Fix proper types

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

lib/private/AppFramework/Http/Request.php

@@ -678,7 +678,11 @@ class Request implements \ArrayAccess, \Countable, IRequest {
 	 * @return string HTTP protocol. HTTP/2, HTTP/1.1 or HTTP/1.0.
 	 */
 	public function getHttpProtocol(): string {
-		$claimedProtocol = strtoupper($this->server['SERVER_PROTOCOL']);
+		$claimedProtocol = $this->server['SERVER_PROTOCOL'];
+
+		if (\is_string($claimedProtocol)) {
+			$claimedProtocol = strtoupper($claimedProtocol);
+		}
 
 		$validProtocols = [
 			'HTTP/1.0',
@@ -738,10 +742,14 @@ class Request implements \ArrayAccess, \Countable, IRequest {
 				throw new \Exception("The requested uri($requestUri) cannot be processed by the script '$scriptName')");
 			}
 		}
+		if ($name === null) {
+			$name = '';
+		}
+
 		if (strpos($pathInfo, '/'.$name) === 0) {
 			$pathInfo = substr($pathInfo, \strlen($name) + 1);
 		}
-		if (strpos($pathInfo, $name) === 0) {
+		if ($name !== '' && strpos($pathInfo, $name) === 0) {
 			$pathInfo = substr($pathInfo, \strlen($name));
 		}
 		if($pathInfo === false || $pathInfo === '/'){

lib/private/Server.php

@@ -814,7 +814,7 @@ class Server extends ServerContainer implements IServerContainer {
 					'cookies' => $_COOKIE,
 					'method' => (isset($_SERVER) && isset($_SERVER['REQUEST_METHOD']))
 						? $_SERVER['REQUEST_METHOD']
-						: null,
+						: '',
 					'urlParams' => $urlParams,
 				],
 				$this->getSecureRandom(),

tests/lib/AppFramework/Http/RequestTest.php

@@ -307,7 +307,7 @@ class RequestTest extends \Test\TestCase {
 			'method' => 'PUT',
 			'server' => [
 				'CONTENT_TYPE' => 'image/png',
-				'CONTENT_LENGTH' => strlen($data)
+				'CONTENT_LENGTH' => (string)strlen($data)
 			],
 		);