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: # store(hash) : stores hash permanently for this url
28: # cstore(hash) : critical store
29: # restore : returns hash for this url
30: # eget(namesp,array) : returns hash with keys from array filled in from namesp
31: # get(namesp,array) : returns hash with keys from array filled in from namesp
32: # del(namesp,array) : deletes keys out of array from namesp
33: # put(namesp,hash) : stores hash in namesp
34: # cput(namesp,hash) : critical put
35: # dump(namesp) : dumps the complete namespace into a hash
36: # ssi(url,hash) : does a complete request cycle on url to localhost, posts
37: # hash
38: # coursedescription(id) : returns and caches course description for id
39: # repcopy(filename) : replicate file
40: # dirlist(url) : gets a directory listing
41: # directcondval(index) : reading condition value of single condition from
42: # state string
43: # condval(index) : value of condition index based on state
44: # varval(name) : value of a variable
45: # refreshstate() : refresh the state information string
46: # symblist(map,hash) : Updates symbolic storage links
47: # symbread([filename]) : returns the data handle (filename optional)
48: # rndseed() : returns a random seed
49: # getfile(filename) : returns the contents of filename, or a -1 if it can't
50: # be found, replicates and subscribes to the file
51: # filelocation(dir,file) : returns a farily clean absolute reference to file
52: # from the directory dir
53: # hreflocation(dir,file) : same as filelocation, but for hrefs
54: # log(domain,user,home,msg) : write to permanent log for user
55: #
56: # 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
57: # 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
58: # 11/8,11/16,11/18,11/22,11/23,12/22,
59: # 01/06,01/13,02/24,02/28,02/29,
60: # 03/01,03/02,03/06,03/07,03/13,
61: # 04/05,05/29,05/31,06/01,
62: # 06/05,06/26 Gerd Kortemeyer
63: # 06/26 Ben Tyszka
64: # 06/30,07/15,07/17,07/18,07/20,07/21,07/22,07/25 Gerd Kortemeyer
65: # 08/14 Ben Tyszka
66: # 08/22,08/28,08/31,09/01,09/02,09/04,09/05,09/25,09/28,09/30 Gerd Kortemeyer
67: # 10/04 Gerd Kortemeyer
68: # 10/04 Guy Albertelli
69: # 10/06,10/09,10/10,10/11,10/14,10/20,10/23,10/25,10/26 Gerd Kortemeyer
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use Apache::File;
75: use LWP::UserAgent();
76: use HTTP::Headers;
77: use vars
78: qw(%perlvar %hostname %homecache %spareid %hostdom %libserv %pr %prp %fe %fd $readit);
79: use IO::Socket;
80: use GDBM_File;
81: use Apache::Constants qw(:common :http);
82:
83: # --------------------------------------------------------------------- Logging
84:
85: sub logthis {
86: my $message=shift;
87: my $execdir=$perlvar{'lonDaemons'};
88: my $now=time;
89: my $local=localtime($now);
90: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
91: print $fh "$local ($$): $message\n";
92: return 1;
93: }
94:
95: sub logperm {
96: my $message=shift;
97: my $execdir=$perlvar{'lonDaemons'};
98: my $now=time;
99: my $local=localtime($now);
100: my $fh=Apache::File->new(">>$execdir/logs/lonnet.perm.log");
101: print $fh "$now:$message:$local\n";
102: return 1;
103: }
104:
105: # -------------------------------------------------- Non-critical communication
106: sub subreply {
107: my ($cmd,$server)=@_;
108: my $peerfile="$perlvar{'lonSockDir'}/$server";
109: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
110: Type => SOCK_STREAM,
111: Timeout => 10)
112: or return "con_lost";
113: print $client "$cmd\n";
114: my $answer=<$client>;
115: if (!$answer) { $answer="con_lost"; }
116: chomp($answer);
117: return $answer;
118: }
119:
120: sub reply {
121: my ($cmd,$server)=@_;
122: my $answer=subreply($cmd,$server);
123: if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
124: if (($answer=~/^error:/) || ($answer=~/^refused/) ||
125: ($answer=~/^rejected/)) {
126: &logthis("<font color=blue>WARNING:".
127: " $cmd to $server returned $answer</font>");
128: }
129: return $answer;
130: }
131:
132: # ----------------------------------------------------------- Send USR1 to lonc
133:
134: sub reconlonc {
135: my $peerfile=shift;
136: &logthis("Trying to reconnect for $peerfile");
137: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
138: if (my $fh=Apache::File->new("$loncfile")) {
139: my $loncpid=<$fh>;
140: chomp($loncpid);
141: if (kill 0 => $loncpid) {
142: &logthis("lonc at pid $loncpid responding, sending USR1");
143: kill USR1 => $loncpid;
144: sleep 1;
145: if (-e "$peerfile") { return; }
146: &logthis("$peerfile still not there, give it another try");
147: sleep 5;
148: if (-e "$peerfile") { return; }
149: &logthis(
150: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
151: } else {
152: &logthis(
153: "<font color=blue>WARNING:".
154: " lonc at pid $loncpid not responding, giving up</font>");
155: }
156: } else {
157: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
158: }
159: }
160:
161: # ------------------------------------------------------ Critical communication
162:
163: sub critical {
164: my ($cmd,$server)=@_;
165: my $answer=reply($cmd,$server);
166: if ($answer eq 'con_lost') {
167: my $pingreply=reply('ping',$server);
168: &reconlonc("$perlvar{'lonSockDir'}/$server");
169: my $pongreply=reply('pong',$server);
170: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
171: $answer=reply($cmd,$server);
172: if ($answer eq 'con_lost') {
173: my $now=time;
174: my $middlename=$cmd;
175: $middlename=substr($middlename,0,16);
176: $middlename=~s/\W//g;
177: my $dfilename=
178: "$perlvar{'lonSockDir'}/delayed/$now.$middlename.$server";
179: {
180: my $dfh;
181: if ($dfh=Apache::File->new(">$dfilename")) {
182: print $dfh "$cmd\n";
183: }
184: }
185: sleep 2;
186: my $wcmd='';
187: {
188: my $dfh;
189: if ($dfh=Apache::File->new("$dfilename")) {
190: $wcmd=<$dfh>;
191: }
192: }
193: chomp($wcmd);
194: if ($wcmd eq $cmd) {
195: &logthis("<font color=blue>WARNING: ".
196: "Connection buffer $dfilename: $cmd</font>");
197: &logperm("D:$server:$cmd");
198: return 'con_delayed';
199: } else {
200: &logthis("<font color=red>CRITICAL:"
201: ." Critical connection failed: $server $cmd</font>");
202: &logperm("F:$server:$cmd");
203: return 'con_failed';
204: }
205: }
206: }
207: return $answer;
208: }
209:
210: # ---------------------------------------------------------- Append Environment
211:
212: sub appenv {
213: my %newenv=@_;
214: map {
215: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
216: &logthis("<font color=blue>WARNING: ".
217: "Attempt to modify environment ".$_." to ".$newenv{$_});
218: delete($newenv{$_});
219: } else {
220: $ENV{$_}=$newenv{$_};
221: }
222: } keys %newenv;
223: my @oldenv;
224: {
225: my $fh;
226: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
227: return 'error';
228: }
229: @oldenv=<$fh>;
230: }
231: for (my $i=0; $i<=$#oldenv; $i++) {
232: chomp($oldenv[$i]);
233: if ($oldenv[$i] ne '') {
234: my ($name,$value)=split(/=/,$oldenv[$i]);
235: unless (defined($newenv{$name})) {
236: $newenv{$name}=$value;
237: }
238: }
239: }
240: {
241: my $fh;
242: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
243: return 'error';
244: }
245: my $newname;
246: foreach $newname (keys %newenv) {
247: print $fh "$newname=$newenv{$newname}\n";
248: }
249: }
250: return 'ok';
251: }
252:
253: # ------------------------------ Find server with least workload from spare.tab
254:
255: sub spareserver {
256: my $tryserver;
257: my $spareserver='';
258: my $lowestserver=100;
259: foreach $tryserver (keys %spareid) {
260: my $answer=reply('load',$tryserver);
261: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
262: $spareserver="http://$hostname{$tryserver}";
263: $lowestserver=$answer;
264: }
265: }
266: return $spareserver;
267: }
268:
269: # --------- Try to authenticate user from domain's lib servers (first this one)
270:
271: sub authenticate {
272: my ($uname,$upass,$udom)=@_;
273: $upass=escape($upass);
274: if (($perlvar{'lonRole'} eq 'library') &&
275: ($udom eq $perlvar{'lonDefDomain'})) {
276: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$perlvar{'lonHostID'});
277: if ($answer =~ /authorized/) {
278: if ($answer eq 'authorized') {
279: &logthis("User $uname at $udom authorized by local server");
280: return $perlvar{'lonHostID'};
281: }
282: if ($answer eq 'non_authorized') {
283: &logthis("User $uname at $udom rejected by local server");
284: return 'no_host';
285: }
286: }
287: }
288:
289: my $tryserver;
290: foreach $tryserver (keys %libserv) {
291: if ($hostdom{$tryserver} eq $udom) {
292: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$tryserver);
293: if ($answer =~ /authorized/) {
294: if ($answer eq 'authorized') {
295: &logthis("User $uname at $udom authorized by $tryserver");
296: return $tryserver;
297: }
298: if ($answer eq 'non_authorized') {
299: &logthis("User $uname at $udom rejected by $tryserver");
300: return 'no_host';
301: }
302: }
303: }
304: }
305: &logthis("User $uname at $udom could not be authenticated");
306: return 'no_host';
307: }
308:
309: # ---------------------- Find the homebase for a user from domain's lib servers
310:
311: sub homeserver {
312: my ($uname,$udom)=@_;
313:
314: my $index="$uname:$udom";
315: if ($homecache{$index}) { return "$homecache{$index}"; }
316:
317: my $tryserver;
318: foreach $tryserver (keys %libserv) {
319: if ($hostdom{$tryserver} eq $udom) {
320: my $answer=reply("home:$udom:$uname",$tryserver);
321: if ($answer eq 'found') {
322: $homecache{$index}=$tryserver;
323: return $tryserver;
324: }
325: }
326: }
327: return 'no_host';
328: }
329:
330: # ----------------------------- Subscribe to a resource, return URL if possible
331:
332: sub subscribe {
333: my $fname=shift;
334: my $author=$fname;
335: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
336: my ($udom,$uname)=split(/\//,$author);
337: my $home=homeserver($uname,$udom);
338: if (($home eq 'no_host') || ($home eq $perlvar{'lonHostID'})) {
339: return 'not_found';
340: }
341: my $answer=reply("sub:$fname",$home);
342: return $answer;
343: }
344:
345: # -------------------------------------------------------------- Replicate file
346:
347: sub repcopy {
348: my $filename=shift;
349: $filename=~s/\/+/\//g;
350: my $transname="$filename.in.transfer";
351: if ((-e $filename) || (-e $transname)) { return OK; }
352: my $remoteurl=subscribe($filename);
353: if ($remoteurl eq 'con_lost') {
354: &logthis("Subscribe returned con_lost: $filename");
355: return HTTP_SERVICE_UNAVAILABLE;
356: } elsif ($remoteurl eq 'not_found') {
357: &logthis("Subscribe returned not_found: $filename");
358: return HTTP_NOT_FOUND;
359: } elsif ($remoteurl eq 'rejected') {
360: &logthis("Subscribe returned rejected: $filename");
361: return FORBIDDEN;
362: } elsif ($remoteurl eq 'directory') {
363: return OK;
364: } else {
365: my @parts=split(/\//,$filename);
366: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
367: if ($path ne "$perlvar{'lonDocRoot'}/res") {
368: &logthis("Malconfiguration for replication: $filename");
369: return HTTP_BAD_REQUEST;
370: }
371: my $count;
372: for ($count=5;$count<$#parts;$count++) {
373: $path.="/$parts[$count]";
374: if ((-e $path)!=1) {
375: mkdir($path,0777);
376: }
377: }
378: my $ua=new LWP::UserAgent;
379: my $request=new HTTP::Request('GET',"$remoteurl");
380: my $response=$ua->request($request,$transname);
381: if ($response->is_error()) {
382: unlink($transname);
383: my $message=$response->status_line;
384: &logthis("<font color=blue>WARNING:"
385: ." LWP get: $message: $filename</font>");
386: return HTTP_SERVICE_UNAVAILABLE;
387: } else {
388: if ($remoteurl!~/\.meta$/) {
389: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
390: my $mresponse=$ua->request($mrequest,$filename.'.meta');
391: if ($mresponse->is_error()) {
392: unlink($filename.'.meta');
393: &logthis(
394: "<font color=yellow>INFO: No metadata: $filename</font>");
395: }
396: }
397: rename($transname,$filename);
398: return OK;
399: }
400: }
401: }
402:
403: # --------------------------------------------------------- Server Side Include
404:
405: sub ssi {
406:
407: my ($fn,%form)=@_;
408:
409: my $ua=new LWP::UserAgent;
410:
411: my $request;
412:
413: if (%form) {
414: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
415: $request->content(join '&', map { "$_=$form{$_}" } keys %form);
416: } else {
417: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
418: }
419:
420: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
421: my $response=$ua->request($request);
422:
423: return $response->content;
424: }
425:
426: # ------------------------------------------------------------------------- Log
427:
428: sub log {
429: my ($dom,$nam,$hom,$what)=@_;
430: return critical("log:$dom:$nam:$what",$hom);
431: }
432:
433: # ----------------------------------------------------------------------- Store
434:
435: sub store {
436: my %storehash=@_;
437: my $symb;
438: unless ($symb=escape(&symbread())) { return ''; }
439: my $namespace;
440: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
441: my $namevalue='';
442: map {
443: $namevalue.=escape($_).'='.escape($storehash{$_}).'&';
444: } keys %storehash;
445: $namevalue=~s/\&$//;
446: return reply(
447: "store:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb:$namevalue",
448: "$ENV{'user.home'}");
449: }
450:
451: # -------------------------------------------------------------- Critical Store
452:
453: sub cstore {
454: my %storehash=@_;
455: my $symb;
456: unless ($symb=escape(&symbread())) { return ''; }
457: my $namespace;
458: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
459: my $namevalue='';
460: map {
461: $namevalue.=escape($_).'='.escape($storehash{$_}).'&';
462: } keys %storehash;
463: $namevalue=~s/\&$//;
464: return critical(
465: "store:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb:$namevalue",
466: "$ENV{'user.home'}");
467: }
468:
469: # --------------------------------------------------------------------- Restore
470:
471: sub restore {
472: my $symb;
473: unless ($symb=escape(&symbread())) { return ''; }
474: my $namespace;
475: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
476: my $answer=reply(
477: "restore:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb",
478: "$ENV{'user.home'}");
479: my %returnhash=();
480: map {
481: my ($name,$value)=split(/\=/,$_);
482: $returnhash{&unescape($name)}=&unescape($value);
483: } split(/\&/,$answer);
484: map {
485: $returnhash{$_}=$returnhash{$returnhash{'version'}.':'.$_};
486: } split(/\:/,$returnhash{$returnhash{'version'}.':keys'});
487: return %returnhash;
488: }
489:
490: # ---------------------------------------------------------- Course Description
491:
492: sub coursedescription {
493: my $courseid=shift;
494: $courseid=~s/^\///;
495: $courseid=~s/\_/\//g;
496: my ($cdomain,$cnum)=split(/\//,$courseid);
497: my $chome=homeserver($cnum,$cdomain);
498: if ($chome ne 'no_host') {
499: my $rep=reply("dump:$cdomain:$cnum:environment",$chome);
500: if ($rep ne 'con_lost') {
501: my %cachehash=();
502: my %returnhash=('home' => $chome,
503: 'domain' => $cdomain,
504: 'num' => $cnum);
505: map {
506: my ($name,$value)=split(/\=/,$_);
507: $name=&unescape($name);
508: $value=&unescape($value);
509: $returnhash{$name}=$value;
510: if ($name eq 'description') {
511: $cachehash{$courseid}=$value;
512: }
513: } split(/\&/,$rep);
514: $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
515: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
516: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
517: put ('nohist_coursedescriptions',%cachehash);
518: return %returnhash;
519: }
520: }
521: return ();
522: }
523:
524: # -------------------------------------------------------- Get user priviledges
525:
526: sub rolesinit {
527: my ($domain,$username,$authhost)=@_;
528: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
529: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
530: my %allroles=();
531: my %thesepriv=();
532: my $now=time;
533: my $userroles="user.login.time=$now\n";
534: my $thesestr;
535:
536: if ($rolesdump ne '') {
537: map {
538: if ($_!~/^rolesdef\&/) {
539: my ($area,$role)=split(/=/,$_);
540: $area=~s/\_\w\w$//;
541: my ($trole,$tend,$tstart)=split(/_/,$role);
542: $userroles.='user.role.'.$trole.'.'.$area.'='.
543: $tstart.'.'.$tend."\n";
544: if ($tend!=0) {
545: if ($tend<$now) {
546: $trole='';
547: }
548: }
549: if ($tstart!=0) {
550: if ($tstart>$now) {
551: $trole='';
552: }
553: }
554: if (($area ne '') && ($trole ne '')) {
555: my $spec=$trole.'.'.$area;
556: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
557: if ($trole =~ /^cr\//) {
558: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
559: my $homsvr=homeserver($rauthor,$rdomain);
560: if ($hostname{$homsvr} ne '') {
561: my $roledef=
562: reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
563: $homsvr);
564: if (($roledef ne 'con_lost') && ($roledef ne '')) {
565: my ($syspriv,$dompriv,$coursepriv)=
566: split(/\_/,unescape($roledef));
567: $allroles{'cm./'}.=':'.$syspriv;
568: $allroles{$spec.'./'}.=':'.$syspriv;
569: if ($tdomain ne '') {
570: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
571: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
572: if ($trest ne '') {
573: $allroles{'cm.'.$area}.=':'.$coursepriv;
574: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
575: }
576: }
577: }
578: }
579: } else {
580: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
581: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
582: if ($tdomain ne '') {
583: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
584: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
585: if ($trest ne '') {
586: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
587: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
588: }
589: }
590: }
591: }
592: }
593: } split(/&/,$rolesdump);
594: map {
595: %thesepriv=();
596: map {
597: if ($_ ne '') {
598: my ($priviledge,$restrictions)=split(/&/,$_);
599: if ($restrictions eq '') {
600: $thesepriv{$priviledge}='F';
601: } else {
602: if ($thesepriv{$priviledge} ne 'F') {
603: $thesepriv{$priviledge}.=$restrictions;
604: }
605: }
606: }
607: } split(/:/,$allroles{$_});
608: $thesestr='';
609: map { $thesestr.=':'.$_.'&'.$thesepriv{$_}; } keys %thesepriv;
610: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
611: } keys %allroles;
612: }
613: return $userroles;
614: }
615:
616: # --------------------------------------------------------------- get interface
617:
618: sub get {
619: my ($namespace,@storearr)=@_;
620: my $items='';
621: map {
622: $items.=escape($_).'&';
623: } @storearr;
624: $items=~s/\&$//;
625: my $rep=reply("get:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
626: $ENV{'user.home'});
627: my @pairs=split(/\&/,$rep);
628: my %returnhash=();
629: my $i=0;
630: map {
631: $returnhash{$_}=unescape($pairs[$i]);
632: $i++;
633: } @storearr;
634: return %returnhash;
635: }
636:
637: # --------------------------------------------------------------- del interface
638:
639: sub del {
640: my ($namespace,@storearr)=@_;
641: my $items='';
642: map {
643: $items.=escape($_).'&';
644: } @storearr;
645: $items=~s/\&$//;
646: return reply("del:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
647: $ENV{'user.home'});
648: }
649:
650: # -------------------------------------------------------------- dump interface
651:
652: sub dump {
653: my $namespace=shift;
654: my $rep=reply("dump:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace",
655: $ENV{'user.home'});
656: my @pairs=split(/\&/,$rep);
657: my %returnhash=();
658: map {
659: my ($key,$value)=split(/=/,$_);
660: $returnhash{unescape($key)}=unescape($value);
661: } @pairs;
662: return %returnhash;
663: }
664:
665: # --------------------------------------------------------------- put interface
666:
667: sub put {
668: my ($namespace,%storehash)=@_;
669: my $items='';
670: map {
671: $items.=escape($_).'='.escape($storehash{$_}).'&';
672: } keys %storehash;
673: $items=~s/\&$//;
674: return reply("put:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
675: $ENV{'user.home'});
676: }
677:
678: # ------------------------------------------------------ critical put interface
679:
680: sub cput {
681: my ($namespace,%storehash)=@_;
682: my $items='';
683: map {
684: $items.=escape($_).'='.escape($storehash{$_}).'&';
685: } keys %storehash;
686: $items=~s/\&$//;
687: return critical
688: ("put:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
689: $ENV{'user.home'});
690: }
691:
692: # -------------------------------------------------------------- eget interface
693:
694: sub eget {
695: my ($namespace,@storearr)=@_;
696: my $items='';
697: map {
698: $items.=escape($_).'&';
699: } @storearr;
700: $items=~s/\&$//;
701: my $rep=reply("eget:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
702: $ENV{'user.home'});
703: my @pairs=split(/\&/,$rep);
704: my %returnhash=();
705: my $i=0;
706: map {
707: $returnhash{$_}=unescape($pairs[$i]);
708: $i++;
709: } @storearr;
710: return %returnhash;
711: }
712:
713: # ------------------------------------------------- Check for a user priviledge
714:
715: sub allowed {
716: my ($priv,$uri)=@_;
717: $uri=~s/^\/res//;
718: $uri=~s/^\///;
719:
720: # Free bre access to adm resources
721:
722: if (($uri=~/^adm\//) && ($priv eq 'bre')) {
723: return 'F';
724: }
725:
726: # Gather priviledges over system and domain
727:
728: my $thisallowed='';
729: if ($ENV{'user.priv./'}=~/$priv\&([^\:]*)/) {
730: $thisallowed.=$1;
731: }
732: if ($ENV{'user.priv./'.(split(/\//,$uri))[0].'/'}=~/$priv\&([^\:]*)/) {
733: $thisallowed.=$1;
734: }
735:
736: # Full access at system or domain level? Exit.
737:
738: if ($thisallowed=~/F/) {
739: return 'F';
740: }
741:
742: # The user does not have full access at system or domain level
743: # Course level access control
744:
745: # uri itself refering to a course?
746:
747: if ($uri=~/\.course$/) {
748: if ($ENV{'user.priv./'.$uri}=~/$priv\&([^\:]*)/) {
749: $thisallowed.=$1;
750: }
751: # Full access on course level? Exit.
752: if ($thisallowed=~/F/) {
753: return 'F';
754: }
755:
756: # uri is refering to an individual resource; user needs to be in a course
757:
758: } else {
759:
760: unless(defined($ENV{'request.course.id'})) {
761: return '1';
762: }
763:
764: # Get access priviledges for course
765:
766: if ($ENV{'user.priv./'.$ENV{'request.course.id'}}=~/$priv\&([^\:]*)/) {
767: $thisallowed.=$1;
768: }
769:
770: # See if resource or referer is part of this course
771:
772: my @uriparts=split(/\//,$uri);
773: my $urifile=$uriparts[$#uriparts];
774: $urifile=~/\.(\w+)$/;
775: my $uritype=$1;
776: $#uriparts--;
777: my $uripath=join('/',@uriparts);
778: my $uricond=-1;
779: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$uripath}=~
780: /\&$urifile\:(\d+)\&/) {
781: $uricond=$1;
782: } elsif (($fe{$uritype} eq 'emb') || ($fe{$uritype} eq 'img')) {
783: my $refuri=$ENV{'HTTP_REFERER'};
784: $refuri=~s/^\/res//;
785: $refuri=~s/^\///;
786: @uriparts=split(/\//,$refuri);
787: $urifile=$uriparts[$#uriparts];
788: $#uriparts--;
789: $uripath=join('/',@uriparts);
790: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$uripath}=~
791: /\&$urifile\:(\d+)\&/) {
792: $uricond=$1;
793: }
794: }
795:
796: if ($uricond>=0) {
797:
798: # The resource is part of the course
799: # If user had full access on course level, go ahead
800:
801: if ($thisallowed=~/F/) {
802: return 'F';
803: }
804:
805: # Restricted by state?
806:
807: if ($thisallowed=~/X/) {
808: if (&condval($uricond)) {
809: return '2';
810: } else {
811: return '';
812: }
813: }
814: }
815: }
816: return $thisallowed;
817: }
818:
819: # ---------------------------------------------------------- Refresh State Info
820:
821: sub refreshstate {
822: }
823:
824: # ----------------------------------------------------------------- Define Role
825:
826: sub definerole {
827: if (allowed('mcr','/')) {
828: my ($rolename,$sysrole,$domrole,$courole)=@_;
829: map {
830: my ($crole,$cqual)=split(/\&/,$_);
831: if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
832: if ($pr{'cr:s'}=~/$crole\&/) {
833: if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
834: return "refused:s:$crole&$cqual";
835: }
836: }
837: } split('/',$sysrole);
838: map {
839: my ($crole,$cqual)=split(/\&/,$_);
840: if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
841: if ($pr{'cr:d'}=~/$crole\&/) {
842: if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
843: return "refused:d:$crole&$cqual";
844: }
845: }
846: } split('/',$domrole);
847: map {
848: my ($crole,$cqual)=split(/\&/,$_);
849: if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
850: if ($pr{'cr:c'}=~/$crole\&/) {
851: if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
852: return "refused:c:$crole&$cqual";
853: }
854: }
855: } split('/',$courole);
856: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
857: "$ENV{'user.domain'}:$ENV{'user.name'}:".
858: "rolesdef_$rolename=".
859: escape($sysrole.'_'.$domrole.'_'.$courole);
860: return reply($command,$ENV{'user.home'});
861: } else {
862: return 'refused';
863: }
864: }
865:
866: # ------------------------------------------------------------------ Plain Text
867:
868: sub plaintext {
869: my $short=shift;
870: return $prp{$short};
871: }
872:
873: # ------------------------------------------------------------------ Plain Text
874:
875: sub fileembstyle {
876: my $ending=shift;
877: return $fe{$ending};
878: }
879:
880: # ------------------------------------------------------------ Description Text
881:
882: sub filedecription {
883: my $ending=shift;
884: return $fd{$ending};
885: }
886:
887: # ----------------------------------------------------------------- Assign Role
888:
889: sub assignrole {
890: my ($udom,$uname,$url,$role,$end,$start)=@_;
891: my $mrole;
892: $url=declutter($url);
893: if ($role =~ /^cr\//) {
894: unless ($url=~/\.course$/) { return 'invalid'; }
895: unless (allowed('ccr',$url)) { return 'refused'; }
896: $mrole='cr';
897: } else {
898: unless (($url=~/\.course$/) || ($url=~/\/$/)) { return 'invalid'; }
899: unless (allowed('c'+$role)) { return 'refused'; }
900: $mrole=$role;
901: }
902: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
903: "$udom:$uname:$url".'_'."$mrole=$role";
904: if ($end) { $command.='_$end'; }
905: if ($start) {
906: if ($end) {
907: $command.='_$start';
908: } else {
909: $command.='_0_$start';
910: }
911: }
912: return &reply($command,&homeserver($uname,$udom));
913: }
914:
915: # ---------------------------------------------------------- Assign Custom Role
916:
917: sub assigncustomrole {
918: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
919: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
920: $end,$start);
921: }
922:
923: # ----------------------------------------------------------------- Revoke Role
924:
925: sub revokerole {
926: my ($udom,$uname,$url,$role)=@_;
927: my $now=time;
928: return &assignrole($udom,$uname,$url,$role,$now);
929: }
930:
931: # ---------------------------------------------------------- Revoke Custom Role
932:
933: sub revokecustomrole {
934: my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
935: my $now=time;
936: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
937: }
938:
939: # ------------------------------------------------------------ Directory lister
940:
941: sub dirlist {
942: my $uri=shift;
943: $uri=~s/^\///;
944: $uri=~s/\/$//;
945: my ($res,$udom,$uname,@rest)=split(/\//,$uri);
946: if ($udom) {
947: if ($uname) {
948: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
949: homeserver($uname,$udom));
950: return split(/:/,$listing);
951: } else {
952: my $tryserver;
953: my %allusers=();
954: foreach $tryserver (keys %libserv) {
955: if ($hostdom{$tryserver} eq $udom) {
956: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
957: $tryserver);
958: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
959: && ($listing ne 'con_lost')) {
960: map {
961: my ($entry,@stat)=split(/&/,$_);
962: $allusers{$entry}=1;
963: } split(/:/,$listing);
964: }
965: }
966: }
967: my $alluserstr='';
968: map {
969: $alluserstr.=$_.'&user:';
970: } sort keys %allusers;
971: $alluserstr=~s/:$//;
972: return split(/:/,$alluserstr);
973: }
974: } else {
975: my $tryserver;
976: my %alldom=();
977: foreach $tryserver (keys %libserv) {
978: $alldom{$hostdom{$tryserver}}=1;
979: }
980: my $alldomstr='';
981: map {
982: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
983: } sort keys %alldom;
984: $alldomstr=~s/:$//;
985: return split(/:/,$alldomstr);
986: }
987: }
988:
989: # -------------------------------------------------------- Value of a Condition
990:
991: sub directcondval {
992: my $number=shift;
993: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
994: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
995: } else {
996: return 2;
997: }
998: }
999:
1000: sub condval {
1001: my $condidx=shift;
1002: my $result=0;
1003: if ($ENV{'request.course.id'}) {
1004: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$condidx})) {
1005: my $operand='|';
1006: my @stack;
1007: map {
1008: if ($_ eq '(') {
1009: push @stack,($operand,$result)
1010: } elsif ($_ eq ')') {
1011: my $before=pop @stack;
1012: if (pop @stack eq '&') {
1013: $result=$result>$before?$before:$result;
1014: } else {
1015: $result=$result>$before?$result:$before;
1016: }
1017: } elsif (($_ eq '&') || ($_ eq '|')) {
1018: $operand=$_;
1019: } else {
1020: my $new=directcondval($_);
1021: if ($operand eq '&') {
1022: $result=$result>$new?$new:$result;
1023: } else {
1024: $result=$result>$new?$result:$new;
1025: }
1026: }
1027: } ($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$condidx}=~
1028: /(\d+|\(|\)|\&|\|)/g);
1029: }
1030: }
1031: return $result;
1032: }
1033:
1034: # --------------------------------------------------------- Value of a Variable
1035:
1036: sub varval {
1037: my $varname=shift;
1038: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
1039: my $rest;
1040: if ($therest[0]) {
1041: $rest=join('.',@therest);
1042: } else {
1043: $rest='';
1044: }
1045: if ($realm eq 'user') {
1046: # --------------------------------------------------------------- user.resource
1047: if ($space eq 'resource') {
1048: # ----------------------------------------------------------------- user.access
1049: } elsif ($space eq 'access') {
1050: return &allowed($qualifier,$rest);
1051: # ------------------------------------------ user.preferences, user.environment
1052: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1053: return $ENV{join('.',('environment',$qualifier,$rest))};
1054: # ----------------------------------------------------------------- user.course
1055: } elsif ($space eq 'course') {
1056: return $ENV{join('.',('request.course',$qualifier))};
1057: # ------------------------------------------------------------------- user.role
1058: } elsif ($space eq 'role') {
1059: my ($role,$where)=split(/\./,$ENV{'request.role'});
1060: if ($qualifier eq 'value') {
1061: return $role;
1062: } elsif ($qualifier eq 'extent') {
1063: return $where;
1064: }
1065: # ----------------------------------------------------------------- user.domain
1066: } elsif ($space eq 'domain') {
1067: return $ENV{'user.domain'};
1068: # ------------------------------------------------------------------- user.name
1069: } elsif ($space eq 'name') {
1070: return $ENV{'user.name'};
1071: # ---------------------------------------------------- Any other user namespace
1072: } else {
1073: my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
1074: my %reply=&get($space,$item);
1075: return $reply{$item};
1076: }
1077: } elsif ($realm eq 'request') {
1078: # ------------------------------------------------------------- request.browser
1079: if ($space eq 'browser') {
1080: return $ENV{'browser.'.$qualifier};
1081: } elsif ($space eq 'filename') {
1082: return $ENV{'request.filename'};
1083: }
1084: } elsif ($realm eq 'course') {
1085: # ---------------------------------------------------------- course.description
1086: if ($space eq 'description') {
1087: my %reply=&coursedescription($ENV{'request.course.id'});
1088: return $reply{'description'};
1089: # ------------------------------------------------------------------- course.id
1090: } elsif ($space eq 'id') {
1091: return $ENV{'request.course.id'};
1092: # -------------------------------------------------- Any other course namespace
1093: } else {
1094: my ($cdom,$cnam)=split(/\_/,$ENV{'request.course.id'});
1095: my $chome=&homeserver($cnam,$cdom);
1096: my $item=join('.',($qualifier,$rest));
1097: return &unescape
1098: (&reply('get:'.$cdom.':'.$cnam.':'.&escape($space).':'.
1099: &escape($item),$chome));
1100: }
1101: } elsif ($realm eq 'userdata') {
1102: my $uhome=&homeserver($qualifier,$space);
1103: # ----------------------------------------------- userdata.domain.name.resource
1104: # ---------------------------------------------------- Any other user namespace
1105: } elsif ($realm eq 'environment') {
1106: # ----------------------------------------------------------------- environment
1107: return $ENV{join('.',($space,$qualifier,$rest))};
1108: } elsif ($realm eq 'system') {
1109: # ----------------------------------------------------------------- system.time
1110: if ($space eq 'time') {
1111: return time;
1112: }
1113: }
1114: return '';
1115: }
1116:
1117: # ------------------------------------------------- Update symbolic store links
1118:
1119: sub symblist {
1120: my ($mapname,%newhash)=@_;
1121: $mapname=declutter($mapname);
1122: my %hash;
1123: if (($ENV{'request.course.fn'}) && (%newhash)) {
1124: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1125: &GDBM_WRCREAT,0640)) {
1126: map {
1127: $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
1128: } keys %newhash;
1129: if (untie(%hash)) {
1130: return 'ok';
1131: }
1132: }
1133: }
1134: return 'error';
1135: }
1136:
1137: # ------------------------------------------------------ Return symb list entry
1138:
1139: sub symbread {
1140: my $thisfn=shift;
1141: unless ($thisfn) {
1142: $thisfn=$ENV{'request.filename'};
1143: }
1144: $thisfn=declutter($thisfn);
1145: my %hash;
1146: my %bighash;
1147: my $syval='';
1148: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1149: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1150: &GDBM_READER,0640)) {
1151: $syval=$hash{$thisfn};
1152: untie(%hash);
1153: }
1154: # ---------------------------------------------------------- There was an entry
1155: if ($syval) {
1156: unless ($syval=~/\_\d+$/) {
1157: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1158: &appenv('request.ambiguous' => $thisfn);
1159: return '';
1160: }
1161: $syval.=$1;
1162: }
1163: } else {
1164: # ------------------------------------------------------- Was not in symb table
1165: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1166: &GDBM_READER,0640)) {
1167: # ---------------------------------------------- Get ID(s) for current resource
1168: my $ids=$bighash{'ids_/res/'.$thisfn};
1169: if ($ids) {
1170: # ------------------------------------------------------------------- Has ID(s)
1171: my @possibilities=split(/\,/,$ids);
1172: if ($#possibilities==0) {
1173: # ----------------------------------------------- There is only one possibility
1174: my ($mapid,$resid)=split(/\./,$ids);
1175: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
1176: } else {
1177: # ------------------------------------------ There is more than one possibility
1178: my $realpossible=0;
1179: map {
1180: my $file=$bighash{'src_'.$_};
1181: if (&allowed('bre',$file)) {
1182: my ($mapid,$resid)=split(/\./,$_);
1183: if ($bighash{'map_type_'.$mapid} ne 'page') {
1184: $realpossible++;
1185: $syval=declutter($bighash{'map_id_'.$mapid}).
1186: '___'.$resid;
1187: }
1188: }
1189: } @possibilities;
1190: if ($realpossible!=1) { $syval=''; }
1191: }
1192: }
1193: untie(%bighash)
1194: }
1195: }
1196: if ($syval) { return $syval.'___'.$thisfn; }
1197: }
1198: &appenv('request.ambiguous' => $thisfn);
1199: return '';
1200: }
1201:
1202: # ---------------------------------------------------------- Return random seed
1203:
1204: sub numval {
1205: my $txt=shift;
1206: $txt=~tr/A-J/0-9/;
1207: $txt=~tr/a-j/0-9/;
1208: $txt=~tr/K-T/0-9/;
1209: $txt=~tr/k-t/0-9/;
1210: $txt=~tr/U-Z/0-5/;
1211: $txt=~tr/u-z/0-5/;
1212: $txt=~s/\D//g;
1213: return int($txt);
1214: }
1215:
1216: sub rndseed {
1217: my $symb;
1218: unless ($symb=&symbread()) { return time; }
1219: my $symbchck=unpack("%32C*",$symb);
1220: my $symbseed=numval($symb)%$symbchck;
1221: my $namechck=unpack("%32C*",$ENV{'user.name'});
1222: my $nameseed=numval($ENV{'user.name'})%$namechck;
1223: return int( $symbseed
1224: .$nameseed
1225: .unpack("%32C*",$ENV{'user.domain'})
1226: .unpack("%32C*",$ENV{'request.course.id'})
1227: .$namechck
1228: .$symbchck);
1229: }
1230:
1231: # ------------------------------------------------------------ Serves up a file
1232: # returns either the contents of the file or a -1
1233: sub getfile {
1234: my $file=shift;
1235: &repcopy($file);
1236: if (! -e $file ) { return -1; };
1237: my $fh=Apache::File->new($file);
1238: my $a='';
1239: while (<$fh>) { $a .=$_; }
1240: return $a
1241: }
1242:
1243: sub filelocation {
1244: my ($dir,$file) = @_;
1245: my $location;
1246: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1247: $file=~s/^$perlvar{'lonDocRoot'}//;
1248: $file=~s:^/*res::;
1249: if ( !( $file =~ m:^/:) ) {
1250: $location = $dir. '/'.$file;
1251: } else {
1252: $location = '/home/httpd/html/res'.$file;
1253: }
1254: $location=~s://+:/:g; # remove duplicate /
1255: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
1256: return $location;
1257: }
1258:
1259: sub hreflocation {
1260: my ($dir,$file)=@_;
1261: unless (($_=~/^http:\/\//i) || ($_=~/^\//)) {
1262: my $finalpath=filelocation($dir,$file);
1263: $finalpath=~s/^\/home\/httpd\/html//;
1264: return $finalpath;
1265: } else {
1266: return $file;
1267: }
1268: }
1269:
1270: # ------------------------------------------------------------- Declutters URLs
1271:
1272: sub declutter {
1273: my $thisfn=shift;
1274: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
1275: $thisfn=~s/^\///;
1276: $thisfn=~s/^res\///;
1277: return $thisfn;
1278: }
1279:
1280: # -------------------------------------------------------- Escape Special Chars
1281:
1282: sub escape {
1283: my $str=shift;
1284: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
1285: return $str;
1286: }
1287:
1288: # ----------------------------------------------------- Un-Escape Special Chars
1289:
1290: sub unescape {
1291: my $str=shift;
1292: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1293: return $str;
1294: }
1295:
1296: # ================================================================ Main Program
1297:
1298: sub BEGIN {
1299: if ($readit ne 'done') {
1300: # ------------------------------------------------------------ Read access.conf
1301: {
1302: my $config=Apache::File->new("/etc/httpd/conf/access.conf");
1303:
1304: while (my $configline=<$config>) {
1305: if ($configline =~ /PerlSetVar/) {
1306: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1307: chomp($varvalue);
1308: $perlvar{$varname}=$varvalue;
1309: }
1310: }
1311: }
1312:
1313: # ------------------------------------------------------------- Read hosts file
1314: {
1315: my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
1316:
1317: while (my $configline=<$config>) {
1318: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
1319: $hostname{$id}=$name;
1320: $hostdom{$id}=$domain;
1321: if ($role eq 'library') { $libserv{$id}=$name; }
1322: }
1323: }
1324:
1325: # ------------------------------------------------------ Read spare server file
1326: {
1327: my $config=Apache::File->new("$perlvar{'lonTabDir'}/spare.tab");
1328:
1329: while (my $configline=<$config>) {
1330: chomp($configline);
1331: if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
1332: $spareid{$configline}=1;
1333: }
1334: }
1335: }
1336: # ------------------------------------------------------------ Read permissions
1337: {
1338: my $config=Apache::File->new("$perlvar{'lonTabDir'}/roles.tab");
1339:
1340: while (my $configline=<$config>) {
1341: chomp($configline);
1342: my ($role,$perm)=split(/ /,$configline);
1343: if ($perm ne '') { $pr{$role}=$perm; }
1344: }
1345: }
1346:
1347: # -------------------------------------------- Read plain texts for permissions
1348: {
1349: my $config=Apache::File->new("$perlvar{'lonTabDir'}/rolesplain.tab");
1350:
1351: while (my $configline=<$config>) {
1352: chomp($configline);
1353: my ($short,$plain)=split(/:/,$configline);
1354: if ($plain ne '') { $prp{$short}=$plain; }
1355: }
1356: }
1357:
1358: # ------------------------------------------------------------- Read file types
1359: {
1360: my $config=Apache::File->new("$perlvar{'lonTabDir'}/filetypes.tab");
1361:
1362: while (my $configline=<$config>) {
1363: chomp($configline);
1364: my ($ending,$emb,@descr)=split(/\s+/,$configline);
1365: if ($descr[0] ne '') {
1366: $fe{$ending}=$emb;
1367: $fd{$ending}=join(' ',@descr);
1368: }
1369: }
1370: }
1371:
1372:
1373: $readit='done';
1374: &logthis('<font color=yellow>INFO: Read configuration</font>');
1375: }
1376: }
1377: 1;
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