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