version 1.3, 1999/11/22 17:23:13
|
version 1.37, 2002/11/06 22:43:27
|
Line 1
|
Line 1
|
# The LearningOnline Network |
# The LearningOnline Network |
# Cookie Based Access Handler |
# Cookie Based Access Handler |
# 5/21/99,5/22,5/29,5/31,6/15,16/11 Gerd Kortemeyer |
# |
|
# $Id$ |
|
# |
|
# Copyright Michigan State University Board of Trustees |
|
# |
|
# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
|
# |
|
# LON-CAPA is free software; you can redistribute it and/or modify |
|
# it under the terms of the GNU General Public License as published by |
|
# the Free Software Foundation; either version 2 of the License, or |
|
# (at your option) any later version. |
|
# |
|
# LON-CAPA is distributed in the hope that it will be useful, |
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
# GNU General Public License for more details. |
|
# |
|
# You should have received a copy of the GNU General Public License |
|
# along with LON-CAPA; if not, write to the Free Software |
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
|
# |
|
# /home/httpd/html/adm/gpl.txt |
|
# |
|
# http://www.lon-capa.org/ |
|
# |
|
# YEAR=1999 |
|
# 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11, |
|
# YEAR=2000 |
|
# 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30,11/6, |
|
# 12/25,12/26, |
|
# YEAR=2001 |
|
# 01/06/01,05/28,8/11,9/26,11/29 Gerd Kortemeyer |
|
# 12/15 Scott Harrison |
|
# YEAR=2002 |
|
# 1/4,2/25 Gerd Kortemeyer |
|
# |
|
### |
|
|
package Apache::lonacc; |
package Apache::lonacc; |
|
|
use strict; |
use strict; |
use Apache::Constants qw(:common); |
use Apache::Constants qw(:common :http :methods); |
use Apache::File; |
use Apache::File; |
|
use Apache::lonnet; |
|
use Apache::loncommon(); |
use CGI::Cookie(); |
use CGI::Cookie(); |
|
use Fcntl qw(:flock); |
|
|
sub handler { |
sub handler { |
my $r = shift; |
my $r = shift; |
Line 20 sub handler {
|
Line 59 sub handler {
|
$handle=~s/\W//g; |
$handle=~s/\W//g; |
my $lonidsdir=$r->dir_config('lonIDsDir'); |
my $lonidsdir=$r->dir_config('lonIDsDir'); |
if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) { |
if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) { |
|
|
|
# ------------------------------------------- Transfer profile into environment |
|
|
my @profile; |
my @profile; |
{ |
{ |
my $idf=Apache::File->new("$lonidsdir/$handle.id"); |
my $idf=Apache::File->new("$lonidsdir/$handle.id"); |
|
flock($idf,LOCK_SH); |
@profile=<$idf>; |
@profile=<$idf>; |
|
$idf->close(); |
} |
} |
my $envi; |
my $envi; |
for ($envi=0;$envi<=$#profile;$envi++) { |
for ($envi=0;$envi<=$#profile;$envi++) { |
chomp($profile[$envi]); |
chomp($profile[$envi]); |
my ($envname,$envvalue)=split(/=/,$profile[$envi]); |
my ($envname,$envvalue)=split(/=/,$profile[$envi]); |
$r->subprocess_env("profile.$envname" => "$envvalue"); |
$ENV{$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($1))/eg; |
|
&Apache::loncommon::add_to_env("form.$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; |
|
} |
|
&Apache::loncommon::add_to_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"; |
|
} |
} |
} |
$r->subprocess_env("user.environment" => "$lonidsdir/$handle.id"); |
} |
$r->subprocess_env("request.state" => "published"); |
$ENV{'request.method'}=$ENV{'REQUEST_METHOD'}; |
|
$r->method_number(M_GET); |
|
$r->method('GET'); |
|
$r->headers_in->unset('Content-length'); |
|
|
|
# ---------------------------------------------------------------- Check access |
|
|
|
if ($requrl!~/^\/adm|public|prtspool\//) { |
|
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; |
|
} |
|
} |
|
if ($requrl =~ m|^/prtspool/|) { |
|
my $start='/prtspool/'.$ENV{'user.name'}.'_'. |
|
$ENV{'user.domain'}; |
|
if ($requrl !~ /^\Q$start\E/) { |
|
$ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
|
return HTTP_NOT_ACCEPTABLE; |
|
} |
|
} |
|
# ------------------------------------------------------------- This is allowed |
|
if ($ENV{'request.course.id'}) { |
|
&Apache::lonnet::countacc($requrl); |
|
$requrl=~/\.(\w+)$/; |
|
if (&Apache::loncommon::fileembstyle($1) eq 'ssi') { |
|
# ------------------------------------- This is serious stuff, get symb and log |
|
my $query=$r->args; |
|
my $symb; |
|
if ($query) { |
|
&Apache::loncommon::get_unprocessed_cgi($query,['symb']); |
|
} |
|
if ($ENV{'form.symb'}) { |
|
$symb=&Apache::lonnet::symbclean($ENV{'form.symb'}); |
|
if (&Apache::lonnet::symbverify($symb,$requrl)) { |
|
my ($map,$mid,$murl)=split(/\_\_\_/,$symb); |
|
&Apache::lonnet::symblist($map,$murl => $mid, |
|
'last_known' => $murl); |
|
} else { |
|
$r->log_reason('Invalid symb for '.$requrl.': '. |
|
$symb); |
|
$ENV{'user.error.msg'}= |
|
"$requrl:bre:1:1:Invalid Access"; |
|
return HTTP_NOT_ACCEPTABLE; |
|
} |
|
} else { |
|
$symb=&Apache::lonnet::symbread; |
|
} |
|
$ENV{'request.symb'}=$symb; |
|
&Apache::lonnet::courseacclog($symb); |
|
} else { |
|
# ------------------------------------------------------- This is other content |
|
&Apache::lonnet::courseacclog($requrl); |
|
} |
|
} |
return OK; |
return OK; |
} else { |
} else { |
$r->log_reason("Cookie $handle not valid", $r->filename) |
$r->log_reason("Cookie $handle not valid", $r->filename) |
}; |
}; |
} |
} |
$cookie=CGI::Cookie->new(-name => 'lonURL', |
|
-value => $requrl, |
# -------------------------------------------- See if this is a public resource |
-path => '/'); |
if ($requrl=~m|^/public/| |
$r->err_headers_out->add('Set-Cookie' => $cookie); |
|| (&Apache::lonnet::metadata($requrl,'copyright') eq 'public')) { |
return FORBIDDEN; |
&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; |
|
} |
|
# -------------------------------------------------------------- Not authorized |
|
$requrl=~/\.(\w+)$/; |
|
if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || |
|
($requrl=~/^\/adm\/(roles|logout)/) || |
|
($requrl=~m|^/prtspool/|)) { |
|
# -------------------------- Store where they wanted to go and get login screen |
|
$ENV{'request.firsturl'}=$requrl; |
|
return FORBIDDEN; |
|
} else { |
|
# --------------------------------------------------------------------- Goodbye |
|
return HTTP_BAD_REQUEST; |
|
} |
} |
} |
|
|
1; |
1; |
__END__ |
__END__ |
|
|
|
=head1 NAME |
|
|
|
Apache::lonacc - Cookie Based Access Handler |
|
|
|
=head1 SYNOPSIS |
|
|
|
Invoked (for various locations) by /etc/httpd/conf/srm.conf: |
|
|
|
PerlAccessHandler Apache::lonacc |
|
|
|
=head1 INTRODUCTION |
|
|
|
This module enables cookie based authentication and is used |
|
to control access for many different LON-CAPA URIs. |
|
|
|
Whenever the client sends the cookie back to the server, |
|
this cookie is handled by either lonacc.pm or loncacc.pm |
|
(see srm.conf for what is invoked when). If |
|
the cookie is missing or invalid, the user is re-challenged |
|
for login information. |
|
|
|
This is part of the LearningOnline Network with CAPA project |
|
described at http://www.lon-capa.org. |
|
|
|
=head1 HANDLER SUBROUTINE |
|
|
|
This routine is called by Apache and mod_perl. |
|
|
|
=over 4 |
|
|
|
=item * |
|
|
|
transfer profile into environment |
|
|
|
=item * |
|
|
|
load POST parameters |
|
|
|
=item * |
|
|
|
check access |
|
|
|
=item * |
|
|
|
if allowed, get symb, log, generate course statistics if applicable |
|
|
|
=item * |
|
|
|
otherwise return error |
|
|
|
=item * |
|
|
|
see if public resource |
|
|
|
=item * |
|
|
|
store attempted access |
|
|
|
=back |
|
|
|
=cut |