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         // Diaspora uses their own hardwired link URL in @-tags
 949         // instead of the one we supply with webfinger
 950
 951         $dlink = normalise_link($a->get_baseurl() . '/u/' . $u[0]['nickname']);
 952
 953         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
 954         if($cnt) {
 955                 foreach($matches as $mtch) {
 956                         if(link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
 957                                 $deliver_to_tgroup = true;
 958                                 logger('tgroup_deliver: local group mention found: ' . $mtch[2]);
 959                         }
 960                 }
 961         }
 962
 963         if(! $deliver_to_tgroup)
 964                 return;
 965
 966         // now change this copy of the post to a forum head message and deliver to all the tgroup members
 967
 968
 969         q("update item set wall = 1, origin = 1, forum_mode = 1 where id = %d limit 1",
 970                 intval($item_id)
 971         );
 972
 973         proc_run('php','include/notifier.php','tgroup',$item_id);
 974
 975 }
 976
 977
 978
 979
 980
 981
 982 function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
 983
 984         $a = get_app();
 985
 986         if((! strlen($contact['issued-id'])) && (! $contact['duplex']) && (! ($owner['page-flags'] == PAGE_COMMUNITY)))
 987                 return 3;
 988
 989         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 990
 991         if($contact['duplex'] && $contact['dfrn-id'])
 992                 $idtosend = '0:' . $orig_id;
 993         if($contact['duplex'] && $contact['issued-id'])
 994                 $idtosend = '1:' . $orig_id;
 995
 996         $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
 997
 998         $rino_enable = get_config('system','rino_encrypt');
 999
1000         if(! $rino_enable)
1001                 $rino = 0;
1002
1003         $url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino=1' : '');
1004
1005         logger('dfrn_deliver: ' . $url);
1006
1007         $xml = fetch_url($url);
1008
1009         $curl_stat = $a->get_curl_code();
1010         if(! $curl_stat)
1011                 return(-1); // timed out
1012
1013         logger('dfrn_deliver: ' . $xml, LOGGER_DATA);
1014
1015         if(! $xml)
1016                 return 3;
1017
1018         if(strpos($xml,'<?xml') === false) {
1019                 logger('dfrn_deliver: no valid XML returned');
1020                 logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA);
1021                 return 3;
1022         }
1023
1024         $res = parse_xml_string($xml);
1025
1026         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
1027                 return (($res->status) ? $res->status : 3);
1028
1029         $postvars     = array();
1030         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
1031         $challenge    = hex2bin((string) $res->challenge);
1032         $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0);
1033         $rino_allowed = ((intval($res->rino) === 1) ? 1 : 0);
1034
1035         $final_dfrn_id = '';
1036
1037
1038         if(($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
1039                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
1040                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
1041         }
1042         else {
1043                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
1044                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
1045         }
1046
1047         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
1048
1049         if(strpos($final_dfrn_id,':') == 1)
1050                 $final_dfrn_id = substr($final_dfrn_id,2);
1051
1052         if($final_dfrn_id != $orig_id) {
1053                 logger('dfrn_deliver: wrong dfrn_id.');
1054                 // did not decode properly - cannot trust this site
1055                 return 3;
1056         }
1057
1058         $postvars['dfrn_id']      = $idtosend;
1059         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
1060         if($dissolve)
1061                 $postvars['dissolve'] = '1';
1062
1063
1064         if((($contact['rel']) && ($contact['rel'] != CONTACT_IS_SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
1065                 $postvars['data'] = $atom;
1066                 $postvars['perm'] = 'rw';
1067         }
1068         else {
1069                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
1070                 $postvars['perm'] = 'r';
1071         }
1072
1073         if($rino && $rino_allowed && (! $dissolve)) {
1074                 $key = substr(random_string(),0,16);
1075                 $data = bin2hex(aes_encrypt($postvars['data'],$key));
1076                 $postvars['data'] = $data;
1077                 logger('rino: sent key = ' . $key, LOGGER_DEBUG);
1078
1079
1080                 if($dfrn_version >= 2.1) {
1081                         if(($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
1082                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
1083                         }
1084                         else {
1085                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
1086                         }
1087                 }
1088                 else {
1089                         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
1090                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
1091                         }
1092                         else {
1093                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
1094                         }
1095                 }
1096
1097                 logger('md5 rawkey ' . md5($postvars['key']));
1098
1099                 $postvars['key'] = bin2hex($postvars['key']);
1100         }
1101
1102         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
1103
1104         $xml = post_url($contact['notify'],$postvars);
1105
1106         logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
1107
1108         $curl_stat = $a->get_curl_code();
1109         if((! $curl_stat) || (! strlen($xml)))
1110                 return(-1); // timed out
1111
1112         if(($curl_stat == 503) && (stristr($a->get_curl_headers(),'retry-after')))
1113                 return(-1);
1114
1115         if(strpos($xml,'<?xml') === false) {
1116                 logger('dfrn_deliver: phase 2: no valid XML returned');
1117                 logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA);
1118                 return 3;
1119         }
1120
1121         $res = parse_xml_string($xml);
1122
1123         return $res->status;
1124 }
1125
1126
1127 /**
1128  *
1129  * consume_feed - process atom feed and update anything/everything we might need to update
1130  *
1131  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
1132  *
1133  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
1134  *             It is this person's stuff that is going to be updated.
1135  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
1136  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
1137  *             have a contact record.
1138  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
1139  *        might not) try and subscribe to it.
1140  * $datedir sorts in reverse order
1141  * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
1142  *      imported prior to its children being seen in the stream unless we are certain
1143  *      of how the feed is arranged/ordered.
1144  * With $pass = 1, we only pull parent items out of the stream.
1145  * With $pass = 2, we only pull children (comments/likes).
1146  *
1147  * So running this twice, first with pass 1 and then with pass 2 will do the right
1148  * thing regardless of feed ordering. This won't be adequate in a fully-threaded
1149  * model where comments can have sub-threads. That would require some massive sorting
1150  * to get all the feed items into a mostly linear ordering, and might still require
1151  * recursion.
1152  */
1153
1154 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0) {
1155
1156         require_once('library/simplepie/simplepie.inc');
1157
1158         if(! strlen($xml)) {
1159                 logger('consume_feed: empty input');
1160                 return;
1161         }
1162
1163         $feed = new SimplePie();
1164         $feed->set_raw_data($xml);
1165         if($datedir)
1166                 $feed->enable_order_by_date(true);
1167         else
1168                 $feed->enable_order_by_date(false);
1169         $feed->init();
1170
1171         if($feed->error())
1172                 logger('consume_feed: Error parsing XML: ' . $feed->error());
1173
1174         $permalink = $feed->get_permalink();
1175
1176         // Check at the feed level for updated contact name and/or photo
1177
1178         $name_updated  = '';
1179         $new_name = '';
1180         $photo_timestamp = '';
1181         $photo_url = '';
1182         $birthday = '';
1183
1184         $hubs = $feed->get_links('hub');
1185
1186         if(count($hubs))
1187                 $hub = implode(',', $hubs);
1188
1189         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
1190         if(! $rawtags)
1191                 $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
1192         if($rawtags) {
1193                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
1194                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
1195                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
1196                         $new_name = $elems['name'][0]['data'];
1197                 }
1198                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
1199                         $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
1200                         $photo_url = $elems['link'][0]['attribs']['']['href'];
1201                 }
1202
1203                 if((x($rawtags[0]['child'], NAMESPACE_DFRN)) && (x($rawtags[0]['child'][NAMESPACE_DFRN],'birthday'))) {
1204                         $birthday = datetime_convert('UTC','UTC', $rawtags[0]['child'][NAMESPACE_DFRN]['birthday'][0]['data']);
1205                 }
1206         }
1207
1208         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
1209                 logger('consume_feed: Updating photo for ' . $contact['name']);
1210                 require_once("Photo.php");
1211                 $photo_failure = false;
1212                 $have_photo = false;
1213
1214                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
1215                         intval($contact['id']),
1216                         intval($contact['uid'])
1217                 );
1218                 if(count($r)) {
1219                         $resource_id = $r[0]['resource-id'];
1220                         $have_photo = true;
1221                 }
1222                 else {
1223                         $resource_id = photo_new_resource();
1224                 }
1225
1226                 $img_str = fetch_url($photo_url,true);
1227                 $img = new Photo($img_str);
1228                 if($img->is_valid()) {
1229                         if($have_photo) {
1230                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
1231                                         dbesc($resource_id),
1232                                         intval($contact['id']),
1233                                         intval($contact['uid'])
1234                                 );
1235                         }
1236
1237                         $img->scaleImageSquare(175);
1238
1239                         $hash = $resource_id;
1240                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 4);
1241
1242                         $img->scaleImage(80);
1243                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 5);
1244
1245                         $img->scaleImage(48);
1246                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 6);
1247
1248                         $a = get_app();
1249
1250                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
1251                                 WHERE `uid` = %d AND `id` = %d LIMIT 1",
1252                                 dbesc(datetime_convert()),
1253                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.jpg'),
1254                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.jpg'),
1255                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.jpg'),
1256                                 intval($contact['uid']),
1257                                 intval($contact['id'])
1258                         );
1259                 }
1260         }
1261
1262         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
1263                 q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1264                         dbesc(notags(trim($new_name))),
1265                         dbesc(datetime_convert()),
1266                         intval($contact['uid']),
1267                         intval($contact['id'])
1268                 );
1269         }
1270
1271         if(strlen($birthday)) {
1272                 if(substr($birthday,0,4) != $contact['bdyear']) {
1273                         logger('consume_feed: updating birthday: ' . $birthday);
1274
1275                         /**
1276                          *
1277                          * Add new birthday event for this person
1278                          *
1279                          * $bdtext is just a readable placeholder in case the event is shared
1280                          * with others. We will replace it during presentation to our $importer
1281                          * to contain a sparkle link and perhaps a photo.
1282                          *
1283                          */
1284
1285                         $bdtext = t('Birthday:') . ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ;
1286
1287
1288                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`desc`,`type`)
1289                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s' ) ",
1290                                 intval($contact['uid']),
1291                                 intval($contact['id']),
1292                                 dbesc(datetime_convert()),
1293                                 dbesc(datetime_convert()),
1294                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
1295                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
1296                                 dbesc($bdtext),
1297                                 dbesc('birthday')
1298                         );
1299
1300
1301                         // update bdyear
1302
1303                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1304                                 dbesc(substr($birthday,0,4)),
1305                                 intval($contact['uid']),
1306                                 intval($contact['id'])
1307                         );
1308
1309                         // This function is called twice without reloading the contact
1310                         // Make sure we only create one event. This is why &$contact
1311                         // is a reference var in this function
1312
1313                         $contact['bdyear'] = substr($birthday,0,4);
1314                 }
1315
1316         }
1317
1318
1319         // process any deleted entries
1320
1321         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
1322         if(is_array($del_entries) && count($del_entries) && $pass != 2) {
1323                 foreach($del_entries as $dentry) {
1324                         $deleted = false;
1325                         if(isset($dentry['attribs']['']['ref'])) {
1326                                 $uri = $dentry['attribs']['']['ref'];
1327                                 $deleted = true;
1328                                 if(isset($dentry['attribs']['']['when'])) {
1329                                         $when = $dentry['attribs']['']['when'];
1330                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
1331                                 }
1332                                 else
1333                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
1334                         }
1335                         if($deleted && is_array($contact)) {
1336                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` left join `contact` on `item`.`contact-id` = `contact`.`id`
1337                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d LIMIT 1",
1338                                         dbesc($uri),
1339                                         intval($importer['uid']),
1340                                         intval($contact['id'])
1341                                 );
1342                                 if(count($r)) {
1343                                         $item = $r[0];
1344
1345                                         if(! $item['deleted'])
1346                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
1347
1348                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTVITY_OBJ_TAGTERM)) {
1349                                                 $xo = parse_xml_string($item['object'],false);
1350                                                 $xt = parse_xml_string($item['target'],false);
1351                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
1352                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
1353                                                                 dbesc($xt->id),
1354                                                                 intval($importer['importer_uid'])
1355                                                         );
1356                                                         if(count($i)) {
1357
1358                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
1359
1360                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
1361                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
1362                                                                 $author_copy = (($item['origin']) ? true : false);
1363
1364                                                                 if($owner_remove && $author_copy)
1365                                                                         continue;
1366                                                                 if($author_remove || $owner_remove) {
1367                                                                         $tags = explode(',',$i[0]['tag']);
1368                                                                         $newtags = array();
1369                                                                         if(count($tags)) {
1370                                                                                 foreach($tags as $tag)
1371                                                                                         if(trim($tag) !== trim($xo->body))
1372                                                                                                 $newtags[] = trim($tag);
1373                                                                         }
1374                                                                         q("update item set tag = '%s' where id = %d limit 1",
1375                                                                                 dbesc(implode(',',$newtags)),
1376                                                                                 intval($i[0]['id'])
1377                                                                         );
1378                                                                 }
1379                                                         }
1380                                                 }
1381                                         }
1382
1383                                         if($item['uri'] == $item['parent-uri']) {
1384                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1385                                                         `body` = '', `title` = ''
1386                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
1387                                                         dbesc($when),
1388                                                         dbesc(datetime_convert()),
1389                                                         dbesc($item['uri']),
1390                                                         intval($importer['uid'])
1391                                                 );
1392                                         }
1393                                         else {
1394                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1395                                                         `body` = '', `title` = ''
1396                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1397                                                         dbesc($when),
1398                                                         dbesc(datetime_convert()),
1399                                                         dbesc($uri),
1400                                                         intval($importer['uid'])
1401                                                 );
1402                                                 if($item['last-child']) {
1403                                                         // ensure that last-child is set in case the comment that had it just got wiped.
1404                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1405                                                                 dbesc(datetime_convert()),
1406                                                                 dbesc($item['parent-uri']),
1407                                                                 intval($item['uid'])
1408                                                         );
1409                                                         // who is the last child now?
1410                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
1411                                                                 ORDER BY `created` DESC LIMIT 1",
1412                                                                         dbesc($item['parent-uri']),
1413                                                                         intval($importer['uid'])
1414                                                         );
1415                                                         if(count($r)) {
1416                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
1417                                                                         intval($r[0]['id'])
1418                                                                 );
1419                                                         }
1420                                                 }
1421                                         }
1422                                 }
1423                         }
1424                 }
1425         }
1426
1427         // Now process the feed
1428
1429         if($feed->get_item_quantity()) {
1430
1431                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
1432
1433         // in inverse date order
1434                 if ($datedir)
1435                         $items = array_reverse($feed->get_items());
1436                 else
1437                         $items = $feed->get_items();
1438
1439
1440                 foreach($items as $item) {
1441
1442                         $is_reply = false;
1443                         $item_id = $item->get_id();
1444                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
1445                         if(isset($rawthread[0]['attribs']['']['ref'])) {
1446                                 $is_reply = true;
1447                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
1448                         }
1449
1450                         if(($is_reply) && is_array($contact)) {
1451
1452                                 if($pass == 1)
1453                                         continue;
1454
1455                                 // Have we seen it? If not, import it.
1456
1457                                 $item_id  = $item->get_id();
1458                                 $datarray = get_atom_elements($feed,$item);
1459
1460                                 if(! x($datarray,'author-name'))
1461                                         $datarray['author-name'] = $contact['name'];
1462                                 if(! x($datarray,'author-link'))
1463                                         $datarray['author-link'] = $contact['url'];
1464                                 if(! x($datarray,'author-avatar'))
1465                                         $datarray['author-avatar'] = $contact['thumb'];
1466
1467
1468                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1469                                         dbesc($item_id),
1470                                         intval($importer['uid'])
1471                                 );
1472
1473                                 // Update content if 'updated' changes
1474
1475                                 if(count($r)) {
1476                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
1477                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1478                                                         dbesc($datarray['body']),
1479                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
1480                                                         dbesc($item_id),
1481                                                         intval($importer['uid'])
1482                                                 );
1483                                         }
1484
1485                                         // update last-child if it changes
1486
1487                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1488                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
1489                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1490                                                         dbesc(datetime_convert()),
1491                                                         dbesc($parent_uri),
1492                                                         intval($importer['uid'])
1493                                                 );
1494                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1495                                                         intval($allow[0]['data']),
1496                                                         dbesc(datetime_convert()),
1497                                                         dbesc($item_id),
1498                                                         intval($importer['uid'])
1499                                                 );
1500                                         }
1501                                         continue;
1502                                 }
1503
1504                                 $force_parent = false;
1505                                 if($contact['network'] === NETWORK_OSTATUS) {
1506                                         $force_parent = true;
1507                                         if(strlen($datarray['title']))
1508                                                 unset($datarray['title']);
1509                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1510                                                 dbesc(datetime_convert()),
1511                                                 dbesc($parent_uri),
1512                                                 intval($importer['uid'])
1513                                         );
1514                                         $datarray['last-child'] = 1;
1515                                 }
1516
1517                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
1518                                         // one way feed - no remote comment ability
1519                                         $datarray['last-child'] = 0;
1520                                 }
1521                                 $datarray['parent-uri'] = $parent_uri;
1522                                 $datarray['uid'] = $importer['uid'];
1523                                 $datarray['contact-id'] = $contact['id'];
1524                                 if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
1525                                         $datarray['type'] = 'activity';
1526                                         $datarray['gravity'] = GRAVITY_LIKE;
1527                                 }
1528
1529                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
1530                                         $xo = parse_xml_string($datarray['object'],false);
1531                                         $xt = parse_xml_string($datarray['target'],false);
1532
1533                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
1534                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
1535                                                         dbesc($xt->id),
1536                                                         intval($importer['importer_uid'])
1537                                                 );
1538                                                 if(! count($r))
1539                                                         continue;
1540
1541                                                 // extract tag, if not duplicate, add to parent item
1542                                                 if($xo->id && $xo->content) {
1543                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
1544                                                         if(! (stristr($r[0]['tag'],$newtag))) {
1545                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d LIMIT 1",
1546                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . $newtag),
1547                                                                         intval($r[0]['id'])
1548                                                                 );
1549                                                         }
1550                                                 }
1551                                         }
1552                                 }
1553
1554                                 $r = item_store($datarray,$force_parent);
1555                                 continue;
1556                         }
1557
1558                         else {
1559
1560                                 // Head post of a conversation. Have we seen it? If not, import it.
1561
1562                                 $item_id  = $item->get_id();
1563
1564                                 $datarray = get_atom_elements($feed,$item);
1565
1566                                 if(is_array($contact)) {
1567                                         if(! x($datarray,'author-name'))
1568                                                 $datarray['author-name'] = $contact['name'];
1569                                         if(! x($datarray,'author-link'))
1570                                                 $datarray['author-link'] = $contact['url'];
1571                                         if(! x($datarray,'author-avatar'))
1572                                                 $datarray['author-avatar'] = $contact['thumb'];
1573                                 }
1574
1575                                 // special handling for events
1576
1577                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
1578                                         $ev = bbtoevent($datarray['body']);
1579                                         if(x($ev,'desc') && x($ev,'start')) {
1580                                                 $ev['uid'] = $importer['uid'];
1581                                                 $ev['uri'] = $item_id;
1582                                                 $ev['edited'] = $datarray['edited'];
1583                                                 $ev['private'] = $datarray['private'];
1584
1585                                                 if(is_array($contact))
1586                                                         $ev['cid'] = $contact['id'];
1587                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1588                                                         dbesc($item_id),
1589                                                         intval($importer['uid'])
1590                                                 );
1591                                                 if(count($r))
1592                                                         $ev['id'] = $r[0]['id'];
1593                                                 $xyz = event_store($ev);
1594                                                 continue;
1595                                         }
1596                                 }
1597
1598                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1599                                         dbesc($item_id),
1600                                         intval($importer['uid'])
1601                                 );
1602
1603                                 // Update content if 'updated' changes
1604
1605                                 if(count($r)) {
1606                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
1607                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1608                                                         dbesc($datarray['body']),
1609                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
1610                                                         dbesc($item_id),
1611                                                         intval($importer['uid'])
1612                                                 );
1613                                         }
1614
1615                                         // update last-child if it changes
1616
1617                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1618                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
1619                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1620                                                         intval($allow[0]['data']),
1621                                                         dbesc(datetime_convert()),
1622                                                         dbesc($item_id),
1623                                                         intval($importer['uid'])
1624                                                 );
1625                                         }
1626                                         continue;
1627                                 }
1628
1629                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
1630                                         logger('consume-feed: New follower');
1631                                         new_follower($importer,$contact,$datarray,$item);
1632                                         return;
1633                                 }
1634                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
1635                                         lose_follower($importer,$contact,$datarray,$item);
1636                                         return;
1637                                 }
1638
1639                                 if(activity_match($datarray['verb'],ACTIVITY_REQ_FRIEND)) {
1640                                         logger('consume-feed: New friend request');
1641                                         new_follower($importer,$contact,$datarray,$item,true);
1642                                         return;
1643                                 }
1644                                 if(activity_match($datarray['verb'],ACTIVITY_UNFRIEND))  {
1645                                         lose_sharer($importer,$contact,$datarray,$item);
1646                                         return;
1647                                 }
1648
1649
1650                                 if(! is_array($contact))
1651                                         return;
1652
1653                                 if($contact['network'] === NETWORK_OSTATUS || stristr($permalink,'twitter.com')) {
1654                                         if(strlen($datarray['title']))
1655                                                 unset($datarray['title']);
1656                                         $datarray['last-child'] = 1;
1657                                 }
1658
1659                                 if(($contact['network'] === NETWORK_FEED) || (! strlen($contact['notify']))) {
1660                                         // one way feed - no remote comment ability
1661                                         $datarray['last-child'] = 0;
1662                                 }
1663
1664                                 // This is my contact on another system, but it's really me.
1665                                 // Turn this into a wall post.
1666
1667                                 if($contact['remote_self'])
1668                                         $datarray['wall'] = 1;
1669
1670                                 $datarray['parent-uri'] = $item_id;
1671                                 $datarray['uid'] = $importer['uid'];
1672                                 $datarray['contact-id'] = $contact['id'];
1673                                 $r = item_store($datarray);
1674                                 continue;
1675
1676                         }
1677                 }
1678         }
1679 }
1680
1681 function local_delivery($importer,$data) {
1682
1683         $a = get_app();
1684
1685         if($importer['readonly']) {
1686                 // We aren't receiving stuff from this person. But we will quietly ignore them
1687                 // rather than a blatant "go away" message.
1688                 logger('local_delivery: ignoring');
1689                 return 0;
1690                 //NOTREACHED
1691         }
1692
1693         // Consume notification feed. This may differ from consuming a public feed in several ways
1694         // - might contain email or friend suggestions
1695         // - might contain remote followup to our message
1696         //              - in which case we need to accept it and then notify other conversants
1697         // - we may need to send various email notifications
1698
1699         $feed = new SimplePie();
1700         $feed->set_raw_data($data);
1701         $feed->enable_order_by_date(false);
1702         $feed->init();
1703
1704         $reloc = $feed->get_feed_tags( NAMESPACE_DFRN, 'relocate' );
1705         if(isset($reloc[0]['child'][NAMESPACE_DFRN])) {
1706                 $base = $reloc[0]['child'][NAMESPACE_DFRN];
1707                 $newloc = array();
1708                 $newloc['uid'] = $importer['importer_uid'];
1709                 $newloc['cid'] = $importer['id'];
1710                 $newloc['name'] = notags(unxmlify($base['name'][0]['data']));
1711                 $newloc['photo'] = notags(unxmlify($base['photo'][0]['data']));
1712                 $newloc['url'] = notags(unxmlify($base['url'][0]['data']));
1713                 $newloc['request'] = notags(unxmlify($base['request'][0]['data']));
1714                 $newloc['confirm'] = notags(unxmlify($base['confirm'][0]['data']));
1715                 $newloc['notify'] = notags(unxmlify($base['notify'][0]['data']));
1716                 $newloc['poll'] = notags(unxmlify($base['poll'][0]['data']));
1717                 $newloc['site-pubkey'] = notags(unxmlify($base['site-pubkey'][0]['data']));
1718                 $newloc['pubkey'] = notags(unxmlify($base['pubkey'][0]['data']));
1719                 $newloc['prvkey'] = notags(unxmlify($base['prvkey'][0]['data']));
1720
1721                 // TODO
1722                 // merge with current record, current contents have priority
1723                 // update record, set url-updated
1724                 // update profile photos
1725                 // schedule a scan?
1726
1727         }
1728
1729         // handle friend suggestion notification
1730
1731         $sugg = $feed->get_feed_tags( NAMESPACE_DFRN, 'suggest' );
1732         if(isset($sugg[0]['child'][NAMESPACE_DFRN])) {
1733                 $base = $sugg[0]['child'][NAMESPACE_DFRN];
1734                 $fsugg = array();
1735                 $fsugg['uid'] = $importer['importer_uid'];
1736                 $fsugg['cid'] = $importer['id'];
1737                 $fsugg['name'] = notags(unxmlify($base['name'][0]['data']));
1738                 $fsugg['photo'] = notags(unxmlify($base['photo'][0]['data']));
1739                 $fsugg['url'] = notags(unxmlify($base['url'][0]['data']));
1740                 $fsugg['request'] = notags(unxmlify($base['request'][0]['data']));
1741                 $fsugg['body'] = escape_tags(unxmlify($base['note'][0]['data']));
1742
1743                 // Does our member already have a friend matching this description?
1744
1745                 $r = q("SELECT * FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
1746                         dbesc($fsugg['name']),
1747                         dbesc(normalise_link($fsugg['url'])),
1748                         intval($fsugg['uid'])
1749                 );
1750                 if(count($r))
1751                         return 0;
1752
1753                 // Do we already have an fcontact record for this person?
1754
1755                 $fid = 0;
1756                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
1757                         dbesc($fsugg['url']),
1758                         dbesc($fsugg['name']),
1759                         dbesc($fsugg['request'])
1760                 );
1761                 if(count($r)) {
1762                         $fid = $r[0]['id'];
1763                 }
1764                 if(! $fid)
1765                         $r = q("INSERT INTO `fcontact` ( `name`,`url`,`photo`,`request` ) VALUES ( '%s', '%s', '%s', '%s' ) ",
1766                         dbesc($fsugg['name']),
1767                         dbesc($fsugg['url']),
1768                         dbesc($fsugg['photo']),
1769                         dbesc($fsugg['request'])
1770                 );
1771                 $r = q("SELECT * FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
1772                         dbesc($fsugg['url']),
1773                         dbesc($fsugg['name']),
1774                         dbesc($fsugg['request'])
1775                 );
1776                 if(count($r)) {
1777                         $fid = $r[0]['id'];
1778                 }
1779                 // database record did not get created. Quietly give up.
1780                 else
1781                         return 0;
1782
1783                 $hash = random_string();
1784
1785                 $r = q("INSERT INTO `intro` ( `uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked` )
1786                         VALUES( %d, %d, %d, '%s', '%s', '%s', %d )",
1787                         intval($fsugg['uid']),
1788                         intval($fid),
1789                         intval($fsugg['cid']),
1790                         dbesc($fsugg['body']),
1791                         dbesc($hash),
1792                         dbesc(datetime_convert()),
1793                         intval(0)
1794                 );
1795
1796                 notification(array(
1797                         'type'         => NOTIFY_SUGGEST,
1798                         'notify_flags' => $importer['notify-flags'],
1799                         'language'     => $importer['language'],
1800                         'to_name'      => $importer['username'],
1801                         'to_email'     => $importer['email'],
1802                         'item'         => $fsugg,
1803                         'link'         => $a->get_baseurl() . '/notifications/intros',
1804                         'source_name'  => $importer['name'],
1805                         'source_link'  => $importer['url'],
1806                         'source_photo' => $importer['photo'],
1807                         'verb'         => ACTIVITY_REQ_FRIEND,
1808                         'otype'        => 'intro'
1809                 ));
1810
1811                 return 0;
1812         }
1813
1814         $ismail = false;
1815
1816         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
1817         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
1818
1819                 logger('local_delivery: private message received');
1820
1821                 $ismail = true;
1822                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
1823
1824                 $msg = array();
1825                 $msg['uid'] = $importer['importer_uid'];
1826                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
1827                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
1828                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
1829                 $msg['contact-id'] = $importer['id'];
1830                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
1831                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
1832                 $msg['seen'] = 0;
1833                 $msg['replied'] = 0;
1834                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
1835                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
1836                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
1837
1838                 dbesc_array($msg);
1839
1840                 $r = dbq("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
1841                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
1842
1843                 // send notifications.
1844
1845                 require_once('include/enotify.php');
1846
1847                 $notif_params = array(
1848                         'type' => NOTIFY_MAIL,
1849                         'notify_flags' => $importer['notify-flags'],
1850                         'language' => $importer['language'],
1851                         'to_name' => $importer['username'],
1852                         'to_email' => $importer['email'],
1853                         'item' => $msg,
1854                         'source_name' => $msg['from-name'],
1855                         'source_link' => $importer['url'],
1856                         'source_photo' => $importer['thumb'],
1857                         'verb' => ACTIVITY_POST,
1858                         'otype' => 'mail'
1859                 );
1860
1861                 notification($notif_params);
1862                 return 0;
1863
1864                 // NOTREACHED
1865         }
1866
1867         logger('local_delivery: feed item count = ' . $feed->get_item_quantity());
1868
1869         // process any deleted entries
1870
1871         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
1872         if(is_array($del_entries) && count($del_entries)) {
1873                 foreach($del_entries as $dentry) {
1874                         $deleted = false;
1875                         if(isset($dentry['attribs']['']['ref'])) {
1876                                 $uri = $dentry['attribs']['']['ref'];
1877                                 $deleted = true;
1878                                 if(isset($dentry['attribs']['']['when'])) {
1879                                         $when = $dentry['attribs']['']['when'];
1880                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
1881                                 }
1882                                 else
1883                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
1884                         }
1885                         if($deleted) {
1886
1887                                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` left join contact on `item`.`contact-id` = `contact`.`id`
1888                                         WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d LIMIT 1",
1889                                         dbesc($uri),
1890                                         intval($importer['importer_uid']),
1891                                         intval($importer['id'])
1892                                 );
1893
1894                                 if(count($r)) {
1895                                         $item = $r[0];
1896
1897                                         if($item['deleted'])
1898                                                 continue;
1899
1900                                         logger('local_delivery: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
1901
1902                                         if(($item['verb'] === ACTIVITY_TAG) && ($item['object-type'] === ACTVITY_OBJ_TAGTERM)) {
1903                                                 $xo = parse_xml_string($item['object'],false);
1904                                                 $xt = parse_xml_string($item['target'],false);
1905                                                 if($xt->type === ACTIVITY_OBJ_NOTE) {
1906                                                         $i = q("select * from `item` where uri = '%s' and uid = %d limit 1",
1907                                                                 dbesc($xt->id),
1908                                                                 intval($importer['importer_uid'])
1909                                                         );
1910                                                         if(count($i)) {
1911
1912                                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
1913
1914                                                                 $owner_remove = (($item['contact-id'] == $i[0]['contact-id']) ? true: false);
1915                                                                 $author_remove = (($item['origin'] && $item['self']) ? true : false);
1916                                                                 $author_copy = (($item['origin']) ? true : false);
1917
1918                                                                 if($owner_remove && $author_copy)
1919                                                                         continue;
1920                                                                 if($author_remove || $owner_remove) {
1921                                                                         $tags = explode(',',$i[0]['tag']);
1922                                                                         $newtags = array();
1923                                                                         if(count($tags)) {
1924                                                                                 foreach($tags as $tag)
1925                                                                                         if(trim($tag) !== trim($xo->body))
1926                                                                                                 $newtags[] = trim($tag);
1927                                                                         }
1928                                                                         q("update item set tag = '%s' where id = %d limit 1",
1929                                                                                 dbesc(implode(',',$newtags)),
1930                                                                                 intval($i[0]['id'])
1931                                                                         );
1932                                                                 }
1933                                                         }
1934                                                 }
1935                                         }
1936
1937                                         if($item['uri'] == $item['parent-uri']) {
1938                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
1939                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
1940                                                         dbesc($when),
1941                                                         dbesc(datetime_convert()),
1942                                                         dbesc($item['uri']),
1943                                                         intval($importer['importer_uid'])
1944                                                 );
1945                                         }
1946                                         else {
1947                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
1948                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1949                                                         dbesc($when),
1950                                                         dbesc(datetime_convert()),
1951                                                         dbesc($uri),
1952                                                         intval($importer['importer_uid'])
1953                                                 );
1954                                                 if($item['last-child']) {
1955                                                         // ensure that last-child is set in case the comment that had it just got wiped.
1956                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1957                                                                 dbesc(datetime_convert()),
1958                                                                 dbesc($item['parent-uri']),
1959                                                                 intval($item['uid'])
1960                                                         );
1961                                                         // who is the last child now?
1962                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
1963                                                                 ORDER BY `created` DESC LIMIT 1",
1964                                                                         dbesc($item['parent-uri']),
1965                                                                         intval($importer['importer_uid'])
1966                                                         );
1967                                                         if(count($r)) {
1968                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
1969                                                                         intval($r[0]['id'])
1970                                                                 );
1971                                                         }
1972                                                 }
1973                                         }
1974                                 }
1975                         }
1976                 }
1977         }
1978
1979
1980         foreach($feed->get_items() as $item) {
1981
1982                 $is_reply = false;
1983                 $item_id = $item->get_id();
1984                 $rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
1985                 if(isset($rawthread[0]['attribs']['']['ref'])) {
1986                         $is_reply = true;
1987                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
1988                 }
1989
1990                 if($is_reply) {
1991
1992                         $community = false;
1993
1994                         if($importer['page-flags'] == PAGE_COMMUNITY) {
1995                                 $sql_extra = '';
1996                                 $community = true;
1997                                 logger('local_delivery: community reply');
1998                         }
1999                         else
2000                                 $sql_extra = " and contact.self = 1 and item.wall = 1 ";
2001
2002                         // was the top-level post for this reply written by somebody on this site?
2003                         // Specifically, the recipient?
2004
2005                         $r = q("select `item`.`id`, `item`.`uri`, `item`.`tag`,
2006                                 `contact`.`name`, `contact`.`url`, `contact`.`thumb` from `item`
2007                                 LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
2008                                 WHERE `item`.`uri` = '%s' AND `item`.`parent-uri` = '%s'
2009                                 AND `item`.`uid` = %d
2010                                 $sql_extra
2011                                 LIMIT 1",
2012                                 dbesc($parent_uri),
2013                                 dbesc($parent_uri),
2014                                 intval($importer['importer_uid'])
2015                         );
2016
2017                         if($r && count($r)) {
2018
2019                                 logger('local_delivery: received remote comment');
2020                                 $is_like = false;
2021                                 // remote reply to our post. Import and then notify everybody else.
2022                                 $datarray = get_atom_elements($feed,$item);
2023
2024
2025                 // TODO: make this next part work against both delivery threads of a community post
2026
2027 //                              if((! link_compare($datarray['author-link'],$importer['url'])) && (! $community)) {
2028 //                                      logger('local_delivery: received relay claiming to be from ' . $importer['url'] . ' however comment author url is ' . $datarray['author-link'] );
2029                                         // they won't know what to do so don't report an error. Just quietly die.
2030 //                                      return 0;
2031 //                              }
2032
2033                                 $datarray['type'] = 'remote-comment';
2034                                 $datarray['wall'] = 1;
2035                                 $datarray['parent-uri'] = $parent_uri;
2036                                 $datarray['uid'] = $importer['importer_uid'];
2037                                 $datarray['owner-name'] = $r[0]['name'];
2038                                 $datarray['owner-link'] = $r[0]['url'];
2039                                 $datarray['owner-avatar'] = $r[0]['thumb'];
2040                                 $datarray['contact-id'] = $importer['id'];
2041                                 if(($datarray['verb'] === ACTIVITY_LIKE) || ($datarray['verb'] === ACTIVITY_DISLIKE)) {
2042                                         $is_like = true;
2043                                         $datarray['type'] = 'activity';
2044                                         $datarray['gravity'] = GRAVITY_LIKE;
2045                                         $datarray['last-child'] = 0;
2046                                 }
2047
2048                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2049
2050
2051                                         $xo = parse_xml_string($datarray['object'],false);
2052                                         $xt = parse_xml_string($datarray['target'],false);
2053
2054                                         if(($xt->type == ACTIVITY_OBJ_NOTE) && ($xt->id == $r[0]['uri'])) {
2055
2056                                                 // extract tag, if not duplicate, and this user allows tags, add to parent item
2057
2058                                                 if($xo->id && $xo->content) {
2059                                                         $newtag = '#[url=' . $xo->id . ']'. $xo->content . '[/url]';
2060
2061                                                         if(! (stristr($r[0]['tag'],$newtag))) {
2062                                                                 $i = q("SELECT `blocktags` FROM `user` where `uid` = %d LIMIT 1",
2063                                                                         intval($importer['importer_uid'])
2064                                                                 );
2065                                                                 if(count($i) && ! ($i[0]['blocktags'])) {
2066                                                                         q("UPDATE item SET tag = '%s' WHERE id = %d LIMIT 1",
2067                                                                                 dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . $newtag),
2068                                                                                 intval($r[0]['id'])
2069                                                                         );
2070                                                                 }
2071                                                         }
2072                                                 }
2073                                         }
2074                                 }
2075
2076 //                              if($community) {
2077 //                                      $newtag = '@[url=' . $a->get_baseurl() . '/profile/' . $importer['nickname'] . ']' . $importer['username'] . '[/url]';
2078 //                                      if(! stristr($datarray['tag'],$newtag)) {
2079 //                                              if(strlen($datarray['tag']))
2080 //                                                      $datarray['tag'] .= ',';
2081 //                                              $datarray['tag'] .= $newtag;
2082 //                                      }
2083 //                              }
2084
2085
2086                                 $posted_id = item_store($datarray);
2087                                 $parent = 0;
2088
2089                                 if($posted_id) {
2090                                         $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
2091                                                 intval($posted_id),
2092                                                 intval($importer['importer_uid'])
2093                                         );
2094                                         if(count($r))
2095                                                 $parent = $r[0]['parent'];
2096
2097                                         if(! $is_like) {
2098                                                 $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
2099                                                         dbesc(datetime_convert()),
2100                                                         intval($importer['importer_uid']),
2101                                                         intval($r[0]['parent'])
2102                                                 );
2103
2104                                                 $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
2105                                                         dbesc(datetime_convert()),
2106                                                         intval($importer['importer_uid']),
2107                                                         intval($posted_id)
2108                                                 );
2109                                         }
2110
2111                                         if($posted_id && $parent) {
2112
2113                                                 proc_run('php',"include/notifier.php","comment-import","$posted_id");
2114
2115                                                 if((! $is_like) && (! $importer['self'])) {
2116
2117                                                         require_once('include/enotify.php');
2118
2119                                                         notification(array(
2120                                                                 'type'         => NOTIFY_COMMENT,
2121                                                                 'notify_flags' => $importer['notify-flags'],
2122                                                                 'language'     => $importer['language'],
2123                                                                 'to_name'      => $importer['username'],
2124                                                                 'to_email'     => $importer['email'],
2125                                                                 'item'         => $datarray,
2126                                                                 'link'             => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $posted_id,
2127                                                                 'source_name'  => stripslashes($datarray['author-name']),
2128                                                                 'source_link'  => $datarray['author-link'],
2129                                                                 'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
2130                                                                         ? $importer['thumb'] : $datarray['author-avatar']),
2131                                                                 'verb'         => ACTIVITY_POST,
2132                                                                 'otype'        => 'item'
2133
2134                                                         ));
2135
2136                                                 }
2137                                         }
2138                                         return 0;
2139                                         // NOTREACHED
2140                                 }
2141                         }
2142                         else {
2143
2144                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
2145
2146                                 $item_id  = $item->get_id();
2147                                 $datarray = get_atom_elements($feed,$item);
2148
2149                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2150                                         dbesc($item_id),
2151                                         intval($importer['importer_uid'])
2152                                 );
2153
2154                                 // Update content if 'updated' changes
2155
2156                                 if(count($r)) {
2157                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
2158                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2159                                                         dbesc($datarray['body']),
2160                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2161                                                         dbesc($item_id),
2162                                                         intval($importer['importer_uid'])
2163                                                 );
2164                                         }
2165
2166                                         // update last-child if it changes
2167
2168                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2169                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
2170                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
2171                                                         dbesc(datetime_convert()),
2172                                                         dbesc($parent_uri),
2173                                                         intval($importer['importer_uid'])
2174                                                 );
2175                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2176                                                         intval($allow[0]['data']),
2177                                                         dbesc(datetime_convert()),
2178                                                         dbesc($item_id),
2179                                                         intval($importer['importer_uid'])
2180                                                 );
2181                                         }
2182                                         continue;
2183                                 }
2184
2185                                 $datarray['parent-uri'] = $parent_uri;
2186                                 $datarray['uid'] = $importer['importer_uid'];
2187                                 $datarray['contact-id'] = $importer['id'];
2188                                 if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
2189                                         $datarray['type'] = 'activity';
2190                                         $datarray['gravity'] = GRAVITY_LIKE;
2191                                 }
2192
2193                                 if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
2194
2195                                         $xo = parse_xml_string($datarray['object'],false);
2196                                         $xt = parse_xml_string($datarray['target'],false);
2197
2198                                         if($xt->type == ACTIVITY_OBJ_NOTE) {
2199                                                 $r = q("select * from item where `uri` = '%s' AND `uid` = %d limit 1",
2200                                                         dbesc($xt->id),
2201                                                         intval($importer['importer_uid'])
2202                                                 );
2203                                                 if(! count($r))
2204                                                         continue;
2205
2206                                                 // extract tag, if not duplicate, add to parent item
2207                                                 if($xo->content) {
2208                                                         if(! (stristr($r[0]['tag'],trim($xo->content)))) {
2209                                                                 q("UPDATE item SET tag = '%s' WHERE id = %d LIMIT 1",
2210                                                                         dbesc($r[0]['tag'] . (strlen($r[0]['tag']) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
2211                                                                         intval($r[0]['id'])
2212                                                                 );
2213                                                         }
2214                                                 }
2215                                         }
2216                                 }
2217
2218                                 $posted_id = item_store($datarray);
2219
2220                                 // find out if our user is involved in this conversation and wants to be notified.
2221
2222                                 if($datarray['type'] != 'activity') {
2223
2224                                         $myconv = q("SELECT `author-link`, `author-avatar` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 ",
2225                                                 dbesc($parent_uri),
2226                                                 intval($importer['importer_uid'])
2227                                         );
2228
2229                                         if(count($myconv)) {
2230                                                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
2231                                                 foreach($myconv as $conv) {
2232
2233                                                         if(! link_compare($conv['author-link'],$importer_url))
2234                                                                 continue;
2235
2236                                                         require_once('include/enotify.php');
2237
2238                                                         notification(array(
2239                                                                 'type'         => NOTIFY_COMMENT,
2240                                                                 'notify_flags' => $importer['notify-flags'],
2241                                                                 'language'     => $importer['language'],
2242                                                                 'to_name'      => $importer['username'],
2243                                                                 'to_email'     => $importer['email'],
2244                                                                 'item'         => $datarray,
2245                                                                 'link'             => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $posted_id,
2246                                                                 'source_name'  => stripslashes($datarray['author-name']),
2247                                                                 'source_link'  => $datarray['author-link'],
2248                                                                 'source_photo' => ((link_compare($datarray['author-link'],$importer['url']))
2249                                                                         ? $importer['thumb'] : $datarray['author-avatar']),
2250                                                                 'verb'         => ACTIVITY_POST,
2251                                                                 'otype'        => 'item'
2252
2253                                                         ));
2254
2255                                                         break;
2256                                                 }
2257                                         }
2258                                 }
2259                                 continue;
2260                         }
2261                 }
2262
2263                 else {
2264
2265                         // Head post of a conversation. Have we seen it? If not, import it.
2266
2267
2268                         $item_id  = $item->get_id();
2269                         $datarray = get_atom_elements($feed,$item);
2270
2271                         if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
2272                                 $ev = bbtoevent($datarray['body']);
2273                                 if(x($ev,'desc') && x($ev,'start')) {
2274                                         $ev['cid'] = $importer['id'];
2275                                         $ev['uid'] = $importer['uid'];
2276                                         $ev['uri'] = $item_id;
2277                                         $ev['edited'] = $datarray['edited'];
2278                                         $ev['private'] = $datarray['private'];
2279
2280                                         $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2281                                                 dbesc($item_id),
2282                                                 intval($importer['uid'])
2283                                         );
2284                                         if(count($r))
2285                                                 $ev['id'] = $r[0]['id'];
2286                                         $xyz = event_store($ev);
2287                                         continue;
2288                                 }
2289                         }
2290
2291                         $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2292                                 dbesc($item_id),
2293                                 intval($importer['importer_uid'])
2294                         );
2295
2296                         // Update content if 'updated' changes
2297
2298                         if(count($r)) {
2299                                 if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
2300                                         $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2301                                                 dbesc($datarray['body']),
2302                                                 dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
2303                                                 dbesc($item_id),
2304                                                 intval($importer['importer_uid'])
2305                                         );
2306                                 }
2307
2308                                 // update last-child if it changes
2309
2310                                 $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
2311                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
2312                                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2313                                                 intval($allow[0]['data']),
2314                                                 dbesc(datetime_convert()),
2315                                                 dbesc($item_id),
2316                                                 intval($importer['importer_uid'])
2317                                         );
2318                                 }
2319                                 continue;
2320                         }
2321
2322                         // This is my contact on another system, but it's really me.
2323                         // Turn this into a wall post.
2324
2325                         if($contact['remote_self'])
2326                                 $datarray['wall'] = 1;
2327
2328                         $datarray['parent-uri'] = $item_id;
2329                         $datarray['uid'] = $importer['importer_uid'];
2330                         $datarray['contact-id'] = $importer['id'];
2331                         $r = item_store($datarray);
2332                         continue;
2333                 }
2334         }
2335
2336         return 0;
2337         // NOTREACHED
2338
2339 }
2340
2341
2342 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
2343         $url = notags(trim($datarray['author-link']));
2344         $name = notags(trim($datarray['author-name']));
2345         $photo = notags(trim($datarray['author-avatar']));
2346
2347         $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
2348         if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
2349                 $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
2350
2351         if(is_array($contact)) {
2352                 if(($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
2353                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
2354                         $r = q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d AND `uid` = %d LIMIT 1",
2355                                 intval(CONTACT_IS_FRIEND),
2356                                 intval($contact['id']),
2357                                 intval($importer['uid'])
2358                         );
2359                 }
2360                 // send email notification to owner?
2361         }
2362         else {
2363
2364                 // create contact record
2365
2366                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
2367                         `blocked`, `readonly`, `pending`, `writable` )
2368                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
2369                         intval($importer['uid']),
2370                         dbesc(datetime_convert()),
2371                         dbesc($url),
2372                         dbesc(normalise_link($url)),
2373                         dbesc($name),
2374                         dbesc($nick),
2375                         dbesc($photo),
2376                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
2377                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
2378                 );
2379                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
2380                                 intval($importer['uid']),
2381                                 dbesc($url)
2382                 );
2383                 if(count($r))
2384                                 $contact_record = $r[0];
2385
2386                 // create notification
2387                 $hash = random_string();
2388
2389                 if(is_array($contact_record)) {
2390                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
2391                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
2392                                 intval($importer['uid']),
2393                                 intval($contact_record['id']),
2394                                 dbesc($hash),
2395                                 dbesc(datetime_convert())
2396                         );
2397                 }
2398                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
2399                         intval($importer['uid'])
2400                 );
2401                 $a = get_app();
2402                 if(count($r)) {
2403                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) && ($r[0]['page-flags'] == PAGE_NORMAL)) {
2404                                 $email_tpl = get_intltext_template('follow_notify_eml.tpl');
2405                                 $email = replace_macros($email_tpl, array(
2406                                         '$requestor' => ((strlen($name)) ? $name : t('[Name Withheld]')),
2407                                         '$url' => $url,
2408                                         '$myname' => $r[0]['username'],
2409                                         '$siteurl' => $a->get_baseurl(),
2410                                         '$sitename' => $a->config['sitename']
2411                                 ));
2412                                 $res = mail($r[0]['email'],
2413                                         (($sharing) ? t('A new person is sharing with you at ') : t("You have a new follower at ")) . $a->config['sitename'],
2414                                         $email,
2415                                         'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] . "\n"
2416                                         . 'Content-type: text/plain; charset=UTF-8' . "\n"
2417                                         . 'Content-transfer-encoding: 8bit' );
2418
2419                         }
2420                 }
2421         }
2422 }
2423
2424 function lose_follower($importer,$contact,$datarray,$item) {
2425
2426         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
2427                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
2428                         intval(CONTACT_IS_SHARING),
2429                         intval($contact['id'])
2430                 );
2431         }
2432         else {
2433                 contact_remove($contact['id']);
2434         }
2435 }
2436
2437 function lose_sharer($importer,$contact,$datarray,$item) {
2438
2439         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
2440                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
2441                         intval(CONTACT_IS_FOLLOWER),
2442                         intval($contact['id'])
2443                 );
2444         }
2445         else {
2446                 contact_remove($contact['id']);
2447         }
2448 }
2449
2450
2451 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
2452
2453         if(is_array($importer)) {
2454                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
2455                         intval($importer['uid'])
2456                 );
2457         }
2458
2459         // Diaspora has different message-ids in feeds than they do
2460         // through the direct Diaspora protocol. If we try and use
2461         // the feed, we'll get duplicates. So don't.
2462
2463         if((! count($r)) || $contact['network'] === NETWORK_DIASPORA)
2464                 return;
2465
2466         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
2467
2468         // Use a single verify token, even if multiple hubs
2469
2470         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
2471
2472         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
2473
2474         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
2475
2476         if(! strlen($contact['hub-verify'])) {
2477                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d LIMIT 1",
2478                         dbesc($verify_token),
2479                         intval($contact['id'])
2480                 );
2481         }
2482
2483         post_url($url,$params);
2484         return;
2485
2486 }
2487
2488
2489 function atom_author($tag,$name,$uri,$h,$w,$photo) {
2490         $o = '';
2491         if(! $tag)
2492                 return $o;
2493         $name = xmlify($name);
2494         $uri = xmlify($uri);
2495         $h = intval($h);
2496         $w = intval($w);
2497         $photo = xmlify($photo);
2498
2499
2500         $o .= "<$tag>\r\n";
2501         $o .= "<name>$name</name>\r\n";
2502         $o .= "<uri>$uri</uri>\r\n";
2503         $o .= '<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
2504         $o .= '<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
2505
2506         call_hooks('atom_author', $o);
2507
2508         $o .= "</$tag>\r\n";
2509         return $o;
2510 }
2511
2512 function atom_entry($item,$type,$author,$owner,$comment = false) {
2513
2514         $a = get_app();
2515
2516         if(! $item['parent'])
2517                 return;
2518
2519         if($item['deleted'])
2520                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
2521
2522
2523         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
2524                 $body = fix_private_photos($item['body'],$owner['uid']);
2525         else
2526                 $body = $item['body'];
2527
2528
2529         $o = "\r\n\r\n<entry>\r\n";
2530
2531         if(is_array($author))
2532                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
2533         else
2534                 $o .= atom_author('author',(($item['author-name']) ? $item['author-name'] : $item['name']),(($item['author-link']) ? $item['author-link'] : $item['url']),80,80,(($item['author-avatar']) ? $item['author-avatar'] : $item['thumb']));
2535         if(strlen($item['owner-name']))
2536                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
2537
2538         if(($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']))
2539                 $o .= '<thr:in-reply-to ref="' . xmlify($item['parent-uri']) . '" type="text/html" href="' .  xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['parent']) . '" />' . "\r\n";
2540
2541         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
2542         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
2543         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
2544         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
2545         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
2546         $o .= '<content type="' . $type . '" >' . xmlify((($type === 'html') ? bbcode($body) : $body)) . '</content>' . "\r\n";
2547         $o .= '<link rel="alternate" type="text/html" href="' . xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
2548         if($comment)
2549                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
2550
2551         if($item['location']) {
2552                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
2553                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
2554         }
2555
2556         if($item['coord'])
2557                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
2558
2559         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
2560                 $o .= '<dfrn:private>1</dfrn:private>' . "\r\n";
2561
2562         if($item['extid'])
2563                 $o .= '<dfrn:extid>' . xmlify($item['extid']) . '</dfrn:extid>' . "\r\n";
2564         if($item['bookmark'])
2565                 $o .= '<dfrn:bookmark>true</dfrn:bookmark>' . "\r\n";
2566
2567         if($item['app'])
2568                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
2569
2570         if($item['guid'])
2571                 $o .= '<dfrn:diaspora_guid>' . $item['guid'] . '</dfrn:diaspora_guid>' . "\r\n";
2572
2573         if($item['signed_text']) {
2574                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
2575                 $o .= '<dfrn:diaspora_signature>' . xmlify($sign) . '</dfrn:diaspora_signature>' . "\r\n";
2576         }
2577
2578         $verb = construct_verb($item);
2579         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
2580         $actobj = construct_activity_object($item);
2581         if(strlen($actobj))
2582                 $o .= $actobj;
2583         $actarg = construct_activity_target($item);
2584         if(strlen($actarg))
2585                 $o .= $actarg;
2586
2587         $tags = item_getfeedtags($item);
2588         if(count($tags)) {
2589                 foreach($tags as $t) {
2590                         $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
2591                 }
2592         }
2593
2594         $o .= item_getfeedattach($item);
2595
2596         $mentioned = get_mentions($item);
2597         if($mentioned)
2598                 $o .= $mentioned;
2599
2600         call_hooks('atom_entry', $o);
2601
2602         $o .= '</entry>' . "\r\n";
2603
2604         return $o;
2605 }
2606
2607 function fix_private_photos($s,$uid) {
2608         $a = get_app();
2609         logger('fix_private_photos');
2610
2611         if(preg_match("/\[img\](.*?)\[\/img\]/is",$s,$matches)) {
2612                 $image = $matches[1];
2613                 logger('fix_private_photos: found photo ' . $image);
2614                 if(stristr($image ,$a->get_baseurl() . '/photo/')) {
2615                         $i = basename($image);
2616                         $i = str_replace('.jpg','',$i);
2617                         $x = strpos($i,'-');
2618                         if($x) {
2619                                 $res = substr($i,$x+1);
2620                                 $i = substr($i,0,$x);
2621                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
2622                                         dbesc($i),
2623                                         intval($res),
2624                                         intval($uid)
2625                                 );
2626                                 if(count($r)) {
2627                                         logger('replacing photo');
2628                                         $s = str_replace($image, 'data:image/jpg;base64,' . base64_encode($r[0]['data']), $s);
2629                                 }
2630                         }
2631                         logger('fix_private_photos: replaced: ' . $s, LOGGER_DATA);
2632                 }
2633         }
2634         return($s);
2635 }
2636
2637
2638
2639 function item_getfeedtags($item) {
2640         $ret = array();
2641         $matches = false;
2642         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
2643         if($cnt) {
2644                 for($x = 0; $x < $cnt; $x ++) {
2645                         if($matches[1][$x])
2646                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
2647                 }
2648         }
2649         $matches = false;
2650         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
2651         if($cnt) {
2652                 for($x = 0; $x < $cnt; $x ++) {
2653                         if($matches[1][$x])
2654                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
2655                 }
2656         }
2657         return $ret;
2658 }
2659
2660 function item_getfeedattach($item) {
2661         $ret = '';
2662         $arr = explode(',',$item['attach']);
2663         if(count($arr)) {
2664                 foreach($arr as $r) {
2665                         $matches = false;
2666                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"\[\/attach\]|',$r,$matches);
2667                         if($cnt) {
2668                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
2669                                 if(intval($matches[2]))
2670                                         $ret .= 'length="' . intval($matches[2]) . '" ';
2671                                 if($matches[4] !== ' ')
2672                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
2673                                 $ret .= ' />' . "\r\n";
2674                         }
2675                 }
2676         }
2677         return $ret;
2678 }
2679
2680
2681
2682 function item_expire($uid,$days) {
2683
2684         if((! $uid) || (! $days))
2685                 return;
2686
2687         $r = q("SELECT * FROM `item`
2688                 WHERE `uid` = %d
2689                 AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY
2690                 AND `id` = `parent`
2691                 AND `deleted` = 0",
2692                 intval($uid),
2693                 intval($days)
2694         );
2695
2696         if(! count($r))
2697                 return;
2698
2699         $expire_items = get_pconfig($uid, 'expire','items');
2700         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
2701
2702         $expire_notes = get_pconfig($uid, 'expire','notes');
2703         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
2704
2705         $expire_starred = get_pconfig($uid, 'expire','starred');
2706         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
2707
2708         $expire_photos = get_pconfig($uid, 'expire','photos');
2709         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
2710
2711         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
2712
2713         foreach($r as $item) {
2714
2715                 // Only expire posts, not photos and photo comments
2716
2717                 if($expire_photos==0 && strlen($item['resource-id']))
2718                         continue;
2719                 if($expire_starred==0 && intval($item['starred']))
2720                         continue;
2721                 if($expire_notes==0 && $item['type']=='note')
2722                         continue;
2723                 if($expire_items==0 && $item['type']!='note')
2724                         continue;
2725
2726                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s' WHERE `id` = %d LIMIT 1",
2727                         dbesc(datetime_convert()),
2728                         dbesc(datetime_convert()),
2729                         intval($item['id'])
2730                 );
2731
2732                 // kill the kids
2733
2734                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2735                         dbesc(datetime_convert()),
2736                         dbesc(datetime_convert()),
2737                         dbesc($item['parent-uri']),
2738                         intval($item['uid'])
2739                 );
2740
2741         }
2742
2743         proc_run('php',"include/notifier.php","expire","$uid");
2744
2745 }
2746
2747
2748 function drop_items($items) {
2749         $uid = 0;
2750
2751         if(count($items)) {
2752                 foreach($items as $item) {
2753                         $owner = drop_item($item,false);
2754                         if($owner && ! $uid)
2755                                 $uid = $owner;
2756                 }
2757         }
2758
2759         // multiple threads may have been deleted, send an expire notification
2760
2761         if($uid)
2762                 proc_run('php',"include/notifier.php","expire","$uid");
2763 }
2764
2765
2766 function drop_item($id,$interactive = true) {
2767
2768         $a = get_app();
2769
2770         // locate item to be deleted
2771
2772         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
2773                 intval($id)
2774         );
2775
2776         if(! count($r)) {
2777                 if(! $interactive)
2778                         return 0;
2779                 notice( t('Item not found.') . EOL);
2780                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
2781         }
2782
2783         $item = $r[0];
2784
2785         $owner = $item['uid'];
2786
2787         // check if logged in user is either the author or owner of this item
2788
2789         if((local_user() == $item['uid']) || (remote_user() == $item['contact-id'])) {
2790
2791                 // delete the item
2792
2793                 $r = q("UPDATE `item` SET `deleted` = 1, `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d LIMIT 1",
2794                         dbesc(datetime_convert()),
2795                         dbesc(datetime_convert()),
2796                         intval($item['id'])
2797                 );
2798
2799                 // If item is a link to a photo resource, nuke all the associated photos
2800                 // (visitors will not have photo resources)
2801                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
2802                 // generate a resource-id and therefore aren't intimately linked to the item.
2803
2804                 if(strlen($item['resource-id'])) {
2805                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
2806                                 dbesc($item['resource-id']),
2807                                 intval($item['uid'])
2808                         );
2809                         // ignore the result
2810                 }
2811
2812                 // If item is a link to an event, nuke the event record.
2813
2814                 if(intval($item['event-id'])) {
2815                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d LIMIT 1",
2816                                 intval($item['event-id']),
2817                                 intval($item['uid'])
2818                         );
2819                         // ignore the result
2820                 }
2821
2822
2823                 // If it's the parent of a comment thread, kill all the kids
2824
2825                 if($item['uri'] == $item['parent-uri']) {
2826                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = ''
2827                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
2828                                 dbesc(datetime_convert()),
2829                                 dbesc(datetime_convert()),
2830                                 dbesc($item['parent-uri']),
2831                                 intval($item['uid'])
2832                         );
2833                         // ignore the result
2834                 }
2835                 else {
2836                         // ensure that last-child is set in case the comment that had it just got wiped.
2837                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2838                                 dbesc(datetime_convert()),
2839                                 dbesc($item['parent-uri']),
2840                                 intval($item['uid'])
2841                         );
2842                         // who is the last child now?
2843                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
2844                                 dbesc($item['parent-uri']),
2845                                 intval($item['uid'])
2846                         );
2847                         if(count($r)) {
2848                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
2849                                         intval($r[0]['id'])
2850                                 );
2851                         }
2852                 }
2853                 $drop_id = intval($item['id']);
2854
2855                 // send the notification upstream/downstream as the case may be
2856
2857                 if(! $interactive)
2858                         return $owner;
2859
2860                 proc_run('php',"include/notifier.php","drop","$drop_id");
2861                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
2862                 //NOTREACHED
2863         }
2864         else {
2865                 if(! $interactive)
2866                         return 0;
2867                 notice( t('Permission denied.') . EOL);
2868                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
2869                 //NOTREACHED
2870         }
2871
2872 }