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 //                      $body = html_entity_decode(strip_tags(bbcode(stripslashes(nl2br($msg['body'])))),ENT_QUOTES,'UTF-8');
 177 //                      $body = strip_tags(bbcode(stripslashes(nl2br($msg['body']))));
 178
 179                         /*if(function_exists('quoted_printable_encode'))
 180                                 $body = quoted_printable_encode($body);
 181                         else
 182                                 $body = qp($body);*/
 183
 184                         //$msg['body'] = str_replace(array("\\r\\n", "\\r", "\\n"), "<br />", $msg['body']);
 185                         //$msg['body'] = html_entity_decode(strip_tags(bbcode($msg['body'])));
 186                         $msg['mimeboundary']   =rand(0,9)."-"
 187                                 .rand(10000000000,9999999999)."-"
 188                                 .rand(10000000000,9999999999)."=:"
 189                                 .rand(10000,99999);
 190
 191                         $msg['notificationfromname']    = t('Administrator');
 192                         $msg['notificationfromemail']   = t('noreply') . '@' . $a->get_hostname();
 193                         $msg['headers'] =
 194                                 "From: {$msg['notificationfromname']} <{$msg['notificationfromemail']}>\n" .
 195                                 "Reply-To: {$msg['notificationfromemail']}\n" .
 196                                 "MIME-Version: 1.0\n" .
 197                                 "Content-Type: multipart/alternative; boundary=\"{$msg['mimeboundary']}\"";
 198
 199
 200                         $msg['textversion']
 201                                 = strip_tags(html_entity_decode(bbcode(stripslashes(str_replace(array("\\r\\n", "\\r", "\\n"), "\n",$msg['body']))),ENT_QUOTES,'UTF-8'));
 202                         //$TextMessage  = html_entity_decode(strip_tags(bbcode(str_replace(array("\\r\\n", "\\r", "\\n"), "\n",$msg['body']))));        ;
 203                         $msg['htmlversion']
 204                                 = html_entity_decode(bbcode(stripslashes(str_replace(array("\\r\\n", "\\r", "\\n"), "<br />\n",$msg['body']))));
 205
 206                         $tpl = load_view_file('view/mail_received_eml.tpl');
 207                         $email_tpl = replace_macros($tpl, array(
 208                                 '$siteName'             => $a->config['sitename'],
 209                                 '$siteurl'              => $a->get_baseurl(),
 210                                 '$username'             => $importer['username'],
 211                                 '$thumb'                => $importer['thumb'],
 212                                 '$email'                => $importer['email'],
 213                                 '$url'                  => $importer['url'],
 214                                 '$senderName'   => $importer['senderName'],
 215                                 '$from'                 => $msg['from-name'],
 216                                 '$title'                => stripslashes($msg['title']),
 217                                 '$textversion'  => $msg['textversion'],
 218                                 '$htmlversion'  => $msg['htmlversion'],
 219                                 '$mimeboundary' => $msg['mimeboundary'],
 220                                 '$hostname'             => $a->get_hostname()
 221                         ));
 222
 223                         logger("message headers: " . $msg['headers']);
 224                         logger("message body: " . $mail_tpl);
 225
 226
 227                         $res = mail($importer['email'], t('New mail received at ') . $a->config['sitename'],
 228                                 $email_tpl, $msg['headers']
 229                         /*              'From: ' . t('Administrator') . '@' . $a->get_hostname() . "\r\n"
 230                                         . 'MIME-Version: 1.0' . "\r\n"
 231                                         . 'Content-type: text/html; charset=utf-8' . "\r\n"
 232                                         . 'Content-transfer-encoding: quoted-printable' . "\r\n" */
 233                         );
 234                 }
 235                 xml_status(0);
 236                 // NOTREACHED
 237         }
 238
 239         logger('dfrn_notify: feed item count = ' . $feed->get_item_quantity());
 240
 241         // process any deleted entries
 242
 243         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
 244         if(is_array($del_entries) && count($del_entries)) {
 245                 foreach($del_entries as $dentry) {
 246                         $deleted = false;
 247                         if(isset($dentry['attribs']['']['ref'])) {
 248                                 $uri = $dentry['attribs']['']['ref'];
 249                                 $deleted = true;
 250                                 if(isset($dentry['attribs']['']['when'])) {
 251                                         $when = $dentry['attribs']['']['when'];
 252                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
 253                                 }
 254                                 else
 255                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
 256                         }
 257                         if($deleted) {
 258                                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 259                                         dbesc($uri),
 260                                         intval($importer['importer_uid'])
 261                                 );
 262                                 if(count($r)) {
 263                                         $item = $r[0];
 264
 265                                         if(! $item['deleted'])
 266                                                 logger('dfrn_notify: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
 267
 268                                         if($item['uri'] == $item['parent-uri']) {
 269                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
 270                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
 271                                                         dbesc($when),
 272                                                         dbesc(datetime_convert()),
 273                                                         dbesc($item['uri']),
 274                                                         intval($importer['importer_uid'])
 275                                                 );
 276                                         }
 277                                         else {
 278                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
 279                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 280                                                         dbesc($when),
 281                                                         dbesc(datetime_convert()),
 282                                                         dbesc($uri),
 283                                                         intval($importer['importer_uid'])
 284                                                 );
 285                                                 if($item['last-child']) {
 286                                                         // ensure that last-child is set in case the comment that had it just got wiped.
 287                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
 288                                                                 dbesc(datetime_convert()),
 289                                                                 dbesc($item['parent-uri']),
 290                                                                 intval($item['uid'])
 291                                                         );
 292                                                         // who is the last child now?
 293                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
 294                                                                 ORDER BY `created` DESC LIMIT 1",
 295                                                                         dbesc($item['parent-uri']),
 296                                                                         intval($importer['importer_uid'])
 297                                                         );
 298                                                         if(count($r)) {
 299                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
 300                                                                         intval($r[0]['id'])
 301                                                                 );
 302                                                         }
 303                                                 }
 304                                         }
 305                                 }
 306                         }
 307                 }
 308         }
 309
 310
 311         foreach($feed->get_items() as $item) {
 312
 313                 $is_reply = false;
 314                 $item_id = $item->get_id();
 315                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
 316                 if(isset($rawthread[0]['attribs']['']['ref'])) {
 317                         $is_reply = true;
 318                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
 319                 }
 320
 321                 if($is_reply) {
 322                         if($feed->get_item_quantity() == 1) {
 323                                 logger('dfrn_notify: received remote comment');
 324                                 $is_like = false;
 325                                 // remote reply to our post. Import and then notify everybody else.
 326                                 $datarray = get_atom_elements($feed,$item);
 327                                 $datarray['type'] = 'remote-comment';
 328                                 $datarray['wall'] = 1;
 329                                 $datarray['parent-uri'] = $parent_uri;
 330                                 $datarray['uid'] = $importer['importer_uid'];
 331                                 $datarray['contact-id'] = $importer['id'];
 332                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
 333                                         $is_like = true;
 334                                         $datarray['type'] = 'activity';
 335                                         $datarray['gravity'] = GRAVITY_LIKE;
 336                                         $datarray['last-child'] = 0;
 337                                 }
 338                                 $posted_id = item_store($datarray);
 339                                 $parent = 0;
 340
 341                                 if($posted_id) {
 342                                         $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 343                                                 intval($posted_id),
 344                                                 intval($importer['importer_uid'])
 345                                         );
 346                                         if(count($r))
 347                                                 $parent = $r[0]['parent'];
 348
 349                                         if(! $is_like) {
 350                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
 351                                                         dbesc(datetime_convert()),
 352                                                         intval($importer['importer_uid']),
 353                                                         intval($r[0]['parent'])
 354                                                 );
 355
 356                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
 357                                                         dbesc(datetime_convert()),
 358                                                         intval($importer['importer_uid']),
 359                                                         intval($posted_id)
 360                                                 );
 361                                         }
 362
 363                                         if($posted_id && $parent) {
 364
 365                                                 $php_path = ((strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');
 366
 367                                                 proc_run($php_path,"include/notifier.php","comment-import","$posted_id");
 368
 369                                                 if((! $is_like) && ($importer['notify-flags'] & NOTIFY_COMMENT) && (! $importer['self'])) {
 370                                                         require_once('bbcode.php');
 371                                                         $from = stripslashes($datarray['author-name']);
 372                                                         $tpl = load_view_file('view/cmnt_received_eml.tpl');
 373                                                         $email_tpl = replace_macros($tpl, array(
 374                                                                 '$sitename' => $a->config['sitename'],
 375                                                                 '$siteurl' =>  $a->get_baseurl(),
 376                                                                 '$username' => $importer['username'],
 377                                                                 '$email' => $importer['email'],
 378                                                                 '$display' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $posted_id,
 379                                                                 '$from' => $from,
 380                                                                 '$body' => strip_tags(bbcode(stripslashes($datarray['body'])))
 381                                                         ));
 382
 383                                                         $res = mail($importer['email'], $from . t(' commented on an item at ') . $a->config['sitename'],
 384                                                                 $email_tpl, "From: " . t('Administrator') . '@' . $a->get_hostname() );
 385                                                 }
 386                                         }
 387                                         xml_status(0);
 388                                         // NOTREACHED
 389                                 }
 390                         }
 391                         else {
 392                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
 393
 394                                 $item_id = $item->get_id();
 395
 396                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 397                                         dbesc($item_id),
 398                                         intval($importer['importer_uid'])
 399                                 );
 400                                 // FIXME update content if 'updated' changes
 401                                 if(count($r)) {
 402                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
 403                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 404                                                 $r = q("UPDATE `item` SET `last-child` = %d, `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 405                                                         intval($allow[0]['data']),
 406                                                         dbesc(datetime_convert()),
 407                                                         dbesc($item_id),
 408                                                         intval($importer['importer_uid'])
 409                                                 );
 410                                         }
 411                                         continue;
 412                                 }
 413                                 $datarray = get_atom_elements($feed,$item);
 414                                 $datarray['parent-uri'] = $parent_uri;
 415                                 $datarray['uid'] = $importer['importer_uid'];
 416                                 $datarray['contact-id'] = $importer['id'];
 417                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
 418                                         $datarray['type'] = 'activity';
 419                                         $datarray['gravity'] = GRAVITY_LIKE;
 420                                 }
 421                                 $r = item_store($datarray);
 422
 423                                 // find out if our user is involved in this conversation and wants to be notified.
 424
 425                                 if(($datarray['type'] != 'activity') && ($importer['notify-flags'] & NOTIFY_COMMENT)) {
 426
 427                                         $myconv = q("SELECT `author-link` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 ",
 428                                                 dbesc($parent_uri),
 429                                                 intval($importer['importer_uid'])
 430                                         );
 431                                         if(count($myconv)) {
 432                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
 433                                                 foreach($myconv as $conv) {
 434                                                         if(! link_compare($conv['author-link'],$importer_url))
 435                                                                 continue;
 436                                                         require_once('bbcode.php');
 437                                                         $from = stripslashes($datarray['author-name']);
 438                                                         $tpl = load_view_file('view/cmnt_received_eml.tpl');
 439                                                         $email_tpl = replace_macros($tpl, array(
 440                                                                 '$sitename' => $a->config['sitename'],
 441                                                                 '$siteurl' =>  $a->get_baseurl(),
 442                                                                 '$username' => $importer['username'],
 443                                                                 '$email' => $importer['email'],
 444                                                                 '$from' => $from,
 445                                                                 '$display' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $r,
 446                                                                 '$body' => strip_tags(bbcode(stripslashes($datarray['body'])))
 447                                                         ));
 448
 449                                                         $res = mail($importer['email'], $from . t(" commented on an item at ")
 450                                                                 . $a->config['sitename'],
 451                                                                 $email_tpl,t("From: Administrator@") . $a->get_hostname() );
 452                                                         break;
 453                                                 }
 454                                         }
 455                                 }
 456                                 continue;
 457                         }
 458                 }
 459                 else {
 460                         // Head post of a conversation. Have we seen it? If not, import it.
 461
 462                         $item_id = $item->get_id();
 463                         $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 464                                 dbesc($item_id),
 465                                 intval($importer['importer_uid'])
 466                         );
 467                         if(count($r)) {
 468                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
 469                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 470                                         $r = q("UPDATE `item` SET `last-child` = %d, `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 471                                                 intval($allow[0]['data']),
 472                                                 dbesc(datetime_convert()),
 473                                                 dbesc($item_id),
 474                                                 intval($importer['importer_uid'])
 475                                         );
 476                                 }
 477                                 continue;
 478                         }
 479
 480
 481                         $datarray = get_atom_elements($feed,$item);
 482                         $datarray['parent-uri'] = $item_id;
 483                         $datarray['uid'] = $importer['importer_uid'];
 484                         $datarray['contact-id'] = $importer['id'];
 485                         $r = item_store($datarray);
 486                         continue;
 487                 }
 488         }
 489
 490         xml_status(0);
 491         // NOTREACHED
 492
 493 }
 494
 495
 496 function dfrn_notify_content(&$a) {
 497
 498         if(x($_GET,'dfrn_id')) {
 499
 500                 // initial communication from external contact, $direction is their direction.
 501                 // If this is a duplex communication, ours will be the opposite.
 502
 503                 $dfrn_id = notags(trim($_GET['dfrn_id']));
 504                 $dfrn_version = (float) $_GET['dfrn_version'];
 505
 506                 logger('dfrn_notify: new notification dfrn_id=' . $dfrn_id);
 507
 508                 $direction = (-1);
 509                 if(strpos($dfrn_id,':') == 1) {
 510                         $direction = intval(substr($dfrn_id,0,1));
 511                         $dfrn_id = substr($dfrn_id,2);
 512                 }
 513
 514                 $hash = random_string();
 515
 516                 $status = 0;
 517
 518                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 519
 520                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 521                         VALUES( '%s', '%s', %d ) ",
 522                         dbesc($hash),
 523                         dbesc($dfrn_id),
 524                         intval(time() + 90 )
 525                 );
 526
 527                 logger('dfrn_notify: challenge=' . $hash );
 528
 529                 $sql_extra = '';
 530                 switch($direction) {
 531                         case (-1):
 532                                 $sql_extra = sprintf(" AND ( `issued-id` = '%s' OR `dfrn-id` = '%s' ) ", dbesc($dfrn_id), dbesc($dfrn_id));
 533                                 $my_id = $dfrn_id;
 534                                 break;
 535                         case 0:
 536                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 537                                 $my_id = '1:' . $dfrn_id;
 538                                 break;
 539                         case 1:
 540                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 541                                 $my_id = '0:' . $dfrn_id;
 542                                 break;
 543                         default:
 544                                 $status = 1;
 545                                 break; // NOTREACHED
 546                 }
 547
 548                 $r = q("SELECT `contact`.*, `user`.`nickname` FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
 549                                 WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 AND `user`.`nickname` = '%s' $sql_extra LIMIT 1",
 550                                 dbesc($a->argv[1])
 551                 );
 552
 553                 if(! count($r))
 554                         $status = 1;
 555
 556                 $challenge = '';
 557                 $encrypted_id = '';
 558                 $id_str = $my_id . '.' . mt_rand(1000,9999);
 559
 560                 if((($r[0]['duplex']) && strlen($r[0]['prvkey'])) || (! strlen($r[0]['pubkey']))) {
 561                         openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 562                         openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
 563                 }
 564                 else {
 565                         openssl_public_encrypt($hash,$challenge,$r[0]['pubkey']);
 566                         openssl_public_encrypt($id_str,$encrypted_id,$r[0]['pubkey']);
 567                 }
 568
 569                 $challenge    = bin2hex($challenge);
 570                 $encrypted_id = bin2hex($encrypted_id);
 571
 572                 $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
 573
 574                 $rino_enable = get_config('system','rino_encrypt');
 575
 576                 if(! $rino_enable)
 577                         $rino = 0;
 578
 579
 580                 header("Content-type: text/xml");
 581
 582                 echo '<?xml version="1.0" encoding="UTF-8"?>' . "\r\n"
 583                         . '<dfrn_notify>' . "\r\n"
 584                         . "\t" . '<status>' . $status . '</status>' . "\r\n"
 585                         . "\t" . '<dfrn_version>' . DFRN_PROTOCOL_VERSION . '</dfrn_version>' . "\r\n"
 586                         . "\t" . '<rino>' . $rino . '</rino>' . "\r\n"
 587                         . "\t" . '<dfrn_id>' . $encrypted_id . '</dfrn_id>' . "\r\n"
 588                         . "\t" . '<challenge>' . $challenge . '</challenge>' . "\r\n"
 589                         . '</dfrn_notify>' . "\r\n" ;
 590
 591                 killme();
 592         }
 593
 594 }