Annotation of loncom/auth/lonacc.pm, revision 1.185
1.1 albertel 1: # The LearningOnline Network
2: # Cookie Based Access Handler
1.22 www 3: #
1.185 ! raeburn 4: # $Id: lonacc.pm,v 1.184 2020/12/18 15:23:03 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();
1.175 raeburn 105: use Apache::lonprotected();
1.16 www 106: use Fcntl qw(:flock);
1.141 raeburn 107: use LONCAPA qw(:DEFAULT :match);
1.1 albertel 108:
1.75 albertel 109: sub cleanup {
110: my ($r)=@_;
111: if (! $r->is_initial_req()) { return DECLINED; }
112: &Apache::lonnet::save_cache();
113: return OK;
114: }
115:
116: sub goodbye {
117: my ($r)=@_;
118: &Apache::lonnet::goodbye();
119: return DONE;
120: }
121:
1.76 albertel 122: ###############################################
123:
124: sub get_posted_cgi {
1.114 raeburn 125: my ($r,$fields) = @_;
1.76 albertel 126:
127: my $buffer;
128: if ($r->header_in('Content-length')) {
129: $r->read($buffer,$r->header_in('Content-length'),0);
130: }
1.113 albertel 131: my $content_type = $r->header_in('Content-type');
132: if ($content_type !~ m{^multipart/form-data}) {
1.76 albertel 133: my @pairs=split(/&/,$buffer);
134: my $pair;
135: foreach $pair (@pairs) {
136: my ($name,$value) = split(/=/,$pair);
137: $value =~ tr/+/ /;
138: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
139: $name =~ tr/+/ /;
140: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.114 raeburn 141: if (ref($fields) eq 'ARRAY') {
142: next if (!grep(/^\Q$name\E$/,@{$fields}));
143: }
1.77 albertel 144: &Apache::loncommon::add_to_env("form.$name",$value);
1.76 albertel 145: }
146: } else {
1.113 albertel 147: my ($contentsep) = ($content_type =~ /boundary=\"?([^\";,]+)\"?/);
1.76 albertel 148: my @lines = split (/\n/,$buffer);
149: my $name='';
150: my $value='';
151: my $fname='';
152: my $fmime='';
153: my $i;
154: for ($i=0;$i<=$#lines;$i++) {
1.113 albertel 155: if ($lines[$i]=~/^--\Q$contentsep\E/) {
1.76 albertel 156: if ($name) {
1.139 raeburn 157: chomp($value);
158: if (($r->uri eq '/adm/portfolio') &&
159: ($name eq 'uploaddoc')) {
160: if (length($value) == 1) {
161: $value=~s/[\r\n]$//;
162: }
1.168 raeburn 163: } elsif ($fname =~ /\.(xls|doc|ppt)(x|m)$/i) {
1.154 raeburn 164: $value=~s/[\r\n]$//;
1.139 raeburn 165: }
1.114 raeburn 166: if (ref($fields) eq 'ARRAY') {
167: next if (!grep(/^\Q$name\E$/,@{$fields}));
168: }
1.118 raeburn 169: if ($fname) {
170: if ($env{'form.symb'} ne '') {
171: my $size = (length($value))/(1024.0 * 1024.0);
172: if (&upload_size_allowed($name,$size,$fname) eq 'ok') {
173: $env{"form.$name.filename"}=$fname;
174: $env{"form.$name.mimetype"}=$fmime;
175: &Apache::loncommon::add_to_env("form.$name",$value);
176: }
177: } else {
178: $env{"form.$name.filename"}=$fname;
179: $env{"form.$name.mimetype"}=$fmime;
180: &Apache::loncommon::add_to_env("form.$name",$value);
181: }
182: } else {
183: $value=~s/\s+$//s;
184: &Apache::loncommon::add_to_env("form.$name",$value);
185: }
1.76 albertel 186: }
187: if ($i<$#lines) {
188: $i++;
189: $lines[$i]=~
190: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
191: $name=$1;
192: $value='';
193: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
194: $fname=$1;
195: if
196: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
197: $fmime=$1;
198: $i++;
199: } else {
200: $fmime='';
201: }
202: } else {
203: $fname='';
204: $fmime='';
205: }
1.162 damieng 206: if ($i<$#lines && $lines[$i+1]=~/^Content\-Type\:\s*([\w\-\/]+)/i) {
207: # TODO: something with $1 !
208: $i++;
209: }
210: if ($i<$#lines && $lines[$i+1]=~/^Content\-transfer\-encoding\:\s*([\w\-\/]+)/i) {
211: # TODO: something with $1 !
212: $i++;
213: }
1.76 albertel 214: $i++;
215: }
216: } else {
217: $value.=$lines[$i]."\n";
218: }
219: }
220: }
221: #
222: # Digested POSTed values
223: #
224: # Remember the way this was originally done (GET or POST)
225: #
226: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
227: #
228: # There may also be stuff in the query string
229: # Tell subsequent handlers that this was GET, not POST, so they can access query string.
230: # Also, unset POSTed content length to cover all tracks.
231: #
232:
233: $r->method_number(M_GET);
234:
235: $r->method('GET');
236: $r->headers_in->unset('Content-length');
237: }
238:
1.121 jms 239: =pod
240:
1.146 raeburn 241: =over
242:
1.121 jms 243: =item upload_size_allowed()
244:
245: Perform size checks for file uploads to essayresponse items in course context.
246:
247: Add form.HWFILESIZE.$part_$id to %env with file size (MB)
248: If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env.
249:
250: =cut
1.118 raeburn 251:
252: sub upload_size_allowed {
253: my ($name,$size,$fname) = @_;
254: if ($name =~ /^HWFILE(\w+)$/) {
255: my $ident = $1;
256: my $item = 'HWFILESIZE'.$ident;
1.122 raeburn 257: my $savesize = sprintf("%.6f",$size);
258: &Apache::loncommon::add_to_env("form.$item",$savesize);
1.118 raeburn 259: my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize");
260: if (!$maxsize) {
1.123 raeburn 261: $maxsize = 10.0; # FIXME This should become a domain configuration.
1.118 raeburn 262: }
263: if ($size > $maxsize) {
264: my $warn = 'HWFILETOOBIG'.$ident;
265: &Apache::loncommon::add_to_env("form.$warn",$fname);
266: return;
267: }
268: }
269: return 'ok';
270: }
271:
1.121 jms 272: =pod
273:
274: =item sso_login()
275:
276: handle the case of the single sign on user, at this point $r->user
1.150 raeburn 277: will be set and valid; now need to find the loncapa user info, and possibly
1.149 raeburn 278: balance them. If $r->user() is set this means either it was either set by
1.150 raeburn 279: SSO or by checkauthen.pm, if a valid cookie was found. The latter case can
280: be identified by the third arg ($usename), except when lonacc is called in
281: an internal redirect to /adm/switchserver (e.g., load-balancing following
282: successful authentication) -- no cookie set yet. For that particular case
283: simply skip the call to sso_login().
1.149 raeburn 284:
285: returns OK if it was SSO and user was handled.
286: returns undef if not SSO or no means to handle the user.
1.121 jms 287:
288: =cut
1.117 jms 289:
1.94 albertel 290: sub sso_login {
1.149 raeburn 291: my ($r,$handle,$username) = @_;
1.94 albertel 292:
1.156 raeburn 293: if (($r->user eq '') || ($username ne '') || ($r->user eq 'public:public') ||
1.143 raeburn 294: (defined($env{'user.name'}) && (defined($env{'user.domain'}))
295: && ($handle ne ''))) {
1.94 albertel 296: # not an SSO case or already logged in
297: return undef;
298: }
299:
1.161 raeburn 300: my ($user) = ($r->user =~ m/^($match_username)$/);
301: if ($user eq '') {
302: return undef;
303: }
1.97 albertel 304:
1.126 raeburn 305: my $query = $r->args;
306: my %form;
307: if ($query) {
1.145 raeburn 308: my @items = ('role','symb','iptoken');
1.127 raeburn 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};
1.126 raeburn 313: }
314: }
315: }
316:
1.145 raeburn 317: my %sessiondata;
318: if ($form{'iptoken'}) {
319: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
1.158 raeburn 320: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
321: unless ($sessiondata{'sessionserver'}) {
322: delete($form{'iptoken'});
323: }
1.145 raeburn 324: }
325:
1.136 raeburn 326: my $domain = $r->dir_config('lonSSOUserDomain');
327: if ($domain eq '') {
328: $domain = $r->dir_config('lonDefDomain');
329: }
1.97 albertel 330: my $home=&Apache::lonnet::homeserver($user,$domain);
1.94 albertel 331: if ($home !~ /(con_lost|no_host|no_such_host)/) {
1.107 albertel 332: &Apache::lonnet::logthis(" SSO authorized user $user ");
1.145 raeburn 333: my ($is_balancer,$otherserver,$hosthere);
334: if ($form{'iptoken'}) {
1.158 raeburn 335: if (($sessiondata{'domain'} eq $domain) &&
336: ($sessiondata{'username'} eq $user)) {
1.145 raeburn 337: $hosthere = 1;
338: }
339: }
340: unless ($hosthere) {
341: ($is_balancer,$otherserver) =
1.165 raeburn 342: &Apache::lonnet::check_loadbalancing($user,$domain,'login');
343: if ($is_balancer) {
1.171 raeburn 344: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
345: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
346: if (($found_server) && ($balancer_cookie =~ /^\Q$domain\E_\Q$user\E_/)) {
347: $otherserver = $found_server;
348: } elsif ($otherserver eq '') {
1.165 raeburn 349: my $lowest_load;
350: ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($domain);
351: if ($lowest_load > 100) {
352: $otherserver = &Apache::lonnet::spareserver($lowest_load,$lowest_load,1,$domain);
353: }
1.171 raeburn 354: if ($otherserver ne '') {
355: my @hosts = &Apache::lonnet::current_machine_ids();
356: if (grep(/^\Q$otherserver\E$/,@hosts)) {
357: $hosthere = $otherserver;
358: }
1.165 raeburn 359: }
360: }
361: }
1.145 raeburn 362: }
1.165 raeburn 363: if (($is_balancer) && (!$hosthere)) {
1.136 raeburn 364: # login but immediately go to switch server to find us a new
1.94 albertel 365: # machine
1.127 raeburn 366: &Apache::lonauth::success($r,$user,$domain,$home,'noredirect');
1.172 raeburn 367: foreach my $item (keys(%form)) {
368: $env{'form.'.$item} = $form{$item};
369: }
370: unless ($form{'symb'}) {
371: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
372: $env{'form.origurl'} = $r->uri;
373: }
374: }
1.105 raeburn 375: $env{'request.sso.login'} = 1;
1.106 raeburn 376: if (defined($r->dir_config("lonSSOReloginServer"))) {
377: $env{'request.sso.reloginserver'} =
378: $r->dir_config('lonSSOReloginServer');
379: }
1.137 raeburn 380: my $redirecturl = '/adm/switchserver';
381: if ($otherserver ne '') {
382: $redirecturl .= '?otherserver='.$otherserver;
383: }
384: $r->internal_redirect($redirecturl);
1.101 albertel 385: $r->set_handlers('PerlHandler'=> undef);
1.94 albertel 386: } else {
387: # need to login them in, so generate the need data that
388: # migrate expects to do login
1.184 raeburn 389: my $ip = &Apache::lonnet::get_requestor_ip($r);
1.147 raeburn 390: my %info=('ip' => $ip,
1.94 albertel 391: 'domain' => $domain,
1.97 albertel 392: 'username' => $user,
1.94 albertel 393: 'server' => $r->dir_config('lonHostID'),
394: 'sso.login' => 1
395: );
1.158 raeburn 396: foreach my $item ('role','symb','iptoken') {
1.126 raeburn 397: if (exists($form{$item})) {
398: $info{$item} = $form{$item};
399: }
400: }
1.151 raeburn 401: unless ($info{'symb'}) {
1.152 raeburn 402: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
1.151 raeburn 403: $info{'origurl'} = $r->uri;
404: }
405: }
1.116 raeburn 406: if ($r->dir_config("ssodirecturl") == 1) {
407: $info{'origurl'} = $r->uri;
408: }
1.106 raeburn 409: if (defined($r->dir_config("lonSSOReloginServer"))) {
410: $info{'sso.reloginserver'} =
411: $r->dir_config('lonSSOReloginServer');
412: }
1.165 raeburn 413: if (($is_balancer) && ($hosthere)) {
414: $info{'noloadbalance'} = $hosthere;
415: }
1.94 albertel 416: my $token =
417: &Apache::lonnet::tmpput(\%info,
418: $r->dir_config('lonHostID'));
419: $env{'form.token'} = $token;
420: $r->internal_redirect('/adm/migrateuser');
1.101 albertel 421: $r->set_handlers('PerlHandler'=> undef);
1.94 albertel 422: }
423: return OK;
1.155 raeburn 424: } else {
1.107 albertel 425: &Apache::lonnet::logthis(" SSO authorized unknown user $user ");
1.115 raeburn 426: my @cancreate;
427: my %domconfig =
428: &Apache::lonnet::get_dom('configuration',['usercreation'],$domain);
429: if (ref($domconfig{'usercreation'}) eq 'HASH') {
430: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
431: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
432: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
433: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
434: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
435: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
436: }
437: }
438: }
1.155 raeburn 439: if ((grep(/^sso$/,@cancreate)) || (defined($r->dir_config('lonSSOUserUnknownRedirect')))) {
440: $r->subprocess_env->set('SSOUserUnknown' => $user);
441: $r->subprocess_env->set('SSOUserDomain' => $domain);
442: if (grep(/^sso$/,@cancreate)) {
443: $r->set_handlers('PerlHandler'=> [\&Apache::createaccount::handler]);
444: $r->handler('perl-script');
445: } else {
446: $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect'));
447: $r->set_handlers('PerlHandler'=> undef);
448: }
449: return OK;
1.115 raeburn 450: }
1.94 albertel 451: }
452: return undef;
453: }
454:
1.1 albertel 455: sub handler {
456: my $r = shift;
457: my $requrl=$r->uri;
1.149 raeburn 458:
459: if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) {
1.108 raeburn 460: return OK;
461: }
1.70 albertel 462:
1.149 raeburn 463: if (&Apache::lonnet::is_domainimage($requrl)) {
1.124 raeburn 464: return OK;
465: }
466:
1.149 raeburn 467: my %user;
468: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
1.93 albertel 469:
1.150 raeburn 470: unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) {
471: my $result = &sso_login($r,$handle,$user{'name'});
472: if (defined($result)) {
473: return $result;
474: }
1.70 albertel 475: }
476:
1.137 raeburn 477: my ($is_balancer,$otherserver);
1.142 raeburn 478:
1.92 albertel 479: if ($handle eq '') {
1.159 raeburn 480: unless ((($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) ||
481: ($requrl =~ m{^/public/$match_domain/$match_courseid/syllabus}) ||
482: ($requrl =~ m{^/adm/help/}) ||
483: ($requrl =~ m{^/res/$match_domain/$match_username/})) {
1.149 raeburn 484: $r->log_reason("Cookie not valid", $r->filename);
1.142 raeburn 485: }
1.111 albertel 486: } elsif ($handle ne '') {
1.6 www 487:
1.46 www 488: # ------------------------------------------------------ Initialize Environment
1.111 albertel 489: my $lonidsdir=$r->dir_config('lonIDsDir');
1.92 albertel 490: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
1.47 www 491:
492: # --------------------------------------------------------- Initialize Language
493:
1.92 albertel 494: &Apache::lonlocal::get_language_handle($r);
495:
496: }
1.46 www 497:
1.92 albertel 498: # -------------------------------------------------- Should be a valid user now
499: if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') {
1.46 www 500: # -------------------------------------------------------------- Resource State
1.6 www 501:
1.141 raeburn 502: my ($cdom,$cnum);
503: if ($env{'request.course.id'}) {
504: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
505: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
506: }
1.92 albertel 507: if ($requrl=~/^\/+(res|uploaded)\//) {
508: $env{'request.state'} = "published";
509: } else {
510: $env{'request.state'} = 'unknown';
511: }
512: $env{'request.filename'} = $r->filename;
513: $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);
1.157 raeburn 514: my ($suppext,$checkabsolute);
1.129 raeburn 515: if ($requrl =~ m{^/adm/wrapper/ext/}) {
516: my $query = $r->args;
517: if ($query) {
518: my $preserved;
519: foreach my $pair (split(/&/,$query)) {
520: my ($name, $value) = split(/=/,$pair);
1.174 raeburn 521: unless (($name eq 'symb') || ($name eq 'usehttp')) {
1.129 raeburn 522: $preserved .= $pair.'&';
523: }
1.141 raeburn 524: if (($env{'request.course.id'}) && ($name eq 'folderpath')) {
525: if ($value =~ /^supplemental/) {
526: $suppext = 1;
527: }
528: }
1.129 raeburn 529: }
530: $preserved =~ s/\&$//;
531: if ($preserved) {
532: $env{'request.external.querystring'} = $preserved;
533: }
534: }
1.157 raeburn 535: if ($env{'request.course.id'}) {
536: $checkabsolute = 1;
537: }
1.141 raeburn 538: } elsif ($env{'request.course.id'} &&
539: (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) ||
1.166 raeburn 540: ($requrl eq "/public/$cdom/$cnum/syllabus") ||
1.167 raeburn 541: ($requrl =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}))) {
1.141 raeburn 542: my $query = $r->args;
543: if ($query) {
544: foreach my $pair (split(/&/,$query)) {
545: my ($name, $value) = split(/=/,$pair);
546: if ($name eq 'folderpath') {
547: if ($value =~ /^supplemental/) {
548: $suppext = 1;
549: }
1.180 raeburn 550: last;
1.141 raeburn 551: }
552: }
553: }
1.157 raeburn 554: if ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}) {
555: $checkabsolute = 1;
556: }
557: }
558: if ($checkabsolute) {
559: my $hostname = $r->hostname();
560: my $lonhost = &Apache::lonnet::host_from_dns($hostname);
561: if ($lonhost) {
562: my $actual = &Apache::lonnet::absolute_url($hostname);
1.173 raeburn 563: my $exphostname = &Apache::lonnet::hostname($lonhost);
1.157 raeburn 564: my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
565: unless ($actual eq $expected) {
566: $env{'request.use_absolute'} = $expected;
567: }
568: }
1.129 raeburn 569: }
1.6 www 570: # -------------------------------------------------------- Load POST parameters
571:
1.92 albertel 572: &Apache::lonacc::get_posted_cgi($r);
1.6 www 573:
1.137 raeburn 574: # ------------------------------------------------------ Check if load balancer
575:
1.138 raeburn 576: my $checkexempt;
577: if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) {
578: if ($env{'user.loadbalcheck.time'} + 600 > time) {
1.171 raeburn 579: $checkexempt = 1;
1.138 raeburn 580: }
581: }
1.145 raeburn 582: if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) {
583: $checkexempt = 1;
584: }
1.183 raeburn 585: unless (($checkexempt) || (($requrl eq '/adm/switchserver') && (!$r->is_initial_req()))) {
1.138 raeburn 586: ($is_balancer,$otherserver) =
587: &Apache::lonnet::check_loadbalancing($env{'user.name'},
588: $env{'user.domain'});
1.171 raeburn 589: if ($is_balancer) {
1.183 raeburn 590: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
591: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
592: if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
593: $otherserver = $found_server;
594: }
595: unless ($requrl eq '/adm/switchserver') {
596: $r->set_handlers('PerlResponseHandler'=>
597: [\&Apache::switchserver::handler]);
1.171 raeburn 598: }
599: if ($otherserver ne '') {
600: $env{'form.otherserver'} = $otherserver;
601: }
1.183 raeburn 602: unless (($env{'form.origurl'}) || ($r->uri eq '/adm/roles') ||
603: ($r->uri eq '/adm/switchserver') || ($r->uri eq '/adm/sso')) {
604: $env{'form.origurl'} = $r->uri;
605: }
1.152 raeburn 606: }
1.137 raeburn 607: }
1.169 raeburn 608: if ($requrl=~m{^/+tiny/+$match_domain/+\w+$}) {
1.178 raeburn 609: if ($env{'user.name'} eq 'public' &&
610: $env{'user.domain'} eq 'public') {
611: $env{'request.firsturl'}=$requrl;
612: return FORBIDDEN;
613: } else {
614: return OK;
615: }
1.169 raeburn 616: }
1.6 www 617: # ---------------------------------------------------------------- Check access
1.92 albertel 618: my $now = time;
1.185 ! raeburn 619: my ($check_symb,$check_access);
1.177 raeburn 620: if ($requrl !~ m{^/(?:adm|public|(?:prt|zip)spool)/}
1.95 albertel 621: || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) {
1.185 ! raeburn 622: $check_access = 1;
! 623: }
! 624: if (($env{'request.course.id'}) && (!$suppext)) {
! 625: $requrl=~/\.(\w+)$/;
! 626: if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
! 627: ($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) ||
! 628: ($requrl=~/^\/adm\/wrapper\//) ||
! 629: ($requrl=~m|^/adm/coursedocs/showdoc/|) ||
! 630: ($requrl=~m|\.problem/smpedit$|) ||
! 631: ($requrl=~/^\/public\/.*\/syllabus$/) ||
! 632: ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) ||
! 633: ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/) ||
! 634: ($requrl=~m{^/adm/$cdom/$cnum/\d+/ext\.tool$})) {
! 635: $check_symb = 1;
! 636: }
! 637: }
! 638: if ($check_access) {
1.179 raeburn 639: my ($access,$poss_symb);
1.180 raeburn 640: if ($check_symb) {
1.179 raeburn 641: if ($env{'form.symb'}) {
642: $poss_symb=&Apache::lonnet::symbclean($env{'form.symb'});
1.180 raeburn 643: } elsif (($env{'request.course.id'}) && ($r->args ne '')) {
644: my $query = $r->args;
645: foreach my $pair (split(/&/,$query)) {
646: my ($name, $value) = split(/=/,$pair);
1.181 raeburn 647: $name = &unescape($name);
648: $value =~ tr/+/ /;
649: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.180 raeburn 650: if ($name eq 'symb') {
651: $poss_symb = &Apache::lonnet::symbclean($value);
652: last;
653: }
654: }
1.179 raeburn 655: }
656: if ($poss_symb) {
657: my ($possmap,$resid,$url)=&Apache::lonnet::decode_symb($poss_symb);
658: $url = &Apache::lonnet::clutter($url);
659: unless (($url eq $requrl) && (&Apache::lonnet::is_on_map($possmap))) {
660: undef($poss_symb);
661: }
662: if ($poss_symb) {
663: if ((!$env{'request.role.adv'}) && ($env{'acc.randomout'}) &&
664: ($env{'acc.randomout'}=~/\&\Q$poss_symb\E\&/)) {
665: undef($poss_symb);
666: }
667: }
668: }
669: if ($poss_symb) {
670: $access=&Apache::lonnet::allowed('bre',$requrl,$poss_symb);
671: } else {
672: $access=&Apache::lonnet::allowed('bre',$requrl,'','','','',1);
673: }
674: } else {
675: $access=&Apache::lonnet::allowed('bre',$requrl);
676: }
1.159 raeburn 677: if ($handle eq '') {
678: unless ($access eq 'F') {
679: if ($requrl =~ m{^/res/$match_domain/$match_username/}) {
680: $r->log_reason("Cookie not valid", $r->filename);
681: }
682: }
683: }
1.92 albertel 684: if ($access eq '1') {
685: $env{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
686: return HTTP_NOT_ACCEPTABLE;
687: }
688: if ($access eq 'A') {
689: &Apache::restrictedaccess::setup_handler($r);
690: return OK;
691: }
1.103 raeburn 692: if ($access eq 'B') {
1.179 raeburn 693: if ($poss_symb) {
694: if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) {
695: $requrl = $1;
696: }
697: if (&Apache::lonnet::symbverify($poss_symb,$requrl)) {
698: $env{'request.symb'} = $poss_symb;
699: }
700: }
1.103 raeburn 701: &Apache::blockedaccess::setup_handler($r);
702: return OK;
703: }
1.175 raeburn 704: if ($access eq 'D') {
705: &Apache::lonprotected::setup_handler($r);
706: return OK;
707: }
1.92 albertel 708: if (($access ne '2') && ($access ne 'F')) {
1.130 raeburn 709: if ($requrl =~ m{^/res/}) {
710: $access = &Apache::lonnet::allowed('bro',$requrl);
711: if ($access ne 'F') {
1.132 raeburn 712: if ($requrl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
713: $access = &Apache::lonnet::allowed('bre','/res/lib/templates/simpleproblem.problem');
714: if ($access ne 'F') {
715: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
716: return HTTP_NOT_ACCEPTABLE;
717: }
718: } else {
719: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
720: return HTTP_NOT_ACCEPTABLE;
721: }
1.130 raeburn 722: }
1.160 raeburn 723: } elsif (($handle =~ /^publicuser_\d+$/) && (&Apache::lonnet::is_portfolio_url($requrl))) {
1.184 raeburn 724: my $clientip = &Apache::lonnet::get_requestor_ip($r);
1.160 raeburn 725: if (&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip) ne 'F') {
726: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
727: return HTTP_NOT_ACCEPTABLE;
728: }
1.130 raeburn 729: } else {
730: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
731: return HTTP_NOT_ACCEPTABLE;
732: }
1.37 albertel 733: }
1.92 albertel 734: }
735: if ($requrl =~ m|^/prtspool/|) {
736: my $start='/prtspool/'.$env{'user.name'}.'_'.
737: $env{'user.domain'};
738: if ($requrl !~ /^\Q$start\E/) {
739: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
740: return HTTP_NOT_ACCEPTABLE;
1.67 albertel 741: }
1.92 albertel 742: }
1.109 banghart 743: if ($requrl =~ m|^/zipspool/|) {
1.110 banghart 744: my $start='/zipspool/zipout/'.$env{'user.name'}.":".
1.109 banghart 745: $env{'user.domain'};
746: if ($requrl !~ /^\Q$start\E/) {
747: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
748: return HTTP_NOT_ACCEPTABLE;
749: }
750: }
1.92 albertel 751: if ($env{'user.name'} eq 'public' &&
752: $env{'user.domain'} eq 'public' &&
753: $requrl !~ m{^/+(res|public|uploaded)/} &&
754: $requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x &&
1.180 raeburn 755: $requrl !~ m{^/adm/blockingstatus/.*$} &&
1.92 albertel 756: $requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) {
757: $env{'request.querystring'}=$r->args;
758: $env{'request.firsturl'}=$requrl;
759: return FORBIDDEN;
760: }
1.23 www 761: # ------------------------------------------------------------- This is allowed
1.92 albertel 762: if ($env{'request.course.id'}) {
1.24 www 763: &Apache::lonnet::countacc($requrl);
1.125 raeburn 764: my $query=$r->args;
1.180 raeburn 765: if ($check_symb) {
1.23 www 766: # ------------------------------------- This is serious stuff, get symb and log
1.92 albertel 767: my $symb;
768: if ($query) {
1.141 raeburn 769: &Apache::loncommon::get_unprocessed_cgi($query,['symb','folderpath']);
1.92 albertel 770: }
771: if ($env{'form.symb'}) {
1.64 albertel 772: $symb=&Apache::lonnet::symbclean($env{'form.symb'});
1.176 raeburn 773: if ($requrl eq '/adm/navmaps') {
774: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
775: &Apache::lonnet::symblist($map,$murl => [$murl,$mid]);
776: } elsif ($requrl =~ m|^/adm/wrapper/|
1.72 albertel 777: || $requrl =~ m|^/adm/coursedocs/showdoc/|) {
1.92 albertel 778: my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
1.176 raeburn 779: if ($map =~ /\.page$/) {
780: my $mapsymb = &Apache::lonnet::symbread($map);
781: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
782: }
1.92 albertel 783: &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
1.63 albertel 784: 'last_known' =>[$murl,$mid]);
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($symb);
1.176 raeburn 791: if (($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: }
1.180 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: #
1.182 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 $requrl.
1.180 raeburn 821: #
1.182 raeburn 822: if (($env{'request.enc'} && !$encstate) || (!$env{'request.enc'} && $encstate)) {
1.180 raeburn 823: my %possibles;
824: my $nocache = 1;
1.182 raeburn 825: my $oldsymb = $symb;
1.180 raeburn 826: $symb = &Apache::lonnet::symbread($requrl,'','','',\%possibles,$nocache);
1.182 raeburn 827: if (($symb) && ($symb ne $oldsymb)) {
1.180 raeburn 828: if (&Apache::lonnet::symbverify($symb,$requrl)) {
1.182 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: }
1.179 raeburn 837: }
1.180 raeburn 838: } elsif (keys(%possibles) > 1) {
839: $r->internal_redirect('/adm/ambiguous');
840: return OK;
1.179 raeburn 841: }
1.180 raeburn 842: }
843: if ($invalidsymb) {
844: $r->log_reason('Invalid symb for '.$requrl.': '.$symb);
845: $env{'user.error.msg'}=
846: "$requrl:bre:1:1:Invalid Access";
847: return HTTP_NOT_ACCEPTABLE;
1.179 raeburn 848: }
849: }
1.180 raeburn 850: }
851: if ($symb) {
852: my ($map,$mid,$murl)=
853: &Apache::lonnet::decode_symb($symb);
854: if ($requrl eq '/adm/navmaps') {
855: &Apache::lonnet::symblist($map,$murl =>[$murl,$mid]);
856: } else {
857: if (($map =~ /\.page$/) && ($requrl !~ /\.page$/)) {
858: my $mapsymb = &Apache::lonnet::symbread($map);
859: ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
1.176 raeburn 860: }
1.180 raeburn 861: &Apache::lonnet::symblist($map,$murl =>[$murl,$mid],
862: 'last_known' =>[$murl,$mid]);
863: }
1.61 albertel 864: }
1.92 albertel 865: }
866: $env{'request.symb'}=$symb;
1.179 raeburn 867: if (($env{'request.symbread.cached.'}) && ($env{'request.symbread.cached.'} ne $symb)) {
868: $env{'request.symbread.cached.'} = $symb;
869: }
1.92 albertel 870: &Apache::lonnet::courseacclog($symb);
871: } else {
1.23 www 872: # ------------------------------------------------------- This is other content
1.92 albertel 873: &Apache::lonnet::courseacclog($requrl);
874: }
1.140 raeburn 875: if ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/.+\.html?$}) {
1.125 raeburn 876: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
877: if ($query) {
878: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit']);
879: if ($env{'form.forceedit'}) {
880: $env{'request.state'} = 'edit';
881: }
882: }
883: }
1.144 raeburn 884: } elsif ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/portfolio/syllabus/.+\.html?$}) {
885: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
886: if ($query) {
887: &Apache::loncommon::get_unprocessed_cgi($query,['forceedit','editmode']);
888: if (($env{'form.forceedit'}) || ($env{'form.editmode'})) {
889: $env{'request.state'} = 'edit';
890: }
891: }
892: }
1.125 raeburn 893: }
1.88 albertel 894: }
1.92 albertel 895: return OK;
1.137 raeburn 896: } else {
897: my $defdom=$r->dir_config('lonDefDomain');
898: ($is_balancer,$otherserver) =
899: &Apache::lonnet::check_loadbalancing(undef,$defdom);
900: if ($is_balancer) {
901: $r->set_handlers('PerlResponseHandler'=>
902: [\&Apache::switchserver::handler]);
903: if ($otherserver ne '') {
904: $env{'form.otherserver'} = $otherserver;
905: }
906: }
1.92 albertel 907: }
1.21 www 908: # -------------------------------------------- See if this is a public resource
1.68 albertel 909: if ($requrl=~m|^/+adm/+help/+|) {
1.89 albertel 910: return OK;
1.68 albertel 911: }
1.90 albertel 912: # ------------------------------------ See if this is a viewable portfolio file
1.89 albertel 913: if (&Apache::lonnet::is_portfolio_url($requrl)) {
1.184 raeburn 914: my $clientip = &Apache::lonnet::get_requestor_ip($r);
1.160 raeburn 915: my $access=&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip);
1.90 albertel 916: if ($access eq 'A') {
917: &Apache::restrictedaccess::setup_handler($r);
918: return OK;
919: }
920: if (($access ne '2') && ($access ne 'F')) {
921: $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
922: return HTTP_NOT_ACCEPTABLE;
923: }
1.79 raeburn 924: }
1.87 albertel 925:
1.34 www 926: # -------------------------------------------------------------- Not authorized
927: $requrl=~/\.(\w+)$/;
1.62 albertel 928: # if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
929: # ($requrl=~/^\/adm\/(roles|logout|email|menu|remote)/) ||
930: # ($requrl=~m|^/prtspool/|)) {
1.34 www 931: # -------------------------- Store where they wanted to go and get login screen
1.64 albertel 932: $env{'request.querystring'}=$r->args;
933: $env{'request.firsturl'}=$requrl;
1.34 www 934: return FORBIDDEN;
1.62 albertel 935: # } else {
1.34 www 936: # --------------------------------------------------------------------- Goodbye
1.62 albertel 937: # return HTTP_BAD_REQUEST;
938: # }
1.1 albertel 939: }
940:
941: 1;
942: __END__
1.120 jms 943:
1.121 jms 944: =pod
1.120 jms 945:
1.121 jms 946: =back
1.120 jms 947:
1.121 jms 948: =cut
1.120 jms 949:
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