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 int rxvt_write_bsd_utmp (int utmp_pos, struct utmp *wu);
49 void rxvt_update_wtmp (const char *fname, const struct utmp *putmp);
52 void rxvt_update_lastlog (const char *fname, const char *pty, const char *host);
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
61 /* ------------------------------------------------------------------------- */
64 * make and write utmp and wtmp entries
67 rxvt_term::makeutent (const char *pty, const char *hostname)
69 #ifdef HAVE_STRUCT_UTMP
70 struct utmp *ut = &this->ut;
72 #ifdef HAVE_STRUCT_UTMPX
73 struct utmpx *utx = &this->utx;
78 struct passwd *pwent = getpwuid (getuid ());
80 if (!strncmp (pty, "/dev/", 5))
81 pty += 5; /* skip /dev/ prefix */
84 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3))
85 strncpy (ut_id, pty + 3, sizeof (ut_id));
86 else if (sscanf (pty, "pts/%d", &i) == 1)
87 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */
88 else if (strncmp (pty, "pty", 3) && strncmp (pty, "tty", 3))
90 rxvt_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty);
95 #ifdef HAVE_STRUCT_UTMP
96 memset (ut, 0, sizeof (struct utmp));
99 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
100 ut->ut_type = DEAD_PROCESS;
101 getutid (ut); /* position to entry in utmp file */
102 strncpy (ut_id, ut_id, sizeof (ut_id));
106 #ifdef HAVE_STRUCT_UTMPX
107 memset (utx, 0, sizeof (struct utmpx));
109 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
110 utx->ut_type = DEAD_PROCESS;
111 getutxid (utx); /* position to entry in utmp file */
112 strncpy (ut_id, ut_id, sizeof (ut_id));
115 #ifdef HAVE_STRUCT_UTMP
116 strncpy (ut->ut_line, pty, sizeof (ut->ut_line));
117 ut->ut_time = time (NULL);
118 # ifdef HAVE_UTMP_PID
119 strncpy (ut->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
120 sizeof (ut->ut_user));
121 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
122 ut->ut_time = time (NULL);
123 ut->ut_pid = cmd_pid;
124 # ifdef HAVE_UTMP_HOST
125 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
127 ut->ut_type = USER_PROCESS;
129 endutent (); /* close the file */
132 strncpy (ut->ut_name, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
133 sizeof (ut->ut_name));
134 # ifdef HAVE_UTMP_HOST
135 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
140 #ifdef HAVE_STRUCT_UTMPX
141 strncpy (utx->ut_line, pty, sizeof (utx->ut_line));
142 strncpy (utx->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
143 sizeof (utx->ut_user));
144 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
145 # if HAVE_UTMPX_SESSION
146 utx->ut_session = getsid (0);
148 utx->ut_tv.tv_sec = time (NULL);
149 utx->ut_tv.tv_usec = 0;
150 utx->ut_pid = cmd_pid;
151 # ifdef HAVE_UTMPX_HOST
152 strncpy (utx->ut_host, hostname, sizeof (utx->ut_host));
157 if ((colon = strrchr (ut->ut_host, ':')) != NULL)
162 utx->ut_type = USER_PROCESS;
164 endutxent (); /* close the file */
168 #if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
174 if (rxvt_write_bsd_utmp (i, ut))
179 if ((fd0 = fopen (TTYTAB_FILENAME, "r")) != NULL)
181 char buf[256], name[256];
183 buf[sizeof (buf) - 1] = '\0';
184 for (i = 1; (fgets (buf, sizeof (buf) - 1, fd0) != NULL);)
186 if (*buf == '#' || sscanf (buf, "%s", name) != 1)
188 if (!strcmp (ut->ut_line, name))
190 if (!rxvt_write_bsd_utmp (i, ut))
206 # ifdef WTMP_ONLY_ON_LOGIN
207 if (options & Opt_loginShell)
210 # ifdef HAVE_STRUCT_UTMP
212 updwtmp (RXVT_WTMP_FILE, ut);
214 rxvt_update_wtmp (RXVT_WTMP_FILE, ut);
217 # ifdef HAVE_STRUCT_UTMPX
219 updwtmpx (RXVT_WTMPX_FILE, utx);
226 #if defined(LASTLOG_SUPPORT) && defined(RXVT_LASTLOG_FILE)
227 if (options & Opt_loginShell)
228 rxvt_update_lastlog (RXVT_LASTLOG_FILE, pty, hostname);
232 /* ------------------------------------------------------------------------- */
234 * remove utmp and wtmp entries
237 rxvt_term::cleanutent ()
239 #ifdef HAVE_STRUCT_UTMP
240 struct utmp *ut = &this->ut;
242 #ifdef HAVE_STRUCT_UTMPX
243 struct utmpx *tmputx, *utx = &this->utx;
246 #ifdef HAVE_STRUCT_UTMP
247 # ifdef HAVE_UTMP_PID
248 memset (ut, 0, sizeof (struct utmp));
250 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
251 ut->ut_type = USER_PROCESS;
253 struct utmp *tmput = getutid (ut);
255 if (tmput) /* position to entry in utmp file */
258 ut->ut_type = DEAD_PROCESS;
260 memset (ut->ut_name, 0, sizeof (ut->ut_name));
261 # ifdef HAVE_UTMP_HOST
262 memset (ut->ut_host, 0, sizeof (ut->ut_host));
265 ut->ut_time = time (NULL);
268 #ifdef HAVE_STRUCT_UTMPX
269 memset (utx, 0, sizeof (struct utmpx));
271 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
272 utx->ut_type = USER_PROCESS;
273 if ((tmputx = getutxid (utx))) /* position to entry in utmp file */
275 utx->ut_type = DEAD_PROCESS;
276 # if HAVE_UTMPX_SESSION
277 utx->ut_session = getsid (0);
279 utx->ut_tv.tv_sec = time (NULL);
280 utx->ut_tv.tv_usec = 0;
284 * Write ending wtmp entry
287 # ifdef WTMP_ONLY_ON_LOGIN
288 if (options & Opt_loginShell)
291 # ifdef HAVE_STRUCT_UTMP
293 updwtmp (RXVT_WTMP_FILE, ut);
295 rxvt_update_wtmp (RXVT_WTMP_FILE, ut);
298 # ifdef HAVE_STRUCT_UTMPX
300 updwtmpx (RXVT_WTMPX_FILE, utx);
311 #ifdef HAVE_STRUCT_UTMP
312 # ifdef HAVE_UTMP_PID
313 if (ut->ut_pid == cmd_pid)
317 memset (ut, 0, sizeof (struct utmp));
318 rxvt_write_bsd_utmp (utmp_pos, ut);
321 #ifdef HAVE_STRUCT_UTMPX
322 if (utx->ut_pid == cmd_pid)
328 /* ------------------------------------------------------------------------- */
330 * Write a BSD style utmp entry
334 rxvt_write_bsd_utmp (int utmp_pos, struct utmp *wu)
338 if (utmp_pos <= 0 || (fd = open (RXVT_UTMP_FILE, O_WRONLY)) == -1)
341 if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
342 write (fd, wu, sizeof (struct utmp));
348 /* ------------------------------------------------------------------------- */
350 * Update a BSD style wtmp entry
352 #if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
354 rxvt_update_wtmp (const char *fname, const struct utmp *putmp)
356 int fd, gotlock, retry;
357 struct flock lck; /* fcntl locking scheme */
360 if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
363 lck.l_whence = SEEK_END; /* start lock at current eof */
364 lck.l_len = 0; /* end at ``largest possible eof'' */
366 lck.l_type = F_WRLCK; /* we want a write lock */
368 /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
369 for (retry = 10, gotlock = 0; retry--;)
370 if (fcntl (fd, F_SETLK, &lck) != -1)
375 else if (errno != EAGAIN && errno != EACCES)
382 if (fstat (fd, &sbuf) == 0)
383 if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
384 ftruncate (fd, sbuf.st_size); /* remove bad writes */
386 lck.l_type = F_UNLCK; /* unlocking the file */
387 fcntl (fd, F_SETLK, &lck);
392 /* ------------------------------------------------------------------------- */
393 #ifdef LASTLOG_SUPPORT
395 rxvt_update_lastlog (const char *fname, const char *pty, const char *host)
397 # ifdef HAVE_STRUCT_LASTLOGX
400 # ifdef HAVE_STRUCT_LASTLOG
403 # ifdef LASTLOG_IS_DIR
404 char lastlogfile[256];
406 struct passwd *pwent;
409 # ifdef HAVE_STRUCT_LASTLOGX
410 memset (&llx, 0, sizeof (llx));
411 llx.ll_tv.tv_sec = time (NULL);
412 llx.ll_tv.tv_usec = 0;
413 strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
414 strncpy (llx.ll_host, host, sizeof (llx.ll_host));
415 updlastlogx (RXVT_LASTLOGX_FILE, getuid (), &llx);
418 # ifdef HAVE_STRUCT_LASTLOG
419 pwent = getpwuid (getuid ());
422 rxvt_warn ("no entry in password file, not updating lastlog.\n");
426 memset (&ll, 0, sizeof (ll));
427 ll.ll_time = time (NULL);
428 strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
429 strncpy (ll.ll_host, host, sizeof (ll.ll_host));
430 # ifdef LASTLOG_IS_DIR
431 sprintf (lastlogfile, "%.*s/%.*s",
432 sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2, fname,
433 sizeof (pwent->pw_name),
434 (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
436 if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
438 write (fd, &ll, sizeof (ll));
442 if ((fd = open (fname, O_RDWR)) != -1)
444 if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
446 write (fd, &ll, sizeof (ll));
449 # endif /* LASTLOG_IS_DIR */
450 # endif /* HAVE_STRUCT_LASTLOG */
452 #endif /* LASTLOG_SUPPORT */
453 /* ------------------------------------------------------------------------- */
455 #endif /* UTMP_SUPPORT */