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[LON-CAPA] /
loncom /
auth /
lonacc.pm
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Mon Aug 28 20:40:00 2023 UTC (8 months ago) by
raeburn
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CVS tags:
version_2_12_X,
HEAD
- Use standard LON-CAPA error documents for 406, 403 and 500 errors for
/daxeopen/.
- Use loncacc.pm as authz handler for /daxeopen/priv/domain/username/
- Use lonacc.pm as authz handler for /daxeopen/, /daxeopen/priv/, and
/daxeopen/priv/domain/
1: # The LearningOnline Network
2: # Cookie Based Access Handler
3: #
4: # $Id: lonacc.pm,v 1.210 2023/08/28 20:40:00 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: $fmime='';
206: }
207: if ($i<$#lines && $lines[$i+1]=~/^Content\-Type\:\s*([\w\-\/]+)/i) {
208: # TODO: something with $1 !
209: $i++;
210: }
211: if ($i<$#lines && $lines[$i+1]=~/^Content\-transfer\-encoding\:\s*([\w\-\/]+)/i) {
212: # TODO: something with $1 !
213: $i++;
214: }
215: $i++;
216: }
217: } else {
218: $value.=$lines[$i]."\n";
219: }
220: }
221: }
222: #
223: # Digested POSTed values
224: #
225: # Remember the way this was originally done (GET or POST)
226: #
227: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
228: #
229: # There may also be stuff in the query string
230: # Tell subsequent handlers that this was GET, not POST, so they can access query string.
231: # Also, unset POSTed content length to cover all tracks.
232: #
233:
234: $r->method_number(M_GET);
235:
236: $r->method('GET');
237: $r->headers_in->unset('Content-length');
238: }
239:
240: =pod
241:
242: =over
243:
244: =item upload_size_allowed()
245:
246: Perform size checks for file uploads to essayresponse items in course context.
247:
248: Add form.HWFILESIZE.$part_$id to %env with file size (MB)
249: If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env.
250:
251: =cut
252:
253: sub upload_size_allowed {
254: my ($name,$size,$fname) = @_;
255: if ($name =~ /^HWFILE(\w+)$/) {
256: my $ident = $1;
257: my $item = 'HWFILESIZE'.$ident;
258: my $savesize = sprintf("%.6f",$size);
259: &Apache::loncommon::add_to_env("form.$item",$savesize);
260: my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize");
261: if (!$maxsize) {
262: $maxsize = 10.0; # FIXME This should become a domain configuration.
263: }
264: if ($size > $maxsize) {
265: my $warn = 'HWFILETOOBIG'.$ident;
266: &Apache::loncommon::add_to_env("form.$warn",$fname);
267: return;
268: }
269: }
270: return 'ok';
271: }
272:
273: =pod
274:
275: =item sso_login()
276:
277: handle the case of the single sign on user, at this point $r->user
278: will be set and valid; now need to find the loncapa user info, and possibly
279: balance them. If $r->user() is set this means either it was either set by
280: SSO or by checkauthen.pm, if a valid cookie was found. The latter case can
281: be identified by the third arg ($usename), except when lonacc is called in
282: an internal redirect to /adm/switchserver (e.g., load-balancing following
283: successful authentication) -- no cookie set yet. For that particular case
284: simply skip the call to sso_login().
285:
286: returns OK if it was SSO and user was handled.
287: returns undef if not SSO or no means to handle the user.
288:
289: In the case where the session was started from /adm/launch/tiny/$domain/$id,
290: i.e., for a protected link, with launch from another CMS, and user information
291: is accepted from the LTI payload, then, if the user has privileged roles,
292: authentication will be required. If SSO authentication is with a username
293: and/or domain that differ from the username in the LTI payload and domain
294: in the launch URL, then $r->user() will be unset and /adm/relaunch will be
295: called.
296:
297: =cut
298:
299: sub sso_login {
300: my ($r,$handle,$username) = @_;
301:
302: if (($r->user eq '') || ($username ne '') || ($r->user eq 'public:public') ||
303: (defined($env{'user.name'}) && (defined($env{'user.domain'}))
304: && ($handle ne ''))) {
305: # not an SSO case or already logged in
306: return undef;
307: }
308:
309: my ($user) = ($r->user =~ m/^($match_username)$/);
310: if ($user eq '') {
311: return undef;
312: }
313:
314: my $query = $r->args;
315: my %form;
316: if ($query) {
317: my @items = ('role','symb','iptoken','origurl','ttoken',
318: 'ltoken','linkkey','logtoken','sso','lcssowin');
319: &Apache::loncommon::get_unprocessed_cgi($query,\@items);
320: foreach my $item (@items) {
321: if (defined($env{'form.'.$item})) {
322: $form{$item} = $env{'form.'.$item};
323: }
324: }
325: }
326:
327: my %sessiondata;
328: if ($form{'iptoken'}) {
329: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
330: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
331: unless ($sessiondata{'sessionserver'}) {
332: delete($form{'iptoken'});
333: }
334: }
335:
336: my ($linkprot,$linkprotuser,$linkprotexit,$linkkey,$deeplinkurl,
337: $linkprotpbid,$linkprotpburl);
338:
339: #
340: # If Shibboleth auth is in use, and a dual SSO and non-SSO login page
341: # is in use, then the query string will contain the logtoken item with
342: # a value set to the name of a .tmp file in /home/httpd/perl/tmp
343: # containing the url to display after authentication, and also,
344: # optionally, role and symb, or linkprot or linkkey (deep-link access).
345: #
346: # If Shibboleth auth is in use, but a dual log-in page is not in use,
347: # and the originally requested URL was /tiny/$domain/$id (i.e.,
348: # for deeplinking), then the query string will contain the sso item
349: # with a value set to the name of a .tmp file in /home/httpd/perl/tmp
350: # containing the url to display after authentication, and also,
351: # optionally, linkprot or linkkey (deep-link access).
352: #
353: # Otherwise the query string may contain role and symb, or if the
354: # originally requested URL was /tiny/$domain/$id (i.e. for deeplinking)
355: # then the query string may contain a ttoken item with a value set
356: # to the name of a .tmp file in /home/httpd/perl/tmp containing either
357: # linkprot or linkkey (deep-link access).
358: #
359: # If deep-linked, i.e., the originally requested URL was /tiny/$domain/$id
360: # the linkkey may have originally been sent in POSTed data, which will
361: # have been processed in lontrans.pm
362: #
363:
364: if ($form{'ttoken'}) {
365: my %info = &Apache::lonnet::tmpget($form{'ttoken'});
366: &Apache::lonnet::tmpdel($form{'ttoken'});
367: if ($info{'origurl'}) {
368: $form{'origurl'} = $info{'origurl'};
369: if ($form{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) {
370: $deeplinkurl = $form{'origurl'};
371: }
372: }
373: if ($info{'linkprot'}) {
374: $linkprot = $info{'linkprot'};
375: $linkprotuser = $info{'linkprotuser'};
376: $linkprotexit = $info{'linkprotexit'};
377: $linkprotpbid = $info{'linkprotpbid'};
378: $linkprotpburl = $info{'linkprotpburl'};
379: } elsif ($info{'linkkey'} ne '') {
380: $linkkey = $info{'linkkey'};
381: }
382: } elsif ($form{'logtoken'}) {
383: my ($firsturl,@rest);
384: my $lonhost = $r->dir_config('lonHostID');
385: my $tmpinfo = &Apache::lonnet::reply('tmpget:'.$form{'logtoken'},$lonhost);
386: my $delete = &Apache::lonnet::tmpdel($form{'logtoken'});
387: unless (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
388: ($tmpinfo eq 'no_such_host')) {
389: (undef,$firsturl,@rest) = split(/&/,$tmpinfo);
390: if ($firsturl ne '') {
391: $firsturl = &unescape($firsturl);
392: }
393: foreach my $item (@rest) {
394: my ($key,$value) = split(/=/,$item);
395: $form{$key} = &unescape($value);
396: }
397: if ($firsturl =~ m{^/tiny/$match_domain/\w+$}) {
398: $form{'origurl'} = $firsturl;
399: $deeplinkurl = $firsturl;
400: } elsif ($firsturl eq '/adm/email') {
401: $form{'origurl'} = $firsturl;
402: }
403: if ($form{'linkprot'}) {
404: $linkprot = $form{'linkprot'};
405: $linkprotuser = $form{'linkprotuser'};
406: $linkprotexit = $form{'linkprotexit'};
407: $linkprotpbid = $form{'linkprotpbid'};
408: $linkprotpburl = $form{'linkprotpburl'};
409: } elsif ($form{'linkkey'} ne '') {
410: $linkkey = $form{'linkkey'};
411: }
412: if ($form{'iptoken'}) {
413: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
414: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
415: }
416: }
417: } elsif ($form{'sso'}) {
418: my $lonhost = $r->dir_config('lonHostID');
419: my $info = &Apache::lonnet::reply('tmpget:'.$form{'sso'},$lonhost);
420: &Apache::lonnet::tmpdel($form{'sso'});
421: unless (($info=~/^error/) || ($info eq 'con_lost') ||
422: ($info eq 'no_such_host')) {
423: my ($firsturl,@rest)=split(/\&/,$info);
424: if ($firsturl ne '') {
425: $form{'origurl'} = &unescape($firsturl);
426: if ($form{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) {
427: $deeplinkurl = $form{'origurl'};
428: }
429: }
430: foreach my $item (@rest) {
431: my ($key,$value) = split(/=/,$item);
432: $form{$key} = &unescape($value);
433: }
434: if ($form{'linkprot'}) {
435: $linkprot = $form{'linkprot'};
436: $linkprotuser = $form{'linkprotuser'};
437: $linkprotexit = $form{'linkprotexit'};
438: $linkprotpbid = $form{'linkprotpbid'};
439: $linkprotpburl = $form{'linkprotpburl'};
440: } elsif ($form{'linkkey'} ne '') {
441: $linkkey = $form{'linkkey'};
442: }
443: }
444: } elsif ($form{'ltoken'}) {
445: my %link_info = &Apache::lonnet::tmpget($form{'ltoken'});
446: $linkprot = $link_info{'linkprot'};
447: if ($linkprot) {
448: if ($link_info{'linkprotuser'} ne '') {
449: $linkprotuser = $link_info{'linkprotuser'};
450: }
451: if ($link_info{'linkprotexit'} ne '') {
452: $linkprotexit = $link_info{'linkprotexit'};
453: }
454: if ($link_info{'linkprotpbid'} ne '') {
455: $linkprotpbid = $link_info{'linkprotpbid'};
456: }
457: if ($link_info{'linkprotpburl'} ne '') {
458: $linkprotpburl = $link_info{'linkprotpburl'};
459: }
460: }
461: my $delete = &Apache::lonnet::tmpdel($form{'ltoken'});
462: delete($form{'ltoken'});
463: if ($form{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) {
464: $deeplinkurl = $form{'origurl'};
465: }
466: } elsif ($form{'linkkey'} ne '') {
467: $linkkey = $form{'linkkey'};
468: }
469:
470: my $domain = $r->dir_config('lonSSOUserDomain');
471: if ($domain eq '') {
472: $domain = $r->dir_config('lonDefDomain');
473: }
474: if (($deeplinkurl) && ($linkprot) && ($linkprotuser ne '')) {
475: unless ($linkprotuser eq $user.':'.$domain) {
476: $r->user();
477: my %data = (
478: origurl => $deeplinkurl,
479: linkprot => $linkprot,
480: linkprotuser => $linkprotuser,
481: linkprotexit => $linkprotexit,
482: linkprotpbid => $linkprotpbid,
483: linkprotpburl => $linkprotpburl,
484: );
485: if ($env{'form.lcssowin'}) {
486: $data{'lcssowin'} = $env{'form.lcssowin'};
487: }
488: my $token = &Apache::lonnet::tmpput(\%data,$r->dir_config('lonHostID'),'link');
489: unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) ||
490: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
491: $r->internal_redirect('/adm/relaunch?rtoken='.$token);
492: $r->set_handlers('PerlHandler'=> undef);
493: return OK;
494: }
495: }
496: }
497: my $home=&Apache::lonnet::homeserver($user,$domain);
498: if ($home !~ /(con_lost|no_host|no_such_host)/) {
499: &Apache::lonnet::logthis(" SSO authorized user $user ");
500: my ($is_balancer,$otherserver,$hosthere);
501: if ($form{'iptoken'}) {
502: if (($sessiondata{'domain'} eq $domain) &&
503: ($sessiondata{'username'} eq $user)) {
504: $hosthere = 1;
505: }
506: }
507: unless ($hosthere) {
508: ($is_balancer,$otherserver) =
509: &Apache::lonnet::check_loadbalancing($user,$domain,'login');
510: if ($is_balancer) {
511: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
512: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
513: if (($found_server) && ($balancer_cookie =~ /^\Q$domain\E_\Q$user\E_/)) {
514: $otherserver = $found_server;
515: } elsif ($otherserver eq '') {
516: my $lowest_load;
517: ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($domain);
518: if ($lowest_load > 100) {
519: $otherserver = &Apache::lonnet::spareserver($r,$lowest_load,$lowest_load,1,$domain);
520: }
521: if ($otherserver ne '') {
522: my @hosts = &Apache::lonnet::current_machine_ids();
523: if (grep(/^\Q$otherserver\E$/,@hosts)) {
524: $hosthere = $otherserver;
525: }
526: }
527: }
528: }
529: }
530: if (($is_balancer) && (!$hosthere)) {
531: # login but immediately go to switch server to find us a new
532: # machine
533: &Apache::lonauth::success($r,$user,$domain,$home,'noredirect');
534: foreach my $item (keys(%form)) {
535: $env{'form.'.$item} = $form{$item};
536: }
537: unless (($form{'symb'}) || ($form{'origurl'})) {
538: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
539: $env{'form.origurl'} = $r->uri;
540: }
541: }
542: if (($r->uri eq '/adm/sso') && ($form{'origurl'} =~ m{^/+tiny/+$match_domain/+\w+$})) {
543: $env{'request.deeplink.login'} = $form{'origurl'};
544: } elsif ($r->uri =~ m{^/+tiny/+$match_domain/+\w+$}) {
545: $env{'request.deeplink.login'} = $r->uri;
546: }
547: if ($env{'request.deeplink.login'}) {
548: if ($linkprot) {
549: $env{'request.linkprot'} = $linkprot;
550: if ($linkprotuser ne '') {
551: $env{'request.linkprotuser'} = $linkprotuser;
552: }
553: if ($linkprotexit ne '') {
554: $env{'request.linkprotexit'} = $linkprotexit;
555: }
556: if ($linkprotpbid ne '') {
557: $env{'request.linkprotpbid'} = $linkprotpbid;
558: }
559: if ($linkprotpburl ne '') {
560: $env{'request.linkprotpburl'} = $linkprotpburl;
561: }
562: } elsif ($linkkey ne '') {
563: $env{'request.linkkey'} = $linkkey;
564: }
565: }
566: if (($r->uri eq '/adm/sso') && ($form{'origurl'} eq '/adm/email')) {
567: if ($form{'display'} && ($env{'form.mailrecip'} eq $user.':'.$domain)) {
568: $env{'request.display'} = $form{'display'};
569: $env{'request.mailrecip'} = $env{'form.mailrecip'};
570: }
571: }
572: $env{'request.sso.login'} = 1;
573: if (defined($r->dir_config("lonSSOReloginServer"))) {
574: $env{'request.sso.reloginserver'} =
575: $r->dir_config('lonSSOReloginServer');
576: }
577: my $redirecturl = '/adm/switchserver';
578: if ($otherserver ne '') {
579: $redirecturl .= '?otherserver='.$otherserver;
580: }
581: if ($form{'lcssowin'}) {
582: $redirecturl .= (($redirecturl=~/\?/)?'&':'?') . 'lcssowin=1';
583: }
584: $r->internal_redirect($redirecturl);
585: $r->set_handlers('PerlHandler'=> undef);
586: } else {
587: # need to login them in, so generate the need data that
588: # migrate expects to do login
589: my $ip = &Apache::lonnet::get_requestor_ip($r);
590: my %info=('ip' => $ip,
591: 'domain' => $domain,
592: 'username' => $user,
593: 'server' => $r->dir_config('lonHostID'),
594: 'sso.login' => 1
595: );
596: foreach my $item ('role','symb','iptoken','origurl','lcssowin') {
597: if (exists($form{$item})) {
598: $info{$item} = $form{$item};
599: } elsif ($sessiondata{$item} ne '') {
600: $info{$item} = $sessiondata{$item};
601: }
602: }
603: unless (($info{'symb'}) || ($info{'origurl'})) {
604: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
605: $info{'origurl'} = $r->uri;
606: }
607: }
608: if (($r->uri eq '/adm/sso') && ($form{'origurl'} =~ m{^/+tiny/+$match_domain/+\w+$})) {
609: $info{'deeplink.login'} = $form{'origurl'};
610: } elsif ($r->uri =~ m{^/+tiny/+$match_domain/+\w+$}) {
611: $info{'deeplink.login'} = $r->uri;
612: }
613: if ($info{'deeplink.login'}) {
614: if ($linkprot) {
615: $info{'linkprot'} = $linkprot;
616: if ($linkprotuser ne '') {
617: $info{'linkprotuser'} = $linkprotuser;
618: }
619: if ($linkprotexit ne '') {
620: $info{'linkprotexit'} = $linkprotexit;
621: }
622: if ($linkprotpbid ne '') {
623: $info{'linkprotpbid'} = $linkprotpbid;
624: }
625: if ($linkprotpburl ne '') {
626: $info{'linkprotpburl'} = $linkprotpburl;
627: }
628: } elsif ($linkkey ne '') {
629: $info{'linkkey'} = $linkkey;
630: }
631: }
632: if (($r->uri eq '/adm/sso') && ($form{'origurl'} eq '/adm/email')) {
633: if ($form{'display'} && ($form{'mailrecip'} eq $user.':'.$domain)) {
634: $info{'display'} = &escape($form{'display'});
635: $info{'mailrecip'} = &escape($form{'mailrecip'});
636: }
637: }
638: if ($r->dir_config("ssodirecturl") == 1) {
639: $info{'origurl'} = $r->uri;
640: }
641: if (defined($r->dir_config("lonSSOReloginServer"))) {
642: $info{'sso.reloginserver'} =
643: $r->dir_config('lonSSOReloginServer');
644: }
645: if (($is_balancer) && ($hosthere)) {
646: $info{'noloadbalance'} = $hosthere;
647: }
648: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'sso');
649: $env{'form.token'} = $token;
650: $r->internal_redirect('/adm/migrateuser');
651: $r->set_handlers('PerlHandler'=> undef);
652: }
653: return OK;
654: } else {
655: &Apache::lonnet::logthis(" SSO authorized unknown user $user ");
656: my @cancreate;
657: my %domconfig =
658: &Apache::lonnet::get_dom('configuration',['usercreation'],$domain);
659: if (ref($domconfig{'usercreation'}) eq 'HASH') {
660: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
661: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
662: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
663: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
664: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
665: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
666: }
667: }
668: }
669: if ((grep(/^sso$/,@cancreate)) || (defined($r->dir_config('lonSSOUserUnknownRedirect')))) {
670: $r->subprocess_env->set('SSOUserUnknown' => $user);
671: $r->subprocess_env->set('SSOUserDomain' => $domain);
672: if (grep(/^sso$/,@cancreate)) {
673: #FIXME - need to preserve origurl, role and symb, or linkprot or linkkey for use after account
674: # creation. If lcssowin is 1, createaccount needs to close pop-up and display in main window.
675: $r->set_handlers('PerlHandler'=> [\&Apache::createaccount::handler]);
676: $r->handler('perl-script');
677: } else {
678: $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect'));
679: $r->set_handlers('PerlHandler'=> undef);
680: }
681: return OK;
682: }
683: }
684: return undef;
685: }
686:
687: sub handler {
688: my $r = shift;
689: my $requrl=$r->uri;
690:
691: if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) {
692: return OK;
693: }
694:
695: if (&Apache::lonnet::is_domainimage($requrl)) {
696: return OK;
697: }
698:
699: my %user;
700: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
701:
702: unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) {
703: my $result = &sso_login($r,$handle,$user{'name'});
704: if (defined($result)) {
705: return $result;
706: }
707: }
708:
709: my ($is_balancer,$otherserver);
710:
711: if ($handle eq '') {
712: unless ((($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) ||
713: ($requrl =~ m{^/public/$match_domain/$match_courseid/syllabus}) ||
714: ($requrl =~ m{^/adm/help/}) || ($requrl eq '/adm/sso') ||
715: ($requrl =~ m{^/res/$match_domain/$match_username/})) {
716: $r->log_reason("Cookie not valid", $r->filename);
717: }
718: } elsif ($handle ne '') {
719:
720: # ------------------------------------------------------ Initialize Environment
721: my $lonidsdir=$r->dir_config('lonIDsDir');
722: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
723:
724: # --------------------------------------------------------- Initialize Language
725:
726: &Apache::lonlocal::get_language_handle($r);
727:
728: }
729:
730: # -------------------------------------------------- Should be a valid user now
731: if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') {
732: # -------------------------------------------------------------- Resource State
733:
734: my ($cdom,$cnum);
735: if ($env{'request.course.id'}) {
736: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
737: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
738: }
739: if ($requrl=~/^\/+(res|uploaded)\//) {
740: $env{'request.state'} = "published";
741: } else {
742: $env{'request.state'} = 'unknown';
743: }
744: $env{'request.filename'} = $r->filename;
745: $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);
746: my ($suppext,$checkabsolute);
747: if ($requrl =~ m{^/adm/wrapper/ext/}) {
748: my $query = $r->args;
749: if ($query) {
750: my $preserved;
751: foreach my $pair (split(/&/,$query)) {
752: my ($name, $value) = split(/=/,$pair);
753: unless (($name eq 'symb') || ($name eq 'usehttp')) {
754: $preserved .= $pair.'&';
755: }
756: if (($env{'request.course.id'}) && ($name eq 'folderpath')) {
757: if ($value =~ /^supplemental/) {
758: $suppext = 1;
759: }
760: }
761: }
762: $preserved =~ s/\&$//;
763: if ($preserved) {
764: $env{'request.external.querystring'} = $preserved;
765: }
766: }
767: if ($env{'request.course.id'}) {
768: $checkabsolute = 1;
769: }
770: } elsif ($env{'request.course.id'} &&
771: (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) ||
772: ($requrl eq "/public/$cdom/$cnum/syllabus") ||
773: ($requrl =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}))) {
774: my $query = $r->args;
775: if ($query) {
776: foreach my $pair (split(/&/,$query)) {
777: my ($name, $value) = split(/=/,$pair);
778: if ($name eq 'folderpath') {
779: if ($value =~ /^supplemental/) {
780: $suppext = 1;
781: }
782: last;
783: }
784: }
785: }
786: if ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}) {
787: $checkabsolute = 1;
788: }
789: }
790: if ($checkabsolute) {
791: my $hostname = $r->hostname();
792: my $lonhost = &Apache::lonnet::host_from_dns($hostname);
793: if ($lonhost) {
794: my $actual = &Apache::lonnet::absolute_url($hostname,1,1);
795: my $exphostname = &Apache::lonnet::hostname($lonhost);
796: my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
797: unless ($actual eq $expected) {
798: $env{'request.use_absolute'} = $expected;
799: }
800: }
801: }
802: # -------------------------------------------------------- Load POST parameters
803:
804: &Apache::lonacc::get_posted_cgi($r);
805:
806: # ------------------------------------------------------ Check if load balancer
807:
808: my $checkexempt;
809: if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) {
810: if ($env{'user.loadbalcheck.time'} + 600 > time) {
811: $checkexempt = 1;
812: }
813: }
814: if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) {
815: $checkexempt = 1;
816: }
817: unless (($checkexempt) || (($requrl eq '/adm/switchserver') && (!$r->is_initial_req()))) {
818: ($is_balancer,$otherserver) =
819: &Apache::lonnet::check_loadbalancing($env{'user.name'},
820: $env{'user.domain'});
821: if ($is_balancer) {
822: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
823: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
824: if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
825: $otherserver = $found_server;
826: }
827: unless ($requrl eq '/adm/switchserver') {
828: $r->set_handlers('PerlResponseHandler'=>
829: [\&Apache::switchserver::handler]);
830: }
831: if ($otherserver ne '') {
832: $env{'form.otherserver'} = $otherserver;
833: }
834: unless (($env{'form.origurl'}) || ($r->uri eq '/adm/roles') ||
835: ($r->uri eq '/adm/switchserver') || ($r->uri eq '/adm/sso')) {
836: $env{'form.origurl'} = $r->uri;
837: }
838: }
839: }
840: if ($requrl=~m{^/+tiny/+$match_domain/+\w+$}) {
841: if ($r->args) {
842: &Apache::loncommon::get_unprocessed_cgi($r->args,['ttoken']);
843: if (defined($env{'form.ttoken'})) {
844: my %info = &Apache::lonnet::tmpget($env{'form.ttoken'});
845: if (($info{'origurl'} ne '') && ($info{'origurl'} eq $requrl)) {
846: my %data;
847: if (($info{'linkprotuser'} ne '') && ($info{'linkprot'}) &&
848: ($info{'linkprotuser'} ne $env{'user.name'}.':'.$env{'user.domain'})) {
849: %data = (
850: origurl => $requrl,
851: linkprot => $info{'linkprot'},
852: linkprotuser => $info{'linkprotuser'},
853: linkprotexit => $info{'linkprotexit'},
854: linkprotpbid => $info{'linkprotpbid'},
855: linkprotpburl => $info{'linkprotpburl'},
856: );
857: } elsif ($info{'ltoken'} ne '') {
858: my %ltoken_info = &Apache::lonnet::tmpget($info{'ltoken'});
859: if (($ltoken_info{'linkprotuser'} ne '') && ($ltoken_info{'linkprot'}) &&
860: ($ltoken_info{'linkprotuser'} ne $env{'user.name'}.':'.$env{'user.domain'})) {
861: %data = (
862: origurl => $requrl,
863: linkprot => $ltoken_info{'linkprot'},
864: linkprotuser => $ltoken_info{'linkprotuser'},
865: linkprotexit => $ltoken_info{'linkprotexit'},
866: linkprotpbid => $ltoken_info{'linkprotpbid'},
867: linkprotpburl => $ltoken_info{'linkprotpburl'},
868: );
869: }
870: }
871: if (keys(%data)) {
872: my $delete = &Apache::lonnet::tmpdel($env{'form.ttoken'});
873: if ($info{'ltoken'} ne '') {
874: my $delete = &Apache::lonnet::tmpdel($info{'ltoken'});
875: }
876: my $token =
877: &Apache::lonnet::tmpput(\%data,$r->dir_config('lonHostID'),'retry');
878: unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) ||
879: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
880: $r->internal_redirect('/adm/relaunch?rtoken='.$token);
881: $r->set_handlers('PerlHandler'=> undef);
882: return OK;
883: }
884: }
885: }
886: }
887: }
888: if ($env{'user.name'} eq 'public' &&
889: $env{'user.domain'} eq 'public') {
890: $env{'request.firsturl'}=$requrl;
891: return FORBIDDEN;
892: }
893: return OK;
894: } elsif (($env{'request.course.id'}) &&
895: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) &&
896: ($requrl=~m{^(/daxeopen|)(/uploaded/$cdom/$cnum/(?:docs|supplemental)/(?:default|\d+)/\d+/)([^/]+|)$})) {
897: my ($daxe,$path,$file) = ($1,$2,$3);
898: my $referrer;
899: unless ($daxe) {
900: $referrer = $r->headers_in->{'Referer'};
901: }
902: if (($daxe) || ($referrer =~ m{\Qfile=/daxeopen$path\E})) {
903: return OK;
904: }
905: }
906: # ---------------------------------------------------------------- Check access
907: my $now = time;
908: my ($check_symb,$check_access,$check_block,$access,$poss_symb);
909: if ($requrl !~ m{^/(?:adm|public|(?:prt|zip)spool)/}
910: || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) {
911: $check_access = 1;
912: }
913: if ((!$check_access) && ($env{'request.course.id'})) {
914: if (($requrl eq '/adm/viewclasslist') ||
915: ($requrl =~ m{^(/adm/wrapper|)\Q/uploaded/$cdom/$cnum/docs/\E}) ||
916: ($requrl =~ m{^/adm/.*/aboutme$}) ||
917: ($requrl=~m{^/adm/coursedocs/showdoc/}) ||
918: ($requrl=~m{^(/adm/wrapper|)/adm/$cdom/$cnum/\d+/ext\.tool$})) {
919: $check_block = 1;
920: }
921: }
922: if (($env{'request.course.id'}) && (!$suppext)) {
923: $requrl=~/\.(\w+)$/;
924: if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
925: ($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) ||
926: ($requrl=~/^\/adm\/wrapper\//) ||
927: ($requrl=~m|^/adm/coursedocs/showdoc/|) ||
928: ($requrl=~m|\.problem/smpedit$|) ||
929: ($requrl=~/^\/public\/.*\/syllabus$/) ||
930: ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) ||
931: ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/) ||
932: ($requrl=~m{^/adm/$cdom/$cnum/\d+/ext\.tool$})) {
933: $check_symb = 1;
934: }
935: }
936: if (($check_access) || ($check_block)) {
937: if ($check_symb) {
938: if ($env{'form.symb'}) {
939: $poss_symb=&Apache::lonnet::symbclean($env{'form.symb'});
940: } elsif (($env{'request.course.id'}) && ($r->args ne '')) {
941: my $query = $r->args;
942: foreach my $pair (split(/&/,$query)) {
943: my ($name, $value) = split(/=/,$pair);
944: $name = &unescape($name);
945: $value =~ tr/+/ /;
946: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
947: if ($name eq 'symb') {
948: $poss_symb = &Apache::lonnet::symbclean($value);
949: last;
950: }
951: }
952: }
953: if ($poss_symb) {
954: my ($possmap,$resid,$url)=&Apache::lonnet::decode_symb($poss_symb);
955: $url = &Apache::lonnet::clutter($url);
956: my $toplevelmap = $env{'course.'.$env{'request.course.id'}.'.url'};
957: unless (($url eq $requrl) && (($possmap eq $toplevelmap) ||
958: (&Apache::lonnet::is_on_map($possmap)))) {
959: undef($poss_symb);
960: }
961: if ($poss_symb) {
962: if ((!$env{'request.role.adv'}) && ($env{'acc.randomout'}) &&
963: ($env{'acc.randomout'}=~/\&\Q$poss_symb\E\&/)) {
964: undef($poss_symb);
965: } elsif ((!$env{'request.role.adv'}) && ($env{'acc.deeplinkout'}) &&
966: ($env{'acc.deeplinkout'}=~/\&\Q$poss_symb\E\&/)) {
967: undef($poss_symb);
968: }
969: }
970: }
971: if ($poss_symb) {
972: $access=&Apache::lonnet::allowed('bre',$requrl,$poss_symb);
973: } else {
974: $access=&Apache::lonnet::allowed('bre',$requrl,'','','','',1);
975: }
976: } else {
977: my $nodeeplinkcheck;
978: if ($check_access) {
979: if ($requrl =~ m{^/daxeopen/priv/}) {
980: $nodeeplinkcheck = 1;
981: } elsif ($requrl =~ /\.(sequence|page)$/) {
982: unless ($env{'form.navmap'}) {
983: if ($r->args ne '') {
984: &Apache::loncommon::get_unprocessed_cgi($r->args,['navmap']);
985: unless ($env{'form.navmap'}) {
986: $nodeeplinkcheck = 1;
987: }
988: }
989: }
990: }
991: }
992: my $clientip = &Apache::lonnet::get_requestor_ip($r);
993: $access=&Apache::lonnet::allowed('bre',$requrl,'','',$clientip,'','',$nodeeplinkcheck);
994: if (($requrl =~ m{^/daxeopen/priv/}) && ($access eq '')) {
995: $env{'request.editurl'}=$requrl;
996: }
997: }
998: }
999: if ($check_block) {
1000: if ($access eq 'B') {
1001: if ($poss_symb) {
1002: if (&Apache::lonnet::symbverify($poss_symb,$requrl)) {
1003: $env{'request.symb'} = $poss_symb;
1004: }
1005: }
1006: &Apache::blockedaccess::setup_handler($r);
1007: return OK;
1008: }
1009: } elsif ($check_access) {
1010: if ($handle eq '') {
1011: unless ($access eq 'F') {
1012: if ($requrl =~ m{^/res/$match_domain/$match_username/}) {
1013: $r->log_reason("Cookie not valid", $r->filename);
1014: }
1015: }
1016: }
1017: if ($access eq '1') {
1018: $env{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
1019: return HTTP_NOT_ACCEPTABLE;
1020: }
1021: if ($access eq 'A') {
1022: &Apache::restrictedaccess::setup_handler($r);
1023: return OK;
1024: }
1025: if ($access eq 'B') {
1026: if ($poss_symb) {
1027: if (&Apache::lonnet::symbverify($poss_symb,$requrl)) {
1028: $env{'request.symb'} = $poss_symb;
1029: }
1030: }
1031: &Apache::blockedaccess::setup_handler($r);
1032: return OK;
1033: }
1034: if ($access eq 'D') {
1035: &Apache::lonprotected::setup_handler($r);
1036: return OK;
1037: }
1038: if (($access ne '2') && ($access ne 'F')) {
1039: if ($requrl =~ m{^/res/}) {
1040: $access = &Apache::lonnet::allowed('bro',$requrl);
1041: if ($access ne 'F') {
1042: if ($requrl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
1043: $access = &Apache::lonnet::allowed('bre','/res/lib/templates/simpleproblem.problem');
1044: if ($access ne 'F') {
1045: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1046: return HTTP_NOT_ACCEPTABLE;
1047: }
1048: } else {
1049: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1050: return HTTP_NOT_ACCEPTABLE;
1051: }
1052: }
1053: } elsif (($handle =~ /^publicuser_\d+$/) && (&Apache::lonnet::is_portfolio_url($requrl))) {
1054: my $clientip = &Apache::lonnet::get_requestor_ip($r);
1055: if (&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip) ne 'F') {
1056: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1057: return HTTP_NOT_ACCEPTABLE;
1058: }
1059: } else {
1060: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1061: return HTTP_NOT_ACCEPTABLE;
1062: }
1063: }
1064: }
1065: if ($requrl =~ m|^/prtspool/|) {
1066: my $start='/prtspool/'.$env{'user.name'}.'_'.
1067: $env{'user.domain'};
1068: if ($requrl !~ /^\Q$start\E/) {
1069: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1070: return HTTP_NOT_ACCEPTABLE;
1071: }
1072: }
1073: if ($requrl =~ m|^/zipspool/|) {
1074: my $start='/zipspool/zipout/'.$env{'user.name'}.":".
1075: $env{'user.domain'};
1076: if ($requrl !~ /^\Q$start\E/) {
1077: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1078: return HTTP_NOT_ACCEPTABLE;
1079: }
1080: }
1081: if ($env{'user.name'} eq 'public' &&
1082: $env{'user.domain'} eq 'public' &&
1083: $requrl !~ m{^/+(res|public|uploaded)/} &&
1084: $requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x &&
1085: $requrl !~ m{^/adm/blockingstatus/.*$} &&
1086: $requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) {
1087: $env{'request.querystring'}=$r->args;
1088: $env{'request.firsturl'}=$requrl;
1089: return FORBIDDEN;
1090: }
1091: # ------------------------------------------------------------- This is allowed
1092: if ($env{'request.course.id'}) {
1093: &Apache::lonnet::countacc($requrl);
1094: my $query=$r->args;
1095: if ($check_symb) {
1096: # ------------------------------------- This is serious stuff, get symb and log
1097: my $symb;
1098: if ($query) {
1099: &Apache::loncommon::get_unprocessed_cgi($query,['symb','folderpath']);
1100: }
1101: if ($env{'form.symb'}) {
1102: $symb=&Apache::lonnet::symbclean($env{'form.symb'});
1103: if (($requrl eq '/adm/navmaps') ||
1104: ($requrl =~ m{^/adm/wrapper/}) ||
1105: ($requrl =~ m{^/adm/coursedocs/showdoc/})) {
1106: unless (&Apache::lonnet::symbverify($symb,$requrl)) {
1107: if (&Apache::lonnet::is_on_map($requrl)) {
1108: $symb = &Apache::lonnet::symbread($requrl);
1109: unless (&Apache::lonnet::symbverify($symb,$requrl)) {
1110: undef($symb);
1111: }
1112: }
1113: }
1114: if ($symb) {
1115: if ($requrl eq '/adm/navmaps') {
1116: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
1117: &Apache::lonnet::symblist($map,$murl => [$murl,$mid]);
1118: } elsif (($requrl =~ m{^/adm/wrapper/}) ||
1119: ($requrl =~ m{^/adm/coursedocs/showdoc/})) {
1120: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
1121: if ($map =~ /\.page$/) {
1122: my $mapsymb = &Apache::lonnet::symbread($map);
1123: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
1124: }
1125: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
1126: 'last_known' =>[$murl,$mid]);
1127: }
1128: }
1129: } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) ||
1130: (($requrl=~m|(.*)/smpedit$|) &&
1131: &Apache::lonnet::symbverify($symb,$1)) ||
1132: (($requrl=~m|(.*/aboutme)/portfolio$|) &&
1133: &Apache::lonnet::symbverify($symb,$1))) {
1134: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
1135: if (($map =~ /\.page$/) && ($requrl !~ /\.page$/)) {
1136: my $mapsymb = &Apache::lonnet::symbread($map);
1137: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
1138: }
1139: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
1140: 'last_known' =>[$murl,$mid]);
1141: } else {
1142: $r->log_reason('Invalid symb for '.$requrl.': '.
1143: $symb);
1144: $env{'user.error.msg'}=
1145: "$requrl:bre:1:1:Invalid Access";
1146: return HTTP_NOT_ACCEPTABLE;
1147: }
1148: } else {
1149: if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) {
1150: $requrl = $1;
1151: }
1152: $symb=&Apache::lonnet::symbread($requrl);
1153: if (&Apache::lonnet::is_on_map($requrl) && $symb) {
1154: my ($encstate,$invalidsymb);
1155: unless (&Apache::lonnet::symbverify($symb,$requrl,\$encstate)) {
1156: $invalidsymb = 1;
1157: #
1158: # If $env{'request.enc'} inconsistent with encryption expected for $symb
1159: # retrieved by lonnet::symbread(), call again to check for an instance of
1160: # $requrl in the course for which expected encryption matches request.enc.
1161: # If symb for different instance passes lonnet::symbverify(), use that as
1162: # the symb for $requrl and call &Apache::lonnet::allowed() for that symb.
1163: # Report invalid symb if there is no other symb. Redirect to /adm/ambiguous
1164: # if multiple possible symbs consistent with request.enc available for $requrl.
1165: #
1166: if (($env{'request.enc'} && !$encstate) || (!$env{'request.enc'} && $encstate)) {
1167: my %possibles;
1168: my $nocache = 1;
1169: my $oldsymb = $symb;
1170: $symb = &Apache::lonnet::symbread($requrl,'','','',\%possibles,$nocache);
1171: if (($symb) && ($symb ne $oldsymb)) {
1172: if (&Apache::lonnet::symbverify($symb,$requrl)) {
1173: my $access=&Apache::lonnet::allowed('bre',$requrl,$symb);
1174: if ($access eq 'B') {
1175: $env{'request.symb'} = $symb;
1176: &Apache::blockedaccess::setup_handler($r);
1177: return OK;
1178: } elsif (($access eq '2') || ($access eq 'F')) {
1179: $invalidsymb = '';
1180: }
1181: }
1182: } elsif (keys(%possibles) > 1) {
1183: $r->internal_redirect('/adm/ambiguous');
1184: return OK;
1185: }
1186: }
1187: if ($invalidsymb) {
1188: if ($requrl eq '/adm/navmaps') {
1189: undef($symb);
1190: } else {
1191: $r->log_reason('Invalid symb for '.$requrl.': '.$symb);
1192: $env{'user.error.msg'}=
1193: "$requrl:bre:1:1:Invalid Access";
1194: return HTTP_NOT_ACCEPTABLE;
1195: }
1196: }
1197: }
1198: }
1199: if ($symb) {
1200: my ($map,$mid,$murl)=
1201: &Apache::lonnet::decode_symb($symb);
1202: if ($requrl eq '/adm/navmaps') {
1203: &Apache::lonnet::symblist($map,$murl =>[$murl,$mid]);
1204: } else {
1205: if (($map =~ /\.page$/) && ($requrl !~ /\.page$/)) {
1206: my $mapsymb = &Apache::lonnet::symbread($map);
1207: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
1208: }
1209: &Apache::lonnet::symblist($map,$murl =>[$murl,$mid],
1210: 'last_known' =>[$murl,$mid]);
1211: }
1212: }
1213: }
1214: $env{'request.symb'}=$symb;
1215: if (($env{'request.symbread.cached.'}) && ($env{'request.symbread.cached.'} ne $symb)) {
1216: $env{'request.symbread.cached.'} = $symb;
1217: }
1218: &Apache::lonnet::courseacclog($symb);
1219: } else {
1220: # ------------------------------------------------------- This is other content
1221: &Apache::lonnet::courseacclog($requrl);
1222: }
1223: if ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/.+\.html?$}) {
1224: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1225: if ($query) {
1226: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit']);
1227: if ($env{'form.forceedit'}) {
1228: $env{'request.state'} = 'edit';
1229: }
1230: }
1231: }
1232: } elsif ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/portfolio/syllabus/.+\.html?$}) {
1233: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1234: if ($query) {
1235: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit','editmode']);
1236: if (($env{'form.forceedit'}) || ($env{'form.editmode'})) {
1237: $env{'request.state'} = 'edit';
1238: }
1239: }
1240: }
1241: }
1242: }
1243: return OK;
1244: } else {
1245: my $defdom=$r->dir_config('lonDefDomain');
1246: ($is_balancer,$otherserver) =
1247: &Apache::lonnet::check_loadbalancing(undef,$defdom);
1248: if ($is_balancer) {
1249: $r->set_handlers('PerlResponseHandler'=>
1250: [\&Apache::switchserver::handler]);
1251: if ($otherserver ne '') {
1252: $env{'form.otherserver'} = $otherserver;
1253: }
1254: }
1255: }
1256: # -------------------------------------------- See if this is a public resource
1257: if ($requrl=~m|^/+adm/+help/+|) {
1258: return OK;
1259: }
1260: # ------------------------------------ See if this is a viewable portfolio file
1261: if (&Apache::lonnet::is_portfolio_url($requrl)) {
1262: my $clientip = &Apache::lonnet::get_requestor_ip($r);
1263: my $access=&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip);
1264: if ($access eq 'A') {
1265: &Apache::restrictedaccess::setup_handler($r);
1266: return OK;
1267: }
1268: if (($access ne '2') && ($access ne 'F')) {
1269: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
1270: return HTTP_NOT_ACCEPTABLE;
1271: }
1272: }
1273:
1274: # -------------------------------------------------------------- Not authorized
1275: $requrl=~/\.(\w+)$/;
1276: # if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
1277: # ($requrl=~/^\/adm\/(roles|logout|email|menu|remote)/) ||
1278: # ($requrl=~m|^/prtspool/|)) {
1279: # -------------------------- Store where they wanted to go and get login screen
1280: $env{'request.querystring'}=$r->args;
1281: $env{'request.firsturl'}=$requrl;
1282: return FORBIDDEN;
1283: # } else {
1284: # --------------------------------------------------------------------- Goodbye
1285: # return HTTP_BAD_REQUEST;
1286: # }
1287: }
1288:
1289: 1;
1290: __END__
1291:
1292: =pod
1293:
1294: =back
1295:
1296: =cut
1297:
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