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# please insert nothing before this line: -*- mode: cperl; cperl-indent-level: 4; cperl-continued-statement-offset: 4; indent-tabs-mode: nil -*-
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (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.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
package ModPerl::RegistryLoader;
use strict;
use warnings;
use ModPerl::RegistryCooker ();
use Apache2::ServerUtil ();
use Apache2::Log ();
use APR::Pool ();
use APR::Finfo ();
use APR::Const -compile=>qw(FINFO_NORM);
use Carp;
use File::Spec ();
use Apache2::Const -compile => qw(OK HTTP_OK OPT_EXECCGI);
our @ISA = ();
sub new {
my $class = shift;
my $self = bless {@_} => ref($class)||$class;
$self->{package} ||= 'ModPerl::Registry';
$self->{pool} = APR::Pool->new();
$self->load_package($self->{package});
return $self;
}
sub handler {
my ($self, $uri, $filename, $virthost) = @_;
# set the inheritance rules at run time
@ISA = $self->{package};
unless (defined $uri) {
$self->warn("uri is a required argument");
return;
}
if (defined $filename) {
unless (-e $filename) {
$self->warn("Cannot find: $filename");
return;
}
}
else {
# try to translate URI->filename
if (exists $self->{trans} and ref($self->{trans}) eq 'CODE') {
no strict 'refs';
$filename = $self->{trans}->($uri);
unless (-e $filename) {
$self->warn("Cannot find a translated from uri: $filename");
return;
}
}
else {
# try to guess
(my $guess = $uri) =~ s|^/||;
$self->warn("Trying to guess filename based on uri")
if $self->{debug};
$filename = File::Spec->catfile(Apache2::ServerUtil::server_root,
$guess);
unless (-e $filename) {
$self->warn("Cannot find guessed file: $filename",
"provide \$filename or 'trans' sub");
return;
}
}
}
if ($self->{debug}) {
$self->warn("*** uri=$uri, filename=$filename");
}
my $rl = bless {
uri => $uri,
filename => $filename,
package => $self->{package},
} => ref($self) || $self;
$rl->{virthost} = $virthost if defined $virthost;
# can't call SUPER::handler here, because it usually calls new()
# and then the ModPerlRegistryLoader::new() will get called,
# instead of the super class' new, so we implement the super
# class' handler here. Hopefully all other subclasses use the same
# handler.
__PACKAGE__->SUPER::new($rl)->default_handler();
}
# XXX: s/my_// for qw(my_finfo my_slurp_filename);
# when when finfo() and slurp_filename() are ported to 2.0 and
# RegistryCooker is starting to use them
sub get_server_name { return $_[0]->{virthost} if exists $_[0]->{virthost} }
sub filename { shift->{filename} }
sub status { Apache2::Const::HTTP_OK }
sub pool { shift->{pool}||=APR::Pool->new() }
sub finfo { $_[0]->{finfo}||=APR::Finfo::stat($_[0]->{filename},
APR::Const::FINFO_NORM,
$_[0]->pool); }
sub uri { shift->{uri} }
sub path_info {}
sub allow_options { Apache2::Const::OPT_EXECCGI } #will be checked again at run-time
sub log_error { shift; die @_ if $@; warn @_; }
sub run { return Apache2::Const::OK } # don't run the script
sub server { shift }
sub is_virtual { exists shift->{virthost} }
# the preloaded file needs to be precompiled into the package
# specified by the 'package' attribute, not RegistryLoader
sub namespace_root {
join '::', ModPerl::RegistryCooker::NAMESPACE_ROOT,
shift->{REQ}->{package};
}
# override Apache class methods called by Modperl::Registry*. normally
# only available at request-time via blessed request_rec pointer
sub slurp_filename {
my $r = shift;
my $tainted = @_ ? shift : 1;
my $filename = $r->filename;
open my $fh, $filename or die "can't open $filename: $!";
local $/;
my $code = <$fh>;
unless ($tainted) {
($code) = $code =~ /(.*)/s; # untaint
}
close $fh;
return \$code;
}
sub load_package {
my ($self, $package) = @_;
croak "package to load wasn't specified" unless defined $package;
$package =~ s|::|/|g;
$package .= ".pm";
require $package;
};
sub warn {
my $self = shift;
Apache2::Log->warn(__PACKAGE__ . ": @_\n");
}
1;
__END__
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