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