version 1.41, 2006/04/13 19:07:33
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version 1.60, 2012/10/29 17:39:06
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Line 27
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Line 27
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# http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
# |
# |
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package Apache::loncacc; |
=pod |
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use strict; |
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use Apache::Constants qw(:common :http :methods REDIRECT); |
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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 { |
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my $r = shift; |
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my $requrl=$r->uri; |
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$env{'request.editurl'}=$requrl; |
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my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); |
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my $lonid=$cookies{'lonID'}; |
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my $cookie; |
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if ($lonid) { |
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my $handle=$lonid->value; |
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$handle=~s/\W//g; |
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my $lonidsdir=$r->dir_config('lonIDsDir'); |
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if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) { |
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# ------------------------------------------------------ Initialize Environment |
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&Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); |
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# --------------------------------------------------------- Initialize Language |
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&Apache::lonlocal::get_language_handle($r); |
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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", $r->filename); |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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# -------------------------------------------------------- Load POST parameters |
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&Apache::lonacc::get_posted_cgi($r); |
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return OK; |
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} else { |
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$r->log_reason("Cookie $handle not valid", $r->filename) |
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}; |
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} |
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# ----------------------------------------------- Store where they wanted to go |
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$env{'request.firsturl'}=$requrl; |
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return FORBIDDEN; |
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} |
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1; |
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__END__ |
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=head1 NAME |
=head1 NAME |
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Line 124 Invoked (for various locations) by /etc/
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Line 42 Invoked (for various locations) by /etc/
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=head1 INTRODUCTION |
=head1 INTRODUCTION |
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This module enables cookie based authentication for construction area |
This module enables cookie based authentication for construction area |
and is used to control access for three (essentially equivalent) URIs. |
and is used to control access for the following two types of URI |
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(one for files, and one for directories): |
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<LocationMatch "^/priv.*"> |
<LocationMatch "^/priv.*"> |
<LocationMatch "^/\~.*"> |
<LocationMatch "^/priv.*/$"> |
<LocationMatch "^/\~.*/$"> |
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Whenever the client sends the cookie back to the server, |
Whenever the client sends the cookie back to the server, |
if the cookie is missing or invalid, the user is re-challenged |
if the cookie is missing or invalid, the user is re-challenged |
Line 153 store where they wanted to go (first url
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Line 71 store where they wanted to go (first url
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=back |
=back |
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=head1 OTHERSUBROUTINES |
=cut |
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=over 4 |
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=item * |
package Apache::loncacc; |
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constructaccess($url,$ownerdomain) : See if the owner domain and name |
use strict; |
in the URL match those in the expected environment. If so, return |
use Apache::Constants qw(:common :http :methods REDIRECT); |
two element list ($ownername,$ownerdomain). Else, return null string. |
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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use LONCAPA qw(:DEFAULT :match); |
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=back |
sub handler { |
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my $r = shift; |
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my $requrl=$r->uri; |
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$env{'request.editurl'}=$requrl; |
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=cut |
my $handle = &Apache::lonnet::check_for_valid_session($r); |
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if ($handle ne '') { |
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# ------------------------------------------------------ Initialize Environment |
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my $lonidsdir=$r->dir_config('lonIDsDir'); |
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&Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); |
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# --------------------------------------------------------- Initialize Language |
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&Apache::lonlocal::get_language_handle($r); |
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# -------------------------------------------------------------- Resource State |
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$env{'request.state'} = "construct"; |
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$env{'request.filename'} = $r->filename; |
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my $allowed; |
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my ($ownername,$ownerdom,$ownerhome) = |
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&Apache::lonnet::constructaccess($requrl,'setpriv'); |
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if (($ownername ne '') && ($ownerdom ne '') && ($ownerhome ne '')) { |
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unless ($ownerhome eq 'no_host') { |
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my @hosts = &Apache::lonnet::current_machine_ids(); |
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if (grep(/^\Q$ownerhome\E$/,@hosts)) { |
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$allowed = 1; |
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} |
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} |
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} |
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unless ($allowed) { |
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$r->log_reason("Unauthorized $requrl", $r->filename); |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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# -------------------------------------------------------- Load POST parameters |
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&Apache::lonacc::get_posted_cgi($r); |
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return OK; |
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} else { |
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$r->log_reason("Cookie $handle not valid", $r->filename) |
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} |
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# ----------------------------------------------- Store where they wanted to go |
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$env{'request.firsturl'}=$requrl; |
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return FORBIDDEN; |
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} |
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1; |
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__END__ |
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