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//
// SafeProcess.cs
//
// Copyright (C) 2006 Novell, Inc.
//
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
using System;
using System.IO;
using System.Runtime.InteropServices;
using Mono.Unix;
using GLib;
namespace Beagle.Util {
public class SafeProcess {
private bool redirect_stdin, redirect_stdout, redirect_stderr;
private string[] args;
private UnixStream stdin_stream, stdout_stream, stderr_stream;
private int pid;
public string[] Arguments {
get { return args; }
set { args = value; }
}
public bool RedirectStandardInput {
get { return redirect_stdin; }
set { redirect_stdin = value; }
}
public bool RedirectStandardOutput {
get { return redirect_stdout; }
set { redirect_stdout = value; }
}
public bool RedirectStandardError {
get { return redirect_stderr; }
set { redirect_stderr = value; }
}
public Stream StandardInput {
get { return stdin_stream; }
}
public Stream StandardOutput {
get { return stdout_stream; }
}
public Stream StandardError {
get { return stderr_stream; }
}
public int Id {
get { return pid; }
}
[DllImport ("libglib-2.0.so.0")]
static extern bool g_spawn_async_with_pipes (string working_directory,
string[] argv,
string[] envp,
int flags,
IntPtr child_setup,
IntPtr child_data,
out int pid,
[In,Out] IntPtr standard_input,
[In,Out] IntPtr standard_output,
[In,Out] IntPtr standard_error,
out IntPtr error);
public void Start ()
{
if (args == null)
throw new ArgumentException ("Arguments cannot be empty");
IntPtr error;
if (args [args.Length - 1] != null) {
// Need to null-terminate the array.
string[] tmp_args = new string [args.Length + 1];
Array.Copy (args, tmp_args, args.Length);
args = tmp_args;
}
IntPtr in_ptr = IntPtr.Zero, out_ptr = IntPtr.Zero, err_ptr = IntPtr.Zero;
try {
if (RedirectStandardInput)
in_ptr = Marshal.AllocHGlobal (IntPtr.Size);
if (RedirectStandardOutput)
out_ptr = Marshal.AllocHGlobal (IntPtr.Size);
if (RedirectStandardError)
err_ptr = Marshal.AllocHGlobal (IntPtr.Size);
g_spawn_async_with_pipes (null, args, null,
1 << 2, // G_SPAWN_SEARCH_PATH
IntPtr.Zero, IntPtr.Zero, out pid,
in_ptr, out_ptr, err_ptr, out error);
if (error != IntPtr.Zero)
throw new SafeProcessException (new GException (error));
if (in_ptr != IntPtr.Zero) {
IntPtr v = Marshal.ReadIntPtr (in_ptr);
stdin_stream = new UnixStream ((int) v);
}
if (out_ptr != IntPtr.Zero) {
IntPtr v = Marshal.ReadIntPtr (out_ptr);
stdout_stream = new UnixStream ((int) v);
}
if (err_ptr != IntPtr.Zero) {
IntPtr v = Marshal.ReadIntPtr (err_ptr);
stderr_stream = new UnixStream ((int) v);
}
} finally {
if (in_ptr != IntPtr.Zero)
Marshal.FreeHGlobal (in_ptr);
if (out_ptr != IntPtr.Zero)
Marshal.FreeHGlobal (out_ptr);
if (err_ptr != IntPtr.Zero)
Marshal.FreeHGlobal (err_ptr);
}
}
public void Close ()
{
if (stdin_stream != null)
stdin_stream.Close ();
if (stdout_stream != null)
stdout_stream.Close ();
if (stderr_stream != null)
stderr_stream.Close ();
}
}
public class SafeProcessException : Exception {
internal SafeProcessException (GException gexception) : base (gexception.Message) { }
}
}
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