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Info for lonnet::allowed added early into the request cycle

    1: # The LearningOnline Network
    2: # Cookie Based Access Handler
    3: # 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11,
    4: # 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30 Gerd Kortemeyer
    5: 
    6: package Apache::lonacc;
    7: 
    8: use strict;
    9: use Apache::Constants qw(:common :http :methods);
   10: use Apache::File;
   11: use Apache::lonnet;
   12: use CGI::Cookie();
   13: 
   14: sub handler {
   15:     my $r = shift;
   16:     my $requrl=$r->uri;
   17:     my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
   18:     my $lonid=$cookies{'lonID'};
   19:     my $cookie;
   20:     if ($lonid) {
   21: 	my $handle=$lonid->value;
   22:         $handle=~s/\W//g;
   23:         my $lonidsdir=$r->dir_config('lonIDsDir');
   24:         if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
   25: 
   26: # ------------------------------------------- Transfer profile into environment
   27: 
   28:             my @profile;
   29: 	    {
   30:              my $idf=Apache::File->new("$lonidsdir/$handle.id");
   31:              @profile=<$idf>;
   32: 	    }
   33:             my $envi;
   34:             for ($envi=0;$envi<=$#profile;$envi++) {
   35: 		chomp($profile[$envi]);
   36: 		my ($envname,$envvalue)=split(/=/,$profile[$envi]);
   37:                 $ENV{$envname} = $envvalue;
   38:             }
   39:             $ENV{'user.environment'} = "$lonidsdir/$handle.id";
   40:             $ENV{'request.state'}    = "published";
   41:             $ENV{'request.filename'} = $r->filename;
   42:             $ENV{'HTTP_REFERER'}     = $r->header_in('Referer');
   43: 
   44: # -------------------------------------------------------- Load POST parameters
   45: 
   46: 
   47:            
   48:             my $buffer;
   49: 
   50:             $r->read($buffer,$r->header_in('Content-length'));
   51:             my @pairs=split(/&/,$buffer);
   52:             my $pair;
   53:             foreach $pair (@pairs) {
   54:                my ($name,$value) = split(/=/,$pair);
   55:                $value =~ tr/+/ /;
   56:                $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
   57:                $name  =~ tr/+/ /;
   58:                $name  =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
   59:                $ENV{"form.$name"}=$value;
   60:             }
   61: 
   62:             $r->method_number(M_GET);
   63: 	    $r->method('GET');
   64:             $r->headers_in->unset('Content-length');
   65: 
   66: # ---------------------------------------------------------------- Check access
   67: 
   68:             if ($requrl!~/^\/adm\//) {
   69: 		my $access=&Apache::lonnet::allowed('bre',$requrl);
   70:                 if ($access eq '1') {
   71: 		   $ENV{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
   72: 	           return HTTP_NOT_ACCEPTABLE; 
   73:                 }
   74:                 if (($access ne '2') && ($access ne 'F')) {
   75: 		   $ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
   76: 	           return HTTP_NOT_ACCEPTABLE; 
   77:                 }
   78:             } 
   79:             return OK; 
   80:         } else { 
   81:             $r->log_reason("Cookie $handle not valid", $r->filename) 
   82:         };
   83:     }
   84: 
   85: # ----------------------------------------------- Store where they wanted to go
   86: 
   87:     $ENV{'request.firsturl'}=$requrl;
   88:     return FORBIDDEN;
   89: }
   90: 
   91: 1;
   92: __END__