/// <summary>
/// Validates the temporarily generated token.
/// User must be logged In to validate this token.
/// </summary>
/// <param name="userName">logged in userName</param>
/// <param name="Token">temporarily generated token</param>
/// <returns></returns>
public bool ValidateTemporarilyValidGeneratedToken(string userName, string Token, EmailFunctionType type)
{
var decryptedToken = Token.Decrypt();
DateTime dycriptedDate;
if (decryptedToken.Split(';')[2].Equals(type.ToString()))
{
if (DateTime.TryParse(decryptedToken.Split(';')[1], out dycriptedDate))
{
if (dycriptedDate > DateTime.Now)
{
using (var userContext = new UsersContext())
{
var userProfile = userContext.UserProfiles.Where(u => u.Email.Equals(userName)).FirstOrDefault();
var tokens = userProfile.TemporarilyValidGeneratedToken.Split(';');
foreach (var newToken in tokens)
{
if (newToken.Replace("Validated", "").Equals(Token))
{
var dycripteduserName = decryptedToken.Split(';')[0];
if (dycripteduserName == userName)
{
return true;
}
}
}
}
}
}
}
return false;
}
public bool CheckUserForValidatedTokenOrValidateToken(string email, string token, EmailFunctionType type)
{
using (var userContext = new UsersContext())
{
var userProfile = userContext.UserProfiles.Where(u => u.Email.Equals(email)).FirstOrDefault();
var tokens = userProfile.TemporarilyValidGeneratedToken.Split(';');
//We must make sure we can only have 1 validated token here
var validToken = tokens.Where(t => t.EndsWith("Validated")).FirstOrDefault();
var dycriptedvalidToken = string.IsNullOrEmpty(validToken) ? "" : validToken.Replace("Validated", "").Decrypt();
if (string.IsNullOrEmpty(validToken))
{
userProfile.TemporarilyValidGeneratedToken = userProfile.TemporarilyValidGeneratedToken.Replace(token, token + "Validated");
userContext.SaveChanges();
return false;
}
else
{
if (dycriptedvalidToken.Split(';')[2].Equals(type.ToString()))
{
return false;
}
else
{
//Remove the tokens and return true
//if we want to use these tokens for more then just email change we must only remove the 2 email change tokens.
userProfile.TemporarilyValidGeneratedToken = "";
userContext.SaveChanges();
return true;
}
}
}
}
/// <summary>
/// Generates a temporaryValid token using a username and datetime from now.
/// this token can be used as a variable in urls to identify valid users.
/// Make sure to Remove the token after it has been used or when they are no longer valid
/// </summary>
/// <param name="userName">username</param>
/// <param name="tokenExperationInMinutesFromNow">The ammount of minutes the token should be valid</param>
/// <returns></returns>
private string GenerateTemporaryValidToken(string userName, int tokenExperationInMinutesFromNow, EmailFunctionType type)
{
var token = string.Format("{0};{1};{2}", userName, DateTime.Now.AddMinutes(tokenExperationInMinutesFromNow), type.ToString()).Encrypt();
using (var userContext = new UsersContext())
{
var userProfile = userContext.UserProfiles.Where(u => u.Email.Equals(userName)).FirstOrDefault();
//If the token conaints a splitter it already has a set token, so just remove them and set it again
if (!string.IsNullOrEmpty(userProfile.TemporarilyValidGeneratedToken))
{
if (userProfile.TemporarilyValidGeneratedToken.Contains(';'))
{
userProfile.TemporarilyValidGeneratedToken = "";
userProfile.TemporarilyValidGeneratedToken = token;
}
else
{
userProfile.TemporarilyValidGeneratedToken += ";" + token;
}
}
else
{
userProfile.TemporarilyValidGeneratedToken = token;
}
userContext.SaveChanges();
}
return token;
}
