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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): Terry Weissman <terry@mozilla.org>,
# Bryce Nesbitt <bryce-mozilla@nextbus.com>
# Dan Mosedale <dmose@mozilla.org>
# Alan Raetz <al_raetz@yahoo.com>
# Jacob Steenhagen <jake@actex.net>
# Matthew Tuck <matty@chariot.net.au>
# Bradley Baetz <bbaetz@student.usyd.edu.au>
# J. Paul Reed <preed@sigkill.com>
# Gervase Markham <gerv@gerv.net>
# Byron Jones <bugzilla@glob.com.au>
# Frédéric Buclin <LpSolit@gmail.com>
package Bugzilla::Mailer;
use strict;
use base qw(Exporter);
@Bugzilla::Mailer::EXPORT = qw(MessageToMTA);
use Bugzilla::Constants;
use Bugzilla::Util;
use Mail::Header;
use Mail::Mailer;
use Mail::Address;
use MIME::Parser;
use MIME::QuotedPrint;
use MIME::Base64;
sub MessageToMTA {
my ($msg) = (@_);
my $params = Bugzilla->params;
return if ($params->{'mail_delivery_method'} eq "none");
my ($header, $body) = $msg =~ /(.*?\n)\n(.*)/s ? ($1, $2) : ('', $msg);
my $headers;
if ($params->{'utf8'}
and (!is_7bit_clean($header) or !is_7bit_clean($body)))
{
($headers, $body) = encode_message($msg);
} else {
my @header_lines = split(/\n/, $header);
$headers = new Mail::Header \@header_lines, Modify => 0;
}
# Use trim to remove any whitespace (incl. newlines)
my $from = trim($headers->get('from'));
if ($params->{"mail_delivery_method"} eq "sendmail" && $^O =~ /MSWin32/i) {
my $cmd = '|' . SENDMAIL_EXE . ' -t -i';
if ($from) {
# We're on Windows, thus no danger of command injection
# via $from. In other words, it is safe to embed $from.
$cmd .= qq# -f"$from"#;
}
open(SENDMAIL, $cmd) ||
die "Failed to execute " . SENDMAIL_EXE . ": $!\n";
print SENDMAIL $headers->as_string;
print SENDMAIL "\n";
print SENDMAIL $body;
close SENDMAIL;
return;
}
my @args;
if ($params->{"mail_delivery_method"} eq "sendmail") {
push @args, "-i";
if ($from) {
push(@args, "-f$from");
}
}
if ($params->{"mail_delivery_method"} eq "sendmail"
&& !$params->{"sendmailnow"})
{
push @args, "-ODeliveryMode=deferred";
}
if ($params->{"mail_delivery_method"} eq "smtp") {
push @args, Server => $params->{"smtpserver"};
if ($from) {
$ENV{'MAILADDRESS'} = $from;
}
}
my $mailer = new Mail::Mailer($params->{"mail_delivery_method"}, @args);
if ($params->{"mail_delivery_method"} eq "testfile") {
$Mail::Mailer::testfile::config{outfile} =
bz_locations()->{'datadir'} . '/mailer.testfile';
}
$mailer->open($headers->header_hashref);
print $mailer $body;
$mailer->close;
}
sub encode_message {
my ($msg) = @_;
my $parser = MIME::Parser->new;
$parser->output_to_core(1);
$parser->tmp_to_core(1);
my $entity = $parser->parse_data($msg);
$entity = encode_message_entity($entity);
my @header_lines = split(/\n/, $entity->header_as_string);
my $head = new Mail::Header \@header_lines, Modify => 0;
my $body = $entity->body_as_string;
return ($head, $body);
}
sub encode_message_entity {
my ($entity) = @_;
my $head = $entity->head;
# encode the subject
my $subject = $head->get('subject');
if (defined $subject && !is_7bit_clean($subject)) {
$subject =~ s/[\r\n]+$//;
$head->replace('subject', encode_qp_words($subject));
}
# encode addresses
foreach my $field (qw(from to cc reply-to sender errors-to)) {
my $high = $head->count($field) - 1;
foreach my $index (0..$high) {
my $value = $head->get($field, $index);
my @addresses;
my $changed = 0;
foreach my $addr (Mail::Address->parse($value)) {
my $phrase = $addr->phrase;
if (is_7bit_clean($phrase)) {
push @addresses, $addr->format;
} else {
push @addresses, encode_qp_phrase($phrase) .
' <' . $addr->address . '>';
$changed = 1;
}
}
$changed && $head->replace($field, join(', ', @addresses), $index);
}
}
# process the body
if (scalar($entity->parts)) {
my $newparts = [];
foreach my $part ($entity->parts) {
my $newpart = encode_message_entity($part);
push @$newparts, $newpart;
}
$entity->parts($newparts);
}
else {
# Extract the body from the entity, for examination
# At this point, we can rely on MIME::Tools to do our encoding for us!
my $bodyhandle = $entity->bodyhandle;
my $body = $bodyhandle->as_string;
if (!is_7bit_clean($body)) {
# count number of 7-bit chars, and use quoted-printable if more
# than half the message is 7-bit clean
my $count = ($body =~ tr/\x20-\x7E\x0A\x0D//);
if ($count > length($body) / 2) {
$head->mime_attr('Content-Transfer-Encoding' => 'quoted-printable');
} else {
$head->mime_attr('Content-Transfer-Encoding' => 'base64');
}
}
# Set the content/type and charset of the part, if not set
$head->mime_attr('Content-Type' => 'text/plain')
unless defined $head->mime_attr('content-type');
$head->mime_attr('Content-Type.charset' => 'UTF-8');
}
$head->mime_attr('MIME-Version' => '1.0');
$head->fold(75);
return $entity;
}
sub encode_qp_words {
my ($line) = (@_);
my @encoded;
foreach my $word (split / /, $line) {
if (!is_7bit_clean($word)) {
push @encoded, '=?UTF-8?Q?_' . encode_qp($word, '') . '?=';
} else {
push @encoded, $word;
}
}
return join(' ', @encoded);
}
1;
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