gnu-social/maildaemon.php

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#!/usr/bin/env php
<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, 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', $_SERVER)) {
print "This script must be run from the command line\n";
exit();
}
define('INSTALLDIR', dirname(__FILE__));
define('LACONICA', true);
require_once(INSTALLDIR . '/lib/common.php');
require_once(INSTALLDIR . '/lib/mail.php');
require_once('Mail/mimeDecode.php');
class MailerDaemon {
function __construct() {
}
function handle_message($fname='php://stdin') {
list($from, $to, $msg) = $this->parse_message($fname);
if (!$from || !$to || !$msg) {
$this->error(NULL, _t('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.'));
}
$response = $this->handle_command($user, $msg);
if ($response) {
$this->respond($from, $to, $response);
}
$msg = $this->cleanup_msg($msg);
$this->add_notice($user, $msg);
}
function error($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 = $froms[0];
return User::staticGet('email', common_canonical_email($from['address']));
}
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, $msg) {
return false;
}
function respond($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 = new Notice();
$notice->profile_id = $user->id;
$notice->content = trim(substr($msg, 0, 140));
$notice->rendered = common_render_content($notice->content, $notice);
$notice->created = DB_DataObject_Cast::dateTime();
$notice->query('BEGIN');
$id = $notice->insert();
if (!$id) {
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
$this->log(LOG_ERR,
'Could not insert ' . common_log_objstring($notice) .
' for user ' . common_log_objstring($user) .
': ' . $last_error->message);
return;
}
$orig = clone($notice);
$notice->uri = common_notice_uri($notice);
$result = $notice->update($orig);
if (!$result) {
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
$this->log(LOG_ERR,
'Could not add URI to ' . common_log_objstring($notice) .
' for user ' . common_log_objstring($user) .
': ' . $last_error->message);
return;
}
$notice->query('COMMIT');
common_save_replies($notice);
common_real_broadcast($notice);
$this->log(LOG_INFO,
'Added notice ' . $notice->id . ' from user ' . $user->nickname);
}
function parse_message($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 == 'multitype') {
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) {
# XXX: signatures
# XXX: quoting
preg_replace('/\s+/', ' ', $msg);
return $msg;
}
}
$md = new MailerDaemon();
$md->handle_message('php://stdin');