intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 32 insertions, 0 deletions

diff --git a/library/cpp/tvmauth/client/misc/roles/decoder.h b/library/cpp/tvmauth/client/misc/roles/decoder.h
new file mode 100644
index 0000000000..de5cdb37e0
--- /dev/null
+++ b/library/cpp/tvmauth/client/misc/roles/decoder.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <util/generic/string.h>
+
+namespace NTvmAuth::NRoles {
+    class TDecoder {
+    public:
+        static TString Decode(const TStringBuf codec, TString&& blob);
+
+    public:
+        struct TCodecInfo {
+            TStringBuf Type;
+            size_t Size = 0;
+            TStringBuf Sha256;
+
+            bool operator==(const TCodecInfo& o) const {
+                return Type == o.Type &&
+                       Size == o.Size &&
+                       Sha256 == o.Sha256;
+            }
+        };
+
+        static TCodecInfo ParseCodec(TStringBuf codec);
+        static TString DecodeImpl(TStringBuf codec, const TString& blob);
+        static TString DecodeBrolti(const TString& blob);
+        static TString DecodeGzip(const TString& blob);
+        static TString DecodeZstd(const TString& blob);
+
+        static void VerifySize(const TStringBuf decoded, size_t expected);
+        static void VerifyChecksum(const TStringBuf decoded, const TStringBuf expected);
+    };
+}