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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 "chrome/browser/extensions/install_verifier.h"
#include "base/values.h"
#include "chrome/browser/extensions/extension_management.h"
#include "chrome/browser/extensions/extension_service_test_base.h"
#include "chrome/browser/extensions/external_policy_loader.h"
#include "chrome/browser/policy/policy_test_utils.h"
#include "chrome/browser/profiles/profile.h"
#include "components/sync_preferences/testing_pref_service_syncable.h"
#include "extensions/browser/pref_names.h"
#include "extensions/buildflags/buildflags.h"
#include "extensions/common/extension.h"
#include "extensions/common/extension_builder.h"
#include "extensions/common/extension_urls.h"
#include "extensions/common/manifest.h"
#include "testing/gtest/include/gtest/gtest.h"
static_assert(BUILDFLAG(ENABLE_EXTENSIONS_CORE));
using extensions::mojom::ManifestLocation;
namespace extensions {
class InstallVerifierTest : public ExtensionServiceTestBase {
public:
InstallVerifierTest() = default;
InstallVerifierTest(const InstallVerifierTest&) = delete;
InstallVerifierTest& operator=(const InstallVerifierTest&) = delete;
~InstallVerifierTest() override = default;
void SetUp() override {
ExtensionServiceTestBase::SetUp();
InitializeExtensionService(ExtensionServiceInitParams());
}
// Adds an extension as being allowed by policy.
void AddExtensionAsPolicyInstalled(const ExtensionId& id) {
base::Value::Dict extension_entry =
base::Value::Dict().Set("installation_mode", "allowed");
testing_pref_service()->SetManagedPref(
pref_names::kExtensionManagement,
base::Value::Dict().Set(id, std::move(extension_entry)));
EXPECT_TRUE(ExtensionManagementFactory::GetForBrowserContext(profile())
->IsInstallationExplicitlyAllowed(id));
}
private:
ScopedInstallVerifierBypassForTest force_install_verification{
ScopedInstallVerifierBypassForTest::kForceOn};
std::unique_ptr<ExtensionManagement> extension_management_;
std::unique_ptr<TestingPrefServiceSimple> pref_service_;
};
// Test the behavior of the InstallVerifier for various extensions.
TEST_F(InstallVerifierTest, TestIsFromStoreAndMustRemainDisabled) {
enum FromStoreStatus {
FROM_STORE,
NOT_FROM_STORE,
};
enum MustRemainDisabledStatus {
MUST_REMAIN_DISABLED,
CAN_BE_ENABLED,
};
GURL store_update_url = extension_urls::GetWebstoreUpdateUrl();
GURL non_store_update_url("https://example.com");
struct {
const char* test_name;
ManifestLocation location;
std::optional<GURL> update_url;
FromStoreStatus expected_from_store_status;
MustRemainDisabledStatus expected_must_remain_disabled_status;
} test_cases[] = {
{"internal from store", ManifestLocation::kInternal, store_update_url,
FROM_STORE, CAN_BE_ENABLED},
{"internal non-store update url", ManifestLocation::kInternal,
non_store_update_url, NOT_FROM_STORE, MUST_REMAIN_DISABLED},
{"internal no update url", ManifestLocation::kInternal, std::nullopt,
NOT_FROM_STORE, MUST_REMAIN_DISABLED},
{"unpacked from store", ManifestLocation::kUnpacked, store_update_url,
FROM_STORE, CAN_BE_ENABLED},
{"unpacked non-store update url", ManifestLocation::kUnpacked,
non_store_update_url, NOT_FROM_STORE, CAN_BE_ENABLED},
{"unpacked no update url", ManifestLocation::kUnpacked, std::nullopt,
NOT_FROM_STORE, CAN_BE_ENABLED},
{"external from store", ManifestLocation::kExternalPolicyDownload,
store_update_url, FROM_STORE, CAN_BE_ENABLED},
{"external non-store update url",
ManifestLocation::kExternalPolicyDownload, non_store_update_url,
NOT_FROM_STORE, CAN_BE_ENABLED},
};
InstallVerifier* install_verifier = InstallVerifier::Get(profile());
for (const auto& test_case : test_cases) {
SCOPED_TRACE(test_case.test_name);
ExtensionBuilder extension_builder(test_case.test_name);
extension_builder.SetLocation(test_case.location);
if (test_case.update_url) {
extension_builder.SetManifestKey("update_url",
test_case.update_url->spec());
}
scoped_refptr<const Extension> extension = extension_builder.Build();
if (Manifest::IsPolicyLocation(test_case.location))
AddExtensionAsPolicyInstalled(extension->id());
EXPECT_EQ(test_case.expected_from_store_status == FROM_STORE,
InstallVerifier::IsFromStore(*extension, profile()));
disable_reason::DisableReason disable_reason;
EXPECT_EQ(
test_case.expected_must_remain_disabled_status == MUST_REMAIN_DISABLED,
install_verifier->MustRemainDisabled(extension.get(), &disable_reason));
}
}
#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
// Test the behavior of the InstallVerifier when an extension is
// force-installed in different trust environments.
TEST_F(InstallVerifierTest, ForceInstalledExtensionBehaviorWithTrustLevels) {
InstallVerifier* install_verifier = InstallVerifier::Get(profile());
scoped_refptr<const Extension> forced_extension =
ExtensionBuilder("Force Installed Extension")
.SetLocation(ManifestLocation::kExternalPolicyDownload)
.Build();
base::Value::Dict forced_list_pref;
ExternalPolicyLoader::AddExtension(forced_list_pref, forced_extension->id(),
"http://example.com/update_url");
testing_pref_service()->SetManagedPref(pref_names::kInstallForceList,
forced_list_pref.Clone());
{
// Set up a low-trust environment.
policy::ScopedManagementServiceOverrideForTesting browser_management(
policy::ManagementServiceFactory::GetForPlatform(),
policy::EnterpriseManagementAuthority::NONE);
EXPECT_TRUE(ExtensionManagementFactory::GetForBrowserContext(profile())
->IsForceInstalledInLowTrustEnvironment(*forced_extension));
// In a low-trust environment, the extension should remain disabled.
disable_reason::DisableReason disable_reason = disable_reason::DISABLE_NONE;
EXPECT_TRUE(install_verifier->MustRemainDisabled(forced_extension.get(),
&disable_reason));
EXPECT_EQ(disable_reason::DISABLE_NOT_VERIFIED, disable_reason);
}
{
// Set up a high-trust environment.
policy::ScopedManagementServiceOverrideForTesting browser_management(
policy::ManagementServiceFactory::GetForPlatform(),
policy::EnterpriseManagementAuthority::CLOUD_DOMAIN);
EXPECT_FALSE(
ExtensionManagementFactory::GetForBrowserContext(profile())
->IsForceInstalledInLowTrustEnvironment(*forced_extension));
// In a high-trust environment, the extension should not remain disabled.
disable_reason::DisableReason disable_reason = disable_reason::DISABLE_NONE;
EXPECT_FALSE(install_verifier->MustRemainDisabled(forced_extension.get(),
&disable_reason));
// Verify that disable_reason is still DISABLE_NONE.
EXPECT_EQ(disable_reason::DISABLE_NONE, disable_reason);
}
}
#endif
} // namespace extensions
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