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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 | |
40d0f6b9 | 126 | configure.ac and loginrec.c. (You have to build logintest yourself |
564dd50a | 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; | |
9e127e27 | 451 | login_set_current_time(li); |
7e2d5fa4 | 452 | # ifdef USE_UTMP |
453 | utmp_write_entry(li); | |
454 | # endif | |
455 | # ifdef USE_WTMP | |
456 | wtmp_write_entry(li); | |
457 | # endif | |
458 | # ifdef USE_UTMPX | |
459 | utmpx_write_entry(li); | |
460 | # endif | |
461 | # ifdef USE_WTMPX | |
462 | wtmpx_write_entry(li); | |
463 | # endif | |
464 | return 0; | |
465 | } | |
466 | #endif | |
467 | ||
564dd50a | 468 | /** |
469 | ** getlast_entry: Call low-level functions to retrieve the last login | |
470 | ** time. | |
471 | **/ | |
1d7b9b20 | 472 | |
564dd50a | 473 | /* take the uid in li and return the last login time */ |
1d7b9b20 | 474 | int |
564dd50a | 475 | getlast_entry(struct logininfo *li) |
476 | { | |
477 | #ifdef USE_LASTLOG | |
9f32ceb4 | 478 | return(lastlog_get_entry(li)); |
a05a70ab | 479 | #else /* !USE_LASTLOG */ |
1d7b9b20 | 480 | |
a05a70ab | 481 | #ifdef DISABLE_LASTLOG |
2b87da3b | 482 | /* On some systems we shouldn't even try to obtain last login |
3f45f1c3 | 483 | * time, e.g. AIX */ |
484 | return 0; | |
a05a70ab | 485 | # else /* DISABLE_LASTLOG */ |
564dd50a | 486 | /* Try to retrieve the last login time from wtmp */ |
a05a70ab | 487 | # if defined(USE_WTMP) && (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) |
564dd50a | 488 | /* retrieve last login time from utmp */ |
a05a70ab | 489 | return (wtmp_get_entry(li)); |
490 | # else /* defined(USE_WTMP) && (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) */ | |
564dd50a | 491 | /* If wtmp isn't available, try wtmpx */ |
a05a70ab | 492 | # if defined(USE_WTMPX) && (defined(HAVE_TIME_IN_UTMPX) || defined(HAVE_TV_IN_UTMPX)) |
564dd50a | 493 | /* retrieve last login time from utmpx */ |
a05a70ab | 494 | return (wtmpx_get_entry(li)); |
495 | # else | |
564dd50a | 496 | /* Give up: No means of retrieving last login time */ |
497 | return 0; | |
a05a70ab | 498 | # endif /* USE_WTMPX && (HAVE_TIME_IN_UTMPX || HAVE_TV_IN_UTMPX) */ |
499 | # endif /* USE_WTMP && (HAVE_TIME_IN_UTMP || HAVE_TV_IN_UTMP) */ | |
2b87da3b | 500 | # endif /* DISABLE_LASTLOG */ |
a05a70ab | 501 | #endif /* USE_LASTLOG */ |
564dd50a | 502 | } |
1d7b9b20 | 503 | |
504 | ||
1d7b9b20 | 505 | |
506 | /* | |
564dd50a | 507 | * 'line' string utility functions |
508 | * | |
509 | * These functions process the 'line' string into one of three forms: | |
510 | * | |
1d7b9b20 | 511 | * 1. The full filename (including '/dev') |
512 | * 2. The stripped name (excluding '/dev') | |
564dd50a | 513 | * 3. The abbreviated name (e.g. /dev/ttyp00 -> yp00 |
514 | * /dev/pts/1 -> ts/1 ) | |
1d7b9b20 | 515 | * |
516 | * Form 3 is used on some systems to identify a .tmp.? entry when | |
517 | * attempting to remove it. Typically both addition and removal is | |
564dd50a | 518 | * performed by one application - say, sshd - so as long as the choice |
519 | * uniquely identifies a terminal it's ok. | |
1d7b9b20 | 520 | */ |
521 | ||
522 | ||
564dd50a | 523 | /* line_fullname(): add the leading '/dev/' if it doesn't exist make |
524 | * sure dst has enough space, if not just copy src (ugh) */ | |
1d7b9b20 | 525 | char * |
564dd50a | 526 | line_fullname(char *dst, const char *src, int dstsize) |
527 | { | |
1d7b9b20 | 528 | memset(dst, '\0', dstsize); |
89d7510a | 529 | if ((strncmp(src, "/dev/", 5) == 0) || (dstsize < (strlen(src) + 5))) { |
1d7b9b20 | 530 | strlcpy(dst, src, dstsize); |
89d7510a | 531 | } else { |
a4d05724 | 532 | strlcpy(dst, "/dev/", dstsize); |
1d7b9b20 | 533 | strlcat(dst, src, dstsize); |
534 | } | |
535 | return dst; | |
536 | } | |
537 | ||
564dd50a | 538 | /* line_stripname(): strip the leading '/dev' if it exists, return dst */ |
1d7b9b20 | 539 | char * |
564dd50a | 540 | line_stripname(char *dst, const char *src, int dstsize) |
541 | { | |
1d7b9b20 | 542 | memset(dst, '\0', dstsize); |
543 | if (strncmp(src, "/dev/", 5) == 0) | |
89d7510a | 544 | strlcpy(dst, src + 5, dstsize); |
1d7b9b20 | 545 | else |
546 | strlcpy(dst, src, dstsize); | |
547 | return dst; | |
564dd50a | 548 | } |
549 | ||
564dd50a | 550 | /* line_abbrevname(): Return the abbreviated (usually four-character) |
551 | * form of the line (Just use the last <dstsize> characters of the | |
552 | * full name.) | |
553 | * | |
554 | * NOTE: use strncpy because we do NOT necessarily want zero | |
555 | * termination */ | |
1d7b9b20 | 556 | char * |
2b87da3b | 557 | line_abbrevname(char *dst, const char *src, int dstsize) |
a05a70ab | 558 | { |
559 | size_t len; | |
2b87da3b | 560 | |
1d7b9b20 | 561 | memset(dst, '\0', dstsize); |
2b87da3b | 562 | |
daaff4d5 | 563 | /* Always skip prefix if present */ |
564 | if (strncmp(src, "/dev/", 5) == 0) | |
565 | src += 5; | |
2b87da3b | 566 | |
a05a70ab | 567 | len = strlen(src); |
568 | ||
daaff4d5 | 569 | if (len > 0) { |
570 | if (((int)len - dstsize) > 0) | |
571 | src += ((int)len - dstsize); | |
572 | ||
573 | /* note: _don't_ change this to strlcpy */ | |
2b87da3b | 574 | strncpy(dst, src, (size_t)dstsize); |
a05a70ab | 575 | } |
2b87da3b | 576 | |
1d7b9b20 | 577 | return dst; |
578 | } | |
579 | ||
1d7b9b20 | 580 | /** |
581 | ** utmp utility functions | |
564dd50a | 582 | ** |
583 | ** These functions manipulate struct utmp, taking system differences | |
584 | ** into account. | |
1d7b9b20 | 585 | **/ |
586 | ||
587 | #if defined(USE_UTMP) || defined (USE_WTMP) || defined (USE_LOGIN) | |
588 | ||
1d7b9b20 | 589 | /* build the utmp structure */ |
590 | void | |
564dd50a | 591 | set_utmp_time(struct logininfo *li, struct utmp *ut) |
592 | { | |
a05a70ab | 593 | # ifdef HAVE_TV_IN_UTMP |
1d7b9b20 | 594 | ut->ut_tv.tv_sec = li->tv_sec; |
595 | ut->ut_tv.tv_usec = li->tv_usec; | |
a05a70ab | 596 | # else |
1d7b9b20 | 597 | # ifdef HAVE_TIME_IN_UTMP |
598 | ut->ut_time = li->tv_sec; | |
599 | # endif | |
a05a70ab | 600 | # endif |
1d7b9b20 | 601 | } |
602 | ||
603 | void | |
604 | construct_utmp(struct logininfo *li, | |
564dd50a | 605 | struct utmp *ut) |
606 | { | |
dbaa2e87 | 607 | memset(ut, '\0', sizeof(*ut)); |
5abcdf8e | 608 | |
609 | /* First fill out fields used for both logins and logouts */ | |
610 | ||
a05a70ab | 611 | # ifdef HAVE_ID_IN_UTMP |
1d7b9b20 | 612 | line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id)); |
a05a70ab | 613 | # endif |
1d7b9b20 | 614 | |
a05a70ab | 615 | # ifdef HAVE_TYPE_IN_UTMP |
5abcdf8e | 616 | /* This is done here to keep utmp constants out of struct logininfo */ |
1d7b9b20 | 617 | switch (li->type) { |
618 | case LTYPE_LOGIN: | |
619 | ut->ut_type = USER_PROCESS; | |
1a23ac2c | 620 | #ifdef _CRAY |
621 | cray_set_tmpdir(ut); | |
622 | #endif | |
1d7b9b20 | 623 | break; |
624 | case LTYPE_LOGOUT: | |
625 | ut->ut_type = DEAD_PROCESS; | |
1a23ac2c | 626 | #ifdef _CRAY |
627 | cray_retain_utmp(ut, li->pid); | |
628 | #endif | |
1d7b9b20 | 629 | break; |
630 | } | |
a05a70ab | 631 | # endif |
5abcdf8e | 632 | set_utmp_time(li, ut); |
1d7b9b20 | 633 | |
5abcdf8e | 634 | line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line)); |
a05a70ab | 635 | |
636 | # ifdef HAVE_PID_IN_UTMP | |
1d7b9b20 | 637 | ut->ut_pid = li->pid; |
a05a70ab | 638 | # endif |
5abcdf8e | 639 | |
640 | /* If we're logging out, leave all other fields blank */ | |
641 | if (li->type == LTYPE_LOGOUT) | |
642 | return; | |
643 | ||
a05a70ab | 644 | /* |
645 | * These fields are only used when logging in, and are blank | |
2b87da3b | 646 | * for logouts. |
a05a70ab | 647 | */ |
5abcdf8e | 648 | |
649 | /* Use strncpy because we don't necessarily want null termination */ | |
dc2a6d09 | 650 | strncpy(ut->ut_name, li->username, MIN_SIZEOF(ut->ut_name, li->username)); |
a05a70ab | 651 | # ifdef HAVE_HOST_IN_UTMP |
5abcdf8e | 652 | strncpy(ut->ut_host, li->hostname, MIN_SIZEOF(ut->ut_host, li->hostname)); |
a05a70ab | 653 | # endif |
654 | # ifdef HAVE_ADDR_IN_UTMP | |
564dd50a | 655 | /* this is just a 32-bit IP address */ |
656 | if (li->hostaddr.sa.sa_family == AF_INET) | |
657 | ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; | |
2b87da3b | 658 | # endif |
564dd50a | 659 | } |
a05a70ab | 660 | #endif /* USE_UTMP || USE_WTMP || USE_LOGIN */ |
564dd50a | 661 | |
1d7b9b20 | 662 | /** |
663 | ** utmpx utility functions | |
564dd50a | 664 | ** |
665 | ** These functions manipulate struct utmpx, accounting for system | |
666 | ** variations. | |
1d7b9b20 | 667 | **/ |
668 | ||
669 | #if defined(USE_UTMPX) || defined (USE_WTMPX) | |
1d7b9b20 | 670 | /* build the utmpx structure */ |
671 | void | |
564dd50a | 672 | set_utmpx_time(struct logininfo *li, struct utmpx *utx) |
673 | { | |
a05a70ab | 674 | # ifdef HAVE_TV_IN_UTMPX |
1d7b9b20 | 675 | utx->ut_tv.tv_sec = li->tv_sec; |
676 | utx->ut_tv.tv_usec = li->tv_usec; | |
a05a70ab | 677 | # else /* HAVE_TV_IN_UTMPX */ |
1d7b9b20 | 678 | # ifdef HAVE_TIME_IN_UTMPX |
679 | utx->ut_time = li->tv_sec; | |
a05a70ab | 680 | # endif /* HAVE_TIME_IN_UTMPX */ |
681 | # endif /* HAVE_TV_IN_UTMPX */ | |
1d7b9b20 | 682 | } |
683 | ||
684 | void | |
564dd50a | 685 | construct_utmpx(struct logininfo *li, struct utmpx *utx) |
686 | { | |
dbaa2e87 | 687 | memset(utx, '\0', sizeof(*utx)); |
daaff4d5 | 688 | # ifdef HAVE_ID_IN_UTMPX |
1d7b9b20 | 689 | line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id)); |
daaff4d5 | 690 | # endif |
1d7b9b20 | 691 | |
692 | /* this is done here to keep utmp constants out of loginrec.h */ | |
693 | switch (li->type) { | |
694 | case LTYPE_LOGIN: | |
695 | utx->ut_type = USER_PROCESS; | |
696 | break; | |
697 | case LTYPE_LOGOUT: | |
698 | utx->ut_type = DEAD_PROCESS; | |
699 | break; | |
700 | } | |
1d7b9b20 | 701 | line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line)); |
1d7b9b20 | 702 | set_utmpx_time(li, utx); |
5abcdf8e | 703 | utx->ut_pid = li->pid; |
704 | ||
705 | if (li->type == LTYPE_LOGOUT) | |
706 | return; | |
707 | ||
a05a70ab | 708 | /* |
709 | * These fields are only used when logging in, and are blank | |
2b87da3b | 710 | * for logouts. |
a05a70ab | 711 | */ |
5abcdf8e | 712 | |
713 | /* strncpy(): Don't necessarily want null termination */ | |
dc2a6d09 | 714 | strncpy(utx->ut_name, li->username, MIN_SIZEOF(utx->ut_name, li->username)); |
a05a70ab | 715 | # ifdef HAVE_HOST_IN_UTMPX |
5abcdf8e | 716 | strncpy(utx->ut_host, li->hostname, MIN_SIZEOF(utx->ut_host, li->hostname)); |
a05a70ab | 717 | # endif |
718 | # ifdef HAVE_ADDR_IN_UTMPX | |
764d4113 | 719 | /* this is just a 32-bit IP address */ |
720 | if (li->hostaddr.sa.sa_family == AF_INET) | |
721 | utx->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr; | |
a05a70ab | 722 | # endif |
723 | # ifdef HAVE_SYSLEN_IN_UTMPX | |
5abcdf8e | 724 | /* ut_syslen is the length of the utx_host string */ |
725 | utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host)); | |
a05a70ab | 726 | # endif |
564dd50a | 727 | } |
a05a70ab | 728 | #endif /* USE_UTMPX || USE_WTMPX */ |
1d7b9b20 | 729 | |
730 | /** | |
564dd50a | 731 | ** Low-level utmp functions |
1d7b9b20 | 732 | **/ |
733 | ||
734 | /* FIXME: (ATL) utmp_write_direct needs testing */ | |
1d7b9b20 | 735 | #ifdef USE_UTMP |
736 | ||
1d7b9b20 | 737 | /* if we can, use pututline() etc. */ |
a05a70ab | 738 | # if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \ |
739 | defined(HAVE_PUTUTLINE) | |
1d7b9b20 | 740 | # define UTMP_USE_LIBRARY |
a05a70ab | 741 | # endif |
1d7b9b20 | 742 | |
743 | ||
744 | /* write a utmp entry with the system's help (pututline() and pals) */ | |
a05a70ab | 745 | # ifdef UTMP_USE_LIBRARY |
1d7b9b20 | 746 | static int |
564dd50a | 747 | utmp_write_library(struct logininfo *li, struct utmp *ut) |
748 | { | |
1d7b9b20 | 749 | setutent(); |
750 | pututline(ut); | |
751 | ||
a05a70ab | 752 | # ifdef HAVE_ENDUTENT |
1d7b9b20 | 753 | endutent(); |
a05a70ab | 754 | # endif |
1d7b9b20 | 755 | return 1; |
564dd50a | 756 | } |
a05a70ab | 757 | # else /* UTMP_USE_LIBRARY */ |
1d7b9b20 | 758 | |
759 | /* write a utmp entry direct to the file */ | |
564dd50a | 760 | /* This is a slightly modification of code in OpenBSD's login.c */ |
1d7b9b20 | 761 | static int |
564dd50a | 762 | utmp_write_direct(struct logininfo *li, struct utmp *ut) |
763 | { | |
1d7b9b20 | 764 | struct utmp old_ut; |
765 | register int fd; | |
766 | int tty; | |
767 | ||
5abcdf8e | 768 | /* FIXME: (ATL) ttyslot() needs local implementation */ |
dbaa2e87 | 769 | |
698d107e | 770 | #if defined(HAVE_GETTTYENT) |
dbaa2e87 | 771 | register struct ttyent *ty; |
772 | ||
773 | tty=0; | |
774 | ||
775 | setttyent(); | |
776 | while ((struct ttyent *)0 != (ty = getttyent())) { | |
777 | tty++; | |
778 | if (!strncmp(ty->ty_name, ut->ut_line, sizeof(ut->ut_line))) | |
779 | break; | |
780 | } | |
781 | endttyent(); | |
782 | ||
783 | if((struct ttyent *)0 == ty) { | |
784 | log("utmp_write_entry: tty not found"); | |
785 | return(1); | |
786 | } | |
787 | #else /* FIXME */ | |
788 | ||
1d7b9b20 | 789 | tty = ttyslot(); /* seems only to work for /dev/ttyp? style names */ |
790 | ||
698d107e | 791 | #endif /* HAVE_GETTTYENT */ |
dbaa2e87 | 792 | |
1d7b9b20 | 793 | if (tty > 0 && (fd = open(UTMP_FILE, O_RDWR|O_CREAT, 0644)) >= 0) { |
794 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); | |
795 | /* | |
796 | * Prevent luser from zero'ing out ut_host. | |
797 | * If the new ut_line is empty but the old one is not | |
dc2a6d09 | 798 | * and ut_line and ut_name match, preserve the old ut_line. |
1d7b9b20 | 799 | */ |
2b87da3b | 800 | if (atomicio(read, fd, &old_ut, sizeof(old_ut)) == sizeof(old_ut) && |
801 | (ut->ut_host[0] == '\0') && (old_ut.ut_host[0] != '\0') && | |
802 | (strncmp(old_ut.ut_line, ut->ut_line, sizeof(ut->ut_line)) == 0) && | |
dc2a6d09 | 803 | (strncmp(old_ut.ut_name, ut->ut_name, sizeof(ut->ut_name)) == 0)) { |
1d7b9b20 | 804 | (void)memcpy(ut->ut_host, old_ut.ut_host, sizeof(ut->ut_host)); |
9f32ceb4 | 805 | } |
2b87da3b | 806 | |
1d7b9b20 | 807 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); |
32eec038 | 808 | if (atomicio(write, fd, ut, sizeof(*ut)) != sizeof(*ut)) |
1d7b9b20 | 809 | log("utmp_write_direct: error writing %s: %s", |
5abcdf8e | 810 | UTMP_FILE, strerror(errno)); |
2b87da3b | 811 | |
1d7b9b20 | 812 | (void)close(fd); |
813 | return 1; | |
9f32ceb4 | 814 | } else { |
1d7b9b20 | 815 | return 0; |
9f32ceb4 | 816 | } |
564dd50a | 817 | } |
a05a70ab | 818 | # endif /* UTMP_USE_LIBRARY */ |
1d7b9b20 | 819 | |
820 | static int | |
564dd50a | 821 | utmp_perform_login(struct logininfo *li) |
822 | { | |
1d7b9b20 | 823 | struct utmp ut; |
824 | ||
825 | construct_utmp(li, &ut); | |
a05a70ab | 826 | # ifdef UTMP_USE_LIBRARY |
1d7b9b20 | 827 | if (!utmp_write_library(li, &ut)) { |
5abcdf8e | 828 | log("utmp_perform_login: utmp_write_library() failed"); |
1d7b9b20 | 829 | return 0; |
830 | } | |
a05a70ab | 831 | # else |
1d7b9b20 | 832 | if (!utmp_write_direct(li, &ut)) { |
833 | log("utmp_perform_login: utmp_write_direct() failed"); | |
834 | return 0; | |
835 | } | |
a05a70ab | 836 | # endif |
1d7b9b20 | 837 | return 1; |
564dd50a | 838 | } |
1d7b9b20 | 839 | |
840 | ||
841 | static int | |
564dd50a | 842 | utmp_perform_logout(struct logininfo *li) |
843 | { | |
1d7b9b20 | 844 | struct utmp ut; |
845 | ||
5abcdf8e | 846 | construct_utmp(li, &ut); |
a05a70ab | 847 | # ifdef UTMP_USE_LIBRARY |
5abcdf8e | 848 | if (!utmp_write_library(li, &ut)) { |
849 | log("utmp_perform_logout: utmp_write_library() failed"); | |
850 | return 0; | |
851 | } | |
a05a70ab | 852 | # else |
5abcdf8e | 853 | if (!utmp_write_direct(li, &ut)) { |
854 | log("utmp_perform_logout: utmp_write_direct() failed"); | |
855 | return 0; | |
856 | } | |
a05a70ab | 857 | # endif |
1d7b9b20 | 858 | return 1; |
564dd50a | 859 | } |
1d7b9b20 | 860 | |
861 | ||
862 | int | |
564dd50a | 863 | utmp_write_entry(struct logininfo *li) |
864 | { | |
1d7b9b20 | 865 | switch(li->type) { |
866 | case LTYPE_LOGIN: | |
867 | return utmp_perform_login(li); | |
868 | ||
869 | case LTYPE_LOGOUT: | |
870 | return utmp_perform_logout(li); | |
871 | ||
872 | default: | |
873 | log("utmp_write_entry: invalid type field"); | |
874 | return 0; | |
875 | } | |
564dd50a | 876 | } |
a05a70ab | 877 | #endif /* USE_UTMP */ |
1d7b9b20 | 878 | |
879 | ||
880 | /** | |
564dd50a | 881 | ** Low-level utmpx functions |
1d7b9b20 | 882 | **/ |
883 | ||
884 | /* not much point if we don't want utmpx entries */ | |
885 | #ifdef USE_UTMPX | |
886 | ||
1d7b9b20 | 887 | /* if we have the wherewithall, use pututxline etc. */ |
a05a70ab | 888 | # if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) && \ |
889 | defined(HAVE_PUTUTXLINE) | |
1d7b9b20 | 890 | # define UTMPX_USE_LIBRARY |
a05a70ab | 891 | # endif |
1d7b9b20 | 892 | |
893 | ||
894 | /* write a utmpx entry with the system's help (pututxline() and pals) */ | |
a05a70ab | 895 | # ifdef UTMPX_USE_LIBRARY |
1d7b9b20 | 896 | static int |
564dd50a | 897 | utmpx_write_library(struct logininfo *li, struct utmpx *utx) |
898 | { | |
1d7b9b20 | 899 | setutxent(); |
900 | pututxline(utx); | |
901 | ||
a05a70ab | 902 | # ifdef HAVE_ENDUTXENT |
1d7b9b20 | 903 | endutxent(); |
a05a70ab | 904 | # endif |
1d7b9b20 | 905 | return 1; |
564dd50a | 906 | } |
1d7b9b20 | 907 | |
a05a70ab | 908 | # else /* UTMPX_USE_LIBRARY */ |
1d7b9b20 | 909 | |
910 | /* write a utmp entry direct to the file */ | |
911 | static int | |
564dd50a | 912 | utmpx_write_direct(struct logininfo *li, struct utmpx *utx) |
2b87da3b | 913 | { |
1d7b9b20 | 914 | log("utmpx_write_direct: not implemented!"); |
915 | return 0; | |
564dd50a | 916 | } |
a05a70ab | 917 | # endif /* UTMPX_USE_LIBRARY */ |
1d7b9b20 | 918 | |
919 | static int | |
564dd50a | 920 | utmpx_perform_login(struct logininfo *li) |
921 | { | |
1d7b9b20 | 922 | struct utmpx utx; |
923 | ||
924 | construct_utmpx(li, &utx); | |
a05a70ab | 925 | # ifdef UTMPX_USE_LIBRARY |
1d7b9b20 | 926 | if (!utmpx_write_library(li, &utx)) { |
927 | log("utmpx_perform_login: utmp_write_library() failed"); | |
928 | return 0; | |
929 | } | |
a05a70ab | 930 | # else |
1d7b9b20 | 931 | if (!utmpx_write_direct(li, &ut)) { |
932 | log("utmpx_perform_login: utmp_write_direct() failed"); | |
933 | return 0; | |
934 | } | |
a05a70ab | 935 | # endif |
1d7b9b20 | 936 | return 1; |
564dd50a | 937 | } |
1d7b9b20 | 938 | |
939 | ||
940 | static int | |
564dd50a | 941 | utmpx_perform_logout(struct logininfo *li) |
942 | { | |
1d7b9b20 | 943 | struct utmpx utx; |
944 | ||
945 | memset(&utx, '\0', sizeof(utx)); | |
946 | set_utmpx_time(li, &utx); | |
947 | line_stripname(utx.ut_line, li->line, sizeof(utx.ut_line)); | |
a05a70ab | 948 | # ifdef HAVE_ID_IN_UTMPX |
1d7b9b20 | 949 | line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id)); |
a05a70ab | 950 | # endif |
951 | # ifdef HAVE_TYPE_IN_UTMPX | |
1d7b9b20 | 952 | utx.ut_type = DEAD_PROCESS; |
a05a70ab | 953 | # endif |
1d7b9b20 | 954 | |
a05a70ab | 955 | # ifdef UTMPX_USE_LIBRARY |
1d7b9b20 | 956 | utmpx_write_library(li, &utx); |
a05a70ab | 957 | # else |
1d7b9b20 | 958 | utmpx_write_direct(li, &utx); |
a05a70ab | 959 | # endif |
1d7b9b20 | 960 | return 1; |
564dd50a | 961 | } |
1d7b9b20 | 962 | |
1d7b9b20 | 963 | int |
564dd50a | 964 | utmpx_write_entry(struct logininfo *li) |
965 | { | |
1d7b9b20 | 966 | switch(li->type) { |
967 | case LTYPE_LOGIN: | |
968 | return utmpx_perform_login(li); | |
969 | case LTYPE_LOGOUT: | |
970 | return utmpx_perform_logout(li); | |
971 | default: | |
972 | log("utmpx_write_entry: invalid type field"); | |
973 | return 0; | |
974 | } | |
564dd50a | 975 | } |
a05a70ab | 976 | #endif /* USE_UTMPX */ |
1d7b9b20 | 977 | |
978 | ||
979 | /** | |
564dd50a | 980 | ** Low-level wtmp functions |
1d7b9b20 | 981 | **/ |
982 | ||
2b87da3b | 983 | #ifdef USE_WTMP |
1d7b9b20 | 984 | |
1d7b9b20 | 985 | /* write a wtmp entry direct to the end of the file */ |
564dd50a | 986 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
1d7b9b20 | 987 | static int |
564dd50a | 988 | wtmp_write(struct logininfo *li, struct utmp *ut) |
989 | { | |
1d7b9b20 | 990 | struct stat buf; |
991 | int fd, ret = 1; | |
992 | ||
993 | if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) < 0) { | |
994 | log("wtmp_write: problem writing %s: %s", | |
995 | WTMP_FILE, strerror(errno)); | |
996 | return 0; | |
997 | } | |
2b87da3b | 998 | if (fstat(fd, &buf) == 0) |
9f32ceb4 | 999 | if (atomicio(write, fd, ut, sizeof(*ut)) != sizeof(*ut)) { |
1d7b9b20 | 1000 | ftruncate(fd, buf.st_size); |
1001 | log("wtmp_write: problem writing %s: %s", | |
1002 | WTMP_FILE, strerror(errno)); | |
1003 | ret = 0; | |
1004 | } | |
1005 | (void)close(fd); | |
1d7b9b20 | 1006 | return ret; |
564dd50a | 1007 | } |
1d7b9b20 | 1008 | |
1d7b9b20 | 1009 | static int |
a05a70ab | 1010 | wtmp_perform_login(struct logininfo *li) |
1011 | { | |
1d7b9b20 | 1012 | struct utmp ut; |
1013 | ||
1014 | construct_utmp(li, &ut); | |
1015 | return wtmp_write(li, &ut); | |
564dd50a | 1016 | } |
1d7b9b20 | 1017 | |
1018 | ||
1019 | static int | |
564dd50a | 1020 | wtmp_perform_logout(struct logininfo *li) |
1021 | { | |
1d7b9b20 | 1022 | struct utmp ut; |
1023 | ||
1024 | construct_utmp(li, &ut); | |
1d7b9b20 | 1025 | return wtmp_write(li, &ut); |
564dd50a | 1026 | } |
1d7b9b20 | 1027 | |
1028 | ||
1029 | int | |
564dd50a | 1030 | wtmp_write_entry(struct logininfo *li) |
1031 | { | |
1d7b9b20 | 1032 | switch(li->type) { |
1033 | case LTYPE_LOGIN: | |
1034 | return wtmp_perform_login(li); | |
1035 | case LTYPE_LOGOUT: | |
1036 | return wtmp_perform_logout(li); | |
1037 | default: | |
1038 | log("wtmp_write_entry: invalid type field"); | |
1039 | return 0; | |
1040 | } | |
564dd50a | 1041 | } |
1d7b9b20 | 1042 | |
1043 | ||
5abcdf8e | 1044 | /* Notes on fetching login data from wtmp/wtmpx |
2b87da3b | 1045 | * |
5abcdf8e | 1046 | * Logouts are usually recorded with (amongst other things) a blank |
1047 | * username on a given tty line. However, some systems (HP-UX is one) | |
1048 | * leave all fields set, but change the ut_type field to DEAD_PROCESS. | |
1049 | * | |
1050 | * Since we're only looking for logins here, we know that the username | |
1051 | * must be set correctly. On systems that leave it in, we check for | |
1052 | * ut_type==USER_PROCESS (indicating a login.) | |
1053 | * | |
1054 | * Portability: Some systems may set something other than USER_PROCESS | |
1055 | * to indicate a login process. I don't know of any as I write. Also, | |
1056 | * it's possible that some systems may both leave the username in | |
1057 | * place and not have ut_type. | |
1058 | */ | |
1059 | ||
5abcdf8e | 1060 | /* return true if this wtmp entry indicates a login */ |
1061 | static int | |
1062 | wtmp_islogin(struct logininfo *li, struct utmp *ut) | |
1063 | { | |
2b87da3b | 1064 | if (strncmp(li->username, ut->ut_name, |
dc2a6d09 | 1065 | MIN_SIZEOF(li->username, ut->ut_name)) == 0) { |
a05a70ab | 1066 | # ifdef HAVE_TYPE_IN_UTMP |
5abcdf8e | 1067 | if (ut->ut_type & USER_PROCESS) |
1068 | return 1; | |
a05a70ab | 1069 | # else |
5abcdf8e | 1070 | return 1; |
a05a70ab | 1071 | # endif |
5abcdf8e | 1072 | } |
1073 | return 0; | |
1074 | } | |
1075 | ||
1d7b9b20 | 1076 | int |
564dd50a | 1077 | wtmp_get_entry(struct logininfo *li) |
1078 | { | |
1d7b9b20 | 1079 | struct stat st; |
1080 | struct utmp ut; | |
5abcdf8e | 1081 | int fd, found=0; |
1082 | ||
1083 | /* Clear the time entries in our logininfo */ | |
1084 | li->tv_sec = li->tv_usec = 0; | |
1d7b9b20 | 1085 | |
1086 | if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) { | |
1087 | log("wtmp_get_entry: problem opening %s: %s", | |
1088 | WTMP_FILE, strerror(errno)); | |
1089 | return 0; | |
1090 | } | |
2b87da3b | 1091 | if (fstat(fd, &st) != 0) { |
1d7b9b20 | 1092 | log("wtmp_get_entry: couldn't stat %s: %s", |
1093 | WTMP_FILE, strerror(errno)); | |
1094 | close(fd); | |
1095 | return 0; | |
1096 | } | |
1d7b9b20 | 1097 | |
5abcdf8e | 1098 | /* Seek to the start of the last struct utmp */ |
d9d47a26 | 1099 | if (lseek(fd, -(off_t)sizeof(struct utmp), SEEK_END) == -1) { |
5abcdf8e | 1100 | /* Looks like we've got a fresh wtmp file */ |
1101 | close(fd); | |
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | while (!found) { | |
9f32ceb4 | 1106 | if (atomicio(read, fd, &ut, sizeof(ut)) != sizeof(ut)) { |
1d7b9b20 | 1107 | log("wtmp_get_entry: read of %s failed: %s", |
1108 | WTMP_FILE, strerror(errno)); | |
1109 | close (fd); | |
1110 | return 0; | |
1111 | } | |
5abcdf8e | 1112 | if ( wtmp_islogin(li, &ut) ) { |
1113 | found = 1; | |
1114 | /* We've already checked for a time in struct | |
1115 | * utmp, in login_getlast(). */ | |
a05a70ab | 1116 | # ifdef HAVE_TIME_IN_UTMP |
1d7b9b20 | 1117 | li->tv_sec = ut.ut_time; |
a05a70ab | 1118 | # else |
1d7b9b20 | 1119 | # if HAVE_TV_IN_UTMP |
1120 | li->tv_sec = ut.ut_tv.tv_sec; | |
1121 | # endif | |
a05a70ab | 1122 | # endif |
5abcdf8e | 1123 | line_fullname(li->line, ut.ut_line, |
1124 | MIN_SIZEOF(li->line, ut.ut_line)); | |
a05a70ab | 1125 | # ifdef HAVE_HOST_IN_UTMP |
5abcdf8e | 1126 | strlcpy(li->hostname, ut.ut_host, |
1127 | MIN_SIZEOF(li->hostname, ut.ut_host)); | |
a05a70ab | 1128 | # endif |
5abcdf8e | 1129 | continue; |
1d7b9b20 | 1130 | } |
5abcdf8e | 1131 | /* Seek back 2 x struct utmp */ |
d9d47a26 | 1132 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmp)), SEEK_CUR) == -1) { |
5abcdf8e | 1133 | /* We've found the start of the file, so quit */ |
1d7b9b20 | 1134 | close (fd); |
1135 | return 0; | |
1136 | } | |
5abcdf8e | 1137 | } |
1138 | ||
1139 | /* We found an entry. Tidy up and return */ | |
1140 | close(fd); | |
1d7b9b20 | 1141 | return 1; |
564dd50a | 1142 | } |
a05a70ab | 1143 | # endif /* USE_WTMP */ |
1d7b9b20 | 1144 | |
1145 | ||
1146 | /** | |
564dd50a | 1147 | ** Low-level wtmpx functions |
1d7b9b20 | 1148 | **/ |
1149 | ||
1150 | #ifdef USE_WTMPX | |
1d7b9b20 | 1151 | /* write a wtmpx entry direct to the end of the file */ |
564dd50a | 1152 | /* This is a slight modification of code in OpenBSD's logwtmp.c */ |
1d7b9b20 | 1153 | static int |
564dd50a | 1154 | wtmpx_write(struct logininfo *li, struct utmpx *utx) |
1155 | { | |
1d7b9b20 | 1156 | struct stat buf; |
1157 | int fd, ret = 1; | |
1158 | ||
1159 | if ((fd = open(WTMPX_FILE, O_WRONLY|O_APPEND, 0)) < 0) { | |
1160 | log("wtmpx_write: problem opening %s: %s", | |
1161 | WTMPX_FILE, strerror(errno)); | |
1162 | return 0; | |
1163 | } | |
1164 | ||
2b87da3b | 1165 | if (fstat(fd, &buf) == 0) |
9f32ceb4 | 1166 | if (atomicio(write, fd, utx, sizeof(*utx)) != sizeof(*utx)) { |
1d7b9b20 | 1167 | ftruncate(fd, buf.st_size); |
1168 | log("wtmpx_write: problem writing %s: %s", | |
1169 | WTMPX_FILE, strerror(errno)); | |
1170 | ret = 0; | |
1171 | } | |
1172 | (void)close(fd); | |
1173 | ||
1174 | return ret; | |
564dd50a | 1175 | } |
1d7b9b20 | 1176 | |
1177 | ||
1178 | static int | |
564dd50a | 1179 | wtmpx_perform_login(struct logininfo *li) |
1180 | { | |
1d7b9b20 | 1181 | struct utmpx utx; |
1182 | ||
1183 | construct_utmpx(li, &utx); | |
1184 | return wtmpx_write(li, &utx); | |
564dd50a | 1185 | } |
1d7b9b20 | 1186 | |
1187 | ||
1188 | static int | |
564dd50a | 1189 | wtmpx_perform_logout(struct logininfo *li) |
1190 | { | |
1d7b9b20 | 1191 | struct utmpx utx; |
1192 | ||
1193 | construct_utmpx(li, &utx); | |
1d7b9b20 | 1194 | return wtmpx_write(li, &utx); |
564dd50a | 1195 | } |
1d7b9b20 | 1196 | |
1197 | ||
1198 | int | |
564dd50a | 1199 | wtmpx_write_entry(struct logininfo *li) |
1200 | { | |
1d7b9b20 | 1201 | switch(li->type) { |
1202 | case LTYPE_LOGIN: | |
1203 | return wtmpx_perform_login(li); | |
1204 | case LTYPE_LOGOUT: | |
1205 | return wtmpx_perform_logout(li); | |
1206 | default: | |
1207 | log("wtmpx_write_entry: invalid type field"); | |
1208 | return 0; | |
1209 | } | |
564dd50a | 1210 | } |
1d7b9b20 | 1211 | |
5abcdf8e | 1212 | /* Please see the notes above wtmp_islogin() for information about the |
1213 | next two functions */ | |
1214 | ||
1215 | /* Return true if this wtmpx entry indicates a login */ | |
1216 | static int | |
1217 | wtmpx_islogin(struct logininfo *li, struct utmpx *utx) | |
1218 | { | |
dc2a6d09 | 1219 | if ( strncmp(li->username, utx->ut_name, |
1220 | MIN_SIZEOF(li->username, utx->ut_name)) == 0 ) { | |
a05a70ab | 1221 | # ifdef HAVE_TYPE_IN_UTMPX |
5abcdf8e | 1222 | if (utx->ut_type == USER_PROCESS) |
1223 | return 1; | |
a05a70ab | 1224 | # else |
5abcdf8e | 1225 | return 1; |
a05a70ab | 1226 | # endif |
5abcdf8e | 1227 | } |
1228 | return 0; | |
1229 | } | |
1230 | ||
1d7b9b20 | 1231 | |
1232 | int | |
564dd50a | 1233 | wtmpx_get_entry(struct logininfo *li) |
1234 | { | |
1d7b9b20 | 1235 | struct stat st; |
1236 | struct utmpx utx; | |
5abcdf8e | 1237 | int fd, found=0; |
1238 | ||
1239 | /* Clear the time entries */ | |
1240 | li->tv_sec = li->tv_usec = 0; | |
1d7b9b20 | 1241 | |
1242 | if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) { | |
1243 | log("wtmpx_get_entry: problem opening %s: %s", | |
1244 | WTMPX_FILE, strerror(errno)); | |
1245 | return 0; | |
1246 | } | |
2b87da3b | 1247 | if (fstat(fd, &st) != 0) { |
1d7b9b20 | 1248 | log("wtmpx_get_entry: couldn't stat %s: %s", |
1249 | WTMP_FILE, strerror(errno)); | |
1250 | close(fd); | |
1251 | return 0; | |
1252 | } | |
2b87da3b | 1253 | |
5abcdf8e | 1254 | /* Seek to the start of the last struct utmpx */ |
d9d47a26 | 1255 | if (lseek(fd, -(off_t)sizeof(struct utmpx), SEEK_END) == -1 ) { |
5abcdf8e | 1256 | /* probably a newly rotated wtmpx file */ |
1257 | close(fd); | |
1258 | return 0; | |
1259 | } | |
1d7b9b20 | 1260 | |
5abcdf8e | 1261 | while (!found) { |
9f32ceb4 | 1262 | if (atomicio(read, fd, &utx, sizeof(utx)) != sizeof(utx)) { |
1d7b9b20 | 1263 | log("wtmpx_get_entry: read of %s failed: %s", |
1264 | WTMPX_FILE, strerror(errno)); | |
1265 | close (fd); | |
1266 | return 0; | |
1267 | } | |
1d7b9b20 | 1268 | /* Logouts are recorded as a blank username on a particular line. |
1269 | * So, we just need to find the username in struct utmpx */ | |
5abcdf8e | 1270 | if ( wtmpx_islogin(li, &utx) ) { |
a05a70ab | 1271 | # ifdef HAVE_TV_IN_UTMPX |
1d7b9b20 | 1272 | li->tv_sec = utx.ut_tv.tv_sec; |
a05a70ab | 1273 | # else |
1d7b9b20 | 1274 | # ifdef HAVE_TIME_IN_UTMPX |
1275 | li->tv_sec = utx.ut_time; | |
1276 | # endif | |
a05a70ab | 1277 | # endif |
a4d05724 | 1278 | line_fullname(li->line, utx.ut_line, sizeof(li->line)); |
a05a70ab | 1279 | # ifdef HAVE_HOST_IN_UTMPX |
5abcdf8e | 1280 | strlcpy(li->hostname, utx.ut_host, |
1281 | MIN_SIZEOF(li->hostname, utx.ut_host)); | |
a05a70ab | 1282 | # endif |
5abcdf8e | 1283 | continue; |
1d7b9b20 | 1284 | } |
d9d47a26 | 1285 | if (lseek(fd, -(off_t)(2 * sizeof(struct utmpx)), SEEK_CUR) == -1) { |
1d7b9b20 | 1286 | close (fd); |
1287 | return 0; | |
1288 | } | |
5abcdf8e | 1289 | } |
1290 | ||
1291 | close(fd); | |
1d7b9b20 | 1292 | return 1; |
564dd50a | 1293 | } |
f988dce5 | 1294 | #endif /* USE_WTMPX */ |
1d7b9b20 | 1295 | |
1d7b9b20 | 1296 | /** |
564dd50a | 1297 | ** Low-level libutil login() functions |
1d7b9b20 | 1298 | **/ |
1299 | ||
1300 | #ifdef USE_LOGIN | |
1d7b9b20 | 1301 | static int |
564dd50a | 1302 | syslogin_perform_login(struct logininfo *li) |
1303 | { | |
1d7b9b20 | 1304 | struct utmp *ut; |
1305 | ||
dbaa2e87 | 1306 | if (! (ut = (struct utmp *)malloc(sizeof(*ut)))) { |
1d7b9b20 | 1307 | log("syslogin_perform_login: couldn't malloc()"); |
1308 | return 0; | |
1309 | } | |
1310 | construct_utmp(li, ut); | |
1311 | login(ut); | |
1312 | ||
1313 | return 1; | |
564dd50a | 1314 | } |
1d7b9b20 | 1315 | |
564dd50a | 1316 | static int |
1317 | syslogin_perform_logout(struct logininfo *li) | |
1318 | { | |
a05a70ab | 1319 | # ifdef HAVE_LOGOUT |
1d7b9b20 | 1320 | char line[8]; |
2b87da3b | 1321 | |
1d7b9b20 | 1322 | (void)line_stripname(line, li->line, sizeof(line)); |
1323 | ||
1324 | if (!logout(line)) { | |
1325 | log("syslogin_perform_logout: logout() returned an error"); | |
a05a70ab | 1326 | # ifdef HAVE_LOGWTMP |
1d7b9b20 | 1327 | } else { |
1328 | logwtmp(line, "", ""); | |
a05a70ab | 1329 | # endif |
5637650d | 1330 | } |
5abcdf8e | 1331 | /* FIXME: (ATL - if the need arises) What to do if we have |
1332 | * login, but no logout? what if logout but no logwtmp? All | |
1333 | * routines are in libutil so they should all be there, | |
1334 | * but... */ | |
a05a70ab | 1335 | # endif |
1d7b9b20 | 1336 | return 1; |
564dd50a | 1337 | } |
1d7b9b20 | 1338 | |
1d7b9b20 | 1339 | int |
564dd50a | 1340 | syslogin_write_entry(struct logininfo *li) |
1341 | { | |
1d7b9b20 | 1342 | switch (li->type) { |
1343 | case LTYPE_LOGIN: | |
1344 | return syslogin_perform_login(li); | |
1345 | case LTYPE_LOGOUT: | |
1346 | return syslogin_perform_logout(li); | |
1347 | default: | |
1348 | log("syslogin_write_entry: Invalid type field"); | |
1349 | return 0; | |
1350 | } | |
564dd50a | 1351 | } |
f988dce5 | 1352 | #endif /* USE_LOGIN */ |
1d7b9b20 | 1353 | |
1354 | /* end of file log-syslogin.c */ | |
1355 | ||
1d7b9b20 | 1356 | /** |
564dd50a | 1357 | ** Low-level lastlog functions |
1d7b9b20 | 1358 | **/ |
1359 | ||
1360 | #ifdef USE_LASTLOG | |
a05a70ab | 1361 | #define LL_FILE 1 |
1362 | #define LL_DIR 2 | |
1363 | #define LL_OTHER 3 | |
1d7b9b20 | 1364 | |
1d7b9b20 | 1365 | static void |
564dd50a | 1366 | lastlog_construct(struct logininfo *li, struct lastlog *last) |
1367 | { | |
1d7b9b20 | 1368 | /* clear the structure */ |
dbaa2e87 | 1369 | memset(last, '\0', sizeof(*last)); |
2b87da3b | 1370 | |
a05a70ab | 1371 | (void)line_stripname(last->ll_line, li->line, sizeof(last->ll_line)); |
5abcdf8e | 1372 | strlcpy(last->ll_host, li->hostname, |
1373 | MIN_SIZEOF(last->ll_host, li->hostname)); | |
1d7b9b20 | 1374 | last->ll_time = li->tv_sec; |
564dd50a | 1375 | } |
1d7b9b20 | 1376 | |
1d7b9b20 | 1377 | static int |
564dd50a | 1378 | lastlog_filetype(char *filename) |
1379 | { | |
1d7b9b20 | 1380 | struct stat st; |
1381 | ||
a05a70ab | 1382 | if (stat(LASTLOG_FILE, &st) != 0) { |
2b87da3b | 1383 | log("lastlog_perform_login: Couldn't stat %s: %s", LASTLOG_FILE, |
a05a70ab | 1384 | strerror(errno)); |
1d7b9b20 | 1385 | return 0; |
1386 | } | |
1d7b9b20 | 1387 | if (S_ISDIR(st.st_mode)) |
1388 | return LL_DIR; | |
1389 | else if (S_ISREG(st.st_mode)) | |
1390 | return LL_FILE; | |
1391 | else | |
1392 | return LL_OTHER; | |
564dd50a | 1393 | } |
1d7b9b20 | 1394 | |
1395 | ||
1396 | /* open the file (using filemode) and seek to the login entry */ | |
1397 | static int | |
564dd50a | 1398 | lastlog_openseek(struct logininfo *li, int *fd, int filemode) |
1399 | { | |
1d7b9b20 | 1400 | off_t offset; |
1401 | int type; | |
1402 | char lastlog_file[1024]; | |
1403 | ||
1404 | type = lastlog_filetype(LASTLOG_FILE); | |
1405 | switch (type) { | |
d8caae24 | 1406 | case LL_FILE: |
1407 | strlcpy(lastlog_file, LASTLOG_FILE, sizeof(lastlog_file)); | |
1408 | break; | |
1409 | case LL_DIR: | |
1410 | snprintf(lastlog_file, sizeof(lastlog_file), "%s/%s", | |
1411 | LASTLOG_FILE, li->username); | |
1412 | break; | |
1413 | default: | |
1414 | log("lastlog_openseek: %.100s is not a file or directory!", | |
1415 | LASTLOG_FILE); | |
1416 | return 0; | |
a05a70ab | 1417 | } |
1d7b9b20 | 1418 | |
1419 | *fd = open(lastlog_file, filemode); | |
1420 | if ( *fd < 0) { | |
9f32ceb4 | 1421 | debug("lastlog_openseek: Couldn't open %s: %s", |
1d7b9b20 | 1422 | lastlog_file, strerror(errno)); |
1423 | return 0; | |
1424 | } | |
2b87da3b | 1425 | |
d93a7e5a | 1426 | if (type == LL_FILE) { |
1427 | /* find this uid's offset in the lastlog file */ | |
d9d47a26 | 1428 | offset = (off_t) ((long)li->uid * sizeof(struct lastlog)); |
1d7b9b20 | 1429 | |
d93a7e5a | 1430 | if ( lseek(*fd, offset, SEEK_SET) != offset ) { |
1431 | log("lastlog_openseek: %s->lseek(): %s", | |
2b87da3b | 1432 | lastlog_file, strerror(errno)); |
d93a7e5a | 1433 | return 0; |
1434 | } | |
1d7b9b20 | 1435 | } |
2b87da3b | 1436 | |
1d7b9b20 | 1437 | return 1; |
564dd50a | 1438 | } |
1d7b9b20 | 1439 | |
1440 | static int | |
564dd50a | 1441 | lastlog_perform_login(struct logininfo *li) |
1442 | { | |
1d7b9b20 | 1443 | struct lastlog last; |
1444 | int fd; | |
1445 | ||
1446 | /* create our struct lastlog */ | |
1447 | lastlog_construct(li, &last); | |
1448 | ||
1a022229 | 1449 | if (!lastlog_openseek(li, &fd, O_RDWR|O_CREAT)) |
1450 | return(0); | |
2b87da3b | 1451 | |
1d7b9b20 | 1452 | /* write the entry */ |
1a022229 | 1453 | if (atomicio(write, fd, &last, sizeof(last)) != sizeof(last)) { |
1454 | close(fd); | |
1455 | log("lastlog_write_filemode: Error writing to %s: %s", | |
1456 | LASTLOG_FILE, strerror(errno)); | |
1d7b9b20 | 1457 | return 0; |
a05a70ab | 1458 | } |
1a022229 | 1459 | |
1460 | close(fd); | |
1461 | return 1; | |
564dd50a | 1462 | } |
1d7b9b20 | 1463 | |
1d7b9b20 | 1464 | int |
564dd50a | 1465 | lastlog_write_entry(struct logininfo *li) |
1466 | { | |
1d7b9b20 | 1467 | switch(li->type) { |
1468 | case LTYPE_LOGIN: | |
1469 | return lastlog_perform_login(li); | |
1470 | default: | |
1471 | log("lastlog_write_entry: Invalid type field"); | |
1472 | return 0; | |
1473 | } | |
564dd50a | 1474 | } |
1d7b9b20 | 1475 | |
1d7b9b20 | 1476 | static void |
564dd50a | 1477 | lastlog_populate_entry(struct logininfo *li, struct lastlog *last) |
1478 | { | |
1d7b9b20 | 1479 | line_fullname(li->line, last->ll_line, sizeof(li->line)); |
2b87da3b | 1480 | strlcpy(li->hostname, last->ll_host, |
5abcdf8e | 1481 | MIN_SIZEOF(li->hostname, last->ll_host)); |
1d7b9b20 | 1482 | li->tv_sec = last->ll_time; |
564dd50a | 1483 | } |
1d7b9b20 | 1484 | |
1d7b9b20 | 1485 | int |
564dd50a | 1486 | lastlog_get_entry(struct logininfo *li) |
1487 | { | |
1d7b9b20 | 1488 | struct lastlog last; |
1489 | int fd; | |
1490 | ||
ce49121d | 1491 | if (!lastlog_openseek(li, &fd, O_RDONLY)) |
1492 | return 0; | |
1493 | ||
1494 | if (atomicio(read, fd, &last, sizeof(last)) != sizeof(last)) { | |
1495 | close(fd); | |
1496 | log("lastlog_get_entry: Error reading from %s: %s", | |
1497 | LASTLOG_FILE, strerror(errno)); | |
2b87da3b | 1498 | return 0; |
a05a70ab | 1499 | } |
ce49121d | 1500 | |
1501 | close(fd); | |
1502 | ||
1503 | lastlog_populate_entry(li, &last); | |
1504 | ||
1505 | return 1; | |
564dd50a | 1506 | } |
f988dce5 | 1507 | #endif /* USE_LASTLOG */ |