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