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                 common_log(LOG_INFO, "Mail from $from to $to: " .substr($msg, 0, 20));
  45                 $user = $this->user_from($from);
  46                 if (!$user) {
  47                         $this->error($from, _('Not a registered user.'));
  48                         return false;
  49                 }
  50                 if (!$this->user_match_to($user, $to)) {
  51                         $this->error($from, _('Sorry, that is not your incoming email address.'));
  52                 }
  53                 $response = $this->handle_command($user, $msg);
  54                 if ($response) {
  55                         $this->respond($from, $to, $response);
  56                 }
  57                 $msg = $this->cleanup_msg($msg);
  58                 $this->add_notice($user, $msg);
  59         }
  60
  61         function error($from, $msg) {
  62                 file_put_contents("php://stderr", $msg . "\n");
  63                 exit(1);
  64         }
  65
  66         function user_from($from_hdr) {
  67                 $froms = mailparse_rfc822_parse_addresses($from_hdr);
  68                 if (!$froms) {
  69                         return NULL;
  70                 }
  71                 $from = $froms[0];
  72                 return User::staticGet('email', common_canonical_email($from['address']));
  73         }
  74
  75         function user_match_to($user, $to_hdr) {
  76                 $incoming = $user->incomingemail;
  77                 $tos = mailparse_rfc822_parse_addresses($to_hdr);
  78                 foreach ($tos as $to) {
  79                         if (strcasecmp($incoming, $to['address']) == 0) {
  80                                 return true;
  81                         }
  82                 }
  83                 return false;
  84         }
  85
  86         function handle_command($user, $msg) {
  87                 return false;
  88         }
  89
  90         function respond($from, $to, $response) {
  91
  92                 $headers['From'] = $to;
  93                 $headers['To'] = $from;
  94                 $headers['Subject'] = "Command complete";
  95
  96                 return mail_send(array($from), $headers, $response);
  97         }
  98
  99         function log($level, $msg) {
 100                 common_log($level, 'MailDaemon: '.$msg);
 101         }
 102
 103         function add_notice($user, $msg) {
 104                 $notice = new Notice();
 105                 $notice->profile_id = $user->id;
 106                 $notice->content = trim(substr($msg, 0, 140));
 107                 $notice->rendered = common_render_content($notice->content, $notice);
 108                 $notice->created = DB_DataObject_Cast::dateTime();
 109                 $notice->query('BEGIN');
 110                 $id = $notice->insert();
 111                 if (!$id) {
 112                         $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
 113                         $this->log(LOG_ERR,
 114                                            'Could not insert ' . common_log_objstring($notice) .
 115                                            ' for user ' . common_log_objstring($user) .
 116                                            ': ' . $last_error->message);
 117                         return;
 118                 }
 119                 $orig = clone($notice);
 120                 $notice->uri = common_notice_uri($notice);
 121                 $result = $notice->update($orig);
 122                 if (!$result) {
 123                         $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
 124                         $this->log(LOG_ERR,
 125                                            'Could not add URI to ' . common_log_objstring($notice) .
 126                                            ' for user ' . common_log_objstring($user) .
 127                                            ': ' . $last_error->message);
 128                         return;
 129                 }
 130                 $notice->query('COMMIT');
 131         common_save_replies($notice);
 132                 common_real_broadcast($notice);
 133                 $this->log(LOG_INFO,
 134                                    'Added notice ' . $notice->id . ' from user ' . $user->nickname);
 135         }
 136
 137         function parse_message($fname) {
 138                 $contents = file_get_contents($fname);
 139                 $parsed = Mail_mimeDecode::decode(array('input' => $contents,
 140                                                                                                 'include_bodies' => true,
 141                                                                                                 'decode_headers' => true,
 142                                                                                                 'decode_bodies' => true));
 143                 if (!$parsed) {
 144                         return NULL;
 145                 }
 146
 147                 $from = $parsed->headers['from'];
 148
 149                 $to = $parsed->headers['to'];
 150
 151                 $type = $parsed->ctype_primary . '/' . $parsed->ctype_secondary;
 152
 153                 if ($parsed->ctype_primary == 'multitype') {
 154                         foreach ($parsed->parts as $part) {
 155                                 if ($part->ctype_primary == 'text' &&
 156                                         $part->ctype_secondary == 'plain') {
 157                                         $msg = $part->body;
 158                                         break;
 159                                 }
 160                         }
 161                 } else if ($type == 'text/plain') {
 162                         $msg = $parsed->body;
 163                 } else {
 164                         $this->unsupported_type($type);
 165                 }
 166
 167                 return array($from, $to, $msg);
 168         }
 169
 170         function unsupported_type($type) {
 171                 $this->error(NULL, "Unsupported message type: " . $type);
 172         }
 173
 174         function cleanup_msg($msg) {
 175                 # XXX: signatures
 176                 # XXX: quoting
 177                 preg_replace('/\s+/', ' ', $msg);
 178                 return $msg;
 179         }
 180 }
 181
 182 $md = new MailerDaemon();
 183 $md->handle_message('php://stdin');