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