//public void ReduceMemoryUsage(object sender, MemoryUsageLimiter.ReduceMemoryUsageEventParameters parameters) //{ //_ipHistoryCache.RecoverSpace(parameters.FractionOfMemoryToTryToRemove); //} public Simulator(DebugLogger logger, string path, ExperimentalConfiguration myExperimentalConfiguration, SimulatedPasswords simPasswords) { _simPasswords = simPasswords; _logger = logger; _AttackAttemptsWithValidPasswords = //System.IO.TextWriter.Synchronized new ConcurrentStreamWriter(path + "AttackAttemptsWithValidPasswords.txt"); //(new StreamWriter(new FileStream(path + "AttackAttemptsWithValidPasswords.txt", FileMode.CreateNew, FileAccess.Write))); _LegitimateAttemptsWithValidPasswords = //System.IO.TextWriter.Synchronized new ConcurrentStreamWriter(path + "LegitimateAttemptsWithValidPasswords.txt"); //(new StreamWriter(new FileStream(path + "LegitiamteAttemptsWithValidPasswords.txt", FileMode.CreateNew, FileAccess.Write))); _OtherAttempts = //System.IO.TextWriter.Synchronized new ConcurrentStreamWriter(path + "OtherAttempts.txt"); //(new StreamWriter(new FileStream(path + "OtherAttempts.txt", FileMode.CreateNew, FileAccess.Write))); _logger.WriteStatus("Entered Simulator constructor"); _experimentalConfiguration = myExperimentalConfiguration; BlockingAlgorithmOptions options = _experimentalConfiguration.BlockingOptions; _logger.WriteStatus("Creating binomial ladder"); _binomialLadderFilter = new BinomialLadderFilter(options.NumberOfBitsInBinomialLadderFilter_N, options.HeightOfBinomialLadder_H); _ipHistoryCache = new ConcurrentDictionary <IPAddress, SimIpHistory>(); // new SelfLoadingCache<IPAddress, SimIpHistory>(address => new SimIpHistory(options.NumberOfFailuresToTrackForGoingBackInTimeToIdentifyTypos)); _userAccountController = new SimulatedUserAccountController(); //_memoryUsageLimiter = new MemoryUsageLimiter(); //_memoryUsageLimiter.OnReduceMemoryUsageEventHandler += ReduceMemoryUsage; _recentIncorrectPasswords = new AgingMembershipSketch(16, 128 * 1024); _logger.WriteStatus("Exiting Simulator constructor"); }
/// <summary> /// Create accounts, generating passwords, primary IP /// </summary> public void Generate(ExperimentalConfiguration experimentalConfiguration) { SimulatedUserAccountController simUserAccountController = new SimulatedUserAccountController(); _logger.WriteStatus("Creating {0:N0} benign accounts", experimentalConfiguration.NumberOfBenignAccounts); ConcurrentBag <SimulatedUserAccount> benignSimulatedAccountBag = new ConcurrentBag <SimulatedUserAccount>(); // // Create benign accounts in parallel Parallel.For(0, (int)experimentalConfiguration.NumberOfBenignAccounts, (index) => { if (index > 0 && index % 10000 == 0) { _logger.WriteStatus("Created {0:N0} benign accounts", index); } SimulatedUserAccount userAccount = simUserAccountController.Create( "user_" + index.ToString(), _simPasswords.GetPasswordFromWeightedDistribution() ); userAccount.ClientAddresses.Add(_ipPool.GetNewRandomBenignIp()); userAccount.Cookies.Add(StrongRandomNumberGenerator.Get64Bits().ToString()); benignSimulatedAccountBag.Add(userAccount); double inverseFrequency = Distributions.GetLogNormal(0, 1); if (inverseFrequency < 0.01d) { inverseFrequency = 0.01d; } if (inverseFrequency > 50d) { inverseFrequency = 50d; } double frequency = 1 / inverseFrequency; lock (BenignAccountSelector) { BenignAccountSelector.AddItem(userAccount, frequency); } }); BenignAccounts = benignSimulatedAccountBag.ToList(); _logger.WriteStatus("Finished creating {0:N0} benign accounts", experimentalConfiguration.NumberOfBenignAccounts); // // Right after creating benign accounts we create IPs and accounts controlled by the attacker. // (We create the attacker IPs here, and not earlier, because we need to have the benign IPs generated in order to create overlap) _logger.WriteStatus("Creating attacker IPs"); _ipPool.GenerateAttackersIps(); _logger.WriteStatus("Creating {0:N0} attacker accounts", experimentalConfiguration.NumberOfAttackerControlledAccounts); ConcurrentBag <SimulatedUserAccount> maliciousSimulatedAccountBag = new ConcurrentBag <SimulatedUserAccount>(); // // Create accounts in parallel Parallel.For(0, (int)experimentalConfiguration.NumberOfAttackerControlledAccounts, (index) => { SimulatedUserAccount userAccount = simUserAccountController.Create( "attacker_" + index.ToString(), _simPasswords.GetPasswordFromWeightedDistribution()); userAccount.ClientAddresses.Add(_ipPool.GetRandomMaliciousIp()); maliciousSimulatedAccountBag.Add(userAccount); }); AttackerAccounts = maliciousSimulatedAccountBag.ToList(); _logger.WriteStatus("Finished creating {0:N0} attacker accounts", experimentalConfiguration.NumberOfAttackerControlledAccounts); // // Now create full UserAccount records for each simulated account and store them into the account context Parallel.ForEach(BenignAccounts.Union(AttackerAccounts), (simAccount, loopState) => { //if (loopState. % 10000 == 0) // _logger.WriteStatus("Created account {0:N0}", index); simAccount.CreditHalfLife = experimentalConfiguration.BlockingOptions.AccountCreditLimitHalfLife; simAccount.CreditLimit = experimentalConfiguration.BlockingOptions.AccountCreditLimit; foreach (string cookie in simAccount.Cookies) { simUserAccountController.HasClientWithThisHashedCookieSuccessfullyLoggedInBefore( simAccount, LoginAttempt.HashCookie(cookie)); } }); _logger.WriteStatus("Finished creating user accounts for each simluated account record"); }