public static void ShowEncryptMessage(Settings settings)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.Write("Encrypting... ");
Console.WriteLine("{0} -> {1}", settings.InputFileName, OutputFilenameGenerator.Generate(settings.InputFileName, EncryptAction.Encrypt));
Console.ResetColor();
}
static void Main(string[] args)
{
var settings = new Settings();
var optionSet = OptionSetHelper.DefineOptions(settings);
try
{
optionSet.Parse(args);
}
catch (OptionException e)
{
ConsoleWriter.WriteException(e);
}
if (settings.ShowHelp)
{
ConsoleWriter.ShowHelp(optionSet);
return;
}
var validator = new SettingsValidator();
var errorMessages = validator.Validate(settings);
if (errorMessages.Count > 0)
{
errorMessages.ForEach(Console.WriteLine);
ConsoleWriter.ShowHelp(optionSet);
return;
}
try
{
var saltStore = new SaltStore(settings.SaltFileName);
var encrypter = new FileEncryptRijndael(settings.Password, saltStore.CreateAndGet());
switch (settings.EncryptAction)
{
case EncryptAction.Decrypt:
ConsoleWriter.ShowDecryptMessage(settings);
encrypter.Decrypt(settings.InputFileName);
break;
case EncryptAction.Encrypt:
ConsoleWriter.ShowEncryptMessage(settings);
encrypter.Encrypt(settings.InputFileName);
break;
}
}
//catch (CryptographicException ex)
//catch (IOException ex)
catch (Exception ex)
{
ConsoleWriter.ShowException(ex);
}
}
public List<string> Validate(Settings settings)
{
if (settings.EncryptAction == EncryptAction.None)
{
ErrorMessages.Add("-encrypt -decrypt option is missing.");
}
if (string.IsNullOrEmpty(settings.InputFileName))
{
ErrorMessages.Add("Option -i is missing.");
}
if (string.IsNullOrEmpty(settings.Password))
{
ErrorMessages.Add("Option -p is missing.");
}
if (settings.EncryptAction == EncryptAction.Decrypt && !settings.InputFileName.Contains("_encrypted"))
{
ErrorMessages.Add("Encrypted file must end with '_encrypted' prefix (e.g. 'passwords_encrypted.txt')");
}
return ErrorMessages;
}
public static OptionSet DefineOptions(Settings settings)
{
return new OptionSet
{
{
"encrypt",
"Encrypt the file",
v => settings.EncryptAction = EncryptAction.Encrypt
},
{
"decrypt",
"Decrypt the file",
v => settings.EncryptAction = EncryptAction.Decrypt
},
{
"i|in=",
"the input {FILENAME}",
v => settings.InputFileName = v
},
{
"p|password="******"the {PASSWORD}",
v => settings.Password = v
},
{
"s|salt=",
"the {SALT} file (default is 'salt')",
v => settings.SaltFileName = v
},
{
"h|help",
"show this message and exit",
v => settings.ShowHelp = v != null
}
};
}