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