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