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// Copyright 2015 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/safe_browsing/incident_reporting/extension_data_collection.h"
#include "base/containers/contains.h"
#include "base/json/json_string_value_serializer.h"
#include "base/time/time.h"
#include "base/version.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/extensions/chrome_content_browser_client_extensions_part.h"
#include "chrome/browser/extensions/extension_util.h"
#include "chrome/browser/extensions/install_signer.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/safe_browsing/incident_reporting/incident_reporting_service.h"
#include "components/safe_browsing/core/common/proto/csd.pb.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_prefs_factory.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_registry_factory.h"
#include "extensions/browser/install_prefs_helper.h"
#include "extensions/buildflags/buildflags.h"
#include "extensions/common/extension_set.h"
#include "extensions/common/manifest_constants.h"
namespace safe_browsing {
namespace {
// Helper function to extract information from extension and extension_prefs
// into extension_info.
void PopulateExtensionInfo(
const extensions::Extension& extension,
const extensions::ExtensionPrefs& extension_prefs,
const extensions::ExtensionRegistry& extension_registry,
ClientIncidentReport_ExtensionData_ExtensionInfo* extension_info) {
std::string extension_id = extension.id();
extension_info->set_id(extension_id);
extension_info->set_version(extension.version().GetString());
extension_info->set_name(extension.name());
extension_info->set_description(extension.description());
typedef ClientIncidentReport_ExtensionData_ExtensionInfo Info;
if (extension_registry.enabled_extensions().Contains(extension_id))
extension_info->set_state(Info::STATE_ENABLED);
else if (extension_registry.disabled_extensions().Contains(extension_id))
extension_info->set_state(Info::STATE_DISABLED);
else if (extension_registry.blocklisted_extensions().Contains(extension_id))
extension_info->set_state(Info::STATE_BLOCKLISTED);
else if (extension_registry.blocked_extensions().Contains(extension_id))
extension_info->set_state(Info::STATE_BLOCKED);
else if (extension_registry.terminated_extensions().Contains(extension_id))
extension_info->set_state(Info::STATE_TERMINATED);
extension_info->set_type(extension.GetType());
if (const std::string* update_url = extension.manifest()->FindStringPath(
extensions::manifest_keys::kUpdateURL)) {
extension_info->set_update_url(*update_url);
}
extension_info->set_installed_by_default(
extension.was_installed_by_default());
extension_info->set_installed_by_oem(extension.was_installed_by_oem());
// TODO(crbug.com/40124309): Remove this setter.
extension_info->set_from_bookmark(false);
extension_info->set_from_webstore(extension.from_webstore());
extension_info->set_converted_from_user_script(
extension.converted_from_user_script());
extension_info->set_may_be_untrusted(extension.may_be_untrusted());
extension_info->set_install_time_msec(
GetLastUpdateTime(&extension_prefs, extension.id())
.InMillisecondsSinceUnixEpoch());
std::unique_ptr<extensions::InstallSignature> signature_from_prefs =
extensions::InstallSignature::FromDict(
extension_prefs.GetInstallSignature());
if (signature_from_prefs) {
if (base::Contains(signature_from_prefs->ids, extension_id)) {
extension_info->set_has_signature_validation(true);
extension_info->set_signature_is_valid(true);
} else if (base::Contains(signature_from_prefs->invalid_ids,
extension_id)) {
extension_info->set_has_signature_validation(true);
extension_info->set_signature_is_valid(false);
}
}
std::string manifest_json;
JSONStringValueSerializer serializer(&manifest_json);
if (serializer.Serialize(*extension.manifest()->value()))
extension_info->mutable_manifest()->swap(manifest_json);
extension_info->set_manifest_location_type(
static_cast<int>(extension.manifest()->location()));
}
} // namespace
// Finds the last installed extension and adds relevant information to data's
// last_installed_extension field.
void CollectExtensionData(ClientIncidentReport_ExtensionData* data) {
#if BUILDFLAG(ENABLE_EXTENSIONS)
scoped_refptr<const extensions::Extension> last_installed_extension;
Profile* profile_for_last_installed_extension = nullptr;
base::Time last_install_time;
for (Profile* profile :
g_browser_process->profile_manager()->GetLoadedProfiles()) {
// Skip profiles for which the incident reporting service is not enabled.
//
// Some profiles cannot have extensions, such as the System Profile.
if (!IncidentReportingService::IsEnabledForProfile(profile) ||
extensions::ChromeContentBrowserClientExtensionsPart::
AreExtensionsDisabledForProfile(profile)) {
continue;
}
const extensions::ExtensionSet extensions =
extensions::ExtensionRegistryFactory::GetForBrowserContext(profile)
->GenerateInstalledExtensionsSet();
extensions::ExtensionPrefs* extension_prefs =
extensions::ExtensionPrefsFactory::GetForBrowserContext(profile);
for (const auto& extension : extensions) {
base::Time install_time =
GetLastUpdateTime(extension_prefs, extension->id());
if (install_time > last_install_time) {
last_install_time = install_time;
last_installed_extension = extension;
profile_for_last_installed_extension = profile;
}
}
}
if (last_installed_extension && profile_for_last_installed_extension) {
PopulateExtensionInfo(
*last_installed_extension,
*extensions::ExtensionPrefs::Get(profile_for_last_installed_extension),
*extensions::ExtensionRegistryFactory::GetForBrowserContext(
profile_for_last_installed_extension),
data->mutable_last_installed_extension());
}
#endif
}
} // namespace safe_browsing
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