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/* 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
#include "MFCDMChild.h"
#include "mozilla/EMEUtils.h"
#include "mozilla/KeySystemConfig.h"
#include "mozilla/RefPtr.h"
#include "mozilla/StaticString.h"
#include "mozilla/WMFCDMProxyCallback.h"
#include "nsString.h"
#include "RemoteDecoderManagerChild.h"
namespace mozilla {
#define LOG(msg, ...) \
EME_LOG("MFCDMChild[%p]@%s: " msg, this, __func__, ##__VA_ARGS__)
#define SLOG(msg, ...) EME_LOG("MFCDMChild@%s: " msg, __func__, ##__VA_ARGS__)
#define HANDLE_PENDING_PROMISE(method, callsite, promise, promiseId) \
do { \
promise->Then( \
self->mManagerThread, callsite, \
[self, promiseId, callsite]( \
PMFCDMChild::method##Promise::ResolveOrRejectValue&& result) { \
auto iter = self->mPendingGenericPromises.find(promiseId); \
if (iter == self->mPendingGenericPromises.end()) { \
return; \
} \
auto& promiseHolder = iter->second; \
if (result.IsResolve()) { \
if (NS_SUCCEEDED(result.ResolveValue())) { \
promiseHolder.ResolveIfExists(true, callsite); \
} else { \
promiseHolder.RejectIfExists(result.ResolveValue(), callsite); \
} \
} else { \
/* IPC die */ \
promiseHolder.RejectIfExists(NS_ERROR_FAILURE, callsite); \
} \
self->mPendingGenericPromises.erase(iter); \
}); \
} while (0)
#define INVOKE_ASYNC(method, promiseId, param1) \
do { \
StaticString callsite = __func__; \
using ParamType = std::remove_reference<decltype(param1)>::type; \
mManagerThread->Dispatch(NS_NewRunnableFunction( \
callsite, [self = RefPtr{this}, callsite, promiseId, \
param_1 = std::forward<ParamType>(param1)] { \
auto p = self->Send##method(param_1); \
HANDLE_PENDING_PROMISE(method, callsite, p, promiseId); \
})); \
} while (0)
#define INVOKE_ASYNC2(method, promiseId, param1, param2) \
do { \
StaticString callsite = __func__; \
using ParamType1 = std::remove_reference<decltype(param1)>::type; \
using ParamType2 = std::remove_reference<decltype(param2)>::type; \
mManagerThread->Dispatch(NS_NewRunnableFunction( \
callsite, [self = RefPtr{this}, callsite, promiseId, \
param_1 = std::forward<ParamType1>(param1), \
param_2 = std::forward<ParamType2>(param2)] { \
auto p = self->Send##method(param_1, param_2); \
HANDLE_PENDING_PROMISE(method, callsite, p, promiseId); \
})); \
} while (0)
MFCDMChild::MFCDMChild(const nsAString& aKeySystem)
: mKeySystem(aKeySystem),
mManagerThread(RemoteDecoderManagerChild::GetManagerThread()),
mState(NS_ERROR_NOT_INITIALIZED),
mShutdown(false) {}
MFCDMChild::~MFCDMChild() {}
void MFCDMChild::EnsureRemote() {
if (mRemotePromise) {
LOG("already created remote promise");
return;
}
if (!mManagerThread) {
LOG("no manager thread");
mState = NS_ERROR_NOT_AVAILABLE;
mRemotePromise = RemotePromise::CreateAndReject(mState, __func__);
return;
}
mRemotePromise = mRemotePromiseHolder.Ensure(__func__);
RefPtr<MFCDMChild> self = this;
RemoteDecoderManagerChild::LaunchUtilityProcessIfNeeded(
RemoteDecodeIn::UtilityProcess_MFMediaEngineCDM)
->Then(
mManagerThread, __func__,
[self, this](bool) {
mRemoteRequest.Complete();
RefPtr<RemoteDecoderManagerChild> manager =
RemoteDecoderManagerChild::GetSingleton(
RemoteDecodeIn::UtilityProcess_MFMediaEngineCDM);
if (!manager || !manager->CanSend()) {
LOG("manager not exists or can't send");
mState = NS_ERROR_NOT_AVAILABLE;
mRemotePromiseHolder.RejectIfExists(mState, __func__);
return;
}
mIPDLSelfRef = this;
MOZ_ALWAYS_TRUE(manager->SendPMFCDMConstructor(this, mKeySystem));
mState = NS_OK;
mRemotePromiseHolder.ResolveIfExists(true, __func__);
},
[self, this](nsresult rv) {
mRemoteRequest.Complete();
LOG("fail to launch MFCDM process");
mState = rv;
mRemotePromiseHolder.RejectIfExists(rv, __func__);
})
->Track(mRemoteRequest);
}
void MFCDMChild::Shutdown() {
MOZ_ASSERT(!mShutdown);
mShutdown = true;
mProxyCallback = nullptr;
if (mState == NS_OK) {
mManagerThread->Dispatch(
NS_NewRunnableFunction(__func__, [self = RefPtr{this}, this]() {
mRemoteRequest.DisconnectIfExists();
mInitRequest.DisconnectIfExists();
for (auto& promise : mPendingSessionPromises) {
promise.second.RejectIfExists(NS_ERROR_ABORT, __func__);
}
mPendingSessionPromises.clear();
for (auto& promise : mPendingGenericPromises) {
promise.second.RejectIfExists(NS_ERROR_ABORT, __func__);
}
mPendingGenericPromises.clear();
mRemotePromiseHolder.RejectIfExists(NS_ERROR_ABORT, __func__);
mCapabilitiesPromiseHolder.RejectIfExists(NS_ERROR_ABORT, __func__);
Send__delete__(this);
}));
}
}
RefPtr<MFCDMChild::CapabilitiesPromise> MFCDMChild::GetCapabilities(
MFCDMCapabilitiesRequest&& aRequest) {
MOZ_ASSERT(mManagerThread);
if (mShutdown) {
return CapabilitiesPromise::CreateAndReject(NS_ERROR_ABORT, __func__);
}
if (mState != NS_OK && mState != NS_ERROR_NOT_INITIALIZED) {
LOG("error=%x", uint32_t(nsresult(mState)));
return CapabilitiesPromise::CreateAndReject(mState, __func__);
}
auto doSend = [self = RefPtr{this}, request = std::move(aRequest), this]() {
SendGetCapabilities(request)->Then(
mManagerThread, __func__,
[self, this](MFCDMCapabilitiesResult&& aResult) {
if (aResult.type() == MFCDMCapabilitiesResult::Tnsresult) {
mCapabilitiesPromiseHolder.RejectIfExists(aResult.get_nsresult(),
__func__);
return;
}
mCapabilitiesPromiseHolder.ResolveIfExists(
std::move(aResult.get_MFCDMCapabilitiesIPDL()), __func__);
},
[self, this](const mozilla::ipc::ResponseRejectReason& aReason) {
mCapabilitiesPromiseHolder.RejectIfExists(NS_ERROR_FAILURE, __func__);
});
};
return InvokeAsync(doSend, __func__, mCapabilitiesPromiseHolder);
}
// Neither error nor shutdown.
void MFCDMChild::AssertSendable() {
MOZ_ASSERT((mState == NS_ERROR_NOT_INITIALIZED || mState == NS_OK) &&
mShutdown == false);
}
template <typename PromiseType>
already_AddRefed<PromiseType> MFCDMChild::InvokeAsync(
std::function<void()>&& aCall, StaticString aCallerName,
MozPromiseHolder<PromiseType>& aPromise) {
AssertSendable();
if (mState == NS_OK) {
// mRemotePromise is resolved, send on manager thread.
mManagerThread->Dispatch(
NS_NewRunnableFunction(aCallerName, std::move(aCall)));
} else if (mState == NS_ERROR_NOT_INITIALIZED) {
// mRemotePromise is pending, chain to it.
mRemotePromise->Then(
mManagerThread, __func__, std::move(aCall),
[self = RefPtr{this}, this, &aPromise, aCallerName](nsresult rv) {
LOG("error=%x", uint32_t(rv));
mState = rv;
aPromise.RejectIfExists(rv, aCallerName);
});
}
return aPromise.Ensure(aCallerName);
}
RefPtr<MFCDMChild::InitPromise> MFCDMChild::Init(
const nsAString& aOrigin, const CopyableTArray<nsString>& aInitDataTypes,
const KeySystemConfig::Requirement aPersistentState,
const KeySystemConfig::Requirement aDistinctiveID,
const CopyableTArray<MFCDMMediaCapability>& aAudioCapabilities,
const CopyableTArray<MFCDMMediaCapability>& aVideoCapabilities,
WMFCDMProxyCallback* aProxyCallback) {
MOZ_ASSERT(mManagerThread);
if (mShutdown) {
return InitPromise::CreateAndReject(NS_ERROR_ABORT, __func__);
}
if (mState != NS_OK && mState != NS_ERROR_NOT_INITIALIZED) {
LOG("error=%x", uint32_t(nsresult(mState)));
return InitPromise::CreateAndReject(mState, __func__);
}
mProxyCallback = aProxyCallback;
MFCDMInitParamsIPDL params{nsString(aOrigin), aInitDataTypes,
aDistinctiveID, aPersistentState,
aAudioCapabilities, aVideoCapabilities};
auto doSend = [self = RefPtr{this}, this, params]() {
SendInit(params)
->Then(
mManagerThread, __func__,
[self, this](MFCDMInitResult&& aResult) {
mInitRequest.Complete();
if (aResult.type() == MFCDMInitResult::Tnsresult) {
nsresult rv = aResult.get_nsresult();
mInitPromiseHolder.RejectIfExists(rv, __func__);
return;
}
mId = aResult.get_MFCDMInitIPDL().id();
mInitPromiseHolder.ResolveIfExists(aResult.get_MFCDMInitIPDL(),
__func__);
},
[self, this](const mozilla::ipc::ResponseRejectReason& aReason) {
mInitRequest.Complete();
mInitPromiseHolder.RejectIfExists(NS_ERROR_FAILURE, __func__);
})
->Track(mInitRequest);
};
return InvokeAsync(std::move(doSend), __func__, mInitPromiseHolder);
}
RefPtr<MFCDMChild::SessionPromise> MFCDMChild::CreateSessionAndGenerateRequest(
uint32_t aPromiseId, KeySystemConfig::SessionType aSessionType,
const nsAString& aInitDataType, const nsTArray<uint8_t>& aInitData) {
MOZ_ASSERT(mManagerThread);
MOZ_ASSERT(mId > 0, "Should call Init() first and wait for it");
if (mShutdown) {
return MFCDMChild::SessionPromise::CreateAndReject(NS_ERROR_ABORT,
__func__);
}
MOZ_ASSERT(mPendingSessionPromises.find(aPromiseId) ==
mPendingSessionPromises.end());
mPendingSessionPromises.emplace(aPromiseId,
MozPromiseHolder<SessionPromise>{});
mManagerThread->Dispatch(NS_NewRunnableFunction(
__func__, [self = RefPtr{this}, this,
params =
MFCDMCreateSessionParamsIPDL{
aSessionType, nsString{aInitDataType}, aInitData},
aPromiseId] {
SendCreateSessionAndGenerateRequest(params)->Then(
mManagerThread, __func__,
[self, aPromiseId, this](const MFCDMSessionResult& result) {
auto iter = mPendingSessionPromises.find(aPromiseId);
if (iter == mPendingSessionPromises.end()) {
return;
}
auto& promiseHolder = iter->second;
if (result.type() == MFCDMSessionResult::Tnsresult) {
promiseHolder.RejectIfExists(result.get_nsresult(), __func__);
} else {
LOG("session ID=[%zu]%s", result.get_nsString().Length(),
NS_ConvertUTF16toUTF8(result.get_nsString()).get());
promiseHolder.ResolveIfExists(result.get_nsString(), __func__);
}
mPendingSessionPromises.erase(iter);
},
[self, aPromiseId,
this](const mozilla::ipc::ResponseRejectReason& aReason) {
auto iter = mPendingSessionPromises.find(aPromiseId);
if (iter == mPendingSessionPromises.end()) {
return;
}
auto& promiseHolder = iter->second;
promiseHolder.RejectIfExists(NS_ERROR_FAILURE, __func__);
mPendingSessionPromises.erase(iter);
});
}));
return mPendingSessionPromises[aPromiseId].Ensure(__func__);
}
RefPtr<GenericPromise> MFCDMChild::LoadSession(
uint32_t aPromiseId, const KeySystemConfig::SessionType aSessionType,
const nsAString& aSessionId) {
MOZ_ASSERT(mManagerThread);
MOZ_ASSERT(mId > 0, "Should call Init() first and wait for it");
if (mShutdown) {
return GenericPromise::CreateAndReject(NS_ERROR_ABORT, __func__);
}
MOZ_ASSERT(mPendingGenericPromises.find(aPromiseId) ==
mPendingGenericPromises.end());
mPendingGenericPromises.emplace(aPromiseId,
MozPromiseHolder<GenericPromise>{});
INVOKE_ASYNC2(LoadSession, aPromiseId, aSessionType, nsString{aSessionId});
return mPendingGenericPromises[aPromiseId].Ensure(__func__);
}
RefPtr<GenericPromise> MFCDMChild::UpdateSession(uint32_t aPromiseId,
const nsAString& aSessionId,
nsTArray<uint8_t>& aResponse) {
MOZ_ASSERT(mManagerThread);
MOZ_ASSERT(mId > 0, "Should call Init() first and wait for it");
if (mShutdown) {
return GenericPromise::CreateAndReject(NS_ERROR_ABORT, __func__);
}
MOZ_ASSERT(mPendingGenericPromises.find(aPromiseId) ==
mPendingGenericPromises.end());
mPendingGenericPromises.emplace(aPromiseId,
MozPromiseHolder<GenericPromise>{});
INVOKE_ASYNC2(UpdateSession, aPromiseId, nsString{aSessionId},
std::move(aResponse));
return mPendingGenericPromises[aPromiseId].Ensure(__func__);
}
RefPtr<GenericPromise> MFCDMChild::CloseSession(uint32_t aPromiseId,
const nsAString& aSessionId) {
MOZ_ASSERT(mManagerThread);
MOZ_ASSERT(mId > 0, "Should call Init() first and wait for it");
if (mShutdown) {
return GenericPromise::CreateAndReject(NS_ERROR_ABORT, __func__);
}
MOZ_ASSERT(mPendingGenericPromises.find(aPromiseId) ==
mPendingGenericPromises.end());
mPendingGenericPromises.emplace(aPromiseId,
MozPromiseHolder<GenericPromise>{});
INVOKE_ASYNC(CloseSession, aPromiseId, nsString{aSessionId});
return mPendingGenericPromises[aPromiseId].Ensure(__func__);
}
RefPtr<GenericPromise> MFCDMChild::RemoveSession(uint32_t aPromiseId,
const nsAString& aSessionId) {
MOZ_ASSERT(mManagerThread);
MOZ_ASSERT(mId > 0, "Should call Init() first and wait for it");
if (mShutdown) {
return GenericPromise::CreateAndReject(NS_ERROR_ABORT, __func__);
}
MOZ_ASSERT(mPendingGenericPromises.find(aPromiseId) ==
mPendingGenericPromises.end());
mPendingGenericPromises.emplace(aPromiseId,
MozPromiseHolder<GenericPromise>{});
INVOKE_ASYNC(RemoveSession, aPromiseId, nsString{aSessionId});
return mPendingGenericPromises[aPromiseId].Ensure(__func__);
}
RefPtr<GenericPromise> MFCDMChild::SetServerCertificate(
uint32_t aPromiseId, nsTArray<uint8_t>& aCert) {
MOZ_ASSERT(mManagerThread);
MOZ_ASSERT(mId > 0, "Should call Init() first and wait for it");
if (mShutdown) {
return GenericPromise::CreateAndReject(NS_ERROR_ABORT, __func__);
}
MOZ_ASSERT(mPendingGenericPromises.find(aPromiseId) ==
mPendingGenericPromises.end());
mPendingGenericPromises.emplace(aPromiseId,
MozPromiseHolder<GenericPromise>{});
INVOKE_ASYNC(SetServerCertificate, aPromiseId, std::move(aCert));
return mPendingGenericPromises[aPromiseId].Ensure(__func__);
}
RefPtr<GenericPromise> MFCDMChild::GetStatusForPolicy(
uint32_t aPromiseId, const dom::HDCPVersion& aMinHdcpVersion) {
MOZ_ASSERT(mManagerThread);
MOZ_ASSERT(mId > 0, "Should call Init() first and wait for it");
if (mShutdown) {
return GenericPromise::CreateAndReject(NS_ERROR_ABORT, __func__);
}
MOZ_ASSERT(mPendingGenericPromises.find(aPromiseId) ==
mPendingGenericPromises.end());
mPendingGenericPromises.emplace(aPromiseId,
MozPromiseHolder<GenericPromise>{});
INVOKE_ASYNC(GetStatusForPolicy, aPromiseId, aMinHdcpVersion);
return mPendingGenericPromises[aPromiseId].Ensure(__func__);
}
mozilla::ipc::IPCResult MFCDMChild::RecvOnSessionKeyMessage(
const MFCDMKeyMessage& aMessage) {
LOG("RecvOnSessionKeyMessage, sessionId=%s",
NS_ConvertUTF16toUTF8(aMessage.sessionId()).get());
MOZ_ASSERT(mProxyCallback);
mProxyCallback->OnSessionMessage(aMessage);
return IPC_OK();
}
mozilla::ipc::IPCResult MFCDMChild::RecvOnSessionKeyStatusesChanged(
const MFCDMKeyStatusChange& aKeyStatuses) {
LOG("RecvOnSessionKeyStatusesChanged, sessionId=%s",
NS_ConvertUTF16toUTF8(aKeyStatuses.sessionId()).get());
MOZ_ASSERT(mProxyCallback);
mProxyCallback->OnSessionKeyStatusesChange(aKeyStatuses);
return IPC_OK();
}
mozilla::ipc::IPCResult MFCDMChild::RecvOnSessionKeyExpiration(
const MFCDMKeyExpiration& aExpiration) {
LOG("RecvOnSessionKeyExpiration, sessionId=%s",
NS_ConvertUTF16toUTF8(aExpiration.sessionId()).get());
MOZ_ASSERT(mProxyCallback);
mProxyCallback->OnSessionKeyExpiration(aExpiration);
return IPC_OK();
}
#undef SLOG
#undef LOG
} // namespace mozilla