FxSsh

FxSsh is a lightweight SSH server side application as SSH reinforcement of GitCandy.

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Sample code

static void Main(string[] args)
{
    var server = new SshServer();
    server.AddHostKey("ssh-rsa", "<RSAKeyValue><Modulus>xXKzcIH/rzcfv2D7VcvLdxR5S5iw2TTsP65Aa82S4+9ZIqLPTNtuzr76Mz6Cx0yDOhawHlIujtalqaaQzaUvkudCtMcVMnj37OcCYz7XDAYejalCxf/vtJo7U4mnYdCM+nAOQKNIDKLGbLtGuEAGwdi560DOJY2plhnBf1oOI+k=</Modulus><Exponent>AQAB</Exponent><P>37kMr9YiU4cSqHqTJSjBJ/szG2O4n5xSIlPy4MZ4aAN5NALHxfsN0dq1y8NL6GTLMI5qoykvp4Bjrm2ZgU1cDQ==</P><Q>4e84rF+UsFBfQEKJc2pbACWWJjttNW0hccdQZzA3IUxRmd/Z4yEMr1L70TP0XV7dw1RDs1JyU7xnXBIbGy5ETQ==</Q><DP>vP0TbI6VnL3j0xMIrkFJOj8Ho0GQOrTQ5VLJP3wpRqR4hKk8nVBBEl+RZznpK73Jr5D/ICmwqezZSAYpwILbGQ==</DP><DQ>bHdzZtWwRYEgaXJIGL+7lnN1BT/MazTMNJpykEeGgBbqqgvcx/zq4RTezg26SEUuBANlSSbQukCeAoayurbYlQ==</DQ><InverseQ>Irq9vR7CXIVR+r09caYIxIY8BOig+HShN1bXvATERJcjTW2jUgJrUttDGNEx70/hBd7m1NWCZz5YO3RH9Bdf5w==</InverseQ><D>AqxsufxFcW9TDCAmQK4mwVdsoQjRp2jfcULmkM8fl9u40dtxTr6Csv5dz7qfKLWxHTGlDUDabCK2t/DCcZZoA3rsqwLADe4ZerDdg6xiq4MBzNprM8Y0IfNESEdFB9T0T73ONQCsMalUzEvUknC4Ed4Fya34LUHntgQtEhXpDJE=</D></RSAKeyValue>");
    server.AddHostKey("ssh-dss", "<DSAKeyValue><P>1fge/S/6Y42F73v/RhtkZQUEgNktLUzjf4zcJPse2JfXGqtg3lMaEiEDbb/2Nm4Q/M7iksZxlIxge0BkP1ul69+Tovl+Gg+hI+OPGaKlD/1dnX4D4i1FiOpnjtyoCTeZysJ5X8nO1lSInDRnRv46gHk4cHSFVKILKY7CVo1sf0s=</P><Q>tb2irBOnujteP+kf5HmH0yXepE8=</Q><G>HJfQK2Sdd5vN47HWVdmRRYhwAhiVoP98l7FZ3FzVxZvE/CurAL2xVrDi9modbLg0UA1JHeOi6h9FTI9ijepnqRscBKFlyIny0wh15sc8EMcZzG/vJVH2M48ps1knt793sxEwjU/SPYxE7UEX5HGa/KyLuP6Ev/0z4WOOIJ62B5w=</G><Y>ebWWjjGiFpfKfaXlrY3SiMorrkvge/UEeHd5E27RS4B/BBlm9OhdNBFq3zzILAa3X8KvDOGlVZgTYqDchp3/SK/Y8HsbqNyTyqDMNvcnHILDqSrWmGMQEA/0kGiPn0nwEcA87F1osCro7Y70SuLNwUOl3xh+gQKdi5V6WU75gaw=</Y><Seed>w0QY1PFWINvz3x2OZlVF6Vi5cCw=</Seed><PgenCounter>UQ==</PgenCounter><X>SFKXJnLYP8UM5tlOCpVQ0S2yE78=</X></DSAKeyValue>");
    server.ConnectionAccepted += server_ConnectionAccepted;

    server.Start();

    Task.Delay(-1).Wait();
}

static void server_ConnectionAccepted(object sender, Session e)
{
    Console.WriteLine("Accepted a client.");

    e.ServiceRegistered += e_ServiceRegistered;
}

static void e_ServiceRegistered(object sender, SshService e)
{
    var session = (Session)sender;
    Console.WriteLine("Session {0} requesting {1}.",
        BitConverter.ToString(session.SessionId).Replace("-", ""), e.GetType().Name);

    if (e is UserauthService)
    {
        var service = (UserauthService)e;
        service.Userauth += service_Userauth;
    }
    else if (e is ConnectionService)
    {
        var service = (ConnectionService)e;
        service.CommandOpened += service_CommandOpened;
    }
}

static void service_Userauth(object sender, UserauthArgs e)
{
    Console.WriteLine("Client {0} fingerprint: {1}.", e.KeyAlgorithm, e.Fingerprint);

    e.Result = true;
}

static void service_CommandOpened(object sender, SessionRequestedArgs e)
{
    Console.WriteLine("Channel {0} runs command: \"{1}\".", e.Channel.ServerChannelId, e.CommandText);

    var allow = true; // func(e.CommandText, e.AttachedUserauthArgs);

    if (!allow)
        return;

    var parser = new Regex(@"(?<cmd>git-receive-pack|git-upload-pack|git-upload-archive) \'/?(?<proj>.+)\.git\'");
    var match = parser.Match(e.CommandText);
    var command = match.Groups["cmd"].Value;
    var project = match.Groups["proj"].Value;

    var git = new GitService(command, project);

    e.Channel.DataReceived += (ss, ee) => git.OnData(ee);
    e.Channel.CloseReceived += (ss, ee) => git.OnClose();
    git.DataReceived += (ss, ee) => e.Channel.SendData(ee);
    git.CloseReceived += (ss, ee) => e.Channel.SendClose(ee);

    git.Start();
}

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License

The MIT license