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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_NACL_HOST_NACL_VALIDATION_CACHE_H_
#define CHROME_BROWSER_NACL_HOST_NACL_VALIDATION_CACHE_H_
#pragma once
#include "base/memory/mru_cache.h"
class Pickle;
class NaClValidationCache {
public:
NaClValidationCache();
~NaClValidationCache();
// Get the key used for HMACing validation signatures. This should be a
// string of cryptographically secure random bytes.
const std::string& GetValidationCacheKey() const {
return validation_cache_key_;
}
// Is the validation signature in the database?
bool QueryKnownToValidate(const std::string& signature, bool reorder);
// Put the validation signature in the database.
void SetKnownToValidate(const std::string& signature);
void Reset();
void Serialize(Pickle* pickle) const;
bool Deserialize(const Pickle* pickle);
// Testing functions
size_t size() const {
return validation_cache_.size();
}
void SetValidationCacheKey(std::string& key) {
validation_cache_key_ = key;
}
std::vector<std::string> GetContents() const {
std::vector<std::string> contents;
ValidationCacheType::const_iterator iter = validation_cache_.begin();
for (iter = validation_cache_.begin();
iter != validation_cache_.end();
iter++) {
contents.push_back(iter->first);
}
return contents;
}
private:
bool DeserializeImpl(const Pickle* pickle);
typedef base::HashingMRUCache<std::string, bool> ValidationCacheType;
ValidationCacheType validation_cache_;
std::string validation_cache_key_;
DISALLOW_COPY_AND_ASSIGN(NaClValidationCache);
};
#endif // CHROME_BROWSER_NACL_HOST_NACL_VALIDATION_CACHE_H_
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