version 1.10, 2000/09/28 17:01:17
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version 1.42, 2006/11/23 01:49:41
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# The LearningOnline Network |
# The LearningOnline Network |
# Cookie Based Access Handler for Construction Area |
# Cookie Based Access Handler for Construction Area |
# (lonacc: 5/21/99,5/22,5/29,5/31 Gerd Kortemeyer) |
# (lonacc: 5/21/99,5/22,5/29,5/31 Gerd Kortemeyer) |
# 6/15,16/11,22/11, |
# |
# 01/06,01/11,6/1,9/25,9/28 Gerd Kortemeyer |
# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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package Apache::loncacc; |
package Apache::loncacc; |
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use strict; |
use strict; |
use Apache::Constants qw(:common :http :methods); |
use Apache::Constants qw(:common :http :methods REDIRECT); |
use Apache::File; |
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use CGI::Cookie(); |
use CGI::Cookie(); |
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use Fcntl qw(:flock); |
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use Apache::lonlocal; |
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use Apache::lonnet; |
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use Apache::lonacc; |
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sub constructaccess { |
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my ($url,$ownerdomain)=@_; |
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my ($ownername)=($url=~/\/(?:\~|priv\/|home\/)(\w+)\//); |
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unless (($ownername) && ($ownerdomain)) { return ''; } |
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# We do not allow editing of previous versions of files. |
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if ($url=~/\.(\d+)\.(\w+)$/) { return ''; } |
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my @possibledomains = &Apache::lonnet::current_machine_domains(); |
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if ($ownername eq $env{'user.name'}) { |
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foreach my $domain (@possibledomains) { |
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if ($domain eq $env{'user.domain'}) { |
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return ($ownername,$domain); |
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} |
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} |
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} |
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foreach my $domain (@possibledomains) { |
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if (exists($env{'user.priv.ca./'.$domain.'/'.$ownername.'./'}) || |
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exists($env{'user.priv.aa./'.$domain.'/'.$ownername.'./'}) ) { |
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return ($ownername,$domain); |
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} |
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} |
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return ''; |
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} |
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sub handler { |
sub handler { |
my $r = shift; |
my $r = shift; |
my $requrl=$r->uri; |
my $requrl=$r->uri; |
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$env{'request.editurl'}=$requrl; |
my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); |
my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); |
my $lonid=$cookies{'lonID'}; |
my $lonid=$cookies{'lonID'}; |
my $cookie; |
my $cookie; |
if ($lonid) { |
if ($lonid) { |
my $handle=$lonid->value; |
my $handle=&LONCAPA::clean_handle($lonid->value); |
$handle=~s/\W//g; |
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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 '')) { |
my $ownername=$requrl; |
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$ownername=~s/\/\~(\w+).*/\1/; |
# ------------------------------------------------------ Initialize Environment |
my $ownerdomain=$r->dir_config('lonDefDomain'); |
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my @handleparts=split(/\_/,$handle); |
&Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); |
my $username=$handleparts[0]; |
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my $domain=$handleparts[2]; |
# --------------------------------------------------------- Initialize Language |
if (($username ne $ownername) || ($domain ne $ownerdomain)) { |
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$r->log_reason |
&Apache::lonlocal::get_language_handle($r); |
("$username at $domain not authorized", $r->filename); |
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# -------------------------------------------------------------- Resource State |
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$env{'request.state'} = "construct"; |
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$env{'request.filename'} = $r->filename; |
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unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) { |
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$r->log_reason("Unauthorized $requrl", $r->filename); |
return HTTP_NOT_ACCEPTABLE; |
return HTTP_NOT_ACCEPTABLE; |
} |
} |
my @profile; |
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{ |
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my $idf=Apache::File->new("$lonidsdir/$handle.id"); |
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@profile=<$idf>; |
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} |
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my $envi; |
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for ($envi=0;$envi<=$#profile;$envi++) { |
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chomp($profile[$envi]); |
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my ($envname,$envvalue)=split(/=/,$profile[$envi]); |
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$ENV{$envname} = $envvalue; |
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} |
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$ENV{'user.environment'} = "$lonidsdir/$handle.id"; |
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$ENV{'request.state'} = "construct"; |
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$ENV{'request.filename'} = $r->filename; |
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# -------------------------------------------------------- Load POST parameters |
# -------------------------------------------------------- Load POST parameters |
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&Apache::lonacc::get_posted_cgi($r); |
my $buffer; |
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$r->read($buffer,$r->header_in('Content-length')); |
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my @pairs=split(/&/,$buffer); |
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my $pair; |
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foreach $pair (@pairs) { |
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my ($name,$value) = split(/=/,$pair); |
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$value =~ tr/+/ /; |
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$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
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$name =~ tr/+/ /; |
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$name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
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$ENV{"form.$name"}=$value; |
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} |
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$r->method_number(M_GET); |
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$r->method('GET'); |
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$r->headers_in->unset('Content-length'); |
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return OK; |
return OK; |
} else { |
} else { |
Line 77 sub handler {
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Line 103 sub handler {
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# ----------------------------------------------- Store where they wanted to go |
# ----------------------------------------------- Store where they wanted to go |
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$ENV{'request.firsturl'}=$requrl; |
$env{'request.firsturl'}=$requrl; |
return FORBIDDEN; |
return FORBIDDEN; |
} |
} |
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1; |
1; |
__END__ |
__END__ |
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=head1 NAME |
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Apache::lonacc - Cookie Based Access Handler for Construction Area |
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=head1 SYNOPSIS |
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Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf: |
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PerlAccessHandler Apache::loncacc |
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=head1 INTRODUCTION |
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This module enables cookie based authentication for construction area |
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and is used to control access for three (essentially equivalent) URIs. |
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<LocationMatch "^/priv.*"> |
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<LocationMatch "^/\~.*"> |
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<LocationMatch "^/\~.*/$"> |
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Whenever the client sends the cookie back to the server, |
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if the cookie is missing or invalid, the user is re-challenged |
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for login information. |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 HANDLER SUBROUTINE |
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This routine is called by Apache and mod_perl. |
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=over 4 |
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=item * |
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load POST parameters |
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=item * |
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store where they wanted to go (first url entered) |
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=back |
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=head1 OTHERSUBROUTINES |
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=over 4 |
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=item * |
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constructaccess($url,$ownerdomain) : See if the owner domain and name |
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in the URL match those in the expected environment. If so, return |
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two element list ($ownername,$ownerdomain). Else, return null string. |
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=back |
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=cut |
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