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