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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/renderer_startup_helper.h"
#include "base/containers/contains.h"
#include "base/memory/raw_ptr.h"
#include "components/crx_file/id_util.h"
#include "content/public/test/mock_render_process_host.h"
#include "content/public/test/test_browser_context.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_registry_factory.h"
#include "extensions/browser/extension_util.h"
#include "extensions/browser/extensions_test.h"
#include "extensions/browser/test_extensions_browser_client.h"
#include "extensions/common/extension_builder.h"
#include "extensions/common/extension_id.h"
#include "extensions/common/mojom/host_id.mojom.h"
#include "extensions/common/mojom/renderer.mojom.h"
#include "extensions/common/permissions/permissions_data.h"
#include "mojo/public/cpp/bindings/associated_receiver_set.h"
#if BUILDFLAG(IS_CHROMEOS)
#include "chromeos/constants/chromeos_features.h"
#include "chromeos/constants/pref_names.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/testing_pref_service.h"
#endif
namespace extensions {
// Class that implements the binding of a new Renderer mojom interface and
// can receive callbacks on it for testing validation.
class RendererStartupHelperInterceptor : public RendererStartupHelper,
public mojom::Renderer {
public:
explicit RendererStartupHelperInterceptor(
content::BrowserContext* browser_context)
: RendererStartupHelper(browser_context),
browser_context_(browser_context) {}
size_t num_activated_extensions() { return activated_extensions_.size(); }
size_t num_loaded_extensions() { return num_loaded_extensions_; }
size_t num_loaded_extensions_in_incognito() {
return num_loaded_extensions_in_incognito_;
}
size_t num_unloaded_extensions() { return unloaded_extensions_.size(); }
void clear_extensions() {
activated_extensions_.clear();
num_loaded_extensions_ = 0;
num_loaded_extensions_in_incognito_ = 0;
unloaded_extensions_.clear();
}
const URLPatternSet& default_policy_blocked_hosts() const {
return default_blocked_hosts_;
}
const URLPatternSet& default_policy_allowed_hosts() const {
return default_allowed_hosts_;
}
protected:
mojo::PendingAssociatedRemote<mojom::Renderer> BindNewRendererRemote(
content::RenderProcessHost* process) override {
mojo::AssociatedRemote<mojom::Renderer> remote;
receivers_.Add(this, remote.BindNewEndpointAndPassDedicatedReceiver());
return remote.Unbind();
}
private:
// mojom::Renderer implementation:
void ActivateExtension(const ExtensionId& extension_id) override {
activated_extensions_.push_back(extension_id);
}
void SetActivityLoggingEnabled(bool enabled) override {}
void LoadExtensions(
std::vector<mojom::ExtensionLoadedParamsPtr> loaded_extensions) override {
for (const auto& param : loaded_extensions) {
const std::set<raw_ptr<content::RenderProcessHost, SetExperimental>>&
process_set = extension_process_map_[param->id];
for (content::RenderProcessHost* process : process_set) {
// Count the invocation of the LoadExtensions method on the normal
// renderer or the incognito renderer.
if (process->GetBrowserContext() == browser_context_) {
num_loaded_extensions_++;
} else {
// If RenderProcessHost's context isn't the same as |browser_context_|
// , assume that the RenderProcessHost is the incognito renderer.
num_loaded_extensions_in_incognito_++;
}
}
}
}
void UnloadExtension(const ExtensionId& extension_id) override {
unloaded_extensions_.push_back(extension_id);
}
void SuspendExtension(
const ExtensionId& extension_id,
mojom::Renderer::SuspendExtensionCallback callback) override {
std::move(callback).Run();
}
void CancelSuspendExtension(const ExtensionId& extension_id) override {}
void SetDeveloperMode(bool current_developer_mode) override {}
void SetUserScriptsAllowed(const std::string& extension_id,
bool allowed) override {}
void SetSessionInfo(version_info::Channel channel,
mojom::FeatureSessionType session) override {}
void SetSystemFont(const std::string& font_family,
const std::string& font_size) override {}
void SetWebViewPartitionID(const std::string& partition_id) override {}
void SetScriptingAllowlist(
const std::vector<ExtensionId>& extension_ids) override {}
void UpdateUserScriptWorlds(
std::vector<mojom::UserScriptWorldInfoPtr> info) override {}
void ClearUserScriptWorldConfig(
const ExtensionId& extension_id,
const std::optional<std::string>& world_id) override {}
void ShouldSuspend(ShouldSuspendCallback callback) override {
std::move(callback).Run();
}
void TransferBlobs(TransferBlobsCallback callback) override {
std::move(callback).Run();
}
void UpdatePermissions(const ExtensionId& extension_id,
PermissionSet active_permissions,
PermissionSet withheld_permissions,
URLPatternSet policy_blocked_hosts,
URLPatternSet policy_allowed_hosts,
bool uses_default_policy_host_restrictions) override {}
void UpdateDefaultPolicyHostRestrictions(
URLPatternSet default_policy_blocked_hosts,
URLPatternSet default_policy_allowed_hosts) override {
default_blocked_hosts_.AddPatterns(default_policy_blocked_hosts);
default_allowed_hosts_.AddPatterns(default_policy_allowed_hosts);
}
void UpdateUserHostRestrictions(URLPatternSet user_blocked_hosts,
URLPatternSet user_allowed_hosts) override {}
void UpdateTabSpecificPermissions(const ExtensionId& extension_id,
URLPatternSet new_hosts,
int tab_id,
bool update_origin_allowlist) override {}
void UpdateUserScripts(base::ReadOnlySharedMemoryRegion shared_memory,
mojom::HostIDPtr host_id) override {}
void ClearTabSpecificPermissions(
const std::vector<ExtensionId>& extension_ids,
int tab_id,
bool update_origin_allowlist) override {}
void WatchPages(const std::vector<std::string>& css_selectors) override {}
URLPatternSet default_blocked_hosts_;
URLPatternSet default_allowed_hosts_;
std::vector<ExtensionId> activated_extensions_;
size_t num_loaded_extensions_;
size_t num_loaded_extensions_in_incognito_;
std::vector<ExtensionId> unloaded_extensions_;
raw_ptr<content::BrowserContext> browser_context_;
mojo::AssociatedReceiverSet<mojom::Renderer> receivers_;
};
class RendererStartupHelperTest : public ExtensionsTest {
public:
RendererStartupHelperTest() {}
RendererStartupHelperTest(const RendererStartupHelperTest&) = delete;
RendererStartupHelperTest& operator=(const RendererStartupHelperTest&) =
delete;
~RendererStartupHelperTest() override {}
void SetUp() override {
ExtensionsTest::SetUp();
helper_ =
std::make_unique<RendererStartupHelperInterceptor>(browser_context());
registry_ =
ExtensionRegistryFactory::GetForBrowserContext(browser_context());
render_process_host_ =
std::make_unique<content::MockRenderProcessHost>(browser_context());
incognito_render_process_host_ =
std::make_unique<content::MockRenderProcessHost>(incognito_context());
extension_ = CreateExtension("ext_1");
}
void TearDown() override {
render_process_host_.reset();
incognito_render_process_host_.reset();
helper_.reset();
ExtensionsTest::TearDown();
}
protected:
void SimulateRenderProcessCreated(content::RenderProcessHost* rph) {
helper_->OnRenderProcessHostCreated(rph);
}
void SimulateRenderProcessTerminated(content::RenderProcessHost* rph) {
helper_->RenderProcessHostDestroyed(rph);
}
scoped_refptr<const Extension> CreateExtension(const ExtensionId& id_input) {
base::Value::Dict manifest = base::Value::Dict()
.Set("name", "extension")
.Set("description", "an extension")
.Set("manifest_version", 2)
.Set("version", "0.1");
return CreateExtension(id_input, std::move(manifest));
}
scoped_refptr<const Extension> CreateTheme(const ExtensionId& id_input) {
base::Value::Dict manifest = base::Value::Dict()
.Set("name", "theme")
.Set("description", "a theme")
.Set("theme", base::Value::Dict())
.Set("manifest_version", 2)
.Set("version", "0.1");
return CreateExtension(id_input, std::move(manifest));
}
scoped_refptr<const Extension> CreatePlatformApp(
const ExtensionId& id_input) {
base::Value::Dict background = base::Value::Dict().Set(
"scripts", base::Value::List().Append("background.js"));
base::Value::Dict manifest =
base::Value::Dict()
.Set("name", "platform_app")
.Set("description", "a platform app")
.Set("app",
base::Value::Dict().Set("background", std::move(background)))
.Set("manifest_version", 2)
.Set("version", "0.1");
return CreateExtension(id_input, std::move(manifest));
}
void AddExtensionToRegistry(scoped_refptr<const Extension> extension) {
registry_->AddEnabled(extension);
}
void RemoveExtensionFromRegistry(scoped_refptr<const Extension> extension) {
registry_->RemoveEnabled(extension->id());
}
bool IsProcessInitialized(content::RenderProcessHost* rph) {
return base::Contains(helper_->process_mojo_map_, rph);
}
bool IsExtensionLoaded(const Extension& extension) {
return base::Contains(helper_->extension_process_map_, extension.id());
}
bool IsExtensionLoadedInProcess(const Extension& extension,
content::RenderProcessHost* rph) {
return IsExtensionLoaded(extension) &&
base::Contains(helper_->extension_process_map_[extension.id()], rph);
}
bool IsExtensionPendingActivationInProcess(const Extension& extension,
content::RenderProcessHost* rph) {
return base::Contains(helper_->pending_active_extensions_, rph) &&
base::Contains(helper_->pending_active_extensions_[rph],
extension.id());
}
std::unique_ptr<RendererStartupHelperInterceptor> helper_;
raw_ptr<ExtensionRegistry, DanglingUntriaged> registry_; // Weak.
std::unique_ptr<content::MockRenderProcessHost> render_process_host_;
std::unique_ptr<content::MockRenderProcessHost>
incognito_render_process_host_;
scoped_refptr<const Extension> extension_;
private:
scoped_refptr<const Extension> CreateExtension(const ExtensionId& id_input,
base::Value::Dict manifest) {
return ExtensionBuilder()
.SetManifest(std::move(manifest))
.SetID(crx_file::id_util::GenerateId(id_input))
.Build();
}
};
// Tests extension loading, unloading and activation and render process creation
// and termination.
TEST_F(RendererStartupHelperTest, NormalExtensionLifecycle) {
// Initialize render process.
EXPECT_FALSE(IsProcessInitialized(render_process_host_.get()));
SimulateRenderProcessCreated(render_process_host_.get());
base::RunLoop().RunUntilIdle();
EXPECT_TRUE(IsProcessInitialized(render_process_host_.get()));
// Enable extension.
helper_->clear_extensions();
EXPECT_FALSE(IsExtensionLoaded(*extension_));
AddExtensionToRegistry(extension_);
helper_->OnExtensionLoaded(*extension_);
EXPECT_TRUE(
IsExtensionLoadedInProcess(*extension_, render_process_host_.get()));
EXPECT_FALSE(IsExtensionPendingActivationInProcess(
*extension_, render_process_host_.get()));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, helper_->num_loaded_extensions());
// Activate extension.
helper_->ActivateExtensionInProcess(*extension_, render_process_host_.get());
EXPECT_FALSE(IsExtensionPendingActivationInProcess(
*extension_, render_process_host_.get()));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, helper_->num_activated_extensions());
// Disable extension.
helper_->clear_extensions();
RemoveExtensionFromRegistry(extension_);
helper_->OnExtensionUnloaded(*extension_);
EXPECT_FALSE(IsExtensionLoaded(*extension_));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, helper_->num_unloaded_extensions());
// Extension enabled again.
helper_->clear_extensions();
AddExtensionToRegistry(extension_);
helper_->OnExtensionLoaded(*extension_);
EXPECT_TRUE(
IsExtensionLoadedInProcess(*extension_, render_process_host_.get()));
EXPECT_FALSE(IsExtensionPendingActivationInProcess(
*extension_, render_process_host_.get()));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, helper_->num_loaded_extensions());
// Render Process terminated.
SimulateRenderProcessTerminated(render_process_host_.get());
EXPECT_FALSE(IsProcessInitialized(render_process_host_.get()));
EXPECT_TRUE(IsExtensionLoaded(*extension_));
EXPECT_FALSE(
IsExtensionLoadedInProcess(*extension_, render_process_host_.get()));
EXPECT_FALSE(IsExtensionPendingActivationInProcess(
*extension_, render_process_host_.get()));
}
// Tests that activating an extension in an uninitialized render process works
// fine.
TEST_F(RendererStartupHelperTest, EnabledBeforeProcessInitialized) {
EXPECT_FALSE(IsProcessInitialized(render_process_host_.get()));
// Enable extension. The render process isn't initialized yet, so the
// extension should be added to the list of extensions awaiting activation.
helper_->clear_extensions();
AddExtensionToRegistry(extension_);
helper_->OnExtensionLoaded(*extension_);
helper_->ActivateExtensionInProcess(*extension_, render_process_host_.get());
ASSERT_EQ(0u, helper_->num_loaded_extensions());
EXPECT_TRUE(IsExtensionLoaded(*extension_));
EXPECT_FALSE(
IsExtensionLoadedInProcess(*extension_, render_process_host_.get()));
EXPECT_TRUE(IsExtensionPendingActivationInProcess(
*extension_, render_process_host_.get()));
// Initialize PermissionsData default policy hosts restrictions.
// During the process initialization, UpdateDefaultPolicyHostRestrictions
// will be called with the default policy values returned by PermissionsData.
URLPatternSet default_blocked_hosts;
URLPatternSet default_allowed_hosts;
default_blocked_hosts.AddPattern(
URLPattern(URLPattern::SCHEME_ALL, "*://*.example.com/*"));
default_allowed_hosts.AddPattern(
URLPattern(URLPattern::SCHEME_ALL, "*://test.example2.com/*"));
PermissionsData::SetDefaultPolicyHostRestrictions(
util::GetBrowserContextId(browser_context()), default_blocked_hosts,
default_allowed_hosts);
// Initialize the render process.
SimulateRenderProcessCreated(render_process_host_.get());
// The renderer would have been sent multiple initialization messages
// including the loading and activation messages for the extension.
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, helper_->num_loaded_extensions());
// Method UpdateDefaultPolicyHostRestrictions() from mojom::Renderer should
// have been called with the default policy for blocked/allowed hosts given by
// PermissionsData, which was initialized above.
base::RunLoop().RunUntilIdle();
EXPECT_EQ(default_blocked_hosts, helper_->default_policy_blocked_hosts());
EXPECT_EQ(default_allowed_hosts, helper_->default_policy_allowed_hosts());
EXPECT_TRUE(IsProcessInitialized(render_process_host_.get()));
EXPECT_TRUE(
IsExtensionLoadedInProcess(*extension_, render_process_host_.get()));
EXPECT_FALSE(IsExtensionPendingActivationInProcess(
*extension_, render_process_host_.get()));
}
// Tests that themes aren't loaded in a renderer process.
TEST_F(RendererStartupHelperTest, LoadTheme) {
// Initialize render process.
EXPECT_FALSE(IsProcessInitialized(render_process_host_.get()));
SimulateRenderProcessCreated(render_process_host_.get());
EXPECT_TRUE(IsProcessInitialized(render_process_host_.get()));
scoped_refptr<const Extension> extension(CreateTheme("theme"));
ASSERT_TRUE(extension->is_theme());
IPC::TestSink& sink = render_process_host_->sink();
// Enable the theme. Verify it isn't loaded and activated in the renderer.
sink.ClearMessages();
EXPECT_FALSE(IsExtensionLoaded(*extension));
AddExtensionToRegistry(extension_);
helper_->OnExtensionLoaded(*extension);
EXPECT_EQ(0u, sink.message_count());
EXPECT_TRUE(IsExtensionLoaded(*extension));
EXPECT_FALSE(
IsExtensionLoadedInProcess(*extension, render_process_host_.get()));
helper_->ActivateExtensionInProcess(*extension, render_process_host_.get());
EXPECT_EQ(0u, sink.message_count());
EXPECT_FALSE(IsExtensionPendingActivationInProcess(
*extension, render_process_host_.get()));
helper_->OnExtensionUnloaded(*extension);
EXPECT_EQ(0u, sink.message_count());
EXPECT_FALSE(IsExtensionLoaded(*extension));
}
// Tests that only incognito-enabled extensions are loaded in an incognito
// context.
TEST_F(RendererStartupHelperTest, ExtensionInIncognitoRenderer) {
// Initialize the incognito renderer.
EXPECT_FALSE(IsProcessInitialized(incognito_render_process_host_.get()));
SimulateRenderProcessCreated(incognito_render_process_host_.get());
EXPECT_TRUE(IsProcessInitialized(incognito_render_process_host_.get()));
// Enable the extension. It should not be loaded in the initialized incognito
// renderer.
helper_->clear_extensions();
EXPECT_FALSE(util::IsIncognitoEnabled(extension_->id(), browser_context()));
EXPECT_FALSE(IsExtensionLoaded(*extension_));
AddExtensionToRegistry(extension_);
helper_->OnExtensionLoaded(*extension_);
EXPECT_EQ(0u, helper_->num_loaded_extensions());
EXPECT_EQ(0u, helper_->num_loaded_extensions_in_incognito());
EXPECT_TRUE(IsExtensionLoaded(*extension_));
EXPECT_FALSE(IsExtensionLoadedInProcess(
*extension_, incognito_render_process_host_.get()));
EXPECT_FALSE(
IsExtensionLoadedInProcess(*extension_, render_process_host_.get()));
// Initialize the normal renderer. The extension should get loaded in it.
helper_->clear_extensions();
EXPECT_FALSE(IsProcessInitialized(render_process_host_.get()));
SimulateRenderProcessCreated(render_process_host_.get());
EXPECT_TRUE(IsProcessInitialized(render_process_host_.get()));
EXPECT_TRUE(
IsExtensionLoadedInProcess(*extension_, render_process_host_.get()));
EXPECT_FALSE(IsExtensionLoadedInProcess(
*extension_, incognito_render_process_host_.get()));
// Multiple initialization messages including the extension load message
// should be dispatched to the non-incognito renderer.
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, helper_->num_loaded_extensions());
ASSERT_EQ(0u, helper_->num_loaded_extensions_in_incognito());
// Enable the extension in incognito mode. This will reload the extension.
helper_->clear_extensions();
ExtensionPrefs::Get(browser_context())
->SetIsIncognitoEnabled(extension_->id(), true);
helper_->OnExtensionUnloaded(*extension_);
helper_->OnExtensionLoaded(*extension_);
EXPECT_TRUE(IsExtensionLoadedInProcess(*extension_,
incognito_render_process_host_.get()));
EXPECT_TRUE(
IsExtensionLoadedInProcess(*extension_, render_process_host_.get()));
// The extension would not have been unloaded from the incognito renderer
// since it wasn't loaded.
base::RunLoop().RunUntilIdle();
// LoadExtensions are called twice because it's also called by
// RendererStartupHelper::InitializeProcess as soon as a RenderProcessHost
// instance is created.
ASSERT_EQ(2u, helper_->num_loaded_extensions_in_incognito());
// The extension would be first unloaded and then loaded from the normal
// renderer.
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, helper_->num_unloaded_extensions());
ASSERT_EQ(2u, helper_->num_loaded_extensions());
}
// Tests that platform apps are always loaded in an incognito renderer.
TEST_F(RendererStartupHelperTest, PlatformAppInIncognitoRenderer) {
// Initialize the incognito renderer.
EXPECT_FALSE(IsProcessInitialized(incognito_render_process_host_.get()));
SimulateRenderProcessCreated(incognito_render_process_host_.get());
base::RunLoop().RunUntilIdle();
EXPECT_TRUE(IsProcessInitialized(incognito_render_process_host_.get()));
scoped_refptr<const Extension> platform_app(
CreatePlatformApp("platform_app"));
ASSERT_TRUE(platform_app->is_platform_app());
EXPECT_FALSE(util::IsIncognitoEnabled(platform_app->id(), browser_context()));
EXPECT_FALSE(util::CanBeIncognitoEnabled(platform_app.get()));
// Enable the app. It should get loaded in the incognito renderer even though
// IsIncognitoEnabled returns false for it, since it can't be enabled for
// incognito.
helper_->clear_extensions();
AddExtensionToRegistry(platform_app);
helper_->OnExtensionLoaded(*platform_app);
EXPECT_TRUE(IsExtensionLoadedInProcess(*platform_app,
incognito_render_process_host_.get()));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, helper_->num_loaded_extensions_in_incognito());
}
#if BUILDFLAG(IS_CHROMEOS)
class RendererStartupHelperTestCaptivePortalPopupWindow
: public RendererStartupHelperTest {
public:
RendererStartupHelperTestCaptivePortalPopupWindow() = default;
~RendererStartupHelperTestCaptivePortalPopupWindow() override = default;
void SetUp() override {
RendererStartupHelperTest::SetUp();
static_cast<TestingPrefServiceSimple*>(pref_service())
->registry()
->RegisterBooleanPref(chromeos::prefs::kCaptivePortalSignin, false);
}
};
// Tests that only incognito-enabled extensions are loaded in an incognito
// context.
TEST_F(RendererStartupHelperTestCaptivePortalPopupWindow,
ExtensionInCaptivePortalSigninRenderer) {
// Set prefs::kCaptivePortalSignin to true in the shared PerfService instance.
ASSERT_TRUE(pref_service());
pref_service()->SetBoolean(chromeos::prefs::kCaptivePortalSignin, true);
extensions_browser_client()->set_pref_service_for_context(incognito_context(),
pref_service());
// Initialize the incognito renderer.
EXPECT_FALSE(IsProcessInitialized(incognito_render_process_host_.get()));
SimulateRenderProcessCreated(incognito_render_process_host_.get());
EXPECT_TRUE(IsProcessInitialized(incognito_render_process_host_.get()));
// Enable the extension. With the pref set it *should* be loaded in the
// initialized incognito renderer.
helper_->clear_extensions();
AddExtensionToRegistry(extension_);
helper_->OnExtensionLoaded(*extension_);
EXPECT_TRUE(util::IsIncognitoEnabled(extension_->id(), incognito_context()));
EXPECT_TRUE(IsExtensionLoaded(*extension_));
}
#endif
} // namespace extensions
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