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"

#include <sys/types.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/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
 */

static void
write_record (const char *path, off_t pos, const void *record, size_t size)
{
  int fd = open (path, O_WRONLY);
  if (fd >= 0)
    {
      pwrite (fd, record, size, pos * size);
      close (fd);
    }
}

/* ------------------------------------------------------------------------- */
/*
 * 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
  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));
  write_record (LASTLOG_FILE, getuid (), &ll, sizeof (ll));
# 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
  if (utmp_pos > 0)
    write_record (UTMP_FILE, utmp_pos, &ut, sizeof (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:	1.70
Committed:	Mon May 24 13:54:45 2021 UTC (5 years, 3 months ago) by sf-exg
Content type:	text/plain
Branch:	MAIN
Changes since 1.69:	+11 -25 lines
Log Message:	Factor code to write utmp and lastlog records
#	User	Rev	Content
1	root	1.6	/----------------------------------------------------------------------
2	root	1.1	* 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	sf-exg	1.30	* Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
18	root	1.9	* Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it>
19	root	1.1	*
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	sf-exg	1.68	* the Free Software Foundation; either version 2 of the License, or
23	root	1.1	* (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	sf-exg	1.26	#include "config.h"
36	root	1.4
37	root	1.10	#include "ptytty.h"
38
39	sf-exg	1.69	#include <sys/types.h>
40
41	root	1.10	#if UTMP_SUPPORT
42
43	sf-exg	1.56	#ifdef HAVE_UTMPX_H
44			# include <utmpx.h>
45			#endif
46			#ifdef HAVE_UTMP_H
47			# include <utmp.h>
48			#endif
49			#ifdef HAVE_LASTLOG_H
50			# include <lastlog.h>
51			#endif
52
53	sf-exg	1.58	#if !defined(UTMP_FILE)
54			# if defined(_PATH_UTMP)
55			# define UTMP_FILE _PATH_UTMP
56			# elif defined(PT_UTMP_FILE)
57			# define UTMP_FILE PT_UTMP_FILE
58			# endif
59			#endif
60			#if !defined(WTMP_FILE)
61			# if defined(_PATH_WTMP)
62			# define WTMP_FILE _PATH_WTMP
63			# elif defined(PT_WTMP_FILE)
64			# define WTMP_FILE PT_WTMP_FILE
65			# endif
66			#endif
67			#if !defined(WTMPX_FILE)
68			# if defined(_PATH_WTMPX)
69			# define WTMPX_FILE _PATH_WTMPX
70			# elif defined(PT_WTMPX_FILE)
71			# define WTMPX_FILE PT_WTMPX_FILE
72			# endif
73			#endif
74			#if !defined(LASTLOG_FILE)
75			# if defined(_PATH_LASTLOG)
76			# define LASTLOG_FILE _PATH_LASTLOG
77			# elif defined(PT_LASTLOG_FILE)
78			# define LASTLOG_FILE PT_LASTLOG_FILE
79			# endif
80			#endif
81			#if !defined(LASTLOGX_FILE)
82			# if defined(_PATH_LASTLOGX)
83			# define LASTLOGX_FILE _PATH_LASTLOGX
84			# elif defined(PT_LASTLOGX_FILE)
85			# define LASTLOGX_FILE PT_LASTLOGX_FILE
86			# endif
87			#endif
88
89	sf-exg	1.56	#include <pwd.h>
90
91	sf-exg	1.65	#include <stdio.h>
92	sf-exg	1.64	#include <string.h>
93	root	1.7
94			#include <sys/stat.h>
95	ayin	1.23	#include <fcntl.h>
96	root	1.7	#include <unistd.h>
97			#include <time.h>
98	ayin	1.24	#include <errno.h>
99	root	1.7
100	root	1.1	/*
101			* BSD style utmp entry
102			* ut_line, ut_name, ut_host, ut_time
103			* SYSV style utmp (and utmpx) entry
104			* ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time
105			*/
106
107	sf-exg	1.53	static void
108	sf-exg	1.70	write_record (const char path, off_t pos, const void record, size_t size)
109	ayin	1.12	{
110	sf-exg	1.70	int fd = open (path, O_WRONLY);
111			if (fd >= 0)
112			{
113			pwrite (fd, record, size, pos * size);
114			close (fd);
115			}
116	ayin	1.12	}
117
118			/* ------------------------------------------------------------------------- */
119			/*
120			* Update a BSD style wtmp entry
121			*/
122			#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
123			static void
124	sf-exg	1.43	update_wtmp (const char fname, const struct utmp ut)
125	ayin	1.12	{
126	sf-exg	1.29	int fd, gotlock, retry;
127	ayin	1.12	struct flock lck; /* fcntl locking scheme */
128			struct stat sbuf;
129
130			if ((fd = open (fname, O_WRONLY \| O_APPEND, 0)) < 0)
131			return;
132
133			lck.l_whence = SEEK_END; /* start lock at current eof */
134			lck.l_len = 0; /* end at ``largest possible eof'' */
135			lck.l_start = 0;
136			lck.l_type = F_WRLCK; /* we want a write lock */
137
138			/* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
139	sf-exg	1.29	for (retry = 10, gotlock = 0; retry--;)
140	ayin	1.12	if (fcntl (fd, F_SETLK, &lck) != -1)
141			{
142	sf-exg	1.29	gotlock = 1;
143	ayin	1.12	break;
144			}
145			else if (errno != EAGAIN && errno != EACCES)
146	sf-exg	1.29	break;
147	sf-exg	1.57
148			if (gotlock)
149	sf-exg	1.29	{
150	sf-exg	1.57	if (fstat (fd, &sbuf) == 0)
151			if (write (fd, ut, sizeof (struct utmp)) != sizeof (struct utmp))
152			ftruncate (fd, sbuf.st_size); /* remove bad writes */
153
154			lck.l_type = F_UNLCK; /* unlocking the file */
155			fcntl (fd, F_SETLK, &lck);
156	sf-exg	1.29	}
157	ayin	1.12
158			close (fd);
159			}
160			#endif
161
162			/* ------------------------------------------------------------------------- */
163			#ifdef LASTLOG_SUPPORT
164			static void
165	sf-exg	1.31	update_lastlog (const char pty, const char host)
166	ayin	1.12	{
167			# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
168			struct lastlogx llx;
169			# endif
170			# ifdef HAVE_STRUCT_LASTLOG
171	sf-exg	1.70	struct lastlog ll;
172	ayin	1.12	# endif
173
174			# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
175			memset (&llx, 0, sizeof (llx));
176			llx.ll_tv.tv_sec = time (NULL);
177			llx.ll_tv.tv_usec = 0;
178			strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
179			strncpy (llx.ll_host, host, sizeof (llx.ll_host));
180			updlastlogx (LASTLOGX_FILE, getuid (), &llx);
181			# endif
182
183			# ifdef HAVE_STRUCT_LASTLOG
184			memset (&ll, 0, sizeof (ll));
185			ll.ll_time = time (NULL);
186			strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
187			strncpy (ll.ll_host, host, sizeof (ll.ll_host));
188	sf-exg	1.70	write_record (LASTLOG_FILE, getuid (), &ll, sizeof (ll));
189	ayin	1.17	# endif /* HAVE_STRUCT_LASTLOG */
190	ayin	1.12	}
191	ayin	1.17	#endif /* LASTLOG_SUPPORT */
192	ayin	1.12
193	sf-exg	1.45	#if defined(HAVE_UTMP_PID) \|\| defined(HAVE_STRUCT_UTMPX)
194			static void
195			fill_id (char id, const char line, size_t id_size)
196			{
197			size_t len = strlen (line);
198
199			if (len > id_size)
200			line += len - id_size;
201			strncpy (id, line, id_size);
202			}
203			#endif
204
205	sf-exg	1.32	#ifdef HAVE_STRUCT_UTMP
206			static void
207	sf-exg	1.45	fill_utmp (struct utmp ut, bool login, int pid, const char line, const char user, const char host)
208	sf-exg	1.32	{
209			memset (ut, 0, sizeof (struct utmp));
210
211	sf-exg	1.40	strncpy (ut->ut_line, line, sizeof (ut->ut_line));
212	sf-exg	1.32	# ifdef HAVE_UTMP_PID
213	sf-exg	1.45	fill_id (ut->ut_id, line, sizeof (ut->ut_id));
214	sf-exg	1.32	ut->ut_pid = pid;
215	sf-exg	1.35	ut->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
216	sf-exg	1.32	# endif
217			ut->ut_time = time (NULL);
218
219			if (login)
220			{
221			# ifdef HAVE_UTMP_PID
222			strncpy (ut->ut_user, user, sizeof (ut->ut_user));
223			# else
224			strncpy (ut->ut_name, user, sizeof (ut->ut_name));
225			# endif
226			# ifdef HAVE_UTMP_HOST
227			strncpy (ut->ut_host, host, sizeof (ut->ut_host));
228			# endif
229			}
230			}
231			#endif
232
233			#ifdef HAVE_STRUCT_UTMPX
234			static void
235	sf-exg	1.45	fill_utmpx (struct utmpx utx, bool login, int pid, const char line, const char user, const char host)
236	sf-exg	1.32	{
237			memset (utx, 0, sizeof (struct utmpx));
238
239	sf-exg	1.40	// posix says that ut_line is not meaningful for DEAD_PROCESS
240	sf-exg	1.41	// records, but most implementations of last use ut_line to
241	sf-exg	1.40	// associate records in wtmp file
242			strncpy (utx->ut_line, line, sizeof (utx->ut_line));
243	sf-exg	1.45	fill_id (utx->ut_id, line, sizeof (utx->ut_id));
244	sf-exg	1.32	utx->ut_pid = pid;
245	sf-exg	1.35	utx->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
246	sf-exg	1.32	utx->ut_tv.tv_sec = time (NULL);
247			utx->ut_tv.tv_usec = 0;
248
249	sf-exg	1.54	// posix says that ut_user is not meaningful for DEAD_PROCESS
250			// records, but solaris utmp_update helper requires that the ut_user
251			// field of a DEAD_PROCESS entry matches the one of an existing
252			// USER_PROCESS entry for the same line, if any
253			strncpy (utx->ut_user, user, sizeof (utx->ut_user));
254
255	sf-exg	1.32	if (login)
256			{
257			# ifdef HAVE_UTMPX_HOST
258			strncpy (utx->ut_host, host, sizeof (utx->ut_host));
259			# endif
260			}
261			}
262			#endif
263
264	ayin	1.12	/* ------------------------------------------------------------------------- */
265	root	1.1
266			/*
267			* make and write utmp and wtmp entries
268			*/
269			void
270	root	1.3	ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
271	root	1.1	{
272	sf-exg	1.54	if (!name \|\| !*name)
273	root	1.2	return;
274
275			this->cmd_pid = cmd_pid;
276			this->login_shell = login_shell;
277
278	sf-exg	1.54	log_session (true, hostname);
279			}
280
281			void
282			ptytty_unix::log_session (bool login, const char *hostname)
283			{
284	root	1.1	struct passwd *pwent = getpwuid (getuid ());
285	sf-exg	1.39	const char *user = (pwent && pwent->pw_name) ? pwent->pw_name : "?";
286	root	1.1
287	sf-exg	1.54	const char *pty = name;
288
289	root	1.1	if (!strncmp (pty, "/dev/", 5))
290			pty += 5; /* skip /dev/ prefix */
291
292			#ifdef HAVE_STRUCT_UTMP
293	sf-exg	1.54	struct utmp *tmput;
294	sf-exg	1.55	struct utmp ut;
295			fill_utmp (&ut, login, cmd_pid, pty, user, hostname);
296	root	1.1	#endif
297
298			#ifdef HAVE_STRUCT_UTMPX
299	sf-exg	1.54	struct utmpx *tmputx;
300	sf-exg	1.55	struct utmpx utx;
301			fill_utmpx (&utx, login, cmd_pid, pty, user, hostname);
302	root	1.1	#endif
303
304			#ifdef HAVE_STRUCT_UTMP
305			# ifdef HAVE_UTMP_PID
306	sf-exg	1.37	setutent ();
307	sf-exg	1.55	if (login \|\| ((tmput = getutid (&ut)) && tmput->ut_pid == cmd_pid))
308			pututline (&ut);
309	sf-exg	1.42	endutent ();
310	sf-exg	1.38	# else
311	sf-exg	1.70	if (utmp_pos > 0)
312			write_record (UTMP_FILE, utmp_pos, &ut, sizeof (ut));
313	root	1.1	# endif
314			#endif
315
316			#ifdef HAVE_STRUCT_UTMPX
317	sf-exg	1.37	setutxent ();
318	sf-exg	1.55	if (login \|\| ((tmputx = getutxid (&utx)) && tmputx->ut_pid == cmd_pid))
319			pututxline (&utx);
320	sf-exg	1.42	endutxent ();
321	root	1.1	#endif
322
323			#ifdef WTMP_SUPPORT
324	root	1.2	if (login_shell)
325	root	1.1	{
326			# ifdef HAVE_STRUCT_UTMP
327			# ifdef HAVE_UPDWTMP
328	sf-exg	1.55	updwtmp (WTMP_FILE, &ut);
329	root	1.1	# else
330	sf-exg	1.55	update_wtmp (WTMP_FILE, &ut);
331	root	1.1	# endif
332			# endif
333	root	1.2	# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
334	sf-exg	1.55	updwtmpx (WTMPX_FILE, &utx);
335	root	1.1	# endif
336			}
337			#endif
338	sf-exg	1.54
339	sf-exg	1.31	#ifdef LASTLOG_SUPPORT
340	root	1.2	if (login_shell)
341	sf-exg	1.54	if (login)
342	sf-exg	1.60	{
343			if (pwent)
344			update_lastlog (pty, hostname);
345			else
346	sf-exg	1.66	PTYTTY_WARN ("no entry in password file, not updating lastlog.\n");
347	sf-exg	1.60	}
348	root	1.1	#endif
349			}
350
351			/* ------------------------------------------------------------------------- */
352			/*
353			* remove utmp and wtmp entries
354			*/
355			void
356	root	1.3	ptytty_unix::logout ()
357	root	1.1	{
358	root	1.2	if (!cmd_pid)
359			return;
360
361	sf-exg	1.54	log_session (false, 0);
362	root	1.2
363			cmd_pid = 0;
364	root	1.1	}
365
366	root	1.5	#else
367			void
368			ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
369			{
370			}
371			#endif
372