1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
5: # 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
6: # 11/8,11/16,11/18,11/22,11/23,12/22,
7: # 01/06,01/13,02/24,02/28,02/29,
8: # 03/01,03/02,03/06,03/07,03/13,
9: # 04/05,05/29,05/31,06/01,
10: # 06/05,06/26 Gerd Kortemeyer
11: # 06/26 Ben Tyszka
12: # 06/30,07/15,07/17,07/18,07/20,07/21,07/22,07/25 Gerd Kortemeyer
13: # 08/14 Ben Tyszka
14: # 08/22,08/28,08/31,09/01,09/02,09/04,09/05,09/25,09/28,09/30 Gerd Kortemeyer
15: # 10/04 Gerd Kortemeyer
16: # 10/04 Guy Albertelli
17: # 10/06,10/09,10/10,10/11,10/14,10/20,10/23,10/25,10/26,10/27,10/28,10/29,
18: # 10/30,10/31,
19: # 11/2,11/14,11/15,11/16,11/20,11/21,11/22,11/25,11/27,
20: # 12/02,12/12,12/13,12/14,12/28,12/29 Gerd Kortemeyer
21: # 05/01/01 Guy Albertelli
22: # 05/01,06/01,09/01 Gerd Kortemeyer
23: # 09/01 Guy Albertelli
24: # 09/01,10/01,11/01 Gerd Kortemeyer
25: # YEAR=2001
26: # 02/27/01 Scott Harrison
27: # 3/2 Gerd Kortemeyer
28: # 3/15,3/19 Scott Harrison
29: # 3/19,3/20 Gerd Kortemeyer
30: # 3/22,3/27,4/2,4/16,4/17 Scott Harrison
31: # 5/26,5/28 Gerd Kortemeyer
32: # 5/30 H. K. Ng
33: # 6/1 Gerd Kortemeyer
34: # July Guy Albertelli
35: # 8/4,8/7,8/8,8/9,8/11,8/16,8/17,8/18,8/20,8/23,9/20,9/21,9/26,
36: # 10/2 Gerd Kortemeyer
37: # 10/5,10/10,11/13,11/15 Scott Harrison
38: #
39: # $Id: lonnet.pm,v 1.170 2001/11/16 07:00:07 harris41 Exp $
40: ###
41:
42: # Functions for use by content handlers:
43: #
44: # metadata_query(sql-query-string,custom-metadata-regex) :
45: # returns file handle of where sql and
46: # regex results will be stored for query
47: # plaintext(short) : plain text explanation of short term
48: # fileembstyle(ext) : embed style in page for file extension
49: # filedescription(ext) : descriptor text for file extension
50: # allowed(short,url) : returns codes for allowed actions
51: # F: full access
52: # U,I,K: authentication modes (cxx only)
53: # '': forbidden
54: # 1: user needs to choose course
55: # 2: browse allowed
56: # definerole(rolename,sys,dom,cou) : define a custom role rolename
57: # set privileges in format of lonTabs/roles.tab for
58: # system, domain and course level,
59: # assignrole(udom,uname,url,role,end,start) : give a role to a user for the
60: # level given by url. Optional start and end dates
61: # (leave empty string or zero for "no date")
62: # assigncustomrole (udom,uname,url,rdom,rnam,rolename,end,start) : give a
63: # custom role to a user for the level given by url.
64: # Specify name and domain of role author, and role name
65: # revokerole (udom,uname,url,role) : Revoke a role for url
66: # revokecustomrole (udom,uname,url,rdom,rnam,rolename) : Revoke a custom role
67: # appenv(hash) : adds hash to session environment
68: # delenv(varname) : deletes all environment entries starting with varname
69: # store(hashref,symb,courseid,udom,uname)
70: # : stores hash permanently for this url
71: # hashref needs to be given, and should be a \%hashname
72: # the remaining args aren't required and if they aren't
73: # passed or are '' they will be derived from the ENV
74: # cstore(hashref,symb,courseid,udom,uname)
75: # : same as store but uses the critical interface to
76: # guarentee a store
77: # restore(symb,courseid,udom,uname)
78: # : returns hash for this symb, all args are optional
79: # if they aren't given they will be derived from the
80: # current enviroment
81: #
82: #
83: # for the next 6 functions udom and uname are optional
84: # if supplied they use udom as the domain and uname
85: # as the username for the function (supply a courseid
86: # for the uname if you want a course database)
87: # if not supplied it uses %ENV and looks at
88: # user. attribute for the values
89: #
90: # eget(namesp,arrayref,udom,uname)
91: # : returns hash with keys from array reference filled
92: # in from namesp (encrypts the return communication)
93: # get(namesp,arrayref,udom,uname)
94: # : returns hash with keys from array reference filled
95: # in from namesp
96: # dump(namesp,udom,uname) : dumps the complete namespace into a hash
97: # del(namesp,array,udom,uname) : deletes keys out of array from namesp
98: # put(namesp,hash,udom,uname) : stores hash in namesp
99: # cput(namesp,hash,udom,uname) : critical put
100: #
101: #
102: # ssi(url,hash) : does a complete request cycle on url to localhost, posts
103: # hash
104: # coursedescription(id) : returns and caches course description for id
105: # repcopy(filename) : replicate file
106: # dirlist(url) : gets a directory listing
107: # directcondval(index) : reading condition value of single condition from
108: # state string
109: # condval(index) : value of condition index based on state
110: # EXT(name) : value of a variable
111: # symblist(map,hash) : Updates symbolic storage links
112: # symbread([filename]) : returns the data handle (filename optional)
113: # rndseed([symb,courseid,domain,uname])
114: # : returns a random seed, all arguments are optional,
115: # if they aren't sent it use the environment to derive
116: # them
117: # Note: if symb isn't sent and it can't get one from
118: # &symbread it will use the current time as it's return
119: # receipt() : returns a receipt to be given out to users
120: # getfile(filename) : returns the contents of filename, or a -1 if it can't
121: # be found, replicates and subscribes to the file
122: # filelocation(dir,file) : returns a fairly clean absolute reference to file
123: # from the directory dir
124: # hreflocation(dir,file) : same as filelocation, but for hrefs
125: # log(domain,user,home,msg) : write to permanent log for user
126: # usection(domain,user,courseid) : output of section name/number or '' for
127: # "not in course" and '-1' for "no section"
128: # userenvironment(domain,user,what) : puts out any environment parameter
129: # for a user
130: # idput(domain,hash) : writes IDs for users from hash (name=>id,name=>id)
131: # idget(domain,array): returns hash with usernames (id=>name,id=>name) for
132: # an array of IDs
133: # idrget(domain,array): returns hash with IDs for usernames (name=>id,...) for
134: # an array of names
135: # metadata(file,entry): returns the metadata entry for a file. entry='keys'
136: # returns a comma separated list of keys
137: #
138:
139: package Apache::lonnet;
140:
141: use strict;
142: use Apache::File;
143: use LWP::UserAgent();
144: use HTTP::Headers;
145: use vars
146: qw(%perlvar %hostname %homecache %hostip %spareid %hostdom %libserv %pr %prp %fe %fd $readit %metacache %packagetab %courselogs);
147: use IO::Socket;
148: use GDBM_File;
149: use Apache::Constants qw(:common :http);
150: use HTML::TokeParser;
151: use Fcntl qw(:flock);
152:
153: # --------------------------------------------------------------------- Logging
154:
155: sub logtouch {
156: my $execdir=$perlvar{'lonDaemons'};
157: unless (-e "$execdir/logs/lonnet.log") {
158: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
159: close $fh;
160: }
161: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
162: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
163: }
164:
165: sub logthis {
166: my $message=shift;
167: my $execdir=$perlvar{'lonDaemons'};
168: my $now=time;
169: my $local=localtime($now);
170: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
171: print $fh "$local ($$): $message\n";
172: return 1;
173: }
174:
175: sub logperm {
176: my $message=shift;
177: my $execdir=$perlvar{'lonDaemons'};
178: my $now=time;
179: my $local=localtime($now);
180: my $fh=Apache::File->new(">>$execdir/logs/lonnet.perm.log");
181: print $fh "$now:$message:$local\n";
182: return 1;
183: }
184:
185: # -------------------------------------------------- Non-critical communication
186: sub subreply {
187: my ($cmd,$server)=@_;
188: my $peerfile="$perlvar{'lonSockDir'}/$server";
189: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
190: Type => SOCK_STREAM,
191: Timeout => 10)
192: or return "con_lost";
193: print $client "$cmd\n";
194: my $answer=<$client>;
195: if (!$answer) { $answer="con_lost"; }
196: chomp($answer);
197: return $answer;
198: }
199:
200: sub reply {
201: my ($cmd,$server)=@_;
202: my $answer=subreply($cmd,$server);
203: if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
204: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
205: &logthis("<font color=blue>WARNING:".
206: " $cmd to $server returned $answer</font>");
207: }
208: return $answer;
209: }
210:
211: # ----------------------------------------------------------- Send USR1 to lonc
212:
213: sub reconlonc {
214: my $peerfile=shift;
215: &logthis("Trying to reconnect for $peerfile");
216: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
217: if (my $fh=Apache::File->new("$loncfile")) {
218: my $loncpid=<$fh>;
219: chomp($loncpid);
220: if (kill 0 => $loncpid) {
221: &logthis("lonc at pid $loncpid responding, sending USR1");
222: kill USR1 => $loncpid;
223: sleep 1;
224: if (-e "$peerfile") { return; }
225: &logthis("$peerfile still not there, give it another try");
226: sleep 5;
227: if (-e "$peerfile") { return; }
228: &logthis(
229: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
230: } else {
231: &logthis(
232: "<font color=blue>WARNING:".
233: " lonc at pid $loncpid not responding, giving up</font>");
234: }
235: } else {
236: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
237: }
238: }
239:
240: # ------------------------------------------------------ Critical communication
241:
242: sub critical {
243: my ($cmd,$server)=@_;
244: unless ($hostname{$server}) {
245: &logthis("<font color=blue>WARNING:".
246: " Critical message to unknown server ($server)</font>");
247: return 'no_such_host';
248: }
249: my $answer=reply($cmd,$server);
250: if ($answer eq 'con_lost') {
251: my $pingreply=reply('ping',$server);
252: &reconlonc("$perlvar{'lonSockDir'}/$server");
253: my $pongreply=reply('pong',$server);
254: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
255: $answer=reply($cmd,$server);
256: if ($answer eq 'con_lost') {
257: my $now=time;
258: my $middlename=$cmd;
259: $middlename=substr($middlename,0,16);
260: $middlename=~s/\W//g;
261: my $dfilename=
262: "$perlvar{'lonSockDir'}/delayed/$now.$middlename.$server";
263: {
264: my $dfh;
265: if ($dfh=Apache::File->new(">$dfilename")) {
266: print $dfh "$cmd\n";
267: }
268: }
269: sleep 2;
270: my $wcmd='';
271: {
272: my $dfh;
273: if ($dfh=Apache::File->new("$dfilename")) {
274: $wcmd=<$dfh>;
275: }
276: }
277: chomp($wcmd);
278: if ($wcmd eq $cmd) {
279: &logthis("<font color=blue>WARNING: ".
280: "Connection buffer $dfilename: $cmd</font>");
281: &logperm("D:$server:$cmd");
282: return 'con_delayed';
283: } else {
284: &logthis("<font color=red>CRITICAL:"
285: ." Critical connection failed: $server $cmd</font>");
286: &logperm("F:$server:$cmd");
287: return 'con_failed';
288: }
289: }
290: }
291: return $answer;
292: }
293:
294: # ---------------------------------------------------------- Append Environment
295:
296: sub appenv {
297: my %newenv=@_;
298: map {
299: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
300: &logthis("<font color=blue>WARNING: ".
301: "Attempt to modify environment ".$_." to ".$newenv{$_}
302: .'</font>');
303: delete($newenv{$_});
304: } else {
305: $ENV{$_}=$newenv{$_};
306: }
307: } keys %newenv;
308:
309: my $lockfh;
310: unless ($lockfh=Apache::File->new("$ENV{'user.environment'}")) {
311: return 'error: '.$!;
312: }
313: unless (flock($lockfh,LOCK_EX)) {
314: &logthis("<font color=blue>WARNING: ".
315: 'Could not obtain exclusive lock in appenv: '.$!);
316: $lockfh->close();
317: return 'error: '.$!;
318: }
319:
320: my @oldenv;
321: {
322: my $fh;
323: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
324: return 'error: '.$!;
325: }
326: @oldenv=<$fh>;
327: $fh->close();
328: }
329: for (my $i=0; $i<=$#oldenv; $i++) {
330: chomp($oldenv[$i]);
331: if ($oldenv[$i] ne '') {
332: my ($name,$value)=split(/=/,$oldenv[$i]);
333: unless (defined($newenv{$name})) {
334: $newenv{$name}=$value;
335: }
336: }
337: }
338: {
339: my $fh;
340: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
341: return 'error';
342: }
343: my $newname;
344: foreach $newname (keys %newenv) {
345: print $fh "$newname=$newenv{$newname}\n";
346: }
347: $fh->close();
348: }
349:
350: $lockfh->close();
351: return 'ok';
352: }
353: # ----------------------------------------------------- Delete from Environment
354:
355: sub delenv {
356: my $delthis=shift;
357: my %newenv=();
358: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
359: &logthis("<font color=blue>WARNING: ".
360: "Attempt to delete from environment ".$delthis);
361: return 'error';
362: }
363: my @oldenv;
364: {
365: my $fh;
366: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
367: return 'error';
368: }
369: unless (flock($fh,LOCK_SH)) {
370: &logthis("<font color=blue>WARNING: ".
371: 'Could not obtain shared lock in delenv: '.$!);
372: $fh->close();
373: return 'error: '.$!;
374: }
375: @oldenv=<$fh>;
376: $fh->close();
377: }
378: {
379: my $fh;
380: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
381: return 'error';
382: }
383: unless (flock($fh,LOCK_EX)) {
384: &logthis("<font color=blue>WARNING: ".
385: 'Could not obtain exclusive lock in delenv: '.$!);
386: $fh->close();
387: return 'error: '.$!;
388: }
389: map {
390: unless ($_=~/^$delthis/) { print $fh $_; }
391: } @oldenv;
392: $fh->close();
393: }
394: return 'ok';
395: }
396:
397: # ------------------------------ Find server with least workload from spare.tab
398:
399: sub spareserver {
400: my $tryserver;
401: my $spareserver='';
402: my $lowestserver=100;
403: foreach $tryserver (keys %spareid) {
404: my $answer=reply('load',$tryserver);
405: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
406: $spareserver="http://$hostname{$tryserver}";
407: $lowestserver=$answer;
408: }
409: }
410: return $spareserver;
411: }
412:
413: # ----------------------- Try to determine user's current authentication scheme
414:
415: sub queryauthenticate {
416: my ($uname,$udom)=@_;
417: if (($perlvar{'lonRole'} eq 'library') &&
418: ($udom eq $perlvar{'lonDefDomain'})) {
419: my $answer=reply("encrypt:currentauth:$udom:$uname",
420: $perlvar{'lonHostID'});
421: unless ($answer eq 'unknown_user' or $answer eq 'refused') {
422: if (length($answer)) {
423: return $answer;
424: }
425: else {
426: &logthis("User $uname at $udom lacks an authentication mechanism");
427: return 'no_host';
428: }
429: }
430: }
431:
432: my $tryserver;
433: foreach $tryserver (keys %libserv) {
434: if ($hostdom{$tryserver} eq $udom) {
435: my $answer=reply("encrypt:currentauth:$udom:$uname",$tryserver);
436: unless ($answer eq 'unknown_user' or $answer eq 'refused') {
437: if (length($answer)) {
438: return $answer;
439: }
440: else {
441: &logthis("User $uname at $udom lacks an authentication mechanism");
442: return 'no_host';
443: }
444: }
445: }
446: }
447: &logthis("User $uname at $udom lacks an authentication mechanism");
448: return 'no_host';
449: }
450:
451: # --------- Try to authenticate user from domain's lib servers (first this one)
452:
453: sub authenticate {
454: my ($uname,$upass,$udom)=@_;
455: $upass=escape($upass);
456: if (($perlvar{'lonRole'} eq 'library') &&
457: ($udom eq $perlvar{'lonDefDomain'})) {
458: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$perlvar{'lonHostID'});
459: if ($answer =~ /authorized/) {
460: if ($answer eq 'authorized') {
461: &logthis("User $uname at $udom authorized by local server");
462: return $perlvar{'lonHostID'};
463: }
464: if ($answer eq 'non_authorized') {
465: &logthis("User $uname at $udom rejected by local server");
466: return 'no_host';
467: }
468: }
469: }
470:
471: my $tryserver;
472: foreach $tryserver (keys %libserv) {
473: if ($hostdom{$tryserver} eq $udom) {
474: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$tryserver);
475: if ($answer =~ /authorized/) {
476: if ($answer eq 'authorized') {
477: &logthis("User $uname at $udom authorized by $tryserver");
478: return $tryserver;
479: }
480: if ($answer eq 'non_authorized') {
481: &logthis("User $uname at $udom rejected by $tryserver");
482: return 'no_host';
483: }
484: }
485: }
486: }
487: &logthis("User $uname at $udom could not be authenticated");
488: return 'no_host';
489: }
490:
491: # ---------------------- Find the homebase for a user from domain's lib servers
492:
493: sub homeserver {
494: my ($uname,$udom)=@_;
495:
496: my $index="$uname:$udom";
497: if ($homecache{$index}) { return "$homecache{$index}"; }
498:
499: my $tryserver;
500: foreach $tryserver (keys %libserv) {
501: if ($hostdom{$tryserver} eq $udom) {
502: my $answer=reply("home:$udom:$uname",$tryserver);
503: if ($answer eq 'found') {
504: $homecache{$index}=$tryserver;
505: return $tryserver;
506: }
507: }
508: }
509: return 'no_host';
510: }
511:
512: # ------------------------------------- Find the usernames behind a list of IDs
513:
514: sub idget {
515: my ($udom,@ids)=@_;
516: my %returnhash=();
517:
518: my $tryserver;
519: foreach $tryserver (keys %libserv) {
520: if ($hostdom{$tryserver} eq $udom) {
521: my $idlist=join('&',@ids);
522: $idlist=~tr/A-Z/a-z/;
523: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
524: my @answer=();
525: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
526: @answer=split(/\&/,$reply);
527: } ;
528: my $i;
529: for ($i=0;$i<=$#ids;$i++) {
530: if ($answer[$i]) {
531: $returnhash{$ids[$i]}=$answer[$i];
532: }
533: }
534: }
535: }
536: return %returnhash;
537: }
538:
539: # ------------------------------------- Find the IDs behind a list of usernames
540:
541: sub idrget {
542: my ($udom,@unames)=@_;
543: my %returnhash=();
544: map {
545: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
546: } @unames;
547: return %returnhash;
548: }
549:
550: # ------------------------------- Store away a list of names and associated IDs
551:
552: sub idput {
553: my ($udom,%ids)=@_;
554: my %servers=();
555: map {
556: my $uhom=&homeserver($_,$udom);
557: if ($uhom ne 'no_host') {
558: my $id=&escape($ids{$_});
559: $id=~tr/A-Z/a-z/;
560: my $unam=&escape($_);
561: if ($servers{$uhom}) {
562: $servers{$uhom}.='&'.$id.'='.$unam;
563: } else {
564: $servers{$uhom}=$id.'='.$unam;
565: }
566: &critical('put:'.$udom.':'.$unam.':environment:id='.$id,$uhom);
567: }
568: } keys %ids;
569: map {
570: &critical('idput:'.$udom.':'.$servers{$_},$_);
571: } keys %servers;
572: }
573:
574: # ------------------------------------- Find the section of student in a course
575:
576: sub usection {
577: my ($udom,$unam,$courseid)=@_;
578: $courseid=~s/\_/\//g;
579: $courseid=~s/^(\w)/\/$1/;
580: map {
581: my ($key,$value)=split(/\=/,$_);
582: $key=&unescape($key);
583: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
584: my $section=$1;
585: if ($key eq $courseid.'_st') { $section=''; }
586: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
587: my $now=time;
588: my $notactive=0;
589: if ($start) {
590: if ($now<$start) { $notactive=1; }
591: }
592: if ($end) {
593: if ($now>$end) { $notactive=1; }
594: }
595: unless ($notactive) { return $section; }
596: }
597: } split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
598: &homeserver($unam,$udom)));
599: return '-1';
600: }
601:
602: # ------------------------------------- Read an entry from a user's environment
603:
604: sub userenvironment {
605: my ($udom,$unam,@what)=@_;
606: my %returnhash=();
607: my @answer=split(/\&/,
608: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
609: &homeserver($unam,$udom)));
610: my $i;
611: for ($i=0;$i<=$#what;$i++) {
612: $returnhash{$what[$i]}=&unescape($answer[$i]);
613: }
614: return %returnhash;
615: }
616:
617: # ----------------------------- Subscribe to a resource, return URL if possible
618:
619: sub subscribe {
620: my $fname=shift;
621: my $author=$fname;
622: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
623: my ($udom,$uname)=split(/\//,$author);
624: my $home=homeserver($uname,$udom);
625: if (($home eq 'no_host') || ($home eq $perlvar{'lonHostID'})) {
626: return 'not_found';
627: }
628: my $answer=reply("sub:$fname",$home);
629: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
630: $answer.=' by '.$home;
631: }
632: return $answer;
633: }
634:
635: # -------------------------------------------------------------- Replicate file
636:
637: sub repcopy {
638: my $filename=shift;
639: $filename=~s/\/+/\//g;
640: my $transname="$filename.in.transfer";
641: if ((-e $filename) || (-e $transname)) { return OK; }
642: my $remoteurl=subscribe($filename);
643: if ($remoteurl =~ /^con_lost by/) {
644: &logthis("Subscribe returned $remoteurl: $filename");
645: return HTTP_SERVICE_UNAVAILABLE;
646: } elsif ($remoteurl eq 'not_found') {
647: &logthis("Subscribe returned not_found: $filename");
648: return HTTP_NOT_FOUND;
649: } elsif ($remoteurl =~ /^rejected by/) {
650: &logthis("Subscribe returned $remoteurl: $filename");
651: return FORBIDDEN;
652: } elsif ($remoteurl eq 'directory') {
653: return OK;
654: } else {
655: my @parts=split(/\//,$filename);
656: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
657: if ($path ne "$perlvar{'lonDocRoot'}/res") {
658: &logthis("Malconfiguration for replication: $filename");
659: return HTTP_BAD_REQUEST;
660: }
661: my $count;
662: for ($count=5;$count<$#parts;$count++) {
663: $path.="/$parts[$count]";
664: if ((-e $path)!=1) {
665: mkdir($path,0777);
666: }
667: }
668: my $ua=new LWP::UserAgent;
669: my $request=new HTTP::Request('GET',"$remoteurl");
670: my $response=$ua->request($request,$transname);
671: if ($response->is_error()) {
672: unlink($transname);
673: my $message=$response->status_line;
674: &logthis("<font color=blue>WARNING:"
675: ." LWP get: $message: $filename</font>");
676: return HTTP_SERVICE_UNAVAILABLE;
677: } else {
678: if ($remoteurl!~/\.meta$/) {
679: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
680: my $mresponse=$ua->request($mrequest,$filename.'.meta');
681: if ($mresponse->is_error()) {
682: unlink($filename.'.meta');
683: &logthis(
684: "<font color=yellow>INFO: No metadata: $filename</font>");
685: }
686: }
687: rename($transname,$filename);
688: return OK;
689: }
690: }
691: }
692:
693: # --------------------------------------------------------- Server Side Include
694:
695: sub ssi {
696:
697: my ($fn,%form)=@_;
698:
699: my $ua=new LWP::UserAgent;
700:
701: my $request;
702:
703: if (%form) {
704: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
705: $request->content(join '&', map { "$_=$form{$_}" } keys %form);
706: } else {
707: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
708: }
709:
710: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
711: my $response=$ua->request($request);
712:
713: return $response->content;
714: }
715:
716: # ------------------------------------------------------------------------- Log
717:
718: sub log {
719: my ($dom,$nam,$hom,$what)=@_;
720: return critical("log:$dom:$nam:$what",$hom);
721: }
722:
723: # ------------------------------------------------------------------ Course Log
724:
725: sub flushcourselogs {
726: &logthis('Flushing course log buffers');
727: map {
728: my $crsid=$_;
729: if (&reply('log:'.$ENV{'course.'.$crsid.'.domain'}.':'.
730: $ENV{'course.'.$crsid.'.num'}.':'.
731: &escape($courselogs{$crsid}),
732: $ENV{'course.'.$crsid.'.home'}) eq 'ok') {
733: delete $courselogs{$crsid};
734: } else {
735: &logthis('Failed to flush log buffer for '.$crsid);
736: if (length($courselogs{$crsid})>40000) {
737: &logthis("<font color=blue>WARNING: Buffer for ".$crsid.
738: " exceeded maximum size, deleting.</font>");
739: delete $courselogs{$crsid};
740: }
741: }
742: } keys %courselogs;
743: }
744:
745: sub courselog {
746: my $what=shift;
747: $what=time.':'.$what;
748: unless ($ENV{'request.course.id'}) { return ''; }
749: if (defined $courselogs{$ENV{'request.course.id'}}) {
750: $courselogs{$ENV{'request.course.id'}}.='&'.$what;
751: } else {
752: $courselogs{$ENV{'request.course.id'}}.=$what;
753: }
754: if (length($courselogs{$ENV{'request.course.id'}})>4048) {
755: &flushcourselogs();
756: }
757: }
758:
759: sub courseacclog {
760: my $fnsymb=shift;
761: unless ($ENV{'request.course.id'}) { return ''; }
762: my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
763: if ($what=~/(problem|exam|quiz|assess|survey|form)$/) {
764: map {
765: if ($_=~/^form\.(.*)/) {
766: $what.=':'.$1.'='.$ENV{$_};
767: }
768: } keys %ENV;
769: }
770: &courselog($what);
771: }
772:
773: # ----------------------------------------------------------- Check out an item
774:
775: sub checkout {
776: my ($symb,$tuname,$tudom,$tcrsid)=@_;
777: my $now=time;
778: my $lonhost=$perlvar{'lonHostID'};
779: my $infostr=&escape(
780: $tuname.'&'.
781: $tudom.'&'.
782: $tcrsid.'&'.
783: $symb.'&'.
784: $now.'&'.$ENV{'REMOTE_ADDR'});
785: my $token=&reply('tmpput:'.$infostr,$lonhost);
786: if ($token=~/^error\:/) {
787: &logthis("<font color=blue>WARNING: ".
788: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
789: "</font>");
790: return '';
791: }
792:
793: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
794: $token=~tr/a-z/A-Z/;
795:
796: my %infohash=('resource.0.outtoken' => $token,
797: 'resource.0.checkouttime' => $now,
798: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
799:
800: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
801: return '';
802: } else {
803: &logthis("<font color=blue>WARNING: ".
804: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
805: "</font>");
806: }
807:
808: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
809: &escape('Checkout '.$infostr.' - '.
810: $token)) ne 'ok') {
811: return '';
812: } else {
813: &logthis("<font color=blue>WARNING: ".
814: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
815: "</font>");
816: }
817: return $token;
818: }
819:
820: # ------------------------------------------------------------ Check in an item
821:
822: sub checkin {
823: my $token=shift;
824: my $now=time;
825: my ($ta,$tb,$lonhost)=split(/\*/,$token);
826: $lonhost=~tr/A-Z/a-z/;
827: my $dtoken=$ta.'_'.$hostip{$lonhost}.'_'.$tb;
828: $dtoken=~s/\W/\_/g;
829: my ($tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
830: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
831:
832: unless (($tuname) && ($tudom)) {
833: &logthis('Check in '.$token.' ('.$dtoken.') failed');
834: return '';
835: }
836:
837: unless (&allowed('mgr',$tcrsid)) {
838: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
839: $ENV{'user.name'}.' - '.$ENV{'user.domain'});
840: return '';
841: }
842:
843: my %infohash=('resource.0.intoken' => $token,
844: 'resource.0.checkintime' => $now,
845: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
846:
847: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
848: return '';
849: }
850:
851: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
852: &escape('Checkin - '.$token)) ne 'ok') {
853: return '';
854: }
855:
856: return ($symb,$tuname,$tudom,$tcrsid);
857: }
858:
859: # --------------------------------------------- Set Expire Date for Spreadsheet
860:
861: sub expirespread {
862: my ($uname,$udom,$stype,$usymb)=@_;
863: my $cid=$ENV{'request.course.id'};
864: if ($cid) {
865: my $now=time;
866: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
867: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
868: $ENV{'course.'.$cid.'.num'}.
869: ':nohist_expirationdates:'.
870: &escape($key).'='.$now,
871: $ENV{'course.'.$cid.'.home'})
872: }
873: return 'ok';
874: }
875:
876: # ----------------------------------------------------- Devalidate Spreadsheets
877:
878: sub devalidate {
879: my $symb=shift;
880: my $cid=$ENV{'request.course.id'};
881: if ($cid) {
882: my $key=$ENV{'user.name'}.':'.$ENV{'user.domain'}.':';
883: my $status=
884: &del('nohist_calculatedsheet',
885: [$key.'studentcalc'],
886: $ENV{'course.'.$cid.'.domain'},
887: $ENV{'course.'.$cid.'.num'})
888: .' '.
889: &del('nohist_calculatedsheets_'.$cid,
890: [$key.'assesscalc:'.$symb]);
891: unless ($status eq 'ok ok') {
892: &logthis('Could not devalidate spreadsheet '.
893: $ENV{'user.name'}.' at '.$ENV{'user.domain'}.' for '.
894: $symb.': '.$status);
895: }
896: }
897: }
898:
899: sub hash2str {
900: my (%hash)=@_;
901: my $result='';
902: map { $result.=escape($_).'='.escape($hash{$_}).'&'; } keys %hash;
903: $result=~s/\&$//;
904: return $result;
905: }
906:
907: sub str2hash {
908: my ($string) = @_;
909: my %returnhash;
910: map {
911: my ($name,$value)=split(/\=/,$_);
912: $returnhash{&unescape($name)}=&unescape($value);
913: } split(/\&/,$string);
914: return %returnhash;
915: }
916:
917: # -------------------------------------------------------------------Temp Store
918:
919: sub tmpreset {
920: my ($symb,$namespace,$domain,$stuname) = @_;
921: if (!$symb) {
922: $symb=&symbread();
923: if (!$symb) { $symb= $ENV{'REQUEST_URI'}; }
924: }
925: $symb=escape($symb);
926:
927: if (!$namespace) { $namespace=$ENV{'request.state'}; }
928: $namespace=~s/\//\_/g;
929: $namespace=~s/\W//g;
930:
931: #FIXME needs to do something for /pub resources
932: if (!$domain) { $domain=$ENV{'user.domain'}; }
933: if (!$stuname) { $stuname=$ENV{'user.name'}; }
934: my $path=$perlvar{'lonDaemons'}.'/tmp';
935: my %hash;
936: if (tie(%hash,'GDBM_File',
937: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
938: &GDBM_WRCREAT,0640)) {
939: foreach my $key (keys %hash) {
940: if ($key=~ /:$symb:/) {
941: delete($hash{$key});
942: }
943: }
944: }
945: }
946:
947: sub tmpstore {
948: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
949:
950: if (!$symb) {
951: $symb=&symbread();
952: if (!$symb) { $symb= $ENV{'request.url'}; }
953: }
954: $symb=escape($symb);
955:
956: if (!$namespace) {
957: # I don't think we would ever want to store this for a course.
958: # it seems this will only be used if we don't have a course.
959: #$namespace=$ENV{'request.course.id'};
960: #if (!$namespace) {
961: $namespace=$ENV{'request.state'};
962: #}
963: }
964: $namespace=~s/\//\_/g;
965: $namespace=~s/\W//g;
966: #FIXME needs to do something for /pub resources
967: if (!$domain) { $domain=$ENV{'user.domain'}; }
968: if (!$stuname) { $stuname=$ENV{'user.name'}; }
969: my $now=time;
970: my %hash;
971: my $path=$perlvar{'lonDaemons'}.'/tmp';
972: if (tie(%hash,'GDBM_File',
973: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
974: &GDBM_WRCREAT,0640)) {
975: $hash{"version:$symb"}++;
976: my $version=$hash{"version:$symb"};
977: my $allkeys='';
978: foreach my $key (keys(%$storehash)) {
979: $allkeys.=$key.':';
980: $hash{"$version:$symb:$key"}=$$storehash{$key};
981: }
982: $hash{"$version:$symb:timestamp"}=$now;
983: $allkeys.='timestamp';
984: $hash{"$version:keys:$symb"}=$allkeys;
985: if (untie(%hash)) {
986: return 'ok';
987: } else {
988: return "error:$!";
989: }
990: } else {
991: return "error:$!";
992: }
993: }
994:
995: # -----------------------------------------------------------------Temp Restore
996:
997: sub tmprestore {
998: my ($symb,$namespace,$domain,$stuname) = @_;
999:
1000: if (!$symb) {
1001: $symb=&symbread();
1002: if (!$symb) { $symb= $ENV{'request.url'}; }
1003: }
1004: $symb=escape($symb);
1005:
1006: if (!$namespace) { $namespace=$ENV{'request.state'}; }
1007: #FIXME needs to do something for /pub resources
1008: if (!$domain) { $domain=$ENV{'user.domain'}; }
1009: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1010:
1011: my %returnhash;
1012: $namespace=~s/\//\_/g;
1013: $namespace=~s/\W//g;
1014: my %hash;
1015: my $path=$perlvar{'lonDaemons'}.'/tmp';
1016: if (tie(%hash,'GDBM_File',
1017: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1018: &GDBM_READER,0640)) {
1019: my $version=$hash{"version:$symb"};
1020: $returnhash{'version'}=$version;
1021: my $scope;
1022: for ($scope=1;$scope<=$version;$scope++) {
1023: my $vkeys=$hash{"$scope:keys:$symb"};
1024: my @keys=split(/:/,$vkeys);
1025: my $key;
1026: $returnhash{"$scope:keys"}=$vkeys;
1027: foreach $key (@keys) {
1028: $returnhash{"$scope:$key"}=$hash{"$scope:$symb:$key"};
1029: $returnhash{"$key"}=$hash{"$scope:$symb:$key"};
1030: }
1031: }
1032: if (!(untie(%hash))) {
1033: return "error:$!";
1034: }
1035: } else {
1036: return "error:$!";
1037: }
1038: return %returnhash;
1039: }
1040:
1041: # ----------------------------------------------------------------------- Store
1042:
1043: sub store {
1044: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
1045: my $home='';
1046:
1047: if ($stuname) { $home=&homeserver($stuname,$domain); }
1048:
1049: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1050:
1051: &devalidate($symb);
1052:
1053: $symb=escape($symb);
1054: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
1055: if (!$domain) { $domain=$ENV{'user.domain'}; }
1056: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1057: if (!$home) { $home=$ENV{'user.home'}; }
1058: my $namevalue='';
1059: map {
1060: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1061: } keys %$storehash;
1062: $namevalue=~s/\&$//;
1063: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1064: }
1065:
1066: # -------------------------------------------------------------- Critical Store
1067:
1068: sub cstore {
1069: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
1070: my $home='';
1071:
1072: if ($stuname) { $home=&homeserver($stuname,$domain); }
1073:
1074: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1075:
1076: &devalidate($symb);
1077:
1078: $symb=escape($symb);
1079: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
1080: if (!$domain) { $domain=$ENV{'user.domain'}; }
1081: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1082: if (!$home) { $home=$ENV{'user.home'}; }
1083:
1084: my $namevalue='';
1085: map {
1086: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1087: } keys %$storehash;
1088: $namevalue=~s/\&$//;
1089: return critical("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1090: }
1091:
1092: # --------------------------------------------------------------------- Restore
1093:
1094: sub restore {
1095: my ($symb,$namespace,$domain,$stuname) = @_;
1096: my $home='';
1097:
1098: if ($stuname) { $home=&homeserver($stuname,$domain); }
1099:
1100: if (!$symb) {
1101: unless ($symb=escape(&symbread())) { return ''; }
1102: } else {
1103: $symb=&escape($symb);
1104: }
1105: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
1106: if (!$domain) { $domain=$ENV{'user.domain'}; }
1107: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1108: if (!$home) { $home=$ENV{'user.home'}; }
1109: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
1110:
1111: my %returnhash=();
1112: map {
1113: my ($name,$value)=split(/\=/,$_);
1114: $returnhash{&unescape($name)}=&unescape($value);
1115: } split(/\&/,$answer);
1116: my $version;
1117: for ($version=1;$version<=$returnhash{'version'};$version++) {
1118: map {
1119: $returnhash{$_}=$returnhash{$version.':'.$_};
1120: } split(/\:/,$returnhash{$version.':keys'});
1121: }
1122: return %returnhash;
1123: }
1124:
1125: # ---------------------------------------------------------- Course Description
1126:
1127: sub coursedescription {
1128: my $courseid=shift;
1129: $courseid=~s/^\///;
1130: $courseid=~s/\_/\//g;
1131: my ($cdomain,$cnum)=split(/\//,$courseid);
1132: my $chome=&homeserver($cnum,$cdomain);
1133: if ($chome ne 'no_host') {
1134: my %returnhash=&dump('environment',$cdomain,$cnum);
1135: if (!exists($returnhash{'con_lost'})) {
1136: my $normalid=$cdomain.'_'.$cnum;
1137: my %envhash=();
1138: $returnhash{'home'}= $chome;
1139: $returnhash{'domain'} = $cdomain;
1140: $returnhash{'num'} = $cnum;
1141: while (my ($name,$value) = each %returnhash) {
1142: $envhash{'course.'.$normalid.'.'.$name}=$value;
1143: }
1144: $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
1145: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1146: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1147: $envhash{'course.'.$normalid.'.last_cache'}=time;
1148: $envhash{'course.'.$normalid.'.home'}=$chome;
1149: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
1150: $envhash{'course.'.$normalid.'.num'}=$cnum;
1151: &appenv(%envhash);
1152: return %returnhash;
1153: }
1154: }
1155: return ();
1156: }
1157:
1158: # -------------------------------------------------------- Get user privileges
1159:
1160: sub rolesinit {
1161: my ($domain,$username,$authhost)=@_;
1162: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1163: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1164: my %allroles=();
1165: my %thesepriv=();
1166: my $now=time;
1167: my $userroles="user.login.time=$now\n";
1168: my $thesestr;
1169:
1170: if ($rolesdump ne '') {
1171: map {
1172: if ($_!~/^rolesdef\&/) {
1173: my ($area,$role)=split(/=/,$_);
1174: $area=~s/\_\w\w$//;
1175: my ($trole,$tend,$tstart)=split(/_/,$role);
1176: $userroles.='user.role.'.$trole.'.'.$area.'='.
1177: $tstart.'.'.$tend."\n";
1178: if ($tend!=0) {
1179: if ($tend<$now) {
1180: $trole='';
1181: }
1182: }
1183: if ($tstart!=0) {
1184: if ($tstart>$now) {
1185: $trole='';
1186: }
1187: }
1188: if (($area ne '') && ($trole ne '')) {
1189: my $spec=$trole.'.'.$area;
1190: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
1191: if ($trole =~ /^cr\//) {
1192: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
1193: my $homsvr=homeserver($rauthor,$rdomain);
1194: if ($hostname{$homsvr} ne '') {
1195: my $roledef=
1196: reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
1197: $homsvr);
1198: if (($roledef ne 'con_lost') && ($roledef ne '')) {
1199: my ($syspriv,$dompriv,$coursepriv)=
1200: split(/\_/,unescape($roledef));
1201: $allroles{'cm./'}.=':'.$syspriv;
1202: $allroles{$spec.'./'}.=':'.$syspriv;
1203: if ($tdomain ne '') {
1204: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
1205: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
1206: if ($trest ne '') {
1207: $allroles{'cm.'.$area}.=':'.$coursepriv;
1208: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
1209: }
1210: }
1211: }
1212: }
1213: } else {
1214: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
1215: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
1216: if ($tdomain ne '') {
1217: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1218: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1219: if ($trest ne '') {
1220: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
1221: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
1222: }
1223: }
1224: }
1225: }
1226: }
1227: } split(/&/,$rolesdump);
1228: my $adv=0;
1229: my $author=0;
1230: map {
1231: %thesepriv=();
1232: if (($_!~/^st/) && ($_!~/^ta/) && ($_!~/^cm/)) { $adv=1; }
1233: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
1234: map {
1235: if ($_ ne '') {
1236: my ($privilege,$restrictions)=split(/&/,$_);
1237: if ($restrictions eq '') {
1238: $thesepriv{$privilege}='F';
1239: } else {
1240: if ($thesepriv{$privilege} ne 'F') {
1241: $thesepriv{$privilege}.=$restrictions;
1242: }
1243: }
1244: }
1245: } split(/:/,$allroles{$_});
1246: $thesestr='';
1247: map { $thesestr.=':'.$_.'&'.$thesepriv{$_}; } keys %thesepriv;
1248: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
1249: } keys %allroles;
1250: $userroles.='user.adv='.$adv."\n".
1251: 'user.author='.$author."\n";
1252: $ENV{'user.adv'}=$adv;
1253: }
1254: return $userroles;
1255: }
1256:
1257: # --------------------------------------------------------------- get interface
1258:
1259: sub get {
1260: my ($namespace,$storearr,$udomain,$uname)=@_;
1261: my $items='';
1262: map {
1263: $items.=escape($_).'&';
1264: } @$storearr;
1265: $items=~s/\&$//;
1266: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1267: if (!$uname) { $uname=$ENV{'user.name'}; }
1268: my $uhome=&homeserver($uname,$udomain);
1269:
1270: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1271: my @pairs=split(/\&/,$rep);
1272: my %returnhash=();
1273: my $i=0;
1274: map {
1275: $returnhash{$_}=unescape($pairs[$i]);
1276: $i++;
1277: } @$storearr;
1278: return %returnhash;
1279: }
1280:
1281: # --------------------------------------------------------------- del interface
1282:
1283: sub del {
1284: my ($namespace,$storearr,$udomain,$uname)=@_;
1285: my $items='';
1286: map {
1287: $items.=escape($_).'&';
1288: } @$storearr;
1289: $items=~s/\&$//;
1290: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1291: if (!$uname) { $uname=$ENV{'user.name'}; }
1292: my $uhome=&homeserver($uname,$udomain);
1293:
1294: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1295: }
1296:
1297: # -------------------------------------------------------------- dump interface
1298:
1299: sub dump {
1300: my ($namespace,$udomain,$uname)=@_;
1301: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1302: if (!$uname) { $uname=$ENV{'user.name'}; }
1303: my $uhome=&homeserver($uname,$udomain);
1304: my $rep=reply("dump:$udomain:$uname:$namespace",$uhome);
1305: my @pairs=split(/\&/,$rep);
1306: my %returnhash=();
1307: map {
1308: my ($key,$value)=split(/=/,$_);
1309: $returnhash{unescape($key)}=unescape($value);
1310: } @pairs;
1311: return %returnhash;
1312: }
1313:
1314: # --------------------------------------------------------------- put interface
1315:
1316: sub put {
1317: my ($namespace,$storehash,$udomain,$uname)=@_;
1318: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1319: if (!$uname) { $uname=$ENV{'user.name'}; }
1320: my $uhome=&homeserver($uname,$udomain);
1321: my $items='';
1322: map {
1323: $items.=&escape($_).'='.&escape($$storehash{$_}).'&';
1324: } keys %$storehash;
1325: $items=~s/\&$//;
1326: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1327: }
1328:
1329: # ------------------------------------------------------ critical put interface
1330:
1331: sub cput {
1332: my ($namespace,$storehash,$udomain,$uname)=@_;
1333: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1334: if (!$uname) { $uname=$ENV{'user.name'}; }
1335: my $uhome=&homeserver($uname,$udomain);
1336: my $items='';
1337: map {
1338: $items.=escape($_).'='.escape($$storehash{$_}).'&';
1339: } keys %$storehash;
1340: $items=~s/\&$//;
1341: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1342: }
1343:
1344: # -------------------------------------------------------------- eget interface
1345:
1346: sub eget {
1347: my ($namespace,$storearr,$udomain,$uname)=@_;
1348: my $items='';
1349: map {
1350: $items.=escape($_).'&';
1351: } @$storearr;
1352: $items=~s/\&$//;
1353: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1354: if (!$uname) { $uname=$ENV{'user.name'}; }
1355: my $uhome=&homeserver($uname,$udomain);
1356: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1357: my @pairs=split(/\&/,$rep);
1358: my %returnhash=();
1359: my $i=0;
1360: map {
1361: $returnhash{$_}=unescape($pairs[$i]);
1362: $i++;
1363: } @$storearr;
1364: return %returnhash;
1365: }
1366:
1367: # ------------------------------------------------- Check for a user privilege
1368:
1369: sub allowed {
1370: my ($priv,$uri)=@_;
1371:
1372: my $orguri=$uri;
1373: $uri=&declutter($uri);
1374:
1375: # Free bre access to adm and meta resources
1376:
1377: if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1378: return 'F';
1379: }
1380:
1381: # Free bre to public access
1382:
1383: if ($priv eq 'bre') {
1384: if (&metadata($uri,'copyright') eq 'public') { return 'F'; }
1385: }
1386:
1387: my $thisallowed='';
1388: my $statecond=0;
1389: my $courseprivid='';
1390:
1391: # Course
1392:
1393: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/$priv\&([^\:]*)/) {
1394: $thisallowed.=$1;
1395: }
1396:
1397: # Domain
1398:
1399: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1400: =~/$priv\&([^\:]*)/) {
1401: $thisallowed.=$1;
1402: }
1403:
1404: # Course: uri itself is a course
1405: my $courseuri=$uri;
1406: $courseuri=~s/\_(\d)/\/$1/;
1407: $courseuri=~s/^([^\/])/\/$1/;
1408:
1409: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1410: =~/$priv\&([^\:]*)/) {
1411: $thisallowed.=$1;
1412: }
1413:
1414: # Full access at system, domain or course-wide level? Exit.
1415:
1416: if ($thisallowed=~/F/) {
1417: return 'F';
1418: }
1419:
1420: # If this is generating or modifying users, exit with special codes
1421:
1422: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:$priv\:/) {
1423: return $thisallowed;
1424: }
1425: #
1426: # Gathered so far: system, domain and course wide privileges
1427: #
1428: # Course: See if uri or referer is an individual resource that is part of
1429: # the course
1430:
1431: if ($ENV{'request.course.id'}) {
1432: $courseprivid=$ENV{'request.course.id'};
1433: if ($ENV{'request.course.sec'}) {
1434: $courseprivid.='/'.$ENV{'request.course.sec'};
1435: }
1436: $courseprivid=~s/\_/\//;
1437: my $checkreferer=1;
1438: my @uriparts=split(/\//,$uri);
1439: my $filename=$uriparts[$#uriparts];
1440: my $pathname=$uri;
1441: $pathname=~s/\/$filename$//;
1442: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1443: /\&$filename\:([\d\|]+)\&/) {
1444: $statecond=$1;
1445: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1446: =~/$priv\&([^\:]*)/) {
1447: $thisallowed.=$1;
1448: $checkreferer=0;
1449: }
1450: }
1451:
1452: if ($checkreferer) {
1453: my $refuri=$ENV{'httpref.'.$orguri};
1454:
1455: unless ($refuri) {
1456: map {
1457: if ($_=~/^httpref\..*\*/) {
1458: my $pattern=$_;
1459: $pattern=~s/^httpref\.\/res\///;
1460: $pattern=~s/\*/\[\^\/\]\+/g;
1461: $pattern=~s/\//\\\//g;
1462: if ($orguri=~/$pattern/) {
1463: $refuri=$ENV{$_};
1464: }
1465: }
1466: } keys %ENV;
1467: }
1468: if ($refuri) {
1469: $refuri=&declutter($refuri);
1470: my @uriparts=split(/\//,$refuri);
1471: my $filename=$uriparts[$#uriparts];
1472: my $pathname=$refuri;
1473: $pathname=~s/\/$filename$//;
1474: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1475: /\&$filename\:([\d\|]+)\&/) {
1476: my $refstatecond=$1;
1477: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1478: =~/$priv\&([^\:]*)/) {
1479: $thisallowed.=$1;
1480: $uri=$refuri;
1481: $statecond=$refstatecond;
1482: }
1483: }
1484: }
1485: }
1486: }
1487:
1488: #
1489: # Gathered now: all privileges that could apply, and condition number
1490: #
1491: #
1492: # Full or no access?
1493: #
1494:
1495: if ($thisallowed=~/F/) {
1496: return 'F';
1497: }
1498:
1499: unless ($thisallowed) {
1500: return '';
1501: }
1502:
1503: # Restrictions exist, deal with them
1504: #
1505: # C:according to course preferences
1506: # R:according to resource settings
1507: # L:unless locked
1508: # X:according to user session state
1509: #
1510:
1511: # Possibly locked functionality, check all courses
1512: # Locks might take effect only after 10 minutes cache expiration for other
1513: # courses, and 2 minutes for current course
1514:
1515: my $envkey;
1516: if ($thisallowed=~/L/) {
1517: foreach $envkey (keys %ENV) {
1518: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
1519: my $courseid=$2;
1520: my $roleid=$1.'.'.$2;
1521: $courseid=~s/^\///;
1522: my $expiretime=600;
1523: if ($ENV{'request.role'} eq $roleid) {
1524: $expiretime=120;
1525: }
1526: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
1527: my $prefix='course.'.$cdom.'_'.$cnum.'.';
1528: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
1529: &coursedescription($courseid);
1530: }
1531: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,$csec\,/)
1532: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
1533: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1534: &log($ENV{'user.domain'},$ENV{'user.name'},
1535: $ENV{'user.host'},
1536: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1537: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1538: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1539: return '';
1540: }
1541: }
1542: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/)
1543: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
1544: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1545: &log($ENV{'user.domain'},$ENV{'user.name'},
1546: $ENV{'user.host'},
1547: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1548: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1549: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1550: return '';
1551: }
1552: }
1553: }
1554: }
1555: }
1556:
1557: #
1558: # Rest of the restrictions depend on selected course
1559: #
1560:
1561: unless ($ENV{'request.course.id'}) {
1562: return '1';
1563: }
1564:
1565: #
1566: # Now user is definitely in a course
1567: #
1568:
1569:
1570: # Course preferences
1571:
1572: if ($thisallowed=~/C/) {
1573: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1574: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1575: =~/\,$rolecode\,/) {
1576: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1577: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1578: $ENV{'request.course.id'});
1579: return '';
1580: }
1581: }
1582:
1583: # Resource preferences
1584:
1585: if ($thisallowed=~/R/) {
1586: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1587: my $filename=$perlvar{'lonDocRoot'}.'/res/'.$uri.'.meta';
1588: if (-e $filename) {
1589: my @content;
1590: {
1591: my $fh=Apache::File->new($filename);
1592: @content=<$fh>;
1593: }
1594: if (join('',@content)=~
1595: /\<roledeny[^\>]*\>[^\<]*$rolecode[^\<]*\<\/roledeny\>/) {
1596: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1597: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1598: return '';
1599:
1600: }
1601: }
1602: }
1603:
1604: # Restricted by state?
1605:
1606: if ($thisallowed=~/X/) {
1607: if (&condval($statecond)) {
1608: return '2';
1609: } else {
1610: return '';
1611: }
1612: }
1613:
1614: return 'F';
1615: }
1616:
1617: # ----------------------------------------------------------------- Define Role
1618:
1619: sub definerole {
1620: if (allowed('mcr','/')) {
1621: my ($rolename,$sysrole,$domrole,$courole)=@_;
1622: map {
1623: my ($crole,$cqual)=split(/\&/,$_);
1624: if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
1625: if ($pr{'cr:s'}=~/$crole\&/) {
1626: if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
1627: return "refused:s:$crole&$cqual";
1628: }
1629: }
1630: } split('/',$sysrole);
1631: map {
1632: my ($crole,$cqual)=split(/\&/,$_);
1633: if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
1634: if ($pr{'cr:d'}=~/$crole\&/) {
1635: if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
1636: return "refused:d:$crole&$cqual";
1637: }
1638: }
1639: } split('/',$domrole);
1640: map {
1641: my ($crole,$cqual)=split(/\&/,$_);
1642: if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
1643: if ($pr{'cr:c'}=~/$crole\&/) {
1644: if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
1645: return "refused:c:$crole&$cqual";
1646: }
1647: }
1648: } split('/',$courole);
1649: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1650: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1651: "rolesdef_$rolename=".
1652: escape($sysrole.'_'.$domrole.'_'.$courole);
1653: return reply($command,$ENV{'user.home'});
1654: } else {
1655: return 'refused';
1656: }
1657: }
1658:
1659: # ---------------- Make a metadata query against the network of library servers
1660:
1661: sub metadata_query {
1662: my ($query,$custom,$customshow)=@_;
1663: # need to put in a library server loop here and return a hash
1664: my %rhash;
1665: for my $server (keys %libserv) {
1666: unless ($custom or $customshow) {
1667: my $reply=&reply("querysend:".&escape($query),$server);
1668: $rhash{$server}=$reply;
1669: }
1670: else {
1671: my $reply=&reply("querysend:".&escape($query).':'.
1672: &escape($custom).':'.&escape($customshow),
1673: $server);
1674: $rhash{$server}=$reply;
1675: }
1676: }
1677: return \%rhash;
1678: }
1679:
1680: # ------------------------------------------------------------------ Plain Text
1681:
1682: sub plaintext {
1683: my $short=shift;
1684: return $prp{$short};
1685: }
1686:
1687: # ------------------------------------------------------------------ Plain Text
1688:
1689: sub fileembstyle {
1690: my $ending=shift;
1691: return $fe{$ending};
1692: }
1693:
1694: # ------------------------------------------------------------ Description Text
1695:
1696: sub filedescription {
1697: my $ending=shift;
1698: return $fd{$ending};
1699: }
1700:
1701: # ----------------------------------------------------------------- Assign Role
1702:
1703: sub assignrole {
1704: my ($udom,$uname,$url,$role,$end,$start)=@_;
1705: my $mrole;
1706: if ($role =~ /^cr\//) {
1707: unless (&allowed('ccr',$url)) {
1708: &logthis('Refused custom assignrole: '.
1709: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1710: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1711: return 'refused';
1712: }
1713: $mrole='cr';
1714: } else {
1715: my $cwosec=$url;
1716: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1717: unless (&allowed('c'.$role,$cwosec)) {
1718: &logthis('Refused assignrole: '.
1719: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1720: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1721: return 'refused';
1722: }
1723: $mrole=$role;
1724: }
1725: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1726: "$udom:$uname:$url".'_'."$mrole=$role";
1727: if ($end) { $command.='_'.$end; }
1728: if ($start) {
1729: if ($end) {
1730: $command.='_'.$start;
1731: } else {
1732: $command.='_0_'.$start;
1733: }
1734: }
1735: return &reply($command,&homeserver($uname,$udom));
1736: }
1737:
1738: # -------------------------------------------------- Modify user authentication
1739: sub modifyuserauth {
1740: my ($udom,$uname,$umode,$upass)=@_;
1741: my $uhome=&homeserver($uname,$udom);
1742: &logthis('Call to modify user authentication'.$udom.', '.$uname.', '.
1743: $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'});
1744: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
1745: &escape($upass),$uhome);
1746: unless ($reply eq 'ok') {
1747: return 'error: '.$reply;
1748: }
1749: return 'ok';
1750: }
1751:
1752: # --------------------------------------------------------------- Modify a user
1753:
1754:
1755: sub modifyuser {
1756: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene)=@_;
1757: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1758: $umode.', '.$first.', '.$middle.', '.
1759: $last.', '.$gene.' by '.
1760: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1761: my $uhome=&homeserver($uname,$udom);
1762: # ----------------------------------------------------------------- Create User
1763: if (($uhome eq 'no_host') && ($umode) && ($upass)) {
1764: my $unhome='';
1765: if ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1766: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1767: } else {
1768: my $tryserver;
1769: my $loadm=10000000;
1770: foreach $tryserver (keys %libserv) {
1771: if ($hostdom{$tryserver} eq $udom) {
1772: my $answer=reply('load',$tryserver);
1773: if (($answer=~/\d+/) && ($answer<$loadm)) {
1774: $loadm=$answer;
1775: $unhome=$tryserver;
1776: }
1777: }
1778: }
1779: }
1780: if (($unhome eq '') || ($unhome eq 'no_host')) {
1781: return 'error: find home';
1782: }
1783: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
1784: &escape($upass),$unhome);
1785: unless ($reply eq 'ok') {
1786: return 'error: '.$reply;
1787: }
1788: $uhome=&homeserver($uname,$udom);
1789: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1790: return 'error: verify home';
1791: }
1792: }
1793: # ---------------------------------------------------------------------- Add ID
1794: if ($uid) {
1795: $uid=~tr/A-Z/a-z/;
1796: my %uidhash=&idrget($udom,$uname);
1797: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)) {
1798: unless ($uid eq $uidhash{$uname}) {
1799: return 'error: mismatch '.$uidhash{$uname}.' versus '.$uid;
1800: }
1801: } else {
1802: &idput($udom,($uname => $uid));
1803: }
1804: }
1805: # -------------------------------------------------------------- Add names, etc
1806: my %names=&get('environment',
1807: ['firstname','middlename','lastname','generation'],
1808: $udom,$uname);
1809: if ($first) { $names{'firstname'} = $first; }
1810: if ($middle) { $names{'middlename'} = $middle; }
1811: if ($last) { $names{'lastname'} = $last; }
1812: if ($gene) { $names{'generation'} = $gene; }
1813: my $reply = &put('environment', \%names, $udom,$uname);
1814: if ($reply ne 'ok') { return 'error: '.$reply; }
1815: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1816: $umode.', '.$first.', '.$middle.', '.
1817: $last.', '.$gene.' by '.
1818: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1819: return 'ok';
1820: }
1821:
1822: # -------------------------------------------------------------- Modify student
1823:
1824: sub modifystudent {
1825: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1826: $end,$start)=@_;
1827: my $cid='';
1828: unless ($cid=$ENV{'request.course.id'}) {
1829: return 'not_in_class';
1830: }
1831: # --------------------------------------------------------------- Make the user
1832: my $reply=&modifyuser
1833: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene);
1834: unless ($reply eq 'ok') { return $reply; }
1835: my $uhome=&homeserver($uname,$udom);
1836: if (($uhome eq '') || ($uhome eq 'no_host')) {
1837: return 'error: no such user';
1838: }
1839: # -------------------------------------------------- Add student to course list
1840: $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1841: $ENV{'course.'.$cid.'.num'}.':classlist:'.
1842: &escape($uname.':'.$udom).'='.
1843: &escape($end.':'.$start),
1844: $ENV{'course.'.$cid.'.home'});
1845: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
1846: return 'error: '.$reply;
1847: }
1848: # ---------------------------------------------------- Add student role to user
1849: my $uurl='/'.$cid;
1850: $uurl=~s/\_/\//g;
1851: if ($usec) {
1852: $uurl.='/'.$usec;
1853: }
1854: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1855: }
1856:
1857: # ------------------------------------------------- Write to course preferences
1858:
1859: sub writecoursepref {
1860: my ($courseid,%prefs)=@_;
1861: $courseid=~s/^\///;
1862: $courseid=~s/\_/\//g;
1863: my ($cdomain,$cnum)=split(/\//,$courseid);
1864: my $chome=homeserver($cnum,$cdomain);
1865: if (($chome eq '') || ($chome eq 'no_host')) {
1866: return 'error: no such course';
1867: }
1868: my $cstring='';
1869: map {
1870: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1871: } keys %prefs;
1872: $cstring=~s/\&$//;
1873: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
1874: }
1875:
1876: # ---------------------------------------------------------- Make/modify course
1877:
1878: sub createcourse {
1879: my ($udom,$description,$url)=@_;
1880: $url=&declutter($url);
1881: my $cid='';
1882: unless (&allowed('ccc',$ENV{'user.domain'})) {
1883: return 'refused';
1884: }
1885: unless ($udom eq $ENV{'user.domain'}) {
1886: return 'refused';
1887: }
1888: # ------------------------------------------------------------------- Create ID
1889: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1890: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1891: # ----------------------------------------------- Make sure that does not exist
1892: my $uhome=&homeserver($uname,$udom);
1893: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1894: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1895: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1896: $uhome=&homeserver($uname,$udom);
1897: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1898: return 'error: unable to generate unique course-ID';
1899: }
1900: }
1901: # ------------------------------------------------------------- Make the course
1902: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1903: $ENV{'user.home'});
1904: unless ($reply eq 'ok') { return 'error: '.$reply; }
1905: $uhome=&homeserver($uname,$udom);
1906: if (($uhome eq '') || ($uhome eq 'no_host')) {
1907: return 'error: no such course';
1908: }
1909: &writecoursepref($udom.'_'.$uname,
1910: ('description' => $description,
1911: 'url' => $url));
1912: return '/'.$udom.'/'.$uname;
1913: }
1914:
1915: # ---------------------------------------------------------- Assign Custom Role
1916:
1917: sub assigncustomrole {
1918: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
1919: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1920: $end,$start);
1921: }
1922:
1923: # ----------------------------------------------------------------- Revoke Role
1924:
1925: sub revokerole {
1926: my ($udom,$uname,$url,$role)=@_;
1927: my $now=time;
1928: return &assignrole($udom,$uname,$url,$role,$now);
1929: }
1930:
1931: # ---------------------------------------------------------- Revoke Custom Role
1932:
1933: sub revokecustomrole {
1934: my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
1935: my $now=time;
1936: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
1937: }
1938:
1939: # ------------------------------------------------------------ Directory lister
1940:
1941: sub dirlist {
1942: my $uri=shift;
1943: $uri=~s/^\///;
1944: $uri=~s/\/$//;
1945: my ($res,$udom,$uname,@rest)=split(/\//,$uri);
1946: if ($udom) {
1947: if ($uname) {
1948: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
1949: homeserver($uname,$udom));
1950: return split(/:/,$listing);
1951: } else {
1952: my $tryserver;
1953: my %allusers=();
1954: foreach $tryserver (keys %libserv) {
1955: if ($hostdom{$tryserver} eq $udom) {
1956: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
1957: $tryserver);
1958: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
1959: && ($listing ne 'con_lost')) {
1960: map {
1961: my ($entry,@stat)=split(/&/,$_);
1962: $allusers{$entry}=1;
1963: } split(/:/,$listing);
1964: }
1965: }
1966: }
1967: my $alluserstr='';
1968: map {
1969: $alluserstr.=$_.'&user:';
1970: } sort keys %allusers;
1971: $alluserstr=~s/:$//;
1972: return split(/:/,$alluserstr);
1973: }
1974: } else {
1975: my $tryserver;
1976: my %alldom=();
1977: foreach $tryserver (keys %libserv) {
1978: $alldom{$hostdom{$tryserver}}=1;
1979: }
1980: my $alldomstr='';
1981: map {
1982: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
1983: } sort keys %alldom;
1984: $alldomstr=~s/:$//;
1985: return split(/:/,$alldomstr);
1986: }
1987: }
1988:
1989: # -------------------------------------------------------- Value of a Condition
1990:
1991: sub directcondval {
1992: my $number=shift;
1993: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
1994: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
1995: } else {
1996: return 2;
1997: }
1998: }
1999:
2000: sub condval {
2001: my $condidx=shift;
2002: my $result=0;
2003: my $allpathcond='';
2004: map {
2005: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
2006: $allpathcond.=
2007: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
2008: }
2009: } split(/\|/,$condidx);
2010: $allpathcond=~s/\|$//;
2011: if ($ENV{'request.course.id'}) {
2012: if ($allpathcond) {
2013: my $operand='|';
2014: my @stack;
2015: map {
2016: if ($_ eq '(') {
2017: push @stack,($operand,$result)
2018: } elsif ($_ eq ')') {
2019: my $before=pop @stack;
2020: if (pop @stack eq '&') {
2021: $result=$result>$before?$before:$result;
2022: } else {
2023: $result=$result>$before?$result:$before;
2024: }
2025: } elsif (($_ eq '&') || ($_ eq '|')) {
2026: $operand=$_;
2027: } else {
2028: my $new=directcondval($_);
2029: if ($operand eq '&') {
2030: $result=$result>$new?$new:$result;
2031: } else {
2032: $result=$result>$new?$result:$new;
2033: }
2034: }
2035: } ($allpathcond=~/(\d+|\(|\)|\&|\|)/g);
2036: }
2037: }
2038: return $result;
2039: }
2040:
2041: # --------------------------------------------------------- Value of a Variable
2042:
2043: sub EXT {
2044: my ($varname,$symbparm)=@_;
2045: unless ($varname) { return ''; }
2046: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
2047: my $rest;
2048: if ($therest[0]) {
2049: $rest=join('.',@therest);
2050: } else {
2051: $rest='';
2052: }
2053: my $qualifierrest=$qualifier;
2054: if ($rest) { $qualifierrest.='.'.$rest; }
2055: my $spacequalifierrest=$space;
2056: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
2057: if ($realm eq 'user') {
2058: # --------------------------------------------------------------- user.resource
2059: if ($space eq 'resource') {
2060: my %restored=&restore();
2061: return $restored{$qualifierrest};
2062: # ----------------------------------------------------------------- user.access
2063: } elsif ($space eq 'access') {
2064: return &allowed($qualifier,$rest);
2065: # ------------------------------------------ user.preferences, user.environment
2066: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
2067: return $ENV{join('.',('environment',$qualifierrest))};
2068: # ----------------------------------------------------------------- user.course
2069: } elsif ($space eq 'course') {
2070: return $ENV{join('.',('request.course',$qualifier))};
2071: # ------------------------------------------------------------------- user.role
2072: } elsif ($space eq 'role') {
2073: my ($role,$where)=split(/\./,$ENV{'request.role'});
2074: if ($qualifier eq 'value') {
2075: return $role;
2076: } elsif ($qualifier eq 'extent') {
2077: return $where;
2078: }
2079: # ----------------------------------------------------------------- user.domain
2080: } elsif ($space eq 'domain') {
2081: return $ENV{'user.domain'};
2082: # ------------------------------------------------------------------- user.name
2083: } elsif ($space eq 'name') {
2084: return $ENV{'user.name'};
2085: # ---------------------------------------------------- Any other user namespace
2086: } else {
2087: my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
2088: my %reply=&get($space,[$item]);
2089: return $reply{$item};
2090: }
2091: } elsif ($realm eq 'request') {
2092: # ------------------------------------------------------------- request.browser
2093: if ($space eq 'browser') {
2094: return $ENV{'browser.'.$qualifier};
2095: # ------------------------------------------------------------ request.filename
2096: } else {
2097: return $ENV{'request.'.$spacequalifierrest};
2098: }
2099: } elsif ($realm eq 'course') {
2100: # ---------------------------------------------------------- course.description
2101: return $ENV{'course.'.$ENV{'request.course.id'}.'.'.
2102: $spacequalifierrest};
2103: } elsif ($realm eq 'resource') {
2104: if ($ENV{'request.course.id'}) {
2105:
2106: # print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
2107:
2108:
2109: # ----------------------------------------------------- Cascading lookup scheme
2110: my $symbp;
2111: if ($symbparm) {
2112: $symbp=$symbparm;
2113: } else {
2114: $symbp=&symbread();
2115: }
2116: my $mapp=(split(/\_\_\_/,$symbp))[0];
2117:
2118: my $symbparm=$symbp.'.'.$spacequalifierrest;
2119: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
2120:
2121: my $seclevel=
2122: $ENV{'request.course.id'}.'.['.
2123: $ENV{'request.course.sec'}.'].'.$spacequalifierrest;
2124: my $seclevelr=
2125: $ENV{'request.course.id'}.'.['.
2126: $ENV{'request.course.sec'}.'].'.$symbparm;
2127: my $seclevelm=
2128: $ENV{'request.course.id'}.'.['.
2129: $ENV{'request.course.sec'}.'].'.$mapparm;
2130:
2131: my $courselevel=
2132: $ENV{'request.course.id'}.'.'.$spacequalifierrest;
2133: my $courselevelr=
2134: $ENV{'request.course.id'}.'.'.$symbparm;
2135: my $courselevelm=
2136: $ENV{'request.course.id'}.'.'.$mapparm;
2137:
2138: # ----------------------------------------------------------- first, check user
2139: my %resourcedata=get('resourcedata',
2140: [$courselevelr,$courselevelm,$courselevel]);
2141: if (($resourcedata{$courselevelr}!~/^error\:/) &&
2142: ($resourcedata{$courselevelr}!~/^con_lost/)) {
2143:
2144: if ($resourcedata{$courselevelr}) {
2145: return $resourcedata{$courselevelr}; }
2146: if ($resourcedata{$courselevelm}) {
2147: return $resourcedata{$courselevelm}; }
2148: if ($resourcedata{$courselevel}) { return $resourcedata{$courselevel}; }
2149:
2150: } else {
2151: if ($resourcedata{$courselevelr}!~/No such file/) {
2152: &logthis("<font color=blue>WARNING:".
2153: " Trying to get resource data for ".$ENV{'user.name'}." at "
2154: .$ENV{'user.domain'}.": ".$resourcedata{$courselevelr}.
2155: "</font>");
2156: }
2157: }
2158:
2159: # -------------------------------------------------------- second, check course
2160:
2161: my $reply=&reply('get:'.
2162: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.':'.
2163: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
2164: ':resourcedata:'.
2165: &escape($seclevelr).'&'.&escape($seclevelm).'&'.&escape($seclevel).'&'.
2166: &escape($courselevelr).'&'.&escape($courselevelm).'&'.&escape($courselevel),
2167: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
2168: if ($reply!~/^error\:/) {
2169: map {
2170: if ($_) { return &unescape($_); }
2171: } split(/\&/,$reply);
2172: }
2173: if (($reply=~/^con_lost/) || ($reply=~/^error\:/)) {
2174: &logthis("<font color=blue>WARNING:".
2175: " Getting ".$reply." asking for ".$varname." for ".
2176: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
2177: ' at '.
2178: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.
2179: ' from '.
2180: $ENV{'course.'.$ENV{'request.course.id'}.'.home'}.
2181: "</font>");
2182: }
2183: # ------------------------------------------------------ third, check map parms
2184: my %parmhash=();
2185: my $thisparm='';
2186: if (tie(%parmhash,'GDBM_File',
2187: $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER,0640)) {
2188: $thisparm=$parmhash{$symbparm};
2189: untie(%parmhash);
2190: }
2191: if ($thisparm) { return $thisparm; }
2192: }
2193:
2194: # --------------------------------------------- last, look in resource metadata
2195:
2196: $spacequalifierrest=~s/\./\_/;
2197: my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest);
2198: if ($metadata) { return $metadata; }
2199: $metadata=&metadata($ENV{'request.filename'},
2200: 'parameter_'.$spacequalifierrest);
2201: if ($metadata) { return $metadata; }
2202:
2203: # ------------------------------------------------------------------ Cascade up
2204:
2205: unless ($space eq '0') {
2206: my ($part,$id)=split(/\_/,$space);
2207: if ($id) {
2208: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
2209: $symbparm);
2210: if ($partgeneral) { return $partgeneral; }
2211: } else {
2212: my $resourcegeneral=&EXT('resource.0.'.$qualifierrest,
2213: $symbparm);
2214: if ($resourcegeneral) { return $resourcegeneral; }
2215: }
2216: }
2217:
2218: # ---------------------------------------------------- Any other user namespace
2219: } elsif ($realm eq 'environment') {
2220: # ----------------------------------------------------------------- environment
2221: return $ENV{'environment.'.$spacequalifierrest};
2222: } elsif ($realm eq 'system') {
2223: # ----------------------------------------------------------------- system.time
2224: if ($space eq 'time') {
2225: return time;
2226: }
2227: }
2228: return '';
2229: }
2230:
2231: # ---------------------------------------------------------------- Get metadata
2232:
2233: sub metadata {
2234: my ($uri,$what)=@_;
2235:
2236: $uri=&declutter($uri);
2237: my $filename=$uri;
2238: $uri=~s/\.meta$//;
2239: unless ($metacache{$uri.':keys'}) {
2240: my %metathesekeys=();
2241: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
2242: my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
2243: my $parser=HTML::TokeParser->new(\$metastring);
2244: my $token;
2245: undef %metathesekeys;
2246: while ($token=$parser->get_token) {
2247: if ($token->[0] eq 'S') {
2248: if (defined($token->[2]->{'package'})) {
2249: my $package=$token->[2]->{'package'};
2250: my $keyroot='';
2251: if (defined($token->[2]->{'part'})) {
2252: $keyroot.='_'.$token->[2]->{'part'};
2253: }
2254: if (defined($token->[2]->{'id'})) {
2255: $keyroot.='_'.$token->[2]->{'id'};
2256: }
2257: if ($metacache{$uri.':packages'}) {
2258: $metacache{$uri.':packages'}.=','.$package.$keyroot;
2259: } else {
2260: $metacache{$uri.':packages'}=$package.$keyroot;
2261: }
2262: map {
2263: if ($_=~/^$package\&/) {
2264: my ($pack,$name,$subp)=split(/\&/,$_);
2265: my $value=$packagetab{$_};
2266: my $part=$keyroot;
2267: $part=~s/^\_//;
2268: if ($subp eq 'display') {
2269: $value.=' [Part: '.$part.']';
2270: }
2271: my $unikey='parameter'.$keyroot.'_'.$name;
2272: $metathesekeys{$unikey}=1;
2273: $metacache{$uri.':'.$unikey.'.part'}=$part;
2274: unless
2275: (defined($metacache{$uri.':'.$unikey.'.'.$subp})) {
2276: $metacache{$uri.':'.$unikey.'.'.$subp}=$value;
2277: }
2278: }
2279: } keys %packagetab;
2280: } else {
2281: my $entry=$token->[1];
2282: my $unikey=$entry;
2283: if (defined($token->[2]->{'part'})) {
2284: $unikey.='_'.$token->[2]->{'part'};
2285: }
2286: if (defined($token->[2]->{'id'})) {
2287: $unikey.='_'.$token->[2]->{'id'};
2288: }
2289: if (defined($token->[2]->{'name'})) {
2290: $unikey.='_'.$token->[2]->{'name'};
2291: }
2292: $metathesekeys{$unikey}=1;
2293: map {
2294: $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_};
2295: } @{$token->[3]};
2296: unless (
2297: $metacache{$uri.':'.$unikey}=$parser->get_text('/'.$entry)
2298: ) { $metacache{$uri.':'.$unikey}=
2299: $metacache{$uri.':'.$unikey.'.default'};
2300: }
2301: }
2302: }
2303: }
2304: $metacache{$uri.':keys'}=join(',',keys %metathesekeys);
2305: }
2306: return $metacache{$uri.':'.$what};
2307: }
2308:
2309: # ------------------------------------------------- Update symbolic store links
2310:
2311: sub symblist {
2312: my ($mapname,%newhash)=@_;
2313: $mapname=declutter($mapname);
2314: my %hash;
2315: if (($ENV{'request.course.fn'}) && (%newhash)) {
2316: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
2317: &GDBM_WRCREAT,0640)) {
2318: map {
2319: $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
2320: } keys %newhash;
2321: if (untie(%hash)) {
2322: return 'ok';
2323: }
2324: }
2325: }
2326: return 'error';
2327: }
2328:
2329: # ------------------------------------------------------ Return symb list entry
2330:
2331: sub symbread {
2332: my $thisfn=shift;
2333: unless ($thisfn) {
2334: $thisfn=$ENV{'request.filename'};
2335: }
2336: $thisfn=declutter($thisfn);
2337: my %hash;
2338: my %bighash;
2339: my $syval='';
2340: if (($ENV{'request.course.fn'}) && ($thisfn)) {
2341: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
2342: &GDBM_READER,0640)) {
2343: $syval=$hash{$thisfn};
2344: untie(%hash);
2345: }
2346: # ---------------------------------------------------------- There was an entry
2347: if ($syval) {
2348: unless ($syval=~/\_\d+$/) {
2349: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
2350: &appenv('request.ambiguous' => $thisfn);
2351: return '';
2352: }
2353: $syval.=$1;
2354: }
2355: } else {
2356: # ------------------------------------------------------- Was not in symb table
2357: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
2358: &GDBM_READER,0640)) {
2359: # ---------------------------------------------- Get ID(s) for current resource
2360: my $ids=$bighash{'ids_/res/'.$thisfn};
2361: unless ($ids) {
2362: $ids=$bighash{'ids_/'.$thisfn};
2363: }
2364: if ($ids) {
2365: # ------------------------------------------------------------------- Has ID(s)
2366: my @possibilities=split(/\,/,$ids);
2367: if ($#possibilities==0) {
2368: # ----------------------------------------------- There is only one possibility
2369: my ($mapid,$resid)=split(/\./,$ids);
2370: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
2371: } else {
2372: # ------------------------------------------ There is more than one possibility
2373: my $realpossible=0;
2374: map {
2375: my $file=$bighash{'src_'.$_};
2376: if (&allowed('bre',$file)) {
2377: my ($mapid,$resid)=split(/\./,$_);
2378: if ($bighash{'map_type_'.$mapid} ne 'page') {
2379: $realpossible++;
2380: $syval=declutter($bighash{'map_id_'.$mapid}).
2381: '___'.$resid;
2382: }
2383: }
2384: } @possibilities;
2385: if ($realpossible!=1) { $syval=''; }
2386: }
2387: }
2388: untie(%bighash)
2389: }
2390: }
2391: if ($syval) {
2392: return $syval.'___'.$thisfn;
2393: }
2394: }
2395: &appenv('request.ambiguous' => $thisfn);
2396: return '';
2397: }
2398:
2399: # ---------------------------------------------------------- Return random seed
2400:
2401: sub numval {
2402: my $txt=shift;
2403: $txt=~tr/A-J/0-9/;
2404: $txt=~tr/a-j/0-9/;
2405: $txt=~tr/K-T/0-9/;
2406: $txt=~tr/k-t/0-9/;
2407: $txt=~tr/U-Z/0-5/;
2408: $txt=~tr/u-z/0-5/;
2409: $txt=~s/\D//g;
2410: return int($txt);
2411: }
2412:
2413: sub rndseed {
2414: my ($symb,$courseid,$domain,$username)=@_;
2415: if (!$symb) {
2416: unless ($symb=&symbread()) { return time; }
2417: }
2418: if (!$courseid) { $courseid=$ENV{'request.course.id'};}
2419: if (!$domain) {$domain=$ENV{'user.domain'};}
2420: if (!$username) {$username=$ENV{'user.name'};}
2421: {
2422: use integer;
2423: my $symbchck=unpack("%32C*",$symb) << 27;
2424: my $symbseed=numval($symb) << 22;
2425: my $namechck=unpack("%32C*",$username) << 17;
2426: my $nameseed=numval($username) << 12;
2427: my $domainseed=unpack("%32C*",$domain) << 7;
2428: my $courseseed=unpack("%32C*",$courseid);
2429: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
2430: #uncommenting these lines can break things!
2431: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
2432: #&Apache::lonxml::debug("rndseed :$num:$symb");
2433: return $num;
2434: }
2435: }
2436:
2437: sub ireceipt {
2438: my ($funame,$fudom,$fucourseid,$fusymb)=@_;
2439: my $cuname=unpack("%32C*",$funame);
2440: my $cudom=unpack("%32C*",$fudom);
2441: my $cucourseid=unpack("%32C*",$fucourseid);
2442: my $cusymb=unpack("%32C*",$fusymb);
2443: my $cunique=unpack("%32C*",$perlvar{'lonReceipt'});
2444: return unpack("%32C*",$perlvar{'lonHostID'}).'-'.
2445: ($cunique%$cuname+
2446: $cunique%$cudom+
2447: $cusymb%$cuname+
2448: $cusymb%$cudom+
2449: $cucourseid%$cuname+
2450: $cucourseid%$cudom);
2451: }
2452:
2453: sub receipt {
2454: return &ireceipt($ENV{'user.name'},$ENV{'user.domain'},
2455: $ENV{'request.course.id'},&symbread());
2456: }
2457:
2458: # ------------------------------------------------------------ Serves up a file
2459: # returns either the contents of the file or a -1
2460: sub getfile {
2461: my $file=shift;
2462: &repcopy($file);
2463: if (! -e $file ) { return -1; };
2464: my $fh=Apache::File->new($file);
2465: my $a='';
2466: while (<$fh>) { $a .=$_; }
2467: return $a
2468: }
2469:
2470: sub filelocation {
2471: my ($dir,$file) = @_;
2472: my $location;
2473: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
2474: if ($file=~m:^/~:) { # is a contruction space reference
2475: $location = $file;
2476: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
2477: } else {
2478: $file=~s/^$perlvar{'lonDocRoot'}//;
2479: $file=~s:^/*res::;
2480: if ( !( $file =~ m:^/:) ) {
2481: $location = $dir. '/'.$file;
2482: } else {
2483: $location = '/home/httpd/html/res'.$file;
2484: }
2485: }
2486: $location=~s://+:/:g; # remove duplicate /
2487: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
2488: return $location;
2489: }
2490:
2491: sub hreflocation {
2492: my ($dir,$file)=@_;
2493: unless (($_=~/^http:\/\//i) || ($_=~/^\//)) {
2494: my $finalpath=filelocation($dir,$file);
2495: $finalpath=~s/^\/home\/httpd\/html//;
2496: return $finalpath;
2497: } else {
2498: return $file;
2499: }
2500: }
2501:
2502: # ------------------------------------------------------------- Declutters URLs
2503:
2504: sub declutter {
2505: my $thisfn=shift;
2506: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
2507: $thisfn=~s/^\///;
2508: $thisfn=~s/^res\///;
2509: return $thisfn;
2510: }
2511:
2512: # -------------------------------------------------------- Escape Special Chars
2513:
2514: sub escape {
2515: my $str=shift;
2516: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
2517: return $str;
2518: }
2519:
2520: # ----------------------------------------------------- Un-Escape Special Chars
2521:
2522: sub unescape {
2523: my $str=shift;
2524: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2525: return $str;
2526: }
2527:
2528: # ================================================================ Main Program
2529:
2530: sub BEGIN {
2531: unless ($readit) {
2532: # ------------------------------------------------------------ Read access.conf
2533: {
2534: my $config=Apache::File->new("/etc/httpd/conf/access.conf");
2535:
2536: while (my $configline=<$config>) {
2537: if ($configline =~ /PerlSetVar/) {
2538: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
2539: chomp($varvalue);
2540: $perlvar{$varname}=$varvalue;
2541: }
2542: }
2543: }
2544:
2545: # ------------------------------------------------------------- Read hosts file
2546: {
2547: my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
2548:
2549: while (my $configline=<$config>) {
2550: chomp($configline);
2551: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
2552: $hostname{$id}=$name;
2553: $hostdom{$id}=$domain;
2554: $hostip{$id}=$ip;
2555: if ($role eq 'library') { $libserv{$id}=$name; }
2556: }
2557: }
2558:
2559: # ------------------------------------------------------ Read spare server file
2560: {
2561: my $config=Apache::File->new("$perlvar{'lonTabDir'}/spare.tab");
2562:
2563: while (my $configline=<$config>) {
2564: chomp($configline);
2565: if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
2566: $spareid{$configline}=1;
2567: }
2568: }
2569: }
2570: # ------------------------------------------------------------ Read permissions
2571: {
2572: my $config=Apache::File->new("$perlvar{'lonTabDir'}/roles.tab");
2573:
2574: while (my $configline=<$config>) {
2575: chomp($configline);
2576: if ($configline) {
2577: my ($role,$perm)=split(/ /,$configline);
2578: if ($perm ne '') { $pr{$role}=$perm; }
2579: }
2580: }
2581: }
2582:
2583: # -------------------------------------------- Read plain texts for permissions
2584: {
2585: my $config=Apache::File->new("$perlvar{'lonTabDir'}/rolesplain.tab");
2586:
2587: while (my $configline=<$config>) {
2588: chomp($configline);
2589: if ($configline) {
2590: my ($short,$plain)=split(/:/,$configline);
2591: if ($plain ne '') { $prp{$short}=$plain; }
2592: }
2593: }
2594: }
2595:
2596: # ---------------------------------------------------------- Read package table
2597: {
2598: my $config=Apache::File->new("$perlvar{'lonTabDir'}/packages.tab");
2599:
2600: while (my $configline=<$config>) {
2601: chomp($configline);
2602: my ($short,$plain)=split(/:/,$configline);
2603: my ($pack,$name)=split(/\&/,$short);
2604: if ($plain ne '') {
2605: $packagetab{$pack.'&'.$name.'&name'}=$name;
2606: $packagetab{$short}=$plain;
2607: }
2608: }
2609: }
2610:
2611: # ------------------------------------------------------------- Read file types
2612: {
2613: my $config=Apache::File->new("$perlvar{'lonTabDir'}/filetypes.tab");
2614:
2615: while (my $configline=<$config>) {
2616: chomp($configline);
2617: my ($ending,$emb,@descr)=split(/\s+/,$configline);
2618: if ($descr[0] ne '') {
2619: $fe{$ending}=$emb;
2620: $fd{$ending}=join(' ',@descr);
2621: }
2622: }
2623: }
2624:
2625: %metacache=();
2626:
2627: $readit='done';
2628: &logtouch();
2629: &logthis('<font color=yellow>INFO: Read configuration</font>');
2630: }
2631: }
2632: 1;
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