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\Core\System;
   8 use Friendica\DI;
   9 use Friendica\Model\Item;
  10 use Friendica\Model\User;
  11 use Friendica\Network\HTTPException;
  12 use Friendica\Protocol\Diaspora;
  13 use Friendica\Util\Strings;
  14
  15 /**
  16  * This module is part of the Diaspora protocol.
  17  * It is used for fetching single public posts.
  18  */
  19 class Fetch extends BaseModule
  20 {
  21         public static function rawContent(array $parameters = [])
  22         {
  23                 $app = DI::app();
  24
  25                 // @TODO: Replace with parameter from router
  26                 if (($app->argc != 3) || (!in_array($app->argv[1], ["post", "status_message", "reshare"]))) {
  27                         throw new HTTPException\NotFoundException();
  28                 }
  29
  30                 // @TODO: Replace with parameter from router
  31                 $guid = $app->argv[2];
  32
  33                 // Fetch the item
  34                 $fields = [
  35                         'uid', 'title', 'body', 'guid', 'contact-id', 'private', 'created', 'received', 'app', 'location', 'coord', 'network',
  36                         'event-id', 'resource-id', 'author-link', 'author-avatar', 'author-name', 'plink', 'owner-link', 'attach'
  37                 ];
  38                 $condition = ['wall' => true, 'private' => false, 'guid' => $guid, 'network' => [Protocol::DFRN, Protocol::DIASPORA]];
  39                 $item = Item::selectFirst($fields, $condition);
  40                 if (empty($item)) {
  41                         $condition = ['guid' => $guid, 'network' => [Protocol::DFRN, Protocol::DIASPORA]];
  42                         $item = Item::selectFirst(['author-link'], $condition);
  43                         if (empty($item)) {
  44                                 $parts = parse_url($item["author-link"]);
  45                                 if (empty($parts["scheme"]) || empty($parts["host"])) {
  46                                         throw new HTTPException\InternalServerErrorException();
  47                                 }
  48                                 $host = $parts["scheme"] . "://" . $parts["host"];
  49
  50                                 if (Strings::normaliseLink($host) != Strings::normaliseLink(DI::baseUrl()->get())) {
  51                                         $location = $host . "/fetch/" . $app->argv[1] . "/" . urlencode($guid);
  52                                         System::externalRedirect($location, 301);
  53                                 }
  54                         }
  55
  56                         throw new HTTPException\NotFoundException();
  57                 }
  58
  59                 // Fetch some data from the author (We could combine both queries - but I think this is more readable)
  60                 $user = User::getOwnerDataById($item["uid"]);
  61                 if (!$user) {
  62                         throw new HTTPException\NotFoundException();
  63                 }
  64
  65                 $status = Diaspora::buildStatus($item, $user);
  66                 $xml = Diaspora::buildPostXml($status["type"], $status["message"]);
  67
  68                 // Send the envelope
  69                 header("Content-Type: application/magic-envelope+xml; charset=utf-8");
  70                 echo Diaspora::buildMagicEnvelope($xml, $user);
  71
  72                 exit();
  73         }
  74 }