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gecko-dev
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gecko-dev/dom/media/gmp/GMPService.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "GMPService.h"
#include "GMPServiceParent.h"
#include "GMPServiceChild.h"
#include "GMPContentParent.h"
#include "prio.h"
#include "mozilla/Logging.h"
#include "GMPParent.h"
#include "GMPVideoDecoderParent.h"
#include "nsIObserverService.h"
#include "GeckoChildProcessHost.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/SyncRunnable.h"
#include "nsXPCOMPrivate.h"
#include "mozilla/Services.h"
#include "nsNativeCharsetUtils.h"
#include "nsIXULAppInfo.h"
#include "nsIConsoleService.h"
#include "mozilla/Unused.h"
#include "GMPDecryptorParent.h"
#include "nsComponentManagerUtils.h"
#include "runnable_utils.h"
#include "VideoUtils.h"
#if defined(XP_LINUX) && defined(MOZ_GMP_SANDBOX)
#include "mozilla/SandboxInfo.h"
#endif
#include "nsAppDirectoryServiceDefs.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
#include "nsHashKeys.h"
#include "nsIFile.h"
#include "nsISimpleEnumerator.h"
#include "nsThreadUtils.h"
#include "GMPCrashHelper.h"
#include "mozilla/dom/PluginCrashedEvent.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/Attributes.h"
#include "mozilla/SystemGroup.h"
namespace mozilla {
#ifdef LOG
#undef LOG
#endif
LogModule*
GetGMPLog()
{
static LazyLogModule sLog("GMP");
return sLog;
}
#define LOGD(msg) MOZ_LOG(GetGMPLog(), mozilla::LogLevel::Debug, msg)
#define LOG(level, msg) MOZ_LOG(GetGMPLog(), (level), msg)
#ifdef __CLASS__
#undef __CLASS__
#endif
#define __CLASS__ "GMPService"
namespace gmp {
static StaticRefPtr<GeckoMediaPluginService> sSingletonService;
class GMPServiceCreateHelper final : public mozilla::Runnable
{
RefPtr<GeckoMediaPluginService> mService;
public:
static already_AddRefed<GeckoMediaPluginService>
GetOrCreate()
{
RefPtr<GeckoMediaPluginService> service;
if (NS_IsMainThread()) {
service = GetOrCreateOnMainThread();
} else {
RefPtr<GMPServiceCreateHelper> createHelper = new GMPServiceCreateHelper();
mozilla::SyncRunnable::DispatchToThread(
SystemGroup::EventTargetFor(mozilla::TaskCategory::Other),
createHelper, true);
service = createHelper->mService.forget();
}
return service.forget();
}
private:
GMPServiceCreateHelper()
: Runnable("GMPServiceCreateHelper")
{
}
~GMPServiceCreateHelper()
{
MOZ_ASSERT(!mService);
}
static already_AddRefed<GeckoMediaPluginService>
GetOrCreateOnMainThread()
{
MOZ_ASSERT(NS_IsMainThread());
if (!sSingletonService) {
if (XRE_IsParentProcess()) {
RefPtr<GeckoMediaPluginServiceParent> service =
new GeckoMediaPluginServiceParent();
service->Init();
sSingletonService = service;
} else {
RefPtr<GeckoMediaPluginServiceChild> service =
new GeckoMediaPluginServiceChild();
service->Init();
sSingletonService = service;
}
ClearOnShutdown(&sSingletonService);
}
RefPtr<GeckoMediaPluginService> service = sSingletonService.get();
return service.forget();
}
NS_IMETHOD
Run() override
{
MOZ_ASSERT(NS_IsMainThread());
mService = GetOrCreateOnMainThread();
return NS_OK;
}
};
already_AddRefed<GeckoMediaPluginService>
GeckoMediaPluginService::GetGeckoMediaPluginService()
{
return GMPServiceCreateHelper::GetOrCreate();
}
NS_IMPL_ISUPPORTS(GeckoMediaPluginService, mozIGeckoMediaPluginService, nsIObserver)
GeckoMediaPluginService::GeckoMediaPluginService()
: mMutex("GeckoMediaPluginService::mMutex")
, mGMPThreadShutdown(false)
, mShuttingDownOnGMPThread(false)
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIXULAppInfo> appInfo = do_GetService("@mozilla.org/xre/app-info;1");
if (appInfo) {
nsAutoCString version;
nsAutoCString buildID;
if (NS_SUCCEEDED(appInfo->GetVersion(version)) &&
NS_SUCCEEDED(appInfo->GetAppBuildID(buildID))) {
LOGD(("GeckoMediaPluginService created; Gecko version=%s buildID=%s",
version.get(), buildID.get()));
}
}
}
GeckoMediaPluginService::~GeckoMediaPluginService()
{
}
NS_IMETHODIMP
GeckoMediaPluginService::RunPluginCrashCallbacks(uint32_t aPluginId,
const nsACString& aPluginName)
{
MOZ_ASSERT(NS_IsMainThread());
LOGD(("%s::%s(%i)", __CLASS__, __FUNCTION__, aPluginId));
nsAutoPtr<nsTArray<RefPtr<GMPCrashHelper>>> helpers;
{
MutexAutoLock lock(mMutex);
mPluginCrashHelpers.Remove(aPluginId, &helpers);
}
if (!helpers) {
LOGD(("%s::%s(%i) No crash helpers, not handling crash.", __CLASS__, __FUNCTION__, aPluginId));
return NS_OK;
}
for (const auto& helper : *helpers) {
nsCOMPtr<nsPIDOMWindowInner> window = helper->GetPluginCrashedEventTarget();
if (NS_WARN_IF(!window)) {
continue;
}
nsCOMPtr<nsIDocument> document(window->GetExtantDoc());
if (NS_WARN_IF(!document)) {
continue;
}
dom::PluginCrashedEventInit init;
init.mPluginID = aPluginId;
init.mBubbles = true;
init.mCancelable = true;
init.mGmpPlugin = true;
CopyUTF8toUTF16(aPluginName, init.mPluginName);
init.mSubmittedCrashReport = false;
RefPtr<dom::PluginCrashedEvent> event =
dom::PluginCrashedEvent::Constructor(document,
NS_LITERAL_STRING("PluginCrashed"),
init);
event->SetTrusted(true);
event->WidgetEventPtr()->mFlags.mOnlyChromeDispatch = true;
EventDispatcher::DispatchDOMEvent(window, nullptr, event, nullptr, nullptr);
}
return NS_OK;
}
nsresult
GeckoMediaPluginService::Init()
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIObserverService> obsService = mozilla::services::GetObserverService();
MOZ_ASSERT(obsService);
MOZ_ALWAYS_SUCCEEDS(obsService->AddObserver(this, NS_XPCOM_SHUTDOWN_THREADS_OBSERVER_ID, false));
// Kick off scanning for plugins
nsCOMPtr<nsIThread> thread;
return GetThread(getter_AddRefs(thread));
}
RefPtr<GetCDMParentPromise>
GeckoMediaPluginService::GetCDM(const NodeId& aNodeId,
nsTArray<nsCString> aTags,
GMPCrashHelper* aHelper)
{
MOZ_ASSERT(mGMPThread->EventTarget()->IsOnCurrentThread());
if (mShuttingDownOnGMPThread || aTags.IsEmpty()) {
return GetCDMParentPromise::CreateAndReject(NS_ERROR_FAILURE, __func__);
}
typedef MozPromiseHolder<GetCDMParentPromise> PromiseHolder;
PromiseHolder* rawHolder(new PromiseHolder());
RefPtr<GetCDMParentPromise> promise = rawHolder->Ensure(__func__);
RefPtr<AbstractThread> thread(GetAbstractGMPThread());
RefPtr<GMPCrashHelper> helper(aHelper);
GetContentParent(
aHelper, aNodeId, NS_LITERAL_CSTRING(CHROMIUM_CDM_API), aTags)
->Then(thread,
__func__,
[rawHolder, helper](RefPtr<GMPContentParent::CloseBlocker> wrapper) {
RefPtr<GMPContentParent> parent = wrapper->mParent;
UniquePtr<PromiseHolder> holder(rawHolder);
RefPtr<ChromiumCDMParent> cdm = parent->GetChromiumCDM();
if (!parent) {
holder->Reject(NS_ERROR_FAILURE, __func__);
return;
}
if (helper) {
cdm->SetCrashHelper(helper);
}
holder->Resolve(cdm, __func__);
},
[rawHolder] {
UniquePtr<PromiseHolder> holder(rawHolder);
holder->Reject(NS_ERROR_FAILURE, __func__);
});
return promise;
}
void
GeckoMediaPluginService::ShutdownGMPThread()
{
LOGD(("%s::%s", __CLASS__, __FUNCTION__));
nsCOMPtr<nsIThread> gmpThread;
{
MutexAutoLock lock(mMutex);
mGMPThreadShutdown = true;
mGMPThread.swap(gmpThread);
mAbstractGMPThread = nullptr;
}
if (gmpThread) {
gmpThread->Shutdown();
}
}
nsresult
GeckoMediaPluginService::GMPDispatch(nsIRunnable* event,
uint32_t flags)
{
nsCOMPtr<nsIRunnable> r(event);
return GMPDispatch(r.forget());
}
nsresult
GeckoMediaPluginService::GMPDispatch(already_AddRefed<nsIRunnable> event,
uint32_t flags)
{
nsCOMPtr<nsIRunnable> r(event);
nsCOMPtr<nsIThread> thread;
nsresult rv = GetThread(getter_AddRefs(thread));
if (NS_FAILED(rv)) {
return rv;
}
return thread->Dispatch(r, flags);
}
// always call with getter_AddRefs, because it does
NS_IMETHODIMP
GeckoMediaPluginService::GetThread(nsIThread** aThread)
{
MOZ_ASSERT(aThread);
// This can be called from any thread.
MutexAutoLock lock(mMutex);
if (!mGMPThread) {
// Don't allow the thread to be created after shutdown has started.
if (mGMPThreadShutdown) {
return NS_ERROR_FAILURE;
}
nsresult rv = NS_NewNamedThread("GMPThread", getter_AddRefs(mGMPThread));
if (NS_FAILED(rv)) {
return rv;
}
mAbstractGMPThread = AbstractThread::CreateXPCOMThreadWrapper(mGMPThread, false);
// Tell the thread to initialize plugins
InitializePlugins(mAbstractGMPThread.get());
}
nsCOMPtr<nsIThread> copy = mGMPThread;
copy.forget(aThread);
return NS_OK;
}
RefPtr<AbstractThread>
GeckoMediaPluginService::GetAbstractGMPThread()
{
MutexAutoLock lock(mMutex);
return mAbstractGMPThread;
}
NS_IMETHODIMP
GeckoMediaPluginService::GetDecryptingGMPVideoDecoder(GMPCrashHelper* aHelper,
nsTArray<nsCString>* aTags,
const nsACString& aNodeId,
UniquePtr<GetGMPVideoDecoderCallback>&& aCallback,
uint32_t aDecryptorId)
{
MOZ_ASSERT(mGMPThread->EventTarget()->IsOnCurrentThread());
NS_ENSURE_ARG(aTags && aTags->Length() > 0);
NS_ENSURE_ARG(aCallback);
if (mShuttingDownOnGMPThread) {
return NS_ERROR_FAILURE;
}
GetGMPVideoDecoderCallback* rawCallback = aCallback.release();
RefPtr<AbstractThread> thread(GetAbstractGMPThread());
RefPtr<GMPCrashHelper> helper(aHelper);
GetContentParent(aHelper, aNodeId, NS_LITERAL_CSTRING(GMP_API_VIDEO_DECODER), *aTags)
->Then(thread, __func__,
[rawCallback, helper, aDecryptorId](RefPtr<GMPContentParent::CloseBlocker> wrapper) {
RefPtr<GMPContentParent> parent = wrapper->mParent;
UniquePtr<GetGMPVideoDecoderCallback> callback(rawCallback);
GMPVideoDecoderParent* actor = nullptr;
GMPVideoHostImpl* host = nullptr;
if (parent && NS_SUCCEEDED(parent->GetGMPVideoDecoder(&actor, aDecryptorId))) {
host = &(actor->Host());
actor->SetCrashHelper(helper);
}
callback->Done(actor, host);
},
[rawCallback] {
UniquePtr<GetGMPVideoDecoderCallback> callback(rawCallback);
callback->Done(nullptr, nullptr);
});
return NS_OK;
}
NS_IMETHODIMP
GeckoMediaPluginService::GetGMPVideoEncoder(GMPCrashHelper* aHelper,
nsTArray<nsCString>* aTags,
const nsACString& aNodeId,
UniquePtr<GetGMPVideoEncoderCallback>&& aCallback)
{
MOZ_ASSERT(mGMPThread->EventTarget()->IsOnCurrentThread());
NS_ENSURE_ARG(aTags && aTags->Length() > 0);
NS_ENSURE_ARG(aCallback);
if (mShuttingDownOnGMPThread) {
return NS_ERROR_FAILURE;
}
GetGMPVideoEncoderCallback* rawCallback = aCallback.release();
RefPtr<AbstractThread> thread(GetAbstractGMPThread());
RefPtr<GMPCrashHelper> helper(aHelper);
GetContentParent(aHelper, aNodeId, NS_LITERAL_CSTRING(GMP_API_VIDEO_ENCODER), *aTags)
->Then(thread, __func__,
[rawCallback, helper](RefPtr<GMPContentParent::CloseBlocker> wrapper) {
RefPtr<GMPContentParent> parent = wrapper->mParent;
UniquePtr<GetGMPVideoEncoderCallback> callback(rawCallback);
GMPVideoEncoderParent* actor = nullptr;
GMPVideoHostImpl* host = nullptr;
if (parent && NS_SUCCEEDED(parent->GetGMPVideoEncoder(&actor))) {
host = &(actor->Host());
actor->SetCrashHelper(helper);
}
callback->Done(actor, host);
},
[rawCallback] {
UniquePtr<GetGMPVideoEncoderCallback> callback(rawCallback);
callback->Done(nullptr, nullptr);
});
return NS_OK;
}
NS_IMETHODIMP
GeckoMediaPluginService::GetGMPDecryptor(GMPCrashHelper* aHelper,
nsTArray<nsCString>* aTags,
const nsACString& aNodeId,
UniquePtr<GetGMPDecryptorCallback>&& aCallback)
{
#if defined(XP_LINUX) && defined(MOZ_GMP_SANDBOX)
if (!SandboxInfo::Get().CanSandboxMedia()) {
NS_WARNING("GeckoMediaPluginService::GetGMPDecryptor: "
"EME decryption not available without sandboxing support.");
return NS_ERROR_NOT_AVAILABLE;
}
#endif
MOZ_ASSERT(mGMPThread->EventTarget()->IsOnCurrentThread());
NS_ENSURE_ARG(aTags && aTags->Length() > 0);
NS_ENSURE_ARG(aCallback);
if (mShuttingDownOnGMPThread) {
return NS_ERROR_FAILURE;
}
GetGMPDecryptorCallback* rawCallback = aCallback.release();
RefPtr<AbstractThread> thread(GetAbstractGMPThread());
RefPtr<GMPCrashHelper> helper(aHelper);
GetContentParent(aHelper, aNodeId, NS_LITERAL_CSTRING(GMP_API_DECRYPTOR), *aTags)
->Then(thread, __func__,
[rawCallback, helper](RefPtr<GMPContentParent::CloseBlocker> wrapper) {
RefPtr<GMPContentParent> parent = wrapper->mParent;
UniquePtr<GetGMPDecryptorCallback> callback(rawCallback);
GMPDecryptorParent* actor = nullptr;
if (parent && NS_SUCCEEDED(parent->GetGMPDecryptor(&actor))) {
actor->SetCrashHelper(helper);
}
callback->Done(actor);
},
[rawCallback] {
UniquePtr<GetGMPDecryptorCallback> callback(rawCallback);
callback->Done(nullptr);
});
return NS_OK;
}
void
GeckoMediaPluginService::ConnectCrashHelper(uint32_t aPluginId, GMPCrashHelper* aHelper)
{
if (!aHelper) {
return;
}
MutexAutoLock lock(mMutex);
nsTArray<RefPtr<GMPCrashHelper>>* helpers;
if (!mPluginCrashHelpers.Get(aPluginId, &helpers)) {
helpers = new nsTArray<RefPtr<GMPCrashHelper>>();
mPluginCrashHelpers.Put(aPluginId, helpers);
} else if (helpers->Contains(aHelper)) {
return;
}
helpers->AppendElement(aHelper);
}
void GeckoMediaPluginService::DisconnectCrashHelper(GMPCrashHelper* aHelper)
{
if (!aHelper) {
return;
}
MutexAutoLock lock(mMutex);
for (auto iter = mPluginCrashHelpers.Iter(); !iter.Done(); iter.Next()) {
nsTArray<RefPtr<GMPCrashHelper>>* helpers = iter.Data();
if (!helpers->Contains(aHelper)) {
continue;
}
helpers->RemoveElement(aHelper);
MOZ_ASSERT(!helpers->Contains(aHelper)); // Ensure there aren't duplicates.
if (helpers->IsEmpty()) {
iter.Remove();
}
}
}
} // namespace gmp
} // namespace mozilla
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