include/items.php

   1 <?php
   2
   3 require_once('include/bbcode.php');
   4 require_once('include/oembed.php');
   5 require_once('include/salmon.php');
   6 require_once('include/crypto.php');
   7 require_once('include/Photo.php');
   8 require_once('include/tags.php');
   9 require_once('include/files.php');
  10 require_once('include/text.php');
  11 require_once('include/email.php');
  12 require_once('include/threads.php');
  13 require_once('include/socgraph.php');
  14 require_once('include/plaintext.php');
  15 require_once('include/ostatus.php');
  16 require_once('include/feed.php');
  17 require_once('mod/share.php');
  18
  19 require_once('library/defuse/php-encryption-1.2.1/Crypto.php');
  20
  21
  22 function get_feed_for(&$a, $dfrn_id, $owner_nick, $last_update, $direction = 0, $forpubsub = false) {
  23
  24
  25         $sitefeed    = ((strlen($owner_nick)) ? false : true); // not yet implemented, need to rewrite huge chunks of following logic
  26         $public_feed = (($dfrn_id) ? false : true);
  27         $starred     = false;   // not yet implemented, possible security issues
  28         $converse    = false;
  29
  30         if($public_feed && $a->argc > 2) {
  31                 for($x = 2; $x < $a->argc; $x++) {
  32                         if($a->argv[$x] == 'converse')
  33                                 $converse = true;
  34                         if($a->argv[$x] == 'starred')
  35                                 $starred = true;
  36                         if($a->argv[$x] === 'category' && $a->argc > ($x + 1) && strlen($a->argv[$x+1]))
  37                                 $category = $a->argv[$x+1];
  38                 }
  39         }
  40
  41
  42
  43         // default permissions - anonymous user
  44
  45         $sql_extra = " AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = '' AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = '' ";
  46
  47         $r = q("SELECT `contact`.*, `user`.`uid` AS `user_uid`, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`
  48                 FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
  49                 WHERE `contact`.`self` = 1 AND `user`.`nickname` = '%s' LIMIT 1",
  50                 dbesc($owner_nick)
  51         );
  52
  53         if(! count($r))
  54                 killme();
  55
  56         $owner = $r[0];
  57         $owner_id = $owner['user_uid'];
  58         $owner_nick = $owner['nickname'];
  59
  60         $birthday = feed_birthday($owner_id,$owner['timezone']);
  61
  62         $sql_post_table = "";
  63         $visibility = "";
  64
  65         if(! $public_feed) {
  66
  67                 $sql_extra = '';
  68                 switch($direction) {
  69                         case (-1):
  70                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  71                                 $my_id = $dfrn_id;
  72                                 break;
  73                         case 0:
  74                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  75                                 $my_id = '1:' . $dfrn_id;
  76                                 break;
  77                         case 1:
  78                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  79                                 $my_id = '0:' . $dfrn_id;
  80                                 break;
  81                         default:
  82                                 return false;
  83                                 break; // NOTREACHED
  84                 }
  85
  86                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
  87                         intval($owner_id)
  88                 );
  89
  90                 if(! count($r))
  91                         killme();
  92
  93                 $contact = $r[0];
  94                 require_once('include/security.php');
  95                 $groups = init_groups_visitor($contact['id']);
  96
  97                 if(count($groups)) {
  98                         for($x = 0; $x < count($groups); $x ++)
  99                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
 100                         $gs = implode('|', $groups);
 101                 }
 102                 else
 103                         $gs = '<<>>' ; // Impossible to match
 104
 105                 $sql_extra = sprintf("
 106                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
 107                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
 108                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
 109                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
 110                 ",
 111                         intval($contact['id']),
 112                         intval($contact['id']),
 113                         dbesc($gs),
 114                         dbesc($gs)
 115                 );
 116         }
 117
 118         if($public_feed)
 119                 $sort = 'DESC';
 120         else
 121                 $sort = 'ASC';
 122
 123         // Include answers to status.net posts in pubsub feeds
 124         if($forpubsub) {
 125                 $sql_post_table = "INNER JOIN `thread` ON `thread`.`iid` = `item`.`parent`
 126                                 LEFT JOIN `item` AS `thritem` ON `thritem`.`uri`=`item`.`thr-parent` AND `thritem`.`uid`=`item`.`uid`";
 127                 $visibility = sprintf("AND (`item`.`parent` = `item`.`id`) OR (`item`.`network` = '%s' AND ((`thread`.`network`='%s') OR (`thritem`.`network` = '%s')))",
 128                                         dbesc(NETWORK_DFRN), dbesc(NETWORK_OSTATUS), dbesc(NETWORK_OSTATUS));
 129                 $date_field = "`received`";
 130                 $sql_order = "`item`.`received` DESC";
 131         } else {
 132                 $date_field = "`changed`";
 133                 $sql_order = "`item`.`parent` ".$sort.", `item`.`created` ASC";
 134         }
 135
 136         if(! strlen($last_update))
 137                 $last_update = 'now -30 days';
 138
 139         if(isset($category)) {
 140                 $sql_post_table = sprintf("INNER JOIN (SELECT `oid` FROM `term` WHERE `term` = '%s' AND `otype` = %d AND `type` = %d AND `uid` = %d ORDER BY `tid` DESC) AS `term` ON `item`.`id` = `term`.`oid` ",
 141                                 dbesc(protect_sprintf($category)), intval(TERM_OBJ_POST), intval(TERM_CATEGORY), intval($owner_id));
 142                 //$sql_extra .= file_tag_file_query('item',$category,'category');
 143         }
 144
 145         if($public_feed) {
 146                 if(! $converse)
 147                         $sql_extra .= " AND `contact`.`self` = 1 ";
 148         }
 149
 150         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
 151
 152         //      AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 153         //      dbesc($check_date),
 154
 155         $r = q("SELECT STRAIGHT_JOIN `item`.*, `item`.`id` AS `item_id`,
 156                 `contact`.`name`, `contact`.`network`, `contact`.`photo`, `contact`.`url`,
 157                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
 158                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
 159                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`,
 160                 `sign`.`signed_text`, `sign`.`signature`, `sign`.`signer`
 161                 FROM `item` $sql_post_table
 162                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 163                 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 164                 LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
 165                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1 and `item`.`moderated` = 0 AND `item`.`parent` != 0
 166                 AND ((`item`.`wall` = 1) $visibility) AND `item`.$date_field > '%s'
 167                 $sql_extra
 168                 ORDER BY $sql_order LIMIT 0, 300",
 169                 intval($owner_id),
 170                 dbesc($check_date),
 171                 dbesc($sort)
 172         );
 173
 174         // Will check further below if this actually returned results.
 175         // We will provide an empty feed if that is the case.
 176
 177         $items = $r;
 178
 179         $feed_template = get_markup_template(($dfrn_id) ? 'atom_feed_dfrn.tpl' : 'atom_feed.tpl');
 180
 181         $atom = '';
 182
 183         $hubxml = feed_hublinks();
 184
 185         $salmon = feed_salmonlinks($owner_nick);
 186
 187         $alternatelink = $owner['url'];
 188
 189         if(isset($category))
 190                 $alternatelink .= "/category/".$category;
 191
 192         $atom .= replace_macros($feed_template, array(
 193                 '$version'      => xmlify(FRIENDICA_VERSION),
 194                 '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 195                 '$feed_title'   => xmlify($owner['name']),
 196                 '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
 197                 '$hub'          => $hubxml,
 198                 '$salmon'       => $salmon,
 199                 '$alternatelink' => xmlify($alternatelink),
 200                 '$name'         => xmlify($owner['name']),
 201                 '$profile_page' => xmlify($owner['url']),
 202                 '$photo'        => xmlify($owner['photo']),
 203                 '$thumb'        => xmlify($owner['thumb']),
 204                 '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 205                 '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 206                 '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME)) ,
 207                 '$birthday'     => ((strlen($birthday)) ? '<dfrn:birthday>' . xmlify($birthday) . '</dfrn:birthday>' : ''),
 208                 '$community'    => (($owner['page-flags'] == PAGE_COMMUNITY) ? '<dfrn:community>1</dfrn:community>' : '')
 209         ));
 210
 211         call_hooks('atom_feed', $atom);
 212
 213         if(! count($items)) {
 214
 215                 call_hooks('atom_feed_end', $atom);
 216
 217                 $atom .= '</feed>' . "\r\n";
 218                 return $atom;
 219         }
 220
 221         foreach($items as $item) {
 222
 223                 // prevent private email from leaking.
 224                 if($item['network'] === NETWORK_MAIL)
 225                         continue;
 226
 227                 // public feeds get html, our own nodes use bbcode
 228
 229                 if($public_feed) {
 230                         $type = 'html';
 231                         // catch any email that's in a public conversation and make sure it doesn't leak
 232                         if($item['private'])
 233                                 continue;
 234                 }
 235                 else {
 236                         $type = 'text';
 237                 }
 238
 239                 $atom .= atom_entry($item,$type,null,$owner,true);
 240         }
 241
 242         call_hooks('atom_feed_end', $atom);
 243
 244         $atom .= '</feed>' . "\r\n";
 245
 246         return $atom;
 247 }
 248
 249
 250 function construct_verb($item) {
 251         if($item['verb'])
 252                 return $item['verb'];
 253         return ACTIVITY_POST;
 254 }
 255
 256 function construct_activity_object($item) {
 257
 258         if($item['object']) {
 259                 $o = '<as:object>' . "\r\n";
 260                 $r = parse_xml_string($item['object'],false);
 261
 262
 263                 if(! $r)
 264                         return '';
 265                 if($r->type)
 266                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 267                 if($r->id)
 268                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 269                 if($r->title)
 270                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 271                 if($r->link) {
 272                         if(substr($r->link,0,1) === '<') {
 273                                 // patch up some facebook "like" activity objects that got stored incorrectly
 274                                 // for a couple of months prior to 9-Jun-2011 and generated bad XML.
 275                                 // we can probably remove this hack here and in the following function in a few months time.
 276                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 277                                         $r->link = str_replace('&','&amp;', $r->link);
 278                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 279                                 $o .= $r->link;
 280                         }
 281                         else
 282                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 283                 }
 284                 if($r->content)
 285                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 286                 $o .= '</as:object>' . "\r\n";
 287                 return $o;
 288         }
 289
 290         return '';
 291 }
 292
 293 function construct_activity_target($item) {
 294
 295         if($item['target']) {
 296                 $o = '<as:target>' . "\r\n";
 297                 $r = parse_xml_string($item['target'],false);
 298                 if(! $r)
 299                         return '';
 300                 if($r->type)
 301                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 302                 if($r->id)
 303                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 304                 if($r->title)
 305                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 306                 if($r->link) {
 307                         if(substr($r->link,0,1) === '<') {
 308                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 309                                         $r->link = str_replace('&','&amp;', $r->link);
 310                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 311                                 $o .= $r->link;
 312                         }
 313                         else
 314                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 315                 }
 316                 if($r->content)
 317                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 318                 $o .= '</as:target>' . "\r\n";
 319                 return $o;
 320         }
 321
 322         return '';
 323 }
 324
 325 /* limit_body_size()
 326  *
 327  *              The purpose of this function is to apply system message length limits to
 328  *              imported messages without including any embedded photos in the length
 329  */
 330 if(! function_exists('limit_body_size')) {
 331 function limit_body_size($body) {
 332
 333 //      logger('limit_body_size: start', LOGGER_DEBUG);
 334
 335         $maxlen = get_max_import_size();
 336
 337         // If the length of the body, including the embedded images, is smaller
 338         // than the maximum, then don't waste time looking for the images
 339         if($maxlen && (strlen($body) > $maxlen)) {
 340
 341                 logger('limit_body_size: the total body length exceeds the limit', LOGGER_DEBUG);
 342
 343                 $orig_body = $body;
 344                 $new_body = '';
 345                 $textlen = 0;
 346                 $max_found = false;
 347
 348                 $img_start = strpos($orig_body, '[img');
 349                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 350                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 351                 while(($img_st_close !== false) && ($img_end !== false)) {
 352
 353                         $img_st_close++; // make it point to AFTER the closing bracket
 354                         $img_end += $img_start;
 355                         $img_end += strlen('[/img]');
 356
 357                         if(! strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
 358                                 // This is an embedded image
 359
 360                                 if( ($textlen + $img_start) > $maxlen ) {
 361                                         if($textlen < $maxlen) {
 362                                                 logger('limit_body_size: the limit happens before an embedded image', LOGGER_DEBUG);
 363                                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 364                                                 $textlen = $maxlen;
 365                                         }
 366                                 }
 367                                 else {
 368                                         $new_body = $new_body . substr($orig_body, 0, $img_start);
 369                                         $textlen += $img_start;
 370                                 }
 371
 372                                 $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
 373                         }
 374                         else {
 375
 376                                 if( ($textlen + $img_end) > $maxlen ) {
 377                                         if($textlen < $maxlen) {
 378                                                 logger('limit_body_size: the limit happens before the end of a non-embedded image', LOGGER_DEBUG);
 379                                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 380                                                 $textlen = $maxlen;
 381                                         }
 382                                 }
 383                                 else {
 384                                         $new_body = $new_body . substr($orig_body, 0, $img_end);
 385                                         $textlen += $img_end;
 386                                 }
 387                         }
 388                         $orig_body = substr($orig_body, $img_end);
 389
 390                         if($orig_body === false) // in case the body ends on a closing image tag
 391                                 $orig_body = '';
 392
 393                         $img_start = strpos($orig_body, '[img');
 394                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 395                         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 396                 }
 397
 398                 if( ($textlen + strlen($orig_body)) > $maxlen) {
 399                         if($textlen < $maxlen) {
 400                                 logger('limit_body_size: the limit happens after the end of the last image', LOGGER_DEBUG);
 401                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 402                                 $textlen = $maxlen;
 403                         }
 404                 }
 405                 else {
 406                         logger('limit_body_size: the text size with embedded images extracted did not violate the limit', LOGGER_DEBUG);
 407                         $new_body = $new_body . $orig_body;
 408                         $textlen += strlen($orig_body);
 409                 }
 410
 411                 return $new_body;
 412         }
 413         else
 414                 return $body;
 415 }}
 416
 417 function title_is_body($title, $body) {
 418
 419         $title = strip_tags($title);
 420         $title = trim($title);
 421         $title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
 422         $title = str_replace(array("\n", "\r", "\t", " "), array("","","",""), $title);
 423
 424         $body = strip_tags($body);
 425         $body = trim($body);
 426         $body = html_entity_decode($body, ENT_QUOTES, 'UTF-8');
 427         $body = str_replace(array("\n", "\r", "\t", " "), array("","","",""), $body);
 428
 429         if (strlen($title) < strlen($body))
 430                 $body = substr($body, 0, strlen($title));
 431
 432         if (($title != $body) and (substr($title, -3) == "...")) {
 433                 $pos = strrpos($title, "...");
 434                 if ($pos > 0) {
 435                         $title = substr($title, 0, $pos);
 436                         $body = substr($body, 0, $pos);
 437                 }
 438         }
 439
 440         return($title == $body);
 441 }
 442
 443
 444
 445 function get_atom_elements($feed, $item, $contact = array()) {
 446
 447         require_once('library/HTMLPurifier.auto.php');
 448         require_once('include/html2bbcode.php');
 449
 450         $best_photo = array();
 451
 452         $res = array();
 453
 454         $author = $item->get_author();
 455         if($author) {
 456                 $res['author-name'] = unxmlify($author->get_name());
 457                 $res['author-link'] = unxmlify($author->get_link());
 458         }
 459         else {
 460                 $res['author-name'] = unxmlify($feed->get_title());
 461                 $res['author-link'] = unxmlify($feed->get_permalink());
 462         }
 463         $res['uri'] = unxmlify($item->get_id());
 464         $res['title'] = unxmlify($item->get_title());
 465         $res['body'] = unxmlify($item->get_content());
 466         $res['plink'] = unxmlify($item->get_link(0));
 467
 468         if (isset($contact["network"]) AND ($contact["network"] == NETWORK_FEED) AND strstr($res['plink'], ".app.net/")) {
 469                 logger("get_atom_elements: detected app.net posting: ".print_r($res, true), LOGGER_DEBUG);
 470                 $res['title'] = "";
 471                 $res['body'] = nl2br($res['body']);
 472         }
 473
 474         // removing the content of the title if its identically to the body
 475         // This helps with auto generated titles e.g. from tumblr
 476         if (title_is_body($res["title"], $res["body"]))
 477                 $res['title'] = "";
 478
 479         if($res['plink'])
 480                 $base_url = implode('/', array_slice(explode('/',$res['plink']),0,3));
 481         else
 482                 $base_url = '';
 483
 484         // look for a photo. We should check media size and find the best one,
 485         // but for now let's just find any author photo
 486         // Additionally we look for an alternate author link. On OStatus this one is the one we want.
 487
 488         $authorlinks = $item->feed->data["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["feed"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["author"][0]["child"]["http://www.w3.org/2005/Atom"]["link"];
 489         if (is_array($authorlinks)) {
 490                 foreach ($authorlinks as $link) {
 491                         $linkdata = array_shift($link["attribs"]);
 492
 493                         if ($linkdata["rel"] == "alternate")
 494                                 $res["author-link"] = $linkdata["href"];
 495                 };
 496         }
 497
 498         $rawauthor = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 499
 500         if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 501                 $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 502                 foreach($base as $link) {
 503                         if($link['attribs']['']['rel'] === 'alternate')
 504                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 505
 506                         if(!x($res, 'author-avatar') || !$res['author-avatar']) {
 507                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 508                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 509                         }
 510                 }
 511         }
 512
 513         $rawactor = $item->get_item_tags(NAMESPACE_ACTIVITY, 'actor');
 514
 515         if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 516                 $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 517                 if($base && count($base)) {
 518                         foreach($base as $link) {
 519                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 520                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 521                                 if(!x($res, 'author-avatar') || !$res['author-avatar']) {
 522                                         if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 523                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 524                                 }
 525                         }
 526                 }
 527         }
 528
 529         // No photo/profile-link on the item - look at the feed level
 530
 531         if((! (x($res,'author-link'))) || (! (x($res,'author-avatar')))) {
 532                 $rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 533                 if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 534                         $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 535                         foreach($base as $link) {
 536                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 537                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 538                                 if(! $res['author-avatar']) {
 539                                         if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 540                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 541                                 }
 542                         }
 543                 }
 544
 545                 $rawactor = $feed->get_feed_tags(NAMESPACE_ACTIVITY, 'subject');
 546
 547                 if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 548                         $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 549
 550                         if($base && count($base)) {
 551                                 foreach($base as $link) {
 552                                         if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 553                                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 554                                         if(! (x($res,'author-avatar'))) {
 555                                                 if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 556                                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 557                                         }
 558                                 }
 559                         }
 560                 }
 561         }
 562
 563         $apps = $item->get_item_tags(NAMESPACE_STATUSNET,'notice_info');
 564         if($apps && $apps[0]['attribs']['']['source']) {
 565                 $res['app'] = strip_tags(unxmlify($apps[0]['attribs']['']['source']));
 566                 if($res['app'] === 'web')
 567                         $res['app'] = 'OStatus';
 568         }
 569
 570         // base64 encoded json structure representing Diaspora signature
 571
 572         $dsig = $item->get_item_tags(NAMESPACE_DFRN,'diaspora_signature');
 573         if($dsig) {
 574                 $res['dsprsig'] = unxmlify($dsig[0]['data']);
 575         }
 576
 577         $dguid = $item->get_item_tags(NAMESPACE_DFRN,'diaspora_guid');
 578         if($dguid)
 579                 $res['guid'] = unxmlify($dguid[0]['data']);
 580
 581         $bm = $item->get_item_tags(NAMESPACE_DFRN,'bookmark');
 582         if($bm)
 583                 $res['bookmark'] = ((unxmlify($bm[0]['data']) === 'true') ? 1 : 0);
 584
 585
 586         /**
 587          * If there's a copy of the body content which is guaranteed to have survived mangling in transit, use it.
 588          */
 589
 590         $have_real_body = false;
 591
 592         $rawenv = $item->get_item_tags(NAMESPACE_DFRN, 'env');
 593         if($rawenv) {
 594                 $have_real_body = true;
 595                 $res['body'] = $rawenv[0]['data'];
 596                 $res['body'] = str_replace(array(' ',"\t","\r","\n"), array('','','',''),$res['body']);
 597                 // make sure nobody is trying to sneak some html tags by us
 598                 $res['body'] = notags(base64url_decode($res['body']));
 599         }
 600
 601
 602         $res['body'] = limit_body_size($res['body']);
 603
 604         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 605         // the content type. Our own network only emits text normally, though it might have been converted to
 606         // html if we used a pubsubhubbub transport. But if we see even one html tag in our text, we will
 607         // have to assume it is all html and needs to be purified.
 608
 609         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 610         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 611         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 612         // html.
 613
 614         if((strpos($res['body'],'<') !== false) && (strpos($res['body'],'>') !== false)) {
 615
 616                 $res['body'] = reltoabs($res['body'],$base_url);
 617
 618                 $res['body'] = html2bb_video($res['body']);
 619
 620                 $res['body'] = oembed_html2bbcode($res['body']);
 621
 622                 $config = HTMLPurifier_Config::createDefault();
 623                 $config->set('Cache.DefinitionImpl', null);
 624
 625                 // we shouldn't need a whitelist, because the bbcode converter
 626                 // will strip out any unsupported tags.
 627
 628                 $purifier = new HTMLPurifier($config);
 629                 $res['body'] = $purifier->purify($res['body']);
 630
 631                 $res['body'] = @html2bbcode($res['body']);
 632
 633
 634         }
 635         elseif(! $have_real_body) {
 636
 637                 // it's not one of our messages and it has no tags
 638                 // so it's probably just text. We'll escape it just to be safe.
 639
 640                 $res['body'] = escape_tags($res['body']);
 641         }
 642
 643
 644         // this tag is obsolete but we keep it for really old sites
 645
 646         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 647         if($allow && $allow[0]['data'] == 1)
 648                 $res['last-child'] = 1;
 649         else
 650                 $res['last-child'] = 0;
 651
 652         $private = $item->get_item_tags(NAMESPACE_DFRN,'private');
 653         if($private && intval($private[0]['data']) > 0)
 654                 $res['private'] = intval($private[0]['data']);
 655         else
 656                 $res['private'] = 0;
 657
 658         $extid = $item->get_item_tags(NAMESPACE_DFRN,'extid');
 659         if($extid && $extid[0]['data'])
 660                 $res['extid'] = $extid[0]['data'];
 661
 662         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 663         if($rawlocation)
 664                 $res['location'] = unxmlify($rawlocation[0]['data']);
 665
 666
 667         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 668         if($rawcreated)
 669                 $res['created'] = unxmlify($rawcreated[0]['data']);
 670
 671
 672         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 673         if($rawedited)
 674                 $res['edited'] = unxmlify($rawedited[0]['data']);
 675
 676         if((x($res,'edited')) && (! (x($res,'created'))))
 677                 $res['created'] = $res['edited'];
 678
 679         if(! $res['created'])
 680                 $res['created'] = $item->get_date('c');
 681
 682         if(! $res['edited'])
 683                 $res['edited'] = $item->get_date('c');
 684
 685
 686         // Disallow time travelling posts
 687
 688         $d1 = strtotime($res['created']);
 689         $d2 = strtotime($res['edited']);
 690         $d3 = strtotime('now');
 691
 692         if($d1 > $d3)
 693                 $res['created'] = datetime_convert();
 694         if($d2 > $d3)
 695                 $res['edited'] = datetime_convert();
 696
 697         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 698         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 699                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 700         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 701                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 702         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 703                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 704         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 705                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 706
 707         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 708                 $base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 709
 710                 foreach($base as $link) {
 711                         if(!x($res, 'owner-avatar') || !$res['owner-avatar']) {
 712                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 713                                         $res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
 714                         }
 715                 }
 716         }
 717
 718         $rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
 719         if($rawgeo)
 720                 $res['coord'] = unxmlify($rawgeo[0]['data']);
 721
 722         if ($contact["network"] == NETWORK_FEED) {
 723                 $res['verb'] = ACTIVITY_POST;
 724                 $res['object-type'] = ACTIVITY_OBJ_NOTE;
 725         }
 726
 727         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 728
 729         // select between supported verbs
 730
 731         if($rawverb) {
 732                 $res['verb'] = unxmlify($rawverb[0]['data']);
 733         }
 734
 735         // translate OStatus unfollow to activity streams if it happened to get selected
 736
 737         if((x($res,'verb')) && ($res['verb'] === 'http://ostatus.org/schema/1.0/unfollow'))
 738                 $res['verb'] = ACTIVITY_UNFOLLOW;
 739
 740         $cats = $item->get_categories();
 741         if($cats) {
 742                 $tag_arr = array();
 743                 foreach($cats as $cat) {
 744                         $term = $cat->get_term();
 745                         if(! $term)
 746                                 $term = $cat->get_label();
 747                         $scheme = $cat->get_scheme();
 748                         if($scheme && $term && stristr($scheme,'X-DFRN:'))
 749                                 $tag_arr[] = substr($scheme,7,1) . '[url=' . unxmlify(substr($scheme,9)) . ']' . unxmlify($term) . '[/url]';
 750                         elseif($term)
 751                                 $tag_arr[] = notags(trim($term));
 752                 }
 753                 $res['tag'] =  implode(',', $tag_arr);
 754         }
 755
 756         $attach = $item->get_enclosures();
 757         if($attach) {
 758                 $att_arr = array();
 759                 foreach($attach as $att) {
 760                         $len   = intval($att->get_length());
 761                         $link  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_link()))));
 762                         $title = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_title()))));
 763                         $type  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_type()))));
 764                         if(strpos($type,';'))
 765                                 $type = substr($type,0,strpos($type,';'));
 766                         if((! $link) || (strpos($link,'http') !== 0))
 767                                 continue;
 768
 769                         if(! $title)
 770                                 $title = ' ';
 771                         if(! $type)
 772                                 $type = 'application/octet-stream';
 773
 774                         $att_arr[] = '[attach]href="' . $link . '" length="' . $len . '" type="' . $type . '" title="' . $title . '"[/attach]';
 775                 }
 776                 $res['attach'] = implode(',', $att_arr);
 777         }
 778
 779         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 780
 781         if($rawobj) {
 782                 $res['object'] = '<object>' . "\n";
 783                 $child = $rawobj[0]['child'];
 784                 if($child[NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 785                         $res['object-type'] = $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 786                         $res['object'] .= '<type>' . $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 787                 }
 788                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'id') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 789                         $res['object'] .= '<id>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 790                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'link') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 791                         $res['object'] .= '<link>' . encode_rel_links($child[SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 792                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'title') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 793                         $res['object'] .= '<title>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 794                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'content') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 795                         $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 796                         if(! $body)
 797                                 $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 798                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 799                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 800                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 801
 802                                 $body = html2bb_video($body);
 803
 804                                 $config = HTMLPurifier_Config::createDefault();
 805                                 $config->set('Cache.DefinitionImpl', null);
 806
 807                                 $purifier = new HTMLPurifier($config);
 808                                 $body = $purifier->purify($body);
 809                                 $body = html2bbcode($body);
 810                         }
 811
 812                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 813                 }
 814
 815                 $res['object'] .= '</object>' . "\n";
 816         }
 817
 818         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'target');
 819
 820         if($rawobj) {
 821                 $res['target'] = '<target>' . "\n";
 822                 $child = $rawobj[0]['child'];
 823                 if($child[NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 824                         $res['target'] .= '<type>' . $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 825                 }
 826                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'id') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 827                         $res['target'] .= '<id>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 828                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'link') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 829                         $res['target'] .= '<link>' . encode_rel_links($child[SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 830                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'data') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 831                         $res['target'] .= '<title>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 832                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'data') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 833                         $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 834                         if(! $body)
 835                                 $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 836                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 837                         $res['target'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 838                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 839
 840                                 $body = html2bb_video($body);
 841
 842                                 $config = HTMLPurifier_Config::createDefault();
 843                                 $config->set('Cache.DefinitionImpl', null);
 844
 845                                 $purifier = new HTMLPurifier($config);
 846                                 $body = $purifier->purify($body);
 847                                 $body = html2bbcode($body);
 848                         }
 849
 850                         $res['target'] .= '<content>' . $body . '</content>' . "\n";
 851                 }
 852
 853                 $res['target'] .= '</target>' . "\n";
 854         }
 855
 856         // This is some experimental stuff. By now retweets are shown with "RT:"
 857         // But: There is data so that the message could be shown similar to native retweets
 858         // There is some better way to parse this array - but it didn't worked for me.
 859         $child = $item->feed->data["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["feed"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["entry"][0]["child"]["http://activitystrea.ms/spec/1.0/"][object][0]["child"];
 860         if (is_array($child)) {
 861                 logger('get_atom_elements: Looking for status.net repeated message');
 862
 863                 $message = $child["http://activitystrea.ms/spec/1.0/"]["object"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["content"][0]["data"];
 864                 $orig_id = ostatus_convert_href($child["http://activitystrea.ms/spec/1.0/"]["object"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10]["id"][0]["data"]);
 865                 $author = $child[SIMPLEPIE_NAMESPACE_ATOM_10]["author"][0]["child"][SIMPLEPIE_NAMESPACE_ATOM_10];
 866                 $uri = $author["uri"][0]["data"];
 867                 $name = $author["name"][0]["data"];
 868                 $avatar = @array_shift($author["link"][2]["attribs"]);
 869                 $avatar = $avatar["href"];
 870
 871                 if (($name != "") and ($uri != "") and ($avatar != "") and ($message != "")) {
 872                         logger('get_atom_elements: fixing sender of repeated message. '.$orig_id, LOGGER_DEBUG);
 873
 874                         if (!intval(get_config('system','wall-to-wall_share'))) {
 875                                 $prefix = share_header($name, $uri, $avatar, "", "", $orig_link);
 876
 877                                 $res["body"] = $prefix.html2bbcode($message)."[/share]";
 878                         } else {
 879                                 $res["owner-name"] = $res["author-name"];
 880                                 $res["owner-link"] = $res["author-link"];
 881                                 $res["owner-avatar"] = $res["author-avatar"];
 882
 883                                 $res["author-name"] = $name;
 884                                 $res["author-link"] = $uri;
 885                                 $res["author-avatar"] = $avatar;
 886
 887                                 $res["body"] = html2bbcode($message);
 888                         }
 889                 }
 890         }
 891
 892         if (isset($contact["network"]) AND ($contact["network"] == NETWORK_FEED) AND $contact['fetch_further_information']) {
 893                 $preview = "";
 894
 895                 // Handle enclosures and treat them as preview picture
 896                 if (isset($attach))
 897                         foreach ($attach AS $attachment)
 898                                 if ($attachment->type == "image/jpeg")
 899                                         $preview = $attachment->link;
 900
 901                 $res["body"] = $res["title"].add_page_info($res['plink'], false, $preview, ($contact['fetch_further_information'] == 2), $contact['ffi_keyword_blacklist']);
 902                 $res["tag"] = add_page_keywords($res['plink'], false, $preview, ($contact['fetch_further_information'] == 2), $contact['ffi_keyword_blacklist']);
 903                 $res["title"] = "";
 904                 $res["object-type"] = ACTIVITY_OBJ_BOOKMARK;
 905                 unset($res["attach"]);
 906         } elseif (isset($contact["network"]) AND ($contact["network"] == NETWORK_OSTATUS))
 907                 $res["body"] = add_page_info_to_body($res["body"]);
 908         elseif (isset($contact["network"]) AND ($contact["network"] == NETWORK_FEED) AND strstr($res['plink'], ".app.net/")) {
 909                 $res["body"] = add_page_info_to_body($res["body"]);
 910         }
 911
 912         $arr = array('feed' => $feed, 'item' => $item, 'result' => $res);
 913
 914         call_hooks('parse_atom', $arr);
 915
 916         return $res;
 917 }
 918
 919 function add_page_info_data($data) {
 920         call_hooks('page_info_data', $data);
 921
 922         // It maybe is a rich content, but if it does have everything that a link has,
 923         // then treat it that way
 924         if (($data["type"] == "rich") AND is_string($data["title"]) AND
 925                 is_string($data["text"]) AND (sizeof($data["images"]) > 0))
 926                 $data["type"] = "link";
 927
 928         if ((($data["type"] != "link") AND ($data["type"] != "video") AND ($data["type"] != "photo")) OR ($data["title"] == $url))
 929                 return("");
 930
 931         if ($no_photos AND ($data["type"] == "photo"))
 932                 return("");
 933
 934         // If the link contains BBCode stuff, make a short link out of this to avoid parsing problems
 935         if (strpos($data["url"], '[') OR strpos($data["url"], ']')) {
 936                 require_once("include/network.php");
 937                 $data["url"] = short_link($data["url"]);
 938         }
 939
 940         if (($data["type"] != "photo") AND is_string($data["title"]))
 941                 $text .= "[bookmark=".$data["url"]."]".trim($data["title"])."[/bookmark]";
 942
 943         if (($data["type"] != "video") AND ($photo != ""))
 944                 $text .= '[img]'.$photo.'[/img]';
 945         elseif (($data["type"] != "video") AND (sizeof($data["images"]) > 0)) {
 946                 $imagedata = $data["images"][0];
 947                 $text .= '[img]'.$imagedata["src"].'[/img]';
 948         }
 949
 950         if (($data["type"] != "photo") AND is_string($data["text"]))
 951                 $text .= "[quote]".$data["text"]."[/quote]";
 952
 953         $hashtags = "";
 954         if (isset($data["keywords"]) AND count($data["keywords"])) {
 955                 $a = get_app();
 956                 $hashtags = "\n";
 957                 foreach ($data["keywords"] AS $keyword) {
 958                         $hashtag = str_replace(array(" ", "+", "/", ".", "#", "'"),
 959                                                 array("","", "", "", "", ""), $keyword);
 960                         $hashtags .= "#[url=".$a->get_baseurl()."/search?tag=".rawurlencode($hashtag)."]".$hashtag."[/url] ";
 961                 }
 962         }
 963
 964         return("\n[class=type-".$data["type"]."]".$text."[/class]".$hashtags);
 965 }
 966
 967 function query_page_info($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
 968         require_once("mod/parse_url.php");
 969
 970         $data = Cache::get("parse_url:".$url);
 971         if (is_null($data)){
 972                 $data = parseurl_getsiteinfo($url, true);
 973                 Cache::set("parse_url:".$url,serialize($data), CACHE_DAY);
 974         } else
 975                 $data = unserialize($data);
 976
 977         if ($photo != "")
 978                 $data["images"][0]["src"] = $photo;
 979
 980         logger('fetch page info for '.$url.' '.print_r($data, true), LOGGER_DEBUG);
 981
 982         if (!$keywords AND isset($data["keywords"]))
 983                 unset($data["keywords"]);
 984
 985         if (($keyword_blacklist != "") AND isset($data["keywords"])) {
 986                 $list = explode(",", $keyword_blacklist);
 987                 foreach ($list AS $keyword) {
 988                         $keyword = trim($keyword);
 989                         $index = array_search($keyword, $data["keywords"]);
 990                         if ($index !== false)
 991                                 unset($data["keywords"][$index]);
 992                 }
 993         }
 994
 995         return($data);
 996 }
 997
 998 function add_page_keywords($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
 999         $data = query_page_info($url, $no_photos, $photo, $keywords, $keyword_blacklist);
1000
1001         $tags = "";
1002         if (isset($data["keywords"]) AND count($data["keywords"])) {
1003                 $a = get_app();
1004                 foreach ($data["keywords"] AS $keyword) {
1005                         $hashtag = str_replace(array(" ", "+", "/", ".", "#", "'"),
1006                                                 array("","", "", "", "", ""), $keyword);
1007
1008                         if ($tags != "")
1009                                 $tags .= ",";
1010
1011                         $tags .= "#[url=".$a->get_baseurl()."/search?tag=".rawurlencode($hashtag)."]".$hashtag."[/url]";
1012                 }
1013         }
1014
1015         return($tags);
1016 }
1017
1018 function add_page_info($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
1019         $data = query_page_info($url, $no_photos, $photo, $keywords, $keyword_blacklist);
1020
1021         $text = add_page_info_data($data);
1022
1023         return($text);
1024 }
1025
1026 function add_page_info_to_body($body, $texturl = false, $no_photos = false) {
1027
1028         logger('add_page_info_to_body: fetch page info for body '.$body, LOGGER_DEBUG);
1029
1030         $URLSearchString = "^\[\]";
1031
1032         // Adding these spaces is a quick hack due to my problems with regular expressions :)
1033         preg_match("/[^!#@]\[url\]([$URLSearchString]*)\[\/url\]/ism", " ".$body, $matches);
1034
1035         if (!$matches)
1036                 preg_match("/[^!#@]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", " ".$body, $matches);
1037
1038         // Convert urls without bbcode elements
1039         if (!$matches AND $texturl) {
1040                 preg_match("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", " ".$body, $matches);
1041
1042                 // Yeah, a hack. I really hate regular expressions :)
1043                 if ($matches)
1044                         $matches[1] = $matches[2];
1045         }
1046
1047         if ($matches)
1048                 $footer = add_page_info($matches[1], $no_photos);
1049
1050         // Remove the link from the body if the link is attached at the end of the post
1051         if (isset($footer) AND (trim($footer) != "") AND (strpos($footer, $matches[1]))) {
1052                 $removedlink = trim(str_replace($matches[1], "", $body));
1053                 if (($removedlink == "") OR strstr($body, $removedlink))
1054                         $body = $removedlink;
1055
1056                 $url = str_replace(array('/', '.'), array('\/', '\.'), $matches[1]);
1057                 $removedlink = preg_replace("/\[url\=".$url."\](.*?)\[\/url\]/ism", '', $body);
1058                 if (($removedlink == "") OR strstr($body, $removedlink))
1059                         $body = $removedlink;
1060         }
1061
1062         // Add the page information to the bottom
1063         if (isset($footer) AND (trim($footer) != ""))
1064                 $body .= $footer;
1065
1066         return $body;
1067 }
1068
1069 function encode_rel_links($links) {
1070         $o = '';
1071         if(! ((is_array($links)) && (count($links))))
1072                 return $o;
1073         foreach($links as $link) {
1074                 $o .= '<link ';
1075                 if($link['attribs']['']['rel'])
1076                         $o .= 'rel="' . $link['attribs']['']['rel'] . '" ';
1077                 if($link['attribs']['']['type'])
1078                         $o .= 'type="' . $link['attribs']['']['type'] . '" ';
1079                 if($link['attribs']['']['href'])
1080                         $o .= 'href="' . $link['attribs']['']['href'] . '" ';
1081                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['width'])
1082                         $o .= 'media:width="' . $link['attribs'][NAMESPACE_MEDIA]['width'] . '" ';
1083                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['height'])
1084                         $o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
1085                 $o .= ' />' . "\n" ;
1086         }
1087         return xmlify($o);
1088 }
1089
1090 function add_guid($item) {
1091         $r = q("SELECT `guid` FROM `guid` WHERE `guid` = '%s' LIMIT 1", dbesc($item["guid"]));
1092         if ($r)
1093                 return;
1094
1095         q("INSERT INTO `guid` (`guid`,`plink`,`uri`,`network`) VALUES ('%s','%s','%s','%s')",
1096                 dbesc($item["guid"]), dbesc($item["plink"]),
1097                 dbesc($item["uri"]), dbesc($item["network"]));
1098 }
1099
1100 // Adds a "lang" specification in a "postopts" element of given $arr,
1101 // if possible and not already present.
1102 // Expects "body" element to exist in $arr.
1103 // TODO: add a parameter to request forcing override
1104 function item_add_language_opt(&$arr) {
1105
1106         if (version_compare(PHP_VERSION, '5.3.0', '<')) return; // LanguageDetect.php not available ?
1107
1108         if ( x($arr, 'postopts') )
1109         {
1110                 if ( strstr($arr['postopts'], 'lang=') )
1111                 {
1112                         // do not override
1113                         // TODO: add parameter to request overriding
1114                         return;
1115                 }
1116                 $postopts = $arr['postopts'];
1117         }
1118         else
1119         {
1120                 $postopts = "";
1121         }
1122
1123         require_once('library/langdet/Text/LanguageDetect.php');
1124         $naked_body = preg_replace('/\[(.+?)\]/','',$arr['body']);
1125         $l = new Text_LanguageDetect;
1126         //$lng = $l->detectConfidence($naked_body);
1127         //$arr['postopts'] = (($lng['language']) ? 'lang=' . $lng['language'] . ';' . $lng['confidence'] : '');
1128         $lng = $l->detect($naked_body, 3);
1129
1130         if (sizeof($lng) > 0) {
1131                 if ($postopts != "") $postopts .= '&'; // arbitrary separator, to be reviewed
1132                 $postopts .= 'lang=';
1133                 $sep = "";
1134                 foreach ($lng as $language => $score) {
1135                         $postopts .= $sep . $language.";".$score;
1136                         $sep = ':';
1137                 }
1138                 $arr['postopts'] = $postopts;
1139         }
1140 }
1141
1142 function item_store($arr,$force_parent = false, $notify = false, $dontcache = false) {
1143
1144         // If it is a posting where users should get notifications, then define it as wall posting
1145         if ($notify) {
1146                 $arr['wall'] = 1;
1147                 $arr['type'] = 'wall';
1148                 $arr['origin'] = 1;
1149                 $arr['last-child'] = 1;
1150                 $arr['network'] = NETWORK_DFRN;
1151         }
1152
1153         // If a Diaspora signature structure was passed in, pull it out of the
1154         // item array and set it aside for later storage.
1155
1156         $dsprsig = null;
1157         if(x($arr,'dsprsig')) {
1158                 $dsprsig = json_decode(base64_decode($arr['dsprsig']));
1159                 unset($arr['dsprsig']);
1160         }
1161
1162         // Converting the plink
1163         if ($arr['network'] == NETWORK_OSTATUS) {
1164                 if (isset($arr['plink']))
1165                         $arr['plink'] = ostatus_convert_href($arr['plink']);
1166                 elseif (isset($arr['uri']))
1167                         $arr['plink'] = ostatus_convert_href($arr['uri']);
1168         }
1169
1170         if(x($arr, 'gravity'))
1171                 $arr['gravity'] = intval($arr['gravity']);
1172         elseif($arr['parent-uri'] === $arr['uri'])
1173                 $arr['gravity'] = 0;
1174         elseif(activity_match($arr['verb'],ACTIVITY_POST))
1175                 $arr['gravity'] = 6;
1176         else
1177                 $arr['gravity'] = 6;   // extensible catchall
1178
1179         if(! x($arr,'type'))
1180                 $arr['type']      = 'remote';
1181
1182
1183
1184         /* check for create  date and expire time */
1185         $uid = intval($arr['uid']);
1186         $r = q("SELECT expire FROM user WHERE uid = %d", intval($uid));
1187         if(count($r)) {
1188                 $expire_interval = $r[0]['expire'];
1189                 if ($expire_interval>0) {
1190                         $expire_date =  new DateTime( '- '.$expire_interval.' days', new DateTimeZone('UTC'));
1191                         $created_date = new DateTime($arr['created'], new DateTimeZone('UTC'));
1192                         if ($created_date < $expire_date) {
1193                                 logger('item-store: item created ('.$arr['created'].') before expiration time ('.$expire_date->format(DateTime::W3C).'). ignored. ' . print_r($arr,true), LOGGER_DEBUG);
1194                                 return 0;
1195                         }
1196                 }
1197         }
1198
1199         // If there is no guid then take the same guid that was taken before for the same uri
1200         if ((trim($arr['guid']) == "") AND (trim($arr['uri']) != "") AND (trim($arr['network']) != "")) {
1201                 logger('item_store: checking for an existing guid for uri '.$arr['uri'], LOGGER_DEBUG);
1202                 $r = q("SELECT `guid` FROM `guid` WHERE `uri` = '%s' AND `network` = '%s' LIMIT 1",
1203                         dbesc(trim($arr['uri'])), dbesc(trim($arr['network'])));
1204
1205                 if(count($r)) {
1206                         $arr['guid'] = $r[0]["guid"];
1207                         logger('item_store: found guid '.$arr['guid'].' for uri '.$arr['uri'], LOGGER_DEBUG);
1208                 }
1209         }
1210
1211         // If there is no guid then take the same guid that was taken before for the same plink
1212         if ((trim($arr['guid']) == "") AND (trim($arr['plink']) != "") AND (trim($arr['network']) != "")) {
1213                 logger('item_store: checking for an existing guid for plink '.$arr['plink'], LOGGER_DEBUG);
1214                 $r = q("SELECT `guid`, `uri` FROM `guid` WHERE `plink` = '%s' AND `network` = '%s' LIMIT 1",
1215                         dbesc(trim($arr['plink'])), dbesc(trim($arr['network'])));
1216
1217                 if(count($r)) {
1218                         $arr['guid'] = $r[0]["guid"];
1219                         logger('item_store: found guid '.$arr['guid'].' for plink '.$arr['plink'], LOGGER_DEBUG);
1220
1221                         if ($r[0]["uri"] != $arr['uri'])
1222                         logger('Different uri for same guid: '.$arr['uri'].' and '.$r[0]["uri"].' - this shouldnt happen!', LOGGER_DEBUG);
1223                 }
1224         }
1225
1226         // Shouldn't happen but we want to make absolutely sure it doesn't leak from a plugin.
1227         // Deactivated, since the bbcode parser can handle with it - and it destroys posts with some smileys that contain "<"
1228         //if((strpos($arr['body'],'<') !== false) || (strpos($arr['body'],'>') !== false))
1229         //      $arr['body'] = strip_tags($arr['body']);
1230
1231         item_add_language_opt($arr);
1232
1233         if ($notify)
1234                 $guid_prefix = "";
1235         else
1236                 $guid_prefix = $arr['network'];
1237
1238         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
1239         $arr['guid']          = ((x($arr,'guid'))          ? notags(trim($arr['guid']))          : get_guid(32, $guid_prefix));
1240         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : $arr['guid']);
1241         $arr['extid']         = ((x($arr,'extid'))         ? notags(trim($arr['extid']))         : '');
1242         $arr['author-name']   = ((x($arr,'author-name'))   ? trim($arr['author-name'])   : '');
1243         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
1244         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
1245         $arr['owner-name']    = ((x($arr,'owner-name'))    ? trim($arr['owner-name'])    : '');
1246         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
1247         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
1248         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
1249         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
1250         $arr['commented']     = ((x($arr,'commented')  !== false) ? datetime_convert('UTC','UTC',$arr['commented'])  : datetime_convert());
1251         $arr['received']      = ((x($arr,'received')  !== false) ? datetime_convert('UTC','UTC',$arr['received'])  : datetime_convert());
1252         $arr['changed']       = ((x($arr,'changed')  !== false) ? datetime_convert('UTC','UTC',$arr['changed'])  : datetime_convert());
1253         $arr['title']         = ((x($arr,'title'))         ? trim($arr['title'])         : '');
1254         $arr['location']      = ((x($arr,'location'))      ? trim($arr['location'])      : '');
1255         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
1256         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
1257         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
1258         $arr['deleted']       = 0;
1259         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : '');
1260         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
1261         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
1262         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
1263         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
1264         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
1265         $arr['plink']         = ((x($arr,'plink'))         ? notags(trim($arr['plink']))         : '');
1266         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
1267         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
1268         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
1269         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
1270         $arr['private']       = ((x($arr,'private'))       ? intval($arr['private'])             : 0 );
1271         $arr['bookmark']      = ((x($arr,'bookmark'))      ? intval($arr['bookmark'])            : 0 );
1272         $arr['body']          = ((x($arr,'body'))          ? trim($arr['body'])                  : '');
1273         $arr['tag']           = ((x($arr,'tag'))           ? notags(trim($arr['tag']))           : '');
1274         $arr['attach']        = ((x($arr,'attach'))        ? notags(trim($arr['attach']))        : '');
1275         $arr['app']           = ((x($arr,'app'))           ? notags(trim($arr['app']))           : '');
1276         $arr['origin']        = ((x($arr,'origin'))        ? intval($arr['origin'])              : 0 );
1277         $arr['network']       = ((x($arr,'network'))       ? trim($arr['network'])               : '');
1278         $arr['postopts']      = ((x($arr,'postopts'))      ? trim($arr['postopts'])              : '');
1279         $arr['resource-id']   = ((x($arr,'resource-id'))   ? trim($arr['resource-id'])           : '');
1280         $arr['event-id']      = ((x($arr,'event-id'))      ? intval($arr['event-id'])            : 0 );
1281         $arr['inform']        = ((x($arr,'inform'))        ? trim($arr['inform'])                : '');
1282         $arr['file']          = ((x($arr,'file'))          ? trim($arr['file'])                  : '');
1283
1284         if ($arr['plink'] == "") {
1285                 $a = get_app();
1286                 $arr['plink'] = $a->get_baseurl().'/display/'.urlencode($arr['guid']);
1287         }
1288
1289         if ($arr['network'] == "") {
1290                 $r = q("SELECT `network` FROM `contact` WHERE `network` IN ('%s', '%s', '%s') AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
1291                         dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS),
1292                         dbesc(normalise_link($arr['author-link'])),
1293                         intval($arr['uid'])
1294                 );
1295
1296                 if(!count($r))
1297                         $r = q("SELECT `network` FROM `gcontact` WHERE `network` IN ('%s', '%s', '%s') AND `nurl` = '%s' LIMIT 1",
1298                                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS),
1299                                 dbesc(normalise_link($arr['author-link']))
1300                         );
1301
1302                 if(!count($r))
1303                         $r = q("SELECT `network` FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
1304                                 intval($arr['contact-id']),
1305                                 intval($arr['uid'])
1306                         );
1307
1308                 if(count($r))
1309                         $arr['network'] = $r[0]["network"];
1310
1311                 // Fallback to friendica (why is it empty in some cases?)
1312                 if ($arr['network'] == "")
1313                         $arr['network'] = NETWORK_DFRN;
1314
1315                 logger("item_store: Set network to ".$arr["network"]." for ".$arr["uri"], LOGGER_DEBUG);
1316         }
1317
1318         if ($arr['guid'] != "") {
1319                 // Checking if there is already an item with the same guid
1320                 logger('checking for an item for user '.$arr['uid'].' on network '.$arr['network'].' with the guid '.$arr['guid'], LOGGER_DEBUG);
1321                 $r = q("SELECT `guid` FROM `item` WHERE `guid` = '%s' AND `network` = '%s' AND `uid` = '%d' LIMIT 1",
1322                         dbesc($arr['guid']), dbesc($arr['network']), intval($arr['uid']));
1323
1324                 if(count($r)) {
1325                         logger('found item with guid '.$arr['guid'].' for user '.$arr['uid'].' on network '.$arr['network'], LOGGER_DEBUG);
1326                         return 0;
1327                 }
1328         }
1329
1330         // Check for hashtags in the body and repair or add hashtag links
1331         item_body_set_hashtags($arr);
1332
1333         $arr['thr-parent'] = $arr['parent-uri'];
1334         if($arr['parent-uri'] === $arr['uri']) {
1335                 $parent_id = 0;
1336                 $parent_deleted = 0;
1337                 $allow_cid = $arr['allow_cid'];
1338                 $allow_gid = $arr['allow_gid'];
1339                 $deny_cid  = $arr['deny_cid'];
1340                 $deny_gid  = $arr['deny_gid'];
1341                 $notify_type = 'wall-new';
1342         }
1343         else {
1344
1345                 // find the parent and snarf the item id and ACLs
1346                 // and anything else we need to inherit
1347
1348                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d ORDER BY `id` ASC LIMIT 1",
1349                         dbesc($arr['parent-uri']),
1350                         intval($arr['uid'])
1351                 );
1352
1353                 if(count($r)) {
1354
1355                         // is the new message multi-level threaded?
1356                         // even though we don't support it now, preserve the info
1357                         // and re-attach to the conversation parent.
1358
1359                         if($r[0]['uri'] != $r[0]['parent-uri']) {
1360                                 $arr['parent-uri'] = $r[0]['parent-uri'];
1361                                 $z = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `parent-uri` = '%s' AND `uid` = %d
1362                                         ORDER BY `id` ASC LIMIT 1",
1363                                         dbesc($r[0]['parent-uri']),
1364                                         dbesc($r[0]['parent-uri']),
1365                                         intval($arr['uid'])
1366                                 );
1367                                 if($z && count($z))
1368                                         $r = $z;
1369                         }
1370
1371                         $parent_id      = $r[0]['id'];
1372                         $parent_deleted = $r[0]['deleted'];
1373                         $allow_cid      = $r[0]['allow_cid'];
1374                         $allow_gid      = $r[0]['allow_gid'];
1375                         $deny_cid       = $r[0]['deny_cid'];
1376                         $deny_gid       = $r[0]['deny_gid'];
1377                         $arr['wall']    = $r[0]['wall'];
1378                         $notify_type    = 'comment-new';
1379
1380                         // if the parent is private, force privacy for the entire conversation
1381                         // This differs from the above settings as it subtly allows comments from
1382                         // email correspondents to be private even if the overall thread is not.
1383
1384                         if($r[0]['private'])
1385                                 $arr['private'] = $r[0]['private'];
1386
1387                         // Edge case. We host a public forum that was originally posted to privately.
1388                         // The original author commented, but as this is a comment, the permissions
1389                         // weren't fixed up so it will still show the comment as private unless we fix it here.
1390
1391                         if((intval($r[0]['forum_mode']) == 1) && (! $r[0]['private']))
1392                                 $arr['private'] = 0;
1393
1394
1395                         // If its a post from myself then tag the thread as "mention"
1396                         logger("item_store: Checking if parent ".$parent_id." has to be tagged as mention for user ".$arr['uid'], LOGGER_DEBUG);
1397                         $u = q("select * from user where uid = %d limit 1", intval($arr['uid']));
1398                         if(count($u)) {
1399                                 $a = get_app();
1400                                 $self = normalise_link($a->get_baseurl() . '/profile/' . $u[0]['nickname']);
1401                                 logger("item_store: 'myself' is ".$self." for parent ".$parent_id." checking against ".$arr['author-link']." and ".$arr['owner-link'], LOGGER_DEBUG);
1402                                 if ((normalise_link($arr['author-link']) == $self) OR (normalise_link($arr['owner-link']) == $self)) {
1403                                         q("UPDATE `thread` SET `mention` = 1 WHERE `iid` = %d", intval($parent_id));
1404                                         logger("item_store: tagged thread ".$parent_id." as mention for user ".$self, LOGGER_DEBUG);
1405                                 }
1406                         }
1407                 }
1408                 else {
1409
1410                         // Allow one to see reply tweets from status.net even when
1411                         // we don't have or can't see the original post.
1412
1413                         if($force_parent) {
1414                                 logger('item_store: $force_parent=true, reply converted to top-level post.');
1415                                 $parent_id = 0;
1416                                 $arr['parent-uri'] = $arr['uri'];
1417                                 $arr['gravity'] = 0;
1418                         }
1419                         else {
1420                                 logger('item_store: item parent '.$arr['parent-uri'].' for '.$arr['uid'].' was not found - ignoring item');
1421                                 return 0;
1422                         }
1423
1424                         $parent_deleted = 0;
1425                 }
1426         }
1427
1428         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `network` = '%s' AND `uid` = %d LIMIT 1",
1429                 dbesc($arr['uri']),
1430                 dbesc($arr['network']),
1431                 intval($arr['uid'])
1432         );
1433         if($r && count($r)) {
1434                 logger('duplicated item with the same uri found. ' . print_r($arr,true));
1435                 return 0;
1436         }
1437
1438         // Check for an existing post with the same content. There seems to be a problem with OStatus.
1439         $r = q("SELECT `id` FROM `item` WHERE `body` = '%s' AND `network` = '%s' AND `created` = '%s' AND `contact-id` = %d AND `uid` = %d LIMIT 1",
1440                 dbesc($arr['body']),
1441                 dbesc($arr['network']),
1442                 dbesc($arr['created']),
1443                 intval($arr['contact-id']),
1444                 intval($arr['uid'])
1445         );
1446         if($r && count($r)) {
1447                 logger('duplicated item with the same body found. ' . print_r($arr,true));
1448                 return 0;
1449         }
1450
1451         // Is this item available in the global items (with uid=0)?
1452         if ($arr["uid"] == 0) {
1453                 $arr["global"] = true;
1454
1455                 q("UPDATE `item` SET `global` = 1 WHERE `guid` = '%s'", dbesc($arr["guid"]));
1456         }  else {
1457                 $isglobal = q("SELECT `global` FROM `item` WHERE `uid` = 0 AND `guid` = '%s'", dbesc($arr["guid"]));
1458
1459                 $arr["global"] = (count($isglobal) > 0);
1460         }
1461
1462         // Fill the cache field
1463         put_item_in_cache($arr);
1464
1465         if ($notify)
1466                 call_hooks('post_local',$arr);
1467         else
1468                 call_hooks('post_remote',$arr);
1469
1470         if(x($arr,'cancel')) {
1471                 logger('item_store: post cancelled by plugin.');
1472                 return 0;
1473         }
1474
1475         // Store the unescaped version
1476         $unescaped = $arr;
1477
1478         dbesc_array($arr);
1479
1480         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
1481
1482         $r = dbq("INSERT INTO `item` (`"
1483                         . implode("`, `", array_keys($arr))
1484                         . "`) VALUES ('"
1485                         . implode("', '", array_values($arr))
1486                         . "')" );
1487
1488         // And restore it
1489         $arr = $unescaped;
1490
1491         // find the item we just created
1492         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `network` = '%s' ORDER BY `id` ASC ",
1493                 dbesc($arr['uri']),
1494                 intval($arr['uid']),
1495                 dbesc($arr['network'])
1496         );
1497
1498         if(count($r)) {
1499
1500                 // Store the guid and other relevant data
1501                 add_guid($arr);
1502
1503                 $current_post = $r[0]['id'];
1504                 logger('item_store: created item ' . $current_post);
1505
1506                 // Set "success_update" and "last-item" to the date of the last time we heard from this contact
1507                 // This can be used to filter for inactive contacts.
1508                 // Only do this for public postings to avoid privacy problems, since poco data is public.
1509                 // Don't set this value if it isn't from the owner (could be an author that we don't know)
1510
1511                 $update = (!$arr['private'] AND (($arr["author-link"] === $arr["owner-link"]) OR ($arr["parent-uri"] === $arr["uri"])));
1512
1513                 // Is it a forum? Then we don't care about the rules from above
1514                 if (!$update AND ($arr["network"] == NETWORK_DFRN) AND ($arr["parent-uri"] === $arr["uri"])) {
1515                         $isforum = q("SELECT `forum` FROM `contact` WHERE `id` = %d AND `forum`",
1516                                         intval($arr['contact-id']));
1517                         if ($isforum)
1518                                 $update = true;
1519                 }
1520
1521                 if ($update)
1522                         q("UPDATE `contact` SET `success_update` = '%s', `last-item` = '%s' WHERE `id` = %d",
1523                                 dbesc($arr['received']),
1524                                 dbesc($arr['received']),
1525                                 intval($arr['contact-id'])
1526                         );
1527         } else {
1528                 logger('item_store: could not locate created item');
1529                 return 0;
1530         }
1531         if(count($r) > 1) {
1532                 logger('item_store: duplicated post occurred. Removing duplicates. uri = '.$arr['uri'].' uid = '.$arr['uid']);
1533                 q("DELETE FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `id` != %d ",
1534                         dbesc($arr['uri']),
1535                         intval($arr['uid']),
1536                         intval($current_post)
1537                 );
1538         }
1539
1540         if((! $parent_id) || ($arr['parent-uri'] === $arr['uri']))
1541                 $parent_id = $current_post;
1542
1543         if(strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid))
1544                 $private = 1;
1545         else
1546                 $private = $arr['private'];
1547
1548         // Set parent id - and also make sure to inherit the parent's ACLs.
1549
1550         $r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
1551                 `deny_cid` = '%s', `deny_gid` = '%s', `private` = %d, `deleted` = %d WHERE `id` = %d",
1552                 intval($parent_id),
1553                 dbesc($allow_cid),
1554                 dbesc($allow_gid),
1555                 dbesc($deny_cid),
1556                 dbesc($deny_gid),
1557                 intval($private),
1558                 intval($parent_deleted),
1559                 intval($current_post)
1560         );
1561
1562         $arr['id'] = $current_post;
1563         $arr['parent'] = $parent_id;
1564         $arr['allow_cid'] = $allow_cid;
1565         $arr['allow_gid'] = $allow_gid;
1566         $arr['deny_cid'] = $deny_cid;
1567         $arr['deny_gid'] = $deny_gid;
1568         $arr['private'] = $private;
1569         $arr['deleted'] = $parent_deleted;
1570
1571         // update the commented timestamp on the parent
1572         // Only update "commented" if it is really a comment
1573         if (($arr['verb'] == ACTIVITY_POST) OR !get_config("system", "like_no_comment"))
1574                 q("UPDATE `item` SET `commented` = '%s', `changed` = '%s' WHERE `id` = %d",
1575                         dbesc(datetime_convert()),
1576                         dbesc(datetime_convert()),
1577                         intval($parent_id)
1578                 );
1579         else
1580                 q("UPDATE `item` SET `changed` = '%s' WHERE `id` = %d",
1581                         dbesc(datetime_convert()),
1582                         intval($parent_id)
1583                 );
1584
1585         if($dsprsig) {
1586                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
1587                         intval($current_post),
1588                         dbesc($dsprsig->signed_text),
1589                         dbesc($dsprsig->signature),
1590                         dbesc($dsprsig->signer)
1591                 );
1592         }
1593
1594
1595         /**
1596          * If this is now the last-child, force all _other_ children of this parent to *not* be last-child
1597          */
1598
1599         if($arr['last-child']) {
1600                 $r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d",
1601                         dbesc($arr['uri']),
1602                         intval($arr['uid']),
1603                         intval($current_post)
1604                 );
1605         }
1606
1607         $deleted = tag_deliver($arr['uid'],$current_post);
1608
1609         // current post can be deleted if is for a community page and no mention are
1610         // in it.
1611         if (!$deleted AND !$dontcache) {
1612
1613                 $r = q('SELECT * FROM `item` WHERE id = %d', intval($current_post));
1614                 if (count($r) == 1) {
1615                         if ($notify)
1616                                 call_hooks('post_local_end', $r[0]);
1617                         else
1618                                 call_hooks('post_remote_end', $r[0]);
1619                 } else
1620                         logger('item_store: new item not found in DB, id ' . $current_post);
1621         }
1622
1623         // Add every contact of the post to the global contact table
1624         poco_store($arr);
1625
1626         create_tags_from_item($current_post);
1627         create_files_from_item($current_post);
1628
1629         // Only check for notifications on start posts
1630         if ($arr['parent-uri'] === $arr['uri']) {
1631                 add_thread($current_post);
1632                 logger('item_store: Check notification for contact '.$arr['contact-id'].' and post '.$current_post, LOGGER_DEBUG);
1633
1634                 // Send a notification for every new post?
1635                 $r = q("SELECT `notify_new_posts` FROM `contact` WHERE `id` = %d AND `uid` = %d AND `notify_new_posts` LIMIT 1",
1636                         intval($arr['contact-id']),
1637                         intval($arr['uid'])
1638                 );
1639                 $send_notification = count($r);
1640
1641                 if (!$send_notification) {
1642                         $tags = q("SELECT `url` FROM `term` WHERE `otype` = %d AND `oid` = %d AND `type` = %d AND `uid` = %d",
1643                                 intval(TERM_OBJ_POST), intval($current_post), intval(TERM_MENTION), intval($arr['uid']));
1644
1645                         if (count($tags)) {
1646                                 foreach ($tags AS $tag) {
1647                                         $r = q("SELECT `id` FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d AND `notify_new_posts`",
1648                                                 normalise_link($tag["url"]), intval($arr['uid']));
1649                                         if (count($r))
1650                                                 $send_notification = true;
1651                                 }
1652                         }
1653                 }
1654
1655                 if ($send_notification) {
1656                         logger('item_store: Send notification for contact '.$arr['contact-id'].' and post '.$current_post, LOGGER_DEBUG);
1657                         $u = q("SELECT * FROM user WHERE uid = %d LIMIT 1",
1658                                 intval($arr['uid']));
1659
1660                         $item = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d",
1661                                 intval($current_post),
1662                                 intval($arr['uid'])
1663                         );
1664
1665                         $a = get_app();
1666
1667                         require_once('include/enotify.php');
1668                         notification(array(
1669                                 'type'         => NOTIFY_SHARE,
1670                                 'notify_flags' => $u[0]['notify-flags'],
1671                                 'language'     => $u[0]['language'],
1672                                 'to_name'      => $u[0]['username'],
1673                                 'to_email'     => $u[0]['email'],
1674                                 'uid'          => $u[0]['uid'],
1675                                 'item'         => $item[0],
1676                                 'link'         => $a->get_baseurl().'/display/'.urlencode($arr['guid']),
1677                                 'source_name'  => $item[0]['author-name'],
1678                                 'source_link'  => $item[0]['author-link'],
1679                                 'source_photo' => $item[0]['author-avatar'],
1680                                 'verb'         => ACTIVITY_TAG,
1681                                 'otype'        => 'item',
1682                                 'parent'       => $arr['parent']
1683                         ));
1684                         logger('item_store: Notification sent for contact '.$arr['contact-id'].' and post '.$current_post, LOGGER_DEBUG);
1685                 }
1686         } else {
1687                 update_thread($parent_id);
1688                 add_shadow_entry($arr);
1689         }
1690
1691         if ($notify)
1692                 proc_run('php', "include/notifier.php", $notify_type, $current_post);
1693
1694         return $current_post;
1695 }
1696
1697 function item_body_set_hashtags(&$item) {
1698
1699         $tags = get_tags($item["body"]);
1700
1701         // No hashtags?
1702         if(!count($tags))
1703                 return(false);
1704
1705         // This sorting is important when there are hashtags that are part of other hashtags
1706         // Otherwise there could be problems with hashtags like #test and #test2
1707         rsort($tags);
1708
1709         $a = get_app();
1710
1711         $URLSearchString = "^\[\]";
1712
1713         // All hashtags should point to the home server
1714         //$item["body"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1715         //              "#[url=".$a->get_baseurl()."/search?tag=$2]$2[/url]", $item["body"]);
1716
1717         //$item["tag"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1718         //              "#[url=".$a->get_baseurl()."/search?tag=$2]$2[/url]", $item["tag"]);
1719
1720         // mask hashtags inside of url, bookmarks and attachments to avoid urls in urls
1721         $item["body"] = preg_replace_callback("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1722                 function ($match){
1723                         return("[url=".str_replace("#", "&num;", $match[1])."]".str_replace("#", "&num;", $match[2])."[/url]");
1724                 },$item["body"]);
1725
1726         $item["body"] = preg_replace_callback("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism",
1727                 function ($match){
1728                         return("[bookmark=".str_replace("#", "&num;", $match[1])."]".str_replace("#", "&num;", $match[2])."[/bookmark]");
1729                 },$item["body"]);
1730
1731         $item["body"] = preg_replace_callback("/\[attachment (.*)\](.*?)\[\/attachment\]/ism",
1732                 function ($match){
1733                         return("[attachment ".str_replace("#", "&num;", $match[1])."]".$match[2]."[/attachment]");
1734                 },$item["body"]);
1735
1736         // Repair recursive urls
1737         $item["body"] = preg_replace("/&num;\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1738                         "&num;$2", $item["body"]);
1739
1740
1741         foreach($tags as $tag) {
1742                 if(strpos($tag,'#') !== 0)
1743                         continue;
1744
1745                 if(strpos($tag,'[url='))
1746                         continue;
1747
1748                 $basetag = str_replace('_',' ',substr($tag,1));
1749
1750                 $newtag = '#[url='.$a->get_baseurl().'/search?tag='.rawurlencode($basetag).']'.$basetag.'[/url]';
1751
1752                 $item["body"] = str_replace($tag, $newtag, $item["body"]);
1753
1754                 if(!stristr($item["tag"],"/search?tag=".$basetag."]".$basetag."[/url]")) {
1755                         if(strlen($item["tag"]))
1756                                 $item["tag"] = ','.$item["tag"];
1757                         $item["tag"] = $newtag.$item["tag"];
1758                 }
1759         }
1760
1761         // Convert back the masked hashtags
1762         $item["body"] = str_replace("&num;", "#", $item["body"]);
1763 }
1764
1765 function get_item_guid($id) {
1766         $r = q("SELECT `guid` FROM `item` WHERE `id` = %d LIMIT 1", intval($id));
1767         if (count($r))
1768                 return($r[0]["guid"]);
1769         else
1770                 return("");
1771 }
1772
1773 function get_item_id($guid, $uid = 0) {
1774
1775         $nick = "";
1776         $id = 0;
1777
1778         if ($uid == 0)
1779                 $uid == local_user();
1780
1781         // Does the given user have this item?
1782         if ($uid) {
1783                 $r = q("SELECT `item`.`id`, `user`.`nickname` FROM `item` INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1784                         WHERE `item`.`visible` = 1 AND `item`.`deleted` = 0 and `item`.`moderated` = 0
1785                                 AND `item`.`guid` = '%s' AND `item`.`uid` = %d", dbesc($guid), intval($uid));
1786                 if (count($r)) {
1787                         $id = $r[0]["id"];
1788                         $nick = $r[0]["nickname"];
1789                 }
1790         }
1791
1792         // Or is it anywhere on the server?
1793         if ($nick == "") {
1794                 $r = q("SELECT `item`.`id`, `user`.`nickname` FROM `item` INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1795                         WHERE `item`.`visible` = 1 AND `item`.`deleted` = 0 and `item`.`moderated` = 0
1796                                 AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
1797                                 AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
1798                                 AND `item`.`private` = 0 AND `item`.`wall` = 1
1799                                 AND `item`.`guid` = '%s'", dbesc($guid));
1800                 if (count($r)) {
1801                         $id = $r[0]["id"];
1802                         $nick = $r[0]["nickname"];
1803                 }
1804         }
1805         return(array("nick" => $nick, "id" => $id));
1806 }
1807
1808 // return - test
1809 function get_item_contact($item,$contacts) {
1810         if(! count($contacts) || (! is_array($item)))
1811                 return false;
1812         foreach($contacts as $contact) {
1813                 if($contact['id'] == $item['contact-id']) {
1814                         return $contact;
1815                         break; // NOTREACHED
1816                 }
1817         }
1818         return false;
1819 }
1820
1821 /**
1822  * look for mention tags and setup a second delivery chain for forum/community posts if appropriate
1823  * @param int $uid
1824  * @param int $item_id
1825  * @return bool true if item was deleted, else false
1826  */
1827 function tag_deliver($uid,$item_id) {
1828
1829         //
1830
1831         $a = get_app();
1832
1833         $mention = false;
1834
1835         $u = q("select * from user where uid = %d limit 1",
1836                 intval($uid)
1837         );
1838         if(! count($u))
1839                 return;
1840
1841         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1842         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1843
1844
1845         $i = q("select * from item where id = %d and uid = %d limit 1",
1846                 intval($item_id),
1847                 intval($uid)
1848         );
1849         if(! count($i))
1850                 return;
1851
1852         $item = $i[0];
1853
1854         $link = normalise_link($a->get_baseurl() . '/profile/' . $u[0]['nickname']);
1855
1856         // Diaspora uses their own hardwired link URL in @-tags
1857         // instead of the one we supply with webfinger
1858
1859         $dlink = normalise_link($a->get_baseurl() . '/u/' . $u[0]['nickname']);
1860
1861         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1862         if($cnt) {
1863                 foreach($matches as $mtch) {
1864                         if(link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
1865                                 $mention = true;
1866                                 logger('tag_deliver: mention found: ' . $mtch[2]);
1867                         }
1868                 }
1869         }
1870
1871         if(! $mention){
1872                 if ( ($community_page || $prvgroup) &&
1873                           (!$item['wall']) && (!$item['origin']) && ($item['id'] == $item['parent'])){
1874                         // mmh.. no mention.. community page or private group... no wall.. no origin.. top-post (not a comment)
1875                         // delete it!
1876                         logger("tag_deliver: no-mention top-level post to communuty or private group. delete.");
1877                         q("DELETE FROM item WHERE id = %d and uid = %d",
1878                                 intval($item_id),
1879                                 intval($uid)
1880                         );
1881                         return true;
1882                 }
1883                 return;
1884         }
1885
1886
1887         // send a notification
1888
1889         // use a local photo if we have one
1890
1891         $r = q("select * from contact where uid = %d and nurl = '%s' limit 1",
1892                 intval($u[0]['uid']),
1893                 dbesc(normalise_link($item['author-link']))
1894         );
1895         $photo = (($r && count($r)) ? $r[0]['thumb'] : $item['author-avatar']);
1896
1897
1898         require_once('include/enotify.php');
1899         notification(array(
1900                 'type'         => NOTIFY_TAGSELF,
1901                 'notify_flags' => $u[0]['notify-flags'],
1902                 'language'     => $u[0]['language'],
1903                 'to_name'      => $u[0]['username'],
1904                 'to_email'     => $u[0]['email'],
1905                 'uid'          => $u[0]['uid'],
1906                 'item'         => $item,
1907                 'link'         => $a->get_baseurl() . '/display/'.urlencode(get_item_guid($item['id'])),
1908                 'source_name'  => $item['author-name'],
1909                 'source_link'  => $item['author-link'],
1910                 'source_photo' => $photo,
1911                 'verb'         => ACTIVITY_TAG,
1912                 'otype'        => 'item',
1913                 'parent'       => $item['parent']
1914         ));
1915
1916
1917         $arr = array('item' => $item, 'user' => $u[0], 'contact' => $r[0]);
1918
1919         call_hooks('tagged', $arr);
1920
1921         if((! $community_page) && (! $prvgroup))
1922                 return;
1923
1924
1925         // tgroup delivery - setup a second delivery chain
1926         // prevent delivery looping - only proceed
1927         // if the message originated elsewhere and is a top-level post
1928
1929         if(($item['wall']) || ($item['origin']) || ($item['id'] != $item['parent']))
1930                 return;
1931
1932         // now change this copy of the post to a forum head message and deliver to all the tgroup members
1933
1934
1935         $c = q("select name, url, thumb from contact where self = 1 and uid = %d limit 1",
1936                 intval($u[0]['uid'])
1937         );
1938         if(! count($c))
1939                 return;
1940
1941         // also reset all the privacy bits to the forum default permissions
1942
1943         $private = ($u[0]['allow_cid'] || $u[0]['allow_gid'] || $u[0]['deny_cid'] || $u[0]['deny_gid']) ? 1 : 0;
1944
1945         $forum_mode = (($prvgroup) ? 2 : 1);
1946
1947         q("update item set wall = 1, origin = 1, forum_mode = %d, `owner-name` = '%s', `owner-link` = '%s', `owner-avatar` = '%s',
1948                 `private` = %d, `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s'  where id = %d",
1949                 intval($forum_mode),
1950                 dbesc($c[0]['name']),
1951                 dbesc($c[0]['url']),
1952                 dbesc($c[0]['thumb']),
1953                 intval($private),
1954                 dbesc($u[0]['allow_cid']),
1955                 dbesc($u[0]['allow_gid']),
1956                 dbesc($u[0]['deny_cid']),
1957                 dbesc($u[0]['deny_gid']),
1958                 intval($item_id)
1959         );
1960         update_thread($item_id);
1961
1962         proc_run('php','include/notifier.php','tgroup',$item_id);
1963
1964 }
1965
1966
1967
1968 function tgroup_check($uid,$item) {
1969
1970         $a = get_app();
1971
1972         $mention = false;
1973
1974         // check that the message originated elsewhere and is a top-level post
1975
1976         if(($item['wall']) || ($item['origin']) || ($item['uri'] != $item['parent-uri']))
1977                 return false;
1978
1979
1980         $u = q("select * from user where uid = %d limit 1",
1981                 intval($uid)
1982         );
1983         if(! count($u))
1984                 return false;
1985
1986         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1987         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1988
1989
1990         $link = normalise_link($a->get_baseurl() . '/profile/' . $u[0]['nickname']);
1991
1992         // Diaspora uses their own hardwired link URL in @-tags
1993         // instead of the one we supply with webfinger
1994
1995         $dlink = normalise_link($a->get_baseurl() . '/u/' . $u[0]['nickname']);
1996
1997         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1998         if($cnt) {
1999                 foreach($matches as $mtch) {
2000                         if(link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
2001                                 $mention = true;
2002                                 logger('tgroup_check: mention found: ' . $mtch[2]);
2003                         }
2004                 }
2005         }
2006
2007         if(! $mention)
2008                 return false;
2009
2010         if((! $community_page) && (! $prvgroup))
2011                 return false;
2012
2013
2014
2015         return true;
2016
2017 }
2018
2019
2020
2021
2022
2023
2024 function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
2025
2026         $a = get_app();
2027
2028         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
2029
2030         if($contact['duplex'] && $contact['dfrn-id'])
2031                 $idtosend = '0:' . $orig_id;
2032         if($contact['duplex'] && $contact['issued-id'])
2033                 $idtosend = '1:' . $orig_id;
2034
2035
2036         $rino = get_config('system','rino_encrypt');
2037         $rino = intval($rino);
2038         // use RINO1 if mcrypt isn't installed and RINO2 was selected
2039         if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
2040
2041         logger("Local rino version: ". $rino, LOGGER_DEBUG);
2042
2043         $ssl_val = intval(get_config('system','ssl_policy'));
2044         $ssl_policy = '';
2045
2046         switch($ssl_val){
2047                 case SSL_POLICY_FULL:
2048                         $ssl_policy = 'full';
2049                         break;
2050                 case SSL_POLICY_SELFSIGN:
2051                         $ssl_policy = 'self';
2052                         break;
2053                 case SSL_POLICY_NONE:
2054                 default:
2055                         $ssl_policy = 'none';
2056                         break;
2057         }
2058
2059         $url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino='.$rino : '');
2060
2061         logger('dfrn_deliver: ' . $url);
2062
2063         $xml = fetch_url($url);
2064
2065         $curl_stat = $a->get_curl_code();
2066         if(! $curl_stat)
2067                 return(-1); // timed out
2068
2069         logger('dfrn_deliver: ' . $xml, LOGGER_DATA);
2070
2071         if(! $xml)
2072                 return 3;
2073
2074         if(strpos($xml,'<?xml') === false) {
2075                 logger('dfrn_deliver: no valid XML returned');
2076                 logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA);
2077                 return 3;
2078         }
2079
2080         $res = parse_xml_string($xml);
2081
2082         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
2083                 return (($res->status) ? $res->status : 3);
2084
2085         $postvars     = array();
2086         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
2087         $challenge    = hex2bin((string) $res->challenge);
2088         $perm         = (($res->perm) ? $res->perm : null);
2089         $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0);
2090         $rino_remote_version = intval($res->rino);
2091         $page         = (($owner['page-flags'] == PAGE_COMMUNITY) ? 1 : 0);
2092
2093         logger("Remote rino version: ".$rino_remote_version." for ".$contact["url"], LOGGER_DEBUG);
2094
2095         if($owner['page-flags'] == PAGE_PRVGROUP)
2096                 $page = 2;
2097
2098         $final_dfrn_id = '';
2099
2100         if($perm) {
2101                 if((($perm == 'rw') && (! intval($contact['writable'])))
2102                 || (($perm == 'r') && (intval($contact['writable'])))) {
2103                         q("update contact set writable = %d where id = %d",
2104                                 intval(($perm == 'rw') ? 1 : 0),
2105                                 intval($contact['id'])
2106                         );
2107                         $contact['writable'] = (string) 1 - intval($contact['writable']);
2108                 }
2109         }
2110
2111         if(($contact['duplex'] && strlen($contact['pubkey']))
2112                 || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey']))
2113                 || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) {
2114                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
2115                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
2116         }
2117         else {
2118                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
2119                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
2120         }
2121
2122         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
2123
2124         if(strpos($final_dfrn_id,':') == 1)
2125                 $final_dfrn_id = substr($final_dfrn_id,2);
2126
2127         if($final_dfrn_id != $orig_id) {
2128                 logger('dfrn_deliver: wrong dfrn_id.');
2129                 // did not decode properly - cannot trust this site
2130                 return 3;
2131         }
2132
2133         $postvars['dfrn_id']      = $idtosend;
2134         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
2135         if($dissolve)
2136                 $postvars['dissolve'] = '1';
2137
2138
2139         if((($contact['rel']) && ($contact['rel'] != CONTACT_IS_SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
2140                 $postvars['data'] = $atom;
2141                 $postvars['perm'] = 'rw';
2142         }
2143         else {
2144                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
2145                 $postvars['perm'] = 'r';
2146         }
2147
2148         $postvars['ssl_policy'] = $ssl_policy;
2149
2150         if($page)
2151                 $postvars['page'] = $page;
2152
2153
2154         if($rino>0 && $rino_remote_version>0 && (! $dissolve)) {
2155                 logger('rino version: '. $rino_remote_version);
2156
2157                 switch($rino_remote_version) {
2158                         case 1:
2159                                 // Deprecated rino version!
2160                                 $key = substr(random_string(),0,16);
2161                                 $data = aes_encrypt($postvars['data'],$key);
2162                                 break;
2163                         case 2:
2164                                 // RINO 2 based on php-encryption
2165                                 try {
2166                                         $key = Crypto::createNewRandomKey();
2167                                 } catch (CryptoTestFailed $ex) {
2168                                         logger('Cannot safely create a key');
2169                                         return -1;
2170                                 } catch (CannotPerformOperation $ex) {
2171                                         logger('Cannot safely create a key');
2172                                         return -1;
2173                                 }
2174                                 try {
2175                                         $data = Crypto::encrypt($postvars['data'], $key);
2176                                 } catch (CryptoTestFailed $ex) {
2177                                         logger('Cannot safely perform encryption');
2178                                         return -1;
2179                                 } catch (CannotPerformOperation $ex) {
2180                                         logger('Cannot safely perform encryption');
2181                                         return -1;
2182                                 }
2183                                 break;
2184                         default:
2185                                 logger("rino: invalid requested verision '$rino_remote_version'");
2186                                 return -1;
2187                 }
2188
2189                 $postvars['rino'] = $rino_remote_version;
2190                 $postvars['data'] = bin2hex($data);
2191
2192                 #logger('rino: sent key = ' . $key, LOGGER_DEBUG);
2193
2194
2195                 if($dfrn_version >= 2.1) {
2196                         if(($contact['duplex'] && strlen($contact['pubkey']))
2197                                 || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey']))
2198                                 || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) {
2199
2200                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
2201                         }
2202                         else {
2203                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
2204                         }
2205                 }
2206                 else {
2207                         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
2208                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
2209                         }
2210                         else {
2211                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
2212                         }
2213                 }
2214
2215                 logger('md5 rawkey ' . md5($postvars['key']));
2216
2217                 $postvars['key'] = bin2hex($postvars['key']);
2218         }
2219
2220
2221         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
2222
2223         $xml = post_url($contact['notify'],$postvars);
2224
2225         logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
2226
2227         $curl_stat = $a->get_curl_code();
2228         if((! $curl_stat) || (! strlen($xml)))
2229                 return(-1); // timed out
2230
2231         if(($curl_stat == 503) && (stristr($a->get_curl_headers(),'retry-after')))
2232                 return(-1);
2233
2234         if(strpos($xml,'<?xml') === false) {
2235                 logger('dfrn_deliver: phase 2: no valid XML returned');
2236                 logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA);
2237                 return 3;
2238         }
2239
2240         if($contact['term-date'] != '0000-00-00 00:00:00') {
2241                 logger("dfrn_deliver: $url back from the dead - removing mark for death");
2242                 require_once('include/Contact.php');
2243                 unmark_for_death($contact);
2244         }
2245
2246         $res = parse_xml_string($xml);
2247
2248         return $res->status;
2249 }
2250
2251
2252 /*
2253   This function returns true if $update has an edited timestamp newer
2254   than $existing, i.e. $update contains new data which should override
2255   what's already there.  If there is no timestamp yet, the update is
2256   assumed to be newer.  If the update has no timestamp, the existing
2257   item is assumed to be up-to-date.  If the timestamps are equal it
2258   assumes the update has been seen before and should be ignored.
2259   */
2260 function edited_timestamp_is_newer($existing, $update) {
2261     if (!x($existing,'edited') || !$existing['edited']) {
2262         return true;
2263     }
2264     if (!x($update,'edited') || !$update['edited']) {
2265         return false;
2266     }
2267     $existing_edited = datetime_convert('UTC', 'UTC', $existing['edited']);
2268     $update_edited = datetime_convert('UTC', 'UTC', $update['edited']);
2269     return (strcmp($existing_edited, $update_edited) < 0);
2270 }
2271
2272 /**
2273  *
2274  * consume_feed - process atom feed and update anything/everything we might need to update
2275  *
2276  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
2277  *
2278  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
2279  *             It is this person's stuff that is going to be updated.
2280  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
2281  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
2282  *             have a contact record.
2283  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
2284  *        might not) try and subscribe to it.
2285  * $datedir sorts in reverse order
2286  * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
2287  *      imported prior to its children being seen in the stream unless we are certain
2288  *      of how the feed is arranged/ordered.
2289  * With $pass = 1, we only pull parent items out of the stream.
2290  * With $pass = 2, we only pull children (comments/likes).
2291  *
2292  * So running this twice, first with pass 1 and then with pass 2 will do the right
2293  * thing regardless of feed ordering. This won't be adequate in a fully-threaded
2294  * model where comments can have sub-threads. That would require some massive sorting
2295  * to get all the feed items into a mostly linear ordering, and might still require
2296  * recursion.
2297  */
2298
2299 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0) {
2300         if ($contact['network'] === NETWORK_OSTATUS) {
2301                 if ($pass < 2) {
2302                         logger("Consume OStatus messages ", LOGGER_DEBUG);
2303                         ostatus_import($xml,$importer,$contact, $hub);
2304                 }
2305                 return;
2306         }
2307
2308         if ($contact['network'] === NETWORK_FEED) {
2309                 if ($pass < 2) {
2310                         logger("Consume feeds", LOGGER_DEBUG);
2311                         feed_import($xml,$importer,$contact, $hub);
2312                 }
2313                 return;
2314         }
2315
2316         require_once('library/simplepie/simplepie.inc');
2317         require_once('include/contact_selectors.php');
2318
2319         if(! strlen($xml)) {
2320                 logger('consume_feed: empty input');
2321                 return;
2322         }
2323
2324         $feed = new SimplePie();
2325         $feed->set_raw_data($xml);
2326         if($datedir)
2327                 $feed->enable_order_by_date(true);
2328         else
2329                 $feed->enable_order_by_date(false);
2330         $feed->init();
2331
2332         if($feed->error())
2333                 logger('consume_feed: Error parsing XML: ' . $feed->error());
2334
2335         $permalink = $feed->get_permalink();
2336
2337         // Check at the feed level for updated contact name and/or photo
2338
2339         $name_updated  = '';
2340         $new_name = '';
2341         $photo_timestamp = '';
2342         $photo_url = '';
2343         $birthday = '';
2344         $contact_updated = '';
2345
2346         $hubs = $feed->get_links('hub');
2347         logger('consume_feed: hubs: ' . print_r($hubs,true), LOGGER_DATA);
2348
2349         if(count($hubs))
2350                 $hub = implode(',', $hubs);
2351
2352         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
2353         if(! $rawtags)
2354                 $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
2355         if($rawtags) {
2356                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
2357                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
2358                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
2359                         $new_name = $elems['name'][0]['data'];
2360
2361                         // Manually checking for changed contact names
2362                         if (($new_name != $contact['name']) AND ($new_name != "") AND ($name_updated <= $contact['name-date'])) {
2363                                 $name_updated = date("c");
2364                                 $photo_timestamp = date("c");
2365                         }
2366                 }
2367                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
2368                         if ($photo_timestamp == "")
2369                                 $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
2370                         $photo_url = $elems['link'][0]['attribs']['']['href'];
2371                 }
2372
2373                 if((x($rawtags[0]['child'], NAMESPACE_DFRN)) && (x($rawtags[0]['child'][NAMESPACE_DFRN],'birthday'))) {
2374                         $birthday = datetime_convert('UTC','UTC', $rawtags[0]['child'][NAMESPACE_DFRN]['birthday'][0]['data']);
2375                 }
2376         }
2377
2378         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
2379                 logger('consume_feed: Updating photo for '.$contact['name'].' from '.$photo_url.' uid: '.$contact['uid']);
2380
2381                 $contact_updated = $photo_timestamp;
2382
2383                 require_once("include/Photo.php");
2384                 $photo_failure = false;
2385                 $have_photo = false;
2386
2387                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
2388                         intval($contact['id']),
2389                         intval($contact['uid'])
2390                 );
2391                 if(count($r)) {
2392                         $resource_id = $r[0]['resource-id'];
2393                         $have_photo = true;
2394                 }
2395                 else {
2396                         $resource_id = photo_new_resource();
2397                 }
2398
2399                 $img_str = fetch_url($photo_url,true);
2400                 // guess mimetype from headers or filename
2401                 $type = guess_image_type($photo_url,true);
2402
2403
2404                 $img = new Photo($img_str, $type);
2405                 if($img->is_valid()) {
2406                         if($have_photo) {
2407                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
2408                                         dbesc($resource_id),
2409                                         intval($contact['id']),
2410                                         intval($contact['uid'])
2411                                 );
2412                         }
2413
2414                         $img->scaleImageSquare(175);
2415
2416                         $hash = $resource_id;
2417                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 4);
2418
2419                         $img->scaleImage(80);
2420                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 5);
2421
2422                         $img->scaleImage(48);
2423                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 6);
2424
2425                         $a = get_app();
2426
2427                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
2428                                 WHERE `uid` = %d AND `id` = %d",
2429                                 dbesc(datetime_convert()),
2430                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.'.$img->getExt()),
2431                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.'.$img->getExt()),
2432                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.'.$img->getExt()),
2433                                 intval($contact['uid']),
2434                                 intval($contact['id'])
2435                         );
2436                 }
2437         }
2438
2439         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
2440                 if ($name_updated > $contact_updated)
2441                         $contact_updated = $name_updated;
2442
2443                 $r = q("select * from contact where uid = %d and id = %d limit 1",
2444                         intval($contact['uid']),
2445                         intval($contact['id'])
2446                 );
2447
2448                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d",
2449                         dbesc(notags(trim($new_name))),
2450                         dbesc(datetime_convert()),
2451                         intval($contact['uid']),
2452                         intval($contact['id'])
2453                 );
2454
2455                 // do our best to update the name on content items
2456
2457                 if(count($r)) {
2458                         q("update item set `author-name` = '%s' where `author-name` = '%s' and `author-link` = '%s' and uid = %d",
2459                                 dbesc(notags(trim($new_name))),
2460                                 dbesc($r[0]['name']),
2461                                 dbesc($r[0]['url']),
2462                                 intval($contact['uid'])
2463                         );
2464                 }
2465         }
2466
2467         if ($contact_updated AND $new_name AND $photo_url)
2468                 poco_check($contact['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $contact['id'], $contact['uid']);
2469
2470         if(strlen($birthday)) {
2471                 if(substr($birthday,0,4) != $contact['bdyear']) {
2472                         logger('consume_feed: updating birthday: ' . $birthday);
2473
2474                         /**
2475                          *
2476                          * Add new birthday event for this person
2477                          *
2478                          * $bdtext is just a readable placeholder in case the event is shared
2479                          * with others. We will replace it during presentation to our $importer
2480                          * to contain a sparkle link and perhaps a photo.
2481                          *
2482                          */
2483
2484                         $bdtext = sprintf( t('%s\'s birthday'), $contact['name']);
2485                         $bdtext2 = sprintf( t('Happy Birthday %s'), ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ) ;
2486
2487
2488                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`summary`,`desc`,`type`)
2489                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ",
2490                                 intval($contact['uid']),
2491                                 intval($contact['id']),
2492                                 dbesc(datetime_convert()),
2493                                 dbesc(datetime_convert()),
2494                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
2495                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
2496                                 dbesc($bdtext),
2497                                 dbesc($bdtext2),
2498                                 dbesc('birthday')
2499                         );
2500
2501
2502                         // update bdyear
2503
2504                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d",
2505                                 dbesc(substr($birthday,0,4)),
2506                                 intval($contact['uid']),
2507                                 intval($contact['id'])
2508                         );
2509
2510                         // This function is called twice without reloading the contact
2511                         // Make sure we only create one event. This is why &$contact
2512                         // is a reference var in this function
2513
2514                         $contact['bdyear'] = substr($birthday,0,4);
2515                 }
2516         }
2517
2518         $community_page = 0;
2519         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
2520         if($rawtags) {
2521                 $community_page = intval($rawtags[0]['data']);
2522         }
2523         if(is_array($contact) && intval($contact['forum']) != $community_page) {
2524                 q("update contact set forum = %d where id = %d",
2525                         intval($community_page),
2526                         intval($contact['id'])
2527                 );
2528                 $contact['forum'] = (string) $community_page;
2529         }
2530
2531
2532         // process any deleted entries
2533
2534         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
2535         if(is_array($del_entries) && count($del_entries) && $pass != 2) {
2536                 foreach($del_entries as $dentry) {
2537                         $deleted = false;
2538                         if(isset($dentry['attribs']['']['ref'])) {
2539                                 $uri = $dentry['attribs']['']['ref'];
2540                                 $deleted = true;
2541                                 if(isset($dentry['attribs']['']['when'])) {
2542                                         $when = $dentry['attribs']['']['when'];
2543                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
2544                                 }
2545                                 else
2546                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
2547                         }
2548                         if($deleted && is_array($contact)) {
2549                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN `contact` on `item`.`contact-id` = `contact`.`id`
2550                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
2551                                         dbesc($uri),
2552                                         intval($importer['uid']),
2553                                         intval($contact['id'])
2554                                 );
2555                                 if(count($r)) {
2556                                         $item = $r[0];
2557
2558                                         if(! $item['deleted'])
2559                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
2560
2561                                         if($item['object-type'] === ACTIVITY_OBJ_EVENT) {
2562                                                 logger("Deleting event ".$item['event-id'], LOGGER_DEBUG);
2563                                                 event_delete($item['event-id']);
2564                                         }
2565
2566                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2567                                                 $xo = parse_xml_string($item['object'],false);
2568                                                 $xt = parse_xml_string($item['target'],false);
2569                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
2570                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
2571                                                                 dbesc($xt->id),
2572                                                                 intval($importer['importer_uid'])
2573                                                         );
2574                                                         if(count($i)) {
2575
2576                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
2577
2578                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
2579                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
2580                                                                 $author_copy = (($item['origin']) ? true : false);
2581
2582                                                                 if($owner_remove && $author_copy)
2583                                                                         continue;
2584                                                                 if($author_remove || $owner_remove) {
2585                                                                         $tags = explode(',',$i[0]['tag']);
2586                                                                         $newtags = array();
2587                                                                         if(count($tags)) {
2588                                                                                 foreach($tags as $tag)
2589                                                                                         if(trim($tag) !== trim($xo->body))
2590                                                                                                 $newtags[] = trim($tag);
2591                                                                         }
2592                                                                         q("update item set tag = '%s' where id = %d",
2593                                                                                 dbesc(implode(',',$newtags)),
2594                                                                                 intval($i[0]['id'])
2595                                                                         );
2596                                                                         create_tags_from_item($i[0]['id']);
2597                                                                 }
2598                                                         }
2599                                                 }
2600                                         }
2601
2602                                         if($item['uri'] == $item['parent-uri']) {
2603                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2604                                                         `body` = '', `title` = ''
2605                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
2606                                                         dbesc($when),
2607                                                         dbesc(datetime_convert()),
2608                                                         dbesc($item['uri']),
2609                                                         intval($importer['uid'])
2610                                                 );
2611                                                 create_tags_from_itemuri($item['uri'], $importer['uid']);
2612                                                 create_files_from_itemuri($item['uri'], $importer['uid']);
2613                                                 update_thread_uri($item['uri'], $importer['uid']);
2614                                         }
2615                                         else {
2616                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2617                                                         `body` = '', `title` = ''
2618                                                         WHERE `uri` = '%s' AND `uid` = %d",
2619                                                         dbesc($when),
2620                                                         dbesc(datetime_convert()),
2621                                                         dbesc($uri),
2622                                                         intval($importer['uid'])
2623                                                 );
2624                                                 create_tags_from_itemuri($uri, $importer['uid']);
2625                                                 create_files_from_itemuri($uri, $importer['uid']);
2626                                                 if($item['last-child']) {
2627                                                         // ensure that last-child is set in case the comment that had it just got wiped.
2628                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2629                                                                 dbesc(datetime_convert()),
2630                                                                 dbesc($item['parent-uri']),
2631                                                                 intval($item['uid'])
2632                                                         );
2633                                                         // who is the last child now?
2634                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `moderated` = 0 AND `uid` = %d
2635                                                                 ORDER BY `created` DESC LIMIT 1",
2636                                                                         dbesc($item['parent-uri']),
2637                                                                         intval($importer['uid'])
2638                                                         );
2639                                                         if(count($r)) {
2640                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2641                                                                         intval($r[0]['id'])
2642                                                                 );
2643                                                         }
2644                                                 }
2645                                         }
2646                                 }
2647                         }
2648                 }
2649         }
2650
2651         // Now process the feed
2652
2653         if($feed->get_item_quantity()) {
2654
2655                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
2656
2657         // in inverse date order
2658                 if ($datedir)
2659                         $items = array_reverse($feed->get_items());
2660                 else
2661                         $items = $feed->get_items();
2662
2663
2664                 foreach($items as $item) {
2665
2666                         $is_reply = false;
2667                         $item_id = $item->get_id();
2668                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
2669                         if(isset($rawthread[0]['attribs']['']['ref'])) {
2670                                 $is_reply = true;
2671                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
2672                         }
2673
2674                         if(($is_reply) && is_array($contact)) {
2675
2676                                 if($pass == 1)
2677                                         continue;
2678
2679                                 // not allowed to post
2680
2681                                 if($contact['rel'] == CONTACT_IS_FOLLOWER)
2682                                         continue;
2683
2684
2685                                 // Have we seen it? If not, import it.
2686
2687                                 $item_id  = $item->get_id();
2688                                 $datarray = get_atom_elements($feed, $item, $contact);
2689
2690                                 if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2691                                         $datarray['author-name'] = $contact['name'];
2692                                 if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2693                                         $datarray['author-link'] = $contact['url'];
2694                                 if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2695                                         $datarray['author-avatar'] = $contact['thumb'];
2696
2697                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2698                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2699                                         continue;
2700                                 }
2701
2702                                 $force_parent = false;
2703                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2704                                         if($contact['network'] === NETWORK_OSTATUS)
2705                                                 $force_parent = true;
2706                                         if(strlen($datarray['title']))
2707                                                 unset($datarray['title']);
2708                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2709                                                 dbesc(datetime_convert()),
2710                                                 dbesc($parent_uri),
2711                                                 intval($importer['uid'])
2712                                         );
2713                                         $datarray['last-child'] = 1;
2714                                         update_thread_uri($parent_uri, $importer['uid']);
2715                                 }
2716
2717
2718                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2719                                         dbesc($item_id),
2720                                         intval($importer['uid'])
2721                                 );
2722
2723                                 // Update content if 'updated' changes
2724
2725                                 if(count($r)) {
2726                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2727
2728                                                 // do not accept (ignore) an earlier edit than one we currently have.
2729                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2730                                                         continue;
2731
2732                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2733                                                         dbesc($datarray['title']),
2734                                                         dbesc($datarray['body']),
2735                                                         dbesc($datarray['tag']),
2736                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2737                                                         dbesc(datetime_convert()),
2738                                                         dbesc($item_id),
2739                                                         intval($importer['uid'])
2740                                                 );
2741                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2742                                                 update_thread_uri($item_id, $importer['uid']);
2743                                         }
2744
2745                                         // update last-child if it changes
2746
2747                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2748                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
2749                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2750                                                         dbesc(datetime_convert()),
2751                                                         dbesc($parent_uri),
2752                                                         intval($importer['uid'])
2753                                                 );
2754                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
2755                                                         intval($allow[0]['data']),
2756                                                         dbesc(datetime_convert()),
2757                                                         dbesc($item_id),
2758                                                         intval($importer['uid'])
2759                                                 );
2760                                                 update_thread_uri($item_id, $importer['uid']);
2761                                         }
2762                                         continue;
2763                                 }
2764
2765
2766                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2767                                         // one way feed - no remote comment ability
2768                                         $datarray['last-child'] = 0;
2769                                 }
2770                                 $datarray['parent-uri'] = $parent_uri;
2771                                 $datarray['uid'] = $importer['uid'];
2772                                 $datarray['contact-id'] = $contact['id'];
2773                                 if(($datarray['verb'] === ACTIVITY_LIKE)
2774                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
2775                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
2776                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
2777                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
2778                                         $datarray['type'] = 'activity';
2779                                         $datarray['gravity'] = GRAVITY_LIKE;
2780                                         // only one like or dislike per person
2781                                         // splitted into two queries for performance issues
2782                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
2783                                                 intval($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                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
2792                                                 intval($datarray['uid']),
2793                                                 intval($datarray['contact-id']),
2794                                                 dbesc($datarray['verb']),
2795                                                 dbesc($parent_uri)
2796                                         );
2797                                         if($r && count($r))
2798                                                 continue;
2799                                 }
2800
2801                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2802                                         $xo = parse_xml_string($datarray['object'],false);
2803                                         $xt = parse_xml_string($datarray['target'],false);
2804
2805                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
2806                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
2807                                                         dbesc($xt->id),
2808                                                         intval($importer['importer_uid'])
2809                                                 );
2810                                                 if(! count($r))
2811                                                         continue;
2812
2813                                                 // extract tag, if not duplicate, add to parent item
2814                                                 if($xo->id && $xo->content) {
2815                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
2816                                                         if(! (stristr($r[0]['tag'],$newtag))) {
2817                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
2818                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . $newtag),
2819                                                                         intval($r[0]['id'])
2820                                                                 );
2821                                                                 create_tags_from_item($r[0]['id']);
2822                                                         }
2823                                                 }
2824                                         }
2825                                 }
2826
2827                                 $r = item_store($datarray,$force_parent);
2828                                 continue;
2829                         }
2830
2831                         else {
2832
2833                                 // Head post of a conversation. Have we seen it? If not, import it.
2834
2835                                 $item_id  = $item->get_id();
2836
2837                                 $datarray = get_atom_elements($feed, $item, $contact);
2838
2839                                 if(is_array($contact)) {
2840                                         if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
2841                                                 $datarray['author-name'] = $contact['name'];
2842                                         if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
2843                                                 $datarray['author-link'] = $contact['url'];
2844                                         if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
2845                                                 $datarray['author-avatar'] = $contact['thumb'];
2846                                 }
2847
2848                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
2849                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
2850                                         continue;
2851                                 }
2852
2853                                 // special handling for events
2854
2855                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
2856                                         $ev = bbtoevent($datarray['body']);
2857                                         if((x($ev,'desc') || x($ev,'summary')) && x($ev,'start')) {
2858                                                 $ev['uid'] = $importer['uid'];
2859                                                 $ev['uri'] = $item_id;
2860                                                 $ev['edited'] = $datarray['edited'];
2861                                                 $ev['private'] = $datarray['private'];
2862                                                 $ev['guid'] = $datarray['guid'];
2863
2864                                                 if(is_array($contact))
2865                                                         $ev['cid'] = $contact['id'];
2866                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2867                                                         dbesc($item_id),
2868                                                         intval($importer['uid'])
2869                                                 );
2870                                                 if(count($r))
2871                                                         $ev['id'] = $r[0]['id'];
2872                                                 $xyz = event_store($ev);
2873                                                 continue;
2874                                         }
2875                                 }
2876
2877                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
2878                                         if(strlen($datarray['title']))
2879                                                 unset($datarray['title']);
2880                                         $datarray['last-child'] = 1;
2881                                 }
2882
2883
2884                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2885                                         dbesc($item_id),
2886                                         intval($importer['uid'])
2887                                 );
2888
2889                                 // Update content if 'updated' changes
2890
2891                                 if(count($r)) {
2892                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
2893
2894                                                 // do not accept (ignore) an earlier edit than one we currently have.
2895                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
2896                                                         continue;
2897
2898                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2899                                                         dbesc($datarray['title']),
2900                                                         dbesc($datarray['body']),
2901                                                         dbesc($datarray['tag']),
2902                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2903                                                         dbesc(datetime_convert()),
2904                                                         dbesc($item_id),
2905                                                         intval($importer['uid'])
2906                                                 );
2907                                                 create_tags_from_itemuri($item_id, $importer['uid']);
2908                                                 update_thread_uri($item_id, $importer['uid']);
2909                                         }
2910
2911                                         // update last-child if it changes
2912
2913                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2914                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
2915                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
2916                                                         intval($allow[0]['data']),
2917                                                         dbesc(datetime_convert()),
2918                                                         dbesc($item_id),
2919                                                         intval($importer['uid'])
2920                                                 );
2921                                                 update_thread_uri($item_id, $importer['uid']);
2922                                         }
2923                                         continue;
2924                                 }
2925
2926                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
2927                                         logger('consume-feed: New follower');
2928                                         new_follower($importer,$contact,$datarray,$item);
2929                                         return;
2930                                 }
2931                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
2932                                         lose_follower($importer,$contact,$datarray,$item);
2933                                         return;
2934                                 }
2935
2936                                 if(activity_match($datarray['verb'],ACTIVITY_REQ_FRIEND)) {
2937                                         logger('consume-feed: New friend request');
2938                                         new_follower($importer,$contact,$datarray,$item,true);
2939                                         return;
2940                                 }
2941                                 if(activity_match($datarray['verb'],ACTIVITY_UNFRIEND))  {
2942                                         lose_sharer($importer,$contact,$datarray,$item);
2943                                         return;
2944                                 }
2945
2946
2947                                 if(! is_array($contact))
2948                                         return;
2949
2950
2951                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
2952                                                 // one way feed - no remote comment ability
2953                                                 $datarray['last-child'] = 0;
2954                                 }
2955                                 if($contact['network'] === NETWORK_FEED)
2956                                         $datarray['private'] = 2;
2957
2958                                 $datarray['parent-uri'] = $item_id;
2959                                 $datarray['uid'] = $importer['uid'];
2960                                 $datarray['contact-id'] = $contact['id'];
2961
2962                                 if(! link_compare($datarray['owner-link'],$contact['url'])) {
2963                                         // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
2964                                         // but otherwise there's a possible data mixup on the sender's system.
2965                                         // the tgroup delivery code called from item_store will correct it if it's a forum,
2966                                         // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
2967                                         logger('consume_feed: Correcting item owner.', LOGGER_DEBUG);
2968                                         $datarray['owner-name']   = $contact['name'];
2969                                         $datarray['owner-link']   = $contact['url'];
2970                                         $datarray['owner-avatar'] = $contact['thumb'];
2971                                 }
2972
2973                                 // We've allowed "followers" to reach this point so we can decide if they are
2974                                 // posting an @-tag delivery, which followers are allowed to do for certain
2975                                 // page types. Now that we've parsed the post, let's check if it is legit. Otherwise ignore it.
2976
2977                                 if(($contact['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['uid'],$datarray)))
2978                                         continue;
2979
2980                                 // This is my contact on another system, but it's really me.
2981                                 // Turn this into a wall post.
2982                                 $notify = item_is_remote_self($contact, $datarray);
2983
2984                                 $r = item_store($datarray, false, $notify);
2985                                 logger('Stored - Contact '.$contact['url'].' Notify '.$notify.' return '.$r.' Item '.print_r($datarray, true), LOGGER_DEBUG);
2986                                 continue;
2987
2988                         }
2989                 }
2990         }
2991 }
2992
2993 function item_is_remote_self($contact, &$datarray) {
2994         $a = get_app();
2995
2996         if (!$contact['remote_self'])
2997                 return false;
2998
2999         // Prevent the forwarding of posts that are forwarded
3000         if ($datarray["extid"] == NETWORK_DFRN)
3001                 return false;
3002
3003         // Prevent to forward already forwarded posts
3004         if ($datarray["app"] == $a->get_hostname())
3005                 return false;
3006
3007         // Only forward posts
3008         if ($datarray["verb"] != ACTIVITY_POST)
3009                 return false;
3010
3011         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
3012                 return false;
3013
3014         $datarray2 = $datarray;
3015         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
3016         if ($contact['remote_self'] == 2) {
3017                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
3018                         intval($contact['uid']));
3019                 if (count($r)) {
3020                         $datarray['contact-id'] = $r[0]["id"];
3021
3022                         $datarray['owner-name'] = $r[0]["name"];
3023                         $datarray['owner-link'] = $r[0]["url"];
3024                         $datarray['owner-avatar'] = $r[0]["thumb"];
3025
3026                         $datarray['author-name']   = $datarray['owner-name'];
3027                         $datarray['author-link']   = $datarray['owner-link'];
3028                         $datarray['author-avatar'] = $datarray['owner-avatar'];
3029                 }
3030
3031                 if ($contact['network'] != NETWORK_FEED) {
3032                         $datarray["guid"] = get_guid(32);
3033                         unset($datarray["plink"]);
3034                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
3035                         $datarray["parent-uri"] = $datarray["uri"];
3036                         $datarray["extid"] = $contact['network'];
3037                         $urlpart = parse_url($datarray2['author-link']);
3038                         $datarray["app"] = $urlpart["host"];
3039                 } else
3040                         $datarray['private'] = 0;
3041         }
3042
3043         if ($contact['network'] != NETWORK_FEED) {
3044                 // Store the original post
3045                 $r = item_store($datarray2, false, false);
3046                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
3047         } else
3048                 $datarray["app"] = "Feed";
3049
3050         return true;
3051 }
3052
3053 function local_delivery($importer,$data) {
3054         $a = get_app();
3055
3056         logger(__function__, LOGGER_TRACE);
3057
3058         if($importer['readonly']) {
3059                 // We aren't receiving stuff from this person. But we will quietly ignore them
3060                 // rather than a blatant "go away" message.
3061                 logger('local_delivery: ignoring');
3062                 return 0;
3063                 //NOTREACHED
3064         }
3065
3066         // Consume notification feed. This may differ from consuming a public feed in several ways
3067         // - might contain email or friend suggestions
3068         // - might contain remote followup to our message
3069         //              - in which case we need to accept it and then notify other conversants
3070         // - we may need to send various email notifications
3071
3072         $feed = new SimplePie();
3073         $feed->set_raw_data($data);
3074         $feed->enable_order_by_date(false);
3075         $feed->init();
3076
3077
3078         if($feed->error())
3079                 logger('local_delivery: Error parsing XML: ' . $feed->error());
3080
3081
3082         // Check at the feed level for updated contact name and/or photo
3083
3084         $name_updated  = '';
3085         $new_name = '';
3086         $photo_timestamp = '';
3087         $photo_url = '';
3088         $contact_updated = '';
3089
3090
3091         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
3092
3093 // Fallback should not be needed here. If it isn't DFRN it won't have DFRN updated tags
3094 //      if(! $rawtags)
3095 //              $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
3096
3097         if($rawtags) {
3098                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
3099                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
3100                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
3101                         $new_name = $elems['name'][0]['data'];
3102
3103                         // Manually checking for changed contact names
3104                         if (($new_name != $importer['name']) AND ($new_name != "") AND ($name_updated <= $importer['name-date'])) {
3105                                 $name_updated = date("c");
3106                                 $photo_timestamp = date("c");
3107                         }
3108                 }
3109                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
3110                         if ($photo_timestamp == "")
3111                                 $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
3112                         $photo_url = $elems['link'][0]['attribs']['']['href'];
3113                 }
3114         }
3115
3116         if(($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $importer['avatar-date'])) {
3117
3118                 $contact_updated = $photo_timestamp;
3119
3120                 logger('local_delivery: Updating photo for ' . $importer['name']);
3121                 require_once("include/Photo.php");
3122                 $photo_failure = false;
3123                 $have_photo = false;
3124
3125                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
3126                         intval($importer['id']),
3127                         intval($importer['importer_uid'])
3128                 );
3129                 if(count($r)) {
3130                         $resource_id = $r[0]['resource-id'];
3131                         $have_photo = true;
3132                 }
3133                 else {
3134                         $resource_id = photo_new_resource();
3135                 }
3136
3137                 $img_str = fetch_url($photo_url,true);
3138                 // guess mimetype from headers or filename
3139                 $type = guess_image_type($photo_url,true);
3140
3141
3142                 $img = new Photo($img_str, $type);
3143                 if($img->is_valid()) {
3144                         if($have_photo) {
3145                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
3146                                         dbesc($resource_id),
3147                                         intval($importer['id']),
3148                                         intval($importer['importer_uid'])
3149                                 );
3150                         }
3151
3152                         $img->scaleImageSquare(175);
3153
3154                         $hash = $resource_id;
3155                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 4);
3156
3157                         $img->scaleImage(80);
3158                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 5);
3159
3160                         $img->scaleImage(48);
3161                         $r = $img->store($importer['importer_uid'], $importer['id'], $hash, basename($photo_url), 'Contact Photos', 6);
3162
3163                         $a = get_app();
3164
3165                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
3166                                 WHERE `uid` = %d AND `id` = %d",
3167                                 dbesc(datetime_convert()),
3168                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.'.$img->getExt()),
3169                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.'.$img->getExt()),
3170                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.'.$img->getExt()),
3171                                 intval($importer['importer_uid']),
3172                                 intval($importer['id'])
3173                         );
3174                 }
3175         }
3176
3177         if(($name_updated) && (strlen($new_name)) && ($name_updated > $importer['name-date'])) {
3178                 if ($name_updated > $contact_updated)
3179                         $contact_updated = $name_updated;
3180
3181                 $r = q("select * from contact where uid = %d and id = %d limit 1",
3182                         intval($importer['importer_uid']),
3183                         intval($importer['id'])
3184                 );
3185
3186                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d",
3187                         dbesc(notags(trim($new_name))),
3188                         dbesc(datetime_convert()),
3189                         intval($importer['importer_uid']),
3190                         intval($importer['id'])
3191                 );
3192
3193                 // do our best to update the name on content items
3194
3195                 if(count($r)) {
3196                         q("update item set `author-name` = '%s' where `author-name` = '%s' and `author-link` = '%s' and uid = %d",
3197                                 dbesc(notags(trim($new_name))),
3198                                 dbesc($r[0]['name']),
3199                                 dbesc($r[0]['url']),
3200                                 intval($importer['importer_uid'])
3201                         );
3202                 }
3203         }
3204
3205         if ($contact_updated AND $new_name AND $photo_url)
3206                 poco_check($importer['url'], $new_name, NETWORK_DFRN, $photo_url, "", "", "", "", "", $contact_updated, 2, $importer['id'], $importer['importer_uid']);
3207
3208         // Currently unsupported - needs a lot of work
3209         $reloc = $feed->get_feed_tags( NAMESPACE_DFRN, 'relocate' );
3210         if(isset($reloc[0]['child'][NAMESPACE_DFRN])) {
3211                 $base = $reloc[0]['child'][NAMESPACE_DFRN];
3212                 $newloc = array();
3213                 $newloc['uid'] = $importer['importer_uid'];
3214                 $newloc['cid'] = $importer['id'];
3215                 $newloc['name'] = notags(unxmlify($base['name'][0]['data']));
3216                 $newloc['photo'] = notags(unxmlify($base['photo'][0]['data']));
3217                 $newloc['thumb'] = notags(unxmlify($base['thumb'][0]['data']));
3218                 $newloc['micro'] = notags(unxmlify($base['micro'][0]['data']));
3219                 $newloc['url'] = notags(unxmlify($base['url'][0]['data']));
3220                 $newloc['request'] = notags(unxmlify($base['request'][0]['data']));
3221                 $newloc['confirm'] = notags(unxmlify($base['confirm'][0]['data']));
3222                 $newloc['notify'] = notags(unxmlify($base['notify'][0]['data']));
3223                 $newloc['poll'] = notags(unxmlify($base['poll'][0]['data']));
3224                 $newloc['sitepubkey'] = notags(unxmlify($base['sitepubkey'][0]['data']));
3225                 /** relocated user must have original key pair */
3226                 /*$newloc['pubkey'] = notags(unxmlify($base['pubkey'][0]['data']));
3227                 $newloc['prvkey'] = notags(unxmlify($base['prvkey'][0]['data']));*/
3228
3229                 logger("items:relocate contact ".print_r($newloc, true).print_r($importer, true), LOGGER_DEBUG);
3230
3231                 // update contact
3232                 $r = q("SELECT photo, url FROM contact WHERE id=%d AND uid=%d;",
3233                         intval($importer['id']),
3234                         intval($importer['importer_uid']));
3235                 if ($r === false)
3236                         return 1;
3237                 $old = $r[0];
3238
3239                 $x = q("UPDATE contact SET
3240                                         name = '%s',
3241                                         photo = '%s',
3242                                         thumb = '%s',
3243                                         micro = '%s',
3244                                         url = '%s',
3245                                         nurl = '%s',
3246                                         request = '%s',
3247                                         confirm = '%s',
3248                                         notify = '%s',
3249                                         poll = '%s',
3250                                         `site-pubkey` = '%s'
3251                         WHERE id=%d AND uid=%d;",
3252                                         dbesc($newloc['name']),
3253                                         dbesc($newloc['photo']),
3254                                         dbesc($newloc['thumb']),
3255                                         dbesc($newloc['micro']),
3256                                         dbesc($newloc['url']),
3257                                         dbesc(normalise_link($newloc['url'])),
3258                                         dbesc($newloc['request']),
3259                                         dbesc($newloc['confirm']),
3260                                         dbesc($newloc['notify']),
3261                                         dbesc($newloc['poll']),
3262                                         dbesc($newloc['sitepubkey']),
3263                                         intval($importer['id']),
3264                                         intval($importer['importer_uid']));
3265
3266                 if ($x === false)
3267                         return 1;
3268                 // update items
3269                 $fields = array(
3270                         'owner-link' => array($old['url'], $newloc['url']),
3271                         'author-link' => array($old['url'], $newloc['url']),
3272                         'owner-avatar' => array($old['photo'], $newloc['photo']),
3273                         'author-avatar' => array($old['photo'], $newloc['photo']),
3274                         );
3275                 foreach ($fields as $n=>$f){
3276                         $x = q("UPDATE `item` SET `%s`='%s' WHERE `%s`='%s' AND uid=%d",
3277                                         $n, dbesc($f[1]),
3278                                         $n, dbesc($f[0]),
3279                                         intval($importer['importer_uid']));
3280                                 if ($x === false)
3281                                         return 1;
3282                         }
3283
3284                 // TODO
3285                 // merge with current record, current contents have priority
3286                 // update record, set url-updated
3287                 // update profile photos
3288                 // schedule a scan?
3289                 return 0;
3290         }
3291
3292
3293         // handle friend suggestion notification
3294
3295         $sugg = $feed->get_feed_tags( NAMESPACE_DFRN, 'suggest' );
3296         if(isset($sugg[0]['child'][NAMESPACE_DFRN])) {
3297                 $base = $sugg[0]['child'][NAMESPACE_DFRN];
3298                 $fsugg = array();
3299                 $fsugg['uid'] = $importer['importer_uid'];
3300                 $fsugg['cid'] = $importer['id'];
3301                 $fsugg['name'] = notags(unxmlify($base['name'][0]['data']));
3302                 $fsugg['photo'] = notags(unxmlify($base['photo'][0]['data']));
3303                 $fsugg['url'] = notags(unxmlify($base['url'][0]['data']));
3304                 $fsugg['request'] = notags(unxmlify($base['request'][0]['data']));
3305                 $fsugg['body'] = escape_tags(unxmlify($base['note'][0]['data']));
3306
3307                 // Does our member already have a friend matching this description?
3308
3309                 $r = q("SELECT * FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
3310                         dbesc($fsugg['name']),
3311                         dbesc(normalise_link($fsugg['url'])),
3312                         intval($fsugg['uid'])
3313                 );
3314                 if(count($r))
3315                         return 0;
3316
3317                 // Do we already have an fcontact record for this person?
3318
3319                 $fid = 0;
3320                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3321                         dbesc($fsugg['url']),
3322                         dbesc($fsugg['name']),
3323                         dbesc($fsugg['request'])
3324                 );
3325                 if(count($r)) {
3326                         $fid = $r[0]['id'];
3327
3328                         // OK, we do. Do we already have an introduction for this person ?
3329                         $r = q("select id from intro where uid = %d and fid = %d limit 1",
3330                                 intval($fsugg['uid']),
3331                                 intval($fid)
3332                         );
3333                         if(count($r))
3334                                 return 0;
3335                 }
3336                 if(! $fid)
3337                         $r = q("INSERT INTO `fcontact` ( `name`,`url`,`photo`,`request` ) VALUES ( '%s', '%s', '%s', '%s' ) ",
3338                         dbesc($fsugg['name']),
3339                         dbesc($fsugg['url']),
3340                         dbesc($fsugg['photo']),
3341                         dbesc($fsugg['request'])
3342                 );
3343                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
3344                         dbesc($fsugg['url']),
3345                         dbesc($fsugg['name']),
3346                         dbesc($fsugg['request'])
3347                 );
3348                 if(count($r)) {
3349                         $fid = $r[0]['id'];
3350                 }
3351                 // database record did not get created. Quietly give up.
3352                 else
3353                         return 0;
3354
3355
3356                 $hash = random_string();
3357
3358                 $r = q("INSERT INTO `intro` ( `uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked` )
3359                         VALUES( %d, %d, %d, '%s', '%s', '%s', %d )",
3360                         intval($fsugg['uid']),
3361                         intval($fid),
3362                         intval($fsugg['cid']),
3363                         dbesc($fsugg['body']),
3364                         dbesc($hash),
3365                         dbesc(datetime_convert()),
3366                         intval(0)
3367                 );
3368
3369                 notification(array(
3370                         'type'         => NOTIFY_SUGGEST,
3371                         'notify_flags' => $importer['notify-flags'],
3372                         'language'     => $importer['language'],
3373                         'to_name'      => $importer['username'],
3374                         'to_email'     => $importer['email'],
3375                         'uid'          => $importer['importer_uid'],
3376                         'item'         => $fsugg,
3377                         'link'         => $a->get_baseurl() . '/notifications/intros',
3378                         'source_name'  => $importer['name'],
3379                         'source_link'  => $importer['url'],
3380                         'source_photo' => $importer['photo'],
3381                         'verb'         => ACTIVITY_REQ_FRIEND,
3382                         'otype'        => 'intro'
3383                 ));
3384
3385                 return 0;
3386         }
3387
3388         $ismail = false;
3389
3390         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
3391         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
3392
3393                 logger('local_delivery: private message received');
3394
3395                 $ismail = true;
3396                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
3397
3398                 $msg = array();
3399                 $msg['uid'] = $importer['importer_uid'];
3400                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
3401                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
3402                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
3403                 $msg['contact-id'] = $importer['id'];
3404                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
3405                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
3406                 $msg['seen'] = 0;
3407                 $msg['replied'] = 0;
3408                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
3409                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
3410                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
3411
3412                 dbesc_array($msg);
3413
3414                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
3415                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
3416
3417                 // send notifications.
3418
3419                 require_once('include/enotify.php');
3420
3421                 $notif_params = array(
3422                         'type' => NOTIFY_MAIL,
3423                         'notify_flags' => $importer['notify-flags'],
3424                         'language' => $importer['language'],
3425                         'to_name' => $importer['username'],
3426                         'to_email' => $importer['email'],
3427                         'uid' => $importer['importer_uid'],
3428                         'item' => $msg,
3429                         'source_name' => $msg['from-name'],
3430                         'source_link' => $importer['url'],
3431                         'source_photo' => $importer['thumb'],
3432                         'verb' => ACTIVITY_POST,
3433                         'otype' => 'mail'
3434                 );
3435
3436                 notification($notif_params);
3437                 return 0;
3438
3439                 // NOTREACHED
3440         }
3441
3442         $community_page = 0;
3443         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
3444         if($rawtags) {
3445                 $community_page = intval($rawtags[0]['data']);
3446         }
3447         if(intval($importer['forum']) != $community_page) {
3448                 q("update contact set forum = %d where id = %d",
3449                         intval($community_page),
3450                         intval($importer['id'])
3451                 );
3452                 $importer['forum'] = (string) $community_page;
3453         }
3454
3455         logger('local_delivery: feed item count = ' . $feed->get_item_quantity());
3456
3457         // process any deleted entries
3458
3459         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
3460         if(is_array($del_entries) && count($del_entries)) {
3461                 foreach($del_entries as $dentry) {
3462                         $deleted = false;
3463                         if(isset($dentry['attribs']['']['ref'])) {
3464                                 $uri = $dentry['attribs']['']['ref'];
3465                                 $deleted = true;
3466                                 if(isset($dentry['attribs']['']['when'])) {
3467                                         $when = $dentry['attribs']['']['when'];
3468                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
3469                                 }
3470                                 else
3471                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
3472                         }
3473                         if($deleted) {
3474
3475                                 // check for relayed deletes to our conversation
3476
3477                                 $is_reply = false;
3478                                 $r = q("select * from item where uri = '%s' and uid = %d limit 1",
3479                                         dbesc($uri),
3480                                         intval($importer['importer_uid'])
3481                                 );
3482                                 if(count($r)) {
3483                                         $parent_uri = $r[0]['parent-uri'];
3484                                         if($r[0]['id'] != $r[0]['parent'])
3485                                                 $is_reply = true;
3486                                 }
3487
3488                                 if($is_reply) {
3489                                         $community = false;
3490
3491                                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3492                                                 $sql_extra = '';
3493                                                 $community = true;
3494                                                 logger('local_delivery: possible community delete');
3495                                         }
3496                                         else
3497                                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3498
3499                                         // was the top-level post for this reply written by somebody on this site?
3500                                         // Specifically, the recipient?
3501
3502                                         $is_a_remote_delete = false;
3503
3504                                         // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3505                                         $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3506                                                 `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3507                                                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3508                                                 WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3509                                                 AND `item`.`uid` = %d
3510                                                 $sql_extra
3511                                                 LIMIT 1",
3512                                                 dbesc($parent_uri),
3513                                                 dbesc($parent_uri),
3514                                                 dbesc($parent_uri),
3515                                                 intval($importer['importer_uid'])
3516                                         );
3517                                         if($r && count($r))
3518                                                 $is_a_remote_delete = true;
3519
3520                                         // Does this have the characteristics of a community or private group comment?
3521                                         // If it's a reply to a wall post on a community/prvgroup page it's a
3522                                         // valid community comment. Also forum_mode makes it valid for sure.
3523                                         // If neither, it's not.
3524
3525                                         if($is_a_remote_delete && $community) {
3526                                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3527                                                         $is_a_remote_delete = false;
3528                                                         logger('local_delivery: not a community delete');
3529                                                 }
3530                                         }
3531
3532                                         if($is_a_remote_delete) {
3533                                                 logger('local_delivery: received remote delete');
3534                                         }
3535                                 }
3536
3537                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN contact on `item`.`contact-id` = `contact`.`id`
3538                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
3539                                         dbesc($uri),
3540                                         intval($importer['importer_uid']),
3541                                         intval($importer['id'])
3542                                 );
3543
3544                                 if(count($r)) {
3545                                         $item = $r[0];
3546
3547                                         if($item['deleted'])
3548                                                 continue;
3549
3550                                         logger('local_delivery: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
3551
3552                                         if($item['object-type'] === ACTIVITY_OBJ_EVENT) {
3553                                                 logger("Deleting event ".$item['event-id'], LOGGER_DEBUG);
3554                                                 event_delete($item['event-id']);
3555                                         }
3556
3557                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3558                                                 $xo = parse_xml_string($item['object'],false);
3559                                                 $xt = parse_xml_string($item['target'],false);
3560
3561                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
3562                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
3563                                                                 dbesc($xt->id),
3564                                                                 intval($importer['importer_uid'])
3565                                                         );
3566                                                         if(count($i)) {
3567
3568                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
3569
3570                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
3571                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
3572                                                                 $author_copy = (($item['origin']) ? true : false);
3573
3574                                                                 if($owner_remove && $author_copy)
3575                                                                         continue;
3576                                                                 if($author_remove || $owner_remove) {
3577                                                                         $tags = explode(',',$i[0]['tag']);
3578                                                                         $newtags = array();
3579                                                                         if(count($tags)) {
3580                                                                                 foreach($tags as $tag)
3581                                                                                         if(trim($tag) !== trim($xo->body))
3582                                                                                                 $newtags[] = trim($tag);
3583                                                                         }
3584                                                                         q("update item set tag = '%s' where id = %d",
3585                                                                                 dbesc(implode(',',$newtags)),
3586                                                                                 intval($i[0]['id'])
3587                                                                         );
3588                                                                         create_tags_from_item($i[0]['id']);
3589                                                                 }
3590                                                         }
3591                                                 }
3592                                         }
3593
3594                                         if($item['uri'] == $item['parent-uri']) {
3595                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3596                                                         `body` = '', `title` = ''
3597                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
3598                                                         dbesc($when),
3599                                                         dbesc(datetime_convert()),
3600                                                         dbesc($item['uri']),
3601                                                         intval($importer['importer_uid'])
3602                                                 );
3603                                                 create_tags_from_itemuri($item['uri'], $importer['importer_uid']);
3604                                                 create_files_from_itemuri($item['uri'], $importer['importer_uid']);
3605                                                 update_thread_uri($item['uri'], $importer['importer_uid']);
3606                                         }
3607                                         else {
3608                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
3609                                                         `body` = '', `title` = ''
3610                                                         WHERE `uri` = '%s' AND `uid` = %d",
3611                                                         dbesc($when),
3612                                                         dbesc(datetime_convert()),
3613                                                         dbesc($uri),
3614                                                         intval($importer['importer_uid'])
3615                                                 );
3616                                                 create_tags_from_itemuri($uri, $importer['importer_uid']);
3617                                                 create_files_from_itemuri($uri, $importer['importer_uid']);
3618                                                 update_thread_uri($uri, $importer['importer_uid']);
3619                                                 if($item['last-child']) {
3620                                                         // ensure that last-child is set in case the comment that had it just got wiped.
3621                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
3622                                                                 dbesc(datetime_convert()),
3623                                                                 dbesc($item['parent-uri']),
3624                                                                 intval($item['uid'])
3625                                                         );
3626                                                         // who is the last child now?
3627                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
3628                                                                 ORDER BY `created` DESC LIMIT 1",
3629                                                                         dbesc($item['parent-uri']),
3630                                                                         intval($importer['importer_uid'])
3631                                                         );
3632                                                         if(count($r)) {
3633                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
3634                                                                         intval($r[0]['id'])
3635                                                                 );
3636                                                         }
3637                                                 }
3638                                                 // if this is a relayed delete, propagate it to other recipients
3639
3640                                                 if($is_a_remote_delete)
3641                                                         proc_run('php',"include/notifier.php","drop",$item['id']);
3642                                         }
3643                                 }
3644                         }
3645                 }
3646         }
3647
3648
3649         foreach($feed->get_items() as $item) {
3650
3651                 $is_reply = false;
3652                 $item_id = $item->get_id();
3653                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
3654                 if(isset($rawthread[0]['attribs']['']['ref'])) {
3655                         $is_reply = true;
3656                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
3657                 }
3658
3659                 if($is_reply) {
3660                         $community = false;
3661
3662                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
3663                                 $sql_extra = '';
3664                                 $community = true;
3665                                 logger('local_delivery: possible community reply');
3666                         }
3667                         else
3668                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
3669
3670                         // was the top-level post for this reply written by somebody on this site?
3671                         // Specifically, the recipient?
3672
3673                         $is_a_remote_comment = false;
3674                         $top_uri = $parent_uri;
3675
3676                         $r = q("select `item`.`parent-uri` from `item`
3677                                 WHERE `item`.`uri` = '%s'
3678                                 LIMIT 1",
3679                                 dbesc($parent_uri)
3680                         );
3681                         if($r && count($r)) {
3682                                 $top_uri = $r[0]['parent-uri'];
3683
3684                                 // POSSIBLE CLEANUP --> Why select so many fields when only forum_mode and wall are used?
3685                                 $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
3686                                         `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
3687                                         INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
3688                                         WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' or `item`.`thr-parent` = '%s')
3689                                         AND `item`.`uid` = %d
3690                                         $sql_extra
3691                                         LIMIT 1",
3692                                         dbesc($top_uri),
3693                                         dbesc($top_uri),
3694                                         dbesc($top_uri),
3695                                         intval($importer['importer_uid'])
3696                                 );
3697                                 if($r && count($r))
3698                                         $is_a_remote_comment = true;
3699                         }
3700
3701                         // Does this have the characteristics of a community or private group comment?
3702                         // If it's a reply to a wall post on a community/prvgroup page it's a
3703                         // valid community comment. Also forum_mode makes it valid for sure.
3704                         // If neither, it's not.
3705
3706                         if($is_a_remote_comment && $community) {
3707                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
3708                                         $is_a_remote_comment = false;
3709                                         logger('local_delivery: not a community reply');
3710                                 }
3711                         }
3712
3713                         if($is_a_remote_comment) {
3714                                 logger('local_delivery: received remote comment');
3715                                 $is_like = false;
3716                                 // remote reply to our post. Import and then notify everybody else.
3717
3718                                 $datarray = get_atom_elements($feed, $item);
3719
3720                                 $r = q("SELECT `id`, `uid`, `last-child`, `edited`, `body`  FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3721                                         dbesc($item_id),
3722                                         intval($importer['importer_uid'])
3723                                 );
3724
3725                                 // Update content if 'updated' changes
3726
3727                                 if(count($r)) {
3728                                         $iid = $r[0]['id'];
3729                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3730
3731                                                 // do not accept (ignore) an earlier edit than one we currently have.
3732                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3733                                                         continue;
3734
3735                                                 logger('received updated comment' , LOGGER_DEBUG);
3736                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3737                                                         dbesc($datarray['title']),
3738                                                         dbesc($datarray['body']),
3739                                                         dbesc($datarray['tag']),
3740                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3741                                                         dbesc(datetime_convert()),
3742                                                         dbesc($item_id),
3743                                                         intval($importer['importer_uid'])
3744                                                 );
3745                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3746
3747                                                 proc_run('php',"include/notifier.php","comment-import",$iid);
3748
3749                                         }
3750
3751                                         continue;
3752                                 }
3753
3754
3755
3756                                 $own = q("select name,url,thumb from contact where uid = %d and self = 1 limit 1",
3757                                         intval($importer['importer_uid'])
3758                                 );
3759
3760
3761                                 $datarray['type'] = 'remote-comment';
3762                                 $datarray['wall'] = 1;
3763                                 $datarray['parent-uri'] = $parent_uri;
3764                                 $datarray['uid'] = $importer['importer_uid'];
3765                                 $datarray['owner-name'] = $own[0]['name'];
3766                                 $datarray['owner-link'] = $own[0]['url'];
3767                                 $datarray['owner-avatar'] = $own[0]['thumb'];
3768                                 $datarray['contact-id'] = $importer['id'];
3769
3770                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3771                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3772                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3773                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3774                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3775                                         $is_like = true;
3776                                         $datarray['type'] = 'activity';
3777                                         $datarray['gravity'] = GRAVITY_LIKE;
3778                                         $datarray['last-child'] = 0;
3779                                         // only one like or dislike per person
3780                                         // splitted into two queries for performance issues
3781                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`parent-uri` = '%s') and deleted = 0 limit 1",
3782                                                 intval($datarray['uid']),
3783                                                 intval($datarray['contact-id']),
3784                                                 dbesc($datarray['verb']),
3785                                                 dbesc($datarray['parent-uri'])
3786
3787                                         );
3788                                         if($r && count($r))
3789                                                 continue;
3790
3791                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb = '%s' and (`thr-parent` = '%s') and deleted = 0 limit 1",
3792                                                 intval($datarray['uid']),
3793                                                 intval($datarray['contact-id']),
3794                                                 dbesc($datarray['verb']),
3795                                                 dbesc($datarray['parent-uri'])
3796
3797                                         );
3798                                         if($r && count($r))
3799                                                 continue;
3800                                 }
3801
3802                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3803
3804                                         $xo = parse_xml_string($datarray['object'],false);
3805                                         $xt = parse_xml_string($datarray['target'],false);
3806
3807                                         if(($xt->type == ACTIVITY_OBJ_NOTE) && ($xt->id)) {
3808
3809                                                 // fetch the parent item
3810
3811                                                 $tagp = q("select * from item where uri = '%s' and uid = %d limit 1",
3812                                                         dbesc($xt->id),
3813                                                         intval($importer['importer_uid'])
3814                                                 );
3815                                                 if(! count($tagp))
3816                                                         continue;
3817
3818                                                 // extract tag, if not duplicate, and this user allows tags, add to parent item
3819
3820                                                 if($xo->id && $xo->content) {
3821                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
3822                                                         if(! (stristr($tagp[0]['tag'],$newtag))) {
3823                                                                 $i = q("SELECT `blocktags` FROM `user` where `uid` = %d LIMIT 1",
3824                                                                         intval($importer['importer_uid'])
3825                                                                 );
3826                                                                 if(count($i) && ! intval($i[0]['blocktags'])) {
3827                                                                         q("UPDATE item SET tag = '%s', `edited` = '%s', `changed` = '%s' WHERE id = %d",
3828                                                                                 dbesc($tagp[0]['tag'] . (strlen($tagp[0]['tag']) ? ',' : '') . $newtag),
3829                                                                                 intval($tagp[0]['id']),
3830                                                                                 dbesc(datetime_convert()),
3831                                                                                 dbesc(datetime_convert())
3832                                                                         );
3833                                                                         create_tags_from_item($tagp[0]['id']);
3834                                                                 }
3835                                                         }
3836                                                 }
3837                                         }
3838                                 }
3839
3840
3841                                 $posted_id = item_store($datarray);
3842                                 $parent = 0;
3843
3844                                 if($posted_id) {
3845
3846                                         $datarray["id"] = $posted_id;
3847
3848                                         $r = q("SELECT `parent`, `parent-uri` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3849                                                 intval($posted_id),
3850                                                 intval($importer['importer_uid'])
3851                                         );
3852                                         if(count($r)) {
3853                                                 $parent = $r[0]['parent'];
3854                                                 $parent_uri = $r[0]['parent-uri'];
3855                                         }
3856
3857                                         if(! $is_like) {
3858                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
3859                                                         dbesc(datetime_convert()),
3860                                                         intval($importer['importer_uid']),
3861                                                         intval($r[0]['parent'])
3862                                                 );
3863
3864                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d",
3865                                                         dbesc(datetime_convert()),
3866                                                         intval($importer['importer_uid']),
3867                                                         intval($posted_id)
3868                                                 );
3869                                         }
3870
3871                                         if($posted_id && $parent) {
3872
3873                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
3874
3875                                                 if((! $is_like) && (! $importer['self'])) {
3876
3877                                                         require_once('include/enotify.php');
3878
3879                                                         notification(array(
3880                                                                 'type'         => NOTIFY_COMMENT,
3881                                                                 'notify_flags' => $importer['notify-flags'],
3882                                                                 'language'     => $importer['language'],
3883                                                                 'to_name'      => $importer['username'],
3884                                                                 'to_email'     => $importer['email'],
3885                                                                 'uid'          => $importer['importer_uid'],
3886                                                                 'item'         => $datarray,
3887                                                                 'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
3888                                                                 'source_name'  => stripslashes($datarray['author-name']),
3889                                                                 'source_link'  => $datarray['author-link'],
3890                                                                 'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
3891                                                                         ? $importer['thumb'] : $datarray['author-avatar']),
3892                                                                 'verb'         => ACTIVITY_POST,
3893                                                                 'otype'        => 'item',
3894                                                                 'parent'       => $parent,
3895                                                                 'parent_uri'   => $parent_uri,
3896                                                         ));
3897
3898                                                 }
3899                                         }
3900
3901                                         return 0;
3902                                         // NOTREACHED
3903                                 }
3904                         }
3905                         else {
3906
3907                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
3908
3909                                 $item_id  = $item->get_id();
3910                                 $datarray = get_atom_elements($feed,$item);
3911
3912                                 if($importer['rel'] == CONTACT_IS_FOLLOWER)
3913                                         continue;
3914
3915                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
3916                                         dbesc($item_id),
3917                                         intval($importer['importer_uid'])
3918                                 );
3919
3920                                 // Update content if 'updated' changes
3921
3922                                 if(count($r)) {
3923                                         if (edited_timestamp_is_newer($r[0], $datarray)) {
3924
3925                                                 // do not accept (ignore) an earlier edit than one we currently have.
3926                                                 if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
3927                                                         continue;
3928
3929                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
3930                                                         dbesc($datarray['title']),
3931                                                         dbesc($datarray['body']),
3932                                                         dbesc($datarray['tag']),
3933                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
3934                                                         dbesc(datetime_convert()),
3935                                                         dbesc($item_id),
3936                                                         intval($importer['importer_uid'])
3937                                                 );
3938                                                 create_tags_from_itemuri($item_id, $importer['importer_uid']);
3939                                         }
3940
3941                                         // update last-child if it changes
3942
3943                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
3944                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
3945                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
3946                                                         dbesc(datetime_convert()),
3947                                                         dbesc($parent_uri),
3948                                                         intval($importer['importer_uid'])
3949                                                 );
3950                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d",
3951                                                         intval($allow[0]['data']),
3952                                                         dbesc(datetime_convert()),
3953                                                         dbesc($item_id),
3954                                                         intval($importer['importer_uid'])
3955                                                 );
3956                                         }
3957                                         continue;
3958                                 }
3959
3960                                 $datarray['parent-uri'] = $parent_uri;
3961                                 $datarray['uid'] = $importer['importer_uid'];
3962                                 $datarray['contact-id'] = $importer['id'];
3963                                 if(($datarray['verb'] === ACTIVITY_LIKE)
3964                                         || ($datarray['verb'] === ACTIVITY_DISLIKE)
3965                                         || ($datarray['verb'] === ACTIVITY_ATTEND)
3966                                         || ($datarray['verb'] === ACTIVITY_ATTENDNO)
3967                                         || ($datarray['verb'] === ACTIVITY_ATTENDMAYBE)) {
3968                                         $datarray['type'] = 'activity';
3969                                         $datarray['gravity'] = GRAVITY_LIKE;
3970                                         // only one like or dislike per person
3971                                         // splitted into two queries for performance issues
3972                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`parent-uri` = '%s') limit 1",
3973                                                 intval($datarray['uid']),
3974                                                 intval($datarray['contact-id']),
3975                                                 dbesc($datarray['verb']),
3976                                                 dbesc($parent_uri)
3977                                         );
3978                                         if($r && count($r))
3979                                                 continue;
3980
3981                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 and (`thr-parent` = '%s') limit 1",
3982                                                 intval($datarray['uid']),
3983                                                 intval($datarray['contact-id']),
3984                                                 dbesc($datarray['verb']),
3985                                                 dbesc($parent_uri)
3986                                         );
3987                                         if($r && count($r))
3988                                                 continue;
3989
3990                                 }
3991
3992                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
3993
3994                                         $xo = parse_xml_string($datarray['object'],false);
3995                                         $xt = parse_xml_string($datarray['target'],false);
3996
3997                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
3998                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
3999                                                         dbesc($xt->id),
4000                                                         intval($importer['importer_uid'])
4001                                                 );
4002                                                 if(! count($r))
4003                                                         continue;
4004
4005                                                 // extract tag, if not duplicate, add to parent item
4006                                                 if($xo->content) {
4007                                                         if(! (stristr($r[0]['tag'],trim($xo->content)))) {
4008                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d",
4009                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
4010                                                                         intval($r[0]['id'])
4011                                                                 );
4012                                                                 create_tags_from_item($r[0]['id']);
4013                                                         }
4014                                                 }
4015                                         }
4016                                 }
4017
4018                                 $posted_id = item_store($datarray);
4019
4020                                 // find out if our user is involved in this conversation and wants to be notified.
4021
4022                                 if(!x($datarray['type']) || $datarray['type'] != 'activity') {
4023
4024                                         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0",
4025                                                 dbesc($top_uri),
4026                                                 intval($importer['importer_uid'])
4027                                         );
4028
4029                                         if(count($myconv)) {
4030                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
4031
4032                                                 // first make sure this isn't our own post coming back to us from a wall-to-wall event
4033                                                 if(! link_compare($datarray['author-link'],$importer_url)) {
4034
4035
4036                                                         foreach($myconv as $conv) {
4037
4038                                                                 // now if we find a match, it means we're in this conversation
4039
4040                                                                 if(! link_compare($conv['author-link'],$importer_url))
4041                                                                         continue;
4042
4043                                                                 require_once('include/enotify.php');
4044
4045                                                                 $conv_parent = $conv['parent'];
4046
4047                                                                 notification(array(
4048                                                                         'type'         => NOTIFY_COMMENT,
4049                                                                         'notify_flags' => $importer['notify-flags'],
4050                                                                         'language'     => $importer['language'],
4051                                                                         'to_name'      => $importer['username'],
4052                                                                         'to_email'     => $importer['email'],
4053                                                                         'uid'          => $importer['importer_uid'],
4054                                                                         'item'         => $datarray,
4055                                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4056                                                                         'source_name'  => stripslashes($datarray['author-name']),
4057                                                                         'source_link'  => $datarray['author-link'],
4058                                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4059                                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4060                                                                         'verb'         => ACTIVITY_POST,
4061                                                                         'otype'        => 'item',
4062                                                                         'parent'       => $conv_parent,
4063                                                                         'parent_uri'   => $parent_uri
4064
4065                                                                 ));
4066
4067                                                                 // only send one notification
4068                                                                 break;
4069                                                         }
4070                                                 }
4071                                         }
4072                                 }
4073                                 continue;
4074                         }
4075                 }
4076
4077                 else {
4078
4079                         // Head post of a conversation. Have we seen it? If not, import it.
4080
4081
4082                         $item_id  = $item->get_id();
4083                         $datarray = get_atom_elements($feed,$item);
4084
4085                         if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
4086                                 $ev = bbtoevent($datarray['body']);
4087                                 if((x($ev,'desc') || x($ev,'summary')) && x($ev,'start')) {
4088                                         $ev['cid'] = $importer['id'];
4089                                         $ev['uid'] = $importer['uid'];
4090                                         $ev['uri'] = $item_id;
4091                                         $ev['edited'] = $datarray['edited'];
4092                                         $ev['private'] = $datarray['private'];
4093                                         $ev['guid'] = $datarray['guid'];
4094
4095                                         $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4096                                                 dbesc($item_id),
4097                                                 intval($importer['uid'])
4098                                         );
4099                                         if(count($r))
4100                                                 $ev['id'] = $r[0]['id'];
4101                                         $xyz = event_store($ev);
4102                                         continue;
4103                                 }
4104                         }
4105
4106                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
4107                                 dbesc($item_id),
4108                                 intval($importer['importer_uid'])
4109                         );
4110
4111                         // Update content if 'updated' changes
4112
4113                         if(count($r)) {
4114                                 if (edited_timestamp_is_newer($r[0], $datarray)) {
4115
4116                                         // do not accept (ignore) an earlier edit than one we currently have.
4117                                         if(datetime_convert('UTC','UTC',$datarray['edited']) < $r[0]['edited'])
4118                                                 continue;
4119
4120                                         $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4121                                                 dbesc($datarray['title']),
4122                                                 dbesc($datarray['body']),
4123                                                 dbesc($datarray['tag']),
4124                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
4125                                                 dbesc(datetime_convert()),
4126                                                 dbesc($item_id),
4127                                                 intval($importer['importer_uid'])
4128                                         );
4129                                         create_tags_from_itemuri($item_id, $importer['importer_uid']);
4130                                         update_thread_uri($item_id, $importer['importer_uid']);
4131                                 }
4132
4133                                 // update last-child if it changes
4134
4135                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
4136                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
4137                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
4138                                                 intval($allow[0]['data']),
4139                                                 dbesc(datetime_convert()),
4140                                                 dbesc($item_id),
4141                                                 intval($importer['importer_uid'])
4142                                         );
4143                                 }
4144                                 continue;
4145                         }
4146
4147                         $datarray['parent-uri'] = $item_id;
4148                         $datarray['uid'] = $importer['importer_uid'];
4149                         $datarray['contact-id'] = $importer['id'];
4150
4151
4152                         if(! link_compare($datarray['owner-link'],$importer['url'])) {
4153                                 // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
4154                                 // but otherwise there's a possible data mixup on the sender's system.
4155                                 // the tgroup delivery code called from item_store will correct it if it's a forum,
4156                                 // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
4157                                 logger('local_delivery: Correcting item owner.', LOGGER_DEBUG);
4158                                 $datarray['owner-name']   = $importer['senderName'];
4159                                 $datarray['owner-link']   = $importer['url'];
4160                                 $datarray['owner-avatar'] = $importer['thumb'];
4161                         }
4162
4163                         if(($importer['rel'] == CONTACT_IS_FOLLOWER) && (! tgroup_check($importer['importer_uid'],$datarray)))
4164                                 continue;
4165
4166                         // This is my contact on another system, but it's really me.
4167                         // Turn this into a wall post.
4168                         $notify = item_is_remote_self($importer, $datarray);
4169
4170                         $posted_id = item_store($datarray, false, $notify);
4171
4172                         if(stristr($datarray['verb'],ACTIVITY_POKE)) {
4173                                 $verb = urldecode(substr($datarray['verb'],strpos($datarray['verb'],'#')+1));
4174                                 if(! $verb)
4175                                         continue;
4176                                 $xo = parse_xml_string($datarray['object'],false);
4177
4178                                 if(($xo->type == ACTIVITY_OBJ_PERSON) && ($xo->id)) {
4179
4180                                         // somebody was poked/prodded. Was it me?
4181
4182                                         $links = parse_xml_string("<links>".unxmlify($xo->link)."</links>",false);
4183
4184                                 foreach($links->link as $l) {
4185                                 $atts = $l->attributes();
4186                                 switch($atts['rel']) {
4187                                         case "alternate":
4188                                                                 $Blink = $atts['href'];
4189                                                                 break;
4190                                                         default:
4191                                                                 break;
4192                                     }
4193                                 }
4194                                         if($Blink && link_compare($Blink,$a->get_baseurl() . '/profile/' . $importer['nickname'])) {
4195
4196                                                 // send a notification
4197                                                 require_once('include/enotify.php');
4198
4199                                                 notification(array(
4200                                                         'type'         => NOTIFY_POKE,
4201                                                         'notify_flags' => $importer['notify-flags'],
4202                                                         'language'     => $importer['language'],
4203                                                         'to_name'      => $importer['username'],
4204                                                         'to_email'     => $importer['email'],
4205                                                         'uid'          => $importer['importer_uid'],
4206                                                         'item'         => $datarray,
4207                                                         'link'             => $a->get_baseurl().'/display/'.urlencode(get_item_guid($posted_id)),
4208                                                         'source_name'  => stripslashes($datarray['author-name']),
4209                                                         'source_link'  => $datarray['author-link'],
4210                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
4211                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
4212                                                         'verb'         => $datarray['verb'],
4213                                                         'otype'        => 'person',
4214                                                         'activity'     => $verb,
4215                                                         'parent'       => $datarray['parent']
4216                                                 ));
4217                                         }
4218                                 }
4219                         }
4220
4221                         continue;
4222                 }
4223         }
4224
4225         return 0;
4226         // NOTREACHED
4227
4228 }
4229
4230
4231 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
4232         $url = notags(trim($datarray['author-link']));
4233         $name = notags(trim($datarray['author-name']));
4234         $photo = notags(trim($datarray['author-avatar']));
4235
4236         if (is_object($item)) {
4237                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
4238                 if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
4239                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
4240         } else
4241                 $nick = $item;
4242
4243         if(is_array($contact)) {
4244                 if(($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
4245                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
4246                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
4247                                 intval(CONTACT_IS_FRIEND),
4248                                 intval($contact['id']),
4249                                 intval($importer['uid'])
4250                         );
4251                 }
4252                 // send email notification to owner?
4253         }
4254         else {
4255
4256                 // create contact record
4257
4258                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
4259                         `blocked`, `readonly`, `pending`, `writable` )
4260                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
4261                         intval($importer['uid']),
4262                         dbesc(datetime_convert()),
4263                         dbesc($url),
4264                         dbesc(normalise_link($url)),
4265                         dbesc($name),
4266                         dbesc($nick),
4267                         dbesc($photo),
4268                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
4269                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
4270                 );
4271                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
4272                                 intval($importer['uid']),
4273                                 dbesc($url)
4274                 );
4275                 if(count($r))
4276                                 $contact_record = $r[0];
4277
4278                 // create notification
4279                 $hash = random_string();
4280
4281                 if(is_array($contact_record)) {
4282                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
4283                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
4284                                 intval($importer['uid']),
4285                                 intval($contact_record['id']),
4286                                 dbesc($hash),
4287                                 dbesc(datetime_convert())
4288                         );
4289                 }
4290
4291                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
4292                         intval($importer['uid'])
4293                 );
4294                 $a = get_app();
4295                 if(count($r)) {
4296
4297                         if(intval($r[0]['def_gid'])) {
4298                                 require_once('include/group.php');
4299                                 group_add_member($r[0]['uid'],'',$contact_record['id'],$r[0]['def_gid']);
4300                         }
4301
4302                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) &&
4303                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE))) {
4304
4305                                 notification(array(
4306                                         'type'         => NOTIFY_INTRO,
4307                                         'notify_flags' => $r[0]['notify-flags'],
4308                                         'language'     => $r[0]['language'],
4309                                         'to_name'      => $r[0]['username'],
4310                                         'to_email'     => $r[0]['email'],
4311                                         'uid'          => $r[0]['uid'],
4312                                         'link'             => $a->get_baseurl() . '/notifications/intro',
4313                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
4314                                         'source_link'  => $contact_record['url'],
4315                                         'source_photo' => $contact_record['photo'],
4316                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
4317                                         'otype'        => 'intro'
4318                                 ));
4319
4320                         }
4321                 }
4322         }
4323 }
4324
4325 function lose_follower($importer,$contact,$datarray,$item) {
4326
4327         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
4328                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4329                         intval(CONTACT_IS_SHARING),
4330                         intval($contact['id'])
4331                 );
4332         }
4333         else {
4334                 contact_remove($contact['id']);
4335         }
4336 }
4337
4338 function lose_sharer($importer,$contact,$datarray,$item) {
4339
4340         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
4341                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
4342                         intval(CONTACT_IS_FOLLOWER),
4343                         intval($contact['id'])
4344                 );
4345         }
4346         else {
4347                 contact_remove($contact['id']);
4348         }
4349 }
4350
4351
4352 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
4353
4354         $a = get_app();
4355
4356         if(is_array($importer)) {
4357                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
4358                         intval($importer['uid'])
4359                 );
4360         }
4361
4362         // Diaspora has different message-ids in feeds than they do
4363         // through the direct Diaspora protocol. If we try and use
4364         // the feed, we'll get duplicates. So don't.
4365
4366         if((! count($r)) || $contact['network'] === NETWORK_DIASPORA)
4367                 return;
4368
4369         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
4370
4371         // Use a single verify token, even if multiple hubs
4372
4373         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
4374
4375         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
4376
4377         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
4378
4379         if(!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
4380                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
4381                         dbesc($verify_token),
4382                         intval($contact['id'])
4383                 );
4384         }
4385
4386         post_url($url,$params);
4387
4388         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
4389
4390         return;
4391
4392 }
4393
4394
4395 function atom_author($tag,$name,$uri,$h,$w,$photo,$geo) {
4396         $o = '';
4397         if(! $tag)
4398                 return $o;
4399         $name = xmlify($name);
4400         $uri = xmlify($uri);
4401         $h = intval($h);
4402         $w = intval($w);
4403         $photo = xmlify($photo);
4404
4405
4406         $o .= "<$tag>\r\n";
4407         $o .= "\t<name>$name</name>\r\n";
4408         $o .= "\t<uri>$uri</uri>\r\n";
4409         $o .= "\t".'<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4410         $o .= "\t".'<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
4411
4412         if ($tag == "author") {
4413
4414                 if($geo)
4415                         $o .= '<georss:point>'.xmlify($geo).'</georss:point>'."\r\n";
4416
4417                 $r = q("SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
4418                                 `profile`.`name`, `profile`.`pub_keywords`, `profile`.`about`,
4419                                 `profile`.`homepage`,`contact`.`nick` FROM `profile`
4420                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
4421                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
4422                                 WHERE `profile`.`is-default` AND `contact`.`self` AND
4423                                         NOT `user`.`hidewall` AND `contact`.`nurl`='%s'",
4424                         dbesc(normalise_link($uri)));
4425                 if ($r) {
4426                         $location = '';
4427                         if($r[0]['locality'])
4428                                 $location .= $r[0]['locality'];
4429                         if($r[0]['region']) {
4430                                 if($location)
4431                                         $location .= ', ';
4432                                 $location .= $r[0]['region'];
4433                         }
4434                         if($r[0]['country-name']) {
4435                                 if($location)
4436                                         $location .= ', ';
4437                                 $location .= $r[0]['country-name'];
4438                         }
4439
4440                         $o .= "\t<poco:preferredUsername>".xmlify($r[0]["nick"])."</poco:preferredUsername>\r\n";
4441                         $o .= "\t<poco:displayName>".xmlify($r[0]["name"])."</poco:displayName>\r\n";
4442                         $o .= "\t<poco:note>".xmlify($r[0]["about"])."</poco:note>\r\n";
4443                         $o .= "\t<poco:address>\r\n";
4444                         $o .= "\t\t<poco:formatted>".xmlify($location)."</poco:formatted>\r\n";
4445                         $o .= "\t</poco:address>\r\n";
4446                         $o .= "\t<poco:urls>\r\n";
4447                         $o .= "\t<poco:type>homepage</poco:type>\r\n";
4448                         $o .= "\t\t<poco:value>".xmlify($r[0]["homepage"])."</poco:value>\r\n";
4449                         $o .= "\t\t<poco:primary>true</poco:primary>\r\n";
4450                         $o .= "\t</poco:urls>\r\n";
4451                 }
4452         }
4453
4454         call_hooks('atom_author', $o);
4455
4456         $o .= "</$tag>\r\n";
4457         return $o;
4458 }
4459
4460 function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
4461
4462         $a = get_app();
4463
4464         if(! $item['parent'])
4465                 return;
4466
4467         if($item['deleted'])
4468                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
4469
4470
4471         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
4472                 $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid);
4473         else
4474                 $body = $item['body'];
4475
4476
4477         $o = "\r\n\r\n<entry>\r\n";
4478
4479         if(is_array($author))
4480                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb'], $item['coord']);
4481         else
4482                 $o .= atom_author('author',(($item['author-name']) ? $item['author-name'] : $item['name']),(($item['author-link']) ? $item['author-link'] : $item['url']),80,80,(($item['author-avatar']) ? $item['author-avatar'] : $item['thumb']), $item['coord']);
4483         if(strlen($item['owner-name']))
4484                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar'], $item['coord']);
4485
4486         if(($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
4487                 $parent = q("SELECT `guid` FROM `item` WHERE `id` = %d", intval($item["parent"]));
4488                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
4489                 $o .= '<thr:in-reply-to ref="'.xmlify($parent_item).'" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$parent[0]['guid']).'" />'."\r\n";
4490         }
4491
4492         $htmlbody = $body;
4493
4494         if ($item['title'] != "")
4495                 $htmlbody = "[b]".$item['title']."[/b]\n\n".$htmlbody;
4496
4497         $htmlbody = bbcode($htmlbody, false, false, 7);
4498
4499         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
4500         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
4501         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
4502         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
4503         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
4504         $o .= '<content type="' . $type . '" >' . xmlify((($type === 'html') ? $htmlbody : $body)) . '</content>' . "\r\n";
4505         $o .= '<link rel="alternate" type="text/html" href="'.xmlify($a->get_baseurl().'/display/'.$item['guid']).'" />'."\r\n";
4506
4507         $o .= '<status_net notice_id="'.$item['id'].'"></status_net>'."\r\n";
4508
4509         if($comment)
4510                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
4511
4512         if($item['location']) {
4513                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
4514                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
4515         }
4516
4517         if($item['coord'])
4518                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
4519
4520         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
4521                 $o .= '<dfrn:private>' . (($item['private']) ? $item['private'] : 1) . '</dfrn:private>' . "\r\n";
4522
4523         if($item['extid'])
4524                 $o .= '<dfrn:extid>' . xmlify($item['extid']) . '</dfrn:extid>' . "\r\n";
4525         if($item['bookmark'])
4526                 $o .= '<dfrn:bookmark>true</dfrn:bookmark>' . "\r\n";
4527
4528         if($item['app'])
4529                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
4530
4531         if($item['guid'])
4532                 $o .= '<dfrn:diaspora_guid>' . $item['guid'] . '</dfrn:diaspora_guid>' . "\r\n";
4533
4534         if($item['signed_text']) {
4535                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
4536                 $o .= '<dfrn:diaspora_signature>' . xmlify($sign) . '</dfrn:diaspora_signature>' . "\r\n";
4537         }
4538
4539         $verb = construct_verb($item);
4540         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
4541         $actobj = construct_activity_object($item);
4542         if(strlen($actobj))
4543                 $o .= $actobj;
4544         $actarg = construct_activity_target($item);
4545         if(strlen($actarg))
4546                 $o .= $actarg;
4547
4548         $tags = item_getfeedtags($item);
4549         if(count($tags)) {
4550                 foreach($tags as $t)
4551                         if (($type != 'html') OR ($t[0] != "@"))
4552                                 $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
4553         }
4554
4555         // To-Do:
4556         // To support these elements, the API needs to be enhanced
4557         //$o .= '<link rel="ostatus:conversation" href="'.xmlify($a->get_baseurl().'/display/'.$owner['nickname'].'/'.$item['parent']).'"/>'."\r\n";
4558         //$o .= "\t".'<link rel="self" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4559         //$o .= "\t".'<link rel="edit" type="application/atom+xml" href="'.xmlify($a->get_baseurl().'/api/statuses/show/'.$item['id'].'.atom').'"/>'."\r\n";
4560
4561         $o .= item_get_attachment($item);
4562
4563         $o .= item_getfeedattach($item);
4564
4565         $mentioned = get_mentions($item);
4566         if($mentioned)
4567                 $o .= $mentioned;
4568
4569         call_hooks('atom_entry', $o);
4570
4571         $o .= '</entry>' . "\r\n";
4572
4573         return $o;
4574 }
4575
4576 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
4577
4578         if(get_config('system','disable_embedded'))
4579                 return $s;
4580
4581         $a = get_app();
4582
4583         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
4584         $site = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://'));
4585
4586         $orig_body = $s;
4587         $new_body = '';
4588
4589         $img_start = strpos($orig_body, '[img');
4590         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4591         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4592         while( ($img_st_close !== false) && ($img_len !== false) ) {
4593
4594                 $img_st_close++; // make it point to AFTER the closing bracket
4595                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
4596
4597                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
4598
4599
4600                 if(stristr($image , $site . '/photo/')) {
4601                         // Only embed locally hosted photos
4602                         $replace = false;
4603                         $i = basename($image);
4604                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
4605                         $x = strpos($i,'-');
4606
4607                         if($x) {
4608                                 $res = substr($i,$x+1);
4609                                 $i = substr($i,0,$x);
4610                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
4611                                         dbesc($i),
4612                                         intval($res),
4613                                         intval($uid)
4614                                 );
4615                                 if($r) {
4616
4617                                         // Check to see if we should replace this photo link with an embedded image
4618                                         // 1. No need to do so if the photo is public
4619                                         // 2. If there's a contact-id provided, see if they're in the access list
4620                                         //    for the photo. If so, embed it.
4621                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
4622                                         //    permissions, regardless of order but first check to see if they're an exact
4623                                         //    match to save some processing overhead.
4624
4625                                         if(has_permissions($r[0])) {
4626                                                 if($cid) {
4627                                                         $recips = enumerate_permissions($r[0]);
4628                                                         if(in_array($cid, $recips)) {
4629                                                                 $replace = true;
4630                                                         }
4631                                                 }
4632                                                 elseif($item) {
4633                                                         if(compare_permissions($item,$r[0]))
4634                                                                 $replace = true;
4635                                                 }
4636                                         }
4637                                         if($replace) {
4638                                                 $data = $r[0]['data'];
4639                                                 $type = $r[0]['type'];
4640
4641                                                 // If a custom width and height were specified, apply before embedding
4642                                                 if(preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
4643                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
4644
4645                                                         $width = intval($match[1]);
4646                                                         $height = intval($match[2]);
4647
4648                                                         $ph = new Photo($data, $type);
4649                                                         if($ph->is_valid()) {
4650                                                                 $ph->scaleImage(max($width, $height));
4651                                                                 $data = $ph->imageString();
4652                                                                 $type = $ph->getType();
4653                                                         }
4654                                                 }
4655
4656                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
4657                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
4658                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
4659                                         }
4660                                 }
4661                         }
4662                 }
4663
4664                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
4665                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
4666                 if($orig_body === false)
4667                         $orig_body = '';
4668
4669                 $img_start = strpos($orig_body, '[img');
4670                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
4671                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
4672         }
4673
4674         $new_body = $new_body . $orig_body;
4675
4676         return($new_body);
4677 }
4678
4679
4680 function has_permissions($obj) {
4681         if(($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
4682                 return true;
4683         return false;
4684 }
4685
4686 function compare_permissions($obj1,$obj2) {
4687         // first part is easy. Check that these are exactly the same.
4688         if(($obj1['allow_cid'] == $obj2['allow_cid'])
4689                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
4690                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
4691                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
4692                 return true;
4693
4694         // This is harder. Parse all the permissions and compare the resulting set.
4695
4696         $recipients1 = enumerate_permissions($obj1);
4697         $recipients2 = enumerate_permissions($obj2);
4698         sort($recipients1);
4699         sort($recipients2);
4700         if($recipients1 == $recipients2)
4701                 return true;
4702         return false;
4703 }
4704
4705 // returns an array of contact-ids that are allowed to see this object
4706
4707 function enumerate_permissions($obj) {
4708         require_once('include/group.php');
4709         $allow_people = expand_acl($obj['allow_cid']);
4710         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
4711         $deny_people  = expand_acl($obj['deny_cid']);
4712         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
4713         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
4714         $deny         = array_unique(array_merge($deny_people,$deny_groups));
4715         $recipients   = array_diff($recipients,$deny);
4716         return $recipients;
4717 }
4718
4719 function item_getfeedtags($item) {
4720         $ret = array();
4721         $matches = false;
4722         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4723         if($cnt) {
4724                 for($x = 0; $x < $cnt; $x ++) {
4725                         if($matches[1][$x])
4726                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
4727                 }
4728         }
4729         $matches = false;
4730         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
4731         if($cnt) {
4732                 for($x = 0; $x < $cnt; $x ++) {
4733                         if($matches[1][$x])
4734                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
4735                 }
4736         }
4737         return $ret;
4738 }
4739
4740 function item_get_attachment($item) {
4741         $o = "";
4742         $siteinfo = get_attached_data($item["body"]);
4743
4744         switch($siteinfo["type"]) {
4745                 case 'link':
4746                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4747                         break;
4748                 case 'photo':
4749                         $imgdata = get_photo_info($siteinfo["image"]);
4750                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["image"]).'" type="'.$imgdata["mime"].'" length="'.$imgdata["size"].'"/>'."\r\n";
4751                         break;
4752                 case 'video':
4753                         $o = '<link rel="enclosure" href="'.xmlify($siteinfo["url"]).'" type="text/html; charset=UTF-8" length="" title="'.xmlify($siteinfo["title"]).'"/>'."\r\n";
4754                         break;
4755                 default:
4756                         break;
4757         }
4758
4759         return $o;
4760 }
4761
4762 function item_getfeedattach($item) {
4763         $ret = '';
4764         $arr = explode('[/attach],',$item['attach']);
4765         if(count($arr)) {
4766                 foreach($arr as $r) {
4767                         $matches = false;
4768                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches);
4769                         if($cnt) {
4770                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
4771                                 if(intval($matches[2]))
4772                                         $ret .= 'length="' . intval($matches[2]) . '" ';
4773                                 if($matches[4] !== ' ')
4774                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
4775                                 $ret .= ' />' . "\r\n";
4776                         }
4777                 }
4778         }
4779         return $ret;
4780 }
4781
4782
4783
4784 function item_expire($uid, $days, $network = "", $force = false) {
4785
4786         if((! $uid) || ($days < 1))
4787                 return;
4788
4789         // $expire_network_only = save your own wall posts
4790         // and just expire conversations started by others
4791
4792         $expire_network_only = get_pconfig($uid,'expire','network_only');
4793         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
4794
4795         if ($network != "") {
4796                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
4797                 // There is an index "uid_network_received" but not "uid_network_created"
4798                 // This avoids the creation of another index just for one purpose.
4799                 // And it doesn't really matter wether to look at "received" or "created"
4800                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4801         } else
4802                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
4803
4804         $r = q("SELECT * FROM `item`
4805                 WHERE `uid` = %d $range
4806                 AND `id` = `parent`
4807                 $sql_extra
4808                 AND `deleted` = 0",
4809                 intval($uid),
4810                 intval($days)
4811         );
4812
4813         if(! count($r))
4814                 return;
4815
4816         $expire_items = get_pconfig($uid, 'expire','items');
4817         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
4818
4819         // Forcing expiring of items - but not notes and marked items
4820         if ($force)
4821                 $expire_items = true;
4822
4823         $expire_notes = get_pconfig($uid, 'expire','notes');
4824         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
4825
4826         $expire_starred = get_pconfig($uid, 'expire','starred');
4827         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
4828
4829         $expire_photos = get_pconfig($uid, 'expire','photos');
4830         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
4831
4832         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
4833
4834         foreach($r as $item) {
4835
4836                 // don't expire filed items
4837
4838                 if(strpos($item['file'],'[') !== false)
4839                         continue;
4840
4841                 // Only expire posts, not photos and photo comments
4842
4843                 if($expire_photos==0 && strlen($item['resource-id']))
4844                         continue;
4845                 if($expire_starred==0 && intval($item['starred']))
4846                         continue;
4847                 if($expire_notes==0 && $item['type']=='note')
4848                         continue;
4849                 if($expire_items==0 && $item['type']!='note')
4850                         continue;
4851
4852                 drop_item($item['id'],false);
4853         }
4854
4855         proc_run('php',"include/notifier.php","expire","$uid");
4856
4857 }
4858
4859
4860 function drop_items($items) {
4861         $uid = 0;
4862
4863         if(! local_user() && ! remote_user())
4864                 return;
4865
4866         if(count($items)) {
4867                 foreach($items as $item) {
4868                         $owner = drop_item($item,false);
4869                         if($owner && ! $uid)
4870                                 $uid = $owner;
4871                 }
4872         }
4873
4874         // multiple threads may have been deleted, send an expire notification
4875
4876         if($uid)
4877                 proc_run('php',"include/notifier.php","expire","$uid");
4878 }
4879
4880
4881 function drop_item($id,$interactive = true) {
4882
4883         $a = get_app();
4884
4885         // locate item to be deleted
4886
4887         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
4888                 intval($id)
4889         );
4890
4891         if(! count($r)) {
4892                 if(! $interactive)
4893                         return 0;
4894                 notice( t('Item not found.') . EOL);
4895                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4896         }
4897
4898         $item = $r[0];
4899
4900         $owner = $item['uid'];
4901
4902         $cid = 0;
4903
4904         // check if logged in user is either the author or owner of this item
4905
4906         if(is_array($_SESSION['remote'])) {
4907                 foreach($_SESSION['remote'] as $visitor) {
4908                         if($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
4909                                 $cid = $visitor['cid'];
4910                                 break;
4911                         }
4912                 }
4913         }
4914
4915
4916         if((local_user() == $item['uid']) || ($cid) || (! $interactive)) {
4917
4918                 // Check if we should do HTML-based delete confirmation
4919                 if($_REQUEST['confirm']) {
4920                         // <form> can't take arguments in its "action" parameter
4921                         // so add any arguments as hidden inputs
4922                         $query = explode_querystring($a->query_string);
4923                         $inputs = array();
4924                         foreach($query['args'] as $arg) {
4925                                 if(strpos($arg, 'confirm=') === false) {
4926                                         $arg_parts = explode('=', $arg);
4927                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
4928                                 }
4929                         }
4930
4931                         return replace_macros(get_markup_template('confirm.tpl'), array(
4932                                 '$method' => 'get',
4933                                 '$message' => t('Do you really want to delete this item?'),
4934                                 '$extra_inputs' => $inputs,
4935                                 '$confirm' => t('Yes'),
4936                                 '$confirm_url' => $query['base'],
4937                                 '$confirm_name' => 'confirmed',
4938                                 '$cancel' => t('Cancel'),
4939                         ));
4940                 }
4941                 // Now check how the user responded to the confirmation query
4942                 if($_REQUEST['canceled']) {
4943                         goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
4944                 }
4945
4946                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
4947                 // delete the item
4948
4949                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
4950                         dbesc(datetime_convert()),
4951                         dbesc(datetime_convert()),
4952                         intval($item['id'])
4953                 );
4954                 create_tags_from_item($item['id']);
4955                 create_files_from_item($item['id']);
4956                 delete_thread($item['id'], $item['parent-uri']);
4957
4958                 // clean up categories and tags so they don't end up as orphans
4959
4960                 $matches = false;
4961                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
4962                 if($cnt) {
4963                         foreach($matches as $mtch) {
4964                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
4965                         }
4966                 }
4967
4968                 $matches = false;
4969
4970                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
4971                 if($cnt) {
4972                         foreach($matches as $mtch) {
4973                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
4974                         }
4975                 }
4976
4977                 // If item is a link to a photo resource, nuke all the associated photos
4978                 // (visitors will not have photo resources)
4979                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
4980                 // generate a resource-id and therefore aren't intimately linked to the item.
4981
4982                 if(strlen($item['resource-id'])) {
4983                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
4984                                 dbesc($item['resource-id']),
4985                                 intval($item['uid'])
4986                         );
4987                         // ignore the result
4988                 }
4989
4990                 // If item is a link to an event, nuke the event record.
4991
4992                 if(intval($item['event-id'])) {
4993                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
4994                                 intval($item['event-id']),
4995                                 intval($item['uid'])
4996                         );
4997                         // ignore the result
4998                 }
4999
5000                 // If item has attachments, drop them
5001
5002                 foreach(explode(",",$item['attach']) as $attach){
5003                         preg_match("|attach/(\d+)|", $attach, $matches);
5004                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
5005                                 intval($matches[1]),
5006                                 local_user()
5007                         );
5008                         // ignore the result
5009                 }
5010
5011
5012                 // clean up item_id and sign meta-data tables
5013
5014                 /*
5015                 // Old code - caused very long queries and warning entries in the mysql logfiles:
5016
5017                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
5018                         intval($item['id']),
5019                         intval($item['uid'])
5020                 );
5021
5022                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
5023                         intval($item['id']),
5024                         intval($item['uid'])
5025                 );
5026                 */
5027
5028                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
5029
5030                 // Creating list of parents
5031                 $r = q("select id from item where parent = %d and uid = %d",
5032                         intval($item['id']),
5033                         intval($item['uid'])
5034                 );
5035
5036                 $parentid = "";
5037
5038                 foreach ($r AS $row) {
5039                         if ($parentid != "")
5040                                 $parentid .= ", ";
5041
5042                         $parentid .= $row["id"];
5043                 }
5044
5045                 // Now delete them
5046                 if ($parentid != "") {
5047                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
5048
5049                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
5050                 }
5051
5052                 // If it's the parent of a comment thread, kill all the kids
5053
5054                 if($item['uri'] == $item['parent-uri']) {
5055                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
5056                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
5057                                 dbesc(datetime_convert()),
5058                                 dbesc(datetime_convert()),
5059                                 dbesc($item['parent-uri']),
5060                                 intval($item['uid'])
5061                         );
5062                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
5063                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
5064                         delete_thread_uri($item['parent-uri'], $item['uid']);
5065                         // ignore the result
5066                 }
5067                 else {
5068                         // ensure that last-child is set in case the comment that had it just got wiped.
5069                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
5070                                 dbesc(datetime_convert()),
5071                                 dbesc($item['parent-uri']),
5072                                 intval($item['uid'])
5073                         );
5074                         // who is the last child now?
5075                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
5076                                 dbesc($item['parent-uri']),
5077                                 intval($item['uid'])
5078                         );
5079                         if(count($r)) {
5080                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
5081                                         intval($r[0]['id'])
5082                                 );
5083                         }
5084
5085                         // Add a relayable_retraction signature for Diaspora.
5086                         store_diaspora_retract_sig($item, $a->user, $a->get_baseurl());
5087                 }
5088
5089                 $drop_id = intval($item['id']);
5090
5091                 // send the notification upstream/downstream as the case may be
5092
5093                 proc_run('php',"include/notifier.php","drop","$drop_id");
5094
5095                 if(! $interactive)
5096                         return $owner;
5097                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5098                 //NOTREACHED
5099         }
5100         else {
5101                 if(! $interactive)
5102                         return 0;
5103                 notice( t('Permission denied.') . EOL);
5104                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
5105                 //NOTREACHED
5106         }
5107
5108 }
5109
5110
5111 function first_post_date($uid,$wall = false) {
5112         $r = q("select id, created from item
5113                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
5114                 and id = parent
5115                 order by created asc limit 1",
5116                 intval($uid),
5117                 intval($wall ? 1 : 0)
5118         );
5119         if(count($r)) {
5120 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
5121                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
5122         }
5123         return false;
5124 }
5125
5126 /* modified posted_dates() {below} to arrange the list in years */
5127 function list_post_dates($uid, $wall) {
5128         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5129
5130         $dthen = first_post_date($uid, $wall);
5131         if(! $dthen)
5132                 return array();
5133
5134         // Set the start and end date to the beginning of the month
5135         $dnow = substr($dnow,0,8).'01';
5136         $dthen = substr($dthen,0,8).'01';
5137
5138         $ret = array();
5139
5140         // Starting with the current month, get the first and last days of every
5141         // month down to and including the month of the first post
5142         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5143                 $dyear = intval(substr($dnow,0,4));
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'));
5149                 if(! $ret[$dyear])
5150                         $ret[$dyear] = array();
5151                 $ret[$dyear][] = array($str,$end_month,$start_month);
5152                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5153         }
5154         return $ret;
5155 }
5156
5157 function posted_dates($uid,$wall) {
5158         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
5159
5160         $dthen = first_post_date($uid,$wall);
5161         if(! $dthen)
5162                 return array();
5163
5164         // Set the start and end date to the beginning of the month
5165         $dnow = substr($dnow,0,8).'01';
5166         $dthen = substr($dthen,0,8).'01';
5167
5168         $ret = array();
5169         // Starting with the current month, get the first and last days of every
5170         // month down to and including the month of the first post
5171         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
5172                 $dstart = substr($dnow,0,8) . '01';
5173                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
5174                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
5175                 $end_month = datetime_convert('','',$dend,'Y-m-d');
5176                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
5177                 $ret[] = array($str,$end_month,$start_month);
5178                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
5179         }
5180         return $ret;
5181 }
5182
5183
5184 function posted_date_widget($url,$uid,$wall) {
5185         $o = '';
5186
5187         if(! feature_enabled($uid,'archives'))
5188                 return $o;
5189
5190         // For former Facebook folks that left because of "timeline"
5191
5192 /*      if($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
5193                 return $o;*/
5194
5195         $visible_years = get_pconfig($uid,'system','archive_visible_years');
5196         if(! $visible_years)
5197                 $visible_years = 5;
5198
5199         $ret = list_post_dates($uid,$wall);
5200
5201         if(! count($ret))
5202                 return $o;
5203
5204         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
5205         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
5206
5207         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
5208                 '$title' => t('Archives'),
5209                 '$size' => $visible_years,
5210                 '$cutoff_year' => $cutoff_year,
5211                 '$cutoff' => $cutoff,
5212                 '$url' => $url,
5213                 '$dates' => $ret,
5214                 '$showmore' => t('show more')
5215
5216         ));
5217         return $o;
5218 }
5219
5220 function store_diaspora_retract_sig($item, $user, $baseurl) {
5221         // Note that we can't add a target_author_signature
5222         // if the comment was deleted by a remote user. That should be ok, because if a remote user is deleting
5223         // the comment, that means we're the home of the post, and Diaspora will only
5224         // check the parent_author_signature of retractions that it doesn't have to relay further
5225         //
5226         // I don't think this function gets called for an "unlike," but I'll check anyway
5227
5228         $enabled = intval(get_config('system','diaspora_enabled'));
5229         if(! $enabled) {
5230                 logger('drop_item: diaspora support disabled, not storing retraction signature', LOGGER_DEBUG);
5231                 return;
5232         }
5233
5234         logger('drop_item: storing diaspora retraction signature');
5235
5236         $signed_text = $item['guid'] . ';' . ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
5237
5238         if(local_user() == $item['uid']) {
5239
5240                 $handle = $user['nickname'] . '@' . substr($baseurl, strpos($baseurl,'://') + 3);
5241                 $authorsig = base64_encode(rsa_sign($signed_text,$user['prvkey'],'sha256'));
5242         }
5243         else {
5244                 $r = q("SELECT `nick`, `url` FROM `contact` WHERE `id` = '%d' LIMIT 1",
5245                         $item['contact-id'] // If this function gets called, drop_item() has already checked remote_user() == $item['contact-id']
5246                 );
5247                 if(count($r)) {
5248                         // The below handle only works for NETWORK_DFRN. I think that's ok, because this function
5249                         // only handles DFRN deletes
5250                         $handle_baseurl_start = strpos($r['url'],'://') + 3;
5251                         $handle_baseurl_length = strpos($r['url'],'/profile') - $handle_baseurl_start;
5252                         $handle = $r['nick'] . '@' . substr($r['url'], $handle_baseurl_start, $handle_baseurl_length);
5253                         $authorsig = '';
5254                 }
5255         }
5256
5257         if(isset($handle))
5258                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
5259                         intval($item['id']),
5260                         dbesc($signed_text),
5261                         dbesc($authorsig),
5262                         dbesc($handle)
5263                 );
5264
5265         return;
5266 }