// try to log a person in using a username and password
public Person Login(string t_userName, string t_password)
{
Person retPerson_ = pd_.BloomFilterSearch(t_userName); // the person object to be returned
if (retPerson_ == null)
{
return(null); // if person is not found, return null;
}
return(retPerson_.Password.TestPassword(t_password)
? retPerson_ // if retPerson_'s password is the same as t_password return retPerson_
: null); // otherwise return null
/* old
* return (retPerson_ = pd_.BloomFilterSearch(t_userName)) != null
* && retPerson_.password.TestPassword(t_password)
* ? retPerson_
* : null; // return null if
*/
}
// Handle auth setup
private void HandleAuth()
{
const int MIN_USER_NAME_LEN = 1;
const int MAX_USER_NAME_LEN = 100;
if (lastUserName_ == txtInfo1_.Text &&
lastUserName_ != null)
{ // use cached username
if (HandlePasswords())
{
return;
}
goto success; // will i lose marks for using unconditional jumps?
}
// re-cache username
lastUserName_ = null;
if (string.IsNullOrWhiteSpace(txtInfo1_.Text) || // null check
txtInfo1_.Text.Length < MIN_USER_NAME_LEN || // length check
txtInfo1_.Text.Length > MAX_USER_NAME_LEN)
{ // invalid username
Error(Errors.shortUsername); // show error message
return; // fail
}
if (pd_.BloomFilterSearch(txtInfo1_.Text) != null) // test if person is already in database
{ // username has been taken
Error(Errors.badUsername); // show error message
return; // fail
}
// username has not been taken
lastUserName_ = txtInfo1_.Text; // set cache to user input
if (HandlePasswords()) // bad passwords
{
return; // fail
}
success :;
nextUserName_ = txtInfo1_.Text; // set username to user input
nextPassword_ = txtInfo2_.Text; // set password to user input
ShowConfigSetup(); // show the config setup
return; // success
}