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Annotation of loncom/auth/publiccheck.pm, revision 1.3

1.1       albertel    1: # The LearningOnline Network
                      2: # Cookie Based Access Handler
                      3: #
1.3     ! raeburn     4: # $Id: publiccheck.pm,v 1.2 2006/04/13 19:07:33 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;
                     43:     my $requrl=$r->uri;
                     44:     my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
                     45:     my $lonid=$cookies{'lonID'};
                     46:     if ($lonid) {
                     47: 	my $handle=$lonid->value;
                     48:         $handle=~s/\W//g;
                     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/|
                     59: 	|| (&Apache::lonnet::metadata($requrl,'copyright') eq 'public')) {
1.3     ! raeburn    60:         &process_public($r,$requrl);
1.1       albertel   61:         return OK;
1.3     ! raeburn    62:     } elsif ($requrl =~ m#/+uploaded/([^/]+)/([^/]+)/portfolio(/.+)$#) {
        !            63:         if (&process_portfolio($1,$2,$3)) {
        !            64:             &process_public($r,$requrl);
        !            65:             return OK;
        !            66:         } 
        !            67:     } elsif ($requrl =~ m#/+uploaded/([^/]+)/([^/]+)/groups/([^/]+)/portfolio/(.+)$#) {
        !            68:         if (&process_portfolio($1,$2,$3.'/'.$4,$3)) {
        !            69:             &process_public($r,$requrl);
        !            70:             return OK;
        !            71:         }
1.1       albertel   72:     }
                     73:     return DECLINED;
                     74: }
                     75: 
1.3     ! raeburn    76: sub process_public {
        !            77:     my ($r,$requrl) = @_;
        !            78:     &Apache::lonnet::logthis('Granting public access: '.$requrl);
        !            79:     if ($env{'user.name'} ne 'public' && $env{'user.domain'} ne 'public') {
        !            80:         my $cookie=&Apache::lonauth::success($r,'public','public','public');
        !            81:         my $lonidsdir=$r->dir_config('lonIDsDir');
        !            82:         &Apache::lonnet::transfer_profile_to_env($lonidsdir,$cookie);
        !            83:         $r->header_out('Set-cookie',"lonID=$cookie; path=/");
        !            84:     }
        !            85:     &Apache::lonacc::get_posted_cgi($r);
        !            86:     $env{'request.state'} = "published";
        !            87:     $env{'request.publicaccess'} = 1;
        !            88:     $env{'request.filename'} = $r->filename;
        !            89:     return;
        !            90: }
        !            91: 
        !            92: sub process_portfolio {
        !            93:     my ($udom,$unum,$file_name,$group) = @_;
        !            94:     my $current_perms = &Apache::lonnet::get_portfile_permissions($udom,$unum);
        !            95:     my %access_controls = &Apache::lonnet::get_access_controls($current_perms,$group,$file_name);
        !            96:     my $public_access = 0;
        !            97:     my $now = time;
        !            98:     foreach my $key (keys(%{$access_controls{$file_name}})) {
        !            99:         my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
        !           100:         if ($start > $now) {
        !           101:             next;
        !           102:         }
        !           103:         if ($end && $end<$now) {
        !           104:             next;
        !           105:         }
        !           106:         if ($scope eq 'public') {
        !           107:             $public_access = 1;
        !           108:             last;
        !           109:         }
        !           110:     }
        !           111:     return $public_access;
        !           112: }
        !           113: 
1.1       albertel  114: 1;
                    115: 
                    116: __END__