1 files changed, 35 insertions, 0 deletions
diff --git a/libs/jsonrpc/src/JsonRPC/Validator/RpcFormatValidator.php b/libs/jsonrpc/src/JsonRPC/Validator/RpcFormatValidator.php
new file mode 100644
index 00000000..f253a5a1
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Validator/RpcFormatValidator.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace JsonRPC\Validator;
+
+use JsonRPC\Exception\InvalidJsonRpcFormatException;
+
+/**
+ * Class RpcFormatValidator
+ *
+ * @package JsonRPC\Validator
+ * @author  Frederic Guillot
+ */
+class RpcFormatValidator
+{
+    /**
+     * Validate
+     *
+     * @static
+     * @access public
+     * @param  array $payload
+     * @throws InvalidJsonRpcFormatException
+     */
+    public static function validate(array $payload)
+    {
+        if (! isset($payload['jsonrpc']) ||
+            ! isset($payload['method']) ||
+            ! is_string($payload['method']) ||
+            $payload['jsonrpc'] !== '2.0' ||
+            (isset($payload['params']) && ! is_array($payload['params']))) {
+
+            throw new InvalidJsonRpcFormatException('Invalid JSON RPC payload');
+        }
+    }
+}
+