~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2011 Andrew Hutchings

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; version 2 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, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#pragma once

#include <unistd.h>

#include <pwd.h>

#include <cstring>

class UserDetect

{

  public:

    const char* getUser() { return user.empty() ? "" : &user[0]; }

    UserDetect()

    {

      long pw_len= sysconf(_SC_GETPW_R_SIZE_MAX);

      struct passwd pw_struct;

      struct passwd* pw_tmp_struct;

      char *pw_buffer= new char[pw_len];

      if (getpwuid_r(geteuid(), &pw_struct, pw_buffer, pw_len, &pw_tmp_struct) == 0)

        user.assign(pw_struct.pw_name, pw_struct.pw_name + strlen(pw_struct.pw_name) + 1);

      delete[] pw_buffer;

    }

  private:

    std::vector<char> user;

};