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",
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                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d",
2407                         dbesc(notags(trim($new_name))),
2408                         dbesc(datetime_convert()),
2409                         intval($contact['uid']),
2410                         intval($contact['id'])
2411                 );
2412
2413                 // do our best to update the name on content items
2414
2415                 if(count($r)) {
2416                         q("update item set `author-name` = '%s' where `author-name` = '%s' and `author-link` = '%s' and uid = %d",
2417                                 dbesc(notags(trim($new_name))),
2418                                 dbesc($r[0]['name']),
2419                                 dbesc($r[0]['url']),
2420                                 intval($contact['uid'])
2421                         );
2422                 }
2423         }
2424
2425         if ($contact_updated AND $new_name AND $photo_url)
2426                 poco_check($contact['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $contact['id'], $contact['uid']);
2427
2428         if(strlen($birthday)) {
2429                 if(substr($birthday,0,4) != $contact['bdyear']) {
2430                         logger('consume_feed: updating birthday: ' . $birthday);
2431
2432                         /**
2433                          *
2434                          * Add new birthday event for this person
2435                          *
2436                          * $bdtext is just a readable placeholder in case the event is shared
2437                          * with others. We will replace it during presentation to our $importer
2438                          * to contain a sparkle link and perhaps a photo.
2439                          *
2440                          */
2441
2442                         $bdtext = sprintf( t('%s\'s birthday'), $contact['name']);
2443                         $bdtext2 = sprintf( t('Happy Birthday %s'), ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ) ;
2444
2445
2446                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`summary`,`desc`,`type`)
2447                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ",
2448                                 intval($contact['uid']),
2449                                 intval($contact['id']),
2450                                 dbesc(datetime_convert()),
2451                                 dbesc(datetime_convert()),
2452                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
2453                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
2454                                 dbesc($bdtext),
2455                                 dbesc($bdtext2),
2456                                 dbesc('birthday')
2457                         );
2458
2459
2460                         // update bdyear
2461
2462                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d",
2463                                 dbesc(substr($birthday,0,4)),
2464                                 intval($contact['uid']),
2465                                 intval($contact['id'])
2466                         );
2467
2468                         // This function is called twice without reloading the contact
2469                         // Make sure we only create one event. This is why &$contact
2470                         // is a reference var in this function
2471
2472                         $contact['bdyear'] = substr($birthday,0,4);
2473                 }
2474         }
2475
2476         $community_page = 0;
2477         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
2478         if($rawtags) {
2479                 $community_page = intval($rawtags[0]['data']);
2480         }
2481         if(is_array($contact) && intval($contact['forum']) != $community_page) {
2482                 q("update contact set forum = %d where id = %d",
2483                         intval($community_page),
2484                         intval($contact['id'])
2485                 );
2486                 $contact['forum'] = (string) $community_page;
2487         }
2488
2489
2490         // process any deleted entries
2491
2492         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
2493         if(is_array($del_entries) && count($del_entries) && $pass != 2) {
2494                 foreach($del_entries as $dentry) {
2495                         $deleted = false;
2496                         if(isset($dentry['attribs']['']['ref'])) {
2497                                 $uri = $dentry['attribs']['']['ref'];
2498                                 $deleted = true;
2499                                 if(isset($dentry['attribs']['']['when'])) {
2500                                         $when = $dentry['attribs']['']['when'];
2501                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
2502                                 }
2503                                 else
2504                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
2505                         }
2506                         if($deleted && is_array($contact)) {
2507                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN `contact` on `item`.`contact-id` = `contact`.`id`
2508                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
2509                                         dbesc($uri),
2510                                         intval($importer['uid']),
2511                                         intval($contact['id'])
2512                                 );
2513                                 if(count($r)) {
2514                                         $item = $r[0];
2515
2516                                         if(! $item['deleted'])
2517                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
2518
2519                                         if($item['object-type'] === ACTIVITY_OBJ_EVENT) {
2520                                                 logger("Deleting event ".$item['event-id'], LOGGER_DEBUG);
2521                                                 event_delete($item['event-id']);
2522                                         }
2523
2524                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2525                                                 $xo = parse_xml_string($item['object'],false);
2526                                                 $xt = parse_xml_string($item['target'],false);
2527                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
2528                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
2529                                                                 dbesc($xt->id),
2530                                                                 intval($importer['importer_uid'])
2531                                                         );
2532                                                         if(count($i)) {
2533
2534                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
2535
2536                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
2537                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
2538                                                                 $author_copy = (($item['origin']) ? true : false);
2539
2540                                                                 if($owner_remove && $author_copy)
2541                                                                         continue;
2542                                                                 if($author_remove || $owner_remove) {
2543                                                                         $tags = explode(',',$i[0]['tag']);
2544                                                                         $newtags = array();
2545                                                                         if(count($tags)) {
2546                                                                                 foreach($tags as $tag)
2547                                                                                         if(trim($tag) !== trim($xo->body))
2548                                                                                                 $newtags[] = trim($tag);
2549                                                                         }
2550                                                                         q("update item set tag = '%s' where id = %d",
2551                                                                                 dbesc(implode(',',$newtags)),
2552                                                                                 intval($i[0]['id'])
2553                                                                         );
2554                                                                         create_tags_from_item($i[0]['id']);
2555                                                                 }
2556                                                         }
2557                                                 }
2558                                         }
2559
2560                                         if($item['uri'] == $item['parent-uri']) {
2561                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2562                                                         `body` = '', `title` = ''
2563                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
2564                                                         dbesc($when),
2565                                                         dbesc(datetime_convert()),
2566                                                         dbesc($item['uri']),
2567                                                         intval($importer['uid'])
2568                                                 );
2569                                                 create_tags_from_itemuri($item['uri'], $importer['uid']);
2570                                                 create_files_from_itemuri($item['uri'], $importer['uid']);
2571                                                 update_thread_uri($item['uri'], $importer['uid']);
2572                                         }
2573                                         else {
2574                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2575                                                         `body` = '', `title` = ''
2576                                                         WHERE `uri` = '%s' AND `uid` = %d",
2577                                                         dbesc($when),
2578                                                         dbesc(datetime_convert()),
2579                                                         dbesc($uri),
2580                                                         intval($importer['uid'])
2581                                                 );
2582                                                 create_tags_from_itemuri($uri, $importer['uid']);
2583                                                 create_files_from_itemuri($uri, $importer['uid']);
2584                                                 if($item['last-child']) {
2585                                                         // ensure that last-child is set in case the comment that had it just got wiped.
2586                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2587                                                                 dbesc(datetime_convert()),
2588                                                                 dbesc($item['parent-uri']),
2589                                                                 intval($item['uid'])
2590                                                         );
2591                                                         // who is the last child now?
2592                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `moderated` = 0 AND `uid` = %d
2593                                                                 ORDER BY `created` DESC LIMIT 1",
2594                                                                         dbesc($item['parent-uri']),
2595                                                                         intval($importer['uid'])
2596                                                         );
2597                                                         if(count($r)) {
2598                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2599                                                                         intval($r[0]['id'])
2600                                                                 );
2601                                                         }
2602                                                 }
2603                                         }
2604                                 }
2605                         }
2606                 }
2607         }
2608
2609         // Now process the feed
2610
2611         if($feed->get_item_quantity()) {
2612
2613                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
2614
2615         // in inverse date order
2616                 if ($datedir)
2617                         $items = array_reverse($feed->get_items());
2618                 else
2619                         $items = $feed->get_items();
2620
2621
2622                 foreach($items as $item) {
2623
2624                         $is_reply = false;
2625                         $item_id = $item->get_id();
2626                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
2627                         if(isset($rawthread[0]['attribs']['']['ref'])) {
2628                                 $is_reply = true;
2629                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
2630                         }
2631
2632                         if(($is_reply) && is_array($contact)) {
2633
2634                                 if($pass == 1)
2635                                         continue;
2636
2637                                 // not allowed to post
2638
2639                                 if($contact['rel'] == CONTACT_IS_FOLLOWER)
2640                                         continue;
2641
2642
2643                                 // Have we seen it? If not, import it.
2644
2645                                 $item_id  = $item->get_id();
2646                                 $datarray = get_atom_elements($feed, $item, $contact);
2647
2648                                 if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2649                                         $datarray['author-name'] = $contact['name'];
2650                                 if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2651                                         $datarray['author-link'] = $contact['url'];
2652                                 if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2653                                         $datarray['author-avatar'] = $contact['thumb'];
2654
2655                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2656                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2657                                         continue;
2658                                 }
2659
2660                                 $force_parent = false;
2661                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2662                                         if($contact['network'] === NETWORK_OSTATUS)
2663                                                 $force_parent = true;
2664                                         if(strlen($datarray['title']))
2665                                                 unset($datarray['title']);
2666                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2667                                                 dbesc(datetime_convert()),
2668                                                 dbesc($parent_uri),
2669                                                 intval($importer['uid'])
2670                                         );
2671                                         $datarray['last-child'] = 1;
2672                                         update_thread_uri($parent_uri, $importer['uid']);
2673                                 }
2674
2675
2676                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2677                                         dbesc($item_id),
2678                                         intval($importer['uid'])
2679                                 );
2680
2681                                 // Update content if 'updated' changes
2682
2683                                 if(count($r)) {
2684                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2685
2686                                                 // do not accept (ignore) an earlier edit than one we currently have.
2687                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2688                                                         continue;
2689
2690                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2691                                                         dbesc($datarray['title']),
2692                                                         dbesc($datarray['body']),
2693                                                         dbesc($datarray['tag']),
2694                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2695                                                         dbesc(datetime_convert()),
2696                                                         dbesc($item_id),
2697                                                         intval($importer['uid'])
2698                                                 );
2699                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2700                                                 update_thread_uri($item_id, $importer['uid']);
2701                                         }
2702
2703                                         // update last-child if it changes
2704
2705                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2706                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
2707                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2708                                                         dbesc(datetime_convert()),
2709                                                         dbesc($parent_uri),
2710                                                         intval($importer['uid'])
2711                                                 );
2712                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
2713                                                         intval($allow[0]['data']),
2714                                                         dbesc(datetime_convert()),
2715                                                         dbesc($item_id),
2716                                                         intval($importer['uid'])
2717                                                 );
2718                                                 update_thread_uri($item_id, $importer['uid']);
2719                                         }
2720                                         continue;
2721                                 }
2722
2723
2724                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2725                                         // one way feed - no remote comment ability
2726                                         $datarray['last-child'] = 0;
2727                                 }
2728                                 $datarray['parent-uri'] = $parent_uri;
2729                                 $datarray['uid'] = $importer['uid'];
2730                                 $datarray['contact-id'] = $contact['id'];
2731                                 if(($datarray['verb'] === ACTIVITY_LIKE)
2732                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
2733                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
2734                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
2735                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
2736                                         $datarray['type'] = 'activity';
2737                                         $datarray['gravity'] = GRAVITY_LIKE;
2738                                         // only one like or dislike per person
2739                                         // splitted into two queries for performance issues
2740                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
2741                                                 intval($datarray['uid']),
2742                                                 intval($datarray['contact-id']),
2743                                                 dbesc($datarray['verb']),
2744                                                 dbesc($parent_uri)
2745                                         );
2746                                         if($r && count($r))
2747                                                 continue;
2748
2749                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
2750                                                 intval($datarray['uid']),
2751                                                 intval($datarray['contact-id']),
2752                                                 dbesc($datarray['verb']),
2753                                                 dbesc($parent_uri)
2754                                         );
2755                                         if($r && count($r))
2756                                                 continue;
2757                                 }
2758
2759                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2760                                         $xo = parse_xml_string($datarray['object'],false);
2761                                         $xt = parse_xml_string($datarray['target'],false);
2762
2763                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
2764                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
2765                                                         dbesc($xt->id),
2766                                                         intval($importer['importer_uid'])
2767                                                 );
2768                                                 if(! count($r))
2769                                                         continue;
2770
2771                                                 // extract tag, if not duplicate, add to parent item
2772                                                 if($xo->id && $xo->content) {
2773                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
2774                                                         if(! (stristr($r[0]['tag'],$newtag))) {
2775                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
2776                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . $newtag),
2777                                                                         intval($r[0]['id'])
2778                                                                 );
2779                                                                 create_tags_from_item($r[0]['id']);
2780                                                         }
2781                                                 }
2782                                         }
2783                                 }
2784
2785                                 $r = item_store($datarray,$force_parent);
2786                                 continue;
2787                         }
2788
2789                         else {
2790
2791                                 // Head post of a conversation. Have we seen it? If not, import it.
2792
2793                                 $item_id  = $item->get_id();
2794
2795                                 $datarray = get_atom_elements($feed, $item, $contact);
2796
2797                                 if(is_array($contact)) {
2798                                         if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2799                                                 $datarray['author-name'] = $contact['name'];
2800                                         if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2801                                                 $datarray['author-link'] = $contact['url'];
2802                                         if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2803                                                 $datarray['author-avatar'] = $contact['thumb'];
2804                                 }
2805
2806                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2807                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2808                                         continue;
2809                                 }
2810
2811                                 // special handling for events
2812
2813                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
2814                                         $ev = bbtoevent($datarray['body']);
2815                                         if((x($ev,'desc') || x($ev,'summary')) && x($ev,'start')) {
2816                                                 $ev['uid'] = $importer['uid'];
2817                                                 $ev['uri'] = $item_id;
2818                                                 $ev['edited'] = $datarray['edited'];
2819                                                 $ev['private'] = $datarray['private'];
2820                                                 $ev['guid'] = $datarray['guid'];
2821
2822                                                 if(is_array($contact))
2823                                                         $ev['cid'] = $contact['id'];
2824                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2825                                                         dbesc($item_id),
2826                                                         intval($importer['uid'])
2827                                                 );
2828                                                 if(count($r))
2829                                                         $ev['id'] = $r[0]['id'];
2830                                                 $xyz = event_store($ev);
2831                                                 continue;
2832                                         }
2833                                 }
2834
2835                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2836                                         if(strlen($datarray['title']))
2837                                                 unset($datarray['title']);
2838                                         $datarray['last-child'] = 1;
2839                                 }
2840
2841
2842                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2843                                         dbesc($item_id),
2844                                         intval($importer['uid'])
2845                                 );
2846
2847                                 // Update content if 'updated' changes
2848
2849                                 if(count($r)) {
2850                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2851
2852                                                 // do not accept (ignore) an earlier edit than one we currently have.
2853                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2854                                                         continue;
2855
2856                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2857                                                         dbesc($datarray['title']),
2858                                                         dbesc($datarray['body']),
2859                                                         dbesc($datarray['tag']),
2860                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2861                                                         dbesc(datetime_convert()),
2862                                                         dbesc($item_id),
2863                                                         intval($importer['uid'])
2864                                                 );
2865                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2866                                                 update_thread_uri($item_id, $importer['uid']);
2867                                         }
2868
2869                                         // update last-child if it changes
2870
2871                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2872                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
2873                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2874                                                         intval($allow[0]['data']),
2875                                                         dbesc(datetime_convert()),
2876                                                         dbesc($item_id),
2877                                                         intval($importer['uid'])
2878                                                 );
2879                                                 update_thread_uri($item_id, $importer['uid']);
2880                                         }
2881                                         continue;
2882                                 }
2883
2884                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
2885                                         logger('consume-feed: New follower');
2886                                         new_follower($importer,$contact,$datarray,$item);
2887                                         return;
2888                                 }
2889                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
2890                                         lose_follower($importer,$contact,$datarray,$item);
2891                                         return;
2892                                 }
2893
2894                                 if(activity_match($datarray['verb'],ACTIVITY_REQ_FRIEND)) {
2895                                         logger('consume-feed: New friend request');
2896                                         new_follower($importer,$contact,$datarray,$item,true);
2897                                         return;
2898                                 }
2899                                 if(activity_match($datarray['verb'],ACTIVITY_UNFRIEND))  {
2900                                         lose_sharer($importer,$contact,$datarray,$item);
2901                                         return;
2902                                 }
2903
2904
2905                                 if(! is_array($contact))
2906                                         return;
2907
2908
2909                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2910                                                 // one way feed - no remote comment ability
2911                                                 $datarray['last-child'] = 0;
2912                                 }
2913                                 if($contact['network'] === NETWORK_FEED)
2914                                         $datarray['private'] = 2;
2915
2916                                 $datarray['parent-uri'] = $item_id;
2917                                 $datarray['uid'] = $importer['uid'];
2918                                 $datarray['contact-id'] = $contact['id'];
2919
2920                                 if(! link_compare($datarray['owner-link'],$contact['url'])) {
2921                                         // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
2922                                         // but otherwise there's a possible data mixup on the sender's system.
2923                                         // the tgroup delivery code called from item_store will correct it if it's a forum,
2924                                         // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
2925                                         logger('consume_feed: Correcting item owner.', LOGGER_DEBUG);
2926                                         $datarray['owner-name']   = $contact['name'];
2927                                         $datarray['owner-link']   = $contact['url'];
2928                                         $datarray['owner-avatar'] = $contact['thumb'];
2929                                 }
2930
2931                                 // We've allowed "followers" to reach this point so we can decide if they are
2932                                 // posting an @-tag delivery, which followers are allowed to do for certain
2933                                 // page types. Now that we've parsed the post, let's check if it is legit. Otherwise ignore it.
2934
2935                                 if(($contact['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['uid'],$datarray)))
2936                                         continue;
2937
2938                                 // This is my contact on another system, but it's really me.
2939                                 // Turn this into a wall post.
2940                                 $notify = item_is_remote_self($contact, $datarray);
2941
2942                                 $r = item_store($datarray, false, $notify);
2943                                 logger('Stored - Contact '.$contact['url'].' Notify '.$notify.' return '.$r.' Item '.print_r($datarray, true), LOGGER_DEBUG);
2944                                 continue;
2945
2946                         }
2947                 }
2948         }
2949 }
2950
2951 function item_is_remote_self($contact, &$datarray) {
2952         $a = get_app();
2953
2954         if (!$contact['remote_self'])
2955                 return false;
2956
2957         // Prevent the forwarding of posts that are forwarded
2958         if ($datarray["extid"] == NETWORK_DFRN)
2959                 return false;
2960
2961         // Prevent to forward already forwarded posts
2962         if ($datarray["app"] == $a->get_hostname())
2963                 return false;
2964
2965         // Only forward posts
2966         if ($datarray["verb"] != ACTIVITY_POST)
2967                 return false;
2968
2969         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
2970                 return false;
2971
2972         $datarray2 = $datarray;
2973         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
2974         if ($contact['remote_self'] == 2) {
2975                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
2976                         intval($contact['uid']));
2977                 if (count($r)) {
2978                         $datarray['contact-id'] = $r[0]["id"];
2979
2980                         $datarray['owner-name'] = $r[0]["name"];
2981                         $datarray['owner-link'] = $r[0]["url"];
2982                         $datarray['owner-avatar'] = $r[0]["thumb"];
2983
2984                         $datarray['author-name']   = $datarray['owner-name'];
2985                         $datarray['author-link']   = $datarray['owner-link'];
2986                         $datarray['author-avatar'] = $datarray['owner-avatar'];
2987                 }
2988
2989                 if ($contact['network'] != NETWORK_FEED) {
2990                         $datarray["guid"] = get_guid(32);
2991                         unset($datarray["plink"]);
2992                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
2993                         $datarray["parent-uri"] = $datarray["uri"];
2994                         $datarray["extid"] = $contact['network'];
2995                         $urlpart = parse_url($datarray2['author-link']);
2996                         $datarray["app"] = $urlpart["host"];
2997                 } else
2998                         $datarray['private'] = 0;
2999         }
3000
3001         if ($contact['network'] != NETWORK_FEED) {
3002                 // Store the original post
3003                 $r = item_store($datarray2, false, false);
3004                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
3005         } else
3006                 $datarray["app"] = "Feed";
3007
3008         return true;
3009 }
3010
3011 function local_delivery($importer,$data) {
3012         $a = get_app();
3013
3014         logger(__function__, LOGGER_TRACE);
3015
3016         if($importer['readonly']) {
3017                 // We aren't receiving stuff from this person. But we will quietly ignore them
3018                 // rather than a blatant "go away" message.
3019                 logger('local_delivery: ignoring');
3020                 return 0;
3021                 //NOTREACHED
3022         }
3023
3024         // Consume notification feed. This may differ from consuming a public feed in several ways
3025         // - might contain email or friend suggestions
3026         // - might contain remote followup to our message
3027         //              - in which case we need to accept it and then notify other conversants
3028         // - we may need to send various email notifications
3029
3030         $feed = new SimplePie();
3031         $feed->set_raw_data($data);
3032         $feed->enable_order_by_date(false);
3033         $feed->init();
3034
3035
3036         if($feed->error())
3037                 logger('local_delivery: Error parsing XML: ' . $feed->error());
3038
3039
3040         // Check at the feed level for updated contact name and/or photo
3041
3042         $name_updated  = '';
3043         $new_name = '';
3044         $photo_timestamp = '';
3045         $photo_url = '';
3046         $contact_updated = '';
3047
3048
3049         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
3050
3051 // Fallback should not be needed here. If it isn't DFRN it won't have DFRN updated tags
3052 //      if(! $rawtags)
3053 //              $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
3054
3055         if($rawtags) {
3056                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
3057                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
3058                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
3059                         $new_name = $elems['name'][0]['data'];
3060
3061                         // Manually checking for changed contact names
3062                         if (($new_name != $importer['name']) AND ($new_name != "") AND ($name_updated <= $importer['name-date'])) {
3063                                 $name_updated = date("c");
3064                                 $photo_timestamp = date("c");
3065                         }
3066                 }
3067                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
3068                         if ($photo_timestamp == "")
3069                                 $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
3070                         $photo_url = $elems['link'][0]['attribs']['']['href'];
3071                 }
3072         }
3073
3074         if(($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $importer['avatar-date'])) {
3075
3076                 $contact_updated = $photo_timestamp;
3077
3078                 logger('local_delivery: Updating photo for ' . $importer['name']);
3079                 require_once("include/Photo.php");
3080
3081                 $photos = import_profile_photo($photo_url,$importer['importer_uid'],$importer['id']);
3082
3083                 q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
3084                         WHERE `uid` = %d AND `id` = %d",
3085                         dbesc(datetime_convert()),
3086                         dbesc($photos[0]),
3087                         dbesc($photos[1]),
3088                         dbesc($photos[2]),
3089                         intval($importer['importer_uid']),
3090                         intval($importer['id'])
3091                 );
3092         }
3093
3094         if(($name_updated) && (strlen($new_name)) && ($name_updated > $importer['name-date'])) {
3095                 if ($name_updated > $contact_updated)
3096                         $contact_updated = $name_updated;
3097
3098                 $r = q("select * from contact where uid = %d and id = %d limit 1",
3099                         intval($importer['importer_uid']),
3100                         intval($importer['id'])
3101                 );
3102
3103                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d",
3104                         dbesc(notags(trim($new_name))),
3105                         dbesc(datetime_convert()),
3106                         intval($importer['importer_uid']),
3107                         intval($importer['id'])
3108                 );
3109
3110                 // do our best to update the name on content items
3111
3112                 if(count($r)) {
3113                         q("update item set `author-name` = '%s' where `author-name` = '%s' and `author-link` = '%s' and uid = %d",
3114                                 dbesc(notags(trim($new_name))),
3115                                 dbesc($r[0]['name']),
3116                                 dbesc($r[0]['url']),
3117                                 intval($importer['importer_uid'])
3118                         );
3119                 }
3120         }
3121
3122         if ($contact_updated AND $new_name AND $photo_url)
3123                 poco_check($importer['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $importer['id'], $importer['importer_uid']);
3124
3125         // Currently unsupported - needs a lot of work
3126         $reloc = $feed->get_feed_tags( NAMESPACE_DFRN, 'relocate' );
3127         if(isset($reloc[0]['child'][NAMESPACE_DFRN])) {
3128                 $base = $reloc[0]['child'][NAMESPACE_DFRN];
3129                 $newloc = array();
3130                 $newloc['uid'] = $importer['importer_uid'];
3131                 $newloc['cid'] = $importer['id'];
3132                 $newloc['name'] = notags(unxmlify($base['name'][0]['data']));
3133                 $newloc['photo'] = notags(unxmlify($base['photo'][0]['data']));
3134                 $newloc['thumb'] = notags(unxmlify($base['thumb'][0]['data']));
3135                 $newloc['micro'] = notags(unxmlify($base['micro'][0]['data']));
3136                 $newloc['url'] = notags(unxmlify($base['url'][0]['data']));
3137                 $newloc['request'] = notags(unxmlify($base['request'][0]['data']));
3138                 $newloc['confirm'] = notags(unxmlify($base['confirm'][0]['data']));
3139                 $newloc['notify'] = notags(unxmlify($base['notify'][0]['data']));
3140                 $newloc['poll'] = notags(unxmlify($base['poll'][0]['data']));
3141                 $newloc['sitepubkey'] = notags(unxmlify($base['sitepubkey'][0]['data']));
3142                 /** relocated user must have original key pair */
3143                 /*$newloc['pubkey'] = notags(unxmlify($base['pubkey'][0]['data']));
3144                 $newloc['prvkey'] = notags(unxmlify($base['prvkey'][0]['data']));*/
3145
3146                 logger("items:relocate contact ".print_r($newloc, true).print_r($importer, true), LOGGER_DEBUG);
3147
3148                 // update contact
3149                 $r = q("SELECT photo, url FROM contact WHERE id=%d AND uid=%d;",
3150                         intval($importer['id']),
3151                         intval($importer['importer_uid']));
3152                 if ($r === false)
3153                         return 1;
3154                 $old = $r[0];
3155
3156                 $x = q("UPDATE contact SET
3157                                         name = '%s',
3158                                         photo = '%s',
3159                                         thumb = '%s',
3160                                         micro = '%s',
3161                                         url = '%s',
3162                                         nurl = '%s',
3163                                         request = '%s',
3164                                         confirm = '%s',
3165                                         notify = '%s',
3166                                         poll = '%s',
3167                                         `site-pubkey` = '%s'
3168                         WHERE id=%d AND uid=%d;",
3169                                         dbesc($newloc['name']),
3170                                         dbesc($newloc['photo']),
3171                                         dbesc($newloc['thumb']),
3172                                         dbesc($newloc['micro']),
3173                                         dbesc($newloc['url']),
3174                                         dbesc(normalise_link($newloc['url'])),
3175                                         dbesc($newloc['request']),
3176                                         dbesc($newloc['confirm']),
3177                                         dbesc($newloc['notify']),
3178                                         dbesc($newloc['poll']),
3179                                         dbesc($newloc['sitepubkey']),
3180                                         intval($importer['id']),
3181                                         intval($importer['importer_uid']));
3182
3183                 if ($x === false)
3184                         return 1;
3185                 // update items
3186                 $fields = array(
3187                         'owner-link' => array($old['url'], $newloc['url']),
3188                         'author-link' => array($old['url'], $newloc['url']),
3189                         'owner-avatar' => array($old['photo'], $newloc['photo']),
3190                         'author-avatar' => array($old['photo'], $newloc['photo']),
3191                         );
3192                 foreach ($fields as $n=>$f){
3193                         $x = q("UPDATE `item` SET `%s`='%s' WHERE `%s`='%s' AND uid=%d",
3194                                         $n, dbesc($f[1]),
3195                                         $n, dbesc($f[0]),
3196                                         intval($importer['importer_uid']));
3197                                 if ($x === false)
3198                                         return 1;
3199                         }
3200
3201                 // TODO
3202                 // merge with current record, current contents have priority
3203                 // update record, set url-updated
3204                 // update profile photos
3205                 // schedule a scan?
3206                 return 0;
3207         }
3208
3209
3210         // handle friend suggestion notification
3211
3212         $sugg = $feed->get_feed_tags( NAMESPACE_DFRN, 'suggest' );
3213         if(isset($sugg[0]['child'][NAMESPACE_DFRN])) {
3214                 $base = $sugg[0]['child'][NAMESPACE_DFRN];
3215                 $fsugg = array();
3216                 $fsugg['uid'] = $importer['importer_uid'];
3217                 $fsugg['cid'] = $importer['id'];
3218                 $fsugg['name'] = notags(unxmlify($base['name'][0]['data']));
3219                 $fsugg['photo'] = notags(unxmlify($base['photo'][0]['data']));
3220                 $fsugg['url'] = notags(unxmlify($base['url'][0]['data']));
3221                 $fsugg['request'] = notags(unxmlify($base['request'][0]['data']));
3222                 $fsugg['body'] = escape_tags(unxmlify($base['note'][0]['data']));
3223
3224                 // Does our member already have a friend matching this description?
3225
3226                 $r = q("SELECT * FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
3227                         dbesc($fsugg['name']),
3228                         dbesc(normalise_link($fsugg['url'])),
3229                         intval($fsugg['uid'])
3230                 );
3231                 if(count($r))
3232                         return 0;
3233
3234                 // Do we already have an fcontact record for this person?
3235
3236                 $fid = 0;
3237                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3238                         dbesc($fsugg['url']),
3239                         dbesc($fsugg['name']),
3240                         dbesc($fsugg['request'])
3241                 );
3242                 if(count($r)) {
3243                         $fid = $r[0]['id'];
3244
3245                         // OK, we do. Do we already have an introduction for this person ?
3246                         $r = q("select id from intro where uid = %d and fid = %d limit 1",
3247                                 intval($fsugg['uid']),
3248                                 intval($fid)
3249                         );
3250                         if(count($r))
3251                                 return 0;
3252                 }
3253                 if(! $fid)
3254                         $r = q("INSERT INTO `fcontact` ( `name`,`url`,`photo`,`request` ) VALUES ( '%s', '%s', '%s', '%s' ) ",
3255                         dbesc($fsugg['name']),
3256                         dbesc($fsugg['url']),
3257                         dbesc($fsugg['photo']),
3258                         dbesc($fsugg['request'])
3259                 );
3260                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3261                         dbesc($fsugg['url']),
3262                         dbesc($fsugg['name']),
3263                         dbesc($fsugg['request'])
3264                 );
3265                 if(count($r)) {
3266                         $fid = $r[0]['id'];
3267                 }
3268                 // database record did not get created. Quietly give up.
3269                 else
3270                         return 0;
3271
3272
3273                 $hash = random_string();
3274
3275                 $r = q("INSERT INTO `intro` ( `uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked` )
3276                         VALUES( %d, %d, %d, '%s', '%s', '%s', %d )",
3277                         intval($fsugg['uid']),
3278                         intval($fid),
3279                         intval($fsugg['cid']),
3280                         dbesc($fsugg['body']),
3281                         dbesc($hash),
3282                         dbesc(datetime_convert()),
3283                         intval(0)
3284                 );
3285
3286                 notification(array(
3287                         'type'         => NOTIFY_SUGGEST,
3288                         'notify_flags' => $importer['notify-flags'],
3289                         'language'     => $importer['language'],
3290                         'to_name'      => $importer['username'],
3291                         'to_email'     => $importer['email'],
3292                         'uid'          => $importer['importer_uid'],
3293                         'item'         => $fsugg,
3294                         'link'         => $a->get_baseurl() . '/notifications/intros',
3295                         'source_name'  => $importer['name'],
3296                         'source_link'  => $importer['url'],
3297                         'source_photo' => $importer['photo'],
3298                         'verb'         => ACTIVITY_REQ_FRIEND,
3299                         'otype'        => 'intro'
3300                 ));
3301
3302                 return 0;
3303         }
3304
3305         $ismail = false;
3306
3307         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
3308         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
3309
3310                 logger('local_delivery: private message received');
3311
3312                 $ismail = true;
3313                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
3314
3315                 $msg = array();
3316                 $msg['uid'] = $importer['importer_uid'];
3317                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
3318                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
3319                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
3320                 $msg['contact-id'] = $importer['id'];
3321                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
3322                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
3323                 $msg['seen'] = 0;
3324                 $msg['replied'] = 0;
3325                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
3326                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
3327                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
3328
3329                 dbesc_array($msg);
3330
3331                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
3332                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
3333
3334                 // send notifications.
3335
3336                 require_once('include/enotify.php');
3337
3338                 $notif_params = array(
3339                         'type' => NOTIFY_MAIL,
3340                         'notify_flags' => $importer['notify-flags'],
3341                         'language' => $importer['language'],
3342                         'to_name' => $importer['username'],
3343                         'to_email' => $importer['email'],
3344                         'uid' => $importer['importer_uid'],
3345                         'item' => $msg,
3346                         'source_name' => $msg['from-name'],
3347                         'source_link' => $importer['url'],
3348                         'source_photo' => $importer['thumb'],
3349                         'verb' => ACTIVITY_POST,
3350                         'otype' => 'mail'
3351                 );
3352
3353                 notification($notif_params);
3354                 return 0;
3355
3356                 // NOTREACHED
3357         }
3358
3359         $community_page = 0;
3360         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
3361         if($rawtags) {
3362                 $community_page = intval($rawtags[0]['data']);
3363         }
3364         if(intval($importer['forum']) != $community_page) {
3365                 q("update contact set forum = %d where id = %d",
3366                         intval($community_page),
3367                         intval($importer['id'])
3368                 );
3369                 $importer['forum'] = (string) $community_page;
3370         }
3371
3372         logger('local_delivery: feed item count = ' . $feed->get_item_quantity());
3373
3374         // process any deleted entries
3375
3376         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
3377         if(is_array($del_entries) && count($del_entries)) {
3378                 foreach($del_entries as $dentry) {
3379                         $deleted = false;
3380                         if(isset($dentry['attribs']['']['ref'])) {
3381                                 $uri = $dentry['attribs']['']['ref'];
3382                                 $deleted = true;
3383                                 if(isset($dentry['attribs']['']['when'])) {
3384                                         $when = $dentry['attribs']['']['when'];
3385                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
3386                                 }
3387                                 else
3388                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
3389                         }
3390                         if($deleted) {
3391
3392                                 // check for relayed deletes to our conversation
3393
3394                                 $is_reply = false;
3395                                 $r = q("select * from item where uri = '%s' and uid = %d limit 1",
3396                                         dbesc($uri),
3397                                         intval($importer['importer_uid'])
3398                                 );
3399                                 if(count($r)) {
3400                                         $parent_uri = $r[0]['parent-uri'];
3401                                         if($r[0]['id'] != $r[0]['parent'])
3402                                                 $is_reply = true;
3403                                 }
3404
3405                                 if($is_reply) {
3406                                         $community = false;
3407
3408                                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3409                                                 $sql_extra = '';
3410                                                 $community = true;
3411                                                 logger('local_delivery: possible community delete');
3412                                         }
3413                                         else
3414                                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3415
3416                                         // was the top-level post for this reply written by somebody on this site?
3417                                         // Specifically, the recipient?
3418
3419                                         $is_a_remote_delete = false;
3420
3421                                         // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3422                                         $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3423                                                 `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3424                                                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3425                                                 WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3426                                                 AND `item`.`uid` = %d
3427                                                 $sql_extra
3428                                                 LIMIT 1",
3429                                                 dbesc($parent_uri),
3430                                                 dbesc($parent_uri),
3431                                                 dbesc($parent_uri),
3432                                                 intval($importer['importer_uid'])
3433                                         );
3434                                         if($r && count($r))
3435                                                 $is_a_remote_delete = true;
3436
3437                                         // Does this have the characteristics of a community or private group comment?
3438                                         // If it's a reply to a wall post on a community/prvgroup page it's a
3439                                         // valid community comment. Also forum_mode makes it valid for sure.
3440                                         // If neither, it's not.
3441
3442                                         if($is_a_remote_delete && $community) {
3443                                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3444                                                         $is_a_remote_delete = false;
3445                                                         logger('local_delivery: not a community delete');
3446                                                 }
3447                                         }
3448
3449                                         if($is_a_remote_delete) {
3450                                                 logger('local_delivery: received remote delete');
3451                                         }
3452                                 }
3453
3454                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN contact on `item`.`contact-id` = `contact`.`id`
3455                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
3456                                         dbesc($uri),
3457                                         intval($importer['importer_uid']),
3458                                         intval($importer['id'])
3459                                 );
3460
3461                                 if(count($r)) {
3462                                         $item = $r[0];
3463
3464                                         if($item['deleted'])
3465                                                 continue;
3466
3467                                         logger('local_delivery: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
3468
3469                                         if($item['object-type'] === ACTIVITY_OBJ_EVENT) {
3470                                                 logger("Deleting event ".$item['event-id'], LOGGER_DEBUG);
3471                                                 event_delete($item['event-id']);
3472                                         }
3473
3474                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3475                                                 $xo = parse_xml_string($item['object'],false);
3476                                                 $xt = parse_xml_string($item['target'],false);
3477
3478                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
3479                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
3480                                                                 dbesc($xt->id),
3481                                                                 intval($importer['importer_uid'])
3482                                                         );
3483                                                         if(count($i)) {
3484
3485                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
3486
3487                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
3488                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
3489                                                                 $author_copy = (($item['origin']) ? true : false);
3490
3491                                                                 if($owner_remove && $author_copy)
3492                                                                         continue;
3493                                                                 if($author_remove || $owner_remove) {
3494                                                                         $tags = explode(',',$i[0]['tag']);
3495                                                                         $newtags = array();
3496                                                                         if(count($tags)) {
3497                                                                                 foreach($tags as $tag)
3498                                                                                         if(trim($tag) !== trim($xo->body))
3499                                                                                                 $newtags[] = trim($tag);
3500                                                                         }
3501                                                                         q("update item set tag = '%s' where id = %d",
3502                                                                                 dbesc(implode(',',$newtags)),
3503                                                                                 intval($i[0]['id'])
3504                                                                         );
3505                                                                         create_tags_from_item($i[0]['id']);
3506                                                                 }
3507                                                         }
3508                                                 }
3509                                         }
3510
3511                                         if($item['uri'] == $item['parent-uri']) {
3512                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3513                                                         `body` = '', `title` = ''
3514                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
3515                                                         dbesc($when),
3516                                                         dbesc(datetime_convert()),
3517                                                         dbesc($item['uri']),
3518                                                         intval($importer['importer_uid'])
3519                                                 );
3520                                                 create_tags_from_itemuri($item['uri'], $importer['importer_uid']);
3521                                                 create_files_from_itemuri($item['uri'], $importer['importer_uid']);
3522                                                 update_thread_uri($item['uri'], $importer['importer_uid']);
3523                                         }
3524                                         else {
3525                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3526                                                         `body` = '', `title` = ''
3527                                                         WHERE `uri` = '%s' AND `uid` = %d",
3528                                                         dbesc($when),
3529                                                         dbesc(datetime_convert()),
3530                                                         dbesc($uri),
3531                                                         intval($importer['importer_uid'])
3532                                                 );
3533                                                 create_tags_from_itemuri($uri, $importer['importer_uid']);
3534                                                 create_files_from_itemuri($uri, $importer['importer_uid']);
3535                                                 update_thread_uri($uri, $importer['importer_uid']);
3536                                                 if($item['last-child']) {
3537                                                         // ensure that last-child is set in case the comment that had it just got wiped.
3538                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
3539                                                                 dbesc(datetime_convert()),
3540                                                                 dbesc($item['parent-uri']),
3541                                                                 intval($item['uid'])
3542                                                         );
3543                                                         // who is the last child now?
3544                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
3545                                                                 ORDER BY `created` DESC LIMIT 1",
3546                                                                         dbesc($item['parent-uri']),
3547                                                                         intval($importer['importer_uid'])
3548                                                         );
3549                                                         if(count($r)) {
3550                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
3551                                                                         intval($r[0]['id'])
3552                                                                 );
3553                                                         }
3554                                                 }
3555                                                 // if this is a relayed delete, propagate it to other recipients
3556
3557                                                 if($is_a_remote_delete)
3558                                                         proc_run('php',"include/notifier.php","drop",$item['id']);
3559                                         }
3560                                 }
3561                         }
3562                 }
3563         }
3564
3565
3566         foreach($feed->get_items() as $item) {
3567
3568                 $is_reply = false;
3569                 $item_id = $item->get_id();
3570                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
3571                 if(isset($rawthread[0]['attribs']['']['ref'])) {
3572                         $is_reply = true;
3573                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
3574                 }
3575
3576                 if($is_reply) {
3577                         $community = false;
3578
3579                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3580                                 $sql_extra = '';
3581                                 $community = true;
3582                                 logger('local_delivery: possible community reply');
3583                         }
3584                         else
3585                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3586
3587                         // was the top-level post for this reply written by somebody on this site?
3588                         // Specifically, the recipient?
3589
3590                         $is_a_remote_comment = false;
3591                         $top_uri = $parent_uri;
3592
3593                         $r = q("select `item`.`parent-uri` from `item`
3594                                 WHERE `item`.`uri` = '%s'
3595                                 LIMIT 1",
3596                                 dbesc($parent_uri)
3597                         );
3598                         if($r && count($r)) {
3599                                 $top_uri = $r[0]['parent-uri'];
3600
3601                                 // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3602                                 $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3603                                         `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3604                                         INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3605                                         WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3606                                         AND `item`.`uid` = %d
3607                                         $sql_extra
3608                                         LIMIT 1",
3609                                         dbesc($top_uri),
3610                                         dbesc($top_uri),
3611                                         dbesc($top_uri),
3612                                         intval($importer['importer_uid'])
3613                                 );
3614                                 if($r && count($r))
3615                                         $is_a_remote_comment = true;
3616                         }
3617
3618                         // Does this have the characteristics of a community or private group comment?
3619                         // If it's a reply to a wall post on a community/prvgroup page it's a
3620                         // valid community comment. Also forum_mode makes it valid for sure.
3621                         // If neither, it's not.
3622
3623                         if($is_a_remote_comment && $community) {
3624                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3625                                         $is_a_remote_comment = false;
3626                                         logger('local_delivery: not a community reply');
3627                                 }
3628                         }
3629
3630                         if($is_a_remote_comment) {
3631                                 logger('local_delivery: received remote comment');
3632                                 $is_like = false;
3633                                 // remote reply to our post. Import and then notify everybody else.
3634
3635                                 $datarray = get_atom_elements($feed, $item);
3636
3637                                 $r = q("SELECT `id`, `uid`, `last-child`, `edited`, `body`  FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3638                                         dbesc($item_id),
3639                                         intval($importer['importer_uid'])
3640                                 );
3641
3642                                 // Update content if 'updated' changes
3643
3644                                 if(count($r)) {
3645                                         $iid = $r[0]['id'];
3646                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3647
3648                                                 // do not accept (ignore) an earlier edit than one we currently have.
3649                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3650                                                         continue;
3651
3652                                                 logger('received updated comment' , LOGGER_DEBUG);
3653                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3654                                                         dbesc($datarray['title']),
3655                                                         dbesc($datarray['body']),
3656                                                         dbesc($datarray['tag']),
3657                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3658                                                         dbesc(datetime_convert()),
3659                                                         dbesc($item_id),
3660                                                         intval($importer['importer_uid'])
3661                                                 );
3662                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3663
3664                                                 proc_run('php',"include/notifier.php","comment-import",$iid);
3665
3666                                         }
3667
3668                                         continue;
3669                                 }
3670
3671
3672
3673                                 $own = q("select name,url,thumb from contact where uid = %d and self = 1 limit 1",
3674                                         intval($importer['importer_uid'])
3675                                 );
3676
3677
3678                                 $datarray['type'] = 'remote-comment';
3679                                 $datarray['wall'] = 1;
3680                                 $datarray['parent-uri'] = $parent_uri;
3681                                 $datarray['uid'] = $importer['importer_uid'];
3682                                 $datarray['owner-name'] = $own[0]['name'];
3683                                 $datarray['owner-link'] = $own[0]['url'];
3684                                 $datarray['owner-avatar'] = $own[0]['thumb'];
3685                                 $datarray['contact-id'] = $importer['id'];
3686
3687                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3688                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3689                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3690                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3691                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3692                                         $is_like = true;
3693                                         $datarray['type'] = 'activity';
3694                                         $datarray['gravity'] = GRAVITY_LIKE;
3695                                         $datarray['last-child'] = 0;
3696                                         // only one like or dislike per person
3697                                         // splitted into two queries for performance issues
3698                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`parent-uri` = '%s') and deleted = 0 limit 1",
3699                                                 intval($datarray['uid']),
3700                                                 intval($datarray['contact-id']),
3701                                                 dbesc($datarray['verb']),
3702                                                 dbesc($datarray['parent-uri'])
3703
3704                                         );
3705                                         if($r && count($r))
3706                                                 continue;
3707
3708                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`thr-parent` = '%s') and deleted = 0 limit 1",
3709                                                 intval($datarray['uid']),
3710                                                 intval($datarray['contact-id']),
3711                                                 dbesc($datarray['verb']),
3712                                                 dbesc($datarray['parent-uri'])
3713
3714                                         );
3715                                         if($r && count($r))
3716                                                 continue;
3717                                 }
3718
3719                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3720
3721                                         $xo = parse_xml_string($datarray['object'],false);
3722                                         $xt = parse_xml_string($datarray['target'],false);
3723
3724                                         if(($xt->type == ACTIVITY_OBJ_NOTE) && ($xt->id)) {
3725
3726                                                 // fetch the parent item
3727
3728                                                 $tagp = q("select * from item where uri = '%s' and uid = %d limit 1",
3729                                                         dbesc($xt->id),
3730                                                         intval($importer['importer_uid'])
3731                                                 );
3732                                                 if(! count($tagp))
3733                                                         continue;
3734
3735                                                 // extract tag, if not duplicate, and this user allows tags, add to parent item
3736
3737                                                 if($xo->id && $xo->content) {
3738                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
3739                                                         if(! (stristr($tagp[0]['tag'],$newtag))) {
3740                                                                 $i = q("SELECT `blocktags` FROM `user` where `uid` = %d LIMIT 1",
3741                                                                         intval($importer['importer_uid'])
3742                                                                 );
3743                                                                 if(count($i) && ! intval($i[0]['blocktags'])) {
3744                                                                         q("UPDATE item SET tag = '%s', `edited` = '%s', `changed` = '%s' WHERE id = %d",
3745                                                                                 dbesc($tagp[0]['tag'] . (strlen($tagp[0]['tag']) ? ',' : '') . $newtag),
3746                                                                                 intval($tagp[0]['id']),
3747                                                                                 dbesc(datetime_convert()),
3748                                                                                 dbesc(datetime_convert())
3749                                                                         );
3750                                                                         create_tags_from_item($tagp[0]['id']);
3751                                                                 }
3752                                                         }
3753                                                 }
3754                                         }
3755                                 }
3756
3757
3758                                 $posted_id = item_store($datarray);
3759                                 $parent = 0;
3760
3761                                 if($posted_id) {
3762
3763                                         $datarray["id"] = $posted_id;
3764
3765                                         $r = q("SELECT `parent`, `parent-uri` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3766                                                 intval($posted_id),
3767                                                 intval($importer['importer_uid'])
3768                                         );
3769                                         if(count($r)) {
3770                                                 $parent = $r[0]['parent'];
3771                                                 $parent_uri = $r[0]['parent-uri'];
3772                                         }
3773
3774                                         if(! $is_like) {
3775                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
3776                                                         dbesc(datetime_convert()),
3777                                                         intval($importer['importer_uid']),
3778                                                         intval($r[0]['parent'])
3779                                                 );
3780
3781                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d",
3782                                                         dbesc(datetime_convert()),
3783                                                         intval($importer['importer_uid']),
3784                                                         intval($posted_id)
3785                                                 );
3786                                         }
3787
3788                                         if($posted_id && $parent) {
3789
3790                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
3791
3792                                                 if((! $is_like) && (! $importer['self'])) {
3793
3794                                                         require_once('include/enotify.php');
3795
3796                                                         notification(array(
3797                                                                 'type'         => NOTIFY_COMMENT,
3798                                                                 'notify_flags' => $importer['notify-flags'],
3799                                                                 'language'     => $importer['language'],
3800                                                                 'to_name'      => $importer['username'],
3801                                                                 'to_email'     => $importer['email'],
3802                                                                 'uid'          => $importer['importer_uid'],
3803                                                                 'item'         => $datarray,
3804                                                                 'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
3805                                                                 'source_name'  => stripslashes($datarray['author-name']),
3806                                                                 'source_link'  => $datarray['author-link'],
3807                                                                 'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
3808                                                                         ? $importer['thumb'] : $datarray['author-avatar']),
3809                                                                 'verb'         => ACTIVITY_POST,
3810                                                                 'otype'        => 'item',
3811                                                                 'parent'       => $parent,
3812                                                                 'parent_uri'   => $parent_uri,
3813                                                         ));
3814
3815                                                 }
3816                                         }
3817
3818                                         return 0;
3819                                         // NOTREACHED
3820                                 }
3821                         }
3822                         else {
3823
3824                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
3825
3826                                 $item_id  = $item->get_id();
3827                                 $datarray = get_atom_elements($feed,$item);
3828
3829                                 if($importer['rel'] == CONTACT_IS_FOLLOWER)
3830                                         continue;
3831
3832                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3833                                         dbesc($item_id),
3834                                         intval($importer['importer_uid'])
3835                                 );
3836
3837                                 // Update content if 'updated' changes
3838
3839                                 if(count($r)) {
3840                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3841
3842                                                 // do not accept (ignore) an earlier edit than one we currently have.
3843                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3844                                                         continue;
3845
3846                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3847                                                         dbesc($datarray['title']),
3848                                                         dbesc($datarray['body']),
3849                                                         dbesc($datarray['tag']),
3850                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3851                                                         dbesc(datetime_convert()),
3852                                                         dbesc($item_id),
3853                                                         intval($importer['importer_uid'])
3854                                                 );
3855                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3856                                         }
3857
3858                                         // update last-child if it changes
3859
3860                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
3861                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
3862                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
3863                                                         dbesc(datetime_convert()),
3864                                                         dbesc($parent_uri),
3865                                                         intval($importer['importer_uid'])
3866                                                 );
3867                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
3868                                                         intval($allow[0]['data']),
3869                                                         dbesc(datetime_convert()),
3870                                                         dbesc($item_id),
3871                                                         intval($importer['importer_uid'])
3872                                                 );
3873                                         }
3874                                         continue;
3875                                 }
3876
3877                                 $datarray['parent-uri'] = $parent_uri;
3878                                 $datarray['uid'] = $importer['importer_uid'];
3879                                 $datarray['contact-id'] = $importer['id'];
3880                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3881                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3882                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3883                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3884                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3885                                         $datarray['type'] = 'activity';
3886                                         $datarray['gravity'] = GRAVITY_LIKE;
3887                                         // only one like or dislike per person
3888                                         // splitted into two queries for performance issues
3889                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
3890                                                 intval($datarray['uid']),
3891                                                 intval($datarray['contact-id']),
3892                                                 dbesc($datarray['verb']),
3893                                                 dbesc($parent_uri)
3894                                         );
3895                                         if($r && count($r))
3896                                                 continue;
3897
3898                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
3899                                                 intval($datarray['uid']),
3900                                                 intval($datarray['contact-id']),
3901                                                 dbesc($datarray['verb']),
3902                                                 dbesc($parent_uri)
3903                                         );
3904                                         if($r && count($r))
3905                                                 continue;
3906
3907                                 }
3908
3909                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3910
3911                                         $xo = parse_xml_string($datarray['object'],false);
3912                                         $xt = parse_xml_string($datarray['target'],false);
3913
3914                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
3915                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
3916                                                         dbesc($xt->id),
3917                                                         intval($importer['importer_uid'])
3918                                                 );
3919                                                 if(! count($r))
3920                                                         continue;
3921
3922                                                 // extract tag, if not duplicate, add to parent item
3923                                                 if($xo->content) {
3924                                                         if(! (stristr($r[0]['tag'],trim($xo->content)))) {
3925                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
3926                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
3927                                                                         intval($r[0]['id'])
3928                                                                 );
3929                                                                 create_tags_from_item($r[0]['id']);
3930                                                         }
3931                                                 }
3932                                         }
3933                                 }
3934
3935                                 $posted_id = item_store($datarray);
3936
3937                                 // find out if our user is involved in this conversation and wants to be notified.
3938
3939                                 if(!x($datarray['type']) || $datarray['type'] != 'activity') {
3940
3941                                         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0",
3942                                                 dbesc($top_uri),
3943                                                 intval($importer['importer_uid'])
3944                                         );
3945
3946                                         if(count($myconv)) {
3947                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
3948
3949                                                 // first make sure this isn't our own post coming back to us from a wall-to-wall event
3950                                                 if(! link_compare($datarray['author-link'],$importer_url)) {
3951
3952
3953                                                         foreach($myconv as $conv) {
3954
3955                                                                 // now if we find a match, it means we're in this conversation
3956
3957                                                                 if(! link_compare($conv['author-link'],$importer_url))
3958                                                                         continue;
3959
3960                                                                 require_once('include/enotify.php');
3961
3962                                                                 $conv_parent = $conv['parent'];
3963
3964                                                                 notification(array(
3965                                                                         'type'         => NOTIFY_COMMENT,
3966                                                                         'notify_flags' => $importer['notify-flags'],
3967                                                                         'language'     => $importer['language'],
3968                                                                         'to_name'      => $importer['username'],
3969                                                                         'to_email'     => $importer['email'],
3970                                                                         'uid'          => $importer['importer_uid'],
3971                                                                         'item'         => $datarray,
3972                                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
3973                                                                         'source_name'  => stripslashes($datarray['author-name']),
3974                                                                         'source_link'  => $datarray['author-link'],
3975                                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
3976                                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
3977                                                                         'verb'         => ACTIVITY_POST,
3978                                                                         'otype'        => 'item',
3979                                                                         'parent'       => $conv_parent,
3980                                                                         'parent_uri'   => $parent_uri
3981
3982                                                                 ));
3983
3984                                                                 // only send one notification
3985                                                                 break;
3986                                                         }
3987                                                 }
3988                                         }
3989                                 }
3990                                 continue;
3991                         }
3992                 }
3993
3994                 else {
3995
3996                         // Head post of a conversation. Have we seen it? If not, import it.
3997
3998
3999                         $item_id  = $item->get_id();
4000                         $datarray = get_atom_elements($feed,$item);
4001
4002                         if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
4003                                 $ev = bbtoevent($datarray['body']);
4004                                 if((x($ev,'desc') || x($ev,'summary')) && x($ev,'start')) {
4005                                         $ev['cid'] = $importer['id'];
4006                                         $ev['uid'] = $importer['uid'];
4007                                         $ev['uri'] = $item_id;
4008                                         $ev['edited'] = $datarray['edited'];
4009                                         $ev['private'] = $datarray['private'];
4010                                         $ev['guid'] = $datarray['guid'];
4011
4012                                         $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4013                                                 dbesc($item_id),
4014                                                 intval($importer['uid'])
4015                                         );
4016                                         if(count($r))
4017                                                 $ev['id'] = $r[0]['id'];
4018                                         $xyz = event_store($ev);
4019                                         continue;
4020                                 }
4021                         }
4022
4023                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4024                                 dbesc($item_id),
4025                                 intval($importer['importer_uid'])
4026                         );
4027
4028                         // Update content if 'updated' changes
4029
4030                         if(count($r)) {
4031                                 if (edited_timestamp_is_newer($r[0], $datarray)) {
4032
4033                                         // do not accept (ignore) an earlier edit than one we currently have.
4034                                         if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
4035                                                 continue;
4036
4037                                         $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4038                                                 dbesc($datarray['title']),
4039                                                 dbesc($datarray['body']),
4040                                                 dbesc($datarray['tag']),
4041                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
4042                                                 dbesc(datetime_convert()),
4043                                                 dbesc($item_id),
4044                                                 intval($importer['importer_uid'])
4045                                         );
4046                                         create_tags_from_itemuri($item_id, $importer['importer_uid']);
4047                                         update_thread_uri($item_id, $importer['importer_uid']);
4048                                 }
4049
4050                                 // update last-child if it changes
4051
4052                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
4053                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
4054                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4055                                                 intval($allow[0]['data']),
4056                                                 dbesc(datetime_convert()),
4057                                                 dbesc($item_id),
4058                                                 intval($importer['importer_uid'])
4059                                         );
4060                                 }
4061                                 continue;
4062                         }
4063
4064                         $datarray['parent-uri'] = $item_id;
4065                         $datarray['uid'] = $importer['importer_uid'];
4066                         $datarray['contact-id'] = $importer['id'];
4067
4068
4069                         if(! link_compare($datarray['owner-link'],$importer['url'])) {
4070                                 // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
4071                                 // but otherwise there's a possible data mixup on the sender's system.
4072                                 // the tgroup delivery code called from item_store will correct it if it's a forum,
4073                                 // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
4074                                 logger('local_delivery: Correcting item owner.', LOGGER_DEBUG);
4075                                 $datarray['owner-name']   = $importer['senderName'];
4076                                 $datarray['owner-link']   = $importer['url'];
4077                                 $datarray['owner-avatar'] = $importer['thumb'];
4078                         }
4079
4080                         if(($importer['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['importer_uid'],$datarray)))
4081                                 continue;
4082
4083                         // This is my contact on another system, but it's really me.
4084                         // Turn this into a wall post.
4085                         $notify = item_is_remote_self($importer, $datarray);
4086
4087                         $posted_id = item_store($datarray, false, $notify);
4088
4089                         if(stristr($datarray['verb'],ACTIVITY_POKE)) {
4090                                 $verb = urldecode(substr($datarray['verb'],strpos($datarray['verb'],'#')+1));
4091                                 if(! $verb)
4092                                         continue;
4093                                 $xo = parse_xml_string($datarray['object'],false);
4094
4095                                 if(($xo->type == ACTIVITY_OBJ_PERSON) && ($xo->id)) {
4096
4097                                         // somebody was poked/prodded. Was it me?
4098
4099                                         $links = parse_xml_string("<links>".unxmlify($xo->link)."</links>",false);
4100
4101                                 foreach($links->link as $l) {
4102                                 $atts = $l->attributes();
4103                                 switch($atts['rel']) {
4104                                         case "alternate":
4105                                                                 $Blink = $atts['href'];
4106                                                                 break;
4107                                                         default:
4108                                                                 break;
4109                                     }
4110                                 }
4111                                         if($Blink && link_compare($Blink,$a->get_baseurl() . '/profile/' . $importer['nickname'])) {
4112
4113                                                 // send a notification
4114                                                 require_once('include/enotify.php');
4115
4116                                                 notification(array(
4117                                                         'type'         => NOTIFY_POKE,
4118                                                         'notify_flags' => $importer['notify-flags'],
4119                                                         'language'     => $importer['language'],
4120                                                         'to_name'      => $importer['username'],
4121                                                         'to_email'     => $importer['email'],
4122                                                         'uid'          => $importer['importer_uid'],
4123                                                         'item'         => $datarray,
4124                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4125                                                         'source_name'  => stripslashes($datarray['author-name']),
4126                                                         'source_link'  => $datarray['author-link'],
4127                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4128                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4129                                                         'verb'         => $datarray['verb'],
4130                                                         'otype'        => 'person',
4131                                                         'activity'     => $verb,
4132                                                         'parent'       => $datarray['parent']
4133                                                 ));
4134                                         }
4135                                 }
4136                         }
4137
4138                         continue;
4139                 }
4140         }
4141
4142         return 0;
4143         // NOTREACHED
4144
4145 }
4146
4147
4148 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
4149         $url = notags(trim($datarray['author-link']));
4150         $name = notags(trim($datarray['author-name']));
4151         $photo = notags(trim($datarray['author-avatar']));
4152
4153         if (is_object($item)) {
4154                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
4155                 if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
4156                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
4157         } else
4158                 $nick = $item;
4159
4160         if(is_array($contact)) {
4161                 if(($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
4162                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
4163                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
4164                                 intval(CONTACT_IS_FRIEND),
4165                                 intval($contact['id']),
4166                                 intval($importer['uid'])
4167                         );
4168                 }
4169                 // send email notification to owner?
4170         }
4171         else {
4172
4173                 // create contact record
4174
4175                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
4176                         `blocked`, `readonly`, `pending`, `writable` )
4177                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
4178                         intval($importer['uid']),
4179                         dbesc(datetime_convert()),
4180                         dbesc($url),
4181                         dbesc(normalise_link($url)),
4182                         dbesc($name),
4183                         dbesc($nick),
4184                         dbesc($photo),
4185                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
4186                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
4187                 );
4188                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
4189                                 intval($importer['uid']),
4190                                 dbesc($url)
4191                 );
4192                 if(count($r))
4193                                 $contact_record = $r[0];
4194
4195                 // create notification
4196                 $hash = random_string();
4197
4198                 if(is_array($contact_record)) {
4199                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
4200                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
4201                                 intval($importer['uid']),
4202                                 intval($contact_record['id']),
4203                                 dbesc($hash),
4204                                 dbesc(datetime_convert())
4205                         );
4206                 }
4207
4208                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
4209                         intval($importer['uid'])
4210                 );
4211                 $a = get_app();
4212                 if(count($r)) {
4213
4214                         if(intval($r[0]['def_gid'])) {
4215                                 require_once('include/group.php');
4216                                 group_add_member($r[0]['uid'],'',$contact_record['id'],$r[0]['def_gid']);
4217                         }
4218
4219                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) &&
4220                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE))) {
4221
4222                                 notification(array(
4223                                         'type'         => NOTIFY_INTRO,
4224                                         'notify_flags' => $r[0]['notify-flags'],
4225                                         'language'     => $r[0]['language'],
4226                                         'to_name'      => $r[0]['username'],
4227                                         'to_email'     => $r[0]['email'],
4228                                         'uid'          => $r[0]['uid'],
4229                                         'link'             => $a->get_baseurl() . '/notifications/intro',
4230                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
4231                                         'source_link'  => $contact_record['url'],
4232                                         'source_photo' => $contact_record['photo'],
4233                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
4234                                         'otype'        => 'intro'
4235                                 ));
4236
4237                         }
4238                 }
4239         }
4240 }
4241
4242 function lose_follower($importer,$contact,$datarray,$item) {
4243
4244         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
4245                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4246                         intval(CONTACT_IS_SHARING),
4247                         intval($contact['id'])
4248                 );
4249         }
4250         else {
4251                 contact_remove($contact['id']);
4252         }
4253 }
4254
4255 function lose_sharer($importer,$contact,$datarray,$item) {
4256
4257         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
4258                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4259                         intval(CONTACT_IS_FOLLOWER),
4260                         intval($contact['id'])
4261                 );
4262         }
4263         else {
4264                 contact_remove($contact['id']);
4265         }
4266 }
4267
4268
4269 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
4270
4271         $a = get_app();
4272
4273         if(is_array($importer)) {
4274                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
4275                         intval($importer['uid'])
4276                 );
4277         }
4278
4279         // Diaspora has different message-ids in feeds than they do
4280         // through the direct Diaspora protocol. If we try and use
4281         // the feed, we'll get duplicates. So don't.
4282
4283         if((! count($r)) || $contact['network'] === NETWORK_DIASPORA)
4284                 return;
4285
4286         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
4287
4288         // Use a single verify token, even if multiple hubs
4289
4290         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
4291
4292         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
4293
4294         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
4295
4296         if(!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
4297                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
4298                         dbesc($verify_token),
4299                         intval($contact['id'])
4300                 );
4301         }
4302
4303         post_url($url,$params);
4304
4305         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
4306
4307         return;
4308
4309 }
4310
4311
4312 function atom_author($tag,$name,$uri,$h,$w,$photo,$geo) {
4313         $o = '';
4314         if(! $tag)
4315                 return $o;
4316         $name = xmlify($name);
4317         $uri = xmlify($uri);
4318         $h = intval($h);
4319         $w = intval($w);
4320         $photo = xmlify($photo);
4321
4322
4323         $o .= "<$tag>\r\n";
4324         $o .= "\t<name>$name</name>\r\n";
4325         $o .= "\t<uri>$uri</uri>\r\n";
4326         $o .= "\t".'<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4327         $o .= "\t".'<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4328
4329         if ($tag == "author") {
4330
4331                 if($geo)
4332                         $o .= '<georss:point>'.xmlify($geo).'</georss:point>'."\r\n";
4333
4334                 $r = q("SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
4335                                 `profile`.`name`, `profile`.`pub_keywords`, `profile`.`about`,
4336                                 `profile`.`homepage`,`contact`.`nick` FROM `profile`
4337                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
4338                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
4339                                 WHERE `profile`.`is-default` AND `contact`.`self` AND
4340                                         NOT `user`.`hidewall` AND `contact`.`nurl`='%s'",
4341                         dbesc(normalise_link($uri)));
4342                 if ($r) {
4343                         $location = '';
4344                         if($r[0]['locality'])
4345                                 $location .= $r[0]['locality'];
4346                         if($r[0]['region']) {
4347                                 if($location)
4348                                         $location .= ', ';
4349                                 $location .= $r[0]['region'];
4350                         }
4351                         if($r[0]['country-name']) {
4352                                 if($location)
4353                                         $location .= ', ';
4354                                 $location .= $r[0]['country-name'];
4355                         }
4356
4357                         $o .= "\t<poco:preferredUsername>".xmlify($r[0]["nick"])."</poco:preferredUsername>\r\n";
4358                         $o .= "\t<poco:displayName>".xmlify($r[0]["name"])."</poco:displayName>\r\n";
4359                         $o .= "\t<poco:note>".xmlify($r[0]["about"])."</poco:note>\r\n";
4360                         $o .= "\t<poco:address>\r\n";
4361                         $o .= "\t\t<poco:formatted>".xmlify($location)."</poco:formatted>\r\n";
4362                         $o .= "\t</poco:address>\r\n";
4363                         $o .= "\t<poco:urls>\r\n";
4364                         $o .= "\t<poco:type>homepage</poco:type>\r\n";
4365                         $o .= "\t\t<poco:value>".xmlify($r[0]["homepage"])."</poco:value>\r\n";
4366                         $o .= "\t\t<poco:primary>true</poco:primary>\r\n";
4367                         $o .= "\t</poco:urls>\r\n";
4368                 }
4369         }
4370
4371         call_hooks('atom_author', $o);
4372
4373         $o .= "</$tag>\r\n";
4374         return $o;
4375 }
4376
4377 function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
4378
4379         $a = get_app();
4380
4381         if(! $item['parent'])
4382                 return;
4383
4384         if($item['deleted'])
4385                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
4386
4387
4388         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
4389                 $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid);
4390         else
4391                 $body = $item['body'];
4392
4393
4394         $o = "\r\n\r\n<entry>\r\n";
4395
4396         if(is_array($author))
4397                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb'], $item['coord']);
4398         else
4399                 $o .= atom_author('author',(($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']), $item['coord']);
4400         if(strlen($item['owner-name']))
4401                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar'], $item['coord']);
4402
4403         if(($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
4404                 $parent = q("SELECT `guid` FROM `item` WHERE `id` = %d", intval($item["parent"]));
4405                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
4406                 $o .= '<thr:in-reply-to ref="'.xmlify($parent_item).'" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$parent[0]['guid']).'" />'."\r\n";
4407         }
4408
4409         $htmlbody = $body;
4410
4411         if ($item['title'] != "")
4412                 $htmlbody = "[b]".$item['title']."[/b]\n\n".$htmlbody;
4413
4414         $htmlbody = bbcode($htmlbody, false, false, 7);
4415
4416         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
4417         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
4418         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
4419         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
4420         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
4421         $o .= '<content type="' . $type . '" >' . xmlify((($type === 'html') ? $htmlbody : $body)) . '</content>' . "\r\n";
4422         $o .= '<link rel="alternate" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$item['guid']).'" />'."\r\n";
4423
4424         $o .= '<status_net notice_id="'.$item['id'].'"></status_net>'."\r\n";
4425
4426         if($comment)
4427                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
4428
4429         if($item['location']) {
4430                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
4431                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
4432         }
4433
4434         if($item['coord'])
4435                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
4436
4437         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
4438                 $o .= '<dfrn:private>' . (($item['private']) ? $item['private'] : 1) . '</dfrn:private>' . "\r\n";
4439
4440         if($item['extid'])
4441                 $o .= '<dfrn:extid>' . xmlify($item['extid']) . '</dfrn:extid>' . "\r\n";
4442         if($item['bookmark'])
4443                 $o .= '<dfrn:bookmark>true</dfrn:bookmark>' . "\r\n";
4444
4445         if($item['app'])
4446                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
4447
4448         if($item['guid'])
4449                 $o .= '<dfrn:diaspora_guid>' . $item['guid'] . '</dfrn:diaspora_guid>' . "\r\n";
4450
4451         if($item['signed_text']) {
4452                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
4453                 $o .= '<dfrn:diaspora_signature>' . xmlify($sign) . '</dfrn:diaspora_signature>' . "\r\n";
4454         }
4455
4456         $verb = construct_verb($item);
4457         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
4458         $actobj = construct_activity_object($item);
4459         if(strlen($actobj))
4460                 $o .= $actobj;
4461         $actarg = construct_activity_target($item);
4462         if(strlen($actarg))
4463                 $o .= $actarg;
4464
4465         $tags = item_getfeedtags($item);
4466         if(count($tags)) {
4467                 foreach($tags as $t)
4468                         if (($type != 'html') OR ($t[0] != "@"))
4469                                 $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
4470         }
4471
4472         // To-Do:
4473         // To support these elements, the API needs to be enhanced
4474         //$o .= '<link rel="ostatus:conversation" href="'.xmlify($a->get_baseurl().'/display/'.$owner['nickname'].'/'.$item['parent']).'"/>'."\r\n";
4475         //$o .= "\t".'<link rel="self" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4476         //$o .= "\t".'<link rel="edit" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4477
4478         $o .= item_get_attachment($item);
4479
4480         $o .= item_getfeedattach($item);
4481
4482         $mentioned = get_mentions($item);
4483         if($mentioned)
4484                 $o .= $mentioned;
4485
4486         call_hooks('atom_entry', $o);
4487
4488         $o .= '</entry>' . "\r\n";
4489
4490         return $o;
4491 }
4492
4493 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
4494
4495         if(get_config('system','disable_embedded'))
4496                 return $s;
4497
4498         $a = get_app();
4499
4500         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
4501         $site = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://'));
4502
4503         $orig_body = $s;
4504         $new_body = '';
4505
4506         $img_start = strpos($orig_body, '[img');
4507         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4508         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4509         while( ($img_st_close !== false) && ($img_len !== false) ) {
4510
4511                 $img_st_close++; // make it point to AFTER the closing bracket
4512                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
4513
4514                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
4515
4516
4517                 if(stristr($image , $site . '/photo/')) {
4518                         // Only embed locally hosted photos
4519                         $replace = false;
4520                         $i = basename($image);
4521                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
4522                         $x = strpos($i,'-');
4523
4524                         if($x) {
4525                                 $res = substr($i,$x+1);
4526                                 $i = substr($i,0,$x);
4527                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
4528                                         dbesc($i),
4529                                         intval($res),
4530                                         intval($uid)
4531                                 );
4532                                 if($r) {
4533
4534                                         // Check to see if we should replace this photo link with an embedded image
4535                                         // 1. No need to do so if the photo is public
4536                                         // 2. If there's a contact-id provided, see if they're in the access list
4537                                         //    for the photo. If so, embed it.
4538                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
4539                                         //    permissions, regardless of order but first check to see if they're an exact
4540                                         //    match to save some processing overhead.
4541
4542                                         if(has_permissions($r[0])) {
4543                                                 if($cid) {
4544                                                         $recips = enumerate_permissions($r[0]);
4545                                                         if(in_array($cid, $recips)) {
4546                                                                 $replace = true;
4547                                                         }
4548                                                 }
4549                                                 elseif($item) {
4550                                                         if(compare_permissions($item,$r[0]))
4551                                                                 $replace = true;
4552                                                 }
4553                                         }
4554                                         if($replace) {
4555                                                 $data = $r[0]['data'];
4556                                                 $type = $r[0]['type'];
4557
4558                                                 // If a custom width and height were specified, apply before embedding
4559                                                 if(preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
4560                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
4561
4562                                                         $width = intval($match[1]);
4563                                                         $height = intval($match[2]);
4564
4565                                                         $ph = new Photo($data, $type);
4566                                                         if($ph->is_valid()) {
4567                                                                 $ph->scaleImage(max($width, $height));
4568                                                                 $data = $ph->imageString();
4569                                                                 $type = $ph->getType();
4570                                                         }
4571                                                 }
4572
4573                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
4574                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
4575                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
4576                                         }
4577                                 }
4578                         }
4579                 }
4580
4581                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
4582                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
4583                 if($orig_body === false)
4584                         $orig_body = '';
4585
4586                 $img_start = strpos($orig_body, '[img');
4587                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4588                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4589         }
4590
4591         $new_body = $new_body . $orig_body;
4592
4593         return($new_body);
4594 }
4595
4596
4597 function has_permissions($obj) {
4598         if(($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
4599                 return true;
4600         return false;
4601 }
4602
4603 function compare_permissions($obj1,$obj2) {
4604         // first part is easy. Check that these are exactly the same.
4605         if(($obj1['allow_cid'] == $obj2['allow_cid'])
4606                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
4607                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
4608                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
4609                 return true;
4610
4611         // This is harder. Parse all the permissions and compare the resulting set.
4612
4613         $recipients1 = enumerate_permissions($obj1);
4614         $recipients2 = enumerate_permissions($obj2);
4615         sort($recipients1);
4616         sort($recipients2);
4617         if($recipients1 == $recipients2)
4618                 return true;
4619         return false;
4620 }
4621
4622 // returns an array of contact-ids that are allowed to see this object
4623
4624 function enumerate_permissions($obj) {
4625         require_once('include/group.php');
4626         $allow_people = expand_acl($obj['allow_cid']);
4627         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
4628         $deny_people  = expand_acl($obj['deny_cid']);
4629         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
4630         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
4631         $deny         = array_unique(array_merge($deny_people,$deny_groups));
4632         $recipients   = array_diff($recipients,$deny);
4633         return $recipients;
4634 }
4635
4636 function item_getfeedtags($item) {
4637         $ret = array();
4638         $matches = false;
4639         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4640         if($cnt) {
4641                 for($x = 0; $x < $cnt; $x ++) {
4642                         if($matches[1][$x])
4643                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
4644                 }
4645         }
4646         $matches = false;
4647         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4648         if($cnt) {
4649                 for($x = 0; $x < $cnt; $x ++) {
4650                         if($matches[1][$x])
4651                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
4652                 }
4653         }
4654         return $ret;
4655 }
4656
4657 function item_get_attachment($item) {
4658         $o = "";
4659         $siteinfo = get_attached_data($item["body"]);
4660
4661         switch($siteinfo["type"]) {
4662                 case 'link':
4663                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4664                         break;
4665                 case 'photo':
4666                         $imgdata = get_photo_info($siteinfo["image"]);
4667                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["image"]).'" type="'.$imgdata["mime"].'" length="'.$imgdata["size"].'"/>'."\r\n";
4668                         break;
4669                 case 'video':
4670                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4671                         break;
4672                 default:
4673                         break;
4674         }
4675
4676         return $o;
4677 }
4678
4679 function item_getfeedattach($item) {
4680         $ret = '';
4681         $arr = explode('[/attach],',$item['attach']);
4682         if(count($arr)) {
4683                 foreach($arr as $r) {
4684                         $matches = false;
4685                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches);
4686                         if($cnt) {
4687                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
4688                                 if(intval($matches[2]))
4689                                         $ret .= 'length="' . intval($matches[2]) . '" ';
4690                                 if($matches[4] !== ' ')
4691                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
4692                                 $ret .= ' />' . "\r\n";
4693                         }
4694                 }
4695         }
4696         return $ret;
4697 }
4698
4699
4700
4701 function item_expire($uid, $days, $network = "", $force = false) {
4702
4703         if((! $uid) || ($days < 1))
4704                 return;
4705
4706         // $expire_network_only = save your own wall posts
4707         // and just expire conversations started by others
4708
4709         $expire_network_only = get_pconfig($uid,'expire','network_only');
4710         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
4711
4712         if ($network != "") {
4713                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
4714                 // There is an index "uid_network_received" but not "uid_network_created"
4715                 // This avoids the creation of another index just for one purpose.
4716                 // And it doesn't really matter wether to look at "received" or "created"
4717                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4718         } else
4719                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4720
4721         $r = q("SELECT * FROM `item`
4722                 WHERE `uid` = %d $range
4723                 AND `id` = `parent`
4724                 $sql_extra
4725                 AND `deleted` = 0",
4726                 intval($uid),
4727                 intval($days)
4728         );
4729
4730         if(! count($r))
4731                 return;
4732
4733         $expire_items = get_pconfig($uid, 'expire','items');
4734         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
4735
4736         // Forcing expiring of items - but not notes and marked items
4737         if ($force)
4738                 $expire_items = true;
4739
4740         $expire_notes = get_pconfig($uid, 'expire','notes');
4741         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
4742
4743         $expire_starred = get_pconfig($uid, 'expire','starred');
4744         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
4745
4746         $expire_photos = get_pconfig($uid, 'expire','photos');
4747         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
4748
4749         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
4750
4751         foreach($r as $item) {
4752
4753                 // don't expire filed items
4754
4755                 if(strpos($item['file'],'[') !== false)
4756                         continue;
4757
4758                 // Only expire posts, not photos and photo comments
4759
4760                 if($expire_photos==0 && strlen($item['resource-id']))
4761                         continue;
4762                 if($expire_starred==0 && intval($item['starred']))
4763                         continue;
4764                 if($expire_notes==0 && $item['type']=='note')
4765                         continue;
4766                 if($expire_items==0 && $item['type']!='note')
4767                         continue;
4768
4769                 drop_item($item['id'],false);
4770         }
4771
4772         proc_run('php',"include/notifier.php","expire","$uid");
4773
4774 }
4775
4776
4777 function drop_items($items) {
4778         $uid = 0;
4779
4780         if(! local_user() && ! remote_user())
4781                 return;
4782
4783         if(count($items)) {
4784                 foreach($items as $item) {
4785                         $owner = drop_item($item,false);
4786                         if($owner && ! $uid)
4787                                 $uid = $owner;
4788                 }
4789         }
4790
4791         // multiple threads may have been deleted, send an expire notification
4792
4793         if($uid)
4794                 proc_run('php',"include/notifier.php","expire","$uid");
4795 }
4796
4797
4798 function drop_item($id,$interactive = true) {
4799
4800         $a = get_app();
4801
4802         // locate item to be deleted
4803
4804         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
4805                 intval($id)
4806         );
4807
4808         if(! count($r)) {
4809                 if(! $interactive)
4810                         return 0;
4811                 notice( t('Item not found.') . EOL);
4812                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4813         }
4814
4815         $item = $r[0];
4816
4817         $owner = $item['uid'];
4818
4819         $cid = 0;
4820
4821         // check if logged in user is either the author or owner of this item
4822
4823         if(is_array($_SESSION['remote'])) {
4824                 foreach($_SESSION['remote'] as $visitor) {
4825                         if($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
4826                                 $cid = $visitor['cid'];
4827                                 break;
4828                         }
4829                 }
4830         }
4831
4832
4833         if((local_user() == $item['uid']) || ($cid) || (! $interactive)) {
4834
4835                 // Check if we should do HTML-based delete confirmation
4836                 if($_REQUEST['confirm']) {
4837                         // <form> can't take arguments in its "action" parameter
4838                         // so add any arguments as hidden inputs
4839                         $query = explode_querystring($a->query_string);
4840                         $inputs = array();
4841                         foreach($query['args'] as $arg) {
4842                                 if(strpos($arg, 'confirm=') === false) {
4843                                         $arg_parts = explode('=', $arg);
4844                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
4845                                 }
4846                         }
4847
4848                         return replace_macros(get_markup_template('confirm.tpl'), array(
4849                                 '$method' => 'get',
4850                                 '$message' => t('Do you really want to delete this item?'),
4851                                 '$extra_inputs' => $inputs,
4852                                 '$confirm' => t('Yes'),
4853                                 '$confirm_url' => $query['base'],
4854                                 '$confirm_name' => 'confirmed',
4855                                 '$cancel' => t('Cancel'),
4856                         ));
4857                 }
4858                 // Now check how the user responded to the confirmation query
4859                 if($_REQUEST['canceled']) {
4860                         goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4861                 }
4862
4863                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
4864                 // delete the item
4865
4866                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
4867                         dbesc(datetime_convert()),
4868                         dbesc(datetime_convert()),
4869                         intval($item['id'])
4870                 );
4871                 create_tags_from_item($item['id']);
4872                 create_files_from_item($item['id']);
4873                 delete_thread($item['id'], $item['parent-uri']);
4874
4875                 // clean up categories and tags so they don't end up as orphans
4876
4877                 $matches = false;
4878                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
4879                 if($cnt) {
4880                         foreach($matches as $mtch) {
4881                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
4882                         }
4883                 }
4884
4885                 $matches = false;
4886
4887                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
4888                 if($cnt) {
4889                         foreach($matches as $mtch) {
4890                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
4891                         }
4892                 }
4893
4894                 // If item is a link to a photo resource, nuke all the associated photos
4895                 // (visitors will not have photo resources)
4896                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
4897                 // generate a resource-id and therefore aren't intimately linked to the item.
4898
4899                 if(strlen($item['resource-id'])) {
4900                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
4901                                 dbesc($item['resource-id']),
4902                                 intval($item['uid'])
4903                         );
4904                         // ignore the result
4905                 }
4906
4907                 // If item is a link to an event, nuke the event record.
4908
4909                 if(intval($item['event-id'])) {
4910                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
4911                                 intval($item['event-id']),
4912                                 intval($item['uid'])
4913                         );
4914                         // ignore the result
4915                 }
4916
4917                 // If item has attachments, drop them
4918
4919                 foreach(explode(",",$item['attach']) as $attach){
4920                         preg_match("|attach/(\d+)|", $attach, $matches);
4921                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
4922                                 intval($matches[1]),
4923                                 local_user()
4924                         );
4925                         // ignore the result
4926                 }
4927
4928
4929                 // clean up item_id and sign meta-data tables
4930
4931                 /*
4932                 // Old code - caused very long queries and warning entries in the mysql logfiles:
4933
4934                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
4935                         intval($item['id']),
4936                         intval($item['uid'])
4937                 );
4938
4939                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
4940                         intval($item['id']),
4941                         intval($item['uid'])
4942                 );
4943                 */
4944
4945                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
4946
4947                 // Creating list of parents
4948                 $r = q("select id from item where parent = %d and uid = %d",
4949                         intval($item['id']),
4950                         intval($item['uid'])
4951                 );
4952
4953                 $parentid = "";
4954
4955                 foreach ($r AS $row) {
4956                         if ($parentid != "")
4957                                 $parentid .= ", ";
4958
4959                         $parentid .= $row["id"];
4960                 }
4961
4962                 // Now delete them
4963                 if ($parentid != "") {
4964                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
4965
4966                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
4967                 }
4968
4969                 // If it's the parent of a comment thread, kill all the kids
4970
4971                 if($item['uri'] == $item['parent-uri']) {
4972                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
4973                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
4974                                 dbesc(datetime_convert()),
4975                                 dbesc(datetime_convert()),
4976                                 dbesc($item['parent-uri']),
4977                                 intval($item['uid'])
4978                         );
4979                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
4980                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
4981                         delete_thread_uri($item['parent-uri'], $item['uid']);
4982                         // ignore the result
4983                 }
4984                 else {
4985                         // ensure that last-child is set in case the comment that had it just got wiped.
4986                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
4987                                 dbesc(datetime_convert()),
4988                                 dbesc($item['parent-uri']),
4989                                 intval($item['uid'])
4990                         );
4991                         // who is the last child now?
4992                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
4993                                 dbesc($item['parent-uri']),
4994                                 intval($item['uid'])
4995                         );
4996                         if(count($r)) {
4997                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
4998                                         intval($r[0]['id'])
4999                                 );
5000                         }
5001
5002                         // Add a relayable_retraction signature for Diaspora.
5003                         store_diaspora_retract_sig($item, $a->user, $a->get_baseurl());
5004                 }
5005
5006                 $drop_id = intval($item['id']);
5007
5008                 // send the notification upstream/downstream as the case may be
5009
5010                 proc_run('php',"include/notifier.php","drop","$drop_id");
5011
5012                 if(! $interactive)
5013                         return $owner;
5014                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5015                 //NOTREACHED
5016         }
5017         else {
5018                 if(! $interactive)
5019                         return 0;
5020                 notice( t('Permission denied.') . EOL);
5021                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5022                 //NOTREACHED
5023         }
5024
5025 }
5026
5027
5028 function first_post_date($uid,$wall = false) {
5029         $r = q("select id, created from item
5030                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
5031                 and id = parent
5032                 order by created asc limit 1",
5033                 intval($uid),
5034                 intval($wall ? 1 : 0)
5035         );
5036         if(count($r)) {
5037 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
5038                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
5039         }
5040         return false;
5041 }
5042
5043 /* modified posted_dates() {below} to arrange the list in years */
5044 function list_post_dates($uid, $wall) {
5045         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5046
5047         $dthen = first_post_date($uid, $wall);
5048         if(! $dthen)
5049                 return array();
5050
5051         // Set the start and end date to the beginning of the month
5052         $dnow = substr($dnow,0,8).'01';
5053         $dthen = substr($dthen,0,8).'01';
5054
5055         $ret = array();
5056
5057         // Starting with the current month, get the first and last days of every
5058         // month down to and including the month of the first post
5059         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5060                 $dyear = intval(substr($dnow,0,4));
5061                 $dstart = substr($dnow,0,8) . '01';
5062                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5063                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5064                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5065                 $str = day_translate(datetime_convert('','',$dnow,'F'));
5066                 if(! $ret[$dyear])
5067                         $ret[$dyear] = array();
5068                 $ret[$dyear][] = array($str,$end_month,$start_month);
5069                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5070         }
5071         return $ret;
5072 }
5073
5074 function posted_dates($uid,$wall) {
5075         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5076
5077         $dthen = first_post_date($uid,$wall);
5078         if(! $dthen)
5079                 return array();
5080
5081         // Set the start and end date to the beginning of the month
5082         $dnow = substr($dnow,0,8).'01';
5083         $dthen = substr($dthen,0,8).'01';
5084
5085         $ret = array();
5086         // Starting with the current month, get the first and last days of every
5087         // month down to and including the month of the first post
5088         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5089                 $dstart = substr($dnow,0,8) . '01';
5090                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5091                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5092                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5093                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
5094                 $ret[] = array($str,$end_month,$start_month);
5095                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5096         }
5097         return $ret;
5098 }
5099
5100
5101 function posted_date_widget($url,$uid,$wall) {
5102         $o = '';
5103
5104         if(! feature_enabled($uid,'archives'))
5105                 return $o;
5106
5107         // For former Facebook folks that left because of "timeline"
5108
5109 /*      if($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
5110                 return $o;*/
5111
5112         $visible_years = get_pconfig($uid,'system','archive_visible_years');
5113         if(! $visible_years)
5114                 $visible_years = 5;
5115
5116         $ret = list_post_dates($uid,$wall);
5117
5118         if(! count($ret))
5119                 return $o;
5120
5121         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
5122         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
5123
5124         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
5125                 '$title' => t('Archives'),
5126                 '$size' => $visible_years,
5127                 '$cutoff_year' => $cutoff_year,
5128                 '$cutoff' => $cutoff,
5129                 '$url' => $url,
5130                 '$dates' => $ret,
5131                 '$showmore' => t('show more')
5132
5133         ));
5134         return $o;
5135 }
5136
5137 function store_diaspora_retract_sig($item, $user, $baseurl) {
5138         // Note that we can't add a target_author_signature
5139         // if the comment was deleted by a remote user. That should be ok, because if a remote user is deleting
5140         // the comment, that means we're the home of the post, and Diaspora will only
5141         // check the parent_author_signature of retractions that it doesn't have to relay further
5142         //
5143         // I don't think this function gets called for an "unlike," but I'll check anyway
5144
5145         $enabled = intval(get_config('system','diaspora_enabled'));
5146         if(! $enabled) {
5147                 logger('drop_item: diaspora support disabled, not storing retraction signature', LOGGER_DEBUG);
5148                 return;
5149         }
5150
5151         logger('drop_item: storing diaspora retraction signature');
5152
5153         $signed_text = $item['guid'] . ';' . ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
5154
5155         if(local_user() == $item['uid']) {
5156
5157                 $handle = $user['nickname'] . '@' . substr($baseurl, strpos($baseurl,'://') + 3);
5158                 $authorsig = base64_encode(rsa_sign($signed_text,$user['prvkey'],'sha256'));
5159         }
5160         else {
5161                 $r = q("SELECT `nick`, `url` FROM `contact` WHERE `id` = '%d' LIMIT 1",
5162                         $item['contact-id'] // If this function gets called, drop_item() has already checked remote_user() == $item['contact-id']
5163                 );
5164                 if(count($r)) {
5165                         // The below handle only works for NETWORK_DFRN. I think that's ok, because this function
5166                         // only handles DFRN deletes
5167                         $handle_baseurl_start = strpos($r['url'],'://') + 3;
5168                         $handle_baseurl_length = strpos($r['url'],'/profile') - $handle_baseurl_start;
5169                         $handle = $r['nick'] . '@' . substr($r['url'], $handle_baseurl_start, $handle_baseurl_length);
5170                         $authorsig = '';
5171                 }
5172         }
5173
5174         if(isset($handle))
5175                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
5176                         intval($item['id']),
5177                         dbesc($signed_text),
5178                         dbesc($authorsig),
5179                         dbesc($handle)
5180                 );
5181
5182         return;
5183 }