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