dom/prio/PrioEncoder.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_PrioEncoder_h
   8 #define mozilla_dom_PrioEncoder_h
   9
  10 #include "mozilla/dom/PrioEncoderBinding.h"
  11 #include "mozilla/dom/RootedDictionary.h"
  12
  13 class nsIGlobalObject;
  14 using SECKEYPublicKey = struct SECKEYPublicKeyStr;
  15 using PublicKey = SECKEYPublicKey*;
  16
  17 namespace mozilla {
  18 namespace dom {
  19
  20 class PrioEncoder {
  21  public:
  22   NS_INLINE_DECL_REFCOUNTING(PrioEncoder)
  23
  24   // C++ API
  25   static nsresult EncodeNative(const nsCString& aBatchID,
  26                                const nsTArray<bool>& aData, nsCString& aResult,
  27                                nsCString& bResult);
  28
  29   // DOM API
  30   static void Encode(GlobalObject& aGlobal, const nsCString& aBatchID,
  31                      const PrioParams& aPrioParams,
  32                      RootedDictionary<PrioEncodedData>& aData,
  33                      ErrorResult& aRv);
  34
  35   // maximum number of booleans that can be prio-encoded in a single batch.
  36   const static uint32_t gNumBooleans = 2046;
  37
  38   // Set (or, by passing nullptrs, reset) the keys used to encode the payloads.
  39   static nsresult SetKeys(const char* aKeyA = nullptr,
  40                           const char* aKeyB = nullptr);
  41
  42  private:
  43   PrioEncoder();
  44   ~PrioEncoder();
  45
  46   static PublicKey sPublicKeyA;
  47
  48   static PublicKey sPublicKeyB;
  49
  50   static StaticRefPtr<PrioEncoder> sSingleton;
  51
  52   static bool IsValidHexPublicKey(mozilla::Span<const char>);
  53
  54   static nsresult LazyInitSingleton();
  55 };
  56
  57 }  // namespace dom
  58 }  // namespace mozilla
  59
  60 #endif  // mozilla_dom_PrioEncoder_h