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: # 11/17 Gerd Kortemeyer
39: #
40: # $Id: lonnet.pm,v 1.172 2001/11/17 18:20:33 www Exp $
41: #
42: ###
43:
44: # Functions for use by content handlers:
45: #
46: # metadata_query(sql-query-string,custom-metadata-regex) :
47: # returns file handle of where sql and
48: # regex results will be stored for query
49: # plaintext(short) : plain text explanation of short term
50: # fileembstyle(ext) : embed style in page for file extension
51: # filedescription(ext) : descriptor text for file extension
52: # allowed(short,url) : returns codes for allowed actions
53: # F: full access
54: # U,I,K: authentication modes (cxx only)
55: # '': forbidden
56: # 1: user needs to choose course
57: # 2: browse allowed
58: # definerole(rolename,sys,dom,cou) : define a custom role rolename
59: # set privileges in format of lonTabs/roles.tab for
60: # system, domain and course level,
61: # assignrole(udom,uname,url,role,end,start) : give a role to a user for the
62: # level given by url. Optional start and end dates
63: # (leave empty string or zero for "no date")
64: # assigncustomrole (udom,uname,url,rdom,rnam,rolename,end,start) : give a
65: # custom role to a user for the level given by url.
66: # Specify name and domain of role author, and role name
67: # revokerole (udom,uname,url,role) : Revoke a role for url
68: # revokecustomrole (udom,uname,url,rdom,rnam,rolename) : Revoke a custom role
69: # appenv(hash) : adds hash to session environment
70: # delenv(varname) : deletes all environment entries starting with varname
71: # store(hashref,symb,courseid,udom,uname)
72: # : stores hash permanently for this url
73: # hashref needs to be given, and should be a \%hashname
74: # the remaining args aren't required and if they aren't
75: # passed or are '' they will be derived from the ENV
76: # cstore(hashref,symb,courseid,udom,uname)
77: # : same as store but uses the critical interface to
78: # guarentee a store
79: # restore(symb,courseid,udom,uname)
80: # : returns hash for this symb, all args are optional
81: # if they aren't given they will be derived from the
82: # current enviroment
83: #
84: #
85: # for the next 6 functions udom and uname are optional
86: # if supplied they use udom as the domain and uname
87: # as the username for the function (supply a courseid
88: # for the uname if you want a course database)
89: # if not supplied it uses %ENV and looks at
90: # user. attribute for the values
91: #
92: # eget(namesp,arrayref,udom,uname)
93: # : returns hash with keys from array reference filled
94: # in from namesp (encrypts the return communication)
95: # get(namesp,arrayref,udom,uname)
96: # : returns hash with keys from array reference filled
97: # in from namesp
98: # dump(namesp,udom,uname) : dumps the complete namespace into a hash
99: # del(namesp,array,udom,uname) : deletes keys out of array from namesp
100: # put(namesp,hash,udom,uname) : stores hash in namesp
101: # cput(namesp,hash,udom,uname) : critical put
102: #
103: #
104: # ssi(url,hash) : does a complete request cycle on url to localhost, posts
105: # hash
106: # coursedescription(id) : returns and caches course description for id
107: # repcopy(filename) : replicate file
108: # dirlist(url) : gets a directory listing
109: # directcondval(index) : reading condition value of single condition from
110: # state string
111: # condval(index) : value of condition index based on state
112: # EXT(name) : value of a variable
113: # symblist(map,hash) : Updates symbolic storage links
114: # symbread([filename]) : returns the data handle (filename optional)
115: # rndseed([symb,courseid,domain,uname])
116: # : returns a random seed, all arguments are optional,
117: # if they aren't sent it use the environment to derive
118: # them
119: # Note: if symb isn't sent and it can't get one from
120: # &symbread it will use the current time as it's return
121: # receipt() : returns a receipt to be given out to users
122: # getfile(filename) : returns the contents of filename, or a -1 if it can't
123: # be found, replicates and subscribes to the file
124: # filelocation(dir,file) : returns a fairly clean absolute reference to file
125: # from the directory dir
126: # hreflocation(dir,file) : same as filelocation, but for hrefs
127: # log(domain,user,home,msg) : write to permanent log for user
128: # usection(domain,user,courseid) : output of section name/number or '' for
129: # "not in course" and '-1' for "no section"
130: # userenvironment(domain,user,what) : puts out any environment parameter
131: # for a user
132: # idput(domain,hash) : writes IDs for users from hash (name=>id,name=>id)
133: # idget(domain,array): returns hash with usernames (id=>name,id=>name) for
134: # an array of IDs
135: # idrget(domain,array): returns hash with IDs for usernames (name=>id,...) for
136: # an array of names
137: # metadata(file,entry): returns the metadata entry for a file. entry='keys'
138: # returns a comma separated list of keys
139: #
140:
141: package Apache::lonnet;
142:
143: use strict;
144: use Apache::File;
145: use LWP::UserAgent();
146: use HTTP::Headers;
147: use vars
148: qw(%perlvar %hostname %homecache %hostip %spareid %hostdom %libserv %pr %prp %fe %fd $readit %metacache %packagetab %courselogs);
149: use IO::Socket;
150: use GDBM_File;
151: use Apache::Constants qw(:common :http);
152: use HTML::TokeParser;
153: use Fcntl qw(:flock);
154:
155: # --------------------------------------------------------------------- Logging
156:
157: sub logtouch {
158: my $execdir=$perlvar{'lonDaemons'};
159: unless (-e "$execdir/logs/lonnet.log") {
160: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
161: close $fh;
162: }
163: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
164: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
165: }
166:
167: sub logthis {
168: my $message=shift;
169: my $execdir=$perlvar{'lonDaemons'};
170: my $now=time;
171: my $local=localtime($now);
172: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
173: print $fh "$local ($$): $message\n";
174: return 1;
175: }
176:
177: sub logperm {
178: my $message=shift;
179: my $execdir=$perlvar{'lonDaemons'};
180: my $now=time;
181: my $local=localtime($now);
182: my $fh=Apache::File->new(">>$execdir/logs/lonnet.perm.log");
183: print $fh "$now:$message:$local\n";
184: return 1;
185: }
186:
187: # -------------------------------------------------- Non-critical communication
188: sub subreply {
189: my ($cmd,$server)=@_;
190: my $peerfile="$perlvar{'lonSockDir'}/$server";
191: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
192: Type => SOCK_STREAM,
193: Timeout => 10)
194: or return "con_lost";
195: print $client "$cmd\n";
196: my $answer=<$client>;
197: if (!$answer) { $answer="con_lost"; }
198: chomp($answer);
199: return $answer;
200: }
201:
202: sub reply {
203: my ($cmd,$server)=@_;
204: my $answer=subreply($cmd,$server);
205: if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
206: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
207: &logthis("<font color=blue>WARNING:".
208: " $cmd to $server returned $answer</font>");
209: }
210: return $answer;
211: }
212:
213: # ----------------------------------------------------------- Send USR1 to lonc
214:
215: sub reconlonc {
216: my $peerfile=shift;
217: &logthis("Trying to reconnect for $peerfile");
218: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
219: if (my $fh=Apache::File->new("$loncfile")) {
220: my $loncpid=<$fh>;
221: chomp($loncpid);
222: if (kill 0 => $loncpid) {
223: &logthis("lonc at pid $loncpid responding, sending USR1");
224: kill USR1 => $loncpid;
225: sleep 1;
226: if (-e "$peerfile") { return; }
227: &logthis("$peerfile still not there, give it another try");
228: sleep 5;
229: if (-e "$peerfile") { return; }
230: &logthis(
231: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
232: } else {
233: &logthis(
234: "<font color=blue>WARNING:".
235: " lonc at pid $loncpid not responding, giving up</font>");
236: }
237: } else {
238: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
239: }
240: }
241:
242: # ------------------------------------------------------ Critical communication
243:
244: sub critical {
245: my ($cmd,$server)=@_;
246: unless ($hostname{$server}) {
247: &logthis("<font color=blue>WARNING:".
248: " Critical message to unknown server ($server)</font>");
249: return 'no_such_host';
250: }
251: my $answer=reply($cmd,$server);
252: if ($answer eq 'con_lost') {
253: my $pingreply=reply('ping',$server);
254: &reconlonc("$perlvar{'lonSockDir'}/$server");
255: my $pongreply=reply('pong',$server);
256: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
257: $answer=reply($cmd,$server);
258: if ($answer eq 'con_lost') {
259: my $now=time;
260: my $middlename=$cmd;
261: $middlename=substr($middlename,0,16);
262: $middlename=~s/\W//g;
263: my $dfilename=
264: "$perlvar{'lonSockDir'}/delayed/$now.$middlename.$server";
265: {
266: my $dfh;
267: if ($dfh=Apache::File->new(">$dfilename")) {
268: print $dfh "$cmd\n";
269: }
270: }
271: sleep 2;
272: my $wcmd='';
273: {
274: my $dfh;
275: if ($dfh=Apache::File->new("$dfilename")) {
276: $wcmd=<$dfh>;
277: }
278: }
279: chomp($wcmd);
280: if ($wcmd eq $cmd) {
281: &logthis("<font color=blue>WARNING: ".
282: "Connection buffer $dfilename: $cmd</font>");
283: &logperm("D:$server:$cmd");
284: return 'con_delayed';
285: } else {
286: &logthis("<font color=red>CRITICAL:"
287: ." Critical connection failed: $server $cmd</font>");
288: &logperm("F:$server:$cmd");
289: return 'con_failed';
290: }
291: }
292: }
293: return $answer;
294: }
295:
296: # ---------------------------------------------------------- Append Environment
297:
298: sub appenv {
299: my %newenv=@_;
300: map {
301: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
302: &logthis("<font color=blue>WARNING: ".
303: "Attempt to modify environment ".$_." to ".$newenv{$_}
304: .'</font>');
305: delete($newenv{$_});
306: } else {
307: $ENV{$_}=$newenv{$_};
308: }
309: } keys %newenv;
310:
311: my $lockfh;
312: unless ($lockfh=Apache::File->new("$ENV{'user.environment'}")) {
313: return 'error: '.$!;
314: }
315: unless (flock($lockfh,LOCK_EX)) {
316: &logthis("<font color=blue>WARNING: ".
317: 'Could not obtain exclusive lock in appenv: '.$!);
318: $lockfh->close();
319: return 'error: '.$!;
320: }
321:
322: my @oldenv;
323: {
324: my $fh;
325: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
326: return 'error: '.$!;
327: }
328: @oldenv=<$fh>;
329: $fh->close();
330: }
331: for (my $i=0; $i<=$#oldenv; $i++) {
332: chomp($oldenv[$i]);
333: if ($oldenv[$i] ne '') {
334: my ($name,$value)=split(/=/,$oldenv[$i]);
335: unless (defined($newenv{$name})) {
336: $newenv{$name}=$value;
337: }
338: }
339: }
340: {
341: my $fh;
342: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
343: return 'error';
344: }
345: my $newname;
346: foreach $newname (keys %newenv) {
347: print $fh "$newname=$newenv{$newname}\n";
348: }
349: $fh->close();
350: }
351:
352: $lockfh->close();
353: return 'ok';
354: }
355: # ----------------------------------------------------- Delete from Environment
356:
357: sub delenv {
358: my $delthis=shift;
359: my %newenv=();
360: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
361: &logthis("<font color=blue>WARNING: ".
362: "Attempt to delete from environment ".$delthis);
363: return 'error';
364: }
365: my @oldenv;
366: {
367: my $fh;
368: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
369: return 'error';
370: }
371: unless (flock($fh,LOCK_SH)) {
372: &logthis("<font color=blue>WARNING: ".
373: 'Could not obtain shared lock in delenv: '.$!);
374: $fh->close();
375: return 'error: '.$!;
376: }
377: @oldenv=<$fh>;
378: $fh->close();
379: }
380: {
381: my $fh;
382: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
383: return 'error';
384: }
385: unless (flock($fh,LOCK_EX)) {
386: &logthis("<font color=blue>WARNING: ".
387: 'Could not obtain exclusive lock in delenv: '.$!);
388: $fh->close();
389: return 'error: '.$!;
390: }
391: map {
392: unless ($_=~/^$delthis/) { print $fh $_; }
393: } @oldenv;
394: $fh->close();
395: }
396: return 'ok';
397: }
398:
399: # ------------------------------ Find server with least workload from spare.tab
400:
401: sub spareserver {
402: my $tryserver;
403: my $spareserver='';
404: my $lowestserver=100;
405: foreach $tryserver (keys %spareid) {
406: my $answer=reply('load',$tryserver);
407: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
408: $spareserver="http://$hostname{$tryserver}";
409: $lowestserver=$answer;
410: }
411: }
412: return $spareserver;
413: }
414:
415: # ----------------------- Try to determine user's current authentication scheme
416:
417: sub queryauthenticate {
418: my ($uname,$udom)=@_;
419: if (($perlvar{'lonRole'} eq 'library') &&
420: ($udom eq $perlvar{'lonDefDomain'})) {
421: my $answer=reply("encrypt:currentauth:$udom:$uname",
422: $perlvar{'lonHostID'});
423: unless ($answer eq 'unknown_user' or $answer eq 'refused') {
424: if (length($answer)) {
425: return $answer;
426: }
427: else {
428: &logthis("User $uname at $udom lacks an authentication mechanism");
429: return 'no_host';
430: }
431: }
432: }
433:
434: my $tryserver;
435: foreach $tryserver (keys %libserv) {
436: if ($hostdom{$tryserver} eq $udom) {
437: my $answer=reply("encrypt:currentauth:$udom:$uname",$tryserver);
438: unless ($answer eq 'unknown_user' or $answer eq 'refused') {
439: if (length($answer)) {
440: return $answer;
441: }
442: else {
443: &logthis("User $uname at $udom lacks an authentication mechanism");
444: return 'no_host';
445: }
446: }
447: }
448: }
449: &logthis("User $uname at $udom lacks an authentication mechanism");
450: return 'no_host';
451: }
452:
453: # --------- Try to authenticate user from domain's lib servers (first this one)
454:
455: sub authenticate {
456: my ($uname,$upass,$udom)=@_;
457: $upass=escape($upass);
458: if (($perlvar{'lonRole'} eq 'library') &&
459: ($udom eq $perlvar{'lonDefDomain'})) {
460: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$perlvar{'lonHostID'});
461: if ($answer =~ /authorized/) {
462: if ($answer eq 'authorized') {
463: &logthis("User $uname at $udom authorized by local server");
464: return $perlvar{'lonHostID'};
465: }
466: if ($answer eq 'non_authorized') {
467: &logthis("User $uname at $udom rejected by local server");
468: return 'no_host';
469: }
470: }
471: }
472:
473: my $tryserver;
474: foreach $tryserver (keys %libserv) {
475: if ($hostdom{$tryserver} eq $udom) {
476: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$tryserver);
477: if ($answer =~ /authorized/) {
478: if ($answer eq 'authorized') {
479: &logthis("User $uname at $udom authorized by $tryserver");
480: return $tryserver;
481: }
482: if ($answer eq 'non_authorized') {
483: &logthis("User $uname at $udom rejected by $tryserver");
484: return 'no_host';
485: }
486: }
487: }
488: }
489: &logthis("User $uname at $udom could not be authenticated");
490: return 'no_host';
491: }
492:
493: # ---------------------- Find the homebase for a user from domain's lib servers
494:
495: sub homeserver {
496: my ($uname,$udom)=@_;
497:
498: my $index="$uname:$udom";
499: if ($homecache{$index}) { return "$homecache{$index}"; }
500:
501: my $tryserver;
502: foreach $tryserver (keys %libserv) {
503: if ($hostdom{$tryserver} eq $udom) {
504: my $answer=reply("home:$udom:$uname",$tryserver);
505: if ($answer eq 'found') {
506: $homecache{$index}=$tryserver;
507: return $tryserver;
508: }
509: }
510: }
511: return 'no_host';
512: }
513:
514: # ------------------------------------- Find the usernames behind a list of IDs
515:
516: sub idget {
517: my ($udom,@ids)=@_;
518: my %returnhash=();
519:
520: my $tryserver;
521: foreach $tryserver (keys %libserv) {
522: if ($hostdom{$tryserver} eq $udom) {
523: my $idlist=join('&',@ids);
524: $idlist=~tr/A-Z/a-z/;
525: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
526: my @answer=();
527: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
528: @answer=split(/\&/,$reply);
529: } ;
530: my $i;
531: for ($i=0;$i<=$#ids;$i++) {
532: if ($answer[$i]) {
533: $returnhash{$ids[$i]}=$answer[$i];
534: }
535: }
536: }
537: }
538: return %returnhash;
539: }
540:
541: # ------------------------------------- Find the IDs behind a list of usernames
542:
543: sub idrget {
544: my ($udom,@unames)=@_;
545: my %returnhash=();
546: map {
547: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
548: } @unames;
549: return %returnhash;
550: }
551:
552: # ------------------------------- Store away a list of names and associated IDs
553:
554: sub idput {
555: my ($udom,%ids)=@_;
556: my %servers=();
557: map {
558: my $uhom=&homeserver($_,$udom);
559: if ($uhom ne 'no_host') {
560: my $id=&escape($ids{$_});
561: $id=~tr/A-Z/a-z/;
562: my $unam=&escape($_);
563: if ($servers{$uhom}) {
564: $servers{$uhom}.='&'.$id.'='.$unam;
565: } else {
566: $servers{$uhom}=$id.'='.$unam;
567: }
568: &critical('put:'.$udom.':'.$unam.':environment:id='.$id,$uhom);
569: }
570: } keys %ids;
571: map {
572: &critical('idput:'.$udom.':'.$servers{$_},$_);
573: } keys %servers;
574: }
575:
576: # ------------------------------------- Find the section of student in a course
577:
578: sub usection {
579: my ($udom,$unam,$courseid)=@_;
580: $courseid=~s/\_/\//g;
581: $courseid=~s/^(\w)/\/$1/;
582: map {
583: my ($key,$value)=split(/\=/,$_);
584: $key=&unescape($key);
585: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
586: my $section=$1;
587: if ($key eq $courseid.'_st') { $section=''; }
588: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
589: my $now=time;
590: my $notactive=0;
591: if ($start) {
592: if ($now<$start) { $notactive=1; }
593: }
594: if ($end) {
595: if ($now>$end) { $notactive=1; }
596: }
597: unless ($notactive) { return $section; }
598: }
599: } split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
600: &homeserver($unam,$udom)));
601: return '-1';
602: }
603:
604: # ------------------------------------- Read an entry from a user's environment
605:
606: sub userenvironment {
607: my ($udom,$unam,@what)=@_;
608: my %returnhash=();
609: my @answer=split(/\&/,
610: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
611: &homeserver($unam,$udom)));
612: my $i;
613: for ($i=0;$i<=$#what;$i++) {
614: $returnhash{$what[$i]}=&unescape($answer[$i]);
615: }
616: return %returnhash;
617: }
618:
619: # ----------------------------- Subscribe to a resource, return URL if possible
620:
621: sub subscribe {
622: my $fname=shift;
623: my $author=$fname;
624: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
625: my ($udom,$uname)=split(/\//,$author);
626: my $home=homeserver($uname,$udom);
627: if (($home eq 'no_host') || ($home eq $perlvar{'lonHostID'})) {
628: return 'not_found';
629: }
630: my $answer=reply("sub:$fname",$home);
631: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
632: $answer.=' by '.$home;
633: }
634: return $answer;
635: }
636:
637: # -------------------------------------------------------------- Replicate file
638:
639: sub repcopy {
640: my $filename=shift;
641: $filename=~s/\/+/\//g;
642: my $transname="$filename.in.transfer";
643: if ((-e $filename) || (-e $transname)) { return OK; }
644: my $remoteurl=subscribe($filename);
645: if ($remoteurl =~ /^con_lost by/) {
646: &logthis("Subscribe returned $remoteurl: $filename");
647: return HTTP_SERVICE_UNAVAILABLE;
648: } elsif ($remoteurl eq 'not_found') {
649: &logthis("Subscribe returned not_found: $filename");
650: return HTTP_NOT_FOUND;
651: } elsif ($remoteurl =~ /^rejected by/) {
652: &logthis("Subscribe returned $remoteurl: $filename");
653: return FORBIDDEN;
654: } elsif ($remoteurl eq 'directory') {
655: return OK;
656: } else {
657: my @parts=split(/\//,$filename);
658: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
659: if ($path ne "$perlvar{'lonDocRoot'}/res") {
660: &logthis("Malconfiguration for replication: $filename");
661: return HTTP_BAD_REQUEST;
662: }
663: my $count;
664: for ($count=5;$count<$#parts;$count++) {
665: $path.="/$parts[$count]";
666: if ((-e $path)!=1) {
667: mkdir($path,0777);
668: }
669: }
670: my $ua=new LWP::UserAgent;
671: my $request=new HTTP::Request('GET',"$remoteurl");
672: my $response=$ua->request($request,$transname);
673: if ($response->is_error()) {
674: unlink($transname);
675: my $message=$response->status_line;
676: &logthis("<font color=blue>WARNING:"
677: ." LWP get: $message: $filename</font>");
678: return HTTP_SERVICE_UNAVAILABLE;
679: } else {
680: if ($remoteurl!~/\.meta$/) {
681: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
682: my $mresponse=$ua->request($mrequest,$filename.'.meta');
683: if ($mresponse->is_error()) {
684: unlink($filename.'.meta');
685: &logthis(
686: "<font color=yellow>INFO: No metadata: $filename</font>");
687: }
688: }
689: rename($transname,$filename);
690: return OK;
691: }
692: }
693: }
694:
695: # --------------------------------------------------------- Server Side Include
696:
697: sub ssi {
698:
699: my ($fn,%form)=@_;
700:
701: my $ua=new LWP::UserAgent;
702:
703: my $request;
704:
705: if (%form) {
706: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
707: $request->content(join '&', map { "$_=$form{$_}" } keys %form);
708: } else {
709: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
710: }
711:
712: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
713: my $response=$ua->request($request);
714:
715: return $response->content;
716: }
717:
718: # ------------------------------------------------------------------------- Log
719:
720: sub log {
721: my ($dom,$nam,$hom,$what)=@_;
722: return critical("log:$dom:$nam:$what",$hom);
723: }
724:
725: # ------------------------------------------------------------------ Course Log
726:
727: sub flushcourselogs {
728: &logthis('Flushing course log buffers');
729: map {
730: my $crsid=$_;
731: if (&reply('log:'.$ENV{'course.'.$crsid.'.domain'}.':'.
732: $ENV{'course.'.$crsid.'.num'}.':'.
733: &escape($courselogs{$crsid}),
734: $ENV{'course.'.$crsid.'.home'}) eq 'ok') {
735: delete $courselogs{$crsid};
736: } else {
737: &logthis('Failed to flush log buffer for '.$crsid);
738: if (length($courselogs{$crsid})>40000) {
739: &logthis("<font color=blue>WARNING: Buffer for ".$crsid.
740: " exceeded maximum size, deleting.</font>");
741: delete $courselogs{$crsid};
742: }
743: }
744: } keys %courselogs;
745: }
746:
747: sub courselog {
748: my $what=shift;
749: $what=time.':'.$what;
750: unless ($ENV{'request.course.id'}) { return ''; }
751: if (defined $courselogs{$ENV{'request.course.id'}}) {
752: $courselogs{$ENV{'request.course.id'}}.='&'.$what;
753: } else {
754: $courselogs{$ENV{'request.course.id'}}.=$what;
755: }
756: if (length($courselogs{$ENV{'request.course.id'}})>4048) {
757: &flushcourselogs();
758: }
759: }
760:
761: sub courseacclog {
762: my $fnsymb=shift;
763: unless ($ENV{'request.course.id'}) { return ''; }
764: my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
765: if ($what=~/(problem|exam|quiz|assess|survey|form)$/) {
766: map {
767: if ($_=~/^form\.(.*)/) {
768: $what.=':'.$1.'='.$ENV{$_};
769: }
770: } keys %ENV;
771: }
772: &courselog($what);
773: }
774:
775: # ----------------------------------------------------------- Check out an item
776:
777: sub checkout {
778: my ($symb,$tuname,$tudom,$tcrsid)=@_;
779: my $now=time;
780: my $lonhost=$perlvar{'lonHostID'};
781: my $infostr=&escape(
782: $tuname.'&'.
783: $tudom.'&'.
784: $tcrsid.'&'.
785: $symb.'&'.
786: $now.'&'.$ENV{'REMOTE_ADDR'});
787: my $token=&reply('tmpput:'.$infostr,$lonhost);
788: if ($token=~/^error\:/) {
789: &logthis("<font color=blue>WARNING: ".
790: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
791: "</font>");
792: return '';
793: }
794:
795: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
796: $token=~tr/a-z/A-Z/;
797:
798: my %infohash=('resource.0.outtoken' => $token,
799: 'resource.0.checkouttime' => $now,
800: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
801:
802: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
803: return '';
804: } else {
805: &logthis("<font color=blue>WARNING: ".
806: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
807: "</font>");
808: }
809:
810: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
811: &escape('Checkout '.$infostr.' - '.
812: $token)) ne 'ok') {
813: return '';
814: } else {
815: &logthis("<font color=blue>WARNING: ".
816: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
817: "</font>");
818: }
819: return $token;
820: }
821:
822: # ------------------------------------------------------------ Check in an item
823:
824: sub checkin {
825: my $token=shift;
826: my $now=time;
827: my ($ta,$tb,$lonhost)=split(/\*/,$token);
828: $lonhost=~tr/A-Z/a-z/;
829: my $dtoken=$ta.'_'.$hostip{$lonhost}.'_'.$tb;
830: $dtoken=~s/\W/\_/g;
831: my ($tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
832: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
833:
834: unless (($tuname) && ($tudom)) {
835: &logthis('Check in '.$token.' ('.$dtoken.') failed');
836: return '';
837: }
838:
839: unless (&allowed('mgr',$tcrsid)) {
840: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
841: $ENV{'user.name'}.' - '.$ENV{'user.domain'});
842: return '';
843: }
844:
845: my %infohash=('resource.0.intoken' => $token,
846: 'resource.0.checkintime' => $now,
847: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
848:
849: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
850: return '';
851: }
852:
853: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
854: &escape('Checkin - '.$token)) ne 'ok') {
855: return '';
856: }
857:
858: return ($symb,$tuname,$tudom,$tcrsid);
859: }
860:
861: # --------------------------------------------- Set Expire Date for Spreadsheet
862:
863: sub expirespread {
864: my ($uname,$udom,$stype,$usymb)=@_;
865: my $cid=$ENV{'request.course.id'};
866: if ($cid) {
867: my $now=time;
868: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
869: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
870: $ENV{'course.'.$cid.'.num'}.
871: ':nohist_expirationdates:'.
872: &escape($key).'='.$now,
873: $ENV{'course.'.$cid.'.home'})
874: }
875: return 'ok';
876: }
877:
878: # ----------------------------------------------------- Devalidate Spreadsheets
879:
880: sub devalidate {
881: my $symb=shift;
882: my $cid=$ENV{'request.course.id'};
883: if ($cid) {
884: my $key=$ENV{'user.name'}.':'.$ENV{'user.domain'}.':';
885: my $status=
886: &del('nohist_calculatedsheet',
887: [$key.'studentcalc'],
888: $ENV{'course.'.$cid.'.domain'},
889: $ENV{'course.'.$cid.'.num'})
890: .' '.
891: &del('nohist_calculatedsheets_'.$cid,
892: [$key.'assesscalc:'.$symb]);
893: unless ($status eq 'ok ok') {
894: &logthis('Could not devalidate spreadsheet '.
895: $ENV{'user.name'}.' at '.$ENV{'user.domain'}.' for '.
896: $symb.': '.$status);
897: }
898: }
899: }
900:
901: sub hash2str {
902: my (%hash)=@_;
903: my $result='';
904: map { $result.=escape($_).'='.escape($hash{$_}).'&'; } keys %hash;
905: $result=~s/\&$//;
906: return $result;
907: }
908:
909: sub str2hash {
910: my ($string) = @_;
911: my %returnhash;
912: map {
913: my ($name,$value)=split(/\=/,$_);
914: $returnhash{&unescape($name)}=&unescape($value);
915: } split(/\&/,$string);
916: return %returnhash;
917: }
918:
919: # -------------------------------------------------------------------Temp Store
920:
921: sub tmpreset {
922: my ($symb,$namespace,$domain,$stuname) = @_;
923: if (!$symb) {
924: $symb=&symbread();
925: if (!$symb) { $symb= $ENV{'REQUEST_URI'}; }
926: }
927: $symb=escape($symb);
928:
929: if (!$namespace) { $namespace=$ENV{'request.state'}; }
930: $namespace=~s/\//\_/g;
931: $namespace=~s/\W//g;
932:
933: #FIXME needs to do something for /pub resources
934: if (!$domain) { $domain=$ENV{'user.domain'}; }
935: if (!$stuname) { $stuname=$ENV{'user.name'}; }
936: my $path=$perlvar{'lonDaemons'}.'/tmp';
937: my %hash;
938: if (tie(%hash,'GDBM_File',
939: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
940: &GDBM_WRCREAT,0640)) {
941: foreach my $key (keys %hash) {
942: if ($key=~ /:$symb:/) {
943: delete($hash{$key});
944: }
945: }
946: }
947: }
948:
949: sub tmpstore {
950: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
951:
952: if (!$symb) {
953: $symb=&symbread();
954: if (!$symb) { $symb= $ENV{'request.url'}; }
955: }
956: $symb=escape($symb);
957:
958: if (!$namespace) {
959: # I don't think we would ever want to store this for a course.
960: # it seems this will only be used if we don't have a course.
961: #$namespace=$ENV{'request.course.id'};
962: #if (!$namespace) {
963: $namespace=$ENV{'request.state'};
964: #}
965: }
966: $namespace=~s/\//\_/g;
967: $namespace=~s/\W//g;
968: #FIXME needs to do something for /pub resources
969: if (!$domain) { $domain=$ENV{'user.domain'}; }
970: if (!$stuname) { $stuname=$ENV{'user.name'}; }
971: my $now=time;
972: my %hash;
973: my $path=$perlvar{'lonDaemons'}.'/tmp';
974: if (tie(%hash,'GDBM_File',
975: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
976: &GDBM_WRCREAT,0640)) {
977: $hash{"version:$symb"}++;
978: my $version=$hash{"version:$symb"};
979: my $allkeys='';
980: foreach my $key (keys(%$storehash)) {
981: $allkeys.=$key.':';
982: $hash{"$version:$symb:$key"}=$$storehash{$key};
983: }
984: $hash{"$version:$symb:timestamp"}=$now;
985: $allkeys.='timestamp';
986: $hash{"$version:keys:$symb"}=$allkeys;
987: if (untie(%hash)) {
988: return 'ok';
989: } else {
990: return "error:$!";
991: }
992: } else {
993: return "error:$!";
994: }
995: }
996:
997: # -----------------------------------------------------------------Temp Restore
998:
999: sub tmprestore {
1000: my ($symb,$namespace,$domain,$stuname) = @_;
1001:
1002: if (!$symb) {
1003: $symb=&symbread();
1004: if (!$symb) { $symb= $ENV{'request.url'}; }
1005: }
1006: $symb=escape($symb);
1007:
1008: if (!$namespace) { $namespace=$ENV{'request.state'}; }
1009: #FIXME needs to do something for /pub resources
1010: if (!$domain) { $domain=$ENV{'user.domain'}; }
1011: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1012:
1013: my %returnhash;
1014: $namespace=~s/\//\_/g;
1015: $namespace=~s/\W//g;
1016: my %hash;
1017: my $path=$perlvar{'lonDaemons'}.'/tmp';
1018: if (tie(%hash,'GDBM_File',
1019: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1020: &GDBM_READER,0640)) {
1021: my $version=$hash{"version:$symb"};
1022: $returnhash{'version'}=$version;
1023: my $scope;
1024: for ($scope=1;$scope<=$version;$scope++) {
1025: my $vkeys=$hash{"$scope:keys:$symb"};
1026: my @keys=split(/:/,$vkeys);
1027: my $key;
1028: $returnhash{"$scope:keys"}=$vkeys;
1029: foreach $key (@keys) {
1030: $returnhash{"$scope:$key"}=$hash{"$scope:$symb:$key"};
1031: $returnhash{"$key"}=$hash{"$scope:$symb:$key"};
1032: }
1033: }
1034: if (!(untie(%hash))) {
1035: return "error:$!";
1036: }
1037: } else {
1038: return "error:$!";
1039: }
1040: return %returnhash;
1041: }
1042:
1043: # ----------------------------------------------------------------------- Store
1044:
1045: sub store {
1046: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
1047: my $home='';
1048:
1049: if ($stuname) { $home=&homeserver($stuname,$domain); }
1050:
1051: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1052:
1053: &devalidate($symb);
1054:
1055: $symb=escape($symb);
1056: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
1057: if (!$domain) { $domain=$ENV{'user.domain'}; }
1058: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1059: if (!$home) { $home=$ENV{'user.home'}; }
1060: my $namevalue='';
1061: map {
1062: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1063: } keys %$storehash;
1064: $namevalue=~s/\&$//;
1065: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1066: }
1067:
1068: # -------------------------------------------------------------- Critical Store
1069:
1070: sub cstore {
1071: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
1072: my $home='';
1073:
1074: if ($stuname) { $home=&homeserver($stuname,$domain); }
1075:
1076: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1077:
1078: &devalidate($symb);
1079:
1080: $symb=escape($symb);
1081: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
1082: if (!$domain) { $domain=$ENV{'user.domain'}; }
1083: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1084: if (!$home) { $home=$ENV{'user.home'}; }
1085:
1086: my $namevalue='';
1087: map {
1088: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1089: } keys %$storehash;
1090: $namevalue=~s/\&$//;
1091: return critical("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1092: }
1093:
1094: # --------------------------------------------------------------------- Restore
1095:
1096: sub restore {
1097: my ($symb,$namespace,$domain,$stuname) = @_;
1098: my $home='';
1099:
1100: if ($stuname) { $home=&homeserver($stuname,$domain); }
1101:
1102: if (!$symb) {
1103: unless ($symb=escape(&symbread())) { return ''; }
1104: } else {
1105: $symb=&escape($symb);
1106: }
1107: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
1108: if (!$domain) { $domain=$ENV{'user.domain'}; }
1109: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1110: if (!$home) { $home=$ENV{'user.home'}; }
1111: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
1112:
1113: my %returnhash=();
1114: map {
1115: my ($name,$value)=split(/\=/,$_);
1116: $returnhash{&unescape($name)}=&unescape($value);
1117: } split(/\&/,$answer);
1118: my $version;
1119: for ($version=1;$version<=$returnhash{'version'};$version++) {
1120: map {
1121: $returnhash{$_}=$returnhash{$version.':'.$_};
1122: } split(/\:/,$returnhash{$version.':keys'});
1123: }
1124: return %returnhash;
1125: }
1126:
1127: # ---------------------------------------------------------- Course Description
1128:
1129: sub coursedescription {
1130: my $courseid=shift;
1131: $courseid=~s/^\///;
1132: $courseid=~s/\_/\//g;
1133: my ($cdomain,$cnum)=split(/\//,$courseid);
1134: my $chome=&homeserver($cnum,$cdomain);
1135: if ($chome ne 'no_host') {
1136: my %returnhash=&dump('environment',$cdomain,$cnum);
1137: if (!exists($returnhash{'con_lost'})) {
1138: my $normalid=$cdomain.'_'.$cnum;
1139: my %envhash=();
1140: $returnhash{'home'}= $chome;
1141: $returnhash{'domain'} = $cdomain;
1142: $returnhash{'num'} = $cnum;
1143: while (my ($name,$value) = each %returnhash) {
1144: $envhash{'course.'.$normalid.'.'.$name}=$value;
1145: }
1146: $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
1147: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1148: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1149: $envhash{'course.'.$normalid.'.last_cache'}=time;
1150: $envhash{'course.'.$normalid.'.home'}=$chome;
1151: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
1152: $envhash{'course.'.$normalid.'.num'}=$cnum;
1153: &appenv(%envhash);
1154: return %returnhash;
1155: }
1156: }
1157: return ();
1158: }
1159:
1160: # -------------------------------------------------------- Get user privileges
1161:
1162: sub rolesinit {
1163: my ($domain,$username,$authhost)=@_;
1164: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1165: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1166: my %allroles=();
1167: my %thesepriv=();
1168: my $now=time;
1169: my $userroles="user.login.time=$now\n";
1170: my $thesestr;
1171:
1172: if ($rolesdump ne '') {
1173: map {
1174: if ($_!~/^rolesdef\&/) {
1175: my ($area,$role)=split(/=/,$_);
1176: $area=~s/\_\w\w$//;
1177: my ($trole,$tend,$tstart)=split(/_/,$role);
1178: $userroles.='user.role.'.$trole.'.'.$area.'='.
1179: $tstart.'.'.$tend."\n";
1180: if ($tend!=0) {
1181: if ($tend<$now) {
1182: $trole='';
1183: }
1184: }
1185: if ($tstart!=0) {
1186: if ($tstart>$now) {
1187: $trole='';
1188: }
1189: }
1190: if (($area ne '') && ($trole ne '')) {
1191: my $spec=$trole.'.'.$area;
1192: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
1193: if ($trole =~ /^cr\//) {
1194: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
1195: my $homsvr=homeserver($rauthor,$rdomain);
1196: if ($hostname{$homsvr} ne '') {
1197: my $roledef=
1198: reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
1199: $homsvr);
1200: if (($roledef ne 'con_lost') && ($roledef ne '')) {
1201: my ($syspriv,$dompriv,$coursepriv)=
1202: split(/\_/,unescape($roledef));
1203: $allroles{'cm./'}.=':'.$syspriv;
1204: $allroles{$spec.'./'}.=':'.$syspriv;
1205: if ($tdomain ne '') {
1206: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
1207: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
1208: if ($trest ne '') {
1209: $allroles{'cm.'.$area}.=':'.$coursepriv;
1210: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
1211: }
1212: }
1213: }
1214: }
1215: } else {
1216: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
1217: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
1218: if ($tdomain ne '') {
1219: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1220: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1221: if ($trest ne '') {
1222: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
1223: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
1224: }
1225: }
1226: }
1227: }
1228: }
1229: } split(/&/,$rolesdump);
1230: my $adv=0;
1231: my $author=0;
1232: map {
1233: %thesepriv=();
1234: if (($_!~/^st/) && ($_!~/^ta/) && ($_!~/^cm/)) { $adv=1; }
1235: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
1236: map {
1237: if ($_ ne '') {
1238: my ($privilege,$restrictions)=split(/&/,$_);
1239: if ($restrictions eq '') {
1240: $thesepriv{$privilege}='F';
1241: } else {
1242: if ($thesepriv{$privilege} ne 'F') {
1243: $thesepriv{$privilege}.=$restrictions;
1244: }
1245: }
1246: }
1247: } split(/:/,$allroles{$_});
1248: $thesestr='';
1249: map { $thesestr.=':'.$_.'&'.$thesepriv{$_}; } keys %thesepriv;
1250: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
1251: } keys %allroles;
1252: $userroles.='user.adv='.$adv."\n".
1253: 'user.author='.$author."\n";
1254: $ENV{'user.adv'}=$adv;
1255: }
1256: return $userroles;
1257: }
1258:
1259: # --------------------------------------------------------------- get interface
1260:
1261: sub get {
1262: my ($namespace,$storearr,$udomain,$uname)=@_;
1263: my $items='';
1264: map {
1265: $items.=escape($_).'&';
1266: } @$storearr;
1267: $items=~s/\&$//;
1268: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1269: if (!$uname) { $uname=$ENV{'user.name'}; }
1270: my $uhome=&homeserver($uname,$udomain);
1271:
1272: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1273: my @pairs=split(/\&/,$rep);
1274: my %returnhash=();
1275: my $i=0;
1276: map {
1277: $returnhash{$_}=unescape($pairs[$i]);
1278: $i++;
1279: } @$storearr;
1280: return %returnhash;
1281: }
1282:
1283: # --------------------------------------------------------------- del interface
1284:
1285: sub del {
1286: my ($namespace,$storearr,$udomain,$uname)=@_;
1287: my $items='';
1288: map {
1289: $items.=escape($_).'&';
1290: } @$storearr;
1291: $items=~s/\&$//;
1292: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1293: if (!$uname) { $uname=$ENV{'user.name'}; }
1294: my $uhome=&homeserver($uname,$udomain);
1295:
1296: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1297: }
1298:
1299: # -------------------------------------------------------------- dump interface
1300:
1301: sub dump {
1302: my ($namespace,$udomain,$uname)=@_;
1303: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1304: if (!$uname) { $uname=$ENV{'user.name'}; }
1305: my $uhome=&homeserver($uname,$udomain);
1306: my $rep=reply("dump:$udomain:$uname:$namespace",$uhome);
1307: my @pairs=split(/\&/,$rep);
1308: my %returnhash=();
1309: map {
1310: my ($key,$value)=split(/=/,$_);
1311: $returnhash{unescape($key)}=unescape($value);
1312: } @pairs;
1313: return %returnhash;
1314: }
1315:
1316: # --------------------------------------------------------------- put interface
1317:
1318: sub put {
1319: my ($namespace,$storehash,$udomain,$uname)=@_;
1320: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1321: if (!$uname) { $uname=$ENV{'user.name'}; }
1322: my $uhome=&homeserver($uname,$udomain);
1323: my $items='';
1324: map {
1325: $items.=&escape($_).'='.&escape($$storehash{$_}).'&';
1326: } keys %$storehash;
1327: $items=~s/\&$//;
1328: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1329: }
1330:
1331: # ------------------------------------------------------ critical put interface
1332:
1333: sub cput {
1334: my ($namespace,$storehash,$udomain,$uname)=@_;
1335: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1336: if (!$uname) { $uname=$ENV{'user.name'}; }
1337: my $uhome=&homeserver($uname,$udomain);
1338: my $items='';
1339: map {
1340: $items.=escape($_).'='.escape($$storehash{$_}).'&';
1341: } keys %$storehash;
1342: $items=~s/\&$//;
1343: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1344: }
1345:
1346: # -------------------------------------------------------------- eget interface
1347:
1348: sub eget {
1349: my ($namespace,$storearr,$udomain,$uname)=@_;
1350: my $items='';
1351: map {
1352: $items.=escape($_).'&';
1353: } @$storearr;
1354: $items=~s/\&$//;
1355: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1356: if (!$uname) { $uname=$ENV{'user.name'}; }
1357: my $uhome=&homeserver($uname,$udomain);
1358: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1359: my @pairs=split(/\&/,$rep);
1360: my %returnhash=();
1361: my $i=0;
1362: map {
1363: $returnhash{$_}=unescape($pairs[$i]);
1364: $i++;
1365: } @$storearr;
1366: return %returnhash;
1367: }
1368:
1369: # ------------------------------------------------- Check for a user privilege
1370:
1371: sub allowed {
1372: my ($priv,$uri)=@_;
1373:
1374: my $orguri=$uri;
1375: $uri=&declutter($uri);
1376:
1377: # Free bre access to adm and meta resources
1378:
1379: if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1380: return 'F';
1381: }
1382:
1383: # Free bre to public access
1384:
1385: if ($priv eq 'bre') {
1386: if (&metadata($uri,'copyright') eq 'public') { return 'F'; }
1387: }
1388:
1389: my $thisallowed='';
1390: my $statecond=0;
1391: my $courseprivid='';
1392:
1393: # Course
1394:
1395: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/$priv\&([^\:]*)/) {
1396: $thisallowed.=$1;
1397: }
1398:
1399: # Domain
1400:
1401: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1402: =~/$priv\&([^\:]*)/) {
1403: $thisallowed.=$1;
1404: }
1405:
1406: # Course: uri itself is a course
1407: my $courseuri=$uri;
1408: $courseuri=~s/\_(\d)/\/$1/;
1409: $courseuri=~s/^([^\/])/\/$1/;
1410:
1411: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1412: =~/$priv\&([^\:]*)/) {
1413: $thisallowed.=$1;
1414: }
1415:
1416: # Full access at system, domain or course-wide level? Exit.
1417:
1418: if ($thisallowed=~/F/) {
1419: return 'F';
1420: }
1421:
1422: # If this is generating or modifying users, exit with special codes
1423:
1424: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:$priv\:/) {
1425: return $thisallowed;
1426: }
1427: #
1428: # Gathered so far: system, domain and course wide privileges
1429: #
1430: # Course: See if uri or referer is an individual resource that is part of
1431: # the course
1432:
1433: if ($ENV{'request.course.id'}) {
1434: $courseprivid=$ENV{'request.course.id'};
1435: if ($ENV{'request.course.sec'}) {
1436: $courseprivid.='/'.$ENV{'request.course.sec'};
1437: }
1438: $courseprivid=~s/\_/\//;
1439: my $checkreferer=1;
1440: my @uriparts=split(/\//,$uri);
1441: my $filename=$uriparts[$#uriparts];
1442: my $pathname=$uri;
1443: $pathname=~s/\/$filename$//;
1444: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1445: /\&$filename\:([\d\|]+)\&/) {
1446: $statecond=$1;
1447: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1448: =~/$priv\&([^\:]*)/) {
1449: $thisallowed.=$1;
1450: $checkreferer=0;
1451: }
1452: }
1453:
1454: if ($checkreferer) {
1455: my $refuri=$ENV{'httpref.'.$orguri};
1456:
1457: unless ($refuri) {
1458: map {
1459: if ($_=~/^httpref\..*\*/) {
1460: my $pattern=$_;
1461: $pattern=~s/^httpref\.\/res\///;
1462: $pattern=~s/\*/\[\^\/\]\+/g;
1463: $pattern=~s/\//\\\//g;
1464: if ($orguri=~/$pattern/) {
1465: $refuri=$ENV{$_};
1466: }
1467: }
1468: } keys %ENV;
1469: }
1470: if ($refuri) {
1471: $refuri=&declutter($refuri);
1472: my @uriparts=split(/\//,$refuri);
1473: my $filename=$uriparts[$#uriparts];
1474: my $pathname=$refuri;
1475: $pathname=~s/\/$filename$//;
1476: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1477: /\&$filename\:([\d\|]+)\&/) {
1478: my $refstatecond=$1;
1479: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1480: =~/$priv\&([^\:]*)/) {
1481: $thisallowed.=$1;
1482: $uri=$refuri;
1483: $statecond=$refstatecond;
1484: }
1485: }
1486: }
1487: }
1488: }
1489:
1490: #
1491: # Gathered now: all privileges that could apply, and condition number
1492: #
1493: #
1494: # Full or no access?
1495: #
1496:
1497: if ($thisallowed=~/F/) {
1498: return 'F';
1499: }
1500:
1501: unless ($thisallowed) {
1502: return '';
1503: }
1504:
1505: # Restrictions exist, deal with them
1506: #
1507: # C:according to course preferences
1508: # R:according to resource settings
1509: # L:unless locked
1510: # X:according to user session state
1511: #
1512:
1513: # Possibly locked functionality, check all courses
1514: # Locks might take effect only after 10 minutes cache expiration for other
1515: # courses, and 2 minutes for current course
1516:
1517: my $envkey;
1518: if ($thisallowed=~/L/) {
1519: foreach $envkey (keys %ENV) {
1520: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
1521: my $courseid=$2;
1522: my $roleid=$1.'.'.$2;
1523: $courseid=~s/^\///;
1524: my $expiretime=600;
1525: if ($ENV{'request.role'} eq $roleid) {
1526: $expiretime=120;
1527: }
1528: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
1529: my $prefix='course.'.$cdom.'_'.$cnum.'.';
1530: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
1531: &coursedescription($courseid);
1532: }
1533: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,$csec\,/)
1534: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
1535: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1536: &log($ENV{'user.domain'},$ENV{'user.name'},
1537: $ENV{'user.host'},
1538: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1539: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1540: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1541: return '';
1542: }
1543: }
1544: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/)
1545: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
1546: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1547: &log($ENV{'user.domain'},$ENV{'user.name'},
1548: $ENV{'user.host'},
1549: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1550: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1551: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1552: return '';
1553: }
1554: }
1555: }
1556: }
1557: }
1558:
1559: #
1560: # Rest of the restrictions depend on selected course
1561: #
1562:
1563: unless ($ENV{'request.course.id'}) {
1564: return '1';
1565: }
1566:
1567: #
1568: # Now user is definitely in a course
1569: #
1570:
1571:
1572: # Course preferences
1573:
1574: if ($thisallowed=~/C/) {
1575: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1576: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1577: =~/\,$rolecode\,/) {
1578: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1579: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1580: $ENV{'request.course.id'});
1581: return '';
1582: }
1583: }
1584:
1585: # Resource preferences
1586:
1587: if ($thisallowed=~/R/) {
1588: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1589: my $filename=$perlvar{'lonDocRoot'}.'/res/'.$uri.'.meta';
1590: if (-e $filename) {
1591: my @content;
1592: {
1593: my $fh=Apache::File->new($filename);
1594: @content=<$fh>;
1595: }
1596: if (join('',@content)=~
1597: /\<roledeny[^\>]*\>[^\<]*$rolecode[^\<]*\<\/roledeny\>/) {
1598: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1599: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1600: return '';
1601:
1602: }
1603: }
1604: }
1605:
1606: # Restricted by state?
1607:
1608: if ($thisallowed=~/X/) {
1609: if (&condval($statecond)) {
1610: return '2';
1611: } else {
1612: return '';
1613: }
1614: }
1615:
1616: return 'F';
1617: }
1618:
1619: # ----------------------------------------------------------------- Define Role
1620:
1621: sub definerole {
1622: if (allowed('mcr','/')) {
1623: my ($rolename,$sysrole,$domrole,$courole)=@_;
1624: map {
1625: my ($crole,$cqual)=split(/\&/,$_);
1626: if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
1627: if ($pr{'cr:s'}=~/$crole\&/) {
1628: if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
1629: return "refused:s:$crole&$cqual";
1630: }
1631: }
1632: } split('/',$sysrole);
1633: map {
1634: my ($crole,$cqual)=split(/\&/,$_);
1635: if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
1636: if ($pr{'cr:d'}=~/$crole\&/) {
1637: if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
1638: return "refused:d:$crole&$cqual";
1639: }
1640: }
1641: } split('/',$domrole);
1642: map {
1643: my ($crole,$cqual)=split(/\&/,$_);
1644: if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
1645: if ($pr{'cr:c'}=~/$crole\&/) {
1646: if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
1647: return "refused:c:$crole&$cqual";
1648: }
1649: }
1650: } split('/',$courole);
1651: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1652: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1653: "rolesdef_$rolename=".
1654: escape($sysrole.'_'.$domrole.'_'.$courole);
1655: return reply($command,$ENV{'user.home'});
1656: } else {
1657: return 'refused';
1658: }
1659: }
1660:
1661: # ---------------- Make a metadata query against the network of library servers
1662:
1663: sub metadata_query {
1664: my ($query,$custom,$customshow)=@_;
1665: # need to put in a library server loop here and return a hash
1666: my %rhash;
1667: for my $server (keys %libserv) {
1668: unless ($custom or $customshow) {
1669: my $reply=&reply("querysend:".&escape($query),$server);
1670: $rhash{$server}=$reply;
1671: }
1672: else {
1673: my $reply=&reply("querysend:".&escape($query).':'.
1674: &escape($custom).':'.&escape($customshow),
1675: $server);
1676: $rhash{$server}=$reply;
1677: }
1678: }
1679: return \%rhash;
1680: }
1681:
1682: # ------------------------------------------------------------------ Plain Text
1683:
1684: sub plaintext {
1685: my $short=shift;
1686: return $prp{$short};
1687: }
1688:
1689: # ------------------------------------------------------------------ Plain Text
1690:
1691: sub fileembstyle {
1692: my $ending=shift;
1693: return $fe{$ending};
1694: }
1695:
1696: # ------------------------------------------------------------ Description Text
1697:
1698: sub filedescription {
1699: my $ending=shift;
1700: return $fd{$ending};
1701: }
1702:
1703: # ----------------------------------------------------------------- Assign Role
1704:
1705: sub assignrole {
1706: my ($udom,$uname,$url,$role,$end,$start)=@_;
1707: my $mrole;
1708: if ($role =~ /^cr\//) {
1709: unless (&allowed('ccr',$url)) {
1710: &logthis('Refused custom assignrole: '.
1711: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1712: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1713: return 'refused';
1714: }
1715: $mrole='cr';
1716: } else {
1717: my $cwosec=$url;
1718: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1719: unless (&allowed('c'.$role,$cwosec)) {
1720: &logthis('Refused assignrole: '.
1721: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1722: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1723: return 'refused';
1724: }
1725: $mrole=$role;
1726: }
1727: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1728: "$udom:$uname:$url".'_'."$mrole=$role";
1729: if ($end) { $command.='_'.$end; }
1730: if ($start) {
1731: if ($end) {
1732: $command.='_'.$start;
1733: } else {
1734: $command.='_0_'.$start;
1735: }
1736: }
1737: return &reply($command,&homeserver($uname,$udom));
1738: }
1739:
1740: # -------------------------------------------------- Modify user authentication
1741: sub modifyuserauth {
1742: my ($udom,$uname,$umode,$upass)=@_;
1743: my $uhome=&homeserver($uname,$udom);
1744: &logthis('Call to modify user authentication'.$udom.', '.$uname.', '.
1745: $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'});
1746: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
1747: &escape($upass),$uhome);
1748: unless ($reply eq 'ok') {
1749: return 'error: '.$reply;
1750: }
1751: return 'ok';
1752: }
1753:
1754: # --------------------------------------------------------------- Modify a user
1755:
1756:
1757: sub modifyuser {
1758: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene)=@_;
1759: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1760: $umode.', '.$first.', '.$middle.', '.
1761: $last.', '.$gene.' by '.
1762: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1763: my $uhome=&homeserver($uname,$udom);
1764: # ----------------------------------------------------------------- Create User
1765: if (($uhome eq 'no_host') && ($umode) && ($upass)) {
1766: my $unhome='';
1767: if ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1768: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1769: } else {
1770: my $tryserver;
1771: my $loadm=10000000;
1772: foreach $tryserver (keys %libserv) {
1773: if ($hostdom{$tryserver} eq $udom) {
1774: my $answer=reply('load',$tryserver);
1775: if (($answer=~/\d+/) && ($answer<$loadm)) {
1776: $loadm=$answer;
1777: $unhome=$tryserver;
1778: }
1779: }
1780: }
1781: }
1782: if (($unhome eq '') || ($unhome eq 'no_host')) {
1783: return 'error: find home';
1784: }
1785: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
1786: &escape($upass),$unhome);
1787: unless ($reply eq 'ok') {
1788: return 'error: '.$reply;
1789: }
1790: $uhome=&homeserver($uname,$udom);
1791: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1792: return 'error: verify home';
1793: }
1794: }
1795: # ---------------------------------------------------------------------- Add ID
1796: if ($uid) {
1797: $uid=~tr/A-Z/a-z/;
1798: my %uidhash=&idrget($udom,$uname);
1799: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)) {
1800: unless ($uid eq $uidhash{$uname}) {
1801: return 'error: mismatch '.$uidhash{$uname}.' versus '.$uid;
1802: }
1803: } else {
1804: &idput($udom,($uname => $uid));
1805: }
1806: }
1807: # -------------------------------------------------------------- Add names, etc
1808: my %names=&get('environment',
1809: ['firstname','middlename','lastname','generation'],
1810: $udom,$uname);
1811: if ($first) { $names{'firstname'} = $first; }
1812: if ($middle) { $names{'middlename'} = $middle; }
1813: if ($last) { $names{'lastname'} = $last; }
1814: if ($gene) { $names{'generation'} = $gene; }
1815: my $reply = &put('environment', \%names, $udom,$uname);
1816: if ($reply ne 'ok') { return 'error: '.$reply; }
1817: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1818: $umode.', '.$first.', '.$middle.', '.
1819: $last.', '.$gene.' by '.
1820: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1821: return 'ok';
1822: }
1823:
1824: # -------------------------------------------------------------- Modify student
1825:
1826: sub modifystudent {
1827: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1828: $end,$start)=@_;
1829: my $cid='';
1830: unless ($cid=$ENV{'request.course.id'}) {
1831: return 'not_in_class';
1832: }
1833: # --------------------------------------------------------------- Make the user
1834: my $reply=&modifyuser
1835: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene);
1836: unless ($reply eq 'ok') { return $reply; }
1837: my $uhome=&homeserver($uname,$udom);
1838: if (($uhome eq '') || ($uhome eq 'no_host')) {
1839: return 'error: no such user';
1840: }
1841: # -------------------------------------------------- Add student to course list
1842: $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1843: $ENV{'course.'.$cid.'.num'}.':classlist:'.
1844: &escape($uname.':'.$udom).'='.
1845: &escape($end.':'.$start),
1846: $ENV{'course.'.$cid.'.home'});
1847: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
1848: return 'error: '.$reply;
1849: }
1850: # ---------------------------------------------------- Add student role to user
1851: my $uurl='/'.$cid;
1852: $uurl=~s/\_/\//g;
1853: if ($usec) {
1854: $uurl.='/'.$usec;
1855: }
1856: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1857: }
1858:
1859: # ------------------------------------------------- Write to course preferences
1860:
1861: sub writecoursepref {
1862: my ($courseid,%prefs)=@_;
1863: $courseid=~s/^\///;
1864: $courseid=~s/\_/\//g;
1865: my ($cdomain,$cnum)=split(/\//,$courseid);
1866: my $chome=homeserver($cnum,$cdomain);
1867: if (($chome eq '') || ($chome eq 'no_host')) {
1868: return 'error: no such course';
1869: }
1870: my $cstring='';
1871: map {
1872: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1873: } keys %prefs;
1874: $cstring=~s/\&$//;
1875: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
1876: }
1877:
1878: # ---------------------------------------------------------- Make/modify course
1879:
1880: sub createcourse {
1881: my ($udom,$description,$url)=@_;
1882: $url=&declutter($url);
1883: my $cid='';
1884: unless (&allowed('ccc',$ENV{'user.domain'})) {
1885: return 'refused';
1886: }
1887: unless ($udom eq $ENV{'user.domain'}) {
1888: return 'refused';
1889: }
1890: # ------------------------------------------------------------------- Create ID
1891: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1892: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1893: # ----------------------------------------------- Make sure that does not exist
1894: my $uhome=&homeserver($uname,$udom);
1895: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1896: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1897: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1898: $uhome=&homeserver($uname,$udom);
1899: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1900: return 'error: unable to generate unique course-ID';
1901: }
1902: }
1903: # ------------------------------------------------------------- Make the course
1904: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1905: $ENV{'user.home'});
1906: unless ($reply eq 'ok') { return 'error: '.$reply; }
1907: $uhome=&homeserver($uname,$udom);
1908: if (($uhome eq '') || ($uhome eq 'no_host')) {
1909: return 'error: no such course';
1910: }
1911: &writecoursepref($udom.'_'.$uname,
1912: ('description' => $description,
1913: 'url' => $url));
1914: return '/'.$udom.'/'.$uname;
1915: }
1916:
1917: # ---------------------------------------------------------- Assign Custom Role
1918:
1919: sub assigncustomrole {
1920: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
1921: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1922: $end,$start);
1923: }
1924:
1925: # ----------------------------------------------------------------- Revoke Role
1926:
1927: sub revokerole {
1928: my ($udom,$uname,$url,$role)=@_;
1929: my $now=time;
1930: return &assignrole($udom,$uname,$url,$role,$now);
1931: }
1932:
1933: # ---------------------------------------------------------- Revoke Custom Role
1934:
1935: sub revokecustomrole {
1936: my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
1937: my $now=time;
1938: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
1939: }
1940:
1941: # ------------------------------------------------------------ Directory lister
1942:
1943: sub dirlist {
1944: my $uri=shift;
1945: $uri=~s/^\///;
1946: $uri=~s/\/$//;
1947: my ($res,$udom,$uname,@rest)=split(/\//,$uri);
1948: if ($udom) {
1949: if ($uname) {
1950: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
1951: homeserver($uname,$udom));
1952: return split(/:/,$listing);
1953: } else {
1954: my $tryserver;
1955: my %allusers=();
1956: foreach $tryserver (keys %libserv) {
1957: if ($hostdom{$tryserver} eq $udom) {
1958: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
1959: $tryserver);
1960: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
1961: && ($listing ne 'con_lost')) {
1962: map {
1963: my ($entry,@stat)=split(/&/,$_);
1964: $allusers{$entry}=1;
1965: } split(/:/,$listing);
1966: }
1967: }
1968: }
1969: my $alluserstr='';
1970: map {
1971: $alluserstr.=$_.'&user:';
1972: } sort keys %allusers;
1973: $alluserstr=~s/:$//;
1974: return split(/:/,$alluserstr);
1975: }
1976: } else {
1977: my $tryserver;
1978: my %alldom=();
1979: foreach $tryserver (keys %libserv) {
1980: $alldom{$hostdom{$tryserver}}=1;
1981: }
1982: my $alldomstr='';
1983: map {
1984: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
1985: } sort keys %alldom;
1986: $alldomstr=~s/:$//;
1987: return split(/:/,$alldomstr);
1988: }
1989: }
1990:
1991: # -------------------------------------------------------- Value of a Condition
1992:
1993: sub directcondval {
1994: my $number=shift;
1995: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
1996: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
1997: } else {
1998: return 2;
1999: }
2000: }
2001:
2002: sub condval {
2003: my $condidx=shift;
2004: my $result=0;
2005: my $allpathcond='';
2006: map {
2007: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
2008: $allpathcond.=
2009: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
2010: }
2011: } split(/\|/,$condidx);
2012: $allpathcond=~s/\|$//;
2013: if ($ENV{'request.course.id'}) {
2014: if ($allpathcond) {
2015: my $operand='|';
2016: my @stack;
2017: map {
2018: if ($_ eq '(') {
2019: push @stack,($operand,$result)
2020: } elsif ($_ eq ')') {
2021: my $before=pop @stack;
2022: if (pop @stack eq '&') {
2023: $result=$result>$before?$before:$result;
2024: } else {
2025: $result=$result>$before?$result:$before;
2026: }
2027: } elsif (($_ eq '&') || ($_ eq '|')) {
2028: $operand=$_;
2029: } else {
2030: my $new=directcondval($_);
2031: if ($operand eq '&') {
2032: $result=$result>$new?$new:$result;
2033: } else {
2034: $result=$result>$new?$result:$new;
2035: }
2036: }
2037: } ($allpathcond=~/(\d+|\(|\)|\&|\|)/g);
2038: }
2039: }
2040: return $result;
2041: }
2042:
2043: # --------------------------------------------------------- Value of a Variable
2044:
2045: sub EXT {
2046: my ($varname,$symbparm)=@_;
2047: unless ($varname) { return ''; }
2048: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
2049: my $rest;
2050: if ($therest[0]) {
2051: $rest=join('.',@therest);
2052: } else {
2053: $rest='';
2054: }
2055: my $qualifierrest=$qualifier;
2056: if ($rest) { $qualifierrest.='.'.$rest; }
2057: my $spacequalifierrest=$space;
2058: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
2059: if ($realm eq 'user') {
2060: # --------------------------------------------------------------- user.resource
2061: if ($space eq 'resource') {
2062: my %restored=&restore();
2063: return $restored{$qualifierrest};
2064: # ----------------------------------------------------------------- user.access
2065: } elsif ($space eq 'access') {
2066: return &allowed($qualifier,$rest);
2067: # ------------------------------------------ user.preferences, user.environment
2068: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
2069: return $ENV{join('.',('environment',$qualifierrest))};
2070: # ----------------------------------------------------------------- user.course
2071: } elsif ($space eq 'course') {
2072: return $ENV{join('.',('request.course',$qualifier))};
2073: # ------------------------------------------------------------------- user.role
2074: } elsif ($space eq 'role') {
2075: my ($role,$where)=split(/\./,$ENV{'request.role'});
2076: if ($qualifier eq 'value') {
2077: return $role;
2078: } elsif ($qualifier eq 'extent') {
2079: return $where;
2080: }
2081: # ----------------------------------------------------------------- user.domain
2082: } elsif ($space eq 'domain') {
2083: return $ENV{'user.domain'};
2084: # ------------------------------------------------------------------- user.name
2085: } elsif ($space eq 'name') {
2086: return $ENV{'user.name'};
2087: # ---------------------------------------------------- Any other user namespace
2088: } else {
2089: my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
2090: my %reply=&get($space,[$item]);
2091: return $reply{$item};
2092: }
2093: } elsif ($realm eq 'request') {
2094: # ------------------------------------------------------------- request.browser
2095: if ($space eq 'browser') {
2096: return $ENV{'browser.'.$qualifier};
2097: # ------------------------------------------------------------ request.filename
2098: } else {
2099: return $ENV{'request.'.$spacequalifierrest};
2100: }
2101: } elsif ($realm eq 'course') {
2102: # ---------------------------------------------------------- course.description
2103: return $ENV{'course.'.$ENV{'request.course.id'}.'.'.
2104: $spacequalifierrest};
2105: } elsif ($realm eq 'resource') {
2106: if ($ENV{'request.course.id'}) {
2107:
2108: # print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
2109:
2110:
2111: # ----------------------------------------------------- Cascading lookup scheme
2112: my $symbp;
2113: if ($symbparm) {
2114: $symbp=$symbparm;
2115: } else {
2116: $symbp=&symbread();
2117: }
2118: my $mapp=(split(/\_\_\_/,$symbp))[0];
2119:
2120: my $symbparm=$symbp.'.'.$spacequalifierrest;
2121: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
2122:
2123: my $seclevel=
2124: $ENV{'request.course.id'}.'.['.
2125: $ENV{'request.course.sec'}.'].'.$spacequalifierrest;
2126: my $seclevelr=
2127: $ENV{'request.course.id'}.'.['.
2128: $ENV{'request.course.sec'}.'].'.$symbparm;
2129: my $seclevelm=
2130: $ENV{'request.course.id'}.'.['.
2131: $ENV{'request.course.sec'}.'].'.$mapparm;
2132:
2133: my $courselevel=
2134: $ENV{'request.course.id'}.'.'.$spacequalifierrest;
2135: my $courselevelr=
2136: $ENV{'request.course.id'}.'.'.$symbparm;
2137: my $courselevelm=
2138: $ENV{'request.course.id'}.'.'.$mapparm;
2139:
2140: # ----------------------------------------------------------- first, check user
2141: my %resourcedata=get('resourcedata',
2142: [$courselevelr,$courselevelm,$courselevel]);
2143: if (($resourcedata{$courselevelr}!~/^error\:/) &&
2144: ($resourcedata{$courselevelr}!~/^con_lost/)) {
2145:
2146: if ($resourcedata{$courselevelr}) {
2147: return $resourcedata{$courselevelr}; }
2148: if ($resourcedata{$courselevelm}) {
2149: return $resourcedata{$courselevelm}; }
2150: if ($resourcedata{$courselevel}) { return $resourcedata{$courselevel}; }
2151:
2152: } else {
2153: if ($resourcedata{$courselevelr}!~/No such file/) {
2154: &logthis("<font color=blue>WARNING:".
2155: " Trying to get resource data for ".$ENV{'user.name'}." at "
2156: .$ENV{'user.domain'}.": ".$resourcedata{$courselevelr}.
2157: "</font>");
2158: }
2159: }
2160:
2161: # -------------------------------------------------------- second, check course
2162:
2163: my $reply=&reply('get:'.
2164: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.':'.
2165: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
2166: ':resourcedata:'.
2167: &escape($seclevelr).'&'.&escape($seclevelm).'&'.&escape($seclevel).'&'.
2168: &escape($courselevelr).'&'.&escape($courselevelm).'&'.&escape($courselevel),
2169: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
2170: if ($reply!~/^error\:/) {
2171: map {
2172: if ($_) { return &unescape($_); }
2173: } split(/\&/,$reply);
2174: }
2175: if (($reply=~/^con_lost/) || ($reply=~/^error\:/)) {
2176: &logthis("<font color=blue>WARNING:".
2177: " Getting ".$reply." asking for ".$varname." for ".
2178: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
2179: ' at '.
2180: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.
2181: ' from '.
2182: $ENV{'course.'.$ENV{'request.course.id'}.'.home'}.
2183: "</font>");
2184: }
2185: # ------------------------------------------------------ third, check map parms
2186: my %parmhash=();
2187: my $thisparm='';
2188: if (tie(%parmhash,'GDBM_File',
2189: $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER,0640)) {
2190: $thisparm=$parmhash{$symbparm};
2191: untie(%parmhash);
2192: }
2193: if ($thisparm) { return $thisparm; }
2194: }
2195:
2196: # --------------------------------------------- last, look in resource metadata
2197:
2198: $spacequalifierrest=~s/\./\_/;
2199: my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest);
2200: if ($metadata) { return $metadata; }
2201: $metadata=&metadata($ENV{'request.filename'},
2202: 'parameter_'.$spacequalifierrest);
2203: if ($metadata) { return $metadata; }
2204:
2205: # ------------------------------------------------------------------ Cascade up
2206:
2207: unless ($space eq '0') {
2208: my ($part,$id)=split(/\_/,$space);
2209: if ($id) {
2210: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
2211: $symbparm);
2212: if ($partgeneral) { return $partgeneral; }
2213: } else {
2214: my $resourcegeneral=&EXT('resource.0.'.$qualifierrest,
2215: $symbparm);
2216: if ($resourcegeneral) { return $resourcegeneral; }
2217: }
2218: }
2219:
2220: # ---------------------------------------------------- Any other user namespace
2221: } elsif ($realm eq 'environment') {
2222: # ----------------------------------------------------------------- environment
2223: return $ENV{'environment.'.$spacequalifierrest};
2224: } elsif ($realm eq 'system') {
2225: # ----------------------------------------------------------------- system.time
2226: if ($space eq 'time') {
2227: return time;
2228: }
2229: }
2230: return '';
2231: }
2232:
2233: # ---------------------------------------------------------------- Get metadata
2234:
2235: sub metadata {
2236: my ($uri,$what,$liburi,$prefix)=@_;
2237:
2238: $uri=&declutter($uri);
2239: my $filename=$uri;
2240: $uri=~s/\.meta$//;
2241: #
2242: # Is the metadata already cached?
2243: # If "keys" are set, the assumption is that everything is already cached.
2244: # Everything is cached by the main uri, libraries are never directly cached
2245: #
2246: unless ($metacache{$uri.':keys'}) {
2247: #
2248: # Is this a recursive call for a library?
2249: #
2250: if ($liburi) {
2251: $liburi=&declutter($liburi);
2252: $filename=$liburi;
2253: }
2254: my %metathesekeys=();
2255: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
2256: my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
2257: my $parser=HTML::TokeParser->new(\$metastring);
2258: my $token;
2259: undef %metathesekeys;
2260: while ($token=$parser->get_token) {
2261: if ($token->[0] eq 'S') {
2262: if (defined($token->[2]->{'package'})) {
2263: #
2264: # This is a package - get package info
2265: #
2266: my $package=$token->[2]->{'package'};
2267: my $keyroot='';
2268: if ($prefix) {
2269: $keyroot.='_'.$prefix;
2270: } else {
2271: if (defined($token->[2]->{'part'})) {
2272: $keyroot.='_'.$token->[2]->{'part'};
2273: }
2274: }
2275: if (defined($token->[2]->{'id'})) {
2276: $keyroot.='_'.$token->[2]->{'id'};
2277: }
2278: if ($metacache{$uri.':packages'}) {
2279: $metacache{$uri.':packages'}.=','.$package.$keyroot;
2280: } else {
2281: $metacache{$uri.':packages'}=$package.$keyroot;
2282: }
2283: map {
2284: if ($_=~/^$package\&/) {
2285: my ($pack,$name,$subp)=split(/\&/,$_);
2286: my $value=$packagetab{$_};
2287: my $part=$keyroot;
2288: $part=~s/^\_//;
2289: if ($subp eq 'display') {
2290: $value.=' [Part: '.$part.']';
2291: }
2292: my $unikey='parameter'.$keyroot.'_'.$name;
2293: $metathesekeys{$unikey}=1;
2294: $metacache{$uri.':'.$unikey.'.part'}=$part;
2295: unless
2296: (defined($metacache{$uri.':'.$unikey.'.'.$subp})) {
2297: $metacache{$uri.':'.$unikey.'.'.$subp}=$value;
2298: }
2299: }
2300: } keys %packagetab;
2301: } else {
2302: #
2303: # This is not a package - some other kind of start tag
2304: #
2305: my $entry=$token->[1];
2306: if ($entry eq 'import') {
2307: #
2308: # Importing a library here
2309: #
2310: my $libid=$token->[2]->{'id'};
2311:
2312:
2313: } else {
2314: my $unikey=$entry;
2315: if ($prefix) {
2316: $unikey.='_'.$prefix;
2317: } else {
2318: if (defined($token->[2]->{'part'})) {
2319: $unikey.='_'.$token->[2]->{'part'};
2320: }
2321: }
2322: if (defined($token->[2]->{'id'})) {
2323: $unikey.='_'.$token->[2]->{'id'};
2324: }
2325: if (defined($token->[2]->{'name'})) {
2326: $unikey.='_'.$token->[2]->{'name'};
2327: }
2328: $metathesekeys{$unikey}=1;
2329: map {
2330: $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_};
2331: } @{$token->[3]};
2332: unless (
2333: $metacache{$uri.':'.$unikey}=$parser->get_text('/'.$entry)
2334: ) { $metacache{$uri.':'.$unikey}=
2335: $metacache{$uri.':'.$unikey.'.default'};
2336: }
2337: # end of not-a-package not-a-library import
2338: }
2339: # end of not-a-package start tag
2340: }
2341: # the next is the end of "start tag"
2342: }
2343: }
2344: $metacache{$uri.':keys'}=join(',',keys %metathesekeys);
2345: }
2346: return $metacache{$uri.':'.$what};
2347: }
2348:
2349: # ------------------------------------------------- Update symbolic store links
2350:
2351: sub symblist {
2352: my ($mapname,%newhash)=@_;
2353: $mapname=declutter($mapname);
2354: my %hash;
2355: if (($ENV{'request.course.fn'}) && (%newhash)) {
2356: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
2357: &GDBM_WRCREAT,0640)) {
2358: map {
2359: $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
2360: } keys %newhash;
2361: if (untie(%hash)) {
2362: return 'ok';
2363: }
2364: }
2365: }
2366: return 'error';
2367: }
2368:
2369: # ------------------------------------------------------ Return symb list entry
2370:
2371: sub symbread {
2372: my $thisfn=shift;
2373: unless ($thisfn) {
2374: $thisfn=$ENV{'request.filename'};
2375: }
2376: $thisfn=declutter($thisfn);
2377: my %hash;
2378: my %bighash;
2379: my $syval='';
2380: if (($ENV{'request.course.fn'}) && ($thisfn)) {
2381: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
2382: &GDBM_READER,0640)) {
2383: $syval=$hash{$thisfn};
2384: untie(%hash);
2385: }
2386: # ---------------------------------------------------------- There was an entry
2387: if ($syval) {
2388: unless ($syval=~/\_\d+$/) {
2389: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
2390: &appenv('request.ambiguous' => $thisfn);
2391: return '';
2392: }
2393: $syval.=$1;
2394: }
2395: } else {
2396: # ------------------------------------------------------- Was not in symb table
2397: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
2398: &GDBM_READER,0640)) {
2399: # ---------------------------------------------- Get ID(s) for current resource
2400: my $ids=$bighash{'ids_/res/'.$thisfn};
2401: unless ($ids) {
2402: $ids=$bighash{'ids_/'.$thisfn};
2403: }
2404: if ($ids) {
2405: # ------------------------------------------------------------------- Has ID(s)
2406: my @possibilities=split(/\,/,$ids);
2407: if ($#possibilities==0) {
2408: # ----------------------------------------------- There is only one possibility
2409: my ($mapid,$resid)=split(/\./,$ids);
2410: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
2411: } else {
2412: # ------------------------------------------ There is more than one possibility
2413: my $realpossible=0;
2414: map {
2415: my $file=$bighash{'src_'.$_};
2416: if (&allowed('bre',$file)) {
2417: my ($mapid,$resid)=split(/\./,$_);
2418: if ($bighash{'map_type_'.$mapid} ne 'page') {
2419: $realpossible++;
2420: $syval=declutter($bighash{'map_id_'.$mapid}).
2421: '___'.$resid;
2422: }
2423: }
2424: } @possibilities;
2425: if ($realpossible!=1) { $syval=''; }
2426: }
2427: }
2428: untie(%bighash)
2429: }
2430: }
2431: if ($syval) {
2432: return $syval.'___'.$thisfn;
2433: }
2434: }
2435: &appenv('request.ambiguous' => $thisfn);
2436: return '';
2437: }
2438:
2439: # ---------------------------------------------------------- Return random seed
2440:
2441: sub numval {
2442: my $txt=shift;
2443: $txt=~tr/A-J/0-9/;
2444: $txt=~tr/a-j/0-9/;
2445: $txt=~tr/K-T/0-9/;
2446: $txt=~tr/k-t/0-9/;
2447: $txt=~tr/U-Z/0-5/;
2448: $txt=~tr/u-z/0-5/;
2449: $txt=~s/\D//g;
2450: return int($txt);
2451: }
2452:
2453: sub rndseed {
2454: my ($symb,$courseid,$domain,$username)=@_;
2455: if (!$symb) {
2456: unless ($symb=&symbread()) { return time; }
2457: }
2458: if (!$courseid) { $courseid=$ENV{'request.course.id'};}
2459: if (!$domain) {$domain=$ENV{'user.domain'};}
2460: if (!$username) {$username=$ENV{'user.name'};}
2461: {
2462: use integer;
2463: my $symbchck=unpack("%32C*",$symb) << 27;
2464: my $symbseed=numval($symb) << 22;
2465: my $namechck=unpack("%32C*",$username) << 17;
2466: my $nameseed=numval($username) << 12;
2467: my $domainseed=unpack("%32C*",$domain) << 7;
2468: my $courseseed=unpack("%32C*",$courseid);
2469: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
2470: #uncommenting these lines can break things!
2471: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
2472: #&Apache::lonxml::debug("rndseed :$num:$symb");
2473: return $num;
2474: }
2475: }
2476:
2477: sub ireceipt {
2478: my ($funame,$fudom,$fucourseid,$fusymb)=@_;
2479: my $cuname=unpack("%32C*",$funame);
2480: my $cudom=unpack("%32C*",$fudom);
2481: my $cucourseid=unpack("%32C*",$fucourseid);
2482: my $cusymb=unpack("%32C*",$fusymb);
2483: my $cunique=unpack("%32C*",$perlvar{'lonReceipt'});
2484: return unpack("%32C*",$perlvar{'lonHostID'}).'-'.
2485: ($cunique%$cuname+
2486: $cunique%$cudom+
2487: $cusymb%$cuname+
2488: $cusymb%$cudom+
2489: $cucourseid%$cuname+
2490: $cucourseid%$cudom);
2491: }
2492:
2493: sub receipt {
2494: return &ireceipt($ENV{'user.name'},$ENV{'user.domain'},
2495: $ENV{'request.course.id'},&symbread());
2496: }
2497:
2498: # ------------------------------------------------------------ Serves up a file
2499: # returns either the contents of the file or a -1
2500: sub getfile {
2501: my $file=shift;
2502: &repcopy($file);
2503: if (! -e $file ) { return -1; };
2504: my $fh=Apache::File->new($file);
2505: my $a='';
2506: while (<$fh>) { $a .=$_; }
2507: return $a
2508: }
2509:
2510: sub filelocation {
2511: my ($dir,$file) = @_;
2512: my $location;
2513: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
2514: if ($file=~m:^/~:) { # is a contruction space reference
2515: $location = $file;
2516: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
2517: } else {
2518: $file=~s/^$perlvar{'lonDocRoot'}//;
2519: $file=~s:^/*res::;
2520: if ( !( $file =~ m:^/:) ) {
2521: $location = $dir. '/'.$file;
2522: } else {
2523: $location = '/home/httpd/html/res'.$file;
2524: }
2525: }
2526: $location=~s://+:/:g; # remove duplicate /
2527: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
2528: return $location;
2529: }
2530:
2531: sub hreflocation {
2532: my ($dir,$file)=@_;
2533: unless (($_=~/^http:\/\//i) || ($_=~/^\//)) {
2534: my $finalpath=filelocation($dir,$file);
2535: $finalpath=~s/^\/home\/httpd\/html//;
2536: return $finalpath;
2537: } else {
2538: return $file;
2539: }
2540: }
2541:
2542: # ------------------------------------------------------------- Declutters URLs
2543:
2544: sub declutter {
2545: my $thisfn=shift;
2546: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
2547: $thisfn=~s/^\///;
2548: $thisfn=~s/^res\///;
2549: return $thisfn;
2550: }
2551:
2552: # -------------------------------------------------------- Escape Special Chars
2553:
2554: sub escape {
2555: my $str=shift;
2556: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
2557: return $str;
2558: }
2559:
2560: # ----------------------------------------------------- Un-Escape Special Chars
2561:
2562: sub unescape {
2563: my $str=shift;
2564: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2565: return $str;
2566: }
2567:
2568: # ================================================================ Main Program
2569:
2570: sub BEGIN {
2571: unless ($readit) {
2572: # ------------------------------------------------------------ Read access.conf
2573: {
2574: my $config=Apache::File->new("/etc/httpd/conf/access.conf");
2575:
2576: while (my $configline=<$config>) {
2577: if ($configline =~ /PerlSetVar/) {
2578: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
2579: chomp($varvalue);
2580: $perlvar{$varname}=$varvalue;
2581: }
2582: }
2583: }
2584:
2585: # ------------------------------------------------------------- Read hosts file
2586: {
2587: my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
2588:
2589: while (my $configline=<$config>) {
2590: chomp($configline);
2591: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
2592: $hostname{$id}=$name;
2593: $hostdom{$id}=$domain;
2594: $hostip{$id}=$ip;
2595: if ($role eq 'library') { $libserv{$id}=$name; }
2596: }
2597: }
2598:
2599: # ------------------------------------------------------ Read spare server file
2600: {
2601: my $config=Apache::File->new("$perlvar{'lonTabDir'}/spare.tab");
2602:
2603: while (my $configline=<$config>) {
2604: chomp($configline);
2605: if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
2606: $spareid{$configline}=1;
2607: }
2608: }
2609: }
2610: # ------------------------------------------------------------ Read permissions
2611: {
2612: my $config=Apache::File->new("$perlvar{'lonTabDir'}/roles.tab");
2613:
2614: while (my $configline=<$config>) {
2615: chomp($configline);
2616: if ($configline) {
2617: my ($role,$perm)=split(/ /,$configline);
2618: if ($perm ne '') { $pr{$role}=$perm; }
2619: }
2620: }
2621: }
2622:
2623: # -------------------------------------------- Read plain texts for permissions
2624: {
2625: my $config=Apache::File->new("$perlvar{'lonTabDir'}/rolesplain.tab");
2626:
2627: while (my $configline=<$config>) {
2628: chomp($configline);
2629: if ($configline) {
2630: my ($short,$plain)=split(/:/,$configline);
2631: if ($plain ne '') { $prp{$short}=$plain; }
2632: }
2633: }
2634: }
2635:
2636: # ---------------------------------------------------------- Read package table
2637: {
2638: my $config=Apache::File->new("$perlvar{'lonTabDir'}/packages.tab");
2639:
2640: while (my $configline=<$config>) {
2641: chomp($configline);
2642: my ($short,$plain)=split(/:/,$configline);
2643: my ($pack,$name)=split(/\&/,$short);
2644: if ($plain ne '') {
2645: $packagetab{$pack.'&'.$name.'&name'}=$name;
2646: $packagetab{$short}=$plain;
2647: }
2648: }
2649: }
2650:
2651: # ------------------------------------------------------------- Read file types
2652: {
2653: my $config=Apache::File->new("$perlvar{'lonTabDir'}/filetypes.tab");
2654:
2655: while (my $configline=<$config>) {
2656: chomp($configline);
2657: my ($ending,$emb,@descr)=split(/\s+/,$configline);
2658: if ($descr[0] ne '') {
2659: $fe{$ending}=$emb;
2660: $fd{$ending}=join(' ',@descr);
2661: }
2662: }
2663: }
2664:
2665: %metacache=();
2666:
2667: $readit='done';
2668: &logtouch();
2669: &logthis('<font color=yellow>INFO: Read configuration</font>');
2670: }
2671: }
2672: 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