1: # The LearningOnline Network
2: # Cookie Based Access Handler
3: #
4: # $Id: lonacc.pm,v 1.166 2017/04/04 02:59:40 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 Fcntl qw(:flock);
106: use LONCAPA qw(:DEFAULT :match);
107:
108: sub cleanup {
109: my ($r)=@_;
110: if (! $r->is_initial_req()) { return DECLINED; }
111: &Apache::lonnet::save_cache();
112: return OK;
113: }
114:
115: sub goodbye {
116: my ($r)=@_;
117: &Apache::lonnet::goodbye();
118: return DONE;
119: }
120:
121: ###############################################
122:
123: sub get_posted_cgi {
124: my ($r,$fields) = @_;
125:
126: my $buffer;
127: if ($r->header_in('Content-length')) {
128: $r->read($buffer,$r->header_in('Content-length'),0);
129: }
130: my $content_type = $r->header_in('Content-type');
131: if ($content_type !~ m{^multipart/form-data}) {
132: my @pairs=split(/&/,$buffer);
133: my $pair;
134: foreach $pair (@pairs) {
135: my ($name,$value) = split(/=/,$pair);
136: $value =~ tr/+/ /;
137: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
138: $name =~ tr/+/ /;
139: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
140: if (ref($fields) eq 'ARRAY') {
141: next if (!grep(/^\Q$name\E$/,@{$fields}));
142: }
143: &Apache::loncommon::add_to_env("form.$name",$value);
144: }
145: } else {
146: my ($contentsep) = ($content_type =~ /boundary=\"?([^\";,]+)\"?/);
147: my @lines = split (/\n/,$buffer);
148: my $name='';
149: my $value='';
150: my $fname='';
151: my $fmime='';
152: my $i;
153: for ($i=0;$i<=$#lines;$i++) {
154: if ($lines[$i]=~/^--\Q$contentsep\E/) {
155: if ($name) {
156: chomp($value);
157: if (($r->uri eq '/adm/portfolio') &&
158: ($name eq 'uploaddoc')) {
159: if (length($value) == 1) {
160: $value=~s/[\r\n]$//;
161: }
162: } elsif ($fname =~ /\.(xls|doc|ppt)x$/i) {
163: $value=~s/[\r\n]$//;
164: }
165: if (ref($fields) eq 'ARRAY') {
166: next if (!grep(/^\Q$name\E$/,@{$fields}));
167: }
168: if ($fname) {
169: if ($env{'form.symb'} ne '') {
170: my $size = (length($value))/(1024.0 * 1024.0);
171: if (&upload_size_allowed($name,$size,$fname) eq 'ok') {
172: $env{"form.$name.filename"}=$fname;
173: $env{"form.$name.mimetype"}=$fmime;
174: &Apache::loncommon::add_to_env("form.$name",$value);
175: }
176: } else {
177: $env{"form.$name.filename"}=$fname;
178: $env{"form.$name.mimetype"}=$fmime;
179: &Apache::loncommon::add_to_env("form.$name",$value);
180: }
181: } else {
182: $value=~s/\s+$//s;
183: &Apache::loncommon::add_to_env("form.$name",$value);
184: }
185: }
186: if ($i<$#lines) {
187: $i++;
188: $lines[$i]=~
189: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
190: $name=$1;
191: $value='';
192: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
193: $fname=$1;
194: if
195: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
196: $fmime=$1;
197: $i++;
198: } else {
199: $fmime='';
200: }
201: } else {
202: $fname='';
203: $fmime='';
204: }
205: if ($i<$#lines && $lines[$i+1]=~/^Content\-Type\:\s*([\w\-\/]+)/i) {
206: # TODO: something with $1 !
207: $i++;
208: }
209: if ($i<$#lines && $lines[$i+1]=~/^Content\-transfer\-encoding\:\s*([\w\-\/]+)/i) {
210: # TODO: something with $1 !
211: $i++;
212: }
213: $i++;
214: }
215: } else {
216: $value.=$lines[$i]."\n";
217: }
218: }
219: }
220: #
221: # Digested POSTed values
222: #
223: # Remember the way this was originally done (GET or POST)
224: #
225: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
226: #
227: # There may also be stuff in the query string
228: # Tell subsequent handlers that this was GET, not POST, so they can access query string.
229: # Also, unset POSTed content length to cover all tracks.
230: #
231:
232: $r->method_number(M_GET);
233:
234: $r->method('GET');
235: $r->headers_in->unset('Content-length');
236: }
237:
238: =pod
239:
240: =over
241:
242: =item upload_size_allowed()
243:
244: Perform size checks for file uploads to essayresponse items in course context.
245:
246: Add form.HWFILESIZE.$part_$id to %env with file size (MB)
247: If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env.
248:
249: =cut
250:
251: sub upload_size_allowed {
252: my ($name,$size,$fname) = @_;
253: if ($name =~ /^HWFILE(\w+)$/) {
254: my $ident = $1;
255: my $item = 'HWFILESIZE'.$ident;
256: my $savesize = sprintf("%.6f",$size);
257: &Apache::loncommon::add_to_env("form.$item",$savesize);
258: my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize");
259: if (!$maxsize) {
260: $maxsize = 10.0; # FIXME This should become a domain configuration.
261: }
262: if ($size > $maxsize) {
263: my $warn = 'HWFILETOOBIG'.$ident;
264: &Apache::loncommon::add_to_env("form.$warn",$fname);
265: return;
266: }
267: }
268: return 'ok';
269: }
270:
271: =pod
272:
273: =item sso_login()
274:
275: handle the case of the single sign on user, at this point $r->user
276: will be set and valid; now need to find the loncapa user info, and possibly
277: balance them. If $r->user() is set this means either it was either set by
278: SSO or by checkauthen.pm, if a valid cookie was found. The latter case can
279: be identified by the third arg ($usename), except when lonacc is called in
280: an internal redirect to /adm/switchserver (e.g., load-balancing following
281: successful authentication) -- no cookie set yet. For that particular case
282: simply skip the call to sso_login().
283:
284: returns OK if it was SSO and user was handled.
285: returns undef if not SSO or no means to handle the user.
286:
287: =cut
288:
289: sub sso_login {
290: my ($r,$handle,$username) = @_;
291:
292: my $lonidsdir=$r->dir_config('lonIDsDir');
293: if (($r->user eq '') || ($username ne '') || ($r->user eq 'public:public') ||
294: (defined($env{'user.name'}) && (defined($env{'user.domain'}))
295: && ($handle ne ''))) {
296: # not an SSO case or already logged in
297: return undef;
298: }
299:
300: my ($user) = ($r->user =~ m/^($match_username)$/);
301: if ($user eq '') {
302: return undef;
303: }
304:
305: my $query = $r->args;
306: my %form;
307: if ($query) {
308: my @items = ('role','symb','iptoken');
309: &Apache::loncommon::get_unprocessed_cgi($query,\@items);
310: foreach my $item (@items) {
311: if (defined($env{'form.'.$item})) {
312: $form{$item} = $env{'form.'.$item};
313: }
314: }
315: }
316:
317: my %sessiondata;
318: if ($form{'iptoken'}) {
319: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
320: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
321: unless ($sessiondata{'sessionserver'}) {
322: delete($form{'iptoken'});
323: }
324: }
325:
326: my $domain = $r->dir_config('lonSSOUserDomain');
327: if ($domain eq '') {
328: $domain = $r->dir_config('lonDefDomain');
329: }
330: my $home=&Apache::lonnet::homeserver($user,$domain);
331: if ($home !~ /(con_lost|no_host|no_such_host)/) {
332: &Apache::lonnet::logthis(" SSO authorized user $user ");
333: my ($is_balancer,$otherserver,$hosthere);
334: if ($form{'iptoken'}) {
335: if (($sessiondata{'domain'} eq $domain) &&
336: ($sessiondata{'username'} eq $user)) {
337: $hosthere = 1;
338: }
339: }
340: unless ($hosthere) {
341: ($is_balancer,$otherserver) =
342: &Apache::lonnet::check_loadbalancing($user,$domain,'login');
343: if ($is_balancer) {
344: if ($otherserver eq '') {
345: my $lowest_load;
346: ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($domain);
347: if ($lowest_load > 100) {
348: $otherserver = &Apache::lonnet::spareserver($lowest_load,$lowest_load,1,$domain);
349: }
350: }
351: if ($otherserver ne '') {
352: my @hosts = &Apache::lonnet::current_machine_ids();
353: if (grep(/^\Q$otherserver\E$/,@hosts)) {
354: $hosthere = $otherserver;
355: }
356: }
357: }
358: }
359: if (($is_balancer) && (!$hosthere)) {
360: # login but immediately go to switch server to find us a new
361: # machine
362: &Apache::lonauth::success($r,$user,$domain,$home,'noredirect');
363: $env{'request.sso.login'} = 1;
364: if (defined($r->dir_config("lonSSOReloginServer"))) {
365: $env{'request.sso.reloginserver'} =
366: $r->dir_config('lonSSOReloginServer');
367: }
368: my $redirecturl = '/adm/switchserver';
369: if ($otherserver ne '') {
370: $redirecturl .= '?otherserver='.$otherserver;
371: }
372: $r->internal_redirect($redirecturl);
373: $r->set_handlers('PerlHandler'=> undef);
374: } else {
375: # need to login them in, so generate the need data that
376: # migrate expects to do login
377: my $ip = $r->get_remote_host();
378: my %info=('ip' => $ip,
379: 'domain' => $domain,
380: 'username' => $user,
381: 'server' => $r->dir_config('lonHostID'),
382: 'sso.login' => 1
383: );
384: foreach my $item ('role','symb','iptoken') {
385: if (exists($form{$item})) {
386: $info{$item} = $form{$item};
387: }
388: }
389: unless ($info{'symb'}) {
390: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
391: $info{'origurl'} = $r->uri;
392: }
393: }
394: if ($r->dir_config("ssodirecturl") == 1) {
395: $info{'origurl'} = $r->uri;
396: }
397: if (defined($r->dir_config("lonSSOReloginServer"))) {
398: $info{'sso.reloginserver'} =
399: $r->dir_config('lonSSOReloginServer');
400: }
401: if (($is_balancer) && ($hosthere)) {
402: $info{'noloadbalance'} = $hosthere;
403: }
404: my $token =
405: &Apache::lonnet::tmpput(\%info,
406: $r->dir_config('lonHostID'));
407: $env{'form.token'} = $token;
408: $r->internal_redirect('/adm/migrateuser');
409: $r->set_handlers('PerlHandler'=> undef);
410: }
411: return OK;
412: } else {
413: &Apache::lonnet::logthis(" SSO authorized unknown user $user ");
414: my @cancreate;
415: my %domconfig =
416: &Apache::lonnet::get_dom('configuration',['usercreation'],$domain);
417: if (ref($domconfig{'usercreation'}) eq 'HASH') {
418: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
419: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
420: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
421: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
422: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
423: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
424: }
425: }
426: }
427: if ((grep(/^sso$/,@cancreate)) || (defined($r->dir_config('lonSSOUserUnknownRedirect')))) {
428: $r->subprocess_env->set('SSOUserUnknown' => $user);
429: $r->subprocess_env->set('SSOUserDomain' => $domain);
430: if (grep(/^sso$/,@cancreate)) {
431: $r->set_handlers('PerlHandler'=> [\&Apache::createaccount::handler]);
432: $r->handler('perl-script');
433: } else {
434: $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect'));
435: $r->set_handlers('PerlHandler'=> undef);
436: }
437: return OK;
438: }
439: }
440: return undef;
441: }
442:
443: sub handler {
444: my $r = shift;
445: my $requrl=$r->uri;
446:
447: if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) {
448: return OK;
449: }
450:
451: if (&Apache::lonnet::is_domainimage($requrl)) {
452: return OK;
453: }
454:
455: my %user;
456: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
457:
458: unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) {
459: my $result = &sso_login($r,$handle,$user{'name'});
460: if (defined($result)) {
461: return $result;
462: }
463: }
464:
465: my ($is_balancer,$otherserver);
466:
467: if ($handle eq '') {
468: unless ((($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) ||
469: ($requrl =~ m{^/public/$match_domain/$match_courseid/syllabus}) ||
470: ($requrl =~ m{^/adm/help/}) ||
471: ($requrl =~ m{^/res/$match_domain/$match_username/})) {
472: $r->log_reason("Cookie not valid", $r->filename);
473: }
474: } elsif ($handle ne '') {
475:
476: # ------------------------------------------------------ Initialize Environment
477: my $lonidsdir=$r->dir_config('lonIDsDir');
478: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
479:
480: # --------------------------------------------------------- Initialize Language
481:
482: &Apache::lonlocal::get_language_handle($r);
483:
484: }
485:
486: # -------------------------------------------------- Should be a valid user now
487: if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') {
488: # -------------------------------------------------------------- Resource State
489:
490: my ($cdom,$cnum);
491: if ($env{'request.course.id'}) {
492: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
493: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
494: }
495: if ($requrl=~/^\/+(res|uploaded)\//) {
496: $env{'request.state'} = "published";
497: } else {
498: $env{'request.state'} = 'unknown';
499: }
500: $env{'request.filename'} = $r->filename;
501: $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);
502: my ($suppext,$checkabsolute);
503: if ($requrl =~ m{^/adm/wrapper/ext/}) {
504: my $query = $r->args;
505: if ($query) {
506: my $preserved;
507: foreach my $pair (split(/&/,$query)) {
508: my ($name, $value) = split(/=/,$pair);
509: unless ($name eq 'symb') {
510: $preserved .= $pair.'&';
511: }
512: if (($env{'request.course.id'}) && ($name eq 'folderpath')) {
513: if ($value =~ /^supplemental/) {
514: $suppext = 1;
515: }
516: }
517: }
518: $preserved =~ s/\&$//;
519: if ($preserved) {
520: $env{'request.external.querystring'} = $preserved;
521: }
522: }
523: if ($env{'request.course.id'}) {
524: $checkabsolute = 1;
525: }
526: } elsif ($env{'request.course.id'} &&
527: (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) ||
528: ($requrl eq "/public/$cdom/$cnum/syllabus") ||
529: ($requrl =~ m{^/adm/$cdom/$cnum/\d+/exttools?$}))) {
530: my $query = $r->args;
531: if ($query) {
532: foreach my $pair (split(/&/,$query)) {
533: my ($name, $value) = split(/=/,$pair);
534: if ($name eq 'folderpath') {
535: if ($value =~ /^supplemental/) {
536: $suppext = 1;
537: }
538: }
539: }
540: }
541: if ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}) {
542: $checkabsolute = 1;
543: }
544: }
545: if ($checkabsolute) {
546: my $hostname = $r->hostname();
547: my $lonhost = &Apache::lonnet::host_from_dns($hostname);
548: if ($lonhost) {
549: my $actual = &Apache::lonnet::absolute_url($hostname);
550: my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
551: unless ($actual eq $expected) {
552: $env{'request.use_absolute'} = $expected;
553: }
554: }
555: }
556: # -------------------------------------------------------- Load POST parameters
557:
558: &Apache::lonacc::get_posted_cgi($r);
559:
560: # ------------------------------------------------------ Check if load balancer
561:
562: my $checkexempt;
563: if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) {
564: if ($env{'user.loadbalcheck.time'} + 600 > time) {
565: $checkexempt = 1;
566: }
567: }
568: if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) {
569: $checkexempt = 1;
570: }
571: unless ($checkexempt) {
572: ($is_balancer,$otherserver) =
573: &Apache::lonnet::check_loadbalancing($env{'user.name'},
574: $env{'user.domain'});
575: }
576: if ($is_balancer) {
577: $r->set_handlers('PerlResponseHandler'=>
578: [\&Apache::switchserver::handler]);
579: if ($otherserver ne '') {
580: $env{'form.otherserver'} = $otherserver;
581: }
582: unless (($env{'form.origurl'}) || ($r->uri eq '/adm/roles') ||
583: ($r->uri eq '/adm/switchserver') || ($r->uri eq '/adm/sso')) {
584: $env{'form.origurl'} = $r->uri;
585: }
586: }
587:
588: # ---------------------------------------------------------------- Check access
589: my $now = time;
590: if ($requrl !~ m{^/(?:adm|public|prtspool)/}
591: || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) {
592: my $access=&Apache::lonnet::allowed('bre',$requrl);
593: if ($handle eq '') {
594: unless ($access eq 'F') {
595: if ($requrl =~ m{^/res/$match_domain/$match_username/}) {
596: $r->log_reason("Cookie not valid", $r->filename);
597: }
598: }
599: }
600: if ($access eq '1') {
601: $env{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
602: return HTTP_NOT_ACCEPTABLE;
603: }
604: if ($access eq 'A') {
605: &Apache::restrictedaccess::setup_handler($r);
606: return OK;
607: }
608: if ($access eq 'B') {
609: &Apache::blockedaccess::setup_handler($r);
610: return OK;
611: }
612: if (($access ne '2') && ($access ne 'F')) {
613: if ($requrl =~ m{^/res/}) {
614: $access = &Apache::lonnet::allowed('bro',$requrl);
615: if ($access ne 'F') {
616: if ($requrl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
617: $access = &Apache::lonnet::allowed('bre','/res/lib/templates/simpleproblem.problem');
618: if ($access ne 'F') {
619: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
620: return HTTP_NOT_ACCEPTABLE;
621: }
622: } else {
623: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
624: return HTTP_NOT_ACCEPTABLE;
625: }
626: }
627: } elsif (($handle =~ /^publicuser_\d+$/) && (&Apache::lonnet::is_portfolio_url($requrl))) {
628: my $clientip = $r->get_remote_host();
629: if (&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip) ne 'F') {
630: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
631: return HTTP_NOT_ACCEPTABLE;
632: }
633: } else {
634: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
635: return HTTP_NOT_ACCEPTABLE;
636: }
637: }
638: }
639: if ($requrl =~ m|^/prtspool/|) {
640: my $start='/prtspool/'.$env{'user.name'}.'_'.
641: $env{'user.domain'};
642: if ($requrl !~ /^\Q$start\E/) {
643: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
644: return HTTP_NOT_ACCEPTABLE;
645: }
646: }
647: if ($requrl =~ m|^/zipspool/|) {
648: my $start='/zipspool/zipout/'.$env{'user.name'}.":".
649: $env{'user.domain'};
650: if ($requrl !~ /^\Q$start\E/) {
651: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
652: return HTTP_NOT_ACCEPTABLE;
653: }
654: }
655: if ($env{'user.name'} eq 'public' &&
656: $env{'user.domain'} eq 'public' &&
657: $requrl !~ m{^/+(res|public|uploaded)/} &&
658: $requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x &&
659: $requrl !~ m{^/adm/blockingstatus/.*$} &&
660: $requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) {
661: $env{'request.querystring'}=$r->args;
662: $env{'request.firsturl'}=$requrl;
663: return FORBIDDEN;
664: }
665: # ------------------------------------------------------------- This is allowed
666: if ($env{'request.course.id'}) {
667: &Apache::lonnet::countacc($requrl);
668: $requrl=~/\.(\w+)$/;
669: my $query=$r->args;
670: if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
671: ($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) ||
672: ($requrl=~/^\/adm\/wrapper\//) ||
673: ($requrl=~m|^/adm/coursedocs/showdoc/|) ||
674: ($requrl=~m|\.problem/smpedit$|) ||
675: ($requrl=~/^\/public\/.*\/syllabus$/) ||
676: ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) ||
677: ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/) ||
678: ($requrl=~m{^/adm/$cdom/$cnum/\d+/exttools?$})) {
679: # ------------------------------------- This is serious stuff, get symb and log
680: my $symb;
681: if ($query) {
682: &Apache::loncommon::get_unprocessed_cgi($query,['symb','folderpath']);
683: }
684: if ($env{'form.symb'}) {
685: $symb=&Apache::lonnet::symbclean($env{'form.symb'});
686: if ($requrl =~ m|^/adm/wrapper/|
687: || $requrl =~ m|^/adm/coursedocs/showdoc/|) {
688: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
689: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
690: 'last_known' =>[$murl,$mid]);
691: } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) ||
692: (($requrl=~m|(.*)/smpedit$|) &&
693: &Apache::lonnet::symbverify($symb,$1)) ||
694: (($requrl=~m|(.*/aboutme)/portfolio$|) &&
695: &Apache::lonnet::symbverify($symb,$1))) {
696: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
697: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
698: 'last_known' =>[$murl,$mid]);
699: } else {
700: $r->log_reason('Invalid symb for '.$requrl.': '.
701: $symb);
702: $env{'user.error.msg'}=
703: "$requrl:bre:1:1:Invalid Access";
704: return HTTP_NOT_ACCEPTABLE;
705: }
706: } else {
707: if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) {
708: $requrl = $1;
709: }
710: unless ($suppext) {
711: $symb=&Apache::lonnet::symbread($requrl);
712: if (&Apache::lonnet::is_on_map($requrl) && $symb &&
713: !&Apache::lonnet::symbverify($symb,$requrl)) {
714: $r->log_reason('Invalid symb for '.$requrl.': '.$symb);
715: $env{'user.error.msg'}=
716: "$requrl:bre:1:1:Invalid Access";
717: return HTTP_NOT_ACCEPTABLE;
718: }
719: if ($symb) {
720: my ($map,$mid,$murl)=
721: &Apache::lonnet::decode_symb($symb);
722: &Apache::lonnet::symblist($map,$murl =>[$murl,$mid],
723: 'last_known' =>[$murl,$mid]);
724: }
725: }
726: }
727: $env{'request.symb'}=$symb;
728: &Apache::lonnet::courseacclog($symb);
729: } else {
730: # ------------------------------------------------------- This is other content
731: &Apache::lonnet::courseacclog($requrl);
732: }
733: if ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/.+\.html?$}) {
734: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
735: if ($query) {
736: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit']);
737: if ($env{'form.forceedit'}) {
738: $env{'request.state'} = 'edit';
739: }
740: }
741: }
742: } elsif ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/portfolio/syllabus/.+\.html?$}) {
743: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
744: if ($query) {
745: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit','editmode']);
746: if (($env{'form.forceedit'}) || ($env{'form.editmode'})) {
747: $env{'request.state'} = 'edit';
748: }
749: }
750: }
751: }
752: }
753: return OK;
754: } else {
755: my $defdom=$r->dir_config('lonDefDomain');
756: ($is_balancer,$otherserver) =
757: &Apache::lonnet::check_loadbalancing(undef,$defdom);
758: if ($is_balancer) {
759: $r->set_handlers('PerlResponseHandler'=>
760: [\&Apache::switchserver::handler]);
761: if ($otherserver ne '') {
762: $env{'form.otherserver'} = $otherserver;
763: }
764: }
765: }
766: # -------------------------------------------- See if this is a public resource
767: if ($requrl=~m|^/+adm/+help/+|) {
768: return OK;
769: }
770: # ------------------------------------ See if this is a viewable portfolio file
771: if (&Apache::lonnet::is_portfolio_url($requrl)) {
772: my $clientip = $r->get_remote_host();
773: my $access=&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip);
774: if ($access eq 'A') {
775: &Apache::restrictedaccess::setup_handler($r);
776: return OK;
777: }
778: if (($access ne '2') && ($access ne 'F')) {
779: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
780: return HTTP_NOT_ACCEPTABLE;
781: }
782: }
783:
784: # -------------------------------------------------------------- Not authorized
785: $requrl=~/\.(\w+)$/;
786: # if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
787: # ($requrl=~/^\/adm\/(roles|logout|email|menu|remote)/) ||
788: # ($requrl=~m|^/prtspool/|)) {
789: # -------------------------- Store where they wanted to go and get login screen
790: $env{'request.querystring'}=$r->args;
791: $env{'request.firsturl'}=$requrl;
792: return FORBIDDEN;
793: # } else {
794: # --------------------------------------------------------------------- Goodbye
795: # return HTTP_BAD_REQUEST;
796: # }
797: }
798:
799: 1;
800: __END__
801:
802: =pod
803:
804: =back
805:
806: =cut
807:
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