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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_CACHE_IMPL_H_
#define CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_CACHE_IMPL_H_
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "base/files/file_path.h"
#include "base/functional/callback_forward.h"
#include "base/memory/weak_ptr.h"
#include "extensions/browser/updater/extension_cache.h"
namespace base {
template <typename T> struct DefaultSingletonTraits;
}
namespace extensions {
class ChromeOSExtensionCacheDelegate;
class LocalExtensionCache;
// Singleton call that caches extensions .crx files to share them between
// multiple users and profiles on the machine.
class ExtensionCacheImpl : public ExtensionCache {
public:
explicit ExtensionCacheImpl(
std::unique_ptr<ChromeOSExtensionCacheDelegate> delegate);
ExtensionCacheImpl(const ExtensionCacheImpl&) = delete;
ExtensionCacheImpl& operator=(const ExtensionCacheImpl&) = delete;
~ExtensionCacheImpl() override;
// Implementation of ExtensionCache.
void Start(base::OnceClosure callback) override;
void Shutdown(base::OnceClosure callback) override;
void AllowCaching(const std::string& id) override;
bool GetExtension(const std::string& id,
const std::string& expected_hash,
base::FilePath* file_path,
std::string* version) override;
void PutExtension(const std::string& id,
const std::string& expected_hash,
const base::FilePath& file_path,
const std::string& version,
PutExtensionCallback callback) override;
bool OnInstallFailed(const std::string& id,
const std::string& hash,
const CrxInstallError& error) override;
private:
// Callback that is called when local cache is ready.
void OnCacheInitialized();
// Check if this extension is allowed to be cached.
bool CachingAllowed(const std::string& id);
// Cache implementation that uses local cache dir.
std::unique_ptr<LocalExtensionCache> cache_;
// Set of extensions that can be cached.
std::set<std::string> allowed_extensions_;
// List of callbacks that should be called when the cache is ready.
std::vector<base::OnceClosure> init_callbacks_;
// Weak factory for callbacks.
base::WeakPtrFactory<ExtensionCacheImpl> weak_ptr_factory_{this};
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_CACHE_IMPL_H_
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