libptytty/src/logging.C

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

#ifdef HAVE_UTMPX_H
# include <utmpx.h>
#endif
#ifdef HAVE_UTMP_H
# include <utmp.h>
#endif
#ifdef HAVE_LASTLOG_H
# include <lastlog.h>
#endif

#if !defined(UTMP_FILE)
# if defined(_PATH_UTMP)
#  define UTMP_FILE _PATH_UTMP
# elif defined(PT_UTMP_FILE)
#  define UTMP_FILE PT_UTMP_FILE
# endif
#endif
#if !defined(WTMP_FILE)
# if defined(_PATH_WTMP)
#  define WTMP_FILE _PATH_WTMP
# elif defined(PT_WTMP_FILE)
#  define WTMP_FILE PT_WTMP_FILE
# endif
#endif
#if !defined(WTMPX_FILE)
# if defined(_PATH_WTMPX)
#  define WTMPX_FILE _PATH_WTMPX
# elif defined(PT_WTMPX_FILE)
#  define WTMPX_FILE PT_WTMPX_FILE
# endif
#endif
#if !defined(LASTLOG_FILE)
# if defined(_PATH_LASTLOG)
#  define LASTLOG_FILE _PATH_LASTLOG
# elif defined(PT_LASTLOG_FILE)
#  define LASTLOG_FILE PT_LASTLOG_FILE
# endif
#endif
#if !defined(LASTLOGX_FILE)
# if defined(_PATH_LASTLOGX)
#  define LASTLOGX_FILE _PATH_LASTLOGX
# elif defined(PT_LASTLOGX_FILE)
#  define LASTLOGX_FILE PT_LASTLOGX_FILE
# endif
#endif

#include <pwd.h>

#include <stdio.h>
#include <string.h>

#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 void
write_bsd_utmp (int utmp_pos, struct utmp *ut)
{
  int             fd;

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

  if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
    write (fd, ut, sizeof (struct utmp));
  close (fd);
}
#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 *ut)
{
  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)
    {
      if (fstat (fd, &sbuf) == 0)
        if (write (fd, ut, 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;
# 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
  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 ((fd = open (LASTLOG_FILE, O_RDWR)) != -1)
    {
      if (lseek (fd, (off_t) (getuid () * sizeof (ll)),
                 SEEK_SET) != -1)
        write (fd, &ll, sizeof (ll));
      close (fd);
    }
# endif /* HAVE_STRUCT_LASTLOG */
}
#endif /* LASTLOG_SUPPORT */

#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX)
static void
fill_id (char *id, const char *line, size_t id_size)
{
  size_t len = strlen (line);

  if (len > id_size)
    line += len - id_size;
  strncpy (id, line, id_size);
}
#endif

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

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

  if (login)
    {
# 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 *line, const char *user, const char *host)
{
  memset (utx, 0, sizeof (struct utmpx));

  // posix says that ut_line is not meaningful for DEAD_PROCESS
  // records, but most implementations of last use ut_line to
  // associate records in wtmp file
  strncpy (utx->ut_line, line, sizeof (utx->ut_line));
  fill_id (utx->ut_id, line, 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;

  // posix says that ut_user is not meaningful for DEAD_PROCESS
  // records, but solaris utmp_update helper requires that the ut_user
  // field of a DEAD_PROCESS entry matches the one of an existing
  // USER_PROCESS entry for the same line, if any
  strncpy (utx->ut_user, user, sizeof (utx->ut_user));

  if (login)
    {
# 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)
{
  if (!name || !*name)
    return;

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

  log_session (true, hostname);
}

void
ptytty_unix::log_session (bool login, const char *hostname)
{
  struct passwd *pwent = getpwuid (getuid ());
  const char *user = (pwent && pwent->pw_name) ? pwent->pw_name : "?";

  const char *pty = name;

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

#ifdef HAVE_STRUCT_UTMP
  struct utmp *tmput;
  struct utmp ut;
  fill_utmp (&ut, login, cmd_pid, pty, user, hostname);
#endif

#ifdef HAVE_STRUCT_UTMPX
  struct utmpx *tmputx;
  struct utmpx utx;
  fill_utmpx (&utx, login, cmd_pid, pty, user, hostname);
#endif

#ifdef HAVE_STRUCT_UTMP
# ifdef HAVE_UTMP_PID
  setutent ();
  if (login || ((tmput = getutid (&ut)) && tmput->ut_pid == cmd_pid))
    pututline (&ut);
  endutent ();
# else
  write_bsd_utmp (utmp_pos, &ut);
# endif
#endif

#ifdef HAVE_STRUCT_UTMPX
  setutxent ();
  if (login || ((tmputx = getutxid (&utx)) && tmputx->ut_pid == cmd_pid))
    pututxline (&utx);
  endutxent ();
#endif

#ifdef WTMP_SUPPORT
  if (login_shell)
    {
# 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
  if (login_shell)
    if (login)
      {
        if (pwent)
          update_lastlog (pty, hostname);
        else
          PTYTTY_WARN ("no entry in password file, not updating lastlog.\n");
      }
#endif
}

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

  log_session (false, 0);

  cmd_pid = 0;
}

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

Revision:	1.68
Committed:	Mon Aug 25 13:33:46 2014 UTC (12 years, 1 month ago) by sf-exg
Content type:	text/plain
Branch:	MAIN
Changes since 1.67:	+1 -1 lines
Log Message:	Revert last change.
#	Content
1	/----------------------------------------------------------------------
2	* File: logging.C
3	----------------------------------------------------------------------
4	*
5	* All portions of code are copyright by their respective author/s.
6	* Copyright (c) 1992 John Bovey <jdb@ukc.ac.uk>
7	* - original version
8	* Copyright (c) 1993 lipka
9	* Copyright (c) 1993 Brian Stempien <stempien@cs.wmich.edu>
10	* Copyright (c) 1995 Raul Garcia Garcia <rgg@tid.es>
11	* Copyright (c) 1995 Piet W. Plomp <piet@idefix.icce.rug.nl>
12	* Copyright (c) 1997 Raul Garcia Garcia <rgg@tid.es>
13	* Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com>
14	* - extensive modifications
15	* Copyright (c) 1999 D J Hawkey Jr <hawkeyd@visi.com>
16	* - lastlog support
17	* Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
18	* Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it>
19	*
20	* This program is free software; you can redistribute it and/or modify
21	* it under the terms of the GNU General Public License as published by
22	* the Free Software Foundation; either version 2 of the License, or
23	* (at your option) any later version.
24	*
25	* This program is distributed in the hope that it will be useful,
26	* but WITHOUT ANY WARRANTY; without even the implied warranty of
27	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28	* GNU General Public License for more details.
29	*
30	* You should have received a copy of the GNU General Public License
31	* along with this program; if not, write to the Free Software
32	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33	----------------------------------------------------------------------/
34
35	#include "config.h"
36
37	#include "ptytty.h"
38
39	#if UTMP_SUPPORT
40
41	#ifdef HAVE_UTMPX_H
42	# include <utmpx.h>
43	#endif
44	#ifdef HAVE_UTMP_H
45	# include <utmp.h>
46	#endif
47	#ifdef HAVE_LASTLOG_H
48	# include <lastlog.h>
49	#endif
50
51	#if !defined(UTMP_FILE)
52	# if defined(_PATH_UTMP)
53	# define UTMP_FILE _PATH_UTMP
54	# elif defined(PT_UTMP_FILE)
55	# define UTMP_FILE PT_UTMP_FILE
56	# endif
57	#endif
58	#if !defined(WTMP_FILE)
59	# if defined(_PATH_WTMP)
60	# define WTMP_FILE _PATH_WTMP
61	# elif defined(PT_WTMP_FILE)
62	# define WTMP_FILE PT_WTMP_FILE
63	# endif
64	#endif
65	#if !defined(WTMPX_FILE)
66	# if defined(_PATH_WTMPX)
67	# define WTMPX_FILE _PATH_WTMPX
68	# elif defined(PT_WTMPX_FILE)
69	# define WTMPX_FILE PT_WTMPX_FILE
70	# endif
71	#endif
72	#if !defined(LASTLOG_FILE)
73	# if defined(_PATH_LASTLOG)
74	# define LASTLOG_FILE _PATH_LASTLOG
75	# elif defined(PT_LASTLOG_FILE)
76	# define LASTLOG_FILE PT_LASTLOG_FILE
77	# endif
78	#endif
79	#if !defined(LASTLOGX_FILE)
80	# if defined(_PATH_LASTLOGX)
81	# define LASTLOGX_FILE _PATH_LASTLOGX
82	# elif defined(PT_LASTLOGX_FILE)
83	# define LASTLOGX_FILE PT_LASTLOGX_FILE
84	# endif
85	#endif
86
87	#include <pwd.h>
88
89	#include <stdio.h>
90	#include <string.h>
91
92	#include <sys/types.h>
93	#include <sys/stat.h>
94	#include <fcntl.h>
95	#include <unistd.h>
96	#include <time.h>
97	#include <errno.h>
98
99	/*
100	* BSD style utmp entry
101	* ut_line, ut_name, ut_host, ut_time
102	* SYSV style utmp (and utmpx) entry
103	* ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time
104	*/
105
106	/* ------------------------------------------------------------------------- */
107	/*
108	* Write a BSD style utmp entry
109	*/
110	#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
111	static void
112	write_bsd_utmp (int utmp_pos, struct utmp *ut)
113	{
114	int fd;
115
116	if (utmp_pos <= 0 \|\| (fd = open (UTMP_FILE, O_WRONLY)) == -1)
117	return;
118
119	if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
120	write (fd, ut, sizeof (struct utmp));
121	close (fd);
122	}
123	#endif
124
125	/* ------------------------------------------------------------------------- */
126	/*
127	* Update a BSD style wtmp entry
128	*/
129	#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
130	static void
131	update_wtmp (const char fname, const struct utmp ut)
132	{
133	int fd, gotlock, retry;
134	struct flock lck; /* fcntl locking scheme */
135	struct stat sbuf;
136
137	if ((fd = open (fname, O_WRONLY \| O_APPEND, 0)) < 0)
138	return;
139
140	lck.l_whence = SEEK_END; /* start lock at current eof */
141	lck.l_len = 0; /* end at ``largest possible eof'' */
142	lck.l_start = 0;
143	lck.l_type = F_WRLCK; /* we want a write lock */
144
145	/* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
146	for (retry = 10, gotlock = 0; retry--;)
147	if (fcntl (fd, F_SETLK, &lck) != -1)
148	{
149	gotlock = 1;
150	break;
151	}
152	else if (errno != EAGAIN && errno != EACCES)
153	break;
154
155	if (gotlock)
156	{
157	if (fstat (fd, &sbuf) == 0)
158	if (write (fd, ut, sizeof (struct utmp)) != sizeof (struct utmp))
159	ftruncate (fd, sbuf.st_size); /* remove bad writes */
160
161	lck.l_type = F_UNLCK; /* unlocking the file */
162	fcntl (fd, F_SETLK, &lck);
163	}
164
165	close (fd);
166	}
167	#endif
168
169	/* ------------------------------------------------------------------------- */
170	#ifdef LASTLOG_SUPPORT
171	static void
172	update_lastlog (const char pty, const char host)
173	{
174	# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
175	struct lastlogx llx;
176	# endif
177	# ifdef HAVE_STRUCT_LASTLOG
178	int fd;
179	struct lastlog ll;
180	# endif
181
182	# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
183	memset (&llx, 0, sizeof (llx));
184	llx.ll_tv.tv_sec = time (NULL);
185	llx.ll_tv.tv_usec = 0;
186	strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
187	strncpy (llx.ll_host, host, sizeof (llx.ll_host));
188	updlastlogx (LASTLOGX_FILE, getuid (), &llx);
189	# endif
190
191	# ifdef HAVE_STRUCT_LASTLOG
192	memset (&ll, 0, sizeof (ll));
193	ll.ll_time = time (NULL);
194	strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
195	strncpy (ll.ll_host, host, sizeof (ll.ll_host));
196	if ((fd = open (LASTLOG_FILE, O_RDWR)) != -1)
197	{
198	if (lseek (fd, (off_t) (getuid () * sizeof (ll)),
199	SEEK_SET) != -1)
200	write (fd, &ll, sizeof (ll));
201	close (fd);
202	}
203	# endif /* HAVE_STRUCT_LASTLOG */
204	}
205	#endif /* LASTLOG_SUPPORT */
206
207	#if defined(HAVE_UTMP_PID) \|\| defined(HAVE_STRUCT_UTMPX)
208	static void
209	fill_id (char id, const char line, size_t id_size)
210	{
211	size_t len = strlen (line);
212
213	if (len > id_size)
214	line += len - id_size;
215	strncpy (id, line, id_size);
216	}
217	#endif
218
219	#ifdef HAVE_STRUCT_UTMP
220	static void
221	fill_utmp (struct utmp ut, bool login, int pid, const char line, const char user, const char host)
222	{
223	memset (ut, 0, sizeof (struct utmp));
224
225	strncpy (ut->ut_line, line, sizeof (ut->ut_line));
226	# ifdef HAVE_UTMP_PID
227	fill_id (ut->ut_id, line, sizeof (ut->ut_id));
228	ut->ut_pid = pid;
229	ut->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
230	# endif
231	ut->ut_time = time (NULL);
232
233	if (login)
234	{
235	# ifdef HAVE_UTMP_PID
236	strncpy (ut->ut_user, user, sizeof (ut->ut_user));
237	# else
238	strncpy (ut->ut_name, user, sizeof (ut->ut_name));
239	# endif
240	# ifdef HAVE_UTMP_HOST
241	strncpy (ut->ut_host, host, sizeof (ut->ut_host));
242	# endif
243	}
244	}
245	#endif
246
247	#ifdef HAVE_STRUCT_UTMPX
248	static void
249	fill_utmpx (struct utmpx utx, bool login, int pid, const char line, const char user, const char host)
250	{
251	memset (utx, 0, sizeof (struct utmpx));
252
253	// posix says that ut_line is not meaningful for DEAD_PROCESS
254	// records, but most implementations of last use ut_line to
255	// associate records in wtmp file
256	strncpy (utx->ut_line, line, sizeof (utx->ut_line));
257	fill_id (utx->ut_id, line, sizeof (utx->ut_id));
258	utx->ut_pid = pid;
259	utx->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
260	utx->ut_tv.tv_sec = time (NULL);
261	utx->ut_tv.tv_usec = 0;
262
263	// posix says that ut_user is not meaningful for DEAD_PROCESS
264	// records, but solaris utmp_update helper requires that the ut_user
265	// field of a DEAD_PROCESS entry matches the one of an existing
266	// USER_PROCESS entry for the same line, if any
267	strncpy (utx->ut_user, user, sizeof (utx->ut_user));
268
269	if (login)
270	{
271	# ifdef HAVE_UTMPX_HOST
272	strncpy (utx->ut_host, host, sizeof (utx->ut_host));
273	# endif
274	}
275	}
276	#endif
277
278	/* ------------------------------------------------------------------------- */
279
280	/*
281	* make and write utmp and wtmp entries
282	*/
283	void
284	ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
285	{
286	if (!name \|\| !*name)
287	return;
288
289	this->cmd_pid = cmd_pid;
290	this->login_shell = login_shell;
291
292	log_session (true, hostname);
293	}
294
295	void
296	ptytty_unix::log_session (bool login, const char *hostname)
297	{
298	struct passwd *pwent = getpwuid (getuid ());
299	const char *user = (pwent && pwent->pw_name) ? pwent->pw_name : "?";
300
301	const char *pty = name;
302
303	if (!strncmp (pty, "/dev/", 5))
304	pty += 5; /* skip /dev/ prefix */
305
306	#ifdef HAVE_STRUCT_UTMP
307	struct utmp *tmput;
308	struct utmp ut;
309	fill_utmp (&ut, login, cmd_pid, pty, user, hostname);
310	#endif
311
312	#ifdef HAVE_STRUCT_UTMPX
313	struct utmpx *tmputx;
314	struct utmpx utx;
315	fill_utmpx (&utx, login, cmd_pid, pty, user, hostname);
316	#endif
317
318	#ifdef HAVE_STRUCT_UTMP
319	# ifdef HAVE_UTMP_PID
320	setutent ();
321	if (login \|\| ((tmput = getutid (&ut)) && tmput->ut_pid == cmd_pid))
322	pututline (&ut);
323	endutent ();
324	# else
325	write_bsd_utmp (utmp_pos, &ut);
326	# endif
327	#endif
328
329	#ifdef HAVE_STRUCT_UTMPX
330	setutxent ();
331	if (login \|\| ((tmputx = getutxid (&utx)) && tmputx->ut_pid == cmd_pid))
332	pututxline (&utx);
333	endutxent ();
334	#endif
335
336	#ifdef WTMP_SUPPORT
337	if (login_shell)
338	{
339	# ifdef HAVE_STRUCT_UTMP
340	# ifdef HAVE_UPDWTMP
341	updwtmp (WTMP_FILE, &ut);
342	# else
343	update_wtmp (WTMP_FILE, &ut);
344	# endif
345	# endif
346	# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
347	updwtmpx (WTMPX_FILE, &utx);
348	# endif
349	}
350	#endif
351
352	#ifdef LASTLOG_SUPPORT
353	if (login_shell)
354	if (login)
355	{
356	if (pwent)
357	update_lastlog (pty, hostname);
358	else
359	PTYTTY_WARN ("no entry in password file, not updating lastlog.\n");
360	}
361	#endif
362	}
363
364	/* ------------------------------------------------------------------------- */
365	/*
366	* remove utmp and wtmp entries
367	*/
368	void
369	ptytty_unix::logout ()
370	{
371	if (!cmd_pid)
372	return;
373
374	log_session (false, 0);
375
376	cmd_pid = 0;
377	}
378
379	#else
380	void
381	ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
382	{
383	}
384	#endif
385