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-rw-r--r--netwerk/cache2/CacheHashUtils.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/netwerk/cache2/CacheHashUtils.h b/netwerk/cache2/CacheHashUtils.h
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+++ b/netwerk/cache2/CacheHashUtils.h
@@ -0,0 +1,69 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef CacheHashUtils__h__
+#define CacheHashUtils__h__
+
+#include "nsISupports.h"
+#include "mozilla/Types.h"
+#include "prnetdb.h"
+#include "nsPrintfCString.h"
+
+#define LOGSHA1(x) \
+ PR_htonl((reinterpret_cast<const uint32_t*>(x))[0]), \
+ PR_htonl((reinterpret_cast<const uint32_t*>(x))[1]), \
+ PR_htonl((reinterpret_cast<const uint32_t*>(x))[2]), \
+ PR_htonl((reinterpret_cast<const uint32_t*>(x))[3]), \
+ PR_htonl((reinterpret_cast<const uint32_t*>(x))[4])
+
+#define SHA1STRING(x) \
+ (nsPrintfCString("%08x%08x%08x%08x%08x", LOGSHA1(x)).get())
+
+namespace mozilla {
+
+class OriginAttributes;
+
+namespace net {
+
+class CacheHash : public nsISupports {
+ public:
+ NS_DECL_THREADSAFE_ISUPPORTS
+
+ using Hash16_t = uint16_t;
+ using Hash32_t = uint32_t;
+
+ static Hash32_t Hash(const char* aData, uint32_t aSize,
+ uint32_t aInitval = 0);
+ static Hash16_t Hash16(const char* aData, uint32_t aSize,
+ uint32_t aInitval = 0);
+
+ explicit CacheHash(uint32_t aInitval = 0);
+
+ void Update(const char* aData, uint32_t aLen);
+ Hash32_t GetHash();
+ Hash16_t GetHash16();
+
+ private:
+ virtual ~CacheHash() = default;
+
+ void Feed(uint32_t aVal, uint8_t aLen = 4);
+
+ static const uint32_t kGoldenRation = 0x9e3779b9;
+
+ uint32_t mA{kGoldenRation}, mB{kGoldenRation}, mC;
+ uint8_t mPos{0};
+ uint32_t mBuf{0};
+ uint8_t mBufPos{0};
+ uint32_t mLength{0};
+ bool mFinalized{false};
+};
+
+using OriginAttrsHash = uint64_t;
+
+OriginAttrsHash GetOriginAttrsHash(const mozilla::OriginAttributes& aOA);
+
+} // namespace net
+} // namespace mozilla
+
+#endif