include/dfrn.php

   1 <?php
   2 require_once('include/items.php');
   3 require_once('include/ostatus.php');
   4
   5 /**
   6  * @brief Generates the atom entries for delivery.php
   7  *
   8  * This function is used whenever content is transmitted via DFRN.
   9  *
  10  * @param array $items Item elements
  11  * @param array $owner Owner record
  12  *
  13  * @return string DFRN entries
  14  */
  15 function dfrn_entries($items,$owner) {
  16
  17         $doc = new DOMDocument('1.0', 'utf-8');
  18         $doc->formatOutput = true;
  19
  20         $root = dfrn_add_header($doc, $owner, "dfrn:owner", "", false);
  21
  22         if(! count($items))
  23                 return trim($doc->saveXML());
  24
  25         foreach($items as $item) {
  26                 $entry = dfrn_entry($doc, "text", $item, $owner, $item["entry:comment-allow"], $item["entry:cid"]);
  27                 $root->appendChild($entry);
  28         }
  29
  30         return(trim($doc->saveXML()));
  31 }
  32
  33 /**
  34  * @brief Generate an atom feed for the given user
  35  *
  36  * This function is called when another server is pulling data from the user feed.
  37  *
  38  * @param App $a
  39  * @param string $dfrn_id
  40  * @param string $owner_nick Owner nick name
  41  * @param string $last_update Date of the last update
  42  * @param int $direction
  43  *
  44  * @return string DFRN feed entries
  45  */
  46 function dfrn_feed(&$a, $dfrn_id, $owner_nick, $last_update, $direction = 0) {
  47
  48         $sitefeed    = ((strlen($owner_nick)) ? false : true); // not yet implemented, need to rewrite huge chunks of following logic
  49         $public_feed = (($dfrn_id) ? false : true);
  50         $starred     = false;   // not yet implemented, possible security issues
  51         $converse    = false;
  52
  53         if($public_feed && $a->argc > 2) {
  54                 for($x = 2; $x < $a->argc; $x++) {
  55                         if($a->argv[$x] == 'converse')
  56                                 $converse = true;
  57                         if($a->argv[$x] == 'starred')
  58                                 $starred = true;
  59                         if($a->argv[$x] === 'category' && $a->argc > ($x + 1) && strlen($a->argv[$x+1]))
  60                                 $category = $a->argv[$x+1];
  61                 }
  62         }
  63
  64
  65
  66         // default permissions - anonymous user
  67
  68         $sql_extra = " AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = '' AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = '' ";
  69
  70         $r = q("SELECT `contact`.*, `user`.`uid` AS `user_uid`, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`
  71                 FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
  72                 WHERE `contact`.`self` = 1 AND `user`.`nickname` = '%s' LIMIT 1",
  73                 dbesc($owner_nick)
  74         );
  75
  76         if(! count($r))
  77                 killme();
  78
  79         $owner = $r[0];
  80         $owner_id = $owner['user_uid'];
  81         $owner_nick = $owner['nickname'];
  82
  83         $sql_post_table = "";
  84         $visibility = "";
  85
  86         if(! $public_feed) {
  87
  88                 $sql_extra = '';
  89                 switch($direction) {
  90                         case (-1):
  91                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  92                                 $my_id = $dfrn_id;
  93                                 break;
  94                         case 0:
  95                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  96                                 $my_id = '1:' . $dfrn_id;
  97                                 break;
  98                         case 1:
  99                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 100                                 $my_id = '0:' . $dfrn_id;
 101                                 break;
 102                         default:
 103                                 return false;
 104                                 break; // NOTREACHED
 105                 }
 106
 107                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
 108                         intval($owner_id)
 109                 );
 110
 111                 if(! count($r))
 112                         killme();
 113
 114                 $contact = $r[0];
 115                 require_once('include/security.php');
 116                 $groups = init_groups_visitor($contact['id']);
 117
 118                 if(count($groups)) {
 119                         for($x = 0; $x < count($groups); $x ++)
 120                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
 121                         $gs = implode('|', $groups);
 122                 }
 123                 else
 124                         $gs = '<<>>' ; // Impossible to match
 125
 126                 $sql_extra = sprintf("
 127                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
 128                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
 129                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
 130                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
 131                 ",
 132                         intval($contact['id']),
 133                         intval($contact['id']),
 134                         dbesc($gs),
 135                         dbesc($gs)
 136                 );
 137         }
 138
 139         if($public_feed)
 140                 $sort = 'DESC';
 141         else
 142                 $sort = 'ASC';
 143
 144         $date_field = "`changed`";
 145         $sql_order = "`item`.`parent` ".$sort.", `item`.`created` ASC";
 146
 147         if(! strlen($last_update))
 148                 $last_update = 'now -30 days';
 149
 150         if(isset($category)) {
 151                 $sql_post_table = sprintf("INNER JOIN (SELECT `oid` FROM `term` WHERE `term` = '%s' AND `otype` = %d AND `type` = %d AND `uid` = %d ORDER BY `tid` DESC) AS `term` ON `item`.`id` = `term`.`oid` ",
 152                                 dbesc(protect_sprintf($category)), intval(TERM_OBJ_POST), intval(TERM_CATEGORY), intval($owner_id));
 153                 //$sql_extra .= file_tag_file_query('item',$category,'category');
 154         }
 155
 156         if($public_feed) {
 157                 if(! $converse)
 158                         $sql_extra .= " AND `contact`.`self` = 1 ";
 159         }
 160
 161         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
 162
 163         //      AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 164         //      dbesc($check_date),
 165
 166         $r = q("SELECT STRAIGHT_JOIN `item`.*, `item`.`id` AS `item_id`,
 167                 `contact`.`name`, `contact`.`network`, `contact`.`photo`, `contact`.`url`,
 168                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
 169                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
 170                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`,
 171                 `sign`.`signed_text`, `sign`.`signature`, `sign`.`signer`
 172                 FROM `item` $sql_post_table
 173                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 174                 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 175                 LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
 176                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1 and `item`.`moderated` = 0 AND `item`.`parent` != 0
 177                 AND ((`item`.`wall` = 1) $visibility) AND `item`.$date_field > '%s'
 178                 $sql_extra
 179                 ORDER BY $sql_order LIMIT 0, 300",
 180                 intval($owner_id),
 181                 dbesc($check_date),
 182                 dbesc($sort)
 183         );
 184
 185         // Will check further below if this actually returned results.
 186         // We will provide an empty feed if that is the case.
 187
 188         $items = $r;
 189
 190         $doc = new DOMDocument('1.0', 'utf-8');
 191         $doc->formatOutput = true;
 192
 193         $alternatelink = $owner['url'];
 194
 195         if(isset($category))
 196                 $alternatelink .= "/category/".$category;
 197
 198         if ($public_feed)
 199                 $author = "dfrn:owner";
 200         else
 201                 $author = "author";
 202
 203         $root = dfrn_add_header($doc, $owner, $author, $alternatelink, true);
 204
 205         // This hook can't work anymore
 206         //      call_hooks('atom_feed', $atom);
 207
 208         if(! count($items)) {
 209                 $atom = trim($doc->saveXML());
 210
 211                 call_hooks('atom_feed_end', $atom);
 212
 213                 return $atom;
 214         }
 215
 216         foreach($items as $item) {
 217
 218                 // prevent private email from leaking.
 219                 if($item['network'] === NETWORK_MAIL)
 220                         continue;
 221
 222                 // public feeds get html, our own nodes use bbcode
 223
 224                 if($public_feed) {
 225                         $type = 'html';
 226                         // catch any email that's in a public conversation and make sure it doesn't leak
 227                         if($item['private'])
 228                                 continue;
 229                 }
 230                 else {
 231                         $type = 'text';
 232                 }
 233
 234                 $entry = dfrn_entry($doc, $type, $item, $owner, true);
 235                 $root->appendChild($entry);
 236
 237         }
 238
 239         $atom = trim($doc->saveXML());
 240
 241         call_hooks('atom_feed_end', $atom);
 242
 243         return $atom;
 244 }
 245
 246 /**
 247  * @brief Create XML text for DFRN mails
 248  *
 249  * @param array $item message elements
 250  * @param array $owner Owner record
 251  *
 252  * @return string DFRN mail
 253  */
 254 function dfrn_mail($item, $owner) {
 255         $doc = new DOMDocument('1.0', 'utf-8');
 256         $doc->formatOutput = true;
 257
 258         $root = dfrn_add_header($doc, $owner, "dfrn:owner", "", false);
 259
 260         $mail = $doc->createElement("dfrn:mail");
 261         $sender = $doc->createElement("dfrn:sender");
 262
 263         xml_add_element($doc, $sender, "dfrn:name", $owner['name']);
 264         xml_add_element($doc, $sender, "dfrn:uri", $owner['url']);
 265         xml_add_element($doc, $sender, "dfrn:avatar", $owner['thumb']);
 266
 267         $mail->appendChild($sender);
 268
 269         xml_add_element($doc, $mail, "dfrn:id", $item['uri']);
 270         xml_add_element($doc, $mail, "dfrn:in-reply-to", $item['parent-uri']);
 271         xml_add_element($doc, $mail, "dfrn:sentdate", datetime_convert('UTC', 'UTC', $item['created'] . '+00:00' , ATOM_TIME));
 272         xml_add_element($doc, $mail, "dfrn:subject", $item['title']);
 273         xml_add_element($doc, $mail, "dfrn:content", $item['body']);
 274
 275         $root->appendChild($mail);
 276
 277         return(trim($doc->saveXML()));
 278 }
 279
 280 /**
 281  * @brief Create XML text for DFRN friend suggestions
 282  *
 283  * @param array $item suggestion elements
 284  * @param array $owner Owner record
 285  *
 286  * @return string DFRN suggestions
 287  */
 288 function dfrn_fsuggest($item, $owner) {
 289         $doc = new DOMDocument('1.0', 'utf-8');
 290         $doc->formatOutput = true;
 291
 292         $root = dfrn_add_header($doc, $owner, "dfrn:owner", "", false);
 293
 294         $suggest = $doc->createElement("dfrn:suggest");
 295
 296         xml_add_element($doc, $suggest, "dfrn:url", $item['url']);
 297         xml_add_element($doc, $suggest, "dfrn:name", $item['name']);
 298         xml_add_element($doc, $suggest, "dfrn:photo", $item['photo']);
 299         xml_add_element($doc, $suggest, "dfrn:request", $item['request']);
 300         xml_add_element($doc, $suggest, "dfrn:note", $item['note']);
 301
 302         $root->appendChild($suggest);
 303
 304         return(trim($doc->saveXML()));
 305 }
 306
 307 /**
 308  * @brief Create XML text for DFRN relocations
 309  *
 310  * @param array $owner Owner record
 311  * @param int $uid User ID
 312  *
 313  * @return string DFRN relocations
 314  */
 315 function dfrn_relocate($owner, $uid) {
 316
 317         $a = get_app();
 318
 319         /* get site pubkey. this could be a new installation with no site keys*/
 320         $pubkey = get_config('system','site_pubkey');
 321         if(! $pubkey) {
 322                 $res = new_keypair(1024);
 323                 set_config('system','site_prvkey', $res['prvkey']);
 324                 set_config('system','site_pubkey', $res['pubkey']);
 325         }
 326
 327         $rp = q("SELECT `resource-id` , `scale`, type FROM `photo`
 328                         WHERE `profile` = 1 AND `uid` = %d ORDER BY scale;", $uid);
 329         $photos = array();
 330         $ext = Photo::supportedTypes();
 331         foreach($rp as $p){
 332                 $photos[$p['scale']] = $a->get_baseurl().'/photo/'.$p['resource-id'].'-'.$p['scale'].'.'.$ext[$p['type']];
 333         }
 334         unset($rp, $ext);
 335
 336         $doc = new DOMDocument('1.0', 'utf-8');
 337         $doc->formatOutput = true;
 338
 339         $root = dfrn_add_header($doc, $owner, "dfrn:owner", "", false);
 340
 341         $relocate = $doc->createElement("dfrn:relocate");
 342
 343         xml_add_element($doc, $relocate, "dfrn:url", $owner['url']);
 344         xml_add_element($doc, $relocate, "dfrn:name", $owner['name']);
 345         xml_add_element($doc, $relocate, "dfrn:photo", $photos[4]);
 346         xml_add_element($doc, $relocate, "dfrn:thumb", $photos[5]);
 347         xml_add_element($doc, $relocate, "dfrn:micro", $photos[6]);
 348         xml_add_element($doc, $relocate, "dfrn:request", $owner['request']);
 349         xml_add_element($doc, $relocate, "dfrn:confirm", $owner['confirm']);
 350         xml_add_element($doc, $relocate, "dfrn:notify", $owner['notify']);
 351         xml_add_element($doc, $relocate, "dfrn:poll", $owner['poll']);
 352         xml_add_element($doc, $relocate, "dfrn:sitepubkey", get_config('system','site_pubkey'));
 353
 354         $root->appendChild($relocate);
 355
 356         return(trim($doc->saveXML()));
 357 }
 358
 359 /**
 360  * @brief Adds the header elements for the DFRN protocol
 361  *
 362  * @param object $doc XML document
 363  * @param array $owner Owner record
 364  * @param string $authorelement Element name for the author
 365  * @param string $alternatelink link to profile or category
 366  * @param bool $public Is it a header for public posts?
 367  *
 368  * @return object XML root object
 369  */
 370 function dfrn_add_header($doc, $owner, $authorelement, $alternatelink = "", $public = false) {
 371         $a = get_app();
 372
 373         if ($alternatelink == "")
 374                 $alternatelink = $owner['url'];
 375
 376         $root = $doc->createElementNS(NS_ATOM, 'feed');
 377         $doc->appendChild($root);
 378
 379         $root->setAttribute("xmlns:thr", NS_THR);
 380         $root->setAttribute("xmlns:at", "http://purl.org/atompub/tombstones/1.0");
 381         $root->setAttribute("xmlns:media", NS_MEDIA);
 382         $root->setAttribute("xmlns:dfrn", "http://purl.org/macgirvin/dfrn/1.0");
 383         $root->setAttribute("xmlns:activity", NS_ACTIVITY);
 384         $root->setAttribute("xmlns:georss", NS_GEORSS);
 385         $root->setAttribute("xmlns:poco", NS_POCO);
 386         $root->setAttribute("xmlns:ostatus", NS_OSTATUS);
 387         $root->setAttribute("xmlns:statusnet", NS_STATUSNET);
 388
 389         xml_add_element($doc, $root, "id", $a->get_baseurl()."/profile/".$owner["nick"]);
 390         xml_add_element($doc, $root, "title", $owner["name"]);
 391
 392         $attributes = array("uri" => "https://friendi.ca", "version" => FRIENDICA_VERSION."-".DB_UPDATE_VERSION);
 393         xml_add_element($doc, $root, "generator", FRIENDICA_PLATFORM, $attributes);
 394
 395         $attributes = array("rel" => "license", "href" => "http://creativecommons.org/licenses/by/3.0/");
 396         xml_add_element($doc, $root, "link", "", $attributes);
 397
 398         $attributes = array("rel" => "alternate", "type" => "text/html", "href" => $alternatelink);
 399         xml_add_element($doc, $root, "link", "", $attributes);
 400
 401         ostatus_hublinks($doc, $root);
 402
 403         if ($public) {
 404                 $attributes = array("rel" => "salmon", "href" => $a->get_baseurl()."/salmon/".$owner["nick"]);
 405                 xml_add_element($doc, $root, "link", "", $attributes);
 406
 407                 $attributes = array("rel" => "http://salmon-protocol.org/ns/salmon-replies", "href" => $a->get_baseurl()."/salmon/".$owner["nick"]);
 408                 xml_add_element($doc, $root, "link", "", $attributes);
 409
 410                 $attributes = array("rel" => "http://salmon-protocol.org/ns/salmon-mention", "href" => $a->get_baseurl()."/salmon/".$owner["nick"]);
 411                 xml_add_element($doc, $root, "link", "", $attributes);
 412         }
 413
 414         if ($owner['page-flags'] == PAGE_COMMUNITY)
 415                 xml_add_element($doc, $root, "dfrn:community", 1);
 416
 417         xml_add_element($doc, $root, "updated", datetime_convert("UTC", "UTC", "now", ATOM_TIME));
 418
 419         $author = dfrn_add_author($doc, $owner, $authorelement);
 420         $root->appendChild($author);
 421
 422         return $root;
 423 }
 424
 425 /**
 426  * @brief Adds the author element in the header for the DFRN protocol
 427  *
 428  * @param object $doc XML document
 429  * @param array $owner Owner record
 430  * @param string $authorelement Element name for the author
 431  *
 432  * @return object XML author object
 433  */
 434 function dfrn_add_author($doc, $owner, $authorelement) {
 435         $a = get_app();
 436
 437         $author = $doc->createElement($authorelement);
 438
 439         $namdate = datetime_convert('UTC', 'UTC', $owner['name-date'].'+00:00' , ATOM_TIME);
 440         $uridate = datetime_convert('UTC', 'UTC', $owner['uri-date'].'+00:00', ATOM_TIME);
 441         $picdate = datetime_convert('UTC', 'UTC', $owner['avatar-date'].'+00:00', ATOM_TIME);
 442
 443         $attributes = array("dfrn:updated" => $namdate);
 444         xml_add_element($doc, $author, "name", $owner["name"], $attributes);
 445
 446         $attributes = array("dfrn:updated" => $namdate);
 447         xml_add_element($doc, $author, "uri", $a->get_baseurl().'/profile/'.$owner["nickname"], $attributes);
 448
 449         $attributes = array("rel" => "photo", "type" => "image/jpeg", "dfrn:updated" => $picdate,
 450                                 "media:width" => 175, "media:height" => 175, "href" => $owner['photo']);
 451         xml_add_element($doc, $author, "link", "", $attributes);
 452
 453         $attributes = array("rel" => "avatar", "type" => "image/jpeg", "dfrn:updated" => $picdate,
 454                                 "media:width" => 175, "media:height" => 175, "href" => $owner['photo']);
 455         xml_add_element($doc, $author, "link", "", $attributes);
 456
 457         $birthday = feed_birthday($owner['user_uid'], $owner['timezone']);
 458
 459         if ($birthday)
 460                 xml_add_element($doc, $author, "dfrn:birthday", $birthday);
 461
 462         return $author;
 463 }
 464
 465 /**
 466  * @brief Adds the author elements in the "entry" elements of the DFRN protocol
 467  *
 468  * @param object $doc XML document
 469  * @param string $element Element name for the author
 470  * @param string $contact_url Link of the contact
 471  * @param array $items Item elements
 472  *
 473  * @return object XML author object
 474  */
 475 function dfrn_add_entry_author($doc, $element, $contact_url, $item) {
 476         $a = get_app();
 477
 478         $contact = get_contact_details_by_url($contact_url, $item["uid"]);
 479
 480         $r = q("SELECT `profile`.`about`, `profile`.`name`, `profile`.`homepage`, `contact`.`nick`, `contact`.`location` FROM `profile`
 481                         INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
 482                         INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 483                         WHERE `contact`.`self` AND `profile`.`is-default` AND NOT `user`.`hidewall` AND `contact`.`nurl`='%s'",
 484                 dbesc(normalise_link($contact_url)));
 485         if ($r)
 486                 $profile = $r[0];
 487
 488         $author = $doc->createElement($element);
 489         xml_add_element($doc, $author, "name", $contact["name"]);
 490         xml_add_element($doc, $author, "uri", $contact["url"]);
 491
 492         /// @Todo
 493         /// - Check real image type and image size
 494         /// - Check which of these boths elements we really use
 495         $attributes = array(
 496                         "rel" => "photo",
 497                         "type" => "image/jpeg",
 498                         "media:width" => 80,
 499                         "media:height" => 80,
 500                         "href" => $contact["photo"]);
 501         xml_add_element($doc, $author, "link", "", $attributes);
 502
 503         $attributes = array(
 504                         "rel" => "avatar",
 505                         "type" => "image/jpeg",
 506                         "media:width" => 80,
 507                         "media:height" => 80,
 508                         "href" => $contact["photo"]);
 509         xml_add_element($doc, $author, "link", "", $attributes);
 510
 511         // Only show contact details when it is a user from our system and we are allowed to
 512         if ($profile) {
 513                 xml_add_element($doc, $author, "poco:preferredUsername", $profile["nick"]);
 514                 xml_add_element($doc, $author, "poco:displayName", $profile["name"]);
 515                 xml_add_element($doc, $author, "poco:note", $profile["about"]);
 516
 517                 if (trim($contact["location"]) != "") {
 518                         $element = $doc->createElement("poco:address");
 519                         xml_add_element($doc, $element, "poco:formatted", $profile["location"]);
 520                         $author->appendChild($element);
 521                 }
 522
 523                 if (trim($profile["homepage"]) != "") {
 524                         $urls = $doc->createElement("poco:urls");
 525                         xml_add_element($doc, $urls, "poco:type", "homepage");
 526                         xml_add_element($doc, $urls, "poco:value", $profile["homepage"]);
 527                         xml_add_element($doc, $urls, "poco:primary", "true");
 528                         $author->appendChild($urls);
 529                 }
 530         }
 531
 532         return $author;
 533 }
 534
 535 /**
 536  * @brief Adds the activity elements
 537  *
 538  * @param object $doc XML document
 539  * @param string $element Element name for the activity
 540  * @param string $activity activity value
 541  *
 542  * @return object XML activity object
 543  */
 544 function dfrn_create_activity($doc, $element, $activity) {
 545
 546         if($activity) {
 547                 $entry = $doc->createElement($element);
 548
 549                 $r = parse_xml_string($activity, false);
 550                 if(!$r)
 551                         return false;
 552                 if($r->type)
 553                         xml_add_element($doc, $entry, "activity:object-type", $r->type);
 554                 if($r->id)
 555                         xml_add_element($doc, $entry, "id", $r->id);
 556                 if($r->title)
 557                         xml_add_element($doc, $entry, "title", $r->title);
 558                 if($r->link) {
 559                         if(substr($r->link,0,1) === '<') {
 560                                 if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 561                                         $r->link = str_replace('&','&amp;', $r->link);
 562
 563                                 $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 564
 565                                 $data = parse_xml_string($r->link, false);
 566                                 foreach ($data->attributes() AS $parameter => $value)
 567                                         $attributes[$parameter] = $value;
 568                         } else
 569                                 $attributes = array("rel" => "alternate", "type" => "text/html", "href" => $r->link);
 570
 571                         xml_add_element($doc, $entry, "link", "", $attributes);
 572                 }
 573                 if($r->content)
 574                         xml_add_element($doc, $entry, "content", bbcode($r->content), array("type" => "html"));
 575
 576                 return $entry;
 577         }
 578
 579         return false;
 580 }
 581
 582 /**
 583  * @brief Adds the elements for attachments
 584  *
 585  * @param object $doc XML document
 586  * @param object $root XML root
 587  * @param array $item Item element
 588  *
 589  * @return object XML attachment object
 590  */
 591 function dfrn_get_attachment($doc, $root, $item) {
 592         $arr = explode('[/attach],',$item['attach']);
 593         if(count($arr)) {
 594                 foreach($arr as $r) {
 595                         $matches = false;
 596                         $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches);
 597                         if($cnt) {
 598                                 $attributes = array("rel" => "enclosure",
 599                                                 "href" => $matches[1],
 600                                                 "type" => $matches[3]);
 601
 602                                 if(intval($matches[2]))
 603                                         $attributes["length"] = intval($matches[2]);
 604
 605                                 if(trim($matches[4]) != "")
 606                                         $attributes["title"] = trim($matches[4]);
 607
 608                                 xml_add_element($doc, $root, "link", "", $attributes);
 609                         }
 610                 }
 611         }
 612 }
 613
 614 /**
 615  * @brief Adds the "entry" elements for the DFRN protocol
 616  *
 617  * @param object $doc XML document
 618  * @param string $type "text" or "html"
 619  * @param array $item Item element
 620  * @param array $owner Owner record
 621  * @param bool $comment Trigger the sending of the "comment" element
 622  * @param int $cid
 623  *
 624  * @return object XML entry object
 625  */
 626 function dfrn_entry($doc, $type, $item, $owner, $comment = false, $cid = 0) {
 627         $a = get_app();
 628
 629         $mentioned = array();
 630
 631         if(!$item['parent'])
 632                 return;
 633
 634         if($item['deleted']) {
 635                 $attributes = array("ref" => $item['uri'], "when" => datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME));
 636                 return xml_create_element($doc, "at:deleted-entry", "", $attributes);
 637         }
 638
 639         $entry = $doc->createElement("entry");
 640
 641         if($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid'])
 642                 $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid);
 643         else
 644                 $body = $item['body'];
 645
 646         if ($type == 'html') {
 647                 $htmlbody = $body;
 648
 649                 if ($item['title'] != "")
 650                         $htmlbody = "[b]".$item['title']."[/b]\n\n".$htmlbody;
 651
 652                 $htmlbody = bbcode($htmlbody, false, false, 7);
 653         }
 654
 655         $author = dfrn_add_entry_author($doc, "author", $item["author-link"], $item);
 656         $entry->appendChild($author);
 657
 658         $dfrnowner = dfrn_add_entry_author($doc, "dfrn:owner", $item["owner-link"], $item);
 659         $entry->appendChild($dfrnowner);
 660
 661         if(($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
 662                 $parent = q("SELECT `guid` FROM `item` WHERE `id` = %d", intval($item["parent"]));
 663                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
 664                 $attributes = array("ref" => $parent_item, "type" => "text/html", "href" => $a->get_baseurl().'/display/'.$parent[0]['guid']);
 665                 xml_add_element($doc, $entry, "thr:in-reply-to", "", $attributes);
 666         }
 667
 668         xml_add_element($doc, $entry, "id", $item["uri"]);
 669         xml_add_element($doc, $entry, "title", $item["title"]);
 670
 671         xml_add_element($doc, $entry, "published", datetime_convert("UTC","UTC",$item["created"]."+00:00",ATOM_TIME));
 672         xml_add_element($doc, $entry, "updated", datetime_convert("UTC","UTC",$item["edited"]."+00:00",ATOM_TIME));
 673
 674         xml_add_element($doc, $entry, "dfrn:env", base64url_encode($body, true));
 675         xml_add_element($doc, $entry, "content", (($type === 'html') ? $htmlbody : $body), array("type" => $type));
 676
 677         xml_add_element($doc, $entry, "link", "", array("rel" => "alternate", "type" => "text/html",
 678                                                         "href" => $a->get_baseurl()."/display/".$item["guid"]));
 679
 680         if ($comment)
 681                 xml_add_element($doc, $entry, "dfrn:comment-allow", intval($item['last-child']));
 682
 683         if($item['location'])
 684                 xml_add_element($doc, $entry, "dfrn:location", $item['location']);
 685
 686         if($item['coord'])
 687                 xml_add_element($doc, $entry, "georss:point", $item['coord']);
 688
 689         if(($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
 690                 xml_add_element($doc, $entry, "dfrn:private", (($item['private']) ? $item['private'] : 1));
 691
 692         if($item['extid'])
 693                 xml_add_element($doc, $entry, "dfrn:extid", $item['extid']);
 694
 695         if($item['bookmark'])
 696                 xml_add_element($doc, $entry, "dfrn:bookmark", "true");
 697
 698         if($item['app'])
 699                 xml_add_element($doc, $entry, "statusnet:notice_info", "", array("local_id" => $item['id'], "source" => $item['app']));
 700
 701         xml_add_element($doc, $entry, "dfrn:diaspora_guid", $item["guid"]);
 702
 703         if($item['signed_text']) {
 704                 $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
 705                 xml_add_element($doc, $entry, "dfrn:diaspora_signature", $sign);
 706         }
 707
 708         xml_add_element($doc, $entry, "activity:verb", construct_verb($item));
 709
 710         $actobj = dfrn_create_activity($doc, "activity:object", $item['object']);
 711         if ($actobj)
 712                 $entry->appendChild($actobj);
 713
 714         $actarg = dfrn_create_activity($doc, "activity:target", $item['target']);
 715         if ($actarg)
 716                 $entry->appendChild($actarg);
 717
 718         $tags = item_getfeedtags($item);
 719
 720         if(count($tags)) {
 721                 foreach($tags as $t)
 722                         if (($type != 'html') OR ($t[0] != "@"))
 723                                 xml_add_element($doc, $entry, "category", "", array("scheme" => "X-DFRN:".$t[0].":".$t[1], "term" => $t[2]));
 724         }
 725
 726         if(count($tags))
 727                 foreach($tags as $t)
 728                         if ($t[0] == "@")
 729                                 $mentioned[$t[1]] = $t[1];
 730
 731         foreach ($mentioned AS $mention) {
 732                 $r = q("SELECT `forum`, `prv` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s'",
 733                         intval($owner["uid"]),
 734                         dbesc(normalise_link($mention)));
 735                 if ($r[0]["forum"] OR $r[0]["prv"])
 736                         xml_add_element($doc, $entry, "link", "", array("rel" => "mentioned",
 737                                                                                 "ostatus:object-type" => ACTIVITY_OBJ_GROUP,
 738                                                                                 "href" => $mention));
 739                 else
 740                         xml_add_element($doc, $entry, "link", "", array("rel" => "mentioned",
 741                                                                                 "ostatus:object-type" => ACTIVITY_OBJ_PERSON,
 742                                                                                 "href" => $mention));
 743         }
 744
 745         dfrn_get_attachment($doc, $entry, $item);
 746
 747         return $entry;
 748 }