SparkleShare/Sparkles/SSHCommand.cs

//   SparkleShare, a collaboration and sharing tool.
//   Copyright (C) 2010  Hylke Bons <hylkebons@gmail.com>
//
//   This program is free software: you can redistribute it and/or modify
//   it under the terms of the GNU Lesser General Public License as 
//   published by the Free Software Foundation, either version 3 of the 
//   License, or (at your option) any later version.
//
//   This program is distributed in the hope that it will be useful,
//   but WITHOUT ANY WARRANTY; without even the implied warranty of
//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//   GNU General Public License for more details.
//
//   You should have received a copy of the GNU General Public License
//   along with this program. If not, see <http://www.gnu.org/licenses/>.


using System.IO;

namespace Sparkles {

    public class SSHCommand : Command
    {
        public static string SSHPath = "";

        public static string SSHCommandPath {
            get {
                return Path.Combine(SSHPath, "ssh").Replace("\\", "/");
            }
        }


        public SSHCommand(string command, string args) : this (command, args, null)
        {
        }


        public SSHCommand(string command, string args, SSHAuthenticationInfo auth_info) :
            base (Path.Combine (SSHPath, command), args)
        {
            string GIT_SSH_COMMAND = SSHPath;

            if (auth_info != null)
                GIT_SSH_COMMAND = FormatGitSSHCommand (auth_info);

            SetEnvironmentVariable ("GIT_SSH_COMMAND", GIT_SSH_COMMAND);
        }


        public static string FormatGitSSHCommand (SSHAuthenticationInfo auth_info)
        {
            return SSHCommandPath + " " + 
                "-i " + auth_info.PrivateKeyFilePath.Replace ("\\" , "/").Replace (" ", "\\ ") + " " +
                "-o UserKnownHostsFile=" + auth_info.KnownHostsFilePath.Replace ("\\", "/").Replace (" ", "\\ ") + " " +
                "-o IdentitiesOnly=yes" + " " + // Don't fall back to other keys on the system
                "-o PasswordAuthentication=no" + " " + // Don't hang on possible password prompts
                "-F /dev/null"; // Ignore the system's SSH config file
        }
    }
}