X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;ds=sidebyside;f=src%2FModule%2FXrd.php;h=3267e9e9a24bbeecb6daa7d92754a29687c3bf7d;hb=706444bdb22b57f18c284044bdbdaeb7610990fe;hp=098d69e23cb2b579879977f5b97bbf585470c666;hpb=f0c29edcde0ab15150147a3ebae40ca628197fde;p=friendica.git

diff --git a/src/Module/Xrd.php b/src/Module/Xrd.php
index 098d69e23c..3267e9e9a2 100644
--- a/src/Module/Xrd.php
+++ b/src/Module/Xrd.php
@@ -65,15 +65,23 @@ class Xrd extends BaseModule
 
 		if (substr($uri, 0, 4) === 'http') {
 			$name = ltrim(basename($uri), '~');
+			$host = parse_url($uri, PHP_URL_HOST);
 		} else {
 			$local = str_replace('acct:', '', $uri);
 			if (substr($local, 0, 2) == '//') {
 				$local = substr($local, 2);
 			}
 
-			$name = substr($local, 0, strpos($local, '@'));
+			list($name, $host) = explode('@', $local);
 		}
 
+		if (!empty($host) && $host !== DI::baseUrl()->getHost()) {
+			DI::logger()->notice('Invalid host name for xrd query',['host' => $host, 'uri' => $uri]);
+			throw new NotFoundException('Invalid host name for xrd query: ' . $host);
+		}
+
+		header('Vary: Accept', false);
+
 		if ($name == User::getActorName()) {
 			$owner = User::getSystemAccount();
 			if (empty($owner)) {
@@ -105,7 +113,7 @@ class Xrd extends BaseModule
 
 	private function printSystemJSON(array $owner)
 	{
-		$baseURL = $this->baseUrl;
+		$baseURL = (string)$this->baseUrl;
 		$json = [
 			'subject' => 'acct:' . $owner['addr'],
 			'aliases' => [$owner['url']],
@@ -151,7 +159,7 @@ class Xrd extends BaseModule
 
 	private function printJSON(string $alias, array $owner, array $avatar)
 	{
-		$baseURL = $this->baseUrl;
+		$baseURL = (string)$this->baseUrl;
 
 		$json = [
 			'subject' => 'acct:' . $owner['addr'],
@@ -228,7 +236,7 @@ class Xrd extends BaseModule
 
 	private function printXML(string $alias, array $owner, array $avatar)
 	{
-		$baseURL = $this->baseUrl;
+		$baseURL = (string)$this->baseUrl;
 
 		$xmlString = XML::fromArray([
 			'XRD' => [
@@ -320,7 +328,6 @@ class Xrd extends BaseModule
 		]);
 
 		header('Access-Control-Allow-Origin: *');
-
 		System::httpExit($xmlString, Response::TYPE_XML, 'application/xrd+xml');
 	}
 }