Copy files over network via file share, user authentication

Question

I am building a .net C# console program to deploy file to a windows file share server (folder that is being shared). The path is :: \\\\192.168.0.76\\htdocs\\public

Answer 1

VB but easily translated to C#. Do this before your copy:

Private Sub Open_Remote_Connection(ByVal strComputer As String, ByVal strUserName As String, ByVal strPassword As String)
    Dim ProcessStartInfo As New System.Diagnostics.ProcessStartInfo
    ProcessStartInfo.FileName = "net"
    ProcessStartInfo.Arguments = "use \\" & strComputer & "\c$ /USER:" & strUsername & " " & strPassword
    ProcessStartInfo.WindowStyle = ProcessWindowStyle.Hidden
    System.Diagnostics.Process.Start(ProcessStartInfo)
    System.Threading.Thread.Sleep(2000)
End Sub

Answer 2

If you want to authenticate to a remote computer in order to move a file, you can use the LogonUser function to and WindowsIdentity to impersonate your user.

/// <summary>
/// Exécute une fonction en empruntant les credentials
/// </summary>
private T ApplyCredentials<T>(Func<T> func)
{
    IntPtr token;

    if (!LogonUser(
        _credentials.UserName,
        _credentials.Domain,
        _credentials.Password,
        LOGON32_LOGON_INTERACTIVE,
        LOGON32_PROVIDER_DEFAULT,
        out token))
    {
        Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
    }

    try
    {
        // On doit être impersonifié seulement le temps d'ouvrir le handle.
        using (var identity = new WindowsIdentity(token))
        using (var context = identity.Impersonate())
        {
            return func();
        }
    }
    finally
    {
        CloseHandle(token);
    }
}

// ...

if (_credentials != null)
{
    return this.ApplyCredentials(() => File.Open(path, mode, access, share));
}

return File.Open(path, mode, access, share);