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                 $photo_failure = false;
2385                 $have_photo = false;
2386
2387                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
2388                         intval($contact['id']),
2389                         intval($contact['uid'])
2390                 );
2391                 if(count($r)) {
2392                         $resource_id = $r[0]['resource-id'];
2393                         $have_photo = true;
2394                 }
2395                 else {
2396                         $resource_id = photo_new_resource();
2397                 }
2398
2399                 $img_str = fetch_url($photo_url,true);
2400                 // guess mimetype from headers or filename
2401                 $type = guess_image_type($photo_url,true);
2402
2403
2404                 $img = new Photo($img_str, $type);
2405                 if($img->is_valid()) {
2406                         if($have_photo) {
2407                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
2408                                         dbesc($resource_id),
2409                                         intval($contact['id']),
2410                                         intval($contact['uid'])
2411                                 );
2412                         }
2413
2414                         $img->scaleImageSquare(175);
2415
2416                         $hash = $resource_id;
2417                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 4);
2418
2419                         $img->scaleImage(80);
2420                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 5);
2421
2422                         $img->scaleImage(48);
2423                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 6);
2424
2425                         $a = get_app();
2426
2427                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
2428                                 WHERE `uid` = %d AND `id` = %d",
2429                                 dbesc(datetime_convert()),
2430                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.'.$img->getExt()),
2431                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.'.$img->getExt()),
2432                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.'.$img->getExt()),
2433                                 intval($contact['uid']),
2434                                 intval($contact['id'])
2435                         );
2436                 }
2437         }
2438
2439         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
2440                 if ($name_updated > $contact_updated)
2441                         $contact_updated = $name_updated;
2442
2443                 $r = q("select * from contact where uid = %d and id = %d limit 1",
2444                         intval($contact['uid']),
2445                         intval($contact['id'])
2446                 );
2447
2448                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d",
2449                         dbesc(notags(trim($new_name))),
2450                         dbesc(datetime_convert()),
2451                         intval($contact['uid']),
2452                         intval($contact['id'])
2453                 );
2454
2455                 // do our best to update the name on content items
2456
2457                 if(count($r)) {
2458                         q("update item set `author-name` = '%s' where `author-name` = '%s' and `author-link` = '%s' and uid = %d",
2459                                 dbesc(notags(trim($new_name))),
2460                                 dbesc($r[0]['name']),
2461                                 dbesc($r[0]['url']),
2462                                 intval($contact['uid'])
2463                         );
2464                 }
2465         }
2466
2467         if ($contact_updated AND $new_name AND $photo_url)
2468                 poco_check($contact['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $contact['id'], $contact['uid']);
2469
2470         if(strlen($birthday)) {
2471                 if(substr($birthday,0,4) != $contact['bdyear']) {
2472                         logger('consume_feed: updating birthday: ' . $birthday);
2473
2474                         /**
2475                          *
2476                          * Add new birthday event for this person
2477                          *
2478                          * $bdtext is just a readable placeholder in case the event is shared
2479                          * with others. We will replace it during presentation to our $importer
2480                          * to contain a sparkle link and perhaps a photo.
2481                          *
2482                          */
2483
2484                         $bdtext = sprintf( t('%s\'s birthday'), $contact['name']);
2485                         $bdtext2 = sprintf( t('Happy Birthday %s'), ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ) ;
2486
2487
2488                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`summary`,`desc`,`type`)
2489                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ",
2490                                 intval($contact['uid']),
2491                                 intval($contact['id']),
2492                                 dbesc(datetime_convert()),
2493                                 dbesc(datetime_convert()),
2494                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
2495                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
2496                                 dbesc($bdtext),
2497                                 dbesc($bdtext2),
2498                                 dbesc('birthday')
2499                         );
2500
2501
2502                         // update bdyear
2503
2504                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d",
2505                                 dbesc(substr($birthday,0,4)),
2506                                 intval($contact['uid']),
2507                                 intval($contact['id'])
2508                         );
2509
2510                         // This function is called twice without reloading the contact
2511                         // Make sure we only create one event. This is why &$contact
2512                         // is a reference var in this function
2513
2514                         $contact['bdyear'] = substr($birthday,0,4);
2515                 }
2516         }
2517
2518         $community_page = 0;
2519         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
2520         if($rawtags) {
2521                 $community_page = intval($rawtags[0]['data']);
2522         }
2523         if(is_array($contact) && intval($contact['forum']) != $community_page) {
2524                 q("update contact set forum = %d where id = %d",
2525                         intval($community_page),
2526                         intval($contact['id'])
2527                 );
2528                 $contact['forum'] = (string) $community_page;
2529         }
2530
2531
2532         // process any deleted entries
2533
2534         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
2535         if(is_array($del_entries) && count($del_entries) && $pass != 2) {
2536                 foreach($del_entries as $dentry) {
2537                         $deleted = false;
2538                         if(isset($dentry['attribs']['']['ref'])) {
2539                                 $uri = $dentry['attribs']['']['ref'];
2540                                 $deleted = true;
2541                                 if(isset($dentry['attribs']['']['when'])) {
2542                                         $when = $dentry['attribs']['']['when'];
2543                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
2544                                 }
2545                                 else
2546                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
2547                         }
2548                         if($deleted && is_array($contact)) {
2549                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN `contact` on `item`.`contact-id` = `contact`.`id`
2550                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
2551                                         dbesc($uri),
2552                                         intval($importer['uid']),
2553                                         intval($contact['id'])
2554                                 );
2555                                 if(count($r)) {
2556                                         $item = $r[0];
2557
2558                                         if(! $item['deleted'])
2559                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
2560
2561                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2562                                                 $xo = parse_xml_string($item['object'],false);
2563                                                 $xt = parse_xml_string($item['target'],false);
2564                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
2565                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
2566                                                                 dbesc($xt->id),
2567                                                                 intval($importer['importer_uid'])
2568                                                         );
2569                                                         if(count($i)) {
2570
2571                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
2572
2573                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
2574                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
2575                                                                 $author_copy = (($item['origin']) ? true : false);
2576
2577                                                                 if($owner_remove && $author_copy)
2578                                                                         continue;
2579                                                                 if($author_remove || $owner_remove) {
2580                                                                         $tags = explode(',',$i[0]['tag']);
2581                                                                         $newtags = array();
2582                                                                         if(count($tags)) {
2583                                                                                 foreach($tags as $tag)
2584                                                                                         if(trim($tag) !== trim($xo->body))
2585                                                                                                 $newtags[] = trim($tag);
2586                                                                         }
2587                                                                         q("update item set tag = '%s' where id = %d",
2588                                                                                 dbesc(implode(',',$newtags)),
2589                                                                                 intval($i[0]['id'])
2590                                                                         );
2591                                                                         create_tags_from_item($i[0]['id']);
2592                                                                 }
2593                                                         }
2594                                                 }
2595                                         }
2596
2597                                         if($item['uri'] == $item['parent-uri']) {
2598                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2599                                                         `body` = '', `title` = ''
2600                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
2601                                                         dbesc($when),
2602                                                         dbesc(datetime_convert()),
2603                                                         dbesc($item['uri']),
2604                                                         intval($importer['uid'])
2605                                                 );
2606                                                 create_tags_from_itemuri($item['uri'], $importer['uid']);
2607                                                 create_files_from_itemuri($item['uri'], $importer['uid']);
2608                                                 update_thread_uri($item['uri'], $importer['uid']);
2609                                         }
2610                                         else {
2611                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2612                                                         `body` = '', `title` = ''
2613                                                         WHERE `uri` = '%s' AND `uid` = %d",
2614                                                         dbesc($when),
2615                                                         dbesc(datetime_convert()),
2616                                                         dbesc($uri),
2617                                                         intval($importer['uid'])
2618                                                 );
2619                                                 create_tags_from_itemuri($uri, $importer['uid']);
2620                                                 create_files_from_itemuri($uri, $importer['uid']);
2621                                                 if($item['last-child']) {
2622                                                         // ensure that last-child is set in case the comment that had it just got wiped.
2623                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2624                                                                 dbesc(datetime_convert()),
2625                                                                 dbesc($item['parent-uri']),
2626                                                                 intval($item['uid'])
2627                                                         );
2628                                                         // who is the last child now?
2629                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `moderated` = 0 AND `uid` = %d
2630                                                                 ORDER BY `created` DESC LIMIT 1",
2631                                                                         dbesc($item['parent-uri']),
2632                                                                         intval($importer['uid'])
2633                                                         );
2634                                                         if(count($r)) {
2635                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2636                                                                         intval($r[0]['id'])
2637                                                                 );
2638                                                         }
2639                                                 }
2640                                         }
2641                                 }
2642                         }
2643                 }
2644         }
2645
2646         // Now process the feed
2647
2648         if($feed->get_item_quantity()) {
2649
2650                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
2651
2652         // in inverse date order
2653                 if ($datedir)
2654                         $items = array_reverse($feed->get_items());
2655                 else
2656                         $items = $feed->get_items();
2657
2658
2659                 foreach($items as $item) {
2660
2661                         $is_reply = false;
2662                         $item_id = $item->get_id();
2663                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
2664                         if(isset($rawthread[0]['attribs']['']['ref'])) {
2665                                 $is_reply = true;
2666                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
2667                         }
2668
2669                         if(($is_reply) && is_array($contact)) {
2670
2671                                 if($pass == 1)
2672                                         continue;
2673
2674                                 // not allowed to post
2675
2676                                 if($contact['rel'] == CONTACT_IS_FOLLOWER)
2677                                         continue;
2678
2679
2680                                 // Have we seen it? If not, import it.
2681
2682                                 $item_id  = $item->get_id();
2683                                 $datarray = get_atom_elements($feed, $item, $contact);
2684
2685                                 if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2686                                         $datarray['author-name'] = $contact['name'];
2687                                 if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2688                                         $datarray['author-link'] = $contact['url'];
2689                                 if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2690                                         $datarray['author-avatar'] = $contact['thumb'];
2691
2692                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2693                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2694                                         continue;
2695                                 }
2696
2697                                 $force_parent = false;
2698                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2699                                         if($contact['network'] === NETWORK_OSTATUS)
2700                                                 $force_parent = true;
2701                                         if(strlen($datarray['title']))
2702                                                 unset($datarray['title']);
2703                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2704                                                 dbesc(datetime_convert()),
2705                                                 dbesc($parent_uri),
2706                                                 intval($importer['uid'])
2707                                         );
2708                                         $datarray['last-child'] = 1;
2709                                         update_thread_uri($parent_uri, $importer['uid']);
2710                                 }
2711
2712
2713                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2714                                         dbesc($item_id),
2715                                         intval($importer['uid'])
2716                                 );
2717
2718                                 // Update content if 'updated' changes
2719
2720                                 if(count($r)) {
2721                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2722
2723                                                 // do not accept (ignore) an earlier edit than one we currently have.
2724                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2725                                                         continue;
2726
2727                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2728                                                         dbesc($datarray['title']),
2729                                                         dbesc($datarray['body']),
2730                                                         dbesc($datarray['tag']),
2731                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2732                                                         dbesc(datetime_convert()),
2733                                                         dbesc($item_id),
2734                                                         intval($importer['uid'])
2735                                                 );
2736                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2737                                                 update_thread_uri($item_id, $importer['uid']);
2738                                         }
2739
2740                                         // update last-child if it changes
2741
2742                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2743                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
2744                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2745                                                         dbesc(datetime_convert()),
2746                                                         dbesc($parent_uri),
2747                                                         intval($importer['uid'])
2748                                                 );
2749                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
2750                                                         intval($allow[0]['data']),
2751                                                         dbesc(datetime_convert()),
2752                                                         dbesc($item_id),
2753                                                         intval($importer['uid'])
2754                                                 );
2755                                                 update_thread_uri($item_id, $importer['uid']);
2756                                         }
2757                                         continue;
2758                                 }
2759
2760
2761                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2762                                         // one way feed - no remote comment ability
2763                                         $datarray['last-child'] = 0;
2764                                 }
2765                                 $datarray['parent-uri'] = $parent_uri;
2766                                 $datarray['uid'] = $importer['uid'];
2767                                 $datarray['contact-id'] = $contact['id'];
2768                                 if(($datarray['verb'] === ACTIVITY_LIKE)
2769                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
2770                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
2771                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
2772                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
2773                                         $datarray['type'] = 'activity';
2774                                         $datarray['gravity'] = GRAVITY_LIKE;
2775                                         // only one like or dislike per person
2776                                         // splitted into two queries for performance issues
2777                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
2778                                                 intval($datarray['uid']),
2779                                                 intval($datarray['contact-id']),
2780                                                 dbesc($datarray['verb']),
2781                                                 dbesc($parent_uri)
2782                                         );
2783                                         if($r && count($r))
2784                                                 continue;
2785
2786                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
2787                                                 intval($datarray['uid']),
2788                                                 intval($datarray['contact-id']),
2789                                                 dbesc($datarray['verb']),
2790                                                 dbesc($parent_uri)
2791                                         );
2792                                         if($r && count($r))
2793                                                 continue;
2794                                 }
2795
2796                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2797                                         $xo = parse_xml_string($datarray['object'],false);
2798                                         $xt = parse_xml_string($datarray['target'],false);
2799
2800                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
2801                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
2802                                                         dbesc($xt->id),
2803                                                         intval($importer['importer_uid'])
2804                                                 );
2805                                                 if(! count($r))
2806                                                         continue;
2807
2808                                                 // extract tag, if not duplicate, add to parent item
2809                                                 if($xo->id && $xo->content) {
2810                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
2811                                                         if(! (stristr($r[0]['tag'],$newtag))) {
2812                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
2813                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . $newtag),
2814                                                                         intval($r[0]['id'])
2815                                                                 );
2816                                                                 create_tags_from_item($r[0]['id']);
2817                                                         }
2818                                                 }
2819                                         }
2820                                 }
2821
2822                                 $r = item_store($datarray,$force_parent);
2823                                 continue;
2824                         }
2825
2826                         else {
2827
2828                                 // Head post of a conversation. Have we seen it? If not, import it.
2829
2830                                 $item_id  = $item->get_id();
2831
2832                                 $datarray = get_atom_elements($feed, $item, $contact);
2833
2834                                 if(is_array($contact)) {
2835                                         if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2836                                                 $datarray['author-name'] = $contact['name'];
2837                                         if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2838                                                 $datarray['author-link'] = $contact['url'];
2839                                         if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2840                                                 $datarray['author-avatar'] = $contact['thumb'];
2841                                 }
2842
2843                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2844                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2845                                         continue;
2846                                 }
2847
2848                                 // special handling for events
2849
2850                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
2851                                         $ev = bbtoevent($datarray['body']);
2852                                         if(x($ev,'desc') && x($ev,'start')) {
2853                                                 $ev['uid'] = $importer['uid'];
2854                                                 $ev['uri'] = $item_id;
2855                                                 $ev['edited'] = $datarray['edited'];
2856                                                 $ev['private'] = $datarray['private'];
2857                                                 $ev['guid'] = $datarray['guid'];
2858
2859                                                 if(is_array($contact))
2860                                                         $ev['cid'] = $contact['id'];
2861                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2862                                                         dbesc($item_id),
2863                                                         intval($importer['uid'])
2864                                                 );
2865                                                 if(count($r))
2866                                                         $ev['id'] = $r[0]['id'];
2867                                                 $xyz = event_store($ev);
2868                                                 continue;
2869                                         }
2870                                 }
2871
2872                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2873                                         if(strlen($datarray['title']))
2874                                                 unset($datarray['title']);
2875                                         $datarray['last-child'] = 1;
2876                                 }
2877
2878
2879                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2880                                         dbesc($item_id),
2881                                         intval($importer['uid'])
2882                                 );
2883
2884                                 // Update content if 'updated' changes
2885
2886                                 if(count($r)) {
2887                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2888
2889                                                 // do not accept (ignore) an earlier edit than one we currently have.
2890                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2891                                                         continue;
2892
2893                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2894                                                         dbesc($datarray['title']),
2895                                                         dbesc($datarray['body']),
2896                                                         dbesc($datarray['tag']),
2897                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2898                                                         dbesc(datetime_convert()),
2899                                                         dbesc($item_id),
2900                                                         intval($importer['uid'])
2901                                                 );
2902                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2903                                                 update_thread_uri($item_id, $importer['uid']);
2904                                         }
2905
2906                                         // update last-child if it changes
2907
2908                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2909                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
2910                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2911                                                         intval($allow[0]['data']),
2912                                                         dbesc(datetime_convert()),
2913                                                         dbesc($item_id),
2914                                                         intval($importer['uid'])
2915                                                 );
2916                                                 update_thread_uri($item_id, $importer['uid']);
2917                                         }
2918                                         continue;
2919                                 }
2920
2921                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
2922                                         logger('consume-feed: New follower');
2923                                         new_follower($importer,$contact,$datarray,$item);
2924                                         return;
2925                                 }
2926                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
2927                                         lose_follower($importer,$contact,$datarray,$item);
2928                                         return;
2929                                 }
2930
2931                                 if(activity_match($datarray['verb'],ACTIVITY_REQ_FRIEND)) {
2932                                         logger('consume-feed: New friend request');
2933                                         new_follower($importer,$contact,$datarray,$item,true);
2934                                         return;
2935                                 }
2936                                 if(activity_match($datarray['verb'],ACTIVITY_UNFRIEND))  {
2937                                         lose_sharer($importer,$contact,$datarray,$item);
2938                                         return;
2939                                 }
2940
2941
2942                                 if(! is_array($contact))
2943                                         return;
2944
2945
2946                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2947                                                 // one way feed - no remote comment ability
2948                                                 $datarray['last-child'] = 0;
2949                                 }
2950                                 if($contact['network'] === NETWORK_FEED)
2951                                         $datarray['private'] = 2;
2952
2953                                 $datarray['parent-uri'] = $item_id;
2954                                 $datarray['uid'] = $importer['uid'];
2955                                 $datarray['contact-id'] = $contact['id'];
2956
2957                                 if(! link_compare($datarray['owner-link'],$contact['url'])) {
2958                                         // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
2959                                         // but otherwise there's a possible data mixup on the sender's system.
2960                                         // the tgroup delivery code called from item_store will correct it if it's a forum,
2961                                         // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
2962                                         logger('consume_feed: Correcting item owner.', LOGGER_DEBUG);
2963                                         $datarray['owner-name']   = $contact['name'];
2964                                         $datarray['owner-link']   = $contact['url'];
2965                                         $datarray['owner-avatar'] = $contact['thumb'];
2966                                 }
2967
2968                                 // We've allowed "followers" to reach this point so we can decide if they are
2969                                 // posting an @-tag delivery, which followers are allowed to do for certain
2970                                 // page types. Now that we've parsed the post, let's check if it is legit. Otherwise ignore it.
2971
2972                                 if(($contact['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['uid'],$datarray)))
2973                                         continue;
2974
2975                                 // This is my contact on another system, but it's really me.
2976                                 // Turn this into a wall post.
2977                                 $notify = item_is_remote_self($contact, $datarray);
2978
2979                                 $r = item_store($datarray, false, $notify);
2980                                 logger('Stored - Contact '.$contact['url'].' Notify '.$notify.' return '.$r.' Item '.print_r($datarray, true), LOGGER_DEBUG);
2981                                 continue;
2982
2983                         }
2984                 }
2985         }
2986 }
2987
2988 function item_is_remote_self($contact, &$datarray) {
2989         $a = get_app();
2990
2991         if (!$contact['remote_self'])
2992                 return false;
2993
2994         // Prevent the forwarding of posts that are forwarded
2995         if ($datarray["extid"] == NETWORK_DFRN)
2996                 return false;
2997
2998         // Prevent to forward already forwarded posts
2999         if ($datarray["app"] == $a->get_hostname())
3000                 return false;
3001
3002         // Only forward posts
3003         if ($datarray["verb"] != ACTIVITY_POST)
3004                 return false;
3005
3006         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
3007                 return false;
3008
3009         $datarray2 = $datarray;
3010         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
3011         if ($contact['remote_self'] == 2) {
3012                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
3013                         intval($contact['uid']));
3014                 if (count($r)) {
3015                         $datarray['contact-id'] = $r[0]["id"];
3016
3017                         $datarray['owner-name'] = $r[0]["name"];
3018                         $datarray['owner-link'] = $r[0]["url"];
3019                         $datarray['owner-avatar'] = $r[0]["thumb"];
3020
3021                         $datarray['author-name']   = $datarray['owner-name'];
3022                         $datarray['author-link']   = $datarray['owner-link'];
3023                         $datarray['author-avatar'] = $datarray['owner-avatar'];
3024                 }
3025
3026                 if ($contact['network'] != NETWORK_FEED) {
3027                         $datarray["guid"] = get_guid(32);
3028                         unset($datarray["plink"]);
3029                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
3030                         $datarray["parent-uri"] = $datarray["uri"];
3031                         $datarray["extid"] = $contact['network'];
3032                         $urlpart = parse_url($datarray2['author-link']);
3033                         $datarray["app"] = $urlpart["host"];
3034                 } else
3035                         $datarray['private'] = 0;
3036         }
3037
3038         if ($contact['network'] != NETWORK_FEED) {
3039                 // Store the original post
3040                 $r = item_store($datarray2, false, false);
3041                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
3042         } else
3043                 $datarray["app"] = "Feed";
3044
3045         return true;
3046 }
3047
3048 function local_delivery($importer,$data) {
3049         $a = get_app();
3050
3051         logger(__function__, LOGGER_TRACE);
3052
3053         if($importer['readonly']) {
3054                 // We aren't receiving stuff from this person. But we will quietly ignore them
3055                 // rather than a blatant "go away" message.
3056                 logger('local_delivery: ignoring');
3057                 return 0;
3058                 //NOTREACHED
3059         }
3060
3061         // Consume notification feed. This may differ from consuming a public feed in several ways
3062         // - might contain email or friend suggestions
3063         // - might contain remote followup to our message
3064         //              - in which case we need to accept it and then notify other conversants
3065         // - we may need to send various email notifications
3066
3067         $feed = new SimplePie();
3068         $feed->set_raw_data($data);
3069         $feed->enable_order_by_date(false);
3070         $feed->init();
3071
3072
3073         if($feed->error())
3074                 logger('local_delivery: Error parsing XML: ' . $feed->error());
3075
3076
3077         // Check at the feed level for updated contact name and/or photo
3078
3079         $name_updated  = '';
3080         $new_name = '';
3081         $photo_timestamp = '';
3082         $photo_url = '';
3083         $contact_updated = '';
3084
3085
3086         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
3087
3088 // Fallback should not be needed here. If it isn't DFRN it won't have DFRN updated tags
3089 //      if(! $rawtags)
3090 //              $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
3091
3092         if($rawtags) {
3093                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
3094                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
3095                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
3096                         $new_name = $elems['name'][0]['data'];
3097
3098                         // Manually checking for changed contact names
3099                         if (($new_name != $importer['name']) AND ($new_name != "") AND ($name_updated <= $importer['name-date'])) {
3100                                 $name_updated = date("c");
3101                                 $photo_timestamp = date("c");
3102                         }
3103                 }
3104                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
3105                         if ($photo_timestamp == "")
3106                                 $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
3107                         $photo_url = $elems['link'][0]['attribs']['']['href'];
3108                 }
3109         }
3110
3111         if(($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $importer['avatar-date'])) {
3112
3113                 $contact_updated = $photo_timestamp;
3114
3115                 logger('local_delivery: Updating photo for ' . $importer['name']);
3116                 require_once("include/Photo.php");
3117                 $photo_failure = false;
3118                 $have_photo = false;
3119
3120                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
3121                         intval($importer['id']),
3122                         intval($importer['importer_uid'])
3123                 );
3124                 if(count($r)) {
3125                         $resource_id = $r[0]['resource-id'];
3126                         $have_photo = true;
3127                 }
3128                 else {
3129                         $resource_id = photo_new_resource();
3130                 }
3131
3132                 $img_str = fetch_url($photo_url,true);
3133                 // guess mimetype from headers or filename
3134                 $type = guess_image_type($photo_url,true);
3135
3136
3137                 $img = new Photo($img_str, $type);
3138                 if($img->is_valid()) {
3139                         if($have_photo) {
3140                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
3141                                         dbesc($resource_id),
3142                                         intval($importer['id']),
3143                                         intval($importer['importer_uid'])
3144                                 );
3145                         }
3146
3147                         $img->scaleImageSquare(175);
3148
3149                         $hash = $resource_id;
3150                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 4);
3151
3152                         $img->scaleImage(80);
3153                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 5);
3154
3155                         $img->scaleImage(48);
3156                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 6);
3157
3158                         $a = get_app();
3159
3160                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
3161                                 WHERE `uid` = %d AND `id` = %d",
3162                                 dbesc(datetime_convert()),
3163                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.'.$img->getExt()),
3164                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.'.$img->getExt()),
3165                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.'.$img->getExt()),
3166                                 intval($importer['importer_uid']),
3167                                 intval($importer['id'])
3168                         );
3169                 }
3170         }
3171
3172         if(($name_updated) && (strlen($new_name)) && ($name_updated > $importer['name-date'])) {
3173                 if ($name_updated > $contact_updated)
3174                         $contact_updated = $name_updated;
3175
3176                 $r = q("select * from contact where uid = %d and id = %d limit 1",
3177                         intval($importer['importer_uid']),
3178                         intval($importer['id'])
3179                 );
3180
3181                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d",
3182                         dbesc(notags(trim($new_name))),
3183                         dbesc(datetime_convert()),
3184                         intval($importer['importer_uid']),
3185                         intval($importer['id'])
3186                 );
3187
3188                 // do our best to update the name on content items
3189
3190                 if(count($r)) {
3191                         q("update item set `author-name` = '%s' where `author-name` = '%s' and `author-link` = '%s' and uid = %d",
3192                                 dbesc(notags(trim($new_name))),
3193                                 dbesc($r[0]['name']),
3194                                 dbesc($r[0]['url']),
3195                                 intval($importer['importer_uid'])
3196                         );
3197                 }
3198         }
3199
3200         if ($contact_updated AND $new_name AND $photo_url)
3201                 poco_check($importer['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $importer['id'], $importer['importer_uid']);
3202
3203         // Currently unsupported - needs a lot of work
3204         $reloc = $feed->get_feed_tags( NAMESPACE_DFRN, 'relocate' );
3205         if(isset($reloc[0]['child'][NAMESPACE_DFRN])) {
3206                 $base = $reloc[0]['child'][NAMESPACE_DFRN];
3207                 $newloc = array();
3208                 $newloc['uid'] = $importer['importer_uid'];
3209                 $newloc['cid'] = $importer['id'];
3210                 $newloc['name'] = notags(unxmlify($base['name'][0]['data']));
3211                 $newloc['photo'] = notags(unxmlify($base['photo'][0]['data']));
3212                 $newloc['thumb'] = notags(unxmlify($base['thumb'][0]['data']));
3213                 $newloc['micro'] = notags(unxmlify($base['micro'][0]['data']));
3214                 $newloc['url'] = notags(unxmlify($base['url'][0]['data']));
3215                 $newloc['request'] = notags(unxmlify($base['request'][0]['data']));
3216                 $newloc['confirm'] = notags(unxmlify($base['confirm'][0]['data']));
3217                 $newloc['notify'] = notags(unxmlify($base['notify'][0]['data']));
3218                 $newloc['poll'] = notags(unxmlify($base['poll'][0]['data']));
3219                 $newloc['sitepubkey'] = notags(unxmlify($base['sitepubkey'][0]['data']));
3220                 /** relocated user must have original key pair */
3221                 /*$newloc['pubkey'] = notags(unxmlify($base['pubkey'][0]['data']));
3222                 $newloc['prvkey'] = notags(unxmlify($base['prvkey'][0]['data']));*/
3223
3224                 logger("items:relocate contact ".print_r($newloc, true).print_r($importer, true), LOGGER_DEBUG);
3225
3226                 // update contact
3227                 $r = q("SELECT photo, url FROM contact WHERE id=%d AND uid=%d;",
3228                         intval($importer['id']),
3229                         intval($importer['importer_uid']));
3230                 if ($r === false)
3231                         return 1;
3232                 $old = $r[0];
3233
3234                 $x = q("UPDATE contact SET
3235                                         name = '%s',
3236                                         photo = '%s',
3237                                         thumb = '%s',
3238                                         micro = '%s',
3239                                         url = '%s',
3240                                         nurl = '%s',
3241                                         request = '%s',
3242                                         confirm = '%s',
3243                                         notify = '%s',
3244                                         poll = '%s',
3245                                         `site-pubkey` = '%s'
3246                         WHERE id=%d AND uid=%d;",
3247                                         dbesc($newloc['name']),
3248                                         dbesc($newloc['photo']),
3249                                         dbesc($newloc['thumb']),
3250                                         dbesc($newloc['micro']),
3251                                         dbesc($newloc['url']),
3252                                         dbesc(normalise_link($newloc['url'])),
3253                                         dbesc($newloc['request']),
3254                                         dbesc($newloc['confirm']),
3255                                         dbesc($newloc['notify']),
3256                                         dbesc($newloc['poll']),
3257                                         dbesc($newloc['sitepubkey']),
3258                                         intval($importer['id']),
3259                                         intval($importer['importer_uid']));
3260
3261                 if ($x === false)
3262                         return 1;
3263                 // update items
3264                 $fields = array(
3265                         'owner-link' => array($old['url'], $newloc['url']),
3266                         'author-link' => array($old['url'], $newloc['url']),
3267                         'owner-avatar' => array($old['photo'], $newloc['photo']),
3268                         'author-avatar' => array($old['photo'], $newloc['photo']),
3269                         );
3270                 foreach ($fields as $n=>$f){
3271                         $x = q("UPDATE `item` SET `%s`='%s' WHERE `%s`='%s' AND uid=%d",
3272                                         $n, dbesc($f[1]),
3273                                         $n, dbesc($f[0]),
3274                                         intval($importer['importer_uid']));
3275                                 if ($x === false)
3276                                         return 1;
3277                         }
3278
3279                 // TODO
3280                 // merge with current record, current contents have priority
3281                 // update record, set url-updated
3282                 // update profile photos
3283                 // schedule a scan?
3284                 return 0;
3285         }
3286
3287
3288         // handle friend suggestion notification
3289
3290         $sugg = $feed->get_feed_tags( NAMESPACE_DFRN, 'suggest' );
3291         if(isset($sugg[0]['child'][NAMESPACE_DFRN])) {
3292                 $base = $sugg[0]['child'][NAMESPACE_DFRN];
3293                 $fsugg = array();
3294                 $fsugg['uid'] = $importer['importer_uid'];
3295                 $fsugg['cid'] = $importer['id'];
3296                 $fsugg['name'] = notags(unxmlify($base['name'][0]['data']));
3297                 $fsugg['photo'] = notags(unxmlify($base['photo'][0]['data']));
3298                 $fsugg['url'] = notags(unxmlify($base['url'][0]['data']));
3299                 $fsugg['request'] = notags(unxmlify($base['request'][0]['data']));
3300                 $fsugg['body'] = escape_tags(unxmlify($base['note'][0]['data']));
3301
3302                 // Does our member already have a friend matching this description?
3303
3304                 $r = q("SELECT * FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
3305                         dbesc($fsugg['name']),
3306                         dbesc(normalise_link($fsugg['url'])),
3307                         intval($fsugg['uid'])
3308                 );
3309                 if(count($r))
3310                         return 0;
3311
3312                 // Do we already have an fcontact record for this person?
3313
3314                 $fid = 0;
3315                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3316                         dbesc($fsugg['url']),
3317                         dbesc($fsugg['name']),
3318                         dbesc($fsugg['request'])
3319                 );
3320                 if(count($r)) {
3321                         $fid = $r[0]['id'];
3322
3323                         // OK, we do. Do we already have an introduction for this person ?
3324                         $r = q("select id from intro where uid = %d and fid = %d limit 1",
3325                                 intval($fsugg['uid']),
3326                                 intval($fid)
3327                         );
3328                         if(count($r))
3329                                 return 0;
3330                 }
3331                 if(! $fid)
3332                         $r = q("INSERT INTO `fcontact` ( `name`,`url`,`photo`,`request` ) VALUES ( '%s', '%s', '%s', '%s' ) ",
3333                         dbesc($fsugg['name']),
3334                         dbesc($fsugg['url']),
3335                         dbesc($fsugg['photo']),
3336                         dbesc($fsugg['request'])
3337                 );
3338                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3339                         dbesc($fsugg['url']),
3340                         dbesc($fsugg['name']),
3341                         dbesc($fsugg['request'])
3342                 );
3343                 if(count($r)) {
3344                         $fid = $r[0]['id'];
3345                 }
3346                 // database record did not get created. Quietly give up.
3347                 else
3348                         return 0;
3349
3350
3351                 $hash = random_string();
3352
3353                 $r = q("INSERT INTO `intro` ( `uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked` )
3354                         VALUES( %d, %d, %d, '%s', '%s', '%s', %d )",
3355                         intval($fsugg['uid']),
3356                         intval($fid),
3357                         intval($fsugg['cid']),
3358                         dbesc($fsugg['body']),
3359                         dbesc($hash),
3360                         dbesc(datetime_convert()),
3361                         intval(0)
3362                 );
3363
3364                 notification(array(
3365                         'type'         => NOTIFY_SUGGEST,
3366                         'notify_flags' => $importer['notify-flags'],
3367                         'language'     => $importer['language'],
3368                         'to_name'      => $importer['username'],
3369                         'to_email'     => $importer['email'],
3370                         'uid'          => $importer['importer_uid'],
3371                         'item'         => $fsugg,
3372                         'link'         => $a->get_baseurl() . '/notifications/intros',
3373                         'source_name'  => $importer['name'],
3374                         'source_link'  => $importer['url'],
3375                         'source_photo' => $importer['photo'],
3376                         'verb'         => ACTIVITY_REQ_FRIEND,
3377                         'otype'        => 'intro'
3378                 ));
3379
3380                 return 0;
3381         }
3382
3383         $ismail = false;
3384
3385         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
3386         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
3387
3388                 logger('local_delivery: private message received');
3389
3390                 $ismail = true;
3391                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
3392
3393                 $msg = array();
3394                 $msg['uid'] = $importer['importer_uid'];
3395                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
3396                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
3397                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
3398                 $msg['contact-id'] = $importer['id'];
3399                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
3400                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
3401                 $msg['seen'] = 0;
3402                 $msg['replied'] = 0;
3403                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
3404                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
3405                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
3406
3407                 dbesc_array($msg);
3408
3409                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
3410                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
3411
3412                 // send notifications.
3413
3414                 require_once('include/enotify.php');
3415
3416                 $notif_params = array(
3417                         'type' => NOTIFY_MAIL,
3418                         'notify_flags' => $importer['notify-flags'],
3419                         'language' => $importer['language'],
3420                         'to_name' => $importer['username'],
3421                         'to_email' => $importer['email'],
3422                         'uid' => $importer['importer_uid'],
3423                         'item' => $msg,
3424                         'source_name' => $msg['from-name'],
3425                         'source_link' => $importer['url'],
3426                         'source_photo' => $importer['thumb'],
3427                         'verb' => ACTIVITY_POST,
3428                         'otype' => 'mail'
3429                 );
3430
3431                 notification($notif_params);
3432                 return 0;
3433
3434                 // NOTREACHED
3435         }
3436
3437         $community_page = 0;
3438         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
3439         if($rawtags) {
3440                 $community_page = intval($rawtags[0]['data']);
3441         }
3442         if(intval($importer['forum']) != $community_page) {
3443                 q("update contact set forum = %d where id = %d",
3444                         intval($community_page),
3445                         intval($importer['id'])
3446                 );
3447                 $importer['forum'] = (string) $community_page;
3448         }
3449
3450         logger('local_delivery: feed item count = ' . $feed->get_item_quantity());
3451
3452         // process any deleted entries
3453
3454         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
3455         if(is_array($del_entries) && count($del_entries)) {
3456                 foreach($del_entries as $dentry) {
3457                         $deleted = false;
3458                         if(isset($dentry['attribs']['']['ref'])) {
3459                                 $uri = $dentry['attribs']['']['ref'];
3460                                 $deleted = true;
3461                                 if(isset($dentry['attribs']['']['when'])) {
3462                                         $when = $dentry['attribs']['']['when'];
3463                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
3464                                 }
3465                                 else
3466                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
3467                         }
3468                         if($deleted) {
3469
3470                                 // check for relayed deletes to our conversation
3471
3472                                 $is_reply = false;
3473                                 $r = q("select * from item where uri = '%s' and uid = %d limit 1",
3474                                         dbesc($uri),
3475                                         intval($importer['importer_uid'])
3476                                 );
3477                                 if(count($r)) {
3478                                         $parent_uri = $r[0]['parent-uri'];
3479                                         if($r[0]['id'] != $r[0]['parent'])
3480                                                 $is_reply = true;
3481                                 }
3482
3483                                 if($is_reply) {
3484                                         $community = false;
3485
3486                                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3487                                                 $sql_extra = '';
3488                                                 $community = true;
3489                                                 logger('local_delivery: possible community delete');
3490                                         }
3491                                         else
3492                                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3493
3494                                         // was the top-level post for this reply written by somebody on this site?
3495                                         // Specifically, the recipient?
3496
3497                                         $is_a_remote_delete = false;
3498
3499                                         // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3500                                         $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3501                                                 `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3502                                                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3503                                                 WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3504                                                 AND `item`.`uid` = %d
3505                                                 $sql_extra
3506                                                 LIMIT 1",
3507                                                 dbesc($parent_uri),
3508                                                 dbesc($parent_uri),
3509                                                 dbesc($parent_uri),
3510                                                 intval($importer['importer_uid'])
3511                                         );
3512                                         if($r && count($r))
3513                                                 $is_a_remote_delete = true;
3514
3515                                         // Does this have the characteristics of a community or private group comment?
3516                                         // If it's a reply to a wall post on a community/prvgroup page it's a
3517                                         // valid community comment. Also forum_mode makes it valid for sure.
3518                                         // If neither, it's not.
3519
3520                                         if($is_a_remote_delete && $community) {
3521                                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3522                                                         $is_a_remote_delete = false;
3523                                                         logger('local_delivery: not a community delete');
3524                                                 }
3525                                         }
3526
3527                                         if($is_a_remote_delete) {
3528                                                 logger('local_delivery: received remote delete');
3529                                         }
3530                                 }
3531
3532                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN contact on `item`.`contact-id` = `contact`.`id`
3533                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
3534                                         dbesc($uri),
3535                                         intval($importer['importer_uid']),
3536                                         intval($importer['id'])
3537                                 );
3538
3539                                 if(count($r)) {
3540                                         $item = $r[0];
3541
3542                                         if($item['deleted'])
3543                                                 continue;
3544
3545                                         logger('local_delivery: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
3546
3547                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3548                                                 $xo = parse_xml_string($item['object'],false);
3549                                                 $xt = parse_xml_string($item['target'],false);
3550
3551                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
3552                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
3553                                                                 dbesc($xt->id),
3554                                                                 intval($importer['importer_uid'])
3555                                                         );
3556                                                         if(count($i)) {
3557
3558                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
3559
3560                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
3561                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
3562                                                                 $author_copy = (($item['origin']) ? true : false);
3563
3564                                                                 if($owner_remove && $author_copy)
3565                                                                         continue;
3566                                                                 if($author_remove || $owner_remove) {
3567                                                                         $tags = explode(',',$i[0]['tag']);
3568                                                                         $newtags = array();
3569                                                                         if(count($tags)) {
3570                                                                                 foreach($tags as $tag)
3571                                                                                         if(trim($tag) !== trim($xo->body))
3572                                                                                                 $newtags[] = trim($tag);
3573                                                                         }
3574                                                                         q("update item set tag = '%s' where id = %d",
3575                                                                                 dbesc(implode(',',$newtags)),
3576                                                                                 intval($i[0]['id'])
3577                                                                         );
3578                                                                         create_tags_from_item($i[0]['id']);
3579                                                                 }
3580                                                         }
3581                                                 }
3582                                         }
3583
3584                                         if($item['uri'] == $item['parent-uri']) {
3585                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3586                                                         `body` = '', `title` = ''
3587                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
3588                                                         dbesc($when),
3589                                                         dbesc(datetime_convert()),
3590                                                         dbesc($item['uri']),
3591                                                         intval($importer['importer_uid'])
3592                                                 );
3593                                                 create_tags_from_itemuri($item['uri'], $importer['importer_uid']);
3594                                                 create_files_from_itemuri($item['uri'], $importer['importer_uid']);
3595                                                 update_thread_uri($item['uri'], $importer['importer_uid']);
3596                                         }
3597                                         else {
3598                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3599                                                         `body` = '', `title` = ''
3600                                                         WHERE `uri` = '%s' AND `uid` = %d",
3601                                                         dbesc($when),
3602                                                         dbesc(datetime_convert()),
3603                                                         dbesc($uri),
3604                                                         intval($importer['importer_uid'])
3605                                                 );
3606                                                 create_tags_from_itemuri($uri, $importer['importer_uid']);
3607                                                 create_files_from_itemuri($uri, $importer['importer_uid']);
3608                                                 update_thread_uri($uri, $importer['importer_uid']);
3609                                                 if($item['last-child']) {
3610                                                         // ensure that last-child is set in case the comment that had it just got wiped.
3611                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
3612                                                                 dbesc(datetime_convert()),
3613                                                                 dbesc($item['parent-uri']),
3614                                                                 intval($item['uid'])
3615                                                         );
3616                                                         // who is the last child now?
3617                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
3618                                                                 ORDER BY `created` DESC LIMIT 1",
3619                                                                         dbesc($item['parent-uri']),
3620                                                                         intval($importer['importer_uid'])
3621                                                         );
3622                                                         if(count($r)) {
3623                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
3624                                                                         intval($r[0]['id'])
3625                                                                 );
3626                                                         }
3627                                                 }
3628                                                 // if this is a relayed delete, propagate it to other recipients
3629
3630                                                 if($is_a_remote_delete)
3631                                                         proc_run('php',"include/notifier.php","drop",$item['id']);
3632                                         }
3633                                 }
3634                         }
3635                 }
3636         }
3637
3638
3639         foreach($feed->get_items() as $item) {
3640
3641                 $is_reply = false;
3642                 $item_id = $item->get_id();
3643                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
3644                 if(isset($rawthread[0]['attribs']['']['ref'])) {
3645                         $is_reply = true;
3646                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
3647                 }
3648
3649                 if($is_reply) {
3650                         $community = false;
3651
3652                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3653                                 $sql_extra = '';
3654                                 $community = true;
3655                                 logger('local_delivery: possible community reply');
3656                         }
3657                         else
3658                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3659
3660                         // was the top-level post for this reply written by somebody on this site?
3661                         // Specifically, the recipient?
3662
3663                         $is_a_remote_comment = false;
3664                         $top_uri = $parent_uri;
3665
3666                         $r = q("select `item`.`parent-uri` from `item`
3667                                 WHERE `item`.`uri` = '%s'
3668                                 LIMIT 1",
3669                                 dbesc($parent_uri)
3670                         );
3671                         if($r && count($r)) {
3672                                 $top_uri = $r[0]['parent-uri'];
3673
3674                                 // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3675                                 $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3676                                         `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3677                                         INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3678                                         WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3679                                         AND `item`.`uid` = %d
3680                                         $sql_extra
3681                                         LIMIT 1",
3682                                         dbesc($top_uri),
3683                                         dbesc($top_uri),
3684                                         dbesc($top_uri),
3685                                         intval($importer['importer_uid'])
3686                                 );
3687                                 if($r && count($r))
3688                                         $is_a_remote_comment = true;
3689                         }
3690
3691                         // Does this have the characteristics of a community or private group comment?
3692                         // If it's a reply to a wall post on a community/prvgroup page it's a
3693                         // valid community comment. Also forum_mode makes it valid for sure.
3694                         // If neither, it's not.
3695
3696                         if($is_a_remote_comment && $community) {
3697                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3698                                         $is_a_remote_comment = false;
3699                                         logger('local_delivery: not a community reply');
3700                                 }
3701                         }
3702
3703                         if($is_a_remote_comment) {
3704                                 logger('local_delivery: received remote comment');
3705                                 $is_like = false;
3706                                 // remote reply to our post. Import and then notify everybody else.
3707
3708                                 $datarray = get_atom_elements($feed, $item);
3709
3710                                 $r = q("SELECT `id`, `uid`, `last-child`, `edited`, `body`  FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3711                                         dbesc($item_id),
3712                                         intval($importer['importer_uid'])
3713                                 );
3714
3715                                 // Update content if 'updated' changes
3716
3717                                 if(count($r)) {
3718                                         $iid = $r[0]['id'];
3719                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3720
3721                                                 // do not accept (ignore) an earlier edit than one we currently have.
3722                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3723                                                         continue;
3724
3725                                                 logger('received updated comment' , LOGGER_DEBUG);
3726                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3727                                                         dbesc($datarray['title']),
3728                                                         dbesc($datarray['body']),
3729                                                         dbesc($datarray['tag']),
3730                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3731                                                         dbesc(datetime_convert()),
3732                                                         dbesc($item_id),
3733                                                         intval($importer['importer_uid'])
3734                                                 );
3735                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3736
3737                                                 proc_run('php',"include/notifier.php","comment-import",$iid);
3738
3739                                         }
3740
3741                                         continue;
3742                                 }
3743
3744
3745
3746                                 $own = q("select name,url,thumb from contact where uid = %d and self = 1 limit 1",
3747                                         intval($importer['importer_uid'])
3748                                 );
3749
3750
3751                                 $datarray['type'] = 'remote-comment';
3752                                 $datarray['wall'] = 1;
3753                                 $datarray['parent-uri'] = $parent_uri;
3754                                 $datarray['uid'] = $importer['importer_uid'];
3755                                 $datarray['owner-name'] = $own[0]['name'];
3756                                 $datarray['owner-link'] = $own[0]['url'];
3757                                 $datarray['owner-avatar'] = $own[0]['thumb'];
3758                                 $datarray['contact-id'] = $importer['id'];
3759
3760                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3761                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3762                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3763                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3764                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3765                                         $is_like = true;
3766                                         $datarray['type'] = 'activity';
3767                                         $datarray['gravity'] = GRAVITY_LIKE;
3768                                         $datarray['last-child'] = 0;
3769                                         // only one like or dislike per person
3770                                         // splitted into two queries for performance issues
3771                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`parent-uri` = '%s') and deleted = 0 limit 1",
3772                                                 intval($datarray['uid']),
3773                                                 intval($datarray['contact-id']),
3774                                                 dbesc($datarray['verb']),
3775                                                 dbesc($datarray['parent-uri'])
3776
3777                                         );
3778                                         if($r && count($r))
3779                                                 continue;
3780
3781                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`thr-parent` = '%s') and deleted = 0 limit 1",
3782                                                 intval($datarray['uid']),
3783                                                 intval($datarray['contact-id']),
3784                                                 dbesc($datarray['verb']),
3785                                                 dbesc($datarray['parent-uri'])
3786
3787                                         );
3788                                         if($r && count($r))
3789                                                 continue;
3790                                 }
3791
3792                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3793
3794                                         $xo = parse_xml_string($datarray['object'],false);
3795                                         $xt = parse_xml_string($datarray['target'],false);
3796
3797                                         if(($xt->type == ACTIVITY_OBJ_NOTE) && ($xt->id)) {
3798
3799                                                 // fetch the parent item
3800
3801                                                 $tagp = q("select * from item where uri = '%s' and uid = %d limit 1",
3802                                                         dbesc($xt->id),
3803                                                         intval($importer['importer_uid'])
3804                                                 );
3805                                                 if(! count($tagp))
3806                                                         continue;
3807
3808                                                 // extract tag, if not duplicate, and this user allows tags, add to parent item
3809
3810                                                 if($xo->id && $xo->content) {
3811                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
3812                                                         if(! (stristr($tagp[0]['tag'],$newtag))) {
3813                                                                 $i = q("SELECT `blocktags` FROM `user` where `uid` = %d LIMIT 1",
3814                                                                         intval($importer['importer_uid'])
3815                                                                 );
3816                                                                 if(count($i) && ! intval($i[0]['blocktags'])) {
3817                                                                         q("UPDATE item SET tag = '%s', `edited` = '%s', `changed` = '%s' WHERE id = %d",
3818                                                                                 dbesc($tagp[0]['tag'] . (strlen($tagp[0]['tag']) ? ',' : '') . $newtag),
3819                                                                                 intval($tagp[0]['id']),
3820                                                                                 dbesc(datetime_convert()),
3821                                                                                 dbesc(datetime_convert())
3822                                                                         );
3823                                                                         create_tags_from_item($tagp[0]['id']);
3824                                                                 }
3825                                                         }
3826                                                 }
3827                                         }
3828                                 }
3829
3830
3831                                 $posted_id = item_store($datarray);
3832                                 $parent = 0;
3833
3834                                 if($posted_id) {
3835
3836                                         $datarray["id"] = $posted_id;
3837
3838                                         $r = q("SELECT `parent`, `parent-uri` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3839                                                 intval($posted_id),
3840                                                 intval($importer['importer_uid'])
3841                                         );
3842                                         if(count($r)) {
3843                                                 $parent = $r[0]['parent'];
3844                                                 $parent_uri = $r[0]['parent-uri'];
3845                                         }
3846
3847                                         if(! $is_like) {
3848                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
3849                                                         dbesc(datetime_convert()),
3850                                                         intval($importer['importer_uid']),
3851                                                         intval($r[0]['parent'])
3852                                                 );
3853
3854                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d",
3855                                                         dbesc(datetime_convert()),
3856                                                         intval($importer['importer_uid']),
3857                                                         intval($posted_id)
3858                                                 );
3859                                         }
3860
3861                                         if($posted_id && $parent) {
3862
3863                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
3864
3865                                                 if((! $is_like) && (! $importer['self'])) {
3866
3867                                                         require_once('include/enotify.php');
3868
3869                                                         notification(array(
3870                                                                 'type'         => NOTIFY_COMMENT,
3871                                                                 'notify_flags' => $importer['notify-flags'],
3872                                                                 'language'     => $importer['language'],
3873                                                                 'to_name'      => $importer['username'],
3874                                                                 'to_email'     => $importer['email'],
3875                                                                 'uid'          => $importer['importer_uid'],
3876                                                                 'item'         => $datarray,
3877                                                                 'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
3878                                                                 'source_name'  => stripslashes($datarray['author-name']),
3879                                                                 'source_link'  => $datarray['author-link'],
3880                                                                 'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
3881                                                                         ? $importer['thumb'] : $datarray['author-avatar']),
3882                                                                 'verb'         => ACTIVITY_POST,
3883                                                                 'otype'        => 'item',
3884                                                                 'parent'       => $parent,
3885                                                                 'parent_uri'   => $parent_uri,
3886                                                         ));
3887
3888                                                 }
3889                                         }
3890
3891                                         return 0;
3892                                         // NOTREACHED
3893                                 }
3894                         }
3895                         else {
3896
3897                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
3898
3899                                 $item_id  = $item->get_id();
3900                                 $datarray = get_atom_elements($feed,$item);
3901
3902                                 if($importer['rel'] == CONTACT_IS_FOLLOWER)
3903                                         continue;
3904
3905                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3906                                         dbesc($item_id),
3907                                         intval($importer['importer_uid'])
3908                                 );
3909
3910                                 // Update content if 'updated' changes
3911
3912                                 if(count($r)) {
3913                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3914
3915                                                 // do not accept (ignore) an earlier edit than one we currently have.
3916                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3917                                                         continue;
3918
3919                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3920                                                         dbesc($datarray['title']),
3921                                                         dbesc($datarray['body']),
3922                                                         dbesc($datarray['tag']),
3923                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3924                                                         dbesc(datetime_convert()),
3925                                                         dbesc($item_id),
3926                                                         intval($importer['importer_uid'])
3927                                                 );
3928                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3929                                         }
3930
3931                                         // update last-child if it changes
3932
3933                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
3934                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
3935                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
3936                                                         dbesc(datetime_convert()),
3937                                                         dbesc($parent_uri),
3938                                                         intval($importer['importer_uid'])
3939                                                 );
3940                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
3941                                                         intval($allow[0]['data']),
3942                                                         dbesc(datetime_convert()),
3943                                                         dbesc($item_id),
3944                                                         intval($importer['importer_uid'])
3945                                                 );
3946                                         }
3947                                         continue;
3948                                 }
3949
3950                                 $datarray['parent-uri'] = $parent_uri;
3951                                 $datarray['uid'] = $importer['importer_uid'];
3952                                 $datarray['contact-id'] = $importer['id'];
3953                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3954                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3955                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3956                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3957                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3958                                         $datarray['type'] = 'activity';
3959                                         $datarray['gravity'] = GRAVITY_LIKE;
3960                                         // only one like or dislike per person
3961                                         // splitted into two queries for performance issues
3962                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
3963                                                 intval($datarray['uid']),
3964                                                 intval($datarray['contact-id']),
3965                                                 dbesc($datarray['verb']),
3966                                                 dbesc($parent_uri)
3967                                         );
3968                                         if($r && count($r))
3969                                                 continue;
3970
3971                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
3972                                                 intval($datarray['uid']),
3973                                                 intval($datarray['contact-id']),
3974                                                 dbesc($datarray['verb']),
3975                                                 dbesc($parent_uri)
3976                                         );
3977                                         if($r && count($r))
3978                                                 continue;
3979
3980                                 }
3981
3982                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3983
3984                                         $xo = parse_xml_string($datarray['object'],false);
3985                                         $xt = parse_xml_string($datarray['target'],false);
3986
3987                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
3988                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
3989                                                         dbesc($xt->id),
3990                                                         intval($importer['importer_uid'])
3991                                                 );
3992                                                 if(! count($r))
3993                                                         continue;
3994
3995                                                 // extract tag, if not duplicate, add to parent item
3996                                                 if($xo->content) {
3997                                                         if(! (stristr($r[0]['tag'],trim($xo->content)))) {
3998                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
3999                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
4000                                                                         intval($r[0]['id'])
4001                                                                 );
4002                                                                 create_tags_from_item($r[0]['id']);
4003                                                         }
4004                                                 }
4005                                         }
4006                                 }
4007
4008                                 $posted_id = item_store($datarray);
4009
4010                                 // find out if our user is involved in this conversation and wants to be notified.
4011
4012                                 if(!x($datarray['type']) || $datarray['type'] != 'activity') {
4013
4014                                         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0",
4015                                                 dbesc($top_uri),
4016                                                 intval($importer['importer_uid'])
4017                                         );
4018
4019                                         if(count($myconv)) {
4020                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
4021
4022                                                 // first make sure this isn't our own post coming back to us from a wall-to-wall event
4023                                                 if(! link_compare($datarray['author-link'],$importer_url)) {
4024
4025
4026                                                         foreach($myconv as $conv) {
4027
4028                                                                 // now if we find a match, it means we're in this conversation
4029
4030                                                                 if(! link_compare($conv['author-link'],$importer_url))
4031                                                                         continue;
4032
4033                                                                 require_once('include/enotify.php');
4034
4035                                                                 $conv_parent = $conv['parent'];
4036
4037                                                                 notification(array(
4038                                                                         'type'         => NOTIFY_COMMENT,
4039                                                                         'notify_flags' => $importer['notify-flags'],
4040                                                                         'language'     => $importer['language'],
4041                                                                         'to_name'      => $importer['username'],
4042                                                                         'to_email'     => $importer['email'],
4043                                                                         'uid'          => $importer['importer_uid'],
4044                                                                         'item'         => $datarray,
4045                                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4046                                                                         'source_name'  => stripslashes($datarray['author-name']),
4047                                                                         'source_link'  => $datarray['author-link'],
4048                                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4049                                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4050                                                                         'verb'         => ACTIVITY_POST,
4051                                                                         'otype'        => 'item',
4052                                                                         'parent'       => $conv_parent,
4053                                                                         'parent_uri'   => $parent_uri
4054
4055                                                                 ));
4056
4057                                                                 // only send one notification
4058                                                                 break;
4059                                                         }
4060                                                 }
4061                                         }
4062                                 }
4063                                 continue;
4064                         }
4065                 }
4066
4067                 else {
4068
4069                         // Head post of a conversation. Have we seen it? If not, import it.
4070
4071
4072                         $item_id  = $item->get_id();
4073                         $datarray = get_atom_elements($feed,$item);
4074
4075                         if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
4076                                 $ev = bbtoevent($datarray['body']);
4077                                 if(x($ev,'desc') && x($ev,'start')) {
4078                                         $ev['cid'] = $importer['id'];
4079                                         $ev['uid'] = $importer['uid'];
4080                                         $ev['uri'] = $item_id;
4081                                         $ev['edited'] = $datarray['edited'];
4082                                         $ev['private'] = $datarray['private'];
4083                                         $ev['guid'] = $datarray['guid'];
4084
4085                                         $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4086                                                 dbesc($item_id),
4087                                                 intval($importer['uid'])
4088                                         );
4089                                         if(count($r))
4090                                                 $ev['id'] = $r[0]['id'];
4091                                         $xyz = event_store($ev);
4092                                         continue;
4093                                 }
4094                         }
4095
4096                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4097                                 dbesc($item_id),
4098                                 intval($importer['importer_uid'])
4099                         );
4100
4101                         // Update content if 'updated' changes
4102
4103                         if(count($r)) {
4104                                 if (edited_timestamp_is_newer($r[0], $datarray)) {
4105
4106                                         // do not accept (ignore) an earlier edit than one we currently have.
4107                                         if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
4108                                                 continue;
4109
4110                                         $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4111                                                 dbesc($datarray['title']),
4112                                                 dbesc($datarray['body']),
4113                                                 dbesc($datarray['tag']),
4114                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
4115                                                 dbesc(datetime_convert()),
4116                                                 dbesc($item_id),
4117                                                 intval($importer['importer_uid'])
4118                                         );
4119                                         create_tags_from_itemuri($item_id, $importer['importer_uid']);
4120                                         update_thread_uri($item_id, $importer['importer_uid']);
4121                                 }
4122
4123                                 // update last-child if it changes
4124
4125                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
4126                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
4127                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4128                                                 intval($allow[0]['data']),
4129                                                 dbesc(datetime_convert()),
4130                                                 dbesc($item_id),
4131                                                 intval($importer['importer_uid'])
4132                                         );
4133                                 }
4134                                 continue;
4135                         }
4136
4137                         $datarray['parent-uri'] = $item_id;
4138                         $datarray['uid'] = $importer['importer_uid'];
4139                         $datarray['contact-id'] = $importer['id'];
4140
4141
4142                         if(! link_compare($datarray['owner-link'],$importer['url'])) {
4143                                 // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
4144                                 // but otherwise there's a possible data mixup on the sender's system.
4145                                 // the tgroup delivery code called from item_store will correct it if it's a forum,
4146                                 // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
4147                                 logger('local_delivery: Correcting item owner.', LOGGER_DEBUG);
4148                                 $datarray['owner-name']   = $importer['senderName'];
4149                                 $datarray['owner-link']   = $importer['url'];
4150                                 $datarray['owner-avatar'] = $importer['thumb'];
4151                         }
4152
4153                         if(($importer['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['importer_uid'],$datarray)))
4154                                 continue;
4155
4156                         // This is my contact on another system, but it's really me.
4157                         // Turn this into a wall post.
4158                         $notify = item_is_remote_self($importer, $datarray);
4159
4160                         $posted_id = item_store($datarray, false, $notify);
4161
4162                         if(stristr($datarray['verb'],ACTIVITY_POKE)) {
4163                                 $verb = urldecode(substr($datarray['verb'],strpos($datarray['verb'],'#')+1));
4164                                 if(! $verb)
4165                                         continue;
4166                                 $xo = parse_xml_string($datarray['object'],false);
4167
4168                                 if(($xo->type == ACTIVITY_OBJ_PERSON) && ($xo->id)) {
4169
4170                                         // somebody was poked/prodded. Was it me?
4171
4172                                         $links = parse_xml_string("<links>".unxmlify($xo->link)."</links>",false);
4173
4174                                 foreach($links->link as $l) {
4175                                 $atts = $l->attributes();
4176                                 switch($atts['rel']) {
4177                                         case "alternate":
4178                                                                 $Blink = $atts['href'];
4179                                                                 break;
4180                                                         default:
4181                                                                 break;
4182                                     }
4183                                 }
4184                                         if($Blink && link_compare($Blink,$a->get_baseurl() . '/profile/' . $importer['nickname'])) {
4185
4186                                                 // send a notification
4187                                                 require_once('include/enotify.php');
4188
4189                                                 notification(array(
4190                                                         'type'         => NOTIFY_POKE,
4191                                                         'notify_flags' => $importer['notify-flags'],
4192                                                         'language'     => $importer['language'],
4193                                                         'to_name'      => $importer['username'],
4194                                                         'to_email'     => $importer['email'],
4195                                                         'uid'          => $importer['importer_uid'],
4196                                                         'item'         => $datarray,
4197                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4198                                                         'source_name'  => stripslashes($datarray['author-name']),
4199                                                         'source_link'  => $datarray['author-link'],
4200                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4201                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4202                                                         'verb'         => $datarray['verb'],
4203                                                         'otype'        => 'person',
4204                                                         'activity'     => $verb,
4205                                                         'parent'       => $datarray['parent']
4206                                                 ));
4207                                         }
4208                                 }
4209                         }
4210
4211                         continue;
4212                 }
4213         }
4214
4215         return 0;
4216         // NOTREACHED
4217
4218 }
4219
4220
4221 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
4222         $url = notags(trim($datarray['author-link']));
4223         $name = notags(trim($datarray['author-name']));
4224         $photo = notags(trim($datarray['author-avatar']));
4225
4226         if (is_object($item)) {
4227                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
4228                 if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
4229                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
4230         } else
4231                 $nick = $item;
4232
4233         if(is_array($contact)) {
4234                 if(($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
4235                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
4236                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
4237                                 intval(CONTACT_IS_FRIEND),
4238                                 intval($contact['id']),
4239                                 intval($importer['uid'])
4240                         );
4241                 }
4242                 // send email notification to owner?
4243         }
4244         else {
4245
4246                 // create contact record
4247
4248                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
4249                         `blocked`, `readonly`, `pending`, `writable` )
4250                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
4251                         intval($importer['uid']),
4252                         dbesc(datetime_convert()),
4253                         dbesc($url),
4254                         dbesc(normalise_link($url)),
4255                         dbesc($name),
4256                         dbesc($nick),
4257                         dbesc($photo),
4258                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
4259                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
4260                 );
4261                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
4262                                 intval($importer['uid']),
4263                                 dbesc($url)
4264                 );
4265                 if(count($r))
4266                                 $contact_record = $r[0];
4267
4268                 // create notification
4269                 $hash = random_string();
4270
4271                 if(is_array($contact_record)) {
4272                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
4273                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
4274                                 intval($importer['uid']),
4275                                 intval($contact_record['id']),
4276                                 dbesc($hash),
4277                                 dbesc(datetime_convert())
4278                         );
4279                 }
4280
4281                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
4282                         intval($importer['uid'])
4283                 );
4284                 $a = get_app();
4285                 if(count($r)) {
4286
4287                         if(intval($r[0]['def_gid'])) {
4288                                 require_once('include/group.php');
4289                                 group_add_member($r[0]['uid'],'',$contact_record['id'],$r[0]['def_gid']);
4290                         }
4291
4292                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) &&
4293                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE))) {
4294
4295                                 notification(array(
4296                                         'type'         => NOTIFY_INTRO,
4297                                         'notify_flags' => $r[0]['notify-flags'],
4298                                         'language'     => $r[0]['language'],
4299                                         'to_name'      => $r[0]['username'],
4300                                         'to_email'     => $r[0]['email'],
4301                                         'uid'          => $r[0]['uid'],
4302                                         'link'             => $a->get_baseurl() . '/notifications/intro',
4303                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
4304                                         'source_link'  => $contact_record['url'],
4305                                         'source_photo' => $contact_record['photo'],
4306                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
4307                                         'otype'        => 'intro'
4308                                 ));
4309
4310                         }
4311                 }
4312         }
4313 }
4314
4315 function lose_follower($importer,$contact,$datarray,$item) {
4316
4317         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
4318                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4319                         intval(CONTACT_IS_SHARING),
4320                         intval($contact['id'])
4321                 );
4322         }
4323         else {
4324                 contact_remove($contact['id']);
4325         }
4326 }
4327
4328 function lose_sharer($importer,$contact,$datarray,$item) {
4329
4330         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
4331                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4332                         intval(CONTACT_IS_FOLLOWER),
4333                         intval($contact['id'])
4334                 );
4335         }
4336         else {
4337                 contact_remove($contact['id']);
4338         }
4339 }
4340
4341
4342 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
4343
4344         $a = get_app();
4345
4346         if(is_array($importer)) {
4347                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
4348                         intval($importer['uid'])
4349                 );
4350         }
4351
4352         // Diaspora has different message-ids in feeds than they do
4353         // through the direct Diaspora protocol. If we try and use
4354         // the feed, we'll get duplicates. So don't.
4355
4356         if((! count($r)) || $contact['network'] === NETWORK_DIASPORA)
4357                 return;
4358
4359         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
4360
4361         // Use a single verify token, even if multiple hubs
4362
4363         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
4364
4365         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
4366
4367         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
4368
4369         if(!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
4370                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
4371                         dbesc($verify_token),
4372                         intval($contact['id'])
4373                 );
4374         }
4375
4376         post_url($url,$params);
4377
4378         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
4379
4380         return;
4381
4382 }
4383
4384
4385 function atom_author($tag,$name,$uri,$h,$w,$photo) {
4386         $o = '';
4387         if(! $tag)
4388                 return $o;
4389         $name = xmlify($name);
4390         $uri = xmlify($uri);
4391         $h = intval($h);
4392         $w = intval($w);
4393         $photo = xmlify($photo);
4394
4395
4396         $o .= "<$tag>\r\n";
4397         $o .= "\t<name>$name</name>\r\n";
4398         $o .= "\t<uri>$uri</uri>\r\n";
4399         $o .= "\t".'<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4400         $o .= "\t".'<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4401
4402         if ($tag == "author") {
4403                 $r = q("SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
4404                                 `profile`.`name`, `profile`.`pub_keywords`, `profile`.`about`,
4405                                 `profile`.`homepage`,`contact`.`nick` FROM `profile`
4406                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
4407                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
4408                                 WHERE `profile`.`is-default` AND `contact`.`self` AND
4409                                         NOT `user`.`hidewall` AND `contact`.`nurl`='%s'",
4410                         dbesc(normalise_link($uri)));
4411                 if ($r) {
4412                         $location = '';
4413                         if($r[0]['locality'])
4414                                 $location .= $r[0]['locality'];
4415                         if($r[0]['region']) {
4416                                 if($location)
4417                                         $location .= ', ';
4418                                 $location .= $r[0]['region'];
4419                         }
4420                         if($r[0]['country-name']) {
4421                                 if($location)
4422                                         $location .= ', ';
4423                                 $location .= $r[0]['country-name'];
4424                         }
4425
4426                         $o .= "\t<poco:preferredUsername>".xmlify($r[0]["nick"])."</poco:preferredUsername>\r\n";
4427                         $o .= "\t<poco:displayName>".xmlify($r[0]["name"])."</poco:displayName>\r\n";
4428                         $o .= "\t<poco:note>".xmlify($r[0]["about"])."</poco:note>\r\n";
4429                         $o .= "\t<poco:address>\r\n";
4430                         $o .= "\t\t<poco:formatted>".xmlify($location)."</poco:formatted>\r\n";
4431                         $o .= "\t</poco:address>\r\n";
4432                         $o .= "\t<poco:urls>\r\n";
4433                         $o .= "\t<poco:type>homepage</poco:type>\r\n";
4434                         $o .= "\t\t<poco:value>".xmlify($r[0]["homepage"])."</poco:value>\r\n";
4435                         $o .= "\t\t<poco:primary>true</poco:primary>\r\n";
4436                         $o .= "\t</poco:urls>\r\n";
4437                 }
4438         }
4439
4440         call_hooks('atom_author', $o);
4441
4442         $o .= "</$tag>\r\n";
4443         return $o;
4444 }
4445
4446 function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
4447
4448         $a = get_app();
4449
4450         if(! $item['parent'])
4451                 return;
4452
4453         if($item['deleted'])
4454                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
4455
4456
4457         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
4458                 $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid);
4459         else
4460                 $body = $item['body'];
4461
4462
4463         $o = "\r\n\r\n<entry>\r\n";
4464
4465         if(is_array($author))
4466                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
4467         else
4468                 $o .= atom_author('author',(($item['author-name']) ? $item['author-name'] : $item['name']),(($item['author-link']) ? $item['author-link'] : $item['url']),80,80,(($item['author-avatar']) ? $item['author-avatar'] : $item['thumb']));
4469         if(strlen($item['owner-name']))
4470                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
4471
4472         if(($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
4473                 $parent = q("SELECT `guid` FROM `item` WHERE `id` = %d", intval($item["parent"]));
4474                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
4475                 $o .= '<thr:in-reply-to ref="'.xmlify($parent_item).'" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$parent[0]['guid']).'" />'."\r\n";
4476         }
4477
4478         $htmlbody = $body;
4479
4480         if ($item['title'] != "")
4481                 $htmlbody = "[b]".$item['title']."[/b]\n\n".$htmlbody;
4482
4483         $htmlbody = bbcode($htmlbody, false, false, 7);
4484
4485         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
4486         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
4487         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
4488         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
4489         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
4490         $o .= '<content type="' . $type . '" >' . xmlify((($type === 'html') ? $htmlbody : $body)) . '</content>' . "\r\n";
4491         $o .= '<link rel="alternate" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$item['guid']).'" />'."\r\n";
4492
4493         $o .= '<status_net notice_id="'.$item['id'].'"></status_net>'."\r\n";
4494
4495         if($comment)
4496                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
4497
4498         if($item['location']) {
4499                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
4500                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
4501         }
4502
4503         if($item['coord'])
4504                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
4505
4506         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
4507                 $o .= '<dfrn:private>' . (($item['private']) ? $item['private'] : 1) . '</dfrn:private>' . "\r\n";
4508
4509         if($item['extid'])
4510                 $o .= '<dfrn:extid>' . xmlify($item['extid']) . '</dfrn:extid>' . "\r\n";
4511         if($item['bookmark'])
4512                 $o .= '<dfrn:bookmark>true</dfrn:bookmark>' . "\r\n";
4513
4514         if($item['app'])
4515                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
4516
4517         if($item['guid'])
4518                 $o .= '<dfrn:diaspora_guid>' . $item['guid'] . '</dfrn:diaspora_guid>' . "\r\n";
4519
4520         if($item['signed_text']) {
4521                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
4522                 $o .= '<dfrn:diaspora_signature>' . xmlify($sign) . '</dfrn:diaspora_signature>' . "\r\n";
4523         }
4524
4525         $verb = construct_verb($item);
4526         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
4527         $actobj = construct_activity_object($item);
4528         if(strlen($actobj))
4529                 $o .= $actobj;
4530         $actarg = construct_activity_target($item);
4531         if(strlen($actarg))
4532                 $o .= $actarg;
4533
4534         $tags = item_getfeedtags($item);
4535         if(count($tags)) {
4536                 foreach($tags as $t)
4537                         if (($type != 'html') OR ($t[0] != "@"))
4538                                 $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
4539         }
4540
4541         // To-Do:
4542         // To support these elements, the API needs to be enhanced
4543         //$o .= '<link rel="ostatus:conversation" href="'.xmlify($a->get_baseurl().'/display/'.$owner['nickname'].'/'.$item['parent']).'"/>'."\r\n";
4544         //$o .= "\t".'<link rel="self" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4545         //$o .= "\t".'<link rel="edit" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4546
4547         $o .= item_get_attachment($item);
4548
4549         $o .= item_getfeedattach($item);
4550
4551         $mentioned = get_mentions($item);
4552         if($mentioned)
4553                 $o .= $mentioned;
4554
4555         call_hooks('atom_entry', $o);
4556
4557         $o .= '</entry>' . "\r\n";
4558
4559         return $o;
4560 }
4561
4562 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
4563
4564         if(get_config('system','disable_embedded'))
4565                 return $s;
4566
4567         $a = get_app();
4568
4569         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
4570         $site = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://'));
4571
4572         $orig_body = $s;
4573         $new_body = '';
4574
4575         $img_start = strpos($orig_body, '[img');
4576         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4577         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4578         while( ($img_st_close !== false) && ($img_len !== false) ) {
4579
4580                 $img_st_close++; // make it point to AFTER the closing bracket
4581                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
4582
4583                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
4584
4585
4586                 if(stristr($image , $site . '/photo/')) {
4587                         // Only embed locally hosted photos
4588                         $replace = false;
4589                         $i = basename($image);
4590                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
4591                         $x = strpos($i,'-');
4592
4593                         if($x) {
4594                                 $res = substr($i,$x+1);
4595                                 $i = substr($i,0,$x);
4596                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
4597                                         dbesc($i),
4598                                         intval($res),
4599                                         intval($uid)
4600                                 );
4601                                 if($r) {
4602
4603                                         // Check to see if we should replace this photo link with an embedded image
4604                                         // 1. No need to do so if the photo is public
4605                                         // 2. If there's a contact-id provided, see if they're in the access list
4606                                         //    for the photo. If so, embed it.
4607                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
4608                                         //    permissions, regardless of order but first check to see if they're an exact
4609                                         //    match to save some processing overhead.
4610
4611                                         if(has_permissions($r[0])) {
4612                                                 if($cid) {
4613                                                         $recips = enumerate_permissions($r[0]);
4614                                                         if(in_array($cid, $recips)) {
4615                                                                 $replace = true;
4616                                                         }
4617                                                 }
4618                                                 elseif($item) {
4619                                                         if(compare_permissions($item,$r[0]))
4620                                                                 $replace = true;
4621                                                 }
4622                                         }
4623                                         if($replace) {
4624                                                 $data = $r[0]['data'];
4625                                                 $type = $r[0]['type'];
4626
4627                                                 // If a custom width and height were specified, apply before embedding
4628                                                 if(preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
4629                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
4630
4631                                                         $width = intval($match[1]);
4632                                                         $height = intval($match[2]);
4633
4634                                                         $ph = new Photo($data, $type);
4635                                                         if($ph->is_valid()) {
4636                                                                 $ph->scaleImage(max($width, $height));
4637                                                                 $data = $ph->imageString();
4638                                                                 $type = $ph->getType();
4639                                                         }
4640                                                 }
4641
4642                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
4643                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
4644                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
4645                                         }
4646                                 }
4647                         }
4648                 }
4649
4650                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
4651                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
4652                 if($orig_body === false)
4653                         $orig_body = '';
4654
4655                 $img_start = strpos($orig_body, '[img');
4656                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4657                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4658         }
4659
4660         $new_body = $new_body . $orig_body;
4661
4662         return($new_body);
4663 }
4664
4665
4666 function has_permissions($obj) {
4667         if(($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
4668                 return true;
4669         return false;
4670 }
4671
4672 function compare_permissions($obj1,$obj2) {
4673         // first part is easy. Check that these are exactly the same.
4674         if(($obj1['allow_cid'] == $obj2['allow_cid'])
4675                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
4676                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
4677                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
4678                 return true;
4679
4680         // This is harder. Parse all the permissions and compare the resulting set.
4681
4682         $recipients1 = enumerate_permissions($obj1);
4683         $recipients2 = enumerate_permissions($obj2);
4684         sort($recipients1);
4685         sort($recipients2);
4686         if($recipients1 == $recipients2)
4687                 return true;
4688         return false;
4689 }
4690
4691 // returns an array of contact-ids that are allowed to see this object
4692
4693 function enumerate_permissions($obj) {
4694         require_once('include/group.php');
4695         $allow_people = expand_acl($obj['allow_cid']);
4696         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
4697         $deny_people  = expand_acl($obj['deny_cid']);
4698         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
4699         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
4700         $deny         = array_unique(array_merge($deny_people,$deny_groups));
4701         $recipients   = array_diff($recipients,$deny);
4702         return $recipients;
4703 }
4704
4705 function item_getfeedtags($item) {
4706         $ret = array();
4707         $matches = false;
4708         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4709         if($cnt) {
4710                 for($x = 0; $x < $cnt; $x ++) {
4711                         if($matches[1][$x])
4712                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
4713                 }
4714         }
4715         $matches = false;
4716         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4717         if($cnt) {
4718                 for($x = 0; $x < $cnt; $x ++) {
4719                         if($matches[1][$x])
4720                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
4721                 }
4722         }
4723         return $ret;
4724 }
4725
4726 function item_get_attachment($item) {
4727         $o = "";
4728         $siteinfo = get_attached_data($item["body"]);
4729
4730         switch($siteinfo["type"]) {
4731                 case 'link':
4732                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4733                         break;
4734                 case 'photo':
4735                         $imgdata = get_photo_info($siteinfo["image"]);
4736                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["image"]).'" type="'.$imgdata["mime"].'" length="'.$imgdata["size"].'"/>'."\r\n";
4737                         break;
4738                 case 'video':
4739                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4740                         break;
4741                 default:
4742                         break;
4743         }
4744
4745         return $o;
4746 }
4747
4748 function item_getfeedattach($item) {
4749         $ret = '';
4750         $arr = explode('[/attach],',$item['attach']);
4751         if(count($arr)) {
4752                 foreach($arr as $r) {
4753                         $matches = false;
4754                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches);
4755                         if($cnt) {
4756                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
4757                                 if(intval($matches[2]))
4758                                         $ret .= 'length="' . intval($matches[2]) . '" ';
4759                                 if($matches[4] !== ' ')
4760                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
4761                                 $ret .= ' />' . "\r\n";
4762                         }
4763                 }
4764         }
4765         return $ret;
4766 }
4767
4768
4769
4770 function item_expire($uid, $days, $network = "", $force = false) {
4771
4772         if((! $uid) || ($days < 1))
4773                 return;
4774
4775         // $expire_network_only = save your own wall posts
4776         // and just expire conversations started by others
4777
4778         $expire_network_only = get_pconfig($uid,'expire','network_only');
4779         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
4780
4781         if ($network != "") {
4782                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
4783                 // There is an index "uid_network_received" but not "uid_network_created"
4784                 // This avoids the creation of another index just for one purpose.
4785                 // And it doesn't really matter wether to look at "received" or "created"
4786                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4787         } else
4788                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4789
4790         $r = q("SELECT * FROM `item`
4791                 WHERE `uid` = %d $range
4792                 AND `id` = `parent`
4793                 $sql_extra
4794                 AND `deleted` = 0",
4795                 intval($uid),
4796                 intval($days)
4797         );
4798
4799         if(! count($r))
4800                 return;
4801
4802         $expire_items = get_pconfig($uid, 'expire','items');
4803         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
4804
4805         // Forcing expiring of items - but not notes and marked items
4806         if ($force)
4807                 $expire_items = true;
4808
4809         $expire_notes = get_pconfig($uid, 'expire','notes');
4810         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
4811
4812         $expire_starred = get_pconfig($uid, 'expire','starred');
4813         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
4814
4815         $expire_photos = get_pconfig($uid, 'expire','photos');
4816         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
4817
4818         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
4819
4820         foreach($r as $item) {
4821
4822                 // don't expire filed items
4823
4824                 if(strpos($item['file'],'[') !== false)
4825                         continue;
4826
4827                 // Only expire posts, not photos and photo comments
4828
4829                 if($expire_photos==0 && strlen($item['resource-id']))
4830                         continue;
4831                 if($expire_starred==0 && intval($item['starred']))
4832                         continue;
4833                 if($expire_notes==0 && $item['type']=='note')
4834                         continue;
4835                 if($expire_items==0 && $item['type']!='note')
4836                         continue;
4837
4838                 drop_item($item['id'],false);
4839         }
4840
4841         proc_run('php',"include/notifier.php","expire","$uid");
4842
4843 }
4844
4845
4846 function drop_items($items) {
4847         $uid = 0;
4848
4849         if(! local_user() && ! remote_user())
4850                 return;
4851
4852         if(count($items)) {
4853                 foreach($items as $item) {
4854                         $owner = drop_item($item,false);
4855                         if($owner && ! $uid)
4856                                 $uid = $owner;
4857                 }
4858         }
4859
4860         // multiple threads may have been deleted, send an expire notification
4861
4862         if($uid)
4863                 proc_run('php',"include/notifier.php","expire","$uid");
4864 }
4865
4866
4867 function drop_item($id,$interactive = true) {
4868
4869         $a = get_app();
4870
4871         // locate item to be deleted
4872
4873         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
4874                 intval($id)
4875         );
4876
4877         if(! count($r)) {
4878                 if(! $interactive)
4879                         return 0;
4880                 notice( t('Item not found.') . EOL);
4881                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4882         }
4883
4884         $item = $r[0];
4885
4886         $owner = $item['uid'];
4887
4888         $cid = 0;
4889
4890         // check if logged in user is either the author or owner of this item
4891
4892         if(is_array($_SESSION['remote'])) {
4893                 foreach($_SESSION['remote'] as $visitor) {
4894                         if($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
4895                                 $cid = $visitor['cid'];
4896                                 break;
4897                         }
4898                 }
4899         }
4900
4901
4902         if((local_user() == $item['uid']) || ($cid) || (! $interactive)) {
4903
4904                 // Check if we should do HTML-based delete confirmation
4905                 if($_REQUEST['confirm']) {
4906                         // <form> can't take arguments in its "action" parameter
4907                         // so add any arguments as hidden inputs
4908                         $query = explode_querystring($a->query_string);
4909                         $inputs = array();
4910                         foreach($query['args'] as $arg) {
4911                                 if(strpos($arg, 'confirm=') === false) {
4912                                         $arg_parts = explode('=', $arg);
4913                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
4914                                 }
4915                         }
4916
4917                         return replace_macros(get_markup_template('confirm.tpl'), array(
4918                                 '$method' => 'get',
4919                                 '$message' => t('Do you really want to delete this item?'),
4920                                 '$extra_inputs' => $inputs,
4921                                 '$confirm' => t('Yes'),
4922                                 '$confirm_url' => $query['base'],
4923                                 '$confirm_name' => 'confirmed',
4924                                 '$cancel' => t('Cancel'),
4925                         ));
4926                 }
4927                 // Now check how the user responded to the confirmation query
4928                 if($_REQUEST['canceled']) {
4929                         goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4930                 }
4931
4932                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
4933                 // delete the item
4934
4935                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
4936                         dbesc(datetime_convert()),
4937                         dbesc(datetime_convert()),
4938                         intval($item['id'])
4939                 );
4940                 create_tags_from_item($item['id']);
4941                 create_files_from_item($item['id']);
4942                 delete_thread($item['id'], $item['parent-uri']);
4943
4944                 // clean up categories and tags so they don't end up as orphans
4945
4946                 $matches = false;
4947                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
4948                 if($cnt) {
4949                         foreach($matches as $mtch) {
4950                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
4951                         }
4952                 }
4953
4954                 $matches = false;
4955
4956                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
4957                 if($cnt) {
4958                         foreach($matches as $mtch) {
4959                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
4960                         }
4961                 }
4962
4963                 // If item is a link to a photo resource, nuke all the associated photos
4964                 // (visitors will not have photo resources)
4965                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
4966                 // generate a resource-id and therefore aren't intimately linked to the item.
4967
4968                 if(strlen($item['resource-id'])) {
4969                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
4970                                 dbesc($item['resource-id']),
4971                                 intval($item['uid'])
4972                         );
4973                         // ignore the result
4974                 }
4975
4976                 // If item is a link to an event, nuke the event record.
4977
4978                 if(intval($item['event-id'])) {
4979                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
4980                                 intval($item['event-id']),
4981                                 intval($item['uid'])
4982                         );
4983                         // ignore the result
4984                 }
4985
4986                 // If item has attachments, drop them
4987
4988                 foreach(explode(",",$item['attach']) as $attach){
4989                         preg_match("|attach/(\d+)|", $attach, $matches);
4990                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
4991                                 intval($matches[1]),
4992                                 local_user()
4993                         );
4994                         // ignore the result
4995                 }
4996
4997
4998                 // clean up item_id and sign meta-data tables
4999
5000                 /*
5001                 // Old code - caused very long queries and warning entries in the mysql logfiles:
5002
5003                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
5004                         intval($item['id']),
5005                         intval($item['uid'])
5006                 );
5007
5008                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
5009                         intval($item['id']),
5010                         intval($item['uid'])
5011                 );
5012                 */
5013
5014                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
5015
5016                 // Creating list of parents
5017                 $r = q("select id from item where parent = %d and uid = %d",
5018                         intval($item['id']),
5019                         intval($item['uid'])
5020                 );
5021
5022                 $parentid = "";
5023
5024                 foreach ($r AS $row) {
5025                         if ($parentid != "")
5026                                 $parentid .= ", ";
5027
5028                         $parentid .= $row["id"];
5029                 }
5030
5031                 // Now delete them
5032                 if ($parentid != "") {
5033                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
5034
5035                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
5036                 }
5037
5038                 // If it's the parent of a comment thread, kill all the kids
5039
5040                 if($item['uri'] == $item['parent-uri']) {
5041                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
5042                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
5043                                 dbesc(datetime_convert()),
5044                                 dbesc(datetime_convert()),
5045                                 dbesc($item['parent-uri']),
5046                                 intval($item['uid'])
5047                         );
5048                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
5049                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
5050                         delete_thread_uri($item['parent-uri'], $item['uid']);
5051                         // ignore the result
5052                 }
5053                 else {
5054                         // ensure that last-child is set in case the comment that had it just got wiped.
5055                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
5056                                 dbesc(datetime_convert()),
5057                                 dbesc($item['parent-uri']),
5058                                 intval($item['uid'])
5059                         );
5060                         // who is the last child now?
5061                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
5062                                 dbesc($item['parent-uri']),
5063                                 intval($item['uid'])
5064                         );
5065                         if(count($r)) {
5066                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
5067                                         intval($r[0]['id'])
5068                                 );
5069                         }
5070
5071                         // Add a relayable_retraction signature for Diaspora.
5072                         store_diaspora_retract_sig($item, $a->user, $a->get_baseurl());
5073                 }
5074
5075                 $drop_id = intval($item['id']);
5076
5077                 // send the notification upstream/downstream as the case may be
5078
5079                 proc_run('php',"include/notifier.php","drop","$drop_id");
5080
5081                 if(! $interactive)
5082                         return $owner;
5083                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5084                 //NOTREACHED
5085         }
5086         else {
5087                 if(! $interactive)
5088                         return 0;
5089                 notice( t('Permission denied.') . EOL);
5090                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5091                 //NOTREACHED
5092         }
5093
5094 }
5095
5096
5097 function first_post_date($uid,$wall = false) {
5098         $r = q("select id, created from item
5099                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
5100                 and id = parent
5101                 order by created asc limit 1",
5102                 intval($uid),
5103                 intval($wall ? 1 : 0)
5104         );
5105         if(count($r)) {
5106 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
5107                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
5108         }
5109         return false;
5110 }
5111
5112 /* modified posted_dates() {below} to arrange the list in years */
5113 function list_post_dates($uid, $wall) {
5114         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5115
5116         $dthen = first_post_date($uid, $wall);
5117         if(! $dthen)
5118                 return array();
5119
5120         // Set the start and end date to the beginning of the month
5121         $dnow = substr($dnow,0,8).'01';
5122         $dthen = substr($dthen,0,8).'01';
5123
5124         $ret = array();
5125
5126         // Starting with the current month, get the first and last days of every
5127         // month down to and including the month of the first post
5128         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5129                 $dyear = intval(substr($dnow,0,4));
5130                 $dstart = substr($dnow,0,8) . '01';
5131                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5132                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5133                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5134                 $str = day_translate(datetime_convert('','',$dnow,'F'));
5135                 if(! $ret[$dyear])
5136                         $ret[$dyear] = array();
5137                 $ret[$dyear][] = array($str,$end_month,$start_month);
5138                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5139         }
5140         return $ret;
5141 }
5142
5143 function posted_dates($uid,$wall) {
5144         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5145
5146         $dthen = first_post_date($uid,$wall);
5147         if(! $dthen)
5148                 return array();
5149
5150         // Set the start and end date to the beginning of the month
5151         $dnow = substr($dnow,0,8).'01';
5152         $dthen = substr($dthen,0,8).'01';
5153
5154         $ret = array();
5155         // Starting with the current month, get the first and last days of every
5156         // month down to and including the month of the first post
5157         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5158                 $dstart = substr($dnow,0,8) . '01';
5159                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5160                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5161                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5162                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
5163                 $ret[] = array($str,$end_month,$start_month);
5164                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5165         }
5166         return $ret;
5167 }
5168
5169
5170 function posted_date_widget($url,$uid,$wall) {
5171         $o = '';
5172
5173         if(! feature_enabled($uid,'archives'))
5174                 return $o;
5175
5176         // For former Facebook folks that left because of "timeline"
5177
5178 /*      if($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
5179                 return $o;*/
5180
5181         $visible_years = get_pconfig($uid,'system','archive_visible_years');
5182         if(! $visible_years)
5183                 $visible_years = 5;
5184
5185         $ret = list_post_dates($uid,$wall);
5186
5187         if(! count($ret))
5188                 return $o;
5189
5190         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
5191         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
5192
5193         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
5194                 '$title' => t('Archives'),
5195                 '$size' => $visible_years,
5196                 '$cutoff_year' => $cutoff_year,
5197                 '$cutoff' => $cutoff,
5198                 '$url' => $url,
5199                 '$dates' => $ret,
5200                 '$showmore' => t('show more')
5201
5202         ));
5203         return $o;
5204 }
5205
5206 function store_diaspora_retract_sig($item, $user, $baseurl) {
5207         // Note that we can't add a target_author_signature
5208         // if the comment was deleted by a remote user. That should be ok, because if a remote user is deleting
5209         // the comment, that means we're the home of the post, and Diaspora will only
5210         // check the parent_author_signature of retractions that it doesn't have to relay further
5211         //
5212         // I don't think this function gets called for an "unlike," but I'll check anyway
5213
5214         $enabled = intval(get_config('system','diaspora_enabled'));
5215         if(! $enabled) {
5216                 logger('drop_item: diaspora support disabled, not storing retraction signature', LOGGER_DEBUG);
5217                 return;
5218         }
5219
5220         logger('drop_item: storing diaspora retraction signature');
5221
5222         $signed_text = $item['guid'] . ';' . ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
5223
5224         if(local_user() == $item['uid']) {
5225
5226                 $handle = $user['nickname'] . '@' . substr($baseurl, strpos($baseurl,'://') + 3);
5227                 $authorsig = base64_encode(rsa_sign($signed_text,$user['prvkey'],'sha256'));
5228         }
5229         else {
5230                 $r = q("SELECT `nick`, `url` FROM `contact` WHERE `id` = '%d' LIMIT 1",
5231                         $item['contact-id'] // If this function gets called, drop_item() has already checked remote_user() == $item['contact-id']
5232                 );
5233                 if(count($r)) {
5234                         // The below handle only works for NETWORK_DFRN. I think that's ok, because this function
5235                         // only handles DFRN deletes
5236                         $handle_baseurl_start = strpos($r['url'],'://') + 3;
5237                         $handle_baseurl_length = strpos($r['url'],'/profile') - $handle_baseurl_start;
5238                         $handle = $r['nick'] . '@' . substr($r['url'], $handle_baseurl_start, $handle_baseurl_length);
5239                         $authorsig = '';
5240                 }
5241         }
5242
5243         if(isset($handle))
5244                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
5245                         intval($item['id']),
5246                         dbesc($signed_text),
5247                         dbesc($authorsig),
5248                         dbesc($handle)
5249                 );
5250
5251         return;
5252 }