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content / browser / browser_context_impl.cc [blame]
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/browser_context_impl.h"
#include <utility>
#include "base/memory/ref_counted.h"
#include "base/task/sequenced_task_runner.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "content/browser/background_sync/background_sync_scheduler.h"
#include "content/browser/browsing_data/browsing_data_remover_impl.h"
#include "content/browser/download/download_manager_impl.h"
#include "content/browser/in_memory_federated_permission_context.h"
#include "content/browser/permissions/permission_controller_impl.h"
#include "content/browser/preloading/prefetch/prefetch_service.h"
#include "content/browser/renderer_host/navigation_transitions/navigation_entry_screenshot_cache.h"
#include "content/browser/renderer_host/navigation_transitions/navigation_entry_screenshot_manager.h"
#include "content/browser/renderer_host/navigation_transitions/navigation_transition_config.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/speech/tts_controller_impl.h"
#include "content/browser/storage_partition_impl.h"
#include "content/browser/storage_partition_impl_map.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/shared_worker_service.h"
#include "media/capabilities/webrtc_video_stats_db_impl.h"
#include "media/learning/common/media_learning_tasks.h"
#include "media/learning/impl/learning_session_impl.h"
#include "media/mojo/services/video_decode_perf_history.h"
#include "media/mojo/services/webrtc_video_perf_history.h"
#if BUILDFLAG(IS_CHROMEOS_ASH)
#include "storage/browser/file_system/external_mount_points.h"
#endif
namespace content {
namespace {
void NotifyContextWillBeDestroyed(StoragePartition* partition) {
static_cast<StoragePartitionImpl*>(partition)
->OnBrowserContextWillBeDestroyed();
}
void RegisterMediaLearningTask(
media::learning::LearningSessionImpl* learning_session,
const media::learning::LearningTask& task) {
// The RegisterTask method cannot be directly used in base::Bind, because it
// provides a default argument value for the 2nd parameter
// (`feature_provider`).
learning_session->RegisterTask(task);
}
// Kill switch that controls whether to cancel navigations as part of
// BrowserContext shutdown. See https://crbug.com/40274462.
BASE_FEATURE(kCancelNavigationsDuringBrowserContextShutdown,
"CancelNavigationsDuringBrowserContextShutdown",
base::FEATURE_ENABLED_BY_DEFAULT);
} // namespace
// static
BrowserContextImpl* BrowserContextImpl::From(BrowserContext* self) {
return self->impl();
}
BrowserContextImpl::BrowserContextImpl(BrowserContext* self) : self_(self) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
background_sync_scheduler_ = base::MakeRefCounted<BackgroundSyncScheduler>();
}
BrowserContextImpl::~BrowserContextImpl() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK(!storage_partition_map_)
<< "StoragePartitionMap is not shut down properly";
if (!will_be_destroyed_soon_) {
NOTREACHED_IN_MIGRATION();
}
// Verify that there are no outstanding RenderProcessHosts that reference
// this context. Trigger a crash report if there are still references so
// we can detect/diagnose potential UAFs.
std::string rph_crash_key_value;
ChildProcessSecurityPolicyImpl* policy =
ChildProcessSecurityPolicyImpl::GetInstance();
for (RenderProcessHost::iterator host_iterator =
RenderProcessHost::AllHostsIterator();
!host_iterator.IsAtEnd(); host_iterator.Advance()) {
RenderProcessHost* host = host_iterator.GetCurrentValue();
if (host->GetBrowserContext() == self_) {
rph_crash_key_value +=
"{ " + host->GetInfoForBrowserContextDestructionCrashReporting() +
" }";
}
}
if (!rph_crash_key_value.empty()) {
SCOPED_CRASH_KEY_STRING256("BrowserContext", "dangling_rph",
rph_crash_key_value);
DUMP_WILL_BE_NOTREACHED()
<< "rph_with_bc_reference : " << rph_crash_key_value;
}
// Clean up any isolated origins and other security state associated with this
// BrowserContext.
policy->RemoveStateForBrowserContext(*self_);
if (download_manager_)
download_manager_->Shutdown();
TtsControllerImpl::GetInstance()->OnBrowserContextDestroyed(self_);
if (BrowserThread::IsThreadInitialized(BrowserThread::IO)) {
GetIOThreadTaskRunner({})->DeleteSoon(FROM_HERE,
std::move(resource_context_));
}
TRACE_EVENT_NESTABLE_ASYNC_END1(
"shutdown", "BrowserContextImpl::NotifyWillBeDestroyed() called.", this,
"browser_context_impl", static_cast<void*>(this));
}
bool BrowserContextImpl::ShutdownStarted() {
return will_be_destroyed_soon_;
}
void BrowserContextImpl::NotifyWillBeDestroyed() {
TRACE_EVENT1("shutdown", "BrowserContextImpl::NotifyWillBeDestroyed",
"browser_context_impl", static_cast<void*>(this));
TRACE_EVENT_NESTABLE_ASYNC_BEGIN1(
"shutdown", "BrowserContextImpl::NotifyWillBeDestroyed() called.", this,
"browser_context_impl", static_cast<void*>(this));
// Make sure NotifyWillBeDestroyed is idempotent. This helps facilitate the
// pattern where NotifyWillBeDestroyed is called from *both*
// ShellBrowserContext and its derived classes (e.g. WebTestBrowserContext).
if (will_be_destroyed_soon_)
return;
will_be_destroyed_soon_ = true;
self_->ForEachLoadedStoragePartition(&NotifyContextWillBeDestroyed);
// Cancel navigations that are happening in the BrowserContext that's going
// away.
if (base::FeatureList::IsEnabled(
kCancelNavigationsDuringBrowserContextShutdown)) {
RenderFrameHostImpl::CancelAllNavigationsForBrowserContextShutdown(self_);
}
// Also forcibly release keep alive refcounts on RenderProcessHosts, to ensure
// they destruct before the BrowserContext does.
for (RenderProcessHost::iterator host_iterator =
RenderProcessHost::AllHostsIterator();
!host_iterator.IsAtEnd(); host_iterator.Advance()) {
RenderProcessHost* host = host_iterator.GetCurrentValue();
if (host->GetBrowserContext() == self_) {
// This will also clean up spare RPH references.
host->DisableRefCounts();
}
}
}
StoragePartitionImplMap* BrowserContextImpl::GetOrCreateStoragePartitionMap() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!storage_partition_map_)
storage_partition_map_ = std::make_unique<StoragePartitionImplMap>(self_);
return storage_partition_map_.get();
}
BrowsingDataRemoverImpl* BrowserContextImpl::GetBrowsingDataRemover() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!browsing_data_remover_) {
browsing_data_remover_ = std::make_unique<BrowsingDataRemoverImpl>(self_);
browsing_data_remover_->SetEmbedderDelegate(
self_->GetBrowsingDataRemoverDelegate());
}
return browsing_data_remover_.get();
}
media::learning::LearningSession* BrowserContextImpl::GetLearningSession() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!learning_session_) {
learning_session_ = std::make_unique<media::learning::LearningSessionImpl>(
base::SequencedTaskRunner::GetCurrentDefault());
// Using base::Unretained is safe below, because the callback here will not
// be called or retained after the Register method below returns.
media::learning::MediaLearningTasks::Register(base::BindRepeating(
&RegisterMediaLearningTask, base::Unretained(learning_session_.get())));
}
return learning_session_.get();
}
media::VideoDecodePerfHistory* BrowserContextImpl::GetVideoDecodePerfHistory() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!video_decode_perf_history_)
video_decode_perf_history_ = self_->CreateVideoDecodePerfHistory();
return video_decode_perf_history_.get();
}
std::unique_ptr<media::WebrtcVideoPerfHistory>
BrowserContextImpl::CreateWebrtcVideoPerfHistory() {
// TODO(crbug.com/40172952): Implement in memory path in
// off_the_record_profile_impl.cc and web_engine_browser_context.cc
DCHECK_CURRENTLY_ON(BrowserThread::UI);
auto* db_provider =
self_->GetDefaultStoragePartition()->GetProtoDatabaseProvider();
std::unique_ptr<media::WebrtcVideoStatsDB> stats_db =
media::WebrtcVideoStatsDBImpl::Create(
self_->GetPath().Append(FILE_PATH_LITERAL("WebrtcVideoStats")),
db_provider);
return std::make_unique<media::WebrtcVideoPerfHistory>(std::move(stats_db));
}
media::WebrtcVideoPerfHistory* BrowserContextImpl::GetWebrtcVideoPerfHistory() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!webrtc_video_perf_history_)
webrtc_video_perf_history_ = CreateWebrtcVideoPerfHistory();
return webrtc_video_perf_history_.get();
}
void BrowserContextImpl::ShutdownStoragePartitions() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// The BackgroundSyncScheduler keeps raw pointers to partitions; clear it
// first.
DCHECK(background_sync_scheduler_->HasOneRef());
background_sync_scheduler_.reset();
storage_partition_map_.reset();
}
DownloadManager* BrowserContextImpl::GetDownloadManager() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// Lazily populate `download_manager_`. This is important to
// 1) Avoid constructing DownloadManagerImpl when a test might have provided
// an alternative object via SetDownloadManagerForTesting.
// 2) Avoiding calling into DownloadManagerImpl's constructor with a partially
// constructed BrowserContext.
if (!download_manager_) {
download_manager_ = std::make_unique<DownloadManagerImpl>(self_);
// Note that GetDownloadManagerDelegate might call into GetDownloadManager,
// leading to re-entrancy concerns. We avoid re-entrancy by making sure
// `download_manager_` is set earlier, above.
download_manager_->SetDelegate(self_->GetDownloadManagerDelegate());
}
return download_manager_.get();
}
void BrowserContextImpl::SetDownloadManagerForTesting(
std::unique_ptr<DownloadManager> download_manager) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (download_manager_)
download_manager_->Shutdown();
download_manager_ = std::move(download_manager);
}
PermissionController* BrowserContextImpl::GetPermissionController() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!permission_controller_)
permission_controller_ = std::make_unique<PermissionControllerImpl>(self_);
return permission_controller_.get();
}
void BrowserContextImpl::SetPermissionControllerForTesting(
std::unique_ptr<PermissionController> permission_controller) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
permission_controller_ = std::move(permission_controller);
}
storage::ExternalMountPoints* BrowserContextImpl::GetMountPoints() {
// Ensure that these methods are called on the UI thread, except for
// unittests where a UI thread might not have been created.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI) ||
!BrowserThread::IsThreadInitialized(BrowserThread::UI));
#if BUILDFLAG(IS_CHROMEOS_ASH)
if (!external_mount_points_)
external_mount_points_ = storage::ExternalMountPoints::CreateRefCounted();
return external_mount_points_.get();
#else
return nullptr;
#endif
}
PrefetchService* BrowserContextImpl::GetPrefetchService() {
if (!prefetch_service_) {
prefetch_service_ = std::make_unique<PrefetchService>(self_);
}
return prefetch_service_.get();
}
InMemoryFederatedPermissionContext*
BrowserContextImpl::GetFederatedPermissionContext() {
if (!federated_permission_context_) {
federated_permission_context_ =
std::make_unique<InMemoryFederatedPermissionContext>();
}
return federated_permission_context_.get();
}
void BrowserContextImpl::ResetFederatedPermissionContext() {
federated_permission_context_.reset();
}
void BrowserContextImpl::SetPrefetchServiceForTesting(
std::unique_ptr<PrefetchService> prefetch_service) {
prefetch_service_ = std::move(prefetch_service);
}
NavigationEntryScreenshotManager*
BrowserContextImpl::GetNavigationEntryScreenshotManager() {
if (!nav_entry_screenshot_manager_ &&
NavigationTransitionConfig::AreBackForwardTransitionsEnabled()) {
nav_entry_screenshot_manager_ =
std::make_unique<NavigationEntryScreenshotManager>();
}
return nav_entry_screenshot_manager_.get();
}
void BrowserContextImpl::WriteIntoTrace(
perfetto::TracedProto<TraceProto> proto) const {
proto->set_id(UniqueId());
}
} // namespace content