--- loncom/auth/lonacc.pm 2000/12/25 12:44:43 1.14 +++ loncom/auth/lonacc.pm 2001/12/15 20:40:23 1.25 @@ -1,8 +1,40 @@ # The LearningOnline Network # Cookie Based Access Handler +# +# $Id: lonacc.pm,v 1.25 2001/12/15 20:40:23 harris41 Exp $ +# +# 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 Gerd Kortemeyer +# 12/25,12/26, +# YEAR=2001 +# 01/06/01,05/28,8/11,9/26,11/29 Gerd Kortemeyer +# 12/15 Scott Harrison +# +### package Apache::lonacc; @@ -10,7 +42,9 @@ use strict; use Apache::Constants qw(:common :http :methods); use Apache::File; use Apache::lonnet; +use Apache::loncommon(); use CGI::Cookie(); +use Fcntl qw(:flock); sub handler { my $r = shift; @@ -29,7 +63,9 @@ sub handler { 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++) { @@ -38,17 +74,12 @@ sub handler { $ENV{$envname} = $envvalue; } $ENV{'user.environment'} = "$lonidsdir/$handle.id"; - $ENV{'request.state'} = "published"; - $ENV{'request.filename'} = $r->filename; - -# --------------------- Figure out referer, first from HTTP_REFERER, then cache - - my $referer=''; - if ($referer=$r->header_in('Referer')) { - $ENV{'HTTP_REFERER'}=$referer; + if ($requrl=~/^\/res\//) { + $ENV{'request.state'} = "published"; } else { - $ENV{'HTTP_REFERER'}=$ENV{'httpref.'.$requrl}; - } + $ENV{'request.state'} = 'unknown'; + } + $ENV{'request.filename'} = $r->filename; # -------------------------------------------------------- Load POST parameters @@ -81,11 +112,13 @@ sub handler { if ($lines[$i]=~/^$contentsep/) { if ($name) { chomp($value); - $ENV{"form.$name"}=$value; if ($fname) { $ENV{"form.$name.filename"}=$fname; $ENV{"form.$name.mimetype"}=$fmime; + } else { + $value=~s/\s+$//s; } + $ENV{"form.$name"}=$value; } if ($i<$#lines) { $i++; @@ -129,18 +162,104 @@ sub handler { $ENV{'user.error.msg'}="$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 $symb=&Apache::lonnet::symbread; + $ENV{'request.symb'}=$symb; + &Apache::lonnet::courseacclog($symb); + } else { +# ------------------------------------------------------- This is other content + &Apache::lonnet::courseacclog($requrl); + } + } 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__ + +=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