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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/component_updater/installer_policies/safety_tips_component_installer.h"
#include <memory>
#include <utility>
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/task/thread_pool.h"
#include "base/values.h"
#include "components/lookalikes/core/safety_tips.pb.h"
#include "components/lookalikes/core/safety_tips_config.h"
using component_updater::ComponentUpdateService;
namespace {
const base::FilePath::CharType kSafetyTipsConfigBinaryPbFileName[] =
FILE_PATH_LITERAL("safety_tips.pb");
// The SHA256 of the SubjectPublicKeyInfo used to sign the extension.
// The extension id is: jflookgnkcckhobaglndicnbbgbonegd
const uint8_t kSafetyTipsPublicKeySHA256[32] = {
0x95, 0xbe, 0xea, 0x6d, 0xa2, 0x2a, 0x7e, 0x10, 0x6b, 0xd3, 0x82,
0xd1, 0x16, 0x1e, 0xd4, 0x63, 0x21, 0xfe, 0x79, 0x5d, 0x02, 0x30,
0xc2, 0xcf, 0x4a, 0x9c, 0x8a, 0x39, 0xcc, 0x4a, 0x00, 0xce};
std::unique_ptr<reputation::SafetyTipsConfig> LoadSafetyTipsProtoFromDisk(
const base::FilePath& pb_path) {
std::string binary_pb;
if (!base::ReadFileToString(pb_path, &binary_pb)) {
// The file won't exist on new installations, so this is not always an
// error.
DVLOG(1) << "Failed reading from " << pb_path.value();
return nullptr;
}
auto proto = std::make_unique<reputation::SafetyTipsConfig>();
if (!proto->ParseFromString(binary_pb)) {
DVLOG(1) << "Failed parsing proto " << pb_path.value();
return nullptr;
}
return proto;
}
} // namespace
namespace component_updater {
SafetyTipsComponentInstallerPolicy::SafetyTipsComponentInstallerPolicy() =
default;
SafetyTipsComponentInstallerPolicy::~SafetyTipsComponentInstallerPolicy() =
default;
bool SafetyTipsComponentInstallerPolicy::
SupportsGroupPolicyEnabledComponentUpdates() const {
return true;
}
bool SafetyTipsComponentInstallerPolicy::RequiresNetworkEncryption() const {
return false;
}
update_client::CrxInstaller::Result
SafetyTipsComponentInstallerPolicy::OnCustomInstall(
const base::Value::Dict& /* manifest */,
const base::FilePath& /* install_dir */) {
return update_client::CrxInstaller::Result(0); // Nothing custom here.
}
void SafetyTipsComponentInstallerPolicy::OnCustomUninstall() {}
base::FilePath SafetyTipsComponentInstallerPolicy::GetInstalledPath(
const base::FilePath& base) {
return base.Append(kSafetyTipsConfigBinaryPbFileName);
}
void SafetyTipsComponentInstallerPolicy::ComponentReady(
const base::Version& version,
const base::FilePath& install_dir,
base::Value::Dict /* manifest */) {
DVLOG(1) << "Component ready, version " << version.GetString() << " in "
<< install_dir.value();
const base::FilePath pb_path = GetInstalledPath(install_dir);
if (pb_path.empty()) {
return;
}
// The default proto will always be a placeholder since the updated versions
// are not checked in to the repo. Simply load whatever the component updater
// gave us without checking the default proto from the resource bundle.
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock(), base::TaskPriority::BEST_EFFORT},
base::BindOnce(&LoadSafetyTipsProtoFromDisk, pb_path),
base::BindOnce(&lookalikes::SetSafetyTipsRemoteConfigProto));
}
// Called during startup and installation before ComponentReady().
bool SafetyTipsComponentInstallerPolicy::VerifyInstallation(
const base::Value::Dict& /* manifest */,
const base::FilePath& install_dir) const {
// No need to actually validate the proto here, since we'll do the checking
// in PopulateFromDynamicUpdate().
return base::PathExists(GetInstalledPath(install_dir));
}
base::FilePath SafetyTipsComponentInstallerPolicy::GetRelativeInstallDir()
const {
return base::FilePath(FILE_PATH_LITERAL("SafetyTips"));
}
void SafetyTipsComponentInstallerPolicy::GetHash(
std::vector<uint8_t>* hash) const {
hash->assign(std::begin(kSafetyTipsPublicKeySHA256),
std::end(kSafetyTipsPublicKeySHA256));
}
std::string SafetyTipsComponentInstallerPolicy::GetName() const {
return "Safety Tips";
}
update_client::InstallerAttributes
SafetyTipsComponentInstallerPolicy::GetInstallerAttributes() const {
return update_client::InstallerAttributes();
}
void RegisterSafetyTipsComponent(ComponentUpdateService* cus) {
DVLOG(1) << "Registering Safety Tips component.";
auto installer = base::MakeRefCounted<ComponentInstaller>(
std::make_unique<SafetyTipsComponentInstallerPolicy>());
installer->Register(cus, base::OnceClosure());
}
} // namespace component_updater
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