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