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