private void OnButtonSaveClicked(object _, RoutedEventArgs _2)
{
// Checks if the port couldn't be passed
if (!int.TryParse(this.FieldPort.Text, out int port))
{
this.ShowError(Lang.config_save_port);
return;
}
this.cfg.Port = port;
try
{
// Tries to load the private key
this.cfg.PrivateKey = SimpleSecurityUtils.LoadRSAFromJson(JObject.Parse(this.FieldRSA.Text));
}
catch
{
this.ShowError(Lang.config_save_key);
return;
}
// Sets the host
this.cfg.Host = this.FieldHost.Text;
try
{
// Tries to save the config
this.cfg.SaveConfig(PLCA.CONFIG_PATH, this.password);
// Updates the main config
PLCA.LOADED_CONFIG = this.cfg;
// Closes the window
this.Close();
}
catch (Exception ex)
{
// Shows the error
this.ShowError(Lang.config_save_unknown, ex.Message);
}
}
/// <summary>
/// Loads the given config-file, decryptes it using the passed key and loads it as a config object
/// </summary>
/// <param name="filePath">The path to the configuration file.</param>
/// <param name="key">The key to decrypt those bytes</param>
/// <returns>The fully loaded config</returns>
/// <exception cref="ConfigInvalidKeyException">If the given key couldn't decrypt the config</exception>
/// <exception cref="ConfigCurruptedException">If the config seems to be currupted</exception>
/// <exception cref="Exception">All exception that can be passed by File.ReadAllBytes using the filepath.</exception>
public static Config LoadConfig(string filePath, string key)
{
// Reads the content of the passed config file
byte[] rawData = File.ReadAllBytes(filePath);
// Generates the actual key and iv from the previous plain text key
byte[] aesKey = SimpleSecurityUtils.HashSHA256(Encoding.UTF8.GetBytes(key));
byte[] aesIv = SimpleSecurityUtils.HashMD5(Encoding.UTF8.GetBytes(key));
// Tries to decrypt the config
byte[] decrypted = SimpleSecurityUtils.DecryptAES(rawData, aesKey, aesIv);
// Checks if the decryption failed
if (decrypted == null)
{
throw new ConfigInvalidKeyException();
}
try
{
// The config that will be created
Config cfg = new Config();
// Tries to parse the config from json
JObject json = JObject.Parse(Encoding.UTF8.GetString(decrypted));
// Gets all values
cfg.Port = (int)json["port"];
cfg.Host = (string)json["host"] ?? string.Empty;
cfg.PrivateKey = SimpleSecurityUtils.LoadRSAFromJson((JObject)json["rsa"]);
// Returns the fully loaded config
return(cfg);
}
catch
{
throw new ConfigCurruptedException(Encoding.UTF8.GetString(decrypted));
}
}