include/dfrn.php

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