Annotation of loncom/auth/lonacc.pm, revision 1.174
1.1 albertel 1: # The LearningOnline Network
2: # Cookie Based Access Handler
1.22 www 3: #
1.174 ! raeburn 4: # $Id: lonacc.pm,v 1.173 2018/12/27 18:14:38 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: }
1.168 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: $fmime='';
204: }
1.162 damieng 205: if ($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: }
1.76 albertel 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: $r->headers_in->unset('Content-length');
236: }
237:
1.121 jms 238: =pod
239:
1.146 raeburn 240: =over
241:
1.121 jms 242: =item upload_size_allowed()
243:
244: Perform size checks for file uploads to essayresponse items in course context.
245:
246: Add form.HWFILESIZE.$part_$id to %env with file size (MB)
247: If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env.
248:
249: =cut
1.118 raeburn 250:
251: sub upload_size_allowed {
252: my ($name,$size,$fname) = @_;
253: if ($name =~ /^HWFILE(\w+)$/) {
254: my $ident = $1;
255: my $item = 'HWFILESIZE'.$ident;
1.122 raeburn 256: my $savesize = sprintf("%.6f",$size);
257: &Apache::loncommon::add_to_env("form.$item",$savesize);
1.118 raeburn 258: my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize");
259: if (!$maxsize) {
1.123 raeburn 260: $maxsize = 10.0; # FIXME This should become a domain configuration.
1.118 raeburn 261: }
262: if ($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:
1.121 jms 271: =pod
272:
273: =item sso_login()
274:
275: handle the case of the single sign on user, at this point $r->user
1.150 raeburn 276: will be set and valid; now need to find the loncapa user info, and possibly
1.149 raeburn 277: balance them. If $r->user() is set this means either it was either set by
1.150 raeburn 278: SSO or by checkauthen.pm, if a valid cookie was found. The latter case can
279: be identified by the third arg ($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().
1.149 raeburn 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.
1.121 jms 286:
287: =cut
1.117 jms 288:
1.94 albertel 289: sub sso_login {
1.149 raeburn 290: my ($r,$handle,$username) = @_;
1.94 albertel 291:
1.156 raeburn 292: if (($r->user eq '') || ($username ne '') || ($r->user eq 'public:public') ||
1.143 raeburn 293: (defined($env{'user.name'}) && (defined($env{'user.domain'}))
294: && ($handle ne ''))) {
1.94 albertel 295: # not an SSO case or already logged in
296: return undef;
297: }
298:
1.161 raeburn 299: my ($user) = ($r->user =~ m/^($match_username)$/);
300: if ($user eq '') {
301: return undef;
302: }
1.97 albertel 303:
1.126 raeburn 304: my $query = $r->args;
305: my %form;
306: if ($query) {
1.145 raeburn 307: my @items = ('role','symb','iptoken');
1.127 raeburn 308: &Apache::loncommon::get_unprocessed_cgi($query,\@items);
309: foreach my $item (@items) {
310: if (defined($env{'form.'.$item})) {
311: $form{$item} = $env{'form.'.$item};
1.126 raeburn 312: }
313: }
314: }
315:
1.145 raeburn 316: my %sessiondata;
317: if ($form{'iptoken'}) {
318: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
1.158 raeburn 319: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
320: unless ($sessiondata{'sessionserver'}) {
321: delete($form{'iptoken'});
322: }
1.145 raeburn 323: }
324:
1.136 raeburn 325: my $domain = $r->dir_config('lonSSOUserDomain');
326: if ($domain eq '') {
327: $domain = $r->dir_config('lonDefDomain');
328: }
1.97 albertel 329: my $home=&Apache::lonnet::homeserver($user,$domain);
1.94 albertel 330: if ($home !~ /(con_lost|no_host|no_such_host)/) {
1.107 albertel 331: &Apache::lonnet::logthis(" SSO authorized user $user ");
1.145 raeburn 332: my ($is_balancer,$otherserver,$hosthere);
333: if ($form{'iptoken'}) {
1.158 raeburn 334: if (($sessiondata{'domain'} eq $domain) &&
335: ($sessiondata{'username'} eq $user)) {
1.145 raeburn 336: $hosthere = 1;
337: }
338: }
339: unless ($hosthere) {
340: ($is_balancer,$otherserver) =
1.165 raeburn 341: &Apache::lonnet::check_loadbalancing($user,$domain,'login');
342: if ($is_balancer) {
1.171 raeburn 343: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
344: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
345: if (($found_server) && ($balancer_cookie =~ /^\Q$domain\E_\Q$user\E_/)) {
346: $otherserver = $found_server;
347: } elsif ($otherserver eq '') {
1.165 raeburn 348: my $lowest_load;
349: ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($domain);
350: if ($lowest_load > 100) {
351: $otherserver = &Apache::lonnet::spareserver($lowest_load,$lowest_load,1,$domain);
352: }
1.171 raeburn 353: if ($otherserver ne '') {
354: my @hosts = &Apache::lonnet::current_machine_ids();
355: if (grep(/^\Q$otherserver\E$/,@hosts)) {
356: $hosthere = $otherserver;
357: }
1.165 raeburn 358: }
359: }
360: }
1.145 raeburn 361: }
1.165 raeburn 362: if (($is_balancer) && (!$hosthere)) {
1.136 raeburn 363: # login but immediately go to switch server to find us a new
1.94 albertel 364: # machine
1.127 raeburn 365: &Apache::lonauth::success($r,$user,$domain,$home,'noredirect');
1.172 raeburn 366: foreach my $item (keys(%form)) {
367: $env{'form.'.$item} = $form{$item};
368: }
369: unless ($form{'symb'}) {
370: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
371: $env{'form.origurl'} = $r->uri;
372: }
373: }
1.105 raeburn 374: $env{'request.sso.login'} = 1;
1.106 raeburn 375: if (defined($r->dir_config("lonSSOReloginServer"))) {
376: $env{'request.sso.reloginserver'} =
377: $r->dir_config('lonSSOReloginServer');
378: }
1.137 raeburn 379: my $redirecturl = '/adm/switchserver';
380: if ($otherserver ne '') {
381: $redirecturl .= '?otherserver='.$otherserver;
382: }
383: $r->internal_redirect($redirecturl);
1.101 albertel 384: $r->set_handlers('PerlHandler'=> undef);
1.94 albertel 385: } else {
386: # need to login them in, so generate the need data that
387: # migrate expects to do login
1.164 raeburn 388: my $ip = $r->get_remote_host();
1.147 raeburn 389: my %info=('ip' => $ip,
1.94 albertel 390: 'domain' => $domain,
1.97 albertel 391: 'username' => $user,
1.94 albertel 392: 'server' => $r->dir_config('lonHostID'),
393: 'sso.login' => 1
394: );
1.158 raeburn 395: foreach my $item ('role','symb','iptoken') {
1.126 raeburn 396: if (exists($form{$item})) {
397: $info{$item} = $form{$item};
398: }
399: }
1.151 raeburn 400: unless ($info{'symb'}) {
1.152 raeburn 401: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
1.151 raeburn 402: $info{'origurl'} = $r->uri;
403: }
404: }
1.116 raeburn 405: if ($r->dir_config("ssodirecturl") == 1) {
406: $info{'origurl'} = $r->uri;
407: }
1.106 raeburn 408: if (defined($r->dir_config("lonSSOReloginServer"))) {
409: $info{'sso.reloginserver'} =
410: $r->dir_config('lonSSOReloginServer');
411: }
1.165 raeburn 412: if (($is_balancer) && ($hosthere)) {
413: $info{'noloadbalance'} = $hosthere;
414: }
1.94 albertel 415: my $token =
416: &Apache::lonnet::tmpput(\%info,
417: $r->dir_config('lonHostID'));
418: $env{'form.token'} = $token;
419: $r->internal_redirect('/adm/migrateuser');
1.101 albertel 420: $r->set_handlers('PerlHandler'=> undef);
1.94 albertel 421: }
422: return OK;
1.155 raeburn 423: } else {
1.107 albertel 424: &Apache::lonnet::logthis(" SSO authorized unknown user $user ");
1.115 raeburn 425: my @cancreate;
426: my %domconfig =
427: &Apache::lonnet::get_dom('configuration',['usercreation'],$domain);
428: if (ref($domconfig{'usercreation'}) eq 'HASH') {
429: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
430: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
431: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
432: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
433: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
434: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
435: }
436: }
437: }
1.155 raeburn 438: if ((grep(/^sso$/,@cancreate)) || (defined($r->dir_config('lonSSOUserUnknownRedirect')))) {
439: $r->subprocess_env->set('SSOUserUnknown' => $user);
440: $r->subprocess_env->set('SSOUserDomain' => $domain);
441: if (grep(/^sso$/,@cancreate)) {
442: $r->set_handlers('PerlHandler'=> [\&Apache::createaccount::handler]);
443: $r->handler('perl-script');
444: } else {
445: $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect'));
446: $r->set_handlers('PerlHandler'=> undef);
447: }
448: return OK;
1.115 raeburn 449: }
1.94 albertel 450: }
451: return undef;
452: }
453:
1.1 albertel 454: sub handler {
455: my $r = shift;
456: my $requrl=$r->uri;
1.149 raeburn 457:
458: if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) {
1.108 raeburn 459: return OK;
460: }
1.70 albertel 461:
1.149 raeburn 462: if (&Apache::lonnet::is_domainimage($requrl)) {
1.124 raeburn 463: return OK;
464: }
465:
1.149 raeburn 466: my %user;
467: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
1.93 albertel 468:
1.150 raeburn 469: unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) {
470: my $result = &sso_login($r,$handle,$user{'name'});
471: if (defined($result)) {
472: return $result;
473: }
1.70 albertel 474: }
475:
1.137 raeburn 476: my ($is_balancer,$otherserver);
1.142 raeburn 477:
1.92 albertel 478: if ($handle eq '') {
1.159 raeburn 479: unless ((($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) ||
480: ($requrl =~ m{^/public/$match_domain/$match_courseid/syllabus}) ||
481: ($requrl =~ m{^/adm/help/}) ||
482: ($requrl =~ m{^/res/$match_domain/$match_username/})) {
1.149 raeburn 483: $r->log_reason("Cookie not valid", $r->filename);
1.142 raeburn 484: }
1.111 albertel 485: } elsif ($handle ne '') {
1.6 www 486:
1.46 www 487: # ------------------------------------------------------ Initialize Environment
1.111 albertel 488: my $lonidsdir=$r->dir_config('lonIDsDir');
1.92 albertel 489: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
1.47 www 490:
491: # --------------------------------------------------------- Initialize Language
492:
1.92 albertel 493: &Apache::lonlocal::get_language_handle($r);
494:
495: }
1.46 www 496:
1.92 albertel 497: # -------------------------------------------------- Should be a valid user now
498: if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') {
1.46 www 499: # -------------------------------------------------------------- Resource State
1.6 www 500:
1.141 raeburn 501: my ($cdom,$cnum);
502: if ($env{'request.course.id'}) {
503: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
504: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
505: }
1.92 albertel 506: if ($requrl=~/^\/+(res|uploaded)\//) {
507: $env{'request.state'} = "published";
508: } else {
509: $env{'request.state'} = 'unknown';
510: }
511: $env{'request.filename'} = $r->filename;
512: $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);
1.157 raeburn 513: my ($suppext,$checkabsolute);
1.129 raeburn 514: if ($requrl =~ m{^/adm/wrapper/ext/}) {
515: my $query = $r->args;
516: if ($query) {
517: my $preserved;
518: foreach my $pair (split(/&/,$query)) {
519: my ($name, $value) = split(/=/,$pair);
1.174 ! raeburn 520: unless (($name eq 'symb') || ($name eq 'usehttp')) {
1.129 raeburn 521: $preserved .= $pair.'&';
522: }
1.141 raeburn 523: if (($env{'request.course.id'}) && ($name eq 'folderpath')) {
524: if ($value =~ /^supplemental/) {
525: $suppext = 1;
526: }
527: }
1.129 raeburn 528: }
529: $preserved =~ s/\&$//;
530: if ($preserved) {
531: $env{'request.external.querystring'} = $preserved;
532: }
533: }
1.157 raeburn 534: if ($env{'request.course.id'}) {
535: $checkabsolute = 1;
536: }
1.141 raeburn 537: } elsif ($env{'request.course.id'} &&
538: (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) ||
1.166 raeburn 539: ($requrl eq "/public/$cdom/$cnum/syllabus") ||
1.167 raeburn 540: ($requrl =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}))) {
1.141 raeburn 541: my $query = $r->args;
542: if ($query) {
543: foreach my $pair (split(/&/,$query)) {
544: my ($name, $value) = split(/=/,$pair);
545: if ($name eq 'folderpath') {
546: if ($value =~ /^supplemental/) {
547: $suppext = 1;
548: }
549: }
550: }
551: }
1.157 raeburn 552: if ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}) {
553: $checkabsolute = 1;
554: }
555: }
556: if ($checkabsolute) {
557: my $hostname = $r->hostname();
558: my $lonhost = &Apache::lonnet::host_from_dns($hostname);
559: if ($lonhost) {
560: my $actual = &Apache::lonnet::absolute_url($hostname);
1.173 raeburn 561: my $exphostname = &Apache::lonnet::hostname($lonhost);
1.157 raeburn 562: my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
563: unless ($actual eq $expected) {
564: $env{'request.use_absolute'} = $expected;
565: }
566: }
1.129 raeburn 567: }
1.6 www 568: # -------------------------------------------------------- Load POST parameters
569:
1.92 albertel 570: &Apache::lonacc::get_posted_cgi($r);
1.6 www 571:
1.137 raeburn 572: # ------------------------------------------------------ Check if load balancer
573:
1.138 raeburn 574: my $checkexempt;
575: if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) {
576: if ($env{'user.loadbalcheck.time'} + 600 > time) {
1.171 raeburn 577: $checkexempt = 1;
1.138 raeburn 578: }
579: }
1.145 raeburn 580: if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) {
581: $checkexempt = 1;
582: }
1.138 raeburn 583: unless ($checkexempt) {
584: ($is_balancer,$otherserver) =
585: &Apache::lonnet::check_loadbalancing($env{'user.name'},
586: $env{'user.domain'});
1.171 raeburn 587: if ($is_balancer) {
588: unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) {
589: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
590: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
591: if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
592: $otherserver = $found_server;
593: }
594: }
595: }
1.138 raeburn 596: }
1.137 raeburn 597: if ($is_balancer) {
1.171 raeburn 598: unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) {
599: $r->set_handlers('PerlResponseHandler'=>
600: [\&Apache::switchserver::handler]);
601: if ($otherserver ne '') {
602: $env{'form.otherserver'} = $otherserver;
603: }
1.137 raeburn 604: }
1.152 raeburn 605: unless (($env{'form.origurl'}) || ($r->uri eq '/adm/roles') ||
606: ($r->uri eq '/adm/switchserver') || ($r->uri eq '/adm/sso')) {
607: $env{'form.origurl'} = $r->uri;
608: }
1.137 raeburn 609: }
1.169 raeburn 610: if ($requrl=~m{^/+tiny/+$match_domain/+\w+$}) {
611: return OK;
612: }
1.6 www 613: # ---------------------------------------------------------------- Check access
1.92 albertel 614: my $now = time;
1.95 albertel 615: if ($requrl !~ m{^/(?:adm|public|prtspool)/}
616: || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) {
1.92 albertel 617: my $access=&Apache::lonnet::allowed('bre',$requrl);
1.159 raeburn 618: if ($handle eq '') {
619: unless ($access eq 'F') {
620: if ($requrl =~ m{^/res/$match_domain/$match_username/}) {
621: $r->log_reason("Cookie not valid", $r->filename);
622: }
623: }
624: }
1.92 albertel 625: if ($access eq '1') {
626: $env{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
627: return HTTP_NOT_ACCEPTABLE;
628: }
629: if ($access eq 'A') {
630: &Apache::restrictedaccess::setup_handler($r);
631: return OK;
632: }
1.103 raeburn 633: if ($access eq 'B') {
634: &Apache::blockedaccess::setup_handler($r);
635: return OK;
636: }
1.92 albertel 637: if (($access ne '2') && ($access ne 'F')) {
1.130 raeburn 638: if ($requrl =~ m{^/res/}) {
639: $access = &Apache::lonnet::allowed('bro',$requrl);
640: if ($access ne 'F') {
1.132 raeburn 641: if ($requrl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
642: $access = &Apache::lonnet::allowed('bre','/res/lib/templates/simpleproblem.problem');
643: if ($access ne 'F') {
644: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
645: return HTTP_NOT_ACCEPTABLE;
646: }
647: } else {
648: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
649: return HTTP_NOT_ACCEPTABLE;
650: }
1.130 raeburn 651: }
1.160 raeburn 652: } elsif (($handle =~ /^publicuser_\d+$/) && (&Apache::lonnet::is_portfolio_url($requrl))) {
653: my $clientip = $r->get_remote_host();
654: if (&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip) ne 'F') {
655: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
656: return HTTP_NOT_ACCEPTABLE;
657: }
1.130 raeburn 658: } else {
659: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
660: return HTTP_NOT_ACCEPTABLE;
661: }
1.37 albertel 662: }
1.92 albertel 663: }
664: if ($requrl =~ m|^/prtspool/|) {
665: my $start='/prtspool/'.$env{'user.name'}.'_'.
666: $env{'user.domain'};
667: if ($requrl !~ /^\Q$start\E/) {
668: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
669: return HTTP_NOT_ACCEPTABLE;
1.67 albertel 670: }
1.92 albertel 671: }
1.109 banghart 672: if ($requrl =~ m|^/zipspool/|) {
1.110 banghart 673: my $start='/zipspool/zipout/'.$env{'user.name'}.":".
1.109 banghart 674: $env{'user.domain'};
675: if ($requrl !~ /^\Q$start\E/) {
676: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
677: return HTTP_NOT_ACCEPTABLE;
678: }
679: }
1.92 albertel 680: if ($env{'user.name'} eq 'public' &&
681: $env{'user.domain'} eq 'public' &&
682: $requrl !~ m{^/+(res|public|uploaded)/} &&
683: $requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x &&
1.128 droeschl 684: $requrl !~ m{^/adm/blockingstatus/.*$} &&
1.92 albertel 685: $requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) {
686: $env{'request.querystring'}=$r->args;
687: $env{'request.firsturl'}=$requrl;
688: return FORBIDDEN;
689: }
1.23 www 690: # ------------------------------------------------------------- This is allowed
1.92 albertel 691: if ($env{'request.course.id'}) {
1.24 www 692: &Apache::lonnet::countacc($requrl);
1.92 albertel 693: $requrl=~/\.(\w+)$/;
1.125 raeburn 694: my $query=$r->args;
1.92 albertel 695: if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
1.133 raeburn 696: ($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) ||
1.92 albertel 697: ($requrl=~/^\/adm\/wrapper\//) ||
698: ($requrl=~m|^/adm/coursedocs/showdoc/|) ||
699: ($requrl=~m|\.problem/smpedit$|) ||
1.133 raeburn 700: ($requrl=~/^\/public\/.*\/syllabus$/) ||
1.134 raeburn 701: ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) ||
1.166 raeburn 702: ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/) ||
1.167 raeburn 703: ($requrl=~m{^/adm/$cdom/$cnum/\d+/ext\.tool$})) {
1.23 www 704: # ------------------------------------- This is serious stuff, get symb and log
1.92 albertel 705: my $symb;
706: if ($query) {
1.141 raeburn 707: &Apache::loncommon::get_unprocessed_cgi($query,['symb','folderpath']);
1.92 albertel 708: }
709: if ($env{'form.symb'}) {
1.64 albertel 710: $symb=&Apache::lonnet::symbclean($env{'form.symb'});
1.92 albertel 711: if ($requrl =~ m|^/adm/wrapper/|
1.72 albertel 712: || $requrl =~ m|^/adm/coursedocs/showdoc/|) {
1.92 albertel 713: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
714: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
1.63 albertel 715: 'last_known' =>[$murl,$mid]);
1.92 albertel 716: } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) ||
1.53 albertel 717: (($requrl=~m|(.*)/smpedit$|) &&
1.134 raeburn 718: &Apache::lonnet::symbverify($symb,$1)) ||
719: (($requrl=~m|(.*/aboutme)/portfolio$|) &&
720: &Apache::lonnet::symbverify($symb,$1))) {
1.92 albertel 721: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
722: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
723: 'last_known' =>[$murl,$mid]);
1.31 www 724: } else {
725: $r->log_reason('Invalid symb for '.$requrl.': '.
1.92 albertel 726: $symb);
727: $env{'user.error.msg'}=
728: "$requrl:bre:1:1:Invalid Access";
729: return HTTP_NOT_ACCEPTABLE;
730: }
731: } else {
1.134 raeburn 732: if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) {
733: $requrl = $1;
734: }
1.141 raeburn 735: unless ($suppext) {
736: $symb=&Apache::lonnet::symbread($requrl);
737: if (&Apache::lonnet::is_on_map($requrl) && $symb &&
738: !&Apache::lonnet::symbverify($symb,$requrl)) {
739: $r->log_reason('Invalid symb for '.$requrl.': '.$symb);
740: $env{'user.error.msg'}=
741: "$requrl:bre:1:1:Invalid Access";
742: return HTTP_NOT_ACCEPTABLE;
743: }
744: if ($symb) {
745: my ($map,$mid,$murl)=
746: &Apache::lonnet::decode_symb($symb);
747: &Apache::lonnet::symblist($map,$murl =>[$murl,$mid],
748: 'last_known' =>[$murl,$mid]);
749: }
1.61 albertel 750: }
1.92 albertel 751: }
752: $env{'request.symb'}=$symb;
753: &Apache::lonnet::courseacclog($symb);
754: } else {
1.23 www 755: # ------------------------------------------------------- This is other content
1.92 albertel 756: &Apache::lonnet::courseacclog($requrl);
757: }
1.140 raeburn 758: if ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/.+\.html?$}) {
1.125 raeburn 759: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
760: if ($query) {
761: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit']);
762: if ($env{'form.forceedit'}) {
763: $env{'request.state'} = 'edit';
764: }
765: }
766: }
1.144 raeburn 767: } elsif ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/portfolio/syllabus/.+\.html?$}) {
768: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
769: if ($query) {
770: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit','editmode']);
771: if (($env{'form.forceedit'}) || ($env{'form.editmode'})) {
772: $env{'request.state'} = 'edit';
773: }
774: }
775: }
1.125 raeburn 776: }
1.88 albertel 777: }
1.92 albertel 778: return OK;
1.137 raeburn 779: } else {
780: my $defdom=$r->dir_config('lonDefDomain');
781: ($is_balancer,$otherserver) =
782: &Apache::lonnet::check_loadbalancing(undef,$defdom);
783: if ($is_balancer) {
784: $r->set_handlers('PerlResponseHandler'=>
785: [\&Apache::switchserver::handler]);
786: if ($otherserver ne '') {
787: $env{'form.otherserver'} = $otherserver;
788: }
789: }
1.92 albertel 790: }
1.21 www 791: # -------------------------------------------- See if this is a public resource
1.68 albertel 792: if ($requrl=~m|^/+adm/+help/+|) {
1.89 albertel 793: return OK;
1.68 albertel 794: }
1.90 albertel 795: # ------------------------------------ See if this is a viewable portfolio file
1.89 albertel 796: if (&Apache::lonnet::is_portfolio_url($requrl)) {
1.160 raeburn 797: my $clientip = $r->get_remote_host();
798: my $access=&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip);
1.90 albertel 799: if ($access eq 'A') {
800: &Apache::restrictedaccess::setup_handler($r);
801: return OK;
802: }
803: if (($access ne '2') && ($access ne 'F')) {
804: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
805: return HTTP_NOT_ACCEPTABLE;
806: }
1.79 raeburn 807: }
1.87 albertel 808:
1.34 www 809: # -------------------------------------------------------------- Not authorized
810: $requrl=~/\.(\w+)$/;
1.62 albertel 811: # if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
812: # ($requrl=~/^\/adm\/(roles|logout|email|menu|remote)/) ||
813: # ($requrl=~m|^/prtspool/|)) {
1.34 www 814: # -------------------------- Store where they wanted to go and get login screen
1.64 albertel 815: $env{'request.querystring'}=$r->args;
816: $env{'request.firsturl'}=$requrl;
1.34 www 817: return FORBIDDEN;
1.62 albertel 818: # } else {
1.34 www 819: # --------------------------------------------------------------------- Goodbye
1.62 albertel 820: # return HTTP_BAD_REQUEST;
821: # }
1.1 albertel 822: }
823:
824: 1;
825: __END__
1.120 jms 826:
1.121 jms 827: =pod
1.120 jms 828:
1.121 jms 829: =back
1.120 jms 830:
1.121 jms 831: =cut
1.120 jms 832:
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