version 1.19, 2001/08/11 21:05:42
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version 1.96, 2006/09/05 17:33:06
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Line 1
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# The LearningOnline Network |
# The LearningOnline Network |
# Cookie Based Access Handler |
# Cookie Based Access Handler |
# 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11, |
# |
# 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30,11/6, |
# $Id$ |
# 12/25,12/26, |
# |
# 01/06/01,05/28,8/11 Gerd Kortemeyer |
# 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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### |
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package Apache::lonacc; |
package Apache::lonacc; |
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Line 11 use strict;
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Line 33 use strict;
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use Apache::Constants qw(:common :http :methods); |
use Apache::Constants qw(:common :http :methods); |
use Apache::File; |
use Apache::File; |
use Apache::lonnet; |
use Apache::lonnet; |
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use Apache::loncommon(); |
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use Apache::lonlocal; |
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use Apache::restrictedaccess(); |
use CGI::Cookie(); |
use CGI::Cookie(); |
use Fcntl qw(:flock); |
use Fcntl qw(:flock); |
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use LONCAPA; |
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sub cleanup { |
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my ($r)=@_; |
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if (! $r->is_initial_req()) { return DECLINED; } |
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&Apache::lonnet::save_cache(); |
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&Apache::lontexconvert::jsMath_reset(); |
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return OK; |
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} |
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sub goodbye { |
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my ($r)=@_; |
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&Apache::lonnet::goodbye(); |
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return DONE; |
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} |
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############################################### |
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sub get_posted_cgi { |
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my ($r) = @_; |
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my $buffer; |
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if ($r->header_in('Content-length')) { |
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$r->read($buffer,$r->header_in('Content-length'),0); |
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} |
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unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) { |
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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($1))/eg; |
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&Apache::loncommon::add_to_env("form.$name",$value); |
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} |
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} else { |
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my $contentsep=$1; |
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my @lines = split (/\n/,$buffer); |
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my $name=''; |
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my $value=''; |
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my $fname=''; |
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my $fmime=''; |
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my $i; |
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for ($i=0;$i<=$#lines;$i++) { |
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if ($lines[$i]=~/^$contentsep/) { |
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if ($name) { |
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chomp($value); |
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if ($fname) { |
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$env{"form.$name.filename"}=$fname; |
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$env{"form.$name.mimetype"}=$fmime; |
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} else { |
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$value=~s/\s+$//s; |
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} |
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&Apache::loncommon::add_to_env("form.$name",$value); |
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} |
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if ($i<$#lines) { |
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$i++; |
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$lines[$i]=~ |
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/Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i; |
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$name=$1; |
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$value=''; |
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if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) { |
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$fname=$1; |
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if |
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($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) { |
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$fmime=$1; |
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$i++; |
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} else { |
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$fmime=''; |
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} |
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} else { |
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$fname=''; |
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$fmime=''; |
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} |
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$i++; |
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} |
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} else { |
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$value.=$lines[$i]."\n"; |
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} |
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} |
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} |
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# |
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# Digested POSTed values |
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# |
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# Remember the way this was originally done (GET or POST) |
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# |
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$env{'request.method'}=$ENV{'REQUEST_METHOD'}; |
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# |
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# There may also be stuff in the query string |
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# Tell subsequent handlers that this was GET, not POST, so they can access query string. |
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# Also, unset POSTed content length to cover all tracks. |
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# |
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$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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} |
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# handle the case of the single sign on user, at this point $r->user |
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# will be set and valid now need to find the loncapa user info and possibly |
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# balance them |
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# returns OK if it was a SSO and user was handled |
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# undef if not SSO or no means to hanle the user |
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sub sso_login { |
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my ($r,$lonid,$handle) = @_; |
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my $lonidsdir=$r->dir_config('lonIDsDir'); |
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if (!($r->user |
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&& (!defined($env{'user.name'}) && !defined($env{'user.domain'})) |
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&& (!$lonid || !-e "$lonidsdir/$handle.id" || $handle eq ''))) { |
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# not an SSO case or already logged in |
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return undef; |
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} |
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my $domain = $r->dir_config('lonDefDomain'); |
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my $home=&Apache::lonnet::homeserver($r->user,$domain); |
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if ($home !~ /(con_lost|no_host|no_such_host)/) { |
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if ($r->dir_config("lonBalancer") eq 'yes') { |
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# login but immeaditly go to switch server to find us a new |
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# machine |
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&Apache::lonauth::success($r,$r->user,$domain,$home,'noredirect'); |
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$r->internal_redirect('/adm/switchserver'); |
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} else { |
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# need to login them in, so generate the need data that |
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# migrate expects to do login |
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my %info=('ip' => $r->connection->remote_ip(), |
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'domain' => $domain, |
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'username' => $r->user, |
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'server' => $r->dir_config('lonHostID'), |
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'sso.login' => 1 |
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); |
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my $token = |
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&Apache::lonnet::tmpput(\%info, |
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$r->dir_config('lonHostID')); |
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$env{'form.token'} = $token; |
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$r->internal_redirect('/adm/migrateuser'); |
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} |
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return OK; |
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} elsif (defined($r->dir_config('lonSSOUserUnkownRedirect'))) { |
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$r->internal_redirect($r->dir_config('lonSSOUserUnkownRedirect')); |
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return OK; |
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} |
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return undef; |
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} |
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sub handler { |
sub handler { |
my $r = shift; |
my $r = shift; |
Line 20 sub handler {
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Line 191 sub handler {
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my %cookies=CGI::Cookie->parse($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; |
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my $lonidsdir=$r->dir_config('lonIDsDir'); |
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my $handle; |
if ($lonid) { |
if ($lonid) { |
my $handle=$lonid->value; |
$handle=$lonid->value; |
$handle=~s/\W//g; |
$handle=~s/\W//g; |
my $lonidsdir=$r->dir_config('lonIDsDir'); |
} |
if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) { |
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# ------------------------------------------- Transfer profile into environment |
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my @profile; |
if (my $result = &sso_login($r,$lonid,$handle)) { |
{ |
return $result |
my $idf=Apache::File->new("$lonidsdir/$handle.id"); |
} |
flock($idf,LOCK_SH); |
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@profile=<$idf>; |
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$idf->close(); |
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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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if ($requrl=~/^\/res\//) { |
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$ENV{'request.state'} = "published"; |
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} else { |
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$ENV{'request.state'} = 'unknown'; |
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} |
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$ENV{'request.filename'} = $r->filename; |
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# --------------------- Figure out referer, first from HTTP_REFERER, then cache |
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my $referer=''; |
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if ($referer=$r->header_in('Referer')) { |
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$ENV{'HTTP_REFERER'}=$referer; |
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} else { |
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$ENV{'HTTP_REFERER'}=$ENV{'httpref.'.$requrl}; |
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} |
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# ------------------------------------------- Still no referer? Check wildcards |
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unless ($ENV{'HTTP_REFERER'}) { |
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map { |
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if ($_=~/^httpref\..*\*/) { |
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my $pattern=$_; |
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$pattern=~s/\*/\[\^\/\]\+/g; |
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$pattern=~s/\//\\\//g; |
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if ($requrl=~/$pattern/) { |
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$ENV{'HTTP_REFERER'}=$ENV{$_}; |
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} |
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} |
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} keys %ENV; |
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} |
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# -------------------------------------------------------- Load POST parameters |
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if ($r->dir_config("lonBalancer") eq 'yes') { |
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$r->set_handlers('PerlResponseHandler'=> |
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[\&Apache::switchserver::handler]); |
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} |
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if ($handle eq '') { |
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$r->log_reason("Cookie $handle not valid", $r->filename); |
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} elsif ((-e "$lonidsdir/$handle.id") && ($handle ne '')) { |
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# ------------------------------------------------------ Initialize Environment |
my $buffer; |
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$r->read($buffer,$r->header_in('Content-length')); |
&Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); |
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unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) { |
# --------------------------------------------------------- Initialize Language |
my @pairs=split(/&/,$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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} else { |
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my $contentsep=$1; |
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my @lines = split (/\n/,$buffer); |
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my $name=''; |
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my $value=''; |
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my $fname=''; |
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my $fmime=''; |
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my $i; |
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for ($i=0;$i<=$#lines;$i++) { |
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if ($lines[$i]=~/^$contentsep/) { |
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if ($name) { |
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chomp($value); |
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if ($fname) { |
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$ENV{"form.$name.filename"}=$fname; |
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$ENV{"form.$name.mimetype"}=$fmime; |
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} else { |
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$value=~s/\s+$//s; |
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} |
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$ENV{"form.$name"}=$value; |
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} |
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if ($i<$#lines) { |
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$i++; |
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$lines[$i]=~ |
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/Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i; |
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$name=$1; |
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$value=''; |
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if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) { |
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$fname=$1; |
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if |
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($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) { |
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$fmime=$1; |
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$i++; |
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} else { |
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$fmime=''; |
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} |
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} else { |
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$fname=''; |
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$fmime=''; |
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} |
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$i++; |
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} |
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} else { |
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$value.=$lines[$i]."\n"; |
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} |
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} |
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} |
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$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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# ---------------------------------------------------------------- Check access |
&Apache::lonlocal::get_language_handle($r); |
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if ($requrl!~/^\/adm\//) { |
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my $access=&Apache::lonnet::allowed('bre',$requrl); |
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if ($access eq '1') { |
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$ENV{'user.error.msg'}="$requrl:bre:0:0:Choose Course"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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if (($access ne '2') && ($access ne 'F')) { |
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$ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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} |
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return OK; |
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} else { |
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$r->log_reason("Cookie $handle not valid", $r->filename) |
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}; |
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} |
} |
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# ----------------------------------------------- Store where they wanted to go |
# -------------------------------------------------- Should be a valid user now |
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if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') { |
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# -------------------------------------------------------------- Resource State |
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if ($requrl=~/^\/+(res|uploaded)\//) { |
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$env{'request.state'} = "published"; |
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} else { |
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$env{'request.state'} = 'unknown'; |
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} |
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$env{'request.filename'} = $r->filename; |
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$env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl); |
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# -------------------------------------------------------- Load POST parameters |
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&Apache::lonacc::get_posted_cgi($r); |
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# ---------------------------------------------------------------- Check access |
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my $now = time; |
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if ($requrl !~ m{^/(?:adm|public|prtspool)/} |
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|| $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) { |
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my $access=&Apache::lonnet::allowed('bre',$requrl); |
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if ($access eq '1') { |
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$env{'user.error.msg'}="$requrl:bre:0:0:Choose Course"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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if ($access eq 'A') { |
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&Apache::restrictedaccess::setup_handler($r); |
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return OK; |
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} |
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if (($access ne '2') && ($access ne 'F')) { |
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$env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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} |
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if ($requrl =~ m|^/prtspool/|) { |
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my $start='/prtspool/'.$env{'user.name'}.'_'. |
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$env{'user.domain'}; |
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if ($requrl !~ /^\Q$start\E/) { |
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$env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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} |
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if ($env{'user.name'} eq 'public' && |
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$env{'user.domain'} eq 'public' && |
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$requrl !~ m{^/+(res|public|uploaded)/} && |
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$requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x && |
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$requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) { |
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$env{'request.querystring'}=$r->args; |
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$env{'request.firsturl'}=$requrl; |
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return FORBIDDEN; |
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} |
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# ------------------------------------------------------------- This is allowed |
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if ($env{'request.course.id'}) { |
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&Apache::lonnet::countacc($requrl); |
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$requrl=~/\.(\w+)$/; |
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if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || |
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($requrl=~/^\/adm\/.*\/(aboutme|navmaps|smppg|bulletinboard)(\?|$ )/x) || |
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($requrl=~/^\/adm\/wrapper\//) || |
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($requrl=~m|^/adm/coursedocs/showdoc/|) || |
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($requrl=~m|\.problem/smpedit$|) || |
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($requrl=~/^\/public\/.*\/syllabus$/)) { |
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# ------------------------------------- This is serious stuff, get symb and log |
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my $query=$r->args; |
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my $symb; |
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if ($query) { |
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&Apache::loncommon::get_unprocessed_cgi($query,['symb']); |
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} |
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if ($env{'form.symb'}) { |
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$symb=&Apache::lonnet::symbclean($env{'form.symb'}); |
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if ($requrl =~ m|^/adm/wrapper/| |
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|| $requrl =~ m|^/adm/coursedocs/showdoc/|) { |
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my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); |
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&Apache::lonnet::symblist($map,$murl => [$murl,$mid], |
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'last_known' =>[$murl,$mid]); |
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} elsif ((&Apache::lonnet::symbverify($symb,$requrl)) || |
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(($requrl=~m|(.*)/smpedit$|) && |
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&Apache::lonnet::symbverify($symb,$1))) { |
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my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); |
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&Apache::lonnet::symblist($map,$murl => [$murl,$mid], |
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'last_known' =>[$murl,$mid]); |
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} else { |
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$r->log_reason('Invalid symb for '.$requrl.': '. |
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$symb); |
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$env{'user.error.msg'}= |
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"$requrl:bre:1:1:Invalid Access"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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} else { |
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$symb=&Apache::lonnet::symbread($requrl); |
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if (&Apache::lonnet::is_on_map($requrl) && $symb && |
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!&Apache::lonnet::symbverify($symb,$requrl)) { |
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$r->log_reason('Invalid symb for '.$requrl.': '.$symb); |
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$env{'user.error.msg'}= |
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"$requrl:bre:1:1:Invalid Access"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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if ($symb) { |
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my ($map,$mid,$murl)= |
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&Apache::lonnet::decode_symb($symb); |
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&Apache::lonnet::symblist($map,$murl =>[$murl,$mid], |
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'last_known' =>[$murl,$mid]); |
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} |
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} |
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$env{'request.symb'}=$symb; |
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&Apache::lonnet::courseacclog($symb); |
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} else { |
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# ------------------------------------------------------- This is other content |
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&Apache::lonnet::courseacclog($requrl); |
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} |
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} |
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return OK; |
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} |
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# -------------------------------------------- See if this is a public resource |
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if ($requrl=~m|^/+adm/+help/+|) { |
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return OK; |
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} |
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# ------------------------------------ See if this is a viewable portfolio file |
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if (&Apache::lonnet::is_portfolio_url($requrl)) { |
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my $access=&Apache::lonnet::allowed('bre',$requrl); |
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if ($access eq 'A') { |
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&Apache::restrictedaccess::setup_handler($r); |
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return OK; |
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} |
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if (($access ne '2') && ($access ne 'F')) { |
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$env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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} |
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$ENV{'request.firsturl'}=$requrl; |
# -------------------------------------------------------------- Not authorized |
return FORBIDDEN; |
$requrl=~/\.(\w+)$/; |
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# if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || |
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# ($requrl=~/^\/adm\/(roles|logout|email|menu|remote)/) || |
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# ($requrl=~m|^/prtspool/|)) { |
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# -------------------------- Store where they wanted to go and get login screen |
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$env{'request.querystring'}=$r->args; |
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$env{'request.firsturl'}=$requrl; |
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return FORBIDDEN; |
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# } else { |
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# --------------------------------------------------------------------- Goodbye |
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# return HTTP_BAD_REQUEST; |
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# } |
} |
} |
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1; |
1; |
__END__ |
__END__ |
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=head1 NAME |
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Apache::lonacc - Cookie Based Access Handler |
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|
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=head1 SYNOPSIS |
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|
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Invoked (for various locations) by /etc/httpd/conf/srm.conf: |
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|
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PerlAccessHandler Apache::lonacc |
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|
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=head1 INTRODUCTION |
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|
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This module enables cookie based authentication and is used |
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to control access for many different LON-CAPA URIs. |
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|
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Whenever the client sends the cookie back to the server, |
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this cookie is handled by either lonacc.pm or loncacc.pm |
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(see srm.conf for what is invoked when). If |
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the cookie is missing or invalid, the user is re-challenged |
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for login information. |
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|
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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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|
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=head1 HANDLER SUBROUTINE |
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|
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This routine is called by Apache and mod_perl. |
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|
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=over 4 |
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|
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=item * |
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|
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transfer profile into environment |
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|
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=item * |
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|
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load POST parameters |
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=item * |
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check access |
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=item * |
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if allowed, get symb, log, generate course statistics if applicable |
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=item * |
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otherwise return error |
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=item * |
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see if public resource |
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=item * |
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store attempted access |
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=back |
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=cut |