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         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 405         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 406                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 407         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 408                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 409         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 410                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 411         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 412                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 413
 414         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 415                 $base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 416
 417                 foreach($base as $link) {
 418                         if(! $res['owner-avatar']) {
 419                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 420                                         $res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
 421                         }
 422                 }
 423         }
 424
 425         $rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
 426         if($rawgeo)
 427                 $res['coord'] = unxmlify($rawgeo[0]['data']);
 428
 429
 430         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 431
 432         // select between supported verbs
 433
 434         if($rawverb) {
 435                 $res['verb'] = unxmlify($rawverb[0]['data']);
 436         }
 437
 438         // translate OStatus unfollow to activity streams if it happened to get selected
 439
 440         if((x($res,'verb')) && ($res['verb'] === 'http://ostatus.org/schema/1.0/unfollow'))
 441                 $res['verb'] = ACTIVITY_UNFOLLOW;
 442
 443
 444
 445         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 446
 447         if($rawobj) {
 448                 $res['object'] = '<object>' . "\n";
 449                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 450                         $res['object-type'] = $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 451                         $res['object'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 452                 }
 453                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 454                         $res['object'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 455                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 456                         $res['object'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 457                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 458                         $res['object'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 459                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 460                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 461                         if(! $body)
 462                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 463                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 464                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 465                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 466
 467                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 468                                         '[youtube]$1[/youtube]', $body);
 469
 470                                 $config = HTMLPurifier_Config::createDefault();
 471                                 $config->set('Cache.DefinitionImpl', null);
 472
 473                                 $purifier = new HTMLPurifier($config);
 474                                 $body = $purifier->purify($body);
 475                                 $body = html2bbcode($body);
 476                         }
 477
 478                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 479                 }
 480
 481                 $res['object'] .= '</object>' . "\n";
 482         }
 483
 484         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'target');
 485
 486         if($rawobj) {
 487                 $res['target'] = '<target>' . "\n";
 488                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 489                         $res['target'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 490                 }
 491                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 492                         $res['target'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 493
 494                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 495                         $res['target'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 496                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 497                         $res['target'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 498                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 499                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 500                         if(! $body)
 501                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 502                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 503                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 504                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 505
 506                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 507                                         '[youtube]$1[/youtube]', $body);
 508
 509                                 $config = HTMLPurifier_Config::createDefault();
 510                                 $config->set('Cache.DefinitionImpl', null);
 511
 512                                 $purifier = new HTMLPurifier($config);
 513                                 $body = $purifier->purify($body);
 514                                 $body = html2bbcode($body);
 515                         }
 516
 517                         $res['target'] .= '<content>' . $body . '</content>' . "\n";
 518                 }
 519
 520                 $res['target'] .= '</target>' . "\n";
 521         }
 522
 523         $arr = array('feed' => $feed, 'item' => $item, 'result' => $res);
 524
 525         call_hooks('parse_atom', $arr);
 526
 527         return $res;
 528 }
 529
 530 function encode_rel_links($links) {
 531         $o = '';
 532         if(! ((is_array($links)) && (count($links))))
 533                 return $o;
 534         foreach($links as $link) {
 535                 $o .= '<link ';
 536                 if($link['attribs']['']['rel'])
 537                         $o .= 'rel="' . $link['attribs']['']['rel'] . '" ';
 538                 if($link['attribs']['']['type'])
 539                         $o .= 'type="' . $link['attribs']['']['type'] . '" ';
 540                 if($link['attribs']['']['href'])
 541                         $o .= 'href="' . $link['attribs']['']['href'] . '" ';
 542                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['width'])
 543                         $o .= 'media:width="' . $link['attribs'][NAMESPACE_MEDIA]['width'] . '" ';
 544                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['height'])
 545                         $o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
 546                 $o .= ' />' . "\n" ;
 547         }
 548         return xmlify($o);
 549 }
 550
 551 function item_store($arr,$force_parent = false) {
 552
 553         if($arr['gravity'])
 554                 $arr['gravity'] = intval($arr['gravity']);
 555         elseif($arr['parent-uri'] == $arr['uri'])
 556                 $arr['gravity'] = 0;
 557         elseif(activity_match($arr['verb'],ACTIVITY_POST))
 558                 $arr['gravity'] = 6;
 559         else
 560                 $arr['gravity'] = 6;   // extensible catchall
 561
 562         if(! x($arr,'type'))
 563                 $arr['type']      = 'remote';
 564
 565         // Shouldn't happen but we want to make absolutely sure it doesn't leak from a plugin.
 566
 567         if((strpos($arr['body'],'<') !== false) || (strpos($arr['body'],'>') !== false))
 568                 $arr['body'] = strip_tags($arr['body']);
 569
 570
 571         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
 572         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : random_string());
 573         $arr['author-name']   = ((x($arr,'author-name'))   ? notags(trim($arr['author-name']))   : '');
 574         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
 575         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
 576         $arr['owner-name']    = ((x($arr,'owner-name'))    ? notags(trim($arr['owner-name']))    : '');
 577         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
 578         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
 579         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
 580         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
 581         $arr['changed']       = datetime_convert();
 582         $arr['title']         = ((x($arr,'title'))         ? notags(trim($arr['title']))         : '');
 583         $arr['location']      = ((x($arr,'location'))      ? notags(trim($arr['location']))      : '');
 584         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
 585         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
 586         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
 587         $arr['deleted']       = 0;
 588         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : '');
 589         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
 590         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
 591         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
 592         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
 593         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
 594         $arr['plink']         = ((x($arr,'plink'))         ? notags(trim($arr['plink']))         : '');
 595         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
 596         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
 597         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
 598         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
 599         $arr['private']       = ((x($arr,'private'))       ? intval($arr['private'])             : 0 );
 600         $arr['body']          = ((x($arr,'body'))          ? trim($arr['body'])                  : '');
 601
 602         if($arr['parent-uri'] === $arr['uri']) {
 603                 $parent_id = 0;
 604                 $allow_cid = $arr['allow_cid'];
 605                 $allow_gid = $arr['allow_gid'];
 606                 $deny_cid  = $arr['deny_cid'];
 607                 $deny_gid  = $arr['deny_gid'];
 608         }
 609         else {
 610
 611                 // find the parent and snarf the item id and ACL's
 612
 613                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 614                         dbesc($arr['parent-uri']),
 615                         intval($arr['uid'])
 616                 );
 617
 618                 if(count($r)) {
 619
 620                         // is the new message multi-level threaded?
 621                         // even though we don't support it now, preserve the info
 622                         // and re-attach to the conversation parent.
 623
 624                         if($r[0]['uri'] != $r[0]['parent-uri']) {
 625                                 $arr['thr-parent'] = $arr['parent-uri'];
 626                                 $arr['parent-uri'] = $r[0]['parent-uri'];
 627                         }
 628
 629                         $parent_id      = $r[0]['id'];
 630                         $parent_deleted = $r[0]['deleted'];
 631                         $allow_cid      = $r[0]['allow_cid'];
 632                         $allow_gid      = $r[0]['allow_gid'];
 633                         $deny_cid       = $r[0]['deny_cid'];
 634                         $deny_gid       = $r[0]['deny_gid'];
 635                 }
 636                 else {
 637
 638                         // Allow one to see reply tweets from status.net even when
 639                         // we don't have or can't see the original post.
 640
 641                         if($force_parent) {
 642                                 logger('item_store: $force_parent=true, reply converted to top-level post.');
 643                                 $parent_id = 0;
 644                                 $arr['thr-parent'] = $arr['parent-uri'];
 645                                 $arr['parent-uri'] = $arr['uri'];
 646                         }
 647                         else {
 648                                 logger('item_store: item parent was not found - ignoring item');
 649                                 return 0;
 650                         }
 651                 }
 652         }
 653
 654         call_hooks('post_remote',$arr);
 655
 656         dbesc_array($arr);
 657
 658         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
 659
 660         $r = dbq("INSERT INTO `item` (`"
 661                         . implode("`, `", array_keys($arr))
 662                         . "`) VALUES ('"
 663                         . implode("', '", array_values($arr))
 664                         . "')" );
 665
 666         // find the item we just created
 667
 668         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 669                 $arr['uri'],           // already dbesc'd
 670                 intval($arr['uid'])
 671         );
 672         if(count($r)) {
 673                 $current_post = $r[0]['id'];
 674                 logger('item_store: created item ' . $current_post);
 675         }
 676         else {
 677                 logger('item_store: could not locate created item');
 678                 return 0;
 679         }
 680
 681         if((! $parent_id) || ($arr['parent-uri'] === $arr['uri']))
 682                 $parent_id = $current_post;
 683
 684         if(strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid))
 685                 $private = 1;
 686         else
 687                 $private = $arr['private'];
 688
 689         // Set parent id - and also make sure to inherit the parent's ACL's.
 690
 691         $r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
 692                 `deny_cid` = '%s', `deny_gid` = '%s', `private` = %d, `deleted` = %d WHERE `id` = %d LIMIT 1",
 693                 intval($parent_id),
 694                 dbesc($allow_cid),
 695                 dbesc($allow_gid),
 696                 dbesc($deny_cid),
 697                 dbesc($deny_gid),
 698                 intval($private),
 699                 intval($parent_deleted),
 700                 intval($current_post)
 701         );
 702
 703         return $current_post;
 704 }
 705
 706 function get_item_contact($item,$contacts) {
 707         if(! count($contacts) || (! is_array($item)))
 708                 return false;
 709         foreach($contacts as $contact) {
 710                 if($contact['id'] == $item['contact-id']) {
 711                         return $contact;
 712                         break; // NOTREACHED
 713                 }
 714         }
 715         return false;
 716 }
 717
 718
 719 function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
 720
 721         $a = get_app();
 722
 723         if((! strlen($contact['issued-id'])) && (! $contact['duplex']) && (! ($owner['page-flags'] == PAGE_COMMUNITY)))
 724                 return 3;
 725
 726         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 727
 728         if($contact['duplex'] && $contact['dfrn-id'])
 729                 $idtosend = '0:' . $orig_id;
 730         if($contact['duplex'] && $contact['issued-id'])
 731                 $idtosend = '1:' . $orig_id;
 732
 733         $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
 734
 735         $rino_enable = get_config('system','rino_encrypt');
 736
 737         if(! $rino_enable)
 738                 $rino = 0;
 739
 740         $url = $contact['notify'] . '?dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino=1' : '');
 741
 742         logger('dfrn_deliver: ' . $url);
 743
 744         $xml = fetch_url($url);
 745
 746         $curl_stat = $a->get_curl_code();
 747         if(! $curl_stat)
 748                 return(-1); // timed out
 749
 750         logger('dfrn_deliver: ' . $xml);
 751
 752         if(! $xml)
 753                 return 3;
 754
 755         if(strpos($xml,'<?xml') === false) {
 756                 logger('dfrn_deliver: no valid XML returned');
 757                 logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA);
 758                 return 3;
 759         }
 760
 761         $res = simplexml_load_string($xml);
 762
 763         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 764                 return (($res->status) ? $res->status : 3);
 765
 766         $postvars     = array();
 767         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 768         $challenge    = hex2bin((string) $res->challenge);
 769         $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0);
 770         $rino_allowed = ((intval($res->rino) === 1) ? 1 : 0);
 771
 772         $final_dfrn_id = '';
 773
 774
 775         if(($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 776                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 777                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 778         }
 779         else {
 780                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 781                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 782         }
 783
 784         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 785
 786         if(strpos($final_dfrn_id,':') == 1)
 787                 $final_dfrn_id = substr($final_dfrn_id,2);
 788
 789         if($final_dfrn_id != $orig_id) {
 790                 logger('dfrn_deliver: wrong dfrn_id.');
 791                 // did not decode properly - cannot trust this site
 792                 return 3;
 793         }
 794
 795         $postvars['dfrn_id']      = $idtosend;
 796         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 797         if($dissolve)
 798                 $postvars['dissolve'] = '1';
 799
 800         if(($contact['rel']) && ($contact['rel'] != REL_FAN) && (! $contact['blocked']) && (! $contact['readonly'])) {
 801                 $postvars['data'] = $atom;
 802         }
 803         elseif($owner['page-flags'] == PAGE_COMMUNITY) {
 804                 $postvars['data'] = $atom;
 805         }
 806         else {
 807                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
 808         }
 809
 810         if($rino && $rino_allowed && (! $dissolve)) {
 811                 $key = substr(random_string(),0,16);
 812                 $data = bin2hex(aes_encrypt($postvars['data'],$key));
 813                 $postvars['data'] = $data;
 814                 logger('rino: sent key = ' . $key);
 815
 816
 817                 if($dfrn_version >= 2.1) {
 818                         if(($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 819                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
 820                         }
 821                         else {
 822                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
 823                         }
 824                 }
 825                 else {
 826                         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 827                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
 828                         }
 829                         else {
 830                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
 831                         }
 832                 }
 833
 834                 logger('md5 rawkey ' . md5($postvars['key']));
 835
 836                 $postvars['key'] = bin2hex($postvars['key']);
 837         }
 838
 839         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
 840
 841         $xml = post_url($contact['notify'],$postvars);
 842
 843         logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
 844
 845         $curl_stat = $a->get_curl_code();
 846         if((! $curl_stat) || (! strlen($xml)))
 847                 return(-1); // timed out
 848
 849
 850         if(strpos($xml,'<?xml') === false) {
 851                 logger('dfrn_deliver: phase 2: no valid XML returned');
 852                 logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA);
 853                 return 3;
 854         }
 855
 856         $res = simplexml_load_string($xml);
 857
 858         return $res->status;
 859
 860 }
 861
 862
 863 /**
 864  *
 865  * consume_feed - process atom feed and update anything/everything we might need to update
 866  *
 867  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
 868  *
 869  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
 870  *             It is this person's stuff that is going to be updated.
 871  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
 872  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
 873  *             have a contact record.
 874  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
 875  *        might not) try and subscribe to it.
 876  *
 877  */
 878
 879 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0) {
 880
 881         require_once('simplepie/simplepie.inc');
 882
 883         $feed = new SimplePie();
 884         $feed->set_raw_data($xml);
 885         if($datedir)
 886                 $feed->enable_order_by_date(true);
 887         else
 888                 $feed->enable_order_by_date(false);
 889         $feed->init();
 890
 891         if($feed->error())
 892                 logger('consume_feed: Error parsing XML: ' . $feed->error());
 893
 894
 895         // Check at the feed level for updated contact name and/or photo
 896
 897         $name_updated  = '';
 898         $new_name = '';
 899         $photo_timestamp = '';
 900         $photo_url = '';
 901         $birthday = '';
 902
 903         $hubs = $feed->get_links('hub');
 904
 905         if(count($hubs))
 906                 $hub = implode(',', $hubs);
 907
 908         $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
 909         if($rawtags) {
 910                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
 911                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
 912                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
 913                         $new_name = $elems['name'][0]['data'];
 914                 }
 915                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
 916                         $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
 917                         $photo_url = $elems['link'][0]['attribs']['']['href'];
 918                 }
 919
 920                 if((x($rawtags[0]['child'], NAMESPACE_DFRN)) && (x($rawtags[0]['child'][NAMESPACE_DFRN],'birthday'))) {
 921                         $birthday = datetime_convert('UTC','UTC', $rawtags[0]['child'][NAMESPACE_DFRN]['birthday'][0]['data']);
 922                 }
 923         }
 924
 925         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
 926                 logger('consume_feed: Updating photo for ' . $contact['name']);
 927                 require_once("Photo.php");
 928                 $photo_failure = false;
 929                 $have_photo = false;
 930
 931                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
 932                         intval($contact['id']),
 933                         intval($contact['uid'])
 934                 );
 935                 if(count($r)) {
 936                         $resource_id = $r[0]['resource-id'];
 937                         $have_photo = true;
 938                 }
 939                 else {
 940                         $resource_id = photo_new_resource();
 941                 }
 942
 943                 $img_str = fetch_url($photo_url,true);
 944                 $img = new Photo($img_str);
 945                 if($img->is_valid()) {
 946                         if($have_photo) {
 947                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
 948                                         dbesc($resource_id),
 949                                         intval($contact['id']),
 950                                         intval($contact['uid'])
 951                                 );
 952                         }
 953
 954                         $img->scaleImageSquare(175);
 955
 956                         $hash = $resource_id;
 957                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 4);
 958
 959                         $img->scaleImage(80);
 960                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 5);
 961
 962                         $img->scaleImage(48);
 963                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 6);
 964
 965                         $a = get_app();
 966
 967                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
 968                                 WHERE `uid` = %d AND `id` = %d LIMIT 1",
 969                                 dbesc(datetime_convert()),
 970                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.jpg'),
 971                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.jpg'),
 972                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.jpg'),
 973                                 intval($contact['uid']),
 974                                 intval($contact['id'])
 975                         );
 976                 }
 977         }
 978
 979         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
 980                 q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
 981                         dbesc(notags(trim($new_name))),
 982                         dbesc(datetime_convert()),
 983                         intval($contact['uid']),
 984                         intval($contact['id'])
 985                 );
 986         }
 987
 988         if(strlen($birthday)) {
 989                 if(substr($birthday,0,4) != $contact['bdyear']) {
 990                         logger('consume_feed: updating birthday: ' . $birthday);
 991
 992                         /**
 993                          *
 994                          * Add new birthday event for this person
 995                          *
 996                          * $bdtext is just a readable placeholder in case the event is shared
 997                          * with others. We will replace it during presentation to our $importer
 998                          * to contain a sparkle link and perhaps a photo.
 999                          *
1000                          */
1001
1002                         $bdtext = t('Birthday:') . ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ;
1003
1004
1005                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`desc`,`type`)
1006                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s' ) ",
1007                                 intval($contact['uid']),
1008                                 intval($contact['id']),
1009                                 dbesc(datetime_convert()),
1010                                 dbesc(datetime_convert()),
1011                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
1012                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
1013                                 dbesc($bdtext),
1014                                 dbesc('birthday')
1015                         );
1016
1017
1018                         // update bdyear
1019
1020                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1021                                 dbesc(substr($birthday,0,4)),
1022                                 intval($contact['uid']),
1023                                 intval($contact['id'])
1024                         );
1025
1026                         // This function is called twice without reloading the contact
1027                         // Make sure we only create one event. This is why &$contact
1028                         // is a reference var in this function
1029
1030                         $contact['bdyear'] = substr($birthday,0,4);
1031                 }
1032
1033         }
1034
1035
1036         // process any deleted entries
1037
1038         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
1039         if(is_array($del_entries) && count($del_entries)) {
1040                 foreach($del_entries as $dentry) {
1041                         $deleted = false;
1042                         if(isset($dentry['attribs']['']['ref'])) {
1043                                 $uri = $dentry['attribs']['']['ref'];
1044                                 $deleted = true;
1045                                 if(isset($dentry['attribs']['']['when'])) {
1046                                         $when = $dentry['attribs']['']['when'];
1047                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
1048                                 }
1049                                 else
1050                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
1051                         }
1052                         if($deleted && is_array($contact)) {
1053                                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `contact-id` = %d LIMIT 1",
1054                                         dbesc($uri),
1055                                         intval($importer['uid']),
1056                                         intval($contact['id'])
1057                                 );
1058                                 if(count($r)) {
1059                                         $item = $r[0];
1060
1061                                         if(! $item['deleted'])
1062                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
1063
1064                                         if($item['uri'] == $item['parent-uri']) {
1065                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1066                                                         `body` = '', `title` = ''
1067                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
1068                                                         dbesc($when),
1069                                                         dbesc(datetime_convert()),
1070                                                         dbesc($item['uri']),
1071                                                         intval($importer['uid'])
1072                                                 );
1073                                         }
1074                                         else {
1075                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1076                                                         `body` = '', `title` = ''
1077                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1078                                                         dbesc($when),
1079                                                         dbesc(datetime_convert()),
1080                                                         dbesc($uri),
1081                                                         intval($importer['uid'])
1082                                                 );
1083                                                 if($item['last-child']) {
1084                                                         // ensure that last-child is set in case the comment that had it just got wiped.
1085                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1086                                                                 dbesc(datetime_convert()),
1087                                                                 dbesc($item['parent-uri']),
1088                                                                 intval($item['uid'])
1089                                                         );
1090                                                         // who is the last child now?
1091                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
1092                                                                 ORDER BY `created` DESC LIMIT 1",
1093                                                                         dbesc($item['parent-uri']),
1094                                                                         intval($importer['uid'])
1095                                                         );
1096                                                         if(count($r)) {
1097                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
1098                                                                         intval($r[0]['id'])
1099                                                                 );
1100                                                         }
1101                                                 }
1102                                         }
1103                                 }
1104                         }
1105                 }
1106         }
1107
1108         // Now process the feed
1109
1110         if($feed->get_item_quantity()) {
1111
1112                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
1113
1114         // in inverse date order
1115                 if ($datedir)
1116                         $items = array_reverse($feed->get_items());
1117                 else
1118                         $items = $feed->get_items();
1119
1120
1121                 foreach($items as $item) {
1122
1123                         $is_reply = false;
1124                         $item_id = $item->get_id();
1125                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
1126                         if(isset($rawthread[0]['attribs']['']['ref'])) {
1127                                 $is_reply = true;
1128                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
1129                         }
1130
1131                         if(($is_reply) && is_array($contact)) {
1132
1133                                 // Have we seen it? If not, import it.
1134
1135                                 $item_id = $item->get_id();
1136
1137                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1138                                         dbesc($item_id),
1139                                         intval($importer['uid'])
1140                                 );
1141
1142                                 // FIXME update content if 'updated' changes
1143                                 if(count($r)) {
1144                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1145                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
1146                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1147                                                         dbesc(datetime_convert()),
1148                                                         dbesc($parent_uri),
1149                                                         intval($importer['uid'])
1150                                                 );
1151                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1152                                                         intval($allow[0]['data']),
1153                                                         dbesc(datetime_convert()),
1154                                                         dbesc($item_id),
1155                                                         intval($importer['uid'])
1156                                                 );
1157                                         }
1158                                         continue;
1159                                 }
1160
1161                                 $datarray = get_atom_elements($feed,$item);
1162                                 $force_parent = false;
1163                                 if($contact['network'] === 'stat') {
1164                                         $force_parent = true;
1165                                         if(strlen($datarray['title']))
1166                                                 unset($datarray['title']);
1167                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1168                                                 dbesc(datetime_convert()),
1169                                                 dbesc($parent_uri),
1170                                                 intval($importer['uid'])
1171                                         );
1172                                         $datarray['last-child'] = 1;
1173                                 }
1174
1175                                 if(($contact['network'] === 'feed') || (! strlen($contact['notify']))) {
1176                                         // one way feed - no remote comment ability
1177                                         $datarray['last-child'] = 0;
1178                                 }
1179                                 $datarray['parent-uri'] = $parent_uri;
1180                                 $datarray['uid'] = $importer['uid'];
1181                                 $datarray['contact-id'] = $contact['id'];
1182                                 if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
1183                                         $datarray['type'] = 'activity';
1184                                         $datarray['gravity'] = GRAVITY_LIKE;
1185                                 }
1186
1187                                 $r = item_store($datarray,$force_parent);
1188                                 continue;
1189                         }
1190
1191                         else {
1192                                 // Head post of a conversation. Have we seen it? If not, import it.
1193
1194                                 $item_id = $item->get_id();
1195                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1196                                         dbesc($item_id),
1197                                         intval($importer['uid'])
1198                                 );
1199                                 if(count($r)) {
1200                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1201                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
1202                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1203                                                         intval($allow[0]['data']),
1204                                                         dbesc(datetime_convert()),
1205                                                         dbesc($item_id),
1206                                                         intval($importer['uid'])
1207                                                 );
1208                                         }
1209                                         continue;
1210                                 }
1211                                 $datarray = get_atom_elements($feed,$item);
1212
1213                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
1214                                         logger('consume-feed: New follower');
1215                                         new_follower($importer,$contact,$datarray,$item);
1216                                         return;
1217                                 }
1218                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
1219                                         lose_follower($importer,$contact,$datarray,$item);
1220                                         return;
1221                                 }
1222                                 if(! is_array($contact))
1223                                         return;
1224
1225                                 if($contact['network'] === 'stat') {
1226                                         if(strlen($datarray['title']))
1227                                                 unset($datarray['title']);
1228                                         $datarray['last-child'] = 1;
1229                                 }
1230
1231                                 if(($contact['network'] === 'feed') || (! strlen($contact['notify']))) {
1232                                         // one way feed - no remote comment ability
1233                                         $datarray['last-child'] = 0;
1234                                 }
1235
1236                                 $datarray['parent-uri'] = $item_id;
1237                                 $datarray['uid'] = $importer['uid'];
1238                                 $datarray['contact-id'] = $contact['id'];
1239                                 $r = item_store($datarray);
1240                                 continue;
1241
1242                         }
1243                 }
1244         }
1245 }
1246
1247 function new_follower($importer,$contact,$datarray,$item) {
1248         $url = notags(trim($datarray['author-link']));
1249         $name = notags(trim($datarray['author-name']));
1250         $photo = notags(trim($datarray['author-avatar']));
1251
1252         $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
1253         if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
1254                 $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
1255
1256         if(is_array($contact)) {
1257                 if($contact['network'] == 'stat' && $contact['rel'] == REL_FAN) {
1258                         $r = q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d AND `uid` = %d LIMIT 1",
1259                                 intval(REL_BUD),
1260                                 intval($contact['id']),
1261                                 intval($importer['uid'])
1262                         );
1263                 }
1264
1265                 // send email notification to owner?
1266         }
1267         else {
1268
1269                 // create contact record - set to readonly
1270
1271                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `nick`, `photo`, `network`, `rel`,
1272                         `blocked`, `readonly`, `pending` )
1273                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 1, 1 ) ",
1274                         intval($importer['uid']),
1275                         dbesc(datetime_convert()),
1276                         dbesc($url),
1277                         dbesc($name),
1278                         dbesc($nick),
1279                         dbesc($photo),
1280                         dbesc('stat'),
1281                         intval(REL_VIP)
1282                 );
1283                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 AND `rel` = %d LIMIT 1",
1284                                 intval($importer['uid']),
1285                                 dbesc($url),
1286                                 intval(REL_VIP)
1287                 );
1288                 if(count($r))
1289                                 $contact_record = $r[0];
1290
1291                 // create notification
1292                 $hash = random_string();
1293
1294                 if(is_array($contact_record)) {
1295                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
1296                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
1297                                 intval($importer['uid']),
1298                                 intval($contact_record['id']),
1299                                 dbesc($hash),
1300                                 dbesc(datetime_convert())
1301                         );
1302                 }
1303                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1304                         intval($importer['uid'])
1305                 );
1306                 $a = get_app();
1307                 if(count($r)) {
1308                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) && ($r[0]['page-flags'] == PAGE_NORMAL)) {
1309                                 $email_tpl = load_view_file('view/follow_notify_eml.tpl');
1310                                 $email = replace_macros($email_tpl, array(
1311                                         '$requestor' => ((strlen($name)) ? $name : t('[Name Withheld]')),
1312                                         '$url' => $url,
1313                                         '$myname' => $r[0]['username'],
1314                                         '$siteurl' => $a->get_baseurl(),
1315                                         '$sitename' => $a->config['sitename']
1316                                 ));
1317                                 $res = mail($r[0]['email'],
1318                                         t("You have a new follower at ") . $a->config['sitename'],
1319                                         $email,
1320                                         'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] );
1321
1322                         }
1323                 }
1324         }
1325 }
1326
1327 function lose_follower($importer,$contact,$datarray,$item) {
1328
1329         if(($contact['rel'] == REL_BUD) || ($contact['rel'] == REL_FAN)) {
1330                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
1331                         intval(REL_FAN),
1332                         intval($contact['id'])
1333                 );
1334         }
1335         else {
1336                 contact_remove($contact['id']);
1337         }
1338 }
1339
1340
1341 function subscribe_to_hub($url,$importer,$contact) {
1342
1343         if(is_array($importer)) {
1344                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
1345                         intval($importer['uid'])
1346                 );
1347         }
1348         if(! count($r))
1349                 return;
1350
1351         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
1352
1353         // Use a single verify token, even if multiple hubs
1354
1355         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
1356
1357         $params= 'hub.mode=subscribe&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
1358
1359         logger('subscribe_to_hub: subscribing ' . $contact['name'] . ' to hub ' . $url . ' with verifier ' . $verify_token);
1360
1361         if(! strlen($contact['hub-verify'])) {
1362                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d LIMIT 1",
1363                         dbesc($verify_token),
1364                         intval($contact['id'])
1365                 );
1366         }
1367
1368         post_url($url,$params);
1369         return;
1370
1371 }
1372
1373
1374 function atom_author($tag,$name,$uri,$h,$w,$photo) {
1375         $o = '';
1376         if(! $tag)
1377                 return $o;
1378         $name = xmlify($name);
1379         $uri = xmlify($uri);
1380         $h = intval($h);
1381         $w = intval($w);
1382         $photo = xmlify($photo);
1383
1384
1385         $o .= "<$tag>\r\n";
1386         $o .= "<name>$name</name>\r\n";
1387         $o .= "<uri>$uri</uri>\r\n";
1388         $o .= '<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1389         $o .= '<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1390
1391         call_hooks('atom_author', $o);
1392
1393         $o .= "</$tag>\r\n";
1394         return $o;
1395 }
1396
1397 function atom_entry($item,$type,$author,$owner,$comment = false) {
1398
1399         if($item['deleted'])
1400                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
1401
1402         $a = get_app();
1403
1404         $o = "\r\n\r\n<entry>\r\n";
1405
1406         if(is_array($author))
1407                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
1408         else
1409                 $o .= atom_author('author',$item['name'],$item['url'],80,80,$item['thumb']);
1410         if(strlen($item['owner-name']))
1411                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
1412
1413         if($item['parent'] != $item['id'])
1414                 $o .= '<thr:in-reply-to ref="' . xmlify($item['parent-uri']) . '" type="text/html" href="' .  xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1415
1416         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
1417         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
1418         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
1419         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
1420         $o .= '<dfrn:env>' . base64url_encode($item['body'], true) . '</dfrn:env>' . "\r\n";
1421         $o .= '<content type="' . $type . '" >' . xmlify(($type === 'html') ? bbcode($item['body']) : $item['body']) . '</content>' . "\r\n";
1422         $o .= '<link rel="alternate" type="text/html" href="' . xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1423         if($comment)
1424                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
1425
1426         if($item['location']) {
1427                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
1428                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
1429         }
1430
1431         if($item['coord'])
1432                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
1433
1434         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
1435                 $o .= '<dfrn:private>1</dfrn:private>' . "\r\n";
1436
1437         $verb = construct_verb($item);
1438         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
1439         $actobj = construct_activity_object($item);
1440         if(strlen($actobj))
1441                 $o .= $actobj;
1442         $actarg = construct_activity_target($item);
1443         if(strlen($actarg))
1444                 $o .= $actarg;
1445
1446         $mentioned = get_mentions($item);
1447         if($mentioned)
1448                 $o .= $mentioned;
1449
1450         call_hooks('atom_entry', $o);
1451
1452         $o .= '</entry>' . "\r\n";
1453
1454         return $o;
1455 }
1456