libptytty/src/logging.C

// This file is part of libptytty. Do not make local modifications.
// http://software.schmorp.de/pkg/libptytty

/*----------------------------------------------------------------------*
 * File:        logging.C
 *----------------------------------------------------------------------*
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (c) 1992      John Bovey <jdb@ukc.ac.uk>
 *                              - original version
 * Copyright (c) 1993      lipka
 * Copyright (c) 1993      Brian Stempien <stempien@cs.wmich.edu>
 * Copyright (c) 1995      Raul Garcia Garcia <rgg@tid.es>
 * Copyright (c) 1995      Piet W. Plomp <piet@idefix.icce.rug.nl>
 * Copyright (c) 1997      Raul Garcia Garcia <rgg@tid.es>
 * Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com>
 *                              - extensive modifications
 * Copyright (c) 1999      D J Hawkey Jr <hawkeyd@visi.com>
 *                              - lastlog support
 * Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
 * Copyright (c) 2006      Emanuele Giaquinta <e.giaquinta@glauco.it>
 *
 * 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; either 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *----------------------------------------------------------------------*/

#include "config.h"

#include "ptytty.h"

#if UTMP_SUPPORT

#include <cstdio>
#include <cstring>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <errno.h>

/*
 * BSD style utmp entry
 *      ut_line, ut_name, ut_host, ut_time
 * SYSV style utmp (and utmpx) entry
 *      ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time
 */

/* ------------------------------------------------------------------------- */
/*
 * Write a BSD style utmp entry
 */
#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
static int
write_bsd_utmp (int utmp_pos, struct utmp *wu)
{
  int             fd;

  if (utmp_pos <= 0 || (fd = open (UTMP_FILE, O_WRONLY)) == -1)
    return 0;

  if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
    write (fd, wu, sizeof (struct utmp));
  close (fd);
  return 1;
}
#endif

/* ------------------------------------------------------------------------- */
/*
 * Update a BSD style wtmp entry
 */
#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
static void
update_wtmp (const char *fname, const struct utmp *putmp)
{
  int             fd, gotlock, retry;
  struct flock    lck;  /* fcntl locking scheme */
  struct stat     sbuf;

  if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
    return;

  lck.l_whence = SEEK_END;      /* start lock at current eof */
  lck.l_len = 0;                /* end at ``largest possible eof'' */
  lck.l_start = 0;
  lck.l_type = F_WRLCK; /* we want a write lock */

  /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
  for (retry = 10, gotlock = 0; retry--;)
    if (fcntl (fd, F_SETLK, &lck) != -1)
      {
        gotlock = 1;
        break;
      }
    else if (errno != EAGAIN && errno != EACCES)
      break;
  if (!gotlock)
    {
      /* give it up */
      close (fd);
      return;
    }
  if (fstat (fd, &sbuf) == 0)
    if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
      ftruncate (fd, sbuf.st_size);     /* remove bad writes */

  lck.l_type = F_UNLCK; /* unlocking the file */
  fcntl (fd, F_SETLK, &lck);
  close (fd);
}
#endif

/* ------------------------------------------------------------------------- */
#ifdef LASTLOG_SUPPORT
static void
update_lastlog (const char *pty, const char *host)
{
# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
  struct lastlogx llx;
# endif
# ifdef HAVE_STRUCT_LASTLOG
  int             fd;
  struct lastlog  ll;
  char            lastlogfile[256];
  struct passwd  *pwent;
  struct stat     st;
# endif

# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
  memset (&llx, 0, sizeof (llx));
  llx.ll_tv.tv_sec = time (NULL);
  llx.ll_tv.tv_usec = 0;
  strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
  strncpy (llx.ll_host, host, sizeof (llx.ll_host));
  updlastlogx (LASTLOGX_FILE, getuid (), &llx);
# endif

# ifdef HAVE_STRUCT_LASTLOG
  pwent = getpwuid (getuid ());
  if (!pwent)
    {
      ptytty_warn ("no entry in password file, not updating lastlog.\n", 0);
      return;
    }

  memset (&ll, 0, sizeof (ll));
  ll.ll_time = time (NULL);
  strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
  strncpy (ll.ll_host, host, sizeof (ll.ll_host));
  if (stat (LASTLOG_FILE, &st) != 0)
    return;
  if (S_ISDIR (st.st_mode))
    {
      snprintf (lastlogfile, sizeof (lastlogfile), "%s/%s", LASTLOG_FILE,
               (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
               : pwent->pw_name);
      if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
        {
          write (fd, &ll, sizeof (ll));
          close (fd);
        }
    }
  else if (S_ISREG (st.st_mode))
    if ((fd = open (LASTLOG_FILE, O_RDWR)) != -1)
      {
        if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
                   SEEK_SET) != -1)
          write (fd, &ll, sizeof (ll));
        close (fd);
      }
# endif /* HAVE_STRUCT_LASTLOG */
}
#endif /* LASTLOG_SUPPORT */

#ifdef HAVE_STRUCT_UTMP
static void
fill_utmp (struct utmp *ut, bool login, int pid, const char *id, const char *line, const char *user, const char *host)
{
  memset (ut, 0, sizeof (struct utmp));

# ifdef HAVE_UTMP_PID
  strncpy (ut->ut_id, id, sizeof (ut->ut_id));
  ut->ut_pid = pid;
  ut->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
# endif
  ut->ut_time = time (NULL);

  if (login)
    {
      strncpy (ut->ut_line, line, sizeof (ut->ut_line));
# ifdef HAVE_UTMP_PID
      strncpy (ut->ut_user, user, sizeof (ut->ut_user));
# else
      strncpy (ut->ut_name, user, sizeof (ut->ut_name));
# endif
# ifdef HAVE_UTMP_HOST
      strncpy (ut->ut_host, host, sizeof (ut->ut_host));
# endif
    }
}
#endif

#ifdef HAVE_STRUCT_UTMPX
static void
fill_utmpx (struct utmpx *utx, bool login, int pid, const char *id, const char *line, const char *user, const char *host)
{
  memset (utx, 0, sizeof (struct utmpx));

  strncpy (utx->ut_id, id, sizeof (utx->ut_id));
  utx->ut_pid = pid;
  utx->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
  utx->ut_tv.tv_sec = time (NULL);
  utx->ut_tv.tv_usec = 0;
# if HAVE_UTMPX_SESSION
  utx->ut_session = getsid (0);
# endif

  if (login)
    {
      strncpy (utx->ut_line, line, sizeof (utx->ut_line));
      strncpy (utx->ut_user, user, sizeof (utx->ut_user));
# ifdef HAVE_UTMPX_HOST
      strncpy (utx->ut_host, host, sizeof (utx->ut_host));
# endif
    }
}
#endif

/* ------------------------------------------------------------------------- */

/*
 * make and write utmp and wtmp entries
 */
void
ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
{
  const char *pty = name;

  if (!pty || !*pty)
    return;

  this->cmd_pid     = cmd_pid;
  this->login_shell = login_shell;

#ifdef HAVE_STRUCT_UTMP
  struct utmp *ut = &this->ut;
#endif
#ifdef HAVE_STRUCT_UTMPX
  struct utmpx *utx = &this->utx;
#endif
  int i;
  struct passwd *pwent = getpwuid (getuid ());
  const char *user = (pwent && pwent->pw_name) ? pwent->pw_name : "?";

  if (!strncmp (pty, "/dev/", 5))
    pty += 5;           /* skip /dev/ prefix */

#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX)
  if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3))
    strncpy (ut_id, pty + 3, sizeof (ut_id));
  else if (sscanf (pty, "pts/%d", &i) == 1)
    sprintf (ut_id, "vt%02x", (i & 0xff));      /* sysv naming */
  else
    {
      ptytty_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty);
      return;
    }
#endif

#ifdef HAVE_STRUCT_UTMP
  fill_utmp (ut, true, cmd_pid, ut_id, pty, user, hostname);
#endif

#ifdef HAVE_STRUCT_UTMPX
  fill_utmpx (utx, true, cmd_pid, ut_id, pty, user, hostname);
#endif

#ifdef HAVE_STRUCT_UTMP
# ifdef HAVE_UTMP_PID
  setutent ();
  pututline (ut);
  endutent ();                  /* close the file */
# else
  int fd_stdin = dup (STDIN_FILENO);
  dup2 (tty, STDIN_FILENO);

  utmp_pos = ttyslot ();
  if (!write_bsd_utmp (utmp_pos, ut))
    utmp_pos = 0;

  dup2 (fd_stdin, STDIN_FILENO);
  close (fd_stdin);
# endif
#endif

#ifdef HAVE_STRUCT_UTMPX
  setutxent ();
  pututxline (utx);
  endutxent ();         /* close the file */
#endif

#ifdef WTMP_SUPPORT
#ifdef LOG_ONLY_ON_LOGIN
  if (login_shell)
#endif
    {
# ifdef HAVE_STRUCT_UTMP
#  ifdef HAVE_UPDWTMP
      updwtmp (WTMP_FILE, ut);
#  else
      update_wtmp (WTMP_FILE, ut);
#  endif
# endif
# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
      updwtmpx (WTMPX_FILE, utx);
# endif
    }
#endif
#ifdef LASTLOG_SUPPORT
#ifdef LOG_ONLY_ON_LOGIN
  if (login_shell)
#endif
    update_lastlog (pty, hostname);
#endif
}

/* ------------------------------------------------------------------------- */
/*
 * remove utmp and wtmp entries
 */
void
ptytty_unix::logout ()
{
  if (!cmd_pid)
    return;

#ifdef HAVE_STRUCT_UTMP
  struct utmp *tmput, *ut = &this->ut;
#endif
#ifdef HAVE_STRUCT_UTMPX
  struct utmpx *tmputx, *utx = &this->utx;
#endif

#ifdef HAVE_STRUCT_UTMP
  fill_utmp (ut, false, cmd_pid, ut_id, 0, 0, 0);
#endif

#ifdef HAVE_STRUCT_UTMPX
  fill_utmpx (utx, false, cmd_pid, ut_id, 0, 0, 0);
#endif

  /*
   * Write ending wtmp entry
   */
#ifdef WTMP_SUPPORT
#ifdef LOG_ONLY_ON_LOGIN
  if (login_shell)
#endif
    {
# ifdef HAVE_STRUCT_UTMP
#  ifdef HAVE_UPDWTMP
      updwtmp (WTMP_FILE, ut);
#  else
      update_wtmp (WTMP_FILE, ut);
#  endif
# endif
# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
      updwtmpx (WTMPX_FILE, utx);
# endif
    }
#endif

  /*
   * Write utmp entry
   */
#ifdef HAVE_STRUCT_UTMP
# ifdef HAVE_UTMP_PID
  setutent ();
  tmput = getutid (ut);         /* position to entry in utmp file */
  if (tmput && tmput->ut_pid == cmd_pid)
    pututline (ut);
  endutent ();
# else
  write_bsd_utmp (utmp_pos, ut);
# endif
#endif
#ifdef HAVE_STRUCT_UTMPX
  setutxent ();
  tmputx = getutxid (utx);              /* position to entry in utmp file */
  if (tmputx && tmputx->ut_pid == cmd_pid)
    pututxline (utx);
  endutxent ();
#endif

  cmd_pid = 0;
}

#else
void
ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
{
}
#endif

Revision:	1.39
Committed:	Wed May 18 08:48:12 2011 UTC (15 years, 4 months ago) by sf-exg
Content type:	text/plain
Branch:	MAIN
Changes since 1.38:	+3 -3 lines
Log Message:	Rename variable.
#	Content
1	// This file is part of libptytty. Do not make local modifications.
2	// http://software.schmorp.de/pkg/libptytty
3
4	/----------------------------------------------------------------------
5	* File: logging.C
6	----------------------------------------------------------------------
7	*
8	* All portions of code are copyright by their respective author/s.
9	* Copyright (c) 1992 John Bovey <jdb@ukc.ac.uk>
10	* - original version
11	* Copyright (c) 1993 lipka
12	* Copyright (c) 1993 Brian Stempien <stempien@cs.wmich.edu>
13	* Copyright (c) 1995 Raul Garcia Garcia <rgg@tid.es>
14	* Copyright (c) 1995 Piet W. Plomp <piet@idefix.icce.rug.nl>
15	* Copyright (c) 1997 Raul Garcia Garcia <rgg@tid.es>
16	* Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com>
17	* - extensive modifications
18	* Copyright (c) 1999 D J Hawkey Jr <hawkeyd@visi.com>
19	* - lastlog support
20	* Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
21	* Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it>
22	*
23	* This program is free software; you can redistribute it and/or modify
24	* it under the terms of the GNU General Public License as published by
25	* the Free Software Foundation; either version 2 of the License, or
26	* (at your option) any later version.
27	*
28	* This program is distributed in the hope that it will be useful,
29	* but WITHOUT ANY WARRANTY; without even the implied warranty of
30	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31	* GNU General Public License for more details.
32	*
33	* You should have received a copy of the GNU General Public License
34	* along with this program; if not, write to the Free Software
35	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
36	----------------------------------------------------------------------/
37
38	#include "config.h"
39
40	#include "ptytty.h"
41
42	#if UTMP_SUPPORT
43
44	#include <cstdio>
45	#include <cstring>
46
47	#include <sys/types.h>
48	#include <sys/stat.h>
49	#include <fcntl.h>
50	#include <unistd.h>
51	#include <time.h>
52	#include <errno.h>
53
54	/*
55	* BSD style utmp entry
56	* ut_line, ut_name, ut_host, ut_time
57	* SYSV style utmp (and utmpx) entry
58	* ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time
59	*/
60
61	/* ------------------------------------------------------------------------- */
62	/*
63	* Write a BSD style utmp entry
64	*/
65	#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
66	static int
67	write_bsd_utmp (int utmp_pos, struct utmp *wu)
68	{
69	int fd;
70
71	if (utmp_pos <= 0 \|\| (fd = open (UTMP_FILE, O_WRONLY)) == -1)
72	return 0;
73
74	if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
75	write (fd, wu, sizeof (struct utmp));
76	close (fd);
77	return 1;
78	}
79	#endif
80
81	/* ------------------------------------------------------------------------- */
82	/*
83	* Update a BSD style wtmp entry
84	*/
85	#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
86	static void
87	update_wtmp (const char fname, const struct utmp putmp)
88	{
89	int fd, gotlock, retry;
90	struct flock lck; /* fcntl locking scheme */
91	struct stat sbuf;
92
93	if ((fd = open (fname, O_WRONLY \| O_APPEND, 0)) < 0)
94	return;
95
96	lck.l_whence = SEEK_END; /* start lock at current eof */
97	lck.l_len = 0; /* end at ``largest possible eof'' */
98	lck.l_start = 0;
99	lck.l_type = F_WRLCK; /* we want a write lock */
100
101	/* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
102	for (retry = 10, gotlock = 0; retry--;)
103	if (fcntl (fd, F_SETLK, &lck) != -1)
104	{
105	gotlock = 1;
106	break;
107	}
108	else if (errno != EAGAIN && errno != EACCES)
109	break;
110	if (!gotlock)
111	{
112	/* give it up */
113	close (fd);
114	return;
115	}
116	if (fstat (fd, &sbuf) == 0)
117	if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
118	ftruncate (fd, sbuf.st_size); /* remove bad writes */
119
120	lck.l_type = F_UNLCK; /* unlocking the file */
121	fcntl (fd, F_SETLK, &lck);
122	close (fd);
123	}
124	#endif
125
126	/* ------------------------------------------------------------------------- */
127	#ifdef LASTLOG_SUPPORT
128	static void
129	update_lastlog (const char pty, const char host)
130	{
131	# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
132	struct lastlogx llx;
133	# endif
134	# ifdef HAVE_STRUCT_LASTLOG
135	int fd;
136	struct lastlog ll;
137	char lastlogfile[256];
138	struct passwd *pwent;
139	struct stat st;
140	# endif
141
142	# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
143	memset (&llx, 0, sizeof (llx));
144	llx.ll_tv.tv_sec = time (NULL);
145	llx.ll_tv.tv_usec = 0;
146	strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
147	strncpy (llx.ll_host, host, sizeof (llx.ll_host));
148	updlastlogx (LASTLOGX_FILE, getuid (), &llx);
149	# endif
150
151	# ifdef HAVE_STRUCT_LASTLOG
152	pwent = getpwuid (getuid ());
153	if (!pwent)
154	{
155	ptytty_warn ("no entry in password file, not updating lastlog.\n", 0);
156	return;
157	}
158
159	memset (&ll, 0, sizeof (ll));
160	ll.ll_time = time (NULL);
161	strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
162	strncpy (ll.ll_host, host, sizeof (ll.ll_host));
163	if (stat (LASTLOG_FILE, &st) != 0)
164	return;
165	if (S_ISDIR (st.st_mode))
166	{
167	snprintf (lastlogfile, sizeof (lastlogfile), "%s/%s", LASTLOG_FILE,
168	(!pwent->pw_name \|\| pwent->pw_name[0] == '\0') ? "unknown"
169	: pwent->pw_name);
170	if ((fd = open (lastlogfile, O_WRONLY \| O_CREAT, 0644)) >= 0)
171	{
172	write (fd, &ll, sizeof (ll));
173	close (fd);
174	}
175	}
176	else if (S_ISREG (st.st_mode))
177	if ((fd = open (LASTLOG_FILE, O_RDWR)) != -1)
178	{
179	if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
180	SEEK_SET) != -1)
181	write (fd, &ll, sizeof (ll));
182	close (fd);
183	}
184	# endif /* HAVE_STRUCT_LASTLOG */
185	}
186	#endif /* LASTLOG_SUPPORT */
187
188	#ifdef HAVE_STRUCT_UTMP
189	static void
190	fill_utmp (struct utmp ut, bool login, int pid, const char id, const char line, const char user, const char *host)
191	{
192	memset (ut, 0, sizeof (struct utmp));
193
194	# ifdef HAVE_UTMP_PID
195	strncpy (ut->ut_id, id, sizeof (ut->ut_id));
196	ut->ut_pid = pid;
197	ut->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
198	# endif
199	ut->ut_time = time (NULL);
200
201	if (login)
202	{
203	strncpy (ut->ut_line, line, sizeof (ut->ut_line));
204	# ifdef HAVE_UTMP_PID
205	strncpy (ut->ut_user, user, sizeof (ut->ut_user));
206	# else
207	strncpy (ut->ut_name, user, sizeof (ut->ut_name));
208	# endif
209	# ifdef HAVE_UTMP_HOST
210	strncpy (ut->ut_host, host, sizeof (ut->ut_host));
211	# endif
212	}
213	}
214	#endif
215
216	#ifdef HAVE_STRUCT_UTMPX
217	static void
218	fill_utmpx (struct utmpx utx, bool login, int pid, const char id, const char line, const char user, const char *host)
219	{
220	memset (utx, 0, sizeof (struct utmpx));
221
222	strncpy (utx->ut_id, id, sizeof (utx->ut_id));
223	utx->ut_pid = pid;
224	utx->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
225	utx->ut_tv.tv_sec = time (NULL);
226	utx->ut_tv.tv_usec = 0;
227	# if HAVE_UTMPX_SESSION
228	utx->ut_session = getsid (0);
229	# endif
230
231	if (login)
232	{
233	strncpy (utx->ut_line, line, sizeof (utx->ut_line));
234	strncpy (utx->ut_user, user, sizeof (utx->ut_user));
235	# ifdef HAVE_UTMPX_HOST
236	strncpy (utx->ut_host, host, sizeof (utx->ut_host));
237	# endif
238	}
239	}
240	#endif
241
242	/* ------------------------------------------------------------------------- */
243
244	/*
245	* make and write utmp and wtmp entries
246	*/
247	void
248	ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
249	{
250	const char *pty = name;
251
252	if (!pty \|\| !*pty)
253	return;
254
255	this->cmd_pid = cmd_pid;
256	this->login_shell = login_shell;
257
258	#ifdef HAVE_STRUCT_UTMP
259	struct utmp *ut = &this->ut;
260	#endif
261	#ifdef HAVE_STRUCT_UTMPX
262	struct utmpx *utx = &this->utx;
263	#endif
264	int i;
265	struct passwd *pwent = getpwuid (getuid ());
266	const char *user = (pwent && pwent->pw_name) ? pwent->pw_name : "?";
267
268	if (!strncmp (pty, "/dev/", 5))
269	pty += 5; /* skip /dev/ prefix */
270
271	#if defined(HAVE_UTMP_PID) \|\| defined(HAVE_STRUCT_UTMPX)
272	if (!strncmp (pty, "pty", 3) \|\| !strncmp (pty, "tty", 3))
273	strncpy (ut_id, pty + 3, sizeof (ut_id));
274	else if (sscanf (pty, "pts/%d", &i) == 1)
275	sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */
276	else
277	{
278	ptytty_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty);
279	return;
280	}
281	#endif
282
283	#ifdef HAVE_STRUCT_UTMP
284	fill_utmp (ut, true, cmd_pid, ut_id, pty, user, hostname);
285	#endif
286
287	#ifdef HAVE_STRUCT_UTMPX
288	fill_utmpx (utx, true, cmd_pid, ut_id, pty, user, hostname);
289	#endif
290
291	#ifdef HAVE_STRUCT_UTMP
292	# ifdef HAVE_UTMP_PID
293	setutent ();
294	pututline (ut);
295	endutent (); /* close the file */
296	# else
297	int fd_stdin = dup (STDIN_FILENO);
298	dup2 (tty, STDIN_FILENO);
299
300	utmp_pos = ttyslot ();
301	if (!write_bsd_utmp (utmp_pos, ut))
302	utmp_pos = 0;
303
304	dup2 (fd_stdin, STDIN_FILENO);
305	close (fd_stdin);
306	# endif
307	#endif
308
309	#ifdef HAVE_STRUCT_UTMPX
310	setutxent ();
311	pututxline (utx);
312	endutxent (); /* close the file */
313	#endif
314
315	#ifdef WTMP_SUPPORT
316	#ifdef LOG_ONLY_ON_LOGIN
317	if (login_shell)
318	#endif
319	{
320	# ifdef HAVE_STRUCT_UTMP
321	# ifdef HAVE_UPDWTMP
322	updwtmp (WTMP_FILE, ut);
323	# else
324	update_wtmp (WTMP_FILE, ut);
325	# endif
326	# endif
327	# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
328	updwtmpx (WTMPX_FILE, utx);
329	# endif
330	}
331	#endif
332	#ifdef LASTLOG_SUPPORT
333	#ifdef LOG_ONLY_ON_LOGIN
334	if (login_shell)
335	#endif
336	update_lastlog (pty, hostname);
337	#endif
338	}
339
340	/* ------------------------------------------------------------------------- */
341	/*
342	* remove utmp and wtmp entries
343	*/
344	void
345	ptytty_unix::logout ()
346	{
347	if (!cmd_pid)
348	return;
349
350	#ifdef HAVE_STRUCT_UTMP
351	struct utmp tmput, ut = &this->ut;
352	#endif
353	#ifdef HAVE_STRUCT_UTMPX
354	struct utmpx tmputx, utx = &this->utx;
355	#endif
356
357	#ifdef HAVE_STRUCT_UTMP
358	fill_utmp (ut, false, cmd_pid, ut_id, 0, 0, 0);
359	#endif
360
361	#ifdef HAVE_STRUCT_UTMPX
362	fill_utmpx (utx, false, cmd_pid, ut_id, 0, 0, 0);
363	#endif
364
365	/*
366	* Write ending wtmp entry
367	*/
368	#ifdef WTMP_SUPPORT
369	#ifdef LOG_ONLY_ON_LOGIN
370	if (login_shell)
371	#endif
372	{
373	# ifdef HAVE_STRUCT_UTMP
374	# ifdef HAVE_UPDWTMP
375	updwtmp (WTMP_FILE, ut);
376	# else
377	update_wtmp (WTMP_FILE, ut);
378	# endif
379	# endif
380	# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
381	updwtmpx (WTMPX_FILE, utx);
382	# endif
383	}
384	#endif
385
386	/*
387	* Write utmp entry
388	*/
389	#ifdef HAVE_STRUCT_UTMP
390	# ifdef HAVE_UTMP_PID
391	setutent ();
392	tmput = getutid (ut); /* position to entry in utmp file */
393	if (tmput && tmput->ut_pid == cmd_pid)
394	pututline (ut);
395	endutent ();
396	# else
397	write_bsd_utmp (utmp_pos, ut);
398	# endif
399	#endif
400	#ifdef HAVE_STRUCT_UTMPX
401	setutxent ();
402	tmputx = getutxid (utx); /* position to entry in utmp file */
403	if (tmputx && tmputx->ut_pid == cmd_pid)
404	pututxline (utx);
405	endutxent ();
406	#endif
407
408	cmd_pid = 0;
409	}
410
411	#else
412	void
413	ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
414	{
415	}
416	#endif
417