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         $perm         = ((x($_POST,'perm'))         ? notags(trim($_POST['perm']))      : 'r');
  14
  15         $writable = (-1);
  16         if($dfrn_version >= 2.21) {
  17                 $writable = (($perm === 'rw') ? 1 : 0);
  18         }
  19
  20         $direction = (-1);
  21         if(strpos($dfrn_id,':') == 1) {
  22                 $direction = intval(substr($dfrn_id,0,1));
  23                 $dfrn_id = substr($dfrn_id,2);
  24         }
  25
  26         $r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
  27                 dbesc($dfrn_id),
  28                 dbesc($challenge)
  29         );
  30         if(! count($r)) {
  31                 logger('dfrn_notify: could not match challenge to dfrn_id ' . $dfrn_id . ' challenge=' . $challenge);
  32                 xml_status(3);
  33         }
  34
  35         $r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
  36                 dbesc($dfrn_id),
  37                 dbesc($challenge)
  38         );
  39
  40         // find the local user who owns this relationship.
  41
  42         $sql_extra = '';
  43         switch($direction) {
  44                 case (-1):
  45                         $sql_extra = sprintf(" AND ( `issued-id` = '%s' OR `dfrn-id` = '%s' ) ", dbesc($dfrn_id), dbesc($dfrn_id));
  46                         break;
  47                 case 0:
  48                         $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  49                         break;
  50                 case 1:
  51                         $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  52                         break;
  53                 default:
  54                         xml_status(3);
  55                         break; // NOTREACHED
  56         }
  57
  58
  59         $r = q("SELECT  `contact`.*, `contact`.`uid` AS `importer_uid`,
  60                                         `contact`.`pubkey` AS `cpubkey`,
  61                                         `contact`.`prvkey` AS `cprvkey`,
  62                                         `contact`.`thumb` AS `thumb`,
  63                                         `contact`.`url` as `url`,
  64                                         `contact`.`name` as `senderName`,
  65                                         `user`.*
  66                         FROM `contact`
  67                         LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
  68                         WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0
  69                                 AND `user`.`nickname` = '%s' $sql_extra LIMIT 1",
  70                 dbesc($a->argv[1])
  71         );
  72
  73         if(! count($r)) {
  74                 logger('dfrn_notify: contact not found for dfrn_id ' . $dfrn_id);
  75                 xml_status(3);
  76                 //NOTREACHED
  77         }
  78
  79         // $importer in this case contains the contact record for the remote contact joined with the user record of our user.
  80
  81         $importer = $r[0];
  82
  83         logger('dfrn_notify: received notify from ' . $importer['name'] . ' for ' . $importer['username']);
  84         logger('dfrn_notify: data: ' . $data, LOGGER_DATA);
  85
  86         if($dissolve == 1) {
  87
  88                 /**
  89                  * Relationship is dissolved permanently
  90                  */
  91
  92                 require_once('include/Contact.php');
  93                 contact_remove($importer['id']);
  94                 logger('relationship dissolved : ' . $importer['name'] . ' dissolved ' . $importer['username']);
  95                 xml_status(0);
  96
  97         }
  98
  99         if(strlen($key)) {
 100                 $rawkey = hex2bin(trim($key));
 101                 logger('rino: md5 raw key: ' . md5($rawkey));
 102                 $final_key = '';
 103
 104                 if($dfrn_version >= 2.1) {
 105                         if((($importer['duplex']) && strlen($importer['cprvkey'])) || (! strlen($importer['cpubkey']))) {
 106                                 openssl_private_decrypt($rawkey,$final_key,$importer['cprvkey']);
 107                         }
 108                         else {
 109                                 openssl_public_decrypt($rawkey,$final_key,$importer['cpubkey']);
 110                         }
 111                 }
 112                 else {
 113                         if((($importer['duplex']) && strlen($importer['cpubkey'])) || (! strlen($importer['cprvkey']))) {
 114                                 openssl_public_decrypt($rawkey,$final_key,$importer['cpubkey']);
 115                         }
 116                         else {
 117                                 openssl_private_decrypt($rawkey,$final_key,$importer['cprvkey']);
 118                         }
 119                 }
 120
 121                 logger('rino: received key : ' . $final_key);
 122                 $data = aes_decrypt(hex2bin($data),$final_key);
 123                 logger('rino: decrypted data: ' . $data, LOGGER_DATA);
 124         }
 125
 126
 127
 128
 129         if($importer['readonly']) {
 130                 // We aren't receiving stuff from this person. But we will quietly ignore them
 131                 // rather than a blatant "go away" message.
 132                 logger('dfrn_notify: ignoring');
 133                 xml_status(0);
 134                 //NOTREACHED
 135         }
 136
 137         // Consume notification feed. This may differ from consuming a public feed in several ways
 138         // - might contain email
 139         // - might contain remote followup to our message
 140         //              - in which case we need to accept it and then notify other conversants
 141         // - we may need to send various email notifications
 142
 143         $feed = new SimplePie();
 144         $feed->set_raw_data($data);
 145         $feed->enable_order_by_date(false);
 146         $feed->init();
 147
 148         $ismail = false;
 149
 150         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
 151         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
 152
 153                 logger('dfrn_notify: private message received');
 154
 155                 $ismail = true;
 156                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
 157
 158                 $msg = array();
 159                 $msg['uid'] = $importer['importer_uid'];
 160                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
 161                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
 162                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
 163                 $msg['contact-id'] = $importer['id'];
 164                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
 165                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
 166                 $msg['seen'] = 0;
 167                 $msg['replied'] = 0;
 168                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
 169                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
 170                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
 171
 172                 dbesc_array($msg);
 173
 174                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
 175                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
 176
 177                 // send email notification if requested.
 178
 179                 require_once('bbcode.php');
 180                 if($importer['notify-flags'] & NOTIFY_MAIL) {
 181
 182                         // name of the automated email sender
 183                         $msg['notificationfromname']    = t('Administrator');
 184                         // noreply address to send from
 185                         $msg['notificationfromemail']   = t('noreply') . '@' . $a->get_hostname();
 186
 187                         // text version
 188                         // process the message body to display properly in text mode
 189                         //              1) substitute a \n character for the "\" then "n", so it behaves properly (it doesn't come in as a \n character)
 190                         //              2) remove escape slashes
 191                         //              3) decode any bbcode from the message editor
 192                         //              4) decode any encoded html tags
 193                         //              5) remove html tags
 194                         $msg['textversion']
 195                                 = strip_tags(html_entity_decode(bbcode(stripslashes(str_replace(array("\\r\\n", "\\r", "\\n"), "\n",$msg['body']))),ENT_QUOTES,'UTF-8'));
 196
 197                         // html version
 198                         // process the message body to display properly in text mode
 199                         //              1) substitute a <br /> tag for the "\" then "n", so it behaves properly (it doesn't come in as a \n character)
 200                         //              2) remove escape slashes
 201                         //              3) decode any bbcode from the message editor
 202                         //              4) decode any encoded html tags
 203                         $msg['htmlversion']
 204                                 = html_entity_decode(bbcode(stripslashes(str_replace(array("\\r\\n", "\\r","\\n\\n" ,"\\n"), "<br />\n",$msg['body']))));
 205
 206                         // load the template for private message notifications
 207                         $tpl = load_view_file('view/mail_received_html_body_eml.tpl');
 208                         $email_html_body_tpl = replace_macros($tpl,array(
 209                                 '$siteName'             => $a->config['sitename'],                              // name of this site
 210                                 '$siteurl'              => $a->get_baseurl(),                                   // descriptive url of this site
 211                                 '$thumb'                => $importer['thumb'],                                  // thumbnail url for sender icon
 212                                 '$email'                => $importer['email'],                                  // email address to send to
 213                                 '$url'                  => $importer['url'],                                    // full url for the site
 214                                 '$from'                 => $msg['from-name'],                                   // name of the person sending the message
 215                                 '$title'                => stripslashes($msg['title']),                 // subject of the message
 216                                 '$htmlversion'  => $msg['htmlversion'],                                 // html version of the message
 217                                 '$mimeboundary' => $msg['mimeboundary'],                                // mime message divider
 218                                 '$hostname'             => $a->get_hostname()                                   // name of this host
 219                         ));
 220
 221                         // load the template for private message notifications
 222                         $tpl = load_view_file('view/mail_received_text_body_eml.tpl');
 223                         $email_text_body_tpl = replace_macros($tpl,array(
 224                                 '$siteName'             => $a->config['sitename'],                              // name of this site
 225                                 '$siteurl'              => $a->get_baseurl(),                                   // descriptive url of this site
 226                                 '$thumb'                => $importer['thumb'],                                  // thumbnail url for sender icon
 227                                 '$email'                => $importer['email'],                                  // email address to send to
 228                                 '$url'                  => $importer['url'],                                    // full url for the site
 229                                 '$from'                 => $msg['from-name'],                                   // name of the person sending the message
 230                                 '$title'                => stripslashes($msg['title']),                 // subject of the message
 231                                 '$textversion'  => $msg['textversion'],                                 // text version of the message
 232                                 '$mimeboundary' => $msg['mimeboundary'],                                // mime message divider
 233                                 '$hostname'             => $a->get_hostname()                                   // name of this host
 234                         ));
 235
 236                         // use the EmailNotification library to send the message
 237                         require_once("include/EmailNotification.php");
 238                         EmailNotification::sendTextHtmlEmail(
 239                                 $msg['notificationfromname'],
 240                                 $msg['notificationfromemail'],
 241                                 $msg['notificationfromemail'],
 242                                 $importer['email'],
 243                                 t('New mail received at ') . $a->config['sitename'],
 244                                 $email_html_body_tpl,
 245                                 $email_text_body_tpl
 246                         );
 247                 }
 248                 xml_status(0);
 249                 // NOTREACHED
 250         }
 251
 252         logger('dfrn_notify: feed item count = ' . $feed->get_item_quantity());
 253
 254         // process any deleted entries
 255
 256         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
 257         if(is_array($del_entries) && count($del_entries)) {
 258                 foreach($del_entries as $dentry) {
 259                         $deleted = false;
 260                         if(isset($dentry['attribs']['']['ref'])) {
 261                                 $uri = $dentry['attribs']['']['ref'];
 262                                 $deleted = true;
 263                                 if(isset($dentry['attribs']['']['when'])) {
 264                                         $when = $dentry['attribs']['']['when'];
 265                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
 266                                 }
 267                                 else
 268                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
 269                         }
 270                         if($deleted) {
 271
 272                                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `contact-id` = %d LIMIT 1",
 273                                         dbesc($uri),
 274                                         intval($importer['importer_uid']),
 275                                         intval($importer['id'])
 276                                 );
 277
 278                                 if(count($r)) {
 279                                         $item = $r[0];
 280
 281                                         if(! $item['deleted'])
 282                                                 logger('dfrn_notify: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
 283
 284                                         if($item['uri'] == $item['parent-uri']) {
 285                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
 286                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
 287                                                         dbesc($when),
 288                                                         dbesc(datetime_convert()),
 289                                                         dbesc($item['uri']),
 290                                                         intval($importer['importer_uid'])
 291                                                 );
 292                                         }
 293                                         else {
 294                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
 295                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 296                                                         dbesc($when),
 297                                                         dbesc(datetime_convert()),
 298                                                         dbesc($uri),
 299                                                         intval($importer['importer_uid'])
 300                                                 );
 301                                                 if($item['last-child']) {
 302                                                         // ensure that last-child is set in case the comment that had it just got wiped.
 303                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
 304                                                                 dbesc(datetime_convert()),
 305                                                                 dbesc($item['parent-uri']),
 306                                                                 intval($item['uid'])
 307                                                         );
 308                                                         // who is the last child now?
 309                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
 310                                                                 ORDER BY `created` DESC LIMIT 1",
 311                                                                         dbesc($item['parent-uri']),
 312                                                                         intval($importer['importer_uid'])
 313                                                         );
 314                                                         if(count($r)) {
 315                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
 316                                                                         intval($r[0]['id'])
 317                                                                 );
 318                                                         }
 319                                                 }
 320                                         }
 321                                 }
 322                         }
 323                 }
 324         }
 325
 326
 327         foreach($feed->get_items() as $item) {
 328
 329                 $is_reply = false;
 330                 $item_id = $item->get_id();
 331                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
 332                 if(isset($rawthread[0]['attribs']['']['ref'])) {
 333                         $is_reply = true;
 334                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
 335                 }
 336
 337                 if($is_reply) {
 338                         if($feed->get_item_quantity() == 1) {
 339                                 logger('dfrn_notify: received remote comment');
 340                                 $is_like = false;
 341                                 // remote reply to our post. Import and then notify everybody else.
 342                                 $datarray = get_atom_elements($feed,$item);
 343                                 $datarray['type'] = 'remote-comment';
 344                                 $datarray['wall'] = 1;
 345                                 $datarray['parent-uri'] = $parent_uri;
 346                                 $datarray['uid'] = $importer['importer_uid'];
 347                                 $datarray['contact-id'] = $importer['id'];
 348                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
 349                                         $is_like = true;
 350                                         $datarray['type'] = 'activity';
 351                                         $datarray['gravity'] = GRAVITY_LIKE;
 352                                         $datarray['last-child'] = 0;
 353                                 }
 354                                 $posted_id = item_store($datarray);
 355                                 $parent = 0;
 356
 357                                 if($posted_id) {
 358                                         $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 359                                                 intval($posted_id),
 360                                                 intval($importer['importer_uid'])
 361                                         );
 362                                         if(count($r))
 363                                                 $parent = $r[0]['parent'];
 364
 365                                         if(! $is_like) {
 366                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
 367                                                         dbesc(datetime_convert()),
 368                                                         intval($importer['importer_uid']),
 369                                                         intval($r[0]['parent'])
 370                                                 );
 371
 372                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
 373                                                         dbesc(datetime_convert()),
 374                                                         intval($importer['importer_uid']),
 375                                                         intval($posted_id)
 376                                                 );
 377                                         }
 378
 379                                         if($posted_id && $parent) {
 380
 381                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
 382
 383                                                 if((! $is_like) && ($importer['notify-flags'] & NOTIFY_COMMENT) && (! $importer['self'])) {
 384                                                         require_once('bbcode.php');
 385                                                         $from = stripslashes($datarray['author-name']);
 386                                                         $tpl = load_view_file('view/cmnt_received_eml.tpl');
 387                                                         $email_tpl = replace_macros($tpl, array(
 388                                                                 '$sitename' => $a->config['sitename'],
 389                                                                 '$siteurl' =>  $a->get_baseurl(),
 390                                                                 '$username' => $importer['username'],
 391                                                                 '$email' => $importer['email'],
 392                                                                 '$display' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $posted_id,
 393                                                                 '$from' => $from,
 394                                                                 '$body' => html_entity_decode(strip_tags(bbcode(stripslashes($datarray['body']))), ENT_QUOTES, 'UTF-8')
 395                                                         ));
 396
 397                                                         $res = mail($importer['email'], sprintf(t('%s commented on an item at %s'), $from , $a->config['sitename']),
 398                                                                 $email_tpl, "From: " . t('Administrator') . '@' . $a->get_hostname() );
 399                                                 }
 400                                         }
 401                                         xml_status(0);
 402                                         // NOTREACHED
 403                                 }
 404                         }
 405                         else {
 406
 407                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
 408
 409                                 $item_id  = $item->get_id();
 410                                 $datarray = get_atom_elements($feed,$item);
 411
 412                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 413                                         dbesc($item_id),
 414                                         intval($importer['importer_uid'])
 415                                 );
 416
 417                                 // Update content if 'updated' changes
 418
 419                                 if(count($r)) {
 420                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
 421                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 422                                                         dbesc($datarray['body']),
 423                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
 424                                                         dbesc($item_id),
 425                                                         intval($importer['importer_uid'])
 426                                                 );
 427                                         }
 428
 429                                         // update last-child if it changes
 430
 431                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
 432                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
 433                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
 434                                                         dbesc(datetime_convert()),
 435                                                         dbesc($parent_uri),
 436                                                         intval($importer['importer_uid'])
 437                                                 );
 438                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 439                                                         intval($allow[0]['data']),
 440                                                         dbesc(datetime_convert()),
 441                                                         dbesc($item_id),
 442                                                         intval($importer['importer_uid'])
 443                                                 );
 444                                         }
 445                                         continue;
 446                                 }
 447
 448                                 $datarray['parent-uri'] = $parent_uri;
 449                                 $datarray['uid'] = $importer['importer_uid'];
 450                                 $datarray['contact-id'] = $importer['id'];
 451                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
 452                                         $datarray['type'] = 'activity';
 453                                         $datarray['gravity'] = GRAVITY_LIKE;
 454                                 }
 455                                 $r = item_store($datarray);
 456
 457                                 // find out if our user is involved in this conversation and wants to be notified.
 458
 459                                 if(($datarray['type'] != 'activity') && ($importer['notify-flags'] & NOTIFY_COMMENT)) {
 460
 461                                         $myconv = q("SELECT `author-link` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 ",
 462                                                 dbesc($parent_uri),
 463                                                 intval($importer['importer_uid'])
 464                                         );
 465                                         if(count($myconv)) {
 466                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
 467                                                 foreach($myconv as $conv) {
 468                                                         if(! link_compare($conv['author-link'],$importer_url))
 469                                                                 continue;
 470                                                         require_once('bbcode.php');
 471                                                         $from = stripslashes($datarray['author-name']);
 472                                                         $tpl = load_view_file('view/cmnt_received_eml.tpl');
 473                                                         $email_tpl = replace_macros($tpl, array(
 474                                                                 '$sitename' => $a->config['sitename'],
 475                                                                 '$siteurl' =>  $a->get_baseurl(),
 476                                                                 '$username' => $importer['username'],
 477                                                                 '$email' => $importer['email'],
 478                                                                 '$from' => $from,
 479                                                                 '$display' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $r,
 480                                                                 '$body' => html_entity_decode(strip_tags(bbcode(stripslashes($datarray['body']))), ENT_QUOTES, 'UTF-8')
 481                                                         ));
 482
 483                                                         $res = mail($importer['email'], sprintf( t("%s commented on an item at %s") , $from ,$a->config['sitename']),
 484                                                                 $email_tpl, "From: ".t("Administrator") . "@". $a->get_hostname() );
 485                                                         break;
 486                                                 }
 487                                         }
 488                                 }
 489                                 continue;
 490                         }
 491                 }
 492
 493                 else {
 494
 495                         // Head post of a conversation. Have we seen it? If not, import it.
 496
 497
 498                         $item_id  = $item->get_id();
 499                         $datarray = get_atom_elements($feed,$item);
 500
 501                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 502                                 dbesc($item_id),
 503                                 intval($importer['importer_uid'])
 504                         );
 505
 506                         // Update content if 'updated' changes
 507
 508                         if(count($r)) {
 509                                 if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
 510                                         $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 511                                                 dbesc($datarray['body']),
 512                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
 513                                                 dbesc($item_id),
 514                                                 intval($importer['importer_uid'])
 515                                         );
 516                                 }
 517
 518                                 // update last-child if it changes
 519
 520                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
 521                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 522                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 523                                                 intval($allow[0]['data']),
 524                                                 dbesc(datetime_convert()),
 525                                                 dbesc($item_id),
 526                                                 intval($importer['importer_uid'])
 527                                         );
 528                                 }
 529                                 continue;
 530                         }
 531
 532                         $datarray['parent-uri'] = $item_id;
 533                         $datarray['uid'] = $importer['importer_uid'];
 534                         $datarray['contact-id'] = $importer['id'];
 535                         $r = item_store($datarray);
 536                         continue;
 537                 }
 538         }
 539
 540         xml_status(0);
 541         // NOTREACHED
 542
 543 }
 544
 545
 546 function dfrn_notify_content(&$a) {
 547
 548         if(x($_GET,'dfrn_id')) {
 549
 550                 // initial communication from external contact, $direction is their direction.
 551                 // If this is a duplex communication, ours will be the opposite.
 552
 553                 $dfrn_id = notags(trim($_GET['dfrn_id']));
 554                 $dfrn_version = (float) $_GET['dfrn_version'];
 555
 556                 logger('dfrn_notify: new notification dfrn_id=' . $dfrn_id);
 557
 558                 $direction = (-1);
 559                 if(strpos($dfrn_id,':') == 1) {
 560                         $direction = intval(substr($dfrn_id,0,1));
 561                         $dfrn_id = substr($dfrn_id,2);
 562                 }
 563
 564                 $hash = random_string();
 565
 566                 $status = 0;
 567
 568                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 569
 570                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 571                         VALUES( '%s', '%s', %d ) ",
 572                         dbesc($hash),
 573                         dbesc($dfrn_id),
 574                         intval(time() + 90 )
 575                 );
 576
 577                 logger('dfrn_notify: challenge=' . $hash );
 578
 579                 $sql_extra = '';
 580                 switch($direction) {
 581                         case (-1):
 582                                 $sql_extra = sprintf(" AND ( `issued-id` = '%s' OR `dfrn-id` = '%s' ) ", dbesc($dfrn_id), dbesc($dfrn_id));
 583                                 $my_id = $dfrn_id;
 584                                 break;
 585                         case 0:
 586                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 587                                 $my_id = '1:' . $dfrn_id;
 588                                 break;
 589                         case 1:
 590                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 591                                 $my_id = '0:' . $dfrn_id;
 592                                 break;
 593                         default:
 594                                 $status = 1;
 595                                 break; // NOTREACHED
 596                 }
 597
 598                 $r = q("SELECT `contact`.*, `user`.`nickname` FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
 599                                 WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 AND `user`.`nickname` = '%s' $sql_extra LIMIT 1",
 600                                 dbesc($a->argv[1])
 601                 );
 602
 603                 if(! count($r))
 604                         $status = 1;
 605
 606                 $challenge = '';
 607                 $encrypted_id = '';
 608                 $id_str = $my_id . '.' . mt_rand(1000,9999);
 609
 610                 if((($r[0]['duplex']) && strlen($r[0]['prvkey'])) || (! strlen($r[0]['pubkey']))) {
 611                         openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 612                         openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
 613                 }
 614                 else {
 615                         openssl_public_encrypt($hash,$challenge,$r[0]['pubkey']);
 616                         openssl_public_encrypt($id_str,$encrypted_id,$r[0]['pubkey']);
 617                 }
 618
 619                 $challenge    = bin2hex($challenge);
 620                 $encrypted_id = bin2hex($encrypted_id);
 621
 622                 $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
 623
 624                 $rino_enable = get_config('system','rino_encrypt');
 625
 626                 if(! $rino_enable)
 627                         $rino = 0;
 628
 629
 630                 header("Content-type: text/xml");
 631
 632                 echo '<?xml version="1.0" encoding="UTF-8"?>' . "\r\n"
 633                         . '<dfrn_notify>' . "\r\n"
 634                         . "\t" . '<status>' . $status . '</status>' . "\r\n"
 635                         . "\t" . '<dfrn_version>' . DFRN_PROTOCOL_VERSION . '</dfrn_version>' . "\r\n"
 636                         . "\t" . '<rino>' . $rino . '</rino>' . "\r\n"
 637                         . "\t" . '<dfrn_id>' . $encrypted_id . '</dfrn_id>' . "\r\n"
 638                         . "\t" . '<challenge>' . $challenge . '</challenge>' . "\r\n"
 639                         . '</dfrn_notify>' . "\r\n" ;
 640
 641                 killme();
 642         }
 643
 644 }