version 1.20, 2001/08/12 01:18:37
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version 1.35, 2002/08/27 14:23:18
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# The LearningOnline Network |
# The LearningOnline Network |
# Cookie Based Access Handler |
# Cookie Based Access Handler |
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# |
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# $Id$ |
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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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# YEAR=1999 |
# 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11, |
# 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11, |
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# YEAR=2000 |
# 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30,11/6, |
# 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30,11/6, |
# 12/25,12/26, |
# 12/25,12/26, |
# 01/06/01,05/28,8/11 Gerd Kortemeyer |
# YEAR=2001 |
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# 01/06/01,05/28,8/11,9/26,11/29 Gerd Kortemeyer |
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# 12/15 Scott Harrison |
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# YEAR=2002 |
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# 1/4,2/25 Gerd Kortemeyer |
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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 44 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(); |
use CGI::Cookie(); |
use CGI::Cookie(); |
use Fcntl qw(:flock); |
use Fcntl qw(:flock); |
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Line 66 sub handler {
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Line 100 sub handler {
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$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
$name =~ tr/+/ /; |
$name =~ tr/+/ /; |
$name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
$name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
$ENV{"form.$name"}=$value; |
&Apache::loncommon::add_to_env("form.$name",$value); |
} |
} |
} else { |
} else { |
my $contentsep=$1; |
my $contentsep=$1; |
Line 86 sub handler {
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Line 120 sub handler {
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} else { |
} else { |
$value=~s/\s+$//s; |
$value=~s/\s+$//s; |
} |
} |
$ENV{"form.$name"}=$value; |
&Apache::loncommon::add_to_env("form.$name",$value); |
} |
} |
if ($i<$#lines) { |
if ($i<$#lines) { |
$i++; |
$i++; |
Line 114 sub handler {
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Line 148 sub handler {
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} |
} |
} |
} |
} |
} |
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$ENV{'request.method'}=$ENV{'REQUEST_METHOD'}; |
$r->method_number(M_GET); |
$r->method_number(M_GET); |
$r->method('GET'); |
$r->method('GET'); |
$r->headers_in->unset('Content-length'); |
$r->headers_in->unset('Content-length'); |
Line 130 sub handler {
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Line 165 sub handler {
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$ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
$ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
return HTTP_NOT_ACCEPTABLE; |
return HTTP_NOT_ACCEPTABLE; |
} |
} |
} |
} |
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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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# ------------------------------------- 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 (&Apache::lonnet::symbverify($symb,$requrl)) { |
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my ($map,$mid,$murl)=split(/\_\_\_/,$symb); |
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&Apache::lonnet::symblist($map,$murl => $mid, |
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'last_known' => $murl); |
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} else { |
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$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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$symb=&Apache::lonnet::symbread; |
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} |
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$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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} |
return OK; |
return OK; |
} else { |
} else { |
$r->log_reason("Cookie $handle not valid", $r->filename) |
$r->log_reason("Cookie $handle not valid", $r->filename) |
}; |
}; |
} |
} |
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# ----------------------------------------------- Store where they wanted to go |
# -------------------------------------------- See if this is a public resource |
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if (($requrl=~/^\/public\//) || |
$ENV{'request.firsturl'}=$requrl; |
(&Apache::lonnet::metadata($requrl,'copyright') eq 'public')) { |
return FORBIDDEN; |
&Apache::lonnet::logthis('Granting public access: '.$requrl); |
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$ENV{'user.name'}='public'; |
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$ENV{'user.domain'}='public'; |
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$ENV{'request.state'} = "published"; |
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$ENV{'request.publicaccess'} = 1; |
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$ENV{'request.filename'} = $r->filename; |
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return OK; |
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} |
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# -------------------------------------------------------------- Not authorized |
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$requrl=~/\.(\w+)$/; |
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if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || |
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($requrl=~/^\/adm\/(roles|logout)/)) { |
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# -------------------------- Store where they wanted to go and get login screen |
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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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=head1 SYNOPSIS |
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Invoked (for various locations) by /etc/httpd/conf/srm.conf: |
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PerlAccessHandler Apache::lonacc |
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=head1 INTRODUCTION |
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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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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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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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transfer profile into environment |
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=item * |
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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 |