oct-group.h

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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 1996-2023 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave 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, either version 3 of the License, or
// (at your option) any later version.
//
// Octave 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 Octave; see the file COPYING.  If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
 
#if ! defined (octave_oct_group_h)
#define octave_oct_group_h 1
 
#include "octave-config.h"
 
#include <string>
 
#include <sys/types.h>
 
#include "str-vec.h"
 
OCTAVE_BEGIN_NAMESPACE(octave)
 
OCTAVE_BEGIN_NAMESPACE(sys)
 
class
OCTAVE_API
group
{
public:
 
  group (void)
    : m_name (), m_passwd (), m_gid (0), m_mem (), m_valid (false)
  { }
 
  group (const group& gr)
    : m_name (gr.m_name), m_passwd (gr.m_passwd),
      m_gid (gr.m_gid), m_mem (gr.m_mem), m_valid (gr.m_valid)
  { }
 
  group& operator = (const group& gr)
  {
    if (this != &gr)
      {
        m_name = gr.m_name;
        m_passwd = gr.m_passwd;
        m_gid = gr.m_gid;
        m_mem = gr.m_mem;
        m_valid = gr.m_valid;
      }
 
    return *this;
  }
 
  std::string name (void) const;
 
  std::string passwd (void) const;
 
  gid_t gid (void) const;
 
  string_vector mem (void) const;
 
  bool ok (void) const { return m_valid; }
 
  operator bool () const { return ok (); }
 
  static group getgrent (void);
  static group getgrent (std::string& msg);
 
  static group getgrgid (gid_t gid);
  static group getgrgid (gid_t gid, std::string& msg);
 
  static group getgrnam (const std::string& nm);
  static group getgrnam (const std::string& nm, std::string& msg);
 
  static int setgrent (void);
  static int setgrent (std::string& msg);
 
  static int endgrent (void);
  static int endgrent (std::string& msg);
 
private:
 
  // The group name.
  std::string m_name;
 
  // The group password.
  std::string m_passwd;
 
  // The numeric group id.
  gid_t m_gid;
 
  // The members of the group;
  string_vector m_mem;
 
  // Flag that says whether we have been properly initialized.
  bool m_valid;
 
  // This is how we will create an group object from a pointer
  // to a struct group.
  group (void *p, std::string& msg);
};
 
OCTAVE_END_NAMESPACE(sys)
OCTAVE_END_NAMESPACE(octave)
 
#endif