rxvt-unicode/src/logging.C

/*--------------------------------*-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      Marc Lehmann <pcg@goof.com>
 *
 * 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 "rxvt.h"
#include "logging.h"

#ifdef UTMP_SUPPORT

#if HAVE_STRUCT_UTMP
static int              rxvt_write_bsd_utmp              (int utmp_pos, struct utmp *wu);
static void             rxvt_update_wtmp                 (const char *fname, const struct utmp *putmp);
#endif

static void             rxvt_update_lastlog              (const char *fname, const char *pty, const char *host);

/*
 * 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
 */

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

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

  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 if (strncmp (pty, "pty", 3) && strncmp (pty, "tty", 3))
    {
      rxvt_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty);
      return;
    }
#endif

#ifdef HAVE_STRUCT_UTMP
  memset (ut, 0, sizeof (struct utmp));
# ifdef HAVE_UTMP_PID
  setutent ();
  strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
  ut->ut_type = DEAD_PROCESS;
  getutid (ut);         /* position to entry in utmp file */
  strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
# endif
#endif

#ifdef HAVE_STRUCT_UTMPX
  memset (utx, 0, sizeof (struct utmpx));
  setutxent ();
  strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
  utx->ut_type = DEAD_PROCESS;
  getutxid (utx);               /* position to entry in utmp file */
  strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
#endif

#ifdef HAVE_STRUCT_UTMP
  strncpy (ut->ut_line, pty, sizeof (ut->ut_line));
  ut->ut_time = time (NULL);
# ifdef HAVE_UTMP_PID
  strncpy (ut->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
          sizeof (ut->ut_user));
  strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
  ut->ut_time = time (NULL);
  ut->ut_pid = cmd_pid;
#  ifdef HAVE_UTMP_HOST
  strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
#  endif
  ut->ut_type = USER_PROCESS;
  pututline (ut);
  endutent ();                  /* close the file */
  utmp_pos = 0;
# else
  strncpy (ut->ut_name, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
          sizeof (ut->ut_name));
#  ifdef HAVE_UTMP_HOST
  strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
#  endif
# endif
#endif

#ifdef HAVE_STRUCT_UTMPX
  strncpy (utx->ut_line, pty, sizeof (utx->ut_line));
  strncpy (utx->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
          sizeof (utx->ut_user));
  strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
# if HAVE_UTMPX_SESSION
  utx->ut_session = getsid (0);
# endif
  utx->ut_tv.tv_sec = time (NULL);
  utx->ut_tv.tv_usec = 0;
  utx->ut_pid = cmd_pid;
# ifdef HAVE_UTMPX_HOST
  strncpy (utx->ut_host, hostname, sizeof (utx->ut_host));
#  if 0
  {
    char           *colon;

    if ((colon = strrchr (ut->ut_host, ':')) != NULL)
      *colon = '\0';
  }
#  endif
# endif
  utx->ut_type = USER_PROCESS;
  pututxline (utx);
  endutxent ();         /* close the file */
  utmp_pos = 0;
#endif

#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)

  {
# ifdef HAVE_TTYSLOT
    i = ttyslot ();
    if (rxvt_write_bsd_utmp (i, ut))
      utmp_pos = i;
# else
    FILE           *fd0;

    if ((fd0 = fopen (TTYTAB_FILENAME, "r")) != NULL)
      {
        char buf[256], name[256];

        buf[sizeof (buf) - 1] = '\0';
        for (i = 1; (fgets (buf, sizeof (buf) - 1, fd0) != NULL);)
          {
            if (*buf == '#' || sscanf (buf, "%s", name) != 1)
              continue;
            if (!strcmp (ut->ut_line, name))
              {
                if (!rxvt_write_bsd_utmp (i, ut))
                  i = 0;
                utmp_pos = i;
                fclose (fd0);
                break;
              }
            i++;
          }
        fclose (fd0);
      }
# endif
  }
#endif

#ifdef WTMP_SUPPORT
# ifdef WTMP_ONLY_ON_LOGIN
  if (login_shell)
# endif
    {
# ifdef HAVE_STRUCT_UTMP
#  ifdef HAVE_UPDWTMP
      updwtmp (RXVT_WTMP_FILE, ut);
#  else
      rxvt_update_wtmp (RXVT_WTMP_FILE, ut);
#  endif
# endif
# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
      updwtmpx (RXVT_WTMPX_FILE, utx);
# endif
    }
#endif
#if defined(LASTLOG_SUPPORT) && defined(RXVT_LASTLOG_FILE)
  if (login_shell)
    rxvt_update_lastlog (RXVT_LASTLOG_FILE, pty, hostname);
#endif
}

/* ------------------------------------------------------------------------- */
/*
 * remove utmp and wtmp entries
 */
void
rxvt_session::logout ()
{
#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
# ifdef HAVE_UTMP_PID
  memset (ut, 0, sizeof (struct utmp));
  setutent ();
  strncpy (ut->ut_id, this->ut_id, sizeof (ut->ut_id));
  ut->ut_type = USER_PROCESS;
  if ((tmput = getutid (ut)))           /* position to entry in utmp file */
    ut = tmput;
  ut->ut_type = DEAD_PROCESS;
# else
  memset (ut->ut_name, 0, sizeof (ut->ut_name));
#  ifdef HAVE_UTMP_HOST
  memset (ut->ut_host, 0, sizeof (ut->ut_host));
#  endif
# endif
  ut->ut_time = time (NULL);
#endif

#ifdef HAVE_STRUCT_UTMPX
  memset (utx, 0, sizeof (struct utmpx));
  setutxent ();
  strncpy (utx->ut_id, this->ut_id, sizeof (utx->ut_id));
  utx->ut_type = USER_PROCESS;
  if ((tmputx = getutxid (utx)))        /* position to entry in utmp file */
    utx = tmputx;
  utx->ut_type = DEAD_PROCESS;
# if HAVE_UTMPX_SESSION
  utx->ut_session = getsid (0);
# endif
  utx->ut_tv.tv_sec = time (NULL);
  utx->ut_tv.tv_usec = 0;
#endif

  /*
   * Write ending wtmp entry
   */
#ifdef WTMP_SUPPORT
# ifdef WTMP_ONLY_ON_LOGIN
  if (login_shell)
# endif
    {
# ifdef HAVE_STRUCT_UTMP
#  ifdef HAVE_UPDWTMP
      updwtmp (RXVT_WTMP_FILE, ut);
#  else
      rxvt_update_wtmp (RXVT_WTMP_FILE, ut);
#  endif
# endif
# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
      updwtmpx (RXVT_WTMPX_FILE, utx);
# endif
    }
#endif

  /*
   * Write utmp entry
   */
#ifdef HAVE_STRUCT_UTMP
# ifdef HAVE_UTMP_PID
  if (ut->ut_pid == cmd_pid)
    pututline (ut);
  endutent ();
# else
  memset (ut, 0, sizeof (struct utmp));
  rxvt_write_bsd_utmp (utmp_pos, ut);
# endif
#endif
#ifdef HAVE_STRUCT_UTMPX
  if (utx->ut_pid == cmd_pid)
    pututxline (utx);
  endutxent ();
#endif
}

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

  if (utmp_pos <= 0 || (fd = open (RXVT_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
rxvt_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
rxvt_update_lastlog (const char *fname, const char *pty, const char *host)
{
# ifdef HAVE_STRUCT_LASTLOGX
  struct lastlogx llx;
# endif
# ifdef HAVE_STRUCT_LASTLOG
  int             fd;
  struct lastlog  ll;
#  ifdef LASTLOG_IS_DIR
  char            lastlogfile[256];
#  endif
  struct passwd  *pwent;
# endif

# ifdef HAVE_STRUCT_LASTLOGX
  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 (RXVT_LASTLOGX_FILE, getuid (), &llx);
# endif

# ifdef HAVE_STRUCT_LASTLOG
  pwent = getpwuid (getuid ());
  if (!pwent)
    {
      rxvt_warn ("no entry in password file, not updating lastlog.\n");
      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));
#  ifdef LASTLOG_IS_DIR
  sprintf (lastlogfile, "%.*s/%.*s",
          sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2, fname,
          sizeof (pwent->pw_name),
          (!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 ((fd = open (fname, 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                        /* LASTLOG_IS_DIR */
# endif                         /* HAVE_STRUCT_LASTLOG */
}
#endif                          /* LASTLOG_SUPPORT */
/* ------------------------------------------------------------------------- */

#endif                          /* UTMP_SUPPORT */
Revision:	1.26
Committed:	Tue Jan 17 09:31:24 2006 UTC (18 years, 5 months ago) by ayin
Content type:	text/plain
Branch:	MAIN
Changes since 1.25:	+3 -7 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/---------------------------------C----------------------------------
2	pcg	1.9	* File: logging.C
3	pcg	1.1	----------------------------------------------------------------------
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	pcg	1.9	* Copyright (c) 2004 Marc Lehmann <pcg@goof.com>
18	pcg	1.1	*
19			* This program is free software; you can redistribute it and/or modify
20			* it under the terms of the GNU General Public License as published by
21			* the Free Software Foundation; either version 2 of the License, or
22			* (at your option) any later version.
23			*
24			* This program is distributed in the hope that it will be useful,
25			* but WITHOUT ANY WARRANTY; without even the implied warranty of
26			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27			* GNU General Public License for more details.
28			*
29			* You should have received a copy of the GNU General Public License
30			* along with this program; if not, write to the Free Software
31			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
32			----------------------------------------------------------------------/
33
34	root	1.20	#include "../config.h"
35			#include "rxvt.h"
36	pcg	1.1	#include "logging.h"
37	root	1.20
38	pcg	1.1	#ifdef UTMP_SUPPORT
39
40	root	1.16	#if HAVE_STRUCT_UTMP
41	root	1.22	static int rxvt_write_bsd_utmp (int utmp_pos, struct utmp *wu);
42			static void rxvt_update_wtmp (const char fname, const struct utmp putmp);
43	root	1.16	#endif
44
45	root	1.22	static void rxvt_update_lastlog (const char fname, const char pty, const char *host);
46	root	1.14
47	pcg	1.1	/*
48			* BSD style utmp entry
49			* ut_line, ut_name, ut_host, ut_time
50			* SYSV style utmp (and utmpx) entry
51			* ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time
52			*/
53
54			/* ------------------------------------------------------------------------- */
55
56			/*
57			* make and write utmp and wtmp entries
58			*/
59			void
60	root	1.25	rxvt_session::login (const char pty, int cmd_pid, bool login_shell, const char hostname)
61	pcg	1.1	{
62	root	1.25	this->cmd_pid = cmd_pid;
63			this->login_shell = login_shell;
64
65	pcg	1.1	#ifdef HAVE_STRUCT_UTMP
66	root	1.12	struct utmp *ut = &this->ut;
67	pcg	1.1	#endif
68			#ifdef HAVE_STRUCT_UTMPX
69	root	1.12	struct utmpx *utx = &this->utx;
70	pcg	1.1	#endif
71	root	1.12	int i;
72	root	1.17	struct passwd *pwent = getpwuid (getuid ());
73	pcg	1.1
74	root	1.11	if (!strncmp (pty, "/dev/", 5))
75	pcg	1.6	pty += 5; /* skip /dev/ prefix */
76	pcg	1.1
77	root	1.22	#if defined(HAVE_UTMP_PID) \|\| defined(HAVE_STRUCT_UTMPX)
78	root	1.11	if (!strncmp (pty, "pty", 3) \|\| !strncmp (pty, "tty", 3))
79	root	1.13	strncpy (ut_id, pty + 3, sizeof (ut_id));
80	pcg	1.7	else if (sscanf (pty, "pts/%d", &i) == 1)
81			sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */
82	root	1.11	else if (strncmp (pty, "pty", 3) && strncmp (pty, "tty", 3))
83	pcg	1.6	{
84	pcg	1.8	rxvt_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty);
85	pcg	1.6	return;
86	pcg	1.1	}
87	root	1.13	#endif
88	pcg	1.1
89			#ifdef HAVE_STRUCT_UTMP
90	root	1.11	memset (ut, 0, sizeof (struct utmp));
91	pcg	1.1	# ifdef HAVE_UTMP_PID
92	pcg	1.7	setutent ();
93	root	1.11	strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
94	pcg	1.6	ut->ut_type = DEAD_PROCESS;
95	pcg	1.7	getutid (ut); /* position to entry in utmp file */
96	root	1.21	strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
97	pcg	1.1	# endif
98			#endif
99
100			#ifdef HAVE_STRUCT_UTMPX
101	root	1.11	memset (utx, 0, sizeof (struct utmpx));
102	pcg	1.7	setutxent ();
103	root	1.11	strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
104	pcg	1.6	utx->ut_type = DEAD_PROCESS;
105	pcg	1.7	getutxid (utx); /* position to entry in utmp file */
106	root	1.21	strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
107	pcg	1.1	#endif
108
109			#ifdef HAVE_STRUCT_UTMP
110	root	1.11	strncpy (ut->ut_line, pty, sizeof (ut->ut_line));
111	pcg	1.7	ut->ut_time = time (NULL);
112	pcg	1.1	# ifdef HAVE_UTMP_PID
113	root	1.11	strncpy (ut->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
114	pcg	1.7	sizeof (ut->ut_user));
115	root	1.11	strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
116	pcg	1.7	ut->ut_time = time (NULL);
117	pcg	1.6	ut->ut_pid = cmd_pid;
118	pcg	1.1	# ifdef HAVE_UTMP_HOST
119	root	1.11	strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
120	pcg	1.1	# endif
121	pcg	1.6	ut->ut_type = USER_PROCESS;
122	pcg	1.7	pututline (ut);
123			endutent (); /* close the file */
124	pcg	1.6	utmp_pos = 0;
125	pcg	1.1	# else
126	root	1.11	strncpy (ut->ut_name, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
127	pcg	1.7	sizeof (ut->ut_name));
128	pcg	1.1	# ifdef HAVE_UTMP_HOST
129	root	1.11	strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
130	pcg	1.1	# endif
131			# endif
132			#endif
133
134			#ifdef HAVE_STRUCT_UTMPX
135	root	1.11	strncpy (utx->ut_line, pty, sizeof (utx->ut_line));
136			strncpy (utx->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
137	pcg	1.7	sizeof (utx->ut_user));
138	root	1.11	strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
139	root	1.15	# if HAVE_UTMPX_SESSION
140	pcg	1.7	utx->ut_session = getsid (0);
141	root	1.15	# endif
142	pcg	1.7	utx->ut_tv.tv_sec = time (NULL);
143	pcg	1.6	utx->ut_tv.tv_usec = 0;
144			utx->ut_pid = cmd_pid;
145	pcg	1.1	# ifdef HAVE_UTMPX_HOST
146	root	1.11	strncpy (utx->ut_host, hostname, sizeof (utx->ut_host));
147	pcg	1.1	# if 0
148	pcg	1.6	{
149			char *colon;
150	pcg	1.1
151	root	1.11	if ((colon = strrchr (ut->ut_host, ':')) != NULL)
152	pcg	1.6	*colon = '\0';
153			}
154	pcg	1.1	# endif
155			# endif
156	pcg	1.6	utx->ut_type = USER_PROCESS;
157	pcg	1.7	pututxline (utx);
158			endutxent (); /* close the file */
159	pcg	1.6	utmp_pos = 0;
160	pcg	1.1	#endif
161
162			#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
163	pcg	1.6
164			{
165	pcg	1.1	# ifdef HAVE_TTYSLOT
166	pcg	1.7	i = ttyslot ();
167			if (rxvt_write_bsd_utmp (i, ut))
168	pcg	1.6	utmp_pos = i;
169	pcg	1.1	# else
170	pcg	1.6	FILE *fd0;
171	pcg	1.1
172	pcg	1.7	if ((fd0 = fopen (TTYTAB_FILENAME, "r")) != NULL)
173	pcg	1.6	{
174	root	1.18	char buf[256], name[256];
175	pcg	1.6
176	pcg	1.7	buf[sizeof (buf) - 1] = '\0';
177			for (i = 1; (fgets (buf, sizeof (buf) - 1, fd0) != NULL);)
178	pcg	1.6	{
179	pcg	1.7	if (*buf == '#' \|\| sscanf (buf, "%s", name) != 1)
180	pcg	1.6	continue;
181	root	1.11	if (!strcmp (ut->ut_line, name))
182	pcg	1.6	{
183	pcg	1.7	if (!rxvt_write_bsd_utmp (i, ut))
184	pcg	1.6	i = 0;
185			utmp_pos = i;
186	pcg	1.7	fclose (fd0);
187	pcg	1.6	break;
188			}
189			i++;
190			}
191	pcg	1.7	fclose (fd0);
192	pcg	1.6	}
193			# endif
194			}
195	pcg	1.1	#endif
196
197			#ifdef WTMP_SUPPORT
198			# ifdef WTMP_ONLY_ON_LOGIN
199	root	1.25	if (login_shell)
200	pcg	1.1	# endif
201			{
202			# ifdef HAVE_STRUCT_UTMP
203			# ifdef HAVE_UPDWTMP
204	pcg	1.7	updwtmp (RXVT_WTMP_FILE, ut);
205	pcg	1.1	# else
206	pcg	1.7	rxvt_update_wtmp (RXVT_WTMP_FILE, ut);
207	pcg	1.1	# endif
208			# endif
209	root	1.23	# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
210	pcg	1.7	updwtmpx (RXVT_WTMPX_FILE, utx);
211	pcg	1.1	# endif
212			}
213			#endif
214			#if defined(LASTLOG_SUPPORT) && defined(RXVT_LASTLOG_FILE)
215	root	1.25	if (login_shell)
216	pcg	1.7	rxvt_update_lastlog (RXVT_LASTLOG_FILE, pty, hostname);
217	pcg	1.1	#endif
218			}
219
220			/* ------------------------------------------------------------------------- */
221			/*
222			* remove utmp and wtmp entries
223			*/
224			void
225	root	1.25	rxvt_session::logout ()
226	pcg	1.1	{
227			#ifdef HAVE_STRUCT_UTMP
228	ayin	1.26	struct utmp tmput, ut = &this->ut;
229	pcg	1.1	#endif
230			#ifdef HAVE_STRUCT_UTMPX
231	root	1.12	struct utmpx tmputx, utx = &this->utx;
232	pcg	1.1	#endif
233
234			#ifdef HAVE_STRUCT_UTMP
235			# ifdef HAVE_UTMP_PID
236	root	1.11	memset (ut, 0, sizeof (struct utmp));
237	pcg	1.7	setutent ();
238	root	1.21	strncpy (ut->ut_id, this->ut_id, sizeof (ut->ut_id));
239	pcg	1.6	ut->ut_type = USER_PROCESS;
240	ayin	1.26	if ((tmput = getutid (ut))) /* position to entry in utmp file */
241			ut = tmput;
242	pcg	1.6	ut->ut_type = DEAD_PROCESS;
243			# else
244	root	1.11	memset (ut->ut_name, 0, sizeof (ut->ut_name));
245	pcg	1.1	# ifdef HAVE_UTMP_HOST
246	root	1.11	memset (ut->ut_host, 0, sizeof (ut->ut_host));
247	pcg	1.1	# endif
248			# endif
249	pcg	1.7	ut->ut_time = time (NULL);
250	pcg	1.1	#endif
251
252			#ifdef HAVE_STRUCT_UTMPX
253	root	1.11	memset (utx, 0, sizeof (struct utmpx));
254	pcg	1.7	setutxent ();
255	root	1.21	strncpy (utx->ut_id, this->ut_id, sizeof (utx->ut_id));
256	pcg	1.6	utx->ut_type = USER_PROCESS;
257	pcg	1.7	if ((tmputx = getutxid (utx))) /* position to entry in utmp file */
258	pcg	1.6	utx = tmputx;
259			utx->ut_type = DEAD_PROCESS;
260	root	1.15	# if HAVE_UTMPX_SESSION
261	pcg	1.7	utx->ut_session = getsid (0);
262	root	1.15	# endif
263	pcg	1.7	utx->ut_tv.tv_sec = time (NULL);
264	pcg	1.6	utx->ut_tv.tv_usec = 0;
265	pcg	1.1	#endif
266
267	pcg	1.6	/*
268			* Write ending wtmp entry
269			*/
270	pcg	1.1	#ifdef WTMP_SUPPORT
271			# ifdef WTMP_ONLY_ON_LOGIN
272	root	1.25	if (login_shell)
273	pcg	1.1	# endif
274			{
275			# ifdef HAVE_STRUCT_UTMP
276			# ifdef HAVE_UPDWTMP
277	pcg	1.7	updwtmp (RXVT_WTMP_FILE, ut);
278	pcg	1.1	# else
279	pcg	1.7	rxvt_update_wtmp (RXVT_WTMP_FILE, ut);
280	pcg	1.1	# endif
281			# endif
282	root	1.24	# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
283	pcg	1.7	updwtmpx (RXVT_WTMPX_FILE, utx);
284	pcg	1.1	# endif
285			}
286			#endif
287
288	pcg	1.6	/*
289			* Write utmp entry
290			*/
291	pcg	1.1	#ifdef HAVE_STRUCT_UTMP
292			# ifdef HAVE_UTMP_PID
293	pcg	1.6	if (ut->ut_pid == cmd_pid)
294	pcg	1.7	pututline (ut);
295			endutent ();
296	pcg	1.1	# else
297	root	1.11	memset (ut, 0, sizeof (struct utmp));
298	pcg	1.7	rxvt_write_bsd_utmp (utmp_pos, ut);
299	pcg	1.1	# endif
300			#endif
301			#ifdef HAVE_STRUCT_UTMPX
302	pcg	1.6	if (utx->ut_pid == cmd_pid)
303	pcg	1.7	pututxline (utx);
304			endutxent ();
305	pcg	1.1	#endif
306			}
307
308			/* ------------------------------------------------------------------------- */
309			/*
310			* Write a BSD style utmp entry
311			*/
312	root	1.22	#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
313			static int
314	pcg	1.7	rxvt_write_bsd_utmp (int utmp_pos, struct utmp *wu)
315	pcg	1.1	{
316	pcg	1.6	int fd;
317	pcg	1.1
318	pcg	1.7	if (utmp_pos <= 0 \|\| (fd = open (RXVT_UTMP_FILE, O_WRONLY)) == -1)
319	pcg	1.6	return 0;
320	pcg	1.1
321	pcg	1.7	if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
322			write (fd, wu, sizeof (struct utmp));
323			close (fd);
324	pcg	1.6	return 1;
325	pcg	1.1	}
326			#endif
327
328			/* ------------------------------------------------------------------------- */
329			/*
330			* Update a BSD style wtmp entry
331			*/
332	root	1.16	#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
333	root	1.22	static void
334	pcg	1.7	rxvt_update_wtmp (const char fname, const struct utmp putmp)
335	pcg	1.1	{
336	pcg	1.6	int fd, gotlock, retry;
337			struct flock lck; /* fcntl locking scheme */
338			struct stat sbuf;
339
340	pcg	1.7	if ((fd = open (fname, O_WRONLY \| O_APPEND, 0)) < 0)
341	pcg	1.6	return;
342
343			lck.l_whence = SEEK_END; /* start lock at current eof */
344			lck.l_len = 0; /* end at ``largest possible eof'' */
345			lck.l_start = 0;
346			lck.l_type = F_WRLCK; /* we want a write lock */
347
348			/* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
349			for (retry = 10, gotlock = 0; retry--;)
350	pcg	1.7	if (fcntl (fd, F_SETLK, &lck) != -1)
351	pcg	1.6	{
352			gotlock = 1;
353			break;
354			}
355			else if (errno != EAGAIN && errno != EACCES)
356			break;
357			if (!gotlock)
358			{ /* give it up */
359	pcg	1.7	close (fd);
360	pcg	1.6	return;
361			}
362	pcg	1.7	if (fstat (fd, &sbuf) == 0)
363			if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
364			ftruncate (fd, sbuf.st_size); /* remove bad writes */
365	pcg	1.6
366			lck.l_type = F_UNLCK; /* unlocking the file */
367	pcg	1.7	fcntl (fd, F_SETLK, &lck);
368			close (fd);
369	pcg	1.1	}
370			#endif
371
372			/* ------------------------------------------------------------------------- */
373			#ifdef LASTLOG_SUPPORT
374	root	1.22	static void
375	pcg	1.7	rxvt_update_lastlog (const char fname, const char pty, const char *host)
376	pcg	1.1	{
377			# ifdef HAVE_STRUCT_LASTLOGX
378	pcg	1.6	struct lastlogx llx;
379	pcg	1.1	# endif
380			# ifdef HAVE_STRUCT_LASTLOG
381	pcg	1.6	int fd;
382			struct lastlog ll;
383	pcg	1.1	# ifdef LASTLOG_IS_DIR
384	pcg	1.6	char lastlogfile[256];
385	pcg	1.1	# endif
386	pcg	1.6	struct passwd *pwent;
387	pcg	1.1	# endif
388
389			# ifdef HAVE_STRUCT_LASTLOGX
390	root	1.11	memset (&llx, 0, sizeof (llx));
391	pcg	1.7	llx.ll_tv.tv_sec = time (NULL);
392	pcg	1.6	llx.ll_tv.tv_usec = 0;
393	root	1.11	strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
394			strncpy (llx.ll_host, host, sizeof (llx.ll_host));
395	pcg	1.7	updlastlogx (RXVT_LASTLOGX_FILE, getuid (), &llx);
396	pcg	1.1	# endif
397
398			# ifdef HAVE_STRUCT_LASTLOG
399	pcg	1.7	pwent = getpwuid (getuid ());
400	pcg	1.6	if (!pwent)
401			{
402	pcg	1.8	rxvt_warn ("no entry in password file, not updating lastlog.\n");
403	pcg	1.6	return;
404	pcg	1.1	}
405	pcg	1.8
406	root	1.11	memset (&ll, 0, sizeof (ll));
407	pcg	1.7	ll.ll_time = time (NULL);
408	root	1.11	strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
409			strncpy (ll.ll_host, host, sizeof (ll.ll_host));
410	pcg	1.1	# ifdef LASTLOG_IS_DIR
411	pcg	1.7	sprintf (lastlogfile, "%.s/%.s",
412			sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2, fname,
413			sizeof (pwent->pw_name),
414	pcg	1.6	(!pwent->pw_name \|\| pwent->pw_name[0] == '\0') ? "unknown"
415			: pwent->pw_name);
416	pcg	1.7	if ((fd = open (lastlogfile, O_WRONLY \| O_CREAT, 0644)) >= 0)
417	pcg	1.6	{
418	pcg	1.7	write (fd, &ll, sizeof (ll));
419			close (fd);
420	pcg	1.1	}
421			# else
422	pcg	1.7	if ((fd = open (fname, O_RDWR)) != -1)
423	pcg	1.6	{
424	pcg	1.7	if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
425	pcg	1.6	SEEK_SET) != -1)
426	pcg	1.7	write (fd, &ll, sizeof (ll));
427			close (fd);
428	pcg	1.1	}
429			# endif /* LASTLOG_IS_DIR */
430			# endif /* HAVE_STRUCT_LASTLOG */
431			}
432			#endif /* LASTLOG_SUPPORT */
433			/* ------------------------------------------------------------------------- */
434
435			#endif /* UTMP_SUPPORT */