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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): Bradley Baetz <bbaetz@student.usyd.edu.au>
use strict;
package Bugzilla::CGI;
use CGI qw(-no_xhtml -oldstyle_urls :private_tempfiles :unique_headers);
use base qw(CGI);
use Bugzilla::Util;
use Bugzilla::Config;
# We need to disable output buffering - see bug 179174
$| = 1;
# CGI.pm uses AUTOLOAD, but explicitly defines a DESTROY sub.
# We need to do so, too, otherwise perl dies when the object is destroyed
# and we don't have a DESTROY method (because CGI.pm's AUTOLOAD will |die|
# on getting an unknown sub to try to call)
sub DESTROY {};
sub new {
my ($invocant, @args) = @_;
my $class = ref($invocant) || $invocant;
my $self = $class->SUPER::new(@args);
# Make sure that we don't send any charset headers
$self->charset('');
# Check for errors
# All of the Bugzilla code wants to do this, so do it here instead of
# in each script
my $err = $self->cgi_error;
if ($err) {
# XXX - under mod_perl we can use the request object to
# enable the apache ErrorDocument stuff, which is localisable
# (and localised by default under apache2).
# This doesn't appear to be possible under mod_cgi.
# Under mod_perl v2, though, this happens automatically, and the
# message body is ignored.
# Note that this error block is only triggered by CGI.pm for malformed
# multipart requests, and so should never happen unless there is a
# browser bug.
print $self->header(-status => $err);
# ThrowCodeError wants to print the header, so it grabs Bugzilla->cgi
# which creates a new Bugzilla::CGI object, which fails again, which
# ends up here, and calls ThrowCodeError, and then recurses forever.
# So don't use it.
# In fact, we can't use templates at all, because we need a CGI object
# to determine the template lang as well as the current url (from the
# template)
# Since this is an internal error which indicates a severe browser bug,
# just die.
die "CGI parsing error: $err";
}
return $self;
}
# We want this sorted plus the ability to exclude certain params
sub canonicalise_query {
my ($self, @exclude) = @_;
# Reconstruct the URL by concatenating the sorted param=value pairs
my @parameters;
foreach my $key (sort($self->param())) {
# Leave this key out if it's in the exclude list
next if lsearch(\@exclude, $key) != -1;
my $esc_key = url_quote($key);
foreach my $value ($self->param($key)) {
if ($value) {
my $esc_value = url_quote($value);
push(@parameters, "$esc_key=$esc_value");
}
}
}
return join("&", @parameters);
}
# CGI.pm makes this nph, but apache doesn't like that
sub multipart_init {
my $self = shift;
unshift(@_, '-nph' => undef);
return $self->SUPER::multipart_init(@_);
}
# The various parts of Bugzilla which create cookies don't want to have to
# pass them arround to all of the callers. Instead, store them locally here,
# and then output as required from |headers|.
# This is done instead of just printing the result from the script, because
# we need to use |$r->header_out| under mod_perl (which is what CGI.pm
# does, and we need to match, plus if we don't |print| anything, we can turn
# off mod_perl/Apache's header parsing for a small perf gain)
sub send_cookie {
my $self = shift;
# Add the default path in
unshift(@_, '-path' => Param('cookiepath'));
# Use CGI::Cookie directly, because CGI.pm's |cookie| method gives the
# current value if there isn't a -value attribute, which happens when
# we're expiring an entry.
require CGI::Cookie;
my $cookie = CGI::Cookie->new(@_);
# XXX - mod_perl
print "Set-Cookie: $cookie\r\n";
return;
}
1;
__END__
=head1 NAME
Bugzilla::CGI - CGI handling for Bugzilla
=head1 SYNOPSIS
use Bugzilla::CGI;
my $cgi = new Bugzilla::CGI();
=head1 DESCRIPTION
This package inherits from the standard CGI module, to provide additional
Bugzilla-specific functionality. In general, see L<the CGI.pm docs|CGI> for
documention.
=head1 CHANGES FROM L<CGI.PM|CGI>
Bugzilla::CGI has some differences from L<CGI.pm|CGI>.
=over 4
=item C<cgi_error> is automatically checked
After creating the CGI object, C<Bugzilla::CGI> automatically checks
I<cgi_error>, and throws a CodeError if a problem is detected.
=back
=head1 ADDITIONAL FUNCTIONS
I<Bugzilla::CGI> also includes additional functions.
=over 4
=item C<canonicalise_query(@exclude)>
This returns a sorted string of the parameters, suitable for use in a url.
Values in C<@exclude> are not included in the result.
=item C<send_cookie>
This routine is identical to CGI.pm's C<cookie> routine, except that the cookie
is sent to the browser, rather than returned. This should be used by all
Bugzilla code (instead of C<cookie> or the C<-cookie> argument to C<header>),
so that under mod_perl the headers can be sent correctly, using C<print> or
the mod_perl APIs as appropriate.
=back
=head1 SEE ALSO
L<CGI|CGI>, L<CGI::Cookie|CGI::Cookie>
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