Annotation of loncom/auth/lonacc.pm, revision 1.159.2.19
1.1 albertel 1: # The LearningOnline Network
2: # Cookie Based Access Handler
1.22 www 3: #
1.159.2.19! raeburn 4: # $Id: lonacc.pm,v 1.159.2.18 2021/01/04 03:47:01 raeburn Exp $
1.22 www 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: #
1.25 harris41 28: ###
1.1 albertel 29:
1.121 jms 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:
1.119 jms 94:
1.1 albertel 95: package Apache::lonacc;
96:
97: use strict;
1.8 www 98: use Apache::Constants qw(:common :http :methods);
1.2 www 99: use Apache::File;
1.6 www 100: use Apache::lonnet;
1.25 harris41 101: use Apache::loncommon();
1.47 www 102: use Apache::lonlocal;
1.86 albertel 103: use Apache::restrictedaccess();
1.148 raeburn 104: use Apache::blockedaccess();
1.16 www 105: use Fcntl qw(:flock);
1.141 raeburn 106: use LONCAPA qw(:DEFAULT :match);
1.1 albertel 107:
1.75 albertel 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:
1.76 albertel 121: ###############################################
122:
123: sub get_posted_cgi {
1.114 raeburn 124: my ($r,$fields) = @_;
1.76 albertel 125:
126: my $buffer;
127: if ($r->header_in('Content-length')) {
128: $r->read($buffer,$r->header_in('Content-length'),0);
129: }
1.113 albertel 130: my $content_type = $r->header_in('Content-type');
131: if ($content_type !~ m{^multipart/form-data}) {
1.76 albertel 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($1))/eg;
1.114 raeburn 140: if (ref($fields) eq 'ARRAY') {
141: next if (!grep(/^\Q$name\E$/,@{$fields}));
142: }
1.77 albertel 143: &Apache::loncommon::add_to_env("form.$name",$value);
1.76 albertel 144: }
145: } else {
1.113 albertel 146: my ($contentsep) = ($content_type =~ /boundary=\"?([^\";,]+)\"?/);
1.76 albertel 147: my @lines = split (/\n/,$buffer);
148: my $name='';
149: my $value='';
150: my $fname='';
151: my $fmime='';
152: my $i;
153: for ($i=0;$i<=$#lines;$i++) {
1.113 albertel 154: if ($lines[$i]=~/^--\Q$contentsep\E/) {
1.76 albertel 155: if ($name) {
1.139 raeburn 156: chomp($value);
157: if (($r->uri eq '/adm/portfolio') &&
158: ($name eq 'uploaddoc')) {
159: if (length($value) == 1) {
160: $value=~s/[\r\n]$//;
161: }
1.159.2.6 raeburn 162: } elsif ($fname =~ /\.(xls|doc|ppt)(x|m)$/i) {
1.154 raeburn 163: $value=~s/[\r\n]$//;
1.139 raeburn 164: }
1.114 raeburn 165: if (ref($fields) eq 'ARRAY') {
166: next if (!grep(/^\Q$name\E$/,@{$fields}));
167: }
1.118 raeburn 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: }
1.76 albertel 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: $i++;
206: }
207: } else {
208: $value.=$lines[$i]."\n";
209: }
210: }
211: }
212: #
213: # Digested POSTed values
214: #
215: # Remember the way this was originally done (GET or POST)
216: #
217: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
218: #
219: # There may also be stuff in the query string
220: # Tell subsequent handlers that this was GET, not POST, so they can access query string.
221: # Also, unset POSTed content length to cover all tracks.
222: #
223:
224: $r->method_number(M_GET);
225:
226: $r->method('GET');
227: $r->headers_in->unset('Content-length');
228: }
229:
1.121 jms 230: =pod
231:
1.146 raeburn 232: =over
233:
1.121 jms 234: =item upload_size_allowed()
235:
236: Perform size checks for file uploads to essayresponse items in course context.
237:
238: Add form.HWFILESIZE.$part_$id to %env with file size (MB)
239: If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env.
240:
241: =cut
1.118 raeburn 242:
243: sub upload_size_allowed {
244: my ($name,$size,$fname) = @_;
245: if ($name =~ /^HWFILE(\w+)$/) {
246: my $ident = $1;
247: my $item = 'HWFILESIZE'.$ident;
1.122 raeburn 248: my $savesize = sprintf("%.6f",$size);
249: &Apache::loncommon::add_to_env("form.$item",$savesize);
1.118 raeburn 250: my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize");
251: if (!$maxsize) {
1.123 raeburn 252: $maxsize = 10.0; # FIXME This should become a domain configuration.
1.118 raeburn 253: }
254: if ($size > $maxsize) {
255: my $warn = 'HWFILETOOBIG'.$ident;
256: &Apache::loncommon::add_to_env("form.$warn",$fname);
257: return;
258: }
259: }
260: return 'ok';
261: }
262:
1.121 jms 263: =pod
264:
265: =item sso_login()
266:
267: handle the case of the single sign on user, at this point $r->user
1.150 raeburn 268: will be set and valid; now need to find the loncapa user info, and possibly
1.149 raeburn 269: balance them. If $r->user() is set this means either it was either set by
1.150 raeburn 270: SSO or by checkauthen.pm, if a valid cookie was found. The latter case can
271: be identified by the third arg ($usename), except when lonacc is called in
272: an internal redirect to /adm/switchserver (e.g., load-balancing following
273: successful authentication) -- no cookie set yet. For that particular case
274: simply skip the call to sso_login().
1.149 raeburn 275:
276: returns OK if it was SSO and user was handled.
277: returns undef if not SSO or no means to handle the user.
1.121 jms 278:
279: =cut
1.117 jms 280:
1.94 albertel 281: sub sso_login {
1.149 raeburn 282: my ($r,$handle,$username) = @_;
1.94 albertel 283:
1.156 raeburn 284: if (($r->user eq '') || ($username ne '') || ($r->user eq 'public:public') ||
1.143 raeburn 285: (defined($env{'user.name'}) && (defined($env{'user.domain'}))
286: && ($handle ne ''))) {
1.94 albertel 287: # not an SSO case or already logged in
288: return undef;
289: }
290:
1.159.2.1 raeburn 291: my ($user) = ($r->user =~ m/^($match_username)$/);
292: if ($user eq '') {
293: return undef;
294: }
1.97 albertel 295:
1.126 raeburn 296: my $query = $r->args;
297: my %form;
298: if ($query) {
1.145 raeburn 299: my @items = ('role','symb','iptoken');
1.127 raeburn 300: &Apache::loncommon::get_unprocessed_cgi($query,\@items);
301: foreach my $item (@items) {
302: if (defined($env{'form.'.$item})) {
303: $form{$item} = $env{'form.'.$item};
1.126 raeburn 304: }
305: }
306: }
307:
1.145 raeburn 308: my %sessiondata;
309: if ($form{'iptoken'}) {
310: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
1.158 raeburn 311: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
312: unless ($sessiondata{'sessionserver'}) {
313: delete($form{'iptoken'});
314: }
1.145 raeburn 315: }
316:
1.136 raeburn 317: my $domain = $r->dir_config('lonSSOUserDomain');
318: if ($domain eq '') {
319: $domain = $r->dir_config('lonDefDomain');
320: }
1.97 albertel 321: my $home=&Apache::lonnet::homeserver($user,$domain);
1.94 albertel 322: if ($home !~ /(con_lost|no_host|no_such_host)/) {
1.107 albertel 323: &Apache::lonnet::logthis(" SSO authorized user $user ");
1.145 raeburn 324: my ($is_balancer,$otherserver,$hosthere);
325: if ($form{'iptoken'}) {
1.158 raeburn 326: if (($sessiondata{'domain'} eq $domain) &&
327: ($sessiondata{'username'} eq $user)) {
1.145 raeburn 328: $hosthere = 1;
329: }
330: }
331: unless ($hosthere) {
332: ($is_balancer,$otherserver) =
1.159.2.5 raeburn 333: &Apache::lonnet::check_loadbalancing($user,$domain,'login');
334: if ($is_balancer) {
1.159.2.8 raeburn 335: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
336: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
337: if (($found_server) && ($balancer_cookie =~ /^\Q$domain\E_\Q$user\E_/)) {
338: $otherserver = $found_server;
339: } elsif ($otherserver eq '') {
1.159.2.5 raeburn 340: my $lowest_load;
341: ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($domain);
342: if ($lowest_load > 100) {
343: $otherserver = &Apache::lonnet::spareserver($lowest_load,$lowest_load,1,$domain);
344: }
1.159.2.8 raeburn 345: if ($otherserver ne '') {
346: my @hosts = &Apache::lonnet::current_machine_ids();
347: if (grep(/^\Q$otherserver\E$/,@hosts)) {
348: $hosthere = $otherserver;
349: }
1.159.2.5 raeburn 350: }
351: }
352: }
1.145 raeburn 353: }
1.159.2.5 raeburn 354: if (($is_balancer) && (!$hosthere)) {
1.136 raeburn 355: # login but immediately go to switch server to find us a new
1.94 albertel 356: # machine
1.127 raeburn 357: &Apache::lonauth::success($r,$user,$domain,$home,'noredirect');
1.105 raeburn 358: $env{'request.sso.login'} = 1;
1.106 raeburn 359: if (defined($r->dir_config("lonSSOReloginServer"))) {
360: $env{'request.sso.reloginserver'} =
361: $r->dir_config('lonSSOReloginServer');
362: }
1.137 raeburn 363: my $redirecturl = '/adm/switchserver';
364: if ($otherserver ne '') {
365: $redirecturl .= '?otherserver='.$otherserver;
366: }
367: $r->internal_redirect($redirecturl);
1.101 albertel 368: $r->set_handlers('PerlHandler'=> undef);
1.94 albertel 369: } else {
370: # need to login them in, so generate the need data that
371: # migrate expects to do login
1.159.2.18 raeburn 372: my $ip = &Apache::lonnet::get_requestor_ip($r);
1.147 raeburn 373: my %info=('ip' => $ip,
1.94 albertel 374: 'domain' => $domain,
1.97 albertel 375: 'username' => $user,
1.94 albertel 376: 'server' => $r->dir_config('lonHostID'),
377: 'sso.login' => 1
378: );
1.158 raeburn 379: foreach my $item ('role','symb','iptoken') {
1.126 raeburn 380: if (exists($form{$item})) {
381: $info{$item} = $form{$item};
382: }
383: }
1.151 raeburn 384: unless ($info{'symb'}) {
1.152 raeburn 385: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
1.151 raeburn 386: $info{'origurl'} = $r->uri;
387: }
388: }
1.116 raeburn 389: if ($r->dir_config("ssodirecturl") == 1) {
390: $info{'origurl'} = $r->uri;
391: }
1.106 raeburn 392: if (defined($r->dir_config("lonSSOReloginServer"))) {
393: $info{'sso.reloginserver'} =
394: $r->dir_config('lonSSOReloginServer');
395: }
1.159.2.5 raeburn 396: if (($is_balancer) && ($hosthere)) {
397: $info{'noloadbalance'} = $hosthere;
398: }
1.94 albertel 399: my $token =
400: &Apache::lonnet::tmpput(\%info,
401: $r->dir_config('lonHostID'));
402: $env{'form.token'} = $token;
403: $r->internal_redirect('/adm/migrateuser');
1.101 albertel 404: $r->set_handlers('PerlHandler'=> undef);
1.94 albertel 405: }
406: return OK;
1.155 raeburn 407: } else {
1.107 albertel 408: &Apache::lonnet::logthis(" SSO authorized unknown user $user ");
1.115 raeburn 409: my @cancreate;
410: my %domconfig =
411: &Apache::lonnet::get_dom('configuration',['usercreation'],$domain);
412: if (ref($domconfig{'usercreation'}) eq 'HASH') {
413: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
414: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
415: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
416: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
417: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
418: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
419: }
420: }
421: }
1.155 raeburn 422: if ((grep(/^sso$/,@cancreate)) || (defined($r->dir_config('lonSSOUserUnknownRedirect')))) {
423: $r->subprocess_env->set('SSOUserUnknown' => $user);
424: $r->subprocess_env->set('SSOUserDomain' => $domain);
425: if (grep(/^sso$/,@cancreate)) {
426: $r->set_handlers('PerlHandler'=> [\&Apache::createaccount::handler]);
427: $r->handler('perl-script');
428: } else {
429: $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect'));
430: $r->set_handlers('PerlHandler'=> undef);
431: }
432: return OK;
1.115 raeburn 433: }
1.94 albertel 434: }
435: return undef;
436: }
437:
1.1 albertel 438: sub handler {
439: my $r = shift;
440: my $requrl=$r->uri;
1.149 raeburn 441:
442: if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) {
1.108 raeburn 443: return OK;
444: }
1.70 albertel 445:
1.149 raeburn 446: if (&Apache::lonnet::is_domainimage($requrl)) {
1.124 raeburn 447: return OK;
448: }
449:
1.149 raeburn 450: my %user;
451: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
1.93 albertel 452:
1.150 raeburn 453: unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) {
454: my $result = &sso_login($r,$handle,$user{'name'});
455: if (defined($result)) {
456: return $result;
457: }
1.70 albertel 458: }
459:
1.137 raeburn 460: my ($is_balancer,$otherserver);
1.142 raeburn 461:
1.92 albertel 462: if ($handle eq '') {
1.159 raeburn 463: unless ((($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) ||
464: ($requrl =~ m{^/public/$match_domain/$match_courseid/syllabus}) ||
465: ($requrl =~ m{^/adm/help/}) ||
466: ($requrl =~ m{^/res/$match_domain/$match_username/})) {
1.149 raeburn 467: $r->log_reason("Cookie not valid", $r->filename);
1.142 raeburn 468: }
1.111 albertel 469: } elsif ($handle ne '') {
1.6 www 470:
1.46 www 471: # ------------------------------------------------------ Initialize Environment
1.111 albertel 472: my $lonidsdir=$r->dir_config('lonIDsDir');
1.92 albertel 473: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
1.47 www 474:
475: # --------------------------------------------------------- Initialize Language
476:
1.92 albertel 477: &Apache::lonlocal::get_language_handle($r);
478:
479: }
1.46 www 480:
1.92 albertel 481: # -------------------------------------------------- Should be a valid user now
482: if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') {
1.46 www 483: # -------------------------------------------------------------- Resource State
1.6 www 484:
1.141 raeburn 485: my ($cdom,$cnum);
486: if ($env{'request.course.id'}) {
487: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
488: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
489: }
1.92 albertel 490: if ($requrl=~/^\/+(res|uploaded)\//) {
491: $env{'request.state'} = "published";
492: } else {
493: $env{'request.state'} = 'unknown';
494: }
495: $env{'request.filename'} = $r->filename;
496: $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);
1.157 raeburn 497: my ($suppext,$checkabsolute);
1.129 raeburn 498: if ($requrl =~ m{^/adm/wrapper/ext/}) {
499: my $query = $r->args;
500: if ($query) {
501: my $preserved;
502: foreach my $pair (split(/&/,$query)) {
503: my ($name, $value) = split(/=/,$pair);
1.159.2.7 raeburn 504: unless (($name eq 'symb') || ($name eq 'usehttp')) {
1.129 raeburn 505: $preserved .= $pair.'&';
506: }
1.141 raeburn 507: if (($env{'request.course.id'}) && ($name eq 'folderpath')) {
508: if ($value =~ /^supplemental/) {
509: $suppext = 1;
510: }
511: }
1.129 raeburn 512: }
513: $preserved =~ s/\&$//;
514: if ($preserved) {
515: $env{'request.external.querystring'} = $preserved;
516: }
517: }
1.157 raeburn 518: if ($env{'request.course.id'}) {
519: $checkabsolute = 1;
520: }
1.141 raeburn 521: } elsif ($env{'request.course.id'} &&
522: (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) ||
523: ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}))) {
524: my $query = $r->args;
525: if ($query) {
526: foreach my $pair (split(/&/,$query)) {
527: my ($name, $value) = split(/=/,$pair);
528: if ($name eq 'folderpath') {
529: if ($value =~ /^supplemental/) {
530: $suppext = 1;
531: }
1.159.2.12 raeburn 532: last;
1.141 raeburn 533: }
534: }
535: }
1.157 raeburn 536: if ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}) {
537: $checkabsolute = 1;
538: }
539: }
540: if ($checkabsolute) {
541: my $hostname = $r->hostname();
542: my $lonhost = &Apache::lonnet::host_from_dns($hostname);
543: if ($lonhost) {
544: my $actual = &Apache::lonnet::absolute_url($hostname);
545: my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
546: unless ($actual eq $expected) {
547: $env{'request.use_absolute'} = $expected;
548: }
549: }
1.129 raeburn 550: }
1.6 www 551: # -------------------------------------------------------- Load POST parameters
552:
1.92 albertel 553: &Apache::lonacc::get_posted_cgi($r);
1.6 www 554:
1.137 raeburn 555: # ------------------------------------------------------ Check if load balancer
556:
1.138 raeburn 557: my $checkexempt;
558: if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) {
559: if ($env{'user.loadbalcheck.time'} + 600 > time) {
1.159.2.8 raeburn 560: $checkexempt = 1;
1.138 raeburn 561: }
562: }
1.145 raeburn 563: if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) {
564: $checkexempt = 1;
565: }
1.159.2.15 raeburn 566: unless (($checkexempt) || (($requrl eq '/adm/switchserver') && (!$r->is_initial_req()))) {
1.138 raeburn 567: ($is_balancer,$otherserver) =
568: &Apache::lonnet::check_loadbalancing($env{'user.name'},
569: $env{'user.domain'});
1.159.2.8 raeburn 570: if ($is_balancer) {
1.159.2.15 raeburn 571: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
572: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
573: if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
574: $otherserver = $found_server;
575: }
576: unless ($requrl eq '/adm/switchserver') {
577: $r->set_handlers('PerlResponseHandler'=>
578: [\&Apache::switchserver::handler]);
1.159.2.8 raeburn 579: }
580: if ($otherserver ne '') {
581: $env{'form.otherserver'} = $otherserver;
582: }
1.159.2.15 raeburn 583: unless (($env{'form.origurl'}) || ($r->uri eq '/adm/roles') ||
584: ($r->uri eq '/adm/switchserver') || ($r->uri eq '/adm/sso')) {
585: $env{'form.origurl'} = $r->uri;
586: }
1.152 raeburn 587: }
1.137 raeburn 588: }
589:
1.6 www 590: # ---------------------------------------------------------------- Check access
1.92 albertel 591: my $now = time;
1.159.2.17 raeburn 592: my ($check_symb,$check_access,$check_block,$access,$poss_symb);
1.159.2.10 raeburn 593: if ($requrl !~ m{^/(?:adm|public|(?:prt|zip)spool)/}
1.95 albertel 594: || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) {
1.159.2.16 raeburn 595: $check_access = 1;
596: }
1.159.2.17 raeburn 597: if ((!$check_access) && ($env{'request.course.id'})) {
598: if (($requrl eq '/adm/viewclasslist') ||
599: ($requrl =~ m{^(/adm/wrapper|)\Q/uploaded/$cdom/$cnum/docs/\E}) ||
600: ($requrl =~ m{^/adm/.*/aboutme$}) ||
601: ($requrl=~m{^/adm/coursedocs/showdoc/})) {
602: $check_block = 1;
603: }
604: }
1.159.2.16 raeburn 605: if (($env{'request.course.id'}) && (!$suppext)) {
606: $requrl=~/\.(\w+)$/;
607: if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
608: ($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) ||
609: ($requrl=~/^\/adm\/wrapper\//) ||
610: ($requrl=~m|^/adm/coursedocs/showdoc/|) ||
611: ($requrl=~m|\.problem/smpedit$|) ||
612: ($requrl=~/^\/public\/.*\/syllabus$/) ||
613: ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) ||
614: ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/)) {
615: $check_symb = 1;
1.159.2.12 raeburn 616: }
1.159.2.16 raeburn 617: }
1.159.2.17 raeburn 618: if (($check_access) || ($check_block)) {
1.159.2.12 raeburn 619: if ($check_symb) {
1.159.2.11 raeburn 620: if ($env{'form.symb'}) {
621: $poss_symb=&Apache::lonnet::symbclean($env{'form.symb'});
1.159.2.12 raeburn 622: } elsif (($env{'request.course.id'}) && ($r->args ne '')) {
623: my $query = $r->args;
624: foreach my $pair (split(/&/,$query)) {
625: my ($name, $value) = split(/=/,$pair);
1.159.2.13 raeburn 626: $name = &unescape($name);
627: $value =~ tr/+/ /;
628: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.159.2.12 raeburn 629: if ($name eq 'symb') {
630: $poss_symb = &Apache::lonnet::symbclean($value);
631: last;
632: }
633: }
1.159.2.11 raeburn 634: }
635: if ($poss_symb) {
636: my ($possmap,$resid,$url)=&Apache::lonnet::decode_symb($poss_symb);
637: $url = &Apache::lonnet::clutter($url);
1.159.2.17 raeburn 638: my $toplevelmap = $env{'course.'.$env{'request.course.id'}.'.url'};
639: unless (($url eq $requrl) && (($possmap eq $toplevelmap) ||
640: (&Apache::lonnet::is_on_map($possmap)))) {
1.159.2.11 raeburn 641: undef($poss_symb);
642: }
643: if ($poss_symb) {
644: if ((!$env{'request.role.adv'}) && ($env{'acc.randomout'}) &&
645: ($env{'acc.randomout'}=~/\&\Q$poss_symb\E\&/)) {
646: undef($poss_symb);
647: }
648: }
649: }
650: if ($poss_symb) {
651: $access=&Apache::lonnet::allowed('bre',$requrl,$poss_symb);
652: } else {
653: $access=&Apache::lonnet::allowed('bre',$requrl,'','','','',1);
654: }
655: } else {
656: $access=&Apache::lonnet::allowed('bre',$requrl);
657: }
1.159.2.17 raeburn 658: }
659: if ($check_block) {
660: if ($access eq 'B') {
661: if ($poss_symb) {
662: if (&Apache::lonnet::symbverify($poss_symb,$requrl)) {
663: $env{'request.symb'} = $poss_symb;
664: }
665: }
666: &Apache::blockedaccess::setup_handler($r);
667: return OK;
668: }
669: } elsif ($check_access) {
1.159 raeburn 670: if ($handle eq '') {
671: unless ($access eq 'F') {
672: if ($requrl =~ m{^/res/$match_domain/$match_username/}) {
673: $r->log_reason("Cookie not valid", $r->filename);
674: }
675: }
676: }
1.92 albertel 677: if ($access eq '1') {
678: $env{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
679: return HTTP_NOT_ACCEPTABLE;
680: }
681: if ($access eq 'A') {
682: &Apache::restrictedaccess::setup_handler($r);
683: return OK;
684: }
1.103 raeburn 685: if ($access eq 'B') {
1.159.2.11 raeburn 686: if ($poss_symb) {
687: if (&Apache::lonnet::symbverify($poss_symb,$requrl)) {
688: $env{'request.symb'} = $poss_symb;
689: }
690: }
1.103 raeburn 691: &Apache::blockedaccess::setup_handler($r);
692: return OK;
693: }
1.92 albertel 694: if (($access ne '2') && ($access ne 'F')) {
1.130 raeburn 695: if ($requrl =~ m{^/res/}) {
696: $access = &Apache::lonnet::allowed('bro',$requrl);
697: if ($access ne 'F') {
1.132 raeburn 698: if ($requrl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
699: $access = &Apache::lonnet::allowed('bre','/res/lib/templates/simpleproblem.problem');
700: if ($access ne 'F') {
701: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
702: return HTTP_NOT_ACCEPTABLE;
703: }
704: } else {
705: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
706: return HTTP_NOT_ACCEPTABLE;
707: }
1.130 raeburn 708: }
1.159.2.3 raeburn 709: } elsif (($handle =~ /^publicuser_\d+$/) && (&Apache::lonnet::is_portfolio_url($requrl))) {
1.159.2.18 raeburn 710: my $clientip = &Apache::lonnet::get_requestor_ip($r);
1.159.2.3 raeburn 711: if (&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip) ne 'F') {
712: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
713: return HTTP_NOT_ACCEPTABLE;
714: }
1.130 raeburn 715: } else {
716: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
717: return HTTP_NOT_ACCEPTABLE;
718: }
1.37 albertel 719: }
1.92 albertel 720: }
721: if ($requrl =~ m|^/prtspool/|) {
722: my $start='/prtspool/'.$env{'user.name'}.'_'.
723: $env{'user.domain'};
724: if ($requrl !~ /^\Q$start\E/) {
725: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
726: return HTTP_NOT_ACCEPTABLE;
1.67 albertel 727: }
1.92 albertel 728: }
1.109 banghart 729: if ($requrl =~ m|^/zipspool/|) {
1.110 banghart 730: my $start='/zipspool/zipout/'.$env{'user.name'}.":".
1.109 banghart 731: $env{'user.domain'};
732: if ($requrl !~ /^\Q$start\E/) {
733: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
734: return HTTP_NOT_ACCEPTABLE;
735: }
736: }
1.92 albertel 737: if ($env{'user.name'} eq 'public' &&
738: $env{'user.domain'} eq 'public' &&
739: $requrl !~ m{^/+(res|public|uploaded)/} &&
740: $requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x &&
1.159.2.12 raeburn 741: $requrl !~ m{^/adm/blockingstatus/.*$} &&
1.92 albertel 742: $requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) {
743: $env{'request.querystring'}=$r->args;
744: $env{'request.firsturl'}=$requrl;
745: return FORBIDDEN;
746: }
1.23 www 747: # ------------------------------------------------------------- This is allowed
1.92 albertel 748: if ($env{'request.course.id'}) {
1.24 www 749: &Apache::lonnet::countacc($requrl);
1.125 raeburn 750: my $query=$r->args;
1.159.2.12 raeburn 751: if ($check_symb) {
1.23 www 752: # ------------------------------------- This is serious stuff, get symb and log
1.92 albertel 753: my $symb;
754: if ($query) {
1.141 raeburn 755: &Apache::loncommon::get_unprocessed_cgi($query,['symb','folderpath']);
1.92 albertel 756: }
757: if ($env{'form.symb'}) {
1.64 albertel 758: $symb=&Apache::lonnet::symbclean($env{'form.symb'});
1.159.2.19! raeburn 759: if (($requrl eq '/adm/navmaps') ||
! 760: ($requrl =~ m{^/adm/wrapper/}) ||
! 761: ($requrl =~ m{^/adm/coursedocs/showdoc/})) {
! 762: unless (&Apache::lonnet::symbverify($symb,$requrl)) {
! 763: if (&Apache::lonnet::is_on_map($requrl)) {
! 764: $symb = &Apache::lonnet::symbread($requrl);
! 765: unless (&Apache::lonnet::symbverify($symb,$requrl)) {
! 766: undef($symb);
! 767: }
! 768: }
! 769: }
! 770: if ($symb) {
! 771: if ($requrl eq '/adm/navmaps') {
! 772: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
! 773: &Apache::lonnet::symblist($map,$murl => [$murl,$mid]);
! 774: } elsif (($requrl =~ m{^/adm/wrapper/}) ||
! 775: ($requrl =~ m{^/adm/coursedocs/showdoc/})) {
! 776: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
! 777: if ($map =~ /\.page$/) {
! 778: my $mapsymb = &Apache::lonnet::symbread($map);
! 779: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
! 780: }
! 781: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
! 782: 'last_known' =>[$murl,$mid]);
! 783: }
1.159.2.9 raeburn 784: }
1.92 albertel 785: } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) ||
1.53 albertel 786: (($requrl=~m|(.*)/smpedit$|) &&
1.134 raeburn 787: &Apache::lonnet::symbverify($symb,$1)) ||
788: (($requrl=~m|(.*/aboutme)/portfolio$|) &&
789: &Apache::lonnet::symbverify($symb,$1))) {
1.92 albertel 790: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
1.159.2.9 raeburn 791: if (($map =~ /\.page$/) && ($requrl !~ /\.page$/)) {
792: my $mapsymb = &Apache::lonnet::symbread($map);
793: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
794: }
1.92 albertel 795: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
796: 'last_known' =>[$murl,$mid]);
1.31 www 797: } else {
798: $r->log_reason('Invalid symb for '.$requrl.': '.
1.92 albertel 799: $symb);
800: $env{'user.error.msg'}=
801: "$requrl:bre:1:1:Invalid Access";
802: return HTTP_NOT_ACCEPTABLE;
803: }
804: } else {
1.134 raeburn 805: if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) {
806: $requrl = $1;
807: }
1.159.2.12 raeburn 808: $symb=&Apache::lonnet::symbread($requrl);
809: if (&Apache::lonnet::is_on_map($requrl) && $symb) {
810: my ($encstate,$invalidsymb);
811: unless (&Apache::lonnet::symbverify($symb,$requrl,\$encstate)) {
812: $invalidsymb = 1;
813: #
1.159.2.14 raeburn 814: # If $env{'request.enc'} inconsistent with encryption expected for $symb
815: # retrieved by lonnet::symbread(), call again to check for an instance of
816: # $requrl in the course for which expected encryption matches request.enc.
817: # If symb for different instance passes lonnet::symbverify(), use that as
818: # the symb for $requrl and call &Apache::lonnet::allowed() for that symb.
819: # Report invalid symb if there is no other symb. Redirect to /adm/ambiguous
820: # if multiple possible symbs consistent with request.enc available for $requrl.
1.159.2.12 raeburn 821: #
1.159.2.14 raeburn 822: if (($env{'request.enc'} && !$encstate) || (!$env{'request.enc'} && $encstate)) {
1.159.2.12 raeburn 823: my %possibles;
824: my $nocache = 1;
1.159.2.14 raeburn 825: my $oldsymb = $symb;
1.159.2.12 raeburn 826: $symb = &Apache::lonnet::symbread($requrl,'','','',\%possibles,$nocache);
1.159.2.14 raeburn 827: if (($symb) && ($symb ne $oldsymb)) {
1.159.2.12 raeburn 828: if (&Apache::lonnet::symbverify($symb,$requrl)) {
1.159.2.14 raeburn 829: my $access=&Apache::lonnet::allowed('bre',$requrl,$symb);
830: if ($access eq 'B') {
831: $env{'request.symb'} = $symb;
832: &Apache::blockedaccess::setup_handler($r);
833: return OK;
834: } elsif (($access eq '2') || ($access eq 'F')) {
835: $invalidsymb = '';
836: }
1.159.2.11 raeburn 837: }
1.159.2.12 raeburn 838: } elsif (keys(%possibles) > 1) {
839: $r->internal_redirect('/adm/ambiguous');
840: return OK;
1.159.2.11 raeburn 841: }
1.159.2.12 raeburn 842: }
843: if ($invalidsymb) {
1.159.2.19! raeburn 844: if ($requrl eq '/adm/navmaps') {
! 845: undef(symb);
! 846: } else {
! 847: $r->log_reason('Invalid symb for '.$requrl.': '.$symb);
! 848: $env{'user.error.msg'}=
! 849: "$requrl:bre:1:1:Invalid Access";
! 850: return HTTP_NOT_ACCEPTABLE;
! 851: }
1.159.2.11 raeburn 852: }
853: }
1.159.2.12 raeburn 854: }
855: if ($symb) {
856: my ($map,$mid,$murl)=
857: &Apache::lonnet::decode_symb($symb);
858: if ($requrl eq '/adm/navmaps') {
859: &Apache::lonnet::symblist($map,$murl =>[$murl,$mid]);
860: } else {
861: if (($map =~ /\.page$/) && ($requrl !~ /\.page$/)) {
862: my $mapsymb = &Apache::lonnet::symbread($map);
863: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
1.159.2.9 raeburn 864: }
1.159.2.12 raeburn 865: &Apache::lonnet::symblist($map,$murl =>[$murl,$mid],
866: 'last_known' =>[$murl,$mid]);
867: }
1.61 albertel 868: }
1.92 albertel 869: }
870: $env{'request.symb'}=$symb;
1.159.2.11 raeburn 871: if (($env{'request.symbread.cached.'}) && ($env{'request.symbread.cached.'} ne $symb)) {
872: $env{'request.symbread.cached.'} = $symb;
873: }
1.92 albertel 874: &Apache::lonnet::courseacclog($symb);
875: } else {
1.23 www 876: # ------------------------------------------------------- This is other content
1.92 albertel 877: &Apache::lonnet::courseacclog($requrl);
878: }
1.140 raeburn 879: if ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/.+\.html?$}) {
1.125 raeburn 880: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
881: if ($query) {
882: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit']);
883: if ($env{'form.forceedit'}) {
884: $env{'request.state'} = 'edit';
885: }
886: }
887: }
1.144 raeburn 888: } elsif ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/portfolio/syllabus/.+\.html?$}) {
889: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
890: if ($query) {
891: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit','editmode']);
892: if (($env{'form.forceedit'}) || ($env{'form.editmode'})) {
893: $env{'request.state'} = 'edit';
894: }
895: }
896: }
1.125 raeburn 897: }
1.88 albertel 898: }
1.92 albertel 899: return OK;
1.137 raeburn 900: } else {
901: my $defdom=$r->dir_config('lonDefDomain');
902: ($is_balancer,$otherserver) =
903: &Apache::lonnet::check_loadbalancing(undef,$defdom);
904: if ($is_balancer) {
905: $r->set_handlers('PerlResponseHandler'=>
906: [\&Apache::switchserver::handler]);
907: if ($otherserver ne '') {
908: $env{'form.otherserver'} = $otherserver;
909: }
910: }
1.92 albertel 911: }
1.21 www 912: # -------------------------------------------- See if this is a public resource
1.68 albertel 913: if ($requrl=~m|^/+adm/+help/+|) {
1.89 albertel 914: return OK;
1.68 albertel 915: }
1.90 albertel 916: # ------------------------------------ See if this is a viewable portfolio file
1.89 albertel 917: if (&Apache::lonnet::is_portfolio_url($requrl)) {
1.159.2.18 raeburn 918: my $clientip = &Apache::lonnet::get_requestor_ip($r);
1.159.2.3 raeburn 919: my $access=&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip);
1.90 albertel 920: if ($access eq 'A') {
921: &Apache::restrictedaccess::setup_handler($r);
922: return OK;
923: }
924: if (($access ne '2') && ($access ne 'F')) {
925: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
926: return HTTP_NOT_ACCEPTABLE;
927: }
1.79 raeburn 928: }
1.87 albertel 929:
1.34 www 930: # -------------------------------------------------------------- Not authorized
931: $requrl=~/\.(\w+)$/;
1.62 albertel 932: # if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
933: # ($requrl=~/^\/adm\/(roles|logout|email|menu|remote)/) ||
934: # ($requrl=~m|^/prtspool/|)) {
1.34 www 935: # -------------------------- Store where they wanted to go and get login screen
1.64 albertel 936: $env{'request.querystring'}=$r->args;
937: $env{'request.firsturl'}=$requrl;
1.34 www 938: return FORBIDDEN;
1.62 albertel 939: # } else {
1.34 www 940: # --------------------------------------------------------------------- Goodbye
1.62 albertel 941: # return HTTP_BAD_REQUEST;
942: # }
1.1 albertel 943: }
944:
945: 1;
946: __END__
1.120 jms 947:
1.121 jms 948: =pod
1.120 jms 949:
1.121 jms 950: =back
1.120 jms 951:
1.121 jms 952: =cut
1.120 jms 953:
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