: } elsif ($reqtype eq 'GET') {
5354: $$info = $response->content;
1.472 albertel 5355: }
1.482 albertel 5356: return 'ok';
1.36 albertel 5357: }
5358:
1.481 raeburn 5359: sub readfile {
5360: my $file = shift;
5361: if ( (! -e $file ) || ($file eq '') ) { return -1; };
5362: my $fh;
5363: open($fh,"<$file");
5364: my $a='';
5365: while (<$fh>) { $a .=$_; }
5366: return $a;
5367: }
5368:
1.36 albertel 5369: sub filelocation {
1.590 banghart 5370: my ($dir,$file) = @_;
5371: my $location;
5372: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
5373: if ($file=~m:^/~:) { # is a contruction space reference
5374: $location = $file;
5375: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
5376: } elsif ($file=~/^\/*uploaded/) { # is an uploaded file
5377: my ($udom,$uname,$filename)=
5378: ($file=~m|^/+uploaded/+([^/]+)/+([^/]+)/+(.*)$|);
5379: my $home=&homeserver($uname,$udom);
5380: my $is_me=0;
5381: my @ids=¤t_machine_ids();
5382: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
5383: if ($is_me) {
5384: $location=&Apache::loncommon::propath($udom,$uname).
5385: '/userfiles/'.$filename;
5386: } else {
5387: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
5388: $udom.'/'.$uname.'/'.$filename;
5389: }
5390: } else {
5391: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
5392: $file=~s:^/res/:/:;
5393: if ( !( $file =~ m:^/:) ) {
5394: $location = $dir. '/'.$file;
5395: } else {
5396: $location = '/home/httpd/html/res'.$file;
5397: }
1.59 albertel 5398: }
1.590 banghart 5399: $location=~s://+:/:g; # remove duplicate /
5400: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
5401: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
5402: return $location;
1.46 www 5403: }
1.36 albertel 5404:
1.46 www 5405: sub hreflocation {
5406: my ($dir,$file)=@_;
1.460 albertel 5407: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
5408: my $finalpath=filelocation($dir,$file);
5409: $finalpath=~s-^/home/httpd/html--;
1.462 albertel 5410: $finalpath=~s-^/home/(\w+)/public_html/-/~$1/-;
1.460 albertel 5411: return $finalpath;
5412: } elsif ($file=~m-^/home-) {
5413: $file=~s-^/home/httpd/html--;
1.462 albertel 5414: $file=~s-^/home/(\w+)/public_html/-/~$1/-;
1.460 albertel 5415: return $file;
1.46 www 5416: }
1.462 albertel 5417: return $file;
1.465 albertel 5418: }
5419:
5420: sub current_machine_domains {
5421: my $hostname=$hostname{$perlvar{'lonHostID'}};
5422: my @domains;
5423: while( my($id, $name) = each(%hostname)) {
1.467 matthew 5424: # &logthis("-$id-$name-$hostname-");
1.465 albertel 5425: if ($hostname eq $name) {
5426: push(@domains,$hostdom{$id});
5427: }
5428: }
5429: return @domains;
5430: }
5431:
5432: sub current_machine_ids {
5433: my $hostname=$hostname{$perlvar{'lonHostID'}};
5434: my @ids;
5435: while( my($id, $name) = each(%hostname)) {
1.467 matthew 5436: # &logthis("-$id-$name-$hostname-");
1.465 albertel 5437: if ($hostname eq $name) {
5438: push(@ids,$id);
5439: }
5440: }
5441: return @ids;
1.31 www 5442: }
5443:
5444: # ------------------------------------------------------------- Declutters URLs
5445:
5446: sub declutter {
5447: my $thisfn=shift;
1.569 albertel 5448: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
1.479 albertel 5449: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
1.31 www 5450: $thisfn=~s/^\///;
5451: $thisfn=~s/^res\///;
1.235 www 5452: $thisfn=~s/\?.+$//;
1.268 www 5453: return $thisfn;
5454: }
5455:
5456: # ------------------------------------------------------------- Clutter up URLs
5457:
5458: sub clutter {
5459: my $thisfn='/'.&declutter(shift);
1.509 albertel 5460: unless ($thisfn=~/^\/(uploaded|adm|userfiles|ext|raw|priv|public)\//) {
1.270 www 5461: $thisfn='/res'.$thisfn;
5462: }
1.31 www 5463: return $thisfn;
1.12 www 5464: }
5465:
1.557 albertel 5466: sub freeze_escape {
5467: my ($value)=@_;
5468: if (ref($value)) {
5469: $value=&nfreeze($value);
5470: return '__FROZEN__'.&escape($value);
5471: }
5472: return &escape($value);
5473: }
5474:
1.12 www 5475: # -------------------------------------------------------- Escape Special Chars
5476:
5477: sub escape {
5478: my $str=shift;
5479: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
5480: return $str;
5481: }
5482:
5483: # ----------------------------------------------------- Un-Escape Special Chars
5484:
5485: sub unescape {
5486: my $str=shift;
5487: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
5488: return $str;
5489: }
1.11 www 5490:
1.557 albertel 5491: sub thaw_unescape {
5492: my ($value)=@_;
5493: if ($value =~ /^__FROZEN__/) {
5494: substr($value,0,10,undef);
5495: $value=&unescape($value);
5496: return &thaw($value);
5497: }
5498: return &unescape($value);
5499: }
5500:
1.415 albertel 5501: sub mod_perl_version {
1.580 albertel 5502: return 1;
1.415 albertel 5503: if (defined($perlvar{'MODPERL2'})) {
5504: return 2;
5505: }
1.436 albertel 5506: }
5507:
5508: sub correct_line_ends {
5509: my ($result)=@_;
5510: $$result =~s/\r\n/\n/mg;
5511: $$result =~s/\r/\n/mg;
1.415 albertel 5512: }
1.1 albertel 5513: # ================================================================ Main Program
5514:
1.184 www 5515: sub goodbye {
1.204 albertel 5516: &logthis("Starting Shut down");
1.443 albertel 5517: #not converted to using infrastruture and probably shouldn't be
1.599 albertel 5518: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&freeze(\%badServerCache))));
1.443 albertel 5519: #converted
1.599 albertel 5520: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
5521: &logthis(sprintf("%-20s is %s",'%homecache',length(&freeze(\%homecache))));
5522: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&freeze(\%titlecache))));
5523: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&freeze(\%courseresdatacache))));
1.425 albertel 5524: #1.1 only
1.599 albertel 5525: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&freeze(\%userresdatacache))));
5526: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&freeze(\%getsectioncache))));
5527: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&freeze(\%courseresversioncache))));
5528: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&freeze(\%resversioncache))));
5529: &logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
5530: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
5531: &logthis(sprintf("%-20s is %s",'hits',$hits));
1.184 www 5532: &flushcourselogs();
5533: &logthis("Shutting down");
1.362 albertel 5534: return DONE;
1.184 www 5535: }
5536:
1.179 www 5537: BEGIN {
1.228 harris41 5538: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
1.195 www 5539: unless ($readit) {
1.217 harris41 5540: {
1.581 matthew 5541: # FIXME: Use LONCAPA::Configuration::read_conf here and omit next block
1.448 albertel 5542: open(my $config,"</etc/httpd/conf/loncapa.conf");
1.217 harris41 5543:
5544: while (my $configline=<$config>) {
1.484 albertel 5545: if ($configline=~/\S/ && $configline =~ /^[^\#]*PerlSetVar/) {
1.1 albertel 5546: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 5547: chomp($varvalue);
1.1 albertel 5548: $perlvar{$varname}=$varvalue;
5549: }
5550: }
1.448 albertel 5551: close($config);
1.1 albertel 5552: }
1.227 harris41 5553: {
1.448 albertel 5554: open(my $config,"</etc/httpd/conf/loncapa_apache.conf");
1.227 harris41 5555:
5556: while (my $configline=<$config>) {
5557: if ($configline =~ /^[^\#]*PerlSetVar/) {
5558: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
5559: chomp($varvalue);
5560: $perlvar{$varname}=$varvalue;
5561: }
5562: }
1.448 albertel 5563: close($config);
1.227 harris41 5564: }
1.1 albertel 5565:
1.327 albertel 5566: # ------------------------------------------------------------ Read domain file
5567: {
5568: %domaindescription = ();
5569: %domain_auth_def = ();
5570: %domain_auth_arg_def = ();
1.448 albertel 5571: my $fh;
5572: if (open($fh,"<".$Apache::lonnet::perlvar{'lonTabDir'}.'/domain.tab')) {
1.327 albertel 5573: while (<$fh>) {
1.390 matthew 5574: next if (/^(\#|\s*$)/);
5575: # next if /^\#/;
1.327 albertel 5576: chomp;
1.403 www 5577: my ($domain, $domain_description, $def_auth, $def_auth_arg,
5578: $def_lang, $city, $longi, $lati) = split(/:/,$_);
5579: $domain_auth_def{$domain}=$def_auth;
1.327 albertel 5580: $domain_auth_arg_def{$domain}=$def_auth_arg;
1.403 www 5581: $domaindescription{$domain}=$domain_description;
5582: $domain_lang_def{$domain}=$def_lang;
5583: $domain_city{$domain}=$city;
5584: $domain_longi{$domain}=$longi;
5585: $domain_lati{$domain}=$lati;
5586:
1.448 albertel 5587: # &logthis("Domain.tab: $domain, $domain_auth_def{$domain}, $domain_auth_arg_def{$domain},$domaindescription{$domain}");
1.327 albertel 5588: # &logthis("Domain.tab: $domain ".$domaindescription{$domain} );
1.448 albertel 5589: }
1.327 albertel 5590: }
1.448 albertel 5591: close ($fh);
1.327 albertel 5592: }
5593:
5594:
1.1 albertel 5595: # ------------------------------------------------------------- Read hosts file
5596: {
1.448 albertel 5597: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
1.1 albertel 5598:
5599: while (my $configline=<$config>) {
1.303 matthew 5600: next if ($configline =~ /^(\#|\s*$)/);
1.154 www 5601: chomp($configline);
1.595 albertel 5602: my ($id,$domain,$role,$name)=split(/:/,$configline);
1.597 albertel 5603: $name=~s/\s//g;
1.595 albertel 5604: if ($id && $domain && $role && $name) {
1.252 albertel 5605: $hostname{$id}=$name;
5606: $hostdom{$id}=$domain;
5607: if ($role eq 'library') { $libserv{$id}=$name; }
1.245 www 5608: }
1.1 albertel 5609: }
1.448 albertel 5610: close($config);
1.1 albertel 5611: }
5612:
1.598 albertel 5613: sub get_iphost {
5614: if (%iphost) { return %iphost; }
5615: foreach my $id (keys(%hostname)) {
5616: my $name=$hostname{$id};
5617: my $ip = gethostbyname($name);
5618: if (!$ip || length($ip) ne 4) {
5619: &logthis("Skipping host $id name $name no IP found\n");
5620: next;
5621: }
5622: $ip=inet_ntoa($ip);
5623: push(@{$iphost{$ip}},$id);
5624: }
5625: return %iphost;
5626: }
5627:
1.1 albertel 5628: # ------------------------------------------------------ Read spare server file
5629: {
1.448 albertel 5630: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
1.1 albertel 5631:
5632: while (my $configline=<$config>) {
5633: chomp($configline);
1.284 matthew 5634: if ($configline) {
1.1 albertel 5635: $spareid{$configline}=1;
5636: }
5637: }
1.448 albertel 5638: close($config);
1.1 albertel 5639: }
1.11 www 5640: # ------------------------------------------------------------ Read permissions
5641: {
1.448 albertel 5642: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
1.11 www 5643:
5644: while (my $configline=<$config>) {
1.448 albertel 5645: chomp($configline);
5646: if ($configline) {
5647: my ($role,$perm)=split(/ /,$configline);
5648: if ($perm ne '') { $pr{$role}=$perm; }
5649: }
1.11 www 5650: }
1.448 albertel 5651: close($config);
1.11 www 5652: }
5653:
5654: # -------------------------------------------- Read plain texts for permissions
5655: {
1.448 albertel 5656: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
1.11 www 5657:
5658: while (my $configline=<$config>) {
1.448 albertel 5659: chomp($configline);
5660: if ($configline) {
5661: my ($short,$plain)=split(/:/,$configline);
5662: if ($plain ne '') { $prp{$short}=$plain; }
5663: }
1.135 www 5664: }
1.448 albertel 5665: close($config);
1.135 www 5666: }
5667:
5668: # ---------------------------------------------------------- Read package table
5669: {
1.448 albertel 5670: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
1.135 www 5671:
5672: while (my $configline=<$config>) {
1.483 albertel 5673: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
1.448 albertel 5674: chomp($configline);
5675: my ($short,$plain)=split(/:/,$configline);
5676: my ($pack,$name)=split(/\&/,$short);
5677: if ($plain ne '') {
5678: $packagetab{$pack.'&'.$name.'&name'}=$name;
5679: $packagetab{$short}=$plain;
5680: }
1.11 www 5681: }
1.448 albertel 5682: close($config);
1.329 matthew 5683: }
5684:
5685: # ------------- set up temporary directory
5686: {
5687: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
5688:
1.11 www 5689: }
5690:
1.599 albertel 5691: $memcache=new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.185 www 5692:
1.281 www 5693: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
1.186 www 5694: $dumpcount=0;
1.22 www 5695:
1.163 harris41 5696: &logtouch();
1.12 www 5697: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.195 www 5698: $readit=1;
1.564 albertel 5699: {
5700: use integer;
5701: my $test=(2**32)+1;
1.568 albertel 5702: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
1.564 albertel 5703: &logthis(" Detected 64bit platform ($_64bit)");
5704: }
1.195 www 5705: }
1.1 albertel 5706: }
1.179 www 5707:
1.1 albertel 5708: 1;
1.191 harris41 5709: __END__
5710:
1.243 albertel 5711: =pod
5712:
1.191 harris41 5713: =head1 NAME
5714:
1.243 albertel 5715: Apache::lonnet - Subroutines to ask questions about things in the network.
1.191 harris41 5716:
5717: =head1 SYNOPSIS
5718:
1.243 albertel 5719: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
1.191 harris41 5720:
5721: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
5722:
1.243 albertel 5723: Common parameters:
5724:
5725: =over 4
5726:
5727: =item *
5728:
5729: $uname : an internal username (if $cname expecting a course Id specifically)
5730:
5731: =item *
5732:
5733: $udom : a domain (if $cdom expecting a course's domain specifically)
5734:
5735: =item *
5736:
5737: $symb : a resource instance identifier
5738:
5739: =item *
5740:
5741: $namespace : the name of a .db file that contains the data needed or
5742: being set.
5743:
5744: =back
5745:
1.394 bowersj2 5746: =head1 OVERVIEW
1.191 harris41 5747:
1.394 bowersj2 5748: lonnet provides subroutines which interact with the
5749: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
5750: about classes, users, and resources.
1.243 albertel 5751:
5752: For many of these objects you can also use this to store data about
5753: them or modify them in various ways.
1.191 harris41 5754:
1.394 bowersj2 5755: =head2 Symbs
1.191 harris41 5756:
1.394 bowersj2 5757: To identify a specific instance of a resource, LON-CAPA uses symbols
5758: or "symbs"X<symb>. These identifiers are built from the URL of the
5759: map, the resource number of the resource in the map, and the URL of
5760: the resource itself. The latter is somewhat redundant, but might help
5761: if maps change.
5762:
5763: An example is
5764:
5765: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
5766:
5767: The respective map entry is
5768:
5769: <resource id="19" src="/res/msu/korte/tests/part12.problem"
5770: title="Problem 2">
5771: </resource>
5772:
5773: Symbs are used by the random number generator, as well as to store and
5774: restore data specific to a certain instance of for example a problem.
5775:
5776: =head2 Storing And Retrieving Data
5777:
5778: X<store()>X<cstore()>X<restore()>Three of the most important functions
5779: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
5780: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
5781: is is the non-critical message twin of cstore. These functions are for
5782: handlers to store a perl hash to a user's permanent data space in an
5783: easy manner, and to retrieve it again on another call. It is expected
5784: that a handler would use this once at the beginning to retrieve data,
5785: and then again once at the end to send only the new data back.
5786:
5787: The data is stored in the user's data directory on the user's
5788: homeserver under the ID of the course.
5789:
5790: The hash that is returned by restore will have all of the previous
5791: value for all of the elements of the hash.
5792:
5793: Example:
5794:
5795: #creating a hash
5796: my %hash;
5797: $hash{'foo'}='bar';
5798:
5799: #storing it
5800: &Apache::lonnet::cstore(\%hash);
5801:
5802: #changing a value
5803: $hash{'foo'}='notbar';
5804:
5805: #adding a new value
5806: $hash{'bar'}='foo';
5807: &Apache::lonnet::cstore(\%hash);
5808:
5809: #retrieving the hash
5810: my %history=&Apache::lonnet::restore();
5811:
5812: #print the hash
5813: foreach my $key (sort(keys(%history))) {
5814: print("\%history{$key} = $history{$key}");
5815: }
5816:
5817: Will print out:
1.191 harris41 5818:
1.394 bowersj2 5819: %history{1:foo} = bar
5820: %history{1:keys} = foo:timestamp
5821: %history{1:timestamp} = 990455579
5822: %history{2:bar} = foo
5823: %history{2:foo} = notbar
5824: %history{2:keys} = foo:bar:timestamp
5825: %history{2:timestamp} = 990455580
5826: %history{bar} = foo
5827: %history{foo} = notbar
5828: %history{timestamp} = 990455580
5829: %history{version} = 2
5830:
5831: Note that the special hash entries C<keys>, C<version> and
5832: C<timestamp> were added to the hash. C<version> will be equal to the
5833: total number of versions of the data that have been stored. The
5834: C<timestamp> attribute will be the UNIX time the hash was
5835: stored. C<keys> is available in every historical section to list which
5836: keys were added or changed at a specific historical revision of a
5837: hash.
5838:
5839: B<Warning>: do not store the hash that restore returns directly. This
5840: will cause a mess since it will restore the historical keys as if the
5841: were new keys. I.E. 1:foo will become 1:1:foo etc.
1.191 harris41 5842:
1.394 bowersj2 5843: Calling convention:
1.191 harris41 5844:
1.394 bowersj2 5845: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
5846: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
1.191 harris41 5847:
1.394 bowersj2 5848: For more detailed information, see lonnet specific documentation.
1.191 harris41 5849:
1.394 bowersj2 5850: =head1 RETURN MESSAGES
1.191 harris41 5851:
1.394 bowersj2 5852: =over 4
1.191 harris41 5853:
1.394 bowersj2 5854: =item * B<con_lost>: unable to contact remote host
1.191 harris41 5855:
1.394 bowersj2 5856: =item * B<con_delayed>: unable to contact remote host, message will be delivered
5857: when the connection is brought back up
1.191 harris41 5858:
1.394 bowersj2 5859: =item * B<con_failed>: unable to contact remote host and unable to save message
5860: for later delivery
1.191 harris41 5861:
1.394 bowersj2 5862: =item * B<error:>: an error a occured, a description of the error follows the :
1.191 harris41 5863:
1.394 bowersj2 5864: =item * B<no_such_host>: unable to fund a host associated with the user/domain
1.243 albertel 5865: that was requested
1.191 harris41 5866:
1.243 albertel 5867: =back
1.191 harris41 5868:
1.243 albertel 5869: =head1 PUBLIC SUBROUTINES
1.191 harris41 5870:
1.243 albertel 5871: =head2 Session Environment Functions
1.191 harris41 5872:
1.243 albertel 5873: =over 4
1.191 harris41 5874:
1.394 bowersj2 5875: =item *
5876: X<appenv()>
5877: B<appenv(%hash)>: the value of %hash is written to
5878: the user envirnoment file, and will be restored for each access this
5879: user makes during this session, also modifies the %ENV for the current
5880: process
1.191 harris41 5881:
5882: =item *
1.394 bowersj2 5883: X<delenv()>
5884: B<delenv($regexp)>: removes all items from the session
5885: environment file that matches the regular expression in $regexp. The
5886: values are also delted from the current processes %ENV.
1.191 harris41 5887:
1.243 albertel 5888: =back
5889:
5890: =head2 User Information
1.191 harris41 5891:
1.243 albertel 5892: =over 4
1.191 harris41 5893:
5894: =item *
1.394 bowersj2 5895: X<queryauthenticate()>
5896: B<queryauthenticate($uname,$udom)>: try to determine user's current
1.191 harris41 5897: authentication scheme
5898:
5899: =item *
1.394 bowersj2 5900: X<authenticate()>
5901: B<authenticate($uname,$upass,$udom)>: try to
5902: authenticate user from domain's lib servers (first use the current
5903: one). C<$upass> should be the users password.
1.191 harris41 5904:
5905: =item *
1.394 bowersj2 5906: X<homeserver()>
5907: B<homeserver($uname,$udom)>: find the server which has
5908: the user's directory and files (there must be only one), this caches
5909: the answer, and also caches if there is a borken connection.
1.191 harris41 5910:
5911: =item *
1.394 bowersj2 5912: X<idget()>
5913: B<idget($udom,@ids)>: find the usernames behind a list of IDs
5914: (IDs are a unique resource in a domain, there must be only 1 ID per
5915: username, and only 1 username per ID in a specific domain) (returns
5916: hash: id=>name,id=>name)
1.191 harris41 5917:
5918: =item *
1.394 bowersj2 5919: X<idrget()>
5920: B<idrget($udom,@unames)>: find the IDs behind a list of
5921: usernames (returns hash: name=>id,name=>id)
1.191 harris41 5922:
5923: =item *
1.394 bowersj2 5924: X<idput()>
5925: B<idput($udom,%ids)>: store away a list of names and associated IDs
1.191 harris41 5926:
5927: =item *
1.394 bowersj2 5928: X<rolesinit()>
5929: B<rolesinit($udom,$username,$authhost)>: get user privileges
1.243 albertel 5930:
5931: =item *
1.551 albertel 5932: X<getsection()>
5933: B<getsection($udom,$uname,$cname)>: finds the section of student in the
1.243 albertel 5934: course $cname, return section name/number or '' for "not in course"
5935: and '-1' for "no section"
5936:
5937: =item *
1.394 bowersj2 5938: X<userenvironment()>
5939: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
1.243 albertel 5940: passed in @what from the requested user's environment, returns a hash
5941:
5942: =back
5943:
5944: =head2 User Roles
5945:
5946: =over 4
5947:
5948: =item *
5949:
5950: allowed($priv,$uri) : check for a user privilege; returns codes for allowed
5951: actions
5952: F: full access
5953: U,I,K: authentication modes (cxx only)
5954: '': forbidden
5955: 1: user needs to choose course
5956: 2: browse allowed
5957:
5958: =item *
5959:
5960: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
5961: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
5962: and course level
5963:
5964: =item *
5965:
5966: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
5967: explanation of a user role term
5968:
5969: =back
5970:
5971: =head2 User Modification
5972:
5973: =over 4
5974:
5975: =item *
5976:
5977: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
5978: user for the level given by URL. Optional start and end dates (leave empty
5979: string or zero for "no date")
1.191 harris41 5980:
5981: =item *
5982:
1.243 albertel 5983: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
5984: change a users, password, possible return values are: ok,
5985: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
5986: refused
1.191 harris41 5987:
5988: =item *
5989:
1.243 albertel 5990: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
1.191 harris41 5991:
5992: =item *
5993:
1.243 albertel 5994: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
5995: modify user
1.191 harris41 5996:
5997: =item *
5998:
1.286 matthew 5999: modifystudent
6000:
6001: modify a students enrollment and identification information.
6002: The course id is resolved based on the current users environment.
6003: This means the envoking user must be a course coordinator or otherwise
6004: associated with a course.
6005:
1.297 matthew 6006: This call is essentially a wrapper for lonnet::modifyuser and
6007: lonnet::modify_student_enrollment
1.286 matthew 6008:
6009: Inputs:
6010:
6011: =over 4
6012:
6013: =item B<$udom> Students loncapa domain
6014:
6015: =item B<$uname> Students loncapa login name
6016:
6017: =item B<$uid> Students id/student number
6018:
6019: =item B<$umode> Students authentication mode
6020:
6021: =item B<$upass> Students password
6022:
6023: =item B<$first> Students first name
6024:
6025: =item B<$middle> Students middle name
6026:
6027: =item B<$last> Students last name
6028:
6029: =item B<$gene> Students generation
6030:
6031: =item B<$usec> Students section in course
6032:
6033: =item B<$end> Unix time of the roles expiration
6034:
6035: =item B<$start> Unix time of the roles start date
6036:
6037: =item B<$forceid> If defined, allow $uid to be changed
6038:
6039: =item B<$desiredhome> server to use as home server for student
6040:
6041: =back
1.297 matthew 6042:
6043: =item *
6044:
6045: modify_student_enrollment
6046:
6047: Change a students enrollment status in a class. The environment variable
6048: 'role.request.course' must be defined for this function to proceed.
6049:
6050: Inputs:
6051:
6052: =over 4
6053:
6054: =item $udom, students domain
6055:
6056: =item $uname, students name
6057:
6058: =item $uid, students user id
6059:
6060: =item $first, students first name
6061:
6062: =item $middle
6063:
6064: =item $last
6065:
6066: =item $gene
6067:
6068: =item $usec
6069:
6070: =item $end
6071:
6072: =item $start
6073:
6074: =back
6075:
1.191 harris41 6076:
6077: =item *
6078:
1.243 albertel 6079: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
6080: custom role; give a custom role to a user for the level given by URL. Specify
6081: name and domain of role author, and role name
1.191 harris41 6082:
6083: =item *
6084:
1.243 albertel 6085: revokerole($udom,$uname,$url,$role) : revoke a role for url
1.191 harris41 6086:
6087: =item *
6088:
1.243 albertel 6089: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
6090:
6091: =back
6092:
6093: =head2 Course Infomation
6094:
6095: =over 4
1.191 harris41 6096:
6097: =item *
6098:
1.243 albertel 6099: coursedescription($courseid) : course description
1.191 harris41 6100:
6101: =item *
6102:
1.243 albertel 6103: courseresdata($coursenum,$coursedomain,@which) : request for current
6104: parameter setting for a specific course, @what should be a list of
6105: parameters to ask about. This routine caches answers for 5 minutes.
6106:
6107: =back
6108:
6109: =head2 Course Modification
6110:
6111: =over 4
1.191 harris41 6112:
6113: =item *
6114:
1.243 albertel 6115: writecoursepref($courseid,%prefs) : write preferences (environment
6116: database) for a course
1.191 harris41 6117:
6118: =item *
6119:
1.243 albertel 6120: createcourse($udom,$description,$url) : make/modify course
6121:
6122: =back
6123:
6124: =head2 Resource Subroutines
6125:
6126: =over 4
1.191 harris41 6127:
6128: =item *
6129:
1.243 albertel 6130: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
1.191 harris41 6131:
6132: =item *
6133:
1.243 albertel 6134: repcopy($filename) : subscribes to the requested file, and attempts to
6135: replicate from the owning library server, Might return
1.602 raeburn 6136: 'HTTP_SERVICE_UNAVAILABLE', 'HTTP_NOT_FOUND', 'FORBIDDEN', 'OK', or
6137: 'HTTP_BAD_REQUEST', also attempts to grab the metadata for the
1.243 albertel 6138: resource. Expects the local filesystem pathname
6139: (/home/httpd/html/res/....)
6140:
6141: =back
6142:
6143: =head2 Resource Information
6144:
6145: =over 4
1.191 harris41 6146:
6147: =item *
6148:
1.243 albertel 6149: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
6150: a vairety of different possible values, $varname should be a request
6151: string, and the other parameters can be used to specify who and what
6152: one is asking about.
6153:
6154: Possible values for $varname are environment.lastname (or other item
6155: from the envirnment hash), user.name (or someother aspect about the
6156: user), resource.0.maxtries (or some other part and parameter of a
6157: resource)
1.204 albertel 6158:
6159: =item *
6160:
1.243 albertel 6161: directcondval($number) : get current value of a condition; reads from a state
6162: string
1.204 albertel 6163:
6164: =item *
6165:
1.243 albertel 6166: condval($condidx) : value of condition index based on state
1.204 albertel 6167:
6168: =item *
6169:
1.243 albertel 6170: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
6171: resource's metadata, $what should be either a specific key, or either
6172: 'keys' (to get a list of possible keys) or 'packages' to get a list of
6173: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
6174:
6175: this function automatically caches all requests
1.191 harris41 6176:
6177: =item *
6178:
1.243 albertel 6179: metadata_query($query,$custom,$customshow) : make a metadata query against the
6180: network of library servers; returns file handle of where SQL and regex results
6181: will be stored for query
1.191 harris41 6182:
6183: =item *
6184:
1.243 albertel 6185: symbread($filename) : return symbolic list entry (filename argument optional);
6186: returns the data handle
1.191 harris41 6187:
6188: =item *
6189:
1.243 albertel 6190: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
1.582 albertel 6191: a possible symb for the URL in $thisfn, and if is an encryypted
6192: resource that the user accessed using /enc/ returns a 1 on success, 0
6193: on failure, user must be in a course, as it assumes the existance of
6194: the course initial hash, and uses $ENV('request.course.id'}
1.243 albertel 6195:
1.191 harris41 6196:
6197: =item *
6198:
1.243 albertel 6199: symbclean($symb) : removes versions numbers from a symb, returns the
6200: cleaned symb
1.191 harris41 6201:
6202: =item *
6203:
1.243 albertel 6204: is_on_map($uri) : checks if the $uri is somewhere on the current
6205: course map, user must be in a course for it to work.
1.191 harris41 6206:
6207: =item *
6208:
1.243 albertel 6209: numval($salt) : return random seed value (addend for rndseed)
1.191 harris41 6210:
6211: =item *
6212:
1.243 albertel 6213: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
6214: a random seed, all arguments are optional, if they aren't sent it uses the
6215: environment to derive them. Note: if symb isn't sent and it can't get one
6216: from &symbread it will use the current time as its return value
1.191 harris41 6217:
6218: =item *
6219:
1.243 albertel 6220: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
6221: unfakeable, receipt
1.191 harris41 6222:
6223: =item *
6224:
1.243 albertel 6225: receipt() : API to ireceipt working off of ENV values; given out to users
1.191 harris41 6226:
6227: =item *
6228:
1.243 albertel 6229: countacc($url) : count the number of accesses to a given URL
1.191 harris41 6230:
6231: =item *
6232:
1.243 albertel 6233: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
1.191 harris41 6234:
6235: =item *
6236:
1.243 albertel 6237: checkin($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 $tcrsid)
1.191 harris41 6238:
6239: =item *
6240:
1.243 albertel 6241: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
1.191 harris41 6242:
6243: =item *
6244:
1.243 albertel 6245: devalidate($symb) : devalidate temporary spreadsheet calculations,
6246: forcing spreadsheet to reevaluate the resource scores next time.
6247:
6248: =back
6249:
6250: =head2 Storing/Retreiving Data
6251:
6252: =over 4
1.191 harris41 6253:
6254: =item *
6255:
1.243 albertel 6256: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
6257: for this url; hashref needs to be given and should be a \%hashname; the
6258: remaining args aren't required and if they aren't passed or are '' they will
6259: be derived from the ENV
1.191 harris41 6260:
6261: =item *
6262:
1.243 albertel 6263: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
6264: uses critical subroutine
1.191 harris41 6265:
6266: =item *
6267:
1.243 albertel 6268: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
6269: all args are optional
1.191 harris41 6270:
6271: =item *
6272:
1.243 albertel 6273: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
6274: works very similar to store/cstore, but all data is stored in a
6275: temporary location and can be reset using tmpreset, $storehash should
6276: be a hash reference, returns nothing on success
1.191 harris41 6277:
6278: =item *
6279:
1.243 albertel 6280: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
6281: similar to restore, but all data is stored in a temporary location and
6282: can be reset using tmpreset. Returns a hash of values on success,
6283: error string otherwise.
1.191 harris41 6284:
6285: =item *
6286:
1.243 albertel 6287: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
6288: deltes all keys for $symb form the temporary storage hash.
1.191 harris41 6289:
6290: =item *
6291:
1.243 albertel 6292: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
6293: reference filled in from namesp ($udom and $uname are optional)
1.191 harris41 6294:
6295: =item *
6296:
1.243 albertel 6297: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
6298: namesp ($udom and $uname are optional)
1.191 harris41 6299:
6300: =item *
6301:
1.243 albertel 6302: dump($namespace,$udom,$uname,$regexp) :
6303: dumps the complete (or key matching regexp) namespace into a hash
6304: ($udom, $uname and $regexp are optional)
1.449 matthew 6305:
6306: =item *
6307:
6308: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
6309: $store can be a scalar, an array reference, or if the amount to be
6310: incremented is > 1, a hash reference.
6311:
6312: ($udom and $uname are optional)
1.191 harris41 6313:
6314: =item *
6315:
1.243 albertel 6316: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
6317: ($udom and $uname are optional)
1.191 harris41 6318:
6319: =item *
6320:
1.524 raeburn 6321: putstore($namespace,$storehash,$udomain,$uname) : stores hash in namesp
6322: keys used in storehash include version information (e.g., 1:$symb:message etc.) as
6323: used in records written by &store and retrieved by &restore. This function
6324: was created for use in editing discussion posts, without incrementing the
6325: version number included in the key for a particular post. The colon
6326: separated list of attribute names (e.g., the value associated with the key
6327: 1:keys:$symb) is also generated and passed in the ampersand separated
6328: items sent to lonnet::reply().
6329:
6330: =item *
6331:
1.243 albertel 6332: cput($namespace,$storehash,$udom,$uname) : critical put
6333: ($udom and $uname are optional)
1.191 harris41 6334:
6335: =item *
6336:
1.243 albertel 6337: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
6338: reference filled in from namesp (encrypts the return communication)
6339: ($udom and $uname are optional)
1.191 harris41 6340:
6341: =item *
6342:
1.243 albertel 6343: log($udom,$name,$home,$message) : write to permanent log for user; use
6344: critical subroutine
6345:
6346: =back
6347:
6348: =head2 Network Status Functions
6349:
6350: =over 4
1.191 harris41 6351:
6352: =item *
6353:
6354: dirlist($uri) : return directory list based on URI
6355:
6356: =item *
6357:
1.243 albertel 6358: spareserver() : find server with least workload from spare.tab
6359:
6360: =back
6361:
6362: =head2 Apache Request
6363:
6364: =over 4
1.191 harris41 6365:
6366: =item *
6367:
1.243 albertel 6368: ssi($url,%hash) : server side include, does a complete request cycle on url to
6369: localhost, posts hash
6370:
6371: =back
6372:
6373: =head2 Data to String to Data
6374:
6375: =over 4
1.191 harris41 6376:
6377: =item *
6378:
1.243 albertel 6379: hash2str(%hash) : convert a hash into a string complete with escaping and '='
6380: and '&' separators, supports elements that are arrayrefs and hashrefs
1.191 harris41 6381:
6382: =item *
6383:
1.243 albertel 6384: hashref2str($hashref) : convert a hashref into a string complete with
6385: escaping and '=' and '&' separators, supports elements that are
6386: arrayrefs and hashrefs
1.191 harris41 6387:
6388: =item *
6389:
1.243 albertel 6390: arrayref2str($arrayref) : convert an arrayref into a string complete
6391: with escaping and '&' separators, supports elements that are arrayrefs
6392: and hashrefs
1.191 harris41 6393:
6394: =item *
6395:
1.243 albertel 6396: str2hash($string) : convert string to hash using unescaping and
6397: splitting on '=' and '&', supports elements that are arrayrefs and
6398: hashrefs
1.191 harris41 6399:
6400: =item *
6401:
1.243 albertel 6402: str2array($string) : convert string to hash using unescaping and
6403: splitting on '&', supports elements that are arrayrefs and hashrefs
6404:
6405: =back
6406:
6407: =head2 Logging Routines
6408:
6409: =over 4
6410:
6411: These routines allow one to make log messages in the lonnet.log and
6412: lonnet.perm logfiles.
1.191 harris41 6413:
6414: =item *
6415:
1.243 albertel 6416: logtouch() : make sure the logfile, lonnet.log, exists
1.191 harris41 6417:
6418: =item *
6419:
1.243 albertel 6420: logthis() : append message to the normal lonnet.log file, it gets
6421: preiodically rolled over and deleted.
1.191 harris41 6422:
6423: =item *
6424:
1.243 albertel 6425: logperm() : append a permanent message to lonnet.perm.log, this log
6426: file never gets deleted by any automated portion of the system, only
6427: messages of critical importance should go in here.
6428:
6429: =back
6430:
6431: =head2 General File Helper Routines
6432:
6433: =over 4
1.191 harris41 6434:
6435: =item *
6436:
1.481 raeburn 6437: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
6438: (a) files in /uploaded
6439: (i) If a local copy of the file exists -
6440: compares modification date of local copy with last-modified date for
6441: definitive version stored on home server for course. If local copy is
6442: stale, requests a new version from the home server and stores it.
6443: If the original has been removed from the home server, then local copy
6444: is unlinked.
6445: (ii) If local copy does not exist -
6446: requests the file from the home server and stores it.
6447:
6448: If $caller is 'uploadrep':
6449: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
6450: for request for files originally uploaded via DOCS.
6451: - returns 'ok' if fresh local copy now available, -1 otherwise.
6452:
6453: Otherwise:
6454: This indicates a call from the content generation phase of the request.
6455: - returns the entire contents of the file or -1.
6456:
6457: (b) files in /res
6458: - returns the entire contents of a file or -1;
6459: it properly subscribes to and replicates the file if neccessary.
1.191 harris41 6460:
6461: =item *
6462:
1.243 albertel 6463: filelocation($dir,$file) : returns file system location of a file
6464: based on URI; meant to be "fairly clean" absolute reference, $dir is a
6465: directory that relative $file lookups are to looked in ($dir of /a/dir
6466: and a file of ../bob will become /a/bob)
1.191 harris41 6467:
6468: =item *
6469:
6470: hreflocation($dir,$file) : returns file system location or a URL; same as
6471: filelocation except for hrefs
6472:
6473: =item *
6474:
6475: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
6476:
1.243 albertel 6477: =back
6478:
6479: =head2 HTTP Helper Routines
6480:
6481: =over 4
6482:
1.191 harris41 6483: =item *
6484:
6485: escape() : unpack non-word characters into CGI-compatible hex codes
6486:
6487: =item *
6488:
6489: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
6490:
1.243 albertel 6491: =back
6492:
6493: =head1 PRIVATE SUBROUTINES
6494:
6495: =head2 Underlying communication routines (Shouldn't call)
6496:
6497: =over 4
6498:
6499: =item *
6500:
6501: subreply() : tries to pass a message to lonc, returns con_lost if incapable
6502:
6503: =item *
6504:
6505: reply() : uses subreply to send a message to remote machine, logs all failures
6506:
6507: =item *
6508:
6509: critical() : passes a critical message to another server; if cannot
6510: get through then place message in connection buffer directory and
6511: returns con_delayed, if incapable of saving message, returns
6512: con_failed
6513:
6514: =item *
6515:
6516: reconlonc() : tries to reconnect lonc client processes.
6517:
6518: =back
6519:
6520: =head2 Resource Access Logging
6521:
6522: =over 4
6523:
6524: =item *
6525:
6526: flushcourselogs() : flush (save) buffer logs and access logs
6527:
6528: =item *
6529:
6530: courselog($what) : save message for course in hash
6531:
6532: =item *
6533:
6534: courseacclog($what) : save message for course using &courselog(). Perform
6535: special processing for specific resource types (problems, exams, quizzes, etc).
6536:
1.191 harris41 6537: =item *
6538:
6539: goodbye() : flush course logs and log shutting down; it is called in srm.conf
6540: as a PerlChildExitHandler
1.243 albertel 6541:
6542: =back
6543:
6544: =head2 Other
6545:
6546: =over 4
6547:
6548: =item *
6549:
6550: symblist($mapname,%newhash) : update symbolic storage links
1.191 harris41 6551:
6552: =back
6553:
6554: =cut
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