Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.49
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
1.12 www 27: # store(hash) : stores hash permanently for this url
1.47 www 28: # cstore(hash) : critical store
1.12 www 29: # restore : returns hash for this url
30: # eget(namesp,array) : returns hash with keys from array filled in from namesp
31: # get(namesp,array) : returns hash with keys from array filled in from namesp
1.38 www 32: # del(namesp,array) : deletes keys out of array from namesp
1.12 www 33: # put(namesp,hash) : stores hash in namesp
1.47 www 34: # cput(namesp,hash) : critical put
1.15 www 35: # dump(namesp) : dumps the complete namespace into a hash
1.23 www 36: # ssi(url,hash) : does a complete request cycle on url to localhost, posts
37: # hash
1.34 www 38: # coursedescription(id) : returns and caches course description for id
1.17 www 39: # repcopy(filename) : replicate file
40: # dirlist(url) : gets a directory listing
1.40 www 41: # directcondval(index) : reading condition value of single condition from
42: # state string
1.28 www 43: # condval(index) : value of condition index based on state
1.29 www 44: # varval(name) : value of a variable
1.31 www 45: # refreshstate() : refresh the state information string
46: # symblist(map,hash) : Updates symbolic storage links
1.44 www 47: # symbread([filename]) : returns the data handle (filename optional)
1.31 www 48: # rndseed() : returns a random seed
1.36 albertel 49: # getfile(filename) : returns the contents of filename, or a -1 if it can't
50: # be found, replicates and subscribes to the file
51: # filelocation(dir,file) : returns a farily clean absolute reference to file
52: # from the directory dir
1.46 www 53: # hreflocation(dir,file) : same as filelocation, but for hrefs
1.47 www 54: # log(domain,user,home,msg) : write to permanent log for user
1.12 www 55: #
1.1 albertel 56: # 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
1.5 www 57: # 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
1.8 www 58: # 11/8,11/16,11/18,11/22,11/23,12/22,
1.12 www 59: # 01/06,01/13,02/24,02/28,02/29,
60: # 03/01,03/02,03/06,03/07,03/13,
1.15 www 61: # 04/05,05/29,05/31,06/01,
62: # 06/05,06/26 Gerd Kortemeyer
63: # 06/26 Ben Tyszka
1.22 www 64: # 06/30,07/15,07/17,07/18,07/20,07/21,07/22,07/25 Gerd Kortemeyer
1.23 www 65: # 08/14 Ben Tyszka
1.36 albertel 66: # 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 67: # 10/04 Gerd Kortemeyer
1.36 albertel 68: # 10/04 Guy Albertelli
1.48 www 69: # 10/06,10/09,10/10,10/11,10/14,10/20,10/23,10/25 Gerd Kortemeyer
1.1 albertel 70:
71: package Apache::lonnet;
72:
73: use strict;
74: use Apache::File;
1.8 www 75: use LWP::UserAgent();
1.15 www 76: use HTTP::Headers;
1.11 www 77: use vars
1.25 www 78: qw(%perlvar %hostname %homecache %spareid %hostdom %libserv %pr %prp %fe %fd $readit);
1.1 albertel 79: use IO::Socket;
1.31 www 80: use GDBM_File;
1.8 www 81: use Apache::Constants qw(:common :http);
1.1 albertel 82:
83: # --------------------------------------------------------------------- Logging
84:
85: sub logthis {
86: my $message=shift;
87: my $execdir=$perlvar{'lonDaemons'};
88: my $now=time;
89: my $local=localtime($now);
90: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
91: print $fh "$local ($$): $message\n";
92: return 1;
93: }
94:
95: sub logperm {
96: my $message=shift;
97: my $execdir=$perlvar{'lonDaemons'};
98: my $now=time;
99: my $local=localtime($now);
100: my $fh=Apache::File->new(">>$execdir/logs/lonnet.perm.log");
101: print $fh "$now:$message:$local\n";
102: return 1;
103: }
104:
105: # -------------------------------------------------- Non-critical communication
106: sub subreply {
107: my ($cmd,$server)=@_;
108: my $peerfile="$perlvar{'lonSockDir'}/$server";
109: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
110: Type => SOCK_STREAM,
111: Timeout => 10)
112: or return "con_lost";
113: print $client "$cmd\n";
114: my $answer=<$client>;
1.9 www 115: if (!$answer) { $answer="con_lost"; }
1.1 albertel 116: chomp($answer);
117: return $answer;
118: }
119:
120: sub reply {
121: my ($cmd,$server)=@_;
122: my $answer=subreply($cmd,$server);
123: if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
1.12 www 124: if (($answer=~/^error:/) || ($answer=~/^refused/) ||
125: ($answer=~/^rejected/)) {
126: &logthis("<font color=blue>WARNING:".
127: " $cmd to $server returned $answer</font>");
128: }
1.1 albertel 129: return $answer;
130: }
131:
132: # ----------------------------------------------------------- Send USR1 to lonc
133:
134: sub reconlonc {
135: my $peerfile=shift;
136: &logthis("Trying to reconnect for $peerfile");
137: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
138: if (my $fh=Apache::File->new("$loncfile")) {
139: my $loncpid=<$fh>;
140: chomp($loncpid);
141: if (kill 0 => $loncpid) {
142: &logthis("lonc at pid $loncpid responding, sending USR1");
143: kill USR1 => $loncpid;
144: sleep 1;
145: if (-e "$peerfile") { return; }
146: &logthis("$peerfile still not there, give it another try");
147: sleep 5;
148: if (-e "$peerfile") { return; }
1.12 www 149: &logthis(
150: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 151: } else {
1.12 www 152: &logthis(
153: "<font color=blue>WARNING:".
154: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 155: }
156: } else {
1.12 www 157: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 158: }
159: }
160:
161: # ------------------------------------------------------ Critical communication
1.12 www 162:
1.1 albertel 163: sub critical {
164: my ($cmd,$server)=@_;
165: my $answer=reply($cmd,$server);
166: if ($answer eq 'con_lost') {
167: my $pingreply=reply('ping',$server);
168: &reconlonc("$perlvar{'lonSockDir'}/$server");
169: my $pongreply=reply('pong',$server);
170: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
171: $answer=reply($cmd,$server);
172: if ($answer eq 'con_lost') {
173: my $now=time;
174: my $middlename=$cmd;
1.5 www 175: $middlename=substr($middlename,0,16);
1.1 albertel 176: $middlename=~s/\W//g;
177: my $dfilename=
178: "$perlvar{'lonSockDir'}/delayed/$now.$middlename.$server";
179: {
180: my $dfh;
181: if ($dfh=Apache::File->new(">$dfilename")) {
1.7 www 182: print $dfh "$cmd\n";
1.1 albertel 183: }
184: }
185: sleep 2;
186: my $wcmd='';
187: {
188: my $dfh;
189: if ($dfh=Apache::File->new("$dfilename")) {
190: $wcmd=<$dfh>;
191: }
192: }
193: chomp($wcmd);
1.7 www 194: if ($wcmd eq $cmd) {
1.12 www 195: &logthis("<font color=blue>WARNING: ".
196: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 197: &logperm("D:$server:$cmd");
198: return 'con_delayed';
199: } else {
1.12 www 200: &logthis("<font color=red>CRITICAL:"
201: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 202: &logperm("F:$server:$cmd");
203: return 'con_failed';
204: }
205: }
206: }
207: return $answer;
208: }
209:
1.5 www 210: # ---------------------------------------------------------- Append Environment
211:
212: sub appenv {
1.6 www 213: my %newenv=@_;
1.35 www 214: map {
215: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
216: &logthis("<font color=blue>WARNING: ".
217: "Attempt to modify environment ".$_." to ".$newenv{$_});
218: delete($newenv{$_});
219: } else {
220: $ENV{$_}=$newenv{$_};
221: }
222: } keys %newenv;
1.6 www 223: my @oldenv;
224: {
225: my $fh;
226: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
1.5 www 227: return 'error';
1.6 www 228: }
229: @oldenv=<$fh>;
230: }
231: for (my $i=0; $i<=$#oldenv; $i++) {
232: chomp($oldenv[$i]);
1.9 www 233: if ($oldenv[$i] ne '') {
234: my ($name,$value)=split(/=/,$oldenv[$i]);
1.24 www 235: unless (defined($newenv{$name})) {
236: $newenv{$name}=$value;
237: }
1.9 www 238: }
1.6 www 239: }
240: {
241: my $fh;
242: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
243: return 'error';
244: }
245: my $newname;
246: foreach $newname (keys %newenv) {
247: print $fh "$newname=$newenv{$newname}\n";
248: }
1.5 www 249: }
250: return 'ok';
251: }
1.1 albertel 252:
253: # ------------------------------ Find server with least workload from spare.tab
1.11 www 254:
1.1 albertel 255: sub spareserver {
256: my $tryserver;
257: my $spareserver='';
258: my $lowestserver=100;
259: foreach $tryserver (keys %spareid) {
260: my $answer=reply('load',$tryserver);
261: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
262: $spareserver="http://$hostname{$tryserver}";
263: $lowestserver=$answer;
264: }
265: }
266: return $spareserver;
267: }
268:
269: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 270:
1.1 albertel 271: sub authenticate {
272: my ($uname,$upass,$udom)=@_;
1.12 www 273: $upass=escape($upass);
1.1 albertel 274: if (($perlvar{'lonRole'} eq 'library') &&
275: ($udom eq $perlvar{'lonDefDomain'})) {
1.3 www 276: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$perlvar{'lonHostID'});
1.2 www 277: if ($answer =~ /authorized/) {
1.9 www 278: if ($answer eq 'authorized') {
279: &logthis("User $uname at $udom authorized by local server");
280: return $perlvar{'lonHostID'};
281: }
282: if ($answer eq 'non_authorized') {
283: &logthis("User $uname at $udom rejected by local server");
284: return 'no_host';
285: }
1.2 www 286: }
1.1 albertel 287: }
288:
289: my $tryserver;
290: foreach $tryserver (keys %libserv) {
291: if ($hostdom{$tryserver} eq $udom) {
1.10 www 292: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$tryserver);
1.1 albertel 293: if ($answer =~ /authorized/) {
1.9 www 294: if ($answer eq 'authorized') {
295: &logthis("User $uname at $udom authorized by $tryserver");
296: return $tryserver;
297: }
298: if ($answer eq 'non_authorized') {
299: &logthis("User $uname at $udom rejected by $tryserver");
300: return 'no_host';
301: }
1.1 albertel 302: }
303: }
1.9 www 304: }
305: &logthis("User $uname at $udom could not be authenticated");
1.1 albertel 306: return 'no_host';
307: }
308:
309: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 310:
1.1 albertel 311: sub homeserver {
312: my ($uname,$udom)=@_;
313:
314: my $index="$uname:$udom";
315: if ($homecache{$index}) { return "$homecache{$index}"; }
316:
317: my $tryserver;
318: foreach $tryserver (keys %libserv) {
319: if ($hostdom{$tryserver} eq $udom) {
320: my $answer=reply("home:$udom:$uname",$tryserver);
321: if ($answer eq 'found') {
322: $homecache{$index}=$tryserver;
323: return $tryserver;
324: }
325: }
326: }
327: return 'no_host';
328: }
329:
330: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 331:
1.1 albertel 332: sub subscribe {
333: my $fname=shift;
334: my $author=$fname;
335: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
336: my ($udom,$uname)=split(/\//,$author);
337: my $home=homeserver($uname,$udom);
338: if (($home eq 'no_host') || ($home eq $perlvar{'lonHostID'})) {
339: return 'not_found';
340: }
341: my $answer=reply("sub:$fname",$home);
342: return $answer;
343: }
344:
1.8 www 345: # -------------------------------------------------------------- Replicate file
346:
347: sub repcopy {
348: my $filename=shift;
1.23 www 349: $filename=~s/\/+/\//g;
1.8 www 350: my $transname="$filename.in.transfer";
1.17 www 351: if ((-e $filename) || (-e $transname)) { return OK; }
1.8 www 352: my $remoteurl=subscribe($filename);
353: if ($remoteurl eq 'con_lost') {
354: &logthis("Subscribe returned con_lost: $filename");
355: return HTTP_SERVICE_UNAVAILABLE;
356: } elsif ($remoteurl eq 'not_found') {
357: &logthis("Subscribe returned not_found: $filename");
358: return HTTP_NOT_FOUND;
1.20 www 359: } elsif ($remoteurl eq 'rejected') {
360: &logthis("Subscribe returned rejected: $filename");
1.8 www 361: return FORBIDDEN;
1.20 www 362: } elsif ($remoteurl eq 'directory') {
363: return OK;
1.8 www 364: } else {
365: my @parts=split(/\//,$filename);
366: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
367: if ($path ne "$perlvar{'lonDocRoot'}/res") {
368: &logthis("Malconfiguration for replication: $filename");
369: return HTTP_BAD_REQUEST;
370: }
371: my $count;
372: for ($count=5;$count<$#parts;$count++) {
373: $path.="/$parts[$count]";
374: if ((-e $path)!=1) {
375: mkdir($path,0777);
376: }
377: }
378: my $ua=new LWP::UserAgent;
379: my $request=new HTTP::Request('GET',"$remoteurl");
380: my $response=$ua->request($request,$transname);
381: if ($response->is_error()) {
382: unlink($transname);
383: my $message=$response->status_line;
1.12 www 384: &logthis("<font color=blue>WARNING:"
385: ." LWP get: $message: $filename</font>");
1.8 www 386: return HTTP_SERVICE_UNAVAILABLE;
387: } else {
1.16 www 388: if ($remoteurl!~/\.meta$/) {
389: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
390: my $mresponse=$ua->request($mrequest,$filename.'.meta');
391: if ($mresponse->is_error()) {
392: unlink($filename.'.meta');
393: &logthis(
394: "<font color=yellow>INFO: No metadata: $filename</font>");
395: }
396: }
1.8 www 397: rename($transname,$filename);
398: return OK;
399: }
400: }
401: }
402:
1.15 www 403: # --------------------------------------------------------- Server Side Include
404:
405: sub ssi {
406:
1.23 www 407: my ($fn,%form)=@_;
1.15 www 408:
409: my $ua=new LWP::UserAgent;
1.23 www 410:
411: my $request;
412:
413: if (%form) {
414: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
415: $request->content(join '&', map { "$_=$form{$_}" } keys %form);
416: } else {
417: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
418: }
419:
1.15 www 420: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
421: my $response=$ua->request($request);
422:
423: return $response->content;
424: }
425:
1.14 www 426: # ------------------------------------------------------------------------- Log
427:
428: sub log {
429: my ($dom,$nam,$hom,$what)=@_;
1.47 www 430: return critical("log:$dom:$nam:$what",$hom);
1.14 www 431: }
432:
1.9 www 433: # ----------------------------------------------------------------------- Store
434:
435: sub store {
1.31 www 436: my %storehash=@_;
437: my $symb;
1.44 www 438: unless ($symb=escape(&symbread())) { return ''; }
1.31 www 439: my $namespace;
1.33 www 440: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
1.12 www 441: my $namevalue='';
442: map {
443: $namevalue.=escape($_).'='.escape($storehash{$_}).'&';
444: } keys %storehash;
445: $namevalue=~s/\&$//;
1.31 www 446: return reply(
447: "store:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb:$namevalue",
1.12 www 448: "$ENV{'user.home'}");
1.9 www 449: }
450:
1.47 www 451: # -------------------------------------------------------------- Critical Store
452:
453: sub cstore {
454: my %storehash=@_;
455: my $symb;
456: unless ($symb=escape(&symbread())) { return ''; }
457: my $namespace;
458: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
459: my $namevalue='';
460: map {
461: $namevalue.=escape($_).'='.escape($storehash{$_}).'&';
462: } keys %storehash;
463: $namevalue=~s/\&$//;
464: return critical(
465: "store:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb:$namevalue",
466: "$ENV{'user.home'}");
467: }
468:
1.9 www 469: # --------------------------------------------------------------------- Restore
470:
471: sub restore {
1.31 www 472: my $symb;
1.44 www 473: unless ($symb=escape(&symbread())) { return ''; }
1.31 www 474: my $namespace;
1.33 www 475: unless ($namespace=$ENV{'request.course.id'}) { return ''; }
1.31 www 476: my $answer=reply(
477: "restore:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$symb",
478: "$ENV{'user.home'}");
1.12 www 479: my %returnhash=();
480: map {
481: my ($name,$value)=split(/\=/,$_);
482: $returnhash{&unescape($name)}=&unescape($value);
483: } split(/\&/,$answer);
1.31 www 484: map {
485: $returnhash{$_}=$returnhash{$returnhash{'version'}.':'.$_};
486: } split(/\:/,$returnhash{$returnhash{'version'}.':keys'});
1.13 www 487: return %returnhash;
1.34 www 488: }
489:
490: # ---------------------------------------------------------- Course Description
491:
492: sub coursedescription {
493: my $courseid=shift;
494: $courseid=~s/^\///;
1.49 ! www 495: $courseid=~s/\_/\//g;
1.34 www 496: my ($cdomain,$cnum)=split(/\//,$courseid);
497: my $chome=homeserver($cnum,$cdomain);
498: if ($chome ne 'no_host') {
499: my $rep=reply("dump:$cdomain:$cnum:environment",$chome);
500: if ($rep ne 'con_lost') {
501: my %cachehash=();
502: my %returnhash=('home' => $chome,
503: 'domain' => $cdomain,
504: 'num' => $cnum);
505: map {
506: my ($name,$value)=split(/\=/,$_);
507: $name=&unescape($name);
508: $value=&unescape($value);
509: $returnhash{$name}=$value;
510: if ($name eq 'description') {
511: $cachehash{$courseid}=$value;
512: }
513: } split(/\&/,$rep);
514: $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
515: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 516: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.34 www 517: put ('coursedescriptions',%cachehash);
518: return %returnhash;
519: }
520: }
521: return ();
1.9 www 522: }
1.1 albertel 523:
1.11 www 524: # -------------------------------------------------------- Get user priviledges
525:
526: sub rolesinit {
527: my ($domain,$username,$authhost)=@_;
528: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 529: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 530: my %allroles=();
531: my %thesepriv=();
532: my $now=time;
1.21 www 533: my $userroles="user.login.time=$now\n";
1.11 www 534: my $thesestr;
535:
536: if ($rolesdump ne '') {
537: map {
1.21 www 538: if ($_!~/^rolesdef\&/) {
1.11 www 539: my ($area,$role)=split(/=/,$_);
1.21 www 540: $area=~s/\_\w\w$//;
1.11 www 541: my ($trole,$tend,$tstart)=split(/_/,$role);
1.21 www 542: $userroles.='user.role.'.$trole.'.'.$area.'='.
543: $tstart.'.'.$tend."\n";
1.11 www 544: if ($tend!=0) {
545: if ($tend<$now) {
546: $trole='';
547: }
548: }
549: if ($tstart!=0) {
550: if ($tstart>$now) {
551: $trole='';
552: }
553: }
554: if (($area ne '') && ($trole ne '')) {
1.12 www 555: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
556: if ($trole =~ /^cr\//) {
557: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
558: my $homsvr=homeserver($rauthor,$rdomain);
559: if ($hostname{$homsvr} ne '') {
560: my $roledef=
1.21 www 561: reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
1.12 www 562: $homsvr);
563: if (($roledef ne 'con_lost') && ($roledef ne '')) {
564: my ($syspriv,$dompriv,$coursepriv)=
1.21 www 565: split(/\_/,unescape($roledef));
1.12 www 566: $allroles{'/'}.=':'.$syspriv;
567: if ($tdomain ne '') {
568: $allroles{'/'.$tdomain.'/'}.=':'.$dompriv;
569: if ($trest ne '') {
570: $allroles{$area}.=':'.$coursepriv;
571: }
572: }
573: }
1.11 www 574: }
1.12 www 575: } else {
576: $allroles{'/'}.=':'.$pr{$trole.':s'};
577: if ($tdomain ne '') {
578: $allroles{'/'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
579: if ($trest ne '') {
580: $allroles{$area}.=':'.$pr{$trole.':c'};
581: }
582: }
1.11 www 583: }
1.12 www 584: }
585: }
1.11 www 586: } split(/&/,$rolesdump);
587: map {
588: %thesepriv=();
589: map {
590: if ($_ ne '') {
591: my ($priviledge,$restrictions)=split(/&/,$_);
592: if ($restrictions eq '') {
593: $thesepriv{$priviledge}='F';
594: } else {
595: if ($thesepriv{$priviledge} ne 'F') {
596: $thesepriv{$priviledge}.=$restrictions;
597: }
598: }
599: }
600: } split(/:/,$allroles{$_});
601: $thesestr='';
602: map { $thesestr.=':'.$_.'&'.$thesepriv{$_}; } keys %thesepriv;
603: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
604: } keys %allroles;
605: }
606: return $userroles;
607: }
608:
1.12 www 609: # --------------------------------------------------------------- get interface
610:
611: sub get {
612: my ($namespace,@storearr)=@_;
613: my $items='';
614: map {
615: $items.=escape($_).'&';
616: } @storearr;
617: $items=~s/\&$//;
618: my $rep=reply("get:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
619: $ENV{'user.home'});
1.15 www 620: my @pairs=split(/\&/,$rep);
621: my %returnhash=();
1.42 www 622: my $i=0;
1.15 www 623: map {
1.42 www 624: $returnhash{$_}=unescape($pairs[$i]);
625: $i++;
626: } @storearr;
1.15 www 627: return %returnhash;
1.27 www 628: }
629:
630: # --------------------------------------------------------------- del interface
631:
632: sub del {
633: my ($namespace,@storearr)=@_;
634: my $items='';
635: map {
636: $items.=escape($_).'&';
637: } @storearr;
638: $items=~s/\&$//;
639: return reply("del:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
640: $ENV{'user.home'});
1.15 www 641: }
642:
643: # -------------------------------------------------------------- dump interface
644:
645: sub dump {
646: my $namespace=shift;
647: my $rep=reply("dump:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace",
648: $ENV{'user.home'});
1.12 www 649: my @pairs=split(/\&/,$rep);
650: my %returnhash=();
651: map {
652: my ($key,$value)=split(/=/,$_);
1.29 www 653: $returnhash{unescape($key)}=unescape($value);
1.12 www 654: } @pairs;
655: return %returnhash;
656: }
657:
658: # --------------------------------------------------------------- put interface
659:
660: sub put {
661: my ($namespace,%storehash)=@_;
662: my $items='';
663: map {
664: $items.=escape($_).'='.escape($storehash{$_}).'&';
665: } keys %storehash;
666: $items=~s/\&$//;
667: return reply("put:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
1.47 www 668: $ENV{'user.home'});
669: }
670:
671: # ------------------------------------------------------ critical put interface
672:
673: sub cput {
674: my ($namespace,%storehash)=@_;
675: my $items='';
676: map {
677: $items.=escape($_).'='.escape($storehash{$_}).'&';
678: } keys %storehash;
679: $items=~s/\&$//;
680: return critical
681: ("put:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
1.12 www 682: $ENV{'user.home'});
683: }
684:
685: # -------------------------------------------------------------- eget interface
686:
687: sub eget {
688: my ($namespace,@storearr)=@_;
689: my $items='';
690: map {
691: $items.=escape($_).'&';
692: } @storearr;
693: $items=~s/\&$//;
694: my $rep=reply("eget:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
695: $ENV{'user.home'});
696: my @pairs=split(/\&/,$rep);
697: my %returnhash=();
1.42 www 698: my $i=0;
1.12 www 699: map {
1.42 www 700: $returnhash{$_}=unescape($pairs[$i]);
701: $i++;
702: } @storearr;
1.12 www 703: return %returnhash;
704: }
705:
706: # ------------------------------------------------- Check for a user priviledge
707:
708: sub allowed {
709: my ($priv,$uri)=@_;
710: $uri=~s/^\/res//;
711: $uri=~s/^\///;
1.29 www 712:
713: # Free bre access to adm resources
714:
715: if (($uri=~/^adm\//) && ($priv eq 'bre')) {
1.14 www 716: return 'F';
717: }
1.29 www 718:
719: # Gather priviledges over system and domain
720:
1.12 www 721: my $thisallowed='';
722: if ($ENV{'user.priv./'}=~/$priv\&([^\:]*)/) {
723: $thisallowed.=$1;
724: }
725: if ($ENV{'user.priv./'.(split(/\//,$uri))[0].'/'}=~/$priv\&([^\:]*)/) {
726: $thisallowed.=$1;
727: }
1.29 www 728:
729: # Full access at system or domain level? Exit.
730:
731: if ($thisallowed=~/F/) {
732: return 'F';
733: }
734:
1.30 www 735: # The user does not have full access at system or domain level
1.29 www 736: # Course level access control
737:
738: # uri itself refering to a course?
739:
740: if ($uri=~/\.course$/) {
741: if ($ENV{'user.priv./'.$uri}=~/$priv\&([^\:]*)/) {
742: $thisallowed.=$1;
743: }
1.30 www 744: # Full access on course level? Exit.
1.29 www 745: if ($thisallowed=~/F/) {
746: return 'F';
747: }
748:
749: # uri is refering to an individual resource; user needs to be in a course
750:
751: } else {
752:
1.33 www 753: unless(defined($ENV{'request.course.id'})) {
1.29 www 754: return '1';
755: }
756:
757: # Get access priviledges for course
758:
1.33 www 759: if ($ENV{'user.priv./'.$ENV{'request.course.id'}}=~/$priv\&([^\:]*)/) {
1.29 www 760: $thisallowed.=$1;
761: }
762:
763: # See if resource or referer is part of this course
764:
765: my @uriparts=split(/\//,$uri);
766: my $urifile=$uriparts[$#uriparts];
767: $urifile=~/\.(\w+)$/;
768: my $uritype=$1;
769: $#uriparts--;
770: my $uripath=join('/',@uriparts);
771: my $uricond=-1;
1.33 www 772: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$uripath}=~
1.29 www 773: /\&$urifile\:(\d+)\&/) {
774: $uricond=$1;
775: } elsif (($fe{$uritype} eq 'emb') || ($fe{$uritype} eq 'img')) {
1.30 www 776: my $refuri=$ENV{'HTTP_REFERER'};
777: $refuri=~s/^\/res//;
778: $refuri=~s/^\///;
779: @uriparts=split(/\//,$refuri);
780: $urifile=$uriparts[$#uriparts];
781: $#uriparts--;
782: $uripath=join('/',@uriparts);
1.33 www 783: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$uripath}=~
1.30 www 784: /\&$urifile\:(\d+)\&/) {
785: $uricond=$1;
786: }
787: }
788:
789: if ($uricond>=0) {
1.29 www 790:
1.30 www 791: # The resource is part of the course
792: # If user had full access on course level, go ahead
793:
794: if ($thisallowed=~/F/) {
795: return 'F';
796: }
797:
798: # Restricted by state?
799:
800: if ($thisallowed=~/X/) {
1.41 www 801: if (&condval($uricond)) {
1.30 www 802: return '2';
803: } else {
804: return '';
805: }
806: }
1.29 www 807: }
1.12 www 808: }
809: return $thisallowed;
810: }
811:
1.29 www 812: # ---------------------------------------------------------- Refresh State Info
813:
814: sub refreshstate {
815: }
816:
1.12 www 817: # ----------------------------------------------------------------- Define Role
818:
819: sub definerole {
820: if (allowed('mcr','/')) {
821: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.21 www 822: map {
823: my ($crole,$cqual)=split(/\&/,$_);
824: if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
825: if ($pr{'cr:s'}=~/$crole\&/) {
826: if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
827: return "refused:s:$crole&$cqual";
828: }
829: }
830: } split('/',$sysrole);
831: map {
832: my ($crole,$cqual)=split(/\&/,$_);
833: if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
834: if ($pr{'cr:d'}=~/$crole\&/) {
835: if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
836: return "refused:d:$crole&$cqual";
837: }
838: }
839: } split('/',$domrole);
840: map {
841: my ($crole,$cqual)=split(/\&/,$_);
842: if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
843: if ($pr{'cr:c'}=~/$crole\&/) {
844: if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
845: return "refused:c:$crole&$cqual";
846: }
847: }
848: } split('/',$courole);
1.12 www 849: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
850: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 851: "rolesdef_$rolename=".
852: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 853: return reply($command,$ENV{'user.home'});
854: } else {
855: return 'refused';
856: }
857: }
858:
859: # ------------------------------------------------------------------ Plain Text
860:
861: sub plaintext {
1.22 www 862: my $short=shift;
863: return $prp{$short};
1.12 www 864: }
865:
1.25 www 866: # ------------------------------------------------------------------ Plain Text
867:
868: sub fileembstyle {
869: my $ending=shift;
870: return $fe{$ending};
871: }
872:
873: # ------------------------------------------------------------ Description Text
874:
875: sub filedecription {
876: my $ending=shift;
877: return $fd{$ending};
878: }
879:
1.12 www 880: # ----------------------------------------------------------------- Assign Role
881:
882: sub assignrole {
1.21 www 883: my ($udom,$uname,$url,$role,$end,$start)=@_;
884: my $mrole;
1.31 www 885: $url=declutter($url);
1.21 www 886: if ($role =~ /^cr\//) {
887: unless ($url=~/\.course$/) { return 'invalid'; }
888: unless (allowed('ccr',$url)) { return 'refused'; }
889: $mrole='cr';
890: } else {
891: unless (($url=~/\.course$/) || ($url=~/\/$/)) { return 'invalid'; }
892: unless (allowed('c'+$role)) { return 'refused'; }
893: $mrole=$role;
894: }
895: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
896: "$udom:$uname:$url".'_'."$mrole=$role";
897: if ($end) { $command.='_$end'; }
898: if ($start) {
899: if ($end) {
900: $command.='_$start';
901: } else {
902: $command.='_0_$start';
903: }
904: }
905: return &reply($command,&homeserver($uname,$udom));
906: }
907:
908: # ---------------------------------------------------------- Assign Custom Role
909:
910: sub assigncustomrole {
911: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
912: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
913: $end,$start);
914: }
915:
916: # ----------------------------------------------------------------- Revoke Role
917:
918: sub revokerole {
919: my ($udom,$uname,$url,$role)=@_;
920: my $now=time;
921: return &assignrole($udom,$uname,$url,$role,$now);
922: }
923:
924: # ---------------------------------------------------------- Revoke Custom Role
925:
926: sub revokecustomrole {
927: my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
928: my $now=time;
929: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
1.17 www 930: }
931:
932: # ------------------------------------------------------------ Directory lister
933:
934: sub dirlist {
935: my $uri=shift;
1.18 www 936: $uri=~s/^\///;
937: $uri=~s/\/$//;
1.19 www 938: my ($res,$udom,$uname,@rest)=split(/\//,$uri);
939: if ($udom) {
940: if ($uname) {
941: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
942: homeserver($uname,$udom));
943: return split(/:/,$listing);
944: } else {
945: my $tryserver;
946: my %allusers=();
947: foreach $tryserver (keys %libserv) {
948: if ($hostdom{$tryserver} eq $udom) {
949: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
950: $tryserver);
951: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
952: && ($listing ne 'con_lost')) {
953: map {
954: my ($entry,@stat)=split(/&/,$_);
955: $allusers{$entry}=1;
956: } split(/:/,$listing);
957: }
958: }
959: }
960: my $alluserstr='';
961: map {
962: $alluserstr.=$_.'&user:';
963: } sort keys %allusers;
964: $alluserstr=~s/:$//;
965: return split(/:/,$alluserstr);
966: }
967: } else {
968: my $tryserver;
969: my %alldom=();
970: foreach $tryserver (keys %libserv) {
971: $alldom{$hostdom{$tryserver}}=1;
972: }
973: my $alldomstr='';
974: map {
975: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
976: } sort keys %alldom;
977: $alldomstr=~s/:$//;
978: return split(/:/,$alldomstr);
979: }
1.26 www 980: }
981:
982: # -------------------------------------------------------- Value of a Condition
983:
1.40 www 984: sub directcondval {
985: my $number=shift;
986: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
987: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
988: } else {
989: return 2;
990: }
991: }
992:
1.26 www 993: sub condval {
994: my $condidx=shift;
995: my $result=0;
1.33 www 996: if ($ENV{'request.course.id'}) {
997: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$condidx})) {
1.26 www 998: my $operand='|';
999: my @stack;
1000: map {
1001: if ($_ eq '(') {
1002: push @stack,($operand,$result)
1003: } elsif ($_ eq ')') {
1004: my $before=pop @stack;
1005: if (pop @stack eq '&') {
1006: $result=$result>$before?$before:$result;
1007: } else {
1008: $result=$result>$before?$result:$before;
1009: }
1010: } elsif (($_ eq '&') || ($_ eq '|')) {
1011: $operand=$_;
1012: } else {
1.40 www 1013: my $new=directcondval($_);
1.26 www 1014: if ($operand eq '&') {
1015: $result=$result>$new?$new:$result;
1016: } else {
1017: $result=$result>$new?$result:$new;
1018: }
1019: }
1.33 www 1020: } ($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$condidx}=~
1.26 www 1021: /(\d+|\(|\)|\&|\|)/g);
1022: }
1023: }
1024: return $result;
1.28 www 1025: }
1026:
1027: # --------------------------------------------------------- Value of a Variable
1028:
1029: sub varval {
1.48 www 1030: my $varname=shift;
1031: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
1032: my $rest;
1033: if ($therest[0]) {
1034: $rest=join('.',@therest);
1035: } else {
1036: $rest='';
1037: }
1.28 www 1038: if ($realm eq 'user') {
1.48 www 1039: # --------------------------------------------------------------- user.resource
1040: if ($space eq 'resource') {
1041: # ----------------------------------------------------------------- user.access
1042: } elsif ($space eq 'access') {
1043: return &allowed($qualifier,$rest);
1044: # ------------------------------------------ user.preferences, user.environment
1045: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1046: return $ENV{join('.',('environment',$qualifier,$rest))};
1047: # ----------------------------------------------------------------- user.course
1048: } elsif ($space eq 'course') {
1049: return $ENV{join('.',('request.course',$qualifier))};
1050: # ------------------------------------------------------------------- user.role
1051: } elsif ($space eq 'role') {
1052: my ($role,$where)=split(/\./,$ENV{'request.role'});
1053: if ($qualifier eq 'value') {
1054: return $role;
1055: } elsif ($qualifier eq 'extent') {
1056: return $where;
1057: }
1058: # ----------------------------------------------------------------- user.domain
1059: } elsif ($space eq 'domain') {
1060: return $ENV{'user.domain'};
1061: # ------------------------------------------------------------------- user.name
1062: } elsif ($space eq 'name') {
1063: return $ENV{'user.name'};
1064: # ---------------------------------------------------- Any other user namespace
1.29 www 1065: } else {
1.48 www 1066: my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
1067: my %reply=&get($space,$item);
1068: return $reply{$item};
1069: }
1070: } elsif ($realm eq 'request') {
1071: # ------------------------------------------------------------- request.browser
1072: if ($space eq 'browser') {
1073: return $ENV{'browser.'.$qualifier};
1074: } elsif ($space eq 'filename') {
1075: return $ENV{'request.filename'};
1.29 www 1076: }
1.28 www 1077: } elsif ($realm eq 'course') {
1.48 www 1078: # ---------------------------------------------------------- course.description
1079: if ($space eq 'description') {
1.49 ! www 1080: my %reply=&coursedescription($ENV{'request.course.id'});
! 1081: return $reply{'description'};
1.48 www 1082: # ------------------------------------------------------------------- course.id
1083: } elsif ($space eq 'id') {
1084: return $ENV{'request.course.id'};
1085: # -------------------------------------------------- Any other course namespace
1086: } else {
1087: my ($cdom,$cnam)=split(/\_/,$ENV{'request.course.id'});
1088: my $chome=&homeserver($cnam,$cdom);
1089: my $item=join('.',($qualifier,$rest));
1090: return &unescape
1091: (&reply('get:'.$cdom.':'.$cnam.':'.&escape($space).':'.
1092: &escape($item),$chome));
1093: }
1094: } elsif ($realm eq 'userdata') {
1095: my $uhome=&homeserver($qualifier,$space);
1096: # ----------------------------------------------- userdata.domain.name.resource
1097: # ---------------------------------------------------- Any other user namespace
1098: } elsif ($realm eq 'environment') {
1099: # ----------------------------------------------------------------- environment
1100: return $ENV{join('.',($space,$qualifier,$rest))};
1.28 www 1101: } elsif ($realm eq 'system') {
1.48 www 1102: # ----------------------------------------------------------------- system.time
1103: if ($space eq 'time') {
1104: return time;
1105: }
1.28 www 1106: }
1.48 www 1107: return '';
1.31 www 1108: }
1109:
1110: # ------------------------------------------------- Update symbolic store links
1111:
1112: sub symblist {
1113: my ($mapname,%newhash)=@_;
1114: $mapname=declutter($mapname);
1115: my %hash;
1116: if (($ENV{'request.course.fn'}) && (%newhash)) {
1117: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1118: &GDBM_WRCREAT,0640)) {
1119: map {
1120: $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
1121: } keys %newhash;
1122: if (untie(%hash)) {
1123: return 'ok';
1124: }
1125: }
1126: }
1127: return 'error';
1128: }
1129:
1130: # ------------------------------------------------------ Return symb list entry
1131:
1132: sub symbread {
1.44 www 1133: my $thisfn=shift;
1134: unless ($thisfn) {
1135: $thisfn=$ENV{'request.filename'};
1136: }
1137: $thisfn=declutter($thisfn);
1.31 www 1138: my %hash;
1.37 www 1139: my %bighash;
1140: my $syval='';
1.45 www 1141: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.31 www 1142: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
1143: &GDBM_READER,0640)) {
1144: $syval=$hash{$thisfn};
1.37 www 1145: untie(%hash);
1146: }
1147: # ---------------------------------------------------------- There was an entry
1148: if ($syval) {
1149: unless ($syval=~/\_\d+$/) {
1150: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.44 www 1151: &appenv('request.ambiguous' => $thisfn);
1.37 www 1152: return '';
1153: }
1154: $syval.=$1;
1155: }
1156: } else {
1157: # ------------------------------------------------------- Was not in symb table
1158: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1159: &GDBM_READER,0640)) {
1160: # ---------------------------------------------- Get ID(s) for current resource
1161: my $ids=$bighash{'ids_/res/'.$thisfn};
1162: if ($ids) {
1163: # ------------------------------------------------------------------- Has ID(s)
1164: my @possibilities=split(/\,/,$ids);
1.39 www 1165: if ($#possibilities==0) {
1166: # ----------------------------------------------- There is only one possibility
1.37 www 1167: my ($mapid,$resid)=split(/\./,$ids);
1168: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
1169: } else {
1.39 www 1170: # ------------------------------------------ There is more than one possibility
1171: my $realpossible=0;
1172: map {
1173: my $file=$bighash{'src_'.$_};
1174: if (&allowed('bre',$file)) {
1175: my ($mapid,$resid)=split(/\./,$_);
1176: if ($bighash{'map_type_'.$mapid} ne 'page') {
1177: $realpossible++;
1178: $syval=declutter($bighash{'map_id_'.$mapid}).
1179: '___'.$resid;
1180: }
1181: }
1182: } @possibilities;
1183: if ($realpossible!=1) { $syval=''; }
1.37 www 1184: }
1185: }
1186: untie(%bighash)
1187: }
1.31 www 1188: }
1.38 www 1189: if ($syval) { return $syval.'___'.$thisfn; }
1.31 www 1190: }
1.44 www 1191: &appenv('request.ambiguous' => $thisfn);
1.31 www 1192: return '';
1193: }
1194:
1195: # ---------------------------------------------------------- Return random seed
1196:
1.32 www 1197: sub numval {
1198: my $txt=shift;
1199: $txt=~tr/A-J/0-9/;
1200: $txt=~tr/a-j/0-9/;
1201: $txt=~tr/K-T/0-9/;
1202: $txt=~tr/k-t/0-9/;
1203: $txt=~tr/U-Z/0-5/;
1204: $txt=~tr/u-z/0-5/;
1205: $txt=~s/\D//g;
1206: return int($txt);
1207: }
1208:
1.31 www 1209: sub rndseed {
1210: my $symb;
1.44 www 1211: unless ($symb=&symbread()) { return time; }
1.32 www 1212: my $symbchck=unpack("%32C*",$symb);
1213: my $symbseed=numval($symb)%$symbchck;
1214: my $namechck=unpack("%32C*",$ENV{'user.name'});
1215: my $nameseed=numval($ENV{'user.name'})%$namechck;
1216: return int( $symbseed
1217: .$nameseed
1218: .unpack("%32C*",$ENV{'user.domain'})
1.33 www 1219: .unpack("%32C*",$ENV{'request.course.id'})
1.32 www 1220: .$namechck
1221: .$symbchck);
1.36 albertel 1222: }
1223:
1224: # ------------------------------------------------------------ Serves up a file
1225: # returns either the contents of the file or a -1
1226: sub getfile {
1227: my $file=shift;
1.37 www 1228: &repcopy($file);
1.36 albertel 1229: if (! -e $file ) { return -1; };
1230: my $fh=Apache::File->new($file);
1231: my $a='';
1232: while (<$fh>) { $a .=$_; }
1233: return $a
1234: }
1235:
1236: sub filelocation {
1237: my ($dir,$file) = @_;
1238: my $location;
1239: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1240: $file=~s/^$perlvar{'lonDocRoot'}//;
1241: $file=~s:^/*res::;
1242: if ( !( $file =~ m:^/:) ) {
1243: $location = $dir. '/'.$file;
1244: } else {
1245: $location = '/home/httpd/html/res'.$file;
1246: }
1247: $location=~s://+:/:g; # remove duplicate /
1.46 www 1248: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
1249: return $location;
1250: }
1.36 albertel 1251:
1.46 www 1252: sub hreflocation {
1253: my ($dir,$file)=@_;
1254: unless (($_=~/^http:\/\//i) || ($_=~/^\//)) {
1255: my $finalpath=filelocation($dir,$file);
1256: $finalpath=~s/^\/home\/httpd\/html//;
1257: return $finalpath;
1258: } else {
1259: return $file;
1260: }
1.31 www 1261: }
1262:
1263: # ------------------------------------------------------------- Declutters URLs
1264:
1265: sub declutter {
1266: my $thisfn=shift;
1267: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
1268: $thisfn=~s/^\///;
1269: $thisfn=~s/^res\///;
1270: return $thisfn;
1.12 www 1271: }
1272:
1273: # -------------------------------------------------------- Escape Special Chars
1274:
1275: sub escape {
1276: my $str=shift;
1277: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
1278: return $str;
1279: }
1280:
1281: # ----------------------------------------------------- Un-Escape Special Chars
1282:
1283: sub unescape {
1284: my $str=shift;
1285: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1286: return $str;
1287: }
1.11 www 1288:
1.1 albertel 1289: # ================================================================ Main Program
1290:
1291: sub BEGIN {
1292: if ($readit ne 'done') {
1293: # ------------------------------------------------------------ Read access.conf
1294: {
1295: my $config=Apache::File->new("/etc/httpd/conf/access.conf");
1296:
1297: while (my $configline=<$config>) {
1298: if ($configline =~ /PerlSetVar/) {
1299: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 1300: chomp($varvalue);
1.1 albertel 1301: $perlvar{$varname}=$varvalue;
1302: }
1303: }
1304: }
1305:
1306: # ------------------------------------------------------------- Read hosts file
1307: {
1308: my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
1309:
1310: while (my $configline=<$config>) {
1311: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
1312: $hostname{$id}=$name;
1313: $hostdom{$id}=$domain;
1314: if ($role eq 'library') { $libserv{$id}=$name; }
1315: }
1316: }
1317:
1318: # ------------------------------------------------------ Read spare server file
1319: {
1320: my $config=Apache::File->new("$perlvar{'lonTabDir'}/spare.tab");
1321:
1322: while (my $configline=<$config>) {
1323: chomp($configline);
1324: if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
1325: $spareid{$configline}=1;
1326: }
1327: }
1328: }
1.11 www 1329: # ------------------------------------------------------------ Read permissions
1330: {
1331: my $config=Apache::File->new("$perlvar{'lonTabDir'}/roles.tab");
1332:
1333: while (my $configline=<$config>) {
1334: chomp($configline);
1335: my ($role,$perm)=split(/ /,$configline);
1336: if ($perm ne '') { $pr{$role}=$perm; }
1337: }
1338: }
1339:
1340: # -------------------------------------------- Read plain texts for permissions
1341: {
1342: my $config=Apache::File->new("$perlvar{'lonTabDir'}/rolesplain.tab");
1343:
1344: while (my $configline=<$config>) {
1345: chomp($configline);
1346: my ($short,$plain)=split(/:/,$configline);
1347: if ($plain ne '') { $prp{$short}=$plain; }
1.25 www 1348: }
1349: }
1350:
1351: # ------------------------------------------------------------- Read file types
1352: {
1353: my $config=Apache::File->new("$perlvar{'lonTabDir'}/filetypes.tab");
1354:
1355: while (my $configline=<$config>) {
1356: chomp($configline);
1357: my ($ending,$emb,@descr)=split(/\s+/,$configline);
1358: if ($descr[0] ne '') {
1359: $fe{$ending}=$emb;
1360: $fd{$ending}=join(' ',@descr);
1361: }
1.11 www 1362: }
1363: }
1364:
1.22 www 1365:
1.1 albertel 1366: $readit='done';
1.12 www 1367: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.1 albertel 1368: }
1369: }
1370: 1;
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