Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.169
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
1.169 ! harris41 4: # 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
! 5: # 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
! 6: # 11/8,11/16,11/18,11/22,11/23,12/22,
! 7: # 01/06,01/13,02/24,02/28,02/29,
! 8: # 03/01,03/02,03/06,03/07,03/13,
! 9: # 04/05,05/29,05/31,06/01,
! 10: # 06/05,06/26 Gerd Kortemeyer
! 11: # 06/26 Ben Tyszka
! 12: # 06/30,07/15,07/17,07/18,07/20,07/21,07/22,07/25 Gerd Kortemeyer
! 13: # 08/14 Ben Tyszka
! 14: # 08/22,08/28,08/31,09/01,09/02,09/04,09/05,09/25,09/28,09/30 Gerd Kortemeyer
! 15: # 10/04 Gerd Kortemeyer
! 16: # 10/04 Guy Albertelli
! 17: # 10/06,10/09,10/10,10/11,10/14,10/20,10/23,10/25,10/26,10/27,10/28,10/29,
! 18: # 10/30,10/31,
! 19: # 11/2,11/14,11/15,11/16,11/20,11/21,11/22,11/25,11/27,
! 20: # 12/02,12/12,12/13,12/14,12/28,12/29 Gerd Kortemeyer
! 21: # 05/01/01 Guy Albertelli
! 22: # 05/01,06/01,09/01 Gerd Kortemeyer
! 23: # 09/01 Guy Albertelli
! 24: # 09/01,10/01,11/01 Gerd Kortemeyer
! 25: # YEAR=2001
! 26: # 02/27/01 Scott Harrison
! 27: # 3/2 Gerd Kortemeyer
! 28: # 3/15,3/19 Scott Harrison
! 29: # 3/19,3/20 Gerd Kortemeyer
! 30: # 3/22,3/27,4/2,4/16,4/17 Scott Harrison
! 31: # 5/26,5/28 Gerd Kortemeyer
! 32: # 5/30 H. K. Ng
! 33: # 6/1 Gerd Kortemeyer
! 34: # July Guy Albertelli
! 35: # 8/4,8/7,8/8,8/9,8/11,8/16,8/17,8/18,8/20,8/23,9/20,9/21,9/26,
! 36: # 10/2 Gerd Kortemeyer
! 37: # 10/5,10/10,11/13,11/15 Scott Harrison
! 38: #
! 39: # $Id: lonnet.pm,v 1.168 2001/11/05 22:48:19 albertel Exp $
! 40: ###
! 41:
1.12 www 42: # Functions for use by content handlers:
43: #
1.112 harris41 44: # metadata_query(sql-query-string,custom-metadata-regex) :
45: # returns file handle of where sql and
46: # regex results will be stored for query
1.12 www 47: # plaintext(short) : plain text explanation of short term
1.25 www 48: # fileembstyle(ext) : embed style in page for file extension
49: # filedescription(ext) : descriptor text for file extension
1.29 www 50: # allowed(short,url) : returns codes for allowed actions
51: # F: full access
52: # U,I,K: authentication modes (cxx only)
53: # '': forbidden
54: # 1: user needs to choose course
55: # 2: browse allowed
1.21 www 56: # definerole(rolename,sys,dom,cou) : define a custom role rolename
1.103 harris41 57: # set privileges in format of lonTabs/roles.tab for
1.21 www 58: # system, domain and course level,
59: # assignrole(udom,uname,url,role,end,start) : give a role to a user for the
60: # level given by url. Optional start and end dates
61: # (leave empty string or zero for "no date")
62: # assigncustomrole (udom,uname,url,rdom,rnam,rolename,end,start) : give a
63: # custom role to a user for the level given by url.
64: # Specify name and domain of role author, and role name
65: # revokerole (udom,uname,url,role) : Revoke a role for url
66: # revokecustomrole (udom,uname,url,rdom,rnam,rolename) : Revoke a custom role
1.24 www 67: # appenv(hash) : adds hash to session environment
1.56 www 68: # delenv(varname) : deletes all environment entries starting with varname
1.124 www 69: # store(hashref,symb,courseid,udom,uname)
1.122 albertel 70: # : stores hash permanently for this url
71: # hashref needs to be given, and should be a \%hashname
72: # the remaining args aren't required and if they aren't
73: # passed or are '' they will be derived from the ENV
1.124 www 74: # cstore(hashref,symb,courseid,udom,uname)
1.122 albertel 75: # : same as store but uses the critical interface to
76: # guarentee a store
1.124 www 77: # restore(symb,courseid,udom,uname)
1.122 albertel 78: # : returns hash for this symb, all args are optional
1.124 www 79: # if they aren't given they will be derived from the
80: # current enviroment
1.133 albertel 81: #
82: #
1.134 albertel 83: # for the next 6 functions udom and uname are optional
1.133 albertel 84: # if supplied they use udom as the domain and uname
85: # as the username for the function (supply a courseid
86: # for the uname if you want a course database)
87: # if not supplied it uses %ENV and looks at
88: # user. attribute for the values
89: #
90: # eget(namesp,arrayref,udom,uname)
91: # : returns hash with keys from array reference filled
92: # in from namesp (encrypts the return communication)
1.131 albertel 93: # get(namesp,arrayref,udom,uname)
94: # : returns hash with keys from array reference filled
95: # in from namesp
1.133 albertel 96: # dump(namesp,udom,uname) : dumps the complete namespace into a hash
97: # del(namesp,array,udom,uname) : deletes keys out of array from namesp
1.134 albertel 98: # put(namesp,hash,udom,uname) : stores hash in namesp
99: # cput(namesp,hash,udom,uname) : critical put
1.133 albertel 100: #
101: #
1.23 www 102: # ssi(url,hash) : does a complete request cycle on url to localhost, posts
103: # hash
1.34 www 104: # coursedescription(id) : returns and caches course description for id
1.17 www 105: # repcopy(filename) : replicate file
106: # dirlist(url) : gets a directory listing
1.40 www 107: # directcondval(index) : reading condition value of single condition from
108: # state string
1.28 www 109: # condval(index) : value of condition index based on state
1.58 www 110: # EXT(name) : value of a variable
1.31 www 111: # symblist(map,hash) : Updates symbolic storage links
1.44 www 112: # symbread([filename]) : returns the data handle (filename optional)
1.155 albertel 113: # rndseed([symb,courseid,domain,uname])
114: # : returns a random seed, all arguments are optional,
115: # if they aren't sent it use the environment to derive
116: # them
117: # Note: if symb isn't sent and it can't get one from
118: # &symbread it will use the current time as it's return
1.76 www 119: # receipt() : returns a receipt to be given out to users
1.36 albertel 120: # getfile(filename) : returns the contents of filename, or a -1 if it can't
121: # be found, replicates and subscribes to the file
1.121 harris41 122: # filelocation(dir,file) : returns a fairly clean absolute reference to file
1.36 albertel 123: # from the directory dir
1.46 www 124: # hreflocation(dir,file) : same as filelocation, but for hrefs
1.47 www 125: # log(domain,user,home,msg) : write to permanent log for user
1.70 www 126: # usection(domain,user,courseid) : output of section name/number or '' for
127: # "not in course" and '-1' for "no section"
128: # userenvironment(domain,user,what) : puts out any environment parameter
129: # for a user
130: # idput(domain,hash) : writes IDs for users from hash (name=>id,name=>id)
131: # idget(domain,array): returns hash with usernames (id=>name,id=>name) for
132: # an array of IDs
133: # idrget(domain,array): returns hash with IDs for usernames (name=>id,...) for
134: # an array of names
1.73 www 135: # metadata(file,entry): returns the metadata entry for a file. entry='keys'
136: # returns a comma separated list of keys
1.12 www 137: #
1.128 www 138:
1.1 albertel 139: package Apache::lonnet;
140:
141: use strict;
142: use Apache::File;
1.8 www 143: use LWP::UserAgent();
1.15 www 144: use HTTP::Headers;
1.11 www 145: use vars
1.157 www 146: qw(%perlvar %hostname %homecache %hostip %spareid %hostdom %libserv %pr %prp %fe %fd $readit %metacache %packagetab %courselogs);
1.1 albertel 147: use IO::Socket;
1.31 www 148: use GDBM_File;
1.8 www 149: use Apache::Constants qw(:common :http);
1.71 www 150: use HTML::TokeParser;
1.88 www 151: use Fcntl qw(:flock);
1.1 albertel 152:
153: # --------------------------------------------------------------------- Logging
154:
1.163 harris41 155: sub logtouch {
156: my $execdir=$perlvar{'lonDaemons'};
157: unless (-e "$execdir/logs/lonnet.log") {
158: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
159: close $fh;
160: }
161: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
162: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
163: }
164:
1.1 albertel 165: sub logthis {
166: my $message=shift;
167: my $execdir=$perlvar{'lonDaemons'};
168: my $now=time;
169: my $local=localtime($now);
1.162 harris41 170: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
171: print $fh "$local ($$): $message\n";
1.1 albertel 172: return 1;
173: }
174:
175: sub logperm {
176: my $message=shift;
177: my $execdir=$perlvar{'lonDaemons'};
178: my $now=time;
179: my $local=localtime($now);
1.162 harris41 180: my $fh=Apache::File->new(">>$execdir/logs/lonnet.perm.log");
181: print $fh "$now:$message:$local\n";
1.1 albertel 182: return 1;
183: }
184:
185: # -------------------------------------------------- Non-critical communication
186: sub subreply {
187: my ($cmd,$server)=@_;
188: my $peerfile="$perlvar{'lonSockDir'}/$server";
189: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
190: Type => SOCK_STREAM,
191: Timeout => 10)
192: or return "con_lost";
193: print $client "$cmd\n";
194: my $answer=<$client>;
1.9 www 195: if (!$answer) { $answer="con_lost"; }
1.1 albertel 196: chomp($answer);
197: return $answer;
198: }
199:
200: sub reply {
201: my ($cmd,$server)=@_;
202: my $answer=subreply($cmd,$server);
203: if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
1.65 www 204: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.12 www 205: &logthis("<font color=blue>WARNING:".
206: " $cmd to $server returned $answer</font>");
207: }
1.1 albertel 208: return $answer;
209: }
210:
211: # ----------------------------------------------------------- Send USR1 to lonc
212:
213: sub reconlonc {
214: my $peerfile=shift;
215: &logthis("Trying to reconnect for $peerfile");
216: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
217: if (my $fh=Apache::File->new("$loncfile")) {
218: my $loncpid=<$fh>;
219: chomp($loncpid);
220: if (kill 0 => $loncpid) {
221: &logthis("lonc at pid $loncpid responding, sending USR1");
222: kill USR1 => $loncpid;
223: sleep 1;
224: if (-e "$peerfile") { return; }
225: &logthis("$peerfile still not there, give it another try");
226: sleep 5;
227: if (-e "$peerfile") { return; }
1.12 www 228: &logthis(
229: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 230: } else {
1.12 www 231: &logthis(
232: "<font color=blue>WARNING:".
233: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 234: }
235: } else {
1.12 www 236: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 237: }
238: }
239:
240: # ------------------------------------------------------ Critical communication
1.12 www 241:
1.1 albertel 242: sub critical {
243: my ($cmd,$server)=@_;
1.89 www 244: unless ($hostname{$server}) {
245: &logthis("<font color=blue>WARNING:".
246: " Critical message to unknown server ($server)</font>");
247: return 'no_such_host';
248: }
1.1 albertel 249: my $answer=reply($cmd,$server);
250: if ($answer eq 'con_lost') {
251: my $pingreply=reply('ping',$server);
252: &reconlonc("$perlvar{'lonSockDir'}/$server");
253: my $pongreply=reply('pong',$server);
254: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
255: $answer=reply($cmd,$server);
256: if ($answer eq 'con_lost') {
257: my $now=time;
258: my $middlename=$cmd;
1.5 www 259: $middlename=substr($middlename,0,16);
1.1 albertel 260: $middlename=~s/\W//g;
261: my $dfilename=
262: "$perlvar{'lonSockDir'}/delayed/$now.$middlename.$server";
263: {
264: my $dfh;
265: if ($dfh=Apache::File->new(">$dfilename")) {
1.7 www 266: print $dfh "$cmd\n";
1.1 albertel 267: }
268: }
269: sleep 2;
270: my $wcmd='';
271: {
272: my $dfh;
273: if ($dfh=Apache::File->new("$dfilename")) {
274: $wcmd=<$dfh>;
275: }
276: }
277: chomp($wcmd);
1.7 www 278: if ($wcmd eq $cmd) {
1.12 www 279: &logthis("<font color=blue>WARNING: ".
280: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 281: &logperm("D:$server:$cmd");
282: return 'con_delayed';
283: } else {
1.12 www 284: &logthis("<font color=red>CRITICAL:"
285: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 286: &logperm("F:$server:$cmd");
287: return 'con_failed';
288: }
289: }
290: }
291: return $answer;
292: }
293:
1.5 www 294: # ---------------------------------------------------------- Append Environment
295:
296: sub appenv {
1.6 www 297: my %newenv=@_;
1.35 www 298: map {
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: }
307: } keys %newenv;
1.95 www 308:
309: my $lockfh;
310: unless ($lockfh=Apache::File->new("$ENV{'user.environment'}")) {
1.97 www 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: '.$!);
316: $lockfh->close();
317: return 'error: '.$!;
318: }
319:
1.6 www 320: my @oldenv;
321: {
322: my $fh;
323: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
1.97 www 324: return 'error: '.$!;
1.6 www 325: }
326: @oldenv=<$fh>;
1.89 www 327: $fh->close();
1.6 www 328: }
329: for (my $i=0; $i<=$#oldenv; $i++) {
330: chomp($oldenv[$i]);
1.9 www 331: if ($oldenv[$i] ne '') {
332: my ($name,$value)=split(/=/,$oldenv[$i]);
1.24 www 333: unless (defined($newenv{$name})) {
334: $newenv{$name}=$value;
335: }
1.9 www 336: }
1.6 www 337: }
338: {
339: my $fh;
340: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
341: return 'error';
342: }
343: my $newname;
1.93 www 344: foreach $newname (keys %newenv) {
1.6 www 345: print $fh "$newname=$newenv{$newname}\n";
346: }
1.86 albertel 347: $fh->close();
1.56 www 348: }
1.95 www 349:
350: $lockfh->close();
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: {
365: my $fh;
366: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
367: return 'error';
368: }
1.89 www 369: unless (flock($fh,LOCK_SH)) {
370: &logthis("<font color=blue>WARNING: ".
371: 'Could not obtain shared lock in delenv: '.$!);
372: $fh->close();
373: return 'error: '.$!;
374: }
1.56 www 375: @oldenv=<$fh>;
1.89 www 376: $fh->close();
1.56 www 377: }
378: {
379: my $fh;
380: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
381: return 'error';
382: }
1.89 www 383: unless (flock($fh,LOCK_EX)) {
384: &logthis("<font color=blue>WARNING: ".
385: 'Could not obtain exclusive lock in delenv: '.$!);
386: $fh->close();
387: return 'error: '.$!;
388: }
1.56 www 389: map {
390: unless ($_=~/^$delthis/) { print $fh $_; }
391: } @oldenv;
1.87 www 392: $fh->close();
1.5 www 393: }
394: return 'ok';
395: }
1.1 albertel 396:
397: # ------------------------------ Find server with least workload from spare.tab
1.11 www 398:
1.1 albertel 399: sub spareserver {
400: my $tryserver;
401: my $spareserver='';
402: my $lowestserver=100;
403: foreach $tryserver (keys %spareid) {
404: my $answer=reply('load',$tryserver);
405: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
406: $spareserver="http://$hostname{$tryserver}";
407: $lowestserver=$answer;
408: }
409: }
410: return $spareserver;
411: }
412:
1.169 ! harris41 413: # ----------------------- Try to determine user's current authentication scheme
! 414:
! 415: sub queryauthenticate {
! 416: my ($uname,$udom)=@_;
! 417: if (($perlvar{'lonRole'} eq 'library') &&
! 418: ($udom eq $perlvar{'lonDefDomain'})) {
! 419: my $answer=reply("encrypt:currentauth:$udom:$uname",
! 420: $perlvar{'lonHostID'});
! 421: unless ($answer eq 'unknown_user' or $answer eq 'refused') {
! 422: if (length($answer)) {
! 423: return $answer;
! 424: }
! 425: else {
! 426: &logthis("User $uname at $udom lacks an authentication mechanism");
! 427: return 'no_host';
! 428: }
! 429: }
! 430: }
! 431:
! 432: my $tryserver;
! 433: foreach $tryserver (keys %libserv) {
! 434: if ($hostdom{$tryserver} eq $udom) {
! 435: my $answer=reply("encrypt:currentauth:$udom:$uname",$tryserver);
! 436: unless ($answer eq 'unknown_user' or $answer eq 'refused') {
! 437: if (length($answer)) {
! 438: return $answer;
! 439: }
! 440: else {
! 441: &logthis("User $uname at $udom lacks an authentication mechanism");
! 442: return 'no_host';
! 443: }
! 444: }
! 445: }
! 446: }
! 447: &logthis("User $uname at $udom lacks an authentication mechanism");
! 448: return 'no_host';
! 449: }
! 450:
1.1 albertel 451: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 452:
1.1 albertel 453: sub authenticate {
454: my ($uname,$upass,$udom)=@_;
1.12 www 455: $upass=escape($upass);
1.1 albertel 456: if (($perlvar{'lonRole'} eq 'library') &&
457: ($udom eq $perlvar{'lonDefDomain'})) {
1.3 www 458: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$perlvar{'lonHostID'});
1.2 www 459: if ($answer =~ /authorized/) {
1.9 www 460: if ($answer eq 'authorized') {
461: &logthis("User $uname at $udom authorized by local server");
462: return $perlvar{'lonHostID'};
463: }
464: if ($answer eq 'non_authorized') {
465: &logthis("User $uname at $udom rejected by local server");
466: return 'no_host';
467: }
1.2 www 468: }
1.1 albertel 469: }
470:
471: my $tryserver;
472: foreach $tryserver (keys %libserv) {
473: if ($hostdom{$tryserver} eq $udom) {
1.10 www 474: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$tryserver);
1.1 albertel 475: if ($answer =~ /authorized/) {
1.9 www 476: if ($answer eq 'authorized') {
477: &logthis("User $uname at $udom authorized by $tryserver");
478: return $tryserver;
479: }
480: if ($answer eq 'non_authorized') {
481: &logthis("User $uname at $udom rejected by $tryserver");
482: return 'no_host';
483: }
1.1 albertel 484: }
485: }
1.9 www 486: }
487: &logthis("User $uname at $udom could not be authenticated");
1.1 albertel 488: return 'no_host';
489: }
490:
491: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 492:
1.1 albertel 493: sub homeserver {
494: my ($uname,$udom)=@_;
495:
496: my $index="$uname:$udom";
497: if ($homecache{$index}) { return "$homecache{$index}"; }
498:
499: my $tryserver;
500: foreach $tryserver (keys %libserv) {
501: if ($hostdom{$tryserver} eq $udom) {
502: my $answer=reply("home:$udom:$uname",$tryserver);
503: if ($answer eq 'found') {
504: $homecache{$index}=$tryserver;
505: return $tryserver;
506: }
507: }
508: }
509: return 'no_host';
1.70 www 510: }
511:
512: # ------------------------------------- Find the usernames behind a list of IDs
513:
514: sub idget {
515: my ($udom,@ids)=@_;
516: my %returnhash=();
517:
518: my $tryserver;
519: foreach $tryserver (keys %libserv) {
520: if ($hostdom{$tryserver} eq $udom) {
521: my $idlist=join('&',@ids);
522: $idlist=~tr/A-Z/a-z/;
523: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
524: my @answer=();
1.76 www 525: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 526: @answer=split(/\&/,$reply);
527: } ;
528: my $i;
529: for ($i=0;$i<=$#ids;$i++) {
530: if ($answer[$i]) {
531: $returnhash{$ids[$i]}=$answer[$i];
532: }
533: }
534: }
535: }
536: return %returnhash;
537: }
538:
539: # ------------------------------------- Find the IDs behind a list of usernames
540:
541: sub idrget {
542: my ($udom,@unames)=@_;
543: my %returnhash=();
544: map {
545: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
546: } @unames;
547: return %returnhash;
548: }
549:
550: # ------------------------------- Store away a list of names and associated IDs
551:
552: sub idput {
553: my ($udom,%ids)=@_;
554: my %servers=();
555: map {
556: my $uhom=&homeserver($_,$udom);
557: if ($uhom ne 'no_host') {
558: my $id=&escape($ids{$_});
559: $id=~tr/A-Z/a-z/;
560: my $unam=&escape($_);
561: if ($servers{$uhom}) {
562: $servers{$uhom}.='&'.$id.'='.$unam;
563: } else {
564: $servers{$uhom}=$id.'='.$unam;
565: }
566: &critical('put:'.$udom.':'.$unam.':environment:id='.$id,$uhom);
567: }
568: } keys %ids;
569: map {
570: &critical('idput:'.$udom.':'.$servers{$_},$_);
571: } keys %servers;
572: }
573:
574: # ------------------------------------- Find the section of student in a course
575:
576: sub usection {
577: my ($udom,$unam,$courseid)=@_;
578: $courseid=~s/\_/\//g;
579: $courseid=~s/^(\w)/\/$1/;
580: map {
581: my ($key,$value)=split(/\=/,$_);
582: $key=&unescape($key);
583: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
584: my $section=$1;
585: if ($key eq $courseid.'_st') { $section=''; }
586: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
587: my $now=time;
588: my $notactive=0;
589: if ($start) {
590: if ($now<$start) { $notactive=1; }
591: }
592: if ($end) {
593: if ($now>$end) { $notactive=1; }
594: }
595: unless ($notactive) { return $section; }
596: }
597: } split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
598: &homeserver($unam,$udom)));
599: return '-1';
600: }
601:
602: # ------------------------------------- Read an entry from a user's environment
603:
604: sub userenvironment {
605: my ($udom,$unam,@what)=@_;
606: my %returnhash=();
607: my @answer=split(/\&/,
608: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
609: &homeserver($unam,$udom)));
610: my $i;
611: for ($i=0;$i<=$#what;$i++) {
612: $returnhash{$what[$i]}=&unescape($answer[$i]);
613: }
614: return %returnhash;
1.1 albertel 615: }
616:
617: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 618:
1.1 albertel 619: sub subscribe {
620: my $fname=shift;
621: my $author=$fname;
622: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
623: my ($udom,$uname)=split(/\//,$author);
624: my $home=homeserver($uname,$udom);
625: if (($home eq 'no_host') || ($home eq $perlvar{'lonHostID'})) {
626: return 'not_found';
627: }
628: my $answer=reply("sub:$fname",$home);
1.64 www 629: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
630: $answer.=' by '.$home;
631: }
1.1 albertel 632: return $answer;
633: }
634:
1.8 www 635: # -------------------------------------------------------------- Replicate file
636:
637: sub repcopy {
638: my $filename=shift;
1.23 www 639: $filename=~s/\/+/\//g;
1.8 www 640: my $transname="$filename.in.transfer";
1.17 www 641: if ((-e $filename) || (-e $transname)) { return OK; }
1.8 www 642: my $remoteurl=subscribe($filename);
1.64 www 643: if ($remoteurl =~ /^con_lost by/) {
644: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 645: return HTTP_SERVICE_UNAVAILABLE;
646: } elsif ($remoteurl eq 'not_found') {
647: &logthis("Subscribe returned not_found: $filename");
648: return HTTP_NOT_FOUND;
1.64 www 649: } elsif ($remoteurl =~ /^rejected by/) {
650: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 651: return FORBIDDEN;
1.20 www 652: } elsif ($remoteurl eq 'directory') {
653: return OK;
1.8 www 654: } else {
655: my @parts=split(/\//,$filename);
656: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
657: if ($path ne "$perlvar{'lonDocRoot'}/res") {
658: &logthis("Malconfiguration for replication: $filename");
659: return HTTP_BAD_REQUEST;
660: }
661: my $count;
662: for ($count=5;$count<$#parts;$count++) {
663: $path.="/$parts[$count]";
664: if ((-e $path)!=1) {
665: mkdir($path,0777);
666: }
667: }
668: my $ua=new LWP::UserAgent;
669: my $request=new HTTP::Request('GET',"$remoteurl");
670: my $response=$ua->request($request,$transname);
671: if ($response->is_error()) {
672: unlink($transname);
673: my $message=$response->status_line;
1.12 www 674: &logthis("<font color=blue>WARNING:"
675: ." LWP get: $message: $filename</font>");
1.8 www 676: return HTTP_SERVICE_UNAVAILABLE;
677: } else {
1.16 www 678: if ($remoteurl!~/\.meta$/) {
679: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
680: my $mresponse=$ua->request($mrequest,$filename.'.meta');
681: if ($mresponse->is_error()) {
682: unlink($filename.'.meta');
683: &logthis(
684: "<font color=yellow>INFO: No metadata: $filename</font>");
685: }
686: }
1.8 www 687: rename($transname,$filename);
688: return OK;
689: }
690: }
691: }
692:
1.15 www 693: # --------------------------------------------------------- Server Side Include
694:
695: sub ssi {
696:
1.23 www 697: my ($fn,%form)=@_;
1.15 www 698:
699: my $ua=new LWP::UserAgent;
1.23 www 700:
701: my $request;
702:
703: if (%form) {
704: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
705: $request->content(join '&', map { "$_=$form{$_}" } keys %form);
706: } else {
707: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
708: }
709:
1.15 www 710: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
711: my $response=$ua->request($request);
712:
713: return $response->content;
714: }
715:
1.14 www 716: # ------------------------------------------------------------------------- Log
717:
718: sub log {
719: my ($dom,$nam,$hom,$what)=@_;
1.47 www 720: return critical("log:$dom:$nam:$what",$hom);
1.157 www 721: }
722:
723: # ------------------------------------------------------------------ Course Log
724:
725: sub flushcourselogs {
726: &logthis('Flushing course log buffers');
727: map {
728: my $crsid=$_;
729: if (&reply('log:'.$ENV{'course.'.$crsid.'.domain'}.':'.
730: $ENV{'course.'.$crsid.'.num'}.':'.
731: &escape($courselogs{$crsid}),
732: $ENV{'course.'.$crsid.'.home'}) eq 'ok') {
733: delete $courselogs{$crsid};
734: } else {
735: &logthis('Failed to flush log buffer for '.$crsid);
736: if (length($courselogs{$crsid})>40000) {
737: &logthis("<font color=blue>WARNING: Buffer for ".$crsid.
738: " exceeded maximum size, deleting.</font>");
739: delete $courselogs{$crsid};
740: }
741: }
742: } keys %courselogs;
743: }
744:
745: sub courselog {
746: my $what=shift;
1.158 www 747: $what=time.':'.$what;
1.157 www 748: unless ($ENV{'request.course.id'}) { return ''; }
749: if (defined $courselogs{$ENV{'request.course.id'}}) {
750: $courselogs{$ENV{'request.course.id'}}.='&'.$what;
751: } else {
752: $courselogs{$ENV{'request.course.id'}}.=$what;
753: }
754: if (length($courselogs{$ENV{'request.course.id'}})>4048) {
755: &flushcourselogs();
756: }
1.158 www 757: }
758:
759: sub courseacclog {
760: my $fnsymb=shift;
761: unless ($ENV{'request.course.id'}) { return ''; }
762: my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
763: if ($what=~/(problem|exam|quiz|assess|survey|form)$/) {
764: map {
765: if ($_=~/^form\.(.*)/) {
766: $what.=':'.$1.'='.$ENV{$_};
767: }
768: } keys %ENV;
769: }
770: &courselog($what);
1.149 www 771: }
772:
773: # ----------------------------------------------------------- Check out an item
774:
775: sub checkout {
776: my ($symb,$tuname,$tudom,$tcrsid)=@_;
777: my $now=time;
778: my $lonhost=$perlvar{'lonHostID'};
779: my $infostr=&escape(
780: $tuname.'&'.
781: $tudom.'&'.
782: $tcrsid.'&'.
783: $symb.'&'.
784: $now.'&'.$ENV{'REMOTE_ADDR'});
785: my $token=&reply('tmpput:'.$infostr,$lonhost);
1.151 www 786: if ($token=~/^error\:/) {
787: &logthis("<font color=blue>WARNING: ".
788: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
789: "</font>");
790: return '';
791: }
792:
1.149 www 793: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
794: $token=~tr/a-z/A-Z/;
795:
1.153 www 796: my %infohash=('resource.0.outtoken' => $token,
797: 'resource.0.checkouttime' => $now,
798: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
1.149 www 799:
800: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
801: return '';
1.151 www 802: } else {
803: &logthis("<font color=blue>WARNING: ".
804: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
805: "</font>");
1.149 www 806: }
807:
808: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
809: &escape('Checkout '.$infostr.' - '.
810: $token)) ne 'ok') {
811: return '';
1.151 www 812: } else {
813: &logthis("<font color=blue>WARNING: ".
814: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
815: "</font>");
1.149 www 816: }
1.151 www 817: return $token;
1.149 www 818: }
819:
820: # ------------------------------------------------------------ Check in an item
821:
822: sub checkin {
823: my $token=shift;
1.150 www 824: my $now=time;
825: my ($ta,$tb,$lonhost)=split(/\*/,$token);
826: $lonhost=~tr/A-Z/a-z/;
827: my $dtoken=$ta.'_'.$hostip{$lonhost}.'_'.$tb;
828: $dtoken=~s/\W/\_/g;
829: my ($tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
830: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
831:
1.154 www 832: unless (($tuname) && ($tudom)) {
833: &logthis('Check in '.$token.' ('.$dtoken.') failed');
834: return '';
835: }
836:
837: unless (&allowed('mgr',$tcrsid)) {
838: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
839: $ENV{'user.name'}.' - '.$ENV{'user.domain'});
840: return '';
841: }
842:
1.153 www 843: my %infohash=('resource.0.intoken' => $token,
844: 'resource.0.checkintime' => $now,
845: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
1.150 www 846:
847: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
848: return '';
849: }
850:
851: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
852: &escape('Checkin - '.$token)) ne 'ok') {
853: return '';
854: }
855:
856: return ($symb,$tuname,$tudom,$tcrsid);
1.110 www 857: }
858:
859: # --------------------------------------------- Set Expire Date for Spreadsheet
860:
861: sub expirespread {
862: my ($uname,$udom,$stype,$usymb)=@_;
863: my $cid=$ENV{'request.course.id'};
864: if ($cid) {
865: my $now=time;
866: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
867: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
868: $ENV{'course.'.$cid.'.num'}.
869: ':nohist_expirationdates:'.
870: &escape($key).'='.$now,
871: $ENV{'course.'.$cid.'.home'})
872: }
873: return 'ok';
1.14 www 874: }
875:
1.109 www 876: # ----------------------------------------------------- Devalidate Spreadsheets
877:
878: sub devalidate {
879: my $symb=shift;
880: my $cid=$ENV{'request.course.id'};
881: if ($cid) {
882: my $key=$ENV{'user.name'}.':'.$ENV{'user.domain'}.':';
883: my $status=
1.133 albertel 884: &del('nohist_calculatedsheet',
885: [$key.'studentcalc'],
886: $ENV{'course.'.$cid.'.domain'},
887: $ENV{'course.'.$cid.'.num'})
888: .' '.
889: &del('nohist_calculatedsheets_'.$cid,
890: [$key.'assesscalc:'.$symb]);
1.109 www 891: unless ($status eq 'ok ok') {
892: &logthis('Could not devalidate spreadsheet '.
893: $ENV{'user.name'}.' at '.$ENV{'user.domain'}.' for '.
894: $symb.': '.$status);
1.133 albertel 895: }
1.109 www 896: }
897: }
898:
1.168 albertel 899: sub hash2str {
900: my (%hash)=@_;
901: my $result='';
902: map { $result.=escape($_).'='.escape($hash{$_}).'&'; } keys %hash;
903: $result=~s/\&$//;
904: return $result;
905: }
906:
907: sub str2hash {
908: my ($string) = @_;
909: my %returnhash;
910: map {
911: my ($name,$value)=split(/\=/,$_);
912: $returnhash{&unescape($name)}=&unescape($value);
913: } split(/\&/,$string);
914: return %returnhash;
915: }
916:
1.167 albertel 917: # -------------------------------------------------------------------Temp Store
918:
1.168 albertel 919: sub tmpreset {
920: my ($symb,$namespace,$domain,$stuname) = @_;
921: if (!$symb) {
922: $symb=&symbread();
923: if (!$symb) { $symb= $ENV{'REQUEST_URI'}; }
924: }
925: $symb=escape($symb);
926:
927: if (!$namespace) { $namespace=$ENV{'request.state'}; }
928: $namespace=~s/\//\_/g;
929: $namespace=~s/\W//g;
930:
931: #FIXME needs to do something for /pub resources
932: if (!$domain) { $domain=$ENV{'user.domain'}; }
933: if (!$stuname) { $stuname=$ENV{'user.name'}; }
934: my $path=$perlvar{'lonDaemons'}.'/tmp';
935: my %hash;
936: if (tie(%hash,'GDBM_File',
937: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
938: &GDBM_WRCREAT,0640)) {
939: foreach my $key (keys %hash) {
940: if ($key=~ /:$symb:/) {
941: delete($hash{$key});
942: }
943: }
944: }
945: }
946:
1.167 albertel 947: sub tmpstore {
1.168 albertel 948: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
949:
950: if (!$symb) {
951: $symb=&symbread();
952: if (!$symb) { $symb= $ENV{'request.url'}; }
953: }
954: $symb=escape($symb);
955:
956: if (!$namespace) {
957: # I don't think we would ever want to store this for a course.
958: # it seems this will only be used if we don't have a course.
959: #$namespace=$ENV{'request.course.id'};
960: #if (!$namespace) {
961: $namespace=$ENV{'request.state'};
962: #}
963: }
964: $namespace=~s/\//\_/g;
965: $namespace=~s/\W//g;
966: #FIXME needs to do something for /pub resources
967: if (!$domain) { $domain=$ENV{'user.domain'}; }
968: if (!$stuname) { $stuname=$ENV{'user.name'}; }
969: my $now=time;
970: my %hash;
971: my $path=$perlvar{'lonDaemons'}.'/tmp';
972: if (tie(%hash,'GDBM_File',
973: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
974: &GDBM_WRCREAT,0640)) {
975: $hash{"version:$symb"}++;
976: my $version=$hash{"version:$symb"};
977: my $allkeys='';
978: foreach my $key (keys(%$storehash)) {
979: $allkeys.=$key.':';
980: $hash{"$version:$symb:$key"}=$$storehash{$key};
981: }
982: $hash{"$version:$symb:timestamp"}=$now;
983: $allkeys.='timestamp';
984: $hash{"$version:keys:$symb"}=$allkeys;
985: if (untie(%hash)) {
986: return 'ok';
987: } else {
988: return "error:$!";
989: }
990: } else {
991: return "error:$!";
992: }
993: }
1.167 albertel 994:
1.168 albertel 995: # -----------------------------------------------------------------Temp Restore
1.167 albertel 996:
1.168 albertel 997: sub tmprestore {
998: my ($symb,$namespace,$domain,$stuname) = @_;
1.167 albertel 999:
1.168 albertel 1000: if (!$symb) {
1001: $symb=&symbread();
1002: if (!$symb) { $symb= $ENV{'request.url'}; }
1003: }
1004: $symb=escape($symb);
1005:
1006: if (!$namespace) { $namespace=$ENV{'request.state'}; }
1007: #FIXME needs to do something for /pub resources
1008: if (!$domain) { $domain=$ENV{'user.domain'}; }
1009: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1010:
1011: my %returnhash;
1012: $namespace=~s/\//\_/g;
1013: $namespace=~s/\W//g;
1014: my %hash;
1015: my $path=$perlvar{'lonDaemons'}.'/tmp';
1016: if (tie(%hash,'GDBM_File',
1017: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1018: &GDBM_READER,0640)) {
1019: my $version=$hash{"version:$symb"};
1020: $returnhash{'version'}=$version;
1021: my $scope;
1022: for ($scope=1;$scope<=$version;$scope++) {
1023: my $vkeys=$hash{"$scope:keys:$symb"};
1024: my @keys=split(/:/,$vkeys);
1025: my $key;
1026: $returnhash{"$scope:keys"}=$vkeys;
1027: foreach $key (@keys) {
1028: $returnhash{"$scope:$key"}=$hash{"$scope:$symb:$key"};
1029: $returnhash{"$key"}=$hash{"$scope:$symb:$key"};
1.167 albertel 1030: }
1031: }
1.168 albertel 1032: if (!(untie(%hash))) {
1033: return "error:$!";
1034: }
1035: } else {
1036: return "error:$!";
1037: }
1038: return %returnhash;
1.167 albertel 1039: }
1040:
1.9 www 1041: # ----------------------------------------------------------------------- Store
1042:
1043: sub store {
1.124 www 1044: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
1045: my $home='';
1046:
1.168 albertel 1047: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 1048:
1.122 albertel 1049: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 1050:
1051: &devalidate($symb);
1052:
1053: $symb=escape($symb);
1.122 albertel 1054: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
1055: if (!$domain) { $domain=$ENV{'user.domain'}; }
1056: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1057: if (!$home) { $home=$ENV{'user.home'}; }
1.12 www 1058: my $namevalue='';
1059: map {
1.122 albertel 1060: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1061: } keys %$storehash;
1.12 www 1062: $namevalue=~s/\&$//;
1.124 www 1063: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.9 www 1064: }
1065:
1.47 www 1066: # -------------------------------------------------------------- Critical Store
1067:
1068: sub cstore {
1.124 www 1069: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
1070: my $home='';
1071:
1.168 albertel 1072: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 1073:
1.122 albertel 1074: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 1075:
1076: &devalidate($symb);
1077:
1078: $symb=escape($symb);
1.122 albertel 1079: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
1080: if (!$domain) { $domain=$ENV{'user.domain'}; }
1081: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1082: if (!$home) { $home=$ENV{'user.home'}; }
1083:
1.47 www 1084: my $namevalue='';
1085: map {
1.122 albertel 1086: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1087: } keys %$storehash;
1.47 www 1088: $namevalue=~s/\&$//;
1.122 albertel 1089: return critical("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.47 www 1090: }
1091:
1.9 www 1092: # --------------------------------------------------------------------- Restore
1093:
1094: sub restore {
1.124 www 1095: my ($symb,$namespace,$domain,$stuname) = @_;
1096: my $home='';
1097:
1.168 albertel 1098: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 1099:
1.122 albertel 1100: if (!$symb) {
1101: unless ($symb=escape(&symbread())) { return ''; }
1102: } else {
1103: $symb=&escape($symb);
1104: }
1105: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
1106: if (!$domain) { $domain=$ENV{'user.domain'}; }
1107: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1108: if (!$home) { $home=$ENV{'user.home'}; }
1109: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
1110:
1.12 www 1111: my %returnhash=();
1112: map {
1113: my ($name,$value)=split(/\=/,$_);
1114: $returnhash{&unescape($name)}=&unescape($value);
1115: } split(/\&/,$answer);
1.75 www 1116: my $version;
1117: for ($version=1;$version<=$returnhash{'version'};$version++) {
1118: map {
1119: $returnhash{$_}=$returnhash{$version.':'.$_};
1120: } split(/\:/,$returnhash{$version.':keys'});
1121: }
1.13 www 1122: return %returnhash;
1.34 www 1123: }
1124:
1125: # ---------------------------------------------------------- Course Description
1126:
1127: sub coursedescription {
1128: my $courseid=shift;
1129: $courseid=~s/^\///;
1.49 www 1130: $courseid=~s/\_/\//g;
1.34 www 1131: my ($cdomain,$cnum)=split(/\//,$courseid);
1.129 albertel 1132: my $chome=&homeserver($cnum,$cdomain);
1.34 www 1133: if ($chome ne 'no_host') {
1.129 albertel 1134: my %returnhash=&dump('environment',$cdomain,$cnum);
1135: if (!exists($returnhash{'con_lost'})) {
1.96 www 1136: my $normalid=$cdomain.'_'.$cnum;
1.53 www 1137: my %envhash=();
1.129 albertel 1138: $returnhash{'home'}= $chome;
1139: $returnhash{'domain'} = $cdomain;
1140: $returnhash{'num'} = $cnum;
1.130 albertel 1141: while (my ($name,$value) = each %returnhash) {
1.53 www 1142: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.129 albertel 1143: }
1.34 www 1144: $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
1145: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 1146: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.54 www 1147: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.60 www 1148: $envhash{'course.'.$normalid.'.home'}=$chome;
1149: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
1150: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.53 www 1151: &appenv(%envhash);
1.34 www 1152: return %returnhash;
1153: }
1154: }
1155: return ();
1.9 www 1156: }
1.1 albertel 1157:
1.103 harris41 1158: # -------------------------------------------------------- Get user privileges
1.11 www 1159:
1160: sub rolesinit {
1161: my ($domain,$username,$authhost)=@_;
1162: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 1163: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 1164: my %allroles=();
1165: my %thesepriv=();
1166: my $now=time;
1.21 www 1167: my $userroles="user.login.time=$now\n";
1.11 www 1168: my $thesestr;
1169:
1170: if ($rolesdump ne '') {
1171: map {
1.21 www 1172: if ($_!~/^rolesdef\&/) {
1.11 www 1173: my ($area,$role)=split(/=/,$_);
1.21 www 1174: $area=~s/\_\w\w$//;
1.11 www 1175: my ($trole,$tend,$tstart)=split(/_/,$role);
1.21 www 1176: $userroles.='user.role.'.$trole.'.'.$area.'='.
1177: $tstart.'.'.$tend."\n";
1.11 www 1178: if ($tend!=0) {
1179: if ($tend<$now) {
1180: $trole='';
1181: }
1182: }
1183: if ($tstart!=0) {
1184: if ($tstart>$now) {
1185: $trole='';
1186: }
1187: }
1188: if (($area ne '') && ($trole ne '')) {
1.50 www 1189: my $spec=$trole.'.'.$area;
1.12 www 1190: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
1191: if ($trole =~ /^cr\//) {
1192: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
1193: my $homsvr=homeserver($rauthor,$rdomain);
1194: if ($hostname{$homsvr} ne '') {
1195: my $roledef=
1.21 www 1196: reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
1.12 www 1197: $homsvr);
1198: if (($roledef ne 'con_lost') && ($roledef ne '')) {
1199: my ($syspriv,$dompriv,$coursepriv)=
1.21 www 1200: split(/\_/,unescape($roledef));
1.50 www 1201: $allroles{'cm./'}.=':'.$syspriv;
1202: $allroles{$spec.'./'}.=':'.$syspriv;
1.12 www 1203: if ($tdomain ne '') {
1.50 www 1204: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
1205: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
1.12 www 1206: if ($trest ne '') {
1.50 www 1207: $allroles{'cm.'.$area}.=':'.$coursepriv;
1208: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
1.12 www 1209: }
1210: }
1211: }
1.11 www 1212: }
1.12 www 1213: } else {
1.50 www 1214: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
1215: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
1.12 www 1216: if ($tdomain ne '') {
1.50 www 1217: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1218: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1.12 www 1219: if ($trest ne '') {
1.50 www 1220: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
1221: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
1.12 www 1222: }
1223: }
1.11 www 1224: }
1.12 www 1225: }
1226: }
1.11 www 1227: } split(/&/,$rolesdump);
1.125 www 1228: my $adv=0;
1.128 www 1229: my $author=0;
1.11 www 1230: map {
1231: %thesepriv=();
1.146 www 1232: if (($_!~/^st/) && ($_!~/^ta/) && ($_!~/^cm/)) { $adv=1; }
1.128 www 1233: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
1.11 www 1234: map {
1235: if ($_ ne '') {
1.103 harris41 1236: my ($privilege,$restrictions)=split(/&/,$_);
1.11 www 1237: if ($restrictions eq '') {
1.103 harris41 1238: $thesepriv{$privilege}='F';
1.11 www 1239: } else {
1.103 harris41 1240: if ($thesepriv{$privilege} ne 'F') {
1241: $thesepriv{$privilege}.=$restrictions;
1.11 www 1242: }
1243: }
1244: }
1245: } split(/:/,$allroles{$_});
1246: $thesestr='';
1247: map { $thesestr.=':'.$_.'&'.$thesepriv{$_}; } keys %thesepriv;
1248: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
1249: } keys %allroles;
1.128 www 1250: $userroles.='user.adv='.$adv."\n".
1251: 'user.author='.$author."\n";
1.126 www 1252: $ENV{'user.adv'}=$adv;
1.11 www 1253: }
1254: return $userroles;
1255: }
1256:
1.12 www 1257: # --------------------------------------------------------------- get interface
1258:
1259: sub get {
1.131 albertel 1260: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 1261: my $items='';
1262: map {
1263: $items.=escape($_).'&';
1.131 albertel 1264: } @$storearr;
1.12 www 1265: $items=~s/\&$//;
1.131 albertel 1266: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1267: if (!$uname) { $uname=$ENV{'user.name'}; }
1268: my $uhome=&homeserver($uname,$udomain);
1269:
1.133 albertel 1270: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 1271: my @pairs=split(/\&/,$rep);
1272: my %returnhash=();
1.42 www 1273: my $i=0;
1.15 www 1274: map {
1.42 www 1275: $returnhash{$_}=unescape($pairs[$i]);
1276: $i++;
1.131 albertel 1277: } @$storearr;
1.15 www 1278: return %returnhash;
1.27 www 1279: }
1280:
1281: # --------------------------------------------------------------- del interface
1282:
1283: sub del {
1.133 albertel 1284: my ($namespace,$storearr,$udomain,$uname)=@_;
1.27 www 1285: my $items='';
1286: map {
1287: $items.=escape($_).'&';
1.133 albertel 1288: } @$storearr;
1.27 www 1289: $items=~s/\&$//;
1.133 albertel 1290: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1291: if (!$uname) { $uname=$ENV{'user.name'}; }
1292: my $uhome=&homeserver($uname,$udomain);
1293:
1294: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 1295: }
1296:
1297: # -------------------------------------------------------------- dump interface
1298:
1299: sub dump {
1.129 albertel 1300: my ($namespace,$udomain,$uname)=@_;
1301: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1302: if (!$uname) { $uname=$ENV{'user.name'}; }
1303: my $uhome=&homeserver($uname,$udomain);
1304: my $rep=reply("dump:$udomain:$uname:$namespace",$uhome);
1.12 www 1305: my @pairs=split(/\&/,$rep);
1306: my %returnhash=();
1307: map {
1308: my ($key,$value)=split(/=/,$_);
1.29 www 1309: $returnhash{unescape($key)}=unescape($value);
1.12 www 1310: } @pairs;
1311: return %returnhash;
1312: }
1313:
1314: # --------------------------------------------------------------- put interface
1315:
1316: sub put {
1.134 albertel 1317: my ($namespace,$storehash,$udomain,$uname)=@_;
1318: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1319: if (!$uname) { $uname=$ENV{'user.name'}; }
1320: my $uhome=&homeserver($uname,$udomain);
1.12 www 1321: my $items='';
1322: map {
1.134 albertel 1323: $items.=&escape($_).'='.&escape($$storehash{$_}).'&';
1324: } keys %$storehash;
1.12 www 1325: $items=~s/\&$//;
1.134 albertel 1326: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1.47 www 1327: }
1328:
1329: # ------------------------------------------------------ critical put interface
1330:
1331: sub cput {
1.134 albertel 1332: my ($namespace,$storehash,$udomain,$uname)=@_;
1333: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1334: if (!$uname) { $uname=$ENV{'user.name'}; }
1335: my $uhome=&homeserver($uname,$udomain);
1.47 www 1336: my $items='';
1337: map {
1.134 albertel 1338: $items.=escape($_).'='.escape($$storehash{$_}).'&';
1339: } keys %$storehash;
1.47 www 1340: $items=~s/\&$//;
1.134 albertel 1341: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 1342: }
1343:
1344: # -------------------------------------------------------------- eget interface
1345:
1346: sub eget {
1.133 albertel 1347: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 1348: my $items='';
1349: map {
1350: $items.=escape($_).'&';
1.133 albertel 1351: } @$storearr;
1.12 www 1352: $items=~s/\&$//;
1.133 albertel 1353: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1354: if (!$uname) { $uname=$ENV{'user.name'}; }
1355: my $uhome=&homeserver($uname,$udomain);
1356: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 1357: my @pairs=split(/\&/,$rep);
1358: my %returnhash=();
1.42 www 1359: my $i=0;
1.12 www 1360: map {
1.42 www 1361: $returnhash{$_}=unescape($pairs[$i]);
1362: $i++;
1.133 albertel 1363: } @$storearr;
1.12 www 1364: return %returnhash;
1365: }
1366:
1.103 harris41 1367: # ------------------------------------------------- Check for a user privilege
1.12 www 1368:
1369: sub allowed {
1370: my ($priv,$uri)=@_;
1.152 www 1371:
1372: my $orguri=$uri;
1.52 www 1373: $uri=&declutter($uri);
1.29 www 1374:
1.54 www 1375: # Free bre access to adm and meta resources
1.29 www 1376:
1.54 www 1377: if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 1378: return 'F';
1.159 www 1379: }
1380:
1381: # Free bre to public access
1382:
1383: if ($priv eq 'bre') {
1384: if (&metadata($uri,'copyright') eq 'public') { return 'F'; }
1.14 www 1385: }
1.29 www 1386:
1.52 www 1387: my $thisallowed='';
1388: my $statecond=0;
1389: my $courseprivid='';
1390:
1391: # Course
1392:
1393: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/$priv\&([^\:]*)/) {
1394: $thisallowed.=$1;
1395: }
1.29 www 1396:
1.52 www 1397: # Domain
1398:
1399: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1400: =~/$priv\&([^\:]*)/) {
1.12 www 1401: $thisallowed.=$1;
1402: }
1.52 www 1403:
1404: # Course: uri itself is a course
1.66 www 1405: my $courseuri=$uri;
1406: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 1407: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 1408:
1.83 www 1409: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.52 www 1410: =~/$priv\&([^\:]*)/) {
1.12 www 1411: $thisallowed.=$1;
1412: }
1.29 www 1413:
1.52 www 1414: # Full access at system, domain or course-wide level? Exit.
1.29 www 1415:
1416: if ($thisallowed=~/F/) {
1417: return 'F';
1418: }
1419:
1.52 www 1420: # If this is generating or modifying users, exit with special codes
1.29 www 1421:
1.166 www 1422: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:$priv\:/) {
1.52 www 1423: return $thisallowed;
1424: }
1425: #
1.103 harris41 1426: # Gathered so far: system, domain and course wide privileges
1.52 www 1427: #
1428: # Course: See if uri or referer is an individual resource that is part of
1429: # the course
1430:
1431: if ($ENV{'request.course.id'}) {
1432: $courseprivid=$ENV{'request.course.id'};
1433: if ($ENV{'request.course.sec'}) {
1434: $courseprivid.='/'.$ENV{'request.course.sec'};
1435: }
1436: $courseprivid=~s/\_/\//;
1437: my $checkreferer=1;
1438: my @uriparts=split(/\//,$uri);
1439: my $filename=$uriparts[$#uriparts];
1440: my $pathname=$uri;
1441: $pathname=~s/\/$filename$//;
1442: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.54 www 1443: /\&$filename\:([\d\|]+)\&/) {
1.52 www 1444: $statecond=$1;
1445: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1446: =~/$priv\&([^\:]*)/) {
1447: $thisallowed.=$1;
1448: $checkreferer=0;
1449: }
1.29 www 1450: }
1.83 www 1451:
1.148 www 1452: if ($checkreferer) {
1.152 www 1453: my $refuri=$ENV{'httpref.'.$orguri};
1.148 www 1454:
1455: unless ($refuri) {
1456: map {
1457: if ($_=~/^httpref\..*\*/) {
1458: my $pattern=$_;
1.156 www 1459: $pattern=~s/^httpref\.\/res\///;
1.148 www 1460: $pattern=~s/\*/\[\^\/\]\+/g;
1461: $pattern=~s/\//\\\//g;
1.152 www 1462: if ($orguri=~/$pattern/) {
1.148 www 1463: $refuri=$ENV{$_};
1464: }
1465: }
1466: } keys %ENV;
1467: }
1468: if ($refuri) {
1.152 www 1469: $refuri=&declutter($refuri);
1.53 www 1470: my @uriparts=split(/\//,$refuri);
1.52 www 1471: my $filename=$uriparts[$#uriparts];
1.53 www 1472: my $pathname=$refuri;
1.52 www 1473: $pathname=~s/\/$filename$//;
1.53 www 1474: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.54 www 1475: /\&$filename\:([\d\|]+)\&/) {
1.53 www 1476: my $refstatecond=$1;
1.52 www 1477: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1478: =~/$priv\&([^\:]*)/) {
1479: $thisallowed.=$1;
1.53 www 1480: $uri=$refuri;
1481: $statecond=$refstatecond;
1.52 www 1482: }
1483: }
1.148 www 1484: }
1.29 www 1485: }
1.52 www 1486: }
1.29 www 1487:
1.52 www 1488: #
1.103 harris41 1489: # Gathered now: all privileges that could apply, and condition number
1.52 www 1490: #
1491: #
1492: # Full or no access?
1493: #
1.29 www 1494:
1.52 www 1495: if ($thisallowed=~/F/) {
1496: return 'F';
1497: }
1.29 www 1498:
1.52 www 1499: unless ($thisallowed) {
1500: return '';
1501: }
1.29 www 1502:
1.52 www 1503: # Restrictions exist, deal with them
1504: #
1505: # C:according to course preferences
1506: # R:according to resource settings
1507: # L:unless locked
1508: # X:according to user session state
1509: #
1510:
1511: # Possibly locked functionality, check all courses
1.54 www 1512: # Locks might take effect only after 10 minutes cache expiration for other
1513: # courses, and 2 minutes for current course
1.52 www 1514:
1515: my $envkey;
1516: if ($thisallowed=~/L/) {
1517: foreach $envkey (keys %ENV) {
1.54 www 1518: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
1519: my $courseid=$2;
1520: my $roleid=$1.'.'.$2;
1.92 www 1521: $courseid=~s/^\///;
1.54 www 1522: my $expiretime=600;
1523: if ($ENV{'request.role'} eq $roleid) {
1524: $expiretime=120;
1525: }
1526: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
1527: my $prefix='course.'.$cdom.'_'.$cnum.'.';
1528: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
1529: &coursedescription($courseid);
1530: }
1531: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,$csec\,/)
1532: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
1533: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 1534: &log($ENV{'user.domain'},$ENV{'user.name'},
1535: $ENV{'user.host'},
1536: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 1537: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1538: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1539: return '';
1540: }
1541: }
1.54 www 1542: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/)
1543: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
1544: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 1545: &log($ENV{'user.domain'},$ENV{'user.name'},
1546: $ENV{'user.host'},
1547: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 1548: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1549: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1550: return '';
1551: }
1552: }
1553: }
1.29 www 1554: }
1.52 www 1555: }
1556:
1557: #
1558: # Rest of the restrictions depend on selected course
1559: #
1560:
1561: unless ($ENV{'request.course.id'}) {
1562: return '1';
1563: }
1.29 www 1564:
1.52 www 1565: #
1566: # Now user is definitely in a course
1567: #
1.53 www 1568:
1569:
1570: # Course preferences
1571:
1572: if ($thisallowed=~/C/) {
1.54 www 1573: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1574: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1575: =~/\,$rolecode\,/) {
1.57 www 1576: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1577: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.54 www 1578: $ENV{'request.course.id'});
1579: return '';
1580: }
1.53 www 1581: }
1582:
1583: # Resource preferences
1584:
1585: if ($thisallowed=~/R/) {
1.54 www 1586: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1587: my $filename=$perlvar{'lonDocRoot'}.'/res/'.$uri.'.meta';
1588: if (-e $filename) {
1589: my @content;
1590: {
1591: my $fh=Apache::File->new($filename);
1592: @content=<$fh>;
1593: }
1594: if (join('',@content)=~
1595: /\<roledeny[^\>]*\>[^\<]*$rolecode[^\<]*\<\/roledeny\>/) {
1.57 www 1596: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1597: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.54 www 1598: return '';
1599:
1600: }
1601: }
1.53 www 1602: }
1.30 www 1603:
1.52 www 1604: # Restricted by state?
1.30 www 1605:
1.52 www 1606: if ($thisallowed=~/X/) {
1607: if (&condval($statecond)) {
1608: return '2';
1609: } else {
1610: return '';
1611: }
1612: }
1.30 www 1613:
1.52 www 1614: return 'F';
1.12 www 1615: }
1616:
1617: # ----------------------------------------------------------------- Define Role
1618:
1619: sub definerole {
1620: if (allowed('mcr','/')) {
1621: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.21 www 1622: map {
1623: my ($crole,$cqual)=split(/\&/,$_);
1624: if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
1625: if ($pr{'cr:s'}=~/$crole\&/) {
1626: if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
1627: return "refused:s:$crole&$cqual";
1628: }
1629: }
1630: } split('/',$sysrole);
1631: map {
1632: my ($crole,$cqual)=split(/\&/,$_);
1633: if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
1634: if ($pr{'cr:d'}=~/$crole\&/) {
1635: if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
1636: return "refused:d:$crole&$cqual";
1637: }
1638: }
1639: } split('/',$domrole);
1640: map {
1641: my ($crole,$cqual)=split(/\&/,$_);
1642: if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
1643: if ($pr{'cr:c'}=~/$crole\&/) {
1644: if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
1645: return "refused:c:$crole&$cqual";
1646: }
1647: }
1648: } split('/',$courole);
1.12 www 1649: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1650: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 1651: "rolesdef_$rolename=".
1652: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 1653: return reply($command,$ENV{'user.home'});
1654: } else {
1655: return 'refused';
1656: }
1.105 harris41 1657: }
1658:
1659: # ---------------- Make a metadata query against the network of library servers
1660:
1661: sub metadata_query {
1.116 harris41 1662: my ($query,$custom,$customshow)=@_;
1.118 harris41 1663: # need to put in a library server loop here and return a hash
1.120 harris41 1664: my %rhash;
1.123 harris41 1665: for my $server (keys %libserv) {
1.118 harris41 1666: unless ($custom or $customshow) {
1667: my $reply=&reply("querysend:".&escape($query),$server);
1668: $rhash{$server}=$reply;
1669: }
1670: else {
1671: my $reply=&reply("querysend:".&escape($query).':'.
1672: &escape($custom).':'.&escape($customshow),
1673: $server);
1674: $rhash{$server}=$reply;
1675: }
1.112 harris41 1676: }
1.118 harris41 1677: return \%rhash;
1.12 www 1678: }
1679:
1680: # ------------------------------------------------------------------ Plain Text
1681:
1682: sub plaintext {
1.22 www 1683: my $short=shift;
1684: return $prp{$short};
1.12 www 1685: }
1686:
1.25 www 1687: # ------------------------------------------------------------------ Plain Text
1688:
1689: sub fileembstyle {
1690: my $ending=shift;
1691: return $fe{$ending};
1692: }
1693:
1694: # ------------------------------------------------------------ Description Text
1695:
1.74 www 1696: sub filedescription {
1.25 www 1697: my $ending=shift;
1698: return $fd{$ending};
1699: }
1700:
1.12 www 1701: # ----------------------------------------------------------------- Assign Role
1702:
1703: sub assignrole {
1.21 www 1704: my ($udom,$uname,$url,$role,$end,$start)=@_;
1705: my $mrole;
1706: if ($role =~ /^cr\//) {
1.104 www 1707: unless (&allowed('ccr',$url)) {
1708: &logthis('Refused custom assignrole: '.
1709: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1710: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1711: return 'refused';
1712: }
1.21 www 1713: $mrole='cr';
1714: } else {
1.82 www 1715: my $cwosec=$url;
1.83 www 1716: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.104 www 1717: unless (&allowed('c'.$role,$cwosec)) {
1718: &logthis('Refused assignrole: '.
1719: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1720: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1721: return 'refused';
1722: }
1.21 www 1723: $mrole=$role;
1724: }
1725: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1726: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 1727: if ($end) { $command.='_'.$end; }
1.21 www 1728: if ($start) {
1729: if ($end) {
1.81 www 1730: $command.='_'.$start;
1.21 www 1731: } else {
1.81 www 1732: $command.='_0_'.$start;
1.21 www 1733: }
1734: }
1735: return &reply($command,&homeserver($uname,$udom));
1.169 ! harris41 1736: }
! 1737:
! 1738: # -------------------------------------------------- Modify user authentication
! 1739: sub modifyuserauth {
! 1740: my ($udom,$uname,$umode,$upass)=@_;
! 1741: my $uhome=&homeserver($uname,$udom);
! 1742: &logthis('Call to modify user authentication'.$udom.', '.$uname.', '.
! 1743: $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'});
! 1744: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
! 1745: &escape($upass),$uhome);
! 1746: unless ($reply eq 'ok') {
! 1747: return 'error: '.$reply;
! 1748: }
1.80 www 1749: }
1750:
1.81 www 1751: # --------------------------------------------------------------- Modify a user
1.80 www 1752:
1753:
1.81 www 1754: sub modifyuser {
1.80 www 1755: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene)=@_;
1.81 www 1756: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1757: $umode.', '.$first.', '.$middle.', '.
1758: $last.', '.$gene.' by '.
1759: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1760: my $uhome=&homeserver($uname,$udom);
1761: # ----------------------------------------------------------------- Create User
1.81 www 1762: if (($uhome eq 'no_host') && ($umode) && ($upass)) {
1.80 www 1763: my $unhome='';
1764: if ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1765: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1766: } else {
1767: my $tryserver;
1.81 www 1768: my $loadm=10000000;
1.80 www 1769: foreach $tryserver (keys %libserv) {
1770: if ($hostdom{$tryserver} eq $udom) {
1771: my $answer=reply('load',$tryserver);
1772: if (($answer=~/\d+/) && ($answer<$loadm)) {
1773: $loadm=$answer;
1774: $unhome=$tryserver;
1775: }
1776: }
1777: }
1778: }
1779: if (($unhome eq '') || ($unhome eq 'no_host')) {
1780: return 'error: find home';
1781: }
1782: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
1783: &escape($upass),$unhome);
1784: unless ($reply eq 'ok') {
1785: return 'error: '.$reply;
1786: }
1787: $uhome=&homeserver($uname,$udom);
1788: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1789: return 'error: verify home';
1790: }
1791: }
1792: # ---------------------------------------------------------------------- Add ID
1793: if ($uid) {
1794: $uid=~tr/A-Z/a-z/;
1795: my %uidhash=&idrget($udom,$uname);
1796: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)) {
1797: unless ($uid eq $uidhash{$uname}) {
1798: return 'error: mismatch '.$uidhash{$uname}.' versus '.$uid;
1799: }
1800: } else {
1801: &idput($udom,($uname => $uid));
1802: }
1803: }
1804: # -------------------------------------------------------------- Add names, etc
1.134 albertel 1805: my %names=&get('environment',
1806: ['firstname','middlename','lastname','generation'],
1807: $udom,$uname);
1808: if ($first) { $names{'firstname'} = $first; }
1809: if ($middle) { $names{'middlename'} = $middle; }
1810: if ($last) { $names{'lastname'} = $last; }
1811: if ($gene) { $names{'generation'} = $gene; }
1812: my $reply = &put('environment', \%names, $udom,$uname);
1813: if ($reply ne 'ok') { return 'error: '.$reply; }
1.81 www 1814: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1815: $umode.', '.$first.', '.$middle.', '.
1816: $last.', '.$gene.' by '.
1817: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.134 albertel 1818: return 'ok';
1.80 www 1819: }
1820:
1.81 www 1821: # -------------------------------------------------------------- Modify student
1.80 www 1822:
1.81 www 1823: sub modifystudent {
1824: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1825: $end,$start)=@_;
1826: my $cid='';
1827: unless ($cid=$ENV{'request.course.id'}) {
1.80 www 1828: return 'not_in_class';
1829: }
1830: # --------------------------------------------------------------- Make the user
1.81 www 1831: my $reply=&modifyuser
1.80 www 1832: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene);
1833: unless ($reply eq 'ok') { return $reply; }
1.81 www 1834: my $uhome=&homeserver($uname,$udom);
1835: if (($uhome eq '') || ($uhome eq 'no_host')) {
1836: return 'error: no such user';
1837: }
1.80 www 1838: # -------------------------------------------------- Add student to course list
1.160 www 1839: $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1.81 www 1840: $ENV{'course.'.$cid.'.num'}.':classlist:'.
1841: &escape($uname.':'.$udom).'='.
1842: &escape($end.':'.$start),
1843: $ENV{'course.'.$cid.'.home'});
1844: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
1845: return 'error: '.$reply;
1846: }
1.80 www 1847: # ---------------------------------------------------- Add student role to user
1.83 www 1848: my $uurl='/'.$cid;
1.81 www 1849: $uurl=~s/\_/\//g;
1850: if ($usec) {
1851: $uurl.='/'.$usec;
1852: }
1853: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 1854: }
1855:
1.84 www 1856: # ------------------------------------------------- Write to course preferences
1857:
1858: sub writecoursepref {
1859: my ($courseid,%prefs)=@_;
1860: $courseid=~s/^\///;
1861: $courseid=~s/\_/\//g;
1862: my ($cdomain,$cnum)=split(/\//,$courseid);
1863: my $chome=homeserver($cnum,$cdomain);
1864: if (($chome eq '') || ($chome eq 'no_host')) {
1865: return 'error: no such course';
1866: }
1867: my $cstring='';
1868: map {
1869: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1870: } keys %prefs;
1871: $cstring=~s/\&$//;
1872: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
1873: }
1874:
1875: # ---------------------------------------------------------- Make/modify course
1876:
1877: sub createcourse {
1878: my ($udom,$description,$url)=@_;
1879: $url=&declutter($url);
1880: my $cid='';
1881: unless (&allowed('ccc',$ENV{'user.domain'})) {
1882: return 'refused';
1883: }
1884: unless ($udom eq $ENV{'user.domain'}) {
1885: return 'refused';
1886: }
1887: # ------------------------------------------------------------------- Create ID
1888: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1889: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1890: # ----------------------------------------------- Make sure that does not exist
1891: my $uhome=&homeserver($uname,$udom);
1892: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1893: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1894: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1895: $uhome=&homeserver($uname,$udom);
1896: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1897: return 'error: unable to generate unique course-ID';
1898: }
1899: }
1900: # ------------------------------------------------------------- Make the course
1901: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1902: $ENV{'user.home'});
1903: unless ($reply eq 'ok') { return 'error: '.$reply; }
1.160 www 1904: $uhome=&homeserver($uname,$udom);
1.84 www 1905: if (($uhome eq '') || ($uhome eq 'no_host')) {
1906: return 'error: no such course';
1907: }
1908: &writecoursepref($udom.'_'.$uname,
1909: ('description' => $description,
1910: 'url' => $url));
1911: return '/'.$udom.'/'.$uname;
1912: }
1913:
1.21 www 1914: # ---------------------------------------------------------- Assign Custom Role
1915:
1916: sub assigncustomrole {
1917: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
1918: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1919: $end,$start);
1920: }
1921:
1922: # ----------------------------------------------------------------- Revoke Role
1923:
1924: sub revokerole {
1925: my ($udom,$uname,$url,$role)=@_;
1926: my $now=time;
1927: return &assignrole($udom,$uname,$url,$role,$now);
1928: }
1929:
1930: # ---------------------------------------------------------- Revoke Custom Role
1931:
1932: sub revokecustomrole {
1933: my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
1934: my $now=time;
1935: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
1.17 www 1936: }
1937:
1938: # ------------------------------------------------------------ Directory lister
1939:
1940: sub dirlist {
1941: my $uri=shift;
1.18 www 1942: $uri=~s/^\///;
1943: $uri=~s/\/$//;
1.19 www 1944: my ($res,$udom,$uname,@rest)=split(/\//,$uri);
1945: if ($udom) {
1946: if ($uname) {
1947: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
1948: homeserver($uname,$udom));
1949: return split(/:/,$listing);
1950: } else {
1951: my $tryserver;
1952: my %allusers=();
1953: foreach $tryserver (keys %libserv) {
1954: if ($hostdom{$tryserver} eq $udom) {
1955: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
1956: $tryserver);
1957: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
1958: && ($listing ne 'con_lost')) {
1959: map {
1960: my ($entry,@stat)=split(/&/,$_);
1961: $allusers{$entry}=1;
1962: } split(/:/,$listing);
1963: }
1964: }
1965: }
1966: my $alluserstr='';
1967: map {
1968: $alluserstr.=$_.'&user:';
1969: } sort keys %allusers;
1970: $alluserstr=~s/:$//;
1971: return split(/:/,$alluserstr);
1972: }
1973: } else {
1974: my $tryserver;
1975: my %alldom=();
1976: foreach $tryserver (keys %libserv) {
1977: $alldom{$hostdom{$tryserver}}=1;
1978: }
1979: my $alldomstr='';
1980: map {
1981: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
1982: } sort keys %alldom;
1983: $alldomstr=~s/:$//;
1984: return split(/:/,$alldomstr);
1985: }
1.26 www 1986: }
1987:
1988: # -------------------------------------------------------- Value of a Condition
1989:
1.40 www 1990: sub directcondval {
1991: my $number=shift;
1992: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
1993: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
1994: } else {
1995: return 2;
1996: }
1997: }
1998:
1.26 www 1999: sub condval {
2000: my $condidx=shift;
2001: my $result=0;
1.54 www 2002: my $allpathcond='';
2003: map {
2004: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
2005: $allpathcond.=
2006: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
2007: }
2008: } split(/\|/,$condidx);
2009: $allpathcond=~s/\|$//;
1.33 www 2010: if ($ENV{'request.course.id'}) {
1.54 www 2011: if ($allpathcond) {
1.26 www 2012: my $operand='|';
2013: my @stack;
2014: map {
2015: if ($_ eq '(') {
2016: push @stack,($operand,$result)
2017: } elsif ($_ eq ')') {
2018: my $before=pop @stack;
2019: if (pop @stack eq '&') {
2020: $result=$result>$before?$before:$result;
2021: } else {
2022: $result=$result>$before?$result:$before;
2023: }
2024: } elsif (($_ eq '&') || ($_ eq '|')) {
2025: $operand=$_;
2026: } else {
1.40 www 2027: my $new=directcondval($_);
1.26 www 2028: if ($operand eq '&') {
2029: $result=$result>$new?$new:$result;
2030: } else {
2031: $result=$result>$new?$result:$new;
2032: }
2033: }
1.54 www 2034: } ($allpathcond=~/(\d+|\(|\)|\&|\|)/g);
1.26 www 2035: }
2036: }
2037: return $result;
1.28 www 2038: }
2039:
2040: # --------------------------------------------------------- Value of a Variable
2041:
1.58 www 2042: sub EXT {
1.147 www 2043: my ($varname,$symbparm)=@_;
1.68 www 2044: unless ($varname) { return ''; }
1.48 www 2045: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
2046: my $rest;
2047: if ($therest[0]) {
2048: $rest=join('.',@therest);
2049: } else {
2050: $rest='';
2051: }
1.57 www 2052: my $qualifierrest=$qualifier;
2053: if ($rest) { $qualifierrest.='.'.$rest; }
2054: my $spacequalifierrest=$space;
2055: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 2056: if ($realm eq 'user') {
1.48 www 2057: # --------------------------------------------------------------- user.resource
2058: if ($space eq 'resource') {
1.122 albertel 2059: my %restored=&restore();
1.57 www 2060: return $restored{$qualifierrest};
1.48 www 2061: # ----------------------------------------------------------------- user.access
2062: } elsif ($space eq 'access') {
2063: return &allowed($qualifier,$rest);
2064: # ------------------------------------------ user.preferences, user.environment
2065: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.57 www 2066: return $ENV{join('.',('environment',$qualifierrest))};
1.48 www 2067: # ----------------------------------------------------------------- user.course
2068: } elsif ($space eq 'course') {
2069: return $ENV{join('.',('request.course',$qualifier))};
2070: # ------------------------------------------------------------------- user.role
2071: } elsif ($space eq 'role') {
2072: my ($role,$where)=split(/\./,$ENV{'request.role'});
2073: if ($qualifier eq 'value') {
2074: return $role;
2075: } elsif ($qualifier eq 'extent') {
2076: return $where;
2077: }
2078: # ----------------------------------------------------------------- user.domain
2079: } elsif ($space eq 'domain') {
2080: return $ENV{'user.domain'};
2081: # ------------------------------------------------------------------- user.name
2082: } elsif ($space eq 'name') {
2083: return $ENV{'user.name'};
2084: # ---------------------------------------------------- Any other user namespace
1.29 www 2085: } else {
1.48 www 2086: my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
1.131 albertel 2087: my %reply=&get($space,[$item]);
1.48 www 2088: return $reply{$item};
2089: }
2090: } elsif ($realm eq 'request') {
2091: # ------------------------------------------------------------- request.browser
2092: if ($space eq 'browser') {
2093: return $ENV{'browser.'.$qualifier};
1.57 www 2094: # ------------------------------------------------------------ request.filename
2095: } else {
2096: return $ENV{'request.'.$spacequalifierrest};
1.29 www 2097: }
1.28 www 2098: } elsif ($realm eq 'course') {
1.48 www 2099: # ---------------------------------------------------------- course.description
1.127 ng 2100: return $ENV{'course.'.$ENV{'request.course.id'}.'.'.
1.57 www 2101: $spacequalifierrest};
2102: } elsif ($realm eq 'resource') {
1.127 ng 2103: if ($ENV{'request.course.id'}) {
1.165 www 2104:
2105: # print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
2106:
2107:
1.60 www 2108: # ----------------------------------------------------- Cascading lookup scheme
1.147 www 2109: my $symbp;
2110: if ($symbparm) {
2111: $symbp=$symbparm;
2112: } else {
2113: $symbp=&symbread();
2114: }
1.127 ng 2115: my $mapp=(split(/\_\_\_/,$symbp))[0];
1.69 www 2116:
1.127 ng 2117: my $symbparm=$symbp.'.'.$spacequalifierrest;
2118: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
1.69 www 2119:
1.127 ng 2120: my $seclevel=
1.69 www 2121: $ENV{'request.course.id'}.'.['.
2122: $ENV{'request.course.sec'}.'].'.$spacequalifierrest;
1.127 ng 2123: my $seclevelr=
1.69 www 2124: $ENV{'request.course.id'}.'.['.
2125: $ENV{'request.course.sec'}.'].'.$symbparm;
1.127 ng 2126: my $seclevelm=
1.69 www 2127: $ENV{'request.course.id'}.'.['.
2128: $ENV{'request.course.sec'}.'].'.$mapparm;
2129:
1.127 ng 2130: my $courselevel=
1.60 www 2131: $ENV{'request.course.id'}.'.'.$spacequalifierrest;
1.127 ng 2132: my $courselevelr=
1.69 www 2133: $ENV{'request.course.id'}.'.'.$symbparm;
1.127 ng 2134: my $courselevelm=
1.69 www 2135: $ENV{'request.course.id'}.'.'.$mapparm;
2136:
1.60 www 2137: # ----------------------------------------------------------- first, check user
1.127 ng 2138: my %resourcedata=get('resourcedata',
1.131 albertel 2139: [$courselevelr,$courselevelm,$courselevel]);
1.127 ng 2140: if (($resourcedata{$courselevelr}!~/^error\:/) &&
2141: ($resourcedata{$courselevelr}!~/^con_lost/)) {
1.69 www 2142:
1.127 ng 2143: if ($resourcedata{$courselevelr}) {
2144: return $resourcedata{$courselevelr}; }
2145: if ($resourcedata{$courselevelm}) {
2146: return $resourcedata{$courselevelm}; }
2147: if ($resourcedata{$courselevel}) { return $resourcedata{$courselevel}; }
1.69 www 2148:
1.94 www 2149: } else {
2150: if ($resourcedata{$courselevelr}!~/No such file/) {
2151: &logthis("<font color=blue>WARNING:".
2152: " Trying to get resource data for ".$ENV{'user.name'}." at "
2153: .$ENV{'user.domain'}.": ".$resourcedata{$courselevelr}.
2154: "</font>");
2155: }
1.63 www 2156: }
1.95 www 2157:
1.60 www 2158: # -------------------------------------------------------- second, check course
1.96 www 2159:
1.60 www 2160: my $reply=&reply('get:'.
1.96 www 2161: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.':'.
2162: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
1.79 www 2163: ':resourcedata:'.
2164: &escape($seclevelr).'&'.&escape($seclevelm).'&'.&escape($seclevel).'&'.
2165: &escape($courselevelr).'&'.&escape($courselevelm).'&'.&escape($courselevel),
1.96 www 2166: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
1.63 www 2167: if ($reply!~/^error\:/) {
1.79 www 2168: map {
2169: if ($_) { return &unescape($_); }
2170: } split(/\&/,$reply);
1.63 www 2171: }
1.94 www 2172: if (($reply=~/^con_lost/) || ($reply=~/^error\:/)) {
2173: &logthis("<font color=blue>WARNING:".
1.95 www 2174: " Getting ".$reply." asking for ".$varname." for ".
1.96 www 2175: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
1.95 www 2176: ' at '.
1.96 www 2177: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.
1.95 www 2178: ' from '.
1.96 www 2179: $ENV{'course.'.$ENV{'request.course.id'}.'.home'}.
1.94 www 2180: "</font>");
2181: }
1.60 www 2182: # ------------------------------------------------------ third, check map parms
1.65 www 2183: my %parmhash=();
2184: my $thisparm='';
2185: if (tie(%parmhash,'GDBM_File',
2186: $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER,0640)) {
2187: $thisparm=$parmhash{$symbparm};
2188: untie(%parmhash);
1.60 www 2189: }
1.65 www 2190: if ($thisparm) { return $thisparm; }
1.60 www 2191: }
2192:
2193: # --------------------------------------------- last, look in resource metadata
1.71 www 2194:
1.78 www 2195: $spacequalifierrest=~s/\./\_/;
1.71 www 2196: my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest);
2197: if ($metadata) { return $metadata; }
1.78 www 2198: $metadata=&metadata($ENV{'request.filename'},
2199: 'parameter_'.$spacequalifierrest);
2200: if ($metadata) { return $metadata; }
1.142 www 2201:
1.145 www 2202: # ------------------------------------------------------------------ Cascade up
2203:
2204: unless ($space eq '0') {
1.165 www 2205: my ($part,$id)=split(/\_/,$space);
1.145 www 2206: if ($id) {
1.147 www 2207: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
2208: $symbparm);
1.145 www 2209: if ($partgeneral) { return $partgeneral; }
2210: } else {
1.147 www 2211: my $resourcegeneral=&EXT('resource.0.'.$qualifierrest,
2212: $symbparm);
1.145 www 2213: if ($resourcegeneral) { return $resourcegeneral; }
2214: }
2215: }
1.71 www 2216:
1.48 www 2217: # ---------------------------------------------------- Any other user namespace
2218: } elsif ($realm eq 'environment') {
2219: # ----------------------------------------------------------------- environment
1.127 ng 2220: return $ENV{'environment.'.$spacequalifierrest};
1.28 www 2221: } elsif ($realm eq 'system') {
1.48 www 2222: # ----------------------------------------------------------------- system.time
2223: if ($space eq 'time') {
2224: return time;
2225: }
1.28 www 2226: }
1.48 www 2227: return '';
1.61 www 2228: }
2229:
1.71 www 2230: # ---------------------------------------------------------------- Get metadata
2231:
2232: sub metadata {
2233: my ($uri,$what)=@_;
1.78 www 2234:
1.71 www 2235: $uri=&declutter($uri);
1.73 www 2236: my $filename=$uri;
2237: $uri=~s/\.meta$//;
1.71 www 2238: unless ($metacache{$uri.':keys'}) {
1.140 www 2239: my %metathesekeys=();
1.73 www 2240: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
2241: my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
1.71 www 2242: my $parser=HTML::TokeParser->new(\$metastring);
2243: my $token;
1.140 www 2244: undef %metathesekeys;
1.71 www 2245: while ($token=$parser->get_token) {
2246: if ($token->[0] eq 'S') {
1.135 www 2247: if (defined($token->[2]->{'package'})) {
1.136 www 2248: my $package=$token->[2]->{'package'};
2249: my $keyroot='';
2250: if (defined($token->[2]->{'part'})) {
2251: $keyroot.='_'.$token->[2]->{'part'};
2252: }
2253: if (defined($token->[2]->{'id'})) {
1.165 www 2254: $keyroot.='_'.$token->[2]->{'id'};
1.136 www 2255: }
2256: if ($metacache{$uri.':packages'}) {
2257: $metacache{$uri.':packages'}.=','.$package.$keyroot;
2258: } else {
2259: $metacache{$uri.':packages'}=$package.$keyroot;
2260: }
1.137 www 2261: map {
2262: if ($_=~/^$package\&/) {
2263: my ($pack,$name,$subp)=split(/\&/,$_);
1.139 www 2264: my $value=$packagetab{$_};
1.144 www 2265: my $part=$keyroot;
2266: $part=~s/^\_//;
1.139 www 2267: if ($subp eq 'display') {
2268: $value.=' [Part: '.$part.']';
2269: }
2270: my $unikey='parameter'.$keyroot.'_'.$name;
1.140 www 2271: $metathesekeys{$unikey}=1;
1.144 www 2272: $metacache{$uri.':'.$unikey.'.part'}=$part;
1.141 www 2273: unless
2274: (defined($metacache{$uri.':'.$unikey.'.'.$subp})) {
2275: $metacache{$uri.':'.$unikey.'.'.$subp}=$value;
2276: }
1.137 www 2277: }
2278: } keys %packagetab;
1.135 www 2279: } else {
1.71 www 2280: my $entry=$token->[1];
2281: my $unikey=$entry;
1.72 www 2282: if (defined($token->[2]->{'part'})) {
1.71 www 2283: $unikey.='_'.$token->[2]->{'part'};
1.136 www 2284: }
2285: if (defined($token->[2]->{'id'})) {
1.165 www 2286: $unikey.='_'.$token->[2]->{'id'};
1.71 www 2287: }
1.72 www 2288: if (defined($token->[2]->{'name'})) {
1.71 www 2289: $unikey.='_'.$token->[2]->{'name'};
2290: }
1.140 www 2291: $metathesekeys{$unikey}=1;
1.71 www 2292: map {
2293: $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.72 www 2294: } @{$token->[3]};
1.78 www 2295: unless (
2296: $metacache{$uri.':'.$unikey}=$parser->get_text('/'.$entry)
2297: ) { $metacache{$uri.':'.$unikey}=
2298: $metacache{$uri.':'.$unikey.'.default'};
2299: }
1.135 www 2300: }
1.140 www 2301: }
1.71 www 2302: }
1.140 www 2303: $metacache{$uri.':keys'}=join(',',keys %metathesekeys);
1.71 www 2304: }
2305: return $metacache{$uri.':'.$what};
2306: }
2307:
1.31 www 2308: # ------------------------------------------------- Update symbolic store links
2309:
2310: sub symblist {
2311: my ($mapname,%newhash)=@_;
2312: $mapname=declutter($mapname);
2313: my %hash;
2314: if (($ENV{'request.course.fn'}) && (%newhash)) {
2315: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
2316: &GDBM_WRCREAT,0640)) {
2317: map {
2318: $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
2319: } keys %newhash;
2320: if (untie(%hash)) {
2321: return 'ok';
2322: }
2323: }
2324: }
2325: return 'error';
2326: }
2327:
2328: # ------------------------------------------------------ Return symb list entry
2329:
2330: sub symbread {
1.44 www 2331: my $thisfn=shift;
2332: unless ($thisfn) {
2333: $thisfn=$ENV{'request.filename'};
2334: }
2335: $thisfn=declutter($thisfn);
1.31 www 2336: my %hash;
1.37 www 2337: my %bighash;
2338: my $syval='';
1.45 www 2339: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.31 www 2340: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
2341: &GDBM_READER,0640)) {
2342: $syval=$hash{$thisfn};
1.37 www 2343: untie(%hash);
2344: }
2345: # ---------------------------------------------------------- There was an entry
2346: if ($syval) {
2347: unless ($syval=~/\_\d+$/) {
2348: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.44 www 2349: &appenv('request.ambiguous' => $thisfn);
1.37 www 2350: return '';
2351: }
2352: $syval.=$1;
2353: }
2354: } else {
2355: # ------------------------------------------------------- Was not in symb table
2356: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
2357: &GDBM_READER,0640)) {
2358: # ---------------------------------------------- Get ID(s) for current resource
2359: my $ids=$bighash{'ids_/res/'.$thisfn};
1.65 www 2360: unless ($ids) {
2361: $ids=$bighash{'ids_/'.$thisfn};
2362: }
1.37 www 2363: if ($ids) {
2364: # ------------------------------------------------------------------- Has ID(s)
2365: my @possibilities=split(/\,/,$ids);
1.39 www 2366: if ($#possibilities==0) {
2367: # ----------------------------------------------- There is only one possibility
1.37 www 2368: my ($mapid,$resid)=split(/\./,$ids);
2369: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
2370: } else {
1.39 www 2371: # ------------------------------------------ There is more than one possibility
2372: my $realpossible=0;
2373: map {
2374: my $file=$bighash{'src_'.$_};
2375: if (&allowed('bre',$file)) {
2376: my ($mapid,$resid)=split(/\./,$_);
2377: if ($bighash{'map_type_'.$mapid} ne 'page') {
2378: $realpossible++;
2379: $syval=declutter($bighash{'map_id_'.$mapid}).
2380: '___'.$resid;
2381: }
2382: }
2383: } @possibilities;
2384: if ($realpossible!=1) { $syval=''; }
1.37 www 2385: }
2386: }
2387: untie(%bighash)
2388: }
1.31 www 2389: }
1.62 www 2390: if ($syval) {
2391: return $syval.'___'.$thisfn;
2392: }
1.31 www 2393: }
1.44 www 2394: &appenv('request.ambiguous' => $thisfn);
1.31 www 2395: return '';
2396: }
2397:
2398: # ---------------------------------------------------------- Return random seed
2399:
1.32 www 2400: sub numval {
2401: my $txt=shift;
2402: $txt=~tr/A-J/0-9/;
2403: $txt=~tr/a-j/0-9/;
2404: $txt=~tr/K-T/0-9/;
2405: $txt=~tr/k-t/0-9/;
2406: $txt=~tr/U-Z/0-5/;
2407: $txt=~tr/u-z/0-5/;
2408: $txt=~s/\D//g;
2409: return int($txt);
2410: }
2411:
1.31 www 2412: sub rndseed {
1.155 albertel 2413: my ($symb,$courseid,$domain,$username)=@_;
2414: if (!$symb) {
2415: unless ($symb=&symbread()) { return time; }
2416: }
2417: if (!$courseid) { $courseid=$ENV{'request.course.id'};}
2418: if (!$domain) {$domain=$ENV{'user.domain'};}
2419: if (!$username) {$username=$ENV{'user.name'};}
2420: {
1.98 albertel 2421: use integer;
2422: my $symbchck=unpack("%32C*",$symb) << 27;
1.100 albertel 2423: my $symbseed=numval($symb) << 22;
1.155 albertel 2424: my $namechck=unpack("%32C*",$username) << 17;
2425: my $nameseed=numval($username) << 12;
2426: my $domainseed=unpack("%32C*",$domain) << 7;
2427: my $courseseed=unpack("%32C*",$courseid);
1.98 albertel 2428: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
1.99 albertel 2429: #uncommenting these lines can break things!
2430: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
2431: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.98 albertel 2432: return $num;
2433: }
1.36 albertel 2434: }
2435:
1.76 www 2436: sub ireceipt {
2437: my ($funame,$fudom,$fucourseid,$fusymb)=@_;
2438: my $cuname=unpack("%32C*",$funame);
2439: my $cudom=unpack("%32C*",$fudom);
2440: my $cucourseid=unpack("%32C*",$fucourseid);
2441: my $cusymb=unpack("%32C*",$fusymb);
1.77 www 2442: my $cunique=unpack("%32C*",$perlvar{'lonReceipt'});
1.76 www 2443: return unpack("%32C*",$perlvar{'lonHostID'}).'-'.
2444: ($cunique%$cuname+
2445: $cunique%$cudom+
2446: $cusymb%$cuname+
2447: $cusymb%$cudom+
2448: $cucourseid%$cuname+
2449: $cucourseid%$cudom);
2450: }
2451:
2452: sub receipt {
2453: return &ireceipt($ENV{'user.name'},$ENV{'user.domain'},
2454: $ENV{'request.course.id'},&symbread());
2455: }
2456:
1.36 albertel 2457: # ------------------------------------------------------------ Serves up a file
2458: # returns either the contents of the file or a -1
2459: sub getfile {
2460: my $file=shift;
1.37 www 2461: &repcopy($file);
1.36 albertel 2462: if (! -e $file ) { return -1; };
2463: my $fh=Apache::File->new($file);
2464: my $a='';
2465: while (<$fh>) { $a .=$_; }
2466: return $a
2467: }
2468:
2469: sub filelocation {
2470: my ($dir,$file) = @_;
2471: my $location;
2472: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1.59 albertel 2473: if ($file=~m:^/~:) { # is a contruction space reference
2474: $location = $file;
2475: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.36 albertel 2476: } else {
1.59 albertel 2477: $file=~s/^$perlvar{'lonDocRoot'}//;
2478: $file=~s:^/*res::;
2479: if ( !( $file =~ m:^/:) ) {
2480: $location = $dir. '/'.$file;
2481: } else {
2482: $location = '/home/httpd/html/res'.$file;
2483: }
1.36 albertel 2484: }
2485: $location=~s://+:/:g; # remove duplicate /
1.46 www 2486: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
2487: return $location;
2488: }
1.36 albertel 2489:
1.46 www 2490: sub hreflocation {
2491: my ($dir,$file)=@_;
2492: unless (($_=~/^http:\/\//i) || ($_=~/^\//)) {
2493: my $finalpath=filelocation($dir,$file);
2494: $finalpath=~s/^\/home\/httpd\/html//;
2495: return $finalpath;
2496: } else {
2497: return $file;
2498: }
1.31 www 2499: }
2500:
2501: # ------------------------------------------------------------- Declutters URLs
2502:
2503: sub declutter {
2504: my $thisfn=shift;
2505: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
2506: $thisfn=~s/^\///;
2507: $thisfn=~s/^res\///;
2508: return $thisfn;
1.12 www 2509: }
2510:
2511: # -------------------------------------------------------- Escape Special Chars
2512:
2513: sub escape {
2514: my $str=shift;
2515: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
2516: return $str;
2517: }
2518:
2519: # ----------------------------------------------------- Un-Escape Special Chars
2520:
2521: sub unescape {
2522: my $str=shift;
2523: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2524: return $str;
2525: }
1.11 www 2526:
1.1 albertel 2527: # ================================================================ Main Program
2528:
2529: sub BEGIN {
1.160 www 2530: unless ($readit) {
1.1 albertel 2531: # ------------------------------------------------------------ Read access.conf
2532: {
2533: my $config=Apache::File->new("/etc/httpd/conf/access.conf");
2534:
2535: while (my $configline=<$config>) {
2536: if ($configline =~ /PerlSetVar/) {
2537: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 2538: chomp($varvalue);
1.1 albertel 2539: $perlvar{$varname}=$varvalue;
2540: }
2541: }
2542: }
2543:
2544: # ------------------------------------------------------------- Read hosts file
2545: {
2546: my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
2547:
2548: while (my $configline=<$config>) {
1.154 www 2549: chomp($configline);
1.1 albertel 2550: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
2551: $hostname{$id}=$name;
2552: $hostdom{$id}=$domain;
1.150 www 2553: $hostip{$id}=$ip;
1.1 albertel 2554: if ($role eq 'library') { $libserv{$id}=$name; }
2555: }
2556: }
2557:
2558: # ------------------------------------------------------ Read spare server file
2559: {
2560: my $config=Apache::File->new("$perlvar{'lonTabDir'}/spare.tab");
2561:
2562: while (my $configline=<$config>) {
2563: chomp($configline);
2564: if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
2565: $spareid{$configline}=1;
2566: }
2567: }
2568: }
1.11 www 2569: # ------------------------------------------------------------ Read permissions
2570: {
2571: my $config=Apache::File->new("$perlvar{'lonTabDir'}/roles.tab");
2572:
2573: while (my $configline=<$config>) {
2574: chomp($configline);
1.160 www 2575: if ($configline) {
1.11 www 2576: my ($role,$perm)=split(/ /,$configline);
2577: if ($perm ne '') { $pr{$role}=$perm; }
1.160 www 2578: }
1.11 www 2579: }
2580: }
2581:
2582: # -------------------------------------------- Read plain texts for permissions
2583: {
2584: my $config=Apache::File->new("$perlvar{'lonTabDir'}/rolesplain.tab");
2585:
2586: while (my $configline=<$config>) {
2587: chomp($configline);
1.160 www 2588: if ($configline) {
1.11 www 2589: my ($short,$plain)=split(/:/,$configline);
2590: if ($plain ne '') { $prp{$short}=$plain; }
1.160 www 2591: }
1.135 www 2592: }
2593: }
2594:
2595: # ---------------------------------------------------------- Read package table
2596: {
2597: my $config=Apache::File->new("$perlvar{'lonTabDir'}/packages.tab");
2598:
2599: while (my $configline=<$config>) {
2600: chomp($configline);
2601: my ($short,$plain)=split(/:/,$configline);
1.143 www 2602: my ($pack,$name)=split(/\&/,$short);
2603: if ($plain ne '') {
2604: $packagetab{$pack.'&'.$name.'&name'}=$name;
2605: $packagetab{$short}=$plain;
2606: }
1.25 www 2607: }
2608: }
2609:
2610: # ------------------------------------------------------------- Read file types
2611: {
2612: my $config=Apache::File->new("$perlvar{'lonTabDir'}/filetypes.tab");
2613:
2614: while (my $configline=<$config>) {
2615: chomp($configline);
2616: my ($ending,$emb,@descr)=split(/\s+/,$configline);
2617: if ($descr[0] ne '') {
2618: $fe{$ending}=$emb;
2619: $fd{$ending}=join(' ',@descr);
2620: }
1.11 www 2621: }
2622: }
2623:
1.71 www 2624: %metacache=();
1.22 www 2625:
1.1 albertel 2626: $readit='done';
1.163 harris41 2627: &logtouch();
1.12 www 2628: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.1 albertel 2629: }
2630: }
2631: 1;
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