include/ostatus.php

   1 <?php
   2 /**
   3  * @file include/ostatus.php
   4  */
   5
   6 use \Friendica\Core\Config;
   7
   8 require_once("include/Contact.php");
   9 require_once("include/threads.php");
  10 require_once("include/html2bbcode.php");
  11 require_once("include/bbcode.php");
  12 require_once("include/items.php");
  13 require_once("mod/share.php");
  14 require_once("include/enotify.php");
  15 require_once("include/socgraph.php");
  16 require_once("include/Photo.php");
  17 require_once("include/Scrape.php");
  18 require_once("include/follow.php");
  19 require_once("include/api.php");
  20 require_once("mod/proxy.php");
  21 require_once("include/xml.php");
  22
  23 /**
  24  * @brief This class contain functions for the OStatus protocol
  25  *
  26  */
  27 class ostatus {
  28         const OSTATUS_DEFAULT_POLL_INTERVAL = 30; // given in minutes
  29         const OSTATUS_DEFAULT_POLL_TIMEFRAME = 1440; // given in minutes
  30         const OSTATUS_DEFAULT_POLL_TIMEFRAME_MENTIONS = 14400; // given in minutes
  31
  32         /**
  33          * @brief Mix two paths together to possibly fix missing parts
  34          *
  35          * @param string $avatar Path to the avatar
  36          * @param string $base Another path that is hopefully complete
  37          *
  38          * @return string fixed avatar path
  39          */
  40         public static function fix_avatar($avatar, $base) {
  41                 $base_parts = parse_url($base);
  42
  43                 // Remove all parts that could create a problem
  44                 unset($base_parts['path']);
  45                 unset($base_parts['query']);
  46                 unset($base_parts['fragment']);
  47
  48                 $avatar_parts = parse_url($avatar);
  49
  50                 // Now we mix them
  51                 $parts = array_merge($base_parts, $avatar_parts);
  52
  53                 // And put them together again
  54                 $scheme   = isset($parts['scheme']) ? $parts['scheme'] . '://' : '';
  55                 $host     = isset($parts['host']) ? $parts['host'] : '';
  56                 $port     = isset($parts['port']) ? ':' . $parts['port'] : '';
  57                 $path     = isset($parts['path']) ? $parts['path'] : '';
  58                 $query    = isset($parts['query']) ? '?' . $parts['query'] : '';
  59                 $fragment = isset($parts['fragment']) ? '#' . $parts['fragment'] : '';
  60
  61                 $fixed = $scheme.$host.$port.$path.$query.$fragment;
  62
  63                 logger('Base: '.$base.' - Avatar: '.$avatar.' - Fixed: '.$fixed, LOGGER_DATA);
  64
  65                 return $fixed;
  66         }
  67
  68         /**
  69          * @brief Fetches author data
  70          *
  71          * @param object $xpath The xpath object
  72          * @param object $context The xml context of the author detals
  73          * @param array $importer user record of the importing user
  74          * @param array $contact Called by reference, will contain the fetched contact
  75          * @param bool $onlyfetch Only fetch the header without updating the contact entries
  76          *
  77          * @return array Array of author related entries for the item
  78          */
  79         private function fetchauthor($xpath, $context, $importer, &$contact, $onlyfetch) {
  80
  81                 $author = array();
  82                 $author["author-link"] = $xpath->evaluate('atom:author/atom:uri/text()', $context)->item(0)->nodeValue;
  83                 $author["author-name"] = $xpath->evaluate('atom:author/atom:name/text()', $context)->item(0)->nodeValue;
  84                 $addr = $xpath->evaluate('atom:author/atom:email/text()', $context)->item(0)->nodeValue;
  85
  86                 $aliaslink = $author["author-link"];
  87
  88                 $alternate = $xpath->query("atom:author/atom:link[@rel='alternate']", $context)->item(0)->attributes;
  89                 if (is_object($alternate)) {
  90                         foreach ($alternate AS $attributes) {
  91                                 if (($attributes->name == "href") AND ($attributes->textContent != "")) {
  92                                         $author["author-link"] = $attributes->textContent;
  93                                 }
  94                         }
  95                 }
  96
  97                 $author["contact-id"] = $contact["id"];
  98
  99                 if ($author["author-link"] != "") {
 100                         if ($aliaslink == "") {
 101                                 $aliaslink = $author["author-link"];
 102                         }
 103
 104                         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `nurl` IN ('%s', '%s') AND `network` != '%s'",
 105                                 intval($importer["uid"]), dbesc(normalise_link($author["author-link"])),
 106                                 dbesc(normalise_link($aliaslink)), dbesc(NETWORK_STATUSNET));
 107                         if (dbm::is_result($r)) {
 108                                 $contact = $r[0];
 109                                 $author["contact-id"] = $r[0]["id"];
 110                                 $author["author-link"] = $r[0]["url"];
 111                         }
 112                 } elseif ($addr != "") {
 113                         // Should not happen
 114                         $contact = dba::fetch_first("SELECT * FROM `contact` WHERE `uid` = ? AND `addr` = ? AND `network` != ?",
 115                                         $importer["uid"], $addr, NETWORK_STATUSNET);
 116                         if (dbm::is_result($contact)) {
 117                                 $author["contact-id"] = $contact["id"];
 118                                 $author["author-link"] = $contact["url"];
 119                         }
 120                 }
 121
 122                 $avatarlist = array();
 123                 $avatars = $xpath->query("atom:author/atom:link[@rel='avatar']", $context);
 124                 foreach($avatars AS $avatar) {
 125                         $href = "";
 126                         $width = 0;
 127                         foreach($avatar->attributes AS $attributes) {
 128                                 if ($attributes->name == "href")
 129                                         $href = $attributes->textContent;
 130                                 if ($attributes->name == "width")
 131                                         $width = $attributes->textContent;
 132                         }
 133                         if (($width > 0) AND ($href != ""))
 134                                 $avatarlist[$width] = $href;
 135                 }
 136                 if (count($avatarlist) > 0) {
 137                         krsort($avatarlist);
 138                         $author["author-avatar"] = self::fix_avatar(current($avatarlist), $author["author-link"]);
 139                 }
 140
 141                 $displayname = $xpath->evaluate('atom:author/poco:displayName/text()', $context)->item(0)->nodeValue;
 142                 if ($displayname != "")
 143                         $author["author-name"] = $displayname;
 144
 145                 $author["owner-name"] = $author["author-name"];
 146                 $author["owner-link"] = $author["author-link"];
 147                 $author["owner-avatar"] = $author["author-avatar"];
 148
 149                 // Only update the contacts if it is an OStatus contact
 150                 if ($r AND !$onlyfetch AND ($contact["network"] == NETWORK_OSTATUS)) {
 151
 152                         // Update contact data
 153
 154                         // This query doesn't seem to work
 155                         // $value = $xpath->query("atom:link[@rel='salmon']", $context)->item(0)->nodeValue;
 156                         // if ($value != "")
 157                         //      $contact["notify"] = $value;
 158
 159                         // This query doesn't seem to work as well - I hate these queries
 160                         // $value = $xpath->query("atom:link[@rel='self' and @type='application/atom+xml']", $context)->item(0)->nodeValue;
 161                         // if ($value != "")
 162                         //      $contact["poll"] = $value;
 163
 164                         $value = $xpath->evaluate('atom:author/atom:uri/text()', $context)->item(0)->nodeValue;
 165                         if ($value != "")
 166                                 $contact["alias"] = $value;
 167
 168                         $value = $xpath->evaluate('atom:author/poco:displayName/text()', $context)->item(0)->nodeValue;
 169                         if ($value != "")
 170                                 $contact["name"] = $value;
 171
 172                         $value = $xpath->evaluate('atom:author/poco:preferredUsername/text()', $context)->item(0)->nodeValue;
 173                         if ($value != "")
 174                                 $contact["nick"] = $value;
 175
 176                         $value = $xpath->evaluate('atom:author/poco:note/text()', $context)->item(0)->nodeValue;
 177                         if ($value != "")
 178                                 $contact["about"] = html2bbcode($value);
 179
 180                         $value = $xpath->evaluate('atom:author/poco:address/poco:formatted/text()', $context)->item(0)->nodeValue;
 181                         if ($value != "")
 182                                 $contact["location"] = $value;
 183
 184                         if (($contact["name"] != $r[0]["name"]) OR ($contact["nick"] != $r[0]["nick"]) OR ($contact["about"] != $r[0]["about"]) OR
 185                                 ($contact["alias"] != $r[0]["alias"]) OR ($contact["location"] != $r[0]["location"])) {
 186
 187                                 logger("Update contact data for contact ".$contact["id"], LOGGER_DEBUG);
 188
 189                                 q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `alias` = '%s', `about` = '%s', `location` = '%s', `name-date` = '%s' WHERE `id` = %d",
 190                                         dbesc($contact["name"]), dbesc($contact["nick"]), dbesc($contact["alias"]),
 191                                         dbesc($contact["about"]), dbesc($contact["location"]),
 192                                         dbesc(datetime_convert()), intval($contact["id"]));
 193                         }
 194
 195                         if (isset($author["author-avatar"]) AND ($author["author-avatar"] != $r[0]['avatar'])) {
 196                                 logger("Update profile picture for contact ".$contact["id"], LOGGER_DEBUG);
 197
 198                                 update_contact_avatar($author["author-avatar"], $importer["uid"], $contact["id"]);
 199                         }
 200
 201                         // Ensure that we are having this contact (with uid=0)
 202                         $cid = get_contact($author["author-link"], 0);
 203
 204                         if ($cid) {
 205                                 // Update it with the current values
 206                                 q("UPDATE `contact` SET `url` = '%s', `name` = '%s', `nick` = '%s', `alias` = '%s',
 207                                                 `about` = '%s', `location` = '%s',
 208                                                 `success_update` = '%s', `last-update` = '%s'
 209                                         WHERE `id` = %d",
 210                                         dbesc($author["author-link"]), dbesc($contact["name"]), dbesc($contact["nick"]),
 211                                         dbesc($contact["alias"]), dbesc($contact["about"]), dbesc($contact["location"]),
 212                                         dbesc(datetime_convert()), dbesc(datetime_convert()), intval($cid));
 213
 214                                 // Update the avatar
 215                                 update_contact_avatar($author["author-avatar"], 0, $cid);
 216                         }
 217
 218                         $contact["generation"] = 2;
 219                         $contact["hide"] = false; // OStatus contacts are never hidden
 220                         $contact["photo"] = $author["author-avatar"];
 221                         $gcid = update_gcontact($contact);
 222
 223                         link_gcontact($gcid, $contact["uid"], $contact["id"]);
 224                 }
 225
 226                 return($author);
 227         }
 228
 229         /**
 230          * @brief Fetches author data from a given XML string
 231          *
 232          * @param string $xml The XML
 233          * @param array $importer user record of the importing user
 234          *
 235          * @return array Array of author related entries for the item
 236          */
 237         public static function salmon_author($xml, $importer) {
 238
 239                 if ($xml == "")
 240                         return;
 241
 242                 $doc = new DOMDocument();
 243                 @$doc->loadXML($xml);
 244
 245                 $xpath = new DomXPath($doc);
 246                 $xpath->registerNamespace('atom', NAMESPACE_ATOM1);
 247                 $xpath->registerNamespace('thr', NAMESPACE_THREAD);
 248                 $xpath->registerNamespace('georss', NAMESPACE_GEORSS);
 249                 $xpath->registerNamespace('activity', NAMESPACE_ACTIVITY);
 250                 $xpath->registerNamespace('media', NAMESPACE_MEDIA);
 251                 $xpath->registerNamespace('poco', NAMESPACE_POCO);
 252                 $xpath->registerNamespace('ostatus', NAMESPACE_OSTATUS);
 253                 $xpath->registerNamespace('statusnet', NAMESPACE_STATUSNET);
 254
 255                 $entries = $xpath->query('/atom:entry');
 256
 257                 foreach ($entries AS $entry) {
 258                         // fetch the author
 259                         $author = self::fetchauthor($xpath, $entry, $importer, $contact, true);
 260                         return $author;
 261                 }
 262         }
 263
 264         /**
 265          * @brief Read attributes from element
 266          *
 267          * @param object $element Element object
 268          *
 269          * @return array attributes
 270          */
 271         private static function read_attributes($element) {
 272                 $attribute = array();
 273
 274                 foreach ($element->attributes AS $attributes) {
 275                         $attribute[$attributes->name] = $attributes->textContent;
 276                 }
 277
 278                 return $attribute;
 279         }
 280
 281         /**
 282          * @brief Imports an XML string containing OStatus elements
 283          *
 284          * @param string $xml The XML
 285          * @param array $importer user record of the importing user
 286          * @param $contact
 287          * @param array $hub Called by reference, returns the fetched hub data
 288          */
 289         public static function import($xml,$importer,&$contact, &$hub) {
 290                 /// @todo this function is too long. It has to be split in many parts
 291
 292                 logger("Import OStatus message", LOGGER_DEBUG);
 293
 294                 if ($xml == "") {
 295                         return;
 296                 }
 297                 //$tempfile = tempnam(get_temppath(), "import");
 298                 //file_put_contents($tempfile, $xml);
 299
 300                 $doc = new DOMDocument();
 301                 @$doc->loadXML($xml);
 302
 303                 $xpath = new DomXPath($doc);
 304                 $xpath->registerNamespace('atom', NAMESPACE_ATOM1);
 305                 $xpath->registerNamespace('thr', NAMESPACE_THREAD);
 306                 $xpath->registerNamespace('georss', NAMESPACE_GEORSS);
 307                 $xpath->registerNamespace('activity', NAMESPACE_ACTIVITY);
 308                 $xpath->registerNamespace('media', NAMESPACE_MEDIA);
 309                 $xpath->registerNamespace('poco', NAMESPACE_POCO);
 310                 $xpath->registerNamespace('ostatus', NAMESPACE_OSTATUS);
 311                 $xpath->registerNamespace('statusnet', NAMESPACE_STATUSNET);
 312
 313                 $gub = "";
 314                 $hub_attributes = $xpath->query("/atom:feed/atom:link[@rel='hub']")->item(0)->attributes;
 315                 if (is_object($hub_attributes)) {
 316                         foreach ($hub_attributes AS $hub_attribute) {
 317                                 if ($hub_attribute->name == "href") {
 318                                         $hub = $hub_attribute->textContent;
 319                                         logger("Found hub ".$hub, LOGGER_DEBUG);
 320                                 }
 321                         }
 322                 }
 323                 $header = array();
 324                 $header["uid"] = $importer["uid"];
 325                 $header["network"] = NETWORK_OSTATUS;
 326                 $header["type"] = "remote";
 327                 $header["wall"] = 0;
 328                 $header["origin"] = 0;
 329                 $header["gravity"] = GRAVITY_PARENT;
 330
 331                 // it could either be a received post or a post we fetched by ourselves
 332                 // depending on that, the first node is different
 333                 $first_child = $doc->firstChild->tagName;
 334
 335                 if ($first_child == "feed") {
 336                         $entries = $xpath->query('/atom:feed/atom:entry');
 337                         $header["protocol"] = PROTOCOL_OSTATUS_FEED;
 338                 } else {
 339                         $entries = $xpath->query('/atom:entry');
 340                         $header["protocol"] = PROTOCOL_OSTATUS_SALMON;
 341                 }
 342                 $conversation = "";
 343                 $conversationlist = array();
 344                 $item_id = 0;
 345
 346                 // Reverse the order of the entries
 347                 $entrylist = array();
 348
 349                 foreach ($entries AS $entry) {
 350                         $entrylist[] = $entry;
 351                 }
 352                 foreach (array_reverse($entrylist) AS $entry) {
 353
 354                         $mention = false;
 355
 356                         // fetch the author
 357                         if ($first_child == "feed") {
 358                                 $author = self::fetchauthor($xpath, $doc->firstChild, $importer, $contact, false);
 359                         } else {
 360                                 $author = self::fetchauthor($xpath, $entry, $importer, $contact, false);
 361                         }
 362                         $value = $xpath->evaluate('atom:author/poco:preferredUsername/text()', $context)->item(0)->nodeValue;
 363                         if ($value != "") {
 364                                 $nickname = $value;
 365                         } else {
 366                                 $nickname = $author["author-name"];
 367                         }
 368                         $item = array_merge($header, $author);
 369
 370                         // Now get the item
 371                         $item["uri"] = $xpath->query('atom:id/text()', $entry)->item(0)->nodeValue;
 372
 373                         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s'",
 374                                 intval($importer["uid"]), dbesc($item["uri"]));
 375                         if (dbm::is_result($r)) {
 376                                 logger("Item with uri ".$item["uri"]." for user ".$importer["uid"]." already existed under id ".$r[0]["id"], LOGGER_DEBUG);
 377                                 continue;
 378                         }
 379
 380                         $item["body"] = add_page_info_to_body(html2bbcode($xpath->query('atom:content/text()', $entry)->item(0)->nodeValue));
 381                         $item["object-type"] = $xpath->query('activity:object-type/text()', $entry)->item(0)->nodeValue;
 382                         $item["verb"] = $xpath->query('activity:verb/text()', $entry)->item(0)->nodeValue;
 383
 384                         // Mastodon Content Warning
 385                         if (($item["verb"] == ACTIVITY_POST) AND $xpath->evaluate('boolean(atom:summary)', $entry)) {
 386                                 $clear_text = $xpath->query('atom:summary/text()', $entry)->item(0)->nodeValue;
 387
 388                                 $item["body"] = html2bbcode($clear_text) . '[spoiler]' . $item["body"] . '[/spoiler]';
 389                         }
 390
 391                         if (($item["object-type"] == ACTIVITY_OBJ_BOOKMARK) OR ($item["object-type"] == ACTIVITY_OBJ_EVENT)) {
 392                                 $item["title"] = $xpath->query('atom:title/text()', $entry)->item(0)->nodeValue;
 393                                 $item["body"] = $xpath->query('atom:summary/text()', $entry)->item(0)->nodeValue;
 394                         } elseif ($item["object-type"] == ACTIVITY_OBJ_QUESTION) {
 395                                 $item["title"] = $xpath->query('atom:title/text()', $entry)->item(0)->nodeValue;
 396                         }
 397                         $item["source"] = $xml;
 398
 399                         /// @TODO
 400                         /// Delete a message
 401                         if ($item["verb"] == "qvitter-delete-notice" || $item["verb"] == ACTIVITY_DELETE) {
 402                                 // ignore "Delete" messages (by now)
 403                                 logger("Ignore delete message ".print_r($item, true));
 404                                 continue;
 405                         }
 406
 407                         if ($item["verb"] == ACTIVITY_JOIN) {
 408                                 // ignore "Join" messages
 409                                 logger("Ignore join message ".print_r($item, true));
 410                                 continue;
 411                         }
 412
 413                         if ($item["verb"] == ACTIVITY_FOLLOW) {
 414                                 new_follower($importer, $contact, $item, $nickname);
 415                                 continue;
 416                         }
 417
 418                         if ($item["verb"] == NAMESPACE_OSTATUS."/unfollow") {
 419                                 lose_follower($importer, $contact, $item, $dummy);
 420                                 continue;
 421                         }
 422
 423                         if ($item["verb"] == ACTIVITY_FAVORITE) {
 424                                 $orig_uri = $xpath->query("activity:object/atom:id", $entry)->item(0)->nodeValue;
 425                                 logger("Favorite ".$orig_uri." ".print_r($item, true));
 426
 427                                 $item["verb"] = ACTIVITY_LIKE;
 428                                 $item["parent-uri"] = $orig_uri;
 429                                 $item["gravity"] = GRAVITY_LIKE;
 430                         }
 431
 432                         if ($item["verb"] == NAMESPACE_OSTATUS."/unfavorite") {
 433                                 // Ignore "Unfavorite" message
 434                                 logger("Ignore unfavorite message ".print_r($item, true));
 435                                 continue;
 436                         }
 437
 438                         // http://activitystrea.ms/schema/1.0/rsvp-yes
 439                         if (!in_array($item["verb"], array(ACTIVITY_POST, ACTIVITY_LIKE, ACTIVITY_SHARE))) {
 440                                 logger("Unhandled verb ".$item["verb"]." ".print_r($item, true));
 441                         }
 442                         $item["created"] = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 443                         $item["edited"] = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 444                         $conversation = $xpath->query('ostatus:conversation/text()', $entry)->item(0)->nodeValue;
 445                         $item['conversation-uri'] = $conversation;
 446
 447                         $conv = $xpath->query('ostatus:conversation', $entry);
 448                         if (is_object($conv->item(0))) {
 449                                 foreach ($conv->item(0)->attributes AS $attributes) {
 450                                         if ($attributes->name == "ref") {
 451                                                 $item['conversation-uri'] = $attributes->textContent;
 452                                         }
 453                                         if ($attributes->name == "href") {
 454                                                 $item['conversation-href'] = $attributes->textContent;
 455                                         }
 456                                 }
 457                         }
 458
 459                         $related = "";
 460
 461                         $inreplyto = $xpath->query('thr:in-reply-to', $entry);
 462                         if (is_object($inreplyto->item(0))) {
 463                                 foreach ($inreplyto->item(0)->attributes AS $attributes) {
 464                                         if ($attributes->name == "ref") {
 465                                                 $item["parent-uri"] = $attributes->textContent;
 466                                         }
 467                                         if ($attributes->name == "href") {
 468                                                 $related = $attributes->textContent;
 469                                         }
 470                                 }
 471                         }
 472
 473                         $georsspoint = $xpath->query('georss:point', $entry);
 474                         if ($georsspoint) {
 475                                 $item["coord"] = $georsspoint->item(0)->nodeValue;
 476                         }
 477                         $categories = $xpath->query('atom:category', $entry);
 478                         if ($categories) {
 479                                 foreach ($categories AS $category) {
 480                                         foreach ($category->attributes AS $attributes) {
 481                                                 if ($attributes->name == "term") {
 482                                                         $term = $attributes->textContent;
 483                                                         if(strlen($item["tag"])) {
 484                                                                 $item["tag"] .= ',';
 485                                                         }
 486                                                         $item["tag"] .= "#[url=".App::get_baseurl()."/search?tag=".$term."]".$term."[/url]";
 487                                                 }
 488                                         }
 489                                 }
 490                         }
 491
 492                         $self = "";
 493                         $enclosure = "";
 494
 495                         $links = $xpath->query('atom:link', $entry);
 496                         if ($links) {
 497                                 foreach ($links AS $link) {
 498                                         $attribute = self::read_attributes($link);
 499
 500                                         if (($attribute['rel'] != "") AND ($attribute['href'] != "")) {
 501                                                 switch ($attribute['rel']) {
 502                                                         case "alternate":
 503                                                                 $item["plink"] = $attribute['href'];
 504                                                                 if (($item["object-type"] == ACTIVITY_OBJ_QUESTION) OR
 505                                                                         ($item["object-type"] == ACTIVITY_OBJ_EVENT)) {
 506                                                                         $item["body"] .= add_page_info($attribute['href']);
 507                                                                 }
 508                                                                 break;
 509                                                         case "ostatus:conversation":
 510                                                                 $conversation = $attribute['href'];
 511                                                                 $item['conversation-href'] = $conversation;
 512                                                                 if (!isset($item['conversation-uri'])) {
 513                                                                         $item['conversation-uri'] = $item['conversation-href'];
 514                                                                 }
 515                                                                 break;
 516                                                         case "enclosure":
 517                                                                 $enclosure = $attribute['href'];
 518                                                                 if (strlen($item["attach"])) {
 519                                                                         $item["attach"] .= ',';
 520                                                                 }
 521                                                                 if (!isset($attribute['length'])) {
 522                                                                         $attribute['length'] = "0";
 523                                                                 }
 524                                                                 $item["attach"] .= '[attach]href="'.$attribute['href'].'" length="'.$attribute['length'].'" type="'.$attribute['type'].'" title="'.$attribute['title'].'"[/attach]';
 525                                                                 break;
 526                                                         case "related":
 527                                                                 if ($item["object-type"] != ACTIVITY_OBJ_BOOKMARK) {
 528                                                                         if (!isset($item["parent-uri"])) {
 529                                                                                 $item["parent-uri"] = $attribute['href'];
 530                                                                         }
 531                                                                         if ($related == "") {
 532                                                                                 $related = $attribute['href'];
 533                                                                         }
 534                                                                 } else {
 535                                                                         $item["body"] .= add_page_info($attribute['href']);
 536                                                                 }
 537                                                                 break;
 538                                                         case "self":
 539                                                                 $self = $attribute['href'];
 540                                                                 break;
 541                                                         case "mentioned":
 542                                                                 // Notification check
 543                                                                 if ($importer["nurl"] == normalise_link($attribute['href'])) {
 544                                                                         $mention = true;
 545                                                                 }
 546                                                                 break;
 547                                                 }
 548                                         }
 549                                 }
 550                         }
 551
 552                         $local_id = "";
 553                         $repeat_of = "";
 554
 555                         $notice_info = $xpath->query('statusnet:notice_info', $entry);
 556                         if ($notice_info AND ($notice_info->length > 0)) {
 557                                 foreach ($notice_info->item(0)->attributes AS $attributes) {
 558                                         if ($attributes->name == "source") {
 559                                                 $item["app"] = strip_tags($attributes->textContent);
 560                                         }
 561                                         if ($attributes->name == "local_id") {
 562                                                 $local_id = $attributes->textContent;
 563                                         }
 564                                         if ($attributes->name == "repeat_of") {
 565                                                 $repeat_of = $attributes->textContent;
 566                                         }
 567                                 }
 568                         }
 569
 570                         // Is it a repeated post?
 571                         if (($repeat_of != "") OR ($item["verb"] == ACTIVITY_SHARE)) {
 572                                 $activityobjects = $xpath->query('activity:object', $entry)->item(0);
 573
 574                                 if (is_object($activityobjects)) {
 575
 576                                         $orig_uri = $xpath->query("activity:object/atom:id", $activityobjects)->item(0)->nodeValue;
 577                                         if (!isset($orig_uri)) {
 578                                                 $orig_uri = $xpath->query('atom:id/text()', $activityobjects)->item(0)->nodeValue;
 579                                         }
 580                                         $orig_links = $xpath->query("activity:object/atom:link[@rel='alternate']", $activityobjects);
 581                                         if ($orig_links AND ($orig_links->length > 0)) {
 582                                                 foreach ($orig_links->item(0)->attributes AS $attributes) {
 583                                                         if ($attributes->name == "href") {
 584                                                                 $orig_link = $attributes->textContent;
 585                                                         }
 586                                                 }
 587                                         }
 588                                         if (!isset($orig_link)) {
 589                                                 $orig_link = $xpath->query("atom:link[@rel='alternate']", $activityobjects)->item(0)->nodeValue;
 590                                         }
 591                                         if (!isset($orig_link)) {
 592                                                 $orig_link =  self::convert_href($orig_uri);
 593                                         }
 594                                         $orig_body = $xpath->query('activity:object/atom:content/text()', $activityobjects)->item(0)->nodeValue;
 595                                         if (!isset($orig_body)) {
 596                                                 $orig_body = $xpath->query('atom:content/text()', $activityobjects)->item(0)->nodeValue;
 597                                         }
 598                                         $orig_created = $xpath->query('atom:published/text()', $activityobjects)->item(0)->nodeValue;
 599                                         $orig_edited = $xpath->query('atom:updated/text()', $activityobjects)->item(0)->nodeValue;
 600
 601                                         $orig_contact = $contact;
 602                                         $orig_author = self::fetchauthor($xpath, $activityobjects, $importer, $orig_contact, false);
 603
 604                                         $item["author-name"] = $orig_author["author-name"];
 605                                         $item["author-link"] = $orig_author["author-link"];
 606                                         $item["author-avatar"] = $orig_author["author-avatar"];
 607
 608                                         $item["body"] = add_page_info_to_body(html2bbcode($orig_body));
 609                                         $item["created"] = $orig_created;
 610                                         $item["edited"] = $orig_edited;
 611
 612                                         $item["uri"] = $orig_uri;
 613
 614                                         if (!isset($item["plink"])) {
 615                                                 $item["plink"] = $orig_link;
 616                                         }
 617
 618                                         $item["verb"] = $xpath->query('activity:verb/text()', $activityobjects)->item(0)->nodeValue;
 619
 620                                         $item["object-type"] = $xpath->query('activity:object/activity:object-type/text()', $activityobjects)->item(0)->nodeValue;
 621                                         if (!isset($item["object-type"])) {
 622                                                 $item["object-type"] = $xpath->query('activity:object-type/text()', $activityobjects)->item(0)->nodeValue;
 623                                         }
 624
 625                                         $enclosures = $xpath->query("atom:link[@rel='alternate']", $activityobjects);
 626                                         if ($enclosures) {
 627                                                 foreach ($enclosures AS $link) {
 628                                                         $attribute = self::read_attributes($link);
 629                                                         if ($href != "") {
 630                                                                 $enclosure = $attribute['href'];
 631                                                                 if (strlen($item["attach"])) {
 632                                                                         $item["attach"] .= ',';
 633                                                                 }
 634                                                                 if (!isset($attribute['length'])) {
 635                                                                         $attribute['length'] = "0";
 636                                                                 }
 637                                                                 $item["attach"] .= '[attach]href="'.$attribute['href'].'" length="'.$attribute['length'].'" type="'.$attribute['type'].'" title="'.$attribute['title'].'"[/attach]';
 638                                                         }
 639                                                 }
 640                                         }
 641                                 }
 642                         }
 643
 644                         //if ($enclosure != "")
 645                         //      $item["body"] .= add_page_info($enclosure);
 646
 647                         if (isset($item["parent-uri"])) {
 648                                 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s'",
 649                                         intval($importer["uid"]), dbesc($item["parent-uri"]));
 650
 651                                 // Only fetch missing stuff if it is a comment or reshare.
 652                                 if (in_array($item["verb"], array(ACTIVITY_POST, ACTIVITY_SHARE)) AND
 653                                         !dbm::is_result($r) AND ($related != "")) {
 654                                         $reply_path = str_replace("/notice/", "/api/statuses/show/", $related).".atom";
 655
 656                                         if ($reply_path != $related) {
 657                                                 logger("Fetching related items for user ".$importer["uid"]." from ".$reply_path, LOGGER_DEBUG);
 658                                                 $reply_xml = fetch_url($reply_path);
 659
 660                                                 $reply_contact = $contact;
 661                                                 self::import($reply_xml,$importer,$reply_contact, $reply_hub);
 662
 663                                                 // After the import try to fetch the parent item again
 664                                                 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s'",
 665                                                         intval($importer["uid"]), dbesc($item["parent-uri"]));
 666                                         }
 667                                 }
 668                                 if (dbm::is_result($r)) {
 669                                         $item["type"] = 'remote-comment';
 670                                         $item["gravity"] = GRAVITY_COMMENT;
 671                                 }
 672                         } else {
 673                                 $item["parent-uri"] = $item["uri"];
 674                         }
 675                         $item_id = self::completion($conversation, $importer["uid"], $item, $self);
 676
 677                         if (!$item_id) {
 678                                 logger("Error storing item", LOGGER_DEBUG);
 679                                 continue;
 680                         }
 681
 682                         logger("Item was stored with id ".$item_id, LOGGER_DEBUG);
 683                 }
 684         }
 685
 686         /**
 687          * @brief Create an url out of an uri
 688          *
 689          * @param string $href URI in the format "parameter1:parameter1:..."
 690          *
 691          * @return string URL in the format http(s)://....
 692          */
 693         public static function convert_href($href) {
 694                 $elements = explode(":",$href);
 695
 696                 if ((count($elements) <= 2) OR ($elements[0] != "tag"))
 697                         return $href;
 698
 699                 $server = explode(",", $elements[1]);
 700                 $conversation = explode("=", $elements[2]);
 701
 702                 if ((count($elements) == 4) AND ($elements[2] == "post"))
 703                         return "http://".$server[0]."/notice/".$elements[3];
 704
 705                 if ((count($conversation) != 2) OR ($conversation[1] ==""))
 706                         return $href;
 707
 708                 if ($elements[3] == "objectType=thread")
 709                         return "http://".$server[0]."/conversation/".$conversation[1];
 710                 else
 711                         return "http://".$server[0]."/notice/".$conversation[1];
 712
 713                 return $href;
 714         }
 715
 716         /**
 717          * @brief Checks if there are entries in conversations that aren't present on our side
 718          *
 719          * @param bool $mentions Fetch conversations where we are mentioned
 720          * @param bool $override Override the interval setting
 721          */
 722         public static function check_conversations($mentions = false, $override = false) {
 723                 $last = get_config('system','ostatus_last_poll');
 724
 725                 $poll_interval = intval(get_config('system','ostatus_poll_interval'));
 726                 if (!$poll_interval) {
 727                         $poll_interval = self::OSTATUS_DEFAULT_POLL_INTERVAL;
 728                 }
 729
 730                 // Don't poll if the interval is set negative
 731                 if (($poll_interval < 0) AND !$override) {
 732                         return;
 733                 }
 734
 735                 if (!$mentions) {
 736                         $poll_timeframe = intval(get_config('system','ostatus_poll_timeframe'));
 737                         if (!$poll_timeframe) {
 738                                 $poll_timeframe = self::OSTATUS_DEFAULT_POLL_TIMEFRAME;
 739                         }
 740                 } else {
 741                         $poll_timeframe = intval(get_config('system','ostatus_poll_timeframe'));
 742                         if (!$poll_timeframe) {
 743                                 $poll_timeframe = self::OSTATUS_DEFAULT_POLL_TIMEFRAME_MENTIONS;
 744                         }
 745                 }
 746
 747
 748                 if ($last AND !$override) {
 749                         $next = $last + ($poll_interval * 60);
 750                         if ($next > time()) {
 751                                 logger('poll interval not reached');
 752                                 return;
 753                         }
 754                 }
 755
 756                 logger('cron_start');
 757
 758                 $start = date("Y-m-d H:i:s", time() - ($poll_timeframe * 60));
 759
 760                 if ($mentions) {
 761                         $conversations = q("SELECT `term`.`oid`, `term`.`url`, `term`.`uid` FROM `term`
 762                                                 STRAIGHT_JOIN `thread` ON `thread`.`iid` = `term`.`oid` AND `thread`.`uid` = `term`.`uid`
 763                                                 WHERE `term`.`type` = 7 AND `term`.`term` > '%s' AND `thread`.`mention`
 764                                                 GROUP BY `term`.`url`, `term`.`uid`, `term`.`oid`, `term`.`term` ORDER BY `term`.`term` DESC", dbesc($start));
 765                 } else {
 766                         $conversations = q("SELECT `oid`, `url`, `uid` FROM `term`
 767                                                 WHERE `type` = 7 AND `term` > '%s'
 768                                                 GROUP BY `url`, `uid`, `oid`, `term` ORDER BY `term` DESC", dbesc($start));
 769                 }
 770
 771                 foreach ($conversations AS $conversation) {
 772                         self::completion($conversation['url'], $conversation['uid']);
 773                 }
 774
 775                 logger('cron_end');
 776
 777                 set_config('system','ostatus_last_poll', time());
 778         }
 779
 780         /**
 781          * @brief Updates the gcontact table with actor data from the conversation
 782          *
 783          * @param object $actor The actor object that contains the contact data
 784          */
 785         private function conv_fetch_actor($actor) {
 786
 787                 // We set the generation to "3" since the data here is not as reliable as the data we get on other occasions
 788                 $contact = array("network" => NETWORK_OSTATUS, "generation" => 3);
 789
 790                 if (isset($actor->url))
 791                         $contact["url"] = $actor->url;
 792
 793                 if (isset($actor->displayName))
 794                         $contact["name"] = $actor->displayName;
 795
 796                 if (isset($actor->portablecontacts_net->displayName))
 797                         $contact["name"] = $actor->portablecontacts_net->displayName;
 798
 799                 if (isset($actor->portablecontacts_net->preferredUsername))
 800                         $contact["nick"] = $actor->portablecontacts_net->preferredUsername;
 801
 802                 if (isset($actor->id))
 803                         $contact["alias"] = $actor->id;
 804
 805                 if (isset($actor->summary))
 806                         $contact["about"] = $actor->summary;
 807
 808                 if (isset($actor->portablecontacts_net->note))
 809                         $contact["about"] = $actor->portablecontacts_net->note;
 810
 811                 if (isset($actor->portablecontacts_net->addresses->formatted))
 812                         $contact["location"] = $actor->portablecontacts_net->addresses->formatted;
 813
 814
 815                 if (isset($actor->image->url))
 816                         $contact["photo"] = $actor->image->url;
 817
 818                 if (isset($actor->image->width))
 819                         $avatarwidth = $actor->image->width;
 820
 821                 if (is_array($actor->status_net->avatarLinks))
 822                         foreach ($actor->status_net->avatarLinks AS $avatar) {
 823                                 if ($avatarsize < $avatar->width) {
 824                                         $contact["photo"] = $avatar->url;
 825                                         $avatarsize = $avatar->width;
 826                                 }
 827                         }
 828
 829                 $contact["hide"] = false; // OStatus contacts are never hidden
 830                 update_gcontact($contact);
 831         }
 832
 833         /**
 834          * @brief Fetches the conversation url for a given item link or conversation id
 835          *
 836          * @param string $self The link to the posting
 837          * @param string $conversation_id The conversation id
 838          *
 839          * @return string The conversation url
 840          */
 841         private function fetch_conversation($self, $conversation_id = "") {
 842
 843                 if ($conversation_id != "") {
 844                         $elements = explode(":", $conversation_id);
 845
 846                         if ((count($elements) <= 2) OR ($elements[0] != "tag"))
 847                                 return $conversation_id;
 848                 }
 849
 850                 if ($self == "")
 851                         return "";
 852
 853                 $json = str_replace(".atom", ".json", $self);
 854
 855                 $raw = fetch_url($json);
 856                 if ($raw == "")
 857                         return "";
 858
 859                 $data = json_decode($raw);
 860                 if (!is_object($data))
 861                         return "";
 862
 863                 $conversation_id = $data->statusnet_conversation_id;
 864
 865                 $pos = strpos($self, "/api/statuses/show/");
 866                 $base_url = substr($self, 0, $pos);
 867
 868                 return $base_url."/conversation/".$conversation_id;
 869         }
 870
 871         /**
 872          * @brief Fetches actor details of a given actor and user id
 873          *
 874          * @param string $actor The actor url
 875          * @param int $uid The user id
 876          * @param int $contact_id The default contact-id
 877          *
 878          * @return array Array with actor details
 879          */
 880         private function get_actor_details($actor, $uid, $contact_id) {
 881
 882                 $details = array();
 883
 884                 $contact = q("SELECT `id`, `rel`, `network` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s' AND `network` != '%s'",
 885                                         $uid, normalise_link($actor), NETWORK_STATUSNET);
 886
 887                 if (!$contact)
 888                         $contact = q("SELECT `id`, `rel`, `network` FROM `contact` WHERE `uid` = %d AND `alias` IN ('%s', '%s') AND `network` != '%s'",
 889                                         $uid, $actor, normalise_link($actor), NETWORK_STATUSNET);
 890
 891                 if ($contact) {
 892                         logger("Found contact for url ".$actor, LOGGER_DEBUG);
 893                         $details["contact_id"] = $contact[0]["id"];
 894                         $details["network"] = $contact[0]["network"];
 895
 896                         $details["not_following"] = !in_array($contact[0]["rel"], array(CONTACT_IS_SHARING, CONTACT_IS_FRIEND));
 897                 } else {
 898                         logger("No contact found for user ".$uid." and url ".$actor, LOGGER_DEBUG);
 899
 900                         // Adding a global contact
 901                         /// @TODO Use this data for the post
 902                         $details["global_contact_id"] = get_contact($actor, 0);
 903
 904                         logger("Global contact ".$global_contact_id." found for url ".$actor, LOGGER_DEBUG);
 905
 906                         $details["contact_id"] = $contact_id;
 907                         $details["network"] = NETWORK_OSTATUS;
 908
 909                         $details["not_following"] = true;
 910                 }
 911
 912                 return $details;
 913         }
 914
 915         /**
 916          * @brief Stores an item and completes the thread
 917          *
 918          * @param string $conversation_url The URI of the conversation
 919          * @param integer $uid The user id
 920          * @param array $item Data of the item that is to be posted
 921          *
 922          * @return integer The item id of the posted item array
 923          */
 924         private function completion($conversation_url, $uid, $item = array(), $self = "") {
 925
 926                 /// @todo This function is totally ugly and has to be rewritten totally
 927
 928                 // Import all threads or only threads that were started by our followers?
 929                 $all_threads = !get_config('system','ostatus_full_threads');
 930
 931                 $item_stored = -1;
 932
 933                 $conversation_url = self::fetch_conversation($self, $conversation_url);
 934
 935                 // If the thread shouldn't be completed then store the item and go away
 936                 // Don't do a completion on liked content
 937                 if (((intval(get_config('system','ostatus_poll_interval')) == -2) AND (count($item) > 0)) OR
 938                         ($item["verb"] == ACTIVITY_LIKE) OR ($conversation_url == "")) {
 939                         $item_stored = item_store($item, $all_threads);
 940                         return $item_stored;
 941                 } elseif (count($item) > 0) {
 942                         $item = store_conversation($item);
 943                 }
 944
 945                 // Get the parent
 946                 $parents = q("SELECT `item`.`id`, `item`.`parent`, `item`.`uri`, `item`.`contact-id`, `item`.`type`,
 947                                 `item`.`verb`, `item`.`visible` FROM `term`
 948                                 STRAIGHT_JOIN `item` AS `thritem` ON `thritem`.`parent` = `term`.`oid`
 949                                 STRAIGHT_JOIN `item` ON `item`.`parent` = `thritem`.`parent`
 950                                 WHERE `term`.`uid` = %d AND `term`.`otype` = %d AND `term`.`type` = %d AND `term`.`url` = '%s'",
 951                                 intval($uid), intval(TERM_OBJ_POST), intval(TERM_CONVERSATION), dbesc($conversation_url));
 952
 953 /*              2016-10-23: The old query will be kept until we are sure that the query above is a good and fast replacement
 954
 955                 $parents = q("SELECT `id`, `parent`, `uri`, `contact-id`, `type`, `verb`, `visible` FROM `item` WHERE `id` IN
 956                                 (SELECT `parent` FROM `item` WHERE `id` IN
 957                                         (SELECT `oid` FROM `term` WHERE `uid` = %d AND `otype` = %d AND `type` = %d AND `url` = '%s'))",
 958                                 intval($uid), intval(TERM_OBJ_POST), intval(TERM_CONVERSATION), dbesc($conversation_url));
 959 */
 960                 if ($parents)
 961                         $parent = $parents[0];
 962                 elseif (count($item) > 0) {
 963                         $parent = $item;
 964                         $parent["type"] = "remote";
 965                         $parent["verb"] = ACTIVITY_POST;
 966                         $parent["visible"] = 1;
 967                 } else {
 968                         // Preset the parent
 969                         $r = q("SELECT `id` FROM `contact` WHERE `self` AND `uid`=%d", $uid);
 970                         if (!$r)
 971                                 return(-2);
 972
 973                         $parent = array();
 974                         $parent["id"] = 0;
 975                         $parent["parent"] = 0;
 976                         $parent["uri"] = "";
 977                         $parent["contact-id"] = $r[0]["id"];
 978                         $parent["type"] = "remote";
 979                         $parent["verb"] = ACTIVITY_POST;
 980                         $parent["visible"] = 1;
 981                 }
 982
 983                 $conv = str_replace("/conversation/", "/api/statusnet/conversation/", $conversation_url).".as";
 984                 $pageno = 1;
 985                 $items = array();
 986
 987                 logger('fetching conversation url '.$conv.' (Self: '.$self.') for user '.$uid);
 988
 989                 do {
 990                         $conv_arr = z_fetch_url($conv."?page=".$pageno);
 991
 992                         // If it is a non-ssl site and there is an error, then try ssl or vice versa
 993                         if (!$conv_arr["success"] AND (substr($conv, 0, 7) == "http://")) {
 994                                 $conv = str_replace("http://", "https://", $conv);
 995                                 $conv_as = fetch_url($conv."?page=".$pageno);
 996                         } elseif (!$conv_arr["success"] AND (substr($conv, 0, 8) == "https://")) {
 997                                 $conv = str_replace("https://", "http://", $conv);
 998                                 $conv_as = fetch_url($conv."?page=".$pageno);
 999                         } else
1000                                 $conv_as = $conv_arr["body"];
1001
1002                         $conv_as = str_replace(',"statusnet:notice_info":', ',"statusnet_notice_info":', $conv_as);
1003                         $conv_as = json_decode($conv_as);
1004
1005                         $no_of_items = sizeof($items);
1006
1007                         if (@is_array($conv_as->items))
1008                                 foreach ($conv_as->items AS $single_item)
1009                                         $items[$single_item->id] = $single_item;
1010
1011                         if ($no_of_items == sizeof($items))
1012                                 break;
1013
1014                         $pageno++;
1015
1016                 } while (true);
1017
1018                 logger('fetching conversation done. Found '.count($items).' items');
1019
1020                 if (!sizeof($items)) {
1021                         if (count($item) > 0) {
1022                                 $item_stored = item_store($item, $all_threads);
1023
1024                                 if ($item_stored) {
1025                                         logger("Conversation ".$conversation_url." couldn't be fetched. Item uri ".$item["uri"]." stored: ".$item_stored, LOGGER_DEBUG);
1026                                         self::store_conversation($item_id, $conversation_url);
1027                                 }
1028
1029                                 return($item_stored);
1030                         } else
1031                                 return(-3);
1032                 }
1033
1034                 $items = array_reverse($items);
1035
1036                 $r = q("SELECT `nurl` FROM `contact` WHERE `uid` = %d AND `self`", intval($uid));
1037                 $importer = $r[0];
1038
1039                 $new_parent = true;
1040
1041                 foreach ($items as $single_conv) {
1042
1043                         // Update the gcontact table
1044                         self::conv_fetch_actor($single_conv->actor);
1045
1046                         // Test - remove before flight
1047                         //$tempfile = tempnam(get_temppath(), "conversation");
1048                         //file_put_contents($tempfile, json_encode($single_conv));
1049
1050                         $mention = false;
1051
1052                         if (isset($single_conv->object->id))
1053                                 $single_conv->id = $single_conv->object->id;
1054
1055                         $plink = self::convert_href($single_conv->id);
1056                         if (isset($single_conv->object->url))
1057                                 $plink = self::convert_href($single_conv->object->url);
1058
1059                         if (@!$single_conv->id)
1060                                 continue;
1061
1062                         logger("Got id ".$single_conv->id, LOGGER_DEBUG);
1063
1064                         if ($first_id == "") {
1065                                 $first_id = $single_conv->id;
1066
1067                                 // The first post of the conversation isn't our first post. There are three options:
1068                                 // 1. Our conversation hasn't the "real" thread starter
1069                                 // 2. This first post is a post inside our thread
1070                                 // 3. This first post is a post inside another thread
1071                                 if (($first_id != $parent["uri"]) AND ($parent["uri"] != "")) {
1072
1073                                         $new_parent = true;
1074
1075                                         $new_parents = q("SELECT `id`, `parent`, `uri`, `contact-id`, `type`, `verb`, `visible` FROM `item` WHERE `id` IN
1076                                                                 (SELECT `parent` FROM `item`
1077                                                                         WHERE `uid` = %d AND `uri` = '%s' AND `network` IN ('%s','%s')) LIMIT 1",
1078                                                 intval($uid), dbesc($first_id), dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN));
1079                                         if ($new_parents) {
1080                                                 if ($new_parents[0]["parent"] == $parent["parent"]) {
1081                                                         // Option 2: This post is already present inside our thread - but not as thread starter
1082                                                         logger("Option 2: uri present in our thread: ".$first_id, LOGGER_DEBUG);
1083                                                         $first_id = $parent["uri"];
1084                                                 } else {
1085                                                         // Option 3: Not so good. We have mixed parents. We have to see how to clean this up.
1086                                                         // For now just take the new parent.
1087                                                         $parent = $new_parents[0];
1088                                                         $first_id = $parent["uri"];
1089                                                         logger("Option 3: mixed parents for uri ".$first_id, LOGGER_DEBUG);
1090                                                 }
1091                                         } else {
1092                                                 // Option 1: We hadn't got the real thread starter
1093                                                 // We have to clean up our existing messages.
1094                                                 $parent["id"] = 0;
1095                                                 $parent["uri"] = $first_id;
1096                                                 logger("Option 1: we have a new parent: ".$first_id, LOGGER_DEBUG);
1097                                         }
1098                                 } elseif ($parent["uri"] == "") {
1099                                         $parent["id"] = 0;
1100                                         $parent["uri"] = $first_id;
1101                                 }
1102                         }
1103
1104                         $parent_uri = $parent["uri"];
1105
1106                         // "context" only seems to exist on older servers
1107                         if (isset($single_conv->context->inReplyTo->id)) {
1108                                 $parent_exists = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `network` IN ('%s','%s') LIMIT 1",
1109                                                         intval($uid), dbesc($single_conv->context->inReplyTo->id), dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN));
1110                                 if ($parent_exists)
1111                                         $parent_uri = $single_conv->context->inReplyTo->id;
1112                         }
1113
1114                         // This is the current way
1115                         if (isset($single_conv->object->inReplyTo->id)) {
1116                                 $parent_exists = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `network` IN ('%s','%s') LIMIT 1",
1117                                                         intval($uid), dbesc($single_conv->object->inReplyTo->id), dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN));
1118                                 if ($parent_exists)
1119                                         $parent_uri = $single_conv->object->inReplyTo->id;
1120                         }
1121
1122                         $message_exists = q("SELECT `id`, `parent`, `uri` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `network` IN ('%s','%s') LIMIT 1",
1123                                                         intval($uid), dbesc($single_conv->id),
1124                                                         dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN));
1125                         if ($message_exists) {
1126                                 logger("Message ".$single_conv->id." already existed on the system", LOGGER_DEBUG);
1127
1128                                 if ($parent["id"] != 0) {
1129                                         $existing_message = $message_exists[0];
1130
1131                                         // We improved the way we fetch OStatus messages, this shouldn't happen very often now
1132                                         /// @TODO We have to change the shadow copies as well. This way here is really ugly.
1133                                         if ($existing_message["parent"] != $parent["id"]) {
1134                                                 logger('updating id '.$existing_message["id"].' with parent '.$existing_message["parent"].' to parent '.$parent["id"].' uri '.$parent["uri"].' thread '.$parent_uri, LOGGER_DEBUG);
1135
1136                                                 // Update the parent id of the selected item
1137                                                 $r = q("UPDATE `item` SET `parent` = %d, `parent-uri` = '%s' WHERE `id` = %d",
1138                                                         intval($parent["id"]), dbesc($parent["uri"]), intval($existing_message["id"]));
1139
1140                                                 // Update the parent uri in the thread - but only if it points to itself
1141                                                 $r = q("UPDATE `item` SET `thr-parent` = '%s' WHERE `id` = %d AND `uri` = `thr-parent`",
1142                                                         dbesc($parent_uri), intval($existing_message["id"]));
1143
1144                                                 // try to change all items of the same parent
1145                                                 $r = q("UPDATE `item` SET `parent` = %d, `parent-uri` = '%s' WHERE `parent` = %d",
1146                                                         intval($parent["id"]), dbesc($parent["uri"]), intval($existing_message["parent"]));
1147
1148                                                 // Update the parent uri in the thread - but only if it points to itself
1149                                                 $r = q("UPDATE `item` SET `thr-parent` = '%s' WHERE (`parent` = %d) AND (`uri` = `thr-parent`)",
1150                                                         dbesc($parent["uri"]), intval($existing_message["parent"]));
1151
1152                                                 // Now delete the thread
1153                                                 delete_thread($existing_message["parent"]);
1154                                         }
1155                                 }
1156
1157                                 // The item we are having on the system is the one that we wanted to store via the item array
1158                                 if (isset($item["uri"]) AND ($item["uri"] == $existing_message["uri"])) {
1159                                         $item = array();
1160                                         $item_stored = 0;
1161                                 }
1162
1163                                 continue;
1164                         }
1165
1166                         if (is_array($single_conv->to))
1167                                 foreach($single_conv->to AS $to)
1168                                         if ($importer["nurl"] == normalise_link($to->id))
1169                                                 $mention = true;
1170
1171                         $actor = $single_conv->actor->id;
1172                         if (isset($single_conv->actor->url))
1173                                 $actor = $single_conv->actor->url;
1174
1175                         $details = self::get_actor_details($actor, $uid, $parent["contact-id"]);
1176
1177                         // Do we only want to import threads that were started by our contacts?
1178                         if ($details["not_following"] AND $new_parent AND get_config('system','ostatus_full_threads')) {
1179                                 logger("Don't import uri ".$first_id." because user ".$uid." doesn't follow the person ".$actor, LOGGER_DEBUG);
1180                                 continue;
1181                         }
1182
1183                         $arr = array();
1184                         $arr["network"] = $details["network"];
1185                         $arr["uri"] = $single_conv->id;
1186                         $arr["plink"] = $plink;
1187                         $arr["uid"] = $uid;
1188                         $arr["contact-id"] = $details["contact_id"];
1189                         $arr["parent-uri"] = $parent_uri;
1190                         $arr["created"] = $single_conv->published;
1191                         $arr["edited"] = $single_conv->published;
1192                         $arr["owner-name"] = $single_conv->actor->displayName;
1193                         if ($arr["owner-name"] == '')
1194                                 $arr["owner-name"] = $single_conv->actor->contact->displayName;
1195                         if ($arr["owner-name"] == '')
1196                                 $arr["owner-name"] = $single_conv->actor->portablecontacts_net->displayName;
1197
1198                         $arr["owner-link"] = $actor;
1199                         $arr["owner-avatar"] = self::fix_avatar($single_conv->actor->image->url, $arr["owner-link"]);
1200
1201                         $arr["author-name"] = $arr["owner-name"];
1202                         $arr["author-link"] = $arr["owner-link"];
1203                         $arr["author-avatar"] = $arr["owner-avatar"];
1204                         $arr["body"] = add_page_info_to_body(html2bbcode($single_conv->content));
1205
1206                         if (isset($single_conv->status_net->conversation)) {
1207                                 $arr['conversation-uri'] = $single_conv->status_net->conversation;
1208                         }
1209
1210                         if (isset($single_conv->status_net->notice_info->source))
1211                                 $arr["app"] = strip_tags($single_conv->status_net->notice_info->source);
1212                         elseif (isset($single_conv->statusnet->notice_info->source))
1213                                 $arr["app"] = strip_tags($single_conv->statusnet->notice_info->source);
1214                         elseif (isset($single_conv->statusnet_notice_info->source))
1215                                 $arr["app"] = strip_tags($single_conv->statusnet_notice_info->source);
1216                         elseif (isset($single_conv->provider->displayName))
1217                                 $arr["app"] = $single_conv->provider->displayName;
1218                         else
1219                                 $arr["app"] = "OStatus";
1220
1221
1222                         $arr["source"] = json_encode($single_conv);
1223                         $arr["protocol"] = PROTOCOL_GS_CONVERSATION;
1224
1225                         $arr["verb"] = $parent["verb"];
1226                         $arr["visible"] = $parent["visible"];
1227                         $arr["location"] = $single_conv->location->displayName;
1228                         $arr["coord"] = trim($single_conv->location->lat." ".$single_conv->location->lon);
1229
1230                         // Is it a reshared item?
1231                         if (isset($single_conv->verb) AND ($single_conv->verb == "share") AND isset($single_conv->object)) {
1232                                 if (is_array($single_conv->object))
1233                                         $single_conv->object = $single_conv->object[0];
1234
1235                                 logger("Found reshared item ".$single_conv->object->id);
1236
1237                                 // $single_conv->object->context->conversation;
1238
1239                                 if (isset($single_conv->object->object->id))
1240                                         $arr["uri"] = $single_conv->object->object->id;
1241                                 else
1242                                         $arr["uri"] = $single_conv->object->id;
1243
1244                                 if (isset($single_conv->object->object->url))
1245                                         $plink = self::convert_href($single_conv->object->object->url);
1246                                 else
1247                                         $plink = self::convert_href($single_conv->object->url);
1248
1249                                 if (isset($single_conv->object->object->content))
1250                                         $arr["body"] = add_page_info_to_body(html2bbcode($single_conv->object->object->content));
1251                                 else
1252                                         $arr["body"] = add_page_info_to_body(html2bbcode($single_conv->object->content));
1253
1254                                 $arr["plink"] = $plink;
1255
1256                                 $arr["created"] = $single_conv->object->published;
1257                                 $arr["edited"] = $single_conv->object->published;
1258
1259                                 $arr["author-name"] = $single_conv->object->actor->displayName;
1260                                 if ($arr["owner-name"] == '') {
1261                                         $arr["author-name"] = $single_conv->object->actor->contact->displayName;
1262                                 }
1263                                 $arr["author-link"] = $single_conv->object->actor->url;
1264                                 $arr["author-avatar"] = self::fix_avatar($single_conv->object->actor->image->url, $arr["author-link"]);
1265
1266                                 $arr["app"] = $single_conv->object->provider->displayName."#";
1267                                 //$arr["verb"] = $single_conv->object->verb;
1268
1269                                 $arr["location"] = $single_conv->object->location->displayName;
1270                                 $arr["coord"] = trim($single_conv->object->location->lat." ".$single_conv->object->location->lon);
1271                         }
1272
1273                         if ($arr["location"] == "")
1274                                 unset($arr["location"]);
1275
1276                         if ($arr["coord"] == "")
1277                                 unset($arr["coord"]);
1278
1279                         // Copy fields from given item array
1280                         if (isset($item["uri"]) AND (($item["uri"] == $arr["uri"]) OR ($item["uri"] ==  $single_conv->id))) {
1281                                 $copy_fields = array("owner-name", "owner-link", "owner-avatar", "author-name", "author-link", "author-avatar",
1282                                                         "gravity", "body", "object-type", "object", "verb", "created", "edited", "coord", "tag",
1283                                                         "title", "attach", "app", "type", "location", "contact-id", "uri");
1284                                 foreach ($copy_fields AS $field)
1285                                         if (isset($item[$field]))
1286                                                 $arr[$field] = $item[$field];
1287
1288                         }
1289
1290                         $newitem = item_store($arr);
1291                         if (!$newitem) {
1292                                 logger("Item wasn't stored ".print_r($arr, true), LOGGER_DEBUG);
1293                                 continue;
1294                         }
1295
1296                         if (isset($item["uri"]) AND ($item["uri"] == $arr["uri"])) {
1297                                 $item = array();
1298                                 $item_stored = $newitem;
1299                         }
1300
1301                         logger('Stored new item '.$plink.' for parent '.$arr["parent-uri"].' under id '.$newitem, LOGGER_DEBUG);
1302
1303                         // Add the conversation entry (but don't fetch the whole conversation)
1304                         self::store_conversation($newitem, $conversation_url);
1305
1306                         // If the newly created item is the top item then change the parent settings of the thread
1307                         // This shouldn't happen anymore. This is supposed to be absolote.
1308                         if ($arr["uri"] == $first_id) {
1309                                 logger('setting new parent to id '.$newitem);
1310                                 $new_parents = q("SELECT `id`, `uri`, `contact-id`, `type`, `verb`, `visible` FROM `item` WHERE `uid` = %d AND `id` = %d LIMIT 1",
1311                                         intval($uid), intval($newitem));
1312                                 if ($new_parents)
1313                                         $parent = $new_parents[0];
1314                         }
1315                 }
1316
1317                 if (($item_stored < 0) AND (count($item) > 0)) {
1318
1319                         if (get_config('system','ostatus_full_threads')) {
1320                                 $details = self::get_actor_details($item["owner-link"], $uid, $item["contact-id"]);
1321                                 if ($details["not_following"]) {
1322                                         logger("Don't import uri ".$item["uri"]." because user ".$uid." doesn't follow the person ".$item["owner-link"], LOGGER_DEBUG);
1323                                         return false;
1324                                 }
1325                         }
1326
1327                         $item_stored = item_store($item, $all_threads);
1328                         if ($item_stored) {
1329                                 logger("Uri ".$item["uri"]." wasn't found in conversation ".$conversation_url, LOGGER_DEBUG);
1330                                 self::store_conversation($item_stored, $conversation_url);
1331                         }
1332                 }
1333
1334                 return($item_stored);
1335         }
1336
1337         /**
1338          * @brief Stores conversation data into the database
1339          *
1340          * @param integer $itemid The id of the item
1341          * @param string $conversation_url The uri of the conversation
1342          */
1343         private function store_conversation($itemid, $conversation_url) {
1344
1345                 $conversation_url = self::convert_href($conversation_url);
1346
1347                 $messages = q("SELECT `uid`, `parent`, `created`, `received`, `guid` FROM `item` WHERE `id` = %d LIMIT 1", intval($itemid));
1348                 if (!$messages)
1349                         return;
1350                 $message = $messages[0];
1351
1352                 // Store conversation url if not done before
1353                 $conversation = q("SELECT `url` FROM `term` WHERE `uid` = %d AND `oid` = %d AND `otype` = %d AND `type` = %d",
1354                         intval($message["uid"]), intval($itemid), intval(TERM_OBJ_POST), intval(TERM_CONVERSATION));
1355
1356                 if (!$conversation) {
1357                         $r = q("INSERT INTO `term` (`uid`, `oid`, `otype`, `type`, `term`, `url`, `created`, `received`, `guid`) VALUES (%d, %d, %d, %d, '%s', '%s', '%s', '%s', '%s')",
1358                                 intval($message["uid"]), intval($itemid), intval(TERM_OBJ_POST), intval(TERM_CONVERSATION),
1359                                 dbesc($message["created"]), dbesc($conversation_url), dbesc($message["created"]), dbesc($message["received"]), dbesc($message["guid"]));
1360                         logger('Storing conversation url '.$conversation_url.' for id '.$itemid);
1361                 }
1362         }
1363
1364         /**
1365          * @brief Checks if the current post is a reshare
1366          *
1367          * @param array $item The item array of thw post
1368          *
1369          * @return string The guid if the post is a reshare
1370          */
1371         private function get_reshared_guid($item) {
1372                 $body = trim($item["body"]);
1373
1374                 // Skip if it isn't a pure repeated messages
1375                 // Does it start with a share?
1376                 if (strpos($body, "[share") > 0)
1377                         return("");
1378
1379                 // Does it end with a share?
1380                 if (strlen($body) > (strrpos($body, "[/share]") + 8))
1381                         return("");
1382
1383                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
1384                 // Skip if there is no shared message in there
1385                 if ($body == $attributes)
1386                         return(false);
1387
1388                 $guid = "";
1389                 preg_match("/guid='(.*?)'/ism", $attributes, $matches);
1390                 if ($matches[1] != "")
1391                         $guid = $matches[1];
1392
1393                 preg_match('/guid="(.*?)"/ism', $attributes, $matches);
1394                 if ($matches[1] != "")
1395                         $guid = $matches[1];
1396
1397                 return $guid;
1398         }
1399
1400         /**
1401          * @brief Cleans the body of a post if it contains picture links
1402          *
1403          * @param string $body The body
1404          *
1405          * @return string The cleaned body
1406          */
1407         private function format_picture_post($body) {
1408                 $siteinfo = get_attached_data($body);
1409
1410                 if (($siteinfo["type"] == "photo")) {
1411                         if (isset($siteinfo["preview"]))
1412                                 $preview = $siteinfo["preview"];
1413                         else
1414                                 $preview = $siteinfo["image"];
1415
1416                         // Is it a remote picture? Then make a smaller preview here
1417                         $preview = proxy_url($preview, false, PROXY_SIZE_SMALL);
1418
1419                         // Is it a local picture? Then make it smaller here
1420                         $preview = str_replace(array("-0.jpg", "-0.png"), array("-2.jpg", "-2.png"), $preview);
1421                         $preview = str_replace(array("-1.jpg", "-1.png"), array("-2.jpg", "-2.png"), $preview);
1422
1423                         if (isset($siteinfo["url"]))
1424                                 $url = $siteinfo["url"];
1425                         else
1426                                 $url = $siteinfo["image"];
1427
1428                         $body = trim($siteinfo["text"])." [url]".$url."[/url]\n[img]".$preview."[/img]";
1429                 }
1430
1431                 return $body;
1432         }
1433
1434         /**
1435          * @brief Adds the header elements to the XML document
1436          *
1437          * @param object $doc XML document
1438          * @param array $owner Contact data of the poster
1439          *
1440          * @return object header root element
1441          */
1442         private function add_header($doc, $owner) {
1443
1444                 $a = get_app();
1445
1446                 $root = $doc->createElementNS(NAMESPACE_ATOM1, 'feed');
1447                 $doc->appendChild($root);
1448
1449                 $root->setAttribute("xmlns:thr", NAMESPACE_THREAD);
1450                 $root->setAttribute("xmlns:georss", NAMESPACE_GEORSS);
1451                 $root->setAttribute("xmlns:activity", NAMESPACE_ACTIVITY);
1452                 $root->setAttribute("xmlns:media", NAMESPACE_MEDIA);
1453                 $root->setAttribute("xmlns:poco", NAMESPACE_POCO);
1454                 $root->setAttribute("xmlns:ostatus", NAMESPACE_OSTATUS);
1455                 $root->setAttribute("xmlns:statusnet", NAMESPACE_STATUSNET);
1456                 $root->setAttribute("xmlns:mastodon", NAMESPACE_MASTODON);
1457
1458                 $attributes = array("uri" => "https://friendi.ca", "version" => FRIENDICA_VERSION."-".DB_UPDATE_VERSION);
1459                 xml::add_element($doc, $root, "generator", FRIENDICA_PLATFORM, $attributes);
1460                 xml::add_element($doc, $root, "id", App::get_baseurl()."/profile/".$owner["nick"]);
1461                 xml::add_element($doc, $root, "title", sprintf("%s timeline", $owner["name"]));
1462                 xml::add_element($doc, $root, "subtitle", sprintf("Updates from %s on %s", $owner["name"], $a->config["sitename"]));
1463                 xml::add_element($doc, $root, "logo", $owner["photo"]);
1464                 xml::add_element($doc, $root, "updated", datetime_convert("UTC", "UTC", "now", ATOM_TIME));
1465
1466                 $author = self::add_author($doc, $owner);
1467                 $root->appendChild($author);
1468
1469                 $attributes = array("href" => $owner["url"], "rel" => "alternate", "type" => "text/html");
1470                 xml::add_element($doc, $root, "link", "", $attributes);
1471
1472                 /// @TODO We have to find out what this is
1473                 /// $attributes = array("href" => App::get_baseurl()."/sup",
1474                 ///             "rel" => "http://api.friendfeed.com/2008/03#sup",
1475                 ///             "type" => "application/json");
1476                 /// xml::add_element($doc, $root, "link", "", $attributes);
1477
1478                 self::hublinks($doc, $root);
1479
1480                 $attributes = array("href" => App::get_baseurl()."/salmon/".$owner["nick"], "rel" => "salmon");
1481                 xml::add_element($doc, $root, "link", "", $attributes);
1482
1483                 $attributes = array("href" => App::get_baseurl()."/salmon/".$owner["nick"], "rel" => "http://salmon-protocol.org/ns/salmon-replies");
1484                 xml::add_element($doc, $root, "link", "", $attributes);
1485
1486                 $attributes = array("href" => App::get_baseurl()."/salmon/".$owner["nick"], "rel" => "http://salmon-protocol.org/ns/salmon-mention");
1487                 xml::add_element($doc, $root, "link", "", $attributes);
1488
1489                 $attributes = array("href" => App::get_baseurl()."/api/statuses/user_timeline/".$owner["nick"].".atom",
1490                                 "rel" => "self", "type" => "application/atom+xml");
1491                 xml::add_element($doc, $root, "link", "", $attributes);
1492
1493                 return $root;
1494         }
1495
1496         /**
1497          * @brief Add the link to the push hubs to the XML document
1498          *
1499          * @param object $doc XML document
1500          * @param object $root XML root element where the hub links are added
1501          */
1502         public static function hublinks($doc, $root) {
1503                 $hub = get_config('system','huburl');
1504
1505                 $hubxml = '';
1506                 if(strlen($hub)) {
1507                         $hubs = explode(',', $hub);
1508                         if(count($hubs)) {
1509                                 foreach($hubs as $h) {
1510                                         $h = trim($h);
1511                                         if(! strlen($h))
1512                                                 continue;
1513                                         if ($h === '[internal]')
1514                                                 $h = App::get_baseurl() . '/pubsubhubbub';
1515                                         xml::add_element($doc, $root, "link", "", array("href" => $h, "rel" => "hub"));
1516                                 }
1517                         }
1518                 }
1519         }
1520
1521         /**
1522          * @brief Adds attachement data to the XML document
1523          *
1524          * @param object $doc XML document
1525          * @param object $root XML root element where the hub links are added
1526          * @param array $item Data of the item that is to be posted
1527          */
1528         private function get_attachment($doc, $root, $item) {
1529                 $o = "";
1530                 $siteinfo = get_attached_data($item["body"]);
1531
1532                 switch ($siteinfo["type"]) {
1533                         case 'photo':
1534                                 $imgdata = get_photo_info($siteinfo["image"]);
1535                                 $attributes = array("rel" => "enclosure",
1536                                                 "href" => $siteinfo["image"],
1537                                                 "type" => $imgdata["mime"],
1538                                                 "length" => intval($imgdata["size"]));
1539                                 xml::add_element($doc, $root, "link", "", $attributes);
1540                                 break;
1541                         case 'video':
1542                                 $attributes = array("rel" => "enclosure",
1543                                                 "href" => $siteinfo["url"],
1544                                                 "type" => "text/html; charset=UTF-8",
1545                                                 "length" => "",
1546                                                 "title" => $siteinfo["title"]);
1547                                 xml::add_element($doc, $root, "link", "", $attributes);
1548                                 break;
1549                         default:
1550                                 break;
1551                 }
1552
1553                 if (($siteinfo["type"] != "photo") AND isset($siteinfo["image"])) {
1554                         $imgdata = get_photo_info($siteinfo["image"]);
1555                         $attributes = array("rel" => "enclosure",
1556                                         "href" => $siteinfo["image"],
1557                                         "type" => $imgdata["mime"],
1558                                         "length" => intval($imgdata["size"]));
1559
1560                         xml::add_element($doc, $root, "link", "", $attributes);
1561                 }
1562
1563                 $arr = explode('[/attach],', $item['attach']);
1564                 if (count($arr)) {
1565                         foreach ($arr as $r) {
1566                                 $matches = false;
1567                                 $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|', $r, $matches);
1568                                 if ($cnt) {
1569                                         $attributes = array("rel" => "enclosure",
1570                                                         "href" => $matches[1],
1571                                                         "type" => $matches[3]);
1572
1573                                         if (intval($matches[2])) {
1574                                                 $attributes["length"] = intval($matches[2]);
1575                                         }
1576                                         if (trim($matches[4]) != "") {
1577                                                 $attributes["title"] = trim($matches[4]);
1578                                         }
1579                                         xml::add_element($doc, $root, "link", "", $attributes);
1580                                 }
1581                         }
1582                 }
1583         }
1584
1585         /**
1586          * @brief Adds the author element to the XML document
1587          *
1588          * @param object $doc XML document
1589          * @param array $owner Contact data of the poster
1590          *
1591          * @return object author element
1592          */
1593         private function add_author($doc, $owner) {
1594
1595                 $r = q("SELECT `homepage`, `publish` FROM `profile` WHERE `uid` = %d AND `is-default` LIMIT 1", intval($owner["uid"]));
1596                 if ($r)
1597                         $profile = $r[0];
1598
1599                 $author = $doc->createElement("author");
1600                 xml::add_element($doc, $author, "id", $owner["url"]);
1601                 xml::add_element($doc, $author, "activity:object-type", ACTIVITY_OBJ_PERSON);
1602                 xml::add_element($doc, $author, "uri", $owner["url"]);
1603                 xml::add_element($doc, $author, "name", $owner["nick"]);
1604                 xml::add_element($doc, $author, "email", $owner["addr"]);
1605                 xml::add_element($doc, $author, "summary", bbcode($owner["about"], false, false, 7));
1606
1607                 $attributes = array("rel" => "alternate", "type" => "text/html", "href" => $owner["url"]);
1608                 xml::add_element($doc, $author, "link", "", $attributes);
1609
1610                 $attributes = array(
1611                                 "rel" => "avatar",
1612                                 "type" => "image/jpeg", // To-Do?
1613                                 "media:width" => 175,
1614                                 "media:height" => 175,
1615                                 "href" => $owner["photo"]);
1616                 xml::add_element($doc, $author, "link", "", $attributes);
1617
1618                 if (isset($owner["thumb"])) {
1619                         $attributes = array(
1620                                         "rel" => "avatar",
1621                                         "type" => "image/jpeg", // To-Do?
1622                                         "media:width" => 80,
1623                                         "media:height" => 80,
1624                                         "href" => $owner["thumb"]);
1625                         xml::add_element($doc, $author, "link", "", $attributes);
1626                 }
1627
1628                 xml::add_element($doc, $author, "poco:preferredUsername", $owner["nick"]);
1629                 xml::add_element($doc, $author, "poco:displayName", $owner["name"]);
1630                 xml::add_element($doc, $author, "poco:note", bbcode($owner["about"], false, false, 7));
1631
1632                 if (trim($owner["location"]) != "") {
1633                         $element = $doc->createElement("poco:address");
1634                         xml::add_element($doc, $element, "poco:formatted", $owner["location"]);
1635                         $author->appendChild($element);
1636                 }
1637
1638                 if (trim($profile["homepage"]) != "") {
1639                         $urls = $doc->createElement("poco:urls");
1640                         xml::add_element($doc, $urls, "poco:type", "homepage");
1641                         xml::add_element($doc, $urls, "poco:value", $profile["homepage"]);
1642                         xml::add_element($doc, $urls, "poco:primary", "true");
1643                         $author->appendChild($urls);
1644                 }
1645
1646                 if (count($profile)) {
1647                         xml::add_element($doc, $author, "followers", "", array("url" => App::get_baseurl()."/viewcontacts/".$owner["nick"]));
1648                         xml::add_element($doc, $author, "statusnet:profile_info", "", array("local_id" => $owner["uid"]));
1649                 }
1650
1651                 if ($profile["publish"]) {
1652                         xml::add_element($doc, $author, "mastodon:scope", "public");
1653                 }
1654                 return $author;
1655         }
1656
1657         /**
1658          * @TODO Picture attachments should look like this:
1659          *      <a href="https://status.pirati.ca/attachment/572819" title="https://status.pirati.ca/file/heluecht-20151202T222602-rd3u49p.gif"
1660          *      class="attachment thumbnail" id="attachment-572819" rel="nofollow external">https://status.pirati.ca/attachment/572819</a>
1661          *
1662         */
1663
1664         /**
1665          * @brief Returns the given activity if present - otherwise returns the "post" activity
1666          *
1667          * @param array $item Data of the item that is to be posted
1668          *
1669          * @return string activity
1670          */
1671         function construct_verb($item) {
1672                 if ($item['verb'])
1673                         return $item['verb'];
1674                 return ACTIVITY_POST;
1675         }
1676
1677         /**
1678          * @brief Returns the given object type if present - otherwise returns the "note" object type
1679          *
1680          * @param array $item Data of the item that is to be posted
1681          *
1682          * @return string Object type
1683          */
1684         function construct_objecttype($item) {
1685                 if (in_array($item['object-type'], array(ACTIVITY_OBJ_NOTE, ACTIVITY_OBJ_COMMENT)))
1686                         return $item['object-type'];
1687                 return ACTIVITY_OBJ_NOTE;
1688         }
1689
1690         /**
1691          * @brief Adds an entry element to the XML document
1692          *
1693          * @param object $doc XML document
1694          * @param array $item Data of the item that is to be posted
1695          * @param array $owner Contact data of the poster
1696          * @param bool $toplevel
1697          *
1698          * @return object Entry element
1699          */
1700         private function entry($doc, $item, $owner, $toplevel = false) {
1701                 $repeated_guid = self::get_reshared_guid($item);
1702                 if ($repeated_guid != "")
1703                         $xml = self::reshare_entry($doc, $item, $owner, $repeated_guid, $toplevel);
1704
1705                 if ($xml)
1706                         return $xml;
1707
1708                 if ($item["verb"] == ACTIVITY_LIKE) {
1709                         return self::like_entry($doc, $item, $owner, $toplevel);
1710                 } elseif (in_array($item["verb"], array(ACTIVITY_FOLLOW, NAMESPACE_OSTATUS."/unfollow"))) {
1711                         return self::follow_entry($doc, $item, $owner, $toplevel);
1712                 } else {
1713                         return self::note_entry($doc, $item, $owner, $toplevel);
1714                 }
1715         }
1716
1717         /**
1718          * @brief Adds a source entry to the XML document
1719          *
1720          * @param object $doc XML document
1721          * @param array $contact Array of the contact that is added
1722          *
1723          * @return object Source element
1724          */
1725         private function source_entry($doc, $contact) {
1726                 $source = $doc->createElement("source");
1727                 xml::add_element($doc, $source, "id", $contact["poll"]);
1728                 xml::add_element($doc, $source, "title", $contact["name"]);
1729                 xml::add_element($doc, $source, "link", "", array("rel" => "alternate",
1730                                                                 "type" => "text/html",
1731                                                                 "href" => $contact["alias"]));
1732                 xml::add_element($doc, $source, "link", "", array("rel" => "self",
1733                                                                 "type" => "application/atom+xml",
1734                                                                 "href" => $contact["poll"]));
1735                 xml::add_element($doc, $source, "icon", $contact["photo"]);
1736                 xml::add_element($doc, $source, "updated", datetime_convert("UTC","UTC",$contact["success_update"]."+00:00",ATOM_TIME));
1737
1738                 return $source;
1739         }
1740
1741         /**
1742          * @brief Fetches contact data from the contact or the gcontact table
1743          *
1744          * @param string $url URL of the contact
1745          * @param array $owner Contact data of the poster
1746          *
1747          * @return array Contact array
1748          */
1749         private function contact_entry($url, $owner) {
1750
1751                 $r = q("SELECT * FROM `contact` WHERE `nurl` = '%s' AND `uid` IN (0, %d) ORDER BY `uid` DESC LIMIT 1",
1752                         dbesc(normalise_link($url)), intval($owner["uid"]));
1753                 if ($r) {
1754                         $contact = $r[0];
1755                         $contact["uid"] = -1;
1756                 }
1757
1758                 if (!$r) {
1759                         $r = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
1760                                 dbesc(normalise_link($url)));
1761                         if ($r) {
1762                                 $contact = $r[0];
1763                                 $contact["uid"] = -1;
1764                                 $contact["success_update"] = $contact["updated"];
1765                         }
1766                 }
1767
1768                 if (!$r)
1769                         $contact = owner;
1770
1771                 if (!isset($contact["poll"])) {
1772                         $data = probe_url($url);
1773                         $contact["poll"] = $data["poll"];
1774
1775                         if (!$contact["alias"])
1776                                 $contact["alias"] = $data["alias"];
1777                 }
1778
1779                 if (!isset($contact["alias"]))
1780                         $contact["alias"] = $contact["url"];
1781
1782                 return $contact;
1783         }
1784
1785         /**
1786          * @brief Adds an entry element with reshared content
1787          *
1788          * @param object $doc XML document
1789          * @param array $item Data of the item that is to be posted
1790          * @param array $owner Contact data of the poster
1791          * @param $repeated_guid
1792          * @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
1793          *
1794          * @return object Entry element
1795          */
1796         private function reshare_entry($doc, $item, $owner, $repeated_guid, $toplevel) {
1797
1798                 if (($item["id"] != $item["parent"]) AND (normalise_link($item["author-link"]) != normalise_link($owner["url"]))) {
1799                         logger("OStatus entry is from author ".$owner["url"]." - not from ".$item["author-link"].". Quitting.", LOGGER_DEBUG);
1800                 }
1801
1802                 $title = self::entry_header($doc, $entry, $owner, $toplevel);
1803
1804                 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' AND NOT `private` AND `network` IN ('%s', '%s', '%s') LIMIT 1",
1805                         intval($owner["uid"]), dbesc($repeated_guid),
1806                         dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS));
1807                 if ($r)
1808                         $repeated_item = $r[0];
1809                 else
1810                         return false;
1811
1812                 $contact = self::contact_entry($repeated_item['author-link'], $owner);
1813
1814                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
1815
1816                 $title = $owner["nick"]." repeated a notice by ".$contact["nick"];
1817
1818                 self::entry_content($doc, $entry, $item, $owner, $title, ACTIVITY_SHARE, false);
1819
1820                 $as_object = $doc->createElement("activity:object");
1821
1822                 xml::add_element($doc, $as_object, "activity:object-type", NAMESPACE_ACTIVITY_SCHEMA."activity");
1823
1824                 self::entry_content($doc, $as_object, $repeated_item, $owner, "", "", false);
1825
1826                 $author = self::add_author($doc, $contact);
1827                 $as_object->appendChild($author);
1828
1829                 $as_object2 = $doc->createElement("activity:object");
1830
1831                 xml::add_element($doc, $as_object2, "activity:object-type", self::construct_objecttype($repeated_item));
1832
1833                 $title = sprintf("New comment by %s", $contact["nick"]);
1834
1835                 self::entry_content($doc, $as_object2, $repeated_item, $owner, $title);
1836
1837                 $as_object->appendChild($as_object2);
1838
1839                 self::entry_footer($doc, $as_object, $item, $owner, false);
1840
1841                 $source = self::source_entry($doc, $contact);
1842
1843                 $as_object->appendChild($source);
1844
1845                 $entry->appendChild($as_object);
1846
1847                 self::entry_footer($doc, $entry, $item, $owner);
1848
1849                 return $entry;
1850         }
1851
1852         /**
1853          * @brief Adds an entry element with a "like"
1854          *
1855          * @param object $doc XML document
1856          * @param array $item Data of the item that is to be posted
1857          * @param array $owner Contact data of the poster
1858          * @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
1859          *
1860          * @return object Entry element with "like"
1861          */
1862         private function like_entry($doc, $item, $owner, $toplevel) {
1863
1864                 if (($item["id"] != $item["parent"]) AND (normalise_link($item["author-link"]) != normalise_link($owner["url"]))) {
1865                         logger("OStatus entry is from author ".$owner["url"]." - not from ".$item["author-link"].". Quitting.", LOGGER_DEBUG);
1866                 }
1867
1868                 $title = self::entry_header($doc, $entry, $owner, $toplevel);
1869
1870                 $verb = NAMESPACE_ACTIVITY_SCHEMA."favorite";
1871                 self::entry_content($doc, $entry, $item, $owner, "Favorite", $verb, false);
1872
1873                 $as_object = $doc->createElement("activity:object");
1874
1875                 $parent = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d",
1876                         dbesc($item["thr-parent"]), intval($item["uid"]));
1877                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
1878
1879                 xml::add_element($doc, $as_object, "activity:object-type", self::construct_objecttype($parent[0]));
1880
1881                 self::entry_content($doc, $as_object, $parent[0], $owner, "New entry");
1882
1883                 $entry->appendChild($as_object);
1884
1885                 self::entry_footer($doc, $entry, $item, $owner);
1886
1887                 return $entry;
1888         }
1889
1890         /**
1891          * @brief Adds the person object element to the XML document
1892          *
1893          * @param object $doc XML document
1894          * @param array $owner Contact data of the poster
1895          * @param array $contact Contact data of the target
1896          *
1897          * @return object author element
1898          */
1899         private function add_person_object($doc, $owner, $contact) {
1900
1901                 $object = $doc->createElement("activity:object");
1902                 xml::add_element($doc, $object, "activity:object-type", ACTIVITY_OBJ_PERSON);
1903
1904                 if ($contact['network'] == NETWORK_PHANTOM) {
1905                         xml::add_element($doc, $object, "id", $contact['url']);
1906                         return $object;
1907                 }
1908
1909                 xml::add_element($doc, $object, "id", $contact["alias"]);
1910                 xml::add_element($doc, $object, "title", $contact["nick"]);
1911
1912                 $attributes = array("rel" => "alternate", "type" => "text/html", "href" => $contact["url"]);
1913                 xml::add_element($doc, $object, "link", "", $attributes);
1914
1915                 $attributes = array(
1916                                 "rel" => "avatar",
1917                                 "type" => "image/jpeg", // To-Do?
1918                                 "media:width" => 175,
1919                                 "media:height" => 175,
1920                                 "href" => $contact["photo"]);
1921                 xml::add_element($doc, $object, "link", "", $attributes);
1922
1923                 xml::add_element($doc, $object, "poco:preferredUsername", $contact["nick"]);
1924                 xml::add_element($doc, $object, "poco:displayName", $contact["name"]);
1925
1926                 if (trim($contact["location"]) != "") {
1927                         $element = $doc->createElement("poco:address");
1928                         xml::add_element($doc, $element, "poco:formatted", $contact["location"]);
1929                         $object->appendChild($element);
1930                 }
1931
1932                 return $object;
1933         }
1934
1935         /**
1936          * @brief Adds a follow/unfollow entry element
1937          *
1938          * @param object $doc XML document
1939          * @param array $item Data of the follow/unfollow message
1940          * @param array $owner Contact data of the poster
1941          * @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
1942          *
1943          * @return object Entry element
1944          */
1945         private function follow_entry($doc, $item, $owner, $toplevel) {
1946
1947                 $item["id"] = $item["parent"] = 0;
1948                 $item["created"] = $item["edited"] = date("c");
1949                 $item["private"] = true;
1950
1951                 $contact = Probe::uri($item['follow']);
1952
1953                 if ($contact['alias'] == '') {
1954                         $contact['alias'] = $contact["url"];
1955                 } else {
1956                         $item['follow'] = $contact['alias'];
1957                 }
1958
1959                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s'",
1960                         intval($owner['uid']), dbesc(normalise_link($contact["url"])));
1961
1962                 if (dbm::is_result($r)) {
1963                         $connect_id = $r[0]['id'];
1964                 } else {
1965                         $connect_id = 0;
1966                 }
1967
1968                 if ($item['verb'] == ACTIVITY_FOLLOW) {
1969                         $message = t('%s is now following %s.');
1970                         $title = t('following');
1971                         $action = "subscription";
1972                 } else {
1973                         $message = t('%s stopped following %s.');
1974                         $title = t('stopped following');
1975                         $action = "unfollow";
1976                 }
1977
1978                 $item["uri"] = $item['parent-uri'] = $item['thr-parent'] =
1979                                 'tag:'.get_app()->get_hostname().
1980                                 ','.date('Y-m-d').':'.$action.':'.$owner['uid'].
1981                                 ':person:'.$connect_id.':'.$item['created'];
1982
1983                 $item["body"] = sprintf($message, $owner["nick"], $contact["nick"]);
1984
1985                 self::entry_header($doc, $entry, $owner, $toplevel);
1986
1987                 self::entry_content($doc, $entry, $item, $owner, $title);
1988
1989                 $object = self::add_person_object($doc, $owner, $contact);
1990                 $entry->appendChild($object);
1991
1992                 self::entry_footer($doc, $entry, $item, $owner);
1993
1994                 return $entry;
1995         }
1996
1997         /**
1998          * @brief Adds a regular entry element
1999          *
2000          * @param object $doc XML document
2001          * @param array $item Data of the item that is to be posted
2002          * @param array $owner Contact data of the poster
2003          * @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
2004          *
2005          * @return object Entry element
2006          */
2007         private function note_entry($doc, $item, $owner, $toplevel) {
2008
2009                 if (($item["id"] != $item["parent"]) AND (normalise_link($item["author-link"]) != normalise_link($owner["url"]))) {
2010                         logger("OStatus entry is from author ".$owner["url"]." - not from ".$item["author-link"].". Quitting.", LOGGER_DEBUG);
2011                 }
2012
2013                 $title = self::entry_header($doc, $entry, $owner, $toplevel);
2014
2015                 xml::add_element($doc, $entry, "activity:object-type", ACTIVITY_OBJ_NOTE);
2016
2017                 self::entry_content($doc, $entry, $item, $owner, $title);
2018
2019                 self::entry_footer($doc, $entry, $item, $owner);
2020
2021                 return $entry;
2022         }
2023
2024         /**
2025          * @brief Adds a header element to the XML document
2026          *
2027          * @param object $doc XML document
2028          * @param object $entry The entry element where the elements are added
2029          * @param array $owner Contact data of the poster
2030          * @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
2031          *
2032          * @return string The title for the element
2033          */
2034         private function entry_header($doc, &$entry, $owner, $toplevel) {
2035                 /// @todo Check if this title stuff is really needed (I guess not)
2036                 if (!$toplevel) {
2037                         $entry = $doc->createElement("entry");
2038                         $title = sprintf("New note by %s", $owner["nick"]);
2039                 } else {
2040                         $entry = $doc->createElementNS(NAMESPACE_ATOM1, "entry");
2041
2042                         $entry->setAttribute("xmlns:thr", NAMESPACE_THREAD);
2043                         $entry->setAttribute("xmlns:georss", NAMESPACE_GEORSS);
2044                         $entry->setAttribute("xmlns:activity", NAMESPACE_ACTIVITY);
2045                         $entry->setAttribute("xmlns:media", NAMESPACE_MEDIA);
2046                         $entry->setAttribute("xmlns:poco", NAMESPACE_POCO);
2047                         $entry->setAttribute("xmlns:ostatus", NAMESPACE_OSTATUS);
2048                         $entry->setAttribute("xmlns:statusnet", NAMESPACE_STATUSNET);
2049                         $entry->setAttribute("xmlns:mastodon", NAMESPACE_MASTODON);
2050
2051                         $author = self::add_author($doc, $owner);
2052                         $entry->appendChild($author);
2053
2054                         $title = sprintf("New comment by %s", $owner["nick"]);
2055                 }
2056                 return $title;
2057         }
2058
2059         /**
2060          * @brief Adds elements to the XML document
2061          *
2062          * @param object $doc XML document
2063          * @param object $entry Entry element where the content is added
2064          * @param array $item Data of the item that is to be posted
2065          * @param array $owner Contact data of the poster
2066          * @param string $title Title for the post
2067          * @param string $verb The activity verb
2068          * @param bool $complete Add the "status_net" element?
2069          */
2070         private function entry_content($doc, $entry, $item, $owner, $title, $verb = "", $complete = true) {
2071
2072                 if ($verb == "")
2073                         $verb = self::construct_verb($item);
2074
2075                 xml::add_element($doc, $entry, "id", $item["uri"]);
2076                 xml::add_element($doc, $entry, "title", $title);
2077
2078                 $body = self::format_picture_post($item['body']);
2079
2080                 if ($item['title'] != "")
2081                         $body = "[b]".$item['title']."[/b]\n\n".$body;
2082
2083                 $body = bbcode($body, false, false, 7);
2084
2085                 xml::add_element($doc, $entry, "content", $body, array("type" => "html"));
2086
2087                 xml::add_element($doc, $entry, "link", "", array("rel" => "alternate", "type" => "text/html",
2088                                                                 "href" => App::get_baseurl()."/display/".$item["guid"]));
2089
2090                 if ($complete AND ($item["id"] > 0))
2091                         xml::add_element($doc, $entry, "status_net", "", array("notice_id" => $item["id"]));
2092
2093                 xml::add_element($doc, $entry, "activity:verb", $verb);
2094
2095                 xml::add_element($doc, $entry, "published", datetime_convert("UTC","UTC",$item["created"]."+00:00",ATOM_TIME));
2096                 xml::add_element($doc, $entry, "updated", datetime_convert("UTC","UTC",$item["edited"]."+00:00",ATOM_TIME));
2097         }
2098
2099         /**
2100          * @brief Adds the elements at the foot of an entry to the XML document
2101          *
2102          * @param object $doc XML document
2103          * @param object $entry The entry element where the elements are added
2104          * @param array $item Data of the item that is to be posted
2105          * @param array $owner Contact data of the poster
2106          * @param $complete
2107          */
2108         private function entry_footer($doc, $entry, $item, $owner, $complete = true) {
2109
2110                 $mentioned = array();
2111
2112                 if (($item['parent'] != $item['id']) OR ($item['parent-uri'] !== $item['uri']) OR (($item['thr-parent'] !== '') AND ($item['thr-parent'] !== $item['uri']))) {
2113                         $parent = q("SELECT `guid`, `author-link`, `owner-link` FROM `item` WHERE `id` = %d", intval($item["parent"]));
2114                         $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
2115
2116                         $thrparent = q("SELECT `guid`, `author-link`, `owner-link`, `plink` FROM `item` WHERE `uid` = %d AND `uri` = '%s'",
2117                                         intval($owner["uid"]),
2118                                         dbesc($parent_item));
2119                         if ($thrparent) {
2120                                 $mentioned[$thrparent[0]["author-link"]] = $thrparent[0]["author-link"];
2121                                 $mentioned[$thrparent[0]["owner-link"]] = $thrparent[0]["owner-link"];
2122                                 $parent_plink = $thrparent[0]["plink"];
2123                         } else {
2124                                 $mentioned[$parent[0]["author-link"]] = $parent[0]["author-link"];
2125                                 $mentioned[$parent[0]["owner-link"]] = $parent[0]["owner-link"];
2126                                 $parent_plink = App::get_baseurl()."/display/".$parent[0]["guid"];
2127                         }
2128
2129                         $attributes = array(
2130                                         "ref" => $parent_item,
2131                                         "href" => $parent_plink);
2132                         xml::add_element($doc, $entry, "thr:in-reply-to", "", $attributes);
2133
2134                         $attributes = array(
2135                                         "rel" => "related",
2136                                         "href" => $parent_plink);
2137                         xml::add_element($doc, $entry, "link", "", $attributes);
2138                 }
2139
2140                 if (intval($item["parent"]) > 0) {
2141                         $conversation_href = App::get_baseurl()."/display/".$owner["nick"]."/".$item["parent"];
2142                         $conversation_uri = $conversation_href;
2143
2144                         if (isset($parent_item)) {
2145                                 $r = dba::fetch_first("SELECT `conversation-uri`, `conversation-href` FROM `conversation` WHERE `item-uri` = ?", $parent_item);
2146                                 if (dbm::is_result($r)) {
2147                                         if ($r['conversation-uri'] != '') {
2148                                                 $conversation_uri = $r['conversation-uri'];
2149                                         }
2150                                         if ($r['conversation-href'] != '') {
2151                                                 $conversation_href = $r['conversation-href'];
2152                                         }
2153                                 }
2154                         }
2155
2156                         xml::add_element($doc, $entry, "link", "", array("rel" => "ostatus:conversation", "href" => $conversation_href));
2157
2158                         $attributes = array(
2159                                         "href" => $conversation_href,
2160                                         "local_id" => $item["parent"],
2161                                         "ref" => $conversation_uri);
2162
2163                         xml::add_element($doc, $entry, "ostatus:conversation", $conversation_uri, $attributes);
2164                 }
2165
2166                 $tags = item_getfeedtags($item);
2167
2168                 if(count($tags))
2169                         foreach($tags as $t)
2170                                 if ($t[0] == "@")
2171                                         $mentioned[$t[1]] = $t[1];
2172
2173                 // Make sure that mentions are accepted (GNU Social has problems with mixing HTTP and HTTPS)
2174                 $newmentions = array();
2175                 foreach ($mentioned AS $mention) {
2176                         $newmentions[str_replace("http://", "https://", $mention)] = str_replace("http://", "https://", $mention);
2177                         $newmentions[str_replace("https://", "http://", $mention)] = str_replace("https://", "http://", $mention);
2178                 }
2179                 $mentioned = $newmentions;
2180
2181                 foreach ($mentioned AS $mention) {
2182                         $r = q("SELECT `forum`, `prv` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s'",
2183                                 intval($owner["uid"]),
2184                                 dbesc(normalise_link($mention)));
2185                         if ($r[0]["forum"] OR $r[0]["prv"])
2186                                 xml::add_element($doc, $entry, "link", "", array("rel" => "mentioned",
2187                                                                                         "ostatus:object-type" => ACTIVITY_OBJ_GROUP,
2188                                                                                         "href" => $mention));
2189                         else
2190                                 xml::add_element($doc, $entry, "link", "", array("rel" => "mentioned",
2191                                                                                         "ostatus:object-type" => ACTIVITY_OBJ_PERSON,
2192                                                                                         "href" => $mention));
2193                 }
2194
2195                 if (!$item["private"]) {
2196                         xml::add_element($doc, $entry, "link", "", array("rel" => "ostatus:attention",
2197                                                                         "href" => "http://activityschema.org/collection/public"));
2198                         xml::add_element($doc, $entry, "link", "", array("rel" => "mentioned",
2199                                                                         "ostatus:object-type" => "http://activitystrea.ms/schema/1.0/collection",
2200                                                                         "href" => "http://activityschema.org/collection/public"));
2201                         xml::add_element($doc, $entry, "mastodon:scope", "public");
2202                 }
2203
2204                 if(count($tags))
2205                         foreach($tags as $t)
2206                                 if ($t[0] != "@")
2207                                         xml::add_element($doc, $entry, "category", "", array("term" => $t[2]));
2208
2209                 self::get_attachment($doc, $entry, $item);
2210
2211                 if ($complete AND ($item["id"] > 0)) {
2212                         $app = $item["app"];
2213                         if ($app == "")
2214                                 $app = "web";
2215
2216                         $attributes = array("local_id" => $item["id"], "source" => $app);
2217
2218                         if (isset($parent["id"]))
2219                                 $attributes["repeat_of"] = $parent["id"];
2220
2221                         if ($item["coord"] != "")
2222                                 xml::add_element($doc, $entry, "georss:point", $item["coord"]);
2223
2224                         xml::add_element($doc, $entry, "statusnet:notice_info", "", $attributes);
2225                 }
2226         }
2227
2228         /**
2229          * @brief Creates the XML feed for a given nickname
2230          *
2231          * @param app $a The application class
2232          * @param string $owner_nick Nickname of the feed owner
2233          * @param string $last_update Date of the last update
2234          *
2235          * @return string XML feed
2236          */
2237         public static function feed(App $a, $owner_nick, $last_update) {
2238
2239                 $r = q("SELECT `contact`.*, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`
2240                                 FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
2241                                 WHERE `contact`.`self` AND `user`.`nickname` = '%s' LIMIT 1",
2242                                 dbesc($owner_nick));
2243                 if (!$r)
2244                         return;
2245
2246                 $owner = $r[0];
2247
2248                 if(!strlen($last_update))
2249                         $last_update = 'now -30 days';
2250
2251                 $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
2252                 $authorid = get_contact($owner["url"], 0);
2253
2254                 $items = q("SELECT `item`.*, `item`.`id` AS `item_id` FROM `item` USE INDEX (`uid_contactid_created`)
2255                                 STRAIGHT_JOIN `thread` ON `thread`.`iid` = `item`.`parent`
2256                                 WHERE `item`.`uid` = %d AND `item`.`contact-id` = %d AND
2257                                         `item`.`author-id` = %d AND `item`.`created` > '%s' AND
2258                                         NOT `item`.`deleted` AND NOT `item`.`private` AND
2259                                         `thread`.`network` IN ('%s', '%s')
2260                                 ORDER BY `item`.`created` DESC LIMIT 300",
2261                                 intval($owner["uid"]), intval($owner["id"]),
2262                                 intval($authorid), dbesc($check_date),
2263                                 dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN));
2264
2265 /*              2016-10-23: The old query will be kept until we are sure that the query above is a good and fast replacement
2266
2267                 $items = q("SELECT `item`.*, `item`.`id` AS `item_id` FROM `item`
2268                                 STRAIGHT_JOIN `thread` ON `thread`.`iid` = `item`.`parent`
2269                                 LEFT JOIN `item` AS `thritem` ON `thritem`.`uri`=`item`.`thr-parent` AND `thritem`.`uid`=`item`.`uid`
2270                                 WHERE `item`.`uid` = %d AND `item`.`received` > '%s' AND NOT `item`.`private` AND NOT `item`.`deleted`
2271                                         AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = '' AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
2272                                         AND ((`item`.`wall` AND (`item`.`parent` = `item`.`id`))
2273                                                 OR (`item`.`network` = '%s' AND ((`thread`.`network` IN ('%s', '%s')) OR (`thritem`.`network` IN ('%s', '%s')))) AND `thread`.`mention`)
2274                                         AND ((`item`.`owner-link` IN ('%s', '%s') AND (`item`.`parent` = `item`.`id`))
2275                                                 OR (`item`.`author-link` IN ('%s', '%s')))
2276                                 ORDER BY `item`.`id` DESC
2277                                 LIMIT 0, 300",
2278                                 intval($owner["uid"]), dbesc($check_date), dbesc(NETWORK_DFRN),
2279                                 //dbesc(NETWORK_OSTATUS), dbesc(NETWORK_OSTATUS),
2280                                 //dbesc(NETWORK_OSTATUS), dbesc(NETWORK_OSTATUS),
2281                                 dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN),
2282                                 dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN),
2283                                 dbesc($owner["nurl"]), dbesc(str_replace("http://", "https://", $owner["nurl"])),
2284                                 dbesc($owner["nurl"]), dbesc(str_replace("http://", "https://", $owner["nurl"]))
2285                         );
2286 */
2287                 $doc = new DOMDocument('1.0', 'utf-8');
2288                 $doc->formatOutput = true;
2289
2290                 $root = self::add_header($doc, $owner);
2291
2292                 foreach ($items AS $item) {
2293                         if (Config::get('system', 'ostatus_debug')) {
2294                                 $item['body'] .= '🍼';
2295                         }
2296                         $entry = self::entry($doc, $item, $owner);
2297                         $root->appendChild($entry);
2298                 }
2299
2300                 return(trim($doc->saveXML()));
2301         }
2302
2303         /**
2304          * @brief Creates the XML for a salmon message
2305          *
2306          * @param array $item Data of the item that is to be posted
2307          * @param array $owner Contact data of the poster
2308          *
2309          * @return string XML for the salmon
2310          */
2311         public static function salmon($item,$owner) {
2312
2313                 $doc = new DOMDocument('1.0', 'utf-8');
2314                 $doc->formatOutput = true;
2315
2316                 if (Config::get('system', 'ostatus_debug')) {
2317                         $item['body'] .= '🐟';
2318                 }
2319
2320                 $entry = self::entry($doc, $item, $owner, true);
2321
2322                 $doc->appendChild($entry);
2323
2324                 return(trim($doc->saveXML()));
2325         }
2326 }
2327 ?>