media/gmp-clearkey/0.1/ClearKeySession.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "ClearKeyDecryptionManager.h"
   6 #include "ClearKeySession.h"
   7 #include "ClearKeyUtils.h"
   8 #include "ClearKeyStorage.h"
   9 #include "gmp-task-utils.h"
  10
  11 #include "gmp-api/gmp-decryption.h"
  12 #include "mozilla/Endian.h"
  13
  14 using namespace mozilla;
  15
  16 ClearKeySession::ClearKeySession(const std::string& aSessionId,
  17                                  GMPDecryptorCallback* aCallback,
  18                                  GMPSessionType aSessionType)
  19   : mSessionId(aSessionId)
  20   , mCallback(aCallback)
  21   , mSessionType(aSessionType)
  22 {
  23   CK_LOGD("ClearKeySession ctor %p", this);
  24 }
  25
  26 ClearKeySession::~ClearKeySession()
  27 {
  28   CK_LOGD("ClearKeySession dtor %p", this);
  29
  30   auto& keyIds = GetKeyIds();
  31   for (auto it = keyIds.begin(); it != keyIds.end(); it++) {
  32     MOZ_ASSERT(ClearKeyDecryptionManager::Get()->HasKeyForKeyId(*it));
  33
  34     ClearKeyDecryptionManager::Get()->ReleaseKeyId(*it);
  35     mCallback->KeyStatusChanged(&mSessionId[0], mSessionId.size(),
  36                                 &(*it)[0], it->size(),
  37                                 kGMPUnknown);
  38   }
  39 }
  40
  41 void
  42 ClearKeySession::Init(uint32_t aCreateSessionToken,
  43                       uint32_t aPromiseId,
  44                       const uint8_t* aInitData, uint32_t aInitDataSize)
  45 {
  46   CK_LOGD("ClearKeySession::Init");
  47
  48   ClearKeyUtils::ParseInitData(aInitData, aInitDataSize, mKeyIds);
  49   if (!mKeyIds.size()) {
  50     const char message[] = "Couldn't parse cenc key init data";
  51     mCallback->RejectPromise(aPromiseId, kGMPAbortError, message, strlen(message));
  52     return;
  53   }
  54
  55   mCallback->SetSessionId(aCreateSessionToken, &mSessionId[0], mSessionId.length());
  56
  57   mCallback->ResolvePromise(aPromiseId);
  58 }
  59
  60 GMPSessionType
  61 ClearKeySession::Type() const
  62 {
  63   return mSessionType;
  64 }
  65
  66 void
  67 ClearKeySession::AddKeyId(const KeyId& aKeyId)
  68 {
  69   mKeyIds.push_back(aKeyId);
  70 }