Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.148
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
4: # Functions for use by content handlers:
5: #
1.112 harris41 6: # metadata_query(sql-query-string,custom-metadata-regex) :
7: # returns file handle of where sql and
8: # regex results will be stored for query
1.12 www 9: # plaintext(short) : plain text explanation of short term
1.25 www 10: # fileembstyle(ext) : embed style in page for file extension
11: # filedescription(ext) : descriptor text for file extension
1.29 www 12: # allowed(short,url) : returns codes for allowed actions
13: # F: full access
14: # U,I,K: authentication modes (cxx only)
15: # '': forbidden
16: # 1: user needs to choose course
17: # 2: browse allowed
1.21 www 18: # definerole(rolename,sys,dom,cou) : define a custom role rolename
1.103 harris41 19: # set privileges in format of lonTabs/roles.tab for
1.21 www 20: # system, domain and course level,
21: # assignrole(udom,uname,url,role,end,start) : give a role to a user for the
22: # level given by url. Optional start and end dates
23: # (leave empty string or zero for "no date")
24: # assigncustomrole (udom,uname,url,rdom,rnam,rolename,end,start) : give a
25: # custom role to a user for the level given by url.
26: # Specify name and domain of role author, and role name
27: # revokerole (udom,uname,url,role) : Revoke a role for url
28: # revokecustomrole (udom,uname,url,rdom,rnam,rolename) : Revoke a custom role
1.24 www 29: # appenv(hash) : adds hash to session environment
1.56 www 30: # delenv(varname) : deletes all environment entries starting with varname
1.124 www 31: # store(hashref,symb,courseid,udom,uname)
1.122 albertel 32: # : stores hash permanently for this url
33: # hashref needs to be given, and should be a \%hashname
34: # the remaining args aren't required and if they aren't
35: # passed or are '' they will be derived from the ENV
1.124 www 36: # cstore(hashref,symb,courseid,udom,uname)
1.122 albertel 37: # : same as store but uses the critical interface to
38: # guarentee a store
1.124 www 39: # restore(symb,courseid,udom,uname)
1.122 albertel 40: # : returns hash for this symb, all args are optional
1.124 www 41: # if they aren't given they will be derived from the
42: # current enviroment
1.133 albertel 43: #
44: #
1.134 albertel 45: # for the next 6 functions udom and uname are optional
1.133 albertel 46: # if supplied they use udom as the domain and uname
47: # as the username for the function (supply a courseid
48: # for the uname if you want a course database)
49: # if not supplied it uses %ENV and looks at
50: # user. attribute for the values
51: #
52: # eget(namesp,arrayref,udom,uname)
53: # : returns hash with keys from array reference filled
54: # in from namesp (encrypts the return communication)
1.131 albertel 55: # get(namesp,arrayref,udom,uname)
56: # : returns hash with keys from array reference filled
57: # in from namesp
1.133 albertel 58: # dump(namesp,udom,uname) : dumps the complete namespace into a hash
59: # del(namesp,array,udom,uname) : deletes keys out of array from namesp
1.134 albertel 60: # put(namesp,hash,udom,uname) : stores hash in namesp
61: # cput(namesp,hash,udom,uname) : critical put
1.133 albertel 62: #
63: #
1.23 www 64: # ssi(url,hash) : does a complete request cycle on url to localhost, posts
65: # hash
1.34 www 66: # coursedescription(id) : returns and caches course description for id
1.17 www 67: # repcopy(filename) : replicate file
68: # dirlist(url) : gets a directory listing
1.40 www 69: # directcondval(index) : reading condition value of single condition from
70: # state string
1.28 www 71: # condval(index) : value of condition index based on state
1.58 www 72: # EXT(name) : value of a variable
1.31 www 73: # symblist(map,hash) : Updates symbolic storage links
1.44 www 74: # symbread([filename]) : returns the data handle (filename optional)
1.76 www 75: # rndseed() : returns a random seed
76: # receipt() : returns a receipt to be given out to users
1.36 albertel 77: # getfile(filename) : returns the contents of filename, or a -1 if it can't
78: # be found, replicates and subscribes to the file
1.121 harris41 79: # filelocation(dir,file) : returns a fairly clean absolute reference to file
1.36 albertel 80: # from the directory dir
1.46 www 81: # hreflocation(dir,file) : same as filelocation, but for hrefs
1.47 www 82: # log(domain,user,home,msg) : write to permanent log for user
1.70 www 83: # usection(domain,user,courseid) : output of section name/number or '' for
84: # "not in course" and '-1' for "no section"
85: # userenvironment(domain,user,what) : puts out any environment parameter
86: # for a user
87: # idput(domain,hash) : writes IDs for users from hash (name=>id,name=>id)
88: # idget(domain,array): returns hash with usernames (id=>name,id=>name) for
89: # an array of IDs
90: # idrget(domain,array): returns hash with IDs for usernames (name=>id,...) for
91: # an array of names
1.73 www 92: # metadata(file,entry): returns the metadata entry for a file. entry='keys'
93: # returns a comma separated list of keys
1.12 www 94: #
1.1 albertel 95: # 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
1.5 www 96: # 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
1.8 www 97: # 11/8,11/16,11/18,11/22,11/23,12/22,
1.12 www 98: # 01/06,01/13,02/24,02/28,02/29,
99: # 03/01,03/02,03/06,03/07,03/13,
1.15 www 100: # 04/05,05/29,05/31,06/01,
101: # 06/05,06/26 Gerd Kortemeyer
102: # 06/26 Ben Tyszka
1.22 www 103: # 06/30,07/15,07/17,07/18,07/20,07/21,07/22,07/25 Gerd Kortemeyer
1.23 www 104: # 08/14 Ben Tyszka
1.36 albertel 105: # 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 106: # 10/04 Gerd Kortemeyer
1.36 albertel 107: # 10/04 Guy Albertelli
1.54 www 108: # 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 109: # 10/30,10/31,
1.75 www 110: # 11/2,11/14,11/15,11/16,11/20,11/21,11/22,11/25,11/27,
1.83 www 111: # 12/02,12/12,12/13,12/14,12/28,12/29 Gerd Kortemeyer
1.87 www 112: # 05/01/01 Guy Albertelli
1.89 www 113: # 05/01,06/01,09/01 Gerd Kortemeyer
1.92 www 114: # 09/01 Guy Albertelli
1.102 www 115: # 09/01,10/01,11/01 Gerd Kortemeyer
1.103 harris41 116: # 02/27/01 Scott Harrison
1.104 www 117: # 3/2 Gerd Kortemeyer
1.119 harris41 118: # 3/15,3/19 Scott Harrison
1.110 www 119: # 3/19,3/20 Gerd Kortemeyer
1.123 harris41 120: # 3/22,3/27,4/2,4/16,4/17 Scott Harrison
1.125 www 121: # 5/26,5/28 Gerd Kortemeyer
1.127 ng 122: # 5/30 H. K. Ng
1.128 www 123: # 6/1 Gerd Kortemeyer
1.135 www 124: # July Guy Albertelli
1.148 ! www 125: # 8/4,8/7,8/8,8/9,8/11 Gerd Kortemeyer
1.128 www 126:
1.1 albertel 127: package Apache::lonnet;
128:
129: use strict;
130: use Apache::File;
1.8 www 131: use LWP::UserAgent();
1.15 www 132: use HTTP::Headers;
1.11 www 133: use vars
1.135 www 134: qw(%perlvar %hostname %homecache %spareid %hostdom %libserv %pr %prp %fe %fd $readit %metacache %packagetab);
1.1 albertel 135: use IO::Socket;
1.31 www 136: use GDBM_File;
1.8 www 137: use Apache::Constants qw(:common :http);
1.71 www 138: use HTML::TokeParser;
1.88 www 139: use Fcntl qw(:flock);
1.1 albertel 140:
141: # --------------------------------------------------------------------- Logging
142:
143: sub logthis {
144: my $message=shift;
145: my $execdir=$perlvar{'lonDaemons'};
146: my $now=time;
147: my $local=localtime($now);
148: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
149: print $fh "$local ($$): $message\n";
150: return 1;
151: }
152:
153: sub logperm {
154: my $message=shift;
155: my $execdir=$perlvar{'lonDaemons'};
156: my $now=time;
157: my $local=localtime($now);
158: my $fh=Apache::File->new(">>$execdir/logs/lonnet.perm.log");
159: print $fh "$now:$message:$local\n";
160: return 1;
161: }
162:
163: # -------------------------------------------------- Non-critical communication
164: sub subreply {
165: my ($cmd,$server)=@_;
166: my $peerfile="$perlvar{'lonSockDir'}/$server";
167: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
168: Type => SOCK_STREAM,
169: Timeout => 10)
170: or return "con_lost";
171: print $client "$cmd\n";
172: my $answer=<$client>;
1.9 www 173: if (!$answer) { $answer="con_lost"; }
1.1 albertel 174: chomp($answer);
175: return $answer;
176: }
177:
178: sub reply {
179: my ($cmd,$server)=@_;
180: my $answer=subreply($cmd,$server);
181: if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
1.65 www 182: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.12 www 183: &logthis("<font color=blue>WARNING:".
184: " $cmd to $server returned $answer</font>");
185: }
1.1 albertel 186: return $answer;
187: }
188:
189: # ----------------------------------------------------------- Send USR1 to lonc
190:
191: sub reconlonc {
192: my $peerfile=shift;
193: &logthis("Trying to reconnect for $peerfile");
194: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
195: if (my $fh=Apache::File->new("$loncfile")) {
196: my $loncpid=<$fh>;
197: chomp($loncpid);
198: if (kill 0 => $loncpid) {
199: &logthis("lonc at pid $loncpid responding, sending USR1");
200: kill USR1 => $loncpid;
201: sleep 1;
202: if (-e "$peerfile") { return; }
203: &logthis("$peerfile still not there, give it another try");
204: sleep 5;
205: if (-e "$peerfile") { return; }
1.12 www 206: &logthis(
207: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 208: } else {
1.12 www 209: &logthis(
210: "<font color=blue>WARNING:".
211: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 212: }
213: } else {
1.12 www 214: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 215: }
216: }
217:
218: # ------------------------------------------------------ Critical communication
1.12 www 219:
1.1 albertel 220: sub critical {
221: my ($cmd,$server)=@_;
1.89 www 222: unless ($hostname{$server}) {
223: &logthis("<font color=blue>WARNING:".
224: " Critical message to unknown server ($server)</font>");
225: return 'no_such_host';
226: }
1.1 albertel 227: my $answer=reply($cmd,$server);
228: if ($answer eq 'con_lost') {
229: my $pingreply=reply('ping',$server);
230: &reconlonc("$perlvar{'lonSockDir'}/$server");
231: my $pongreply=reply('pong',$server);
232: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
233: $answer=reply($cmd,$server);
234: if ($answer eq 'con_lost') {
235: my $now=time;
236: my $middlename=$cmd;
1.5 www 237: $middlename=substr($middlename,0,16);
1.1 albertel 238: $middlename=~s/\W//g;
239: my $dfilename=
240: "$perlvar{'lonSockDir'}/delayed/$now.$middlename.$server";
241: {
242: my $dfh;
243: if ($dfh=Apache::File->new(">$dfilename")) {
1.7 www 244: print $dfh "$cmd\n";
1.1 albertel 245: }
246: }
247: sleep 2;
248: my $wcmd='';
249: {
250: my $dfh;
251: if ($dfh=Apache::File->new("$dfilename")) {
252: $wcmd=<$dfh>;
253: }
254: }
255: chomp($wcmd);
1.7 www 256: if ($wcmd eq $cmd) {
1.12 www 257: &logthis("<font color=blue>WARNING: ".
258: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 259: &logperm("D:$server:$cmd");
260: return 'con_delayed';
261: } else {
1.12 www 262: &logthis("<font color=red>CRITICAL:"
263: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 264: &logperm("F:$server:$cmd");
265: return 'con_failed';
266: }
267: }
268: }
269: return $answer;
270: }
271:
1.5 www 272: # ---------------------------------------------------------- Append Environment
273:
274: sub appenv {
1.6 www 275: my %newenv=@_;
1.35 www 276: map {
277: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
278: &logthis("<font color=blue>WARNING: ".
279: "Attempt to modify environment ".$_." to ".$newenv{$_});
280: delete($newenv{$_});
281: } else {
282: $ENV{$_}=$newenv{$_};
283: }
284: } keys %newenv;
1.95 www 285:
286: my $lockfh;
287: unless ($lockfh=Apache::File->new("$ENV{'user.environment'}")) {
1.97 www 288: return 'error: '.$!;
1.95 www 289: }
290: unless (flock($lockfh,LOCK_EX)) {
291: &logthis("<font color=blue>WARNING: ".
292: 'Could not obtain exclusive lock in appenv: '.$!);
293: $lockfh->close();
294: return 'error: '.$!;
295: }
296:
1.6 www 297: my @oldenv;
298: {
299: my $fh;
300: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
1.97 www 301: return 'error: '.$!;
1.6 www 302: }
303: @oldenv=<$fh>;
1.89 www 304: $fh->close();
1.6 www 305: }
306: for (my $i=0; $i<=$#oldenv; $i++) {
307: chomp($oldenv[$i]);
1.9 www 308: if ($oldenv[$i] ne '') {
309: my ($name,$value)=split(/=/,$oldenv[$i]);
1.24 www 310: unless (defined($newenv{$name})) {
311: $newenv{$name}=$value;
312: }
1.9 www 313: }
1.6 www 314: }
315: {
316: my $fh;
317: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
318: return 'error';
319: }
320: my $newname;
1.93 www 321: foreach $newname (keys %newenv) {
1.6 www 322: print $fh "$newname=$newenv{$newname}\n";
323: }
1.86 albertel 324: $fh->close();
1.56 www 325: }
1.95 www 326:
327: $lockfh->close();
1.56 www 328: return 'ok';
329: }
330: # ----------------------------------------------------- Delete from Environment
331:
332: sub delenv {
333: my $delthis=shift;
334: my %newenv=();
335: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
336: &logthis("<font color=blue>WARNING: ".
337: "Attempt to delete from environment ".$delthis);
338: return 'error';
339: }
340: my @oldenv;
341: {
342: my $fh;
343: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
344: return 'error';
345: }
1.89 www 346: unless (flock($fh,LOCK_SH)) {
347: &logthis("<font color=blue>WARNING: ".
348: 'Could not obtain shared lock in delenv: '.$!);
349: $fh->close();
350: return 'error: '.$!;
351: }
1.56 www 352: @oldenv=<$fh>;
1.89 www 353: $fh->close();
1.56 www 354: }
355: {
356: my $fh;
357: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
358: return 'error';
359: }
1.89 www 360: unless (flock($fh,LOCK_EX)) {
361: &logthis("<font color=blue>WARNING: ".
362: 'Could not obtain exclusive lock in delenv: '.$!);
363: $fh->close();
364: return 'error: '.$!;
365: }
1.56 www 366: map {
367: unless ($_=~/^$delthis/) { print $fh $_; }
368: } @oldenv;
1.87 www 369: $fh->close();
1.5 www 370: }
371: return 'ok';
372: }
1.1 albertel 373:
374: # ------------------------------ Find server with least workload from spare.tab
1.11 www 375:
1.1 albertel 376: sub spareserver {
377: my $tryserver;
378: my $spareserver='';
379: my $lowestserver=100;
380: foreach $tryserver (keys %spareid) {
381: my $answer=reply('load',$tryserver);
382: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
383: $spareserver="http://$hostname{$tryserver}";
384: $lowestserver=$answer;
385: }
386: }
387: return $spareserver;
388: }
389:
390: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 391:
1.1 albertel 392: sub authenticate {
393: my ($uname,$upass,$udom)=@_;
1.12 www 394: $upass=escape($upass);
1.1 albertel 395: if (($perlvar{'lonRole'} eq 'library') &&
396: ($udom eq $perlvar{'lonDefDomain'})) {
1.3 www 397: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$perlvar{'lonHostID'});
1.2 www 398: if ($answer =~ /authorized/) {
1.9 www 399: if ($answer eq 'authorized') {
400: &logthis("User $uname at $udom authorized by local server");
401: return $perlvar{'lonHostID'};
402: }
403: if ($answer eq 'non_authorized') {
404: &logthis("User $uname at $udom rejected by local server");
405: return 'no_host';
406: }
1.2 www 407: }
1.1 albertel 408: }
409:
410: my $tryserver;
411: foreach $tryserver (keys %libserv) {
412: if ($hostdom{$tryserver} eq $udom) {
1.10 www 413: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$tryserver);
1.1 albertel 414: if ($answer =~ /authorized/) {
1.9 www 415: if ($answer eq 'authorized') {
416: &logthis("User $uname at $udom authorized by $tryserver");
417: return $tryserver;
418: }
419: if ($answer eq 'non_authorized') {
420: &logthis("User $uname at $udom rejected by $tryserver");
421: return 'no_host';
422: }
1.1 albertel 423: }
424: }
1.9 www 425: }
426: &logthis("User $uname at $udom could not be authenticated");
1.1 albertel 427: return 'no_host';
428: }
429:
430: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 431:
1.1 albertel 432: sub homeserver {
433: my ($uname,$udom)=@_;
434:
435: my $index="$uname:$udom";
436: if ($homecache{$index}) { return "$homecache{$index}"; }
437:
438: my $tryserver;
439: foreach $tryserver (keys %libserv) {
440: if ($hostdom{$tryserver} eq $udom) {
441: my $answer=reply("home:$udom:$uname",$tryserver);
442: if ($answer eq 'found') {
443: $homecache{$index}=$tryserver;
444: return $tryserver;
445: }
446: }
447: }
448: return 'no_host';
1.70 www 449: }
450:
451: # ------------------------------------- Find the usernames behind a list of IDs
452:
453: sub idget {
454: my ($udom,@ids)=@_;
455: my %returnhash=();
456:
457: my $tryserver;
458: foreach $tryserver (keys %libserv) {
459: if ($hostdom{$tryserver} eq $udom) {
460: my $idlist=join('&',@ids);
461: $idlist=~tr/A-Z/a-z/;
462: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
463: my @answer=();
1.76 www 464: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 465: @answer=split(/\&/,$reply);
466: } ;
467: my $i;
468: for ($i=0;$i<=$#ids;$i++) {
469: if ($answer[$i]) {
470: $returnhash{$ids[$i]}=$answer[$i];
471: }
472: }
473: }
474: }
475: return %returnhash;
476: }
477:
478: # ------------------------------------- Find the IDs behind a list of usernames
479:
480: sub idrget {
481: my ($udom,@unames)=@_;
482: my %returnhash=();
483: map {
484: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
485: } @unames;
486: return %returnhash;
487: }
488:
489: # ------------------------------- Store away a list of names and associated IDs
490:
491: sub idput {
492: my ($udom,%ids)=@_;
493: my %servers=();
494: map {
495: my $uhom=&homeserver($_,$udom);
496: if ($uhom ne 'no_host') {
497: my $id=&escape($ids{$_});
498: $id=~tr/A-Z/a-z/;
499: my $unam=&escape($_);
500: if ($servers{$uhom}) {
501: $servers{$uhom}.='&'.$id.'='.$unam;
502: } else {
503: $servers{$uhom}=$id.'='.$unam;
504: }
505: &critical('put:'.$udom.':'.$unam.':environment:id='.$id,$uhom);
506: }
507: } keys %ids;
508: map {
509: &critical('idput:'.$udom.':'.$servers{$_},$_);
510: } keys %servers;
511: }
512:
513: # ------------------------------------- Find the section of student in a course
514:
515: sub usection {
516: my ($udom,$unam,$courseid)=@_;
517: $courseid=~s/\_/\//g;
518: $courseid=~s/^(\w)/\/$1/;
519: map {
520: my ($key,$value)=split(/\=/,$_);
521: $key=&unescape($key);
522: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
523: my $section=$1;
524: if ($key eq $courseid.'_st') { $section=''; }
525: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
526: my $now=time;
527: my $notactive=0;
528: if ($start) {
529: if ($now<$start) { $notactive=1; }
530: }
531: if ($end) {
532: if ($now>$end) { $notactive=1; }
533: }
534: unless ($notactive) { return $section; }
535: }
536: } split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
537: &homeserver($unam,$udom)));
538: return '-1';
539: }
540:
541: # ------------------------------------- Read an entry from a user's environment
542:
543: sub userenvironment {
544: my ($udom,$unam,@what)=@_;
545: my %returnhash=();
546: my @answer=split(/\&/,
547: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
548: &homeserver($unam,$udom)));
549: my $i;
550: for ($i=0;$i<=$#what;$i++) {
551: $returnhash{$what[$i]}=&unescape($answer[$i]);
552: }
553: return %returnhash;
1.1 albertel 554: }
555:
556: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 557:
1.1 albertel 558: sub subscribe {
559: my $fname=shift;
560: my $author=$fname;
561: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
562: my ($udom,$uname)=split(/\//,$author);
563: my $home=homeserver($uname,$udom);
564: if (($home eq 'no_host') || ($home eq $perlvar{'lonHostID'})) {
565: return 'not_found';
566: }
567: my $answer=reply("sub:$fname",$home);
1.64 www 568: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
569: $answer.=' by '.$home;
570: }
1.1 albertel 571: return $answer;
572: }
573:
1.8 www 574: # -------------------------------------------------------------- Replicate file
575:
576: sub repcopy {
577: my $filename=shift;
1.23 www 578: $filename=~s/\/+/\//g;
1.8 www 579: my $transname="$filename.in.transfer";
1.17 www 580: if ((-e $filename) || (-e $transname)) { return OK; }
1.8 www 581: my $remoteurl=subscribe($filename);
1.64 www 582: if ($remoteurl =~ /^con_lost by/) {
583: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 584: return HTTP_SERVICE_UNAVAILABLE;
585: } elsif ($remoteurl eq 'not_found') {
586: &logthis("Subscribe returned not_found: $filename");
587: return HTTP_NOT_FOUND;
1.64 www 588: } elsif ($remoteurl =~ /^rejected by/) {
589: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 590: return FORBIDDEN;
1.20 www 591: } elsif ($remoteurl eq 'directory') {
592: return OK;
1.8 www 593: } else {
594: my @parts=split(/\//,$filename);
595: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
596: if ($path ne "$perlvar{'lonDocRoot'}/res") {
597: &logthis("Malconfiguration for replication: $filename");
598: return HTTP_BAD_REQUEST;
599: }
600: my $count;
601: for ($count=5;$count<$#parts;$count++) {
602: $path.="/$parts[$count]";
603: if ((-e $path)!=1) {
604: mkdir($path,0777);
605: }
606: }
607: my $ua=new LWP::UserAgent;
608: my $request=new HTTP::Request('GET',"$remoteurl");
609: my $response=$ua->request($request,$transname);
610: if ($response->is_error()) {
611: unlink($transname);
612: my $message=$response->status_line;
1.12 www 613: &logthis("<font color=blue>WARNING:"
614: ." LWP get: $message: $filename</font>");
1.8 www 615: return HTTP_SERVICE_UNAVAILABLE;
616: } else {
1.16 www 617: if ($remoteurl!~/\.meta$/) {
618: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
619: my $mresponse=$ua->request($mrequest,$filename.'.meta');
620: if ($mresponse->is_error()) {
621: unlink($filename.'.meta');
622: &logthis(
623: "<font color=yellow>INFO: No metadata: $filename</font>");
624: }
625: }
1.8 www 626: rename($transname,$filename);
627: return OK;
628: }
629: }
630: }
631:
1.15 www 632: # --------------------------------------------------------- Server Side Include
633:
634: sub ssi {
635:
1.23 www 636: my ($fn,%form)=@_;
1.15 www 637:
638: my $ua=new LWP::UserAgent;
1.23 www 639:
640: my $request;
641:
642: if (%form) {
643: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
644: $request->content(join '&', map { "$_=$form{$_}" } keys %form);
645: } else {
646: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
647: }
648:
1.15 www 649: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
650: my $response=$ua->request($request);
651:
652: return $response->content;
653: }
654:
1.14 www 655: # ------------------------------------------------------------------------- Log
656:
657: sub log {
658: my ($dom,$nam,$hom,$what)=@_;
1.47 www 659: return critical("log:$dom:$nam:$what",$hom);
1.110 www 660: }
661:
662: # --------------------------------------------- Set Expire Date for Spreadsheet
663:
664: sub expirespread {
665: my ($uname,$udom,$stype,$usymb)=@_;
666: my $cid=$ENV{'request.course.id'};
667: if ($cid) {
668: my $now=time;
669: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
670: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
671: $ENV{'course.'.$cid.'.num'}.
672: ':nohist_expirationdates:'.
673: &escape($key).'='.$now,
674: $ENV{'course.'.$cid.'.home'})
675: }
676: return 'ok';
1.14 www 677: }
678:
1.109 www 679: # ----------------------------------------------------- Devalidate Spreadsheets
680:
681: sub devalidate {
682: my $symb=shift;
683: my $cid=$ENV{'request.course.id'};
684: if ($cid) {
685: my $key=$ENV{'user.name'}.':'.$ENV{'user.domain'}.':';
686: my $status=
1.133 albertel 687: &del('nohist_calculatedsheet',
688: [$key.'studentcalc'],
689: $ENV{'course.'.$cid.'.domain'},
690: $ENV{'course.'.$cid.'.num'})
691: .' '.
692: &del('nohist_calculatedsheets_'.$cid,
693: [$key.'assesscalc:'.$symb]);
1.109 www 694: unless ($status eq 'ok ok') {
695: &logthis('Could not devalidate spreadsheet '.
696: $ENV{'user.name'}.' at '.$ENV{'user.domain'}.' for '.
697: $symb.': '.$status);
1.133 albertel 698: }
1.109 www 699: }
700: }
701:
1.9 www 702: # ----------------------------------------------------------------------- Store
703:
704: sub store {
1.124 www 705: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
706: my $home='';
707:
708: if ($stuname) {
709: $home=&homeserver($stuname,$domain);
710: }
711:
1.122 albertel 712: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 713:
714: &devalidate($symb);
715:
716: $symb=escape($symb);
1.122 albertel 717: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
718: if (!$domain) { $domain=$ENV{'user.domain'}; }
719: if (!$stuname) { $stuname=$ENV{'user.name'}; }
720: if (!$home) { $home=$ENV{'user.home'}; }
1.12 www 721: my $namevalue='';
722: map {
1.122 albertel 723: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
724: } keys %$storehash;
1.12 www 725: $namevalue=~s/\&$//;
1.124 www 726: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.9 www 727: }
728:
1.47 www 729: # -------------------------------------------------------------- Critical Store
730:
731: sub cstore {
1.124 www 732: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
733: my $home='';
734:
735: if ($stuname) {
736: $home=&homeserver($stuname,$domain);
737: }
738:
1.122 albertel 739: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 740:
741: &devalidate($symb);
742:
743: $symb=escape($symb);
1.122 albertel 744: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
745: if (!$domain) { $domain=$ENV{'user.domain'}; }
746: if (!$stuname) { $stuname=$ENV{'user.name'}; }
747: if (!$home) { $home=$ENV{'user.home'}; }
748:
1.47 www 749: my $namevalue='';
750: map {
1.122 albertel 751: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
752: } keys %$storehash;
1.47 www 753: $namevalue=~s/\&$//;
1.122 albertel 754: return critical("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.47 www 755: }
756:
1.9 www 757: # --------------------------------------------------------------------- Restore
758:
759: sub restore {
1.124 www 760: my ($symb,$namespace,$domain,$stuname) = @_;
761: my $home='';
762:
763: if ($stuname) {
764: $home=&homeserver($stuname,$domain);
765: }
766:
1.122 albertel 767: if (!$symb) {
768: unless ($symb=escape(&symbread())) { return ''; }
769: } else {
770: $symb=&escape($symb);
771: }
772: if (!$namespace) { unless ($namespace=$ENV{'request.course.id'}) { return ''; } }
773: if (!$domain) { $domain=$ENV{'user.domain'}; }
774: if (!$stuname) { $stuname=$ENV{'user.name'}; }
775: if (!$home) { $home=$ENV{'user.home'}; }
776: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
777:
1.12 www 778: my %returnhash=();
779: map {
780: my ($name,$value)=split(/\=/,$_);
781: $returnhash{&unescape($name)}=&unescape($value);
782: } split(/\&/,$answer);
1.75 www 783: my $version;
784: for ($version=1;$version<=$returnhash{'version'};$version++) {
785: map {
786: $returnhash{$_}=$returnhash{$version.':'.$_};
787: } split(/\:/,$returnhash{$version.':keys'});
788: }
1.13 www 789: return %returnhash;
1.34 www 790: }
791:
792: # ---------------------------------------------------------- Course Description
793:
794: sub coursedescription {
795: my $courseid=shift;
796: $courseid=~s/^\///;
1.49 www 797: $courseid=~s/\_/\//g;
1.34 www 798: my ($cdomain,$cnum)=split(/\//,$courseid);
1.129 albertel 799: my $chome=&homeserver($cnum,$cdomain);
1.34 www 800: if ($chome ne 'no_host') {
1.129 albertel 801: my %returnhash=&dump('environment',$cdomain,$cnum);
802: if (!exists($returnhash{'con_lost'})) {
1.96 www 803: my $normalid=$cdomain.'_'.$cnum;
1.53 www 804: my %envhash=();
1.129 albertel 805: $returnhash{'home'}= $chome;
806: $returnhash{'domain'} = $cdomain;
807: $returnhash{'num'} = $cnum;
1.130 albertel 808: while (my ($name,$value) = each %returnhash) {
1.53 www 809: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.129 albertel 810: }
1.34 www 811: $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
812: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 813: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.54 www 814: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.60 www 815: $envhash{'course.'.$normalid.'.home'}=$chome;
816: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
817: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.53 www 818: &appenv(%envhash);
1.34 www 819: return %returnhash;
820: }
821: }
822: return ();
1.9 www 823: }
1.1 albertel 824:
1.103 harris41 825: # -------------------------------------------------------- Get user privileges
1.11 www 826:
827: sub rolesinit {
828: my ($domain,$username,$authhost)=@_;
829: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 830: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 831: my %allroles=();
832: my %thesepriv=();
833: my $now=time;
1.21 www 834: my $userroles="user.login.time=$now\n";
1.11 www 835: my $thesestr;
836:
837: if ($rolesdump ne '') {
838: map {
1.21 www 839: if ($_!~/^rolesdef\&/) {
1.11 www 840: my ($area,$role)=split(/=/,$_);
1.21 www 841: $area=~s/\_\w\w$//;
1.11 www 842: my ($trole,$tend,$tstart)=split(/_/,$role);
1.21 www 843: $userroles.='user.role.'.$trole.'.'.$area.'='.
844: $tstart.'.'.$tend."\n";
1.11 www 845: if ($tend!=0) {
846: if ($tend<$now) {
847: $trole='';
848: }
849: }
850: if ($tstart!=0) {
851: if ($tstart>$now) {
852: $trole='';
853: }
854: }
855: if (($area ne '') && ($trole ne '')) {
1.50 www 856: my $spec=$trole.'.'.$area;
1.12 www 857: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
858: if ($trole =~ /^cr\//) {
859: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
860: my $homsvr=homeserver($rauthor,$rdomain);
861: if ($hostname{$homsvr} ne '') {
862: my $roledef=
1.21 www 863: reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
1.12 www 864: $homsvr);
865: if (($roledef ne 'con_lost') && ($roledef ne '')) {
866: my ($syspriv,$dompriv,$coursepriv)=
1.21 www 867: split(/\_/,unescape($roledef));
1.50 www 868: $allroles{'cm./'}.=':'.$syspriv;
869: $allroles{$spec.'./'}.=':'.$syspriv;
1.12 www 870: if ($tdomain ne '') {
1.50 www 871: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
872: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
1.12 www 873: if ($trest ne '') {
1.50 www 874: $allroles{'cm.'.$area}.=':'.$coursepriv;
875: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
1.12 www 876: }
877: }
878: }
1.11 www 879: }
1.12 www 880: } else {
1.50 www 881: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
882: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
1.12 www 883: if ($tdomain ne '') {
1.50 www 884: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
885: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1.12 www 886: if ($trest ne '') {
1.50 www 887: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
888: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
1.12 www 889: }
890: }
1.11 www 891: }
1.12 www 892: }
893: }
1.11 www 894: } split(/&/,$rolesdump);
1.125 www 895: my $adv=0;
1.128 www 896: my $author=0;
1.11 www 897: map {
898: %thesepriv=();
1.146 www 899: if (($_!~/^st/) && ($_!~/^ta/) && ($_!~/^cm/)) { $adv=1; }
1.128 www 900: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
1.11 www 901: map {
902: if ($_ ne '') {
1.103 harris41 903: my ($privilege,$restrictions)=split(/&/,$_);
1.11 www 904: if ($restrictions eq '') {
1.103 harris41 905: $thesepriv{$privilege}='F';
1.11 www 906: } else {
1.103 harris41 907: if ($thesepriv{$privilege} ne 'F') {
908: $thesepriv{$privilege}.=$restrictions;
1.11 www 909: }
910: }
911: }
912: } split(/:/,$allroles{$_});
913: $thesestr='';
914: map { $thesestr.=':'.$_.'&'.$thesepriv{$_}; } keys %thesepriv;
915: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
916: } keys %allroles;
1.128 www 917: $userroles.='user.adv='.$adv."\n".
918: 'user.author='.$author."\n";
1.126 www 919: $ENV{'user.adv'}=$adv;
1.11 www 920: }
921: return $userroles;
922: }
923:
1.12 www 924: # --------------------------------------------------------------- get interface
925:
926: sub get {
1.131 albertel 927: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 928: my $items='';
929: map {
930: $items.=escape($_).'&';
1.131 albertel 931: } @$storearr;
1.12 www 932: $items=~s/\&$//;
1.131 albertel 933: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
934: if (!$uname) { $uname=$ENV{'user.name'}; }
935: my $uhome=&homeserver($uname,$udomain);
936:
1.133 albertel 937: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 938: my @pairs=split(/\&/,$rep);
939: my %returnhash=();
1.42 www 940: my $i=0;
1.15 www 941: map {
1.42 www 942: $returnhash{$_}=unescape($pairs[$i]);
943: $i++;
1.131 albertel 944: } @$storearr;
1.15 www 945: return %returnhash;
1.27 www 946: }
947:
948: # --------------------------------------------------------------- del interface
949:
950: sub del {
1.133 albertel 951: my ($namespace,$storearr,$udomain,$uname)=@_;
1.27 www 952: my $items='';
953: map {
954: $items.=escape($_).'&';
1.133 albertel 955: } @$storearr;
1.27 www 956: $items=~s/\&$//;
1.133 albertel 957: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
958: if (!$uname) { $uname=$ENV{'user.name'}; }
959: my $uhome=&homeserver($uname,$udomain);
960:
961: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 962: }
963:
964: # -------------------------------------------------------------- dump interface
965:
966: sub dump {
1.129 albertel 967: my ($namespace,$udomain,$uname)=@_;
968: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
969: if (!$uname) { $uname=$ENV{'user.name'}; }
970: my $uhome=&homeserver($uname,$udomain);
971: my $rep=reply("dump:$udomain:$uname:$namespace",$uhome);
1.12 www 972: my @pairs=split(/\&/,$rep);
973: my %returnhash=();
974: map {
975: my ($key,$value)=split(/=/,$_);
1.29 www 976: $returnhash{unescape($key)}=unescape($value);
1.12 www 977: } @pairs;
978: return %returnhash;
979: }
980:
981: # --------------------------------------------------------------- put interface
982:
983: sub put {
1.134 albertel 984: my ($namespace,$storehash,$udomain,$uname)=@_;
985: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
986: if (!$uname) { $uname=$ENV{'user.name'}; }
987: my $uhome=&homeserver($uname,$udomain);
1.12 www 988: my $items='';
989: map {
1.134 albertel 990: $items.=&escape($_).'='.&escape($$storehash{$_}).'&';
991: } keys %$storehash;
1.12 www 992: $items=~s/\&$//;
1.134 albertel 993: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1.47 www 994: }
995:
996: # ------------------------------------------------------ critical put interface
997:
998: sub cput {
1.134 albertel 999: my ($namespace,$storehash,$udomain,$uname)=@_;
1000: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1001: if (!$uname) { $uname=$ENV{'user.name'}; }
1002: my $uhome=&homeserver($uname,$udomain);
1.47 www 1003: my $items='';
1004: map {
1.134 albertel 1005: $items.=escape($_).'='.escape($$storehash{$_}).'&';
1006: } keys %$storehash;
1.47 www 1007: $items=~s/\&$//;
1.134 albertel 1008: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 1009: }
1010:
1011: # -------------------------------------------------------------- eget interface
1012:
1013: sub eget {
1.133 albertel 1014: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 1015: my $items='';
1016: map {
1017: $items.=escape($_).'&';
1.133 albertel 1018: } @$storearr;
1.12 www 1019: $items=~s/\&$//;
1.133 albertel 1020: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1021: if (!$uname) { $uname=$ENV{'user.name'}; }
1022: my $uhome=&homeserver($uname,$udomain);
1023: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 1024: my @pairs=split(/\&/,$rep);
1025: my %returnhash=();
1.42 www 1026: my $i=0;
1.12 www 1027: map {
1.42 www 1028: $returnhash{$_}=unescape($pairs[$i]);
1029: $i++;
1.133 albertel 1030: } @$storearr;
1.12 www 1031: return %returnhash;
1032: }
1033:
1.103 harris41 1034: # ------------------------------------------------- Check for a user privilege
1.12 www 1035:
1036: sub allowed {
1037: my ($priv,$uri)=@_;
1.52 www 1038: $uri=&declutter($uri);
1.29 www 1039:
1.54 www 1040: # Free bre access to adm and meta resources
1.29 www 1041:
1.54 www 1042: if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 1043: return 'F';
1044: }
1.29 www 1045:
1.52 www 1046: my $thisallowed='';
1047: my $statecond=0;
1048: my $courseprivid='';
1049:
1050: # Course
1051:
1052: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/$priv\&([^\:]*)/) {
1053: $thisallowed.=$1;
1054: }
1.29 www 1055:
1.52 www 1056: # Domain
1057:
1058: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1059: =~/$priv\&([^\:]*)/) {
1.12 www 1060: $thisallowed.=$1;
1061: }
1.52 www 1062:
1063: # Course: uri itself is a course
1.66 www 1064: my $courseuri=$uri;
1065: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 1066: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 1067:
1.83 www 1068: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.52 www 1069: =~/$priv\&([^\:]*)/) {
1.12 www 1070: $thisallowed.=$1;
1071: }
1.29 www 1072:
1.52 www 1073: # Full access at system, domain or course-wide level? Exit.
1.29 www 1074:
1075: if ($thisallowed=~/F/) {
1076: return 'F';
1077: }
1078:
1.52 www 1079: # If this is generating or modifying users, exit with special codes
1.29 www 1080:
1.52 www 1081: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:'=~/\:$priv\:/) {
1082: return $thisallowed;
1083: }
1084: #
1.103 harris41 1085: # Gathered so far: system, domain and course wide privileges
1.52 www 1086: #
1087: # Course: See if uri or referer is an individual resource that is part of
1088: # the course
1089:
1090: if ($ENV{'request.course.id'}) {
1091: $courseprivid=$ENV{'request.course.id'};
1092: if ($ENV{'request.course.sec'}) {
1093: $courseprivid.='/'.$ENV{'request.course.sec'};
1094: }
1095: $courseprivid=~s/\_/\//;
1096: my $checkreferer=1;
1097: my @uriparts=split(/\//,$uri);
1098: my $filename=$uriparts[$#uriparts];
1099: my $pathname=$uri;
1100: $pathname=~s/\/$filename$//;
1101: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.54 www 1102: /\&$filename\:([\d\|]+)\&/) {
1.52 www 1103: $statecond=$1;
1104: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1105: =~/$priv\&([^\:]*)/) {
1106: $thisallowed.=$1;
1107: $checkreferer=0;
1108: }
1.29 www 1109: }
1.83 www 1110:
1.148 ! www 1111: if ($checkreferer) {
! 1112: my $refuri=$ENV{'httpref.'.$uri};
! 1113:
! 1114: unless ($refuri) {
! 1115: map {
! 1116: if ($_=~/^httpref\..*\*/) {
! 1117: my $pattern=$_;
! 1118: $pattern=~s/\*/\[\^\/\]\+/g;
! 1119: $pattern=~s/\//\\\//g;
! 1120: if ($uri=~/$pattern/) {
! 1121: $refuri=$ENV{$_};
! 1122: }
! 1123: }
! 1124: } keys %ENV;
! 1125: }
! 1126: if ($refuri) {
1.53 www 1127: my @uriparts=split(/\//,$refuri);
1.52 www 1128: my $filename=$uriparts[$#uriparts];
1.53 www 1129: my $pathname=$refuri;
1.52 www 1130: $pathname=~s/\/$filename$//;
1.55 www 1131: my @filenameparts=split(/\./,$uri);
1.53 www 1132: if (&fileembstyle($filenameparts[$#filenameparts]) ne 'ssi') {
1133: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.54 www 1134: /\&$filename\:([\d\|]+)\&/) {
1.53 www 1135: my $refstatecond=$1;
1.52 www 1136: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1137: =~/$priv\&([^\:]*)/) {
1138: $thisallowed.=$1;
1.53 www 1139: $uri=$refuri;
1140: $statecond=$refstatecond;
1.52 www 1141: }
1.53 www 1142: }
1.52 www 1143: }
1.148 ! www 1144: }
1.29 www 1145: }
1.52 www 1146: }
1.29 www 1147:
1.52 www 1148: #
1.103 harris41 1149: # Gathered now: all privileges that could apply, and condition number
1.52 www 1150: #
1151: #
1152: # Full or no access?
1153: #
1.29 www 1154:
1.52 www 1155: if ($thisallowed=~/F/) {
1156: return 'F';
1157: }
1.29 www 1158:
1.52 www 1159: unless ($thisallowed) {
1160: return '';
1161: }
1.29 www 1162:
1.52 www 1163: # Restrictions exist, deal with them
1164: #
1165: # C:according to course preferences
1166: # R:according to resource settings
1167: # L:unless locked
1168: # X:according to user session state
1169: #
1170:
1171: # Possibly locked functionality, check all courses
1.54 www 1172: # Locks might take effect only after 10 minutes cache expiration for other
1173: # courses, and 2 minutes for current course
1.52 www 1174:
1175: my $envkey;
1176: if ($thisallowed=~/L/) {
1177: foreach $envkey (keys %ENV) {
1.54 www 1178: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
1179: my $courseid=$2;
1180: my $roleid=$1.'.'.$2;
1.92 www 1181: $courseid=~s/^\///;
1.54 www 1182: my $expiretime=600;
1183: if ($ENV{'request.role'} eq $roleid) {
1184: $expiretime=120;
1185: }
1186: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
1187: my $prefix='course.'.$cdom.'_'.$cnum.'.';
1188: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
1189: &coursedescription($courseid);
1190: }
1191: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,$csec\,/)
1192: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
1193: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 1194: &log($ENV{'user.domain'},$ENV{'user.name'},
1195: $ENV{'user.host'},
1196: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 1197: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1198: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1199: return '';
1200: }
1201: }
1.54 www 1202: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/)
1203: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
1204: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 1205: &log($ENV{'user.domain'},$ENV{'user.name'},
1206: $ENV{'user.host'},
1207: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 1208: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1209: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1210: return '';
1211: }
1212: }
1213: }
1.29 www 1214: }
1.52 www 1215: }
1216:
1217: #
1218: # Rest of the restrictions depend on selected course
1219: #
1220:
1221: unless ($ENV{'request.course.id'}) {
1222: return '1';
1223: }
1.29 www 1224:
1.52 www 1225: #
1226: # Now user is definitely in a course
1227: #
1.53 www 1228:
1229:
1230: # Course preferences
1231:
1232: if ($thisallowed=~/C/) {
1.54 www 1233: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1234: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1235: =~/\,$rolecode\,/) {
1.57 www 1236: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1237: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.54 www 1238: $ENV{'request.course.id'});
1239: return '';
1240: }
1.53 www 1241: }
1242:
1243: # Resource preferences
1244:
1245: if ($thisallowed=~/R/) {
1.54 www 1246: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1247: my $filename=$perlvar{'lonDocRoot'}.'/res/'.$uri.'.meta';
1248: if (-e $filename) {
1249: my @content;
1250: {
1251: my $fh=Apache::File->new($filename);
1252: @content=<$fh>;
1253: }
1254: if (join('',@content)=~
1255: /\<roledeny[^\>]*\>[^\<]*$rolecode[^\<]*\<\/roledeny\>/) {
1.57 www 1256: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1257: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.54 www 1258: return '';
1259:
1260: }
1261: }
1.53 www 1262: }
1.30 www 1263:
1.52 www 1264: # Restricted by state?
1.30 www 1265:
1.52 www 1266: if ($thisallowed=~/X/) {
1267: if (&condval($statecond)) {
1268: return '2';
1269: } else {
1270: return '';
1271: }
1272: }
1.30 www 1273:
1.52 www 1274: return 'F';
1.12 www 1275: }
1276:
1277: # ----------------------------------------------------------------- Define Role
1278:
1279: sub definerole {
1280: if (allowed('mcr','/')) {
1281: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.21 www 1282: map {
1283: my ($crole,$cqual)=split(/\&/,$_);
1284: if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
1285: if ($pr{'cr:s'}=~/$crole\&/) {
1286: if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
1287: return "refused:s:$crole&$cqual";
1288: }
1289: }
1290: } split('/',$sysrole);
1291: map {
1292: my ($crole,$cqual)=split(/\&/,$_);
1293: if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
1294: if ($pr{'cr:d'}=~/$crole\&/) {
1295: if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
1296: return "refused:d:$crole&$cqual";
1297: }
1298: }
1299: } split('/',$domrole);
1300: map {
1301: my ($crole,$cqual)=split(/\&/,$_);
1302: if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
1303: if ($pr{'cr:c'}=~/$crole\&/) {
1304: if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
1305: return "refused:c:$crole&$cqual";
1306: }
1307: }
1308: } split('/',$courole);
1.12 www 1309: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1310: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 1311: "rolesdef_$rolename=".
1312: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 1313: return reply($command,$ENV{'user.home'});
1314: } else {
1315: return 'refused';
1316: }
1.105 harris41 1317: }
1318:
1319: # ---------------- Make a metadata query against the network of library servers
1320:
1321: sub metadata_query {
1.116 harris41 1322: my ($query,$custom,$customshow)=@_;
1.118 harris41 1323: # need to put in a library server loop here and return a hash
1.120 harris41 1324: my %rhash;
1.123 harris41 1325: for my $server (keys %libserv) {
1.118 harris41 1326: unless ($custom or $customshow) {
1327: my $reply=&reply("querysend:".&escape($query),$server);
1328: $rhash{$server}=$reply;
1329: }
1330: else {
1331: my $reply=&reply("querysend:".&escape($query).':'.
1332: &escape($custom).':'.&escape($customshow),
1333: $server);
1334: $rhash{$server}=$reply;
1335: }
1.112 harris41 1336: }
1.118 harris41 1337: return \%rhash;
1.12 www 1338: }
1339:
1340: # ------------------------------------------------------------------ Plain Text
1341:
1342: sub plaintext {
1.22 www 1343: my $short=shift;
1344: return $prp{$short};
1.12 www 1345: }
1346:
1.25 www 1347: # ------------------------------------------------------------------ Plain Text
1348:
1349: sub fileembstyle {
1350: my $ending=shift;
1351: return $fe{$ending};
1352: }
1353:
1354: # ------------------------------------------------------------ Description Text
1355:
1.74 www 1356: sub filedescription {
1.25 www 1357: my $ending=shift;
1358: return $fd{$ending};
1359: }
1360:
1.12 www 1361: # ----------------------------------------------------------------- Assign Role
1362:
1363: sub assignrole {
1.21 www 1364: my ($udom,$uname,$url,$role,$end,$start)=@_;
1365: my $mrole;
1366: if ($role =~ /^cr\//) {
1.104 www 1367: unless (&allowed('ccr',$url)) {
1368: &logthis('Refused custom assignrole: '.
1369: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1370: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1371: return 'refused';
1372: }
1.21 www 1373: $mrole='cr';
1374: } else {
1.82 www 1375: my $cwosec=$url;
1.83 www 1376: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.104 www 1377: unless (&allowed('c'.$role,$cwosec)) {
1378: &logthis('Refused assignrole: '.
1379: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1380: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1381: return 'refused';
1382: }
1.21 www 1383: $mrole=$role;
1384: }
1385: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1386: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 1387: if ($end) { $command.='_'.$end; }
1.21 www 1388: if ($start) {
1389: if ($end) {
1.81 www 1390: $command.='_'.$start;
1.21 www 1391: } else {
1.81 www 1392: $command.='_0_'.$start;
1.21 www 1393: }
1394: }
1395: return &reply($command,&homeserver($uname,$udom));
1.80 www 1396: }
1397:
1.81 www 1398: # --------------------------------------------------------------- Modify a user
1.80 www 1399:
1400:
1.81 www 1401: sub modifyuser {
1.80 www 1402: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene)=@_;
1.81 www 1403: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1404: $umode.', '.$first.', '.$middle.', '.
1405: $last.', '.$gene.' by '.
1406: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1407: my $uhome=&homeserver($uname,$udom);
1408: # ----------------------------------------------------------------- Create User
1.81 www 1409: if (($uhome eq 'no_host') && ($umode) && ($upass)) {
1.80 www 1410: my $unhome='';
1411: if ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1412: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1413: } else {
1414: my $tryserver;
1.81 www 1415: my $loadm=10000000;
1.80 www 1416: foreach $tryserver (keys %libserv) {
1417: if ($hostdom{$tryserver} eq $udom) {
1418: my $answer=reply('load',$tryserver);
1419: if (($answer=~/\d+/) && ($answer<$loadm)) {
1420: $loadm=$answer;
1421: $unhome=$tryserver;
1422: }
1423: }
1424: }
1425: }
1426: if (($unhome eq '') || ($unhome eq 'no_host')) {
1427: return 'error: find home';
1428: }
1429: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
1430: &escape($upass),$unhome);
1431: unless ($reply eq 'ok') {
1432: return 'error: '.$reply;
1433: }
1434: $uhome=&homeserver($uname,$udom);
1435: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1436: return 'error: verify home';
1437: }
1438: }
1439: # ---------------------------------------------------------------------- Add ID
1440: if ($uid) {
1441: $uid=~tr/A-Z/a-z/;
1442: my %uidhash=&idrget($udom,$uname);
1443: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)) {
1444: unless ($uid eq $uidhash{$uname}) {
1445: return 'error: mismatch '.$uidhash{$uname}.' versus '.$uid;
1446: }
1447: } else {
1448: &idput($udom,($uname => $uid));
1449: }
1450: }
1451: # -------------------------------------------------------------- Add names, etc
1.134 albertel 1452: my %names=&get('environment',
1453: ['firstname','middlename','lastname','generation'],
1454: $udom,$uname);
1455: if ($first) { $names{'firstname'} = $first; }
1456: if ($middle) { $names{'middlename'} = $middle; }
1457: if ($last) { $names{'lastname'} = $last; }
1458: if ($gene) { $names{'generation'} = $gene; }
1459: my $reply = &put('environment', \%names, $udom,$uname);
1460: if ($reply ne 'ok') { return 'error: '.$reply; }
1.81 www 1461: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1462: $umode.', '.$first.', '.$middle.', '.
1463: $last.', '.$gene.' by '.
1464: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.134 albertel 1465: return 'ok';
1.80 www 1466: }
1467:
1.81 www 1468: # -------------------------------------------------------------- Modify student
1.80 www 1469:
1.81 www 1470: sub modifystudent {
1471: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1472: $end,$start)=@_;
1473: my $cid='';
1474: unless ($cid=$ENV{'request.course.id'}) {
1.80 www 1475: return 'not_in_class';
1476: }
1477: # --------------------------------------------------------------- Make the user
1.81 www 1478: my $reply=&modifyuser
1.80 www 1479: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene);
1480: unless ($reply eq 'ok') { return $reply; }
1.81 www 1481: my $uhome=&homeserver($uname,$udom);
1482: if (($uhome eq '') || ($uhome eq 'no_host')) {
1483: return 'error: no such user';
1484: }
1.80 www 1485: # -------------------------------------------------- Add student to course list
1.81 www 1486: my $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1487: $ENV{'course.'.$cid.'.num'}.':classlist:'.
1488: &escape($uname.':'.$udom).'='.
1489: &escape($end.':'.$start),
1490: $ENV{'course.'.$cid.'.home'});
1491: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
1492: return 'error: '.$reply;
1493: }
1.80 www 1494: # ---------------------------------------------------- Add student role to user
1.83 www 1495: my $uurl='/'.$cid;
1.81 www 1496: $uurl=~s/\_/\//g;
1497: if ($usec) {
1498: $uurl.='/'.$usec;
1499: }
1500: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 1501: }
1502:
1.84 www 1503: # ------------------------------------------------- Write to course preferences
1504:
1505: sub writecoursepref {
1506: my ($courseid,%prefs)=@_;
1507: $courseid=~s/^\///;
1508: $courseid=~s/\_/\//g;
1509: my ($cdomain,$cnum)=split(/\//,$courseid);
1510: my $chome=homeserver($cnum,$cdomain);
1511: if (($chome eq '') || ($chome eq 'no_host')) {
1512: return 'error: no such course';
1513: }
1514: my $cstring='';
1515: map {
1516: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1517: } keys %prefs;
1518: $cstring=~s/\&$//;
1519: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
1520: }
1521:
1522: # ---------------------------------------------------------- Make/modify course
1523:
1524: sub createcourse {
1525: my ($udom,$description,$url)=@_;
1526: $url=&declutter($url);
1527: my $cid='';
1528: unless (&allowed('ccc',$ENV{'user.domain'})) {
1529: return 'refused';
1530: }
1531: unless ($udom eq $ENV{'user.domain'}) {
1532: return 'refused';
1533: }
1534: # ------------------------------------------------------------------- Create ID
1535: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1536: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1537: # ----------------------------------------------- Make sure that does not exist
1538: my $uhome=&homeserver($uname,$udom);
1539: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1540: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
1541: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1542: $uhome=&homeserver($uname,$udom);
1543: unless (($uhome eq '') || ($uhome eq 'no_host')) {
1544: return 'error: unable to generate unique course-ID';
1545: }
1546: }
1547: # ------------------------------------------------------------- Make the course
1548: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
1549: $ENV{'user.home'});
1550: unless ($reply eq 'ok') { return 'error: '.$reply; }
1551: my $uhome=&homeserver($uname,$udom);
1552: if (($uhome eq '') || ($uhome eq 'no_host')) {
1553: return 'error: no such course';
1554: }
1555: &writecoursepref($udom.'_'.$uname,
1556: ('description' => $description,
1557: 'url' => $url));
1558: return '/'.$udom.'/'.$uname;
1559: }
1560:
1.21 www 1561: # ---------------------------------------------------------- Assign Custom Role
1562:
1563: sub assigncustomrole {
1564: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
1565: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
1566: $end,$start);
1567: }
1568:
1569: # ----------------------------------------------------------------- Revoke Role
1570:
1571: sub revokerole {
1572: my ($udom,$uname,$url,$role)=@_;
1573: my $now=time;
1574: return &assignrole($udom,$uname,$url,$role,$now);
1575: }
1576:
1577: # ---------------------------------------------------------- Revoke Custom Role
1578:
1579: sub revokecustomrole {
1580: my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
1581: my $now=time;
1582: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
1.17 www 1583: }
1584:
1585: # ------------------------------------------------------------ Directory lister
1586:
1587: sub dirlist {
1588: my $uri=shift;
1.18 www 1589: $uri=~s/^\///;
1590: $uri=~s/\/$//;
1.19 www 1591: my ($res,$udom,$uname,@rest)=split(/\//,$uri);
1592: if ($udom) {
1593: if ($uname) {
1594: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
1595: homeserver($uname,$udom));
1596: return split(/:/,$listing);
1597: } else {
1598: my $tryserver;
1599: my %allusers=();
1600: foreach $tryserver (keys %libserv) {
1601: if ($hostdom{$tryserver} eq $udom) {
1602: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
1603: $tryserver);
1604: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
1605: && ($listing ne 'con_lost')) {
1606: map {
1607: my ($entry,@stat)=split(/&/,$_);
1608: $allusers{$entry}=1;
1609: } split(/:/,$listing);
1610: }
1611: }
1612: }
1613: my $alluserstr='';
1614: map {
1615: $alluserstr.=$_.'&user:';
1616: } sort keys %allusers;
1617: $alluserstr=~s/:$//;
1618: return split(/:/,$alluserstr);
1619: }
1620: } else {
1621: my $tryserver;
1622: my %alldom=();
1623: foreach $tryserver (keys %libserv) {
1624: $alldom{$hostdom{$tryserver}}=1;
1625: }
1626: my $alldomstr='';
1627: map {
1628: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
1629: } sort keys %alldom;
1630: $alldomstr=~s/:$//;
1631: return split(/:/,$alldomstr);
1632: }
1.26 www 1633: }
1634:
1635: # -------------------------------------------------------- Value of a Condition
1636:
1.40 www 1637: sub directcondval {
1638: my $number=shift;
1639: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
1640: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
1641: } else {
1642: return 2;
1643: }
1644: }
1645:
1.26 www 1646: sub condval {
1647: my $condidx=shift;
1648: my $result=0;
1.54 www 1649: my $allpathcond='';
1650: map {
1651: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
1652: $allpathcond.=
1653: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
1654: }
1655: } split(/\|/,$condidx);
1656: $allpathcond=~s/\|$//;
1.33 www 1657: if ($ENV{'request.course.id'}) {
1.54 www 1658: if ($allpathcond) {
1.26 www 1659: my $operand='|';
1660: my @stack;
1661: map {
1662: if ($_ eq '(') {
1663: push @stack,($operand,$result)
1664: } elsif ($_ eq ')') {
1665: my $before=pop @stack;
1666: if (pop @stack eq '&') {
1667: $result=$result>$before?$before:$result;
1668: } else {
1669: $result=$result>$before?$result:$before;
1670: }
1671: } elsif (($_ eq '&') || ($_ eq '|')) {
1672: $operand=$_;
1673: } else {
1.40 www 1674: my $new=directcondval($_);
1.26 www 1675: if ($operand eq '&') {
1676: $result=$result>$new?$new:$result;
1677: } else {
1678: $result=$result>$new?$result:$new;
1679: }
1680: }
1.54 www 1681: } ($allpathcond=~/(\d+|\(|\)|\&|\|)/g);
1.26 www 1682: }
1683: }
1684: return $result;
1.28 www 1685: }
1686:
1687: # --------------------------------------------------------- Value of a Variable
1688:
1.58 www 1689: sub EXT {
1.147 www 1690: my ($varname,$symbparm)=@_;
1.68 www 1691: unless ($varname) { return ''; }
1.48 www 1692: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
1693: my $rest;
1694: if ($therest[0]) {
1695: $rest=join('.',@therest);
1696: } else {
1697: $rest='';
1698: }
1.57 www 1699: my $qualifierrest=$qualifier;
1700: if ($rest) { $qualifierrest.='.'.$rest; }
1701: my $spacequalifierrest=$space;
1702: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 1703: if ($realm eq 'user') {
1.48 www 1704: # --------------------------------------------------------------- user.resource
1705: if ($space eq 'resource') {
1.122 albertel 1706: my %restored=&restore();
1.57 www 1707: return $restored{$qualifierrest};
1.48 www 1708: # ----------------------------------------------------------------- user.access
1709: } elsif ($space eq 'access') {
1710: return &allowed($qualifier,$rest);
1711: # ------------------------------------------ user.preferences, user.environment
1712: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.57 www 1713: return $ENV{join('.',('environment',$qualifierrest))};
1.48 www 1714: # ----------------------------------------------------------------- user.course
1715: } elsif ($space eq 'course') {
1716: return $ENV{join('.',('request.course',$qualifier))};
1717: # ------------------------------------------------------------------- user.role
1718: } elsif ($space eq 'role') {
1719: my ($role,$where)=split(/\./,$ENV{'request.role'});
1720: if ($qualifier eq 'value') {
1721: return $role;
1722: } elsif ($qualifier eq 'extent') {
1723: return $where;
1724: }
1725: # ----------------------------------------------------------------- user.domain
1726: } elsif ($space eq 'domain') {
1727: return $ENV{'user.domain'};
1728: # ------------------------------------------------------------------- user.name
1729: } elsif ($space eq 'name') {
1730: return $ENV{'user.name'};
1731: # ---------------------------------------------------- Any other user namespace
1.29 www 1732: } else {
1.48 www 1733: my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
1.131 albertel 1734: my %reply=&get($space,[$item]);
1.48 www 1735: return $reply{$item};
1736: }
1737: } elsif ($realm eq 'request') {
1738: # ------------------------------------------------------------- request.browser
1739: if ($space eq 'browser') {
1740: return $ENV{'browser.'.$qualifier};
1.57 www 1741: # ------------------------------------------------------------ request.filename
1742: } else {
1743: return $ENV{'request.'.$spacequalifierrest};
1.29 www 1744: }
1.28 www 1745: } elsif ($realm eq 'course') {
1.48 www 1746: # ---------------------------------------------------------- course.description
1.127 ng 1747: return $ENV{'course.'.$ENV{'request.course.id'}.'.'.
1.57 www 1748: $spacequalifierrest};
1749: } elsif ($realm eq 'resource') {
1.127 ng 1750: if ($ENV{'request.course.id'}) {
1.145 www 1751:
1752: # print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
1753:
1754:
1.60 www 1755: # ----------------------------------------------------- Cascading lookup scheme
1.147 www 1756: my $symbp;
1757: if ($symbparm) {
1758: $symbp=$symbparm;
1759: } else {
1760: $symbp=&symbread();
1761: }
1.127 ng 1762: my $mapp=(split(/\_\_\_/,$symbp))[0];
1.69 www 1763:
1.127 ng 1764: my $symbparm=$symbp.'.'.$spacequalifierrest;
1765: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
1.69 www 1766:
1.127 ng 1767: my $seclevel=
1.69 www 1768: $ENV{'request.course.id'}.'.['.
1769: $ENV{'request.course.sec'}.'].'.$spacequalifierrest;
1.127 ng 1770: my $seclevelr=
1.69 www 1771: $ENV{'request.course.id'}.'.['.
1772: $ENV{'request.course.sec'}.'].'.$symbparm;
1.127 ng 1773: my $seclevelm=
1.69 www 1774: $ENV{'request.course.id'}.'.['.
1775: $ENV{'request.course.sec'}.'].'.$mapparm;
1776:
1.127 ng 1777: my $courselevel=
1.60 www 1778: $ENV{'request.course.id'}.'.'.$spacequalifierrest;
1.127 ng 1779: my $courselevelr=
1.69 www 1780: $ENV{'request.course.id'}.'.'.$symbparm;
1.127 ng 1781: my $courselevelm=
1.69 www 1782: $ENV{'request.course.id'}.'.'.$mapparm;
1783:
1.60 www 1784: # ----------------------------------------------------------- first, check user
1.127 ng 1785: my %resourcedata=get('resourcedata',
1.131 albertel 1786: [$courselevelr,$courselevelm,$courselevel]);
1.127 ng 1787: if (($resourcedata{$courselevelr}!~/^error\:/) &&
1788: ($resourcedata{$courselevelr}!~/^con_lost/)) {
1.69 www 1789:
1.127 ng 1790: if ($resourcedata{$courselevelr}) {
1791: return $resourcedata{$courselevelr}; }
1792: if ($resourcedata{$courselevelm}) {
1793: return $resourcedata{$courselevelm}; }
1794: if ($resourcedata{$courselevel}) { return $resourcedata{$courselevel}; }
1.69 www 1795:
1.94 www 1796: } else {
1797: if ($resourcedata{$courselevelr}!~/No such file/) {
1798: &logthis("<font color=blue>WARNING:".
1799: " Trying to get resource data for ".$ENV{'user.name'}." at "
1800: .$ENV{'user.domain'}.": ".$resourcedata{$courselevelr}.
1801: "</font>");
1802: }
1.63 www 1803: }
1.95 www 1804:
1.60 www 1805: # -------------------------------------------------------- second, check course
1.96 www 1806:
1.60 www 1807: my $reply=&reply('get:'.
1.96 www 1808: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.':'.
1809: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
1.79 www 1810: ':resourcedata:'.
1811: &escape($seclevelr).'&'.&escape($seclevelm).'&'.&escape($seclevel).'&'.
1812: &escape($courselevelr).'&'.&escape($courselevelm).'&'.&escape($courselevel),
1.96 www 1813: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
1.63 www 1814: if ($reply!~/^error\:/) {
1.79 www 1815: map {
1816: if ($_) { return &unescape($_); }
1817: } split(/\&/,$reply);
1.63 www 1818: }
1.94 www 1819: if (($reply=~/^con_lost/) || ($reply=~/^error\:/)) {
1820: &logthis("<font color=blue>WARNING:".
1.95 www 1821: " Getting ".$reply." asking for ".$varname." for ".
1.96 www 1822: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
1.95 www 1823: ' at '.
1.96 www 1824: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.
1.95 www 1825: ' from '.
1.96 www 1826: $ENV{'course.'.$ENV{'request.course.id'}.'.home'}.
1.94 www 1827: "</font>");
1828: }
1.60 www 1829: # ------------------------------------------------------ third, check map parms
1.65 www 1830: my %parmhash=();
1831: my $thisparm='';
1832: if (tie(%parmhash,'GDBM_File',
1833: $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER,0640)) {
1834: $thisparm=$parmhash{$symbparm};
1835: untie(%parmhash);
1.60 www 1836: }
1.65 www 1837: if ($thisparm) { return $thisparm; }
1.60 www 1838: }
1839:
1840: # --------------------------------------------- last, look in resource metadata
1.71 www 1841:
1.78 www 1842: $spacequalifierrest=~s/\./\_/;
1.71 www 1843: my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest);
1844: if ($metadata) { return $metadata; }
1.78 www 1845: $metadata=&metadata($ENV{'request.filename'},
1846: 'parameter_'.$spacequalifierrest);
1847: if ($metadata) { return $metadata; }
1.142 www 1848:
1.145 www 1849: # ------------------------------------------------------------------ Cascade up
1850:
1851: unless ($space eq '0') {
1852: my ($part,$id)=split(/\_/,$space);
1853: if ($id) {
1.147 www 1854: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
1855: $symbparm);
1.145 www 1856: if ($partgeneral) { return $partgeneral; }
1857: } else {
1.147 www 1858: my $resourcegeneral=&EXT('resource.0.'.$qualifierrest,
1859: $symbparm);
1.145 www 1860: if ($resourcegeneral) { return $resourcegeneral; }
1861: }
1862: }
1.71 www 1863:
1.48 www 1864: # ---------------------------------------------------- Any other user namespace
1865: } elsif ($realm eq 'environment') {
1866: # ----------------------------------------------------------------- environment
1.127 ng 1867: return $ENV{'environment.'.$spacequalifierrest};
1.28 www 1868: } elsif ($realm eq 'system') {
1.48 www 1869: # ----------------------------------------------------------------- system.time
1870: if ($space eq 'time') {
1871: return time;
1872: }
1.28 www 1873: }
1.48 www 1874: return '';
1.61 www 1875: }
1876:
1.71 www 1877: # ---------------------------------------------------------------- Get metadata
1878:
1879: sub metadata {
1880: my ($uri,$what)=@_;
1.78 www 1881:
1.71 www 1882: $uri=&declutter($uri);
1.73 www 1883: my $filename=$uri;
1884: $uri=~s/\.meta$//;
1.71 www 1885: unless ($metacache{$uri.':keys'}) {
1.140 www 1886: my %metathesekeys=();
1.73 www 1887: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
1888: my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
1.71 www 1889: my $parser=HTML::TokeParser->new(\$metastring);
1890: my $token;
1.140 www 1891: undef %metathesekeys;
1.71 www 1892: while ($token=$parser->get_token) {
1893: if ($token->[0] eq 'S') {
1.135 www 1894: if (defined($token->[2]->{'package'})) {
1.136 www 1895: my $package=$token->[2]->{'package'};
1896: my $keyroot='';
1897: if (defined($token->[2]->{'part'})) {
1898: $keyroot.='_'.$token->[2]->{'part'};
1899: }
1900: if (defined($token->[2]->{'id'})) {
1901: $keyroot.='_'.$token->[2]->{'id'};
1902: }
1903: if ($metacache{$uri.':packages'}) {
1904: $metacache{$uri.':packages'}.=','.$package.$keyroot;
1905: } else {
1906: $metacache{$uri.':packages'}=$package.$keyroot;
1907: }
1.137 www 1908: map {
1909: if ($_=~/^$package\&/) {
1910: my ($pack,$name,$subp)=split(/\&/,$_);
1.139 www 1911: my $value=$packagetab{$_};
1.144 www 1912: my $part=$keyroot;
1913: $part=~s/^\_//;
1.139 www 1914: if ($subp eq 'display') {
1915: $value.=' [Part: '.$part.']';
1916: }
1917: my $unikey='parameter'.$keyroot.'_'.$name;
1.140 www 1918: $metathesekeys{$unikey}=1;
1.144 www 1919: $metacache{$uri.':'.$unikey.'.part'}=$part;
1.141 www 1920: unless
1921: (defined($metacache{$uri.':'.$unikey.'.'.$subp})) {
1922: $metacache{$uri.':'.$unikey.'.'.$subp}=$value;
1923: }
1.137 www 1924: }
1925: } keys %packagetab;
1.135 www 1926: } else {
1.71 www 1927: my $entry=$token->[1];
1928: my $unikey=$entry;
1.72 www 1929: if (defined($token->[2]->{'part'})) {
1.71 www 1930: $unikey.='_'.$token->[2]->{'part'};
1.136 www 1931: }
1932: if (defined($token->[2]->{'id'})) {
1933: $unikey.='_'.$token->[2]->{'id'};
1.71 www 1934: }
1.72 www 1935: if (defined($token->[2]->{'name'})) {
1.71 www 1936: $unikey.='_'.$token->[2]->{'name'};
1937: }
1.140 www 1938: $metathesekeys{$unikey}=1;
1.71 www 1939: map {
1940: $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.72 www 1941: } @{$token->[3]};
1.78 www 1942: unless (
1943: $metacache{$uri.':'.$unikey}=$parser->get_text('/'.$entry)
1944: ) { $metacache{$uri.':'.$unikey}=
1945: $metacache{$uri.':'.$unikey.'.default'};
1946: }
1.135 www 1947: }
1.140 www 1948: }
1.71 www 1949: }
1.140 www 1950: $metacache{$uri.':keys'}=join(',',keys %metathesekeys);
1.71 www 1951: }
1952: return $metacache{$uri.':'.$what};
1953: }
1954:
1.31 www 1955: # ------------------------------------------------- Update symbolic store links
1956:
1957: sub symblist {
1958: my ($mapname,%newhash)=@_;
1959: $mapname=declutter($mapname);
1960: my %hash;
1961: if (($ENV{'request.course.fn'}) && (%newhash)) {
1962: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1963: &GDBM_WRCREAT,0640)) {
1964: map {
1965: $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
1966: } keys %newhash;
1967: if (untie(%hash)) {
1968: return 'ok';
1969: }
1970: }
1971: }
1972: return 'error';
1973: }
1974:
1975: # ------------------------------------------------------ Return symb list entry
1976:
1977: sub symbread {
1.44 www 1978: my $thisfn=shift;
1979: unless ($thisfn) {
1980: $thisfn=$ENV{'request.filename'};
1981: }
1982: $thisfn=declutter($thisfn);
1.31 www 1983: my %hash;
1.37 www 1984: my %bighash;
1985: my $syval='';
1.45 www 1986: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.31 www 1987: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1988: &GDBM_READER,0640)) {
1989: $syval=$hash{$thisfn};
1.37 www 1990: untie(%hash);
1991: }
1992: # ---------------------------------------------------------- There was an entry
1993: if ($syval) {
1994: unless ($syval=~/\_\d+$/) {
1995: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.44 www 1996: &appenv('request.ambiguous' => $thisfn);
1.37 www 1997: return '';
1998: }
1999: $syval.=$1;
2000: }
2001: } else {
2002: # ------------------------------------------------------- Was not in symb table
2003: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
2004: &GDBM_READER,0640)) {
2005: # ---------------------------------------------- Get ID(s) for current resource
2006: my $ids=$bighash{'ids_/res/'.$thisfn};
1.65 www 2007: unless ($ids) {
2008: $ids=$bighash{'ids_/'.$thisfn};
2009: }
1.37 www 2010: if ($ids) {
2011: # ------------------------------------------------------------------- Has ID(s)
2012: my @possibilities=split(/\,/,$ids);
1.39 www 2013: if ($#possibilities==0) {
2014: # ----------------------------------------------- There is only one possibility
1.37 www 2015: my ($mapid,$resid)=split(/\./,$ids);
2016: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
2017: } else {
1.39 www 2018: # ------------------------------------------ There is more than one possibility
2019: my $realpossible=0;
2020: map {
2021: my $file=$bighash{'src_'.$_};
2022: if (&allowed('bre',$file)) {
2023: my ($mapid,$resid)=split(/\./,$_);
2024: if ($bighash{'map_type_'.$mapid} ne 'page') {
2025: $realpossible++;
2026: $syval=declutter($bighash{'map_id_'.$mapid}).
2027: '___'.$resid;
2028: }
2029: }
2030: } @possibilities;
2031: if ($realpossible!=1) { $syval=''; }
1.37 www 2032: }
2033: }
2034: untie(%bighash)
2035: }
1.31 www 2036: }
1.62 www 2037: if ($syval) {
2038: return $syval.'___'.$thisfn;
2039: }
1.31 www 2040: }
1.44 www 2041: &appenv('request.ambiguous' => $thisfn);
1.31 www 2042: return '';
2043: }
2044:
2045: # ---------------------------------------------------------- Return random seed
2046:
1.32 www 2047: sub numval {
2048: my $txt=shift;
2049: $txt=~tr/A-J/0-9/;
2050: $txt=~tr/a-j/0-9/;
2051: $txt=~tr/K-T/0-9/;
2052: $txt=~tr/k-t/0-9/;
2053: $txt=~tr/U-Z/0-5/;
2054: $txt=~tr/u-z/0-5/;
2055: $txt=~s/\D//g;
2056: return int($txt);
2057: }
2058:
1.31 www 2059: sub rndseed {
2060: my $symb;
1.44 www 2061: unless ($symb=&symbread()) { return time; }
1.98 albertel 2062: {
2063: use integer;
2064: my $symbchck=unpack("%32C*",$symb) << 27;
1.100 albertel 2065: my $symbseed=numval($symb) << 22;
1.98 albertel 2066: my $namechck=unpack("%32C*",$ENV{'user.name'}) << 17;
1.100 albertel 2067: my $nameseed=numval($ENV{'user.name'}) << 12;
1.98 albertel 2068: my $domainseed=unpack("%32C*",$ENV{'user.domain'}) << 7;
2069: my $courseseed=unpack("%32C*",$ENV{'request.course.id'});
2070: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
1.99 albertel 2071: #uncommenting these lines can break things!
2072: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
2073: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.98 albertel 2074: return $num;
2075: }
1.36 albertel 2076: }
2077:
1.76 www 2078: sub ireceipt {
2079: my ($funame,$fudom,$fucourseid,$fusymb)=@_;
2080: my $cuname=unpack("%32C*",$funame);
2081: my $cudom=unpack("%32C*",$fudom);
2082: my $cucourseid=unpack("%32C*",$fucourseid);
2083: my $cusymb=unpack("%32C*",$fusymb);
1.77 www 2084: my $cunique=unpack("%32C*",$perlvar{'lonReceipt'});
1.76 www 2085: return unpack("%32C*",$perlvar{'lonHostID'}).'-'.
2086: ($cunique%$cuname+
2087: $cunique%$cudom+
2088: $cusymb%$cuname+
2089: $cusymb%$cudom+
2090: $cucourseid%$cuname+
2091: $cucourseid%$cudom);
2092: }
2093:
2094: sub receipt {
2095: return &ireceipt($ENV{'user.name'},$ENV{'user.domain'},
2096: $ENV{'request.course.id'},&symbread());
2097: }
2098:
1.36 albertel 2099: # ------------------------------------------------------------ Serves up a file
2100: # returns either the contents of the file or a -1
2101: sub getfile {
2102: my $file=shift;
1.37 www 2103: &repcopy($file);
1.36 albertel 2104: if (! -e $file ) { return -1; };
2105: my $fh=Apache::File->new($file);
2106: my $a='';
2107: while (<$fh>) { $a .=$_; }
2108: return $a
2109: }
2110:
2111: sub filelocation {
2112: my ($dir,$file) = @_;
2113: my $location;
2114: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1.59 albertel 2115: if ($file=~m:^/~:) { # is a contruction space reference
2116: $location = $file;
2117: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.36 albertel 2118: } else {
1.59 albertel 2119: $file=~s/^$perlvar{'lonDocRoot'}//;
2120: $file=~s:^/*res::;
2121: if ( !( $file =~ m:^/:) ) {
2122: $location = $dir. '/'.$file;
2123: } else {
2124: $location = '/home/httpd/html/res'.$file;
2125: }
1.36 albertel 2126: }
2127: $location=~s://+:/:g; # remove duplicate /
1.46 www 2128: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
2129: return $location;
2130: }
1.36 albertel 2131:
1.46 www 2132: sub hreflocation {
2133: my ($dir,$file)=@_;
2134: unless (($_=~/^http:\/\//i) || ($_=~/^\//)) {
2135: my $finalpath=filelocation($dir,$file);
2136: $finalpath=~s/^\/home\/httpd\/html//;
2137: return $finalpath;
2138: } else {
2139: return $file;
2140: }
1.31 www 2141: }
2142:
2143: # ------------------------------------------------------------- Declutters URLs
2144:
2145: sub declutter {
2146: my $thisfn=shift;
2147: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
2148: $thisfn=~s/^\///;
2149: $thisfn=~s/^res\///;
2150: return $thisfn;
1.12 www 2151: }
2152:
2153: # -------------------------------------------------------- Escape Special Chars
2154:
2155: sub escape {
2156: my $str=shift;
2157: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
2158: return $str;
2159: }
2160:
2161: # ----------------------------------------------------- Un-Escape Special Chars
2162:
2163: sub unescape {
2164: my $str=shift;
2165: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2166: return $str;
2167: }
1.11 www 2168:
1.1 albertel 2169: # ================================================================ Main Program
2170:
2171: sub BEGIN {
2172: if ($readit ne 'done') {
2173: # ------------------------------------------------------------ Read access.conf
2174: {
2175: my $config=Apache::File->new("/etc/httpd/conf/access.conf");
2176:
2177: while (my $configline=<$config>) {
2178: if ($configline =~ /PerlSetVar/) {
2179: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 2180: chomp($varvalue);
1.1 albertel 2181: $perlvar{$varname}=$varvalue;
2182: }
2183: }
2184: }
2185:
2186: # ------------------------------------------------------------- Read hosts file
2187: {
2188: my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
2189:
2190: while (my $configline=<$config>) {
2191: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
2192: $hostname{$id}=$name;
2193: $hostdom{$id}=$domain;
2194: if ($role eq 'library') { $libserv{$id}=$name; }
2195: }
2196: }
2197:
2198: # ------------------------------------------------------ Read spare server file
2199: {
2200: my $config=Apache::File->new("$perlvar{'lonTabDir'}/spare.tab");
2201:
2202: while (my $configline=<$config>) {
2203: chomp($configline);
2204: if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
2205: $spareid{$configline}=1;
2206: }
2207: }
2208: }
1.11 www 2209: # ------------------------------------------------------------ Read permissions
2210: {
2211: my $config=Apache::File->new("$perlvar{'lonTabDir'}/roles.tab");
2212:
2213: while (my $configline=<$config>) {
2214: chomp($configline);
2215: my ($role,$perm)=split(/ /,$configline);
2216: if ($perm ne '') { $pr{$role}=$perm; }
2217: }
2218: }
2219:
2220: # -------------------------------------------- Read plain texts for permissions
2221: {
2222: my $config=Apache::File->new("$perlvar{'lonTabDir'}/rolesplain.tab");
2223:
2224: while (my $configline=<$config>) {
2225: chomp($configline);
2226: my ($short,$plain)=split(/:/,$configline);
2227: if ($plain ne '') { $prp{$short}=$plain; }
1.135 www 2228: }
2229: }
2230:
2231: # ---------------------------------------------------------- Read package table
2232: {
2233: my $config=Apache::File->new("$perlvar{'lonTabDir'}/packages.tab");
2234:
2235: while (my $configline=<$config>) {
2236: chomp($configline);
2237: my ($short,$plain)=split(/:/,$configline);
1.143 www 2238: my ($pack,$name)=split(/\&/,$short);
2239: if ($plain ne '') {
2240: $packagetab{$pack.'&'.$name.'&name'}=$name;
2241: $packagetab{$short}=$plain;
2242: }
1.25 www 2243: }
2244: }
2245:
2246: # ------------------------------------------------------------- Read file types
2247: {
2248: my $config=Apache::File->new("$perlvar{'lonTabDir'}/filetypes.tab");
2249:
2250: while (my $configline=<$config>) {
2251: chomp($configline);
2252: my ($ending,$emb,@descr)=split(/\s+/,$configline);
2253: if ($descr[0] ne '') {
2254: $fe{$ending}=$emb;
2255: $fd{$ending}=join(' ',@descr);
2256: }
1.11 www 2257: }
2258: }
2259:
1.71 www 2260: %metacache=();
1.22 www 2261:
1.1 albertel 2262: $readit='done';
1.12 www 2263: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.1 albertel 2264: }
2265: }
2266: 1;
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