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