# The LearningOnline Network
# Cookie Based Access Handler
# 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11,
# 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30,11/6,
# 12/25,12/26,
# 01/06/01,05/28,8/11,9/26 Gerd Kortemeyer
package Apache::lonacc;
use strict;
use Apache::Constants qw(:common :http :methods);
use Apache::File;
use Apache::lonnet;
use CGI::Cookie();
use Fcntl qw(:flock);
sub handler {
my $r = shift;
my $requrl=$r->uri;
my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
my $lonid=$cookies{'lonID'};
my $cookie;
if ($lonid) {
my $handle=$lonid->value;
$handle=~s/\W//g;
my $lonidsdir=$r->dir_config('lonIDsDir');
if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
# ------------------------------------------- Transfer profile into environment
my @profile;
{
my $idf=Apache::File->new("$lonidsdir/$handle.id");
flock($idf,LOCK_SH);
@profile=<$idf>;
$idf->close();
}
my $envi;
for ($envi=0;$envi<=$#profile;$envi++) {
chomp($profile[$envi]);
my ($envname,$envvalue)=split(/=/,$profile[$envi]);
$ENV{$envname} = $envvalue;
}
$ENV{'user.environment'} = "$lonidsdir/$handle.id";
if ($requrl=~/^\/res\//) {
$ENV{'request.state'} = "published";
} else {
$ENV{'request.state'} = 'unknown';
}
$ENV{'request.filename'} = $r->filename;
# -------------------------------------------------------- Load POST parameters
my $buffer;
$r->read($buffer,$r->header_in('Content-length'));
unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
my @pairs=split(/&/,$buffer);
my $pair;
foreach $pair (@pairs) {
my ($name,$value) = split(/=/,$pair);
$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
$name =~ tr/+/ /;
$name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
$ENV{"form.$name"}=$value;
}
} else {
my $contentsep=$1;
my @lines = split (/\n/,$buffer);
my $name='';
my $value='';
my $fname='';
my $fmime='';
my $i;
for ($i=0;$i<=$#lines;$i++) {
if ($lines[$i]=~/^$contentsep/) {
if ($name) {
chomp($value);
if ($fname) {
$ENV{"form.$name.filename"}=$fname;
$ENV{"form.$name.mimetype"}=$fmime;
} else {
$value=~s/\s+$//s;
}
$ENV{"form.$name"}=$value;
}
if ($i<$#lines) {
$i++;
$lines[$i]=~
/Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
$name=$1;
$value='';
if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
$fname=$1;
if
($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
$fmime=$1;
$i++;
} else {
$fmime='';
}
} else {
$fname='';
$fmime='';
}
$i++;
}
} else {
$value.=$lines[$i]."\n";
}
}
}
$r->method_number(M_GET);
$r->method('GET');
$r->headers_in->unset('Content-length');
# ---------------------------------------------------------------- Check access
if ($requrl!~/^\/adm\//) {
my $access=&Apache::lonnet::allowed('bre',$requrl);
if ($access eq '1') {
$ENV{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
return HTTP_NOT_ACCEPTABLE;
}
if (($access ne '2') && ($access ne 'F')) {
$ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
return HTTP_NOT_ACCEPTABLE;
}
}
return OK;
} else {
$r->log_reason("Cookie $handle not valid", $r->filename)
};
}
# -------------------------------------------- See if this is a public resource
if (&Apache::lonnet::metadata($requrl,'copyright') eq 'public') {
&Apache::lonnet::logthis('Granting public access: '.$requrl);
$ENV{'user.name'}='public';
$ENV{'user.domain'}='public';
$ENV{'request.state'} = "published";
$ENV{'request.publicaccess'} = 1;
$ENV{'request.filename'} = $r->filename;
return OK;
}
# ----------------------------------------------- Store where they wanted to go
$ENV{'request.firsturl'}=$requrl;
return FORBIDDEN;
}
1;
__END__
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