1: # The LearningOnline Network
2: # Cookie Based Access Handler
3: #
4: # $Id: lonacc.pm,v 1.159.2.21.2.4 2023/01/23 00:32:03 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =head1 NAME
31:
32: Apache::lonacc - Cookie Based Access Handler
33:
34: =head1 SYNOPSIS
35:
36: Invoked (for various locations) by /etc/httpd/conf/srm.conf:
37:
38: PerlAccessHandler Apache::lonacc
39:
40: =head1 INTRODUCTION
41:
42: This module enables cookie based authentication and is used
43: to control access for many different LON-CAPA URIs.
44:
45: Whenever the client sends the cookie back to the server,
46: this cookie is handled by either lonacc.pm or loncacc.pm
47: (see srm.conf for what is invoked when). If
48: the cookie is missing or invalid, the user is re-challenged
49: for login information.
50:
51: This is part of the LearningOnline Network with CAPA project
52: described at http://www.lon-capa.org.
53:
54: =head1 HANDLER SUBROUTINE
55:
56: This routine is called by Apache and mod_perl.
57:
58: =over 4
59:
60: =item *
61:
62: transfer profile into environment
63:
64: =item *
65:
66: load POST parameters
67:
68: =item *
69:
70: check access
71:
72: =item *
73:
74: if allowed, get symb, log, generate course statistics if applicable
75:
76: =item *
77:
78: otherwise return error
79:
80: =item *
81:
82: see if public resource
83:
84: =item *
85:
86: store attempted access
87:
88: =back
89:
90: =head1 NOTABLE SUBROUTINES
91:
92: =cut
93:
94:
95: package Apache::lonacc;
96:
97: use strict;
98: use Apache::Constants qw(:common :http :methods);
99: use Apache::File;
100: use Apache::lonnet;
101: use Apache::loncommon();
102: use Apache::lonlocal;
103: use Apache::restrictedaccess();
104: use Apache::blockedaccess();
105: use Apache::lonprotected();
106: use Fcntl qw(:flock);
107: use LONCAPA qw(:DEFAULT :match);
108:
109: sub cleanup {
110: my ($r)=@_;
111: if (! $r->is_initial_req()) { return DECLINED; }
112: &Apache::lonnet::save_cache();
113: return OK;
114: }
115:
116: sub goodbye {
117: my ($r)=@_;
118: &Apache::lonnet::goodbye();
119: return DONE;
120: }
121:
122: ###############################################
123:
124: sub get_posted_cgi {
125: my ($r,$fields) = @_;
126:
127: my $buffer;
128: if ($r->header_in('Content-length')) {
129: $r->read($buffer,$r->header_in('Content-length'),0);
130: }
131: my $content_type = $r->header_in('Content-type');
132: if ($content_type !~ m{^multipart/form-data}) {
133: my @pairs=split(/&/,$buffer);
134: my $pair;
135: foreach $pair (@pairs) {
136: my ($name,$value) = split(/=/,$pair);
137: $value =~ tr/+/ /;
138: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
139: $name =~ tr/+/ /;
140: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
141: if (ref($fields) eq 'ARRAY') {
142: next if (!grep(/^\Q$name\E$/,@{$fields}));
143: }
144: &Apache::loncommon::add_to_env("form.$name",$value);
145: }
146: } else {
147: my ($contentsep) = ($content_type =~ /boundary=\"?([^\";,]+)\"?/);
148: my @lines = split (/\n/,$buffer);
149: my $name='';
150: my $value='';
151: my $fname='';
152: my $fmime='';
153: my $i;
154: for ($i=0;$i<=$#lines;$i++) {
155: if ($lines[$i]=~/^--\Q$contentsep\E/) {
156: if ($name) {
157: chomp($value);
158: if (($r->uri eq '/adm/portfolio') &&
159: ($name eq 'uploaddoc')) {
160: if (length($value) == 1) {
161: $value=~s/[\r\n]$//;
162: }
163: }
164: if ($fname =~ /\.(xls|doc|ppt)(x|m)$/i) {
165: $value=~s/[\r\n]$//;
166: }
167: if (ref($fields) eq 'ARRAY') {
168: next if (!grep(/^\Q$name\E$/,@{$fields}));
169: }
170: if ($fname) {
171: if ($env{'form.symb'} ne '') {
172: my $size = (length($value))/(1024.0 * 1024.0);
173: if (&upload_size_allowed($name,$size,$fname) eq 'ok') {
174: $env{"form.$name.filename"}=$fname;
175: $env{"form.$name.mimetype"}=$fmime;
176: &Apache::loncommon::add_to_env("form.$name",$value);
177: }
178: } else {
179: $env{"form.$name.filename"}=$fname;
180: $env{"form.$name.mimetype"}=$fmime;
181: &Apache::loncommon::add_to_env("form.$name",$value);
182: }
183: } else {
184: $value=~s/\s+$//s;
185: &Apache::loncommon::add_to_env("form.$name",$value);
186: }
187: }
188: if ($i<$#lines) {
189: $i++;
190: $lines[$i]=~
191: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
192: $name=$1;
193: $value='';
194: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
195: $fname=$1;
196: if
197: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
198: $fmime=$1;
199: $i++;
200: } else {
201: $fmime='';
202: }
203: } else {
204: $fname='';
205: $fmime='';
206: }
207: $i++;
208: }
209: } else {
210: $value.=$lines[$i]."\n";
211: }
212: }
213: }
214: #
215: # Digested POSTed values
216: #
217: # Remember the way this was originally done (GET or POST)
218: #
219: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
220: #
221: # There may also be stuff in the query string
222: # Tell subsequent handlers that this was GET, not POST, so they can access query string.
223: # Also, unset POSTed content length to cover all tracks.
224: #
225:
226: $r->method_number(M_GET);
227:
228: $r->method('GET');
229: $r->headers_in->unset('Content-length');
230: }
231:
232: =pod
233:
234: =over
235:
236: =item upload_size_allowed()
237:
238: Perform size checks for file uploads to essayresponse items in course context.
239:
240: Add form.HWFILESIZE.$part_$id to %env with file size (MB)
241: If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env.
242:
243: =cut
244:
245: sub upload_size_allowed {
246: my ($name,$size,$fname) = @_;
247: if ($name =~ /^HWFILE(\w+)$/) {
248: my $ident = $1;
249: my $item = 'HWFILESIZE'.$ident;
250: my $savesize = sprintf("%.6f",$size);
251: &Apache::loncommon::add_to_env("form.$item",$savesize);
252: my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize");
253: if (!$maxsize) {
254: $maxsize = 10.0; # FIXME This should become a domain configuration.
255: }
256: if ($size > $maxsize) {
257: my $warn = 'HWFILETOOBIG'.$ident;
258: &Apache::loncommon::add_to_env("form.$warn",$fname);
259: return;
260: }
261: }
262: return 'ok';
263: }
264:
265: =pod
266:
267: =item sso_login()
268:
269: handle the case of the single sign on user, at this point $r->user
270: will be set and valid; now need to find the loncapa user info, and possibly
271: balance them. If $r->user() is set this means either it was either set by
272: SSO or by checkauthen.pm, if a valid cookie was found. The latter case can
273: be identified by the third arg ($usename), except when lonacc is called in
274: an internal redirect to /adm/switchserver (e.g., load-balancing following
275: successful authentication) -- no cookie set yet. For that particular case
276: simply skip the call to sso_login().
277:
278: returns OK if it was SSO and user was handled.
279: returns undef if not SSO or no means to handle the user.
280:
281: In the case where the session was started from /adm/launch/tiny/$domain/$id,
282: i.e., for a protected link, with launch from another CMS, and user information
283: is accepted from the LTI payload, then, if the user has privileged roles,
284: authentication will be required. If SSO authentication is with a username
285: and/or domain that differ from the username in the LTI payload and domain
286: in the launch URL, then $r->user() will be unset and /adm/relaunch will be
287: called.
288:
289: =cut
290:
291: sub sso_login {
292: my ($r,$handle,$username) = @_;
293:
294: if (($r->user eq '') || ($username ne '') || ($r->user eq 'public:public') ||
295: (defined($env{'user.name'}) && (defined($env{'user.domain'}))
296: && ($handle ne ''))) {
297: # not an SSO case or already logged in
298: return undef;
299: }
300:
301: my ($user) = ($r->user =~ m/^($match_username)$/);
302: if ($user eq '') {
303: return undef;
304: }
305:
306: my $query = $r->args;
307: my %form;
308: if ($query) {
309:
310: my @items = ('role','symb','iptoken','origurl','ttoken',
311: 'ltoken','linkkey','logtoken','sso','lcssowin');
312: &Apache::loncommon::get_unprocessed_cgi($query,\@items);
313: foreach my $item (@items) {
314: if (defined($env{'form.'.$item})) {
315: $form{$item} = $env{'form.'.$item};
316: }
317: }
318: }
319:
320: my %sessiondata;
321: if ($form{'iptoken'}) {
322: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
323: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
324: unless ($sessiondata{'sessionserver'}) {
325: delete($form{'iptoken'});
326: }
327: }
328:
329: my ($linkprot,$linkprotuser,$linkprotexit,$linkkey,$deeplinkurl);
330:
331: #
332: # If Shibboleth auth is in use, and a dual SSO and non-SSO login page
333: # is in use, then the query string will contain the logtoken item with
334: # a value set to the name of a .tmp file in /home/httpd/perl/tmp
335: # containing the url to display after authentication, and also,
336: # optionally, role and symb, or linkprot or linkkey (deep-link access).
337: #
338: # If Shibboleth auth is in use, but a dual log-in page is not in use,
339: # and the originally requested URL was /tiny/$domain/$id (i.e.,
340: # for deeplinking), then the query string will contain the sso item
341: # with a value set to the name of a .tmp file in /home/httpd/perl/tmp
342: # containing the url to display after authentication, and also,
343: # optionally, linkprot or linkkey (deep-link access).
344: #
345: # Otherwise the query string may contain role and symb, or if the
346: # originally requested URL was /tiny/$domain/$id (i.e. for deeplinking)
347: # then the query string may contain a ttoken item with a value set
348: # to the name of a .tmp file in /home/httpd/perl/tmp containing either
349: # linkprot or linkkey (deep-link access).
350: #
351: # If deep-linked, i.e., the originally requested URL was /tiny/$domain/$id
352: # the linkkey may have originally been sent in POSTed data, which will
353: # have been processed in lontrans.pm
354: #
355:
356: if ($form{'ttoken'}) {
357: my %info = &Apache::lonnet::tmpget($form{'ttoken'});
358: &Apache::lonnet::tmpdel($form{'ttoken'});
359: if ($info{'origurl'}) {
360: $form{'origurl'} = $info{'origurl'};
361: if ($form{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) {
362: $deeplinkurl = $form{'origurl'};
363: }
364: }
365: if ($info{'linkprot'}) {
366: $linkprot = $info{'linkprot'};
367: $linkprotuser = $info{'linkprotuser'};
368: $linkprotexit = $info{'linkprotexit'};
369: } elsif ($info{'linkkey'} ne '') {
370: $linkkey = $info{'linkkey'};
371: }
372: } elsif ($form{'logtoken'}) {
373: my ($firsturl,@rest);
374: my $lonhost = $r->dir_config('lonHostID');
375: my $tmpinfo = &Apache::lonnet::reply('tmpget:'.$form{'logtoken'},$lonhost);
376: my $delete = &Apache::lonnet::tmpdel($form{'logtoken'});
377: unless (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
378: ($tmpinfo eq 'no_such_host')) {
379: (undef,$firsturl,@rest) = split(/&/,$tmpinfo);
380: if ($firsturl ne '') {
381: $firsturl = &unescape($firsturl);
382: }
383: foreach my $item (@rest) {
384: my ($key,$value) = split(/=/,$item);
385: $form{$key} = &unescape($value);
386: }
387: if ($firsturl =~ m{^/tiny/$match_domain/\w+$}) {
388: $form{'origurl'} = $firsturl;
389: $deeplinkurl = $firsturl;
390: } elsif ($firsturl eq '/adm/email') {
391: $form{'origurl'} = $firsturl;
392: }
393: if ($form{'linkprot'}) {
394: $linkprot = $form{'linkprot'};
395: $linkprotuser = $form{'linkprotuser'};
396: $linkprotexit = $form{'linkprotexit'};
397: } elsif ($form{'linkkey'} ne '') {
398: $linkkey = $form{'linkkey'};
399: }
400: if ($form{'iptoken'}) {
401: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
402: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
403: }
404: }
405: } elsif ($form{'sso'}) {
406: my $lonhost = $r->dir_config('lonHostID');
407: my $info = &Apache::lonnet::reply('tmpget:'.$form{'sso'},$lonhost);
408: &Apache::lonnet::tmpdel($form{'sso'});
409: unless (($info=~/^error/) || ($info eq 'con_lost') ||
410: ($info eq 'no_such_host')) {
411: my ($firsturl,@rest)=split(/\&/,$info);
412: if ($firsturl ne '') {
413: $form{'origurl'} = &unescape($firsturl);
414: if ($form{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) {
415: $deeplinkurl = $form{'origurl'};
416: }
417: }
418: foreach my $item (@rest) {
419: my ($key,$value) = split(/=/,$item);
420: $form{$key} = &unescape($value);
421: }
422: if ($form{'linkprot'}) {
423: $linkprot = $form{'linkprot'};
424: $linkprotuser = $form{'linkprotuser'};
425: $linkprotexit = $form{'linkprotexit'};
426: } elsif ($form{'linkkey'} ne '') {
427: $linkkey = $form{'linkkey'};
428: }
429: }
430: } elsif ($form{'ltoken'}) {
431: my %link_info = &Apache::lonnet::tmpget($form{'ltoken'});
432: $linkprot = $link_info{'linkprot'};
433: if ($linkprot) {
434: if ($link_info{'linkprotuser'} ne '') {
435: $linkprotuser = $link_info{'linkprotuser'};
436: }
437: if ($link_info{'linkprotexit'} ne '') {
438: $linkprotexit = $link_info{'linkprotexit'};
439: }
440: }
441: my $delete = &Apache::lonnet::tmpdel($form{'ltoken'});
442: delete($form{'ltoken'});
443: if ($form{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) {
444: $deeplinkurl = $form{'origurl'};
445: }
446: } elsif ($form{'linkkey'} ne '') {
447: $linkkey = $form{'linkkey'};
448: }
449:
450: my $domain = $r->dir_config('lonSSOUserDomain');
451: if ($domain eq '') {
452: $domain = $r->dir_config('lonDefDomain');
453: }
454: if (($deeplinkurl) && ($linkprot) && ($linkprotuser ne '')) {
455: unless ($linkprotuser eq $user.':'.$domain) {
456: $r->user();
457: my %data = (
458: origurl => $deeplinkurl,
459: linkprot => $linkprot,
460: linkprotuser => $linkprotuser,
461: linkprotexit => $linkprotexit,
462: );
463: if ($env{'form.lcssowin'}) {
464: $data{'lcssowin'} = $env{'form.lcssowin'};
465: }
466: my $token = &Apache::lonnet::tmpput(\%data,$r->dir_config('lonHostID'),'link');
467: unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) ||
468: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
469: $r->internal_redirect('/adm/relaunch?rtoken='.$token);
470: $r->set_handlers('PerlHandler'=> undef);
471: return OK;
472: }
473: }
474: }
475: my $home=&Apache::lonnet::homeserver($user,$domain);
476: if ($home !~ /(con_lost|no_host|no_such_host)/) {
477: &Apache::lonnet::logthis(" SSO authorized user $user ");
478: my ($is_balancer,$otherserver,$hosthere);
479: if ($form{'iptoken'}) {
480: if (($sessiondata{'domain'} eq $domain) &&
481: ($sessiondata{'username'} eq $user)) {
482: $hosthere = 1;
483: }
484: }
485: unless ($hosthere) {
486: ($is_balancer,$otherserver) =
487: &Apache::lonnet::check_loadbalancing($user,$domain,'login');
488: if ($is_balancer) {
489: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
490: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
491: if (($found_server) && ($balancer_cookie =~ /^\Q$domain\E_\Q$user\E_/)) {
492: $otherserver = $found_server;
493: } elsif ($otherserver eq '') {
494: my $lowest_load;
495: ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($domain);
496: if ($lowest_load > 100) {
497: $otherserver = &Apache::lonnet::spareserver($r,$lowest_load,$lowest_load,1,$domain);
498: }
499: if ($otherserver ne '') {
500: my @hosts = &Apache::lonnet::current_machine_ids();
501: if (grep(/^\Q$otherserver\E$/,@hosts)) {
502: $hosthere = $otherserver;
503: }
504: }
505: }
506: }
507: }
508: if (($is_balancer) && (!$hosthere)) {
509: # login but immediately go to switch server to find us a new
510: # machine
511: &Apache::lonauth::success($r,$user,$domain,$home,'noredirect');
512: foreach my $item (keys(%form)) {
513: $env{'form.'.$item} = $form{$item};
514: }
515: unless (($form{'symb'}) || ($form{'origurl'})) {
516: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
517: $env{'form.origurl'} = $r->uri;
518: }
519: }
520: if (($r->uri eq '/adm/sso') && ($form{'origurl'} =~ m{^/+tiny/+$match_domain/+\w+$})) {
521: $env{'request.deeplink.login'} = $form{'origurl'};
522: } elsif ($r->uri =~ m{^/+tiny/+$match_domain/+\w+$}) {
523: $env{'request.deeplink.login'} = $r->uri;
524: }
525: if ($env{'request.deeplink.login'}) {
526: if ($linkprot) {
527: $env{'request.linkprot'} = $linkprot;
528: if ($linkprotuser ne '') {
529: $env{'request.linkprotuser'} = $linkprotuser;
530: }
531: if ($linkprotexit ne '') {
532: $env{'request.linkprotexit'} = $linkprotexit;
533: }
534: } elsif ($linkkey ne '') {
535: $env{'request.linkkey'} = $linkkey;
536: }
537: }
538: if (($r->uri eq '/adm/sso') && ($form{'origurl'} eq '/adm/email')) {
539: if ($form{'display'} && ($env{'form.mailrecip'} eq $user.':'.$domain)) {
540: $env{'request.display'} = $form{'display'};
541: $env{'request.mailrecip'} = $env{'form.mailrecip'};
542: }
543: }
544: $env{'request.sso.login'} = 1;
545: if (defined($r->dir_config("lonSSOReloginServer"))) {
546: $env{'request.sso.reloginserver'} =
547: $r->dir_config('lonSSOReloginServer');
548: }
549: my $redirecturl = '/adm/switchserver';
550: if ($otherserver ne '') {
551: $redirecturl .= '?otherserver='.$otherserver;
552: }
553: if ($form{'lcssowin'}) {
554: $redirecturl .= (($redirecturl=~/\?/)?'&':'?') . 'lcssowin=1';
555: }
556: $r->internal_redirect($redirecturl);
557: $r->set_handlers('PerlHandler'=> undef);
558: } else {
559: # need to login them in, so generate the need data that
560: # migrate expects to do login
561: my $ip = &Apache::lonnet::get_requestor_ip($r);
562: my %info=('ip' => $ip,
563: 'domain' => $domain,
564: 'username' => $user,
565: 'server' => $r->dir_config('lonHostID'),
566: 'sso.login' => 1
567: );
568: foreach my $item ('role','symb','iptoken','origurl','lcssowin') {
569: if (exists($form{$item})) {
570: $info{$item} = $form{$item};
571: } elsif ($sessiondata{$item} ne '') {
572: $info{$item} = $sessiondata{$item};
573: }
574: }
575: unless (($info{'symb'}) || ($info{'origurl'})) {
576: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
577: $info{'origurl'} = $r->uri;
578: }
579: }
580: if (($r->uri eq '/adm/sso') && ($form{'origurl'} =~ m{^/+tiny/+$match_domain/+\w+$})) {
581: $info{'deeplink.login'} = $form{'origurl'};
582: } elsif ($r->uri =~ m{^/+tiny/+$match_domain/+\w+$}) {
583: $info{'deeplink.login'} = $r->uri;
584: }
585: if ($info{'deeplink.login'}) {
586: if ($linkprot) {
587: $info{'linkprot'} = $linkprot;
588: if ($linkprotuser ne '') {
589: $info{'linkprotuser'} = $linkprotuser;
590: }
591: if ($linkprotexit ne '') {
592: $info{'linkprotexit'} = $linkprotexit;
593: }
594: } elsif ($linkkey ne '') {
595: $info{'linkkey'} = $linkkey;
596: }
597: }
598: if (($r->uri eq '/adm/sso') && ($form{'origurl'} eq '/adm/email')) {
599: if ($form{'display'} && ($form{'mailrecip'} eq $user.':'.$domain)) {
600: $info{'display'} = &escape($form{'display'});
601: $info{'mailrecip'} = &escape($form{'mailrecip'});
602: }
603: }
604: if ($r->dir_config("ssodirecturl") == 1) {
605: $info{'origurl'} = $r->uri;
606: }
607: if (defined($r->dir_config("lonSSOReloginServer"))) {
608: $info{'sso.reloginserver'} =
609: $r->dir_config('lonSSOReloginServer');
610: }
611: if (($is_balancer) && ($hosthere)) {
612: $info{'noloadbalance'} = $hosthere;
613: }
614: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'sso');
615: $env{'form.token'} = $token;
616: $r->internal_redirect('/adm/migrateuser');
617: $r->set_handlers('PerlHandler'=> undef);
618: }
619: return OK;
620: } else {
621: &Apache::lonnet::logthis(" SSO authorized unknown user $user ");
622: my @cancreate;
623: my %domconfig =
624: &Apache::lonnet::get_dom('configuration',['usercreation'],$domain);
625: if (ref($domconfig{'usercreation'}) eq 'HASH') {
626: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
627: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
628: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
629: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
630: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
631: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
632: }
633: }
634: }
635: if ((grep(/^sso$/,@cancreate)) || (defined($r->dir_config('lonSSOUserUnknownRedirect')))) {
636: $r->subprocess_env->set('SSOUserUnknown' => $user);
637: $r->subprocess_env->set('SSOUserDomain' => $domain);
638: if (grep(/^sso$/,@cancreate)) {
639: #FIXME - need to preserve origurl, role and symb, or linkprot or linkkey for use after account
640: # creation. If lcssowin is 1, createaccount needs to close pop-up and display in main window.
641: $r->set_handlers('PerlHandler'=> [\&Apache::createaccount::handler]);
642: $r->handler('perl-script');
643: } else {
644: $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect'));
645: $r->set_handlers('PerlHandler'=> undef);
646: }
647: return OK;
648: }
649: }
650: return undef;
651: }
652:
653: sub handler {
654: my $r = shift;
655: my $requrl=$r->uri;
656:
657: if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) {
658: return OK;
659: }
660:
661: if (&Apache::lonnet::is_domainimage($requrl)) {
662: return OK;
663: }
664:
665: my %user;
666: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
667:
668: unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) {
669: my $result = &sso_login($r,$handle,$user{'name'});
670: if (defined($result)) {
671: return $result;
672: }
673: }
674:
675: my ($is_balancer,$otherserver);
676:
677: if ($handle eq '') {
678: unless ((($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) ||
679: ($requrl =~ m{^/public/$match_domain/$match_courseid/syllabus}) ||
680: ($requrl =~ m{^/adm/help/}) || ($requrl eq '/adm/sso') ||
681: ($requrl =~ m{^/res/$match_domain/$match_username/})) {
682: $r->log_reason("Cookie not valid", $r->filename);
683: }
684: } elsif ($handle ne '') {
685:
686: # ------------------------------------------------------ Initialize Environment
687: my $lonidsdir=$r->dir_config('lonIDsDir');
688: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
689:
690: # --------------------------------------------------------- Initialize Language
691:
692: &Apache::lonlocal::get_language_handle($r);
693:
694: }
695:
696: # -------------------------------------------------- Should be a valid user now
697: if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') {
698: # -------------------------------------------------------------- Resource State
699:
700: my ($cdom,$cnum);
701: if ($env{'request.course.id'}) {
702: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
703: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
704: }
705: if ($requrl=~/^\/+(res|uploaded)\//) {
706: $env{'request.state'} = "published";
707: } else {
708: $env{'request.state'} = 'unknown';
709: }
710: $env{'request.filename'} = $r->filename;
711: $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);
712: my ($suppext,$checkabsolute);
713: if ($requrl =~ m{^/adm/wrapper/ext/}) {
714: my $query = $r->args;
715: if ($query) {
716: my $preserved;
717: foreach my $pair (split(/&/,$query)) {
718: my ($name, $value) = split(/=/,$pair);
719: unless (($name eq 'symb') || ($name eq 'usehttp')) {
720: $preserved .= $pair.'&';
721: }
722: if (($env{'request.course.id'}) && ($name eq 'folderpath')) {
723: if ($value =~ /^supplemental/) {
724: $suppext = 1;
725: }
726: }
727: }
728: $preserved =~ s/\&$//;
729: if ($preserved) {
730: $env{'request.external.querystring'} = $preserved;
731: }
732: }
733: if ($env{'request.course.id'}) {
734: $checkabsolute = 1;
735: }
736: } elsif ($env{'request.course.id'} &&
737: (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) ||
738: ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}))) {
739: my $query = $r->args;
740: if ($query) {
741: foreach my $pair (split(/&/,$query)) {
742: my ($name, $value) = split(/=/,$pair);
743: if ($name eq 'folderpath') {
744: if ($value =~ /^supplemental/) {
745: $suppext = 1;
746: }
747: last;
748: }
749: }
750: }
751: if ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}) {
752: $checkabsolute = 1;
753: }
754: }
755: if ($checkabsolute) {
756: my $hostname = $r->hostname();
757: my $lonhost = &Apache::lonnet::host_from_dns($hostname);
758: if ($lonhost) {
759: my $actual = &Apache::lonnet::absolute_url($hostname,1,1);
760: my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
761: unless ($actual eq $expected) {
762: $env{'request.use_absolute'} = $expected;
763: }
764: }
765: }
766: # -------------------------------------------------------- Load POST parameters
767:
768: &Apache::lonacc::get_posted_cgi($r);
769:
770: # ------------------------------------------------------ Check if load balancer
771:
772: my $checkexempt;
773: if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) {
774: if ($env{'user.loadbalcheck.time'} + 600 > time) {
775: $checkexempt = 1;
776: }
777: }
778: if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) {
779: $checkexempt = 1;
780: }
781: unless (($checkexempt) || (($requrl eq '/adm/switchserver') && (!$r->is_initial_req()))) {
782: ($is_balancer,$otherserver) =
783: &Apache::lonnet::check_loadbalancing($env{'user.name'},
784: $env{'user.domain'});
785: if ($is_balancer) {
786: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
787: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
788: if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
789: $otherserver = $found_server;
790: }
791: unless ($requrl eq '/adm/switchserver') {
792: $r->set_handlers('PerlResponseHandler'=>
793: [\&Apache::switchserver::handler]);
794: }
795: if ($otherserver ne '') {
796: $env{'form.otherserver'} = $otherserver;
797: }
798: unless (($env{'form.origurl'}) || ($r->uri eq '/adm/roles') ||
799: ($r->uri eq '/adm/switchserver') || ($r->uri eq '/adm/sso')) {
800: $env{'form.origurl'} = $r->uri;
801: }
802: }
803: }
804: if ($requrl=~m{^/+tiny/+$match_domain/+\w+$}) {
805: if ($r->args) {
806: &Apache::loncommon::get_unprocessed_cgi($r->args,['ttoken']);
807: if (defined($env{'form.ttoken'})) {
808: my %info = &Apache::lonnet::tmpget($env{'form.ttoken'});
809: if (($info{'origurl'} ne '') && ($info{'origurl'} eq $requrl)) {
810: my %data;
811: if (($info{'linkprotuser'} ne '') && ($info{'linkprot'}) &&
812: ($info{'linkprotuser'} ne $env{'user.name'}.':'.$env{'user.domain'})) {
813: %data = (
814: origurl => $requrl,
815: linkprot => $info{'linkprot'},
816: linkprotuser => $info{'linkprotuser'},
817: linkprotexit => $info{'linkprotexit'},
818: );
819: } elsif ($info{'ltoken'} ne '') {
820: my %ltoken_info = &Apache::lonnet::tmpget($info{'ltoken'});
821: if (($ltoken_info{'linkprotuser'} ne '') && ($ltoken_info{'linkprot'}) &&
822: ($ltoken_info{'linkprotuser'} ne $env{'user.name'}.':'.$env{'user.domain'})) {
823: %data = (
824: origurl => $requrl,
825: linkprot => $ltoken_info{'linkprot'},
826: linkprotuser => $ltoken_info{'linkprotuser'},
827: linkprotexit => $ltoken_info{'linkprotexit'},
828: );
829: }
830: }
831: if (keys(%data)) {
832: my $delete = &Apache::lonnet::tmpdel($env{'form.ttoken'});
833: if ($info{'ltoken'} ne '') {
834: my $delete = &Apache::lonnet::tmpdel($info{'ltoken'});
835: }
836: my $token =
837: &Apache::lonnet::tmpput(\%data,$r->dir_config('lonHostID'),'retry');
838: unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) ||
839: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
840: $r->internal_redirect('/adm/relaunch?rtoken='.$token);
841: $r->set_handlers('PerlHandler'=> undef);
842: return OK;
843: }
844: }
845: }
846: }
847: }
848: if ($env{'user.name'} eq 'public' &&
849: $env{'user.domain'} eq 'public') {
850: $env{'request.firsturl'}=$requrl;
851: return FORBIDDEN;
852: }
853: return OK;
854: }
855: # ---------------------------------------------------------------- Check access
856: my $now = time;
857: my ($check_symb,$check_access,$check_block,$access,$poss_symb);
858: if ($requrl !~ m{^/(?:adm|public|(?:prt|zip)spool)/}
859: || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) {
860: $check_access = 1;
861: }
862: if ((!$check_access) && ($env{'request.course.id'})) {
863: if (($requrl eq '/adm/viewclasslist') ||
864: ($requrl =~ m{^(/adm/wrapper|)\Q/uploaded/$cdom/$cnum/docs/\E}) ||
865: ($requrl =~ m{^/adm/.*/aboutme$}) ||
866: ($requrl=~m{^/adm/coursedocs/showdoc/}) ||
867: ($requrl=~m{^(/adm/wrapper|)/adm/$cdom/$cnum/\d+/ext\.tool$})) {
868: $check_block = 1;
869: }
870: }
871: if (($env{'request.course.id'}) && (!$suppext)) {
872: $requrl=~/\.(\w+)$/;
873: if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
874: ($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) ||
875: ($requrl=~/^\/adm\/wrapper\//) ||
876: ($requrl=~m|^/adm/coursedocs/showdoc/|) ||
877: ($requrl=~m|\.problem/smpedit$|) ||
878: ($requrl=~/^\/public\/.*\/syllabus$/) ||
879: ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) ||
880: ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/) ||
881: ($requrl=~m{^/adm/$cdom/$cnum/\d+/ext\.tool$})) {
882: $check_symb = 1;
883: }
884: }
885: if (($check_access) || ($check_block)) {
886: if ($check_symb) {
887: if ($env{'form.symb'}) {
888: $poss_symb=&Apache::lonnet::symbclean($env{'form.symb'});
889: } elsif (($env{'request.course.id'}) && ($r->args ne '')) {
890: my $query = $r->args;
891: foreach my $pair (split(/&/,$query)) {
892: my ($name, $value) = split(/=/,$pair);
893: $name = &unescape($name);
894: $value =~ tr/+/ /;
895: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
896: if ($name eq 'symb') {
897: $poss_symb = &Apache::lonnet::symbclean($value);
898: last;
899: }
900: }
901: }
902: if ($poss_symb) {
903: my ($possmap,$resid,$url)=&Apache::lonnet::decode_symb($poss_symb);
904: $url = &Apache::lonnet::clutter($url);
905: my $toplevelmap = $env{'course.'.$env{'request.course.id'}.'.url'};
906: unless (($url eq $requrl) && (($possmap eq $toplevelmap) ||
907: (&Apache::lonnet::is_on_map($possmap)))) {
908: undef($poss_symb);
909: }
910: if ($poss_symb) {
911: if ((!$env{'request.role.adv'}) && ($env{'acc.randomout'}) &&
912: ($env{'acc.randomout'}=~/\&\Q$poss_symb\E\&/)) {
913: undef($poss_symb);
914: } elsif ((!$env{'request.role.adv'}) && ($env{'acc.deeplinkout'}) &&
915: ($env{'acc.deeplinkout'}=~/\&\Q$poss_symb\E\&/)) {
916: undef($poss_symb);
917: }
918: }
919: }
920: if ($poss_symb) {
921: $access=&Apache::lonnet::allowed('bre',$requrl,$poss_symb);
922: } else {
923: $access=&Apache::lonnet::allowed('bre',$requrl,'','','','',1);
924: }
925: } else {
926: my $nodeeplinkcheck;
927: if (($check_access) && ($requrl =~ /\.(sequence|page)$/)) {
928: unless ($env{'form.navmap'}) {
929: if ($r->args ne '') {
930: &Apache::loncommon::get_unprocessed_cgi($r->args,['navmap']);
931: unless ($env{'form.navmap'}) {
932: $nodeeplinkcheck = 1;
933: }
934: }
935: }
936: }
937: my $clientip = &Apache::lonnet::get_requestor_ip($r);
938: $access=&Apache::lonnet::allowed('bre',$requrl,'','',$clientip,'','',$nodeeplinkcheck);
939: }
940: }
941: if ($check_block) {
942: if ($access eq 'B') {
943: if ($poss_symb) {
944: if (&Apache::lonnet::symbverify($poss_symb,$requrl)) {
945: $env{'request.symb'} = $poss_symb;
946: }
947: }
948: &Apache::blockedaccess::setup_handler($r);
949: return OK;
950: }
951: } elsif ($check_access) {
952: if ($handle eq '') {
953: unless ($access eq 'F') {
954: if ($requrl =~ m{^/res/$match_domain/$match_username/}) {
955: $r->log_reason("Cookie not valid", $r->filename);
956: }
957: }
958: }
959: if ($access eq '1') {
960: $env{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
961: return HTTP_NOT_ACCEPTABLE;
962: }
963: if ($access eq 'A') {
964: &Apache::restrictedaccess::setup_handler($r);
965: return OK;
966: }
967: if ($access eq 'B') {
968: if ($poss_symb) {
969: if (&Apache::lonnet::symbverify($poss_symb,$requrl)) {
970: $env{'request.symb'} = $poss_symb;
971: }
972: }
973: &Apache::blockedaccess::setup_handler($r);
974: return OK;
975: }
976: if ($access eq 'D') {
977: &Apache::lonprotected::setup_handler($r);
978: return OK;
979: }
980: if (($access ne '2') && ($access ne 'F')) {
981: if ($requrl =~ m{^/res/}) {
982: $access = &Apache::lonnet::allowed('bro',$requrl);
983: if ($access ne 'F') {
984: if ($requrl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
985: $access = &Apache::lonnet::allowed('bre','/res/lib/templates/simpleproblem.problem');
986: if ($access ne 'F') {
987: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
988: return HTTP_NOT_ACCEPTABLE;
989: }
990: } else {
991: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
992: return HTTP_NOT_ACCEPTABLE;
993: }
994: }
995: } elsif (($handle =~ /^publicuser_\d+$/) && (&Apache::lonnet::is_portfolio_url($requrl))) {
996: my $clientip = &Apache::lonnet::get_requestor_ip($r);
997: if (&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip) ne 'F') {
998: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
999: return HTTP_NOT_ACCEPTABLE;
1000: }
1001: } else {
1002: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1003: return HTTP_NOT_ACCEPTABLE;
1004: }
1005: }
1006: }
1007: if ($requrl =~ m|^/prtspool/|) {
1008: my $start='/prtspool/'.$env{'user.name'}.'_'.
1009: $env{'user.domain'};
1010: if ($requrl !~ /^\Q$start\E/) {
1011: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1012: return HTTP_NOT_ACCEPTABLE;
1013: }
1014: }
1015: if ($requrl =~ m|^/zipspool/|) {
1016: my $start='/zipspool/zipout/'.$env{'user.name'}.":".
1017: $env{'user.domain'};
1018: if ($requrl !~ /^\Q$start\E/) {
1019: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1020: return HTTP_NOT_ACCEPTABLE;
1021: }
1022: }
1023: if ($env{'user.name'} eq 'public' &&
1024: $env{'user.domain'} eq 'public' &&
1025: $requrl !~ m{^/+(res|public|uploaded)/} &&
1026: $requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x &&
1027: $requrl !~ m{^/adm/blockingstatus/.*$} &&
1028: $requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) {
1029: $env{'request.querystring'}=$r->args;
1030: $env{'request.firsturl'}=$requrl;
1031: return FORBIDDEN;
1032: }
1033: # ------------------------------------------------------------- This is allowed
1034: if ($env{'request.course.id'}) {
1035: &Apache::lonnet::countacc($requrl);
1036: my $query=$r->args;
1037: if ($check_symb) {
1038: # ------------------------------------- This is serious stuff, get symb and log
1039: my $symb;
1040: if ($query) {
1041: &Apache::loncommon::get_unprocessed_cgi($query,['symb','folderpath']);
1042: }
1043: if ($env{'form.symb'}) {
1044: $symb=&Apache::lonnet::symbclean($env{'form.symb'});
1045: if (($requrl eq '/adm/navmaps') ||
1046: ($requrl =~ m{^/adm/wrapper/}) ||
1047: ($requrl =~ m{^/adm/coursedocs/showdoc/})) {
1048: unless (&Apache::lonnet::symbverify($symb,$requrl)) {
1049: if (&Apache::lonnet::is_on_map($requrl)) {
1050: $symb = &Apache::lonnet::symbread($requrl);
1051: unless (&Apache::lonnet::symbverify($symb,$requrl)) {
1052: undef($symb);
1053: }
1054: }
1055: }
1056: if ($symb) {
1057: if ($requrl eq '/adm/navmaps') {
1058: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
1059: &Apache::lonnet::symblist($map,$murl => [$murl,$mid]);
1060: } elsif (($requrl =~ m{^/adm/wrapper/}) ||
1061: ($requrl =~ m{^/adm/coursedocs/showdoc/})) {
1062: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
1063: if ($map =~ /\.page$/) {
1064: my $mapsymb = &Apache::lonnet::symbread($map);
1065: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
1066: }
1067: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
1068: 'last_known' =>[$murl,$mid]);
1069: }
1070: }
1071: } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) ||
1072: (($requrl=~m|(.*)/smpedit$|) &&
1073: &Apache::lonnet::symbverify($symb,$1)) ||
1074: (($requrl=~m|(.*/aboutme)/portfolio$|) &&
1075: &Apache::lonnet::symbverify($symb,$1))) {
1076: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
1077: if (($map =~ /\.page$/) && ($requrl !~ /\.page$/)) {
1078: my $mapsymb = &Apache::lonnet::symbread($map);
1079: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
1080: }
1081: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
1082: 'last_known' =>[$murl,$mid]);
1083: } else {
1084: $r->log_reason('Invalid symb for '.$requrl.': '.
1085: $symb);
1086: $env{'user.error.msg'}=
1087: "$requrl:bre:1:1:Invalid Access";
1088: return HTTP_NOT_ACCEPTABLE;
1089: }
1090: } else {
1091: if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) {
1092: $requrl = $1;
1093: }
1094: $symb=&Apache::lonnet::symbread($requrl);
1095: if (&Apache::lonnet::is_on_map($requrl) && $symb) {
1096: my ($encstate,$invalidsymb);
1097: unless (&Apache::lonnet::symbverify($symb,$requrl,\$encstate)) {
1098: $invalidsymb = 1;
1099: #
1100: # If $env{'request.enc'} inconsistent with encryption expected for $symb
1101: # retrieved by lonnet::symbread(), call again to check for an instance of
1102: # $requrl in the course for which expected encryption matches request.enc.
1103: # If symb for different instance passes lonnet::symbverify(), use that as
1104: # the symb for $requrl and call &Apache::lonnet::allowed() for that symb.
1105: # Report invalid symb if there is no other symb. Redirect to /adm/ambiguous
1106: # if multiple possible symbs consistent with request.enc available for $requrl.
1107: #
1108: if (($env{'request.enc'} && !$encstate) || (!$env{'request.enc'} && $encstate)) {
1109: my %possibles;
1110: my $nocache = 1;
1111: my $oldsymb = $symb;
1112: $symb = &Apache::lonnet::symbread($requrl,'','','',\%possibles,$nocache);
1113: if (($symb) && ($symb ne $oldsymb)) {
1114: if (&Apache::lonnet::symbverify($symb,$requrl)) {
1115: my $access=&Apache::lonnet::allowed('bre',$requrl,$symb);
1116: if ($access eq 'B') {
1117: $env{'request.symb'} = $symb;
1118: &Apache::blockedaccess::setup_handler($r);
1119: return OK;
1120: } elsif (($access eq '2') || ($access eq 'F')) {
1121: $invalidsymb = '';
1122: }
1123: }
1124: } elsif (keys(%possibles) > 1) {
1125: $r->internal_redirect('/adm/ambiguous');
1126: return OK;
1127: }
1128: }
1129: if ($invalidsymb) {
1130: if ($requrl eq '/adm/navmaps') {
1131: undef($symb);
1132: } else {
1133: $r->log_reason('Invalid symb for '.$requrl.': '.$symb);
1134: $env{'user.error.msg'}=
1135: "$requrl:bre:1:1:Invalid Access";
1136: return HTTP_NOT_ACCEPTABLE;
1137: }
1138: }
1139: }
1140: }
1141: if ($symb) {
1142: my ($map,$mid,$murl)=
1143: &Apache::lonnet::decode_symb($symb);
1144: if ($requrl eq '/adm/navmaps') {
1145: &Apache::lonnet::symblist($map,$murl =>[$murl,$mid]);
1146: } else {
1147: if (($map =~ /\.page$/) && ($requrl !~ /\.page$/)) {
1148: my $mapsymb = &Apache::lonnet::symbread($map);
1149: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
1150: }
1151: &Apache::lonnet::symblist($map,$murl =>[$murl,$mid],
1152: 'last_known' =>[$murl,$mid]);
1153: }
1154: }
1155: }
1156: $env{'request.symb'}=$symb;
1157: if (($env{'request.symbread.cached.'}) && ($env{'request.symbread.cached.'} ne $symb)) {
1158: $env{'request.symbread.cached.'} = $symb;
1159: }
1160: &Apache::lonnet::courseacclog($symb);
1161: } else {
1162: # ------------------------------------------------------- This is other content
1163: &Apache::lonnet::courseacclog($requrl);
1164: }
1165: if ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/.+\.html?$}) {
1166: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1167: if ($query) {
1168: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit']);
1169: if ($env{'form.forceedit'}) {
1170: $env{'request.state'} = 'edit';
1171: }
1172: }
1173: }
1174: } elsif ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/portfolio/syllabus/.+\.html?$}) {
1175: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1176: if ($query) {
1177: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit','editmode']);
1178: if (($env{'form.forceedit'}) || ($env{'form.editmode'})) {
1179: $env{'request.state'} = 'edit';
1180: }
1181: }
1182: }
1183: }
1184: }
1185: return OK;
1186: } else {
1187: my $defdom=$r->dir_config('lonDefDomain');
1188: ($is_balancer,$otherserver) =
1189: &Apache::lonnet::check_loadbalancing(undef,$defdom);
1190: if ($is_balancer) {
1191: $r->set_handlers('PerlResponseHandler'=>
1192: [\&Apache::switchserver::handler]);
1193: if ($otherserver ne '') {
1194: $env{'form.otherserver'} = $otherserver;
1195: }
1196: }
1197: }
1198: # -------------------------------------------- See if this is a public resource
1199: if ($requrl=~m|^/+adm/+help/+|) {
1200: return OK;
1201: }
1202: # ------------------------------------ See if this is a viewable portfolio file
1203: if (&Apache::lonnet::is_portfolio_url($requrl)) {
1204: my $clientip = &Apache::lonnet::get_requestor_ip($r);
1205: my $access=&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip);
1206: if ($access eq 'A') {
1207: &Apache::restrictedaccess::setup_handler($r);
1208: return OK;
1209: }
1210: if (($access ne '2') && ($access ne 'F')) {
1211: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1212: return HTTP_NOT_ACCEPTABLE;
1213: }
1214: }
1215:
1216: # -------------------------------------------------------------- Not authorized
1217: $requrl=~/\.(\w+)$/;
1218: # if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
1219: # ($requrl=~/^\/adm\/(roles|logout|email|menu|remote)/) ||
1220: # ($requrl=~m|^/prtspool/|)) {
1221: # -------------------------- Store where they wanted to go and get login screen
1222: $env{'request.querystring'}=$r->args;
1223: $env{'request.firsturl'}=$requrl;
1224: return FORBIDDEN;
1225: # } else {
1226: # --------------------------------------------------------------------- Goodbye
1227: # return HTTP_BAD_REQUEST;
1228: # }
1229: }
1230:
1231: 1;
1232: __END__
1233:
1234: =pod
1235:
1236: =back
1237:
1238: =cut
1239:
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