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Now take "multipart/form-data" forms for file upload

    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: # 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30,11/6,
    5: # 12/25 Gerd Kortemeyer
    6: 
    7: package Apache::lonacc;
    8: 
    9: use strict;
   10: use Apache::Constants qw(:common :http :methods);
   11: use Apache::File;
   12: use Apache::lonnet;
   13: use CGI::Cookie();
   14: 
   15: sub handler {
   16:     my $r = shift;
   17:     my $requrl=$r->uri;
   18:     my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
   19:     my $lonid=$cookies{'lonID'};
   20:     my $cookie;
   21:     if ($lonid) {
   22: 	my $handle=$lonid->value;
   23:         $handle=~s/\W//g;
   24:         my $lonidsdir=$r->dir_config('lonIDsDir');
   25:         if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
   26: 
   27: # ------------------------------------------- Transfer profile into environment
   28: 
   29:             my @profile;
   30: 	    {
   31:              my $idf=Apache::File->new("$lonidsdir/$handle.id");
   32:              @profile=<$idf>;
   33: 	    }
   34:             my $envi;
   35:             for ($envi=0;$envi<=$#profile;$envi++) {
   36: 		chomp($profile[$envi]);
   37: 		my ($envname,$envvalue)=split(/=/,$profile[$envi]);
   38:                 $ENV{$envname} = $envvalue;
   39:             }
   40:             $ENV{'user.environment'} = "$lonidsdir/$handle.id";
   41:             $ENV{'request.state'}    = "published";
   42:             $ENV{'request.filename'} = $r->filename;
   43: 
   44: # --------------------- Figure out referer, first from HTTP_REFERER, then cache
   45: 
   46:             my $referer='';
   47:             if ($referer=$r->header_in('Referer')) {
   48:                $ENV{'HTTP_REFERER'}=$referer;
   49: 	    } else {
   50: 	       $ENV{'HTTP_REFERER'}=$ENV{'httpref.'.$requrl};
   51: 	    }
   52: 
   53: # -------------------------------------------------------- Load POST parameters
   54: 
   55: 
   56:            
   57:         my $buffer;
   58: 
   59:         $r->read($buffer,$r->header_in('Content-length'));
   60: 
   61: 	unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
   62:             my @pairs=split(/&/,$buffer);
   63:             my $pair;
   64:             foreach $pair (@pairs) {
   65:                my ($name,$value) = split(/=/,$pair);
   66:                $value =~ tr/+/ /;
   67:                $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
   68:                $name  =~ tr/+/ /;
   69:                $name  =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
   70:                $ENV{"form.$name"}=$value;
   71:             }
   72:         } else {
   73: 	    my $contentsep=$1;
   74:             my @lines = split (/\n/,$buffer);
   75:             my $name='';
   76:             my $value='';
   77:             my $fname='';
   78:             my $fmime='';
   79:             my $i;
   80:             for ($i=0;$i<=$#lines;$i++) {
   81: 		if ($lines[$i]=~/^$contentsep/) {
   82: 		    if ($name) {
   83:                         chomp($value);
   84:                         $ENV{"form.$name"}=$value;
   85: 			if ($fname) {
   86: 			    $ENV{"form.$name.filename"}=$fname;
   87:                             $ENV{"form.$name.mimetype"}=$fmime;
   88:                         }
   89:                     }
   90:                     if ($i<$#lines) {
   91: 			$i++;
   92:                         $lines[$i]=~
   93: 		 /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
   94:                         $name=$1;
   95:                         $value='';
   96:                         if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
   97: 			   $fname=$1;
   98:                            if 
   99:                             ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
  100: 			      $fmime=$1;
  101:                               $i++;
  102: 			   } else {
  103:                               $fmime='';
  104:                            }
  105:                         } else {
  106: 			    $fname='';
  107:                             $fmime='';
  108:                         }
  109:                         $i++;
  110:                     }
  111:                 } else {
  112: 		    $value.=$lines[$i]."\n";
  113:                 }
  114:             }
  115: 	}
  116:             $r->method_number(M_GET);
  117: 	    $r->method('GET');
  118:             $r->headers_in->unset('Content-length');
  119: 
  120: # ---------------------------------------------------------------- Check access
  121: 
  122:             if ($requrl!~/^\/adm\//) {
  123: 		my $access=&Apache::lonnet::allowed('bre',$requrl);
  124:                 if ($access eq '1') {
  125: 		   $ENV{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
  126: 	           return HTTP_NOT_ACCEPTABLE; 
  127:                 }
  128:                 if (($access ne '2') && ($access ne 'F')) {
  129: 		   $ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
  130: 	           return HTTP_NOT_ACCEPTABLE; 
  131:                 }
  132:             } 
  133:             return OK; 
  134:         } else { 
  135:             $r->log_reason("Cookie $handle not valid", $r->filename) 
  136:         };
  137:     }
  138: 
  139: # ----------------------------------------------- Store where they wanted to go
  140: 
  141:     $ENV{'request.firsturl'}=$requrl;
  142:     return FORBIDDEN;
  143: }
  144: 
  145: 1;
  146: __END__