Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.617
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
1.617 ! albertel 4: # $Id: lonnet.pm,v 1.616 2005/03/28 17:54:06 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
1.349 www 40: %courselogs %accesshash %userrolehash $processmarker $dumpcount
1.599 albertel 41: %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseownerbuf
42: %domaindescription %domain_auth_def %domain_auth_arg_def
1.564 albertel 43: %domain_lang_def %domain_city %domain_longi %domain_lati $tmpdir $_64bit);
1.403 www 44:
1.1 albertel 45: use IO::Socket;
1.31 www 46: use GDBM_File;
1.8 www 47: use Apache::Constants qw(:common :http);
1.208 albertel 48: use HTML::LCParser;
1.88 www 49: use Fcntl qw(:flock);
1.414 www 50: use Apache::lonlocal;
1.557 albertel 51: use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw nfreeze);
1.539 albertel 52: use Time::HiRes qw( gettimeofday tv_interval );
1.599 albertel 53: use Cache::Memcached;
1.195 www 54: my $readit;
1.550 foxr 55: my $max_connection_retries = 10; # Or some such value.
1.1 albertel 56:
1.449 matthew 57: =pod
58:
59: =head1 Package Variables
60:
61: These are largely undocumented, so if you decipher one please note it here.
62:
63: =over 4
64:
65: =item $processmarker
66:
67: Contains the time this process was started and this servers host id.
68:
69: =item $dumpcount
70:
71: Counts the number of times a message log flush has been attempted (regardless
72: of success) by this process. Used as part of the filename when messages are
73: delayed.
74:
75: =back
76:
77: =cut
78:
79:
1.1 albertel 80: # --------------------------------------------------------------------- Logging
81:
1.163 harris41 82: sub logtouch {
83: my $execdir=$perlvar{'lonDaemons'};
1.448 albertel 84: unless (-e "$execdir/logs/lonnet.log") {
85: open(my $fh,">>$execdir/logs/lonnet.log");
1.163 harris41 86: close $fh;
87: }
88: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
89: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
90: }
91:
1.1 albertel 92: sub logthis {
93: my $message=shift;
94: my $execdir=$perlvar{'lonDaemons'};
95: my $now=time;
96: my $local=localtime($now);
1.448 albertel 97: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
98: print $fh "$local ($$): $message\n";
99: close($fh);
100: }
1.1 albertel 101: return 1;
102: }
103:
104: sub logperm {
105: my $message=shift;
106: my $execdir=$perlvar{'lonDaemons'};
107: my $now=time;
108: my $local=localtime($now);
1.448 albertel 109: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
110: print $fh "$now:$message:$local\n";
111: close($fh);
112: }
1.1 albertel 113: return 1;
114: }
115:
116: # -------------------------------------------------- Non-critical communication
117: sub subreply {
118: my ($cmd,$server)=@_;
119: my $peerfile="$perlvar{'lonSockDir'}/$server";
1.549 foxr 120: #
121: # With loncnew process trimming, there's a timing hole between lonc server
122: # process exit and the master server picking up the listen on the AF_UNIX
123: # socket. In that time interval, a lock file will exist:
124:
125: my $lockfile=$peerfile.".lock";
126: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
127: sleep(1);
128: }
129: # At this point, either a loncnew parent is listening or an old lonc
1.550 foxr 130: # or loncnew child is listening so we can connect or everything's dead.
1.549 foxr 131: #
1.550 foxr 132: # We'll give the connection a few tries before abandoning it. If
133: # connection is not possible, we'll con_lost back to the client.
134: #
135: my $client;
136: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
137: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
138: Type => SOCK_STREAM,
139: Timeout => 10);
140: if($client) {
141: last; # Connected!
142: }
143: sleep(1); # Try again later if failed connection.
144: }
145: my $answer;
146: if ($client) {
147: print $client "$cmd\n";
148: $answer=<$client>;
149: if (!$answer) { $answer="con_lost"; }
150: chomp($answer);
151: } else {
152: $answer = 'con_lost'; # Failed connection.
153: }
1.1 albertel 154: return $answer;
155: }
156:
157: sub reply {
158: my ($cmd,$server)=@_;
1.205 www 159: unless (defined($hostname{$server})) { return 'no_such_host'; }
1.1 albertel 160: my $answer=subreply($cmd,$server);
1.65 www 161: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.12 www 162: &logthis("<font color=blue>WARNING:".
163: " $cmd to $server returned $answer</font>");
164: }
1.1 albertel 165: return $answer;
166: }
167:
168: # ----------------------------------------------------------- Send USR1 to lonc
169:
170: sub reconlonc {
171: my $peerfile=shift;
172: &logthis("Trying to reconnect for $peerfile");
173: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
1.448 albertel 174: if (open(my $fh,"<$loncfile")) {
1.1 albertel 175: my $loncpid=<$fh>;
176: chomp($loncpid);
177: if (kill 0 => $loncpid) {
178: &logthis("lonc at pid $loncpid responding, sending USR1");
179: kill USR1 => $loncpid;
180: sleep 1;
181: if (-e "$peerfile") { return; }
182: &logthis("$peerfile still not there, give it another try");
183: sleep 5;
184: if (-e "$peerfile") { return; }
1.12 www 185: &logthis(
186: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 187: } else {
1.12 www 188: &logthis(
189: "<font color=blue>WARNING:".
190: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 191: }
192: } else {
1.12 www 193: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 194: }
195: }
196:
197: # ------------------------------------------------------ Critical communication
1.12 www 198:
1.1 albertel 199: sub critical {
200: my ($cmd,$server)=@_;
1.89 www 201: unless ($hostname{$server}) {
202: &logthis("<font color=blue>WARNING:".
203: " Critical message to unknown server ($server)</font>");
204: return 'no_such_host';
205: }
1.1 albertel 206: my $answer=reply($cmd,$server);
207: if ($answer eq 'con_lost') {
208: &reconlonc("$perlvar{'lonSockDir'}/$server");
1.589 albertel 209: my $answer=reply($cmd,$server);
1.1 albertel 210: if ($answer eq 'con_lost') {
211: my $now=time;
212: my $middlename=$cmd;
1.5 www 213: $middlename=substr($middlename,0,16);
1.1 albertel 214: $middlename=~s/\W//g;
215: my $dfilename=
1.305 www 216: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
217: $dumpcount++;
1.1 albertel 218: {
1.448 albertel 219: my $dfh;
220: if (open($dfh,">$dfilename")) {
221: print $dfh "$cmd\n";
222: close($dfh);
223: }
1.1 albertel 224: }
225: sleep 2;
226: my $wcmd='';
227: {
1.448 albertel 228: my $dfh;
229: if (open($dfh,"<$dfilename")) {
230: $wcmd=<$dfh>;
231: close($dfh);
232: }
1.1 albertel 233: }
234: chomp($wcmd);
1.7 www 235: if ($wcmd eq $cmd) {
1.12 www 236: &logthis("<font color=blue>WARNING: ".
237: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 238: &logperm("D:$server:$cmd");
239: return 'con_delayed';
240: } else {
1.12 www 241: &logthis("<font color=red>CRITICAL:"
242: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 243: &logperm("F:$server:$cmd");
244: return 'con_failed';
245: }
246: }
247: }
248: return $answer;
1.405 albertel 249: }
250:
1.412 www 251: #
1.405 albertel 252: # -------------- Remove all key from the env that start witha lowercase letter
1.412 www 253: # (Which is always a lon-capa value)
254:
1.405 albertel 255: sub cleanenv {
1.412 www 256: # unless (defined(&Apache::exists_config_define("MODPERL2"))) { return; }
257: # unless (&Apache::exists_config_define("MODPERL2")) { return; }
1.405 albertel 258: foreach my $key (keys(%ENV)) {
259: if ($key =~ /^[a-z]/) {
260: delete($ENV{$key});
261: }
262: }
1.374 www 263: }
264:
265: # ------------------------------------------- Transfer profile into environment
266:
267: sub transfer_profile_to_env {
268: my ($lonidsdir,$handle)=@_;
269: my @profile;
270: {
1.448 albertel 271: open(my $idf,"$lonidsdir/$handle.id");
1.374 www 272: flock($idf,LOCK_SH);
273: @profile=<$idf>;
1.448 albertel 274: close($idf);
1.374 www 275: }
276: my $envi;
1.433 matthew 277: my %Remove;
1.374 www 278: for ($envi=0;$envi<=$#profile;$envi++) {
279: chomp($profile[$envi]);
280: my ($envname,$envvalue)=split(/=/,$profile[$envi]);
281: $ENV{$envname} = $envvalue;
1.433 matthew 282: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
283: if ($time < time-300) {
284: $Remove{$key}++;
285: }
286: }
287: }
1.446 albertel 288: $ENV{'user.environment'} = "$lonidsdir/$handle.id";
1.433 matthew 289: foreach my $expired_key (keys(%Remove)) {
290: &delenv($expired_key);
1.374 www 291: }
1.1 albertel 292: }
293:
1.5 www 294: # ---------------------------------------------------------- Append Environment
295:
296: sub appenv {
1.6 www 297: my %newenv=@_;
1.191 harris41 298: foreach (keys %newenv) {
1.35 www 299: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
300: &logthis("<font color=blue>WARNING: ".
1.151 www 301: "Attempt to modify environment ".$_." to ".$newenv{$_}
302: .'</font>');
1.35 www 303: delete($newenv{$_});
304: } else {
305: $ENV{$_}=$newenv{$_};
306: }
1.191 harris41 307: }
1.95 www 308:
309: my $lockfh;
1.448 albertel 310: unless (open($lockfh,"$ENV{'user.environment'}")) {
311: return 'error: '.$!;
1.95 www 312: }
313: unless (flock($lockfh,LOCK_EX)) {
314: &logthis("<font color=blue>WARNING: ".
315: 'Could not obtain exclusive lock in appenv: '.$!);
1.448 albertel 316: close($lockfh);
1.95 www 317: return 'error: '.$!;
318: }
319:
1.6 www 320: my @oldenv;
321: {
1.448 albertel 322: my $fh;
323: unless (open($fh,"$ENV{'user.environment'}")) {
324: return 'error: '.$!;
325: }
326: @oldenv=<$fh>;
327: close($fh);
1.6 www 328: }
329: for (my $i=0; $i<=$#oldenv; $i++) {
330: chomp($oldenv[$i]);
1.9 www 331: if ($oldenv[$i] ne '') {
1.448 albertel 332: my ($name,$value)=split(/=/,$oldenv[$i]);
333: unless (defined($newenv{$name})) {
334: $newenv{$name}=$value;
335: }
1.9 www 336: }
1.6 www 337: }
338: {
1.448 albertel 339: my $fh;
340: unless (open($fh,">$ENV{'user.environment'}")) {
341: return 'error';
342: }
343: my $newname;
344: foreach $newname (keys %newenv) {
345: print $fh "$newname=$newenv{$newname}\n";
346: }
347: close($fh);
1.56 www 348: }
1.448 albertel 349:
350: close($lockfh);
1.56 www 351: return 'ok';
352: }
353: # ----------------------------------------------------- Delete from Environment
354:
355: sub delenv {
356: my $delthis=shift;
357: my %newenv=();
358: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
359: &logthis("<font color=blue>WARNING: ".
360: "Attempt to delete from environment ".$delthis);
361: return 'error';
362: }
363: my @oldenv;
364: {
1.448 albertel 365: my $fh;
366: unless (open($fh,"$ENV{'user.environment'}")) {
367: return 'error';
368: }
369: unless (flock($fh,LOCK_SH)) {
370: &logthis("<font color=blue>WARNING: ".
371: 'Could not obtain shared lock in delenv: '.$!);
372: close($fh);
373: return 'error: '.$!;
374: }
375: @oldenv=<$fh>;
376: close($fh);
1.56 www 377: }
378: {
1.448 albertel 379: my $fh;
380: unless (open($fh,">$ENV{'user.environment'}")) {
381: return 'error';
382: }
383: unless (flock($fh,LOCK_EX)) {
384: &logthis("<font color=blue>WARNING: ".
385: 'Could not obtain exclusive lock in delenv: '.$!);
386: close($fh);
387: return 'error: '.$!;
388: }
389: foreach (@oldenv) {
1.473 matthew 390: if ($_=~/^$delthis/) {
391: my ($key,undef) = split('=',$_);
392: delete($ENV{$key});
393: } else {
394: print $fh $_;
395: }
1.448 albertel 396: }
397: close($fh);
1.5 www 398: }
399: return 'ok';
1.369 albertel 400: }
401:
402: # ------------------------------------------ Find out current server userload
403: # there is a copy in lond
404: sub userload {
405: my $numusers=0;
406: {
407: opendir(LONIDS,$perlvar{'lonIDsDir'});
408: my $filename;
409: my $curtime=time;
410: while ($filename=readdir(LONIDS)) {
411: if ($filename eq '.' || $filename eq '..') {next;}
1.404 albertel 412: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
1.437 albertel 413: if ($curtime-$mtime < 1800) { $numusers++; }
1.369 albertel 414: }
415: closedir(LONIDS);
416: }
417: my $userloadpercent=0;
418: my $maxuserload=$perlvar{'lonUserLoadLim'};
419: if ($maxuserload) {
1.371 albertel 420: $userloadpercent=100*$numusers/$maxuserload;
1.369 albertel 421: }
1.372 albertel 422: $userloadpercent=sprintf("%.2f",$userloadpercent);
1.369 albertel 423: return $userloadpercent;
1.283 www 424: }
425:
426: # ------------------------------------------ Fight off request when overloaded
427:
428: sub overloaderror {
429: my ($r,$checkserver)=@_;
430: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
431: my $loadavg;
432: if ($checkserver eq $perlvar{'lonHostID'}) {
1.448 albertel 433: open(my $loadfile,'/proc/loadavg');
1.283 www 434: $loadavg=<$loadfile>;
435: $loadavg =~ s/\s.*//g;
1.285 matthew 436: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
1.448 albertel 437: close($loadfile);
1.283 www 438: } else {
439: $loadavg=&reply('load',$checkserver);
440: }
1.285 matthew 441: my $overload=$loadavg-100;
1.283 www 442: if ($overload>0) {
1.285 matthew 443: $r->err_headers_out->{'Retry-After'}=$overload;
1.283 www 444: $r->log_error('Overload of '.$overload.' on '.$checkserver);
1.554 www 445: return 413;
1.283 www 446: }
447: return '';
1.5 www 448: }
1.1 albertel 449:
450: # ------------------------------ Find server with least workload from spare.tab
1.11 www 451:
1.1 albertel 452: sub spareserver {
1.370 albertel 453: my ($loadpercent,$userloadpercent) = @_;
1.1 albertel 454: my $tryserver;
455: my $spareserver='';
1.370 albertel 456: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
457: my $lowestserver=$loadpercent > $userloadpercent?
458: $loadpercent : $userloadpercent;
1.1 albertel 459: foreach $tryserver (keys %spareid) {
1.411 albertel 460: my $loadans=reply('load',$tryserver);
461: my $userloadans=reply('userload',$tryserver);
462: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
463: next; #didn't get a number from the server
464: }
465: my $answer;
466: if ($loadans =~ /\d/) {
467: if ($userloadans =~ /\d/) {
468: #both are numbers, pick the bigger one
469: $answer=$loadans > $userloadans?
470: $loadans : $userloadans;
471: } else {
472: $answer = $loadans;
473: }
474: } else {
475: $answer = $userloadans;
476: }
477: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
478: $spareserver="http://$hostname{$tryserver}";
479: $lowestserver=$answer;
480: }
1.370 albertel 481: }
1.1 albertel 482: return $spareserver;
1.202 matthew 483: }
484:
485: # --------------------------------------------- Try to change a user's password
486:
487: sub changepass {
488: my ($uname,$udom,$currentpass,$newpass,$server)=@_;
489: $currentpass = &escape($currentpass);
490: $newpass = &escape($newpass);
491: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass",
492: $server);
493: if (! $answer) {
494: &logthis("No reply on password change request to $server ".
495: "by $uname in domain $udom.");
496: } elsif ($answer =~ "^ok") {
497: &logthis("$uname in $udom successfully changed their password ".
498: "on $server.");
499: } elsif ($answer =~ "^pwchange_failure") {
500: &logthis("$uname in $udom was unable to change their password ".
501: "on $server. The action was blocked by either lcpasswd ".
502: "or pwchange");
503: } elsif ($answer =~ "^non_authorized") {
504: &logthis("$uname in $udom did not get their password correct when ".
505: "attempting to change it on $server.");
506: } elsif ($answer =~ "^auth_mode_error") {
507: &logthis("$uname in $udom attempted to change their password despite ".
508: "not being locally or internally authenticated on $server.");
509: } elsif ($answer =~ "^unknown_user") {
510: &logthis("$uname in $udom attempted to change their password ".
511: "on $server but were unable to because $server is not ".
512: "their home server.");
513: } elsif ($answer =~ "^refused") {
514: &logthis("$server refused to change $uname in $udom password because ".
515: "it was sent an unencrypted request to change the password.");
516: }
517: return $answer;
1.1 albertel 518: }
519:
1.169 harris41 520: # ----------------------- Try to determine user's current authentication scheme
521:
522: sub queryauthenticate {
523: my ($uname,$udom)=@_;
1.456 albertel 524: my $uhome=&homeserver($uname,$udom);
525: if (!$uhome) {
526: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
527: return 'no_host';
528: }
529: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
530: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
531: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.169 harris41 532: }
1.456 albertel 533: return $answer;
1.169 harris41 534: }
535:
1.1 albertel 536: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 537:
1.1 albertel 538: sub authenticate {
539: my ($uname,$upass,$udom)=@_;
1.12 www 540: $upass=escape($upass);
1.199 www 541: $uname=~s/\W//g;
1.471 albertel 542: my $uhome=&homeserver($uname,$udom);
543: if (!$uhome) {
544: &logthis("User $uname at $udom is unknown in authenticate");
545: return 'no_host';
1.1 albertel 546: }
1.471 albertel 547: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
548: if ($answer eq 'authorized') {
549: &logthis("User $uname at $udom authorized by $uhome");
550: return $uhome;
551: }
552: if ($answer eq 'non_authorized') {
553: &logthis("User $uname at $udom rejected by $uhome");
554: return 'no_host';
1.9 www 555: }
1.471 albertel 556: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1.1 albertel 557: return 'no_host';
558: }
559:
560: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 561:
1.599 albertel 562: my %homecache;
1.1 albertel 563: sub homeserver {
1.230 stredwic 564: my ($uname,$udom,$ignoreBadCache)=@_;
1.1 albertel 565: my $index="$uname:$udom";
1.426 albertel 566:
1.599 albertel 567: if (exists($homecache{$index})) { return $homecache{$index}; }
1.1 albertel 568: my $tryserver;
569: foreach $tryserver (keys %libserv) {
1.230 stredwic 570: next if ($ignoreBadCache ne 'true' &&
1.231 stredwic 571: exists($badServerCache{$tryserver}));
1.1 albertel 572: if ($hostdom{$tryserver} eq $udom) {
573: my $answer=reply("home:$udom:$uname",$tryserver);
574: if ($answer eq 'found') {
1.599 albertel 575: return $homecache{$index}=$tryserver;
1.231 stredwic 576: } elsif ($answer eq 'no_host') {
577: $badServerCache{$tryserver}=1;
1.221 matthew 578: }
1.1 albertel 579: }
580: }
581: return 'no_host';
1.70 www 582: }
583:
584: # ------------------------------------- Find the usernames behind a list of IDs
585:
586: sub idget {
587: my ($udom,@ids)=@_;
588: my %returnhash=();
589:
590: my $tryserver;
591: foreach $tryserver (keys %libserv) {
592: if ($hostdom{$tryserver} eq $udom) {
593: my $idlist=join('&',@ids);
594: $idlist=~tr/A-Z/a-z/;
595: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
596: my @answer=();
1.76 www 597: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 598: @answer=split(/\&/,$reply);
599: } ;
600: my $i;
601: for ($i=0;$i<=$#ids;$i++) {
602: if ($answer[$i]) {
603: $returnhash{$ids[$i]}=$answer[$i];
604: }
605: }
606: }
607: }
608: return %returnhash;
609: }
610:
611: # ------------------------------------- Find the IDs behind a list of usernames
612:
613: sub idrget {
614: my ($udom,@unames)=@_;
615: my %returnhash=();
1.191 harris41 616: foreach (@unames) {
1.70 www 617: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
1.191 harris41 618: }
1.70 www 619: return %returnhash;
620: }
621:
622: # ------------------------------- Store away a list of names and associated IDs
623:
624: sub idput {
625: my ($udom,%ids)=@_;
626: my %servers=();
1.191 harris41 627: foreach (keys %ids) {
1.487 albertel 628: &cput('environment',{'id'=>$ids{$_}},$udom,$_);
1.70 www 629: my $uhom=&homeserver($_,$udom);
630: if ($uhom ne 'no_host') {
631: my $id=&escape($ids{$_});
632: $id=~tr/A-Z/a-z/;
633: my $unam=&escape($_);
634: if ($servers{$uhom}) {
635: $servers{$uhom}.='&'.$id.'='.$unam;
636: } else {
637: $servers{$uhom}=$id.'='.$unam;
638: }
639: }
1.191 harris41 640: }
641: foreach (keys %servers) {
1.70 www 642: &critical('idput:'.$udom.':'.$servers{$_},$_);
1.191 harris41 643: }
1.344 www 644: }
645:
646: # --------------------------------------------------- Assign a key to a student
647:
648: sub assign_access_key {
1.364 www 649: #
650: # a valid key looks like uname:udom#comments
651: # comments are being appended
652: #
1.498 www 653: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
654: $kdom=
655: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($kdom));
656: $knum=
657: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($knum));
1.344 www 658: $cdom=
659: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
660: $cnum=
661: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
662: $udom=$ENV{'user.name'} unless (defined($udom));
663: $uname=$ENV{'user.domain'} unless (defined($uname));
1.498 www 664: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1.364 www 665: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1.479 albertel 666: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1.364 www 667: # assigned to this person
668: # - this should not happen,
1.345 www 669: # unless something went wrong
670: # the first time around
671: # ready to assign
1.364 www 672: $logentry=$1.'; '.$logentry;
1.496 www 673: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1.498 www 674: $kdom,$knum) eq 'ok') {
1.345 www 675: # key now belongs to user
1.346 www 676: my $envkey='key.'.$cdom.'_'.$cnum;
1.345 www 677: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
678: &appenv('environment.'.$envkey => $ckey);
679: return 'ok';
680: } else {
681: return
682: 'error: Count not permanently assign key, will need to be re-entered later.';
683: }
684: } else {
685: return 'error: Could not assign key, try again later.';
686: }
1.364 www 687: } elsif (!$existing{$ckey}) {
1.345 www 688: # the key does not exist
689: return 'error: The key does not exist';
690: } else {
691: # the key is somebody else's
692: return 'error: The key is already in use';
693: }
1.344 www 694: }
695:
1.364 www 696: # ------------------------------------------ put an additional comment on a key
697:
698: sub comment_access_key {
699: #
700: # a valid key looks like uname:udom#comments
701: # comments are being appended
702: #
703: my ($ckey,$cdom,$cnum,$logentry)=@_;
704: $cdom=
705: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
706: $cnum=
707: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
708: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
709: if ($existing{$ckey}) {
710: $existing{$ckey}.='; '.$logentry;
711: # ready to assign
1.367 www 712: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1.364 www 713: $cdom,$cnum) eq 'ok') {
714: return 'ok';
715: } else {
716: return 'error: Count not store comment.';
717: }
718: } else {
719: # the key does not exist
720: return 'error: The key does not exist';
721: }
722: }
723:
1.344 www 724: # ------------------------------------------------------ Generate a set of keys
725:
726: sub generate_access_keys {
1.364 www 727: my ($number,$cdom,$cnum,$logentry)=@_;
1.344 www 728: $cdom=
729: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
730: $cnum=
731: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
1.361 www 732: unless (&allowed('mky',$cdom)) { return 0; }
1.344 www 733: unless (($cdom) && ($cnum)) { return 0; }
734: if ($number>10000) { return 0; }
735: sleep(2); # make sure don't get same seed twice
736: srand(time()^($$+($$<<15))); # from "Programming Perl"
737: my $total=0;
738: for (my $i=1;$i<=$number;$i++) {
739: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
740: sprintf("%lx",int(100000*rand)).'-'.
741: sprintf("%lx",int(100000*rand));
742: $newkey=~s/1/g/g; # folks mix up 1 and l
743: $newkey=~s/0/h/g; # and also 0 and O
744: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
745: if ($existing{$newkey}) {
746: $i--;
747: } else {
1.364 www 748: if (&put('accesskeys',
749: { $newkey => '# generated '.localtime().
750: ' by '.$ENV{'user.name'}.'@'.$ENV{'user.domain'}.
751: '; '.$logentry },
752: $cdom,$cnum) eq 'ok') {
1.344 www 753: $total++;
754: }
755: }
756: }
757: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
758: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
759: return $total;
760: }
761:
762: # ------------------------------------------------------- Validate an accesskey
763:
764: sub validate_access_key {
765: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
766: $cdom=
767: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'} unless (defined($cdom));
768: $cnum=
769: $ENV{'course.'.$ENV{'request.course.id'}.'.num'} unless (defined($cnum));
1.497 www 770: $udom=$ENV{'user.domain'} unless (defined($udom));
771: $uname=$ENV{'user.name'} unless (defined($uname));
1.345 www 772: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1.479 albertel 773: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1.70 www 774: }
775:
776: # ------------------------------------- Find the section of student in a course
1.298 matthew 777:
778: sub getsection {
779: my ($udom,$unam,$courseid)=@_;
1.599 albertel 780: my $cachetime=1800;
1.298 matthew 781: $courseid=~s/\_/\//g;
782: $courseid=~s/^(\w)/\/$1/;
1.551 albertel 783:
784: my $hashid="$udom:$unam:$courseid";
1.599 albertel 785: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1.551 albertel 786: if (defined($cached)) { return $result; }
787:
1.298 matthew 788: my %Pending;
789: my %Expired;
790: #
791: # Each role can either have not started yet (pending), be active,
792: # or have expired.
793: #
794: # If there is an active role, we are done.
795: #
796: # If there is more than one role which has not started yet,
797: # choose the one which will start sooner
798: # If there is one role which has not started yet, return it.
799: #
800: # If there is more than one expired role, choose the one which ended last.
801: # If there is a role which has expired, return it.
802: #
803: foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
804: &homeserver($unam,$udom)))) {
805: my ($key,$value)=split(/\=/,$_);
806: $key=&unescape($key);
1.479 albertel 807: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1.298 matthew 808: my $section=$1;
809: if ($key eq $courseid.'_st') { $section=''; }
810: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
811: my $now=time;
1.548 albertel 812: if (defined($end) && $end && ($now > $end)) {
1.298 matthew 813: $Expired{$end}=$section;
814: next;
815: }
1.548 albertel 816: if (defined($start) && $start && ($now < $start)) {
1.298 matthew 817: $Pending{$start}=$section;
818: next;
819: }
1.599 albertel 820: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1.298 matthew 821: }
822: #
823: # Presumedly there will be few matching roles from the above
824: # loop and the sorting time will be negligible.
825: if (scalar(keys(%Pending))) {
826: my ($time) = sort {$a <=> $b} keys(%Pending);
1.599 albertel 827: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1.298 matthew 828: }
829: if (scalar(keys(%Expired))) {
830: my @sorted = sort {$a <=> $b} keys(%Expired);
831: my $time = pop(@sorted);
1.599 albertel 832: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1.298 matthew 833: }
1.599 albertel 834: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1.298 matthew 835: }
1.70 www 836:
1.599 albertel 837: sub save_cache {
838: &purge_remembered();
839: }
1.452 albertel 840:
1.599 albertel 841: my $to_remember=-1;
842: my %remembered;
843: my %accessed;
844: my $kicks=0;
845: my $hits=0;
846: sub devalidate_cache_new {
847: my ($name,$id,$debug) = @_;
848: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
849: $id=&escape($name.':'.$id);
850: $memcache->delete($id);
851: delete($remembered{$id});
852: delete($accessed{$id});
853: }
854:
855: sub is_cached_new {
856: my ($name,$id,$debug) = @_;
857: $id=&escape($name.':'.$id);
858: if (exists($remembered{$id})) {
859: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
860: $accessed{$id}=[&gettimeofday()];
861: $hits++;
862: return ($remembered{$id},1);
863: }
864: my $value = $memcache->get($id);
865: if (!(defined($value))) {
866: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1.417 albertel 867: return (undef,undef);
1.416 albertel 868: }
1.599 albertel 869: if ($value eq '__undef__') {
870: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
871: $value=undef;
872: }
873: &make_room($id,$value,$debug);
874: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
875: return ($value,1);
876: }
877:
878: sub do_cache_new {
879: my ($name,$id,$value,$time,$debug) = @_;
880: $id=&escape($name.':'.$id);
881: my $setvalue=$value;
882: if (!defined($setvalue)) {
883: $setvalue='__undef__';
884: }
885: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1.600 albertel 886: $memcache->set($id,$setvalue,$time);
887: # need to make a copy of $value
888: #&make_room($id,$value,$debug);
1.599 albertel 889: return $value;
890: }
891:
892: sub make_room {
893: my ($id,$value,$debug)=@_;
894: $remembered{$id}=$value;
895: if ($to_remember<0) { return; }
896: $accessed{$id}=[&gettimeofday()];
897: if (scalar(keys(%remembered)) <= $to_remember) { return; }
898: my $to_kick;
899: my $max_time=0;
900: foreach my $other (keys(%accessed)) {
901: if (&tv_interval($accessed{$other}) > $max_time) {
902: $to_kick=$other;
903: $max_time=&tv_interval($accessed{$other});
904: }
905: }
906: delete($remembered{$to_kick});
907: delete($accessed{$to_kick});
908: $kicks++;
909: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1.541 albertel 910: return;
911: }
912:
1.599 albertel 913: sub purge_remembered {
1.604 albertel 914: #&logthis("Tossing ".scalar(keys(%remembered)));
915: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1.599 albertel 916: undef(%remembered);
917: undef(%accessed);
1.428 albertel 918: }
1.70 www 919: # ------------------------------------- Read an entry from a user's environment
920:
921: sub userenvironment {
922: my ($udom,$unam,@what)=@_;
923: my %returnhash=();
924: my @answer=split(/\&/,
925: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
926: &homeserver($unam,$udom)));
927: my $i;
928: for ($i=0;$i<=$#what;$i++) {
929: $returnhash{$what[$i]}=&unescape($answer[$i]);
930: }
931: return %returnhash;
1.1 albertel 932: }
933:
1.617 ! albertel 934: # ---------------------------------------------------------- Get a studentphoto
! 935: sub studentphoto {
! 936: my ($udom,$unam,$ext) = @_;
! 937: my $home=&Apache::lonnet::homeserver($unam,$udom);
! 938: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext",$home);
! 939: my $url="/uploaded/$udom/$unam/internal/studentphoto.".$ext;
! 940: if ($ret ne 'ok') {
! 941: return '/adm/lonKaputt/lonlogo_broken.gif';
! 942: }
! 943: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
! 944: return $tokenurl;
! 945: }
! 946:
1.263 www 947: # -------------------------------------------------------------------- New chat
948:
949: sub chatsend {
950: my ($newentry,$anon)=@_;
951: my $cnum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
952: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
953: my $chome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
954: &reply('chatsend:'.$cdom.':'.$cnum.':'.
955: &escape($ENV{'user.domain'}.':'.$ENV{'user.name'}.':'.$anon.':'.
956: &escape($newentry)),$chome);
1.292 www 957: }
958:
959: # ------------------------------------------ Find current version of a resource
960:
961: sub getversion {
962: my $fname=&clutter(shift);
963: unless ($fname=~/^\/res\//) { return -1; }
964: return ¤tversion(&filelocation('',$fname));
965: }
966:
967: sub currentversion {
968: my $fname=shift;
1.599 albertel 969: my ($result,$cached)=&is_cached_new('resversion',$fname);
1.440 www 970: if (defined($cached)) { return $result; }
1.292 www 971: my $author=$fname;
972: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
973: my ($udom,$uname)=split(/\//,$author);
974: my $home=homeserver($uname,$udom);
975: if ($home eq 'no_host') {
976: return -1;
977: }
978: my $answer=reply("currentversion:$fname",$home);
979: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
980: return -1;
981: }
1.599 albertel 982: return &do_cache_new('resversion',$fname,$answer,600);
1.263 www 983: }
984:
1.1 albertel 985: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 986:
1.1 albertel 987: sub subscribe {
988: my $fname=shift;
1.312 www 989: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1.532 albertel 990: $fname=~s/[\n\r]//g;
1.1 albertel 991: my $author=$fname;
992: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
993: my ($udom,$uname)=split(/\//,$author);
994: my $home=homeserver($uname,$udom);
1.335 albertel 995: if ($home eq 'no_host') {
996: return 'not_found';
1.1 albertel 997: }
998: my $answer=reply("sub:$fname",$home);
1.64 www 999: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1000: $answer.=' by '.$home;
1001: }
1.1 albertel 1002: return $answer;
1003: }
1004:
1.8 www 1005: # -------------------------------------------------------------- Replicate file
1006:
1007: sub repcopy {
1008: my $filename=shift;
1.23 www 1009: $filename=~s/\/+/\//g;
1.607 raeburn 1010: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1011: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1.538 albertel 1012: if ($filename=~m|^/home/httpd/html/userfiles/| or
1.609 banghart 1013: $filename=~m -^/*(uploaded|editupload)/-) {
1.538 albertel 1014: return &repcopy_userfile($filename);
1015: }
1.532 albertel 1016: $filename=~s/[\n\r]//g;
1.8 www 1017: my $transname="$filename.in.transfer";
1.607 raeburn 1018: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1.8 www 1019: my $remoteurl=subscribe($filename);
1.64 www 1020: if ($remoteurl =~ /^con_lost by/) {
1021: &logthis("Subscribe returned $remoteurl: $filename");
1.607 raeburn 1022: return 'unavailable';
1.8 www 1023: } elsif ($remoteurl eq 'not_found') {
1.441 albertel 1024: #&logthis("Subscribe returned not_found: $filename");
1.607 raeburn 1025: return 'not_found';
1.64 www 1026: } elsif ($remoteurl =~ /^rejected by/) {
1027: &logthis("Subscribe returned $remoteurl: $filename");
1.607 raeburn 1028: return 'forbidden';
1.20 www 1029: } elsif ($remoteurl eq 'directory') {
1.607 raeburn 1030: return 'ok';
1.8 www 1031: } else {
1.290 www 1032: my $author=$filename;
1033: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1034: my ($udom,$uname)=split(/\//,$author);
1035: my $home=homeserver($uname,$udom);
1036: unless ($home eq $perlvar{'lonHostID'}) {
1.8 www 1037: my @parts=split(/\//,$filename);
1038: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1039: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1040: &logthis("Malconfiguration for replication: $filename");
1.607 raeburn 1041: return 'bad_request';
1.8 www 1042: }
1043: my $count;
1044: for ($count=5;$count<$#parts;$count++) {
1045: $path.="/$parts[$count]";
1046: if ((-e $path)!=1) {
1047: mkdir($path,0777);
1048: }
1049: }
1050: my $ua=new LWP::UserAgent;
1051: my $request=new HTTP::Request('GET',"$remoteurl");
1052: my $response=$ua->request($request,$transname);
1053: if ($response->is_error()) {
1054: unlink($transname);
1055: my $message=$response->status_line;
1.12 www 1056: &logthis("<font color=blue>WARNING:"
1057: ." LWP get: $message: $filename</font>");
1.607 raeburn 1058: return 'unavailable';
1.8 www 1059: } else {
1.16 www 1060: if ($remoteurl!~/\.meta$/) {
1061: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1062: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1063: if ($mresponse->is_error()) {
1064: unlink($filename.'.meta');
1065: &logthis(
1066: "<font color=yellow>INFO: No metadata: $filename</font>");
1067: }
1068: }
1.8 www 1069: rename($transname,$filename);
1.607 raeburn 1070: return 'ok';
1.8 www 1071: }
1.290 www 1072: }
1.8 www 1073: }
1.330 www 1074: }
1075:
1076: # ------------------------------------------------ Get server side include body
1077: sub ssi_body {
1.381 albertel 1078: my ($filelink,%form)=@_;
1.606 matthew 1079: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1080: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1081: }
1.330 www 1082: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1.381 albertel 1083: &ssi($filelink,%form));
1.565 albertel 1084: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+// END LON-CAPA Internal\s*(-->)?\s||gs;
1.451 albertel 1085: $output=~s/^.*?\<body[^\>]*\>//si;
1086: $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
1.330 www 1087: return $output;
1.8 www 1088: }
1089:
1.15 www 1090: # --------------------------------------------------------- Server Side Include
1091:
1092: sub ssi {
1093:
1.23 www 1094: my ($fn,%form)=@_;
1.15 www 1095:
1096: my $ua=new LWP::UserAgent;
1.23 www 1097:
1098: my $request;
1099:
1100: if (%form) {
1101: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
1.201 albertel 1102: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1.23 www 1103: } else {
1104: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
1105: }
1106:
1.15 www 1107: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1108: my $response=$ua->request($request);
1109:
1.324 www 1110: return $response->content;
1111: }
1112:
1113: sub externalssi {
1114: my ($url)=@_;
1115: my $ua=new LWP::UserAgent;
1116: my $request=new HTTP::Request('GET',$url);
1117: my $response=$ua->request($request);
1.15 www 1118: return $response->content;
1119: }
1.254 www 1120:
1.492 albertel 1121: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1122:
1123: sub allowuploaded {
1124: my ($srcurl,$url)=@_;
1125: $url=&clutter(&declutter($url));
1126: my $dir=$url;
1127: $dir=~s/\/[^\/]+$//;
1128: my %httpref=();
1129: my $httpurl=&hreflocation('',$url);
1130: $httpref{'httpref.'.$httpurl}=$srcurl;
1131: &Apache::lonnet::appenv(%httpref);
1.254 www 1132: }
1.477 raeburn 1133:
1.478 albertel 1134: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1135: # input: action, courseID, current domain, home server for course, intended
1136: # path to file, source of file.
1.485 raeburn 1137: # output: url to file (if action was uploaddoc),
1138: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1.477 raeburn 1139: #
1.478 albertel 1140: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1141: # course.
1.477 raeburn 1142: #
1.478 albertel 1143: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1144: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1145: # course's home server.
1.477 raeburn 1146: #
1.478 albertel 1147: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1148: # be copied from $source (current location) to
1149: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1150: # and will then be copied to
1151: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1152: # course's home server.
1.485 raeburn 1153: #
1.481 raeburn 1154: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1.485 raeburn 1155: # will be retrived from $ENV{form.uploaddoc} (from DOCS interface) to
1.481 raeburn 1156: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1157: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1158: # in course's home server.
1159:
1.477 raeburn 1160:
1161: sub process_coursefile {
1162: my ($action,$docuname,$docudom,$docuhome,$file,$source)=@_;
1163: my $fetchresult;
1164: if ($action eq 'propagate') {
1165: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file
1166: ,$docuhome);
1.481 raeburn 1167: } else {
1.477 raeburn 1168: my $fetchresult = '';
1169: my $fpath = '';
1170: my $fname = $file;
1.478 albertel 1171: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1.477 raeburn 1172: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1173: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1174: unless ($fpath eq '') {
1.478 albertel 1175: my @parts=split('/',$fpath);
1.477 raeburn 1176: foreach my $part (@parts) {
1177: $filepath.= '/'.$part;
1178: if ((-e $filepath)!=1) {
1179: mkdir($filepath,0777);
1180: }
1181: }
1182: }
1.481 raeburn 1183: if ($action eq 'copy') {
1184: if ($source eq '') {
1185: $fetchresult = 'no source file';
1186: return $fetchresult;
1187: } else {
1188: my $destination = $filepath.'/'.$fname;
1189: rename($source,$destination);
1190: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1191: $docuhome);
1192: }
1193: } elsif ($action eq 'uploaddoc') {
1194: open(my $fh,'>'.$filepath.'/'.$fname);
1195: print $fh $ENV{'form.'.$source};
1196: close($fh);
1.477 raeburn 1197: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1198: $docuhome);
1.481 raeburn 1199: if ($fetchresult eq 'ok') {
1200: return '/uploaded/'.$fpath.'/'.$fname;
1201: } else {
1202: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1203: ' to host '.$docuhome.': '.$fetchresult);
1204: return '/adm/notfound.html';
1205: }
1.477 raeburn 1206: }
1207: }
1.485 raeburn 1208: unless ( $fetchresult eq 'ok') {
1.477 raeburn 1209: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1210: ' to host '.$docuhome.': '.$fetchresult);
1211: }
1212: return $fetchresult;
1213: }
1214:
1.531 albertel 1215: sub clean_filename {
1216: my ($fname)=@_;
1.315 www 1217: # Replace Windows backslashes by forward slashes
1.257 www 1218: $fname=~s/\\/\//g;
1.315 www 1219: # Get rid of everything but the actual filename
1.257 www 1220: $fname=~s/^.*\/([^\/]+)$/$1/;
1.315 www 1221: # Replace spaces by underscores
1222: $fname=~s/\s+/\_/g;
1223: # Replace all other weird characters by nothing
1.317 www 1224: $fname=~s/[^\w\.\-]//g;
1.540 albertel 1225: # Replace all .\d. sequences with _\d. so they no longer look like version
1226: # numbers
1227: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1.531 albertel 1228: return $fname;
1229: }
1230:
1.608 albertel 1231: # --------------- Take an uploaded file and put it into the userfiles directory
1232: # input: name of form element, coursedoc=1 means this is for the course
1233: # output: url of file in userspace
1234:
1235:
1.531 albertel 1236: sub userfileupload {
1237: my ($formname,$coursedoc,$subdir)=@_;
1238: if (!defined($subdir)) { $subdir='unknown'; }
1239: my $fname=$ENV{'form.'.$formname.'.filename'};
1240: $fname=&clean_filename($fname);
1.315 www 1241: # See if there is anything left
1.257 www 1242: unless ($fname) { return 'error: no uploaded file'; }
1.477 raeburn 1243: chop($ENV{'form.'.$formname});
1.523 raeburn 1244: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1245: my $now = time;
1246: my $filepath = 'tmp/helprequests/'.$now;
1247: my @parts=split(/\//,$filepath);
1248: my $fullpath = $perlvar{'lonDaemons'};
1249: for (my $i=0;$i<@parts;$i++) {
1250: $fullpath .= '/'.$parts[$i];
1251: if ((-e $fullpath)!=1) {
1252: mkdir($fullpath,0777);
1253: }
1254: }
1255: open(my $fh,'>'.$fullpath.'/'.$fname);
1256: print $fh $ENV{'form.'.$formname};
1257: close($fh);
1258: return $fullpath.'/'.$fname;
1259: }
1.258 www 1260: # Create the directory if not present
1.259 www 1261: my $docuname='';
1262: my $docudom='';
1263: my $docuhome='';
1.493 albertel 1264: $fname="$subdir/$fname";
1.259 www 1265: if ($coursedoc) {
1266: $docuname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1267: $docudom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1268: $docuhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.481 raeburn 1269: if ($ENV{'form.folder'} =~ m/^default/) {
1.485 raeburn 1270: return &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname);
1.481 raeburn 1271: } else {
1272: $fname=$ENV{'form.folder'}.'/'.$fname;
1.485 raeburn 1273: return &process_coursefile('uploaddoc',$docuname,$docudom,$docuhome,$fname,$formname);
1.481 raeburn 1274: }
1.259 www 1275: } else {
1276: $docuname=$ENV{'user.name'};
1277: $docudom=$ENV{'user.domain'};
1278: $docuhome=$ENV{'user.home'};
1.485 raeburn 1279: return &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname);
1.259 www 1280: }
1.271 www 1281: }
1282:
1283: sub finishuserfileupload {
1.477 raeburn 1284: my ($docuname,$docudom,$docuhome,$formname,$fname)=@_;
1285: my $path=$docudom.'/'.$docuname.'/';
1.258 www 1286: my $filepath=$perlvar{'lonDocRoot'};
1.494 albertel 1287: my ($fnamepath,$file);
1288: $file=$fname;
1289: if ($fname=~m|/|) {
1290: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1291: $path.=$fnamepath.'/';
1292: }
1.259 www 1293: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
1.258 www 1294: my $count;
1295: for ($count=4;$count<=$#parts;$count++) {
1296: $filepath.="/$parts[$count]";
1297: if ((-e $filepath)!=1) {
1298: mkdir($filepath,0777);
1299: }
1300: }
1301: # Save the file
1302: {
1.570 albertel 1303: open(FH,'>'.$filepath.'/'.$file);
1304: print FH $ENV{'form.'.$formname};
1305: close(FH);
1.258 www 1306: }
1.259 www 1307: # Notify homeserver to grep it
1308: #
1.494 albertel 1309: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
1.295 www 1310: if ($fetchresult eq 'ok') {
1.259 www 1311: #
1.258 www 1312: # Return the URL to it
1.494 albertel 1313: return '/uploaded/'.$path.$file;
1.263 www 1314: } else {
1.494 albertel 1315: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
1316: ': '.$fetchresult);
1.263 www 1317: return '/adm/notfound.html';
1318: }
1.493 albertel 1319: }
1320:
1321: sub removeuploadedurl {
1322: my ($url)=@_;
1323: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
1.613 albertel 1324: return &removeuserfile($uname,$udom,$fname);
1.490 albertel 1325: }
1326:
1327: sub removeuserfile {
1328: my ($docuname,$docudom,$fname)=@_;
1329: my $home=&homeserver($docuname,$docudom);
1330: return &reply("removeuserfile:$docudom/$docuname/$fname",$home);
1.257 www 1331: }
1.15 www 1332:
1.530 albertel 1333: sub mkdiruserfile {
1334: my ($docuname,$docudom,$dir)=@_;
1335: my $home=&homeserver($docuname,$docudom);
1336: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
1337: }
1338:
1.531 albertel 1339: sub renameuserfile {
1340: my ($docuname,$docudom,$old,$new)=@_;
1341: my $home=&homeserver($docuname,$docudom);
1342: return &reply("renameuserfile:$docudom:$docuname:".&escape("$old").':'.
1343: &escape("$new"),$home);
1344: }
1345:
1.14 www 1346: # ------------------------------------------------------------------------- Log
1347:
1348: sub log {
1349: my ($dom,$nam,$hom,$what)=@_;
1.47 www 1350: return critical("log:$dom:$nam:$what",$hom);
1.157 www 1351: }
1352:
1353: # ------------------------------------------------------------------ Course Log
1.352 www 1354: #
1355: # This routine flushes several buffers of non-mission-critical nature
1356: #
1.157 www 1357:
1358: sub flushcourselogs {
1.352 www 1359: &logthis('Flushing log buffers');
1360: #
1361: # course logs
1362: # This is a log of all transactions in a course, which can be used
1363: # for data mining purposes
1364: #
1365: # It also collects the courseid database, which lists last transaction
1366: # times and course titles for all courseids
1367: #
1368: my %courseidbuffer=();
1.191 harris41 1369: foreach (keys %courselogs) {
1.157 www 1370: my $crsid=$_;
1.352 www 1371: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
1.188 www 1372: &escape($courselogs{$crsid}),
1373: $coursehombuf{$crsid}) eq 'ok') {
1.157 www 1374: delete $courselogs{$crsid};
1375: } else {
1376: &logthis('Failed to flush log buffer for '.$crsid);
1377: if (length($courselogs{$crsid})>40000) {
1378: &logthis("<font color=blue>WARNING: Buffer for ".$crsid.
1379: " exceeded maximum size, deleting.</font>");
1380: delete $courselogs{$crsid};
1381: }
1.352 www 1382: }
1383: if ($courseidbuffer{$coursehombuf{$crsid}}) {
1384: $courseidbuffer{$coursehombuf{$crsid}}.='&'.
1.516 raeburn 1385: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1.571 raeburn 1386: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid});
1.352 www 1387: } else {
1388: $courseidbuffer{$coursehombuf{$crsid}}=
1.516 raeburn 1389: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1.571 raeburn 1390: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid});
1391: }
1.191 harris41 1392: }
1.352 www 1393: #
1394: # Write course id database (reverse lookup) to homeserver of courses
1395: # Is used in pickcourse
1396: #
1397: foreach (keys %courseidbuffer) {
1.353 www 1398: &courseidput($hostdom{$_},$courseidbuffer{$_},$_);
1.352 www 1399: }
1400: #
1401: # File accesses
1402: # Writes to the dynamic metadata of resources to get hit counts, etc.
1403: #
1.449 matthew 1404: foreach my $entry (keys(%accesshash)) {
1.458 matthew 1405: if ($entry =~ /___count$/) {
1406: my ($dom,$name);
1407: ($dom,$name,undef)=($entry=~m:___(\w+)/(\w+)/(.*)___count$:);
1408: if (! defined($dom) || $dom eq '' ||
1409: ! defined($name) || $name eq '') {
1410: my $cid = $ENV{'request.course.id'};
1411: $dom = $ENV{'request.'.$cid.'.domain'};
1412: $name = $ENV{'request.'.$cid.'.num'};
1413: }
1.450 matthew 1414: my $value = $accesshash{$entry};
1415: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
1416: my %temphash=($url => $value);
1.449 matthew 1417: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
1418: if ($result eq 'ok') {
1419: delete $accesshash{$entry};
1420: } elsif ($result eq 'unknown_cmd') {
1421: # Target server has old code running on it.
1.450 matthew 1422: my %temphash=($entry => $value);
1.449 matthew 1423: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1424: delete $accesshash{$entry};
1425: }
1426: }
1427: } else {
1.458 matthew 1428: my ($dom,$name) = ($entry=~m:___(\w+)/(\w+)/(.*)___(\w+)$:);
1.450 matthew 1429: my %temphash=($entry => $accesshash{$entry});
1.449 matthew 1430: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1431: delete $accesshash{$entry};
1432: }
1.185 www 1433: }
1.191 harris41 1434: }
1.352 www 1435: #
1436: # Roles
1437: # Reverse lookup of user roles for course faculty/staff and co-authorship
1438: #
1.349 www 1439: foreach (keys %userrolehash) {
1440: my $entry=$_;
1.351 www 1441: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
1.349 www 1442: split(/\:/,$entry);
1443: if (&Apache::lonnet::put('nohist_userroles',
1.351 www 1444: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
1.349 www 1445: $rudom,$runame) eq 'ok') {
1446: delete $userrolehash{$entry};
1447: }
1448: }
1.186 www 1449: $dumpcount++;
1.157 www 1450: }
1451:
1452: sub courselog {
1453: my $what=shift;
1.158 www 1454: $what=time.':'.$what;
1.157 www 1455: unless ($ENV{'request.course.id'}) { return ''; }
1.188 www 1456: $coursedombuf{$ENV{'request.course.id'}}=
1.352 www 1457: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1458: $coursenumbuf{$ENV{'request.course.id'}}=
1.188 www 1459: $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1460: $coursehombuf{$ENV{'request.course.id'}}=
1461: $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.352 www 1462: $coursedescrbuf{$ENV{'request.course.id'}}=
1463: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.516 raeburn 1464: $courseinstcodebuf{$ENV{'request.course.id'}}=
1465: $ENV{'course.'.$ENV{'request.course.id'}.'.internal.coursecode'};
1.571 raeburn 1466: $courseownerbuf{$ENV{'request.course.id'}}=
1467: $ENV{'course.'.$ENV{'request.course.id'}.'.internal.courseowner'};
1.157 www 1468: if (defined $courselogs{$ENV{'request.course.id'}}) {
1469: $courselogs{$ENV{'request.course.id'}}.='&'.$what;
1470: } else {
1471: $courselogs{$ENV{'request.course.id'}}.=$what;
1472: }
1.458 matthew 1473: if (length($courselogs{$ENV{'request.course.id'}})>4048) {
1.157 www 1474: &flushcourselogs();
1475: }
1.158 www 1476: }
1477:
1478: sub courseacclog {
1479: my $fnsymb=shift;
1480: unless ($ENV{'request.course.id'}) { return ''; }
1481: my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.408 www 1482: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|page)$/) {
1.187 www 1483: $what.=':POST';
1.583 matthew 1484: # FIXME: Probably ought to escape things....
1.191 harris41 1485: foreach (keys %ENV) {
1.158 www 1486: if ($_=~/^form\.(.*)/) {
1487: $what.=':'.$1.'='.$ENV{$_};
1488: }
1.191 harris41 1489: }
1.583 matthew 1490: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
1491: # FIXME: We should not be depending on a form parameter that someone
1492: # editing lonsearchcat.pm might change in the future.
1493: if ($ENV{'form.phase'} eq 'course_search') {
1494: $what.= ':POST';
1495: # FIXME: Probably ought to escape things....
1496: foreach my $element ('courseexp','crsfulltext','crsrelated',
1497: 'crsdiscuss') {
1498: $what.=':'.$element.'='.$ENV{'form.'.$element};
1499: }
1500: }
1.158 www 1501: }
1502: &courselog($what);
1.149 www 1503: }
1504:
1.185 www 1505: sub countacc {
1506: my $url=&declutter(shift);
1.458 matthew 1507: return if (! defined($url) || $url eq '');
1.185 www 1508: unless ($ENV{'request.course.id'}) { return ''; }
1509: $accesshash{$ENV{'request.course.id'}.'___'.$url.'___course'}=1;
1.281 www 1510: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
1.450 matthew 1511: $accesshash{$key}++;
1.185 www 1512: }
1.349 www 1513:
1.361 www 1514: sub linklog {
1515: my ($from,$to)=@_;
1516: $from=&declutter($from);
1517: $to=&declutter($to);
1518: $accesshash{$from.'___'.$to.'___comefrom'}=1;
1519: $accesshash{$to.'___'.$from.'___goto'}=1;
1520: }
1521:
1.349 www 1522: sub userrolelog {
1523: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
1524: if (($trole=~/^ca/) || ($trole=~/^in/) ||
1525: ($trole=~/^cc/) || ($trole=~/^ep/) ||
1.469 www 1526: ($trole=~/^cr/) || ($trole=~/^ta/)) {
1.350 www 1527: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
1528: $userrolehash
1529: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
1.349 www 1530: =$tend.':'.$tstart;
1531: }
1.351 www 1532: }
1533:
1534: sub get_course_adv_roles {
1535: my $cid=shift;
1536: $cid=$ENV{'request.course.id'} unless (defined($cid));
1537: my %coursehash=&coursedescription($cid);
1.470 www 1538: my %nothide=();
1539: foreach (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
1540: $nothide{join(':',split(/[\@\:]/,$_))}=1;
1541: }
1.351 www 1542: my %returnhash=();
1543: my %dumphash=
1544: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
1545: my $now=time;
1546: foreach (keys %dumphash) {
1547: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1548: if (($tstart) && ($tstart<0)) { next; }
1549: if (($tend) && ($tend<$now)) { next; }
1550: if (($tstart) && ($now<$tstart)) { next; }
1551: my ($role,$username,$domain,$section)=split(/\:/,$_);
1.576 albertel 1552: if ($username eq '' || $domain eq '') { next; }
1.470 www 1553: if ((&privileged($username,$domain)) &&
1554: (!$nothide{$username.':'.$domain})) { next; }
1.351 www 1555: my $key=&plaintext($role);
1556: if ($section) { $key.=' (Sec/Grp '.$section.')'; }
1557: if ($returnhash{$key}) {
1558: $returnhash{$key}.=','.$username.':'.$domain;
1559: } else {
1560: $returnhash{$key}=$username.':'.$domain;
1561: }
1.400 www 1562: }
1563: return %returnhash;
1564: }
1565:
1566: sub get_my_roles {
1567: my ($uname,$udom)=@_;
1568: unless (defined($uname)) { $uname=$ENV{'user.name'}; }
1569: unless (defined($udom)) { $udom=$ENV{'user.domain'}; }
1570: my %dumphash=
1571: &dump('nohist_userroles',$udom,$uname);
1572: my %returnhash=();
1573: my $now=time;
1574: foreach (keys %dumphash) {
1575: my ($tend,$tstart)=split(/\:/,$dumphash{$_});
1576: if (($tstart) && ($tstart<0)) { next; }
1577: if (($tend) && ($tend<$now)) { next; }
1578: if (($tstart) && ($now<$tstart)) { next; }
1579: my ($role,$username,$domain,$section)=split(/\:/,$_);
1580: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
1.373 www 1581: }
1582: return %returnhash;
1.399 www 1583: }
1584:
1585: # ----------------------------------------------------- Frontpage Announcements
1586: #
1587: #
1588:
1589: sub postannounce {
1590: my ($server,$text)=@_;
1591: unless (&allowed('psa',$hostdom{$server})) { return 'refused'; }
1592: unless ($text=~/\w/) { $text=''; }
1593: return &reply('setannounce:'.&escape($text),$server);
1594: }
1595:
1596: sub getannounce {
1.448 albertel 1597:
1598: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
1.399 www 1599: my $announcement='';
1600: while (<$fh>) { $announcement .=$_; }
1.448 albertel 1601: close($fh);
1.399 www 1602: if ($announcement=~/\w/) {
1603: return
1604: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
1.518 albertel 1605: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
1.399 www 1606: } else {
1607: return '';
1608: }
1609: } else {
1610: return '';
1611: }
1.351 www 1612: }
1.353 www 1613:
1614: # ---------------------------------------------------------- Course ID routines
1615: # Deal with domain's nohist_courseid.db files
1616: #
1617:
1618: sub courseidput {
1619: my ($domain,$what,$coursehome)=@_;
1620: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
1621: }
1622:
1623: sub courseiddump {
1.571 raeburn 1624: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$hostidflag,$hostidref)=@_;
1.353 www 1625: my %returnhash=();
1.355 www 1626: unless ($domfilter) { $domfilter=''; }
1.353 www 1627: foreach my $tryserver (keys %libserv) {
1.511 raeburn 1628: if ( ($hostidflag == 1 && grep/^$tryserver$/,@{$hostidref}) || (!defined($hostidflag)) ) {
1.506 raeburn 1629: if ((!$domfilter) || ($hostdom{$tryserver} eq $domfilter)) {
1630: foreach (
1631: split(/\&/,&reply('courseiddump:'.$hostdom{$tryserver}.':'.
1.571 raeburn 1632: $sincefilter.':'.&escape($descfilter).':'.
1633: &escape($instcodefilter).':'.&escape($ownerfilter),
1.354 www 1634: $tryserver))) {
1.506 raeburn 1635: my ($key,$value)=split(/\=/,$_);
1636: if (($key) && ($value)) {
1.516 raeburn 1637: $returnhash{&unescape($key)}=$value;
1.506 raeburn 1638: }
1.353 www 1639: }
1640: }
1641: }
1642: }
1643: return %returnhash;
1644: }
1645:
1646: #
1.149 www 1647: # ----------------------------------------------------------- Check out an item
1648:
1.504 albertel 1649: sub get_first_access {
1650: my ($type,$argsymb)=@_;
1651: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1652: if ($argsymb) { $symb=$argsymb; }
1653: my ($map,$id,$res)=&decode_symb($symb);
1.588 albertel 1654: if ($type eq 'map') {
1655: $res=&symbread($map);
1656: } else {
1657: $res=$symb;
1658: }
1659: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
1660: return $times{"$courseid\0$res"};
1.504 albertel 1661: }
1662:
1663: sub set_first_access {
1664: my ($type)=@_;
1665: my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
1666: my ($map,$id,$res)=&decode_symb($symb);
1.588 albertel 1667: if ($type eq 'map') {
1668: $res=&symbread($map);
1669: } else {
1670: $res=$symb;
1671: }
1672: my $firstaccess=&get_first_access($type,$symb);
1.505 albertel 1673: if (!$firstaccess) {
1.588 albertel 1674: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
1.505 albertel 1675: }
1676: return 'already_set';
1.504 albertel 1677: }
1678:
1.149 www 1679: sub checkout {
1680: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1681: my $now=time;
1682: my $lonhost=$perlvar{'lonHostID'};
1683: my $infostr=&escape(
1.234 www 1684: 'CHECKOUTTOKEN&'.
1.149 www 1685: $tuname.'&'.
1686: $tudom.'&'.
1687: $tcrsid.'&'.
1688: $symb.'&'.
1689: $now.'&'.$ENV{'REMOTE_ADDR'});
1690: my $token=&reply('tmpput:'.$infostr,$lonhost);
1.151 www 1691: if ($token=~/^error\:/) {
1692: &logthis("<font color=blue>WARNING: ".
1693: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
1694: "</font>");
1695: return '';
1696: }
1697:
1.149 www 1698: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
1699: $token=~tr/a-z/A-Z/;
1700:
1.153 www 1701: my %infohash=('resource.0.outtoken' => $token,
1702: 'resource.0.checkouttime' => $now,
1703: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
1.149 www 1704:
1705: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1706: return '';
1.151 www 1707: } else {
1708: &logthis("<font color=blue>WARNING: ".
1709: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
1710: "</font>");
1.149 www 1711: }
1712:
1713: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1714: &escape('Checkout '.$infostr.' - '.
1715: $token)) ne 'ok') {
1716: return '';
1.151 www 1717: } else {
1718: &logthis("<font color=blue>WARNING: ".
1719: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
1720: "</font>");
1.149 www 1721: }
1.151 www 1722: return $token;
1.149 www 1723: }
1724:
1725: # ------------------------------------------------------------ Check in an item
1726:
1727: sub checkin {
1728: my $token=shift;
1.150 www 1729: my $now=time;
1730: my ($ta,$tb,$lonhost)=split(/\*/,$token);
1731: $lonhost=~tr/A-Z/a-z/;
1.595 albertel 1732: my $dtoken=$ta.'_'.$hostname{$lonhost}.'_'.$tb;
1.150 www 1733: $dtoken=~s/\W/\_/g;
1.234 www 1734: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
1.150 www 1735: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
1736:
1.154 www 1737: unless (($tuname) && ($tudom)) {
1738: &logthis('Check in '.$token.' ('.$dtoken.') failed');
1739: return '';
1740: }
1741:
1742: unless (&allowed('mgr',$tcrsid)) {
1743: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
1744: $ENV{'user.name'}.' - '.$ENV{'user.domain'});
1745: return '';
1746: }
1747:
1.153 www 1748: my %infohash=('resource.0.intoken' => $token,
1749: 'resource.0.checkintime' => $now,
1750: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
1.150 www 1751:
1752: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
1753: return '';
1754: }
1755:
1756: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
1757: &escape('Checkin - '.$token)) ne 'ok') {
1758: return '';
1759: }
1760:
1761: return ($symb,$tuname,$tudom,$tcrsid);
1.110 www 1762: }
1763:
1764: # --------------------------------------------- Set Expire Date for Spreadsheet
1765:
1766: sub expirespread {
1767: my ($uname,$udom,$stype,$usymb)=@_;
1768: my $cid=$ENV{'request.course.id'};
1769: if ($cid) {
1770: my $now=time;
1771: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
1772: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1773: $ENV{'course.'.$cid.'.num'}.
1774: ':nohist_expirationdates:'.
1775: &escape($key).'='.$now,
1776: $ENV{'course.'.$cid.'.home'})
1777: }
1778: return 'ok';
1.14 www 1779: }
1780:
1.109 www 1781: # ----------------------------------------------------- Devalidate Spreadsheets
1782:
1783: sub devalidate {
1.325 www 1784: my ($symb,$uname,$udom)=@_;
1.109 www 1785: my $cid=$ENV{'request.course.id'};
1786: if ($cid) {
1.391 matthew 1787: # delete the stored spreadsheets for
1788: # - the student level sheet of this user in course's homespace
1789: # - the assessment level sheet for this resource
1790: # for this user in user's homespace
1.553 albertel 1791: # - current conditional state info
1.325 www 1792: my $key=$uname.':'.$udom.':';
1.109 www 1793: my $status=
1.299 matthew 1794: &del('nohist_calculatedsheets',
1.391 matthew 1795: [$key.'studentcalc:'],
1.133 albertel 1796: $ENV{'course.'.$cid.'.domain'},
1797: $ENV{'course.'.$cid.'.num'})
1798: .' '.
1799: &del('nohist_calculatedsheets_'.$cid,
1.391 matthew 1800: [$key.'assesscalc:'.$symb],$udom,$uname);
1.109 www 1801: unless ($status eq 'ok ok') {
1802: &logthis('Could not devalidate spreadsheet '.
1.325 www 1803: $uname.' at '.$udom.' for '.
1.109 www 1804: $symb.': '.$status);
1.133 albertel 1805: }
1.553 albertel 1806: &delenv('user.state.'.$cid);
1.109 www 1807: }
1808: }
1809:
1.265 albertel 1810: sub get_scalar {
1811: my ($string,$end) = @_;
1812: my $value;
1813: if ($$string =~ s/^([^&]*?)($end)/$2/) {
1814: $value = $1;
1815: } elsif ($$string =~ s/^([^&]*?)&//) {
1816: $value = $1;
1817: }
1818: return &unescape($value);
1819: }
1820:
1821: sub array2str {
1822: my (@array) = @_;
1823: my $result=&arrayref2str(\@array);
1824: $result=~s/^__ARRAY_REF__//;
1825: $result=~s/__END_ARRAY_REF__$//;
1826: return $result;
1827: }
1828:
1.204 albertel 1829: sub arrayref2str {
1830: my ($arrayref) = @_;
1.265 albertel 1831: my $result='__ARRAY_REF__';
1.204 albertel 1832: foreach my $elem (@$arrayref) {
1.265 albertel 1833: if(ref($elem) eq 'ARRAY') {
1834: $result.=&arrayref2str($elem).'&';
1835: } elsif(ref($elem) eq 'HASH') {
1836: $result.=&hashref2str($elem).'&';
1837: } elsif(ref($elem)) {
1838: #print("Got a ref of ".(ref($elem))." skipping.");
1.204 albertel 1839: } else {
1840: $result.=&escape($elem).'&';
1841: }
1842: }
1843: $result=~s/\&$//;
1.265 albertel 1844: $result .= '__END_ARRAY_REF__';
1.204 albertel 1845: return $result;
1846: }
1847:
1.168 albertel 1848: sub hash2str {
1.204 albertel 1849: my (%hash) = @_;
1850: my $result=&hashref2str(\%hash);
1.265 albertel 1851: $result=~s/^__HASH_REF__//;
1852: $result=~s/__END_HASH_REF__$//;
1.204 albertel 1853: return $result;
1854: }
1855:
1856: sub hashref2str {
1857: my ($hashref)=@_;
1.265 albertel 1858: my $result='__HASH_REF__';
1.495 albertel 1859: foreach (sort(keys(%$hashref))) {
1.204 albertel 1860: if (ref($_) eq 'ARRAY') {
1.265 albertel 1861: $result.=&arrayref2str($_).'=';
1.204 albertel 1862: } elsif (ref($_) eq 'HASH') {
1.265 albertel 1863: $result.=&hashref2str($_).'=';
1.204 albertel 1864: } elsif (ref($_)) {
1.265 albertel 1865: $result.='=';
1866: #print("Got a ref of ".(ref($_))." skipping.");
1.204 albertel 1867: } else {
1.265 albertel 1868: if ($_) {$result.=&escape($_).'=';} else { last; }
1.204 albertel 1869: }
1870:
1.265 albertel 1871: if(ref($hashref->{$_}) eq 'ARRAY') {
1872: $result.=&arrayref2str($hashref->{$_}).'&';
1873: } elsif(ref($hashref->{$_}) eq 'HASH') {
1874: $result.=&hashref2str($hashref->{$_}).'&';
1875: } elsif(ref($hashref->{$_})) {
1876: $result.='&';
1877: #print("Got a ref of ".(ref($hashref->{$_}))." skipping.");
1.204 albertel 1878: } else {
1.265 albertel 1879: $result.=&escape($hashref->{$_}).'&';
1.204 albertel 1880: }
1881: }
1.168 albertel 1882: $result=~s/\&$//;
1.265 albertel 1883: $result .= '__END_HASH_REF__';
1.168 albertel 1884: return $result;
1885: }
1886:
1887: sub str2hash {
1.265 albertel 1888: my ($string)=@_;
1889: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
1890: return %$hash;
1891: }
1892:
1893: sub str2hashref {
1.168 albertel 1894: my ($string) = @_;
1.265 albertel 1895:
1896: my %hash;
1897:
1898: if($string !~ /^__HASH_REF__/) {
1899: if (! ($string eq '' || !defined($string))) {
1900: $hash{'error'}='Not hash reference';
1901: }
1902: return (\%hash, $string);
1903: }
1904:
1905: $string =~ s/^__HASH_REF__//;
1906:
1907: while($string !~ /^__END_HASH_REF__/) {
1908: #key
1909: my $key='';
1910: if($string =~ /^__HASH_REF__/) {
1911: ($key, $string)=&str2hashref($string);
1912: if(defined($key->{'error'})) {
1913: $hash{'error'}='Bad data';
1914: return (\%hash, $string);
1915: }
1916: } elsif($string =~ /^__ARRAY_REF__/) {
1917: ($key, $string)=&str2arrayref($string);
1918: if($key->[0] eq 'Array reference error') {
1919: $hash{'error'}='Bad data';
1920: return (\%hash, $string);
1921: }
1922: } else {
1923: $string =~ s/^(.*?)=//;
1.267 albertel 1924: $key=&unescape($1);
1.265 albertel 1925: }
1926: $string =~ s/^=//;
1927:
1928: #value
1929: my $value='';
1930: if($string =~ /^__HASH_REF__/) {
1931: ($value, $string)=&str2hashref($string);
1932: if(defined($value->{'error'})) {
1933: $hash{'error'}='Bad data';
1934: return (\%hash, $string);
1935: }
1936: } elsif($string =~ /^__ARRAY_REF__/) {
1937: ($value, $string)=&str2arrayref($string);
1938: if($value->[0] eq 'Array reference error') {
1939: $hash{'error'}='Bad data';
1940: return (\%hash, $string);
1941: }
1942: } else {
1943: $value=&get_scalar(\$string,'__END_HASH_REF__');
1944: }
1945: $string =~ s/^&//;
1946:
1947: $hash{$key}=$value;
1.204 albertel 1948: }
1.265 albertel 1949:
1950: $string =~ s/^__END_HASH_REF__//;
1951:
1952: return (\%hash, $string);
1.204 albertel 1953: }
1954:
1955: sub str2array {
1.265 albertel 1956: my ($string)=@_;
1957: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
1958: return @$array;
1959: }
1960:
1961: sub str2arrayref {
1.204 albertel 1962: my ($string) = @_;
1.265 albertel 1963: my @array;
1964:
1965: if($string !~ /^__ARRAY_REF__/) {
1966: if (! ($string eq '' || !defined($string))) {
1967: $array[0]='Array reference error';
1968: }
1969: return (\@array, $string);
1970: }
1971:
1972: $string =~ s/^__ARRAY_REF__//;
1973:
1974: while($string !~ /^__END_ARRAY_REF__/) {
1975: my $value='';
1976: if($string =~ /^__HASH_REF__/) {
1977: ($value, $string)=&str2hashref($string);
1978: if(defined($value->{'error'})) {
1979: $array[0] ='Array reference error';
1980: return (\@array, $string);
1981: }
1982: } elsif($string =~ /^__ARRAY_REF__/) {
1983: ($value, $string)=&str2arrayref($string);
1984: if($value->[0] eq 'Array reference error') {
1985: $array[0] ='Array reference error';
1986: return (\@array, $string);
1987: }
1988: } else {
1989: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
1990: }
1991: $string =~ s/^&//;
1992:
1993: push(@array, $value);
1.191 harris41 1994: }
1.265 albertel 1995:
1996: $string =~ s/^__END_ARRAY_REF__//;
1997:
1998: return (\@array, $string);
1.168 albertel 1999: }
2000:
1.167 albertel 2001: # -------------------------------------------------------------------Temp Store
2002:
1.168 albertel 2003: sub tmpreset {
2004: my ($symb,$namespace,$domain,$stuname) = @_;
2005: if (!$symb) {
2006: $symb=&symbread();
1.380 albertel 2007: if (!$symb) { $symb= $ENV{'request.url'}; }
1.168 albertel 2008: }
2009: $symb=escape($symb);
2010:
2011: if (!$namespace) { $namespace=$ENV{'request.state'}; }
2012: $namespace=~s/\//\_/g;
2013: $namespace=~s/\W//g;
2014:
2015: if (!$domain) { $domain=$ENV{'user.domain'}; }
2016: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1.591 albertel 2017: if ($domain eq 'public' && $stuname eq 'public') {
2018: $stuname=$ENV{'REMOTE_ADDR'};
2019: }
1.168 albertel 2020: my $path=$perlvar{'lonDaemons'}.'/tmp';
2021: my %hash;
2022: if (tie(%hash,'GDBM_File',
2023: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2024: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2025: foreach my $key (keys %hash) {
1.180 albertel 2026: if ($key=~ /:$symb/) {
1.168 albertel 2027: delete($hash{$key});
2028: }
2029: }
2030: }
2031: }
2032:
1.167 albertel 2033: sub tmpstore {
1.168 albertel 2034: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2035:
2036: if (!$symb) {
2037: $symb=&symbread();
2038: if (!$symb) { $symb= $ENV{'request.url'}; }
2039: }
2040: $symb=escape($symb);
2041:
2042: if (!$namespace) {
2043: # I don't think we would ever want to store this for a course.
2044: # it seems this will only be used if we don't have a course.
2045: #$namespace=$ENV{'request.course.id'};
2046: #if (!$namespace) {
2047: $namespace=$ENV{'request.state'};
2048: #}
2049: }
2050: $namespace=~s/\//\_/g;
2051: $namespace=~s/\W//g;
2052: if (!$domain) { $domain=$ENV{'user.domain'}; }
2053: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1.591 albertel 2054: if ($domain eq 'public' && $stuname eq 'public') {
2055: $stuname=$ENV{'REMOTE_ADDR'};
2056: }
1.168 albertel 2057: my $now=time;
2058: my %hash;
2059: my $path=$perlvar{'lonDaemons'}.'/tmp';
2060: if (tie(%hash,'GDBM_File',
2061: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2062: &GDBM_WRCREAT(),0640)) {
1.168 albertel 2063: $hash{"version:$symb"}++;
2064: my $version=$hash{"version:$symb"};
2065: my $allkeys='';
2066: foreach my $key (keys(%$storehash)) {
2067: $allkeys.=$key.':';
1.591 albertel 2068: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
1.168 albertel 2069: }
2070: $hash{"$version:$symb:timestamp"}=$now;
2071: $allkeys.='timestamp';
2072: $hash{"$version:keys:$symb"}=$allkeys;
2073: if (untie(%hash)) {
2074: return 'ok';
2075: } else {
2076: return "error:$!";
2077: }
2078: } else {
2079: return "error:$!";
2080: }
2081: }
1.167 albertel 2082:
1.168 albertel 2083: # -----------------------------------------------------------------Temp Restore
1.167 albertel 2084:
1.168 albertel 2085: sub tmprestore {
2086: my ($symb,$namespace,$domain,$stuname) = @_;
1.167 albertel 2087:
1.168 albertel 2088: if (!$symb) {
2089: $symb=&symbread();
2090: if (!$symb) { $symb= $ENV{'request.url'}; }
2091: }
2092: $symb=escape($symb);
2093:
2094: if (!$namespace) { $namespace=$ENV{'request.state'}; }
1.591 albertel 2095:
1.168 albertel 2096: if (!$domain) { $domain=$ENV{'user.domain'}; }
2097: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1.591 albertel 2098: if ($domain eq 'public' && $stuname eq 'public') {
2099: $stuname=$ENV{'REMOTE_ADDR'};
2100: }
1.168 albertel 2101: my %returnhash;
2102: $namespace=~s/\//\_/g;
2103: $namespace=~s/\W//g;
2104: my %hash;
2105: my $path=$perlvar{'lonDaemons'}.'/tmp';
2106: if (tie(%hash,'GDBM_File',
2107: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1.256 albertel 2108: &GDBM_READER(),0640)) {
1.168 albertel 2109: my $version=$hash{"version:$symb"};
2110: $returnhash{'version'}=$version;
2111: my $scope;
2112: for ($scope=1;$scope<=$version;$scope++) {
2113: my $vkeys=$hash{"$scope:keys:$symb"};
2114: my @keys=split(/:/,$vkeys);
2115: my $key;
2116: $returnhash{"$scope:keys"}=$vkeys;
2117: foreach $key (@keys) {
1.591 albertel 2118: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
2119: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
1.167 albertel 2120: }
2121: }
1.168 albertel 2122: if (!(untie(%hash))) {
2123: return "error:$!";
2124: }
2125: } else {
2126: return "error:$!";
2127: }
2128: return %returnhash;
1.167 albertel 2129: }
2130:
1.9 www 2131: # ----------------------------------------------------------------------- Store
2132:
2133: sub store {
1.124 www 2134: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2135: my $home='';
2136:
1.168 albertel 2137: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2138:
1.213 www 2139: $symb=&symbclean($symb);
1.122 albertel 2140: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2141:
1.325 www 2142: if (!$domain) { $domain=$ENV{'user.domain'}; }
2143: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2144:
2145: &devalidate($symb,$stuname,$domain);
1.109 www 2146:
2147: $symb=escape($symb);
1.187 www 2148: if (!$namespace) {
2149: unless ($namespace=$ENV{'request.course.id'}) {
2150: return '';
2151: }
2152: }
1.122 albertel 2153: if (!$home) { $home=$ENV{'user.home'}; }
1.447 www 2154:
2155: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2156: $$storehash{'host'}=$perlvar{'lonHostID'};
2157:
1.12 www 2158: my $namevalue='';
1.191 harris41 2159: foreach (keys %$storehash) {
1.591 albertel 2160: $namevalue.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2161: }
1.12 www 2162: $namevalue=~s/\&$//;
1.187 www 2163: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
1.124 www 2164: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.9 www 2165: }
2166:
1.47 www 2167: # -------------------------------------------------------------- Critical Store
2168:
2169: sub cstore {
1.124 www 2170: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2171: my $home='';
2172:
1.168 albertel 2173: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2174:
1.213 www 2175: $symb=&symbclean($symb);
1.122 albertel 2176: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 2177:
1.325 www 2178: if (!$domain) { $domain=$ENV{'user.domain'}; }
2179: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2180:
2181: &devalidate($symb,$stuname,$domain);
1.109 www 2182:
2183: $symb=escape($symb);
1.187 www 2184: if (!$namespace) {
2185: unless ($namespace=$ENV{'request.course.id'}) {
2186: return '';
2187: }
2188: }
1.122 albertel 2189: if (!$home) { $home=$ENV{'user.home'}; }
1.447 www 2190:
2191: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2192: $$storehash{'host'}=$perlvar{'lonHostID'};
1.122 albertel 2193:
1.47 www 2194: my $namevalue='';
1.191 harris41 2195: foreach (keys %$storehash) {
1.591 albertel 2196: $namevalue.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2197: }
1.47 www 2198: $namevalue=~s/\&$//;
1.187 www 2199: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
1.188 www 2200: return critical
2201: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.47 www 2202: }
2203:
1.9 www 2204: # --------------------------------------------------------------------- Restore
2205:
2206: sub restore {
1.124 www 2207: my ($symb,$namespace,$domain,$stuname) = @_;
2208: my $home='';
2209:
1.168 albertel 2210: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 2211:
1.122 albertel 2212: if (!$symb) {
2213: unless ($symb=escape(&symbread())) { return ''; }
2214: } else {
1.213 www 2215: $symb=&escape(&symbclean($symb));
1.122 albertel 2216: }
1.188 www 2217: if (!$namespace) {
2218: unless ($namespace=$ENV{'request.course.id'}) {
2219: return '';
2220: }
2221: }
1.122 albertel 2222: if (!$domain) { $domain=$ENV{'user.domain'}; }
2223: if (!$stuname) { $stuname=$ENV{'user.name'}; }
2224: if (!$home) { $home=$ENV{'user.home'}; }
2225: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
2226:
1.12 www 2227: my %returnhash=();
1.191 harris41 2228: foreach (split(/\&/,$answer)) {
1.12 www 2229: my ($name,$value)=split(/\=/,$_);
1.591 albertel 2230: $returnhash{&unescape($name)}=&thaw_unescape($value);
1.191 harris41 2231: }
1.75 www 2232: my $version;
2233: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.191 harris41 2234: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1.75 www 2235: $returnhash{$_}=$returnhash{$version.':'.$_};
1.191 harris41 2236: }
1.75 www 2237: }
1.13 www 2238: return %returnhash;
1.34 www 2239: }
2240:
2241: # ---------------------------------------------------------- Course Description
2242:
2243: sub coursedescription {
2244: my $courseid=shift;
2245: $courseid=~s/^\///;
1.49 www 2246: $courseid=~s/\_/\//g;
1.34 www 2247: my ($cdomain,$cnum)=split(/\//,$courseid);
1.129 albertel 2248: my $chome=&homeserver($cnum,$cdomain);
1.302 albertel 2249: my $normalid=$cdomain.'_'.$cnum;
2250: # need to always cache even if we get errors otherwise we keep
2251: # trying and trying and trying to get the course description.
2252: my %envhash=();
2253: my %returnhash=();
2254: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.34 www 2255: if ($chome ne 'no_host') {
1.302 albertel 2256: %returnhash=&dump('environment',$cdomain,$cnum);
1.129 albertel 2257: if (!exists($returnhash{'con_lost'})) {
2258: $returnhash{'home'}= $chome;
2259: $returnhash{'domain'} = $cdomain;
2260: $returnhash{'num'} = $cnum;
1.130 albertel 2261: while (my ($name,$value) = each %returnhash) {
1.53 www 2262: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.129 albertel 2263: }
1.270 www 2264: $returnhash{'url'}=&clutter($returnhash{'url'});
1.34 www 2265: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 2266: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.60 www 2267: $envhash{'course.'.$normalid.'.home'}=$chome;
2268: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
2269: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.34 www 2270: }
2271: }
1.302 albertel 2272: &appenv(%envhash);
2273: return %returnhash;
1.461 www 2274: }
2275:
2276: # -------------------------------------------------See if a user is privileged
2277:
2278: sub privileged {
2279: my ($username,$domain)=@_;
2280: my $rolesdump=&reply("dump:$domain:$username:roles",
2281: &homeserver($username,$domain));
2282: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
2283: my $now=time;
2284: if ($rolesdump ne '') {
2285: foreach (split(/&/,$rolesdump)) {
1.586 albertel 2286: if ($_!~/^rolesdef_/) {
1.461 www 2287: my ($area,$role)=split(/=/,$_);
2288: $area=~s/\_\w\w$//;
2289: my ($trole,$tend,$tstart)=split(/_/,$role);
2290: if (($trole eq 'dc') || ($trole eq 'su')) {
2291: my $active=1;
2292: if ($tend) {
2293: if ($tend<$now) { $active=0; }
2294: }
2295: if ($tstart) {
2296: if ($tstart>$now) { $active=0; }
2297: }
2298: if ($active) { return 1; }
2299: }
2300: }
2301: }
2302: }
2303: return 0;
1.9 www 2304: }
1.1 albertel 2305:
1.103 harris41 2306: # -------------------------------------------------------- Get user privileges
1.11 www 2307:
2308: sub rolesinit {
2309: my ($domain,$username,$authhost)=@_;
2310: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 2311: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 2312: my %allroles=();
2313: my $now=time;
1.21 www 2314: my $userroles="user.login.time=$now\n";
1.11 www 2315:
2316: if ($rolesdump ne '') {
1.191 harris41 2317: foreach (split(/&/,$rolesdump)) {
1.586 albertel 2318: if ($_!~/^rolesdef_/) {
1.11 www 2319: my ($area,$role)=split(/=/,$_);
1.587 albertel 2320: $area=~s/\_\w\w$//;
2321:
2322: my ($trole,$tend,$tstart);
2323: if ($role=~/^cr/) {
2324: ($trole,my $trest)=($role=~m|^(cr/\w+/\w+/[a-zA-Z0-9]+)_(.*)$|);
2325: ($tend,$tstart)=split('_',$trest);
2326: } else {
2327: ($trole,$tend,$tstart)=split(/_/,$role);
2328: }
1.576 albertel 2329: $userroles.=&set_arearole($trole,$area,$tstart,$tend,$domain,$username);
1.567 raeburn 2330: if (($tend!=0) && ($tend<$now)) { $trole=''; }
2331: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
1.11 www 2332: if (($area ne '') && ($trole ne '')) {
1.347 albertel 2333: my $spec=$trole.'.'.$area;
2334: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
2335: if ($trole =~ /^cr\//) {
1.567 raeburn 2336: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
1.347 albertel 2337: } else {
1.567 raeburn 2338: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
1.347 albertel 2339: }
1.12 www 2340: }
2341: }
1.191 harris41 2342: }
1.567 raeburn 2343: my ($author,$adv) = &set_userprivs(\$userroles,\%allroles);
1.128 www 2344: $userroles.='user.adv='.$adv."\n".
2345: 'user.author='.$author."\n";
1.126 www 2346: $ENV{'user.adv'}=$adv;
1.11 www 2347: }
2348: return $userroles;
2349: }
2350:
1.567 raeburn 2351: sub set_arearole {
2352: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
2353: # log the associated role with the area
2354: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
2355: return 'user.role.'.$trole.'.'.$area.'='.$tstart.'.'.$tend."\n";
2356: }
2357:
2358: sub custom_roleprivs {
2359: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
2360: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
2361: my $homsvr=homeserver($rauthor,$rdomain);
2362: if ($hostname{$homsvr} ne '') {
2363: my ($rdummy,$roledef)=
2364: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
2365: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
2366: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
2367: if (defined($syspriv)) {
2368: $$allroles{'cm./'}.=':'.$syspriv;
2369: $$allroles{$spec.'./'}.=':'.$syspriv;
2370: }
2371: if ($tdomain ne '') {
2372: if (defined($dompriv)) {
2373: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
2374: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
2375: }
2376: if (($trest ne '') && (defined($coursepriv))) {
2377: $$allroles{'cm.'.$area}.=':'.$coursepriv;
2378: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
2379: }
2380: }
2381: }
2382: }
2383: }
2384:
2385:
2386: sub standard_roleprivs {
2387: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
2388: if (defined($pr{$trole.':s'})) {
2389: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
2390: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
2391: }
2392: if ($tdomain ne '') {
2393: if (defined($pr{$trole.':d'})) {
2394: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2395: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
2396: }
2397: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
2398: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
2399: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
2400: }
2401: }
2402: }
2403:
2404: sub set_userprivs {
2405: my ($userroles,$allroles) = @_;
2406: my $author=0;
2407: my $adv=0;
2408: foreach (keys %{$allroles}) {
2409: my %thesepriv=();
2410: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
2411: foreach (split(/:/,$$allroles{$_})) {
2412: if ($_ ne '') {
2413: my ($privilege,$restrictions)=split(/&/,$_);
2414: if ($restrictions eq '') {
2415: $thesepriv{$privilege}='F';
2416: } elsif ($thesepriv{$privilege} ne 'F') {
2417: $thesepriv{$privilege}.=$restrictions;
2418: }
2419: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
2420: }
2421: }
2422: my $thesestr='';
2423: foreach (keys %thesepriv) { $thesestr.=':'.$_.'&'.$thesepriv{$_}; }
2424: $$userroles.='user.priv.'.$_.'='.$thesestr."\n";
2425: }
2426: return ($author,$adv);
2427: }
2428:
1.12 www 2429: # --------------------------------------------------------------- get interface
2430:
2431: sub get {
1.131 albertel 2432: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2433: my $items='';
1.191 harris41 2434: foreach (@$storearr) {
1.12 www 2435: $items.=escape($_).'&';
1.191 harris41 2436: }
1.12 www 2437: $items=~s/\&$//;
1.131 albertel 2438: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2439: if (!$uname) { $uname=$ENV{'user.name'}; }
2440: my $uhome=&homeserver($uname,$udomain);
2441:
1.133 albertel 2442: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2443: my @pairs=split(/\&/,$rep);
1.273 albertel 2444: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2445: return @pairs;
2446: }
1.15 www 2447: my %returnhash=();
1.42 www 2448: my $i=0;
1.191 harris41 2449: foreach (@$storearr) {
1.557 albertel 2450: $returnhash{$_}=&thaw_unescape($pairs[$i]);
1.42 www 2451: $i++;
1.191 harris41 2452: }
1.15 www 2453: return %returnhash;
1.27 www 2454: }
2455:
2456: # --------------------------------------------------------------- del interface
2457:
2458: sub del {
1.133 albertel 2459: my ($namespace,$storearr,$udomain,$uname)=@_;
1.27 www 2460: my $items='';
1.191 harris41 2461: foreach (@$storearr) {
1.27 www 2462: $items.=escape($_).'&';
1.191 harris41 2463: }
1.27 www 2464: $items=~s/\&$//;
1.133 albertel 2465: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2466: if (!$uname) { $uname=$ENV{'user.name'}; }
2467: my $uhome=&homeserver($uname,$udomain);
2468:
2469: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 2470: }
2471:
2472: # -------------------------------------------------------------- dump interface
2473:
2474: sub dump {
1.193 www 2475: my ($namespace,$udomain,$uname,$regexp)=@_;
1.129 albertel 2476: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2477: if (!$uname) { $uname=$ENV{'user.name'}; }
2478: my $uhome=&homeserver($uname,$udomain);
1.193 www 2479: if ($regexp) {
2480: $regexp=&escape($regexp);
2481: } else {
2482: $regexp='.';
2483: }
2484: my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
1.12 www 2485: my @pairs=split(/\&/,$rep);
2486: my %returnhash=();
1.191 harris41 2487: foreach (@pairs) {
1.12 www 2488: my ($key,$value)=split(/=/,$_);
1.557 albertel 2489: $returnhash{unescape($key)}=&thaw_unescape($value);
1.318 matthew 2490: }
2491: return %returnhash;
1.407 www 2492: }
2493:
2494: # -------------------------------------------------------------- keys interface
2495:
2496: sub getkeys {
2497: my ($namespace,$udomain,$uname)=@_;
2498: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2499: if (!$uname) { $uname=$ENV{'user.name'}; }
2500: my $uhome=&homeserver($uname,$udomain);
2501: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
2502: my @keyarray=();
2503: foreach (split(/\&/,$rep)) {
2504: push (@keyarray,&unescape($_));
2505: }
2506: return @keyarray;
1.318 matthew 2507: }
2508:
1.319 matthew 2509: # --------------------------------------------------------------- currentdump
2510: sub currentdump {
1.328 matthew 2511: my ($courseid,$sdom,$sname)=@_;
1.326 matthew 2512: $courseid = $ENV{'request.course.id'} if (! defined($courseid));
2513: $sdom = $ENV{'user.domain'} if (! defined($sdom));
2514: $sname = $ENV{'user.name'} if (! defined($sname));
2515: my $uhome = &homeserver($sname,$sdom);
2516: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
1.318 matthew 2517: return if ($rep =~ /^(error:|no_such_host)/);
1.319 matthew 2518: #
1.318 matthew 2519: my %returnhash=();
1.319 matthew 2520: #
2521: if ($rep eq "unknown_cmd") {
2522: # an old lond will not know currentdump
2523: # Do a dump and make it look like a currentdump
1.326 matthew 2524: my @tmp = &dump($courseid,$sdom,$sname,'.');
1.319 matthew 2525: return if ($tmp[0] =~ /^(error:|no_such_host)/);
2526: my %hash = @tmp;
2527: @tmp=();
1.424 matthew 2528: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
1.319 matthew 2529: } else {
2530: my @pairs=split(/\&/,$rep);
2531: foreach (@pairs) {
2532: my ($key,$value)=split(/=/,$_);
2533: my ($symb,$param) = split(/:/,$key);
2534: $returnhash{&unescape($symb)}->{&unescape($param)} =
1.557 albertel 2535: &thaw_unescape($value);
1.319 matthew 2536: }
1.191 harris41 2537: }
1.12 www 2538: return %returnhash;
1.424 matthew 2539: }
2540:
2541: sub convert_dump_to_currentdump{
2542: my %hash = %{shift()};
2543: my %returnhash;
2544: # Code ripped from lond, essentially. The only difference
2545: # here is the unescaping done by lonnet::dump(). Conceivably
2546: # we might run in to problems with parameter names =~ /^v\./
2547: while (my ($key,$value) = each(%hash)) {
2548: my ($v,$symb,$param) = split(/:/,$key);
2549: next if ($v eq 'version' || $symb eq 'keys');
2550: next if (exists($returnhash{$symb}) &&
2551: exists($returnhash{$symb}->{$param}) &&
2552: $returnhash{$symb}->{'v.'.$param} > $v);
2553: $returnhash{$symb}->{$param}=$value;
2554: $returnhash{$symb}->{'v.'.$param}=$v;
2555: }
2556: #
2557: # Remove all of the keys in the hashes which keep track of
2558: # the version of the parameter.
2559: while (my ($symb,$param_hash) = each(%returnhash)) {
2560: # use a foreach because we are going to delete from the hash.
2561: foreach my $key (keys(%$param_hash)) {
2562: delete($param_hash->{$key}) if ($key =~ /^v\./);
2563: }
2564: }
2565: return \%returnhash;
1.12 www 2566: }
2567:
1.449 matthew 2568: # --------------------------------------------------------------- inc interface
2569:
2570: sub inc {
2571: my ($namespace,$store,$udomain,$uname) = @_;
2572: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2573: if (!$uname) { $uname=$ENV{'user.name'}; }
2574: my $uhome=&homeserver($uname,$udomain);
2575: my $items='';
2576: if (! ref($store)) {
2577: # got a single value, so use that instead
2578: $items = &escape($store).'=&';
2579: } elsif (ref($store) eq 'SCALAR') {
2580: $items = &escape($$store).'=&';
2581: } elsif (ref($store) eq 'ARRAY') {
2582: $items = join('=&',map {&escape($_);} @{$store});
2583: } elsif (ref($store) eq 'HASH') {
2584: while (my($key,$value) = each(%{$store})) {
2585: $items.= &escape($key).'='.&escape($value).'&';
2586: }
2587: }
2588: $items=~s/\&$//;
2589: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
2590: }
2591:
1.12 www 2592: # --------------------------------------------------------------- put interface
2593:
2594: sub put {
1.134 albertel 2595: my ($namespace,$storehash,$udomain,$uname)=@_;
2596: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2597: if (!$uname) { $uname=$ENV{'user.name'}; }
2598: my $uhome=&homeserver($uname,$udomain);
1.12 www 2599: my $items='';
1.191 harris41 2600: foreach (keys %$storehash) {
1.557 albertel 2601: $items.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2602: }
1.12 www 2603: $items=~s/\&$//;
1.134 albertel 2604: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1.47 www 2605: }
2606:
1.524 raeburn 2607: # ---------------------------------------------------------- putstore interface
2608:
2609: sub putstore {
2610: my ($namespace,$storehash,$udomain,$uname)=@_;
2611: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2612: if (!$uname) { $uname=$ENV{'user.name'}; }
2613: my $uhome=&homeserver($uname,$udomain);
2614: my $items='';
2615: my %allitems = ();
2616: foreach (keys %$storehash) {
2617: if ($_ =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
2618: my $key = $1.':keys:'.$2;
2619: $allitems{$key} .= $3.':';
2620: }
1.591 albertel 2621: $items.=$_.'='.&freeze_escape($$storehash{$_}).'&';
1.524 raeburn 2622: }
2623: foreach (keys %allitems) {
2624: $allitems{$_} =~ s/\:$//;
2625: $items.= $_.'='.$allitems{$_}.'&';
2626: }
2627: $items=~s/\&$//;
2628: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
2629: }
2630:
1.47 www 2631: # ------------------------------------------------------ critical put interface
2632:
2633: sub cput {
1.134 albertel 2634: my ($namespace,$storehash,$udomain,$uname)=@_;
2635: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2636: if (!$uname) { $uname=$ENV{'user.name'}; }
2637: my $uhome=&homeserver($uname,$udomain);
1.47 www 2638: my $items='';
1.191 harris41 2639: foreach (keys %$storehash) {
1.557 albertel 2640: $items.=escape($_).'='.&freeze_escape($$storehash{$_}).'&';
1.191 harris41 2641: }
1.47 www 2642: $items=~s/\&$//;
1.134 albertel 2643: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2644: }
2645:
2646: # -------------------------------------------------------------- eget interface
2647:
2648: sub eget {
1.133 albertel 2649: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 2650: my $items='';
1.191 harris41 2651: foreach (@$storearr) {
1.12 www 2652: $items.=escape($_).'&';
1.191 harris41 2653: }
1.12 www 2654: $items=~s/\&$//;
1.133 albertel 2655: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
2656: if (!$uname) { $uname=$ENV{'user.name'}; }
2657: my $uhome=&homeserver($uname,$udomain);
2658: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 2659: my @pairs=split(/\&/,$rep);
2660: my %returnhash=();
1.42 www 2661: my $i=0;
1.191 harris41 2662: foreach (@$storearr) {
1.557 albertel 2663: $returnhash{$_}=&thaw_unescape($pairs[$i]);
1.42 www 2664: $i++;
1.191 harris41 2665: }
1.12 www 2666: return %returnhash;
2667: }
2668:
1.341 www 2669: # ---------------------------------------------- Custom access rule evaluation
2670:
2671: sub customaccess {
2672: my ($priv,$uri)=@_;
1.342 www 2673: my ($urole,$urealm)=split(/\./,$ENV{'request.role'});
1.343 www 2674: $urealm=~s/^\W//;
2675: my ($udom,$ucrs,$usec)=split(/\//,$urealm);
1.341 www 2676: my $access=0;
2677: foreach (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
1.342 www 2678: my ($effect,$realm,$role)=split(/\:/,$_);
1.343 www 2679: if ($role) {
2680: if ($role ne $urole) { next; }
2681: }
2682: foreach (split(/\s*\,\s*/,$realm)) {
2683: my ($tdom,$tcrs,$tsec)=split(/\_/,$_);
2684: if ($tdom) {
2685: if ($tdom ne $udom) { next; }
2686: }
2687: if ($tcrs) {
2688: if ($tcrs ne $ucrs) { next; }
2689: }
2690: if ($tsec) {
2691: if ($tsec ne $usec) { next; }
2692: }
2693: $access=($effect eq 'allow');
2694: last;
1.342 www 2695: }
1.402 bowersj2 2696: if ($realm eq '' && $role eq '') {
2697: $access=($effect eq 'allow');
2698: }
1.341 www 2699: }
2700: return $access;
2701: }
2702:
1.103 harris41 2703: # ------------------------------------------------- Check for a user privilege
1.12 www 2704:
2705: sub allowed {
1.579 albertel 2706: my ($priv,$uri,$symb)=@_;
1.439 www 2707: $uri=&deversion($uri);
1.152 www 2708: my $orguri=$uri;
1.52 www 2709: $uri=&declutter($uri);
1.545 banghart 2710:
2711:
2712:
1.398 albertel 2713: if (defined($ENV{'allowed.'.$priv})) { return $ENV{'allowed.'.$priv}; }
1.54 www 2714: # Free bre access to adm and meta resources
1.529 albertel 2715: if (((($uri=~/^adm\//) && ($uri !~ m|/bulletinboard$|))
2716: || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 2717: return 'F';
1.159 www 2718: }
2719:
1.545 banghart 2720: # Free bre access to user's own portfolio contents
1.546 albertel 2721: my ($space,$domain,$name,$dir)=split('/',$uri);
1.611 albertel 2722: if (($space=~/^(uploaded|ediupload)$/) && ($ENV{'user.name'} eq $name) &&
1.546 albertel 2723: ($ENV{'user.domain'} eq $domain) && ('portfolio' eq $dir)) {
1.545 banghart 2724: return 'F';
2725: }
2726:
1.159 www 2727: # Free bre to public access
2728:
2729: if ($priv eq 'bre') {
1.238 www 2730: my $copyright=&metadata($uri,'copyright');
1.301 www 2731: if (($copyright eq 'public') && (!$ENV{'request.course.id'})) {
2732: return 'F';
2733: }
1.238 www 2734: if ($copyright eq 'priv') {
2735: $uri=~/([^\/]+)\/([^\/]+)\//;
2736: unless (($ENV{'user.name'} eq $2) && ($ENV{'user.domain'} eq $1)) {
2737: return '';
2738: }
2739: }
2740: if ($copyright eq 'domain') {
2741: $uri=~/([^\/]+)\/([^\/]+)\//;
2742: unless (($ENV{'user.domain'} eq $1) ||
2743: ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $1)) {
2744: return '';
2745: }
1.262 matthew 2746: }
2747: if ($ENV{'request.role'}=~ /li\.\//) {
2748: # Library role, so allow browsing of resources in this domain.
2749: return 'F';
1.238 www 2750: }
1.341 www 2751: if ($copyright eq 'custom') {
2752: unless (&customaccess($priv,$uri)) { return ''; }
2753: }
1.14 www 2754: }
1.264 matthew 2755: # Domain coordinator is trying to create a course
2756: if (($priv eq 'ccc') && ($ENV{'request.role'} =~ /^dc\./)) {
2757: # uri is the requested domain in this case.
2758: # comparison to 'request.role.domain' shows if the user has selected
2759: # a role of dc for the domain in question.
2760: return 'F' if ($uri eq $ENV{'request.role.domain'});
2761: }
1.29 www 2762:
1.52 www 2763: my $thisallowed='';
2764: my $statecond=0;
2765: my $courseprivid='';
2766:
2767: # Course
2768:
1.479 albertel 2769: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2770: $thisallowed.=$1;
2771: }
1.29 www 2772:
1.52 www 2773: # Domain
2774:
2775: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1.479 albertel 2776: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 2777: $thisallowed.=$1;
2778: }
1.52 www 2779:
2780: # Course: uri itself is a course
1.66 www 2781: my $courseuri=$uri;
2782: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 2783: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 2784:
1.83 www 2785: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.479 albertel 2786: =~/\Q$priv\E\&([^\:]*)/) {
1.12 www 2787: $thisallowed.=$1;
2788: }
1.29 www 2789:
1.314 www 2790: # URI is an uploaded document for this course
1.611 albertel 2791: # not allowing 'edit' access (editupload) to uploaded course docs
1.492 albertel 2792: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
1.612 albertel 2793: my $refuri=$ENV{'httpref.'.$orguri};
1.492 albertel 2794: if ($refuri) {
2795: if ($refuri =~ m|^/adm/|) {
2796: $thisallowed='F';
2797: }
2798: }
1.314 www 2799: }
1.492 albertel 2800:
1.52 www 2801: # Full access at system, domain or course-wide level? Exit.
1.29 www 2802:
2803: if ($thisallowed=~/F/) {
2804: return 'F';
2805: }
2806:
1.52 www 2807: # If this is generating or modifying users, exit with special codes
1.29 www 2808:
1.479 albertel 2809: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:\Q$priv\E\:/) {
1.52 www 2810: return $thisallowed;
2811: }
2812: #
1.103 harris41 2813: # Gathered so far: system, domain and course wide privileges
1.52 www 2814: #
2815: # Course: See if uri or referer is an individual resource that is part of
2816: # the course
2817:
2818: if ($ENV{'request.course.id'}) {
1.232 www 2819:
1.52 www 2820: $courseprivid=$ENV{'request.course.id'};
2821: if ($ENV{'request.course.sec'}) {
2822: $courseprivid.='/'.$ENV{'request.course.sec'};
2823: }
2824: $courseprivid=~s/\_/\//;
2825: my $checkreferer=1;
1.232 www 2826: my ($match,$cond)=&is_on_map($uri);
2827: if ($match) {
2828: $statecond=$cond;
1.52 www 2829: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1.479 albertel 2830: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2831: $thisallowed.=$1;
2832: $checkreferer=0;
2833: }
1.29 www 2834: }
1.83 www 2835:
1.148 www 2836: if ($checkreferer) {
1.152 www 2837: my $refuri=$ENV{'httpref.'.$orguri};
1.148 www 2838: unless ($refuri) {
1.191 harris41 2839: foreach (keys %ENV) {
1.148 www 2840: if ($_=~/^httpref\..*\*/) {
2841: my $pattern=$_;
1.156 www 2842: $pattern=~s/^httpref\.\/res\///;
1.148 www 2843: $pattern=~s/\*/\[\^\/\]\+/g;
2844: $pattern=~s/\//\\\//g;
1.152 www 2845: if ($orguri=~/$pattern/) {
1.148 www 2846: $refuri=$ENV{$_};
2847: }
2848: }
1.191 harris41 2849: }
1.148 www 2850: }
1.232 www 2851:
1.148 www 2852: if ($refuri) {
1.152 www 2853: $refuri=&declutter($refuri);
1.232 www 2854: my ($match,$cond)=&is_on_map($refuri);
2855: if ($match) {
2856: my $refstatecond=$cond;
1.52 www 2857: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1.479 albertel 2858: =~/\Q$priv\E\&([^\:]*)/) {
1.52 www 2859: $thisallowed.=$1;
1.53 www 2860: $uri=$refuri;
2861: $statecond=$refstatecond;
1.52 www 2862: }
2863: }
1.148 www 2864: }
1.29 www 2865: }
1.52 www 2866: }
1.29 www 2867:
1.52 www 2868: #
1.103 harris41 2869: # Gathered now: all privileges that could apply, and condition number
1.52 www 2870: #
2871: #
2872: # Full or no access?
2873: #
1.29 www 2874:
1.52 www 2875: if ($thisallowed=~/F/) {
2876: return 'F';
2877: }
1.29 www 2878:
1.52 www 2879: unless ($thisallowed) {
2880: return '';
2881: }
1.29 www 2882:
1.52 www 2883: # Restrictions exist, deal with them
2884: #
2885: # C:according to course preferences
2886: # R:according to resource settings
2887: # L:unless locked
2888: # X:according to user session state
2889: #
2890:
2891: # Possibly locked functionality, check all courses
1.54 www 2892: # Locks might take effect only after 10 minutes cache expiration for other
2893: # courses, and 2 minutes for current course
1.52 www 2894:
2895: my $envkey;
2896: if ($thisallowed=~/L/) {
2897: foreach $envkey (keys %ENV) {
1.54 www 2898: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
2899: my $courseid=$2;
2900: my $roleid=$1.'.'.$2;
1.92 www 2901: $courseid=~s/^\///;
1.54 www 2902: my $expiretime=600;
2903: if ($ENV{'request.role'} eq $roleid) {
2904: $expiretime=120;
2905: }
2906: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
2907: my $prefix='course.'.$cdom.'_'.$cnum.'.';
2908: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
2909: &coursedescription($courseid);
2910: }
1.479 albertel 2911: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
1.54 www 2912: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
2913: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 2914: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 2915: $ENV{'user.home'},
1.57 www 2916: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 2917: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 2918: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 2919: return '';
2920: }
2921: }
1.479 albertel 2922: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
1.54 www 2923: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
2924: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 2925: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 2926: $ENV{'user.home'},
1.57 www 2927: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 2928: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 2929: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 2930: return '';
2931: }
2932: }
2933: }
1.29 www 2934: }
1.52 www 2935: }
2936:
2937: #
2938: # Rest of the restrictions depend on selected course
2939: #
2940:
2941: unless ($ENV{'request.course.id'}) {
2942: return '1';
2943: }
1.29 www 2944:
1.52 www 2945: #
2946: # Now user is definitely in a course
2947: #
1.53 www 2948:
2949:
2950: # Course preferences
2951:
2952: if ($thisallowed=~/C/) {
1.54 www 2953: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.237 www 2954: my $unamedom=$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.54 www 2955: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1.479 albertel 2956: =~/\Q$rolecode\E/) {
1.57 www 2957: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
2958: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.237 www 2959: $ENV{'request.course.id'});
2960: return '';
2961: }
2962:
2963: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.users.denied'}
1.479 albertel 2964: =~/\Q$unamedom\E/) {
1.237 www 2965: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
2966: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
1.54 www 2967: $ENV{'request.course.id'});
2968: return '';
2969: }
1.53 www 2970: }
2971:
2972: # Resource preferences
2973:
2974: if ($thisallowed=~/R/) {
1.54 www 2975: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.479 albertel 2976: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
1.341 www 2977: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1.57 www 2978: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.341 www 2979: return '';
1.54 www 2980: }
1.53 www 2981: }
1.30 www 2982:
1.246 www 2983: # Restricted by state or randomout?
1.30 www 2984:
1.52 www 2985: if ($thisallowed=~/X/) {
1.247 www 2986: if ($ENV{'acc.randomout'}) {
1.579 albertel 2987: if (!$symb) { $symb=&symbread($uri,1); }
1.479 albertel 2988: if (($symb) && ($ENV{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
1.248 www 2989: return '';
2990: }
1.247 www 2991: }
2992: if (&condval($statecond)) {
1.52 www 2993: return '2';
2994: } else {
2995: return '';
2996: }
2997: }
1.30 www 2998:
1.52 www 2999: return 'F';
1.232 www 3000: }
3001:
3002: # --------------------------------------------------- Is a resource on the map?
3003:
3004: sub is_on_map {
3005: my $uri=&declutter(shift);
1.435 www 3006: $uri=~s/\.\d+\.(\w+)$/\.$1/;
1.232 www 3007: my @uriparts=split(/\//,$uri);
3008: my $filename=$uriparts[$#uriparts];
3009: my $pathname=$uri;
1.289 bowersj2 3010: $pathname=~s|/\Q$filename\E$||;
1.332 www 3011: $pathname=~s/^adm\/wrapper\///;
1.289 bowersj2 3012: #Trying to find the conditional for the file
1.232 www 3013: my $match=($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.289 bowersj2 3014: /\&\Q$filename\E\:([\d\|]+)\&/);
1.232 www 3015: if ($match) {
1.289 bowersj2 3016: return (1,$1);
3017: } else {
1.434 www 3018: return (0,0);
1.289 bowersj2 3019: }
1.12 www 3020: }
3021:
1.427 www 3022: # --------------------------------------------------------- Get symb from alias
3023:
3024: sub get_symb_from_alias {
3025: my $symb=shift;
3026: my ($map,$resid,$url)=&decode_symb($symb);
3027: # Already is a symb
3028: if ($url) { return $symb; }
3029: # Must be an alias
3030: my $aliassymb='';
3031: my %bighash;
3032: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
3033: &GDBM_READER(),0640)) {
3034: my $rid=$bighash{'mapalias_'.$symb};
3035: if ($rid) {
3036: my ($mapid,$resid)=split(/\./,$rid);
1.429 albertel 3037: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
3038: $resid,$bighash{'src_'.$rid});
1.427 www 3039: }
3040: untie %bighash;
3041: }
3042: return $aliassymb;
3043: }
3044:
1.12 www 3045: # ----------------------------------------------------------------- Define Role
3046:
3047: sub definerole {
3048: if (allowed('mcr','/')) {
3049: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.392 www 3050: foreach (split(':',$sysrole)) {
1.21 www 3051: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3052: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
3053: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
3054: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3055: return "refused:s:$crole&$cqual";
3056: }
3057: }
1.191 harris41 3058: }
1.392 www 3059: foreach (split(':',$domrole)) {
1.21 www 3060: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3061: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
3062: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
3063: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
1.21 www 3064: return "refused:d:$crole&$cqual";
3065: }
3066: }
1.191 harris41 3067: }
1.392 www 3068: foreach (split(':',$courole)) {
1.21 www 3069: my ($crole,$cqual)=split(/\&/,$_);
1.479 albertel 3070: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
3071: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
3072: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
1.21 www 3073: return "refused:c:$crole&$cqual";
3074: }
3075: }
1.191 harris41 3076: }
1.12 www 3077: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
3078: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 3079: "rolesdef_$rolename=".
3080: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 3081: return reply($command,$ENV{'user.home'});
3082: } else {
3083: return 'refused';
3084: }
1.105 harris41 3085: }
3086:
3087: # ---------------- Make a metadata query against the network of library servers
3088:
3089: sub metadata_query {
1.244 matthew 3090: my ($query,$custom,$customshow,$server_array)=@_;
1.120 harris41 3091: my %rhash;
1.244 matthew 3092: my @server_list = (defined($server_array) ? @$server_array
3093: : keys(%libserv) );
3094: for my $server (@server_list) {
1.118 harris41 3095: unless ($custom or $customshow) {
3096: my $reply=&reply("querysend:".&escape($query),$server);
3097: $rhash{$server}=$reply;
3098: }
3099: else {
3100: my $reply=&reply("querysend:".&escape($query).':'.
3101: &escape($custom).':'.&escape($customshow),
3102: $server);
3103: $rhash{$server}=$reply;
3104: }
1.112 harris41 3105: }
1.118 harris41 3106: return \%rhash;
1.240 www 3107: }
3108:
3109: # ----------------------------------------- Send log queries and wait for reply
3110:
3111: sub log_query {
3112: my ($uname,$udom,$query,%filters)=@_;
3113: my $uhome=&homeserver($uname,$udom);
3114: if ($uhome eq 'no_host') { return 'error: no_host'; }
3115: my $uhost=$hostname{$uhome};
1.241 www 3116: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys %filters));
1.240 www 3117: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
3118: $uhome);
1.479 albertel 3119: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
1.242 www 3120: return get_query_reply($queryid);
3121: }
3122:
1.508 raeburn 3123: # ------- Request retrieval of institutional classlists for course(s)
1.506 raeburn 3124:
3125: sub fetch_enrollment_query {
1.511 raeburn 3126: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
1.508 raeburn 3127: my $homeserver;
1.547 raeburn 3128: my $maxtries = 1;
1.508 raeburn 3129: if ($context eq 'automated') {
3130: $homeserver = $perlvar{'lonHostID'};
1.547 raeburn 3131: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
1.508 raeburn 3132: } else {
3133: $homeserver = &homeserver($cnum,$dom);
3134: }
1.506 raeburn 3135: my $host=$hostname{$homeserver};
3136: my $cmd = '';
3137: foreach (keys %{$affiliatesref}) {
1.508 raeburn 3138: $cmd .= $_.'='.join(",",@{$$affiliatesref{$_}}).'%%';
1.506 raeburn 3139: }
3140: $cmd =~ s/%%$//;
3141: $cmd = &escape($cmd);
3142: my $query = 'fetchenrollment';
3143: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$ENV{'user.name'}.':'.$cmd,$homeserver);
1.526 raeburn 3144: unless ($queryid=~/^\Q$host\E\_/) {
3145: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
3146: return 'error: '.$queryid;
3147: }
1.506 raeburn 3148: my $reply = &get_query_reply($queryid);
1.547 raeburn 3149: my $tries = 1;
3150: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
3151: $reply = &get_query_reply($queryid);
3152: $tries ++;
3153: }
1.526 raeburn 3154: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1.547 raeburn 3155: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$ENV{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
1.526 raeburn 3156: } else {
1.515 raeburn 3157: my @responses = split/:/,$reply;
3158: if ($homeserver eq $perlvar{'lonHostID'}) {
3159: foreach (@responses) {
3160: my ($key,$value) = split/=/,$_;
3161: $$replyref{$key} = $value;
3162: }
3163: } else {
1.506 raeburn 3164: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
3165: foreach (@responses) {
3166: my ($key,$value) = split/=/,$_;
3167: $$replyref{$key} = $value;
3168: if ($value > 0) {
3169: foreach (@{$$affiliatesref{$key}}) {
3170: my $filename = $dom.'_'.$key.'_'.$_.'_classlist.xml';
3171: my $destname = $pathname.'/'.$filename;
3172: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
1.526 raeburn 3173: if ($xml_classlist =~ /^error/) {
3174: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
3175: } else {
1.506 raeburn 3176: if ( open(FILE,">$destname") ) {
3177: print FILE &unescape($xml_classlist);
3178: close(FILE);
1.526 raeburn 3179: } else {
3180: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
1.506 raeburn 3181: }
3182: }
3183: }
3184: }
3185: }
3186: }
3187: return 'ok';
3188: }
3189: return 'error';
3190: }
3191:
1.242 www 3192: sub get_query_reply {
3193: my $queryid=shift;
1.240 www 3194: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
3195: my $reply='';
3196: for (1..100) {
3197: sleep 2;
3198: if (-e $replyfile.'.end') {
1.448 albertel 3199: if (open(my $fh,$replyfile)) {
1.240 www 3200: $reply.=<$fh>;
1.448 albertel 3201: close($fh);
1.240 www 3202: } else { return 'error: reply_file_error'; }
1.242 www 3203: return &unescape($reply);
3204: }
1.240 www 3205: }
1.242 www 3206: return 'timeout:'.$queryid;
1.240 www 3207: }
3208:
3209: sub courselog_query {
1.241 www 3210: #
3211: # possible filters:
3212: # url: url or symb
3213: # username
3214: # domain
3215: # action: view, submit, grade
3216: # start: timestamp
3217: # end: timestamp
3218: #
1.240 www 3219: my (%filters)=@_;
3220: unless ($ENV{'request.course.id'}) { return 'no_course'; }
1.241 www 3221: if ($filters{'url'}) {
3222: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
3223: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
3224: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
3225: }
1.240 www 3226: my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
3227: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
3228: return &log_query($cname,$cdom,'courselog',%filters);
3229: }
3230:
3231: sub userlog_query {
3232: my ($uname,$udom,%filters)=@_;
3233: return &log_query($uname,$udom,'userlog',%filters);
1.12 www 3234: }
3235:
1.506 raeburn 3236: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
3237:
3238: sub auto_run {
1.508 raeburn 3239: my ($cnum,$cdom) = @_;
3240: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3241: my $response = &reply('autorun:'.$cdom,$homeserver);
1.506 raeburn 3242: return $response;
3243: }
3244:
3245: sub auto_get_sections {
1.508 raeburn 3246: my ($cnum,$cdom,$inst_coursecode) = @_;
3247: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3248: my @secs = ();
1.511 raeburn 3249: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
1.506 raeburn 3250: unless ($response eq 'refused') {
3251: @secs = split/:/,$response;
3252: }
3253: return @secs;
3254: }
3255:
3256: sub auto_new_course {
1.508 raeburn 3257: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
3258: my $homeserver = &homeserver($cnum,$cdom);
1.515 raeburn 3259: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
1.506 raeburn 3260: return $response;
3261: }
3262:
3263: sub auto_validate_courseID {
1.508 raeburn 3264: my ($cnum,$cdom,$inst_course_id) = @_;
3265: my $homeserver = &homeserver($cnum,$cdom);
1.511 raeburn 3266: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
1.506 raeburn 3267: return $response;
3268: }
3269:
3270: sub auto_create_password {
1.508 raeburn 3271: my ($cnum,$cdom,$authparam) = @_;
3272: my $homeserver = &homeserver($cnum,$cdom);
1.506 raeburn 3273: my $create_passwd = 0;
3274: my $authchk = '';
1.511 raeburn 3275: my $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
1.506 raeburn 3276: if ($response eq 'refused') {
3277: $authchk = 'refused';
3278: } else {
3279: ($authparam,$create_passwd,$authchk) = split/:/,$response;
3280: }
3281: return ($authparam,$create_passwd,$authchk);
3282: }
3283:
1.521 raeburn 3284: sub auto_instcode_format {
3285: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
3286: my $courses = '';
3287: my $homeserver;
3288: if ($caller eq 'global') {
1.584 raeburn 3289: foreach my $tryserver (keys %libserv) {
3290: if ($hostdom{$tryserver} eq $codedom) {
3291: $homeserver = $tryserver;
3292: last;
3293: }
3294: }
3295: if (($ENV{'user.name'}) && ($ENV{'user.domain'} eq $codedom)) {
3296: $homeserver = &homeserver($ENV{'user.name'},$codedom);
3297: }
1.521 raeburn 3298: } else {
3299: $homeserver = &homeserver($caller,$codedom);
3300: }
3301: foreach (keys %{$instcodes}) {
3302: $courses .= &escape($_).'='.&escape($$instcodes{$_}).'&';
3303: }
3304: chop($courses);
3305: my $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$homeserver);
3306: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
3307: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) = split/:/,$response;
3308: %{$codes} = &str2hash($codes_str);
3309: @{$codetitles} = &str2array($codetitles_str);
3310: %{$cat_titles} = &str2hash($cat_titles_str);
3311: %{$cat_order} = &str2hash($cat_order_str);
3312: return 'ok';
3313: }
3314: return $response;
3315: }
3316:
1.12 www 3317: # ------------------------------------------------------------------ Plain Text
3318:
3319: sub plaintext {
1.22 www 3320: my $short=shift;
1.414 www 3321: return &mt($prp{$short});
1.12 www 3322: }
3323:
3324: # ----------------------------------------------------------------- Assign Role
3325:
3326: sub assignrole {
1.357 www 3327: my ($udom,$uname,$url,$role,$end,$start,$deleteflag)=@_;
1.21 www 3328: my $mrole;
3329: if ($role =~ /^cr\//) {
1.393 www 3330: my $cwosec=$url;
3331: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
3332: unless (&allowed('ccr',$cwosec)) {
1.104 www 3333: &logthis('Refused custom assignrole: '.
3334: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
3335: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
3336: return 'refused';
3337: }
1.21 www 3338: $mrole='cr';
3339: } else {
1.82 www 3340: my $cwosec=$url;
1.83 www 3341: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.373 www 3342: unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) {
1.104 www 3343: &logthis('Refused assignrole: '.
3344: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
3345: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
3346: return 'refused';
3347: }
1.21 www 3348: $mrole=$role;
3349: }
3350: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
3351: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 3352: if ($end) { $command.='_'.$end; }
1.21 www 3353: if ($start) {
3354: if ($end) {
1.81 www 3355: $command.='_'.$start;
1.21 www 3356: } else {
1.81 www 3357: $command.='_0_'.$start;
1.21 www 3358: }
3359: }
1.357 www 3360: # actually delete
3361: if ($deleteflag) {
1.373 www 3362: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
1.357 www 3363: # modify command to delete the role
3364: $command="encrypt:rolesdel:$ENV{'user.domain'}:$ENV{'user.name'}:".
3365: "$udom:$uname:$url".'_'."$mrole";
1.373 www 3366: &logthis("$ENV{'user.name'} at $ENV{'user.domain'} deletes $mrole in $url for $uname at $udom");
1.357 www 3367: # set start and finish to negative values for userrolelog
3368: $start=-1;
3369: $end=-1;
3370: }
3371: }
3372: # send command
1.349 www 3373: my $answer=&reply($command,&homeserver($uname,$udom));
1.357 www 3374: # log new user role if status is ok
1.349 www 3375: if ($answer eq 'ok') {
3376: &userrolelog($mrole,$uname,$udom,$url,$start,$end);
3377: }
3378: return $answer;
1.169 harris41 3379: }
3380:
3381: # -------------------------------------------------- Modify user authentication
1.197 www 3382: # Overrides without validation
3383:
1.169 harris41 3384: sub modifyuserauth {
3385: my ($udom,$uname,$umode,$upass)=@_;
3386: my $uhome=&homeserver($uname,$udom);
1.197 www 3387: unless (&allowed('mau',$udom)) { return 'refused'; }
3388: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
1.272 matthew 3389: $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
3390: ' in domain '.$ENV{'request.role.domain'});
1.169 harris41 3391: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
3392: &escape($upass),$uhome);
1.197 www 3393: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
3394: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
3395: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
3396: &log($udom,,$uname,$uhome,
3397: 'Authentication changed by '.$ENV{'user.domain'}.', '.
3398: $ENV{'user.name'}.', '.$umode.
3399: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
1.169 harris41 3400: unless ($reply eq 'ok') {
1.197 www 3401: &logthis('Authentication mode error: '.$reply);
1.169 harris41 3402: return 'error: '.$reply;
3403: }
1.170 harris41 3404: return 'ok';
1.80 www 3405: }
3406:
1.81 www 3407: # --------------------------------------------------------------- Modify a user
1.80 www 3408:
1.81 www 3409: sub modifyuser {
1.206 matthew 3410: my ($udom, $uname, $uid,
3411: $umode, $upass, $first,
3412: $middle, $last, $gene,
1.387 www 3413: $forceid, $desiredhome, $email)=@_;
1.198 www 3414: $udom=~s/\W//g;
3415: $uname=~s/\W//g;
1.81 www 3416: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3417: $umode.', '.$first.', '.$middle.', '.
1.206 matthew 3418: $last.', '.$gene.'(forceid: '.$forceid.')'.
3419: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
3420: ' desiredhome not specified').
1.272 matthew 3421: ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}.
3422: ' in domain '.$ENV{'request.role.domain'});
1.230 stredwic 3423: my $uhome=&homeserver($uname,$udom,'true');
1.80 www 3424: # ----------------------------------------------------------------- Create User
1.406 albertel 3425: if (($uhome eq 'no_host') &&
3426: (($umode && $upass) || ($umode eq 'localauth'))) {
1.80 www 3427: my $unhome='';
1.209 matthew 3428: if (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) {
3429: $unhome = $desiredhome;
3430: } elsif($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1.80 www 3431: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.209 matthew 3432: } else { # load balancing routine for determining $unhome
1.80 www 3433: my $tryserver;
1.81 www 3434: my $loadm=10000000;
1.80 www 3435: foreach $tryserver (keys %libserv) {
3436: if ($hostdom{$tryserver} eq $udom) {
3437: my $answer=reply('load',$tryserver);
3438: if (($answer=~/\d+/) && ($answer<$loadm)) {
3439: $loadm=$answer;
3440: $unhome=$tryserver;
3441: }
3442: }
3443: }
3444: }
3445: if (($unhome eq '') || ($unhome eq 'no_host')) {
1.206 matthew 3446: return 'error: unable to find a home server for '.$uname.
3447: ' in domain '.$udom;
1.80 www 3448: }
3449: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
3450: &escape($upass),$unhome);
3451: unless ($reply eq 'ok') {
3452: return 'error: '.$reply;
3453: }
1.230 stredwic 3454: $uhome=&homeserver($uname,$udom,'true');
1.80 www 3455: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1.386 matthew 3456: return 'error: unable verify users home machine.';
1.80 www 3457: }
1.209 matthew 3458: } # End of creation of new user
1.80 www 3459: # ---------------------------------------------------------------------- Add ID
3460: if ($uid) {
3461: $uid=~tr/A-Z/a-z/;
3462: my %uidhash=&idrget($udom,$uname);
1.196 www 3463: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
3464: && (!$forceid)) {
1.80 www 3465: unless ($uid eq $uidhash{$uname}) {
1.386 matthew 3466: return 'error: user id "'.$uid.'" does not match '.
3467: 'current user id "'.$uidhash{$uname}.'".';
1.80 www 3468: }
3469: } else {
3470: &idput($udom,($uname => $uid));
3471: }
3472: }
3473: # -------------------------------------------------------------- Add names, etc
1.313 matthew 3474: my @tmp=&get('environment',
1.134 albertel 3475: ['firstname','middlename','lastname','generation'],
3476: $udom,$uname);
1.313 matthew 3477: my %names;
3478: if ($tmp[0] =~ m/^error:.*/) {
3479: %names=();
3480: } else {
3481: %names = @tmp;
3482: }
1.388 www 3483: #
3484: # Make sure to not trash student environment if instructor does not bother
3485: # to supply name and email information
3486: #
3487: if ($first) { $names{'firstname'} = $first; }
1.385 matthew 3488: if (defined($middle)) { $names{'middlename'} = $middle; }
1.388 www 3489: if ($last) { $names{'lastname'} = $last; }
1.385 matthew 3490: if (defined($gene)) { $names{'generation'} = $gene; }
1.592 www 3491: if ($email) {
3492: $email=~s/[^\w\@\.\-\,]//gs;
3493: if ($email=~/\@/) { $names{'notification'} = $email;
3494: $names{'critnotification'} = $email;
3495: $names{'permanentemail'} = $email; }
3496: }
1.134 albertel 3497: my $reply = &put('environment', \%names, $udom,$uname);
3498: if ($reply ne 'ok') { return 'error: '.$reply; }
1.81 www 3499: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 3500: $umode.', '.$first.', '.$middle.', '.
3501: $last.', '.$gene.' by '.
3502: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.134 albertel 3503: return 'ok';
1.80 www 3504: }
3505:
1.81 www 3506: # -------------------------------------------------------------- Modify student
1.80 www 3507:
1.81 www 3508: sub modifystudent {
3509: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1.515 raeburn 3510: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
1.455 albertel 3511: if (!$cid) {
3512: unless ($cid=$ENV{'request.course.id'}) {
3513: return 'not_in_class';
3514: }
1.80 www 3515: }
3516: # --------------------------------------------------------------- Make the user
1.81 www 3517: my $reply=&modifyuser
1.209 matthew 3518: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
1.387 www 3519: $desiredhome,$email);
1.80 www 3520: unless ($reply eq 'ok') { return $reply; }
1.297 matthew 3521: # This will cause &modify_student_enrollment to get the uid from the
3522: # students environment
3523: $uid = undef if (!$forceid);
1.455 albertel 3524: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
1.515 raeburn 3525: $gene,$usec,$end,$start,$type,$locktype,$cid);
1.297 matthew 3526: return $reply;
3527: }
3528:
3529: sub modify_student_enrollment {
1.515 raeburn 3530: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid) = @_;
1.455 albertel 3531: my ($cdom,$cnum,$chome);
3532: if (!$cid) {
3533: unless ($cid=$ENV{'request.course.id'}) {
3534: return 'not_in_class';
3535: }
3536: $cdom=$ENV{'course.'.$cid.'.domain'};
3537: $cnum=$ENV{'course.'.$cid.'.num'};
3538: } else {
3539: ($cdom,$cnum)=split(/_/,$cid);
3540: }
3541: $chome=$ENV{'course.'.$cid.'.home'};
3542: if (!$chome) {
1.457 raeburn 3543: $chome=&homeserver($cnum,$cdom);
1.297 matthew 3544: }
1.455 albertel 3545: if (!$chome) { return 'unknown_course'; }
1.297 matthew 3546: # Make sure the user exists
1.81 www 3547: my $uhome=&homeserver($uname,$udom);
3548: if (($uhome eq '') || ($uhome eq 'no_host')) {
3549: return 'error: no such user';
3550: }
1.297 matthew 3551: # Get student data if we were not given enough information
3552: if (!defined($first) || $first eq '' ||
3553: !defined($last) || $last eq '' ||
3554: !defined($uid) || $uid eq '' ||
3555: !defined($middle) || $middle eq '' ||
3556: !defined($gene) || $gene eq '') {
1.294 matthew 3557: # They did not supply us with enough data to enroll the student, so
3558: # we need to pick up more information.
1.297 matthew 3559: my %tmp = &get('environment',
1.294 matthew 3560: ['firstname','middlename','lastname', 'generation','id']
1.297 matthew 3561: ,$udom,$uname);
3562:
1.455 albertel 3563: #foreach (keys(%tmp)) {
3564: # &logthis("key $_ = ".$tmp{$_});
3565: #}
1.294 matthew 3566: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
3567: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
3568: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
1.297 matthew 3569: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
1.294 matthew 3570: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
3571: }
1.556 albertel 3572: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
1.487 albertel 3573: my $reply=cput('classlist',
3574: {"$uname:$udom" =>
1.515 raeburn 3575: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
1.487 albertel 3576: $cdom,$cnum);
1.81 www 3577: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
3578: return 'error: '.$reply;
3579: }
1.297 matthew 3580: # Add student role to user
1.83 www 3581: my $uurl='/'.$cid;
1.81 www 3582: $uurl=~s/\_/\//g;
3583: if ($usec) {
3584: $uurl.='/'.$usec;
3585: }
3586: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 3587: }
3588:
1.556 albertel 3589: sub format_name {
3590: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
3591: my $name;
3592: if ($first ne 'lastname') {
3593: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
3594: } else {
3595: if ($lastname=~/\S/) {
3596: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
3597: $name=~s/\s+,/,/;
3598: } else {
3599: $name.= $firstname.' '.$middlename.' '.$generation;
3600: }
3601: }
3602: $name=~s/^\s+//;
3603: $name=~s/\s+$//;
3604: $name=~s/\s+/ /g;
3605: return $name;
3606: }
3607:
1.84 www 3608: # ------------------------------------------------- Write to course preferences
3609:
3610: sub writecoursepref {
3611: my ($courseid,%prefs)=@_;
3612: $courseid=~s/^\///;
3613: $courseid=~s/\_/\//g;
3614: my ($cdomain,$cnum)=split(/\//,$courseid);
3615: my $chome=homeserver($cnum,$cdomain);
3616: if (($chome eq '') || ($chome eq 'no_host')) {
3617: return 'error: no such course';
3618: }
3619: my $cstring='';
1.191 harris41 3620: foreach (keys %prefs) {
1.84 www 3621: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1.191 harris41 3622: }
1.84 www 3623: $cstring=~s/\&$//;
3624: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
3625: }
3626:
3627: # ---------------------------------------------------------- Make/modify course
3628:
3629: sub createcourse {
1.571 raeburn 3630: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner)=@_;
1.84 www 3631: $url=&declutter($url);
3632: my $cid='';
1.264 matthew 3633: unless (&allowed('ccc',$udom)) {
1.84 www 3634: return 'refused';
3635: }
3636: # ------------------------------------------------------------------- Create ID
3637: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
3638: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
3639: # ----------------------------------------------- Make sure that does not exist
1.230 stredwic 3640: my $uhome=&homeserver($uname,$udom,'true');
1.84 www 3641: unless (($uhome eq '') || ($uhome eq 'no_host')) {
3642: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
3643: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1.230 stredwic 3644: $uhome=&homeserver($uname,$udom,'true');
1.84 www 3645: unless (($uhome eq '') || ($uhome eq 'no_host')) {
3646: return 'error: unable to generate unique course-ID';
3647: }
3648: }
1.264 matthew 3649: # ------------------------------------------------ Check supplied server name
3650: $course_server = $ENV{'user.homeserver'} if (! defined($course_server));
3651: if (! exists($libserv{$course_server})) {
3652: return 'error:bad server name '.$course_server;
3653: }
1.84 www 3654: # ------------------------------------------------------------- Make the course
3655: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1.264 matthew 3656: $course_server);
1.84 www 3657: unless ($reply eq 'ok') { return 'error: '.$reply; }
1.230 stredwic 3658: $uhome=&homeserver($uname,$udom,'true');
1.84 www 3659: if (($uhome eq '') || ($uhome eq 'no_host')) {
3660: return 'error: no such course';
3661: }
1.271 www 3662: # ----------------------------------------------------------------- Course made
1.516 raeburn 3663: # log existence
3664: &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
1.571 raeburn 3665: ':'.&escape($inst_code).':'.&escape($course_owner),$uhome);
1.358 www 3666: &flushcourselogs();
3667: # set toplevel url
1.271 www 3668: my $topurl=$url;
3669: unless ($nonstandard) {
3670: # ------------------------------------------ For standard courses, make top url
3671: my $mapurl=&clutter($url);
1.278 www 3672: if ($mapurl eq '/res/') { $mapurl=''; }
1.271 www 3673: $ENV{'form.initmap'}=(<<ENDINITMAP);
3674: <map>
3675: <resource id="1" type="start"></resource>
3676: <resource id="2" src="$mapurl"></resource>
3677: <resource id="3" type="finish"></resource>
3678: <link index="1" from="1" to="2"></link>
3679: <link index="2" from="2" to="3"></link>
3680: </map>
3681: ENDINITMAP
3682: $topurl=&declutter(
3683: &finishuserfileupload($uname,$udom,$uhome,'initmap','default.sequence')
3684: );
3685: }
3686: # ----------------------------------------------------------- Write preferences
1.84 www 3687: &writecoursepref($udom.'_'.$uname,
3688: ('description' => $description,
1.271 www 3689: 'url' => $topurl));
1.84 www 3690: return '/'.$udom.'/'.$uname;
3691: }
3692:
1.21 www 3693: # ---------------------------------------------------------- Assign Custom Role
3694:
3695: sub assigncustomrole {
1.357 www 3696: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
1.21 www 3697: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1.357 www 3698: $end,$start,$deleteflag);
1.21 www 3699: }
3700:
3701: # ----------------------------------------------------------------- Revoke Role
3702:
3703: sub revokerole {
1.357 www 3704: my ($udom,$uname,$url,$role,$deleteflag)=@_;
1.21 www 3705: my $now=time;
1.357 www 3706: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
1.21 www 3707: }
3708:
3709: # ---------------------------------------------------------- Revoke Custom Role
3710:
3711: sub revokecustomrole {
1.357 www 3712: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
1.21 www 3713: my $now=time;
1.357 www 3714: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
3715: $deleteflag);
1.17 www 3716: }
3717:
1.533 banghart 3718: # ------------------------------------------------------------ Disk usage
1.535 albertel 3719: sub diskusage {
1.533 banghart 3720: my ($udom,$uname,$directoryRoot)=@_;
3721: $directoryRoot =~ s/\/$//;
1.535 albertel 3722: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
1.514 albertel 3723: return $listing;
1.512 banghart 3724: }
3725:
1.566 banghart 3726: sub is_locked {
3727: my ($file_name, $domain, $user) = @_;
3728: my @check;
3729: my $is_locked;
3730: push @check, $file_name;
1.613 albertel 3731: my %locked = &get('file_permissions',\@check,
3732: $ENV{'user.domain'},$ENV{'user.name'});
1.615 albertel 3733: my ($tmp)=keys(%locked);
3734: if ($tmp=~/^error:/) { undef(%locked); }
1.613 albertel 3735:
1.566 banghart 3736: if (ref($locked{$file_name}) eq 'ARRAY') {
3737: $is_locked = 'true';
3738: } else {
3739: $is_locked = 'false';
3740: }
3741: }
3742:
1.559 banghart 3743: # ------------------------------------------------------------- Mark as Read Only
3744:
3745: sub mark_as_readonly {
3746: my ($domain,$user,$files,$what) = @_;
1.613 albertel 3747: my %current_permissions = &dump('file_permissions',$domain,$user);
1.615 albertel 3748: my ($tmp)=keys(%current_permissions);
3749: if ($tmp=~/^error:/) { undef(%current_permissions); }
1.613 albertel 3750:
1.560 banghart 3751: foreach my $file (@{$files}) {
1.561 banghart 3752: push(@{$current_permissions{$file}},$what);
1.559 banghart 3753: }
1.613 albertel 3754: &put('file_permissions',\%current_permissions,$domain,$user);
1.559 banghart 3755: return;
3756: }
3757:
1.572 banghart 3758: # ------------------------------------------------------------Save Selected Files
3759:
3760: sub save_selected_files {
3761: my ($user, $path, @files) = @_;
3762: my $filename = $user."savedfiles";
1.573 banghart 3763: my @other_files = &files_not_in_path($user, $path);
1.574 banghart 3764: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
1.573 banghart 3765: foreach my $file (@files) {
1.574 banghart 3766: print (OUT $ENV{'form.currentpath'}.$file."\n");
1.573 banghart 3767: }
3768: foreach my $file (@other_files) {
1.574 banghart 3769: print (OUT $file."\n");
1.572 banghart 3770: }
1.574 banghart 3771: close (OUT);
1.572 banghart 3772: return 'ok';
3773: }
3774:
1.574 banghart 3775: sub clear_selected_files {
3776: my ($user) = @_;
3777: my $filename = $user."savedfiles";
3778: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
3779: print (OUT undef);
3780: close (OUT);
3781: return ("ok");
3782: }
3783:
1.572 banghart 3784: sub files_in_path {
3785: my ($user, $path) = @_;
3786: my $filename = $user."savedfiles";
3787: my %return_files;
1.574 banghart 3788: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
1.573 banghart 3789: while (my $line_in = <IN>) {
1.574 banghart 3790: chomp ($line_in);
3791: my @paths_and_file = split (m!/!, $line_in);
3792: my $file_part = pop (@paths_and_file);
3793: my $path_part = join ('/', @paths_and_file);
1.573 banghart 3794: $path_part.='/';
3795: my $path_and_file = $path_part.$file_part;
3796: if ($path_part eq $path) {
3797: $return_files{$file_part}= 'selected';
3798: }
3799: }
1.574 banghart 3800: close (IN);
3801: return (\%return_files);
1.572 banghart 3802: }
3803:
3804: # called in portfolio select mode, to show files selected NOT in current directory
3805: sub files_not_in_path {
3806: my ($user, $path) = @_;
3807: my $filename = $user."savedfiles";
3808: my @return_files;
3809: my $path_part;
1.574 banghart 3810: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
1.572 banghart 3811: while (<IN>) {
3812: #ok, I know it's clunky, but I want it to work
3813: my @paths_and_file = split m!/!, $_;
1.574 banghart 3814: my $file_part = pop (@paths_and_file);
3815: chomp ($file_part);
3816: my $path_part = join ('/', @paths_and_file);
1.572 banghart 3817: $path_part .= '/';
3818: my $path_and_file = $path_part.$file_part;
3819: if ($path_part ne $path) {
1.574 banghart 3820: push (@return_files, ($path_and_file));
1.572 banghart 3821: }
3822: }
1.574 banghart 3823: close (OUT);
3824: return (@return_files);
1.572 banghart 3825: }
3826:
1.561 banghart 3827: #--------------------------------------------------------------Get Marked as Read Only
3828:
3829: sub get_marked_as_readonly {
3830: my ($domain,$user,$what) = @_;
1.613 albertel 3831: my %current_permissions = &dump('file_permissions',$domain,$user);
1.615 albertel 3832: my ($tmp)=keys(%current_permissions);
3833: if ($tmp=~/^error:/) { undef(%current_permissions); }
1.613 albertel 3834:
1.563 banghart 3835: my @readonly_files;
3836: while (my ($file_name,$value) = each(%current_permissions)) {
1.561 banghart 3837: if (ref($value) eq "ARRAY"){
3838: foreach my $stored_what (@{$value}) {
3839: if ($stored_what eq $what) {
3840: push(@readonly_files, $file_name);
1.563 banghart 3841: } elsif (!defined($what)) {
3842: push(@readonly_files, $file_name);
1.561 banghart 3843: }
3844: }
3845: }
3846: }
3847: return @readonly_files;
3848: }
1.577 banghart 3849: #-----------------------------------------------------------Get Marked as Read Only Hash
1.561 banghart 3850:
1.577 banghart 3851: sub get_marked_as_readonly_hash {
3852: my ($domain,$user,$what) = @_;
1.613 albertel 3853: my %current_permissions = &dump('file_permissions',$domain,$user);
1.615 albertel 3854: my ($tmp)=keys(%current_permissions);
3855: if ($tmp=~/^error:/) { undef(%current_permissions); }
1.613 albertel 3856:
1.577 banghart 3857: my %readonly_files;
3858: while (my ($file_name,$value) = each(%current_permissions)) {
3859: if (ref($value) eq "ARRAY"){
3860: foreach my $stored_what (@{$value}) {
3861: if ($stored_what eq $what) {
3862: $readonly_files{$file_name} = 'locked';
3863: } elsif (!defined($what)) {
3864: $readonly_files{$file_name} = 'locked';
3865: }
3866: }
3867: }
3868: }
3869: return %readonly_files;
3870: }
1.559 banghart 3871: # ------------------------------------------------------------ Unmark as Read Only
3872:
3873: sub unmark_as_readonly {
1.561 banghart 3874: # unmarks all files locked by $what
3875: # for portfolio submissions, $what contains $crsid and $symb
3876: my ($domain,$user,$what) = @_;
1.613 albertel 3877: my %current_permissions = &dump('file_permissions',$domain,$user);
1.615 albertel 3878: my ($tmp)=keys(%current_permissions);
3879: if ($tmp=~/^error:/) { undef(%current_permissions); }
1.613 albertel 3880:
3881: my @readonly_files = &get_marked_as_readonly($domain,$user,$what);
1.561 banghart 3882: foreach my $file(@readonly_files){
1.563 banghart 3883: my $current_locks = $current_permissions{$file};
3884: my @new_locks;
3885: my @del_keys;
3886: if (ref($current_locks) eq "ARRAY"){
3887: foreach my $locker (@{$current_locks}) {
3888: unless ($locker eq $what) {
3889: push(@new_locks, $what);
3890: }
3891: }
3892: if (@new_locks > 0) {
3893: $current_permissions{$file} = \@new_locks;
3894: } else {
3895: push(@del_keys, $file);
1.613 albertel 3896: &del('file_permissions',\@del_keys, $domain, $user);
1.563 banghart 3897: delete $current_permissions{$file};
3898: }
3899: }
1.561 banghart 3900: }
1.613 albertel 3901: &put('file_permissions',\%current_permissions,$domain,$user);
1.559 banghart 3902: return;
3903: }
1.512 banghart 3904:
1.17 www 3905: # ------------------------------------------------------------ Directory lister
3906:
3907: sub dirlist {
1.253 stredwic 3908: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
3909:
1.18 www 3910: $uri=~s/^\///;
3911: $uri=~s/\/$//;
1.253 stredwic 3912: my ($udom, $uname);
3913: (undef,$udom,$uname)=split(/\//,$uri);
3914: if(defined($userdomain)) {
3915: $udom = $userdomain;
3916: }
3917: if(defined($username)) {
3918: $uname = $username;
3919: }
3920:
3921: my $dirRoot = $perlvar{'lonDocRoot'};
3922: if(defined($alternateDirectoryRoot)) {
3923: $dirRoot = $alternateDirectoryRoot;
3924: $dirRoot =~ s/\/$//;
3925: }
3926:
3927: if($udom) {
3928: if($uname) {
1.605 matthew 3929: my $listing=reply('ls2:'.$dirRoot.'/'.$uri,
1.253 stredwic 3930: homeserver($uname,$udom));
1.605 matthew 3931: my @listing_results;
3932: if ($listing eq 'unknown_cmd') {
3933: $listing=reply('ls:'.$dirRoot.'/'.$uri,
3934: homeserver($uname,$udom));
3935: @listing_results = split(/:/,$listing);
3936: } else {
3937: @listing_results = map { &unescape($_); } split(/:/,$listing);
3938: }
3939: return @listing_results;
1.253 stredwic 3940: } elsif(!defined($alternateDirectoryRoot)) {
3941: my $tryserver;
3942: my %allusers=();
3943: foreach $tryserver (keys %libserv) {
3944: if($hostdom{$tryserver} eq $udom) {
1.605 matthew 3945: my $listing=reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
1.253 stredwic 3946: $udom, $tryserver);
1.605 matthew 3947: my @listing_results;
3948: if ($listing eq 'unknown_cmd') {
3949: $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
3950: $udom, $tryserver);
3951: @listing_results = split(/:/,$listing);
3952: } else {
3953: @listing_results =
3954: map { &unescape($_); } split(/:/,$listing);
3955: }
3956: if ($listing_results[0] ne 'no_such_dir' &&
3957: $listing_results[0] ne 'empty' &&
3958: $listing_results[0] ne 'con_lost') {
3959: foreach (@listing_results) {
1.253 stredwic 3960: my ($entry,@stat)=split(/&/,$_);
3961: $allusers{$entry}=1;
3962: }
3963: }
1.191 harris41 3964: }
1.253 stredwic 3965: }
3966: my $alluserstr='';
3967: foreach (sort keys %allusers) {
3968: $alluserstr.=$_.'&user:';
3969: }
3970: $alluserstr=~s/:$//;
3971: return split(/:/,$alluserstr);
3972: } else {
3973: my @emptyResults = ();
3974: push(@emptyResults, 'missing user name');
3975: return split(':',@emptyResults);
3976: }
3977: } elsif(!defined($alternateDirectoryRoot)) {
3978: my $tryserver;
3979: my %alldom=();
3980: foreach $tryserver (keys %libserv) {
3981: $alldom{$hostdom{$tryserver}}=1;
3982: }
3983: my $alldomstr='';
3984: foreach (sort keys %alldom) {
1.397 albertel 3985: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'/&domain:';
1.253 stredwic 3986: }
3987: $alldomstr=~s/:$//;
3988: return split(/:/,$alldomstr);
3989: } else {
3990: my @emptyResults = ();
3991: push(@emptyResults, 'missing domain');
3992: return split(':',@emptyResults);
1.275 stredwic 3993: }
3994: }
3995:
3996: # --------------------------------------------- GetFileTimestamp
3997: # This function utilizes dirlist and returns the date stamp for
3998: # when it was last modified. It will also return an error of -1
3999: # if an error occurs
4000:
1.410 matthew 4001: ##
4002: ## FIXME: This subroutine assumes its caller knows something about the
4003: ## directory structure of the home server for the student ($root).
4004: ## Not a good assumption to make. Since this is for looking up files
4005: ## in user directories, the full path should be constructed by lond, not
4006: ## whatever machine we request data from.
4007: ##
1.275 stredwic 4008: sub GetFileTimestamp {
4009: my ($studentDomain,$studentName,$filename,$root)=@_;
4010: $studentDomain=~s/\W//g;
4011: $studentName=~s/\W//g;
4012: my $subdir=$studentName.'__';
4013: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
4014: my $proname="$studentDomain/$subdir/$studentName";
4015: $proname .= '/'.$filename;
1.375 matthew 4016: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
4017: $studentName, $root);
1.275 stredwic 4018: my @stats = split('&', $fileStat);
4019: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
1.375 matthew 4020: # @stats contains first the filename, then the stat output
4021: return $stats[10]; # so this is 10 instead of 9.
1.275 stredwic 4022: } else {
4023: return -1;
1.253 stredwic 4024: }
1.26 www 4025: }
4026:
4027: # -------------------------------------------------------- Value of a Condition
4028:
1.40 www 4029: sub directcondval {
4030: my $number=shift;
1.555 albertel 4031: if (!defined($ENV{'user.state.'.$ENV{'request.course.id'}})) {
4032: &Apache::lonuserstate::evalstate();
4033: }
1.40 www 4034: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
4035: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
4036: } else {
4037: return 2;
4038: }
4039: }
4040:
1.26 www 4041: sub condval {
4042: my $condidx=shift;
4043: my $result=0;
1.54 www 4044: my $allpathcond='';
1.191 harris41 4045: foreach (split(/\|/,$condidx)) {
1.54 www 4046: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
4047: $allpathcond.=
4048: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
4049: }
1.191 harris41 4050: }
1.54 www 4051: $allpathcond=~s/\|$//;
1.33 www 4052: if ($ENV{'request.course.id'}) {
1.54 www 4053: if ($allpathcond) {
1.26 www 4054: my $operand='|';
4055: my @stack;
1.191 harris41 4056: foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {
1.26 www 4057: if ($_ eq '(') {
4058: push @stack,($operand,$result)
4059: } elsif ($_ eq ')') {
4060: my $before=pop @stack;
4061: if (pop @stack eq '&') {
4062: $result=$result>$before?$before:$result;
4063: } else {
4064: $result=$result>$before?$result:$before;
4065: }
4066: } elsif (($_ eq '&') || ($_ eq '|')) {
4067: $operand=$_;
4068: } else {
1.40 www 4069: my $new=directcondval($_);
1.26 www 4070: if ($operand eq '&') {
4071: $result=$result>$new?$new:$result;
4072: } else {
4073: $result=$result>$new?$result:$new;
1.191 harris41 4074: }
1.26 www 4075: }
1.191 harris41 4076: }
1.26 www 4077: }
4078: }
4079: return $result;
1.421 albertel 4080: }
4081:
4082: # ---------------------------------------------------- Devalidate courseresdata
4083:
4084: sub devalidatecourseresdata {
4085: my ($coursenum,$coursedomain)=@_;
4086: my $hashid=$coursenum.':'.$coursedomain;
1.599 albertel 4087: &devalidate_cache_new('courseres',$hashid);
1.28 www 4088: }
4089:
1.200 www 4090: # --------------------------------------------------- Course Resourcedata Query
4091:
4092: sub courseresdata {
4093: my ($coursenum,$coursedomain,@which)=@_;
4094: my $coursehom=&homeserver($coursenum,$coursedomain);
4095: my $hashid=$coursenum.':'.$coursedomain;
1.599 albertel 4096: my ($result,$cached)=&is_cached_new('courseres',$hashid);
1.417 albertel 4097: unless (defined($cached)) {
1.251 albertel 4098: my %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
1.417 albertel 4099: $result=\%dumpreply;
1.251 albertel 4100: my ($tmp) = keys(%dumpreply);
4101: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
1.599 albertel 4102: &do_cache_new('courseres',$hashid,$result,600);
1.306 albertel 4103: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
4104: return $tmp;
1.416 albertel 4105: } elsif ($tmp =~ /^(error)/) {
1.417 albertel 4106: $result=undef;
1.599 albertel 4107: &do_cache_new('courseres',$hashid,$result,600);
1.250 albertel 4108: }
4109: }
1.251 albertel 4110: foreach my $item (@which) {
1.417 albertel 4111: if (defined($result->{$item})) {
4112: return $result->{$item};
1.251 albertel 4113: }
1.250 albertel 4114: }
1.291 albertel 4115: return undef;
1.200 www 4116: }
4117:
1.379 matthew 4118: #
4119: # EXT resource caching routines
4120: #
4121:
4122: sub clear_EXT_cache_status {
1.383 albertel 4123: &delenv('cache.EXT.');
1.379 matthew 4124: }
4125:
4126: sub EXT_cache_status {
4127: my ($target_domain,$target_user) = @_;
1.383 albertel 4128: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.389 www 4129: if (exists($ENV{$cachename}) && ($ENV{$cachename}+600) > time) {
1.379 matthew 4130: # We know already the user has no data
4131: return 1;
4132: } else {
4133: return 0;
4134: }
4135: }
4136:
4137: sub EXT_cache_set {
4138: my ($target_domain,$target_user) = @_;
1.383 albertel 4139: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
1.379 matthew 4140: &appenv($cachename => time);
4141: }
4142:
1.28 www 4143: # --------------------------------------------------------- Value of a Variable
1.58 www 4144: sub EXT {
1.395 albertel 4145: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
1.218 albertel 4146:
1.68 www 4147: unless ($varname) { return ''; }
1.218 albertel 4148: #get real user name/domain, courseid and symb
4149: my $courseid;
1.359 albertel 4150: my $publicuser;
1.427 www 4151: if ($symbparm) {
4152: $symbparm=&get_symb_from_alias($symbparm);
4153: }
1.218 albertel 4154: if (!($uname && $udom)) {
1.360 albertel 4155: (my $cursymb,$courseid,$udom,$uname,$publicuser)=
1.378 matthew 4156: &Apache::lonxml::whichuser($symbparm);
1.218 albertel 4157: if (!$symbparm) { $symbparm=$cursymb; }
4158: } else {
4159: $courseid=$ENV{'request.course.id'};
4160: }
1.48 www 4161: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
4162: my $rest;
1.320 albertel 4163: if (defined($therest[0])) {
1.48 www 4164: $rest=join('.',@therest);
4165: } else {
4166: $rest='';
4167: }
1.320 albertel 4168:
1.57 www 4169: my $qualifierrest=$qualifier;
4170: if ($rest) { $qualifierrest.='.'.$rest; }
4171: my $spacequalifierrest=$space;
4172: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 4173: if ($realm eq 'user') {
1.48 www 4174: # --------------------------------------------------------------- user.resource
4175: if ($space eq 'resource') {
1.335 albertel 4176: if (defined($Apache::lonhomework::parsing_a_problem)) {
4177: return $Apache::lonhomework::history{$qualifierrest};
4178: } else {
1.359 albertel 4179: my %restored;
4180: if ($publicuser || $ENV{'request.state'} eq 'construct') {
4181: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
4182: } else {
4183: %restored=&restore($symbparm,$courseid,$udom,$uname);
4184: }
1.335 albertel 4185: return $restored{$qualifierrest};
4186: }
1.48 www 4187: # ----------------------------------------------------------------- user.access
4188: } elsif ($space eq 'access') {
1.218 albertel 4189: # FIXME - not supporting calls for a specific user
1.48 www 4190: return &allowed($qualifier,$rest);
4191: # ------------------------------------------ user.preferences, user.environment
4192: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.218 albertel 4193: if (($uname eq $ENV{'user.name'}) &&
4194: ($udom eq $ENV{'user.domain'})) {
4195: return $ENV{join('.',('environment',$qualifierrest))};
4196: } else {
1.359 albertel 4197: my %returnhash;
4198: if (!$publicuser) {
4199: %returnhash=&userenvironment($udom,$uname,
4200: $qualifierrest);
4201: }
1.218 albertel 4202: return $returnhash{$qualifierrest};
4203: }
1.48 www 4204: # ----------------------------------------------------------------- user.course
4205: } elsif ($space eq 'course') {
1.218 albertel 4206: # FIXME - not supporting calls for a specific user
1.48 www 4207: return $ENV{join('.',('request.course',$qualifier))};
4208: # ------------------------------------------------------------------- user.role
4209: } elsif ($space eq 'role') {
1.218 albertel 4210: # FIXME - not supporting calls for a specific user
1.48 www 4211: my ($role,$where)=split(/\./,$ENV{'request.role'});
4212: if ($qualifier eq 'value') {
4213: return $role;
4214: } elsif ($qualifier eq 'extent') {
4215: return $where;
4216: }
4217: # ----------------------------------------------------------------- user.domain
4218: } elsif ($space eq 'domain') {
1.218 albertel 4219: return $udom;
1.48 www 4220: # ------------------------------------------------------------------- user.name
4221: } elsif ($space eq 'name') {
1.218 albertel 4222: return $uname;
1.48 www 4223: # ---------------------------------------------------- Any other user namespace
1.29 www 4224: } else {
1.359 albertel 4225: my %reply;
4226: if (!$publicuser) {
4227: %reply=&get($space,[$qualifierrest],$udom,$uname);
4228: }
4229: return $reply{$qualifierrest};
1.48 www 4230: }
1.236 www 4231: } elsif ($realm eq 'query') {
4232: # ---------------------------------------------- pull stuff out of query string
1.384 albertel 4233: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
4234: [$spacequalifierrest]);
1.376 albertel 4235: return $ENV{'form.'.$spacequalifierrest};
1.236 www 4236: } elsif ($realm eq 'request') {
1.48 www 4237: # ------------------------------------------------------------- request.browser
4238: if ($space eq 'browser') {
1.430 www 4239: if ($qualifier eq 'textremote') {
4240: if (&mt('textual_remote_display') eq 'on') {
4241: return 1;
4242: } else {
4243: return 0;
4244: }
4245: } else {
4246: return $ENV{'browser.'.$qualifier};
4247: }
1.57 www 4248: # ------------------------------------------------------------ request.filename
4249: } else {
4250: return $ENV{'request.'.$spacequalifierrest};
1.29 www 4251: }
1.28 www 4252: } elsif ($realm eq 'course') {
1.48 www 4253: # ---------------------------------------------------------- course.description
1.218 albertel 4254: return $ENV{'course.'.$courseid.'.'.$spacequalifierrest};
1.57 www 4255: } elsif ($realm eq 'resource') {
1.165 www 4256:
1.395 albertel 4257: my $section;
1.359 albertel 4258: if (defined($courseid) && $courseid eq $ENV{'request.course.id'}) {
1.539 albertel 4259: if (!$symbparm) { $symbparm=&symbread(); }
4260: }
1.593 albertel 4261: my ($courselevelm,$courselevel);
1.539 albertel 4262: if ($symbparm && defined($courseid) &&
4263: $courseid eq $ENV{'request.course.id'}) {
1.165 www 4264:
1.218 albertel 4265: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
1.165 www 4266:
1.60 www 4267: # ----------------------------------------------------- Cascading lookup scheme
1.218 albertel 4268: my $symbp=$symbparm;
1.409 www 4269: my $mapp=(&decode_symb($symbp))[0];
1.218 albertel 4270:
4271: my $symbparm=$symbp.'.'.$spacequalifierrest;
4272: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
4273:
4274: if (($ENV{'user.name'} eq $uname) &&
4275: ($ENV{'user.domain'} eq $udom)) {
1.255 albertel 4276: $section=$ENV{'request.course.sec'};
1.218 albertel 4277: } else {
1.539 albertel 4278: if (! defined($usection)) {
1.551 albertel 4279: $section=&getsection($udom,$uname,$courseid);
1.539 albertel 4280: } else {
4281: $section = $usection;
4282: }
1.218 albertel 4283: }
4284:
4285: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
4286: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
4287: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
4288:
1.593 albertel 4289: $courselevel=$courseid.'.'.$spacequalifierrest;
1.218 albertel 4290: my $courselevelr=$courseid.'.'.$symbparm;
1.593 albertel 4291: $courselevelm=$courseid.'.'.$mapparm;
1.69 www 4292:
1.60 www 4293: # ----------------------------------------------------------- first, check user
1.379 matthew 4294: #most student don\'t have any data set, check if there is some data
4295: if (! &EXT_cache_status($udom,$uname)) {
1.420 albertel 4296: my $hashid="$udom:$uname";
1.599 albertel 4297: my ($result,$cached)=&is_cached_new('userres',$hashid);
1.454 albertel 4298: if (!defined($cached)) {
4299: my %resourcedata=&dump('resourcedata',$udom,$uname);
1.420 albertel 4300: $result=\%resourcedata;
1.599 albertel 4301: &do_cache_new('userres',$hashid,$result);
1.420 albertel 4302: }
4303: my ($tmp)=keys(%$result);
1.308 albertel 4304: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
1.420 albertel 4305: if ($$result{$courselevelr}) {
4306: return $$result{$courselevelr}; }
4307: if ($$result{$courselevelm}) {
4308: return $$result{$courselevelm}; }
4309: if ($$result{$courselevel}) {
4310: return $$result{$courselevel}; }
1.308 albertel 4311: } else {
1.459 albertel 4312: #error 2 occurs when the .db doesn't exist
4313: if ($tmp!~/error: 2 /) {
1.308 albertel 4314: &logthis("<font color=blue>WARNING:".
4315: " Trying to get resource data for ".
4316: $uname." at ".$udom.": ".
4317: $tmp."</font>");
1.459 albertel 4318: } elsif ($tmp=~/error: 2 /) {
1.539 albertel 4319: &EXT_cache_set($udom,$uname);
1.308 albertel 4320: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
4321: return $tmp;
4322: }
1.218 albertel 4323: }
4324: }
1.95 www 4325:
1.594 albertel 4326: # ------------------------------------------------ second, check some of course
1.96 www 4327:
1.218 albertel 4328: my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},
1.539 albertel 4329: $ENV{'course.'.$courseid.'.domain'},
4330: ($seclevelr,$seclevelm,$seclevel,
1.593 albertel 4331: $courselevelr));
1.287 albertel 4332: if (defined($coursereply)) { return $coursereply; }
1.200 www 4333:
1.60 www 4334: # ------------------------------------------------------ third, check map parms
1.218 albertel 4335: my %parmhash=();
4336: my $thisparm='';
4337: if (tie(%parmhash,'GDBM_File',
4338: $ENV{'request.course.fn'}.'_parms.db',
1.256 albertel 4339: &GDBM_READER(),0640)) {
1.218 albertel 4340: $thisparm=$parmhash{$symbparm};
4341: untie(%parmhash);
4342: }
4343: if ($thisparm) { return $thisparm; }
4344: }
1.594 albertel 4345: # ------------------------------------------ fourth, look in resource metadata
1.71 www 4346:
1.218 albertel 4347: $spacequalifierrest=~s/\./\_/;
1.282 albertel 4348: my $filename;
4349: if (!$symbparm) { $symbparm=&symbread(); }
4350: if ($symbparm) {
1.409 www 4351: $filename=(&decode_symb($symbparm))[2];
1.282 albertel 4352: } else {
4353: $filename=$ENV{'request.filename'};
4354: }
4355: my $metadata=&metadata($filename,$spacequalifierrest);
1.288 albertel 4356: if (defined($metadata)) { return $metadata; }
1.282 albertel 4357: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
1.288 albertel 4358: if (defined($metadata)) { return $metadata; }
1.142 www 4359:
1.594 albertel 4360: # ---------------------------------------------- fourth, look in rest pf course
1.593 albertel 4361: if ($symbparm && defined($courseid) &&
4362: $courseid eq $ENV{'request.course.id'}) {
4363: my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},
4364: $ENV{'course.'.$courseid.'.domain'},
4365: ($courselevelm,$courselevel));
4366: if (defined($coursereply)) { return $coursereply; }
4367: }
1.145 www 4368: # ------------------------------------------------------------------ Cascade up
1.218 albertel 4369: unless ($space eq '0') {
1.336 albertel 4370: my @parts=split(/_/,$space);
4371: my $id=pop(@parts);
4372: my $part=join('_',@parts);
4373: if ($part eq '') { $part='0'; }
4374: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
1.395 albertel 4375: $symbparm,$udom,$uname,$section,1);
1.337 albertel 4376: if (defined($partgeneral)) { return $partgeneral; }
1.218 albertel 4377: }
1.395 albertel 4378: if ($recurse) { return undef; }
4379: my $pack_def=&packages_tab_default($filename,$varname);
4380: if (defined($pack_def)) { return $pack_def; }
1.71 www 4381:
1.48 www 4382: # ---------------------------------------------------- Any other user namespace
4383: } elsif ($realm eq 'environment') {
4384: # ----------------------------------------------------------------- environment
1.219 albertel 4385: if (($uname eq $ENV{'user.name'})&&($udom eq $ENV{'user.domain'})) {
4386: return $ENV{'environment.'.$spacequalifierrest};
4387: } else {
4388: my %returnhash=&userenvironment($udom,$uname,
4389: $spacequalifierrest);
4390: return $returnhash{$spacequalifierrest};
4391: }
1.28 www 4392: } elsif ($realm eq 'system') {
1.48 www 4393: # ----------------------------------------------------------------- system.time
4394: if ($space eq 'time') {
4395: return time;
4396: }
1.28 www 4397: }
1.48 www 4398: return '';
1.61 www 4399: }
4400:
1.395 albertel 4401: sub packages_tab_default {
4402: my ($uri,$varname)=@_;
4403: my (undef,$part,$name)=split(/\./,$varname);
4404: my $packages=&metadata($uri,'packages');
4405: foreach my $package (split(/,/,$packages)) {
4406: my ($pack_type,$pack_part)=split(/_/,$package,2);
1.468 albertel 4407: if (defined($packagetab{"$pack_type&$name&default"})) {
4408: return $packagetab{"$pack_type&$name&default"};
4409: }
1.585 albertel 4410: if ($pack_type eq 'part') { $pack_part='0'; }
1.468 albertel 4411: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
4412: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
1.395 albertel 4413: }
4414: }
4415: return undef;
4416: }
4417:
1.334 albertel 4418: sub add_prefix_and_part {
4419: my ($prefix,$part)=@_;
4420: my $keyroot;
4421: if (defined($prefix) && $prefix !~ /^__/) {
4422: # prefix that has a part already
4423: $keyroot=$prefix;
4424: } elsif (defined($prefix)) {
4425: # prefix that is missing a part
4426: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
4427: } else {
4428: # no prefix at all
4429: if (defined($part)) { $keyroot='_'.$part; }
4430: }
4431: return $keyroot;
4432: }
4433:
1.71 www 4434: # ---------------------------------------------------------------- Get metadata
4435:
1.599 albertel 4436: my %metaentry;
1.71 www 4437: sub metadata {
1.176 www 4438: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
1.71 www 4439: $uri=&declutter($uri);
1.288 albertel 4440: # if it is a non metadata possible uri return quickly
1.529 albertel 4441: if (($uri eq '') ||
4442: (($uri =~ m|^/*adm/|) &&
4443: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
1.423 albertel 4444: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
1.489 albertel 4445: ($uri =~ m|home/[^/]+/public_html/|)) {
1.468 albertel 4446: return undef;
1.288 albertel 4447: }
1.73 www 4448: my $filename=$uri;
4449: $uri=~s/\.meta$//;
1.172 www 4450: #
4451: # Is the metadata already cached?
1.177 www 4452: # Look at timestamp of caching
1.172 www 4453: # Everything is cached by the main uri, libraries are never directly cached
4454: #
1.428 albertel 4455: if (!defined($liburi)) {
1.599 albertel 4456: my ($result,$cached)=&is_cached_new('meta',$uri);
1.428 albertel 4457: if (defined($cached)) { return $result->{':'.$what}; }
4458: }
4459: {
1.172 www 4460: #
4461: # Is this a recursive call for a library?
4462: #
1.599 albertel 4463: # if (! exists($metacache{$uri})) {
4464: # $metacache{$uri}={};
4465: # }
1.171 www 4466: if ($liburi) {
4467: $liburi=&declutter($liburi);
4468: $filename=$liburi;
1.401 bowersj2 4469: } else {
1.599 albertel 4470: &devalidate_cache_new('meta',$uri);
4471: undef(%metaentry);
1.401 bowersj2 4472: }
1.140 www 4473: my %metathesekeys=();
1.73 www 4474: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
1.489 albertel 4475: my $metastring;
1.609 banghart 4476: if ($uri !~ m -^(uploaded|editupload)/-) {
1.543 albertel 4477: my $file=&filelocation('',&clutter($filename));
1.599 albertel 4478: #push(@{$metaentry{$uri.'.file'}},$file);
1.543 albertel 4479: $metastring=&getfile($file);
1.489 albertel 4480: }
1.208 albertel 4481: my $parser=HTML::LCParser->new(\$metastring);
1.71 www 4482: my $token;
1.140 www 4483: undef %metathesekeys;
1.71 www 4484: while ($token=$parser->get_token) {
1.339 albertel 4485: if ($token->[0] eq 'S') {
4486: if (defined($token->[2]->{'package'})) {
1.172 www 4487: #
4488: # This is a package - get package info
4489: #
1.339 albertel 4490: my $package=$token->[2]->{'package'};
4491: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
4492: if (defined($token->[2]->{'id'})) {
4493: $keyroot.='_'.$token->[2]->{'id'};
4494: }
1.599 albertel 4495: if ($metaentry{':packages'}) {
4496: $metaentry{':packages'}.=','.$package.$keyroot;
1.339 albertel 4497: } else {
1.599 albertel 4498: $metaentry{':packages'}=$package.$keyroot;
1.339 albertel 4499: }
1.613 albertel 4500: foreach (sort keys %packagetab) {
1.432 albertel 4501: my $part=$keyroot;
4502: $part=~s/^\_//;
4503: if ($_=~/^\Q$package\E\&/ ||
4504: $_=~/^\Q$package\E_0\&/) {
1.339 albertel 4505: my ($pack,$name,$subp)=split(/\&/,$_);
1.395 albertel 4506: # ignore package.tab specified default values
4507: # here &package_tab_default() will fetch those
4508: if ($subp eq 'default') { next; }
1.339 albertel 4509: my $value=$packagetab{$_};
1.432 albertel 4510: my $unikey;
4511: if ($pack =~ /_0$/) {
4512: $unikey='parameter_0_'.$name;
4513: $part=0;
4514: } else {
4515: $unikey='parameter'.$keyroot.'_'.$name;
4516: }
1.339 albertel 4517: if ($subp eq 'display') {
4518: $value.=' [Part: '.$part.']';
4519: }
1.599 albertel 4520: $metaentry{':'.$unikey.'.part'}=$part;
1.395 albertel 4521: $metathesekeys{$unikey}=1;
1.599 albertel 4522: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
4523: $metaentry{':'.$unikey.'.'.$subp}=$value;
1.339 albertel 4524: }
1.599 albertel 4525: if (defined($metaentry{':'.$unikey.'.default'})) {
4526: $metaentry{':'.$unikey}=
4527: $metaentry{':'.$unikey.'.default'};
1.356 albertel 4528: }
1.339 albertel 4529: }
4530: }
4531: } else {
1.172 www 4532: #
4533: # This is not a package - some other kind of start tag
1.339 albertel 4534: #
4535: my $entry=$token->[1];
4536: my $unikey;
4537: if ($entry eq 'import') {
4538: $unikey='';
4539: } else {
4540: $unikey=$entry;
4541: }
4542: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
4543:
4544: if (defined($token->[2]->{'id'})) {
4545: $unikey.='_'.$token->[2]->{'id'};
4546: }
1.175 www 4547:
1.339 albertel 4548: if ($entry eq 'import') {
1.175 www 4549: #
4550: # Importing a library here
1.339 albertel 4551: #
4552: if ($depthcount<20) {
4553: my $location=$parser->get_text('/import');
4554: my $dir=$filename;
4555: $dir=~s|[^/]*$||;
4556: $location=&filelocation($dir,$location);
4557: foreach (sort(split(/\,/,&metadata($uri,'keys',
4558: $location,$unikey,
4559: $depthcount+1)))) {
1.599 albertel 4560: $metaentry{':'.$_}=$metaentry{':'.$_};
1.339 albertel 4561: $metathesekeys{$_}=1;
4562: }
4563: }
4564: } else {
4565:
4566: if (defined($token->[2]->{'name'})) {
4567: $unikey.='_'.$token->[2]->{'name'};
4568: }
4569: $metathesekeys{$unikey}=1;
4570: foreach (@{$token->[3]}) {
1.599 albertel 4571: $metaentry{':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.339 albertel 4572: }
4573: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
1.599 albertel 4574: my $default=$metaentry{':'.$unikey.'.default'};
1.339 albertel 4575: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
4576: # only ws inside the tag, and not in default, so use default
4577: # as value
1.599 albertel 4578: $metaentry{':'.$unikey}=$default;
1.339 albertel 4579: } else {
1.321 albertel 4580: # either something interesting inside the tag or default
4581: # uninteresting
1.599 albertel 4582: $metaentry{':'.$unikey}=$internaltext;
1.339 albertel 4583: }
1.172 www 4584: # end of not-a-package not-a-library import
1.339 albertel 4585: }
1.172 www 4586: # end of not-a-package start tag
1.339 albertel 4587: }
1.172 www 4588: # the next is the end of "start tag"
1.339 albertel 4589: }
4590: }
1.483 albertel 4591: my ($extension) = ($uri =~ /\.(\w+)$/);
4592: foreach my $key (sort(keys(%packagetab))) {
4593: #&logthis("extsion1 $extension $key !!");
4594: #no specific packages #how's our extension
4595: if ($key!~/^extension_\Q$extension\E&/) { next; }
1.488 albertel 4596: &metadata_create_package_def($uri,$key,'extension_'.$extension,
1.483 albertel 4597: \%metathesekeys);
4598: }
1.599 albertel 4599: if (!exists($metaentry{':packages'})) {
1.483 albertel 4600: foreach my $key (sort(keys(%packagetab))) {
4601: #no specific packages well let's get default then
4602: if ($key!~/^default&/) { next; }
1.488 albertel 4603: &metadata_create_package_def($uri,$key,'default',
1.483 albertel 4604: \%metathesekeys);
4605: }
4606: }
1.338 www 4607: # are there custom rights to evaluate
1.599 albertel 4608: if ($metaentry{':copyright'} eq 'custom') {
1.339 albertel 4609:
1.338 www 4610: #
4611: # Importing a rights file here
1.339 albertel 4612: #
4613: unless ($depthcount) {
1.599 albertel 4614: my $location=$metaentry{':customdistributionfile'};
1.339 albertel 4615: my $dir=$filename;
4616: $dir=~s|[^/]*$||;
4617: $location=&filelocation($dir,$location);
4618: foreach (sort(split(/\,/,&metadata($uri,'keys',
4619: $location,'_rights',
4620: $depthcount+1)))) {
1.599 albertel 4621: #$metaentry{':'.$_}=$metacache{$uri}->{':'.$_};
1.339 albertel 4622: $metathesekeys{$_}=1;
4623: }
4624: }
4625: }
1.599 albertel 4626: $metaentry{':keys'}=join(',',keys %metathesekeys);
4627: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
4628: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
4629: &do_cache_new('meta',$uri,\%metaentry);
1.177 www 4630: # this is the end of "was not already recently cached
1.71 www 4631: }
1.599 albertel 4632: return $metaentry{':'.$what};
1.261 albertel 4633: }
4634:
1.488 albertel 4635: sub metadata_create_package_def {
1.483 albertel 4636: my ($uri,$key,$package,$metathesekeys)=@_;
4637: my ($pack,$name,$subp)=split(/\&/,$key);
4638: if ($subp eq 'default') { next; }
4639:
1.599 albertel 4640: if (defined($metaentry{':packages'})) {
4641: $metaentry{':packages'}.=','.$package;
1.483 albertel 4642: } else {
1.599 albertel 4643: $metaentry{':packages'}=$package;
1.483 albertel 4644: }
4645: my $value=$packagetab{$key};
4646: my $unikey;
4647: $unikey='parameter_0_'.$name;
1.599 albertel 4648: $metaentry{':'.$unikey.'.part'}=0;
1.483 albertel 4649: $$metathesekeys{$unikey}=1;
1.599 albertel 4650: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
4651: $metaentry{':'.$unikey.'.'.$subp}=$value;
1.483 albertel 4652: }
1.599 albertel 4653: if (defined($metaentry{':'.$unikey.'.default'})) {
4654: $metaentry{':'.$unikey}=
4655: $metaentry{':'.$unikey.'.default'};
1.483 albertel 4656: }
4657: }
4658:
1.261 albertel 4659: sub metadata_generate_part0 {
4660: my ($metadata,$metacache,$uri) = @_;
4661: my %allnames;
4662: foreach my $metakey (sort keys %$metadata) {
4663: if ($metakey=~/^parameter\_(.*)/) {
1.428 albertel 4664: my $part=$$metacache{':'.$metakey.'.part'};
4665: my $name=$$metacache{':'.$metakey.'.name'};
1.356 albertel 4666: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
1.261 albertel 4667: $allnames{$name}=$part;
4668: }
4669: }
4670: }
4671: foreach my $name (keys(%allnames)) {
4672: $$metadata{"parameter_0_$name"}=1;
1.428 albertel 4673: my $key=":parameter_0_$name";
1.261 albertel 4674: $$metacache{"$key.part"}='0';
4675: $$metacache{"$key.name"}=$name;
1.428 albertel 4676: $$metacache{"$key.type"}=$$metacache{':parameter_'.
1.261 albertel 4677: $allnames{$name}.'_'.$name.
4678: '.type'};
1.428 albertel 4679: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
1.261 albertel 4680: '.display'};
4681: my $expr='\\[Part: '.$allnames{$name}.'\\]';
1.479 albertel 4682: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
1.261 albertel 4683: $$metacache{"$key.display"}=$olddis;
4684: }
1.71 www 4685: }
4686:
1.301 www 4687: # ------------------------------------------------- Get the title of a resource
4688:
4689: sub gettitle {
4690: my $urlsymb=shift;
4691: my $symb=&symbread($urlsymb);
1.534 albertel 4692: if ($symb) {
1.599 albertel 4693: my $key=$ENV{'request.course.id'}."\0".$symb;
4694: my ($result,$cached)=&is_cached_new('title',$key);
1.575 albertel 4695: if (defined($cached)) {
4696: return $result;
4697: }
1.534 albertel 4698: my ($map,$resid,$url)=&decode_symb($symb);
4699: my $title='';
4700: my %bighash;
4701: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
4702: &GDBM_READER(),0640)) {
4703: my $mapid=$bighash{'map_pc_'.&clutter($map)};
4704: $title=$bighash{'title_'.$mapid.'.'.$resid};
4705: untie %bighash;
4706: }
4707: $title=~s/\&colon\;/\:/gs;
4708: if ($title) {
1.599 albertel 4709: return &do_cache_new('title',$key,$title,600);
1.534 albertel 4710: }
4711: $urlsymb=$url;
4712: }
4713: my $title=&metadata($urlsymb,'title');
4714: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
4715: return $title;
1.301 www 4716: }
1.613 albertel 4717:
1.614 albertel 4718: sub get_slot {
4719: my ($which,$cnum,$cdom)=@_;
4720: if (!$cnum || !$cdom) {
4721: (undef,my $courseid)=&Apache::lonxml::whichuser();
4722: $cdom=$ENV{'course.'.$courseid.'.domain'};
4723: $cnum=$ENV{'course.'.$courseid.'.num'};
4724: }
4725: my %slotinfo=&get('slots',[$which],$cdom,$cnum);
4726: &Apache::lonhomework::showhash(%slotinfo);
4727: my ($tmp)=keys(%slotinfo);
4728: if ($tmp=~/^error:/) { return (); }
1.616 albertel 4729: if (ref($slotinfo{$which}) eq 'HASH') {
4730: return %{$slotinfo{$which}};
4731: }
4732: return $slotinfo{$which};
1.614 albertel 4733: }
1.31 www 4734: # ------------------------------------------------- Update symbolic store links
4735:
4736: sub symblist {
4737: my ($mapname,%newhash)=@_;
1.438 www 4738: $mapname=&deversion(&declutter($mapname));
1.31 www 4739: my %hash;
4740: if (($ENV{'request.course.fn'}) && (%newhash)) {
4741: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1.256 albertel 4742: &GDBM_WRCREAT(),0640)) {
1.191 harris41 4743: foreach (keys %newhash) {
1.601 albertel 4744: $hash{declutter($_)}=&encode_symb($mapname,$newhash{$_}->[1],
4745: $newhash{$_}->[0]);
1.191 harris41 4746: }
1.31 www 4747: if (untie(%hash)) {
4748: return 'ok';
4749: }
4750: }
4751: }
4752: return 'error';
1.212 www 4753: }
4754:
4755: # --------------------------------------------------------------- Verify a symb
4756:
4757: sub symbverify {
1.510 www 4758: my ($symb,$thisurl)=@_;
4759: my $thisfn=$thisurl;
4760: # wrapper not part of symbs
4761: $thisfn=~s/^\/adm\/wrapper//;
1.439 www 4762: $thisfn=&declutter($thisfn);
1.215 www 4763: # direct jump to resource in page or to a sequence - will construct own symbs
4764: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
4765: # check URL part
1.409 www 4766: my ($map,$resid,$url)=&decode_symb($symb);
1.439 www 4767:
1.431 www 4768: unless ($url eq $thisfn) { return 0; }
1.213 www 4769:
1.216 www 4770: $symb=&symbclean($symb);
1.510 www 4771: $thisurl=&deversion($thisurl);
1.439 www 4772: $thisfn=&deversion($thisfn);
1.213 www 4773:
4774: my %bighash;
4775: my $okay=0;
1.431 www 4776:
1.213 www 4777: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.256 albertel 4778: &GDBM_READER(),0640)) {
1.510 www 4779: my $ids=$bighash{'ids_'.&clutter($thisurl)};
1.216 www 4780: unless ($ids) {
1.510 www 4781: $ids=$bighash{'ids_/'.$thisurl};
1.216 www 4782: }
4783: if ($ids) {
4784: # ------------------------------------------------------------------- Has ID(s)
4785: foreach (split(/\,/,$ids)) {
4786: my ($mapid,$resid)=split(/\./,$_);
4787: if (
4788: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
4789: eq $symb) {
1.582 albertel 4790: if (($ENV{'request.role.adv'}) ||
4791: $bighash{'encrypted_'.$_} eq $ENV{'request.enc'}) {
4792: $okay=1;
4793: }
4794: }
1.216 www 4795: }
4796: }
1.213 www 4797: untie(%bighash);
4798: }
4799: return $okay;
1.31 www 4800: }
4801:
1.210 www 4802: # --------------------------------------------------------------- Clean-up symb
4803:
4804: sub symbclean {
4805: my $symb=shift;
1.568 albertel 4806: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
1.210 www 4807: # remove version from map
4808: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
1.215 www 4809:
1.210 www 4810: # remove version from URL
4811: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
1.213 www 4812:
1.507 www 4813: # remove wrapper
4814:
1.510 www 4815: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
1.210 www 4816: return $symb;
1.409 www 4817: }
4818:
4819: # ---------------------------------------------- Split symb to find map and url
1.429 albertel 4820:
4821: sub encode_symb {
4822: my ($map,$resid,$url)=@_;
4823: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
4824: }
1.409 www 4825:
4826: sub decode_symb {
1.568 albertel 4827: my $symb=shift;
4828: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
4829: my ($map,$resid,$url)=split(/___/,$symb);
1.413 www 4830: return (&fixversion($map),$resid,&fixversion($url));
4831: }
4832:
4833: sub fixversion {
4834: my $fn=shift;
1.609 banghart 4835: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
1.435 www 4836: my %bighash;
4837: my $uri=&clutter($fn);
1.440 www 4838: my $key=$ENV{'request.course.id'}.'_'.$uri;
4839: # is this cached?
1.599 albertel 4840: my ($result,$cached)=&is_cached_new('courseresversion',$key);
1.440 www 4841: if (defined($cached)) { return $result; }
4842: # unfortunately not cached, or expired
1.435 www 4843: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.440 www 4844: &GDBM_READER(),0640)) {
4845: if ($bighash{'version_'.$uri}) {
4846: my $version=$bighash{'version_'.$uri};
1.444 www 4847: unless (($version eq 'mostrecent') ||
4848: ($version==&getversion($uri))) {
1.440 www 4849: $uri=~s/\.(\w+)$/\.$version\.$1/;
4850: }
4851: }
4852: untie %bighash;
1.413 www 4853: }
1.599 albertel 4854: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
1.438 www 4855: }
4856:
4857: sub deversion {
4858: my $url=shift;
4859: $url=~s/\.\d+\.(\w+)$/\.$1/;
4860: return $url;
1.210 www 4861: }
4862:
1.31 www 4863: # ------------------------------------------------------ Return symb list entry
4864:
4865: sub symbread {
1.249 www 4866: my ($thisfn,$donotrecurse)=@_;
1.542 albertel 4867: my $cache_str='request.symbread.cached.'.$thisfn;
4868: if (defined($ENV{$cache_str})) { return $ENV{$cache_str}; }
1.242 www 4869: # no filename provided? try from environment
1.44 www 4870: unless ($thisfn) {
1.539 albertel 4871: if ($ENV{'request.symb'}) {
1.542 albertel 4872: return $ENV{$cache_str}=&symbclean($ENV{'request.symb'});
1.539 albertel 4873: }
1.44 www 4874: $thisfn=$ENV{'request.filename'};
4875: }
1.569 albertel 4876: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
1.242 www 4877: # is that filename actually a symb? Verify, clean, and return
4878: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
1.539 albertel 4879: if (&symbverify($thisfn,$1)) {
1.542 albertel 4880: return $ENV{$cache_str}=&symbclean($thisfn);
1.539 albertel 4881: }
1.242 www 4882: }
1.44 www 4883: $thisfn=declutter($thisfn);
1.31 www 4884: my %hash;
1.37 www 4885: my %bighash;
4886: my $syval='';
1.45 www 4887: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.481 raeburn 4888: my $targetfn = $thisfn;
1.609 banghart 4889: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
1.481 raeburn 4890: $targetfn = 'adm/wrapper/'.$thisfn;
4891: }
1.31 www 4892: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1.256 albertel 4893: &GDBM_READER(),0640)) {
1.481 raeburn 4894: $syval=$hash{$targetfn};
1.37 www 4895: untie(%hash);
4896: }
4897: # ---------------------------------------------------------- There was an entry
4898: if ($syval) {
1.601 albertel 4899: #unless ($syval=~/\_\d+$/) {
4900: #unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
4901: #&appenv('request.ambiguous' => $thisfn);
4902: #return $ENV{$cache_str}='';
4903: #}
4904: #$syval.=$1;
4905: #}
1.37 www 4906: } else {
4907: # ------------------------------------------------------- Was not in symb table
4908: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1.256 albertel 4909: &GDBM_READER(),0640)) {
1.37 www 4910: # ---------------------------------------------- Get ID(s) for current resource
1.280 www 4911: my $ids=$bighash{'ids_'.&clutter($thisfn)};
1.65 www 4912: unless ($ids) {
4913: $ids=$bighash{'ids_/'.$thisfn};
1.242 www 4914: }
4915: unless ($ids) {
4916: # alias?
4917: $ids=$bighash{'mapalias_'.$thisfn};
1.65 www 4918: }
1.37 www 4919: if ($ids) {
4920: # ------------------------------------------------------------------- Has ID(s)
4921: my @possibilities=split(/\,/,$ids);
1.39 www 4922: if ($#possibilities==0) {
4923: # ----------------------------------------------- There is only one possibility
1.37 www 4924: my ($mapid,$resid)=split(/\./,$ids);
4925: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
1.249 www 4926: } elsif (!$donotrecurse) {
1.39 www 4927: # ------------------------------------------ There is more than one possibility
4928: my $realpossible=0;
1.191 harris41 4929: foreach (@possibilities) {
1.39 www 4930: my $file=$bighash{'src_'.$_};
4931: if (&allowed('bre',$file)) {
4932: my ($mapid,$resid)=split(/\./,$_);
4933: if ($bighash{'map_type_'.$mapid} ne 'page') {
4934: $realpossible++;
4935: $syval=declutter($bighash{'map_id_'.$mapid}).
4936: '___'.$resid;
4937: }
4938: }
1.191 harris41 4939: }
1.39 www 4940: if ($realpossible!=1) { $syval=''; }
1.249 www 4941: } else {
4942: $syval='';
1.37 www 4943: }
4944: }
4945: untie(%bighash)
1.481 raeburn 4946: }
1.31 www 4947: }
1.62 www 4948: if ($syval) {
1.601 albertel 4949: return $ENV{$cache_str}=$syval;
4950: #return $ENV{$cache_str}=&symbclean($syval.'___'.$thisfn);
1.62 www 4951: }
1.31 www 4952: }
1.44 www 4953: &appenv('request.ambiguous' => $thisfn);
1.542 albertel 4954: return $ENV{$cache_str}='';
1.31 www 4955: }
4956:
4957: # ---------------------------------------------------------- Return random seed
4958:
1.32 www 4959: sub numval {
4960: my $txt=shift;
4961: $txt=~tr/A-J/0-9/;
4962: $txt=~tr/a-j/0-9/;
4963: $txt=~tr/K-T/0-9/;
4964: $txt=~tr/k-t/0-9/;
4965: $txt=~tr/U-Z/0-5/;
4966: $txt=~tr/u-z/0-5/;
4967: $txt=~s/\D//g;
1.564 albertel 4968: if ($_64bit) { if ($txt > 2**32) { return -1; } }
1.32 www 4969: return int($txt);
1.368 albertel 4970: }
4971:
1.484 albertel 4972: sub numval2 {
4973: my $txt=shift;
4974: $txt=~tr/A-J/0-9/;
4975: $txt=~tr/a-j/0-9/;
4976: $txt=~tr/K-T/0-9/;
4977: $txt=~tr/k-t/0-9/;
4978: $txt=~tr/U-Z/0-5/;
4979: $txt=~tr/u-z/0-5/;
4980: $txt=~s/\D//g;
4981: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
4982: my $total;
4983: foreach my $val (@txts) { $total+=$val; }
1.564 albertel 4984: if ($_64bit) { if ($total > 2**32) { return -1; } }
1.484 albertel 4985: return int($total);
4986: }
4987:
1.575 albertel 4988: sub numval3 {
4989: use integer;
4990: my $txt=shift;
4991: $txt=~tr/A-J/0-9/;
4992: $txt=~tr/a-j/0-9/;
4993: $txt=~tr/K-T/0-9/;
4994: $txt=~tr/k-t/0-9/;
4995: $txt=~tr/U-Z/0-5/;
4996: $txt=~tr/u-z/0-5/;
4997: $txt=~s/\D//g;
4998: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
4999: my $total;
5000: foreach my $val (@txts) { $total+=$val; }
5001: if ($_64bit) { $total=(($total<<32)>>32); }
5002: return $total;
5003: }
5004:
1.368 albertel 5005: sub latest_rnd_algorithm_id {
1.575 albertel 5006: return '64bit4';
1.366 albertel 5007: }
1.32 www 5008:
1.503 albertel 5009: sub get_rand_alg {
5010: my ($courseid)=@_;
5011: if (!$courseid) { $courseid=(&Apache::lonxml::whichuser())[1]; }
5012: if ($courseid) {
5013: return $ENV{"course.$courseid.rndseed"};
5014: }
5015: return &latest_rnd_algorithm_id();
5016: }
5017:
1.562 albertel 5018: sub validCODE {
5019: my ($CODE)=@_;
5020: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
5021: return 0;
5022: }
5023:
1.491 albertel 5024: sub getCODE {
1.562 albertel 5025: if (&validCODE($ENV{'form.CODE'})) { return $ENV{'form.CODE'}; }
1.491 albertel 5026: if (defined($Apache::lonhomework::parsing_a_problem) &&
1.562 albertel 5027: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
1.491 albertel 5028: return $Apache::lonhomework::history{'resource.CODE'};
5029: }
5030: return undef;
5031: }
5032:
1.31 www 5033: sub rndseed {
1.155 albertel 5034: my ($symb,$courseid,$domain,$username)=@_;
1.366 albertel 5035:
5036: my ($wsymb,$wcourseid,$wdomain,$wusername)=&Apache::lonxml::whichuser();
1.155 albertel 5037: if (!$symb) {
1.366 albertel 5038: unless ($symb=$wsymb) { return time; }
5039: }
5040: if (!$courseid) { $courseid=$wcourseid; }
5041: if (!$domain) { $domain=$wdomain; }
5042: if (!$username) { $username=$wusername }
1.503 albertel 5043: my $which=&get_rand_alg();
1.491 albertel 5044: if (defined(&getCODE())) {
1.575 albertel 5045: if ($which eq '64bit4') {
5046: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
5047: } else {
5048: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
5049: }
5050: } elsif ($which eq '64bit4') {
5051: return &rndseed_64bit4($symb,$courseid,$domain,$username);
1.501 albertel 5052: } elsif ($which eq '64bit3') {
5053: return &rndseed_64bit3($symb,$courseid,$domain,$username);
1.443 albertel 5054: } elsif ($which eq '64bit2') {
5055: return &rndseed_64bit2($symb,$courseid,$domain,$username);
1.366 albertel 5056: } elsif ($which eq '64bit') {
5057: return &rndseed_64bit($symb,$courseid,$domain,$username);
5058: }
5059: return &rndseed_32bit($symb,$courseid,$domain,$username);
5060: }
5061:
5062: sub rndseed_32bit {
5063: my ($symb,$courseid,$domain,$username)=@_;
5064: {
5065: use integer;
5066: my $symbchck=unpack("%32C*",$symb) << 27;
5067: my $symbseed=numval($symb) << 22;
5068: my $namechck=unpack("%32C*",$username) << 17;
5069: my $nameseed=numval($username) << 12;
5070: my $domainseed=unpack("%32C*",$domain) << 7;
5071: my $courseseed=unpack("%32C*",$courseid);
5072: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
5073: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5074: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.564 albertel 5075: if ($_64bit) { $num=(($num<<32)>>32); }
1.366 albertel 5076: return $num;
5077: }
5078: }
5079:
5080: sub rndseed_64bit {
5081: my ($symb,$courseid,$domain,$username)=@_;
5082: {
5083: use integer;
5084: my $symbchck=unpack("%32S*",$symb) << 21;
5085: my $symbseed=numval($symb) << 10;
5086: my $namechck=unpack("%32S*",$username);
5087:
5088: my $nameseed=numval($username) << 21;
5089: my $domainseed=unpack("%32S*",$domain) << 10;
5090: my $courseseed=unpack("%32S*",$courseid);
5091:
5092: my $num1=$symbchck+$symbseed+$namechck;
5093: my $num2=$nameseed+$domainseed+$courseseed;
5094: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5095: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.564 albertel 5096: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
5097: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
1.366 albertel 5098: return "$num1,$num2";
1.155 albertel 5099: }
1.366 albertel 5100: }
5101:
1.443 albertel 5102: sub rndseed_64bit2 {
5103: my ($symb,$courseid,$domain,$username)=@_;
5104: {
5105: use integer;
5106: # strings need to be an even # of cahracters long, it it is odd the
5107: # last characters gets thrown away
5108: my $symbchck=unpack("%32S*",$symb.' ') << 21;
5109: my $symbseed=numval($symb) << 10;
5110: my $namechck=unpack("%32S*",$username.' ');
5111:
5112: my $nameseed=numval($username) << 21;
1.501 albertel 5113: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5114: my $courseseed=unpack("%32S*",$courseid.' ');
5115:
5116: my $num1=$symbchck+$symbseed+$namechck;
5117: my $num2=$nameseed+$domainseed+$courseseed;
5118: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5119: #&Apache::lonxml::debug("rndseed :$num:$symb");
5120: return "$num1,$num2";
5121: }
5122: }
5123:
5124: sub rndseed_64bit3 {
5125: my ($symb,$courseid,$domain,$username)=@_;
5126: {
5127: use integer;
5128: # strings need to be an even # of cahracters long, it it is odd the
5129: # last characters gets thrown away
5130: my $symbchck=unpack("%32S*",$symb.' ') << 21;
5131: my $symbseed=numval2($symb) << 10;
5132: my $namechck=unpack("%32S*",$username.' ');
5133:
5134: my $nameseed=numval2($username) << 21;
1.443 albertel 5135: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5136: my $courseseed=unpack("%32S*",$courseid.' ');
5137:
5138: my $num1=$symbchck+$symbseed+$namechck;
5139: my $num2=$nameseed+$domainseed+$courseseed;
5140: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
1.564 albertel 5141: #&Apache::lonxml::debug("rndseed :$num1:$num2:$_64bit");
5142: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
5143:
1.503 albertel 5144: return "$num1:$num2";
1.443 albertel 5145: }
5146: }
5147:
1.575 albertel 5148: sub rndseed_64bit4 {
5149: my ($symb,$courseid,$domain,$username)=@_;
5150: {
5151: use integer;
5152: # strings need to be an even # of cahracters long, it it is odd the
5153: # last characters gets thrown away
5154: my $symbchck=unpack("%32S*",$symb.' ') << 21;
5155: my $symbseed=numval3($symb) << 10;
5156: my $namechck=unpack("%32S*",$username.' ');
5157:
5158: my $nameseed=numval3($username) << 21;
5159: my $domainseed=unpack("%32S*",$domain.' ') << 10;
5160: my $courseseed=unpack("%32S*",$courseid.' ');
5161:
5162: my $num1=$symbchck+$symbseed+$namechck;
5163: my $num2=$nameseed+$domainseed+$courseseed;
5164: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
5165: #&Apache::lonxml::debug("rndseed :$num1:$num2:$_64bit");
5166: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
5167:
5168: return "$num1:$num2";
5169: }
5170: }
5171:
1.366 albertel 5172: sub rndseed_CODE_64bit {
5173: my ($symb,$courseid,$domain,$username)=@_;
1.155 albertel 5174: {
1.366 albertel 5175: use integer;
1.443 albertel 5176: my $symbchck=unpack("%32S*",$symb.' ') << 16;
1.484 albertel 5177: my $symbseed=numval2($symb);
1.491 albertel 5178: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
5179: my $CODEseed=numval(&getCODE());
1.443 albertel 5180: my $courseseed=unpack("%32S*",$courseid.' ');
1.484 albertel 5181: my $num1=$symbseed+$CODEchck;
5182: my $num2=$CODEseed+$courseseed+$symbchck;
5183: #&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
1.366 albertel 5184: #&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
1.564 albertel 5185: if ($_64bit) { $num1=(($num1<<32)>>32); }
5186: if ($_64bit) { $num2=(($num2<<32)>>32); }
1.503 albertel 5187: return "$num1:$num2";
1.366 albertel 5188: }
5189: }
5190:
1.575 albertel 5191: sub rndseed_CODE_64bit4 {
5192: my ($symb,$courseid,$domain,$username)=@_;
5193: {
5194: use integer;
5195: my $symbchck=unpack("%32S*",$symb.' ') << 16;
5196: my $symbseed=numval3($symb);
5197: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
5198: my $CODEseed=numval3(&getCODE());
5199: my $courseseed=unpack("%32S*",$courseid.' ');
5200: my $num1=$symbseed+$CODEchck;
5201: my $num2=$CODEseed+$courseseed+$symbchck;
5202: #&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
5203: #&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
5204: if ($_64bit) { $num1=(($num1<<32)>>32); }
5205: if ($_64bit) { $num2=(($num2<<32)>>32); }
5206: return "$num1:$num2";
5207: }
5208: }
5209:
1.366 albertel 5210: sub setup_random_from_rndseed {
5211: my ($rndseed)=@_;
1.503 albertel 5212: if ($rndseed =~/([,:])/) {
5213: my ($num1,$num2)=split(/[,:]/,$rndseed);
1.366 albertel 5214: &Math::Random::random_set_seed(abs($num1),abs($num2));
5215: } else {
5216: &Math::Random::random_set_seed_from_phrase($rndseed);
1.98 albertel 5217: }
1.36 albertel 5218: }
5219:
1.474 albertel 5220: sub latest_receipt_algorithm_id {
5221: return 'receipt2';
5222: }
5223:
1.480 www 5224: sub recunique {
5225: my $fucourseid=shift;
5226: my $unique;
5227: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2') {
5228: $unique=$ENV{"course.$fucourseid.internal.encseed"};
5229: } else {
5230: $unique=$perlvar{'lonReceipt'};
5231: }
5232: return unpack("%32C*",$unique);
5233: }
5234:
5235: sub recprefix {
5236: my $fucourseid=shift;
5237: my $prefix;
5238: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2') {
5239: $prefix=$ENV{"course.$fucourseid.internal.encpref"};
5240: } else {
5241: $prefix=$perlvar{'lonHostID'};
5242: }
5243: return unpack("%32C*",$prefix);
5244: }
5245:
1.76 www 5246: sub ireceipt {
1.474 albertel 5247: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
1.76 www 5248: my $cuname=unpack("%32C*",$funame);
5249: my $cudom=unpack("%32C*",$fudom);
5250: my $cucourseid=unpack("%32C*",$fucourseid);
5251: my $cusymb=unpack("%32C*",$fusymb);
1.480 www 5252: my $cunique=&recunique($fucourseid);
1.474 albertel 5253: my $cpart=unpack("%32S*",$part);
1.480 www 5254: my $return =&recprefix($fucourseid).'-';
1.474 albertel 5255: if ($ENV{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
5256: $ENV{'request.state'} eq 'construct') {
5257: &Apache::lonxml::debug("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname).
5258: " and ".($cpart%$cudom));
5259:
5260: $return.= ($cunique%$cuname+
5261: $cunique%$cudom+
5262: $cusymb%$cuname+
5263: $cusymb%$cudom+
5264: $cucourseid%$cuname+
5265: $cucourseid%$cudom+
5266: $cpart%$cuname+
5267: $cpart%$cudom);
5268: } else {
5269: $return.= ($cunique%$cuname+
5270: $cunique%$cudom+
5271: $cusymb%$cuname+
5272: $cusymb%$cudom+
5273: $cucourseid%$cuname+
5274: $cucourseid%$cudom);
5275: }
5276: return $return;
1.76 www 5277: }
5278:
5279: sub receipt {
1.474 albertel 5280: my ($part)=@_;
5281: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
5282: return &ireceipt($name,$domain,$courseid,$symb,$part);
1.76 www 5283: }
1.260 ng 5284:
1.36 albertel 5285: # ------------------------------------------------------------ Serves up a file
1.472 albertel 5286: # returns either the contents of the file or
5287: # -1 if the file doesn't exist
1.481 raeburn 5288: #
5289: # if the target is a file that was uploaded via DOCS,
5290: # a check will be made to see if a current copy exists on the local server,
5291: # if it does this will be served, otherwise a copy will be retrieved from
5292: # the home server for the course and stored in /home/httpd/html/userfiles on
5293: # the local server.
1.472 albertel 5294:
1.36 albertel 5295: sub getfile {
1.538 albertel 5296: my ($file) = @_;
1.609 banghart 5297: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
1.538 albertel 5298: &repcopy($file);
5299: return &readfile($file);
5300: }
5301:
5302: sub repcopy_userfile {
5303: my ($file)=@_;
1.609 banghart 5304: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
1.610 albertel 5305: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1.538 albertel 5306: my ($cdom,$cnum,$filename) =
5307: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+([^/]+)/+([^/]+)/+(.*)|);
5308: my ($info,$rtncode);
5309: my $uri="/uploaded/$cdom/$cnum/$filename";
5310: if (-e "$file") {
5311: my @fileinfo = stat($file);
5312: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5313: if ($lwpresp ne 'ok') {
5314: if ($rtncode eq '404') {
1.538 albertel 5315: unlink($file);
1.482 albertel 5316: }
1.517 albertel 5317: #my $ua=new LWP::UserAgent;
1.538 albertel 5318: #my $request=new HTTP::Request('GET',&tokenwrapper($uri));
1.517 albertel 5319: #my $response=$ua->request($request);
5320: #if ($response->is_success()) {
5321: # return $response->content;
5322: # } else {
5323: # return -1;
5324: # }
1.482 albertel 5325: return -1;
5326: }
5327: if ($info < $fileinfo[9]) {
1.607 raeburn 5328: return 'ok';
1.482 albertel 5329: }
5330: $info = '';
1.538 albertel 5331: $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5332: if ($lwpresp ne 'ok') {
5333: return -1;
5334: }
5335: } else {
1.538 albertel 5336: my $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);
1.482 albertel 5337: if ($lwpresp ne 'ok') {
1.517 albertel 5338: my $ua=new LWP::UserAgent;
1.538 albertel 5339: my $request=new HTTP::Request('GET',&tokenwrapper($uri));
1.517 albertel 5340: my $response=$ua->request($request);
5341: if ($response->is_success()) {
1.538 albertel 5342: $info=$response->content;
1.517 albertel 5343: } else {
5344: return -1;
5345: }
1.482 albertel 5346: }
5347: my @parts = ($cdom,$cnum);
5348: if ($filename =~ m|^(.+)/[^/]+$|) {
5349: push @parts, split(/\//,$1);
1.518 albertel 5350: }
1.538 albertel 5351: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
1.482 albertel 5352: foreach my $part (@parts) {
5353: $path .= '/'.$part;
5354: if (!-e $path) {
5355: mkdir($path,0770);
5356: }
5357: }
5358: }
1.538 albertel 5359: open(FILE,">$file");
1.482 albertel 5360: print FILE $info;
5361: close(FILE);
1.607 raeburn 5362: return 'ok';
1.481 raeburn 5363: }
5364:
1.517 albertel 5365: sub tokenwrapper {
5366: my $uri=shift;
1.552 albertel 5367: $uri=~s|^http\://([^/]+)||;
5368: $uri=~s|^/||;
1.517 albertel 5369: $ENV{'user.environment'}=~/\/([^\/]+)\.id/;
5370: my $token=$1;
1.552 albertel 5371: my (undef,$udom,$uname,$file)=split('/',$uri,4);
5372: if ($udom && $uname && $file) {
5373: $file=~s|(\?\.*)*$||;
5374: &appenv("userfile.$udom/$uname/$file" => $ENV{'request.course.id'});
5375: return 'http://'.$hostname{ &homeserver($uname,$udom)}.'/'.$uri.
1.517 albertel 5376: (($uri=~/\?/)?'&':'?').'token='.$token.
5377: '&tokenissued='.$perlvar{'lonHostID'};
5378: } else {
5379: return '/adm/notfound.html';
5380: }
5381: }
5382:
1.481 raeburn 5383: sub getuploaded {
5384: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
5385: $uri=~s/^\///;
5386: $uri = 'http://'.$hostname{ &homeserver($cnum,$cdom)}.'/raw/'.$uri;
5387: my $ua=new LWP::UserAgent;
5388: my $request=new HTTP::Request($reqtype,$uri);
5389: my $response=$ua->request($request);
5390: $$rtncode = $response->code;
1.482 albertel 5391: if (! $response->is_success()) {
5392: return 'failed';
5393: }
5394: if ($reqtype eq 'HEAD') {
1.486 www 5395: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
1.482 albertel 5396: } elsif ($reqtype eq 'GET') {
5397: $$info = $response->content;
1.472 albertel 5398: }
1.482 albertel 5399: return 'ok';
1.36 albertel 5400: }
5401:
1.481 raeburn 5402: sub readfile {
5403: my $file = shift;
5404: if ( (! -e $file ) || ($file eq '') ) { return -1; };
5405: my $fh;
5406: open($fh,"<$file");
5407: my $a='';
5408: while (<$fh>) { $a .=$_; }
5409: return $a;
5410: }
5411:
1.36 albertel 5412: sub filelocation {
1.590 banghart 5413: my ($dir,$file) = @_;
5414: my $location;
5415: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
5416: if ($file=~m:^/~:) { # is a contruction space reference
5417: $location = $file;
5418: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.609 banghart 5419: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
1.590 banghart 5420: my ($udom,$uname,$filename)=
1.609 banghart 5421: ($file=~m -^/+(?:uploaded|editupload)/+([^/]+)/+([^/]+)/+(.*)$-);
1.590 banghart 5422: my $home=&homeserver($uname,$udom);
5423: my $is_me=0;
5424: my @ids=¤t_machine_ids();
5425: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
5426: if ($is_me) {
5427: $location=&Apache::loncommon::propath($udom,$uname).
5428: '/userfiles/'.$filename;
5429: } else {
5430: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
5431: $udom.'/'.$uname.'/'.$filename;
5432: }
5433: } else {
5434: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
5435: $file=~s:^/res/:/:;
5436: if ( !( $file =~ m:^/:) ) {
5437: $location = $dir. '/'.$file;
5438: } else {
5439: $location = '/home/httpd/html/res'.$file;
5440: }
1.59 albertel 5441: }
1.590 banghart 5442: $location=~s://+:/:g; # remove duplicate /
5443: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
5444: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
5445: return $location;
1.46 www 5446: }
1.36 albertel 5447:
1.46 www 5448: sub hreflocation {
5449: my ($dir,$file)=@_;
1.460 albertel 5450: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
5451: my $finalpath=filelocation($dir,$file);
5452: $finalpath=~s-^/home/httpd/html--;
1.462 albertel 5453: $finalpath=~s-^/home/(\w+)/public_html/-/~$1/-;
1.460 albertel 5454: return $finalpath;
5455: } elsif ($file=~m-^/home-) {
5456: $file=~s-^/home/httpd/html--;
1.462 albertel 5457: $file=~s-^/home/(\w+)/public_html/-/~$1/-;
1.460 albertel 5458: return $file;
1.46 www 5459: }
1.462 albertel 5460: return $file;
1.465 albertel 5461: }
5462:
5463: sub current_machine_domains {
5464: my $hostname=$hostname{$perlvar{'lonHostID'}};
5465: my @domains;
5466: while( my($id, $name) = each(%hostname)) {
1.467 matthew 5467: # &logthis("-$id-$name-$hostname-");
1.465 albertel 5468: if ($hostname eq $name) {
5469: push(@domains,$hostdom{$id});
5470: }
5471: }
5472: return @domains;
5473: }
5474:
5475: sub current_machine_ids {
5476: my $hostname=$hostname{$perlvar{'lonHostID'}};
5477: my @ids;
5478: while( my($id, $name) = each(%hostname)) {
1.467 matthew 5479: # &logthis("-$id-$name-$hostname-");
1.465 albertel 5480: if ($hostname eq $name) {
5481: push(@ids,$id);
5482: }
5483: }
5484: return @ids;
1.31 www 5485: }
5486:
5487: # ------------------------------------------------------------- Declutters URLs
5488:
5489: sub declutter {
5490: my $thisfn=shift;
1.569 albertel 5491: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
1.479 albertel 5492: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
1.31 www 5493: $thisfn=~s/^\///;
5494: $thisfn=~s/^res\///;
1.235 www 5495: $thisfn=~s/\?.+$//;
1.268 www 5496: return $thisfn;
5497: }
5498:
5499: # ------------------------------------------------------------- Clutter up URLs
5500:
5501: sub clutter {
5502: my $thisfn='/'.&declutter(shift);
1.609 banghart 5503: unless ($thisfn=~/^\/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)\//) {
1.270 www 5504: $thisfn='/res'.$thisfn;
5505: }
1.31 www 5506: return $thisfn;
1.12 www 5507: }
5508:
1.557 albertel 5509: sub freeze_escape {
5510: my ($value)=@_;
5511: if (ref($value)) {
5512: $value=&nfreeze($value);
5513: return '__FROZEN__'.&escape($value);
5514: }
5515: return &escape($value);
5516: }
5517:
1.12 www 5518: # -------------------------------------------------------- Escape Special Chars
5519:
5520: sub escape {
5521: my $str=shift;
5522: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
5523: return $str;
5524: }
5525:
5526: # ----------------------------------------------------- Un-Escape Special Chars
5527:
5528: sub unescape {
5529: my $str=shift;
5530: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
5531: return $str;
5532: }
1.11 www 5533:
1.557 albertel 5534: sub thaw_unescape {
5535: my ($value)=@_;
5536: if ($value =~ /^__FROZEN__/) {
5537: substr($value,0,10,undef);
5538: $value=&unescape($value);
5539: return &thaw($value);
5540: }
5541: return &unescape($value);
5542: }
5543:
1.415 albertel 5544: sub mod_perl_version {
1.580 albertel 5545: return 1;
1.415 albertel 5546: if (defined($perlvar{'MODPERL2'})) {
5547: return 2;
5548: }
1.436 albertel 5549: }
5550:
5551: sub correct_line_ends {
5552: my ($result)=@_;
5553: $$result =~s/\r\n/\n/mg;
5554: $$result =~s/\r/\n/mg;
1.415 albertel 5555: }
1.1 albertel 5556: # ================================================================ Main Program
5557:
1.184 www 5558: sub goodbye {
1.204 albertel 5559: &logthis("Starting Shut down");
1.443 albertel 5560: #not converted to using infrastruture and probably shouldn't be
1.599 albertel 5561: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&freeze(\%badServerCache))));
1.443 albertel 5562: #converted
1.599 albertel 5563: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
5564: &logthis(sprintf("%-20s is %s",'%homecache',length(&freeze(\%homecache))));
5565: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&freeze(\%titlecache))));
5566: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&freeze(\%courseresdatacache))));
1.425 albertel 5567: #1.1 only
1.599 albertel 5568: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&freeze(\%userresdatacache))));
5569: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&freeze(\%getsectioncache))));
5570: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&freeze(\%courseresversioncache))));
5571: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&freeze(\%resversioncache))));
5572: &logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
5573: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
5574: &logthis(sprintf("%-20s is %s",'hits',$hits));
1.184 www 5575: &flushcourselogs();
5576: &logthis("Shutting down");
1.362 albertel 5577: return DONE;
1.184 www 5578: }
5579:
1.179 www 5580: BEGIN {
1.228 harris41 5581: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
1.195 www 5582: unless ($readit) {
1.217 harris41 5583: {
1.581 matthew 5584: # FIXME: Use LONCAPA::Configuration::read_conf here and omit next block
1.448 albertel 5585: open(my $config,"</etc/httpd/conf/loncapa.conf");
1.217 harris41 5586:
5587: while (my $configline=<$config>) {
1.484 albertel 5588: if ($configline=~/\S/ && $configline =~ /^[^\#]*PerlSetVar/) {
1.1 albertel 5589: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 5590: chomp($varvalue);
1.1 albertel 5591: $perlvar{$varname}=$varvalue;
5592: }
5593: }
1.448 albertel 5594: close($config);
1.1 albertel 5595: }
1.227 harris41 5596: {
1.448 albertel 5597: open(my $config,"</etc/httpd/conf/loncapa_apache.conf");
1.227 harris41 5598:
5599: while (my $configline=<$config>) {
5600: if ($configline =~ /^[^\#]*PerlSetVar/) {
5601: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
5602: chomp($varvalue);
5603: $perlvar{$varname}=$varvalue;
5604: }
5605: }
1.448 albertel 5606: close($config);
1.227 harris41 5607: }
1.1 albertel 5608:
1.327 albertel 5609: # ------------------------------------------------------------ Read domain file
5610: {
5611: %domaindescription = ();
5612: %domain_auth_def = ();
5613: %domain_auth_arg_def = ();
1.448 albertel 5614: my $fh;
5615: if (open($fh,"<".$Apache::lonnet::perlvar{'lonTabDir'}.'/domain.tab')) {
1.327 albertel 5616: while (<$fh>) {
1.390 matthew 5617: next if (/^(\#|\s*$)/);
5618: # next if /^\#/;
1.327 albertel 5619: chomp;
1.403 www 5620: my ($domain, $domain_description, $def_auth, $def_auth_arg,
5621: $def_lang, $city, $longi, $lati) = split(/:/,$_);
5622: $domain_auth_def{$domain}=$def_auth;
1.327 albertel 5623: $domain_auth_arg_def{$domain}=$def_auth_arg;
1.403 www 5624: $domaindescription{$domain}=$domain_description;
5625: $domain_lang_def{$domain}=$def_lang;
5626: $domain_city{$domain}=$city;
5627: $domain_longi{$domain}=$longi;
5628: $domain_lati{$domain}=$lati;
5629:
1.448 albertel 5630: # &logthis("Domain.tab: $domain, $domain_auth_def{$domain}, $domain_auth_arg_def{$domain},$domaindescription{$domain}");
1.327 albertel 5631: # &logthis("Domain.tab: $domain ".$domaindescription{$domain} );
1.448 albertel 5632: }
1.327 albertel 5633: }
1.448 albertel 5634: close ($fh);
1.327 albertel 5635: }
5636:
5637:
1.1 albertel 5638: # ------------------------------------------------------------- Read hosts file
5639: {
1.448 albertel 5640: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
1.1 albertel 5641:
5642: while (my $configline=<$config>) {
1.303 matthew 5643: next if ($configline =~ /^(\#|\s*$)/);
1.154 www 5644: chomp($configline);
1.595 albertel 5645: my ($id,$domain,$role,$name)=split(/:/,$configline);
1.597 albertel 5646: $name=~s/\s//g;
1.595 albertel 5647: if ($id && $domain && $role && $name) {
1.252 albertel 5648: $hostname{$id}=$name;
5649: $hostdom{$id}=$domain;
5650: if ($role eq 'library') { $libserv{$id}=$name; }
1.245 www 5651: }
1.1 albertel 5652: }
1.448 albertel 5653: close($config);
1.1 albertel 5654: }
5655:
1.598 albertel 5656: sub get_iphost {
5657: if (%iphost) { return %iphost; }
5658: foreach my $id (keys(%hostname)) {
5659: my $name=$hostname{$id};
5660: my $ip = gethostbyname($name);
5661: if (!$ip || length($ip) ne 4) {
5662: &logthis("Skipping host $id name $name no IP found\n");
5663: next;
5664: }
5665: $ip=inet_ntoa($ip);
5666: push(@{$iphost{$ip}},$id);
5667: }
5668: return %iphost;
5669: }
5670:
1.1 albertel 5671: # ------------------------------------------------------ Read spare server file
5672: {
1.448 albertel 5673: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
1.1 albertel 5674:
5675: while (my $configline=<$config>) {
5676: chomp($configline);
1.284 matthew 5677: if ($configline) {
1.1 albertel 5678: $spareid{$configline}=1;
5679: }
5680: }
1.448 albertel 5681: close($config);
1.1 albertel 5682: }
1.11 www 5683: # ------------------------------------------------------------ Read permissions
5684: {
1.448 albertel 5685: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
1.11 www 5686:
5687: while (my $configline=<$config>) {
1.448 albertel 5688: chomp($configline);
5689: if ($configline) {
5690: my ($role,$perm)=split(/ /,$configline);
5691: if ($perm ne '') { $pr{$role}=$perm; }
5692: }
1.11 www 5693: }
1.448 albertel 5694: close($config);
1.11 www 5695: }
5696:
5697: # -------------------------------------------- Read plain texts for permissions
5698: {
1.448 albertel 5699: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
1.11 www 5700:
5701: while (my $configline=<$config>) {
1.448 albertel 5702: chomp($configline);
5703: if ($configline) {
5704: my ($short,$plain)=split(/:/,$configline);
5705: if ($plain ne '') { $prp{$short}=$plain; }
5706: }
1.135 www 5707: }
1.448 albertel 5708: close($config);
1.135 www 5709: }
5710:
5711: # ---------------------------------------------------------- Read package table
5712: {
1.448 albertel 5713: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
1.135 www 5714:
5715: while (my $configline=<$config>) {
1.483 albertel 5716: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
1.448 albertel 5717: chomp($configline);
5718: my ($short,$plain)=split(/:/,$configline);
5719: my ($pack,$name)=split(/\&/,$short);
5720: if ($plain ne '') {
5721: $packagetab{$pack.'&'.$name.'&name'}=$name;
5722: $packagetab{$short}=$plain;
5723: }
1.11 www 5724: }
1.448 albertel 5725: close($config);
1.329 matthew 5726: }
5727:
5728: # ------------- set up temporary directory
5729: {
5730: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
5731:
1.11 www 5732: }
5733:
1.599 albertel 5734: $memcache=new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.185 www 5735:
1.281 www 5736: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
1.186 www 5737: $dumpcount=0;
1.22 www 5738:
1.163 harris41 5739: &logtouch();
1.12 www 5740: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.195 www 5741: $readit=1;
1.564 albertel 5742: {
5743: use integer;
5744: my $test=(2**32)+1;
1.568 albertel 5745: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
1.564 albertel 5746: &logthis(" Detected 64bit platform ($_64bit)");
5747: }
1.195 www 5748: }
1.1 albertel 5749: }
1.179 www 5750:
1.1 albertel 5751: 1;
1.191 harris41 5752: __END__
5753:
1.243 albertel 5754: =pod
5755:
1.191 harris41 5756: =head1 NAME
5757:
1.243 albertel 5758: Apache::lonnet - Subroutines to ask questions about things in the network.
1.191 harris41 5759:
5760: =head1 SYNOPSIS
5761:
1.243 albertel 5762: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
1.191 harris41 5763:
5764: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
5765:
1.243 albertel 5766: Common parameters:
5767:
5768: =over 4
5769:
5770: =item *
5771:
5772: $uname : an internal username (if $cname expecting a course Id specifically)
5773:
5774: =item *
5775:
5776: $udom : a domain (if $cdom expecting a course's domain specifically)
5777:
5778: =item *
5779:
5780: $symb : a resource instance identifier
5781:
5782: =item *
5783:
5784: $namespace : the name of a .db file that contains the data needed or
5785: being set.
5786:
5787: =back
5788:
1.394 bowersj2 5789: =head1 OVERVIEW
1.191 harris41 5790:
1.394 bowersj2 5791: lonnet provides subroutines which interact with the
5792: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
5793: about classes, users, and resources.
1.243 albertel 5794:
5795: For many of these objects you can also use this to store data about
5796: them or modify them in various ways.
1.191 harris41 5797:
1.394 bowersj2 5798: =head2 Symbs
1.191 harris41 5799:
1.394 bowersj2 5800: To identify a specific instance of a resource, LON-CAPA uses symbols
5801: or "symbs"X<symb>. These identifiers are built from the URL of the
5802: map, the resource number of the resource in the map, and the URL of
5803: the resource itself. The latter is somewhat redundant, but might help
5804: if maps change.
5805:
5806: An example is
5807:
5808: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
5809:
5810: The respective map entry is
5811:
5812: <resource id="19" src="/res/msu/korte/tests/part12.problem"
5813: title="Problem 2">
5814: </resource>
5815:
5816: Symbs are used by the random number generator, as well as to store and
5817: restore data specific to a certain instance of for example a problem.
5818:
5819: =head2 Storing And Retrieving Data
5820:
5821: X<store()>X<cstore()>X<restore()>Three of the most important functions
5822: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
5823: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
5824: is is the non-critical message twin of cstore. These functions are for
5825: handlers to store a perl hash to a user's permanent data space in an
5826: easy manner, and to retrieve it again on another call. It is expected
5827: that a handler would use this once at the beginning to retrieve data,
5828: and then again once at the end to send only the new data back.
5829:
5830: The data is stored in the user's data directory on the user's
5831: homeserver under the ID of the course.
5832:
5833: The hash that is returned by restore will have all of the previous
5834: value for all of the elements of the hash.
5835:
5836: Example:
5837:
5838: #creating a hash
5839: my %hash;
5840: $hash{'foo'}='bar';
5841:
5842: #storing it
5843: &Apache::lonnet::cstore(\%hash);
5844:
5845: #changing a value
5846: $hash{'foo'}='notbar';
5847:
5848: #adding a new value
5849: $hash{'bar'}='foo';
5850: &Apache::lonnet::cstore(\%hash);
5851:
5852: #retrieving the hash
5853: my %history=&Apache::lonnet::restore();
5854:
5855: #print the hash
5856: foreach my $key (sort(keys(%history))) {
5857: print("\%history{$key} = $history{$key}");
5858: }
5859:
5860: Will print out:
1.191 harris41 5861:
1.394 bowersj2 5862: %history{1:foo} = bar
5863: %history{1:keys} = foo:timestamp
5864: %history{1:timestamp} = 990455579
5865: %history{2:bar} = foo
5866: %history{2:foo} = notbar
5867: %history{2:keys} = foo:bar:timestamp
5868: %history{2:timestamp} = 990455580
5869: %history{bar} = foo
5870: %history{foo} = notbar
5871: %history{timestamp} = 990455580
5872: %history{version} = 2
5873:
5874: Note that the special hash entries C<keys>, C<version> and
5875: C<timestamp> were added to the hash. C<version> will be equal to the
5876: total number of versions of the data that have been stored. The
5877: C<timestamp> attribute will be the UNIX time the hash was
5878: stored. C<keys> is available in every historical section to list which
5879: keys were added or changed at a specific historical revision of a
5880: hash.
5881:
5882: B<Warning>: do not store the hash that restore returns directly. This
5883: will cause a mess since it will restore the historical keys as if the
5884: were new keys. I.E. 1:foo will become 1:1:foo etc.
1.191 harris41 5885:
1.394 bowersj2 5886: Calling convention:
1.191 harris41 5887:
1.394 bowersj2 5888: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
5889: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
1.191 harris41 5890:
1.394 bowersj2 5891: For more detailed information, see lonnet specific documentation.
1.191 harris41 5892:
1.394 bowersj2 5893: =head1 RETURN MESSAGES
1.191 harris41 5894:
1.394 bowersj2 5895: =over 4
1.191 harris41 5896:
1.394 bowersj2 5897: =item * B<con_lost>: unable to contact remote host
1.191 harris41 5898:
1.394 bowersj2 5899: =item * B<con_delayed>: unable to contact remote host, message will be delivered
5900: when the connection is brought back up
1.191 harris41 5901:
1.394 bowersj2 5902: =item * B<con_failed>: unable to contact remote host and unable to save message
5903: for later delivery
1.191 harris41 5904:
1.394 bowersj2 5905: =item * B<error:>: an error a occured, a description of the error follows the :
1.191 harris41 5906:
1.394 bowersj2 5907: =item * B<no_such_host>: unable to fund a host associated with the user/domain
1.243 albertel 5908: that was requested
1.191 harris41 5909:
1.243 albertel 5910: =back
1.191 harris41 5911:
1.243 albertel 5912: =head1 PUBLIC SUBROUTINES
1.191 harris41 5913:
1.243 albertel 5914: =head2 Session Environment Functions
1.191 harris41 5915:
1.243 albertel 5916: =over 4
1.191 harris41 5917:
1.394 bowersj2 5918: =item *
5919: X<appenv()>
5920: B<appenv(%hash)>: the value of %hash is written to
5921: the user envirnoment file, and will be restored for each access this
5922: user makes during this session, also modifies the %ENV for the current
5923: process
1.191 harris41 5924:
5925: =item *
1.394 bowersj2 5926: X<delenv()>
5927: B<delenv($regexp)>: removes all items from the session
5928: environment file that matches the regular expression in $regexp. The
5929: values are also delted from the current processes %ENV.
1.191 harris41 5930:
1.243 albertel 5931: =back
5932:
5933: =head2 User Information
1.191 harris41 5934:
1.243 albertel 5935: =over 4
1.191 harris41 5936:
5937: =item *
1.394 bowersj2 5938: X<queryauthenticate()>
5939: B<queryauthenticate($uname,$udom)>: try to determine user's current
1.191 harris41 5940: authentication scheme
5941:
5942: =item *
1.394 bowersj2 5943: X<authenticate()>
5944: B<authenticate($uname,$upass,$udom)>: try to
5945: authenticate user from domain's lib servers (first use the current
5946: one). C<$upass> should be the users password.
1.191 harris41 5947:
5948: =item *
1.394 bowersj2 5949: X<homeserver()>
5950: B<homeserver($uname,$udom)>: find the server which has
5951: the user's directory and files (there must be only one), this caches
5952: the answer, and also caches if there is a borken connection.
1.191 harris41 5953:
5954: =item *
1.394 bowersj2 5955: X<idget()>
5956: B<idget($udom,@ids)>: find the usernames behind a list of IDs
5957: (IDs are a unique resource in a domain, there must be only 1 ID per
5958: username, and only 1 username per ID in a specific domain) (returns
5959: hash: id=>name,id=>name)
1.191 harris41 5960:
5961: =item *
1.394 bowersj2 5962: X<idrget()>
5963: B<idrget($udom,@unames)>: find the IDs behind a list of
5964: usernames (returns hash: name=>id,name=>id)
1.191 harris41 5965:
5966: =item *
1.394 bowersj2 5967: X<idput()>
5968: B<idput($udom,%ids)>: store away a list of names and associated IDs
1.191 harris41 5969:
5970: =item *
1.394 bowersj2 5971: X<rolesinit()>
5972: B<rolesinit($udom,$username,$authhost)>: get user privileges
1.243 albertel 5973:
5974: =item *
1.551 albertel 5975: X<getsection()>
5976: B<getsection($udom,$uname,$cname)>: finds the section of student in the
1.243 albertel 5977: course $cname, return section name/number or '' for "not in course"
5978: and '-1' for "no section"
5979:
5980: =item *
1.394 bowersj2 5981: X<userenvironment()>
5982: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
1.243 albertel 5983: passed in @what from the requested user's environment, returns a hash
5984:
5985: =back
5986:
5987: =head2 User Roles
5988:
5989: =over 4
5990:
5991: =item *
5992:
5993: allowed($priv,$uri) : check for a user privilege; returns codes for allowed
5994: actions
5995: F: full access
5996: U,I,K: authentication modes (cxx only)
5997: '': forbidden
5998: 1: user needs to choose course
5999: 2: browse allowed
6000:
6001: =item *
6002:
6003: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
6004: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
6005: and course level
6006:
6007: =item *
6008:
6009: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
6010: explanation of a user role term
6011:
6012: =back
6013:
6014: =head2 User Modification
6015:
6016: =over 4
6017:
6018: =item *
6019:
6020: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
6021: user for the level given by URL. Optional start and end dates (leave empty
6022: string or zero for "no date")
1.191 harris41 6023:
6024: =item *
6025:
1.243 albertel 6026: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
6027: change a users, password, possible return values are: ok,
6028: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
6029: refused
1.191 harris41 6030:
6031: =item *
6032:
1.243 albertel 6033: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
1.191 harris41 6034:
6035: =item *
6036:
1.243 albertel 6037: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
6038: modify user
1.191 harris41 6039:
6040: =item *
6041:
1.286 matthew 6042: modifystudent
6043:
6044: modify a students enrollment and identification information.
6045: The course id is resolved based on the current users environment.
6046: This means the envoking user must be a course coordinator or otherwise
6047: associated with a course.
6048:
1.297 matthew 6049: This call is essentially a wrapper for lonnet::modifyuser and
6050: lonnet::modify_student_enrollment
1.286 matthew 6051:
6052: Inputs:
6053:
6054: =over 4
6055:
6056: =item B<$udom> Students loncapa domain
6057:
6058: =item B<$uname> Students loncapa login name
6059:
6060: =item B<$uid> Students id/student number
6061:
6062: =item B<$umode> Students authentication mode
6063:
6064: =item B<$upass> Students password
6065:
6066: =item B<$first> Students first name
6067:
6068: =item B<$middle> Students middle name
6069:
6070: =item B<$last> Students last name
6071:
6072: =item B<$gene> Students generation
6073:
6074: =item B<$usec> Students section in course
6075:
6076: =item B<$end> Unix time of the roles expiration
6077:
6078: =item B<$start> Unix time of the roles start date
6079:
6080: =item B<$forceid> If defined, allow $uid to be changed
6081:
6082: =item B<$desiredhome> server to use as home server for student
6083:
6084: =back
1.297 matthew 6085:
6086: =item *
6087:
6088: modify_student_enrollment
6089:
6090: Change a students enrollment status in a class. The environment variable
6091: 'role.request.course' must be defined for this function to proceed.
6092:
6093: Inputs:
6094:
6095: =over 4
6096:
6097: =item $udom, students domain
6098:
6099: =item $uname, students name
6100:
6101: =item $uid, students user id
6102:
6103: =item $first, students first name
6104:
6105: =item $middle
6106:
6107: =item $last
6108:
6109: =item $gene
6110:
6111: =item $usec
6112:
6113: =item $end
6114:
6115: =item $start
6116:
6117: =back
6118:
1.191 harris41 6119:
6120: =item *
6121:
1.243 albertel 6122: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
6123: custom role; give a custom role to a user for the level given by URL. Specify
6124: name and domain of role author, and role name
1.191 harris41 6125:
6126: =item *
6127:
1.243 albertel 6128: revokerole($udom,$uname,$url,$role) : revoke a role for url
1.191 harris41 6129:
6130: =item *
6131:
1.243 albertel 6132: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
6133:
6134: =back
6135:
6136: =head2 Course Infomation
6137:
6138: =over 4
1.191 harris41 6139:
6140: =item *
6141:
1.243 albertel 6142: coursedescription($courseid) : course description
1.191 harris41 6143:
6144: =item *
6145:
1.243 albertel 6146: courseresdata($coursenum,$coursedomain,@which) : request for current
6147: parameter setting for a specific course, @what should be a list of
6148: parameters to ask about. This routine caches answers for 5 minutes.
6149:
6150: =back
6151:
6152: =head2 Course Modification
6153:
6154: =over 4
1.191 harris41 6155:
6156: =item *
6157:
1.243 albertel 6158: writecoursepref($courseid,%prefs) : write preferences (environment
6159: database) for a course
1.191 harris41 6160:
6161: =item *
6162:
1.243 albertel 6163: createcourse($udom,$description,$url) : make/modify course
6164:
6165: =back
6166:
6167: =head2 Resource Subroutines
6168:
6169: =over 4
1.191 harris41 6170:
6171: =item *
6172:
1.243 albertel 6173: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
1.191 harris41 6174:
6175: =item *
6176:
1.243 albertel 6177: repcopy($filename) : subscribes to the requested file, and attempts to
6178: replicate from the owning library server, Might return
1.607 raeburn 6179: 'unavailable', 'not_found', 'forbidden', 'ok', or
6180: 'bad_request', also attempts to grab the metadata for the
1.243 albertel 6181: resource. Expects the local filesystem pathname
6182: (/home/httpd/html/res/....)
6183:
6184: =back
6185:
6186: =head2 Resource Information
6187:
6188: =over 4
1.191 harris41 6189:
6190: =item *
6191:
1.243 albertel 6192: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
6193: a vairety of different possible values, $varname should be a request
6194: string, and the other parameters can be used to specify who and what
6195: one is asking about.
6196:
6197: Possible values for $varname are environment.lastname (or other item
6198: from the envirnment hash), user.name (or someother aspect about the
6199: user), resource.0.maxtries (or some other part and parameter of a
6200: resource)
1.204 albertel 6201:
6202: =item *
6203:
1.243 albertel 6204: directcondval($number) : get current value of a condition; reads from a state
6205: string
1.204 albertel 6206:
6207: =item *
6208:
1.243 albertel 6209: condval($condidx) : value of condition index based on state
1.204 albertel 6210:
6211: =item *
6212:
1.243 albertel 6213: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
6214: resource's metadata, $what should be either a specific key, or either
6215: 'keys' (to get a list of possible keys) or 'packages' to get a list of
6216: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
6217:
6218: this function automatically caches all requests
1.191 harris41 6219:
6220: =item *
6221:
1.243 albertel 6222: metadata_query($query,$custom,$customshow) : make a metadata query against the
6223: network of library servers; returns file handle of where SQL and regex results
6224: will be stored for query
1.191 harris41 6225:
6226: =item *
6227:
1.243 albertel 6228: symbread($filename) : return symbolic list entry (filename argument optional);
6229: returns the data handle
1.191 harris41 6230:
6231: =item *
6232:
1.243 albertel 6233: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
1.582 albertel 6234: a possible symb for the URL in $thisfn, and if is an encryypted
6235: resource that the user accessed using /enc/ returns a 1 on success, 0
6236: on failure, user must be in a course, as it assumes the existance of
6237: the course initial hash, and uses $ENV('request.course.id'}
1.243 albertel 6238:
1.191 harris41 6239:
6240: =item *
6241:
1.243 albertel 6242: symbclean($symb) : removes versions numbers from a symb, returns the
6243: cleaned symb
1.191 harris41 6244:
6245: =item *
6246:
1.243 albertel 6247: is_on_map($uri) : checks if the $uri is somewhere on the current
6248: course map, user must be in a course for it to work.
1.191 harris41 6249:
6250: =item *
6251:
1.243 albertel 6252: numval($salt) : return random seed value (addend for rndseed)
1.191 harris41 6253:
6254: =item *
6255:
1.243 albertel 6256: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
6257: a random seed, all arguments are optional, if they aren't sent it uses the
6258: environment to derive them. Note: if symb isn't sent and it can't get one
6259: from &symbread it will use the current time as its return value
1.191 harris41 6260:
6261: =item *
6262:
1.243 albertel 6263: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
6264: unfakeable, receipt
1.191 harris41 6265:
6266: =item *
6267:
1.243 albertel 6268: receipt() : API to ireceipt working off of ENV values; given out to users
1.191 harris41 6269:
6270: =item *
6271:
1.243 albertel 6272: countacc($url) : count the number of accesses to a given URL
1.191 harris41 6273:
6274: =item *
6275:
1.243 albertel 6276: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
1.191 harris41 6277:
6278: =item *
6279:
1.243 albertel 6280: checkin($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 $tcrsid)
1.191 harris41 6281:
6282: =item *
6283:
1.243 albertel 6284: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
1.191 harris41 6285:
6286: =item *
6287:
1.243 albertel 6288: devalidate($symb) : devalidate temporary spreadsheet calculations,
6289: forcing spreadsheet to reevaluate the resource scores next time.
6290:
6291: =back
6292:
6293: =head2 Storing/Retreiving Data
6294:
6295: =over 4
1.191 harris41 6296:
6297: =item *
6298:
1.243 albertel 6299: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
6300: for this url; hashref needs to be given and should be a \%hashname; the
6301: remaining args aren't required and if they aren't passed or are '' they will
6302: be derived from the ENV
1.191 harris41 6303:
6304: =item *
6305:
1.243 albertel 6306: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
6307: uses critical subroutine
1.191 harris41 6308:
6309: =item *
6310:
1.243 albertel 6311: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
6312: all args are optional
1.191 harris41 6313:
6314: =item *
6315:
1.243 albertel 6316: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
6317: works very similar to store/cstore, but all data is stored in a
6318: temporary location and can be reset using tmpreset, $storehash should
6319: be a hash reference, returns nothing on success
1.191 harris41 6320:
6321: =item *
6322:
1.243 albertel 6323: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
6324: similar to restore, but all data is stored in a temporary location and
6325: can be reset using tmpreset. Returns a hash of values on success,
6326: error string otherwise.
1.191 harris41 6327:
6328: =item *
6329:
1.243 albertel 6330: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
6331: deltes all keys for $symb form the temporary storage hash.
1.191 harris41 6332:
6333: =item *
6334:
1.243 albertel 6335: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
6336: reference filled in from namesp ($udom and $uname are optional)
1.191 harris41 6337:
6338: =item *
6339:
1.243 albertel 6340: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
6341: namesp ($udom and $uname are optional)
1.191 harris41 6342:
6343: =item *
6344:
1.243 albertel 6345: dump($namespace,$udom,$uname,$regexp) :
6346: dumps the complete (or key matching regexp) namespace into a hash
6347: ($udom, $uname and $regexp are optional)
1.449 matthew 6348:
6349: =item *
6350:
6351: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
6352: $store can be a scalar, an array reference, or if the amount to be
6353: incremented is > 1, a hash reference.
6354:
6355: ($udom and $uname are optional)
1.191 harris41 6356:
6357: =item *
6358:
1.243 albertel 6359: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
6360: ($udom and $uname are optional)
1.191 harris41 6361:
6362: =item *
6363:
1.524 raeburn 6364: putstore($namespace,$storehash,$udomain,$uname) : stores hash in namesp
6365: keys used in storehash include version information (e.g., 1:$symb:message etc.) as
6366: used in records written by &store and retrieved by &restore. This function
6367: was created for use in editing discussion posts, without incrementing the
6368: version number included in the key for a particular post. The colon
6369: separated list of attribute names (e.g., the value associated with the key
6370: 1:keys:$symb) is also generated and passed in the ampersand separated
6371: items sent to lonnet::reply().
6372:
6373: =item *
6374:
1.243 albertel 6375: cput($namespace,$storehash,$udom,$uname) : critical put
6376: ($udom and $uname are optional)
1.191 harris41 6377:
6378: =item *
6379:
1.243 albertel 6380: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
6381: reference filled in from namesp (encrypts the return communication)
6382: ($udom and $uname are optional)
1.191 harris41 6383:
6384: =item *
6385:
1.243 albertel 6386: log($udom,$name,$home,$message) : write to permanent log for user; use
6387: critical subroutine
6388:
6389: =back
6390:
6391: =head2 Network Status Functions
6392:
6393: =over 4
1.191 harris41 6394:
6395: =item *
6396:
6397: dirlist($uri) : return directory list based on URI
6398:
6399: =item *
6400:
1.243 albertel 6401: spareserver() : find server with least workload from spare.tab
6402:
6403: =back
6404:
6405: =head2 Apache Request
6406:
6407: =over 4
1.191 harris41 6408:
6409: =item *
6410:
1.243 albertel 6411: ssi($url,%hash) : server side include, does a complete request cycle on url to
6412: localhost, posts hash
6413:
6414: =back
6415:
6416: =head2 Data to String to Data
6417:
6418: =over 4
1.191 harris41 6419:
6420: =item *
6421:
1.243 albertel 6422: hash2str(%hash) : convert a hash into a string complete with escaping and '='
6423: and '&' separators, supports elements that are arrayrefs and hashrefs
1.191 harris41 6424:
6425: =item *
6426:
1.243 albertel 6427: hashref2str($hashref) : convert a hashref into a string complete with
6428: escaping and '=' and '&' separators, supports elements that are
6429: arrayrefs and hashrefs
1.191 harris41 6430:
6431: =item *
6432:
1.243 albertel 6433: arrayref2str($arrayref) : convert an arrayref into a string complete
6434: with escaping and '&' separators, supports elements that are arrayrefs
6435: and hashrefs
1.191 harris41 6436:
6437: =item *
6438:
1.243 albertel 6439: str2hash($string) : convert string to hash using unescaping and
6440: splitting on '=' and '&', supports elements that are arrayrefs and
6441: hashrefs
1.191 harris41 6442:
6443: =item *
6444:
1.243 albertel 6445: str2array($string) : convert string to hash using unescaping and
6446: splitting on '&', supports elements that are arrayrefs and hashrefs
6447:
6448: =back
6449:
6450: =head2 Logging Routines
6451:
6452: =over 4
6453:
6454: These routines allow one to make log messages in the lonnet.log and
6455: lonnet.perm logfiles.
1.191 harris41 6456:
6457: =item *
6458:
1.243 albertel 6459: logtouch() : make sure the logfile, lonnet.log, exists
1.191 harris41 6460:
6461: =item *
6462:
1.243 albertel 6463: logthis() : append message to the normal lonnet.log file, it gets
6464: preiodically rolled over and deleted.
1.191 harris41 6465:
6466: =item *
6467:
1.243 albertel 6468: logperm() : append a permanent message to lonnet.perm.log, this log
6469: file never gets deleted by any automated portion of the system, only
6470: messages of critical importance should go in here.
6471:
6472: =back
6473:
6474: =head2 General File Helper Routines
6475:
6476: =over 4
1.191 harris41 6477:
6478: =item *
6479:
1.481 raeburn 6480: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
6481: (a) files in /uploaded
6482: (i) If a local copy of the file exists -
6483: compares modification date of local copy with last-modified date for
6484: definitive version stored on home server for course. If local copy is
6485: stale, requests a new version from the home server and stores it.
6486: If the original has been removed from the home server, then local copy
6487: is unlinked.
6488: (ii) If local copy does not exist -
6489: requests the file from the home server and stores it.
6490:
6491: If $caller is 'uploadrep':
6492: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
6493: for request for files originally uploaded via DOCS.
6494: - returns 'ok' if fresh local copy now available, -1 otherwise.
6495:
6496: Otherwise:
6497: This indicates a call from the content generation phase of the request.
6498: - returns the entire contents of the file or -1.
6499:
6500: (b) files in /res
6501: - returns the entire contents of a file or -1;
6502: it properly subscribes to and replicates the file if neccessary.
1.191 harris41 6503:
6504: =item *
6505:
1.243 albertel 6506: filelocation($dir,$file) : returns file system location of a file
6507: based on URI; meant to be "fairly clean" absolute reference, $dir is a
6508: directory that relative $file lookups are to looked in ($dir of /a/dir
6509: and a file of ../bob will become /a/bob)
1.191 harris41 6510:
6511: =item *
6512:
6513: hreflocation($dir,$file) : returns file system location or a URL; same as
6514: filelocation except for hrefs
6515:
6516: =item *
6517:
6518: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
6519:
1.243 albertel 6520: =back
6521:
1.608 albertel 6522: =head2 Usererfile file routines (/uploaded*)
6523:
6524: =over 4
6525:
6526: =item *
6527:
6528: userfileupload(): main rotine for putting a file in a user or course's
6529: filespace, arguments are,
6530:
6531: formname - required - this is the name of the element in $ENV where the
6532: filename, and the contents of the file to create/modifed exist
6533: the filename is in $ENV{'form.'.$formname.'.filename'} and the
6534: contents of the file is located in $ENV{'form.'.$formname}
6535: coursedoc - if true, store the file in the course of the active role
6536: of the current user
6537: subdir - required - subdirectory to put the file in under ../userfiles/
6538: if undefined, it will be placed in "unknown"
6539:
6540: (This routine calls clean_filename() to remove any dangerous
6541: characters from the filename, and then calls finuserfileupload() to
6542: complete the transaction)
6543:
6544: returns either the url of the uploaded file (/uploaded/....) if successful
6545: and /adm/notfound.html if unsuccessful
6546:
6547: =item *
6548:
6549: clean_filename(): routine for cleaing a filename up for storage in
6550: userfile space, argument is:
6551:
6552: filename - proposed filename
6553:
6554: returns: the new clean filename
6555:
6556: =item *
6557:
6558: finishuserfileupload(): routine that creaes and sends the file to
6559: userspace, probably shouldn't be called directly
6560:
6561: docuname: username or courseid of destination for the file
6562: docudom: domain of user/course of destination for the file
6563: docuhome: loncapa id of the library server that is getting the file
6564: formname: same as for userfileupload()
6565: fname: filename (inculding subdirectories) for the file
6566:
6567: returns either the url of the uploaded file (/uploaded/....) if successful
6568: and /adm/notfound.html if unsuccessful
6569:
6570: =item *
6571:
6572: renameuserfile(): renames an existing userfile to a new name
6573:
6574: Args:
6575: docuname: username or courseid of destination for the file
6576: docudom: domain of user/course of destination for the file
6577: old: current file name (including any subdirs under userfiles)
6578: new: desired file name (including any subdirs under userfiles)
6579:
6580: =item *
6581:
6582: mkdiruserfile(): creates a directory is a userfiles dir
6583:
6584: Args:
6585: docuname: username or courseid of destination for the file
6586: docudom: domain of user/course of destination for the file
6587: dir: dir to create (including any subdirs under userfiles)
6588:
6589: =item *
6590:
6591: removeuserfile(): removes a file that exists in userfiles
6592:
6593: Args:
6594: docuname: username or courseid of destination for the file
6595: docudom: domain of user/course of destination for the file
6596: fname: filname to delete (including any subdirs under userfiles)
6597:
6598: =item *
6599:
6600: removeuploadedurl(): convience function for removeuserfile()
6601:
6602: Args:
6603: url: a full /uploaded/... url to delete
6604:
6605: =back
6606:
1.243 albertel 6607: =head2 HTTP Helper Routines
6608:
6609: =over 4
6610:
1.191 harris41 6611: =item *
6612:
6613: escape() : unpack non-word characters into CGI-compatible hex codes
6614:
6615: =item *
6616:
6617: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
6618:
1.243 albertel 6619: =back
6620:
6621: =head1 PRIVATE SUBROUTINES
6622:
6623: =head2 Underlying communication routines (Shouldn't call)
6624:
6625: =over 4
6626:
6627: =item *
6628:
6629: subreply() : tries to pass a message to lonc, returns con_lost if incapable
6630:
6631: =item *
6632:
6633: reply() : uses subreply to send a message to remote machine, logs all failures
6634:
6635: =item *
6636:
6637: critical() : passes a critical message to another server; if cannot
6638: get through then place message in connection buffer directory and
6639: returns con_delayed, if incapable of saving message, returns
6640: con_failed
6641:
6642: =item *
6643:
6644: reconlonc() : tries to reconnect lonc client processes.
6645:
6646: =back
6647:
6648: =head2 Resource Access Logging
6649:
6650: =over 4
6651:
6652: =item *
6653:
6654: flushcourselogs() : flush (save) buffer logs and access logs
6655:
6656: =item *
6657:
6658: courselog($what) : save message for course in hash
6659:
6660: =item *
6661:
6662: courseacclog($what) : save message for course using &courselog(). Perform
6663: special processing for specific resource types (problems, exams, quizzes, etc).
6664:
1.191 harris41 6665: =item *
6666:
6667: goodbye() : flush course logs and log shutting down; it is called in srm.conf
6668: as a PerlChildExitHandler
1.243 albertel 6669:
6670: =back
6671:
6672: =head2 Other
6673:
6674: =over 4
6675:
6676: =item *
6677:
6678: symblist($mapname,%newhash) : update symbolic storage links
1.191 harris41 6679:
6680: =back
6681:
6682: =cut
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