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                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d AND `name` != '%s'",
2449                         dbesc(notags(trim($new_name))),
2450                         dbesc(datetime_convert()),
2451                         intval($contact['uid']),
2452                         intval($contact['id']),
2453                         dbesc(notags(trim($new_name)))
2454                 );
2455
2456                 // do our best to update the name on content items
2457
2458                 if(count($r) AND (notags(trim($new_name)) != $r[0]['name'])) {
2459                         q("UPDATE `item` SET `author-name` = '%s' WHERE `author-name` = '%s' AND `author-link` = '%s' AND `uid` = %d AND `author-name` != '%s'",
2460                                 dbesc(notags(trim($new_name))),
2461                                 dbesc($r[0]['name']),
2462                                 dbesc($r[0]['url']),
2463                                 intval($contact['uid']),
2464                                 dbesc(notags(trim($new_name)))
2465                         );
2466                 }
2467         }
2468
2469         if ($contact_updated AND $new_name AND $photo_url)
2470                 poco_check($contact['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $contact['id'], $contact['uid']);
2471
2472         if(strlen($birthday)) {
2473                 if(substr($birthday,0,4) != $contact['bdyear']) {
2474                         logger('consume_feed: updating birthday: ' . $birthday);
2475
2476                         /**
2477                          *
2478                          * Add new birthday event for this person
2479                          *
2480                          * $bdtext is just a readable placeholder in case the event is shared
2481                          * with others. We will replace it during presentation to our $importer
2482                          * to contain a sparkle link and perhaps a photo.
2483                          *
2484                          */
2485
2486                         $bdtext = sprintf( t('%s\'s birthday'), $contact['name']);
2487                         $bdtext2 = sprintf( t('Happy Birthday %s'), ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ) ;
2488
2489
2490                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`summary`,`desc`,`type`)
2491                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ",
2492                                 intval($contact['uid']),
2493                                 intval($contact['id']),
2494                                 dbesc(datetime_convert()),
2495                                 dbesc(datetime_convert()),
2496                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
2497                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
2498                                 dbesc($bdtext),
2499                                 dbesc($bdtext2),
2500                                 dbesc('birthday')
2501                         );
2502
2503
2504                         // update bdyear
2505
2506                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d",
2507                                 dbesc(substr($birthday,0,4)),
2508                                 intval($contact['uid']),
2509                                 intval($contact['id'])
2510                         );
2511
2512                         // This function is called twice without reloading the contact
2513                         // Make sure we only create one event. This is why &$contact
2514                         // is a reference var in this function
2515
2516                         $contact['bdyear'] = substr($birthday,0,4);
2517                 }
2518         }
2519
2520         $community_page = 0;
2521         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
2522         if($rawtags) {
2523                 $community_page = intval($rawtags[0]['data']);
2524         }
2525         if(is_array($contact) && intval($contact['forum']) != $community_page) {
2526                 q("update contact set forum = %d where id = %d",
2527                         intval($community_page),
2528                         intval($contact['id'])
2529                 );
2530                 $contact['forum'] = (string) $community_page;
2531         }
2532
2533
2534         // process any deleted entries
2535
2536         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
2537         if(is_array($del_entries) && count($del_entries) && $pass != 2) {
2538                 foreach($del_entries as $dentry) {
2539                         $deleted = false;
2540                         if(isset($dentry['attribs']['']['ref'])) {
2541                                 $uri = $dentry['attribs']['']['ref'];
2542                                 $deleted = true;
2543                                 if(isset($dentry['attribs']['']['when'])) {
2544                                         $when = $dentry['attribs']['']['when'];
2545                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
2546                                 }
2547                                 else
2548                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
2549                         }
2550                         if($deleted && is_array($contact)) {
2551                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN `contact` on `item`.`contact-id` = `contact`.`id`
2552                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
2553                                         dbesc($uri),
2554                                         intval($importer['uid']),
2555                                         intval($contact['id'])
2556                                 );
2557                                 if(count($r)) {
2558                                         $item = $r[0];
2559
2560                                         if(! $item['deleted'])
2561                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
2562
2563                                         if($item['object-type'] === ACTIVITY_OBJ_EVENT) {
2564                                                 logger("Deleting event ".$item['event-id'], LOGGER_DEBUG);
2565                                                 event_delete($item['event-id']);
2566                                         }
2567
2568                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2569                                                 $xo = parse_xml_string($item['object'],false);
2570                                                 $xt = parse_xml_string($item['target'],false);
2571                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
2572                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
2573                                                                 dbesc($xt->id),
2574                                                                 intval($importer['importer_uid'])
2575                                                         );
2576                                                         if(count($i)) {
2577
2578                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
2579
2580                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
2581                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
2582                                                                 $author_copy = (($item['origin']) ? true : false);
2583
2584                                                                 if($owner_remove && $author_copy)
2585                                                                         continue;
2586                                                                 if($author_remove || $owner_remove) {
2587                                                                         $tags = explode(',',$i[0]['tag']);
2588                                                                         $newtags = array();
2589                                                                         if(count($tags)) {
2590                                                                                 foreach($tags as $tag)
2591                                                                                         if(trim($tag) !== trim($xo->body))
2592                                                                                                 $newtags[] = trim($tag);
2593                                                                         }
2594                                                                         q("update item set tag = '%s' where id = %d",
2595                                                                                 dbesc(implode(',',$newtags)),
2596                                                                                 intval($i[0]['id'])
2597                                                                         );
2598                                                                         create_tags_from_item($i[0]['id']);
2599                                                                 }
2600                                                         }
2601                                                 }
2602                                         }
2603
2604                                         if($item['uri'] == $item['parent-uri']) {
2605                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2606                                                         `body` = '', `title` = ''
2607                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
2608                                                         dbesc($when),
2609                                                         dbesc(datetime_convert()),
2610                                                         dbesc($item['uri']),
2611                                                         intval($importer['uid'])
2612                                                 );
2613                                                 create_tags_from_itemuri($item['uri'], $importer['uid']);
2614                                                 create_files_from_itemuri($item['uri'], $importer['uid']);
2615                                                 update_thread_uri($item['uri'], $importer['uid']);
2616                                         }
2617                                         else {
2618                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2619                                                         `body` = '', `title` = ''
2620                                                         WHERE `uri` = '%s' AND `uid` = %d",
2621                                                         dbesc($when),
2622                                                         dbesc(datetime_convert()),
2623                                                         dbesc($uri),
2624                                                         intval($importer['uid'])
2625                                                 );
2626                                                 create_tags_from_itemuri($uri, $importer['uid']);
2627                                                 create_files_from_itemuri($uri, $importer['uid']);
2628                                                 if($item['last-child']) {
2629                                                         // ensure that last-child is set in case the comment that had it just got wiped.
2630                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2631                                                                 dbesc(datetime_convert()),
2632                                                                 dbesc($item['parent-uri']),
2633                                                                 intval($item['uid'])
2634                                                         );
2635                                                         // who is the last child now?
2636                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `moderated` = 0 AND `uid` = %d
2637                                                                 ORDER BY `created` DESC LIMIT 1",
2638                                                                         dbesc($item['parent-uri']),
2639                                                                         intval($importer['uid'])
2640                                                         );
2641                                                         if(count($r)) {
2642                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2643                                                                         intval($r[0]['id'])
2644                                                                 );
2645                                                         }
2646                                                 }
2647                                         }
2648                                 }
2649                         }
2650                 }
2651         }
2652
2653         // Now process the feed
2654
2655         if($feed->get_item_quantity()) {
2656
2657                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
2658
2659         // in inverse date order
2660                 if ($datedir)
2661                         $items = array_reverse($feed->get_items());
2662                 else
2663                         $items = $feed->get_items();
2664
2665
2666                 foreach($items as $item) {
2667
2668                         $is_reply = false;
2669                         $item_id = $item->get_id();
2670                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
2671                         if(isset($rawthread[0]['attribs']['']['ref'])) {
2672                                 $is_reply = true;
2673                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
2674                         }
2675
2676                         if(($is_reply) && is_array($contact)) {
2677
2678                                 if($pass == 1)
2679                                         continue;
2680
2681                                 // not allowed to post
2682
2683                                 if($contact['rel'] == CONTACT_IS_FOLLOWER)
2684                                         continue;
2685
2686
2687                                 // Have we seen it? If not, import it.
2688
2689                                 $item_id  = $item->get_id();
2690                                 $datarray = get_atom_elements($feed, $item, $contact);
2691
2692                                 if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2693                                         $datarray['author-name'] = $contact['name'];
2694                                 if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2695                                         $datarray['author-link'] = $contact['url'];
2696                                 if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2697                                         $datarray['author-avatar'] = $contact['thumb'];
2698
2699                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2700                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2701                                         continue;
2702                                 }
2703
2704                                 $force_parent = false;
2705                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2706                                         if($contact['network'] === NETWORK_OSTATUS)
2707                                                 $force_parent = true;
2708                                         if(strlen($datarray['title']))
2709                                                 unset($datarray['title']);
2710                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2711                                                 dbesc(datetime_convert()),
2712                                                 dbesc($parent_uri),
2713                                                 intval($importer['uid'])
2714                                         );
2715                                         $datarray['last-child'] = 1;
2716                                         update_thread_uri($parent_uri, $importer['uid']);
2717                                 }
2718
2719
2720                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2721                                         dbesc($item_id),
2722                                         intval($importer['uid'])
2723                                 );
2724
2725                                 // Update content if 'updated' changes
2726
2727                                 if(count($r)) {
2728                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2729
2730                                                 // do not accept (ignore) an earlier edit than one we currently have.
2731                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2732                                                         continue;
2733
2734                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2735                                                         dbesc($datarray['title']),
2736                                                         dbesc($datarray['body']),
2737                                                         dbesc($datarray['tag']),
2738                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2739                                                         dbesc(datetime_convert()),
2740                                                         dbesc($item_id),
2741                                                         intval($importer['uid'])
2742                                                 );
2743                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2744                                                 update_thread_uri($item_id, $importer['uid']);
2745                                         }
2746
2747                                         // update last-child if it changes
2748
2749                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2750                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
2751                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2752                                                         dbesc(datetime_convert()),
2753                                                         dbesc($parent_uri),
2754                                                         intval($importer['uid'])
2755                                                 );
2756                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
2757                                                         intval($allow[0]['data']),
2758                                                         dbesc(datetime_convert()),
2759                                                         dbesc($item_id),
2760                                                         intval($importer['uid'])
2761                                                 );
2762                                                 update_thread_uri($item_id, $importer['uid']);
2763                                         }
2764                                         continue;
2765                                 }
2766
2767
2768                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2769                                         // one way feed - no remote comment ability
2770                                         $datarray['last-child'] = 0;
2771                                 }
2772                                 $datarray['parent-uri'] = $parent_uri;
2773                                 $datarray['uid'] = $importer['uid'];
2774                                 $datarray['contact-id'] = $contact['id'];
2775                                 if(($datarray['verb'] === ACTIVITY_LIKE)
2776                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
2777                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
2778                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
2779                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
2780                                         $datarray['type'] = 'activity';
2781                                         $datarray['gravity'] = GRAVITY_LIKE;
2782                                         // only one like or dislike per person
2783                                         // splitted into two queries for performance issues
2784                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
2785                                                 intval($datarray['uid']),
2786                                                 intval($datarray['contact-id']),
2787                                                 dbesc($datarray['verb']),
2788                                                 dbesc($parent_uri)
2789                                         );
2790                                         if($r && count($r))
2791                                                 continue;
2792
2793                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
2794                                                 intval($datarray['uid']),
2795                                                 intval($datarray['contact-id']),
2796                                                 dbesc($datarray['verb']),
2797                                                 dbesc($parent_uri)
2798                                         );
2799                                         if($r && count($r))
2800                                                 continue;
2801                                 }
2802
2803                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2804                                         $xo = parse_xml_string($datarray['object'],false);
2805                                         $xt = parse_xml_string($datarray['target'],false);
2806
2807                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
2808                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
2809                                                         dbesc($xt->id),
2810                                                         intval($importer['importer_uid'])
2811                                                 );
2812                                                 if(! count($r))
2813                                                         continue;
2814
2815                                                 // extract tag, if not duplicate, add to parent item
2816                                                 if($xo->id && $xo->content) {
2817                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
2818                                                         if(! (stristr($r[0]['tag'],$newtag))) {
2819                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
2820                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . $newtag),
2821                                                                         intval($r[0]['id'])
2822                                                                 );
2823                                                                 create_tags_from_item($r[0]['id']);
2824                                                         }
2825                                                 }
2826                                         }
2827                                 }
2828
2829                                 $r = item_store($datarray,$force_parent);
2830                                 continue;
2831                         }
2832
2833                         else {
2834
2835                                 // Head post of a conversation. Have we seen it? If not, import it.
2836
2837                                 $item_id  = $item->get_id();
2838
2839                                 $datarray = get_atom_elements($feed, $item, $contact);
2840
2841                                 if(is_array($contact)) {
2842                                         if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2843                                                 $datarray['author-name'] = $contact['name'];
2844                                         if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2845                                                 $datarray['author-link'] = $contact['url'];
2846                                         if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2847                                                 $datarray['author-avatar'] = $contact['thumb'];
2848                                 }
2849
2850                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2851                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2852                                         continue;
2853                                 }
2854
2855                                 // special handling for events
2856
2857                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
2858                                         $ev = bbtoevent($datarray['body']);
2859                                         if((x($ev,'desc') || x($ev,'summary')) && x($ev,'start')) {
2860                                                 $ev['uid'] = $importer['uid'];
2861                                                 $ev['uri'] = $item_id;
2862                                                 $ev['edited'] = $datarray['edited'];
2863                                                 $ev['private'] = $datarray['private'];
2864                                                 $ev['guid'] = $datarray['guid'];
2865
2866                                                 if(is_array($contact))
2867                                                         $ev['cid'] = $contact['id'];
2868                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2869                                                         dbesc($item_id),
2870                                                         intval($importer['uid'])
2871                                                 );
2872                                                 if(count($r))
2873                                                         $ev['id'] = $r[0]['id'];
2874                                                 $xyz = event_store($ev);
2875                                                 continue;
2876                                         }
2877                                 }
2878
2879                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2880                                         if(strlen($datarray['title']))
2881                                                 unset($datarray['title']);
2882                                         $datarray['last-child'] = 1;
2883                                 }
2884
2885
2886                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2887                                         dbesc($item_id),
2888                                         intval($importer['uid'])
2889                                 );
2890
2891                                 // Update content if 'updated' changes
2892
2893                                 if(count($r)) {
2894                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2895
2896                                                 // do not accept (ignore) an earlier edit than one we currently have.
2897                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2898                                                         continue;
2899
2900                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2901                                                         dbesc($datarray['title']),
2902                                                         dbesc($datarray['body']),
2903                                                         dbesc($datarray['tag']),
2904                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2905                                                         dbesc(datetime_convert()),
2906                                                         dbesc($item_id),
2907                                                         intval($importer['uid'])
2908                                                 );
2909                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2910                                                 update_thread_uri($item_id, $importer['uid']);
2911                                         }
2912
2913                                         // update last-child if it changes
2914
2915                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2916                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
2917                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2918                                                         intval($allow[0]['data']),
2919                                                         dbesc(datetime_convert()),
2920                                                         dbesc($item_id),
2921                                                         intval($importer['uid'])
2922                                                 );
2923                                                 update_thread_uri($item_id, $importer['uid']);
2924                                         }
2925                                         continue;
2926                                 }
2927
2928                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
2929                                         logger('consume-feed: New follower');
2930                                         new_follower($importer,$contact,$datarray,$item);
2931                                         return;
2932                                 }
2933                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
2934                                         lose_follower($importer,$contact,$datarray,$item);
2935                                         return;
2936                                 }
2937
2938                                 if(activity_match($datarray['verb'],ACTIVITY_REQ_FRIEND)) {
2939                                         logger('consume-feed: New friend request');
2940                                         new_follower($importer,$contact,$datarray,$item,true);
2941                                         return;
2942                                 }
2943                                 if(activity_match($datarray['verb'],ACTIVITY_UNFRIEND))  {
2944                                         lose_sharer($importer,$contact,$datarray,$item);
2945                                         return;
2946                                 }
2947
2948
2949                                 if(! is_array($contact))
2950                                         return;
2951
2952
2953                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2954                                                 // one way feed - no remote comment ability
2955                                                 $datarray['last-child'] = 0;
2956                                 }
2957                                 if($contact['network'] === NETWORK_FEED)
2958                                         $datarray['private'] = 2;
2959
2960                                 $datarray['parent-uri'] = $item_id;
2961                                 $datarray['uid'] = $importer['uid'];
2962                                 $datarray['contact-id'] = $contact['id'];
2963
2964                                 if(! link_compare($datarray['owner-link'],$contact['url'])) {
2965                                         // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
2966                                         // but otherwise there's a possible data mixup on the sender's system.
2967                                         // the tgroup delivery code called from item_store will correct it if it's a forum,
2968                                         // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
2969                                         logger('consume_feed: Correcting item owner.', LOGGER_DEBUG);
2970                                         $datarray['owner-name']   = $contact['name'];
2971                                         $datarray['owner-link']   = $contact['url'];
2972                                         $datarray['owner-avatar'] = $contact['thumb'];
2973                                 }
2974
2975                                 // We've allowed "followers" to reach this point so we can decide if they are
2976                                 // posting an @-tag delivery, which followers are allowed to do for certain
2977                                 // page types. Now that we've parsed the post, let's check if it is legit. Otherwise ignore it.
2978
2979                                 if(($contact['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['uid'],$datarray)))
2980                                         continue;
2981
2982                                 // This is my contact on another system, but it's really me.
2983                                 // Turn this into a wall post.
2984                                 $notify = item_is_remote_self($contact, $datarray);
2985
2986                                 $r = item_store($datarray, false, $notify);
2987                                 logger('Stored - Contact '.$contact['url'].' Notify '.$notify.' return '.$r.' Item '.print_r($datarray, true), LOGGER_DEBUG);
2988                                 continue;
2989
2990                         }
2991                 }
2992         }
2993 }
2994
2995 function item_is_remote_self($contact, &$datarray) {
2996         $a = get_app();
2997
2998         if (!$contact['remote_self'])
2999                 return false;
3000
3001         // Prevent the forwarding of posts that are forwarded
3002         if ($datarray["extid"] == NETWORK_DFRN)
3003                 return false;
3004
3005         // Prevent to forward already forwarded posts
3006         if ($datarray["app"] == $a->get_hostname())
3007                 return false;
3008
3009         // Only forward posts
3010         if ($datarray["verb"] != ACTIVITY_POST)
3011                 return false;
3012
3013         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
3014                 return false;
3015
3016         $datarray2 = $datarray;
3017         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
3018         if ($contact['remote_self'] == 2) {
3019                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
3020                         intval($contact['uid']));
3021                 if (count($r)) {
3022                         $datarray['contact-id'] = $r[0]["id"];
3023
3024                         $datarray['owner-name'] = $r[0]["name"];
3025                         $datarray['owner-link'] = $r[0]["url"];
3026                         $datarray['owner-avatar'] = $r[0]["thumb"];
3027
3028                         $datarray['author-name']   = $datarray['owner-name'];
3029                         $datarray['author-link']   = $datarray['owner-link'];
3030                         $datarray['author-avatar'] = $datarray['owner-avatar'];
3031                 }
3032
3033                 if ($contact['network'] != NETWORK_FEED) {
3034                         $datarray["guid"] = get_guid(32);
3035                         unset($datarray["plink"]);
3036                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
3037                         $datarray["parent-uri"] = $datarray["uri"];
3038                         $datarray["extid"] = $contact['network'];
3039                         $urlpart = parse_url($datarray2['author-link']);
3040                         $datarray["app"] = $urlpart["host"];
3041                 } else
3042                         $datarray['private'] = 0;
3043         }
3044
3045         if ($contact['network'] != NETWORK_FEED) {
3046                 // Store the original post
3047                 $r = item_store($datarray2, false, false);
3048                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
3049         } else
3050                 $datarray["app"] = "Feed";
3051
3052         return true;
3053 }
3054
3055 function local_delivery($importer,$data) {
3056         $a = get_app();
3057
3058         logger(__function__, LOGGER_TRACE);
3059
3060         if($importer['readonly']) {
3061                 // We aren't receiving stuff from this person. But we will quietly ignore them
3062                 // rather than a blatant "go away" message.
3063                 logger('local_delivery: ignoring');
3064                 return 0;
3065                 //NOTREACHED
3066         }
3067
3068         // Consume notification feed. This may differ from consuming a public feed in several ways
3069         // - might contain email or friend suggestions
3070         // - might contain remote followup to our message
3071         //              - in which case we need to accept it and then notify other conversants
3072         // - we may need to send various email notifications
3073
3074         $feed = new SimplePie();
3075         $feed->set_raw_data($data);
3076         $feed->enable_order_by_date(false);
3077         $feed->init();
3078
3079
3080         if($feed->error())
3081                 logger('local_delivery: Error parsing XML: ' . $feed->error());
3082
3083
3084         // Check at the feed level for updated contact name and/or photo
3085
3086         $name_updated  = '';
3087         $new_name = '';
3088         $photo_timestamp = '';
3089         $photo_url = '';
3090         $contact_updated = '';
3091
3092
3093         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
3094
3095 // Fallback should not be needed here. If it isn't DFRN it won't have DFRN updated tags
3096 //      if(! $rawtags)
3097 //              $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
3098
3099         if($rawtags) {
3100                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
3101                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
3102                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
3103                         $new_name = $elems['name'][0]['data'];
3104
3105                         // Manually checking for changed contact names
3106                         if (($new_name != $importer['name']) AND ($new_name != "") AND ($name_updated <= $importer['name-date'])) {
3107                                 $name_updated = date("c");
3108                                 $photo_timestamp = date("c");
3109                         }
3110                 }
3111                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
3112                         if ($photo_timestamp == "")
3113                                 $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
3114                         $photo_url = $elems['link'][0]['attribs']['']['href'];
3115                 }
3116         }
3117
3118         if(($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $importer['avatar-date'])) {
3119
3120                 $contact_updated = $photo_timestamp;
3121
3122                 logger('local_delivery: Updating photo for ' . $importer['name']);
3123                 require_once("include/Photo.php");
3124                 $photo_failure = false;
3125                 $have_photo = false;
3126
3127                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
3128                         intval($importer['id']),
3129                         intval($importer['importer_uid'])
3130                 );
3131                 if(count($r)) {
3132                         $resource_id = $r[0]['resource-id'];
3133                         $have_photo = true;
3134                 }
3135                 else {
3136                         $resource_id = photo_new_resource();
3137                 }
3138
3139                 $img_str = fetch_url($photo_url,true);
3140                 // guess mimetype from headers or filename
3141                 $type = guess_image_type($photo_url,true);
3142
3143
3144                 $img = new Photo($img_str, $type);
3145                 if($img->is_valid()) {
3146                         if($have_photo) {
3147                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
3148                                         dbesc($resource_id),
3149                                         intval($importer['id']),
3150                                         intval($importer['importer_uid'])
3151                                 );
3152                         }
3153
3154                         $img->scaleImageSquare(175);
3155
3156                         $hash = $resource_id;
3157                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 4);
3158
3159                         $img->scaleImage(80);
3160                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 5);
3161
3162                         $img->scaleImage(48);
3163                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 6);
3164
3165                         $a = get_app();
3166
3167                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
3168                                 WHERE `uid` = %d AND `id` = %d",
3169                                 dbesc(datetime_convert()),
3170                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.'.$img->getExt()),
3171                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.'.$img->getExt()),
3172                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.'.$img->getExt()),
3173                                 intval($importer['importer_uid']),
3174                                 intval($importer['id'])
3175                         );
3176                 }
3177         }
3178
3179         if(($name_updated) && (strlen($new_name)) && ($name_updated > $importer['name-date'])) {
3180                 if ($name_updated > $contact_updated)
3181                         $contact_updated = $name_updated;
3182
3183                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `id` = %d LIMIT 1",
3184                         intval($importer['importer_uid']),
3185                         intval($importer['id'])
3186                 );
3187
3188                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d AND `name` != '%s'",
3189                         dbesc(notags(trim($new_name))),
3190                         dbesc(datetime_convert()),
3191                         intval($importer['importer_uid']),
3192                         intval($importer['id']),
3193                         dbesc(notags(trim($new_name)))
3194                 );
3195
3196                 // do our best to update the name on content items
3197
3198                 if(count($r) AND (notags(trim($new_name)) != $r[0]['name'])) {
3199                         q("UPDATE `item` SET `author-name` = '%s' WHERE `author-name` = '%s' AND `author-link` = '%s' AND `uid` = %d AND `author-name` != '%s'",
3200                                 dbesc(notags(trim($new_name))),
3201                                 dbesc($r[0]['name']),
3202                                 dbesc($r[0]['url']),
3203                                 intval($importer['importer_uid']),
3204                                 dbesc(notags(trim($new_name)))
3205                         );
3206                 }
3207         }
3208
3209         if ($contact_updated AND $new_name AND $photo_url)
3210                 poco_check($importer['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $importer['id'], $importer['importer_uid']);
3211
3212         // Currently unsupported - needs a lot of work
3213         $reloc = $feed->get_feed_tags( NAMESPACE_DFRN, 'relocate' );
3214         if(isset($reloc[0]['child'][NAMESPACE_DFRN])) {
3215                 $base = $reloc[0]['child'][NAMESPACE_DFRN];
3216                 $newloc = array();
3217                 $newloc['uid'] = $importer['importer_uid'];
3218                 $newloc['cid'] = $importer['id'];
3219                 $newloc['name'] = notags(unxmlify($base['name'][0]['data']));
3220                 $newloc['photo'] = notags(unxmlify($base['photo'][0]['data']));
3221                 $newloc['thumb'] = notags(unxmlify($base['thumb'][0]['data']));
3222                 $newloc['micro'] = notags(unxmlify($base['micro'][0]['data']));
3223                 $newloc['url'] = notags(unxmlify($base['url'][0]['data']));
3224                 $newloc['request'] = notags(unxmlify($base['request'][0]['data']));
3225                 $newloc['confirm'] = notags(unxmlify($base['confirm'][0]['data']));
3226                 $newloc['notify'] = notags(unxmlify($base['notify'][0]['data']));
3227                 $newloc['poll'] = notags(unxmlify($base['poll'][0]['data']));
3228                 $newloc['sitepubkey'] = notags(unxmlify($base['sitepubkey'][0]['data']));
3229                 /** relocated user must have original key pair */
3230                 /*$newloc['pubkey'] = notags(unxmlify($base['pubkey'][0]['data']));
3231                 $newloc['prvkey'] = notags(unxmlify($base['prvkey'][0]['data']));*/
3232
3233                 logger("items:relocate contact ".print_r($newloc, true).print_r($importer, true), LOGGER_DEBUG);
3234
3235                 // update contact
3236                 $r = q("SELECT photo, url FROM contact WHERE id=%d AND uid=%d;",
3237                         intval($importer['id']),
3238                         intval($importer['importer_uid']));
3239                 if ($r === false)
3240                         return 1;
3241                 $old = $r[0];
3242
3243                 $x = q("UPDATE contact SET
3244                                         name = '%s',
3245                                         photo = '%s',
3246                                         thumb = '%s',
3247                                         micro = '%s',
3248                                         url = '%s',
3249                                         nurl = '%s',
3250                                         request = '%s',
3251                                         confirm = '%s',
3252                                         notify = '%s',
3253                                         poll = '%s',
3254                                         `site-pubkey` = '%s'
3255                         WHERE id=%d AND uid=%d;",
3256                                         dbesc($newloc['name']),
3257                                         dbesc($newloc['photo']),
3258                                         dbesc($newloc['thumb']),
3259                                         dbesc($newloc['micro']),
3260                                         dbesc($newloc['url']),
3261                                         dbesc(normalise_link($newloc['url'])),
3262                                         dbesc($newloc['request']),
3263                                         dbesc($newloc['confirm']),
3264                                         dbesc($newloc['notify']),
3265                                         dbesc($newloc['poll']),
3266                                         dbesc($newloc['sitepubkey']),
3267                                         intval($importer['id']),
3268                                         intval($importer['importer_uid']));
3269
3270                 if ($x === false)
3271                         return 1;
3272                 // update items
3273                 $fields = array(
3274                         'owner-link' => array($old['url'], $newloc['url']),
3275                         'author-link' => array($old['url'], $newloc['url']),
3276                         'owner-avatar' => array($old['photo'], $newloc['photo']),
3277                         'author-avatar' => array($old['photo'], $newloc['photo']),
3278                         );
3279                 foreach ($fields as $n=>$f){
3280                         $x = q("UPDATE `item` SET `%s`='%s' WHERE `%s`='%s' AND uid=%d",
3281                                         $n, dbesc($f[1]),
3282                                         $n, dbesc($f[0]),
3283                                         intval($importer['importer_uid']));
3284                                 if ($x === false)
3285                                         return 1;
3286                         }
3287
3288                 // TODO
3289                 // merge with current record, current contents have priority
3290                 // update record, set url-updated
3291                 // update profile photos
3292                 // schedule a scan?
3293                 return 0;
3294         }
3295
3296
3297         // handle friend suggestion notification
3298
3299         $sugg = $feed->get_feed_tags( NAMESPACE_DFRN, 'suggest' );
3300         if(isset($sugg[0]['child'][NAMESPACE_DFRN])) {
3301                 $base = $sugg[0]['child'][NAMESPACE_DFRN];
3302                 $fsugg = array();
3303                 $fsugg['uid'] = $importer['importer_uid'];
3304                 $fsugg['cid'] = $importer['id'];
3305                 $fsugg['name'] = notags(unxmlify($base['name'][0]['data']));
3306                 $fsugg['photo'] = notags(unxmlify($base['photo'][0]['data']));
3307                 $fsugg['url'] = notags(unxmlify($base['url'][0]['data']));
3308                 $fsugg['request'] = notags(unxmlify($base['request'][0]['data']));
3309                 $fsugg['body'] = escape_tags(unxmlify($base['note'][0]['data']));
3310
3311                 // Does our member already have a friend matching this description?
3312
3313                 $r = q("SELECT * FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
3314                         dbesc($fsugg['name']),
3315                         dbesc(normalise_link($fsugg['url'])),
3316                         intval($fsugg['uid'])
3317                 );
3318                 if(count($r))
3319                         return 0;
3320
3321                 // Do we already have an fcontact record for this person?
3322
3323                 $fid = 0;
3324                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3325                         dbesc($fsugg['url']),
3326                         dbesc($fsugg['name']),
3327                         dbesc($fsugg['request'])
3328                 );
3329                 if(count($r)) {
3330                         $fid = $r[0]['id'];
3331
3332                         // OK, we do. Do we already have an introduction for this person ?
3333                         $r = q("select id from intro where uid = %d and fid = %d limit 1",
3334                                 intval($fsugg['uid']),
3335                                 intval($fid)
3336                         );
3337                         if(count($r))
3338                                 return 0;
3339                 }
3340                 if(! $fid)
3341                         $r = q("INSERT INTO `fcontact` ( `name`,`url`,`photo`,`request` ) VALUES ( '%s', '%s', '%s', '%s' ) ",
3342                         dbesc($fsugg['name']),
3343                         dbesc($fsugg['url']),
3344                         dbesc($fsugg['photo']),
3345                         dbesc($fsugg['request'])
3346                 );
3347                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3348                         dbesc($fsugg['url']),
3349                         dbesc($fsugg['name']),
3350                         dbesc($fsugg['request'])
3351                 );
3352                 if(count($r)) {
3353                         $fid = $r[0]['id'];
3354                 }
3355                 // database record did not get created. Quietly give up.
3356                 else
3357                         return 0;
3358
3359
3360                 $hash = random_string();
3361
3362                 $r = q("INSERT INTO `intro` ( `uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked` )
3363                         VALUES( %d, %d, %d, '%s', '%s', '%s', %d )",
3364                         intval($fsugg['uid']),
3365                         intval($fid),
3366                         intval($fsugg['cid']),
3367                         dbesc($fsugg['body']),
3368                         dbesc($hash),
3369                         dbesc(datetime_convert()),
3370                         intval(0)
3371                 );
3372
3373                 notification(array(
3374                         'type'         => NOTIFY_SUGGEST,
3375                         'notify_flags' => $importer['notify-flags'],
3376                         'language'     => $importer['language'],
3377                         'to_name'      => $importer['username'],
3378                         'to_email'     => $importer['email'],
3379                         'uid'          => $importer['importer_uid'],
3380                         'item'         => $fsugg,
3381                         'link'         => $a->get_baseurl() . '/notifications/intros',
3382                         'source_name'  => $importer['name'],
3383                         'source_link'  => $importer['url'],
3384                         'source_photo' => $importer['photo'],
3385                         'verb'         => ACTIVITY_REQ_FRIEND,
3386                         'otype'        => 'intro'
3387                 ));
3388
3389                 return 0;
3390         }
3391
3392         $ismail = false;
3393
3394         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
3395         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
3396
3397                 logger('local_delivery: private message received');
3398
3399                 $ismail = true;
3400                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
3401
3402                 $msg = array();
3403                 $msg['uid'] = $importer['importer_uid'];
3404                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
3405                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
3406                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
3407                 $msg['contact-id'] = $importer['id'];
3408                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
3409                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
3410                 $msg['seen'] = 0;
3411                 $msg['replied'] = 0;
3412                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
3413                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
3414                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
3415
3416                 dbesc_array($msg);
3417
3418                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
3419                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
3420
3421                 // send notifications.
3422
3423                 require_once('include/enotify.php');
3424
3425                 $notif_params = array(
3426                         'type' => NOTIFY_MAIL,
3427                         'notify_flags' => $importer['notify-flags'],
3428                         'language' => $importer['language'],
3429                         'to_name' => $importer['username'],
3430                         'to_email' => $importer['email'],
3431                         'uid' => $importer['importer_uid'],
3432                         'item' => $msg,
3433                         'source_name' => $msg['from-name'],
3434                         'source_link' => $importer['url'],
3435                         'source_photo' => $importer['thumb'],
3436                         'verb' => ACTIVITY_POST,
3437                         'otype' => 'mail'
3438                 );
3439
3440                 notification($notif_params);
3441                 return 0;
3442
3443                 // NOTREACHED
3444         }
3445
3446         $community_page = 0;
3447         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
3448         if($rawtags) {
3449                 $community_page = intval($rawtags[0]['data']);
3450         }
3451         if(intval($importer['forum']) != $community_page) {
3452                 q("update contact set forum = %d where id = %d",
3453                         intval($community_page),
3454                         intval($importer['id'])
3455                 );
3456                 $importer['forum'] = (string) $community_page;
3457         }
3458
3459         logger('local_delivery: feed item count = ' . $feed->get_item_quantity());
3460
3461         // process any deleted entries
3462
3463         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
3464         if(is_array($del_entries) && count($del_entries)) {
3465                 foreach($del_entries as $dentry) {
3466                         $deleted = false;
3467                         if(isset($dentry['attribs']['']['ref'])) {
3468                                 $uri = $dentry['attribs']['']['ref'];
3469                                 $deleted = true;
3470                                 if(isset($dentry['attribs']['']['when'])) {
3471                                         $when = $dentry['attribs']['']['when'];
3472                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
3473                                 }
3474                                 else
3475                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
3476                         }
3477                         if($deleted) {
3478
3479                                 // check for relayed deletes to our conversation
3480
3481                                 $is_reply = false;
3482                                 $r = q("select * from item where uri = '%s' and uid = %d limit 1",
3483                                         dbesc($uri),
3484                                         intval($importer['importer_uid'])
3485                                 );
3486                                 if(count($r)) {
3487                                         $parent_uri = $r[0]['parent-uri'];
3488                                         if($r[0]['id'] != $r[0]['parent'])
3489                                                 $is_reply = true;
3490                                 }
3491
3492                                 if($is_reply) {
3493                                         $community = false;
3494
3495                                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3496                                                 $sql_extra = '';
3497                                                 $community = true;
3498                                                 logger('local_delivery: possible community delete');
3499                                         }
3500                                         else
3501                                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3502
3503                                         // was the top-level post for this reply written by somebody on this site?
3504                                         // Specifically, the recipient?
3505
3506                                         $is_a_remote_delete = false;
3507
3508                                         // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3509                                         $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3510                                                 `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3511                                                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3512                                                 WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3513                                                 AND `item`.`uid` = %d
3514                                                 $sql_extra
3515                                                 LIMIT 1",
3516                                                 dbesc($parent_uri),
3517                                                 dbesc($parent_uri),
3518                                                 dbesc($parent_uri),
3519                                                 intval($importer['importer_uid'])
3520                                         );
3521                                         if($r && count($r))
3522                                                 $is_a_remote_delete = true;
3523
3524                                         // Does this have the characteristics of a community or private group comment?
3525                                         // If it's a reply to a wall post on a community/prvgroup page it's a
3526                                         // valid community comment. Also forum_mode makes it valid for sure.
3527                                         // If neither, it's not.
3528
3529                                         if($is_a_remote_delete && $community) {
3530                                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3531                                                         $is_a_remote_delete = false;
3532                                                         logger('local_delivery: not a community delete');
3533                                                 }
3534                                         }
3535
3536                                         if($is_a_remote_delete) {
3537                                                 logger('local_delivery: received remote delete');
3538                                         }
3539                                 }
3540
3541                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN contact on `item`.`contact-id` = `contact`.`id`
3542                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
3543                                         dbesc($uri),
3544                                         intval($importer['importer_uid']),
3545                                         intval($importer['id'])
3546                                 );
3547
3548                                 if(count($r)) {
3549                                         $item = $r[0];
3550
3551                                         if($item['deleted'])
3552                                                 continue;
3553
3554                                         logger('local_delivery: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
3555
3556                                         if($item['object-type'] === ACTIVITY_OBJ_EVENT) {
3557                                                 logger("Deleting event ".$item['event-id'], LOGGER_DEBUG);
3558                                                 event_delete($item['event-id']);
3559                                         }
3560
3561                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3562                                                 $xo = parse_xml_string($item['object'],false);
3563                                                 $xt = parse_xml_string($item['target'],false);
3564
3565                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
3566                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
3567                                                                 dbesc($xt->id),
3568                                                                 intval($importer['importer_uid'])
3569                                                         );
3570                                                         if(count($i)) {
3571
3572                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
3573
3574                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
3575                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
3576                                                                 $author_copy = (($item['origin']) ? true : false);
3577
3578                                                                 if($owner_remove && $author_copy)
3579                                                                         continue;
3580                                                                 if($author_remove || $owner_remove) {
3581                                                                         $tags = explode(',',$i[0]['tag']);
3582                                                                         $newtags = array();
3583                                                                         if(count($tags)) {
3584                                                                                 foreach($tags as $tag)
3585                                                                                         if(trim($tag) !== trim($xo->body))
3586                                                                                                 $newtags[] = trim($tag);
3587                                                                         }
3588                                                                         q("update item set tag = '%s' where id = %d",
3589                                                                                 dbesc(implode(',',$newtags)),
3590                                                                                 intval($i[0]['id'])
3591                                                                         );
3592                                                                         create_tags_from_item($i[0]['id']);
3593                                                                 }
3594                                                         }
3595                                                 }
3596                                         }
3597
3598                                         if($item['uri'] == $item['parent-uri']) {
3599                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3600                                                         `body` = '', `title` = ''
3601                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
3602                                                         dbesc($when),
3603                                                         dbesc(datetime_convert()),
3604                                                         dbesc($item['uri']),
3605                                                         intval($importer['importer_uid'])
3606                                                 );
3607                                                 create_tags_from_itemuri($item['uri'], $importer['importer_uid']);
3608                                                 create_files_from_itemuri($item['uri'], $importer['importer_uid']);
3609                                                 update_thread_uri($item['uri'], $importer['importer_uid']);
3610                                         }
3611                                         else {
3612                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3613                                                         `body` = '', `title` = ''
3614                                                         WHERE `uri` = '%s' AND `uid` = %d",
3615                                                         dbesc($when),
3616                                                         dbesc(datetime_convert()),
3617                                                         dbesc($uri),
3618                                                         intval($importer['importer_uid'])
3619                                                 );
3620                                                 create_tags_from_itemuri($uri, $importer['importer_uid']);
3621                                                 create_files_from_itemuri($uri, $importer['importer_uid']);
3622                                                 update_thread_uri($uri, $importer['importer_uid']);
3623                                                 if($item['last-child']) {
3624                                                         // ensure that last-child is set in case the comment that had it just got wiped.
3625                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
3626                                                                 dbesc(datetime_convert()),
3627                                                                 dbesc($item['parent-uri']),
3628                                                                 intval($item['uid'])
3629                                                         );
3630                                                         // who is the last child now?
3631                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
3632                                                                 ORDER BY `created` DESC LIMIT 1",
3633                                                                         dbesc($item['parent-uri']),
3634                                                                         intval($importer['importer_uid'])
3635                                                         );
3636                                                         if(count($r)) {
3637                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
3638                                                                         intval($r[0]['id'])
3639                                                                 );
3640                                                         }
3641                                                 }
3642                                                 // if this is a relayed delete, propagate it to other recipients
3643
3644                                                 if($is_a_remote_delete)
3645                                                         proc_run('php',"include/notifier.php","drop",$item['id']);
3646                                         }
3647                                 }
3648                         }
3649                 }
3650         }
3651
3652
3653         foreach($feed->get_items() as $item) {
3654
3655                 $is_reply = false;
3656                 $item_id = $item->get_id();
3657                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
3658                 if(isset($rawthread[0]['attribs']['']['ref'])) {
3659                         $is_reply = true;
3660                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
3661                 }
3662
3663                 if($is_reply) {
3664                         $community = false;
3665
3666                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3667                                 $sql_extra = '';
3668                                 $community = true;
3669                                 logger('local_delivery: possible community reply');
3670                         }
3671                         else
3672                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3673
3674                         // was the top-level post for this reply written by somebody on this site?
3675                         // Specifically, the recipient?
3676
3677                         $is_a_remote_comment = false;
3678                         $top_uri = $parent_uri;
3679
3680                         $r = q("select `item`.`parent-uri` from `item`
3681                                 WHERE `item`.`uri` = '%s'
3682                                 LIMIT 1",
3683                                 dbesc($parent_uri)
3684                         );
3685                         if($r && count($r)) {
3686                                 $top_uri = $r[0]['parent-uri'];
3687
3688                                 // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3689                                 $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3690                                         `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3691                                         INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3692                                         WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3693                                         AND `item`.`uid` = %d
3694                                         $sql_extra
3695                                         LIMIT 1",
3696                                         dbesc($top_uri),
3697                                         dbesc($top_uri),
3698                                         dbesc($top_uri),
3699                                         intval($importer['importer_uid'])
3700                                 );
3701                                 if($r && count($r))
3702                                         $is_a_remote_comment = true;
3703                         }
3704
3705                         // Does this have the characteristics of a community or private group comment?
3706                         // If it's a reply to a wall post on a community/prvgroup page it's a
3707                         // valid community comment. Also forum_mode makes it valid for sure.
3708                         // If neither, it's not.
3709
3710                         if($is_a_remote_comment && $community) {
3711                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3712                                         $is_a_remote_comment = false;
3713                                         logger('local_delivery: not a community reply');
3714                                 }
3715                         }
3716
3717                         if($is_a_remote_comment) {
3718                                 logger('local_delivery: received remote comment');
3719                                 $is_like = false;
3720                                 // remote reply to our post. Import and then notify everybody else.
3721
3722                                 $datarray = get_atom_elements($feed, $item);
3723
3724                                 $r = q("SELECT `id`, `uid`, `last-child`, `edited`, `body`  FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3725                                         dbesc($item_id),
3726                                         intval($importer['importer_uid'])
3727                                 );
3728
3729                                 // Update content if 'updated' changes
3730
3731                                 if(count($r)) {
3732                                         $iid = $r[0]['id'];
3733                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3734
3735                                                 // do not accept (ignore) an earlier edit than one we currently have.
3736                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3737                                                         continue;
3738
3739                                                 logger('received updated comment' , LOGGER_DEBUG);
3740                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3741                                                         dbesc($datarray['title']),
3742                                                         dbesc($datarray['body']),
3743                                                         dbesc($datarray['tag']),
3744                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3745                                                         dbesc(datetime_convert()),
3746                                                         dbesc($item_id),
3747                                                         intval($importer['importer_uid'])
3748                                                 );
3749                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3750
3751                                                 proc_run('php',"include/notifier.php","comment-import",$iid);
3752
3753                                         }
3754
3755                                         continue;
3756                                 }
3757
3758
3759
3760                                 $own = q("select name,url,thumb from contact where uid = %d and self = 1 limit 1",
3761                                         intval($importer['importer_uid'])
3762                                 );
3763
3764
3765                                 $datarray['type'] = 'remote-comment';
3766                                 $datarray['wall'] = 1;
3767                                 $datarray['parent-uri'] = $parent_uri;
3768                                 $datarray['uid'] = $importer['importer_uid'];
3769                                 $datarray['owner-name'] = $own[0]['name'];
3770                                 $datarray['owner-link'] = $own[0]['url'];
3771                                 $datarray['owner-avatar'] = $own[0]['thumb'];
3772                                 $datarray['contact-id'] = $importer['id'];
3773
3774                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3775                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3776                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3777                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3778                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3779                                         $is_like = true;
3780                                         $datarray['type'] = 'activity';
3781                                         $datarray['gravity'] = GRAVITY_LIKE;
3782                                         $datarray['last-child'] = 0;
3783                                         // only one like or dislike per person
3784                                         // splitted into two queries for performance issues
3785                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`parent-uri` = '%s') and deleted = 0 limit 1",
3786                                                 intval($datarray['uid']),
3787                                                 intval($datarray['contact-id']),
3788                                                 dbesc($datarray['verb']),
3789                                                 dbesc($datarray['parent-uri'])
3790
3791                                         );
3792                                         if($r && count($r))
3793                                                 continue;
3794
3795                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`thr-parent` = '%s') and deleted = 0 limit 1",
3796                                                 intval($datarray['uid']),
3797                                                 intval($datarray['contact-id']),
3798                                                 dbesc($datarray['verb']),
3799                                                 dbesc($datarray['parent-uri'])
3800
3801                                         );
3802                                         if($r && count($r))
3803                                                 continue;
3804                                 }
3805
3806                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3807
3808                                         $xo = parse_xml_string($datarray['object'],false);
3809                                         $xt = parse_xml_string($datarray['target'],false);
3810
3811                                         if(($xt->type == ACTIVITY_OBJ_NOTE) && ($xt->id)) {
3812
3813                                                 // fetch the parent item
3814
3815                                                 $tagp = q("select * from item where uri = '%s' and uid = %d limit 1",
3816                                                         dbesc($xt->id),
3817                                                         intval($importer['importer_uid'])
3818                                                 );
3819                                                 if(! count($tagp))
3820                                                         continue;
3821
3822                                                 // extract tag, if not duplicate, and this user allows tags, add to parent item
3823
3824                                                 if($xo->id && $xo->content) {
3825                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
3826                                                         if(! (stristr($tagp[0]['tag'],$newtag))) {
3827                                                                 $i = q("SELECT `blocktags` FROM `user` where `uid` = %d LIMIT 1",
3828                                                                         intval($importer['importer_uid'])
3829                                                                 );
3830                                                                 if(count($i) && ! intval($i[0]['blocktags'])) {
3831                                                                         q("UPDATE item SET tag = '%s', `edited` = '%s', `changed` = '%s' WHERE id = %d",
3832                                                                                 dbesc($tagp[0]['tag'] . (strlen($tagp[0]['tag']) ? ',' : '') . $newtag),
3833                                                                                 intval($tagp[0]['id']),
3834                                                                                 dbesc(datetime_convert()),
3835                                                                                 dbesc(datetime_convert())
3836                                                                         );
3837                                                                         create_tags_from_item($tagp[0]['id']);
3838                                                                 }
3839                                                         }
3840                                                 }
3841                                         }
3842                                 }
3843
3844
3845                                 $posted_id = item_store($datarray);
3846                                 $parent = 0;
3847
3848                                 if($posted_id) {
3849
3850                                         $datarray["id"] = $posted_id;
3851
3852                                         $r = q("SELECT `parent`, `parent-uri` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3853                                                 intval($posted_id),
3854                                                 intval($importer['importer_uid'])
3855                                         );
3856                                         if(count($r)) {
3857                                                 $parent = $r[0]['parent'];
3858                                                 $parent_uri = $r[0]['parent-uri'];
3859                                         }
3860
3861                                         if(! $is_like) {
3862                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
3863                                                         dbesc(datetime_convert()),
3864                                                         intval($importer['importer_uid']),
3865                                                         intval($r[0]['parent'])
3866                                                 );
3867
3868                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d",
3869                                                         dbesc(datetime_convert()),
3870                                                         intval($importer['importer_uid']),
3871                                                         intval($posted_id)
3872                                                 );
3873                                         }
3874
3875                                         if($posted_id && $parent) {
3876
3877                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
3878
3879                                                 if((! $is_like) && (! $importer['self'])) {
3880
3881                                                         require_once('include/enotify.php');
3882
3883                                                         notification(array(
3884                                                                 'type'         => NOTIFY_COMMENT,
3885                                                                 'notify_flags' => $importer['notify-flags'],
3886                                                                 'language'     => $importer['language'],
3887                                                                 'to_name'      => $importer['username'],
3888                                                                 'to_email'     => $importer['email'],
3889                                                                 'uid'          => $importer['importer_uid'],
3890                                                                 'item'         => $datarray,
3891                                                                 'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
3892                                                                 'source_name'  => stripslashes($datarray['author-name']),
3893                                                                 'source_link'  => $datarray['author-link'],
3894                                                                 'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
3895                                                                         ? $importer['thumb'] : $datarray['author-avatar']),
3896                                                                 'verb'         => ACTIVITY_POST,
3897                                                                 'otype'        => 'item',
3898                                                                 'parent'       => $parent,
3899                                                                 'parent_uri'   => $parent_uri,
3900                                                         ));
3901
3902                                                 }
3903                                         }
3904
3905                                         return 0;
3906                                         // NOTREACHED
3907                                 }
3908                         }
3909                         else {
3910
3911                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
3912
3913                                 $item_id  = $item->get_id();
3914                                 $datarray = get_atom_elements($feed,$item);
3915
3916                                 if($importer['rel'] == CONTACT_IS_FOLLOWER)
3917                                         continue;
3918
3919                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3920                                         dbesc($item_id),
3921                                         intval($importer['importer_uid'])
3922                                 );
3923
3924                                 // Update content if 'updated' changes
3925
3926                                 if(count($r)) {
3927                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3928
3929                                                 // do not accept (ignore) an earlier edit than one we currently have.
3930                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3931                                                         continue;
3932
3933                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3934                                                         dbesc($datarray['title']),
3935                                                         dbesc($datarray['body']),
3936                                                         dbesc($datarray['tag']),
3937                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3938                                                         dbesc(datetime_convert()),
3939                                                         dbesc($item_id),
3940                                                         intval($importer['importer_uid'])
3941                                                 );
3942                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3943                                         }
3944
3945                                         // update last-child if it changes
3946
3947                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
3948                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
3949                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
3950                                                         dbesc(datetime_convert()),
3951                                                         dbesc($parent_uri),
3952                                                         intval($importer['importer_uid'])
3953                                                 );
3954                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
3955                                                         intval($allow[0]['data']),
3956                                                         dbesc(datetime_convert()),
3957                                                         dbesc($item_id),
3958                                                         intval($importer['importer_uid'])
3959                                                 );
3960                                         }
3961                                         continue;
3962                                 }
3963
3964                                 $datarray['parent-uri'] = $parent_uri;
3965                                 $datarray['uid'] = $importer['importer_uid'];
3966                                 $datarray['contact-id'] = $importer['id'];
3967                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3968                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3969                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3970                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3971                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3972                                         $datarray['type'] = 'activity';
3973                                         $datarray['gravity'] = GRAVITY_LIKE;
3974                                         // only one like or dislike per person
3975                                         // splitted into two queries for performance issues
3976                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
3977                                                 intval($datarray['uid']),
3978                                                 intval($datarray['contact-id']),
3979                                                 dbesc($datarray['verb']),
3980                                                 dbesc($parent_uri)
3981                                         );
3982                                         if($r && count($r))
3983                                                 continue;
3984
3985                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
3986                                                 intval($datarray['uid']),
3987                                                 intval($datarray['contact-id']),
3988                                                 dbesc($datarray['verb']),
3989                                                 dbesc($parent_uri)
3990                                         );
3991                                         if($r && count($r))
3992                                                 continue;
3993
3994                                 }
3995
3996                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3997
3998                                         $xo = parse_xml_string($datarray['object'],false);
3999                                         $xt = parse_xml_string($datarray['target'],false);
4000
4001                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
4002                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
4003                                                         dbesc($xt->id),
4004                                                         intval($importer['importer_uid'])
4005                                                 );
4006                                                 if(! count($r))
4007                                                         continue;
4008
4009                                                 // extract tag, if not duplicate, add to parent item
4010                                                 if($xo->content) {
4011                                                         if(! (stristr($r[0]['tag'],trim($xo->content)))) {
4012                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
4013                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
4014                                                                         intval($r[0]['id'])
4015                                                                 );
4016                                                                 create_tags_from_item($r[0]['id']);
4017                                                         }
4018                                                 }
4019                                         }
4020                                 }
4021
4022                                 $posted_id = item_store($datarray);
4023
4024                                 // find out if our user is involved in this conversation and wants to be notified.
4025
4026                                 if(!x($datarray['type']) || $datarray['type'] != 'activity') {
4027
4028                                         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0",
4029                                                 dbesc($top_uri),
4030                                                 intval($importer['importer_uid'])
4031                                         );
4032
4033                                         if(count($myconv)) {
4034                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
4035
4036                                                 // first make sure this isn't our own post coming back to us from a wall-to-wall event
4037                                                 if(! link_compare($datarray['author-link'],$importer_url)) {
4038
4039
4040                                                         foreach($myconv as $conv) {
4041
4042                                                                 // now if we find a match, it means we're in this conversation
4043
4044                                                                 if(! link_compare($conv['author-link'],$importer_url))
4045                                                                         continue;
4046
4047                                                                 require_once('include/enotify.php');
4048
4049                                                                 $conv_parent = $conv['parent'];
4050
4051                                                                 notification(array(
4052                                                                         'type'         => NOTIFY_COMMENT,
4053                                                                         'notify_flags' => $importer['notify-flags'],
4054                                                                         'language'     => $importer['language'],
4055                                                                         'to_name'      => $importer['username'],
4056                                                                         'to_email'     => $importer['email'],
4057                                                                         'uid'          => $importer['importer_uid'],
4058                                                                         'item'         => $datarray,
4059                                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4060                                                                         'source_name'  => stripslashes($datarray['author-name']),
4061                                                                         'source_link'  => $datarray['author-link'],
4062                                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4063                                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4064                                                                         'verb'         => ACTIVITY_POST,
4065                                                                         'otype'        => 'item',
4066                                                                         'parent'       => $conv_parent,
4067                                                                         'parent_uri'   => $parent_uri
4068
4069                                                                 ));
4070
4071                                                                 // only send one notification
4072                                                                 break;
4073                                                         }
4074                                                 }
4075                                         }
4076                                 }
4077                                 continue;
4078                         }
4079                 }
4080
4081                 else {
4082
4083                         // Head post of a conversation. Have we seen it? If not, import it.
4084
4085
4086                         $item_id  = $item->get_id();
4087                         $datarray = get_atom_elements($feed,$item);
4088
4089                         if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
4090                                 $ev = bbtoevent($datarray['body']);
4091                                 if((x($ev,'desc') || x($ev,'summary')) && x($ev,'start')) {
4092                                         $ev['cid'] = $importer['id'];
4093                                         $ev['uid'] = $importer['uid'];
4094                                         $ev['uri'] = $item_id;
4095                                         $ev['edited'] = $datarray['edited'];
4096                                         $ev['private'] = $datarray['private'];
4097                                         $ev['guid'] = $datarray['guid'];
4098
4099                                         $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4100                                                 dbesc($item_id),
4101                                                 intval($importer['uid'])
4102                                         );
4103                                         if(count($r))
4104                                                 $ev['id'] = $r[0]['id'];
4105                                         $xyz = event_store($ev);
4106                                         continue;
4107                                 }
4108                         }
4109
4110                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4111                                 dbesc($item_id),
4112                                 intval($importer['importer_uid'])
4113                         );
4114
4115                         // Update content if 'updated' changes
4116
4117                         if(count($r)) {
4118                                 if (edited_timestamp_is_newer($r[0], $datarray)) {
4119
4120                                         // do not accept (ignore) an earlier edit than one we currently have.
4121                                         if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
4122                                                 continue;
4123
4124                                         $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4125                                                 dbesc($datarray['title']),
4126                                                 dbesc($datarray['body']),
4127                                                 dbesc($datarray['tag']),
4128                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
4129                                                 dbesc(datetime_convert()),
4130                                                 dbesc($item_id),
4131                                                 intval($importer['importer_uid'])
4132                                         );
4133                                         create_tags_from_itemuri($item_id, $importer['importer_uid']);
4134                                         update_thread_uri($item_id, $importer['importer_uid']);
4135                                 }
4136
4137                                 // update last-child if it changes
4138
4139                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
4140                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
4141                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4142                                                 intval($allow[0]['data']),
4143                                                 dbesc(datetime_convert()),
4144                                                 dbesc($item_id),
4145                                                 intval($importer['importer_uid'])
4146                                         );
4147                                 }
4148                                 continue;
4149                         }
4150
4151                         $datarray['parent-uri'] = $item_id;
4152                         $datarray['uid'] = $importer['importer_uid'];
4153                         $datarray['contact-id'] = $importer['id'];
4154
4155
4156                         if(! link_compare($datarray['owner-link'],$importer['url'])) {
4157                                 // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
4158                                 // but otherwise there's a possible data mixup on the sender's system.
4159                                 // the tgroup delivery code called from item_store will correct it if it's a forum,
4160                                 // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
4161                                 logger('local_delivery: Correcting item owner.', LOGGER_DEBUG);
4162                                 $datarray['owner-name']   = $importer['senderName'];
4163                                 $datarray['owner-link']   = $importer['url'];
4164                                 $datarray['owner-avatar'] = $importer['thumb'];
4165                         }
4166
4167                         if(($importer['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['importer_uid'],$datarray)))
4168                                 continue;
4169
4170                         // This is my contact on another system, but it's really me.
4171                         // Turn this into a wall post.
4172                         $notify = item_is_remote_self($importer, $datarray);
4173
4174                         $posted_id = item_store($datarray, false, $notify);
4175
4176                         if(stristr($datarray['verb'],ACTIVITY_POKE)) {
4177                                 $verb = urldecode(substr($datarray['verb'],strpos($datarray['verb'],'#')+1));
4178                                 if(! $verb)
4179                                         continue;
4180                                 $xo = parse_xml_string($datarray['object'],false);
4181
4182                                 if(($xo->type == ACTIVITY_OBJ_PERSON) && ($xo->id)) {
4183
4184                                         // somebody was poked/prodded. Was it me?
4185
4186                                         $links = parse_xml_string("<links>".unxmlify($xo->link)."</links>",false);
4187
4188                                 foreach($links->link as $l) {
4189                                 $atts = $l->attributes();
4190                                 switch($atts['rel']) {
4191                                         case "alternate":
4192                                                                 $Blink = $atts['href'];
4193                                                                 break;
4194                                                         default:
4195                                                                 break;
4196                                     }
4197                                 }
4198                                         if($Blink && link_compare($Blink,$a->get_baseurl() . '/profile/' . $importer['nickname'])) {
4199
4200                                                 // send a notification
4201                                                 require_once('include/enotify.php');
4202
4203                                                 notification(array(
4204                                                         'type'         => NOTIFY_POKE,
4205                                                         'notify_flags' => $importer['notify-flags'],
4206                                                         'language'     => $importer['language'],
4207                                                         'to_name'      => $importer['username'],
4208                                                         'to_email'     => $importer['email'],
4209                                                         'uid'          => $importer['importer_uid'],
4210                                                         'item'         => $datarray,
4211                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4212                                                         'source_name'  => stripslashes($datarray['author-name']),
4213                                                         'source_link'  => $datarray['author-link'],
4214                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4215                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4216                                                         'verb'         => $datarray['verb'],
4217                                                         'otype'        => 'person',
4218                                                         'activity'     => $verb,
4219                                                         'parent'       => $datarray['parent']
4220                                                 ));
4221                                         }
4222                                 }
4223                         }
4224
4225                         continue;
4226                 }
4227         }
4228
4229         return 0;
4230         // NOTREACHED
4231
4232 }
4233
4234
4235 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
4236         $url = notags(trim($datarray['author-link']));
4237         $name = notags(trim($datarray['author-name']));
4238         $photo = notags(trim($datarray['author-avatar']));
4239
4240         if (is_object($item)) {
4241                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
4242                 if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
4243                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
4244         } else
4245                 $nick = $item;
4246
4247         if(is_array($contact)) {
4248                 if(($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
4249                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
4250                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
4251                                 intval(CONTACT_IS_FRIEND),
4252                                 intval($contact['id']),
4253                                 intval($importer['uid'])
4254                         );
4255                 }
4256                 // send email notification to owner?
4257         }
4258         else {
4259
4260                 // create contact record
4261
4262                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
4263                         `blocked`, `readonly`, `pending`, `writable` )
4264                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
4265                         intval($importer['uid']),
4266                         dbesc(datetime_convert()),
4267                         dbesc($url),
4268                         dbesc(normalise_link($url)),
4269                         dbesc($name),
4270                         dbesc($nick),
4271                         dbesc($photo),
4272                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
4273                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
4274                 );
4275                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
4276                                 intval($importer['uid']),
4277                                 dbesc($url)
4278                 );
4279                 if(count($r))
4280                                 $contact_record = $r[0];
4281
4282                 // create notification
4283                 $hash = random_string();
4284
4285                 if(is_array($contact_record)) {
4286                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
4287                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
4288                                 intval($importer['uid']),
4289                                 intval($contact_record['id']),
4290                                 dbesc($hash),
4291                                 dbesc(datetime_convert())
4292                         );
4293                 }
4294
4295                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
4296                         intval($importer['uid'])
4297                 );
4298                 $a = get_app();
4299                 if(count($r)) {
4300
4301                         if(intval($r[0]['def_gid'])) {
4302                                 require_once('include/group.php');
4303                                 group_add_member($r[0]['uid'],'',$contact_record['id'],$r[0]['def_gid']);
4304                         }
4305
4306                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) &&
4307                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE))) {
4308
4309                                 notification(array(
4310                                         'type'         => NOTIFY_INTRO,
4311                                         'notify_flags' => $r[0]['notify-flags'],
4312                                         'language'     => $r[0]['language'],
4313                                         'to_name'      => $r[0]['username'],
4314                                         'to_email'     => $r[0]['email'],
4315                                         'uid'          => $r[0]['uid'],
4316                                         'link'             => $a->get_baseurl() . '/notifications/intro',
4317                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
4318                                         'source_link'  => $contact_record['url'],
4319                                         'source_photo' => $contact_record['photo'],
4320                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
4321                                         'otype'        => 'intro'
4322                                 ));
4323
4324                         }
4325                 }
4326         }
4327 }
4328
4329 function lose_follower($importer,$contact,$datarray,$item) {
4330
4331         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
4332                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4333                         intval(CONTACT_IS_SHARING),
4334                         intval($contact['id'])
4335                 );
4336         }
4337         else {
4338                 contact_remove($contact['id']);
4339         }
4340 }
4341
4342 function lose_sharer($importer,$contact,$datarray,$item) {
4343
4344         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
4345                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4346                         intval(CONTACT_IS_FOLLOWER),
4347                         intval($contact['id'])
4348                 );
4349         }
4350         else {
4351                 contact_remove($contact['id']);
4352         }
4353 }
4354
4355
4356 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
4357
4358         $a = get_app();
4359
4360         if(is_array($importer)) {
4361                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
4362                         intval($importer['uid'])
4363                 );
4364         }
4365
4366         // Diaspora has different message-ids in feeds than they do
4367         // through the direct Diaspora protocol. If we try and use
4368         // the feed, we'll get duplicates. So don't.
4369
4370         if((! count($r)) || $contact['network'] === NETWORK_DIASPORA)
4371                 return;
4372
4373         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
4374
4375         // Use a single verify token, even if multiple hubs
4376
4377         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
4378
4379         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
4380
4381         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
4382
4383         if(!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
4384                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
4385                         dbesc($verify_token),
4386                         intval($contact['id'])
4387                 );
4388         }
4389
4390         post_url($url,$params);
4391
4392         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
4393
4394         return;
4395
4396 }
4397
4398
4399 function atom_author($tag,$name,$uri,$h,$w,$photo,$geo) {
4400         $o = '';
4401         if(! $tag)
4402                 return $o;
4403         $name = xmlify($name);
4404         $uri = xmlify($uri);
4405         $h = intval($h);
4406         $w = intval($w);
4407         $photo = xmlify($photo);
4408
4409
4410         $o .= "<$tag>\r\n";
4411         $o .= "\t<name>$name</name>\r\n";
4412         $o .= "\t<uri>$uri</uri>\r\n";
4413         $o .= "\t".'<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4414         $o .= "\t".'<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4415
4416         if ($tag == "author") {
4417
4418                 if($geo)
4419                         $o .= '<georss:point>'.xmlify($geo).'</georss:point>'."\r\n";
4420
4421                 $r = q("SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
4422                                 `profile`.`name`, `profile`.`pub_keywords`, `profile`.`about`,
4423                                 `profile`.`homepage`,`contact`.`nick` FROM `profile`
4424                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
4425                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
4426                                 WHERE `profile`.`is-default` AND `contact`.`self` AND
4427                                         NOT `user`.`hidewall` AND `contact`.`nurl`='%s'",
4428                         dbesc(normalise_link($uri)));
4429                 if ($r) {
4430                         $location = '';
4431                         if($r[0]['locality'])
4432                                 $location .= $r[0]['locality'];
4433                         if($r[0]['region']) {
4434                                 if($location)
4435                                         $location .= ', ';
4436                                 $location .= $r[0]['region'];
4437                         }
4438                         if($r[0]['country-name']) {
4439                                 if($location)
4440                                         $location .= ', ';
4441                                 $location .= $r[0]['country-name'];
4442                         }
4443
4444                         $o .= "\t<poco:preferredUsername>".xmlify($r[0]["nick"])."</poco:preferredUsername>\r\n";
4445                         $o .= "\t<poco:displayName>".xmlify($r[0]["name"])."</poco:displayName>\r\n";
4446                         $o .= "\t<poco:note>".xmlify($r[0]["about"])."</poco:note>\r\n";
4447                         $o .= "\t<poco:address>\r\n";
4448                         $o .= "\t\t<poco:formatted>".xmlify($location)."</poco:formatted>\r\n";
4449                         $o .= "\t</poco:address>\r\n";
4450                         $o .= "\t<poco:urls>\r\n";
4451                         $o .= "\t<poco:type>homepage</poco:type>\r\n";
4452                         $o .= "\t\t<poco:value>".xmlify($r[0]["homepage"])."</poco:value>\r\n";
4453                         $o .= "\t\t<poco:primary>true</poco:primary>\r\n";
4454                         $o .= "\t</poco:urls>\r\n";
4455                 }
4456         }
4457
4458         call_hooks('atom_author', $o);
4459
4460         $o .= "</$tag>\r\n";
4461         return $o;
4462 }
4463
4464 function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
4465
4466         $a = get_app();
4467
4468         if(! $item['parent'])
4469                 return;
4470
4471         if($item['deleted'])
4472                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
4473
4474
4475         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
4476                 $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid);
4477         else
4478                 $body = $item['body'];
4479
4480
4481         $o = "\r\n\r\n<entry>\r\n";
4482
4483         if(is_array($author))
4484                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb'], $item['coord']);
4485         else
4486                 $o .= atom_author('author',(($item['author-name']) ? $item['author-name'] : $item['name']),(($item['author-link']) ? $item['author-link'] : $item['url']),80,80,(($item['author-avatar']) ? $item['author-avatar'] : $item['thumb']), $item['coord']);
4487         if(strlen($item['owner-name']))
4488                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar'], $item['coord']);
4489
4490         if(($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
4491                 $parent = q("SELECT `guid` FROM `item` WHERE `id` = %d", intval($item["parent"]));
4492                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
4493                 $o .= '<thr:in-reply-to ref="'.xmlify($parent_item).'" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$parent[0]['guid']).'" />'."\r\n";
4494         }
4495
4496         $htmlbody = $body;
4497
4498         if ($item['title'] != "")
4499                 $htmlbody = "[b]".$item['title']."[/b]\n\n".$htmlbody;
4500
4501         $htmlbody = bbcode($htmlbody, false, false, 7);
4502
4503         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
4504         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
4505         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
4506         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
4507         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
4508         $o .= '<content type="' . $type . '" >' . xmlify((($type === 'html') ? $htmlbody : $body)) . '</content>' . "\r\n";
4509         $o .= '<link rel="alternate" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$item['guid']).'" />'."\r\n";
4510
4511         $o .= '<status_net notice_id="'.$item['id'].'"></status_net>'."\r\n";
4512
4513         if($comment)
4514                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
4515
4516         if($item['location']) {
4517                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
4518                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
4519         }
4520
4521         if($item['coord'])
4522                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
4523
4524         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
4525                 $o .= '<dfrn:private>' . (($item['private']) ? $item['private'] : 1) . '</dfrn:private>' . "\r\n";
4526
4527         if($item['extid'])
4528                 $o .= '<dfrn:extid>' . xmlify($item['extid']) . '</dfrn:extid>' . "\r\n";
4529         if($item['bookmark'])
4530                 $o .= '<dfrn:bookmark>true</dfrn:bookmark>' . "\r\n";
4531
4532         if($item['app'])
4533                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
4534
4535         if($item['guid'])
4536                 $o .= '<dfrn:diaspora_guid>' . $item['guid'] . '</dfrn:diaspora_guid>' . "\r\n";
4537
4538         if($item['signed_text']) {
4539                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
4540                 $o .= '<dfrn:diaspora_signature>' . xmlify($sign) . '</dfrn:diaspora_signature>' . "\r\n";
4541         }
4542
4543         $verb = construct_verb($item);
4544         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
4545         $actobj = construct_activity_object($item);
4546         if(strlen($actobj))
4547                 $o .= $actobj;
4548         $actarg = construct_activity_target($item);
4549         if(strlen($actarg))
4550                 $o .= $actarg;
4551
4552         $tags = item_getfeedtags($item);
4553         if(count($tags)) {
4554                 foreach($tags as $t)
4555                         if (($type != 'html') OR ($t[0] != "@"))
4556                                 $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
4557         }
4558
4559         // To-Do:
4560         // To support these elements, the API needs to be enhanced
4561         //$o .= '<link rel="ostatus:conversation" href="'.xmlify($a->get_baseurl().'/display/'.$owner['nickname'].'/'.$item['parent']).'"/>'."\r\n";
4562         //$o .= "\t".'<link rel="self" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4563         //$o .= "\t".'<link rel="edit" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4564
4565         $o .= item_get_attachment($item);
4566
4567         $o .= item_getfeedattach($item);
4568
4569         $mentioned = get_mentions($item);
4570         if($mentioned)
4571                 $o .= $mentioned;
4572
4573         call_hooks('atom_entry', $o);
4574
4575         $o .= '</entry>' . "\r\n";
4576
4577         return $o;
4578 }
4579
4580 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
4581
4582         if(get_config('system','disable_embedded'))
4583                 return $s;
4584
4585         $a = get_app();
4586
4587         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
4588         $site = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://'));
4589
4590         $orig_body = $s;
4591         $new_body = '';
4592
4593         $img_start = strpos($orig_body, '[img');
4594         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4595         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4596         while( ($img_st_close !== false) && ($img_len !== false) ) {
4597
4598                 $img_st_close++; // make it point to AFTER the closing bracket
4599                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
4600
4601                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
4602
4603
4604                 if(stristr($image , $site . '/photo/')) {
4605                         // Only embed locally hosted photos
4606                         $replace = false;
4607                         $i = basename($image);
4608                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
4609                         $x = strpos($i,'-');
4610
4611                         if($x) {
4612                                 $res = substr($i,$x+1);
4613                                 $i = substr($i,0,$x);
4614                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
4615                                         dbesc($i),
4616                                         intval($res),
4617                                         intval($uid)
4618                                 );
4619                                 if($r) {
4620
4621                                         // Check to see if we should replace this photo link with an embedded image
4622                                         // 1. No need to do so if the photo is public
4623                                         // 2. If there's a contact-id provided, see if they're in the access list
4624                                         //    for the photo. If so, embed it.
4625                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
4626                                         //    permissions, regardless of order but first check to see if they're an exact
4627                                         //    match to save some processing overhead.
4628
4629                                         if(has_permissions($r[0])) {
4630                                                 if($cid) {
4631                                                         $recips = enumerate_permissions($r[0]);
4632                                                         if(in_array($cid, $recips)) {
4633                                                                 $replace = true;
4634                                                         }
4635                                                 }
4636                                                 elseif($item) {
4637                                                         if(compare_permissions($item,$r[0]))
4638                                                                 $replace = true;
4639                                                 }
4640                                         }
4641                                         if($replace) {
4642                                                 $data = $r[0]['data'];
4643                                                 $type = $r[0]['type'];
4644
4645                                                 // If a custom width and height were specified, apply before embedding
4646                                                 if(preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
4647                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
4648
4649                                                         $width = intval($match[1]);
4650                                                         $height = intval($match[2]);
4651
4652                                                         $ph = new Photo($data, $type);
4653                                                         if($ph->is_valid()) {
4654                                                                 $ph->scaleImage(max($width, $height));
4655                                                                 $data = $ph->imageString();
4656                                                                 $type = $ph->getType();
4657                                                         }
4658                                                 }
4659
4660                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
4661                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
4662                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
4663                                         }
4664                                 }
4665                         }
4666                 }
4667
4668                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
4669                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
4670                 if($orig_body === false)
4671                         $orig_body = '';
4672
4673                 $img_start = strpos($orig_body, '[img');
4674                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4675                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4676         }
4677
4678         $new_body = $new_body . $orig_body;
4679
4680         return($new_body);
4681 }
4682
4683
4684 function has_permissions($obj) {
4685         if(($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
4686                 return true;
4687         return false;
4688 }
4689
4690 function compare_permissions($obj1,$obj2) {
4691         // first part is easy. Check that these are exactly the same.
4692         if(($obj1['allow_cid'] == $obj2['allow_cid'])
4693                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
4694                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
4695                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
4696                 return true;
4697
4698         // This is harder. Parse all the permissions and compare the resulting set.
4699
4700         $recipients1 = enumerate_permissions($obj1);
4701         $recipients2 = enumerate_permissions($obj2);
4702         sort($recipients1);
4703         sort($recipients2);
4704         if($recipients1 == $recipients2)
4705                 return true;
4706         return false;
4707 }
4708
4709 // returns an array of contact-ids that are allowed to see this object
4710
4711 function enumerate_permissions($obj) {
4712         require_once('include/group.php');
4713         $allow_people = expand_acl($obj['allow_cid']);
4714         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
4715         $deny_people  = expand_acl($obj['deny_cid']);
4716         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
4717         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
4718         $deny         = array_unique(array_merge($deny_people,$deny_groups));
4719         $recipients   = array_diff($recipients,$deny);
4720         return $recipients;
4721 }
4722
4723 function item_getfeedtags($item) {
4724         $ret = array();
4725         $matches = false;
4726         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4727         if($cnt) {
4728                 for($x = 0; $x < $cnt; $x ++) {
4729                         if($matches[1][$x])
4730                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
4731                 }
4732         }
4733         $matches = false;
4734         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4735         if($cnt) {
4736                 for($x = 0; $x < $cnt; $x ++) {
4737                         if($matches[1][$x])
4738                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
4739                 }
4740         }
4741         return $ret;
4742 }
4743
4744 function item_get_attachment($item) {
4745         $o = "";
4746         $siteinfo = get_attached_data($item["body"]);
4747
4748         switch($siteinfo["type"]) {
4749                 case 'link':
4750                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4751                         break;
4752                 case 'photo':
4753                         $imgdata = get_photo_info($siteinfo["image"]);
4754                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["image"]).'" type="'.$imgdata["mime"].'" length="'.$imgdata["size"].'"/>'."\r\n";
4755                         break;
4756                 case 'video':
4757                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4758                         break;
4759                 default:
4760                         break;
4761         }
4762
4763         return $o;
4764 }
4765
4766 function item_getfeedattach($item) {
4767         $ret = '';
4768         $arr = explode('[/attach],',$item['attach']);
4769         if(count($arr)) {
4770                 foreach($arr as $r) {
4771                         $matches = false;
4772                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches);
4773                         if($cnt) {
4774                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
4775                                 if(intval($matches[2]))
4776                                         $ret .= 'length="' . intval($matches[2]) . '" ';
4777                                 if($matches[4] !== ' ')
4778                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
4779                                 $ret .= ' />' . "\r\n";
4780                         }
4781                 }
4782         }
4783         return $ret;
4784 }
4785
4786
4787
4788 function item_expire($uid, $days, $network = "", $force = false) {
4789
4790         if((! $uid) || ($days < 1))
4791                 return;
4792
4793         // $expire_network_only = save your own wall posts
4794         // and just expire conversations started by others
4795
4796         $expire_network_only = get_pconfig($uid,'expire','network_only');
4797         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
4798
4799         if ($network != "") {
4800                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
4801                 // There is an index "uid_network_received" but not "uid_network_created"
4802                 // This avoids the creation of another index just for one purpose.
4803                 // And it doesn't really matter wether to look at "received" or "created"
4804                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4805         } else
4806                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4807
4808         $r = q("SELECT * FROM `item`
4809                 WHERE `uid` = %d $range
4810                 AND `id` = `parent`
4811                 $sql_extra
4812                 AND `deleted` = 0",
4813                 intval($uid),
4814                 intval($days)
4815         );
4816
4817         if(! count($r))
4818                 return;
4819
4820         $expire_items = get_pconfig($uid, 'expire','items');
4821         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
4822
4823         // Forcing expiring of items - but not notes and marked items
4824         if ($force)
4825                 $expire_items = true;
4826
4827         $expire_notes = get_pconfig($uid, 'expire','notes');
4828         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
4829
4830         $expire_starred = get_pconfig($uid, 'expire','starred');
4831         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
4832
4833         $expire_photos = get_pconfig($uid, 'expire','photos');
4834         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
4835
4836         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
4837
4838         foreach($r as $item) {
4839
4840                 // don't expire filed items
4841
4842                 if(strpos($item['file'],'[') !== false)
4843                         continue;
4844
4845                 // Only expire posts, not photos and photo comments
4846
4847                 if($expire_photos==0 && strlen($item['resource-id']))
4848                         continue;
4849                 if($expire_starred==0 && intval($item['starred']))
4850                         continue;
4851                 if($expire_notes==0 && $item['type']=='note')
4852                         continue;
4853                 if($expire_items==0 && $item['type']!='note')
4854                         continue;
4855
4856                 drop_item($item['id'],false);
4857         }
4858
4859         proc_run('php',"include/notifier.php","expire","$uid");
4860
4861 }
4862
4863
4864 function drop_items($items) {
4865         $uid = 0;
4866
4867         if(! local_user() && ! remote_user())
4868                 return;
4869
4870         if(count($items)) {
4871                 foreach($items as $item) {
4872                         $owner = drop_item($item,false);
4873                         if($owner && ! $uid)
4874                                 $uid = $owner;
4875                 }
4876         }
4877
4878         // multiple threads may have been deleted, send an expire notification
4879
4880         if($uid)
4881                 proc_run('php',"include/notifier.php","expire","$uid");
4882 }
4883
4884
4885 function drop_item($id,$interactive = true) {
4886
4887         $a = get_app();
4888
4889         // locate item to be deleted
4890
4891         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
4892                 intval($id)
4893         );
4894
4895         if(! count($r)) {
4896                 if(! $interactive)
4897                         return 0;
4898                 notice( t('Item not found.') . EOL);
4899                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4900         }
4901
4902         $item = $r[0];
4903
4904         $owner = $item['uid'];
4905
4906         $cid = 0;
4907
4908         // check if logged in user is either the author or owner of this item
4909
4910         if(is_array($_SESSION['remote'])) {
4911                 foreach($_SESSION['remote'] as $visitor) {
4912                         if($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
4913                                 $cid = $visitor['cid'];
4914                                 break;
4915                         }
4916                 }
4917         }
4918
4919
4920         if((local_user() == $item['uid']) || ($cid) || (! $interactive)) {
4921
4922                 // Check if we should do HTML-based delete confirmation
4923                 if($_REQUEST['confirm']) {
4924                         // <form> can't take arguments in its "action" parameter
4925                         // so add any arguments as hidden inputs
4926                         $query = explode_querystring($a->query_string);
4927                         $inputs = array();
4928                         foreach($query['args'] as $arg) {
4929                                 if(strpos($arg, 'confirm=') === false) {
4930                                         $arg_parts = explode('=', $arg);
4931                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
4932                                 }
4933                         }
4934
4935                         return replace_macros(get_markup_template('confirm.tpl'), array(
4936                                 '$method' => 'get',
4937                                 '$message' => t('Do you really want to delete this item?'),
4938                                 '$extra_inputs' => $inputs,
4939                                 '$confirm' => t('Yes'),
4940                                 '$confirm_url' => $query['base'],
4941                                 '$confirm_name' => 'confirmed',
4942                                 '$cancel' => t('Cancel'),
4943                         ));
4944                 }
4945                 // Now check how the user responded to the confirmation query
4946                 if($_REQUEST['canceled']) {
4947                         goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4948                 }
4949
4950                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
4951                 // delete the item
4952
4953                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
4954                         dbesc(datetime_convert()),
4955                         dbesc(datetime_convert()),
4956                         intval($item['id'])
4957                 );
4958                 create_tags_from_item($item['id']);
4959                 create_files_from_item($item['id']);
4960                 delete_thread($item['id'], $item['parent-uri']);
4961
4962                 // clean up categories and tags so they don't end up as orphans
4963
4964                 $matches = false;
4965                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
4966                 if($cnt) {
4967                         foreach($matches as $mtch) {
4968                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
4969                         }
4970                 }
4971
4972                 $matches = false;
4973
4974                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
4975                 if($cnt) {
4976                         foreach($matches as $mtch) {
4977                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
4978                         }
4979                 }
4980
4981                 // If item is a link to a photo resource, nuke all the associated photos
4982                 // (visitors will not have photo resources)
4983                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
4984                 // generate a resource-id and therefore aren't intimately linked to the item.
4985
4986                 if(strlen($item['resource-id'])) {
4987                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
4988                                 dbesc($item['resource-id']),
4989                                 intval($item['uid'])
4990                         );
4991                         // ignore the result
4992                 }
4993
4994                 // If item is a link to an event, nuke the event record.
4995
4996                 if(intval($item['event-id'])) {
4997                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
4998                                 intval($item['event-id']),
4999                                 intval($item['uid'])
5000                         );
5001                         // ignore the result
5002                 }
5003
5004                 // If item has attachments, drop them
5005
5006                 foreach(explode(",",$item['attach']) as $attach){
5007                         preg_match("|attach/(\d+)|", $attach, $matches);
5008                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
5009                                 intval($matches[1]),
5010                                 local_user()
5011                         );
5012                         // ignore the result
5013                 }
5014
5015
5016                 // clean up item_id and sign meta-data tables
5017
5018                 /*
5019                 // Old code - caused very long queries and warning entries in the mysql logfiles:
5020
5021                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
5022                         intval($item['id']),
5023                         intval($item['uid'])
5024                 );
5025
5026                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
5027                         intval($item['id']),
5028                         intval($item['uid'])
5029                 );
5030                 */
5031
5032                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
5033
5034                 // Creating list of parents
5035                 $r = q("select id from item where parent = %d and uid = %d",
5036                         intval($item['id']),
5037                         intval($item['uid'])
5038                 );
5039
5040                 $parentid = "";
5041
5042                 foreach ($r AS $row) {
5043                         if ($parentid != "")
5044                                 $parentid .= ", ";
5045
5046                         $parentid .= $row["id"];
5047                 }
5048
5049                 // Now delete them
5050                 if ($parentid != "") {
5051                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
5052
5053                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
5054                 }
5055
5056                 // If it's the parent of a comment thread, kill all the kids
5057
5058                 if($item['uri'] == $item['parent-uri']) {
5059                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
5060                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
5061                                 dbesc(datetime_convert()),
5062                                 dbesc(datetime_convert()),
5063                                 dbesc($item['parent-uri']),
5064                                 intval($item['uid'])
5065                         );
5066                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
5067                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
5068                         delete_thread_uri($item['parent-uri'], $item['uid']);
5069                         // ignore the result
5070                 }
5071                 else {
5072                         // ensure that last-child is set in case the comment that had it just got wiped.
5073                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
5074                                 dbesc(datetime_convert()),
5075                                 dbesc($item['parent-uri']),
5076                                 intval($item['uid'])
5077                         );
5078                         // who is the last child now?
5079                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
5080                                 dbesc($item['parent-uri']),
5081                                 intval($item['uid'])
5082                         );
5083                         if(count($r)) {
5084                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
5085                                         intval($r[0]['id'])
5086                                 );
5087                         }
5088
5089                         // Add a relayable_retraction signature for Diaspora.
5090                         store_diaspora_retract_sig($item, $a->user, $a->get_baseurl());
5091                 }
5092
5093                 $drop_id = intval($item['id']);
5094
5095                 // send the notification upstream/downstream as the case may be
5096
5097                 proc_run('php',"include/notifier.php","drop","$drop_id");
5098
5099                 if(! $interactive)
5100                         return $owner;
5101                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5102                 //NOTREACHED
5103         }
5104         else {
5105                 if(! $interactive)
5106                         return 0;
5107                 notice( t('Permission denied.') . EOL);
5108                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5109                 //NOTREACHED
5110         }
5111
5112 }
5113
5114
5115 function first_post_date($uid,$wall = false) {
5116         $r = q("select id, created from item
5117                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
5118                 and id = parent
5119                 order by created asc limit 1",
5120                 intval($uid),
5121                 intval($wall ? 1 : 0)
5122         );
5123         if(count($r)) {
5124 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
5125                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
5126         }
5127         return false;
5128 }
5129
5130 /* modified posted_dates() {below} to arrange the list in years */
5131 function list_post_dates($uid, $wall) {
5132         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5133
5134         $dthen = first_post_date($uid, $wall);
5135         if(! $dthen)
5136                 return array();
5137
5138         // Set the start and end date to the beginning of the month
5139         $dnow = substr($dnow,0,8).'01';
5140         $dthen = substr($dthen,0,8).'01';
5141
5142         $ret = array();
5143
5144         // Starting with the current month, get the first and last days of every
5145         // month down to and including the month of the first post
5146         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5147                 $dyear = intval(substr($dnow,0,4));
5148                 $dstart = substr($dnow,0,8) . '01';
5149                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5150                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5151                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5152                 $str = day_translate(datetime_convert('','',$dnow,'F'));
5153                 if(! $ret[$dyear])
5154                         $ret[$dyear] = array();
5155                 $ret[$dyear][] = array($str,$end_month,$start_month);
5156                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5157         }
5158         return $ret;
5159 }
5160
5161 function posted_dates($uid,$wall) {
5162         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5163
5164         $dthen = first_post_date($uid,$wall);
5165         if(! $dthen)
5166                 return array();
5167
5168         // Set the start and end date to the beginning of the month
5169         $dnow = substr($dnow,0,8).'01';
5170         $dthen = substr($dthen,0,8).'01';
5171
5172         $ret = array();
5173         // Starting with the current month, get the first and last days of every
5174         // month down to and including the month of the first post
5175         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5176                 $dstart = substr($dnow,0,8) . '01';
5177                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5178                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5179                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5180                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
5181                 $ret[] = array($str,$end_month,$start_month);
5182                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5183         }
5184         return $ret;
5185 }
5186
5187
5188 function posted_date_widget($url,$uid,$wall) {
5189         $o = '';
5190
5191         if(! feature_enabled($uid,'archives'))
5192                 return $o;
5193
5194         // For former Facebook folks that left because of "timeline"
5195
5196 /*      if($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
5197                 return $o;*/
5198
5199         $visible_years = get_pconfig($uid,'system','archive_visible_years');
5200         if(! $visible_years)
5201                 $visible_years = 5;
5202
5203         $ret = list_post_dates($uid,$wall);
5204
5205         if(! count($ret))
5206                 return $o;
5207
5208         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
5209         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
5210
5211         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
5212                 '$title' => t('Archives'),
5213                 '$size' => $visible_years,
5214                 '$cutoff_year' => $cutoff_year,
5215                 '$cutoff' => $cutoff,
5216                 '$url' => $url,
5217                 '$dates' => $ret,
5218                 '$showmore' => t('show more')
5219
5220         ));
5221         return $o;
5222 }
5223
5224 function store_diaspora_retract_sig($item, $user, $baseurl) {
5225         // Note that we can't add a target_author_signature
5226         // if the comment was deleted by a remote user. That should be ok, because if a remote user is deleting
5227         // the comment, that means we're the home of the post, and Diaspora will only
5228         // check the parent_author_signature of retractions that it doesn't have to relay further
5229         //
5230         // I don't think this function gets called for an "unlike," but I'll check anyway
5231
5232         $enabled = intval(get_config('system','diaspora_enabled'));
5233         if(! $enabled) {
5234                 logger('drop_item: diaspora support disabled, not storing retraction signature', LOGGER_DEBUG);
5235                 return;
5236         }
5237
5238         logger('drop_item: storing diaspora retraction signature');
5239
5240         $signed_text = $item['guid'] . ';' . ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
5241
5242         if(local_user() == $item['uid']) {
5243
5244                 $handle = $user['nickname'] . '@' . substr($baseurl, strpos($baseurl,'://') + 3);
5245                 $authorsig = base64_encode(rsa_sign($signed_text,$user['prvkey'],'sha256'));
5246         }
5247         else {
5248                 $r = q("SELECT `nick`, `url` FROM `contact` WHERE `id` = '%d' LIMIT 1",
5249                         $item['contact-id'] // If this function gets called, drop_item() has already checked remote_user() == $item['contact-id']
5250                 );
5251                 if(count($r)) {
5252                         // The below handle only works for NETWORK_DFRN. I think that's ok, because this function
5253                         // only handles DFRN deletes
5254                         $handle_baseurl_start = strpos($r['url'],'://') + 3;
5255                         $handle_baseurl_length = strpos($r['url'],'/profile') - $handle_baseurl_start;
5256                         $handle = $r['nick'] . '@' . substr($r['url'], $handle_baseurl_start, $handle_baseurl_length);
5257                         $authorsig = '';
5258                 }
5259         }
5260
5261         if(isset($handle))
5262                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
5263                         intval($item['id']),
5264                         dbesc($signed_text),
5265                         dbesc($authorsig),
5266                         dbesc($handle)
5267                 );
5268
5269         return;
5270 }