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Annotation of loncom/auth/publiccheck.pm, revision 1.12

1.1       albertel    1: # The LearningOnline Network
                      2: # Cookie Based Access Handler
                      3: #
1.12    ! raeburn     4: # $Id: publiccheck.pm,v 1.11 2006/11/23 01:49:41 albertel Exp $
1.1       albertel    5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
                     28: ###
                     29: 
                     30: package Apache::publiccheck;
                     31: 
                     32: use strict;
                     33: use Apache::Constants qw(:common :http :methods);
                     34: use Apache::lonnet;
                     35: use Apache::loncommon();
                     36: use Apache::lonlocal;
                     37: use CGI::Cookie();
                     38: use Fcntl qw(:flock);
1.2       albertel   39: use Apache::lonacc();
1.1       albertel   40: 
                     41: sub handler {
                     42:     my $r = shift;
1.8       albertel   43: 
1.1       albertel   44:     my $requrl=$r->uri;
                     45:     my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
                     46:     my $lonid=$cookies{'lonID'};
                     47:     if ($lonid) {
1.11      albertel   48: 	my $handle=&LONCAPA::clean_handle($lonid->value);
1.1       albertel   49:         my $lonidsdir=$r->dir_config('lonIDsDir');
                     50:         if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
                     51: 	    &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
                     52: 	    if ($env{'user.name'} ne 'public'
                     53: 		&& $env{'user.domain'} ne 'public') {
                     54: 		return OK;
                     55: 	    }
                     56: 	}
                     57:     }
                     58:     if ($requrl=~m|^/public/|
1.4       albertel   59: 	|| $requrl=~m|^/adm/help/.*\.hlp$|
1.10      albertel   60: 	|| $requrl=~m|^/adm/[^/]+/[^/]+/aboutme/portfolio$|
1.1       albertel   61: 	|| (&Apache::lonnet::metadata($requrl,'copyright') eq 'public')) {
1.3       raeburn    62:         &process_public($r,$requrl);
1.1       albertel   63:         return OK;
1.8       albertel   64:     } elsif (&Apache::lonnet::is_portfolio_url($requrl)) {
1.7       albertel   65: 	my (undef,$udom,$unum,$file_name,$group) = 
1.8       albertel   66: 	    &Apache::lonnet::parse_portfolio_url($requrl);
1.7       albertel   67:         my $access = &process_portfolio($udom,$unum,$file_name,$group);
1.5       raeburn    68:         if ($access) {
                     69:             &process_public($r,$requrl,$access);
1.3       raeburn    70:             return OK;
                     71:         } 
1.5       raeburn    72:     } elsif ($requrl eq '/adm/restrictedaccess') {
                     73:         &process_public($r,$requrl);
1.8       albertel   74: 	return OK;
1.12    ! raeburn    75:     } elsif ($requrl eq '/adm/blockedaccess') {
        !            76:        &process_public($r,$requrl);
        !            77:        return OK;
1.5       raeburn    78:     } 
1.1       albertel   79:     return DECLINED;
                     80: }
                     81: 
1.3       raeburn    82: sub process_public {
1.5       raeburn    83:     my ($r,$requrl,$access) = @_;
1.3       raeburn    84:     &Apache::lonnet::logthis('Granting public access: '.$requrl);
                     85:     if ($env{'user.name'} ne 'public' && $env{'user.domain'} ne 'public') {
                     86:         my $cookie=&Apache::lonauth::success($r,'public','public','public');
                     87:         my $lonidsdir=$r->dir_config('lonIDsDir');
                     88:         &Apache::lonnet::transfer_profile_to_env($lonidsdir,$cookie);
1.9       albertel   89: 	$r->err_header_out('Set-cookie',"lonID=$cookie; path=/");
1.3       raeburn    90:     }
                     91:     &Apache::lonacc::get_posted_cgi($r);
                     92:     $env{'request.state'} = "published";
                     93:     $env{'request.publicaccess'} = 1;
                     94:     $env{'request.filename'} = $r->filename;
                     95:     return;
                     96: }
                     97: 
                     98: sub process_portfolio {
                     99:     my ($udom,$unum,$file_name,$group) = @_;
                    100:     my $current_perms = &Apache::lonnet::get_portfile_permissions($udom,$unum);
                    101:     my %access_controls = &Apache::lonnet::get_access_controls($current_perms,$group,$file_name);
1.5       raeburn   102:     my $access = '';
1.3       raeburn   103:     my $now = time;
                    104:     foreach my $key (keys(%{$access_controls{$file_name}})) {
                    105:         my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
                    106:         if ($start > $now) {
                    107:             next;
                    108:         }
                    109:         if ($end && $end<$now) {
                    110:             next;
                    111:         }
                    112:         if ($scope eq 'public') {
1.5       raeburn   113:             $access = 'public';
1.3       raeburn   114:             last;
                    115:         }
1.5       raeburn   116:         if ($scope eq 'guest') {
                    117:             $access = 'guest';
                    118:         }
1.3       raeburn   119:     }
1.5       raeburn   120:     return $access;
1.3       raeburn   121: }
                    122: 
1.1       albertel  123: 1;
                    124: 
                    125: __END__