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'))   ? notags(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'))    ? notags(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'))         ? notags(trim($arr['title']))         : '');
1254         $arr['location']      = ((x($arr,'location'))      ? notags(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'] = $contact['id'];
2768                                 if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
2769                                         $datarray['type'] = 'activity';
2770                                         $datarray['gravity'] = GRAVITY_LIKE;
2771                                         // only one like or dislike per person
2772                                         // splitted into two queries for performance issues
2773                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
2774                                                 intval($datarray['uid']),
2775                                                 intval($datarray['contact-id']),
2776                                                 dbesc($datarray['verb']),
2777                                                 dbesc($parent_uri)
2778                                         );
2779                                         if($r && count($r))
2780                                                 continue;
2781
2782                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
2783                                                 intval($datarray['uid']),
2784                                                 intval($datarray['contact-id']),
2785                                                 dbesc($datarray['verb']),
2786                                                 dbesc($parent_uri)
2787                                         );
2788                                         if($r && count($r))
2789                                                 continue;
2790                                 }
2791
2792                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2793                                         $xo = parse_xml_string($datarray['object'],false);
2794                                         $xt = parse_xml_string($datarray['target'],false);
2795
2796                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
2797                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
2798                                                         dbesc($xt->id),
2799                                                         intval($importer['importer_uid'])
2800                                                 );
2801                                                 if(! count($r))
2802                                                         continue;
2803
2804                                                 // extract tag, if not duplicate, add to parent item
2805                                                 if($xo->id && $xo->content) {
2806                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
2807                                                         if(! (stristr($r[0]['tag'],$newtag))) {
2808                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
2809                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . $newtag),
2810                                                                         intval($r[0]['id'])
2811                                                                 );
2812                                                                 create_tags_from_item($r[0]['id']);
2813                                                         }
2814                                                 }
2815                                         }
2816                                 }
2817
2818                                 $r = item_store($datarray,$force_parent);
2819                                 continue;
2820                         }
2821
2822                         else {
2823
2824                                 // Head post of a conversation. Have we seen it? If not, import it.
2825
2826                                 $item_id  = $item->get_id();
2827
2828                                 $datarray = get_atom_elements($feed, $item, $contact);
2829
2830                                 if(is_array($contact)) {
2831                                         if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2832                                                 $datarray['author-name'] = $contact['name'];
2833                                         if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2834                                                 $datarray['author-link'] = $contact['url'];
2835                                         if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2836                                                 $datarray['author-avatar'] = $contact['thumb'];
2837                                 }
2838
2839                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2840                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2841                                         continue;
2842                                 }
2843
2844                                 // special handling for events
2845
2846                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
2847                                         $ev = bbtoevent($datarray['body']);
2848                                         if(x($ev,'desc') && x($ev,'start')) {
2849                                                 $ev['uid'] = $importer['uid'];
2850                                                 $ev['uri'] = $item_id;
2851                                                 $ev['edited'] = $datarray['edited'];
2852                                                 $ev['private'] = $datarray['private'];
2853
2854                                                 if(is_array($contact))
2855                                                         $ev['cid'] = $contact['id'];
2856                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2857                                                         dbesc($item_id),
2858                                                         intval($importer['uid'])
2859                                                 );
2860                                                 if(count($r))
2861                                                         $ev['id'] = $r[0]['id'];
2862                                                 $xyz = event_store($ev);
2863                                                 continue;
2864                                         }
2865                                 }
2866
2867                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2868                                         if(strlen($datarray['title']))
2869                                                 unset($datarray['title']);
2870                                         $datarray['last-child'] = 1;
2871                                 }
2872
2873
2874                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2875                                         dbesc($item_id),
2876                                         intval($importer['uid'])
2877                                 );
2878
2879                                 // Update content if 'updated' changes
2880
2881                                 if(count($r)) {
2882                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2883
2884                                                 // do not accept (ignore) an earlier edit than one we currently have.
2885                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2886                                                         continue;
2887
2888                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2889                                                         dbesc($datarray['title']),
2890                                                         dbesc($datarray['body']),
2891                                                         dbesc($datarray['tag']),
2892                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2893                                                         dbesc(datetime_convert()),
2894                                                         dbesc($item_id),
2895                                                         intval($importer['uid'])
2896                                                 );
2897                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2898                                                 update_thread_uri($item_id, $importer['uid']);
2899                                         }
2900
2901                                         // update last-child if it changes
2902
2903                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2904                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
2905                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2906                                                         intval($allow[0]['data']),
2907                                                         dbesc(datetime_convert()),
2908                                                         dbesc($item_id),
2909                                                         intval($importer['uid'])
2910                                                 );
2911                                                 update_thread_uri($item_id, $importer['uid']);
2912                                         }
2913                                         continue;
2914                                 }
2915
2916                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
2917                                         logger('consume-feed: New follower');
2918                                         new_follower($importer,$contact,$datarray,$item);
2919                                         return;
2920                                 }
2921                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
2922                                         lose_follower($importer,$contact,$datarray,$item);
2923                                         return;
2924                                 }
2925
2926                                 if(activity_match($datarray['verb'],ACTIVITY_REQ_FRIEND)) {
2927                                         logger('consume-feed: New friend request');
2928                                         new_follower($importer,$contact,$datarray,$item,true);
2929                                         return;
2930                                 }
2931                                 if(activity_match($datarray['verb'],ACTIVITY_UNFRIEND))  {
2932                                         lose_sharer($importer,$contact,$datarray,$item);
2933                                         return;
2934                                 }
2935
2936
2937                                 if(! is_array($contact))
2938                                         return;
2939
2940
2941                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2942                                                 // one way feed - no remote comment ability
2943                                                 $datarray['last-child'] = 0;
2944                                 }
2945                                 if($contact['network'] === NETWORK_FEED)
2946                                         $datarray['private'] = 2;
2947
2948                                 $datarray['parent-uri'] = $item_id;
2949                                 $datarray['uid'] = $importer['uid'];
2950                                 $datarray['contact-id'] = $contact['id'];
2951
2952                                 if(! link_compare($datarray['owner-link'],$contact['url'])) {
2953                                         // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
2954                                         // but otherwise there's a possible data mixup on the sender's system.
2955                                         // the tgroup delivery code called from item_store will correct it if it's a forum,
2956                                         // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
2957                                         logger('consume_feed: Correcting item owner.', LOGGER_DEBUG);
2958                                         $datarray['owner-name']   = $contact['name'];
2959                                         $datarray['owner-link']   = $contact['url'];
2960                                         $datarray['owner-avatar'] = $contact['thumb'];
2961                                 }
2962
2963                                 // We've allowed "followers" to reach this point so we can decide if they are
2964                                 // posting an @-tag delivery, which followers are allowed to do for certain
2965                                 // page types. Now that we've parsed the post, let's check if it is legit. Otherwise ignore it.
2966
2967                                 if(($contact['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['uid'],$datarray)))
2968                                         continue;
2969
2970                                 // This is my contact on another system, but it's really me.
2971                                 // Turn this into a wall post.
2972                                 $notify = item_is_remote_self($contact, $datarray);
2973
2974                                 $r = item_store($datarray, false, $notify);
2975                                 logger('Stored - Contact '.$contact['url'].' Notify '.$notify.' return '.$r.' Item '.print_r($datarray, true), LOGGER_DEBUG);
2976                                 continue;
2977
2978                         }
2979                 }
2980         }
2981 }
2982
2983 function item_is_remote_self($contact, &$datarray) {
2984         $a = get_app();
2985
2986         if (!$contact['remote_self'])
2987                 return false;
2988
2989         // Prevent the forwarding of posts that are forwarded
2990         if ($datarray["extid"] == NETWORK_DFRN)
2991                 return false;
2992
2993         // Prevent to forward already forwarded posts
2994         if ($datarray["app"] == $a->get_hostname())
2995                 return false;
2996
2997         // Only forward posts
2998         if ($datarray["verb"] != ACTIVITY_POST)
2999                 return false;
3000
3001         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
3002                 return false;
3003
3004         $datarray2 = $datarray;
3005         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
3006         if ($contact['remote_self'] == 2) {
3007                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
3008                         intval($contact['uid']));
3009                 if (count($r)) {
3010                         $datarray['contact-id'] = $r[0]["id"];
3011
3012                         $datarray['owner-name'] = $r[0]["name"];
3013                         $datarray['owner-link'] = $r[0]["url"];
3014                         $datarray['owner-avatar'] = $r[0]["thumb"];
3015
3016                         $datarray['author-name']   = $datarray['owner-name'];
3017                         $datarray['author-link']   = $datarray['owner-link'];
3018                         $datarray['author-avatar'] = $datarray['owner-avatar'];
3019                 }
3020
3021                 if ($contact['network'] != NETWORK_FEED) {
3022                         $datarray["guid"] = get_guid(32);
3023                         unset($datarray["plink"]);
3024                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
3025                         $datarray["parent-uri"] = $datarray["uri"];
3026                         $datarray["extid"] = $contact['network'];
3027                         $urlpart = parse_url($datarray2['author-link']);
3028                         $datarray["app"] = $urlpart["host"];
3029                 } else
3030                         $datarray['private'] = 0;
3031         }
3032
3033         if ($contact['network'] != NETWORK_FEED) {
3034                 // Store the original post
3035                 $r = item_store($datarray2, false, false);
3036                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
3037         } else
3038                 $datarray["app"] = "Feed";
3039
3040         return true;
3041 }
3042
3043 function local_delivery($importer,$data) {
3044         $a = get_app();
3045
3046         logger(__function__, LOGGER_TRACE);
3047
3048         if($importer['readonly']) {
3049                 // We aren't receiving stuff from this person. But we will quietly ignore them
3050                 // rather than a blatant "go away" message.
3051                 logger('local_delivery: ignoring');
3052                 return 0;
3053                 //NOTREACHED
3054         }
3055
3056         // Consume notification feed. This may differ from consuming a public feed in several ways
3057         // - might contain email or friend suggestions
3058         // - might contain remote followup to our message
3059         //              - in which case we need to accept it and then notify other conversants
3060         // - we may need to send various email notifications
3061
3062         $feed = new SimplePie();
3063         $feed->set_raw_data($data);
3064         $feed->enable_order_by_date(false);
3065         $feed->init();
3066
3067
3068         if($feed->error())
3069                 logger('local_delivery: Error parsing XML: ' . $feed->error());
3070
3071
3072         // Check at the feed level for updated contact name and/or photo
3073
3074         $name_updated  = '';
3075         $new_name = '';
3076         $photo_timestamp = '';
3077         $photo_url = '';
3078         $contact_updated = '';
3079
3080
3081         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
3082
3083 // Fallback should not be needed here. If it isn't DFRN it won't have DFRN updated tags
3084 //      if(! $rawtags)
3085 //              $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
3086
3087         if($rawtags) {
3088                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
3089                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
3090                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
3091                         $new_name = $elems['name'][0]['data'];
3092
3093                         // Manually checking for changed contact names
3094                         if (($new_name != $importer['name']) AND ($new_name != "") AND ($name_updated <= $importer['name-date'])) {
3095                                 $name_updated = date("c");
3096                                 $photo_timestamp = date("c");
3097                         }
3098                 }
3099                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
3100                         if ($photo_timestamp == "")
3101                                 $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
3102                         $photo_url = $elems['link'][0]['attribs']['']['href'];
3103                 }
3104         }
3105
3106         if(($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $importer['avatar-date'])) {
3107
3108                 $contact_updated = $photo_timestamp;
3109
3110                 logger('local_delivery: Updating photo for ' . $importer['name']);
3111                 require_once("include/Photo.php");
3112                 $photo_failure = false;
3113                 $have_photo = false;
3114
3115                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
3116                         intval($importer['id']),
3117                         intval($importer['importer_uid'])
3118                 );
3119                 if(count($r)) {
3120                         $resource_id = $r[0]['resource-id'];
3121                         $have_photo = true;
3122                 }
3123                 else {
3124                         $resource_id = photo_new_resource();
3125                 }
3126
3127                 $img_str = fetch_url($photo_url,true);
3128                 // guess mimetype from headers or filename
3129                 $type = guess_image_type($photo_url,true);
3130
3131
3132                 $img = new Photo($img_str, $type);
3133                 if($img->is_valid()) {
3134                         if($have_photo) {
3135                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
3136                                         dbesc($resource_id),
3137                                         intval($importer['id']),
3138                                         intval($importer['importer_uid'])
3139                                 );
3140                         }
3141
3142                         $img->scaleImageSquare(175);
3143
3144                         $hash = $resource_id;
3145                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 4);
3146
3147                         $img->scaleImage(80);
3148                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 5);
3149
3150                         $img->scaleImage(48);
3151                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 6);
3152
3153                         $a = get_app();
3154
3155                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
3156                                 WHERE `uid` = %d AND `id` = %d",
3157                                 dbesc(datetime_convert()),
3158                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.'.$img->getExt()),
3159                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.'.$img->getExt()),
3160                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.'.$img->getExt()),
3161                                 intval($importer['importer_uid']),
3162                                 intval($importer['id'])
3163                         );
3164                 }
3165         }
3166
3167         if(($name_updated) && (strlen($new_name)) && ($name_updated > $importer['name-date'])) {
3168                 if ($name_updated > $contact_updated)
3169                         $contact_updated = $name_updated;
3170
3171                 $r = q("select * from contact where uid = %d and id = %d limit 1",
3172                         intval($importer['importer_uid']),
3173                         intval($importer['id'])
3174                 );
3175
3176                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d",
3177                         dbesc(notags(trim($new_name))),
3178                         dbesc(datetime_convert()),
3179                         intval($importer['importer_uid']),
3180                         intval($importer['id'])
3181                 );
3182
3183                 // do our best to update the name on content items
3184
3185                 if(count($r)) {
3186                         q("update item set `author-name` = '%s' where `author-name` = '%s' and `author-link` = '%s' and uid = %d",
3187                                 dbesc(notags(trim($new_name))),
3188                                 dbesc($r[0]['name']),
3189                                 dbesc($r[0]['url']),
3190                                 intval($importer['importer_uid'])
3191                         );
3192                 }
3193         }
3194
3195         if ($contact_updated AND $new_name AND $photo_url)
3196                 poco_check($importer['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $importer['id'], $importer['importer_uid']);
3197
3198         // Currently unsupported - needs a lot of work
3199         $reloc = $feed->get_feed_tags( NAMESPACE_DFRN, 'relocate' );
3200         if(isset($reloc[0]['child'][NAMESPACE_DFRN])) {
3201                 $base = $reloc[0]['child'][NAMESPACE_DFRN];
3202                 $newloc = array();
3203                 $newloc['uid'] = $importer['importer_uid'];
3204                 $newloc['cid'] = $importer['id'];
3205                 $newloc['name'] = notags(unxmlify($base['name'][0]['data']));
3206                 $newloc['photo'] = notags(unxmlify($base['photo'][0]['data']));
3207                 $newloc['thumb'] = notags(unxmlify($base['thumb'][0]['data']));
3208                 $newloc['micro'] = notags(unxmlify($base['micro'][0]['data']));
3209                 $newloc['url'] = notags(unxmlify($base['url'][0]['data']));
3210                 $newloc['request'] = notags(unxmlify($base['request'][0]['data']));
3211                 $newloc['confirm'] = notags(unxmlify($base['confirm'][0]['data']));
3212                 $newloc['notify'] = notags(unxmlify($base['notify'][0]['data']));
3213                 $newloc['poll'] = notags(unxmlify($base['poll'][0]['data']));
3214                 $newloc['sitepubkey'] = notags(unxmlify($base['sitepubkey'][0]['data']));
3215                 /** relocated user must have original key pair */
3216                 /*$newloc['pubkey'] = notags(unxmlify($base['pubkey'][0]['data']));
3217                 $newloc['prvkey'] = notags(unxmlify($base['prvkey'][0]['data']));*/
3218
3219                 logger("items:relocate contact ".print_r($newloc, true).print_r($importer, true), LOGGER_DEBUG);
3220
3221                 // update contact
3222                 $r = q("SELECT photo, url FROM contact WHERE id=%d AND uid=%d;",
3223                         intval($importer['id']),
3224                         intval($importer['importer_uid']));
3225                 if ($r === false)
3226                         return 1;
3227                 $old = $r[0];
3228
3229                 $x = q("UPDATE contact SET
3230                                         name = '%s',
3231                                         photo = '%s',
3232                                         thumb = '%s',
3233                                         micro = '%s',
3234                                         url = '%s',
3235                                         nurl = '%s',
3236                                         request = '%s',
3237                                         confirm = '%s',
3238                                         notify = '%s',
3239                                         poll = '%s',
3240                                         `site-pubkey` = '%s'
3241                         WHERE id=%d AND uid=%d;",
3242                                         dbesc($newloc['name']),
3243                                         dbesc($newloc['photo']),
3244                                         dbesc($newloc['thumb']),
3245                                         dbesc($newloc['micro']),
3246                                         dbesc($newloc['url']),
3247                                         dbesc(normalise_link($newloc['url'])),
3248                                         dbesc($newloc['request']),
3249                                         dbesc($newloc['confirm']),
3250                                         dbesc($newloc['notify']),
3251                                         dbesc($newloc['poll']),
3252                                         dbesc($newloc['sitepubkey']),
3253                                         intval($importer['id']),
3254                                         intval($importer['importer_uid']));
3255
3256                 if ($x === false)
3257                         return 1;
3258                 // update items
3259                 $fields = array(
3260                         'owner-link' => array($old['url'], $newloc['url']),
3261                         'author-link' => array($old['url'], $newloc['url']),
3262                         'owner-avatar' => array($old['photo'], $newloc['photo']),
3263                         'author-avatar' => array($old['photo'], $newloc['photo']),
3264                         );
3265                 foreach ($fields as $n=>$f){
3266                         $x = q("UPDATE `item` SET `%s`='%s' WHERE `%s`='%s' AND uid=%d",
3267                                         $n, dbesc($f[1]),
3268                                         $n, dbesc($f[0]),
3269                                         intval($importer['importer_uid']));
3270                                 if ($x === false)
3271                                         return 1;
3272                         }
3273
3274                 // TODO
3275                 // merge with current record, current contents have priority
3276                 // update record, set url-updated
3277                 // update profile photos
3278                 // schedule a scan?
3279                 return 0;
3280         }
3281
3282
3283         // handle friend suggestion notification
3284
3285         $sugg = $feed->get_feed_tags( NAMESPACE_DFRN, 'suggest' );
3286         if(isset($sugg[0]['child'][NAMESPACE_DFRN])) {
3287                 $base = $sugg[0]['child'][NAMESPACE_DFRN];
3288                 $fsugg = array();
3289                 $fsugg['uid'] = $importer['importer_uid'];
3290                 $fsugg['cid'] = $importer['id'];
3291                 $fsugg['name'] = notags(unxmlify($base['name'][0]['data']));
3292                 $fsugg['photo'] = notags(unxmlify($base['photo'][0]['data']));
3293                 $fsugg['url'] = notags(unxmlify($base['url'][0]['data']));
3294                 $fsugg['request'] = notags(unxmlify($base['request'][0]['data']));
3295                 $fsugg['body'] = escape_tags(unxmlify($base['note'][0]['data']));
3296
3297                 // Does our member already have a friend matching this description?
3298
3299                 $r = q("SELECT * FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
3300                         dbesc($fsugg['name']),
3301                         dbesc(normalise_link($fsugg['url'])),
3302                         intval($fsugg['uid'])
3303                 );
3304                 if(count($r))
3305                         return 0;
3306
3307                 // Do we already have an fcontact record for this person?
3308
3309                 $fid = 0;
3310                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3311                         dbesc($fsugg['url']),
3312                         dbesc($fsugg['name']),
3313                         dbesc($fsugg['request'])
3314                 );
3315                 if(count($r)) {
3316                         $fid = $r[0]['id'];
3317
3318                         // OK, we do. Do we already have an introduction for this person ?
3319                         $r = q("select id from intro where uid = %d and fid = %d limit 1",
3320                                 intval($fsugg['uid']),
3321                                 intval($fid)
3322                         );
3323                         if(count($r))
3324                                 return 0;
3325                 }
3326                 if(! $fid)
3327                         $r = q("INSERT INTO `fcontact` ( `name`,`url`,`photo`,`request` ) VALUES ( '%s', '%s', '%s', '%s' ) ",
3328                         dbesc($fsugg['name']),
3329                         dbesc($fsugg['url']),
3330                         dbesc($fsugg['photo']),
3331                         dbesc($fsugg['request'])
3332                 );
3333                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3334                         dbesc($fsugg['url']),
3335                         dbesc($fsugg['name']),
3336                         dbesc($fsugg['request'])
3337                 );
3338                 if(count($r)) {
3339                         $fid = $r[0]['id'];
3340                 }
3341                 // database record did not get created. Quietly give up.
3342                 else
3343                         return 0;
3344
3345
3346                 $hash = random_string();
3347
3348                 $r = q("INSERT INTO `intro` ( `uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked` )
3349                         VALUES( %d, %d, %d, '%s', '%s', '%s', %d )",
3350                         intval($fsugg['uid']),
3351                         intval($fid),
3352                         intval($fsugg['cid']),
3353                         dbesc($fsugg['body']),
3354                         dbesc($hash),
3355                         dbesc(datetime_convert()),
3356                         intval(0)
3357                 );
3358
3359                 notification(array(
3360                         'type'         => NOTIFY_SUGGEST,
3361                         'notify_flags' => $importer['notify-flags'],
3362                         'language'     => $importer['language'],
3363                         'to_name'      => $importer['username'],
3364                         'to_email'     => $importer['email'],
3365                         'uid'          => $importer['importer_uid'],
3366                         'item'         => $fsugg,
3367                         'link'         => $a->get_baseurl() . '/notifications/intros',
3368                         'source_name'  => $importer['name'],
3369                         'source_link'  => $importer['url'],
3370                         'source_photo' => $importer['photo'],
3371                         'verb'         => ACTIVITY_REQ_FRIEND,
3372                         'otype'        => 'intro'
3373                 ));
3374
3375                 return 0;
3376         }
3377
3378         $ismail = false;
3379
3380         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
3381         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
3382
3383                 logger('local_delivery: private message received');
3384
3385                 $ismail = true;
3386                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
3387
3388                 $msg = array();
3389                 $msg['uid'] = $importer['importer_uid'];
3390                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
3391                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
3392                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
3393                 $msg['contact-id'] = $importer['id'];
3394                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
3395                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
3396                 $msg['seen'] = 0;
3397                 $msg['replied'] = 0;
3398                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
3399                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
3400                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
3401
3402                 dbesc_array($msg);
3403
3404                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
3405                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
3406
3407                 // send notifications.
3408
3409                 require_once('include/enotify.php');
3410
3411                 $notif_params = array(
3412                         'type' => NOTIFY_MAIL,
3413                         'notify_flags' => $importer['notify-flags'],
3414                         'language' => $importer['language'],
3415                         'to_name' => $importer['username'],
3416                         'to_email' => $importer['email'],
3417                         'uid' => $importer['importer_uid'],
3418                         'item' => $msg,
3419                         'source_name' => $msg['from-name'],
3420                         'source_link' => $importer['url'],
3421                         'source_photo' => $importer['thumb'],
3422                         'verb' => ACTIVITY_POST,
3423                         'otype' => 'mail'
3424                 );
3425
3426                 notification($notif_params);
3427                 return 0;
3428
3429                 // NOTREACHED
3430         }
3431
3432         $community_page = 0;
3433         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
3434         if($rawtags) {
3435                 $community_page = intval($rawtags[0]['data']);
3436         }
3437         if(intval($importer['forum']) != $community_page) {
3438                 q("update contact set forum = %d where id = %d",
3439                         intval($community_page),
3440                         intval($importer['id'])
3441                 );
3442                 $importer['forum'] = (string) $community_page;
3443         }
3444
3445         logger('local_delivery: feed item count = ' . $feed->get_item_quantity());
3446
3447         // process any deleted entries
3448
3449         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
3450         if(is_array($del_entries) && count($del_entries)) {
3451                 foreach($del_entries as $dentry) {
3452                         $deleted = false;
3453                         if(isset($dentry['attribs']['']['ref'])) {
3454                                 $uri = $dentry['attribs']['']['ref'];
3455                                 $deleted = true;
3456                                 if(isset($dentry['attribs']['']['when'])) {
3457                                         $when = $dentry['attribs']['']['when'];
3458                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
3459                                 }
3460                                 else
3461                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
3462                         }
3463                         if($deleted) {
3464
3465                                 // check for relayed deletes to our conversation
3466
3467                                 $is_reply = false;
3468                                 $r = q("select * from item where uri = '%s' and uid = %d limit 1",
3469                                         dbesc($uri),
3470                                         intval($importer['importer_uid'])
3471                                 );
3472                                 if(count($r)) {
3473                                         $parent_uri = $r[0]['parent-uri'];
3474                                         if($r[0]['id'] != $r[0]['parent'])
3475                                                 $is_reply = true;
3476                                 }
3477
3478                                 if($is_reply) {
3479                                         $community = false;
3480
3481                                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3482                                                 $sql_extra = '';
3483                                                 $community = true;
3484                                                 logger('local_delivery: possible community delete');
3485                                         }
3486                                         else
3487                                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3488
3489                                         // was the top-level post for this reply written by somebody on this site?
3490                                         // Specifically, the recipient?
3491
3492                                         $is_a_remote_delete = false;
3493
3494                                         // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3495                                         $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3496                                                 `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3497                                                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3498                                                 WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3499                                                 AND `item`.`uid` = %d
3500                                                 $sql_extra
3501                                                 LIMIT 1",
3502                                                 dbesc($parent_uri),
3503                                                 dbesc($parent_uri),
3504                                                 dbesc($parent_uri),
3505                                                 intval($importer['importer_uid'])
3506                                         );
3507                                         if($r && count($r))
3508                                                 $is_a_remote_delete = true;
3509
3510                                         // Does this have the characteristics of a community or private group comment?
3511                                         // If it's a reply to a wall post on a community/prvgroup page it's a
3512                                         // valid community comment. Also forum_mode makes it valid for sure.
3513                                         // If neither, it's not.
3514
3515                                         if($is_a_remote_delete && $community) {
3516                                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3517                                                         $is_a_remote_delete = false;
3518                                                         logger('local_delivery: not a community delete');
3519                                                 }
3520                                         }
3521
3522                                         if($is_a_remote_delete) {
3523                                                 logger('local_delivery: received remote delete');
3524                                         }
3525                                 }
3526
3527                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN contact on `item`.`contact-id` = `contact`.`id`
3528                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
3529                                         dbesc($uri),
3530                                         intval($importer['importer_uid']),
3531                                         intval($importer['id'])
3532                                 );
3533
3534                                 if(count($r)) {
3535                                         $item = $r[0];
3536
3537                                         if($item['deleted'])
3538                                                 continue;
3539
3540                                         logger('local_delivery: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
3541
3542                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3543                                                 $xo = parse_xml_string($item['object'],false);
3544                                                 $xt = parse_xml_string($item['target'],false);
3545
3546                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
3547                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
3548                                                                 dbesc($xt->id),
3549                                                                 intval($importer['importer_uid'])
3550                                                         );
3551                                                         if(count($i)) {
3552
3553                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
3554
3555                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
3556                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
3557                                                                 $author_copy = (($item['origin']) ? true : false);
3558
3559                                                                 if($owner_remove && $author_copy)
3560                                                                         continue;
3561                                                                 if($author_remove || $owner_remove) {
3562                                                                         $tags = explode(',',$i[0]['tag']);
3563                                                                         $newtags = array();
3564                                                                         if(count($tags)) {
3565                                                                                 foreach($tags as $tag)
3566                                                                                         if(trim($tag) !== trim($xo->body))
3567                                                                                                 $newtags[] = trim($tag);
3568                                                                         }
3569                                                                         q("update item set tag = '%s' where id = %d",
3570                                                                                 dbesc(implode(',',$newtags)),
3571                                                                                 intval($i[0]['id'])
3572                                                                         );
3573                                                                         create_tags_from_item($i[0]['id']);
3574                                                                 }
3575                                                         }
3576                                                 }
3577                                         }
3578
3579                                         if($item['uri'] == $item['parent-uri']) {
3580                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3581                                                         `body` = '', `title` = ''
3582                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
3583                                                         dbesc($when),
3584                                                         dbesc(datetime_convert()),
3585                                                         dbesc($item['uri']),
3586                                                         intval($importer['importer_uid'])
3587                                                 );
3588                                                 create_tags_from_itemuri($item['uri'], $importer['importer_uid']);
3589                                                 create_files_from_itemuri($item['uri'], $importer['importer_uid']);
3590                                                 update_thread_uri($item['uri'], $importer['importer_uid']);
3591                                         }
3592                                         else {
3593                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3594                                                         `body` = '', `title` = ''
3595                                                         WHERE `uri` = '%s' AND `uid` = %d",
3596                                                         dbesc($when),
3597                                                         dbesc(datetime_convert()),
3598                                                         dbesc($uri),
3599                                                         intval($importer['importer_uid'])
3600                                                 );
3601                                                 create_tags_from_itemuri($uri, $importer['importer_uid']);
3602                                                 create_files_from_itemuri($uri, $importer['importer_uid']);
3603                                                 update_thread_uri($uri, $importer['importer_uid']);
3604                                                 if($item['last-child']) {
3605                                                         // ensure that last-child is set in case the comment that had it just got wiped.
3606                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
3607                                                                 dbesc(datetime_convert()),
3608                                                                 dbesc($item['parent-uri']),
3609                                                                 intval($item['uid'])
3610                                                         );
3611                                                         // who is the last child now?
3612                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
3613                                                                 ORDER BY `created` DESC LIMIT 1",
3614                                                                         dbesc($item['parent-uri']),
3615                                                                         intval($importer['importer_uid'])
3616                                                         );
3617                                                         if(count($r)) {
3618                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
3619                                                                         intval($r[0]['id'])
3620                                                                 );
3621                                                         }
3622                                                 }
3623                                                 // if this is a relayed delete, propagate it to other recipients
3624
3625                                                 if($is_a_remote_delete)
3626                                                         proc_run('php',"include/notifier.php","drop",$item['id']);
3627                                         }
3628                                 }
3629                         }
3630                 }
3631         }
3632
3633
3634         foreach($feed->get_items() as $item) {
3635
3636                 $is_reply = false;
3637                 $item_id = $item->get_id();
3638                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
3639                 if(isset($rawthread[0]['attribs']['']['ref'])) {
3640                         $is_reply = true;
3641                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
3642                 }
3643
3644                 if($is_reply) {
3645                         $community = false;
3646
3647                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3648                                 $sql_extra = '';
3649                                 $community = true;
3650                                 logger('local_delivery: possible community reply');
3651                         }
3652                         else
3653                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3654
3655                         // was the top-level post for this reply written by somebody on this site?
3656                         // Specifically, the recipient?
3657
3658                         $is_a_remote_comment = false;
3659                         $top_uri = $parent_uri;
3660
3661                         $r = q("select `item`.`parent-uri` from `item`
3662                                 WHERE `item`.`uri` = '%s'
3663                                 LIMIT 1",
3664                                 dbesc($parent_uri)
3665                         );
3666                         if($r && count($r)) {
3667                                 $top_uri = $r[0]['parent-uri'];
3668
3669                                 // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3670                                 $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3671                                         `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3672                                         INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3673                                         WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3674                                         AND `item`.`uid` = %d
3675                                         $sql_extra
3676                                         LIMIT 1",
3677                                         dbesc($top_uri),
3678                                         dbesc($top_uri),
3679                                         dbesc($top_uri),
3680                                         intval($importer['importer_uid'])
3681                                 );
3682                                 if($r && count($r))
3683                                         $is_a_remote_comment = true;
3684                         }
3685
3686                         // Does this have the characteristics of a community or private group comment?
3687                         // If it's a reply to a wall post on a community/prvgroup page it's a
3688                         // valid community comment. Also forum_mode makes it valid for sure.
3689                         // If neither, it's not.
3690
3691                         if($is_a_remote_comment && $community) {
3692                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3693                                         $is_a_remote_comment = false;
3694                                         logger('local_delivery: not a community reply');
3695                                 }
3696                         }
3697
3698                         if($is_a_remote_comment) {
3699                                 logger('local_delivery: received remote comment');
3700                                 $is_like = false;
3701                                 // remote reply to our post. Import and then notify everybody else.
3702
3703                                 $datarray = get_atom_elements($feed, $item);
3704
3705                                 $r = q("SELECT `id`, `uid`, `last-child`, `edited`, `body`  FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3706                                         dbesc($item_id),
3707                                         intval($importer['importer_uid'])
3708                                 );
3709
3710                                 // Update content if 'updated' changes
3711
3712                                 if(count($r)) {
3713                                         $iid = $r[0]['id'];
3714                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3715
3716                                                 // do not accept (ignore) an earlier edit than one we currently have.
3717                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3718                                                         continue;
3719
3720                                                 logger('received updated comment' , LOGGER_DEBUG);
3721                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3722                                                         dbesc($datarray['title']),
3723                                                         dbesc($datarray['body']),
3724                                                         dbesc($datarray['tag']),
3725                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3726                                                         dbesc(datetime_convert()),
3727                                                         dbesc($item_id),
3728                                                         intval($importer['importer_uid'])
3729                                                 );
3730                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3731
3732                                                 proc_run('php',"include/notifier.php","comment-import",$iid);
3733
3734                                         }
3735
3736                                         continue;
3737                                 }
3738
3739
3740
3741                                 $own = q("select name,url,thumb from contact where uid = %d and self = 1 limit 1",
3742                                         intval($importer['importer_uid'])
3743                                 );
3744
3745
3746                                 $datarray['type'] = 'remote-comment';
3747                                 $datarray['wall'] = 1;
3748                                 $datarray['parent-uri'] = $parent_uri;
3749                                 $datarray['uid'] = $importer['importer_uid'];
3750                                 $datarray['owner-name'] = $own[0]['name'];
3751                                 $datarray['owner-link'] = $own[0]['url'];
3752                                 $datarray['owner-avatar'] = $own[0]['thumb'];
3753                                 $datarray['contact-id'] = $importer['id'];
3754
3755                                 if(($datarray['verb'] === ACTIVITY_LIKE) || ($datarray['verb'] === ACTIVITY_DISLIKE)) {
3756                                         $is_like = true;
3757                                         $datarray['type'] = 'activity';
3758                                         $datarray['gravity'] = GRAVITY_LIKE;
3759                                         $datarray['last-child'] = 0;
3760                                         // only one like or dislike per person
3761                                         // splitted into two queries for performance issues
3762                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`parent-uri` = '%s') and deleted = 0 limit 1",
3763                                                 intval($datarray['uid']),
3764                                                 intval($datarray['contact-id']),
3765                                                 dbesc($datarray['verb']),
3766                                                 dbesc($datarray['parent-uri'])
3767
3768                                         );
3769                                         if($r && count($r))
3770                                                 continue;
3771
3772                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`thr-parent` = '%s') and deleted = 0 limit 1",
3773                                                 intval($datarray['uid']),
3774                                                 intval($datarray['contact-id']),
3775                                                 dbesc($datarray['verb']),
3776                                                 dbesc($datarray['parent-uri'])
3777
3778                                         );
3779                                         if($r && count($r))
3780                                                 continue;
3781                                 }
3782
3783                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3784
3785                                         $xo = parse_xml_string($datarray['object'],false);
3786                                         $xt = parse_xml_string($datarray['target'],false);
3787
3788                                         if(($xt->type == ACTIVITY_OBJ_NOTE) && ($xt->id)) {
3789
3790                                                 // fetch the parent item
3791
3792                                                 $tagp = q("select * from item where uri = '%s' and uid = %d limit 1",
3793                                                         dbesc($xt->id),
3794                                                         intval($importer['importer_uid'])
3795                                                 );
3796                                                 if(! count($tagp))
3797                                                         continue;
3798
3799                                                 // extract tag, if not duplicate, and this user allows tags, add to parent item
3800
3801                                                 if($xo->id && $xo->content) {
3802                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
3803                                                         if(! (stristr($tagp[0]['tag'],$newtag))) {
3804                                                                 $i = q("SELECT `blocktags` FROM `user` where `uid` = %d LIMIT 1",
3805                                                                         intval($importer['importer_uid'])
3806                                                                 );
3807                                                                 if(count($i) && ! intval($i[0]['blocktags'])) {
3808                                                                         q("UPDATE item SET tag = '%s', `edited` = '%s', `changed` = '%s' WHERE id = %d",
3809                                                                                 dbesc($tagp[0]['tag'] . (strlen($tagp[0]['tag']) ? ',' : '') . $newtag),
3810                                                                                 intval($tagp[0]['id']),
3811                                                                                 dbesc(datetime_convert()),
3812                                                                                 dbesc(datetime_convert())
3813                                                                         );
3814                                                                         create_tags_from_item($tagp[0]['id']);
3815                                                                 }
3816                                                         }
3817                                                 }
3818                                         }
3819                                 }
3820
3821
3822                                 $posted_id = item_store($datarray);
3823                                 $parent = 0;
3824
3825                                 if($posted_id) {
3826
3827                                         $datarray["id"] = $posted_id;
3828
3829                                         $r = q("SELECT `parent`, `parent-uri` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3830                                                 intval($posted_id),
3831                                                 intval($importer['importer_uid'])
3832                                         );
3833                                         if(count($r)) {
3834                                                 $parent = $r[0]['parent'];
3835                                                 $parent_uri = $r[0]['parent-uri'];
3836                                         }
3837
3838                                         if(! $is_like) {
3839                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
3840                                                         dbesc(datetime_convert()),
3841                                                         intval($importer['importer_uid']),
3842                                                         intval($r[0]['parent'])
3843                                                 );
3844
3845                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d",
3846                                                         dbesc(datetime_convert()),
3847                                                         intval($importer['importer_uid']),
3848                                                         intval($posted_id)
3849                                                 );
3850                                         }
3851
3852                                         if($posted_id && $parent) {
3853
3854                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
3855
3856                                                 if((! $is_like) && (! $importer['self'])) {
3857
3858                                                         require_once('include/enotify.php');
3859
3860                                                         notification(array(
3861                                                                 'type'         => NOTIFY_COMMENT,
3862                                                                 'notify_flags' => $importer['notify-flags'],
3863                                                                 'language'     => $importer['language'],
3864                                                                 'to_name'      => $importer['username'],
3865                                                                 'to_email'     => $importer['email'],
3866                                                                 'uid'          => $importer['importer_uid'],
3867                                                                 'item'         => $datarray,
3868                                                                 'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
3869                                                                 'source_name'  => stripslashes($datarray['author-name']),
3870                                                                 'source_link'  => $datarray['author-link'],
3871                                                                 'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
3872                                                                         ? $importer['thumb'] : $datarray['author-avatar']),
3873                                                                 'verb'         => ACTIVITY_POST,
3874                                                                 'otype'        => 'item',
3875                                                                 'parent'       => $parent,
3876                                                                 'parent_uri'   => $parent_uri,
3877                                                         ));
3878
3879                                                 }
3880                                         }
3881
3882                                         return 0;
3883                                         // NOTREACHED
3884                                 }
3885                         }
3886                         else {
3887
3888                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
3889
3890                                 $item_id  = $item->get_id();
3891                                 $datarray = get_atom_elements($feed,$item);
3892
3893                                 if($importer['rel'] == CONTACT_IS_FOLLOWER)
3894                                         continue;
3895
3896                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3897                                         dbesc($item_id),
3898                                         intval($importer['importer_uid'])
3899                                 );
3900
3901                                 // Update content if 'updated' changes
3902
3903                                 if(count($r)) {
3904                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3905
3906                                                 // do not accept (ignore) an earlier edit than one we currently have.
3907                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3908                                                         continue;
3909
3910                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3911                                                         dbesc($datarray['title']),
3912                                                         dbesc($datarray['body']),
3913                                                         dbesc($datarray['tag']),
3914                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3915                                                         dbesc(datetime_convert()),
3916                                                         dbesc($item_id),
3917                                                         intval($importer['importer_uid'])
3918                                                 );
3919                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3920                                         }
3921
3922                                         // update last-child if it changes
3923
3924                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
3925                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
3926                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
3927                                                         dbesc(datetime_convert()),
3928                                                         dbesc($parent_uri),
3929                                                         intval($importer['importer_uid'])
3930                                                 );
3931                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
3932                                                         intval($allow[0]['data']),
3933                                                         dbesc(datetime_convert()),
3934                                                         dbesc($item_id),
3935                                                         intval($importer['importer_uid'])
3936                                                 );
3937                                         }
3938                                         continue;
3939                                 }
3940
3941                                 $datarray['parent-uri'] = $parent_uri;
3942                                 $datarray['uid'] = $importer['importer_uid'];
3943                                 $datarray['contact-id'] = $importer['id'];
3944                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
3945                                         $datarray['type'] = 'activity';
3946                                         $datarray['gravity'] = GRAVITY_LIKE;
3947                                         // only one like or dislike per person
3948                                         // splitted into two queries for performance issues
3949                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
3950                                                 intval($datarray['uid']),
3951                                                 intval($datarray['contact-id']),
3952                                                 dbesc($datarray['verb']),
3953                                                 dbesc($parent_uri)
3954                                         );
3955                                         if($r && count($r))
3956                                                 continue;
3957
3958                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
3959                                                 intval($datarray['uid']),
3960                                                 intval($datarray['contact-id']),
3961                                                 dbesc($datarray['verb']),
3962                                                 dbesc($parent_uri)
3963                                         );
3964                                         if($r && count($r))
3965                                                 continue;
3966
3967                                 }
3968
3969                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3970
3971                                         $xo = parse_xml_string($datarray['object'],false);
3972                                         $xt = parse_xml_string($datarray['target'],false);
3973
3974                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
3975                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
3976                                                         dbesc($xt->id),
3977                                                         intval($importer['importer_uid'])
3978                                                 );
3979                                                 if(! count($r))
3980                                                         continue;
3981
3982                                                 // extract tag, if not duplicate, add to parent item
3983                                                 if($xo->content) {
3984                                                         if(! (stristr($r[0]['tag'],trim($xo->content)))) {
3985                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
3986                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
3987                                                                         intval($r[0]['id'])
3988                                                                 );
3989                                                                 create_tags_from_item($r[0]['id']);
3990                                                         }
3991                                                 }
3992                                         }
3993                                 }
3994
3995                                 $posted_id = item_store($datarray);
3996
3997                                 // find out if our user is involved in this conversation and wants to be notified.
3998
3999                                 if(!x($datarray['type']) || $datarray['type'] != 'activity') {
4000
4001                                         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0",
4002                                                 dbesc($top_uri),
4003                                                 intval($importer['importer_uid'])
4004                                         );
4005
4006                                         if(count($myconv)) {
4007                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
4008
4009                                                 // first make sure this isn't our own post coming back to us from a wall-to-wall event
4010                                                 if(! link_compare($datarray['author-link'],$importer_url)) {
4011
4012
4013                                                         foreach($myconv as $conv) {
4014
4015                                                                 // now if we find a match, it means we're in this conversation
4016
4017                                                                 if(! link_compare($conv['author-link'],$importer_url))
4018                                                                         continue;
4019
4020                                                                 require_once('include/enotify.php');
4021
4022                                                                 $conv_parent = $conv['parent'];
4023
4024                                                                 notification(array(
4025                                                                         'type'         => NOTIFY_COMMENT,
4026                                                                         'notify_flags' => $importer['notify-flags'],
4027                                                                         'language'     => $importer['language'],
4028                                                                         'to_name'      => $importer['username'],
4029                                                                         'to_email'     => $importer['email'],
4030                                                                         'uid'          => $importer['importer_uid'],
4031                                                                         'item'         => $datarray,
4032                                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4033                                                                         'source_name'  => stripslashes($datarray['author-name']),
4034                                                                         'source_link'  => $datarray['author-link'],
4035                                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4036                                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4037                                                                         'verb'         => ACTIVITY_POST,
4038                                                                         'otype'        => 'item',
4039                                                                         'parent'       => $conv_parent,
4040                                                                         'parent_uri'   => $parent_uri
4041
4042                                                                 ));
4043
4044                                                                 // only send one notification
4045                                                                 break;
4046                                                         }
4047                                                 }
4048                                         }
4049                                 }
4050                                 continue;
4051                         }
4052                 }
4053
4054                 else {
4055
4056                         // Head post of a conversation. Have we seen it? If not, import it.
4057
4058
4059                         $item_id  = $item->get_id();
4060                         $datarray = get_atom_elements($feed,$item);
4061
4062                         if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
4063                                 $ev = bbtoevent($datarray['body']);
4064                                 if(x($ev,'desc') && x($ev,'start')) {
4065                                         $ev['cid'] = $importer['id'];
4066                                         $ev['uid'] = $importer['uid'];
4067                                         $ev['uri'] = $item_id;
4068                                         $ev['edited'] = $datarray['edited'];
4069                                         $ev['private'] = $datarray['private'];
4070
4071                                         $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4072                                                 dbesc($item_id),
4073                                                 intval($importer['uid'])
4074                                         );
4075                                         if(count($r))
4076                                                 $ev['id'] = $r[0]['id'];
4077                                         $xyz = event_store($ev);
4078                                         continue;
4079                                 }
4080                         }
4081
4082                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4083                                 dbesc($item_id),
4084                                 intval($importer['importer_uid'])
4085                         );
4086
4087                         // Update content if 'updated' changes
4088
4089                         if(count($r)) {
4090                                 if (edited_timestamp_is_newer($r[0], $datarray)) {
4091
4092                                         // do not accept (ignore) an earlier edit than one we currently have.
4093                                         if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
4094                                                 continue;
4095
4096                                         $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4097                                                 dbesc($datarray['title']),
4098                                                 dbesc($datarray['body']),
4099                                                 dbesc($datarray['tag']),
4100                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
4101                                                 dbesc(datetime_convert()),
4102                                                 dbesc($item_id),
4103                                                 intval($importer['importer_uid'])
4104                                         );
4105                                         create_tags_from_itemuri($item_id, $importer['importer_uid']);
4106                                         update_thread_uri($item_id, $importer['importer_uid']);
4107                                 }
4108
4109                                 // update last-child if it changes
4110
4111                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
4112                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
4113                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4114                                                 intval($allow[0]['data']),
4115                                                 dbesc(datetime_convert()),
4116                                                 dbesc($item_id),
4117                                                 intval($importer['importer_uid'])
4118                                         );
4119                                 }
4120                                 continue;
4121                         }
4122
4123                         $datarray['parent-uri'] = $item_id;
4124                         $datarray['uid'] = $importer['importer_uid'];
4125                         $datarray['contact-id'] = $importer['id'];
4126
4127
4128                         if(! link_compare($datarray['owner-link'],$importer['url'])) {
4129                                 // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
4130                                 // but otherwise there's a possible data mixup on the sender's system.
4131                                 // the tgroup delivery code called from item_store will correct it if it's a forum,
4132                                 // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
4133                                 logger('local_delivery: Correcting item owner.', LOGGER_DEBUG);
4134                                 $datarray['owner-name']   = $importer['senderName'];
4135                                 $datarray['owner-link']   = $importer['url'];
4136                                 $datarray['owner-avatar'] = $importer['thumb'];
4137                         }
4138
4139                         if(($importer['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['importer_uid'],$datarray)))
4140                                 continue;
4141
4142                         // This is my contact on another system, but it's really me.
4143                         // Turn this into a wall post.
4144                         $notify = item_is_remote_self($importer, $datarray);
4145
4146                         $posted_id = item_store($datarray, false, $notify);
4147
4148                         if(stristr($datarray['verb'],ACTIVITY_POKE)) {
4149                                 $verb = urldecode(substr($datarray['verb'],strpos($datarray['verb'],'#')+1));
4150                                 if(! $verb)
4151                                         continue;
4152                                 $xo = parse_xml_string($datarray['object'],false);
4153
4154                                 if(($xo->type == ACTIVITY_OBJ_PERSON) && ($xo->id)) {
4155
4156                                         // somebody was poked/prodded. Was it me?
4157
4158                                         $links = parse_xml_string("<links>".unxmlify($xo->link)."</links>",false);
4159
4160                                 foreach($links->link as $l) {
4161                                 $atts = $l->attributes();
4162                                 switch($atts['rel']) {
4163                                         case "alternate":
4164                                                                 $Blink = $atts['href'];
4165                                                                 break;
4166                                                         default:
4167                                                                 break;
4168                                     }
4169                                 }
4170                                         if($Blink && link_compare($Blink,$a->get_baseurl() . '/profile/' . $importer['nickname'])) {
4171
4172                                                 // send a notification
4173                                                 require_once('include/enotify.php');
4174
4175                                                 notification(array(
4176                                                         'type'         => NOTIFY_POKE,
4177                                                         'notify_flags' => $importer['notify-flags'],
4178                                                         'language'     => $importer['language'],
4179                                                         'to_name'      => $importer['username'],
4180                                                         'to_email'     => $importer['email'],
4181                                                         'uid'          => $importer['importer_uid'],
4182                                                         'item'         => $datarray,
4183                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4184                                                         'source_name'  => stripslashes($datarray['author-name']),
4185                                                         'source_link'  => $datarray['author-link'],
4186                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4187                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4188                                                         'verb'         => $datarray['verb'],
4189                                                         'otype'        => 'person',
4190                                                         'activity'     => $verb,
4191                                                         'parent'       => $datarray['parent']
4192                                                 ));
4193                                         }
4194                                 }
4195                         }
4196
4197                         continue;
4198                 }
4199         }
4200
4201         return 0;
4202         // NOTREACHED
4203
4204 }
4205
4206
4207 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
4208         $url = notags(trim($datarray['author-link']));
4209         $name = notags(trim($datarray['author-name']));
4210         $photo = notags(trim($datarray['author-avatar']));
4211
4212         if (is_object($item)) {
4213                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
4214                 if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
4215                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
4216         } else
4217                 $nick = $item;
4218
4219         if(is_array($contact)) {
4220                 if(($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
4221                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
4222                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
4223                                 intval(CONTACT_IS_FRIEND),
4224                                 intval($contact['id']),
4225                                 intval($importer['uid'])
4226                         );
4227                 }
4228                 // send email notification to owner?
4229         }
4230         else {
4231
4232                 // create contact record
4233
4234                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
4235                         `blocked`, `readonly`, `pending`, `writable` )
4236                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
4237                         intval($importer['uid']),
4238                         dbesc(datetime_convert()),
4239                         dbesc($url),
4240                         dbesc(normalise_link($url)),
4241                         dbesc($name),
4242                         dbesc($nick),
4243                         dbesc($photo),
4244                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
4245                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
4246                 );
4247                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
4248                                 intval($importer['uid']),
4249                                 dbesc($url)
4250                 );
4251                 if(count($r))
4252                                 $contact_record = $r[0];
4253
4254                 // create notification
4255                 $hash = random_string();
4256
4257                 if(is_array($contact_record)) {
4258                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
4259                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
4260                                 intval($importer['uid']),
4261                                 intval($contact_record['id']),
4262                                 dbesc($hash),
4263                                 dbesc(datetime_convert())
4264                         );
4265                 }
4266
4267                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
4268                         intval($importer['uid'])
4269                 );
4270                 $a = get_app();
4271                 if(count($r)) {
4272
4273                         if(intval($r[0]['def_gid'])) {
4274                                 require_once('include/group.php');
4275                                 group_add_member($r[0]['uid'],'',$contact_record['id'],$r[0]['def_gid']);
4276                         }
4277
4278                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) &&
4279                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE))) {
4280
4281                                 notification(array(
4282                                         'type'         => NOTIFY_INTRO,
4283                                         'notify_flags' => $r[0]['notify-flags'],
4284                                         'language'     => $r[0]['language'],
4285                                         'to_name'      => $r[0]['username'],
4286                                         'to_email'     => $r[0]['email'],
4287                                         'uid'          => $r[0]['uid'],
4288                                         'link'             => $a->get_baseurl() . '/notifications/intro',
4289                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
4290                                         'source_link'  => $contact_record['url'],
4291                                         'source_photo' => $contact_record['photo'],
4292                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
4293                                         'otype'        => 'intro'
4294                                 ));
4295
4296                         }
4297                 }
4298         }
4299 }
4300
4301 function lose_follower($importer,$contact,$datarray,$item) {
4302
4303         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
4304                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4305                         intval(CONTACT_IS_SHARING),
4306                         intval($contact['id'])
4307                 );
4308         }
4309         else {
4310                 contact_remove($contact['id']);
4311         }
4312 }
4313
4314 function lose_sharer($importer,$contact,$datarray,$item) {
4315
4316         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
4317                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4318                         intval(CONTACT_IS_FOLLOWER),
4319                         intval($contact['id'])
4320                 );
4321         }
4322         else {
4323                 contact_remove($contact['id']);
4324         }
4325 }
4326
4327
4328 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
4329
4330         $a = get_app();
4331
4332         if(is_array($importer)) {
4333                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
4334                         intval($importer['uid'])
4335                 );
4336         }
4337
4338         // Diaspora has different message-ids in feeds than they do
4339         // through the direct Diaspora protocol. If we try and use
4340         // the feed, we'll get duplicates. So don't.
4341
4342         if((! count($r)) || $contact['network'] === NETWORK_DIASPORA)
4343                 return;
4344
4345         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
4346
4347         // Use a single verify token, even if multiple hubs
4348
4349         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
4350
4351         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
4352
4353         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
4354
4355         if(!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
4356                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
4357                         dbesc($verify_token),
4358                         intval($contact['id'])
4359                 );
4360         }
4361
4362         post_url($url,$params);
4363
4364         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
4365
4366         return;
4367
4368 }
4369
4370
4371 function atom_author($tag,$name,$uri,$h,$w,$photo) {
4372         $o = '';
4373         if(! $tag)
4374                 return $o;
4375         $name = xmlify($name);
4376         $uri = xmlify($uri);
4377         $h = intval($h);
4378         $w = intval($w);
4379         $photo = xmlify($photo);
4380
4381
4382         $o .= "<$tag>\r\n";
4383         $o .= "\t<name>$name</name>\r\n";
4384         $o .= "\t<uri>$uri</uri>\r\n";
4385         $o .= "\t".'<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4386         $o .= "\t".'<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4387
4388         if ($tag == "author") {
4389                 $r = q("SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
4390                                 `profile`.`name`, `profile`.`pub_keywords`, `profile`.`about`,
4391                                 `profile`.`homepage`,`contact`.`nick` FROM `profile`
4392                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
4393                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
4394                                 WHERE `profile`.`is-default` AND `contact`.`self` AND
4395                                         NOT `user`.`hidewall` AND `contact`.`nurl`='%s'",
4396                         dbesc(normalise_link($uri)));
4397                 if ($r) {
4398                         $location = '';
4399                         if($r[0]['locality'])
4400                                 $location .= $r[0]['locality'];
4401                         if($r[0]['region']) {
4402                                 if($location)
4403                                         $location .= ', ';
4404                                 $location .= $r[0]['region'];
4405                         }
4406                         if($r[0]['country-name']) {
4407                                 if($location)
4408                                         $location .= ', ';
4409                                 $location .= $r[0]['country-name'];
4410                         }
4411
4412                         $o .= "\t<poco:preferredUsername>".xmlify($r[0]["nick"])."</poco:preferredUsername>\r\n";
4413                         $o .= "\t<poco:displayName>".xmlify($r[0]["name"])."</poco:displayName>\r\n";
4414                         $o .= "\t<poco:note>".xmlify($r[0]["about"])."</poco:note>\r\n";
4415                         $o .= "\t<poco:address>\r\n";
4416                         $o .= "\t\t<poco:formatted>".xmlify($location)."</poco:formatted>\r\n";
4417                         $o .= "\t</poco:address>\r\n";
4418                         $o .= "\t<poco:urls>\r\n";
4419                         $o .= "\t<poco:type>homepage</poco:type>\r\n";
4420                         $o .= "\t\t<poco:value>".xmlify($r[0]["homepage"])."</poco:value>\r\n";
4421                         $o .= "\t\t<poco:primary>true</poco:primary>\r\n";
4422                         $o .= "\t</poco:urls>\r\n";
4423                 }
4424         }
4425
4426         call_hooks('atom_author', $o);
4427
4428         $o .= "</$tag>\r\n";
4429         return $o;
4430 }
4431
4432 function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
4433
4434         $a = get_app();
4435
4436         if(! $item['parent'])
4437                 return;
4438
4439         if($item['deleted'])
4440                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
4441
4442
4443         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
4444                 $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid);
4445         else
4446                 $body = $item['body'];
4447
4448
4449         $o = "\r\n\r\n<entry>\r\n";
4450
4451         if(is_array($author))
4452                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
4453         else
4454                 $o .= atom_author('author',(($item['author-name']) ? $item['author-name'] : $item['name']),(($item['author-link']) ? $item['author-link'] : $item['url']),80,80,(($item['author-avatar']) ? $item['author-avatar'] : $item['thumb']));
4455         if(strlen($item['owner-name']))
4456                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
4457
4458         if(($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
4459                 $parent = q("SELECT `guid` FROM `item` WHERE `id` = %d", intval($item["parent"]));
4460                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
4461                 $o .= '<thr:in-reply-to ref="'.xmlify($parent_item).'" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$parent[0]['guid']).'" />'."\r\n";
4462         }
4463
4464         $htmlbody = $body;
4465
4466         if ($item['title'] != "")
4467                 $htmlbody = "[b]".$item['title']."[/b]\n\n".$htmlbody;
4468
4469         $htmlbody = bbcode($htmlbody, false, false, 7);
4470
4471         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
4472         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
4473         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
4474         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
4475         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
4476         $o .= '<content type="' . $type . '" >' . xmlify((($type === 'html') ? $htmlbody : $body)) . '</content>' . "\r\n";
4477         $o .= '<link rel="alternate" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$item['guid']).'" />'."\r\n";
4478
4479         $o .= '<status_net notice_id="'.$item['id'].'"></status_net>'."\r\n";
4480
4481         if($comment)
4482                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
4483
4484         if($item['location']) {
4485                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
4486                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
4487         }
4488
4489         if($item['coord'])
4490                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
4491
4492         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
4493                 $o .= '<dfrn:private>' . (($item['private']) ? $item['private'] : 1) . '</dfrn:private>' . "\r\n";
4494
4495         if($item['extid'])
4496                 $o .= '<dfrn:extid>' . xmlify($item['extid']) . '</dfrn:extid>' . "\r\n";
4497         if($item['bookmark'])
4498                 $o .= '<dfrn:bookmark>true</dfrn:bookmark>' . "\r\n";
4499
4500         if($item['app'])
4501                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
4502
4503         if($item['guid'])
4504                 $o .= '<dfrn:diaspora_guid>' . $item['guid'] . '</dfrn:diaspora_guid>' . "\r\n";
4505
4506         if($item['signed_text']) {
4507                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
4508                 $o .= '<dfrn:diaspora_signature>' . xmlify($sign) . '</dfrn:diaspora_signature>' . "\r\n";
4509         }
4510
4511         $verb = construct_verb($item);
4512         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
4513         $actobj = construct_activity_object($item);
4514         if(strlen($actobj))
4515                 $o .= $actobj;
4516         $actarg = construct_activity_target($item);
4517         if(strlen($actarg))
4518                 $o .= $actarg;
4519
4520         $tags = item_getfeedtags($item);
4521         if(count($tags)) {
4522                 foreach($tags as $t)
4523                         if (($type != 'html') OR ($t[0] != "@"))
4524                                 $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
4525         }
4526
4527         // To-Do:
4528         // To support these elements, the API needs to be enhanced
4529         //$o .= '<link rel="ostatus:conversation" href="'.xmlify($a->get_baseurl().'/display/'.$owner['nickname'].'/'.$item['parent']).'"/>'."\r\n";
4530         //$o .= "\t".'<link rel="self" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4531         //$o .= "\t".'<link rel="edit" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4532
4533         $o .= item_get_attachment($item);
4534
4535         $o .= item_getfeedattach($item);
4536
4537         $mentioned = get_mentions($item);
4538         if($mentioned)
4539                 $o .= $mentioned;
4540
4541         call_hooks('atom_entry', $o);
4542
4543         $o .= '</entry>' . "\r\n";
4544
4545         return $o;
4546 }
4547
4548 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
4549
4550         if(get_config('system','disable_embedded'))
4551                 return $s;
4552
4553         $a = get_app();
4554
4555         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
4556         $site = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://'));
4557
4558         $orig_body = $s;
4559         $new_body = '';
4560
4561         $img_start = strpos($orig_body, '[img');
4562         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4563         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4564         while( ($img_st_close !== false) && ($img_len !== false) ) {
4565
4566                 $img_st_close++; // make it point to AFTER the closing bracket
4567                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
4568
4569                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
4570
4571
4572                 if(stristr($image , $site . '/photo/')) {
4573                         // Only embed locally hosted photos
4574                         $replace = false;
4575                         $i = basename($image);
4576                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
4577                         $x = strpos($i,'-');
4578
4579                         if($x) {
4580                                 $res = substr($i,$x+1);
4581                                 $i = substr($i,0,$x);
4582                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
4583                                         dbesc($i),
4584                                         intval($res),
4585                                         intval($uid)
4586                                 );
4587                                 if($r) {
4588
4589                                         // Check to see if we should replace this photo link with an embedded image
4590                                         // 1. No need to do so if the photo is public
4591                                         // 2. If there's a contact-id provided, see if they're in the access list
4592                                         //    for the photo. If so, embed it.
4593                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
4594                                         //    permissions, regardless of order but first check to see if they're an exact
4595                                         //    match to save some processing overhead.
4596
4597                                         if(has_permissions($r[0])) {
4598                                                 if($cid) {
4599                                                         $recips = enumerate_permissions($r[0]);
4600                                                         if(in_array($cid, $recips)) {
4601                                                                 $replace = true;
4602                                                         }
4603                                                 }
4604                                                 elseif($item) {
4605                                                         if(compare_permissions($item,$r[0]))
4606                                                                 $replace = true;
4607                                                 }
4608                                         }
4609                                         if($replace) {
4610                                                 $data = $r[0]['data'];
4611                                                 $type = $r[0]['type'];
4612
4613                                                 // If a custom width and height were specified, apply before embedding
4614                                                 if(preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
4615                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
4616
4617                                                         $width = intval($match[1]);
4618                                                         $height = intval($match[2]);
4619
4620                                                         $ph = new Photo($data, $type);
4621                                                         if($ph->is_valid()) {
4622                                                                 $ph->scaleImage(max($width, $height));
4623                                                                 $data = $ph->imageString();
4624                                                                 $type = $ph->getType();
4625                                                         }
4626                                                 }
4627
4628                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
4629                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
4630                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
4631                                         }
4632                                 }
4633                         }
4634                 }
4635
4636                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
4637                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
4638                 if($orig_body === false)
4639                         $orig_body = '';
4640
4641                 $img_start = strpos($orig_body, '[img');
4642                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4643                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4644         }
4645
4646         $new_body = $new_body . $orig_body;
4647
4648         return($new_body);
4649 }
4650
4651
4652 function has_permissions($obj) {
4653         if(($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
4654                 return true;
4655         return false;
4656 }
4657
4658 function compare_permissions($obj1,$obj2) {
4659         // first part is easy. Check that these are exactly the same.
4660         if(($obj1['allow_cid'] == $obj2['allow_cid'])
4661                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
4662                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
4663                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
4664                 return true;
4665
4666         // This is harder. Parse all the permissions and compare the resulting set.
4667
4668         $recipients1 = enumerate_permissions($obj1);
4669         $recipients2 = enumerate_permissions($obj2);
4670         sort($recipients1);
4671         sort($recipients2);
4672         if($recipients1 == $recipients2)
4673                 return true;
4674         return false;
4675 }
4676
4677 // returns an array of contact-ids that are allowed to see this object
4678
4679 function enumerate_permissions($obj) {
4680         require_once('include/group.php');
4681         $allow_people = expand_acl($obj['allow_cid']);
4682         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
4683         $deny_people  = expand_acl($obj['deny_cid']);
4684         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
4685         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
4686         $deny         = array_unique(array_merge($deny_people,$deny_groups));
4687         $recipients   = array_diff($recipients,$deny);
4688         return $recipients;
4689 }
4690
4691 function item_getfeedtags($item) {
4692         $ret = array();
4693         $matches = false;
4694         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4695         if($cnt) {
4696                 for($x = 0; $x < $cnt; $x ++) {
4697                         if($matches[1][$x])
4698                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
4699                 }
4700         }
4701         $matches = false;
4702         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4703         if($cnt) {
4704                 for($x = 0; $x < $cnt; $x ++) {
4705                         if($matches[1][$x])
4706                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
4707                 }
4708         }
4709         return $ret;
4710 }
4711
4712 function item_get_attachment($item) {
4713         $o = "";
4714         $siteinfo = get_attached_data($item["body"]);
4715
4716         switch($siteinfo["type"]) {
4717                 case 'link':
4718                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4719                         break;
4720                 case 'photo':
4721                         $imgdata = get_photo_info($siteinfo["image"]);
4722                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["image"]).'" type="'.$imgdata["mime"].'" length="'.$imgdata["size"].'"/>'."\r\n";
4723                         break;
4724                 case 'video':
4725                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4726                         break;
4727                 default:
4728                         break;
4729         }
4730
4731         return $o;
4732 }
4733
4734 function item_getfeedattach($item) {
4735         $ret = '';
4736         $arr = explode('[/attach],',$item['attach']);
4737         if(count($arr)) {
4738                 foreach($arr as $r) {
4739                         $matches = false;
4740                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches);
4741                         if($cnt) {
4742                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
4743                                 if(intval($matches[2]))
4744                                         $ret .= 'length="' . intval($matches[2]) . '" ';
4745                                 if($matches[4] !== ' ')
4746                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
4747                                 $ret .= ' />' . "\r\n";
4748                         }
4749                 }
4750         }
4751         return $ret;
4752 }
4753
4754
4755
4756 function item_expire($uid, $days, $network = "", $force = false) {
4757
4758         if((! $uid) || ($days < 1))
4759                 return;
4760
4761         // $expire_network_only = save your own wall posts
4762         // and just expire conversations started by others
4763
4764         $expire_network_only = get_pconfig($uid,'expire','network_only');
4765         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
4766
4767         if ($network != "") {
4768                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
4769                 // There is an index "uid_network_received" but not "uid_network_created"
4770                 // This avoids the creation of another index just for one purpose.
4771                 // And it doesn't really matter wether to look at "received" or "created"
4772                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4773         } else
4774                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4775
4776         $r = q("SELECT * FROM `item`
4777                 WHERE `uid` = %d $range
4778                 AND `id` = `parent`
4779                 $sql_extra
4780                 AND `deleted` = 0",
4781                 intval($uid),
4782                 intval($days)
4783         );
4784
4785         if(! count($r))
4786                 return;
4787
4788         $expire_items = get_pconfig($uid, 'expire','items');
4789         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
4790
4791         // Forcing expiring of items - but not notes and marked items
4792         if ($force)
4793                 $expire_items = true;
4794
4795         $expire_notes = get_pconfig($uid, 'expire','notes');
4796         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
4797
4798         $expire_starred = get_pconfig($uid, 'expire','starred');
4799         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
4800
4801         $expire_photos = get_pconfig($uid, 'expire','photos');
4802         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
4803
4804         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
4805
4806         foreach($r as $item) {
4807
4808                 // don't expire filed items
4809
4810                 if(strpos($item['file'],'[') !== false)
4811                         continue;
4812
4813                 // Only expire posts, not photos and photo comments
4814
4815                 if($expire_photos==0 && strlen($item['resource-id']))
4816                         continue;
4817                 if($expire_starred==0 && intval($item['starred']))
4818                         continue;
4819                 if($expire_notes==0 && $item['type']=='note')
4820                         continue;
4821                 if($expire_items==0 && $item['type']!='note')
4822                         continue;
4823
4824                 drop_item($item['id'],false);
4825         }
4826
4827         proc_run('php',"include/notifier.php","expire","$uid");
4828
4829 }
4830
4831
4832 function drop_items($items) {
4833         $uid = 0;
4834
4835         if(! local_user() && ! remote_user())
4836                 return;
4837
4838         if(count($items)) {
4839                 foreach($items as $item) {
4840                         $owner = drop_item($item,false);
4841                         if($owner && ! $uid)
4842                                 $uid = $owner;
4843                 }
4844         }
4845
4846         // multiple threads may have been deleted, send an expire notification
4847
4848         if($uid)
4849                 proc_run('php',"include/notifier.php","expire","$uid");
4850 }
4851
4852
4853 function drop_item($id,$interactive = true) {
4854
4855         $a = get_app();
4856
4857         // locate item to be deleted
4858
4859         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
4860                 intval($id)
4861         );
4862
4863         if(! count($r)) {
4864                 if(! $interactive)
4865                         return 0;
4866                 notice( t('Item not found.') . EOL);
4867                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4868         }
4869
4870         $item = $r[0];
4871
4872         $owner = $item['uid'];
4873
4874         $cid = 0;
4875
4876         // check if logged in user is either the author or owner of this item
4877
4878         if(is_array($_SESSION['remote'])) {
4879                 foreach($_SESSION['remote'] as $visitor) {
4880                         if($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
4881                                 $cid = $visitor['cid'];
4882                                 break;
4883                         }
4884                 }
4885         }
4886
4887
4888         if((local_user() == $item['uid']) || ($cid) || (! $interactive)) {
4889
4890                 // Check if we should do HTML-based delete confirmation
4891                 if($_REQUEST['confirm']) {
4892                         // <form> can't take arguments in its "action" parameter
4893                         // so add any arguments as hidden inputs
4894                         $query = explode_querystring($a->query_string);
4895                         $inputs = array();
4896                         foreach($query['args'] as $arg) {
4897                                 if(strpos($arg, 'confirm=') === false) {
4898                                         $arg_parts = explode('=', $arg);
4899                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
4900                                 }
4901                         }
4902
4903                         return replace_macros(get_markup_template('confirm.tpl'), array(
4904                                 '$method' => 'get',
4905                                 '$message' => t('Do you really want to delete this item?'),
4906                                 '$extra_inputs' => $inputs,
4907                                 '$confirm' => t('Yes'),
4908                                 '$confirm_url' => $query['base'],
4909                                 '$confirm_name' => 'confirmed',
4910                                 '$cancel' => t('Cancel'),
4911                         ));
4912                 }
4913                 // Now check how the user responded to the confirmation query
4914                 if($_REQUEST['canceled']) {
4915                         goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4916                 }
4917
4918                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
4919                 // delete the item
4920
4921                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
4922                         dbesc(datetime_convert()),
4923                         dbesc(datetime_convert()),
4924                         intval($item['id'])
4925                 );
4926                 create_tags_from_item($item['id']);
4927                 create_files_from_item($item['id']);
4928                 delete_thread($item['id'], $item['parent-uri']);
4929
4930                 // clean up categories and tags so they don't end up as orphans
4931
4932                 $matches = false;
4933                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
4934                 if($cnt) {
4935                         foreach($matches as $mtch) {
4936                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
4937                         }
4938                 }
4939
4940                 $matches = false;
4941
4942                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
4943                 if($cnt) {
4944                         foreach($matches as $mtch) {
4945                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
4946                         }
4947                 }
4948
4949                 // If item is a link to a photo resource, nuke all the associated photos
4950                 // (visitors will not have photo resources)
4951                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
4952                 // generate a resource-id and therefore aren't intimately linked to the item.
4953
4954                 if(strlen($item['resource-id'])) {
4955                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
4956                                 dbesc($item['resource-id']),
4957                                 intval($item['uid'])
4958                         );
4959                         // ignore the result
4960                 }
4961
4962                 // If item is a link to an event, nuke the event record.
4963
4964                 if(intval($item['event-id'])) {
4965                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
4966                                 intval($item['event-id']),
4967                                 intval($item['uid'])
4968                         );
4969                         // ignore the result
4970                 }
4971
4972                 // If item has attachments, drop them
4973
4974                 foreach(explode(",",$item['attach']) as $attach){
4975                         preg_match("|attach/(\d+)|", $attach, $matches);
4976                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
4977                                 intval($matches[1]),
4978                                 local_user()
4979                         );
4980                         // ignore the result
4981                 }
4982
4983
4984                 // clean up item_id and sign meta-data tables
4985
4986                 /*
4987                 // Old code - caused very long queries and warning entries in the mysql logfiles:
4988
4989                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
4990                         intval($item['id']),
4991                         intval($item['uid'])
4992                 );
4993
4994                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
4995                         intval($item['id']),
4996                         intval($item['uid'])
4997                 );
4998                 */
4999
5000                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
5001
5002                 // Creating list of parents
5003                 $r = q("select id from item where parent = %d and uid = %d",
5004                         intval($item['id']),
5005                         intval($item['uid'])
5006                 );
5007
5008                 $parentid = "";
5009
5010                 foreach ($r AS $row) {
5011                         if ($parentid != "")
5012                                 $parentid .= ", ";
5013
5014                         $parentid .= $row["id"];
5015                 }
5016
5017                 // Now delete them
5018                 if ($parentid != "") {
5019                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
5020
5021                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
5022                 }
5023
5024                 // If it's the parent of a comment thread, kill all the kids
5025
5026                 if($item['uri'] == $item['parent-uri']) {
5027                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
5028                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
5029                                 dbesc(datetime_convert()),
5030                                 dbesc(datetime_convert()),
5031                                 dbesc($item['parent-uri']),
5032                                 intval($item['uid'])
5033                         );
5034                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
5035                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
5036                         delete_thread_uri($item['parent-uri'], $item['uid']);
5037                         // ignore the result
5038                 }
5039                 else {
5040                         // ensure that last-child is set in case the comment that had it just got wiped.
5041                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
5042                                 dbesc(datetime_convert()),
5043                                 dbesc($item['parent-uri']),
5044                                 intval($item['uid'])
5045                         );
5046                         // who is the last child now?
5047                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
5048                                 dbesc($item['parent-uri']),
5049                                 intval($item['uid'])
5050                         );
5051                         if(count($r)) {
5052                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
5053                                         intval($r[0]['id'])
5054                                 );
5055                         }
5056
5057                         // Add a relayable_retraction signature for Diaspora.
5058                         store_diaspora_retract_sig($item, $a->user, $a->get_baseurl());
5059                 }
5060
5061                 $drop_id = intval($item['id']);
5062
5063                 // send the notification upstream/downstream as the case may be
5064
5065                 proc_run('php',"include/notifier.php","drop","$drop_id");
5066
5067                 if(! $interactive)
5068                         return $owner;
5069                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5070                 //NOTREACHED
5071         }
5072         else {
5073                 if(! $interactive)
5074                         return 0;
5075                 notice( t('Permission denied.') . EOL);
5076                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5077                 //NOTREACHED
5078         }
5079
5080 }
5081
5082
5083 function first_post_date($uid,$wall = false) {
5084         $r = q("select id, created from item
5085                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
5086                 and id = parent
5087                 order by created asc limit 1",
5088                 intval($uid),
5089                 intval($wall ? 1 : 0)
5090         );
5091         if(count($r)) {
5092 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
5093                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
5094         }
5095         return false;
5096 }
5097
5098 /* modified posted_dates() {below} to arrange the list in years */
5099 function list_post_dates($uid, $wall) {
5100         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5101
5102         $dthen = first_post_date($uid, $wall);
5103         if(! $dthen)
5104                 return array();
5105
5106         // Set the start and end date to the beginning of the month
5107         $dnow = substr($dnow,0,8).'01';
5108         $dthen = substr($dthen,0,8).'01';
5109
5110         $ret = array();
5111
5112         // Starting with the current month, get the first and last days of every
5113         // month down to and including the month of the first post
5114         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5115                 $dyear = intval(substr($dnow,0,4));
5116                 $dstart = substr($dnow,0,8) . '01';
5117                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5118                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5119                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5120                 $str = day_translate(datetime_convert('','',$dnow,'F'));
5121                 if(! $ret[$dyear])
5122                         $ret[$dyear] = array();
5123                 $ret[$dyear][] = array($str,$end_month,$start_month);
5124                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5125         }
5126         return $ret;
5127 }
5128
5129 function posted_dates($uid,$wall) {
5130         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5131
5132         $dthen = first_post_date($uid,$wall);
5133         if(! $dthen)
5134                 return array();
5135
5136         // Set the start and end date to the beginning of the month
5137         $dnow = substr($dnow,0,8).'01';
5138         $dthen = substr($dthen,0,8).'01';
5139
5140         $ret = array();
5141         // Starting with the current month, get the first and last days of every
5142         // month down to and including the month of the first post
5143         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5144                 $dstart = substr($dnow,0,8) . '01';
5145                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5146                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5147                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5148                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
5149                 $ret[] = array($str,$end_month,$start_month);
5150                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5151         }
5152         return $ret;
5153 }
5154
5155
5156 function posted_date_widget($url,$uid,$wall) {
5157         $o = '';
5158
5159         if(! feature_enabled($uid,'archives'))
5160                 return $o;
5161
5162         // For former Facebook folks that left because of "timeline"
5163
5164 /*      if($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
5165                 return $o;*/
5166
5167         $visible_years = get_pconfig($uid,'system','archive_visible_years');
5168         if(! $visible_years)
5169                 $visible_years = 5;
5170
5171         $ret = list_post_dates($uid,$wall);
5172
5173         if(! count($ret))
5174                 return $o;
5175
5176         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
5177         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
5178
5179         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
5180                 '$title' => t('Archives'),
5181                 '$size' => $visible_years,
5182                 '$cutoff_year' => $cutoff_year,
5183                 '$cutoff' => $cutoff,
5184                 '$url' => $url,
5185                 '$dates' => $ret,
5186                 '$showmore' => t('show more')
5187
5188         ));
5189         return $o;
5190 }
5191
5192 function store_diaspora_retract_sig($item, $user, $baseurl) {
5193         // Note that we can't add a target_author_signature
5194         // if the comment was deleted by a remote user. That should be ok, because if a remote user is deleting
5195         // the comment, that means we're the home of the post, and Diaspora will only
5196         // check the parent_author_signature of retractions that it doesn't have to relay further
5197         //
5198         // I don't think this function gets called for an "unlike," but I'll check anyway
5199
5200         $enabled = intval(get_config('system','diaspora_enabled'));
5201         if(! $enabled) {
5202                 logger('drop_item: diaspora support disabled, not storing retraction signature', LOGGER_DEBUG);
5203                 return;
5204         }
5205
5206         logger('drop_item: storing diaspora retraction signature');
5207
5208         $signed_text = $item['guid'] . ';' . ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
5209
5210         if(local_user() == $item['uid']) {
5211
5212                 $handle = $user['nickname'] . '@' . substr($baseurl, strpos($baseurl,'://') + 3);
5213                 $authorsig = base64_encode(rsa_sign($signed_text,$user['prvkey'],'sha256'));
5214         }
5215         else {
5216                 $r = q("SELECT `nick`, `url` FROM `contact` WHERE `id` = '%d' LIMIT 1",
5217                         $item['contact-id'] // If this function gets called, drop_item() has already checked remote_user() == $item['contact-id']
5218                 );
5219                 if(count($r)) {
5220                         // The below handle only works for NETWORK_DFRN. I think that's ok, because this function
5221                         // only handles DFRN deletes
5222                         $handle_baseurl_start = strpos($r['url'],'://') + 3;
5223                         $handle_baseurl_length = strpos($r['url'],'/profile') - $handle_baseurl_start;
5224                         $handle = $r['nick'] . '@' . substr($r['url'], $handle_baseurl_start, $handle_baseurl_length);
5225                         $authorsig = '';
5226                 }
5227         }
5228
5229         if(isset($handle))
5230                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
5231                         intval($item['id']),
5232                         dbesc($signed_text),
5233                         dbesc($authorsig),
5234                         dbesc($handle)
5235                 );
5236
5237         return;
5238 }