Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.110
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
4: # Functions for use by content handlers:
5: #
1.108 harris41 6: # metadata_query(sql-query-string) : returns file handle of where sql
7: # results will be stored for query
1.12 www 8: # plaintext(short) : plain text explanation of short term
1.25 www 9: # fileembstyle(ext) : embed style in page for file extension
10: # filedescription(ext) : descriptor text for file extension
1.29 www 11: # allowed(short,url) : returns codes for allowed actions
12: # F: full access
13: # U,I,K: authentication modes (cxx only)
14: # '': forbidden
15: # 1: user needs to choose course
16: # 2: browse allowed
1.21 www 17: # definerole(rolename,sys,dom,cou) : define a custom role rolename
1.103 harris41 18: # set privileges in format of lonTabs/roles.tab for
1.21 www 19: # system, domain and course level,
20: # assignrole(udom,uname,url,role,end,start) : give a role to a user for the
21: # level given by url. Optional start and end dates
22: # (leave empty string or zero for "no date")
23: # assigncustomrole (udom,uname,url,rdom,rnam,rolename,end,start) : give a
24: # custom role to a user for the level given by url.
25: # Specify name and domain of role author, and role name
26: # revokerole (udom,uname,url,role) : Revoke a role for url
27: # revokecustomrole (udom,uname,url,rdom,rnam,rolename) : Revoke a custom role
1.24 www 28: # appenv(hash) : adds hash to session environment
1.56 www 29: # delenv(varname) : deletes all environment entries starting with varname
1.12 www 30: # store(hash) : stores hash permanently for this url
1.47 www 31: # cstore(hash) : critical store
1.12 www 32: # restore : returns hash for this url
33: # eget(namesp,array) : returns hash with keys from array filled in from namesp
34: # get(namesp,array) : returns hash with keys from array filled in from namesp
1.38 www 35: # del(namesp,array) : deletes keys out of array from namesp
1.12 www 36: # put(namesp,hash) : stores hash in namesp
1.47 www 37: # cput(namesp,hash) : critical put
1.15 www 38: # dump(namesp) : dumps the complete namespace into a hash
1.23 www 39: # ssi(url,hash) : does a complete request cycle on url to localhost, posts
40: # hash
1.34 www 41: # coursedescription(id) : returns and caches course description for id
1.17 www 42: # repcopy(filename) : replicate file
43: # dirlist(url) : gets a directory listing
1.40 www 44: # directcondval(index) : reading condition value of single condition from
45: # state string
1.28 www 46: # condval(index) : value of condition index based on state
1.58 www 47: # EXT(name) : value of a variable
1.31 www 48: # symblist(map,hash) : Updates symbolic storage links
1.44 www 49: # symbread([filename]) : returns the data handle (filename optional)
1.76 www 50: # rndseed() : returns a random seed
51: # receipt() : returns a receipt to be given out to users
1.36 albertel 52: # getfile(filename) : returns the contents of filename, or a -1 if it can't
53: # be found, replicates and subscribes to the file
54: # filelocation(dir,file) : returns a farily clean absolute reference to file
55: # from the directory dir
1.46 www 56: # hreflocation(dir,file) : same as filelocation, but for hrefs
1.47 www 57: # log(domain,user,home,msg) : write to permanent log for user
1.70 www 58: # usection(domain,user,courseid) : output of section name/number or '' for
59: # "not in course" and '-1' for "no section"
60: # userenvironment(domain,user,what) : puts out any environment parameter
61: # for a user
62: # idput(domain,hash) : writes IDs for users from hash (name=>id,name=>id)
63: # idget(domain,array): returns hash with usernames (id=>name,id=>name) for
64: # an array of IDs
65: # idrget(domain,array): returns hash with IDs for usernames (name=>id,...) for
66: # an array of names
1.73 www 67: # metadata(file,entry): returns the metadata entry for a file. entry='keys'
68: # returns a comma separated list of keys
1.12 www 69: #
1.1 albertel 70: # 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
1.5 www 71: # 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
1.8 www 72: # 11/8,11/16,11/18,11/22,11/23,12/22,
1.12 www 73: # 01/06,01/13,02/24,02/28,02/29,
74: # 03/01,03/02,03/06,03/07,03/13,
1.15 www 75: # 04/05,05/29,05/31,06/01,
76: # 06/05,06/26 Gerd Kortemeyer
77: # 06/26 Ben Tyszka
1.22 www 78: # 06/30,07/15,07/17,07/18,07/20,07/21,07/22,07/25 Gerd Kortemeyer
1.23 www 79: # 08/14 Ben Tyszka
1.36 albertel 80: # 08/22,08/28,08/31,09/01,09/02,09/04,09/05,09/25,09/28,09/30 Gerd Kortemeyer
1.35 www 81: # 10/04 Gerd Kortemeyer
1.36 albertel 82: # 10/04 Guy Albertelli
1.54 www 83: # 10/06,10/09,10/10,10/11,10/14,10/20,10/23,10/25,10/26,10/27,10/28,10/29,
1.71 www 84: # 10/30,10/31,
1.75 www 85: # 11/2,11/14,11/15,11/16,11/20,11/21,11/22,11/25,11/27,
1.83 www 86: # 12/02,12/12,12/13,12/14,12/28,12/29 Gerd Kortemeyer
1.87 www 87: # 05/01/01 Guy Albertelli
1.89 www 88: # 05/01,06/01,09/01 Gerd Kortemeyer
1.92 www 89: # 09/01 Guy Albertelli
1.102 www 90: # 09/01,10/01,11/01 Gerd Kortemeyer
1.103 harris41 91: # 02/27/01 Scott Harrison
1.104 www 92: # 3/2 Gerd Kortemeyer
1.105 harris41 93: # 3/15 Scott Harrison
1.110 ! www 94: # 3/19,3/20 Gerd Kortemeyer
1.1 albertel 95:
96: package Apache::lonnet;
97:
98: use strict;
99: use Apache::File;
1.8 www 100: use LWP::UserAgent();
1.15 www 101: use HTTP::Headers;
1.11 www 102: use vars
1.77 www 103: qw(%perlvar %hostname %homecache %spareid %hostdom %libserv %pr %prp %fe %fd $readit %metacache);
1.1 albertel 104: use IO::Socket;
1.31 www 105: use GDBM_File;
1.8 www 106: use Apache::Constants qw(:common :http);
1.71 www 107: use HTML::TokeParser;
1.88 www 108: use Fcntl qw(:flock);
1.1 albertel 109:
110: # --------------------------------------------------------------------- Logging
111:
112: sub logthis {
113: my $message=shift;
114: my $execdir=$perlvar{'lonDaemons'};
115: my $now=time;
116: my $local=localtime($now);
117: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
118: print $fh "$local ($$): $message\n";
119: return 1;
120: }
121:
122: sub logperm {
123: my $message=shift;
124: my $execdir=$perlvar{'lonDaemons'};
125: my $now=time;
126: my $local=localtime($now);
127: my $fh=Apache::File->new(">>$execdir/logs/lonnet.perm.log");
128: print $fh "$now:$message:$local\n";
129: return 1;
130: }
131:
132: # -------------------------------------------------- Non-critical communication
133: sub subreply {
134: my ($cmd,$server)=@_;
135: my $peerfile="$perlvar{'lonSockDir'}/$server";
136: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
137: Type => SOCK_STREAM,
138: Timeout => 10)
139: or return "con_lost";
140: print $client "$cmd\n";
141: my $answer=<$client>;
1.9 www 142: if (!$answer) { $answer="con_lost"; }
1.1 albertel 143: chomp($answer);
144: return $answer;
145: }
146:
147: sub reply {
148: my ($cmd,$server)=@_;
149: my $answer=subreply($cmd,$server);
150: if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
1.65 www 151: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.12 www 152: &logthis("<font color=blue>WARNING:".
153: " $cmd to $server returned $answer</font>");
154: }
1.1 albertel 155: return $answer;
156: }
157:
158: # ----------------------------------------------------------- Send USR1 to lonc
159:
160: sub reconlonc {
161: my $peerfile=shift;
162: &logthis("Trying to reconnect for $peerfile");
163: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
164: if (my $fh=Apache::File->new("$loncfile")) {
165: my $loncpid=<$fh>;
166: chomp($loncpid);
167: if (kill 0 => $loncpid) {
168: &logthis("lonc at pid $loncpid responding, sending USR1");
169: kill USR1 => $loncpid;
170: sleep 1;
171: if (-e "$peerfile") { return; }
172: &logthis("$peerfile still not there, give it another try");
173: sleep 5;
174: if (-e "$peerfile") { return; }
1.12 www 175: &logthis(
176: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 177: } else {
1.12 www 178: &logthis(
179: "<font color=blue>WARNING:".
180: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 181: }
182: } else {
1.12 www 183: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 184: }
185: }
186:
187: # ------------------------------------------------------ Critical communication
1.12 www 188:
1.1 albertel 189: sub critical {
190: my ($cmd,$server)=@_;
1.89 www 191: unless ($hostname{$server}) {
192: &logthis("<font color=blue>WARNING:".
193: " Critical message to unknown server ($server)</font>");
194: return 'no_such_host';
195: }
1.1 albertel 196: my $answer=reply($cmd,$server);
197: if ($answer eq 'con_lost') {
198: my $pingreply=reply('ping',$server);
199: &reconlonc("$perlvar{'lonSockDir'}/$server");
200: my $pongreply=reply('pong',$server);
201: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
202: $answer=reply($cmd,$server);
203: if ($answer eq 'con_lost') {
204: my $now=time;
205: my $middlename=$cmd;
1.5 www 206: $middlename=substr($middlename,0,16);
1.1 albertel 207: $middlename=~s/\W//g;
208: my $dfilename=
209: "$perlvar{'lonSockDir'}/delayed/$now.$middlename.$server";
210: {
211: my $dfh;
212: if ($dfh=Apache::File->new(">$dfilename")) {
1.7 www 213: print $dfh "$cmd\n";
1.1 albertel 214: }
215: }
216: sleep 2;
217: my $wcmd='';
218: {
219: my $dfh;
220: if ($dfh=Apache::File->new("$dfilename")) {
221: $wcmd=<$dfh>;
222: }
223: }
224: chomp($wcmd);
1.7 www 225: if ($wcmd eq $cmd) {
1.12 www 226: &logthis("<font color=blue>WARNING: ".
227: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 228: &logperm("D:$server:$cmd");
229: return 'con_delayed';
230: } else {
1.12 www 231: &logthis("<font color=red>CRITICAL:"
232: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 233: &logperm("F:$server:$cmd");
234: return 'con_failed';
235: }
236: }
237: }
238: return $answer;
239: }
240:
1.5 www 241: # ---------------------------------------------------------- Append Environment
242:
243: sub appenv {
1.6 www 244: my %newenv=@_;
1.35 www 245: map {
246: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
247: &logthis("<font color=blue>WARNING: ".
248: "Attempt to modify environment ".$_." to ".$newenv{$_});
249: delete($newenv{$_});
250: } else {
251: $ENV{$_}=$newenv{$_};
252: }
253: } keys %newenv;
1.95 www 254:
255: my $lockfh;
256: unless ($lockfh=Apache::File->new("$ENV{'user.environment'}")) {
1.97 www 257: return 'error: '.$!;
1.95 www 258: }
259: unless (flock($lockfh,LOCK_EX)) {
260: &logthis("<font color=blue>WARNING: ".
261: 'Could not obtain exclusive lock in appenv: '.$!);
262: $lockfh->close();
263: return 'error: '.$!;
264: }
265:
1.6 www 266: my @oldenv;
267: {
268: my $fh;
269: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
1.97 www 270: return 'error: '.$!;
1.6 www 271: }
272: @oldenv=<$fh>;
1.89 www 273: $fh->close();
1.6 www 274: }
275: for (my $i=0; $i<=$#oldenv; $i++) {
276: chomp($oldenv[$i]);
1.9 www 277: if ($oldenv[$i] ne '') {
278: my ($name,$value)=split(/=/,$oldenv[$i]);
1.24 www 279: unless (defined($newenv{$name})) {
280: $newenv{$name}=$value;
281: }
1.9 www 282: }
1.6 www 283: }
284: {
285: my $fh;
286: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
287: return 'error';
288: }
289: my $newname;
1.93 www 290: foreach $newname (keys %newenv) {
1.6 www 291: print $fh "$newname=$newenv{$newname}\n";
292: }
1.86 albertel 293: $fh->close();
1.56 www 294: }
1.95 www 295:
296: $lockfh->close();
1.56 www 297: return 'ok';
298: }
299: # ----------------------------------------------------- Delete from Environment
300:
301: sub delenv {
302: my $delthis=shift;
303: my %newenv=();
304: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
305: &logthis("<font color=blue>WARNING: ".
306: "Attempt to delete from environment ".$delthis);
307: return 'error';
308: }
309: my @oldenv;
310: {
311: my $fh;
312: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
313: return 'error';
314: }
1.89 www 315: unless (flock($fh,LOCK_SH)) {
316: &logthis("<font color=blue>WARNING: ".
317: 'Could not obtain shared lock in delenv: '.$!);
318: $fh->close();
319: return 'error: '.$!;
320: }
1.56 www 321: @oldenv=<$fh>;
1.89 www 322: $fh->close();
1.56 www 323: }
324: {
325: my $fh;
326: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
327: return 'error';
328: }
1.89 www 329: unless (flock($fh,LOCK_EX)) {
330: &logthis("<font color=blue>WARNING: ".
331: 'Could not obtain exclusive lock in delenv: '.$!);
332: $fh->close();
333: return 'error: '.$!;
334: }
1.56 www 335: map {
336: unless ($_=~/^$delthis/) { print $fh $_; }
337: } @oldenv;
1.87 www 338: $fh->close();
1.5 www 339: }
340: return 'ok';
341: }
1.1 albertel 342:
343: # ------------------------------ Find server with least workload from spare.tab
1.11 www 344:
1.1 albertel 345: sub spareserver {
346: my $tryserver;
347: my $spareserver='';
348: my $lowestserver=100;
349: foreach $tryserver (keys %spareid) {
350: my $answer=reply('load',$tryserver);
351: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
352: $spareserver="http://$hostname{$tryserver}";
353: $lowestserver=$answer;
354: }
355: }
356: return $spareserver;
357: }
358:
359: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 360:
1.1 albertel 361: sub authenticate {
362: my ($uname,$upass,$udom)=@_;
1.12 www 363: $upass=escape($upass);
1.1 albertel 364: if (($perlvar{'lonRole'} eq 'library') &&
365: ($udom eq $perlvar{'lonDefDomain'})) {
1.3 www 366: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$perlvar{'lonHostID'});
1.2 www 367: if ($answer =~ /authorized/) {
1.9 www 368: if ($answer eq 'authorized') {
369: &logthis("User $uname at $udom authorized by local server");
370: return $perlvar{'lonHostID'};
371: }
372: if ($answer eq 'non_authorized') {
373: &logthis("User $uname at $udom rejected by local server");
374: return 'no_host';
375: }
1.2 www 376: }
1.1 albertel 377: }
378:
379: my $tryserver;
380: foreach $tryserver (keys %libserv) {
381: if ($hostdom{$tryserver} eq $udom) {
1.10 www 382: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$tryserver);
1.1 albertel 383: if ($answer =~ /authorized/) {
1.9 www 384: if ($answer eq 'authorized') {
385: &logthis("User $uname at $udom authorized by $tryserver");
386: return $tryserver;
387: }
388: if ($answer eq 'non_authorized') {
389: &logthis("User $uname at $udom rejected by $tryserver");
390: return 'no_host';
391: }
1.1 albertel 392: }
393: }
1.9 www 394: }
395: &logthis("User $uname at $udom could not be authenticated");
1.1 albertel 396: return 'no_host';
397: }
398:
399: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 400:
1.1 albertel 401: sub homeserver {
402: my ($uname,$udom)=@_;
403:
404: my $index="$uname:$udom";
405: if ($homecache{$index}) { return "$homecache{$index}"; }
406:
407: my $tryserver;
408: foreach $tryserver (keys %libserv) {
409: if ($hostdom{$tryserver} eq $udom) {
410: my $answer=reply("home:$udom:$uname",$tryserver);
411: if ($answer eq 'found') {
412: $homecache{$index}=$tryserver;
413: return $tryserver;
414: }
415: }
416: }
417: return 'no_host';
1.70 www 418: }
419:
420: # ------------------------------------- Find the usernames behind a list of IDs
421:
422: sub idget {
423: my ($udom,@ids)=@_;
424: my %returnhash=();
425:
426: my $tryserver;
427: foreach $tryserver (keys %libserv) {
428: if ($hostdom{$tryserver} eq $udom) {
429: my $idlist=join('&',@ids);
430: $idlist=~tr/A-Z/a-z/;
431: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
432: my @answer=();
1.76 www 433: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 434: @answer=split(/\&/,$reply);
435: } ;
436: my $i;
437: for ($i=0;$i<=$#ids;$i++) {
438: if ($answer[$i]) {
439: $returnhash{$ids[$i]}=$answer[$i];
440: }
441: }
442: }
443: }
444: return %returnhash;
445: }
446:
447: # ------------------------------------- Find the IDs behind a list of usernames
448:
449: sub idrget {
450: my ($udom,@unames)=@_;
451: my %returnhash=();
452: map {
453: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
454: } @unames;
455: return %returnhash;
456: }
457:
458: # ------------------------------- Store away a list of names and associated IDs
459:
460: sub idput {
461: my ($udom,%ids)=@_;
462: my %servers=();
463: map {
464: my $uhom=&homeserver($_,$udom);
465: if ($uhom ne 'no_host') {
466: my $id=&escape($ids{$_});
467: $id=~tr/A-Z/a-z/;
468: my $unam=&escape($_);
469: if ($servers{$uhom}) {
470: $servers{$uhom}.='&'.$id.'='.$unam;
471: } else {
472: $servers{$uhom}=$id.'='.$unam;
473: }
474: &critical('put:'.$udom.':'.$unam.':environment:id='.$id,$uhom);
475: }
476: } keys %ids;
477: map {
478: &critical('idput:'.$udom.':'.$servers{$_},$_);
479: } keys %servers;
480: }
481:
482: # ------------------------------------- Find the section of student in a course
483:
484: sub usection {
485: my ($udom,$unam,$courseid)=@_;
486: $courseid=~s/\_/\//g;
487: $courseid=~s/^(\w)/\/$1/;
488: map {
489: my ($key,$value)=split(/\=/,$_);
490: $key=&unescape($key);
491: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
492: my $section=$1;
493: if ($key eq $courseid.'_st') { $section=''; }
494: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
495: my $now=time;
496: my $notactive=0;
497: if ($start) {
498: if ($now<$start) { $notactive=1; }
499: }
500: if ($end) {
501: if ($now>$end) { $notactive=1; }
502: }
503: unless ($notactive) { return $section; }
504: }
505: } split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
506: &homeserver($unam,$udom)));
507: return '-1';
508: }
509:
510: # ------------------------------------- Read an entry from a user's environment
511:
512: sub userenvironment {
513: my ($udom,$unam,@what)=@_;
514: my %returnhash=();
515: my @answer=split(/\&/,
516: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
517: &homeserver($unam,$udom)));
518: my $i;
519: for ($i=0;$i<=$#what;$i++) {
520: $returnhash{$what[$i]}=&unescape($answer[$i]);
521: }
522: return %returnhash;
1.1 albertel 523: }
524:
525: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 526:
1.1 albertel 527: sub subscribe {
528: my $fname=shift;
529: my $author=$fname;
530: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
531: my ($udom,$uname)=split(/\//,$author);
532: my $home=homeserver($uname,$udom);
533: if (($home eq 'no_host') || ($home eq $perlvar{'lonHostID'})) {
534: return 'not_found';
535: }
536: my $answer=reply("sub:$fname",$home);
1.64 www 537: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
538: $answer.=' by '.$home;
539: }
1.1 albertel 540: return $answer;
541: }
542:
1.8 www 543: # -------------------------------------------------------------- Replicate file
544:
545: sub repcopy {
546: my $filename=shift;
1.23 www 547: $filename=~s/\/+/\//g;
1.8 www 548: my $transname="$filename.in.transfer";
1.17 www 549: if ((-e $filename) || (-e $transname)) { return OK; }
1.8 www 550: my $remoteurl=subscribe($filename);
1.64 www 551: if ($remoteurl =~ /^con_lost by/) {
552: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 553: return HTTP_SERVICE_UNAVAILABLE;
554: } elsif ($remoteurl eq 'not_found') {
555: &logthis("Subscribe returned not_found: $filename");
556: return HTTP_NOT_FOUND;
1.64 www 557: } elsif ($remoteurl =~ /^rejected by/) {
558: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 559: return FORBIDDEN;
1.20 www 560: } elsif ($remoteurl eq 'directory') {
561: return OK;
1.8 www 562: } else {
563: my @parts=split(/\//,$filename);
564: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
565: if ($path ne "$perlvar{'lonDocRoot'}/res") {
566: &logthis("Malconfiguration for replication: $filename");
567: return HTTP_BAD_REQUEST;
568: }
569: my $count;
570: for ($count=5;$count<$#parts;$count++) {
571: $path.="/$parts[$count]";
572: if ((-e $path)!=1) {
573: mkdir($path,0777);
574: }
575: }
576: my $ua=new LWP::UserAgent;
577: my $request=new HTTP::Request('GET',"$remoteurl");
578: my $response=$ua->request($request,$transname);
579: if ($response->is_error()) {
580: unlink($transname);
581: my $message=$response->status_line;
1.12 www 582: &logthis("<font color=blue>WARNING:"
583: ." LWP get: $message: $filename</font>");
1.8 www 584: return HTTP_SERVICE_UNAVAILABLE;
585: } else {
1.16 www 586: if ($remoteurl!~/\.meta$/) {
587: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
588: my $mresponse=$ua->request($mrequest,$filename.'.meta');
589: if ($mresponse->is_error()) {
590: unlink($filename.'.meta');
591: &logthis(
592: "<font color=yellow>INFO: No metadata: $filename</font>");
593: }
594: }
1.8 www 595: rename($transname,$filename);
596: return OK;
597: }
598: }
599: }
600:
1.15 www 601: # --------------------------------------------------------- Server Side Include
602:
603: sub ssi {
604:
1.23 www 605: my ($fn,%form)=@_;
1.15 www 606:
607: my $ua=new LWP::UserAgent;
1.23 www 608:
609: my $request;
610:
611: if (%form) {
612: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
613: $request->content(join '&', map { "$_=$form{$_}" } keys %form);
614: } else {
615: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
616: }
617:
1.15 www 618: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
619: my $response=$ua->request($request);
620:
621: return $response->content;
622: }
623:
1.14 www 624: # ------------------------------------------------------------------------- Log
625:
626: sub log {
627: my ($dom,$nam,$hom,$what)=@_;
1.47 www 628: return critical("log:$dom:$nam:$what",$hom);
1.110 ! www 629: }
! 630:
! 631: # --------------------------------------------- Set Expire Date for Spreadsheet
! 632:
! 633: sub expirespread {
! 634: my ($uname,$udom,$stype,$usymb)=@_;
! 635: my $cid=$ENV{'request.course.id'};
! 636: if ($cid) {
! 637: my $now=time;
! 638: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
! 639: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
! 640: $ENV{'course.'.$cid.'.num'}.
! 641: ':nohist_expirationdates:'.
! 642: &escape($key).'='.$now,
! 643: $ENV{'course.'.$cid.'.home'})
! 644: }
! 645: return 'ok';
1.14 www 646: }
647:
1.109 www 648: # ----------------------------------------------------- Devalidate Spreadsheets
649:
650: sub devalidate {
651: my $symb=shift;
652: my $cid=$ENV{'request.course.id'};
653: if ($cid) {
654: my $key=$ENV{'user.name'}.':'.$ENV{'user.domain'}.':';
655: my $status=
656: &reply('del:'.$ENV{'course.'.$cid.'.domain'}.':'.
657: $ENV{'course.'.$cid.'.num'}.
658: ':nohist_calculatedsheets:'.
659: &escape($key.'studentcalc:'),
660: $ENV{'course.'.$cid.'.home'})
661: .' '.
662: &reply('del:'.$ENV{'user.domain'}.':'.
663: $ENV{'user.name'}.
664: ':nohist_calculatedsheets_'.$cid.':'.
665: &escape($key.'assesscalc:'.$symb),
666: $ENV{'user.home'});
667: unless ($status eq 'ok ok') {
668: &logthis('Could not devalidate spreadsheet '.
669: $ENV{'user.name'}.' at '.$ENV{'user.domain'}.' for '.
670: $symb.': '.$status);
671: }
672: }
673: }
674:
1.9 www 675: # ----------------------------------------------------------------------- Store
676:
677: sub store {
1.31 www 678: my %storehash=@_;
679: my $symb;
1.109 www 680: unless ($symb=&symbread()) { return ''; }
681:
682: &devalidate($symb);
683:
684: $symb=escape($symb);
1.31 www 685: my $namespace;
1.33 www 686: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
1.12 www 687: my $namevalue='';
688: map {
689: $namevalue.=escape($_).'='.escape($storehash{$_}).'&';
690: } keys %storehash;
691: $namevalue=~s/\&$//;
1.31 www 692: return reply(
693: "store:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb:$namevalue",
1.12 www 694: "$ENV{'user.home'}");
1.9 www 695: }
696:
1.47 www 697: # -------------------------------------------------------------- Critical Store
698:
699: sub cstore {
700: my %storehash=@_;
701: my $symb;
1.109 www 702: unless ($symb=&symbread()) { return ''; }
703:
704: &devalidate($symb);
705:
706: $symb=escape($symb);
1.47 www 707: my $namespace;
708: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
709: my $namevalue='';
710: map {
711: $namevalue.=escape($_).'='.escape($storehash{$_}).'&';
712: } keys %storehash;
713: $namevalue=~s/\&$//;
714: return critical(
715: "store:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb:$namevalue",
716: "$ENV{'user.home'}");
717: }
718:
1.9 www 719: # --------------------------------------------------------------------- Restore
720:
721: sub restore {
1.31 www 722: my $symb;
1.44 www 723: unless ($symb=escape(&symbread())) { return ''; }
1.31 www 724: my $namespace;
1.33 www 725: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
1.31 www 726: my $answer=reply(
727: "restore:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb",
728: "$ENV{'user.home'}");
1.12 www 729: my %returnhash=();
730: map {
731: my ($name,$value)=split(/\=/,$_);
732: $returnhash{&unescape($name)}=&unescape($value);
733: } split(/\&/,$answer);
1.75 www 734: my $version;
735: for ($version=1;$version<=$returnhash{'version'};$version++) {
736: map {
737: $returnhash{$_}=$returnhash{$version.':'.$_};
738: } split(/\:/,$returnhash{$version.':keys'});
739: }
1.13 www 740: return %returnhash;
1.34 www 741: }
742:
743: # ---------------------------------------------------------- Course Description
744:
745: sub coursedescription {
746: my $courseid=shift;
747: $courseid=~s/^\///;
1.49 www 748: $courseid=~s/\_/\//g;
1.34 www 749: my ($cdomain,$cnum)=split(/\//,$courseid);
750: my $chome=homeserver($cnum,$cdomain);
751: if ($chome ne 'no_host') {
752: my $rep=reply("dump:$cdomain:$cnum:environment",$chome);
753: if ($rep ne 'con_lost') {
1.96 www 754: my $normalid=$cdomain.'_'.$cnum;
1.53 www 755: my %envhash=();
1.34 www 756: my %returnhash=('home' => $chome,
757: 'domain' => $cdomain,
758: 'num' => $cnum);
759: map {
760: my ($name,$value)=split(/\=/,$_);
761: $name=&unescape($name);
762: $value=&unescape($value);
763: $returnhash{$name}=$value;
1.53 www 764: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.34 www 765: } split(/\&/,$rep);
766: $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
767: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 768: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.54 www 769: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.60 www 770: $envhash{'course.'.$normalid.'.home'}=$chome;
771: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
772: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.53 www 773: &appenv(%envhash);
1.34 www 774: return %returnhash;
775: }
776: }
777: return ();
1.9 www 778: }
1.1 albertel 779:
1.103 harris41 780: # -------------------------------------------------------- Get user privileges
1.11 www 781:
782: sub rolesinit {
783: my ($domain,$username,$authhost)=@_;
784: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 785: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 786: my %allroles=();
787: my %thesepriv=();
788: my $now=time;
1.21 www 789: my $userroles="user.login.time=$now\n";
1.11 www 790: my $thesestr;
791:
792: if ($rolesdump ne '') {
793: map {
1.21 www 794: if ($_!~/^rolesdef\&/) {
1.11 www 795: my ($area,$role)=split(/=/,$_);
1.21 www 796: $area=~s/\_\w\w$//;
1.11 www 797: my ($trole,$tend,$tstart)=split(/_/,$role);
1.21 www 798: $userroles.='user.role.'.$trole.'.'.$area.'='.
799: $tstart.'.'.$tend."\n";
1.11 www 800: if ($tend!=0) {
801: if ($tend<$now) {
802: $trole='';
803: }
804: }
805: if ($tstart!=0) {
806: if ($tstart>$now) {
807: $trole='';
808: }
809: }
810: if (($area ne '') && ($trole ne '')) {
1.50 www 811: my $spec=$trole.'.'.$area;
1.12 www 812: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
813: if ($trole =~ /^cr\//) {
814: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
815: my $homsvr=homeserver($rauthor,$rdomain);
816: if ($hostname{$homsvr} ne '') {
817: my $roledef=
1.21 www 818: reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
1.12 www 819: $homsvr);
820: if (($roledef ne 'con_lost') && ($roledef ne '')) {
821: my ($syspriv,$dompriv,$coursepriv)=
1.21 www 822: split(/\_/,unescape($roledef));
1.50 www 823: $allroles{'cm./'}.=':'.$syspriv;
824: $allroles{$spec.'./'}.=':'.$syspriv;
1.12 www 825: if ($tdomain ne '') {
1.50 www 826: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
827: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
1.12 www 828: if ($trest ne '') {
1.50 www 829: $allroles{'cm.'.$area}.=':'.$coursepriv;
830: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
1.12 www 831: }
832: }
833: }
1.11 www 834: }
1.12 www 835: } else {
1.50 www 836: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
837: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
1.12 www 838: if ($tdomain ne '') {
1.50 www 839: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
840: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1.12 www 841: if ($trest ne '') {
1.50 www 842: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
843: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
1.12 www 844: }
845: }
1.11 www 846: }
1.12 www 847: }
848: }
1.11 www 849: } split(/&/,$rolesdump);
850: map {
851: %thesepriv=();
852: map {
853: if ($_ ne '') {
1.103 harris41 854: my ($privilege,$restrictions)=split(/&/,$_);
1.11 www 855: if ($restrictions eq '') {
1.103 harris41 856: $thesepriv{$privilege}='F';
1.11 www 857: } else {
1.103 harris41 858: if ($thesepriv{$privilege} ne 'F') {
859: $thesepriv{$privilege}.=$restrictions;
1.11 www 860: }
861: }
862: }
863: } split(/:/,$allroles{$_});
864: $thesestr='';
865: map { $thesestr.=':'.$_.'&'.$thesepriv{$_}; } keys %thesepriv;
866: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
867: } keys %allroles;
868: }
869: return $userroles;
870: }
871:
1.12 www 872: # --------------------------------------------------------------- get interface
873:
874: sub get {
875: my ($namespace,@storearr)=@_;
876: my $items='';
877: map {
878: $items.=escape($_).'&';
879: } @storearr;
880: $items=~s/\&$//;
881: my $rep=reply("get:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
882: $ENV{'user.home'});
1.15 www 883: my @pairs=split(/\&/,$rep);
884: my %returnhash=();
1.42 www 885: my $i=0;
1.15 www 886: map {
1.42 www 887: $returnhash{$_}=unescape($pairs[$i]);
888: $i++;
889: } @storearr;
1.15 www 890: return %returnhash;
1.27 www 891: }
892:
893: # --------------------------------------------------------------- del interface
894:
895: sub del {
896: my ($namespace,@storearr)=@_;
897: my $items='';
898: map {
899: $items.=escape($_).'&';
900: } @storearr;
901: $items=~s/\&$//;
902: return reply("del:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
903: $ENV{'user.home'});
1.15 www 904: }
905:
906: # -------------------------------------------------------------- dump interface
907:
908: sub dump {
909: my $namespace=shift;
910: my $rep=reply("dump:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace",
911: $ENV{'user.home'});
1.12 www 912: my @pairs=split(/\&/,$rep);
913: my %returnhash=();
914: map {
915: my ($key,$value)=split(/=/,$_);
1.29 www 916: $returnhash{unescape($key)}=unescape($value);
1.12 www 917: } @pairs;
918: return %returnhash;
919: }
920:
921: # --------------------------------------------------------------- put interface
922:
923: sub put {
924: my ($namespace,%storehash)=@_;
925: my $items='';
926: map {
927: $items.=escape($_).'='.escape($storehash{$_}).'&';
928: } keys %storehash;
929: $items=~s/\&$//;
930: return reply("put:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
1.47 www 931: $ENV{'user.home'});
932: }
933:
934: # ------------------------------------------------------ critical put interface
935:
936: sub cput {
937: my ($namespace,%storehash)=@_;
938: my $items='';
939: map {
940: $items.=escape($_).'='.escape($storehash{$_}).'&';
941: } keys %storehash;
942: $items=~s/\&$//;
943: return critical
944: ("put:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
1.12 www 945: $ENV{'user.home'});
946: }
947:
948: # -------------------------------------------------------------- eget interface
949:
950: sub eget {
951: my ($namespace,@storearr)=@_;
952: my $items='';
953: map {
954: $items.=escape($_).'&';
955: } @storearr;
956: $items=~s/\&$//;
957: my $rep=reply("eget:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
958: $ENV{'user.home'});
959: my @pairs=split(/\&/,$rep);
960: my %returnhash=();
1.42 www 961: my $i=0;
1.12 www 962: map {
1.42 www 963: $returnhash{$_}=unescape($pairs[$i]);
964: $i++;
965: } @storearr;
1.12 www 966: return %returnhash;
967: }
968:
1.103 harris41 969: # ------------------------------------------------- Check for a user privilege
1.12 www 970:
971: sub allowed {
972: my ($priv,$uri)=@_;
1.52 www 973: $uri=&declutter($uri);
1.29 www 974:
1.54 www 975: # Free bre access to adm and meta resources
1.29 www 976:
1.54 www 977: if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 978: return 'F';
979: }
1.29 www 980:
1.52 www 981: my $thisallowed='';
982: my $statecond=0;
983: my $courseprivid='';
984:
985: # Course
986:
987: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/$priv\&([^\:]*)/) {
988: $thisallowed.=$1;
989: }
1.29 www 990:
1.52 www 991: # Domain
992:
993: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
994: =~/$priv\&([^\:]*)/) {
1.12 www 995: $thisallowed.=$1;
996: }
1.52 www 997:
998: # Course: uri itself is a course
1.66 www 999: my $courseuri=$uri;
1000: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 1001: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 1002:
1.83 www 1003: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.52 www 1004: =~/$priv\&([^\:]*)/) {
1.12 www 1005: $thisallowed.=$1;
1006: }
1.29 www 1007:
1.52 www 1008: # Full access at system, domain or course-wide level? Exit.
1.29 www 1009:
1010: if ($thisallowed=~/F/) {
1011: return 'F';
1012: }
1013:
1.52 www 1014: # If this is generating or modifying users, exit with special codes
1.29 www 1015:
1.52 www 1016: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:'=~/\:$priv\:/) {
1017: return $thisallowed;
1018: }
1019: #
1.103 harris41 1020: # Gathered so far: system, domain and course wide privileges
1.52 www 1021: #
1022: # Course: See if uri or referer is an individual resource that is part of
1023: # the course
1024:
1025: if ($ENV{'request.course.id'}) {
1026: $courseprivid=$ENV{'request.course.id'};
1027: if ($ENV{'request.course.sec'}) {
1028: $courseprivid.='/'.$ENV{'request.course.sec'};
1029: }
1030: $courseprivid=~s/\_/\//;
1031: my $checkreferer=1;
1032: my @uriparts=split(/\//,$uri);
1033: my $filename=$uriparts[$#uriparts];
1034: my $pathname=$uri;
1035: $pathname=~s/\/$filename$//;
1036: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.54 www 1037: /\&$filename\:([\d\|]+)\&/) {
1.52 www 1038: $statecond=$1;
1039: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1040: =~/$priv\&([^\:]*)/) {
1041: $thisallowed.=$1;
1042: $checkreferer=0;
1043: }
1.29 www 1044: }
1.83 www 1045:
1.52 www 1046: if (($ENV{'HTTP_REFERER'}) && ($checkreferer)) {
1.55 www 1047: my $refuri=$ENV{'HTTP_REFERER'};
1048: $refuri=~s/^http\:\/\/$ENV{'request.host'}//i;
1049: $refuri=&declutter($refuri);
1.53 www 1050: my @uriparts=split(/\//,$refuri);
1.52 www 1051: my $filename=$uriparts[$#uriparts];
1.53 www 1052: my $pathname=$refuri;
1.52 www 1053: $pathname=~s/\/$filename$//;
1.55 www 1054: my @filenameparts=split(/\./,$uri);
1.53 www 1055: if (&fileembstyle($filenameparts[$#filenameparts]) ne 'ssi') {
1056: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.54 www 1057: /\&$filename\:([\d\|]+)\&/) {
1.53 www 1058: my $refstatecond=$1;
1.52 www 1059: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1060: =~/$priv\&([^\:]*)/) {
1061: $thisallowed.=$1;
1.53 www 1062: $uri=$refuri;
1063: $statecond=$refstatecond;
1.52 www 1064: }
1.53 www 1065: }
1.52 www 1066: }
1.29 www 1067: }
1.52 www 1068: }
1.29 www 1069:
1.52 www 1070: #
1.103 harris41 1071: # Gathered now: all privileges that could apply, and condition number
1.52 www 1072: #
1073: #
1074: # Full or no access?
1075: #
1.29 www 1076:
1.52 www 1077: if ($thisallowed=~/F/) {
1078: return 'F';
1079: }
1.29 www 1080:
1.52 www 1081: unless ($thisallowed) {
1082: return '';
1083: }
1.29 www 1084:
1.52 www 1085: # Restrictions exist, deal with them
1086: #
1087: # C:according to course preferences
1088: # R:according to resource settings
1089: # L:unless locked
1090: # X:according to user session state
1091: #
1092:
1093: # Possibly locked functionality, check all courses
1.54 www 1094: # Locks might take effect only after 10 minutes cache expiration for other
1095: # courses, and 2 minutes for current course
1.52 www 1096:
1097: my $envkey;
1098: if ($thisallowed=~/L/) {
1099: foreach $envkey (keys %ENV) {
1.54 www 1100: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
1101: my $courseid=$2;
1102: my $roleid=$1.'.'.$2;
1.92 www 1103: $courseid=~s/^\///;
1.54 www 1104: my $expiretime=600;
1105: if ($ENV{'request.role'} eq $roleid) {
1106: $expiretime=120;
1107: }
1108: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
1109: my $prefix='course.'.$cdom.'_'.$cnum.'.';
1110: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
1111: &coursedescription($courseid);
1112: }
1113: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,$csec\,/)
1114: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
1115: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 1116: &log($ENV{'user.domain'},$ENV{'user.name'},
1117: $ENV{'user.host'},
1118: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 1119: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1120: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1121: return '';
1122: }
1123: }
1.54 www 1124: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/)
1125: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
1126: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 1127: &log($ENV{'user.domain'},$ENV{'user.name'},
1128: $ENV{'user.host'},
1129: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 1130: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1131: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1132: return '';
1133: }
1134: }
1135: }
1.29 www 1136: }
1.52 www 1137: }
1138:
1139: #
1140: # Rest of the restrictions depend on selected course
1141: #
1142:
1143: unless ($ENV{'request.course.id'}) {
1144: return '1';
1145: }
1.29 www 1146:
1.52 www 1147: #
1148: # Now user is definitely in a course
1149: #
1.53 www 1150:
1151:
1152: # Course preferences
1153:
1154: if ($thisallowed=~/C/) {
1.54 www 1155: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1156: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1157: =~/\,$rolecode\,/) {
1.57 www 1158: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1159: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.54 www 1160: $ENV{'request.course.id'});
1161: return '';
1162: }
1.53 www 1163: }
1164:
1165: # Resource preferences
1166:
1167: if ($thisallowed=~/R/) {
1.54 www 1168: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1169: my $filename=$perlvar{'lonDocRoot'}.'/res/'.$uri.'.meta';
1170: if (-e $filename) {
1171: my @content;
1172: {
1173: my $fh=Apache::File->new($filename);
1174: @content=<$fh>;
1175: }
1176: if (join('',@content)=~
1177: /\<roledeny[^\>]*\>[^\<]*$rolecode[^\<]*\<\/roledeny\>/) {
1.57 www 1178: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1179: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.54 www 1180: return '';
1181:
1182: }
1183: }
1.53 www 1184: }
1.30 www 1185:
1.52 www 1186: # Restricted by state?
1.30 www 1187:
1.52 www 1188: if ($thisallowed=~/X/) {
1189: if (&condval($statecond)) {
1190: return '2';
1191: } else {
1192: return '';
1193: }
1194: }
1.30 www 1195:
1.52 www 1196: return 'F';
1.12 www 1197: }
1198:
1199: # ----------------------------------------------------------------- Define Role
1200:
1201: sub definerole {
1202: if (allowed('mcr','/')) {
1203: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.21 www 1204: map {
1205: my ($crole,$cqual)=split(/\&/,$_);
1206: if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
1207: if ($pr{'cr:s'}=~/$crole\&/) {
1208: if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
1209: return "refused:s:$crole&$cqual";
1210: }
1211: }
1212: } split('/',$sysrole);
1213: map {
1214: my ($crole,$cqual)=split(/\&/,$_);
1215: if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
1216: if ($pr{'cr:d'}=~/$crole\&/) {
1217: if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
1218: return "refused:d:$crole&$cqual";
1219: }
1220: }
1221: } split('/',$domrole);
1222: map {
1223: my ($crole,$cqual)=split(/\&/,$_);
1224: if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
1225: if ($pr{'cr:c'}=~/$crole\&/) {
1226: if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
1227: return "refused:c:$crole&$cqual";
1228: }
1229: }
1230: } split('/',$courole);
1.12 www 1231: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1232: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 1233: "rolesdef_$rolename=".
1234: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 1235: return reply($command,$ENV{'user.home'});
1236: } else {
1237: return 'refused';
1238: }
1.105 harris41 1239: }
1240:
1241: # ---------------- Make a metadata query against the network of library servers
1242:
1243: sub metadata_query {
1244: my ($query)=@_;
1.107 harris41 1245: my $reply=&reply("querysend:".&escape($query),'msul3');
1.12 www 1246: }
1247:
1248: # ------------------------------------------------------------------ Plain Text
1249:
1250: sub plaintext {
1.22 www 1251: my $short=shift;
1252: return $prp{$short};
1.12 www 1253: }
1254:
1.25 www 1255: # ------------------------------------------------------------------ Plain Text
1256:
1257: sub fileembstyle {
1258: my $ending=shift;
1259: return $fe{$ending};
1260: }
1261:
1262: # ------------------------------------------------------------ Description Text
1263:
1.74 www 1264: sub filedescription {
1.25 www 1265: my $ending=shift;
1266: return $fd{$ending};
1267: }
1268:
1.12 www 1269: # ----------------------------------------------------------------- Assign Role
1270:
1271: sub assignrole {
1.21 www 1272: my ($udom,$uname,$url,$role,$end,$start)=@_;
1273: my $mrole;
1274: if ($role =~ /^cr\//) {
1.104 www 1275: unless (&allowed('ccr',$url)) {
1276: &logthis('Refused custom assignrole: '.
1277: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1278: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1279: return 'refused';
1280: }
1.21 www 1281: $mrole='cr';
1282: } else {
1.82 www 1283: my $cwosec=$url;
1.83 www 1284: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.104 www 1285: unless (&allowed('c'.$role,$cwosec)) {
1286: &logthis('Refused assignrole: '.
1287: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1288: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1289: return 'refused';
1290: }
1.21 www 1291: $mrole=$role;
1292: }
1293: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1294: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 1295: if ($end) { $command.='_'.$end; }
1.21 www 1296: if ($start) {
1297: if ($end) {
1.81 www 1298: $command.='_'.$start;
1.21 www 1299: } else {
1.81 www 1300: $command.='_0_'.$start;
1.21 www 1301: }
1302: }
1303: return &reply($command,&homeserver($uname,$udom));
1.80 www 1304: }
1305:
1.81 www 1306: # --------------------------------------------------------------- Modify a user
1.80 www 1307:
1308:
1.81 www 1309: sub modifyuser {
1.80 www 1310: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene)=@_;
1.81 www 1311: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1312: $umode.', '.$first.', '.$middle.', '.
1313: $last.', '.$gene.' by '.
1314: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1315: my $uhome=&homeserver($uname,$udom);
1316: # ----------------------------------------------------------------- Create User
1.81 www 1317: if (($uhome eq 'no_host') && ($umode) && ($upass)) {
1.80 www 1318: my $unhome='';
1319: if ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1320: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1321: } else {
1322: my $tryserver;
1.81 www 1323: my $loadm=10000000;
1.80 www 1324: foreach $tryserver (keys %libserv) {
1325: if ($hostdom{$tryserver} eq $udom) {
1326: my $answer=reply('load',$tryserver);
1327: if (($answer=~/\d+/) && ($answer<$loadm)) {
1328: $loadm=$answer;
1329: $unhome=$tryserver;
1330: }
1331: }
1332: }
1333: }
1334: if (($unhome eq '') || ($unhome eq 'no_host')) {
1335: return 'error: find home';
1336: }
1337: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
1338: &escape($upass),$unhome);
1339: unless ($reply eq 'ok') {
1340: return 'error: '.$reply;
1341: }
1342: $uhome=&homeserver($uname,$udom);
1343: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1344: return 'error: verify home';
1345: }
1346: }
1347: # ---------------------------------------------------------------------- Add ID
1348: if ($uid) {
1349: $uid=~tr/A-Z/a-z/;
1350: my %uidhash=&idrget($udom,$uname);
1351: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)) {
1352: unless ($uid eq $uidhash{$uname}) {
1353: return 'error: mismatch '.$uidhash{$uname}.' versus '.$uid;
1354: }
1355: } else {
1356: &idput($udom,($uname => $uid));
1357: }
1358: }
1359: # -------------------------------------------------------------- Add names, etc
1360: my $names=&reply('get:'.$udom.':'.$uname.
1361: ':environment:firstname&middlename&lastname&generation',
1362: $uhome);
1363: my ($efirst,$emiddle,$elast,$egene)=split(/\&/,$names);
1.81 www 1364: if ($first) { $efirst = &escape($first); }
1365: if ($middle) { $emiddle = &escape($middle); }
1366: if ($last) { $elast = &escape($last); }
1367: if ($gene) { $egene = &escape($gene); }
1.80 www 1368: my $reply=&reply('put:'.$udom.':'.$uname.
1369: ':environment:firstname='.$efirst.
1370: '&middlename='.$emiddle.
1371: '&lastname='.$elast.
1372: '&generation='.$egene,$uhome);
1373: if ($reply ne 'ok') {
1374: return 'error: '.$reply;
1375: }
1.81 www 1376: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1377: $umode.', '.$first.', '.$middle.', '.
1378: $last.', '.$gene.' by '.
1379: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1380: return 'ok';
1381: }
1382:
1.81 www 1383: # -------------------------------------------------------------- Modify student
1.80 www 1384:
1.81 www 1385: sub modifystudent {
1386: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1387: $end,$start)=@_;
1388: my $cid='';
1389: unless ($cid=$ENV{'request.course.id'}) {
1.80 www 1390: return 'not_in_class';
1391: }
1392: # --------------------------------------------------------------- Make the user
1.81 www 1393: my $reply=&modifyuser
1.80 www 1394: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene);
1395: unless ($reply eq 'ok') { return $reply; }
1.81 www 1396: my $uhome=&homeserver($uname,$udom);
1397: if (($uhome eq '') || ($uhome eq 'no_host')) {
1398: return 'error: no such user';
1399: }
1.80 www 1400: # -------------------------------------------------- Add student to course list
1.81 www 1401: my $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1402: $ENV{'course.'.$cid.'.num'}.':classlist:'.
1403: &escape($uname.':'.$udom).'='.
1404: &escape($end.':'.$start),
1405: $ENV{'course.'.$cid.'.home'});
1406: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
1407: return 'error: '.$reply;
1408: }
1.80 www 1409: # ---------------------------------------------------- Add student role to user
1.83 www 1410: my $uurl='/'.$cid;
1.81 www 1411: $uurl=~s/\_/\//g;
1412: if ($usec) {
1413: $uurl.='/'.$usec;
1414: }
1415: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 1416: }
1417:
1.84 www 1418: # ------------------------------------------------- Write to course preferences
1419:
1420: sub writecoursepref {
1421: my ($courseid,%prefs)=@_;
1422: $courseid=~s/^\///;
1423: $courseid=~s/\_/\//g;
1424: my ($cdomain,$cnum)=split(/\//,$courseid);
1425: my $chome=homeserver($cnum,$cdomain);
1426: if (($chome eq '') || ($chome eq 'no_host')) {
1427: return 'error: no such course';
1428: }
1429: my $cstring='';
1430: map {
1431: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1432: } keys %prefs;
1433: $cstring=~s/\&$//;
1434: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
1435: }
1436:
1437: # ---------------------------------------------------------- Make/modify course
1438:
1439: sub createcourse {
1440: my ($udom,$description,$url)=@_;
1441: $url=&declutter($url);
1442: my $cid='';
1443: unless (&allowed('ccc',$ENV{'user.domain'})) {
1444: return 'refused';
1445: }
1446: unless ($udom eq $ENV{'user.domain'}) {
1447: return 'refused';
1448: }
1449: # ------------------------------------------------------------------- Create ID
1450: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1451: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1452: # ----------------------------------------------- Make sure that does not exist
1453: my $uhome=&homeserver($uname,$udom);
1454: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1455: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1456: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1457: $uhome=&homeserver($uname,$udom);
1458: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1459: return 'error: unable to generate unique course-ID';
1460: }
1461: }
1462: # ------------------------------------------------------------- Make the course
1463: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1464: $ENV{'user.home'});
1465: unless ($reply eq 'ok') { return 'error: '.$reply; }
1466: my $uhome=&homeserver($uname,$udom);
1467: if (($uhome eq '') || ($uhome eq 'no_host')) {
1468: return 'error: no such course';
1469: }
1470: &writecoursepref($udom.'_'.$uname,
1471: ('description' => $description,
1472: 'url' => $url));
1473: return '/'.$udom.'/'.$uname;
1474: }
1475:
1.21 www 1476: # ---------------------------------------------------------- Assign Custom Role
1477:
1478: sub assigncustomrole {
1479: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
1480: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1481: $end,$start);
1482: }
1483:
1484: # ----------------------------------------------------------------- Revoke Role
1485:
1486: sub revokerole {
1487: my ($udom,$uname,$url,$role)=@_;
1488: my $now=time;
1489: return &assignrole($udom,$uname,$url,$role,$now);
1490: }
1491:
1492: # ---------------------------------------------------------- Revoke Custom Role
1493:
1494: sub revokecustomrole {
1495: my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
1496: my $now=time;
1497: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
1.17 www 1498: }
1499:
1500: # ------------------------------------------------------------ Directory lister
1501:
1502: sub dirlist {
1503: my $uri=shift;
1.18 www 1504: $uri=~s/^\///;
1505: $uri=~s/\/$//;
1.19 www 1506: my ($res,$udom,$uname,@rest)=split(/\//,$uri);
1507: if ($udom) {
1508: if ($uname) {
1509: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
1510: homeserver($uname,$udom));
1511: return split(/:/,$listing);
1512: } else {
1513: my $tryserver;
1514: my %allusers=();
1515: foreach $tryserver (keys %libserv) {
1516: if ($hostdom{$tryserver} eq $udom) {
1517: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
1518: $tryserver);
1519: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
1520: && ($listing ne 'con_lost')) {
1521: map {
1522: my ($entry,@stat)=split(/&/,$_);
1523: $allusers{$entry}=1;
1524: } split(/:/,$listing);
1525: }
1526: }
1527: }
1528: my $alluserstr='';
1529: map {
1530: $alluserstr.=$_.'&user:';
1531: } sort keys %allusers;
1532: $alluserstr=~s/:$//;
1533: return split(/:/,$alluserstr);
1534: }
1535: } else {
1536: my $tryserver;
1537: my %alldom=();
1538: foreach $tryserver (keys %libserv) {
1539: $alldom{$hostdom{$tryserver}}=1;
1540: }
1541: my $alldomstr='';
1542: map {
1543: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
1544: } sort keys %alldom;
1545: $alldomstr=~s/:$//;
1546: return split(/:/,$alldomstr);
1547: }
1.26 www 1548: }
1549:
1550: # -------------------------------------------------------- Value of a Condition
1551:
1.40 www 1552: sub directcondval {
1553: my $number=shift;
1554: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
1555: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
1556: } else {
1557: return 2;
1558: }
1559: }
1560:
1.26 www 1561: sub condval {
1562: my $condidx=shift;
1563: my $result=0;
1.54 www 1564: my $allpathcond='';
1565: map {
1566: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
1567: $allpathcond.=
1568: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
1569: }
1570: } split(/\|/,$condidx);
1571: $allpathcond=~s/\|$//;
1.33 www 1572: if ($ENV{'request.course.id'}) {
1.54 www 1573: if ($allpathcond) {
1.26 www 1574: my $operand='|';
1575: my @stack;
1576: map {
1577: if ($_ eq '(') {
1578: push @stack,($operand,$result)
1579: } elsif ($_ eq ')') {
1580: my $before=pop @stack;
1581: if (pop @stack eq '&') {
1582: $result=$result>$before?$before:$result;
1583: } else {
1584: $result=$result>$before?$result:$before;
1585: }
1586: } elsif (($_ eq '&') || ($_ eq '|')) {
1587: $operand=$_;
1588: } else {
1.40 www 1589: my $new=directcondval($_);
1.26 www 1590: if ($operand eq '&') {
1591: $result=$result>$new?$new:$result;
1592: } else {
1593: $result=$result>$new?$result:$new;
1594: }
1595: }
1.54 www 1596: } ($allpathcond=~/(\d+|\(|\)|\&|\|)/g);
1.26 www 1597: }
1598: }
1599: return $result;
1.28 www 1600: }
1601:
1602: # --------------------------------------------------------- Value of a Variable
1603:
1.58 www 1604: sub EXT {
1.102 www 1605: my $varname=shift;
1.68 www 1606: unless ($varname) { return ''; }
1.48 www 1607: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
1608: my $rest;
1609: if ($therest[0]) {
1610: $rest=join('.',@therest);
1611: } else {
1612: $rest='';
1613: }
1.57 www 1614: my $qualifierrest=$qualifier;
1615: if ($rest) { $qualifierrest.='.'.$rest; }
1616: my $spacequalifierrest=$space;
1617: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 1618: if ($realm eq 'user') {
1.48 www 1619: # --------------------------------------------------------------- user.resource
1620: if ($space eq 'resource') {
1.57 www 1621: my %restored=&restore;
1622: return $restored{$qualifierrest};
1.48 www 1623: # ----------------------------------------------------------------- user.access
1624: } elsif ($space eq 'access') {
1625: return &allowed($qualifier,$rest);
1626: # ------------------------------------------ user.preferences, user.environment
1627: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.57 www 1628: return $ENV{join('.',('environment',$qualifierrest))};
1.48 www 1629: # ----------------------------------------------------------------- user.course
1630: } elsif ($space eq 'course') {
1631: return $ENV{join('.',('request.course',$qualifier))};
1632: # ------------------------------------------------------------------- user.role
1633: } elsif ($space eq 'role') {
1634: my ($role,$where)=split(/\./,$ENV{'request.role'});
1635: if ($qualifier eq 'value') {
1636: return $role;
1637: } elsif ($qualifier eq 'extent') {
1638: return $where;
1639: }
1640: # ----------------------------------------------------------------- user.domain
1641: } elsif ($space eq 'domain') {
1642: return $ENV{'user.domain'};
1643: # ------------------------------------------------------------------- user.name
1644: } elsif ($space eq 'name') {
1645: return $ENV{'user.name'};
1646: # ---------------------------------------------------- Any other user namespace
1.29 www 1647: } else {
1.48 www 1648: my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
1649: my %reply=&get($space,$item);
1650: return $reply{$item};
1651: }
1652: } elsif ($realm eq 'request') {
1653: # ------------------------------------------------------------- request.browser
1654: if ($space eq 'browser') {
1655: return $ENV{'browser.'.$qualifier};
1.57 www 1656: # ------------------------------------------------------------ request.filename
1657: } else {
1658: return $ENV{'request.'.$spacequalifierrest};
1.29 www 1659: }
1.28 www 1660: } elsif ($realm eq 'course') {
1.48 www 1661: # ---------------------------------------------------------- course.description
1.57 www 1662: my $section='';
1663: if ($ENV{'request.course.sec'}) {
1664: $section='_'.$ENV{'request.course.sec'};
1.48 www 1665: }
1.57 www 1666: return $ENV{'course.'.$ENV{'request.course.id'}.$section.'.'.
1667: $spacequalifierrest};
1668: } elsif ($realm eq 'resource') {
1.60 www 1669: if ($ENV{'request.course.id'}) {
1670: # ----------------------------------------------------- Cascading lookup scheme
1.102 www 1671: my $symbp=&symbread();
1.69 www 1672: my $mapp=(split(/\_\_\_/,$symbp))[0];
1673:
1674: my $symbparm=$symbp.'.'.$spacequalifierrest;
1675: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
1676:
1.60 www 1677: my $seclevel=
1.69 www 1678: $ENV{'request.course.id'}.'.['.
1679: $ENV{'request.course.sec'}.'].'.$spacequalifierrest;
1680: my $seclevelr=
1681: $ENV{'request.course.id'}.'.['.
1682: $ENV{'request.course.sec'}.'].'.$symbparm;
1683: my $seclevelm=
1684: $ENV{'request.course.id'}.'.['.
1685: $ENV{'request.course.sec'}.'].'.$mapparm;
1686:
1.60 www 1687: my $courselevel=
1688: $ENV{'request.course.id'}.'.'.$spacequalifierrest;
1.69 www 1689: my $courselevelr=
1690: $ENV{'request.course.id'}.'.'.$symbparm;
1691: my $courselevelm=
1692: $ENV{'request.course.id'}.'.'.$mapparm;
1693:
1.60 www 1694: # ----------------------------------------------------------- first, check user
1.69 www 1695: my %resourcedata=get('resourcedata',
1696: ($courselevelr,$courselevelm,$courselevel));
1.94 www 1697: if (($resourcedata{$courselevelr}!~/^error\:/) &&
1698: ($resourcedata{$courselevelr}!~/^con_lost/)) {
1.69 www 1699:
1700: if ($resourcedata{$courselevelr}) {
1701: return $resourcedata{$courselevelr}; }
1702: if ($resourcedata{$courselevelm}) {
1703: return $resourcedata{$courselevelm}; }
1.60 www 1704: if ($resourcedata{$courselevel}) { return $resourcedata{$courselevel}; }
1.69 www 1705:
1.94 www 1706: } else {
1707: if ($resourcedata{$courselevelr}!~/No such file/) {
1708: &logthis("<font color=blue>WARNING:".
1709: " Trying to get resource data for ".$ENV{'user.name'}." at "
1710: .$ENV{'user.domain'}.": ".$resourcedata{$courselevelr}.
1711: "</font>");
1712: }
1.63 www 1713: }
1.95 www 1714:
1.60 www 1715: # -------------------------------------------------------- second, check course
1.96 www 1716:
1.60 www 1717: my $reply=&reply('get:'.
1.96 www 1718: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.':'.
1719: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
1.79 www 1720: ':resourcedata:'.
1721: &escape($seclevelr).'&'.&escape($seclevelm).'&'.&escape($seclevel).'&'.
1722: &escape($courselevelr).'&'.&escape($courselevelm).'&'.&escape($courselevel),
1.96 www 1723: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
1.63 www 1724: if ($reply!~/^error\:/) {
1.79 www 1725: map {
1726: if ($_) { return &unescape($_); }
1727: } split(/\&/,$reply);
1.63 www 1728: }
1.94 www 1729: if (($reply=~/^con_lost/) || ($reply=~/^error\:/)) {
1730: &logthis("<font color=blue>WARNING:".
1.95 www 1731: " Getting ".$reply." asking for ".$varname." for ".
1.96 www 1732: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
1.95 www 1733: ' at '.
1.96 www 1734: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.
1.95 www 1735: ' from '.
1.96 www 1736: $ENV{'course.'.$ENV{'request.course.id'}.'.home'}.
1.94 www 1737: "</font>");
1738: }
1.60 www 1739: # ------------------------------------------------------ third, check map parms
1.65 www 1740: my %parmhash=();
1741: my $thisparm='';
1742: if (tie(%parmhash,'GDBM_File',
1743: $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER,0640)) {
1744: $thisparm=$parmhash{$symbparm};
1745: untie(%parmhash);
1.60 www 1746: }
1.65 www 1747: if ($thisparm) { return $thisparm; }
1.60 www 1748: }
1749:
1750: # --------------------------------------------- last, look in resource metadata
1.71 www 1751:
1.78 www 1752: $spacequalifierrest=~s/\./\_/;
1.71 www 1753: my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest);
1754: if ($metadata) { return $metadata; }
1.78 www 1755: $metadata=&metadata($ENV{'request.filename'},
1756: 'parameter_'.$spacequalifierrest);
1757: if ($metadata) { return $metadata; }
1.71 www 1758:
1.48 www 1759: # ---------------------------------------------------- Any other user namespace
1760: } elsif ($realm eq 'environment') {
1761: # ----------------------------------------------------------------- environment
1.57 www 1762: return $ENV{$spacequalifierrest};
1.28 www 1763: } elsif ($realm eq 'system') {
1.48 www 1764: # ----------------------------------------------------------------- system.time
1765: if ($space eq 'time') {
1766: return time;
1767: }
1.28 www 1768: }
1.48 www 1769: return '';
1.61 www 1770: }
1771:
1.71 www 1772: # ---------------------------------------------------------------- Get metadata
1773:
1774: sub metadata {
1775: my ($uri,$what)=@_;
1.78 www 1776:
1.71 www 1777: $uri=&declutter($uri);
1.73 www 1778: my $filename=$uri;
1779: $uri=~s/\.meta$//;
1.71 www 1780: unless ($metacache{$uri.':keys'}) {
1.73 www 1781: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
1782: my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
1.71 www 1783: my $parser=HTML::TokeParser->new(\$metastring);
1784: my $token;
1785: while ($token=$parser->get_token) {
1786: if ($token->[0] eq 'S') {
1787: my $entry=$token->[1];
1788: my $unikey=$entry;
1.72 www 1789: if (defined($token->[2]->{'part'})) {
1.71 www 1790: $unikey.='_'.$token->[2]->{'part'};
1791: }
1.72 www 1792: if (defined($token->[2]->{'name'})) {
1.71 www 1793: $unikey.='_'.$token->[2]->{'name'};
1794: }
1795: if ($metacache{$uri.':keys'}) {
1796: $metacache{$uri.':keys'}.=','.$unikey;
1797: } else {
1798: $metacache{$uri.':keys'}=$unikey;
1799: }
1800: map {
1801: $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.72 www 1802: } @{$token->[3]};
1.78 www 1803: unless (
1804: $metacache{$uri.':'.$unikey}=$parser->get_text('/'.$entry)
1805: ) { $metacache{$uri.':'.$unikey}=
1806: $metacache{$uri.':'.$unikey.'.default'};
1807: }
1.71 www 1808: }
1809: }
1810: }
1811: return $metacache{$uri.':'.$what};
1812: }
1813:
1.31 www 1814: # ------------------------------------------------- Update symbolic store links
1815:
1816: sub symblist {
1817: my ($mapname,%newhash)=@_;
1818: $mapname=declutter($mapname);
1819: my %hash;
1820: if (($ENV{'request.course.fn'}) && (%newhash)) {
1821: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1822: &GDBM_WRCREAT,0640)) {
1823: map {
1824: $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
1825: } keys %newhash;
1826: if (untie(%hash)) {
1827: return 'ok';
1828: }
1829: }
1830: }
1831: return 'error';
1832: }
1833:
1834: # ------------------------------------------------------ Return symb list entry
1835:
1836: sub symbread {
1.44 www 1837: my $thisfn=shift;
1838: unless ($thisfn) {
1839: $thisfn=$ENV{'request.filename'};
1840: }
1841: $thisfn=declutter($thisfn);
1.31 www 1842: my %hash;
1.37 www 1843: my %bighash;
1844: my $syval='';
1.45 www 1845: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.31 www 1846: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1847: &GDBM_READER,0640)) {
1848: $syval=$hash{$thisfn};
1.37 www 1849: untie(%hash);
1850: }
1851: # ---------------------------------------------------------- There was an entry
1852: if ($syval) {
1853: unless ($syval=~/\_\d+$/) {
1854: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.44 www 1855: &appenv('request.ambiguous' => $thisfn);
1.37 www 1856: return '';
1857: }
1858: $syval.=$1;
1859: }
1860: } else {
1861: # ------------------------------------------------------- Was not in symb table
1862: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1863: &GDBM_READER,0640)) {
1864: # ---------------------------------------------- Get ID(s) for current resource
1865: my $ids=$bighash{'ids_/res/'.$thisfn};
1.65 www 1866: unless ($ids) {
1867: $ids=$bighash{'ids_/'.$thisfn};
1868: }
1.37 www 1869: if ($ids) {
1870: # ------------------------------------------------------------------- Has ID(s)
1871: my @possibilities=split(/\,/,$ids);
1.39 www 1872: if ($#possibilities==0) {
1873: # ----------------------------------------------- There is only one possibility
1.37 www 1874: my ($mapid,$resid)=split(/\./,$ids);
1875: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
1876: } else {
1.39 www 1877: # ------------------------------------------ There is more than one possibility
1878: my $realpossible=0;
1879: map {
1880: my $file=$bighash{'src_'.$_};
1881: if (&allowed('bre',$file)) {
1882: my ($mapid,$resid)=split(/\./,$_);
1883: if ($bighash{'map_type_'.$mapid} ne 'page') {
1884: $realpossible++;
1885: $syval=declutter($bighash{'map_id_'.$mapid}).
1886: '___'.$resid;
1887: }
1888: }
1889: } @possibilities;
1890: if ($realpossible!=1) { $syval=''; }
1.37 www 1891: }
1892: }
1893: untie(%bighash)
1894: }
1.31 www 1895: }
1.62 www 1896: if ($syval) {
1897: return $syval.'___'.$thisfn;
1898: }
1.31 www 1899: }
1.44 www 1900: &appenv('request.ambiguous' => $thisfn);
1.31 www 1901: return '';
1902: }
1903:
1904: # ---------------------------------------------------------- Return random seed
1905:
1.32 www 1906: sub numval {
1907: my $txt=shift;
1908: $txt=~tr/A-J/0-9/;
1909: $txt=~tr/a-j/0-9/;
1910: $txt=~tr/K-T/0-9/;
1911: $txt=~tr/k-t/0-9/;
1912: $txt=~tr/U-Z/0-5/;
1913: $txt=~tr/u-z/0-5/;
1914: $txt=~s/\D//g;
1915: return int($txt);
1916: }
1917:
1.31 www 1918: sub rndseed {
1919: my $symb;
1.44 www 1920: unless ($symb=&symbread()) { return time; }
1.98 albertel 1921: {
1922: use integer;
1923: my $symbchck=unpack("%32C*",$symb) << 27;
1.100 albertel 1924: my $symbseed=numval($symb) << 22;
1.98 albertel 1925: my $namechck=unpack("%32C*",$ENV{'user.name'}) << 17;
1.100 albertel 1926: my $nameseed=numval($ENV{'user.name'}) << 12;
1.98 albertel 1927: my $domainseed=unpack("%32C*",$ENV{'user.domain'}) << 7;
1928: my $courseseed=unpack("%32C*",$ENV{'request.course.id'});
1929: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
1.99 albertel 1930: #uncommenting these lines can break things!
1931: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
1932: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.98 albertel 1933: return $num;
1934: }
1.36 albertel 1935: }
1936:
1.76 www 1937: sub ireceipt {
1938: my ($funame,$fudom,$fucourseid,$fusymb)=@_;
1939: my $cuname=unpack("%32C*",$funame);
1940: my $cudom=unpack("%32C*",$fudom);
1941: my $cucourseid=unpack("%32C*",$fucourseid);
1942: my $cusymb=unpack("%32C*",$fusymb);
1.77 www 1943: my $cunique=unpack("%32C*",$perlvar{'lonReceipt'});
1.76 www 1944: return unpack("%32C*",$perlvar{'lonHostID'}).'-'.
1945: ($cunique%$cuname+
1946: $cunique%$cudom+
1947: $cusymb%$cuname+
1948: $cusymb%$cudom+
1949: $cucourseid%$cuname+
1950: $cucourseid%$cudom);
1951: }
1952:
1953: sub receipt {
1954: return &ireceipt($ENV{'user.name'},$ENV{'user.domain'},
1955: $ENV{'request.course.id'},&symbread());
1956: }
1957:
1.36 albertel 1958: # ------------------------------------------------------------ Serves up a file
1959: # returns either the contents of the file or a -1
1960: sub getfile {
1961: my $file=shift;
1.37 www 1962: &repcopy($file);
1.36 albertel 1963: if (! -e $file ) { return -1; };
1964: my $fh=Apache::File->new($file);
1965: my $a='';
1966: while (<$fh>) { $a .=$_; }
1967: return $a
1968: }
1969:
1970: sub filelocation {
1971: my ($dir,$file) = @_;
1972: my $location;
1973: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1.59 albertel 1974: if ($file=~m:^/~:) { # is a contruction space reference
1975: $location = $file;
1976: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.36 albertel 1977: } else {
1.59 albertel 1978: $file=~s/^$perlvar{'lonDocRoot'}//;
1979: $file=~s:^/*res::;
1980: if ( !( $file =~ m:^/:) ) {
1981: $location = $dir. '/'.$file;
1982: } else {
1983: $location = '/home/httpd/html/res'.$file;
1984: }
1.36 albertel 1985: }
1986: $location=~s://+:/:g; # remove duplicate /
1.46 www 1987: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
1988: return $location;
1989: }
1.36 albertel 1990:
1.46 www 1991: sub hreflocation {
1992: my ($dir,$file)=@_;
1993: unless (($_=~/^http:\/\//i) || ($_=~/^\//)) {
1994: my $finalpath=filelocation($dir,$file);
1995: $finalpath=~s/^\/home\/httpd\/html//;
1996: return $finalpath;
1997: } else {
1998: return $file;
1999: }
1.31 www 2000: }
2001:
2002: # ------------------------------------------------------------- Declutters URLs
2003:
2004: sub declutter {
2005: my $thisfn=shift;
2006: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
2007: $thisfn=~s/^\///;
2008: $thisfn=~s/^res\///;
2009: return $thisfn;
1.12 www 2010: }
2011:
2012: # -------------------------------------------------------- Escape Special Chars
2013:
2014: sub escape {
2015: my $str=shift;
2016: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
2017: return $str;
2018: }
2019:
2020: # ----------------------------------------------------- Un-Escape Special Chars
2021:
2022: sub unescape {
2023: my $str=shift;
2024: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2025: return $str;
2026: }
1.11 www 2027:
1.1 albertel 2028: # ================================================================ Main Program
2029:
2030: sub BEGIN {
2031: if ($readit ne 'done') {
2032: # ------------------------------------------------------------ Read access.conf
2033: {
2034: my $config=Apache::File->new("/etc/httpd/conf/access.conf");
2035:
2036: while (my $configline=<$config>) {
2037: if ($configline =~ /PerlSetVar/) {
2038: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 2039: chomp($varvalue);
1.1 albertel 2040: $perlvar{$varname}=$varvalue;
2041: }
2042: }
2043: }
2044:
2045: # ------------------------------------------------------------- Read hosts file
2046: {
2047: my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
2048:
2049: while (my $configline=<$config>) {
2050: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
2051: $hostname{$id}=$name;
2052: $hostdom{$id}=$domain;
2053: if ($role eq 'library') { $libserv{$id}=$name; }
2054: }
2055: }
2056:
2057: # ------------------------------------------------------ Read spare server file
2058: {
2059: my $config=Apache::File->new("$perlvar{'lonTabDir'}/spare.tab");
2060:
2061: while (my $configline=<$config>) {
2062: chomp($configline);
2063: if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
2064: $spareid{$configline}=1;
2065: }
2066: }
2067: }
1.11 www 2068: # ------------------------------------------------------------ Read permissions
2069: {
2070: my $config=Apache::File->new("$perlvar{'lonTabDir'}/roles.tab");
2071:
2072: while (my $configline=<$config>) {
2073: chomp($configline);
2074: my ($role,$perm)=split(/ /,$configline);
2075: if ($perm ne '') { $pr{$role}=$perm; }
2076: }
2077: }
2078:
2079: # -------------------------------------------- Read plain texts for permissions
2080: {
2081: my $config=Apache::File->new("$perlvar{'lonTabDir'}/rolesplain.tab");
2082:
2083: while (my $configline=<$config>) {
2084: chomp($configline);
2085: my ($short,$plain)=split(/:/,$configline);
2086: if ($plain ne '') { $prp{$short}=$plain; }
1.25 www 2087: }
2088: }
2089:
2090: # ------------------------------------------------------------- Read file types
2091: {
2092: my $config=Apache::File->new("$perlvar{'lonTabDir'}/filetypes.tab");
2093:
2094: while (my $configline=<$config>) {
2095: chomp($configline);
2096: my ($ending,$emb,@descr)=split(/\s+/,$configline);
2097: if ($descr[0] ne '') {
2098: $fe{$ending}=$emb;
2099: $fd{$ending}=join(' ',@descr);
2100: }
1.11 www 2101: }
2102: }
2103:
1.71 www 2104: %metacache=();
1.22 www 2105:
1.1 albertel 2106: $readit='done';
1.12 www 2107: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.1 albertel 2108: }
2109: }
2110: 1;
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