include/items.php

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