gnu-social/scripts/maildaemon.php

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#!/usr/bin/env php
<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, 2009, 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/>.
*/
define('INSTALLDIR', realpath(dirname(__FILE__) . '/..'));
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$helptext = <<<END_OF_HELP
Script for converting mail messages into notices. Takes message body
as STDIN.
END_OF_HELP;
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require_once INSTALLDIR.'/scripts/commandline.inc';
require_once(INSTALLDIR . '/lib/mail.php');
require_once('Mail/mimeDecode.php');
# FIXME: we use both Mail_mimeDecode and mailparse
# Need to move everything to mailparse
class MailerDaemon
{
function __construct()
{
}
function handle_message($fname='php://stdin')
{
list($from, $to, $msg, $attachments) = $this->parse_message($fname);
if (!$from || !$to || !$msg) {
$this->error(null, _('Could not parse message.'));
}
common_log(LOG_INFO, "Mail from $from to $to with ".count($attachments) .' attachment(s): ' .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);
$msg = common_shorten_links($msg);
if (mb_strlen($msg) > 140) {
$this->error($from,_('That\'s too long. '.
'Max notice size is 140 chars.'));
}
$fileRecords = array();
foreach($attachments as $attachment){
$mimetype = $this->getUploadedFileType($attachment);
$stream = stream_get_meta_data($attachment);
if (!$this->isRespectsQuota($user,filesize($stream['uri']))) {
die('error() should trigger an exception before reaching here.');
}
$filename = $this->saveFile($user, $attachment,$mimetype);
fclose($attachment);
if (empty($filename)) {
$this->error($from,_('Couldn\'t save file.'));
}
$fileRecord = $this->storeFile($filename, $mimetype);
$fileRecords[] = $fileRecord;
$fileurl = common_local_url('attachment',
array('attachment' => $fileRecord->id));
// not sure this is necessary -- Zach
$this->maybeAddRedir($fileRecord->id, $fileurl);
$short_fileurl = common_shorten_url($fileurl);
$msg .= ' ' . $short_fileurl;
if (mb_strlen($msg) > 140) {
$this->deleteFile($filename);
$this->error($from,_('Max notice size is 140 chars, including attachment URL.'));
}
// Also, not sure this is necessary -- Zach
$this->maybeAddRedir($fileRecord->id, $short_fileurl);
}
$err = $this->add_notice($user, $msg, $fileRecords);
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if (is_string($err)) {
$this->error($from, $err);
return false;
} else {
return true;
}
}
function saveFile($user, $attachment, $mimetype) {
$filename = File::filename($user->getProfile(), "email", $mimetype);
$filepath = File::path($filename);
$stream = stream_get_meta_data($attachment);
if (copy($stream['uri'], $filepath) && chmod($filepath,0664)) {
return $filename;
} else {
$this->error(null,_('File could not be moved to destination directory.' . $stream['uri'] . ' ' . $filepath));
}
}
function storeFile($filename, $mimetype) {
$file = new File;
$file->filename = $filename;
$file->url = File::url($filename);
$filepath = File::path($filename);
$file->size = filesize($filepath);
$file->date = time();
$file->mimetype = $mimetype;
$file_id = $file->insert();
if (!$file_id) {
common_log_db_error($file, "INSERT", __FILE__);
$this->error(null,_('There was a database error while saving your file. Please try again.'));
}
return $file;
}
function maybeAddRedir($file_id, $url)
{
$file_redir = File_redirection::staticGet('url', $url);
if (empty($file_redir)) {
$file_redir = new File_redirection;
$file_redir->url = $url;
$file_redir->file_id = $file_id;
$result = $file_redir->insert();
if (!$result) {
common_log_db_error($file_redir, "INSERT", __FILE__);
$this->error(null,_('There was a database error while saving your file. Please try again.'));
}
}
}
function getUploadedFileType($fileHandle) {
require_once 'MIME/Type.php';
$cmd = &PEAR::getStaticProperty('MIME_Type', 'fileCmd');
$cmd = common_config('attachments', 'filecommand');
$stream = stream_get_meta_data($fileHandle);
$filetype = MIME_Type::autoDetect($stream['uri']);
if (in_array($filetype, common_config('attachments', 'supported'))) {
return $filetype;
}
$media = MIME_Type::getMedia($filetype);
if ('application' !== $media) {
$hint = sprintf(_(' Try using another %s format.'), $media);
} else {
$hint = '';
}
$this->error(null,sprintf(
_('%s is not a supported filetype on this server.'), $filetype) . $hint);
}
function isRespectsQuota($user,$fileSize) {
$file = new File;
$ret = $file->isRespectsQuota($user,$fileSize);
if (true === $ret) return true;
$this->error(null,$ret);
}
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, $fileRecords)
{
$notice = Notice::saveNew($user->id, $msg, 'mail');
if (is_string($notice)) {
$this->log(LOG_ERR, $notice);
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return $notice;
}
foreach($fileRecords as $fileRecord){
$this->attachFile($notice, $fileRecord);
}
common_broadcast_notice($notice);
$this->log(LOG_INFO,
'Added notice ' . $notice->id . ' from user ' . $user->nickname);
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return true;
}
function attachFile($notice, $filerec)
{
File_to_post::processNew($filerec->id, $notice->id);
$this->maybeAddRedir($filerec->id,
common_local_url('file', array('notice' => $notice->id)));
}
function parse_message($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;
$attachments = array();
$this->extract_part($parsed,$msg,$attachments);
return array($from, $to, $msg, $attachments);
}
function extract_part($parsed,&$msg,&$attachments){
if ($parsed->ctype_primary == 'multipart') {
if($parsed->ctype_secondary == 'alternative'){
$altmsg = $this->extract_msg_from_multipart_alternative_part($parsed);
if(!empty($altmsg)) $msg = $altmsg;
}else{
foreach($parsed->parts as $part){
$this->extract_part($part,$msg,$attachments);
}
}
} else if ($parsed->ctype_primary == 'text'
&& $parsed->ctype_secondary=='plain') {
$msg = $parsed->body;
}else if(!empty($parsed->body)){
if(common_config('attachments', 'uploads')){
//only save attachments if uploads are enabled
$attachment = tmpfile();
fwrite($attachment, $parsed->body);
$attachments[] = $attachment;
}
}
}
function extract_msg_from_multipart_alternative_part($parsed){
foreach ($parsed->parts as $part) {
$this->extract_part($part,$msg,$attachments);
}
//we don't want any attachments that are a result of this parsing
return $msg;
}
function unsupported_type($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');