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// 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 "chromecast/renderer/feature_manager.h"
#include <iostream>
#include <map>
#include <string>
#include <vector>
#include "base/check.h"
#include "base/containers/contains.h"
#include "base/logging.h"
#include "base/values.h"
#include "chromecast/base/cast_features.h"
#include "chromecast/common/feature_constants.h"
#include "chromecast/renderer/assistant_bindings.h"
#include "chromecast/renderer/cast_demo_bindings.h"
#include "chromecast/renderer/cast_window_manager_bindings.h"
#include "chromecast/renderer/settings_ui_bindings.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_frame_media_playback_options.h"
#include "services/network/public/cpp/is_potentially_trustworthy.h"
#include "third_party/blink/public/common/associated_interfaces/associated_interface_registry.h"
#include "third_party/blink/public/platform/web_runtime_features.h"
#include "third_party/blink/public/platform/web_security_origin.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_security_policy.h"
namespace chromecast {
FeatureManager::FeatureManager(content::RenderFrame* render_frame)
: content::RenderFrameObserver(render_frame),
configured_(false),
can_install_bindings_(false),
dev_origin_(GURL::EmptyGURL()),
secure_origin_set_(false) {
registry_.AddInterface(base::BindRepeating(
&FeatureManager::OnFeatureManagerRequest, base::Unretained(this)));
}
FeatureManager::~FeatureManager() {}
void FeatureManager::OnInterfaceRequestForFrame(
const std::string& interface_name,
mojo::ScopedMessagePipeHandle* interface_pipe) {
registry_.TryBindInterface(interface_name, interface_pipe);
}
void FeatureManager::OnDestruct() {
delete this;
}
void FeatureManager::DidClearWindowObject() {
can_install_bindings_ = true;
if (!configured_)
return;
EnableBindings();
}
void FeatureManager::ConfigureFeatures(
std::vector<chromecast::shell::mojom::FeaturePtr> features) {
if (configured_)
return;
configured_ = true;
for (auto& feature : features) {
// If we want to add enabled/disabled status to FeaturePtr, we can overlap
// previous setting via [] operator
features_map_[feature->name] = std::move(feature);
}
ConfigureFeaturesInternal();
if (!can_install_bindings_)
return;
EnableBindings();
}
void FeatureManager::ConfigureFeaturesInternal() {
if (FeatureEnabled(feature::kEnableDevMode)) {
const base::Value::Dict& dev_mode_config =
(features_map_.find(feature::kEnableDevMode)->second)->config;
const std::string* dev_mode_origin =
dev_mode_config.FindString(feature::kDevModeOrigin);
DCHECK(dev_mode_origin);
dev_origin_ = GURL(*dev_mode_origin);
DCHECK(dev_origin_.is_valid());
}
if (FeatureEnabled(feature::kDisableBackgroundSuspend)) {
auto options = render_frame()->GetRenderFrameMediaPlaybackOptions();
options.is_background_suspend_enabled = false;
render_frame()->SetRenderFrameMediaPlaybackOptions(options);
}
// Call feature-specific functions.
SetupAdditionalSecureOrigin();
// Disable timer throttling for background tabs before the frame is painted.
if (FeatureEnabled(feature::kDisableBackgroundTabTimerThrottle)) {
blink::WebRuntimeFeatures::EnableTimerThrottlingForBackgroundTabs(false);
}
if (FeatureEnabled(feature::kEnableSettingsUiMojo)) {
v8_bindings_.insert(new shell::SettingsUiBindings(render_frame()));
}
// Window manager bindings will install themselves depending on the specific
// feature flags enabled, so we pass the feature manager through to let it
// decide.
v8_bindings_.insert(
new shell::CastWindowManagerBindings(render_frame(), this));
if (FeatureEnabled(feature::kEnableDemoStandaloneMode)) {
v8_bindings_.insert(new shell::CastDemoBindings(render_frame()));
}
if (FeatureEnabled(feature::kEnableAssistantMessagePipe)) {
auto& feature = GetFeature(feature::kEnableAssistantMessagePipe);
v8_bindings_.insert(
new shell::AssistantBindings(render_frame(), feature->config));
}
}
void FeatureManager::EnableBindings() {
LOG(INFO) << "Enabling bindings: " << *this;
for (auto* binding : v8_bindings_) {
binding->TryInstall();
}
}
void FeatureManager::OnFeatureManagerRequest(
mojo::PendingReceiver<shell::mojom::FeatureManager> request) {
bindings_.Add(this, std::move(request));
}
bool FeatureManager::FeatureEnabled(const std::string& feature) const {
return base::Contains(features_map_, feature);
}
const chromecast::shell::mojom::FeaturePtr& FeatureManager::GetFeature(
const std::string& feature) const {
auto itor = features_map_.find(feature);
DCHECK(itor != features_map_.end());
return itor->second;
}
void FeatureManager::SetupAdditionalSecureOrigin() {
if (!dev_origin_.is_valid()) {
return;
}
// Secure origin should be only set once, otherwise it will cause CHECK
// failure when race between origin safelist changing and thread creation
// happens (b/63583734).
if (secure_origin_set_) {
return;
}
secure_origin_set_ = true;
LOG(INFO) << "Treat origin " << dev_origin_ << " as secure origin";
blink::WebSecurityPolicy::AddSchemeToSecureContextSafelist(
blink::WebString::FromASCII(dev_origin_.scheme()));
network::SecureOriginAllowlist::GetInstance().SetAuxiliaryAllowlist(
dev_origin_.spec(), nullptr);
}
std::ostream& operator<<(std::ostream& os, const FeatureManager& features) {
for (auto& feature : features.features_map_) {
os << feature.first << " ";
}
return os;
}
} // namespace chromecast
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