10f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)// Copyright 2013 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 50f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)#ifndef COMPONENTS_NACL_BROWSER_NACL_VALIDATION_CACHE_H_ 60f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)#define COMPONENTS_NACL_BROWSER_NACL_VALIDATION_CACHE_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 82a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <vector> 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/containers/mru_cache.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Pickle; 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 140f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)namespace nacl { 150f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class NaClValidationCache { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NaClValidationCache(); 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~NaClValidationCache(); 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Get the key used for HMACing validation signatures. This should be a 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // string of cryptographically secure random bytes. 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& GetValidationCacheKey() const { 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return validation_cache_key_; 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Is the validation signature in the database? 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool QueryKnownToValidate(const std::string& signature, bool reorder); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Put the validation signature in the database. 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void SetKnownToValidate(const std::string& signature); 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Reset(); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Serialize(Pickle* pickle) const; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool Deserialize(const Pickle* pickle); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Testing functions 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t size() const { 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return validation_cache_.size(); 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void SetValidationCacheKey(std::string& key) { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) validation_cache_key_ = key; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<std::string> GetContents() const { 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<std::string> contents; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ValidationCacheType::const_iterator iter = validation_cache_.begin(); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (iter = validation_cache_.begin(); 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) iter != validation_cache_.end(); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) iter++) { 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents.push_back(iter->first); 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return contents; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool DeserializeImpl(const Pickle* pickle); 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef base::HashingMRUCache<std::string, bool> ValidationCacheType; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ValidationCacheType validation_cache_; 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string validation_cache_key_; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(NaClValidationCache); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 660f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)} // namespace nacl 670f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) 680f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)#endif // COMPONENTS_NACL_BROWSER_NACL_VALIDATION_CACHE_H_ 69