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Bug 1075199 - Separate session management from ClearKeyDecryptionManager - r=cpearce
--HG-- rename : media/gmp-clearkey/0.1/ClearKeyDecryptionManager.cpp => media/gmp-clearkey/0.1/ClearKeySessionManager.cpp
This commit is contained in:
Edwin Flores
parent
9ef0e5680a
commit
1f04f15482
@ -2,471 +2,164 @@
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <vector>
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#include "ClearKeyDecryptionManager.h"
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#include "ClearKeyUtils.h"
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#include "ClearKeyStorage.h"
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#include "ClearKeyPersistence.h"
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#include "gmp-task-utils.h"
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#include "gmp-decryption.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/Attributes.h"
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using namespace mozilla;
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using namespace std;
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class ClearKeyDecryptor
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class ClearKeyDecryptor : public RefCounted
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{
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public:
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ClearKeyDecryptor(GMPDecryptorCallback* aCallback, const Key& aKey);
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~ClearKeyDecryptor();
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MOZ_IMPLICIT ClearKeyDecryptor();
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void InitKey();
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void InitKey(const Key& aKey);
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bool HasKey() const { return !!mKey.size(); }
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void QueueDecrypt(GMPBuffer* aBuffer, GMPEncryptedBufferMetadata* aMetadata);
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uint32_t AddRef();
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uint32_t Release();
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GMPErr Decrypt(uint8_t* aBuffer, uint32_t aBufferSize,
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GMPEncryptedBufferMetadata* aMetadata);
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const Key& DecryptionKey() const { return mKey; }
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private:
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struct DecryptTask : public GMPTask
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{
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DecryptTask(ClearKeyDecryptor* aTarget, GMPBuffer* aBuffer,
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GMPEncryptedBufferMetadata* aMetadata)
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: mTarget(aTarget), mBuffer(aBuffer), mMetadata(aMetadata) { }
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virtual void Run() MOZ_OVERRIDE
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{
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mTarget->Decrypt(mBuffer, mMetadata);
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}
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virtual void Destroy() MOZ_OVERRIDE {
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delete this;
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}
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virtual ~DecryptTask() { }
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ClearKeyDecryptor* mTarget;
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GMPBuffer* mBuffer;
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GMPEncryptedBufferMetadata* mMetadata;
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};
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struct DestroyTask : public GMPTask
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{
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explicit DestroyTask(ClearKeyDecryptor* aTarget) : mTarget(aTarget) { }
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virtual void Run() MOZ_OVERRIDE {
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delete mTarget;
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}
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virtual void Destroy() MOZ_OVERRIDE {
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delete this;
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}
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virtual ~DestroyTask() { }
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ClearKeyDecryptor* mTarget;
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};
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void Decrypt(GMPBuffer* aBuffer, GMPEncryptedBufferMetadata* aMetadata);
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uint32_t mRefCnt;
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GMPDecryptorCallback* mCallback;
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GMPThread* mThread;
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~ClearKeyDecryptor();
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Key mKey;
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};
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/* static */ ClearKeyDecryptionManager* ClearKeyDecryptionManager::sInstance = nullptr;
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/* static */ ClearKeyDecryptionManager*
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ClearKeyDecryptionManager::Get()
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{
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if (!sInstance) {
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sInstance = new ClearKeyDecryptionManager();
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}
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return sInstance;
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}
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ClearKeyDecryptionManager::ClearKeyDecryptionManager()
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{
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CK_LOGD("ClearKeyDecryptionManager ctor");
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// The ClearKeyDecryptionManager maintains a self reference which is
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// removed when the host is finished with the interface and calls
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// DecryptingComplete(). We make ClearKeyDecryptionManager refcounted so
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// that the tasks to that we dispatch to call functions on it won't end up
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// derefing a null reference after DecryptingComplete() is called.
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AddRef();
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CK_LOGD("ClearKeyDecryptionManager::ClearKeyDecryptionManager");
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}
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ClearKeyDecryptionManager::~ClearKeyDecryptionManager()
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{
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CK_LOGD("ClearKeyDecryptionManager dtor");
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MOZ_ASSERT(mRefCount == 1);
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CK_LOGD("ClearKeyDecryptionManager::~ClearKeyDecryptionManager");
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sInstance = nullptr;
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for (auto it = mDecryptors.begin(); it != mDecryptors.end(); it++) {
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it->second->Release();
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}
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mDecryptors.clear();
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}
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void
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ClearKeyDecryptionManager::Init(GMPDecryptorCallback* aCallback)
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bool
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ClearKeyDecryptionManager::HasSeenKeyId(const KeyId& aKeyId) const
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{
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CK_LOGD("ClearKeyDecryptionManager::Init");
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mCallback = aCallback;
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mCallback->SetCapabilities(GMP_EME_CAP_DECRYPT_AUDIO |
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GMP_EME_CAP_DECRYPT_VIDEO);
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ClearKeyPersistence::EnsureInitialized();
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CK_LOGD("ClearKeyDecryptionManager::HasSeenKeyId");
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return mDecryptors.find(aKeyId) != mDecryptors.end();
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}
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void
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ClearKeyDecryptionManager::CreateSession(uint32_t aCreateSessionToken,
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uint32_t aPromiseId,
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const char* aInitDataType,
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uint32_t aInitDataTypeSize,
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const uint8_t* aInitData,
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uint32_t aInitDataSize,
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GMPSessionType aSessionType)
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bool
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ClearKeyDecryptionManager::IsExpectingKeyForKeyId(const KeyId& aKeyId) const
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{
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CK_LOGD("ClearKeyDecryptionManager::CreateSession type:%s", aInitDataType);
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// initDataType must be "cenc".
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if (strcmp("cenc", aInitDataType)) {
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mCallback->RejectPromise(aPromiseId, kGMPNotSupportedError,
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nullptr /* message */, 0 /* messageLen */);
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return;
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}
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if (ClearKeyPersistence::DeferCreateSessionIfNotReady(this,
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aCreateSessionToken,
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aPromiseId,
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aInitData,
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aInitDataSize,
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aSessionType)) {
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return;
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}
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string sessionId = ClearKeyPersistence::GetNewSessionId(aSessionType);
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MOZ_ASSERT(mSessions.find(sessionId) == mSessions.end());
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ClearKeySession* session = new ClearKeySession(sessionId, mCallback, aSessionType);
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session->Init(aCreateSessionToken, aPromiseId, aInitData, aInitDataSize);
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mSessions[sessionId] = session;
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const vector<KeyId>& sessionKeys = session->GetKeyIds();
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vector<KeyId> neededKeys;
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for (auto it = sessionKeys.begin(); it != sessionKeys.end(); it++) {
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if (!Contains(mDecryptors, *it)) {
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// Need to request this key ID from the client.
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neededKeys.push_back(*it);
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} else {
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// We already have a key for this key ID. Mark as usable.
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mCallback->KeyIdUsable(sessionId.c_str(), sessionId.length(),
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&(*it)[0], it->size());
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}
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}
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if (neededKeys.empty()) {
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CK_LOGD("No keys needed from client.");
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return;
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}
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// Send a request for needed key data.
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string request;
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ClearKeyUtils::MakeKeyRequest(neededKeys, request, aSessionType);
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mCallback->SessionMessage(&sessionId[0], sessionId.length(),
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(uint8_t*)&request[0], request.length(),
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"" /* destination url */, 0);
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CK_LOGD("ClearKeyDecryptionManager::IsExpectingKeyForKeyId");
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const auto& decryptor = mDecryptors.find(aKeyId);
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return decryptor != mDecryptors.end() && !decryptor->second->HasKey();
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}
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void
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ClearKeyDecryptionManager::LoadSession(uint32_t aPromiseId,
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const char* aSessionId,
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uint32_t aSessionIdLength)
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bool
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ClearKeyDecryptionManager::HasKeyForKeyId(const KeyId& aKeyId) const
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{
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CK_LOGD("ClearKeyDecryptionManager::LoadSession");
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if (!ClearKeyUtils::IsValidSessionId(aSessionId, aSessionIdLength)) {
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mCallback->ResolveLoadSessionPromise(aPromiseId, false);
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return;
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}
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if (ClearKeyPersistence::DeferLoadSessionIfNotReady(this,
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aPromiseId,
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aSessionId,
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aSessionIdLength)) {
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return;
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}
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string sid(aSessionId, aSessionId + aSessionIdLength);
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if (!ClearKeyPersistence::IsPersistentSessionId(sid)) {
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mCallback->ResolveLoadSessionPromise(aPromiseId, false);
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return;
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}
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// Callsback PersistentSessionDataLoaded with results...
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ClearKeyPersistence::LoadSessionData(this, sid, aPromiseId);
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CK_LOGD("ClearKeyDecryptionManager::HasKeyForKeyId");
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const auto& decryptor = mDecryptors.find(aKeyId);
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return decryptor != mDecryptors.end() && decryptor->second->HasKey();
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}
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void
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ClearKeyDecryptionManager::PersistentSessionDataLoaded(GMPErr aStatus,
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uint32_t aPromiseId,
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const string& aSessionId,
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const uint8_t* aKeyData,
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uint32_t aKeyDataSize)
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const Key&
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ClearKeyDecryptionManager::GetDecryptionKey(const KeyId& aKeyId)
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{
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if (GMP_FAILED(aStatus) ||
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Contains(mSessions, aSessionId) ||
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(aKeyDataSize % (2 * CLEARKEY_KEY_LEN)) != 0) {
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mCallback->ResolveLoadSessionPromise(aPromiseId, false);
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return;
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}
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ClearKeySession* session = new ClearKeySession(aSessionId,
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mCallback,
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kGMPPersistentSession);
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mSessions[aSessionId] = session;
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uint32_t numKeys = aKeyDataSize / (2 * CLEARKEY_KEY_LEN);
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for (uint32_t i = 0; i < numKeys; i ++) {
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const uint8_t* base = aKeyData + 2 * CLEARKEY_KEY_LEN * i;
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KeyId keyId(base, base + CLEARKEY_KEY_LEN);
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MOZ_ASSERT(keyId.size() == CLEARKEY_KEY_LEN);
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Key key(base + CLEARKEY_KEY_LEN, base + 2 * CLEARKEY_KEY_LEN);
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MOZ_ASSERT(key.size() == CLEARKEY_KEY_LEN);
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session->AddKeyId(keyId);
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if (!Contains(mDecryptors, keyId)) {
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mDecryptors[keyId] = new ClearKeyDecryptor(mCallback, key);
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}
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mDecryptors[keyId]->AddRef();
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mCallback->KeyIdUsable(aSessionId.c_str(), aSessionId.size(),
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&keyId[0], keyId.size());
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}
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mCallback->ResolveLoadSessionPromise(aPromiseId, true);
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MOZ_ASSERT(HasKeyForKeyId(aKeyId));
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return mDecryptors[aKeyId]->DecryptionKey();
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}
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void
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ClearKeyDecryptionManager::UpdateSession(uint32_t aPromiseId,
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const char* aSessionId,
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uint32_t aSessionIdLength,
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const uint8_t* aResponse,
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uint32_t aResponseSize)
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ClearKeyDecryptionManager::InitKey(KeyId aKeyId, Key aKey)
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{
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CK_LOGD("ClearKeyDecryptionManager::UpdateSession");
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string sessionId(aSessionId, aSessionId + aSessionIdLength);
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auto itr = mSessions.find(sessionId);
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if (itr == mSessions.end() || !(itr->second)) {
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CK_LOGW("ClearKey CDM couldn't resolve session ID in UpdateSession.");
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mCallback->RejectPromise(aPromiseId, kGMPNotFoundError, nullptr, 0);
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return;
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CK_LOGD("ClearKeyDecryptionManager::InitKey");
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if (IsExpectingKeyForKeyId(aKeyId)) {
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mDecryptors[aKeyId]->InitKey(aKey);
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}
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ClearKeySession* session = itr->second;
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// Parse the response for any (key ID, key) pairs.
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vector<KeyIdPair> keyPairs;
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if (!ClearKeyUtils::ParseJWK(aResponse, aResponseSize, keyPairs, session->Type())) {
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CK_LOGW("ClearKey CDM failed to parse JSON Web Key.");
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mCallback->RejectPromise(aPromiseId, kGMPInvalidAccessError, nullptr, 0);
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return;
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}
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for (auto it = keyPairs.begin(); it != keyPairs.end(); it++) {
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KeyId& keyId = it->mKeyId;
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if (!Contains(mDecryptors, keyId)) {
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mDecryptors[keyId] = new ClearKeyDecryptor(mCallback, it->mKey);
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mCallback->KeyIdUsable(aSessionId, aSessionIdLength,
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&keyId[0], keyId.size());
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}
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mDecryptors[keyId]->AddRef();
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}
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if (session->Type() != kGMPPersistentSession) {
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mCallback->ResolvePromise(aPromiseId);
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return;
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}
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// Store the keys on disk. We store a record whose name is the sessionId,
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// and simply append each keyId followed by its key.
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vector<uint8_t> keydata;
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Serialize(session, keydata);
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GMPTask* resolve = WrapTask(mCallback, &GMPDecryptorCallback::ResolvePromise, aPromiseId);
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static const char* message = "Couldn't store cenc key init data";
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GMPTask* reject = WrapTask(mCallback,
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&GMPDecryptorCallback::RejectPromise,
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aPromiseId,
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kGMPInvalidStateError,
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message,
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strlen(message));
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StoreData(sessionId, keydata, resolve, reject);
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}
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void
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ClearKeyDecryptionManager::Serialize(const ClearKeySession* aSession,
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std::vector<uint8_t>& aOutKeyData)
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ClearKeyDecryptionManager::ExpectKeyId(KeyId aKeyId)
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{
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const std::vector<KeyId>& keyIds = aSession->GetKeyIds();
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for (size_t i = 0; i < keyIds.size(); i++) {
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const KeyId& keyId = keyIds[i];
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if (!Contains(mDecryptors, keyId)) {
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continue;
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}
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MOZ_ASSERT(keyId.size() == CLEARKEY_KEY_LEN);
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aOutKeyData.insert(aOutKeyData.end(), keyId.begin(), keyId.end());
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const Key& key = mDecryptors[keyId]->DecryptionKey();
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MOZ_ASSERT(key.size() == CLEARKEY_KEY_LEN);
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aOutKeyData.insert(aOutKeyData.end(), key.begin(), key.end());
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CK_LOGD("ClearKeyDecryptionManager::ExpectKeyId");
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if (!HasSeenKeyId(aKeyId)) {
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mDecryptors[aKeyId] = new ClearKeyDecryptor();
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}
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mDecryptors[aKeyId]->AddRef();
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}
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void
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ClearKeyDecryptionManager::CloseSession(uint32_t aPromiseId,
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const char* aSessionId,
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uint32_t aSessionIdLength)
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ClearKeyDecryptionManager::ReleaseKeyId(KeyId aKeyId)
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{
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CK_LOGD("ClearKeyDecryptionManager::CloseSession");
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string sessionId(aSessionId, aSessionId + aSessionIdLength);
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auto itr = mSessions.find(sessionId);
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if (itr == mSessions.end()) {
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CK_LOGW("ClearKey CDM couldn't close non-existent session.");
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mCallback->RejectPromise(aPromiseId, kGMPNotFoundError, nullptr, 0);
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return;
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CK_LOGD("ClearKeyDecryptionManager::ReleaseKeyId");
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ClearKeyDecryptor* decryptor = mDecryptors[aKeyId];
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if (!decryptor->Release()) {
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mDecryptors.erase(aKeyId);
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}
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ClearKeySession* session = itr->second;
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MOZ_ASSERT(session);
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ClearInMemorySessionData(session);
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mCallback->ResolvePromise(aPromiseId);
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mCallback->SessionClosed(aSessionId, aSessionIdLength);
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}
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void
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ClearKeyDecryptionManager::ClearInMemorySessionData(ClearKeySession* aSession)
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{
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MOZ_ASSERT(aSession);
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const vector<KeyId>& keyIds = aSession->GetKeyIds();
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for (auto it = keyIds.begin(); it != keyIds.end(); it++) {
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MOZ_ASSERT(Contains(mDecryptors, *it));
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if (!mDecryptors[*it]->Release()) {
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mDecryptors.erase(*it);
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mCallback->KeyIdNotUsable(aSession->Id().c_str(), aSession->Id().size(),
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&(*it)[0], it->size());
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}
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}
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mSessions.erase(aSession->Id());
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delete aSession;
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}
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void
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ClearKeyDecryptionManager::RemoveSession(uint32_t aPromiseId,
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const char* aSessionId,
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uint32_t aSessionIdLength)
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{
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string sessionId(aSessionId, aSessionId + aSessionIdLength);
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auto itr = mSessions.find(sessionId);
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if (itr == mSessions.end()) {
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CK_LOGW("ClearKey CDM couldn't remove non-existent session.");
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mCallback->RejectPromise(aPromiseId, kGMPNotFoundError, nullptr, 0);
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return;
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}
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ClearKeySession* session = itr->second;
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MOZ_ASSERT(session);
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string sid = session->Id();
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bool isPersistent = session->Type() == kGMPPersistentSession;
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ClearInMemorySessionData(session);
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if (!isPersistent) {
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mCallback->ResolvePromise(aPromiseId);
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return;
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}
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ClearKeyPersistence::PersistentSessionRemoved(sid);
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// Overwrite the record storing the sessionId's key data with a zero
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// length record to delete it.
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vector<uint8_t> emptyKeydata;
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GMPTask* resolve = WrapTask(mCallback, &GMPDecryptorCallback::ResolvePromise, aPromiseId);
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static const char* message = "Could not remove session";
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GMPTask* reject = WrapTask(mCallback,
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&GMPDecryptorCallback::RejectPromise,
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aPromiseId,
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kGMPInvalidAccessError,
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message,
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strlen(message));
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StoreData(sessionId, emptyKeydata, resolve, reject);
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}
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void
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ClearKeyDecryptionManager::SetServerCertificate(uint32_t aPromiseId,
|
||||
const uint8_t* aServerCert,
|
||||
uint32_t aServerCertSize)
|
||||
{
|
||||
// ClearKey CDM doesn't support this method by spec.
|
||||
CK_LOGD("ClearKeyDecryptionManager::SetServerCertificate");
|
||||
mCallback->RejectPromise(aPromiseId, kGMPNotSupportedError,
|
||||
nullptr /* message */, 0 /* messageLen */);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeyDecryptionManager::Decrypt(GMPBuffer* aBuffer,
|
||||
GMPErr
|
||||
ClearKeyDecryptionManager::Decrypt(uint8_t* aBuffer, uint32_t aBufferSize,
|
||||
GMPEncryptedBufferMetadata* aMetadata)
|
||||
{
|
||||
CK_LOGD("ClearKeyDecryptionManager::Decrypt");
|
||||
KeyId keyId(aMetadata->KeyId(), aMetadata->KeyId() + aMetadata->KeyIdSize());
|
||||
|
||||
if (!Contains(mDecryptors, keyId)) {
|
||||
CK_LOGD("ClearKeyDecryptionManager::Decrypt GMPNoKeyErr");
|
||||
mCallback->Decrypted(aBuffer, GMPNoKeyErr);
|
||||
return;
|
||||
if (!HasKeyForKeyId(keyId)) {
|
||||
return GMPNoKeyErr;
|
||||
}
|
||||
|
||||
mDecryptors[keyId]->QueueDecrypt(aBuffer, aMetadata);
|
||||
return mDecryptors[keyId]->Decrypt(aBuffer, aBufferSize, aMetadata);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeyDecryptionManager::DecryptingComplete()
|
||||
ClearKeyDecryptor::ClearKeyDecryptor()
|
||||
{
|
||||
CK_LOGD("ClearKeyDecryptionManager::DecryptingComplete");
|
||||
CK_LOGD("ClearKeyDecryptor ctor");
|
||||
}
|
||||
|
||||
for (auto it = mSessions.begin(); it != mSessions.end(); it++) {
|
||||
delete it->second;
|
||||
}
|
||||
mSessions.clear();
|
||||
|
||||
for (auto it = mDecryptors.begin(); it != mDecryptors.end(); it++) {
|
||||
delete it->second;
|
||||
}
|
||||
mDecryptors.clear();
|
||||
|
||||
Release();
|
||||
ClearKeyDecryptor::~ClearKeyDecryptor()
|
||||
{
|
||||
CK_LOGD("ClearKeyDecryptor dtor; key ID = %08x...", *(uint32_t*)&mKey[0]);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeyDecryptor::QueueDecrypt(GMPBuffer* aBuffer,
|
||||
ClearKeyDecryptor::InitKey(const Key& aKey)
|
||||
{
|
||||
mKey = aKey;
|
||||
}
|
||||
|
||||
GMPErr
|
||||
ClearKeyDecryptor::Decrypt(uint8_t* aBuffer, uint32_t aBufferSize,
|
||||
GMPEncryptedBufferMetadata* aMetadata)
|
||||
{
|
||||
CK_LOGD("ClearKeyDecryptor::QueueDecrypt");
|
||||
mThread->Post(new DecryptTask(this, aBuffer, aMetadata));
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeyDecryptor::Decrypt(GMPBuffer* aBuffer,
|
||||
GMPEncryptedBufferMetadata* aMetadata)
|
||||
{
|
||||
if (!mThread) {
|
||||
mCallback->Decrypted(aBuffer, GMPGenericErr);
|
||||
}
|
||||
|
||||
CK_LOGD("ClearKeyDecryptor::Decrypt");
|
||||
// If the sample is split up into multiple encrypted subsamples, we need to
|
||||
// stitch them into one continuous buffer for decryption.
|
||||
vector<uint8_t> tmp(aBuffer->Size());
|
||||
std::vector<uint8_t> tmp(aBufferSize);
|
||||
|
||||
if (aMetadata->NumSubsamples()) {
|
||||
// Take all encrypted parts of subsamples and stitch them into one
|
||||
// continuous encrypted buffer.
|
||||
unsigned char* data = aBuffer->Data();
|
||||
unsigned char* data = aBuffer;
|
||||
unsigned char* iter = &tmp[0];
|
||||
for (size_t i = 0; i < aMetadata->NumSubsamples(); i++) {
|
||||
data += aMetadata->ClearBytes()[i];
|
||||
@ -480,11 +173,11 @@ ClearKeyDecryptor::Decrypt(GMPBuffer* aBuffer,
|
||||
|
||||
tmp.resize((size_t)(iter - &tmp[0]));
|
||||
} else {
|
||||
memcpy(&tmp[0], aBuffer->Data(), aBuffer->Size());
|
||||
memcpy(&tmp[0], aBuffer, aBufferSize);
|
||||
}
|
||||
|
||||
MOZ_ASSERT(aMetadata->IVSize() == 8 || aMetadata->IVSize() == 16);
|
||||
vector<uint8_t> iv(aMetadata->IV(), aMetadata->IV() + aMetadata->IVSize());
|
||||
std::vector<uint8_t> iv(aMetadata->IV(), aMetadata->IV() + aMetadata->IVSize());
|
||||
iv.insert(iv.end(), CLEARKEY_KEY_LEN - aMetadata->IVSize(), 0);
|
||||
|
||||
ClearKeyUtils::DecryptAES(mKey, tmp, iv);
|
||||
@ -492,7 +185,7 @@ ClearKeyDecryptor::Decrypt(GMPBuffer* aBuffer,
|
||||
if (aMetadata->NumSubsamples()) {
|
||||
// Take the decrypted buffer, split up into subsamples, and insert those
|
||||
// subsamples back into their original position in the original buffer.
|
||||
unsigned char* data = aBuffer->Data();
|
||||
unsigned char* data = aBuffer;
|
||||
unsigned char* iter = &tmp[0];
|
||||
for (size_t i = 0; i < aMetadata->NumSubsamples(); i++) {
|
||||
data += aMetadata->ClearBytes()[i];
|
||||
@ -504,52 +197,8 @@ ClearKeyDecryptor::Decrypt(GMPBuffer* aBuffer,
|
||||
iter += cipherBytes;
|
||||
}
|
||||
} else {
|
||||
memcpy(aBuffer->Data(), &tmp[0], aBuffer->Size());
|
||||
memcpy(aBuffer, &tmp[0], aBufferSize);
|
||||
}
|
||||
|
||||
mCallback->Decrypted(aBuffer, GMPNoErr);
|
||||
}
|
||||
|
||||
ClearKeyDecryptor::ClearKeyDecryptor(GMPDecryptorCallback* aCallback,
|
||||
const Key& aKey)
|
||||
: mRefCnt(0)
|
||||
, mCallback(aCallback)
|
||||
, mThread(nullptr)
|
||||
, mKey(aKey)
|
||||
{
|
||||
if (GetPlatform()->createthread(&mThread) != GMPNoErr) {
|
||||
CK_LOGD("failed to create thread in clearkey cdm");
|
||||
mThread = nullptr;
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
ClearKeyDecryptor::~ClearKeyDecryptor()
|
||||
{
|
||||
CK_LOGD("ClearKeyDecryptor dtor; key ID = %08x...", *(uint32_t*)&mKey[0]);
|
||||
}
|
||||
|
||||
uint32_t
|
||||
ClearKeyDecryptor::AddRef()
|
||||
{
|
||||
return ++mRefCnt;
|
||||
}
|
||||
|
||||
uint32_t
|
||||
ClearKeyDecryptor::Release()
|
||||
{
|
||||
uint32_t newCount = --mRefCnt;
|
||||
if (!newCount) {
|
||||
if (mThread) {
|
||||
// Shutdown mThread. We cache a pointer to mThread, as the DestroyTask
|
||||
// may run and delete |this| before Post() returns.
|
||||
GMPThread* thread = mThread;
|
||||
thread->Post(new DestroyTask(this));
|
||||
thread->Join();
|
||||
} else {
|
||||
delete this;
|
||||
}
|
||||
}
|
||||
|
||||
return newCount;
|
||||
return GMPNoErr;
|
||||
}
|
||||
|
||||
@ -2,79 +2,46 @@
|
||||
* 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 __ClearKeyDecryptor_h__
|
||||
#define __ClearKeyDecryptor_h__
|
||||
#ifndef __ClearKeyDecryptionManager_h__
|
||||
#define __ClearKeyDecryptionManager_h__
|
||||
|
||||
#include <map>
|
||||
#include <string>
|
||||
#include <vector>
|
||||
|
||||
#include "ClearKeySession.h"
|
||||
#include "ClearKeyUtils.h"
|
||||
#include "gmp-api/gmp-decryption.h"
|
||||
#include "ScopedNSSTypes.h"
|
||||
#include "RefCounted.h"
|
||||
|
||||
class ClearKeyDecryptor;
|
||||
class ClearKeyDecryptionManager MOZ_FINAL : public GMPDecryptor
|
||||
, public RefCounted
|
||||
|
||||
class ClearKeyDecryptionManager : public RefCounted
|
||||
{
|
||||
public:
|
||||
ClearKeyDecryptionManager();
|
||||
|
||||
virtual void Init(GMPDecryptorCallback* aCallback) MOZ_OVERRIDE;
|
||||
|
||||
virtual void CreateSession(uint32_t aCreateSessionToken,
|
||||
uint32_t aPromiseId,
|
||||
const char* aInitDataType,
|
||||
uint32_t aInitDataTypeSize,
|
||||
const uint8_t* aInitData,
|
||||
uint32_t aInitDataSize,
|
||||
GMPSessionType aSessionType) MOZ_OVERRIDE;
|
||||
|
||||
virtual void LoadSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength) MOZ_OVERRIDE;
|
||||
|
||||
virtual void UpdateSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength,
|
||||
const uint8_t* aResponse,
|
||||
uint32_t aResponseSize) MOZ_OVERRIDE;
|
||||
|
||||
virtual void CloseSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength) MOZ_OVERRIDE;
|
||||
|
||||
virtual void RemoveSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength) MOZ_OVERRIDE;
|
||||
|
||||
virtual void SetServerCertificate(uint32_t aPromiseId,
|
||||
const uint8_t* aServerCert,
|
||||
uint32_t aServerCertSize) MOZ_OVERRIDE;
|
||||
|
||||
virtual void Decrypt(GMPBuffer* aBuffer,
|
||||
GMPEncryptedBufferMetadata* aMetadata) MOZ_OVERRIDE;
|
||||
|
||||
virtual void DecryptingComplete() MOZ_OVERRIDE;
|
||||
|
||||
void PersistentSessionDataLoaded(GMPErr aStatus,
|
||||
uint32_t aPromiseId,
|
||||
const std::string& aSessionId,
|
||||
const uint8_t* aKeyData,
|
||||
uint32_t aKeyDataSize);
|
||||
|
||||
private:
|
||||
ClearKeyDecryptionManager();
|
||||
~ClearKeyDecryptionManager();
|
||||
|
||||
void ClearInMemorySessionData(ClearKeySession* aSession);
|
||||
void Serialize(const ClearKeySession* aSession, std::vector<uint8_t>& aOutKeyData);
|
||||
static ClearKeyDecryptionManager* sInstance;
|
||||
|
||||
GMPDecryptorCallback* mCallback;
|
||||
public:
|
||||
static ClearKeyDecryptionManager* Get();
|
||||
|
||||
bool HasSeenKeyId(const KeyId& aKeyId) const;
|
||||
bool HasKeyForKeyId(const KeyId& aKeyId) const;
|
||||
|
||||
const Key& GetDecryptionKey(const KeyId& aKeyId);
|
||||
|
||||
// Create a decryptor for the given KeyId if one does not already exist.
|
||||
void InitKey(KeyId aKeyId, Key aKey);
|
||||
void ExpectKeyId(KeyId aKeyId);
|
||||
void ReleaseKeyId(KeyId aKeyId);
|
||||
|
||||
GMPErr Decrypt(uint8_t* aBuffer, uint32_t aBufferSize,
|
||||
GMPEncryptedBufferMetadata* aMetadata);
|
||||
|
||||
void Shutdown();
|
||||
|
||||
private:
|
||||
bool IsExpectingKeyForKeyId(const KeyId& aKeyId) const;
|
||||
|
||||
std::map<KeyId, ClearKeyDecryptor*> mDecryptors;
|
||||
std::map<std::string, ClearKeySession*> mSessions;
|
||||
};
|
||||
|
||||
#endif // __ClearKeyDecryptor_h__
|
||||
#endif // __ClearKeyDecryptionManager_h__
|
||||
|
||||
@ -5,7 +5,7 @@
|
||||
#include "ClearKeyPersistence.h"
|
||||
#include "ClearKeyUtils.h"
|
||||
#include "ClearKeyStorage.h"
|
||||
#include "ClearKeyDecryptionManager.h"
|
||||
#include "ClearKeySessionManager.h"
|
||||
#include "mozilla/RefPtr.h"
|
||||
|
||||
#include <stdint.h>
|
||||
@ -97,7 +97,7 @@ ClearKeyPersistence::GetNewSessionId(GMPSessionType aSessionType)
|
||||
|
||||
class CreateSessionTask : public GMPTask {
|
||||
public:
|
||||
CreateSessionTask(ClearKeyDecryptionManager* aTarget,
|
||||
CreateSessionTask(ClearKeySessionManager* aTarget,
|
||||
uint32_t aCreateSessionToken,
|
||||
uint32_t aPromiseId,
|
||||
const uint8_t* aInitData,
|
||||
@ -125,7 +125,7 @@ public:
|
||||
delete this;
|
||||
}
|
||||
private:
|
||||
RefPtr<ClearKeyDecryptionManager> mTarget;
|
||||
RefPtr<ClearKeySessionManager> mTarget;
|
||||
uint32_t mCreateSessionToken;
|
||||
uint32_t mPromiseId;
|
||||
vector<uint8_t> mInitData;
|
||||
@ -134,7 +134,7 @@ private:
|
||||
|
||||
|
||||
/* static */ bool
|
||||
ClearKeyPersistence::DeferCreateSessionIfNotReady(ClearKeyDecryptionManager* aInstance,
|
||||
ClearKeyPersistence::DeferCreateSessionIfNotReady(ClearKeySessionManager* aInstance,
|
||||
uint32_t aCreateSessionToken,
|
||||
uint32_t aPromiseId,
|
||||
const uint8_t* aInitData,
|
||||
@ -156,7 +156,7 @@ ClearKeyPersistence::DeferCreateSessionIfNotReady(ClearKeyDecryptionManager* aIn
|
||||
|
||||
class LoadSessionTask : public GMPTask {
|
||||
public:
|
||||
LoadSessionTask(ClearKeyDecryptionManager* aTarget,
|
||||
LoadSessionTask(ClearKeySessionManager* aTarget,
|
||||
uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength)
|
||||
@ -174,13 +174,13 @@ public:
|
||||
delete this;
|
||||
}
|
||||
private:
|
||||
RefPtr<ClearKeyDecryptionManager> mTarget;
|
||||
RefPtr<ClearKeySessionManager> mTarget;
|
||||
uint32_t mPromiseId;
|
||||
string mSessionId;
|
||||
};
|
||||
|
||||
/* static */ bool
|
||||
ClearKeyPersistence::DeferLoadSessionIfNotReady(ClearKeyDecryptionManager* aInstance,
|
||||
ClearKeyPersistence::DeferLoadSessionIfNotReady(ClearKeySessionManager* aInstance,
|
||||
uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength)
|
||||
@ -204,7 +204,7 @@ ClearKeyPersistence::IsPersistentSessionId(const string& aSessionId)
|
||||
|
||||
class LoadSessionFromKeysTask : public ReadContinuation {
|
||||
public:
|
||||
LoadSessionFromKeysTask(ClearKeyDecryptionManager* aTarget,
|
||||
LoadSessionFromKeysTask(ClearKeySessionManager* aTarget,
|
||||
const string& aSessionId,
|
||||
uint32_t aPromiseId)
|
||||
: mTarget(aTarget)
|
||||
@ -220,13 +220,13 @@ public:
|
||||
mTarget->PersistentSessionDataLoaded(aStatus, mPromiseId, mSessionId, aData, aLength);
|
||||
}
|
||||
private:
|
||||
RefPtr<ClearKeyDecryptionManager> mTarget;
|
||||
RefPtr<ClearKeySessionManager> mTarget;
|
||||
string mSessionId;
|
||||
uint32_t mPromiseId;
|
||||
};
|
||||
|
||||
/* static */ void
|
||||
ClearKeyPersistence::LoadSessionData(ClearKeyDecryptionManager* aInstance,
|
||||
ClearKeyPersistence::LoadSessionData(ClearKeySessionManager* aInstance,
|
||||
const string& aSid,
|
||||
uint32_t aPromiseId)
|
||||
{
|
||||
|
||||
@ -8,7 +8,7 @@
|
||||
#include <string>
|
||||
#include "gmp-decryption.h"
|
||||
|
||||
class ClearKeyDecryptionManager;
|
||||
class ClearKeySessionManager;
|
||||
|
||||
class ClearKeyPersistence {
|
||||
public:
|
||||
@ -16,21 +16,21 @@ public:
|
||||
|
||||
static std::string GetNewSessionId(GMPSessionType aSessionType);
|
||||
|
||||
static bool DeferCreateSessionIfNotReady(ClearKeyDecryptionManager* aInstance,
|
||||
static bool DeferCreateSessionIfNotReady(ClearKeySessionManager* aInstance,
|
||||
uint32_t aCreateSessionToken,
|
||||
uint32_t aPromiseId,
|
||||
const uint8_t* aInitData,
|
||||
uint32_t aInitDataSize,
|
||||
GMPSessionType aSessionType);
|
||||
|
||||
static bool DeferLoadSessionIfNotReady(ClearKeyDecryptionManager* aInstance,
|
||||
static bool DeferLoadSessionIfNotReady(ClearKeySessionManager* aInstance,
|
||||
uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength);
|
||||
|
||||
static bool IsPersistentSessionId(const std::string& aSid);
|
||||
|
||||
static void LoadSessionData(ClearKeyDecryptionManager* aInstance,
|
||||
static void LoadSessionData(ClearKeySessionManager* aInstance,
|
||||
const std::string& aSid,
|
||||
uint32_t aPromiseId);
|
||||
|
||||
|
||||
@ -32,7 +32,7 @@ public:
|
||||
|
||||
void AddKeyId(const KeyId& aKeyId);
|
||||
|
||||
const std::string Id() const { return mSessionId; }
|
||||
const std::string& Id() const { return mSessionId; }
|
||||
|
||||
private:
|
||||
const std::string mSessionId;
|
||||
|
||||
393
media/gmp-clearkey/0.1/ClearKeySessionManager.cpp
Normal file
393
media/gmp-clearkey/0.1/ClearKeySessionManager.cpp
Normal file
@ -0,0 +1,393 @@
|
||||
/* 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/. */
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include "ClearKeyDecryptionManager.h"
|
||||
#include "ClearKeySessionManager.h"
|
||||
#include "ClearKeyUtils.h"
|
||||
#include "ClearKeyStorage.h"
|
||||
#include "ClearKeyPersistence.h"
|
||||
#include "gmp-task-utils.h"
|
||||
|
||||
#include "mozilla/Assertions.h"
|
||||
|
||||
using namespace mozilla;
|
||||
using namespace std;
|
||||
|
||||
ClearKeySessionManager::ClearKeySessionManager()
|
||||
: mDecryptionManager(ClearKeyDecryptionManager::Get())
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager ctor");
|
||||
AddRef();
|
||||
|
||||
if (GetPlatform()->createthread(&mThread) != GMPNoErr) {
|
||||
CK_LOGD("failed to create thread in clearkey cdm");
|
||||
mThread = nullptr;
|
||||
}
|
||||
}
|
||||
|
||||
ClearKeySessionManager::~ClearKeySessionManager()
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager dtor");
|
||||
MOZ_ASSERT(!mRefCount);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::Init(GMPDecryptorCallback* aCallback)
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::Init");
|
||||
mCallback = aCallback;
|
||||
mCallback->SetCapabilities(GMP_EME_CAP_DECRYPT_AUDIO |
|
||||
GMP_EME_CAP_DECRYPT_VIDEO);
|
||||
ClearKeyPersistence::EnsureInitialized();
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::CreateSession(uint32_t aCreateSessionToken,
|
||||
uint32_t aPromiseId,
|
||||
const char* aInitDataType,
|
||||
uint32_t aInitDataTypeSize,
|
||||
const uint8_t* aInitData,
|
||||
uint32_t aInitDataSize,
|
||||
GMPSessionType aSessionType)
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::CreateSession type:%s", aInitDataType);
|
||||
|
||||
// initDataType must be "cenc".
|
||||
if (strcmp("cenc", aInitDataType)) {
|
||||
mCallback->RejectPromise(aPromiseId, kGMPNotSupportedError,
|
||||
nullptr /* message */, 0 /* messageLen */);
|
||||
return;
|
||||
}
|
||||
|
||||
if (ClearKeyPersistence::DeferCreateSessionIfNotReady(this,
|
||||
aCreateSessionToken,
|
||||
aPromiseId,
|
||||
aInitData,
|
||||
aInitDataSize,
|
||||
aSessionType)) {
|
||||
return;
|
||||
}
|
||||
|
||||
string sessionId = ClearKeyPersistence::GetNewSessionId(aSessionType);
|
||||
MOZ_ASSERT(mSessions.find(sessionId) == mSessions.end());
|
||||
|
||||
ClearKeySession* session = new ClearKeySession(sessionId, mCallback, aSessionType);
|
||||
session->Init(aCreateSessionToken, aPromiseId, aInitData, aInitDataSize);
|
||||
mSessions[sessionId] = session;
|
||||
|
||||
const vector<KeyId>& sessionKeys = session->GetKeyIds();
|
||||
vector<KeyId> neededKeys;
|
||||
for (auto it = sessionKeys.begin(); it != sessionKeys.end(); it++) {
|
||||
// Need to request this key ID from the client. We always send a key
|
||||
// request, whether or not another session has sent a request with the same
|
||||
// key ID. Otherwise a script can end up waiting for another script to
|
||||
// respond to the request (which may not necessarily happen).
|
||||
neededKeys.push_back(*it);
|
||||
mDecryptionManager->ExpectKeyId(*it);
|
||||
}
|
||||
|
||||
if (neededKeys.empty()) {
|
||||
CK_LOGD("No keys needed from client.");
|
||||
return;
|
||||
}
|
||||
|
||||
// Send a request for needed key data.
|
||||
string request;
|
||||
ClearKeyUtils::MakeKeyRequest(neededKeys, request, aSessionType);
|
||||
mCallback->SessionMessage(&sessionId[0], sessionId.length(),
|
||||
(uint8_t*)&request[0], request.length(),
|
||||
"" /* destination url */, 0);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::LoadSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength)
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::LoadSession");
|
||||
|
||||
if (!ClearKeyUtils::IsValidSessionId(aSessionId, aSessionIdLength)) {
|
||||
mCallback->ResolveLoadSessionPromise(aPromiseId, false);
|
||||
return;
|
||||
}
|
||||
|
||||
if (ClearKeyPersistence::DeferLoadSessionIfNotReady(this,
|
||||
aPromiseId,
|
||||
aSessionId,
|
||||
aSessionIdLength)) {
|
||||
return;
|
||||
}
|
||||
|
||||
string sid(aSessionId, aSessionId + aSessionIdLength);
|
||||
if (!ClearKeyPersistence::IsPersistentSessionId(sid)) {
|
||||
mCallback->ResolveLoadSessionPromise(aPromiseId, false);
|
||||
return;
|
||||
}
|
||||
|
||||
// Callsback PersistentSessionDataLoaded with results...
|
||||
ClearKeyPersistence::LoadSessionData(this, sid, aPromiseId);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::PersistentSessionDataLoaded(GMPErr aStatus,
|
||||
uint32_t aPromiseId,
|
||||
const string& aSessionId,
|
||||
const uint8_t* aKeyData,
|
||||
uint32_t aKeyDataSize)
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::PersistentSessionDataLoaded");
|
||||
if (GMP_FAILED(aStatus) ||
|
||||
Contains(mSessions, aSessionId) ||
|
||||
(aKeyDataSize % (2 * CLEARKEY_KEY_LEN)) != 0) {
|
||||
mCallback->ResolveLoadSessionPromise(aPromiseId, false);
|
||||
return;
|
||||
}
|
||||
|
||||
ClearKeySession* session = new ClearKeySession(aSessionId,
|
||||
mCallback,
|
||||
kGMPPersistentSession);
|
||||
mSessions[aSessionId] = session;
|
||||
|
||||
uint32_t numKeys = aKeyDataSize / (2 * CLEARKEY_KEY_LEN);
|
||||
for (uint32_t i = 0; i < numKeys; i ++) {
|
||||
const uint8_t* base = aKeyData + 2 * CLEARKEY_KEY_LEN * i;
|
||||
|
||||
KeyId keyId(base, base + CLEARKEY_KEY_LEN);
|
||||
MOZ_ASSERT(keyId.size() == CLEARKEY_KEY_LEN);
|
||||
|
||||
Key key(base + CLEARKEY_KEY_LEN, base + 2 * CLEARKEY_KEY_LEN);
|
||||
MOZ_ASSERT(key.size() == CLEARKEY_KEY_LEN);
|
||||
|
||||
session->AddKeyId(keyId);
|
||||
|
||||
mDecryptionManager->ExpectKeyId(keyId);
|
||||
mDecryptionManager->InitKey(keyId, key);
|
||||
mKeyIds.insert(key);
|
||||
mCallback->KeyIdUsable(&aSessionId[0], aSessionId.size(),
|
||||
&keyId[0], keyId.size());
|
||||
}
|
||||
|
||||
mCallback->ResolveLoadSessionPromise(aPromiseId, true);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::UpdateSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength,
|
||||
const uint8_t* aResponse,
|
||||
uint32_t aResponseSize)
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::UpdateSession");
|
||||
string sessionId(aSessionId, aSessionId + aSessionIdLength);
|
||||
|
||||
auto itr = mSessions.find(sessionId);
|
||||
if (itr == mSessions.end() || !(itr->second)) {
|
||||
CK_LOGW("ClearKey CDM couldn't resolve session ID in UpdateSession.");
|
||||
mCallback->RejectPromise(aPromiseId, kGMPNotFoundError, nullptr, 0);
|
||||
return;
|
||||
}
|
||||
ClearKeySession* session = itr->second;
|
||||
|
||||
// Parse the response for any (key ID, key) pairs.
|
||||
vector<KeyIdPair> keyPairs;
|
||||
if (!ClearKeyUtils::ParseJWK(aResponse, aResponseSize, keyPairs, session->Type())) {
|
||||
CK_LOGW("ClearKey CDM failed to parse JSON Web Key.");
|
||||
mCallback->RejectPromise(aPromiseId, kGMPInvalidAccessError, nullptr, 0);
|
||||
return;
|
||||
}
|
||||
|
||||
for (auto it = keyPairs.begin(); it != keyPairs.end(); it++) {
|
||||
mDecryptionManager->InitKey(it->mKeyId, it->mKey);
|
||||
mKeyIds.insert(it->mKeyId);
|
||||
mCallback->KeyIdUsable(aSessionId, aSessionIdLength,
|
||||
&it->mKeyId[0], it->mKeyId.size());
|
||||
}
|
||||
|
||||
if (session->Type() != kGMPPersistentSession) {
|
||||
mCallback->ResolvePromise(aPromiseId);
|
||||
return;
|
||||
}
|
||||
|
||||
// Store the keys on disk. We store a record whose name is the sessionId,
|
||||
// and simply append each keyId followed by its key.
|
||||
vector<uint8_t> keydata;
|
||||
Serialize(session, keydata);
|
||||
GMPTask* resolve = WrapTask(mCallback, &GMPDecryptorCallback::ResolvePromise, aPromiseId);
|
||||
static const char* message = "Couldn't store cenc key init data";
|
||||
GMPTask* reject = WrapTask(mCallback,
|
||||
&GMPDecryptorCallback::RejectPromise,
|
||||
aPromiseId,
|
||||
kGMPInvalidStateError,
|
||||
message,
|
||||
strlen(message));
|
||||
StoreData(sessionId, keydata, resolve, reject);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::Serialize(const ClearKeySession* aSession,
|
||||
std::vector<uint8_t>& aOutKeyData)
|
||||
{
|
||||
const std::vector<KeyId>& keyIds = aSession->GetKeyIds();
|
||||
for (size_t i = 0; i < keyIds.size(); i++) {
|
||||
const KeyId& keyId = keyIds[i];
|
||||
if (!mDecryptionManager->HasKeyForKeyId(keyId)) {
|
||||
continue;
|
||||
}
|
||||
MOZ_ASSERT(keyId.size() == CLEARKEY_KEY_LEN);
|
||||
aOutKeyData.insert(aOutKeyData.end(), keyId.begin(), keyId.end());
|
||||
const Key& key = mDecryptionManager->GetDecryptionKey(keyId);
|
||||
MOZ_ASSERT(key.size() == CLEARKEY_KEY_LEN);
|
||||
aOutKeyData.insert(aOutKeyData.end(), key.begin(), key.end());
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::CloseSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength)
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::CloseSession");
|
||||
|
||||
string sessionId(aSessionId, aSessionId + aSessionIdLength);
|
||||
auto itr = mSessions.find(sessionId);
|
||||
if (itr == mSessions.end()) {
|
||||
CK_LOGW("ClearKey CDM couldn't close non-existent session.");
|
||||
mCallback->RejectPromise(aPromiseId, kGMPNotFoundError, nullptr, 0);
|
||||
return;
|
||||
}
|
||||
|
||||
ClearKeySession* session = itr->second;
|
||||
MOZ_ASSERT(session);
|
||||
|
||||
ClearInMemorySessionData(session);
|
||||
mCallback->ResolvePromise(aPromiseId);
|
||||
mCallback->SessionClosed(aSessionId, aSessionIdLength);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::ClearInMemorySessionData(ClearKeySession* aSession)
|
||||
{
|
||||
MOZ_ASSERT(aSession);
|
||||
|
||||
const vector<KeyId>& keyIds = aSession->GetKeyIds();
|
||||
for (auto it = keyIds.begin(); it != keyIds.end(); it++) {
|
||||
MOZ_ASSERT(mDecryptionManager->HasKeyForKeyId(*it));
|
||||
mDecryptionManager->ReleaseKeyId(*it);
|
||||
|
||||
const string& sessionId = aSession->Id();
|
||||
mCallback->KeyIdNotUsable(&sessionId[0], sessionId.size(),
|
||||
&(*it)[0], it->size());
|
||||
}
|
||||
|
||||
mSessions.erase(aSession->Id());
|
||||
delete aSession;
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::RemoveSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength)
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::RemoveSession");
|
||||
string sessionId(aSessionId, aSessionId + aSessionIdLength);
|
||||
auto itr = mSessions.find(sessionId);
|
||||
if (itr == mSessions.end()) {
|
||||
CK_LOGW("ClearKey CDM couldn't remove non-existent session.");
|
||||
mCallback->RejectPromise(aPromiseId, kGMPNotFoundError, nullptr, 0);
|
||||
return;
|
||||
}
|
||||
|
||||
ClearKeySession* session = itr->second;
|
||||
MOZ_ASSERT(session);
|
||||
string sid = session->Id();
|
||||
bool isPersistent = session->Type() == kGMPPersistentSession;
|
||||
ClearInMemorySessionData(session);
|
||||
|
||||
if (!isPersistent) {
|
||||
mCallback->ResolvePromise(aPromiseId);
|
||||
return;
|
||||
}
|
||||
|
||||
ClearKeyPersistence::PersistentSessionRemoved(sid);
|
||||
|
||||
// Overwrite the record storing the sessionId's key data with a zero
|
||||
// length record to delete it.
|
||||
vector<uint8_t> emptyKeydata;
|
||||
GMPTask* resolve = WrapTask(mCallback, &GMPDecryptorCallback::ResolvePromise, aPromiseId);
|
||||
static const char* message = "Could not remove session";
|
||||
GMPTask* reject = WrapTask(mCallback,
|
||||
&GMPDecryptorCallback::RejectPromise,
|
||||
aPromiseId,
|
||||
kGMPInvalidAccessError,
|
||||
message,
|
||||
strlen(message));
|
||||
StoreData(sessionId, emptyKeydata, resolve, reject);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::SetServerCertificate(uint32_t aPromiseId,
|
||||
const uint8_t* aServerCert,
|
||||
uint32_t aServerCertSize)
|
||||
{
|
||||
// ClearKey CDM doesn't support this method by spec.
|
||||
CK_LOGD("ClearKeySessionManager::SetServerCertificate");
|
||||
mCallback->RejectPromise(aPromiseId, kGMPNotSupportedError,
|
||||
nullptr /* message */, 0 /* messageLen */);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::Decrypt(GMPBuffer* aBuffer,
|
||||
GMPEncryptedBufferMetadata* aMetadata)
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::Decrypt");
|
||||
|
||||
if (!mThread) {
|
||||
CK_LOGW("No decrypt thread");
|
||||
mCallback->Decrypted(aBuffer, GMPGenericErr);
|
||||
return;
|
||||
}
|
||||
|
||||
mThread->Post(WrapTask(this,
|
||||
&ClearKeySessionManager::DoDecrypt,
|
||||
aBuffer, aMetadata));
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::DoDecrypt(GMPBuffer* aBuffer,
|
||||
GMPEncryptedBufferMetadata* aMetadata)
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::DoDecrypt");
|
||||
|
||||
GMPErr rv = mDecryptionManager->Decrypt(aBuffer->Data(), aBuffer->Size(),
|
||||
aMetadata);
|
||||
CK_LOGD("DeDecrypt finished with code %x\n", rv);
|
||||
mCallback->Decrypted(aBuffer, rv);
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::Shutdown()
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::Shutdown");
|
||||
|
||||
for (auto it = mSessions.begin(); it != mSessions.end(); it++) {
|
||||
delete it->second;
|
||||
}
|
||||
mSessions.clear();
|
||||
}
|
||||
|
||||
void
|
||||
ClearKeySessionManager::DecryptingComplete()
|
||||
{
|
||||
CK_LOGD("ClearKeySessionManager::DecryptingComplete");
|
||||
|
||||
GMPThread* thread = mThread;
|
||||
thread->Join();
|
||||
|
||||
Shutdown();
|
||||
mDecryptionManager = nullptr;
|
||||
Release();
|
||||
}
|
||||
88
media/gmp-clearkey/0.1/ClearKeySessionManager.h
Normal file
88
media/gmp-clearkey/0.1/ClearKeySessionManager.h
Normal file
@ -0,0 +1,88 @@
|
||||
/* 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 __ClearKeyDecryptor_h__
|
||||
#define __ClearKeyDecryptor_h__
|
||||
|
||||
#include <map>
|
||||
#include <set>
|
||||
#include <string>
|
||||
#include <vector>
|
||||
|
||||
#include "ClearKeyDecryptionManager.h"
|
||||
#include "ClearKeySession.h"
|
||||
#include "ClearKeyUtils.h"
|
||||
#include "gmp-api/gmp-decryption.h"
|
||||
#include "mozilla/RefPtr.h"
|
||||
#include "ScopedNSSTypes.h"
|
||||
#include "RefCounted.h"
|
||||
|
||||
class ClearKeySessionManager MOZ_FINAL : public GMPDecryptor
|
||||
, public RefCounted
|
||||
{
|
||||
public:
|
||||
ClearKeySessionManager();
|
||||
|
||||
virtual void Init(GMPDecryptorCallback* aCallback) MOZ_OVERRIDE;
|
||||
|
||||
virtual void CreateSession(uint32_t aCreateSessionToken,
|
||||
uint32_t aPromiseId,
|
||||
const char* aInitDataType,
|
||||
uint32_t aInitDataTypeSize,
|
||||
const uint8_t* aInitData,
|
||||
uint32_t aInitDataSize,
|
||||
GMPSessionType aSessionType) MOZ_OVERRIDE;
|
||||
|
||||
virtual void LoadSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength) MOZ_OVERRIDE;
|
||||
|
||||
virtual void UpdateSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength,
|
||||
const uint8_t* aResponse,
|
||||
uint32_t aResponseSize) MOZ_OVERRIDE;
|
||||
|
||||
virtual void CloseSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength) MOZ_OVERRIDE;
|
||||
|
||||
virtual void RemoveSession(uint32_t aPromiseId,
|
||||
const char* aSessionId,
|
||||
uint32_t aSessionIdLength) MOZ_OVERRIDE;
|
||||
|
||||
virtual void SetServerCertificate(uint32_t aPromiseId,
|
||||
const uint8_t* aServerCert,
|
||||
uint32_t aServerCertSize) MOZ_OVERRIDE;
|
||||
|
||||
virtual void Decrypt(GMPBuffer* aBuffer,
|
||||
GMPEncryptedBufferMetadata* aMetadata) MOZ_OVERRIDE;
|
||||
|
||||
virtual void DecryptingComplete() MOZ_OVERRIDE;
|
||||
|
||||
void PersistentSessionDataLoaded(GMPErr aStatus,
|
||||
uint32_t aPromiseId,
|
||||
const std::string& aSessionId,
|
||||
const uint8_t* aKeyData,
|
||||
uint32_t aKeyDataSize);
|
||||
|
||||
private:
|
||||
~ClearKeySessionManager();
|
||||
|
||||
void DoDecrypt(GMPBuffer* aBuffer, GMPEncryptedBufferMetadata* aMetadata);
|
||||
void Shutdown();
|
||||
|
||||
void ClearInMemorySessionData(ClearKeySession* aSession);
|
||||
void Serialize(const ClearKeySession* aSession, std::vector<uint8_t>& aOutKeyData);
|
||||
|
||||
mozilla::RefPtr<ClearKeyDecryptionManager> mDecryptionManager;
|
||||
|
||||
GMPDecryptorCallback* mCallback;
|
||||
GMPThread* mThread;
|
||||
|
||||
std::set<KeyId> mKeyIds;
|
||||
std::map<std::string, ClearKeySession*> mSessions;
|
||||
};
|
||||
|
||||
#endif // __ClearKeyDecryptor_h__
|
||||
@ -12,12 +12,12 @@ public:
|
||||
++mRefCount;
|
||||
}
|
||||
|
||||
void Release() {
|
||||
if (mRefCount == 1) {
|
||||
uint32_t Release() {
|
||||
uint32_t newCount = --mRefCount;
|
||||
if (!newCount) {
|
||||
delete this;
|
||||
} else {
|
||||
--mRefCount;
|
||||
}
|
||||
return newCount;
|
||||
}
|
||||
|
||||
protected:
|
||||
|
||||
@ -5,7 +5,7 @@
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "ClearKeyDecryptionManager.h"
|
||||
#include "ClearKeySessionManager.h"
|
||||
|
||||
#include "gmp-api/gmp-decryption.h"
|
||||
#include "gmp-api/gmp-platform.h"
|
||||
@ -34,7 +34,7 @@ GMPGetAPI(const char* aApiName, void* aHostAPI, void** aPluginAPI)
|
||||
return GMPNotImplementedErr;
|
||||
}
|
||||
|
||||
*aPluginAPI = new ClearKeyDecryptionManager();
|
||||
*aPluginAPI = new ClearKeySessionManager();
|
||||
|
||||
return GMPNoErr;
|
||||
}
|
||||
|
||||
@ -12,6 +12,7 @@ UNIFIED_SOURCES += [
|
||||
'ClearKeyDecryptionManager.cpp',
|
||||
'ClearKeyPersistence.cpp',
|
||||
'ClearKeySession.cpp',
|
||||
'ClearKeySessionManager.cpp',
|
||||
'ClearKeyStorage.cpp',
|
||||
'ClearKeyUtils.cpp',
|
||||
'gmp-clearkey.cpp',
|
||||
|
||||
Loading…
Reference in New Issue
Block a user