netwerk/cache2/CacheHashUtils.h
author Chris Manchester <cmanchester@mozilla.com>
Wed, 16 Jan 2019 22:46:38 +0000
changeset 514323 471d9fab61b34671f974dfa349e7972c200faa2b
parent 508163 6f3709b3878117466168c40affa7bca0b60cf75b
child 533940 e1993a1f09ac53cd1a04fdf6a87f8cad8e44f73e
permissions -rw-r--r--
Bug 1507631 - Remove mentions of MOZ_SIGN_CMD from the build system. r=nalexander Differential Revision: https://phabricator.services.mozilla.com/D16754

/* 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

  typedef uint16_t Hash16_t;
  typedef uint32_t Hash32_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);

  uint32_t mA, mB, mC;
  uint8_t mPos;
  uint32_t mBuf;
  uint8_t mBufPos;
  uint32_t mLength;
  bool mFinalized;
};

typedef uint64_t OriginAttrsHash;

OriginAttrsHash GetOriginAttrsHash(const mozilla::OriginAttributes &aOA);

}  // namespace net
}  // namespace mozilla

#endif