public static string Register(kuroneko.Pages.Database.Entities.User user)
{
// validation done beore this
// count number of user with this name , hoping it to be zero;
string query = string.Format("SELECT COUNT(*) FROM Login WHERE username = @username ");
command.CommandText = query;
try
{
connection.Open();
command.Parameters.Add(new SqlParameter("@username", user.username));
int amountOFUsers = (int)command.ExecuteScalar();
command.Parameters.Clear();
if (amountOFUsers < 1) // user does not exist
{
query = string.Format("INSERT INTO Login VALUES (@username, @user_type, @password, @pass_salt, @tries, @wait_time)");
command.CommandText = query;
Security.Hasher hasher = new Security.Hasher();
string passSalt;
string password = hasher.GenSaltSHA256(user.password, out passSalt);
command.Parameters.Add(new SqlParameter("@username", user.username)); //parameter to store the hashed username
command.Parameters.Add(new SqlParameter("@user_type", user.user_type)); // maybe hash too mmm
command.Parameters.Add(new SqlParameter("@password", password)); //parameter to store the hashed password
command.Parameters.Add(new SqlParameter("@pass_salt", passSalt));
int tries = 0; // no failed password logins yes
DateTime time = DateTime.Now;
command.Parameters.Add(new SqlParameter("@tries", System.Data.SqlDbType.Int));
command.Parameters["@tries"].Value = tries;
command.Parameters.Add(new SqlParameter("@wait_time", System.Data.SqlDbType.DateTime));
command.Parameters["@wait_time"].Value = time;
command.ExecuteNonQuery(); // store user
command.Parameters.Clear();
return("registration successful");
}
else
{
return("a User with this name exists");
}
}
finally
{
connection.Close();
}
}
public static string Encrypt(string pToEncrypt)
{
Security.Hasher hs = new Security.Hasher();
hs.HashKey = Encoding.UTF8.GetBytes("Panduo (Hangzhou) Information Technology");
hs.HashText = pToEncrypt;
return(hs.SHA512ManagedHasher());
}
/// <summary>
/// returns null if no user found,,
/// returns usertype = "wait_time" means to many trie.
/// returns User(username, user_type, currenttime); if found,,
/// check so user is NOT NULL,,
///
/// </summary>
/// <param name="username"></param>
/// <param name="password"></param>
/// <returns></returns>
public static Pages.Database.Entities.User LoginUser(string username, string password)
{
string query = string.Format("SELECT COUNT(*) FROM Login WHERE username = @username ");
command.CommandText = query;
try
{
connection.Open();
command.Parameters.Add(new SqlParameter("@username", username));
int amountOFUsers = (int)command.ExecuteScalar();
if (amountOFUsers == 1) // only one
{
// now get password. password salt, Date and tries to see if locked out
query = string.Format("SELECT password, pass_salt,tries, wait_time FROM Login WHERE username = @username");
command.CommandText = query;
SqlDataReader reader = command.ExecuteReader();
string Hashed_Pass_salt = null;
string Hashed_password = null;
int tries = 0;
DateTime storeddate = DateTime.Now;
DateTime currenttime = DateTime.Now;
currenttime.ToLocalTime();
while (reader.Read())
{
Hashed_password = reader.GetString(0);
Hashed_Pass_salt = reader.GetString(1);
tries = reader.GetInt32(2);
storeddate = reader.GetDateTime(3);
}
reader.Close();
if (0 < DateTime.Compare(currenttime, storeddate)) // T1 if later than T2 = greater than zero IF FAIL CANT LOGIN at this time
{
Security.Hasher hasher = new Security.Hasher();
if (hasher.TestPassword(password, Hashed_Pass_salt, Hashed_password)) // pasword check.
{
// reset user tries on successfull login
tries = 0;
query = string.Format("UPDATE Login SET tries = @tries WHERE username =@username");
command.Parameters.Add(new SqlParameter("@tries", System.Data.SqlDbType.Int));
command.Parameters["@tries"].Value = tries;
command.CommandText = query;
command.ExecuteNonQuery(); // update
// get user information going to be more info so suing reader.
query = string.Format("SELECT user_type FROM Login WHERE username = @username");
command.CommandText = query;
SqlDataReader reader2 = command.ExecuteReader();
string user_type = "user";
while (reader2.Read())
{
user_type = reader2.GetString(0);
}
reader2.Close();
command.Parameters.Clear();
// create return of user
Pages.Database.Entities.User user = null;
user = new Entities.User(username, user_type, currenttime);
return(user);
}
else
{
tries++; // Incriment the tries by one
query = string.Format("UPDATE Login SET tries = @tries WHERE username =@username");
command.Parameters.Add(new SqlParameter("@tries", System.Data.SqlDbType.Int));
command.Parameters["@tries"].Value = tries;
if (tries > 3) // three strikes your out add 1*tries min , change Query
{
currenttime = currenttime.AddMinutes(1 * tries); // the more you fail the longer this is gona take.
query = string.Format("UPDATE Login SET tries = @tries, wait_time=@wait_time WHERE username =@username");
command.Parameters.Add(new SqlParameter("@wait_time", System.Data.SqlDbType.DateTime));
command.Parameters["@wait_time"].Value = currenttime;
}
command.CommandText = query;
command.ExecuteNonQuery();
command.Parameters.Clear();
///YOU ARE HERE add parameters
return(null);
}
}
else
{
Pages.Database.Entities.User user = null;
user = new Entities.User(username, "wait_time", storeddate);
command.Parameters.Clear();
return(user);
}
}
else // no user
{
return(null);
}
}
finally
{
command.Parameters.Clear();
connection.Close();
}
}
