scripts/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', $_SERVER)) {
  23         print "This script must be run from the command line\n";
  24         exit();
  25 }
  26
  27 define('INSTALLDIR', realpath(dirname(__FILE__) . '/..'));
  28 define('LACONICA', true);
  29
  30 require_once(INSTALLDIR . '/lib/common.php');
  31 require_once(INSTALLDIR . '/lib/mail.php');
  32 require_once('Mail/mimeDecode.php');
  33
  34 # FIXME: we use both Mail_mimeDecode and mailparse
  35 # Need to move everything to mailparse
  36
  37 class MailerDaemon {
  38
  39         function __construct() {
  40         }
  41
  42         function handle_message($fname='php://stdin') {
  43                 list($from, $to, $msg) = $this->parse_message($fname);
  44                 if (!$from || !$to || !$msg) {
  45                         $this->error(NULL, _t('Could not parse message.'));
  46                 }
  47                 common_log(LOG_INFO, "Mail from $from to $to: " .substr($msg, 0, 20));
  48                 $user = $this->user_from($from);
  49                 if (!$user) {
  50                         $this->error($from, _('Not a registered user.'));
  51                         return false;
  52                 }
  53                 if (!$this->user_match_to($user, $to)) {
  54                         $this->error($from, _('Sorry, that is not your incoming email address.'));
  55                         return false;
  56                 }
  57                 if (!$user->emailpost) {
  58                         $this->error($from, _('Sorry, no incoming email allowed.'));
  59                         return false;
  60                 }
  61                 $response = $this->handle_command($user, $msg);
  62                 if ($response) {
  63                         $this->respond($from, $to, $response);
  64                         return true;
  65                 }
  66                 $msg = $this->cleanup_msg($msg);
  67                 $this->add_notice($user, $msg);
  68         }
  69
  70         function error($from, $msg) {
  71                 file_put_contents("php://stderr", $msg . "\n");
  72                 exit(1);
  73         }
  74
  75         function user_from($from_hdr) {
  76                 $froms = mailparse_rfc822_parse_addresses($from_hdr);
  77                 if (!$froms) {
  78                         return NULL;
  79                 }
  80                 $from = $froms[0];
  81                 $addr = common_canonical_email($from['address']);
  82                 $user = User::staticGet('email', $addr);
  83                 if (!$user) {
  84                         $user = User::staticGet('smsemail', $addr);
  85                 }
  86                 return $user;
  87         }
  88
  89         function user_match_to($user, $to_hdr) {
  90                 $incoming = $user->incomingemail;
  91                 $tos = mailparse_rfc822_parse_addresses($to_hdr);
  92                 foreach ($tos as $to) {
  93                         if (strcasecmp($incoming, $to['address']) == 0) {
  94                                 return true;
  95                         }
  96                 }
  97                 return false;
  98         }
  99
 100         function handle_command($user, $msg) {
 101                 $cmd = trim(strtolower($msg));
 102                 switch ($cmd) {
 103                  case 'off':
 104                         $this->set_notify($user, false);
 105                         return true;
 106                  case 'on':
 107                         $this->set_notify($user, true);
 108                         return true;
 109                  default:
 110                         return false;
 111                 }
 112         }
 113
 114         function set_notify($user, $value) {
 115                 $orig = clone($user);
 116                 $user->smsnotify = $value;
 117                 $result = $user->update($orig);
 118                 if (!$result) {
 119                         common_log_db_error($user, 'UPDATE', __FILE__);
 120                         return false;
 121                 }
 122                 return true;
 123         }
 124
 125         function respond($from, $to, $response) {
 126
 127                 $headers['From'] = $to;
 128                 $headers['To'] = $from;
 129                 $headers['Subject'] = "Command complete";
 130
 131                 return mail_send(array($from), $headers, $response);
 132         }
 133
 134         function log($level, $msg) {
 135                 common_log($level, 'MailDaemon: '.$msg);
 136         }
 137
 138         function add_notice($user, $msg) {
 139                 $notice = Notice::saveNew($user->id, $msg, 'mail');
 140                 if (is_string($notice)) {
 141                         $this->log(LOG_ERR, $notice);
 142                         return;
 143                 }
 144                 common_broadcast_notice($notice);
 145                 $this->log(LOG_INFO,
 146                                    'Added notice ' . $notice->id . ' from user ' . $user->nickname);
 147         }
 148
 149         function parse_message($fname) {
 150                 $contents = file_get_contents($fname);
 151                 $parsed = Mail_mimeDecode::decode(array('input' => $contents,
 152                                                                                                 'include_bodies' => true,
 153                                                                                                 'decode_headers' => true,
 154                                                                                                 'decode_bodies' => true));
 155                 if (!$parsed) {
 156                         return NULL;
 157                 }
 158
 159                 $from = $parsed->headers['from'];
 160
 161                 $to = $parsed->headers['to'];
 162
 163                 $type = $parsed->ctype_primary . '/' . $parsed->ctype_secondary;
 164
 165                 if ($parsed->ctype_primary == 'multipart') {
 166                         foreach ($parsed->parts as $part) {
 167                                 if ($part->ctype_primary == 'text' &&
 168                                         $part->ctype_secondary == 'plain') {
 169                                         $msg = $part->body;
 170                                         break;
 171                                 }
 172                         }
 173                 } else if ($type == 'text/plain') {
 174                         $msg = $parsed->body;
 175                 } else {
 176                         $this->unsupported_type($type);
 177                 }
 178
 179                 return array($from, $to, $msg);
 180         }
 181
 182         function unsupported_type($type) {
 183                 $this->error(NULL, "Unsupported message type: " . $type);
 184         }
 185
 186         function cleanup_msg($msg) {
 187                 $lines = explode("\n", $msg);
 188
 189                 $output = '';
 190
 191                 foreach ($lines as $line) {
 192                         // skip quotes
 193                         if (preg_match('/^\s*>.*$/', $line)) {
 194                                 continue;
 195                         }
 196                         // skip start of quote
 197                         if (preg_match('/^\s*On.*wrote:\s*$/', $line)) {
 198                                 continue;
 199                         }
 200                         // probably interesting to someone, not us
 201                         if (preg_match('/^\s*Sent via/', $line)) {
 202                                 continue;
 203                         }
 204                         // skip everything after a sig
 205                         if (preg_match('/^\s*--+\s*$/', $line) ||
 206                                 preg_match('/^\s*__+\s*$/', $line))
 207                         {
 208                                 break;
 209                         }
 210                         // skip everything after Outlook quote
 211                         if (preg_match('/^\s*-+\s*Original Message\s*-+\s*$/', $line)) {
 212                                 break;
 213                         }
 214                         // skip everything after weird forward
 215                         if (preg_match('/^\s*Begin\s+forward/', $line)) {
 216                                 break;
 217                         }
 218
 219                         $output .= ' ' . $line;
 220                 }
 221
 222                 preg_replace('/\s+/', ' ', $output);
 223                 return trim($output);
 224         }
 225 }
 226
 227 $md = new MailerDaemon();
 228 $md->handle_message('php://stdin');