include/items.php

   1 <?php
   2
   3 require_once('bbcode.php');
   4
   5 function get_feed_for(&$a, $dfrn_id, $owner_id, $last_update, $direction = 0) {
   6
   7
   8         // default permissions - anonymous user
   9
  10         $sql_extra = "
  11                 AND `allow_cid` = ''
  12                 AND `allow_gid` = ''
  13                 AND `deny_cid`  = ''
  14                 AND `deny_gid`  = ''
  15         ";
  16
  17         if(strlen($owner_id) && ! intval($owner_id)) {
  18                 $r = q("SELECT `uid`, `nickname` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
  19                         dbesc($owner_id)
  20                 );
  21                 if(count($r)) {
  22                         $owner_id = $r[0]['uid'];
  23                         $owner_nick = $r[0]['nickname'];
  24                 }
  25         }
  26
  27         $r = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
  28                 intval($owner_id)
  29         );
  30         if(count($r)) {
  31                 $owner = $r[0];
  32                 $owner['nickname'] = $owner_nick;
  33         }
  34         else
  35                 killme();
  36
  37         if($dfrn_id && $dfrn_id != '*') {
  38
  39                 $sql_extra = '';
  40                 switch($direction) {
  41                         case (-1):
  42                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  43                                 $my_id = $dfrn_id;
  44                                 break;
  45                         case 0:
  46                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  47                                 $my_id = '1:' . $dfrn_id;
  48                                 break;
  49                         case 1:
  50                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  51                                 $my_id = '0:' . $dfrn_id;
  52                                 break;
  53                         default:
  54                                 return false;
  55                                 break; // NOTREACHED
  56                 }
  57
  58                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
  59                         intval($owner_id)
  60                 );
  61
  62                 if(! count($r))
  63                         return false;
  64
  65                 $contact = $r[0];
  66                 $groups = init_groups_visitor($contact['id']);
  67
  68                 if(count($groups)) {
  69                         for($x = 0; $x < count($groups); $x ++)
  70                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
  71                         $gs = implode('|', $groups);
  72                 }
  73                 else
  74                         $gs = '<<>>' ; // Impossible to match
  75
  76                 $sql_extra = sprintf("
  77                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
  78                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
  79                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
  80                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
  81                 ",
  82                         intval($contact['id']),
  83                         intval($contact['id']),
  84                         dbesc($gs),
  85                         dbesc($gs)
  86                 );
  87         }
  88
  89         if($dfrn_id === '' || $dfrn_id === '*')
  90                 $sort = 'DESC';
  91         else
  92                 $sort = 'ASC';
  93
  94         if(! strlen($last_update))
  95                 $last_update = 'now -30 days';
  96
  97         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
  98
  99         $r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
 100                 `contact`.`name`, `contact`.`photo`, `contact`.`url`,
 101                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
 102                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
 103                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`
 104                 FROM `item` LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 105                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1
 106                 AND `item`.`wall` = 1 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 107                 AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 108                 $sql_extra
 109                 ORDER BY `parent` %s, `created` ASC LIMIT 0, 300",
 110                 intval($owner_id),
 111                 dbesc($check_date),
 112                 dbesc($check_date),
 113                 dbesc($sort)
 114         );
 115
 116         // Will check further below if this actually returned results.
 117         // We will provide an empty feed in any case.
 118
 119         $items = $r;
 120
 121         $feed_template = load_view_file('view/atom_feed.tpl');
 122
 123         $atom = '';
 124
 125         $hub = get_config('system','huburl');
 126
 127         $hubxml = '';
 128         if(strlen($hub)) {
 129                 $hubs = explode(',', $hub);
 130                 if(count($hubs)) {
 131                         foreach($hubs as $h) {
 132                                 $h = trim($h);
 133                                 if(! strlen($h))
 134                                         continue;
 135                                 $hubxml .= '<link rel="hub" href="' . xmlify($h) . '" />' . "\n" ;
 136                         }
 137                 }
 138         }
 139
 140         $salmon = '<link rel="salmon" href="' . xmlify($a->get_baseurl() . '/salmon/' . $owner_nick) . '" />' . "\n" ;
 141         $salmon .= '<link rel="http://salmon-protocol.org/ns/salmon-replies" href="' . xmlify($a->get_baseurl() . '/salmon/' . $owner_nick) . '" />' . "\n" ;
 142         $salmon .= '<link rel="http://salmon-protocol.org/ns/salmon-mention" href="' . xmlify($a->get_baseurl() . '/salmon/' . $owner_nick) . '" />' . "\n" ;
 143
 144
 145         $atom .= replace_macros($feed_template, array(
 146                 '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 147                 '$feed_title'   => xmlify($owner['name']),
 148                 '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
 149                 '$hub'          => $hubxml,
 150                 '$salmon'       => $salmon,
 151                 '$name'         => xmlify($owner['name']),
 152                 '$profile_page' => xmlify($owner['url']),
 153                 '$photo'        => xmlify($owner['photo']),
 154                 '$thumb'        => xmlify($owner['thumb']),
 155                 '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 156                 '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 157                 '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME))
 158         ));
 159
 160
 161         call_hooks('atom_feed', $atom);
 162
 163         if(! count($items)) {
 164
 165                 call_hooks('atom_feed_end', $atom);
 166
 167                 $atom .= '</feed>' . "\r\n";
 168                 return $atom;
 169         }
 170
 171         foreach($items as $item) {
 172
 173                 // public feeds get html, our own nodes use bbcode
 174
 175                 if($dfrn_id === '*') {
 176                         $type = 'html';
 177                 }
 178                 else {
 179                         $type = 'text';
 180                 }
 181
 182                 $atom .= atom_entry($item,$type,null,$owner,true);
 183         }
 184
 185         call_hooks('atom_feed_end', $atom);
 186
 187         $atom .= '</feed>' . "\r\n";
 188         return $atom;
 189 }
 190
 191
 192 function construct_verb($item) {
 193         if($item['verb'])
 194                 return $item['verb'];
 195         return ACTIVITY_POST;
 196 }
 197
 198 function construct_activity_object($item) {
 199
 200         if($item['object']) {
 201                 $o = '<as:object>' . "\r\n";
 202                 $r = @simplexml_load_string($item['object']);
 203                 if($r->type)
 204                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 205                 if($r->id)
 206                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 207                 if($r->title)
 208                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 209                 if($r->link) {
 210                         if(substr($r->link,0,1) === '<')
 211                                 $o .= $r->link;
 212                         else
 213                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 214                 }
 215                 if($r->content)
 216                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 217                 $o .= '</as:object>' . "\r\n";
 218                 return $o;
 219         }
 220
 221         return '';
 222 }
 223
 224 function construct_activity_target($item) {
 225
 226         if($item['target']) {
 227                 $o = '<as:target>' . "\r\n";
 228                 $r = @simplexml_load_string($item['target']);
 229                 if($r->type)
 230                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 231                 if($r->id)
 232                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 233                 if($r->title)
 234                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 235                 if($r->link) {
 236                         if(substr($r->link,0,1) === '<')
 237                                 $o .= $r->link;
 238                         else
 239                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 240                 }
 241                 if($r->content)
 242                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 243                 $o .= '</as:target>' . "\r\n";
 244                 return $o;
 245         }
 246
 247         return '';
 248 }
 249
 250
 251
 252
 253 function get_atom_elements($feed,$item) {
 254
 255         require_once('library/HTMLPurifier.auto.php');
 256         require_once('include/html2bbcode.php');
 257
 258         $best_photo = array();
 259
 260         $res = array();
 261
 262         $author = $item->get_author();
 263         $res['author-name'] = unxmlify($author->get_name());
 264         $res['author-link'] = unxmlify($author->get_link());
 265         $res['uri'] = unxmlify($item->get_id());
 266         $res['title'] = unxmlify($item->get_title());
 267         $res['body'] = unxmlify($item->get_content());
 268
 269
 270         // look for a photo. We should check media size and find the best one,
 271         // but for now let's just find any author photo
 272
 273         $rawauthor = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 274
 275         if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 276                 $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 277                 foreach($base as $link) {
 278                         if(! $res['author-avatar']) {
 279                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 280                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 281                         }
 282                 }
 283         }
 284
 285         $rawactor = $item->get_item_tags(NAMESPACE_ACTIVITY, 'actor');
 286
 287         if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 288                 $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 289                 if($base && count($base)) {
 290                         foreach($base as $link) {
 291                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 292                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 293                                 if(! $res['author-avatar']) {
 294                                         if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 295                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 296                                 }
 297                         }
 298                 }
 299         }
 300
 301         // No photo/profile-link on the item - look at the feed level
 302
 303         if((! (x($res,'author-link'))) || (! (x($res,'author-avatar')))) {
 304                 $rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 305                 if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 306                         $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 307                         foreach($base as $link) {
 308                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 309                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 310                                 if(! $res['author-avatar']) {
 311                                         if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 312                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 313                                 }
 314                         }
 315                 }
 316
 317                 $rawactor = $feed->get_feed_tags(NAMESPACE_ACTIVITY, 'subject');
 318
 319                 if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 320                         $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 321
 322                         if($base && count($base)) {
 323                                 foreach($base as $link) {
 324                                         if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 325                                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 326                                         if(! (x($res,'author-avatar'))) {
 327                                                 if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 328                                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 329                                         }
 330                                 }
 331                         }
 332                 }
 333         }
 334
 335
 336         $maxlen = get_max_import_size();
 337         if($maxlen && (strlen($res['body']) > $maxlen))
 338                 $res['body'] = substr($res['body'],0, $maxlen);
 339
 340         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 341         // the content type. Our own network only emits text normally, though it might have been converted to
 342         // html if we used a pubsubhubbub transport. But if we see even one html open tag in our text, we will
 343         // have to assume it is all html and needs to be purified.
 344
 345         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 346         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 347         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 348         // html.
 349
 350
 351         if(strpos($res['body'],'<')) {
 352
 353                 $res['body'] = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 354                         '[youtube]$1[/youtube]', $res['body']);
 355
 356                 $config = HTMLPurifier_Config::createDefault();
 357                 $config->set('Cache.DefinitionImpl', null);
 358
 359                 // we shouldn't need a whitelist, because the bbcode converter
 360                 // will strip out any unsupported tags.
 361                 // $config->set('HTML.Allowed', 'p,b,a[href],i');
 362
 363                 $purifier = new HTMLPurifier($config);
 364                 $res['body'] = $purifier->purify($res['body']);
 365         }
 366
 367
 368         $res['body'] = html2bbcode($res['body']);
 369
 370
 371         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 372         if($allow && $allow[0]['data'] == 1)
 373                 $res['last-child'] = 1;
 374         else
 375                 $res['last-child'] = 0;
 376
 377         $private = $item->get_item_tags(NAMESPACE_DFRN,'private');
 378         if($private && $private[0]['data'] == 1)
 379                 $res['private'] = 1;
 380         else
 381                 $res['private'] = 0;
 382
 383         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 384         if($rawcreated)
 385                 $res['created'] = unxmlify($rawcreated[0]['data']);
 386
 387         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 388         if($rawlocation)
 389                 $res['location'] = unxmlify($rawlocation[0]['data']);
 390
 391
 392         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 393         if($rawedited)
 394                 $res['edited'] = unxmlify($rawcreated[0]['data']);
 395
 396         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 397         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 398                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 399         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 400                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 401         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 402                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 403         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 404                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 405
 406         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 407                 $base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 408
 409                 foreach($base as $link) {
 410                         if(! $res['owner-avatar']) {
 411                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 412                                         $res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
 413                         }
 414                 }
 415         }
 416
 417         $rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
 418         if($rawgeo)
 419                 $res['coord'] = unxmlify($rawgeo[0]['data']);
 420
 421
 422         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 423         // select between supported verbs
 424         if($rawverb)
 425                 $res['verb'] = unxmlify($rawverb[0]['data']);
 426
 427         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 428
 429         if($rawobj) {
 430                 $res['object'] = '<object>' . "\n";
 431                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 432                         $res['object-type'] = $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 433                         $res['object'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 434                 }
 435                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 436                         $res['object'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 437                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 438                         $res['object'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 439                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 440                         $res['object'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 441                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 442                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 443                         if(! $body)
 444                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 445                         if(strpos($body,'<')) {
 446
 447                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 448                                         '[youtube]$1[/youtube]', $body);
 449
 450                                 $config = HTMLPurifier_Config::createDefault();
 451                                 $config->set('Cache.DefinitionImpl', null);
 452
 453                                 $purifier = new HTMLPurifier($config);
 454                                 $body = $purifier->purify($body);
 455                         }
 456
 457                         $body = html2bbcode($body);
 458                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 459                 }
 460
 461                 $res['object'] .= '</object>' . "\n";
 462         }
 463
 464         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'target');
 465
 466         if($rawobj) {
 467                 $res['target'] = '<target>' . "\n";
 468                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 469                         $res['target'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 470                 }
 471                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 472                         $res['target'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 473
 474                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 475                         $res['target'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 476                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 477                         $res['target'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 478                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 479                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 480                         if(! $body)
 481                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 482                         if(strpos($body,'<')) {
 483
 484                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 485                                         '[youtube]$1[/youtube]', $body);
 486
 487                                 $config = HTMLPurifier_Config::createDefault();
 488                                 $config->set('Cache.DefinitionImpl', null);
 489
 490                                 $purifier = new HTMLPurifier($config);
 491                                 $body = $purifier->purify($body);
 492                         }
 493
 494                         $body = html2bbcode($body);
 495                         $res['target'] .= '<content>' . $body . '</content>' . "\n";
 496                 }
 497
 498                 $res['target'] .= '</target>' . "\n";
 499         }
 500
 501         call_hooks('parse_atom', array('feed' => $feed, 'item' => $item, 'result' => $res));
 502
 503         return $res;
 504 }
 505
 506 function encode_rel_links($links) {
 507         $o = '';
 508         if(! ((is_array($links)) && (count($links))))
 509                 return $o;
 510         foreach($links as $link) {
 511                 $o .= '<link ';
 512                 if($link['attribs']['']['rel'])
 513                         $o .= 'rel="' . $link['attribs']['']['rel'] . '" ';
 514                 if($link['attribs']['']['type'])
 515                         $o .= 'type="' . $link['attribs']['']['type'] . '" ';
 516                 if($link['attribs']['']['href'])
 517                         $o .= 'type="' . $link['attribs']['']['href'] . '" ';
 518                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['width'])
 519                         $o .= 'media:width="' . $link['attribs'][NAMESPACE_MEDIA]['width'] . '" ';
 520                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['height'])
 521                         $o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
 522                 $o .= ' />' . "\n" ;
 523         }
 524         return xmlify($o);
 525 }
 526
 527 function item_store($arr) {
 528
 529         if($arr['gravity'])
 530                 $arr['gravity'] = intval($arr['gravity']);
 531         elseif($arr['parent-uri'] == $arr['uri'])
 532                 $arr['gravity'] = 0;
 533         elseif(activity_match($arr['verb'],ACTIVITY_POST))
 534                 $arr['gravity'] = 6;
 535         else
 536                 $arr['gravity'] = 6;   // extensible catchall
 537
 538         if(! x($arr,'type'))
 539                 $arr['type']      = 'remote';
 540         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
 541         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : random_string());
 542         $arr['author-name']   = ((x($arr,'author-name'))   ? notags(trim($arr['author-name']))   : '');
 543         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
 544         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
 545         $arr['owner-name']    = ((x($arr,'owner-name'))    ? notags(trim($arr['owner-name']))    : '');
 546         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
 547         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
 548         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
 549         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
 550         $arr['changed']       = datetime_convert();
 551         $arr['title']         = ((x($arr,'title'))         ? notags(trim($arr['title']))         : '');
 552         $arr['location']      = ((x($arr,'location'))      ? notags(trim($arr['location']))      : '');
 553         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
 554         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
 555         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
 556         $arr['deleted']       = 0;
 557         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : '');
 558         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
 559         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
 560         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
 561         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
 562         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
 563         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
 564         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
 565         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
 566         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
 567         $arr['private']       = ((x($arr,'private'))       ? intval($arr['private'])             : 0 );
 568         $arr['body']          = ((x($arr,'body'))          ? escape_tags(trim($arr['body']))     : '');
 569
 570         // The content body has been through a lot of filtering and transport escaping by now.
 571         // We don't want to skip any filters, however a side effect of all this filtering
 572         // is that ampersands and <> may have been double encoded, depending on which filter chain
 573         // they came through.
 574
 575         $arr['body']          = str_replace(
 576                                                                 array('&amp;amp;','&amp;gt;','&amp;lt;'),
 577                                                                 array('&amp;'    ,'&gt;'    ,'&lt;'),
 578                                                                 $arr['body']
 579                                                         );
 580
 581
 582
 583         if($arr['parent-uri'] === $arr['uri']) {
 584                 $parent_id = 0;
 585                 $allow_cid = $arr['allow_cid'];
 586                 $allow_gid = $arr['allow_gid'];
 587                 $deny_cid  = $arr['deny_cid'];
 588                 $deny_gid  = $arr['deny_gid'];
 589         }
 590         else {
 591
 592                 // find the parent and snarf the item id and ACL's
 593
 594                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 595                         dbesc($arr['parent-uri']),
 596                         intval($arr['uid'])
 597                 );
 598
 599                 if(count($r)) {
 600
 601                         // is the new message multi-level threaded?
 602                         // even though we don't support it now, preserve the info
 603                         // and re-attach to the conversation parent.
 604
 605                         if($r[0]['uri'] != $r[0]['parent-uri']) {
 606                                 $arr['thr-parent'] = $arr['parent-uri'];
 607                                 $arr['parent-uri'] = $r[0]['parent-uri'];
 608                         }
 609
 610                         $parent_id = $r[0]['id'];
 611                         $allow_cid = $r[0]['allow_cid'];
 612                         $allow_gid = $r[0]['allow_gid'];
 613                         $deny_cid  = $r[0]['deny_cid'];
 614                         $deny_gid  = $r[0]['deny_gid'];
 615                 }
 616                 else {
 617                         logger('item_store: item parent was not found - ignoring item');
 618                         return 0;
 619                 }
 620         }
 621
 622         call_hooks('post_remote',$arr);
 623
 624         dbesc_array($arr);
 625
 626         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
 627
 628         $r = dbq("INSERT INTO `item` (`"
 629                         . implode("`, `", array_keys($arr))
 630                         . "`) VALUES ('"
 631                         . implode("', '", array_values($arr))
 632                         . "')" );
 633
 634         // find the item we just created
 635
 636         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 637                 $arr['uri'],           // already dbesc'd
 638                 intval($arr['uid'])
 639         );
 640         if(count($r)) {
 641                 $current_post = $r[0]['id'];
 642                 logger('item_store: created item ' . $current_post);
 643         }
 644         else {
 645                 logger('item_store: could not locate created item');
 646                 return 0;
 647         }
 648
 649         if($arr['parent-uri'] === $arr['uri'])
 650                 $parent_id = $current_post;
 651
 652         if(strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid))
 653                 $private = 1;
 654         else
 655                 $private = $arr['private'];
 656
 657         // Set parent id - and also make sure to inherit the parent's ACL's.
 658
 659         $r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
 660                 `deny_cid` = '%s', `deny_gid` = '%s', `private` = %d WHERE `id` = %d LIMIT 1",
 661                 intval($parent_id),
 662                 dbesc($allow_cid),
 663                 dbesc($allow_gid),
 664                 dbesc($deny_cid),
 665                 dbesc($deny_gid),
 666                 intval($private),
 667                 intval($current_post)
 668         );
 669
 670         return $current_post;
 671 }
 672
 673 function get_item_contact($item,$contacts) {
 674         if(! count($contacts) || (! is_array($item)))
 675                 return false;
 676         foreach($contacts as $contact) {
 677                 if($contact['id'] == $item['contact-id']) {
 678                         return $contact;
 679                         break; // NOTREACHED
 680                 }
 681         }
 682         return false;
 683 }
 684
 685
 686 function dfrn_deliver($owner,$contact,$atom) {
 687
 688         $a = get_app();
 689
 690         if((! strlen($contact['dfrn-id'])) && (! $contact['duplex']) && (! ($owner['page-flags'] == PAGE_COMMUNITY)))
 691                 return 3;
 692
 693         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 694
 695         if($contact['duplex'] && $contact['dfrn-id'])
 696                 $idtosend = '0:' . $orig_id;
 697         if($contact['duplex'] && $contact['issued-id'])
 698                 $idtosend = '1:' . $orig_id;
 699
 700         $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
 701
 702         $rino_enable = get_config('system','rino_encrypt');
 703
 704         if(! $rino_enable)
 705                 $rino = 0;
 706
 707         $url = $contact['notify'] . '?dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino=1' : '');
 708
 709         logger('dfrn_deliver: ' . $url);
 710
 711         $xml = fetch_url($url);
 712
 713         $curl_stat = $a->get_curl_code();
 714         if(! $curl_stat)
 715                 return(-1); // timed out
 716
 717         logger('dfrn_deliver: ' . $xml);
 718
 719         if(! $xml)
 720                 return 3;
 721
 722         $res = simplexml_load_string($xml);
 723
 724         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 725                 return (($res->status) ? $res->status : 3);
 726
 727         $postvars     = array();
 728         $sent_dfrn_id = hex2bin($res->dfrn_id);
 729         $challenge    = hex2bin($res->challenge);
 730         $rino_allowed = ((intval($res->rino) === 1) ? 1 : 0);
 731
 732         $final_dfrn_id = '';
 733
 734
 735         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 736                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 737                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 738         }
 739         else {
 740                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 741                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 742         }
 743
 744         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 745
 746         if(strpos($final_dfrn_id,':') == 1)
 747                 $final_dfrn_id = substr($final_dfrn_id,2);
 748
 749         if($final_dfrn_id != $orig_id) {
 750                 logger('dfrn_deliver: wrong dfrn_id.');
 751                 // did not decode properly - cannot trust this site
 752                 return 3;
 753         }
 754
 755         $postvars['dfrn_id']      = $idtosend;
 756         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 757
 758         if(($contact['rel']) && ($contact['rel'] != REL_FAN) && (! $contact['blocked']) && (! $contact['readonly'])) {
 759                 $postvars['data'] = $atom;
 760         }
 761         elseif($owner['page-flags'] == PAGE_COMMUNITY) {
 762                 $postvars['data'] = $atom;
 763         }
 764         else {
 765                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
 766         }
 767
 768         if($rino && $rino_allowed) {
 769                 $key = substr(random_string(),0,16);
 770                 $data = bin2hex(aes_encrypt($postvars['data'],$key));
 771                 $postvars['data'] = $data;
 772                 logger('rino: sent key = ' . $key);
 773
 774                 if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 775                         openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
 776                 }
 777                 else {
 778                         openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
 779                 }
 780
 781                 logger('md5 rawkey ' . md5($postvars['key']));
 782
 783                 $postvars['key'] = bin2hex($postvars['key']);
 784         }
 785
 786         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
 787
 788         $xml = post_url($contact['notify'],$postvars);
 789
 790         logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
 791
 792         $curl_stat = $a->get_curl_code();
 793         if((! $curl_stat) || (! strlen($xml)))
 794                 return(-1); // timed out
 795
 796         $res = simplexml_load_string($xml);
 797
 798         return $res->status;
 799
 800 }
 801
 802
 803 /*
 804  *
 805  * consume_feed - process atom feed and update anything/everything we might need to update
 806  *
 807  * $xml = the (atom) feed to consume - no RSS spoken here, it might partially work since simplepie
 808  *        handles both, but we don't claim it will work well, and are reasonably certain it won't.
 809  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
 810  *             It is this person's stuff that is going to be updated.
 811  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
 812  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
 813  *             have a contact record.
 814  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
 815  *        might not) try and subscribe to it.
 816  *
 817  */
 818
 819 function consume_feed($xml,$importer,$contact, &$hub, $datedir = 0) {
 820
 821         require_once('simplepie/simplepie.inc');
 822
 823         $feed = new SimplePie();
 824         $feed->set_raw_data($xml);
 825         if($datedir)
 826                 $feed->enable_order_by_date(true);
 827         else
 828                 $feed->enable_order_by_date(false);
 829         $feed->init();
 830
 831         // Check at the feed level for updated contact name and/or photo
 832
 833         $name_updated  = '';
 834         $new_name = '';
 835         $photo_timestamp = '';
 836         $photo_url = '';
 837
 838
 839         $hubs = $feed->get_links('hub');
 840
 841         if(count($hubs))
 842                 $hub = implode(',', $hubs);
 843
 844         $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
 845         if($rawtags) {
 846                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
 847                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
 848                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
 849                         $new_name = $elems['name'][0]['data'];
 850                 }
 851                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
 852                         $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
 853                         $photo_url = $elems['link'][0]['attribs']['']['href'];
 854                 }
 855         }
 856
 857         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
 858                 logger('Consume feed: Updating photo for ' . $contact['name']);
 859                 require_once("Photo.php");
 860                 $photo_failure = false;
 861                 $have_photo = false;
 862
 863                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
 864                         intval($contact['id']),
 865                         intval($contact['uid'])
 866                 );
 867                 if(count($r)) {
 868                         $resource_id = $r[0]['resource-id'];
 869                         $have_photo = true;
 870                 }
 871                 else {
 872                         $resource_id = photo_new_resource();
 873                 }
 874
 875                 $img_str = fetch_url($photo_url,true);
 876                 $img = new Photo($img_str);
 877                 if($img->is_valid()) {
 878                         if($have_photo) {
 879                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
 880                                         dbesc($resource_id),
 881                                         intval($contact['id']),
 882                                         intval($contact['uid'])
 883                                 );
 884                         }
 885
 886                         $img->scaleImageSquare(175);
 887
 888                         $hash = $resource_id;
 889                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 4);
 890
 891                         $img->scaleImage(80);
 892                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 5);
 893
 894                         $img->scaleImage(48);
 895                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 6);
 896
 897                         $a = get_app();
 898
 899                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
 900                                 WHERE `uid` = %d AND `id` = %d LIMIT 1",
 901                                 dbesc(datetime_convert()),
 902                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.jpg'),
 903                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.jpg'),
 904                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.jpg'),
 905                                 intval($contact['uid']),
 906                                 intval($contact['id'])
 907                         );
 908                 }
 909         }
 910
 911         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
 912                 q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
 913                         dbesc(notags(trim($new_name))),
 914                         dbesc(datetime_convert()),
 915                         intval($contact['uid']),
 916                         intval($contact['id'])
 917                 );
 918         }
 919
 920         // Now process the feed
 921         if($feed->get_item_quantity()) {
 922                 foreach($feed->get_items() as $item) {
 923
 924                         $deleted = false;
 925
 926                         $rawdelete = $item->get_item_tags( NAMESPACE_TOMB, 'deleted-entry');
 927                         if(isset($rawdelete[0]['attribs']['']['ref'])) {
 928                                 $uri = $rawthread[0]['attribs']['']['ref'];
 929                                 $deleted = true;
 930                                 if(isset($rawdelete[0]['attribs']['']['when'])) {
 931                                         $when = $rawthread[0]['attribs']['']['when'];
 932                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
 933                                 }
 934                                 else
 935                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
 936                         }
 937                         if($deleted && is_array($contact)) {
 938                                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `contact-id` = %d LIMIT 1",
 939                                         dbesc($uri),
 940                                         intval($importer['uid']),
 941                                         intval($contact['id'])
 942                                 );
 943                                 if(count($r)) {
 944                                         $item = $r[0];
 945                                         if($item['uri'] == $item['parent-uri']) {
 946                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
 947                                                         `body` = '', `title` = ''
 948                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
 949                                                         dbesc($when),
 950                                                         dbesc(datetime_convert()),
 951                                                         dbesc($item['uri']),
 952                                                         intval($importer['uid'])
 953                                                 );
 954                                         }
 955                                         else {
 956                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
 957                                                         `body` = '', `title` = ''
 958                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 959                                                         dbesc($when),
 960                                                         dbesc(datetime_convert()),
 961                                                         dbesc($uri),
 962                                                         intval($importer['uid'])
 963                                                 );
 964                                                 if($item['last-child']) {
 965                                                         // ensure that last-child is set in case the comment that had it just got wiped.
 966                                                         $q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
 967                                                                 dbesc(datetime_convert()),
 968                                                                 dbesc($item['parent-uri']),
 969                                                                 intval($item['uid'])
 970                                                         );
 971                                                         // who is the last child now?
 972                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
 973                                                                 ORDER BY `created` DESC LIMIT 1",
 974                                                                         dbesc($item['parent-uri']),
 975                                                                         intval($importer['uid'])
 976                                                         );
 977                                                         if(count($r)) {
 978                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
 979                                                                         intval($r[0]['id'])
 980                                                                 );
 981                                                         }
 982                                                 }
 983                                         }
 984                                 }
 985                                 continue;
 986                         }
 987
 988
 989                         $is_reply = false;
 990                         $item_id = $item->get_id();
 991                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
 992                         if(isset($rawthread[0]['attribs']['']['ref'])) {
 993                                 $is_reply = true;
 994                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
 995                         }
 996
 997
 998                         if(($is_reply) && is_array($contact)) {
 999
1000                                 // Have we seen it? If not, import it.
1001
1002                                 $item_id = $item->get_id();
1003
1004                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1005                                         dbesc($item_id),
1006                                         intval($importer['uid'])
1007                                 );
1008                                 // FIXME update content if 'updated' changes
1009                                 if(count($r)) {
1010                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1011                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
1012                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1013                                                         dbesc(datetime_convert()),
1014                                                         dbesc($parent_uri),
1015                                                         intval($importer['uid'])
1016                                                 );
1017                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1018                                                         intval($allow[0]['data']),
1019                                                         dbesc(datetime_convert()),
1020                                                         dbesc($item_id),
1021                                                         intval($importer['uid'])
1022                                                 );
1023                                         }
1024                                         continue;
1025                                 }
1026                                 $datarray = get_atom_elements($feed,$item);
1027                                 if($contact['network'] === 'stat') {
1028                                         if(strlen($datarray['title']))
1029                                                 unset($datarray['title']);
1030                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1031                                                 dbesc(datetime_convert()),
1032                                                 dbesc($parent_uri),
1033                                                 intval($importer['uid'])
1034                                         );
1035                                         $datarray['last-child'] = 1;
1036                                 }
1037                                 $datarray['parent-uri'] = $parent_uri;
1038                                 $datarray['uid'] = $importer['uid'];
1039                                 $datarray['contact-id'] = $contact['id'];
1040                                 if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
1041                                         $datarray['type'] = 'activity';
1042                                         $datarray['gravity'] = GRAVITY_LIKE;
1043                                 }
1044
1045                                 $r = item_store($datarray);
1046                                 continue;
1047                         }
1048
1049                         else {
1050                                 // Head post of a conversation. Have we seen it? If not, import it.
1051
1052                                 $item_id = $item->get_id();
1053                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1054                                         dbesc($item_id),
1055                                         intval($importer['uid'])
1056                                 );
1057                                 if(count($r)) {
1058                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1059                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
1060                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1061                                                         intval($allow[0]['data']),
1062                                                         dbesc(datetime_convert()),
1063                                                         dbesc($item_id),
1064                                                         intval($importer['uid'])
1065                                                 );
1066                                         }
1067                                         continue;
1068                                 }
1069                                 $datarray = get_atom_elements($feed,$item);
1070
1071                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
1072                                         logger('consume-feed: New follower');
1073                                         new_follower($importer,$contact,$datarray,$item);
1074                                         return;
1075                                 }
1076                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
1077                                         lose_follower($importer,$contact,$datarray,$item);
1078                                         return;
1079                                 }
1080                                 if(! is_array($contact))
1081                                         return;
1082
1083                                 if($contact['network'] === 'stat') {
1084                                         if(strlen($datarray['title']))
1085                                                 unset($datarray['title']);
1086                                         $datarray['last-child'] = 1;
1087                                 }
1088
1089                                 $datarray['parent-uri'] = $item_id;
1090                                 $datarray['uid'] = $importer['uid'];
1091                                 $datarray['contact-id'] = $contact['id'];
1092                                 $r = item_store($datarray);
1093                                 continue;
1094
1095                         }
1096                 }
1097         }
1098
1099 }
1100
1101 function new_follower($importer,$contact,$datarray,$item) {
1102         $url = notags(trim($datarray['author-link']));
1103         $name = notags(trim($datarray['author-name']));
1104         $photo = notags(trim($datarray['author-avatar']));
1105
1106         $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
1107         if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
1108                 $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
1109
1110         if(is_array($contact)) {
1111                 if($contact['network'] == 'stat' && $contact['rel'] == REL_FAN) {
1112                         $r = q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d AND `uid` = %d LIMIT 1",
1113                                 intval(REL_BUD),
1114                                 intval($contact['id']),
1115                                 intval($importer['uid'])
1116                         );
1117                 }
1118
1119                 // send email notification to owner?
1120         }
1121         else {
1122
1123                 // create contact record - set to readonly
1124
1125                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `nick`, `photo`, `network`, `rel`,
1126                         `blocked`, `readonly`, `pending` )
1127                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 1, 1 ) ",
1128                         intval($importer['uid']),
1129                         dbesc(datetime_convert()),
1130                         dbesc($url),
1131                         dbesc($name),
1132                         dbesc($nick),
1133                         dbesc($photo),
1134                         dbesc('stat'),
1135                         intval(REL_VIP)
1136                 );
1137                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 AND `rel` = %d LIMIT 1",
1138                                 intval($importer['uid']),
1139                                 dbesc($url),
1140                                 intval(REL_VIP)
1141                 );
1142                 if(count($r))
1143                                 $contact_record = $r[0];
1144
1145                 // create notification
1146                 $hash = random_string();
1147
1148                 if(is_array($contact_record)) {
1149                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
1150                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
1151                                 intval($importer['uid']),
1152                                 intval($contact_record['id']),
1153                                 dbesc($hash),
1154                                 dbesc(datetime_convert())
1155                         );
1156                 }
1157                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1158                         intval($importer['uid'])
1159                 );
1160                 if(count($r)) {
1161                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) && ($r[0]['page-flags'] == PAGE_NORMAL)) {
1162                                 $email_tpl = load_view_file('view/follow_notify_eml.tpl');
1163                                 $email = replace_macros($email_tpl, array(
1164                                         '$requestor' => ((strlen($name)) ? $name : t('[Name Withheld]')),
1165                                         '$url' => $url,
1166                                         '$myname' => $r[0]['username'],
1167                                         '$siteurl' => $a->get_baseurl(),
1168                                         '$sitename' => $a->config['sitename']
1169                                 ));
1170                                 $res = mail($r[0]['email'],
1171                                         t("You have a new follower at ") . $a->config['sitename'],
1172                                         $email,
1173                                         'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] );
1174
1175                         }
1176                 }
1177         }
1178 }
1179
1180 function lose_follower($importer,$contact,$datarray,$item) {
1181
1182         if(($contact['rel'] == REL_BUD) || ($contact['rel'] == REL_FAN)) {
1183                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
1184                         intval(REL_FAN),
1185                         intval($contact['id'])
1186                 );
1187         }
1188         else {
1189                 contact_remove($contact['id']);
1190         }
1191 }
1192
1193
1194 function subscribe_to_hub($url,$importer,$contact) {
1195
1196         if(is_array($importer)) {
1197                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
1198                         intval($importer['uid'])
1199                 );
1200         }
1201         if(! count($r))
1202                 return;
1203
1204         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
1205
1206         // Use a single verify token, even if multiple hubs
1207
1208         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
1209
1210         $params= 'hub.mode=subscribe&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
1211
1212         logger('subscribe_to_hub: subscribing ' . $contact['name'] . ' to hub ' . $url . ' with verifier ' . $verify_token);
1213
1214         if(! strlen($contact['hub-verify'])) {
1215                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d LIMIT 1",
1216                         dbesc($verify_token),
1217                         intval($contact['id'])
1218                 );
1219         }
1220
1221         post_url($url,$params);
1222         return;
1223
1224 }
1225
1226
1227 function atom_author($tag,$name,$uri,$h,$w,$photo) {
1228         $o = '';
1229         if(! $tag)
1230                 return $o;
1231         $name = xmlify($name);
1232         $uri = xmlify($uri);
1233         $h = intval($h);
1234         $w = intval($w);
1235         $photo = xmlify($photo);
1236
1237
1238         $o .= "<$tag>\r\n";
1239         $o .= "<name>$name</name>\r\n";
1240         $o .= "<uri>$uri</uri>\r\n";
1241         $o .= '<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1242         $o .= '<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1243
1244         call_hooks('atom_author', $o);
1245
1246         $o .= "</$tag>\r\n";
1247         return $o;
1248 }
1249
1250 function atom_entry($item,$type,$author,$owner,$comment = false) {
1251
1252         if($item['deleted'])
1253                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
1254
1255         $a = get_app();
1256
1257         $o = "\r\n\r\n<entry>\r\n";
1258
1259         if(is_array($author))
1260                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
1261         else
1262                 $o .= atom_author('author',$item['name'],$item['url'],80,80,$item['thumb']);
1263         if(strlen($item['owner-name']))
1264                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
1265
1266         if($item['parent'] != $item['id'])
1267                 $o .= '<thr:in-reply-to ref="' . xmlify($item['parent-uri']) . '" type="text/html" href="' .  xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1268
1269         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
1270         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
1271         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
1272         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
1273         $o .= '<content type="' . $type . '" >' . xmlify(($type === 'html') ? bbcode($item['body']) : $item['body']) . '</content>' . "\r\n";
1274         $o .= '<link rel="alternate" href="' . xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1275         if($comment)
1276                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
1277
1278         if($item['location']) {
1279                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
1280                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
1281         }
1282
1283         if($item['coord'])
1284                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
1285
1286         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
1287                 $o .= '<dfrn:private>1</dfrn:private>' . "\r\n";
1288
1289         $verb = construct_verb($item);
1290         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
1291         $actobj = construct_activity_object($item);
1292         if(strlen($actobj))
1293                 $o .= $actobj;
1294         $actarg = construct_activity_target($item);
1295         if(strlen($actarg))
1296                 $o .= $actarg;
1297
1298         $mentioned = get_mentions($item);
1299         if($mentioned)
1300                 $o .= $mentioned;
1301
1302         call_hooks('atom_entry', $o);
1303
1304         $o .= '</entry>' . "\r\n";
1305
1306         return $o;
1307 }
1308