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Comparing rxvt-unicode/src/logging.C (file contents):
Revision 1.27 by root, Tue Jan 17 10:14:26 2006 UTC vs.
Revision 1.47 by root, Sun May 3 21:48:53 2009 UTC

1// This file is part of libptytty. Do not make local modifications.
2// http://software.schmorp.de/pkg/libptytty
3
1/*--------------------------------*-C-*---------------------------------* 4/*----------------------------------------------------------------------*
2 * File: logging.C 5 * File: logging.C
3 *----------------------------------------------------------------------* 6 *----------------------------------------------------------------------*
4 * 7 *
5 * All portions of code are copyright by their respective author/s. 8 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 1992 John Bovey <jdb@ukc.ac.uk> 9 * Copyright (c) 1992 John Bovey <jdb@ukc.ac.uk>
… …
12 * Copyright (c) 1997 Raul Garcia Garcia <rgg@tid.es> 15 * Copyright (c) 1997 Raul Garcia Garcia <rgg@tid.es>
13 * Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com> 16 * Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com>
14 * - extensive modifications 17 * - extensive modifications
15 * Copyright (c) 1999 D J Hawkey Jr <hawkeyd@visi.com> 18 * Copyright (c) 1999 D J Hawkey Jr <hawkeyd@visi.com>
16 * - lastlog support 19 * - lastlog support
17 * Copyright (c) 2004 Marc Lehmann <pcg@goof.com> 20 * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com>
21 * Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it>
18 * 22 *
19 * This program is free software; you can redistribute it and/or modify 23 * 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 24 * 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 25 * the Free Software Foundation; either version 2 of the License, or
22 * (at your option) any later version. 26 * (at your option) any later version.
… …
30 * along with this program; if not, write to the Free Software 34 * along with this program; if not, write to the Free Software
31 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 35 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
32 *----------------------------------------------------------------------*/ 36 *----------------------------------------------------------------------*/
33 37
34#include "../config.h" 38#include "../config.h"
35#include "rxvt.h" 39
36#include "ptytty.h" 40#include "ptytty.h"
37 41
38#if UTMP_SUPPORT 42#if UTMP_SUPPORT
39 43
40#if HAVE_STRUCT_UTMP 44#include <cstdio>
41static int rxvt_write_bsd_utmp (int utmp_pos, struct utmp *wu); 45#include <cstring>
42static void rxvt_update_wtmp (const char *fname, const struct utmp *putmp);
43#endif
44 46
45static void rxvt_update_lastlog (const char *fname, const char *pty, const char *host); 47#include <sys/types.h>
48#include <sys/stat.h>
49#include <fcntl.h>
50#include <unistd.h>
51#include <time.h>
52#include <errno.h>
46 53
47/* 54/*
48 * BSD style utmp entry 55 * BSD style utmp entry
49 * ut_line, ut_name, ut_host, ut_time 56 * ut_line, ut_name, ut_host, ut_time
50 * SYSV style utmp (and utmpx) entry 57 * SYSV style utmp (and utmpx) entry
51 * ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time 58 * ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time
52 */ 59 */
53 60
54/* ------------------------------------------------------------------------- */ 61/* ------------------------------------------------------------------------- */
62/*
63 * Write a BSD style utmp entry
64 */
65#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
66static int
67write_bsd_utmp (int utmp_pos, struct utmp *wu)
68{
69 int fd;
70
71 if (utmp_pos <= 0 || (fd = open (UTMP_FILE, O_WRONLY)) == -1)
72 return 0;
73
74 if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
75 write (fd, wu, sizeof (struct utmp));
76 close (fd);
77 return 1;
78}
79#endif
80
81/* ------------------------------------------------------------------------- */
82/*
83 * Update a BSD style wtmp entry
84 */
85#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
86static void
87update_wtmp (const char *fname, const struct utmp *putmp)
88{
89 int fd, gotlock, retry;
90 struct flock lck; /* fcntl locking scheme */
91 struct stat sbuf;
92
93 if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
94 return;
95
96 lck.l_whence = SEEK_END; /* start lock at current eof */
97 lck.l_len = 0; /* end at ``largest possible eof'' */
98 lck.l_start = 0;
99 lck.l_type = F_WRLCK; /* we want a write lock */
100
101 /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
102 for (retry = 10, gotlock = 0; retry--;)
103 if (fcntl (fd, F_SETLK, &lck) != -1)
104 {
105 gotlock = 1;
106 break;
107 }
108 else if (errno != EAGAIN && errno != EACCES)
109 break;
110 if (!gotlock)
111 {
112 /* give it up */
113 close (fd);
114 return;
115 }
116 if (fstat (fd, &sbuf) == 0)
117 if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
118 ftruncate (fd, sbuf.st_size); /* remove bad writes */
119
120 lck.l_type = F_UNLCK; /* unlocking the file */
121 fcntl (fd, F_SETLK, &lck);
122 close (fd);
123}
124#endif
125
126/* ------------------------------------------------------------------------- */
127#ifdef LASTLOG_SUPPORT
128static void
129update_lastlog (const char *fname, const char *pty, const char *host)
130{
131# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
132 struct lastlogx llx;
133# endif
134# ifdef HAVE_STRUCT_LASTLOG
135 int fd;
136 struct lastlog ll;
137 char lastlogfile[256];
138 struct passwd *pwent;
139 struct stat st;
140# endif
141
142# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
143 memset (&llx, 0, sizeof (llx));
144 llx.ll_tv.tv_sec = time (NULL);
145 llx.ll_tv.tv_usec = 0;
146 strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
147 strncpy (llx.ll_host, host, sizeof (llx.ll_host));
148 updlastlogx (LASTLOGX_FILE, getuid (), &llx);
149# endif
150
151# ifdef HAVE_STRUCT_LASTLOG
152 pwent = getpwuid (getuid ());
153 if (!pwent)
154 {
155 ptytty_warn ("no entry in password file, not updating lastlog.\n", 0);
156 return;
157 }
158
159 memset (&ll, 0, sizeof (ll));
160 ll.ll_time = time (NULL);
161 strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
162 strncpy (ll.ll_host, host, sizeof (ll.ll_host));
163 if (stat (fname, &st) != 0)
164 return;
165 if (S_ISDIR (st.st_mode))
166 {
167 sprintf (lastlogfile, "%.*s/%.*s",
168 (int)(sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2), fname,
169 (int)sizeof (pwent->pw_name),
170 (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
171 : pwent->pw_name);
172 if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
173 {
174 write (fd, &ll, sizeof (ll));
175 close (fd);
176 }
177 }
178 else if (S_ISREG (st.st_mode))
179 if ((fd = open (fname, O_RDWR)) != -1)
180 {
181 if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
182 SEEK_SET) != -1)
183 write (fd, &ll, sizeof (ll));
184 close (fd);
185 }
186# endif /* HAVE_STRUCT_LASTLOG */
187}
188#endif /* LASTLOG_SUPPORT */
189
190/* ------------------------------------------------------------------------- */
55 191
56/* 192/*
57 * make and write utmp and wtmp entries 193 * make and write utmp and wtmp entries
58 */ 194 */
59void 195void
60rxvt_ptytty::login (int cmd_pid, bool login_shell, const char *hostname) 196ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
61{ 197{
198 const char *pty = name;
199
200 if (!pty || !*pty)
201 return;
202
62 this->cmd_pid = cmd_pid; 203 this->cmd_pid = cmd_pid;
63 this->login_shell = login_shell; 204 this->login_shell = login_shell;
64 205
65 const char *pty = name;
66
67#ifdef HAVE_STRUCT_UTMP 206#ifdef HAVE_STRUCT_UTMP
68 struct utmp *ut = &this->ut; 207 struct utmp *ut = &this->ut;
69#endif 208#endif
70#ifdef HAVE_STRUCT_UTMPX 209#ifdef HAVE_STRUCT_UTMPX
71 struct utmpx *utx = &this->utx; 210 struct utmpx *utx = &this->utx;
72#endif 211#endif
73 int i; 212 int i;
74 struct passwd *pwent = getpwuid (getuid ()); 213 struct passwd *pwent = getpwuid (getuid ());
214 const char *name = (pwent && pwent->pw_name) ? pwent->pw_name : "?";
75 215
76 if (!strncmp (pty, "/dev/", 5)) 216 if (!strncmp (pty, "/dev/", 5))
77 pty += 5; /* skip /dev/ prefix */ 217 pty += 5; /* skip /dev/ prefix */
78 218
79#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX) 219#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX)
80 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3)) 220 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3))
81 strncpy (ut_id, pty + 3, sizeof (ut_id)); 221 strncpy (ut_id, pty + 3, sizeof (ut_id));
82 else if (sscanf (pty, "pts/%d", &i) == 1) 222 else if (sscanf (pty, "pts/%d", &i) == 1)
83 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */ 223 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */
84 else if (strncmp (pty, "pty", 3) && strncmp (pty, "tty", 3)) 224 else
85 { 225 {
86 rxvt_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty); 226 ptytty_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty);
87 return; 227 return;
88 } 228 }
89#endif 229#endif
90 230
91#ifdef HAVE_STRUCT_UTMP 231#ifdef HAVE_STRUCT_UTMP
… …
93# ifdef HAVE_UTMP_PID 233# ifdef HAVE_UTMP_PID
94 setutent (); 234 setutent ();
95 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id)); 235 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
96 ut->ut_type = DEAD_PROCESS; 236 ut->ut_type = DEAD_PROCESS;
97 getutid (ut); /* position to entry in utmp file */ 237 getutid (ut); /* position to entry in utmp file */
98 strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
99# endif 238# endif
100#endif 239#endif
101 240
102#ifdef HAVE_STRUCT_UTMPX 241#ifdef HAVE_STRUCT_UTMPX
103 memset (utx, 0, sizeof (struct utmpx)); 242 memset (utx, 0, sizeof (struct utmpx));
104 setutxent (); 243 setutxent ();
105 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id)); 244 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
106 utx->ut_type = DEAD_PROCESS; 245 utx->ut_type = DEAD_PROCESS;
107 getutxid (utx); /* position to entry in utmp file */ 246 getutxid (utx); /* position to entry in utmp file */
108 strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
109#endif 247#endif
110 248
111#ifdef HAVE_STRUCT_UTMP 249#ifdef HAVE_STRUCT_UTMP
112 strncpy (ut->ut_line, pty, sizeof (ut->ut_line)); 250 strncpy (ut->ut_line, pty, sizeof (ut->ut_line));
251# ifdef HAVE_UTMP_HOST
252 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
253# endif
113 ut->ut_time = time (NULL); 254 ut->ut_time = time (NULL);
114# ifdef HAVE_UTMP_PID 255# ifdef HAVE_UTMP_PID
115 strncpy (ut->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", 256 strncpy (ut->ut_user, name, sizeof (ut->ut_user));
116 sizeof (ut->ut_user));
117 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id)); 257 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
118 ut->ut_time = time (NULL);
119 ut->ut_pid = cmd_pid; 258 ut->ut_pid = cmd_pid;
120# ifdef HAVE_UTMP_HOST
121 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
122# endif
123 ut->ut_type = USER_PROCESS; 259 ut->ut_type = USER_PROCESS;
124 pututline (ut); 260 pututline (ut);
125 endutent (); /* close the file */ 261 endutent (); /* close the file */
126 utmp_pos = 0; 262 utmp_pos = 0;
127# else 263# else
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)); 264 strncpy (ut->ut_name, name, sizeof (ut->ut_name));
132# endif
133# endif 265# endif
134#endif 266#endif
135 267
136#ifdef HAVE_STRUCT_UTMPX 268#ifdef HAVE_STRUCT_UTMPX
137 strncpy (utx->ut_line, pty, sizeof (utx->ut_line)); 269 strncpy (utx->ut_line, pty, sizeof (utx->ut_line));
138 strncpy (utx->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", 270 strncpy (utx->ut_user, name, sizeof (utx->ut_user));
139 sizeof (utx->ut_user));
140 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id)); 271 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
141# if HAVE_UTMPX_SESSION 272# if HAVE_UTMPX_SESSION
142 utx->ut_session = getsid (0); 273 utx->ut_session = getsid (0);
143# endif 274# endif
144 utx->ut_tv.tv_sec = time (NULL); 275 utx->ut_tv.tv_sec = time (NULL);
… …
160 endutxent (); /* close the file */ 291 endutxent (); /* close the file */
161 utmp_pos = 0; 292 utmp_pos = 0;
162#endif 293#endif
163 294
164#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID) 295#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
165
166 { 296 {
167# ifdef HAVE_TTYSLOT 297# if 1
298 int fdstdin = dup (STDIN_FILENO);
299 dup2 (tty, STDIN_FILENO);
300
168 i = ttyslot (); 301 i = ttyslot ();
169 if (rxvt_write_bsd_utmp (i, ut)) 302 if (write_bsd_utmp (i, ut))
170 utmp_pos = i; 303 utmp_pos = i;
171# else
172 FILE *fd0;
173 304
174 if ((fd0 = fopen (TTYTAB_FILENAME, "r")) != NULL) 305 dup2 (fdstdin, STDIN_FILENO);
175 { 306 close (fdstdin);
176 char buf[256], name[256];
177
178 buf[sizeof (buf) - 1] = '\0';
179 for (i = 1; (fgets (buf, sizeof (buf) - 1, fd0) != NULL);)
180 {
181 if (*buf == '#' || sscanf (buf, "%s", name) != 1)
182 continue;
183 if (!strcmp (ut->ut_line, name))
184 {
185 if (!rxvt_write_bsd_utmp (i, ut))
186 i = 0;
187 utmp_pos = i;
188 fclose (fd0);
189 break;
190 }
191 i++;
192 }
193 fclose (fd0);
194 }
195# endif 307# endif
196 } 308 }
197#endif 309#endif
198 310
199#ifdef WTMP_SUPPORT 311#ifdef WTMP_SUPPORT
200# ifdef WTMP_ONLY_ON_LOGIN 312#ifdef LOG_ONLY_ON_LOGIN
201 if (login_shell) 313 if (login_shell)
202# endif 314#endif
203 { 315 {
204# ifdef HAVE_STRUCT_UTMP 316# ifdef HAVE_STRUCT_UTMP
205# ifdef HAVE_UPDWTMP 317# ifdef HAVE_UPDWTMP
206 updwtmp (RXVT_WTMP_FILE, ut); 318 updwtmp (WTMP_FILE, ut);
207# else 319# else
208 rxvt_update_wtmp (RXVT_WTMP_FILE, ut); 320 update_wtmp (WTMP_FILE, ut);
209# endif 321# endif
210# endif 322# endif
211# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX) 323# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
212 updwtmpx (RXVT_WTMPX_FILE, utx); 324 updwtmpx (WTMPX_FILE, utx);
213# endif
214 }
215#endif 325# endif
326 }
327#endif
216#if defined(LASTLOG_SUPPORT) && defined(RXVT_LASTLOG_FILE) 328#if defined(LASTLOG_SUPPORT) && defined(LASTLOG_FILE)
329#ifdef LOG_ONLY_ON_LOGIN
217 if (login_shell) 330 if (login_shell)
331#endif
218 rxvt_update_lastlog (RXVT_LASTLOG_FILE, pty, hostname); 332 update_lastlog (LASTLOG_FILE, pty, hostname);
219#endif 333#endif
220} 334}
221 335
222/* ------------------------------------------------------------------------- */ 336/* ------------------------------------------------------------------------- */
223/* 337/*
224 * remove utmp and wtmp entries 338 * remove utmp and wtmp entries
225 */ 339 */
226void 340void
227rxvt_ptytty::logout () 341ptytty_unix::logout ()
228{ 342{
343 if (!cmd_pid)
344 return;
345
229#ifdef HAVE_STRUCT_UTMP 346#ifdef HAVE_STRUCT_UTMP
230 struct utmp *tmput, *ut = &this->ut; 347 struct utmp *tmput, *ut = &this->ut;
231#endif 348#endif
232#ifdef HAVE_STRUCT_UTMPX 349#ifdef HAVE_STRUCT_UTMPX
233 struct utmpx *tmputx, *utx = &this->utx; 350 struct utmpx *tmputx, *utx = &this->utx;
… …
268 385
269 /* 386 /*
270 * Write ending wtmp entry 387 * Write ending wtmp entry
271 */ 388 */
272#ifdef WTMP_SUPPORT 389#ifdef WTMP_SUPPORT
273# ifdef WTMP_ONLY_ON_LOGIN 390#ifdef LOG_ONLY_ON_LOGIN
274 if (login_shell) 391 if (login_shell)
275# endif 392#endif
276 { 393 {
277# ifdef HAVE_STRUCT_UTMP 394# ifdef HAVE_STRUCT_UTMP
278# ifdef HAVE_UPDWTMP 395# ifdef HAVE_UPDWTMP
279 updwtmp (RXVT_WTMP_FILE, ut); 396 updwtmp (WTMP_FILE, ut);
280# else 397# else
281 rxvt_update_wtmp (RXVT_WTMP_FILE, ut); 398 update_wtmp (WTMP_FILE, ut);
282# endif 399# endif
283# endif 400# endif
284# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX) 401# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
285 updwtmpx (RXVT_WTMPX_FILE, utx); 402 updwtmpx (WTMPX_FILE, utx);
286# endif 403# endif
287 } 404 }
288#endif 405#endif
289 406
290 /* 407 /*
… …
295 if (ut->ut_pid == cmd_pid) 412 if (ut->ut_pid == cmd_pid)
296 pututline (ut); 413 pututline (ut);
297 endutent (); 414 endutent ();
298# else 415# else
299 memset (ut, 0, sizeof (struct utmp)); 416 memset (ut, 0, sizeof (struct utmp));
300 rxvt_write_bsd_utmp (utmp_pos, ut); 417 write_bsd_utmp (utmp_pos, ut);
301# endif 418# endif
302#endif 419#endif
303#ifdef HAVE_STRUCT_UTMPX 420#ifdef HAVE_STRUCT_UTMPX
304 if (utx->ut_pid == cmd_pid) 421 if (utx->ut_pid == cmd_pid)
305 pututxline (utx); 422 pututxline (utx);
306 endutxent (); 423 endutxent ();
307#endif 424#endif
308}
309 425
310/* ------------------------------------------------------------------------- */ 426 cmd_pid = 0;
311/*
312 * Write a BSD style utmp entry
313 */
314#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
315static int
316rxvt_write_bsd_utmp (int utmp_pos, struct utmp *wu)
317{
318 int fd;
319
320 if (utmp_pos <= 0 || (fd = open (RXVT_UTMP_FILE, O_WRONLY)) == -1)
321 return 0;
322
323 if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
324 write (fd, wu, sizeof (struct utmp));
325 close (fd);
326 return 1;
327} 427}
328#endif
329 428
330/* ------------------------------------------------------------------------- */ 429#else
331/* 430void
332 * Update a BSD style wtmp entry 431ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
333 */
334#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
335static void
336rxvt_update_wtmp (const char *fname, const struct utmp *putmp)
337{ 432{
338 int fd, gotlock, retry;
339 struct flock lck; /* fcntl locking scheme */
340 struct stat sbuf;
341
342 if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
343 return;
344
345 lck.l_whence = SEEK_END; /* start lock at current eof */
346 lck.l_len = 0; /* end at ``largest possible eof'' */
347 lck.l_start = 0;
348 lck.l_type = F_WRLCK; /* we want a write lock */
349
350 /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
351 for (retry = 10, gotlock = 0; retry--;)
352 if (fcntl (fd, F_SETLK, &lck) != -1)
353 {
354 gotlock = 1;
355 break;
356 }
357 else if (errno != EAGAIN && errno != EACCES)
358 break;
359 if (!gotlock)
360 { /* give it up */
361 close (fd);
362 return;
363 }
364 if (fstat (fd, &sbuf) == 0)
365 if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
366 ftruncate (fd, sbuf.st_size); /* remove bad writes */
367
368 lck.l_type = F_UNLCK; /* unlocking the file */
369 fcntl (fd, F_SETLK, &lck);
370 close (fd);
371} 433}
372#endif
373
374/* ------------------------------------------------------------------------- */
375#ifdef LASTLOG_SUPPORT
376static void
377rxvt_update_lastlog (const char *fname, const char *pty, const char *host)
378{
379# ifdef HAVE_STRUCT_LASTLOGX
380 struct lastlogx llx;
381# endif 434#endif
382# ifdef HAVE_STRUCT_LASTLOG
383 int fd;
384 struct lastlog ll;
385# ifdef LASTLOG_IS_DIR
386 char lastlogfile[256];
387# endif
388 struct passwd *pwent;
389# endif
390 435
391# ifdef HAVE_STRUCT_LASTLOGX
392 memset (&llx, 0, sizeof (llx));
393 llx.ll_tv.tv_sec = time (NULL);
394 llx.ll_tv.tv_usec = 0;
395 strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
396 strncpy (llx.ll_host, host, sizeof (llx.ll_host));
397 updlastlogx (RXVT_LASTLOGX_FILE, getuid (), &llx);
398# endif
399
400# ifdef HAVE_STRUCT_LASTLOG
401 pwent = getpwuid (getuid ());
402 if (!pwent)
403 {
404 rxvt_warn ("no entry in password file, not updating lastlog.\n");
405 return;
406 }
407
408 memset (&ll, 0, sizeof (ll));
409 ll.ll_time = time (NULL);
410 strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
411 strncpy (ll.ll_host, host, sizeof (ll.ll_host));
412# ifdef LASTLOG_IS_DIR
413 sprintf (lastlogfile, "%.*s/%.*s",
414 sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2, fname,
415 sizeof (pwent->pw_name),
416 (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
417 : pwent->pw_name);
418 if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
419 {
420 write (fd, &ll, sizeof (ll));
421 close (fd);
422 }
423# else
424 if ((fd = open (fname, O_RDWR)) != -1)
425 {
426 if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
427 SEEK_SET) != -1)
428 write (fd, &ll, sizeof (ll));
429 close (fd);
430 }
431# endif /* LASTLOG_IS_DIR */
432# endif /* HAVE_STRUCT_LASTLOG */
433}
434#endif /* LASTLOG_SUPPORT */
435/* ------------------------------------------------------------------------- */
436
437#endif /* UTMP_SUPPORT */

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