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#!/usr/bin/env php
<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Control Yourself, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
# Abort if called from a web server
if (isset($_SERVER) && array_key_exists('REQUEST_METHOD', $_SERVER)) {
print "This script must be run from the command line\n";
exit();
}
define('INSTALLDIR', realpath(dirname(__FILE__) . '/..'));
define('LACONICA', true);
require_once(INSTALLDIR . '/lib/common.php');
require_once(INSTALLDIR . '/lib/mail.php');
require_once('Mail/mimeDecode.php');
# FIXME: we use both Mail_mimeDecode and mailparse
# Need to move everything to mailparse
class MailerDaemon
{
function __construct()
{
}
function handle_message($fname='php://stdin')
{
list($from, $to, $msg) = $this->parse_message($fname);
if (!$from || !$to || !$msg) {
$this->error(null, _('Could not parse message.'));
}
common_log(LOG_INFO, "Mail from $from to $to: " .substr($msg, 0, 20));
$user = $this->user_from($from);
if (!$user) {
$this->error($from, _('Not a registered user.'));
return false;
}
if (!$this->user_match_to($user, $to)) {
$this->error($from, _('Sorry, that is not your incoming email address.'));
return false;
}
if (!$user->emailpost) {
$this->error($from, _('Sorry, no incoming email allowed.'));
return false;
}
$response = $this->handle_command($user, $from, $msg);
if ($response) {
return true;
}
$msg = $this->cleanup_msg($msg);
$err = $this->add_notice($user, $msg);
if (is_string($err)) {
$this->error($from, $err);
return false;
} else {
return true;
}
}
function error($from, $msg)
{
file_put_contents("php://stderr", $msg . "\n");
exit(1);
}
function user_from($from_hdr)
{
$froms = mailparse_rfc822_parse_addresses($from_hdr);
if (!$froms) {
return null;
}
$from = $froms[0];
$addr = common_canonical_email($from['address']);
$user = User::staticGet('email', $addr);
if (!$user) {
$user = User::staticGet('smsemail', $addr);
}
return $user;
}
function user_match_to($user, $to_hdr)
{
$incoming = $user->incomingemail;
$tos = mailparse_rfc822_parse_addresses($to_hdr);
foreach ($tos as $to) {
if (strcasecmp($incoming, $to['address']) == 0) {
return true;
}
}
return false;
}
function handle_command($user, $from, $msg)
{
$inter = new CommandInterpreter();
$cmd = $inter->handle_command($user, $msg);
if ($cmd) {
$cmd->execute(new MailChannel($from));
return true;
}
return false;
}
function respond($from, $to, $response)
{
$headers['From'] = $to;
$headers['To'] = $from;
$headers['Subject'] = "Command complete";
return mail_send(array($from), $headers, $response);
}
function log($level, $msg)
{
common_log($level, 'MailDaemon: '.$msg);
}
function add_notice($user, $msg)
{
$notice = Notice::saveNew($user->id, $msg, 'mail');
if (is_string($notice)) {
$this->log(LOG_ERR, $notice);
return $notice;
}
common_broadcast_notice($notice);
$this->log(LOG_INFO,
'Added notice ' . $notice->id . ' from user ' . $user->nickname);
return true;
}
function parse_message($fname)
{
$contents = file_get_contents($fname);
$parsed = Mail_mimeDecode::decode(array('input' => $contents,
'include_bodies' => true,
'decode_headers' => true,
'decode_bodies' => true));
if (!$parsed) {
return null;
}
$from = $parsed->headers['from'];
$to = $parsed->headers['to'];
$type = $parsed->ctype_primary . '/' . $parsed->ctype_secondary;
if ($parsed->ctype_primary == 'multipart') {
foreach ($parsed->parts as $part) {
if ($part->ctype_primary == 'text' &&
$part->ctype_secondary == 'plain') {
$msg = $part->body;
break;
}
}
} else if ($type == 'text/plain') {
$msg = $parsed->body;
} else {
$this->unsupported_type($type);
}
return array($from, $to, $msg);
}
function unsupported_type($type)
{
$this->error(null, "Unsupported message type: " . $type);
}
function cleanup_msg($msg)
{
$lines = explode("\n", $msg);
$output = '';
foreach ($lines as $line) {
// skip quotes
if (preg_match('/^\s*>.*$/', $line)) {
continue;
}
// skip start of quote
if (preg_match('/^\s*On.*wrote:\s*$/', $line)) {
continue;
}
// probably interesting to someone, not us
if (preg_match('/^\s*Sent via/', $line)) {
continue;
}
// skip everything after a sig
if (preg_match('/^\s*--+\s*$/', $line) ||
preg_match('/^\s*__+\s*$/', $line))
{
break;
}
// skip everything after Outlook quote
if (preg_match('/^\s*-+\s*Original Message\s*-+\s*$/', $line)) {
break;
}
// skip everything after weird forward
if (preg_match('/^\s*Begin\s+forward/', $line)) {
break;
}
$output .= ' ' . $line;
}
preg_replace('/\s+/', ' ', $output);
return trim($output);
}
}
$md = new MailerDaemon();
$md->handle_message('php://stdin');
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