public bool ExistsKey(string phone)
{
if (string.IsNullOrEmpty(phone))
{
return(false);
}
lock (KeyLocker)
{
var cacheKey = BuildCacheKey(phone);
var phoneKeys = KeyCache.Get <Dictionary <string, DateTime> >(cacheKey);
return(phoneKeys != null);
}
}
public Result ValidateKey(string phone, string key)
{
key = (key ?? string.Empty).Trim();
if (string.IsNullOrEmpty(phone) || string.IsNullOrEmpty(key))
{
return(Result.Empty);
}
var cacheCheck = BuildCacheKey("check" + phone);
int.TryParse(CheckCache.Get <string>(cacheCheck), out var counter);
if (++counter > AttemptCount)
{
return(Result.TooMuch);
}
CheckCache.Insert(cacheCheck, counter.ToString(CultureInfo.InvariantCulture), DateTime.UtcNow.Add(StoreInterval));
lock (KeyLocker)
{
var cacheKey = BuildCacheKey(phone);
var phoneKeys = KeyCache.Get <Dictionary <string, DateTime> >(cacheKey);
if (phoneKeys == null)
{
return(Result.Timeout);
}
if (!phoneKeys.ContainsKey(key))
{
return(Result.Invalide);
}
var createDate = phoneKeys[key];
SmsKeyStorageCache.RemoveFromCache(cacheKey);
if (createDate.Add(StoreInterval) < DateTime.UtcNow)
{
return(Result.Timeout);
}
CheckCache.Insert(cacheCheck, (--counter).ToString(CultureInfo.InvariantCulture), DateTime.UtcNow.Add(StoreInterval));
return(Result.Ok);
}
}
public bool GenerateKey(string phone, out string key)
{
if (string.IsNullOrEmpty(phone))
{
throw new ArgumentNullException("phone");
}
lock (KeyLocker)
{
var cacheKey = BuildCacheKey(phone);
var phoneKeys = KeyCache.Get <Dictionary <string, DateTime> >(cacheKey) ?? new Dictionary <string, DateTime>();
if (phoneKeys.Count > AttemptCount)
{
key = null;
return(false);
}
key = new Random().Next((int)Math.Pow(10, KeyLength - 1), (int)Math.Pow(10, KeyLength)).ToString(CultureInfo.InvariantCulture);
phoneKeys[key] = DateTime.UtcNow;
KeyCache.Insert(cacheKey, phoneKeys, DateTime.UtcNow.Add(StoreInterval));
return(true);
}
}
