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
   8 function get_feed_for(&$a, $dfrn_id, $owner_nick, $last_update, $direction = 0) {
   9
  10
  11         $sitefeed    = ((strlen($owner_nick)) ? false : true); // not yet implemented, need to rewrite huge chunks of following logic
  12         $public_feed = (($dfrn_id) ? false : true);
  13         $starred     = false;   // not yet implemented, possible security issues
  14         $converse    = false;
  15
  16         if($public_feed && $a->argc > 2) {
  17                 for($x = 2; $x < $a->argc; $x++) {
  18                         if($a->argv[$x] == 'converse')
  19                                 $converse = true;
  20                         if($a->argv[$x] == 'starred')
  21                                 $starred = true;
  22                         if($a->argv[$x] === 'category' && $a->argc > ($x + 1) && strlen($a->argv[$x+1]))
  23                                 $category = $a->argv[$x+1];
  24                 }
  25         }
  26
  27
  28
  29         // default permissions - anonymous user
  30
  31         $sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid`  = '' AND `deny_gid`  = '' ";
  32
  33         $r = q("SELECT `contact`.*, `user`.`uid` AS `user_uid`, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`
  34                 FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
  35                 WHERE `contact`.`self` = 1 AND `user`.`nickname` = '%s' LIMIT 1",
  36                 dbesc($owner_nick)
  37         );
  38
  39         if(! count($r))
  40                 killme();
  41
  42         $owner = $r[0];
  43         $owner_id = $owner['user_uid'];
  44         $owner_nick = $owner['nickname'];
  45
  46         $birthday = feed_birthday($owner_id,$owner['timezone']);
  47
  48         if(! $public_feed) {
  49
  50                 $sql_extra = '';
  51                 switch($direction) {
  52                         case (-1):
  53                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  54                                 $my_id = $dfrn_id;
  55                                 break;
  56                         case 0:
  57                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  58                                 $my_id = '1:' . $dfrn_id;
  59                                 break;
  60                         case 1:
  61                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  62                                 $my_id = '0:' . $dfrn_id;
  63                                 break;
  64                         default:
  65                                 return false;
  66                                 break; // NOTREACHED
  67                 }
  68
  69                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
  70                         intval($owner_id)
  71                 );
  72
  73                 if(! count($r))
  74                         killme();
  75
  76                 $contact = $r[0];
  77                 $groups = init_groups_visitor($contact['id']);
  78
  79                 if(count($groups)) {
  80                         for($x = 0; $x < count($groups); $x ++)
  81                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
  82                         $gs = implode('|', $groups);
  83                 }
  84                 else
  85                         $gs = '<<>>' ; // Impossible to match
  86
  87                 $sql_extra = sprintf("
  88                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
  89                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
  90                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
  91                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
  92                 ",
  93                         intval($contact['id']),
  94                         intval($contact['id']),
  95                         dbesc($gs),
  96                         dbesc($gs)
  97                 );
  98         }
  99
 100         if($public_feed)
 101                 $sort = 'DESC';
 102         else
 103                 $sort = 'ASC';
 104
 105         if(! strlen($last_update))
 106                 $last_update = 'now -30 days';
 107
 108         if(isset($category)) {
 109                 $sql_extra .= file_tag_file_query('item',$category,'category');
 110         }
 111
 112         if($public_feed) {
 113                 if(! $converse)
 114                         $sql_extra .= " AND `contact`.`self` = 1 ";
 115         }
 116
 117         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
 118
 119         $r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
 120                 `contact`.`name`, `contact`.`network`, `contact`.`photo`, `contact`.`url`,
 121                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
 122                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
 123                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`,
 124                 `sign`.`signed_text`, `sign`.`signature`, `sign`.`signer`
 125                 FROM `item` LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 126                 LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
 127                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1 and `item`.`moderated` = 0 AND `item`.`parent` != 0
 128                 AND `item`.`wall` = 1 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 129                 AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 130                 $sql_extra
 131                 ORDER BY `parent` %s, `created` ASC LIMIT 0, 300",
 132                 intval($owner_id),
 133                 dbesc($check_date),
 134                 dbesc($check_date),
 135                 dbesc($sort)
 136         );
 137
 138         // Will check further below if this actually returned results.
 139         // We will provide an empty feed if that is the case.
 140
 141         $items = $r;
 142
 143         $feed_template = get_markup_template(($dfrn_id) ? 'atom_feed_dfrn.tpl' : 'atom_feed.tpl');
 144
 145         $atom = '';
 146
 147         $hubxml = feed_hublinks();
 148
 149         $salmon = feed_salmonlinks($owner_nick);
 150
 151         $atom .= replace_macros($feed_template, array(
 152                 '$version'      => xmlify(FRIENDICA_VERSION),
 153                 '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 154                 '$feed_title'   => xmlify($owner['name']),
 155                 '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
 156                 '$hub'          => $hubxml,
 157                 '$salmon'       => $salmon,
 158                 '$name'         => xmlify($owner['name']),
 159                 '$profile_page' => xmlify($owner['url']),
 160                 '$photo'        => xmlify($owner['photo']),
 161                 '$thumb'        => xmlify($owner['thumb']),
 162                 '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 163                 '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 164                 '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME)) ,
 165                 '$birthday'     => ((strlen($birthday)) ? '<dfrn:birthday>' . xmlify($birthday) . '</dfrn:birthday>' : ''),
 166                 '$community'    => (($owner['page-flags'] == PAGE_COMMUNITY) ? '<dfrn:community>1</dfrn:community>' : '')
 167         ));
 168
 169         call_hooks('atom_feed', $atom);
 170
 171         if(! count($items)) {
 172
 173                 call_hooks('atom_feed_end', $atom);
 174
 175                 $atom .= '</feed>' . "\r\n";
 176                 return $atom;
 177         }
 178
 179         foreach($items as $item) {
 180
 181                 // prevent private email from leaking.
 182                 if($item['network'] === NETWORK_MAIL)
 183                         continue;
 184
 185                 // public feeds get html, our own nodes use bbcode
 186
 187                 if($public_feed) {
 188                         $type = 'html';
 189                         // catch any email that's in a public conversation and make sure it doesn't leak
 190                         if($item['private'])
 191                                 continue;
 192                 }
 193                 else {
 194                         $type = 'text';
 195                 }
 196
 197                 $atom .= atom_entry($item,$type,null,$owner,true);
 198         }
 199
 200         call_hooks('atom_feed_end', $atom);
 201
 202         $atom .= '</feed>' . "\r\n";
 203
 204         return $atom;
 205 }
 206
 207
 208 function construct_verb($item) {
 209         if($item['verb'])
 210                 return $item['verb'];
 211         return ACTIVITY_POST;
 212 }
 213
 214 function construct_activity_object($item) {
 215
 216         if($item['object']) {
 217                 $o = '<as:object>' . "\r\n";
 218                 $r = parse_xml_string($item['object'],false);
 219
 220
 221                 if(! $r)
 222                         return '';
 223                 if($r->type)
 224                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 225                 if($r->id)
 226                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 227                 if($r->title)
 228                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 229                 if($r->link) {
 230                         if(substr($r->link,0,1) === '<') {
 231                                 // patch up some facebook "like" activity objects that got stored incorrectly
 232                                 // for a couple of months prior to 9-Jun-2011 and generated bad XML.
 233                                 // we can probably remove this hack here and in the following function in a few months time.
 234                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 235                                         $r->link = str_replace('&','&amp;', $r->link);
 236                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 237                                 $o .= $r->link;
 238                         }
 239                         else
 240                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 241                 }
 242                 if($r->content)
 243                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 244                 $o .= '</as:object>' . "\r\n";
 245                 return $o;
 246         }
 247
 248         return '';
 249 }
 250
 251 function construct_activity_target($item) {
 252
 253         if($item['target']) {
 254                 $o = '<as:target>' . "\r\n";
 255                 $r = parse_xml_string($item['target'],false);
 256                 if(! $r)
 257                         return '';
 258                 if($r->type)
 259                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 260                 if($r->id)
 261                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 262                 if($r->title)
 263                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 264                 if($r->link) {
 265                         if(substr($r->link,0,1) === '<') {
 266                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 267                                         $r->link = str_replace('&','&amp;', $r->link);
 268                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 269                                 $o .= $r->link;
 270                         }
 271                         else
 272                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 273                 }
 274                 if($r->content)
 275                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 276                 $o .= '</as:target>' . "\r\n";
 277                 return $o;
 278         }
 279
 280         return '';
 281 }
 282
 283
 284
 285
 286 function get_atom_elements($feed,$item) {
 287
 288         require_once('library/HTMLPurifier.auto.php');
 289         require_once('include/html2bbcode.php');
 290
 291         $best_photo = array();
 292
 293         $res = array();
 294
 295         $author = $item->get_author();
 296         if($author) {
 297                 $res['author-name'] = unxmlify($author->get_name());
 298                 $res['author-link'] = unxmlify($author->get_link());
 299         }
 300         else {
 301                 $res['author-name'] = unxmlify($feed->get_title());
 302                 $res['author-link'] = unxmlify($feed->get_permalink());
 303         }
 304         $res['uri'] = unxmlify($item->get_id());
 305         $res['title'] = unxmlify($item->get_title());
 306         $res['body'] = unxmlify($item->get_content());
 307         $res['plink'] = unxmlify($item->get_link(0));
 308
 309         if($res['plink'])
 310                 $base_url = implode('/', array_slice(explode('/',$res['plink']),0,3));
 311         else
 312                 $base_url = '';
 313
 314         // look for a photo. We should check media size and find the best one,
 315         // but for now let's just find any author photo
 316
 317         $rawauthor = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 318
 319         if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 320                 $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 321                 foreach($base as $link) {
 322                         if(!x($res, 'author-avatar') || !$res['author-avatar']) {
 323                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 324                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 325                         }
 326                 }
 327         }
 328
 329         $rawactor = $item->get_item_tags(NAMESPACE_ACTIVITY, 'actor');
 330
 331         if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 332                 $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 333                 if($base && count($base)) {
 334                         foreach($base as $link) {
 335                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 336                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 337                                 if(!x($res, 'author-avatar') || !$res['author-avatar']) {
 338                                         if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 339                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 340                                 }
 341                         }
 342                 }
 343         }
 344
 345         // No photo/profile-link on the item - look at the feed level
 346
 347         if((! (x($res,'author-link'))) || (! (x($res,'author-avatar')))) {
 348                 $rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 349                 if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 350                         $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 351                         foreach($base as $link) {
 352                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 353                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 354                                 if(! $res['author-avatar']) {
 355                                         if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 356                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 357                                 }
 358                         }
 359                 }
 360
 361                 $rawactor = $feed->get_feed_tags(NAMESPACE_ACTIVITY, 'subject');
 362
 363                 if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 364                         $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 365
 366                         if($base && count($base)) {
 367                                 foreach($base as $link) {
 368                                         if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 369                                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 370                                         if(! (x($res,'author-avatar'))) {
 371                                                 if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 372                                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 373                                         }
 374                                 }
 375                         }
 376                 }
 377         }
 378
 379         $apps = $item->get_item_tags(NAMESPACE_STATUSNET,'notice_info');
 380         if($apps && $apps[0]['attribs']['']['source']) {
 381                 $res['app'] = strip_tags(unxmlify($apps[0]['attribs']['']['source']));
 382                 if($res['app'] === 'web')
 383                         $res['app'] = 'OStatus';
 384         }
 385
 386         // base64 encoded json structure representing Diaspora signature
 387
 388         $dsig = $item->get_item_tags(NAMESPACE_DFRN,'diaspora_signature');
 389         if($dsig) {
 390                 $res['dsprsig'] = unxmlify($dsig[0]['data']);
 391         }
 392
 393         $dguid = $item->get_item_tags(NAMESPACE_DFRN,'diaspora_guid');
 394         if($dguid)
 395                 $res['guid'] = unxmlify($dguid[0]['data']);
 396
 397         $bm = $item->get_item_tags(NAMESPACE_DFRN,'bookmark');
 398         if($bm)
 399                 $res['bookmark'] = ((unxmlify($bm[0]['data']) === 'true') ? 1 : 0);
 400
 401
 402         /**
 403          * If there's a copy of the body content which is guaranteed to have survived mangling in transit, use it.
 404          */
 405
 406         $have_real_body = false;
 407
 408         $rawenv = $item->get_item_tags(NAMESPACE_DFRN, 'env');
 409         if($rawenv) {
 410                 $have_real_body = true;
 411                 $res['body'] = $rawenv[0]['data'];
 412                 $res['body'] = str_replace(array(' ',"\t","\r","\n"), array('','','',''),$res['body']);
 413                 // make sure nobody is trying to sneak some html tags by us
 414                 $res['body'] = notags(base64url_decode($res['body']));
 415         }
 416
 417         $maxlen = get_max_import_size();
 418         if($maxlen && (strlen($res['body']) > $maxlen))
 419                 $res['body'] = substr($res['body'],0, $maxlen);
 420
 421         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 422         // the content type. Our own network only emits text normally, though it might have been converted to
 423         // html if we used a pubsubhubbub transport. But if we see even one html tag in our text, we will
 424         // have to assume it is all html and needs to be purified.
 425
 426         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 427         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 428         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 429         // html.
 430
 431         if((strpos($res['body'],'<') !== false) && (strpos($res['body'],'>') !== false)) {
 432
 433                 $res['body'] = reltoabs($res['body'],$base_url);
 434
 435                 $res['body'] = html2bb_video($res['body']);
 436
 437                 $res['body'] = oembed_html2bbcode($res['body']);
 438
 439                 $config = HTMLPurifier_Config::createDefault();
 440                 $config->set('Cache.DefinitionImpl', null);
 441
 442                 // we shouldn't need a whitelist, because the bbcode converter
 443                 // will strip out any unsupported tags.
 444
 445                 $purifier = new HTMLPurifier($config);
 446                 $res['body'] = $purifier->purify($res['body']);
 447
 448                 $res['body'] = @html2bbcode($res['body']);
 449         }
 450         elseif(! $have_real_body) {
 451
 452                 // it's not one of our messages and it has no tags
 453                 // so it's probably just text. We'll escape it just to be safe.
 454
 455                 $res['body'] = escape_tags($res['body']);
 456         }
 457
 458         // this tag is obsolete but we keep it for really old sites
 459
 460         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 461         if($allow && $allow[0]['data'] == 1)
 462                 $res['last-child'] = 1;
 463         else
 464                 $res['last-child'] = 0;
 465
 466         $private = $item->get_item_tags(NAMESPACE_DFRN,'private');
 467         if($private && $private[0]['data'] == 1)
 468                 $res['private'] = 1;
 469         else
 470                 $res['private'] = 0;
 471
 472         $extid = $item->get_item_tags(NAMESPACE_DFRN,'extid');
 473         if($extid && $extid[0]['data'])
 474                 $res['extid'] = $extid[0]['data'];
 475
 476         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 477         if($rawlocation)
 478                 $res['location'] = unxmlify($rawlocation[0]['data']);
 479
 480
 481         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 482         if($rawcreated)
 483                 $res['created'] = unxmlify($rawcreated[0]['data']);
 484
 485
 486         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 487         if($rawedited)
 488                 $res['edited'] = unxmlify($rawedited[0]['data']);
 489
 490         if((x($res,'edited')) && (! (x($res,'created'))))
 491                 $res['created'] = $res['edited'];
 492
 493         if(! $res['created'])
 494                 $res['created'] = $item->get_date('c');
 495
 496         if(! $res['edited'])
 497                 $res['edited'] = $item->get_date('c');
 498
 499
 500         // Disallow time travelling posts
 501
 502         $d1 = strtotime($res['created']);
 503         $d2 = strtotime($res['edited']);
 504         $d3 = strtotime('now');
 505
 506         if($d1 > $d3)
 507                 $res['created'] = datetime_convert();
 508         if($d2 > $d3)
 509                 $res['edited'] = datetime_convert();
 510
 511         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 512         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 513                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 514         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 515                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 516         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 517                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 518         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 519                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 520
 521         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 522                 $base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 523
 524                 foreach($base as $link) {
 525                         if(!x($res, 'owner-avatar') || !$res['owner-avatar']) {
 526                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 527                                         $res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
 528                         }
 529                 }
 530         }
 531
 532         $rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
 533         if($rawgeo)
 534                 $res['coord'] = unxmlify($rawgeo[0]['data']);
 535
 536
 537         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 538
 539         // select between supported verbs
 540
 541         if($rawverb) {
 542                 $res['verb'] = unxmlify($rawverb[0]['data']);
 543         }
 544
 545         // translate OStatus unfollow to activity streams if it happened to get selected
 546
 547         if((x($res,'verb')) && ($res['verb'] === 'http://ostatus.org/schema/1.0/unfollow'))
 548                 $res['verb'] = ACTIVITY_UNFOLLOW;
 549
 550         $cats = $item->get_categories();
 551         if($cats) {
 552                 $tag_arr = array();
 553                 foreach($cats as $cat) {
 554                         $term = $cat->get_term();
 555                         if(! $term)
 556                                 $term = $cat->get_label();
 557                         $scheme = $cat->get_scheme();
 558                         if($scheme && $term && stristr($scheme,'X-DFRN:'))
 559                                 $tag_arr[] = substr($scheme,7,1) . '[url=' . unxmlify(substr($scheme,9)) . ']' . unxmlify($term) . '[/url]';
 560                         elseif($term)
 561                                 $tag_arr[] = notags(trim($term));
 562                 }
 563                 $res['tag'] =  implode(',', $tag_arr);
 564         }
 565
 566         $attach = $item->get_enclosures();
 567         if($attach) {
 568                 $att_arr = array();
 569                 foreach($attach as $att) {
 570                         $len   = intval($att->get_length());
 571                         $link  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_link()))));
 572                         $title = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_title()))));
 573                         $type  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_type()))));
 574                         if(strpos($type,';'))
 575                                 $type = substr($type,0,strpos($type,';'));
 576                         if((! $link) || (strpos($link,'http') !== 0))
 577                                 continue;
 578
 579                         if(! $title)
 580                                 $title = ' ';
 581                         if(! $type)
 582                                 $type = 'application/octet-stream';
 583
 584                         $att_arr[] = '[attach]href="' . $link . '" length="' . $len . '" type="' . $type . '" title="' . $title . '"[/attach]';
 585                 }
 586                 $res['attach'] = implode(',', $att_arr);
 587         }
 588
 589         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 590
 591         if($rawobj) {
 592                 $res['object'] = '<object>' . "\n";
 593                 $child = $rawobj[0]['child'];
 594                 if($child[NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 595                         $res['object-type'] = $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 596                         $res['object'] .= '<type>' . $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 597                 }
 598                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'id') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 599                         $res['object'] .= '<id>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 600                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'link') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 601                         $res['object'] .= '<link>' . encode_rel_links($child[SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 602                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'title') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 603                         $res['object'] .= '<title>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 604                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'content') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 605                         $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 606                         if(! $body)
 607                                 $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 608                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 609                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 610                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 611
 612                                 $body = html2bb_video($body);
 613
 614                                 $config = HTMLPurifier_Config::createDefault();
 615                                 $config->set('Cache.DefinitionImpl', null);
 616
 617                                 $purifier = new HTMLPurifier($config);
 618                                 $body = $purifier->purify($body);
 619                                 $body = html2bbcode($body);
 620                         }
 621
 622                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 623                 }
 624
 625                 $res['object'] .= '</object>' . "\n";
 626         }
 627
 628         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'target');
 629
 630         if($rawobj) {
 631                 $res['target'] = '<target>' . "\n";
 632                 $child = $rawobj[0]['child'];
 633                 if($child[NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 634                         $res['target'] .= '<type>' . $child[NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 635                 }
 636                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'id') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 637                         $res['target'] .= '<id>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 638                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'link') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 639                         $res['target'] .= '<link>' . encode_rel_links($child[SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 640                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'data') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 641                         $res['target'] .= '<title>' . $child[SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 642                 if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'data') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 643                         $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 644                         if(! $body)
 645                                 $body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 646                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 647                         $res['target'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 648                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 649
 650                                 $body = html2bb_video($body);
 651
 652                                 $config = HTMLPurifier_Config::createDefault();
 653                                 $config->set('Cache.DefinitionImpl', null);
 654
 655                                 $purifier = new HTMLPurifier($config);
 656                                 $body = $purifier->purify($body);
 657                                 $body = html2bbcode($body);
 658                         }
 659
 660                         $res['target'] .= '<content>' . $body . '</content>' . "\n";
 661                 }
 662
 663                 $res['target'] .= '</target>' . "\n";
 664         }
 665
 666         $arr = array('feed' => $feed, 'item' => $item, 'result' => $res);
 667
 668         call_hooks('parse_atom', $arr);
 669
 670         return $res;
 671 }
 672
 673 function encode_rel_links($links) {
 674         $o = '';
 675         if(! ((is_array($links)) && (count($links))))
 676                 return $o;
 677         foreach($links as $link) {
 678                 $o .= '<link ';
 679                 if($link['attribs']['']['rel'])
 680                         $o .= 'rel="' . $link['attribs']['']['rel'] . '" ';
 681                 if($link['attribs']['']['type'])
 682                         $o .= 'type="' . $link['attribs']['']['type'] . '" ';
 683                 if($link['attribs']['']['href'])
 684                         $o .= 'href="' . $link['attribs']['']['href'] . '" ';
 685                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['width'])
 686                         $o .= 'media:width="' . $link['attribs'][NAMESPACE_MEDIA]['width'] . '" ';
 687                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['height'])
 688                         $o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
 689                 $o .= ' />' . "\n" ;
 690         }
 691         return xmlify($o);
 692 }
 693
 694
 695
 696 function item_store($arr,$force_parent = false) {
 697
 698         // If a Diaspora signature structure was passed in, pull it out of the
 699         // item array and set it aside for later storage.
 700
 701         $dsprsig = null;
 702         if(x($arr,'dsprsig')) {
 703                 $dsprsig = json_decode(base64_decode($arr['dsprsig']));
 704                 unset($arr['dsprsig']);
 705         }
 706
 707         if(x($arr, 'gravity'))
 708                 $arr['gravity'] = intval($arr['gravity']);
 709         elseif($arr['parent-uri'] === $arr['uri'])
 710                 $arr['gravity'] = 0;
 711         elseif(activity_match($arr['verb'],ACTIVITY_POST))
 712                 $arr['gravity'] = 6;
 713         else
 714                 $arr['gravity'] = 6;   // extensible catchall
 715
 716         if(! x($arr,'type'))
 717                 $arr['type']      = 'remote';
 718
 719         // Shouldn't happen but we want to make absolutely sure it doesn't leak from a plugin.
 720
 721         if((strpos($arr['body'],'<') !== false) || (strpos($arr['body'],'>') !== false))
 722                 $arr['body'] = strip_tags($arr['body']);
 723
 724
 725         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
 726         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : random_string());
 727         $arr['extid']         = ((x($arr,'extid'))         ? notags(trim($arr['extid']))         : '');
 728         $arr['author-name']   = ((x($arr,'author-name'))   ? notags(trim($arr['author-name']))   : '');
 729         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
 730         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
 731         $arr['owner-name']    = ((x($arr,'owner-name'))    ? notags(trim($arr['owner-name']))    : '');
 732         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
 733         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
 734         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
 735         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
 736         $arr['commented']     = datetime_convert();
 737         $arr['received']      = datetime_convert();
 738         $arr['changed']       = datetime_convert();
 739         $arr['title']         = ((x($arr,'title'))         ? notags(trim($arr['title']))         : '');
 740         $arr['location']      = ((x($arr,'location'))      ? notags(trim($arr['location']))      : '');
 741         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
 742         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
 743         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
 744         $arr['deleted']       = 0;
 745         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : '');
 746         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
 747         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
 748         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
 749         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
 750         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
 751         $arr['plink']         = ((x($arr,'plink'))         ? notags(trim($arr['plink']))         : '');
 752         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
 753         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
 754         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
 755         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
 756         $arr['private']       = ((x($arr,'private'))       ? intval($arr['private'])             : 0 );
 757         $arr['bookmark']      = ((x($arr,'bookmark'))      ? intval($arr['bookmark'])            : 0 );
 758         $arr['body']          = ((x($arr,'body'))          ? trim($arr['body'])                  : '');
 759         $arr['tag']           = ((x($arr,'tag'))           ? notags(trim($arr['tag']))           : '');
 760         $arr['attach']        = ((x($arr,'attach'))        ? notags(trim($arr['attach']))        : '');
 761         $arr['app']           = ((x($arr,'app'))           ? notags(trim($arr['app']))           : '');
 762         $arr['origin']        = ((x($arr,'origin'))        ? intval($arr['origin'])              : 0 );
 763         $arr['guid']          = ((x($arr,'guid'))          ? notags(trim($arr['guid']))          : get_guid());
 764
 765         if($arr['parent-uri'] === $arr['uri']) {
 766                 $parent_id = 0;
 767                 $parent_deleted = 0;
 768                 $allow_cid = $arr['allow_cid'];
 769                 $allow_gid = $arr['allow_gid'];
 770                 $deny_cid  = $arr['deny_cid'];
 771                 $deny_gid  = $arr['deny_gid'];
 772         }
 773         else {
 774
 775                 // find the parent and snarf the item id and ACL's
 776                 // and anything else we need to inherit
 777
 778                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d ORDER BY `id` ASC LIMIT 1",
 779                         dbesc($arr['parent-uri']),
 780                         intval($arr['uid'])
 781                 );
 782
 783                 if(count($r)) {
 784
 785                         // is the new message multi-level threaded?
 786                         // even though we don't support it now, preserve the info
 787                         // and re-attach to the conversation parent.
 788
 789                         if($r[0]['uri'] != $r[0]['parent-uri']) {
 790                                 $arr['thr-parent'] = $arr['parent-uri'];
 791                                 $arr['parent-uri'] = $r[0]['parent-uri'];
 792                                 $z = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `parent-uri` = '%s' AND `uid` = %d
 793                                         ORDER BY `id` ASC LIMIT 1",
 794                                         dbesc($r[0]['parent-uri']),
 795                                         dbesc($r[0]['parent-uri']),
 796                                         intval($arr['uid'])
 797                                 );
 798                                 if($z && count($z))
 799                                         $r = $z;
 800                         }
 801
 802                         $parent_id      = $r[0]['id'];
 803                         $parent_deleted = $r[0]['deleted'];
 804                         $allow_cid      = $r[0]['allow_cid'];
 805                         $allow_gid      = $r[0]['allow_gid'];
 806                         $deny_cid       = $r[0]['deny_cid'];
 807                         $deny_gid       = $r[0]['deny_gid'];
 808                         $arr['wall']    = $r[0]['wall'];
 809
 810                         // if the parent is private, force privacy for the entire conversation
 811                         // This differs from the above settings as it subtly allows comments from
 812                         // email correspondents to be private even if the overall thread is not.
 813
 814                         if($r[0]['private'])
 815                                 $arr['private'] = 1;
 816
 817                 }
 818                 else {
 819
 820                         // Allow one to see reply tweets from status.net even when
 821                         // we don't have or can't see the original post.
 822
 823                         if($force_parent) {
 824                                 logger('item_store: $force_parent=true, reply converted to top-level post.');
 825                                 $parent_id = 0;
 826                                 $arr['thr-parent'] = $arr['parent-uri'];
 827                                 $arr['parent-uri'] = $arr['uri'];
 828                                 $arr['gravity'] = 0;
 829                         }
 830                         else {
 831                                 logger('item_store: item parent was not found - ignoring item');
 832                                 return 0;
 833                         }
 834
 835                         $parent_deleted = 0;
 836                 }
 837         }
 838
 839         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 840                 dbesc($arr['uri']),
 841                 intval($arr['uid'])
 842         );
 843         if($r && count($r)) {
 844                 logger('item-store: duplicate item ignored. ' . print_r($arr,true));
 845                 return 0;
 846         }
 847
 848         call_hooks('post_remote',$arr);
 849
 850         if(x($arr,'cancel')) {
 851                 logger('item_store: post cancelled by plugin.');
 852                 return 0;
 853         }
 854
 855         dbesc_array($arr);
 856
 857         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
 858
 859         $r = dbq("INSERT INTO `item` (`"
 860                         . implode("`, `", array_keys($arr))
 861                         . "`) VALUES ('"
 862                         . implode("', '", array_values($arr))
 863                         . "')" );
 864
 865         // find the item we just created
 866
 867         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d ORDER BY `id` ASC ",
 868                 $arr['uri'],           // already dbesc'd
 869                 intval($arr['uid'])
 870         );
 871
 872         if(count($r)) {
 873                 $current_post = $r[0]['id'];
 874                 logger('item_store: created item ' . $current_post);
 875         }
 876         else {
 877                 logger('item_store: could not locate created item');
 878                 return 0;
 879         }
 880         if(count($r) > 1) {
 881                 logger('item_store: duplicated post occurred. Removing duplicates.');
 882                 q("DELETE FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `id` != %d ",
 883                         $arr['uri'],
 884                         intval($arr['uid']),
 885                         intval($current_post)
 886                 );
 887         }
 888
 889         if((! $parent_id) || ($arr['parent-uri'] === $arr['uri']))
 890                 $parent_id = $current_post;
 891
 892         if(strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid))
 893                 $private = 1;
 894         else
 895                 $private = $arr['private'];
 896
 897         // Set parent id - and also make sure to inherit the parent's ACL's.
 898
 899         $r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
 900                 `deny_cid` = '%s', `deny_gid` = '%s', `private` = %d, `deleted` = %d WHERE `id` = %d LIMIT 1",
 901                 intval($parent_id),
 902                 dbesc($allow_cid),
 903                 dbesc($allow_gid),
 904                 dbesc($deny_cid),
 905                 dbesc($deny_gid),
 906                 intval($private),
 907                 intval($parent_deleted),
 908                 intval($current_post)
 909         );
 910
 911         // update the commented timestamp on the parent
 912
 913         q("UPDATE `item` set `commented` = '%s', `changed` = '%s' WHERE `id` = %d LIMIT 1",
 914                 dbesc(datetime_convert()),
 915                 dbesc(datetime_convert()),
 916                 intval($parent_id)
 917         );
 918
 919         if($dsprsig) {
 920                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
 921                         intval($current_post),
 922                         dbesc($dsprsig->signed_text),
 923                         dbesc($dsprsig->signature),
 924                         dbesc($dsprsig->signer)
 925                 );
 926         }
 927
 928
 929         /**
 930          * If this is now the last-child, force all _other_ children of this parent to *not* be last-child
 931          */
 932
 933         if($arr['last-child']) {
 934                 $r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d",
 935                         dbesc($arr['uri']),
 936                         intval($arr['uid']),
 937                         intval($current_post)
 938                 );
 939         }
 940
 941         tag_deliver($arr['uid'],$current_post);
 942
 943         return $current_post;
 944 }
 945
 946 function get_item_contact($item,$contacts) {
 947         if(! count($contacts) || (! is_array($item)))
 948                 return false;
 949         foreach($contacts as $contact) {
 950                 if($contact['id'] == $item['contact-id']) {
 951                         return $contact;
 952                         break; // NOTREACHED
 953                 }
 954         }
 955         return false;
 956 }
 957
 958
 959 function tag_deliver($uid,$item_id) {
 960
 961         // look for mention tags and setup a second delivery chain for forum/community posts if appropriate
 962
 963         $a = get_app();
 964
 965         $mention = false;
 966
 967         $u = q("select * from user where uid = %d limit 1",
 968                 intval($uid)
 969         );
 970         if(! count($u))
 971                 return;
 972
 973         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
 974         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
 975
 976
 977         $i = q("select * from item where id = %d and uid = %d limit 1",
 978                 intval($item_id),
 979                 intval($uid)
 980         );
 981         if(! count($i))
 982                 return;
 983
 984         $item = $i[0];
 985
 986         $link = normalise_link($a->get_baseurl() . '/profile/' . $u[0]['nickname']);
 987
 988         // Diaspora uses their own hardwired link URL in @-tags
 989         // instead of the one we supply with webfinger
 990
 991         $dlink = normalise_link($a->get_baseurl() . '/u/' . $u[0]['nickname']);
 992
 993         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
 994         if($cnt) {
 995                 foreach($matches as $mtch) {
 996                         if(link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
 997                                 $mention = true;
 998                                 logger('tag_deliver: mention found: ' . $mtch[2]);
 999                         }
1000                 }
1001         }
1002
1003         if(! $mention)
1004                 return;
1005
1006         // send a notification
1007
1008         require_once('include/enotify.php');
1009         notification(array(
1010                 'type'         => NOTIFY_TAGSELF,
1011                 'notify_flags' => $u[0]['notify-flags'],
1012                 'language'     => $u[0]['language'],
1013                 'to_name'      => $u[0]['username'],
1014                 'to_email'     => $u[0]['email'],
1015                 'uid'          => $u[0]['uid'],
1016                 'item'         => $item,
1017                 'link'         => $a->get_baseurl() . '/display/' . $u[0]['nickname'] . '/' . $item['id'],
1018                 'source_name'  => $item['author-name'],
1019                 'source_link'  => $item['author-link'],
1020                 'source_photo' => $item['author-avatar'],
1021                 'verb'         => ACTIVITY_TAG,
1022                 'otype'        => 'item'
1023         ));
1024
1025         if((! $community_page) && (! $prvgroup))
1026                 return;
1027
1028
1029         // tgroup delivery - setup a second delivery chain
1030         // prevent delivery looping - only proceed
1031         // if the message originated elsewhere and is a top-level post
1032
1033         if(($item['wall']) || ($item['origin']) || ($item['id'] != $item['parent']))
1034                 return;
1035
1036         // now change this copy of the post to a forum head message and deliver to all the tgroup members
1037
1038
1039         $c = q("select name, url, thumb from contact where self = 1 and uid = %d limit 1",
1040                 intval($u[0]['uid'])
1041         );
1042         if(! count($c))
1043                 return;
1044
1045         // also reset all the privacy bits to the forum default permissions
1046
1047         $private = ($u[0]['allow_cid'] || $u[0]['allow_gid'] || $u[0]['deny_cid'] || $u[0]['deny_gid']) ? 1 : 0;
1048
1049         $forum_mode = (($prvgroup) ? 2 : 1);
1050
1051         q("update item set wall = 1, origin = 1, forum_mode = %d, `owner-name` = '%s', `owner-link` = '%s', `owner-avatar` = '%s',
1052                 `private` = %d, `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s'  where id = %d limit 1",
1053                 intval($forum_mode),
1054                 dbesc($c[0]['name']),
1055                 dbesc($c[0]['url']),
1056                 dbesc($c[0]['thumb']),
1057                 intval($private),
1058                 dbesc($u[0]['allow_cid']),
1059                 dbesc($u[0]['allow_gid']),
1060                 dbesc($u[0]['deny_cid']),
1061                 dbesc($u[0]['deny_gid']),
1062                 intval($item_id)
1063         );
1064
1065         proc_run('php','include/notifier.php','tgroup',$item_id);
1066
1067 }
1068
1069
1070
1071
1072
1073
1074 function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
1075
1076         $a = get_app();
1077
1078         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
1079
1080         if($contact['duplex'] && $contact['dfrn-id'])
1081                 $idtosend = '0:' . $orig_id;
1082         if($contact['duplex'] && $contact['issued-id'])
1083                 $idtosend = '1:' . $orig_id;
1084
1085         $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
1086
1087         $rino_enable = get_config('system','rino_encrypt');
1088
1089         if(! $rino_enable)
1090                 $rino = 0;
1091
1092         $ssl_val = intval(get_config('system','ssl_policy'));
1093         $ssl_policy = '';
1094
1095         switch($ssl_val){
1096                 case SSL_POLICY_FULL:
1097                         $ssl_policy = 'full';
1098                         break;
1099                 case SSL_POLICY_SELFSIGN:
1100                         $ssl_policy = 'self';
1101                         break;
1102                 case SSL_POLICY_NONE:
1103                 default:
1104                         $ssl_policy = 'none';
1105                         break;
1106         }
1107
1108         $url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino=1' : '');
1109
1110         logger('dfrn_deliver: ' . $url);
1111
1112         $xml = fetch_url($url);
1113
1114         $curl_stat = $a->get_curl_code();
1115         if(! $curl_stat)
1116                 return(-1); // timed out
1117
1118         logger('dfrn_deliver: ' . $xml, LOGGER_DATA);
1119
1120         if(! $xml)
1121                 return 3;
1122
1123         if(strpos($xml,'<?xml') === false) {
1124                 logger('dfrn_deliver: no valid XML returned');
1125                 logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA);
1126                 return 3;
1127         }
1128
1129         $res = parse_xml_string($xml);
1130
1131         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
1132                 return (($res->status) ? $res->status : 3);
1133
1134         $postvars     = array();
1135         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
1136         $challenge    = hex2bin((string) $res->challenge);
1137         $perm         = (($res->perm) ? $res->perm : null);
1138         $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0);
1139         $rino_allowed = ((intval($res->rino) === 1) ? 1 : 0);
1140         $page         = (($owner['page-flags'] == PAGE_COMMUNITY) ? 1 : 0);
1141
1142         if($owner['page-flags'] == PAGE_PRVGROUP)
1143                 $page = 2;
1144
1145         $final_dfrn_id = '';
1146
1147         if($perm) {
1148                 if((($perm == 'rw') && (! intval($contact['writable'])))
1149                 || (($perm == 'r') && (intval($contact['writable'])))) {
1150                         q("update contact set writable = %d where id = %d limit 1",
1151                                 intval(($perm == 'rw') ? 1 : 0),
1152                                 intval($contact['id'])
1153                         );
1154                         $contact['writable'] = (string) 1 - intval($contact['writable']);
1155                 }
1156         }
1157
1158         if(($contact['duplex'] && strlen($contact['pubkey']))
1159                 || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey']))
1160                 || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) {
1161                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
1162                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
1163         }
1164         else {
1165                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
1166                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
1167         }
1168
1169         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
1170
1171         if(strpos($final_dfrn_id,':') == 1)
1172                 $final_dfrn_id = substr($final_dfrn_id,2);
1173
1174         if($final_dfrn_id != $orig_id) {
1175                 logger('dfrn_deliver: wrong dfrn_id.');
1176                 // did not decode properly - cannot trust this site
1177                 return 3;
1178         }
1179
1180         $postvars['dfrn_id']      = $idtosend;
1181         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
1182         if($dissolve)
1183                 $postvars['dissolve'] = '1';
1184
1185
1186         if((($contact['rel']) && ($contact['rel'] != CONTACT_IS_SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
1187                 $postvars['data'] = $atom;
1188                 $postvars['perm'] = 'rw';
1189         }
1190         else {
1191                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
1192                 $postvars['perm'] = 'r';
1193         }
1194
1195         $postvars['ssl_policy'] = $ssl_policy;
1196
1197         if($page)
1198                 $postvars['page'] = $page;
1199
1200         if($rino && $rino_allowed && (! $dissolve)) {
1201                 $key = substr(random_string(),0,16);
1202                 $data = bin2hex(aes_encrypt($postvars['data'],$key));
1203                 $postvars['data'] = $data;
1204                 logger('rino: sent key = ' . $key, LOGGER_DEBUG);
1205
1206
1207                 if($dfrn_version >= 2.1) {
1208                         if(($contact['duplex'] && strlen($contact['pubkey']))
1209                                 || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey']))
1210                                 || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) {
1211
1212                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
1213                         }
1214                         else {
1215                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
1216                         }
1217                 }
1218                 else {
1219                         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
1220                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
1221                         }
1222                         else {
1223                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
1224                         }
1225                 }
1226
1227                 logger('md5 rawkey ' . md5($postvars['key']));
1228
1229                 $postvars['key'] = bin2hex($postvars['key']);
1230         }
1231
1232         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
1233
1234         $xml = post_url($contact['notify'],$postvars);
1235
1236         logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
1237
1238         $curl_stat = $a->get_curl_code();
1239         if((! $curl_stat) || (! strlen($xml)))
1240                 return(-1); // timed out
1241
1242         if(($curl_stat == 503) && (stristr($a->get_curl_headers(),'retry-after')))
1243                 return(-1);
1244
1245         if(strpos($xml,'<?xml') === false) {
1246                 logger('dfrn_deliver: phase 2: no valid XML returned');
1247                 logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA);
1248                 return 3;
1249         }
1250
1251         $res = parse_xml_string($xml);
1252
1253         return $res->status;
1254 }
1255
1256
1257 /**
1258  *
1259  * consume_feed - process atom feed and update anything/everything we might need to update
1260  *
1261  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
1262  *
1263  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
1264  *             It is this person's stuff that is going to be updated.
1265  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
1266  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
1267  *             have a contact record.
1268  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
1269  *        might not) try and subscribe to it.
1270  * $datedir sorts in reverse order
1271  * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
1272  *      imported prior to its children being seen in the stream unless we are certain
1273  *      of how the feed is arranged/ordered.
1274  * With $pass = 1, we only pull parent items out of the stream.
1275  * With $pass = 2, we only pull children (comments/likes).
1276  *
1277  * So running this twice, first with pass 1 and then with pass 2 will do the right
1278  * thing regardless of feed ordering. This won't be adequate in a fully-threaded
1279  * model where comments can have sub-threads. That would require some massive sorting
1280  * to get all the feed items into a mostly linear ordering, and might still require
1281  * recursion.
1282  */
1283
1284 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0) {
1285
1286         require_once('library/simplepie/simplepie.inc');
1287
1288         if(! strlen($xml)) {
1289                 logger('consume_feed: empty input');
1290                 return;
1291         }
1292
1293         $feed = new SimplePie();
1294         $feed->set_raw_data($xml);
1295         if($datedir)
1296                 $feed->enable_order_by_date(true);
1297         else
1298                 $feed->enable_order_by_date(false);
1299         $feed->init();
1300
1301         if($feed->error())
1302                 logger('consume_feed: Error parsing XML: ' . $feed->error());
1303
1304         $permalink = $feed->get_permalink();
1305
1306         // Check at the feed level for updated contact name and/or photo
1307
1308         $name_updated  = '';
1309         $new_name = '';
1310         $photo_timestamp = '';
1311         $photo_url = '';
1312         $birthday = '';
1313
1314         $hubs = $feed->get_links('hub');
1315         logger('consume_feed: hubs: ' . print_r($hubs,true), LOGGER_DATA);
1316
1317         if(count($hubs))
1318                 $hub = implode(',', $hubs);
1319
1320         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
1321         if(! $rawtags)
1322                 $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
1323         if($rawtags) {
1324                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
1325                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
1326                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
1327                         $new_name = $elems['name'][0]['data'];
1328                 }
1329                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
1330                         $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
1331                         $photo_url = $elems['link'][0]['attribs']['']['href'];
1332                 }
1333
1334                 if((x($rawtags[0]['child'], NAMESPACE_DFRN)) && (x($rawtags[0]['child'][NAMESPACE_DFRN],'birthday'))) {
1335                         $birthday = datetime_convert('UTC','UTC', $rawtags[0]['child'][NAMESPACE_DFRN]['birthday'][0]['data']);
1336                 }
1337         }
1338
1339         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
1340                 logger('consume_feed: Updating photo for ' . $contact['name']);
1341                 require_once("Photo.php");
1342                 $photo_failure = false;
1343                 $have_photo = false;
1344
1345                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
1346                         intval($contact['id']),
1347                         intval($contact['uid'])
1348                 );
1349                 if(count($r)) {
1350                         $resource_id = $r[0]['resource-id'];
1351                         $have_photo = true;
1352                 }
1353                 else {
1354                         $resource_id = photo_new_resource();
1355                 }
1356
1357                 $img_str = fetch_url($photo_url,true);
1358                 // guess mimetype from headers or filename
1359                 $type = guess_image_type($photo_url,true);
1360
1361
1362                 $img = new Photo($img_str, $type);
1363                 if($img->is_valid()) {
1364                         if($have_photo) {
1365                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
1366                                         dbesc($resource_id),
1367                                         intval($contact['id']),
1368                                         intval($contact['uid'])
1369                                 );
1370                         }
1371
1372                         $img->scaleImageSquare(175);
1373
1374                         $hash = $resource_id;
1375                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 4);
1376
1377                         $img->scaleImage(80);
1378                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 5);
1379
1380                         $img->scaleImage(48);
1381                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 6);
1382
1383                         $a = get_app();
1384
1385                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
1386                                 WHERE `uid` = %d AND `id` = %d LIMIT 1",
1387                                 dbesc(datetime_convert()),
1388                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.'.$img->getExt()),
1389                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.'.$img->getExt()),
1390                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.'.$img->getExt()),
1391                                 intval($contact['uid']),
1392                                 intval($contact['id'])
1393                         );
1394                 }
1395         }
1396
1397         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
1398                 $r = q("select * from contact where uid = %d and id = %d limit 1",
1399                         intval($contact['uid']),
1400                         intval($contact['id'])
1401                 );
1402
1403                 $x = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1404                         dbesc(notags(trim($new_name))),
1405                         dbesc(datetime_convert()),
1406                         intval($contact['uid']),
1407                         intval($contact['id'])
1408                 );
1409
1410                 // do our best to update the name on content items
1411
1412                 if(count($r)) {
1413                         q("update item set `author-name` = '%s' where `author-name` = '%s' and `author-link` = '%s' and uid = %d",
1414                                 dbesc(notags(trim($new_name))),
1415                                 dbesc($r[0]['name']),
1416                                 dbesc($r[0]['url']),
1417                                 intval($contact['uid'])
1418                         );
1419                 }
1420         }
1421
1422         if(strlen($birthday)) {
1423                 if(substr($birthday,0,4) != $contact['bdyear']) {
1424                         logger('consume_feed: updating birthday: ' . $birthday);
1425
1426                         /**
1427                          *
1428                          * Add new birthday event for this person
1429                          *
1430                          * $bdtext is just a readable placeholder in case the event is shared
1431                          * with others. We will replace it during presentation to our $importer
1432                          * to contain a sparkle link and perhaps a photo.
1433                          *
1434                          */
1435
1436                         $bdtext = t('Birthday:') . ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ;
1437
1438
1439                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`desc`,`type`)
1440                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s' ) ",
1441                                 intval($contact['uid']),
1442                                 intval($contact['id']),
1443                                 dbesc(datetime_convert()),
1444                                 dbesc(datetime_convert()),
1445                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
1446                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
1447                                 dbesc($bdtext),
1448                                 dbesc('birthday')
1449                         );
1450
1451
1452                         // update bdyear
1453
1454                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1455                                 dbesc(substr($birthday,0,4)),
1456                                 intval($contact['uid']),
1457                                 intval($contact['id'])
1458                         );
1459
1460                         // This function is called twice without reloading the contact
1461                         // Make sure we only create one event. This is why &$contact
1462                         // is a reference var in this function
1463
1464                         $contact['bdyear'] = substr($birthday,0,4);
1465                 }
1466
1467         }
1468
1469         $community_page = 0;
1470         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
1471         if($rawtags) {
1472                 $community_page = intval($rawtags[0]['data']);
1473         }
1474         if(is_array($contact) && intval($contact['forum']) != $community_page) {
1475                 q("update contact set forum = %d where id = %d limit 1",
1476                         intval($community_page),
1477                         intval($contact['id'])
1478                 );
1479                 $contact['forum'] = (string) $community_page;
1480         }
1481
1482
1483         // process any deleted entries
1484
1485         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
1486         if(is_array($del_entries) && count($del_entries) && $pass != 2) {
1487                 foreach($del_entries as $dentry) {
1488                         $deleted = false;
1489                         if(isset($dentry['attribs']['']['ref'])) {
1490                                 $uri = $dentry['attribs']['']['ref'];
1491                                 $deleted = true;
1492                                 if(isset($dentry['attribs']['']['when'])) {
1493                                         $when = $dentry['attribs']['']['when'];
1494                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
1495                                 }
1496                                 else
1497                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
1498                         }
1499                         if($deleted && is_array($contact)) {
1500                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` left join `contact` on `item`.`contact-id` = `contact`.`id`
1501                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
1502                                         dbesc($uri),
1503                                         intval($importer['uid']),
1504                                         intval($contact['id'])
1505                                 );
1506                                 if(count($r)) {
1507                                         $item = $r[0];
1508
1509                                         if(! $item['deleted'])
1510                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
1511
1512                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
1513                                                 $xo = parse_xml_string($item['object'],false);
1514                                                 $xt = parse_xml_string($item['target'],false);
1515                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
1516                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
1517                                                                 dbesc($xt->id),
1518                                                                 intval($importer['importer_uid'])
1519                                                         );
1520                                                         if(count($i)) {
1521
1522                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
1523
1524                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
1525                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
1526                                                                 $author_copy = (($item['origin']) ? true : false);
1527
1528                                                                 if($owner_remove && $author_copy)
1529                                                                         continue;
1530                                                                 if($author_remove || $owner_remove) {
1531                                                                         $tags = explode(',',$i[0]['tag']);
1532                                                                         $newtags = array();
1533                                                                         if(count($tags)) {
1534                                                                                 foreach($tags as $tag)
1535                                                                                         if(trim($tag) !== trim($xo->body))
1536                                                                                                 $newtags[] = trim($tag);
1537                                                                         }
1538                                                                         q("update item set tag = '%s' where id = %d limit 1",
1539                                                                                 dbesc(implode(',',$newtags)),
1540                                                                                 intval($i[0]['id'])
1541                                                                         );
1542                                                                 }
1543                                                         }
1544                                                 }
1545                                         }
1546
1547                                         if($item['uri'] == $item['parent-uri']) {
1548                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1549                                                         `body` = '', `title` = ''
1550                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
1551                                                         dbesc($when),
1552                                                         dbesc(datetime_convert()),
1553                                                         dbesc($item['uri']),
1554                                                         intval($importer['uid'])
1555                                                 );
1556                                         }
1557                                         else {
1558                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1559                                                         `body` = '', `title` = ''
1560                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1561                                                         dbesc($when),
1562                                                         dbesc(datetime_convert()),
1563                                                         dbesc($uri),
1564                                                         intval($importer['uid'])
1565                                                 );
1566                                                 if($item['last-child']) {
1567                                                         // ensure that last-child is set in case the comment that had it just got wiped.
1568                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1569                                                                 dbesc(datetime_convert()),
1570                                                                 dbesc($item['parent-uri']),
1571                                                                 intval($item['uid'])
1572                                                         );
1573                                                         // who is the last child now?
1574                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `moderated` = 0 AND `uid` = %d
1575                                                                 ORDER BY `created` DESC LIMIT 1",
1576                                                                         dbesc($item['parent-uri']),
1577                                                                         intval($importer['uid'])
1578                                                         );
1579                                                         if(count($r)) {
1580                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
1581                                                                         intval($r[0]['id'])
1582                                                                 );
1583                                                         }
1584                                                 }
1585                                         }
1586                                 }
1587                         }
1588                 }
1589         }
1590
1591         // Now process the feed
1592
1593         if($feed->get_item_quantity()) {
1594
1595                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
1596
1597         // in inverse date order
1598                 if ($datedir)
1599                         $items = array_reverse($feed->get_items());
1600                 else
1601                         $items = $feed->get_items();
1602
1603
1604                 foreach($items as $item) {
1605
1606                         $is_reply = false;
1607                         $item_id = $item->get_id();
1608                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
1609                         if(isset($rawthread[0]['attribs']['']['ref'])) {
1610                                 $is_reply = true;
1611                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
1612                         }
1613
1614                         if(($is_reply) && is_array($contact)) {
1615
1616                                 if($pass == 1)
1617                                         continue;
1618
1619                                 // Have we seen it? If not, import it.
1620
1621                                 $item_id  = $item->get_id();
1622                                 $datarray = get_atom_elements($feed,$item);
1623
1624
1625                                 if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
1626                                         $datarray['author-name'] = $contact['name'];
1627                                 if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
1628                                         $datarray['author-link'] = $contact['url'];
1629                                 if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
1630                                         $datarray['author-avatar'] = $contact['thumb'];
1631
1632                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
1633                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
1634                                         continue;
1635                                 }
1636
1637                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1638                                         dbesc($item_id),
1639                                         intval($importer['uid'])
1640                                 );
1641
1642                                 // Update content if 'updated' changes
1643
1644                                 if(count($r)) {
1645                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
1646
1647                                                 // do not accept (ignore) an earlier edit than one we currently have.
1648                                                 if(datetime_convert('UTC','UTC',$datarray['edited'] < $r[0]['edited']))
1649                                                         continue;
1650
1651                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1652                                                         dbesc($datarray['title']),
1653                                                         dbesc($datarray['body']),
1654                                                         dbesc($datarray['tag']),
1655                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
1656                                                         dbesc($item_id),
1657                                                         intval($importer['uid'])
1658                                                 );
1659                                         }
1660
1661                                         // update last-child if it changes
1662
1663                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1664                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
1665                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1666                                                         dbesc(datetime_convert()),
1667                                                         dbesc($parent_uri),
1668                                                         intval($importer['uid'])
1669                                                 );
1670                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1671                                                         intval($allow[0]['data']),
1672                                                         dbesc(datetime_convert()),
1673                                                         dbesc($item_id),
1674                                                         intval($importer['uid'])
1675                                                 );
1676                                         }
1677                                         continue;
1678                                 }
1679
1680                                 $force_parent = false;
1681                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
1682                                         if($contact['network'] === NETWORK_OSTATUS)
1683                                                 $force_parent = true;
1684                                         if(strlen($datarray['title']))
1685                                                 unset($datarray['title']);
1686                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1687                                                 dbesc(datetime_convert()),
1688                                                 dbesc($parent_uri),
1689                                                 intval($importer['uid'])
1690                                         );
1691                                         $datarray['last-child'] = 1;
1692                                 }
1693
1694                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
1695                                         // one way feed - no remote comment ability
1696                                         $datarray['last-child'] = 0;
1697                                 }
1698                                 $datarray['parent-uri'] = $parent_uri;
1699                                 $datarray['uid'] = $importer['uid'];
1700                                 $datarray['contact-id'] = $contact['id'];
1701                                 if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
1702                                         $datarray['type'] = 'activity';
1703                                         $datarray['gravity'] = GRAVITY_LIKE;
1704                                         // only one like or dislike per person
1705                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 limit 1",
1706                                                 intval($datarray['uid']),
1707                                                 intval($datarray['contact-id']),
1708                                                 dbesc($datarray['verb'])
1709                                         );
1710                                         if($r && count($r))
1711                                                 continue;
1712                                 }
1713
1714                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
1715                                         $xo = parse_xml_string($datarray['object'],false);
1716                                         $xt = parse_xml_string($datarray['target'],false);
1717
1718                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
1719                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
1720                                                         dbesc($xt->id),
1721                                                         intval($importer['importer_uid'])
1722                                                 );
1723                                                 if(! count($r))
1724                                                         continue;
1725
1726                                                 // extract tag, if not duplicate, add to parent item
1727                                                 if($xo->id && $xo->content) {
1728                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
1729                                                         if(! (stristr($r[0]['tag'],$newtag))) {
1730                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d LIMIT 1",
1731                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . $newtag),
1732                                                                         intval($r[0]['id'])
1733                                                                 );
1734                                                         }
1735                                                 }
1736                                         }
1737                                 }
1738
1739                                 $r = item_store($datarray,$force_parent);
1740                                 continue;
1741                         }
1742
1743                         else {
1744
1745                                 // Head post of a conversation. Have we seen it? If not, import it.
1746
1747                                 $item_id  = $item->get_id();
1748
1749                                 $datarray = get_atom_elements($feed,$item);
1750
1751                                 if(is_array($contact)) {
1752                                         if((! x($datarray,'author-name')) && ($contact['network'] != NETWORK_DFRN))
1753                                                 $datarray['author-name'] = $contact['name'];
1754                                         if((! x($datarray,'author-link')) && ($contact['network'] != NETWORK_DFRN))
1755                                                 $datarray['author-link'] = $contact['url'];
1756                                         if((! x($datarray,'author-avatar')) && ($contact['network'] != NETWORK_DFRN))
1757                                                 $datarray['author-avatar'] = $contact['thumb'];
1758                                 }
1759
1760                                 if((! x($datarray,'author-name')) || (! x($datarray,'author-link'))) {
1761                                         logger('consume_feed: no author information! ' . print_r($datarray,true));
1762                                         continue;
1763                                 }
1764
1765                                 // special handling for events
1766
1767                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
1768                                         $ev = bbtoevent($datarray['body']);
1769                                         if(x($ev,'desc') && x($ev,'start')) {
1770                                                 $ev['uid'] = $importer['uid'];
1771                                                 $ev['uri'] = $item_id;
1772                                                 $ev['edited'] = $datarray['edited'];
1773                                                 $ev['private'] = $datarray['private'];
1774
1775                                                 if(is_array($contact))
1776                                                         $ev['cid'] = $contact['id'];
1777                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1778                                                         dbesc($item_id),
1779                                                         intval($importer['uid'])
1780                                                 );
1781                                                 if(count($r))
1782                                                         $ev['id'] = $r[0]['id'];
1783                                                 $xyz = event_store($ev);
1784                                                 continue;
1785                                         }
1786                                 }
1787
1788                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1789                                         dbesc($item_id),
1790                                         intval($importer['uid'])
1791                                 );
1792
1793                                 // Update content if 'updated' changes
1794
1795                                 if(count($r)) {
1796                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
1797
1798                                                 // do not accept (ignore) an earlier edit than one we currently have.
1799                                                 if(datetime_convert('UTC','UTC',$datarray['edited'] < $r[0]['edited']))
1800                                                         continue;
1801
1802                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1803                                                         dbesc($datarray['title']),
1804                                                         dbesc($datarray['body']),
1805                                                         dbesc($datarray['tag']),
1806                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
1807                                                         dbesc($item_id),
1808                                                         intval($importer['uid'])
1809                                                 );
1810                                         }
1811
1812                                         // update last-child if it changes
1813
1814                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1815                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
1816                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1817                                                         intval($allow[0]['data']),
1818                                                         dbesc(datetime_convert()),
1819                                                         dbesc($item_id),
1820                                                         intval($importer['uid'])
1821                                                 );
1822                                         }
1823                                         continue;
1824                                 }
1825
1826                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
1827                                         logger('consume-feed: New follower');
1828                                         new_follower($importer,$contact,$datarray,$item);
1829                                         return;
1830                                 }
1831                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
1832                                         lose_follower($importer,$contact,$datarray,$item);
1833                                         return;
1834                                 }
1835
1836                                 if(activity_match($datarray['verb'],ACTIVITY_REQ_FRIEND)) {
1837                                         logger('consume-feed: New friend request');
1838                                         new_follower($importer,$contact,$datarray,$item,true);
1839                                         return;
1840                                 }
1841                                 if(activity_match($datarray['verb'],ACTIVITY_UNFRIEND))  {
1842                                         lose_sharer($importer,$contact,$datarray,$item);
1843                                         return;
1844                                 }
1845
1846
1847                                 if(! is_array($contact))
1848                                         return;
1849
1850                                 if($contact['network'] === NETWORK_OSTATUS || stristr($contact['url'],'twitter.com')) {
1851                                         if(strlen($datarray['title']))
1852                                                 unset($datarray['title']);
1853                                         $datarray['last-child'] = 1;
1854                                 }
1855
1856                                 if($contact['network'] === NETWORK_FEED) {
1857                                         if(! strlen($contact['notify'])) {
1858                                                 // one way feed - no remote comment ability
1859                                                 $datarray['last-child'] = 0;
1860                                         }
1861                                         $datarray['private'] = 1;
1862                                 }
1863
1864                                 // This is my contact on another system, but it's really me.
1865                                 // Turn this into a wall post.
1866
1867                                 if($contact['remote_self'])
1868                                         $datarray['wall'] = 1;
1869
1870                                 $datarray['parent-uri'] = $item_id;
1871                                 $datarray['uid'] = $importer['uid'];
1872                                 $datarray['contact-id'] = $contact['id'];
1873
1874                                 if(! link_compare($datarray['owner-link'],$contact['url'])) {
1875                                         // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
1876                                         // but otherwise there's a possible data mixup on the sender's system.
1877                                         // the tgroup delivery code called from item_store will correct it if it's a forum,
1878                                         // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
1879                                         logger('consume_feed: Correcting item owner.', LOGGER_DEBUG);
1880                                         $datarray['owner-name']   = $contact['name'];
1881                                         $datarray['owner-link']   = $contact['url'];
1882                                         $datarray['owner-avatar'] = $contact['thumb'];
1883                                 }
1884
1885                                 $r = item_store($datarray);
1886                                 continue;
1887
1888                         }
1889                 }
1890         }
1891 }
1892
1893 function local_delivery($importer,$data) {
1894
1895         $a = get_app();
1896
1897         if($importer['readonly']) {
1898                 // We aren't receiving stuff from this person. But we will quietly ignore them
1899                 // rather than a blatant "go away" message.
1900                 logger('local_delivery: ignoring');
1901                 return 0;
1902                 //NOTREACHED
1903         }
1904
1905         // Consume notification feed. This may differ from consuming a public feed in several ways
1906         // - might contain email or friend suggestions
1907         // - might contain remote followup to our message
1908         //              - in which case we need to accept it and then notify other conversants
1909         // - we may need to send various email notifications
1910
1911         $feed = new SimplePie();
1912         $feed->set_raw_data($data);
1913         $feed->enable_order_by_date(false);
1914         $feed->init();
1915
1916 /*
1917         // Currently unsupported - needs a lot of work
1918         $reloc = $feed->get_feed_tags( NAMESPACE_DFRN, 'relocate' );
1919         if(isset($reloc[0]['child'][NAMESPACE_DFRN])) {
1920                 $base = $reloc[0]['child'][NAMESPACE_DFRN];
1921                 $newloc = array();
1922                 $newloc['uid'] = $importer['importer_uid'];
1923                 $newloc['cid'] = $importer['id'];
1924                 $newloc['name'] = notags(unxmlify($base['name'][0]['data']));
1925                 $newloc['photo'] = notags(unxmlify($base['photo'][0]['data']));
1926                 $newloc['url'] = notags(unxmlify($base['url'][0]['data']));
1927                 $newloc['request'] = notags(unxmlify($base['request'][0]['data']));
1928                 $newloc['confirm'] = notags(unxmlify($base['confirm'][0]['data']));
1929                 $newloc['notify'] = notags(unxmlify($base['notify'][0]['data']));
1930                 $newloc['poll'] = notags(unxmlify($base['poll'][0]['data']));
1931                 $newloc['site-pubkey'] = notags(unxmlify($base['site-pubkey'][0]['data']));
1932                 $newloc['pubkey'] = notags(unxmlify($base['pubkey'][0]['data']));
1933                 $newloc['prvkey'] = notags(unxmlify($base['prvkey'][0]['data']));
1934
1935                 // TODO
1936                 // merge with current record, current contents have priority
1937                 // update record, set url-updated
1938                 // update profile photos
1939                 // schedule a scan?
1940
1941         }
1942 */
1943
1944         // handle friend suggestion notification
1945
1946         $sugg = $feed->get_feed_tags( NAMESPACE_DFRN, 'suggest' );
1947         if(isset($sugg[0]['child'][NAMESPACE_DFRN])) {
1948                 $base = $sugg[0]['child'][NAMESPACE_DFRN];
1949                 $fsugg = array();
1950                 $fsugg['uid'] = $importer['importer_uid'];
1951                 $fsugg['cid'] = $importer['id'];
1952                 $fsugg['name'] = notags(unxmlify($base['name'][0]['data']));
1953                 $fsugg['photo'] = notags(unxmlify($base['photo'][0]['data']));
1954                 $fsugg['url'] = notags(unxmlify($base['url'][0]['data']));
1955                 $fsugg['request'] = notags(unxmlify($base['request'][0]['data']));
1956                 $fsugg['body'] = escape_tags(unxmlify($base['note'][0]['data']));
1957
1958                 // Does our member already have a friend matching this description?
1959
1960                 $r = q("SELECT * FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
1961                         dbesc($fsugg['name']),
1962                         dbesc(normalise_link($fsugg['url'])),
1963                         intval($fsugg['uid'])
1964                 );
1965                 if(count($r))
1966                         return 0;
1967
1968                 // Do we already have an fcontact record for this person?
1969
1970                 $fid = 0;
1971                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
1972                         dbesc($fsugg['url']),
1973                         dbesc($fsugg['name']),
1974                         dbesc($fsugg['request'])
1975                 );
1976                 if(count($r)) {
1977                         $fid = $r[0]['id'];
1978
1979                         // OK, we do. Do we already have an introduction for this person ?
1980                         $r = q("select id from intro where uid = %d and fid = %d limit 1",
1981                                 intval($fsugg['uid']),
1982                                 intval($fid)
1983                         );
1984                         if(count($r))
1985                                 return 0;
1986                 }
1987                 if(! $fid)
1988                         $r = q("INSERT INTO `fcontact` ( `name`,`url`,`photo`,`request` ) VALUES ( '%s', '%s', '%s', '%s' ) ",
1989                         dbesc($fsugg['name']),
1990                         dbesc($fsugg['url']),
1991                         dbesc($fsugg['photo']),
1992                         dbesc($fsugg['request'])
1993                 );
1994                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
1995                         dbesc($fsugg['url']),
1996                         dbesc($fsugg['name']),
1997                         dbesc($fsugg['request'])
1998                 );
1999                 if(count($r)) {
2000                         $fid = $r[0]['id'];
2001                 }
2002                 // database record did not get created. Quietly give up.
2003                 else
2004                         return 0;
2005
2006
2007                 $hash = random_string();
2008
2009                 $r = q("INSERT INTO `intro` ( `uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked` )
2010                         VALUES( %d, %d, %d, '%s', '%s', '%s', %d )",
2011                         intval($fsugg['uid']),
2012                         intval($fid),
2013                         intval($fsugg['cid']),
2014                         dbesc($fsugg['body']),
2015                         dbesc($hash),
2016                         dbesc(datetime_convert()),
2017                         intval(0)
2018                 );
2019
2020                 notification(array(
2021                         'type'         => NOTIFY_SUGGEST,
2022                         'notify_flags' => $importer['notify-flags'],
2023                         'language'     => $importer['language'],
2024                         'to_name'      => $importer['username'],
2025                         'to_email'     => $importer['email'],
2026                         'uid'          => $importer['importer_uid'],
2027                         'item'         => $fsugg,
2028                         'link'         => $a->get_baseurl() . '/notifications/intros',
2029                         'source_name'  => $importer['name'],
2030                         'source_link'  => $importer['url'],
2031                         'source_photo' => $importer['photo'],
2032                         'verb'         => ACTIVITY_REQ_FRIEND,
2033                         'otype'        => 'intro'
2034                 ));
2035
2036                 return 0;
2037         }
2038
2039         $ismail = false;
2040
2041         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
2042         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
2043
2044                 logger('local_delivery: private message received');
2045
2046                 $ismail = true;
2047                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
2048
2049                 $msg = array();
2050                 $msg['uid'] = $importer['importer_uid'];
2051                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
2052                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
2053                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
2054                 $msg['contact-id'] = $importer['id'];
2055                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
2056                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
2057                 $msg['seen'] = 0;
2058                 $msg['replied'] = 0;
2059                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
2060                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
2061                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
2062
2063                 dbesc_array($msg);
2064
2065                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
2066                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
2067
2068                 // send notifications.
2069
2070                 require_once('include/enotify.php');
2071
2072                 $notif_params = array(
2073                         'type' => NOTIFY_MAIL,
2074                         'notify_flags' => $importer['notify-flags'],
2075                         'language' => $importer['language'],
2076                         'to_name' => $importer['username'],
2077                         'to_email' => $importer['email'],
2078                         'uid' => $importer['importer_uid'],
2079                         'item' => $msg,
2080                         'source_name' => $msg['from-name'],
2081                         'source_link' => $importer['url'],
2082                         'source_photo' => $importer['thumb'],
2083                         'verb' => ACTIVITY_POST,
2084                         'otype' => 'mail'
2085                 );
2086
2087                 notification($notif_params);
2088                 return 0;
2089
2090                 // NOTREACHED
2091         }
2092
2093         $community_page = 0;
2094         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'community');
2095         if($rawtags) {
2096                 $community_page = intval($rawtags[0]['data']);
2097         }
2098         if(intval($importer['forum']) != $community_page) {
2099                 q("update contact set forum = %d where id = %d limit 1",
2100                         intval($community_page),
2101                         intval($importer['id'])
2102                 );
2103                 $importer['forum'] = (string) $community_page;
2104         }
2105
2106         logger('local_delivery: feed item count = ' . $feed->get_item_quantity());
2107
2108         // process any deleted entries
2109
2110         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
2111         if(is_array($del_entries) && count($del_entries)) {
2112                 foreach($del_entries as $dentry) {
2113                         $deleted = false;
2114                         if(isset($dentry['attribs']['']['ref'])) {
2115                                 $uri = $dentry['attribs']['']['ref'];
2116                                 $deleted = true;
2117                                 if(isset($dentry['attribs']['']['when'])) {
2118                                         $when = $dentry['attribs']['']['when'];
2119                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
2120                                 }
2121                                 else
2122                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
2123                         }
2124                         if($deleted) {
2125
2126                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` left join contact on `item`.`contact-id` = `contact`.`id`
2127                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
2128                                         dbesc($uri),
2129                                         intval($importer['importer_uid']),
2130                                         intval($importer['id'])
2131                                 );
2132
2133                                 if(count($r)) {
2134                                         $item = $r[0];
2135
2136                                         if($item['deleted'])
2137                                                 continue;
2138
2139                                         logger('local_delivery: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
2140
2141                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2142                                                 $xo = parse_xml_string($item['object'],false);
2143                                                 $xt = parse_xml_string($item['target'],false);
2144
2145                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
2146                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
2147                                                                 dbesc($xt->id),
2148                                                                 intval($importer['importer_uid'])
2149                                                         );
2150                                                         if(count($i)) {
2151
2152                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
2153
2154                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
2155                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
2156                                                                 $author_copy = (($item['origin']) ? true : false);
2157
2158                                                                 if($owner_remove && $author_copy)
2159                                                                         continue;
2160                                                                 if($author_remove || $owner_remove) {
2161                                                                         $tags = explode(',',$i[0]['tag']);
2162                                                                         $newtags = array();
2163                                                                         if(count($tags)) {
2164                                                                                 foreach($tags as $tag)
2165                                                                                         if(trim($tag) !== trim($xo->body))
2166                                                                                                 $newtags[] = trim($tag);
2167                                                                         }
2168                                                                         q("update item set tag = '%s' where id = %d limit 1",
2169                                                                                 dbesc(implode(',',$newtags)),
2170                                                                                 intval($i[0]['id'])
2171                                                                         );
2172                                                                 }
2173                                                         }
2174                                                 }
2175                                         }
2176
2177                                         if($item['uri'] == $item['parent-uri']) {
2178                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
2179                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
2180                                                         dbesc($when),
2181                                                         dbesc(datetime_convert()),
2182                                                         dbesc($item['uri']),
2183                                                         intval($importer['importer_uid'])
2184                                                 );
2185                                         }
2186                                         else {
2187                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
2188                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2189                                                         dbesc($when),
2190                                                         dbesc(datetime_convert()),
2191                                                         dbesc($uri),
2192                                                         intval($importer['importer_uid'])
2193                                                 );
2194                                                 if($item['last-child']) {
2195                                                         // ensure that last-child is set in case the comment that had it just got wiped.
2196                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2197                                                                 dbesc(datetime_convert()),
2198                                                                 dbesc($item['parent-uri']),
2199                                                                 intval($item['uid'])
2200                                                         );
2201                                                         // who is the last child now?
2202                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
2203                                                                 ORDER BY `created` DESC LIMIT 1",
2204                                                                         dbesc($item['parent-uri']),
2205                                                                         intval($importer['importer_uid'])
2206                                                         );
2207                                                         if(count($r)) {
2208                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
2209                                                                         intval($r[0]['id'])
2210                                                                 );
2211                                                         }
2212                                                 }
2213                                         }
2214                                 }
2215                         }
2216                 }
2217         }
2218
2219
2220         foreach($feed->get_items() as $item) {
2221
2222                 $is_reply = false;
2223                 $item_id = $item->get_id();
2224                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
2225                 if(isset($rawthread[0]['attribs']['']['ref'])) {
2226                         $is_reply = true;
2227                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
2228                 }
2229
2230                 if($is_reply) {
2231                         $community = false;
2232
2233                         if($importer['page-flags'] == PAGE_COMMUNITY || $importer['page-flags'] == PAGE_PRVGROUP ) {
2234                                 $sql_extra = '';
2235                                 $community = true;
2236                                 logger('local_delivery: possible community reply');
2237                         }
2238                         else
2239                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
2240
2241                         // was the top-level post for this reply written by somebody on this site?
2242                         // Specifically, the recipient?
2243
2244                         $is_a_remote_comment = false;
2245
2246                         $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`, `item`.`forum_mode`,`item`.`origin`,`item`.`wall`,
2247                                 `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
2248                                 LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
2249                                 WHERE `item`.`uri` = '%s' AND `item`.`parent-uri` = '%s'
2250                                 AND `item`.`uid` = %d
2251                                 $sql_extra
2252                                 LIMIT 1",
2253                                 dbesc($parent_uri),
2254                                 dbesc($parent_uri),
2255                                 intval($importer['importer_uid'])
2256                         );
2257                         if($r && count($r))
2258                                 $is_a_remote_comment = true;
2259
2260                         // Does this have the characteristics of a community or private group comment?
2261                         // If it's a reply to a wall post on a community/prvgroup page it's a
2262                         // valid community comment. Also forum_mode makes it valid for sure.
2263                         // If neither, it's not.
2264
2265                         if($is_a_remote_comment && $community) {
2266                                 if((! $r[0]['forum_mode']) && (! $r[0]['wall'])) {
2267                                         $is_a_remote_comment = false;
2268                                         logger('local_delivery: not a community reply');
2269                                 }
2270                         }
2271
2272                         if($is_a_remote_comment) {
2273                                 logger('local_delivery: received remote comment');
2274                                 $is_like = false;
2275                                 // remote reply to our post. Import and then notify everybody else.
2276
2277                                 $datarray = get_atom_elements($feed,$item);
2278
2279                                 $r = q("SELECT `id`, `uid`, `last-child`, `edited`, `body`  FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2280                                         dbesc($item_id),
2281                                         intval($importer['importer_uid'])
2282                                 );
2283
2284                                 // Update content if 'updated' changes
2285
2286                                 if(count($r)) {
2287                                         $iid = $r[0]['id'];
2288                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
2289
2290                                                 // do not accept (ignore) an earlier edit than one we currently have.
2291                                                 if(datetime_convert('UTC','UTC',$datarray['edited'] < $r[0]['edited']))
2292                                                         continue;
2293
2294                                                 logger('received updated comment' , LOGGER_DEBUG);
2295                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2296                                                         dbesc($datarray['title']),
2297                                                         dbesc($datarray['body']),
2298                                                         dbesc($datarray['tag']),
2299                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2300                                                         dbesc($item_id),
2301                                                         intval($importer['importer_uid'])
2302                                                 );
2303
2304                                                 proc_run('php',"include/notifier.php","comment-import",$iid);
2305
2306                                         }
2307
2308                                         continue;
2309                                 }
2310
2311
2312                                 // TODO: make this next part work against both delivery threads of a community post
2313
2314 //                              if((! link_compare($datarray['author-link'],$importer['url'])) && (! $community)) {
2315 //                                      logger('local_delivery: received relay claiming to be from ' . $importer['url'] . ' however comment author url is ' . $datarray['author-link'] );
2316                                         // they won't know what to do so don't report an error. Just quietly die.
2317 //                                      return 0;
2318 //                              }
2319
2320                                 // our user with $importer['importer_uid'] is the owner
2321
2322                                 $own = q("select name,url,thumb from contact where uid = %d and self = 1 limit 1",
2323                                         intval($importer['importer_uid'])
2324                                 );
2325
2326
2327                                 $datarray['type'] = 'remote-comment';
2328                                 $datarray['wall'] = 1;
2329                                 $datarray['parent-uri'] = $parent_uri;
2330                                 $datarray['uid'] = $importer['importer_uid'];
2331                                 $datarray['owner-name'] = $own[0]['name'];
2332                                 $datarray['owner-link'] = $own[0]['url'];
2333                                 $datarray['owner-avatar'] = $own[0]['thumb'];
2334                                 $datarray['contact-id'] = $importer['id'];
2335
2336                                 if(($datarray['verb'] === ACTIVITY_LIKE) || ($datarray['verb'] === ACTIVITY_DISLIKE)) {
2337                                         $is_like = true;
2338                                         $datarray['type'] = 'activity';
2339                                         $datarray['gravity'] = GRAVITY_LIKE;
2340                                         $datarray['last-child'] = 0;
2341                                         // only one like or dislike per person
2342                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 limit 1",
2343                                                 intval($datarray['uid']),
2344                                                 intval($datarray['contact-id']),
2345                                                 dbesc($datarray['verb'])
2346                                         );
2347                                         if($r && count($r))
2348                                                 continue;
2349                                 }
2350
2351                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2352
2353                                         $xo = parse_xml_string($datarray['object'],false);
2354                                         $xt = parse_xml_string($datarray['target'],false);
2355
2356                                         if(($xt->type == ACTIVITY_OBJ_NOTE) && ($xt->id)) {
2357
2358                                                 // fetch the parent item
2359
2360                                                 $tagp = q("select * from item where uri = '%s' and uid = %d limit 1",
2361                                                         dbesc($xt->id),
2362                                                         intval($importer['importer_uid'])
2363                                                 );
2364                                                 if(! count($tagp))
2365                                                         continue;
2366
2367                                                 // extract tag, if not duplicate, and this user allows tags, add to parent item
2368
2369                                                 if($xo->id && $xo->content) {
2370                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
2371                                                         if(! (stristr($tagp[0]['tag'],$newtag))) {
2372                                                                 $i = q("SELECT `blocktags` FROM `user` where `uid` = %d LIMIT 1",
2373                                                                         intval($importer['importer_uid'])
2374                                                                 );
2375                                                                 if(count($i) && ! intval($i[0]['blocktags'])) {
2376                                                                         q("UPDATE item SET tag = '%s', `edited` = '%s' WHERE id = %d LIMIT 1",
2377                                                                                 dbesc($tagp[0]['tag'] . (strlen($tagp[0]['tag']) ? ',' : '') . $newtag),
2378                                                                                 intval($tagp[0]['id']),
2379                                                                                 dbesc(datetime_convert())
2380                                                                         );
2381                                                                 }
2382                                                         }
2383                                                 }
2384                                         }
2385                                 }
2386
2387 //                              if($community) {
2388 //                                      $newtag = '@[url=' . $a->get_baseurl() . '/profile/' . $importer['nickname'] . ']' . $importer['username'] . '[/url]';
2389 //                                      if(! stristr($datarray['tag'],$newtag)) {
2390 //                                              if(strlen($datarray['tag']))
2391 //                                                      $datarray['tag'] .= ',';
2392 //                                              $datarray['tag'] .= $newtag;
2393 //                                      }
2394 //                              }
2395
2396
2397                                 $posted_id = item_store($datarray);
2398                                 $parent = 0;
2399
2400                                 if($posted_id) {
2401                                         $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
2402                                                 intval($posted_id),
2403                                                 intval($importer['importer_uid'])
2404                                         );
2405                                         if(count($r))
2406                                                 $parent = $r[0]['parent'];
2407
2408                                         if(! $is_like) {
2409                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
2410                                                         dbesc(datetime_convert()),
2411                                                         intval($importer['importer_uid']),
2412                                                         intval($r[0]['parent'])
2413                                                 );
2414
2415                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
2416                                                         dbesc(datetime_convert()),
2417                                                         intval($importer['importer_uid']),
2418                                                         intval($posted_id)
2419                                                 );
2420                                         }
2421
2422                                         if($posted_id && $parent) {
2423
2424                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
2425
2426                                                 if((! $is_like) && (! $importer['self'])) {
2427
2428                                                         require_once('include/enotify.php');
2429
2430                                                         notification(array(
2431                                                                 'type'         => NOTIFY_COMMENT,
2432                                                                 'notify_flags' => $importer['notify-flags'],
2433                                                                 'language'     => $importer['language'],
2434                                                                 'to_name'      => $importer['username'],
2435                                                                 'to_email'     => $importer['email'],
2436                                                                 'uid'          => $importer['importer_uid'],
2437                                                                 'item'         => $datarray,
2438                                                                 'link'             => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $posted_id,
2439                                                                 'source_name'  => stripslashes($datarray['author-name']),
2440                                                                 'source_link'  => $datarray['author-link'],
2441                                                                 'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
2442                                                                         ? $importer['thumb'] : $datarray['author-avatar']),
2443                                                                 'verb'         => ACTIVITY_POST,
2444                                                                 'otype'        => 'item',
2445                                                                 'parent'       => $parent,
2446
2447                                                         ));
2448
2449                                                 }
2450                                         }
2451
2452                                         return 0;
2453                                         // NOTREACHED
2454                                 }
2455                         }
2456                         else {
2457
2458                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
2459
2460                                 $item_id  = $item->get_id();
2461                                 $datarray = get_atom_elements($feed,$item);
2462
2463                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2464                                         dbesc($item_id),
2465                                         intval($importer['importer_uid'])
2466                                 );
2467
2468                                 // Update content if 'updated' changes
2469
2470                                 if(count($r)) {
2471                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
2472
2473                                                 // do not accept (ignore) an earlier edit than one we currently have.
2474                                                 if(datetime_convert('UTC','UTC',$datarray['edited'] < $r[0]['edited']))
2475                                                         continue;
2476
2477                                                 $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2478                                                         dbesc($datarray['title']),
2479                                                         dbesc($datarray['body']),
2480                                                         dbesc($datarray['tag']),
2481                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2482                                                         dbesc($item_id),
2483                                                         intval($importer['importer_uid'])
2484                                                 );
2485                                         }
2486
2487                                         // update last-child if it changes
2488
2489                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2490                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
2491                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2492                                                         dbesc(datetime_convert()),
2493                                                         dbesc($parent_uri),
2494                                                         intval($importer['importer_uid'])
2495                                                 );
2496                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2497                                                         intval($allow[0]['data']),
2498                                                         dbesc(datetime_convert()),
2499                                                         dbesc($item_id),
2500                                                         intval($importer['importer_uid'])
2501                                                 );
2502                                         }
2503                                         continue;
2504                                 }
2505
2506                                 $datarray['parent-uri'] = $parent_uri;
2507                                 $datarray['uid'] = $importer['importer_uid'];
2508                                 $datarray['contact-id'] = $importer['id'];
2509                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
2510                                         $datarray['type'] = 'activity';
2511                                         $datarray['gravity'] = GRAVITY_LIKE;
2512                                         // only one like or dislike per person
2513                                         $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 limit 1",
2514                                                 intval($datarray['uid']),
2515                                                 intval($datarray['contact-id']),
2516                                                 dbesc($datarray['verb'])
2517                                         );
2518                                         if($r && count($r))
2519                                                 continue;
2520
2521                                 }
2522
2523                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2524
2525                                         $xo = parse_xml_string($datarray['object'],false);
2526                                         $xt = parse_xml_string($datarray['target'],false);
2527
2528                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
2529                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
2530                                                         dbesc($xt->id),
2531                                                         intval($importer['importer_uid'])
2532                                                 );
2533                                                 if(! count($r))
2534                                                         continue;
2535
2536                                                 // extract tag, if not duplicate, add to parent item
2537                                                 if($xo->content) {
2538                                                         if(! (stristr($r[0]['tag'],trim($xo->content)))) {
2539                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d LIMIT 1",
2540                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
2541                                                                         intval($r[0]['id'])
2542                                                                 );
2543                                                         }
2544                                                 }
2545                                         }
2546                                 }
2547
2548                                 $posted_id = item_store($datarray);
2549
2550                                 // find out if our user is involved in this conversation and wants to be notified.
2551
2552                                 if(!x($datarray['type']) || $datarray['type'] != 'activity') {
2553
2554                                         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0",
2555                                                 dbesc($parent_uri),
2556                                                 intval($importer['importer_uid'])
2557                                         );
2558
2559                                         if(count($myconv)) {
2560                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
2561
2562                                                 // first make sure this isn't our own post coming back to us from a wall-to-wall event
2563                                                 if(! link_compare($datarray['author-link'],$importer_url)) {
2564
2565
2566                                                         foreach($myconv as $conv) {
2567
2568                                                                 // now if we find a match, it means we're in this conversation
2569
2570                                                                 if(! link_compare($conv['author-link'],$importer_url))
2571                                                                         continue;
2572
2573                                                                 require_once('include/enotify.php');
2574
2575                                                                 $conv_parent = $conv['parent'];
2576
2577                                                                 notification(array(
2578                                                                         'type'         => NOTIFY_COMMENT,
2579                                                                         'notify_flags' => $importer['notify-flags'],
2580                                                                         'language'     => $importer['language'],
2581                                                                         'to_name'      => $importer['username'],
2582                                                                         'to_email'     => $importer['email'],
2583                                                                         'uid'          => $importer['importer_uid'],
2584                                                                         'item'         => $datarray,
2585                                                                         'link'             => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $posted_id,
2586                                                                         'source_name'  => stripslashes($datarray['author-name']),
2587                                                                         'source_link'  => $datarray['author-link'],
2588                                                                         'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
2589                                                                                 ? $importer['thumb'] : $datarray['author-avatar']),
2590                                                                         'verb'         => ACTIVITY_POST,
2591                                                                         'otype'        => 'item',
2592                                                                         'parent'       => $conv_parent,
2593
2594                                                                 ));
2595
2596                                                                 // only send one notification
2597                                                                 break;
2598                                                         }
2599                                                 }
2600                                         }
2601                                 }
2602                                 continue;
2603                         }
2604                 }
2605
2606                 else {
2607
2608                         // Head post of a conversation. Have we seen it? If not, import it.
2609
2610
2611                         $item_id  = $item->get_id();
2612                         $datarray = get_atom_elements($feed,$item);
2613
2614                         if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
2615                                 $ev = bbtoevent($datarray['body']);
2616                                 if(x($ev,'desc') && x($ev,'start')) {
2617                                         $ev['cid'] = $importer['id'];
2618                                         $ev['uid'] = $importer['uid'];
2619                                         $ev['uri'] = $item_id;
2620                                         $ev['edited'] = $datarray['edited'];
2621                                         $ev['private'] = $datarray['private'];
2622
2623                                         $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2624                                                 dbesc($item_id),
2625                                                 intval($importer['uid'])
2626                                         );
2627                                         if(count($r))
2628                                                 $ev['id'] = $r[0]['id'];
2629                                         $xyz = event_store($ev);
2630                                         continue;
2631                                 }
2632                         }
2633
2634                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2635                                 dbesc($item_id),
2636                                 intval($importer['importer_uid'])
2637                         );
2638
2639                         // Update content if 'updated' changes
2640
2641                         if(count($r)) {
2642                                 if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
2643
2644                                         // do not accept (ignore) an earlier edit than one we currently have.
2645                                         if(datetime_convert('UTC','UTC',$datarray['edited'] < $r[0]['edited']))
2646                                                 continue;
2647
2648                                         $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2649                                                 dbesc($datarray['title']),
2650                                                 dbesc($datarray['body']),
2651                                                 dbesc($datarray['tag']),
2652                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2653                                                 dbesc($item_id),
2654                                                 intval($importer['importer_uid'])
2655                                         );
2656                                 }
2657
2658                                 // update last-child if it changes
2659
2660                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2661                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
2662                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2663                                                 intval($allow[0]['data']),
2664                                                 dbesc(datetime_convert()),
2665                                                 dbesc($item_id),
2666                                                 intval($importer['importer_uid'])
2667                                         );
2668                                 }
2669                                 continue;
2670                         }
2671
2672                         // This is my contact on another system, but it's really me.
2673                         // Turn this into a wall post.
2674
2675                         if($importer['remote_self'])
2676                                 $datarray['wall'] = 1;
2677
2678                         $datarray['parent-uri'] = $item_id;
2679                         $datarray['uid'] = $importer['importer_uid'];
2680                         $datarray['contact-id'] = $importer['id'];
2681
2682                         if(! link_compare($datarray['owner-link'],$contact['url'])) {
2683                                 // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
2684                                 // but otherwise there's a possible data mixup on the sender's system.
2685                                 // the tgroup delivery code called from item_store will correct it if it's a forum,
2686                                 // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
2687                                 logger('local_delivery: Correcting item owner.', LOGGER_DEBUG);
2688                                 $datarray['owner-name']   = $importer['senderName'];
2689                                 $datarray['owner-link']   = $importer['url'];
2690                                 $datarray['owner-avatar'] = $importer['thumb'];
2691                         }
2692
2693                         $r = item_store($datarray);
2694                         continue;
2695                 }
2696         }
2697
2698         return 0;
2699         // NOTREACHED
2700
2701 }
2702
2703
2704 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
2705         $url = notags(trim($datarray['author-link']));
2706         $name = notags(trim($datarray['author-name']));
2707         $photo = notags(trim($datarray['author-avatar']));
2708
2709         $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
2710         if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
2711                 $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
2712
2713         if(is_array($contact)) {
2714                 if(($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
2715                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
2716                         $r = q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d AND `uid` = %d LIMIT 1",
2717                                 intval(CONTACT_IS_FRIEND),
2718                                 intval($contact['id']),
2719                                 intval($importer['uid'])
2720                         );
2721                 }
2722                 // send email notification to owner?
2723         }
2724         else {
2725
2726                 // create contact record
2727
2728                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
2729                         `blocked`, `readonly`, `pending`, `writable` )
2730                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
2731                         intval($importer['uid']),
2732                         dbesc(datetime_convert()),
2733                         dbesc($url),
2734                         dbesc(normalise_link($url)),
2735                         dbesc($name),
2736                         dbesc($nick),
2737                         dbesc($photo),
2738                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
2739                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
2740                 );
2741                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
2742                                 intval($importer['uid']),
2743                                 dbesc($url)
2744                 );
2745                 if(count($r))
2746                                 $contact_record = $r[0];
2747
2748                 // create notification
2749                 $hash = random_string();
2750
2751                 if(is_array($contact_record)) {
2752                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
2753                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
2754                                 intval($importer['uid']),
2755                                 intval($contact_record['id']),
2756                                 dbesc($hash),
2757                                 dbesc(datetime_convert())
2758                         );
2759                 }
2760                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
2761                         intval($importer['uid'])
2762                 );
2763                 $a = get_app();
2764                 if(count($r)) {
2765
2766                         if(intval($r[0]['def_gid'])) {
2767                                 require_once('include/group.php');
2768                                 group_add_member($r[0]['uid'],'',$contact_record['id'],$r[0]['def_gid']);
2769                         }
2770
2771                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) && ($r[0]['page-flags'] == PAGE_NORMAL)) {
2772                                 $email_tpl = get_intltext_template('follow_notify_eml.tpl');
2773                                 $email = replace_macros($email_tpl, array(
2774                                         '$requestor' => ((strlen($name)) ? $name : t('[Name Withheld]')),
2775                                         '$url' => $url,
2776                                         '$myname' => $r[0]['username'],
2777                                         '$siteurl' => $a->get_baseurl(),
2778                                         '$sitename' => $a->config['sitename']
2779                                 ));
2780                                 $res = mail($r[0]['email'],
2781                                         (($sharing) ? t('A new person is sharing with you at ') : t("You have a new follower at ")) . $a->config['sitename'],
2782                                         $email,
2783                                         'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] . "\n"
2784                                         . 'Content-type: text/plain; charset=UTF-8' . "\n"
2785                                         . 'Content-transfer-encoding: 8bit' );
2786
2787                         }
2788                 }
2789         }
2790 }
2791
2792 function lose_follower($importer,$contact,$datarray,$item) {
2793
2794         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
2795                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
2796                         intval(CONTACT_IS_SHARING),
2797                         intval($contact['id'])
2798                 );
2799         }
2800         else {
2801                 contact_remove($contact['id']);
2802         }
2803 }
2804
2805 function lose_sharer($importer,$contact,$datarray,$item) {
2806
2807         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
2808                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
2809                         intval(CONTACT_IS_FOLLOWER),
2810                         intval($contact['id'])
2811                 );
2812         }
2813         else {
2814                 contact_remove($contact['id']);
2815         }
2816 }
2817
2818
2819 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
2820
2821         $a = get_app();
2822
2823         if(is_array($importer)) {
2824                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
2825                         intval($importer['uid'])
2826                 );
2827         }
2828
2829         // Diaspora has different message-ids in feeds than they do
2830         // through the direct Diaspora protocol. If we try and use
2831         // the feed, we'll get duplicates. So don't.
2832
2833         if((! count($r)) || $contact['network'] === NETWORK_DIASPORA)
2834                 return;
2835
2836         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
2837
2838         // Use a single verify token, even if multiple hubs
2839
2840         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
2841
2842         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
2843
2844         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
2845
2846         if(! strlen($contact['hub-verify'])) {
2847                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d LIMIT 1",
2848                         dbesc($verify_token),
2849                         intval($contact['id'])
2850                 );
2851         }
2852
2853         post_url($url,$params);
2854
2855         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
2856
2857         return;
2858
2859 }
2860
2861
2862 function atom_author($tag,$name,$uri,$h,$w,$photo) {
2863         $o = '';
2864         if(! $tag)
2865                 return $o;
2866         $name = xmlify($name);
2867         $uri = xmlify($uri);
2868         $h = intval($h);
2869         $w = intval($w);
2870         $photo = xmlify($photo);
2871
2872
2873         $o .= "<$tag>\r\n";
2874         $o .= "<name>$name</name>\r\n";
2875         $o .= "<uri>$uri</uri>\r\n";
2876         $o .= '<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
2877         $o .= '<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
2878
2879         call_hooks('atom_author', $o);
2880
2881         $o .= "</$tag>\r\n";
2882         return $o;
2883 }
2884
2885 function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
2886
2887         $a = get_app();
2888
2889         if(! $item['parent'])
2890                 return;
2891
2892         if($item['deleted'])
2893                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
2894
2895
2896         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
2897                 $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid);
2898         else
2899                 $body = $item['body'];
2900
2901
2902         $o = "\r\n\r\n<entry>\r\n";
2903
2904         if(is_array($author))
2905                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
2906         else
2907                 $o .= atom_author('author',(($item['author-name']) ? $item['author-name'] : $item['name']),(($item['author-link']) ? $item['author-link'] : $item['url']),80,80,(($item['author-avatar']) ? $item['author-avatar'] : $item['thumb']));
2908         if(strlen($item['owner-name']))
2909                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
2910
2911         if(($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']))
2912                 $o .= '<thr:in-reply-to ref="' . xmlify($item['parent-uri']) . '" type="text/html" href="' .  xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['parent']) . '" />' . "\r\n";
2913
2914         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
2915         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
2916         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
2917         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
2918         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
2919         $o .= '<content type="' . $type . '" >' . xmlify((($type === 'html') ? bbcode($body) : $body)) . '</content>' . "\r\n";
2920         $o .= '<link rel="alternate" type="text/html" href="' . xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
2921         if($comment)
2922                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
2923
2924         if($item['location']) {
2925                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
2926                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
2927         }
2928
2929         if($item['coord'])
2930                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
2931
2932         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
2933                 $o .= '<dfrn:private>1</dfrn:private>' . "\r\n";
2934
2935         if($item['extid'])
2936                 $o .= '<dfrn:extid>' . xmlify($item['extid']) . '</dfrn:extid>' . "\r\n";
2937         if($item['bookmark'])
2938                 $o .= '<dfrn:bookmark>true</dfrn:bookmark>' . "\r\n";
2939
2940         if($item['app'])
2941                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
2942
2943         if($item['guid'])
2944                 $o .= '<dfrn:diaspora_guid>' . $item['guid'] . '</dfrn:diaspora_guid>' . "\r\n";
2945
2946         if($item['signed_text']) {
2947                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
2948                 $o .= '<dfrn:diaspora_signature>' . xmlify($sign) . '</dfrn:diaspora_signature>' . "\r\n";
2949         }
2950
2951         $verb = construct_verb($item);
2952         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
2953         $actobj = construct_activity_object($item);
2954         if(strlen($actobj))
2955                 $o .= $actobj;
2956         $actarg = construct_activity_target($item);
2957         if(strlen($actarg))
2958                 $o .= $actarg;
2959
2960         $tags = item_getfeedtags($item);
2961         if(count($tags)) {
2962                 foreach($tags as $t) {
2963                         $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
2964                 }
2965         }
2966
2967         $o .= item_getfeedattach($item);
2968
2969         $mentioned = get_mentions($item);
2970         if($mentioned)
2971                 $o .= $mentioned;
2972
2973         call_hooks('atom_entry', $o);
2974
2975         $o .= '</entry>' . "\r\n";
2976
2977         return $o;
2978 }
2979
2980 function fix_private_photos($s,$uid, $item = null, $cid = 0) {
2981         $a = get_app();
2982
2983         logger('fix_private_photos', LOGGER_DEBUG);
2984         $site = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://'));
2985
2986         if(preg_match("/\[img(.*?)\](.*?)\[\/img\]/is",$s,$matches)) {
2987                 $image = $matches[2];
2988                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
2989                 if(stristr($image , $site . '/photo/')) {
2990                         $replace = false;
2991                         $i = basename($image);
2992                         $i = str_replace(array('.jpg','.png'),array('',''),$i);
2993                         $x = strpos($i,'-');
2994                         if($x) {
2995                                 $res = substr($i,$x+1);
2996                                 $i = substr($i,0,$x);
2997                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
2998                                         dbesc($i),
2999                                         intval($res),
3000                                         intval($uid)
3001                                 );
3002                                 if(count($r)) {
3003
3004                                         // Check to see if we should replace this photo link with an embedded image
3005                                         // 1. No need to do so if the photo is public
3006                                         // 2. If there's a contact-id provided, see if they're in the access list
3007                                         //    for the photo. If so, embed it.
3008                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
3009                                         //    permissions, regardless of order but first check to see if they're an exact
3010                                         //    match to save some processing overhead.
3011
3012                                         // Currently we only embed one private photo per message so as not to hit import
3013                                         // size limits at the receiving end.
3014
3015                                         // To embed multiples, we would need to parse out the embedded photos on message
3016                                         // receipt and limit size based only on the text component. Would also need to
3017                                         // ignore all photos during bbcode translation and item localisation, as these
3018                                         // will hit internal regex backtrace limits.
3019
3020                                         if(has_permissions($r[0])) {
3021                                                 if($cid) {
3022                                                         $recips = enumerate_permissions($r[0]);
3023                                                         if(in_array($cid, $recips)) {
3024                                                                 $replace = true;
3025                                                         }
3026                                                 }
3027                                                 elseif($item) {
3028                                                         if(compare_permissions($item,$r[0]))
3029                                                                 $replace = true;
3030                                                 }
3031                                         }
3032                                         if($replace) {
3033                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
3034                                                 $s = str_replace($image, 'data:' . $r[0]['type'] . ';base64,' . base64_encode($r[0]['data']), $s);
3035                                                 logger('fix_private_photos: replaced: ' . $s, LOGGER_DATA);
3036                                         }
3037                                 }
3038                         }
3039                 }
3040         }
3041         return($s);
3042 }
3043
3044
3045 function has_permissions($obj) {
3046         if(($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
3047                 return true;
3048         return false;
3049 }
3050
3051 function compare_permissions($obj1,$obj2) {
3052         // first part is easy. Check that these are exactly the same.
3053         if(($obj1['allow_cid'] == $obj2['allow_cid'])
3054                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
3055                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
3056                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
3057                 return true;
3058
3059         // This is harder. Parse all the permissions and compare the resulting set.
3060
3061         $recipients1 = enumerate_permissions($obj1);
3062         $recipients2 = enumerate_permissions($obj2);
3063         sort($recipients1);
3064         sort($recipients2);
3065         if($recipients1 == $recipients2)
3066                 return true;
3067         return false;
3068 }
3069
3070 // returns an array of contact-ids that are allowed to see this object
3071
3072 function enumerate_permissions($obj) {
3073         require_once('include/group.php');
3074         $allow_people = expand_acl($obj['allow_cid']);
3075         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
3076         $deny_people  = expand_acl($obj['deny_cid']);
3077         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
3078         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
3079         $deny         = array_unique(array_merge($deny_people,$deny_groups));
3080         $recipients   = array_diff($recipients,$deny);
3081         return $recipients;
3082 }
3083
3084 function item_getfeedtags($item) {
3085         $ret = array();
3086         $matches = false;
3087         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
3088         if($cnt) {
3089                 for($x = 0; $x < $cnt; $x ++) {
3090                         if($matches[1][$x])
3091                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
3092                 }
3093         }
3094         $matches = false;
3095         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
3096         if($cnt) {
3097                 for($x = 0; $x < $cnt; $x ++) {
3098                         if($matches[1][$x])
3099                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
3100                 }
3101         }
3102         return $ret;
3103 }
3104
3105 function item_getfeedattach($item) {
3106         $ret = '';
3107         $arr = explode(',',$item['attach']);
3108         if(count($arr)) {
3109                 foreach($arr as $r) {
3110                         $matches = false;
3111                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"\[\/attach\]|',$r,$matches);
3112                         if($cnt) {
3113                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
3114                                 if(intval($matches[2]))
3115                                         $ret .= 'length="' . intval($matches[2]) . '" ';
3116                                 if($matches[4] !== ' ')
3117                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
3118                                 $ret .= ' />' . "\r\n";
3119                         }
3120                 }
3121         }
3122         return $ret;
3123 }
3124
3125
3126
3127 function item_expire($uid,$days) {
3128
3129         if((! $uid) || ($days < 1))
3130                 return;
3131
3132         // $expire_network_only = save your own wall posts
3133         // and just expire conversations started by others
3134
3135         $expire_network_only = get_pconfig($uid,'expire','network_only');
3136         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
3137
3138         $r = q("SELECT * FROM `item`
3139                 WHERE `uid` = %d
3140                 AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY
3141                 AND `id` = `parent`
3142                 $sql_extra
3143                 AND `deleted` = 0",
3144                 intval($uid),
3145                 intval($days)
3146         );
3147
3148         if(! count($r))
3149                 return;
3150
3151         $expire_items = get_pconfig($uid, 'expire','items');
3152         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
3153
3154         $expire_notes = get_pconfig($uid, 'expire','notes');
3155         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
3156
3157         $expire_starred = get_pconfig($uid, 'expire','starred');
3158         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
3159
3160         $expire_photos = get_pconfig($uid, 'expire','photos');
3161         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
3162
3163         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
3164
3165         foreach($r as $item) {
3166
3167                 // don't expire filed items
3168
3169                 if(strpos($item['file'],'[') !== false)
3170                         continue;
3171
3172                 // Only expire posts, not photos and photo comments
3173
3174                 if($expire_photos==0 && strlen($item['resource-id']))
3175                         continue;
3176                 if($expire_starred==0 && intval($item['starred']))
3177                         continue;
3178                 if($expire_notes==0 && $item['type']=='note')
3179                         continue;
3180                 if($expire_items==0 && $item['type']!='note')
3181                         continue;
3182
3183                 drop_item($item['id'],false);
3184         }
3185
3186         proc_run('php',"include/notifier.php","expire","$uid");
3187
3188 }
3189
3190
3191 function drop_items($items) {
3192         $uid = 0;
3193
3194         if(! local_user() && ! remote_user())
3195                 return;
3196
3197         if(count($items)) {
3198                 foreach($items as $item) {
3199                         $owner = drop_item($item,false);
3200                         if($owner && ! $uid)
3201                                 $uid = $owner;
3202                 }
3203         }
3204
3205         // multiple threads may have been deleted, send an expire notification
3206
3207         if($uid)
3208                 proc_run('php',"include/notifier.php","expire","$uid");
3209 }
3210
3211
3212 function drop_item($id,$interactive = true) {
3213
3214         $a = get_app();
3215
3216         // locate item to be deleted
3217
3218         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
3219                 intval($id)
3220         );
3221
3222         if(! count($r)) {
3223                 if(! $interactive)
3224                         return 0;
3225                 notice( t('Item not found.') . EOL);
3226                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
3227         }
3228
3229         $item = $r[0];
3230
3231         $owner = $item['uid'];
3232
3233         // check if logged in user is either the author or owner of this item
3234
3235         if((local_user() == $item['uid']) || (remote_user() == $item['contact-id'])) {
3236
3237                 // delete the item
3238
3239                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d LIMIT 1",
3240                         dbesc(datetime_convert()),
3241                         dbesc(datetime_convert()),
3242                         intval($item['id'])
3243                 );
3244
3245                 // clean up categories and tags so they don't end up as orphans
3246
3247                 $matches = false;
3248                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
3249                 if($cnt) {
3250                         foreach($matches as $mtch) {
3251                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
3252                         }
3253                 }
3254
3255                 $matches = false;
3256
3257                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
3258                 if($cnt) {
3259                         foreach($matches as $mtch) {
3260                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
3261                         }
3262                 }
3263
3264                 // If item is a link to a photo resource, nuke all the associated photos
3265                 // (visitors will not have photo resources)
3266                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
3267                 // generate a resource-id and therefore aren't intimately linked to the item.
3268
3269                 if(strlen($item['resource-id'])) {
3270                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
3271                                 dbesc($item['resource-id']),
3272                                 intval($item['uid'])
3273                         );
3274                         // ignore the result
3275                 }
3276
3277                 // If item is a link to an event, nuke the event record.
3278
3279                 if(intval($item['event-id'])) {
3280                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3281                                 intval($item['event-id']),
3282                                 intval($item['uid'])
3283                         );
3284                         // ignore the result
3285                 }
3286
3287                 // clean up item_id and sign meta-data tables
3288
3289                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
3290                         intval($item['id']),
3291                         intval($item['uid'])
3292                 );
3293
3294                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
3295                         intval($item['id']),
3296                         intval($item['uid'])
3297                 );
3298
3299                 // If it's the parent of a comment thread, kill all the kids
3300
3301                 if($item['uri'] == $item['parent-uri']) {
3302                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
3303                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
3304                                 dbesc(datetime_convert()),
3305                                 dbesc(datetime_convert()),
3306                                 dbesc($item['parent-uri']),
3307                                 intval($item['uid'])
3308                         );
3309                         // ignore the result
3310                 }
3311                 else {
3312                         // ensure that last-child is set in case the comment that had it just got wiped.
3313                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
3314                                 dbesc(datetime_convert()),
3315                                 dbesc($item['parent-uri']),
3316                                 intval($item['uid'])
3317                         );
3318                         // who is the last child now?
3319                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
3320                                 dbesc($item['parent-uri']),
3321                                 intval($item['uid'])
3322                         );
3323                         if(count($r)) {
3324                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
3325                                         intval($r[0]['id'])
3326                                 );
3327                         }
3328
3329                         // Add a relayable_retraction signature for Diaspora. Note that we can't add a target_author_signature
3330                         // if the comment was deleted by a remote user. That should be ok, because if a remote user is deleting
3331                         // the comment, that means we're the home of the post, and Diaspora will only
3332                         // check the parent_author_signature of retractions that it doesn't have to relay further
3333                         //
3334                         // I don't think this function gets called for an "unlike," but I'll check anyway
3335                         $signed_text = $item['guid'] . ';' . ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
3336
3337                         if(local_user() == $item['uid']) {
3338
3339                                 $handle = $a->user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
3340                                 $authorsig = base64_encode(rsa_sign($signed_text,$a->user['prvkey'],'sha256'));
3341                         }
3342                         else {
3343                                 $r = q("SELECT `nick`, `url` FROM `contact` WHERE `id` = '%d' LIMIT 1",
3344                                         $item['contact-id']
3345                                 );
3346                                 if(count($r)) {
3347                                         // The below handle only works for NETWORK_DFRN. I think that's ok, because this function
3348                                         // only handles DFRN deletes
3349                                         $handle_baseurl_start = strpos($r['url'],'://') + 3;
3350                                         $handle_baseurl_length = strpos($r['url'],'/profile') - $handle_baseurl_start;
3351                                         $handle = $r['nick'] . '@' . substr($r['url'], $handle_baseurl_start, $handle_baseurl_length);
3352                                         $authorsig = '';
3353                                 }
3354                         }
3355
3356                         if(isset($handle))
3357                                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
3358                                         intval($item['id']),
3359                                         dbesc($signed_text),
3360                                         dbesc($authorsig),
3361                                         dbesc($handle)
3362                                 );
3363                 }
3364                 $drop_id = intval($item['id']);
3365
3366                 // send the notification upstream/downstream as the case may be
3367
3368                 if(! $interactive)
3369                         return $owner;
3370
3371                 proc_run('php',"include/notifier.php","drop","$drop_id");
3372                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
3373                 //NOTREACHED
3374         }
3375         else {
3376                 if(! $interactive)
3377                         return 0;
3378                 notice( t('Permission denied.') . EOL);
3379                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
3380                 //NOTREACHED
3381         }
3382
3383 }