maildaemon.php

   1 #!/usr/bin/env php
   2 <?php
   3 /*
   4  * Laconica - a distributed open-source microblogging tool
   5  * Copyright (C) 2008, Controlez-Vous, Inc.
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 # Abort if called from a web server
  22 if (isset($_SERVER) && array_key_exists('REQUEST_METHOD', $_SERVER)) {
  23         print "This script must be run from the command line\n";
  24         exit();
  25 }
  26
  27 define('INSTALLDIR', dirname(__FILE__));
  28 define('LACONICA', true);
  29
  30 require_once(INSTALLDIR . '/lib/common.php');
  31 require_once(INSTALLDIR . '/lib/mail.php');
  32 require_once('Mail/mimeDecode.php');
  33
  34 class MailerDaemon {
  35
  36         function __construct() {
  37         }
  38
  39         function handle_message($fname='php://stdin') {
  40                 list($from, $to, $msg) = $this->parse_message($fname);
  41                 if (!$from || !$to || !$msg) {
  42                         $this->error(NULL, _t('Could not parse message.'));
  43                 }
  44                 $user = User::staticGet('email', common_canonical_email($from));
  45                 if (!$user) {
  46                         $this->error($from, _('Not a registered user.'));
  47                         return false;
  48                 }
  49                 if ($user->incomingemail != common_canonical_email($to)) {
  50                         $this->error($from, _('Sorry, that is not your incoming email address.'));
  51                 }
  52                 $response = $this->handle_command($user, $msg);
  53                 if ($response) {
  54                         $this->respond($from, $to, $response);
  55                 }
  56                 $this->add_notice($user, $msg);
  57         }
  58
  59         function error($from, $msg) {
  60                 file_put_contents("php://stderr", $msg);
  61                 exit(1);
  62         }
  63
  64         function handle_command($user, $msg) {
  65                 return false;
  66         }
  67
  68         function respond($from, $to, $response) {
  69
  70                 $headers['From'] = $to;
  71                 $headers['To'] = $from;
  72                 $headers['Subject'] = "Command complete";
  73
  74                 return mail_send(array($from), $headers, $response);
  75         }
  76
  77         function log($level, $msg) {
  78                 common_log($level, 'MailDaemon: '.$msg);
  79         }
  80
  81         function add_notice($user, $msg) {
  82                 $notice = new Notice();
  83                 $notice->profile_id = $user->id;
  84                 $notice->content = trim(substr($msg, 0, 140));
  85                 $notice->rendered = common_render_content($notice->content, $notice);
  86                 $notice->created = DB_DataObject_Cast::dateTime();
  87                 $notice->query('BEGIN');
  88                 $id = $notice->insert();
  89                 if (!$id) {
  90                         $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
  91                         $this->log(LOG_ERROR,
  92                                            'Could not insert ' . common_log_objstring($notice) .
  93                                            ' for user ' . common_log_objstring($user) .
  94                                            ': ' . $last_error->message);
  95                         return;
  96                 }
  97                 $orig = clone($notice);
  98                 $notice->uri = common_notice_uri($notice);
  99                 $result = $notice->update($orig);
 100                 if (!$result) {
 101                         $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
 102                         $this->log(LOG_ERROR,
 103                                            'Could not add URI to ' . common_log_objstring($notice) .
 104                                            ' for user ' . common_log_objstring($user) .
 105                                            ': ' . $last_error->message);
 106                         return;
 107                 }
 108                 $notice->query('COMMIT');
 109         common_save_replies($notice);
 110                 common_real_broadcast($notice);
 111                 $this->log(LOG_INFO,
 112                                    'Added notice ' . $notice->id . ' from user ' . $user->nickname);
 113         }
 114
 115         function parse_message($fname) {
 116                 $contents = file_get_contents($fname);
 117                 $parsed = Mail_mimeDecode::decode(array('input' => $contents,
 118                                                                                                 'include_bodies' => true,
 119                                                                                                 'decode_headers' => true,
 120                                                                                                 'decode_bodies' => true));
 121                 if (!$parsed) {
 122                         return NULL;
 123                 }
 124                 $from = $parsed->headers['from'];
 125                 $to = $parsed->headers['to'];
 126
 127                 switch ($parsed->ctype_primary) {
 128                  case 'multitype':
 129                         # try and find a text/plain in the mix
 130                         foreach ($parsed->parts as $part) {
 131                                 if ($part->ctype_primary == 'text' &&
 132                                         $part->ctype_secondary == 'plain') {
 133                                         $msg = $part->body;
 134                                         break;
 135                                 }
 136                         }
 137                         break;
 138                  case 'text':
 139                         switch ($parsed->ctype_secondary) {
 140                          case 'plain':
 141                                 $msg = $parsed->body;
 142                                 break;
 143                          default:
 144                                 $this->unsupported_type($parsed);
 145                         }
 146                  default:
 147                         $this->unsupported_type($parsed);
 148                 }
 149
 150                 return array($from, $to, $msg);
 151         }
 152
 153         function unsupported_type($parsed) {
 154                 $this->error(NULL, "Unsupported message type: " . $parsed->ctype_primary . "/" . $parsed->ctype_secondary ."\n");
 155         }
 156 }
 157
 158 $md = new MailerDaemon();
 159 $md->handle_message('php://stdin');