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                 if (!$user->emailpost) {
  54                 }
  55                 $response = $this->handle_command($user, $msg);
  56                 if ($response) {
  57                         $this->respond($from, $to, $response);
  58                 }
  59                 $msg = $this->cleanup_msg($msg);
  60                 $this->add_notice($user, $msg);
  61         }
  62
  63         function error($from, $msg) {
  64                 file_put_contents("php://stderr", $msg . "\n");
  65                 exit(1);
  66         }
  67
  68         function user_from($from_hdr) {
  69                 $froms = mailparse_rfc822_parse_addresses($from_hdr);
  70                 if (!$froms) {
  71                         return NULL;
  72                 }
  73                 $from = $froms[0];
  74                 return User::staticGet('email', common_canonical_email($from['address']));
  75         }
  76
  77         function user_match_to($user, $to_hdr) {
  78                 $incoming = $user->incomingemail;
  79                 $tos = mailparse_rfc822_parse_addresses($to_hdr);
  80                 foreach ($tos as $to) {
  81                         if (strcasecmp($incoming, $to['address']) == 0) {
  82                                 return true;
  83                         }
  84                 }
  85                 return false;
  86         }
  87
  88         function handle_command($user, $msg) {
  89                 return false;
  90         }
  91
  92         function respond($from, $to, $response) {
  93
  94                 $headers['From'] = $to;
  95                 $headers['To'] = $from;
  96                 $headers['Subject'] = "Command complete";
  97
  98                 return mail_send(array($from), $headers, $response);
  99         }
 100
 101         function log($level, $msg) {
 102                 common_log($level, 'MailDaemon: '.$msg);
 103         }
 104
 105         function add_notice($user, $msg) {
 106                 $notice = new Notice();
 107                 $notice->profile_id = $user->id;
 108                 $notice->content = trim(substr($msg, 0, 140));
 109                 $notice->rendered = common_render_content($notice->content, $notice);
 110                 $notice->created = DB_DataObject_Cast::dateTime();
 111                 $notice->query('BEGIN');
 112                 $id = $notice->insert();
 113                 if (!$id) {
 114                         $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
 115                         $this->log(LOG_ERR,
 116                                            'Could not insert ' . common_log_objstring($notice) .
 117                                            ' for user ' . common_log_objstring($user) .
 118                                            ': ' . $last_error->message);
 119                         return;
 120                 }
 121                 $orig = clone($notice);
 122                 $notice->uri = common_notice_uri($notice);
 123                 $result = $notice->update($orig);
 124                 if (!$result) {
 125                         $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
 126                         $this->log(LOG_ERR,
 127                                            'Could not add URI to ' . common_log_objstring($notice) .
 128                                            ' for user ' . common_log_objstring($user) .
 129                                            ': ' . $last_error->message);
 130                         return;
 131                 }
 132                 $notice->query('COMMIT');
 133         common_save_replies($notice);
 134                 common_real_broadcast($notice);
 135                 $this->log(LOG_INFO,
 136                                    'Added notice ' . $notice->id . ' from user ' . $user->nickname);
 137         }
 138
 139         function parse_message($fname) {
 140                 $contents = file_get_contents($fname);
 141                 $parsed = Mail_mimeDecode::decode(array('input' => $contents,
 142                                                                                                 'include_bodies' => true,
 143                                                                                                 'decode_headers' => true,
 144                                                                                                 'decode_bodies' => true));
 145                 if (!$parsed) {
 146                         return NULL;
 147                 }
 148
 149                 $from = $parsed->headers['from'];
 150
 151                 $to = $parsed->headers['to'];
 152
 153                 $type = $parsed->ctype_primary . '/' . $parsed->ctype_secondary;
 154
 155                 if ($parsed->ctype_primary == 'multitype') {
 156                         foreach ($parsed->parts as $part) {
 157                                 if ($part->ctype_primary == 'text' &&
 158                                         $part->ctype_secondary == 'plain') {
 159                                         $msg = $part->body;
 160                                         break;
 161                                 }
 162                         }
 163                 } else if ($type == 'text/plain') {
 164                         $msg = $parsed->body;
 165                 } else {
 166                         $this->unsupported_type($type);
 167                 }
 168
 169                 return array($from, $to, $msg);
 170         }
 171
 172         function unsupported_type($type) {
 173                 $this->error(NULL, "Unsupported message type: " . $type);
 174         }
 175
 176         function cleanup_msg($msg) {
 177                 # XXX: signatures
 178                 # XXX: quoting
 179                 preg_replace('/\s+/', ' ', $msg);
 180                 return $msg;
 181         }
 182 }
 183
 184 $md = new MailerDaemon();
 185 $md->handle_message('php://stdin');