1 files changed, 44 insertions, 0 deletions
diff --git a/libs/jsonrpc/src/JsonRPC/Validator/JsonEncodingValidator.php b/libs/jsonrpc/src/JsonRPC/Validator/JsonEncodingValidator.php
new file mode 100644
index 00000000..0bbc4abd
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Validator/JsonEncodingValidator.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace JsonRPC\Validator;
+
+use JsonRPC\Exception\ResponseEncodingFailureException;
+
+/**
+ * Class JsonEncodingValidator
+ *
+ * @package JsonRPC\Validator
+ * @author  Frederic Guillot
+ */
+class JsonEncodingValidator
+{
+    public static function validate()
+    {
+        $jsonError = json_last_error();
+
+        if ($jsonError !== JSON_ERROR_NONE) {
+            switch ($jsonError) {
+                case JSON_ERROR_DEPTH:
+                    $errorMessage = 'Maximum stack depth exceeded';
+                    break;
+                case JSON_ERROR_STATE_MISMATCH:
+                    $errorMessage = 'Underflow or the modes mismatch';
+                    break;
+                case JSON_ERROR_CTRL_CHAR:
+                    $errorMessage = 'Unexpected control character found';
+                    break;
+                case JSON_ERROR_SYNTAX:
+                    $errorMessage = 'Syntax error, malformed JSON';
+                    break;
+                case JSON_ERROR_UTF8:
+                    $errorMessage = 'Malformed UTF-8 characters, possibly incorrectly encoded';
+                    break;
+                default:
+                    $errorMessage = 'Unknown error';
+                    break;
+            }
+
+            throw new ResponseEncodingFailureException($errorMessage, $jsonError);
+        }
+    }
+}