// create a new user
internal static void newUser(string id, string pass, GPLCAuthority auth)
{
try
{
using (SQLiteCommand sql = new SQLiteCommand("INSERT INTO User values(@id, @pass, @auth)"))
{
sql.Parameters.Add("@id", DbType.String).Value = id;
sql.Parameters.Add("@pass", DbType.String).Value = CryptoUtil.encryptSHA1(pass);
sql.Parameters.Add("@auth", DbType.String).Value = auth.ToString();
SQLiteDBMS.execUpdate(sql);
}
}
catch (SQLiteException ex)
{
switch (ex.ErrorCode)
{
case 1:
createSchema();
newUser(id, pass, auth);
break;
case 19:
default:
break;
}
}
}
// check if the user has the authority equal to or higher than a specific auth
public void Authenticate(GPLCAuthority auth)
{
if (authority > auth)
{
throw new UnauthorizedException(auth);
}
}
/* check if current user has the authority to do operation
* return true or false
* */
public static bool AuthVerify(GPLCAuthority auth)
{
try
{
Auth(auth);
return(true);
}
catch (UnauthorizedException)
{
return(false);
}
}
// get auth by id and password
public void Authenticate(string id, string pass)
{
this.id = id;
this.pass = pass;
try
{
/* create user and set its authority
* SecureUtil.newUser(id, pass, GPLCAuthority.Administrator);
* */
// verify id and passwod
_authority = SecureUtil.Authenticate(id, pass);
}
catch (WrongIdPassException ex)
{
_authority = GPLCAuthority.Anonymous;
throw ex;
}
}
/* check if current user has the authority to do operation
* throw exception when current user has no enough authority
* */
public static void Auth(GPLCAuthority auth)
{
user.Authenticate(auth);
}
public UnauthorizedException(GPLCAuthority authority)
{
this.authority = authority;
}
// get auth of anonymous
public void Authenticate()
{
_authority = GPLCAuthority.Anonymous;
}
