/// <summary>
/// Inserts a new user authentication history.
/// </summary>
/// <param name="history"></param>
protected override void InsertUserHistory(AuthenticationHistory history)
{
TableProxyAuthenticationHistoryByUserName.Insert(history);
if (history.UserSession != null && !history.UserSession.RenewalToken.Equals(Guid.Empty))
{
TableProxyAuthenticationHistoryByToken.InsertOrUpdate(history);
}
}
/// <summary>
/// Gets the number of times a user name has failed authentication within the configured allowable failure period.
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
protected override int GetRecentFailedUserNameAuthenticationCount(string name)
{
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException("name", "User name must be supplied.");
}
var rkCompare = DateTime.MaxValue.Ticks - DateTime.UtcNow.AddMinutes(-1 * FailurePeriodMinutes).Ticks;
var rowKeyFilter = TableQuery.GenerateFilterCondition(TableConstants.RowKey,
QueryComparisons.LessThanOrEqual, //smallest is latest
rkCompare.ToString("d19"));
var attempts =
TableProxyAuthenticationHistoryByUserName.QueryPartition(String.Format("UserName|{0}", name.ToLower()).GetValidPartitionKey(),
rowKeyFilter, take: AllowedFailuresPerPeriod * 2);
if (attempts == null || attempts.Count == 0)
{
return(0);
}
//already sorted descending
return(attempts.TakeWhile(t => !t.Entity.IsAuthenticated).Count());
}
