include/ostatus.php

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