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