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