intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 90 insertions, 0 deletions

diff --git a/contrib/libs/aws-sdk-cpp/aws-cpp-sdk-core/source/utils/UUID.cpp b/contrib/libs/aws-sdk-cpp/aws-cpp-sdk-core/source/utils/UUID.cpp
new file mode 100644
index 0000000000..862f3eacdd
--- /dev/null
+++ b/contrib/libs/aws-sdk-cpp/aws-cpp-sdk-core/source/utils/UUID.cpp
@@ -0,0 +1,90 @@
+/**
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0.
+ */
+
+#include <aws/core/utils/UUID.h>
+#include <aws/core/utils/HashingUtils.h>
+#include <aws/core/utils/StringUtils.h>
+#include <aws/core/utils/crypto/Factories.h>
+#include <aws/core/utils/crypto/SecureRandom.h>
+#include <iomanip>
+
+namespace Aws
+{
+    namespace Utils
+    {
+        static const size_t UUID_STR_SIZE = 0x24u; // 36 characters
+        static const size_t VERSION_LOCATION = 0x06u;
+        static const size_t VARIANT_LOCATION = 0x08u;
+        static const unsigned char VERSION = 0x40u;
+        static const unsigned char VERSION_MASK = 0x0Fu;
+        static const unsigned char VARIANT = 0x80u;
+        static const unsigned char VARIANT_MASK = 0x3Fu;
+
+        static void hexify(Aws::String& ss, const unsigned char* toWrite, size_t min, size_t max)
+        {
+            for (size_t i = min; i < max; ++i)
+            {
+                ss.push_back("0123456789ABCDEF"[toWrite[i] >> 4]);
+                ss.push_back("0123456789ABCDEF"[toWrite[i] & 0x0F]);
+            }
+        }
+
+        UUID::UUID(const Aws::String& uuidToConvert)
+        {
+            //GUID has 2 characters per byte + 4 dashes = 36 bytes
+            assert(uuidToConvert.length() == UUID_STR_SIZE);
+            memset(m_uuid, 0, sizeof(m_uuid));
+            Aws::String escapedHexStr(uuidToConvert);
+            StringUtils::Replace(escapedHexStr, "-", "");
+            assert(escapedHexStr.length() == UUID_BINARY_SIZE * 2);
+            ByteBuffer&& rawUuid = HashingUtils::HexDecode(escapedHexStr);
+            memcpy(m_uuid, rawUuid.GetUnderlyingData(), rawUuid.GetLength());
+        }
+
+        UUID::UUID(const unsigned char toCopy[UUID_BINARY_SIZE])
+        {
+            memcpy(m_uuid, toCopy, sizeof(m_uuid));
+        }
+
+        UUID::operator Aws::String() const
+        {
+            Aws::String ss;
+            ss.reserve(UUID_STR_SIZE);
+            hexify(ss, m_uuid, 0, 4);
+            ss.push_back('-');
+
+            hexify(ss, m_uuid, 4, 6);
+            ss.push_back('-');
+
+            hexify(ss, m_uuid, 6, 8);
+            ss.push_back('-');
+
+            hexify(ss, m_uuid, 8, 10);
+            ss.push_back('-');
+
+            hexify(ss, m_uuid, 10, 16);
+
+            return ss;
+        }
+
+        UUID UUID::RandomUUID()
+        {
+            auto secureRandom = Crypto::CreateSecureRandomBytesImplementation();
+            assert(secureRandom);
+
+            unsigned char randomBytes[UUID_BINARY_SIZE];
+            memset(randomBytes, 0, UUID_BINARY_SIZE);
+            secureRandom->GetBytes(randomBytes, UUID_BINARY_SIZE);
+            //Set version bits to 0100
+            //https://tools.ietf.org/html/rfc4122#section-4.1.3
+            randomBytes[VERSION_LOCATION] = (randomBytes[VERSION_LOCATION] & VERSION_MASK) | VERSION;
+            //set variant bits to 10
+            //https://tools.ietf.org/html/rfc4122#section-4.1.1
+            randomBytes[VARIANT_LOCATION] = (randomBytes[VARIANT_LOCATION] & VARIANT_MASK) | VARIANT;
+
+            return UUID(randomBytes);
+        }
+    }
+}