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Comparing rxvt-unicode/src/logging.C (file contents):
Revision 1.38 by root, Sun Jan 22 04:01:52 2006 UTC vs.
Revision 1.47 by root, Sun May 3 21:48:53 2009 UTC

… …
16 * Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com> 16 * Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com>
17 * - extensive modifications 17 * - extensive modifications
18 * Copyright (c) 1999 D J Hawkey Jr <hawkeyd@visi.com> 18 * Copyright (c) 1999 D J Hawkey Jr <hawkeyd@visi.com>
19 * - lastlog support 19 * - lastlog support
20 * Copyright (c) 2004-2006 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>
21 * 22 *
22 * 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
23 * 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
24 * the Free Software Foundation; either version 2 of the License, or 25 * the Free Software Foundation; either version 2 of the License, or
25 * (at your option) any later version. 26 * (at your option) any later version.
… …
34 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 35 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
35 *----------------------------------------------------------------------*/ 36 *----------------------------------------------------------------------*/
36 37
37#include "../config.h" 38#include "../config.h"
38 39
40#include "ptytty.h"
41
42#if UTMP_SUPPORT
43
39#include <cstdio> 44#include <cstdio>
45#include <cstring>
40 46
41#include <sys/types.h> 47#include <sys/types.h>
42#include <sys/stat.h> 48#include <sys/stat.h>
43#include <sys/fcntl.h> 49#include <fcntl.h>
44#include <unistd.h> 50#include <unistd.h>
45#include <time.h> 51#include <time.h>
46 52#include <errno.h>
47#include "ptytty.h"
48
49#if UTMP_SUPPORT
50
51#if HAVE_STRUCT_UTMP
52static int write_bsd_utmp (int utmp_pos, struct utmp *wu);
53static void update_wtmp (const char *fname, const struct utmp *putmp);
54#endif
55
56static void update_lastlog (const char *fname, const char *pty, const char *host);
57 53
58/* 54/*
59 * BSD style utmp entry 55 * BSD style utmp entry
60 * ut_line, ut_name, ut_host, ut_time 56 * ut_line, ut_name, ut_host, ut_time
61 * SYSV style utmp (and utmpx) entry 57 * SYSV style utmp (and utmpx) entry
62 * 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
63 */ 59 */
64 60
65/* ------------------------------------------------------------------------- */ 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/* ------------------------------------------------------------------------- */
66 191
67/* 192/*
68 * make and write utmp and wtmp entries 193 * make and write utmp and wtmp entries
69 */ 194 */
70void 195void
… …
84#ifdef HAVE_STRUCT_UTMPX 209#ifdef HAVE_STRUCT_UTMPX
85 struct utmpx *utx = &this->utx; 210 struct utmpx *utx = &this->utx;
86#endif 211#endif
87 int i; 212 int i;
88 struct passwd *pwent = getpwuid (getuid ()); 213 struct passwd *pwent = getpwuid (getuid ());
214 const char *name = (pwent && pwent->pw_name) ? pwent->pw_name : "?";
89 215
90 if (!strncmp (pty, "/dev/", 5)) 216 if (!strncmp (pty, "/dev/", 5))
91 pty += 5; /* skip /dev/ prefix */ 217 pty += 5; /* skip /dev/ prefix */
92 218
93#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX) 219#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX)
94 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3)) 220 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3))
95 strncpy (ut_id, pty + 3, sizeof (ut_id)); 221 strncpy (ut_id, pty + 3, sizeof (ut_id));
96 else if (sscanf (pty, "pts/%d", &i) == 1) 222 else if (sscanf (pty, "pts/%d", &i) == 1)
97 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */ 223 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */
98 else if (strncmp (pty, "pty", 3) && strncmp (pty, "tty", 3)) 224 else
99 { 225 {
100 ptytty_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);
101 return; 227 return;
102 } 228 }
103#endif 229#endif
… …
107# ifdef HAVE_UTMP_PID 233# ifdef HAVE_UTMP_PID
108 setutent (); 234 setutent ();
109 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id)); 235 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
110 ut->ut_type = DEAD_PROCESS; 236 ut->ut_type = DEAD_PROCESS;
111 getutid (ut); /* position to entry in utmp file */ 237 getutid (ut); /* position to entry in utmp file */
112 strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
113# endif 238# endif
114#endif 239#endif
115 240
116#ifdef HAVE_STRUCT_UTMPX 241#ifdef HAVE_STRUCT_UTMPX
117 memset (utx, 0, sizeof (struct utmpx)); 242 memset (utx, 0, sizeof (struct utmpx));
118 setutxent (); 243 setutxent ();
119 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id)); 244 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
120 utx->ut_type = DEAD_PROCESS; 245 utx->ut_type = DEAD_PROCESS;
121 getutxid (utx); /* position to entry in utmp file */ 246 getutxid (utx); /* position to entry in utmp file */
122 strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
123#endif 247#endif
124 248
125#ifdef HAVE_STRUCT_UTMP 249#ifdef HAVE_STRUCT_UTMP
126 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
127 ut->ut_time = time (NULL); 254 ut->ut_time = time (NULL);
128# ifdef HAVE_UTMP_PID 255# ifdef HAVE_UTMP_PID
129 strncpy (ut->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", 256 strncpy (ut->ut_user, name, sizeof (ut->ut_user));
130 sizeof (ut->ut_user));
131 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id)); 257 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
132 ut->ut_time = time (NULL);
133 ut->ut_pid = cmd_pid; 258 ut->ut_pid = cmd_pid;
134# ifdef HAVE_UTMP_HOST
135 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
136# endif
137 ut->ut_type = USER_PROCESS; 259 ut->ut_type = USER_PROCESS;
138 pututline (ut); 260 pututline (ut);
139 endutent (); /* close the file */ 261 endutent (); /* close the file */
140 utmp_pos = 0; 262 utmp_pos = 0;
141# else 263# else
142 strncpy (ut->ut_name, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
143 sizeof (ut->ut_name));
144# ifdef HAVE_UTMP_HOST
145 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host)); 264 strncpy (ut->ut_name, name, sizeof (ut->ut_name));
146# endif
147# endif 265# endif
148#endif 266#endif
149 267
150#ifdef HAVE_STRUCT_UTMPX 268#ifdef HAVE_STRUCT_UTMPX
151 strncpy (utx->ut_line, pty, sizeof (utx->ut_line)); 269 strncpy (utx->ut_line, pty, sizeof (utx->ut_line));
152 strncpy (utx->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", 270 strncpy (utx->ut_user, name, sizeof (utx->ut_user));
153 sizeof (utx->ut_user));
154 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id)); 271 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
155# if HAVE_UTMPX_SESSION 272# if HAVE_UTMPX_SESSION
156 utx->ut_session = getsid (0); 273 utx->ut_session = getsid (0);
157# endif 274# endif
158 utx->ut_tv.tv_sec = time (NULL); 275 utx->ut_tv.tv_sec = time (NULL);
… …
175 utmp_pos = 0; 292 utmp_pos = 0;
176#endif 293#endif
177 294
178#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID) 295#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
179 { 296 {
180# ifdef HAVE_TTYSLOT 297# if 1
181 int fdstdin = dup (STDIN_FILENO); 298 int fdstdin = dup (STDIN_FILENO);
182 dup2 (tty, STDIN_FILENO); 299 dup2 (tty, STDIN_FILENO);
183 300
184 i = ttyslot (); 301 i = ttyslot ();
185 if (write_bsd_utmp (i, ut)) 302 if (write_bsd_utmp (i, ut))
186 utmp_pos = i; 303 utmp_pos = i;
187 304
188 dup2 (fdstdin, STDIN_FILENO); 305 dup2 (fdstdin, STDIN_FILENO);
189 close (fdstdin); 306 close (fdstdin);
190# else
191 FILE *fd0;
192
193 if ((fd0 = fopen (TTYTAB_FILENAME, "r")) != NULL)
194 {
195 char buf[256], name[256];
196
197 buf[sizeof (buf) - 1] = '\0';
198 for (i = 1; (fgets (buf, sizeof (buf) - 1, fd0) != NULL);)
199 {
200 if (*buf == '#' || sscanf (buf, "%s", name) != 1)
201 continue;
202 if (!strcmp (ut->ut_line, name))
203 {
204 if (!write_bsd_utmp (i, ut))
205 i = 0;
206 utmp_pos = i;
207 fclose (fd0);
208 break;
209 }
210 i++;
211 }
212 fclose (fd0);
213 }
214# endif 307# endif
215 } 308 }
216#endif 309#endif
217 310
218#ifdef WTMP_SUPPORT 311#ifdef WTMP_SUPPORT
… …
331#endif 424#endif
332 425
333 cmd_pid = 0; 426 cmd_pid = 0;
334} 427}
335 428
336/* ------------------------------------------------------------------------- */
337/*
338 * Write a BSD style utmp entry
339 */
340#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
341static int
342write_bsd_utmp (int utmp_pos, struct utmp *wu)
343{
344 int fd;
345
346 if (utmp_pos <= 0 || (fd = open (UTMP_FILE, O_WRONLY)) == -1)
347 return 0;
348
349 if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
350 write (fd, wu, sizeof (struct utmp));
351 close (fd);
352 return 1;
353}
354#endif
355
356/* ------------------------------------------------------------------------- */
357/*
358 * Update a BSD style wtmp entry
359 */
360#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
361static void
362update_wtmp (const char *fname, const struct utmp *putmp)
363{
364 int fd, gotlock, retry;
365 struct flock lck; /* fcntl locking scheme */
366 struct stat sbuf;
367
368 if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
369 return;
370
371 lck.l_whence = SEEK_END; /* start lock at current eof */
372 lck.l_len = 0; /* end at ``largest possible eof'' */
373 lck.l_start = 0;
374 lck.l_type = F_WRLCK; /* we want a write lock */
375
376 /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
377 for (retry = 10, gotlock = 0; retry--;)
378 if (fcntl (fd, F_SETLK, &lck) != -1)
379 {
380 gotlock = 1;
381 break;
382 }
383 else if (errno != EAGAIN && errno != EACCES)
384 break;
385 if (!gotlock)
386 { /* give it up */
387 close (fd);
388 return;
389 }
390 if (fstat (fd, &sbuf) == 0)
391 if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
392 ftruncate (fd, sbuf.st_size); /* remove bad writes */
393
394 lck.l_type = F_UNLCK; /* unlocking the file */
395 fcntl (fd, F_SETLK, &lck);
396 close (fd);
397}
398#endif
399
400/* ------------------------------------------------------------------------- */
401#ifdef LASTLOG_SUPPORT
402static void
403update_lastlog (const char *fname, const char *pty, const char *host)
404{
405# ifdef HAVE_STRUCT_LASTLOGX
406 struct lastlogx llx;
407# endif
408# ifdef HAVE_STRUCT_LASTLOG
409 int fd;
410 struct lastlog ll;
411# ifdef LASTLOG_IS_DIR
412 char lastlogfile[256];
413# endif
414 struct passwd *pwent;
415# endif
416
417# ifdef HAVE_STRUCT_LASTLOGX
418 memset (&llx, 0, sizeof (llx));
419 llx.ll_tv.tv_sec = time (NULL);
420 llx.ll_tv.tv_usec = 0;
421 strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
422 strncpy (llx.ll_host, host, sizeof (llx.ll_host));
423 updlastlogx (LASTLOGX_FILE, getuid (), &llx);
424# endif
425
426# ifdef HAVE_STRUCT_LASTLOG
427 pwent = getpwuid (getuid ());
428 if (!pwent)
429 {
430 ptytty_warn ("no entry in password file, not updating lastlog.\n");
431 return;
432 }
433
434 memset (&ll, 0, sizeof (ll));
435 ll.ll_time = time (NULL);
436 strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
437 strncpy (ll.ll_host, host, sizeof (ll.ll_host));
438# ifdef LASTLOG_IS_DIR
439 sprintf (lastlogfile, "%.*s/%.*s",
440 sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2, fname,
441 sizeof (pwent->pw_name),
442 (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
443 : pwent->pw_name);
444 if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
445 {
446 write (fd, &ll, sizeof (ll));
447 close (fd);
448 }
449# else
450 if ((fd = open (fname, O_RDWR)) != -1)
451 {
452 if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
453 SEEK_SET) != -1)
454 write (fd, &ll, sizeof (ll));
455 close (fd);
456 }
457# endif /* LASTLOG_IS_DIR */
458# endif /* HAVE_STRUCT_LASTLOG */
459}
460#endif /* LASTLOG_SUPPORT */
461
462#else 429#else
463void 430void
464ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname) 431ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
465{ 432{
466} 433}

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