/*
  Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
  2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.

  This file is part of GNU Inetutils.

  GNU Inetutils 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.

  GNU Inetutils 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, see `http://www.gnu.org/licenses/'. */

/*
 * Copyright (c) 1995 Wietse Venema.  All rights reserved.
 *
 * Individual files may be covered by other copyrights (as noted in
 * the file itself.)
 *
 * This material was originally written and compiled by Wietse Venema
 * at Eindhoven University of Technology, The Netherlands, in 1990,
 * 1991, 1992, 1993, 1994 and 1995.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that this entire copyright notice is duplicated in all
 * such copies.
 *
 * This software is provided "as is" and without any expressed or
 * implied warranties, including, without limitation, the implied
 * warranties of merchantibility and fitness for any particular
 * purpose.
 */

/* Written by Wietse Venema.  With port to GNU Inetutils done by Alain
   Magloire.  */

#include <config.h>

#include <sys/types.h>

#include <sys/time.h>
#include <time.h>
#ifdef HAVE_UTMPX_H
# ifndef __USE_GNU
#  define __USE_GNU
# endif
# include <utmpx.h>
#else
# if HAVE_UTIL_H
#  include <util.h>
# endif
# include <utmp.h>
#endif
#include <string.h>
#include <unistd.h>

/* utmp_init - update utmp and wtmp before login */

void
utmp_init (char *line, char *user, char *id)
{
#ifdef HAVE_UTMPX_H
  struct utmpx utx;
#else
  struct utmp utx;
#endif
#if defined HAVE_STRUCT_UTMPX_UT_TV
  struct timeval tv;
#endif

  memset ((char *) &utx, 0, sizeof (utx));
#if defined HAVE_STRUCT_UTMP_UT_ID
  strncpy (utx.ut_id, id, sizeof (utx.ut_id));
#endif
#if defined HAVE_STRUCT_UTMP_UT_USER || defined HAVE_STRUCT_UTMPX_UT_USER
  strncpy (utx.ut_user, user, sizeof (utx.ut_user));
#elif defined HAVE_STRUCT_UTMP_UT_NAME || defined HAVE_STRUCT_UTMPX_UT_NAME
  strncpy (utx.ut_name, user, sizeof (utx.ut_name));
#endif
#if defined HAVE_STRUCT_UTMP_UT_HOST
  strncpy (utx.ut_host, user, sizeof (utx.ut_host));
#endif
  strncpy (utx.ut_line, line, sizeof (utx.ut_line));
#if defined HAVE_STRUCT_UTMP_UT_PID
  utx.ut_pid = getpid ();
#endif
#if defined HAVE_STRUCT_UTMP_UT_TYPE
  utx.ut_type = LOGIN_PROCESS;
#endif
#if defined HAVE_STRUCT_UTMPX_UT_TV
  gettimeofday (&tv, 0);
  utx.ut_tv.tv_sec = tv.tv_sec;
  utx.ut_tv.tv_usec = tv.tv_usec;
#else
  time (&(utx.ut_time));
#endif
#ifdef HAVE_UTMPX_H
  pututxline (&utx);
# ifdef HAVE_UPDWTMPX
  updwtmpx (PATH_WTMPX, &utx);
# endif
  endutxent ();
#elif HAVE_DECL_GETUTENT
  pututline (&utx);
# ifdef HAVE_UPDWTMP
  updwtmp (PATH_WTMP, &utx);
# else
  logwtmp (line, user, id);
# endif
  endutent ();
#else
  login (&utx);
#endif
}

/* utmp_ptsid - generate utmp id for pseudo terminal */

char *
utmp_ptsid (char *line, char *tag)
{
  static char buf[5];

  strncpy (buf, tag, 2);
  strncpy (buf + 2, line + strlen (line) - 2, 2);
  return (buf);
}
