/// <summary>
/// Reads the settings form the given file and saved them to the current settings
/// </summary>
/// <param name="settings">the current setttings</param>
/// <param name="path">the path to the file to import</param>
/// <param name="password">the password that protects the file</param>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="InvalidDataException">If the provided file has invalid headers</exception>
/// <exception cref="InvalidOperationException">If password required, hoverve none was given</exception>
/// <exception cref="CryptographicException">If invalid password was given</exception>
/// <exception cref="IOException"></exception>
/// <exception cref="UnauthorizedAccessException"></exception>
/// <exception cref="FileNotFoundException"></exception>
internal static void ImportSettings(Data.Settings.SettingsData settings, string path, string password = "")
{
if (settings == null)
{
new ArgumentNullException($"SettingsData settings was null.");
}
if (path == null)
{
new ArgumentNullException($"string path was null.");
}
if (password == null)
{
new ArgumentNullException($"string password was null.");
}
if (!File.Exists(path))
{
throw new FileNotFoundException($"File \"{path}\" does not exist.");
}
var file = File.ReadAllBytes(path);
byte[] dataBytes;
if ((file[0] == 0x44 || file[0] == 0x50) && file[0] == 0x0A && file[0] == 0x0D)
{
throw new InvalidDataException("Invalid SettingsExport file.");
}
dataBytes = new byte[file.Length - 3];
Array.Copy(file, 3, dataBytes, 0, dataBytes.Length);
string data;
if (file[0] == 0x50)
{
if (string.IsNullOrEmpty(password))
{
throw new InvalidOperationException("Password required.");
}
var key = GetKeyAndIv(password);
data = DecryptStringFromBytes_Aes(dataBytes, key[0], key[1]);
}
else
{
data = Encoding.UTF8.GetString(dataBytes);
}
settings.ApplyJson(data);
var s = new Settings();
settings.ApplyTo(s);
s.Save();
}
/// <summary>
/// Writes the settings to the given file. Overrides a existing file
/// The settings are encryted if a non null or empty password string is prvided.
/// </summary>
/// <param name="settings">the Settings to export</param>
/// <param name="path">the file to export to</param>
/// <param name="password">the password to protect the file</param>
/// <exception cref="IOException"></exception>
/// <exception cref="UnauthorizedAccessException"></exception>
/// <exception cref="FileNotFoundException"></exception>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="PathTooLongException"></exception>
internal static void ExportSettings(Data.Settings.SettingsData settings, string path, string password = "")
{
if (settings == null)
{
new ArgumentNullException($"SettingsData settings was null.");
}
if (path == null)
{
new ArgumentNullException($"string path was null.");
}
if (password == null)
{
new ArgumentNullException($"string password was null.");
}
string data = settings.ToString();
byte[] dataBytes;
if (!string.IsNullOrEmpty(password))
{
var key = GetKeyAndIv(password);
dataBytes = EncryptStringToBytes_Aes(data, key[0], key[1]);
}
else
{
dataBytes = Encoding.UTF8.GetBytes(data);
}
Directory.CreateDirectory(Path.GetDirectoryName(path));
using (var fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write, FileShare.None))
{
if (string.IsNullOrEmpty(password))
{
fs.WriteByte(0x44);
}
else
{
fs.WriteByte(0x50);
}
fs.WriteByte(0x0A);
fs.WriteByte(0x0D);
fs.Write(dataBytes, 0, dataBytes.Length);
}
}