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Annotation of loncom/auth/publiccheck.pm, revision 1.4

1.1       albertel    1: # The LearningOnline Network
                      2: # Cookie Based Access Handler
                      3: #
1.4     ! albertel    4: # $Id: publiccheck.pm,v 1.3 2006/06/16 22:37:29 raeburn 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/|
1.4     ! albertel   59: 	|| $requrl=~m|^/adm/help/.*\.hlp$|
1.1       albertel   60: 	|| (&Apache::lonnet::metadata($requrl,'copyright') eq 'public')) {
1.3       raeburn    61:         &process_public($r,$requrl);
1.1       albertel   62:         return OK;
1.4     ! albertel   63:     } elsif ($requrl =~ m|/+uploaded/([^/]+)/([^/]+)/portfolio(/.+)$|) {
1.3       raeburn    64:         if (&process_portfolio($1,$2,$3)) {
                     65:             &process_public($r,$requrl);
                     66:             return OK;
                     67:         } 
1.4     ! albertel   68:     } elsif ($requrl =~ m|/+uploaded/([^/]+)/([^/]+)/groups/([^/]+)/portfolio/(.+)$|) {
1.3       raeburn    69:         if (&process_portfolio($1,$2,$3.'/'.$4,$3)) {
                     70:             &process_public($r,$requrl);
                     71:             return OK;
                     72:         }
1.1       albertel   73:     }
                     74:     return DECLINED;
                     75: }
                     76: 
1.3       raeburn    77: sub process_public {
                     78:     my ($r,$requrl) = @_;
                     79:     &Apache::lonnet::logthis('Granting public access: '.$requrl);
                     80:     if ($env{'user.name'} ne 'public' && $env{'user.domain'} ne 'public') {
                     81:         my $cookie=&Apache::lonauth::success($r,'public','public','public');
                     82:         my $lonidsdir=$r->dir_config('lonIDsDir');
                     83:         &Apache::lonnet::transfer_profile_to_env($lonidsdir,$cookie);
                     84:         $r->header_out('Set-cookie',"lonID=$cookie; path=/");
                     85:     }
                     86:     &Apache::lonacc::get_posted_cgi($r);
                     87:     $env{'request.state'} = "published";
                     88:     $env{'request.publicaccess'} = 1;
                     89:     $env{'request.filename'} = $r->filename;
                     90:     return;
                     91: }
                     92: 
                     93: sub process_portfolio {
                     94:     my ($udom,$unum,$file_name,$group) = @_;
                     95:     my $current_perms = &Apache::lonnet::get_portfile_permissions($udom,$unum);
                     96:     my %access_controls = &Apache::lonnet::get_access_controls($current_perms,$group,$file_name);
                     97:     my $public_access = 0;
                     98:     my $now = time;
                     99:     foreach my $key (keys(%{$access_controls{$file_name}})) {
                    100:         my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
                    101:         if ($start > $now) {
                    102:             next;
                    103:         }
                    104:         if ($end && $end<$now) {
                    105:             next;
                    106:         }
                    107:         if ($scope eq 'public') {
                    108:             $public_access = 1;
                    109:             last;
                    110:         }
                    111:     }
                    112:     return $public_access;
                    113: }
                    114: 
1.1       albertel  115: 1;
                    116: 
                    117: __END__