mod/dfrn_notify.php

   1 <?php
   2
   3 require_once('simplepie/simplepie.inc');
   4 require_once('include/items.php');
   5
   6
   7 function dfrn_notify_post(&$a) {
   8
   9         $dfrn_id      = ((x($_POST,'dfrn_id'))      ? notags(trim($_POST['dfrn_id']))   : '');
  10         $dfrn_version = ((x($_POST,'dfrn_version')) ? (float) $_POST['dfrn_version']    : 2.0);
  11         $challenge    = ((x($_POST,'challenge'))    ? notags(trim($_POST['challenge'])) : '');
  12         $data         = ((x($_POST,'data'))         ? $_POST['data']                    : '');
  13         $key          = ((x($_POST,'key'))          ? $_POST['key']                     : '');
  14
  15         $direction = (-1);
  16         if(strpos($dfrn_id,':') == 1) {
  17                 $direction = intval(substr($dfrn_id,0,1));
  18                 $dfrn_id = substr($dfrn_id,2);
  19         }
  20
  21         $r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
  22                 dbesc($dfrn_id),
  23                 dbesc($challenge)
  24         );
  25         if(! count($r)) {
  26                 logger('dfrn_notify: could not match challenge to dfrn_id ' . $dfrn_id);
  27                 xml_status(3);
  28         }
  29
  30         $r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
  31                 dbesc($dfrn_id),
  32                 dbesc($challenge)
  33         );
  34
  35         // find the local user who owns this relationship.
  36
  37         $sql_extra = '';
  38         switch($direction) {
  39                 case (-1):
  40                         $sql_extra = sprintf(" AND ( `issued-id` = '%s' OR `dfrn-id` = '%s' ) ", dbesc($dfrn_id), dbesc($dfrn_id));
  41                         break;
  42                 case 0:
  43                         $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  44                         break;
  45                 case 1:
  46                         $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  47                         break;
  48                 default:
  49                         xml_status(3);
  50                         break; // NOTREACHED
  51         }
  52
  53
  54         $r = q("SELECT `contact`.*, `contact`.`uid` AS `importer_uid`,
  55                 `contact`.`pubkey` AS `cpubkey`, `contact`.`prvkey` AS `cprvkey`, `user`.* FROM `contact`
  56                 LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
  57                 WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0
  58                 AND `user`.`nickname` = '%s' $sql_extra LIMIT 1",
  59                 dbesc($a->argv[1])
  60         );
  61
  62         if(! count($r)) {
  63                 logger('dfrn_notify: contact not found for dfrn_id ' . $dfrn_id);
  64                 xml_status(3);
  65                 //NOTREACHED
  66         }
  67
  68         $importer = $r[0];
  69
  70         logger('dfrn_notify: received notify from ' . $importer['name'] . ' for ' . $importer['username']);
  71         logger('dfrn_notify: data: ' . $data, LOGGER_DATA);
  72
  73         if($importer['readonly']) {
  74                 // We aren't receiving stuff from this person. But we will quietly ignore them
  75                 // rather than a blatant "go away" message.
  76                 logger('dfrn_notify: ignoring');
  77                 xml_status(0);
  78                 //NOTREACHED
  79         }
  80
  81         if(strlen($key)) {
  82                 $rawkey = hex2bin(trim($key));
  83                 logger('rino: md5 raw key: ' . md5($rawkey));
  84                 $final_key = '';
  85
  86                 if((($importer['duplex']) && strlen($importer['cpubkey'])) || (! strlen($importer['cprvkey']))) {
  87                         openssl_public_decrypt($rawkey,$final_key,$importer['cpubkey']);
  88                 }
  89                 else {
  90                         openssl_private_decrypt($rawkey,$final_key,$importer['cprvkey']);
  91                 }
  92
  93                 logger('rino: received key : ' . $final_key);
  94                 $data = aes_decrypt(hex2bin($data),$final_key);
  95                 logger('rino: decrypted data: ' . $data, LOGGER_DATA);
  96         }
  97
  98         // Consume notification feed. This may differ from consuming a public feed in several ways
  99         // - might contain email
 100         // - might contain remote followup to our message
 101         //              - in which case we need to accept it and then notify other conversants
 102         // - we may need to send various email notifications
 103
 104         $feed = new SimplePie();
 105         $feed->set_raw_data($data);
 106         $feed->enable_order_by_date(false);
 107         $feed->init();
 108
 109         $ismail = false;
 110
 111         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
 112         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
 113
 114                 logger('dfrn_notify: private message received');
 115
 116                 $ismail = true;
 117                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
 118
 119                 $msg = array();
 120                 $msg['uid'] = $importer['importer_uid'];
 121                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
 122                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
 123                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
 124                 $msg['contact-id'] = $importer['id'];
 125                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
 126                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
 127                 $msg['seen'] = 0;
 128                 $msg['replied'] = 0;
 129                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
 130                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
 131                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
 132
 133                 dbesc_array($msg);
 134
 135                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
 136                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
 137
 138                 // send email notification if requested.
 139
 140                 require_once('bbcode.php');
 141                 if($importer['notify-flags'] & NOTIFY_MAIL) {
 142
 143                         $body = html_entity_decode(strip_tags(bbcode(stripslashes($msg['body']))),ENT_QUOTES,'UTF-8');
 144
 145                         if(function_exists('quoted_printable_encode'))
 146                                 $body = quoted_printable_encode($body);
 147                         else
 148                                 $body = qp($body);
 149
 150                         $tpl = load_view_file('view/mail_received_eml.tpl');
 151                         $email_tpl = replace_macros($tpl, array(
 152                                 '$sitename' => $a->config['sitename'],
 153                                 '$siteurl' =>  $a->get_baseurl(),
 154                                 '$username' => $importer['username'],
 155                                 '$email' => $importer['email'],
 156                                 '$from' => $msg['from-name'],
 157                                 '$title' => stripslashes($msg['title']),
 158                                 '$body' => $body
 159                         ));
 160
 161                         $res = mail($importer['email'], t('New mail received at ') . $a->config['sitename'],
 162                                 $email_tpl, 'From: ' . t('Administrator') . '@' . $a->get_hostname() . "\r\n"
 163                                         . 'MIME-Version: 1.0' . "\r\n"
 164                                         . 'Content-type: text/plain; charset=UTF-8' . "\r\n"
 165                                         . 'Content-transfer-encoding: quoted-printable' . "\r\n"
 166                         );
 167                 }
 168                 xml_status(0);
 169                 // NOTREACHED
 170         }
 171
 172         logger('dfrn_notify: feed item count = ' . $feed->get_item_quantity());
 173
 174         foreach($feed->get_items() as $item) {
 175
 176                 $deleted = false;
 177
 178                 $rawdelete = $item->get_item_tags( NAMESPACE_TOMB , 'deleted-entry');
 179                 if(isset($rawdelete[0]['attribs']['']['ref'])) {
 180                         $uri = $rawthread[0]['attribs']['']['ref'];
 181                         $deleted = true;
 182                         if(isset($rawdelete[0]['attribs']['']['when'])) {
 183                                 $when = $rawthread[0]['attribs']['']['when'];
 184                                 $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
 185                         }
 186                         else
 187                                 $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
 188                 }
 189                 if($deleted) {
 190                         $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 191                                 dbesc($uri),
 192                                 intval($importer['importer_uid'])
 193                         );
 194                         if(count($r)) {
 195                                 $item = $r[0];
 196                                 if($item['uri'] == $item['parent-uri']) {
 197                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
 198                                                 WHERE `parent-uri` = '%s' AND `uid` = %d",
 199                                                 dbesc($when),
 200                                                 dbesc(datetime_convert()),
 201                                                 dbesc($item['uri']),
 202                                                 intval($importer['importer_uid'])
 203                                         );
 204                                 }
 205                                 else {
 206                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
 207                                                 WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 208                                                 dbesc($when),
 209                                                 dbesc(datetime_convert()),
 210                                                 dbesc($uri),
 211                                                 intval($importer['importer_uid'])
 212                                         );
 213                                         if($item['last-child']) {
 214                                                 // ensure that last-child is set in case the comment that had it just got wiped.
 215                                                 $q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
 216                                                         dbesc(datetime_convert()),
 217                                                         dbesc($item['parent-uri']),
 218                                                         intval($item['uid'])
 219                                                 );
 220                                                 // who is the last child now?
 221                                                 $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
 222                                                         ORDER BY `created` DESC LIMIT 1",
 223                                                                 dbesc($item['parent-uri']),
 224                                                                 intval($importer['importer_uid'])
 225                                                 );
 226                                                 if(count($r)) {
 227                                                         q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
 228                                                                 intval($r[0]['id'])
 229                                                         );
 230                                                 }
 231                                         }
 232                                 }
 233                         }
 234                         continue;
 235                 }
 236
 237                 $is_reply = false;
 238                 $item_id = $item->get_id();
 239                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
 240                 if(isset($rawthread[0]['attribs']['']['ref'])) {
 241                         $is_reply = true;
 242                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
 243                 }
 244
 245                 if($is_reply) {
 246                         if($feed->get_item_quantity() == 1) {
 247                                 logger('dfrn_notify: received remote comment');
 248                                 // remote reply to our post. Import and then notify everybody else.
 249                                 $datarray = get_atom_elements($feed,$item);
 250                                 $datarray['type'] = 'remote-comment';
 251                                 $datarray['wall'] = 1;
 252                                 $datarray['parent-uri'] = $parent_uri;
 253                                 $datarray['uid'] = $importer['importer_uid'];
 254                                 $datarray['contact-id'] = $importer['id'];
 255                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
 256                                         $datarray['type'] = 'activity';
 257                                         $datarray['gravity'] = GRAVITY_LIKE;
 258                                 }
 259                                 $posted_id = item_store($datarray);
 260
 261                                 if($posted_id) {
 262                                         $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 263                                                 intval($posted_id),
 264                                                 intval($importer['importer_uid'])
 265                                         );
 266                                         if(count($r)) {
 267                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
 268                                                         dbesc(datetime_convert()),
 269                                                         intval($importer['importer_uid']),
 270                                                         intval($r[0]['parent'])
 271                                                 );
 272                                         }
 273                                         $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
 274                                                         dbesc(datetime_convert()),
 275                                                         intval($importer['importer_uid']),
 276                                                         intval($posted_id)
 277                                         );
 278
 279                                         $php_path = ((strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');
 280
 281                                         proc_close(proc_open("\"$php_path\" \"include/notifier.php\" \"comment-import\" \"$posted_id\" &",
 282                                                 array(),$foo));
 283
 284                                         if(($importer['notify-flags'] & NOTIFY_COMMENT) && (! $importer['self'])) {
 285                                                 require_once('bbcode.php');
 286                                                 $from = stripslashes($datarray['author-name']);
 287                                                 $tpl = load_view_file('view/cmnt_received_eml.tpl');
 288                                                 $email_tpl = replace_macros($tpl, array(
 289                                                         '$sitename' => $a->config['sitename'],
 290                                                         '$siteurl' =>  $a->get_baseurl(),
 291                                                         '$username' => $importer['username'],
 292                                                         '$email' => $importer['email'],
 293                                                         '$display' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $posted_id,
 294                                                         '$from' => $from,
 295                                                         '$body' => strip_tags(bbcode(stripslashes($datarray['body'])))
 296                                                 ));
 297
 298                                                 $res = mail($importer['email'], $from . t(" commented on an item at ") . $a->config['sitename'],
 299                                                         $email_tpl,t("From: Administrator@") . $a->get_hostname() );
 300                                         }
 301                                 }
 302                                 xml_status(0);
 303                                 // NOTREACHED
 304
 305                         }
 306                         else {
 307                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
 308
 309                                 $item_id = $item->get_id();
 310
 311                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 312                                         dbesc($item_id),
 313                                         intval($importer['importer_uid'])
 314                                 );
 315                                 // FIXME update content if 'updated' changes
 316                                 if(count($r)) {
 317                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
 318                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 319                                                 $r = q("UPDATE `item` SET `last-child` = %d, `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 320                                                         intval($allow[0]['data']),
 321                                                         dbesc(datetime_convert()),
 322                                                         dbesc($item_id),
 323                                                         intval($importer['importer_uid'])
 324                                                 );
 325                                         }
 326                                         continue;
 327                                 }
 328                                 $datarray = get_atom_elements($feed,$item);
 329                                 $datarray['parent-uri'] = $parent_uri;
 330                                 $datarray['uid'] = $importer['importer_uid'];
 331                                 $datarray['contact-id'] = $importer['id'];
 332                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
 333                                         $datarray['type'] = 'activity';
 334                                         $datarray['gravity'] = GRAVITY_LIKE;
 335                                 }
 336
 337                                 $r = item_store($datarray);
 338
 339                                 // find out if our user is involved in this conversation and wants to be notified.
 340
 341                                 if(($datarray['type'] != 'activity') && ($importer['notify-flags'] & NOTIFY_COMMENT)) {
 342
 343                                         $myconv = q("SELECT `author-link` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d",
 344                                                 dbesc($parent_uri),
 345                                                 intval($importer['importer_uid'])
 346                                         );
 347                                         if(count($myconv)) {
 348                                                 foreach($myconv as $conv) {
 349                                                         if($conv['author-link'] != $importer['url'])
 350                                                                 continue;
 351                                                         require_once('bbcode.php');
 352                                                         $from = stripslashes($datarray['author-name']);
 353                                                         $tpl = load_view_file('view/cmnt_received_eml.tpl');
 354                                                         $email_tpl = replace_macros($tpl, array(
 355                                                                 '$sitename' => $a->config['sitename'],
 356                                                                 '$siteurl' =>  $a->get_baseurl(),
 357                                                                 '$username' => $importer['username'],
 358                                                                 '$email' => $importer['email'],
 359                                                                 '$from' => $from,
 360                                                                 '$display' => $a->get_baseurl() . '/display/' . $r,
 361                                                                 '$body' => strip_tags(bbcode(stripslashes($datarray['body'])))
 362                                                         ));
 363
 364                                                         $res = mail($importer['email'], $from . t(" commented on an item at ")
 365                                                                 . $a->config['sitename'],
 366                                                                 $email_tpl,t("From: Administrator@") . $a->get_hostname() );
 367                                                         break;
 368                                                 }
 369                                         }
 370                                 }
 371                                 continue;
 372                         }
 373                 }
 374                 else {
 375                         // Head post of a conversation. Have we seen it? If not, import it.
 376
 377                         $item_id = $item->get_id();
 378                         $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 379                                 dbesc($item_id),
 380                                 intval($importer['importer_uid'])
 381                         );
 382                         if(count($r)) {
 383                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
 384                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 385                                         $r = q("UPDATE `item` SET `last-child` = %d, `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 386                                                 intval($allow[0]['data']),
 387                                                 dbesc(datetime_convert()),
 388                                                 dbesc($item_id),
 389                                                 intval($importer['importer_uid'])
 390                                         );
 391                                 }
 392                                 continue;
 393                         }
 394
 395
 396                         $datarray = get_atom_elements($feed,$item);
 397                         $datarray['parent-uri'] = $item_id;
 398                         $datarray['uid'] = $importer['importer_uid'];
 399                         $datarray['contact-id'] = $importer['id'];
 400                         $r = item_store($datarray);
 401                         continue;
 402                 }
 403         }
 404
 405         xml_status(0);
 406         // NOTREACHED
 407
 408 }
 409
 410
 411 function dfrn_notify_content(&$a) {
 412
 413         if(x($_GET,'dfrn_id')) {
 414
 415                 // initial communication from external contact, $direction is their direction.
 416                 // If this is a duplex communication, ours will be the opposite.
 417
 418                 $dfrn_id = notags(trim($_GET['dfrn_id']));
 419                 $dfrn_version = (float) $_GET['dfrn_version'];
 420
 421                 logger('dfrn_notify: new notification dfrn_id=' . $dfrn_id);
 422
 423                 $direction = (-1);
 424                 if(strpos($dfrn_id,':') == 1) {
 425                         $direction = intval(substr($dfrn_id,0,1));
 426                         $dfrn_id = substr($dfrn_id,2);
 427                 }
 428
 429                 $hash = random_string();
 430
 431                 $status = 0;
 432
 433                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 434
 435                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 436                         VALUES( '%s', '%s', '%s') ",
 437                         dbesc($hash),
 438                         dbesc($dfrn_id),
 439                         intval(time() + 60 )
 440                 );
 441
 442
 443                 $sql_extra = '';
 444                 switch($direction) {
 445                         case (-1):
 446                                 $sql_extra = sprintf(" AND ( `issued-id` = '%s' OR `dfrn-id` = '%s' ) ", dbesc($dfrn_id), dbesc($dfrn_id));
 447                                 $my_id = $dfrn_id;
 448                                 break;
 449                         case 0:
 450                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 451                                 $my_id = '1:' . $dfrn_id;
 452                                 break;
 453                         case 1:
 454                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 455                                 $my_id = '0:' . $dfrn_id;
 456                                 break;
 457                         default:
 458                                 $status = 1;
 459                                 break; // NOTREACHED
 460                 }
 461
 462                 $r = q("SELECT `contact`.*, `user`.`nickname` FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
 463                                 WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 AND `user`.`nickname` = '%s' $sql_extra LIMIT 1",
 464                                 dbesc($a->argv[1])
 465                 );
 466
 467                 if(! count($r))
 468                         $status = 1;
 469
 470                 $challenge = '';
 471                 $encrypted_id = '';
 472                 $id_str = $my_id . '.' . mt_rand(1000,9999);
 473
 474                 if((($r[0]['duplex']) && strlen($r[0]['pubkey'])) || (! strlen($r[0]['prvkey']))) {
 475                         openssl_public_encrypt($hash,$challenge,$r[0]['pubkey']);
 476                         openssl_public_encrypt($id_str,$encrypted_id,$r[0]['pubkey']);
 477                 }
 478                 else {
 479                         openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 480                         openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
 481                 }
 482
 483                 $challenge    = bin2hex($challenge);
 484                 $encrypted_id = bin2hex($encrypted_id);
 485
 486                 $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
 487
 488                 $rino_enable = get_config('system','rino_encrypt');
 489
 490                 if(! $rino_enable)
 491                         $rino = 0;
 492
 493
 494                 header("Content-type: text/xml");
 495
 496                 echo '<?xml version="1.0" encoding="UTF-8"?>' . "\r\n"
 497                         . '<dfrn_notify>' . "\r\n"
 498                         . "\t" . '<status>' . $status . '</status>' . "\r\n"
 499                         . "\t" . '<dfrn_version>' . DFRN_PROTOCOL_VERSION . '</dfrn_version>' . "\r\n"
 500                         . "\t" . '<rino>' . $rino . '</rino>' . "\r\n"
 501                         . "\t" . '<dfrn_id>' . $encrypted_id . '</dfrn_id>' . "\r\n"
 502                         . "\t" . '<challenge>' . $challenge . '</challenge>' . "\r\n"
 503                         . '</dfrn_notify>' . "\r\n" ;
 504
 505                 killme();
 506         }
 507
 508 }