include/items.php

   1 <?php
   2
   3 require_once('bbcode.php');
   4 require_once('oembed.php');
   5 require_once('include/salmon.php');
   6
   7 function get_feed_for(&$a, $dfrn_id, $owner_nick, $last_update, $direction = 0) {
   8
   9         // default permissions - anonymous user
  10
  11         if(! strlen($owner_nick))
  12                 killme();
  13
  14         $sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid`  = '' AND `deny_gid`  = '' ";
  15
  16         $r = q("SELECT `contact`.*, `user`.`uid` AS `user_uid`, `user`.`nickname`, `user`.`timezone`
  17                 FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
  18                 WHERE `contact`.`self` = 1 AND `user`.`nickname` = '%s' LIMIT 1",
  19                 dbesc($owner_nick)
  20         );
  21
  22         if(! count($r))
  23                 killme();
  24
  25         $owner = $r[0];
  26         $owner_id = $owner['user_uid'];
  27         $owner_nick = $owner['nickname'];
  28
  29         $birthday = feed_birthday($owner_id,$owner['timezone']);
  30
  31         if(strlen($dfrn_id)) {
  32
  33                 $sql_extra = '';
  34                 switch($direction) {
  35                         case (-1):
  36                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  37                                 $my_id = $dfrn_id;
  38                                 break;
  39                         case 0:
  40                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  41                                 $my_id = '1:' . $dfrn_id;
  42                                 break;
  43                         case 1:
  44                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  45                                 $my_id = '0:' . $dfrn_id;
  46                                 break;
  47                         default:
  48                                 return false;
  49                                 break; // NOTREACHED
  50                 }
  51
  52                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
  53                         intval($owner_id)
  54                 );
  55
  56                 if(! count($r))
  57                         killme();
  58
  59                 $contact = $r[0];
  60                 $groups = init_groups_visitor($contact['id']);
  61
  62                 if(count($groups)) {
  63                         for($x = 0; $x < count($groups); $x ++)
  64                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
  65                         $gs = implode('|', $groups);
  66                 }
  67                 else
  68                         $gs = '<<>>' ; // Impossible to match
  69
  70                 $sql_extra = sprintf("
  71                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
  72                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
  73                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
  74                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
  75                 ",
  76                         intval($contact['id']),
  77                         intval($contact['id']),
  78                         dbesc($gs),
  79                         dbesc($gs)
  80                 );
  81         }
  82
  83         if($dfrn_id === '' || $dfrn_id === '*')
  84                 $sort = 'DESC';
  85         else
  86                 $sort = 'ASC';
  87
  88         if(! strlen($last_update))
  89                 $last_update = 'now -30 days';
  90
  91         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
  92
  93         $r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
  94                 `contact`.`name`, `contact`.`photo`, `contact`.`url`,
  95                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
  96                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
  97                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`
  98                 FROM `item` LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
  99                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1 AND `item`.`parent` != 0
 100                 AND `item`.`wall` = 1 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 101                 AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 102                 $sql_extra
 103                 ORDER BY `parent` %s, `created` ASC LIMIT 0, 300",
 104                 intval($owner_id),
 105                 dbesc($check_date),
 106                 dbesc($check_date),
 107                 dbesc($sort)
 108         );
 109
 110         // Will check further below if this actually returned results.
 111         // We will provide an empty feed if that is the case.
 112
 113         $items = $r;
 114
 115         $feed_template = get_markup_template('atom_feed.tpl');
 116
 117         $atom = '';
 118
 119         $hubxml = feed_hublinks();
 120
 121         $salmon = feed_salmonlinks($owner_nick);
 122
 123         $atom .= replace_macros($feed_template, array(
 124                 '$version'      => xmlify(FRIENDIKA_VERSION),
 125                 '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 126                 '$feed_title'   => xmlify($owner['name']),
 127                 '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
 128                 '$hub'          => $hubxml,
 129                 '$salmon'       => $salmon,
 130                 '$name'         => xmlify($owner['name']),
 131                 '$profile_page' => xmlify($owner['url']),
 132                 '$photo'        => xmlify($owner['photo']),
 133                 '$thumb'        => xmlify($owner['thumb']),
 134                 '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 135                 '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 136                 '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME)) ,
 137                 '$birthday'     => ((strlen($birthday)) ? '<dfrn:birthday>' . xmlify($birthday) . '</dfrn:birthday>' : '')
 138         ));
 139
 140         call_hooks('atom_feed', $atom);
 141
 142         if(! count($items)) {
 143
 144                 call_hooks('atom_feed_end', $atom);
 145
 146                 $atom .= '</feed>' . "\r\n";
 147                 return $atom;
 148         }
 149
 150         foreach($items as $item) {
 151
 152                 // public feeds get html, our own nodes use bbcode
 153
 154                 if($dfrn_id === '') {
 155                         $type = 'html';
 156                 }
 157                 else {
 158                         $type = 'text';
 159                 }
 160
 161                 $atom .= atom_entry($item,$type,null,$owner,true);
 162         }
 163
 164         call_hooks('atom_feed_end', $atom);
 165
 166         $atom .= '</feed>' . "\r\n";
 167
 168         return $atom;
 169 }
 170
 171
 172 function construct_verb($item) {
 173         if($item['verb'])
 174                 return $item['verb'];
 175         return ACTIVITY_POST;
 176 }
 177
 178 function construct_activity_object($item) {
 179
 180         if($item['object']) {
 181                 $o = '<as:object>' . "\r\n";
 182                 $r = parse_xml_string($item['object'],false);
 183
 184
 185                 if(! $r)
 186                         return '';
 187                 if($r->type)
 188                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 189                 if($r->id)
 190                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 191                 if($r->title)
 192                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 193                 if($r->link) {
 194                         if(substr($r->link,0,1) === '<') {
 195                                 // patch up some facebook "like" activity objects that got stored incorrectly
 196                                 // for a couple of months prior to 9-Jun-2011 and generated bad XML.
 197                                 // we can probably remove this hack here and in the following function in a few months time.
 198                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 199                                         $r->link = str_replace('&','&amp;', $r->link);
 200                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 201                                 $o .= $r->link;
 202                         }
 203                         else
 204                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 205                 }
 206                 if($r->content)
 207                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 208                 $o .= '</as:object>' . "\r\n";
 209                 return $o;
 210         }
 211
 212         return '';
 213 }
 214
 215 function construct_activity_target($item) {
 216
 217         if($item['target']) {
 218                 $o = '<as:target>' . "\r\n";
 219                 $r = parse_xml_string($item['target'],false);
 220                 if(! $r)
 221                         return '';
 222                 if($r->type)
 223                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 224                 if($r->id)
 225                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 226                 if($r->title)
 227                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 228                 if($r->link) {
 229                         if(substr($r->link,0,1) === '<') {
 230                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 231                                         $r->link = str_replace('&','&amp;', $r->link);
 232                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 233                                 $o .= $r->link;
 234                         }
 235                         else
 236                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 237                 }
 238                 if($r->content)
 239                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 240                 $o .= '</as:target>' . "\r\n";
 241                 return $o;
 242         }
 243
 244         return '';
 245 }
 246
 247
 248
 249
 250 function get_atom_elements($feed,$item) {
 251
 252         require_once('library/HTMLPurifier.auto.php');
 253         require_once('include/html2bbcode.php');
 254
 255         $best_photo = array();
 256
 257         $res = array();
 258
 259         $author = $item->get_author();
 260         if($author) {
 261                 $res['author-name'] = unxmlify($author->get_name());
 262                 $res['author-link'] = unxmlify($author->get_link());
 263         }
 264         else {
 265                 $res['author-name'] = unxmlify($feed->get_title());
 266                 $res['author-link'] = unxmlify($feed->get_permalink());
 267         }
 268         $res['uri'] = unxmlify($item->get_id());
 269         $res['title'] = unxmlify($item->get_title());
 270         $res['body'] = unxmlify($item->get_content());
 271         $res['plink'] = unxmlify($item->get_link(0));
 272
 273         // look for a photo. We should check media size and find the best one,
 274         // but for now let's just find any author photo
 275
 276         $rawauthor = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 277
 278         if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 279                 $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 280                 foreach($base as $link) {
 281                         if(! $res['author-avatar']) {
 282                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 283                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 284                         }
 285                 }
 286         }
 287
 288         $rawactor = $item->get_item_tags(NAMESPACE_ACTIVITY, 'actor');
 289
 290         if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 291                 $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 292                 if($base && count($base)) {
 293                         foreach($base as $link) {
 294                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 295                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 296                                 if(! $res['author-avatar']) {
 297                                         if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 298                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 299                                 }
 300                         }
 301                 }
 302         }
 303
 304         // No photo/profile-link on the item - look at the feed level
 305
 306         if((! (x($res,'author-link'))) || (! (x($res,'author-avatar')))) {
 307                 $rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 308                 if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 309                         $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 310                         foreach($base as $link) {
 311                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 312                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 313                                 if(! $res['author-avatar']) {
 314                                         if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 315                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 316                                 }
 317                         }
 318                 }
 319
 320                 $rawactor = $feed->get_feed_tags(NAMESPACE_ACTIVITY, 'subject');
 321
 322                 if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 323                         $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 324
 325                         if($base && count($base)) {
 326                                 foreach($base as $link) {
 327                                         if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 328                                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 329                                         if(! (x($res,'author-avatar'))) {
 330                                                 if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 331                                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 332                                         }
 333                                 }
 334                         }
 335                 }
 336         }
 337
 338         $apps = $item->get_item_tags(NAMESPACE_STATUSNET,'notice_info');
 339         if($apps && $apps[0]['attribs']['']['source']) {
 340                 $res['app'] = strip_tags(unxmlify($apps[0]['attribs']['']['source']));
 341                 if($res['app'] === 'web')
 342                         $res['app'] = 'OStatus';
 343         }
 344
 345         /**
 346          * If there's a copy of the body content which is guaranteed to have survived mangling in transit, use it.
 347          */
 348
 349         $have_real_body = false;
 350
 351         $rawenv = $item->get_item_tags(NAMESPACE_DFRN, 'env');
 352         if($rawenv) {
 353                 $have_real_body = true;
 354                 $res['body'] = $rawenv[0]['data'];
 355                 $res['body'] = str_replace(array(' ',"\t","\r","\n"), array('','','',''),$res['body']);
 356                 // make sure nobody is trying to sneak some html tags by us
 357                 $res['body'] = notags(base64url_decode($res['body']));
 358         }
 359
 360         $maxlen = get_max_import_size();
 361         if($maxlen && (strlen($res['body']) > $maxlen))
 362                 $res['body'] = substr($res['body'],0, $maxlen);
 363
 364         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 365         // the content type. Our own network only emits text normally, though it might have been converted to
 366         // html if we used a pubsubhubbub transport. But if we see even one html tag in our text, we will
 367         // have to assume it is all html and needs to be purified.
 368
 369         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 370         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 371         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 372         // html.
 373
 374         if((strpos($res['body'],'<') !== false) || (strpos($res['body'],'>') !== false)) {
 375
 376                 $res['body'] = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 377                         '[youtube]$1[/youtube]', $res['body']);
 378
 379                 $res['body'] = preg_replace('#<iframe[^>].+?' . 'http://www.youtube.com/embed/([A-Za-z0-9\-_=]+).+?</iframe>#s',
 380                         '[youtube]$1[/youtube]', $res['body']);
 381
 382                 $res['body'] = oembed_html2bbcode($res['body']);
 383
 384                 $config = HTMLPurifier_Config::createDefault();
 385                 $config->set('Cache.DefinitionImpl', null);
 386
 387                 // we shouldn't need a whitelist, because the bbcode converter
 388                 // will strip out any unsupported tags.
 389                 // $config->set('HTML.Allowed', 'p,b,a[href],i');
 390
 391                 $purifier = new HTMLPurifier($config);
 392                 $res['body'] = $purifier->purify($res['body']);
 393
 394                 $res['body'] = html2bbcode($res['body']);
 395         }
 396
 397         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 398         if($allow && $allow[0]['data'] == 1)
 399                 $res['last-child'] = 1;
 400         else
 401                 $res['last-child'] = 0;
 402
 403         $private = $item->get_item_tags(NAMESPACE_DFRN,'private');
 404         if($private && $private[0]['data'] == 1)
 405                 $res['private'] = 1;
 406         else
 407                 $res['private'] = 0;
 408
 409         $extid = $item->get_item_tags(NAMESPACE_DFRN,'extid');
 410         if($extid && $extid[0]['data'])
 411                 $res['extid'] = $extid[0]['data'];
 412
 413         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 414         if($rawlocation)
 415                 $res['location'] = unxmlify($rawlocation[0]['data']);
 416
 417
 418         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 419         if($rawcreated)
 420                 $res['created'] = unxmlify($rawcreated[0]['data']);
 421
 422
 423         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 424         if($rawedited)
 425                 $res['edited'] = unxmlify($rawedited[0]['data']);
 426
 427         if((x($res,'edited')) && (! (x($res,'created'))))
 428                 $res['created'] = $res['edited'];
 429
 430         if(! $res['created'])
 431                 $res['created'] = $item->get_date('c');
 432
 433         if(! $res['edited'])
 434                 $res['edited'] = $item->get_date('c');
 435
 436
 437         // Disallow time travelling posts
 438
 439         $d1 = strtotime($res['created']);
 440         $d2 = strtotime($res['edited']);
 441         $d3 = strtotime('now');
 442
 443         if($d1 > $d3)
 444                 $res['created'] = datetime_convert();
 445         if($d2 > $d3)
 446                 $res['edited'] = datetime_convert();
 447
 448         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 449         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 450                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 451         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 452                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 453         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 454                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 455         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 456                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 457
 458         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 459                 $base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 460
 461                 foreach($base as $link) {
 462                         if(! $res['owner-avatar']) {
 463                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 464                                         $res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
 465                         }
 466                 }
 467         }
 468
 469         $rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
 470         if($rawgeo)
 471                 $res['coord'] = unxmlify($rawgeo[0]['data']);
 472
 473
 474         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 475
 476         // select between supported verbs
 477
 478         if($rawverb) {
 479                 $res['verb'] = unxmlify($rawverb[0]['data']);
 480         }
 481
 482         // translate OStatus unfollow to activity streams if it happened to get selected
 483
 484         if((x($res,'verb')) && ($res['verb'] === 'http://ostatus.org/schema/1.0/unfollow'))
 485                 $res['verb'] = ACTIVITY_UNFOLLOW;
 486
 487         $cats = $item->get_categories();
 488         if($cats) {
 489                 $tag_arr = array();
 490                 foreach($cats as $cat) {
 491                         $term = $cat->get_term();
 492                         if(! $term)
 493                                 $term = $cat->get_label();
 494                         $scheme = $cat->get_scheme();
 495                         if($scheme && $term && stristr($scheme,'X-DFRN:'))
 496                                 $tag_arr[] = substr($scheme,7,1) . '[url=' . unxmlify(substr($scheme,9)) . ']' . unxmlify($term) . '[/url]';
 497                         elseif($term)
 498                                 $tag_arr[] = notags(trim($term));
 499                 }
 500                 $res['tag'] =  implode(',', $tag_arr);
 501         }
 502
 503         $attach = $item->get_enclosures();
 504         if($attach) {
 505                 $att_arr = array();
 506                 foreach($attach as $att) {
 507                         $len   = intval($att->get_length());
 508                         $link  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_link()))));
 509                         $title = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_title()))));
 510                         $type  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_type()))));
 511                         if(strpos($type,';'))
 512                                 $type = substr($type,0,strpos($type,';'));
 513                         if((! $link) || (strpos($link,'http') !== 0))
 514                                 continue;
 515
 516                         if(! $title)
 517                                 $title = ' ';
 518                         if(! $type)
 519                                 $type = 'application/octet-stream';
 520
 521                         $att_arr[] = '[attach]href="' . $link . '" length="' . $len . '" type="' . $type . '" title="' . $title . '"[/attach]';
 522                 }
 523                 $res['attach'] = implode(',', $att_arr);
 524         }
 525
 526         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 527
 528         if($rawobj) {
 529                 $res['object'] = '<object>' . "\n";
 530                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 531                         $res['object-type'] = $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 532                         $res['object'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 533                 }
 534                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 535                         $res['object'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 536                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 537                         $res['object'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 538                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 539                         $res['object'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 540                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 541                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 542                         if(! $body)
 543                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 544                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 545                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 546                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 547
 548                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 549                                         '[youtube]$1[/youtube]', $body);
 550
 551                 $res['body'] = preg_replace('#<iframe[^>].+?' . 'http://www.youtube.com/embed/([A-Za-z0-9\-_=]+).+?</iframe>#s',
 552                         '[youtube]$1[/youtube]', $res['body']);
 553
 554
 555                                 $config = HTMLPurifier_Config::createDefault();
 556                                 $config->set('Cache.DefinitionImpl', null);
 557
 558                                 $purifier = new HTMLPurifier($config);
 559                                 $body = $purifier->purify($body);
 560                                 $body = html2bbcode($body);
 561                         }
 562
 563                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 564                 }
 565
 566                 $res['object'] .= '</object>' . "\n";
 567         }
 568
 569         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'target');
 570
 571         if($rawobj) {
 572                 $res['target'] = '<target>' . "\n";
 573                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 574                         $res['target'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 575                 }
 576                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 577                         $res['target'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 578
 579                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 580                         $res['target'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 581                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 582                         $res['target'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 583                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 584                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 585                         if(! $body)
 586                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 587                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 588                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 589                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 590
 591                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 592                                         '[youtube]$1[/youtube]', $body);
 593
 594                 $res['body'] = preg_replace('#<iframe[^>].+?' . 'http://www.youtube.com/embed/([A-Za-z0-9\-_=]+).+?</iframe>#s',
 595                         '[youtube]$1[/youtube]', $res['body']);
 596
 597                                 $config = HTMLPurifier_Config::createDefault();
 598                                 $config->set('Cache.DefinitionImpl', null);
 599
 600                                 $purifier = new HTMLPurifier($config);
 601                                 $body = $purifier->purify($body);
 602                                 $body = html2bbcode($body);
 603                         }
 604
 605                         $res['target'] .= '<content>' . $body . '</content>' . "\n";
 606                 }
 607
 608                 $res['target'] .= '</target>' . "\n";
 609         }
 610
 611         $arr = array('feed' => $feed, 'item' => $item, 'result' => $res);
 612
 613         call_hooks('parse_atom', $arr);
 614
 615         return $res;
 616 }
 617
 618 function encode_rel_links($links) {
 619         $o = '';
 620         if(! ((is_array($links)) && (count($links))))
 621                 return $o;
 622         foreach($links as $link) {
 623                 $o .= '<link ';
 624                 if($link['attribs']['']['rel'])
 625                         $o .= 'rel="' . $link['attribs']['']['rel'] . '" ';
 626                 if($link['attribs']['']['type'])
 627                         $o .= 'type="' . $link['attribs']['']['type'] . '" ';
 628                 if($link['attribs']['']['href'])
 629                         $o .= 'href="' . $link['attribs']['']['href'] . '" ';
 630                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['width'])
 631                         $o .= 'media:width="' . $link['attribs'][NAMESPACE_MEDIA]['width'] . '" ';
 632                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['height'])
 633                         $o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
 634                 $o .= ' />' . "\n" ;
 635         }
 636         return xmlify($o);
 637 }
 638
 639 function item_store($arr,$force_parent = false) {
 640
 641         if($arr['gravity'])
 642                 $arr['gravity'] = intval($arr['gravity']);
 643         elseif($arr['parent-uri'] == $arr['uri'])
 644                 $arr['gravity'] = 0;
 645         elseif(activity_match($arr['verb'],ACTIVITY_POST))
 646                 $arr['gravity'] = 6;
 647         else
 648                 $arr['gravity'] = 6;   // extensible catchall
 649
 650         if(! x($arr,'type'))
 651                 $arr['type']      = 'remote';
 652
 653         // Shouldn't happen but we want to make absolutely sure it doesn't leak from a plugin.
 654
 655         if((strpos($arr['body'],'<') !== false) || (strpos($arr['body'],'>') !== false))
 656                 $arr['body'] = strip_tags($arr['body']);
 657
 658
 659         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
 660         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : random_string());
 661         $arr['extid']         = ((x($arr,'extid'))         ? notags(trim($arr['extid']))         : '');
 662         $arr['author-name']   = ((x($arr,'author-name'))   ? notags(trim($arr['author-name']))   : '');
 663         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
 664         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
 665         $arr['owner-name']    = ((x($arr,'owner-name'))    ? notags(trim($arr['owner-name']))    : '');
 666         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
 667         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
 668         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
 669         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
 670         $arr['received']      = datetime_convert();
 671         $arr['changed']       = datetime_convert();
 672         $arr['title']         = ((x($arr,'title'))         ? notags(trim($arr['title']))         : '');
 673         $arr['location']      = ((x($arr,'location'))      ? notags(trim($arr['location']))      : '');
 674         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
 675         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
 676         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
 677         $arr['deleted']       = 0;
 678         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : '');
 679         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
 680         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
 681         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
 682         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
 683         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
 684         $arr['plink']         = ((x($arr,'plink'))         ? notags(trim($arr['plink']))         : '');
 685         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
 686         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
 687         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
 688         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
 689         $arr['private']       = ((x($arr,'private'))       ? intval($arr['private'])             : 0 );
 690         $arr['body']          = ((x($arr,'body'))          ? trim($arr['body'])                  : '');
 691         $arr['tag']           = ((x($arr,'tag'))           ? notags(trim($arr['tag']))           : '');
 692         $arr['attach']        = ((x($arr,'attach'))        ? notags(trim($arr['attach']))        : '');
 693         $arr['app']           = ((x($arr,'app'))           ? notags(trim($arr['app']))           : '');
 694
 695         if($arr['parent-uri'] === $arr['uri']) {
 696                 $parent_id = 0;
 697                 $allow_cid = $arr['allow_cid'];
 698                 $allow_gid = $arr['allow_gid'];
 699                 $deny_cid  = $arr['deny_cid'];
 700                 $deny_gid  = $arr['deny_gid'];
 701         }
 702         else {
 703
 704                 // find the parent and snarf the item id and ACL's
 705                 // and anything else we need to inherit
 706
 707                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 708                         dbesc($arr['parent-uri']),
 709                         intval($arr['uid'])
 710                 );
 711
 712                 if(count($r)) {
 713
 714                         // is the new message multi-level threaded?
 715                         // even though we don't support it now, preserve the info
 716                         // and re-attach to the conversation parent.
 717
 718                         if($r[0]['uri'] != $r[0]['parent-uri']) {
 719                                 $arr['thr-parent'] = $arr['parent-uri'];
 720                                 $arr['parent-uri'] = $r[0]['parent-uri'];
 721                                 $z = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `parent-uri` = '%s' AND `uid` = %d LIMIT 1",
 722                                         dbesc($r[0]['parent-uri']),
 723                                         dbesc($r[0]['parent-uri']),
 724                                         intval($arr['uid'])
 725                                 );
 726                                 if($z && count($z))
 727                                         $r = $z;
 728                         }
 729
 730                         $parent_id      = $r[0]['id'];
 731                         $parent_deleted = $r[0]['deleted'];
 732                         $allow_cid      = $r[0]['allow_cid'];
 733                         $allow_gid      = $r[0]['allow_gid'];
 734                         $deny_cid       = $r[0]['deny_cid'];
 735                         $deny_gid       = $r[0]['deny_gid'];
 736                         $arr['wall']    = $r[0]['wall'];
 737                 }
 738                 else {
 739
 740                         // Allow one to see reply tweets from status.net even when
 741                         // we don't have or can't see the original post.
 742
 743                         if($force_parent) {
 744                                 logger('item_store: $force_parent=true, reply converted to top-level post.');
 745                                 $parent_id = 0;
 746                                 $arr['thr-parent'] = $arr['parent-uri'];
 747                                 $arr['parent-uri'] = $arr['uri'];
 748                                 $arr['gravity'] = 0;
 749                         }
 750                         else {
 751                                 logger('item_store: item parent was not found - ignoring item');
 752                                 return 0;
 753                         }
 754                 }
 755         }
 756
 757         $arr['guid'] = get_guid();
 758
 759         call_hooks('post_remote',$arr);
 760
 761         dbesc_array($arr);
 762
 763         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
 764
 765         $r = dbq("INSERT INTO `item` (`"
 766                         . implode("`, `", array_keys($arr))
 767                         . "`) VALUES ('"
 768                         . implode("', '", array_values($arr))
 769                         . "')" );
 770
 771         // find the item we just created
 772
 773         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 774                 $arr['uri'],           // already dbesc'd
 775                 intval($arr['uid'])
 776         );
 777         if(! count($r)) {
 778                 // This is not good, but perhaps we encountered a rare race/cache condition, so back off and try again.
 779                 sleep(3);
 780                 $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 781                         $arr['uri'],           // already dbesc'd
 782                         intval($arr['uid'])
 783                 );
 784         }
 785
 786         if(count($r)) {
 787                 $current_post = $r[0]['id'];
 788                 logger('item_store: created item ' . $current_post);
 789         }
 790         else {
 791                 logger('item_store: could not locate created item');
 792                 return 0;
 793         }
 794
 795         if((! $parent_id) || ($arr['parent-uri'] === $arr['uri']))
 796                 $parent_id = $current_post;
 797
 798         if(strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid))
 799                 $private = 1;
 800         else
 801                 $private = $arr['private'];
 802
 803         // Set parent id - and also make sure to inherit the parent's ACL's.
 804
 805         $r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
 806                 `deny_cid` = '%s', `deny_gid` = '%s', `private` = %d, `deleted` = %d WHERE `id` = %d LIMIT 1",
 807                 intval($parent_id),
 808                 dbesc($allow_cid),
 809                 dbesc($allow_gid),
 810                 dbesc($deny_cid),
 811                 dbesc($deny_gid),
 812                 intval($private),
 813                 intval($parent_deleted),
 814                 intval($current_post)
 815         );
 816
 817         /**
 818          * If this is now the last-child, force all _other_ children of this parent to *not* be last-child
 819          */
 820
 821         if($arr['last-child']) {
 822                 $r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d",
 823                         dbesc($arr['uri']),
 824                         intval($arr['uid']),
 825                         intval($current_post)
 826                 );
 827         }
 828
 829         return $current_post;
 830 }
 831
 832 function get_item_contact($item,$contacts) {
 833         if(! count($contacts) || (! is_array($item)))
 834                 return false;
 835         foreach($contacts as $contact) {
 836                 if($contact['id'] == $item['contact-id']) {
 837                         return $contact;
 838                         break; // NOTREACHED
 839                 }
 840         }
 841         return false;
 842 }
 843
 844
 845 function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
 846
 847         $a = get_app();
 848
 849         if((! strlen($contact['issued-id'])) && (! $contact['duplex']) && (! ($owner['page-flags'] == PAGE_COMMUNITY)))
 850                 return 3;
 851
 852         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 853
 854         if($contact['duplex'] && $contact['dfrn-id'])
 855                 $idtosend = '0:' . $orig_id;
 856         if($contact['duplex'] && $contact['issued-id'])
 857                 $idtosend = '1:' . $orig_id;
 858
 859         $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
 860
 861         $rino_enable = get_config('system','rino_encrypt');
 862
 863         if(! $rino_enable)
 864                 $rino = 0;
 865
 866         $url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino=1' : '');
 867
 868         logger('dfrn_deliver: ' . $url);
 869
 870         $xml = fetch_url($url);
 871
 872         $curl_stat = $a->get_curl_code();
 873         if(! $curl_stat)
 874                 return(-1); // timed out
 875
 876         logger('dfrn_deliver: ' . $xml);
 877
 878         if(! $xml)
 879                 return 3;
 880
 881         if(strpos($xml,'<?xml') === false) {
 882                 logger('dfrn_deliver: no valid XML returned');
 883                 logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA);
 884                 return 3;
 885         }
 886
 887         $res = parse_xml_string($xml);
 888
 889         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 890                 return (($res->status) ? $res->status : 3);
 891
 892         $postvars     = array();
 893         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 894         $challenge    = hex2bin((string) $res->challenge);
 895         $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0);
 896         $rino_allowed = ((intval($res->rino) === 1) ? 1 : 0);
 897
 898         $final_dfrn_id = '';
 899
 900
 901         if(($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 902                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 903                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 904         }
 905         else {
 906                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 907                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 908         }
 909
 910         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 911
 912         if(strpos($final_dfrn_id,':') == 1)
 913                 $final_dfrn_id = substr($final_dfrn_id,2);
 914
 915         if($final_dfrn_id != $orig_id) {
 916                 logger('dfrn_deliver: wrong dfrn_id.');
 917                 // did not decode properly - cannot trust this site
 918                 return 3;
 919         }
 920
 921         $postvars['dfrn_id']      = $idtosend;
 922         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 923         if($dissolve)
 924                 $postvars['dissolve'] = '1';
 925
 926
 927         if((($contact['rel']) && ($contact['rel'] != CONTACT_IS_SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 928                 $postvars['data'] = $atom;
 929                 $postvars['perm'] = 'rw';
 930         }
 931         else {
 932                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
 933                 $postvars['perm'] = 'r';
 934         }
 935
 936         if($rino && $rino_allowed && (! $dissolve)) {
 937                 $key = substr(random_string(),0,16);
 938                 $data = bin2hex(aes_encrypt($postvars['data'],$key));
 939                 $postvars['data'] = $data;
 940                 logger('rino: sent key = ' . $key);
 941
 942
 943                 if($dfrn_version >= 2.1) {
 944                         if(($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 945                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
 946                         }
 947                         else {
 948                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
 949                         }
 950                 }
 951                 else {
 952                         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 953                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
 954                         }
 955                         else {
 956                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
 957                         }
 958                 }
 959
 960                 logger('md5 rawkey ' . md5($postvars['key']));
 961
 962                 $postvars['key'] = bin2hex($postvars['key']);
 963         }
 964
 965         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
 966
 967         $xml = post_url($contact['notify'],$postvars);
 968
 969         logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
 970
 971         $curl_stat = $a->get_curl_code();
 972         if((! $curl_stat) || (! strlen($xml)))
 973                 return(-1); // timed out
 974
 975         if(strpos($xml,'<?xml') === false) {
 976                 logger('dfrn_deliver: phase 2: no valid XML returned');
 977                 logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA);
 978                 return 3;
 979         }
 980
 981         $res = parse_xml_string($xml);
 982
 983         return $res->status;
 984 }
 985
 986
 987 /**
 988  *
 989  * consume_feed - process atom feed and update anything/everything we might need to update
 990  *
 991  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
 992  *
 993  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
 994  *             It is this person's stuff that is going to be updated.
 995  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
 996  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
 997  *             have a contact record.
 998  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
 999  *        might not) try and subscribe to it.
1000  *
1001  */
1002
1003 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $secure_feed = false) {
1004
1005         require_once('library/simplepie/simplepie.inc');
1006
1007         if(! strlen($xml)) {
1008                 logger('consume_feed: empty input');
1009                 return;
1010         }
1011
1012         $feed = new SimplePie();
1013         $feed->set_raw_data($xml);
1014         if($datedir)
1015                 $feed->enable_order_by_date(true);
1016         else
1017                 $feed->enable_order_by_date(false);
1018         $feed->init();
1019
1020         if($feed->error())
1021                 logger('consume_feed: Error parsing XML: ' . $feed->error());
1022
1023         $permalink = $feed->get_permalink();
1024
1025         // Check at the feed level for updated contact name and/or photo
1026
1027         $name_updated  = '';
1028         $new_name = '';
1029         $photo_timestamp = '';
1030         $photo_url = '';
1031         $birthday = '';
1032
1033         $hubs = $feed->get_links('hub');
1034
1035         if(count($hubs))
1036                 $hub = implode(',', $hubs);
1037
1038         $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
1039         if($rawtags) {
1040                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
1041                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
1042                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
1043                         $new_name = $elems['name'][0]['data'];
1044                 }
1045                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
1046                         $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
1047                         $photo_url = $elems['link'][0]['attribs']['']['href'];
1048                 }
1049
1050                 if((x($rawtags[0]['child'], NAMESPACE_DFRN)) && (x($rawtags[0]['child'][NAMESPACE_DFRN],'birthday'))) {
1051                         $birthday = datetime_convert('UTC','UTC', $rawtags[0]['child'][NAMESPACE_DFRN]['birthday'][0]['data']);
1052                 }
1053         }
1054
1055         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
1056                 logger('consume_feed: Updating photo for ' . $contact['name']);
1057                 require_once("Photo.php");
1058                 $photo_failure = false;
1059                 $have_photo = false;
1060
1061                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
1062                         intval($contact['id']),
1063                         intval($contact['uid'])
1064                 );
1065                 if(count($r)) {
1066                         $resource_id = $r[0]['resource-id'];
1067                         $have_photo = true;
1068                 }
1069                 else {
1070                         $resource_id = photo_new_resource();
1071                 }
1072
1073                 $img_str = fetch_url($photo_url,true);
1074                 $img = new Photo($img_str);
1075                 if($img->is_valid()) {
1076                         if($have_photo) {
1077                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
1078                                         dbesc($resource_id),
1079                                         intval($contact['id']),
1080                                         intval($contact['uid'])
1081                                 );
1082                         }
1083
1084                         $img->scaleImageSquare(175);
1085
1086                         $hash = $resource_id;
1087                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 4);
1088
1089                         $img->scaleImage(80);
1090                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 5);
1091
1092                         $img->scaleImage(48);
1093                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 6);
1094
1095                         $a = get_app();
1096
1097                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
1098                                 WHERE `uid` = %d AND `id` = %d LIMIT 1",
1099                                 dbesc(datetime_convert()),
1100                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.jpg'),
1101                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.jpg'),
1102                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.jpg'),
1103                                 intval($contact['uid']),
1104                                 intval($contact['id'])
1105                         );
1106                 }
1107         }
1108
1109         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
1110                 q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1111                         dbesc(notags(trim($new_name))),
1112                         dbesc(datetime_convert()),
1113                         intval($contact['uid']),
1114                         intval($contact['id'])
1115                 );
1116         }
1117
1118         if(strlen($birthday)) {
1119                 if(substr($birthday,0,4) != $contact['bdyear']) {
1120                         logger('consume_feed: updating birthday: ' . $birthday);
1121
1122                         /**
1123                          *
1124                          * Add new birthday event for this person
1125                          *
1126                          * $bdtext is just a readable placeholder in case the event is shared
1127                          * with others. We will replace it during presentation to our $importer
1128                          * to contain a sparkle link and perhaps a photo.
1129                          *
1130                          */
1131
1132                         $bdtext = t('Birthday:') . ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ;
1133
1134
1135                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`desc`,`type`)
1136                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s' ) ",
1137                                 intval($contact['uid']),
1138                                 intval($contact['id']),
1139                                 dbesc(datetime_convert()),
1140                                 dbesc(datetime_convert()),
1141                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
1142                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
1143                                 dbesc($bdtext),
1144                                 dbesc('birthday')
1145                         );
1146
1147
1148                         // update bdyear
1149
1150                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1151                                 dbesc(substr($birthday,0,4)),
1152                                 intval($contact['uid']),
1153                                 intval($contact['id'])
1154                         );
1155
1156                         // This function is called twice without reloading the contact
1157                         // Make sure we only create one event. This is why &$contact
1158                         // is a reference var in this function
1159
1160                         $contact['bdyear'] = substr($birthday,0,4);
1161                 }
1162
1163         }
1164
1165
1166         // process any deleted entries
1167
1168         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
1169         if(is_array($del_entries) && count($del_entries)) {
1170                 foreach($del_entries as $dentry) {
1171                         $deleted = false;
1172                         if(isset($dentry['attribs']['']['ref'])) {
1173                                 $uri = $dentry['attribs']['']['ref'];
1174                                 $deleted = true;
1175                                 if(isset($dentry['attribs']['']['when'])) {
1176                                         $when = $dentry['attribs']['']['when'];
1177                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
1178                                 }
1179                                 else
1180                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
1181                         }
1182                         if($deleted && is_array($contact)) {
1183                                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `contact-id` = %d LIMIT 1",
1184                                         dbesc($uri),
1185                                         intval($importer['uid']),
1186                                         intval($contact['id'])
1187                                 );
1188                                 if(count($r)) {
1189                                         $item = $r[0];
1190
1191                                         if(! $item['deleted'])
1192                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
1193
1194                                         if($item['uri'] == $item['parent-uri']) {
1195                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1196                                                         `body` = '', `title` = ''
1197                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
1198                                                         dbesc($when),
1199                                                         dbesc(datetime_convert()),
1200                                                         dbesc($item['uri']),
1201                                                         intval($importer['uid'])
1202                                                 );
1203                                         }
1204                                         else {
1205                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1206                                                         `body` = '', `title` = ''
1207                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1208                                                         dbesc($when),
1209                                                         dbesc(datetime_convert()),
1210                                                         dbesc($uri),
1211                                                         intval($importer['uid'])
1212                                                 );
1213                                                 if($item['last-child']) {
1214                                                         // ensure that last-child is set in case the comment that had it just got wiped.
1215                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1216                                                                 dbesc(datetime_convert()),
1217                                                                 dbesc($item['parent-uri']),
1218                                                                 intval($item['uid'])
1219                                                         );
1220                                                         // who is the last child now?
1221                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
1222                                                                 ORDER BY `created` DESC LIMIT 1",
1223                                                                         dbesc($item['parent-uri']),
1224                                                                         intval($importer['uid'])
1225                                                         );
1226                                                         if(count($r)) {
1227                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
1228                                                                         intval($r[0]['id'])
1229                                                                 );
1230                                                         }
1231                                                 }
1232                                         }
1233                                 }
1234                         }
1235                 }
1236         }
1237
1238         // Now process the feed
1239
1240         if($feed->get_item_quantity()) {
1241
1242                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
1243
1244         // in inverse date order
1245                 if ($datedir)
1246                         $items = array_reverse($feed->get_items());
1247                 else
1248                         $items = $feed->get_items();
1249
1250
1251                 foreach($items as $item) {
1252
1253                         $is_reply = false;
1254                         $item_id = $item->get_id();
1255                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
1256                         if(isset($rawthread[0]['attribs']['']['ref'])) {
1257                                 $is_reply = true;
1258                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
1259                         }
1260
1261                         if(($is_reply) && is_array($contact)) {
1262
1263                                 // Have we seen it? If not, import it.
1264
1265                                 $item_id  = $item->get_id();
1266                                 $datarray = get_atom_elements($feed,$item);
1267
1268                                 if(! x($datarray,'author-name'))
1269                                         $datarray['author-name'] = $contact['name'];
1270                                 if(! x($datarray,'author-link'))
1271                                         $datarray['author-link'] = $contact['url'];
1272                                 if(! x($datarray,'author-avatar'))
1273                                         $datarray['author-avatar'] = $contact['thumb'];
1274
1275
1276                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1277                                         dbesc($item_id),
1278                                         intval($importer['uid'])
1279                                 );
1280
1281                                 // Update content if 'updated' changes
1282
1283                                 if(count($r)) {
1284                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
1285                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1286                                                         dbesc($datarray['body']),
1287                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
1288                                                         dbesc($item_id),
1289                                                         intval($importer['uid'])
1290                                                 );
1291                                         }
1292
1293                                         // update last-child if it changes
1294
1295                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1296                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
1297                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1298                                                         dbesc(datetime_convert()),
1299                                                         dbesc($parent_uri),
1300                                                         intval($importer['uid'])
1301                                                 );
1302                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1303                                                         intval($allow[0]['data']),
1304                                                         dbesc(datetime_convert()),
1305                                                         dbesc($item_id),
1306                                                         intval($importer['uid'])
1307                                                 );
1308                                         }
1309                                         continue;
1310                                 }
1311
1312                                 $force_parent = false;
1313                                 if($contact['network'] === 'stat') {
1314                                         $force_parent = true;
1315                                         if(strlen($datarray['title']))
1316                                                 unset($datarray['title']);
1317                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1318                                                 dbesc(datetime_convert()),
1319                                                 dbesc($parent_uri),
1320                                                 intval($importer['uid'])
1321                                         );
1322                                         $datarray['last-child'] = 1;
1323                                 }
1324
1325                                 if(($contact['network'] === 'feed') || (! strlen($contact['notify']))) {
1326                                         // one way feed - no remote comment ability
1327                                         $datarray['last-child'] = 0;
1328                                 }
1329                                 $datarray['parent-uri'] = $parent_uri;
1330                                 $datarray['uid'] = $importer['uid'];
1331                                 $datarray['contact-id'] = $contact['id'];
1332                                 if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
1333                                         $datarray['type'] = 'activity';
1334                                         $datarray['gravity'] = GRAVITY_LIKE;
1335                                 }
1336
1337                                 $r = item_store($datarray,$force_parent);
1338                                 continue;
1339                         }
1340
1341                         else {
1342
1343                                 // Head post of a conversation. Have we seen it? If not, import it.
1344
1345                                 $item_id  = $item->get_id();
1346
1347                                 $datarray = get_atom_elements($feed,$item);
1348
1349                                 if(is_array($contact)) {
1350                                         if(! x($datarray,'author-name'))
1351                                                 $datarray['author-name'] = $contact['name'];
1352                                         if(! x($datarray,'author-link'))
1353                                                 $datarray['author-link'] = $contact['url'];
1354                                         if(! x($datarray,'author-avatar'))
1355                                                 $datarray['author-avatar'] = $contact['thumb'];
1356                                 }
1357
1358                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
1359                                         $ev = bbtoevent($datarray['body']);
1360                                         if(x($ev,'desc') && x($ev,'start')) {
1361                                                 $ev['uid'] = $importer['uid'];
1362                                                 $ev['uri'] = $item_id;
1363                                                 $ev['edited'] = $datarray['edited'];
1364                                                 $ev['private'] = $datarray['private'];
1365
1366                                                 if(is_array($contact))
1367                                                         $ev['cid'] = $contact['id'];
1368                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1369                                                         dbesc($item_id),
1370                                                         intval($importer['uid'])
1371                                                 );
1372                                                 if(count($r))
1373                                                         $ev['id'] = $r[0]['id'];
1374                                                 $xyz = event_store($ev);
1375                                                 continue;
1376                                         }
1377                                 }
1378
1379                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1380                                         dbesc($item_id),
1381                                         intval($importer['uid'])
1382                                 );
1383
1384                                 // Update content if 'updated' changes
1385
1386                                 if(count($r)) {
1387                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
1388                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1389                                                         dbesc($datarray['body']),
1390                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
1391                                                         dbesc($item_id),
1392                                                         intval($importer['uid'])
1393                                                 );
1394                                         }
1395
1396                                         // update last-child if it changes
1397
1398                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1399                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
1400                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1401                                                         intval($allow[0]['data']),
1402                                                         dbesc(datetime_convert()),
1403                                                         dbesc($item_id),
1404                                                         intval($importer['uid'])
1405                                                 );
1406                                         }
1407                                         continue;
1408                                 }
1409
1410                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
1411                                         logger('consume-feed: New follower');
1412                                         new_follower($importer,$contact,$datarray,$item);
1413                                         return;
1414                                 }
1415                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
1416                                         lose_follower($importer,$contact,$datarray,$item);
1417                                         return;
1418                                 }
1419                                 if(! is_array($contact))
1420                                         return;
1421
1422                                 if($contact['network'] === 'stat' || stristr($permalink,'twitter.com')) {
1423                                         if(strlen($datarray['title']))
1424                                                 unset($datarray['title']);
1425                                         $datarray['last-child'] = 1;
1426                                 }
1427
1428                                 if(($contact['network'] === 'feed') || (! strlen($contact['notify']))) {
1429                                         // one way feed - no remote comment ability
1430                                         $datarray['last-child'] = 0;
1431                                 }
1432
1433                                 // This is my contact on another system, but it's really me.
1434                                 // Turn this into a wall post.
1435
1436                                 if($contact['remote_self'])
1437                                         $datarray['wall'] = 1;
1438
1439                                 $datarray['parent-uri'] = $item_id;
1440                                 $datarray['uid'] = $importer['uid'];
1441                                 $datarray['contact-id'] = $contact['id'];
1442                                 $r = item_store($datarray);
1443                                 continue;
1444
1445                         }
1446                 }
1447         }
1448 }
1449
1450 function new_follower($importer,$contact,$datarray,$item) {
1451         $url = notags(trim($datarray['author-link']));
1452         $name = notags(trim($datarray['author-name']));
1453         $photo = notags(trim($datarray['author-avatar']));
1454
1455         $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
1456         if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
1457                 $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
1458
1459         if(is_array($contact)) {
1460                 if($contact['network'] == 'stat' && $contact['rel'] == CONTACT_IS_SHARING) {
1461                         $r = q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d AND `uid` = %d LIMIT 1",
1462                                 intval(CONTACT_IS_FRIEND),
1463                                 intval($contact['id']),
1464                                 intval($importer['uid'])
1465                         );
1466                 }
1467
1468                 // send email notification to owner?
1469         }
1470         else {
1471
1472                 // create contact record
1473
1474                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `nick`, `photo`, `network`, `rel`,
1475                         `blocked`, `readonly`, `pending`, `writable` )
1476                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
1477                         intval($importer['uid']),
1478                         dbesc(datetime_convert()),
1479                         dbesc($url),
1480                         dbesc($name),
1481                         dbesc($nick),
1482                         dbesc($photo),
1483                         dbesc('stat'),
1484                         intval(CONTACT_IS_FOLLOWER)
1485                 );
1486                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 AND `rel` = %d LIMIT 1",
1487                                 intval($importer['uid']),
1488                                 dbesc($url),
1489                                 intval(CONTACT_IS_FOLLOWER)
1490                 );
1491                 if(count($r))
1492                                 $contact_record = $r[0];
1493
1494                 // create notification
1495                 $hash = random_string();
1496
1497                 if(is_array($contact_record)) {
1498                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
1499                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
1500                                 intval($importer['uid']),
1501                                 intval($contact_record['id']),
1502                                 dbesc($hash),
1503                                 dbesc(datetime_convert())
1504                         );
1505                 }
1506                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1507                         intval($importer['uid'])
1508                 );
1509                 $a = get_app();
1510                 if(count($r)) {
1511                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) && ($r[0]['page-flags'] == PAGE_NORMAL)) {
1512                                 $email_tpl = get_intltext_template('follow_notify_eml.tpl');
1513                                 $email = replace_macros($email_tpl, array(
1514                                         '$requestor' => ((strlen($name)) ? $name : t('[Name Withheld]')),
1515                                         '$url' => $url,
1516                                         '$myname' => $r[0]['username'],
1517                                         '$siteurl' => $a->get_baseurl(),
1518                                         '$sitename' => $a->config['sitename']
1519                                 ));
1520                                 $res = mail($r[0]['email'],
1521                                         t("You have a new follower at ") . $a->config['sitename'],
1522                                         $email,
1523                                         'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] . "\n"
1524                                         . 'Content-type: text/plain; charset=UTF-8' . "\n"
1525                                         . 'Content-transfer-encoding: 8bit' );
1526
1527                         }
1528                 }
1529         }
1530 }
1531
1532 function lose_follower($importer,$contact,$datarray,$item) {
1533
1534         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
1535                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
1536                         intval(CONTACT_IS_SHARING),
1537                         intval($contact['id'])
1538                 );
1539         }
1540         else {
1541                 contact_remove($contact['id']);
1542         }
1543 }
1544
1545
1546 function subscribe_to_hub($url,$importer,$contact) {
1547
1548         if(is_array($importer)) {
1549                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
1550                         intval($importer['uid'])
1551                 );
1552         }
1553         if(! count($r))
1554                 return;
1555
1556         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
1557
1558         // Use a single verify token, even if multiple hubs
1559
1560         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
1561
1562         $params= 'hub.mode=subscribe&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
1563
1564         logger('subscribe_to_hub: subscribing ' . $contact['name'] . ' to hub ' . $url . ' with verifier ' . $verify_token);
1565
1566         if(! strlen($contact['hub-verify'])) {
1567                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d LIMIT 1",
1568                         dbesc($verify_token),
1569                         intval($contact['id'])
1570                 );
1571         }
1572
1573         post_url($url,$params);
1574         return;
1575
1576 }
1577
1578
1579 function atom_author($tag,$name,$uri,$h,$w,$photo) {
1580         $o = '';
1581         if(! $tag)
1582                 return $o;
1583         $name = xmlify($name);
1584         $uri = xmlify($uri);
1585         $h = intval($h);
1586         $w = intval($w);
1587         $photo = xmlify($photo);
1588
1589
1590         $o .= "<$tag>\r\n";
1591         $o .= "<name>$name</name>\r\n";
1592         $o .= "<uri>$uri</uri>\r\n";
1593         $o .= '<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1594         $o .= '<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1595
1596         call_hooks('atom_author', $o);
1597
1598         $o .= "</$tag>\r\n";
1599         return $o;
1600 }
1601
1602 function atom_entry($item,$type,$author,$owner,$comment = false) {
1603
1604         $a = get_app();
1605
1606         if($item['deleted'])
1607                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
1608
1609
1610         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
1611                 $body = fix_private_photos($item['body'],$owner['uid']);
1612         else
1613                 $body = $item['body'];
1614
1615
1616         $o = "\r\n\r\n<entry>\r\n";
1617
1618         if(is_array($author))
1619                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
1620         else
1621                 $o .= atom_author('author',(($item['author-name']) ? $item['author-name'] : $item['name']),(($item['author-link']) ? $item['author-link'] : $item['url']),80,80,(($item['author-avatar']) ? $item['author-avatar'] : $item['thumb']));
1622         if(strlen($item['owner-name']))
1623                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
1624
1625         if($item['parent'] != $item['id'])
1626                 $o .= '<thr:in-reply-to ref="' . xmlify($item['parent-uri']) . '" type="text/html" href="' .  xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1627
1628         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
1629         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
1630         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
1631         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
1632         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
1633         $o .= '<content type="' . $type . '" >' . xmlify(($type === 'html') ? bbcode($body) : $body) . '</content>' . "\r\n";
1634         $o .= '<link rel="alternate" type="text/html" href="' . xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1635         if($comment)
1636                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
1637
1638         if($item['location']) {
1639                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
1640                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
1641         }
1642
1643         if($item['coord'])
1644                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
1645
1646         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
1647                 $o .= '<dfrn:private>1</dfrn:private>' . "\r\n";
1648
1649         if($item['extid'])
1650                 $o .= '<dfrn:extid>' . $item['extid'] . '</dfrn:extid>' . "\r\n";
1651
1652         if($item['app'])
1653                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . $item['app'] . '" ></statusnet:notice_info>';
1654         $verb = construct_verb($item);
1655         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
1656         $actobj = construct_activity_object($item);
1657         if(strlen($actobj))
1658                 $o .= $actobj;
1659         $actarg = construct_activity_target($item);
1660         if(strlen($actarg))
1661                 $o .= $actarg;
1662
1663         $tags = item_getfeedtags($item);
1664         if(count($tags)) {
1665                 foreach($tags as $t) {
1666                         $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
1667                 }
1668         }
1669
1670         $o .= item_getfeedattach($item);
1671
1672         $mentioned = get_mentions($item);
1673         if($mentioned)
1674                 $o .= $mentioned;
1675
1676         call_hooks('atom_entry', $o);
1677
1678         $o .= '</entry>' . "\r\n";
1679
1680         return $o;
1681 }
1682
1683 function fix_private_photos($s,$uid) {
1684         $a = get_app();
1685         logger('fix_private_photos');
1686
1687         if(preg_match("/\[img\](.*?)\[\/img\]/is",$s,$matches)) {
1688                 $image = $matches[1];
1689                 logger('fix_private_photos: found photo ' . $image);
1690                 if(stristr($image ,$a->get_baseurl() . '/photo/')) {
1691                         $i = basename($image);
1692                         $i = str_replace('.jpg','',$i);
1693                         $x = strpos($i,'-');
1694                         if($x) {
1695                                 $res = substr($i,$x+1);
1696                                 $i = substr($i,0,$x);
1697                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
1698                                         dbesc($i),
1699                                         intval($res),
1700                                         intval($uid)
1701                                 );
1702                                 if(count($r)) {
1703                                         logger('replacing photo');
1704                                         $s = str_replace($image, 'data:image/jpg;base64,' . base64_encode($r[0]['data']), $s);
1705                                 }
1706                         }
1707                         logger('fix_private_photos: replaced: ' . $s, LOGGER_DATA);
1708                 }
1709         }
1710         return($s);
1711 }
1712
1713
1714
1715 function item_getfeedtags($item) {
1716         $ret = array();
1717         $matches = false;
1718         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1719         if($cnt) {
1720                 for($x = 0; $x < count($matches); $x ++) {
1721                         if($matches[1][$x])
1722                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
1723                 }
1724         }
1725         $matches = false;
1726         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1727         if($cnt) {
1728                 for($x = 0; $x < count($matches); $x ++) {
1729                         if($matches[1][$x])
1730                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
1731                 }
1732         }
1733         return $ret;
1734 }
1735
1736 function item_getfeedattach($item) {
1737         $ret = '';
1738         $arr = explode(',',$item['attach']);
1739         if(count($arr)) {
1740                 foreach($arr as $r) {
1741                         $matches = false;
1742                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"\[\/attach\]|',$r,$matches);
1743                         if($cnt) {
1744                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
1745                                 if(intval($matches[2]))
1746                                         $ret .= 'length="' . intval($matches[2]) . '" ';
1747                                 if($matches[4] !== ' ')
1748                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
1749                                 $ret .= ' />' . "\r\n";
1750                         }
1751                 }
1752         }
1753         return $ret;
1754 }
1755
1756
1757
1758 function item_expire($uid,$days) {
1759
1760         if((! $uid) || (! $days))
1761                 return;
1762
1763         $r = q("SELECT * FROM `item`
1764                 WHERE `uid` = %d
1765                 AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY
1766                 AND `id` = `parent`
1767                 AND `deleted` = 0",
1768                 intval($uid),
1769                 intval($days)
1770         );
1771
1772         if(! count($r))
1773                 return;
1774
1775         logger('expire: # items=' . count($r) );
1776
1777         foreach($r as $item) {
1778
1779                 // Only expire posts, not photos and photo comments
1780
1781                 if(strlen($item['resource-id']))
1782                         continue;
1783
1784                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s' WHERE `id` = %d LIMIT 1",
1785                         dbesc(datetime_convert()),
1786                         dbesc(datetime_convert()),
1787                         intval($item['id'])
1788                 );
1789
1790                 // kill the kids
1791
1792                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1793                         dbesc(datetime_convert()),
1794                         dbesc(datetime_convert()),
1795                         dbesc($item['parent-uri']),
1796                         intval($item['uid'])
1797                 );
1798
1799         }
1800
1801         proc_run('php',"include/notifier.php","expire","$uid");
1802
1803 }
1804
1805
1806 function drop_items($items) {
1807         $uid = 0;
1808
1809         if(count($items)) {
1810                 foreach($items as $item) {
1811                         $owner = drop_item($item,false);
1812                         if($owner && ! $uid)
1813                                 $uid = $owner;
1814                 }
1815         }
1816
1817         // multiple threads may have been deleted, send an expire notification
1818
1819         if($uid)
1820                 proc_run('php',"include/notifier.php","expire","$uid");
1821 }
1822
1823
1824 function drop_item($id,$interactive = true) {
1825
1826         $a = get_app();
1827
1828         // locate item to be deleted
1829
1830         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
1831                 intval($id)
1832         );
1833
1834         if(! count($r)) {
1835                 if(! $interactive)
1836                         return 0;
1837                 notice( t('Item not found.') . EOL);
1838                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
1839         }
1840
1841         $item = $r[0];
1842
1843         $owner = $item['uid'];
1844
1845         // check if logged in user is either the author or owner of this item
1846
1847         if((local_user() == $item['uid']) || (remote_user() == $item['contact-id'])) {
1848
1849                 // delete the item
1850
1851                 $r = q("UPDATE `item` SET `deleted` = 1, `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d LIMIT 1",
1852                         dbesc(datetime_convert()),
1853                         dbesc(datetime_convert()),
1854                         intval($item['id'])
1855                 );
1856
1857                 // If item is a link to a photo resource, nuke all the associated photos
1858                 // (visitors will not have photo resources)
1859                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
1860                 // generate a resource-id and therefore aren't intimately linked to the item.
1861
1862                 if(strlen($item['resource-id'])) {
1863                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
1864                                 dbesc($item['resource-id']),
1865                                 intval($item['uid'])
1866                         );
1867                         // ignore the result
1868                 }
1869
1870                 // If item is a link to an event, nuke the event record.
1871
1872                 if(intval($item['event-id'])) {
1873                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d LIMIT 1",
1874                                 intval($item['event-id']),
1875                                 intval($item['uid'])
1876                         );
1877                         // ignore the result
1878                 }
1879
1880
1881                 // If it's the parent of a comment thread, kill all the kids
1882
1883                 if($item['uri'] == $item['parent-uri']) {
1884                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = ''
1885                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
1886                                 dbesc(datetime_convert()),
1887                                 dbesc(datetime_convert()),
1888                                 dbesc($item['parent-uri']),
1889                                 intval($item['uid'])
1890                         );
1891                         // ignore the result
1892                 }
1893                 else {
1894                         // ensure that last-child is set in case the comment that had it just got wiped.
1895                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1896                                 dbesc(datetime_convert()),
1897                                 dbesc($item['parent-uri']),
1898                                 intval($item['uid'])
1899                         );
1900                         // who is the last child now?
1901                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
1902                                 dbesc($item['parent-uri']),
1903                                 intval($item['uid'])
1904                         );
1905                         if(count($r)) {
1906                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
1907                                         intval($r[0]['id'])
1908                                 );
1909                         }
1910                 }
1911                 $drop_id = intval($item['id']);
1912
1913                 // send the notification upstream/downstream as the case may be
1914
1915                 if(! $interactive)
1916                         return $owner;
1917
1918                 proc_run('php',"include/notifier.php","drop","$drop_id");
1919                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
1920                 //NOTREACHED
1921         }
1922         else {
1923                 if(! $interactive)
1924                         return 0;
1925                 notice( t('Permission denied.') . EOL);
1926                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
1927                 //NOTREACHED
1928         }
1929
1930 }