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1d7b9b20 | 1 | /* |
2 | * Copyright (c) 2000 Andre Lucas. All rights reserved. | |
564dd50a | 3 | * Portions copyright (c) 1998 Todd C. Miller |
4 | * Portions copyright (c) 1996 Jason Downs | |
5 | * Portions copyright (c) 1996 Theo de Raadt | |
1d7b9b20 | 6 | * |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * 3. All advertising materials mentioning features or use of this software | |
16 | * must display the following acknowledgement: | |
17 | * This product includes software developed by Markus Friedl. | |
18 | * 4. The name of the author may not be used to endorse or promote products | |
19 | * derived from this software without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
22 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
23 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
24 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
26 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
30 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
31 | */ | |
32 | ||
2b87da3b | 33 | /** |
1d7b9b20 | 34 | ** loginrec.c: platform-independent login recording and lastlog retrieval |
35 | **/ | |
36 | ||
564dd50a | 37 | /* |
38 | The new login code explained | |
39 | ============================ | |
40 | ||
41 | This code attempts to provide a common interface to login recording | |
42 | (utmp and friends) and last login time retrieval. | |
43 | ||
44 | Its primary means of achieving this is to use 'struct logininfo', a | |
45 | union of all the useful fields in the various different types of | |
46 | system login record structures one finds on UNIX variants. | |
47 | ||
48 | We depend on autoconf to define which recording methods are to be | |
49 | used, and which fields are contained in the relevant data structures | |
50 | on the local system. Many C preprocessor symbols affect which code | |
51 | gets compiled here. | |
52 | ||
53 | The code is designed to make it easy to modify a particular | |
54 | recording method, without affecting other methods nor requiring so | |
55 | many nested conditional compilation blocks as were commonplace in | |
56 | the old code. | |
57 | ||
58 | For login recording, we try to use the local system's libraries as | |
59 | these are clearly most likely to work correctly. For utmp systems | |
60 | this usually means login() and logout() or setutent() etc., probably | |
61 | in libutil, along with logwtmp() etc. On these systems, we fall back | |
62 | to writing the files directly if we have to, though this method | |
63 | requires very thorough testing so we do not corrupt local auditing | |
64 | information. These files and their access methods are very system | |
65 | specific indeed. | |
2b87da3b | 66 | |
564dd50a | 67 | For utmpx systems, the corresponding library functions are |
68 | setutxent() etc. To the author's knowledge, all utmpx systems have | |
69 | these library functions and so no direct write is attempted. If such | |
70 | a system exists and needs support, direct analogues of the [uw]tmp | |
71 | code should suffice. | |
72 | ||
73 | Retrieving the time of last login ('lastlog') is in some ways even | |
74 | more problemmatic than login recording. Some systems provide a | |
75 | simple table of all users which we seek based on uid and retrieve a | |
76 | relatively standard structure. Others record the same information in | |
77 | a directory with a separate file, and others don't record the | |
78 | information separately at all. For systems in the latter category, | |
79 | we look backwards in the wtmp or wtmpx file for the last login entry | |
80 | for our user. Naturally this is slower and on busy systems could | |
81 | incur a significant performance penalty. | |
82 | ||
83 | Calling the new code | |
84 | -------------------- | |
2b87da3b | 85 | |
564dd50a | 86 | In OpenSSH all login recording and retrieval is performed in |
87 | login.c. Here you'll find working examples. Also, in the logintest.c | |
88 | program there are more examples. | |
89 | ||
90 | Internal handler calling method | |
91 | ------------------------------- | |
2b87da3b | 92 | |
564dd50a | 93 | When a call is made to login_login() or login_logout(), both |
94 | routines set a struct logininfo flag defining which action (log in, | |
95 | or log out) is to be taken. They both then call login_write(), which | |
96 | calls whichever of the many structure-specific handlers autoconf | |
97 | selects for the local system. | |
98 | ||
99 | The handlers themselves handle system data structure specifics. Both | |
100 | struct utmp and struct utmpx have utility functions (see | |
101 | construct_utmp*()) to try to make it simpler to add extra systems | |
102 | that introduce new features to either structure. | |
103 | ||
104 | While it may seem terribly wasteful to replicate so much similar | |
105 | code for each method, experience has shown that maintaining code to | |
106 | write both struct utmp and utmpx in one function, whilst maintaining | |
107 | support for all systems whether they have library support or not, is | |
108 | a difficult and time-consuming task. | |
109 | ||
110 | Lastlog support proceeds similarly. Functions login_get_lastlog() | |
111 | (and its OpenSSH-tuned friend login_get_lastlog_time()) call | |
112 | getlast_entry(), which tries one of three methods to find the last | |
113 | login time. It uses local system lastlog support if it can, | |
114 | otherwise it tries wtmp or wtmpx before giving up and returning 0, | |
115 | meaning "tilt". | |
116 | ||
117 | Maintenance | |
118 | ----------- | |
119 | ||
120 | In many cases it's possible to tweak autoconf to select the correct | |
121 | methods for a particular platform, either by improving the detection | |
122 | code (best), or by presetting DISABLE_<method> or CONF_<method>_FILE | |
123 | symbols for the platform. | |
124 | ||
125 | Use logintest to check which symbols are defined before modifying | |
126 | configure.in and loginrec.c. (You have to build logintest yourself | |
127 | with 'make logintest' as it's not built by default.) | |
128 | ||
129 | Otherwise, patches to the specific method(s) are very helpful! | |
2b87da3b | 130 | |
564dd50a | 131 | */ |
132 | ||
1d7b9b20 | 133 | /** |
134 | ** TODO: | |
698d107e | 135 | ** homegrown ttyslot() |
564dd50a | 136 | ** test, test, test |
1d7b9b20 | 137 | ** |
138 | ** Platform status: | |
139 | ** ---------------- | |
140 | ** | |
141 | ** Known good: | |
698d107e | 142 | ** Linux (Redhat 6.2, Debian) |
143 | ** Solaris | |
1d7b9b20 | 144 | ** HP-UX 10.20 (gcc only) |
5abcdf8e | 145 | ** IRIX |
44d5f7f7 | 146 | ** NeXT - M68k/HPPA/Sparc (4.2/3.3) |
1d7b9b20 | 147 | ** |
148 | ** Testing required: Please send reports! | |
1d7b9b20 | 149 | ** NetBSD |
150 | ** HP-UX 11 | |
a3cef3ca | 151 | ** AIX |
1d7b9b20 | 152 | ** |
153 | ** Platforms with known problems: | |
698d107e | 154 | ** Some variants of Slackware Linux |
1d7b9b20 | 155 | ** |
156 | **/ | |
157 | ||
158 | #include "includes.h" | |
159 | ||
1d7b9b20 | 160 | #include "ssh.h" |
161 | #include "xmalloc.h" | |
162 | #include "loginrec.h" | |
42f11eb2 | 163 | #include "log.h" |
164 | #include "atomicio.h" | |
1d7b9b20 | 165 | |
166 | RCSID("$Id$"); | |
167 | ||
44d5f7f7 | 168 | #ifdef HAVE_UTIL_H |
169 | # include <util.h> | |
170 | #endif | |
171 | ||
8f523d67 | 172 | #ifdef HAVE_LIBUTIL_H |
173 | # include <libutil.h> | |
174 | #endif | |
175 | ||
1d7b9b20 | 176 | /** |
177 | ** prototypes for helper functions in this file | |
178 | **/ | |
179 | ||
180 | #if HAVE_UTMP_H | |
1d7b9b20 | 181 | void set_utmp_time(struct logininfo *li, struct utmp *ut); |
182 | void construct_utmp(struct logininfo *li, struct utmp *ut); | |
183 | #endif | |
184 | ||
185 | #ifdef HAVE_UTMPX_H | |
1d7b9b20 | 186 | void set_utmpx_time(struct logininfo *li, struct utmpx *ut); |
187 | void construct_utmpx(struct logininfo *li, struct utmpx *ut); | |
188 | #endif | |
189 | ||
190 | int utmp_write_entry(struct logininfo *li); | |
191 | int utmpx_write_entry(struct logininfo *li); | |
192 | int wtmp_write_entry(struct logininfo *li); | |
193 | int wtmpx_write_entry(struct logininfo *li); | |
194 | int lastlog_write_entry(struct logininfo *li); | |
195 | int syslogin_write_entry(struct logininfo *li); | |
196 | ||
197 | int getlast_entry(struct logininfo *li); | |
198 | int lastlog_get_entry(struct logininfo *li); | |
199 | int wtmp_get_entry(struct logininfo *li); | |
200 | int wtmpx_get_entry(struct logininfo *li); | |
201 | ||
5abcdf8e | 202 | /* pick the shortest string */ |
203 | #define MIN_SIZEOF(s1,s2) ( sizeof(s1) < sizeof(s2) ? sizeof(s1) : sizeof(s2) ) | |
204 | ||
1d7b9b20 | 205 | /** |
206 | ** platform-independent login functions | |
207 | **/ | |
208 | ||
5abcdf8e | 209 | /* login_login(struct logininfo *) -Record a login |
2b87da3b | 210 | * |
5abcdf8e | 211 | * Call with a pointer to a struct logininfo initialised with |
212 | * login_init_entry() or login_alloc_entry() | |
213 | * | |
214 | * Returns: | |
215 | * >0 if successful | |
216 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) | |
217 | */ | |
564dd50a | 218 | int |
219 | login_login (struct logininfo *li) | |
220 | { | |
221 | li->type = LTYPE_LOGIN; | |
222 | return login_write(li); | |
223 | } | |
1d7b9b20 | 224 | |
225 | ||
5abcdf8e | 226 | /* login_logout(struct logininfo *) - Record a logout |
227 | * | |
228 | * Call as with login_login() | |
229 | * | |
230 | * Returns: | |
231 | * >0 if successful | |
232 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) | |
233 | */ | |
564dd50a | 234 | int |
235 | login_logout(struct logininfo *li) | |
236 | { | |
237 | li->type = LTYPE_LOGOUT; | |
238 | return login_write(li); | |
1d7b9b20 | 239 | } |
240 | ||
5abcdf8e | 241 | /* login_get_lastlog_time(int) - Retrieve the last login time |
242 | * | |
243 | * Retrieve the last login time for the given uid. Will try to use the | |
244 | * system lastlog facilities if they are available, but will fall back | |
245 | * to looking in wtmp/wtmpx if necessary | |
246 | * | |
247 | * Returns: | |
248 | * 0 on failure, or if user has never logged in | |
249 | * Time in seconds from the epoch if successful | |
250 | * | |
251 | * Useful preprocessor symbols: | |
252 | * DISABLE_LASTLOG: If set, *never* even try to retrieve lastlog | |
253 | * info | |
254 | * USE_LASTLOG: If set, indicates the presence of system lastlog | |
255 | * facilities. If this and DISABLE_LASTLOG are not set, | |
256 | * try to retrieve lastlog information from wtmp/wtmpx. | |
257 | */ | |
564dd50a | 258 | unsigned int |
259 | login_get_lastlog_time(const int uid) | |
260 | { | |
261 | struct logininfo li; | |
1d7b9b20 | 262 | |
5abcdf8e | 263 | if (login_get_lastlog(&li, uid)) |
264 | return li.tv_sec; | |
265 | else | |
266 | return 0; | |
564dd50a | 267 | } |
1d7b9b20 | 268 | |
5abcdf8e | 269 | /* login_get_lastlog(struct logininfo *, int) - Retrieve a lastlog entry |
270 | * | |
271 | * Retrieve a logininfo structure populated (only partially) with | |
272 | * information from the system lastlog data, or from wtmp/wtmpx if no | |
273 | * system lastlog information exists. | |
274 | * | |
275 | * Note this routine must be given a pre-allocated logininfo. | |
276 | * | |
277 | * Returns: | |
278 | * >0: A pointer to your struct logininfo if successful | |
279 | * 0 on failure (will use OpenSSH's logging facilities for diagnostics) | |
280 | * | |
281 | */ | |
564dd50a | 282 | struct logininfo * |
283 | login_get_lastlog(struct logininfo *li, const int uid) | |
284 | { | |
5abcdf8e | 285 | struct passwd *pw; |
5abcdf8e | 286 | |
dbaa2e87 | 287 | memset(li, '\0', sizeof(*li)); |
1d7b9b20 | 288 | li->uid = uid; |
5abcdf8e | 289 | |
2b87da3b | 290 | /* |
9f32ceb4 | 291 | * If we don't have a 'real' lastlog, we need the username to |
5abcdf8e | 292 | * reliably search wtmp(x) for the last login (see |
2b87da3b | 293 | * wtmp_get_entry().) |
9f32ceb4 | 294 | */ |
5abcdf8e | 295 | pw = getpwuid(uid); |
a05a70ab | 296 | if (pw == NULL) |
297 | fatal("login_get_lastlog: Cannot find account for uid %i", uid); | |
2b87da3b | 298 | |
1bfbb762 | 299 | /* No MIN_SIZEOF here - we absolutely *must not* truncate the |
2b87da3b | 300 | * username */ |
d8caae24 | 301 | strlcpy(li->username, pw->pw_name, sizeof(li->username)); |
a05a70ab | 302 | |
564dd50a | 303 | if (getlast_entry(li)) |
304 | return li; | |
305 | else | |
a05a70ab | 306 | return NULL; |
1d7b9b20 | 307 | } |
308 | ||
1d7b9b20 | 309 | |
5abcdf8e | 310 | /* login_alloc_entry(int, char*, char*, char*) - Allocate and initialise |
2b87da3b | 311 | * a logininfo structure |
312 | * | |
5abcdf8e | 313 | * This function creates a new struct logininfo, a data structure |
314 | * meant to carry the information required to portably record login info. | |
315 | * | |
316 | * Returns a pointer to a newly created struct logininfo. If memory | |
317 | * allocation fails, the program halts. | |
318 | */ | |
564dd50a | 319 | struct |
320 | logininfo *login_alloc_entry(int pid, const char *username, | |
321 | const char *hostname, const char *line) | |
322 | { | |
323 | struct logininfo *newli; | |
1d7b9b20 | 324 | |
dbaa2e87 | 325 | newli = (struct logininfo *) xmalloc (sizeof(*newli)); |
564dd50a | 326 | (void)login_init_entry(newli, pid, username, hostname, line); |
327 | return newli; | |
1d7b9b20 | 328 | } |
329 | ||
330 | ||
5abcdf8e | 331 | /* login_free_entry(struct logininfo *) - free struct memory */ |
1d7b9b20 | 332 | void |
564dd50a | 333 | login_free_entry(struct logininfo *li) |
334 | { | |
335 | xfree(li); | |
1d7b9b20 | 336 | } |
337 | ||
338 | ||
5abcdf8e | 339 | /* login_init_entry(struct logininfo *, int, char*, char*, char*) |
340 | * - initialise a struct logininfo | |
2b87da3b | 341 | * |
5abcdf8e | 342 | * Populates a new struct logininfo, a data structure meant to carry |
343 | * the information required to portably record login info. | |
344 | * | |
345 | * Returns: 1 | |
346 | */ | |
564dd50a | 347 | int |
2b87da3b | 348 | login_init_entry(struct logininfo *li, int pid, const char *username, |
564dd50a | 349 | const char *hostname, const char *line) |
350 | { | |
d8caae24 | 351 | struct passwd *pw; |
2b87da3b | 352 | |
dbaa2e87 | 353 | memset(li, 0, sizeof(*li)); |
2b87da3b | 354 | |
564dd50a | 355 | li->pid = pid; |
d8caae24 | 356 | |
564dd50a | 357 | /* set the line information */ |
358 | if (line) | |
359 | line_fullname(li->line, line, sizeof(li->line)); | |
1d7b9b20 | 360 | |
d8caae24 | 361 | if (username) { |
564dd50a | 362 | strlcpy(li->username, username, sizeof(li->username)); |
d8caae24 | 363 | pw = getpwnam(li->username); |
364 | if (pw == NULL) | |
365 | fatal("login_init_entry: Cannot find user \"%s\"", li->username); | |
366 | li->uid = pw->pw_uid; | |
367 | } | |
a05a70ab | 368 | |
564dd50a | 369 | if (hostname) |
370 | strlcpy(li->hostname, hostname, sizeof(li->hostname)); | |
d8caae24 | 371 | |
564dd50a | 372 | return 1; |
1d7b9b20 | 373 | } |
374 | ||
5abcdf8e | 375 | /* login_set_current_time(struct logininfo *) - set the current time |
376 | * | |
377 | * Set the current time in a logininfo structure. This function is | |
378 | * meant to eliminate the need to deal with system dependencies for | |
379 | * time handling. | |
380 | */ | |
1d7b9b20 | 381 | void |
564dd50a | 382 | login_set_current_time(struct logininfo *li) |
383 | { | |
1d7b9b20 | 384 | struct timeval tv; |
385 | ||
386 | gettimeofday(&tv, NULL); | |
2b87da3b | 387 | |
d8caae24 | 388 | li->tv_sec = tv.tv_sec; |
389 | li->tv_usec = tv.tv_usec; | |
1d7b9b20 | 390 | } |
391 | ||
564dd50a | 392 | /* copy a sockaddr_* into our logininfo */ |
1d7b9b20 | 393 | void |
564dd50a | 394 | login_set_addr(struct logininfo *li, const struct sockaddr *sa, |
395 | const unsigned int sa_size) | |
396 | { | |
397 | unsigned int bufsize = sa_size; | |
398 | ||
399 | /* make sure we don't overrun our union */ | |
400 | if (sizeof(li->hostaddr) < sa_size) | |
401 | bufsize = sizeof(li->hostaddr); | |
402 | ||
403 | memcpy((void *)&(li->hostaddr.sa), (const void *)sa, bufsize); | |
1d7b9b20 | 404 | } |
1d7b9b20 | 405 | |
564dd50a | 406 | |
407 | /** | |
408 | ** login_write: Call low-level recording functions based on autoconf | |
409 | ** results | |
410 | **/ | |
1d7b9b20 | 411 | int |
564dd50a | 412 | login_write (struct logininfo *li) |
413 | { | |
3c62e7eb | 414 | #ifndef HAVE_CYGWIN |
1d7b9b20 | 415 | if ((int)geteuid() != 0) { |
416 | log("Attempt to write login records by non-root user (aborting)"); | |
417 | return 1; | |
418 | } | |
3c62e7eb | 419 | #endif |
a05a70ab | 420 | |
1d7b9b20 | 421 | /* set the timestamp */ |
422 | login_set_current_time(li); | |
423 | #ifdef USE_LOGIN | |
424 | syslogin_write_entry(li); | |
425 | #endif | |
426 | #ifdef USE_LASTLOG | |
427 | if (li->type == LTYPE_LOGIN) { | |
428 | lastlog_write_entry(li); | |
429 | } | |
430 | #endif | |
431 | #ifdef USE_UTMP | |
432 | utmp_write_entry(li); | |
433 | #endif | |
434 | #ifdef USE_WTMP | |
435 | wtmp_write_entry(li); | |
436 | #endif | |
437 | #ifdef USE_UTMPX | |
438 | utmpx_write_entry(li); | |
439 | #endif | |
440 | #ifdef USE_WTMPX | |
441 | wtmpx_write_entry(li); | |
442 | #endif | |
443 | return 0; | |
444 | } | |
445 | ||
7e2d5fa4 | 446 | #ifdef LOGIN_NEEDS_UTMPX |
447 | int | |
448 | login_utmp_only(struct logininfo *li) | |
449 | { | |
450 | li->type = LTYPE_LOGIN; | |
451 | # ifdef USE_UTMP | |
452 | utmp_write_entry(li); | |
453 | # endif | |
454 | # ifdef USE_WTMP | |
455 | wtmp_write_entry(li); | |
456 | # endif | |
457 | # ifdef USE_UTMPX | |
458 | utmpx_write_entry(li); | |
459 | # endif | |
460 | # ifdef USE_WTMPX | |
461 | wtmpx_write_entry(li); | |
462 | # endif | |
463 | return 0; | |
464 | } | |
465 | #endif | |
466 | ||
564dd50a | 467 | /** |
468 | ** getlast_entry: Call low-level functions to retrieve the last login | |
469 | ** time. | |
470 | **/ | |
1d7b9b20 | 471 | |
564dd50a | 472 | /* take the uid in li and return the last login time */ |
1d7b9b20 | 473 | int |
564dd50a | 474 | getlast_entry(struct logininfo *li) |
475 | { | |
476 | #ifdef USE_LASTLOG | |
9f32ceb4 | 477 | return(lastlog_get_entry(li)); |
a05a70ab | 478 | #else /* !USE_LASTLOG */ |
1d7b9b20 | 479 | |
a05a70ab | 480 | #ifdef DISABLE_LASTLOG |
2b87da3b | 481 | /* On some systems we shouldn't even try to obtain last login |
3f45f1c3 | 482 | * time, e.g. AIX */ |
483 | return 0; | |
a05a70ab | 484 | # else /* DISABLE_LASTLOG */ |
564dd50a | 485 | /* Try to retrieve the last login time from wtmp */ |
a05a70ab | 486 | # if defined(USE_WTMP) && (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) |
564dd50a | 487 | /* retrieve last login time from utmp */ |
a05a70ab | 488 | return (wtmp_get_entry(li)); |
489 | # else /* defined(USE_WTMP) && (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) */ | |
564dd50a | 490 | /* If wtmp isn't available, try wtmpx */ |
a05a70ab | 491 | # if defined(USE_WTMPX) && (defined(HAVE_TIME_IN_UTMPX) || defined(HAVE_TV_IN_UTMPX)) |
564dd50a | 492 | /* retrieve last login time from utmpx */ |
a05a70ab | 493 | return (wtmpx_get_entry(li)); |
494 | # else | |
564dd50a | 495 | /* Give up: No means of retrieving last login time */ |
496 | return 0; | |
a05a70ab | 497 | # endif /* USE_WTMPX && (HAVE_TIME_IN_UTMPX || HAVE_TV_IN_UTMPX) */ |
498 | # endif /* USE_WTMP && (HAVE_TIME_IN_UTMP || HAVE_TV_IN_UTMP) */ | |
2b87da3b | 499 | # endif /* DISABLE_LASTLOG */ |
a05a70ab | 500 | #endif /* USE_LASTLOG */ |
564dd50a | 501 | } |
1d7b9b20 | 502 | |
503 | ||
1d7b9b20 | 504 | |
505 | /* | |
564dd50a | 506 | * 'line' string utility functions |
507 | * | |
508 | * These functions process the 'line' string into one of three forms: | |
509 | * | |
1d7b9b20 | 510 | * 1. The full filename (including '/dev') |
511 | * 2. The stripped name (excluding '/dev') | |
564dd50a | 512 | * 3. The abbreviated name (e.g. /dev/ttyp00 -> yp00 |
513 | * /dev/pts/1 -> ts/1 ) | |
1d7b9b20 | 514 | * |
515 | * Form 3 is used on some systems to identify a .tmp.? entry when | |
516 | * attempting to remove it. Typically both addition and removal is | |
564dd50a | 517 | * performed by one application - say, sshd - so as long as the choice |
518 | * uniquely identifies a terminal it's ok. | |
1d7b9b20 | 519 | */ |
520 | ||
521 | ||
564dd50a | 522 | /* line_fullname(): add the leading '/dev/' if it doesn't exist make |
523 | * sure dst has enough space, if not just copy src (ugh) */ | |
1d7b9b20 | 524 | char * |
564dd50a | 525 | line_fullname(char *dst, const char *src, int dstsize) |
526 | { | |
1d7b9b20 | 527 | memset(dst, '\0', dstsize); |
89d7510a | 528 | if ((strncmp(src, "/dev/", 5) == 0) || (dstsize < (strlen(src) + 5))) { |
1d7b9b20 | 529 | strlcpy(dst, src, dstsize); |
89d7510a | 530 | } else { |
a4d05724 | 531 | strlcpy(dst, "/dev/", dstsize); |
1d7b9b20 | 532 | strlcat(dst, src, dstsize); |
533 | } | |
534 | return dst; | |
535 | } | |
536 | ||
564dd50a | 537 | /* line_stripname(): strip the leading '/dev' if it exists, return dst */ |
1d7b9b20 | 538 | char * |
564dd50a | 539 | line_stripname(char *dst, const char *src, int dstsize) |
540 | { | |
1d7b9b20 | 541 | memset(dst, '\0', dstsize); |
542 | if (strncmp(src, "/dev/", 5) == 0) | |
89d7510a | 543 | strlcpy(dst, src + 5, dstsize); |
1d7b9b20 | 544 | else |
545 | strlcpy(dst, src, dstsize); | |
546 | return dst; | |
564dd50a | 547 | } |
548 | ||
564dd50a | 549 | /* line_abbrevname(): Return the abbreviated (usually four-character) |
550 | * form of the line (Just use the last <dstsize> characters of the | |
551 | * full name.) | |
552 | * | |
553 | * NOTE: use strncpy because we do NOT necessarily want zero | |
554 | * termination */ | |
1d7b9b20 | 555 | char * |
2b87da3b | 556 | line_abbrevname(char *dst, const char *src, int dstsize) |
a05a70ab | 557 | { |
558 | size_t len; | |
2b87da3b | 559 | |
1d7b9b20 | 560 | memset(dst, '\0', dstsize); |
2b87da3b | 561 | |
daaff4d5 | 562 | /* Always skip prefix if present */ |
563 | if (strncmp(src, "/dev/", 5) == 0) | |
564 | src += 5; | |
2b87da3b | 565 | |
a05a70ab | 566 | len = strlen(src); |
567 | ||
daaff4d5 | 568 | if (len > 0) { |
569 | if (((int)len - dstsize) > 0) | |
570 | src += ((int)len - dstsize); | |
571 | ||
572 | /* note: _don't_ change this to strlcpy */ | |
2b87da3b | 573 | strncpy(dst, src, (size_t)dstsize); |
a05a70ab | 574 | } |
2b87da3b | 575 | |
1d7b9b20 | 576 | return dst; |
577 | } | |
578 | ||
1d7b9b20 | 579 | /** |
580 | ** utmp utility functions | |
564dd50a | 581 | ** |
582 | ** These functions manipulate struct utmp, taking system differences | |
583 | ** into account. | |
1d7b9b20 | 584 | **/ |
585 | ||
586 | #if defined(USE_UTMP) || defined (USE_WTMP) || defined (USE_LOGIN) | |
587 | ||
1d7b9b20 | 588 | /* build the utmp structure */ |
589 | void | |
564dd50a | 590 | set_utmp_time(struct logininfo *li, struct utmp *ut) |
591 | { | |
a05a70ab | 592 | # ifdef HAVE_TV_IN_UTMP |
1d7b9b20 | 593 | ut->ut_tv.tv_sec = li->tv_sec; |
594 | ut->ut_tv.tv_usec = li->tv_usec; | |
a05a70ab | 595 | # else |
1d7b9b20 | 596 | # ifdef HAVE_TIME_IN_UTMP |
597 | ut->ut_time = li->tv_sec; | |
598 | # endif | |
a05a70ab | 599 | # endif |
1d7b9b20 | 600 | } |
601 | ||
602 | void | |
603 | construct_utmp(struct logininfo *li, | |
564dd50a | 604 | struct utmp *ut) |
605 | { | |
dbaa2e87 | 606 | memset(ut, '\0', sizeof(*ut)); |
5abcdf8e | 607 | |
608 | /* First fill out fields used for both logins and logouts */ | |
609 | ||
a05a70ab | 610 | # ifdef HAVE_ID_IN_UTMP |
1d7b9b20 | 611 | line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id)); |
a05a70ab | 612 | # endif |
1d7b9b20 | 613 | |
a05a70ab | 614 | # ifdef HAVE_TYPE_IN_UTMP |
5abcdf8e | 615 | /* This is done here to keep utmp constants out of struct logininfo */ |
1d7b9b20 | 616 | switch (li->type) { |
617 | case LTYPE_LOGIN: | |
618 | ut->ut_type = USER_PROCESS; | |
1a23ac2c | 619 | #ifdef _CRAY |
620 | cray_set_tmpdir(ut); | |
621 | #endif | |
1d7b9b20 | 622 | break; |
623 | case LTYPE_LOGOUT: | |
624 | ut->ut_type = DEAD_PROCESS; | |
1a23ac2c | 625 | #ifdef _CRAY |
626 | cray_retain_utmp(ut, li->pid); | |
627 | #endif | |
1d7b9b20 | 628 | break; |
629 | } | |
a05a70ab | 630 | # endif |
5abcdf8e | 631 | set_utmp_time(li, ut); |
1d7b9b20 | 632 | |
5abcdf8e | 633 | line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line)); |
a05a70ab | 634 | |
635 | # ifdef HAVE_PID_IN_UTMP | |
1d7b9b20 | 636 | ut->ut_pid = li->pid; |
a05a70ab | 637 | # endif |
5abcdf8e | 638 | |
639 | /* If we're logging out, leave all other fields blank */ | |
640 | if (li->type == LTYPE_LOGOUT) | |
641 | return; | |
642 | ||
a05a70ab | 643 | /* |
644 | * These fields are only used when logging in, and are blank | |
2b87da3b | 645 | * for logouts. |
a05a70ab | 646 | */ |
5abcdf8e | 647 | |
648 | /* Use strncpy because we don't necessarily want null termination */ | |
dc2a6d09 | 649 | strncpy(ut->ut_name, li->username, MIN_SIZEOF(ut->ut_name, li->username)); |
a05a70ab | 650 | # ifdef HAVE_HOST_IN_UTMP |
5abcdf8e | 651 | strncpy(ut->ut_host, li->hostname, MIN_SIZEOF(ut->ut_host, li->hostname)); |
a05a70ab | 652 | # endif |
653 | # ifdef HAVE_ADDR_IN_UTMP | |
564dd50a | 654 | /* this is just a 32-bit IP address */ |
655 | if (li->hostaddr.sa.sa_family == AF_INET) | |
656 | ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; | |
2b87da3b | 657 | # endif |
564dd50a | 658 | } |
a05a70ab | 659 | #endif /* USE_UTMP || USE_WTMP || USE_LOGIN */ |
564dd50a | 660 | |
1d7b9b20 | 661 | /** |
662 | ** utmpx utility functions | |
564dd50a | 663 | ** |
664 | ** These functions manipulate struct utmpx, accounting for system | |
665 | ** variations. | |
1d7b9b20 | 666 | **/ |
667 | ||
668 | #if defined(USE_UTMPX) || defined (USE_WTMPX) | |
1d7b9b20 | 669 | /* build the utmpx structure */ |
670 | void | |
564dd50a | 671 | set_utmpx_time(struct logininfo *li, struct utmpx *utx) |
672 | { | |
a05a70ab | 673 | # ifdef HAVE_TV_IN_UTMPX |
1d7b9b20 | 674 | utx->ut_tv.tv_sec = li->tv_sec; |
675 | utx->ut_tv.tv_usec = li->tv_usec; | |
a05a70ab | 676 | # else /* HAVE_TV_IN_UTMPX */ |
1d7b9b20 | 677 | # ifdef HAVE_TIME_IN_UTMPX |
678 | utx->ut_time = li->tv_sec; | |
a05a70ab | 679 | # endif /* HAVE_TIME_IN_UTMPX */ |
680 | # endif /* HAVE_TV_IN_UTMPX */ | |
1d7b9b20 | 681 | } |
682 | ||
683 | void | |
564dd50a | 684 | construct_utmpx(struct logininfo *li, struct utmpx *utx) |
685 | { | |
dbaa2e87 | 686 | memset(utx, '\0', sizeof(*utx)); |
daaff4d5 | 687 | # ifdef HAVE_ID_IN_UTMPX |
1d7b9b20 | 688 | line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id)); |
daaff4d5 | 689 | # endif |
1d7b9b20 | 690 | |
691 | /* this is done here to keep utmp constants out of loginrec.h */ | |
692 | switch (li->type) { | |
693 | case LTYPE_LOGIN: | |
694 | utx->ut_type = USER_PROCESS; | |
695 | break; | |
696 | case LTYPE_LOGOUT: | |
697 | utx->ut_type = DEAD_PROCESS; | |
698 | break; | |
699 | } | |
1d7b9b20 | 700 | line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line)); |
1d7b9b20 | 701 | set_utmpx_time(li, utx); |
5abcdf8e | 702 | utx->ut_pid = li->pid; |
703 | ||
704 | if (li->type == LTYPE_LOGOUT) | |
705 | return; | |
706 | ||
a05a70ab | 707 | /* |
708 | * These fields are only used when logging in, and are blank | |
2b87da3b | 709 | * for logouts. |
a05a70ab | 710 | */ |
5abcdf8e | 711 | |
712 | /* strncpy(): Don't necessarily want null termination */ | |
dc2a6d09 | 713 | strncpy(utx->ut_name, li->username, MIN_SIZEOF(utx->ut_name, li->username)); |
a05a70ab | 714 | # ifdef HAVE_HOST_IN_UTMPX |
5abcdf8e | 715 | strncpy(utx->ut_host, li->hostname, MIN_SIZEOF(utx->ut_host, li->hostname)); |
a05a70ab | 716 | # endif |
717 | # ifdef HAVE_ADDR_IN_UTMPX | |
764d4113 | 718 | /* this is just a 32-bit IP address */ |
719 | if (li->hostaddr.sa.sa_family == AF_INET) | |
720 | utx->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; | |
a05a70ab | 721 | # endif |
722 | # ifdef HAVE_SYSLEN_IN_UTMPX | |
5abcdf8e | 723 | /* ut_syslen is the length of the utx_host string */ |
724 | utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host)); | |
a05a70ab | 725 | # endif |
564dd50a | 726 | } |
a05a70ab | 727 | #endif /* USE_UTMPX || USE_WTMPX */ |
1d7b9b20 | 728 | |
729 | /** | |
564dd50a | 730 | ** Low-level utmp functions |
1d7b9b20 | 731 | **/ |
732 | ||
733 | /* FIXME: (ATL) utmp_write_direct needs testing */ | |
1d7b9b20 | 734 | #ifdef USE_UTMP |
735 | ||
1d7b9b20 | 736 | /* if we can, use pututline() etc. */ |
a05a70ab | 737 | # if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \ |
738 | defined(HAVE_PUTUTLINE) | |
1d7b9b20 | 739 | # define UTMP_USE_LIBRARY |
a05a70ab | 740 | # endif |
1d7b9b20 | 741 | |
742 | ||
743 | /* write a utmp entry with the system's help (pututline() and pals) */ | |
a05a70ab | 744 | # ifdef UTMP_USE_LIBRARY |
1d7b9b20 | 745 | static int |
564dd50a | 746 | utmp_write_library(struct logininfo *li, struct utmp *ut) |
747 | { | |
1d7b9b20 | 748 | setutent(); |
749 | pututline(ut); | |
750 | ||
a05a70ab | 751 | # ifdef HAVE_ENDUTENT |
1d7b9b20 | 752 | endutent(); |
a05a70ab | 753 | # endif |
1d7b9b20 | 754 | return 1; |
564dd50a | 755 | } |
a05a70ab | 756 | # else /* UTMP_USE_LIBRARY */ |
1d7b9b20 | 757 | |
758 | /* write a utmp entry direct to the file */ | |
564dd50a | 759 | /* This is a slightly modification of code in OpenBSD's login.c */ |
1d7b9b20 | 760 | static int |
564dd50a | 761 | utmp_write_direct(struct logininfo *li, struct utmp *ut) |
762 | { | |
1d7b9b20 | 763 | struct utmp old_ut; |
764 | register int fd; | |
765 | int tty; | |
766 | ||
5abcdf8e | 767 | /* FIXME: (ATL) ttyslot() needs local implementation */ |
dbaa2e87 | 768 | |
698d107e | 769 | #if defined(HAVE_GETTTYENT) |
dbaa2e87 | 770 | register struct ttyent *ty; |
771 | ||
772 | tty=0; | |
773 | ||
774 | setttyent(); | |
775 | while ((struct ttyent *)0 != (ty = getttyent())) { | |
776 | tty++; | |
777 | if (!strncmp(ty->ty_name, ut->ut_line, sizeof(ut->ut_line))) | |
778 | break; | |
779 | } | |
780 | endttyent(); | |
781 | ||
782 | if((struct ttyent *)0 == ty) { | |
783 | log("utmp_write_entry: tty not found"); | |
784 | return(1); | |
785 | } | |
786 | #else /* FIXME */ | |
787 | ||
1d7b9b20 | 788 | tty = ttyslot(); /* seems only to work for /dev/ttyp? style names */ |
789 | ||
698d107e | 790 | #endif /* HAVE_GETTTYENT */ |
dbaa2e87 | 791 | |
1d7b9b20 | 792 | if (tty > 0 && (fd = open(UTMP_FILE, O_RDWR|O_CREAT, 0644)) >= 0) { |
793 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); | |
794 | /* | |
795 | * Prevent luser from zero'ing out ut_host. | |
796 | * If the new ut_line is empty but the old one is not | |
dc2a6d09 | 797 | * and ut_line and ut_name match, preserve the old ut_line. |
1d7b9b20 | 798 | */ |
2b87da3b | 799 | if (atomicio(read, fd, &old_ut, sizeof(old_ut)) == sizeof(old_ut) && |
800 | (ut->ut_host[0] == '\0') && (old_ut.ut_host[0] != '\0') && | |
801 | (strncmp(old_ut.ut_line, ut->ut_line, sizeof(ut->ut_line)) == 0) && | |
dc2a6d09 | 802 | (strncmp(old_ut.ut_name, ut->ut_name, sizeof(ut->ut_name)) == 0)) { |
1d7b9b20 | 803 | (void)memcpy(ut->ut_host, old_ut.ut_host, sizeof(ut->ut_host)); |
9f32ceb4 | 804 | } |
2b87da3b | 805 | |
1d7b9b20 | 806 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); |
32eec038 | 807 | if (atomicio(write, fd, ut, sizeof(*ut)) != sizeof(*ut)) |
1d7b9b20 | 808 | log("utmp_write_direct: error writing %s: %s", |
5abcdf8e | 809 | UTMP_FILE, strerror(errno)); |
2b87da3b | 810 | |
1d7b9b20 | 811 | (void)close(fd); |
812 | return 1; | |
9f32ceb4 | 813 | } else { |
1d7b9b20 | 814 | return 0; |
9f32ceb4 | 815 | } |
564dd50a | 816 | } |
a05a70ab | 817 | # endif /* UTMP_USE_LIBRARY */ |
1d7b9b20 | 818 | |
819 | static int | |
564dd50a | 820 | utmp_perform_login(struct logininfo *li) |
821 | { | |
1d7b9b20 | 822 | struct utmp ut; |
823 | ||
824 | construct_utmp(li, &ut); | |
a05a70ab | 825 | # ifdef UTMP_USE_LIBRARY |
1d7b9b20 | 826 | if (!utmp_write_library(li, &ut)) { |
5abcdf8e | 827 | log("utmp_perform_login: utmp_write_library() failed"); |
1d7b9b20 | 828 | return 0; |
829 | } | |
a05a70ab | 830 | # else |
1d7b9b20 | 831 | if (!utmp_write_direct(li, &ut)) { |
832 | log("utmp_perform_login: utmp_write_direct() failed"); | |
833 | return 0; | |
834 | } | |
a05a70ab | 835 | # endif |
1d7b9b20 | 836 | return 1; |
564dd50a | 837 | } |
1d7b9b20 | 838 | |
839 | ||
840 | static int | |
564dd50a | 841 | utmp_perform_logout(struct logininfo *li) |
842 | { | |
1d7b9b20 | 843 | struct utmp ut; |
844 | ||
5abcdf8e | 845 | construct_utmp(li, &ut); |
a05a70ab | 846 | # ifdef UTMP_USE_LIBRARY |
5abcdf8e | 847 | if (!utmp_write_library(li, &ut)) { |
848 | log("utmp_perform_logout: utmp_write_library() failed"); | |
849 | return 0; | |
850 | } | |
a05a70ab | 851 | # else |
5abcdf8e | 852 | if (!utmp_write_direct(li, &ut)) { |
853 | log("utmp_perform_logout: utmp_write_direct() failed"); | |
854 | return 0; | |
855 | } | |
a05a70ab | 856 | # endif |
1d7b9b20 | 857 | return 1; |
564dd50a | 858 | } |
1d7b9b20 | 859 | |
860 | ||
861 | int | |
564dd50a | 862 | utmp_write_entry(struct logininfo *li) |
863 | { | |
1d7b9b20 | 864 | switch(li->type) { |
865 | case LTYPE_LOGIN: | |
866 | return utmp_perform_login(li); | |
867 | ||
868 | case LTYPE_LOGOUT: | |
869 | return utmp_perform_logout(li); | |
870 | ||
871 | default: | |
872 | log("utmp_write_entry: invalid type field"); | |
873 | return 0; | |
874 | } | |
564dd50a | 875 | } |
a05a70ab | 876 | #endif /* USE_UTMP */ |
1d7b9b20 | 877 | |
878 | ||
879 | /** | |
564dd50a | 880 | ** Low-level utmpx functions |
1d7b9b20 | 881 | **/ |
882 | ||
883 | /* not much point if we don't want utmpx entries */ | |
884 | #ifdef USE_UTMPX | |
885 | ||
1d7b9b20 | 886 | /* if we have the wherewithall, use pututxline etc. */ |
a05a70ab | 887 | # if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) && \ |
888 | defined(HAVE_PUTUTXLINE) | |
1d7b9b20 | 889 | # define UTMPX_USE_LIBRARY |
a05a70ab | 890 | # endif |
1d7b9b20 | 891 | |
892 | ||
893 | /* write a utmpx entry with the system's help (pututxline() and pals) */ | |
a05a70ab | 894 | # ifdef UTMPX_USE_LIBRARY |
1d7b9b20 | 895 | static int |
564dd50a | 896 | utmpx_write_library(struct logininfo *li, struct utmpx *utx) |
897 | { | |
1d7b9b20 | 898 | setutxent(); |
899 | pututxline(utx); | |
900 | ||
a05a70ab | 901 | # ifdef HAVE_ENDUTXENT |
1d7b9b20 | 902 | endutxent(); |
a05a70ab | 903 | # endif |
1d7b9b20 | 904 | return 1; |
564dd50a | 905 | } |
1d7b9b20 | 906 | |
a05a70ab | 907 | # else /* UTMPX_USE_LIBRARY */ |
1d7b9b20 | 908 | |
909 | /* write a utmp entry direct to the file */ | |
910 | static int | |
564dd50a | 911 | utmpx_write_direct(struct logininfo *li, struct utmpx *utx) |
2b87da3b | 912 | { |
1d7b9b20 | 913 | log("utmpx_write_direct: not implemented!"); |
914 | return 0; | |
564dd50a | 915 | } |
a05a70ab | 916 | # endif /* UTMPX_USE_LIBRARY */ |
1d7b9b20 | 917 | |
918 | static int | |
564dd50a | 919 | utmpx_perform_login(struct logininfo *li) |
920 | { | |
1d7b9b20 | 921 | struct utmpx utx; |
922 | ||
923 | construct_utmpx(li, &utx); | |
a05a70ab | 924 | # ifdef UTMPX_USE_LIBRARY |
1d7b9b20 | 925 | if (!utmpx_write_library(li, &utx)) { |
926 | log("utmpx_perform_login: utmp_write_library() failed"); | |
927 | return 0; | |
928 | } | |
a05a70ab | 929 | # else |
1d7b9b20 | 930 | if (!utmpx_write_direct(li, &ut)) { |
931 | log("utmpx_perform_login: utmp_write_direct() failed"); | |
932 | return 0; | |
933 | } | |
a05a70ab | 934 | # endif |
1d7b9b20 | 935 | return 1; |
564dd50a | 936 | } |
1d7b9b20 | 937 | |
938 | ||
939 | static int | |
564dd50a | 940 | utmpx_perform_logout(struct logininfo *li) |
941 | { | |
1d7b9b20 | 942 | struct utmpx utx; |
943 | ||
944 | memset(&utx, '\0', sizeof(utx)); | |
945 | set_utmpx_time(li, &utx); | |
946 | line_stripname(utx.ut_line, li->line, sizeof(utx.ut_line)); | |
a05a70ab | 947 | # ifdef HAVE_ID_IN_UTMPX |
1d7b9b20 | 948 | line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id)); |
a05a70ab | 949 | # endif |
950 | # ifdef HAVE_TYPE_IN_UTMPX | |
1d7b9b20 | 951 | utx.ut_type = DEAD_PROCESS; |
a05a70ab | 952 | # endif |
1d7b9b20 | 953 | |
a05a70ab | 954 | # ifdef UTMPX_USE_LIBRARY |
1d7b9b20 | 955 | utmpx_write_library(li, &utx); |
a05a70ab | 956 | # else |
1d7b9b20 | 957 | utmpx_write_direct(li, &utx); |
a05a70ab | 958 | # endif |
1d7b9b20 | 959 | return 1; |
564dd50a | 960 | } |
1d7b9b20 | 961 | |
1d7b9b20 | 962 | int |
564dd50a | 963 | utmpx_write_entry(struct logininfo *li) |
964 | { | |
1d7b9b20 | 965 | switch(li->type) { |
966 | case LTYPE_LOGIN: | |
967 | return utmpx_perform_login(li); | |
968 | case LTYPE_LOGOUT: | |
969 | return utmpx_perform_logout(li); | |
970 | default: | |
971 | log("utmpx_write_entry: invalid type field"); | |
972 | return 0; | |
973 | } | |
564dd50a | 974 | } |
a05a70ab | 975 | #endif /* USE_UTMPX */ |
1d7b9b20 | 976 | |
977 | ||
978 | /** | |
564dd50a | 979 | ** Low-level wtmp functions |
1d7b9b20 | 980 | **/ |
981 | ||
2b87da3b | 982 | #ifdef USE_WTMP |
1d7b9b20 | 983 | |
1d7b9b20 | 984 | /* write a wtmp entry direct to the end of the file */ |
564dd50a | 985 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
1d7b9b20 | 986 | static int |
564dd50a | 987 | wtmp_write(struct logininfo *li, struct utmp *ut) |
988 | { | |
1d7b9b20 | 989 | struct stat buf; |
990 | int fd, ret = 1; | |
991 | ||
992 | if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) < 0) { | |
993 | log("wtmp_write: problem writing %s: %s", | |
994 | WTMP_FILE, strerror(errno)); | |
995 | return 0; | |
996 | } | |
2b87da3b | 997 | if (fstat(fd, &buf) == 0) |
9f32ceb4 | 998 | if (atomicio(write, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
1d7b9b20 | 999 | ftruncate(fd, buf.st_size); |
1000 | log("wtmp_write: problem writing %s: %s", | |
1001 | WTMP_FILE, strerror(errno)); | |
1002 | ret = 0; | |
1003 | } | |
1004 | (void)close(fd); | |
1d7b9b20 | 1005 | return ret; |
564dd50a | 1006 | } |
1d7b9b20 | 1007 | |
1d7b9b20 | 1008 | static int |
a05a70ab | 1009 | wtmp_perform_login(struct logininfo *li) |
1010 | { | |
1d7b9b20 | 1011 | struct utmp ut; |
1012 | ||
1013 | construct_utmp(li, &ut); | |
1014 | return wtmp_write(li, &ut); | |
564dd50a | 1015 | } |
1d7b9b20 | 1016 | |
1017 | ||
1018 | static int | |
564dd50a | 1019 | wtmp_perform_logout(struct logininfo *li) |
1020 | { | |
1d7b9b20 | 1021 | struct utmp ut; |
1022 | ||
1023 | construct_utmp(li, &ut); | |
1d7b9b20 | 1024 | return wtmp_write(li, &ut); |
564dd50a | 1025 | } |
1d7b9b20 | 1026 | |
1027 | ||
1028 | int | |
564dd50a | 1029 | wtmp_write_entry(struct logininfo *li) |
1030 | { | |
1d7b9b20 | 1031 | switch(li->type) { |
1032 | case LTYPE_LOGIN: | |
1033 | return wtmp_perform_login(li); | |
1034 | case LTYPE_LOGOUT: | |
1035 | return wtmp_perform_logout(li); | |
1036 | default: | |
1037 | log("wtmp_write_entry: invalid type field"); | |
1038 | return 0; | |
1039 | } | |
564dd50a | 1040 | } |
1d7b9b20 | 1041 | |
1042 | ||
5abcdf8e | 1043 | /* Notes on fetching login data from wtmp/wtmpx |
2b87da3b | 1044 | * |
5abcdf8e | 1045 | * Logouts are usually recorded with (amongst other things) a blank |
1046 | * username on a given tty line. However, some systems (HP-UX is one) | |
1047 | * leave all fields set, but change the ut_type field to DEAD_PROCESS. | |
1048 | * | |
1049 | * Since we're only looking for logins here, we know that the username | |
1050 | * must be set correctly. On systems that leave it in, we check for | |
1051 | * ut_type==USER_PROCESS (indicating a login.) | |
1052 | * | |
1053 | * Portability: Some systems may set something other than USER_PROCESS | |
1054 | * to indicate a login process. I don't know of any as I write. Also, | |
1055 | * it's possible that some systems may both leave the username in | |
1056 | * place and not have ut_type. | |
1057 | */ | |
1058 | ||
5abcdf8e | 1059 | /* return true if this wtmp entry indicates a login */ |
1060 | static int | |
1061 | wtmp_islogin(struct logininfo *li, struct utmp *ut) | |
1062 | { | |
2b87da3b | 1063 | if (strncmp(li->username, ut->ut_name, |
dc2a6d09 | 1064 | MIN_SIZEOF(li->username, ut->ut_name)) == 0) { |
a05a70ab | 1065 | # ifdef HAVE_TYPE_IN_UTMP |
5abcdf8e | 1066 | if (ut->ut_type & USER_PROCESS) |
1067 | return 1; | |
a05a70ab | 1068 | # else |
5abcdf8e | 1069 | return 1; |
a05a70ab | 1070 | # endif |
5abcdf8e | 1071 | } |
1072 | return 0; | |
1073 | } | |
1074 | ||
1d7b9b20 | 1075 | int |
564dd50a | 1076 | wtmp_get_entry(struct logininfo *li) |
1077 | { | |
1d7b9b20 | 1078 | struct stat st; |
1079 | struct utmp ut; | |
5abcdf8e | 1080 | int fd, found=0; |
1081 | ||
1082 | /* Clear the time entries in our logininfo */ | |
1083 | li->tv_sec = li->tv_usec = 0; | |
1d7b9b20 | 1084 | |
1085 | if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) { | |
1086 | log("wtmp_get_entry: problem opening %s: %s", | |
1087 | WTMP_FILE, strerror(errno)); | |
1088 | return 0; | |
1089 | } | |
2b87da3b | 1090 | if (fstat(fd, &st) != 0) { |
1d7b9b20 | 1091 | log("wtmp_get_entry: couldn't stat %s: %s", |
1092 | WTMP_FILE, strerror(errno)); | |
1093 | close(fd); | |
1094 | return 0; | |
1095 | } | |
1d7b9b20 | 1096 | |
5abcdf8e | 1097 | /* Seek to the start of the last struct utmp */ |
d9d47a26 | 1098 | if (lseek(fd, -(off_t)sizeof(struct utmp), SEEK_END) == -1) { |
5abcdf8e | 1099 | /* Looks like we've got a fresh wtmp file */ |
1100 | close(fd); | |
1101 | return 0; | |
1102 | } | |
1103 | ||
1104 | while (!found) { | |
9f32ceb4 | 1105 | if (atomicio(read, fd, &ut, sizeof(ut)) != sizeof(ut)) { |
1d7b9b20 | 1106 | log("wtmp_get_entry: read of %s failed: %s", |
1107 | WTMP_FILE, strerror(errno)); | |
1108 | close (fd); | |
1109 | return 0; | |
1110 | } | |
5abcdf8e | 1111 | if ( wtmp_islogin(li, &ut) ) { |
1112 | found = 1; | |
1113 | /* We've already checked for a time in struct | |
1114 | * utmp, in login_getlast(). */ | |
a05a70ab | 1115 | # ifdef HAVE_TIME_IN_UTMP |
1d7b9b20 | 1116 | li->tv_sec = ut.ut_time; |
a05a70ab | 1117 | # else |
1d7b9b20 | 1118 | # if HAVE_TV_IN_UTMP |
1119 | li->tv_sec = ut.ut_tv.tv_sec; | |
1120 | # endif | |
a05a70ab | 1121 | # endif |
5abcdf8e | 1122 | line_fullname(li->line, ut.ut_line, |
1123 | MIN_SIZEOF(li->line, ut.ut_line)); | |
a05a70ab | 1124 | # ifdef HAVE_HOST_IN_UTMP |
5abcdf8e | 1125 | strlcpy(li->hostname, ut.ut_host, |
1126 | MIN_SIZEOF(li->hostname, ut.ut_host)); | |
a05a70ab | 1127 | # endif |
5abcdf8e | 1128 | continue; |
1d7b9b20 | 1129 | } |
5abcdf8e | 1130 | /* Seek back 2 x struct utmp */ |
d9d47a26 | 1131 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmp)), SEEK_CUR) == -1) { |
5abcdf8e | 1132 | /* We've found the start of the file, so quit */ |
1d7b9b20 | 1133 | close (fd); |
1134 | return 0; | |
1135 | } | |
5abcdf8e | 1136 | } |
1137 | ||
1138 | /* We found an entry. Tidy up and return */ | |
1139 | close(fd); | |
1d7b9b20 | 1140 | return 1; |
564dd50a | 1141 | } |
a05a70ab | 1142 | # endif /* USE_WTMP */ |
1d7b9b20 | 1143 | |
1144 | ||
1145 | /** | |
564dd50a | 1146 | ** Low-level wtmpx functions |
1d7b9b20 | 1147 | **/ |
1148 | ||
1149 | #ifdef USE_WTMPX | |
1d7b9b20 | 1150 | /* write a wtmpx entry direct to the end of the file */ |
564dd50a | 1151 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
1d7b9b20 | 1152 | static int |
564dd50a | 1153 | wtmpx_write(struct logininfo *li, struct utmpx *utx) |
1154 | { | |
1d7b9b20 | 1155 | struct stat buf; |
1156 | int fd, ret = 1; | |
1157 | ||
1158 | if ((fd = open(WTMPX_FILE, O_WRONLY|O_APPEND, 0)) < 0) { | |
1159 | log("wtmpx_write: problem opening %s: %s", | |
1160 | WTMPX_FILE, strerror(errno)); | |
1161 | return 0; | |
1162 | } | |
1163 | ||
2b87da3b | 1164 | if (fstat(fd, &buf) == 0) |
9f32ceb4 | 1165 | if (atomicio(write, fd, utx, sizeof(*utx)) != sizeof(*utx)) { |
1d7b9b20 | 1166 | ftruncate(fd, buf.st_size); |
1167 | log("wtmpx_write: problem writing %s: %s", | |
1168 | WTMPX_FILE, strerror(errno)); | |
1169 | ret = 0; | |
1170 | } | |
1171 | (void)close(fd); | |
1172 | ||
1173 | return ret; | |
564dd50a | 1174 | } |
1d7b9b20 | 1175 | |
1176 | ||
1177 | static int | |
564dd50a | 1178 | wtmpx_perform_login(struct logininfo *li) |
1179 | { | |
1d7b9b20 | 1180 | struct utmpx utx; |
1181 | ||
1182 | construct_utmpx(li, &utx); | |
1183 | return wtmpx_write(li, &utx); | |
564dd50a | 1184 | } |
1d7b9b20 | 1185 | |
1186 | ||
1187 | static int | |
564dd50a | 1188 | wtmpx_perform_logout(struct logininfo *li) |
1189 | { | |
1d7b9b20 | 1190 | struct utmpx utx; |
1191 | ||
1192 | construct_utmpx(li, &utx); | |
1d7b9b20 | 1193 | return wtmpx_write(li, &utx); |
564dd50a | 1194 | } |
1d7b9b20 | 1195 | |
1196 | ||
1197 | int | |
564dd50a | 1198 | wtmpx_write_entry(struct logininfo *li) |
1199 | { | |
1d7b9b20 | 1200 | switch(li->type) { |
1201 | case LTYPE_LOGIN: | |
1202 | return wtmpx_perform_login(li); | |
1203 | case LTYPE_LOGOUT: | |
1204 | return wtmpx_perform_logout(li); | |
1205 | default: | |
1206 | log("wtmpx_write_entry: invalid type field"); | |
1207 | return 0; | |
1208 | } | |
564dd50a | 1209 | } |
1d7b9b20 | 1210 | |
5abcdf8e | 1211 | /* Please see the notes above wtmp_islogin() for information about the |
1212 | next two functions */ | |
1213 | ||
1214 | /* Return true if this wtmpx entry indicates a login */ | |
1215 | static int | |
1216 | wtmpx_islogin(struct logininfo *li, struct utmpx *utx) | |
1217 | { | |
dc2a6d09 | 1218 | if ( strncmp(li->username, utx->ut_name, |
1219 | MIN_SIZEOF(li->username, utx->ut_name)) == 0 ) { | |
a05a70ab | 1220 | # ifdef HAVE_TYPE_IN_UTMPX |
5abcdf8e | 1221 | if (utx->ut_type == USER_PROCESS) |
1222 | return 1; | |
a05a70ab | 1223 | # else |
5abcdf8e | 1224 | return 1; |
a05a70ab | 1225 | # endif |
5abcdf8e | 1226 | } |
1227 | return 0; | |
1228 | } | |
1229 | ||
1d7b9b20 | 1230 | |
1231 | int | |
564dd50a | 1232 | wtmpx_get_entry(struct logininfo *li) |
1233 | { | |
1d7b9b20 | 1234 | struct stat st; |
1235 | struct utmpx utx; | |
5abcdf8e | 1236 | int fd, found=0; |
1237 | ||
1238 | /* Clear the time entries */ | |
1239 | li->tv_sec = li->tv_usec = 0; | |
1d7b9b20 | 1240 | |
1241 | if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) { | |
1242 | log("wtmpx_get_entry: problem opening %s: %s", | |
1243 | WTMPX_FILE, strerror(errno)); | |
1244 | return 0; | |
1245 | } | |
2b87da3b | 1246 | if (fstat(fd, &st) != 0) { |
1d7b9b20 | 1247 | log("wtmpx_get_entry: couldn't stat %s: %s", |
1248 | WTMP_FILE, strerror(errno)); | |
1249 | close(fd); | |
1250 | return 0; | |
1251 | } | |
2b87da3b | 1252 | |
5abcdf8e | 1253 | /* Seek to the start of the last struct utmpx */ |
d9d47a26 | 1254 | if (lseek(fd, -(off_t)sizeof(struct utmpx), SEEK_END) == -1 ) { |
5abcdf8e | 1255 | /* probably a newly rotated wtmpx file */ |
1256 | close(fd); | |
1257 | return 0; | |
1258 | } | |
1d7b9b20 | 1259 | |
5abcdf8e | 1260 | while (!found) { |
9f32ceb4 | 1261 | if (atomicio(read, fd, &utx, sizeof(utx)) != sizeof(utx)) { |
1d7b9b20 | 1262 | log("wtmpx_get_entry: read of %s failed: %s", |
1263 | WTMPX_FILE, strerror(errno)); | |
1264 | close (fd); | |
1265 | return 0; | |
1266 | } | |
1d7b9b20 | 1267 | /* Logouts are recorded as a blank username on a particular line. |
1268 | * So, we just need to find the username in struct utmpx */ | |
5abcdf8e | 1269 | if ( wtmpx_islogin(li, &utx) ) { |
a05a70ab | 1270 | # ifdef HAVE_TV_IN_UTMPX |
1d7b9b20 | 1271 | li->tv_sec = utx.ut_tv.tv_sec; |
a05a70ab | 1272 | # else |
1d7b9b20 | 1273 | # ifdef HAVE_TIME_IN_UTMPX |
1274 | li->tv_sec = utx.ut_time; | |
1275 | # endif | |
a05a70ab | 1276 | # endif |
a4d05724 | 1277 | line_fullname(li->line, utx.ut_line, sizeof(li->line)); |
a05a70ab | 1278 | # ifdef HAVE_HOST_IN_UTMPX |
5abcdf8e | 1279 | strlcpy(li->hostname, utx.ut_host, |
1280 | MIN_SIZEOF(li->hostname, utx.ut_host)); | |
a05a70ab | 1281 | # endif |
5abcdf8e | 1282 | continue; |
1d7b9b20 | 1283 | } |
d9d47a26 | 1284 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmpx)), SEEK_CUR) == -1) { |
1d7b9b20 | 1285 | close (fd); |
1286 | return 0; | |
1287 | } | |
5abcdf8e | 1288 | } |
1289 | ||
1290 | close(fd); | |
1d7b9b20 | 1291 | return 1; |
564dd50a | 1292 | } |
f988dce5 | 1293 | #endif /* USE_WTMPX */ |
1d7b9b20 | 1294 | |
1d7b9b20 | 1295 | /** |
564dd50a | 1296 | ** Low-level libutil login() functions |
1d7b9b20 | 1297 | **/ |
1298 | ||
1299 | #ifdef USE_LOGIN | |
1d7b9b20 | 1300 | static int |
564dd50a | 1301 | syslogin_perform_login(struct logininfo *li) |
1302 | { | |
1d7b9b20 | 1303 | struct utmp *ut; |
1304 | ||
dbaa2e87 | 1305 | if (! (ut = (struct utmp *)malloc(sizeof(*ut)))) { |
1d7b9b20 | 1306 | log("syslogin_perform_login: couldn't malloc()"); |
1307 | return 0; | |
1308 | } | |
1309 | construct_utmp(li, ut); | |
1310 | login(ut); | |
1311 | ||
1312 | return 1; | |
564dd50a | 1313 | } |
1d7b9b20 | 1314 | |
564dd50a | 1315 | static int |
1316 | syslogin_perform_logout(struct logininfo *li) | |
1317 | { | |
a05a70ab | 1318 | # ifdef HAVE_LOGOUT |
1d7b9b20 | 1319 | char line[8]; |
2b87da3b | 1320 | |
1d7b9b20 | 1321 | (void)line_stripname(line, li->line, sizeof(line)); |
1322 | ||
1323 | if (!logout(line)) { | |
1324 | log("syslogin_perform_logout: logout() returned an error"); | |
a05a70ab | 1325 | # ifdef HAVE_LOGWTMP |
1d7b9b20 | 1326 | } else { |
1327 | logwtmp(line, "", ""); | |
a05a70ab | 1328 | # endif |
5637650d | 1329 | } |
5abcdf8e | 1330 | /* FIXME: (ATL - if the need arises) What to do if we have |
1331 | * login, but no logout? what if logout but no logwtmp? All | |
1332 | * routines are in libutil so they should all be there, | |
1333 | * but... */ | |
a05a70ab | 1334 | # endif |
1d7b9b20 | 1335 | return 1; |
564dd50a | 1336 | } |
1d7b9b20 | 1337 | |
1d7b9b20 | 1338 | int |
564dd50a | 1339 | syslogin_write_entry(struct logininfo *li) |
1340 | { | |
1d7b9b20 | 1341 | switch (li->type) { |
1342 | case LTYPE_LOGIN: | |
1343 | return syslogin_perform_login(li); | |
1344 | case LTYPE_LOGOUT: | |
1345 | return syslogin_perform_logout(li); | |
1346 | default: | |
1347 | log("syslogin_write_entry: Invalid type field"); | |
1348 | return 0; | |
1349 | } | |
564dd50a | 1350 | } |
f988dce5 | 1351 | #endif /* USE_LOGIN */ |
1d7b9b20 | 1352 | |
1353 | /* end of file log-syslogin.c */ | |
1354 | ||
1d7b9b20 | 1355 | /** |
564dd50a | 1356 | ** Low-level lastlog functions |
1d7b9b20 | 1357 | **/ |
1358 | ||
1359 | #ifdef USE_LASTLOG | |
a05a70ab | 1360 | #define LL_FILE 1 |
1361 | #define LL_DIR 2 | |
1362 | #define LL_OTHER 3 | |
1d7b9b20 | 1363 | |
1d7b9b20 | 1364 | static void |
564dd50a | 1365 | lastlog_construct(struct logininfo *li, struct lastlog *last) |
1366 | { | |
1d7b9b20 | 1367 | /* clear the structure */ |
dbaa2e87 | 1368 | memset(last, '\0', sizeof(*last)); |
2b87da3b | 1369 | |
a05a70ab | 1370 | (void)line_stripname(last->ll_line, li->line, sizeof(last->ll_line)); |
5abcdf8e | 1371 | strlcpy(last->ll_host, li->hostname, |
1372 | MIN_SIZEOF(last->ll_host, li->hostname)); | |
1d7b9b20 | 1373 | last->ll_time = li->tv_sec; |
564dd50a | 1374 | } |
1d7b9b20 | 1375 | |
1d7b9b20 | 1376 | static int |
564dd50a | 1377 | lastlog_filetype(char *filename) |
1378 | { | |
1d7b9b20 | 1379 | struct stat st; |
1380 | ||
a05a70ab | 1381 | if (stat(LASTLOG_FILE, &st) != 0) { |
2b87da3b | 1382 | log("lastlog_perform_login: Couldn't stat %s: %s", LASTLOG_FILE, |
a05a70ab | 1383 | strerror(errno)); |
1d7b9b20 | 1384 | return 0; |
1385 | } | |
1d7b9b20 | 1386 | if (S_ISDIR(st.st_mode)) |
1387 | return LL_DIR; | |
1388 | else if (S_ISREG(st.st_mode)) | |
1389 | return LL_FILE; | |
1390 | else | |
1391 | return LL_OTHER; | |
564dd50a | 1392 | } |
1d7b9b20 | 1393 | |
1394 | ||
1395 | /* open the file (using filemode) and seek to the login entry */ | |
1396 | static int | |
564dd50a | 1397 | lastlog_openseek(struct logininfo *li, int *fd, int filemode) |
1398 | { | |
1d7b9b20 | 1399 | off_t offset; |
1400 | int type; | |
1401 | char lastlog_file[1024]; | |
1402 | ||
1403 | type = lastlog_filetype(LASTLOG_FILE); | |
1404 | switch (type) { | |
d8caae24 | 1405 | case LL_FILE: |
1406 | strlcpy(lastlog_file, LASTLOG_FILE, sizeof(lastlog_file)); | |
1407 | break; | |
1408 | case LL_DIR: | |
1409 | snprintf(lastlog_file, sizeof(lastlog_file), "%s/%s", | |
1410 | LASTLOG_FILE, li->username); | |
1411 | break; | |
1412 | default: | |
1413 | log("lastlog_openseek: %.100s is not a file or directory!", | |
1414 | LASTLOG_FILE); | |
1415 | return 0; | |
a05a70ab | 1416 | } |
1d7b9b20 | 1417 | |
1418 | *fd = open(lastlog_file, filemode); | |
1419 | if ( *fd < 0) { | |
9f32ceb4 | 1420 | debug("lastlog_openseek: Couldn't open %s: %s", |
1d7b9b20 | 1421 | lastlog_file, strerror(errno)); |
1422 | return 0; | |
1423 | } | |
2b87da3b | 1424 | |
d93a7e5a | 1425 | if (type == LL_FILE) { |
1426 | /* find this uid's offset in the lastlog file */ | |
d9d47a26 | 1427 | offset = (off_t) ((long)li->uid * sizeof(struct lastlog)); |
1d7b9b20 | 1428 | |
d93a7e5a | 1429 | if ( lseek(*fd, offset, SEEK_SET) != offset ) { |
1430 | log("lastlog_openseek: %s->lseek(): %s", | |
2b87da3b | 1431 | lastlog_file, strerror(errno)); |
d93a7e5a | 1432 | return 0; |
1433 | } | |
1d7b9b20 | 1434 | } |
2b87da3b | 1435 | |
1d7b9b20 | 1436 | return 1; |
564dd50a | 1437 | } |
1d7b9b20 | 1438 | |
1439 | static int | |
564dd50a | 1440 | lastlog_perform_login(struct logininfo *li) |
1441 | { | |
1d7b9b20 | 1442 | struct lastlog last; |
1443 | int fd; | |
1444 | ||
1445 | /* create our struct lastlog */ | |
1446 | lastlog_construct(li, &last); | |
1447 | ||
1a022229 | 1448 | if (!lastlog_openseek(li, &fd, O_RDWR|O_CREAT)) |
1449 | return(0); | |
2b87da3b | 1450 | |
1d7b9b20 | 1451 | /* write the entry */ |
1a022229 | 1452 | if (atomicio(write, fd, &last, sizeof(last)) != sizeof(last)) { |
1453 | close(fd); | |
1454 | log("lastlog_write_filemode: Error writing to %s: %s", | |
1455 | LASTLOG_FILE, strerror(errno)); | |
1d7b9b20 | 1456 | return 0; |
a05a70ab | 1457 | } |
1a022229 | 1458 | |
1459 | close(fd); | |
1460 | return 1; | |
564dd50a | 1461 | } |
1d7b9b20 | 1462 | |
1d7b9b20 | 1463 | int |
564dd50a | 1464 | lastlog_write_entry(struct logininfo *li) |
1465 | { | |
1d7b9b20 | 1466 | switch(li->type) { |
1467 | case LTYPE_LOGIN: | |
1468 | return lastlog_perform_login(li); | |
1469 | default: | |
1470 | log("lastlog_write_entry: Invalid type field"); | |
1471 | return 0; | |
1472 | } | |
564dd50a | 1473 | } |
1d7b9b20 | 1474 | |
1d7b9b20 | 1475 | static void |
564dd50a | 1476 | lastlog_populate_entry(struct logininfo *li, struct lastlog *last) |
1477 | { | |
1d7b9b20 | 1478 | line_fullname(li->line, last->ll_line, sizeof(li->line)); |
2b87da3b | 1479 | strlcpy(li->hostname, last->ll_host, |
5abcdf8e | 1480 | MIN_SIZEOF(li->hostname, last->ll_host)); |
1d7b9b20 | 1481 | li->tv_sec = last->ll_time; |
564dd50a | 1482 | } |
1d7b9b20 | 1483 | |
1d7b9b20 | 1484 | int |
564dd50a | 1485 | lastlog_get_entry(struct logininfo *li) |
1486 | { | |
1d7b9b20 | 1487 | struct lastlog last; |
1488 | int fd; | |
1489 | ||
1490 | if (lastlog_openseek(li, &fd, O_RDONLY)) { | |
9f32ceb4 | 1491 | if (atomicio(read, fd, &last, sizeof(last)) != sizeof(last)) { |
1492 | log("lastlog_get_entry: Error reading from %s: %s", | |
1d7b9b20 | 1493 | LASTLOG_FILE, strerror(errno)); |
1494 | return 0; | |
1495 | } else { | |
1496 | lastlog_populate_entry(li, &last); | |
1497 | return 1; | |
1498 | } | |
a05a70ab | 1499 | } else { |
2b87da3b | 1500 | return 0; |
a05a70ab | 1501 | } |
564dd50a | 1502 | } |
f988dce5 | 1503 | #endif /* USE_LASTLOG */ |