mod/dfrn_notify.php

   1 <?php
   2
   3 require_once('simplepie/simplepie.inc');
   4 require_once('include/items.php');
   5 function dfrn_notify_post(&$a) {
   6
   7         $dfrn_id      = ((x($_POST,'dfrn_id'))      ? notags(trim($_POST['dfrn_id']))   : '');
   8         $dfrn_version = ((x($_POST,'dfrn_version')) ? (float) $_POST['dfrn_version']    : 2.0);
   9         $challenge    = ((x($_POST,'challenge'))    ? notags(trim($_POST['challenge'])) : '');
  10         $data         = ((x($_POST,'data'))         ? $_POST['data']                    : '');
  11         $key          = ((x($_POST,'key'))          ? $_POST['key']                     : '');
  12         $dissolve     = ((x($_POST,'dissolve'))     ? intval($_POST['dissolve'])        :  0);
  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 . ' challenge=' . $challenge);
  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`,
  54                                         `contact`.`pubkey` AS `cpubkey`,
  55                                         `contact`.`prvkey` AS `cprvkey`,
  56                                         `contact`.`thumb` AS `thumb`,
  57                                         `contact`.`url` as `url`,
  58                                         `contact`.`name` as `senderName`,
  59                                         `user`.*
  60                         FROM `contact`
  61                         LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
  62                         WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0
  63                                 AND `user`.`nickname` = '%s' $sql_extra LIMIT 1",
  64                 dbesc($a->argv[1])
  65         );
  66
  67         if(! count($r)) {
  68                 logger('dfrn_notify: contact not found for dfrn_id ' . $dfrn_id);
  69                 xml_status(3);
  70                 //NOTREACHED
  71         }
  72
  73         // $importer in this case contains the contact record for the remote contact joined with the user record of our user.
  74
  75         $importer = $r[0];
  76
  77         logger('dfrn_notify: received notify from ' . $importer['name'] . ' for ' . $importer['username']);
  78         logger('dfrn_notify: data: ' . $data, LOGGER_DATA);
  79
  80         if($dissolve == 1) {
  81
  82                 /**
  83                  * Relationship is dissolved permanently
  84                  */
  85
  86                 require_once('include/Contact.php');
  87                 contact_remove($importer['id']);
  88                 logger('relationship dissolved : ' . $importer['name'] . ' dissolved ' . $importer['username']);
  89                 xml_status(0);
  90
  91         }
  92
  93         if(strlen($key)) {
  94                 $rawkey = hex2bin(trim($key));
  95                 logger('rino: md5 raw key: ' . md5($rawkey));
  96                 $final_key = '';
  97
  98                 if($dfrn_version >= 2.1) {
  99                         if((($importer['duplex']) && strlen($importer['cprvkey'])) || (! strlen($importer['cpubkey']))) {
 100                                 openssl_private_decrypt($rawkey,$final_key,$importer['cprvkey']);
 101                         }
 102                         else {
 103                                 openssl_public_decrypt($rawkey,$final_key,$importer['cpubkey']);
 104                         }
 105                 }
 106                 else {
 107                         if((($importer['duplex']) && strlen($importer['cpubkey'])) || (! strlen($importer['cprvkey']))) {
 108                                 openssl_public_decrypt($rawkey,$final_key,$importer['cpubkey']);
 109                         }
 110                         else {
 111                                 openssl_private_decrypt($rawkey,$final_key,$importer['cprvkey']);
 112                         }
 113                 }
 114
 115                 logger('rino: received key : ' . $final_key);
 116                 $data = aes_decrypt(hex2bin($data),$final_key);
 117                 logger('rino: decrypted data: ' . $data, LOGGER_DATA);
 118         }
 119
 120
 121
 122
 123         if($importer['readonly']) {
 124                 // We aren't receiving stuff from this person. But we will quietly ignore them
 125                 // rather than a blatant "go away" message.
 126                 logger('dfrn_notify: ignoring');
 127                 xml_status(0);
 128                 //NOTREACHED
 129         }
 130
 131         // Consume notification feed. This may differ from consuming a public feed in several ways
 132         // - might contain email
 133         // - might contain remote followup to our message
 134         //              - in which case we need to accept it and then notify other conversants
 135         // - we may need to send various email notifications
 136
 137         $feed = new SimplePie();
 138         $feed->set_raw_data($data);
 139         $feed->enable_order_by_date(false);
 140         $feed->init();
 141
 142         $ismail = false;
 143
 144         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
 145         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
 146
 147                 logger('dfrn_notify: private message received');
 148
 149                 $ismail = true;
 150                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
 151
 152                 $msg = array();
 153                 $msg['uid'] = $importer['importer_uid'];
 154                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
 155                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
 156                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
 157                 $msg['contact-id'] = $importer['id'];
 158                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
 159                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
 160                 $msg['seen'] = 0;
 161                 $msg['replied'] = 0;
 162                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
 163                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
 164                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
 165
 166                 dbesc_array($msg);
 167
 168                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
 169                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
 170
 171                 // send email notification if requested.
 172
 173                 require_once('bbcode.php');
 174                 if($importer['notify-flags'] & NOTIFY_MAIL) {
 175
 176                         // name of the automated email sender
 177                         $msg['notificationfromname']    = t('Administrator');
 178                         // noreply address to send from
 179                         $msg['notificationfromemail']   = t('noreply') . '@' . $a->get_hostname();
 180
 181                         // text version
 182                         // process the message body to display properly in text mode
 183                         //              1) substitute a \n character for the "\" then "n", so it behaves properly (it doesn't come in as a \n character)
 184                         //              2) remove escape slashes
 185                         //              3) decode any bbcode from the message editor
 186                         //              4) decode any encoded html tags
 187                         //              5) remove html tags
 188                         $msg['textversion']
 189                                 = strip_tags(html_entity_decode(bbcode(stripslashes(str_replace(array("\\r\\n", "\\r", "\\n"), "\n",$msg['body']))),ENT_QUOTES,'UTF-8'));
 190
 191                         // html version
 192                         // process the message body to display properly in text mode
 193                         //              1) substitute a <br /> tag for the "\" then "n", so it behaves properly (it doesn't come in as a \n character)
 194                         //              2) remove escape slashes
 195                         //              3) decode any bbcode from the message editor
 196                         //              4) decode any encoded html tags
 197                         $msg['htmlversion']
 198                                 = html_entity_decode(bbcode(stripslashes(str_replace(array("\\r\\n", "\\r","\\n\\n" ,"\\n"), "<br />\n",$msg['body']))));
 199
 200                         // load the template for private message notifications
 201                         $tpl = load_view_file('view/mail_received_html_body_eml.tpl');
 202                         $email_html_body_tpl = replace_macros($tpl,array(
 203                                 '$siteName'             => $a->config['sitename'],                              // name of this site
 204                                 '$siteurl'              => $a->get_baseurl(),                                   // descriptive url of this site
 205                                 '$thumb'                => $importer['thumb'],                                  // thumbnail url for sender icon
 206                                 '$email'                => $importer['email'],                                  // email address to send to
 207                                 '$url'                  => $importer['url'],                                    // full url for the site
 208                                 '$from'                 => $msg['from-name'],                                   // name of the person sending the message
 209                                 '$title'                => stripslashes($msg['title']),                 // subject of the message
 210                                 '$htmlversion'  => $msg['htmlversion'],                                 // html version of the message
 211                                 '$mimeboundary' => $msg['mimeboundary'],                                // mime message divider
 212                                 '$hostname'             => $a->get_hostname()                                   // name of this host
 213                         ));
 214
 215                         // load the template for private message notifications
 216                         $tpl = load_view_file('view/mail_received_text_body_eml.tpl');
 217                         $email_text_body_tpl = replace_macros($tpl,array(
 218                                 '$siteName'             => $a->config['sitename'],                              // name of this site
 219                                 '$siteurl'              => $a->get_baseurl(),                                   // descriptive url of this site
 220                                 '$thumb'                => $importer['thumb'],                                  // thumbnail url for sender icon
 221                                 '$email'                => $importer['email'],                                  // email address to send to
 222                                 '$url'                  => $importer['url'],                                    // full url for the site
 223                                 '$from'                 => $msg['from-name'],                                   // name of the person sending the message
 224                                 '$title'                => stripslashes($msg['title']),                 // subject of the message
 225                                 '$textversion'  => $msg['textversion'],                                 // text version of the message
 226                                 '$mimeboundary' => $msg['mimeboundary'],                                // mime message divider
 227                                 '$hostname'             => $a->get_hostname()                                   // name of this host
 228                         ));
 229
 230                         // use the EmailNotification library to send the message
 231                         require_once("include/EmailNotification.php");
 232                         EmailNotification::sendTextHtmlEmail(
 233                                 $msg['notificationfromname'],
 234                                 $msg['notificationfromemail'],
 235                                 $msg['notificationfromemail'],
 236                                 $importer['email'],
 237                                 t('New mail received at ') . $a->config['sitename'],
 238                                 $email_html_body_tpl,
 239                                 $email_text_body_tpl
 240                         );
 241                 }
 242                 xml_status(0);
 243                 // NOTREACHED
 244         }
 245
 246         logger('dfrn_notify: feed item count = ' . $feed->get_item_quantity());
 247
 248         // process any deleted entries
 249
 250         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
 251         if(is_array($del_entries) && count($del_entries)) {
 252                 foreach($del_entries as $dentry) {
 253                         $deleted = false;
 254                         if(isset($dentry['attribs']['']['ref'])) {
 255                                 $uri = $dentry['attribs']['']['ref'];
 256                                 $deleted = true;
 257                                 if(isset($dentry['attribs']['']['when'])) {
 258                                         $when = $dentry['attribs']['']['when'];
 259                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
 260                                 }
 261                                 else
 262                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
 263                         }
 264                         if($deleted) {
 265
 266                                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `contact-id` = %d LIMIT 1",
 267                                         dbesc($uri),
 268                                         intval($importer['importer_uid']),
 269                                         intval($importer['id'])
 270                                 );
 271
 272                                 if(count($r)) {
 273                                         $item = $r[0];
 274
 275                                         if(! $item['deleted'])
 276                                                 logger('dfrn_notify: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
 277
 278                                         if($item['uri'] == $item['parent-uri']) {
 279                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
 280                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
 281                                                         dbesc($when),
 282                                                         dbesc(datetime_convert()),
 283                                                         dbesc($item['uri']),
 284                                                         intval($importer['importer_uid'])
 285                                                 );
 286                                         }
 287                                         else {
 288                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
 289                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 290                                                         dbesc($when),
 291                                                         dbesc(datetime_convert()),
 292                                                         dbesc($uri),
 293                                                         intval($importer['importer_uid'])
 294                                                 );
 295                                                 if($item['last-child']) {
 296                                                         // ensure that last-child is set in case the comment that had it just got wiped.
 297                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
 298                                                                 dbesc(datetime_convert()),
 299                                                                 dbesc($item['parent-uri']),
 300                                                                 intval($item['uid'])
 301                                                         );
 302                                                         // who is the last child now?
 303                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
 304                                                                 ORDER BY `created` DESC LIMIT 1",
 305                                                                         dbesc($item['parent-uri']),
 306                                                                         intval($importer['importer_uid'])
 307                                                         );
 308                                                         if(count($r)) {
 309                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
 310                                                                         intval($r[0]['id'])
 311                                                                 );
 312                                                         }
 313                                                 }
 314                                         }
 315                                 }
 316                         }
 317                 }
 318         }
 319
 320
 321         foreach($feed->get_items() as $item) {
 322
 323                 $is_reply = false;
 324                 $item_id = $item->get_id();
 325                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
 326                 if(isset($rawthread[0]['attribs']['']['ref'])) {
 327                         $is_reply = true;
 328                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
 329                 }
 330
 331                 if($is_reply) {
 332                         if($feed->get_item_quantity() == 1) {
 333                                 logger('dfrn_notify: received remote comment');
 334                                 $is_like = false;
 335                                 // remote reply to our post. Import and then notify everybody else.
 336                                 $datarray = get_atom_elements($feed,$item);
 337                                 $datarray['type'] = 'remote-comment';
 338                                 $datarray['wall'] = 1;
 339                                 $datarray['parent-uri'] = $parent_uri;
 340                                 $datarray['uid'] = $importer['importer_uid'];
 341                                 $datarray['contact-id'] = $importer['id'];
 342                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
 343                                         $is_like = true;
 344                                         $datarray['type'] = 'activity';
 345                                         $datarray['gravity'] = GRAVITY_LIKE;
 346                                         $datarray['last-child'] = 0;
 347                                 }
 348                                 $posted_id = item_store($datarray);
 349                                 $parent = 0;
 350
 351                                 if($posted_id) {
 352                                         $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 353                                                 intval($posted_id),
 354                                                 intval($importer['importer_uid'])
 355                                         );
 356                                         if(count($r))
 357                                                 $parent = $r[0]['parent'];
 358
 359                                         if(! $is_like) {
 360                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
 361                                                         dbesc(datetime_convert()),
 362                                                         intval($importer['importer_uid']),
 363                                                         intval($r[0]['parent'])
 364                                                 );
 365
 366                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
 367                                                         dbesc(datetime_convert()),
 368                                                         intval($importer['importer_uid']),
 369                                                         intval($posted_id)
 370                                                 );
 371                                         }
 372
 373                                         if($posted_id && $parent) {
 374
 375                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
 376
 377                                                 if((! $is_like) && ($importer['notify-flags'] & NOTIFY_COMMENT) && (! $importer['self'])) {
 378                                                         require_once('bbcode.php');
 379                                                         $from = stripslashes($datarray['author-name']);
 380                                                         $tpl = load_view_file('view/cmnt_received_eml.tpl');
 381                                                         $email_tpl = replace_macros($tpl, array(
 382                                                                 '$sitename' => $a->config['sitename'],
 383                                                                 '$siteurl' =>  $a->get_baseurl(),
 384                                                                 '$username' => $importer['username'],
 385                                                                 '$email' => $importer['email'],
 386                                                                 '$display' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $posted_id,
 387                                                                 '$from' => $from,
 388                                                                 '$body' => html_entity_decode(strip_tags(bbcode(stripslashes($datarray['body']))), ENT_QUOTES, 'UTF-8')
 389                                                         ));
 390
 391                                                         $res = mail($importer['email'], sprintf(t('%s commented on an item at %s'), $from , $a->config['sitename']),
 392                                                                 $email_tpl, "From: " . t('Administrator') . '@' . $a->get_hostname() );
 393                                                 }
 394                                         }
 395                                         xml_status(0);
 396                                         // NOTREACHED
 397                                 }
 398                         }
 399                         else {
 400
 401                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
 402
 403                                 $item_id  = $item->get_id();
 404                                 $datarray = get_atom_elements($feed,$item);
 405
 406                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 407                                         dbesc($item_id),
 408                                         intval($importer['importer_uid'])
 409                                 );
 410
 411                                 // Update content if 'updated' changes
 412
 413                                 if(count($r)) {
 414                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
 415                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 416                                                         dbesc($datarray['body']),
 417                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
 418                                                         dbesc($item_id),
 419                                                         intval($importer['importer_uid'])
 420                                                 );
 421                                         }
 422
 423                                         // update last-child if it changes
 424
 425                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
 426                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
 427                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
 428                                                         dbesc(datetime_convert()),
 429                                                         dbesc($parent_uri),
 430                                                         intval($importer['importer_uid'])
 431                                                 );
 432                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 433                                                         intval($allow[0]['data']),
 434                                                         dbesc(datetime_convert()),
 435                                                         dbesc($item_id),
 436                                                         intval($importer['importer_uid'])
 437                                                 );
 438                                         }
 439                                         continue;
 440                                 }
 441
 442                                 $datarray['parent-uri'] = $parent_uri;
 443                                 $datarray['uid'] = $importer['importer_uid'];
 444                                 $datarray['contact-id'] = $importer['id'];
 445                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
 446                                         $datarray['type'] = 'activity';
 447                                         $datarray['gravity'] = GRAVITY_LIKE;
 448                                 }
 449                                 $r = item_store($datarray);
 450
 451                                 // find out if our user is involved in this conversation and wants to be notified.
 452
 453                                 if(($datarray['type'] != 'activity') && ($importer['notify-flags'] & NOTIFY_COMMENT)) {
 454
 455                                         $myconv = q("SELECT `author-link` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 ",
 456                                                 dbesc($parent_uri),
 457                                                 intval($importer['importer_uid'])
 458                                         );
 459                                         if(count($myconv)) {
 460                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
 461                                                 foreach($myconv as $conv) {
 462                                                         if(! link_compare($conv['author-link'],$importer_url))
 463                                                                 continue;
 464                                                         require_once('bbcode.php');
 465                                                         $from = stripslashes($datarray['author-name']);
 466                                                         $tpl = load_view_file('view/cmnt_received_eml.tpl');
 467                                                         $email_tpl = replace_macros($tpl, array(
 468                                                                 '$sitename' => $a->config['sitename'],
 469                                                                 '$siteurl' =>  $a->get_baseurl(),
 470                                                                 '$username' => $importer['username'],
 471                                                                 '$email' => $importer['email'],
 472                                                                 '$from' => $from,
 473                                                                 '$display' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $r,
 474                                                                 '$body' => html_entity_decode(strip_tags(bbcode(stripslashes($datarray['body']))), ENT_QUOTES, 'UTF-8')
 475                                                         ));
 476
 477                                                         $res = mail($importer['email'], sprintf( t("%s commented on an item at %s") , $from ,$a->config['sitename']),
 478                                                                 $email_tpl, "From: ".t("Administrator") . "@". $a->get_hostname() );
 479                                                         break;
 480                                                 }
 481                                         }
 482                                 }
 483                                 continue;
 484                         }
 485                 }
 486
 487                 else {
 488
 489                         // Head post of a conversation. Have we seen it? If not, import it.
 490
 491
 492                         $item_id  = $item->get_id();
 493                         $datarray = get_atom_elements($feed,$item);
 494
 495                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 496                                 dbesc($item_id),
 497                                 intval($importer['importer_uid'])
 498                         );
 499
 500                         // Update content if 'updated' changes
 501
 502                         if(count($r)) {
 503                                 if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
 504                                         $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 505                                                 dbesc($datarray['body']),
 506                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
 507                                                 dbesc($item_id),
 508                                                 intval($importer['importer_uid'])
 509                                         );
 510                                 }
 511
 512                                 // update last-child if it changes
 513
 514                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
 515                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 516                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 517                                                 intval($allow[0]['data']),
 518                                                 dbesc(datetime_convert()),
 519                                                 dbesc($item_id),
 520                                                 intval($importer['importer_uid'])
 521                                         );
 522                                 }
 523                                 continue;
 524                         }
 525
 526                         $datarray['parent-uri'] = $item_id;
 527                         $datarray['uid'] = $importer['importer_uid'];
 528                         $datarray['contact-id'] = $importer['id'];
 529                         $r = item_store($datarray);
 530                         continue;
 531                 }
 532         }
 533
 534         xml_status(0);
 535         // NOTREACHED
 536
 537 }
 538
 539
 540 function dfrn_notify_content(&$a) {
 541
 542         if(x($_GET,'dfrn_id')) {
 543
 544                 // initial communication from external contact, $direction is their direction.
 545                 // If this is a duplex communication, ours will be the opposite.
 546
 547                 $dfrn_id = notags(trim($_GET['dfrn_id']));
 548                 $dfrn_version = (float) $_GET['dfrn_version'];
 549
 550                 logger('dfrn_notify: new notification dfrn_id=' . $dfrn_id);
 551
 552                 $direction = (-1);
 553                 if(strpos($dfrn_id,':') == 1) {
 554                         $direction = intval(substr($dfrn_id,0,1));
 555                         $dfrn_id = substr($dfrn_id,2);
 556                 }
 557
 558                 $hash = random_string();
 559
 560                 $status = 0;
 561
 562                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 563
 564                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 565                         VALUES( '%s', '%s', %d ) ",
 566                         dbesc($hash),
 567                         dbesc($dfrn_id),
 568                         intval(time() + 90 )
 569                 );
 570
 571                 logger('dfrn_notify: challenge=' . $hash );
 572
 573                 $sql_extra = '';
 574                 switch($direction) {
 575                         case (-1):
 576                                 $sql_extra = sprintf(" AND ( `issued-id` = '%s' OR `dfrn-id` = '%s' ) ", dbesc($dfrn_id), dbesc($dfrn_id));
 577                                 $my_id = $dfrn_id;
 578                                 break;
 579                         case 0:
 580                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 581                                 $my_id = '1:' . $dfrn_id;
 582                                 break;
 583                         case 1:
 584                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 585                                 $my_id = '0:' . $dfrn_id;
 586                                 break;
 587                         default:
 588                                 $status = 1;
 589                                 break; // NOTREACHED
 590                 }
 591
 592                 $r = q("SELECT `contact`.*, `user`.`nickname` FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
 593                                 WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 AND `user`.`nickname` = '%s' $sql_extra LIMIT 1",
 594                                 dbesc($a->argv[1])
 595                 );
 596
 597                 if(! count($r))
 598                         $status = 1;
 599
 600                 $challenge = '';
 601                 $encrypted_id = '';
 602                 $id_str = $my_id . '.' . mt_rand(1000,9999);
 603
 604                 if((($r[0]['duplex']) && strlen($r[0]['prvkey'])) || (! strlen($r[0]['pubkey']))) {
 605                         openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 606                         openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
 607                 }
 608                 else {
 609                         openssl_public_encrypt($hash,$challenge,$r[0]['pubkey']);
 610                         openssl_public_encrypt($id_str,$encrypted_id,$r[0]['pubkey']);
 611                 }
 612
 613                 $challenge    = bin2hex($challenge);
 614                 $encrypted_id = bin2hex($encrypted_id);
 615
 616                 $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
 617
 618                 $rino_enable = get_config('system','rino_encrypt');
 619
 620                 if(! $rino_enable)
 621                         $rino = 0;
 622
 623
 624                 header("Content-type: text/xml");
 625
 626                 echo '<?xml version="1.0" encoding="UTF-8"?>' . "\r\n"
 627                         . '<dfrn_notify>' . "\r\n"
 628                         . "\t" . '<status>' . $status . '</status>' . "\r\n"
 629                         . "\t" . '<dfrn_version>' . DFRN_PROTOCOL_VERSION . '</dfrn_version>' . "\r\n"
 630                         . "\t" . '<rino>' . $rino . '</rino>' . "\r\n"
 631                         . "\t" . '<dfrn_id>' . $encrypted_id . '</dfrn_id>' . "\r\n"
 632                         . "\t" . '<challenge>' . $challenge . '</challenge>' . "\r\n"
 633                         . '</dfrn_notify>' . "\r\n" ;
 634
 635                 killme();
 636         }
 637
 638 }