mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
66d1734f54
Also refactors how sandbox support and disabling are handled, and allows simulating a lack of sandbox support with an env var (for testing without rebuilding a kernel).
662 lines
18 KiB
C++
662 lines
18 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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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 "GMPService.h"
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#include "prlog.h"
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#include "GMPParent.h"
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#include "GMPVideoDecoderParent.h"
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#include "nsIObserverService.h"
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#include "GeckoChildProcessHost.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/SyncRunnable.h"
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#include "nsXPCOMPrivate.h"
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#include "mozilla/Services.h"
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#include "nsNativeCharsetUtils.h"
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#include "nsIConsoleService.h"
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#include "mozilla/unused.h"
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#include "GMPDecryptorParent.h"
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#include "GMPAudioDecoderParent.h"
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#include "runnable_utils.h"
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#if defined(XP_LINUX) && defined(MOZ_GMP_SANDBOX)
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#include "mozilla/Sandbox.h"
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#endif
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namespace mozilla {
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#ifdef LOG
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#undef LOG
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#endif
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#ifdef PR_LOGGING
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PRLogModuleInfo*
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GetGMPLog()
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{
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static PRLogModuleInfo *sLog;
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if (!sLog)
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sLog = PR_NewLogModule("GMP");
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return sLog;
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}
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#define LOGD(msg) PR_LOG(GetGMPLog(), PR_LOG_DEBUG, msg)
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#define LOG(level, msg) PR_LOG(GetGMPLog(), (level), msg)
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#else
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#define LOGD(msg)
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#define LOG(leve1, msg)
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#endif
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#ifdef __CLASS__
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#undef __CLASS__
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#endif
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#define __CLASS__ "GMPService"
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namespace gmp {
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static StaticRefPtr<GeckoMediaPluginService> sSingletonService;
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class GMPServiceCreateHelper MOZ_FINAL : public nsRunnable
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{
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nsRefPtr<GeckoMediaPluginService> mService;
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public:
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static already_AddRefed<GeckoMediaPluginService>
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GetOrCreate()
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{
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nsRefPtr<GeckoMediaPluginService> service;
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if (NS_IsMainThread()) {
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service = GetOrCreateOnMainThread();
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} else {
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nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
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MOZ_ASSERT(mainThread);
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nsRefPtr<GMPServiceCreateHelper> createHelper = new GMPServiceCreateHelper();
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mozilla::SyncRunnable::DispatchToThread(mainThread, createHelper, true);
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service = createHelper->mService.forget();
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}
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return service.forget();
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}
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private:
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GMPServiceCreateHelper()
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{
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}
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~GMPServiceCreateHelper()
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{
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MOZ_ASSERT(!mService);
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}
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static already_AddRefed<GeckoMediaPluginService>
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GetOrCreateOnMainThread()
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{
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MOZ_ASSERT(NS_IsMainThread());
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nsRefPtr<GeckoMediaPluginService> service = sSingletonService.get();
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if (!service) {
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service = new GeckoMediaPluginService();
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service->Init();
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sSingletonService = service;
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ClearOnShutdown(&sSingletonService);
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}
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return service.forget();
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}
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NS_IMETHOD
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Run()
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{
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MOZ_ASSERT(NS_IsMainThread());
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mService = GetOrCreateOnMainThread();
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return NS_OK;
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}
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};
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already_AddRefed<GeckoMediaPluginService>
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GeckoMediaPluginService::GetGeckoMediaPluginService()
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{
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return GMPServiceCreateHelper::GetOrCreate();
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}
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NS_IMPL_ISUPPORTS(GeckoMediaPluginService, mozIGeckoMediaPluginService, nsIObserver)
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GeckoMediaPluginService::GeckoMediaPluginService()
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: mMutex("GeckoMediaPluginService::mMutex")
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, mShuttingDown(false)
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, mShuttingDownOnGMPThread(false)
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{
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MOZ_ASSERT(NS_IsMainThread());
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}
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GeckoMediaPluginService::~GeckoMediaPluginService()
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{
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MOZ_ASSERT(mPlugins.IsEmpty());
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}
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void
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GeckoMediaPluginService::Init()
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{
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MOZ_ASSERT(NS_IsMainThread());
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nsCOMPtr<nsIObserverService> obsService = mozilla::services::GetObserverService();
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MOZ_ASSERT(obsService);
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MOZ_ALWAYS_TRUE(NS_SUCCEEDED(obsService->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false)));
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MOZ_ALWAYS_TRUE(NS_SUCCEEDED(obsService->AddObserver(this, NS_XPCOM_SHUTDOWN_THREADS_OBSERVER_ID, false)));
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nsCOMPtr<nsIPrefBranch> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID);
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if (prefs) {
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prefs->AddObserver("media.gmp.plugin.crash", this, false);
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}
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// Kick off scanning for plugins
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nsCOMPtr<nsIThread> thread;
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unused << GetThread(getter_AddRefs(thread));
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}
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NS_IMETHODIMP
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GeckoMediaPluginService::Observe(nsISupports* aSubject,
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const char* aTopic,
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const char16_t* aSomeData)
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{
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if (!strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID)) {
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nsCOMPtr<nsIPrefBranch> branch( do_QueryInterface(aSubject) );
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if (branch) {
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bool crashNow = false;
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if (NS_LITERAL_STRING("media.gmp.plugin.crash").Equals(aSomeData)) {
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branch->GetBoolPref("media.gmp.plugin.crash", &crashNow);
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}
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if (crashNow) {
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nsCOMPtr<nsIThread> gmpThread;
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{
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MutexAutoLock lock(mMutex);
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gmpThread = mGMPThread;
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}
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if (gmpThread) {
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gmpThread->Dispatch(WrapRunnable(this, &GeckoMediaPluginService::CrashPlugins),
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NS_DISPATCH_NORMAL);
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}
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}
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}
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} else if (!strcmp(NS_XPCOM_SHUTDOWN_OBSERVER_ID, aTopic)) {
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nsCOMPtr<nsIThread> gmpThread;
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{
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MutexAutoLock lock(mMutex);
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MOZ_ASSERT(!mShuttingDown);
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mShuttingDown = true;
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gmpThread = mGMPThread;
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}
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if (gmpThread) {
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gmpThread->Dispatch(NS_NewRunnableMethod(this, &GeckoMediaPluginService::UnloadPlugins),
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NS_DISPATCH_SYNC);
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} else {
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MOZ_ASSERT(mPlugins.IsEmpty());
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}
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} else if (!strcmp(NS_XPCOM_SHUTDOWN_THREADS_OBSERVER_ID, aTopic)) {
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nsCOMPtr<nsIThread> gmpThread;
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{
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MutexAutoLock lock(mMutex);
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MOZ_ASSERT(mShuttingDown);
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mGMPThread.swap(gmpThread);
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}
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if (gmpThread) {
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gmpThread->Shutdown();
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}
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}
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return NS_OK;
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}
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// always call with getter_AddRefs, because it does
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NS_IMETHODIMP
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GeckoMediaPluginService::GetThread(nsIThread** aThread)
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{
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MOZ_ASSERT(aThread);
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// This can be called from any thread.
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MutexAutoLock lock(mMutex);
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if (!mGMPThread) {
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// Don't allow the thread to be created after shutdown has started.
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if (mShuttingDown) {
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return NS_ERROR_FAILURE;
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}
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nsresult rv = NS_NewNamedThread("GMPThread", getter_AddRefs(mGMPThread));
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if (NS_FAILED(rv)) {
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return rv;
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}
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// Tell the thread to initialize plugins
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mGMPThread->Dispatch(NS_NewRunnableMethod(this, &GeckoMediaPluginService::LoadFromEnvironment), NS_DISPATCH_NORMAL);
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}
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NS_ADDREF(mGMPThread);
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*aThread = mGMPThread;
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return NS_OK;
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}
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NS_IMETHODIMP
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GeckoMediaPluginService::GetGMPAudioDecoder(nsTArray<nsCString>* aTags,
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const nsAString& aOrigin,
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GMPAudioDecoderProxy** aGMPAD)
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{
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MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
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NS_ENSURE_ARG(aTags && aTags->Length() > 0);
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NS_ENSURE_ARG(aGMPAD);
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if (mShuttingDownOnGMPThread) {
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return NS_ERROR_FAILURE;
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}
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nsRefPtr<GMPParent> gmp = SelectPluginForAPI(aOrigin,
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NS_LITERAL_CSTRING("decode-audio"),
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*aTags);
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if (!gmp) {
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return NS_ERROR_FAILURE;
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}
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GMPAudioDecoderParent* gmpADP;
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nsresult rv = gmp->GetGMPAudioDecoder(&gmpADP);
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if (NS_FAILED(rv)) {
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return rv;
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}
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*aGMPAD = gmpADP;
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return NS_OK;
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}
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NS_IMETHODIMP
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GeckoMediaPluginService::GetGMPVideoDecoder(nsTArray<nsCString>* aTags,
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const nsAString& aOrigin,
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GMPVideoHost** aOutVideoHost,
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GMPVideoDecoderProxy** aGMPVD)
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{
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MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
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NS_ENSURE_ARG(aTags && aTags->Length() > 0);
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NS_ENSURE_ARG(aOutVideoHost);
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NS_ENSURE_ARG(aGMPVD);
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if (mShuttingDownOnGMPThread) {
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return NS_ERROR_FAILURE;
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}
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nsRefPtr<GMPParent> gmp = SelectPluginForAPI(aOrigin,
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NS_LITERAL_CSTRING("decode-video"),
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*aTags);
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#ifdef PR_LOGGING
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nsCString api = (*aTags)[0];
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LOGD(("%s: %p returning %p for api %s", __FUNCTION__, (void *)this, (void *)gmp, api.get()));
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#endif
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if (!gmp) {
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return NS_ERROR_FAILURE;
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}
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GMPVideoDecoderParent* gmpVDP;
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nsresult rv = gmp->GetGMPVideoDecoder(&gmpVDP);
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if (NS_FAILED(rv)) {
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return rv;
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}
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*aGMPVD = gmpVDP;
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*aOutVideoHost = &gmpVDP->Host();
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return NS_OK;
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}
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NS_IMETHODIMP
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GeckoMediaPluginService::GetGMPVideoEncoder(nsTArray<nsCString>* aTags,
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const nsAString& aOrigin,
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GMPVideoHost** aOutVideoHost,
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GMPVideoEncoderProxy** aGMPVE)
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{
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MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
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NS_ENSURE_ARG(aTags && aTags->Length() > 0);
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NS_ENSURE_ARG(aOutVideoHost);
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NS_ENSURE_ARG(aGMPVE);
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if (mShuttingDownOnGMPThread) {
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return NS_ERROR_FAILURE;
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}
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nsRefPtr<GMPParent> gmp = SelectPluginForAPI(aOrigin,
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NS_LITERAL_CSTRING("encode-video"),
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*aTags);
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#ifdef PR_LOGGING
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nsCString api = (*aTags)[0];
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LOGD(("%s: %p returning %p for api %s", __FUNCTION__, (void *)this, (void *)gmp, api.get()));
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#endif
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if (!gmp) {
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return NS_ERROR_FAILURE;
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}
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GMPVideoEncoderParent* gmpVEP;
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nsresult rv = gmp->GetGMPVideoEncoder(&gmpVEP);
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if (NS_FAILED(rv)) {
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return rv;
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}
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*aGMPVE = gmpVEP;
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*aOutVideoHost = &gmpVEP->Host();
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return NS_OK;
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}
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NS_IMETHODIMP
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GeckoMediaPluginService::GetGMPDecryptor(nsTArray<nsCString>* aTags,
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const nsAString& aOrigin,
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GMPDecryptorProxy** aDecryptor)
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{
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MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
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NS_ENSURE_ARG(aTags && aTags->Length() > 0);
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NS_ENSURE_ARG(aDecryptor);
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if (mShuttingDownOnGMPThread) {
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return NS_ERROR_FAILURE;
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}
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nsRefPtr<GMPParent> gmp = SelectPluginForAPI(aOrigin,
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NS_LITERAL_CSTRING("eme-decrypt"),
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*aTags);
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if (!gmp) {
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return NS_ERROR_FAILURE;
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}
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GMPDecryptorParent* ksp;
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nsresult rv = gmp->GetGMPDecryptor(&ksp);
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if (NS_FAILED(rv)) {
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return rv;
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}
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*aDecryptor = static_cast<GMPDecryptorProxy*>(ksp);
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return NS_OK;
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}
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void
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GeckoMediaPluginService::UnloadPlugins()
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{
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MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
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MOZ_ASSERT(!mShuttingDownOnGMPThread);
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mShuttingDownOnGMPThread = true;
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MutexAutoLock lock(mMutex);
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// Note: CloseActive is async; it will actually finish
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// shutting down when all the plugins have unloaded.
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for (uint32_t i = 0; i < mPlugins.Length(); i++) {
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mPlugins[i]->CloseActive(true);
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}
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mPlugins.Clear();
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}
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void
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GeckoMediaPluginService::CrashPlugins()
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{
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MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
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MutexAutoLock lock(mMutex);
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for (uint32_t i = 0; i < mPlugins.Length(); i++) {
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mPlugins[i]->Crash();
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}
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}
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void
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GeckoMediaPluginService::LoadFromEnvironment()
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{
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MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
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const char* env = PR_GetEnv("MOZ_GMP_PATH");
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if (!env || !*env) {
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return;
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}
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nsString allpaths;
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if (NS_WARN_IF(NS_FAILED(NS_CopyNativeToUnicode(nsDependentCString(env), allpaths)))) {
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return;
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}
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uint32_t pos = 0;
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while (pos < allpaths.Length()) {
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// Loop over multiple path entries separated by colons (*nix) or
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// semicolons (Windows)
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int32_t next = allpaths.FindChar(XPCOM_ENV_PATH_SEPARATOR[0], pos);
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if (next == -1) {
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AddOnGMPThread(nsDependentSubstring(allpaths, pos));
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break;
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} else {
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AddOnGMPThread(nsDependentSubstring(allpaths, pos, next - pos));
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pos = next + 1;
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}
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}
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}
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NS_IMETHODIMP
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GeckoMediaPluginService::PathRunnable::Run()
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{
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if (mAdd) {
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mService->AddOnGMPThread(mPath);
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} else {
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mService->RemoveOnGMPThread(mPath);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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GeckoMediaPluginService::AddPluginDirectory(const nsAString& aDirectory)
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{
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MOZ_ASSERT(NS_IsMainThread());
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#if defined(XP_LINUX) && defined(MOZ_GMP_SANDBOX)
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if (!mozilla::CanSandboxMediaPlugin()) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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#endif
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nsCOMPtr<nsIThread> thread;
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nsresult rv = GetThread(getter_AddRefs(thread));
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if (NS_FAILED(rv)) {
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return rv;
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}
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nsCOMPtr<nsIRunnable> r = new PathRunnable(this, aDirectory, true);
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thread->Dispatch(r, NS_DISPATCH_NORMAL);
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return NS_OK;
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}
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NS_IMETHODIMP
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GeckoMediaPluginService::RemovePluginDirectory(const nsAString& aDirectory)
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{
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MOZ_ASSERT(NS_IsMainThread());
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nsCOMPtr<nsIThread> thread;
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nsresult rv = GetThread(getter_AddRefs(thread));
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if (NS_FAILED(rv)) {
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return rv;
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}
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nsCOMPtr<nsIRunnable> r = new PathRunnable(this, aDirectory, false);
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thread->Dispatch(r, NS_DISPATCH_NORMAL);
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return NS_OK;
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}
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NS_IMETHODIMP
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GeckoMediaPluginService::HasPluginForAPI(const nsAString& aOrigin,
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const nsACString& aAPI,
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nsTArray<nsCString>* aTags,
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bool* aResult)
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{
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NS_ENSURE_ARG(aTags && aTags->Length() > 0);
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NS_ENSURE_ARG(aResult);
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nsCString temp(aAPI);
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GMPParent *parent = SelectPluginForAPI(aOrigin, temp, *aTags);
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*aResult = !!parent;
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return NS_OK;
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}
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GMPParent*
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GeckoMediaPluginService::SelectPluginForAPI(const nsAString& aOrigin,
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const nsCString& aAPI,
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const nsTArray<nsCString>& aTags)
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{
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MutexAutoLock lock(mMutex);
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for (uint32_t i = 0; i < mPlugins.Length(); i++) {
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GMPParent* gmp = mPlugins[i];
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bool supportsAllTags = true;
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for (uint32_t t = 0; t < aTags.Length(); t++) {
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const nsCString& tag = aTags[t];
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if (!gmp->SupportsAPI(aAPI, tag)) {
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supportsAllTags = false;
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break;
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}
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}
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if (!supportsAllTags) {
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continue;
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}
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if (aOrigin.IsEmpty()) {
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if (gmp->CanBeSharedCrossOrigin()) {
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return gmp;
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}
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} else if (gmp->CanBeUsedFrom(aOrigin)) {
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if (!aOrigin.IsEmpty()) {
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gmp->SetOrigin(aOrigin);
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}
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return gmp;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
class CreateGMPParentTask : public nsRunnable {
|
|
public:
|
|
NS_IMETHOD Run() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
mParent = new GMPParent();
|
|
return NS_OK;
|
|
}
|
|
already_AddRefed<GMPParent> GetParent() {
|
|
return mParent.forget();
|
|
}
|
|
private:
|
|
nsRefPtr<GMPParent> mParent;
|
|
};
|
|
|
|
GMPParent*
|
|
GeckoMediaPluginService::ClonePlugin(const GMPParent* aOriginal)
|
|
{
|
|
MOZ_ASSERT(aOriginal);
|
|
|
|
// The GMPParent inherits from IToplevelProtocol, which must be created
|
|
// on the main thread to be threadsafe. See Bug 1035653.
|
|
nsRefPtr<CreateGMPParentTask> task(new CreateGMPParentTask());
|
|
if (!NS_IsMainThread()) {
|
|
nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
|
|
MOZ_ASSERT(mainThread);
|
|
mozilla::SyncRunnable::DispatchToThread(mainThread, task);
|
|
}
|
|
|
|
nsRefPtr<GMPParent> gmp = task->GetParent();
|
|
nsresult rv = gmp->CloneFrom(aOriginal);
|
|
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Can't Create GMPParent");
|
|
return nullptr;
|
|
}
|
|
|
|
MutexAutoLock lock(mMutex);
|
|
mPlugins.AppendElement(gmp);
|
|
|
|
return gmp.get();
|
|
}
|
|
|
|
void
|
|
GeckoMediaPluginService::AddOnGMPThread(const nsAString& aDirectory)
|
|
{
|
|
MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
|
|
LOGD(("%s::%s: %s", __CLASS__, __FUNCTION__, NS_LossyConvertUTF16toASCII(aDirectory).get()));
|
|
|
|
nsCOMPtr<nsIFile> directory;
|
|
nsresult rv = NS_NewLocalFile(aDirectory, false, getter_AddRefs(directory));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return;
|
|
}
|
|
|
|
// The GMPParent inherits from IToplevelProtocol, which must be created
|
|
// on the main thread to be threadsafe. See Bug 1035653.
|
|
nsRefPtr<CreateGMPParentTask> task(new CreateGMPParentTask());
|
|
nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
|
|
MOZ_ASSERT(mainThread);
|
|
mozilla::SyncRunnable::DispatchToThread(mainThread, task);
|
|
nsRefPtr<GMPParent> gmp = task->GetParent();
|
|
rv = gmp->Init(this, directory);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Can't Create GMPParent");
|
|
return;
|
|
}
|
|
|
|
MutexAutoLock lock(mMutex);
|
|
mPlugins.AppendElement(gmp);
|
|
}
|
|
|
|
void
|
|
GeckoMediaPluginService::RemoveOnGMPThread(const nsAString& aDirectory)
|
|
{
|
|
MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
|
|
LOGD(("%s::%s: %s", __CLASS__, __FUNCTION__, NS_LossyConvertUTF16toASCII(aDirectory).get()));
|
|
|
|
nsCOMPtr<nsIFile> directory;
|
|
nsresult rv = NS_NewLocalFile(aDirectory, false, getter_AddRefs(directory));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return;
|
|
}
|
|
|
|
MutexAutoLock lock(mMutex);
|
|
for (uint32_t i = 0; i < mPlugins.Length(); ++i) {
|
|
nsCOMPtr<nsIFile> pluginpath = mPlugins[i]->GetDirectory();
|
|
bool equals;
|
|
if (NS_SUCCEEDED(directory->Equals(pluginpath, &equals)) && equals) {
|
|
mPlugins[i]->CloseActive(true);
|
|
mPlugins.RemoveElementAt(i);
|
|
return;
|
|
}
|
|
}
|
|
NS_WARNING("Removing GMP which was never added.");
|
|
nsCOMPtr<nsIConsoleService> cs = do_GetService(NS_CONSOLESERVICE_CONTRACTID);
|
|
cs->LogStringMessage(MOZ_UTF16("Removing GMP which was never added."));
|
|
}
|
|
|
|
// May remove when Bug 1043671 is fixed
|
|
static void Dummy(nsRefPtr<GMPParent>& aOnDeathsDoor)
|
|
{
|
|
// exists solely to do nothing and let the Runnable kill the GMPParent
|
|
// when done.
|
|
}
|
|
|
|
void
|
|
GeckoMediaPluginService::ReAddOnGMPThread(nsRefPtr<GMPParent>& aOld)
|
|
{
|
|
MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
|
|
LOGD(("%s::%s: %p", __CLASS__, __FUNCTION__, (void*) aOld));
|
|
|
|
nsRefPtr<GMPParent> gmp = ClonePlugin(aOld);
|
|
// Note: both are now in the list
|
|
// Until we give up the GMPThread, we're safe even if we unlock temporarily
|
|
// since off-main-thread users just test for existance; they don't modify the list.
|
|
MutexAutoLock lock(mMutex);
|
|
mPlugins.RemoveElement(aOld);
|
|
|
|
// Schedule aOld to be destroyed. We can't destroy it from here since we
|
|
// may be inside ActorDestroyed() for it.
|
|
NS_DispatchToCurrentThread(WrapRunnableNM(&Dummy, aOld));
|
|
}
|
|
|
|
} // namespace gmp
|
|
} // namespace mozilla
|