120 lines
5.0 KiB
C#
120 lines
5.0 KiB
C#
#region Disclaimer / License
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// Copyright (C) 2011, Kenneth Skovhede
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// http://www.hexad.dk, opensource@hexad.dk
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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//
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace Duplicati.Library.Modules.Builtin
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{
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public class ConsolePasswordInput : Duplicati.Library.Interface.IGenericModule
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{
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/// <summary>
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/// These actions only use the local database and do not require access to the data inside the files.
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/// For List and ListChanges this may not be true if there is no local database
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/// </summary>
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private readonly static string[] PASSPHRASELESS_ACTIONS = { "CreateLogDb", "TestFilters" };
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#region IGenericModule Members
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public string Key { get { return "console-password-input"; } }
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public string DisplayName { get { return Strings.ConsolePasswordInput.Displayname; } }
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public string Description { get { return Strings.ConsolePasswordInput.Description; } }
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public bool LoadAsDefault { get { return true; } }
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public IList<Duplicati.Library.Interface.ICommandLineArgument> SupportedCommands { get { return null; } }
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public void Configure(IDictionary<string, string> commandlineOptions)
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{
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//Ensure the setup is valid, could throw an exception
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if (!commandlineOptions.ContainsKey("main-action"))
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return;
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//First see if a password is actually required for the action
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foreach (string s in PASSPHRASELESS_ACTIONS)
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if (string.Equals(s, commandlineOptions["main-action"], StringComparison.InvariantCultureIgnoreCase))
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return;
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//See if a password is already present or encryption is disabled
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if (!commandlineOptions.ContainsKey("passphrase") && !Duplicati.Library.Utility.Utility.ParseBoolOption(commandlineOptions, "no-encryption"))
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{
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//Get the passphrase
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bool confirm = string.Equals(commandlineOptions["main-action"], "backup", StringComparison.InvariantCultureIgnoreCase);
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commandlineOptions["passphrase"] = ReadPassphraseFromConsole(confirm);
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}
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}
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#endregion
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private static string ReadPassphraseFromConsole(bool confirm)
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{
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Console.Write("\n" + Strings.ConsolePasswordInput.EnterPassphrasePrompt + ": ");
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StringBuilder passphrase = new StringBuilder();
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while (true)
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{
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ConsoleKeyInfo k = Console.ReadKey(true);
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if (k.Key == ConsoleKey.Enter)
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break;
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if (k.Key == ConsoleKey.Escape)
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throw new Library.Interface.CancelException("");
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if (k.KeyChar != '\0') passphrase.Append(k.KeyChar);
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//Unix/Linux user know that there is no feedback, Win user gets scared :)
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if (System.Environment.OSVersion.Platform != PlatformID.Unix)
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Console.Write("*");
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}
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Console.WriteLine();
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if (confirm)
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{
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Console.Write("\n" + Strings.ConsolePasswordInput.ConfirmPassphrasePrompt + ": ");
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StringBuilder password2 = new StringBuilder();
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while (true)
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{
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ConsoleKeyInfo k = Console.ReadKey(true);
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if (k.Key == ConsoleKey.Enter)
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break;
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if (k.Key == ConsoleKey.Escape)
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return null;
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password2.Append(k.KeyChar);
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//Unix/Linux user know that there is no feedback, Win user gets scared :)
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if (System.Environment.OSVersion.Platform != PlatformID.Unix)
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Console.Write("*");
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}
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Console.WriteLine();
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if (passphrase.ToString() != password2.ToString())
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throw new Exception(Strings.ConsolePasswordInput.PassphraseMismatchError);
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}
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if (passphrase.ToString().Length == 0)
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throw new Exception(Strings.ConsolePasswordInput.EmptyPassphraseError);
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return passphrase.ToString();
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}
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}
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}
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