src/Module/Diaspora/Fetch.php

   1 <?php
   2
   3 namespace Friendica\Module\Diaspora;
   4
   5 use Friendica\BaseModule;
   6 use Friendica\Core\Protocol;
   7 use Friendica\Model\Item;
   8 use Friendica\Model\User;
   9 use Friendica\Network\HTTPException;
  10 use Friendica\Protocol\Diaspora;
  11 use Friendica\Util\Strings;
  12
  13 /**
  14  * This module is part of the Diaspora protocol.
  15  * It is used for fetching single public posts.
  16  */
  17 class Fetch extends BaseModule
  18 {
  19         public static function rawContent()
  20         {
  21                 $app = self::getApp();
  22
  23                 // @TODO: Replace with parameter from router
  24                 if (($app->argc != 3) || (!in_array($app->argv[1], ["post", "status_message", "reshare"]))) {
  25                         throw new HTTPException\NotFoundException();
  26                 }
  27
  28                 // @TODO: Replace with parameter from router
  29                 $guid = $app->argv[2];
  30
  31                 // Fetch the item
  32                 $fields = [
  33                         'uid', 'title', 'body', 'guid', 'contact-id', 'private', 'created', 'app', 'location', 'coord', 'network',
  34                         'event-id', 'resource-id', 'author-link', 'author-avatar', 'author-name', 'plink', 'owner-link', 'attach'
  35                 ];
  36                 $condition = ['wall' => true, 'private' => false, 'guid' => $guid, 'network' => [Protocol::DFRN, Protocol::DIASPORA]];
  37                 $item = Item::selectFirst($fields, $condition);
  38                 if (empty($item)) {
  39                         $condition = ['guid' => $guid, 'network' => [Protocol::DFRN, Protocol::DIASPORA]];
  40                         $item = Item::selectFirst(['author-link'], $condition);
  41                         if (empty($item)) {
  42                                 $parts = parse_url($item["author-link"]);
  43                                 $host = $parts["scheme"] . "://" . $parts["host"];
  44
  45                                 if (Strings::normaliseLink($host) != Strings::normaliseLink($app->getBaseURL())) {
  46                                         $location = $host . "/fetch/" . $app->argv[1] . "/" . urlencode($guid);
  47
  48                                         header("HTTP/1.1 301 Moved Permanently");
  49                                         header("Location:" . $location);
  50                                         exit();
  51                                 }
  52                         }
  53
  54                         throw new HTTPException\NotFoundException();
  55                 }
  56
  57                 // Fetch some data from the author (We could combine both queries - but I think this is more readable)
  58                 $user = User::getOwnerDataById($item["uid"]);
  59                 if (!$user) {
  60                         throw new HTTPException\NotFoundException();
  61                 }
  62
  63                 $status = Diaspora::buildStatus($item, $user);
  64                 $xml = Diaspora::buildPostXml($status["type"], $status["message"]);
  65
  66                 // Send the envelope
  67                 header("Content-Type: application/magic-envelope+xml; charset=utf-8");
  68                 echo Diaspora::buildMagicEnvelope($xml, $user);
  69
  70                 exit();
  71         }
  72 }