michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef CacheHashUtils__h__
michael@0: #define CacheHashUtils__h__
michael@0: 
michael@0: #include "nsISupports.h"
michael@0: #include "mozilla/Types.h"
michael@0: #include "prnetdb.h"
michael@0: #include "nsPrintfCString.h"
michael@0: 
michael@0: #define LOGSHA1(x) \
michael@0:     PR_htonl((reinterpret_cast<const uint32_t *>(x))[0]), \
michael@0:     PR_htonl((reinterpret_cast<const uint32_t *>(x))[1]), \
michael@0:     PR_htonl((reinterpret_cast<const uint32_t *>(x))[2]), \
michael@0:     PR_htonl((reinterpret_cast<const uint32_t *>(x))[3]), \
michael@0:     PR_htonl((reinterpret_cast<const uint32_t *>(x))[4])
michael@0: 
michael@0: #define SHA1STRING(x) \
michael@0:     (nsPrintfCString("%08x%08x%08x%08x%08x", LOGSHA1(x)).get())
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace net {
michael@0: 
michael@0: class CacheHash : public nsISupports
michael@0: {
michael@0: public:
michael@0:   NS_DECL_THREADSAFE_ISUPPORTS
michael@0: 
michael@0:   typedef uint16_t Hash16_t;
michael@0:   typedef uint32_t Hash32_t;
michael@0: 
michael@0:   static Hash32_t Hash(const char* aData, uint32_t aSize, uint32_t aInitval=0);
michael@0:   static Hash16_t Hash16(const char* aData, uint32_t aSize,
michael@0:                          uint32_t aInitval=0);
michael@0: 
michael@0:   CacheHash(uint32_t aInitval=0);
michael@0: 
michael@0:   void     Update(const char *aData, uint32_t aLen);
michael@0:   Hash32_t GetHash();
michael@0:   Hash16_t GetHash16();
michael@0: 
michael@0: private:
michael@0:   virtual ~CacheHash() {}
michael@0: 
michael@0:   void Feed(uint32_t aVal, uint8_t aLen = 4);
michael@0: 
michael@0:   uint32_t mA, mB, mC;
michael@0:   uint8_t  mPos;
michael@0:   uint32_t mBuf;
michael@0:   uint8_t  mBufPos;
michael@0:   uint32_t mLength;
michael@0:   bool     mFinalized;
michael@0: };
michael@0: 
michael@0: 
michael@0: } // net
michael@0: } // mozilla
michael@0: 
michael@0: #endif