From fc9401f04a3aca5abb22f87ebc210de8afe11d32 Mon Sep 17 00:00:00 2001
From: marvin-borner@live.com
Date: Tue, 10 Apr 2018 21:50:16 +0200
Subject: Initial Commit

---
 .../rfc6455/src/Handshake/ResponseVerifier.php     | 52 ++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 assets/php/vendor/ratchet/rfc6455/src/Handshake/ResponseVerifier.php

(limited to 'assets/php/vendor/ratchet/rfc6455/src/Handshake/ResponseVerifier.php')

diff --git a/assets/php/vendor/ratchet/rfc6455/src/Handshake/ResponseVerifier.php b/assets/php/vendor/ratchet/rfc6455/src/Handshake/ResponseVerifier.php
new file mode 100644
index 0000000..de03f53
--- /dev/null
+++ b/assets/php/vendor/ratchet/rfc6455/src/Handshake/ResponseVerifier.php
@@ -0,0 +1,52 @@
+<?php
+namespace Ratchet\RFC6455\Handshake;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+class ResponseVerifier {
+    public function verifyAll(RequestInterface $request, ResponseInterface $response) {
+        $passes = 0;
+
+        $passes += (int)$this->verifyStatus($response->getStatusCode());
+        $passes += (int)$this->verifyUpgrade($response->getHeader('Upgrade'));
+        $passes += (int)$this->verifyConnection($response->getHeader('Connection'));
+        $passes += (int)$this->verifySecWebSocketAccept(
+            $response->getHeader('Sec-WebSocket-Accept')
+          , $request->getHeader('Sec-WebSocket-Key')
+        );
+        $passes += (int)$this->verifySubProtocol(
+            $request->getHeader('Sec-WebSocket-Protocol')
+          , $response->getHeader('Sec-WebSocket-Protocol')
+        );
+
+        return (5 === $passes);
+    }
+
+    public function verifyStatus($status) {
+        return ((int)$status === 101);
+    }
+
+    public function verifyUpgrade(array $upgrade) {
+        return (in_array('websocket', array_map('strtolower', $upgrade)));
+    }
+
+    public function verifyConnection(array $connection) {
+        return (in_array('upgrade', array_map('strtolower', $connection)));
+    }
+
+    public function verifySecWebSocketAccept($swa, $key) {
+        return (
+            1 === count($swa) &&
+            1 === count($key) &&
+            $swa[0] === $this->sign($key[0])
+        );
+    }
+
+    public function sign($key) {
+        return base64_encode(sha1($key . NegotiatorInterface::GUID, true));
+    }
+
+    public function verifySubProtocol(array $requestHeader, array $responseHeader) {
+        return 0 === count($responseHeader) || count(array_intersect($responseHeader, $requestHeader)) > 0;
+    }
+}
\ No newline at end of file
-- 
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