Tyler Gill
83a1dcfb64
InvariantCulture is useful when comparing / sorting human language strings in a culturely correct way. It handles things like accented letters in a way that makes sense to humans (e.g., 'a' should be sorted next to 'á', rather than after 'z'). Ordinal looks just at the raw code points of the characters. As such, it is recommended for use in cases when comparing system strings (file paths, command line parameters, config settings, etc.). Since it doesn't need to use the culture specific sorting rules, this method can often be faster. For more information, see https://stackoverflow.com/questions/492799/difference-between-invariantculture-and-ordinal-string-comparison (and other related questions)
120 lines
5.1 KiB
C#
120 lines
5.1 KiB
C#
#region Disclaimer / License
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// Copyright (C) 2015, The Duplicati Team
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// http://www.duplicati.com, info@duplicati.com
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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", "ListAffected", "SystemInfo", "SendMail" };
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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.OrdinalIgnoreCase))
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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.OrdinalIgnoreCase);
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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 Duplicati.Library.Interface.UserInformationException(Strings.ConsolePasswordInput.PassphraseMismatchError);
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}
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if (passphrase.ToString().Length == 0)
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throw new Duplicati.Library.Interface.UserInformationException(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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