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/*
* Copyright 2015, Mozilla Foundation and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "BigEndian.h"
#include "ClearKeyDecryptionManager.h"
#include "ClearKeySession.h"
#include "ClearKeyUtils.h"
#include "ClearKeyStorage.h"
#include "psshparser/PsshParser.h"
#include "gmp-task-utils.h"
#include "gmp-api/gmp-decryption.h"
#include <assert.h>
#include <string.h>
using namespace mozilla;
ClearKeySession::ClearKeySession(const std::string& aSessionId,
GMPDecryptorCallback* aCallback,
GMPSessionType aSessionType)
: mSessionId(aSessionId)
, mCallback(aCallback)
, mSessionType(aSessionType)
{
CK_LOGD("ClearKeySession ctor %p", this);
}
ClearKeySession::~ClearKeySession()
{
CK_LOGD("ClearKeySession dtor %p", this);
std::vector<GMPMediaKeyInfo> key_infos;
for (const KeyId& keyId : mKeyIds) {
assert(ClearKeyDecryptionManager::Get()->HasSeenKeyId(keyId));
ClearKeyDecryptionManager::Get()->ReleaseKeyId(keyId);
key_infos.push_back(GMPMediaKeyInfo(&keyId[0], keyId.size(), kGMPUnknown));
}
mCallback->BatchedKeyStatusChanged(&mSessionId[0], mSessionId.size(),
key_infos.data(), key_infos.size());
}
void
ClearKeySession::Init(uint32_t aCreateSessionToken,
uint32_t aPromiseId,
const std::string& aInitDataType,
const uint8_t* aInitData, uint32_t aInitDataSize)
{
CK_LOGD("ClearKeySession::Init");
if (aInitDataType == "cenc") {
ParseCENCInitData(aInitData, aInitDataSize, mKeyIds);
} else if (aInitDataType == "keyids") {
ClearKeyUtils::ParseKeyIdsInitData(aInitData, aInitDataSize, mKeyIds);
} else if (aInitDataType == "webm" && aInitDataSize <= kMaxWebmInitDataSize) {
// "webm" initData format is simply the raw bytes of the keyId.
vector<uint8_t> keyId;
keyId.assign(aInitData, aInitData+aInitDataSize);
mKeyIds.push_back(keyId);
}
if (!mKeyIds.size()) {
const char message[] = "Couldn't parse init data";
mCallback->RejectPromise(aPromiseId, kGMPTypeError, message, strlen(message));
return;
}
mCallback->SetSessionId(aCreateSessionToken, &mSessionId[0], mSessionId.length());
mCallback->ResolvePromise(aPromiseId);
}
GMPSessionType
ClearKeySession::Type() const
{
return mSessionType;
}
void
ClearKeySession::AddKeyId(const KeyId& aKeyId)
{
mKeyIds.push_back(aKeyId);
}
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