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# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Zach Lipton <zach@zachlipton.com>
#
package Bugzilla::Hook;
use Bugzilla::Constants;
use Bugzilla::Util;
use Bugzilla::Error;
use strict;
sub process {
my $name = shift;
trick_taint($name);
# get a list of all extensions
my @extensions = glob(bz_locations()->{'extensionsdir'} . "/*");
# check each extension to see if it uses the hook
# if so, invoke the extension source file:
foreach my $extension (@extensions) {
# all of these variables come directly from code or directory names.
# If there's malicious data here, we have much bigger issues to
# worry about, so we can safely detaint them:
trick_taint($extension);
if (-e $extension.'/code/'.$name.'.pl') {
do($extension.'/code/'.$name.'.pl');
ThrowCodeError('extension_invalid', {
name => $name, extension => $extension }) if $@;
}
}
}
1;
__END__
=head1 NAME
Bugzilla::Hook - Extendible extension hooks for Bugzilla code
=head1 SYNOPSIS
use Bugzilla::Hook;
Bugzilla::Hook::process("hookname");
=head1 DESCRIPTION
Bugzilla allows extension modules to drop in and add routines at
arbitrary points in Bugzilla code. These points are refered to as
hooks. When a piece of standard Bugzilla code wants to allow an extension
to perform additional functions, it uses Bugzilla::Hook's process()
subroutine to invoke any extension code if installed.
=over 4
=item C<process>
Invoke any code hooks with a matching name from any installed extensions.
When this subroutine is called with hook name foo, Bugzilla will attempt
to invoke any source files in C<bugzilla/extension/EXTENSION_NAME/code/foo.pl>.
See C<customization.xml> in the Bugzilla Guide for more information on
Bugzilla's extension mechanism.
=back
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