include/items.php

   1 <?php
   2
   3 require_once('include/bbcode.php');
   4 require_once('include/oembed.php');
   5 require_once('include/salmon.php');
   6 require_once('include/crypto.php');
   7 require_once('include/Photo.php');
   8 require_once('include/tags.php');
   9 require_once('include/files.php');
  10 require_once('include/text.php');
  11 require_once('include/email.php');
  12 require_once('include/threads.php');
  13 require_once('include/socgraph.php');
  14 require_once('include/plaintext.php');
  15 require_once('include/ostatus.php');
  16 require_once('include/feed.php');
  17 require_once('mod/share.php');
  18
  19 require_once('library/defuse/php-encryption-1.2.1/Crypto.php');
  20
  21
  22 function get_feed_for(&$a, $dfrn_id, $owner_nick, $last_update, $direction = 0, $forpubsub = false) {
  23
  24
  25         $sitefeed    = ((strlen($owner_nick)) ? false : true); // not yet implemented, need to rewrite huge chunks of following logic
  26         $public_feed = (($dfrn_id) ? false : true);
  27         $starred     = false;   // not yet implemented, possible security issues
  28         $converse    = false;
  29
  30         if($public_feed && $a->argc > 2) {
  31                 for($x = 2; $x < $a->argc; $x++) {
  32                         if($a->argv[$x] == 'converse')
  33                                 $converse = true;
  34                         if($a->argv[$x] == 'starred')
  35                                 $starred = true;
  36                         if($a->argv[$x] === 'category' && $a->argc > ($x + 1) && strlen($a->argv[$x+1]))
  37                                 $category = $a->argv[$x+1];
  38                 }
  39         }
  40
  41
  42
  43         // default permissions - anonymous user
  44
  45         $sql_extra = " AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = '' AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = '' ";
  46
  47         $r = q("SELECT `contact`.*, `user`.`uid` AS `user_uid`, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`
  48                 FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
  49                 WHERE `contact`.`self` = 1 AND `user`.`nickname` = '%s' LIMIT 1",
  50                 dbesc($owner_nick)
  51         );
  52
  53         if(! count($r))
  54                 killme();
  55
  56         $owner = $r[0];
  57         $owner_id = $owner['user_uid'];
  58         $owner_nick = $owner['nickname'];
  59
  60         $birthday = feed_birthday($owner_id,$owner['timezone']);
  61
  62         $sql_post_table = "";
  63         $visibility = "";
  64
  65         if(! $public_feed) {
  66
  67                 $sql_extra = '';
  68                 switch($direction) {
  69                         case (-1):
  70                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  71                                 $my_id = $dfrn_id;
  72                                 break;
  73                         case 0:
  74                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  75                                 $my_id = '1:' . $dfrn_id;
  76                                 break;
  77                         case 1:
  78                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  79                                 $my_id = '0:' . $dfrn_id;
  80                                 break;
  81                         default:
  82                                 return false;
  83                                 break; // NOTREACHED
  84                 }
  85
  86                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
  87                         intval($owner_id)
  88                 );
  89
  90                 if(! count($r))
  91                         killme();
  92
  93                 $contact = $r[0];
  94                 require_once('include/security.php');
  95                 $groups = init_groups_visitor($contact['id']);
  96
  97                 if(count($groups)) {
  98                         for($x = 0; $x < count($groups); $x ++)
  99                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
 100                         $gs = implode('|', $groups);
 101                 }
 102                 else
 103                         $gs = '<<>>' ; // Impossible to match
 104
 105                 $sql_extra = sprintf("
 106                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
 107                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
 108                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
 109                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
 110                 ",
 111                         intval($contact['id']),
 112                         intval($contact['id']),
 113                         dbesc($gs),
 114                         dbesc($gs)
 115                 );
 116         }
 117
 118         if($public_feed)
 119                 $sort = 'DESC';
 120         else
 121                 $sort = 'ASC';
 122
 123         // Include answers to status.net posts in pubsub feeds
 124         if($forpubsub) {
 125                 $sql_post_table = "INNER JOIN `thread` ON `thread`.`iid` = `item`.`parent`
 126                                 LEFT JOIN `item` AS `thritem` ON `thritem`.`uri`=`item`.`thr-parent` AND `thritem`.`uid`=`item`.`uid`";
 127                 $visibility = sprintf("AND (`item`.`parent` = `item`.`id`) OR (`item`.`network` = '%s' AND ((`thread`.`network`='%s') OR (`thritem`.`network` = '%s')))",
 128                                         dbesc(NETWORK_DFRN), dbesc(NETWORK_OSTATUS), dbesc(NETWORK_OSTATUS));
 129                 $date_field = "`received`";
 130                 $sql_order = "`item`.`received` DESC";
 131         } else {
 132                 $date_field = "`changed`";
 133                 $sql_order = "`item`.`parent` ".$sort.", `item`.`created` ASC";
 134         }
 135
 136         if(! strlen($last_update))
 137                 $last_update = 'now -30 days';
 138
 139         if(isset($category)) {
 140                 $sql_post_table = sprintf("INNER JOIN (SELECT `oid` FROM `term` WHERE `term` = '%s' AND `otype` = %d AND `type` = %d AND `uid` = %d ORDER BY `tid` DESC) AS `term` ON `item`.`id` = `term`.`oid` ",
 141                                 dbesc(protect_sprintf($category)), intval(TERM_OBJ_POST), intval(TERM_CATEGORY), intval($owner_id));
 142                 //$sql_extra .= file_tag_file_query('item',$category,'category');
 143         }
 144
 145         if($public_feed) {
 146                 if(! $converse)
 147                         $sql_extra .= " AND `contact`.`self` = 1 ";
 148         }
 149
 150         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
 151
 152         //      AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 153         //      dbesc($check_date),
 154
 155         $r = q("SELECT STRAIGHT_JOIN `item`.*, `item`.`id` AS `item_id`,
 156                 `contact`.`name`, `contact`.`network`, `contact`.`photo`, `contact`.`url`,
 157                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
 158                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
 159                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`,
 160                 `sign`.`signed_text`, `sign`.`signature`, `sign`.`signer`
 161                 FROM `item` $sql_post_table
 162                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 163                 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 164                 LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
 165                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1 and `item`.`moderated` = 0 AND `item`.`parent` != 0
 166                 AND ((`item`.`wall` = 1) $visibility) AND `item`.$date_field > '%s'
 167                 $sql_extra
 168                 ORDER BY $sql_order LIMIT 0, 300",
 169                 intval($owner_id),
 170                 dbesc($check_date),
 171                 dbesc($sort)
 172         );
 173
 174         // Will check further below if this actually returned results.
 175         // We will provide an empty feed if that is the case.
 176
 177         $items = $r;
 178
 179         $feed_template = get_markup_template(($dfrn_id) ? 'atom_feed_dfrn.tpl' : 'atom_feed.tpl');
 180
 181         $atom = '';
 182
 183         $hubxml = feed_hublinks();
 184
 185         $salmon = feed_salmonlinks($owner_nick);
 186
 187         $alternatelink = $owner['url'];
 188
 189         if(isset($category))
 190                 $alternatelink .= "/category/".$category;
 191
 192         $atom .= replace_macros($feed_template, array(
 193                 '$version'      => xmlify(FRIENDICA_VERSION),
 194                 '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 195                 '$feed_title'   => xmlify($owner['name']),
 196                 '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
 197                 '$hub'          => $hubxml,
 198                 '$salmon'       => $salmon,
 199                 '$alternatelink' => xmlify($alternatelink),
 200                 '$name'         => xmlify($owner['name']),
 201                 '$profile_page' => xmlify($owner['url']),
 202                 '$photo'        => xmlify($owner['photo']),
 203                 '$thumb'        => xmlify($owner['thumb']),
 204                 '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 205                 '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 206                 '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME)) ,
 207                 '$birthday'     => ((strlen($birthday)) ? '<dfrn:birthday>' . xmlify($birthday) . '</dfrn:birthday>' : ''),
 208                 '$community'    => (($owner['page-flags'] == PAGE_COMMUNITY) ? '<dfrn:community>1</dfrn:community>' : '')
 209         ));
 210
 211         call_hooks('atom_feed', $atom);
 212
 213         if(! count($items)) {
 214
 215                 call_hooks('atom_feed_end', $atom);
 216
 217                 $atom .= '</feed>' . "\r\n";
 218                 return $atom;
 219         }
 220
 221         foreach($items as $item) {
 222
 223                 // prevent private email from leaking.
 224                 if($item['network'] === NETWORK_MAIL)
 225                         continue;
 226
 227                 // public feeds get html, our own nodes use bbcode
 228
 229                 if($public_feed) {
 230                         $type = 'html';
 231                         // catch any email that's in a public conversation and make sure it doesn't leak
 232                         if($item['private'])
 233                                 continue;
 234                 }
 235                 else {
 236                         $type = 'text';
 237                 }
 238
 239                 $atom .= atom_entry($item,$type,null,$owner,true);
 240         }
 241
 242         call_hooks('atom_feed_end', $atom);
 243
 244         $atom .= '</feed>' . "\r\n";
 245
 246         return $atom;
 247 }
 248
 249
 250 function construct_verb($item) {
 251         if($item['verb'])
 252                 return $item['verb'];
 253         return ACTIVITY_POST;
 254 }
 255
 256 function construct_activity_object($item) {
 257
 258         if($item['object']) {
 259                 $o = '<as:object>' . "\r\n";
 260                 $r = parse_xml_string($item['object'],false);
 261
 262
 263                 if(! $r)
 264                         return '';
 265                 if($r->type)
 266                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 267                 if($r->id)
 268                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 269                 if($r->title)
 270                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 271                 if($r->link) {
 272                         if(substr($r->link,0,1) === '<') {
 273                                 // patch up some facebook "like" activity objects that got stored incorrectly
 274                                 // for a couple of months prior to 9-Jun-2011 and generated bad XML.
 275                                 // we can probably remove this hack here and in the following function in a few months time.
 276                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 277                                         $r->link = str_replace('&','&amp;', $r->link);
 278                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 279                                 $o .= $r->link;
 280                         }
 281                         else
 282                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 283                 }
 284                 if($r->content)
 285                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 286                 $o .= '</as:object>' . "\r\n";
 287                 return $o;
 288         }
 289
 290         return '';
 291 }
 292
 293 function construct_activity_target($item) {
 294
 295         if($item['target']) {
 296                 $o = '<as:target>' . "\r\n";
 297                 $r = parse_xml_string($item['target'],false);
 298                 if(! $r)
 299                         return '';
 300                 if($r->type)
 301                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 302                 if($r->id)
 303                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 304                 if($r->title)
 305                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 306                 if($r->link) {
 307                         if(substr($r->link,0,1) === '<') {
 308                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 309                                         $r->link = str_replace('&','&amp;', $r->link);
 310                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 311                                 $o .= $r->link;
 312                         }
 313                         else
 314                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 315                 }
 316                 if($r->content)
 317                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 318                 $o .= '</as:target>' . "\r\n";
 319                 return $o;
 320         }
 321
 322         return '';
 323 }
 324
 325 /* limit_body_size()
 326  *
 327  *              The purpose of this function is to apply system message length limits to
 328  *              imported messages without including any embedded photos in the length
 329  */
 330 if(! function_exists('limit_body_size')) {
 331 function limit_body_size($body) {
 332
 333 //      logger('limit_body_size: start', LOGGER_DEBUG);
 334
 335         $maxlen = get_max_import_size();
 336
 337         // If the length of the body, including the embedded images, is smaller
 338         // than the maximum, then don't waste time looking for the images
 339         if($maxlen && (strlen($body) > $maxlen)) {
 340
 341                 logger('limit_body_size: the total body length exceeds the limit', LOGGER_DEBUG);
 342
 343                 $orig_body = $body;
 344                 $new_body = '';
 345                 $textlen = 0;
 346                 $max_found = false;
 347
 348                 $img_start = strpos($orig_body, '[img');
 349                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 350                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 351                 while(($img_st_close !== false) && ($img_end !== false)) {
 352
 353                         $img_st_close++; // make it point to AFTER the closing bracket
 354                         $img_end += $img_start;
 355                         $img_end += strlen('[/img]');
 356
 357                         if(! strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
 358                                 // This is an embedded image
 359
 360                                 if( ($textlen + $img_start) > $maxlen ) {
 361                                         if($textlen < $maxlen) {
 362                                                 logger('limit_body_size: the limit happens before an embedded image', LOGGER_DEBUG);
 363                                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 364                                                 $textlen = $maxlen;
 365                                         }
 366                                 }
 367                                 else {
 368                                         $new_body = $new_body . substr($orig_body, 0, $img_start);
 369                                         $textlen += $img_start;
 370                                 }
 371
 372                                 $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
 373                         }
 374                         else {
 375
 376                                 if( ($textlen + $img_end) > $maxlen ) {
 377                                         if($textlen < $maxlen) {
 378                                                 logger('limit_body_size: the limit happens before the end of a non-embedded image', LOGGER_DEBUG);
 379                                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 380                                                 $textlen = $maxlen;
 381                                         }
 382                                 }
 383                                 else {
 384                                         $new_body = $new_body . substr($orig_body, 0, $img_end);
 385                                         $textlen += $img_end;
 386                                 }
 387                         }
 388                         $orig_body = substr($orig_body, $img_end);
 389
 390                         if($orig_body === false) // in case the body ends on a closing image tag
 391                                 $orig_body = '';
 392
 393                         $img_start = strpos($orig_body, '[img');
 394                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 395                         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 396                 }
 397
 398                 if( ($textlen + strlen($orig_body)) > $maxlen) {
 399                         if($textlen < $maxlen) {
 400                                 logger('limit_body_size: the limit happens after the end of the last image', LOGGER_DEBUG);
 401                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 402                                 $textlen = $maxlen;
 403                         }
 404                 }
 405                 else {
 406                         logger('limit_body_size: the text size with embedded images extracted did not violate the limit', LOGGER_DEBUG);
 407                         $new_body = $new_body . $orig_body;
 408                         $textlen += strlen($orig_body);
 409                 }
 410
 411                 return $new_body;
 412         }
 413         else
 414                 return $body;
 415 }}
 416
 417 function title_is_body($title, $body) {
 418
 419         $title = strip_tags($title);
 420         $title = trim($title);
 421         $title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
 422         $title = str_replace(array("\n", "\r", "\t", " "), array("","","",""), $title);
 423
 424         $body = strip_tags($body);
 425         $body = trim($body);
 426         $body = html_entity_decode($body, ENT_QUOTES, 'UTF-8');
 427         $body = str_replace(array("\n", "\r", "\t", " "), array("","","",""), $body);
 428
 429         if (strlen($title) < strlen($body))
 430                 $body = substr($body, 0, strlen($title));
 431
 432         if (($title != $body) and (substr($title, -3) == "...")) {
 433                 $pos = strrpos($title, "...");
 434                 if ($pos > 0) {
 435                         $title = substr($title, 0, $pos);
 436                         $body = substr($body, 0, $pos);
 437                 }
 438         }
 439
 440         return($title == $body);
 441 }
 442
 443
 444
 445 function get_atom_elements($feed, $item, $contact = array()) {
 446
 447         require_once('library/HTMLPurifier.auto.php');
 448         require_once('include/html2bbcode.php');
 449
 450         $best_photo = array();
 451
 452         $res = array();
 453
 454         $author = $item->get_author();
 455         if($author) {
 456                 $res['author-name'] = unxmlify($author->get_name());
 457                 $res['author-link'] = unxmlify($author->get_link());
 458         }
 459         else {
 460                 $res['author-name'] = unxmlify($feed->get_title());
 461                 $res['author-link'] = unxmlify($feed->get_permalink());
 462         }
 463         $res['uri'] = unxmlify($item->get_id());
 464         $res['title'] = unxmlify($item->get_title());
 465         $res['body'] = unxmlify($item->get_content());
 466         $res['plink'] = unxmlify($item->get_link(0));
 467
 468         if (isset($contact["network"]) AND ($contact["network"] == NETWORK_FEED) AND strstr($res['plink'], ".app.net/")) {
 469                 logger("get_atom_elements: detected app.net posting: ".print_r($res, true), LOGGER_DEBUG);
 470                 $res['title'] = "";
 471                 $res['body'] = nl2br($res['body']);
 472         }
 473
 474         // removing the content of the title if its identically to the body
 475         // This helps with auto generated titles e.g. from tumblr
 476         if (title_is_body($res["title"], $res["body"]))
 477                 $res['title'] = "";
 478
 479         if($res['plink'])
 480                 $base_url = implode('/', array_slice(explode('/',$res['plink']),0,3));
 481         else
 482                 $base_url = '';
 483
 484         // look for a photo. We should check media size and find the best one,
 485         // but for now let's just find any author photo
 486         // Additionally we look for an alternate author link. On OStatus this one is the one we want.
 487
 488         $authorlinks = $item->feed->data["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["feed"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["author"][0]["child"]["http://www.w3.org/2005/Atom"]["link"];
 489         if (is_array($authorlinks)) {
 490                 foreach ($authorlinks as $link) {
 491                         $linkdata = array_shift($link["attribs"]);
 492
 493                         if ($linkdata["rel"] == "alternate")
 494                                 $res["author-link"] = $linkdata["href"];
 495                 };
 496         }
 497
 498         $rawauthor = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 499
 500         if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 501                 $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 502                 foreach($base as $link) {
 503                         if($link['attribs']['']['rel'] === 'alternate')
 504                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 505
 506                         if(!x($res, 'author-avatar') || !$res['author-avatar']) {
 507                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 508                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 509                         }
 510                 }
 511         }
 512
 513         $rawactor = $item->get_item_tags(NAMESPACE_ACTIVITY, 'actor');
 514
 515         if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 516                 $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 517                 if($base && count($base)) {
 518                         foreach($base as $link) {
 519                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 520                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 521                                 if(!x($res, 'author-avatar') || !$res['author-avatar']) {
 522                                         if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 523                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 524                                 }
 525                         }
 526                 }
 527         }
 528
 529         // No photo/profile-link on the item - look at the feed level
 530
 531         if((! (x($res,'author-link'))) || (! (x($res,'author-avatar')))) {
 532                 $rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 533                 if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 534                         $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 535                         foreach($base as $link) {
 536                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 537                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 538                                 if(! $res['author-avatar']) {
 539                                         if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 540                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 541                                 }
 542                         }
 543                 }
 544
 545                 $rawactor = $feed->get_feed_tags(NAMESPACE_ACTIVITY, 'subject');
 546
 547                 if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 548                         $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 549
 550                         if($base && count($base)) {
 551                                 foreach($base as $link) {
 552                                         if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 553                                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 554                                         if(! (x($res,'author-avatar'))) {
 555                                                 if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 556                                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 557                                         }
 558                                 }
 559                         }
 560                 }
 561         }
 562
 563         $apps = $item->get_item_tags(NAMESPACE_STATUSNET,'notice_info');
 564         if($apps && $apps[0]['attribs']['']['source']) {
 565                 $res['app'] = strip_tags(unxmlify($apps[0]['attribs']['']['source']));
 566                 if($res['app'] === 'web')
 567                         $res['app'] = 'OStatus';
 568         }
 569
 570         // base64 encoded json structure representing Diaspora signature
 571
 572         $dsig = $item->get_item_tags(NAMESPACE_DFRN,'diaspora_signature');
 573         if($dsig) {
 574                 $res['dsprsig'] = unxmlify($dsig[0]['data']);
 575         }
 576
 577         $dguid = $item->get_item_tags(NAMESPACE_DFRN,'diaspora_guid');
 578         if($dguid)
 579                 $res['guid'] = unxmlify($dguid[0]['data']);
 580
 581         $bm = $item->get_item_tags(NAMESPACE_DFRN,'bookmark');
 582         if($bm)
 583                 $res['bookmark'] = ((unxmlify($bm[0]['data']) === 'true') ? 1 : 0);
 584
 585
 586         /**
 587          * If there's a copy of the body content which is guaranteed to have survived mangling in transit, use it.
 588          */
 589
 590         $have_real_body = false;
 591
 592         $rawenv = $item->get_item_tags(NAMESPACE_DFRN, 'env');
 593         if($rawenv) {
 594                 $have_real_body = true;
 595                 $res['body'] = $rawenv[0]['data'];
 596                 $res['body'] = str_replace(array(' ',"\t","\r","\n"), array('','','',''),$res['body']);
 597                 // make sure nobody is trying to sneak some html tags by us
 598                 $res['body'] = notags(base64url_decode($res['body']));
 599         }
 600
 601
 602         $res['body'] = limit_body_size($res['body']);
 603
 604         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 605         // the content type. Our own network only emits text normally, though it might have been converted to
 606         // html if we used a pubsubhubbub transport. But if we see even one html tag in our text, we will
 607         // have to assume it is all html and needs to be purified.
 608
 609         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 610         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 611         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 612         // html.
 613
 614         if((strpos($res['body'],'<') !== false) && (strpos($res['body'],'>') !== false)) {
 615
 616                 $res['body'] = reltoabs($res['body'],$base_url);
 617
 618                 $res['body'] = html2bb_video($res['body']);
 619
 620                 $res['body'] = oembed_html2bbcode($res['body']);
 621
 622                 $config = HTMLPurifier_Config::createDefault();
 623                 $config->set('Cache.DefinitionImpl', null);
 624
 625                 // we shouldn't need a whitelist, because the bbcode converter
 626                 // will strip out any unsupported tags.
 627
 628                 $purifier = new HTMLPurifier($config);
 629                 $res['body'] = $purifier->purify($res['body']);
 630
 631                 $res['body'] = @html2bbcode($res['body']);
 632
 633
 634         }
 635         elseif(! $have_real_body) {
 636
 637                 // it's not one of our messages and it has no tags
 638                 // so it's probably just text. We'll escape it just to be safe.
 639
 640                 $res['body'] = escape_tags($res['body']);
 641         }
 642
 643
 644         // this tag is obsolete but we keep it for really old sites
 645
 646         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 647         if($allow && $allow[0]['data'] == 1)
 648                 $res['last-child'] = 1;
 649         else
 650                 $res['last-child'] = 0;
 651
 652         $private = $item->get_item_tags(NAMESPACE_DFRN,'private');
 653         if($private && intval($private[0]['data']) > 0)
 654                 $res['private'] = intval($private[0]['data']);
 655         else
 656                 $res['private'] = 0;
 657
 658         $extid = $item->get_item_tags(NAMESPACE_DFRN,'extid');
 659         if($extid && $extid[0]['data'])
 660                 $res['extid'] = $extid[0]['data'];
 661
 662         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 663         if($rawlocation)
 664                 $res['location'] = unxmlify($rawlocation[0]['data']);
 665
 666
 667         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 668         if($rawcreated)
 669                 $res['created'] = unxmlify($rawcreated[0]['data']);
 670
 671
 672         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 673         if($rawedited)
 674                 $res['edited'] = unxmlify($rawedited[0]['data']);
 675
 676         if((x($res,'edited')) && (! (x($res,'created'))))
 677                 $res['created'] = $res['edited'];
 678
 679         if(! $res['created'])
 680                 $res['created'] = $item->get_date('c');
 681
 682         if(! $res['edited'])
 683                 $res['edited'] = $item->get_date('c');
 684
 685
 686         // Disallow time travelling posts
 687
 688         $d1 = strtotime($res['created']);
 689         $d2 = strtotime($res['edited']);
 690         $d3 = strtotime('now');
 691
 692         if($d1 > $d3)
 693                 $res['created'] = datetime_convert();
 694         if($d2 > $d3)
 695                 $res['edited'] = datetime_convert();
 696
 697         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 698         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 699                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 700         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 701                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 702         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 703                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 704         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 705                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 706
 707         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 708                 $base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 709
 710                 foreach($base as $link) {
 711                         if(!x($res, 'owner-avatar') || !$res['owner-avatar']) {
 712                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 713                                         $res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
 714                         }
 715                 }
 716         }
 717
 718         $rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
 719         if($rawgeo)
 720                 $res['coord'] = unxmlify($rawgeo[0]['data']);
 721
 722         if ($contact["network"] == NETWORK_FEED) {
 723                 $res['verb'] = ACTIVITY_POST;
 724                 $res['object-type'] = ACTIVITY_OBJ_NOTE;
 725         }
 726
 727         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 728
 729         // select between supported verbs
 730
 731         if($rawverb) {
 732                 $res['verb'] = unxmlify($rawverb[0]['data']);
 733         }
 734
 735         // translate OStatus unfollow to activity streams if it happened to get selected
 736
 737         if((x($res,'verb')) && ($res['verb'] === 'http://ostatus.org/schema/1.0/unfollow'))
 738                 $res['verb'] = ACTIVITY_UNFOLLOW;
 739
 740         $cats = $item->get_categories();
 741         if($cats) {
 742                 $tag_arr = array();
 743                 foreach($cats as $cat) {
 744                         $term = $cat->get_term();
 745                         if(! $term)
 746                                 $term = $cat->get_label();
 747                         $scheme = $cat->get_scheme();
 748                         if($scheme && $term && stristr($scheme,'X-DFRN:'))
 749                                 $tag_arr[] = substr($scheme,7,1) . '[url=' . unxmlify(substr($scheme,9)) . ']' . unxmlify($term) . '[/url]';
 750                         elseif($term)
 751                                 $tag_arr[] = notags(trim($term));
 752                 }
 753                 $res['tag'] =  implode(',', $tag_arr);
 754         }
 755
 756         $attach = $item->get_enclosures();
 757         if($attach) {
 758                 $att_arr = array();
 759                 foreach($attach as $att) {
 760                         $len   = intval($att->get_length());
 761                         $link  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_link()))));
 762                         $title = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_title()))));
 763                         $type  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_type()))));
 764                         if(strpos($type,';'))
 765                                 $type = substr($type,0,strpos($type,';'));
 766                         if((! $link) || (strpos($link,'http') !== 0))
 767                                 continue;
 768
 769                         if(! $title)
 770                                 $title = ' ';
 771                         if(! $type)
 772                                 $type = 'application/octet-stream';
 773
 774                         $att_arr[] = '[attach]href="' . $link . '" length="' . $len . '" type="' . $type . '" title="' . $title . '"[/attach]';
 775                 }
 776                 $res['attach'] = implode(',', $att_arr);
 777         }
 778
 779         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 780
 781         if($rawobj) {
 782                 $res['object'] = '<object>' . "\n";
 783                 $child = $rawobj[0]['child'];
 784                 if($child[NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 785                         $res['object-type'] = $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 786                         $res['object'] .= '<type>' . $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 787                 }
 788                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'id') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 789                         $res['object'] .= '<id>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 790                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'link') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 791                         $res['object'] .= '<link>' . encode_rel_links($child[SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 792                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'title') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 793                         $res['object'] .= '<title>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 794                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'content') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 795                         $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 796                         if(! $body)
 797                                 $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 798                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 799                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 800                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 801
 802                                 $body = html2bb_video($body);
 803
 804                                 $config = HTMLPurifier_Config::createDefault();
 805                                 $config->set('Cache.DefinitionImpl', null);
 806
 807                                 $purifier = new HTMLPurifier($config);
 808                                 $body = $purifier->purify($body);
 809                                 $body = html2bbcode($body);
 810                         }
 811
 812                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 813                 }
 814
 815                 $res['object'] .= '</object>' . "\n";
 816         }
 817
 818         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'target');
 819
 820         if($rawobj) {
 821                 $res['target'] = '<target>' . "\n";
 822                 $child = $rawobj[0]['child'];
 823                 if($child[NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 824                         $res['target'] .= '<type>' . $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 825                 }
 826                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'id') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 827                         $res['target'] .= '<id>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 828                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'link') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 829                         $res['target'] .= '<link>' . encode_rel_links($child[SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 830                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'data') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 831                         $res['target'] .= '<title>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 832                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'data') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 833                         $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 834                         if(! $body)
 835                                 $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 836                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 837                         $res['target'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 838                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 839
 840                                 $body = html2bb_video($body);
 841
 842                                 $config = HTMLPurifier_Config::createDefault();
 843                                 $config->set('Cache.DefinitionImpl', null);
 844
 845                                 $purifier = new HTMLPurifier($config);
 846                                 $body = $purifier->purify($body);
 847                                 $body = html2bbcode($body);
 848                         }
 849
 850                         $res['target'] .= '<content>' . $body . '</content>' . "\n";
 851                 }
 852
 853                 $res['target'] .= '</target>' . "\n";
 854         }
 855
 856         // This is some experimental stuff. By now retweets are shown with "RT:"
 857         // But: There is data so that the message could be shown similar to native retweets
 858         // There is some better way to parse this array - but it didn't worked for me.
 859         $child = $item->feed->data["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["feed"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["entry"][0]["child"]["http://activitystrea.ms/spec/1.0/"][object][0]["child"];
 860         if (is_array($child)) {
 861                 logger('get_atom_elements: Looking for status.net repeated message');
 862
 863                 $message = $child["http://activitystrea.ms/spec/1.0/"]["object"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["content"][0]["data"];
 864                 $orig_id = ostatus_convert_href($child["http://activitystrea.ms/spec/1.0/"]["object"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["id"][0]["data"]);
 865                 $author = $child[SIMPLEPIE_NAMESPACE_ATOM_10]["author"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10];
 866                 $uri = $author["uri"][0]["data"];
 867                 $name = $author["name"][0]["data"];
 868                 $avatar = @array_shift($author["link"][2]["attribs"]);
 869                 $avatar = $avatar["href"];
 870
 871                 if (($name != "") and ($uri != "") and ($avatar != "") and ($message != "")) {
 872                         logger('get_atom_elements: fixing sender of repeated message. '.$orig_id, LOGGER_DEBUG);
 873
 874                         if (!intval(get_config('system','wall-to-wall_share'))) {
 875                                 $prefix = share_header($name, $uri, $avatar, "", "", $orig_link);
 876
 877                                 $res["body"] = $prefix.html2bbcode($message)."[/share]";
 878                         } else {
 879                                 $res["owner-name"] = $res["author-name"];
 880                                 $res["owner-link"] = $res["author-link"];
 881                                 $res["owner-avatar"] = $res["author-avatar"];
 882
 883                                 $res["author-name"] = $name;
 884                                 $res["author-link"] = $uri;
 885                                 $res["author-avatar"] = $avatar;
 886
 887                                 $res["body"] = html2bbcode($message);
 888                         }
 889                 }
 890         }
 891
 892         if (isset($contact["network"]) AND ($contact["network"] == NETWORK_FEED) AND $contact['fetch_further_information']) {
 893                 $preview = "";
 894
 895                 // Handle enclosures and treat them as preview picture
 896                 if (isset($attach))
 897                         foreach ($attach AS $attachment)
 898                                 if ($attachment->type == "image/jpeg")
 899                                         $preview = $attachment->link;
 900
 901                 $res["body"] = $res["title"].add_page_info($res['plink'], false, $preview, ($contact['fetch_further_information'] == 2), $contact['ffi_keyword_blacklist']);
 902                 $res["tag"] = add_page_keywords($res['plink'], false, $preview, ($contact['fetch_further_information'] == 2), $contact['ffi_keyword_blacklist']);
 903                 $res["title"] = "";
 904                 $res["object-type"] = ACTIVITY_OBJ_BOOKMARK;
 905                 unset($res["attach"]);
 906         } elseif (isset($contact["network"]) AND ($contact["network"] == NETWORK_OSTATUS))
 907                 $res["body"] = add_page_info_to_body($res["body"]);
 908         elseif (isset($contact["network"]) AND ($contact["network"] == NETWORK_FEED) AND strstr($res['plink'], ".app.net/")) {
 909                 $res["body"] = add_page_info_to_body($res["body"]);
 910         }
 911
 912         $arr = array('feed' => $feed, 'item' => $item, 'result' => $res);
 913
 914         call_hooks('parse_atom', $arr);
 915
 916         return $res;
 917 }
 918
 919 function add_page_info_data($data) {
 920         call_hooks('page_info_data', $data);
 921
 922         // It maybe is a rich content, but if it does have everything that a link has,
 923         // then treat it that way
 924         if (($data["type"] == "rich") AND is_string($data["title"]) AND
 925                 is_string($data["text"]) AND (sizeof($data["images"]) > 0))
 926                 $data["type"] = "link";
 927
 928         if ((($data["type"] != "link") AND ($data["type"] != "video") AND ($data["type"] != "photo")) OR ($data["title"] == $url))
 929                 return("");
 930
 931         if ($no_photos AND ($data["type"] == "photo"))
 932                 return("");
 933
 934         // If the link contains BBCode stuff, make a short link out of this to avoid parsing problems
 935         if (strpos($data["url"], '[') OR strpos($data["url"], ']')) {
 936                 require_once("include/network.php");
 937                 $data["url"] = short_link($data["url"]);
 938         }
 939
 940         if (($data["type"] != "photo") AND is_string($data["title"]))
 941                 $text .= "[bookmark=".$data["url"]."]".trim($data["title"])."[/bookmark]";
 942
 943         if (($data["type"] != "video") AND ($photo != ""))
 944                 $text .= '[img]'.$photo.'[/img]';
 945         elseif (($data["type"] != "video") AND (sizeof($data["images"]) > 0)) {
 946                 $imagedata = $data["images"][0];
 947                 $text .= '[img]'.$imagedata["src"].'[/img]';
 948         }
 949
 950         if (($data["type"] != "photo") AND is_string($data["text"]))
 951                 $text .= "[quote]".$data["text"]."[/quote]";
 952
 953         $hashtags = "";
 954         if (isset($data["keywords"]) AND count($data["keywords"])) {
 955                 $a = get_app();
 956                 $hashtags = "\n";
 957                 foreach ($data["keywords"] AS $keyword) {
 958                         $hashtag = str_replace(array(" ", "+", "/", ".", "#", "'"),
 959                                                 array("","", "", "", "", ""), $keyword);
 960                         $hashtags .= "#[url=".$a->get_baseurl()."/search?tag=".rawurlencode($hashtag)."]".$hashtag."[/url] ";
 961                 }
 962         }
 963
 964         return("\n[class=type-".$data["type"]."]".$text."[/class]".$hashtags);
 965 }
 966
 967 function query_page_info($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
 968         require_once("mod/parse_url.php");
 969
 970         $data = Cache::get("parse_url:".$url);
 971         if (is_null($data)){
 972                 $data = parseurl_getsiteinfo($url, true);
 973                 Cache::set("parse_url:".$url,serialize($data), CACHE_DAY);
 974         } else
 975                 $data = unserialize($data);
 976
 977         if ($photo != "")
 978                 $data["images"][0]["src"] = $photo;
 979
 980         logger('fetch page info for '.$url.' '.print_r($data, true), LOGGER_DEBUG);
 981
 982         if (!$keywords AND isset($data["keywords"]))
 983                 unset($data["keywords"]);
 984
 985         if (($keyword_blacklist != "") AND isset($data["keywords"])) {
 986                 $list = explode(",", $keyword_blacklist);
 987                 foreach ($list AS $keyword) {
 988                         $keyword = trim($keyword);
 989                         $index = array_search($keyword, $data["keywords"]);
 990                         if ($index !== false)
 991                                 unset($data["keywords"][$index]);
 992                 }
 993         }
 994
 995         return($data);
 996 }
 997
 998 function add_page_keywords($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
 999         $data = query_page_info($url, $no_photos, $photo, $keywords, $keyword_blacklist);
1000
1001         $tags = "";
1002         if (isset($data["keywords"]) AND count($data["keywords"])) {
1003                 $a = get_app();
1004                 foreach ($data["keywords"] AS $keyword) {
1005                         $hashtag = str_replace(array(" ", "+", "/", ".", "#", "'"),
1006                                                 array("","", "", "", "", ""), $keyword);
1007
1008                         if ($tags != "")
1009                                 $tags .= ",";
1010
1011                         $tags .= "#[url=".$a->get_baseurl()."/search?tag=".rawurlencode($hashtag)."]".$hashtag."[/url]";
1012                 }
1013         }
1014
1015         return($tags);
1016 }
1017
1018 function add_page_info($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
1019         $data = query_page_info($url, $no_photos, $photo, $keywords, $keyword_blacklist);
1020
1021         $text = add_page_info_data($data);
1022
1023         return($text);
1024 }
1025
1026 function add_page_info_to_body($body, $texturl = false, $no_photos = false) {
1027
1028         logger('add_page_info_to_body: fetch page info for body '.$body, LOGGER_DEBUG);
1029
1030         $URLSearchString = "^\[\]";
1031
1032         // Adding these spaces is a quick hack due to my problems with regular expressions :)
1033         preg_match("/[^!#@]\[url\]([$URLSearchString]*)\[\/url\]/ism", " ".$body, $matches);
1034
1035         if (!$matches)
1036                 preg_match("/[^!#@]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", " ".$body, $matches);
1037
1038         // Convert urls without bbcode elements
1039         if (!$matches AND $texturl) {
1040                 preg_match("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", " ".$body, $matches);
1041
1042                 // Yeah, a hack. I really hate regular expressions :)
1043                 if ($matches)
1044                         $matches[1] = $matches[2];
1045         }
1046
1047         if ($matches)
1048                 $footer = add_page_info($matches[1], $no_photos);
1049
1050         // Remove the link from the body if the link is attached at the end of the post
1051         if (isset($footer) AND (trim($footer) != "") AND (strpos($footer, $matches[1]))) {
1052                 $removedlink = trim(str_replace($matches[1], "", $body));
1053                 if (($removedlink == "") OR strstr($body, $removedlink))
1054                         $body = $removedlink;
1055
1056                 $url = str_replace(array('/', '.'), array('\/', '\.'), $matches[1]);
1057                 $removedlink = preg_replace("/\[url\=".$url."\](.*?)\[\/url\]/ism", '', $body);
1058                 if (($removedlink == "") OR strstr($body, $removedlink))
1059                         $body = $removedlink;
1060         }
1061
1062         // Add the page information to the bottom
1063         if (isset($footer) AND (trim($footer) != ""))
1064                 $body .= $footer;
1065
1066         return $body;
1067 }
1068
1069 function encode_rel_links($links) {
1070         $o = '';
1071         if(! ((is_array($links)) && (count($links))))
1072                 return $o;
1073         foreach($links as $link) {
1074                 $o .= '<link ';
1075                 if($link['attribs']['']['rel'])
1076                         $o .= 'rel="' . $link['attribs']['']['rel'] . '" ';
1077                 if($link['attribs']['']['type'])
1078                         $o .= 'type="' . $link['attribs']['']['type'] . '" ';
1079                 if($link['attribs']['']['href'])
1080                         $o .= 'href="' . $link['attribs']['']['href'] . '" ';
1081                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['width'])
1082                         $o .= 'media:width="' . $link['attribs'][NAMESPACE_MEDIA]['width'] . '" ';
1083                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['height'])
1084                         $o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
1085                 $o .= ' />' . "\n" ;
1086         }
1087         return xmlify($o);
1088 }
1089
1090 function add_guid($item) {
1091         $r = q("SELECT `guid` FROM `guid` WHERE `guid` = '%s' LIMIT 1", dbesc($item["guid"]));
1092         if ($r)
1093                 return;
1094
1095         q("INSERT INTO `guid` (`guid`,`plink`,`uri`,`network`) VALUES ('%s','%s','%s','%s')",
1096                 dbesc($item["guid"]), dbesc($item["plink"]),
1097                 dbesc($item["uri"]), dbesc($item["network"]));
1098 }
1099
1100 // Adds a "lang" specification in a "postopts" element of given $arr,
1101 // if possible and not already present.
1102 // Expects "body" element to exist in $arr.
1103 // TODO: add a parameter to request forcing override
1104 function item_add_language_opt(&$arr) {
1105
1106         if (version_compare(PHP_VERSION, '5.3.0', '<')) return; // LanguageDetect.php not available ?
1107
1108         if ( x($arr, 'postopts') )
1109         {
1110                 if ( strstr($arr['postopts'], 'lang=') )
1111                 {
1112                         // do not override
1113                         // TODO: add parameter to request overriding
1114                         return;
1115                 }
1116                 $postopts = $arr['postopts'];
1117         }
1118         else
1119         {
1120                 $postopts = "";
1121         }
1122
1123         require_once('library/langdet/Text/LanguageDetect.php');
1124         $naked_body = preg_replace('/\[(.+?)\]/','',$arr['body']);
1125         $l = new Text_LanguageDetect;
1126         //$lng = $l->detectConfidence($naked_body);
1127         //$arr['postopts'] = (($lng['language']) ? 'lang=' . $lng['language'] . ';' . $lng['confidence'] : '');
1128         $lng = $l->detect($naked_body, 3);
1129
1130         if (sizeof($lng) > 0) {
1131                 if ($postopts != "") $postopts .= '&'; // arbitrary separator, to be reviewed
1132                 $postopts .= 'lang=';
1133                 $sep = "";
1134                 foreach ($lng as $language => $score) {
1135                         $postopts .= $sep . $language.";".$score;
1136                         $sep = ':';
1137                 }
1138                 $arr['postopts'] = $postopts;
1139         }
1140 }
1141
1142 function item_store($arr,$force_parent = false, $notify = false, $dontcache = false) {
1143
1144         // If it is a posting where users should get notifications, then define it as wall posting
1145         if ($notify) {
1146                 $arr['wall'] = 1;
1147                 $arr['type'] = 'wall';
1148                 $arr['origin'] = 1;
1149                 $arr['last-child'] = 1;
1150                 $arr['network'] = NETWORK_DFRN;
1151         }
1152
1153         // If a Diaspora signature structure was passed in, pull it out of the
1154         // item array and set it aside for later storage.
1155
1156         $dsprsig = null;
1157         if(x($arr,'dsprsig')) {
1158                 $dsprsig = json_decode(base64_decode($arr['dsprsig']));
1159                 unset($arr['dsprsig']);
1160         }
1161
1162         // Converting the plink
1163         if ($arr['network'] == NETWORK_OSTATUS) {
1164                 if (isset($arr['plink']))
1165                         $arr['plink'] = ostatus_convert_href($arr['plink']);
1166                 elseif (isset($arr['uri']))
1167                         $arr['plink'] = ostatus_convert_href($arr['uri']);
1168         }
1169
1170         if(x($arr, 'gravity'))
1171                 $arr['gravity'] = intval($arr['gravity']);
1172         elseif($arr['parent-uri'] === $arr['uri'])
1173                 $arr['gravity'] = 0;
1174         elseif(activity_match($arr['verb'],ACTIVITY_POST))
1175                 $arr['gravity'] = 6;
1176         else
1177                 $arr['gravity'] = 6;   // extensible catchall
1178
1179         if(! x($arr,'type'))
1180                 $arr['type']      = 'remote';
1181
1182
1183
1184         /* check for create  date and expire time */
1185         $uid = intval($arr['uid']);
1186         $r = q("SELECT expire FROM user WHERE uid = %d", intval($uid));
1187         if(count($r)) {
1188                 $expire_interval = $r[0]['expire'];
1189                 if ($expire_interval>0) {
1190                         $expire_date =  new DateTime( '- '.$expire_interval.' days', new DateTimeZone('UTC'));
1191                         $created_date = new DateTime($arr['created'], new DateTimeZone('UTC'));
1192                         if ($created_date < $expire_date) {
1193                                 logger('item-store: item created ('.$arr['created'].') before expiration time ('.$expire_date->format(DateTime::W3C).'). ignored. ' . print_r($arr,true), LOGGER_DEBUG);
1194                                 return 0;
1195                         }
1196                 }
1197         }
1198
1199         // If there is no guid then take the same guid that was taken before for the same uri
1200         if ((trim($arr['guid']) == "") AND (trim($arr['uri']) != "") AND (trim($arr['network']) != "")) {
1201                 logger('item_store: checking for an existing guid for uri '.$arr['uri'], LOGGER_DEBUG);
1202                 $r = q("SELECT `guid` FROM `guid` WHERE `uri` = '%s' AND `network` = '%s' LIMIT 1",
1203                         dbesc(trim($arr['uri'])), dbesc(trim($arr['network'])));
1204
1205                 if(count($r)) {
1206                         $arr['guid'] = $r[0]["guid"];
1207                         logger('item_store: found guid '.$arr['guid'].' for uri '.$arr['uri'], LOGGER_DEBUG);
1208                 }
1209         }
1210
1211         // If there is no guid then take the same guid that was taken before for the same plink
1212         if ((trim($arr['guid']) == "") AND (trim($arr['plink']) != "") AND (trim($arr['network']) != "")) {
1213                 logger('item_store: checking for an existing guid for plink '.$arr['plink'], LOGGER_DEBUG);
1214                 $r = q("SELECT `guid`, `uri` FROM `guid` WHERE `plink` = '%s' AND `network` = '%s' LIMIT 1",
1215                         dbesc(trim($arr['plink'])), dbesc(trim($arr['network'])));
1216
1217                 if(count($r)) {
1218                         $arr['guid'] = $r[0]["guid"];
1219                         logger('item_store: found guid '.$arr['guid'].' for plink '.$arr['plink'], LOGGER_DEBUG);
1220
1221                         if ($r[0]["uri"] != $arr['uri'])
1222                         logger('Different uri for same guid: '.$arr['uri'].' and '.$r[0]["uri"].' - this shouldnt happen!', LOGGER_DEBUG);
1223                 }
1224         }
1225
1226         // Shouldn't happen but we want to make absolutely sure it doesn't leak from a plugin.
1227         // Deactivated, since the bbcode parser can handle with it - and it destroys posts with some smileys that contain "<"
1228         //if((strpos($arr['body'],'<') !== false) || (strpos($arr['body'],'>') !== false))
1229         //      $arr['body'] = strip_tags($arr['body']);
1230
1231         item_add_language_opt($arr);
1232
1233         if ($notify)
1234                 $guid_prefix = "";
1235         else
1236                 $guid_prefix = $arr['network'];
1237
1238         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
1239         $arr['guid']          = ((x($arr,'guid'))          ? notags(trim($arr['guid']))          : get_guid(32, $guid_prefix));
1240         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : $arr['guid']);
1241         $arr['extid']         = ((x($arr,'extid'))         ? notags(trim($arr['extid']))         : '');
1242         $arr['author-name']   = ((x($arr,'author-name'))   ? trim($arr['author-name'])   : '');
1243         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
1244         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
1245         $arr['owner-name']    = ((x($arr,'owner-name'))    ? trim($arr['owner-name'])    : '');
1246         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
1247         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
1248         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
1249         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
1250         $arr['commented']     = ((x($arr,'commented')  !== false) ? datetime_convert('UTC','UTC',$arr['commented'])  : datetime_convert());
1251         $arr['received']      = ((x($arr,'received')  !== false) ? datetime_convert('UTC','UTC',$arr['received'])  : datetime_convert());
1252         $arr['changed']       = ((x($arr,'changed')  !== false) ? datetime_convert('UTC','UTC',$arr['changed'])  : datetime_convert());
1253         $arr['title']         = ((x($arr,'title'))         ? trim($arr['title'])         : '');
1254         $arr['location']      = ((x($arr,'location'))      ? trim($arr['location'])      : '');
1255         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
1256         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
1257         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
1258         $arr['deleted']       = 0;
1259         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : '');
1260         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
1261         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
1262         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
1263         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
1264         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
1265         $arr['plink']         = ((x($arr,'plink'))         ? notags(trim($arr['plink']))         : '');
1266         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
1267         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
1268         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
1269         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
1270         $arr['private']       = ((x($arr,'private'))       ? intval($arr['private'])             : 0 );
1271         $arr['bookmark']      = ((x($arr,'bookmark'))      ? intval($arr['bookmark'])            : 0 );
1272         $arr['body']          = ((x($arr,'body'))          ? trim($arr['body'])                  : '');
1273         $arr['tag']           = ((x($arr,'tag'))           ? notags(trim($arr['tag']))           : '');
1274         $arr['attach']        = ((x($arr,'attach'))        ? notags(trim($arr['attach']))        : '');
1275         $arr['app']           = ((x($arr,'app'))           ? notags(trim($arr['app']))           : '');
1276         $arr['origin']        = ((x($arr,'origin'))        ? intval($arr['origin'])              : 0 );
1277         $arr['network']       = ((x($arr,'network'))       ? trim($arr['network'])               : '');
1278         $arr['postopts']      = ((x($arr,'postopts'))      ? trim($arr['postopts'])              : '');
1279         $arr['resource-id']   = ((x($arr,'resource-id'))   ? trim($arr['resource-id'])           : '');
1280         $arr['event-id']      = ((x($arr,'event-id'))      ? intval($arr['event-id'])            : 0 );
1281         $arr['inform']        = ((x($arr,'inform'))        ? trim($arr['inform'])                : '');
1282         $arr['file']          = ((x($arr,'file'))          ? trim($arr['file'])                  : '');
1283
1284         if ($arr['plink'] == "") {
1285                 $a = get_app();
1286                 $arr['plink'] = $a->get_baseurl().'/display/'.urlencode($arr['guid']);
1287         }
1288
1289         if ($arr['network'] == "") {
1290                 $r = q("SELECT `network` FROM `contact` WHERE `network` IN ('%s', '%s', '%s') AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
1291                         dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS),
1292                         dbesc(normalise_link($arr['author-link'])),
1293                         intval($arr['uid'])
1294                 );
1295
1296                 if(!count($r))
1297                         $r = q("SELECT `network` FROM `gcontact` WHERE `network` IN ('%s', '%s', '%s') AND `nurl` = '%s' LIMIT 1",
1298                                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS),
1299                                 dbesc(normalise_link($arr['author-link']))
1300                         );
1301
1302                 if(!count($r))
1303                         $r = q("SELECT `network` FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
1304                                 intval($arr['contact-id']),
1305                                 intval($arr['uid'])
1306                         );
1307
1308                 if(count($r))
1309                         $arr['network'] = $r[0]["network"];
1310
1311                 // Fallback to friendica (why is it empty in some cases?)
1312                 if ($arr['network'] == "")
1313                         $arr['network'] = NETWORK_DFRN;
1314
1315                 logger("item_store: Set network to ".$arr["network"]." for ".$arr["uri"], LOGGER_DEBUG);
1316         }
1317
1318         if ($arr['guid'] != "") {
1319                 // Checking if there is already an item with the same guid
1320                 logger('checking for an item for user '.$arr['uid'].' on network '.$arr['network'].' with the guid '.$arr['guid'], LOGGER_DEBUG);
1321                 $r = q("SELECT `guid` FROM `item` WHERE `guid` = '%s' AND `network` = '%s' AND `uid` = '%d' LIMIT 1",
1322                         dbesc($arr['guid']), dbesc($arr['network']), intval($arr['uid']));
1323
1324                 if(count($r)) {
1325                         logger('found item with guid '.$arr['guid'].' for user '.$arr['uid'].' on network '.$arr['network'], LOGGER_DEBUG);
1326                         return 0;
1327                 }
1328         }
1329
1330         // Check for hashtags in the body and repair or add hashtag links
1331         item_body_set_hashtags($arr);
1332
1333         $arr['thr-parent'] = $arr['parent-uri'];
1334         if($arr['parent-uri'] === $arr['uri']) {
1335                 $parent_id = 0;
1336                 $parent_deleted = 0;
1337                 $allow_cid = $arr['allow_cid'];
1338                 $allow_gid = $arr['allow_gid'];
1339                 $deny_cid  = $arr['deny_cid'];
1340                 $deny_gid  = $arr['deny_gid'];
1341                 $notify_type = 'wall-new';
1342         }
1343         else {
1344
1345                 // find the parent and snarf the item id and ACLs
1346                 // and anything else we need to inherit
1347
1348                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d ORDER BY `id` ASC LIMIT 1",
1349                         dbesc($arr['parent-uri']),
1350                         intval($arr['uid'])
1351                 );
1352
1353                 if(count($r)) {
1354
1355                         // is the new message multi-level threaded?
1356                         // even though we don't support it now, preserve the info
1357                         // and re-attach to the conversation parent.
1358
1359                         if($r[0]['uri'] != $r[0]['parent-uri']) {
1360                                 $arr['parent-uri'] = $r[0]['parent-uri'];
1361                                 $z = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `parent-uri` = '%s' AND `uid` = %d
1362                                         ORDER BY `id` ASC LIMIT 1",
1363                                         dbesc($r[0]['parent-uri']),
1364                                         dbesc($r[0]['parent-uri']),
1365                                         intval($arr['uid'])
1366                                 );
1367                                 if($z && count($z))
1368                                         $r = $z;
1369                         }
1370
1371                         $parent_id      = $r[0]['id'];
1372                         $parent_deleted = $r[0]['deleted'];
1373                         $allow_cid      = $r[0]['allow_cid'];
1374                         $allow_gid      = $r[0]['allow_gid'];
1375                         $deny_cid       = $r[0]['deny_cid'];
1376                         $deny_gid       = $r[0]['deny_gid'];
1377                         $arr['wall']    = $r[0]['wall'];
1378                         $notify_type    = 'comment-new';
1379
1380                         // if the parent is private, force privacy for the entire conversation
1381                         // This differs from the above settings as it subtly allows comments from
1382                         // email correspondents to be private even if the overall thread is not.
1383
1384                         if($r[0]['private'])
1385                                 $arr['private'] = $r[0]['private'];
1386
1387                         // Edge case. We host a public forum that was originally posted to privately.
1388                         // The original author commented, but as this is a comment, the permissions
1389                         // weren't fixed up so it will still show the comment as private unless we fix it here.
1390
1391                         if((intval($r[0]['forum_mode']) == 1) && (! $r[0]['private']))
1392                                 $arr['private'] = 0;
1393
1394
1395                         // If its a post from myself then tag the thread as "mention"
1396                         logger("item_store: Checking if parent ".$parent_id." has to be tagged as mention for user ".$arr['uid'], LOGGER_DEBUG);
1397                         $u = q("select * from user where uid = %d limit 1", intval($arr['uid']));
1398                         if(count($u)) {
1399                                 $a = get_app();
1400                                 $self = normalise_link($a->get_baseurl() . '/profile/' . $u[0]['nickname']);
1401                                 logger("item_store: 'myself' is ".$self." for parent ".$parent_id." checking against ".$arr['author-link']." and ".$arr['owner-link'], LOGGER_DEBUG);
1402                                 if ((normalise_link($arr['author-link']) == $self) OR (normalise_link($arr['owner-link']) == $self)) {
1403                                         q("UPDATE `thread` SET `mention` = 1 WHERE `iid` = %d", intval($parent_id));
1404                                         logger("item_store: tagged thread ".$parent_id." as mention for user ".$self, LOGGER_DEBUG);
1405                                 }
1406                         }
1407                 }
1408                 else {
1409
1410                         // Allow one to see reply tweets from status.net even when
1411                         // we don't have or can't see the original post.
1412
1413                         if($force_parent) {
1414                                 logger('item_store: $force_parent=true, reply converted to top-level post.');
1415                                 $parent_id = 0;
1416                                 $arr['parent-uri'] = $arr['uri'];
1417                                 $arr['gravity'] = 0;
1418                         }
1419                         else {
1420                                 logger('item_store: item parent '.$arr['parent-uri'].' for '.$arr['uid'].' was not found - ignoring item');
1421                                 return 0;
1422                         }
1423
1424                         $parent_deleted = 0;
1425                 }
1426         }
1427
1428         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `network` = '%s' AND `uid` = %d LIMIT 1",
1429                 dbesc($arr['uri']),
1430                 dbesc($arr['network']),
1431                 intval($arr['uid'])
1432         );
1433         if($r && count($r)) {
1434                 logger('duplicated item with the same uri found. ' . print_r($arr,true));
1435                 return 0;
1436         }
1437
1438         // Check for an existing post with the same content. There seems to be a problem with OStatus.
1439         $r = q("SELECT `id` FROM `item` WHERE `body` = '%s' AND `network` = '%s' AND `created` = '%s' AND `contact-id` = %d AND `uid` = %d LIMIT 1",
1440                 dbesc($arr['body']),
1441                 dbesc($arr['network']),
1442                 dbesc($arr['created']),
1443                 intval($arr['contact-id']),
1444                 intval($arr['uid'])
1445         );
1446         if($r && count($r)) {
1447                 logger('duplicated item with the same body found. ' . print_r($arr,true));
1448                 return 0;
1449         }
1450
1451         // Is this item available in the global items (with uid=0)?
1452         if ($arr["uid"] == 0) {
1453                 $arr["global"] = true;
1454
1455                 q("UPDATE `item` SET `global` = 1 WHERE `guid` = '%s'", dbesc($arr["guid"]));
1456         }  else {
1457                 $isglobal = q("SELECT `global` FROM `item` WHERE `uid` = 0 AND `guid` = '%s'", dbesc($arr["guid"]));
1458
1459                 $arr["global"] = (count($isglobal) > 0);
1460         }
1461
1462         // Fill the cache field
1463         put_item_in_cache($arr);
1464
1465         if ($notify)
1466                 call_hooks('post_local',$arr);
1467         else
1468                 call_hooks('post_remote',$arr);
1469
1470         if(x($arr,'cancel')) {
1471                 logger('item_store: post cancelled by plugin.');
1472                 return 0;
1473         }
1474
1475         // Store the unescaped version
1476         $unescaped = $arr;
1477
1478         dbesc_array($arr);
1479
1480         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
1481
1482         $r = dbq("INSERT INTO `item` (`"
1483                         . implode("`, `", array_keys($arr))
1484                         . "`) VALUES ('"
1485                         . implode("', '", array_values($arr))
1486                         . "')" );
1487
1488         // And restore it
1489         $arr = $unescaped;
1490
1491         // find the item we just created
1492         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `network` = '%s' ORDER BY `id` ASC ",
1493                 dbesc($arr['uri']),
1494                 intval($arr['uid']),
1495                 dbesc($arr['network'])
1496         );
1497
1498         if(count($r)) {
1499
1500                 // Store the guid and other relevant data
1501                 add_guid($arr);
1502
1503                 $current_post = $r[0]['id'];
1504                 logger('item_store: created item ' . $current_post);
1505
1506                 // Set "success_update" and "last-item" to the date of the last time we heard from this contact
1507                 // This can be used to filter for inactive contacts.
1508                 // Only do this for public postings to avoid privacy problems, since poco data is public.
1509                 // Don't set this value if it isn't from the owner (could be an author that we don't know)
1510
1511                 $update = (!$arr['private'] AND (($arr["author-link"] === $arr["owner-link"]) OR ($arr["parent-uri"] === $arr["uri"])));
1512
1513                 // Is it a forum? Then we don't care about the rules from above
1514                 if (!$update AND ($arr["network"] == NETWORK_DFRN) AND ($arr["parent-uri"] === $arr["uri"])) {
1515                         $isforum = q("SELECT `forum` FROM `contact` WHERE `id` = %d AND `forum`",
1516                                         intval($arr['contact-id']));
1517                         if ($isforum)
1518                                 $update = true;
1519                 }
1520
1521                 if ($update)
1522                         q("UPDATE `contact` SET `success_update` = '%s', `last-item` = '%s' WHERE `id` = %d",
1523                                 dbesc($arr['received']),
1524                                 dbesc($arr['received']),
1525                                 intval($arr['contact-id'])
1526                         );
1527         } else {
1528                 logger('item_store: could not locate created item');
1529                 return 0;
1530         }
1531         if(count($r) > 1) {
1532                 logger('item_store: duplicated post occurred. Removing duplicates. uri = '.$arr['uri'].' uid = '.$arr['uid']);
1533                 q("DELETE FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `id` != %d ",
1534                         dbesc($arr['uri']),
1535                         intval($arr['uid']),
1536                         intval($current_post)
1537                 );
1538         }
1539
1540         if((! $parent_id) || ($arr['parent-uri'] === $arr['uri']))
1541                 $parent_id = $current_post;
1542
1543         if(strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid))
1544                 $private = 1;
1545         else
1546                 $private = $arr['private'];
1547
1548         // Set parent id - and also make sure to inherit the parent's ACLs.
1549
1550         $r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
1551                 `deny_cid` = '%s', `deny_gid` = '%s', `private` = %d, `deleted` = %d WHERE `id` = %d",
1552                 intval($parent_id),
1553                 dbesc($allow_cid),
1554                 dbesc($allow_gid),
1555                 dbesc($deny_cid),
1556                 dbesc($deny_gid),
1557                 intval($private),
1558                 intval($parent_deleted),
1559                 intval($current_post)
1560         );
1561
1562         $arr['id'] = $current_post;
1563         $arr['parent'] = $parent_id;
1564         $arr['allow_cid'] = $allow_cid;
1565         $arr['allow_gid'] = $allow_gid;
1566         $arr['deny_cid'] = $deny_cid;
1567         $arr['deny_gid'] = $deny_gid;
1568         $arr['private'] = $private;
1569         $arr['deleted'] = $parent_deleted;
1570
1571         // update the commented timestamp on the parent
1572         // Only update "commented" if it is really a comment
1573         if (($arr['verb'] == ACTIVITY_POST) OR !get_config("system", "like_no_comment"))
1574                 q("UPDATE `item` SET `commented` = '%s', `changed` = '%s' WHERE `id` = %d",
1575                         dbesc(datetime_convert()),
1576                         dbesc(datetime_convert()),
1577                         intval($parent_id)
1578                 );
1579         else
1580                 q("UPDATE `item` SET `changed` = '%s' WHERE `id` = %d",
1581                         dbesc(datetime_convert()),
1582                         intval($parent_id)
1583                 );
1584
1585         if($dsprsig) {
1586                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
1587                         intval($current_post),
1588                         dbesc($dsprsig->signed_text),
1589                         dbesc($dsprsig->signature),
1590                         dbesc($dsprsig->signer)
1591                 );
1592         }
1593
1594
1595         /**
1596          * If this is now the last-child, force all _other_ children of this parent to *not* be last-child
1597          */
1598
1599         if($arr['last-child']) {
1600                 $r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d",
1601                         dbesc($arr['uri']),
1602                         intval($arr['uid']),
1603                         intval($current_post)
1604                 );
1605         }
1606
1607         $deleted = tag_deliver($arr['uid'],$current_post);
1608
1609         // current post can be deleted if is for a community page and no mention are
1610         // in it.
1611         if (!$deleted AND !$dontcache) {
1612
1613                 $r = q('SELECT * FROM `item` WHERE id = %d', intval($current_post));
1614                 if (count($r) == 1) {
1615                         if ($notify)
1616                                 call_hooks('post_local_end', $r[0]);
1617                         else
1618                                 call_hooks('post_remote_end', $r[0]);
1619                 } else
1620                         logger('item_store: new item not found in DB, id ' . $current_post);
1621         }
1622
1623         // Add every contact of the post to the global contact table
1624         poco_store($arr);
1625
1626         create_tags_from_item($current_post);
1627         create_files_from_item($current_post);
1628
1629         // Only check for notifications on start posts
1630         if ($arr['parent-uri'] === $arr['uri']) {
1631                 add_thread($current_post);
1632                 logger('item_store: Check notification for contact '.$arr['contact-id'].' and post '.$current_post, LOGGER_DEBUG);
1633
1634                 // Send a notification for every new post?
1635                 $r = q("SELECT `notify_new_posts` FROM `contact` WHERE `id` = %d AND `uid` = %d AND `notify_new_posts` LIMIT 1",
1636                         intval($arr['contact-id']),
1637                         intval($arr['uid'])
1638                 );
1639                 $send_notification = count($r);
1640
1641                 if (!$send_notification) {
1642                         $tags = q("SELECT `url` FROM `term` WHERE `otype` = %d AND `oid` = %d AND `type` = %d AND `uid` = %d",
1643                                 intval(TERM_OBJ_POST), intval($current_post), intval(TERM_MENTION), intval($arr['uid']));
1644
1645                         if (count($tags)) {
1646                                 foreach ($tags AS $tag) {
1647                                         $r = q("SELECT `id` FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d AND `notify_new_posts`",
1648                                                 normalise_link($tag["url"]), intval($arr['uid']));
1649                                         if (count($r))
1650                                                 $send_notification = true;
1651                                 }
1652                         }
1653                 }
1654
1655                 if ($send_notification) {
1656                         logger('item_store: Send notification for contact '.$arr['contact-id'].' and post '.$current_post, LOGGER_DEBUG);
1657                         $u = q("SELECT * FROM user WHERE uid = %d LIMIT 1",
1658                                 intval($arr['uid']));
1659
1660                         $item = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d",
1661                                 intval($current_post),
1662                                 intval($arr['uid'])
1663                         );
1664
1665                         $a = get_app();
1666
1667                         require_once('include/enotify.php');
1668                         notification(array(
1669                                 'type'         => NOTIFY_SHARE,
1670                                 'notify_flags' => $u[0]['notify-flags'],
1671                                 'language'     => $u[0]['language'],
1672                                 'to_name'      => $u[0]['username'],
1673                                 'to_email'     => $u[0]['email'],
1674                                 'uid'          => $u[0]['uid'],
1675                                 'item'         => $item[0],
1676                                 'link'         => $a->get_baseurl().'/display/'.urlencode($arr['guid']),
1677                                 'source_name'  => $item[0]['author-name'],
1678                                 'source_link'  => $item[0]['author-link'],
1679                                 'source_photo' => $item[0]['author-avatar'],
1680                                 'verb'         => ACTIVITY_TAG,
1681                                 'otype'        => 'item',
1682                                 'parent'       => $arr['parent']
1683                         ));
1684                         logger('item_store: Notification sent for contact '.$arr['contact-id'].' and post '.$current_post, LOGGER_DEBUG);
1685                 }
1686         } else {
1687                 update_thread($parent_id);
1688                 add_shadow_entry($arr);
1689         }
1690
1691         if ($notify)
1692                 proc_run('php', "include/notifier.php", $notify_type, $current_post);
1693
1694         return $current_post;
1695 }
1696
1697 function item_body_set_hashtags(&$item) {
1698
1699         $tags = get_tags($item["body"]);
1700
1701         // No hashtags?
1702         if(!count($tags))
1703                 return(false);
1704
1705         // This sorting is important when there are hashtags that are part of other hashtags
1706         // Otherwise there could be problems with hashtags like #test and #test2
1707         rsort($tags);
1708
1709         $a = get_app();
1710
1711         $URLSearchString = "^\[\]";
1712
1713         // All hashtags should point to the home server
1714         //$item["body"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1715         //              "#[url=".$a->get_baseurl()."/search?tag=$2]$2[/url]", $item["body"]);
1716
1717         //$item["tag"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1718         //              "#[url=".$a->get_baseurl()."/search?tag=$2]$2[/url]", $item["tag"]);
1719
1720         // mask hashtags inside of url, bookmarks and attachments to avoid urls in urls
1721         $item["body"] = preg_replace_callback("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1722                 function ($match){
1723                         return("[url=".str_replace("#", "&num;", $match[1])."]".str_replace("#", "&num;", $match[2])."[/url]");
1724                 },$item["body"]);
1725
1726         $item["body"] = preg_replace_callback("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism",
1727                 function ($match){
1728                         return("[bookmark=".str_replace("#", "&num;", $match[1])."]".str_replace("#", "&num;", $match[2])."[/bookmark]");
1729                 },$item["body"]);
1730
1731         $item["body"] = preg_replace_callback("/\[attachment (.*)\](.*?)\[\/attachment\]/ism",
1732                 function ($match){
1733                         return("[attachment ".str_replace("#", "&num;", $match[1])."]".$match[2]."[/attachment]");
1734                 },$item["body"]);
1735
1736         // Repair recursive urls
1737         $item["body"] = preg_replace("/&num;\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1738                         "&num;$2", $item["body"]);
1739
1740
1741         foreach($tags as $tag) {
1742                 if(strpos($tag,'#') !== 0)
1743                         continue;
1744
1745                 if(strpos($tag,'[url='))
1746                         continue;
1747
1748                 $basetag = str_replace('_',' ',substr($tag,1));
1749
1750                 $newtag = '#[url='.$a->get_baseurl().'/search?tag='.rawurlencode($basetag).']'.$basetag.'[/url]';
1751
1752                 $item["body"] = str_replace($tag, $newtag, $item["body"]);
1753
1754                 if(!stristr($item["tag"],"/search?tag=".$basetag."]".$basetag."[/url]")) {
1755                         if(strlen($item["tag"]))
1756                                 $item["tag"] = ','.$item["tag"];
1757                         $item["tag"] = $newtag.$item["tag"];
1758                 }
1759         }
1760
1761         // Convert back the masked hashtags
1762         $item["body"] = str_replace("&num;", "#", $item["body"]);
1763 }
1764
1765 function get_item_guid($id) {
1766         $r = q("SELECT `guid` FROM `item` WHERE `id` = %d LIMIT 1", intval($id));
1767         if (count($r))
1768                 return($r[0]["guid"]);
1769         else
1770                 return("");
1771 }
1772
1773 function get_item_id($guid, $uid = 0) {
1774
1775         $nick = "";
1776         $id = 0;
1777
1778         if ($uid == 0)
1779                 $uid == local_user();
1780
1781         // Does the given user have this item?
1782         if ($uid) {
1783                 $r = q("SELECT `item`.`id`, `user`.`nickname` FROM `item` INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1784                         WHERE `item`.`visible` = 1 AND `item`.`deleted` = 0 and `item`.`moderated` = 0
1785                                 AND `item`.`guid` = '%s' AND `item`.`uid` = %d", dbesc($guid), intval($uid));
1786                 if (count($r)) {
1787                         $id = $r[0]["id"];
1788                         $nick = $r[0]["nickname"];
1789                 }
1790         }
1791
1792         // Or is it anywhere on the server?
1793         if ($nick == "") {
1794                 $r = q("SELECT `item`.`id`, `user`.`nickname` FROM `item` INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1795                         WHERE `item`.`visible` = 1 AND `item`.`deleted` = 0 and `item`.`moderated` = 0
1796                                 AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
1797                                 AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
1798                                 AND `item`.`private` = 0 AND `item`.`wall` = 1
1799                                 AND `item`.`guid` = '%s'", dbesc($guid));
1800                 if (count($r)) {
1801                         $id = $r[0]["id"];
1802                         $nick = $r[0]["nickname"];
1803                 }
1804         }
1805         return(array("nick" => $nick, "id" => $id));
1806 }
1807
1808 // return - test
1809 function get_item_contact($item,$contacts) {
1810         if(! count($contacts) || (! is_array($item)))
1811                 return false;
1812         foreach($contacts as $contact) {
1813                 if($contact['id'] == $item['contact-id']) {
1814                         return $contact;
1815                         break; // NOTREACHED
1816                 }
1817         }
1818         return false;
1819 }
1820
1821 /**
1822  * look for mention tags and setup a second delivery chain for forum/community posts if appropriate
1823  * @param int $uid
1824  * @param int $item_id
1825  * @return bool true if item was deleted, else false
1826  */
1827 function tag_deliver($uid,$item_id) {
1828
1829         //
1830
1831         $a = get_app();
1832
1833         $mention = false;
1834
1835         $u = q("select * from user where uid = %d limit 1",
1836                 intval($uid)
1837         );
1838         if(! count($u))
1839                 return;
1840
1841         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1842         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1843
1844
1845         $i = q("select * from item where id = %d and uid = %d limit 1",
1846                 intval($item_id),
1847                 intval($uid)
1848         );
1849         if(! count($i))
1850                 return;
1851
1852         $item = $i[0];
1853
1854         $link = normalise_link($a->get_baseurl() . '/profile/' . $u[0]['nickname']);
1855
1856         // Diaspora uses their own hardwired link URL in @-tags
1857         // instead of the one we supply with webfinger
1858
1859         $dlink = normalise_link($a->get_baseurl() . '/u/' . $u[0]['nickname']);
1860
1861         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1862         if($cnt) {
1863                 foreach($matches as $mtch) {
1864                         if(link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
1865                                 $mention = true;
1866                                 logger('tag_deliver: mention found: ' . $mtch[2]);
1867                         }
1868                 }
1869         }
1870
1871         if(! $mention){
1872                 if ( ($community_page || $prvgroup) &&
1873                           (!$item['wall']) && (!$item['origin']) && ($item['id'] == $item['parent'])){
1874                         // mmh.. no mention.. community page or private group... no wall.. no origin.. top-post (not a comment)
1875                         // delete it!
1876                         logger("tag_deliver: no-mention top-level post to communuty or private group. delete.");
1877                         q("DELETE FROM item WHERE id = %d and uid = %d",
1878                                 intval($item_id),
1879                                 intval($uid)
1880                         );
1881                         return true;
1882                 }
1883                 return;
1884         }
1885
1886
1887         // send a notification
1888
1889         // use a local photo if we have one
1890
1891         $r = q("select * from contact where uid = %d and nurl = '%s' limit 1",
1892                 intval($u[0]['uid']),
1893                 dbesc(normalise_link($item['author-link']))
1894         );
1895         $photo = (($r && count($r)) ? $r[0]['thumb'] : $item['author-avatar']);
1896
1897
1898         require_once('include/enotify.php');
1899         notification(array(
1900                 'type'         => NOTIFY_TAGSELF,
1901                 'notify_flags' => $u[0]['notify-flags'],
1902                 'language'     => $u[0]['language'],
1903                 'to_name'      => $u[0]['username'],
1904                 'to_email'     => $u[0]['email'],
1905                 'uid'          => $u[0]['uid'],
1906                 'item'         => $item,
1907                 'link'         => $a->get_baseurl() . '/display/'.urlencode(get_item_guid($item['id'])),
1908                 'source_name'  => $item['author-name'],
1909                 'source_link'  => $item['author-link'],
1910                 'source_photo' => $photo,
1911                 'verb'         => ACTIVITY_TAG,
1912                 'otype'        => 'item',
1913                 'parent'       => $item['parent']
1914         ));
1915
1916
1917         $arr = array('item' => $item, 'user' => $u[0], 'contact' => $r[0]);
1918
1919         call_hooks('tagged', $arr);
1920
1921         if((! $community_page) && (! $prvgroup))
1922                 return;
1923
1924
1925         // tgroup delivery - setup a second delivery chain
1926         // prevent delivery looping - only proceed
1927         // if the message originated elsewhere and is a top-level post
1928
1929         if(($item['wall']) || ($item['origin']) || ($item['id'] != $item['parent']))
1930                 return;
1931
1932         // now change this copy of the post to a forum head message and deliver to all the tgroup members
1933
1934
1935         $c = q("select name, url, thumb from contact where self = 1 and uid = %d limit 1",
1936                 intval($u[0]['uid'])
1937         );
1938         if(! count($c))
1939                 return;
1940
1941         // also reset all the privacy bits to the forum default permissions
1942
1943         $private = ($u[0]['allow_cid'] || $u[0]['allow_gid'] || $u[0]['deny_cid'] || $u[0]['deny_gid']) ? 1 : 0;
1944
1945         $forum_mode = (($prvgroup) ? 2 : 1);
1946
1947         q("update item set wall = 1, origin = 1, forum_mode = %d, `owner-name` = '%s', `owner-link` = '%s', `owner-avatar` = '%s',
1948                 `private` = %d, `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s'  where id = %d",
1949                 intval($forum_mode),
1950                 dbesc($c[0]['name']),
1951                 dbesc($c[0]['url']),
1952                 dbesc($c[0]['thumb']),
1953                 intval($private),
1954                 dbesc($u[0]['allow_cid']),
1955                 dbesc($u[0]['allow_gid']),
1956                 dbesc($u[0]['deny_cid']),
1957                 dbesc($u[0]['deny_gid']),
1958                 intval($item_id)
1959         );
1960         update_thread($item_id);
1961
1962         proc_run('php','include/notifier.php','tgroup',$item_id);
1963
1964 }
1965
1966
1967
1968 function tgroup_check($uid,$item) {
1969
1970         $a = get_app();
1971
1972         $mention = false;
1973
1974         // check that the message originated elsewhere and is a top-level post
1975
1976         if(($item['wall']) || ($item['origin']) || ($item['uri'] != $item['parent-uri']))
1977                 return false;
1978
1979
1980         $u = q("select * from user where uid = %d limit 1",
1981                 intval($uid)
1982         );
1983         if(! count($u))
1984                 return false;
1985
1986         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1987         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1988
1989
1990         $link = normalise_link($a->get_baseurl() . '/profile/' . $u[0]['nickname']);
1991
1992         // Diaspora uses their own hardwired link URL in @-tags
1993         // instead of the one we supply with webfinger
1994
1995         $dlink = normalise_link($a->get_baseurl() . '/u/' . $u[0]['nickname']);
1996
1997         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1998         if($cnt) {
1999                 foreach($matches as $mtch) {
2000                         if(link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
2001                                 $mention = true;
2002                                 logger('tgroup_check: mention found: ' . $mtch[2]);
2003                         }
2004                 }
2005         }
2006
2007         if(! $mention)
2008                 return false;
2009
2010         if((! $community_page) && (! $prvgroup))
2011                 return false;
2012
2013
2014
2015         return true;
2016
2017 }
2018
2019
2020
2021
2022
2023
2024 function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
2025
2026         $a = get_app();
2027
2028         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
2029
2030         if($contact['duplex'] && $contact['dfrn-id'])
2031                 $idtosend = '0:' . $orig_id;
2032         if($contact['duplex'] && $contact['issued-id'])
2033                 $idtosend = '1:' . $orig_id;
2034
2035
2036         $rino = get_config('system','rino_encrypt');
2037         $rino = intval($rino);
2038         // use RINO1 if mcrypt isn't installed and RINO2 was selected
2039         if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
2040
2041         logger("Local rino version: ". $rino, LOGGER_DEBUG);
2042
2043         $ssl_val = intval(get_config('system','ssl_policy'));
2044         $ssl_policy = '';
2045
2046         switch($ssl_val){
2047                 case SSL_POLICY_FULL:
2048                         $ssl_policy = 'full';
2049                         break;
2050                 case SSL_POLICY_SELFSIGN:
2051                         $ssl_policy = 'self';
2052                         break;
2053                 case SSL_POLICY_NONE:
2054                 default:
2055                         $ssl_policy = 'none';
2056                         break;
2057         }
2058
2059         $url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino='.$rino : '');
2060
2061         logger('dfrn_deliver: ' . $url);
2062
2063         $xml = fetch_url($url);
2064
2065         $curl_stat = $a->get_curl_code();
2066         if(! $curl_stat)
2067                 return(-1); // timed out
2068
2069         logger('dfrn_deliver: ' . $xml, LOGGER_DATA);
2070
2071         if(! $xml)
2072                 return 3;
2073
2074         if(strpos($xml,'<?xml') === false) {
2075                 logger('dfrn_deliver: no valid XML returned');
2076                 logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA);
2077                 return 3;
2078         }
2079
2080         $res = parse_xml_string($xml);
2081
2082         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
2083                 return (($res->status) ? $res->status : 3);
2084
2085         $postvars     = array();
2086         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
2087         $challenge    = hex2bin((string) $res->challenge);
2088         $perm         = (($res->perm) ? $res->perm : null);
2089         $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0);
2090         $rino_remote_version = intval($res->rino);
2091         $page         = (($owner['page-flags'] == PAGE_COMMUNITY) ? 1 : 0);
2092
2093         logger("Remote rino version: ".$rino_remote_version." for ".$contact["url"], LOGGER_DEBUG);
2094
2095         if($owner['page-flags'] == PAGE_PRVGROUP)
2096                 $page = 2;
2097
2098         $final_dfrn_id = '';
2099
2100         if($perm) {
2101                 if((($perm == 'rw') && (! intval($contact['writable'])))
2102                 || (($perm == 'r') && (intval($contact['writable'])))) {
2103                         q("update contact set writable = %d where id = %d",
2104                                 intval(($perm == 'rw') ? 1 : 0),
2105                                 intval($contact['id'])
2106                         );
2107                         $contact['writable'] = (string) 1 - intval($contact['writable']);
2108                 }
2109         }
2110
2111         if(($contact['duplex'] && strlen($contact['pubkey']))
2112                 || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey']))
2113                 || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) {
2114                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
2115                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
2116         }
2117         else {
2118                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
2119                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
2120         }
2121
2122         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
2123
2124         if(strpos($final_dfrn_id,':') == 1)
2125                 $final_dfrn_id = substr($final_dfrn_id,2);
2126
2127         if($final_dfrn_id != $orig_id) {
2128                 logger('dfrn_deliver: wrong dfrn_id.');
2129                 // did not decode properly - cannot trust this site
2130                 return 3;
2131         }
2132
2133         $postvars['dfrn_id']      = $idtosend;
2134         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
2135         if($dissolve)
2136                 $postvars['dissolve'] = '1';
2137
2138
2139         if((($contact['rel']) && ($contact['rel'] != CONTACT_IS_SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
2140                 $postvars['data'] = $atom;
2141                 $postvars['perm'] = 'rw';
2142         }
2143         else {
2144                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
2145                 $postvars['perm'] = 'r';
2146         }
2147
2148         $postvars['ssl_policy'] = $ssl_policy;
2149
2150         if($page)
2151                 $postvars['page'] = $page;
2152
2153
2154         if($rino>0 && $rino_remote_version>0 && (! $dissolve)) {
2155                 logger('rino version: '. $rino_remote_version);
2156
2157                 switch($rino_remote_version) {
2158                         case 1:
2159                                 // Deprecated rino version!
2160                                 $key = substr(random_string(),0,16);
2161                                 $data = aes_encrypt($postvars['data'],$key);
2162                                 break;
2163                         case 2:
2164                                 // RINO 2 based on php-encryption
2165                                 try {
2166                                         $key = Crypto::createNewRandomKey();
2167                                 } catch (CryptoTestFailed $ex) {
2168                                         logger('Cannot safely create a key');
2169                                         return -1;
2170                                 } catch (CannotPerformOperation $ex) {
2171                                         logger('Cannot safely create a key');
2172                                         return -1;
2173                                 }
2174                                 try {
2175                                         $data = Crypto::encrypt($postvars['data'], $key);
2176                                 } catch (CryptoTestFailed $ex) {
2177                                         logger('Cannot safely perform encryption');
2178                                         return -1;
2179                                 } catch (CannotPerformOperation $ex) {
2180                                         logger('Cannot safely perform encryption');
2181                                         return -1;
2182                                 }
2183                                 break;
2184                         default:
2185                                 logger("rino: invalid requested verision '$rino_remote_version'");
2186                                 return -1;
2187                 }
2188
2189                 $postvars['rino'] = $rino_remote_version;
2190                 $postvars['data'] = bin2hex($data);
2191
2192                 #logger('rino: sent key = ' . $key, LOGGER_DEBUG);
2193
2194
2195                 if($dfrn_version >= 2.1) {
2196                         if(($contact['duplex'] && strlen($contact['pubkey']))
2197                                 || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey']))
2198                                 || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) {
2199
2200                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
2201                         }
2202                         else {
2203                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
2204                         }
2205                 }
2206                 else {
2207                         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
2208                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
2209                         }
2210                         else {
2211                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
2212                         }
2213                 }
2214
2215                 logger('md5 rawkey ' . md5($postvars['key']));
2216
2217                 $postvars['key'] = bin2hex($postvars['key']);
2218         }
2219
2220
2221         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
2222
2223         $xml = post_url($contact['notify'],$postvars);
2224
2225         logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
2226
2227         $curl_stat = $a->get_curl_code();
2228         if((! $curl_stat) || (! strlen($xml)))
2229                 return(-1); // timed out
2230
2231         if(($curl_stat == 503) && (stristr($a->get_curl_headers(),'retry-after')))
2232                 return(-1);
2233
2234         if(strpos($xml,'<?xml') === false) {
2235                 logger('dfrn_deliver: phase 2: no valid XML returned');
2236                 logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA);
2237                 return 3;
2238         }
2239
2240         if($contact['term-date'] != '0000-00-00 00:00:00') {
2241                 logger("dfrn_deliver: $url back from the dead - removing mark for death");
2242                 require_once('include/Contact.php');
2243                 unmark_for_death($contact);
2244         }
2245
2246         $res = parse_xml_string($xml);
2247
2248         return $res->status;
2249 }
2250
2251
2252 /*
2253   This function returns true if $update has an edited timestamp newer
2254   than $existing, i.e. $update contains new data which should override
2255   what's already there.  If there is no timestamp yet, the update is
2256   assumed to be newer.  If the update has no timestamp, the existing
2257   item is assumed to be up-to-date.  If the timestamps are equal it
2258   assumes the update has been seen before and should be ignored.
2259   */
2260 function edited_timestamp_is_newer($existing, $update) {
2261     if (!x($existing,'edited') || !$existing['edited']) {
2262         return true;
2263     }
2264     if (!x($update,'edited') || !$update['edited']) {
2265         return false;
2266     }
2267     $existing_edited = datetime_convert('UTC', 'UTC', $existing['edited']);
2268     $update_edited = datetime_convert('UTC', 'UTC', $update['edited']);
2269     return (strcmp($existing_edited, $update_edited) < 0);
2270 }
2271
2272 /**
2273  *
2274  * consume_feed - process atom feed and update anything/everything we might need to update
2275  *
2276  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
2277  *
2278  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
2279  *             It is this person's stuff that is going to be updated.
2280  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
2281  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
2282  *             have a contact record.
2283  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
2284  *        might not) try and subscribe to it.
2285  * $datedir sorts in reverse order
2286  * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
2287  *      imported prior to its children being seen in the stream unless we are certain
2288  *      of how the feed is arranged/ordered.
2289  * With $pass = 1, we only pull parent items out of the stream.
2290  * With $pass = 2, we only pull children (comments/likes).
2291  *
2292  * So running this twice, first with pass 1 and then with pass 2 will do the right
2293  * thing regardless of feed ordering. This won't be adequate in a fully-threaded
2294  * model where comments can have sub-threads. That would require some massive sorting
2295  * to get all the feed items into a mostly linear ordering, and might still require
2296  * recursion.
2297  */
2298
2299 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0) {
2300         if ($contact['network'] === NETWORK_OSTATUS) {
2301                 if ($pass < 2) {
2302                         logger("Consume OStatus messages ", LOGGER_DEBUG);
2303                         ostatus_import($xml,$importer,$contact, $hub);
2304                 }
2305                 return;
2306         }
2307
2308         if ($contact['network'] === NETWORK_FEED) {
2309                 if ($pass < 2) {
2310                         logger("Consume feeds", LOGGER_DEBUG);
2311                         feed_import($xml,$importer,$contact, $hub);
2312                 }
2313                 return;
2314         }
2315
2316         require_once('library/simplepie/simplepie.inc');
2317         require_once('include/contact_selectors.php');
2318
2319         if(! strlen($xml)) {
2320                 logger('consume_feed: empty input');
2321                 return;
2322         }
2323
2324         $feed = new SimplePie();
2325         $feed->set_raw_data($xml);
2326         if($datedir)
2327                 $feed->enable_order_by_date(true);
2328         else
2329                 $feed->enable_order_by_date(false);
2330         $feed->init();
2331
2332         if($feed->error())
2333                 logger('consume_feed: Error parsing XML: ' . $feed->error());
2334
2335         $permalink = $feed->get_permalink();
2336
2337         // Check at the feed level for updated contact name and/or photo
2338
2339         $name_updated  = '';
2340         $new_name = '';
2341         $photo_timestamp = '';
2342         $photo_url = '';
2343         $birthday = '';
2344         $contact_updated = '';
2345
2346         $hubs = $feed->get_links('hub');
2347         logger('consume_feed: hubs: ' . print_r($hubs,true), LOGGER_DATA);
2348
2349         if(count($hubs))
2350                 $hub = implode(',', $hubs);
2351
2352         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
2353         if(! $rawtags)
2354                 $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
2355         if($rawtags) {
2356                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
2357                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
2358                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
2359                         $new_name = $elems['name'][0]['data'];
2360
2361                         // Manually checking for changed contact names
2362                         if (($new_name != $contact['name']) AND ($new_name != "") AND ($name_updated <= $contact['name-date'])) {
2363                                 $name_updated = date("c");
2364                                 $photo_timestamp = date("c");
2365                         }
2366                 }
2367                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
2368                         if ($photo_timestamp == "")
2369                                 $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
2370                         $photo_url = $elems['link'][0]['attribs']['']['href'];
2371                 }
2372
2373                 if((x($rawtags[0]['child'], NAMESPACE_DFRN)) && (x($rawtags[0]['child'][NAMESPACE_DFRN],'birthday'))) {
2374                         $birthday = datetime_convert('UTC','UTC', $rawtags[0]['child'][NAMESPACE_DFRN]['birthday'][0]['data']);
2375                 }
2376         }
2377
2378         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
2379                 logger('consume_feed: Updating photo for '.$contact['name'].' from '.$photo_url.' uid: '.$contact['uid']);
2380
2381                 $contact_updated = $photo_timestamp;
2382
2383                 require_once("include/Photo.php");
2384                 $photo_failure = false;
2385                 $have_photo = false;
2386
2387                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
2388                         intval($contact['id']),
2389                         intval($contact['uid'])
2390                 );
2391                 if(count($r)) {
2392                         $resource_id = $r[0]['resource-id'];
2393                         $have_photo = true;
2394                 }
2395                 else {
2396                         $resource_id = photo_new_resource();
2397                 }
2398
2399                 $img_str = fetch_url($photo_url,true);
2400                 // guess mimetype from headers or filename
2401                 $type = guess_image_type($photo_url,true);
2402
2403
2404                 $img = new Photo($img_str, $type);
2405                 if($img->is_valid()) {
2406                         if($have_photo) {
2407                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
2408                                         dbesc($resource_id),
2409                                         intval($contact['id']),
2410                                         intval($contact['uid'])
2411                                 );
2412                         }
2413
2414                         $img->scaleImageSquare(175);
2415
2416                         $hash = $resource_id;
2417                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 4);
2418
2419                         $img->scaleImage(80);
2420                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 5);
2421
2422                         $img->scaleImage(48);
2423                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 6);
2424
2425                         $a = get_app();
2426
2427                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
2428                                 WHERE `uid` = %d AND `id` = %d",
2429                                 dbesc(datetime_convert()),
2430                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.'.$img->getExt()),
2431                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.'.$img->getExt()),
2432                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.'.$img->getExt()),
2433                                 intval($contact['uid']),
2434                                 intval($contact['id'])
2435                         );
2436                 }
2437         }
2438
2439         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
2440                 if ($name_updated > $contact_updated)
2441                         $contact_updated = $name_updated;
2442
2443                 $r = q("select * from contact where uid = %d and id = %d limit 1",
2444                         intval($contact['uid']),
2445                         intval($contact['id'])
2446                 );
2447
2448                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d",
2449                         dbesc(notags(trim($new_name))),
2450                         dbesc(datetime_convert()),
2451                         intval($contact['uid']),
2452                         intval($contact['id'])
2453                 );
2454
2455                 // do our best to update the name on content items
2456
2457                 if(count($r)) {
2458                         q("update item set `author-name` = '%s' where `author-name` = '%s' and `author-link` = '%s' and uid = %d",
2459                                 dbesc(notags(trim($new_name))),
2460                                 dbesc($r[0]['name']),
2461                                 dbesc($r[0]['url']),
2462                                 intval($contact['uid'])
2463                         );
2464                 }
2465         }
2466
2467         if ($contact_updated AND $new_name AND $photo_url)
2468                 poco_check($contact['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $contact['id'], $contact['uid']);
2469
2470         if(strlen($birthday)) {
2471                 if(substr($birthday,0,4) != $contact['bdyear']) {
2472                         logger('consume_feed: updating birthday: ' . $birthday);
2473
2474                         /**
2475                          *
2476                          * Add new birthday event for this person
2477                          *
2478                          * $bdtext is just a readable placeholder in case the event is shared
2479                          * with others. We will replace it during presentation to our $importer
2480                          * to contain a sparkle link and perhaps a photo.
2481                          *
2482                          */
2483
2484                         $bdtext = sprintf( t('%s\'s birthday'), $contact['name']);
2485                         $bdtext2 = sprintf( t('Happy Birthday %s'), ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ) ;
2486
2487
2488                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`summary`,`desc`,`type`)
2489                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ",
2490                                 intval($contact['uid']),
2491                                 intval($contact['id']),
2492                                 dbesc(datetime_convert()),
2493                                 dbesc(datetime_convert()),
2494                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
2495                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
2496                                 dbesc($bdtext),
2497                                 dbesc($bdtext2),
2498                                 dbesc('birthday')
2499                         );
2500
2501
2502                         // update bdyear
2503
2504                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d",
2505                                 dbesc(substr($birthday,0,4)),
2506                                 intval($contact['uid']),
2507                                 intval($contact['id'])
2508                         );
2509
2510                         // This function is called twice without reloading the contact
2511                         // Make sure we only create one event. This is why &$contact
2512                         // is a reference var in this function
2513
2514                         $contact['bdyear'] = substr($birthday,0,4);
2515                 }
2516         }
2517
2518         $community_page = 0;
2519         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
2520         if($rawtags) {
2521                 $community_page = intval($rawtags[0]['data']);
2522         }
2523         if(is_array($contact) && intval($contact['forum']) != $community_page) {
2524                 q("update contact set forum = %d where id = %d",
2525                         intval($community_page),
2526                         intval($contact['id'])
2527                 );
2528                 $contact['forum'] = (string) $community_page;
2529         }
2530
2531
2532         // process any deleted entries
2533
2534         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
2535         if(is_array($del_entries) && count($del_entries) && $pass != 2) {
2536                 foreach($del_entries as $dentry) {
2537                         $deleted = false;
2538                         if(isset($dentry['attribs']['']['ref'])) {
2539                                 $uri = $dentry['attribs']['']['ref'];
2540                                 $deleted = true;
2541                                 if(isset($dentry['attribs']['']['when'])) {
2542                                         $when = $dentry['attribs']['']['when'];
2543                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
2544                                 }
2545                                 else
2546                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
2547                         }
2548                         if($deleted && is_array($contact)) {
2549                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN `contact` on `item`.`contact-id` = `contact`.`id`
2550                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
2551                                         dbesc($uri),
2552                                         intval($importer['uid']),
2553                                         intval($contact['id'])
2554                                 );
2555                                 if(count($r)) {
2556                                         $item = $r[0];
2557
2558                                         if(! $item['deleted'])
2559                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
2560
2561                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2562                                                 $xo = parse_xml_string($item['object'],false);
2563                                                 $xt = parse_xml_string($item['target'],false);
2564                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
2565                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
2566                                                                 dbesc($xt->id),
2567                                                                 intval($importer['importer_uid'])
2568                                                         );
2569                                                         if(count($i)) {
2570
2571                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
2572
2573                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
2574                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
2575                                                                 $author_copy = (($item['origin']) ? true : false);
2576
2577                                                                 if($owner_remove && $author_copy)
2578                                                                         continue;
2579                                                                 if($author_remove || $owner_remove) {
2580                                                                         $tags = explode(',',$i[0]['tag']);
2581                                                                         $newtags = array();
2582                                                                         if(count($tags)) {
2583                                                                                 foreach($tags as $tag)
2584                                                                                         if(trim($tag) !== trim($xo->body))
2585                                                                                                 $newtags[] = trim($tag);
2586                                                                         }
2587                                                                         q("update item set tag = '%s' where id = %d",
2588                                                                                 dbesc(implode(',',$newtags)),
2589                                                                                 intval($i[0]['id'])
2590                                                                         );
2591                                                                         create_tags_from_item($i[0]['id']);
2592                                                                 }
2593                                                         }
2594                                                 }
2595                                         }
2596
2597                                         if($item['uri'] == $item['parent-uri']) {
2598                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2599                                                         `body` = '', `title` = ''
2600                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
2601                                                         dbesc($when),
2602                                                         dbesc(datetime_convert()),
2603                                                         dbesc($item['uri']),
2604                                                         intval($importer['uid'])
2605                                                 );
2606                                                 create_tags_from_itemuri($item['uri'], $importer['uid']);
2607                                                 create_files_from_itemuri($item['uri'], $importer['uid']);
2608                                                 update_thread_uri($item['uri'], $importer['uid']);
2609                                         }
2610                                         else {
2611                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2612                                                         `body` = '', `title` = ''
2613                                                         WHERE `uri` = '%s' AND `uid` = %d",
2614                                                         dbesc($when),
2615                                                         dbesc(datetime_convert()),
2616                                                         dbesc($uri),
2617                                                         intval($importer['uid'])
2618                                                 );
2619                                                 create_tags_from_itemuri($uri, $importer['uid']);
2620                                                 create_files_from_itemuri($uri, $importer['uid']);
2621                                                 if($item['last-child']) {
2622                                                         // ensure that last-child is set in case the comment that had it just got wiped.
2623                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2624                                                                 dbesc(datetime_convert()),
2625                                                                 dbesc($item['parent-uri']),
2626                                                                 intval($item['uid'])
2627                                                         );
2628                                                         // who is the last child now?
2629                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `moderated` = 0 AND `uid` = %d
2630                                                                 ORDER BY `created` DESC LIMIT 1",
2631                                                                         dbesc($item['parent-uri']),
2632                                                                         intval($importer['uid'])
2633                                                         );
2634                                                         if(count($r)) {
2635                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2636                                                                         intval($r[0]['id'])
2637                                                                 );
2638                                                         }
2639                                                 }
2640                                         }
2641                                 }
2642                         }
2643                 }
2644         }
2645
2646         // Now process the feed
2647
2648         if($feed->get_item_quantity()) {
2649
2650                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
2651
2652         // in inverse date order
2653                 if ($datedir)
2654                         $items = array_reverse($feed->get_items());
2655                 else
2656                         $items = $feed->get_items();
2657
2658
2659                 foreach($items as $item) {
2660
2661                         $is_reply = false;
2662                         $item_id = $item->get_id();
2663                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
2664                         if(isset($rawthread[0]['attribs']['']['ref'])) {
2665                                 $is_reply = true;
2666                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
2667                         }
2668
2669                         if(($is_reply) && is_array($contact)) {
2670
2671                                 if($pass == 1)
2672                                         continue;
2673
2674                                 // not allowed to post
2675
2676                                 if($contact['rel'] == CONTACT_IS_FOLLOWER)
2677                                         continue;
2678
2679
2680                                 // Have we seen it? If not, import it.
2681
2682                                 $item_id  = $item->get_id();
2683                                 $datarray = get_atom_elements($feed, $item, $contact);
2684
2685                                 if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2686                                         $datarray['author-name'] = $contact['name'];
2687                                 if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2688                                         $datarray['author-link'] = $contact['url'];
2689                                 if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2690                                         $datarray['author-avatar'] = $contact['thumb'];
2691
2692                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2693                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2694                                         continue;
2695                                 }
2696
2697                                 $force_parent = false;
2698                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2699                                         if($contact['network'] === NETWORK_OSTATUS)
2700                                                 $force_parent = true;
2701                                         if(strlen($datarray['title']))
2702                                                 unset($datarray['title']);
2703                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2704                                                 dbesc(datetime_convert()),
2705                                                 dbesc($parent_uri),
2706                                                 intval($importer['uid'])
2707                                         );
2708                                         $datarray['last-child'] = 1;
2709                                         update_thread_uri($parent_uri, $importer['uid']);
2710                                 }
2711
2712
2713                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2714                                         dbesc($item_id),
2715                                         intval($importer['uid'])
2716                                 );
2717
2718                                 // Update content if 'updated' changes
2719
2720                                 if(count($r)) {
2721                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2722
2723                                                 // do not accept (ignore) an earlier edit than one we currently have.
2724                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2725                                                         continue;
2726
2727                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2728                                                         dbesc($datarray['title']),
2729                                                         dbesc($datarray['body']),
2730                                                         dbesc($datarray['tag']),
2731                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2732                                                         dbesc(datetime_convert()),
2733                                                         dbesc($item_id),
2734                                                         intval($importer['uid'])
2735                                                 );
2736                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2737                                                 update_thread_uri($item_id, $importer['uid']);
2738                                         }
2739
2740                                         // update last-child if it changes
2741
2742                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2743                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
2744                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2745                                                         dbesc(datetime_convert()),
2746                                                         dbesc($parent_uri),
2747                                                         intval($importer['uid'])
2748                                                 );
2749                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
2750                                                         intval($allow[0]['data']),
2751                                                         dbesc(datetime_convert()),
2752                                                         dbesc($item_id),
2753                                                         intval($importer['uid'])
2754                                                 );
2755                                                 update_thread_uri($item_id, $importer['uid']);
2756                                         }
2757                                         continue;
2758                                 }
2759
2760
2761                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2762                                         // one way feed - no remote comment ability
2763                                         $datarray['last-child'] = 0;
2764                                 }
2765                                 $datarray['parent-uri'] = $parent_uri;
2766                                 $datarray['uid'] = $importer['uid'];
2767                                 $datarray['contact-id'] = $contact['id'];
2768                                 if(($datarray['verb'] === ACTIVITY_LIKE)
2769                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
2770                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
2771                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
2772                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
2773                                         $datarray['type'] = 'activity';
2774                                         $datarray['gravity'] = GRAVITY_LIKE;
2775                                         // only one like or dislike per person
2776                                         // splitted into two queries for performance issues
2777                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
2778                                                 intval($datarray['uid']),
2779                                                 intval($datarray['contact-id']),
2780                                                 dbesc($datarray['verb']),
2781                                                 dbesc($parent_uri)
2782                                         );
2783                                         if($r && count($r))
2784                                                 continue;
2785
2786                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
2787                                                 intval($datarray['uid']),
2788                                                 intval($datarray['contact-id']),
2789                                                 dbesc($datarray['verb']),
2790                                                 dbesc($parent_uri)
2791                                         );
2792                                         if($r && count($r))
2793                                                 continue;
2794                                 }
2795
2796                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2797                                         $xo = parse_xml_string($datarray['object'],false);
2798                                         $xt = parse_xml_string($datarray['target'],false);
2799
2800                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
2801                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
2802                                                         dbesc($xt->id),
2803                                                         intval($importer['importer_uid'])
2804                                                 );
2805                                                 if(! count($r))
2806                                                         continue;
2807
2808                                                 // extract tag, if not duplicate, add to parent item
2809                                                 if($xo->id && $xo->content) {
2810                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
2811                                                         if(! (stristr($r[0]['tag'],$newtag))) {
2812                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
2813                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . $newtag),
2814                                                                         intval($r[0]['id'])
2815                                                                 );
2816                                                                 create_tags_from_item($r[0]['id']);
2817                                                         }
2818                                                 }
2819                                         }
2820                                 }
2821
2822                                 $r = item_store($datarray,$force_parent);
2823                                 continue;
2824                         }
2825
2826                         else {
2827
2828                                 // Head post of a conversation. Have we seen it? If not, import it.
2829
2830                                 $item_id  = $item->get_id();
2831
2832                                 $datarray = get_atom_elements($feed, $item, $contact);
2833
2834                                 if(is_array($contact)) {
2835                                         if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2836                                                 $datarray['author-name'] = $contact['name'];
2837                                         if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2838                                                 $datarray['author-link'] = $contact['url'];
2839                                         if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2840                                                 $datarray['author-avatar'] = $contact['thumb'];
2841                                 }
2842
2843                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2844                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2845                                         continue;
2846                                 }
2847
2848                                 // special handling for events
2849
2850                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
2851                                         $ev = bbtoevent($datarray['body']);
2852                                         if(x($ev,'desc') && x($ev,'start')) {
2853                                                 $ev['uid'] = $importer['uid'];
2854                                                 $ev['uri'] = $item_id;
2855                                                 $ev['edited'] = $datarray['edited'];
2856                                                 $ev['private'] = $datarray['private'];
2857
2858                                                 if(is_array($contact))
2859                                                         $ev['cid'] = $contact['id'];
2860                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2861                                                         dbesc($item_id),
2862                                                         intval($importer['uid'])
2863                                                 );
2864                                                 if(count($r))
2865                                                         $ev['id'] = $r[0]['id'];
2866                                                 $xyz = event_store($ev);
2867                                                 continue;
2868                                         }
2869                                 }
2870
2871                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2872                                         if(strlen($datarray['title']))
2873                                                 unset($datarray['title']);
2874                                         $datarray['last-child'] = 1;
2875                                 }
2876
2877
2878                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2879                                         dbesc($item_id),
2880                                         intval($importer['uid'])
2881                                 );
2882
2883                                 // Update content if 'updated' changes
2884
2885                                 if(count($r)) {
2886                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2887
2888                                                 // do not accept (ignore) an earlier edit than one we currently have.
2889                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2890                                                         continue;
2891
2892                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2893                                                         dbesc($datarray['title']),
2894                                                         dbesc($datarray['body']),
2895                                                         dbesc($datarray['tag']),
2896                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2897                                                         dbesc(datetime_convert()),
2898                                                         dbesc($item_id),
2899                                                         intval($importer['uid'])
2900                                                 );
2901                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2902                                                 update_thread_uri($item_id, $importer['uid']);
2903                                         }
2904
2905                                         // update last-child if it changes
2906
2907                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2908                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
2909                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2910                                                         intval($allow[0]['data']),
2911                                                         dbesc(datetime_convert()),
2912                                                         dbesc($item_id),
2913                                                         intval($importer['uid'])
2914                                                 );
2915                                                 update_thread_uri($item_id, $importer['uid']);
2916                                         }
2917                                         continue;
2918                                 }
2919
2920                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
2921                                         logger('consume-feed: New follower');
2922                                         new_follower($importer,$contact,$datarray,$item);
2923                                         return;
2924                                 }
2925                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
2926                                         lose_follower($importer,$contact,$datarray,$item);
2927                                         return;
2928                                 }
2929
2930                                 if(activity_match($datarray['verb'],ACTIVITY_REQ_FRIEND)) {
2931                                         logger('consume-feed: New friend request');
2932                                         new_follower($importer,$contact,$datarray,$item,true);
2933                                         return;
2934                                 }
2935                                 if(activity_match($datarray['verb'],ACTIVITY_UNFRIEND))  {
2936                                         lose_sharer($importer,$contact,$datarray,$item);
2937                                         return;
2938                                 }
2939
2940
2941                                 if(! is_array($contact))
2942                                         return;
2943
2944
2945                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2946                                                 // one way feed - no remote comment ability
2947                                                 $datarray['last-child'] = 0;
2948                                 }
2949                                 if($contact['network'] === NETWORK_FEED)
2950                                         $datarray['private'] = 2;
2951
2952                                 $datarray['parent-uri'] = $item_id;
2953                                 $datarray['uid'] = $importer['uid'];
2954                                 $datarray['contact-id'] = $contact['id'];
2955
2956                                 if(! link_compare($datarray['owner-link'],$contact['url'])) {
2957                                         // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
2958                                         // but otherwise there's a possible data mixup on the sender's system.
2959                                         // the tgroup delivery code called from item_store will correct it if it's a forum,
2960                                         // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
2961                                         logger('consume_feed: Correcting item owner.', LOGGER_DEBUG);
2962                                         $datarray['owner-name']   = $contact['name'];
2963                                         $datarray['owner-link']   = $contact['url'];
2964                                         $datarray['owner-avatar'] = $contact['thumb'];
2965                                 }
2966
2967                                 // We've allowed "followers" to reach this point so we can decide if they are
2968                                 // posting an @-tag delivery, which followers are allowed to do for certain
2969                                 // page types. Now that we've parsed the post, let's check if it is legit. Otherwise ignore it.
2970
2971                                 if(($contact['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['uid'],$datarray)))
2972                                         continue;
2973
2974                                 // This is my contact on another system, but it's really me.
2975                                 // Turn this into a wall post.
2976                                 $notify = item_is_remote_self($contact, $datarray);
2977
2978                                 $r = item_store($datarray, false, $notify);
2979                                 logger('Stored - Contact '.$contact['url'].' Notify '.$notify.' return '.$r.' Item '.print_r($datarray, true), LOGGER_DEBUG);
2980                                 continue;
2981
2982                         }
2983                 }
2984         }
2985 }
2986
2987 function item_is_remote_self($contact, &$datarray) {
2988         $a = get_app();
2989
2990         if (!$contact['remote_self'])
2991                 return false;
2992
2993         // Prevent the forwarding of posts that are forwarded
2994         if ($datarray["extid"] == NETWORK_DFRN)
2995                 return false;
2996
2997         // Prevent to forward already forwarded posts
2998         if ($datarray["app"] == $a->get_hostname())
2999                 return false;
3000
3001         // Only forward posts
3002         if ($datarray["verb"] != ACTIVITY_POST)
3003                 return false;
3004
3005         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
3006                 return false;
3007
3008         $datarray2 = $datarray;
3009         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
3010         if ($contact['remote_self'] == 2) {
3011                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
3012                         intval($contact['uid']));
3013                 if (count($r)) {
3014                         $datarray['contact-id'] = $r[0]["id"];
3015
3016                         $datarray['owner-name'] = $r[0]["name"];
3017                         $datarray['owner-link'] = $r[0]["url"];
3018                         $datarray['owner-avatar'] = $r[0]["thumb"];
3019
3020                         $datarray['author-name']   = $datarray['owner-name'];
3021                         $datarray['author-link']   = $datarray['owner-link'];
3022                         $datarray['author-avatar'] = $datarray['owner-avatar'];
3023                 }
3024
3025                 if ($contact['network'] != NETWORK_FEED) {
3026                         $datarray["guid"] = get_guid(32);
3027                         unset($datarray["plink"]);
3028                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
3029                         $datarray["parent-uri"] = $datarray["uri"];
3030                         $datarray["extid"] = $contact['network'];
3031                         $urlpart = parse_url($datarray2['author-link']);
3032                         $datarray["app"] = $urlpart["host"];
3033                 } else
3034                         $datarray['private'] = 0;
3035         }
3036
3037         if ($contact['network'] != NETWORK_FEED) {
3038                 // Store the original post
3039                 $r = item_store($datarray2, false, false);
3040                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
3041         } else
3042                 $datarray["app"] = "Feed";
3043
3044         return true;
3045 }
3046
3047 function local_delivery($importer,$data) {
3048         $a = get_app();
3049
3050         logger(__function__, LOGGER_TRACE);
3051
3052         if($importer['readonly']) {
3053                 // We aren't receiving stuff from this person. But we will quietly ignore them
3054                 // rather than a blatant "go away" message.
3055                 logger('local_delivery: ignoring');
3056                 return 0;
3057                 //NOTREACHED
3058         }
3059
3060         // Consume notification feed. This may differ from consuming a public feed in several ways
3061         // - might contain email or friend suggestions
3062         // - might contain remote followup to our message
3063         //              - in which case we need to accept it and then notify other conversants
3064         // - we may need to send various email notifications
3065
3066         $feed = new SimplePie();
3067         $feed->set_raw_data($data);
3068         $feed->enable_order_by_date(false);
3069         $feed->init();
3070
3071
3072         if($feed->error())
3073                 logger('local_delivery: Error parsing XML: ' . $feed->error());
3074
3075
3076         // Check at the feed level for updated contact name and/or photo
3077
3078         $name_updated  = '';
3079         $new_name = '';
3080         $photo_timestamp = '';
3081         $photo_url = '';
3082         $contact_updated = '';
3083
3084
3085         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
3086
3087 // Fallback should not be needed here. If it isn't DFRN it won't have DFRN updated tags
3088 //      if(! $rawtags)
3089 //              $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
3090
3091         if($rawtags) {
3092                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
3093                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
3094                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
3095                         $new_name = $elems['name'][0]['data'];
3096
3097                         // Manually checking for changed contact names
3098                         if (($new_name != $importer['name']) AND ($new_name != "") AND ($name_updated <= $importer['name-date'])) {
3099                                 $name_updated = date("c");
3100                                 $photo_timestamp = date("c");
3101                         }
3102                 }
3103                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
3104                         if ($photo_timestamp == "")
3105                                 $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
3106                         $photo_url = $elems['link'][0]['attribs']['']['href'];
3107                 }
3108         }
3109
3110         if(($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $importer['avatar-date'])) {
3111
3112                 $contact_updated = $photo_timestamp;
3113
3114                 logger('local_delivery: Updating photo for ' . $importer['name']);
3115                 require_once("include/Photo.php");
3116                 $photo_failure = false;
3117                 $have_photo = false;
3118
3119                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
3120                         intval($importer['id']),
3121                         intval($importer['importer_uid'])
3122                 );
3123                 if(count($r)) {
3124                         $resource_id = $r[0]['resource-id'];
3125                         $have_photo = true;
3126                 }
3127                 else {
3128                         $resource_id = photo_new_resource();
3129                 }
3130
3131                 $img_str = fetch_url($photo_url,true);
3132                 // guess mimetype from headers or filename
3133                 $type = guess_image_type($photo_url,true);
3134
3135
3136                 $img = new Photo($img_str, $type);
3137                 if($img->is_valid()) {
3138                         if($have_photo) {
3139                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
3140                                         dbesc($resource_id),
3141                                         intval($importer['id']),
3142                                         intval($importer['importer_uid'])
3143                                 );
3144                         }
3145
3146                         $img->scaleImageSquare(175);
3147
3148                         $hash = $resource_id;
3149                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 4);
3150
3151                         $img->scaleImage(80);
3152                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 5);
3153
3154                         $img->scaleImage(48);
3155                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 6);
3156
3157                         $a = get_app();
3158
3159                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
3160                                 WHERE `uid` = %d AND `id` = %d",
3161                                 dbesc(datetime_convert()),
3162                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.'.$img->getExt()),
3163                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.'.$img->getExt()),
3164                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.'.$img->getExt()),
3165                                 intval($importer['importer_uid']),
3166                                 intval($importer['id'])
3167                         );
3168                 }
3169         }
3170
3171         if(($name_updated) && (strlen($new_name)) && ($name_updated > $importer['name-date'])) {
3172                 if ($name_updated > $contact_updated)
3173                         $contact_updated = $name_updated;
3174
3175                 $r = q("select * from contact where uid = %d and id = %d limit 1",
3176                         intval($importer['importer_uid']),
3177                         intval($importer['id'])
3178                 );
3179
3180                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d",
3181                         dbesc(notags(trim($new_name))),
3182                         dbesc(datetime_convert()),
3183                         intval($importer['importer_uid']),
3184                         intval($importer['id'])
3185                 );
3186
3187                 // do our best to update the name on content items
3188
3189                 if(count($r)) {
3190                         q("update item set `author-name` = '%s' where `author-name` = '%s' and `author-link` = '%s' and uid = %d",
3191                                 dbesc(notags(trim($new_name))),
3192                                 dbesc($r[0]['name']),
3193                                 dbesc($r[0]['url']),
3194                                 intval($importer['importer_uid'])
3195                         );
3196                 }
3197         }
3198
3199         if ($contact_updated AND $new_name AND $photo_url)
3200                 poco_check($importer['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $importer['id'], $importer['importer_uid']);
3201
3202         // Currently unsupported - needs a lot of work
3203         $reloc = $feed->get_feed_tags( NAMESPACE_DFRN, 'relocate' );
3204         if(isset($reloc[0]['child'][NAMESPACE_DFRN])) {
3205                 $base = $reloc[0]['child'][NAMESPACE_DFRN];
3206                 $newloc = array();
3207                 $newloc['uid'] = $importer['importer_uid'];
3208                 $newloc['cid'] = $importer['id'];
3209                 $newloc['name'] = notags(unxmlify($base['name'][0]['data']));
3210                 $newloc['photo'] = notags(unxmlify($base['photo'][0]['data']));
3211                 $newloc['thumb'] = notags(unxmlify($base['thumb'][0]['data']));
3212                 $newloc['micro'] = notags(unxmlify($base['micro'][0]['data']));
3213                 $newloc['url'] = notags(unxmlify($base['url'][0]['data']));
3214                 $newloc['request'] = notags(unxmlify($base['request'][0]['data']));
3215                 $newloc['confirm'] = notags(unxmlify($base['confirm'][0]['data']));
3216                 $newloc['notify'] = notags(unxmlify($base['notify'][0]['data']));
3217                 $newloc['poll'] = notags(unxmlify($base['poll'][0]['data']));
3218                 $newloc['sitepubkey'] = notags(unxmlify($base['sitepubkey'][0]['data']));
3219                 /** relocated user must have original key pair */
3220                 /*$newloc['pubkey'] = notags(unxmlify($base['pubkey'][0]['data']));
3221                 $newloc['prvkey'] = notags(unxmlify($base['prvkey'][0]['data']));*/
3222
3223                 logger("items:relocate contact ".print_r($newloc, true).print_r($importer, true), LOGGER_DEBUG);
3224
3225                 // update contact
3226                 $r = q("SELECT photo, url FROM contact WHERE id=%d AND uid=%d;",
3227                         intval($importer['id']),
3228                         intval($importer['importer_uid']));
3229                 if ($r === false)
3230                         return 1;
3231                 $old = $r[0];
3232
3233                 $x = q("UPDATE contact SET
3234                                         name = '%s',
3235                                         photo = '%s',
3236                                         thumb = '%s',
3237                                         micro = '%s',
3238                                         url = '%s',
3239                                         nurl = '%s',
3240                                         request = '%s',
3241                                         confirm = '%s',
3242                                         notify = '%s',
3243                                         poll = '%s',
3244                                         `site-pubkey` = '%s'
3245                         WHERE id=%d AND uid=%d;",
3246                                         dbesc($newloc['name']),
3247                                         dbesc($newloc['photo']),
3248                                         dbesc($newloc['thumb']),
3249                                         dbesc($newloc['micro']),
3250                                         dbesc($newloc['url']),
3251                                         dbesc(normalise_link($newloc['url'])),
3252                                         dbesc($newloc['request']),
3253                                         dbesc($newloc['confirm']),
3254                                         dbesc($newloc['notify']),
3255                                         dbesc($newloc['poll']),
3256                                         dbesc($newloc['sitepubkey']),
3257                                         intval($importer['id']),
3258                                         intval($importer['importer_uid']));
3259
3260                 if ($x === false)
3261                         return 1;
3262                 // update items
3263                 $fields = array(
3264                         'owner-link' => array($old['url'], $newloc['url']),
3265                         'author-link' => array($old['url'], $newloc['url']),
3266                         'owner-avatar' => array($old['photo'], $newloc['photo']),
3267                         'author-avatar' => array($old['photo'], $newloc['photo']),
3268                         );
3269                 foreach ($fields as $n=>$f){
3270                         $x = q("UPDATE `item` SET `%s`='%s' WHERE `%s`='%s' AND uid=%d",
3271                                         $n, dbesc($f[1]),
3272                                         $n, dbesc($f[0]),
3273                                         intval($importer['importer_uid']));
3274                                 if ($x === false)
3275                                         return 1;
3276                         }
3277
3278                 // TODO
3279                 // merge with current record, current contents have priority
3280                 // update record, set url-updated
3281                 // update profile photos
3282                 // schedule a scan?
3283                 return 0;
3284         }
3285
3286
3287         // handle friend suggestion notification
3288
3289         $sugg = $feed->get_feed_tags( NAMESPACE_DFRN, 'suggest' );
3290         if(isset($sugg[0]['child'][NAMESPACE_DFRN])) {
3291                 $base = $sugg[0]['child'][NAMESPACE_DFRN];
3292                 $fsugg = array();
3293                 $fsugg['uid'] = $importer['importer_uid'];
3294                 $fsugg['cid'] = $importer['id'];
3295                 $fsugg['name'] = notags(unxmlify($base['name'][0]['data']));
3296                 $fsugg['photo'] = notags(unxmlify($base['photo'][0]['data']));
3297                 $fsugg['url'] = notags(unxmlify($base['url'][0]['data']));
3298                 $fsugg['request'] = notags(unxmlify($base['request'][0]['data']));
3299                 $fsugg['body'] = escape_tags(unxmlify($base['note'][0]['data']));
3300
3301                 // Does our member already have a friend matching this description?
3302
3303                 $r = q("SELECT * FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
3304                         dbesc($fsugg['name']),
3305                         dbesc(normalise_link($fsugg['url'])),
3306                         intval($fsugg['uid'])
3307                 );
3308                 if(count($r))
3309                         return 0;
3310
3311                 // Do we already have an fcontact record for this person?
3312
3313                 $fid = 0;
3314                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3315                         dbesc($fsugg['url']),
3316                         dbesc($fsugg['name']),
3317                         dbesc($fsugg['request'])
3318                 );
3319                 if(count($r)) {
3320                         $fid = $r[0]['id'];
3321
3322                         // OK, we do. Do we already have an introduction for this person ?
3323                         $r = q("select id from intro where uid = %d and fid = %d limit 1",
3324                                 intval($fsugg['uid']),
3325                                 intval($fid)
3326                         );
3327                         if(count($r))
3328                                 return 0;
3329                 }
3330                 if(! $fid)
3331                         $r = q("INSERT INTO `fcontact` ( `name`,`url`,`photo`,`request` ) VALUES ( '%s', '%s', '%s', '%s' ) ",
3332                         dbesc($fsugg['name']),
3333                         dbesc($fsugg['url']),
3334                         dbesc($fsugg['photo']),
3335                         dbesc($fsugg['request'])
3336                 );
3337                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3338                         dbesc($fsugg['url']),
3339                         dbesc($fsugg['name']),
3340                         dbesc($fsugg['request'])
3341                 );
3342                 if(count($r)) {
3343                         $fid = $r[0]['id'];
3344                 }
3345                 // database record did not get created. Quietly give up.
3346                 else
3347                         return 0;
3348
3349
3350                 $hash = random_string();
3351
3352                 $r = q("INSERT INTO `intro` ( `uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked` )
3353                         VALUES( %d, %d, %d, '%s', '%s', '%s', %d )",
3354                         intval($fsugg['uid']),
3355                         intval($fid),
3356                         intval($fsugg['cid']),
3357                         dbesc($fsugg['body']),
3358                         dbesc($hash),
3359                         dbesc(datetime_convert()),
3360                         intval(0)
3361                 );
3362
3363                 notification(array(
3364                         'type'         => NOTIFY_SUGGEST,
3365                         'notify_flags' => $importer['notify-flags'],
3366                         'language'     => $importer['language'],
3367                         'to_name'      => $importer['username'],
3368                         'to_email'     => $importer['email'],
3369                         'uid'          => $importer['importer_uid'],
3370                         'item'         => $fsugg,
3371                         'link'         => $a->get_baseurl() . '/notifications/intros',
3372                         'source_name'  => $importer['name'],
3373                         'source_link'  => $importer['url'],
3374                         'source_photo' => $importer['photo'],
3375                         'verb'         => ACTIVITY_REQ_FRIEND,
3376                         'otype'        => 'intro'
3377                 ));
3378
3379                 return 0;
3380         }
3381
3382         $ismail = false;
3383
3384         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
3385         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
3386
3387                 logger('local_delivery: private message received');
3388
3389                 $ismail = true;
3390                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
3391
3392                 $msg = array();
3393                 $msg['uid'] = $importer['importer_uid'];
3394                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
3395                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
3396                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
3397                 $msg['contact-id'] = $importer['id'];
3398                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
3399                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
3400                 $msg['seen'] = 0;
3401                 $msg['replied'] = 0;
3402                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
3403                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
3404                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
3405
3406                 dbesc_array($msg);
3407
3408                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
3409                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
3410
3411                 // send notifications.
3412
3413                 require_once('include/enotify.php');
3414
3415                 $notif_params = array(
3416                         'type' => NOTIFY_MAIL,
3417                         'notify_flags' => $importer['notify-flags'],
3418                         'language' => $importer['language'],
3419                         'to_name' => $importer['username'],
3420                         'to_email' => $importer['email'],
3421                         'uid' => $importer['importer_uid'],
3422                         'item' => $msg,
3423                         'source_name' => $msg['from-name'],
3424                         'source_link' => $importer['url'],
3425                         'source_photo' => $importer['thumb'],
3426                         'verb' => ACTIVITY_POST,
3427                         'otype' => 'mail'
3428                 );
3429
3430                 notification($notif_params);
3431                 return 0;
3432
3433                 // NOTREACHED
3434         }
3435
3436         $community_page = 0;
3437         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
3438         if($rawtags) {
3439                 $community_page = intval($rawtags[0]['data']);
3440         }
3441         if(intval($importer['forum']) != $community_page) {
3442                 q("update contact set forum = %d where id = %d",
3443                         intval($community_page),
3444                         intval($importer['id'])
3445                 );
3446                 $importer['forum'] = (string) $community_page;
3447         }
3448
3449         logger('local_delivery: feed item count = ' . $feed->get_item_quantity());
3450
3451         // process any deleted entries
3452
3453         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
3454         if(is_array($del_entries) && count($del_entries)) {
3455                 foreach($del_entries as $dentry) {
3456                         $deleted = false;
3457                         if(isset($dentry['attribs']['']['ref'])) {
3458                                 $uri = $dentry['attribs']['']['ref'];
3459                                 $deleted = true;
3460                                 if(isset($dentry['attribs']['']['when'])) {
3461                                         $when = $dentry['attribs']['']['when'];
3462                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
3463                                 }
3464                                 else
3465                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
3466                         }
3467                         if($deleted) {
3468
3469                                 // check for relayed deletes to our conversation
3470
3471                                 $is_reply = false;
3472                                 $r = q("select * from item where uri = '%s' and uid = %d limit 1",
3473                                         dbesc($uri),
3474                                         intval($importer['importer_uid'])
3475                                 );
3476                                 if(count($r)) {
3477                                         $parent_uri = $r[0]['parent-uri'];
3478                                         if($r[0]['id'] != $r[0]['parent'])
3479                                                 $is_reply = true;
3480                                 }
3481
3482                                 if($is_reply) {
3483                                         $community = false;
3484
3485                                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3486                                                 $sql_extra = '';
3487                                                 $community = true;
3488                                                 logger('local_delivery: possible community delete');
3489                                         }
3490                                         else
3491                                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3492
3493                                         // was the top-level post for this reply written by somebody on this site?
3494                                         // Specifically, the recipient?
3495
3496                                         $is_a_remote_delete = false;
3497
3498                                         // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3499                                         $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3500                                                 `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3501                                                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3502                                                 WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3503                                                 AND `item`.`uid` = %d
3504                                                 $sql_extra
3505                                                 LIMIT 1",
3506                                                 dbesc($parent_uri),
3507                                                 dbesc($parent_uri),
3508                                                 dbesc($parent_uri),
3509                                                 intval($importer['importer_uid'])
3510                                         );
3511                                         if($r && count($r))
3512                                                 $is_a_remote_delete = true;
3513
3514                                         // Does this have the characteristics of a community or private group comment?
3515                                         // If it's a reply to a wall post on a community/prvgroup page it's a
3516                                         // valid community comment. Also forum_mode makes it valid for sure.
3517                                         // If neither, it's not.
3518
3519                                         if($is_a_remote_delete && $community) {
3520                                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3521                                                         $is_a_remote_delete = false;
3522                                                         logger('local_delivery: not a community delete');
3523                                                 }
3524                                         }
3525
3526                                         if($is_a_remote_delete) {
3527                                                 logger('local_delivery: received remote delete');
3528                                         }
3529                                 }
3530
3531                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN contact on `item`.`contact-id` = `contact`.`id`
3532                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
3533                                         dbesc($uri),
3534                                         intval($importer['importer_uid']),
3535                                         intval($importer['id'])
3536                                 );
3537
3538                                 if(count($r)) {
3539                                         $item = $r[0];
3540
3541                                         if($item['deleted'])
3542                                                 continue;
3543
3544                                         logger('local_delivery: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
3545
3546                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3547                                                 $xo = parse_xml_string($item['object'],false);
3548                                                 $xt = parse_xml_string($item['target'],false);
3549
3550                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
3551                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
3552                                                                 dbesc($xt->id),
3553                                                                 intval($importer['importer_uid'])
3554                                                         );
3555                                                         if(count($i)) {
3556
3557                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
3558
3559                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
3560                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
3561                                                                 $author_copy = (($item['origin']) ? true : false);
3562
3563                                                                 if($owner_remove && $author_copy)
3564                                                                         continue;
3565                                                                 if($author_remove || $owner_remove) {
3566                                                                         $tags = explode(',',$i[0]['tag']);
3567                                                                         $newtags = array();
3568                                                                         if(count($tags)) {
3569                                                                                 foreach($tags as $tag)
3570                                                                                         if(trim($tag) !== trim($xo->body))
3571                                                                                                 $newtags[] = trim($tag);
3572                                                                         }
3573                                                                         q("update item set tag = '%s' where id = %d",
3574                                                                                 dbesc(implode(',',$newtags)),
3575                                                                                 intval($i[0]['id'])
3576                                                                         );
3577                                                                         create_tags_from_item($i[0]['id']);
3578                                                                 }
3579                                                         }
3580                                                 }
3581                                         }
3582
3583                                         if($item['uri'] == $item['parent-uri']) {
3584                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3585                                                         `body` = '', `title` = ''
3586                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
3587                                                         dbesc($when),
3588                                                         dbesc(datetime_convert()),
3589                                                         dbesc($item['uri']),
3590                                                         intval($importer['importer_uid'])
3591                                                 );
3592                                                 create_tags_from_itemuri($item['uri'], $importer['importer_uid']);
3593                                                 create_files_from_itemuri($item['uri'], $importer['importer_uid']);
3594                                                 update_thread_uri($item['uri'], $importer['importer_uid']);
3595                                         }
3596                                         else {
3597                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3598                                                         `body` = '', `title` = ''
3599                                                         WHERE `uri` = '%s' AND `uid` = %d",
3600                                                         dbesc($when),
3601                                                         dbesc(datetime_convert()),
3602                                                         dbesc($uri),
3603                                                         intval($importer['importer_uid'])
3604                                                 );
3605                                                 create_tags_from_itemuri($uri, $importer['importer_uid']);
3606                                                 create_files_from_itemuri($uri, $importer['importer_uid']);
3607                                                 update_thread_uri($uri, $importer['importer_uid']);
3608                                                 if($item['last-child']) {
3609                                                         // ensure that last-child is set in case the comment that had it just got wiped.
3610                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
3611                                                                 dbesc(datetime_convert()),
3612                                                                 dbesc($item['parent-uri']),
3613                                                                 intval($item['uid'])
3614                                                         );
3615                                                         // who is the last child now?
3616                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
3617                                                                 ORDER BY `created` DESC LIMIT 1",
3618                                                                         dbesc($item['parent-uri']),
3619                                                                         intval($importer['importer_uid'])
3620                                                         );
3621                                                         if(count($r)) {
3622                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
3623                                                                         intval($r[0]['id'])
3624                                                                 );
3625                                                         }
3626                                                 }
3627                                                 // if this is a relayed delete, propagate it to other recipients
3628
3629                                                 if($is_a_remote_delete)
3630                                                         proc_run('php',"include/notifier.php","drop",$item['id']);
3631                                         }
3632                                 }
3633                         }
3634                 }
3635         }
3636
3637
3638         foreach($feed->get_items() as $item) {
3639
3640                 $is_reply = false;
3641                 $item_id = $item->get_id();
3642                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
3643                 if(isset($rawthread[0]['attribs']['']['ref'])) {
3644                         $is_reply = true;
3645                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
3646                 }
3647
3648                 if($is_reply) {
3649                         $community = false;
3650
3651                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3652                                 $sql_extra = '';
3653                                 $community = true;
3654                                 logger('local_delivery: possible community reply');
3655                         }
3656                         else
3657                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3658
3659                         // was the top-level post for this reply written by somebody on this site?
3660                         // Specifically, the recipient?
3661
3662                         $is_a_remote_comment = false;
3663                         $top_uri = $parent_uri;
3664
3665                         $r = q("select `item`.`parent-uri` from `item`
3666                                 WHERE `item`.`uri` = '%s'
3667                                 LIMIT 1",
3668                                 dbesc($parent_uri)
3669                         );
3670                         if($r && count($r)) {
3671                                 $top_uri = $r[0]['parent-uri'];
3672
3673                                 // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3674                                 $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3675                                         `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3676                                         INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3677                                         WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3678                                         AND `item`.`uid` = %d
3679                                         $sql_extra
3680                                         LIMIT 1",
3681                                         dbesc($top_uri),
3682                                         dbesc($top_uri),
3683                                         dbesc($top_uri),
3684                                         intval($importer['importer_uid'])
3685                                 );
3686                                 if($r && count($r))
3687                                         $is_a_remote_comment = true;
3688                         }
3689
3690                         // Does this have the characteristics of a community or private group comment?
3691                         // If it's a reply to a wall post on a community/prvgroup page it's a
3692                         // valid community comment. Also forum_mode makes it valid for sure.
3693                         // If neither, it's not.
3694
3695                         if($is_a_remote_comment && $community) {
3696                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3697                                         $is_a_remote_comment = false;
3698                                         logger('local_delivery: not a community reply');
3699                                 }
3700                         }
3701
3702                         if($is_a_remote_comment) {
3703                                 logger('local_delivery: received remote comment');
3704                                 $is_like = false;
3705                                 // remote reply to our post. Import and then notify everybody else.
3706
3707                                 $datarray = get_atom_elements($feed, $item);
3708
3709                                 $r = q("SELECT `id`, `uid`, `last-child`, `edited`, `body`  FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3710                                         dbesc($item_id),
3711                                         intval($importer['importer_uid'])
3712                                 );
3713
3714                                 // Update content if 'updated' changes
3715
3716                                 if(count($r)) {
3717                                         $iid = $r[0]['id'];
3718                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3719
3720                                                 // do not accept (ignore) an earlier edit than one we currently have.
3721                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3722                                                         continue;
3723
3724                                                 logger('received updated comment' , LOGGER_DEBUG);
3725                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3726                                                         dbesc($datarray['title']),
3727                                                         dbesc($datarray['body']),
3728                                                         dbesc($datarray['tag']),
3729                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3730                                                         dbesc(datetime_convert()),
3731                                                         dbesc($item_id),
3732                                                         intval($importer['importer_uid'])
3733                                                 );
3734                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3735
3736                                                 proc_run('php',"include/notifier.php","comment-import",$iid);
3737
3738                                         }
3739
3740                                         continue;
3741                                 }
3742
3743
3744
3745                                 $own = q("select name,url,thumb from contact where uid = %d and self = 1 limit 1",
3746                                         intval($importer['importer_uid'])
3747                                 );
3748
3749
3750                                 $datarray['type'] = 'remote-comment';
3751                                 $datarray['wall'] = 1;
3752                                 $datarray['parent-uri'] = $parent_uri;
3753                                 $datarray['uid'] = $importer['importer_uid'];
3754                                 $datarray['owner-name'] = $own[0]['name'];
3755                                 $datarray['owner-link'] = $own[0]['url'];
3756                                 $datarray['owner-avatar'] = $own[0]['thumb'];
3757                                 $datarray['contact-id'] = $importer['id'];
3758
3759                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3760                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3761                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3762                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3763                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3764                                         $is_like = true;
3765                                         $datarray['type'] = 'activity';
3766                                         $datarray['gravity'] = GRAVITY_LIKE;
3767                                         $datarray['last-child'] = 0;
3768                                         // only one like or dislike per person
3769                                         // splitted into two queries for performance issues
3770                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`parent-uri` = '%s') and deleted = 0 limit 1",
3771                                                 intval($datarray['uid']),
3772                                                 intval($datarray['contact-id']),
3773                                                 dbesc($datarray['verb']),
3774                                                 dbesc($datarray['parent-uri'])
3775
3776                                         );
3777                                         if($r && count($r))
3778                                                 continue;
3779
3780                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`thr-parent` = '%s') and deleted = 0 limit 1",
3781                                                 intval($datarray['uid']),
3782                                                 intval($datarray['contact-id']),
3783                                                 dbesc($datarray['verb']),
3784                                                 dbesc($datarray['parent-uri'])
3785
3786                                         );
3787                                         if($r && count($r))
3788                                                 continue;
3789                                 }
3790
3791                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3792
3793                                         $xo = parse_xml_string($datarray['object'],false);
3794                                         $xt = parse_xml_string($datarray['target'],false);
3795
3796                                         if(($xt->type == ACTIVITY_OBJ_NOTE) && ($xt->id)) {
3797
3798                                                 // fetch the parent item
3799
3800                                                 $tagp = q("select * from item where uri = '%s' and uid = %d limit 1",
3801                                                         dbesc($xt->id),
3802                                                         intval($importer['importer_uid'])
3803                                                 );
3804                                                 if(! count($tagp))
3805                                                         continue;
3806
3807                                                 // extract tag, if not duplicate, and this user allows tags, add to parent item
3808
3809                                                 if($xo->id && $xo->content) {
3810                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
3811                                                         if(! (stristr($tagp[0]['tag'],$newtag))) {
3812                                                                 $i = q("SELECT `blocktags` FROM `user` where `uid` = %d LIMIT 1",
3813                                                                         intval($importer['importer_uid'])
3814                                                                 );
3815                                                                 if(count($i) && ! intval($i[0]['blocktags'])) {
3816                                                                         q("UPDATE item SET tag = '%s', `edited` = '%s', `changed` = '%s' WHERE id = %d",
3817                                                                                 dbesc($tagp[0]['tag'] . (strlen($tagp[0]['tag']) ? ',' : '') . $newtag),
3818                                                                                 intval($tagp[0]['id']),
3819                                                                                 dbesc(datetime_convert()),
3820                                                                                 dbesc(datetime_convert())
3821                                                                         );
3822                                                                         create_tags_from_item($tagp[0]['id']);
3823                                                                 }
3824                                                         }
3825                                                 }
3826                                         }
3827                                 }
3828
3829
3830                                 $posted_id = item_store($datarray);
3831                                 $parent = 0;
3832
3833                                 if($posted_id) {
3834
3835                                         $datarray["id"] = $posted_id;
3836
3837                                         $r = q("SELECT `parent`, `parent-uri` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3838                                                 intval($posted_id),
3839                                                 intval($importer['importer_uid'])
3840                                         );
3841                                         if(count($r)) {
3842                                                 $parent = $r[0]['parent'];
3843                                                 $parent_uri = $r[0]['parent-uri'];
3844                                         }
3845
3846                                         if(! $is_like) {
3847                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
3848                                                         dbesc(datetime_convert()),
3849                                                         intval($importer['importer_uid']),
3850                                                         intval($r[0]['parent'])
3851                                                 );
3852
3853                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d",
3854                                                         dbesc(datetime_convert()),
3855                                                         intval($importer['importer_uid']),
3856                                                         intval($posted_id)
3857                                                 );
3858                                         }
3859
3860                                         if($posted_id && $parent) {
3861
3862                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
3863
3864                                                 if((! $is_like) && (! $importer['self'])) {
3865
3866                                                         require_once('include/enotify.php');
3867
3868                                                         notification(array(
3869                                                                 'type'         => NOTIFY_COMMENT,
3870                                                                 'notify_flags' => $importer['notify-flags'],
3871                                                                 'language'     => $importer['language'],
3872                                                                 'to_name'      => $importer['username'],
3873                                                                 'to_email'     => $importer['email'],
3874                                                                 'uid'          => $importer['importer_uid'],
3875                                                                 'item'         => $datarray,
3876                                                                 'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
3877                                                                 'source_name'  => stripslashes($datarray['author-name']),
3878                                                                 'source_link'  => $datarray['author-link'],
3879                                                                 'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
3880                                                                         ? $importer['thumb'] : $datarray['author-avatar']),
3881                                                                 'verb'         => ACTIVITY_POST,
3882                                                                 'otype'        => 'item',
3883                                                                 'parent'       => $parent,
3884                                                                 'parent_uri'   => $parent_uri,
3885                                                         ));
3886
3887                                                 }
3888                                         }
3889
3890                                         return 0;
3891                                         // NOTREACHED
3892                                 }
3893                         }
3894                         else {
3895
3896                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
3897
3898                                 $item_id  = $item->get_id();
3899                                 $datarray = get_atom_elements($feed,$item);
3900
3901                                 if($importer['rel'] == CONTACT_IS_FOLLOWER)
3902                                         continue;
3903
3904                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3905                                         dbesc($item_id),
3906                                         intval($importer['importer_uid'])
3907                                 );
3908
3909                                 // Update content if 'updated' changes
3910
3911                                 if(count($r)) {
3912                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3913
3914                                                 // do not accept (ignore) an earlier edit than one we currently have.
3915                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3916                                                         continue;
3917
3918                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3919                                                         dbesc($datarray['title']),
3920                                                         dbesc($datarray['body']),
3921                                                         dbesc($datarray['tag']),
3922                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3923                                                         dbesc(datetime_convert()),
3924                                                         dbesc($item_id),
3925                                                         intval($importer['importer_uid'])
3926                                                 );
3927                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3928                                         }
3929
3930                                         // update last-child if it changes
3931
3932                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
3933                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
3934                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
3935                                                         dbesc(datetime_convert()),
3936                                                         dbesc($parent_uri),
3937                                                         intval($importer['importer_uid'])
3938                                                 );
3939                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
3940                                                         intval($allow[0]['data']),
3941                                                         dbesc(datetime_convert()),
3942                                                         dbesc($item_id),
3943                                                         intval($importer['importer_uid'])
3944                                                 );
3945                                         }
3946                                         continue;
3947                                 }
3948
3949                                 $datarray['parent-uri'] = $parent_uri;
3950                                 $datarray['uid'] = $importer['importer_uid'];
3951                                 $datarray['contact-id'] = $importer['id'];
3952                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3953                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3954                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3955                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3956                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3957                                         $datarray['type'] = 'activity';
3958                                         $datarray['gravity'] = GRAVITY_LIKE;
3959                                         // only one like or dislike per person
3960                                         // splitted into two queries for performance issues
3961                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
3962                                                 intval($datarray['uid']),
3963                                                 intval($datarray['contact-id']),
3964                                                 dbesc($datarray['verb']),
3965                                                 dbesc($parent_uri)
3966                                         );
3967                                         if($r && count($r))
3968                                                 continue;
3969
3970                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
3971                                                 intval($datarray['uid']),
3972                                                 intval($datarray['contact-id']),
3973                                                 dbesc($datarray['verb']),
3974                                                 dbesc($parent_uri)
3975                                         );
3976                                         if($r && count($r))
3977                                                 continue;
3978
3979                                 }
3980
3981                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3982
3983                                         $xo = parse_xml_string($datarray['object'],false);
3984                                         $xt = parse_xml_string($datarray['target'],false);
3985
3986                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
3987                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
3988                                                         dbesc($xt->id),
3989                                                         intval($importer['importer_uid'])
3990                                                 );
3991                                                 if(! count($r))
3992                                                         continue;
3993
3994                                                 // extract tag, if not duplicate, add to parent item
3995                                                 if($xo->content) {
3996                                                         if(! (stristr($r[0]['tag'],trim($xo->content)))) {
3997                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
3998                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
3999                                                                         intval($r[0]['id'])
4000                                                                 );
4001                                                                 create_tags_from_item($r[0]['id']);
4002                                                         }
4003                                                 }
4004                                         }
4005                                 }
4006
4007                                 $posted_id = item_store($datarray);
4008
4009                                 // find out if our user is involved in this conversation and wants to be notified.
4010
4011                                 if(!x($datarray['type']) || $datarray['type'] != 'activity') {
4012
4013                                         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0",
4014                                                 dbesc($top_uri),
4015                                                 intval($importer['importer_uid'])
4016                                         );
4017
4018                                         if(count($myconv)) {
4019                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
4020
4021                                                 // first make sure this isn't our own post coming back to us from a wall-to-wall event
4022                                                 if(! link_compare($datarray['author-link'],$importer_url)) {
4023
4024
4025                                                         foreach($myconv as $conv) {
4026
4027                                                                 // now if we find a match, it means we're in this conversation
4028
4029                                                                 if(! link_compare($conv['author-link'],$importer_url))
4030                                                                         continue;
4031
4032                                                                 require_once('include/enotify.php');
4033
4034                                                                 $conv_parent = $conv['parent'];
4035
4036                                                                 notification(array(
4037                                                                         'type'         => NOTIFY_COMMENT,
4038                                                                         'notify_flags' => $importer['notify-flags'],
4039                                                                         'language'     => $importer['language'],
4040                                                                         'to_name'      => $importer['username'],
4041                                                                         'to_email'     => $importer['email'],
4042                                                                         'uid'          => $importer['importer_uid'],
4043                                                                         'item'         => $datarray,
4044                                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4045                                                                         'source_name'  => stripslashes($datarray['author-name']),
4046                                                                         'source_link'  => $datarray['author-link'],
4047                                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4048                                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4049                                                                         'verb'         => ACTIVITY_POST,
4050                                                                         'otype'        => 'item',
4051                                                                         'parent'       => $conv_parent,
4052                                                                         'parent_uri'   => $parent_uri
4053
4054                                                                 ));
4055
4056                                                                 // only send one notification
4057                                                                 break;
4058                                                         }
4059                                                 }
4060                                         }
4061                                 }
4062                                 continue;
4063                         }
4064                 }
4065
4066                 else {
4067
4068                         // Head post of a conversation. Have we seen it? If not, import it.
4069
4070
4071                         $item_id  = $item->get_id();
4072                         $datarray = get_atom_elements($feed,$item);
4073
4074                         if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
4075                                 $ev = bbtoevent($datarray['body']);
4076                                 if(x($ev,'desc') && x($ev,'start')) {
4077                                         $ev['cid'] = $importer['id'];
4078                                         $ev['uid'] = $importer['uid'];
4079                                         $ev['uri'] = $item_id;
4080                                         $ev['edited'] = $datarray['edited'];
4081                                         $ev['private'] = $datarray['private'];
4082
4083                                         $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4084                                                 dbesc($item_id),
4085                                                 intval($importer['uid'])
4086                                         );
4087                                         if(count($r))
4088                                                 $ev['id'] = $r[0]['id'];
4089                                         $xyz = event_store($ev);
4090                                         continue;
4091                                 }
4092                         }
4093
4094                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4095                                 dbesc($item_id),
4096                                 intval($importer['importer_uid'])
4097                         );
4098
4099                         // Update content if 'updated' changes
4100
4101                         if(count($r)) {
4102                                 if (edited_timestamp_is_newer($r[0], $datarray)) {
4103
4104                                         // do not accept (ignore) an earlier edit than one we currently have.
4105                                         if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
4106                                                 continue;
4107
4108                                         $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4109                                                 dbesc($datarray['title']),
4110                                                 dbesc($datarray['body']),
4111                                                 dbesc($datarray['tag']),
4112                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
4113                                                 dbesc(datetime_convert()),
4114                                                 dbesc($item_id),
4115                                                 intval($importer['importer_uid'])
4116                                         );
4117                                         create_tags_from_itemuri($item_id, $importer['importer_uid']);
4118                                         update_thread_uri($item_id, $importer['importer_uid']);
4119                                 }
4120
4121                                 // update last-child if it changes
4122
4123                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
4124                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
4125                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4126                                                 intval($allow[0]['data']),
4127                                                 dbesc(datetime_convert()),
4128                                                 dbesc($item_id),
4129                                                 intval($importer['importer_uid'])
4130                                         );
4131                                 }
4132                                 continue;
4133                         }
4134
4135                         $datarray['parent-uri'] = $item_id;
4136                         $datarray['uid'] = $importer['importer_uid'];
4137                         $datarray['contact-id'] = $importer['id'];
4138
4139
4140                         if(! link_compare($datarray['owner-link'],$importer['url'])) {
4141                                 // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
4142                                 // but otherwise there's a possible data mixup on the sender's system.
4143                                 // the tgroup delivery code called from item_store will correct it if it's a forum,
4144                                 // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
4145                                 logger('local_delivery: Correcting item owner.', LOGGER_DEBUG);
4146                                 $datarray['owner-name']   = $importer['senderName'];
4147                                 $datarray['owner-link']   = $importer['url'];
4148                                 $datarray['owner-avatar'] = $importer['thumb'];
4149                         }
4150
4151                         if(($importer['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['importer_uid'],$datarray)))
4152                                 continue;
4153
4154                         // This is my contact on another system, but it's really me.
4155                         // Turn this into a wall post.
4156                         $notify = item_is_remote_self($importer, $datarray);
4157
4158                         $posted_id = item_store($datarray, false, $notify);
4159
4160                         if(stristr($datarray['verb'],ACTIVITY_POKE)) {
4161                                 $verb = urldecode(substr($datarray['verb'],strpos($datarray['verb'],'#')+1));
4162                                 if(! $verb)
4163                                         continue;
4164                                 $xo = parse_xml_string($datarray['object'],false);
4165
4166                                 if(($xo->type == ACTIVITY_OBJ_PERSON) && ($xo->id)) {
4167
4168                                         // somebody was poked/prodded. Was it me?
4169
4170                                         $links = parse_xml_string("<links>".unxmlify($xo->link)."</links>",false);
4171
4172                                 foreach($links->link as $l) {
4173                                 $atts = $l->attributes();
4174                                 switch($atts['rel']) {
4175                                         case "alternate":
4176                                                                 $Blink = $atts['href'];
4177                                                                 break;
4178                                                         default:
4179                                                                 break;
4180                                     }
4181                                 }
4182                                         if($Blink && link_compare($Blink,$a->get_baseurl() . '/profile/' . $importer['nickname'])) {
4183
4184                                                 // send a notification
4185                                                 require_once('include/enotify.php');
4186
4187                                                 notification(array(
4188                                                         'type'         => NOTIFY_POKE,
4189                                                         'notify_flags' => $importer['notify-flags'],
4190                                                         'language'     => $importer['language'],
4191                                                         'to_name'      => $importer['username'],
4192                                                         'to_email'     => $importer['email'],
4193                                                         'uid'          => $importer['importer_uid'],
4194                                                         'item'         => $datarray,
4195                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4196                                                         'source_name'  => stripslashes($datarray['author-name']),
4197                                                         'source_link'  => $datarray['author-link'],
4198                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4199                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4200                                                         'verb'         => $datarray['verb'],
4201                                                         'otype'        => 'person',
4202                                                         'activity'     => $verb,
4203                                                         'parent'       => $datarray['parent']
4204                                                 ));
4205                                         }
4206                                 }
4207                         }
4208
4209                         continue;
4210                 }
4211         }
4212
4213         return 0;
4214         // NOTREACHED
4215
4216 }
4217
4218
4219 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
4220         $url = notags(trim($datarray['author-link']));
4221         $name = notags(trim($datarray['author-name']));
4222         $photo = notags(trim($datarray['author-avatar']));
4223
4224         if (is_object($item)) {
4225                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
4226                 if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
4227                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
4228         } else
4229                 $nick = $item;
4230
4231         if(is_array($contact)) {
4232                 if(($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
4233                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
4234                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
4235                                 intval(CONTACT_IS_FRIEND),
4236                                 intval($contact['id']),
4237                                 intval($importer['uid'])
4238                         );
4239                 }
4240                 // send email notification to owner?
4241         }
4242         else {
4243
4244                 // create contact record
4245
4246                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
4247                         `blocked`, `readonly`, `pending`, `writable` )
4248                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
4249                         intval($importer['uid']),
4250                         dbesc(datetime_convert()),
4251                         dbesc($url),
4252                         dbesc(normalise_link($url)),
4253                         dbesc($name),
4254                         dbesc($nick),
4255                         dbesc($photo),
4256                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
4257                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
4258                 );
4259                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
4260                                 intval($importer['uid']),
4261                                 dbesc($url)
4262                 );
4263                 if(count($r))
4264                                 $contact_record = $r[0];
4265
4266                 // create notification
4267                 $hash = random_string();
4268
4269                 if(is_array($contact_record)) {
4270                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
4271                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
4272                                 intval($importer['uid']),
4273                                 intval($contact_record['id']),
4274                                 dbesc($hash),
4275                                 dbesc(datetime_convert())
4276                         );
4277                 }
4278
4279                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
4280                         intval($importer['uid'])
4281                 );
4282                 $a = get_app();
4283                 if(count($r)) {
4284
4285                         if(intval($r[0]['def_gid'])) {
4286                                 require_once('include/group.php');
4287                                 group_add_member($r[0]['uid'],'',$contact_record['id'],$r[0]['def_gid']);
4288                         }
4289
4290                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) &&
4291                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE))) {
4292
4293                                 notification(array(
4294                                         'type'         => NOTIFY_INTRO,
4295                                         'notify_flags' => $r[0]['notify-flags'],
4296                                         'language'     => $r[0]['language'],
4297                                         'to_name'      => $r[0]['username'],
4298                                         'to_email'     => $r[0]['email'],
4299                                         'uid'          => $r[0]['uid'],
4300                                         'link'             => $a->get_baseurl() . '/notifications/intro',
4301                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
4302                                         'source_link'  => $contact_record['url'],
4303                                         'source_photo' => $contact_record['photo'],
4304                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
4305                                         'otype'        => 'intro'
4306                                 ));
4307
4308                         }
4309                 }
4310         }
4311 }
4312
4313 function lose_follower($importer,$contact,$datarray,$item) {
4314
4315         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
4316                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4317                         intval(CONTACT_IS_SHARING),
4318                         intval($contact['id'])
4319                 );
4320         }
4321         else {
4322                 contact_remove($contact['id']);
4323         }
4324 }
4325
4326 function lose_sharer($importer,$contact,$datarray,$item) {
4327
4328         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
4329                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4330                         intval(CONTACT_IS_FOLLOWER),
4331                         intval($contact['id'])
4332                 );
4333         }
4334         else {
4335                 contact_remove($contact['id']);
4336         }
4337 }
4338
4339
4340 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
4341
4342         $a = get_app();
4343
4344         if(is_array($importer)) {
4345                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
4346                         intval($importer['uid'])
4347                 );
4348         }
4349
4350         // Diaspora has different message-ids in feeds than they do
4351         // through the direct Diaspora protocol. If we try and use
4352         // the feed, we'll get duplicates. So don't.
4353
4354         if((! count($r)) || $contact['network'] === NETWORK_DIASPORA)
4355                 return;
4356
4357         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
4358
4359         // Use a single verify token, even if multiple hubs
4360
4361         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
4362
4363         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
4364
4365         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
4366
4367         if(!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
4368                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
4369                         dbesc($verify_token),
4370                         intval($contact['id'])
4371                 );
4372         }
4373
4374         post_url($url,$params);
4375
4376         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
4377
4378         return;
4379
4380 }
4381
4382
4383 function atom_author($tag,$name,$uri,$h,$w,$photo) {
4384         $o = '';
4385         if(! $tag)
4386                 return $o;
4387         $name = xmlify($name);
4388         $uri = xmlify($uri);
4389         $h = intval($h);
4390         $w = intval($w);
4391         $photo = xmlify($photo);
4392
4393
4394         $o .= "<$tag>\r\n";
4395         $o .= "\t<name>$name</name>\r\n";
4396         $o .= "\t<uri>$uri</uri>\r\n";
4397         $o .= "\t".'<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4398         $o .= "\t".'<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4399
4400         if ($tag == "author") {
4401                 $r = q("SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
4402                                 `profile`.`name`, `profile`.`pub_keywords`, `profile`.`about`,
4403                                 `profile`.`homepage`,`contact`.`nick` FROM `profile`
4404                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
4405                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
4406                                 WHERE `profile`.`is-default` AND `contact`.`self` AND
4407                                         NOT `user`.`hidewall` AND `contact`.`nurl`='%s'",
4408                         dbesc(normalise_link($uri)));
4409                 if ($r) {
4410                         $location = '';
4411                         if($r[0]['locality'])
4412                                 $location .= $r[0]['locality'];
4413                         if($r[0]['region']) {
4414                                 if($location)
4415                                         $location .= ', ';
4416                                 $location .= $r[0]['region'];
4417                         }
4418                         if($r[0]['country-name']) {
4419                                 if($location)
4420                                         $location .= ', ';
4421                                 $location .= $r[0]['country-name'];
4422                         }
4423
4424                         $o .= "\t<poco:preferredUsername>".xmlify($r[0]["nick"])."</poco:preferredUsername>\r\n";
4425                         $o .= "\t<poco:displayName>".xmlify($r[0]["name"])."</poco:displayName>\r\n";
4426                         $o .= "\t<poco:note>".xmlify($r[0]["about"])."</poco:note>\r\n";
4427                         $o .= "\t<poco:address>\r\n";
4428                         $o .= "\t\t<poco:formatted>".xmlify($location)."</poco:formatted>\r\n";
4429                         $o .= "\t</poco:address>\r\n";
4430                         $o .= "\t<poco:urls>\r\n";
4431                         $o .= "\t<poco:type>homepage</poco:type>\r\n";
4432                         $o .= "\t\t<poco:value>".xmlify($r[0]["homepage"])."</poco:value>\r\n";
4433                         $o .= "\t\t<poco:primary>true</poco:primary>\r\n";
4434                         $o .= "\t</poco:urls>\r\n";
4435                 }
4436         }
4437
4438         call_hooks('atom_author', $o);
4439
4440         $o .= "</$tag>\r\n";
4441         return $o;
4442 }
4443
4444 function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
4445
4446         $a = get_app();
4447
4448         if(! $item['parent'])
4449                 return;
4450
4451         if($item['deleted'])
4452                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
4453
4454
4455         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
4456                 $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid);
4457         else
4458                 $body = $item['body'];
4459
4460
4461         $o = "\r\n\r\n<entry>\r\n";
4462
4463         if(is_array($author))
4464                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
4465         else
4466                 $o .= atom_author('author',(($item['author-name']) ? $item['author-name'] : $item['name']),(($item['author-link']) ? $item['author-link'] : $item['url']),80,80,(($item['author-avatar']) ? $item['author-avatar'] : $item['thumb']));
4467         if(strlen($item['owner-name']))
4468                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
4469
4470         if(($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
4471                 $parent = q("SELECT `guid` FROM `item` WHERE `id` = %d", intval($item["parent"]));
4472                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
4473                 $o .= '<thr:in-reply-to ref="'.xmlify($parent_item).'" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$parent[0]['guid']).'" />'."\r\n";
4474         }
4475
4476         $htmlbody = $body;
4477
4478         if ($item['title'] != "")
4479                 $htmlbody = "[b]".$item['title']."[/b]\n\n".$htmlbody;
4480
4481         $htmlbody = bbcode($htmlbody, false, false, 7);
4482
4483         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
4484         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
4485         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
4486         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
4487         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
4488         $o .= '<content type="' . $type . '" >' . xmlify((($type === 'html') ? $htmlbody : $body)) . '</content>' . "\r\n";
4489         $o .= '<link rel="alternate" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$item['guid']).'" />'."\r\n";
4490
4491         $o .= '<status_net notice_id="'.$item['id'].'"></status_net>'."\r\n";
4492
4493         if($comment)
4494                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
4495
4496         if($item['location']) {
4497                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
4498                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
4499         }
4500
4501         if($item['coord'])
4502                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
4503
4504         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
4505                 $o .= '<dfrn:private>' . (($item['private']) ? $item['private'] : 1) . '</dfrn:private>' . "\r\n";
4506
4507         if($item['extid'])
4508                 $o .= '<dfrn:extid>' . xmlify($item['extid']) . '</dfrn:extid>' . "\r\n";
4509         if($item['bookmark'])
4510                 $o .= '<dfrn:bookmark>true</dfrn:bookmark>' . "\r\n";
4511
4512         if($item['app'])
4513                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
4514
4515         if($item['guid'])
4516                 $o .= '<dfrn:diaspora_guid>' . $item['guid'] . '</dfrn:diaspora_guid>' . "\r\n";
4517
4518         if($item['signed_text']) {
4519                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
4520                 $o .= '<dfrn:diaspora_signature>' . xmlify($sign) . '</dfrn:diaspora_signature>' . "\r\n";
4521         }
4522
4523         $verb = construct_verb($item);
4524         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
4525         $actobj = construct_activity_object($item);
4526         if(strlen($actobj))
4527                 $o .= $actobj;
4528         $actarg = construct_activity_target($item);
4529         if(strlen($actarg))
4530                 $o .= $actarg;
4531
4532         $tags = item_getfeedtags($item);
4533         if(count($tags)) {
4534                 foreach($tags as $t)
4535                         if (($type != 'html') OR ($t[0] != "@"))
4536                                 $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
4537         }
4538
4539         // To-Do:
4540         // To support these elements, the API needs to be enhanced
4541         //$o .= '<link rel="ostatus:conversation" href="'.xmlify($a->get_baseurl().'/display/'.$owner['nickname'].'/'.$item['parent']).'"/>'."\r\n";
4542         //$o .= "\t".'<link rel="self" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4543         //$o .= "\t".'<link rel="edit" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4544
4545         $o .= item_get_attachment($item);
4546
4547         $o .= item_getfeedattach($item);
4548
4549         $mentioned = get_mentions($item);
4550         if($mentioned)
4551                 $o .= $mentioned;
4552
4553         call_hooks('atom_entry', $o);
4554
4555         $o .= '</entry>' . "\r\n";
4556
4557         return $o;
4558 }
4559
4560 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
4561
4562         if(get_config('system','disable_embedded'))
4563                 return $s;
4564
4565         $a = get_app();
4566
4567         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
4568         $site = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://'));
4569
4570         $orig_body = $s;
4571         $new_body = '';
4572
4573         $img_start = strpos($orig_body, '[img');
4574         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4575         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4576         while( ($img_st_close !== false) && ($img_len !== false) ) {
4577
4578                 $img_st_close++; // make it point to AFTER the closing bracket
4579                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
4580
4581                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
4582
4583
4584                 if(stristr($image , $site . '/photo/')) {
4585                         // Only embed locally hosted photos
4586                         $replace = false;
4587                         $i = basename($image);
4588                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
4589                         $x = strpos($i,'-');
4590
4591                         if($x) {
4592                                 $res = substr($i,$x+1);
4593                                 $i = substr($i,0,$x);
4594                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
4595                                         dbesc($i),
4596                                         intval($res),
4597                                         intval($uid)
4598                                 );
4599                                 if($r) {
4600
4601                                         // Check to see if we should replace this photo link with an embedded image
4602                                         // 1. No need to do so if the photo is public
4603                                         // 2. If there's a contact-id provided, see if they're in the access list
4604                                         //    for the photo. If so, embed it.
4605                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
4606                                         //    permissions, regardless of order but first check to see if they're an exact
4607                                         //    match to save some processing overhead.
4608
4609                                         if(has_permissions($r[0])) {
4610                                                 if($cid) {
4611                                                         $recips = enumerate_permissions($r[0]);
4612                                                         if(in_array($cid, $recips)) {
4613                                                                 $replace = true;
4614                                                         }
4615                                                 }
4616                                                 elseif($item) {
4617                                                         if(compare_permissions($item,$r[0]))
4618                                                                 $replace = true;
4619                                                 }
4620                                         }
4621                                         if($replace) {
4622                                                 $data = $r[0]['data'];
4623                                                 $type = $r[0]['type'];
4624
4625                                                 // If a custom width and height were specified, apply before embedding
4626                                                 if(preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
4627                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
4628
4629                                                         $width = intval($match[1]);
4630                                                         $height = intval($match[2]);
4631
4632                                                         $ph = new Photo($data, $type);
4633                                                         if($ph->is_valid()) {
4634                                                                 $ph->scaleImage(max($width, $height));
4635                                                                 $data = $ph->imageString();
4636                                                                 $type = $ph->getType();
4637                                                         }
4638                                                 }
4639
4640                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
4641                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
4642                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
4643                                         }
4644                                 }
4645                         }
4646                 }
4647
4648                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
4649                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
4650                 if($orig_body === false)
4651                         $orig_body = '';
4652
4653                 $img_start = strpos($orig_body, '[img');
4654                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4655                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4656         }
4657
4658         $new_body = $new_body . $orig_body;
4659
4660         return($new_body);
4661 }
4662
4663
4664 function has_permissions($obj) {
4665         if(($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
4666                 return true;
4667         return false;
4668 }
4669
4670 function compare_permissions($obj1,$obj2) {
4671         // first part is easy. Check that these are exactly the same.
4672         if(($obj1['allow_cid'] == $obj2['allow_cid'])
4673                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
4674                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
4675                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
4676                 return true;
4677
4678         // This is harder. Parse all the permissions and compare the resulting set.
4679
4680         $recipients1 = enumerate_permissions($obj1);
4681         $recipients2 = enumerate_permissions($obj2);
4682         sort($recipients1);
4683         sort($recipients2);
4684         if($recipients1 == $recipients2)
4685                 return true;
4686         return false;
4687 }
4688
4689 // returns an array of contact-ids that are allowed to see this object
4690
4691 function enumerate_permissions($obj) {
4692         require_once('include/group.php');
4693         $allow_people = expand_acl($obj['allow_cid']);
4694         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
4695         $deny_people  = expand_acl($obj['deny_cid']);
4696         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
4697         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
4698         $deny         = array_unique(array_merge($deny_people,$deny_groups));
4699         $recipients   = array_diff($recipients,$deny);
4700         return $recipients;
4701 }
4702
4703 function item_getfeedtags($item) {
4704         $ret = array();
4705         $matches = false;
4706         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4707         if($cnt) {
4708                 for($x = 0; $x < $cnt; $x ++) {
4709                         if($matches[1][$x])
4710                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
4711                 }
4712         }
4713         $matches = false;
4714         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4715         if($cnt) {
4716                 for($x = 0; $x < $cnt; $x ++) {
4717                         if($matches[1][$x])
4718                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
4719                 }
4720         }
4721         return $ret;
4722 }
4723
4724 function item_get_attachment($item) {
4725         $o = "";
4726         $siteinfo = get_attached_data($item["body"]);
4727
4728         switch($siteinfo["type"]) {
4729                 case 'link':
4730                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4731                         break;
4732                 case 'photo':
4733                         $imgdata = get_photo_info($siteinfo["image"]);
4734                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["image"]).'" type="'.$imgdata["mime"].'" length="'.$imgdata["size"].'"/>'."\r\n";
4735                         break;
4736                 case 'video':
4737                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4738                         break;
4739                 default:
4740                         break;
4741         }
4742
4743         return $o;
4744 }
4745
4746 function item_getfeedattach($item) {
4747         $ret = '';
4748         $arr = explode('[/attach],',$item['attach']);
4749         if(count($arr)) {
4750                 foreach($arr as $r) {
4751                         $matches = false;
4752                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches);
4753                         if($cnt) {
4754                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
4755                                 if(intval($matches[2]))
4756                                         $ret .= 'length="' . intval($matches[2]) . '" ';
4757                                 if($matches[4] !== ' ')
4758                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
4759                                 $ret .= ' />' . "\r\n";
4760                         }
4761                 }
4762         }
4763         return $ret;
4764 }
4765
4766
4767
4768 function item_expire($uid, $days, $network = "", $force = false) {
4769
4770         if((! $uid) || ($days < 1))
4771                 return;
4772
4773         // $expire_network_only = save your own wall posts
4774         // and just expire conversations started by others
4775
4776         $expire_network_only = get_pconfig($uid,'expire','network_only');
4777         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
4778
4779         if ($network != "") {
4780                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
4781                 // There is an index "uid_network_received" but not "uid_network_created"
4782                 // This avoids the creation of another index just for one purpose.
4783                 // And it doesn't really matter wether to look at "received" or "created"
4784                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4785         } else
4786                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4787
4788         $r = q("SELECT * FROM `item`
4789                 WHERE `uid` = %d $range
4790                 AND `id` = `parent`
4791                 $sql_extra
4792                 AND `deleted` = 0",
4793                 intval($uid),
4794                 intval($days)
4795         );
4796
4797         if(! count($r))
4798                 return;
4799
4800         $expire_items = get_pconfig($uid, 'expire','items');
4801         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
4802
4803         // Forcing expiring of items - but not notes and marked items
4804         if ($force)
4805                 $expire_items = true;
4806
4807         $expire_notes = get_pconfig($uid, 'expire','notes');
4808         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
4809
4810         $expire_starred = get_pconfig($uid, 'expire','starred');
4811         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
4812
4813         $expire_photos = get_pconfig($uid, 'expire','photos');
4814         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
4815
4816         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
4817
4818         foreach($r as $item) {
4819
4820                 // don't expire filed items
4821
4822                 if(strpos($item['file'],'[') !== false)
4823                         continue;
4824
4825                 // Only expire posts, not photos and photo comments
4826
4827                 if($expire_photos==0 && strlen($item['resource-id']))
4828                         continue;
4829                 if($expire_starred==0 && intval($item['starred']))
4830                         continue;
4831                 if($expire_notes==0 && $item['type']=='note')
4832                         continue;
4833                 if($expire_items==0 && $item['type']!='note')
4834                         continue;
4835
4836                 drop_item($item['id'],false);
4837         }
4838
4839         proc_run('php',"include/notifier.php","expire","$uid");
4840
4841 }
4842
4843
4844 function drop_items($items) {
4845         $uid = 0;
4846
4847         if(! local_user() && ! remote_user())
4848                 return;
4849
4850         if(count($items)) {
4851                 foreach($items as $item) {
4852                         $owner = drop_item($item,false);
4853                         if($owner && ! $uid)
4854                                 $uid = $owner;
4855                 }
4856         }
4857
4858         // multiple threads may have been deleted, send an expire notification
4859
4860         if($uid)
4861                 proc_run('php',"include/notifier.php","expire","$uid");
4862 }
4863
4864
4865 function drop_item($id,$interactive = true) {
4866
4867         $a = get_app();
4868
4869         // locate item to be deleted
4870
4871         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
4872                 intval($id)
4873         );
4874
4875         if(! count($r)) {
4876                 if(! $interactive)
4877                         return 0;
4878                 notice( t('Item not found.') . EOL);
4879                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4880         }
4881
4882         $item = $r[0];
4883
4884         $owner = $item['uid'];
4885
4886         $cid = 0;
4887
4888         // check if logged in user is either the author or owner of this item
4889
4890         if(is_array($_SESSION['remote'])) {
4891                 foreach($_SESSION['remote'] as $visitor) {
4892                         if($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
4893                                 $cid = $visitor['cid'];
4894                                 break;
4895                         }
4896                 }
4897         }
4898
4899
4900         if((local_user() == $item['uid']) || ($cid) || (! $interactive)) {
4901
4902                 // Check if we should do HTML-based delete confirmation
4903                 if($_REQUEST['confirm']) {
4904                         // <form> can't take arguments in its "action" parameter
4905                         // so add any arguments as hidden inputs
4906                         $query = explode_querystring($a->query_string);
4907                         $inputs = array();
4908                         foreach($query['args'] as $arg) {
4909                                 if(strpos($arg, 'confirm=') === false) {
4910                                         $arg_parts = explode('=', $arg);
4911                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
4912                                 }
4913                         }
4914
4915                         return replace_macros(get_markup_template('confirm.tpl'), array(
4916                                 '$method' => 'get',
4917                                 '$message' => t('Do you really want to delete this item?'),
4918                                 '$extra_inputs' => $inputs,
4919                                 '$confirm' => t('Yes'),
4920                                 '$confirm_url' => $query['base'],
4921                                 '$confirm_name' => 'confirmed',
4922                                 '$cancel' => t('Cancel'),
4923                         ));
4924                 }
4925                 // Now check how the user responded to the confirmation query
4926                 if($_REQUEST['canceled']) {
4927                         goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4928                 }
4929
4930                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
4931                 // delete the item
4932
4933                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
4934                         dbesc(datetime_convert()),
4935                         dbesc(datetime_convert()),
4936                         intval($item['id'])
4937                 );
4938                 create_tags_from_item($item['id']);
4939                 create_files_from_item($item['id']);
4940                 delete_thread($item['id'], $item['parent-uri']);
4941
4942                 // clean up categories and tags so they don't end up as orphans
4943
4944                 $matches = false;
4945                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
4946                 if($cnt) {
4947                         foreach($matches as $mtch) {
4948                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
4949                         }
4950                 }
4951
4952                 $matches = false;
4953
4954                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
4955                 if($cnt) {
4956                         foreach($matches as $mtch) {
4957                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
4958                         }
4959                 }
4960
4961                 // If item is a link to a photo resource, nuke all the associated photos
4962                 // (visitors will not have photo resources)
4963                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
4964                 // generate a resource-id and therefore aren't intimately linked to the item.
4965
4966                 if(strlen($item['resource-id'])) {
4967                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
4968                                 dbesc($item['resource-id']),
4969                                 intval($item['uid'])
4970                         );
4971                         // ignore the result
4972                 }
4973
4974                 // If item is a link to an event, nuke the event record.
4975
4976                 if(intval($item['event-id'])) {
4977                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
4978                                 intval($item['event-id']),
4979                                 intval($item['uid'])
4980                         );
4981                         // ignore the result
4982                 }
4983
4984                 // If item has attachments, drop them
4985
4986                 foreach(explode(",",$item['attach']) as $attach){
4987                         preg_match("|attach/(\d+)|", $attach, $matches);
4988                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
4989                                 intval($matches[1]),
4990                                 local_user()
4991                         );
4992                         // ignore the result
4993                 }
4994
4995
4996                 // clean up item_id and sign meta-data tables
4997
4998                 /*
4999                 // Old code - caused very long queries and warning entries in the mysql logfiles:
5000
5001                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
5002                         intval($item['id']),
5003                         intval($item['uid'])
5004                 );
5005
5006                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
5007                         intval($item['id']),
5008                         intval($item['uid'])
5009                 );
5010                 */
5011
5012                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
5013
5014                 // Creating list of parents
5015                 $r = q("select id from item where parent = %d and uid = %d",
5016                         intval($item['id']),
5017                         intval($item['uid'])
5018                 );
5019
5020                 $parentid = "";
5021
5022                 foreach ($r AS $row) {
5023                         if ($parentid != "")
5024                                 $parentid .= ", ";
5025
5026                         $parentid .= $row["id"];
5027                 }
5028
5029                 // Now delete them
5030                 if ($parentid != "") {
5031                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
5032
5033                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
5034                 }
5035
5036                 // If it's the parent of a comment thread, kill all the kids
5037
5038                 if($item['uri'] == $item['parent-uri']) {
5039                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
5040                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
5041                                 dbesc(datetime_convert()),
5042                                 dbesc(datetime_convert()),
5043                                 dbesc($item['parent-uri']),
5044                                 intval($item['uid'])
5045                         );
5046                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
5047                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
5048                         delete_thread_uri($item['parent-uri'], $item['uid']);
5049                         // ignore the result
5050                 }
5051                 else {
5052                         // ensure that last-child is set in case the comment that had it just got wiped.
5053                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
5054                                 dbesc(datetime_convert()),
5055                                 dbesc($item['parent-uri']),
5056                                 intval($item['uid'])
5057                         );
5058                         // who is the last child now?
5059                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
5060                                 dbesc($item['parent-uri']),
5061                                 intval($item['uid'])
5062                         );
5063                         if(count($r)) {
5064                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
5065                                         intval($r[0]['id'])
5066                                 );
5067                         }
5068
5069                         // Add a relayable_retraction signature for Diaspora.
5070                         store_diaspora_retract_sig($item, $a->user, $a->get_baseurl());
5071                 }
5072
5073                 $drop_id = intval($item['id']);
5074
5075                 // send the notification upstream/downstream as the case may be
5076
5077                 proc_run('php',"include/notifier.php","drop","$drop_id");
5078
5079                 if(! $interactive)
5080                         return $owner;
5081                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5082                 //NOTREACHED
5083         }
5084         else {
5085                 if(! $interactive)
5086                         return 0;
5087                 notice( t('Permission denied.') . EOL);
5088                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5089                 //NOTREACHED
5090         }
5091
5092 }
5093
5094
5095 function first_post_date($uid,$wall = false) {
5096         $r = q("select id, created from item
5097                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
5098                 and id = parent
5099                 order by created asc limit 1",
5100                 intval($uid),
5101                 intval($wall ? 1 : 0)
5102         );
5103         if(count($r)) {
5104 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
5105                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
5106         }
5107         return false;
5108 }
5109
5110 /* modified posted_dates() {below} to arrange the list in years */
5111 function list_post_dates($uid, $wall) {
5112         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5113
5114         $dthen = first_post_date($uid, $wall);
5115         if(! $dthen)
5116                 return array();
5117
5118         // Set the start and end date to the beginning of the month
5119         $dnow = substr($dnow,0,8).'01';
5120         $dthen = substr($dthen,0,8).'01';
5121
5122         $ret = array();
5123
5124         // Starting with the current month, get the first and last days of every
5125         // month down to and including the month of the first post
5126         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5127                 $dyear = intval(substr($dnow,0,4));
5128                 $dstart = substr($dnow,0,8) . '01';
5129                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5130                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5131                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5132                 $str = day_translate(datetime_convert('','',$dnow,'F'));
5133                 if(! $ret[$dyear])
5134                         $ret[$dyear] = array();
5135                 $ret[$dyear][] = array($str,$end_month,$start_month);
5136                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5137         }
5138         return $ret;
5139 }
5140
5141 function posted_dates($uid,$wall) {
5142         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5143
5144         $dthen = first_post_date($uid,$wall);
5145         if(! $dthen)
5146                 return array();
5147
5148         // Set the start and end date to the beginning of the month
5149         $dnow = substr($dnow,0,8).'01';
5150         $dthen = substr($dthen,0,8).'01';
5151
5152         $ret = array();
5153         // Starting with the current month, get the first and last days of every
5154         // month down to and including the month of the first post
5155         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5156                 $dstart = substr($dnow,0,8) . '01';
5157                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5158                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5159                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5160                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
5161                 $ret[] = array($str,$end_month,$start_month);
5162                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5163         }
5164         return $ret;
5165 }
5166
5167
5168 function posted_date_widget($url,$uid,$wall) {
5169         $o = '';
5170
5171         if(! feature_enabled($uid,'archives'))
5172                 return $o;
5173
5174         // For former Facebook folks that left because of "timeline"
5175
5176 /*      if($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
5177                 return $o;*/
5178
5179         $visible_years = get_pconfig($uid,'system','archive_visible_years');
5180         if(! $visible_years)
5181                 $visible_years = 5;
5182
5183         $ret = list_post_dates($uid,$wall);
5184
5185         if(! count($ret))
5186                 return $o;
5187
5188         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
5189         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
5190
5191         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
5192                 '$title' => t('Archives'),
5193                 '$size' => $visible_years,
5194                 '$cutoff_year' => $cutoff_year,
5195                 '$cutoff' => $cutoff,
5196                 '$url' => $url,
5197                 '$dates' => $ret,
5198                 '$showmore' => t('show more')
5199
5200         ));
5201         return $o;
5202 }
5203
5204 function store_diaspora_retract_sig($item, $user, $baseurl) {
5205         // Note that we can't add a target_author_signature
5206         // if the comment was deleted by a remote user. That should be ok, because if a remote user is deleting
5207         // the comment, that means we're the home of the post, and Diaspora will only
5208         // check the parent_author_signature of retractions that it doesn't have to relay further
5209         //
5210         // I don't think this function gets called for an "unlike," but I'll check anyway
5211
5212         $enabled = intval(get_config('system','diaspora_enabled'));
5213         if(! $enabled) {
5214                 logger('drop_item: diaspora support disabled, not storing retraction signature', LOGGER_DEBUG);
5215                 return;
5216         }
5217
5218         logger('drop_item: storing diaspora retraction signature');
5219
5220         $signed_text = $item['guid'] . ';' . ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
5221
5222         if(local_user() == $item['uid']) {
5223
5224                 $handle = $user['nickname'] . '@' . substr($baseurl, strpos($baseurl,'://') + 3);
5225                 $authorsig = base64_encode(rsa_sign($signed_text,$user['prvkey'],'sha256'));
5226         }
5227         else {
5228                 $r = q("SELECT `nick`, `url` FROM `contact` WHERE `id` = '%d' LIMIT 1",
5229                         $item['contact-id'] // If this function gets called, drop_item() has already checked remote_user() == $item['contact-id']
5230                 );
5231                 if(count($r)) {
5232                         // The below handle only works for NETWORK_DFRN. I think that's ok, because this function
5233                         // only handles DFRN deletes
5234                         $handle_baseurl_start = strpos($r['url'],'://') + 3;
5235                         $handle_baseurl_length = strpos($r['url'],'/profile') - $handle_baseurl_start;
5236                         $handle = $r['nick'] . '@' . substr($r['url'], $handle_baseurl_start, $handle_baseurl_length);
5237                         $authorsig = '';
5238                 }
5239         }
5240
5241         if(isset($handle))
5242                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
5243                         intval($item['id']),
5244                         dbesc($signed_text),
5245                         dbesc($authorsig),
5246                         dbesc($handle)
5247                 );
5248
5249         return;
5250 }