include/items.php

   1 <?php
   2
   3 require_once('bbcode.php');
   4 require_once('oembed.php');
   5 require_once('include/salmon.php');
   6
   7 function get_feed_for(&$a, $dfrn_id, $owner_nick, $last_update, $direction = 0) {
   8
   9
  10         // default permissions - anonymous user
  11
  12         if(! strlen($owner_nick))
  13                 killme();
  14
  15         $sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid`  = '' AND `deny_gid`  = '' ";
  16
  17         $r = q("SELECT `contact`.*, `user`.`uid` AS `user_uid`, `user`.`nickname`, `user`.`timezone`
  18                 FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
  19                 WHERE `contact`.`self` = 1 AND `user`.`nickname` = '%s' LIMIT 1",
  20                 dbesc($owner_nick)
  21         );
  22
  23         if(! count($r))
  24                 killme();
  25
  26         $owner = $r[0];
  27         $owner_id = $owner['user_uid'];
  28         $owner_nick = $owner['nickname'];
  29
  30         $birthday = feed_birthday($owner_id,$owner['timezone']);
  31
  32         if(strlen($dfrn_id)) {
  33
  34                 $sql_extra = '';
  35                 switch($direction) {
  36                         case (-1):
  37                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  38                                 $my_id = $dfrn_id;
  39                                 break;
  40                         case 0:
  41                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  42                                 $my_id = '1:' . $dfrn_id;
  43                                 break;
  44                         case 1:
  45                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  46                                 $my_id = '0:' . $dfrn_id;
  47                                 break;
  48                         default:
  49                                 return false;
  50                                 break; // NOTREACHED
  51                 }
  52
  53                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
  54                         intval($owner_id)
  55                 );
  56
  57                 if(! count($r))
  58                         killme();
  59
  60                 $contact = $r[0];
  61                 $groups = init_groups_visitor($contact['id']);
  62
  63                 if(count($groups)) {
  64                         for($x = 0; $x < count($groups); $x ++)
  65                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
  66                         $gs = implode('|', $groups);
  67                 }
  68                 else
  69                         $gs = '<<>>' ; // Impossible to match
  70
  71                 $sql_extra = sprintf("
  72                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
  73                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
  74                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
  75                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
  76                 ",
  77                         intval($contact['id']),
  78                         intval($contact['id']),
  79                         dbesc($gs),
  80                         dbesc($gs)
  81                 );
  82         }
  83
  84         if($dfrn_id === '' || $dfrn_id === '*')
  85                 $sort = 'DESC';
  86         else
  87                 $sort = 'ASC';
  88
  89         if(! strlen($last_update))
  90                 $last_update = 'now -30 days';
  91
  92         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
  93
  94         $r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
  95                 `contact`.`name`, `contact`.`photo`, `contact`.`url`,
  96                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
  97                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
  98                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`
  99                 FROM `item` LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 100                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1 AND `item`.`parent` != 0
 101                 AND `item`.`wall` = 1 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 102                 AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 103                 $sql_extra
 104                 ORDER BY `parent` %s, `created` ASC LIMIT 0, 300",
 105                 intval($owner_id),
 106                 dbesc($check_date),
 107                 dbesc($check_date),
 108                 dbesc($sort)
 109         );
 110
 111         // Will check further below if this actually returned results.
 112         // We will provide an empty feed if that is the case.
 113
 114         $items = $r;
 115
 116         $feed_template = load_view_file('view/atom_feed.tpl');
 117
 118         $atom = '';
 119
 120         $hubxml = feed_hublinks();
 121
 122         $salmon = feed_salmonlinks($owner_nick);
 123
 124         $atom .= replace_macros($feed_template, array(
 125                 '$version'      => xmlify(FRIENDIKA_VERSION),
 126                 '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 127                 '$feed_title'   => xmlify($owner['name']),
 128                 '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
 129                 '$hub'          => $hubxml,
 130                 '$salmon'       => $salmon,
 131                 '$name'         => xmlify($owner['name']),
 132                 '$profile_page' => xmlify($owner['url']),
 133                 '$photo'        => xmlify($owner['photo']),
 134                 '$thumb'        => xmlify($owner['thumb']),
 135                 '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 136                 '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 137                 '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME)) ,
 138                 '$birthday'     => ((strlen($birthday)) ? '<dfrn:birthday>' . xmlify($birthday) . '</dfrn:birthday>' : '')
 139         ));
 140
 141         call_hooks('atom_feed', $atom);
 142
 143         if(! count($items)) {
 144
 145                 call_hooks('atom_feed_end', $atom);
 146
 147                 $atom .= '</feed>' . "\r\n";
 148                 return $atom;
 149         }
 150
 151         foreach($items as $item) {
 152
 153                 // public feeds get html, our own nodes use bbcode
 154
 155                 if($dfrn_id === '') {
 156                         $type = 'html';
 157                 }
 158                 else {
 159                         $type = 'text';
 160                 }
 161
 162                 $atom .= atom_entry($item,$type,null,$owner,true);
 163         }
 164
 165         call_hooks('atom_feed_end', $atom);
 166
 167         $atom .= '</feed>' . "\r\n";
 168
 169         return $atom;
 170 }
 171
 172
 173 function construct_verb($item) {
 174         if($item['verb'])
 175                 return $item['verb'];
 176         return ACTIVITY_POST;
 177 }
 178
 179 function construct_activity_object($item) {
 180
 181         if($item['object']) {
 182                 $o = '<as:object>' . "\r\n";
 183                 $r = @simplexml_load_string($item['object']);
 184                 if($r->type)
 185                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 186                 if($r->id)
 187                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 188                 if($r->title)
 189                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 190                 if($r->link) {
 191                         if(substr($r->link,0,1) === '<')
 192                                 $o .= $r->link;
 193                         else
 194                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 195                 }
 196                 if($r->content)
 197                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 198                 $o .= '</as:object>' . "\r\n";
 199                 return $o;
 200         }
 201
 202         return '';
 203 }
 204
 205 function construct_activity_target($item) {
 206
 207         if($item['target']) {
 208                 $o = '<as:target>' . "\r\n";
 209                 $r = @simplexml_load_string($item['target']);
 210                 if($r->type)
 211                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 212                 if($r->id)
 213                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 214                 if($r->title)
 215                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 216                 if($r->link) {
 217                         if(substr($r->link,0,1) === '<')
 218                                 $o .= $r->link;
 219                         else
 220                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 221                 }
 222                 if($r->content)
 223                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 224                 $o .= '</as:target>' . "\r\n";
 225                 return $o;
 226         }
 227
 228         return '';
 229 }
 230
 231
 232
 233
 234 function get_atom_elements($feed,$item) {
 235
 236         require_once('library/HTMLPurifier.auto.php');
 237         require_once('include/html2bbcode.php');
 238
 239         $best_photo = array();
 240
 241         $res = array();
 242
 243         $author = $item->get_author();
 244         $res['author-name'] = unxmlify($author->get_name());
 245         $res['author-link'] = unxmlify($author->get_link());
 246         $res['uri'] = unxmlify($item->get_id());
 247         $res['title'] = unxmlify($item->get_title());
 248         $res['body'] = unxmlify($item->get_content());
 249         $res['plink'] = unxmlify($item->get_link(0));
 250
 251         // look for a photo. We should check media size and find the best one,
 252         // but for now let's just find any author photo
 253
 254         $rawauthor = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 255
 256         if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 257                 $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 258                 foreach($base as $link) {
 259                         if(! $res['author-avatar']) {
 260                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 261                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 262                         }
 263                 }
 264         }
 265
 266         $rawactor = $item->get_item_tags(NAMESPACE_ACTIVITY, 'actor');
 267
 268         if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 269                 $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 270                 if($base && count($base)) {
 271                         foreach($base as $link) {
 272                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 273                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 274                                 if(! $res['author-avatar']) {
 275                                         if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 276                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 277                                 }
 278                         }
 279                 }
 280         }
 281
 282         // No photo/profile-link on the item - look at the feed level
 283
 284         if((! (x($res,'author-link'))) || (! (x($res,'author-avatar')))) {
 285                 $rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 286                 if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 287                         $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 288                         foreach($base as $link) {
 289                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 290                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 291                                 if(! $res['author-avatar']) {
 292                                         if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 293                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 294                                 }
 295                         }
 296                 }
 297
 298                 $rawactor = $feed->get_feed_tags(NAMESPACE_ACTIVITY, 'subject');
 299
 300                 if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 301                         $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 302
 303                         if($base && count($base)) {
 304                                 foreach($base as $link) {
 305                                         if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 306                                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 307                                         if(! (x($res,'author-avatar'))) {
 308                                                 if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 309                                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 310                                         }
 311                                 }
 312                         }
 313                 }
 314         }
 315
 316
 317         /**
 318          * If there's a copy of the body content which is guaranteed to have survived mangling in transit, use it.
 319          */
 320
 321         $have_real_body = false;
 322
 323         $rawenv = $item->get_item_tags(NAMESPACE_DFRN, 'env');
 324         if($rawenv) {
 325                 $have_real_body = true;
 326                 $res['body'] = $rawenv[0]['data'];
 327                 $res['body'] = str_replace(array(' ',"\t","\r","\n"), array('','','',''),$res['body']);
 328                 // make sure nobody is trying to sneak some html tags by us
 329                 $res['body'] = notags(base64url_decode($res['body']));
 330         }
 331
 332         $maxlen = get_max_import_size();
 333         if($maxlen && (strlen($res['body']) > $maxlen))
 334                 $res['body'] = substr($res['body'],0, $maxlen);
 335
 336         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 337         // the content type. Our own network only emits text normally, though it might have been converted to
 338         // html if we used a pubsubhubbub transport. But if we see even one html tag in our text, we will
 339         // have to assume it is all html and needs to be purified.
 340
 341         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 342         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 343         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 344         // html.
 345
 346
 347         if((strpos($res['body'],'<') !== false) || (strpos($res['body'],'>') !== false)) {
 348
 349                 $res['body'] = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 350                         '[youtube]$1[/youtube]', $res['body']);
 351
 352                 $res['body'] = oembed_html2bbcode($res['body']);
 353
 354                 $config = HTMLPurifier_Config::createDefault();
 355                 $config->set('Cache.DefinitionImpl', null);
 356
 357                 // we shouldn't need a whitelist, because the bbcode converter
 358                 // will strip out any unsupported tags.
 359                 // $config->set('HTML.Allowed', 'p,b,a[href],i');
 360
 361                 $purifier = new HTMLPurifier($config);
 362                 $res['body'] = $purifier->purify($res['body']);
 363
 364                 $res['body'] = html2bbcode($res['body']);
 365         }
 366
 367         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 368         if($allow && $allow[0]['data'] == 1)
 369                 $res['last-child'] = 1;
 370         else
 371                 $res['last-child'] = 0;
 372
 373         $private = $item->get_item_tags(NAMESPACE_DFRN,'private');
 374         if($private && $private[0]['data'] == 1)
 375                 $res['private'] = 1;
 376         else
 377                 $res['private'] = 0;
 378
 379
 380         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 381         if($rawlocation)
 382                 $res['location'] = unxmlify($rawlocation[0]['data']);
 383
 384
 385         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 386         if($rawcreated)
 387                 $res['created'] = unxmlify($rawcreated[0]['data']);
 388
 389
 390         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 391         if($rawedited)
 392                 $res['edited'] = unxmlify($rawedited[0]['data']);
 393
 394         if((x($res,'edited')) && (! (x($res,'created'))))
 395                 $res['created'] = $res['edited'];
 396
 397         if(! $res['created'])
 398                 $res['created'] = $item->get_date('c');
 399
 400         if(! $res['edited'])
 401                 $res['edited'] = $item->get_date('c');
 402
 403
 404         // Disallow time travelling posts
 405
 406         $d1 = strtotime($res['created']);
 407         $d2 = strtotime($res['edited']);
 408         $d3 = strtotime('now');
 409
 410         if($d1 > $d3)
 411                 $res['created'] = datetime_convert();
 412         if($d2 > $d3)
 413                 $res['edited'] = datetime_convert();
 414
 415         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 416         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 417                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 418         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 419                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 420         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 421                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 422         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 423                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 424
 425         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 426                 $base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 427
 428                 foreach($base as $link) {
 429                         if(! $res['owner-avatar']) {
 430                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 431                                         $res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
 432                         }
 433                 }
 434         }
 435
 436         $rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
 437         if($rawgeo)
 438                 $res['coord'] = unxmlify($rawgeo[0]['data']);
 439
 440
 441         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 442
 443         // select between supported verbs
 444
 445         if($rawverb) {
 446                 $res['verb'] = unxmlify($rawverb[0]['data']);
 447         }
 448
 449         // translate OStatus unfollow to activity streams if it happened to get selected
 450
 451         if((x($res,'verb')) && ($res['verb'] === 'http://ostatus.org/schema/1.0/unfollow'))
 452                 $res['verb'] = ACTIVITY_UNFOLLOW;
 453
 454
 455
 456         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 457
 458         if($rawobj) {
 459                 $res['object'] = '<object>' . "\n";
 460                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 461                         $res['object-type'] = $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 462                         $res['object'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 463                 }
 464                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 465                         $res['object'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 466                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 467                         $res['object'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 468                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 469                         $res['object'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 470                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 471                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 472                         if(! $body)
 473                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 474                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 475                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 476                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 477
 478                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 479                                         '[youtube]$1[/youtube]', $body);
 480
 481                                 $config = HTMLPurifier_Config::createDefault();
 482                                 $config->set('Cache.DefinitionImpl', null);
 483
 484                                 $purifier = new HTMLPurifier($config);
 485                                 $body = $purifier->purify($body);
 486                                 $body = html2bbcode($body);
 487                         }
 488
 489                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 490                 }
 491
 492                 $res['object'] .= '</object>' . "\n";
 493         }
 494
 495         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'target');
 496
 497         if($rawobj) {
 498                 $res['target'] = '<target>' . "\n";
 499                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 500                         $res['target'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 501                 }
 502                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 503                         $res['target'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 504
 505                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 506                         $res['target'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 507                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 508                         $res['target'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 509                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 510                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 511                         if(! $body)
 512                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 513                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 514                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 515                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 516
 517                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 518                                         '[youtube]$1[/youtube]', $body);
 519
 520                                 $config = HTMLPurifier_Config::createDefault();
 521                                 $config->set('Cache.DefinitionImpl', null);
 522
 523                                 $purifier = new HTMLPurifier($config);
 524                                 $body = $purifier->purify($body);
 525                                 $body = html2bbcode($body);
 526                         }
 527
 528                         $res['target'] .= '<content>' . $body . '</content>' . "\n";
 529                 }
 530
 531                 $res['target'] .= '</target>' . "\n";
 532         }
 533
 534         $arr = array('feed' => $feed, 'item' => $item, 'result' => $res);
 535
 536         call_hooks('parse_atom', $arr);
 537
 538         return $res;
 539 }
 540
 541 function encode_rel_links($links) {
 542         $o = '';
 543         if(! ((is_array($links)) && (count($links))))
 544                 return $o;
 545         foreach($links as $link) {
 546                 $o .= '<link ';
 547                 if($link['attribs']['']['rel'])
 548                         $o .= 'rel="' . $link['attribs']['']['rel'] . '" ';
 549                 if($link['attribs']['']['type'])
 550                         $o .= 'type="' . $link['attribs']['']['type'] . '" ';
 551                 if($link['attribs']['']['href'])
 552                         $o .= 'href="' . $link['attribs']['']['href'] . '" ';
 553                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['width'])
 554                         $o .= 'media:width="' . $link['attribs'][NAMESPACE_MEDIA]['width'] . '" ';
 555                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['height'])
 556                         $o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
 557                 $o .= ' />' . "\n" ;
 558         }
 559         return xmlify($o);
 560 }
 561
 562 function item_store($arr,$force_parent = false) {
 563
 564         if($arr['gravity'])
 565                 $arr['gravity'] = intval($arr['gravity']);
 566         elseif($arr['parent-uri'] == $arr['uri'])
 567                 $arr['gravity'] = 0;
 568         elseif(activity_match($arr['verb'],ACTIVITY_POST))
 569                 $arr['gravity'] = 6;
 570         else
 571                 $arr['gravity'] = 6;   // extensible catchall
 572
 573         if(! x($arr,'type'))
 574                 $arr['type']      = 'remote';
 575
 576         // Shouldn't happen but we want to make absolutely sure it doesn't leak from a plugin.
 577
 578         if((strpos($arr['body'],'<') !== false) || (strpos($arr['body'],'>') !== false))
 579                 $arr['body'] = strip_tags($arr['body']);
 580
 581
 582         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
 583         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : random_string());
 584         $arr['author-name']   = ((x($arr,'author-name'))   ? notags(trim($arr['author-name']))   : '');
 585         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
 586         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
 587         $arr['owner-name']    = ((x($arr,'owner-name'))    ? notags(trim($arr['owner-name']))    : '');
 588         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
 589         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
 590         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
 591         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
 592         $arr['changed']       = datetime_convert();
 593         $arr['title']         = ((x($arr,'title'))         ? notags(trim($arr['title']))         : '');
 594         $arr['location']      = ((x($arr,'location'))      ? notags(trim($arr['location']))      : '');
 595         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
 596         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
 597         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
 598         $arr['deleted']       = 0;
 599         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : '');
 600         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
 601         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
 602         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
 603         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
 604         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
 605         $arr['plink']         = ((x($arr,'plink'))         ? notags(trim($arr['plink']))         : '');
 606         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
 607         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
 608         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
 609         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
 610         $arr['private']       = ((x($arr,'private'))       ? intval($arr['private'])             : 0 );
 611         $arr['body']          = ((x($arr,'body'))          ? trim($arr['body'])                  : '');
 612
 613         if($arr['parent-uri'] === $arr['uri']) {
 614                 $parent_id = 0;
 615                 $allow_cid = $arr['allow_cid'];
 616                 $allow_gid = $arr['allow_gid'];
 617                 $deny_cid  = $arr['deny_cid'];
 618                 $deny_gid  = $arr['deny_gid'];
 619         }
 620         else {
 621
 622                 // find the parent and snarf the item id and ACL's
 623                 // and anything else we need to inherit
 624
 625                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 626                         dbesc($arr['parent-uri']),
 627                         intval($arr['uid'])
 628                 );
 629
 630                 if(count($r)) {
 631
 632                         // is the new message multi-level threaded?
 633                         // even though we don't support it now, preserve the info
 634                         // and re-attach to the conversation parent.
 635
 636                         if($r[0]['uri'] != $r[0]['parent-uri']) {
 637                                 $arr['thr-parent'] = $arr['parent-uri'];
 638                                 $arr['parent-uri'] = $r[0]['parent-uri'];
 639                         }
 640
 641                         $parent_id      = $r[0]['id'];
 642                         $parent_deleted = $r[0]['deleted'];
 643                         $allow_cid      = $r[0]['allow_cid'];
 644                         $allow_gid      = $r[0]['allow_gid'];
 645                         $deny_cid       = $r[0]['deny_cid'];
 646                         $deny_gid       = $r[0]['deny_gid'];
 647                         $arr['wall']    = $r[0]['wall'];
 648                 }
 649                 else {
 650
 651                         // Allow one to see reply tweets from status.net even when
 652                         // we don't have or can't see the original post.
 653
 654                         if($force_parent) {
 655                                 logger('item_store: $force_parent=true, reply converted to top-level post.');
 656                                 $parent_id = 0;
 657                                 $arr['thr-parent'] = $arr['parent-uri'];
 658                                 $arr['parent-uri'] = $arr['uri'];
 659                         }
 660                         else {
 661                                 logger('item_store: item parent was not found - ignoring item');
 662                                 return 0;
 663                         }
 664                 }
 665         }
 666
 667         call_hooks('post_remote',$arr);
 668
 669         dbesc_array($arr);
 670
 671         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
 672
 673         $r = dbq("INSERT INTO `item` (`"
 674                         . implode("`, `", array_keys($arr))
 675                         . "`) VALUES ('"
 676                         . implode("', '", array_values($arr))
 677                         . "')" );
 678
 679         // find the item we just created
 680
 681         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 682                 $arr['uri'],           // already dbesc'd
 683                 intval($arr['uid'])
 684         );
 685         if(count($r)) {
 686                 $current_post = $r[0]['id'];
 687                 logger('item_store: created item ' . $current_post);
 688         }
 689         else {
 690                 logger('item_store: could not locate created item');
 691                 return 0;
 692         }
 693
 694         if((! $parent_id) || ($arr['parent-uri'] === $arr['uri']))
 695                 $parent_id = $current_post;
 696
 697         if(strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid))
 698                 $private = 1;
 699         else
 700                 $private = $arr['private'];
 701
 702         // Set parent id - and also make sure to inherit the parent's ACL's.
 703
 704         $r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
 705                 `deny_cid` = '%s', `deny_gid` = '%s', `private` = %d, `deleted` = %d WHERE `id` = %d LIMIT 1",
 706                 intval($parent_id),
 707                 dbesc($allow_cid),
 708                 dbesc($allow_gid),
 709                 dbesc($deny_cid),
 710                 dbesc($deny_gid),
 711                 intval($private),
 712                 intval($parent_deleted),
 713                 intval($current_post)
 714         );
 715
 716         /**
 717          * If this is now the last-child, force all _other_ children of this parent to *not* be last-child
 718          */
 719
 720         if($arr['last-child']) {
 721                 $r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d",
 722                         dbesc($arr['uri']),
 723                         intval($arr['uid']),
 724                         intval($current_post)
 725                 );
 726         }
 727
 728         return $current_post;
 729 }
 730
 731 function get_item_contact($item,$contacts) {
 732         if(! count($contacts) || (! is_array($item)))
 733                 return false;
 734         foreach($contacts as $contact) {
 735                 if($contact['id'] == $item['contact-id']) {
 736                         return $contact;
 737                         break; // NOTREACHED
 738                 }
 739         }
 740         return false;
 741 }
 742
 743
 744 function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
 745
 746         $a = get_app();
 747
 748         if((! strlen($contact['issued-id'])) && (! $contact['duplex']) && (! ($owner['page-flags'] == PAGE_COMMUNITY)))
 749                 return 3;
 750
 751         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 752
 753         if($contact['duplex'] && $contact['dfrn-id'])
 754                 $idtosend = '0:' . $orig_id;
 755         if($contact['duplex'] && $contact['issued-id'])
 756                 $idtosend = '1:' . $orig_id;
 757
 758         $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
 759
 760         $rino_enable = get_config('system','rino_encrypt');
 761
 762         if(! $rino_enable)
 763                 $rino = 0;
 764
 765         $url = $contact['notify'] . '?dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino=1' : '');
 766
 767         logger('dfrn_deliver: ' . $url);
 768
 769         $xml = fetch_url($url);
 770
 771         $curl_stat = $a->get_curl_code();
 772         if(! $curl_stat)
 773                 return(-1); // timed out
 774
 775         logger('dfrn_deliver: ' . $xml);
 776
 777         if(! $xml)
 778                 return 3;
 779
 780         if(strpos($xml,'<?xml') === false) {
 781                 logger('dfrn_deliver: no valid XML returned');
 782                 logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA);
 783                 return 3;
 784         }
 785
 786         $res = simplexml_load_string($xml);
 787
 788         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 789                 return (($res->status) ? $res->status : 3);
 790
 791         $postvars     = array();
 792         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 793         $challenge    = hex2bin((string) $res->challenge);
 794         $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0);
 795         $rino_allowed = ((intval($res->rino) === 1) ? 1 : 0);
 796
 797         $final_dfrn_id = '';
 798
 799
 800         if(($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 801                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 802                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 803         }
 804         else {
 805                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 806                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 807         }
 808
 809         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 810
 811         if(strpos($final_dfrn_id,':') == 1)
 812                 $final_dfrn_id = substr($final_dfrn_id,2);
 813
 814         if($final_dfrn_id != $orig_id) {
 815                 logger('dfrn_deliver: wrong dfrn_id.');
 816                 // did not decode properly - cannot trust this site
 817                 return 3;
 818         }
 819
 820         $postvars['dfrn_id']      = $idtosend;
 821         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 822         if($dissolve)
 823                 $postvars['dissolve'] = '1';
 824
 825         if(($contact['rel']) && ($contact['rel'] != REL_FAN) && (! $contact['blocked']) && (! $contact['readonly'])) {
 826                 $postvars['data'] = $atom;
 827         }
 828         elseif($owner['page-flags'] == PAGE_COMMUNITY) {
 829                 $postvars['data'] = $atom;
 830         }
 831         else {
 832                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
 833         }
 834
 835         if($rino && $rino_allowed && (! $dissolve)) {
 836                 $key = substr(random_string(),0,16);
 837                 $data = bin2hex(aes_encrypt($postvars['data'],$key));
 838                 $postvars['data'] = $data;
 839                 logger('rino: sent key = ' . $key);
 840
 841
 842                 if($dfrn_version >= 2.1) {
 843                         if(($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 844                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
 845                         }
 846                         else {
 847                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
 848                         }
 849                 }
 850                 else {
 851                         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 852                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
 853                         }
 854                         else {
 855                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
 856                         }
 857                 }
 858
 859                 logger('md5 rawkey ' . md5($postvars['key']));
 860
 861                 $postvars['key'] = bin2hex($postvars['key']);
 862         }
 863
 864         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
 865
 866         $xml = post_url($contact['notify'],$postvars);
 867
 868         logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
 869
 870         $curl_stat = $a->get_curl_code();
 871         if((! $curl_stat) || (! strlen($xml)))
 872                 return(-1); // timed out
 873
 874
 875         if(strpos($xml,'<?xml') === false) {
 876                 logger('dfrn_deliver: phase 2: no valid XML returned');
 877                 logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA);
 878                 return 3;
 879         }
 880
 881         $res = simplexml_load_string($xml);
 882
 883         return $res->status;
 884
 885 }
 886
 887
 888 /**
 889  *
 890  * consume_feed - process atom feed and update anything/everything we might need to update
 891  *
 892  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
 893  *
 894  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
 895  *             It is this person's stuff that is going to be updated.
 896  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
 897  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
 898  *             have a contact record.
 899  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
 900  *        might not) try and subscribe to it.
 901  *
 902  */
 903
 904 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0) {
 905
 906         require_once('simplepie/simplepie.inc');
 907
 908         if(! $contact)
 909                 logger('consume feed: anonymous');
 910         $feed = new SimplePie();
 911         $feed->set_raw_data($xml);
 912         if($datedir)
 913                 $feed->enable_order_by_date(true);
 914         else
 915                 $feed->enable_order_by_date(false);
 916         $feed->init();
 917
 918         if($feed->error())
 919                 logger('consume_feed: Error parsing XML: ' . $feed->error());
 920
 921
 922         // Check at the feed level for updated contact name and/or photo
 923
 924         $name_updated  = '';
 925         $new_name = '';
 926         $photo_timestamp = '';
 927         $photo_url = '';
 928         $birthday = '';
 929
 930         $hubs = $feed->get_links('hub');
 931
 932         if(count($hubs))
 933                 $hub = implode(',', $hubs);
 934
 935         $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
 936         if($rawtags) {
 937                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
 938                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
 939                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
 940                         $new_name = $elems['name'][0]['data'];
 941                 }
 942                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
 943                         $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
 944                         $photo_url = $elems['link'][0]['attribs']['']['href'];
 945                 }
 946
 947                 if((x($rawtags[0]['child'], NAMESPACE_DFRN)) && (x($rawtags[0]['child'][NAMESPACE_DFRN],'birthday'))) {
 948                         $birthday = datetime_convert('UTC','UTC', $rawtags[0]['child'][NAMESPACE_DFRN]['birthday'][0]['data']);
 949                 }
 950         }
 951
 952         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
 953                 logger('consume_feed: Updating photo for ' . $contact['name']);
 954                 require_once("Photo.php");
 955                 $photo_failure = false;
 956                 $have_photo = false;
 957
 958                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
 959                         intval($contact['id']),
 960                         intval($contact['uid'])
 961                 );
 962                 if(count($r)) {
 963                         $resource_id = $r[0]['resource-id'];
 964                         $have_photo = true;
 965                 }
 966                 else {
 967                         $resource_id = photo_new_resource();
 968                 }
 969
 970                 $img_str = fetch_url($photo_url,true);
 971                 $img = new Photo($img_str);
 972                 if($img->is_valid()) {
 973                         if($have_photo) {
 974                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
 975                                         dbesc($resource_id),
 976                                         intval($contact['id']),
 977                                         intval($contact['uid'])
 978                                 );
 979                         }
 980
 981                         $img->scaleImageSquare(175);
 982
 983                         $hash = $resource_id;
 984                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 4);
 985
 986                         $img->scaleImage(80);
 987                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 5);
 988
 989                         $img->scaleImage(48);
 990                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 6);
 991
 992                         $a = get_app();
 993
 994                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
 995                                 WHERE `uid` = %d AND `id` = %d LIMIT 1",
 996                                 dbesc(datetime_convert()),
 997                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.jpg'),
 998                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.jpg'),
 999                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.jpg'),
1000                                 intval($contact['uid']),
1001                                 intval($contact['id'])
1002                         );
1003                 }
1004         }
1005
1006         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
1007                 q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1008                         dbesc(notags(trim($new_name))),
1009                         dbesc(datetime_convert()),
1010                         intval($contact['uid']),
1011                         intval($contact['id'])
1012                 );
1013         }
1014
1015         if(strlen($birthday)) {
1016                 if(substr($birthday,0,4) != $contact['bdyear']) {
1017                         logger('consume_feed: updating birthday: ' . $birthday);
1018
1019                         /**
1020                          *
1021                          * Add new birthday event for this person
1022                          *
1023                          * $bdtext is just a readable placeholder in case the event is shared
1024                          * with others. We will replace it during presentation to our $importer
1025                          * to contain a sparkle link and perhaps a photo.
1026                          *
1027                          */
1028
1029                         $bdtext = t('Birthday:') . ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ;
1030
1031
1032                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`desc`,`type`)
1033                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s' ) ",
1034                                 intval($contact['uid']),
1035                                 intval($contact['id']),
1036                                 dbesc(datetime_convert()),
1037                                 dbesc(datetime_convert()),
1038                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
1039                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
1040                                 dbesc($bdtext),
1041                                 dbesc('birthday')
1042                         );
1043
1044
1045                         // update bdyear
1046
1047                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1048                                 dbesc(substr($birthday,0,4)),
1049                                 intval($contact['uid']),
1050                                 intval($contact['id'])
1051                         );
1052
1053                         // This function is called twice without reloading the contact
1054                         // Make sure we only create one event. This is why &$contact
1055                         // is a reference var in this function
1056
1057                         $contact['bdyear'] = substr($birthday,0,4);
1058                 }
1059
1060         }
1061
1062
1063         // process any deleted entries
1064
1065         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
1066         if(is_array($del_entries) && count($del_entries)) {
1067                 foreach($del_entries as $dentry) {
1068                         $deleted = false;
1069                         if(isset($dentry['attribs']['']['ref'])) {
1070                                 $uri = $dentry['attribs']['']['ref'];
1071                                 $deleted = true;
1072                                 if(isset($dentry['attribs']['']['when'])) {
1073                                         $when = $dentry['attribs']['']['when'];
1074                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
1075                                 }
1076                                 else
1077                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
1078                         }
1079                         if($deleted && is_array($contact)) {
1080                                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `contact-id` = %d LIMIT 1",
1081                                         dbesc($uri),
1082                                         intval($importer['uid']),
1083                                         intval($contact['id'])
1084                                 );
1085                                 if(count($r)) {
1086                                         $item = $r[0];
1087
1088                                         if(! $item['deleted'])
1089                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
1090
1091                                         if($item['uri'] == $item['parent-uri']) {
1092                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1093                                                         `body` = '', `title` = ''
1094                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
1095                                                         dbesc($when),
1096                                                         dbesc(datetime_convert()),
1097                                                         dbesc($item['uri']),
1098                                                         intval($importer['uid'])
1099                                                 );
1100                                         }
1101                                         else {
1102                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1103                                                         `body` = '', `title` = ''
1104                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1105                                                         dbesc($when),
1106                                                         dbesc(datetime_convert()),
1107                                                         dbesc($uri),
1108                                                         intval($importer['uid'])
1109                                                 );
1110                                                 if($item['last-child']) {
1111                                                         // ensure that last-child is set in case the comment that had it just got wiped.
1112                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1113                                                                 dbesc(datetime_convert()),
1114                                                                 dbesc($item['parent-uri']),
1115                                                                 intval($item['uid'])
1116                                                         );
1117                                                         // who is the last child now?
1118                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
1119                                                                 ORDER BY `created` DESC LIMIT 1",
1120                                                                         dbesc($item['parent-uri']),
1121                                                                         intval($importer['uid'])
1122                                                         );
1123                                                         if(count($r)) {
1124                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
1125                                                                         intval($r[0]['id'])
1126                                                                 );
1127                                                         }
1128                                                 }
1129                                         }
1130                                 }
1131                         }
1132                 }
1133         }
1134
1135         // Now process the feed
1136
1137         if($feed->get_item_quantity()) {
1138
1139                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
1140
1141         // in inverse date order
1142                 if ($datedir)
1143                         $items = array_reverse($feed->get_items());
1144                 else
1145                         $items = $feed->get_items();
1146
1147
1148                 foreach($items as $item) {
1149
1150                         $is_reply = false;
1151                         $item_id = $item->get_id();
1152                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
1153                         if(isset($rawthread[0]['attribs']['']['ref'])) {
1154                                 $is_reply = true;
1155                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
1156                         }
1157
1158                         if(($is_reply) && is_array($contact)) {
1159
1160                                 // Have we seen it? If not, import it.
1161
1162                                 $item_id  = $item->get_id();
1163                                 $datarray = get_atom_elements($feed,$item);
1164
1165                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1166                                         dbesc($item_id),
1167                                         intval($importer['uid'])
1168                                 );
1169
1170                                 // Update content if 'updated' changes
1171
1172                                 if(count($r)) {
1173                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
1174                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1175                                                         dbesc($datarray['body']),
1176                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
1177                                                         dbesc($item_id),
1178                                                         intval($importer['uid'])
1179                                                 );
1180                                         }
1181
1182                                         // update last-child if it changes
1183
1184                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1185                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
1186                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1187                                                         dbesc(datetime_convert()),
1188                                                         dbesc($parent_uri),
1189                                                         intval($importer['uid'])
1190                                                 );
1191                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1192                                                         intval($allow[0]['data']),
1193                                                         dbesc(datetime_convert()),
1194                                                         dbesc($item_id),
1195                                                         intval($importer['uid'])
1196                                                 );
1197                                         }
1198                                         continue;
1199                                 }
1200
1201                                 $force_parent = false;
1202                                 if($contact['network'] === 'stat') {
1203                                         $force_parent = true;
1204                                         if(strlen($datarray['title']))
1205                                                 unset($datarray['title']);
1206                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1207                                                 dbesc(datetime_convert()),
1208                                                 dbesc($parent_uri),
1209                                                 intval($importer['uid'])
1210                                         );
1211                                         $datarray['last-child'] = 1;
1212                                 }
1213
1214                                 if(($contact['network'] === 'feed') || (! strlen($contact['notify']))) {
1215                                         // one way feed - no remote comment ability
1216                                         $datarray['last-child'] = 0;
1217                                 }
1218                                 $datarray['parent-uri'] = $parent_uri;
1219                                 $datarray['uid'] = $importer['uid'];
1220                                 $datarray['contact-id'] = $contact['id'];
1221                                 if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
1222                                         $datarray['type'] = 'activity';
1223                                         $datarray['gravity'] = GRAVITY_LIKE;
1224                                 }
1225
1226                                 $r = item_store($datarray,$force_parent);
1227                                 continue;
1228                         }
1229
1230                         else {
1231
1232                                 // Head post of a conversation. Have we seen it? If not, import it.
1233
1234                                 $item_id  = $item->get_id();
1235                                 $datarray = get_atom_elements($feed,$item);
1236
1237                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1238                                         dbesc($item_id),
1239                                         intval($importer['uid'])
1240                                 );
1241
1242                                 // Update content if 'updated' changes
1243
1244                                 if(count($r)) {
1245                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
1246                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1247                                                         dbesc($datarray['body']),
1248                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
1249                                                         dbesc($item_id),
1250                                                         intval($importer['uid'])
1251                                                 );
1252                                         }
1253
1254                                         // update last-child if it changes
1255
1256                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1257                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
1258                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1259                                                         intval($allow[0]['data']),
1260                                                         dbesc(datetime_convert()),
1261                                                         dbesc($item_id),
1262                                                         intval($importer['uid'])
1263                                                 );
1264                                         }
1265                                         continue;
1266                                 }
1267
1268                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
1269                                         logger('consume-feed: New follower');
1270                                         new_follower($importer,$contact,$datarray,$item);
1271                                         return;
1272                                 }
1273                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
1274                                         lose_follower($importer,$contact,$datarray,$item);
1275                                         return;
1276                                 }
1277                                 if(! is_array($contact))
1278                                         return;
1279
1280                                 if($contact['network'] === 'stat') {
1281                                         if(strlen($datarray['title']))
1282                                                 unset($datarray['title']);
1283                                         $datarray['last-child'] = 1;
1284                                 }
1285
1286                                 if(($contact['network'] === 'feed') || (! strlen($contact['notify']))) {
1287                                         // one way feed - no remote comment ability
1288                                         $datarray['last-child'] = 0;
1289                                 }
1290
1291                                 $datarray['parent-uri'] = $item_id;
1292                                 $datarray['uid'] = $importer['uid'];
1293                                 $datarray['contact-id'] = $contact['id'];
1294                                 $r = item_store($datarray);
1295                                 continue;
1296
1297                         }
1298                 }
1299         }
1300 }
1301
1302 function new_follower($importer,$contact,$datarray,$item) {
1303         $url = notags(trim($datarray['author-link']));
1304         $name = notags(trim($datarray['author-name']));
1305         $photo = notags(trim($datarray['author-avatar']));
1306
1307         $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
1308         if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
1309                 $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
1310
1311         if(is_array($contact)) {
1312                 if($contact['network'] == 'stat' && $contact['rel'] == REL_FAN) {
1313                         $r = q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d AND `uid` = %d LIMIT 1",
1314                                 intval(REL_BUD),
1315                                 intval($contact['id']),
1316                                 intval($importer['uid'])
1317                         );
1318                 }
1319
1320                 // send email notification to owner?
1321         }
1322         else {
1323
1324                 // create contact record - set to readonly
1325
1326                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `nick`, `photo`, `network`, `rel`,
1327                         `blocked`, `readonly`, `pending` )
1328                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 1, 1 ) ",
1329                         intval($importer['uid']),
1330                         dbesc(datetime_convert()),
1331                         dbesc($url),
1332                         dbesc($name),
1333                         dbesc($nick),
1334                         dbesc($photo),
1335                         dbesc('stat'),
1336                         intval(REL_VIP)
1337                 );
1338                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 AND `rel` = %d LIMIT 1",
1339                                 intval($importer['uid']),
1340                                 dbesc($url),
1341                                 intval(REL_VIP)
1342                 );
1343                 if(count($r))
1344                                 $contact_record = $r[0];
1345
1346                 // create notification
1347                 $hash = random_string();
1348
1349                 if(is_array($contact_record)) {
1350                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
1351                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
1352                                 intval($importer['uid']),
1353                                 intval($contact_record['id']),
1354                                 dbesc($hash),
1355                                 dbesc(datetime_convert())
1356                         );
1357                 }
1358                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1359                         intval($importer['uid'])
1360                 );
1361                 $a = get_app();
1362                 if(count($r)) {
1363                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) && ($r[0]['page-flags'] == PAGE_NORMAL)) {
1364                                 $email_tpl = load_view_file('view/follow_notify_eml.tpl');
1365                                 $email = replace_macros($email_tpl, array(
1366                                         '$requestor' => ((strlen($name)) ? $name : t('[Name Withheld]')),
1367                                         '$url' => $url,
1368                                         '$myname' => $r[0]['username'],
1369                                         '$siteurl' => $a->get_baseurl(),
1370                                         '$sitename' => $a->config['sitename']
1371                                 ));
1372                                 $res = mail($r[0]['email'],
1373                                         t("You have a new follower at ") . $a->config['sitename'],
1374                                         $email,
1375                                         'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] );
1376
1377                         }
1378                 }
1379         }
1380 }
1381
1382 function lose_follower($importer,$contact,$datarray,$item) {
1383
1384         if(($contact['rel'] == REL_BUD) || ($contact['rel'] == REL_FAN)) {
1385                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
1386                         intval(REL_FAN),
1387                         intval($contact['id'])
1388                 );
1389         }
1390         else {
1391                 contact_remove($contact['id']);
1392         }
1393 }
1394
1395
1396 function subscribe_to_hub($url,$importer,$contact) {
1397
1398         if(is_array($importer)) {
1399                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
1400                         intval($importer['uid'])
1401                 );
1402         }
1403         if(! count($r))
1404                 return;
1405
1406         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
1407
1408         // Use a single verify token, even if multiple hubs
1409
1410         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
1411
1412         $params= 'hub.mode=subscribe&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
1413
1414         logger('subscribe_to_hub: subscribing ' . $contact['name'] . ' to hub ' . $url . ' with verifier ' . $verify_token);
1415
1416         if(! strlen($contact['hub-verify'])) {
1417                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d LIMIT 1",
1418                         dbesc($verify_token),
1419                         intval($contact['id'])
1420                 );
1421         }
1422
1423         post_url($url,$params);
1424         return;
1425
1426 }
1427
1428
1429 function atom_author($tag,$name,$uri,$h,$w,$photo) {
1430         $o = '';
1431         if(! $tag)
1432                 return $o;
1433         $name = xmlify($name);
1434         $uri = xmlify($uri);
1435         $h = intval($h);
1436         $w = intval($w);
1437         $photo = xmlify($photo);
1438
1439
1440         $o .= "<$tag>\r\n";
1441         $o .= "<name>$name</name>\r\n";
1442         $o .= "<uri>$uri</uri>\r\n";
1443         $o .= '<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1444         $o .= '<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1445
1446         call_hooks('atom_author', $o);
1447
1448         $o .= "</$tag>\r\n";
1449         return $o;
1450 }
1451
1452 function atom_entry($item,$type,$author,$owner,$comment = false) {
1453
1454         if($item['deleted'])
1455                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
1456
1457         $a = get_app();
1458
1459         $o = "\r\n\r\n<entry>\r\n";
1460
1461         if(is_array($author))
1462                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
1463         else
1464                 $o .= atom_author('author',$item['name'],$item['url'],80,80,$item['thumb']);
1465         if(strlen($item['owner-name']))
1466                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
1467
1468         if($item['parent'] != $item['id'])
1469                 $o .= '<thr:in-reply-to ref="' . xmlify($item['parent-uri']) . '" type="text/html" href="' .  xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1470
1471         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
1472         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
1473         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
1474         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
1475         $o .= '<dfrn:env>' . base64url_encode($item['body'], true) . '</dfrn:env>' . "\r\n";
1476         $o .= '<content type="' . $type . '" >' . xmlify(($type === 'html') ? bbcode($item['body']) : $item['body']) . '</content>' . "\r\n";
1477         $o .= '<link rel="alternate" type="text/html" href="' . xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1478         if($comment)
1479                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
1480
1481         if($item['location']) {
1482                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
1483                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
1484         }
1485
1486         if($item['coord'])
1487                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
1488
1489         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
1490                 $o .= '<dfrn:private>1</dfrn:private>' . "\r\n";
1491
1492         $verb = construct_verb($item);
1493         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
1494         $actobj = construct_activity_object($item);
1495         if(strlen($actobj))
1496                 $o .= $actobj;
1497         $actarg = construct_activity_target($item);
1498         if(strlen($actarg))
1499                 $o .= $actarg;
1500
1501         $mentioned = get_mentions($item);
1502         if($mentioned)
1503                 $o .= $mentioned;
1504
1505         call_hooks('atom_entry', $o);
1506
1507         $o .= '</entry>' . "\r\n";
1508
1509         return $o;
1510 }
1511
1512 function item_expire($uid,$days) {
1513
1514         if((! $uid) || (! $days))
1515                 return;
1516
1517         $r = q("SELECT * FROM `item`
1518                 WHERE `uid` = %d
1519                 AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY
1520                 AND `id` = `parent`
1521                 AND `deleted` = 0",
1522                 intval($uid),
1523                 intval($days)
1524         );
1525
1526         if(! count($r))
1527                 return;
1528
1529         logger('expire: # items=' . count($r) );
1530
1531         foreach($r as $item) {
1532
1533                 // Only expire posts, not photos and photo comments
1534
1535                 if(strlen($item['resource-id']))
1536                         continue;
1537
1538                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s' WHERE `id` = %d LIMIT 1",
1539                         dbesc(datetime_convert()),
1540                         dbesc(datetime_convert()),
1541                         intval($item['id'])
1542                 );
1543
1544                 // kill the kids
1545
1546                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1547                         dbesc(datetime_convert()),
1548                         dbesc(datetime_convert()),
1549                         dbesc($item['parent-uri']),
1550                         intval($item['uid'])
1551                 );
1552
1553         }
1554
1555         proc_run('php',"include/notifier.php","expire","$uid");
1556
1557 }