1 /*--------------------------------*-C-*---------------------------------*
3 *----------------------------------------------------------------------*
5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 1992 John Bovey <jdb@ukc.ac.uk>
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>
17 * Copyright (c) 2004 Marc Lehmann <pcg@goof.com>
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.
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.
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 /*----------------------------------------------------------------------*
35 * extern void cleanutent (void);
36 * extern void makeutent (const char * pty, const char * hostname);
39 * rxvt_update_wtmp ();
40 *----------------------------------------------------------------------*/
42 #include "../config.h" /* NECESSARY */
43 #include "rxvt.h" /* NECESSARY */
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
54 /* ------------------------------------------------------------------------- */
57 * make and write utmp and wtmp entries
60 rxvt_term::makeutent (const char *pty, const char *hostname)
62 #ifdef HAVE_STRUCT_UTMP
63 struct utmp *ut = & (this->ut);
65 #ifdef HAVE_STRUCT_UTMPX
66 struct utmpx *utx = & (this->utx);
72 struct passwd *pwent = getpwuid (getuid ());
74 if (!strncmp (pty, "/dev/", 5))
75 pty += 5; /* skip /dev/ prefix */
77 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3))
79 strncpy (ut_id, (pty + 3), sizeof (ut_id));
82 else if (sscanf (pty, "pts/%d", &i) == 1)
83 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */
85 else if (strncmp (pty, "pty", 3) && strncmp (pty, "tty", 3))
87 rxvt_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty);
91 #ifdef HAVE_STRUCT_UTMP
92 memset (ut, 0, sizeof (struct utmp));
95 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
96 ut->ut_type = DEAD_PROCESS;
97 getutid (ut); /* position to entry in utmp file */
98 strncpy (ut_id, ut_id, sizeof (ut_id));
102 #ifdef HAVE_STRUCT_UTMPX
103 memset (utx, 0, sizeof (struct utmpx));
105 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
106 utx->ut_type = DEAD_PROCESS;
107 getutxid (utx); /* position to entry in utmp file */
108 strncpy (ut_id, ut_id, sizeof (ut_id));
111 #ifdef HAVE_STRUCT_UTMP
112 strncpy (ut->ut_line, pty, sizeof (ut->ut_line));
113 ut->ut_time = time (NULL);
114 # ifdef HAVE_UTMP_PID
115 strncpy (ut->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
116 sizeof (ut->ut_user));
117 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
118 ut->ut_time = time (NULL);
119 ut->ut_pid = cmd_pid;
120 # ifdef HAVE_UTMP_HOST
121 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
123 ut->ut_type = USER_PROCESS;
125 endutent (); /* close the file */
128 strncpy (ut->ut_name, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
129 sizeof (ut->ut_name));
130 # ifdef HAVE_UTMP_HOST
131 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
136 #ifdef HAVE_STRUCT_UTMPX
137 strncpy (utx->ut_line, pty, sizeof (utx->ut_line));
138 strncpy (utx->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
139 sizeof (utx->ut_user));
140 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
141 utx->ut_session = getsid (0);
142 utx->ut_tv.tv_sec = time (NULL);
143 utx->ut_tv.tv_usec = 0;
144 utx->ut_pid = cmd_pid;
145 # ifdef HAVE_UTMPX_HOST
146 strncpy (utx->ut_host, hostname, sizeof (utx->ut_host));
151 if ((colon = strrchr (ut->ut_host, ':')) != NULL)
156 utx->ut_type = USER_PROCESS;
158 endutxent (); /* close the file */
162 #if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
168 if (rxvt_write_bsd_utmp (i, ut))
173 if ((fd0 = fopen (TTYTAB_FILENAME, "r")) != NULL)
175 char buf[256], name[256];
177 buf[sizeof (buf) - 1] = '\0';
178 for (i = 1; (fgets (buf, sizeof (buf) - 1, fd0) != NULL);)
180 if (*buf == '#' || sscanf (buf, "%s", name) != 1)
182 if (!strcmp (ut->ut_line, name))
184 if (!rxvt_write_bsd_utmp (i, ut))
200 # ifdef WTMP_ONLY_ON_LOGIN
201 if (options & Opt_loginShell)
204 # ifdef HAVE_STRUCT_UTMP
206 updwtmp (RXVT_WTMP_FILE, ut);
208 rxvt_update_wtmp (RXVT_WTMP_FILE, ut);
211 # ifdef HAVE_STRUCT_UTMPX
212 updwtmpx (RXVT_WTMPX_FILE, utx);
216 #if defined(LASTLOG_SUPPORT) && defined(RXVT_LASTLOG_FILE)
217 if (options & Opt_loginShell)
218 rxvt_update_lastlog (RXVT_LASTLOG_FILE, pty, hostname);
222 /* ------------------------------------------------------------------------- */
224 * remove utmp and wtmp entries
227 rxvt_term::cleanutent ()
229 #ifdef HAVE_STRUCT_UTMP
230 struct utmp *ut = & (this->ut);
232 #ifdef HAVE_STRUCT_UTMPX
233 struct utmpx *tmputx, *utx = & (this->utx);
236 #ifdef HAVE_STRUCT_UTMP
237 # ifdef HAVE_UTMP_PID
238 memset (ut, 0, sizeof (struct utmp));
240 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
241 ut->ut_type = USER_PROCESS;
243 struct utmp *tmput = getutid (ut);
245 if (tmput) /* position to entry in utmp file */
248 ut->ut_type = DEAD_PROCESS;
250 memset (ut->ut_name, 0, sizeof (ut->ut_name));
251 # ifdef HAVE_UTMP_HOST
252 memset (ut->ut_host, 0, sizeof (ut->ut_host));
255 ut->ut_time = time (NULL);
258 #ifdef HAVE_STRUCT_UTMPX
259 memset (utx, 0, sizeof (struct utmpx));
261 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
262 utx->ut_type = USER_PROCESS;
263 if ((tmputx = getutxid (utx))) /* position to entry in utmp file */
265 utx->ut_type = DEAD_PROCESS;
266 utx->ut_session = getsid (0);
267 utx->ut_tv.tv_sec = time (NULL);
268 utx->ut_tv.tv_usec = 0;
272 * Write ending wtmp entry
275 # ifdef WTMP_ONLY_ON_LOGIN
276 if (options & Opt_loginShell)
279 # ifdef HAVE_STRUCT_UTMP
281 updwtmp (RXVT_WTMP_FILE, ut);
283 rxvt_update_wtmp (RXVT_WTMP_FILE, ut);
286 # ifdef HAVE_STRUCT_UTMPX
287 updwtmpx (RXVT_WTMPX_FILE, utx);
295 #ifdef HAVE_STRUCT_UTMP
296 # ifdef HAVE_UTMP_PID
297 if (ut->ut_pid == cmd_pid)
301 memset (ut, 0, sizeof (struct utmp));
302 rxvt_write_bsd_utmp (utmp_pos, ut);
305 #ifdef HAVE_STRUCT_UTMPX
306 if (utx->ut_pid == cmd_pid)
312 /* ------------------------------------------------------------------------- */
314 * Write a BSD style utmp entry
319 rxvt_write_bsd_utmp (int utmp_pos, struct utmp *wu)
323 if (utmp_pos <= 0 || (fd = open (RXVT_UTMP_FILE, O_WRONLY)) == -1)
326 if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
327 write (fd, wu, sizeof (struct utmp));
333 /* ------------------------------------------------------------------------- */
335 * Update a BSD style wtmp entry
337 #if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP)
340 rxvt_update_wtmp (const char *fname, const struct utmp *putmp)
342 int fd, gotlock, retry;
343 struct flock lck; /* fcntl locking scheme */
346 if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
349 lck.l_whence = SEEK_END; /* start lock at current eof */
350 lck.l_len = 0; /* end at ``largest possible eof'' */
352 lck.l_type = F_WRLCK; /* we want a write lock */
354 /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
355 for (retry = 10, gotlock = 0; retry--;)
356 if (fcntl (fd, F_SETLK, &lck) != -1)
361 else if (errno != EAGAIN && errno != EACCES)
368 if (fstat (fd, &sbuf) == 0)
369 if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
370 ftruncate (fd, sbuf.st_size); /* remove bad writes */
372 lck.l_type = F_UNLCK; /* unlocking the file */
373 fcntl (fd, F_SETLK, &lck);
378 /* ------------------------------------------------------------------------- */
379 #ifdef LASTLOG_SUPPORT
382 rxvt_update_lastlog (const char *fname, const char *pty, const char *host)
384 # ifdef HAVE_STRUCT_LASTLOGX
387 # ifdef HAVE_STRUCT_LASTLOG
390 # ifdef LASTLOG_IS_DIR
391 char lastlogfile[256];
393 struct passwd *pwent;
396 # ifdef HAVE_STRUCT_LASTLOGX
397 memset (&llx, 0, sizeof (llx));
398 llx.ll_tv.tv_sec = time (NULL);
399 llx.ll_tv.tv_usec = 0;
400 strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
401 strncpy (llx.ll_host, host, sizeof (llx.ll_host));
402 updlastlogx (RXVT_LASTLOGX_FILE, getuid (), &llx);
405 # ifdef HAVE_STRUCT_LASTLOG
406 pwent = getpwuid (getuid ());
409 rxvt_warn ("no entry in password file, not updating lastlog.\n");
413 memset (&ll, 0, sizeof (ll));
414 ll.ll_time = time (NULL);
415 strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
416 strncpy (ll.ll_host, host, sizeof (ll.ll_host));
417 # ifdef LASTLOG_IS_DIR
418 sprintf (lastlogfile, "%.*s/%.*s",
419 sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2, fname,
420 sizeof (pwent->pw_name),
421 (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
423 if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
425 write (fd, &ll, sizeof (ll));
429 if ((fd = open (fname, O_RDWR)) != -1)
431 if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
433 write (fd, &ll, sizeof (ll));
436 # endif /* LASTLOG_IS_DIR */
437 # endif /* HAVE_STRUCT_LASTLOG */
439 #endif /* LASTLOG_SUPPORT */
440 /* ------------------------------------------------------------------------- */
442 #endif /* UTMP_SUPPORT */