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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 TypeSniffer Bugzilla Extension.
#
# The Initial Developer of the Original Code is The Mozilla Foundation.
# Portions created by the Initial Developer are Copyright (C) 2010 the
# Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Gervase Markham <gerv@mozilla.org>
package Bugzilla::Extension::TypeSniffer;
use 5.10.1;
use strict;
use warnings;
use base qw(Bugzilla::Extension);
use File::MimeInfo::Magic;
use IO::Scalar;
our $VERSION = '1';
# These extensions override/supplement File::MimeInfo::Magic's detection.
our %EXTENSION_OVERRIDES = ('.lang' => 'text/plain',);
################################################################################
# This extension uses magic to guess MIME types for data where the browser has
# told us it's application/octet-stream (probably because there's no file
# extension, or it's a text type with a non-.txt file extension).
################################################################################
sub attachment_process_data {
my ($self, $args) = @_;
my $attributes = $args->{'attributes'};
my $params = Bugzilla->input_params;
# If we have autodetected application/octet-stream from the Content-Type
# header, let's have a better go using a sniffer.
if ( $params->{'contenttypemethod'}
&& $params->{'contenttypemethod'} eq 'autodetect'
&& $attributes->{'mimetype'} eq 'application/octet-stream')
{
my $filename = $attributes->{'filename'} . '';
# Check for an override first
if ($filename =~ /^.+(\..+$)/) {
my $ext = lc($1);
if (exists $EXTENSION_OVERRIDES{$ext}) {
$attributes->{'mimetype'} = $EXTENSION_OVERRIDES{$ext};
return;
}
}
# Then try file extension detection
my $mimetype = mimetype($filename);
if ($mimetype) {
$attributes->{'mimetype'} = $mimetype;
return;
}
# data attribute can be either scalar data or filehandle
# bugzilla.org/docs/3.6/en/html/api/Bugzilla/Attachment.html#create
my $fh = $attributes->{'data'};
if (!ref($fh)) {
my $data = $attributes->{'data'};
$fh = new IO::Scalar \$data;
}
else {
# CGI.pm sends us an Fh that isn't actually an IO::Handle, but
# has a method for getting an actual handle out of it.
if (!$fh->isa('IO::Handle')) {
$fh = $fh->handle;
# ->handle returns an literal IO::Handle, even though the
# underlying object is a file. So we rebless it to be a proper
# IO::File object so that we can call ->seek on it and so on.
# Just in case CGI.pm fixes this some day, we check ->isa first.
if (!$fh->isa('IO::File')) {
bless $fh, 'IO::File';
}
}
}
$mimetype = mimetype($fh);
$fh->seek(0, 0);
if ($mimetype) {
$attributes->{'mimetype'} = $mimetype;
}
}
}
__PACKAGE__->NAME;
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