/// <summary>
/// Creates a Base64-encoded ticket based on the provided data.
/// </summary>
/// <param name="ticketData">Data used to create the ticket.</param>
/// <param name="secret">Secret key used to create the ticket.</param>
/// <param name="encode">True if the user id, user data, and tokens are to be encoded; false otherwise</param>
/// <returns>String ticket</returns>
/// <remarks>The ticket is created using the mod_auth_tkt algorithm.</remarks>
public static string Create(AuthenticationTicketData ticketData, string secret, bool encode = false)
{
if (ticketData == null)
{
return(null);
}
string digest = CreateDigest(ticketData, secret);
string userId = (encode) ? Encode(ticketData.UserId, secret, ticketData.UnixTimeStamp, 0) : ticketData.UserId;
string tokens = (encode)
? Encode(ticketData.TokensAsString, secret, ticketData.UnixTimeStamp, 4)
: ticketData.TokensAsString;
string userData = (encode) ? Encode(ticketData.UserData, secret, ticketData.UnixTimeStamp, 8) : ticketData.UserData;
string ticket = digest + ticketData.HexTimeStamp + userId + '!';
ticket += (string.IsNullOrEmpty(tokens)) ? userData : tokens + '!' + userData;
return(Base64Helper.Encode(ticket));
}
/// <summary>
/// Extracts the data from a provided ticket.
/// </summary>
/// <param name="ticket">Base64-encoded ticket to parse for data</param>
/// <param name="secret">Secret key used to create the ticket</param>
/// <param name="encoded">True if the user id, user data, and tokens are encoded; false otherwise</param>
/// <param name="ipAddress">IP Address used to create the ticket</param>
/// <returns>AuthenticationTicketData instance containing the parsed ticket data.</returns>
public static AuthenticationTicketData ExtractData(string ticket, string secret = null, bool encoded = false,
string ipAddress = AuthenticationTicketData.DefaultIPAddress)
{
if (string.IsNullOrWhiteSpace(ticket))
{
return(null);
}
if (string.IsNullOrWhiteSpace(secret))
{
secret = DefaultSecret;
}
AuthenticationTicketData ticketData = null;
ticket = Base64Helper.DecodeToString(ticket);
if (!string.IsNullOrWhiteSpace(ticket) && ticket.Length >= 40)
{
ticketData = Parse(ticket);
if (ticketData != null)
{
ticketData.IPAddress = ipAddress;
if (encoded)
{
ticketData.UserId = Decode(ticketData.UserId, secret, ticketData.UnixTimeStamp, 0);
ticketData.TokensAsString = Decode(ticketData.TokensAsString, secret, ticketData.UnixTimeStamp, 4);
ticketData.UserData = Decode(ticketData.UserData, secret, ticketData.UnixTimeStamp, 8);
}
}
}
return(ticketData);
}
