public static User ValidLogin(string password, User user)
{
byte[] newPassword = null;
if (!String.IsNullOrWhiteSpace(password))
{
newPassword = User.GenerateSHA256(password);
}
if (user == null)
{
return(null);
}
// User foundUser = users.Where(x => x.ID == id).FirstOrDefault();
// if (foundUser == null) return null;
if ((user.Password == null ||
user.Password.Length == 0))
{
if (String.IsNullOrWhiteSpace(password))
{
return(user);
}
}
else
{
if (newPassword != null &&
user.Password.SequenceEqual(newPassword))
{
return(user);
}
}
return(null);
}
public string AddEditUser(User user, bool customTransaction, bool updateUserLastUpdated, bool customID)
{
if (user == null)
{
return("User cannot be null.");
}
if (String.IsNullOrWhiteSpace(user.FullName))
{
return("The user's fullname cannot be empty.");
}
if (DefaultUser.DefaultUserName.ToUpper().Equals(user.FullName.ToUpper()))
{
return(String.Format("The user's name cannot be {0}.", DefaultUser.DefaultUserName));
}
if (user.PasswordChanged && (String.IsNullOrWhiteSpace(user.NewPassword) || user.NewPassword.Length > VARCHAR_StandardSize))
{
return("The user's password cannot be empty.");
}
if (user.Description != null && user.Description.Length > VARCHAR_StandardSize)
{
return("The user's description is too long.");
}
SqliteDataReader reader = null;
SqliteConnection conn = null;
try
{
SqliteTransaction transaction = null;
if (customTransaction)
{
if (_tempConn == null)
{
_tempConn = new SqliteConnection(@"data source=" + this.UsersFile);
_tempConn.Open();
_customTransaction = _tempConn.BeginTransaction();
}
conn = _tempConn;
}
else
{
conn = new SqliteConnection(@"data source=" + this.UsersFile);
conn.Open();
transaction = conn.BeginTransaction();
}
SqliteCommand cmd = new SqliteCommand(conn);
cmd.Parameters.Add(new SqliteParameter("@userID", user.ID));
string description = user.Description;
string fullName = user.FullName;
byte securityLevel = user.SecurityLevel;
if (user.ID > 0)
{
if (!customID)
{
cmd.CommandText = "SELECT id FROM User WHERE id = @userID";
reader = cmd.ExecuteReader();
if (!reader.HasRows)
{
return("Couldn't find a user with the ID " + user.ID);
}
reader.Close();
}
cmd.Parameters.Add(new SqliteParameter("@id", user.ID));
//force the admin properties to stay the same
if (user.ID == DefaultAdminUser.DefaultAdminID)
{
description = DefaultAdminUser.DefaultAdminDescription;
fullName = DefaultAdminUser.DefaultAdminName;
securityLevel = DefaultAdminUser.DefaultAdminSecurityLevel;
}
}
cmd.Parameters.Add(new SqliteParameter("@description", description));
cmd.Parameters.Add(new SqliteParameter("@fullname", fullName));
byte[] password = user.Password;
if (!customID && user.PasswordChanged)
{
if (String.IsNullOrWhiteSpace(user.NewPassword))
{
return("The password cannot be blank.");
}
password = User.GenerateSHA256(user.NewPassword);
cmd.Parameters.Add(new SqliteParameter("password", password));
}
else if (customID)
{
cmd.Parameters.Add(new SqliteParameter("password", user.Password));
}
cmd.Parameters.Add(new SqliteParameter("@securityLevel", securityLevel));
if (user.ID > 0 && !customID)
{
cmd.CommandText = "UPDATE User SET description = @description, fullname = @fullname, securityLevel = @securityLevel";
if (user.PasswordChanged)
{
cmd.CommandText += ", password = @password";
}
}
else
{
cmd.CommandText = "INSERT INTO User(";
if (customID)
{
cmd.CommandText += "id,";
}
cmd.CommandText += "description, fullname, password, securityLevel";
}
for (int i = 0; i < DBUserShared.FingerCount; ++i)
{
if (user.ID > 0 && !customID)
{
cmd.CommandText += String.Format(" ,fingerprint{0} = @fingerprint{0}", i);
}
else
{
cmd.CommandText += String.Format(" ,fingerprint{0}", i);
}
cmd.Parameters.Add(new SqliteParameter(String.Format("@fingerprint{0}", i), DBNull.Value));
}
foreach (FingerPrint fingerprint in user.FingerPrints)
{
string fp = String.Format("@fingerprint{0}", fingerprint.PrintNumber);
if (cmd.Parameters.Contains(fp) && fingerprint.Print != null && fingerprint.Print.Length != 0)
{
cmd.Parameters[fp].Value = DBUserShared.AES_Encrypt(fingerprint.Print);
}
}
if (user.ID > 0 && !customID)
{
cmd.CommandText += " WHERE ID = @id";
}
else
{
cmd.CommandText += ") VALUES(";
if (customID)
{
cmd.CommandText += "@userID,";
}
cmd.CommandText += "@description, @fullname, @password, @securityLevel";
for (int i = 0; i < DBUserShared.FingerCount; ++i)
{
cmd.CommandText += String.Format(" ,@fingerprint{0}", i);
}
cmd.CommandText += ")";
}
cmd.ExecuteNonQuery();
if (user.ID < 0 && !customID)
{
cmd.CommandText = "SELECT last_insert_rowid()";
reader = cmd.ExecuteReader();
while (reader.Read())
{
user.ID = int.Parse(reader[0].ToString());
cmd.Parameters["@userID"].Value = user.ID;
}
reader.Close();
}
if (updateUserLastUpdated)
{
cmd.CommandText = "DELETE FROM UserLastUpdated";
cmd.ExecuteNonQuery();
cmd.CommandText = "INSERT INTO UserLastUpdated(Value) VALUES(@value)";
cmd.Parameters.Add(new SqliteParameter("@value", DateTime.Now));
cmd.ExecuteNonQuery();
}
if (!customTransaction)
{
transaction.Commit();
}
return("");
}
catch (Exception ex)
{
return("Failed to add or edit user: " + ex.Message);
}
finally
{
if (reader != null)
{
reader.Close();
reader = null;
}
if (!customTransaction)
{
if (conn != null)
{
conn.Close();
conn = null;
}
}
}
}