Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.693
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
1.693 ! albertel 4: # $Id: lonnet.pm,v 1.692 2006/01/10 16:06:07 albertel Exp $
1.178 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.169 harris41 28: ###
29:
1.1 albertel 30: package Apache::lonnet;
31:
32: use strict;
1.8 www 33: use LWP::UserAgent();
1.15 www 34: use HTTP::Headers;
1.486 www 35: use HTTP::Date;
36: # use Date::Parse;
1.11 www 37: use vars
1.599 albertel 38: qw(%perlvar %hostname %badServerCache %iphost %spareid %hostdom
39: %libserv %pr %prp $memcache %packagetab
1.662 raeburn 40: %courselogs %accesshash %userrolehash %domainrolehash $processmarker $dumpcount
1.599 albertel 41: %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseownerbuf
42: %domaindescription %domain_auth_def %domain_auth_arg_def
1.685 raeburn 43: %domain_lang_def %domain_city %domain_longi %domain_lati %domain_primary
44: $tmpdir $_64bit %env);
1.403 www 45:
1.1 albertel 46: use IO::Socket;
1.31 www 47: use GDBM_File;
1.8 www 48: use Apache::Constants qw(:common :http);
1.208 albertel 49: use HTML::LCParser;
1.637 raeburn 50: use HTML::Parser;
1.88 www 51: use Fcntl qw(:flock);
1.557 albertel 52: use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw nfreeze);
1.539 albertel 53: use Time::HiRes qw( gettimeofday tv_interval );
1.599 albertel 54: use Cache::Memcached;
1.676 albertel 55: use Digest::MD5;
56:
1.195 www 57: my $readit;
1.550 foxr 58: my $max_connection_retries = 10; # Or some such value.
1.1 albertel 59:
1.619 albertel 60: require Exporter;
61:
62: our @ISA = qw (Exporter);
63: our @EXPORT = qw(%env);
64:
1.449 matthew 65: =pod
66:
67: =head1 Package Variables
68:
69: These are largely undocumented, so if you decipher one please note it here.
70:
71: =over 4
72:
73: =item $processmarker
74:
75: Contains the time this process was started and this servers host id.
76:
77: =item $dumpcount
78:
79: Counts the number of times a message log flush has been attempted (regardless
80: of success) by this process. Used as part of the filename when messages are
81: delayed.
82:
83: =back
84:
85: =cut
86:
87:
1.1 albertel 88: # --------------------------------------------------------------------- Logging
89:
1.163 harris41 90: sub logtouch {
91: my $execdir=$perlvar{'lonDaemons'};
1.448 albertel 92: unless (-e "$execdir/logs/lonnet.log") {
93: open(my $fh,">>$execdir/logs/lonnet.log");
1.163 harris41 94: close $fh;
95: }
96: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
97: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
98: }
99:
1.1 albertel 100: sub logthis {
101: my $message=shift;
102: my $execdir=$perlvar{'lonDaemons'};
103: my $now=time;
104: my $local=localtime($now);
1.448 albertel 105: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
106: print $fh "$local ($$): $message\n";
107: close($fh);
108: }
1.1 albertel 109: return 1;
110: }
111:
112: sub logperm {
113: my $message=shift;
114: my $execdir=$perlvar{'lonDaemons'};
115: my $now=time;
116: my $local=localtime($now);
1.448 albertel 117: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
118: print $fh "$now:$message:$local\n";
119: close($fh);
120: }
1.1 albertel 121: return 1;
122: }
123:
124: # -------------------------------------------------- Non-critical communication
125: sub subreply {
126: my ($cmd,$server)=@_;
127: my $peerfile="$perlvar{'lonSockDir'}/$server";
1.549 foxr 128: #
129: # With loncnew process trimming, there's a timing hole between lonc server
130: # process exit and the master server picking up the listen on the AF_UNIX
131: # socket. In that time interval, a lock file will exist:
132:
133: my $lockfile=$peerfile.".lock";
134: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
135: sleep(1);
136: }
137: # At this point, either a loncnew parent is listening or an old lonc
1.550 foxr 138: # or loncnew child is listening so we can connect or everything's dead.
1.549 foxr 139: #
1.550 foxr 140: # We'll give the connection a few tries before abandoning it. If
141: # connection is not possible, we'll con_lost back to the client.
142: #
143: my $client;
144: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
145: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
146: Type => SOCK_STREAM,
147: Timeout => 10);
148: if($client) {
149: last; # Connected!
150: }
151: sleep(1); # Try again later if failed connection.
152: }
153: my $answer;
154: if ($client) {
155: print $client "$cmd\n";
156: $answer=<$client>;
157: if (!$answer) { $answer="con_lost"; }
158: chomp($answer);
159: } else {
160: $answer = 'con_lost'; # Failed connection.
161: }
1.1 albertel 162: return $answer;
163: }
164:
165: sub reply {
166: my ($cmd,$server)=@_;
1.205 www 167: unless (defined($hostname{$server})) { return 'no_such_host'; }
1.1 albertel 168: my $answer=subreply($cmd,$server);
1.65 www 169: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.672 albertel 170: &logthis("<font color=\"blue\">WARNING:".
1.12 www 171: " $cmd to $server returned $answer</font>");
172: }
1.1 albertel 173: return $answer;
174: }
175:
176: # ----------------------------------------------------------- Send USR1 to lonc
177:
178: sub reconlonc {
179: my $peerfile=shift;
180: &logthis("Trying to reconnect for $peerfile");
181: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
1.448 albertel 182: if (open(my $fh,"<$loncfile")) {
1.1 albertel 183: my $loncpid=<$fh>;
184: chomp($loncpid);
185: if (kill 0 => $loncpid) {
186: &logthis("lonc at pid $loncpid responding, sending USR1");
187: kill USR1 => $loncpid;
188: sleep 1;
189: if (-e "$peerfile") { return; }
190: &logthis("$peerfile still not there, give it another try");
191: sleep 5;
192: if (-e "$peerfile") { return; }
1.12 www 193: &logthis(
1.672 albertel 194: "<font color=\"blue\">WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 195: } else {
1.12 www 196: &logthis(
1.672 albertel 197: "<font color=\"blue\">WARNING:".
1.12 www 198: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 199: }
200: } else {
1.672 albertel 201: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
1.1 albertel 202: }
203: }
204:
205: # ------------------------------------------------------ Critical communication
1.12 www 206:
1.1 albertel 207: sub critical {
208: my ($cmd,$server)=@_;
1.89 www 209: unless ($hostname{$server}) {
1.672 albertel 210: &logthis("<font color=\"blue\">WARNING:".
1.89 www 211: " Critical message to unknown server ($server)</font>");
212: return 'no_such_host';
213: }
1.1 albertel 214: my $answer=reply($cmd,$server);
215: if ($answer eq 'con_lost') {
216: &reconlonc("$perlvar{'lonSockDir'}/$server");
1.589 albertel 217: my $answer=reply($cmd,$server);
1.1 albertel 218: if ($answer eq 'con_lost') {
219: my $now=time;
220: my $middlename=$cmd;
1.5 www 221: $middlename=substr($middlename,0,16);
1.1 albertel 222: $middlename=~s/\W//g;
223: my $dfilename=
1.305 www 224: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
225: $dumpcount++;
1.1 albertel 226: {
1.448 albertel 227: my $dfh;
228: if (open($dfh,">$dfilename")) {
229: print $dfh "$cmd\n";
230: close($dfh);
231: }
1.1 albertel 232: }
233: sleep 2;
234: my $wcmd='';
235: {
1.448 albertel 236: my $dfh;
237: if (open($dfh,"<$dfilename")) {
238: $wcmd=<$dfh>;
239: close($dfh);
240: }
1.1 albertel 241: }
242: chomp($wcmd);
1.7 www 243: if ($wcmd eq $cmd) {
1.672 albertel 244: &logthis("<font color=\"blue\">WARNING: ".
1.12 www 245: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 246: &logperm("D:$server:$cmd");
247: return 'con_delayed';
248: } else {
1.672 albertel 249: &logthis("<font color=\"red\">CRITICAL:"
1.12 www 250: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 251: &logperm("F:$server:$cmd");
252: return 'con_failed';
253: }
254: }
255: }
256: return $answer;
1.405 albertel 257: }
258:
1.374 www 259: # ------------------------------------------- Transfer profile into environment
260:
261: sub transfer_profile_to_env {
262: my ($lonidsdir,$handle)=@_;
263: my @profile;
264: {
1.448 albertel 265: open(my $idf,"$lonidsdir/$handle.id");
1.374 www 266: flock($idf,LOCK_SH);
267: @profile=<$idf>;
1.448 albertel 268: close($idf);
1.374 www 269: }
270: my $envi;
1.433 matthew 271: my %Remove;
1.374 www 272: for ($envi=0;$envi<=$#profile;$envi++) {
273: chomp($profile[$envi]);
1.690 albertel 274: my ($envname,$envvalue)=split(/=/,$profile[$envi],2);
1.619 albertel 275: $env{$envname} = $envvalue;
1.433 matthew 276: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
277: if ($time < time-300) {
278: $Remove{$key}++;
279: }
280: }
281: }
1.619 albertel 282: $env{'user.environment'} = "$lonidsdir/$handle.id";
1.433 matthew 283: foreach my $expired_key (keys(%Remove)) {
284: &delenv($expired_key);
1.374 www 285: }
1.1 albertel 286: }
287:
1.5 www 288: # ---------------------------------------------------------- Append Environment
289:
290: sub appenv {
1.6 www 291: my %newenv=@_;
1.692 albertel 292: foreach my $key (keys(%newenv)) {
293: if (($newenv{$key}=~/^user\.role/) || ($newenv{$key}=~/^user\.priv/)) {
1.672 albertel 294: &logthis("<font color=\"blue\">WARNING: ".
1.692 albertel 295: "Attempt to modify environment ".$key." to ".$newenv{$key}
1.151 www 296: .'</font>');
1.692 albertel 297: delete($newenv{$key});
1.35 www 298: } else {
1.692 albertel 299: $env{$key}=$newenv{$key};
1.35 www 300: }
1.191 harris41 301: }
1.95 www 302:
303: my $lockfh;
1.620 albertel 304: unless (open($lockfh,"$env{'user.environment'}")) {
1.448 albertel 305: return 'error: '.$!;
1.95 www 306: }
307: unless (flock($lockfh,LOCK_EX)) {
1.672 albertel 308: &logthis("<font color=\"blue\">WARNING: ".
1.95 www 309: 'Could not obtain exclusive lock in appenv: '.$!);
1.448 albertel 310: close($lockfh);
1.95 www 311: return 'error: '.$!;
312: }
313:
1.6 www 314: my @oldenv;
315: {
1.448 albertel 316: my $fh;
1.620 albertel 317: unless (open($fh,"$env{'user.environment'}")) {
1.448 albertel 318: return 'error: '.$!;
319: }
320: @oldenv=<$fh>;
321: close($fh);
1.6 www 322: }
323: for (my $i=0; $i<=$#oldenv; $i++) {
324: chomp($oldenv[$i]);
1.9 www 325: if ($oldenv[$i] ne '') {
1.690 albertel 326: my ($name,$value)=split(/=/,$oldenv[$i],2);
1.448 albertel 327: unless (defined($newenv{$name})) {
328: $newenv{$name}=$value;
329: }
1.9 www 330: }
1.6 www 331: }
332: {
1.448 albertel 333: my $fh;
1.620 albertel 334: unless (open($fh,">$env{'user.environment'}")) {
1.448 albertel 335: return 'error';
336: }
337: my $newname;
338: foreach $newname (keys %newenv) {
339: print $fh "$newname=$newenv{$newname}\n";
340: }
341: close($fh);
1.56 www 342: }
1.448 albertel 343:
344: close($lockfh);
1.56 www 345: return 'ok';
346: }
347: # ----------------------------------------------------- Delete from Environment
348:
349: sub delenv {
350: my $delthis=shift;
351: my %newenv=();
352: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
1.672 albertel 353: &logthis("<font color=\"blue\">WARNING: ".
1.56 www 354: "Attempt to delete from environment ".$delthis);
355: return 'error';
356: }
357: my @oldenv;
358: {
1.448 albertel 359: my $fh;
1.620 albertel 360: unless (open($fh,"$env{'user.environment'}")) {
1.448 albertel 361: return 'error';
362: }
363: unless (flock($fh,LOCK_SH)) {
1.672 albertel 364: &logthis("<font color=\"blue\">WARNING: ".
1.448 albertel 365: 'Could not obtain shared lock in delenv: '.$!);
366: close($fh);
367: return 'error: '.$!;
368: }
369: @oldenv=<$fh>;
370: close($fh);
1.56 www 371: }
372: {
1.448 albertel 373: my $fh;
1.620 albertel 374: unless (open($fh,">$env{'user.environment'}")) {
1.448 albertel 375: return 'error';
376: }
377: unless (flock($fh,LOCK_EX)) {
1.672 albertel 378: &logthis("<font color=\"blue\">WARNING: ".
1.448 albertel 379: 'Could not obtain exclusive lock in delenv: '.$!);
380: close($fh);
381: return 'error: '.$!;
382: }
1.692 albertel 383: foreach my $cur_key (@oldenv) {
384: if ($cur_key=~/^$delthis/) {
385: my ($key,undef) = split('=',$cur_key,2);
1.619 albertel 386: delete($env{$key});
1.473 matthew 387: } else {
1.692 albertel 388: print $fh $cur_key;
1.473 matthew 389: }
1.448 albertel 390: }
391: close($fh);
1.5 www 392: }
393: return 'ok';
1.369 albertel 394: }
395:
396: # ------------------------------------------ Find out current server userload
397: # there is a copy in lond
398: sub userload {
399: my $numusers=0;
400: {
401: opendir(LONIDS,$perlvar{'lonIDsDir'});
402: my $filename;
403: my $curtime=time;
404: while ($filename=readdir(LONIDS)) {
405: if ($filename eq '.' || $filename eq '..') {next;}
1.404 albertel 406: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
1.437 albertel 407: if ($curtime-$mtime < 1800) { $numusers++; }
1.369 albertel 408: }
409: closedir(LONIDS);
410: }
411: my $userloadpercent=0;
412: my $maxuserload=$perlvar{'lonUserLoadLim'};
413: if ($maxuserload) {
1.371 albertel 414: $userloadpercent=100*$numusers/$maxuserload;
1.369 albertel 415: }
1.372 albertel 416: $userloadpercent=sprintf("%.2f",$userloadpercent);
1.369 albertel 417: return $userloadpercent;
1.283 www 418: }
419:
420: # ------------------------------------------ Fight off request when overloaded
421:
422: sub overloaderror {
423: my ($r,$checkserver)=@_;
424: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
425: my $loadavg;
426: if ($checkserver eq $perlvar{'lonHostID'}) {
1.448 albertel 427: open(my $loadfile,'/proc/loadavg');
1.283 www 428: $loadavg=<$loadfile>;
429: $loadavg =~ s/\s.*//g;
1.285 matthew 430: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
1.448 albertel 431: close($loadfile);
1.283 www 432: } else {
433: $loadavg=&reply('load',$checkserver);
434: }
1.285 matthew 435: my $overload=$loadavg-100;
1.283 www 436: if ($overload>0) {
1.285 matthew 437: $r->err_headers_out->{'Retry-After'}=$overload;
1.283 www 438: $r->log_error('Overload of '.$overload.' on '.$checkserver);
1.554 www 439: return 413;
1.283 www 440: }
441: return '';
1.5 www 442: }
1.1 albertel 443:
444: # ------------------------------ Find server with least workload from spare.tab
1.11 www 445:
1.1 albertel 446: sub spareserver {
1.670 albertel 447: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
1.1 albertel 448: my $tryserver;
449: my $spareserver='';
1.370 albertel 450: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
451: my $lowestserver=$loadpercent > $userloadpercent?
452: $loadpercent : $userloadpercent;
1.670 albertel 453: foreach $tryserver (keys(%spareid)) {
454: my $loadans=&reply('load',$tryserver);
455: my $userloadans=&reply('userload',$tryserver);
1.411 albertel 456: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
457: next; #didn't get a number from the server
458: }
459: my $answer;
460: if ($loadans =~ /\d/) {
461: if ($userloadans =~ /\d/) {
462: #both are numbers, pick the bigger one
463: $answer=$loadans > $userloadans?
464: $loadans : $userloadans;
465: } else {
466: $answer = $loadans;
467: }
468: } else {
469: $answer = $userloadans;
470: }
471: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
1.670 albertel 472: if ($want_server_name) {
473: $spareserver=$tryserver;
474: } else {
475: $spareserver="http://$hostname{$tryserver}";
476: }
1.411 albertel 477: $lowestserver=$answer;
478: }
1.370 albertel 479: }
1.1 albertel 480: return $spareserver;
1.202 matthew 481: }
482:
483: # --------------------------------------------- Try to change a user's password
484:
485: sub changepass {
486: my ($uname,$udom,$currentpass,$newpass,$server)=@_;
487: $currentpass = &escape($currentpass);
488: $newpass = &escape($newpass);
489: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass",
490: $server);
491: if (! $answer) {
492: &logthis("No reply on password change request to $server ".
493: "by $uname in domain $udom.");
494: } elsif ($answer =~ "^ok") {
495: &logthis("$uname in $udom successfully changed their password ".
496: "on $server.");
497: } elsif ($answer =~ "^pwchange_failure") {
498: &logthis("$uname in $udom was unable to change their password ".
499: "on $server. The action was blocked by either lcpasswd ".
500: "or pwchange");
501: } elsif ($answer =~ "^non_authorized") {
502: &logthis("$uname in $udom did not get their password correct when ".
503: "attempting to change it on $server.");
504: } elsif ($answer =~ "^auth_mode_error") {
505: &logthis("$uname in $udom attempted to change their password despite ".
506: "not being locally or internally authenticated on $server.");
507: } elsif ($answer =~ "^unknown_user") {
508: &logthis("$uname in $udom attempted to change their password ".
509: "on $server but were unable to because $server is not ".
510: "their home server.");
511: } elsif ($answer =~ "^refused") {
512: &logthis("$server refused to change $uname in $udom password because ".
513: "it was sent an unencrypted request to change the password.");
514: }
515: return $answer;
1.1 albertel 516: }
517:
1.169 harris41 518: # ----------------------- Try to determine user's current authentication scheme
519:
520: sub queryauthenticate {
521: my ($uname,$udom)=@_;
1.456 albertel 522: my $uhome=&homeserver($uname,$udom);
523: if (!$uhome) {
524: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
525: return 'no_host';
526: }
527: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
528: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
529: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.169 harris41 530: }
1.456 albertel 531: return $answer;
1.169 harris41 532: }
533:
1.1 albertel 534: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 535:
1.1 albertel 536: sub authenticate {
537: my ($uname,$upass,$udom)=@_;
1.12 www 538: $upass=escape($upass);
1.199 www 539: $uname=~s/\W//g;
1.471 albertel 540: my $uhome=&homeserver($uname,$udom);
541: if (!$uhome) {
542: &logthis("User $uname at $udom is unknown in authenticate");
543: return 'no_host';
1.1 albertel 544: }
1.471 albertel 545: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
546: if ($answer eq 'authorized') {
547: &logthis("User $uname at $udom authorized by $uhome");
548: return $uhome;
549: }
550: if ($answer eq 'non_authorized') {
551: &logthis("User $uname at $udom rejected by $uhome");
552: return 'no_host';
1.9 www 553: }
1.471 albertel 554: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.1 albertel 555: return 'no_host';
556: }
557:
558: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 559:
1.599 albertel 560: my %homecache;
1.1 albertel 561: sub homeserver {
1.230 stredwic 562: my ($uname,$udom,$ignoreBadCache)=@_;
1.1 albertel 563: my $index="$uname:$udom";
1.426 albertel 564:
1.599 albertel 565: if (exists($homecache{$index})) { return $homecache{$index}; }
1.1 albertel 566: my $tryserver;
567: foreach $tryserver (keys %libserv) {
1.230 stredwic 568: next if ($ignoreBadCache ne 'true' &&
1.231 stredwic 569: exists($badServerCache{$tryserver}));
1.1 albertel 570: if ($hostdom{$tryserver} eq $udom) {
571: my $answer=reply("home:$udom:$uname",$tryserver);
572: if ($answer eq 'found') {
1.599 albertel 573: return $homecache{$index}=$tryserver;
1.231 stredwic 574: } elsif ($answer eq 'no_host') {
575: $badServerCache{$tryserver}=1;
1.221 matthew 576: }
1.1 albertel 577: }
578: }
579: return 'no_host';
1.70 www 580: }
581:
582: # ------------------------------------- Find the usernames behind a list of IDs
583:
584: sub idget {
585: my ($udom,@ids)=@_;
586: my %returnhash=();
587:
588: my $tryserver;
589: foreach $tryserver (keys %libserv) {
590: if ($hostdom{$tryserver} eq $udom) {
591: my $idlist=join('&',@ids);
592: $idlist=~tr/A-Z/a-z/;
593: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
594: my @answer=();
1.76 www 595: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 596: @answer=split(/\&/,$reply);
597: } ;
598: my $i;
599: for ($i=0;$i<=$#ids;$i++) {
600: if ($answer[$i]) {
601: $returnhash{$ids[$i]}=$answer[$i];
602: }
603: }
604: }
605: }
606: return %returnhash;
607: }
608:
609: # ------------------------------------- Find the IDs behind a list of usernames
610:
611: sub idrget {
612: my ($udom,@unames)=@_;
613: my %returnhash=();
1.191 harris41 614: foreach (@unames) {
1.70 www 615: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
1.191 harris41 616: }
1.70 www 617: return %returnhash;
618: }
619:
620: # ------------------------------- Store away a list of names and associated IDs
621:
622: sub idput {
623: my ($udom,%ids)=@_;
624: my %servers=();
1.191 harris41 625: foreach (keys %ids) {
1.487 albertel 626: &cput('environment',{'id'=>$ids{$_}},$udom,$_);
1.70 www 627: my $uhom=&homeserver($_,$udom);
628: if ($uhom ne 'no_host') {
629: my $id=&escape($ids{$_});
630: $id=~tr/A-Z/a-z/;
631: my $unam=&escape($_);
632: if ($servers{$uhom}) {
633: $servers{$uhom}.='&'.$id.'='.$unam;
634: } else {
635: $servers{$uhom}=$id.'='.$unam;
636: }
637: }
1.191 harris41 638: }
639: foreach (keys %servers) {
1.70 www 640: &critical('idput:'.$udom.':'.$servers{$_},$_);
1.191 harris41 641: }
1.344 www 642: }
643:
644: # --------------------------------------------------- Assign a key to a student
645:
646: sub assign_access_key {
1.364 www 647: #
648: # a valid key looks like uname:udom#comments
649: # comments are being appended
650: #
1.498 www 651: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
652: $kdom=
1.620 albertel 653: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1.498 www 654: $knum=
1.620 albertel 655: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1.344 www 656: $cdom=
1.620 albertel 657: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1.344 www 658: $cnum=
1.620 albertel 659: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
660: $udom=$env{'user.name'} unless (defined($udom));
661: $uname=$env{'user.domain'} unless (defined($uname));
1.498 www 662: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1.364 www 663: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1.479 albertel 664: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1.364 www 665: # assigned to this person
666: # - this should not happen,
1.345 www 667: # unless something went wrong
668: # the first time around
669: # ready to assign
1.364 www 670: $logentry=$1.'; '.$logentry;
1.496 www 671: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1.498 www 672: $kdom,$knum) eq 'ok') {
1.345 www 673: # key now belongs to user
1.346 www 674: my $envkey='key.'.$cdom.'_'.$cnum;
1.345 www 675: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
676: &appenv('environment.'.$envkey => $ckey);
677: return 'ok';
678: } else {
679: return
680: 'error: Count not permanently assign key, will need to be re-entered later.';
681: }
682: } else {
683: return 'error: Could not assign key, try again later.';
684: }
1.364 www 685: } elsif (!$existing{$ckey}) {
1.345 www 686: # the key does not exist
687: return 'error: The key does not exist';
688: } else {
689: # the key is somebody else's
690: return 'error: The key is already in use';
691: }
1.344 www 692: }
693:
1.364 www 694: # ------------------------------------------ put an additional comment on a key
695:
696: sub comment_access_key {
697: #
698: # a valid key looks like uname:udom#comments
699: # comments are being appended
700: #
701: my ($ckey,$cdom,$cnum,$logentry)=@_;
702: $cdom=
1.620 albertel 703: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1.364 www 704: $cnum=
1.620 albertel 705: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1.364 www 706: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
707: if ($existing{$ckey}) {
708: $existing{$ckey}.='; '.$logentry;
709: # ready to assign
1.367 www 710: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1.364 www 711: $cdom,$cnum) eq 'ok') {
712: return 'ok';
713: } else {
714: return 'error: Count not store comment.';
715: }
716: } else {
717: # the key does not exist
718: return 'error: The key does not exist';
719: }
720: }
721:
1.344 www 722: # ------------------------------------------------------ Generate a set of keys
723:
724: sub generate_access_keys {
1.364 www 725: my ($number,$cdom,$cnum,$logentry)=@_;
1.344 www 726: $cdom=
1.620 albertel 727: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1.344 www 728: $cnum=
1.620 albertel 729: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1.361 www 730: unless (&allowed('mky',$cdom)) { return 0; }
1.344 www 731: unless (($cdom) && ($cnum)) { return 0; }
732: if ($number>10000) { return 0; }
733: sleep(2); # make sure don't get same seed twice
734: srand(time()^($$+($$<<15))); # from "Programming Perl"
735: my $total=0;
736: for (my $i=1;$i<=$number;$i++) {
737: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
738: sprintf("%lx",int(100000*rand)).'-'.
739: sprintf("%lx",int(100000*rand));
740: $newkey=~s/1/g/g; # folks mix up 1 and l
741: $newkey=~s/0/h/g; # and also 0 and O
742: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
743: if ($existing{$newkey}) {
744: $i--;
745: } else {
1.364 www 746: if (&put('accesskeys',
747: { $newkey => '# generated '.localtime().
1.620 albertel 748: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1.364 www 749: '; '.$logentry },
750: $cdom,$cnum) eq 'ok') {
1.344 www 751: $total++;
752: }
753: }
754: }
1.620 albertel 755: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1.344 www 756: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
757: return $total;
758: }
759:
760: # ------------------------------------------------------- Validate an accesskey
761:
762: sub validate_access_key {
763: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
764: $cdom=
1.620 albertel 765: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1.344 www 766: $cnum=
1.620 albertel 767: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
768: $udom=$env{'user.domain'} unless (defined($udom));
769: $uname=$env{'user.name'} unless (defined($uname));
1.345 www 770: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1.479 albertel 771: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1.70 www 772: }
773:
774: # ------------------------------------- Find the section of student in a course
1.652 albertel 775: sub devalidate_getsection_cache {
776: my ($udom,$unam,$courseid)=@_;
777: $courseid=~s/\_/\//g;
778: $courseid=~s/^(\w)/\/$1/;
779: my $hashid="$udom:$unam:$courseid";
780: &devalidate_cache_new('getsection',$hashid);
781: }
1.298 matthew 782:
783: sub getsection {
784: my ($udom,$unam,$courseid)=@_;
1.599 albertel 785: my $cachetime=1800;
1.298 matthew 786: $courseid=~s/\_/\//g;
787: $courseid=~s/^(\w)/\/$1/;
1.551 albertel 788:
789: my $hashid="$udom:$unam:$courseid";
1.599 albertel 790: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1.551 albertel 791: if (defined($cached)) { return $result; }
792:
1.298 matthew 793: my %Pending;
794: my %Expired;
795: #
796: # Each role can either have not started yet (pending), be active,
797: # or have expired.
798: #
799: # If there is an active role, we are done.
800: #
801: # If there is more than one role which has not started yet,
802: # choose the one which will start sooner
803: # If there is one role which has not started yet, return it.
804: #
805: # If there is more than one expired role, choose the one which ended last.
806: # If there is a role which has expired, return it.
807: #
808: foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
809: &homeserver($unam,$udom)))) {
810: my ($key,$value)=split(/\=/,$_);
811: $key=&unescape($key);
1.479 albertel 812: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1.298 matthew 813: my $section=$1;
814: if ($key eq $courseid.'_st') { $section=''; }
815: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
816: my $now=time;
1.548 albertel 817: if (defined($end) && $end && ($now > $end)) {
1.298 matthew 818: $Expired{$end}=$section;
819: next;
820: }
1.548 albertel 821: if (defined($start) && $start && ($now < $start)) {
1.298 matthew 822: $Pending{$start}=$section;
823: next;
824: }
1.599 albertel 825: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1.298 matthew 826: }
827: #
828: # Presumedly there will be few matching roles from the above
829: # loop and the sorting time will be negligible.
830: if (scalar(keys(%Pending))) {
831: my ($time) = sort {$a <=> $b} keys(%Pending);
1.599 albertel 832: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1.298 matthew 833: }
834: if (scalar(keys(%Expired))) {
835: my @sorted = sort {$a <=> $b} keys(%Expired);
836: my $time = pop(@sorted);
1.599 albertel 837: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1.298 matthew 838: }
1.599 albertel 839: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1.298 matthew 840: }
1.70 www 841:
1.599 albertel 842: sub save_cache {
1.628 albertel 843: my ($r)=@_;
844: if (! $r->is_initial_req()) { return DECLINED; }
1.599 albertel 845: &purge_remembered();
1.620 albertel 846: undef(%env);
1.628 albertel 847: return OK;
1.599 albertel 848: }
1.452 albertel 849:
1.599 albertel 850: my $to_remember=-1;
851: my %remembered;
852: my %accessed;
853: my $kicks=0;
854: my $hits=0;
855: sub devalidate_cache_new {
856: my ($name,$id,$debug) = @_;
857: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
858: $id=&escape($name.':'.$id);
859: $memcache->delete($id);
860: delete($remembered{$id});
861: delete($accessed{$id});
862: }
863:
864: sub is_cached_new {
865: my ($name,$id,$debug) = @_;
866: $id=&escape($name.':'.$id);
867: if (exists($remembered{$id})) {
868: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
869: $accessed{$id}=[&gettimeofday()];
870: $hits++;
871: return ($remembered{$id},1);
872: }
873: my $value = $memcache->get($id);
874: if (!(defined($value))) {
875: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1.417 albertel 876: return (undef,undef);
1.416 albertel 877: }
1.599 albertel 878: if ($value eq '__undef__') {
879: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
880: $value=undef;
881: }
882: &make_room($id,$value,$debug);
883: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
884: return ($value,1);
885: }
886:
887: sub do_cache_new {
888: my ($name,$id,$value,$time,$debug) = @_;
889: $id=&escape($name.':'.$id);
890: my $setvalue=$value;
891: if (!defined($setvalue)) {
892: $setvalue='__undef__';
893: }
1.623 albertel 894: if (!defined($time) ) {
895: $time=600;
896: }
1.599 albertel 897: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1.600 albertel 898: $memcache->set($id,$setvalue,$time);
899: # need to make a copy of $value
900: #&make_room($id,$value,$debug);
1.599 albertel 901: return $value;
902: }
903:
904: sub make_room {
905: my ($id,$value,$debug)=@_;
906: $remembered{$id}=$value;
907: if ($to_remember<0) { return; }
908: $accessed{$id}=[&gettimeofday()];
909: if (scalar(keys(%remembered)) <= $to_remember) { return; }
910: my $to_kick;
911: my $max_time=0;
912: foreach my $other (keys(%accessed)) {
913: if (&tv_interval($accessed{$other}) > $max_time) {
914: $to_kick=$other;
915: $max_time=&tv_interval($accessed{$other});
916: }
917: }
918: delete($remembered{$to_kick});
919: delete($accessed{$to_kick});
920: $kicks++;
921: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1.541 albertel 922: return;
923: }
924:
1.599 albertel 925: sub purge_remembered {
1.604 albertel 926: #&logthis("Tossing ".scalar(keys(%remembered)));
927: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1.599 albertel 928: undef(%remembered);
929: undef(%accessed);
1.428 albertel 930: }
1.70 www 931: # ------------------------------------- Read an entry from a user's environment
932:
933: sub userenvironment {
934: my ($udom,$unam,@what)=@_;
935: my %returnhash=();
936: my @answer=split(/\&/,
937: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
938: &homeserver($unam,$udom)));
939: my $i;
940: for ($i=0;$i<=$#what;$i++) {
941: $returnhash{$what[$i]}=&unescape($answer[$i]);
942: }
943: return %returnhash;
1.1 albertel 944: }
945:
1.617 albertel 946: # ---------------------------------------------------------- Get a studentphoto
947: sub studentphoto {
948: my ($udom,$unam,$ext) = @_;
949: my $home=&Apache::lonnet::homeserver($unam,$udom);
950: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext",$home);
951: my $url="/uploaded/$udom/$unam/internal/studentphoto.".$ext;
952: if ($ret ne 'ok') {
953: return '/adm/lonKaputt/lonlogo_broken.gif';
954: }
955: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
956: return $tokenurl;
957: }
958:
1.263 www 959: # -------------------------------------------------------------------- New chat
960:
961: sub chatsend {
962: my ($newentry,$anon)=@_;
1.620 albertel 963: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
964: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
965: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1.263 www 966: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1.620 albertel 967: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1.263 www 968: &escape($newentry)),$chome);
1.292 www 969: }
970:
971: # ------------------------------------------ Find current version of a resource
972:
973: sub getversion {
974: my $fname=&clutter(shift);
975: unless ($fname=~/^\/res\//) { return -1; }
976: return ¤tversion(&filelocation('',$fname));
977: }
978:
979: sub currentversion {
980: my $fname=shift;
1.599 albertel 981: my ($result,$cached)=&is_cached_new('resversion',$fname);
1.440 www 982: if (defined($cached)) { return $result; }
1.292 www 983: my $author=$fname;
984: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
985: my ($udom,$uname)=split(/\//,$author);
986: my $home=homeserver($uname,$udom);
987: if ($home eq 'no_host') {
988: return -1;
989: }
990: my $answer=reply("currentversion:$fname",$home);
991: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
992: return -1;
993: }
1.599 albertel 994: return &do_cache_new('resversion',$fname,$answer,600);
1.263 www 995: }
996:
1.1 albertel 997: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 998:
1.1 albertel 999: sub subscribe {
1000: my $fname=shift;
1.312 www 1001: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1.532 albertel 1002: $fname=~s/[\n\r]//g;
1.1 albertel 1003: my $author=$fname;
1004: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1005: my ($udom,$uname)=split(/\//,$author);
1006: my $home=homeserver($uname,$udom);
1.335 albertel 1007: if ($home eq 'no_host') {
1008: return 'not_found';
1.1 albertel 1009: }
1010: my $answer=reply("sub:$fname",$home);
1.64 www 1011: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1012: $answer.=' by '.$home;
1013: }
1.1 albertel 1014: return $answer;
1015: }
1016:
1.8 www 1017: # -------------------------------------------------------------- Replicate file
1018:
1019: sub repcopy {
1020: my $filename=shift;
1.23 www 1021: $filename=~s/\/+/\//g;
1.607 raeburn 1022: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1023: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1.538 albertel 1024: if ($filename=~m|^/home/httpd/html/userfiles/| or
1.609 banghart 1025: $filename=~m -^/*(uploaded|editupload)/-) {
1.538 albertel 1026: return &repcopy_userfile($filename);
1027: }
1.532 albertel 1028: $filename=~s/[\n\r]//g;
1.8 www 1029: my $transname="$filename.in.transfer";
1.607 raeburn 1030: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1.8 www 1031: my $remoteurl=subscribe($filename);
1.64 www 1032: if ($remoteurl =~ /^con_lost by/) {
1033: &logthis("Subscribe returned $remoteurl: $filename");
1.607 raeburn 1034: return 'unavailable';
1.8 www 1035: } elsif ($remoteurl eq 'not_found') {
1.441 albertel 1036: #&logthis("Subscribe returned not_found: $filename");
1.607 raeburn 1037: return 'not_found';
1.64 www 1038: } elsif ($remoteurl =~ /^rejected by/) {
1039: &logthis("Subscribe returned $remoteurl: $filename");
1.607 raeburn 1040: return 'forbidden';
1.20 www 1041: } elsif ($remoteurl eq 'directory') {
1.607 raeburn 1042: return 'ok';
1.8 www 1043: } else {
1.290 www 1044: my $author=$filename;
1045: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1046: my ($udom,$uname)=split(/\//,$author);
1047: my $home=homeserver($uname,$udom);
1048: unless ($home eq $perlvar{'lonHostID'}) {
1.8 www 1049: my @parts=split(/\//,$filename);
1050: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1051: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1052: &logthis("Malconfiguration for replication: $filename");
1.607 raeburn 1053: return 'bad_request';
1.8 www 1054: }
1055: my $count;
1056: for ($count=5;$count<$#parts;$count++) {
1057: $path.="/$parts[$count]";
1058: if ((-e $path)!=1) {
1059: mkdir($path,0777);
1060: }
1061: }
1062: my $ua=new LWP::UserAgent;
1063: my $request=new HTTP::Request('GET',"$remoteurl");
1064: my $response=$ua->request($request,$transname);
1065: if ($response->is_error()) {
1066: unlink($transname);
1067: my $message=$response->status_line;
1.672 albertel 1068: &logthis("<font color=\"blue\">WARNING:"
1.12 www 1069: ." LWP get: $message: $filename</font>");
1.607 raeburn 1070: return 'unavailable';
1.8 www 1071: } else {
1.16 www 1072: if ($remoteurl!~/\.meta$/) {
1073: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1074: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1075: if ($mresponse->is_error()) {
1076: unlink($filename.'.meta');
1077: &logthis(
1.672 albertel 1078: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1.16 www 1079: }
1080: }
1.8 www 1081: rename($transname,$filename);
1.607 raeburn 1082: return 'ok';
1.8 www 1083: }
1.290 www 1084: }
1.8 www 1085: }
1.330 www 1086: }
1087:
1088: # ------------------------------------------------ Get server side include body
1089: sub ssi_body {
1.381 albertel 1090: my ($filelink,%form)=@_;
1.606 matthew 1091: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1092: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1093: }
1.330 www 1094: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1.381 albertel 1095: &ssi($filelink,%form));
1.565 albertel 1096: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+// END LON-CAPA Internal\s*(-->)?\s||gs;
1.451 albertel 1097: $output=~s/^.*?\<body[^\>]*\>//si;
1098: $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
1.330 www 1099: return $output;
1.8 www 1100: }
1101:
1.15 www 1102: # --------------------------------------------------------- Server Side Include
1103:
1104: sub ssi {
1105:
1.23 www 1106: my ($fn,%form)=@_;
1.15 www 1107:
1108: my $ua=new LWP::UserAgent;
1.23 www 1109:
1110: my $request;
1111:
1112: if (%form) {
1113: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
1.201 albertel 1114: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1.23 www 1115: } else {
1116: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
1117: }
1118:
1.15 www 1119: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1120: my $response=$ua->request($request);
1121:
1.324 www 1122: return $response->content;
1123: }
1124:
1125: sub externalssi {
1126: my ($url)=@_;
1127: my $ua=new LWP::UserAgent;
1128: my $request=new HTTP::Request('GET',$url);
1129: my $response=$ua->request($request);
1.15 www 1130: return $response->content;
1131: }
1.254 www 1132:
1.492 albertel 1133: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1134:
1135: sub allowuploaded {
1136: my ($srcurl,$url)=@_;
1137: $url=&clutter(&declutter($url));
1138: my $dir=$url;
1139: $dir=~s/\/[^\/]+$//;
1140: my %httpref=();
1141: my $httpurl=&hreflocation('',$url);
1142: $httpref{'httpref.'.$httpurl}=$srcurl;
1143: &Apache::lonnet::appenv(%httpref);
1.254 www 1144: }
1.477 raeburn 1145:
1.478 albertel 1146: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1.638 albertel 1147: # input: action, courseID, current domain, intended
1.637 raeburn 1148: # path to file, source of file, instruction to parse file for objects,
1149: # ref to hash for embedded objects,
1150: # ref to hash for codebase of java objects.
1151: #
1.485 raeburn 1152: # output: url to file (if action was uploaddoc),
1153: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1.477 raeburn 1154: #
1.478 albertel 1155: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1156: # course.
1.477 raeburn 1157: #
1.478 albertel 1158: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1159: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1160: # course's home server.
1.477 raeburn 1161: #
1.478 albertel 1162: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1163: # be copied from $source (current location) to
1164: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1165: # and will then be copied to
1166: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1167: # course's home server.
1.485 raeburn 1168: #
1.481 raeburn 1169: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1.620 albertel 1170: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1.481 raeburn 1171: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1172: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1173: # in course's home server.
1.637 raeburn 1174: #
1.477 raeburn 1175:
1176: sub process_coursefile {
1.638 albertel 1177: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1.477 raeburn 1178: my $fetchresult;
1.638 albertel 1179: my $home=&homeserver($docuname,$docudom);
1.477 raeburn 1180: if ($action eq 'propagate') {
1.638 albertel 1181: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1182: $home);
1.481 raeburn 1183: } else {
1.477 raeburn 1184: my $fpath = '';
1185: my $fname = $file;
1.478 albertel 1186: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1.477 raeburn 1187: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1.637 raeburn 1188: my $filepath = &build_filepath($fpath);
1.481 raeburn 1189: if ($action eq 'copy') {
1190: if ($source eq '') {
1191: $fetchresult = 'no source file';
1192: return $fetchresult;
1193: } else {
1194: my $destination = $filepath.'/'.$fname;
1195: rename($source,$destination);
1196: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1.638 albertel 1197: $home);
1.481 raeburn 1198: }
1199: } elsif ($action eq 'uploaddoc') {
1200: open(my $fh,'>'.$filepath.'/'.$fname);
1.620 albertel 1201: print $fh $env{'form.'.$source};
1.481 raeburn 1202: close($fh);
1.637 raeburn 1203: if ($parser eq 'parse') {
1204: my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);
1205: unless ($parse_result eq 'ok') {
1206: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1207: }
1208: }
1.477 raeburn 1209: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1.638 albertel 1210: $home);
1.481 raeburn 1211: if ($fetchresult eq 'ok') {
1212: return '/uploaded/'.$fpath.'/'.$fname;
1213: } else {
1214: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1.638 albertel 1215: ' to host '.$home.': '.$fetchresult);
1.481 raeburn 1216: return '/adm/notfound.html';
1217: }
1.477 raeburn 1218: }
1219: }
1.485 raeburn 1220: unless ( $fetchresult eq 'ok') {
1.477 raeburn 1221: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1.638 albertel 1222: ' to host '.$home.': '.$fetchresult);
1.477 raeburn 1223: }
1224: return $fetchresult;
1225: }
1226:
1.637 raeburn 1227: sub build_filepath {
1228: my ($fpath) = @_;
1229: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1230: unless ($fpath eq '') {
1231: my @parts=split('/',$fpath);
1232: foreach my $part (@parts) {
1233: $filepath.= '/'.$part;
1234: if ((-e $filepath)!=1) {
1235: mkdir($filepath,0777);
1236: }
1237: }
1238: }
1239: return $filepath;
1240: }
1241:
1242: sub store_edited_file {
1.638 albertel 1243: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1.637 raeburn 1244: my $file = $primary_url;
1245: $file =~ s#^/uploaded/$docudom/$docuname/##;
1246: my $fpath = '';
1247: my $fname = $file;
1248: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1249: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1250: my $filepath = &build_filepath($fpath);
1251: open(my $fh,'>'.$filepath.'/'.$fname);
1252: print $fh $content;
1253: close($fh);
1.638 albertel 1254: my $home=&homeserver($docuname,$docudom);
1.637 raeburn 1255: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1.638 albertel 1256: $home);
1.637 raeburn 1257: if ($$fetchresult eq 'ok') {
1258: return '/uploaded/'.$fpath.'/'.$fname;
1259: } else {
1.638 albertel 1260: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1261: ' to host '.$home.': '.$$fetchresult);
1.637 raeburn 1262: return '/adm/notfound.html';
1263: }
1264: }
1265:
1.531 albertel 1266: sub clean_filename {
1267: my ($fname)=@_;
1.315 www 1268: # Replace Windows backslashes by forward slashes
1.257 www 1269: $fname=~s/\\/\//g;
1.315 www 1270: # Get rid of everything but the actual filename
1.257 www 1271: $fname=~s/^.*\/([^\/]+)$/$1/;
1.315 www 1272: # Replace spaces by underscores
1273: $fname=~s/\s+/\_/g;
1274: # Replace all other weird characters by nothing
1.317 www 1275: $fname=~s/[^\w\.\-]//g;
1.540 albertel 1276: # Replace all .\d. sequences with _\d. so they no longer look like version
1277: # numbers
1278: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1.531 albertel 1279: return $fname;
1280: }
1281:
1.608 albertel 1282: # --------------- Take an uploaded file and put it into the userfiles directory
1.686 albertel 1283: # input: $formname - the contents of the file are in $env{"form.$formname"}
1284: # the desired filenam is in $env{"form.$formname"}
1285: # $coursedoc - if true up to the current course
1286: # if false
1287: # $subdir - directory in userfile to store the file into
1288: # $parser, $allfiles, $codebase - unknown
1289: #
1290: # output: url of file in userspace, or error: <message>
1291: # or /adm/notfound.html if failure to upload occurse
1.608 albertel 1292:
1293:
1.531 albertel 1294: sub userfileupload {
1.637 raeburn 1295: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase)=@_;
1.531 albertel 1296: if (!defined($subdir)) { $subdir='unknown'; }
1.620 albertel 1297: my $fname=$env{'form.'.$formname.'.filename'};
1.531 albertel 1298: $fname=&clean_filename($fname);
1.315 www 1299: # See if there is anything left
1.257 www 1300: unless ($fname) { return 'error: no uploaded file'; }
1.620 albertel 1301: chop($env{'form.'.$formname});
1.523 raeburn 1302: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1303: my $now = time;
1304: my $filepath = 'tmp/helprequests/'.$now;
1305: my @parts=split(/\//,$filepath);
1306: my $fullpath = $perlvar{'lonDaemons'};
1307: for (my $i=0;$i<@parts;$i++) {
1308: $fullpath .= '/'.$parts[$i];
1309: if ((-e $fullpath)!=1) {
1310: mkdir($fullpath,0777);
1311: }
1312: }
1313: open(my $fh,'>'.$fullpath.'/'.$fname);
1.620 albertel 1314: print $fh $env{'form.'.$formname};
1.523 raeburn 1315: close($fh);
1316: return $fullpath.'/'.$fname;
1317: }
1.258 www 1318: # Create the directory if not present
1.493 albertel 1319: $fname="$subdir/$fname";
1.259 www 1320: if ($coursedoc) {
1.638 albertel 1321: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1322: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.646 raeburn 1323: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
1.638 albertel 1324: return &finishuserfileupload($docuname,$docudom,
1325: $formname,$fname,$parser,$allfiles,
1326: $codebase);
1.481 raeburn 1327: } else {
1.620 albertel 1328: $fname=$env{'form.folder'}.'/'.$fname;
1.638 albertel 1329: return &process_coursefile('uploaddoc',$docuname,$docudom,
1330: $fname,$formname,$parser,
1331: $allfiles,$codebase);
1.481 raeburn 1332: }
1.259 www 1333: } else {
1.638 albertel 1334: my $docuname=$env{'user.name'};
1335: my $docudom=$env{'user.domain'};
1336: return &finishuserfileupload($docuname,$docudom,$formname,
1337: $fname,$parser,$allfiles,$codebase);
1.259 www 1338: }
1.271 www 1339: }
1340:
1341: sub finishuserfileupload {
1.638 albertel 1342: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase) = @_;
1.477 raeburn 1343: my $path=$docudom.'/'.$docuname.'/';
1.258 www 1344: my $filepath=$perlvar{'lonDocRoot'};
1.494 albertel 1345: my ($fnamepath,$file);
1346: $file=$fname;
1347: if ($fname=~m|/|) {
1348: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1349: $path.=$fnamepath.'/';
1350: }
1.259 www 1351: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
1.258 www 1352: my $count;
1353: for ($count=4;$count<=$#parts;$count++) {
1354: $filepath.="/$parts[$count]";
1355: if ((-e $filepath)!=1) {
1356: mkdir($filepath,0777);
1357: }
1358: }
1359: # Save the file
1360: {
1.570 albertel 1361: open(FH,'>'.$filepath.'/'.$file);
1.620 albertel 1362: print FH $env{'form.'.$formname};
1.570 albertel 1363: close(FH);
1.258 www 1364: }
1.637 raeburn 1365: if ($parser eq 'parse') {
1.638 albertel 1366: my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,
1367: $codebase);
1.637 raeburn 1368: unless ($parse_result eq 'ok') {
1.638 albertel 1369: &logthis('Failed to parse '.$filepath.$file.
1370: ' for embedded media: '.$parse_result);
1.637 raeburn 1371: }
1372: }
1.259 www 1373: # Notify homeserver to grep it
1374: #
1.638 albertel 1375: my $docuhome=&homeserver($docuname,$docudom);
1.494 albertel 1376: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
1.295 www 1377: if ($fetchresult eq 'ok') {
1.259 www 1378: #
1.258 www 1379: # Return the URL to it
1.494 albertel 1380: return '/uploaded/'.$path.$file;
1.263 www 1381: } else {
1.494 albertel 1382: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
1383: ': '.$fetchresult);
1.263 www 1384: return '/adm/notfound.html';
1385: }
1.493 albertel 1386: }
1387:
1.637 raeburn 1388: sub extract_embedded_items {
1.648 raeburn 1389: my ($filepath,$file,$allfiles,$codebase,$content) = @_;
1.637 raeburn 1390: my @state = ();
1391: my %javafiles = (
1392: codebase => '',
1393: code => '',
1394: archive => ''
1395: );
1396: my %mediafiles = (
1397: src => '',
1398: movie => '',
1399: );
1.648 raeburn 1400: my $p;
1401: if ($content) {
1402: $p = HTML::LCParser->new($content);
1403: } else {
1404: $p = HTML::LCParser->new($filepath.'/'.$file);
1405: }
1.641 albertel 1406: while (my $t=$p->get_token()) {
1.640 albertel 1407: if ($t->[0] eq 'S') {
1408: my ($tagname, $attr) = ($t->[1],$t->[2]);
1409: push (@state, $tagname);
1.648 raeburn 1410: if (lc($tagname) eq 'allow') {
1411: &add_filetype($allfiles,$attr->{'src'},'src');
1412: }
1.640 albertel 1413: if (lc($tagname) eq 'img') {
1414: &add_filetype($allfiles,$attr->{'src'},'src');
1415: }
1.645 raeburn 1416: if (lc($tagname) eq 'script') {
1417: if ($attr->{'archive'} =~ /\.jar$/i) {
1418: &add_filetype($allfiles,$attr->{'archive'},'archive');
1419: } else {
1420: &add_filetype($allfiles,$attr->{'src'},'src');
1421: }
1422: }
1423: if (lc($tagname) eq 'link') {
1424: if (lc($attr->{'rel'}) eq 'stylesheet') {
1425: &add_filetype($allfiles,$attr->{'href'},'href');
1426: }
1427: }
1.640 albertel 1428: if (lc($tagname) eq 'object' ||
1429: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
1430: foreach my $item (keys(%javafiles)) {
1431: $javafiles{$item} = '';
1432: }
1433: }
1434: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
1435: my $name = lc($attr->{'name'});
1436: foreach my $item (keys(%javafiles)) {
1437: if ($name eq $item) {
1438: $javafiles{$item} = $attr->{'value'};
1439: last;
1440: }
1441: }
1442: foreach my $item (keys(%mediafiles)) {
1443: if ($name eq $item) {
1444: &add_filetype($allfiles, $attr->{'value'}, 'value');
1445: last;
1446: }
1447: }
1448: }
1449: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
1450: foreach my $item (keys(%javafiles)) {
1451: if ($attr->{$item}) {
1452: $javafiles{$item} = $attr->{$item};
1453: last;
1454: }
1455: }
1456: foreach my $item (keys(%mediafiles)) {
1457: if ($attr->{$item}) {
1458: &add_filetype($allfiles,$attr->{$item},$item);
1459: last;
1460: }
1461: }
1462: }
1463: } elsif ($t->[0] eq 'E') {
1464: my ($tagname) = ($t->[1]);
1465: if ($javafiles{'codebase'} ne '') {
1466: $javafiles{'codebase'} .= '/';
1467: }
1468: if (lc($tagname) eq 'applet' ||
1469: lc($tagname) eq 'object' ||
1470: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
1471: ) {
1472: foreach my $item (keys(%javafiles)) {
1473: if ($item ne 'codebase' && $javafiles{$item} ne '') {
1474: my $file=$javafiles{'codebase'}.$javafiles{$item};
1475: &add_filetype($allfiles,$file,$item);
1476: }
1477: }
1478: }
1479: pop @state;
1480: }
1481: }
1.637 raeburn 1482: return 'ok';
1483: }
1484:
1.639 albertel 1485: sub add_filetype {
1486: my ($allfiles,$file,$type)=@_;
1487: if (exists($allfiles->{$file})) {
1488: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
1489: push(@{$allfiles->{$file}}, &escape($type));
1490: }
1491: } else {
1492: @{$allfiles->{$file}} = (&escape($type));
1.637 raeburn 1493: }
1494: }
1495:
1.493 albertel 1496: sub removeuploadedurl {
1497: my ($url)=@_;
1498: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
1.613 albertel 1499: return &removeuserfile($uname,$udom,$fname);
1.490 albertel 1500: }
1501:
1502: sub removeuserfile {
1503: my ($docuname,$docudom,$fname)=@_;
1504: my $home=&homeserver($docuname,$docudom);
1505: return &reply("removeuserfile:$docudom/$docuname/$fname",$home);
1.257 www 1506: }
1.15 www 1507:
1.530 albertel 1508: sub mkdiruserfile {
1509: my ($docuname,$docudom,$dir)=@_;
1510: my $home=&homeserver($docuname,$docudom);
1511: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
1512: }
1513:
1.531 albertel 1514: sub renameuserfile {
1515: my ($docuname,$docudom,$old,$new)=@_;
1516: my $home=&homeserver($docuname,$docudom);
1517: return &reply("renameuserfile:$docudom:$docuname:".&escape("$old").':'.
1518: &escape("$new"),$home);
1519: }
1520:
1.14 www 1521: # ------------------------------------------------------------------------- Log
1522:
1523: sub log {
1524: my ($dom,$nam,$hom,$what)=@_;
1.47 www 1525: return critical("log:$dom:$nam:$what",$hom);
1.157 www 1526: }
1527:
1528: # ------------------------------------------------------------------ Course Log
1.352 www 1529: #
1530: # This routine flushes several buffers of non-mission-critical nature
1531: #
1.157 www 1532:
1533: sub flushcourselogs {
1.352 www 1534: &logthis('Flushing log buffers');
1535: #
1536: # course logs
1537: # This is a log of all transactions in a course, which can be used
1538: # for data mining purposes
1539: #
1540: # It also collects the courseid database, which lists last transaction
1541: # times and course titles for all courseids
1542: #
1543: my %courseidbuffer=();
1.191 harris41 1544: foreach (keys %courselogs) {
1.157 www 1545: my $crsid=$_;
1.352 www 1546: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
1.188 www 1547: &escape($courselogs{$crsid}),
1548: $coursehombuf{$crsid}) eq 'ok') {
1.157 www 1549: delete $courselogs{$crsid};
1550: } else {
1551: &logthis('Failed to flush log buffer for '.$crsid);
1552: if (length($courselogs{$crsid})>40000) {
1.672 albertel 1553: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
1.157 www 1554: " exceeded maximum size, deleting.</font>");
1555: delete $courselogs{$crsid};
1556: }
1.352 www 1557: }
1558: if ($courseidbuffer{$coursehombuf{$crsid}}) {
1559: $courseidbuffer{$coursehombuf{$crsid}}.='&'.
1.516 raeburn 1560: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1.571 raeburn 1561: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid});
1.352 www 1562: } else {
1563: $courseidbuffer{$coursehombuf{$crsid}}=
1.516 raeburn 1564: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1.571 raeburn 1565: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid});
1566: }
1.191 harris41 1567: }
1.352 www 1568: #
1569: # Write course id database (reverse lookup) to homeserver of courses
1570: # Is used in pickcourse
1571: #
1572: foreach (keys %courseidbuffer) {
1.353 www 1573: &courseidput($hostdom{$_},$courseidbuffer{$_},$_);
1.352 www 1574: }
1575: #
1576: # File accesses
1577: # Writes to the dynamic metadata of resources to get hit counts, etc.
1578: #
1.449 matthew 1579: foreach my $entry (keys(%accesshash)) {
1.458 matthew 1580: if ($entry =~ /___count$/) {
1581: my ($dom,$name);
1582: ($dom,$name,undef)=($entry=~m:___(\w+)/(\w+)/(.*)___count$:);
1583: if (! defined($dom) || $dom eq '' ||
1584: ! defined($name) || $name eq '') {
1.620 albertel 1585: my $cid = $env{'request.course.id'};
1586: $dom = $env{'request.'.$cid.'.domain'};
1587: $name = $env{'request.'.$cid.'.num'};
1.458 matthew 1588: }
1.450 matthew 1589: my $value = $accesshash{$entry};
1590: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
1591: my %temphash=($url => $value);
1.449 matthew 1592: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
1593: if ($result eq 'ok') {
1594: delete $accesshash{$entry};
1595: } elsif ($result eq 'unknown_cmd') {
1596: # Target server has old code running on it.
1.450 matthew 1597: my %temphash=($entry => $value);
1.449 matthew 1598: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1599: delete $accesshash{$entry};
1600: }
1601: }
1602: } else {
1.458 matthew 1603: my ($dom,$name) = ($entry=~m:___(\w+)/(\w+)/(.*)___(\w+)$:);
1.450 matthew 1604: my %temphash=($entry => $accesshash{$entry});
1.449 matthew 1605: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1606: delete $accesshash{$entry};
1607: }
1.185 www 1608: }
1.191 harris41 1609: }
1.352 www 1610: #
1611: # Roles
1612: # Reverse lookup of user roles for course faculty/staff and co-authorship
1613: #
1.349 www 1614: foreach (keys %userrolehash) {
1615: my $entry=$_;
1.351 www 1616: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
1.349 www 1617: split(/\:/,$entry);
1618: if (&Apache::lonnet::put('nohist_userroles',
1.351 www 1619: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
1.349 www 1620: $rudom,$runame) eq 'ok') {
1621: delete $userrolehash{$entry};
1622: }
1623: }
1.662 raeburn 1624: #
1625: # Reverse lookup of domain roles (dc, ad, li, sc, au)
1626: #
1627: my %domrolebuffer = ();
1628: foreach my $entry (keys %domainrolehash) {
1629: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split/:/,$entry;
1630: if ($domrolebuffer{$rudom}) {
1631: $domrolebuffer{$rudom}.='&'.&escape($entry).
1632: '='.&escape($domainrolehash{$entry});
1633: } else {
1634: $domrolebuffer{$rudom}.=&escape($entry).
1635: '='.&escape($domainrolehash{$entry});
1636: }
1637: delete $domainrolehash{$entry};
1638: }
1639: foreach my $dom (keys(%domrolebuffer)) {
1640: foreach my $tryserver (keys %libserv) {
1641: if ($hostdom{$tryserver} eq $dom) {
1642: unless (&reply('domroleput:'.$dom.':'.
1643: $domrolebuffer{$dom},$tryserver) eq 'ok') {
1644: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
1645: }
1646: }
1647: }
1648: }
1.186 www 1649: $dumpcount++;
1.157 www 1650: }
1651:
1652: sub courselog {
1653: my $what=shift;
1.158 www 1654: $what=time.':'.$what;
1.620 albertel 1655: unless ($env{'request.course.id'}) { return ''; }
1656: $coursedombuf{$env{'request.course.id'}}=
1657: $env{'course.'.$env{'request.course.id'}.'.domain'};
1658: $coursenumbuf{$env{'request.course.id'}}=
1659: $env{'course.'.$env{'request.course.id'}.'.num'};
1660: $coursehombuf{$env{'request.course.id'}}=
1661: $env{'course.'.$env{'request.course.id'}.'.home'};
1662: $coursedescrbuf{$env{'request.course.id'}}=
1663: $env{'course.'.$env{'request.course.id'}.'.description'};
1664: $courseinstcodebuf{$env{'request.course.id'}}=
1665: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
1666: $courseownerbuf{$env{'request.course.id'}}=
1667: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
1668: if (defined $courselogs{$env{'request.course.id'}}) {
1669: $courselogs{$env{'request.course.id'}}.='&'.$what;
1.157 www 1670: } else {
1.620 albertel 1671: $courselogs{$env{'request.course.id'}}.=$what;
1.157 www 1672: }
1.620 albertel 1673: if (length($courselogs{$env{'request.course.id'}})>4048) {
1.157 www 1674: &flushcourselogs();
1675: }
1.158 www 1676: }
1677:
1678: sub courseacclog {
1679: my $fnsymb=shift;
1.620 albertel 1680: unless ($env{'request.course.id'}) { return ''; }
1681: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
1.657 albertel 1682: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
1.187 www 1683: $what.=':POST';
1.583 matthew 1684: # FIXME: Probably ought to escape things....
1.620 albertel 1685: foreach (keys %env) {
1.158 www 1686: if ($_=~/^form\.(.*)/) {
1.620 albertel 1687: $what.=':'.$1.'='.$env{$_};
1.158 www 1688: }
1.191 harris41 1689: }
1.583 matthew 1690: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
1691: # FIXME: We should not be depending on a form parameter that someone
1692: # editing lonsearchcat.pm might change in the future.
1.620 albertel 1693: if ($env{'form.phase'} eq 'course_search') {
1.583 matthew 1694: $what.= ':POST';
1695: # FIXME: Probably ought to escape things....
1696: foreach my $element ('courseexp','crsfulltext','crsrelated',
1697: 'crsdiscuss') {
1.620 albertel 1698: $what.=':'.$element.'='.$env{'form.'.$element};
1.583 matthew 1699: }
1700: }
1.158 www 1701: }
1702: &courselog($what);
1.149 www 1703: }
1704:
1.185 www 1705: sub countacc {
1706: my $url=&declutter(shift);
1.458 matthew 1707: return if (! defined($url) || $url eq '');
1.620 albertel 1708: unless ($env{'request.course.id'}) { return ''; }
1709: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
1.281 www 1710: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
1.450 matthew 1711: $accesshash{$key}++;
1.185 www 1712: }
1.349 www 1713:
1.361 www 1714: sub linklog {
1715: my ($from,$to)=@_;
1716: $from=&declutter($from);
1717: $to=&declutter($to);
1718: $accesshash{$from.'___'.$to.'___comefrom'}=1;
1719: $accesshash{$to.'___'.$from.'___goto'}=1;
1720: }
1721:
1.349 www 1722: sub userrolelog {
1723: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
1.661 raeburn 1724: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
1.662 raeburn 1725: ($trole=~/^in/) || ($trole=~/^cc/) ||
1.661 raeburn 1726: ($trole=~/^ep/) || ($trole=~/^cr/) ||
1727: ($trole=~/^ta/)) {
1.350 www 1728: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
1729: $userrolehash
1730: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
1.349 www 1731: =$tend.':'.$tstart;
1.662 raeburn 1732: }
1733: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
1734: ($trole=~/^li/) || ($trole=~/^li/) ||
1735: ($trole=~/^au/) || ($trole=~/^dg/) ||
1736: ($trole=~/^sc/)) {
1737: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
1738: $domainrolehash
1739: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
1740: = $tend.':'.$tstart;
1741: }
1.351 www 1742: }
1743:
1744: sub get_course_adv_roles {
1745: my $cid=shift;
1.620 albertel 1746: $cid=$env{'request.course.id'} unless (defined($cid));
1.351 www 1747: my %coursehash=&coursedescription($cid);
1.470 www 1748: my %nothide=();
1749: foreach (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
1750: $nothide{join(':',split(/[\@\:]/,$_))}=1;
1751: }
1.351 www 1752: my %returnhash=();
1753: my %dumphash=
1754: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
1755: my $now=time;
1756: foreach (keys %dumphash) {
1757: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1758: if (($tstart) && ($tstart<0)) { next; }
1759: if (($tend) && ($tend<$now)) { next; }
1760: if (($tstart) && ($now<$tstart)) { next; }
1761: my ($role,$username,$domain,$section)=split(/\:/,$_);
1.576 albertel 1762: if ($username eq '' || $domain eq '') { next; }
1.470 www 1763: if ((&privileged($username,$domain)) &&
1764: (!$nothide{$username.':'.$domain})) { next; }
1.656 albertel 1765: if ($role eq 'cr') { next; }
1.351 www 1766: my $key=&plaintext($role);
1.656 albertel 1767: if ($role =~ /^cr/) {
1768: $key=(split('/',$role))[3];
1769: }
1.351 www 1770: if ($section) { $key.=' (Sec/Grp '.$section.')'; }
1771: if ($returnhash{$key}) {
1772: $returnhash{$key}.=','.$username.':'.$domain;
1773: } else {
1774: $returnhash{$key}=$username.':'.$domain;
1775: }
1.400 www 1776: }
1777: return %returnhash;
1778: }
1779:
1780: sub get_my_roles {
1781: my ($uname,$udom)=@_;
1.620 albertel 1782: unless (defined($uname)) { $uname=$env{'user.name'}; }
1783: unless (defined($udom)) { $udom=$env{'user.domain'}; }
1.400 www 1784: my %dumphash=
1785: &dump('nohist_userroles',$udom,$uname);
1786: my %returnhash=();
1787: my $now=time;
1788: foreach (keys %dumphash) {
1789: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1790: if (($tstart) && ($tstart<0)) { next; }
1791: if (($tend) && ($tend<$now)) { next; }
1792: if (($tstart) && ($now<$tstart)) { next; }
1793: my ($role,$username,$domain,$section)=split(/\:/,$_);
1794: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
1.373 www 1795: }
1796: return %returnhash;
1.399 www 1797: }
1798:
1799: # ----------------------------------------------------- Frontpage Announcements
1800: #
1801: #
1802:
1803: sub postannounce {
1804: my ($server,$text)=@_;
1805: unless (&allowed('psa',$hostdom{$server})) { return 'refused'; }
1806: unless ($text=~/\w/) { $text=''; }
1807: return &reply('setannounce:'.&escape($text),$server);
1808: }
1809:
1810: sub getannounce {
1.448 albertel 1811:
1812: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
1.399 www 1813: my $announcement='';
1814: while (<$fh>) { $announcement .=$_; }
1.448 albertel 1815: close($fh);
1.399 www 1816: if ($announcement=~/\w/) {
1817: return
1818: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
1.518 albertel 1819: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
1.399 www 1820: } else {
1821: return '';
1822: }
1823: } else {
1824: return '';
1825: }
1.351 www 1826: }
1.353 www 1827:
1828: # ---------------------------------------------------------- Course ID routines
1829: # Deal with domain's nohist_courseid.db files
1830: #
1831:
1832: sub courseidput {
1833: my ($domain,$what,$coursehome)=@_;
1834: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
1835: }
1836:
1837: sub courseiddump {
1.622 raeburn 1838: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$coursefilter,$hostidflag,$hostidref)=@_;
1.353 www 1839: my %returnhash=();
1.355 www 1840: unless ($domfilter) { $domfilter=''; }
1.353 www 1841: foreach my $tryserver (keys %libserv) {
1.511 raeburn 1842: if ( ($hostidflag == 1 && grep/^$tryserver$/,@{$hostidref}) || (!defined($hostidflag)) ) {
1.506 raeburn 1843: if ((!$domfilter) || ($hostdom{$tryserver} eq $domfilter)) {
1844: foreach (
1845: split(/\&/,&reply('courseiddump:'.$hostdom{$tryserver}.':'.
1.571 raeburn 1846: $sincefilter.':'.&escape($descfilter).':'.
1.622 raeburn 1847: &escape($instcodefilter).':'.&escape($ownerfilter).':'.&escape($coursefilter),
1.354 www 1848: $tryserver))) {
1.506 raeburn 1849: my ($key,$value)=split(/\=/,$_);
1850: if (($key) && ($value)) {
1.516 raeburn 1851: $returnhash{&unescape($key)}=$value;
1.506 raeburn 1852: }
1.353 www 1853: }
1854: }
1855: }
1856: }
1857: return %returnhash;
1858: }
1859:
1.658 raeburn 1860: # ---------------------------------------------------------- DC e-mail
1.662 raeburn 1861:
1862: sub dcmailput {
1.685 raeburn 1863: my ($domain,$msgid,$message,$server)=@_;
1.662 raeburn 1864: my $status = &Apache::lonnet::critical(
1865: 'dcmailput:'.$domain.':'.&Apache::lonnet::escape($msgid).'='.
1.685 raeburn 1866: &Apache::lonnet::escape($message),$server);
1.662 raeburn 1867: return $status;
1868: }
1869:
1.658 raeburn 1870: sub dcmaildump {
1871: my ($dom,$startdate,$enddate,$senders) = @_;
1.685 raeburn 1872: my %returnhash=();
1873: if (exists($domain_primary{$dom})) {
1874: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
1875: &escape($enddate).':';
1876: my @esc_senders=map { &escape($_)} @$senders;
1877: $cmd.=&escape(join('&',@esc_senders));
1878: foreach (split(/\&/,&reply($cmd,$domain_primary{$dom}))) {
1879: my ($key,$value) = split(/\=/,$_);
1880: if (($key) && ($value)) {
1881: $returnhash{&unescape($key)} = &unescape($value);
1.658 raeburn 1882: }
1883: }
1884: }
1885: return %returnhash;
1886: }
1.662 raeburn 1887: # ---------------------------------------------------------- Domain roles
1888:
1889: sub get_domain_roles {
1890: my ($dom,$roles,$startdate,$enddate)=@_;
1891: if (undef($startdate) || $startdate eq '') {
1892: $startdate = '.';
1893: }
1894: if (undef($enddate) || $enddate eq '') {
1895: $enddate = '.';
1896: }
1897: my $rolelist = join(':',@{$roles});
1898: my %personnel = ();
1899: foreach my $tryserver (keys(%libserv)) {
1900: if ($hostdom{$tryserver} eq $dom) {
1901: %{$personnel{$tryserver}}=();
1902: foreach (
1903: split(/\&/,&reply('domrolesdump:'.$dom.':'.
1904: &escape($startdate).':'.&escape($enddate).':'.
1905: &escape($rolelist), $tryserver))) {
1906: my($key,$value) = split(/\=/,$_);
1907: if (($key) && ($value)) {
1908: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
1909: }
1910: }
1911: }
1912: }
1913: return %personnel;
1914: }
1.658 raeburn 1915:
1.149 www 1916: # ----------------------------------------------------------- Check out an item
1917:
1.504 albertel 1918: sub get_first_access {
1919: my ($type,$argsymb)=@_;
1920: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1921: if ($argsymb) { $symb=$argsymb; }
1922: my ($map,$id,$res)=&decode_symb($symb);
1.588 albertel 1923: if ($type eq 'map') {
1924: $res=&symbread($map);
1925: } else {
1926: $res=$symb;
1927: }
1928: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
1929: return $times{"$courseid\0$res"};
1.504 albertel 1930: }
1931:
1932: sub set_first_access {
1933: my ($type)=@_;
1934: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1935: my ($map,$id,$res)=&decode_symb($symb);
1.588 albertel 1936: if ($type eq 'map') {
1937: $res=&symbread($map);
1938: } else {
1939: $res=$symb;
1940: }
1941: my $firstaccess=&get_first_access($type,$symb);
1.505 albertel 1942: if (!$firstaccess) {
1.588 albertel 1943: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
1.505 albertel 1944: }
1945: return 'already_set';
1.504 albertel 1946: }
1947:
1.149 www 1948: sub checkout {
1949: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1950: my $now=time;
1951: my $lonhost=$perlvar{'lonHostID'};
1952: my $infostr=&escape(
1.234 www 1953: 'CHECKOUTTOKEN&'.
1.149 www 1954: $tuname.'&'.
1955: $tudom.'&'.
1956: $tcrsid.'&'.
1957: $symb.'&'.
1958: $now.'&'.$ENV{'REMOTE_ADDR'});
1959: my $token=&reply('tmpput:'.$infostr,$lonhost);
1.151 www 1960: if ($token=~/^error\:/) {
1.672 albertel 1961: &logthis("<font color=\"blue\">WARNING: ".
1.151 www 1962: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
1963: "</font>");
1964: return '';
1965: }
1966:
1.149 www 1967: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
1968: $token=~tr/a-z/A-Z/;
1969:
1.153 www 1970: my %infohash=('resource.0.outtoken' => $token,
1971: 'resource.0.checkouttime' => $now,
1972: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
1.149 www 1973:
1974: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1975: return '';
1.151 www 1976: } else {
1.672 albertel 1977: &logthis("<font color=\"blue\">WARNING: ".
1.151 www 1978: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
1979: "</font>");
1.149 www 1980: }
1981:
1982: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1983: &escape('Checkout '.$infostr.' - '.
1984: $token)) ne 'ok') {
1985: return '';
1.151 www 1986: } else {
1.672 albertel 1987: &logthis("<font color=\"blue\">WARNING: ".
1.151 www 1988: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
1989: "</font>");
1.149 www 1990: }
1.151 www 1991: return $token;
1.149 www 1992: }
1993:
1994: # ------------------------------------------------------------ Check in an item
1995:
1996: sub checkin {
1997: my $token=shift;
1.150 www 1998: my $now=time;
1999: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2000: $lonhost=~tr/A-Z/a-z/;
1.595 albertel 2001: my $dtoken=$ta.'_'.$hostname{$lonhost}.'_'.$tb;
1.150 www 2002: $dtoken=~s/\W/\_/g;
1.234 www 2003: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
1.150 www 2004: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2005:
1.154 www 2006: unless (($tuname) && ($tudom)) {
2007: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2008: return '';
2009: }
2010:
2011: unless (&allowed('mgr',$tcrsid)) {
2012: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
1.620 albertel 2013: $env{'user.name'}.' - '.$env{'user.domain'});
1.154 www 2014: return '';
2015: }
2016:
1.153 www 2017: my %infohash=('resource.0.intoken' => $token,
2018: 'resource.0.checkintime' => $now,
2019: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
1.150 www 2020:
2021: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2022: return '';
2023: }
2024:
2025: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2026: &escape('Checkin - '.$token)) ne 'ok') {
2027: return '';
2028: }
2029:
2030: return ($symb,$tuname,$tudom,$tcrsid);
1.110 www 2031: }
2032:
2033: # --------------------------------------------- Set Expire Date for Spreadsheet
2034:
2035: sub expirespread {
2036: my ($uname,$udom,$stype,$usymb)=@_;
1.620 albertel 2037: my $cid=$env{'request.course.id'};
1.110 www 2038: if ($cid) {
2039: my $now=time;
2040: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
1.620 albertel 2041: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
2042: $env{'course.'.$cid.'.num'}.
1.110 www 2043: ':nohist_expirationdates:'.
2044: &escape($key).'='.$now,
1.620 albertel 2045: $env{'course.'.$cid.'.home'})
1.110 www 2046: }
2047: return 'ok';
1.14 www 2048: }
2049:
1.109 www 2050: # ----------------------------------------------------- Devalidate Spreadsheets
2051:
2052: sub devalidate {
1.325 www 2053: my ($symb,$uname,$udom)=@_;
1.620 albertel 2054: my $cid=$env{'request.course.id'};
1.109 www 2055: if ($cid) {
1.391 matthew 2056: # delete the stored spreadsheets for
2057: # - the student level sheet of this user in course's homespace
2058: # - the assessment level sheet for this resource
2059: # for this user in user's homespace
1.553 albertel 2060: # - current conditional state info
1.325 www 2061: my $key=$uname.':'.$udom.':';
1.109 www 2062: my $status=
1.299 matthew 2063: &del('nohist_calculatedsheets',
1.391 matthew 2064: [$key.'studentcalc:'],
1.620 albertel 2065: $env{'course.'.$cid.'.domain'},
2066: $env{'course.'.$cid.'.num'})
1.133 albertel 2067: .' '.
2068: &del('nohist_calculatedsheets_'.$cid,
1.391 matthew 2069: [$key.'assesscalc:'.$symb],$udom,$uname);
1.109 www 2070: unless ($status eq 'ok ok') {
2071: &logthis('Could not devalidate spreadsheet '.
1.325 www 2072: $uname.' at '.$udom.' for '.
1.109 www 2073: $symb.': '.$status);
1.133 albertel 2074: }
1.553 albertel 2075: &delenv('user.state.'.$cid);
1.109 www 2076: }
2077: }
2078:
1.265 albertel 2079: sub get_scalar {
2080: my ($string,$end) = @_;
2081: my $value;
2082: if ($$string =~ s/^([^&]*?)($end)/$2/) {
2083: $value = $1;
2084: } elsif ($$string =~ s/^([^&]*?)&//) {
2085: $value = $1;
2086: }
2087: return &unescape($value);
2088: }
2089:
2090: sub array2str {
2091: my (@array) = @_;
2092: my $result=&arrayref2str(\@array);
2093: $result=~s/^__ARRAY_REF__//;
2094: $result=~s/__END_ARRAY_REF__$//;
2095: return $result;
2096: }
2097:
1.204 albertel 2098: sub arrayref2str {
2099: my ($arrayref) = @_;
1.265 albertel 2100: my $result='__ARRAY_REF__';
1.204 albertel 2101: foreach my $elem (@$arrayref) {
1.265 albertel 2102: if(ref($elem) eq 'ARRAY') {
2103: $result.=&arrayref2str($elem).'&';
2104: } elsif(ref($elem) eq 'HASH') {
2105: $result.=&hashref2str($elem).'&';
2106: } elsif(ref($elem)) {
2107: #print("Got a ref of ".(ref($elem))." skipping.");
1.204 albertel 2108: } else {
2109: $result.=&escape($elem).'&';
2110: }
2111: }
2112: $result=~s/\&$//;
1.265 albertel 2113: $result .= '__END_ARRAY_REF__';
1.204 albertel 2114: return $result;
2115: }
2116:
1.168 albertel 2117: sub hash2str {
1.204 albertel 2118: my (%hash) = @_;
2119: my $result=&hashref2str(\%hash);
1.265 albertel 2120: $result=~s/^__HASH_REF__//;
2121: $result=~s/__END_HASH_REF__$//;
1.204 albertel 2122: return $result;
2123: }
2124:
2125: sub hashref2str {
2126: my ($hashref)=@_;
1.265 albertel 2127: my $result='__HASH_REF__';
1.495 albertel 2128: foreach (sort(keys(%$hashref))) {
1.204 albertel 2129: if (ref($_) eq 'ARRAY') {
1.265 albertel 2130: $result.=&arrayref2str($_).'=';
1.204 albertel 2131: } elsif (ref($_) eq 'HASH') {
1.265 albertel 2132: $result.=&hashref2str($_).'=';
1.204 albertel 2133: } elsif (ref($_)) {
1.265 albertel 2134: $result.='=';
2135: #print("Got a ref of ".(ref($_))." skipping.");
1.204 albertel 2136: } else {
1.265 albertel 2137: if ($_) {$result.=&escape($_).'=';} else { last; }
1.204 albertel 2138: }
2139:
1.265 albertel 2140: if(ref($hashref->{$_}) eq 'ARRAY') {
2141: $result.=&arrayref2str($hashref->{$_}).'&';
2142: } elsif(ref($hashref->{$_}) eq 'HASH') {
2143: $result.=&hashref2str($hashref->{$_}).'&';
2144: } elsif(ref($hashref->{$_})) {
2145: $result.='&';
2146: #print("Got a ref of ".(ref($hashref->{$_}))." skipping.");
1.204 albertel 2147: } else {
1.265 albertel 2148: $result.=&escape($hashref->{$_}).'&';
1.204 albertel 2149: }
2150: }
1.168 albertel 2151: $result=~s/\&$//;
1.265 albertel 2152: $result .= '__END_HASH_REF__';
1.168 albertel 2153: return $result;
2154: }
2155:
2156: sub str2hash {
1.265 albertel 2157: my ($string)=@_;
2158: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
2159: return %$hash;
2160: }
2161:
2162: sub str2hashref {
1.168 albertel 2163: my ($string) = @_;
1.265 albertel 2164:
2165: my %hash;
2166:
2167: if($string !~ /^__HASH_REF__/) {
2168: if (! ($string eq '' || !defined($string))) {
2169: $hash{'error'}='Not hash reference';
2170: }
2171: return (\%hash, $string);
2172: }
2173:
2174: $string =~ s/^__HASH_REF__//;
2175:
2176: while($string !~ /^__END_HASH_REF__/) {
2177: #key
2178: my $key='';
2179: if($string =~ /^__HASH_REF__/) {
2180: ($key, $string)=&str2hashref($string);
2181: if(defined($key->{'error'})) {
2182: $hash{'error'}='Bad data';
2183: return (\%hash, $string);
2184: }
2185: } elsif($string =~ /^__ARRAY_REF__/) {
2186: ($key, $string)=&str2arrayref($string);
2187: if($key->[0] eq 'Array reference error') {
2188: $hash{'error'}='Bad data';
2189: return (\%hash, $string);
2190: }
2191: } else {
2192: $string =~ s/^(.*?)=//;
1.267 albertel 2193: $key=&unescape($1);
1.265 albertel 2194: }
2195: $string =~ s/^=//;
2196:
2197: #value
2198: my $value='';
2199: if($string =~ /^__HASH_REF__/) {
2200: ($value, $string)=&str2hashref($string);
2201: if(defined($value->{'error'})) {
2202: $hash{'error'}='Bad data';
2203: return (\%hash, $string);
2204: }
2205: } elsif($string =~ /^__ARRAY_REF__/) {
2206: ($value, $string)=&str2arrayref($string);
2207: if($value->[0] eq 'Array reference error') {
2208: $hash{'error'}='Bad data';
2209: return (\%hash, $string);
2210: }
2211: } else {
2212: $value=&get_scalar(\$string,'__END_HASH_REF__');
2213: }
2214: $string =~ s/^&//;
2215:
2216: $hash{$key}=$value;
1.204 albertel 2217: }
1.265 albertel 2218:
2219: $string =~ s/^__END_HASH_REF__//;
2220:
2221: return (\%hash, $string);
1.204 albertel 2222: }
2223:
2224: sub str2array {
1.265 albertel 2225: my ($string)=@_;
2226: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
2227: return @$array;
2228: }
2229:
2230: sub str2arrayref {
1.204 albertel 2231: my ($string) = @_;
1.265 albertel 2232: my @array;
2233:
2234: if($string !~ /^__ARRAY_REF__/) {
2235: if (! ($string eq '' || !defined($string))) {
2236: $array[0]='Array reference error';
2237: }
2238: return (\@array, $string);
2239: }
2240:
2241: $string =~ s/^__ARRAY_REF__//;
2242:
2243: while($string !~ /^__END_ARRAY_REF__/) {
2244: my $value='';
2245: if($string =~ /^__HASH_REF__/) {
2246: ($value, $string)=&str2hashref($string);
2247: if(defined($value->{'error'})) {
2248: $array[0] ='Array reference error';
2249: return (\@array, $string);
2250: }
2251: } elsif($string =~ /^__ARRAY_REF__/) {
2252: ($value, $string)=&str2arrayref($string);
2253: if($value->[0] eq 'Array reference error') {
2254: $array[0] ='Array reference error';
2255: return (\@array, $string);
2256: }
2257: } else {
2258: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
2259: }
2260: $string =~ s/^&//;
2261:
2262: push(@array, $value);
1.191 harris41 2263: }
1.265 albertel 2264:
2265: $string =~ s/^__END_ARRAY_REF__//;
2266:
2267: return (\@array, $string);
1.168 albertel 2268: }
2269:
1.167 albertel 2270: # -------------------------------------------------------------------Temp Store
2271:
1.168 albertel 2272: sub tmpreset {
2273: my ($symb,$namespace,$domain,$stuname) = @_;
2274: if (!$symb) {
2275: $symb=&symbread();
1.620 albertel 2276: if (!$symb) { $symb= $env{'request.url'}; }
1.168 albertel 2277: }
2278: $symb=escape($symb);
2279:
1.620 albertel 2280: if (!$namespace) { $namespace=$env{'request.state'}; }
1.168 albertel 2281: $namespace=~s/\//\_/g;
2282: $namespace=~s/\W//g;
2283:
1.620 albertel 2284: if (!$domain) { $domain=$env{'user.domain'}; }
2285: if (!$stuname) { $stuname=$env{'user.name'}; }
1.591 albertel 2286: if ($domain eq 'public' && $stuname eq 'public') {
2287: $stuname=$ENV{'REMOTE_ADDR'};
2288: }
1.168 albertel 2289: my $path=$perlvar{'lonDaemons'}.'/tmp';
2290: my %hash;
2291: if (tie(%hash,'GDBM_File',
2292: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2293: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2294: foreach my $key (keys %hash) {
1.180 albertel 2295: if ($key=~ /:$symb/) {
1.168 albertel 2296: delete($hash{$key});
2297: }
2298: }
2299: }
2300: }
2301:
1.167 albertel 2302: sub tmpstore {
1.168 albertel 2303: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2304:
2305: if (!$symb) {
2306: $symb=&symbread();
1.620 albertel 2307: if (!$symb) { $symb= $env{'request.url'}; }
1.168 albertel 2308: }
2309: $symb=escape($symb);
2310:
2311: if (!$namespace) {
2312: # I don't think we would ever want to store this for a course.
2313: # it seems this will only be used if we don't have a course.
1.620 albertel 2314: #$namespace=$env{'request.course.id'};
1.168 albertel 2315: #if (!$namespace) {
1.620 albertel 2316: $namespace=$env{'request.state'};
1.168 albertel 2317: #}
2318: }
2319: $namespace=~s/\//\_/g;
2320: $namespace=~s/\W//g;
1.620 albertel 2321: if (!$domain) { $domain=$env{'user.domain'}; }
2322: if (!$stuname) { $stuname=$env{'user.name'}; }
1.591 albertel 2323: if ($domain eq 'public' && $stuname eq 'public') {
2324: $stuname=$ENV{'REMOTE_ADDR'};
2325: }
1.168 albertel 2326: my $now=time;
2327: my %hash;
2328: my $path=$perlvar{'lonDaemons'}.'/tmp';
2329: if (tie(%hash,'GDBM_File',
2330: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2331: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2332: $hash{"version:$symb"}++;
2333: my $version=$hash{"version:$symb"};
2334: my $allkeys='';
2335: foreach my $key (keys(%$storehash)) {
2336: $allkeys.=$key.':';
1.591 albertel 2337: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
1.168 albertel 2338: }
2339: $hash{"$version:$symb:timestamp"}=$now;
2340: $allkeys.='timestamp';
2341: $hash{"$version:keys:$symb"}=$allkeys;
2342: if (untie(%hash)) {
2343: return 'ok';
2344: } else {
2345: return "error:$!";
2346: }
2347: } else {
2348: return "error:$!";
2349: }
2350: }
1.167 albertel 2351:
1.168 albertel 2352: # -----------------------------------------------------------------Temp Restore
1.167 albertel 2353:
1.168 albertel 2354: sub tmprestore {
2355: my ($symb,$namespace,$domain,$stuname) = @_;
1.167 albertel 2356:
1.168 albertel 2357: if (!$symb) {
2358: $symb=&symbread();
1.620 albertel 2359: if (!$symb) { $symb= $env{'request.url'}; }
1.168 albertel 2360: }
2361: $symb=escape($symb);
2362:
1.620 albertel 2363: if (!$namespace) { $namespace=$env{'request.state'}; }
1.591 albertel 2364:
1.620 albertel 2365: if (!$domain) { $domain=$env{'user.domain'}; }
2366: if (!$stuname) { $stuname=$env{'user.name'}; }
1.591 albertel 2367: if ($domain eq 'public' && $stuname eq 'public') {
2368: $stuname=$ENV{'REMOTE_ADDR'};
2369: }
1.168 albertel 2370: my %returnhash;
2371: $namespace=~s/\//\_/g;
2372: $namespace=~s/\W//g;
2373: my %hash;
2374: my $path=$perlvar{'lonDaemons'}.'/tmp';
2375: if (tie(%hash,'GDBM_File',
2376: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2377: &GDBM_READER(),0640)) {
1.168 albertel 2378: my $version=$hash{"version:$symb"};
2379: $returnhash{'version'}=$version;
2380: my $scope;
2381: for ($scope=1;$scope<=$version;$scope++) {
2382: my $vkeys=$hash{"$scope:keys:$symb"};
2383: my @keys=split(/:/,$vkeys);
2384: my $key;
2385: $returnhash{"$scope:keys"}=$vkeys;
2386: foreach $key (@keys) {
1.591 albertel 2387: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
2388: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
1.167 albertel 2389: }
2390: }
1.168 albertel 2391: if (!(untie(%hash))) {
2392: return "error:$!";
2393: }
2394: } else {
2395: return "error:$!";
2396: }
2397: return %returnhash;
1.167 albertel 2398: }
2399:
1.9 www 2400: # ----------------------------------------------------------------------- Store
2401:
2402: sub store {
1.124 www 2403: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2404: my $home='';
2405:
1.168 albertel 2406: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2407:
1.213 www 2408: $symb=&symbclean($symb);
1.122 albertel 2409: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2410:
1.620 albertel 2411: if (!$domain) { $domain=$env{'user.domain'}; }
2412: if (!$stuname) { $stuname=$env{'user.name'}; }
1.325 www 2413:
2414: &devalidate($symb,$stuname,$domain);
1.109 www 2415:
2416: $symb=escape($symb);
1.187 www 2417: if (!$namespace) {
1.620 albertel 2418: unless ($namespace=$env{'request.course.id'}) {
1.187 www 2419: return '';
2420: }
2421: }
1.620 albertel 2422: if (!$home) { $home=$env{'user.home'}; }
1.447 www 2423:
2424: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2425: $$storehash{'host'}=$perlvar{'lonHostID'};
2426:
1.12 www 2427: my $namevalue='';
1.191 harris41 2428: foreach (keys %$storehash) {
1.591 albertel 2429: $namevalue.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2430: }
1.12 www 2431: $namevalue=~s/\&$//;
1.187 www 2432: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
1.124 www 2433: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.9 www 2434: }
2435:
1.47 www 2436: # -------------------------------------------------------------- Critical Store
2437:
2438: sub cstore {
1.124 www 2439: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2440: my $home='';
2441:
1.168 albertel 2442: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2443:
1.213 www 2444: $symb=&symbclean($symb);
1.122 albertel 2445: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2446:
1.620 albertel 2447: if (!$domain) { $domain=$env{'user.domain'}; }
2448: if (!$stuname) { $stuname=$env{'user.name'}; }
1.325 www 2449:
2450: &devalidate($symb,$stuname,$domain);
1.109 www 2451:
2452: $symb=escape($symb);
1.187 www 2453: if (!$namespace) {
1.620 albertel 2454: unless ($namespace=$env{'request.course.id'}) {
1.187 www 2455: return '';
2456: }
2457: }
1.620 albertel 2458: if (!$home) { $home=$env{'user.home'}; }
1.447 www 2459:
2460: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2461: $$storehash{'host'}=$perlvar{'lonHostID'};
1.122 albertel 2462:
1.47 www 2463: my $namevalue='';
1.191 harris41 2464: foreach (keys %$storehash) {
1.591 albertel 2465: $namevalue.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2466: }
1.47 www 2467: $namevalue=~s/\&$//;
1.187 www 2468: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
1.188 www 2469: return critical
2470: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.47 www 2471: }
2472:
1.9 www 2473: # --------------------------------------------------------------------- Restore
2474:
2475: sub restore {
1.124 www 2476: my ($symb,$namespace,$domain,$stuname) = @_;
2477: my $home='';
2478:
1.168 albertel 2479: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2480:
1.122 albertel 2481: if (!$symb) {
2482: unless ($symb=escape(&symbread())) { return ''; }
2483: } else {
1.213 www 2484: $symb=&escape(&symbclean($symb));
1.122 albertel 2485: }
1.188 www 2486: if (!$namespace) {
1.620 albertel 2487: unless ($namespace=$env{'request.course.id'}) {
1.188 www 2488: return '';
2489: }
2490: }
1.620 albertel 2491: if (!$domain) { $domain=$env{'user.domain'}; }
2492: if (!$stuname) { $stuname=$env{'user.name'}; }
2493: if (!$home) { $home=$env{'user.home'}; }
1.122 albertel 2494: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
2495:
1.12 www 2496: my %returnhash=();
1.191 harris41 2497: foreach (split(/\&/,$answer)) {
1.12 www 2498: my ($name,$value)=split(/\=/,$_);
1.591 albertel 2499: $returnhash{&unescape($name)}=&thaw_unescape($value);
1.191 harris41 2500: }
1.75 www 2501: my $version;
2502: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.191 harris41 2503: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1.75 www 2504: $returnhash{$_}=$returnhash{$version.':'.$_};
1.191 harris41 2505: }
1.75 www 2506: }
1.13 www 2507: return %returnhash;
1.34 www 2508: }
2509:
2510: # ---------------------------------------------------------- Course Description
2511:
2512: sub coursedescription {
2513: my $courseid=shift;
2514: $courseid=~s/^\///;
1.49 www 2515: $courseid=~s/\_/\//g;
1.34 www 2516: my ($cdomain,$cnum)=split(/\//,$courseid);
1.129 albertel 2517: my $chome=&homeserver($cnum,$cdomain);
1.302 albertel 2518: my $normalid=$cdomain.'_'.$cnum;
2519: # need to always cache even if we get errors otherwise we keep
2520: # trying and trying and trying to get the course description.
2521: my %envhash=();
2522: my %returnhash=();
2523: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.34 www 2524: if ($chome ne 'no_host') {
1.302 albertel 2525: %returnhash=&dump('environment',$cdomain,$cnum);
1.129 albertel 2526: if (!exists($returnhash{'con_lost'})) {
2527: $returnhash{'home'}= $chome;
2528: $returnhash{'domain'} = $cdomain;
2529: $returnhash{'num'} = $cnum;
1.130 albertel 2530: while (my ($name,$value) = each %returnhash) {
1.53 www 2531: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.129 albertel 2532: }
1.270 www 2533: $returnhash{'url'}=&clutter($returnhash{'url'});
1.34 www 2534: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.620 albertel 2535: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.60 www 2536: $envhash{'course.'.$normalid.'.home'}=$chome;
2537: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
2538: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.34 www 2539: }
2540: }
1.302 albertel 2541: &appenv(%envhash);
2542: return %returnhash;
1.461 www 2543: }
2544:
2545: # -------------------------------------------------See if a user is privileged
2546:
2547: sub privileged {
2548: my ($username,$domain)=@_;
2549: my $rolesdump=&reply("dump:$domain:$username:roles",
2550: &homeserver($username,$domain));
2551: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
2552: my $now=time;
2553: if ($rolesdump ne '') {
2554: foreach (split(/&/,$rolesdump)) {
1.586 albertel 2555: if ($_!~/^rolesdef_/) {
1.461 www 2556: my ($area,$role)=split(/=/,$_);
2557: $area=~s/\_\w\w$//;
2558: my ($trole,$tend,$tstart)=split(/_/,$role);
2559: if (($trole eq 'dc') || ($trole eq 'su')) {
2560: my $active=1;
2561: if ($tend) {
2562: if ($tend<$now) { $active=0; }
2563: }
2564: if ($tstart) {
2565: if ($tstart>$now) { $active=0; }
2566: }
2567: if ($active) { return 1; }
2568: }
2569: }
2570: }
2571: }
2572: return 0;
1.9 www 2573: }
1.1 albertel 2574:
1.103 harris41 2575: # -------------------------------------------------------- Get user privileges
1.11 www 2576:
2577: sub rolesinit {
2578: my ($domain,$username,$authhost)=@_;
2579: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 2580: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 2581: my %allroles=();
1.678 raeburn 2582: my %allgroups=();
1.11 www 2583: my $now=time;
1.21 www 2584: my $userroles="user.login.time=$now\n";
1.678 raeburn 2585: my $group_privs;
1.11 www 2586:
2587: if ($rolesdump ne '') {
1.191 harris41 2588: foreach (split(/&/,$rolesdump)) {
1.586 albertel 2589: if ($_!~/^rolesdef_/) {
1.11 www 2590: my ($area,$role)=split(/=/,$_);
1.587 albertel 2591: $area=~s/\_\w\w$//;
1.678 raeburn 2592: my ($trole,$tend,$tstart,$group_privs);
1.587 albertel 2593: if ($role=~/^cr/) {
1.655 albertel 2594: if ($role=~m|^(cr/\w+/\w+/[a-zA-Z0-9]+)_(.*)$|) {
2595: ($trole,my $trest)=($role=~m|^(cr/\w+/\w+/[a-zA-Z0-9]+)_(.*)$|);
2596: ($tend,$tstart)=split('_',$trest);
2597: } else {
2598: $trole=$role;
2599: }
1.678 raeburn 2600: } elsif ($role =~ m|^gr/|) {
2601: ($trole,$tend,$tstart) = split(/_/,$role);
2602: ($trole,$group_privs) = split(/\//,$trole);
2603: $group_privs = &unescape($group_privs);
1.587 albertel 2604: } else {
2605: ($trole,$tend,$tstart)=split(/_/,$role);
2606: }
1.576 albertel 2607: $userroles.=&set_arearole($trole,$area,$tstart,$tend,$domain,$username);
1.567 raeburn 2608: if (($tend!=0) && ($tend<$now)) { $trole=''; }
2609: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
1.11 www 2610: if (($area ne '') && ($trole ne '')) {
1.347 albertel 2611: my $spec=$trole.'.'.$area;
2612: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
2613: if ($trole =~ /^cr\//) {
1.567 raeburn 2614: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
1.678 raeburn 2615: } elsif ($trole eq 'gr') {
2616: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
1.347 albertel 2617: } else {
1.567 raeburn 2618: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
1.347 albertel 2619: }
1.12 www 2620: }
1.662 raeburn 2621: }
1.191 harris41 2622: }
1.678 raeburn 2623: my ($author,$adv) = &set_userprivs(\$userroles,\%allroles,\%allgroups);
1.128 www 2624: $userroles.='user.adv='.$adv."\n".
2625: 'user.author='.$author."\n";
1.620 albertel 2626: $env{'user.adv'}=$adv;
1.11 www 2627: }
2628: return $userroles;
2629: }
2630:
1.567 raeburn 2631: sub set_arearole {
2632: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
2633: # log the associated role with the area
2634: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
2635: return 'user.role.'.$trole.'.'.$area.'='.$tstart.'.'.$tend."\n";
2636: }
2637:
2638: sub custom_roleprivs {
2639: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
2640: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
2641: my $homsvr=homeserver($rauthor,$rdomain);
2642: if ($hostname{$homsvr} ne '') {
2643: my ($rdummy,$roledef)=
2644: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
2645: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
2646: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
2647: if (defined($syspriv)) {
2648: $$allroles{'cm./'}.=':'.$syspriv;
2649: $$allroles{$spec.'./'}.=':'.$syspriv;
2650: }
2651: if ($tdomain ne '') {
2652: if (defined($dompriv)) {
2653: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
2654: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
2655: }
2656: if (($trest ne '') && (defined($coursepriv))) {
2657: $$allroles{'cm.'.$area}.=':'.$coursepriv;
2658: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
2659: }
2660: }
2661: }
2662: }
2663: }
2664:
1.678 raeburn 2665: sub group_roleprivs {
2666: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
2667: my $access = 1;
2668: my $now = time;
2669: if (($tend!=0) && ($tend<$now)) { $access = 0; }
2670: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
2671: if ($access) {
2672: my ($course,$group) = ($area =~ m|(/\w+/\w+)/([^/]+)$|);
2673: $$allgroups{$course}{$group} .=':'.$group_privs;
2674: }
2675: }
1.567 raeburn 2676:
2677: sub standard_roleprivs {
2678: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
2679: if (defined($pr{$trole.':s'})) {
2680: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
2681: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
2682: }
2683: if ($tdomain ne '') {
2684: if (defined($pr{$trole.':d'})) {
2685: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2686: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2687: }
2688: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
2689: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
2690: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
2691: }
2692: }
2693: }
2694:
2695: sub set_userprivs {
1.678 raeburn 2696: my ($userroles,$allroles,$allgroups) = @_;
1.567 raeburn 2697: my $author=0;
2698: my $adv=0;
1.678 raeburn 2699: my %grouproles = ();
2700: if (keys(%{$allgroups}) > 0) {
2701: foreach my $role (keys %{$allroles}) {
1.681 raeburn 2702: my ($trole,$area,$sec,$extendedarea);
2703: if ($role =~ m|^(\w+)\.(/\w+/\w+)(/?\w*)|) {
1.678 raeburn 2704: $trole = $1;
2705: $area = $2;
1.681 raeburn 2706: $sec = $3;
2707: $extendedarea = $area.$sec;
2708: if (exists($$allgroups{$area})) {
2709: foreach my $group (keys(%{$$allgroups{$area}})) {
2710: my $spec = $trole.'.'.$extendedarea;
2711: $grouproles{$spec.'.'.$area.'/'.$group} =
2712: $$allgroups{$area}{$group};
1.678 raeburn 2713: }
2714: }
2715: }
2716: }
2717: }
2718: foreach (keys(%grouproles)) {
2719: $$allroles{$_} = $grouproles{$_};
2720: }
1.567 raeburn 2721: foreach (keys %{$allroles}) {
2722: my %thesepriv=();
2723: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
2724: foreach (split(/:/,$$allroles{$_})) {
2725: if ($_ ne '') {
2726: my ($privilege,$restrictions)=split(/&/,$_);
2727: if ($restrictions eq '') {
2728: $thesepriv{$privilege}='F';
2729: } elsif ($thesepriv{$privilege} ne 'F') {
2730: $thesepriv{$privilege}.=$restrictions;
2731: }
2732: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
2733: }
2734: }
2735: my $thesestr='';
2736: foreach (keys %thesepriv) { $thesestr.=':'.$_.'&'.$thesepriv{$_}; }
2737: $$userroles.='user.priv.'.$_.'='.$thesestr."\n";
2738: }
2739: return ($author,$adv);
2740: }
2741:
1.12 www 2742: # --------------------------------------------------------------- get interface
2743:
2744: sub get {
1.131 albertel 2745: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2746: my $items='';
1.191 harris41 2747: foreach (@$storearr) {
1.12 www 2748: $items.=escape($_).'&';
1.191 harris41 2749: }
1.12 www 2750: $items=~s/\&$//;
1.620 albertel 2751: if (!$udomain) { $udomain=$env{'user.domain'}; }
2752: if (!$uname) { $uname=$env{'user.name'}; }
1.131 albertel 2753: my $uhome=&homeserver($uname,$udomain);
2754:
1.133 albertel 2755: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2756: my @pairs=split(/\&/,$rep);
1.273 albertel 2757: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2758: return @pairs;
2759: }
1.15 www 2760: my %returnhash=();
1.42 www 2761: my $i=0;
1.191 harris41 2762: foreach (@$storearr) {
1.557 albertel 2763: $returnhash{$_}=&thaw_unescape($pairs[$i]);
1.42 www 2764: $i++;
1.191 harris41 2765: }
1.15 www 2766: return %returnhash;
1.27 www 2767: }
2768:
2769: # --------------------------------------------------------------- del interface
2770:
2771: sub del {
1.133 albertel 2772: my ($namespace,$storearr,$udomain,$uname)=@_;
1.27 www 2773: my $items='';
1.191 harris41 2774: foreach (@$storearr) {
1.27 www 2775: $items.=escape($_).'&';
1.191 harris41 2776: }
1.27 www 2777: $items=~s/\&$//;
1.620 albertel 2778: if (!$udomain) { $udomain=$env{'user.domain'}; }
2779: if (!$uname) { $uname=$env{'user.name'}; }
1.133 albertel 2780: my $uhome=&homeserver($uname,$udomain);
2781:
2782: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2783: }
2784:
2785: # -------------------------------------------------------------- dump interface
2786:
2787: sub dump {
1.193 www 2788: my ($namespace,$udomain,$uname,$regexp)=@_;
1.620 albertel 2789: if (!$udomain) { $udomain=$env{'user.domain'}; }
2790: if (!$uname) { $uname=$env{'user.name'}; }
1.129 albertel 2791: my $uhome=&homeserver($uname,$udomain);
1.193 www 2792: if ($regexp) {
2793: $regexp=&escape($regexp);
2794: } else {
2795: $regexp='.';
2796: }
2797: my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
1.12 www 2798: my @pairs=split(/\&/,$rep);
2799: my %returnhash=();
1.191 harris41 2800: foreach (@pairs) {
1.12 www 2801: my ($key,$value)=split(/=/,$_);
1.557 albertel 2802: $returnhash{unescape($key)}=&thaw_unescape($value);
1.318 matthew 2803: }
2804: return %returnhash;
1.407 www 2805: }
2806:
2807: # -------------------------------------------------------------- keys interface
2808:
2809: sub getkeys {
2810: my ($namespace,$udomain,$uname)=@_;
1.620 albertel 2811: if (!$udomain) { $udomain=$env{'user.domain'}; }
2812: if (!$uname) { $uname=$env{'user.name'}; }
1.407 www 2813: my $uhome=&homeserver($uname,$udomain);
2814: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
2815: my @keyarray=();
2816: foreach (split(/\&/,$rep)) {
2817: push (@keyarray,&unescape($_));
2818: }
2819: return @keyarray;
1.318 matthew 2820: }
2821:
1.319 matthew 2822: # --------------------------------------------------------------- currentdump
2823: sub currentdump {
1.328 matthew 2824: my ($courseid,$sdom,$sname)=@_;
1.620 albertel 2825: $courseid = $env{'request.course.id'} if (! defined($courseid));
2826: $sdom = $env{'user.domain'} if (! defined($sdom));
2827: $sname = $env{'user.name'} if (! defined($sname));
1.326 matthew 2828: my $uhome = &homeserver($sname,$sdom);
2829: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
1.318 matthew 2830: return if ($rep =~ /^(error:|no_such_host)/);
1.319 matthew 2831: #
1.318 matthew 2832: my %returnhash=();
1.319 matthew 2833: #
2834: if ($rep eq "unknown_cmd") {
2835: # an old lond will not know currentdump
2836: # Do a dump and make it look like a currentdump
1.326 matthew 2837: my @tmp = &dump($courseid,$sdom,$sname,'.');
1.319 matthew 2838: return if ($tmp[0] =~ /^(error:|no_such_host)/);
2839: my %hash = @tmp;
2840: @tmp=();
1.424 matthew 2841: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
1.319 matthew 2842: } else {
2843: my @pairs=split(/\&/,$rep);
2844: foreach (@pairs) {
2845: my ($key,$value)=split(/=/,$_);
2846: my ($symb,$param) = split(/:/,$key);
2847: $returnhash{&unescape($symb)}->{&unescape($param)} =
1.557 albertel 2848: &thaw_unescape($value);
1.319 matthew 2849: }
1.191 harris41 2850: }
1.12 www 2851: return %returnhash;
1.424 matthew 2852: }
2853:
2854: sub convert_dump_to_currentdump{
2855: my %hash = %{shift()};
2856: my %returnhash;
2857: # Code ripped from lond, essentially. The only difference
2858: # here is the unescaping done by lonnet::dump(). Conceivably
2859: # we might run in to problems with parameter names =~ /^v\./
2860: while (my ($key,$value) = each(%hash)) {
2861: my ($v,$symb,$param) = split(/:/,$key);
2862: next if ($v eq 'version' || $symb eq 'keys');
2863: next if (exists($returnhash{$symb}) &&
2864: exists($returnhash{$symb}->{$param}) &&
2865: $returnhash{$symb}->{'v.'.$param} > $v);
2866: $returnhash{$symb}->{$param}=$value;
2867: $returnhash{$symb}->{'v.'.$param}=$v;
2868: }
2869: #
2870: # Remove all of the keys in the hashes which keep track of
2871: # the version of the parameter.
2872: while (my ($symb,$param_hash) = each(%returnhash)) {
2873: # use a foreach because we are going to delete from the hash.
2874: foreach my $key (keys(%$param_hash)) {
2875: delete($param_hash->{$key}) if ($key =~ /^v\./);
2876: }
2877: }
2878: return \%returnhash;
1.12 www 2879: }
2880:
1.627 albertel 2881: # ------------------------------------------------------ critical inc interface
2882:
2883: sub cinc {
2884: return &inc(@_,'critical');
2885: }
2886:
1.449 matthew 2887: # --------------------------------------------------------------- inc interface
2888:
2889: sub inc {
1.627 albertel 2890: my ($namespace,$store,$udomain,$uname,$critical) = @_;
1.620 albertel 2891: if (!$udomain) { $udomain=$env{'user.domain'}; }
2892: if (!$uname) { $uname=$env{'user.name'}; }
1.449 matthew 2893: my $uhome=&homeserver($uname,$udomain);
2894: my $items='';
2895: if (! ref($store)) {
2896: # got a single value, so use that instead
2897: $items = &escape($store).'=&';
2898: } elsif (ref($store) eq 'SCALAR') {
2899: $items = &escape($$store).'=&';
2900: } elsif (ref($store) eq 'ARRAY') {
2901: $items = join('=&',map {&escape($_);} @{$store});
2902: } elsif (ref($store) eq 'HASH') {
2903: while (my($key,$value) = each(%{$store})) {
2904: $items.= &escape($key).'='.&escape($value).'&';
2905: }
2906: }
2907: $items=~s/\&$//;
1.627 albertel 2908: if ($critical) {
2909: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
2910: } else {
2911: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
2912: }
1.449 matthew 2913: }
2914:
1.12 www 2915: # --------------------------------------------------------------- put interface
2916:
2917: sub put {
1.134 albertel 2918: my ($namespace,$storehash,$udomain,$uname)=@_;
1.620 albertel 2919: if (!$udomain) { $udomain=$env{'user.domain'}; }
2920: if (!$uname) { $uname=$env{'user.name'}; }
1.134 albertel 2921: my $uhome=&homeserver($uname,$udomain);
1.12 www 2922: my $items='';
1.191 harris41 2923: foreach (keys %$storehash) {
1.557 albertel 2924: $items.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2925: }
1.12 www 2926: $items=~s/\&$//;
1.134 albertel 2927: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1.47 www 2928: }
2929:
1.631 albertel 2930: # ------------------------------------------------------------ newput interface
2931:
2932: sub newput {
2933: my ($namespace,$storehash,$udomain,$uname)=@_;
2934: if (!$udomain) { $udomain=$env{'user.domain'}; }
2935: if (!$uname) { $uname=$env{'user.name'}; }
2936: my $uhome=&homeserver($uname,$udomain);
2937: my $items='';
2938: foreach my $key (keys(%$storehash)) {
2939: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
2940: }
2941: $items=~s/\&$//;
2942: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
2943: }
2944:
2945: # --------------------------------------------------------- putstore interface
2946:
1.524 raeburn 2947: sub putstore {
2948: my ($namespace,$storehash,$udomain,$uname)=@_;
1.620 albertel 2949: if (!$udomain) { $udomain=$env{'user.domain'}; }
2950: if (!$uname) { $uname=$env{'user.name'}; }
1.524 raeburn 2951: my $uhome=&homeserver($uname,$udomain);
2952: my $items='';
2953: my %allitems = ();
2954: foreach (keys %$storehash) {
2955: if ($_ =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
2956: my $key = $1.':keys:'.$2;
2957: $allitems{$key} .= $3.':';
2958: }
1.591 albertel 2959: $items.=$_.'='.&freeze_escape($$storehash{$_}).'&';
1.524 raeburn 2960: }
2961: foreach (keys %allitems) {
2962: $allitems{$_} =~ s/\:$//;
2963: $items.= $_.'='.$allitems{$_}.'&';
2964: }
2965: $items=~s/\&$//;
2966: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
2967: }
2968:
1.47 www 2969: # ------------------------------------------------------ critical put interface
2970:
2971: sub cput {
1.134 albertel 2972: my ($namespace,$storehash,$udomain,$uname)=@_;
1.620 albertel 2973: if (!$udomain) { $udomain=$env{'user.domain'}; }
2974: if (!$uname) { $uname=$env{'user.name'}; }
1.134 albertel 2975: my $uhome=&homeserver($uname,$udomain);
1.47 www 2976: my $items='';
1.191 harris41 2977: foreach (keys %$storehash) {
1.557 albertel 2978: $items.=escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2979: }
1.47 www 2980: $items=~s/\&$//;
1.134 albertel 2981: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2982: }
2983:
2984: # -------------------------------------------------------------- eget interface
2985:
2986: sub eget {
1.133 albertel 2987: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2988: my $items='';
1.191 harris41 2989: foreach (@$storearr) {
1.12 www 2990: $items.=escape($_).'&';
1.191 harris41 2991: }
1.12 www 2992: $items=~s/\&$//;
1.620 albertel 2993: if (!$udomain) { $udomain=$env{'user.domain'}; }
2994: if (!$uname) { $uname=$env{'user.name'}; }
1.133 albertel 2995: my $uhome=&homeserver($uname,$udomain);
2996: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2997: my @pairs=split(/\&/,$rep);
2998: my %returnhash=();
1.42 www 2999: my $i=0;
1.191 harris41 3000: foreach (@$storearr) {
1.557 albertel 3001: $returnhash{$_}=&thaw_unescape($pairs[$i]);
1.42 www 3002: $i++;
1.191 harris41 3003: }
1.12 www 3004: return %returnhash;
3005: }
3006:
1.667 albertel 3007: # ------------------------------------------------------------ tmpput interface
3008: sub tmpput {
3009: my ($storehash,$server)=@_;
3010: my $items='';
3011: foreach (keys(%$storehash)) {
3012: $items.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
3013: }
3014: $items=~s/\&$//;
3015: return &reply("tmpput:$items",$server);
3016: }
3017:
3018: # ------------------------------------------------------------ tmpget interface
3019: sub tmpget {
1.688 albertel 3020: my ($token,$server)=@_;
3021: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3022: my $rep=&reply("tmpget:$token",$server);
1.667 albertel 3023: my %returnhash;
3024: foreach my $item (split(/\&/,$rep)) {
3025: my ($key,$value)=split(/=/,$item);
3026: $returnhash{&unescape($key)}=&thaw_unescape($value);
3027: }
3028: return %returnhash;
3029: }
3030:
1.688 albertel 3031: # ------------------------------------------------------------ tmpget interface
3032: sub tmpdel {
3033: my ($token,$server)=@_;
3034: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3035: return &reply("tmpdel:$token",$server);
3036: }
3037:
1.341 www 3038: # ---------------------------------------------- Custom access rule evaluation
3039:
3040: sub customaccess {
3041: my ($priv,$uri)=@_;
1.620 albertel 3042: my ($urole,$urealm)=split(/\./,$env{'request.role'});
1.343 www 3043: $urealm=~s/^\W//;
3044: my ($udom,$ucrs,$usec)=split(/\//,$urealm);
1.341 www 3045: my $access=0;
3046: foreach (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
1.342 www 3047: my ($effect,$realm,$role)=split(/\:/,$_);
1.343 www 3048: if ($role) {
3049: if ($role ne $urole) { next; }
3050: }
3051: foreach (split(/\s*\,\s*/,$realm)) {
3052: my ($tdom,$tcrs,$tsec)=split(/\_/,$_);
3053: if ($tdom) {
3054: if ($tdom ne $udom) { next; }
3055: }
3056: if ($tcrs) {
3057: if ($tcrs ne $ucrs) { next; }
3058: }
3059: if ($tsec) {
3060: if ($tsec ne $usec) { next; }
3061: }
3062: $access=($effect eq 'allow');
3063: last;
1.342 www 3064: }
1.402 bowersj2 3065: if ($realm eq '' && $role eq '') {
3066: $access=($effect eq 'allow');
3067: }
1.341 www 3068: }
3069: return $access;
3070: }
3071:
1.103 harris41 3072: # ------------------------------------------------- Check for a user privilege
1.12 www 3073:
3074: sub allowed {
1.579 albertel 3075: my ($priv,$uri,$symb)=@_;
1.439 www 3076: $uri=&deversion($uri);
1.152 www 3077: my $orguri=$uri;
1.52 www 3078: $uri=&declutter($uri);
1.545 banghart 3079:
1.620 albertel 3080: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
1.54 www 3081: # Free bre access to adm and meta resources
1.529 albertel 3082: if (((($uri=~/^adm\//) && ($uri !~ m|/bulletinboard$|))
3083: || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 3084: return 'F';
1.159 www 3085: }
3086:
1.545 banghart 3087: # Free bre access to user's own portfolio contents
1.546 albertel 3088: my ($space,$domain,$name,$dir)=split('/',$uri);
1.647 raeburn 3089: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
1.620 albertel 3090: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir)) {
1.545 banghart 3091: return 'F';
3092: }
3093:
1.159 www 3094: # Free bre to public access
3095:
3096: if ($priv eq 'bre') {
1.238 www 3097: my $copyright=&metadata($uri,'copyright');
1.620 albertel 3098: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
1.301 www 3099: return 'F';
3100: }
1.238 www 3101: if ($copyright eq 'priv') {
3102: $uri=~/([^\/]+)\/([^\/]+)\//;
1.620 albertel 3103: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
1.238 www 3104: return '';
3105: }
3106: }
3107: if ($copyright eq 'domain') {
3108: $uri=~/([^\/]+)\/([^\/]+)\//;
1.620 albertel 3109: unless (($env{'user.domain'} eq $1) ||
3110: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
1.238 www 3111: return '';
3112: }
1.262 matthew 3113: }
1.620 albertel 3114: if ($env{'request.role'}=~ /li\.\//) {
1.262 matthew 3115: # Library role, so allow browsing of resources in this domain.
3116: return 'F';
1.238 www 3117: }
1.341 www 3118: if ($copyright eq 'custom') {
3119: unless (&customaccess($priv,$uri)) { return ''; }
3120: }
1.14 www 3121: }
1.264 matthew 3122: # Domain coordinator is trying to create a course
1.620 albertel 3123: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
1.264 matthew 3124: # uri is the requested domain in this case.
3125: # comparison to 'request.role.domain' shows if the user has selected
1.678 raeburn 3126: # a role of dc for the domain in question.
1.620 albertel 3127: return 'F' if ($uri eq $env{'request.role.domain'});
1.264 matthew 3128: }
1.29 www 3129:
1.52 www 3130: my $thisallowed='';
3131: my $statecond=0;
3132: my $courseprivid='';
3133:
3134: # Course
3135:
1.620 albertel 3136: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
1.52 www 3137: $thisallowed.=$1;
3138: }
1.29 www 3139:
1.52 www 3140: # Domain
3141:
1.620 albertel 3142: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1.479 albertel 3143: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 3144: $thisallowed.=$1;
3145: }
1.52 www 3146:
3147: # Course: uri itself is a course
1.66 www 3148: my $courseuri=$uri;
3149: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 3150: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 3151:
1.620 albertel 3152: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
1.479 albertel 3153: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 3154: $thisallowed.=$1;
3155: }
1.29 www 3156:
1.678 raeburn 3157: # Group: uri itself is a group
3158: my $groupuri=$uri;
3159: $groupuri=~s/^([^\/])/\/$1/;
3160: if ($env{'user.priv.'.$env{'request.role'}.'.'.$groupuri}
3161: =~/\Q$priv\E\&([^\:]*)/) {
3162: $thisallowed.=$1;
3163: }
3164:
1.665 albertel 3165: # URI is an uploaded document for this course, default permissions don't matter
1.611 albertel 3166: # not allowing 'edit' access (editupload) to uploaded course docs
1.492 albertel 3167: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
1.665 albertel 3168: $thisallowed='';
1.671 raeburn 3169: my ($match)=&is_on_map($uri);
3170: if ($match) {
3171: if ($env{'user.priv.'.$env{'request.role'}.'./'}
3172: =~/\Q$priv\E\&([^\:]*)/) {
3173: $thisallowed.=$1;
3174: }
3175: } else {
3176: my $refuri=$env{'httpref.'.$orguri};
3177: if ($refuri) {
3178: if ($refuri =~ m|^/adm/|) {
1.669 raeburn 3179: $thisallowed='F';
1.671 raeburn 3180: } else {
3181: $refuri=&declutter($refuri);
3182: my ($match) = &is_on_map($refuri);
3183: if ($match) {
3184: $thisallowed='F';
3185: }
1.669 raeburn 3186: }
1.671 raeburn 3187: }
3188: }
1.314 www 3189: }
1.492 albertel 3190:
1.52 www 3191: # Full access at system, domain or course-wide level? Exit.
1.29 www 3192:
3193: if ($thisallowed=~/F/) {
3194: return 'F';
3195: }
3196:
1.52 www 3197: # If this is generating or modifying users, exit with special codes
1.29 www 3198:
1.643 www 3199: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
3200: if (($priv eq 'cca') || ($priv eq 'caa')) {
1.642 albertel 3201: my ($audom,$auname)=split('/',$uri);
1.643 www 3202: # no author name given, so this just checks on the general right to make a co-author in this domain
3203: unless ($auname) { return $thisallowed; }
3204: # an author name is given, so we are about to actually make a co-author for a certain account
1.642 albertel 3205: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
3206: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
3207: ($audom ne $env{'request.role.domain'}))) { return ''; }
3208: }
1.52 www 3209: return $thisallowed;
3210: }
3211: #
1.103 harris41 3212: # Gathered so far: system, domain and course wide privileges
1.52 www 3213: #
3214: # Course: See if uri or referer is an individual resource that is part of
3215: # the course
3216:
1.620 albertel 3217: if ($env{'request.course.id'}) {
1.232 www 3218:
1.620 albertel 3219: $courseprivid=$env{'request.course.id'};
3220: if ($env{'request.course.sec'}) {
3221: $courseprivid.='/'.$env{'request.course.sec'};
1.52 www 3222: }
3223: $courseprivid=~s/\_/\//;
3224: my $checkreferer=1;
1.232 www 3225: my ($match,$cond)=&is_on_map($uri);
3226: if ($match) {
3227: $statecond=$cond;
1.620 albertel 3228: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
1.479 albertel 3229: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 3230: $thisallowed.=$1;
3231: $checkreferer=0;
3232: }
1.29 www 3233: }
1.83 www 3234:
1.148 www 3235: if ($checkreferer) {
1.620 albertel 3236: my $refuri=$env{'httpref.'.$orguri};
1.148 www 3237: unless ($refuri) {
1.620 albertel 3238: foreach (keys %env) {
1.148 www 3239: if ($_=~/^httpref\..*\*/) {
3240: my $pattern=$_;
1.156 www 3241: $pattern=~s/^httpref\.\/res\///;
1.148 www 3242: $pattern=~s/\*/\[\^\/\]\+/g;
3243: $pattern=~s/\//\\\//g;
1.152 www 3244: if ($orguri=~/$pattern/) {
1.620 albertel 3245: $refuri=$env{$_};
1.148 www 3246: }
3247: }
1.191 harris41 3248: }
1.148 www 3249: }
1.232 www 3250:
1.148 www 3251: if ($refuri) {
1.152 www 3252: $refuri=&declutter($refuri);
1.232 www 3253: my ($match,$cond)=&is_on_map($refuri);
3254: if ($match) {
3255: my $refstatecond=$cond;
1.620 albertel 3256: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
1.479 albertel 3257: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 3258: $thisallowed.=$1;
1.53 www 3259: $uri=$refuri;
3260: $statecond=$refstatecond;
1.52 www 3261: }
3262: }
1.148 www 3263: }
1.29 www 3264: }
1.52 www 3265: }
1.29 www 3266:
1.52 www 3267: #
1.103 harris41 3268: # Gathered now: all privileges that could apply, and condition number
1.52 www 3269: #
3270: #
3271: # Full or no access?
3272: #
1.29 www 3273:
1.52 www 3274: if ($thisallowed=~/F/) {
3275: return 'F';
3276: }
1.29 www 3277:
1.52 www 3278: unless ($thisallowed) {
3279: return '';
3280: }
1.29 www 3281:
1.52 www 3282: # Restrictions exist, deal with them
3283: #
3284: # C:according to course preferences
3285: # R:according to resource settings
3286: # L:unless locked
3287: # X:according to user session state
3288: #
3289:
3290: # Possibly locked functionality, check all courses
1.54 www 3291: # Locks might take effect only after 10 minutes cache expiration for other
3292: # courses, and 2 minutes for current course
1.52 www 3293:
3294: my $envkey;
3295: if ($thisallowed=~/L/) {
1.620 albertel 3296: foreach $envkey (keys %env) {
1.54 www 3297: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
3298: my $courseid=$2;
3299: my $roleid=$1.'.'.$2;
1.92 www 3300: $courseid=~s/^\///;
1.54 www 3301: my $expiretime=600;
1.620 albertel 3302: if ($env{'request.role'} eq $roleid) {
1.54 www 3303: $expiretime=120;
3304: }
3305: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
3306: my $prefix='course.'.$cdom.'_'.$cnum.'.';
1.620 albertel 3307: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
1.54 www 3308: &coursedescription($courseid);
3309: }
1.620 albertel 3310: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
3311: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
3312: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
3313: &log($env{'user.domain'},$env{'user.name'},
3314: $env{'user.home'},
1.57 www 3315: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 3316: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.620 albertel 3317: $env{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 3318: return '';
3319: }
3320: }
1.620 albertel 3321: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
3322: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
3323: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
3324: &log($env{'user.domain'},$env{'user.name'},
3325: $env{'user.home'},
1.57 www 3326: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 3327: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.620 albertel 3328: $env{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 3329: return '';
3330: }
3331: }
3332: }
1.29 www 3333: }
1.52 www 3334: }
3335:
3336: #
3337: # Rest of the restrictions depend on selected course
3338: #
3339:
1.620 albertel 3340: unless ($env{'request.course.id'}) {
1.52 www 3341: return '1';
3342: }
1.29 www 3343:
1.52 www 3344: #
3345: # Now user is definitely in a course
3346: #
1.53 www 3347:
3348:
3349: # Course preferences
3350:
3351: if ($thisallowed=~/C/) {
1.620 albertel 3352: my $rolecode=(split(/\./,$env{'request.role'}))[0];
3353: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
3354: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
1.479 albertel 3355: =~/\Q$rolecode\E/) {
1.689 albertel 3356: if ($priv ne 'pch') {
3357: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
3358: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
3359: $env{'request.course.id'});
3360: }
1.237 www 3361: return '';
3362: }
3363:
1.620 albertel 3364: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
1.479 albertel 3365: =~/\Q$unamedom\E/) {
1.689 albertel 3366: if ($priv ne 'pch') {
3367: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
3368: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
3369: $env{'request.course.id'});
3370: }
1.54 www 3371: return '';
3372: }
1.53 www 3373: }
3374:
3375: # Resource preferences
3376:
3377: if ($thisallowed=~/R/) {
1.620 albertel 3378: my $rolecode=(split(/\./,$env{'request.role'}))[0];
1.479 albertel 3379: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
1.689 albertel 3380: if ($priv ne 'pch') {
3381: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
3382: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
3383: }
3384: return '';
1.54 www 3385: }
1.53 www 3386: }
1.30 www 3387:
1.246 www 3388: # Restricted by state or randomout?
1.30 www 3389:
1.52 www 3390: if ($thisallowed=~/X/) {
1.620 albertel 3391: if ($env{'acc.randomout'}) {
1.579 albertel 3392: if (!$symb) { $symb=&symbread($uri,1); }
1.620 albertel 3393: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
1.248 www 3394: return '';
3395: }
1.247 www 3396: }
3397: if (&condval($statecond)) {
1.52 www 3398: return '2';
3399: } else {
3400: return '';
3401: }
3402: }
1.30 www 3403:
1.52 www 3404: return 'F';
1.232 www 3405: }
3406:
3407: # --------------------------------------------------- Is a resource on the map?
3408:
3409: sub is_on_map {
1.659 albertel 3410: my $uri=&deversion(&declutter(shift));
1.232 www 3411: my @uriparts=split(/\//,$uri);
3412: my $filename=$uriparts[$#uriparts];
3413: my $pathname=$uri;
1.289 bowersj2 3414: $pathname=~s|/\Q$filename\E$||;
1.332 www 3415: $pathname=~s/^adm\/wrapper\///;
1.289 bowersj2 3416: #Trying to find the conditional for the file
1.620 albertel 3417: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
1.289 bowersj2 3418: /\&\Q$filename\E\:([\d\|]+)\&/);
1.232 www 3419: if ($match) {
1.289 bowersj2 3420: return (1,$1);
3421: } else {
1.434 www 3422: return (0,0);
1.289 bowersj2 3423: }
1.12 www 3424: }
3425:
1.427 www 3426: # --------------------------------------------------------- Get symb from alias
3427:
3428: sub get_symb_from_alias {
3429: my $symb=shift;
3430: my ($map,$resid,$url)=&decode_symb($symb);
3431: # Already is a symb
3432: if ($url) { return $symb; }
3433: # Must be an alias
3434: my $aliassymb='';
3435: my %bighash;
1.620 albertel 3436: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
1.427 www 3437: &GDBM_READER(),0640)) {
3438: my $rid=$bighash{'mapalias_'.$symb};
3439: if ($rid) {
3440: my ($mapid,$resid)=split(/\./,$rid);
1.429 albertel 3441: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
3442: $resid,$bighash{'src_'.$rid});
1.427 www 3443: }
3444: untie %bighash;
3445: }
3446: return $aliassymb;
3447: }
3448:
1.12 www 3449: # ----------------------------------------------------------------- Define Role
3450:
3451: sub definerole {
3452: if (allowed('mcr','/')) {
3453: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.392 www 3454: foreach (split(':',$sysrole)) {
1.21 www 3455: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3456: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
3457: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
3458: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3459: return "refused:s:$crole&$cqual";
3460: }
3461: }
1.191 harris41 3462: }
1.392 www 3463: foreach (split(':',$domrole)) {
1.21 www 3464: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3465: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
3466: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
3467: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
1.21 www 3468: return "refused:d:$crole&$cqual";
3469: }
3470: }
1.191 harris41 3471: }
1.392 www 3472: foreach (split(':',$courole)) {
1.21 www 3473: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3474: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
3475: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
3476: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3477: return "refused:c:$crole&$cqual";
3478: }
3479: }
1.191 harris41 3480: }
1.620 albertel 3481: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
3482: "$env{'user.domain'}:$env{'user.name'}:".
1.21 www 3483: "rolesdef_$rolename=".
3484: escape($sysrole.'_'.$domrole.'_'.$courole);
1.620 albertel 3485: return reply($command,$env{'user.home'});
1.12 www 3486: } else {
3487: return 'refused';
3488: }
1.105 harris41 3489: }
3490:
3491: # ---------------- Make a metadata query against the network of library servers
3492:
3493: sub metadata_query {
1.244 matthew 3494: my ($query,$custom,$customshow,$server_array)=@_;
1.120 harris41 3495: my %rhash;
1.244 matthew 3496: my @server_list = (defined($server_array) ? @$server_array
3497: : keys(%libserv) );
3498: for my $server (@server_list) {
1.118 harris41 3499: unless ($custom or $customshow) {
3500: my $reply=&reply("querysend:".&escape($query),$server);
3501: $rhash{$server}=$reply;
3502: }
3503: else {
3504: my $reply=&reply("querysend:".&escape($query).':'.
3505: &escape($custom).':'.&escape($customshow),
3506: $server);
3507: $rhash{$server}=$reply;
3508: }
1.112 harris41 3509: }
1.118 harris41 3510: return \%rhash;
1.240 www 3511: }
3512:
3513: # ----------------------------------------- Send log queries and wait for reply
3514:
3515: sub log_query {
3516: my ($uname,$udom,$query,%filters)=@_;
3517: my $uhome=&homeserver($uname,$udom);
3518: if ($uhome eq 'no_host') { return 'error: no_host'; }
3519: my $uhost=$hostname{$uhome};
1.241 www 3520: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys %filters));
1.240 www 3521: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
3522: $uhome);
1.479 albertel 3523: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
1.242 www 3524: return get_query_reply($queryid);
3525: }
3526:
1.508 raeburn 3527: # ------- Request retrieval of institutional classlists for course(s)
1.506 raeburn 3528:
3529: sub fetch_enrollment_query {
1.511 raeburn 3530: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
1.508 raeburn 3531: my $homeserver;
1.547 raeburn 3532: my $maxtries = 1;
1.508 raeburn 3533: if ($context eq 'automated') {
3534: $homeserver = $perlvar{'lonHostID'};
1.547 raeburn 3535: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
1.508 raeburn 3536: } else {
3537: $homeserver = &homeserver($cnum,$dom);
3538: }
1.506 raeburn 3539: my $host=$hostname{$homeserver};
3540: my $cmd = '';
3541: foreach (keys %{$affiliatesref}) {
1.508 raeburn 3542: $cmd .= $_.'='.join(",",@{$$affiliatesref{$_}}).'%%';
1.506 raeburn 3543: }
3544: $cmd =~ s/%%$//;
3545: $cmd = &escape($cmd);
3546: my $query = 'fetchenrollment';
1.620 albertel 3547: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
1.526 raeburn 3548: unless ($queryid=~/^\Q$host\E\_/) {
3549: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
3550: return 'error: '.$queryid;
3551: }
1.506 raeburn 3552: my $reply = &get_query_reply($queryid);
1.547 raeburn 3553: my $tries = 1;
3554: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
3555: $reply = &get_query_reply($queryid);
3556: $tries ++;
3557: }
1.526 raeburn 3558: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1.620 albertel 3559: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
1.526 raeburn 3560: } else {
1.515 raeburn 3561: my @responses = split/:/,$reply;
3562: if ($homeserver eq $perlvar{'lonHostID'}) {
3563: foreach (@responses) {
3564: my ($key,$value) = split/=/,$_;
3565: $$replyref{$key} = $value;
3566: }
3567: } else {
1.506 raeburn 3568: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
3569: foreach (@responses) {
3570: my ($key,$value) = split/=/,$_;
3571: $$replyref{$key} = $value;
3572: if ($value > 0) {
3573: foreach (@{$$affiliatesref{$key}}) {
3574: my $filename = $dom.'_'.$key.'_'.$_.'_classlist.xml';
3575: my $destname = $pathname.'/'.$filename;
3576: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
1.526 raeburn 3577: if ($xml_classlist =~ /^error/) {
3578: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
3579: } else {
1.506 raeburn 3580: if ( open(FILE,">$destname") ) {
3581: print FILE &unescape($xml_classlist);
3582: close(FILE);
1.526 raeburn 3583: } else {
3584: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
1.506 raeburn 3585: }
3586: }
3587: }
3588: }
3589: }
3590: }
3591: return 'ok';
3592: }
3593: return 'error';
3594: }
3595:
1.242 www 3596: sub get_query_reply {
3597: my $queryid=shift;
1.240 www 3598: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
3599: my $reply='';
3600: for (1..100) {
3601: sleep 2;
3602: if (-e $replyfile.'.end') {
1.448 albertel 3603: if (open(my $fh,$replyfile)) {
1.240 www 3604: $reply.=<$fh>;
1.448 albertel 3605: close($fh);
1.240 www 3606: } else { return 'error: reply_file_error'; }
1.242 www 3607: return &unescape($reply);
3608: }
1.240 www 3609: }
1.242 www 3610: return 'timeout:'.$queryid;
1.240 www 3611: }
3612:
3613: sub courselog_query {
1.241 www 3614: #
3615: # possible filters:
3616: # url: url or symb
3617: # username
3618: # domain
3619: # action: view, submit, grade
3620: # start: timestamp
3621: # end: timestamp
3622: #
1.240 www 3623: my (%filters)=@_;
1.620 albertel 3624: unless ($env{'request.course.id'}) { return 'no_course'; }
1.241 www 3625: if ($filters{'url'}) {
3626: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
3627: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
3628: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
3629: }
1.620 albertel 3630: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
3631: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.240 www 3632: return &log_query($cname,$cdom,'courselog',%filters);
3633: }
3634:
3635: sub userlog_query {
3636: my ($uname,$udom,%filters)=@_;
3637: return &log_query($uname,$udom,'userlog',%filters);
1.12 www 3638: }
3639:
1.506 raeburn 3640: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
3641:
3642: sub auto_run {
1.508 raeburn 3643: my ($cnum,$cdom) = @_;
3644: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3645: my $response = &reply('autorun:'.$cdom,$homeserver);
1.506 raeburn 3646: return $response;
3647: }
3648:
3649: sub auto_get_sections {
1.508 raeburn 3650: my ($cnum,$cdom,$inst_coursecode) = @_;
3651: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3652: my @secs = ();
1.511 raeburn 3653: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
1.506 raeburn 3654: unless ($response eq 'refused') {
3655: @secs = split/:/,$response;
3656: }
3657: return @secs;
3658: }
3659:
3660: sub auto_new_course {
1.508 raeburn 3661: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
3662: my $homeserver = &homeserver($cnum,$cdom);
1.515 raeburn 3663: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
1.506 raeburn 3664: return $response;
3665: }
3666:
3667: sub auto_validate_courseID {
1.508 raeburn 3668: my ($cnum,$cdom,$inst_course_id) = @_;
3669: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3670: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
1.506 raeburn 3671: return $response;
3672: }
3673:
3674: sub auto_create_password {
1.508 raeburn 3675: my ($cnum,$cdom,$authparam) = @_;
3676: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3677: my $create_passwd = 0;
3678: my $authchk = '';
1.511 raeburn 3679: my $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
1.506 raeburn 3680: if ($response eq 'refused') {
3681: $authchk = 'refused';
3682: } else {
3683: ($authparam,$create_passwd,$authchk) = split/:/,$response;
3684: }
3685: return ($authparam,$create_passwd,$authchk);
3686: }
3687:
1.521 raeburn 3688: sub auto_instcode_format {
3689: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
3690: my $courses = '';
3691: my $homeserver;
3692: if ($caller eq 'global') {
1.584 raeburn 3693: foreach my $tryserver (keys %libserv) {
3694: if ($hostdom{$tryserver} eq $codedom) {
3695: $homeserver = $tryserver;
3696: last;
3697: }
3698: }
1.620 albertel 3699: if (($env{'user.name'}) && ($env{'user.domain'} eq $codedom)) {
3700: $homeserver = &homeserver($env{'user.name'},$codedom);
1.584 raeburn 3701: }
1.521 raeburn 3702: } else {
3703: $homeserver = &homeserver($caller,$codedom);
3704: }
3705: foreach (keys %{$instcodes}) {
3706: $courses .= &escape($_).'='.&escape($$instcodes{$_}).'&';
3707: }
3708: chop($courses);
3709: my $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$homeserver);
3710: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
3711: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) = split/:/,$response;
3712: %{$codes} = &str2hash($codes_str);
3713: @{$codetitles} = &str2array($codetitles_str);
3714: %{$cat_titles} = &str2hash($cat_titles_str);
3715: %{$cat_order} = &str2hash($cat_order_str);
3716: return 'ok';
3717: }
3718: return $response;
3719: }
3720:
1.679 raeburn 3721: # ------------------------------------------------------- Course Group routines
3722:
3723: sub get_coursegroups {
1.683 raeburn 3724: my ($cdom,$cnum,$group) = @_;
3725: return(&dump('coursegroups',$cdom,$cnum,$group));
1.679 raeburn 3726: }
3727:
3728: sub modify_coursegroup {
3729: my ($cdom,$cnum,$groupsettings) = @_;
3730: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
3731: }
3732:
3733: sub modify_group_roles {
3734: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;
3735: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
3736: my $role = 'gr/'.&escape($userprivs);
3737: my ($uname,$udom) = split(/:/,$user);
3738: my $result = &assignrole($udom,$uname,$url,$role,$end,$start);
1.684 raeburn 3739: if ($result eq 'ok') {
3740: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
3741: }
3742:
1.679 raeburn 3743: return $result;
3744: }
3745:
3746: sub modify_coursegroup_membership {
3747: my ($cdom,$cnum,$membership) = @_;
3748: my $result = &put('groupmembership',$membership,$cdom,$cnum);
3749: return $result;
3750: }
3751:
1.682 raeburn 3752: sub get_active_groups {
3753: my ($udom,$uname,$cdom,$cnum) = @_;
3754: my $now = time;
3755: my %groups = ();
3756: foreach my $key (keys(%env)) {
3757: if ($key =~ m-user\.role\.gr\./([^/]+)/([^/]+)/(\w+)$-) {
3758: my ($start,$end) = split(/\./,$env{$key});
3759: if (($end!=0) && ($end<$now)) { next; }
3760: if (($start!=0) && ($start>$now)) { next; }
3761: if ($1 eq $cdom && $2 eq $cnum) {
3762: $groups{$3} = $env{$key} ;
3763: }
3764: }
3765: }
3766: return %groups;
3767: }
3768:
1.683 raeburn 3769: sub get_group_membership {
3770: my ($cdom,$cnum,$group) = @_;
3771: return(&dump('groupmembership',$cdom,$cnum,$group));
3772: }
3773:
3774: sub get_users_groups {
3775: my ($udom,$uname,$courseid) = @_;
3776: my $cachetime=1800;
3777: $courseid=~s/\_/\//g;
3778: $courseid=~s/^(\w)/\/$1/;
3779:
3780: my $hashid="$udom:$uname:$courseid";
3781: my ($result,$cached)=&is_cached_new('getgroups',$hashid);
3782: if (defined($cached)) { return $result; }
3783:
3784: my %roleshash = &dump('roles',$udom,$uname,$courseid);
3785: my ($tmp) = keys(%roleshash);
3786: if ($tmp=~/^error:/) {
3787: &logthis('Error retrieving roles: '.$tmp.' for '.$uname.':'.$udom);
3788: return '';
3789: } else {
3790: my $grouplist;
3791: foreach my $key (keys %roleshash) {
3792: if ($key =~ /^\Q$courseid\E\/(\w+)\_gr$/) {
3793: unless ($roleshash{$key} =~ /_1_1$/) { # deleted membership
3794: $grouplist .= $1.':';
3795: }
3796: }
3797: }
3798: $grouplist =~ s/:$//;
3799: return &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
3800: }
3801: }
3802:
3803: sub devalidate_getgroups_cache {
3804: my ($udom,$uname,$cdom,$cnum)=@_;
3805: my $courseid = $cdom.'_'.$cnum;
3806: $courseid=~s/\_/\//g;
3807: $courseid=~s/^(\w)/\/$1/;
3808: my $hashid="$udom:$uname:$courseid";
3809: &devalidate_cache_new('getgroups',$hashid);
3810: }
3811:
1.12 www 3812: # ------------------------------------------------------------------ Plain Text
3813:
3814: sub plaintext {
1.22 www 3815: my $short=shift;
1.676 albertel 3816: return &Apache::lonlocal::mt($prp{$short});
1.12 www 3817: }
3818:
3819: # ----------------------------------------------------------------- Assign Role
3820:
3821: sub assignrole {
1.357 www 3822: my ($udom,$uname,$url,$role,$end,$start,$deleteflag)=@_;
1.21 www 3823: my $mrole;
3824: if ($role =~ /^cr\//) {
1.393 www 3825: my $cwosec=$url;
3826: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
3827: unless (&allowed('ccr',$cwosec)) {
1.104 www 3828: &logthis('Refused custom assignrole: '.
3829: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1.620 albertel 3830: $env{'user.name'}.' at '.$env{'user.domain'});
1.104 www 3831: return 'refused';
3832: }
1.21 www 3833: $mrole='cr';
1.678 raeburn 3834: } elsif ($role =~ /^gr\//) {
3835: my $cwogrp=$url;
3836: $cwogrp=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
3837: unless (&allowed('mdg',$cwogrp)) {
3838: &logthis('Refused group assignrole: '.
3839: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
3840: $env{'user.name'}.' at '.$env{'user.domain'});
3841: return 'refused';
3842: }
3843: $mrole='gr';
1.21 www 3844: } else {
1.82 www 3845: my $cwosec=$url;
1.83 www 3846: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.373 www 3847: unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) {
1.104 www 3848: &logthis('Refused assignrole: '.
3849: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1.620 albertel 3850: $env{'user.name'}.' at '.$env{'user.domain'});
1.104 www 3851: return 'refused';
3852: }
1.21 www 3853: $mrole=$role;
3854: }
1.620 albertel 3855: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
1.21 www 3856: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 3857: if ($end) { $command.='_'.$end; }
1.21 www 3858: if ($start) {
3859: if ($end) {
1.81 www 3860: $command.='_'.$start;
1.21 www 3861: } else {
1.81 www 3862: $command.='_0_'.$start;
1.21 www 3863: }
3864: }
1.357 www 3865: # actually delete
3866: if ($deleteflag) {
1.373 www 3867: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
1.357 www 3868: # modify command to delete the role
1.620 albertel 3869: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
1.357 www 3870: "$udom:$uname:$url".'_'."$mrole";
1.620 albertel 3871: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
1.357 www 3872: # set start and finish to negative values for userrolelog
3873: $start=-1;
3874: $end=-1;
3875: }
3876: }
3877: # send command
1.349 www 3878: my $answer=&reply($command,&homeserver($uname,$udom));
1.357 www 3879: # log new user role if status is ok
1.349 www 3880: if ($answer eq 'ok') {
1.663 raeburn 3881: &userrolelog($role,$uname,$udom,$url,$start,$end);
1.349 www 3882: }
3883: return $answer;
1.169 harris41 3884: }
3885:
3886: # -------------------------------------------------- Modify user authentication
1.197 www 3887: # Overrides without validation
3888:
1.169 harris41 3889: sub modifyuserauth {
3890: my ($udom,$uname,$umode,$upass)=@_;
3891: my $uhome=&homeserver($uname,$udom);
1.197 www 3892: unless (&allowed('mau',$udom)) { return 'refused'; }
3893: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
1.620 albertel 3894: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
3895: ' in domain '.$env{'request.role.domain'});
1.169 harris41 3896: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
3897: &escape($upass),$uhome);
1.620 albertel 3898: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1.197 www 3899: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
3900: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
3901: &log($udom,,$uname,$uhome,
1.620 albertel 3902: 'Authentication changed by '.$env{'user.domain'}.', '.
3903: $env{'user.name'}.', '.$umode.
1.197 www 3904: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
1.169 harris41 3905: unless ($reply eq 'ok') {
1.197 www 3906: &logthis('Authentication mode error: '.$reply);
1.169 harris41 3907: return 'error: '.$reply;
3908: }
1.170 harris41 3909: return 'ok';
1.80 www 3910: }
3911:
1.81 www 3912: # --------------------------------------------------------------- Modify a user
1.80 www 3913:
1.81 www 3914: sub modifyuser {
1.206 matthew 3915: my ($udom, $uname, $uid,
3916: $umode, $upass, $first,
3917: $middle, $last, $gene,
1.387 www 3918: $forceid, $desiredhome, $email)=@_;
1.198 www 3919: $udom=~s/\W//g;
3920: $uname=~s/\W//g;
1.81 www 3921: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3922: $umode.', '.$first.', '.$middle.', '.
1.206 matthew 3923: $last.', '.$gene.'(forceid: '.$forceid.')'.
3924: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
3925: ' desiredhome not specified').
1.620 albertel 3926: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
3927: ' in domain '.$env{'request.role.domain'});
1.230 stredwic 3928: my $uhome=&homeserver($uname,$udom,'true');
1.80 www 3929: # ----------------------------------------------------------------- Create User
1.406 albertel 3930: if (($uhome eq 'no_host') &&
3931: (($umode && $upass) || ($umode eq 'localauth'))) {
1.80 www 3932: my $unhome='';
1.209 matthew 3933: if (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) {
3934: $unhome = $desiredhome;
1.620 albertel 3935: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
3936: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
1.209 matthew 3937: } else { # load balancing routine for determining $unhome
1.80 www 3938: my $tryserver;
1.81 www 3939: my $loadm=10000000;
1.80 www 3940: foreach $tryserver (keys %libserv) {
3941: if ($hostdom{$tryserver} eq $udom) {
3942: my $answer=reply('load',$tryserver);
3943: if (($answer=~/\d+/) && ($answer<$loadm)) {
3944: $loadm=$answer;
3945: $unhome=$tryserver;
3946: }
3947: }
3948: }
3949: }
3950: if (($unhome eq '') || ($unhome eq 'no_host')) {
1.206 matthew 3951: return 'error: unable to find a home server for '.$uname.
3952: ' in domain '.$udom;
1.80 www 3953: }
3954: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
3955: &escape($upass),$unhome);
3956: unless ($reply eq 'ok') {
3957: return 'error: '.$reply;
3958: }
1.230 stredwic 3959: $uhome=&homeserver($uname,$udom,'true');
1.80 www 3960: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1.386 matthew 3961: return 'error: unable verify users home machine.';
1.80 www 3962: }
1.209 matthew 3963: } # End of creation of new user
1.80 www 3964: # ---------------------------------------------------------------------- Add ID
3965: if ($uid) {
3966: $uid=~tr/A-Z/a-z/;
3967: my %uidhash=&idrget($udom,$uname);
1.196 www 3968: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
3969: && (!$forceid)) {
1.80 www 3970: unless ($uid eq $uidhash{$uname}) {
1.386 matthew 3971: return 'error: user id "'.$uid.'" does not match '.
3972: 'current user id "'.$uidhash{$uname}.'".';
1.80 www 3973: }
3974: } else {
3975: &idput($udom,($uname => $uid));
3976: }
3977: }
3978: # -------------------------------------------------------------- Add names, etc
1.313 matthew 3979: my @tmp=&get('environment',
1.134 albertel 3980: ['firstname','middlename','lastname','generation'],
3981: $udom,$uname);
1.313 matthew 3982: my %names;
3983: if ($tmp[0] =~ m/^error:.*/) {
3984: %names=();
3985: } else {
3986: %names = @tmp;
3987: }
1.388 www 3988: #
3989: # Make sure to not trash student environment if instructor does not bother
3990: # to supply name and email information
3991: #
3992: if ($first) { $names{'firstname'} = $first; }
1.385 matthew 3993: if (defined($middle)) { $names{'middlename'} = $middle; }
1.388 www 3994: if ($last) { $names{'lastname'} = $last; }
1.385 matthew 3995: if (defined($gene)) { $names{'generation'} = $gene; }
1.592 www 3996: if ($email) {
3997: $email=~s/[^\w\@\.\-\,]//gs;
3998: if ($email=~/\@/) { $names{'notification'} = $email;
3999: $names{'critnotification'} = $email;
4000: $names{'permanentemail'} = $email; }
4001: }
1.134 albertel 4002: my $reply = &put('environment', \%names, $udom,$uname);
4003: if ($reply ne 'ok') { return 'error: '.$reply; }
1.680 www 4004: &devalidate_cache_new('namescache',$uname.':'.$udom);
1.81 www 4005: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 4006: $umode.', '.$first.', '.$middle.', '.
4007: $last.', '.$gene.' by '.
1.620 albertel 4008: $env{'user.name'}.' at '.$env{'user.domain'});
1.134 albertel 4009: return 'ok';
1.80 www 4010: }
4011:
1.81 www 4012: # -------------------------------------------------------------- Modify student
1.80 www 4013:
1.81 www 4014: sub modifystudent {
4015: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1.515 raeburn 4016: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
1.455 albertel 4017: if (!$cid) {
1.620 albertel 4018: unless ($cid=$env{'request.course.id'}) {
1.455 albertel 4019: return 'not_in_class';
4020: }
1.80 www 4021: }
4022: # --------------------------------------------------------------- Make the user
1.81 www 4023: my $reply=&modifyuser
1.209 matthew 4024: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
1.387 www 4025: $desiredhome,$email);
1.80 www 4026: unless ($reply eq 'ok') { return $reply; }
1.297 matthew 4027: # This will cause &modify_student_enrollment to get the uid from the
4028: # students environment
4029: $uid = undef if (!$forceid);
1.455 albertel 4030: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
1.515 raeburn 4031: $gene,$usec,$end,$start,$type,$locktype,$cid);
1.297 matthew 4032: return $reply;
4033: }
4034:
4035: sub modify_student_enrollment {
1.515 raeburn 4036: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid) = @_;
1.455 albertel 4037: my ($cdom,$cnum,$chome);
4038: if (!$cid) {
1.620 albertel 4039: unless ($cid=$env{'request.course.id'}) {
1.455 albertel 4040: return 'not_in_class';
4041: }
1.620 albertel 4042: $cdom=$env{'course.'.$cid.'.domain'};
4043: $cnum=$env{'course.'.$cid.'.num'};
1.455 albertel 4044: } else {
4045: ($cdom,$cnum)=split(/_/,$cid);
4046: }
1.620 albertel 4047: $chome=$env{'course.'.$cid.'.home'};
1.455 albertel 4048: if (!$chome) {
1.457 raeburn 4049: $chome=&homeserver($cnum,$cdom);
1.297 matthew 4050: }
1.455 albertel 4051: if (!$chome) { return 'unknown_course'; }
1.297 matthew 4052: # Make sure the user exists
1.81 www 4053: my $uhome=&homeserver($uname,$udom);
4054: if (($uhome eq '') || ($uhome eq 'no_host')) {
4055: return 'error: no such user';
4056: }
1.297 matthew 4057: # Get student data if we were not given enough information
4058: if (!defined($first) || $first eq '' ||
4059: !defined($last) || $last eq '' ||
4060: !defined($uid) || $uid eq '' ||
4061: !defined($middle) || $middle eq '' ||
4062: !defined($gene) || $gene eq '') {
1.294 matthew 4063: # They did not supply us with enough data to enroll the student, so
4064: # we need to pick up more information.
1.297 matthew 4065: my %tmp = &get('environment',
1.294 matthew 4066: ['firstname','middlename','lastname', 'generation','id']
1.297 matthew 4067: ,$udom,$uname);
4068:
1.455 albertel 4069: #foreach (keys(%tmp)) {
4070: # &logthis("key $_ = ".$tmp{$_});
4071: #}
1.294 matthew 4072: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
4073: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
4074: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
1.297 matthew 4075: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
1.294 matthew 4076: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
4077: }
1.556 albertel 4078: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
1.487 albertel 4079: my $reply=cput('classlist',
4080: {"$uname:$udom" =>
1.515 raeburn 4081: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
1.487 albertel 4082: $cdom,$cnum);
1.81 www 4083: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
4084: return 'error: '.$reply;
1.652 albertel 4085: } else {
4086: &devalidate_getsection_cache($udom,$uname,$cid);
1.81 www 4087: }
1.297 matthew 4088: # Add student role to user
1.83 www 4089: my $uurl='/'.$cid;
1.81 www 4090: $uurl=~s/\_/\//g;
4091: if ($usec) {
4092: $uurl.='/'.$usec;
4093: }
4094: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 4095: }
4096:
1.556 albertel 4097: sub format_name {
4098: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
4099: my $name;
4100: if ($first ne 'lastname') {
4101: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
4102: } else {
4103: if ($lastname=~/\S/) {
4104: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
4105: $name=~s/\s+,/,/;
4106: } else {
4107: $name.= $firstname.' '.$middlename.' '.$generation;
4108: }
4109: }
4110: $name=~s/^\s+//;
4111: $name=~s/\s+$//;
4112: $name=~s/\s+/ /g;
4113: return $name;
4114: }
4115:
1.84 www 4116: # ------------------------------------------------- Write to course preferences
4117:
4118: sub writecoursepref {
4119: my ($courseid,%prefs)=@_;
4120: $courseid=~s/^\///;
4121: $courseid=~s/\_/\//g;
4122: my ($cdomain,$cnum)=split(/\//,$courseid);
4123: my $chome=homeserver($cnum,$cdomain);
4124: if (($chome eq '') || ($chome eq 'no_host')) {
4125: return 'error: no such course';
4126: }
4127: my $cstring='';
1.191 harris41 4128: foreach (keys %prefs) {
1.84 www 4129: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1.191 harris41 4130: }
1.84 www 4131: $cstring=~s/\&$//;
4132: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
4133: }
4134:
4135: # ---------------------------------------------------------- Make/modify course
4136:
4137: sub createcourse {
1.571 raeburn 4138: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner)=@_;
1.84 www 4139: $url=&declutter($url);
4140: my $cid='';
1.264 matthew 4141: unless (&allowed('ccc',$udom)) {
1.84 www 4142: return 'refused';
4143: }
4144: # ------------------------------------------------------------------- Create ID
1.674 www 4145: my $uname=int(1+rand(9)).
4146: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
4147: substr($$.time,0,5).unpack("H8",pack("I32",time)).
1.84 www 4148: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
4149: # ----------------------------------------------- Make sure that does not exist
1.230 stredwic 4150: my $uhome=&homeserver($uname,$udom,'true');
1.84 www 4151: unless (($uhome eq '') || ($uhome eq 'no_host')) {
4152: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
4153: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1.230 stredwic 4154: $uhome=&homeserver($uname,$udom,'true');
1.84 www 4155: unless (($uhome eq '') || ($uhome eq 'no_host')) {
4156: return 'error: unable to generate unique course-ID';
4157: }
4158: }
1.264 matthew 4159: # ------------------------------------------------ Check supplied server name
1.620 albertel 4160: $course_server = $env{'user.homeserver'} if (! defined($course_server));
1.264 matthew 4161: if (! exists($libserv{$course_server})) {
4162: return 'error:bad server name '.$course_server;
4163: }
1.84 www 4164: # ------------------------------------------------------------- Make the course
4165: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1.264 matthew 4166: $course_server);
1.84 www 4167: unless ($reply eq 'ok') { return 'error: '.$reply; }
1.230 stredwic 4168: $uhome=&homeserver($uname,$udom,'true');
1.84 www 4169: if (($uhome eq '') || ($uhome eq 'no_host')) {
4170: return 'error: no such course';
4171: }
1.271 www 4172: # ----------------------------------------------------------------- Course made
1.516 raeburn 4173: # log existence
4174: &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
1.571 raeburn 4175: ':'.&escape($inst_code).':'.&escape($course_owner),$uhome);
1.358 www 4176: &flushcourselogs();
4177: # set toplevel url
1.271 www 4178: my $topurl=$url;
4179: unless ($nonstandard) {
4180: # ------------------------------------------ For standard courses, make top url
4181: my $mapurl=&clutter($url);
1.278 www 4182: if ($mapurl eq '/res/') { $mapurl=''; }
1.620 albertel 4183: $env{'form.initmap'}=(<<ENDINITMAP);
1.271 www 4184: <map>
4185: <resource id="1" type="start"></resource>
4186: <resource id="2" src="$mapurl"></resource>
4187: <resource id="3" type="finish"></resource>
4188: <link index="1" from="1" to="2"></link>
4189: <link index="2" from="2" to="3"></link>
4190: </map>
4191: ENDINITMAP
4192: $topurl=&declutter(
1.638 albertel 4193: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
1.271 www 4194: );
4195: }
4196: # ----------------------------------------------------------- Write preferences
1.84 www 4197: &writecoursepref($udom.'_'.$uname,
4198: ('description' => $description,
1.271 www 4199: 'url' => $topurl));
1.84 www 4200: return '/'.$udom.'/'.$uname;
4201: }
4202:
1.21 www 4203: # ---------------------------------------------------------- Assign Custom Role
4204:
4205: sub assigncustomrole {
1.357 www 4206: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
1.21 www 4207: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1.357 www 4208: $end,$start,$deleteflag);
1.21 www 4209: }
4210:
4211: # ----------------------------------------------------------------- Revoke Role
4212:
4213: sub revokerole {
1.357 www 4214: my ($udom,$uname,$url,$role,$deleteflag)=@_;
1.21 www 4215: my $now=time;
1.357 www 4216: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
1.21 www 4217: }
4218:
4219: # ---------------------------------------------------------- Revoke Custom Role
4220:
4221: sub revokecustomrole {
1.357 www 4222: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
1.21 www 4223: my $now=time;
1.357 www 4224: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
4225: $deleteflag);
1.17 www 4226: }
4227:
1.533 banghart 4228: # ------------------------------------------------------------ Disk usage
1.535 albertel 4229: sub diskusage {
1.533 banghart 4230: my ($udom,$uname,$directoryRoot)=@_;
4231: $directoryRoot =~ s/\/$//;
1.535 albertel 4232: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
1.514 albertel 4233: return $listing;
1.512 banghart 4234: }
4235:
1.566 banghart 4236: sub is_locked {
4237: my ($file_name, $domain, $user) = @_;
4238: my @check;
4239: my $is_locked;
4240: push @check, $file_name;
1.613 albertel 4241: my %locked = &get('file_permissions',\@check,
1.620 albertel 4242: $env{'user.domain'},$env{'user.name'});
1.615 albertel 4243: my ($tmp)=keys(%locked);
4244: if ($tmp=~/^error:/) { undef(%locked); }
1.613 albertel 4245:
1.566 banghart 4246: if (ref($locked{$file_name}) eq 'ARRAY') {
4247: $is_locked = 'true';
4248: } else {
4249: $is_locked = 'false';
4250: }
4251: }
4252:
1.559 banghart 4253: # ------------------------------------------------------------- Mark as Read Only
4254:
4255: sub mark_as_readonly {
4256: my ($domain,$user,$files,$what) = @_;
1.613 albertel 4257: my %current_permissions = &dump('file_permissions',$domain,$user);
1.615 albertel 4258: my ($tmp)=keys(%current_permissions);
4259: if ($tmp=~/^error:/) { undef(%current_permissions); }
1.560 banghart 4260: foreach my $file (@{$files}) {
1.561 banghart 4261: push(@{$current_permissions{$file}},$what);
1.559 banghart 4262: }
1.613 albertel 4263: &put('file_permissions',\%current_permissions,$domain,$user);
1.559 banghart 4264: return;
4265: }
4266:
1.572 banghart 4267: # ------------------------------------------------------------Save Selected Files
4268:
4269: sub save_selected_files {
4270: my ($user, $path, @files) = @_;
4271: my $filename = $user."savedfiles";
1.573 banghart 4272: my @other_files = &files_not_in_path($user, $path);
1.574 banghart 4273: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
1.573 banghart 4274: foreach my $file (@files) {
1.620 albertel 4275: print (OUT $env{'form.currentpath'}.$file."\n");
1.573 banghart 4276: }
4277: foreach my $file (@other_files) {
1.574 banghart 4278: print (OUT $file."\n");
1.572 banghart 4279: }
1.574 banghart 4280: close (OUT);
1.572 banghart 4281: return 'ok';
4282: }
4283:
1.574 banghart 4284: sub clear_selected_files {
4285: my ($user) = @_;
4286: my $filename = $user."savedfiles";
4287: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
4288: print (OUT undef);
4289: close (OUT);
4290: return ("ok");
4291: }
4292:
1.572 banghart 4293: sub files_in_path {
4294: my ($user, $path) = @_;
4295: my $filename = $user."savedfiles";
4296: my %return_files;
1.574 banghart 4297: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
1.573 banghart 4298: while (my $line_in = <IN>) {
1.574 banghart 4299: chomp ($line_in);
4300: my @paths_and_file = split (m!/!, $line_in);
4301: my $file_part = pop (@paths_and_file);
4302: my $path_part = join ('/', @paths_and_file);
1.573 banghart 4303: $path_part.='/';
4304: my $path_and_file = $path_part.$file_part;
4305: if ($path_part eq $path) {
4306: $return_files{$file_part}= 'selected';
4307: }
4308: }
1.574 banghart 4309: close (IN);
4310: return (\%return_files);
1.572 banghart 4311: }
4312:
4313: # called in portfolio select mode, to show files selected NOT in current directory
4314: sub files_not_in_path {
4315: my ($user, $path) = @_;
4316: my $filename = $user."savedfiles";
4317: my @return_files;
4318: my $path_part;
1.574 banghart 4319: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
1.572 banghart 4320: while (<IN>) {
4321: #ok, I know it's clunky, but I want it to work
4322: my @paths_and_file = split m!/!, $_;
1.574 banghart 4323: my $file_part = pop (@paths_and_file);
4324: chomp ($file_part);
4325: my $path_part = join ('/', @paths_and_file);
1.572 banghart 4326: $path_part .= '/';
4327: my $path_and_file = $path_part.$file_part;
4328: if ($path_part ne $path) {
1.574 banghart 4329: push (@return_files, ($path_and_file));
1.572 banghart 4330: }
4331: }
1.574 banghart 4332: close (OUT);
4333: return (@return_files);
1.572 banghart 4334: }
4335:
1.561 banghart 4336: #--------------------------------------------------------------Get Marked as Read Only
4337:
1.629 banghart 4338:
1.561 banghart 4339: sub get_marked_as_readonly {
4340: my ($domain,$user,$what) = @_;
1.613 albertel 4341: my %current_permissions = &dump('file_permissions',$domain,$user);
1.615 albertel 4342: my ($tmp)=keys(%current_permissions);
4343: if ($tmp=~/^error:/) { undef(%current_permissions); }
1.563 banghart 4344: my @readonly_files;
1.629 banghart 4345: my $cmp1=$what;
4346: if (ref($what)) { $cmp1=join('',@{$what}) };
1.563 banghart 4347: while (my ($file_name,$value) = each(%current_permissions)) {
1.561 banghart 4348: if (ref($value) eq "ARRAY"){
4349: foreach my $stored_what (@{$value}) {
1.629 banghart 4350: my $cmp2=$stored_what;
4351: if (ref($stored_what)) { $cmp2=join('',@{$stored_what}) };
4352: if ($cmp1 eq $cmp2) {
1.561 banghart 4353: push(@readonly_files, $file_name);
1.563 banghart 4354: } elsif (!defined($what)) {
4355: push(@readonly_files, $file_name);
1.561 banghart 4356: }
4357: }
4358: }
4359: }
4360: return @readonly_files;
4361: }
1.577 banghart 4362: #-----------------------------------------------------------Get Marked as Read Only Hash
1.561 banghart 4363:
1.577 banghart 4364: sub get_marked_as_readonly_hash {
4365: my ($domain,$user,$what) = @_;
1.613 albertel 4366: my %current_permissions = &dump('file_permissions',$domain,$user);
1.615 albertel 4367: my ($tmp)=keys(%current_permissions);
4368: if ($tmp=~/^error:/) { undef(%current_permissions); }
1.613 albertel 4369:
1.577 banghart 4370: my %readonly_files;
4371: while (my ($file_name,$value) = each(%current_permissions)) {
4372: if (ref($value) eq "ARRAY"){
4373: foreach my $stored_what (@{$value}) {
4374: if ($stored_what eq $what) {
4375: $readonly_files{$file_name} = 'locked';
4376: } elsif (!defined($what)) {
4377: $readonly_files{$file_name} = 'locked';
4378: }
4379: }
4380: }
4381: }
4382: return %readonly_files;
4383: }
1.559 banghart 4384: # ------------------------------------------------------------ Unmark as Read Only
4385:
4386: sub unmark_as_readonly {
1.629 banghart 4387: # unmarks $file_name (if $file_name is defined), or all files locked by $what
4388: # for portfolio submissions, $what contains [$symb,$crsid]
4389: my ($domain,$user,$what,$file_name) = @_;
1.634 albertel 4390: my $symb_crs = $what;
4391: if (ref($what)) { $symb_crs=join('',@$what); }
1.613 albertel 4392: my %current_permissions = &dump('file_permissions',$domain,$user);
1.615 albertel 4393: my ($tmp)=keys(%current_permissions);
4394: if ($tmp=~/^error:/) { undef(%current_permissions); }
1.613 albertel 4395: my @readonly_files = &get_marked_as_readonly($domain,$user,$what);
1.650 albertel 4396: foreach my $file (@readonly_files) {
4397: if (defined($file_name) && ($file_name ne $file)) { next; }
4398: my $current_locks = $current_permissions{$file};
1.563 banghart 4399: my @new_locks;
4400: my @del_keys;
4401: if (ref($current_locks) eq "ARRAY"){
4402: foreach my $locker (@{$current_locks}) {
1.632 albertel 4403: my $compare=$locker;
4404: if (ref($locker)) { $compare=join('',@{$locker}) };
1.650 albertel 4405: if ($compare ne $symb_crs) {
4406: push(@new_locks, $locker);
1.563 banghart 4407: }
4408: }
1.650 albertel 4409: if (scalar(@new_locks) > 0) {
1.563 banghart 4410: $current_permissions{$file} = \@new_locks;
4411: } else {
4412: push(@del_keys, $file);
1.613 albertel 4413: &del('file_permissions',\@del_keys, $domain, $user);
1.650 albertel 4414: delete($current_permissions{$file});
1.563 banghart 4415: }
4416: }
1.561 banghart 4417: }
1.613 albertel 4418: &put('file_permissions',\%current_permissions,$domain,$user);
1.559 banghart 4419: return;
4420: }
1.512 banghart 4421:
1.17 www 4422: # ------------------------------------------------------------ Directory lister
4423:
4424: sub dirlist {
1.253 stredwic 4425: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
4426:
1.18 www 4427: $uri=~s/^\///;
4428: $uri=~s/\/$//;
1.253 stredwic 4429: my ($udom, $uname);
4430: (undef,$udom,$uname)=split(/\//,$uri);
4431: if(defined($userdomain)) {
4432: $udom = $userdomain;
4433: }
4434: if(defined($username)) {
4435: $uname = $username;
4436: }
4437:
4438: my $dirRoot = $perlvar{'lonDocRoot'};
4439: if(defined($alternateDirectoryRoot)) {
4440: $dirRoot = $alternateDirectoryRoot;
4441: $dirRoot =~ s/\/$//;
4442: }
4443:
4444: if($udom) {
4445: if($uname) {
1.605 matthew 4446: my $listing=reply('ls2:'.$dirRoot.'/'.$uri,
1.253 stredwic 4447: homeserver($uname,$udom));
1.605 matthew 4448: my @listing_results;
4449: if ($listing eq 'unknown_cmd') {
4450: $listing=reply('ls:'.$dirRoot.'/'.$uri,
4451: homeserver($uname,$udom));
4452: @listing_results = split(/:/,$listing);
4453: } else {
4454: @listing_results = map { &unescape($_); } split(/:/,$listing);
4455: }
4456: return @listing_results;
1.253 stredwic 4457: } elsif(!defined($alternateDirectoryRoot)) {
4458: my $tryserver;
4459: my %allusers=();
4460: foreach $tryserver (keys %libserv) {
4461: if($hostdom{$tryserver} eq $udom) {
1.605 matthew 4462: my $listing=reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
1.253 stredwic 4463: $udom, $tryserver);
1.605 matthew 4464: my @listing_results;
4465: if ($listing eq 'unknown_cmd') {
4466: $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
4467: $udom, $tryserver);
4468: @listing_results = split(/:/,$listing);
4469: } else {
4470: @listing_results =
4471: map { &unescape($_); } split(/:/,$listing);
4472: }
4473: if ($listing_results[0] ne 'no_such_dir' &&
4474: $listing_results[0] ne 'empty' &&
4475: $listing_results[0] ne 'con_lost') {
4476: foreach (@listing_results) {
1.253 stredwic 4477: my ($entry,@stat)=split(/&/,$_);
4478: $allusers{$entry}=1;
4479: }
4480: }
1.191 harris41 4481: }
1.253 stredwic 4482: }
4483: my $alluserstr='';
4484: foreach (sort keys %allusers) {
4485: $alluserstr.=$_.'&user:';
4486: }
4487: $alluserstr=~s/:$//;
4488: return split(/:/,$alluserstr);
4489: } else {
4490: my @emptyResults = ();
4491: push(@emptyResults, 'missing user name');
4492: return split(':',@emptyResults);
4493: }
4494: } elsif(!defined($alternateDirectoryRoot)) {
4495: my $tryserver;
4496: my %alldom=();
4497: foreach $tryserver (keys %libserv) {
4498: $alldom{$hostdom{$tryserver}}=1;
4499: }
4500: my $alldomstr='';
4501: foreach (sort keys %alldom) {
1.397 albertel 4502: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'/&domain:';
1.253 stredwic 4503: }
4504: $alldomstr=~s/:$//;
4505: return split(/:/,$alldomstr);
4506: } else {
4507: my @emptyResults = ();
4508: push(@emptyResults, 'missing domain');
4509: return split(':',@emptyResults);
1.275 stredwic 4510: }
4511: }
4512:
4513: # --------------------------------------------- GetFileTimestamp
4514: # This function utilizes dirlist and returns the date stamp for
4515: # when it was last modified. It will also return an error of -1
4516: # if an error occurs
4517:
1.410 matthew 4518: ##
4519: ## FIXME: This subroutine assumes its caller knows something about the
4520: ## directory structure of the home server for the student ($root).
4521: ## Not a good assumption to make. Since this is for looking up files
4522: ## in user directories, the full path should be constructed by lond, not
4523: ## whatever machine we request data from.
4524: ##
1.275 stredwic 4525: sub GetFileTimestamp {
4526: my ($studentDomain,$studentName,$filename,$root)=@_;
4527: $studentDomain=~s/\W//g;
4528: $studentName=~s/\W//g;
4529: my $subdir=$studentName.'__';
4530: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
4531: my $proname="$studentDomain/$subdir/$studentName";
4532: $proname .= '/'.$filename;
1.375 matthew 4533: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
4534: $studentName, $root);
1.275 stredwic 4535: my @stats = split('&', $fileStat);
4536: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
1.375 matthew 4537: # @stats contains first the filename, then the stat output
4538: return $stats[10]; # so this is 10 instead of 9.
1.275 stredwic 4539: } else {
4540: return -1;
1.253 stredwic 4541: }
1.26 www 4542: }
4543:
4544: # -------------------------------------------------------- Value of a Condition
4545:
1.40 www 4546: sub directcondval {
4547: my $number=shift;
1.620 albertel 4548: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
1.555 albertel 4549: &Apache::lonuserstate::evalstate();
4550: }
1.620 albertel 4551: if ($env{'user.state.'.$env{'request.course.id'}}) {
4552: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
1.40 www 4553: } else {
4554: return 2;
4555: }
4556: }
4557:
1.26 www 4558: sub condval {
4559: my $condidx=shift;
4560: my $result=0;
1.54 www 4561: my $allpathcond='';
1.191 harris41 4562: foreach (split(/\|/,$condidx)) {
1.620 albertel 4563: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$_})) {
1.54 www 4564: $allpathcond.=
1.620 albertel 4565: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$_}.')|';
1.54 www 4566: }
1.191 harris41 4567: }
1.54 www 4568: $allpathcond=~s/\|$//;
1.620 albertel 4569: if ($env{'request.course.id'}) {
1.54 www 4570: if ($allpathcond) {
1.26 www 4571: my $operand='|';
4572: my @stack;
1.191 harris41 4573: foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {
1.26 www 4574: if ($_ eq '(') {
4575: push @stack,($operand,$result)
4576: } elsif ($_ eq ')') {
4577: my $before=pop @stack;
4578: if (pop @stack eq '&') {
4579: $result=$result>$before?$before:$result;
4580: } else {
4581: $result=$result>$before?$result:$before;
4582: }
4583: } elsif (($_ eq '&') || ($_ eq '|')) {
4584: $operand=$_;
4585: } else {
1.40 www 4586: my $new=directcondval($_);
1.26 www 4587: if ($operand eq '&') {
4588: $result=$result>$new?$new:$result;
4589: } else {
4590: $result=$result>$new?$result:$new;
1.191 harris41 4591: }
1.26 www 4592: }
1.191 harris41 4593: }
1.26 www 4594: }
4595: }
4596: return $result;
1.421 albertel 4597: }
4598:
4599: # ---------------------------------------------------- Devalidate courseresdata
4600:
4601: sub devalidatecourseresdata {
4602: my ($coursenum,$coursedomain)=@_;
4603: my $hashid=$coursenum.':'.$coursedomain;
1.599 albertel 4604: &devalidate_cache_new('courseres',$hashid);
1.28 www 4605: }
4606:
1.200 www 4607: # --------------------------------------------------- Course Resourcedata Query
4608:
1.624 albertel 4609: sub get_courseresdata {
4610: my ($coursenum,$coursedomain)=@_;
1.200 www 4611: my $coursehom=&homeserver($coursenum,$coursedomain);
4612: my $hashid=$coursenum.':'.$coursedomain;
1.599 albertel 4613: my ($result,$cached)=&is_cached_new('courseres',$hashid);
1.624 albertel 4614: my %dumpreply;
1.417 albertel 4615: unless (defined($cached)) {
1.624 albertel 4616: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
1.417 albertel 4617: $result=\%dumpreply;
1.251 albertel 4618: my ($tmp) = keys(%dumpreply);
4619: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
1.599 albertel 4620: &do_cache_new('courseres',$hashid,$result,600);
1.306 albertel 4621: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
4622: return $tmp;
1.416 albertel 4623: } elsif ($tmp =~ /^(error)/) {
1.417 albertel 4624: $result=undef;
1.599 albertel 4625: &do_cache_new('courseres',$hashid,$result,600);
1.250 albertel 4626: }
4627: }
1.624 albertel 4628: return $result;
4629: }
4630:
1.633 albertel 4631: sub devalidateuserresdata {
4632: my ($uname,$udom)=@_;
4633: my $hashid="$udom:$uname";
4634: &devalidate_cache_new('userres',$hashid);
4635: }
4636:
1.624 albertel 4637: sub get_userresdata {
4638: my ($uname,$udom)=@_;
4639: #most student don\'t have any data set, check if there is some data
4640: if (&EXT_cache_status($udom,$uname)) { return undef; }
4641:
4642: my $hashid="$udom:$uname";
4643: my ($result,$cached)=&is_cached_new('userres',$hashid);
4644: if (!defined($cached)) {
4645: my %resourcedata=&dump('resourcedata',$udom,$uname);
4646: $result=\%resourcedata;
4647: &do_cache_new('userres',$hashid,$result,600);
4648: }
4649: my ($tmp)=keys(%$result);
4650: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
4651: return $result;
4652: }
4653: #error 2 occurs when the .db doesn't exist
4654: if ($tmp!~/error: 2 /) {
1.672 albertel 4655: &logthis("<font color=\"blue\">WARNING:".
1.624 albertel 4656: " Trying to get resource data for ".
4657: $uname." at ".$udom.": ".
4658: $tmp."</font>");
4659: } elsif ($tmp=~/error: 2 /) {
1.633 albertel 4660: #&EXT_cache_set($udom,$uname);
4661: &do_cache_new('userres',$hashid,undef,600);
1.636 albertel 4662: undef($tmp); # not really an error so don't send it back
1.624 albertel 4663: }
4664: return $tmp;
4665: }
4666:
4667: sub resdata {
4668: my ($name,$domain,$type,@which)=@_;
4669: my $result;
4670: if ($type eq 'course') {
4671: $result=&get_courseresdata($name,$domain);
4672: } elsif ($type eq 'user') {
4673: $result=&get_userresdata($name,$domain);
4674: }
4675: if (!ref($result)) { return $result; }
1.251 albertel 4676: foreach my $item (@which) {
1.417 albertel 4677: if (defined($result->{$item})) {
4678: return $result->{$item};
1.251 albertel 4679: }
1.250 albertel 4680: }
1.291 albertel 4681: return undef;
1.200 www 4682: }
4683:
1.379 matthew 4684: #
4685: # EXT resource caching routines
4686: #
4687:
4688: sub clear_EXT_cache_status {
1.383 albertel 4689: &delenv('cache.EXT.');
1.379 matthew 4690: }
4691:
4692: sub EXT_cache_status {
4693: my ($target_domain,$target_user) = @_;
1.383 albertel 4694: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.620 albertel 4695: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
1.379 matthew 4696: # We know already the user has no data
4697: return 1;
4698: } else {
4699: return 0;
4700: }
4701: }
4702:
4703: sub EXT_cache_set {
4704: my ($target_domain,$target_user) = @_;
1.383 albertel 4705: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.633 albertel 4706: #&appenv($cachename => time);
1.379 matthew 4707: }
4708:
1.28 www 4709: # --------------------------------------------------------- Value of a Variable
1.58 www 4710: sub EXT {
1.395 albertel 4711: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
1.218 albertel 4712:
1.68 www 4713: unless ($varname) { return ''; }
1.218 albertel 4714: #get real user name/domain, courseid and symb
4715: my $courseid;
1.359 albertel 4716: my $publicuser;
1.427 www 4717: if ($symbparm) {
4718: $symbparm=&get_symb_from_alias($symbparm);
4719: }
1.218 albertel 4720: if (!($uname && $udom)) {
1.360 albertel 4721: (my $cursymb,$courseid,$udom,$uname,$publicuser)=
1.378 matthew 4722: &Apache::lonxml::whichuser($symbparm);
1.218 albertel 4723: if (!$symbparm) { $symbparm=$cursymb; }
4724: } else {
1.620 albertel 4725: $courseid=$env{'request.course.id'};
1.218 albertel 4726: }
1.48 www 4727: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
4728: my $rest;
1.320 albertel 4729: if (defined($therest[0])) {
1.48 www 4730: $rest=join('.',@therest);
4731: } else {
4732: $rest='';
4733: }
1.320 albertel 4734:
1.57 www 4735: my $qualifierrest=$qualifier;
4736: if ($rest) { $qualifierrest.='.'.$rest; }
4737: my $spacequalifierrest=$space;
4738: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 4739: if ($realm eq 'user') {
1.48 www 4740: # --------------------------------------------------------------- user.resource
4741: if ($space eq 'resource') {
1.651 albertel 4742: if ( (defined($Apache::lonhomework::parsing_a_problem)
4743: || defined($Apache::lonhomework::parsing_a_task))
4744: &&
4745: ($symbparm eq &symbread()) ) {
1.335 albertel 4746: return $Apache::lonhomework::history{$qualifierrest};
4747: } else {
1.359 albertel 4748: my %restored;
1.620 albertel 4749: if ($publicuser || $env{'request.state'} eq 'construct') {
1.359 albertel 4750: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
4751: } else {
4752: %restored=&restore($symbparm,$courseid,$udom,$uname);
4753: }
1.335 albertel 4754: return $restored{$qualifierrest};
4755: }
1.48 www 4756: # ----------------------------------------------------------------- user.access
4757: } elsif ($space eq 'access') {
1.218 albertel 4758: # FIXME - not supporting calls for a specific user
1.48 www 4759: return &allowed($qualifier,$rest);
4760: # ------------------------------------------ user.preferences, user.environment
4761: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.620 albertel 4762: if (($uname eq $env{'user.name'}) &&
4763: ($udom eq $env{'user.domain'})) {
4764: return $env{join('.',('environment',$qualifierrest))};
1.218 albertel 4765: } else {
1.359 albertel 4766: my %returnhash;
4767: if (!$publicuser) {
4768: %returnhash=&userenvironment($udom,$uname,
4769: $qualifierrest);
4770: }
1.218 albertel 4771: return $returnhash{$qualifierrest};
4772: }
1.48 www 4773: # ----------------------------------------------------------------- user.course
4774: } elsif ($space eq 'course') {
1.218 albertel 4775: # FIXME - not supporting calls for a specific user
1.620 albertel 4776: return $env{join('.',('request.course',$qualifier))};
1.48 www 4777: # ------------------------------------------------------------------- user.role
4778: } elsif ($space eq 'role') {
1.218 albertel 4779: # FIXME - not supporting calls for a specific user
1.620 albertel 4780: my ($role,$where)=split(/\./,$env{'request.role'});
1.48 www 4781: if ($qualifier eq 'value') {
4782: return $role;
4783: } elsif ($qualifier eq 'extent') {
4784: return $where;
4785: }
4786: # ----------------------------------------------------------------- user.domain
4787: } elsif ($space eq 'domain') {
1.218 albertel 4788: return $udom;
1.48 www 4789: # ------------------------------------------------------------------- user.name
4790: } elsif ($space eq 'name') {
1.218 albertel 4791: return $uname;
1.48 www 4792: # ---------------------------------------------------- Any other user namespace
1.29 www 4793: } else {
1.359 albertel 4794: my %reply;
4795: if (!$publicuser) {
4796: %reply=&get($space,[$qualifierrest],$udom,$uname);
4797: }
4798: return $reply{$qualifierrest};
1.48 www 4799: }
1.236 www 4800: } elsif ($realm eq 'query') {
4801: # ---------------------------------------------- pull stuff out of query string
1.384 albertel 4802: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
4803: [$spacequalifierrest]);
1.620 albertel 4804: return $env{'form.'.$spacequalifierrest};
1.236 www 4805: } elsif ($realm eq 'request') {
1.48 www 4806: # ------------------------------------------------------------- request.browser
4807: if ($space eq 'browser') {
1.430 www 4808: if ($qualifier eq 'textremote') {
1.676 albertel 4809: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
1.430 www 4810: return 1;
4811: } else {
4812: return 0;
4813: }
4814: } else {
1.620 albertel 4815: return $env{'browser.'.$qualifier};
1.430 www 4816: }
1.57 www 4817: # ------------------------------------------------------------ request.filename
4818: } else {
1.620 albertel 4819: return $env{'request.'.$spacequalifierrest};
1.29 www 4820: }
1.28 www 4821: } elsif ($realm eq 'course') {
1.48 www 4822: # ---------------------------------------------------------- course.description
1.620 albertel 4823: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
1.57 www 4824: } elsif ($realm eq 'resource') {
1.165 www 4825:
1.620 albertel 4826: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
1.539 albertel 4827: if (!$symbparm) { $symbparm=&symbread(); }
4828: }
1.693 ! albertel 4829:
! 4830: if ($space eq 'title') {
! 4831: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
! 4832: return &gettitle($symbparm);
! 4833: }
! 4834:
! 4835: if ($space eq 'map') {
! 4836: my ($map) = &decode_symb($symbparm);
! 4837: return &symbread($map);
! 4838: }
! 4839:
! 4840: my ($section, $group, @groups);
1.593 albertel 4841: my ($courselevelm,$courselevel);
1.539 albertel 4842: if ($symbparm && defined($courseid) &&
1.620 albertel 4843: $courseid eq $env{'request.course.id'}) {
1.165 www 4844:
1.218 albertel 4845: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
1.165 www 4846:
1.60 www 4847: # ----------------------------------------------------- Cascading lookup scheme
1.218 albertel 4848: my $symbp=$symbparm;
1.409 www 4849: my $mapp=(&decode_symb($symbp))[0];
1.218 albertel 4850:
4851: my $symbparm=$symbp.'.'.$spacequalifierrest;
4852: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
4853:
1.620 albertel 4854: if (($env{'user.name'} eq $uname) &&
4855: ($env{'user.domain'} eq $udom)) {
4856: $section=$env{'request.course.sec'};
1.691 raeburn 4857: @groups=&sort_course_groups($env{'request.course.groups'},$courseid);
1.684 raeburn 4858: if (@groups > 0) {
4859: @groups = sort(@groups);
4860: }
1.218 albertel 4861: } else {
1.539 albertel 4862: if (! defined($usection)) {
1.551 albertel 4863: $section=&getsection($udom,$uname,$courseid);
1.539 albertel 4864: } else {
4865: $section = $usection;
4866: }
1.684 raeburn 4867: my $grouplist = &get_users_groups($udom,$uname,$courseid);
4868: if ($grouplist) {
1.691 raeburn 4869: @groups=&sort_course_groups($grouplist,$courseid);
1.684 raeburn 4870: }
1.218 albertel 4871: }
4872:
4873: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
4874: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
4875: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
4876:
1.593 albertel 4877: $courselevel=$courseid.'.'.$spacequalifierrest;
1.218 albertel 4878: my $courselevelr=$courseid.'.'.$symbparm;
1.593 albertel 4879: $courselevelm=$courseid.'.'.$mapparm;
1.69 www 4880:
1.60 www 4881: # ----------------------------------------------------------- first, check user
1.624 albertel 4882:
4883: my $userreply=&resdata($uname,$udom,'user',
4884: ($courselevelr,$courselevelm,
4885: $courselevel));
4886: if (defined($userreply)) { return $userreply; }
1.95 www 4887:
1.594 albertel 4888: # ------------------------------------------------ second, check some of course
1.684 raeburn 4889: my $coursereply;
1.691 raeburn 4890: if (@groups > 0) {
4891: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
4892: $mapparm,$spacequalifierrest);
1.684 raeburn 4893: if (defined($coursereply)) { return $coursereply; }
4894: }
1.96 www 4895:
1.684 raeburn 4896: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
1.624 albertel 4897: $env{'course.'.$courseid.'.domain'},
4898: 'course',
4899: ($seclevelr,$seclevelm,$seclevel,
4900: $courselevelr));
1.287 albertel 4901: if (defined($coursereply)) { return $coursereply; }
1.200 www 4902:
1.60 www 4903: # ------------------------------------------------------ third, check map parms
1.218 albertel 4904: my %parmhash=();
4905: my $thisparm='';
4906: if (tie(%parmhash,'GDBM_File',
1.620 albertel 4907: $env{'request.course.fn'}.'_parms.db',
1.256 albertel 4908: &GDBM_READER(),0640)) {
1.218 albertel 4909: $thisparm=$parmhash{$symbparm};
4910: untie(%parmhash);
4911: }
4912: if ($thisparm) { return $thisparm; }
4913: }
1.594 albertel 4914: # ------------------------------------------ fourth, look in resource metadata
1.71 www 4915:
1.218 albertel 4916: $spacequalifierrest=~s/\./\_/;
1.282 albertel 4917: my $filename;
4918: if (!$symbparm) { $symbparm=&symbread(); }
4919: if ($symbparm) {
1.409 www 4920: $filename=(&decode_symb($symbparm))[2];
1.282 albertel 4921: } else {
1.620 albertel 4922: $filename=$env{'request.filename'};
1.282 albertel 4923: }
4924: my $metadata=&metadata($filename,$spacequalifierrest);
1.288 albertel 4925: if (defined($metadata)) { return $metadata; }
1.282 albertel 4926: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
1.288 albertel 4927: if (defined($metadata)) { return $metadata; }
1.142 www 4928:
1.594 albertel 4929: # ---------------------------------------------- fourth, look in rest pf course
1.593 albertel 4930: if ($symbparm && defined($courseid) &&
1.620 albertel 4931: $courseid eq $env{'request.course.id'}) {
1.624 albertel 4932: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
4933: $env{'course.'.$courseid.'.domain'},
4934: 'course',
4935: ($courselevelm,$courselevel));
1.593 albertel 4936: if (defined($coursereply)) { return $coursereply; }
4937: }
1.145 www 4938: # ------------------------------------------------------------------ Cascade up
1.218 albertel 4939: unless ($space eq '0') {
1.336 albertel 4940: my @parts=split(/_/,$space);
4941: my $id=pop(@parts);
4942: my $part=join('_',@parts);
4943: if ($part eq '') { $part='0'; }
4944: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
1.395 albertel 4945: $symbparm,$udom,$uname,$section,1);
1.337 albertel 4946: if (defined($partgeneral)) { return $partgeneral; }
1.218 albertel 4947: }
1.395 albertel 4948: if ($recurse) { return undef; }
4949: my $pack_def=&packages_tab_default($filename,$varname);
4950: if (defined($pack_def)) { return $pack_def; }
1.71 www 4951:
1.48 www 4952: # ---------------------------------------------------- Any other user namespace
4953: } elsif ($realm eq 'environment') {
4954: # ----------------------------------------------------------------- environment
1.620 albertel 4955: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
4956: return $env{'environment.'.$spacequalifierrest};
1.219 albertel 4957: } else {
4958: my %returnhash=&userenvironment($udom,$uname,
4959: $spacequalifierrest);
4960: return $returnhash{$spacequalifierrest};
4961: }
1.28 www 4962: } elsif ($realm eq 'system') {
1.48 www 4963: # ----------------------------------------------------------------- system.time
4964: if ($space eq 'time') {
4965: return time;
4966: }
1.28 www 4967: }
1.48 www 4968: return '';
1.61 www 4969: }
4970:
1.691 raeburn 4971: sub check_group_parms {
4972: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
4973: my @groupitems = ();
4974: my $resultitem;
4975: my @levels = ($symbparm,$mapparm,$what);
4976: foreach my $group (@{$groups}) {
4977: foreach my $level (@levels) {
4978: my $item = $courseid.'.['.$group.'].'.$level;
4979: push(@groupitems,$item);
4980: }
4981: }
4982: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
4983: $env{'course.'.$courseid.'.domain'},
4984: 'course',@groupitems);
4985: return $coursereply;
4986: }
4987:
4988: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
4989: my ($grouplist,$courseid) = @_;
4990: my @groups = split/:/,$grouplist;
4991: if (@groups > 1) {
4992: @groups = sort(@groups);
4993: }
4994: return @groups;
4995: }
4996:
1.395 albertel 4997: sub packages_tab_default {
4998: my ($uri,$varname)=@_;
4999: my (undef,$part,$name)=split(/\./,$varname);
5000: my $packages=&metadata($uri,'packages');
5001: foreach my $package (split(/,/,$packages)) {
5002: my ($pack_type,$pack_part)=split(/_/,$package,2);
1.468 albertel 5003: if (defined($packagetab{"$pack_type&$name&default"})) {
5004: return $packagetab{"$pack_type&$name&default"};
5005: }
1.585 albertel 5006: if ($pack_type eq 'part') { $pack_part='0'; }
1.468 albertel 5007: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
5008: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
1.395 albertel 5009: }
5010: }
5011: return undef;
5012: }
5013:
1.334 albertel 5014: sub add_prefix_and_part {
5015: my ($prefix,$part)=@_;
5016: my $keyroot;
5017: if (defined($prefix) && $prefix !~ /^__/) {
5018: # prefix that has a part already
5019: $keyroot=$prefix;
5020: } elsif (defined($prefix)) {
5021: # prefix that is missing a part
5022: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
5023: } else {
5024: # no prefix at all
5025: if (defined($part)) { $keyroot='_'.$part; }
5026: }
5027: return $keyroot;
5028: }
5029:
1.71 www 5030: # ---------------------------------------------------------------- Get metadata
5031:
1.599 albertel 5032: my %metaentry;
1.71 www 5033: sub metadata {
1.176 www 5034: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
1.71 www 5035: $uri=&declutter($uri);
1.288 albertel 5036: # if it is a non metadata possible uri return quickly
1.529 albertel 5037: if (($uri eq '') ||
5038: (($uri =~ m|^/*adm/|) &&
5039: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
1.423 albertel 5040: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
1.489 albertel 5041: ($uri =~ m|home/[^/]+/public_html/|)) {
1.468 albertel 5042: return undef;
1.288 albertel 5043: }
1.73 www 5044: my $filename=$uri;
5045: $uri=~s/\.meta$//;
1.172 www 5046: #
5047: # Is the metadata already cached?
1.177 www 5048: # Look at timestamp of caching
1.172 www 5049: # Everything is cached by the main uri, libraries are never directly cached
5050: #
1.428 albertel 5051: if (!defined($liburi)) {
1.599 albertel 5052: my ($result,$cached)=&is_cached_new('meta',$uri);
1.428 albertel 5053: if (defined($cached)) { return $result->{':'.$what}; }
5054: }
5055: {
1.172 www 5056: #
5057: # Is this a recursive call for a library?
5058: #
1.599 albertel 5059: # if (! exists($metacache{$uri})) {
5060: # $metacache{$uri}={};
5061: # }
1.171 www 5062: if ($liburi) {
5063: $liburi=&declutter($liburi);
5064: $filename=$liburi;
1.401 bowersj2 5065: } else {
1.599 albertel 5066: &devalidate_cache_new('meta',$uri);
5067: undef(%metaentry);
1.401 bowersj2 5068: }
1.140 www 5069: my %metathesekeys=();
1.73 www 5070: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
1.489 albertel 5071: my $metastring;
1.609 banghart 5072: if ($uri !~ m -^(uploaded|editupload)/-) {
1.543 albertel 5073: my $file=&filelocation('',&clutter($filename));
1.599 albertel 5074: #push(@{$metaentry{$uri.'.file'}},$file);
1.543 albertel 5075: $metastring=&getfile($file);
1.489 albertel 5076: }
1.208 albertel 5077: my $parser=HTML::LCParser->new(\$metastring);
1.71 www 5078: my $token;
1.140 www 5079: undef %metathesekeys;
1.71 www 5080: while ($token=$parser->get_token) {
1.339 albertel 5081: if ($token->[0] eq 'S') {
5082: if (defined($token->[2]->{'package'})) {
1.172 www 5083: #
5084: # This is a package - get package info
5085: #
1.339 albertel 5086: my $package=$token->[2]->{'package'};
5087: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
5088: if (defined($token->[2]->{'id'})) {
5089: $keyroot.='_'.$token->[2]->{'id'};
5090: }
1.599 albertel 5091: if ($metaentry{':packages'}) {
5092: $metaentry{':packages'}.=','.$package.$keyroot;
1.339 albertel 5093: } else {
1.599 albertel 5094: $metaentry{':packages'}=$package.$keyroot;
1.339 albertel 5095: }
1.613 albertel 5096: foreach (sort keys %packagetab) {
1.432 albertel 5097: my $part=$keyroot;
5098: $part=~s/^\_//;
5099: if ($_=~/^\Q$package\E\&/ ||
5100: $_=~/^\Q$package\E_0\&/) {
1.339 albertel 5101: my ($pack,$name,$subp)=split(/\&/,$_);
1.395 albertel 5102: # ignore package.tab specified default values
5103: # here &package_tab_default() will fetch those
5104: if ($subp eq 'default') { next; }
1.339 albertel 5105: my $value=$packagetab{$_};
1.432 albertel 5106: my $unikey;
5107: if ($pack =~ /_0$/) {
5108: $unikey='parameter_0_'.$name;
5109: $part=0;
5110: } else {
5111: $unikey='parameter'.$keyroot.'_'.$name;
5112: }
1.339 albertel 5113: if ($subp eq 'display') {
5114: $value.=' [Part: '.$part.']';
5115: }
1.599 albertel 5116: $metaentry{':'.$unikey.'.part'}=$part;
1.395 albertel 5117: $metathesekeys{$unikey}=1;
1.599 albertel 5118: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
5119: $metaentry{':'.$unikey.'.'.$subp}=$value;
1.339 albertel 5120: }
1.599 albertel 5121: if (defined($metaentry{':'.$unikey.'.default'})) {
5122: $metaentry{':'.$unikey}=
5123: $metaentry{':'.$unikey.'.default'};
1.356 albertel 5124: }
1.339 albertel 5125: }
5126: }
5127: } else {
1.172 www 5128: #
5129: # This is not a package - some other kind of start tag
1.339 albertel 5130: #
5131: my $entry=$token->[1];
5132: my $unikey;
5133: if ($entry eq 'import') {
5134: $unikey='';
5135: } else {
5136: $unikey=$entry;
5137: }
5138: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
5139:
5140: if (defined($token->[2]->{'id'})) {
5141: $unikey.='_'.$token->[2]->{'id'};
5142: }
1.175 www 5143:
1.339 albertel 5144: if ($entry eq 'import') {
1.175 www 5145: #
5146: # Importing a library here
1.339 albertel 5147: #
5148: if ($depthcount<20) {
5149: my $location=$parser->get_text('/import');
5150: my $dir=$filename;
5151: $dir=~s|[^/]*$||;
5152: $location=&filelocation($dir,$location);
5153: foreach (sort(split(/\,/,&metadata($uri,'keys',
5154: $location,$unikey,
5155: $depthcount+1)))) {
1.599 albertel 5156: $metaentry{':'.$_}=$metaentry{':'.$_};
1.339 albertel 5157: $metathesekeys{$_}=1;
5158: }
5159: }
5160: } else {
5161:
5162: if (defined($token->[2]->{'name'})) {
5163: $unikey.='_'.$token->[2]->{'name'};
5164: }
5165: $metathesekeys{$unikey}=1;
5166: foreach (@{$token->[3]}) {
1.599 albertel 5167: $metaentry{':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.339 albertel 5168: }
5169: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
1.599 albertel 5170: my $default=$metaentry{':'.$unikey.'.default'};
1.339 albertel 5171: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
5172: # only ws inside the tag, and not in default, so use default
5173: # as value
1.599 albertel 5174: $metaentry{':'.$unikey}=$default;
1.339 albertel 5175: } else {
1.321 albertel 5176: # either something interesting inside the tag or default
5177: # uninteresting
1.599 albertel 5178: $metaentry{':'.$unikey}=$internaltext;
1.339 albertel 5179: }
1.172 www 5180: # end of not-a-package not-a-library import
1.339 albertel 5181: }
1.172 www 5182: # end of not-a-package start tag
1.339 albertel 5183: }
1.172 www 5184: # the next is the end of "start tag"
1.339 albertel 5185: }
5186: }
1.483 albertel 5187: my ($extension) = ($uri =~ /\.(\w+)$/);
5188: foreach my $key (sort(keys(%packagetab))) {
5189: #no specific packages #how's our extension
5190: if ($key!~/^extension_\Q$extension\E&/) { next; }
1.488 albertel 5191: &metadata_create_package_def($uri,$key,'extension_'.$extension,
1.483 albertel 5192: \%metathesekeys);
5193: }
1.599 albertel 5194: if (!exists($metaentry{':packages'})) {
1.483 albertel 5195: foreach my $key (sort(keys(%packagetab))) {
5196: #no specific packages well let's get default then
5197: if ($key!~/^default&/) { next; }
1.488 albertel 5198: &metadata_create_package_def($uri,$key,'default',
1.483 albertel 5199: \%metathesekeys);
5200: }
5201: }
1.338 www 5202: # are there custom rights to evaluate
1.599 albertel 5203: if ($metaentry{':copyright'} eq 'custom') {
1.339 albertel 5204:
1.338 www 5205: #
5206: # Importing a rights file here
1.339 albertel 5207: #
5208: unless ($depthcount) {
1.599 albertel 5209: my $location=$metaentry{':customdistributionfile'};
1.339 albertel 5210: my $dir=$filename;
5211: $dir=~s|[^/]*$||;
5212: $location=&filelocation($dir,$location);
5213: foreach (sort(split(/\,/,&metadata($uri,'keys',
5214: $location,'_rights',
5215: $depthcount+1)))) {
1.599 albertel 5216: #$metaentry{':'.$_}=$metacache{$uri}->{':'.$_};
1.339 albertel 5217: $metathesekeys{$_}=1;
5218: }
5219: }
5220: }
1.599 albertel 5221: $metaentry{':keys'}=join(',',keys %metathesekeys);
5222: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
5223: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
1.623 albertel 5224: &do_cache_new('meta',$uri,\%metaentry,60*60*24);
1.177 www 5225: # this is the end of "was not already recently cached
1.71 www 5226: }
1.599 albertel 5227: return $metaentry{':'.$what};
1.261 albertel 5228: }
5229:
1.488 albertel 5230: sub metadata_create_package_def {
1.483 albertel 5231: my ($uri,$key,$package,$metathesekeys)=@_;
5232: my ($pack,$name,$subp)=split(/\&/,$key);
5233: if ($subp eq 'default') { next; }
5234:
1.599 albertel 5235: if (defined($metaentry{':packages'})) {
5236: $metaentry{':packages'}.=','.$package;
1.483 albertel 5237: } else {
1.599 albertel 5238: $metaentry{':packages'}=$package;
1.483 albertel 5239: }
5240: my $value=$packagetab{$key};
5241: my $unikey;
5242: $unikey='parameter_0_'.$name;
1.599 albertel 5243: $metaentry{':'.$unikey.'.part'}=0;
1.483 albertel 5244: $$metathesekeys{$unikey}=1;
1.599 albertel 5245: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
5246: $metaentry{':'.$unikey.'.'.$subp}=$value;
1.483 albertel 5247: }
1.599 albertel 5248: if (defined($metaentry{':'.$unikey.'.default'})) {
5249: $metaentry{':'.$unikey}=
5250: $metaentry{':'.$unikey.'.default'};
1.483 albertel 5251: }
5252: }
5253:
1.261 albertel 5254: sub metadata_generate_part0 {
5255: my ($metadata,$metacache,$uri) = @_;
5256: my %allnames;
5257: foreach my $metakey (sort keys %$metadata) {
5258: if ($metakey=~/^parameter\_(.*)/) {
1.428 albertel 5259: my $part=$$metacache{':'.$metakey.'.part'};
5260: my $name=$$metacache{':'.$metakey.'.name'};
1.356 albertel 5261: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
1.261 albertel 5262: $allnames{$name}=$part;
5263: }
5264: }
5265: }
5266: foreach my $name (keys(%allnames)) {
5267: $$metadata{"parameter_0_$name"}=1;
1.428 albertel 5268: my $key=":parameter_0_$name";
1.261 albertel 5269: $$metacache{"$key.part"}='0';
5270: $$metacache{"$key.name"}=$name;
1.428 albertel 5271: $$metacache{"$key.type"}=$$metacache{':parameter_'.
1.261 albertel 5272: $allnames{$name}.'_'.$name.
5273: '.type'};
1.428 albertel 5274: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
1.261 albertel 5275: '.display'};
1.644 www 5276: my $expr='[Part: '.$allnames{$name}.']';
1.479 albertel 5277: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
1.261 albertel 5278: $$metacache{"$key.display"}=$olddis;
5279: }
1.71 www 5280: }
5281:
1.301 www 5282: # ------------------------------------------------- Get the title of a resource
5283:
5284: sub gettitle {
5285: my $urlsymb=shift;
5286: my $symb=&symbread($urlsymb);
1.534 albertel 5287: if ($symb) {
1.620 albertel 5288: my $key=$env{'request.course.id'}."\0".$symb;
1.599 albertel 5289: my ($result,$cached)=&is_cached_new('title',$key);
1.575 albertel 5290: if (defined($cached)) {
5291: return $result;
5292: }
1.534 albertel 5293: my ($map,$resid,$url)=&decode_symb($symb);
5294: my $title='';
5295: my %bighash;
1.620 albertel 5296: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
1.534 albertel 5297: &GDBM_READER(),0640)) {
5298: my $mapid=$bighash{'map_pc_'.&clutter($map)};
5299: $title=$bighash{'title_'.$mapid.'.'.$resid};
5300: untie %bighash;
5301: }
5302: $title=~s/\&colon\;/\:/gs;
5303: if ($title) {
1.599 albertel 5304: return &do_cache_new('title',$key,$title,600);
1.534 albertel 5305: }
5306: $urlsymb=$url;
5307: }
5308: my $title=&metadata($urlsymb,'title');
5309: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
5310: return $title;
1.301 www 5311: }
1.613 albertel 5312:
1.614 albertel 5313: sub get_slot {
5314: my ($which,$cnum,$cdom)=@_;
5315: if (!$cnum || !$cdom) {
5316: (undef,my $courseid)=&Apache::lonxml::whichuser();
1.620 albertel 5317: $cdom=$env{'course.'.$courseid.'.domain'};
5318: $cnum=$env{'course.'.$courseid.'.num'};
1.614 albertel 5319: }
5320: my %slotinfo=&get('slots',[$which],$cdom,$cnum);
5321: &Apache::lonhomework::showhash(%slotinfo);
5322: my ($tmp)=keys(%slotinfo);
5323: if ($tmp=~/^error:/) { return (); }
1.616 albertel 5324: if (ref($slotinfo{$which}) eq 'HASH') {
5325: return %{$slotinfo{$which}};
5326: }
5327: return $slotinfo{$which};
1.614 albertel 5328: }
1.31 www 5329: # ------------------------------------------------- Update symbolic store links
5330:
5331: sub symblist {
5332: my ($mapname,%newhash)=@_;
1.438 www 5333: $mapname=&deversion(&declutter($mapname));
1.31 www 5334: my %hash;
1.620 albertel 5335: if (($env{'request.course.fn'}) && (%newhash)) {
5336: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
1.256 albertel 5337: &GDBM_WRCREAT(),0640)) {
1.191 harris41 5338: foreach (keys %newhash) {
1.601 albertel 5339: $hash{declutter($_)}=&encode_symb($mapname,$newhash{$_}->[1],
5340: $newhash{$_}->[0]);
1.191 harris41 5341: }
1.31 www 5342: if (untie(%hash)) {
5343: return 'ok';
5344: }
5345: }
5346: }
5347: return 'error';
1.212 www 5348: }
5349:
5350: # --------------------------------------------------------------- Verify a symb
5351:
5352: sub symbverify {
1.510 www 5353: my ($symb,$thisurl)=@_;
5354: my $thisfn=$thisurl;
5355: # wrapper not part of symbs
5356: $thisfn=~s/^\/adm\/wrapper//;
1.439 www 5357: $thisfn=&declutter($thisfn);
1.215 www 5358: # direct jump to resource in page or to a sequence - will construct own symbs
5359: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
5360: # check URL part
1.409 www 5361: my ($map,$resid,$url)=&decode_symb($symb);
1.439 www 5362:
1.431 www 5363: unless ($url eq $thisfn) { return 0; }
1.213 www 5364:
1.216 www 5365: $symb=&symbclean($symb);
1.510 www 5366: $thisurl=&deversion($thisurl);
1.439 www 5367: $thisfn=&deversion($thisfn);
1.213 www 5368:
5369: my %bighash;
5370: my $okay=0;
1.431 www 5371:
1.620 albertel 5372: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
1.256 albertel 5373: &GDBM_READER(),0640)) {
1.510 www 5374: my $ids=$bighash{'ids_'.&clutter($thisurl)};
1.216 www 5375: unless ($ids) {
1.510 www 5376: $ids=$bighash{'ids_/'.$thisurl};
1.216 www 5377: }
5378: if ($ids) {
5379: # ------------------------------------------------------------------- Has ID(s)
5380: foreach (split(/\,/,$ids)) {
1.644 www 5381: my ($mapid,$resid)=split(/\./,$_);
1.216 www 5382: if (
5383: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
5384: eq $symb) {
1.620 albertel 5385: if (($env{'request.role.adv'}) ||
5386: $bighash{'encrypted_'.$_} eq $env{'request.enc'}) {
1.582 albertel 5387: $okay=1;
5388: }
5389: }
1.216 www 5390: }
5391: }
1.213 www 5392: untie(%bighash);
5393: }
5394: return $okay;
1.31 www 5395: }
5396:
1.210 www 5397: # --------------------------------------------------------------- Clean-up symb
5398:
5399: sub symbclean {
5400: my $symb=shift;
1.568 albertel 5401: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
1.210 www 5402: # remove version from map
5403: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
1.215 www 5404:
1.210 www 5405: # remove version from URL
5406: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
1.213 www 5407:
1.507 www 5408: # remove wrapper
5409:
1.510 www 5410: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
1.210 www 5411: return $symb;
1.409 www 5412: }
5413:
5414: # ---------------------------------------------- Split symb to find map and url
1.429 albertel 5415:
5416: sub encode_symb {
5417: my ($map,$resid,$url)=@_;
5418: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
5419: }
1.409 www 5420:
5421: sub decode_symb {
1.568 albertel 5422: my $symb=shift;
5423: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
5424: my ($map,$resid,$url)=split(/___/,$symb);
1.413 www 5425: return (&fixversion($map),$resid,&fixversion($url));
5426: }
5427:
5428: sub fixversion {
5429: my $fn=shift;
1.609 banghart 5430: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
1.435 www 5431: my %bighash;
5432: my $uri=&clutter($fn);
1.620 albertel 5433: my $key=$env{'request.course.id'}.'_'.$uri;
1.440 www 5434: # is this cached?
1.599 albertel 5435: my ($result,$cached)=&is_cached_new('courseresversion',$key);
1.440 www 5436: if (defined($cached)) { return $result; }
5437: # unfortunately not cached, or expired
1.620 albertel 5438: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
1.440 www 5439: &GDBM_READER(),0640)) {
5440: if ($bighash{'version_'.$uri}) {
5441: my $version=$bighash{'version_'.$uri};
1.444 www 5442: unless (($version eq 'mostrecent') ||
5443: ($version==&getversion($uri))) {
1.440 www 5444: $uri=~s/\.(\w+)$/\.$version\.$1/;
5445: }
5446: }
5447: untie %bighash;
1.413 www 5448: }
1.599 albertel 5449: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
1.438 www 5450: }
5451:
5452: sub deversion {
5453: my $url=shift;
5454: $url=~s/\.\d+\.(\w+)$/\.$1/;
5455: return $url;
1.210 www 5456: }
5457:
1.31 www 5458: # ------------------------------------------------------ Return symb list entry
5459:
5460: sub symbread {
1.249 www 5461: my ($thisfn,$donotrecurse)=@_;
1.542 albertel 5462: my $cache_str='request.symbread.cached.'.$thisfn;
1.620 albertel 5463: if (defined($env{$cache_str})) { return $env{$cache_str}; }
1.242 www 5464: # no filename provided? try from environment
1.44 www 5465: unless ($thisfn) {
1.620 albertel 5466: if ($env{'request.symb'}) {
5467: return $env{$cache_str}=&symbclean($env{'request.symb'});
1.539 albertel 5468: }
1.620 albertel 5469: $thisfn=$env{'request.filename'};
1.44 www 5470: }
1.569 albertel 5471: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
1.242 www 5472: # is that filename actually a symb? Verify, clean, and return
5473: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
1.539 albertel 5474: if (&symbverify($thisfn,$1)) {
1.620 albertel 5475: return $env{$cache_str}=&symbclean($thisfn);
1.539 albertel 5476: }
1.242 www 5477: }
1.44 www 5478: $thisfn=declutter($thisfn);
1.31 www 5479: my %hash;
1.37 www 5480: my %bighash;
5481: my $syval='';
1.620 albertel 5482: if (($env{'request.course.fn'}) && ($thisfn)) {
1.481 raeburn 5483: my $targetfn = $thisfn;
1.609 banghart 5484: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
1.481 raeburn 5485: $targetfn = 'adm/wrapper/'.$thisfn;
5486: }
1.687 albertel 5487: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
5488: $targetfn=$1;
5489: }
1.620 albertel 5490: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
1.256 albertel 5491: &GDBM_READER(),0640)) {
1.481 raeburn 5492: $syval=$hash{$targetfn};
1.37 www 5493: untie(%hash);
5494: }
5495: # ---------------------------------------------------------- There was an entry
5496: if ($syval) {
1.601 albertel 5497: #unless ($syval=~/\_\d+$/) {
1.620 albertel 5498: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.601 albertel 5499: #&appenv('request.ambiguous' => $thisfn);
1.620 albertel 5500: #return $env{$cache_str}='';
1.601 albertel 5501: #}
5502: #$syval.=$1;
5503: #}
1.37 www 5504: } else {
5505: # ------------------------------------------------------- Was not in symb table
1.620 albertel 5506: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
1.256 albertel 5507: &GDBM_READER(),0640)) {
1.37 www 5508: # ---------------------------------------------- Get ID(s) for current resource
1.280 www 5509: my $ids=$bighash{'ids_'.&clutter($thisfn)};
1.65 www 5510: unless ($ids) {
5511: $ids=$bighash{'ids_/'.$thisfn};
1.242 www 5512: }
5513: unless ($ids) {
5514: # alias?
5515: $ids=$bighash{'mapalias_'.$thisfn};
1.65 www 5516: }
1.37 www 5517: if ($ids) {
5518: # ------------------------------------------------------------------- Has ID(s)
5519: my @possibilities=split(/\,/,$ids);
1.39 www 5520: if ($#possibilities==0) {
5521: # ----------------------------------------------- There is only one possibility
1.37 www 5522: my ($mapid,$resid)=split(/\./,$ids);
1.626 albertel 5523: $syval=&encode_symb($bighash{'map_id_'.$mapid},
5524: $resid,$thisfn);
1.249 www 5525: } elsif (!$donotrecurse) {
1.39 www 5526: # ------------------------------------------ There is more than one possibility
5527: my $realpossible=0;
1.191 harris41 5528: foreach (@possibilities) {
1.39 www 5529: my $file=$bighash{'src_'.$_};
5530: if (&allowed('bre',$file)) {
5531: my ($mapid,$resid)=split(/\./,$_);
5532: if ($bighash{'map_type_'.$mapid} ne 'page') {
5533: $realpossible++;
1.626 albertel 5534: $syval=&encode_symb($bighash{'map_id_'.$mapid},
5535: $resid,$thisfn);
1.39 www 5536: }
5537: }
1.191 harris41 5538: }
1.39 www 5539: if ($realpossible!=1) { $syval=''; }
1.249 www 5540: } else {
5541: $syval='';
1.37 www 5542: }
5543: }
5544: untie(%bighash)
1.481 raeburn 5545: }
1.31 www 5546: }
1.62 www 5547: if ($syval) {
1.620 albertel 5548: return $env{$cache_str}=$syval;
1.62 www 5549: }
1.31 www 5550: }
1.44 www 5551: &appenv('request.ambiguous' => $thisfn);
1.620 albertel 5552: return $env{$cache_str}='';
1.31 www 5553: }
5554:
5555: # ---------------------------------------------------------- Return random seed
5556:
1.32 www 5557: sub numval {
5558: my $txt=shift;
5559: $txt=~tr/A-J/0-9/;
5560: $txt=~tr/a-j/0-9/;
5561: $txt=~tr/K-T/0-9/;
5562: $txt=~tr/k-t/0-9/;
5563: $txt=~tr/U-Z/0-5/;
5564: $txt=~tr/u-z/0-5/;
5565: $txt=~s/\D//g;
1.564 albertel 5566: if ($_64bit) { if ($txt > 2**32) { return -1; } }
1.32 www 5567: return int($txt);
1.368 albertel 5568: }
5569:
1.484 albertel 5570: sub numval2 {
5571: my $txt=shift;
5572: $txt=~tr/A-J/0-9/;
5573: $txt=~tr/a-j/0-9/;
5574: $txt=~tr/K-T/0-9/;
5575: $txt=~tr/k-t/0-9/;
5576: $txt=~tr/U-Z/0-5/;
5577: $txt=~tr/u-z/0-5/;
5578: $txt=~s/\D//g;
5579: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
5580: my $total;
5581: foreach my $val (@txts) { $total+=$val; }
1.564 albertel 5582: if ($_64bit) { if ($total > 2**32) { return -1; } }
1.484 albertel 5583: return int($total);
5584: }
5585:
1.575 albertel 5586: sub numval3 {
5587: use integer;
5588: my $txt=shift;
5589: $txt=~tr/A-J/0-9/;
5590: $txt=~tr/a-j/0-9/;
5591: $txt=~tr/K-T/0-9/;
5592: $txt=~tr/k-t/0-9/;
5593: $txt=~tr/U-Z/0-5/;
5594: $txt=~tr/u-z/0-5/;
5595: $txt=~s/\D//g;
5596: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
5597: my $total;
5598: foreach my $val (@txts) { $total+=$val; }
5599: if ($_64bit) { $total=(($total<<32)>>32); }
5600: return $total;
5601: }
5602:
1.675 albertel 5603: sub digest {
5604: my ($data)=@_;
5605: my $digest=&Digest::MD5::md5($data);
5606: my ($a,$b,$c,$d)=unpack("iiii",$digest);
5607: my ($e,$f);
5608: {
5609: use integer;
5610: $e=($a+$b);
5611: $f=($c+$d);
5612: if ($_64bit) {
5613: $e=(($e<<32)>>32);
5614: $f=(($f<<32)>>32);
5615: }
5616: }
5617: if (wantarray) {
5618: return ($e,$f);
5619: } else {
5620: my $g;
5621: {
5622: use integer;
5623: $g=($e+$f);
5624: if ($_64bit) {
5625: $g=(($g<<32)>>32);
5626: }
5627: }
5628: return $g;
5629: }
5630: }
5631:
1.368 albertel 5632: sub latest_rnd_algorithm_id {
1.675 albertel 5633: return '64bit5';
1.366 albertel 5634: }
1.32 www 5635:
1.503 albertel 5636: sub get_rand_alg {
5637: my ($courseid)=@_;
5638: if (!$courseid) { $courseid=(&Apache::lonxml::whichuser())[1]; }
5639: if ($courseid) {
1.620 albertel 5640: return $env{"course.$courseid.rndseed"};
1.503 albertel 5641: }
5642: return &latest_rnd_algorithm_id();
5643: }
5644:
1.562 albertel 5645: sub validCODE {
5646: my ($CODE)=@_;
5647: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
5648: return 0;
5649: }
5650:
1.491 albertel 5651: sub getCODE {
1.620 albertel 5652: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
1.618 albertel 5653: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
5654: defined($Apache::lonhomework::parsing_a_task) ) &&
5655: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
1.491 albertel 5656: return $Apache::lonhomework::history{'resource.CODE'};
5657: }
5658: return undef;
5659: }
5660:
1.31 www 5661: sub rndseed {
1.155 albertel 5662: my ($symb,$courseid,$domain,$username)=@_;
1.366 albertel 5663:
5664: my ($wsymb,$wcourseid,$wdomain,$wusername)=&Apache::lonxml::whichuser();
1.155 albertel 5665: if (!$symb) {
1.366 albertel 5666: unless ($symb=$wsymb) { return time; }
5667: }
5668: if (!$courseid) { $courseid=$wcourseid; }
5669: if (!$domain) { $domain=$wdomain; }
5670: if (!$username) { $username=$wusername }
1.503 albertel 5671: my $which=&get_rand_alg();
1.491 albertel 5672: if (defined(&getCODE())) {
1.675 albertel 5673: if ($which eq '64bit5') {
5674: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
5675: } elsif ($which eq '64bit4') {
1.575 albertel 5676: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
5677: } else {
5678: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
5679: }
1.675 albertel 5680: } elsif ($which eq '64bit5') {
5681: return &rndseed_64bit5($symb,$courseid,$domain,$username);
1.575 albertel 5682: } elsif ($which eq '64bit4') {
5683: return &rndseed_64bit4($symb,$courseid,$domain,$username);
1.501 albertel 5684: } elsif ($which eq '64bit3') {
5685: return &rndseed_64bit3($symb,$courseid,$domain,$username);
1.443 albertel 5686: } elsif ($which eq '64bit2') {
5687: return &rndseed_64bit2($symb,$courseid,$domain,$username);
1.366 albertel 5688: } elsif ($which eq '64bit') {
5689: return &rndseed_64bit($symb,$courseid,$domain,$username);
5690: }
5691: return &rndseed_32bit($symb,$courseid,$domain,$username);
5692: }
5693:
5694: sub rndseed_32bit {
5695: my ($symb,$courseid,$domain,$username)=@_;
5696: {
5697: use integer;
5698: my $symbchck=unpack("%32C*",$symb) << 27;
5699: my $symbseed=numval($symb) << 22;
5700: my $namechck=unpack("%32C*",$username) << 17;
5701: my $nameseed=numval($username) << 12;
5702: my $domainseed=unpack("%32C*",$domain) << 7;
5703: my $courseseed=unpack("%32C*",$courseid);
5704: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
5705: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5706: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.564 albertel 5707: if ($_64bit) { $num=(($num<<32)>>32); }
1.366 albertel 5708: return $num;
5709: }
5710: }
5711:
5712: sub rndseed_64bit {
5713: my ($symb,$courseid,$domain,$username)=@_;
5714: {
5715: use integer;
5716: my $symbchck=unpack("%32S*",$symb) << 21;
5717: my $symbseed=numval($symb) << 10;
5718: my $namechck=unpack("%32S*",$username);
5719:
5720: my $nameseed=numval($username) << 21;
5721: my $domainseed=unpack("%32S*",$domain) << 10;
5722: my $courseseed=unpack("%32S*",$courseid);
5723:
5724: my $num1=$symbchck+$symbseed+$namechck;
5725: my $num2=$nameseed+$domainseed+$courseseed;
5726: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5727: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.564 albertel 5728: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
5729: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
1.366 albertel 5730: return "$num1,$num2";
1.155 albertel 5731: }
1.366 albertel 5732: }
5733:
1.443 albertel 5734: sub rndseed_64bit2 {
5735: my ($symb,$courseid,$domain,$username)=@_;
5736: {
5737: use integer;
5738: # strings need to be an even # of cahracters long, it it is odd the
5739: # last characters gets thrown away
5740: my $symbchck=unpack("%32S*",$symb.' ') << 21;
5741: my $symbseed=numval($symb) << 10;
5742: my $namechck=unpack("%32S*",$username.' ');
5743:
5744: my $nameseed=numval($username) << 21;
1.501 albertel 5745: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5746: my $courseseed=unpack("%32S*",$courseid.' ');
5747:
5748: my $num1=$symbchck+$symbseed+$namechck;
5749: my $num2=$nameseed+$domainseed+$courseseed;
5750: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5751: #&Apache::lonxml::debug("rndseed :$num:$symb");
5752: return "$num1,$num2";
5753: }
5754: }
5755:
5756: sub rndseed_64bit3 {
5757: my ($symb,$courseid,$domain,$username)=@_;
5758: {
5759: use integer;
5760: # strings need to be an even # of cahracters long, it it is odd the
5761: # last characters gets thrown away
5762: my $symbchck=unpack("%32S*",$symb.' ') << 21;
5763: my $symbseed=numval2($symb) << 10;
5764: my $namechck=unpack("%32S*",$username.' ');
5765:
5766: my $nameseed=numval2($username) << 21;
1.443 albertel 5767: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5768: my $courseseed=unpack("%32S*",$courseid.' ');
5769:
5770: my $num1=$symbchck+$symbseed+$namechck;
5771: my $num2=$nameseed+$domainseed+$courseseed;
5772: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
1.564 albertel 5773: #&Apache::lonxml::debug("rndseed :$num1:$num2:$_64bit");
5774: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
5775:
1.503 albertel 5776: return "$num1:$num2";
1.443 albertel 5777: }
5778: }
5779:
1.575 albertel 5780: sub rndseed_64bit4 {
5781: my ($symb,$courseid,$domain,$username)=@_;
5782: {
5783: use integer;
5784: # strings need to be an even # of cahracters long, it it is odd the
5785: # last characters gets thrown away
5786: my $symbchck=unpack("%32S*",$symb.' ') << 21;
5787: my $symbseed=numval3($symb) << 10;
5788: my $namechck=unpack("%32S*",$username.' ');
5789:
5790: my $nameseed=numval3($username) << 21;
5791: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5792: my $courseseed=unpack("%32S*",$courseid.' ');
5793:
5794: my $num1=$symbchck+$symbseed+$namechck;
5795: my $num2=$nameseed+$domainseed+$courseseed;
5796: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5797: #&Apache::lonxml::debug("rndseed :$num1:$num2:$_64bit");
5798: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
5799:
5800: return "$num1:$num2";
5801: }
5802: }
5803:
1.675 albertel 5804: sub rndseed_64bit5 {
5805: my ($symb,$courseid,$domain,$username)=@_;
5806: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
5807: return "$num1:$num2";
5808: }
5809:
1.366 albertel 5810: sub rndseed_CODE_64bit {
5811: my ($symb,$courseid,$domain,$username)=@_;
1.155 albertel 5812: {
1.366 albertel 5813: use integer;
1.443 albertel 5814: my $symbchck=unpack("%32S*",$symb.' ') << 16;
1.484 albertel 5815: my $symbseed=numval2($symb);
1.491 albertel 5816: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
5817: my $CODEseed=numval(&getCODE());
1.443 albertel 5818: my $courseseed=unpack("%32S*",$courseid.' ');
1.484 albertel 5819: my $num1=$symbseed+$CODEchck;
5820: my $num2=$CODEseed+$courseseed+$symbchck;
5821: #&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
1.366 albertel 5822: #&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
1.564 albertel 5823: if ($_64bit) { $num1=(($num1<<32)>>32); }
5824: if ($_64bit) { $num2=(($num2<<32)>>32); }
1.503 albertel 5825: return "$num1:$num2";
1.366 albertel 5826: }
5827: }
5828:
1.575 albertel 5829: sub rndseed_CODE_64bit4 {
5830: my ($symb,$courseid,$domain,$username)=@_;
5831: {
5832: use integer;
5833: my $symbchck=unpack("%32S*",$symb.' ') << 16;
5834: my $symbseed=numval3($symb);
5835: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
5836: my $CODEseed=numval3(&getCODE());
5837: my $courseseed=unpack("%32S*",$courseid.' ');
5838: my $num1=$symbseed+$CODEchck;
5839: my $num2=$CODEseed+$courseseed+$symbchck;
5840: #&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
5841: #&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
5842: if ($_64bit) { $num1=(($num1<<32)>>32); }
5843: if ($_64bit) { $num2=(($num2<<32)>>32); }
5844: return "$num1:$num2";
5845: }
5846: }
5847:
1.675 albertel 5848: sub rndseed_CODE_64bit5 {
5849: my ($symb,$courseid,$domain,$username)=@_;
5850: my $code = &getCODE();
5851: my ($num1,$num2)=&digest("$symb,$courseid,$code");
5852: return "$num1:$num2";
5853: }
5854:
1.366 albertel 5855: sub setup_random_from_rndseed {
5856: my ($rndseed)=@_;
1.503 albertel 5857: if ($rndseed =~/([,:])/) {
5858: my ($num1,$num2)=split(/[,:]/,$rndseed);
1.366 albertel 5859: &Math::Random::random_set_seed(abs($num1),abs($num2));
5860: } else {
5861: &Math::Random::random_set_seed_from_phrase($rndseed);
1.98 albertel 5862: }
1.36 albertel 5863: }
5864:
1.474 albertel 5865: sub latest_receipt_algorithm_id {
5866: return 'receipt2';
5867: }
5868:
1.480 www 5869: sub recunique {
5870: my $fucourseid=shift;
5871: my $unique;
1.620 albertel 5872: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
5873: $unique=$env{"course.$fucourseid.internal.encseed"};
1.480 www 5874: } else {
5875: $unique=$perlvar{'lonReceipt'};
5876: }
5877: return unpack("%32C*",$unique);
5878: }
5879:
5880: sub recprefix {
5881: my $fucourseid=shift;
5882: my $prefix;
1.620 albertel 5883: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
5884: $prefix=$env{"course.$fucourseid.internal.encpref"};
1.480 www 5885: } else {
5886: $prefix=$perlvar{'lonHostID'};
5887: }
5888: return unpack("%32C*",$prefix);
5889: }
5890:
1.76 www 5891: sub ireceipt {
1.474 albertel 5892: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
1.76 www 5893: my $cuname=unpack("%32C*",$funame);
5894: my $cudom=unpack("%32C*",$fudom);
5895: my $cucourseid=unpack("%32C*",$fucourseid);
5896: my $cusymb=unpack("%32C*",$fusymb);
1.480 www 5897: my $cunique=&recunique($fucourseid);
1.474 albertel 5898: my $cpart=unpack("%32S*",$part);
1.480 www 5899: my $return =&recprefix($fucourseid).'-';
1.620 albertel 5900: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
5901: $env{'request.state'} eq 'construct') {
1.474 albertel 5902: &Apache::lonxml::debug("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname).
5903: " and ".($cpart%$cudom));
5904:
5905: $return.= ($cunique%$cuname+
5906: $cunique%$cudom+
5907: $cusymb%$cuname+
5908: $cusymb%$cudom+
5909: $cucourseid%$cuname+
5910: $cucourseid%$cudom+
5911: $cpart%$cuname+
5912: $cpart%$cudom);
5913: } else {
5914: $return.= ($cunique%$cuname+
5915: $cunique%$cudom+
5916: $cusymb%$cuname+
5917: $cusymb%$cudom+
5918: $cucourseid%$cuname+
5919: $cucourseid%$cudom);
5920: }
5921: return $return;
1.76 www 5922: }
5923:
5924: sub receipt {
1.474 albertel 5925: my ($part)=@_;
5926: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
5927: return &ireceipt($name,$domain,$courseid,$symb,$part);
1.76 www 5928: }
1.260 ng 5929:
1.36 albertel 5930: # ------------------------------------------------------------ Serves up a file
1.472 albertel 5931: # returns either the contents of the file or
5932: # -1 if the file doesn't exist
1.481 raeburn 5933: #
5934: # if the target is a file that was uploaded via DOCS,
5935: # a check will be made to see if a current copy exists on the local server,
5936: # if it does this will be served, otherwise a copy will be retrieved from
5937: # the home server for the course and stored in /home/httpd/html/userfiles on
5938: # the local server.
1.472 albertel 5939:
1.36 albertel 5940: sub getfile {
1.538 albertel 5941: my ($file) = @_;
1.609 banghart 5942: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
1.538 albertel 5943: &repcopy($file);
5944: return &readfile($file);
5945: }
5946:
5947: sub repcopy_userfile {
5948: my ($file)=@_;
1.609 banghart 5949: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
1.610 albertel 5950: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1.538 albertel 5951: my ($cdom,$cnum,$filename) =
5952: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+([^/]+)/+([^/]+)/+(.*)|);
5953: my ($info,$rtncode);
5954: my $uri="/uploaded/$cdom/$cnum/$filename";
5955: if (-e "$file") {
5956: my @fileinfo = stat($file);
5957: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5958: if ($lwpresp ne 'ok') {
5959: if ($rtncode eq '404') {
1.538 albertel 5960: unlink($file);
1.482 albertel 5961: }
1.517 albertel 5962: #my $ua=new LWP::UserAgent;
1.538 albertel 5963: #my $request=new HTTP::Request('GET',&tokenwrapper($uri));
1.517 albertel 5964: #my $response=$ua->request($request);
5965: #if ($response->is_success()) {
5966: # return $response->content;
5967: # } else {
5968: # return -1;
5969: # }
1.482 albertel 5970: return -1;
5971: }
5972: if ($info < $fileinfo[9]) {
1.607 raeburn 5973: return 'ok';
1.482 albertel 5974: }
5975: $info = '';
1.538 albertel 5976: $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5977: if ($lwpresp ne 'ok') {
5978: return -1;
5979: }
5980: } else {
1.538 albertel 5981: my $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5982: if ($lwpresp ne 'ok') {
1.517 albertel 5983: my $ua=new LWP::UserAgent;
1.538 albertel 5984: my $request=new HTTP::Request('GET',&tokenwrapper($uri));
1.517 albertel 5985: my $response=$ua->request($request);
5986: if ($response->is_success()) {
1.538 albertel 5987: $info=$response->content;
1.517 albertel 5988: } else {
5989: return -1;
5990: }
1.482 albertel 5991: }
5992: my @parts = ($cdom,$cnum);
5993: if ($filename =~ m|^(.+)/[^/]+$|) {
5994: push @parts, split(/\//,$1);
1.518 albertel 5995: }
1.538 albertel 5996: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
1.482 albertel 5997: foreach my $part (@parts) {
5998: $path .= '/'.$part;
5999: if (!-e $path) {
6000: mkdir($path,0770);
6001: }
6002: }
6003: }
1.538 albertel 6004: open(FILE,">$file");
1.482 albertel 6005: print FILE $info;
6006: close(FILE);
1.607 raeburn 6007: return 'ok';
1.481 raeburn 6008: }
6009:
1.517 albertel 6010: sub tokenwrapper {
6011: my $uri=shift;
1.552 albertel 6012: $uri=~s|^http\://([^/]+)||;
6013: $uri=~s|^/||;
1.620 albertel 6014: $env{'user.environment'}=~/\/([^\/]+)\.id/;
1.517 albertel 6015: my $token=$1;
1.552 albertel 6016: my (undef,$udom,$uname,$file)=split('/',$uri,4);
6017: if ($udom && $uname && $file) {
6018: $file=~s|(\?\.*)*$||;
1.620 albertel 6019: &appenv("userfile.$udom/$uname/$file" => $env{'request.course.id'});
1.552 albertel 6020: return 'http://'.$hostname{ &homeserver($uname,$udom)}.'/'.$uri.
1.517 albertel 6021: (($uri=~/\?/)?'&':'?').'token='.$token.
6022: '&tokenissued='.$perlvar{'lonHostID'};
6023: } else {
6024: return '/adm/notfound.html';
6025: }
6026: }
6027:
1.481 raeburn 6028: sub getuploaded {
6029: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
6030: $uri=~s/^\///;
6031: $uri = 'http://'.$hostname{ &homeserver($cnum,$cdom)}.'/raw/'.$uri;
6032: my $ua=new LWP::UserAgent;
6033: my $request=new HTTP::Request($reqtype,$uri);
6034: my $response=$ua->request($request);
6035: $$rtncode = $response->code;
1.482 albertel 6036: if (! $response->is_success()) {
6037: return 'failed';
6038: }
6039: if ($reqtype eq 'HEAD') {
1.486 www 6040: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
1.482 albertel 6041: } elsif ($reqtype eq 'GET') {
6042: $$info = $response->content;
1.472 albertel 6043: }
1.482 albertel 6044: return 'ok';
1.36 albertel 6045: }
6046:
1.481 raeburn 6047: sub readfile {
6048: my $file = shift;
6049: if ( (! -e $file ) || ($file eq '') ) { return -1; };
6050: my $fh;
6051: open($fh,"<$file");
6052: my $a='';
6053: while (<$fh>) { $a .=$_; }
6054: return $a;
6055: }
6056:
1.36 albertel 6057: sub filelocation {
1.590 banghart 6058: my ($dir,$file) = @_;
6059: my $location;
6060: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
6061: if ($file=~m:^/~:) { # is a contruction space reference
6062: $location = $file;
6063: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.649 albertel 6064: } elsif ($file=~m:^/home/[^/]*/public_html/:) {
6065: # is a correct contruction space reference
6066: $location = $file;
1.609 banghart 6067: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
1.590 banghart 6068: my ($udom,$uname,$filename)=
1.609 banghart 6069: ($file=~m -^/+(?:uploaded|editupload)/+([^/]+)/+([^/]+)/+(.*)$-);
1.590 banghart 6070: my $home=&homeserver($uname,$udom);
6071: my $is_me=0;
6072: my @ids=¤t_machine_ids();
6073: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
6074: if ($is_me) {
6075: $location=&Apache::loncommon::propath($udom,$uname).
6076: '/userfiles/'.$filename;
6077: } else {
6078: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
6079: $udom.'/'.$uname.'/'.$filename;
6080: }
6081: } else {
6082: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
6083: $file=~s:^/res/:/:;
6084: if ( !( $file =~ m:^/:) ) {
6085: $location = $dir. '/'.$file;
6086: } else {
6087: $location = '/home/httpd/html/res'.$file;
6088: }
1.59 albertel 6089: }
1.590 banghart 6090: $location=~s://+:/:g; # remove duplicate /
6091: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
6092: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
6093: return $location;
1.46 www 6094: }
1.36 albertel 6095:
1.46 www 6096: sub hreflocation {
6097: my ($dir,$file)=@_;
1.460 albertel 6098: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
1.666 albertel 6099: $file=filelocation($dir,$file);
6100: }
6101: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
6102: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
6103: } elsif ($file=~m-/home/(\w+)/public_html/-) {
1.462 albertel 6104: $file=~s-^/home/(\w+)/public_html/-/~$1/-;
1.666 albertel 6105: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
6106: $file=~s-^/home/httpd/lonUsers/([^/]*)/./././([^/]*)/userfiles/
6107: -/uploaded/$1/$2/-x;
1.46 www 6108: }
1.462 albertel 6109: return $file;
1.465 albertel 6110: }
6111:
6112: sub current_machine_domains {
6113: my $hostname=$hostname{$perlvar{'lonHostID'}};
6114: my @domains;
6115: while( my($id, $name) = each(%hostname)) {
1.467 matthew 6116: # &logthis("-$id-$name-$hostname-");
1.465 albertel 6117: if ($hostname eq $name) {
6118: push(@domains,$hostdom{$id});
6119: }
6120: }
6121: return @domains;
6122: }
6123:
6124: sub current_machine_ids {
6125: my $hostname=$hostname{$perlvar{'lonHostID'}};
6126: my @ids;
6127: while( my($id, $name) = each(%hostname)) {
1.467 matthew 6128: # &logthis("-$id-$name-$hostname-");
1.465 albertel 6129: if ($hostname eq $name) {
6130: push(@ids,$id);
6131: }
6132: }
6133: return @ids;
1.31 www 6134: }
6135:
6136: # ------------------------------------------------------------- Declutters URLs
6137:
6138: sub declutter {
6139: my $thisfn=shift;
1.569 albertel 6140: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
1.479 albertel 6141: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
1.31 www 6142: $thisfn=~s/^\///;
6143: $thisfn=~s/^res\///;
1.235 www 6144: $thisfn=~s/\?.+$//;
1.268 www 6145: return $thisfn;
6146: }
6147:
6148: # ------------------------------------------------------------- Clutter up URLs
6149:
6150: sub clutter {
6151: my $thisfn='/'.&declutter(shift);
1.609 banghart 6152: unless ($thisfn=~/^\/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)\//) {
1.270 www 6153: $thisfn='/res'.$thisfn;
6154: }
1.31 www 6155: return $thisfn;
1.12 www 6156: }
6157:
1.557 albertel 6158: sub freeze_escape {
6159: my ($value)=@_;
6160: if (ref($value)) {
6161: $value=&nfreeze($value);
6162: return '__FROZEN__'.&escape($value);
6163: }
6164: return &escape($value);
6165: }
6166:
1.12 www 6167: # -------------------------------------------------------- Escape Special Chars
6168:
6169: sub escape {
6170: my $str=shift;
6171: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
6172: return $str;
6173: }
6174:
6175: # ----------------------------------------------------- Un-Escape Special Chars
6176:
6177: sub unescape {
6178: my $str=shift;
6179: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
6180: return $str;
6181: }
1.11 www 6182:
1.557 albertel 6183: sub thaw_unescape {
6184: my ($value)=@_;
6185: if ($value =~ /^__FROZEN__/) {
6186: substr($value,0,10,undef);
6187: $value=&unescape($value);
6188: return &thaw($value);
6189: }
6190: return &unescape($value);
6191: }
6192:
1.436 albertel 6193: sub correct_line_ends {
6194: my ($result)=@_;
6195: $$result =~s/\r\n/\n/mg;
6196: $$result =~s/\r/\n/mg;
1.415 albertel 6197: }
1.1 albertel 6198: # ================================================================ Main Program
6199:
1.184 www 6200: sub goodbye {
1.204 albertel 6201: &logthis("Starting Shut down");
1.443 albertel 6202: #not converted to using infrastruture and probably shouldn't be
1.599 albertel 6203: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&freeze(\%badServerCache))));
1.443 albertel 6204: #converted
1.599 albertel 6205: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
6206: &logthis(sprintf("%-20s is %s",'%homecache',length(&freeze(\%homecache))));
6207: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&freeze(\%titlecache))));
6208: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&freeze(\%courseresdatacache))));
1.425 albertel 6209: #1.1 only
1.599 albertel 6210: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&freeze(\%userresdatacache))));
6211: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&freeze(\%getsectioncache))));
6212: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&freeze(\%courseresversioncache))));
6213: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&freeze(\%resversioncache))));
6214: &logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
6215: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
6216: &logthis(sprintf("%-20s is %s",'hits',$hits));
1.184 www 6217: &flushcourselogs();
6218: &logthis("Shutting down");
1.362 albertel 6219: return DONE;
1.184 www 6220: }
6221:
1.179 www 6222: BEGIN {
1.228 harris41 6223: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
1.195 www 6224: unless ($readit) {
1.217 harris41 6225: {
1.581 matthew 6226: # FIXME: Use LONCAPA::Configuration::read_conf here and omit next block
1.448 albertel 6227: open(my $config,"</etc/httpd/conf/loncapa.conf");
1.217 harris41 6228:
6229: while (my $configline=<$config>) {
1.484 albertel 6230: if ($configline=~/\S/ && $configline =~ /^[^\#]*PerlSetVar/) {
1.1 albertel 6231: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 6232: chomp($varvalue);
1.1 albertel 6233: $perlvar{$varname}=$varvalue;
6234: }
6235: }
1.448 albertel 6236: close($config);
1.1 albertel 6237: }
1.227 harris41 6238: {
1.448 albertel 6239: open(my $config,"</etc/httpd/conf/loncapa_apache.conf");
1.227 harris41 6240:
6241: while (my $configline=<$config>) {
6242: if ($configline =~ /^[^\#]*PerlSetVar/) {
6243: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
6244: chomp($varvalue);
6245: $perlvar{$varname}=$varvalue;
6246: }
6247: }
1.448 albertel 6248: close($config);
1.227 harris41 6249: }
1.1 albertel 6250:
1.327 albertel 6251: # ------------------------------------------------------------ Read domain file
6252: {
6253: %domaindescription = ();
6254: %domain_auth_def = ();
6255: %domain_auth_arg_def = ();
1.448 albertel 6256: my $fh;
6257: if (open($fh,"<".$Apache::lonnet::perlvar{'lonTabDir'}.'/domain.tab')) {
1.327 albertel 6258: while (<$fh>) {
1.390 matthew 6259: next if (/^(\#|\s*$)/);
6260: # next if /^\#/;
1.327 albertel 6261: chomp;
1.403 www 6262: my ($domain, $domain_description, $def_auth, $def_auth_arg,
1.685 raeburn 6263: $def_lang, $city, $longi, $lati, $primary) = split(/:/,$_);
1.403 www 6264: $domain_auth_def{$domain}=$def_auth;
1.327 albertel 6265: $domain_auth_arg_def{$domain}=$def_auth_arg;
1.403 www 6266: $domaindescription{$domain}=$domain_description;
6267: $domain_lang_def{$domain}=$def_lang;
6268: $domain_city{$domain}=$city;
6269: $domain_longi{$domain}=$longi;
6270: $domain_lati{$domain}=$lati;
1.685 raeburn 6271: $domain_primary{$domain}=$primary;
1.403 www 6272:
1.448 albertel 6273: # &logthis("Domain.tab: $domain, $domain_auth_def{$domain}, $domain_auth_arg_def{$domain},$domaindescription{$domain}");
1.327 albertel 6274: # &logthis("Domain.tab: $domain ".$domaindescription{$domain} );
1.448 albertel 6275: }
1.327 albertel 6276: }
1.448 albertel 6277: close ($fh);
1.327 albertel 6278: }
6279:
6280:
1.1 albertel 6281: # ------------------------------------------------------------- Read hosts file
6282: {
1.448 albertel 6283: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
1.1 albertel 6284:
6285: while (my $configline=<$config>) {
1.303 matthew 6286: next if ($configline =~ /^(\#|\s*$)/);
1.154 www 6287: chomp($configline);
1.595 albertel 6288: my ($id,$domain,$role,$name)=split(/:/,$configline);
1.597 albertel 6289: $name=~s/\s//g;
1.595 albertel 6290: if ($id && $domain && $role && $name) {
1.252 albertel 6291: $hostname{$id}=$name;
6292: $hostdom{$id}=$domain;
6293: if ($role eq 'library') { $libserv{$id}=$name; }
1.245 www 6294: }
1.1 albertel 6295: }
1.448 albertel 6296: close($config);
1.619 albertel 6297: # FIXME: dev server don't want this, production servers _do_ want this
1.654 albertel 6298: #&get_iphost();
1.1 albertel 6299: }
6300:
1.598 albertel 6301: sub get_iphost {
6302: if (%iphost) { return %iphost; }
1.653 albertel 6303: my %name_to_ip;
1.598 albertel 6304: foreach my $id (keys(%hostname)) {
6305: my $name=$hostname{$id};
1.653 albertel 6306: my $ip;
6307: if (!exists($name_to_ip{$name})) {
6308: $ip = gethostbyname($name);
6309: if (!$ip || length($ip) ne 4) {
6310: &logthis("Skipping host $id name $name no IP found\n");
6311: next;
6312: }
6313: $ip=inet_ntoa($ip);
6314: $name_to_ip{$name} = $ip;
6315: } else {
6316: $ip = $name_to_ip{$name};
1.598 albertel 6317: }
6318: push(@{$iphost{$ip}},$id);
6319: }
6320: return %iphost;
6321: }
6322:
1.1 albertel 6323: # ------------------------------------------------------ Read spare server file
6324: {
1.448 albertel 6325: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
1.1 albertel 6326:
6327: while (my $configline=<$config>) {
6328: chomp($configline);
1.284 matthew 6329: if ($configline) {
1.1 albertel 6330: $spareid{$configline}=1;
6331: }
6332: }
1.448 albertel 6333: close($config);
1.1 albertel 6334: }
1.11 www 6335: # ------------------------------------------------------------ Read permissions
6336: {
1.448 albertel 6337: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
1.11 www 6338:
6339: while (my $configline=<$config>) {
1.448 albertel 6340: chomp($configline);
6341: if ($configline) {
6342: my ($role,$perm)=split(/ /,$configline);
6343: if ($perm ne '') { $pr{$role}=$perm; }
6344: }
1.11 www 6345: }
1.448 albertel 6346: close($config);
1.11 www 6347: }
6348:
6349: # -------------------------------------------- Read plain texts for permissions
6350: {
1.448 albertel 6351: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
1.11 www 6352:
6353: while (my $configline=<$config>) {
1.448 albertel 6354: chomp($configline);
6355: if ($configline) {
6356: my ($short,$plain)=split(/:/,$configline);
6357: if ($plain ne '') { $prp{$short}=$plain; }
6358: }
1.135 www 6359: }
1.448 albertel 6360: close($config);
1.135 www 6361: }
6362:
6363: # ---------------------------------------------------------- Read package table
6364: {
1.448 albertel 6365: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
1.135 www 6366:
6367: while (my $configline=<$config>) {
1.483 albertel 6368: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
1.448 albertel 6369: chomp($configline);
6370: my ($short,$plain)=split(/:/,$configline);
6371: my ($pack,$name)=split(/\&/,$short);
6372: if ($plain ne '') {
6373: $packagetab{$pack.'&'.$name.'&name'}=$name;
6374: $packagetab{$short}=$plain;
6375: }
1.11 www 6376: }
1.448 albertel 6377: close($config);
1.329 matthew 6378: }
6379:
6380: # ------------- set up temporary directory
6381: {
6382: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
6383:
1.11 www 6384: }
6385:
1.599 albertel 6386: $memcache=new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.185 www 6387:
1.281 www 6388: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
1.186 www 6389: $dumpcount=0;
1.22 www 6390:
1.163 harris41 6391: &logtouch();
1.672 albertel 6392: &logthis('<font color="yellow">INFO: Read configuration</font>');
1.195 www 6393: $readit=1;
1.564 albertel 6394: {
6395: use integer;
6396: my $test=(2**32)+1;
1.568 albertel 6397: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
1.564 albertel 6398: &logthis(" Detected 64bit platform ($_64bit)");
6399: }
1.195 www 6400: }
1.1 albertel 6401: }
1.179 www 6402:
1.1 albertel 6403: 1;
1.191 harris41 6404: __END__
6405:
1.243 albertel 6406: =pod
6407:
1.191 harris41 6408: =head1 NAME
6409:
1.243 albertel 6410: Apache::lonnet - Subroutines to ask questions about things in the network.
1.191 harris41 6411:
6412: =head1 SYNOPSIS
6413:
1.243 albertel 6414: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
1.191 harris41 6415:
6416: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
6417:
1.243 albertel 6418: Common parameters:
6419:
6420: =over 4
6421:
6422: =item *
6423:
6424: $uname : an internal username (if $cname expecting a course Id specifically)
6425:
6426: =item *
6427:
6428: $udom : a domain (if $cdom expecting a course's domain specifically)
6429:
6430: =item *
6431:
6432: $symb : a resource instance identifier
6433:
6434: =item *
6435:
6436: $namespace : the name of a .db file that contains the data needed or
6437: being set.
6438:
6439: =back
6440:
1.394 bowersj2 6441: =head1 OVERVIEW
1.191 harris41 6442:
1.394 bowersj2 6443: lonnet provides subroutines which interact with the
6444: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
6445: about classes, users, and resources.
1.243 albertel 6446:
6447: For many of these objects you can also use this to store data about
6448: them or modify them in various ways.
1.191 harris41 6449:
1.394 bowersj2 6450: =head2 Symbs
1.191 harris41 6451:
1.394 bowersj2 6452: To identify a specific instance of a resource, LON-CAPA uses symbols
6453: or "symbs"X<symb>. These identifiers are built from the URL of the
6454: map, the resource number of the resource in the map, and the URL of
6455: the resource itself. The latter is somewhat redundant, but might help
6456: if maps change.
6457:
6458: An example is
6459:
6460: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
6461:
6462: The respective map entry is
6463:
6464: <resource id="19" src="/res/msu/korte/tests/part12.problem"
6465: title="Problem 2">
6466: </resource>
6467:
6468: Symbs are used by the random number generator, as well as to store and
6469: restore data specific to a certain instance of for example a problem.
6470:
6471: =head2 Storing And Retrieving Data
6472:
6473: X<store()>X<cstore()>X<restore()>Three of the most important functions
6474: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
6475: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
6476: is is the non-critical message twin of cstore. These functions are for
6477: handlers to store a perl hash to a user's permanent data space in an
6478: easy manner, and to retrieve it again on another call. It is expected
6479: that a handler would use this once at the beginning to retrieve data,
6480: and then again once at the end to send only the new data back.
6481:
6482: The data is stored in the user's data directory on the user's
6483: homeserver under the ID of the course.
6484:
6485: The hash that is returned by restore will have all of the previous
6486: value for all of the elements of the hash.
6487:
6488: Example:
6489:
6490: #creating a hash
6491: my %hash;
6492: $hash{'foo'}='bar';
6493:
6494: #storing it
6495: &Apache::lonnet::cstore(\%hash);
6496:
6497: #changing a value
6498: $hash{'foo'}='notbar';
6499:
6500: #adding a new value
6501: $hash{'bar'}='foo';
6502: &Apache::lonnet::cstore(\%hash);
6503:
6504: #retrieving the hash
6505: my %history=&Apache::lonnet::restore();
6506:
6507: #print the hash
6508: foreach my $key (sort(keys(%history))) {
6509: print("\%history{$key} = $history{$key}");
6510: }
6511:
6512: Will print out:
1.191 harris41 6513:
1.394 bowersj2 6514: %history{1:foo} = bar
6515: %history{1:keys} = foo:timestamp
6516: %history{1:timestamp} = 990455579
6517: %history{2:bar} = foo
6518: %history{2:foo} = notbar
6519: %history{2:keys} = foo:bar:timestamp
6520: %history{2:timestamp} = 990455580
6521: %history{bar} = foo
6522: %history{foo} = notbar
6523: %history{timestamp} = 990455580
6524: %history{version} = 2
6525:
6526: Note that the special hash entries C<keys>, C<version> and
6527: C<timestamp> were added to the hash. C<version> will be equal to the
6528: total number of versions of the data that have been stored. The
6529: C<timestamp> attribute will be the UNIX time the hash was
6530: stored. C<keys> is available in every historical section to list which
6531: keys were added or changed at a specific historical revision of a
6532: hash.
6533:
6534: B<Warning>: do not store the hash that restore returns directly. This
6535: will cause a mess since it will restore the historical keys as if the
6536: were new keys. I.E. 1:foo will become 1:1:foo etc.
1.191 harris41 6537:
1.394 bowersj2 6538: Calling convention:
1.191 harris41 6539:
1.394 bowersj2 6540: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
6541: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
1.191 harris41 6542:
1.394 bowersj2 6543: For more detailed information, see lonnet specific documentation.
1.191 harris41 6544:
1.394 bowersj2 6545: =head1 RETURN MESSAGES
1.191 harris41 6546:
1.394 bowersj2 6547: =over 4
1.191 harris41 6548:
1.394 bowersj2 6549: =item * B<con_lost>: unable to contact remote host
1.191 harris41 6550:
1.394 bowersj2 6551: =item * B<con_delayed>: unable to contact remote host, message will be delivered
6552: when the connection is brought back up
1.191 harris41 6553:
1.394 bowersj2 6554: =item * B<con_failed>: unable to contact remote host and unable to save message
6555: for later delivery
1.191 harris41 6556:
1.394 bowersj2 6557: =item * B<error:>: an error a occured, a description of the error follows the :
1.191 harris41 6558:
1.394 bowersj2 6559: =item * B<no_such_host>: unable to fund a host associated with the user/domain
1.243 albertel 6560: that was requested
1.191 harris41 6561:
1.243 albertel 6562: =back
1.191 harris41 6563:
1.243 albertel 6564: =head1 PUBLIC SUBROUTINES
1.191 harris41 6565:
1.243 albertel 6566: =head2 Session Environment Functions
1.191 harris41 6567:
1.243 albertel 6568: =over 4
1.191 harris41 6569:
1.394 bowersj2 6570: =item *
6571: X<appenv()>
6572: B<appenv(%hash)>: the value of %hash is written to
6573: the user envirnoment file, and will be restored for each access this
1.620 albertel 6574: user makes during this session, also modifies the %env for the current
1.394 bowersj2 6575: process
1.191 harris41 6576:
6577: =item *
1.394 bowersj2 6578: X<delenv()>
6579: B<delenv($regexp)>: removes all items from the session
6580: environment file that matches the regular expression in $regexp. The
1.620 albertel 6581: values are also delted from the current processes %env.
1.191 harris41 6582:
1.243 albertel 6583: =back
6584:
6585: =head2 User Information
1.191 harris41 6586:
1.243 albertel 6587: =over 4
1.191 harris41 6588:
6589: =item *
1.394 bowersj2 6590: X<queryauthenticate()>
6591: B<queryauthenticate($uname,$udom)>: try to determine user's current
1.191 harris41 6592: authentication scheme
6593:
6594: =item *
1.394 bowersj2 6595: X<authenticate()>
6596: B<authenticate($uname,$upass,$udom)>: try to
6597: authenticate user from domain's lib servers (first use the current
6598: one). C<$upass> should be the users password.
1.191 harris41 6599:
6600: =item *
1.394 bowersj2 6601: X<homeserver()>
6602: B<homeserver($uname,$udom)>: find the server which has
6603: the user's directory and files (there must be only one), this caches
6604: the answer, and also caches if there is a borken connection.
1.191 harris41 6605:
6606: =item *
1.394 bowersj2 6607: X<idget()>
6608: B<idget($udom,@ids)>: find the usernames behind a list of IDs
6609: (IDs are a unique resource in a domain, there must be only 1 ID per
6610: username, and only 1 username per ID in a specific domain) (returns
6611: hash: id=>name,id=>name)
1.191 harris41 6612:
6613: =item *
1.394 bowersj2 6614: X<idrget()>
6615: B<idrget($udom,@unames)>: find the IDs behind a list of
6616: usernames (returns hash: name=>id,name=>id)
1.191 harris41 6617:
6618: =item *
1.394 bowersj2 6619: X<idput()>
6620: B<idput($udom,%ids)>: store away a list of names and associated IDs
1.191 harris41 6621:
6622: =item *
1.394 bowersj2 6623: X<rolesinit()>
6624: B<rolesinit($udom,$username,$authhost)>: get user privileges
1.243 albertel 6625:
6626: =item *
1.551 albertel 6627: X<getsection()>
6628: B<getsection($udom,$uname,$cname)>: finds the section of student in the
1.243 albertel 6629: course $cname, return section name/number or '' for "not in course"
6630: and '-1' for "no section"
6631:
6632: =item *
1.394 bowersj2 6633: X<userenvironment()>
6634: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
1.243 albertel 6635: passed in @what from the requested user's environment, returns a hash
6636:
6637: =back
6638:
6639: =head2 User Roles
6640:
6641: =over 4
6642:
6643: =item *
6644:
6645: allowed($priv,$uri) : check for a user privilege; returns codes for allowed
6646: actions
6647: F: full access
6648: U,I,K: authentication modes (cxx only)
6649: '': forbidden
6650: 1: user needs to choose course
6651: 2: browse allowed
6652:
6653: =item *
6654:
6655: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
6656: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
6657: and course level
6658:
6659: =item *
6660:
6661: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
6662: explanation of a user role term
6663:
6664: =back
6665:
6666: =head2 User Modification
6667:
6668: =over 4
6669:
6670: =item *
6671:
6672: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
6673: user for the level given by URL. Optional start and end dates (leave empty
6674: string or zero for "no date")
1.191 harris41 6675:
6676: =item *
6677:
1.243 albertel 6678: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
6679: change a users, password, possible return values are: ok,
6680: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
6681: refused
1.191 harris41 6682:
6683: =item *
6684:
1.243 albertel 6685: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
1.191 harris41 6686:
6687: =item *
6688:
1.243 albertel 6689: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
6690: modify user
1.191 harris41 6691:
6692: =item *
6693:
1.286 matthew 6694: modifystudent
6695:
6696: modify a students enrollment and identification information.
6697: The course id is resolved based on the current users environment.
6698: This means the envoking user must be a course coordinator or otherwise
6699: associated with a course.
6700:
1.297 matthew 6701: This call is essentially a wrapper for lonnet::modifyuser and
6702: lonnet::modify_student_enrollment
1.286 matthew 6703:
6704: Inputs:
6705:
6706: =over 4
6707:
6708: =item B<$udom> Students loncapa domain
6709:
6710: =item B<$uname> Students loncapa login name
6711:
6712: =item B<$uid> Students id/student number
6713:
6714: =item B<$umode> Students authentication mode
6715:
6716: =item B<$upass> Students password
6717:
6718: =item B<$first> Students first name
6719:
6720: =item B<$middle> Students middle name
6721:
6722: =item B<$last> Students last name
6723:
6724: =item B<$gene> Students generation
6725:
6726: =item B<$usec> Students section in course
6727:
6728: =item B<$end> Unix time of the roles expiration
6729:
6730: =item B<$start> Unix time of the roles start date
6731:
6732: =item B<$forceid> If defined, allow $uid to be changed
6733:
6734: =item B<$desiredhome> server to use as home server for student
6735:
6736: =back
1.297 matthew 6737:
6738: =item *
6739:
6740: modify_student_enrollment
6741:
6742: Change a students enrollment status in a class. The environment variable
6743: 'role.request.course' must be defined for this function to proceed.
6744:
6745: Inputs:
6746:
6747: =over 4
6748:
6749: =item $udom, students domain
6750:
6751: =item $uname, students name
6752:
6753: =item $uid, students user id
6754:
6755: =item $first, students first name
6756:
6757: =item $middle
6758:
6759: =item $last
6760:
6761: =item $gene
6762:
6763: =item $usec
6764:
6765: =item $end
6766:
6767: =item $start
6768:
6769: =back
6770:
1.191 harris41 6771:
6772: =item *
6773:
1.243 albertel 6774: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
6775: custom role; give a custom role to a user for the level given by URL. Specify
6776: name and domain of role author, and role name
1.191 harris41 6777:
6778: =item *
6779:
1.243 albertel 6780: revokerole($udom,$uname,$url,$role) : revoke a role for url
1.191 harris41 6781:
6782: =item *
6783:
1.243 albertel 6784: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
6785:
6786: =back
6787:
6788: =head2 Course Infomation
6789:
6790: =over 4
1.191 harris41 6791:
6792: =item *
6793:
1.631 albertel 6794: coursedescription($courseid) : returns a hash of information about the
6795: specified course id, including all environment settings for the
6796: course, the description of the course will be in the hash under the
6797: key 'description'
1.191 harris41 6798:
6799: =item *
6800:
1.624 albertel 6801: resdata($name,$domain,$type,@which) : request for current parameter
6802: setting for a specific $type, where $type is either 'course' or 'user',
6803: @what should be a list of parameters to ask about. This routine caches
6804: answers for 5 minutes.
1.243 albertel 6805:
6806: =back
6807:
6808: =head2 Course Modification
6809:
6810: =over 4
1.191 harris41 6811:
6812: =item *
6813:
1.243 albertel 6814: writecoursepref($courseid,%prefs) : write preferences (environment
6815: database) for a course
1.191 harris41 6816:
6817: =item *
6818:
1.243 albertel 6819: createcourse($udom,$description,$url) : make/modify course
6820:
6821: =back
6822:
6823: =head2 Resource Subroutines
6824:
6825: =over 4
1.191 harris41 6826:
6827: =item *
6828:
1.243 albertel 6829: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
1.191 harris41 6830:
6831: =item *
6832:
1.243 albertel 6833: repcopy($filename) : subscribes to the requested file, and attempts to
6834: replicate from the owning library server, Might return
1.607 raeburn 6835: 'unavailable', 'not_found', 'forbidden', 'ok', or
6836: 'bad_request', also attempts to grab the metadata for the
1.243 albertel 6837: resource. Expects the local filesystem pathname
6838: (/home/httpd/html/res/....)
6839:
6840: =back
6841:
6842: =head2 Resource Information
6843:
6844: =over 4
1.191 harris41 6845:
6846: =item *
6847:
1.243 albertel 6848: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
6849: a vairety of different possible values, $varname should be a request
6850: string, and the other parameters can be used to specify who and what
6851: one is asking about.
6852:
6853: Possible values for $varname are environment.lastname (or other item
6854: from the envirnment hash), user.name (or someother aspect about the
6855: user), resource.0.maxtries (or some other part and parameter of a
6856: resource)
1.204 albertel 6857:
6858: =item *
6859:
1.243 albertel 6860: directcondval($number) : get current value of a condition; reads from a state
6861: string
1.204 albertel 6862:
6863: =item *
6864:
1.243 albertel 6865: condval($condidx) : value of condition index based on state
1.204 albertel 6866:
6867: =item *
6868:
1.243 albertel 6869: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
6870: resource's metadata, $what should be either a specific key, or either
6871: 'keys' (to get a list of possible keys) or 'packages' to get a list of
6872: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
6873:
6874: this function automatically caches all requests
1.191 harris41 6875:
6876: =item *
6877:
1.243 albertel 6878: metadata_query($query,$custom,$customshow) : make a metadata query against the
6879: network of library servers; returns file handle of where SQL and regex results
6880: will be stored for query
1.191 harris41 6881:
6882: =item *
6883:
1.243 albertel 6884: symbread($filename) : return symbolic list entry (filename argument optional);
6885: returns the data handle
1.191 harris41 6886:
6887: =item *
6888:
1.243 albertel 6889: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
1.582 albertel 6890: a possible symb for the URL in $thisfn, and if is an encryypted
6891: resource that the user accessed using /enc/ returns a 1 on success, 0
6892: on failure, user must be in a course, as it assumes the existance of
1.620 albertel 6893: the course initial hash, and uses $env('request.course.id'}
1.243 albertel 6894:
1.191 harris41 6895:
6896: =item *
6897:
1.243 albertel 6898: symbclean($symb) : removes versions numbers from a symb, returns the
6899: cleaned symb
1.191 harris41 6900:
6901: =item *
6902:
1.243 albertel 6903: is_on_map($uri) : checks if the $uri is somewhere on the current
6904: course map, user must be in a course for it to work.
1.191 harris41 6905:
6906: =item *
6907:
1.243 albertel 6908: numval($salt) : return random seed value (addend for rndseed)
1.191 harris41 6909:
6910: =item *
6911:
1.243 albertel 6912: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
6913: a random seed, all arguments are optional, if they aren't sent it uses the
6914: environment to derive them. Note: if symb isn't sent and it can't get one
6915: from &symbread it will use the current time as its return value
1.191 harris41 6916:
6917: =item *
6918:
1.243 albertel 6919: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
6920: unfakeable, receipt
1.191 harris41 6921:
6922: =item *
6923:
1.620 albertel 6924: receipt() : API to ireceipt working off of env values; given out to users
1.191 harris41 6925:
6926: =item *
6927:
1.243 albertel 6928: countacc($url) : count the number of accesses to a given URL
1.191 harris41 6929:
6930: =item *
6931:
1.243 albertel 6932: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
1.191 harris41 6933:
6934: =item *
6935:
1.243 albertel 6936: checkin($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 $tcrsid)
1.191 harris41 6937:
6938: =item *
6939:
1.243 albertel 6940: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
1.191 harris41 6941:
6942: =item *
6943:
1.243 albertel 6944: devalidate($symb) : devalidate temporary spreadsheet calculations,
6945: forcing spreadsheet to reevaluate the resource scores next time.
6946:
6947: =back
6948:
6949: =head2 Storing/Retreiving Data
6950:
6951: =over 4
1.191 harris41 6952:
6953: =item *
6954:
1.243 albertel 6955: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
6956: for this url; hashref needs to be given and should be a \%hashname; the
6957: remaining args aren't required and if they aren't passed or are '' they will
1.620 albertel 6958: be derived from the env
1.191 harris41 6959:
6960: =item *
6961:
1.243 albertel 6962: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
6963: uses critical subroutine
1.191 harris41 6964:
6965: =item *
6966:
1.243 albertel 6967: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
6968: all args are optional
1.191 harris41 6969:
6970: =item *
6971:
1.243 albertel 6972: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
6973: works very similar to store/cstore, but all data is stored in a
6974: temporary location and can be reset using tmpreset, $storehash should
6975: be a hash reference, returns nothing on success
1.191 harris41 6976:
6977: =item *
6978:
1.243 albertel 6979: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
6980: similar to restore, but all data is stored in a temporary location and
6981: can be reset using tmpreset. Returns a hash of values on success,
6982: error string otherwise.
1.191 harris41 6983:
6984: =item *
6985:
1.243 albertel 6986: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
6987: deltes all keys for $symb form the temporary storage hash.
1.191 harris41 6988:
6989: =item *
6990:
1.243 albertel 6991: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
6992: reference filled in from namesp ($udom and $uname are optional)
1.191 harris41 6993:
6994: =item *
6995:
1.243 albertel 6996: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
6997: namesp ($udom and $uname are optional)
1.191 harris41 6998:
6999: =item *
7000:
1.243 albertel 7001: dump($namespace,$udom,$uname,$regexp) :
7002: dumps the complete (or key matching regexp) namespace into a hash
7003: ($udom, $uname and $regexp are optional)
1.449 matthew 7004:
7005: =item *
7006:
7007: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
7008: $store can be a scalar, an array reference, or if the amount to be
7009: incremented is > 1, a hash reference.
7010:
7011: ($udom and $uname are optional)
1.191 harris41 7012:
7013: =item *
7014:
1.243 albertel 7015: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
7016: ($udom and $uname are optional)
1.191 harris41 7017:
7018: =item *
7019:
1.524 raeburn 7020: putstore($namespace,$storehash,$udomain,$uname) : stores hash in namesp
7021: keys used in storehash include version information (e.g., 1:$symb:message etc.) as
7022: used in records written by &store and retrieved by &restore. This function
7023: was created for use in editing discussion posts, without incrementing the
7024: version number included in the key for a particular post. The colon
7025: separated list of attribute names (e.g., the value associated with the key
7026: 1:keys:$symb) is also generated and passed in the ampersand separated
7027: items sent to lonnet::reply().
7028:
7029: =item *
7030:
1.243 albertel 7031: cput($namespace,$storehash,$udom,$uname) : critical put
7032: ($udom and $uname are optional)
1.191 harris41 7033:
7034: =item *
7035:
1.243 albertel 7036: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
7037: reference filled in from namesp (encrypts the return communication)
7038: ($udom and $uname are optional)
1.191 harris41 7039:
7040: =item *
7041:
1.243 albertel 7042: log($udom,$name,$home,$message) : write to permanent log for user; use
7043: critical subroutine
7044:
7045: =back
7046:
7047: =head2 Network Status Functions
7048:
7049: =over 4
1.191 harris41 7050:
7051: =item *
7052:
7053: dirlist($uri) : return directory list based on URI
7054:
7055: =item *
7056:
1.243 albertel 7057: spareserver() : find server with least workload from spare.tab
7058:
7059: =back
7060:
7061: =head2 Apache Request
7062:
7063: =over 4
1.191 harris41 7064:
7065: =item *
7066:
1.243 albertel 7067: ssi($url,%hash) : server side include, does a complete request cycle on url to
7068: localhost, posts hash
7069:
7070: =back
7071:
7072: =head2 Data to String to Data
7073:
7074: =over 4
1.191 harris41 7075:
7076: =item *
7077:
1.243 albertel 7078: hash2str(%hash) : convert a hash into a string complete with escaping and '='
7079: and '&' separators, supports elements that are arrayrefs and hashrefs
1.191 harris41 7080:
7081: =item *
7082:
1.243 albertel 7083: hashref2str($hashref) : convert a hashref into a string complete with
7084: escaping and '=' and '&' separators, supports elements that are
7085: arrayrefs and hashrefs
1.191 harris41 7086:
7087: =item *
7088:
1.243 albertel 7089: arrayref2str($arrayref) : convert an arrayref into a string complete
7090: with escaping and '&' separators, supports elements that are arrayrefs
7091: and hashrefs
1.191 harris41 7092:
7093: =item *
7094:
1.243 albertel 7095: str2hash($string) : convert string to hash using unescaping and
7096: splitting on '=' and '&', supports elements that are arrayrefs and
7097: hashrefs
1.191 harris41 7098:
7099: =item *
7100:
1.243 albertel 7101: str2array($string) : convert string to hash using unescaping and
7102: splitting on '&', supports elements that are arrayrefs and hashrefs
7103:
7104: =back
7105:
7106: =head2 Logging Routines
7107:
7108: =over 4
7109:
7110: These routines allow one to make log messages in the lonnet.log and
7111: lonnet.perm logfiles.
1.191 harris41 7112:
7113: =item *
7114:
1.243 albertel 7115: logtouch() : make sure the logfile, lonnet.log, exists
1.191 harris41 7116:
7117: =item *
7118:
1.243 albertel 7119: logthis() : append message to the normal lonnet.log file, it gets
7120: preiodically rolled over and deleted.
1.191 harris41 7121:
7122: =item *
7123:
1.243 albertel 7124: logperm() : append a permanent message to lonnet.perm.log, this log
7125: file never gets deleted by any automated portion of the system, only
7126: messages of critical importance should go in here.
7127:
7128: =back
7129:
7130: =head2 General File Helper Routines
7131:
7132: =over 4
1.191 harris41 7133:
7134: =item *
7135:
1.481 raeburn 7136: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
7137: (a) files in /uploaded
7138: (i) If a local copy of the file exists -
7139: compares modification date of local copy with last-modified date for
7140: definitive version stored on home server for course. If local copy is
7141: stale, requests a new version from the home server and stores it.
7142: If the original has been removed from the home server, then local copy
7143: is unlinked.
7144: (ii) If local copy does not exist -
7145: requests the file from the home server and stores it.
7146:
7147: If $caller is 'uploadrep':
7148: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
7149: for request for files originally uploaded via DOCS.
7150: - returns 'ok' if fresh local copy now available, -1 otherwise.
7151:
7152: Otherwise:
7153: This indicates a call from the content generation phase of the request.
7154: - returns the entire contents of the file or -1.
7155:
7156: (b) files in /res
7157: - returns the entire contents of a file or -1;
7158: it properly subscribes to and replicates the file if neccessary.
1.191 harris41 7159:
7160: =item *
7161:
1.243 albertel 7162: filelocation($dir,$file) : returns file system location of a file
7163: based on URI; meant to be "fairly clean" absolute reference, $dir is a
7164: directory that relative $file lookups are to looked in ($dir of /a/dir
7165: and a file of ../bob will become /a/bob)
1.191 harris41 7166:
7167: =item *
7168:
7169: hreflocation($dir,$file) : returns file system location or a URL; same as
7170: filelocation except for hrefs
7171:
7172: =item *
7173:
7174: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
7175:
1.243 albertel 7176: =back
7177:
1.608 albertel 7178: =head2 Usererfile file routines (/uploaded*)
7179:
7180: =over 4
7181:
7182: =item *
7183:
7184: userfileupload(): main rotine for putting a file in a user or course's
7185: filespace, arguments are,
7186:
1.620 albertel 7187: formname - required - this is the name of the element in $env where the
1.608 albertel 7188: filename, and the contents of the file to create/modifed exist
1.620 albertel 7189: the filename is in $env{'form.'.$formname.'.filename'} and the
7190: contents of the file is located in $env{'form.'.$formname}
1.608 albertel 7191: coursedoc - if true, store the file in the course of the active role
7192: of the current user
7193: subdir - required - subdirectory to put the file in under ../userfiles/
7194: if undefined, it will be placed in "unknown"
7195:
7196: (This routine calls clean_filename() to remove any dangerous
7197: characters from the filename, and then calls finuserfileupload() to
7198: complete the transaction)
7199:
7200: returns either the url of the uploaded file (/uploaded/....) if successful
7201: and /adm/notfound.html if unsuccessful
7202:
7203: =item *
7204:
7205: clean_filename(): routine for cleaing a filename up for storage in
7206: userfile space, argument is:
7207:
7208: filename - proposed filename
7209:
7210: returns: the new clean filename
7211:
7212: =item *
7213:
7214: finishuserfileupload(): routine that creaes and sends the file to
7215: userspace, probably shouldn't be called directly
7216:
7217: docuname: username or courseid of destination for the file
7218: docudom: domain of user/course of destination for the file
7219: formname: same as for userfileupload()
7220: fname: filename (inculding subdirectories) for the file
7221:
7222: returns either the url of the uploaded file (/uploaded/....) if successful
7223: and /adm/notfound.html if unsuccessful
7224:
7225: =item *
7226:
7227: renameuserfile(): renames an existing userfile to a new name
7228:
7229: Args:
7230: docuname: username or courseid of destination for the file
7231: docudom: domain of user/course of destination for the file
7232: old: current file name (including any subdirs under userfiles)
7233: new: desired file name (including any subdirs under userfiles)
7234:
7235: =item *
7236:
7237: mkdiruserfile(): creates a directory is a userfiles dir
7238:
7239: Args:
7240: docuname: username or courseid of destination for the file
7241: docudom: domain of user/course of destination for the file
7242: dir: dir to create (including any subdirs under userfiles)
7243:
7244: =item *
7245:
7246: removeuserfile(): removes a file that exists in userfiles
7247:
7248: Args:
7249: docuname: username or courseid of destination for the file
7250: docudom: domain of user/course of destination for the file
7251: fname: filname to delete (including any subdirs under userfiles)
7252:
7253: =item *
7254:
7255: removeuploadedurl(): convience function for removeuserfile()
7256:
7257: Args:
7258: url: a full /uploaded/... url to delete
7259:
7260: =back
7261:
1.243 albertel 7262: =head2 HTTP Helper Routines
7263:
7264: =over 4
7265:
1.191 harris41 7266: =item *
7267:
7268: escape() : unpack non-word characters into CGI-compatible hex codes
7269:
7270: =item *
7271:
7272: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
7273:
1.243 albertel 7274: =back
7275:
7276: =head1 PRIVATE SUBROUTINES
7277:
7278: =head2 Underlying communication routines (Shouldn't call)
7279:
7280: =over 4
7281:
7282: =item *
7283:
7284: subreply() : tries to pass a message to lonc, returns con_lost if incapable
7285:
7286: =item *
7287:
7288: reply() : uses subreply to send a message to remote machine, logs all failures
7289:
7290: =item *
7291:
7292: critical() : passes a critical message to another server; if cannot
7293: get through then place message in connection buffer directory and
7294: returns con_delayed, if incapable of saving message, returns
7295: con_failed
7296:
7297: =item *
7298:
7299: reconlonc() : tries to reconnect lonc client processes.
7300:
7301: =back
7302:
7303: =head2 Resource Access Logging
7304:
7305: =over 4
7306:
7307: =item *
7308:
7309: flushcourselogs() : flush (save) buffer logs and access logs
7310:
7311: =item *
7312:
7313: courselog($what) : save message for course in hash
7314:
7315: =item *
7316:
7317: courseacclog($what) : save message for course using &courselog(). Perform
7318: special processing for specific resource types (problems, exams, quizzes, etc).
7319:
1.191 harris41 7320: =item *
7321:
7322: goodbye() : flush course logs and log shutting down; it is called in srm.conf
7323: as a PerlChildExitHandler
1.243 albertel 7324:
7325: =back
7326:
7327: =head2 Other
7328:
7329: =over 4
7330:
7331: =item *
7332:
7333: symblist($mapname,%newhash) : update symbolic storage links
1.191 harris41 7334:
7335: =back
7336:
7337: =cut
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