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// Copyright 2020 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/component_updater/hyphenation_component_installer.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "base/no_destructor.h"
#include "base/task/sequenced_task_runner.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
namespace {
// The SHA256 of the SubjectPublicKeyInfo used to sign the extension.
// The extension id is: jamhcnnkihinmdlkakkaopbjbbcngflc
constexpr uint8_t kHyphenationPublicKeySHA256[32] = {
0x90, 0xc7, 0x2d, 0xda, 0x87, 0x8d, 0xc3, 0xba, 0x0a, 0xa0, 0xef,
0x19, 0x11, 0x2d, 0x65, 0xb2, 0x04, 0xfc, 0x2e, 0x3e, 0xbb, 0x35,
0x85, 0xae, 0x64, 0xca, 0x07, 0x61, 0x15, 0x12, 0x9e, 0xbc};
constexpr char kHyphenationManifestName[] = "Hyphenation";
constexpr base::FilePath::CharType kHyphenationRelativeInstallDir[] =
FILE_PATH_LITERAL("hyphen-data");
class HyphenationDirectory {
public:
static HyphenationDirectory* Get() {
static base::NoDestructor<HyphenationDirectory> hyphenation_directory;
return hyphenation_directory.get();
}
void Get(base::OnceCallback<void(const base::FilePath&)> callback) {
DVLOG(1) << __func__;
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
callbacks_.push_back(std::move(callback));
if (!dir_.empty()) {
FireCallbacks();
}
}
void Set(const base::FilePath& new_dir) {
DVLOG(1) << __func__ << "\"" << new_dir << "\"";
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
CHECK(!new_dir.empty());
if (new_dir == dir_) {
return;
}
dir_ = new_dir;
FireCallbacks();
}
private:
void FireCallbacks() {
DVLOG(1) << __func__ << " \"" << dir_
<< "\", callbacks=" << callbacks_.size();
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
CHECK(!dir_.empty());
std::vector<base::OnceCallback<void(const base::FilePath&)>> callbacks;
std::swap(callbacks, callbacks_);
for (base::OnceCallback<void(const base::FilePath&)>& callback :
callbacks) {
base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(std::move(callback), dir_));
}
}
base::FilePath dir_;
std::vector<base::OnceCallback<void(const base::FilePath&)>> callbacks_;
};
} // namespace
namespace component_updater {
HyphenationComponentInstallerPolicy::HyphenationComponentInstallerPolicy() =
default;
HyphenationComponentInstallerPolicy::~HyphenationComponentInstallerPolicy() =
default;
bool HyphenationComponentInstallerPolicy::
SupportsGroupPolicyEnabledComponentUpdates() const {
return true;
}
bool HyphenationComponentInstallerPolicy::RequiresNetworkEncryption() const {
// Update checks and pings associated with this component do not require
// confidentiality, since the component is identical for all users.
return false;
}
update_client::CrxInstaller::Result
HyphenationComponentInstallerPolicy::OnCustomInstall(
const base::Value::Dict& manifest,
const base::FilePath& install_dir) {
return update_client::CrxInstaller::Result(0); // Nothing custom here.
}
void HyphenationComponentInstallerPolicy::OnCustomUninstall() {}
void HyphenationComponentInstallerPolicy::ComponentReady(
const base::Version& version,
const base::FilePath& install_dir,
base::Value::Dict manifest) {
VLOG(1) << "Hyphenation Component ready, version " << version.GetString()
<< " in " << install_dir.value();
HyphenationDirectory* hyphenation_directory = HyphenationDirectory::Get();
hyphenation_directory->Set(install_dir);
}
// Called during startup and installation before ComponentReady().
bool HyphenationComponentInstallerPolicy::VerifyInstallation(
const base::Value::Dict& manifest,
const base::FilePath& install_dir) const {
return true;
}
base::FilePath HyphenationComponentInstallerPolicy::GetRelativeInstallDir()
const {
return base::FilePath(kHyphenationRelativeInstallDir);
}
void HyphenationComponentInstallerPolicy::GetHash(
std::vector<uint8_t>* hash) const {
hash->assign(std::begin(kHyphenationPublicKeySHA256),
std::end(kHyphenationPublicKeySHA256));
}
std::string HyphenationComponentInstallerPolicy::GetName() const {
return kHyphenationManifestName;
}
update_client::InstallerAttributes
HyphenationComponentInstallerPolicy::GetInstallerAttributes() const {
return update_client::InstallerAttributes();
}
// static
void HyphenationComponentInstallerPolicy::GetHyphenationDictionary(
base::OnceCallback<void(const base::FilePath&)> callback) {
HyphenationDirectory* hyphenation_directory = HyphenationDirectory::Get();
hyphenation_directory->Get(std::move(callback));
}
void RegisterHyphenationComponent(ComponentUpdateService* cus) {
VLOG(1) << "Registering Hyphenation component.";
auto installer = base::MakeRefCounted<ComponentInstaller>(
std::make_unique<HyphenationComponentInstallerPolicy>());
installer->Register(cus, base::OnceClosure());
}
} // namespace component_updater
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