include/items.php

   1 <?php
   2
   3 require_once('include/bbcode.php');
   4 require_once('include/oembed.php');
   5 require_once('include/salmon.php');
   6 require_once('include/crypto.php');
   7 require_once('include/Photo.php');
   8 require_once('include/tags.php');
   9 require_once('include/files.php');
  10 require_once('include/text.php');
  11 require_once('include/email.php');
  12 require_once('include/threads.php');
  13 require_once('include/socgraph.php');
  14 require_once('include/plaintext.php');
  15 require_once('include/ostatus.php');
  16 require_once('include/feed.php');
  17 require_once('mod/share.php');
  18
  19 require_once('library/defuse/php-encryption-1.2.1/Crypto.php');
  20
  21
  22 function get_feed_for(&$a, $dfrn_id, $owner_nick, $last_update, $direction = 0, $forpubsub = false) {
  23
  24
  25         $sitefeed    = ((strlen($owner_nick)) ? false : true); // not yet implemented, need to rewrite huge chunks of following logic
  26         $public_feed = (($dfrn_id) ? false : true);
  27         $starred     = false;   // not yet implemented, possible security issues
  28         $converse    = false;
  29
  30         if($public_feed && $a->argc > 2) {
  31                 for($x = 2; $x < $a->argc; $x++) {
  32                         if($a->argv[$x] == 'converse')
  33                                 $converse = true;
  34                         if($a->argv[$x] == 'starred')
  35                                 $starred = true;
  36                         if($a->argv[$x] === 'category' && $a->argc > ($x + 1) && strlen($a->argv[$x+1]))
  37                                 $category = $a->argv[$x+1];
  38                 }
  39         }
  40
  41
  42
  43         // default permissions - anonymous user
  44
  45         $sql_extra = " AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = '' AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = '' ";
  46
  47         $r = q("SELECT `contact`.*, `user`.`uid` AS `user_uid`, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`
  48                 FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
  49                 WHERE `contact`.`self` = 1 AND `user`.`nickname` = '%s' LIMIT 1",
  50                 dbesc($owner_nick)
  51         );
  52
  53         if(! count($r))
  54                 killme();
  55
  56         $owner = $r[0];
  57         $owner_id = $owner['user_uid'];
  58         $owner_nick = $owner['nickname'];
  59
  60         $birthday = feed_birthday($owner_id,$owner['timezone']);
  61
  62         $sql_post_table = "";
  63         $visibility = "";
  64
  65         if(! $public_feed) {
  66
  67                 $sql_extra = '';
  68                 switch($direction) {
  69                         case (-1):
  70                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  71                                 $my_id = $dfrn_id;
  72                                 break;
  73                         case 0:
  74                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  75                                 $my_id = '1:' . $dfrn_id;
  76                                 break;
  77                         case 1:
  78                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  79                                 $my_id = '0:' . $dfrn_id;
  80                                 break;
  81                         default:
  82                                 return false;
  83                                 break; // NOTREACHED
  84                 }
  85
  86                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
  87                         intval($owner_id)
  88                 );
  89
  90                 if(! count($r))
  91                         killme();
  92
  93                 $contact = $r[0];
  94                 require_once('include/security.php');
  95                 $groups = init_groups_visitor($contact['id']);
  96
  97                 if(count($groups)) {
  98                         for($x = 0; $x < count($groups); $x ++)
  99                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
 100                         $gs = implode('|', $groups);
 101                 }
 102                 else
 103                         $gs = '<<>>' ; // Impossible to match
 104
 105                 $sql_extra = sprintf("
 106                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
 107                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
 108                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
 109                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
 110                 ",
 111                         intval($contact['id']),
 112                         intval($contact['id']),
 113                         dbesc($gs),
 114                         dbesc($gs)
 115                 );
 116         }
 117
 118         if($public_feed)
 119                 $sort = 'DESC';
 120         else
 121                 $sort = 'ASC';
 122
 123         // Include answers to status.net posts in pubsub feeds
 124         if($forpubsub) {
 125                 $sql_post_table = "INNER JOIN `thread` ON `thread`.`iid` = `item`.`parent`
 126                                 LEFT JOIN `item` AS `thritem` ON `thritem`.`uri`=`item`.`thr-parent` AND `thritem`.`uid`=`item`.`uid`";
 127                 $visibility = sprintf("AND (`item`.`parent` = `item`.`id`) OR (`item`.`network` = '%s' AND ((`thread`.`network`='%s') OR (`thritem`.`network` = '%s')))",
 128                                         dbesc(NETWORK_DFRN), dbesc(NETWORK_OSTATUS), dbesc(NETWORK_OSTATUS));
 129                 $date_field = "`received`";
 130                 $sql_order = "`item`.`received` DESC";
 131         } else {
 132                 $date_field = "`changed`";
 133                 $sql_order = "`item`.`parent` ".$sort.", `item`.`created` ASC";
 134         }
 135
 136         if(! strlen($last_update))
 137                 $last_update = 'now -30 days';
 138
 139         if(isset($category)) {
 140                 $sql_post_table = sprintf("INNER JOIN (SELECT `oid` FROM `term` WHERE `term` = '%s' AND `otype` = %d AND `type` = %d AND `uid` = %d ORDER BY `tid` DESC) AS `term` ON `item`.`id` = `term`.`oid` ",
 141                                 dbesc(protect_sprintf($category)), intval(TERM_OBJ_POST), intval(TERM_CATEGORY), intval($owner_id));
 142                 //$sql_extra .= file_tag_file_query('item',$category,'category');
 143         }
 144
 145         if($public_feed) {
 146                 if(! $converse)
 147                         $sql_extra .= " AND `contact`.`self` = 1 ";
 148         }
 149
 150         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
 151
 152         //      AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 153         //      dbesc($check_date),
 154
 155         $r = q("SELECT STRAIGHT_JOIN `item`.*, `item`.`id` AS `item_id`,
 156                 `contact`.`name`, `contact`.`network`, `contact`.`photo`, `contact`.`url`,
 157                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
 158                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
 159                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`,
 160                 `sign`.`signed_text`, `sign`.`signature`, `sign`.`signer`
 161                 FROM `item` $sql_post_table
 162                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 163                 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 164                 LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
 165                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1 and `item`.`moderated` = 0 AND `item`.`parent` != 0
 166                 AND ((`item`.`wall` = 1) $visibility) AND `item`.$date_field > '%s'
 167                 $sql_extra
 168                 ORDER BY $sql_order LIMIT 0, 300",
 169                 intval($owner_id),
 170                 dbesc($check_date),
 171                 dbesc($sort)
 172         );
 173
 174         // Will check further below if this actually returned results.
 175         // We will provide an empty feed if that is the case.
 176
 177         $items = $r;
 178
 179         $feed_template = get_markup_template(($dfrn_id) ? 'atom_feed_dfrn.tpl' : 'atom_feed.tpl');
 180
 181         $atom = '';
 182
 183         $hubxml = feed_hublinks();
 184
 185         $salmon = feed_salmonlinks($owner_nick);
 186
 187         $alternatelink = $owner['url'];
 188
 189         if(isset($category))
 190                 $alternatelink .= "/category/".$category;
 191
 192         $atom .= replace_macros($feed_template, array(
 193                 '$version'      => xmlify(FRIENDICA_VERSION),
 194                 '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 195                 '$feed_title'   => xmlify($owner['name']),
 196                 '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
 197                 '$hub'          => $hubxml,
 198                 '$salmon'       => $salmon,
 199                 '$alternatelink' => xmlify($alternatelink),
 200                 '$name'         => xmlify($owner['name']),
 201                 '$profile_page' => xmlify($owner['url']),
 202                 '$photo'        => xmlify($owner['photo']),
 203                 '$thumb'        => xmlify($owner['thumb']),
 204                 '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 205                 '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 206                 '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME)) ,
 207                 '$birthday'     => ((strlen($birthday)) ? '<dfrn:birthday>' . xmlify($birthday) . '</dfrn:birthday>' : ''),
 208                 '$community'    => (($owner['page-flags'] == PAGE_COMMUNITY) ? '<dfrn:community>1</dfrn:community>' : '')
 209         ));
 210
 211         call_hooks('atom_feed', $atom);
 212
 213         if(! count($items)) {
 214
 215                 call_hooks('atom_feed_end', $atom);
 216
 217                 $atom .= '</feed>' . "\r\n";
 218                 return $atom;
 219         }
 220
 221         foreach($items as $item) {
 222
 223                 // prevent private email from leaking.
 224                 if($item['network'] === NETWORK_MAIL)
 225                         continue;
 226
 227                 // public feeds get html, our own nodes use bbcode
 228
 229                 if($public_feed) {
 230                         $type = 'html';
 231                         // catch any email that's in a public conversation and make sure it doesn't leak
 232                         if($item['private'])
 233                                 continue;
 234                 }
 235                 else {
 236                         $type = 'text';
 237                 }
 238
 239                 $atom .= atom_entry($item,$type,null,$owner,true);
 240         }
 241
 242         call_hooks('atom_feed_end', $atom);
 243
 244         $atom .= '</feed>' . "\r\n";
 245
 246         return $atom;
 247 }
 248
 249
 250 function construct_verb($item) {
 251         if($item['verb'])
 252                 return $item['verb'];
 253         return ACTIVITY_POST;
 254 }
 255
 256 function construct_activity_object($item) {
 257
 258         if($item['object']) {
 259                 $o = '<as:object>' . "\r\n";
 260                 $r = parse_xml_string($item['object'],false);
 261
 262
 263                 if(! $r)
 264                         return '';
 265                 if($r->type)
 266                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 267                 if($r->id)
 268                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 269                 if($r->title)
 270                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 271                 if($r->link) {
 272                         if(substr($r->link,0,1) === '<') {
 273                                 // patch up some facebook "like" activity objects that got stored incorrectly
 274                                 // for a couple of months prior to 9-Jun-2011 and generated bad XML.
 275                                 // we can probably remove this hack here and in the following function in a few months time.
 276                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 277                                         $r->link = str_replace('&','&amp;', $r->link);
 278                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 279                                 $o .= $r->link;
 280                         }
 281                         else
 282                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 283                 }
 284                 if($r->content)
 285                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 286                 $o .= '</as:object>' . "\r\n";
 287                 return $o;
 288         }
 289
 290         return '';
 291 }
 292
 293 function construct_activity_target($item) {
 294
 295         if($item['target']) {
 296                 $o = '<as:target>' . "\r\n";
 297                 $r = parse_xml_string($item['target'],false);
 298                 if(! $r)
 299                         return '';
 300                 if($r->type)
 301                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 302                 if($r->id)
 303                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 304                 if($r->title)
 305                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 306                 if($r->link) {
 307                         if(substr($r->link,0,1) === '<') {
 308                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 309                                         $r->link = str_replace('&','&amp;', $r->link);
 310                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 311                                 $o .= $r->link;
 312                         }
 313                         else
 314                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 315                 }
 316                 if($r->content)
 317                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 318                 $o .= '</as:target>' . "\r\n";
 319                 return $o;
 320         }
 321
 322         return '';
 323 }
 324
 325 /* limit_body_size()
 326  *
 327  *              The purpose of this function is to apply system message length limits to
 328  *              imported messages without including any embedded photos in the length
 329  */
 330 if(! function_exists('limit_body_size')) {
 331 function limit_body_size($body) {
 332
 333 //      logger('limit_body_size: start', LOGGER_DEBUG);
 334
 335         $maxlen = get_max_import_size();
 336
 337         // If the length of the body, including the embedded images, is smaller
 338         // than the maximum, then don't waste time looking for the images
 339         if($maxlen && (strlen($body) > $maxlen)) {
 340
 341                 logger('limit_body_size: the total body length exceeds the limit', LOGGER_DEBUG);
 342
 343                 $orig_body = $body;
 344                 $new_body = '';
 345                 $textlen = 0;
 346                 $max_found = false;
 347
 348                 $img_start = strpos($orig_body, '[img');
 349                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 350                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 351                 while(($img_st_close !== false) && ($img_end !== false)) {
 352
 353                         $img_st_close++; // make it point to AFTER the closing bracket
 354                         $img_end += $img_start;
 355                         $img_end += strlen('[/img]');
 356
 357                         if(! strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
 358                                 // This is an embedded image
 359
 360                                 if( ($textlen + $img_start) > $maxlen ) {
 361                                         if($textlen < $maxlen) {
 362                                                 logger('limit_body_size: the limit happens before an embedded image', LOGGER_DEBUG);
 363                                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 364                                                 $textlen = $maxlen;
 365                                         }
 366                                 }
 367                                 else {
 368                                         $new_body = $new_body . substr($orig_body, 0, $img_start);
 369                                         $textlen += $img_start;
 370                                 }
 371
 372                                 $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
 373                         }
 374                         else {
 375
 376                                 if( ($textlen + $img_end) > $maxlen ) {
 377                                         if($textlen < $maxlen) {
 378                                                 logger('limit_body_size: the limit happens before the end of a non-embedded image', LOGGER_DEBUG);
 379                                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 380                                                 $textlen = $maxlen;
 381                                         }
 382                                 }
 383                                 else {
 384                                         $new_body = $new_body . substr($orig_body, 0, $img_end);
 385                                         $textlen += $img_end;
 386                                 }
 387                         }
 388                         $orig_body = substr($orig_body, $img_end);
 389
 390                         if($orig_body === false) // in case the body ends on a closing image tag
 391                                 $orig_body = '';
 392
 393                         $img_start = strpos($orig_body, '[img');
 394                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 395                         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 396                 }
 397
 398                 if( ($textlen + strlen($orig_body)) > $maxlen) {
 399                         if($textlen < $maxlen) {
 400                                 logger('limit_body_size: the limit happens after the end of the last image', LOGGER_DEBUG);
 401                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 402                                 $textlen = $maxlen;
 403                         }
 404                 }
 405                 else {
 406                         logger('limit_body_size: the text size with embedded images extracted did not violate the limit', LOGGER_DEBUG);
 407                         $new_body = $new_body . $orig_body;
 408                         $textlen += strlen($orig_body);
 409                 }
 410
 411                 return $new_body;
 412         }
 413         else
 414                 return $body;
 415 }}
 416
 417 function title_is_body($title, $body) {
 418
 419         $title = strip_tags($title);
 420         $title = trim($title);
 421         $title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
 422         $title = str_replace(array("\n", "\r", "\t", " "), array("","","",""), $title);
 423
 424         $body = strip_tags($body);
 425         $body = trim($body);
 426         $body = html_entity_decode($body, ENT_QUOTES, 'UTF-8');
 427         $body = str_replace(array("\n", "\r", "\t", " "), array("","","",""), $body);
 428
 429         if (strlen($title) < strlen($body))
 430                 $body = substr($body, 0, strlen($title));
 431
 432         if (($title != $body) and (substr($title, -3) == "...")) {
 433                 $pos = strrpos($title, "...");
 434                 if ($pos > 0) {
 435                         $title = substr($title, 0, $pos);
 436                         $body = substr($body, 0, $pos);
 437                 }
 438         }
 439
 440         return($title == $body);
 441 }
 442
 443
 444
 445 function get_atom_elements($feed, $item, $contact = array()) {
 446
 447         require_once('library/HTMLPurifier.auto.php');
 448         require_once('include/html2bbcode.php');
 449
 450         $best_photo = array();
 451
 452         $res = array();
 453
 454         $author = $item->get_author();
 455         if($author) {
 456                 $res['author-name'] = unxmlify($author->get_name());
 457                 $res['author-link'] = unxmlify($author->get_link());
 458         }
 459         else {
 460                 $res['author-name'] = unxmlify($feed->get_title());
 461                 $res['author-link'] = unxmlify($feed->get_permalink());
 462         }
 463         $res['uri'] = unxmlify($item->get_id());
 464         $res['title'] = unxmlify($item->get_title());
 465         $res['body'] = unxmlify($item->get_content());
 466         $res['plink'] = unxmlify($item->get_link(0));
 467
 468         if (isset($contact["network"]) AND ($contact["network"] == NETWORK_FEED) AND strstr($res['plink'], ".app.net/")) {
 469                 logger("get_atom_elements: detected app.net posting: ".print_r($res, true), LOGGER_DEBUG);
 470                 $res['title'] = "";
 471                 $res['body'] = nl2br($res['body']);
 472         }
 473
 474         // removing the content of the title if its identically to the body
 475         // This helps with auto generated titles e.g. from tumblr
 476         if (title_is_body($res["title"], $res["body"]))
 477                 $res['title'] = "";
 478
 479         if($res['plink'])
 480                 $base_url = implode('/', array_slice(explode('/',$res['plink']),0,3));
 481         else
 482                 $base_url = '';
 483
 484         // look for a photo. We should check media size and find the best one,
 485         // but for now let's just find any author photo
 486         // Additionally we look for an alternate author link. On OStatus this one is the one we want.
 487
 488         $authorlinks = $item->feed->data["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["feed"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["author"][0]["child"]["http://www.w3.org/2005/Atom"]["link"];
 489         if (is_array($authorlinks)) {
 490                 foreach ($authorlinks as $link) {
 491                         $linkdata = array_shift($link["attribs"]);
 492
 493                         if ($linkdata["rel"] == "alternate")
 494                                 $res["author-link"] = $linkdata["href"];
 495                 };
 496         }
 497
 498         $rawauthor = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 499
 500         if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 501                 $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 502                 foreach($base as $link) {
 503                         if($link['attribs']['']['rel'] === 'alternate')
 504                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 505
 506                         if(!x($res, 'author-avatar') || !$res['author-avatar']) {
 507                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 508                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 509                         }
 510                 }
 511         }
 512
 513         $rawactor = $item->get_item_tags(NAMESPACE_ACTIVITY, 'actor');
 514
 515         if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 516                 $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 517                 if($base && count($base)) {
 518                         foreach($base as $link) {
 519                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 520                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 521                                 if(!x($res, 'author-avatar') || !$res['author-avatar']) {
 522                                         if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 523                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 524                                 }
 525                         }
 526                 }
 527         }
 528
 529         // No photo/profile-link on the item - look at the feed level
 530
 531         if((! (x($res,'author-link'))) || (! (x($res,'author-avatar')))) {
 532                 $rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 533                 if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 534                         $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 535                         foreach($base as $link) {
 536                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 537                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 538                                 if(! $res['author-avatar']) {
 539                                         if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 540                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 541                                 }
 542                         }
 543                 }
 544
 545                 $rawactor = $feed->get_feed_tags(NAMESPACE_ACTIVITY, 'subject');
 546
 547                 if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 548                         $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 549
 550                         if($base && count($base)) {
 551                                 foreach($base as $link) {
 552                                         if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 553                                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 554                                         if(! (x($res,'author-avatar'))) {
 555                                                 if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 556                                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 557                                         }
 558                                 }
 559                         }
 560                 }
 561         }
 562
 563         $apps = $item->get_item_tags(NAMESPACE_STATUSNET,'notice_info');
 564         if($apps && $apps[0]['attribs']['']['source']) {
 565                 $res['app'] = strip_tags(unxmlify($apps[0]['attribs']['']['source']));
 566                 if($res['app'] === 'web')
 567                         $res['app'] = 'OStatus';
 568         }
 569
 570         // base64 encoded json structure representing Diaspora signature
 571
 572         $dsig = $item->get_item_tags(NAMESPACE_DFRN,'diaspora_signature');
 573         if($dsig) {
 574                 $res['dsprsig'] = unxmlify($dsig[0]['data']);
 575         }
 576
 577         $dguid = $item->get_item_tags(NAMESPACE_DFRN,'diaspora_guid');
 578         if($dguid)
 579                 $res['guid'] = unxmlify($dguid[0]['data']);
 580
 581         $bm = $item->get_item_tags(NAMESPACE_DFRN,'bookmark');
 582         if($bm)
 583                 $res['bookmark'] = ((unxmlify($bm[0]['data']) === 'true') ? 1 : 0);
 584
 585
 586         /**
 587          * If there's a copy of the body content which is guaranteed to have survived mangling in transit, use it.
 588          */
 589
 590         $have_real_body = false;
 591
 592         $rawenv = $item->get_item_tags(NAMESPACE_DFRN, 'env');
 593         if($rawenv) {
 594                 $have_real_body = true;
 595                 $res['body'] = $rawenv[0]['data'];
 596                 $res['body'] = str_replace(array(' ',"\t","\r","\n"), array('','','',''),$res['body']);
 597                 // make sure nobody is trying to sneak some html tags by us
 598                 $res['body'] = notags(base64url_decode($res['body']));
 599         }
 600
 601
 602         $res['body'] = limit_body_size($res['body']);
 603
 604         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 605         // the content type. Our own network only emits text normally, though it might have been converted to
 606         // html if we used a pubsubhubbub transport. But if we see even one html tag in our text, we will
 607         // have to assume it is all html and needs to be purified.
 608
 609         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 610         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 611         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 612         // html.
 613
 614         if((strpos($res['body'],'<') !== false) && (strpos($res['body'],'>') !== false)) {
 615
 616                 $res['body'] = reltoabs($res['body'],$base_url);
 617
 618                 $res['body'] = html2bb_video($res['body']);
 619
 620                 $res['body'] = oembed_html2bbcode($res['body']);
 621
 622                 $config = HTMLPurifier_Config::createDefault();
 623                 $config->set('Cache.DefinitionImpl', null);
 624
 625                 // we shouldn't need a whitelist, because the bbcode converter
 626                 // will strip out any unsupported tags.
 627
 628                 $purifier = new HTMLPurifier($config);
 629                 $res['body'] = $purifier->purify($res['body']);
 630
 631                 $res['body'] = @html2bbcode($res['body']);
 632
 633
 634         }
 635         elseif(! $have_real_body) {
 636
 637                 // it's not one of our messages and it has no tags
 638                 // so it's probably just text. We'll escape it just to be safe.
 639
 640                 $res['body'] = escape_tags($res['body']);
 641         }
 642
 643
 644         // this tag is obsolete but we keep it for really old sites
 645
 646         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 647         if($allow && $allow[0]['data'] == 1)
 648                 $res['last-child'] = 1;
 649         else
 650                 $res['last-child'] = 0;
 651
 652         $private = $item->get_item_tags(NAMESPACE_DFRN,'private');
 653         if($private && intval($private[0]['data']) > 0)
 654                 $res['private'] = intval($private[0]['data']);
 655         else
 656                 $res['private'] = 0;
 657
 658         $extid = $item->get_item_tags(NAMESPACE_DFRN,'extid');
 659         if($extid && $extid[0]['data'])
 660                 $res['extid'] = $extid[0]['data'];
 661
 662         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 663         if($rawlocation)
 664                 $res['location'] = unxmlify($rawlocation[0]['data']);
 665
 666
 667         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 668         if($rawcreated)
 669                 $res['created'] = unxmlify($rawcreated[0]['data']);
 670
 671
 672         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 673         if($rawedited)
 674                 $res['edited'] = unxmlify($rawedited[0]['data']);
 675
 676         if((x($res,'edited')) && (! (x($res,'created'))))
 677                 $res['created'] = $res['edited'];
 678
 679         if(! $res['created'])
 680                 $res['created'] = $item->get_date('c');
 681
 682         if(! $res['edited'])
 683                 $res['edited'] = $item->get_date('c');
 684
 685
 686         // Disallow time travelling posts
 687
 688         $d1 = strtotime($res['created']);
 689         $d2 = strtotime($res['edited']);
 690         $d3 = strtotime('now');
 691
 692         if($d1 > $d3)
 693                 $res['created'] = datetime_convert();
 694         if($d2 > $d3)
 695                 $res['edited'] = datetime_convert();
 696
 697         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 698         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 699                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 700         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 701                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 702         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 703                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 704         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 705                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 706
 707         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 708                 $base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 709
 710                 foreach($base as $link) {
 711                         if(!x($res, 'owner-avatar') || !$res['owner-avatar']) {
 712                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 713                                         $res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
 714                         }
 715                 }
 716         }
 717
 718         $rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
 719         if($rawgeo)
 720                 $res['coord'] = unxmlify($rawgeo[0]['data']);
 721
 722         if ($contact["network"] == NETWORK_FEED) {
 723                 $res['verb'] = ACTIVITY_POST;
 724                 $res['object-type'] = ACTIVITY_OBJ_NOTE;
 725         }
 726
 727         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 728
 729         // select between supported verbs
 730
 731         if($rawverb) {
 732                 $res['verb'] = unxmlify($rawverb[0]['data']);
 733         }
 734
 735         // translate OStatus unfollow to activity streams if it happened to get selected
 736
 737         if((x($res,'verb')) && ($res['verb'] === 'http://ostatus.org/schema/1.0/unfollow'))
 738                 $res['verb'] = ACTIVITY_UNFOLLOW;
 739
 740         $cats = $item->get_categories();
 741         if($cats) {
 742                 $tag_arr = array();
 743                 foreach($cats as $cat) {
 744                         $term = $cat->get_term();
 745                         if(! $term)
 746                                 $term = $cat->get_label();
 747                         $scheme = $cat->get_scheme();
 748                         if($scheme && $term && stristr($scheme,'X-DFRN:'))
 749                                 $tag_arr[] = substr($scheme,7,1) . '[url=' . unxmlify(substr($scheme,9)) . ']' . unxmlify($term) . '[/url]';
 750                         elseif($term)
 751                                 $tag_arr[] = notags(trim($term));
 752                 }
 753                 $res['tag'] =  implode(',', $tag_arr);
 754         }
 755
 756         $attach = $item->get_enclosures();
 757         if($attach) {
 758                 $att_arr = array();
 759                 foreach($attach as $att) {
 760                         $len   = intval($att->get_length());
 761                         $link  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_link()))));
 762                         $title = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_title()))));
 763                         $type  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_type()))));
 764                         if(strpos($type,';'))
 765                                 $type = substr($type,0,strpos($type,';'));
 766                         if((! $link) || (strpos($link,'http') !== 0))
 767                                 continue;
 768
 769                         if(! $title)
 770                                 $title = ' ';
 771                         if(! $type)
 772                                 $type = 'application/octet-stream';
 773
 774                         $att_arr[] = '[attach]href="' . $link . '" length="' . $len . '" type="' . $type . '" title="' . $title . '"[/attach]';
 775                 }
 776                 $res['attach'] = implode(',', $att_arr);
 777         }
 778
 779         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 780
 781         if($rawobj) {
 782                 $res['object'] = '<object>' . "\n";
 783                 $child = $rawobj[0]['child'];
 784                 if($child[NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 785                         $res['object-type'] = $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 786                         $res['object'] .= '<type>' . $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 787                 }
 788                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'id') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 789                         $res['object'] .= '<id>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 790                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'link') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 791                         $res['object'] .= '<link>' . encode_rel_links($child[SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 792                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'title') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 793                         $res['object'] .= '<title>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 794                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'content') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 795                         $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 796                         if(! $body)
 797                                 $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 798                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 799                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 800                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 801
 802                                 $body = html2bb_video($body);
 803
 804                                 $config = HTMLPurifier_Config::createDefault();
 805                                 $config->set('Cache.DefinitionImpl', null);
 806
 807                                 $purifier = new HTMLPurifier($config);
 808                                 $body = $purifier->purify($body);
 809                                 $body = html2bbcode($body);
 810                         }
 811
 812                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 813                 }
 814
 815                 $res['object'] .= '</object>' . "\n";
 816         }
 817
 818         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'target');
 819
 820         if($rawobj) {
 821                 $res['target'] = '<target>' . "\n";
 822                 $child = $rawobj[0]['child'];
 823                 if($child[NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 824                         $res['target'] .= '<type>' . $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 825                 }
 826                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'id') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 827                         $res['target'] .= '<id>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 828                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'link') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 829                         $res['target'] .= '<link>' . encode_rel_links($child[SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 830                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'data') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 831                         $res['target'] .= '<title>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 832                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'data') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 833                         $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 834                         if(! $body)
 835                                 $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 836                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 837                         $res['target'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 838                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 839
 840                                 $body = html2bb_video($body);
 841
 842                                 $config = HTMLPurifier_Config::createDefault();
 843                                 $config->set('Cache.DefinitionImpl', null);
 844
 845                                 $purifier = new HTMLPurifier($config);
 846                                 $body = $purifier->purify($body);
 847                                 $body = html2bbcode($body);
 848                         }
 849
 850                         $res['target'] .= '<content>' . $body . '</content>' . "\n";
 851                 }
 852
 853                 $res['target'] .= '</target>' . "\n";
 854         }
 855
 856         // This is some experimental stuff. By now retweets are shown with "RT:"
 857         // But: There is data so that the message could be shown similar to native retweets
 858         // There is some better way to parse this array - but it didn't worked for me.
 859         $child = $item->feed->data["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["feed"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["entry"][0]["child"]["http://activitystrea.ms/spec/1.0/"][object][0]["child"];
 860         if (is_array($child)) {
 861                 logger('get_atom_elements: Looking for status.net repeated message');
 862
 863                 $message = $child["http://activitystrea.ms/spec/1.0/"]["object"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["content"][0]["data"];
 864                 $orig_id = ostatus_convert_href($child["http://activitystrea.ms/spec/1.0/"]["object"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["id"][0]["data"]);
 865                 $author = $child[SIMPLEPIE_NAMESPACE_ATOM_10]["author"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10];
 866                 $uri = $author["uri"][0]["data"];
 867                 $name = $author["name"][0]["data"];
 868                 $avatar = @array_shift($author["link"][2]["attribs"]);
 869                 $avatar = $avatar["href"];
 870
 871                 if (($name != "") and ($uri != "") and ($avatar != "") and ($message != "")) {
 872                         logger('get_atom_elements: fixing sender of repeated message. '.$orig_id, LOGGER_DEBUG);
 873
 874                         if (!intval(get_config('system','wall-to-wall_share'))) {
 875                                 $prefix = share_header($name, $uri, $avatar, "", "", $orig_link);
 876
 877                                 $res["body"] = $prefix.html2bbcode($message)."[/share]";
 878                         } else {
 879                                 $res["owner-name"] = $res["author-name"];
 880                                 $res["owner-link"] = $res["author-link"];
 881                                 $res["owner-avatar"] = $res["author-avatar"];
 882
 883                                 $res["author-name"] = $name;
 884                                 $res["author-link"] = $uri;
 885                                 $res["author-avatar"] = $avatar;
 886
 887                                 $res["body"] = html2bbcode($message);
 888                         }
 889                 }
 890         }
 891
 892         if (isset($contact["network"]) AND ($contact["network"] == NETWORK_FEED) AND $contact['fetch_further_information']) {
 893                 $preview = "";
 894
 895                 // Handle enclosures and treat them as preview picture
 896                 if (isset($attach))
 897                         foreach ($attach AS $attachment)
 898                                 if ($attachment->type == "image/jpeg")
 899                                         $preview = $attachment->link;
 900
 901                 $res["body"] = $res["title"].add_page_info($res['plink'], false, $preview, ($contact['fetch_further_information'] == 2), $contact['ffi_keyword_blacklist']);
 902                 $res["tag"] = add_page_keywords($res['plink'], false, $preview, ($contact['fetch_further_information'] == 2), $contact['ffi_keyword_blacklist']);
 903                 $res["title"] = "";
 904                 $res["object-type"] = ACTIVITY_OBJ_BOOKMARK;
 905                 unset($res["attach"]);
 906         } elseif (isset($contact["network"]) AND ($contact["network"] == NETWORK_OSTATUS))
 907                 $res["body"] = add_page_info_to_body($res["body"]);
 908         elseif (isset($contact["network"]) AND ($contact["network"] == NETWORK_FEED) AND strstr($res['plink'], ".app.net/")) {
 909                 $res["body"] = add_page_info_to_body($res["body"]);
 910         }
 911
 912         $arr = array('feed' => $feed, 'item' => $item, 'result' => $res);
 913
 914         call_hooks('parse_atom', $arr);
 915
 916         return $res;
 917 }
 918
 919 function add_page_info_data($data) {
 920         call_hooks('page_info_data', $data);
 921
 922         // It maybe is a rich content, but if it does have everything that a link has,
 923         // then treat it that way
 924         if (($data["type"] == "rich") AND is_string($data["title"]) AND
 925                 is_string($data["text"]) AND (sizeof($data["images"]) > 0))
 926                 $data["type"] = "link";
 927
 928         if ((($data["type"] != "link") AND ($data["type"] != "video") AND ($data["type"] != "photo")) OR ($data["title"] == $url))
 929                 return("");
 930
 931         if ($no_photos AND ($data["type"] == "photo"))
 932                 return("");
 933
 934         // If the link contains BBCode stuff, make a short link out of this to avoid parsing problems
 935         if (strpos($data["url"], '[') OR strpos($data["url"], ']')) {
 936                 require_once("include/network.php");
 937                 $data["url"] = short_link($data["url"]);
 938         }
 939
 940         if (($data["type"] != "photo") AND is_string($data["title"]))
 941                 $text .= "[bookmark=".$data["url"]."]".trim($data["title"])."[/bookmark]";
 942
 943         if (($data["type"] != "video") AND ($photo != ""))
 944                 $text .= '[img]'.$photo.'[/img]';
 945         elseif (($data["type"] != "video") AND (sizeof($data["images"]) > 0)) {
 946                 $imagedata = $data["images"][0];
 947                 $text .= '[img]'.$imagedata["src"].'[/img]';
 948         }
 949
 950         if (($data["type"] != "photo") AND is_string($data["text"]))
 951                 $text .= "[quote]".$data["text"]."[/quote]";
 952
 953         $hashtags = "";
 954         if (isset($data["keywords"]) AND count($data["keywords"])) {
 955                 $a = get_app();
 956                 $hashtags = "\n";
 957                 foreach ($data["keywords"] AS $keyword) {
 958                         $hashtag = str_replace(array(" ", "+", "/", ".", "#", "'"),
 959                                                 array("","", "", "", "", ""), $keyword);
 960                         $hashtags .= "#[url=".$a->get_baseurl()."/search?tag=".rawurlencode($hashtag)."]".$hashtag."[/url] ";
 961                 }
 962         }
 963
 964         return("\n[class=type-".$data["type"]."]".$text."[/class]".$hashtags);
 965 }
 966
 967 function query_page_info($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
 968         require_once("mod/parse_url.php");
 969
 970         $data = Cache::get("parse_url:".$url);
 971         if (is_null($data)){
 972                 $data = parseurl_getsiteinfo($url, true);
 973                 Cache::set("parse_url:".$url,serialize($data), CACHE_DAY);
 974         } else
 975                 $data = unserialize($data);
 976
 977         if ($photo != "")
 978                 $data["images"][0]["src"] = $photo;
 979
 980         logger('fetch page info for '.$url.' '.print_r($data, true), LOGGER_DEBUG);
 981
 982         if (!$keywords AND isset($data["keywords"]))
 983                 unset($data["keywords"]);
 984
 985         if (($keyword_blacklist != "") AND isset($data["keywords"])) {
 986                 $list = explode(",", $keyword_blacklist);
 987                 foreach ($list AS $keyword) {
 988                         $keyword = trim($keyword);
 989                         $index = array_search($keyword, $data["keywords"]);
 990                         if ($index !== false)
 991                                 unset($data["keywords"][$index]);
 992                 }
 993         }
 994
 995         return($data);
 996 }
 997
 998 function add_page_keywords($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
 999         $data = query_page_info($url, $no_photos, $photo, $keywords, $keyword_blacklist);
1000
1001         $tags = "";
1002         if (isset($data["keywords"]) AND count($data["keywords"])) {
1003                 $a = get_app();
1004                 foreach ($data["keywords"] AS $keyword) {
1005                         $hashtag = str_replace(array(" ", "+", "/", ".", "#", "'"),
1006                                                 array("","", "", "", "", ""), $keyword);
1007
1008                         if ($tags != "")
1009                                 $tags .= ",";
1010
1011                         $tags .= "#[url=".$a->get_baseurl()."/search?tag=".rawurlencode($hashtag)."]".$hashtag."[/url]";
1012                 }
1013         }
1014
1015         return($tags);
1016 }
1017
1018 function add_page_info($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
1019         $data = query_page_info($url, $no_photos, $photo, $keywords, $keyword_blacklist);
1020
1021         $text = add_page_info_data($data);
1022
1023         return($text);
1024 }
1025
1026 function add_page_info_to_body($body, $texturl = false, $no_photos = false) {
1027
1028         logger('add_page_info_to_body: fetch page info for body '.$body, LOGGER_DEBUG);
1029
1030         $URLSearchString = "^\[\]";
1031
1032         // Adding these spaces is a quick hack due to my problems with regular expressions :)
1033         preg_match("/[^!#@]\[url\]([$URLSearchString]*)\[\/url\]/ism", " ".$body, $matches);
1034
1035         if (!$matches)
1036                 preg_match("/[^!#@]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", " ".$body, $matches);
1037
1038         // Convert urls without bbcode elements
1039         if (!$matches AND $texturl) {
1040                 preg_match("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", " ".$body, $matches);
1041
1042                 // Yeah, a hack. I really hate regular expressions :)
1043                 if ($matches)
1044                         $matches[1] = $matches[2];
1045         }
1046
1047         if ($matches)
1048                 $footer = add_page_info($matches[1], $no_photos);
1049
1050         // Remove the link from the body if the link is attached at the end of the post
1051         if (isset($footer) AND (trim($footer) != "") AND (strpos($footer, $matches[1]))) {
1052                 $removedlink = trim(str_replace($matches[1], "", $body));
1053                 if (($removedlink == "") OR strstr($body, $removedlink))
1054                         $body = $removedlink;
1055
1056                 $url = str_replace(array('/', '.'), array('\/', '\.'), $matches[1]);
1057                 $removedlink = preg_replace("/\[url\=".$url."\](.*?)\[\/url\]/ism", '', $body);
1058                 if (($removedlink == "") OR strstr($body, $removedlink))
1059                         $body = $removedlink;
1060         }
1061
1062         // Add the page information to the bottom
1063         if (isset($footer) AND (trim($footer) != ""))
1064                 $body .= $footer;
1065
1066         return $body;
1067 }
1068
1069 function encode_rel_links($links) {
1070         $o = '';
1071         if(! ((is_array($links)) && (count($links))))
1072                 return $o;
1073         foreach($links as $link) {
1074                 $o .= '<link ';
1075                 if($link['attribs']['']['rel'])
1076                         $o .= 'rel="' . $link['attribs']['']['rel'] . '" ';
1077                 if($link['attribs']['']['type'])
1078                         $o .= 'type="' . $link['attribs']['']['type'] . '" ';
1079                 if($link['attribs']['']['href'])
1080                         $o .= 'href="' . $link['attribs']['']['href'] . '" ';
1081                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['width'])
1082                         $o .= 'media:width="' . $link['attribs'][NAMESPACE_MEDIA]['width'] . '" ';
1083                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['height'])
1084                         $o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
1085                 $o .= ' />' . "\n" ;
1086         }
1087         return xmlify($o);
1088 }
1089
1090 function add_guid($item) {
1091         $r = q("SELECT `guid` FROM `guid` WHERE `guid` = '%s' LIMIT 1", dbesc($item["guid"]));
1092         if ($r)
1093                 return;
1094
1095         q("INSERT INTO `guid` (`guid`,`plink`,`uri`,`network`) VALUES ('%s','%s','%s','%s')",
1096                 dbesc($item["guid"]), dbesc($item["plink"]),
1097                 dbesc($item["uri"]), dbesc($item["network"]));
1098 }
1099
1100 // Adds a "lang" specification in a "postopts" element of given $arr,
1101 // if possible and not already present.
1102 // Expects "body" element to exist in $arr.
1103 // TODO: add a parameter to request forcing override
1104 function item_add_language_opt(&$arr) {
1105
1106         if (version_compare(PHP_VERSION, '5.3.0', '<')) return; // LanguageDetect.php not available ?
1107
1108         if ( x($arr, 'postopts') )
1109         {
1110                 if ( strstr($arr['postopts'], 'lang=') )
1111                 {
1112                         // do not override
1113                         // TODO: add parameter to request overriding
1114                         return;
1115                 }
1116                 $postopts = $arr['postopts'];
1117         }
1118         else
1119         {
1120                 $postopts = "";
1121         }
1122
1123         require_once('library/langdet/Text/LanguageDetect.php');
1124         $naked_body = preg_replace('/\[(.+?)\]/','',$arr['body']);
1125         $l = new Text_LanguageDetect;
1126         //$lng = $l->detectConfidence($naked_body);
1127         //$arr['postopts'] = (($lng['language']) ? 'lang=' . $lng['language'] . ';' . $lng['confidence'] : '');
1128         $lng = $l->detect($naked_body, 3);
1129
1130         if (sizeof($lng) > 0) {
1131                 if ($postopts != "") $postopts .= '&'; // arbitrary separator, to be reviewed
1132                 $postopts .= 'lang=';
1133                 $sep = "";
1134                 foreach ($lng as $language => $score) {
1135                         $postopts .= $sep . $language.";".$score;
1136                         $sep = ':';
1137                 }
1138                 $arr['postopts'] = $postopts;
1139         }
1140 }
1141
1142 function item_store($arr,$force_parent = false, $notify = false, $dontcache = false) {
1143
1144         // If it is a posting where users should get notifications, then define it as wall posting
1145         if ($notify) {
1146                 $arr['wall'] = 1;
1147                 $arr['type'] = 'wall';
1148                 $arr['origin'] = 1;
1149                 $arr['last-child'] = 1;
1150                 $arr['network'] = NETWORK_DFRN;
1151         }
1152
1153         // If a Diaspora signature structure was passed in, pull it out of the
1154         // item array and set it aside for later storage.
1155
1156         $dsprsig = null;
1157         if(x($arr,'dsprsig')) {
1158                 $dsprsig = json_decode(base64_decode($arr['dsprsig']));
1159                 unset($arr['dsprsig']);
1160         }
1161
1162         // Converting the plink
1163         if ($arr['network'] == NETWORK_OSTATUS) {
1164                 if (isset($arr['plink']))
1165                         $arr['plink'] = ostatus_convert_href($arr['plink']);
1166                 elseif (isset($arr['uri']))
1167                         $arr['plink'] = ostatus_convert_href($arr['uri']);
1168         }
1169
1170         if(x($arr, 'gravity'))
1171                 $arr['gravity'] = intval($arr['gravity']);
1172         elseif($arr['parent-uri'] === $arr['uri'])
1173                 $arr['gravity'] = 0;
1174         elseif(activity_match($arr['verb'],ACTIVITY_POST))
1175                 $arr['gravity'] = 6;
1176         else
1177                 $arr['gravity'] = 6;   // extensible catchall
1178
1179         if(! x($arr,'type'))
1180                 $arr['type']      = 'remote';
1181
1182
1183
1184         /* check for create  date and expire time */
1185         $uid = intval($arr['uid']);
1186         $r = q("SELECT expire FROM user WHERE uid = %d", intval($uid));
1187         if(count($r)) {
1188                 $expire_interval = $r[0]['expire'];
1189                 if ($expire_interval>0) {
1190                         $expire_date =  new DateTime( '- '.$expire_interval.' days', new DateTimeZone('UTC'));
1191                         $created_date = new DateTime($arr['created'], new DateTimeZone('UTC'));
1192                         if ($created_date < $expire_date) {
1193                                 logger('item-store: item created ('.$arr['created'].') before expiration time ('.$expire_date->format(DateTime::W3C).'). ignored. ' . print_r($arr,true), LOGGER_DEBUG);
1194                                 return 0;
1195                         }
1196                 }
1197         }
1198
1199         // If there is no guid then take the same guid that was taken before for the same uri
1200         if ((trim($arr['guid']) == "") AND (trim($arr['uri']) != "") AND (trim($arr['network']) != "")) {
1201                 logger('item_store: checking for an existing guid for uri '.$arr['uri'], LOGGER_DEBUG);
1202                 $r = q("SELECT `guid` FROM `guid` WHERE `uri` = '%s' AND `network` = '%s' LIMIT 1",
1203                         dbesc(trim($arr['uri'])), dbesc(trim($arr['network'])));
1204
1205                 if(count($r)) {
1206                         $arr['guid'] = $r[0]["guid"];
1207                         logger('item_store: found guid '.$arr['guid'].' for uri '.$arr['uri'], LOGGER_DEBUG);
1208                 }
1209         }
1210
1211         // If there is no guid then take the same guid that was taken before for the same plink
1212         if ((trim($arr['guid']) == "") AND (trim($arr['plink']) != "") AND (trim($arr['network']) != "")) {
1213                 logger('item_store: checking for an existing guid for plink '.$arr['plink'], LOGGER_DEBUG);
1214                 $r = q("SELECT `guid`, `uri` FROM `guid` WHERE `plink` = '%s' AND `network` = '%s' LIMIT 1",
1215                         dbesc(trim($arr['plink'])), dbesc(trim($arr['network'])));
1216
1217                 if(count($r)) {
1218                         $arr['guid'] = $r[0]["guid"];
1219                         logger('item_store: found guid '.$arr['guid'].' for plink '.$arr['plink'], LOGGER_DEBUG);
1220
1221                         if ($r[0]["uri"] != $arr['uri'])
1222                         logger('Different uri for same guid: '.$arr['uri'].' and '.$r[0]["uri"].' - this shouldnt happen!', LOGGER_DEBUG);
1223                 }
1224         }
1225
1226         // Shouldn't happen but we want to make absolutely sure it doesn't leak from a plugin.
1227         // Deactivated, since the bbcode parser can handle with it - and it destroys posts with some smileys that contain "<"
1228         //if((strpos($arr['body'],'<') !== false) || (strpos($arr['body'],'>') !== false))
1229         //      $arr['body'] = strip_tags($arr['body']);
1230
1231         item_add_language_opt($arr);
1232
1233         if ($notify)
1234                 $guid_prefix = "";
1235         else
1236                 $guid_prefix = $arr['network'];
1237
1238         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
1239         $arr['guid']          = ((x($arr,'guid'))          ? notags(trim($arr['guid']))          : get_guid(32, $guid_prefix));
1240         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : $arr['guid']);
1241         $arr['extid']         = ((x($arr,'extid'))         ? notags(trim($arr['extid']))         : '');
1242         $arr['author-name']   = ((x($arr,'author-name'))   ? trim($arr['author-name'])   : '');
1243         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
1244         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
1245         $arr['owner-name']    = ((x($arr,'owner-name'))    ? trim($arr['owner-name'])    : '');
1246         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
1247         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
1248         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
1249         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
1250         $arr['commented']     = ((x($arr,'commented')  !== false) ? datetime_convert('UTC','UTC',$arr['commented'])  : datetime_convert());
1251         $arr['received']      = ((x($arr,'received')  !== false) ? datetime_convert('UTC','UTC',$arr['received'])  : datetime_convert());
1252         $arr['changed']       = ((x($arr,'changed')  !== false) ? datetime_convert('UTC','UTC',$arr['changed'])  : datetime_convert());
1253         $arr['title']         = ((x($arr,'title'))         ? trim($arr['title'])         : '');
1254         $arr['location']      = ((x($arr,'location'))      ? trim($arr['location'])      : '');
1255         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
1256         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
1257         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
1258         $arr['deleted']       = 0;
1259         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : '');
1260         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
1261         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
1262         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
1263         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
1264         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
1265         $arr['plink']         = ((x($arr,'plink'))         ? notags(trim($arr['plink']))         : '');
1266         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
1267         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
1268         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
1269         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
1270         $arr['private']       = ((x($arr,'private'))       ? intval($arr['private'])             : 0 );
1271         $arr['bookmark']      = ((x($arr,'bookmark'))      ? intval($arr['bookmark'])            : 0 );
1272         $arr['body']          = ((x($arr,'body'))          ? trim($arr['body'])                  : '');
1273         $arr['tag']           = ((x($arr,'tag'))           ? notags(trim($arr['tag']))           : '');
1274         $arr['attach']        = ((x($arr,'attach'))        ? notags(trim($arr['attach']))        : '');
1275         $arr['app']           = ((x($arr,'app'))           ? notags(trim($arr['app']))           : '');
1276         $arr['origin']        = ((x($arr,'origin'))        ? intval($arr['origin'])              : 0 );
1277         $arr['network']       = ((x($arr,'network'))       ? trim($arr['network'])               : '');
1278         $arr['postopts']      = ((x($arr,'postopts'))      ? trim($arr['postopts'])              : '');
1279         $arr['resource-id']   = ((x($arr,'resource-id'))   ? trim($arr['resource-id'])           : '');
1280         $arr['event-id']      = ((x($arr,'event-id'))      ? intval($arr['event-id'])            : 0 );
1281         $arr['inform']        = ((x($arr,'inform'))        ? trim($arr['inform'])                : '');
1282         $arr['file']          = ((x($arr,'file'))          ? trim($arr['file'])                  : '');
1283
1284         if ($arr['plink'] == "") {
1285                 $a = get_app();
1286                 $arr['plink'] = $a->get_baseurl().'/display/'.urlencode($arr['guid']);
1287         }
1288
1289         if ($arr['network'] == "") {
1290                 $r = q("SELECT `network` FROM `contact` WHERE `network` IN ('%s', '%s', '%s') AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
1291                         dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS),
1292                         dbesc(normalise_link($arr['author-link'])),
1293                         intval($arr['uid'])
1294                 );
1295
1296                 if(!count($r))
1297                         $r = q("SELECT `network` FROM `gcontact` WHERE `network` IN ('%s', '%s', '%s') AND `nurl` = '%s' LIMIT 1",
1298                                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS),
1299                                 dbesc(normalise_link($arr['author-link']))
1300                         );
1301
1302                 if(!count($r))
1303                         $r = q("SELECT `network` FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
1304                                 intval($arr['contact-id']),
1305                                 intval($arr['uid'])
1306                         );
1307
1308                 if(count($r))
1309                         $arr['network'] = $r[0]["network"];
1310
1311                 // Fallback to friendica (why is it empty in some cases?)
1312                 if ($arr['network'] == "")
1313                         $arr['network'] = NETWORK_DFRN;
1314
1315                 logger("item_store: Set network to ".$arr["network"]." for ".$arr["uri"], LOGGER_DEBUG);
1316         }
1317
1318         if ($arr['guid'] != "") {
1319                 // Checking if there is already an item with the same guid
1320                 logger('checking for an item for user '.$arr['uid'].' on network '.$arr['network'].' with the guid '.$arr['guid'], LOGGER_DEBUG);
1321                 $r = q("SELECT `guid` FROM `item` WHERE `guid` = '%s' AND `network` = '%s' AND `uid` = '%d' LIMIT 1",
1322                         dbesc($arr['guid']), dbesc($arr['network']), intval($arr['uid']));
1323
1324                 if(count($r)) {
1325                         logger('found item with guid '.$arr['guid'].' for user '.$arr['uid'].' on network '.$arr['network'], LOGGER_DEBUG);
1326                         return 0;
1327                 }
1328         }
1329
1330         // Check for hashtags in the body and repair or add hashtag links
1331         item_body_set_hashtags($arr);
1332
1333         $arr['thr-parent'] = $arr['parent-uri'];
1334         if($arr['parent-uri'] === $arr['uri']) {
1335                 $parent_id = 0;
1336                 $parent_deleted = 0;
1337                 $allow_cid = $arr['allow_cid'];
1338                 $allow_gid = $arr['allow_gid'];
1339                 $deny_cid  = $arr['deny_cid'];
1340                 $deny_gid  = $arr['deny_gid'];
1341                 $notify_type = 'wall-new';
1342         }
1343         else {
1344
1345                 // find the parent and snarf the item id and ACLs
1346                 // and anything else we need to inherit
1347
1348                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d ORDER BY `id` ASC LIMIT 1",
1349                         dbesc($arr['parent-uri']),
1350                         intval($arr['uid'])
1351                 );
1352
1353                 if(count($r)) {
1354
1355                         // is the new message multi-level threaded?
1356                         // even though we don't support it now, preserve the info
1357                         // and re-attach to the conversation parent.
1358
1359                         if($r[0]['uri'] != $r[0]['parent-uri']) {
1360                                 $arr['parent-uri'] = $r[0]['parent-uri'];
1361                                 $z = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `parent-uri` = '%s' AND `uid` = %d
1362                                         ORDER BY `id` ASC LIMIT 1",
1363                                         dbesc($r[0]['parent-uri']),
1364                                         dbesc($r[0]['parent-uri']),
1365                                         intval($arr['uid'])
1366                                 );
1367                                 if($z && count($z))
1368                                         $r = $z;
1369                         }
1370
1371                         $parent_id      = $r[0]['id'];
1372                         $parent_deleted = $r[0]['deleted'];
1373                         $allow_cid      = $r[0]['allow_cid'];
1374                         $allow_gid      = $r[0]['allow_gid'];
1375                         $deny_cid       = $r[0]['deny_cid'];
1376                         $deny_gid       = $r[0]['deny_gid'];
1377                         $arr['wall']    = $r[0]['wall'];
1378                         $notify_type    = 'comment-new';
1379
1380                         // if the parent is private, force privacy for the entire conversation
1381                         // This differs from the above settings as it subtly allows comments from
1382                         // email correspondents to be private even if the overall thread is not.
1383
1384                         if($r[0]['private'])
1385                                 $arr['private'] = $r[0]['private'];
1386
1387                         // Edge case. We host a public forum that was originally posted to privately.
1388                         // The original author commented, but as this is a comment, the permissions
1389                         // weren't fixed up so it will still show the comment as private unless we fix it here.
1390
1391                         if((intval($r[0]['forum_mode']) == 1) && (! $r[0]['private']))
1392                                 $arr['private'] = 0;
1393
1394
1395                         // If its a post from myself then tag the thread as "mention"
1396                         logger("item_store: Checking if parent ".$parent_id." has to be tagged as mention for user ".$arr['uid'], LOGGER_DEBUG);
1397                         $u = q("select * from user where uid = %d limit 1", intval($arr['uid']));
1398                         if(count($u)) {
1399                                 $a = get_app();
1400                                 $self = normalise_link($a->get_baseurl() . '/profile/' . $u[0]['nickname']);
1401                                 logger("item_store: 'myself' is ".$self." for parent ".$parent_id." checking against ".$arr['author-link']." and ".$arr['owner-link'], LOGGER_DEBUG);
1402                                 if ((normalise_link($arr['author-link']) == $self) OR (normalise_link($arr['owner-link']) == $self)) {
1403                                         q("UPDATE `thread` SET `mention` = 1 WHERE `iid` = %d", intval($parent_id));
1404                                         logger("item_store: tagged thread ".$parent_id." as mention for user ".$self, LOGGER_DEBUG);
1405                                 }
1406                         }
1407                 }
1408                 else {
1409
1410                         // Allow one to see reply tweets from status.net even when
1411                         // we don't have or can't see the original post.
1412
1413                         if($force_parent) {
1414                                 logger('item_store: $force_parent=true, reply converted to top-level post.');
1415                                 $parent_id = 0;
1416                                 $arr['parent-uri'] = $arr['uri'];
1417                                 $arr['gravity'] = 0;
1418                         }
1419                         else {
1420                                 logger('item_store: item parent '.$arr['parent-uri'].' for '.$arr['uid'].' was not found - ignoring item');
1421                                 return 0;
1422                         }
1423
1424                         $parent_deleted = 0;
1425                 }
1426         }
1427
1428         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `network` = '%s' AND `uid` = %d LIMIT 1",
1429                 dbesc($arr['uri']),
1430                 dbesc($arr['network']),
1431                 intval($arr['uid'])
1432         );
1433         if($r && count($r)) {
1434                 logger('duplicated item with the same uri found. ' . print_r($arr,true));
1435                 return 0;
1436         }
1437
1438         // Check for an existing post with the same content. There seems to be a problem with OStatus.
1439         $r = q("SELECT `id` FROM `item` WHERE `body` = '%s' AND `network` = '%s' AND `created` = '%s' AND `contact-id` = %d AND `uid` = %d LIMIT 1",
1440                 dbesc($arr['body']),
1441                 dbesc($arr['network']),
1442                 dbesc($arr['created']),
1443                 intval($arr['contact-id']),
1444                 intval($arr['uid'])
1445         );
1446         if($r && count($r)) {
1447                 logger('duplicated item with the same body found. ' . print_r($arr,true));
1448                 return 0;
1449         }
1450
1451         // Is this item available in the global items (with uid=0)?
1452         if ($arr["uid"] == 0) {
1453                 $arr["global"] = true;
1454
1455                 q("UPDATE `item` SET `global` = 1 WHERE `guid` = '%s'", dbesc($arr["guid"]));
1456         }  else {
1457                 $isglobal = q("SELECT `global` FROM `item` WHERE `uid` = 0 AND `guid` = '%s'", dbesc($arr["guid"]));
1458
1459                 $arr["global"] = (count($isglobal) > 0);
1460         }
1461
1462         // Fill the cache field
1463         put_item_in_cache($arr);
1464
1465         if ($notify)
1466                 call_hooks('post_local',$arr);
1467         else
1468                 call_hooks('post_remote',$arr);
1469
1470         if(x($arr,'cancel')) {
1471                 logger('item_store: post cancelled by plugin.');
1472                 return 0;
1473         }
1474
1475         // Store the unescaped version
1476         $unescaped = $arr;
1477
1478         dbesc_array($arr);
1479
1480         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
1481
1482         $r = dbq("INSERT INTO `item` (`"
1483                         . implode("`, `", array_keys($arr))
1484                         . "`) VALUES ('"
1485                         . implode("', '", array_values($arr))
1486                         . "')" );
1487
1488         // And restore it
1489         $arr = $unescaped;
1490
1491         // find the item we just created
1492         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `network` = '%s' ORDER BY `id` ASC ",
1493                 dbesc($arr['uri']),
1494                 intval($arr['uid']),
1495                 dbesc($arr['network'])
1496         );
1497
1498         if(count($r)) {
1499
1500                 // Store the guid and other relevant data
1501                 add_guid($arr);
1502
1503                 $current_post = $r[0]['id'];
1504                 logger('item_store: created item ' . $current_post);
1505
1506                 // Set "success_update" and "last-item" to the date of the last time we heard from this contact
1507                 // This can be used to filter for inactive contacts.
1508                 // Only do this for public postings to avoid privacy problems, since poco data is public.
1509                 // Don't set this value if it isn't from the owner (could be an author that we don't know)
1510
1511                 $update = (!$arr['private'] AND (($arr["author-link"] === $arr["owner-link"]) OR ($arr["parent-uri"] === $arr["uri"])));
1512
1513                 // Is it a forum? Then we don't care about the rules from above
1514                 if (!$update AND ($arr["network"] == NETWORK_DFRN) AND ($arr["parent-uri"] === $arr["uri"])) {
1515                         $isforum = q("SELECT `forum` FROM `contact` WHERE `id` = %d AND `forum`",
1516                                         intval($arr['contact-id']));
1517                         if ($isforum)
1518                                 $update = true;
1519                 }
1520
1521                 if ($update)
1522                         q("UPDATE `contact` SET `success_update` = '%s', `last-item` = '%s' WHERE `id` = %d",
1523                                 dbesc($arr['received']),
1524                                 dbesc($arr['received']),
1525                                 intval($arr['contact-id'])
1526                         );
1527         } else {
1528                 logger('item_store: could not locate created item');
1529                 return 0;
1530         }
1531         if(count($r) > 1) {
1532                 logger('item_store: duplicated post occurred. Removing duplicates. uri = '.$arr['uri'].' uid = '.$arr['uid']);
1533                 q("DELETE FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `id` != %d ",
1534                         dbesc($arr['uri']),
1535                         intval($arr['uid']),
1536                         intval($current_post)
1537                 );
1538         }
1539
1540         if((! $parent_id) || ($arr['parent-uri'] === $arr['uri']))
1541                 $parent_id = $current_post;
1542
1543         if(strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid))
1544                 $private = 1;
1545         else
1546                 $private = $arr['private'];
1547
1548         // Set parent id - and also make sure to inherit the parent's ACLs.
1549
1550         $r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
1551                 `deny_cid` = '%s', `deny_gid` = '%s', `private` = %d, `deleted` = %d WHERE `id` = %d",
1552                 intval($parent_id),
1553                 dbesc($allow_cid),
1554                 dbesc($allow_gid),
1555                 dbesc($deny_cid),
1556                 dbesc($deny_gid),
1557                 intval($private),
1558                 intval($parent_deleted),
1559                 intval($current_post)
1560         );
1561
1562         $arr['id'] = $current_post;
1563         $arr['parent'] = $parent_id;
1564         $arr['allow_cid'] = $allow_cid;
1565         $arr['allow_gid'] = $allow_gid;
1566         $arr['deny_cid'] = $deny_cid;
1567         $arr['deny_gid'] = $deny_gid;
1568         $arr['private'] = $private;
1569         $arr['deleted'] = $parent_deleted;
1570
1571         // update the commented timestamp on the parent
1572         // Only update "commented" if it is really a comment
1573         if (($arr['verb'] == ACTIVITY_POST) OR !get_config("system", "like_no_comment"))
1574                 q("UPDATE `item` SET `commented` = '%s', `changed` = '%s' WHERE `id` = %d",
1575                         dbesc(datetime_convert()),
1576                         dbesc(datetime_convert()),
1577                         intval($parent_id)
1578                 );
1579         else
1580                 q("UPDATE `item` SET `changed` = '%s' WHERE `id` = %d",
1581                         dbesc(datetime_convert()),
1582                         intval($parent_id)
1583                 );
1584
1585         if($dsprsig) {
1586                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
1587                         intval($current_post),
1588                         dbesc($dsprsig->signed_text),
1589                         dbesc($dsprsig->signature),
1590                         dbesc($dsprsig->signer)
1591                 );
1592         }
1593
1594
1595         /**
1596          * If this is now the last-child, force all _other_ children of this parent to *not* be last-child
1597          */
1598
1599         if($arr['last-child']) {
1600                 $r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d",
1601                         dbesc($arr['uri']),
1602                         intval($arr['uid']),
1603                         intval($current_post)
1604                 );
1605         }
1606
1607         $deleted = tag_deliver($arr['uid'],$current_post);
1608
1609         // current post can be deleted if is for a community page and no mention are
1610         // in it.
1611         if (!$deleted AND !$dontcache) {
1612
1613                 $r = q('SELECT * FROM `item` WHERE id = %d', intval($current_post));
1614                 if (count($r) == 1) {
1615                         if ($notify)
1616                                 call_hooks('post_local_end', $r[0]);
1617                         else
1618                                 call_hooks('post_remote_end', $r[0]);
1619                 } else
1620                         logger('item_store: new item not found in DB, id ' . $current_post);
1621         }
1622
1623         // Add every contact of the post to the global contact table
1624         poco_store($arr);
1625
1626         create_tags_from_item($current_post);
1627         create_files_from_item($current_post);
1628
1629         // Only check for notifications on start posts
1630         if ($arr['parent-uri'] === $arr['uri']) {
1631                 add_thread($current_post);
1632                 logger('item_store: Check notification for contact '.$arr['contact-id'].' and post '.$current_post, LOGGER_DEBUG);
1633
1634                 // Send a notification for every new post?
1635                 $r = q("SELECT `notify_new_posts` FROM `contact` WHERE `id` = %d AND `uid` = %d AND `notify_new_posts` LIMIT 1",
1636                         intval($arr['contact-id']),
1637                         intval($arr['uid'])
1638                 );
1639                 $send_notification = count($r);
1640
1641                 if (!$send_notification) {
1642                         $tags = q("SELECT `url` FROM `term` WHERE `otype` = %d AND `oid` = %d AND `type` = %d AND `uid` = %d",
1643                                 intval(TERM_OBJ_POST), intval($current_post), intval(TERM_MENTION), intval($arr['uid']));
1644
1645                         if (count($tags)) {
1646                                 foreach ($tags AS $tag) {
1647                                         $r = q("SELECT `id` FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d AND `notify_new_posts`",
1648                                                 normalise_link($tag["url"]), intval($arr['uid']));
1649                                         if (count($r))
1650                                                 $send_notification = true;
1651                                 }
1652                         }
1653                 }
1654
1655                 if ($send_notification) {
1656                         logger('item_store: Send notification for contact '.$arr['contact-id'].' and post '.$current_post, LOGGER_DEBUG);
1657                         $u = q("SELECT * FROM user WHERE uid = %d LIMIT 1",
1658                                 intval($arr['uid']));
1659
1660                         $item = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d",
1661                                 intval($current_post),
1662                                 intval($arr['uid'])
1663                         );
1664
1665                         $a = get_app();
1666
1667                         require_once('include/enotify.php');
1668                         notification(array(
1669                                 'type'         => NOTIFY_SHARE,
1670                                 'notify_flags' => $u[0]['notify-flags'],
1671                                 'language'     => $u[0]['language'],
1672                                 'to_name'      => $u[0]['username'],
1673                                 'to_email'     => $u[0]['email'],
1674                                 'uid'          => $u[0]['uid'],
1675                                 'item'         => $item[0],
1676                                 'link'         => $a->get_baseurl().'/display/'.urlencode($arr['guid']),
1677                                 'source_name'  => $item[0]['author-name'],
1678                                 'source_link'  => $item[0]['author-link'],
1679                                 'source_photo' => $item[0]['author-avatar'],
1680                                 'verb'         => ACTIVITY_TAG,
1681                                 'otype'        => 'item',
1682                                 'parent'       => $arr['parent']
1683                         ));
1684                         logger('item_store: Notification sent for contact '.$arr['contact-id'].' and post '.$current_post, LOGGER_DEBUG);
1685                 }
1686         } else {
1687                 update_thread($parent_id);
1688                 add_shadow_entry($arr);
1689         }
1690
1691         if ($notify)
1692                 proc_run('php', "include/notifier.php", $notify_type, $current_post);
1693
1694         return $current_post;
1695 }
1696
1697 function item_body_set_hashtags(&$item) {
1698
1699         $tags = get_tags($item["body"]);
1700
1701         // No hashtags?
1702         if(!count($tags))
1703                 return(false);
1704
1705         // This sorting is important when there are hashtags that are part of other hashtags
1706         // Otherwise there could be problems with hashtags like #test and #test2
1707         rsort($tags);
1708
1709         $a = get_app();
1710
1711         $URLSearchString = "^\[\]";
1712
1713         // All hashtags should point to the home server
1714         //$item["body"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1715         //              "#[url=".$a->get_baseurl()."/search?tag=$2]$2[/url]", $item["body"]);
1716
1717         //$item["tag"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1718         //              "#[url=".$a->get_baseurl()."/search?tag=$2]$2[/url]", $item["tag"]);
1719
1720         // mask hashtags inside of url, bookmarks and attachments to avoid urls in urls
1721         $item["body"] = preg_replace_callback("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1722                 function ($match){
1723                         return("[url=".str_replace("#", "&num;", $match[1])."]".str_replace("#", "&num;", $match[2])."[/url]");
1724                 },$item["body"]);
1725
1726         $item["body"] = preg_replace_callback("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism",
1727                 function ($match){
1728                         return("[bookmark=".str_replace("#", "&num;", $match[1])."]".str_replace("#", "&num;", $match[2])."[/bookmark]");
1729                 },$item["body"]);
1730
1731         $item["body"] = preg_replace_callback("/\[attachment (.*)\](.*?)\[\/attachment\]/ism",
1732                 function ($match){
1733                         return("[attachment ".str_replace("#", "&num;", $match[1])."]".$match[2]."[/attachment]");
1734                 },$item["body"]);
1735
1736         // Repair recursive urls
1737         $item["body"] = preg_replace("/&num;\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1738                         "&num;$2", $item["body"]);
1739
1740
1741         foreach($tags as $tag) {
1742                 if(strpos($tag,'#') !== 0)
1743                         continue;
1744
1745                 if(strpos($tag,'[url='))
1746                         continue;
1747
1748                 $basetag = str_replace('_',' ',substr($tag,1));
1749
1750                 $newtag = '#[url='.$a->get_baseurl().'/search?tag='.rawurlencode($basetag).']'.$basetag.'[/url]';
1751
1752                 $item["body"] = str_replace($tag, $newtag, $item["body"]);
1753
1754                 if(!stristr($item["tag"],"/search?tag=".$basetag."]".$basetag."[/url]")) {
1755                         if(strlen($item["tag"]))
1756                                 $item["tag"] = ','.$item["tag"];
1757                         $item["tag"] = $newtag.$item["tag"];
1758                 }
1759         }
1760
1761         // Convert back the masked hashtags
1762         $item["body"] = str_replace("&num;", "#", $item["body"]);
1763 }
1764
1765 function get_item_guid($id) {
1766         $r = q("SELECT `guid` FROM `item` WHERE `id` = %d LIMIT 1", intval($id));
1767         if (count($r))
1768                 return($r[0]["guid"]);
1769         else
1770                 return("");
1771 }
1772
1773 function get_item_id($guid, $uid = 0) {
1774
1775         $nick = "";
1776         $id = 0;
1777
1778         if ($uid == 0)
1779                 $uid == local_user();
1780
1781         // Does the given user have this item?
1782         if ($uid) {
1783                 $r = q("SELECT `item`.`id`, `user`.`nickname` FROM `item` INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1784                         WHERE `item`.`visible` = 1 AND `item`.`deleted` = 0 and `item`.`moderated` = 0
1785                                 AND `item`.`guid` = '%s' AND `item`.`uid` = %d", dbesc($guid), intval($uid));
1786                 if (count($r)) {
1787                         $id = $r[0]["id"];
1788                         $nick = $r[0]["nickname"];
1789                 }
1790         }
1791
1792         // Or is it anywhere on the server?
1793         if ($nick == "") {
1794                 $r = q("SELECT `item`.`id`, `user`.`nickname` FROM `item` INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1795                         WHERE `item`.`visible` = 1 AND `item`.`deleted` = 0 and `item`.`moderated` = 0
1796                                 AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
1797                                 AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
1798                                 AND `item`.`private` = 0 AND `item`.`wall` = 1
1799                                 AND `item`.`guid` = '%s'", dbesc($guid));
1800                 if (count($r)) {
1801                         $id = $r[0]["id"];
1802                         $nick = $r[0]["nickname"];
1803                 }
1804         }
1805         return(array("nick" => $nick, "id" => $id));
1806 }
1807
1808 // return - test
1809 function get_item_contact($item,$contacts) {
1810         if(! count($contacts) || (! is_array($item)))
1811                 return false;
1812         foreach($contacts as $contact) {
1813                 if($contact['id'] == $item['contact-id']) {
1814                         return $contact;
1815                         break; // NOTREACHED
1816                 }
1817         }
1818         return false;
1819 }
1820
1821 /**
1822  * look for mention tags and setup a second delivery chain for forum/community posts if appropriate
1823  * @param int $uid
1824  * @param int $item_id
1825  * @return bool true if item was deleted, else false
1826  */
1827 function tag_deliver($uid,$item_id) {
1828
1829         //
1830
1831         $a = get_app();
1832
1833         $mention = false;
1834
1835         $u = q("select * from user where uid = %d limit 1",
1836                 intval($uid)
1837         );
1838         if(! count($u))
1839                 return;
1840
1841         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1842         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1843
1844
1845         $i = q("select * from item where id = %d and uid = %d limit 1",
1846                 intval($item_id),
1847                 intval($uid)
1848         );
1849         if(! count($i))
1850                 return;
1851
1852         $item = $i[0];
1853
1854         $link = normalise_link($a->get_baseurl() . '/profile/' . $u[0]['nickname']);
1855
1856         // Diaspora uses their own hardwired link URL in @-tags
1857         // instead of the one we supply with webfinger
1858
1859         $dlink = normalise_link($a->get_baseurl() . '/u/' . $u[0]['nickname']);
1860
1861         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1862         if($cnt) {
1863                 foreach($matches as $mtch) {
1864                         if(link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
1865                                 $mention = true;
1866                                 logger('tag_deliver: mention found: ' . $mtch[2]);
1867                         }
1868                 }
1869         }
1870
1871         if(! $mention){
1872                 if ( ($community_page || $prvgroup) &&
1873                           (!$item['wall']) && (!$item['origin']) && ($item['id'] == $item['parent'])){
1874                         // mmh.. no mention.. community page or private group... no wall.. no origin.. top-post (not a comment)
1875                         // delete it!
1876                         logger("tag_deliver: no-mention top-level post to communuty or private group. delete.");
1877                         q("DELETE FROM item WHERE id = %d and uid = %d",
1878                                 intval($item_id),
1879                                 intval($uid)
1880                         );
1881                         return true;
1882                 }
1883                 return;
1884         }
1885
1886
1887         // send a notification
1888
1889         // use a local photo if we have one
1890
1891         $r = q("select * from contact where uid = %d and nurl = '%s' limit 1",
1892                 intval($u[0]['uid']),
1893                 dbesc(normalise_link($item['author-link']))
1894         );
1895         $photo = (($r && count($r)) ? $r[0]['thumb'] : $item['author-avatar']);
1896
1897
1898         require_once('include/enotify.php');
1899         notification(array(
1900                 'type'         => NOTIFY_TAGSELF,
1901                 'notify_flags' => $u[0]['notify-flags'],
1902                 'language'     => $u[0]['language'],
1903                 'to_name'      => $u[0]['username'],
1904                 'to_email'     => $u[0]['email'],
1905                 'uid'          => $u[0]['uid'],
1906                 'item'         => $item,
1907                 'link'         => $a->get_baseurl() . '/display/'.urlencode(get_item_guid($item['id'])),
1908                 'source_name'  => $item['author-name'],
1909                 'source_link'  => $item['author-link'],
1910                 'source_photo' => $photo,
1911                 'verb'         => ACTIVITY_TAG,
1912                 'otype'        => 'item',
1913                 'parent'       => $item['parent']
1914         ));
1915
1916
1917         $arr = array('item' => $item, 'user' => $u[0], 'contact' => $r[0]);
1918
1919         call_hooks('tagged', $arr);
1920
1921         if((! $community_page) && (! $prvgroup))
1922                 return;
1923
1924
1925         // tgroup delivery - setup a second delivery chain
1926         // prevent delivery looping - only proceed
1927         // if the message originated elsewhere and is a top-level post
1928
1929         if(($item['wall']) || ($item['origin']) || ($item['id'] != $item['parent']))
1930                 return;
1931
1932         // now change this copy of the post to a forum head message and deliver to all the tgroup members
1933
1934
1935         $c = q("select name, url, thumb from contact where self = 1 and uid = %d limit 1",
1936                 intval($u[0]['uid'])
1937         );
1938         if(! count($c))
1939                 return;
1940
1941         // also reset all the privacy bits to the forum default permissions
1942
1943         $private = ($u[0]['allow_cid'] || $u[0]['allow_gid'] || $u[0]['deny_cid'] || $u[0]['deny_gid']) ? 1 : 0;
1944
1945         $forum_mode = (($prvgroup) ? 2 : 1);
1946
1947         q("update item set wall = 1, origin = 1, forum_mode = %d, `owner-name` = '%s', `owner-link` = '%s', `owner-avatar` = '%s',
1948                 `private` = %d, `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s'  where id = %d",
1949                 intval($forum_mode),
1950                 dbesc($c[0]['name']),
1951                 dbesc($c[0]['url']),
1952                 dbesc($c[0]['thumb']),
1953                 intval($private),
1954                 dbesc($u[0]['allow_cid']),
1955                 dbesc($u[0]['allow_gid']),
1956                 dbesc($u[0]['deny_cid']),
1957                 dbesc($u[0]['deny_gid']),
1958                 intval($item_id)
1959         );
1960         update_thread($item_id);
1961
1962         proc_run('php','include/notifier.php','tgroup',$item_id);
1963
1964 }
1965
1966
1967
1968 function tgroup_check($uid,$item) {
1969
1970         $a = get_app();
1971
1972         $mention = false;
1973
1974         // check that the message originated elsewhere and is a top-level post
1975
1976         if(($item['wall']) || ($item['origin']) || ($item['uri'] != $item['parent-uri']))
1977                 return false;
1978
1979
1980         $u = q("select * from user where uid = %d limit 1",
1981                 intval($uid)
1982         );
1983         if(! count($u))
1984                 return false;
1985
1986         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1987         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1988
1989
1990         $link = normalise_link($a->get_baseurl() . '/profile/' . $u[0]['nickname']);
1991
1992         // Diaspora uses their own hardwired link URL in @-tags
1993         // instead of the one we supply with webfinger
1994
1995         $dlink = normalise_link($a->get_baseurl() . '/u/' . $u[0]['nickname']);
1996
1997         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1998         if($cnt) {
1999                 foreach($matches as $mtch) {
2000                         if(link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
2001                                 $mention = true;
2002                                 logger('tgroup_check: mention found: ' . $mtch[2]);
2003                         }
2004                 }
2005         }
2006
2007         if(! $mention)
2008                 return false;
2009
2010         if((! $community_page) && (! $prvgroup))
2011                 return false;
2012
2013
2014
2015         return true;
2016
2017 }
2018
2019
2020
2021
2022
2023
2024 function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
2025
2026         $a = get_app();
2027
2028         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
2029
2030         if($contact['duplex'] && $contact['dfrn-id'])
2031                 $idtosend = '0:' . $orig_id;
2032         if($contact['duplex'] && $contact['issued-id'])
2033                 $idtosend = '1:' . $orig_id;
2034
2035
2036         $rino = get_config('system','rino_encrypt');
2037         $rino = intval($rino);
2038         // use RINO1 if mcrypt isn't installed and RINO2 was selected
2039         if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
2040
2041         logger("Local rino version: ". $rino, LOGGER_DEBUG);
2042
2043         $ssl_val = intval(get_config('system','ssl_policy'));
2044         $ssl_policy = '';
2045
2046         switch($ssl_val){
2047                 case SSL_POLICY_FULL:
2048                         $ssl_policy = 'full';
2049                         break;
2050                 case SSL_POLICY_SELFSIGN:
2051                         $ssl_policy = 'self';
2052                         break;
2053                 case SSL_POLICY_NONE:
2054                 default:
2055                         $ssl_policy = 'none';
2056                         break;
2057         }
2058
2059         $url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino='.$rino : '');
2060
2061         logger('dfrn_deliver: ' . $url);
2062
2063         $xml = fetch_url($url);
2064
2065         $curl_stat = $a->get_curl_code();
2066         if(! $curl_stat)
2067                 return(-1); // timed out
2068
2069         logger('dfrn_deliver: ' . $xml, LOGGER_DATA);
2070
2071         if(! $xml)
2072                 return 3;
2073
2074         if(strpos($xml,'<?xml') === false) {
2075                 logger('dfrn_deliver: no valid XML returned');
2076                 logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA);
2077                 return 3;
2078         }
2079
2080         $res = parse_xml_string($xml);
2081
2082         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
2083                 return (($res->status) ? $res->status : 3);
2084
2085         $postvars     = array();
2086         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
2087         $challenge    = hex2bin((string) $res->challenge);
2088         $perm         = (($res->perm) ? $res->perm : null);
2089         $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0);
2090         $rino_remote_version = intval($res->rino);
2091         $page         = (($owner['page-flags'] == PAGE_COMMUNITY) ? 1 : 0);
2092
2093         logger("Remote rino version: ".$rino_remote_version." for ".$contact["url"], LOGGER_DEBUG);
2094
2095         if($owner['page-flags'] == PAGE_PRVGROUP)
2096                 $page = 2;
2097
2098         $final_dfrn_id = '';
2099
2100         if($perm) {
2101                 if((($perm == 'rw') && (! intval($contact['writable'])))
2102                 || (($perm == 'r') && (intval($contact['writable'])))) {
2103                         q("update contact set writable = %d where id = %d",
2104                                 intval(($perm == 'rw') ? 1 : 0),
2105                                 intval($contact['id'])
2106                         );
2107                         $contact['writable'] = (string) 1 - intval($contact['writable']);
2108                 }
2109         }
2110
2111         if(($contact['duplex'] && strlen($contact['pubkey']))
2112                 || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey']))
2113                 || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) {
2114                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
2115                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
2116         }
2117         else {
2118                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
2119                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
2120         }
2121
2122         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
2123
2124         if(strpos($final_dfrn_id,':') == 1)
2125                 $final_dfrn_id = substr($final_dfrn_id,2);
2126
2127         if($final_dfrn_id != $orig_id) {
2128                 logger('dfrn_deliver: wrong dfrn_id.');
2129                 // did not decode properly - cannot trust this site
2130                 return 3;
2131         }
2132
2133         $postvars['dfrn_id']      = $idtosend;
2134         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
2135         if($dissolve)
2136                 $postvars['dissolve'] = '1';
2137
2138
2139         if((($contact['rel']) && ($contact['rel'] != CONTACT_IS_SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
2140                 $postvars['data'] = $atom;
2141                 $postvars['perm'] = 'rw';
2142         }
2143         else {
2144                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
2145                 $postvars['perm'] = 'r';
2146         }
2147
2148         $postvars['ssl_policy'] = $ssl_policy;
2149
2150         if($page)
2151                 $postvars['page'] = $page;
2152
2153
2154         if($rino>0 && $rino_remote_version>0 && (! $dissolve)) {
2155                 logger('rino version: '. $rino_remote_version);
2156
2157                 switch($rino_remote_version) {
2158                         case 1:
2159                                 // Deprecated rino version!
2160                                 $key = substr(random_string(),0,16);
2161                                 $data = aes_encrypt($postvars['data'],$key);
2162                                 break;
2163                         case 2:
2164                                 // RINO 2 based on php-encryption
2165                                 try {
2166                                         $key = Crypto::createNewRandomKey();
2167                                 } catch (CryptoTestFailed $ex) {
2168                                         logger('Cannot safely create a key');
2169                                         return -1;
2170                                 } catch (CannotPerformOperation $ex) {
2171                                         logger('Cannot safely create a key');
2172                                         return -1;
2173                                 }
2174                                 try {
2175                                         $data = Crypto::encrypt($postvars['data'], $key);
2176                                 } catch (CryptoTestFailed $ex) {
2177                                         logger('Cannot safely perform encryption');
2178                                         return -1;
2179                                 } catch (CannotPerformOperation $ex) {
2180                                         logger('Cannot safely perform encryption');
2181                                         return -1;
2182                                 }
2183                                 break;
2184                         default:
2185                                 logger("rino: invalid requested verision '$rino_remote_version'");
2186                                 return -1;
2187                 }
2188
2189                 $postvars['rino'] = $rino_remote_version;
2190                 $postvars['data'] = bin2hex($data);
2191
2192                 #logger('rino: sent key = ' . $key, LOGGER_DEBUG);
2193
2194
2195                 if($dfrn_version >= 2.1) {
2196                         if(($contact['duplex'] && strlen($contact['pubkey']))
2197                                 || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey']))
2198                                 || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) {
2199
2200                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
2201                         }
2202                         else {
2203                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
2204                         }
2205                 }
2206                 else {
2207                         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
2208                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
2209                         }
2210                         else {
2211                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
2212                         }
2213                 }
2214
2215                 logger('md5 rawkey ' . md5($postvars['key']));
2216
2217                 $postvars['key'] = bin2hex($postvars['key']);
2218         }
2219
2220
2221         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
2222
2223         $xml = post_url($contact['notify'],$postvars);
2224
2225         logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
2226
2227         $curl_stat = $a->get_curl_code();
2228         if((! $curl_stat) || (! strlen($xml)))
2229                 return(-1); // timed out
2230
2231         if(($curl_stat == 503) && (stristr($a->get_curl_headers(),'retry-after')))
2232                 return(-1);
2233
2234         if(strpos($xml,'<?xml') === false) {
2235                 logger('dfrn_deliver: phase 2: no valid XML returned');
2236                 logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA);
2237                 return 3;
2238         }
2239
2240         if($contact['term-date'] != '0000-00-00 00:00:00') {
2241                 logger("dfrn_deliver: $url back from the dead - removing mark for death");
2242                 require_once('include/Contact.php');
2243                 unmark_for_death($contact);
2244         }
2245
2246         $res = parse_xml_string($xml);
2247
2248         return $res->status;
2249 }
2250
2251
2252 /*
2253   This function returns true if $update has an edited timestamp newer
2254   than $existing, i.e. $update contains new data which should override
2255   what's already there.  If there is no timestamp yet, the update is
2256   assumed to be newer.  If the update has no timestamp, the existing
2257   item is assumed to be up-to-date.  If the timestamps are equal it
2258   assumes the update has been seen before and should be ignored.
2259   */
2260 function edited_timestamp_is_newer($existing, $update) {
2261     if (!x($existing,'edited') || !$existing['edited']) {
2262         return true;
2263     }
2264     if (!x($update,'edited') || !$update['edited']) {
2265         return false;
2266     }
2267     $existing_edited = datetime_convert('UTC', 'UTC', $existing['edited']);
2268     $update_edited = datetime_convert('UTC', 'UTC', $update['edited']);
2269     return (strcmp($existing_edited, $update_edited) < 0);
2270 }
2271
2272 /**
2273  *
2274  * consume_feed - process atom feed and update anything/everything we might need to update
2275  *
2276  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
2277  *
2278  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
2279  *             It is this person's stuff that is going to be updated.
2280  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
2281  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
2282  *             have a contact record.
2283  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
2284  *        might not) try and subscribe to it.
2285  * $datedir sorts in reverse order
2286  * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
2287  *      imported prior to its children being seen in the stream unless we are certain
2288  *      of how the feed is arranged/ordered.
2289  * With $pass = 1, we only pull parent items out of the stream.
2290  * With $pass = 2, we only pull children (comments/likes).
2291  *
2292  * So running this twice, first with pass 1 and then with pass 2 will do the right
2293  * thing regardless of feed ordering. This won't be adequate in a fully-threaded
2294  * model where comments can have sub-threads. That would require some massive sorting
2295  * to get all the feed items into a mostly linear ordering, and might still require
2296  * recursion.
2297  */
2298
2299 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0) {
2300         if ($contact['network'] === NETWORK_OSTATUS) {
2301                 if ($pass < 2) {
2302                         logger("Consume OStatus messages ", LOGGER_DEBUG);
2303                         ostatus_import($xml,$importer,$contact, $hub);
2304                 }
2305                 return;
2306         }
2307
2308         if ($contact['network'] === NETWORK_FEED) {
2309                 if ($pass < 2) {
2310                         logger("Consume feeds", LOGGER_DEBUG);
2311                         feed_import($xml,$importer,$contact, $hub);
2312                 }
2313                 return;
2314         }
2315
2316         require_once('library/simplepie/simplepie.inc');
2317         require_once('include/contact_selectors.php');
2318
2319         if(! strlen($xml)) {
2320                 logger('consume_feed: empty input');
2321                 return;
2322         }
2323
2324         $feed = new SimplePie();
2325         $feed->set_raw_data($xml);
2326         if($datedir)
2327                 $feed->enable_order_by_date(true);
2328         else
2329                 $feed->enable_order_by_date(false);
2330         $feed->init();
2331
2332         if($feed->error())
2333                 logger('consume_feed: Error parsing XML: ' . $feed->error());
2334
2335         $permalink = $feed->get_permalink();
2336
2337         // Check at the feed level for updated contact name and/or photo
2338
2339         $name_updated  = '';
2340         $new_name = '';
2341         $photo_timestamp = '';
2342         $photo_url = '';
2343         $birthday = '';
2344         $contact_updated = '';
2345
2346         $hubs = $feed->get_links('hub');
2347         logger('consume_feed: hubs: ' . print_r($hubs,true), LOGGER_DATA);
2348
2349         if(count($hubs))
2350                 $hub = implode(',', $hubs);
2351
2352         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
2353         if(! $rawtags)
2354                 $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
2355         if($rawtags) {
2356                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
2357                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
2358                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
2359                         $new_name = $elems['name'][0]['data'];
2360
2361                         // Manually checking for changed contact names
2362                         if (($new_name != $contact['name']) AND ($new_name != "") AND ($name_updated <= $contact['name-date'])) {
2363                                 $name_updated = date("c");
2364                                 $photo_timestamp = date("c");
2365                         }
2366                 }
2367                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
2368                         if ($photo_timestamp == "")
2369                                 $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
2370                         $photo_url = $elems['link'][0]['attribs']['']['href'];
2371                 }
2372
2373                 if((x($rawtags[0]['child'], NAMESPACE_DFRN)) && (x($rawtags[0]['child'][NAMESPACE_DFRN],'birthday'))) {
2374                         $birthday = datetime_convert('UTC','UTC', $rawtags[0]['child'][NAMESPACE_DFRN]['birthday'][0]['data']);
2375                 }
2376         }
2377
2378         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
2379                 logger('consume_feed: Updating photo for '.$contact['name'].' from '.$photo_url.' uid: '.$contact['uid']);
2380
2381                 $contact_updated = $photo_timestamp;
2382
2383                 require_once("include/Photo.php");
2384                 $photos = import_profile_photo($photo_url,$contact['uid'],$contact['id']);
2385
2386                 q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
2387                         WHERE `uid` = %d AND `id` = %d AND NOT `self`",
2388                         dbesc(datetime_convert()),
2389                         dbesc($photos[0]),
2390                         dbesc($photos[1]),
2391                         dbesc($photos[2]),
2392                         intval($contact['uid']),
2393                         intval($contact['id'])
2394                 );
2395         }
2396
2397         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
2398                 if ($name_updated > $contact_updated)
2399                         $contact_updated = $name_updated;
2400
2401                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `id` = %d LIMIT 1",
2402                         intval($contact['uid']),
2403                         intval($contact['id'])
2404                 );
2405
2406                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d AND `name` != '%s' AND NOT `self`",
2407                         dbesc(notags(trim($new_name))),
2408                         dbesc(datetime_convert()),
2409                         intval($contact['uid']),
2410                         intval($contact['id']),
2411                         dbesc(notags(trim($new_name)))
2412                 );
2413
2414                 // do our best to update the name on content items
2415
2416                 if(count($r) AND (notags(trim($new_name)) != $r[0]['name'])) {
2417                         q("UPDATE `item` SET `author-name` = '%s' WHERE `author-name` = '%s' AND `author-link` = '%s' AND `uid` = %d AND `author-name` != '%s'",
2418                                 dbesc(notags(trim($new_name))),
2419                                 dbesc($r[0]['name']),
2420                                 dbesc($r[0]['url']),
2421                                 intval($contact['uid']),
2422                                 dbesc(notags(trim($new_name)))
2423                         );
2424                 }
2425         }
2426
2427         if ($contact_updated AND $new_name AND $photo_url)
2428                 poco_check($contact['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $contact['id'], $contact['uid']);
2429
2430         if(strlen($birthday)) {
2431                 if(substr($birthday,0,4) != $contact['bdyear']) {
2432                         logger('consume_feed: updating birthday: ' . $birthday);
2433
2434                         /**
2435                          *
2436                          * Add new birthday event for this person
2437                          *
2438                          * $bdtext is just a readable placeholder in case the event is shared
2439                          * with others. We will replace it during presentation to our $importer
2440                          * to contain a sparkle link and perhaps a photo.
2441                          *
2442                          */
2443
2444                         $bdtext = sprintf( t('%s\'s birthday'), $contact['name']);
2445                         $bdtext2 = sprintf( t('Happy Birthday %s'), ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ) ;
2446
2447
2448                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`summary`,`desc`,`type`)
2449                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ",
2450                                 intval($contact['uid']),
2451                                 intval($contact['id']),
2452                                 dbesc(datetime_convert()),
2453                                 dbesc(datetime_convert()),
2454                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
2455                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
2456                                 dbesc($bdtext),
2457                                 dbesc($bdtext2),
2458                                 dbesc('birthday')
2459                         );
2460
2461
2462                         // update bdyear
2463
2464                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d",
2465                                 dbesc(substr($birthday,0,4)),
2466                                 intval($contact['uid']),
2467                                 intval($contact['id'])
2468                         );
2469
2470                         // This function is called twice without reloading the contact
2471                         // Make sure we only create one event. This is why &$contact
2472                         // is a reference var in this function
2473
2474                         $contact['bdyear'] = substr($birthday,0,4);
2475                 }
2476         }
2477
2478         $community_page = 0;
2479         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
2480         if($rawtags) {
2481                 $community_page = intval($rawtags[0]['data']);
2482         }
2483         if(is_array($contact) && intval($contact['forum']) != $community_page) {
2484                 q("update contact set forum = %d where id = %d",
2485                         intval($community_page),
2486                         intval($contact['id'])
2487                 );
2488                 $contact['forum'] = (string) $community_page;
2489         }
2490
2491
2492         // process any deleted entries
2493
2494         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
2495         if(is_array($del_entries) && count($del_entries) && $pass != 2) {
2496                 foreach($del_entries as $dentry) {
2497                         $deleted = false;
2498                         if(isset($dentry['attribs']['']['ref'])) {
2499                                 $uri = $dentry['attribs']['']['ref'];
2500                                 $deleted = true;
2501                                 if(isset($dentry['attribs']['']['when'])) {
2502                                         $when = $dentry['attribs']['']['when'];
2503                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
2504                                 }
2505                                 else
2506                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
2507                         }
2508                         if($deleted && is_array($contact)) {
2509                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN `contact` on `item`.`contact-id` = `contact`.`id`
2510                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
2511                                         dbesc($uri),
2512                                         intval($importer['uid']),
2513                                         intval($contact['id'])
2514                                 );
2515                                 if(count($r)) {
2516                                         $item = $r[0];
2517
2518                                         if(! $item['deleted'])
2519                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
2520
2521                                         if($item['object-type'] === ACTIVITY_OBJ_EVENT) {
2522                                                 logger("Deleting event ".$item['event-id'], LOGGER_DEBUG);
2523                                                 event_delete($item['event-id']);
2524                                         }
2525
2526                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2527                                                 $xo = parse_xml_string($item['object'],false);
2528                                                 $xt = parse_xml_string($item['target'],false);
2529                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
2530                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
2531                                                                 dbesc($xt->id),
2532                                                                 intval($importer['importer_uid'])
2533                                                         );
2534                                                         if(count($i)) {
2535
2536                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
2537
2538                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
2539                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
2540                                                                 $author_copy = (($item['origin']) ? true : false);
2541
2542                                                                 if($owner_remove && $author_copy)
2543                                                                         continue;
2544                                                                 if($author_remove || $owner_remove) {
2545                                                                         $tags = explode(',',$i[0]['tag']);
2546                                                                         $newtags = array();
2547                                                                         if(count($tags)) {
2548                                                                                 foreach($tags as $tag)
2549                                                                                         if(trim($tag) !== trim($xo->body))
2550                                                                                                 $newtags[] = trim($tag);
2551                                                                         }
2552                                                                         q("update item set tag = '%s' where id = %d",
2553                                                                                 dbesc(implode(',',$newtags)),
2554                                                                                 intval($i[0]['id'])
2555                                                                         );
2556                                                                         create_tags_from_item($i[0]['id']);
2557                                                                 }
2558                                                         }
2559                                                 }
2560                                         }
2561
2562                                         if($item['uri'] == $item['parent-uri']) {
2563                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2564                                                         `body` = '', `title` = ''
2565                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
2566                                                         dbesc($when),
2567                                                         dbesc(datetime_convert()),
2568                                                         dbesc($item['uri']),
2569                                                         intval($importer['uid'])
2570                                                 );
2571                                                 create_tags_from_itemuri($item['uri'], $importer['uid']);
2572                                                 create_files_from_itemuri($item['uri'], $importer['uid']);
2573                                                 update_thread_uri($item['uri'], $importer['uid']);
2574                                         }
2575                                         else {
2576                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2577                                                         `body` = '', `title` = ''
2578                                                         WHERE `uri` = '%s' AND `uid` = %d",
2579                                                         dbesc($when),
2580                                                         dbesc(datetime_convert()),
2581                                                         dbesc($uri),
2582                                                         intval($importer['uid'])
2583                                                 );
2584                                                 create_tags_from_itemuri($uri, $importer['uid']);
2585                                                 create_files_from_itemuri($uri, $importer['uid']);
2586                                                 if($item['last-child']) {
2587                                                         // ensure that last-child is set in case the comment that had it just got wiped.
2588                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2589                                                                 dbesc(datetime_convert()),
2590                                                                 dbesc($item['parent-uri']),
2591                                                                 intval($item['uid'])
2592                                                         );
2593                                                         // who is the last child now?
2594                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `moderated` = 0 AND `uid` = %d
2595                                                                 ORDER BY `created` DESC LIMIT 1",
2596                                                                         dbesc($item['parent-uri']),
2597                                                                         intval($importer['uid'])
2598                                                         );
2599                                                         if(count($r)) {
2600                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2601                                                                         intval($r[0]['id'])
2602                                                                 );
2603                                                         }
2604                                                 }
2605                                         }
2606                                 }
2607                         }
2608                 }
2609         }
2610
2611         // Now process the feed
2612
2613         if($feed->get_item_quantity()) {
2614
2615                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
2616
2617         // in inverse date order
2618                 if ($datedir)
2619                         $items = array_reverse($feed->get_items());
2620                 else
2621                         $items = $feed->get_items();
2622
2623
2624                 foreach($items as $item) {
2625
2626                         $is_reply = false;
2627                         $item_id = $item->get_id();
2628                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
2629                         if(isset($rawthread[0]['attribs']['']['ref'])) {
2630                                 $is_reply = true;
2631                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
2632                         }
2633
2634                         if(($is_reply) && is_array($contact)) {
2635
2636                                 if($pass == 1)
2637                                         continue;
2638
2639                                 // not allowed to post
2640
2641                                 if($contact['rel'] == CONTACT_IS_FOLLOWER)
2642                                         continue;
2643
2644
2645                                 // Have we seen it? If not, import it.
2646
2647                                 $item_id  = $item->get_id();
2648                                 $datarray = get_atom_elements($feed, $item, $contact);
2649
2650                                 if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2651                                         $datarray['author-name'] = $contact['name'];
2652                                 if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2653                                         $datarray['author-link'] = $contact['url'];
2654                                 if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2655                                         $datarray['author-avatar'] = $contact['thumb'];
2656
2657                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2658                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2659                                         continue;
2660                                 }
2661
2662                                 $force_parent = false;
2663                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2664                                         if($contact['network'] === NETWORK_OSTATUS)
2665                                                 $force_parent = true;
2666                                         if(strlen($datarray['title']))
2667                                                 unset($datarray['title']);
2668                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2669                                                 dbesc(datetime_convert()),
2670                                                 dbesc($parent_uri),
2671                                                 intval($importer['uid'])
2672                                         );
2673                                         $datarray['last-child'] = 1;
2674                                         update_thread_uri($parent_uri, $importer['uid']);
2675                                 }
2676
2677
2678                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2679                                         dbesc($item_id),
2680                                         intval($importer['uid'])
2681                                 );
2682
2683                                 // Update content if 'updated' changes
2684
2685                                 if(count($r)) {
2686                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2687
2688                                                 // do not accept (ignore) an earlier edit than one we currently have.
2689                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2690                                                         continue;
2691
2692                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2693                                                         dbesc($datarray['title']),
2694                                                         dbesc($datarray['body']),
2695                                                         dbesc($datarray['tag']),
2696                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2697                                                         dbesc(datetime_convert()),
2698                                                         dbesc($item_id),
2699                                                         intval($importer['uid'])
2700                                                 );
2701                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2702                                                 update_thread_uri($item_id, $importer['uid']);
2703                                         }
2704
2705                                         // update last-child if it changes
2706
2707                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2708                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
2709                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2710                                                         dbesc(datetime_convert()),
2711                                                         dbesc($parent_uri),
2712                                                         intval($importer['uid'])
2713                                                 );
2714                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
2715                                                         intval($allow[0]['data']),
2716                                                         dbesc(datetime_convert()),
2717                                                         dbesc($item_id),
2718                                                         intval($importer['uid'])
2719                                                 );
2720                                                 update_thread_uri($item_id, $importer['uid']);
2721                                         }
2722                                         continue;
2723                                 }
2724
2725
2726                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2727                                         // one way feed - no remote comment ability
2728                                         $datarray['last-child'] = 0;
2729                                 }
2730                                 $datarray['parent-uri'] = $parent_uri;
2731                                 $datarray['uid'] = $importer['uid'];
2732                                 $datarray['contact-id'] = $contact['id'];
2733                                 if(($datarray['verb'] === ACTIVITY_LIKE)
2734                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
2735                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
2736                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
2737                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
2738                                         $datarray['type'] = 'activity';
2739                                         $datarray['gravity'] = GRAVITY_LIKE;
2740                                         // only one like or dislike per person
2741                                         // splitted into two queries for performance issues
2742                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
2743                                                 intval($datarray['uid']),
2744                                                 intval($datarray['contact-id']),
2745                                                 dbesc($datarray['verb']),
2746                                                 dbesc($parent_uri)
2747                                         );
2748                                         if($r && count($r))
2749                                                 continue;
2750
2751                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
2752                                                 intval($datarray['uid']),
2753                                                 intval($datarray['contact-id']),
2754                                                 dbesc($datarray['verb']),
2755                                                 dbesc($parent_uri)
2756                                         );
2757                                         if($r && count($r))
2758                                                 continue;
2759                                 }
2760
2761                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2762                                         $xo = parse_xml_string($datarray['object'],false);
2763                                         $xt = parse_xml_string($datarray['target'],false);
2764
2765                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
2766                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
2767                                                         dbesc($xt->id),
2768                                                         intval($importer['importer_uid'])
2769                                                 );
2770                                                 if(! count($r))
2771                                                         continue;
2772
2773                                                 // extract tag, if not duplicate, add to parent item
2774                                                 if($xo->id && $xo->content) {
2775                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
2776                                                         if(! (stristr($r[0]['tag'],$newtag))) {
2777                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
2778                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . $newtag),
2779                                                                         intval($r[0]['id'])
2780                                                                 );
2781                                                                 create_tags_from_item($r[0]['id']);
2782                                                         }
2783                                                 }
2784                                         }
2785                                 }
2786
2787                                 $r = item_store($datarray,$force_parent);
2788                                 continue;
2789                         }
2790
2791                         else {
2792
2793                                 // Head post of a conversation. Have we seen it? If not, import it.
2794
2795                                 $item_id  = $item->get_id();
2796
2797                                 $datarray = get_atom_elements($feed, $item, $contact);
2798
2799                                 if(is_array($contact)) {
2800                                         if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2801                                                 $datarray['author-name'] = $contact['name'];
2802                                         if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2803                                                 $datarray['author-link'] = $contact['url'];
2804                                         if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2805                                                 $datarray['author-avatar'] = $contact['thumb'];
2806                                 }
2807
2808                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2809                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2810                                         continue;
2811                                 }
2812
2813                                 // special handling for events
2814
2815                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
2816                                         $ev = bbtoevent($datarray['body']);
2817                                         if((x($ev,'desc') || x($ev,'summary')) && x($ev,'start')) {
2818                                                 $ev['uid'] = $importer['uid'];
2819                                                 $ev['uri'] = $item_id;
2820                                                 $ev['edited'] = $datarray['edited'];
2821                                                 $ev['private'] = $datarray['private'];
2822                                                 $ev['guid'] = $datarray['guid'];
2823
2824                                                 if(is_array($contact))
2825                                                         $ev['cid'] = $contact['id'];
2826                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2827                                                         dbesc($item_id),
2828                                                         intval($importer['uid'])
2829                                                 );
2830                                                 if(count($r))
2831                                                         $ev['id'] = $r[0]['id'];
2832                                                 $xyz = event_store($ev);
2833                                                 continue;
2834                                         }
2835                                 }
2836
2837                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2838                                         if(strlen($datarray['title']))
2839                                                 unset($datarray['title']);
2840                                         $datarray['last-child'] = 1;
2841                                 }
2842
2843
2844                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2845                                         dbesc($item_id),
2846                                         intval($importer['uid'])
2847                                 );
2848
2849                                 // Update content if 'updated' changes
2850
2851                                 if(count($r)) {
2852                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2853
2854                                                 // do not accept (ignore) an earlier edit than one we currently have.
2855                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2856                                                         continue;
2857
2858                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2859                                                         dbesc($datarray['title']),
2860                                                         dbesc($datarray['body']),
2861                                                         dbesc($datarray['tag']),
2862                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2863                                                         dbesc(datetime_convert()),
2864                                                         dbesc($item_id),
2865                                                         intval($importer['uid'])
2866                                                 );
2867                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2868                                                 update_thread_uri($item_id, $importer['uid']);
2869                                         }
2870
2871                                         // update last-child if it changes
2872
2873                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2874                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
2875                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2876                                                         intval($allow[0]['data']),
2877                                                         dbesc(datetime_convert()),
2878                                                         dbesc($item_id),
2879                                                         intval($importer['uid'])
2880                                                 );
2881                                                 update_thread_uri($item_id, $importer['uid']);
2882                                         }
2883                                         continue;
2884                                 }
2885
2886                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
2887                                         logger('consume-feed: New follower');
2888                                         new_follower($importer,$contact,$datarray,$item);
2889                                         return;
2890                                 }
2891                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
2892                                         lose_follower($importer,$contact,$datarray,$item);
2893                                         return;
2894                                 }
2895
2896                                 if(activity_match($datarray['verb'],ACTIVITY_REQ_FRIEND)) {
2897                                         logger('consume-feed: New friend request');
2898                                         new_follower($importer,$contact,$datarray,$item,true);
2899                                         return;
2900                                 }
2901                                 if(activity_match($datarray['verb'],ACTIVITY_UNFRIEND))  {
2902                                         lose_sharer($importer,$contact,$datarray,$item);
2903                                         return;
2904                                 }
2905
2906
2907                                 if(! is_array($contact))
2908                                         return;
2909
2910
2911                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2912                                                 // one way feed - no remote comment ability
2913                                                 $datarray['last-child'] = 0;
2914                                 }
2915                                 if($contact['network'] === NETWORK_FEED)
2916                                         $datarray['private'] = 2;
2917
2918                                 $datarray['parent-uri'] = $item_id;
2919                                 $datarray['uid'] = $importer['uid'];
2920                                 $datarray['contact-id'] = $contact['id'];
2921
2922                                 if(! link_compare($datarray['owner-link'],$contact['url'])) {
2923                                         // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
2924                                         // but otherwise there's a possible data mixup on the sender's system.
2925                                         // the tgroup delivery code called from item_store will correct it if it's a forum,
2926                                         // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
2927                                         logger('consume_feed: Correcting item owner.', LOGGER_DEBUG);
2928                                         $datarray['owner-name']   = $contact['name'];
2929                                         $datarray['owner-link']   = $contact['url'];
2930                                         $datarray['owner-avatar'] = $contact['thumb'];
2931                                 }
2932
2933                                 // We've allowed "followers" to reach this point so we can decide if they are
2934                                 // posting an @-tag delivery, which followers are allowed to do for certain
2935                                 // page types. Now that we've parsed the post, let's check if it is legit. Otherwise ignore it.
2936
2937                                 if(($contact['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['uid'],$datarray)))
2938                                         continue;
2939
2940                                 // This is my contact on another system, but it's really me.
2941                                 // Turn this into a wall post.
2942                                 $notify = item_is_remote_self($contact, $datarray);
2943
2944                                 $r = item_store($datarray, false, $notify);
2945                                 logger('Stored - Contact '.$contact['url'].' Notify '.$notify.' return '.$r.' Item '.print_r($datarray, true), LOGGER_DEBUG);
2946                                 continue;
2947
2948                         }
2949                 }
2950         }
2951 }
2952
2953 function item_is_remote_self($contact, &$datarray) {
2954         $a = get_app();
2955
2956         if (!$contact['remote_self'])
2957                 return false;
2958
2959         // Prevent the forwarding of posts that are forwarded
2960         if ($datarray["extid"] == NETWORK_DFRN)
2961                 return false;
2962
2963         // Prevent to forward already forwarded posts
2964         if ($datarray["app"] == $a->get_hostname())
2965                 return false;
2966
2967         // Only forward posts
2968         if ($datarray["verb"] != ACTIVITY_POST)
2969                 return false;
2970
2971         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
2972                 return false;
2973
2974         $datarray2 = $datarray;
2975         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
2976         if ($contact['remote_self'] == 2) {
2977                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
2978                         intval($contact['uid']));
2979                 if (count($r)) {
2980                         $datarray['contact-id'] = $r[0]["id"];
2981
2982                         $datarray['owner-name'] = $r[0]["name"];
2983                         $datarray['owner-link'] = $r[0]["url"];
2984                         $datarray['owner-avatar'] = $r[0]["thumb"];
2985
2986                         $datarray['author-name']   = $datarray['owner-name'];
2987                         $datarray['author-link']   = $datarray['owner-link'];
2988                         $datarray['author-avatar'] = $datarray['owner-avatar'];
2989                 }
2990
2991                 if ($contact['network'] != NETWORK_FEED) {
2992                         $datarray["guid"] = get_guid(32);
2993                         unset($datarray["plink"]);
2994                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
2995                         $datarray["parent-uri"] = $datarray["uri"];
2996                         $datarray["extid"] = $contact['network'];
2997                         $urlpart = parse_url($datarray2['author-link']);
2998                         $datarray["app"] = $urlpart["host"];
2999                 } else
3000                         $datarray['private'] = 0;
3001         }
3002
3003         if ($contact['network'] != NETWORK_FEED) {
3004                 // Store the original post
3005                 $r = item_store($datarray2, false, false);
3006                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
3007         } else
3008                 $datarray["app"] = "Feed";
3009
3010         return true;
3011 }
3012
3013 function local_delivery($importer,$data) {
3014         $a = get_app();
3015
3016         logger(__function__, LOGGER_TRACE);
3017
3018         if($importer['readonly']) {
3019                 // We aren't receiving stuff from this person. But we will quietly ignore them
3020                 // rather than a blatant "go away" message.
3021                 logger('local_delivery: ignoring');
3022                 return 0;
3023                 //NOTREACHED
3024         }
3025
3026         // Consume notification feed. This may differ from consuming a public feed in several ways
3027         // - might contain email or friend suggestions
3028         // - might contain remote followup to our message
3029         //              - in which case we need to accept it and then notify other conversants
3030         // - we may need to send various email notifications
3031
3032         $feed = new SimplePie();
3033         $feed->set_raw_data($data);
3034         $feed->enable_order_by_date(false);
3035         $feed->init();
3036
3037
3038         if($feed->error())
3039                 logger('local_delivery: Error parsing XML: ' . $feed->error());
3040
3041
3042         // Check at the feed level for updated contact name and/or photo
3043
3044         $name_updated  = '';
3045         $new_name = '';
3046         $photo_timestamp = '';
3047         $photo_url = '';
3048         $contact_updated = '';
3049
3050
3051         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
3052
3053 // Fallback should not be needed here. If it isn't DFRN it won't have DFRN updated tags
3054 //      if(! $rawtags)
3055 //              $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
3056
3057         if($rawtags) {
3058                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
3059                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
3060                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
3061                         $new_name = $elems['name'][0]['data'];
3062
3063                         // Manually checking for changed contact names
3064                         if (($new_name != $importer['name']) AND ($new_name != "") AND ($name_updated <= $importer['name-date'])) {
3065                                 $name_updated = date("c");
3066                                 $photo_timestamp = date("c");
3067                         }
3068                 }
3069                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
3070                         if ($photo_timestamp == "")
3071                                 $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
3072                         $photo_url = $elems['link'][0]['attribs']['']['href'];
3073                 }
3074         }
3075
3076         if(($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $importer['avatar-date'])) {
3077
3078                 $contact_updated = $photo_timestamp;
3079
3080                 logger('local_delivery: Updating photo for ' . $importer['name']);
3081                 require_once("include/Photo.php");
3082
3083                 $photos = import_profile_photo($photo_url,$importer['importer_uid'],$importer['id']);
3084
3085                 q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
3086                         WHERE `uid` = %d AND `id` = %d AND NOT `self`",
3087                         dbesc(datetime_convert()),
3088                         dbesc($photos[0]),
3089                         dbesc($photos[1]),
3090                         dbesc($photos[2]),
3091                         intval($importer['importer_uid']),
3092                         intval($importer['id'])
3093                 );
3094         }
3095
3096         if(($name_updated) && (strlen($new_name)) && ($name_updated > $importer['name-date'])) {
3097                 if ($name_updated > $contact_updated)
3098                         $contact_updated = $name_updated;
3099
3100                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `id` = %d LIMIT 1",
3101                         intval($importer['importer_uid']),
3102                         intval($importer['id'])
3103                 );
3104
3105                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d AND `name` != '%s' AND NOT `self`",
3106                         dbesc(notags(trim($new_name))),
3107                         dbesc(datetime_convert()),
3108                         intval($importer['importer_uid']),
3109                         intval($importer['id']),
3110                         dbesc(notags(trim($new_name)))
3111                 );
3112
3113                 // do our best to update the name on content items
3114
3115                 if(count($r) AND (notags(trim($new_name)) != $r[0]['name'])) {
3116                         q("UPDATE `item` SET `author-name` = '%s' WHERE `author-name` = '%s' AND `author-link` = '%s' AND `uid` = %d AND `author-name` != '%s'",
3117                                 dbesc(notags(trim($new_name))),
3118                                 dbesc($r[0]['name']),
3119                                 dbesc($r[0]['url']),
3120                                 intval($importer['importer_uid']),
3121                                 dbesc(notags(trim($new_name)))
3122                         );
3123                 }
3124         }
3125
3126         if ($contact_updated AND $new_name AND $photo_url)
3127                 poco_check($importer['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $importer['id'], $importer['importer_uid']);
3128
3129         // Currently unsupported - needs a lot of work
3130         $reloc = $feed->get_feed_tags( NAMESPACE_DFRN, 'relocate' );
3131         if(isset($reloc[0]['child'][NAMESPACE_DFRN])) {
3132                 $base = $reloc[0]['child'][NAMESPACE_DFRN];
3133                 $newloc = array();
3134                 $newloc['uid'] = $importer['importer_uid'];
3135                 $newloc['cid'] = $importer['id'];
3136                 $newloc['name'] = notags(unxmlify($base['name'][0]['data']));
3137                 $newloc['photo'] = notags(unxmlify($base['photo'][0]['data']));
3138                 $newloc['thumb'] = notags(unxmlify($base['thumb'][0]['data']));
3139                 $newloc['micro'] = notags(unxmlify($base['micro'][0]['data']));
3140                 $newloc['url'] = notags(unxmlify($base['url'][0]['data']));
3141                 $newloc['request'] = notags(unxmlify($base['request'][0]['data']));
3142                 $newloc['confirm'] = notags(unxmlify($base['confirm'][0]['data']));
3143                 $newloc['notify'] = notags(unxmlify($base['notify'][0]['data']));
3144                 $newloc['poll'] = notags(unxmlify($base['poll'][0]['data']));
3145                 $newloc['sitepubkey'] = notags(unxmlify($base['sitepubkey'][0]['data']));
3146                 /** relocated user must have original key pair */
3147                 /*$newloc['pubkey'] = notags(unxmlify($base['pubkey'][0]['data']));
3148                 $newloc['prvkey'] = notags(unxmlify($base['prvkey'][0]['data']));*/
3149
3150                 logger("items:relocate contact ".print_r($newloc, true).print_r($importer, true), LOGGER_DEBUG);
3151
3152                 // update contact
3153                 $r = q("SELECT photo, url FROM contact WHERE id=%d AND uid=%d;",
3154                         intval($importer['id']),
3155                         intval($importer['importer_uid']));
3156                 if ($r === false)
3157                         return 1;
3158                 $old = $r[0];
3159
3160                 $x = q("UPDATE contact SET
3161                                         name = '%s',
3162                                         photo = '%s',
3163                                         thumb = '%s',
3164                                         micro = '%s',
3165                                         url = '%s',
3166                                         nurl = '%s',
3167                                         request = '%s',
3168                                         confirm = '%s',
3169                                         notify = '%s',
3170                                         poll = '%s',
3171                                         `site-pubkey` = '%s'
3172                         WHERE id=%d AND uid=%d;",
3173                                         dbesc($newloc['name']),
3174                                         dbesc($newloc['photo']),
3175                                         dbesc($newloc['thumb']),
3176                                         dbesc($newloc['micro']),
3177                                         dbesc($newloc['url']),
3178                                         dbesc(normalise_link($newloc['url'])),
3179                                         dbesc($newloc['request']),
3180                                         dbesc($newloc['confirm']),
3181                                         dbesc($newloc['notify']),
3182                                         dbesc($newloc['poll']),
3183                                         dbesc($newloc['sitepubkey']),
3184                                         intval($importer['id']),
3185                                         intval($importer['importer_uid']));
3186
3187                 if ($x === false)
3188                         return 1;
3189                 // update items
3190                 $fields = array(
3191                         'owner-link' => array($old['url'], $newloc['url']),
3192                         'author-link' => array($old['url'], $newloc['url']),
3193                         'owner-avatar' => array($old['photo'], $newloc['photo']),
3194                         'author-avatar' => array($old['photo'], $newloc['photo']),
3195                         );
3196                 foreach ($fields as $n=>$f){
3197                         $x = q("UPDATE `item` SET `%s`='%s' WHERE `%s`='%s' AND uid=%d",
3198                                         $n, dbesc($f[1]),
3199                                         $n, dbesc($f[0]),
3200                                         intval($importer['importer_uid']));
3201                                 if ($x === false)
3202                                         return 1;
3203                         }
3204
3205                 // TODO
3206                 // merge with current record, current contents have priority
3207                 // update record, set url-updated
3208                 // update profile photos
3209                 // schedule a scan?
3210                 return 0;
3211         }
3212
3213
3214         // handle friend suggestion notification
3215
3216         $sugg = $feed->get_feed_tags( NAMESPACE_DFRN, 'suggest' );
3217         if(isset($sugg[0]['child'][NAMESPACE_DFRN])) {
3218                 $base = $sugg[0]['child'][NAMESPACE_DFRN];
3219                 $fsugg = array();
3220                 $fsugg['uid'] = $importer['importer_uid'];
3221                 $fsugg['cid'] = $importer['id'];
3222                 $fsugg['name'] = notags(unxmlify($base['name'][0]['data']));
3223                 $fsugg['photo'] = notags(unxmlify($base['photo'][0]['data']));
3224                 $fsugg['url'] = notags(unxmlify($base['url'][0]['data']));
3225                 $fsugg['request'] = notags(unxmlify($base['request'][0]['data']));
3226                 $fsugg['body'] = escape_tags(unxmlify($base['note'][0]['data']));
3227
3228                 // Does our member already have a friend matching this description?
3229
3230                 $r = q("SELECT * FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
3231                         dbesc($fsugg['name']),
3232                         dbesc(normalise_link($fsugg['url'])),
3233                         intval($fsugg['uid'])
3234                 );
3235                 if(count($r))
3236                         return 0;
3237
3238                 // Do we already have an fcontact record for this person?
3239
3240                 $fid = 0;
3241                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3242                         dbesc($fsugg['url']),
3243                         dbesc($fsugg['name']),
3244                         dbesc($fsugg['request'])
3245                 );
3246                 if(count($r)) {
3247                         $fid = $r[0]['id'];
3248
3249                         // OK, we do. Do we already have an introduction for this person ?
3250                         $r = q("select id from intro where uid = %d and fid = %d limit 1",
3251                                 intval($fsugg['uid']),
3252                                 intval($fid)
3253                         );
3254                         if(count($r))
3255                                 return 0;
3256                 }
3257                 if(! $fid)
3258                         $r = q("INSERT INTO `fcontact` ( `name`,`url`,`photo`,`request` ) VALUES ( '%s', '%s', '%s', '%s' ) ",
3259                         dbesc($fsugg['name']),
3260                         dbesc($fsugg['url']),
3261                         dbesc($fsugg['photo']),
3262                         dbesc($fsugg['request'])
3263                 );
3264                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3265                         dbesc($fsugg['url']),
3266                         dbesc($fsugg['name']),
3267                         dbesc($fsugg['request'])
3268                 );
3269                 if(count($r)) {
3270                         $fid = $r[0]['id'];
3271                 }
3272                 // database record did not get created. Quietly give up.
3273                 else
3274                         return 0;
3275
3276
3277                 $hash = random_string();
3278
3279                 $r = q("INSERT INTO `intro` ( `uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked` )
3280                         VALUES( %d, %d, %d, '%s', '%s', '%s', %d )",
3281                         intval($fsugg['uid']),
3282                         intval($fid),
3283                         intval($fsugg['cid']),
3284                         dbesc($fsugg['body']),
3285                         dbesc($hash),
3286                         dbesc(datetime_convert()),
3287                         intval(0)
3288                 );
3289
3290                 notification(array(
3291                         'type'         => NOTIFY_SUGGEST,
3292                         'notify_flags' => $importer['notify-flags'],
3293                         'language'     => $importer['language'],
3294                         'to_name'      => $importer['username'],
3295                         'to_email'     => $importer['email'],
3296                         'uid'          => $importer['importer_uid'],
3297                         'item'         => $fsugg,
3298                         'link'         => $a->get_baseurl() . '/notifications/intros',
3299                         'source_name'  => $importer['name'],
3300                         'source_link'  => $importer['url'],
3301                         'source_photo' => $importer['photo'],
3302                         'verb'         => ACTIVITY_REQ_FRIEND,
3303                         'otype'        => 'intro'
3304                 ));
3305
3306                 return 0;
3307         }
3308
3309         $ismail = false;
3310
3311         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
3312         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
3313
3314                 logger('local_delivery: private message received');
3315
3316                 $ismail = true;
3317                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
3318
3319                 $msg = array();
3320                 $msg['uid'] = $importer['importer_uid'];
3321                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
3322                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
3323                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
3324                 $msg['contact-id'] = $importer['id'];
3325                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
3326                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
3327                 $msg['seen'] = 0;
3328                 $msg['replied'] = 0;
3329                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
3330                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
3331                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
3332
3333                 dbesc_array($msg);
3334
3335                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
3336                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
3337
3338                 // send notifications.
3339
3340                 require_once('include/enotify.php');
3341
3342                 $notif_params = array(
3343                         'type' => NOTIFY_MAIL,
3344                         'notify_flags' => $importer['notify-flags'],
3345                         'language' => $importer['language'],
3346                         'to_name' => $importer['username'],
3347                         'to_email' => $importer['email'],
3348                         'uid' => $importer['importer_uid'],
3349                         'item' => $msg,
3350                         'source_name' => $msg['from-name'],
3351                         'source_link' => $importer['url'],
3352                         'source_photo' => $importer['thumb'],
3353                         'verb' => ACTIVITY_POST,
3354                         'otype' => 'mail'
3355                 );
3356
3357                 notification($notif_params);
3358                 return 0;
3359
3360                 // NOTREACHED
3361         }
3362
3363         $community_page = 0;
3364         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
3365         if($rawtags) {
3366                 $community_page = intval($rawtags[0]['data']);
3367         }
3368         if(intval($importer['forum']) != $community_page) {
3369                 q("update contact set forum = %d where id = %d",
3370                         intval($community_page),
3371                         intval($importer['id'])
3372                 );
3373                 $importer['forum'] = (string) $community_page;
3374         }
3375
3376         logger('local_delivery: feed item count = ' . $feed->get_item_quantity());
3377
3378         // process any deleted entries
3379
3380         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
3381         if(is_array($del_entries) && count($del_entries)) {
3382                 foreach($del_entries as $dentry) {
3383                         $deleted = false;
3384                         if(isset($dentry['attribs']['']['ref'])) {
3385                                 $uri = $dentry['attribs']['']['ref'];
3386                                 $deleted = true;
3387                                 if(isset($dentry['attribs']['']['when'])) {
3388                                         $when = $dentry['attribs']['']['when'];
3389                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
3390                                 }
3391                                 else
3392                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
3393                         }
3394                         if($deleted) {
3395
3396                                 // check for relayed deletes to our conversation
3397
3398                                 $is_reply = false;
3399                                 $r = q("select * from item where uri = '%s' and uid = %d limit 1",
3400                                         dbesc($uri),
3401                                         intval($importer['importer_uid'])
3402                                 );
3403                                 if(count($r)) {
3404                                         $parent_uri = $r[0]['parent-uri'];
3405                                         if($r[0]['id'] != $r[0]['parent'])
3406                                                 $is_reply = true;
3407                                 }
3408
3409                                 if($is_reply) {
3410                                         $community = false;
3411
3412                                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3413                                                 $sql_extra = '';
3414                                                 $community = true;
3415                                                 logger('local_delivery: possible community delete');
3416                                         }
3417                                         else
3418                                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3419
3420                                         // was the top-level post for this reply written by somebody on this site?
3421                                         // Specifically, the recipient?
3422
3423                                         $is_a_remote_delete = false;
3424
3425                                         // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3426                                         $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3427                                                 `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3428                                                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3429                                                 WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3430                                                 AND `item`.`uid` = %d
3431                                                 $sql_extra
3432                                                 LIMIT 1",
3433                                                 dbesc($parent_uri),
3434                                                 dbesc($parent_uri),
3435                                                 dbesc($parent_uri),
3436                                                 intval($importer['importer_uid'])
3437                                         );
3438                                         if($r && count($r))
3439                                                 $is_a_remote_delete = true;
3440
3441                                         // Does this have the characteristics of a community or private group comment?
3442                                         // If it's a reply to a wall post on a community/prvgroup page it's a
3443                                         // valid community comment. Also forum_mode makes it valid for sure.
3444                                         // If neither, it's not.
3445
3446                                         if($is_a_remote_delete && $community) {
3447                                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3448                                                         $is_a_remote_delete = false;
3449                                                         logger('local_delivery: not a community delete');
3450                                                 }
3451                                         }
3452
3453                                         if($is_a_remote_delete) {
3454                                                 logger('local_delivery: received remote delete');
3455                                         }
3456                                 }
3457
3458                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN contact on `item`.`contact-id` = `contact`.`id`
3459                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
3460                                         dbesc($uri),
3461                                         intval($importer['importer_uid']),
3462                                         intval($importer['id'])
3463                                 );
3464
3465                                 if(count($r)) {
3466                                         $item = $r[0];
3467
3468                                         if($item['deleted'])
3469                                                 continue;
3470
3471                                         logger('local_delivery: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
3472
3473                                         if($item['object-type'] === ACTIVITY_OBJ_EVENT) {
3474                                                 logger("Deleting event ".$item['event-id'], LOGGER_DEBUG);
3475                                                 event_delete($item['event-id']);
3476                                         }
3477
3478                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3479                                                 $xo = parse_xml_string($item['object'],false);
3480                                                 $xt = parse_xml_string($item['target'],false);
3481
3482                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
3483                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
3484                                                                 dbesc($xt->id),
3485                                                                 intval($importer['importer_uid'])
3486                                                         );
3487                                                         if(count($i)) {
3488
3489                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
3490
3491                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
3492                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
3493                                                                 $author_copy = (($item['origin']) ? true : false);
3494
3495                                                                 if($owner_remove && $author_copy)
3496                                                                         continue;
3497                                                                 if($author_remove || $owner_remove) {
3498                                                                         $tags = explode(',',$i[0]['tag']);
3499                                                                         $newtags = array();
3500                                                                         if(count($tags)) {
3501                                                                                 foreach($tags as $tag)
3502                                                                                         if(trim($tag) !== trim($xo->body))
3503                                                                                                 $newtags[] = trim($tag);
3504                                                                         }
3505                                                                         q("update item set tag = '%s' where id = %d",
3506                                                                                 dbesc(implode(',',$newtags)),
3507                                                                                 intval($i[0]['id'])
3508                                                                         );
3509                                                                         create_tags_from_item($i[0]['id']);
3510                                                                 }
3511                                                         }
3512                                                 }
3513                                         }
3514
3515                                         if($item['uri'] == $item['parent-uri']) {
3516                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3517                                                         `body` = '', `title` = ''
3518                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
3519                                                         dbesc($when),
3520                                                         dbesc(datetime_convert()),
3521                                                         dbesc($item['uri']),
3522                                                         intval($importer['importer_uid'])
3523                                                 );
3524                                                 create_tags_from_itemuri($item['uri'], $importer['importer_uid']);
3525                                                 create_files_from_itemuri($item['uri'], $importer['importer_uid']);
3526                                                 update_thread_uri($item['uri'], $importer['importer_uid']);
3527                                         }
3528                                         else {
3529                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3530                                                         `body` = '', `title` = ''
3531                                                         WHERE `uri` = '%s' AND `uid` = %d",
3532                                                         dbesc($when),
3533                                                         dbesc(datetime_convert()),
3534                                                         dbesc($uri),
3535                                                         intval($importer['importer_uid'])
3536                                                 );
3537                                                 create_tags_from_itemuri($uri, $importer['importer_uid']);
3538                                                 create_files_from_itemuri($uri, $importer['importer_uid']);
3539                                                 update_thread_uri($uri, $importer['importer_uid']);
3540                                                 if($item['last-child']) {
3541                                                         // ensure that last-child is set in case the comment that had it just got wiped.
3542                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
3543                                                                 dbesc(datetime_convert()),
3544                                                                 dbesc($item['parent-uri']),
3545                                                                 intval($item['uid'])
3546                                                         );
3547                                                         // who is the last child now?
3548                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
3549                                                                 ORDER BY `created` DESC LIMIT 1",
3550                                                                         dbesc($item['parent-uri']),
3551                                                                         intval($importer['importer_uid'])
3552                                                         );
3553                                                         if(count($r)) {
3554                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
3555                                                                         intval($r[0]['id'])
3556                                                                 );
3557                                                         }
3558                                                 }
3559                                                 // if this is a relayed delete, propagate it to other recipients
3560
3561                                                 if($is_a_remote_delete)
3562                                                         proc_run('php',"include/notifier.php","drop",$item['id']);
3563                                         }
3564                                 }
3565                         }
3566                 }
3567         }
3568
3569
3570         foreach($feed->get_items() as $item) {
3571
3572                 $is_reply = false;
3573                 $item_id = $item->get_id();
3574                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
3575                 if(isset($rawthread[0]['attribs']['']['ref'])) {
3576                         $is_reply = true;
3577                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
3578                 }
3579
3580                 if($is_reply) {
3581                         $community = false;
3582
3583                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3584                                 $sql_extra = '';
3585                                 $community = true;
3586                                 logger('local_delivery: possible community reply');
3587                         }
3588                         else
3589                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3590
3591                         // was the top-level post for this reply written by somebody on this site?
3592                         // Specifically, the recipient?
3593
3594                         $is_a_remote_comment = false;
3595                         $top_uri = $parent_uri;
3596
3597                         $r = q("select `item`.`parent-uri` from `item`
3598                                 WHERE `item`.`uri` = '%s'
3599                                 LIMIT 1",
3600                                 dbesc($parent_uri)
3601                         );
3602                         if($r && count($r)) {
3603                                 $top_uri = $r[0]['parent-uri'];
3604
3605                                 // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3606                                 $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3607                                         `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3608                                         INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3609                                         WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3610                                         AND `item`.`uid` = %d
3611                                         $sql_extra
3612                                         LIMIT 1",
3613                                         dbesc($top_uri),
3614                                         dbesc($top_uri),
3615                                         dbesc($top_uri),
3616                                         intval($importer['importer_uid'])
3617                                 );
3618                                 if($r && count($r))
3619                                         $is_a_remote_comment = true;
3620                         }
3621
3622                         // Does this have the characteristics of a community or private group comment?
3623                         // If it's a reply to a wall post on a community/prvgroup page it's a
3624                         // valid community comment. Also forum_mode makes it valid for sure.
3625                         // If neither, it's not.
3626
3627                         if($is_a_remote_comment && $community) {
3628                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3629                                         $is_a_remote_comment = false;
3630                                         logger('local_delivery: not a community reply');
3631                                 }
3632                         }
3633
3634                         if($is_a_remote_comment) {
3635                                 logger('local_delivery: received remote comment');
3636                                 $is_like = false;
3637                                 // remote reply to our post. Import and then notify everybody else.
3638
3639                                 $datarray = get_atom_elements($feed, $item);
3640
3641                                 $r = q("SELECT `id`, `uid`, `last-child`, `edited`, `body`  FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3642                                         dbesc($item_id),
3643                                         intval($importer['importer_uid'])
3644                                 );
3645
3646                                 // Update content if 'updated' changes
3647
3648                                 if(count($r)) {
3649                                         $iid = $r[0]['id'];
3650                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3651
3652                                                 // do not accept (ignore) an earlier edit than one we currently have.
3653                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3654                                                         continue;
3655
3656                                                 logger('received updated comment' , LOGGER_DEBUG);
3657                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3658                                                         dbesc($datarray['title']),
3659                                                         dbesc($datarray['body']),
3660                                                         dbesc($datarray['tag']),
3661                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3662                                                         dbesc(datetime_convert()),
3663                                                         dbesc($item_id),
3664                                                         intval($importer['importer_uid'])
3665                                                 );
3666                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3667
3668                                                 proc_run('php',"include/notifier.php","comment-import",$iid);
3669
3670                                         }
3671
3672                                         continue;
3673                                 }
3674
3675
3676
3677                                 $own = q("select name,url,thumb from contact where uid = %d and self = 1 limit 1",
3678                                         intval($importer['importer_uid'])
3679                                 );
3680
3681
3682                                 $datarray['type'] = 'remote-comment';
3683                                 $datarray['wall'] = 1;
3684                                 $datarray['parent-uri'] = $parent_uri;
3685                                 $datarray['uid'] = $importer['importer_uid'];
3686                                 $datarray['owner-name'] = $own[0]['name'];
3687                                 $datarray['owner-link'] = $own[0]['url'];
3688                                 $datarray['owner-avatar'] = $own[0]['thumb'];
3689                                 $datarray['contact-id'] = $importer['id'];
3690
3691                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3692                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3693                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3694                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3695                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3696                                         $is_like = true;
3697                                         $datarray['type'] = 'activity';
3698                                         $datarray['gravity'] = GRAVITY_LIKE;
3699                                         $datarray['last-child'] = 0;
3700                                         // only one like or dislike per person
3701                                         // splitted into two queries for performance issues
3702                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`parent-uri` = '%s') and deleted = 0 limit 1",
3703                                                 intval($datarray['uid']),
3704                                                 intval($datarray['contact-id']),
3705                                                 dbesc($datarray['verb']),
3706                                                 dbesc($datarray['parent-uri'])
3707
3708                                         );
3709                                         if($r && count($r))
3710                                                 continue;
3711
3712                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`thr-parent` = '%s') and deleted = 0 limit 1",
3713                                                 intval($datarray['uid']),
3714                                                 intval($datarray['contact-id']),
3715                                                 dbesc($datarray['verb']),
3716                                                 dbesc($datarray['parent-uri'])
3717
3718                                         );
3719                                         if($r && count($r))
3720                                                 continue;
3721                                 }
3722
3723                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3724
3725                                         $xo = parse_xml_string($datarray['object'],false);
3726                                         $xt = parse_xml_string($datarray['target'],false);
3727
3728                                         if(($xt->type == ACTIVITY_OBJ_NOTE) && ($xt->id)) {
3729
3730                                                 // fetch the parent item
3731
3732                                                 $tagp = q("select * from item where uri = '%s' and uid = %d limit 1",
3733                                                         dbesc($xt->id),
3734                                                         intval($importer['importer_uid'])
3735                                                 );
3736                                                 if(! count($tagp))
3737                                                         continue;
3738
3739                                                 // extract tag, if not duplicate, and this user allows tags, add to parent item
3740
3741                                                 if($xo->id && $xo->content) {
3742                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
3743                                                         if(! (stristr($tagp[0]['tag'],$newtag))) {
3744                                                                 $i = q("SELECT `blocktags` FROM `user` where `uid` = %d LIMIT 1",
3745                                                                         intval($importer['importer_uid'])
3746                                                                 );
3747                                                                 if(count($i) && ! intval($i[0]['blocktags'])) {
3748                                                                         q("UPDATE item SET tag = '%s', `edited` = '%s', `changed` = '%s' WHERE id = %d",
3749                                                                                 dbesc($tagp[0]['tag'] . (strlen($tagp[0]['tag']) ? ',' : '') . $newtag),
3750                                                                                 intval($tagp[0]['id']),
3751                                                                                 dbesc(datetime_convert()),
3752                                                                                 dbesc(datetime_convert())
3753                                                                         );
3754                                                                         create_tags_from_item($tagp[0]['id']);
3755                                                                 }
3756                                                         }
3757                                                 }
3758                                         }
3759                                 }
3760
3761
3762                                 $posted_id = item_store($datarray);
3763                                 $parent = 0;
3764
3765                                 if($posted_id) {
3766
3767                                         $datarray["id"] = $posted_id;
3768
3769                                         $r = q("SELECT `parent`, `parent-uri` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3770                                                 intval($posted_id),
3771                                                 intval($importer['importer_uid'])
3772                                         );
3773                                         if(count($r)) {
3774                                                 $parent = $r[0]['parent'];
3775                                                 $parent_uri = $r[0]['parent-uri'];
3776                                         }
3777
3778                                         if(! $is_like) {
3779                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
3780                                                         dbesc(datetime_convert()),
3781                                                         intval($importer['importer_uid']),
3782                                                         intval($r[0]['parent'])
3783                                                 );
3784
3785                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d",
3786                                                         dbesc(datetime_convert()),
3787                                                         intval($importer['importer_uid']),
3788                                                         intval($posted_id)
3789                                                 );
3790                                         }
3791
3792                                         if($posted_id && $parent) {
3793
3794                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
3795
3796                                                 if((! $is_like) && (! $importer['self'])) {
3797
3798                                                         require_once('include/enotify.php');
3799
3800                                                         notification(array(
3801                                                                 'type'         => NOTIFY_COMMENT,
3802                                                                 'notify_flags' => $importer['notify-flags'],
3803                                                                 'language'     => $importer['language'],
3804                                                                 'to_name'      => $importer['username'],
3805                                                                 'to_email'     => $importer['email'],
3806                                                                 'uid'          => $importer['importer_uid'],
3807                                                                 'item'         => $datarray,
3808                                                                 'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
3809                                                                 'source_name'  => stripslashes($datarray['author-name']),
3810                                                                 'source_link'  => $datarray['author-link'],
3811                                                                 'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
3812                                                                         ? $importer['thumb'] : $datarray['author-avatar']),
3813                                                                 'verb'         => ACTIVITY_POST,
3814                                                                 'otype'        => 'item',
3815                                                                 'parent'       => $parent,
3816                                                                 'parent_uri'   => $parent_uri,
3817                                                         ));
3818
3819                                                 }
3820                                         }
3821
3822                                         return 0;
3823                                         // NOTREACHED
3824                                 }
3825                         }
3826                         else {
3827
3828                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
3829
3830                                 $item_id  = $item->get_id();
3831                                 $datarray = get_atom_elements($feed,$item);
3832
3833                                 if($importer['rel'] == CONTACT_IS_FOLLOWER)
3834                                         continue;
3835
3836                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3837                                         dbesc($item_id),
3838                                         intval($importer['importer_uid'])
3839                                 );
3840
3841                                 // Update content if 'updated' changes
3842
3843                                 if(count($r)) {
3844                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3845
3846                                                 // do not accept (ignore) an earlier edit than one we currently have.
3847                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3848                                                         continue;
3849
3850                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3851                                                         dbesc($datarray['title']),
3852                                                         dbesc($datarray['body']),
3853                                                         dbesc($datarray['tag']),
3854                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3855                                                         dbesc(datetime_convert()),
3856                                                         dbesc($item_id),
3857                                                         intval($importer['importer_uid'])
3858                                                 );
3859                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3860                                         }
3861
3862                                         // update last-child if it changes
3863
3864                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
3865                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
3866                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
3867                                                         dbesc(datetime_convert()),
3868                                                         dbesc($parent_uri),
3869                                                         intval($importer['importer_uid'])
3870                                                 );
3871                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
3872                                                         intval($allow[0]['data']),
3873                                                         dbesc(datetime_convert()),
3874                                                         dbesc($item_id),
3875                                                         intval($importer['importer_uid'])
3876                                                 );
3877                                         }
3878                                         continue;
3879                                 }
3880
3881                                 $datarray['parent-uri'] = $parent_uri;
3882                                 $datarray['uid'] = $importer['importer_uid'];
3883                                 $datarray['contact-id'] = $importer['id'];
3884                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3885                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3886                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3887                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3888                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3889                                         $datarray['type'] = 'activity';
3890                                         $datarray['gravity'] = GRAVITY_LIKE;
3891                                         // only one like or dislike per person
3892                                         // splitted into two queries for performance issues
3893                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
3894                                                 intval($datarray['uid']),
3895                                                 intval($datarray['contact-id']),
3896                                                 dbesc($datarray['verb']),
3897                                                 dbesc($parent_uri)
3898                                         );
3899                                         if($r && count($r))
3900                                                 continue;
3901
3902                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
3903                                                 intval($datarray['uid']),
3904                                                 intval($datarray['contact-id']),
3905                                                 dbesc($datarray['verb']),
3906                                                 dbesc($parent_uri)
3907                                         );
3908                                         if($r && count($r))
3909                                                 continue;
3910
3911                                 }
3912
3913                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3914
3915                                         $xo = parse_xml_string($datarray['object'],false);
3916                                         $xt = parse_xml_string($datarray['target'],false);
3917
3918                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
3919                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
3920                                                         dbesc($xt->id),
3921                                                         intval($importer['importer_uid'])
3922                                                 );
3923                                                 if(! count($r))
3924                                                         continue;
3925
3926                                                 // extract tag, if not duplicate, add to parent item
3927                                                 if($xo->content) {
3928                                                         if(! (stristr($r[0]['tag'],trim($xo->content)))) {
3929                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
3930                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
3931                                                                         intval($r[0]['id'])
3932                                                                 );
3933                                                                 create_tags_from_item($r[0]['id']);
3934                                                         }
3935                                                 }
3936                                         }
3937                                 }
3938
3939                                 $posted_id = item_store($datarray);
3940
3941                                 // find out if our user is involved in this conversation and wants to be notified.
3942
3943                                 if(!x($datarray['type']) || $datarray['type'] != 'activity') {
3944
3945                                         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0",
3946                                                 dbesc($top_uri),
3947                                                 intval($importer['importer_uid'])
3948                                         );
3949
3950                                         if(count($myconv)) {
3951                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
3952
3953                                                 // first make sure this isn't our own post coming back to us from a wall-to-wall event
3954                                                 if(! link_compare($datarray['author-link'],$importer_url)) {
3955
3956
3957                                                         foreach($myconv as $conv) {
3958
3959                                                                 // now if we find a match, it means we're in this conversation
3960
3961                                                                 if(! link_compare($conv['author-link'],$importer_url))
3962                                                                         continue;
3963
3964                                                                 require_once('include/enotify.php');
3965
3966                                                                 $conv_parent = $conv['parent'];
3967
3968                                                                 notification(array(
3969                                                                         'type'         => NOTIFY_COMMENT,
3970                                                                         'notify_flags' => $importer['notify-flags'],
3971                                                                         'language'     => $importer['language'],
3972                                                                         'to_name'      => $importer['username'],
3973                                                                         'to_email'     => $importer['email'],
3974                                                                         'uid'          => $importer['importer_uid'],
3975                                                                         'item'         => $datarray,
3976                                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
3977                                                                         'source_name'  => stripslashes($datarray['author-name']),
3978                                                                         'source_link'  => $datarray['author-link'],
3979                                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
3980                                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
3981                                                                         'verb'         => ACTIVITY_POST,
3982                                                                         'otype'        => 'item',
3983                                                                         'parent'       => $conv_parent,
3984                                                                         'parent_uri'   => $parent_uri
3985
3986                                                                 ));
3987
3988                                                                 // only send one notification
3989                                                                 break;
3990                                                         }
3991                                                 }
3992                                         }
3993                                 }
3994                                 continue;
3995                         }
3996                 }
3997
3998                 else {
3999
4000                         // Head post of a conversation. Have we seen it? If not, import it.
4001
4002
4003                         $item_id  = $item->get_id();
4004                         $datarray = get_atom_elements($feed,$item);
4005
4006                         if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
4007                                 $ev = bbtoevent($datarray['body']);
4008                                 if((x($ev,'desc') || x($ev,'summary')) && x($ev,'start')) {
4009                                         $ev['cid'] = $importer['id'];
4010                                         $ev['uid'] = $importer['uid'];
4011                                         $ev['uri'] = $item_id;
4012                                         $ev['edited'] = $datarray['edited'];
4013                                         $ev['private'] = $datarray['private'];
4014                                         $ev['guid'] = $datarray['guid'];
4015
4016                                         $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4017                                                 dbesc($item_id),
4018                                                 intval($importer['uid'])
4019                                         );
4020                                         if(count($r))
4021                                                 $ev['id'] = $r[0]['id'];
4022                                         $xyz = event_store($ev);
4023                                         continue;
4024                                 }
4025                         }
4026
4027                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4028                                 dbesc($item_id),
4029                                 intval($importer['importer_uid'])
4030                         );
4031
4032                         // Update content if 'updated' changes
4033
4034                         if(count($r)) {
4035                                 if (edited_timestamp_is_newer($r[0], $datarray)) {
4036
4037                                         // do not accept (ignore) an earlier edit than one we currently have.
4038                                         if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
4039                                                 continue;
4040
4041                                         $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4042                                                 dbesc($datarray['title']),
4043                                                 dbesc($datarray['body']),
4044                                                 dbesc($datarray['tag']),
4045                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
4046                                                 dbesc(datetime_convert()),
4047                                                 dbesc($item_id),
4048                                                 intval($importer['importer_uid'])
4049                                         );
4050                                         create_tags_from_itemuri($item_id, $importer['importer_uid']);
4051                                         update_thread_uri($item_id, $importer['importer_uid']);
4052                                 }
4053
4054                                 // update last-child if it changes
4055
4056                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
4057                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
4058                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4059                                                 intval($allow[0]['data']),
4060                                                 dbesc(datetime_convert()),
4061                                                 dbesc($item_id),
4062                                                 intval($importer['importer_uid'])
4063                                         );
4064                                 }
4065                                 continue;
4066                         }
4067
4068                         $datarray['parent-uri'] = $item_id;
4069                         $datarray['uid'] = $importer['importer_uid'];
4070                         $datarray['contact-id'] = $importer['id'];
4071
4072
4073                         if(! link_compare($datarray['owner-link'],$importer['url'])) {
4074                                 // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
4075                                 // but otherwise there's a possible data mixup on the sender's system.
4076                                 // the tgroup delivery code called from item_store will correct it if it's a forum,
4077                                 // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
4078                                 logger('local_delivery: Correcting item owner.', LOGGER_DEBUG);
4079                                 $datarray['owner-name']   = $importer['senderName'];
4080                                 $datarray['owner-link']   = $importer['url'];
4081                                 $datarray['owner-avatar'] = $importer['thumb'];
4082                         }
4083
4084                         if(($importer['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['importer_uid'],$datarray)))
4085                                 continue;
4086
4087                         // This is my contact on another system, but it's really me.
4088                         // Turn this into a wall post.
4089                         $notify = item_is_remote_self($importer, $datarray);
4090
4091                         $posted_id = item_store($datarray, false, $notify);
4092
4093                         if(stristr($datarray['verb'],ACTIVITY_POKE)) {
4094                                 $verb = urldecode(substr($datarray['verb'],strpos($datarray['verb'],'#')+1));
4095                                 if(! $verb)
4096                                         continue;
4097                                 $xo = parse_xml_string($datarray['object'],false);
4098
4099                                 if(($xo->type == ACTIVITY_OBJ_PERSON) && ($xo->id)) {
4100
4101                                         // somebody was poked/prodded. Was it me?
4102
4103                                         $links = parse_xml_string("<links>".unxmlify($xo->link)."</links>",false);
4104
4105                                 foreach($links->link as $l) {
4106                                 $atts = $l->attributes();
4107                                 switch($atts['rel']) {
4108                                         case "alternate":
4109                                                                 $Blink = $atts['href'];
4110                                                                 break;
4111                                                         default:
4112                                                                 break;
4113                                     }
4114                                 }
4115                                         if($Blink && link_compare($Blink,$a->get_baseurl() . '/profile/' . $importer['nickname'])) {
4116
4117                                                 // send a notification
4118                                                 require_once('include/enotify.php');
4119
4120                                                 notification(array(
4121                                                         'type'         => NOTIFY_POKE,
4122                                                         'notify_flags' => $importer['notify-flags'],
4123                                                         'language'     => $importer['language'],
4124                                                         'to_name'      => $importer['username'],
4125                                                         'to_email'     => $importer['email'],
4126                                                         'uid'          => $importer['importer_uid'],
4127                                                         'item'         => $datarray,
4128                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4129                                                         'source_name'  => stripslashes($datarray['author-name']),
4130                                                         'source_link'  => $datarray['author-link'],
4131                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4132                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4133                                                         'verb'         => $datarray['verb'],
4134                                                         'otype'        => 'person',
4135                                                         'activity'     => $verb,
4136                                                         'parent'       => $datarray['parent']
4137                                                 ));
4138                                         }
4139                                 }
4140                         }
4141
4142                         continue;
4143                 }
4144         }
4145
4146         return 0;
4147         // NOTREACHED
4148
4149 }
4150
4151
4152 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
4153         $url = notags(trim($datarray['author-link']));
4154         $name = notags(trim($datarray['author-name']));
4155         $photo = notags(trim($datarray['author-avatar']));
4156
4157         if (is_object($item)) {
4158                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
4159                 if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
4160                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
4161         } else
4162                 $nick = $item;
4163
4164         if(is_array($contact)) {
4165                 if(($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
4166                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
4167                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
4168                                 intval(CONTACT_IS_FRIEND),
4169                                 intval($contact['id']),
4170                                 intval($importer['uid'])
4171                         );
4172                 }
4173                 // send email notification to owner?
4174         }
4175         else {
4176
4177                 // create contact record
4178
4179                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
4180                         `blocked`, `readonly`, `pending`, `writable` )
4181                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
4182                         intval($importer['uid']),
4183                         dbesc(datetime_convert()),
4184                         dbesc($url),
4185                         dbesc(normalise_link($url)),
4186                         dbesc($name),
4187                         dbesc($nick),
4188                         dbesc($photo),
4189                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
4190                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
4191                 );
4192                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
4193                                 intval($importer['uid']),
4194                                 dbesc($url)
4195                 );
4196                 if(count($r))
4197                                 $contact_record = $r[0];
4198
4199                 // create notification
4200                 $hash = random_string();
4201
4202                 if(is_array($contact_record)) {
4203                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
4204                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
4205                                 intval($importer['uid']),
4206                                 intval($contact_record['id']),
4207                                 dbesc($hash),
4208                                 dbesc(datetime_convert())
4209                         );
4210                 }
4211
4212                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
4213                         intval($importer['uid'])
4214                 );
4215                 $a = get_app();
4216                 if(count($r)) {
4217
4218                         if(intval($r[0]['def_gid'])) {
4219                                 require_once('include/group.php');
4220                                 group_add_member($r[0]['uid'],'',$contact_record['id'],$r[0]['def_gid']);
4221                         }
4222
4223                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) &&
4224                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE))) {
4225
4226                                 notification(array(
4227                                         'type'         => NOTIFY_INTRO,
4228                                         'notify_flags' => $r[0]['notify-flags'],
4229                                         'language'     => $r[0]['language'],
4230                                         'to_name'      => $r[0]['username'],
4231                                         'to_email'     => $r[0]['email'],
4232                                         'uid'          => $r[0]['uid'],
4233                                         'link'             => $a->get_baseurl() . '/notifications/intro',
4234                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
4235                                         'source_link'  => $contact_record['url'],
4236                                         'source_photo' => $contact_record['photo'],
4237                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
4238                                         'otype'        => 'intro'
4239                                 ));
4240
4241                         }
4242                 }
4243         }
4244 }
4245
4246 function lose_follower($importer,$contact,$datarray,$item) {
4247
4248         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
4249                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4250                         intval(CONTACT_IS_SHARING),
4251                         intval($contact['id'])
4252                 );
4253         }
4254         else {
4255                 contact_remove($contact['id']);
4256         }
4257 }
4258
4259 function lose_sharer($importer,$contact,$datarray,$item) {
4260
4261         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
4262                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4263                         intval(CONTACT_IS_FOLLOWER),
4264                         intval($contact['id'])
4265                 );
4266         }
4267         else {
4268                 contact_remove($contact['id']);
4269         }
4270 }
4271
4272
4273 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
4274
4275         $a = get_app();
4276
4277         if(is_array($importer)) {
4278                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
4279                         intval($importer['uid'])
4280                 );
4281         }
4282
4283         // Diaspora has different message-ids in feeds than they do
4284         // through the direct Diaspora protocol. If we try and use
4285         // the feed, we'll get duplicates. So don't.
4286
4287         if((! count($r)) || $contact['network'] === NETWORK_DIASPORA)
4288                 return;
4289
4290         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
4291
4292         // Use a single verify token, even if multiple hubs
4293
4294         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
4295
4296         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
4297
4298         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
4299
4300         if(!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
4301                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
4302                         dbesc($verify_token),
4303                         intval($contact['id'])
4304                 );
4305         }
4306
4307         post_url($url,$params);
4308
4309         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
4310
4311         return;
4312
4313 }
4314
4315
4316 function atom_author($tag,$name,$uri,$h,$w,$photo,$geo) {
4317         $o = '';
4318         if(! $tag)
4319                 return $o;
4320         $name = xmlify($name);
4321         $uri = xmlify($uri);
4322         $h = intval($h);
4323         $w = intval($w);
4324         $photo = xmlify($photo);
4325
4326
4327         $o .= "<$tag>\r\n";
4328         $o .= "\t<name>$name</name>\r\n";
4329         $o .= "\t<uri>$uri</uri>\r\n";
4330         $o .= "\t".'<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4331         $o .= "\t".'<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4332
4333         if ($tag == "author") {
4334
4335                 if($geo)
4336                         $o .= '<georss:point>'.xmlify($geo).'</georss:point>'."\r\n";
4337
4338                 $r = q("SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
4339                                 `profile`.`name`, `profile`.`pub_keywords`, `profile`.`about`,
4340                                 `profile`.`homepage`,`contact`.`nick` FROM `profile`
4341                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
4342                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
4343                                 WHERE `profile`.`is-default` AND `contact`.`self` AND
4344                                         NOT `user`.`hidewall` AND `contact`.`nurl`='%s'",
4345                         dbesc(normalise_link($uri)));
4346                 if ($r) {
4347                         $location = '';
4348                         if($r[0]['locality'])
4349                                 $location .= $r[0]['locality'];
4350                         if($r[0]['region']) {
4351                                 if($location)
4352                                         $location .= ', ';
4353                                 $location .= $r[0]['region'];
4354                         }
4355                         if($r[0]['country-name']) {
4356                                 if($location)
4357                                         $location .= ', ';
4358                                 $location .= $r[0]['country-name'];
4359                         }
4360
4361                         $o .= "\t<poco:preferredUsername>".xmlify($r[0]["nick"])."</poco:preferredUsername>\r\n";
4362                         $o .= "\t<poco:displayName>".xmlify($r[0]["name"])."</poco:displayName>\r\n";
4363                         $o .= "\t<poco:note>".xmlify($r[0]["about"])."</poco:note>\r\n";
4364                         $o .= "\t<poco:address>\r\n";
4365                         $o .= "\t\t<poco:formatted>".xmlify($location)."</poco:formatted>\r\n";
4366                         $o .= "\t</poco:address>\r\n";
4367                         $o .= "\t<poco:urls>\r\n";
4368                         $o .= "\t<poco:type>homepage</poco:type>\r\n";
4369                         $o .= "\t\t<poco:value>".xmlify($r[0]["homepage"])."</poco:value>\r\n";
4370                         $o .= "\t\t<poco:primary>true</poco:primary>\r\n";
4371                         $o .= "\t</poco:urls>\r\n";
4372                 }
4373         }
4374
4375         call_hooks('atom_author', $o);
4376
4377         $o .= "</$tag>\r\n";
4378         return $o;
4379 }
4380
4381 function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
4382
4383         $a = get_app();
4384
4385         if(! $item['parent'])
4386                 return;
4387
4388         if($item['deleted'])
4389                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
4390
4391
4392         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
4393                 $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid);
4394         else
4395                 $body = $item['body'];
4396
4397
4398         $o = "\r\n\r\n<entry>\r\n";
4399
4400         if(is_array($author))
4401                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb'], $item['coord']);
4402         else
4403                 $o .= atom_author('author',(($item['author-name']) ? $item['author-name'] : $item['name']),(($item['author-link']) ? $item['author-link'] : $item['url']),80,80,(($item['author-avatar']) ? $item['author-avatar'] : $item['thumb']), $item['coord']);
4404         if(strlen($item['owner-name']))
4405                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar'], $item['coord']);
4406
4407         if(($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
4408                 $parent = q("SELECT `guid` FROM `item` WHERE `id` = %d", intval($item["parent"]));
4409                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
4410                 $o .= '<thr:in-reply-to ref="'.xmlify($parent_item).'" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$parent[0]['guid']).'" />'."\r\n";
4411         }
4412
4413         $htmlbody = $body;
4414
4415         if ($item['title'] != "")
4416                 $htmlbody = "[b]".$item['title']."[/b]\n\n".$htmlbody;
4417
4418         $htmlbody = bbcode($htmlbody, false, false, 7);
4419
4420         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
4421         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
4422         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
4423         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
4424         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
4425         $o .= '<content type="' . $type . '" >' . xmlify((($type === 'html') ? $htmlbody : $body)) . '</content>' . "\r\n";
4426         $o .= '<link rel="alternate" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$item['guid']).'" />'."\r\n";
4427
4428         $o .= '<status_net notice_id="'.$item['id'].'"></status_net>'."\r\n";
4429
4430         if($comment)
4431                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
4432
4433         if($item['location']) {
4434                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
4435                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
4436         }
4437
4438         if($item['coord'])
4439                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
4440
4441         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
4442                 $o .= '<dfrn:private>' . (($item['private']) ? $item['private'] : 1) . '</dfrn:private>' . "\r\n";
4443
4444         if($item['extid'])
4445                 $o .= '<dfrn:extid>' . xmlify($item['extid']) . '</dfrn:extid>' . "\r\n";
4446         if($item['bookmark'])
4447                 $o .= '<dfrn:bookmark>true</dfrn:bookmark>' . "\r\n";
4448
4449         if($item['app'])
4450                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
4451
4452         if($item['guid'])
4453                 $o .= '<dfrn:diaspora_guid>' . $item['guid'] . '</dfrn:diaspora_guid>' . "\r\n";
4454
4455         if($item['signed_text']) {
4456                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
4457                 $o .= '<dfrn:diaspora_signature>' . xmlify($sign) . '</dfrn:diaspora_signature>' . "\r\n";
4458         }
4459
4460         $verb = construct_verb($item);
4461         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
4462         $actobj = construct_activity_object($item);
4463         if(strlen($actobj))
4464                 $o .= $actobj;
4465         $actarg = construct_activity_target($item);
4466         if(strlen($actarg))
4467                 $o .= $actarg;
4468
4469         $tags = item_getfeedtags($item);
4470         if(count($tags)) {
4471                 foreach($tags as $t)
4472                         if (($type != 'html') OR ($t[0] != "@"))
4473                                 $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
4474         }
4475
4476         // To-Do:
4477         // To support these elements, the API needs to be enhanced
4478         //$o .= '<link rel="ostatus:conversation" href="'.xmlify($a->get_baseurl().'/display/'.$owner['nickname'].'/'.$item['parent']).'"/>'."\r\n";
4479         //$o .= "\t".'<link rel="self" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4480         //$o .= "\t".'<link rel="edit" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4481
4482         // Deactivated since it was meant only for OStatus
4483         //$o .= item_get_attachment($item);
4484
4485         $o .= item_getfeedattach($item);
4486
4487         $mentioned = get_mentions($item);
4488         if($mentioned)
4489                 $o .= $mentioned;
4490
4491         call_hooks('atom_entry', $o);
4492
4493         $o .= '</entry>' . "\r\n";
4494
4495         return $o;
4496 }
4497
4498 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
4499
4500         if(get_config('system','disable_embedded'))
4501                 return $s;
4502
4503         $a = get_app();
4504
4505         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
4506         $site = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://'));
4507
4508         $orig_body = $s;
4509         $new_body = '';
4510
4511         $img_start = strpos($orig_body, '[img');
4512         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4513         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4514         while( ($img_st_close !== false) && ($img_len !== false) ) {
4515
4516                 $img_st_close++; // make it point to AFTER the closing bracket
4517                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
4518
4519                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
4520
4521
4522                 if(stristr($image , $site . '/photo/')) {
4523                         // Only embed locally hosted photos
4524                         $replace = false;
4525                         $i = basename($image);
4526                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
4527                         $x = strpos($i,'-');
4528
4529                         if($x) {
4530                                 $res = substr($i,$x+1);
4531                                 $i = substr($i,0,$x);
4532                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
4533                                         dbesc($i),
4534                                         intval($res),
4535                                         intval($uid)
4536                                 );
4537                                 if($r) {
4538
4539                                         // Check to see if we should replace this photo link with an embedded image
4540                                         // 1. No need to do so if the photo is public
4541                                         // 2. If there's a contact-id provided, see if they're in the access list
4542                                         //    for the photo. If so, embed it.
4543                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
4544                                         //    permissions, regardless of order but first check to see if they're an exact
4545                                         //    match to save some processing overhead.
4546
4547                                         if(has_permissions($r[0])) {
4548                                                 if($cid) {
4549                                                         $recips = enumerate_permissions($r[0]);
4550                                                         if(in_array($cid, $recips)) {
4551                                                                 $replace = true;
4552                                                         }
4553                                                 }
4554                                                 elseif($item) {
4555                                                         if(compare_permissions($item,$r[0]))
4556                                                                 $replace = true;
4557                                                 }
4558                                         }
4559                                         if($replace) {
4560                                                 $data = $r[0]['data'];
4561                                                 $type = $r[0]['type'];
4562
4563                                                 // If a custom width and height were specified, apply before embedding
4564                                                 if(preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
4565                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
4566
4567                                                         $width = intval($match[1]);
4568                                                         $height = intval($match[2]);
4569
4570                                                         $ph = new Photo($data, $type);
4571                                                         if($ph->is_valid()) {
4572                                                                 $ph->scaleImage(max($width, $height));
4573                                                                 $data = $ph->imageString();
4574                                                                 $type = $ph->getType();
4575                                                         }
4576                                                 }
4577
4578                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
4579                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
4580                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
4581                                         }
4582                                 }
4583                         }
4584                 }
4585
4586                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
4587                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
4588                 if($orig_body === false)
4589                         $orig_body = '';
4590
4591                 $img_start = strpos($orig_body, '[img');
4592                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4593                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4594         }
4595
4596         $new_body = $new_body . $orig_body;
4597
4598         return($new_body);
4599 }
4600
4601
4602 function has_permissions($obj) {
4603         if(($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
4604                 return true;
4605         return false;
4606 }
4607
4608 function compare_permissions($obj1,$obj2) {
4609         // first part is easy. Check that these are exactly the same.
4610         if(($obj1['allow_cid'] == $obj2['allow_cid'])
4611                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
4612                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
4613                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
4614                 return true;
4615
4616         // This is harder. Parse all the permissions and compare the resulting set.
4617
4618         $recipients1 = enumerate_permissions($obj1);
4619         $recipients2 = enumerate_permissions($obj2);
4620         sort($recipients1);
4621         sort($recipients2);
4622         if($recipients1 == $recipients2)
4623                 return true;
4624         return false;
4625 }
4626
4627 // returns an array of contact-ids that are allowed to see this object
4628
4629 function enumerate_permissions($obj) {
4630         require_once('include/group.php');
4631         $allow_people = expand_acl($obj['allow_cid']);
4632         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
4633         $deny_people  = expand_acl($obj['deny_cid']);
4634         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
4635         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
4636         $deny         = array_unique(array_merge($deny_people,$deny_groups));
4637         $recipients   = array_diff($recipients,$deny);
4638         return $recipients;
4639 }
4640
4641 function item_getfeedtags($item) {
4642         $ret = array();
4643         $matches = false;
4644         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4645         if($cnt) {
4646                 for($x = 0; $x < $cnt; $x ++) {
4647                         if($matches[1][$x])
4648                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
4649                 }
4650         }
4651         $matches = false;
4652         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4653         if($cnt) {
4654                 for($x = 0; $x < $cnt; $x ++) {
4655                         if($matches[1][$x])
4656                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
4657                 }
4658         }
4659         return $ret;
4660 }
4661
4662 function item_get_attachment($item) {
4663         $o = "";
4664         $siteinfo = get_attached_data($item["body"]);
4665
4666         switch($siteinfo["type"]) {
4667                 case 'link':
4668                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4669                         break;
4670                 case 'photo':
4671                         $imgdata = get_photo_info($siteinfo["image"]);
4672                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["image"]).'" type="'.$imgdata["mime"].'" length="'.$imgdata["size"].'"/>'."\r\n";
4673                         break;
4674                 case 'video':
4675                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4676                         break;
4677                 default:
4678                         break;
4679         }
4680
4681         return $o;
4682 }
4683
4684 function item_getfeedattach($item) {
4685         $ret = '';
4686         $arr = explode('[/attach],',$item['attach']);
4687         if(count($arr)) {
4688                 foreach($arr as $r) {
4689                         $matches = false;
4690                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches);
4691                         if($cnt) {
4692                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
4693                                 if(intval($matches[2]))
4694                                         $ret .= 'length="' . intval($matches[2]) . '" ';
4695                                 if($matches[4] !== ' ')
4696                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
4697                                 $ret .= ' />' . "\r\n";
4698                         }
4699                 }
4700         }
4701         return $ret;
4702 }
4703
4704
4705
4706 function item_expire($uid, $days, $network = "", $force = false) {
4707
4708         if((! $uid) || ($days < 1))
4709                 return;
4710
4711         // $expire_network_only = save your own wall posts
4712         // and just expire conversations started by others
4713
4714         $expire_network_only = get_pconfig($uid,'expire','network_only');
4715         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
4716
4717         if ($network != "") {
4718                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
4719                 // There is an index "uid_network_received" but not "uid_network_created"
4720                 // This avoids the creation of another index just for one purpose.
4721                 // And it doesn't really matter wether to look at "received" or "created"
4722                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4723         } else
4724                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4725
4726         $r = q("SELECT * FROM `item`
4727                 WHERE `uid` = %d $range
4728                 AND `id` = `parent`
4729                 $sql_extra
4730                 AND `deleted` = 0",
4731                 intval($uid),
4732                 intval($days)
4733         );
4734
4735         if(! count($r))
4736                 return;
4737
4738         $expire_items = get_pconfig($uid, 'expire','items');
4739         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
4740
4741         // Forcing expiring of items - but not notes and marked items
4742         if ($force)
4743                 $expire_items = true;
4744
4745         $expire_notes = get_pconfig($uid, 'expire','notes');
4746         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
4747
4748         $expire_starred = get_pconfig($uid, 'expire','starred');
4749         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
4750
4751         $expire_photos = get_pconfig($uid, 'expire','photos');
4752         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
4753
4754         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
4755
4756         foreach($r as $item) {
4757
4758                 // don't expire filed items
4759
4760                 if(strpos($item['file'],'[') !== false)
4761                         continue;
4762
4763                 // Only expire posts, not photos and photo comments
4764
4765                 if($expire_photos==0 && strlen($item['resource-id']))
4766                         continue;
4767                 if($expire_starred==0 && intval($item['starred']))
4768                         continue;
4769                 if($expire_notes==0 && $item['type']=='note')
4770                         continue;
4771                 if($expire_items==0 && $item['type']!='note')
4772                         continue;
4773
4774                 drop_item($item['id'],false);
4775         }
4776
4777         proc_run('php',"include/notifier.php","expire","$uid");
4778
4779 }
4780
4781
4782 function drop_items($items) {
4783         $uid = 0;
4784
4785         if(! local_user() && ! remote_user())
4786                 return;
4787
4788         if(count($items)) {
4789                 foreach($items as $item) {
4790                         $owner = drop_item($item,false);
4791                         if($owner && ! $uid)
4792                                 $uid = $owner;
4793                 }
4794         }
4795
4796         // multiple threads may have been deleted, send an expire notification
4797
4798         if($uid)
4799                 proc_run('php',"include/notifier.php","expire","$uid");
4800 }
4801
4802
4803 function drop_item($id,$interactive = true) {
4804
4805         $a = get_app();
4806
4807         // locate item to be deleted
4808
4809         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
4810                 intval($id)
4811         );
4812
4813         if(! count($r)) {
4814                 if(! $interactive)
4815                         return 0;
4816                 notice( t('Item not found.') . EOL);
4817                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4818         }
4819
4820         $item = $r[0];
4821
4822         $owner = $item['uid'];
4823
4824         $cid = 0;
4825
4826         // check if logged in user is either the author or owner of this item
4827
4828         if(is_array($_SESSION['remote'])) {
4829                 foreach($_SESSION['remote'] as $visitor) {
4830                         if($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
4831                                 $cid = $visitor['cid'];
4832                                 break;
4833                         }
4834                 }
4835         }
4836
4837
4838         if((local_user() == $item['uid']) || ($cid) || (! $interactive)) {
4839
4840                 // Check if we should do HTML-based delete confirmation
4841                 if($_REQUEST['confirm']) {
4842                         // <form> can't take arguments in its "action" parameter
4843                         // so add any arguments as hidden inputs
4844                         $query = explode_querystring($a->query_string);
4845                         $inputs = array();
4846                         foreach($query['args'] as $arg) {
4847                                 if(strpos($arg, 'confirm=') === false) {
4848                                         $arg_parts = explode('=', $arg);
4849                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
4850                                 }
4851                         }
4852
4853                         return replace_macros(get_markup_template('confirm.tpl'), array(
4854                                 '$method' => 'get',
4855                                 '$message' => t('Do you really want to delete this item?'),
4856                                 '$extra_inputs' => $inputs,
4857                                 '$confirm' => t('Yes'),
4858                                 '$confirm_url' => $query['base'],
4859                                 '$confirm_name' => 'confirmed',
4860                                 '$cancel' => t('Cancel'),
4861                         ));
4862                 }
4863                 // Now check how the user responded to the confirmation query
4864                 if($_REQUEST['canceled']) {
4865                         goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4866                 }
4867
4868                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
4869                 // delete the item
4870
4871                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
4872                         dbesc(datetime_convert()),
4873                         dbesc(datetime_convert()),
4874                         intval($item['id'])
4875                 );
4876                 create_tags_from_item($item['id']);
4877                 create_files_from_item($item['id']);
4878                 delete_thread($item['id'], $item['parent-uri']);
4879
4880                 // clean up categories and tags so they don't end up as orphans
4881
4882                 $matches = false;
4883                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
4884                 if($cnt) {
4885                         foreach($matches as $mtch) {
4886                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
4887                         }
4888                 }
4889
4890                 $matches = false;
4891
4892                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
4893                 if($cnt) {
4894                         foreach($matches as $mtch) {
4895                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
4896                         }
4897                 }
4898
4899                 // If item is a link to a photo resource, nuke all the associated photos
4900                 // (visitors will not have photo resources)
4901                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
4902                 // generate a resource-id and therefore aren't intimately linked to the item.
4903
4904                 if(strlen($item['resource-id'])) {
4905                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
4906                                 dbesc($item['resource-id']),
4907                                 intval($item['uid'])
4908                         );
4909                         // ignore the result
4910                 }
4911
4912                 // If item is a link to an event, nuke the event record.
4913
4914                 if(intval($item['event-id'])) {
4915                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
4916                                 intval($item['event-id']),
4917                                 intval($item['uid'])
4918                         );
4919                         // ignore the result
4920                 }
4921
4922                 // If item has attachments, drop them
4923
4924                 foreach(explode(",",$item['attach']) as $attach){
4925                         preg_match("|attach/(\d+)|", $attach, $matches);
4926                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
4927                                 intval($matches[1]),
4928                                 local_user()
4929                         );
4930                         // ignore the result
4931                 }
4932
4933
4934                 // clean up item_id and sign meta-data tables
4935
4936                 /*
4937                 // Old code - caused very long queries and warning entries in the mysql logfiles:
4938
4939                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
4940                         intval($item['id']),
4941                         intval($item['uid'])
4942                 );
4943
4944                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
4945                         intval($item['id']),
4946                         intval($item['uid'])
4947                 );
4948                 */
4949
4950                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
4951
4952                 // Creating list of parents
4953                 $r = q("select id from item where parent = %d and uid = %d",
4954                         intval($item['id']),
4955                         intval($item['uid'])
4956                 );
4957
4958                 $parentid = "";
4959
4960                 foreach ($r AS $row) {
4961                         if ($parentid != "")
4962                                 $parentid .= ", ";
4963
4964                         $parentid .= $row["id"];
4965                 }
4966
4967                 // Now delete them
4968                 if ($parentid != "") {
4969                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
4970
4971                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
4972                 }
4973
4974                 // If it's the parent of a comment thread, kill all the kids
4975
4976                 if($item['uri'] == $item['parent-uri']) {
4977                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
4978                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
4979                                 dbesc(datetime_convert()),
4980                                 dbesc(datetime_convert()),
4981                                 dbesc($item['parent-uri']),
4982                                 intval($item['uid'])
4983                         );
4984                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
4985                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
4986                         delete_thread_uri($item['parent-uri'], $item['uid']);
4987                         // ignore the result
4988                 }
4989                 else {
4990                         // ensure that last-child is set in case the comment that had it just got wiped.
4991                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
4992                                 dbesc(datetime_convert()),
4993                                 dbesc($item['parent-uri']),
4994                                 intval($item['uid'])
4995                         );
4996                         // who is the last child now?
4997                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
4998                                 dbesc($item['parent-uri']),
4999                                 intval($item['uid'])
5000                         );
5001                         if(count($r)) {
5002                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
5003                                         intval($r[0]['id'])
5004                                 );
5005                         }
5006
5007                         // Add a relayable_retraction signature for Diaspora.
5008                         store_diaspora_retract_sig($item, $a->user, $a->get_baseurl());
5009                 }
5010
5011                 $drop_id = intval($item['id']);
5012
5013                 // send the notification upstream/downstream as the case may be
5014
5015                 proc_run('php',"include/notifier.php","drop","$drop_id");
5016
5017                 if(! $interactive)
5018                         return $owner;
5019                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5020                 //NOTREACHED
5021         }
5022         else {
5023                 if(! $interactive)
5024                         return 0;
5025                 notice( t('Permission denied.') . EOL);
5026                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5027                 //NOTREACHED
5028         }
5029
5030 }
5031
5032
5033 function first_post_date($uid,$wall = false) {
5034         $r = q("select id, created from item
5035                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
5036                 and id = parent
5037                 order by created asc limit 1",
5038                 intval($uid),
5039                 intval($wall ? 1 : 0)
5040         );
5041         if(count($r)) {
5042 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
5043                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
5044         }
5045         return false;
5046 }
5047
5048 /* modified posted_dates() {below} to arrange the list in years */
5049 function list_post_dates($uid, $wall) {
5050         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5051
5052         $dthen = first_post_date($uid, $wall);
5053         if(! $dthen)
5054                 return array();
5055
5056         // Set the start and end date to the beginning of the month
5057         $dnow = substr($dnow,0,8).'01';
5058         $dthen = substr($dthen,0,8).'01';
5059
5060         $ret = array();
5061
5062         // Starting with the current month, get the first and last days of every
5063         // month down to and including the month of the first post
5064         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5065                 $dyear = intval(substr($dnow,0,4));
5066                 $dstart = substr($dnow,0,8) . '01';
5067                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5068                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5069                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5070                 $str = day_translate(datetime_convert('','',$dnow,'F'));
5071                 if(! $ret[$dyear])
5072                         $ret[$dyear] = array();
5073                 $ret[$dyear][] = array($str,$end_month,$start_month);
5074                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5075         }
5076         return $ret;
5077 }
5078
5079 function posted_dates($uid,$wall) {
5080         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5081
5082         $dthen = first_post_date($uid,$wall);
5083         if(! $dthen)
5084                 return array();
5085
5086         // Set the start and end date to the beginning of the month
5087         $dnow = substr($dnow,0,8).'01';
5088         $dthen = substr($dthen,0,8).'01';
5089
5090         $ret = array();
5091         // Starting with the current month, get the first and last days of every
5092         // month down to and including the month of the first post
5093         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5094                 $dstart = substr($dnow,0,8) . '01';
5095                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5096                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5097                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5098                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
5099                 $ret[] = array($str,$end_month,$start_month);
5100                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5101         }
5102         return $ret;
5103 }
5104
5105
5106 function posted_date_widget($url,$uid,$wall) {
5107         $o = '';
5108
5109         if(! feature_enabled($uid,'archives'))
5110                 return $o;
5111
5112         // For former Facebook folks that left because of "timeline"
5113
5114 /*      if($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
5115                 return $o;*/
5116
5117         $visible_years = get_pconfig($uid,'system','archive_visible_years');
5118         if(! $visible_years)
5119                 $visible_years = 5;
5120
5121         $ret = list_post_dates($uid,$wall);
5122
5123         if(! count($ret))
5124                 return $o;
5125
5126         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
5127         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
5128
5129         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
5130                 '$title' => t('Archives'),
5131                 '$size' => $visible_years,
5132                 '$cutoff_year' => $cutoff_year,
5133                 '$cutoff' => $cutoff,
5134                 '$url' => $url,
5135                 '$dates' => $ret,
5136                 '$showmore' => t('show more')
5137
5138         ));
5139         return $o;
5140 }
5141
5142 function store_diaspora_retract_sig($item, $user, $baseurl) {
5143         // Note that we can't add a target_author_signature
5144         // if the comment was deleted by a remote user. That should be ok, because if a remote user is deleting
5145         // the comment, that means we're the home of the post, and Diaspora will only
5146         // check the parent_author_signature of retractions that it doesn't have to relay further
5147         //
5148         // I don't think this function gets called for an "unlike," but I'll check anyway
5149
5150         $enabled = intval(get_config('system','diaspora_enabled'));
5151         if(! $enabled) {
5152                 logger('drop_item: diaspora support disabled, not storing retraction signature', LOGGER_DEBUG);
5153                 return;
5154         }
5155
5156         logger('drop_item: storing diaspora retraction signature');
5157
5158         $signed_text = $item['guid'] . ';' . ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
5159
5160         if(local_user() == $item['uid']) {
5161
5162                 $handle = $user['nickname'] . '@' . substr($baseurl, strpos($baseurl,'://') + 3);
5163                 $authorsig = base64_encode(rsa_sign($signed_text,$user['prvkey'],'sha256'));
5164         }
5165         else {
5166                 $r = q("SELECT `nick`, `url` FROM `contact` WHERE `id` = '%d' LIMIT 1",
5167                         $item['contact-id'] // If this function gets called, drop_item() has already checked remote_user() == $item['contact-id']
5168                 );
5169                 if(count($r)) {
5170                         // The below handle only works for NETWORK_DFRN. I think that's ok, because this function
5171                         // only handles DFRN deletes
5172                         $handle_baseurl_start = strpos($r['url'],'://') + 3;
5173                         $handle_baseurl_length = strpos($r['url'],'/profile') - $handle_baseurl_start;
5174                         $handle = $r['nick'] . '@' . substr($r['url'], $handle_baseurl_start, $handle_baseurl_length);
5175                         $authorsig = '';
5176                 }
5177         }
5178
5179         if(isset($handle))
5180                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
5181                         intval($item['id']),
5182                         dbesc($signed_text),
5183                         dbesc($authorsig),
5184                         dbesc($handle)
5185                 );
5186
5187         return;
5188 }