Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.86
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
4: # Functions for use by content handlers:
5: #
6: # plaintext(short) : plain text explanation of short term
1.25 www 7: # fileembstyle(ext) : embed style in page for file extension
8: # filedescription(ext) : descriptor text for file extension
1.29 www 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
1.21 www 15: # definerole(rolename,sys,dom,cou) : define a custom role rolename
16: # set priviledges in format of lonTabs/roles.tab for
17: # system, domain and course level,
18: # assignrole(udom,uname,url,role,end,start) : give a role to a user for the
19: # level given by url. Optional start and end dates
20: # (leave empty string or zero for "no date")
21: # assigncustomrole (udom,uname,url,rdom,rnam,rolename,end,start) : give a
22: # custom role to a user for the level given by url.
23: # Specify name and domain of role author, and role name
24: # revokerole (udom,uname,url,role) : Revoke a role for url
25: # revokecustomrole (udom,uname,url,rdom,rnam,rolename) : Revoke a custom role
1.24 www 26: # appenv(hash) : adds hash to session environment
1.56 www 27: # delenv(varname) : deletes all environment entries starting with varname
1.12 www 28: # store(hash) : stores hash permanently for this url
1.47 www 29: # cstore(hash) : critical store
1.12 www 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
1.38 www 33: # del(namesp,array) : deletes keys out of array from namesp
1.12 www 34: # put(namesp,hash) : stores hash in namesp
1.47 www 35: # cput(namesp,hash) : critical put
1.15 www 36: # dump(namesp) : dumps the complete namespace into a hash
1.23 www 37: # ssi(url,hash) : does a complete request cycle on url to localhost, posts
38: # hash
1.34 www 39: # coursedescription(id) : returns and caches course description for id
1.17 www 40: # repcopy(filename) : replicate file
41: # dirlist(url) : gets a directory listing
1.40 www 42: # directcondval(index) : reading condition value of single condition from
43: # state string
1.28 www 44: # condval(index) : value of condition index based on state
1.58 www 45: # EXT(name) : value of a variable
1.31 www 46: # symblist(map,hash) : Updates symbolic storage links
1.44 www 47: # symbread([filename]) : returns the data handle (filename optional)
1.76 www 48: # rndseed() : returns a random seed
49: # receipt() : returns a receipt to be given out to users
1.36 albertel 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
1.46 www 54: # hreflocation(dir,file) : same as filelocation, but for hrefs
1.47 www 55: # log(domain,user,home,msg) : write to permanent log for user
1.70 www 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
1.73 www 65: # metadata(file,entry): returns the metadata entry for a file. entry='keys'
66: # returns a comma separated list of keys
1.12 www 67: #
1.1 albertel 68: # 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
1.5 www 69: # 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
1.8 www 70: # 11/8,11/16,11/18,11/22,11/23,12/22,
1.12 www 71: # 01/06,01/13,02/24,02/28,02/29,
72: # 03/01,03/02,03/06,03/07,03/13,
1.15 www 73: # 04/05,05/29,05/31,06/01,
74: # 06/05,06/26 Gerd Kortemeyer
75: # 06/26 Ben Tyszka
1.22 www 76: # 06/30,07/15,07/17,07/18,07/20,07/21,07/22,07/25 Gerd Kortemeyer
1.23 www 77: # 08/14 Ben Tyszka
1.36 albertel 78: # 08/22,08/28,08/31,09/01,09/02,09/04,09/05,09/25,09/28,09/30 Gerd Kortemeyer
1.35 www 79: # 10/04 Gerd Kortemeyer
1.36 albertel 80: # 10/04 Guy Albertelli
1.54 www 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,
1.71 www 82: # 10/30,10/31,
1.75 www 83: # 11/2,11/14,11/15,11/16,11/20,11/21,11/22,11/25,11/27,
1.83 www 84: # 12/02,12/12,12/13,12/14,12/28,12/29 Gerd Kortemeyer
1.1 albertel 85:
86: package Apache::lonnet;
87:
88: use strict;
89: use Apache::File;
1.8 www 90: use LWP::UserAgent();
1.15 www 91: use HTTP::Headers;
1.11 www 92: use vars
1.77 www 93: qw(%perlvar %hostname %homecache %spareid %hostdom %libserv %pr %prp %fe %fd $readit %metacache);
1.1 albertel 94: use IO::Socket;
1.31 www 95: use GDBM_File;
1.8 www 96: use Apache::Constants qw(:common :http);
1.71 www 97: use HTML::TokeParser;
1.1 albertel 98:
99: # --------------------------------------------------------------------- Logging
100:
101: sub logthis {
102: my $message=shift;
103: my $execdir=$perlvar{'lonDaemons'};
104: my $now=time;
105: my $local=localtime($now);
106: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
107: print $fh "$local ($$): $message\n";
108: return 1;
109: }
110:
111: sub logperm {
112: my $message=shift;
113: my $execdir=$perlvar{'lonDaemons'};
114: my $now=time;
115: my $local=localtime($now);
116: my $fh=Apache::File->new(">>$execdir/logs/lonnet.perm.log");
117: print $fh "$now:$message:$local\n";
118: return 1;
119: }
120:
121: # -------------------------------------------------- Non-critical communication
122: sub subreply {
123: my ($cmd,$server)=@_;
124: my $peerfile="$perlvar{'lonSockDir'}/$server";
125: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
126: Type => SOCK_STREAM,
127: Timeout => 10)
128: or return "con_lost";
129: print $client "$cmd\n";
130: my $answer=<$client>;
1.9 www 131: if (!$answer) { $answer="con_lost"; }
1.1 albertel 132: chomp($answer);
133: return $answer;
134: }
135:
136: sub reply {
137: my ($cmd,$server)=@_;
138: my $answer=subreply($cmd,$server);
139: if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
1.65 www 140: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.12 www 141: &logthis("<font color=blue>WARNING:".
142: " $cmd to $server returned $answer</font>");
143: }
1.1 albertel 144: return $answer;
145: }
146:
147: # ----------------------------------------------------------- Send USR1 to lonc
148:
149: sub reconlonc {
150: my $peerfile=shift;
151: &logthis("Trying to reconnect for $peerfile");
152: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
153: if (my $fh=Apache::File->new("$loncfile")) {
154: my $loncpid=<$fh>;
155: chomp($loncpid);
156: if (kill 0 => $loncpid) {
157: &logthis("lonc at pid $loncpid responding, sending USR1");
158: kill USR1 => $loncpid;
159: sleep 1;
160: if (-e "$peerfile") { return; }
161: &logthis("$peerfile still not there, give it another try");
162: sleep 5;
163: if (-e "$peerfile") { return; }
1.12 www 164: &logthis(
165: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 166: } else {
1.12 www 167: &logthis(
168: "<font color=blue>WARNING:".
169: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 170: }
171: } else {
1.12 www 172: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 173: }
174: }
175:
176: # ------------------------------------------------------ Critical communication
1.12 www 177:
1.1 albertel 178: sub critical {
179: my ($cmd,$server)=@_;
180: my $answer=reply($cmd,$server);
181: if ($answer eq 'con_lost') {
182: my $pingreply=reply('ping',$server);
183: &reconlonc("$perlvar{'lonSockDir'}/$server");
184: my $pongreply=reply('pong',$server);
185: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
186: $answer=reply($cmd,$server);
187: if ($answer eq 'con_lost') {
188: my $now=time;
189: my $middlename=$cmd;
1.5 www 190: $middlename=substr($middlename,0,16);
1.1 albertel 191: $middlename=~s/\W//g;
192: my $dfilename=
193: "$perlvar{'lonSockDir'}/delayed/$now.$middlename.$server";
194: {
195: my $dfh;
196: if ($dfh=Apache::File->new(">$dfilename")) {
1.7 www 197: print $dfh "$cmd\n";
1.1 albertel 198: }
199: }
200: sleep 2;
201: my $wcmd='';
202: {
203: my $dfh;
204: if ($dfh=Apache::File->new("$dfilename")) {
205: $wcmd=<$dfh>;
206: }
207: }
208: chomp($wcmd);
1.7 www 209: if ($wcmd eq $cmd) {
1.12 www 210: &logthis("<font color=blue>WARNING: ".
211: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 212: &logperm("D:$server:$cmd");
213: return 'con_delayed';
214: } else {
1.12 www 215: &logthis("<font color=red>CRITICAL:"
216: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 217: &logperm("F:$server:$cmd");
218: return 'con_failed';
219: }
220: }
221: }
222: return $answer;
223: }
224:
1.5 www 225: # ---------------------------------------------------------- Append Environment
226:
227: sub appenv {
1.6 www 228: my %newenv=@_;
1.35 www 229: map {
230: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
231: &logthis("<font color=blue>WARNING: ".
232: "Attempt to modify environment ".$_." to ".$newenv{$_});
233: delete($newenv{$_});
234: } else {
235: $ENV{$_}=$newenv{$_};
236: }
237: } keys %newenv;
1.6 www 238: my @oldenv;
239: {
240: my $fh;
241: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
1.5 www 242: return 'error';
1.6 www 243: }
244: @oldenv=<$fh>;
245: }
246: for (my $i=0; $i<=$#oldenv; $i++) {
247: chomp($oldenv[$i]);
1.9 www 248: if ($oldenv[$i] ne '') {
249: my ($name,$value)=split(/=/,$oldenv[$i]);
1.24 www 250: unless (defined($newenv{$name})) {
251: $newenv{$name}=$value;
252: }
1.9 www 253: }
1.6 www 254: }
255: {
256: my $fh;
257: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
258: return 'error';
259: }
260: my $newname;
1.86 ! albertel 261: flock($fh,'LOCK_EX');
1.6 www 262: foreach $newname (keys %newenv) {
263: print $fh "$newname=$newenv{$newname}\n";
264: }
1.86 ! albertel 265: $fh->close();
1.56 www 266: }
267: return 'ok';
268: }
269: # ----------------------------------------------------- Delete from Environment
270:
271: sub delenv {
272: my $delthis=shift;
273: my %newenv=();
274: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
275: &logthis("<font color=blue>WARNING: ".
276: "Attempt to delete from environment ".$delthis);
277: return 'error';
278: }
279: my @oldenv;
280: {
281: my $fh;
282: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
283: return 'error';
284: }
285: @oldenv=<$fh>;
286: }
287: {
288: my $fh;
289: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
290: return 'error';
291: }
292: map {
293: unless ($_=~/^$delthis/) { print $fh $_; }
294: } @oldenv;
1.5 www 295: }
296: return 'ok';
297: }
1.1 albertel 298:
299: # ------------------------------ Find server with least workload from spare.tab
1.11 www 300:
1.1 albertel 301: sub spareserver {
302: my $tryserver;
303: my $spareserver='';
304: my $lowestserver=100;
305: foreach $tryserver (keys %spareid) {
306: my $answer=reply('load',$tryserver);
307: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
308: $spareserver="http://$hostname{$tryserver}";
309: $lowestserver=$answer;
310: }
311: }
312: return $spareserver;
313: }
314:
315: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 316:
1.1 albertel 317: sub authenticate {
318: my ($uname,$upass,$udom)=@_;
1.12 www 319: $upass=escape($upass);
1.1 albertel 320: if (($perlvar{'lonRole'} eq 'library') &&
321: ($udom eq $perlvar{'lonDefDomain'})) {
1.3 www 322: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$perlvar{'lonHostID'});
1.2 www 323: if ($answer =~ /authorized/) {
1.9 www 324: if ($answer eq 'authorized') {
325: &logthis("User $uname at $udom authorized by local server");
326: return $perlvar{'lonHostID'};
327: }
328: if ($answer eq 'non_authorized') {
329: &logthis("User $uname at $udom rejected by local server");
330: return 'no_host';
331: }
1.2 www 332: }
1.1 albertel 333: }
334:
335: my $tryserver;
336: foreach $tryserver (keys %libserv) {
337: if ($hostdom{$tryserver} eq $udom) {
1.10 www 338: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$tryserver);
1.1 albertel 339: if ($answer =~ /authorized/) {
1.9 www 340: if ($answer eq 'authorized') {
341: &logthis("User $uname at $udom authorized by $tryserver");
342: return $tryserver;
343: }
344: if ($answer eq 'non_authorized') {
345: &logthis("User $uname at $udom rejected by $tryserver");
346: return 'no_host';
347: }
1.1 albertel 348: }
349: }
1.9 www 350: }
351: &logthis("User $uname at $udom could not be authenticated");
1.1 albertel 352: return 'no_host';
353: }
354:
355: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 356:
1.1 albertel 357: sub homeserver {
358: my ($uname,$udom)=@_;
359:
360: my $index="$uname:$udom";
361: if ($homecache{$index}) { return "$homecache{$index}"; }
362:
363: my $tryserver;
364: foreach $tryserver (keys %libserv) {
365: if ($hostdom{$tryserver} eq $udom) {
366: my $answer=reply("home:$udom:$uname",$tryserver);
367: if ($answer eq 'found') {
368: $homecache{$index}=$tryserver;
369: return $tryserver;
370: }
371: }
372: }
373: return 'no_host';
1.70 www 374: }
375:
376: # ------------------------------------- Find the usernames behind a list of IDs
377:
378: sub idget {
379: my ($udom,@ids)=@_;
380: my %returnhash=();
381:
382: my $tryserver;
383: foreach $tryserver (keys %libserv) {
384: if ($hostdom{$tryserver} eq $udom) {
385: my $idlist=join('&',@ids);
386: $idlist=~tr/A-Z/a-z/;
387: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
388: my @answer=();
1.76 www 389: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 390: @answer=split(/\&/,$reply);
391: } ;
392: my $i;
393: for ($i=0;$i<=$#ids;$i++) {
394: if ($answer[$i]) {
395: $returnhash{$ids[$i]}=$answer[$i];
396: }
397: }
398: }
399: }
400: return %returnhash;
401: }
402:
403: # ------------------------------------- Find the IDs behind a list of usernames
404:
405: sub idrget {
406: my ($udom,@unames)=@_;
407: my %returnhash=();
408: map {
409: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
410: } @unames;
411: return %returnhash;
412: }
413:
414: # ------------------------------- Store away a list of names and associated IDs
415:
416: sub idput {
417: my ($udom,%ids)=@_;
418: my %servers=();
419: map {
420: my $uhom=&homeserver($_,$udom);
421: if ($uhom ne 'no_host') {
422: my $id=&escape($ids{$_});
423: $id=~tr/A-Z/a-z/;
424: my $unam=&escape($_);
425: if ($servers{$uhom}) {
426: $servers{$uhom}.='&'.$id.'='.$unam;
427: } else {
428: $servers{$uhom}=$id.'='.$unam;
429: }
430: &critical('put:'.$udom.':'.$unam.':environment:id='.$id,$uhom);
431: }
432: } keys %ids;
433: map {
434: &critical('idput:'.$udom.':'.$servers{$_},$_);
435: } keys %servers;
436: }
437:
438: # ------------------------------------- Find the section of student in a course
439:
440: sub usection {
441: my ($udom,$unam,$courseid)=@_;
442: $courseid=~s/\_/\//g;
443: $courseid=~s/^(\w)/\/$1/;
444: map {
445: my ($key,$value)=split(/\=/,$_);
446: $key=&unescape($key);
447: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
448: my $section=$1;
449: if ($key eq $courseid.'_st') { $section=''; }
450: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
451: my $now=time;
452: my $notactive=0;
453: if ($start) {
454: if ($now<$start) { $notactive=1; }
455: }
456: if ($end) {
457: if ($now>$end) { $notactive=1; }
458: }
459: unless ($notactive) { return $section; }
460: }
461: } split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
462: &homeserver($unam,$udom)));
463: return '-1';
464: }
465:
466: # ------------------------------------- Read an entry from a user's environment
467:
468: sub userenvironment {
469: my ($udom,$unam,@what)=@_;
470: my %returnhash=();
471: my @answer=split(/\&/,
472: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
473: &homeserver($unam,$udom)));
474: my $i;
475: for ($i=0;$i<=$#what;$i++) {
476: $returnhash{$what[$i]}=&unescape($answer[$i]);
477: }
478: return %returnhash;
1.1 albertel 479: }
480:
481: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 482:
1.1 albertel 483: sub subscribe {
484: my $fname=shift;
485: my $author=$fname;
486: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
487: my ($udom,$uname)=split(/\//,$author);
488: my $home=homeserver($uname,$udom);
489: if (($home eq 'no_host') || ($home eq $perlvar{'lonHostID'})) {
490: return 'not_found';
491: }
492: my $answer=reply("sub:$fname",$home);
1.64 www 493: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
494: $answer.=' by '.$home;
495: }
1.1 albertel 496: return $answer;
497: }
498:
1.8 www 499: # -------------------------------------------------------------- Replicate file
500:
501: sub repcopy {
502: my $filename=shift;
1.23 www 503: $filename=~s/\/+/\//g;
1.8 www 504: my $transname="$filename.in.transfer";
1.17 www 505: if ((-e $filename) || (-e $transname)) { return OK; }
1.8 www 506: my $remoteurl=subscribe($filename);
1.64 www 507: if ($remoteurl =~ /^con_lost by/) {
508: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 509: return HTTP_SERVICE_UNAVAILABLE;
510: } elsif ($remoteurl eq 'not_found') {
511: &logthis("Subscribe returned not_found: $filename");
512: return HTTP_NOT_FOUND;
1.64 www 513: } elsif ($remoteurl =~ /^rejected by/) {
514: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 515: return FORBIDDEN;
1.20 www 516: } elsif ($remoteurl eq 'directory') {
517: return OK;
1.8 www 518: } else {
519: my @parts=split(/\//,$filename);
520: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
521: if ($path ne "$perlvar{'lonDocRoot'}/res") {
522: &logthis("Malconfiguration for replication: $filename");
523: return HTTP_BAD_REQUEST;
524: }
525: my $count;
526: for ($count=5;$count<$#parts;$count++) {
527: $path.="/$parts[$count]";
528: if ((-e $path)!=1) {
529: mkdir($path,0777);
530: }
531: }
532: my $ua=new LWP::UserAgent;
533: my $request=new HTTP::Request('GET',"$remoteurl");
534: my $response=$ua->request($request,$transname);
535: if ($response->is_error()) {
536: unlink($transname);
537: my $message=$response->status_line;
1.12 www 538: &logthis("<font color=blue>WARNING:"
539: ." LWP get: $message: $filename</font>");
1.8 www 540: return HTTP_SERVICE_UNAVAILABLE;
541: } else {
1.16 www 542: if ($remoteurl!~/\.meta$/) {
543: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
544: my $mresponse=$ua->request($mrequest,$filename.'.meta');
545: if ($mresponse->is_error()) {
546: unlink($filename.'.meta');
547: &logthis(
548: "<font color=yellow>INFO: No metadata: $filename</font>");
549: }
550: }
1.8 www 551: rename($transname,$filename);
552: return OK;
553: }
554: }
555: }
556:
1.15 www 557: # --------------------------------------------------------- Server Side Include
558:
559: sub ssi {
560:
1.23 www 561: my ($fn,%form)=@_;
1.15 www 562:
563: my $ua=new LWP::UserAgent;
1.23 www 564:
565: my $request;
566:
567: if (%form) {
568: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
569: $request->content(join '&', map { "$_=$form{$_}" } keys %form);
570: } else {
571: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
572: }
573:
1.15 www 574: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
575: my $response=$ua->request($request);
576:
577: return $response->content;
578: }
579:
1.14 www 580: # ------------------------------------------------------------------------- Log
581:
582: sub log {
583: my ($dom,$nam,$hom,$what)=@_;
1.47 www 584: return critical("log:$dom:$nam:$what",$hom);
1.14 www 585: }
586:
1.9 www 587: # ----------------------------------------------------------------------- Store
588:
589: sub store {
1.31 www 590: my %storehash=@_;
591: my $symb;
1.44 www 592: unless ($symb=escape(&symbread())) { return ''; }
1.31 www 593: my $namespace;
1.33 www 594: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
1.12 www 595: my $namevalue='';
596: map {
597: $namevalue.=escape($_).'='.escape($storehash{$_}).'&';
598: } keys %storehash;
599: $namevalue=~s/\&$//;
1.31 www 600: return reply(
601: "store:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb:$namevalue",
1.12 www 602: "$ENV{'user.home'}");
1.9 www 603: }
604:
1.47 www 605: # -------------------------------------------------------------- Critical Store
606:
607: sub cstore {
608: my %storehash=@_;
609: my $symb;
610: unless ($symb=escape(&symbread())) { return ''; }
611: my $namespace;
612: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
613: my $namevalue='';
614: map {
615: $namevalue.=escape($_).'='.escape($storehash{$_}).'&';
616: } keys %storehash;
617: $namevalue=~s/\&$//;
618: return critical(
619: "store:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb:$namevalue",
620: "$ENV{'user.home'}");
621: }
622:
1.9 www 623: # --------------------------------------------------------------------- Restore
624:
625: sub restore {
1.31 www 626: my $symb;
1.44 www 627: unless ($symb=escape(&symbread())) { return ''; }
1.31 www 628: my $namespace;
1.33 www 629: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
1.31 www 630: my $answer=reply(
631: "restore:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb",
632: "$ENV{'user.home'}");
1.12 www 633: my %returnhash=();
634: map {
635: my ($name,$value)=split(/\=/,$_);
636: $returnhash{&unescape($name)}=&unescape($value);
637: } split(/\&/,$answer);
1.75 www 638: my $version;
639: for ($version=1;$version<=$returnhash{'version'};$version++) {
640: map {
641: $returnhash{$_}=$returnhash{$version.':'.$_};
642: } split(/\:/,$returnhash{$version.':keys'});
643: }
1.13 www 644: return %returnhash;
1.34 www 645: }
646:
647: # ---------------------------------------------------------- Course Description
648:
649: sub coursedescription {
650: my $courseid=shift;
651: $courseid=~s/^\///;
1.49 www 652: $courseid=~s/\_/\//g;
1.34 www 653: my ($cdomain,$cnum)=split(/\//,$courseid);
654: my $chome=homeserver($cnum,$cdomain);
655: if ($chome ne 'no_host') {
656: my $rep=reply("dump:$cdomain:$cnum:environment",$chome);
657: if ($rep ne 'con_lost') {
1.54 www 658: my $normalid=$courseid;
659: $normalid=~s/\//\_/g;
1.53 www 660: my %envhash=();
1.34 www 661: my %returnhash=('home' => $chome,
662: 'domain' => $cdomain,
663: 'num' => $cnum);
664: map {
665: my ($name,$value)=split(/\=/,$_);
666: $name=&unescape($name);
667: $value=&unescape($value);
668: $returnhash{$name}=$value;
1.53 www 669: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.34 www 670: } split(/\&/,$rep);
671: $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
672: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 673: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.54 www 674: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.60 www 675: $envhash{'course.'.$normalid.'.home'}=$chome;
676: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
677: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.53 www 678: &appenv(%envhash);
1.34 www 679: return %returnhash;
680: }
681: }
682: return ();
1.9 www 683: }
1.1 albertel 684:
1.11 www 685: # -------------------------------------------------------- Get user priviledges
686:
687: sub rolesinit {
688: my ($domain,$username,$authhost)=@_;
689: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 690: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 691: my %allroles=();
692: my %thesepriv=();
693: my $now=time;
1.21 www 694: my $userroles="user.login.time=$now\n";
1.11 www 695: my $thesestr;
696:
697: if ($rolesdump ne '') {
698: map {
1.21 www 699: if ($_!~/^rolesdef\&/) {
1.11 www 700: my ($area,$role)=split(/=/,$_);
1.21 www 701: $area=~s/\_\w\w$//;
1.11 www 702: my ($trole,$tend,$tstart)=split(/_/,$role);
1.21 www 703: $userroles.='user.role.'.$trole.'.'.$area.'='.
704: $tstart.'.'.$tend."\n";
1.11 www 705: if ($tend!=0) {
706: if ($tend<$now) {
707: $trole='';
708: }
709: }
710: if ($tstart!=0) {
711: if ($tstart>$now) {
712: $trole='';
713: }
714: }
715: if (($area ne '') && ($trole ne '')) {
1.50 www 716: my $spec=$trole.'.'.$area;
1.12 www 717: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
718: if ($trole =~ /^cr\//) {
719: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
720: my $homsvr=homeserver($rauthor,$rdomain);
721: if ($hostname{$homsvr} ne '') {
722: my $roledef=
1.21 www 723: reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
1.12 www 724: $homsvr);
725: if (($roledef ne 'con_lost') && ($roledef ne '')) {
726: my ($syspriv,$dompriv,$coursepriv)=
1.21 www 727: split(/\_/,unescape($roledef));
1.50 www 728: $allroles{'cm./'}.=':'.$syspriv;
729: $allroles{$spec.'./'}.=':'.$syspriv;
1.12 www 730: if ($tdomain ne '') {
1.50 www 731: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
732: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
1.12 www 733: if ($trest ne '') {
1.50 www 734: $allroles{'cm.'.$area}.=':'.$coursepriv;
735: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
1.12 www 736: }
737: }
738: }
1.11 www 739: }
1.12 www 740: } else {
1.50 www 741: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
742: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
1.12 www 743: if ($tdomain ne '') {
1.50 www 744: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
745: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1.12 www 746: if ($trest ne '') {
1.50 www 747: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
748: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
1.12 www 749: }
750: }
1.11 www 751: }
1.12 www 752: }
753: }
1.11 www 754: } split(/&/,$rolesdump);
755: map {
756: %thesepriv=();
757: map {
758: if ($_ ne '') {
759: my ($priviledge,$restrictions)=split(/&/,$_);
760: if ($restrictions eq '') {
761: $thesepriv{$priviledge}='F';
762: } else {
763: if ($thesepriv{$priviledge} ne 'F') {
764: $thesepriv{$priviledge}.=$restrictions;
765: }
766: }
767: }
768: } split(/:/,$allroles{$_});
769: $thesestr='';
770: map { $thesestr.=':'.$_.'&'.$thesepriv{$_}; } keys %thesepriv;
771: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
772: } keys %allroles;
773: }
774: return $userroles;
775: }
776:
1.12 www 777: # --------------------------------------------------------------- get interface
778:
779: sub get {
780: my ($namespace,@storearr)=@_;
781: my $items='';
782: map {
783: $items.=escape($_).'&';
784: } @storearr;
785: $items=~s/\&$//;
786: my $rep=reply("get:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
787: $ENV{'user.home'});
1.15 www 788: my @pairs=split(/\&/,$rep);
789: my %returnhash=();
1.42 www 790: my $i=0;
1.15 www 791: map {
1.42 www 792: $returnhash{$_}=unescape($pairs[$i]);
793: $i++;
794: } @storearr;
1.15 www 795: return %returnhash;
1.27 www 796: }
797:
798: # --------------------------------------------------------------- del interface
799:
800: sub del {
801: my ($namespace,@storearr)=@_;
802: my $items='';
803: map {
804: $items.=escape($_).'&';
805: } @storearr;
806: $items=~s/\&$//;
807: return reply("del:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
808: $ENV{'user.home'});
1.15 www 809: }
810:
811: # -------------------------------------------------------------- dump interface
812:
813: sub dump {
814: my $namespace=shift;
815: my $rep=reply("dump:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace",
816: $ENV{'user.home'});
1.12 www 817: my @pairs=split(/\&/,$rep);
818: my %returnhash=();
819: map {
820: my ($key,$value)=split(/=/,$_);
1.29 www 821: $returnhash{unescape($key)}=unescape($value);
1.12 www 822: } @pairs;
823: return %returnhash;
824: }
825:
826: # --------------------------------------------------------------- put interface
827:
828: sub put {
829: my ($namespace,%storehash)=@_;
830: my $items='';
831: map {
832: $items.=escape($_).'='.escape($storehash{$_}).'&';
833: } keys %storehash;
834: $items=~s/\&$//;
835: return reply("put:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
1.47 www 836: $ENV{'user.home'});
837: }
838:
839: # ------------------------------------------------------ critical put interface
840:
841: sub cput {
842: my ($namespace,%storehash)=@_;
843: my $items='';
844: map {
845: $items.=escape($_).'='.escape($storehash{$_}).'&';
846: } keys %storehash;
847: $items=~s/\&$//;
848: return critical
849: ("put:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
1.12 www 850: $ENV{'user.home'});
851: }
852:
853: # -------------------------------------------------------------- eget interface
854:
855: sub eget {
856: my ($namespace,@storearr)=@_;
857: my $items='';
858: map {
859: $items.=escape($_).'&';
860: } @storearr;
861: $items=~s/\&$//;
862: my $rep=reply("eget:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
863: $ENV{'user.home'});
864: my @pairs=split(/\&/,$rep);
865: my %returnhash=();
1.42 www 866: my $i=0;
1.12 www 867: map {
1.42 www 868: $returnhash{$_}=unescape($pairs[$i]);
869: $i++;
870: } @storearr;
1.12 www 871: return %returnhash;
872: }
873:
874: # ------------------------------------------------- Check for a user priviledge
875:
876: sub allowed {
877: my ($priv,$uri)=@_;
1.52 www 878: $uri=&declutter($uri);
1.29 www 879:
1.54 www 880: # Free bre access to adm and meta resources
1.29 www 881:
1.54 www 882: if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 883: return 'F';
884: }
1.29 www 885:
1.52 www 886: my $thisallowed='';
887: my $statecond=0;
888: my $courseprivid='';
889:
890: # Course
891:
892: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/$priv\&([^\:]*)/) {
893: $thisallowed.=$1;
894: }
1.29 www 895:
1.52 www 896: # Domain
897:
898: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
899: =~/$priv\&([^\:]*)/) {
1.12 www 900: $thisallowed.=$1;
901: }
1.52 www 902:
903: # Course: uri itself is a course
1.66 www 904: my $courseuri=$uri;
905: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 906: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 907:
1.83 www 908: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.52 www 909: =~/$priv\&([^\:]*)/) {
1.12 www 910: $thisallowed.=$1;
911: }
1.29 www 912:
1.52 www 913: # Full access at system, domain or course-wide level? Exit.
1.29 www 914:
915: if ($thisallowed=~/F/) {
916: return 'F';
917: }
918:
1.52 www 919: # If this is generating or modifying users, exit with special codes
1.29 www 920:
1.52 www 921: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:'=~/\:$priv\:/) {
922: return $thisallowed;
923: }
924: #
925: # Gathered so far: system, domain and course wide priviledges
926: #
927: # Course: See if uri or referer is an individual resource that is part of
928: # the course
929:
930: if ($ENV{'request.course.id'}) {
931: $courseprivid=$ENV{'request.course.id'};
932: if ($ENV{'request.course.sec'}) {
933: $courseprivid.='/'.$ENV{'request.course.sec'};
934: }
935: $courseprivid=~s/\_/\//;
936: my $checkreferer=1;
937: my @uriparts=split(/\//,$uri);
938: my $filename=$uriparts[$#uriparts];
939: my $pathname=$uri;
940: $pathname=~s/\/$filename$//;
941: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.54 www 942: /\&$filename\:([\d\|]+)\&/) {
1.52 www 943: $statecond=$1;
944: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
945: =~/$priv\&([^\:]*)/) {
946: $thisallowed.=$1;
947: $checkreferer=0;
948: }
1.29 www 949: }
1.83 www 950:
1.52 www 951: if (($ENV{'HTTP_REFERER'}) && ($checkreferer)) {
1.55 www 952: my $refuri=$ENV{'HTTP_REFERER'};
953: $refuri=~s/^http\:\/\/$ENV{'request.host'}//i;
954: $refuri=&declutter($refuri);
1.53 www 955: my @uriparts=split(/\//,$refuri);
1.52 www 956: my $filename=$uriparts[$#uriparts];
1.53 www 957: my $pathname=$refuri;
1.52 www 958: $pathname=~s/\/$filename$//;
1.55 www 959: my @filenameparts=split(/\./,$uri);
1.53 www 960: if (&fileembstyle($filenameparts[$#filenameparts]) ne 'ssi') {
961: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.54 www 962: /\&$filename\:([\d\|]+)\&/) {
1.53 www 963: my $refstatecond=$1;
1.52 www 964: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
965: =~/$priv\&([^\:]*)/) {
966: $thisallowed.=$1;
1.53 www 967: $uri=$refuri;
968: $statecond=$refstatecond;
1.52 www 969: }
1.53 www 970: }
1.52 www 971: }
1.29 www 972: }
1.52 www 973: }
1.29 www 974:
1.52 www 975: #
976: # Gathered now: all priviledges that could apply, and condition number
977: #
978: #
979: # Full or no access?
980: #
1.29 www 981:
1.52 www 982: if ($thisallowed=~/F/) {
983: return 'F';
984: }
1.29 www 985:
1.52 www 986: unless ($thisallowed) {
987: return '';
988: }
1.29 www 989:
1.52 www 990: # Restrictions exist, deal with them
991: #
992: # C:according to course preferences
993: # R:according to resource settings
994: # L:unless locked
995: # X:according to user session state
996: #
997:
998: # Possibly locked functionality, check all courses
1.54 www 999: # Locks might take effect only after 10 minutes cache expiration for other
1000: # courses, and 2 minutes for current course
1.52 www 1001:
1002: my $envkey;
1003: if ($thisallowed=~/L/) {
1004: foreach $envkey (keys %ENV) {
1.54 www 1005: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
1006: my $courseid=$2;
1007: my $roleid=$1.'.'.$2;
1008: my $expiretime=600;
1009: if ($ENV{'request.role'} eq $roleid) {
1010: $expiretime=120;
1011: }
1012: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
1013: my $prefix='course.'.$cdom.'_'.$cnum.'.';
1014: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
1015: &coursedescription($courseid);
1016: }
1017: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,$csec\,/)
1018: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
1019: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 1020: &log($ENV{'user.domain'},$ENV{'user.name'},
1021: $ENV{'user.host'},
1022: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 1023: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1024: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1025: return '';
1026: }
1027: }
1.54 www 1028: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/)
1029: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
1030: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 1031: &log($ENV{'user.domain'},$ENV{'user.name'},
1032: $ENV{'user.host'},
1033: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 1034: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1035: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1036: return '';
1037: }
1038: }
1039: }
1.29 www 1040: }
1.52 www 1041: }
1042:
1043: #
1044: # Rest of the restrictions depend on selected course
1045: #
1046:
1047: unless ($ENV{'request.course.id'}) {
1048: return '1';
1049: }
1.29 www 1050:
1.52 www 1051: #
1052: # Now user is definitely in a course
1053: #
1.53 www 1054:
1055:
1056: # Course preferences
1057:
1058: if ($thisallowed=~/C/) {
1.54 www 1059: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1060: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1061: =~/\,$rolecode\,/) {
1.57 www 1062: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1063: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.54 www 1064: $ENV{'request.course.id'});
1065: return '';
1066: }
1.53 www 1067: }
1068:
1069: # Resource preferences
1070:
1071: if ($thisallowed=~/R/) {
1.54 www 1072: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1073: my $filename=$perlvar{'lonDocRoot'}.'/res/'.$uri.'.meta';
1074: if (-e $filename) {
1075: my @content;
1076: {
1077: my $fh=Apache::File->new($filename);
1078: @content=<$fh>;
1079: }
1080: if (join('',@content)=~
1081: /\<roledeny[^\>]*\>[^\<]*$rolecode[^\<]*\<\/roledeny\>/) {
1.57 www 1082: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1083: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.54 www 1084: return '';
1085:
1086: }
1087: }
1.53 www 1088: }
1.30 www 1089:
1.52 www 1090: # Restricted by state?
1.30 www 1091:
1.52 www 1092: if ($thisallowed=~/X/) {
1093: if (&condval($statecond)) {
1094: return '2';
1095: } else {
1096: return '';
1097: }
1098: }
1.30 www 1099:
1.52 www 1100: return 'F';
1.12 www 1101: }
1102:
1103: # ----------------------------------------------------------------- Define Role
1104:
1105: sub definerole {
1106: if (allowed('mcr','/')) {
1107: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.21 www 1108: map {
1109: my ($crole,$cqual)=split(/\&/,$_);
1110: if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
1111: if ($pr{'cr:s'}=~/$crole\&/) {
1112: if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
1113: return "refused:s:$crole&$cqual";
1114: }
1115: }
1116: } split('/',$sysrole);
1117: map {
1118: my ($crole,$cqual)=split(/\&/,$_);
1119: if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
1120: if ($pr{'cr:d'}=~/$crole\&/) {
1121: if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
1122: return "refused:d:$crole&$cqual";
1123: }
1124: }
1125: } split('/',$domrole);
1126: map {
1127: my ($crole,$cqual)=split(/\&/,$_);
1128: if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
1129: if ($pr{'cr:c'}=~/$crole\&/) {
1130: if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
1131: return "refused:c:$crole&$cqual";
1132: }
1133: }
1134: } split('/',$courole);
1.12 www 1135: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1136: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 1137: "rolesdef_$rolename=".
1138: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 1139: return reply($command,$ENV{'user.home'});
1140: } else {
1141: return 'refused';
1142: }
1143: }
1144:
1145: # ------------------------------------------------------------------ Plain Text
1146:
1147: sub plaintext {
1.22 www 1148: my $short=shift;
1149: return $prp{$short};
1.12 www 1150: }
1151:
1.25 www 1152: # ------------------------------------------------------------------ Plain Text
1153:
1154: sub fileembstyle {
1155: my $ending=shift;
1156: return $fe{$ending};
1157: }
1158:
1159: # ------------------------------------------------------------ Description Text
1160:
1.74 www 1161: sub filedescription {
1.25 www 1162: my $ending=shift;
1163: return $fd{$ending};
1164: }
1165:
1.12 www 1166: # ----------------------------------------------------------------- Assign Role
1167:
1168: sub assignrole {
1.21 www 1169: my ($udom,$uname,$url,$role,$end,$start)=@_;
1170: my $mrole;
1171: if ($role =~ /^cr\//) {
1.81 www 1172: unless (&allowed('ccr',$url)) { return 'refused'; }
1.21 www 1173: $mrole='cr';
1174: } else {
1.82 www 1175: my $cwosec=$url;
1.83 www 1176: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.82 www 1177: unless (&allowed('c'.$role,$cwosec)) { return 'refused'; }
1.21 www 1178: $mrole=$role;
1179: }
1180: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1181: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 1182: if ($end) { $command.='_'.$end; }
1.21 www 1183: if ($start) {
1184: if ($end) {
1.81 www 1185: $command.='_'.$start;
1.21 www 1186: } else {
1.81 www 1187: $command.='_0_'.$start;
1.21 www 1188: }
1189: }
1190: return &reply($command,&homeserver($uname,$udom));
1.80 www 1191: }
1192:
1.81 www 1193: # --------------------------------------------------------------- Modify a user
1.80 www 1194:
1195:
1.81 www 1196: sub modifyuser {
1.80 www 1197: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene)=@_;
1.81 www 1198: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1199: $umode.', '.$first.', '.$middle.', '.
1200: $last.', '.$gene.' by '.
1201: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1202: my $uhome=&homeserver($uname,$udom);
1203: # ----------------------------------------------------------------- Create User
1.81 www 1204: if (($uhome eq 'no_host') && ($umode) && ($upass)) {
1.80 www 1205: my $unhome='';
1206: if ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1207: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1208: } else {
1209: my $tryserver;
1.81 www 1210: my $loadm=10000000;
1.80 www 1211: foreach $tryserver (keys %libserv) {
1212: if ($hostdom{$tryserver} eq $udom) {
1213: my $answer=reply('load',$tryserver);
1214: if (($answer=~/\d+/) && ($answer<$loadm)) {
1215: $loadm=$answer;
1216: $unhome=$tryserver;
1217: }
1218: }
1219: }
1220: }
1221: if (($unhome eq '') || ($unhome eq 'no_host')) {
1222: return 'error: find home';
1223: }
1224: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
1225: &escape($upass),$unhome);
1226: unless ($reply eq 'ok') {
1227: return 'error: '.$reply;
1228: }
1229: $uhome=&homeserver($uname,$udom);
1230: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1231: return 'error: verify home';
1232: }
1233: }
1234: # ---------------------------------------------------------------------- Add ID
1235: if ($uid) {
1236: $uid=~tr/A-Z/a-z/;
1237: my %uidhash=&idrget($udom,$uname);
1238: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)) {
1239: unless ($uid eq $uidhash{$uname}) {
1240: return 'error: mismatch '.$uidhash{$uname}.' versus '.$uid;
1241: }
1242: } else {
1243: &idput($udom,($uname => $uid));
1244: }
1245: }
1246: # -------------------------------------------------------------- Add names, etc
1247: my $names=&reply('get:'.$udom.':'.$uname.
1248: ':environment:firstname&middlename&lastname&generation',
1249: $uhome);
1250: my ($efirst,$emiddle,$elast,$egene)=split(/\&/,$names);
1.81 www 1251: if ($first) { $efirst = &escape($first); }
1252: if ($middle) { $emiddle = &escape($middle); }
1253: if ($last) { $elast = &escape($last); }
1254: if ($gene) { $egene = &escape($gene); }
1.80 www 1255: my $reply=&reply('put:'.$udom.':'.$uname.
1256: ':environment:firstname='.$efirst.
1257: '&middlename='.$emiddle.
1258: '&lastname='.$elast.
1259: '&generation='.$egene,$uhome);
1260: if ($reply ne 'ok') {
1261: return 'error: '.$reply;
1262: }
1.81 www 1263: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1264: $umode.', '.$first.', '.$middle.', '.
1265: $last.', '.$gene.' by '.
1266: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1267: return 'ok';
1268: }
1269:
1.81 www 1270: # -------------------------------------------------------------- Modify student
1.80 www 1271:
1.81 www 1272: sub modifystudent {
1273: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1274: $end,$start)=@_;
1275: my $cid='';
1276: unless ($cid=$ENV{'request.course.id'}) {
1.80 www 1277: return 'not_in_class';
1278: }
1279: # --------------------------------------------------------------- Make the user
1.81 www 1280: my $reply=&modifyuser
1.80 www 1281: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene);
1282: unless ($reply eq 'ok') { return $reply; }
1.81 www 1283: my $uhome=&homeserver($uname,$udom);
1284: if (($uhome eq '') || ($uhome eq 'no_host')) {
1285: return 'error: no such user';
1286: }
1.80 www 1287: # -------------------------------------------------- Add student to course list
1.81 www 1288: my $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1289: $ENV{'course.'.$cid.'.num'}.':classlist:'.
1290: &escape($uname.':'.$udom).'='.
1291: &escape($end.':'.$start),
1292: $ENV{'course.'.$cid.'.home'});
1293: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
1294: return 'error: '.$reply;
1295: }
1.80 www 1296: # ---------------------------------------------------- Add student role to user
1.83 www 1297: my $uurl='/'.$cid;
1.81 www 1298: $uurl=~s/\_/\//g;
1299: if ($usec) {
1300: $uurl.='/'.$usec;
1301: }
1302: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 1303: }
1304:
1.84 www 1305: # ------------------------------------------------- Write to course preferences
1306:
1307: sub writecoursepref {
1308: my ($courseid,%prefs)=@_;
1309: $courseid=~s/^\///;
1310: $courseid=~s/\_/\//g;
1311: my ($cdomain,$cnum)=split(/\//,$courseid);
1312: my $chome=homeserver($cnum,$cdomain);
1313: if (($chome eq '') || ($chome eq 'no_host')) {
1314: return 'error: no such course';
1315: }
1316: my $cstring='';
1317: map {
1318: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1319: } keys %prefs;
1320: $cstring=~s/\&$//;
1321: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
1322: }
1323:
1324: # ---------------------------------------------------------- Make/modify course
1325:
1326: sub createcourse {
1327: my ($udom,$description,$url)=@_;
1328: $url=&declutter($url);
1329: my $cid='';
1330: unless (&allowed('ccc',$ENV{'user.domain'})) {
1331: return 'refused';
1332: }
1333: unless ($udom eq $ENV{'user.domain'}) {
1334: return 'refused';
1335: }
1336: # ------------------------------------------------------------------- Create ID
1337: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1338: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1339: # ----------------------------------------------- Make sure that does not exist
1340: my $uhome=&homeserver($uname,$udom);
1341: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1342: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1343: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1344: $uhome=&homeserver($uname,$udom);
1345: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1346: return 'error: unable to generate unique course-ID';
1347: }
1348: }
1349: # ------------------------------------------------------------- Make the course
1350: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1351: $ENV{'user.home'});
1352: unless ($reply eq 'ok') { return 'error: '.$reply; }
1353: my $uhome=&homeserver($uname,$udom);
1354: if (($uhome eq '') || ($uhome eq 'no_host')) {
1355: return 'error: no such course';
1356: }
1357: &writecoursepref($udom.'_'.$uname,
1358: ('description' => $description,
1359: 'url' => $url));
1360: return '/'.$udom.'/'.$uname;
1361: }
1362:
1.21 www 1363: # ---------------------------------------------------------- Assign Custom Role
1364:
1365: sub assigncustomrole {
1366: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
1367: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1368: $end,$start);
1369: }
1370:
1371: # ----------------------------------------------------------------- Revoke Role
1372:
1373: sub revokerole {
1374: my ($udom,$uname,$url,$role)=@_;
1375: my $now=time;
1376: return &assignrole($udom,$uname,$url,$role,$now);
1377: }
1378:
1379: # ---------------------------------------------------------- Revoke Custom Role
1380:
1381: sub revokecustomrole {
1382: my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
1383: my $now=time;
1384: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
1.17 www 1385: }
1386:
1387: # ------------------------------------------------------------ Directory lister
1388:
1389: sub dirlist {
1390: my $uri=shift;
1.18 www 1391: $uri=~s/^\///;
1392: $uri=~s/\/$//;
1.19 www 1393: my ($res,$udom,$uname,@rest)=split(/\//,$uri);
1394: if ($udom) {
1395: if ($uname) {
1396: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
1397: homeserver($uname,$udom));
1398: return split(/:/,$listing);
1399: } else {
1400: my $tryserver;
1401: my %allusers=();
1402: foreach $tryserver (keys %libserv) {
1403: if ($hostdom{$tryserver} eq $udom) {
1404: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
1405: $tryserver);
1406: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
1407: && ($listing ne 'con_lost')) {
1408: map {
1409: my ($entry,@stat)=split(/&/,$_);
1410: $allusers{$entry}=1;
1411: } split(/:/,$listing);
1412: }
1413: }
1414: }
1415: my $alluserstr='';
1416: map {
1417: $alluserstr.=$_.'&user:';
1418: } sort keys %allusers;
1419: $alluserstr=~s/:$//;
1420: return split(/:/,$alluserstr);
1421: }
1422: } else {
1423: my $tryserver;
1424: my %alldom=();
1425: foreach $tryserver (keys %libserv) {
1426: $alldom{$hostdom{$tryserver}}=1;
1427: }
1428: my $alldomstr='';
1429: map {
1430: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
1431: } sort keys %alldom;
1432: $alldomstr=~s/:$//;
1433: return split(/:/,$alldomstr);
1434: }
1.26 www 1435: }
1436:
1437: # -------------------------------------------------------- Value of a Condition
1438:
1.40 www 1439: sub directcondval {
1440: my $number=shift;
1441: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
1442: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
1443: } else {
1444: return 2;
1445: }
1446: }
1447:
1.26 www 1448: sub condval {
1449: my $condidx=shift;
1450: my $result=0;
1.54 www 1451: my $allpathcond='';
1452: map {
1453: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
1454: $allpathcond.=
1455: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
1456: }
1457: } split(/\|/,$condidx);
1458: $allpathcond=~s/\|$//;
1.33 www 1459: if ($ENV{'request.course.id'}) {
1.54 www 1460: if ($allpathcond) {
1.26 www 1461: my $operand='|';
1462: my @stack;
1463: map {
1464: if ($_ eq '(') {
1465: push @stack,($operand,$result)
1466: } elsif ($_ eq ')') {
1467: my $before=pop @stack;
1468: if (pop @stack eq '&') {
1469: $result=$result>$before?$before:$result;
1470: } else {
1471: $result=$result>$before?$result:$before;
1472: }
1473: } elsif (($_ eq '&') || ($_ eq '|')) {
1474: $operand=$_;
1475: } else {
1.40 www 1476: my $new=directcondval($_);
1.26 www 1477: if ($operand eq '&') {
1478: $result=$result>$new?$new:$result;
1479: } else {
1480: $result=$result>$new?$result:$new;
1481: }
1482: }
1.54 www 1483: } ($allpathcond=~/(\d+|\(|\)|\&|\|)/g);
1.26 www 1484: }
1485: }
1486: return $result;
1.28 www 1487: }
1488:
1489: # --------------------------------------------------------- Value of a Variable
1490:
1.58 www 1491: sub EXT {
1.48 www 1492: my $varname=shift;
1.68 www 1493: unless ($varname) { return ''; }
1.48 www 1494: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
1495: my $rest;
1496: if ($therest[0]) {
1497: $rest=join('.',@therest);
1498: } else {
1499: $rest='';
1500: }
1.57 www 1501: my $qualifierrest=$qualifier;
1502: if ($rest) { $qualifierrest.='.'.$rest; }
1503: my $spacequalifierrest=$space;
1504: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 1505: if ($realm eq 'user') {
1.48 www 1506: # --------------------------------------------------------------- user.resource
1507: if ($space eq 'resource') {
1.57 www 1508: my %restored=&restore;
1509: return $restored{$qualifierrest};
1.48 www 1510: # ----------------------------------------------------------------- user.access
1511: } elsif ($space eq 'access') {
1512: return &allowed($qualifier,$rest);
1513: # ------------------------------------------ user.preferences, user.environment
1514: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.57 www 1515: return $ENV{join('.',('environment',$qualifierrest))};
1.48 www 1516: # ----------------------------------------------------------------- user.course
1517: } elsif ($space eq 'course') {
1518: return $ENV{join('.',('request.course',$qualifier))};
1519: # ------------------------------------------------------------------- user.role
1520: } elsif ($space eq 'role') {
1521: my ($role,$where)=split(/\./,$ENV{'request.role'});
1522: if ($qualifier eq 'value') {
1523: return $role;
1524: } elsif ($qualifier eq 'extent') {
1525: return $where;
1526: }
1527: # ----------------------------------------------------------------- user.domain
1528: } elsif ($space eq 'domain') {
1529: return $ENV{'user.domain'};
1530: # ------------------------------------------------------------------- user.name
1531: } elsif ($space eq 'name') {
1532: return $ENV{'user.name'};
1533: # ---------------------------------------------------- Any other user namespace
1.29 www 1534: } else {
1.48 www 1535: my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
1536: my %reply=&get($space,$item);
1537: return $reply{$item};
1538: }
1539: } elsif ($realm eq 'request') {
1540: # ------------------------------------------------------------- request.browser
1541: if ($space eq 'browser') {
1542: return $ENV{'browser.'.$qualifier};
1.57 www 1543: # ------------------------------------------------------------ request.filename
1544: } else {
1545: return $ENV{'request.'.$spacequalifierrest};
1.29 www 1546: }
1.28 www 1547: } elsif ($realm eq 'course') {
1.48 www 1548: # ---------------------------------------------------------- course.description
1.57 www 1549: my $section='';
1550: if ($ENV{'request.course.sec'}) {
1551: $section='_'.$ENV{'request.course.sec'};
1.48 www 1552: }
1.57 www 1553: return $ENV{'course.'.$ENV{'request.course.id'}.$section.'.'.
1554: $spacequalifierrest};
1555: } elsif ($realm eq 'resource') {
1.60 www 1556: if ($ENV{'request.course.id'}) {
1557: # ----------------------------------------------------- Cascading lookup scheme
1.69 www 1558: my $symbp=&symbread();
1559: my $mapp=(split(/\_\_\_/,$symbp))[0];
1560:
1561: my $symbparm=$symbp.'.'.$spacequalifierrest;
1562: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
1563:
1.60 www 1564: my $seclevel=
1.69 www 1565: $ENV{'request.course.id'}.'.['.
1566: $ENV{'request.course.sec'}.'].'.$spacequalifierrest;
1567: my $seclevelr=
1568: $ENV{'request.course.id'}.'.['.
1569: $ENV{'request.course.sec'}.'].'.$symbparm;
1570: my $seclevelm=
1571: $ENV{'request.course.id'}.'.['.
1572: $ENV{'request.course.sec'}.'].'.$mapparm;
1573:
1.60 www 1574: my $courselevel=
1575: $ENV{'request.course.id'}.'.'.$spacequalifierrest;
1.69 www 1576: my $courselevelr=
1577: $ENV{'request.course.id'}.'.'.$symbparm;
1578: my $courselevelm=
1579: $ENV{'request.course.id'}.'.'.$mapparm;
1580:
1.60 www 1581:
1582: # ----------------------------------------------------------- first, check user
1.69 www 1583: my %resourcedata=get('resourcedata',
1584: ($courselevelr,$courselevelm,$courselevel));
1585: if ($resourcedata{$courselevelr}!~/^error\:/) {
1586:
1587: if ($resourcedata{$courselevelr}) {
1588: return $resourcedata{$courselevelr}; }
1589: if ($resourcedata{$courselevelm}) {
1590: return $resourcedata{$courselevelm}; }
1.60 www 1591: if ($resourcedata{$courselevel}) { return $resourcedata{$courselevel}; }
1.69 www 1592:
1.63 www 1593: }
1.60 www 1594: # -------------------------------------------------------- second, check course
1595: my $section='';
1596: if ($ENV{'request.course.sec'}) {
1597: $section='_'.$ENV{'request.course.sec'};
1598: }
1599: my $reply=&reply('get:'.
1600: $ENV{'course.'.$ENV{'request.course.id'}.$section.'.domain'}.':'.
1601: $ENV{'course.'.$ENV{'request.course.id'}.$section.'.num'}.
1.79 www 1602: ':resourcedata:'.
1603: &escape($seclevelr).'&'.&escape($seclevelm).'&'.&escape($seclevel).'&'.
1604: &escape($courselevelr).'&'.&escape($courselevelm).'&'.&escape($courselevel),
1.60 www 1605: $ENV{'course.'.$ENV{'request.course.id'}.$section.'.home'});
1.63 www 1606: if ($reply!~/^error\:/) {
1.79 www 1607: map {
1608: if ($_) { return &unescape($_); }
1609: } split(/\&/,$reply);
1.63 www 1610: }
1.60 www 1611:
1612: # ------------------------------------------------------ third, check map parms
1.65 www 1613: my %parmhash=();
1614: my $thisparm='';
1615: if (tie(%parmhash,'GDBM_File',
1616: $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER,0640)) {
1617: $thisparm=$parmhash{$symbparm};
1618: untie(%parmhash);
1.60 www 1619: }
1.65 www 1620: if ($thisparm) { return $thisparm; }
1.60 www 1621: }
1622:
1623: # --------------------------------------------- last, look in resource metadata
1.71 www 1624:
1.78 www 1625: $spacequalifierrest=~s/\./\_/;
1.71 www 1626: my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest);
1627: if ($metadata) { return $metadata; }
1.78 www 1628: $metadata=&metadata($ENV{'request.filename'},
1629: 'parameter_'.$spacequalifierrest);
1630: if ($metadata) { return $metadata; }
1.71 www 1631:
1.48 www 1632: # ---------------------------------------------------- Any other user namespace
1633: } elsif ($realm eq 'environment') {
1634: # ----------------------------------------------------------------- environment
1.57 www 1635: return $ENV{$spacequalifierrest};
1.28 www 1636: } elsif ($realm eq 'system') {
1.48 www 1637: # ----------------------------------------------------------------- system.time
1638: if ($space eq 'time') {
1639: return time;
1640: }
1.28 www 1641: }
1.48 www 1642: return '';
1.61 www 1643: }
1644:
1.71 www 1645: # ---------------------------------------------------------------- Get metadata
1646:
1647: sub metadata {
1648: my ($uri,$what)=@_;
1.78 www 1649:
1.71 www 1650: $uri=&declutter($uri);
1.73 www 1651: my $filename=$uri;
1652: $uri=~s/\.meta$//;
1.71 www 1653: unless ($metacache{$uri.':keys'}) {
1.73 www 1654: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
1655: my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
1.71 www 1656: my $parser=HTML::TokeParser->new(\$metastring);
1657: my $token;
1658: while ($token=$parser->get_token) {
1659: if ($token->[0] eq 'S') {
1660: my $entry=$token->[1];
1661: my $unikey=$entry;
1.72 www 1662: if (defined($token->[2]->{'part'})) {
1.71 www 1663: $unikey.='_'.$token->[2]->{'part'};
1664: }
1.72 www 1665: if (defined($token->[2]->{'name'})) {
1.71 www 1666: $unikey.='_'.$token->[2]->{'name'};
1667: }
1668: if ($metacache{$uri.':keys'}) {
1669: $metacache{$uri.':keys'}.=','.$unikey;
1670: } else {
1671: $metacache{$uri.':keys'}=$unikey;
1672: }
1673: map {
1674: $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.72 www 1675: } @{$token->[3]};
1.78 www 1676: unless (
1677: $metacache{$uri.':'.$unikey}=$parser->get_text('/'.$entry)
1678: ) { $metacache{$uri.':'.$unikey}=
1679: $metacache{$uri.':'.$unikey.'.default'};
1680: }
1.71 www 1681: }
1682: }
1683: }
1684: return $metacache{$uri.':'.$what};
1685: }
1686:
1.31 www 1687: # ------------------------------------------------- Update symbolic store links
1688:
1689: sub symblist {
1690: my ($mapname,%newhash)=@_;
1691: $mapname=declutter($mapname);
1692: my %hash;
1693: if (($ENV{'request.course.fn'}) && (%newhash)) {
1694: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1695: &GDBM_WRCREAT,0640)) {
1696: map {
1697: $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
1698: } keys %newhash;
1699: if (untie(%hash)) {
1700: return 'ok';
1701: }
1702: }
1703: }
1704: return 'error';
1705: }
1706:
1707: # ------------------------------------------------------ Return symb list entry
1708:
1709: sub symbread {
1.44 www 1710: my $thisfn=shift;
1711: unless ($thisfn) {
1712: $thisfn=$ENV{'request.filename'};
1713: }
1714: $thisfn=declutter($thisfn);
1.31 www 1715: my %hash;
1.37 www 1716: my %bighash;
1717: my $syval='';
1.45 www 1718: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.31 www 1719: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1720: &GDBM_READER,0640)) {
1721: $syval=$hash{$thisfn};
1.37 www 1722: untie(%hash);
1723: }
1724: # ---------------------------------------------------------- There was an entry
1725: if ($syval) {
1726: unless ($syval=~/\_\d+$/) {
1727: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.44 www 1728: &appenv('request.ambiguous' => $thisfn);
1.37 www 1729: return '';
1730: }
1731: $syval.=$1;
1732: }
1733: } else {
1734: # ------------------------------------------------------- Was not in symb table
1735: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1736: &GDBM_READER,0640)) {
1737: # ---------------------------------------------- Get ID(s) for current resource
1738: my $ids=$bighash{'ids_/res/'.$thisfn};
1.65 www 1739: unless ($ids) {
1740: $ids=$bighash{'ids_/'.$thisfn};
1741: }
1.37 www 1742: if ($ids) {
1743: # ------------------------------------------------------------------- Has ID(s)
1744: my @possibilities=split(/\,/,$ids);
1.39 www 1745: if ($#possibilities==0) {
1746: # ----------------------------------------------- There is only one possibility
1.37 www 1747: my ($mapid,$resid)=split(/\./,$ids);
1748: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
1749: } else {
1.39 www 1750: # ------------------------------------------ There is more than one possibility
1751: my $realpossible=0;
1752: map {
1753: my $file=$bighash{'src_'.$_};
1754: if (&allowed('bre',$file)) {
1755: my ($mapid,$resid)=split(/\./,$_);
1756: if ($bighash{'map_type_'.$mapid} ne 'page') {
1757: $realpossible++;
1758: $syval=declutter($bighash{'map_id_'.$mapid}).
1759: '___'.$resid;
1760: }
1761: }
1762: } @possibilities;
1763: if ($realpossible!=1) { $syval=''; }
1.37 www 1764: }
1765: }
1766: untie(%bighash)
1767: }
1.31 www 1768: }
1.62 www 1769: if ($syval) {
1770: return $syval.'___'.$thisfn;
1771: }
1.31 www 1772: }
1.44 www 1773: &appenv('request.ambiguous' => $thisfn);
1.31 www 1774: return '';
1775: }
1776:
1777: # ---------------------------------------------------------- Return random seed
1778:
1.32 www 1779: sub numval {
1780: my $txt=shift;
1781: $txt=~tr/A-J/0-9/;
1782: $txt=~tr/a-j/0-9/;
1783: $txt=~tr/K-T/0-9/;
1784: $txt=~tr/k-t/0-9/;
1785: $txt=~tr/U-Z/0-5/;
1786: $txt=~tr/u-z/0-5/;
1787: $txt=~s/\D//g;
1788: return int($txt);
1789: }
1790:
1.31 www 1791: sub rndseed {
1792: my $symb;
1.44 www 1793: unless ($symb=&symbread()) { return time; }
1.32 www 1794: my $symbchck=unpack("%32C*",$symb);
1795: my $symbseed=numval($symb)%$symbchck;
1796: my $namechck=unpack("%32C*",$ENV{'user.name'});
1797: my $nameseed=numval($ENV{'user.name'})%$namechck;
1798: return int( $symbseed
1799: .$nameseed
1800: .unpack("%32C*",$ENV{'user.domain'})
1.33 www 1801: .unpack("%32C*",$ENV{'request.course.id'})
1.32 www 1802: .$namechck
1803: .$symbchck);
1.36 albertel 1804: }
1805:
1.76 www 1806: sub ireceipt {
1807: my ($funame,$fudom,$fucourseid,$fusymb)=@_;
1808: my $cuname=unpack("%32C*",$funame);
1809: my $cudom=unpack("%32C*",$fudom);
1810: my $cucourseid=unpack("%32C*",$fucourseid);
1811: my $cusymb=unpack("%32C*",$fusymb);
1.77 www 1812: my $cunique=unpack("%32C*",$perlvar{'lonReceipt'});
1.76 www 1813: return unpack("%32C*",$perlvar{'lonHostID'}).'-'.
1814: ($cunique%$cuname+
1815: $cunique%$cudom+
1816: $cusymb%$cuname+
1817: $cusymb%$cudom+
1818: $cucourseid%$cuname+
1819: $cucourseid%$cudom);
1820: }
1821:
1822: sub receipt {
1823: return &ireceipt($ENV{'user.name'},$ENV{'user.domain'},
1824: $ENV{'request.course.id'},&symbread());
1825: }
1826:
1.36 albertel 1827: # ------------------------------------------------------------ Serves up a file
1828: # returns either the contents of the file or a -1
1829: sub getfile {
1830: my $file=shift;
1.37 www 1831: &repcopy($file);
1.36 albertel 1832: if (! -e $file ) { return -1; };
1833: my $fh=Apache::File->new($file);
1834: my $a='';
1835: while (<$fh>) { $a .=$_; }
1836: return $a
1837: }
1838:
1839: sub filelocation {
1840: my ($dir,$file) = @_;
1841: my $location;
1842: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1.59 albertel 1843: if ($file=~m:^/~:) { # is a contruction space reference
1844: $location = $file;
1845: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.36 albertel 1846: } else {
1.59 albertel 1847: $file=~s/^$perlvar{'lonDocRoot'}//;
1848: $file=~s:^/*res::;
1849: if ( !( $file =~ m:^/:) ) {
1850: $location = $dir. '/'.$file;
1851: } else {
1852: $location = '/home/httpd/html/res'.$file;
1853: }
1.36 albertel 1854: }
1855: $location=~s://+:/:g; # remove duplicate /
1.46 www 1856: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
1857: return $location;
1858: }
1.36 albertel 1859:
1.46 www 1860: sub hreflocation {
1861: my ($dir,$file)=@_;
1862: unless (($_=~/^http:\/\//i) || ($_=~/^\//)) {
1863: my $finalpath=filelocation($dir,$file);
1864: $finalpath=~s/^\/home\/httpd\/html//;
1865: return $finalpath;
1866: } else {
1867: return $file;
1868: }
1.31 www 1869: }
1870:
1871: # ------------------------------------------------------------- Declutters URLs
1872:
1873: sub declutter {
1874: my $thisfn=shift;
1875: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
1876: $thisfn=~s/^\///;
1877: $thisfn=~s/^res\///;
1878: return $thisfn;
1.12 www 1879: }
1880:
1881: # -------------------------------------------------------- Escape Special Chars
1882:
1883: sub escape {
1884: my $str=shift;
1885: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
1886: return $str;
1887: }
1888:
1889: # ----------------------------------------------------- Un-Escape Special Chars
1890:
1891: sub unescape {
1892: my $str=shift;
1893: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1894: return $str;
1895: }
1.11 www 1896:
1.1 albertel 1897: # ================================================================ Main Program
1898:
1899: sub BEGIN {
1900: if ($readit ne 'done') {
1901: # ------------------------------------------------------------ Read access.conf
1902: {
1903: my $config=Apache::File->new("/etc/httpd/conf/access.conf");
1904:
1905: while (my $configline=<$config>) {
1906: if ($configline =~ /PerlSetVar/) {
1907: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 1908: chomp($varvalue);
1.1 albertel 1909: $perlvar{$varname}=$varvalue;
1910: }
1911: }
1912: }
1913:
1914: # ------------------------------------------------------------- Read hosts file
1915: {
1916: my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
1917:
1918: while (my $configline=<$config>) {
1919: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
1920: $hostname{$id}=$name;
1921: $hostdom{$id}=$domain;
1922: if ($role eq 'library') { $libserv{$id}=$name; }
1923: }
1924: }
1925:
1926: # ------------------------------------------------------ Read spare server file
1927: {
1928: my $config=Apache::File->new("$perlvar{'lonTabDir'}/spare.tab");
1929:
1930: while (my $configline=<$config>) {
1931: chomp($configline);
1932: if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
1933: $spareid{$configline}=1;
1934: }
1935: }
1936: }
1.11 www 1937: # ------------------------------------------------------------ Read permissions
1938: {
1939: my $config=Apache::File->new("$perlvar{'lonTabDir'}/roles.tab");
1940:
1941: while (my $configline=<$config>) {
1942: chomp($configline);
1943: my ($role,$perm)=split(/ /,$configline);
1944: if ($perm ne '') { $pr{$role}=$perm; }
1945: }
1946: }
1947:
1948: # -------------------------------------------- Read plain texts for permissions
1949: {
1950: my $config=Apache::File->new("$perlvar{'lonTabDir'}/rolesplain.tab");
1951:
1952: while (my $configline=<$config>) {
1953: chomp($configline);
1954: my ($short,$plain)=split(/:/,$configline);
1955: if ($plain ne '') { $prp{$short}=$plain; }
1.25 www 1956: }
1957: }
1958:
1959: # ------------------------------------------------------------- Read file types
1960: {
1961: my $config=Apache::File->new("$perlvar{'lonTabDir'}/filetypes.tab");
1962:
1963: while (my $configline=<$config>) {
1964: chomp($configline);
1965: my ($ending,$emb,@descr)=split(/\s+/,$configline);
1966: if ($descr[0] ne '') {
1967: $fe{$ending}=$emb;
1968: $fd{$ending}=join(' ',@descr);
1969: }
1.11 www 1970: }
1971: }
1972:
1.71 www 1973: %metacache=();
1.22 www 1974:
1.1 albertel 1975: $readit='done';
1.12 www 1976: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.1 albertel 1977: }
1978: }
1979: 1;
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