include/items.php

   1 <?php
   2
   3 require_once('include/bbcode.php');
   4 require_once('include/oembed.php');
   5 require_once('include/salmon.php');
   6 require_once('include/crypto.php');
   7
   8 function get_feed_for(&$a, $dfrn_id, $owner_nick, $last_update, $direction = 0) {
   9
  10         // default permissions - anonymous user
  11
  12         if(! strlen($owner_nick))
  13                 killme();
  14
  15         $public_feed = (($dfrn_id) ? false : true);
  16         $starred = false;
  17         $converse = false;
  18
  19         if($public_feed && $a->argc > 2) {
  20                 for($x = 2; $x < $a->argc; $x++) {
  21                         if($a->argv[$x] == 'converse')
  22                                 $converse = true;
  23                 }
  24         }
  25
  26
  27         $sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid`  = '' AND `deny_gid`  = '' ";
  28
  29         $r = q("SELECT `contact`.*, `user`.`uid` AS `user_uid`, `user`.`nickname`, `user`.`timezone`
  30                 FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
  31                 WHERE `contact`.`self` = 1 AND `user`.`nickname` = '%s' LIMIT 1",
  32                 dbesc($owner_nick)
  33         );
  34
  35         if(! count($r))
  36                 killme();
  37
  38         $owner = $r[0];
  39         $owner_id = $owner['user_uid'];
  40         $owner_nick = $owner['nickname'];
  41
  42         $birthday = feed_birthday($owner_id,$owner['timezone']);
  43
  44         if(! $public_feed) {
  45
  46                 $sql_extra = '';
  47                 switch($direction) {
  48                         case (-1):
  49                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  50                                 $my_id = $dfrn_id;
  51                                 break;
  52                         case 0:
  53                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  54                                 $my_id = '1:' . $dfrn_id;
  55                                 break;
  56                         case 1:
  57                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  58                                 $my_id = '0:' . $dfrn_id;
  59                                 break;
  60                         default:
  61                                 return false;
  62                                 break; // NOTREACHED
  63                 }
  64
  65                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
  66                         intval($owner_id)
  67                 );
  68
  69                 if(! count($r))
  70                         killme();
  71
  72                 $contact = $r[0];
  73                 $groups = init_groups_visitor($contact['id']);
  74
  75                 if(count($groups)) {
  76                         for($x = 0; $x < count($groups); $x ++)
  77                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
  78                         $gs = implode('|', $groups);
  79                 }
  80                 else
  81                         $gs = '<<>>' ; // Impossible to match
  82
  83                 $sql_extra = sprintf("
  84                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
  85                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
  86                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
  87                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
  88                 ",
  89                         intval($contact['id']),
  90                         intval($contact['id']),
  91                         dbesc($gs),
  92                         dbesc($gs)
  93                 );
  94         }
  95
  96         if($public_feed)
  97                 $sort = 'DESC';
  98         else
  99                 $sort = 'ASC';
 100
 101         if(! strlen($last_update))
 102                 $last_update = 'now -30 days';
 103
 104         if($public_feed) {
 105                 if(! $converse)
 106                         $sql_extra .= " AND `contact`.`self` = 1 ";
 107         }
 108
 109         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
 110
 111         $r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
 112                 `contact`.`name`, `contact`.`photo`, `contact`.`url`,
 113                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
 114                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
 115                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`,
 116                 `sign`.`signed_text`, `sign`.`signature`, `sign`.`signer`
 117                 FROM `item` LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 118                 LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
 119                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1 AND `item`.`parent` != 0
 120                 AND `item`.`wall` = 1 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 121                 AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 122                 $sql_extra
 123                 ORDER BY `parent` %s, `created` ASC LIMIT 0, 300",
 124                 intval($owner_id),
 125                 dbesc($check_date),
 126                 dbesc($check_date),
 127                 dbesc($sort)
 128         );
 129
 130         // Will check further below if this actually returned results.
 131         // We will provide an empty feed if that is the case.
 132
 133         $items = $r;
 134
 135         $feed_template = get_markup_template(($dfrn_id) ? 'atom_feed_dfrn.tpl' : 'atom_feed.tpl');
 136
 137         $atom = '';
 138
 139         $hubxml = feed_hublinks();
 140
 141         $salmon = feed_salmonlinks($owner_nick);
 142
 143         $atom .= replace_macros($feed_template, array(
 144                 '$version'      => xmlify(FRIENDIKA_VERSION),
 145                 '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 146                 '$feed_title'   => xmlify($owner['name']),
 147                 '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
 148                 '$hub'          => $hubxml,
 149                 '$salmon'       => $salmon,
 150                 '$name'         => xmlify($owner['name']),
 151                 '$profile_page' => xmlify($owner['url']),
 152                 '$photo'        => xmlify($owner['photo']),
 153                 '$thumb'        => xmlify($owner['thumb']),
 154                 '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 155                 '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 156                 '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME)) ,
 157                 '$birthday'     => ((strlen($birthday)) ? '<dfrn:birthday>' . xmlify($birthday) . '</dfrn:birthday>' : '')
 158         ));
 159
 160         call_hooks('atom_feed', $atom);
 161
 162         if(! count($items)) {
 163
 164                 call_hooks('atom_feed_end', $atom);
 165
 166                 $atom .= '</feed>' . "\r\n";
 167                 return $atom;
 168         }
 169
 170         foreach($items as $item) {
 171
 172                 // public feeds get html, our own nodes use bbcode
 173
 174                 if($public_feed) {
 175                         $type = 'html';
 176                         // catch any email that's in a public conversation and make sure it doesn't leak
 177                         if($item['private'])
 178                                 continue;
 179                 }
 180                 else {
 181                         $type = 'text';
 182                 }
 183
 184                 $atom .= atom_entry($item,$type,null,$owner,true);
 185         }
 186
 187         call_hooks('atom_feed_end', $atom);
 188
 189         $atom .= '</feed>' . "\r\n";
 190
 191         return $atom;
 192 }
 193
 194
 195 function construct_verb($item) {
 196         if($item['verb'])
 197                 return $item['verb'];
 198         return ACTIVITY_POST;
 199 }
 200
 201 function construct_activity_object($item) {
 202
 203         if($item['object']) {
 204                 $o = '<as:object>' . "\r\n";
 205                 $r = parse_xml_string($item['object'],false);
 206
 207
 208                 if(! $r)
 209                         return '';
 210                 if($r->type)
 211                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 212                 if($r->id)
 213                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 214                 if($r->title)
 215                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 216                 if($r->link) {
 217                         if(substr($r->link,0,1) === '<') {
 218                                 // patch up some facebook "like" activity objects that got stored incorrectly
 219                                 // for a couple of months prior to 9-Jun-2011 and generated bad XML.
 220                                 // we can probably remove this hack here and in the following function in a few months time.
 221                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 222                                         $r->link = str_replace('&','&amp;', $r->link);
 223                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 224                                 $o .= $r->link;
 225                         }
 226                         else
 227                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 228                 }
 229                 if($r->content)
 230                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 231                 $o .= '</as:object>' . "\r\n";
 232                 return $o;
 233         }
 234
 235         return '';
 236 }
 237
 238 function construct_activity_target($item) {
 239
 240         if($item['target']) {
 241                 $o = '<as:target>' . "\r\n";
 242                 $r = parse_xml_string($item['target'],false);
 243                 if(! $r)
 244                         return '';
 245                 if($r->type)
 246                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 247                 if($r->id)
 248                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 249                 if($r->title)
 250                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 251                 if($r->link) {
 252                         if(substr($r->link,0,1) === '<') {
 253                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 254                                         $r->link = str_replace('&','&amp;', $r->link);
 255                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 256                                 $o .= $r->link;
 257                         }
 258                         else
 259                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 260                 }
 261                 if($r->content)
 262                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 263                 $o .= '</as:target>' . "\r\n";
 264                 return $o;
 265         }
 266
 267         return '';
 268 }
 269
 270
 271
 272
 273 function get_atom_elements($feed,$item) {
 274
 275         require_once('library/HTMLPurifier.auto.php');
 276         require_once('include/html2bbcode.php');
 277
 278         $best_photo = array();
 279
 280         $res = array();
 281
 282         $author = $item->get_author();
 283         if($author) {
 284                 $res['author-name'] = unxmlify($author->get_name());
 285                 $res['author-link'] = unxmlify($author->get_link());
 286         }
 287         else {
 288                 $res['author-name'] = unxmlify($feed->get_title());
 289                 $res['author-link'] = unxmlify($feed->get_permalink());
 290         }
 291         $res['uri'] = unxmlify($item->get_id());
 292         $res['title'] = unxmlify($item->get_title());
 293         $res['body'] = unxmlify($item->get_content());
 294         $res['plink'] = unxmlify($item->get_link(0));
 295
 296         // look for a photo. We should check media size and find the best one,
 297         // but for now let's just find any author photo
 298
 299         $rawauthor = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 300
 301         if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 302                 $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 303                 foreach($base as $link) {
 304                         if(! $res['author-avatar']) {
 305                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 306                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 307                         }
 308                 }
 309         }
 310
 311         $rawactor = $item->get_item_tags(NAMESPACE_ACTIVITY, 'actor');
 312
 313         if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 314                 $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 315                 if($base && count($base)) {
 316                         foreach($base as $link) {
 317                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 318                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 319                                 if(! $res['author-avatar']) {
 320                                         if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 321                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 322                                 }
 323                         }
 324                 }
 325         }
 326
 327         // No photo/profile-link on the item - look at the feed level
 328
 329         if((! (x($res,'author-link'))) || (! (x($res,'author-avatar')))) {
 330                 $rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 331                 if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 332                         $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 333                         foreach($base as $link) {
 334                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 335                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 336                                 if(! $res['author-avatar']) {
 337                                         if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 338                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 339                                 }
 340                         }
 341                 }
 342
 343                 $rawactor = $feed->get_feed_tags(NAMESPACE_ACTIVITY, 'subject');
 344
 345                 if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 346                         $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 347
 348                         if($base && count($base)) {
 349                                 foreach($base as $link) {
 350                                         if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 351                                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 352                                         if(! (x($res,'author-avatar'))) {
 353                                                 if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 354                                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 355                                         }
 356                                 }
 357                         }
 358                 }
 359         }
 360
 361         $apps = $item->get_item_tags(NAMESPACE_STATUSNET,'notice_info');
 362         if($apps && $apps[0]['attribs']['']['source']) {
 363                 $res['app'] = strip_tags(unxmlify($apps[0]['attribs']['']['source']));
 364                 if($res['app'] === 'web')
 365                         $res['app'] = 'OStatus';
 366         }
 367
 368         // base64 encoded json structure representing Diaspora signature
 369
 370         $dsig = $item->get_item_tags(NAMESPACE_DFRN,'diaspora_signature');
 371         if($dsig) {
 372                 $res['dsprsig'] = unxmlify($dsig[0]['data']);
 373         }
 374
 375         $dguid = $item->get_item_tags(NAMESPACE_DFRN,'diaspora_guid');
 376         if($dguid)
 377                 $res['guid'] = unxmlify($dguid[0]['data']);
 378
 379
 380         /**
 381          * If there's a copy of the body content which is guaranteed to have survived mangling in transit, use it.
 382          */
 383
 384         $have_real_body = false;
 385
 386         $rawenv = $item->get_item_tags(NAMESPACE_DFRN, 'env');
 387         if($rawenv) {
 388                 $have_real_body = true;
 389                 $res['body'] = $rawenv[0]['data'];
 390                 $res['body'] = str_replace(array(' ',"\t","\r","\n"), array('','','',''),$res['body']);
 391                 // make sure nobody is trying to sneak some html tags by us
 392                 $res['body'] = notags(base64url_decode($res['body']));
 393         }
 394
 395         $maxlen = get_max_import_size();
 396         if($maxlen && (strlen($res['body']) > $maxlen))
 397                 $res['body'] = substr($res['body'],0, $maxlen);
 398
 399         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 400         // the content type. Our own network only emits text normally, though it might have been converted to
 401         // html if we used a pubsubhubbub transport. But if we see even one html tag in our text, we will
 402         // have to assume it is all html and needs to be purified.
 403
 404         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 405         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 406         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 407         // html.
 408
 409         if((strpos($res['body'],'<') !== false) || (strpos($res['body'],'>') !== false)) {
 410
 411                 $res['body'] = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 412                         '[youtube]$1[/youtube]', $res['body']);
 413
 414                 $res['body'] = preg_replace('#<iframe[^>].+?' . 'http://www.youtube.com/embed/([A-Za-z0-9\-_=]+).+?</iframe>#s',
 415                         '[youtube]$1[/youtube]', $res['body']);
 416
 417                 $res['body'] = oembed_html2bbcode($res['body']);
 418
 419                 $config = HTMLPurifier_Config::createDefault();
 420                 $config->set('Cache.DefinitionImpl', null);
 421
 422                 // we shouldn't need a whitelist, because the bbcode converter
 423                 // will strip out any unsupported tags.
 424                 // $config->set('HTML.Allowed', 'p,b,a[href],i');
 425
 426                 $purifier = new HTMLPurifier($config);
 427                 $res['body'] = $purifier->purify($res['body']);
 428
 429                 $res['body'] = html2bbcode($res['body']);
 430         }
 431
 432         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 433         if($allow && $allow[0]['data'] == 1)
 434                 $res['last-child'] = 1;
 435         else
 436                 $res['last-child'] = 0;
 437
 438         $private = $item->get_item_tags(NAMESPACE_DFRN,'private');
 439         if($private && $private[0]['data'] == 1)
 440                 $res['private'] = 1;
 441         else
 442                 $res['private'] = 0;
 443
 444         $extid = $item->get_item_tags(NAMESPACE_DFRN,'extid');
 445         if($extid && $extid[0]['data'])
 446                 $res['extid'] = $extid[0]['data'];
 447
 448         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 449         if($rawlocation)
 450                 $res['location'] = unxmlify($rawlocation[0]['data']);
 451
 452
 453         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 454         if($rawcreated)
 455                 $res['created'] = unxmlify($rawcreated[0]['data']);
 456
 457
 458         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 459         if($rawedited)
 460                 $res['edited'] = unxmlify($rawedited[0]['data']);
 461
 462         if((x($res,'edited')) && (! (x($res,'created'))))
 463                 $res['created'] = $res['edited'];
 464
 465         if(! $res['created'])
 466                 $res['created'] = $item->get_date('c');
 467
 468         if(! $res['edited'])
 469                 $res['edited'] = $item->get_date('c');
 470
 471
 472         // Disallow time travelling posts
 473
 474         $d1 = strtotime($res['created']);
 475         $d2 = strtotime($res['edited']);
 476         $d3 = strtotime('now');
 477
 478         if($d1 > $d3)
 479                 $res['created'] = datetime_convert();
 480         if($d2 > $d3)
 481                 $res['edited'] = datetime_convert();
 482
 483         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 484         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 485                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 486         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 487                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 488         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 489                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 490         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 491                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 492
 493         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 494                 $base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 495
 496                 foreach($base as $link) {
 497                         if(! $res['owner-avatar']) {
 498                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 499                                         $res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
 500                         }
 501                 }
 502         }
 503
 504         $rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
 505         if($rawgeo)
 506                 $res['coord'] = unxmlify($rawgeo[0]['data']);
 507
 508
 509         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 510
 511         // select between supported verbs
 512
 513         if($rawverb) {
 514                 $res['verb'] = unxmlify($rawverb[0]['data']);
 515         }
 516
 517         // translate OStatus unfollow to activity streams if it happened to get selected
 518
 519         if((x($res,'verb')) && ($res['verb'] === 'http://ostatus.org/schema/1.0/unfollow'))
 520                 $res['verb'] = ACTIVITY_UNFOLLOW;
 521
 522         $cats = $item->get_categories();
 523         if($cats) {
 524                 $tag_arr = array();
 525                 foreach($cats as $cat) {
 526                         $term = $cat->get_term();
 527                         if(! $term)
 528                                 $term = $cat->get_label();
 529                         $scheme = $cat->get_scheme();
 530                         if($scheme && $term && stristr($scheme,'X-DFRN:'))
 531                                 $tag_arr[] = substr($scheme,7,1) . '[url=' . unxmlify(substr($scheme,9)) . ']' . unxmlify($term) . '[/url]';
 532                         elseif($term)
 533                                 $tag_arr[] = notags(trim($term));
 534                 }
 535                 $res['tag'] =  implode(',', $tag_arr);
 536         }
 537
 538         $attach = $item->get_enclosures();
 539         if($attach) {
 540                 $att_arr = array();
 541                 foreach($attach as $att) {
 542                         $len   = intval($att->get_length());
 543                         $link  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_link()))));
 544                         $title = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_title()))));
 545                         $type  = str_replace(array(',','"'),array('%2D','%22'),notags(trim(unxmlify($att->get_type()))));
 546                         if(strpos($type,';'))
 547                                 $type = substr($type,0,strpos($type,';'));
 548                         if((! $link) || (strpos($link,'http') !== 0))
 549                                 continue;
 550
 551                         if(! $title)
 552                                 $title = ' ';
 553                         if(! $type)
 554                                 $type = 'application/octet-stream';
 555
 556                         $att_arr[] = '[attach]href="' . $link . '" length="' . $len . '" type="' . $type . '" title="' . $title . '"[/attach]';
 557                 }
 558                 $res['attach'] = implode(',', $att_arr);
 559         }
 560
 561         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 562
 563         if($rawobj) {
 564                 $res['object'] = '<object>' . "\n";
 565                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 566                         $res['object-type'] = $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 567                         $res['object'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 568                 }
 569                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 570                         $res['object'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 571                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 572                         $res['object'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 573                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 574                         $res['object'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 575                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 576                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 577                         if(! $body)
 578                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 579                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 580                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 581                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 582
 583                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 584                                         '[youtube]$1[/youtube]', $body);
 585
 586                 $res['body'] = preg_replace('#<iframe[^>].+?' . 'http://www.youtube.com/embed/([A-Za-z0-9\-_=]+).+?</iframe>#s',
 587                         '[youtube]$1[/youtube]', $res['body']);
 588
 589
 590                                 $config = HTMLPurifier_Config::createDefault();
 591                                 $config->set('Cache.DefinitionImpl', null);
 592
 593                                 $purifier = new HTMLPurifier($config);
 594                                 $body = $purifier->purify($body);
 595                                 $body = html2bbcode($body);
 596                         }
 597
 598                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 599                 }
 600
 601                 $res['object'] .= '</object>' . "\n";
 602         }
 603
 604         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'target');
 605
 606         if($rawobj) {
 607                 $res['target'] = '<target>' . "\n";
 608                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 609                         $res['target'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 610                 }
 611                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 612                         $res['target'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 613
 614                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 615                         $res['target'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 616                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 617                         $res['target'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 618                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 619                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 620                         if(! $body)
 621                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 622                         // preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 623                         $res['object'] .= '<orig>' . xmlify($body) . '</orig>' . "\n";
 624                         if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
 625
 626                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 627                                         '[youtube]$1[/youtube]', $body);
 628
 629                 $res['body'] = preg_replace('#<iframe[^>].+?' . 'http://www.youtube.com/embed/([A-Za-z0-9\-_=]+).+?</iframe>#s',
 630                         '[youtube]$1[/youtube]', $res['body']);
 631
 632                                 $config = HTMLPurifier_Config::createDefault();
 633                                 $config->set('Cache.DefinitionImpl', null);
 634
 635                                 $purifier = new HTMLPurifier($config);
 636                                 $body = $purifier->purify($body);
 637                                 $body = html2bbcode($body);
 638                         }
 639
 640                         $res['target'] .= '<content>' . $body . '</content>' . "\n";
 641                 }
 642
 643                 $res['target'] .= '</target>' . "\n";
 644         }
 645
 646         $arr = array('feed' => $feed, 'item' => $item, 'result' => $res);
 647
 648         call_hooks('parse_atom', $arr);
 649
 650         return $res;
 651 }
 652
 653 function encode_rel_links($links) {
 654         $o = '';
 655         if(! ((is_array($links)) && (count($links))))
 656                 return $o;
 657         foreach($links as $link) {
 658                 $o .= '<link ';
 659                 if($link['attribs']['']['rel'])
 660                         $o .= 'rel="' . $link['attribs']['']['rel'] . '" ';
 661                 if($link['attribs']['']['type'])
 662                         $o .= 'type="' . $link['attribs']['']['type'] . '" ';
 663                 if($link['attribs']['']['href'])
 664                         $o .= 'href="' . $link['attribs']['']['href'] . '" ';
 665                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['width'])
 666                         $o .= 'media:width="' . $link['attribs'][NAMESPACE_MEDIA]['width'] . '" ';
 667                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['height'])
 668                         $o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
 669                 $o .= ' />' . "\n" ;
 670         }
 671         return xmlify($o);
 672 }
 673
 674 function item_store($arr,$force_parent = false) {
 675
 676         // If a Diaspora signature structure was passed in, pull it out of the
 677         // item array and set it aside for later storage.
 678
 679         $dsprsig = null;
 680         if(x($arr,'dsprsig')) {
 681                 $dsprsig = json_decode(base64_decode($arr['dsprsig']));
 682                 unset($arr['dsprsig']);
 683         }
 684
 685         if($arr['gravity'])
 686                 $arr['gravity'] = intval($arr['gravity']);
 687         elseif($arr['parent-uri'] == $arr['uri'])
 688                 $arr['gravity'] = 0;
 689         elseif(activity_match($arr['verb'],ACTIVITY_POST))
 690                 $arr['gravity'] = 6;
 691         else
 692                 $arr['gravity'] = 6;   // extensible catchall
 693
 694         if(! x($arr,'type'))
 695                 $arr['type']      = 'remote';
 696
 697         // Shouldn't happen but we want to make absolutely sure it doesn't leak from a plugin.
 698
 699         if((strpos($arr['body'],'<') !== false) || (strpos($arr['body'],'>') !== false))
 700                 $arr['body'] = strip_tags($arr['body']);
 701
 702
 703         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
 704         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : random_string());
 705         $arr['extid']         = ((x($arr,'extid'))         ? notags(trim($arr['extid']))         : '');
 706         $arr['author-name']   = ((x($arr,'author-name'))   ? notags(trim($arr['author-name']))   : '');
 707         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
 708         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
 709         $arr['owner-name']    = ((x($arr,'owner-name'))    ? notags(trim($arr['owner-name']))    : '');
 710         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
 711         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
 712         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
 713         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
 714         $arr['received']      = datetime_convert();
 715         $arr['changed']       = datetime_convert();
 716         $arr['title']         = ((x($arr,'title'))         ? notags(trim($arr['title']))         : '');
 717         $arr['location']      = ((x($arr,'location'))      ? notags(trim($arr['location']))      : '');
 718         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
 719         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
 720         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
 721         $arr['deleted']       = 0;
 722         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : '');
 723         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
 724         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
 725         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
 726         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
 727         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
 728         $arr['plink']         = ((x($arr,'plink'))         ? notags(trim($arr['plink']))         : '');
 729         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
 730         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
 731         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
 732         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
 733         $arr['private']       = ((x($arr,'private'))       ? intval($arr['private'])             : 0 );
 734         $arr['body']          = ((x($arr,'body'))          ? trim($arr['body'])                  : '');
 735         $arr['tag']           = ((x($arr,'tag'))           ? notags(trim($arr['tag']))           : '');
 736         $arr['attach']        = ((x($arr,'attach'))        ? notags(trim($arr['attach']))        : '');
 737         $arr['app']           = ((x($arr,'app'))           ? notags(trim($arr['app']))           : '');
 738         $arr['guid']          = ((x($arr,'guid'))          ? notags(trim($arr['guid']))          : get_guid());
 739
 740         if($arr['parent-uri'] === $arr['uri']) {
 741                 $parent_id = 0;
 742                 $allow_cid = $arr['allow_cid'];
 743                 $allow_gid = $arr['allow_gid'];
 744                 $deny_cid  = $arr['deny_cid'];
 745                 $deny_gid  = $arr['deny_gid'];
 746         }
 747         else {
 748
 749                 // find the parent and snarf the item id and ACL's
 750                 // and anything else we need to inherit
 751
 752                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 753                         dbesc($arr['parent-uri']),
 754                         intval($arr['uid'])
 755                 );
 756
 757                 if(count($r)) {
 758
 759                         // is the new message multi-level threaded?
 760                         // even though we don't support it now, preserve the info
 761                         // and re-attach to the conversation parent.
 762
 763                         if($r[0]['uri'] != $r[0]['parent-uri']) {
 764                                 $arr['thr-parent'] = $arr['parent-uri'];
 765                                 $arr['parent-uri'] = $r[0]['parent-uri'];
 766                                 $z = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `parent-uri` = '%s' AND `uid` = %d LIMIT 1",
 767                                         dbesc($r[0]['parent-uri']),
 768                                         dbesc($r[0]['parent-uri']),
 769                                         intval($arr['uid'])
 770                                 );
 771                                 if($z && count($z))
 772                                         $r = $z;
 773                         }
 774
 775                         $parent_id      = $r[0]['id'];
 776                         $parent_deleted = $r[0]['deleted'];
 777                         $allow_cid      = $r[0]['allow_cid'];
 778                         $allow_gid      = $r[0]['allow_gid'];
 779                         $deny_cid       = $r[0]['deny_cid'];
 780                         $deny_gid       = $r[0]['deny_gid'];
 781                         $arr['wall']    = $r[0]['wall'];
 782                 }
 783                 else {
 784
 785                         // Allow one to see reply tweets from status.net even when
 786                         // we don't have or can't see the original post.
 787
 788                         if($force_parent) {
 789                                 logger('item_store: $force_parent=true, reply converted to top-level post.');
 790                                 $parent_id = 0;
 791                                 $arr['thr-parent'] = $arr['parent-uri'];
 792                                 $arr['parent-uri'] = $arr['uri'];
 793                                 $arr['gravity'] = 0;
 794                         }
 795                         else {
 796                                 logger('item_store: item parent was not found - ignoring item');
 797                                 return 0;
 798                         }
 799                 }
 800         }
 801
 802
 803         call_hooks('post_remote',$arr);
 804
 805         dbesc_array($arr);
 806
 807         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
 808
 809         $r = dbq("INSERT INTO `item` (`"
 810                         . implode("`, `", array_keys($arr))
 811                         . "`) VALUES ('"
 812                         . implode("', '", array_values($arr))
 813                         . "')" );
 814
 815         // find the item we just created
 816
 817         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 818                 $arr['uri'],           // already dbesc'd
 819                 intval($arr['uid'])
 820         );
 821         if(! count($r)) {
 822                 // This is not good, but perhaps we encountered a rare race/cache condition, so back off and try again.
 823                 sleep(3);
 824                 $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 825                         $arr['uri'],           // already dbesc'd
 826                         intval($arr['uid'])
 827                 );
 828         }
 829
 830         if(count($r)) {
 831                 $current_post = $r[0]['id'];
 832                 logger('item_store: created item ' . $current_post);
 833         }
 834         else {
 835                 logger('item_store: could not locate created item');
 836                 return 0;
 837         }
 838
 839         if((! $parent_id) || ($arr['parent-uri'] === $arr['uri']))
 840                 $parent_id = $current_post;
 841
 842         if(strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid))
 843                 $private = 1;
 844         else
 845                 $private = $arr['private'];
 846
 847         // Set parent id - and also make sure to inherit the parent's ACL's.
 848
 849         $r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
 850                 `deny_cid` = '%s', `deny_gid` = '%s', `private` = %d, `deleted` = %d WHERE `id` = %d LIMIT 1",
 851                 intval($parent_id),
 852                 dbesc($allow_cid),
 853                 dbesc($allow_gid),
 854                 dbesc($deny_cid),
 855                 dbesc($deny_gid),
 856                 intval($private),
 857                 intval($parent_deleted),
 858                 intval($current_post)
 859         );
 860
 861         if($dsprsig) {
 862                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
 863                         intval($current_post),
 864                         dbesc($dsprsig->signed_text),
 865                         dbesc($dsprsig->signature),
 866                         dbesc($dsprsig->signer)
 867                 );
 868         }
 869
 870
 871         /**
 872          * If this is now the last-child, force all _other_ children of this parent to *not* be last-child
 873          */
 874
 875         if($arr['last-child']) {
 876                 $r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d",
 877                         dbesc($arr['uri']),
 878                         intval($arr['uid']),
 879                         intval($current_post)
 880                 );
 881         }
 882
 883         return $current_post;
 884 }
 885
 886 function get_item_contact($item,$contacts) {
 887         if(! count($contacts) || (! is_array($item)))
 888                 return false;
 889         foreach($contacts as $contact) {
 890                 if($contact['id'] == $item['contact-id']) {
 891                         return $contact;
 892                         break; // NOTREACHED
 893                 }
 894         }
 895         return false;
 896 }
 897
 898
 899 function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
 900
 901         $a = get_app();
 902
 903         if((! strlen($contact['issued-id'])) && (! $contact['duplex']) && (! ($owner['page-flags'] == PAGE_COMMUNITY)))
 904                 return 3;
 905
 906         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 907
 908         if($contact['duplex'] && $contact['dfrn-id'])
 909                 $idtosend = '0:' . $orig_id;
 910         if($contact['duplex'] && $contact['issued-id'])
 911                 $idtosend = '1:' . $orig_id;
 912
 913         $rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
 914
 915         $rino_enable = get_config('system','rino_encrypt');
 916
 917         if(! $rino_enable)
 918                 $rino = 0;
 919
 920         $url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino=1' : '');
 921
 922         logger('dfrn_deliver: ' . $url);
 923
 924         $xml = fetch_url($url);
 925
 926         $curl_stat = $a->get_curl_code();
 927         if(! $curl_stat)
 928                 return(-1); // timed out
 929
 930         logger('dfrn_deliver: ' . $xml);
 931
 932         if(! $xml)
 933                 return 3;
 934
 935         if(strpos($xml,'<?xml') === false) {
 936                 logger('dfrn_deliver: no valid XML returned');
 937                 logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA);
 938                 return 3;
 939         }
 940
 941         $res = parse_xml_string($xml);
 942
 943         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 944                 return (($res->status) ? $res->status : 3);
 945
 946         $postvars     = array();
 947         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 948         $challenge    = hex2bin((string) $res->challenge);
 949         $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0);
 950         $rino_allowed = ((intval($res->rino) === 1) ? 1 : 0);
 951
 952         $final_dfrn_id = '';
 953
 954
 955         if(($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 956                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 957                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 958         }
 959         else {
 960                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 961                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 962         }
 963
 964         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 965
 966         if(strpos($final_dfrn_id,':') == 1)
 967                 $final_dfrn_id = substr($final_dfrn_id,2);
 968
 969         if($final_dfrn_id != $orig_id) {
 970                 logger('dfrn_deliver: wrong dfrn_id.');
 971                 // did not decode properly - cannot trust this site
 972                 return 3;
 973         }
 974
 975         $postvars['dfrn_id']      = $idtosend;
 976         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 977         if($dissolve)
 978                 $postvars['dissolve'] = '1';
 979
 980
 981         if((($contact['rel']) && ($contact['rel'] != CONTACT_IS_SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 982                 $postvars['data'] = $atom;
 983                 $postvars['perm'] = 'rw';
 984         }
 985         else {
 986                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
 987                 $postvars['perm'] = 'r';
 988         }
 989
 990         if($rino && $rino_allowed && (! $dissolve)) {
 991                 $key = substr(random_string(),0,16);
 992                 $data = bin2hex(aes_encrypt($postvars['data'],$key));
 993                 $postvars['data'] = $data;
 994                 logger('rino: sent key = ' . $key);
 995
 996
 997                 if($dfrn_version >= 2.1) {
 998                         if(($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 999                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
1000                         }
1001                         else {
1002                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
1003                         }
1004                 }
1005                 else {
1006                         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
1007                                 openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
1008                         }
1009                         else {
1010                                 openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
1011                         }
1012                 }
1013
1014                 logger('md5 rawkey ' . md5($postvars['key']));
1015
1016                 $postvars['key'] = bin2hex($postvars['key']);
1017         }
1018
1019         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
1020
1021         $xml = post_url($contact['notify'],$postvars);
1022
1023         logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
1024
1025         $curl_stat = $a->get_curl_code();
1026         if((! $curl_stat) || (! strlen($xml)))
1027                 return(-1); // timed out
1028
1029         if(strpos($xml,'<?xml') === false) {
1030                 logger('dfrn_deliver: phase 2: no valid XML returned');
1031                 logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA);
1032                 return 3;
1033         }
1034
1035         $res = parse_xml_string($xml);
1036
1037         return $res->status;
1038 }
1039
1040
1041 /**
1042  *
1043  * consume_feed - process atom feed and update anything/everything we might need to update
1044  *
1045  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
1046  *
1047  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
1048  *             It is this person's stuff that is going to be updated.
1049  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
1050  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
1051  *             have a contact record.
1052  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
1053  *        might not) try and subscribe to it.
1054  *
1055  */
1056
1057 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $secure_feed = false) {
1058
1059         require_once('library/simplepie/simplepie.inc');
1060
1061         if(! strlen($xml)) {
1062                 logger('consume_feed: empty input');
1063                 return;
1064         }
1065
1066         $feed = new SimplePie();
1067         $feed->set_raw_data($xml);
1068         if($datedir)
1069                 $feed->enable_order_by_date(true);
1070         else
1071                 $feed->enable_order_by_date(false);
1072         $feed->init();
1073
1074         if($feed->error())
1075                 logger('consume_feed: Error parsing XML: ' . $feed->error());
1076
1077         $permalink = $feed->get_permalink();
1078
1079         // Check at the feed level for updated contact name and/or photo
1080
1081         $name_updated  = '';
1082         $new_name = '';
1083         $photo_timestamp = '';
1084         $photo_url = '';
1085         $birthday = '';
1086
1087         $hubs = $feed->get_links('hub');
1088
1089         if(count($hubs))
1090                 $hub = implode(',', $hubs);
1091
1092         $rawtags = $feed->get_feed_tags( NAMESPACE_DFRN, 'owner');
1093         if(! $rawtags)
1094                 $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
1095         if($rawtags) {
1096                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
1097                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
1098                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
1099                         $new_name = $elems['name'][0]['data'];
1100                 }
1101                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
1102                         $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
1103                         $photo_url = $elems['link'][0]['attribs']['']['href'];
1104                 }
1105
1106                 if((x($rawtags[0]['child'], NAMESPACE_DFRN)) && (x($rawtags[0]['child'][NAMESPACE_DFRN],'birthday'))) {
1107                         $birthday = datetime_convert('UTC','UTC', $rawtags[0]['child'][NAMESPACE_DFRN]['birthday'][0]['data']);
1108                 }
1109         }
1110
1111         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
1112                 logger('consume_feed: Updating photo for ' . $contact['name']);
1113                 require_once("Photo.php");
1114                 $photo_failure = false;
1115                 $have_photo = false;
1116
1117                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
1118                         intval($contact['id']),
1119                         intval($contact['uid'])
1120                 );
1121                 if(count($r)) {
1122                         $resource_id = $r[0]['resource-id'];
1123                         $have_photo = true;
1124                 }
1125                 else {
1126                         $resource_id = photo_new_resource();
1127                 }
1128
1129                 $img_str = fetch_url($photo_url,true);
1130                 $img = new Photo($img_str);
1131                 if($img->is_valid()) {
1132                         if($have_photo) {
1133                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
1134                                         dbesc($resource_id),
1135                                         intval($contact['id']),
1136                                         intval($contact['uid'])
1137                                 );
1138                         }
1139
1140                         $img->scaleImageSquare(175);
1141
1142                         $hash = $resource_id;
1143                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 4);
1144
1145                         $img->scaleImage(80);
1146                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 5);
1147
1148                         $img->scaleImage(48);
1149                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), 'Contact Photos', 6);
1150
1151                         $a = get_app();
1152
1153                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
1154                                 WHERE `uid` = %d AND `id` = %d LIMIT 1",
1155                                 dbesc(datetime_convert()),
1156                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.jpg'),
1157                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.jpg'),
1158                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.jpg'),
1159                                 intval($contact['uid']),
1160                                 intval($contact['id'])
1161                         );
1162                 }
1163         }
1164
1165         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
1166                 q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1167                         dbesc(notags(trim($new_name))),
1168                         dbesc(datetime_convert()),
1169                         intval($contact['uid']),
1170                         intval($contact['id'])
1171                 );
1172         }
1173
1174         if(strlen($birthday)) {
1175                 if(substr($birthday,0,4) != $contact['bdyear']) {
1176                         logger('consume_feed: updating birthday: ' . $birthday);
1177
1178                         /**
1179                          *
1180                          * Add new birthday event for this person
1181                          *
1182                          * $bdtext is just a readable placeholder in case the event is shared
1183                          * with others. We will replace it during presentation to our $importer
1184                          * to contain a sparkle link and perhaps a photo.
1185                          *
1186                          */
1187
1188                         $bdtext = t('Birthday:') . ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' ;
1189
1190
1191                         $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`desc`,`type`)
1192                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s' ) ",
1193                                 intval($contact['uid']),
1194                                 intval($contact['id']),
1195                                 dbesc(datetime_convert()),
1196                                 dbesc(datetime_convert()),
1197                                 dbesc(datetime_convert('UTC','UTC', $birthday)),
1198                                 dbesc(datetime_convert('UTC','UTC', $birthday . ' + 1 day ')),
1199                                 dbesc($bdtext),
1200                                 dbesc('birthday')
1201                         );
1202
1203
1204                         // update bdyear
1205
1206                         q("UPDATE `contact` SET `bdyear` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
1207                                 dbesc(substr($birthday,0,4)),
1208                                 intval($contact['uid']),
1209                                 intval($contact['id'])
1210                         );
1211
1212                         // This function is called twice without reloading the contact
1213                         // Make sure we only create one event. This is why &$contact
1214                         // is a reference var in this function
1215
1216                         $contact['bdyear'] = substr($birthday,0,4);
1217                 }
1218
1219         }
1220
1221
1222         // process any deleted entries
1223
1224         $del_entries = $feed->get_feed_tags(NAMESPACE_TOMB, 'deleted-entry');
1225         if(is_array($del_entries) && count($del_entries)) {
1226                 foreach($del_entries as $dentry) {
1227                         $deleted = false;
1228                         if(isset($dentry['attribs']['']['ref'])) {
1229                                 $uri = $dentry['attribs']['']['ref'];
1230                                 $deleted = true;
1231                                 if(isset($dentry['attribs']['']['when'])) {
1232                                         $when = $dentry['attribs']['']['when'];
1233                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
1234                                 }
1235                                 else
1236                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
1237                         }
1238                         if($deleted && is_array($contact)) {
1239                                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `contact-id` = %d LIMIT 1",
1240                                         dbesc($uri),
1241                                         intval($importer['uid']),
1242                                         intval($contact['id'])
1243                                 );
1244                                 if(count($r)) {
1245                                         $item = $r[0];
1246
1247                                         if(! $item['deleted'])
1248                                                 logger('consume_feed: deleting item ' . $item['id'] . ' uri=' . $item['uri'], LOGGER_DEBUG);
1249
1250                                         if($item['uri'] == $item['parent-uri']) {
1251                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1252                                                         `body` = '', `title` = ''
1253                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
1254                                                         dbesc($when),
1255                                                         dbesc(datetime_convert()),
1256                                                         dbesc($item['uri']),
1257                                                         intval($importer['uid'])
1258                                                 );
1259                                         }
1260                                         else {
1261                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
1262                                                         `body` = '', `title` = ''
1263                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1264                                                         dbesc($when),
1265                                                         dbesc(datetime_convert()),
1266                                                         dbesc($uri),
1267                                                         intval($importer['uid'])
1268                                                 );
1269                                                 if($item['last-child']) {
1270                                                         // ensure that last-child is set in case the comment that had it just got wiped.
1271                                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1272                                                                 dbesc(datetime_convert()),
1273                                                                 dbesc($item['parent-uri']),
1274                                                                 intval($item['uid'])
1275                                                         );
1276                                                         // who is the last child now?
1277                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
1278                                                                 ORDER BY `created` DESC LIMIT 1",
1279                                                                         dbesc($item['parent-uri']),
1280                                                                         intval($importer['uid'])
1281                                                         );
1282                                                         if(count($r)) {
1283                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
1284                                                                         intval($r[0]['id'])
1285                                                                 );
1286                                                         }
1287                                                 }
1288                                         }
1289                                 }
1290                         }
1291                 }
1292         }
1293
1294         // Now process the feed
1295
1296         if($feed->get_item_quantity()) {
1297
1298                 logger('consume_feed: feed item count = ' . $feed->get_item_quantity());
1299
1300         // in inverse date order
1301                 if ($datedir)
1302                         $items = array_reverse($feed->get_items());
1303                 else
1304                         $items = $feed->get_items();
1305
1306
1307                 foreach($items as $item) {
1308
1309                         $is_reply = false;
1310                         $item_id = $item->get_id();
1311                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
1312                         if(isset($rawthread[0]['attribs']['']['ref'])) {
1313                                 $is_reply = true;
1314                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
1315                         }
1316
1317                         if(($is_reply) && is_array($contact)) {
1318
1319                                 // Have we seen it? If not, import it.
1320
1321                                 $item_id  = $item->get_id();
1322                                 $datarray = get_atom_elements($feed,$item);
1323
1324                                 if(! x($datarray,'author-name'))
1325                                         $datarray['author-name'] = $contact['name'];
1326                                 if(! x($datarray,'author-link'))
1327                                         $datarray['author-link'] = $contact['url'];
1328                                 if(! x($datarray,'author-avatar'))
1329                                         $datarray['author-avatar'] = $contact['thumb'];
1330
1331
1332                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1333                                         dbesc($item_id),
1334                                         intval($importer['uid'])
1335                                 );
1336
1337                                 // Update content if 'updated' changes
1338
1339                                 if(count($r)) {
1340                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
1341                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1342                                                         dbesc($datarray['body']),
1343                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
1344                                                         dbesc($item_id),
1345                                                         intval($importer['uid'])
1346                                                 );
1347                                         }
1348
1349                                         // update last-child if it changes
1350
1351                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1352                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
1353                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1354                                                         dbesc(datetime_convert()),
1355                                                         dbesc($parent_uri),
1356                                                         intval($importer['uid'])
1357                                                 );
1358                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1359                                                         intval($allow[0]['data']),
1360                                                         dbesc(datetime_convert()),
1361                                                         dbesc($item_id),
1362                                                         intval($importer['uid'])
1363                                                 );
1364                                         }
1365                                         continue;
1366                                 }
1367
1368                                 $force_parent = false;
1369                                 if($contact['network'] === 'stat') {
1370                                         $force_parent = true;
1371                                         if(strlen($datarray['title']))
1372                                                 unset($datarray['title']);
1373                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1374                                                 dbesc(datetime_convert()),
1375                                                 dbesc($parent_uri),
1376                                                 intval($importer['uid'])
1377                                         );
1378                                         $datarray['last-child'] = 1;
1379                                 }
1380
1381                                 if(($contact['network'] === 'feed') || (! strlen($contact['notify']))) {
1382                                         // one way feed - no remote comment ability
1383                                         $datarray['last-child'] = 0;
1384                                 }
1385                                 $datarray['parent-uri'] = $parent_uri;
1386                                 $datarray['uid'] = $importer['uid'];
1387                                 $datarray['contact-id'] = $contact['id'];
1388                                 if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
1389                                         $datarray['type'] = 'activity';
1390                                         $datarray['gravity'] = GRAVITY_LIKE;
1391                                 }
1392
1393                                 $r = item_store($datarray,$force_parent);
1394                                 continue;
1395                         }
1396
1397                         else {
1398
1399                                 // Head post of a conversation. Have we seen it? If not, import it.
1400
1401                                 $item_id  = $item->get_id();
1402
1403                                 $datarray = get_atom_elements($feed,$item);
1404
1405                                 if(is_array($contact)) {
1406                                         if(! x($datarray,'author-name'))
1407                                                 $datarray['author-name'] = $contact['name'];
1408                                         if(! x($datarray,'author-link'))
1409                                                 $datarray['author-link'] = $contact['url'];
1410                                         if(! x($datarray,'author-avatar'))
1411                                                 $datarray['author-avatar'] = $contact['thumb'];
1412                                 }
1413
1414                                 if((x($datarray,'object-type')) && ($datarray['object-type'] === ACTIVITY_OBJ_EVENT)) {
1415                                         $ev = bbtoevent($datarray['body']);
1416                                         if(x($ev,'desc') && x($ev,'start')) {
1417                                                 $ev['uid'] = $importer['uid'];
1418                                                 $ev['uri'] = $item_id;
1419                                                 $ev['edited'] = $datarray['edited'];
1420                                                 $ev['private'] = $datarray['private'];
1421
1422                                                 if(is_array($contact))
1423                                                         $ev['cid'] = $contact['id'];
1424                                                 $r = q("SELECT * FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1425                                                         dbesc($item_id),
1426                                                         intval($importer['uid'])
1427                                                 );
1428                                                 if(count($r))
1429                                                         $ev['id'] = $r[0]['id'];
1430                                                 $xyz = event_store($ev);
1431                                                 continue;
1432                                         }
1433                                 }
1434
1435                                 $r = q("SELECT `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1436                                         dbesc($item_id),
1437                                         intval($importer['uid'])
1438                                 );
1439
1440                                 // Update content if 'updated' changes
1441
1442                                 if(count($r)) {
1443                                         if((x($datarray,'edited') !== false) && (datetime_convert('UTC','UTC',$datarray['edited']) !== $r[0]['edited'])) {
1444                                                 $r = q("UPDATE `item` SET `body` = '%s', `edited` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1445                                                         dbesc($datarray['body']),
1446                                                         dbesc(datetime_convert('UTC','UTC',$datarray['edited'])),
1447                                                         dbesc($item_id),
1448                                                         intval($importer['uid'])
1449                                                 );
1450                                         }
1451
1452                                         // update last-child if it changes
1453
1454                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
1455                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
1456                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1457                                                         intval($allow[0]['data']),
1458                                                         dbesc(datetime_convert()),
1459                                                         dbesc($item_id),
1460                                                         intval($importer['uid'])
1461                                                 );
1462                                         }
1463                                         continue;
1464                                 }
1465
1466                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
1467                                         logger('consume-feed: New follower');
1468                                         new_follower($importer,$contact,$datarray,$item);
1469                                         return;
1470                                 }
1471                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
1472                                         lose_follower($importer,$contact,$datarray,$item);
1473                                         return;
1474                                 }
1475                                 if(! is_array($contact))
1476                                         return;
1477
1478                                 if($contact['network'] === 'stat' || stristr($permalink,'twitter.com')) {
1479                                         if(strlen($datarray['title']))
1480                                                 unset($datarray['title']);
1481                                         $datarray['last-child'] = 1;
1482                                 }
1483
1484                                 if(($contact['network'] === 'feed') || (! strlen($contact['notify']))) {
1485                                         // one way feed - no remote comment ability
1486                                         $datarray['last-child'] = 0;
1487                                 }
1488
1489                                 // This is my contact on another system, but it's really me.
1490                                 // Turn this into a wall post.
1491
1492                                 if($contact['remote_self'])
1493                                         $datarray['wall'] = 1;
1494
1495                                 $datarray['parent-uri'] = $item_id;
1496                                 $datarray['uid'] = $importer['uid'];
1497                                 $datarray['contact-id'] = $contact['id'];
1498                                 $r = item_store($datarray);
1499                                 continue;
1500
1501                         }
1502                 }
1503         }
1504 }
1505
1506 function new_follower($importer,$contact,$datarray,$item) {
1507         $url = notags(trim($datarray['author-link']));
1508         $name = notags(trim($datarray['author-name']));
1509         $photo = notags(trim($datarray['author-avatar']));
1510
1511         $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
1512         if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
1513                 $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
1514
1515         if(is_array($contact)) {
1516                 if($contact['network'] == 'stat' && $contact['rel'] == CONTACT_IS_SHARING) {
1517                         $r = q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d AND `uid` = %d LIMIT 1",
1518                                 intval(CONTACT_IS_FRIEND),
1519                                 intval($contact['id']),
1520                                 intval($importer['uid'])
1521                         );
1522                 }
1523
1524                 // send email notification to owner?
1525         }
1526         else {
1527
1528                 // create contact record
1529
1530                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `nick`, `photo`, `network`, `rel`,
1531                         `blocked`, `readonly`, `pending`, `writable` )
1532                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1 ) ",
1533                         intval($importer['uid']),
1534                         dbesc(datetime_convert()),
1535                         dbesc($url),
1536                         dbesc($name),
1537                         dbesc($nick),
1538                         dbesc($photo),
1539                         dbesc('stat'),
1540                         intval(CONTACT_IS_FOLLOWER)
1541                 );
1542                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 AND `rel` = %d LIMIT 1",
1543                                 intval($importer['uid']),
1544                                 dbesc($url),
1545                                 intval(CONTACT_IS_FOLLOWER)
1546                 );
1547                 if(count($r))
1548                                 $contact_record = $r[0];
1549
1550                 // create notification
1551                 $hash = random_string();
1552
1553                 if(is_array($contact_record)) {
1554                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
1555                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
1556                                 intval($importer['uid']),
1557                                 intval($contact_record['id']),
1558                                 dbesc($hash),
1559                                 dbesc(datetime_convert())
1560                         );
1561                 }
1562                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1563                         intval($importer['uid'])
1564                 );
1565                 $a = get_app();
1566                 if(count($r)) {
1567                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) && ($r[0]['page-flags'] == PAGE_NORMAL)) {
1568                                 $email_tpl = get_intltext_template('follow_notify_eml.tpl');
1569                                 $email = replace_macros($email_tpl, array(
1570                                         '$requestor' => ((strlen($name)) ? $name : t('[Name Withheld]')),
1571                                         '$url' => $url,
1572                                         '$myname' => $r[0]['username'],
1573                                         '$siteurl' => $a->get_baseurl(),
1574                                         '$sitename' => $a->config['sitename']
1575                                 ));
1576                                 $res = mail($r[0]['email'],
1577                                         t("You have a new follower at ") . $a->config['sitename'],
1578                                         $email,
1579                                         'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] . "\n"
1580                                         . 'Content-type: text/plain; charset=UTF-8' . "\n"
1581                                         . 'Content-transfer-encoding: 8bit' );
1582
1583                         }
1584                 }
1585         }
1586 }
1587
1588 function lose_follower($importer,$contact,$datarray,$item) {
1589
1590         if(($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
1591                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
1592                         intval(CONTACT_IS_SHARING),
1593                         intval($contact['id'])
1594                 );
1595         }
1596         else {
1597                 contact_remove($contact['id']);
1598         }
1599 }
1600
1601
1602 function subscribe_to_hub($url,$importer,$contact) {
1603
1604         if(is_array($importer)) {
1605                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
1606                         intval($importer['uid'])
1607                 );
1608         }
1609         if((! count($r)) || $contact['network'] === NETWORK_DIASPORA)
1610                 return;
1611
1612         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
1613
1614         // Use a single verify token, even if multiple hubs
1615
1616         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
1617
1618         $params= 'hub.mode=subscribe&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
1619
1620         logger('subscribe_to_hub: subscribing ' . $contact['name'] . ' to hub ' . $url . ' with verifier ' . $verify_token);
1621
1622         if(! strlen($contact['hub-verify'])) {
1623                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d LIMIT 1",
1624                         dbesc($verify_token),
1625                         intval($contact['id'])
1626                 );
1627         }
1628
1629         post_url($url,$params);
1630         return;
1631
1632 }
1633
1634
1635 function atom_author($tag,$name,$uri,$h,$w,$photo) {
1636         $o = '';
1637         if(! $tag)
1638                 return $o;
1639         $name = xmlify($name);
1640         $uri = xmlify($uri);
1641         $h = intval($h);
1642         $w = intval($w);
1643         $photo = xmlify($photo);
1644
1645
1646         $o .= "<$tag>\r\n";
1647         $o .= "<name>$name</name>\r\n";
1648         $o .= "<uri>$uri</uri>\r\n";
1649         $o .= '<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1650         $o .= '<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1651
1652         call_hooks('atom_author', $o);
1653
1654         $o .= "</$tag>\r\n";
1655         return $o;
1656 }
1657
1658 function atom_entry($item,$type,$author,$owner,$comment = false) {
1659
1660         $a = get_app();
1661
1662         if($item['deleted'])
1663                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
1664
1665
1666         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
1667                 $body = fix_private_photos($item['body'],$owner['uid']);
1668         else
1669                 $body = $item['body'];
1670
1671
1672         $o = "\r\n\r\n<entry>\r\n";
1673
1674         if(is_array($author))
1675                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
1676         else
1677                 $o .= atom_author('author',(($item['author-name']) ? $item['author-name'] : $item['name']),(($item['author-link']) ? $item['author-link'] : $item['url']),80,80,(($item['author-avatar']) ? $item['author-avatar'] : $item['thumb']));
1678         if(strlen($item['owner-name']))
1679                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
1680
1681         if($item['parent'] != $item['id'])
1682                 $o .= '<thr:in-reply-to ref="' . xmlify($item['parent-uri']) . '" type="text/html" href="' .  xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1683
1684         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
1685         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
1686         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
1687         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
1688         $o .= '<dfrn:env>' . base64url_encode($body, true) . '</dfrn:env>' . "\r\n";
1689         $o .= '<content type="' . $type . '" >' . xmlify((($type === 'html') ? bbcode($body) : $body)) . '</content>' . "\r\n";
1690         $o .= '<link rel="alternate" type="text/html" href="' . xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1691         if($comment)
1692                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
1693
1694         if($item['location']) {
1695                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
1696                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
1697         }
1698
1699         if($item['coord'])
1700                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
1701
1702         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
1703                 $o .= '<dfrn:private>1</dfrn:private>' . "\r\n";
1704
1705         if($item['extid'])
1706                 $o .= '<dfrn:extid>' . xmlify($item['extid']) . '</dfrn:extid>' . "\r\n";
1707
1708         if($item['app'])
1709                 $o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
1710
1711         if($item['guid'])
1712                 $o .= '<dfrn:diaspora_guid>' . $item['guid'] . '</dfrn:diaspora_guid>' . "\r\n";
1713
1714         if($item['signed_text']) {
1715                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
1716                 $o .= '<dfrn:diaspora_signature>' . xmlify($sign) . '</dfrn:diaspora_signature>' . "\r\n";
1717         }
1718
1719         $verb = construct_verb($item);
1720         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
1721         $actobj = construct_activity_object($item);
1722         if(strlen($actobj))
1723                 $o .= $actobj;
1724         $actarg = construct_activity_target($item);
1725         if(strlen($actarg))
1726                 $o .= $actarg;
1727
1728         $tags = item_getfeedtags($item);
1729         if(count($tags)) {
1730                 foreach($tags as $t) {
1731                         $o .= '<category scheme="X-DFRN:' . xmlify($t[0]) . ':' . xmlify($t[1]) . '" term="' . xmlify($t[2]) . '" />' . "\r\n";
1732                 }
1733         }
1734
1735         $o .= item_getfeedattach($item);
1736
1737         $mentioned = get_mentions($item);
1738         if($mentioned)
1739                 $o .= $mentioned;
1740
1741         call_hooks('atom_entry', $o);
1742
1743         $o .= '</entry>' . "\r\n";
1744
1745         return $o;
1746 }
1747
1748 function fix_private_photos($s,$uid) {
1749         $a = get_app();
1750         logger('fix_private_photos');
1751
1752         if(preg_match("/\[img\](.*?)\[\/img\]/is",$s,$matches)) {
1753                 $image = $matches[1];
1754                 logger('fix_private_photos: found photo ' . $image);
1755                 if(stristr($image ,$a->get_baseurl() . '/photo/')) {
1756                         $i = basename($image);
1757                         $i = str_replace('.jpg','',$i);
1758                         $x = strpos($i,'-');
1759                         if($x) {
1760                                 $res = substr($i,$x+1);
1761                                 $i = substr($i,0,$x);
1762                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
1763                                         dbesc($i),
1764                                         intval($res),
1765                                         intval($uid)
1766                                 );
1767                                 if(count($r)) {
1768                                         logger('replacing photo');
1769                                         $s = str_replace($image, 'data:image/jpg;base64,' . base64_encode($r[0]['data']), $s);
1770                                 }
1771                         }
1772                         logger('fix_private_photos: replaced: ' . $s, LOGGER_DATA);
1773                 }
1774         }
1775         return($s);
1776 }
1777
1778
1779
1780 function item_getfeedtags($item) {
1781         $ret = array();
1782         $matches = false;
1783         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1784         if($cnt) {
1785                 for($x = 0; $x < count($matches); $x ++) {
1786                         if($matches[1][$x])
1787                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
1788                 }
1789         }
1790         $matches = false;
1791         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1792         if($cnt) {
1793                 for($x = 0; $x < count($matches); $x ++) {
1794                         if($matches[1][$x])
1795                                 $ret[] = array('#',$matches[1][$x], $matches[2][$x]);
1796                 }
1797         }
1798         return $ret;
1799 }
1800
1801 function item_getfeedattach($item) {
1802         $ret = '';
1803         $arr = explode(',',$item['attach']);
1804         if(count($arr)) {
1805                 foreach($arr as $r) {
1806                         $matches = false;
1807                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"\[\/attach\]|',$r,$matches);
1808                         if($cnt) {
1809                                 $ret .= '<link rel="enclosure" href="' . xmlify($matches[1]) . '" type="' . xmlify($matches[3]) . '" ';
1810                                 if(intval($matches[2]))
1811                                         $ret .= 'length="' . intval($matches[2]) . '" ';
1812                                 if($matches[4] !== ' ')
1813                                         $ret .= 'title="' . xmlify(trim($matches[4])) . '" ';
1814                                 $ret .= ' />' . "\r\n";
1815                         }
1816                 }
1817         }
1818         return $ret;
1819 }
1820
1821
1822
1823 function item_expire($uid,$days) {
1824
1825         if((! $uid) || (! $days))
1826                 return;
1827
1828         $r = q("SELECT * FROM `item`
1829                 WHERE `uid` = %d
1830                 AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY
1831                 AND `id` = `parent`
1832                 AND `deleted` = 0",
1833                 intval($uid),
1834                 intval($days)
1835         );
1836
1837         if(! count($r))
1838                 return;
1839
1840         logger('expire: # items=' . count($r) );
1841
1842         foreach($r as $item) {
1843
1844                 // Only expire posts, not photos and photo comments
1845
1846                 if(strlen($item['resource-id']))
1847                         continue;
1848
1849                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s' WHERE `id` = %d LIMIT 1",
1850                         dbesc(datetime_convert()),
1851                         dbesc(datetime_convert()),
1852                         intval($item['id'])
1853                 );
1854
1855                 // kill the kids
1856
1857                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1858                         dbesc(datetime_convert()),
1859                         dbesc(datetime_convert()),
1860                         dbesc($item['parent-uri']),
1861                         intval($item['uid'])
1862                 );
1863
1864         }
1865
1866         proc_run('php',"include/notifier.php","expire","$uid");
1867
1868 }
1869
1870
1871 function drop_items($items) {
1872         $uid = 0;
1873
1874         if(count($items)) {
1875                 foreach($items as $item) {
1876                         $owner = drop_item($item,false);
1877                         if($owner && ! $uid)
1878                                 $uid = $owner;
1879                 }
1880         }
1881
1882         // multiple threads may have been deleted, send an expire notification
1883
1884         if($uid)
1885                 proc_run('php',"include/notifier.php","expire","$uid");
1886 }
1887
1888
1889 function drop_item($id,$interactive = true) {
1890
1891         $a = get_app();
1892
1893         // locate item to be deleted
1894
1895         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
1896                 intval($id)
1897         );
1898
1899         if(! count($r)) {
1900                 if(! $interactive)
1901                         return 0;
1902                 notice( t('Item not found.') . EOL);
1903                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
1904         }
1905
1906         $item = $r[0];
1907
1908         $owner = $item['uid'];
1909
1910         // check if logged in user is either the author or owner of this item
1911
1912         if((local_user() == $item['uid']) || (remote_user() == $item['contact-id'])) {
1913
1914                 // delete the item
1915
1916                 $r = q("UPDATE `item` SET `deleted` = 1, `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d LIMIT 1",
1917                         dbesc(datetime_convert()),
1918                         dbesc(datetime_convert()),
1919                         intval($item['id'])
1920                 );
1921
1922                 // If item is a link to a photo resource, nuke all the associated photos
1923                 // (visitors will not have photo resources)
1924                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
1925                 // generate a resource-id and therefore aren't intimately linked to the item.
1926
1927                 if(strlen($item['resource-id'])) {
1928                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
1929                                 dbesc($item['resource-id']),
1930                                 intval($item['uid'])
1931                         );
1932                         // ignore the result
1933                 }
1934
1935                 // If item is a link to an event, nuke the event record.
1936
1937                 if(intval($item['event-id'])) {
1938                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d LIMIT 1",
1939                                 intval($item['event-id']),
1940                                 intval($item['uid'])
1941                         );
1942                         // ignore the result
1943                 }
1944
1945
1946                 // If it's the parent of a comment thread, kill all the kids
1947
1948                 if($item['uri'] == $item['parent-uri']) {
1949                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = ''
1950                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
1951                                 dbesc(datetime_convert()),
1952                                 dbesc(datetime_convert()),
1953                                 dbesc($item['parent-uri']),
1954                                 intval($item['uid'])
1955                         );
1956                         // ignore the result
1957                 }
1958                 else {
1959                         // ensure that last-child is set in case the comment that had it just got wiped.
1960                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
1961                                 dbesc(datetime_convert()),
1962                                 dbesc($item['parent-uri']),
1963                                 intval($item['uid'])
1964                         );
1965                         // who is the last child now?
1966                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
1967                                 dbesc($item['parent-uri']),
1968                                 intval($item['uid'])
1969                         );
1970                         if(count($r)) {
1971                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
1972                                         intval($r[0]['id'])
1973                                 );
1974                         }
1975                 }
1976                 $drop_id = intval($item['id']);
1977
1978                 // send the notification upstream/downstream as the case may be
1979
1980                 if(! $interactive)
1981                         return $owner;
1982
1983                 proc_run('php',"include/notifier.php","drop","$drop_id");
1984                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
1985                 //NOTREACHED
1986         }
1987         else {
1988                 if(! $interactive)
1989                         return 0;
1990                 notice( t('Permission denied.') . EOL);
1991                 goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
1992                 //NOTREACHED
1993         }
1994
1995 }