diff options
author | andre <andre> | 2000-06-03 14:57:40 +0000 |
---|---|---|
committer | andre <andre> | 2000-06-03 14:57:40 +0000 |
commit | 2ff7b5d02817eb74a3ac2bf02eadef127b09d77c (patch) | |
tree | 13273092785271978f00ba33f3b14519d5ca1409 /loginrec.c | |
parent | e340f73b53aa3451f88fd9d41b652b659b0398f8 (diff) |
Added new login recording code
Added test program for login code (make logintest)
Diffstat (limited to 'loginrec.c')
-rw-r--r-- | loginrec.c | 1385 |
1 files changed, 1385 insertions, 0 deletions
diff --git a/loginrec.c b/loginrec.c new file mode 100644 index 000000000..c35328cb6 --- /dev/null +++ b/loginrec.c | |||
@@ -0,0 +1,1385 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2000 Andre Lucas. All rights reserved. | ||
3 | * | ||
4 | * Redistribution and use in source and binary forms, with or without | ||
5 | * modification, are permitted provided that the following conditions | ||
6 | * are met: | ||
7 | * 1. Redistributions of source code must retain the above copyright | ||
8 | * notice, this list of conditions and the following disclaimer. | ||
9 | * 2. Redistributions in binary form must reproduce the above copyright | ||
10 | * notice, this list of conditions and the following disclaimer in the | ||
11 | * documentation and/or other materials provided with the distribution. | ||
12 | * 3. All advertising materials mentioning features or use of this software | ||
13 | * must display the following acknowledgement: | ||
14 | * This product includes software developed by Markus Friedl. | ||
15 | * 4. The name of the author may not be used to endorse or promote products | ||
16 | * derived from this software without specific prior written permission. | ||
17 | * | ||
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | ||
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | ||
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | ||
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
28 | */ | ||
29 | |||
30 | /** | ||
31 | ** loginrec.c: platform-independent login recording and lastlog retrieval | ||
32 | **/ | ||
33 | |||
34 | /** | ||
35 | ** TODO: | ||
36 | ** sockaddr_* stuff isn't finished | ||
37 | ** | ||
38 | ** Platform status: | ||
39 | ** ---------------- | ||
40 | ** | ||
41 | ** Known good: | ||
42 | ** Linux (Redhat 6.2, need more variants) | ||
43 | ** HP-UX 10.20 (gcc only) | ||
44 | ** | ||
45 | ** Testing required: Please send reports! | ||
46 | ** Solaris | ||
47 | ** IRIX | ||
48 | ** NetBSD | ||
49 | ** HP-UX 11 | ||
50 | ** | ||
51 | ** Platforms with known problems: | ||
52 | ** AIX (need to port AIX stuff from old login code | ||
53 | ** NeXT | ||
54 | ** | ||
55 | **/ | ||
56 | |||
57 | #include "includes.h" | ||
58 | |||
59 | #include <sys/types.h> | ||
60 | #include <sys/stat.h> | ||
61 | #include <netinet/in.h> | ||
62 | #include <unistd.h> | ||
63 | #include <fcntl.h> | ||
64 | #include <stdlib.h> | ||
65 | #include <string.h> | ||
66 | #include <stdio.h> | ||
67 | #include <errno.h> | ||
68 | #ifdef HAVE_PWD_H | ||
69 | # include <pwd.h> | ||
70 | #endif | ||
71 | #ifdef HAVE_SYS_TIME_H | ||
72 | # include <sys/time.h> | ||
73 | #else | ||
74 | # include <time.h> | ||
75 | #endif | ||
76 | |||
77 | #include "ssh.h" | ||
78 | #include "xmalloc.h" | ||
79 | #include "loginrec.h" | ||
80 | |||
81 | RCSID("$Id: loginrec.c,v 1.1 2000/06/03 14:57:40 andre Exp $"); | ||
82 | |||
83 | |||
84 | /** | ||
85 | ** prototypes for helper functions in this file | ||
86 | **/ | ||
87 | |||
88 | #if HAVE_UTMP_H | ||
89 | # include <utmp.h> | ||
90 | void set_utmp_time(struct logininfo *li, struct utmp *ut); | ||
91 | void construct_utmp(struct logininfo *li, struct utmp *ut); | ||
92 | #endif | ||
93 | |||
94 | #ifdef HAVE_UTMPX_H | ||
95 | # include <utmpx.h> | ||
96 | void set_utmpx_time(struct logininfo *li, struct utmpx *ut); | ||
97 | void construct_utmpx(struct logininfo *li, struct utmpx *ut); | ||
98 | #endif | ||
99 | |||
100 | int utmp_write_entry(struct logininfo *li); | ||
101 | int utmpx_write_entry(struct logininfo *li); | ||
102 | int wtmp_write_entry(struct logininfo *li); | ||
103 | int wtmpx_write_entry(struct logininfo *li); | ||
104 | int lastlog_write_entry(struct logininfo *li); | ||
105 | int syslogin_write_entry(struct logininfo *li); | ||
106 | |||
107 | int getlast_entry(struct logininfo *li); | ||
108 | int lastlog_get_entry(struct logininfo *li); | ||
109 | int wtmp_get_entry(struct logininfo *li); | ||
110 | int wtmpx_get_entry(struct logininfo *li); | ||
111 | |||
112 | |||
113 | /** | ||
114 | ** platform-independent login functions | ||
115 | **/ | ||
116 | |||
117 | /* login_alloc_entry() - allocate and initialise a logininfo */ | ||
118 | struct logininfo *login_alloc_entry(int pid, const char *username, | ||
119 | const char *hostname, | ||
120 | const char *line) { | ||
121 | struct logininfo *newli; | ||
122 | |||
123 | newli = (struct logininfo *) xmalloc (sizeof(struct logininfo)); | ||
124 | |||
125 | if (login_init_entry(newli, pid, username, hostname, line)) | ||
126 | return newli; | ||
127 | else | ||
128 | return 0; /* fail */ | ||
129 | } /* login_alloc_entry() */ | ||
130 | |||
131 | |||
132 | /* login_free_entry() - free struct memory (duh) */ | ||
133 | void login_free_entry(struct logininfo *li) { | ||
134 | if (li && (li->line[0] != '\0')) | ||
135 | free ((void *)li); | ||
136 | else | ||
137 | log("login_free_entry: attempt to free invalid entry (warning)"); | ||
138 | } /* login_free_entry() */ | ||
139 | |||
140 | /* login_init_entry() - initialise a struct logininfo */ | ||
141 | int login_init_entry(struct logininfo *li, | ||
142 | int pid, const char *username, | ||
143 | const char *hostname, const char *line) { | ||
144 | |||
145 | /* zero the structure */ | ||
146 | memset(li, 0, sizeof(struct logininfo)); | ||
147 | |||
148 | /* progname should be set outside this call */ | ||
149 | /* type stays null by default */ | ||
150 | login_set_pid(li, pid); | ||
151 | /* set the line information */ | ||
152 | login_set_line(li, line); | ||
153 | login_set_username(li, username); | ||
154 | login_set_hostname(li, hostname); | ||
155 | /* exit status and termination stay null by default */ | ||
156 | login_set_current_time(li); | ||
157 | /* sockaddr_* stuff must be set separately (for now) */ | ||
158 | return 1; | ||
159 | } /* login_init_entry() */ | ||
160 | |||
161 | |||
162 | void | ||
163 | login_set_progname(struct logininfo *li, const char *progname) { | ||
164 | memset(li->progname, '\0', sizeof(li->progname)); | ||
165 | if (progname) | ||
166 | strlcpy(li->progname, progname, sizeof(li->progname)); | ||
167 | else | ||
168 | li->progname[0] = '\0'; /* set to null */ | ||
169 | } | ||
170 | |||
171 | void | ||
172 | login_set_type(struct logininfo *li, int type) { | ||
173 | li->type = type; | ||
174 | } | ||
175 | |||
176 | void | ||
177 | login_set_pid(struct logininfo *li, int pid) { | ||
178 | if (!pid) | ||
179 | li->pid = (int)getpid(); | ||
180 | else | ||
181 | li->pid = pid; | ||
182 | } | ||
183 | |||
184 | void | ||
185 | login_set_uid(struct logininfo *li, int uid) { | ||
186 | struct passwd *pw; | ||
187 | |||
188 | li->uid = uid; | ||
189 | /* now update the username */ | ||
190 | pw = getpwuid(uid); | ||
191 | strlcpy(li->username, pw->pw_name, sizeof(li->username)); | ||
192 | } | ||
193 | |||
194 | void | ||
195 | login_set_line(struct logininfo *li, const char *line) { | ||
196 | if (line) { | ||
197 | /* canonical form is the full name, i.e. including '/dev' */ | ||
198 | line_fullname(li->line, line, sizeof(li->line)); | ||
199 | } else | ||
200 | li->line[0] = '\0'; | ||
201 | } | ||
202 | |||
203 | void | ||
204 | login_set_username(struct logininfo *li, const char *username) { | ||
205 | struct passwd *pw; | ||
206 | |||
207 | if (!username) { | ||
208 | li->username[0] = '\0'; | ||
209 | li->uid = -1; /* hmm... */ | ||
210 | } else { | ||
211 | strlcpy(li->username, username, sizeof(li->username)); | ||
212 | /* now update the uid */ | ||
213 | pw = getpwnam(username); | ||
214 | li->uid = pw->pw_uid; | ||
215 | } | ||
216 | } | ||
217 | |||
218 | |||
219 | void | ||
220 | login_set_hostname(struct logininfo *li, const char *hostname) { | ||
221 | if (hostname) { /* can be null */ | ||
222 | strlcpy(li->hostname, hostname, sizeof(li->hostname)); | ||
223 | } | ||
224 | } | ||
225 | |||
226 | |||
227 | void | ||
228 | login_set_exitstatus(struct logininfo *li, | ||
229 | int exit, int termination) { | ||
230 | /* FIXME: (ATL) And? */ | ||
231 | } | ||
232 | |||
233 | |||
234 | /* tv_usec should be null on systems without struct timeval */ | ||
235 | void | ||
236 | login_set_time(struct logininfo *li, | ||
237 | unsigned int tv_sec, unsigned int tv_usec) { | ||
238 | li->tv_sec = tv_sec; | ||
239 | li->tv_usec = tv_usec; | ||
240 | } | ||
241 | |||
242 | |||
243 | void | ||
244 | login_set_current_time(struct logininfo *li) { | ||
245 | #ifdef HAVE_SYS_TIME_H | ||
246 | struct timeval tv; | ||
247 | |||
248 | gettimeofday(&tv, NULL); | ||
249 | li->tv_sec = tv.tv_sec ; li->tv_usec = tv.tv_usec; | ||
250 | #else | ||
251 | time_t t = time(0); | ||
252 | |||
253 | li->tv_sec = t; li->tv_usec = 0; | ||
254 | #endif | ||
255 | } | ||
256 | |||
257 | void | ||
258 | login_set_ip4(struct logininfo *li, | ||
259 | const struct sockaddr_in *sa_in4) { | ||
260 | memcpy((void *)&(li->hostaddr.sa_in4), (const void *)sa_in4, | ||
261 | sizeof(struct sockaddr_in)); | ||
262 | } | ||
263 | |||
264 | #ifdef HAVE_IP6 | ||
265 | void | ||
266 | login_set_ip6(struct logininfo *li, | ||
267 | const struct sockaddr_in6 *sa_in6) { | ||
268 | memcpy((void *)&(li->hostaddr.sa_in4), (const void *)sa_in6, | ||
269 | sizeof(struct sockaddr_in6)); | ||
270 | } | ||
271 | #endif | ||
272 | |||
273 | /* | ||
274 | * record the entry | ||
275 | */ | ||
276 | |||
277 | int | ||
278 | login_write (struct logininfo *li) { | ||
279 | |||
280 | if ((int)geteuid() != 0) { | ||
281 | log("Attempt to write login records by non-root user (aborting)"); | ||
282 | return 1; | ||
283 | } | ||
284 | /* set the timestamp */ | ||
285 | login_set_current_time(li); | ||
286 | #ifdef USE_LOGIN | ||
287 | syslogin_write_entry(li); | ||
288 | #endif | ||
289 | #ifdef USE_LASTLOG | ||
290 | if (li->type == LTYPE_LOGIN) { | ||
291 | lastlog_write_entry(li); | ||
292 | } | ||
293 | #endif | ||
294 | #ifdef USE_UTMP | ||
295 | utmp_write_entry(li); | ||
296 | #endif | ||
297 | #ifdef USE_WTMP | ||
298 | wtmp_write_entry(li); | ||
299 | #endif | ||
300 | #ifdef USE_UTMPX | ||
301 | utmpx_write_entry(li); | ||
302 | #endif | ||
303 | #ifdef USE_WTMPX | ||
304 | wtmpx_write_entry(li); | ||
305 | #endif | ||
306 | return 0; | ||
307 | } | ||
308 | |||
309 | int | ||
310 | login_login (struct logininfo *li) { | ||
311 | li->type = LTYPE_LOGIN; | ||
312 | return login_write(li); | ||
313 | } | ||
314 | |||
315 | int | ||
316 | login_logout(struct logininfo *li) { | ||
317 | li->type = LTYPE_LOGOUT; | ||
318 | return login_write(li); | ||
319 | } | ||
320 | |||
321 | int | ||
322 | login_log_entry(struct logininfo *li) { | ||
323 | return login_write(li); | ||
324 | } | ||
325 | |||
326 | |||
327 | unsigned int | ||
328 | login_getlasttime_name(const char *username) { | ||
329 | struct logininfo li; | ||
330 | |||
331 | memset(&li, '\0', sizeof(li)); | ||
332 | login_set_username(&li, username); | ||
333 | if (getlast_entry(&li)) | ||
334 | return li.tv_sec; | ||
335 | else | ||
336 | return 0; | ||
337 | } /* login_getlasttime_name() */ | ||
338 | |||
339 | |||
340 | unsigned int | ||
341 | login_getlasttime_uid(const int uid) { | ||
342 | struct logininfo li; | ||
343 | |||
344 | memset(&li, '\0', sizeof(li)); | ||
345 | login_set_uid(&li, uid); | ||
346 | if (getlast_entry(&li)) | ||
347 | return li.tv_sec; | ||
348 | else | ||
349 | return 0; | ||
350 | } /* login_getlasttime_uid() */ | ||
351 | |||
352 | |||
353 | struct logininfo * | ||
354 | login_getlastentry_name(struct logininfo *li, | ||
355 | const char *username) { | ||
356 | login_set_username(li, username); | ||
357 | if (getlast_entry(li)) | ||
358 | return li; | ||
359 | else | ||
360 | return 0; | ||
361 | } /* login_getlastentry_name() */ | ||
362 | |||
363 | struct logininfo * | ||
364 | login_getlastentry_uid(struct logininfo *li, | ||
365 | const int uid) { | ||
366 | login_set_uid(li, uid); | ||
367 | if (getlast_entry(li)) | ||
368 | return li; | ||
369 | else | ||
370 | return 0; | ||
371 | } /* login_getlastentry_uid() */ | ||
372 | |||
373 | |||
374 | /** | ||
375 | ** 'line' string utility functions | ||
376 | **/ | ||
377 | |||
378 | /* | ||
379 | * process the 'line' string into three forms: | ||
380 | * 1. The full filename (including '/dev') | ||
381 | * 2. The stripped name (excluding '/dev') | ||
382 | * 3. The abbreviated name (e.g. /dev/ttyp00 | ||
383 | * | ||
384 | * Form 3 is used on some systems to identify a .tmp.? entry when | ||
385 | * attempting to remove it. Typically both addition and removal is | ||
386 | * performed by one application - say, sshd - so as long as the | ||
387 | * choice uniquely identifies a terminal and is the same at login and | ||
388 | * logout time, we're in good shape. | ||
389 | * | ||
390 | * NOTE: None of these calls actually allocate any memory - | ||
391 | * since their target is probably a structure, they don't | ||
392 | * need to. | ||
393 | */ | ||
394 | |||
395 | |||
396 | /* add the leading '/dev/' if it doesn't exist | ||
397 | * make sure dst has enough space, if not just copy src (ugh) */ | ||
398 | char * | ||
399 | line_fullname(char *dst, const char *src, int dstsize) { | ||
400 | memset(dst, '\0', dstsize); | ||
401 | if ((strncmp(src, "/dev/", 5) == 0) || (dstsize < (strlen(src) + 5))) | ||
402 | strlcpy(dst, src, dstsize); | ||
403 | else { | ||
404 | strlcpy(dst, "/dev/", 5); | ||
405 | strlcat(dst, src, dstsize); | ||
406 | } | ||
407 | return dst; | ||
408 | } | ||
409 | |||
410 | /* strip the leading '/dev' if it exists, return dst */ | ||
411 | char * | ||
412 | line_stripname(char *dst, const char *src, int dstsize) { | ||
413 | memset(dst, '\0', dstsize); | ||
414 | if (strncmp(src, "/dev/", 5) == 0) | ||
415 | strlcpy(dst, &src[5], dstsize); | ||
416 | else | ||
417 | strlcpy(dst, src, dstsize); | ||
418 | return dst; | ||
419 | } /* stripdev() */ | ||
420 | |||
421 | /* return the abbreviated (usually four-character) form * | ||
422 | * simple algorithm for making name: | ||
423 | * - first character is 'L' (arbitrary - 'lib(L)ogin' :-) ) | ||
424 | * - remaining n characters are last n characters of line | ||
425 | * This is good for up to 999 ptys, I hope that's enough... | ||
426 | */ | ||
427 | char * | ||
428 | line_abbrevname(char *dst, const char *src, int dstsize) { | ||
429 | memset(dst, '\0', dstsize); | ||
430 | dst[0]='L'; | ||
431 | strlcpy(dst+1, &src[strlen(src)-(dstsize)], dstsize); | ||
432 | return dst; | ||
433 | } | ||
434 | |||
435 | |||
436 | /** | ||
437 | ** utmp utility functions | ||
438 | **/ | ||
439 | |||
440 | #if defined(USE_UTMP) || defined (USE_WTMP) || defined (USE_LOGIN) | ||
441 | |||
442 | #ifdef HAVE_UTMP_H | ||
443 | # include <utmp.h> | ||
444 | #endif | ||
445 | #ifdef USE_TIMEVAL | ||
446 | # include <sys/time.h> | ||
447 | #else | ||
448 | # include <time.h> | ||
449 | #endif | ||
450 | |||
451 | /* build the utmp structure */ | ||
452 | void | ||
453 | set_utmp_time(struct logininfo *li, struct utmp *ut) { | ||
454 | #ifdef HAVE_TV_IN_UTMP | ||
455 | ut->ut_tv.tv_sec = li->tv_sec; | ||
456 | ut->ut_tv.tv_usec = li->tv_usec; | ||
457 | #else | ||
458 | # ifdef HAVE_TIME_IN_UTMP | ||
459 | ut->ut_time = li->tv_sec; | ||
460 | # endif | ||
461 | #endif | ||
462 | } | ||
463 | |||
464 | void | ||
465 | construct_utmp(struct logininfo *li, | ||
466 | struct utmp *ut) { | ||
467 | memset(ut, '\0', sizeof(struct utmp)); | ||
468 | |||
469 | #ifdef HAVE_ID_IN_UTMP | ||
470 | line_abbrevname(ut->ut_id, li->line, sizeof(ut->ut_id)); | ||
471 | #endif | ||
472 | |||
473 | #ifdef HAVE_TYPE_IN_UTMP | ||
474 | /* this is done here to keep utmp constants out of login.h */ | ||
475 | switch (li->type) { | ||
476 | case LTYPE_LOGIN: | ||
477 | ut->ut_type = USER_PROCESS; | ||
478 | break; | ||
479 | case LTYPE_LOGOUT: | ||
480 | ut->ut_type = DEAD_PROCESS; | ||
481 | break; | ||
482 | } | ||
483 | #endif | ||
484 | |||
485 | #ifdef HAVE_PID_IN_UTMP | ||
486 | ut->ut_pid = li->pid; | ||
487 | #endif | ||
488 | line_stripname(ut->ut_line, li->line, sizeof(ut->ut_line)); | ||
489 | strlcpy(ut->ut_name, li->username, sizeof(ut->ut_name)); | ||
490 | set_utmp_time(li, ut); | ||
491 | #ifdef HAVE_HOST_IN_UTMP | ||
492 | strlcpy(ut->ut_host, li->hostname, sizeof(ut->ut_host)); | ||
493 | #endif | ||
494 | #ifdef HAVE_ADDR_IN_UTMP | ||
495 | /* !!! not supported yet (can't see its big use either) */ | ||
496 | #endif | ||
497 | |||
498 | } /* construct_utmp() */ | ||
499 | |||
500 | #endif | ||
501 | /* USE_UTMP || USE_WTMP || USE_LOGIN */ | ||
502 | |||
503 | /** | ||
504 | ** utmpx utility functions | ||
505 | **/ | ||
506 | |||
507 | #if defined(USE_UTMPX) || defined (USE_WTMPX) | ||
508 | |||
509 | #ifdef HAVE_UTMPX_H | ||
510 | # include <utmpx.h> | ||
511 | #endif | ||
512 | #ifdef USE_TIMEVAL | ||
513 | # include <sys/time.h> | ||
514 | #else | ||
515 | # include <time.h> | ||
516 | #endif | ||
517 | |||
518 | /* build the utmpx structure */ | ||
519 | void | ||
520 | set_utmpx_time(struct logininfo *li, struct utmpx *utx) { | ||
521 | #ifdef HAVE_TV_IN_UTMPX | ||
522 | utx->ut_tv.tv_sec = li->tv_sec; | ||
523 | utx->ut_tv.tv_usec = li->tv_usec; | ||
524 | #else | ||
525 | # ifdef HAVE_TIME_IN_UTMPX | ||
526 | utx->ut_time = li->tv_sec; | ||
527 | # endif | ||
528 | #endif | ||
529 | } | ||
530 | |||
531 | void | ||
532 | construct_utmpx(struct logininfo *li, | ||
533 | struct utmpx *utx) { | ||
534 | memset(utx, '\0', sizeof(struct utmpx)); | ||
535 | |||
536 | line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id)); | ||
537 | |||
538 | /* this is done here to keep utmp constants out of loginrec.h */ | ||
539 | switch (li->type) { | ||
540 | case LTYPE_LOGIN: | ||
541 | utx->ut_type = USER_PROCESS; | ||
542 | break; | ||
543 | case LTYPE_LOGOUT: | ||
544 | utx->ut_type = DEAD_PROCESS; | ||
545 | break; | ||
546 | } | ||
547 | |||
548 | utx->ut_pid = li->pid; | ||
549 | line_stripname(utx->ut_line, li->line, sizeof(utx->ut_line)); | ||
550 | strlcpy(utx->ut_name, li->username, sizeof(utx->ut_name)); | ||
551 | set_utmpx_time(li, utx); | ||
552 | #ifdef HAVE_HOST_IN_UTMPX | ||
553 | strlcpy(utx->ut_host, li->hostname, sizeof(utx->ut_host)); | ||
554 | #endif | ||
555 | #ifdef HAVE_ADDR_IN_UTMPX | ||
556 | /* !!! not supported yet (some issues with types of addresses) */ | ||
557 | #endif | ||
558 | #ifdef HAVE_SYSLEN_IN_UTMPX | ||
559 | /* this is safe because of the extra nulls in logininfo */ | ||
560 | utx->ut_syslen = strlen(li->hostname); | ||
561 | #endif | ||
562 | } /* construct_utmpx() */ | ||
563 | |||
564 | #endif | ||
565 | /* USE_UTMPX || USE_WTMPX */ | ||
566 | |||
567 | |||
568 | |||
569 | /** | ||
570 | ** utmp functions | ||
571 | **/ | ||
572 | |||
573 | /* FIXME: (ATL) utmp_write_direct needs testing */ | ||
574 | |||
575 | #ifdef USE_UTMP | ||
576 | |||
577 | #include <utmp.h> | ||
578 | |||
579 | /* if we can, use pututline() etc. */ | ||
580 | #if !defined(DISABLE_PUTUTLINE) && defined(HAVE_SETUTENT) && \ | ||
581 | defined(HAVE_PUTUTLINE) | ||
582 | # define UTMP_USE_LIBRARY | ||
583 | #endif | ||
584 | |||
585 | |||
586 | /* write a utmp entry with the system's help (pututline() and pals) */ | ||
587 | #ifdef UTMP_USE_LIBRARY | ||
588 | static int | ||
589 | utmp_write_library(struct logininfo *li, struct utmp *ut) { | ||
590 | |||
591 | setutent(); | ||
592 | pututline(ut); | ||
593 | |||
594 | #ifdef HAVE_ENDUTENT | ||
595 | endutent(); | ||
596 | #endif | ||
597 | return 1; | ||
598 | } /* utmp_write_library() */ | ||
599 | |||
600 | #else | ||
601 | |||
602 | /* write a utmp entry direct to the file */ | ||
603 | /* This code is a slightly modification of code in OpenBSD's login.c | ||
604 | * (in libutil) and so is subject to the OpenBSD Licensing terms. */ | ||
605 | static int | ||
606 | utmp_write_direct(struct logininfo *li, struct utmp *ut) { | ||
607 | struct utmp old_ut; | ||
608 | register int fd; | ||
609 | int tty; | ||
610 | |||
611 | tty = ttyslot(); /* seems only to work for /dev/ttyp? style names */ | ||
612 | |||
613 | if (tty > 0 && (fd = open(UTMP_FILE, O_RDWR|O_CREAT, 0644)) >= 0) { | ||
614 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); | ||
615 | /* | ||
616 | * Prevent luser from zero'ing out ut_host. | ||
617 | * If the new ut_line is empty but the old one is not | ||
618 | * and ut_line and ut_name match, preserve the old ut_line. | ||
619 | */ | ||
620 | if ( read(fd, &old_ut, sizeof(struct utmp)) == sizeof(struct utmp) | ||
621 | && ut->ut_host[0] == '\0' | ||
622 | && old_ut.ut_host[0] != '\0' | ||
623 | && strncmp(old_ut.ut_line, ut->ut_line, sizeof(ut->ut_line)) == 0 | ||
624 | && strncmp(old_ut.ut_name, ut->ut_name, sizeof(ut->ut_name)) == 0 ) | ||
625 | (void)memcpy(ut->ut_host, old_ut.ut_host, sizeof(ut->ut_host)); | ||
626 | |||
627 | (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); | ||
628 | if (write(fd, ut, sizeof(struct utmp))==-1) | ||
629 | log("utmp_write_direct: error writing %s: %s", | ||
630 | UTMP_FILE, strerror(errno)); | ||
631 | |||
632 | (void)close(fd); | ||
633 | return 1; | ||
634 | } else | ||
635 | return 0; | ||
636 | } /* utmp_write_direct() */ | ||
637 | |||
638 | #endif /* UTMP_USE_LIBRARY */ | ||
639 | |||
640 | |||
641 | static int | ||
642 | utmp_perform_login(struct logininfo *li) { | ||
643 | struct utmp ut; | ||
644 | |||
645 | construct_utmp(li, &ut); | ||
646 | |||
647 | #ifdef UTMP_USE_LIBRARY | ||
648 | if (!utmp_write_library(li, &ut)) { | ||
649 | log("utmp_perform_login: utmp_write_library() failed"); | ||
650 | return 0; | ||
651 | } | ||
652 | #else | ||
653 | if (!utmp_write_direct(li, &ut)) { | ||
654 | log("utmp_perform_login: utmp_write_direct() failed"); | ||
655 | return 0; | ||
656 | } | ||
657 | #endif | ||
658 | return 1; | ||
659 | } /* utmp_perform_login() */ | ||
660 | |||
661 | |||
662 | static int | ||
663 | utmp_perform_logout(struct logininfo *li) { | ||
664 | struct utmp ut; | ||
665 | |||
666 | memset(&ut, '\0', sizeof(ut)); | ||
667 | set_utmp_time(li, &ut); | ||
668 | line_stripname(ut.ut_line, li->line, sizeof(ut.ut_line)); | ||
669 | #ifdef HAVE_ID_IN_UTMP | ||
670 | line_abbrevname(ut.ut_id, li->line, sizeof(ut.ut_id)); | ||
671 | #endif | ||
672 | #ifdef HAVE_TYPE_IN_UTMP | ||
673 | ut.ut_type = DEAD_PROCESS; | ||
674 | #endif | ||
675 | |||
676 | #if !defined(DISABLE_PUTUTLINE) \ | ||
677 | && defined(HAVE_SETUTENT) && defined(HAVE_PUTUTLINE) | ||
678 | utmp_write_library(li, &ut); | ||
679 | #else | ||
680 | utmp_write_direct(li, &ut); | ||
681 | #endif | ||
682 | |||
683 | return 1; | ||
684 | } /* utmp_perform_logout() */ | ||
685 | |||
686 | |||
687 | int | ||
688 | utmp_write_entry(struct logininfo *li) { | ||
689 | |||
690 | switch(li->type) { | ||
691 | case LTYPE_LOGIN: | ||
692 | return utmp_perform_login(li); | ||
693 | |||
694 | case LTYPE_LOGOUT: | ||
695 | return utmp_perform_logout(li); | ||
696 | |||
697 | default: | ||
698 | log("utmp_write_entry: invalid type field"); | ||
699 | return 0; | ||
700 | } | ||
701 | } /* utmp_write_entry() */ | ||
702 | |||
703 | |||
704 | #endif | ||
705 | /* USE_UTMP */ | ||
706 | |||
707 | |||
708 | /** | ||
709 | ** utmpx functions | ||
710 | **/ | ||
711 | |||
712 | /* not much point if we don't want utmpx entries */ | ||
713 | #ifdef USE_UTMPX | ||
714 | |||
715 | #include <utmpx.h> | ||
716 | |||
717 | /* if we have the wherewithall, use pututxline etc. */ | ||
718 | #if !defined(DISABLE_PUTUTXLINE) && defined(HAVE_SETUTXENT) \ | ||
719 | && defined(HAVE_PUTUTXLINE) | ||
720 | # define UTMPX_USE_LIBRARY | ||
721 | #endif | ||
722 | |||
723 | |||
724 | /* write a utmpx entry with the system's help (pututxline() and pals) */ | ||
725 | #ifdef UTMPX_USE_LIBRARY | ||
726 | static int | ||
727 | utmpx_write_library(struct logininfo *li, struct utmpx *utx) { | ||
728 | |||
729 | setutxent(); | ||
730 | pututxline(utx); | ||
731 | |||
732 | #ifdef HAVE_ENDUTXENT | ||
733 | endutxent(); | ||
734 | #endif | ||
735 | return 1; | ||
736 | } /* utmpx_write_library() */ | ||
737 | |||
738 | #else | ||
739 | /* UTMPX_USE_LIBRARY */ | ||
740 | |||
741 | |||
742 | /* write a utmp entry direct to the file */ | ||
743 | static int | ||
744 | utmpx_write_direct(struct logininfo *li, struct utmpx *utx) { | ||
745 | |||
746 | log("utmpx_write_direct: not implemented!"); | ||
747 | return 0; | ||
748 | } /* utmpx_write_direct() */ | ||
749 | |||
750 | #endif | ||
751 | /* UTMPX_USE_LIBRARY */ | ||
752 | |||
753 | static int | ||
754 | utmpx_perform_login(struct logininfo *li) { | ||
755 | struct utmpx utx; | ||
756 | |||
757 | construct_utmpx(li, &utx); | ||
758 | |||
759 | #ifdef UTMPX_USE_LIBRARY | ||
760 | if (!utmpx_write_library(li, &utx)) { | ||
761 | log("utmpx_perform_login: utmp_write_library() failed"); | ||
762 | return 0; | ||
763 | } | ||
764 | #else | ||
765 | if (!utmpx_write_direct(li, &ut)) { | ||
766 | log("utmpx_perform_login: utmp_write_direct() failed"); | ||
767 | return 0; | ||
768 | } | ||
769 | #endif | ||
770 | return 1; | ||
771 | } /* utmpx_perform_login() */ | ||
772 | |||
773 | |||
774 | static int | ||
775 | utmpx_perform_logout(struct logininfo *li) { | ||
776 | struct utmpx utx; | ||
777 | |||
778 | memset(&utx, '\0', sizeof(utx)); | ||
779 | set_utmpx_time(li, &utx); | ||
780 | line_stripname(utx.ut_line, li->line, sizeof(utx.ut_line)); | ||
781 | #ifdef HAVE_ID_IN_UTMPX | ||
782 | line_abbrevname(utx.ut_id, li->line, sizeof(utx.ut_id)); | ||
783 | #endif | ||
784 | #ifdef HAVE_TYPE_IN_UTMPX | ||
785 | utx.ut_type = DEAD_PROCESS; | ||
786 | #endif | ||
787 | |||
788 | #ifdef UTMPX_USE_LIBRARY | ||
789 | utmpx_write_library(li, &utx); | ||
790 | #else | ||
791 | utmpx_write_direct(li, &utx); | ||
792 | #endif | ||
793 | |||
794 | return 1; | ||
795 | } /* utmpx_perform_logout() */ | ||
796 | |||
797 | |||
798 | int | ||
799 | utmpx_write_entry(struct logininfo *li) { | ||
800 | |||
801 | switch(li->type) { | ||
802 | case LTYPE_LOGIN: | ||
803 | return utmpx_perform_login(li); | ||
804 | case LTYPE_LOGOUT: | ||
805 | return utmpx_perform_logout(li); | ||
806 | default: | ||
807 | log("utmpx_write_entry: invalid type field"); | ||
808 | return 0; | ||
809 | } | ||
810 | } /* utmpx_write_entry() */ | ||
811 | |||
812 | |||
813 | #endif | ||
814 | /* USE_UTMPX */ | ||
815 | |||
816 | |||
817 | /** | ||
818 | ** wtmp functions | ||
819 | **/ | ||
820 | |||
821 | #ifdef USE_WTMP | ||
822 | |||
823 | # include <utmp.h> | ||
824 | |||
825 | /* write a wtmp entry direct to the end of the file */ | ||
826 | /* This code is a slight modification of code in OpenBSD's logwtmp.c | ||
827 | * (in libutil) and so is subject to the OpenBSD licensing terms */ | ||
828 | static int | ||
829 | wtmp_write(struct logininfo *li, struct utmp *ut) { | ||
830 | struct stat buf; | ||
831 | int fd, ret = 1; | ||
832 | |||
833 | if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) < 0) { | ||
834 | log("wtmp_write: problem writing %s: %s", | ||
835 | WTMP_FILE, strerror(errno)); | ||
836 | return 0; | ||
837 | } | ||
838 | |||
839 | if (fstat(fd, &buf) == 0) | ||
840 | if (write(fd, (char *)ut, sizeof(struct utmp)) != | ||
841 | sizeof(struct utmp)) { | ||
842 | ftruncate(fd, buf.st_size); | ||
843 | log("wtmp_write: problem writing %s: %s", | ||
844 | WTMP_FILE, strerror(errno)); | ||
845 | ret = 0; | ||
846 | } | ||
847 | (void)close(fd); | ||
848 | |||
849 | return ret; | ||
850 | } /* wtmp_write() */ | ||
851 | |||
852 | |||
853 | |||
854 | static int | ||
855 | wtmp_perform_login(struct logininfo *li) { | ||
856 | struct utmp ut; | ||
857 | |||
858 | construct_utmp(li, &ut); | ||
859 | return wtmp_write(li, &ut); | ||
860 | } /* wtmp_perform_login() */ | ||
861 | |||
862 | |||
863 | static int | ||
864 | wtmp_perform_logout(struct logininfo *li) { | ||
865 | struct utmp ut; | ||
866 | |||
867 | construct_utmp(li, &ut); | ||
868 | /* blank out unnecessary fields */ | ||
869 | memset(&(ut.ut_name), '\0', sizeof(ut.ut_name)); | ||
870 | #ifdef HAVE_ID_IN_UTMP | ||
871 | memset(&(ut.ut_id), '\0', sizeof(ut.ut_id)); | ||
872 | #endif | ||
873 | #ifdef HAVE_HOST_IN_UTMP | ||
874 | memset(&(ut.ut_host), '\0', sizeof(ut.ut_host)); | ||
875 | #endif | ||
876 | #ifdef HAVE_ADDR_IN_UTMP | ||
877 | memset(&(ut.ut_addr), '\0', sizeof(ut.ut_addr)); | ||
878 | #endif | ||
879 | return wtmp_write(li, &ut); | ||
880 | } /* wtmp_perform_logout() */ | ||
881 | |||
882 | |||
883 | int | ||
884 | wtmp_write_entry(struct logininfo *li) { | ||
885 | |||
886 | switch(li->type) { | ||
887 | case LTYPE_LOGIN: | ||
888 | return wtmp_perform_login(li); | ||
889 | case LTYPE_LOGOUT: | ||
890 | return wtmp_perform_logout(li); | ||
891 | default: | ||
892 | log("wtmp_write_entry: invalid type field"); | ||
893 | return 0; | ||
894 | } | ||
895 | } /* wtmp_write_entry() */ | ||
896 | |||
897 | |||
898 | |||
899 | int | ||
900 | wtmp_get_entry(struct logininfo *li) { | ||
901 | struct stat st; | ||
902 | struct utmp ut; | ||
903 | int fd; | ||
904 | |||
905 | if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) { | ||
906 | log("wtmp_get_entry: problem opening %s: %s", | ||
907 | WTMP_FILE, strerror(errno)); | ||
908 | return 0; | ||
909 | } | ||
910 | |||
911 | if (fstat(fd, &st) != 0) { | ||
912 | log("wtmp_get_entry: couldn't stat %s: %s", | ||
913 | WTMP_FILE, strerror(errno)); | ||
914 | close(fd); | ||
915 | return 0; | ||
916 | } | ||
917 | |||
918 | (void)lseek(fd, (off_t)(0-sizeof(struct utmp)), SEEK_END); | ||
919 | |||
920 | do { | ||
921 | if (read(fd, &ut, sizeof(ut)) != sizeof(ut)) { | ||
922 | log("wtmp_get_entry: read of %s failed: %s", | ||
923 | WTMP_FILE, strerror(errno)); | ||
924 | close (fd); | ||
925 | return 0; | ||
926 | } | ||
927 | |||
928 | /* Logouts are recorded as a blank username on a particular line. | ||
929 | * So, we just need to find the username in struct utmp */ | ||
930 | if ( strncmp(li->username, ut.ut_user, 8) == 0 ) { | ||
931 | /* note we've already made sure there's a time in struct utmp */ | ||
932 | #ifdef HAVE_TIME_IN_UTMP | ||
933 | li->tv_sec = ut.ut_time; | ||
934 | #else | ||
935 | # if HAVE_TV_IN_UTMP | ||
936 | li->tv_sec = ut.ut_tv.tv_sec; | ||
937 | # endif | ||
938 | #endif | ||
939 | line_fullname(li->line, ut.ut_line, sizeof(ut.ut_line)); | ||
940 | #ifdef HAVE_HOST_IN_UTMP | ||
941 | strlcpy(li->hostname, ut.ut_host, sizeof(ut.ut_host)); | ||
942 | #endif | ||
943 | } | ||
944 | if (lseek(fd, (off_t)(0-2*sizeof(struct utmp)), SEEK_CUR) == -1) { | ||
945 | close (fd); | ||
946 | return 0; | ||
947 | } | ||
948 | } while (li->tv_sec == 0); | ||
949 | |||
950 | return 1; | ||
951 | } /* wtmp_get_entry() */ | ||
952 | |||
953 | |||
954 | #endif | ||
955 | /* USE_WTMP */ | ||
956 | |||
957 | |||
958 | /** | ||
959 | ** wtmpx functions | ||
960 | **/ | ||
961 | |||
962 | #ifdef USE_WTMPX | ||
963 | |||
964 | # include <utmpx.h> | ||
965 | |||
966 | /* write a wtmpx entry direct to the end of the file */ | ||
967 | /* This code is a slight modification of code in OpenBSD's logwtmp.c | ||
968 | * (in libutil) and so is subject to the OpenBSD licensing terms */ | ||
969 | static int | ||
970 | wtmpx_write(struct logininfo *li, struct utmpx *utx) { | ||
971 | struct stat buf; | ||
972 | int fd, ret = 1; | ||
973 | |||
974 | if ((fd = open(WTMPX_FILE, O_WRONLY|O_APPEND, 0)) < 0) { | ||
975 | log("wtmpx_write: problem opening %s: %s", | ||
976 | WTMPX_FILE, strerror(errno)); | ||
977 | return 0; | ||
978 | } | ||
979 | |||
980 | if (fstat(fd, &buf) == 0) | ||
981 | if (write(fd, (char *)utx, sizeof(struct utmpx)) != | ||
982 | sizeof(struct utmpx)) { | ||
983 | ftruncate(fd, buf.st_size); | ||
984 | log("wtmpx_write: problem writing %s: %s", | ||
985 | WTMPX_FILE, strerror(errno)); | ||
986 | ret = 0; | ||
987 | } | ||
988 | (void)close(fd); | ||
989 | |||
990 | return ret; | ||
991 | } /* wtmpx_write() */ | ||
992 | |||
993 | |||
994 | |||
995 | static int | ||
996 | wtmpx_perform_login(struct logininfo *li) { | ||
997 | struct utmpx utx; | ||
998 | |||
999 | construct_utmpx(li, &utx); | ||
1000 | return wtmpx_write(li, &utx); | ||
1001 | } /* wtmpx_perform_login() */ | ||
1002 | |||
1003 | |||
1004 | static int | ||
1005 | wtmpx_perform_logout(struct logininfo *li) { | ||
1006 | struct utmpx utx; | ||
1007 | |||
1008 | construct_utmpx(li, &utx); | ||
1009 | /* blank out unnecessary fields */ | ||
1010 | memset(&(utx.ut_name), '\0', sizeof(utx.ut_name)); | ||
1011 | #ifdef HAVE_ID_IN_UTMPX | ||
1012 | memset(&(utx.ut_id), '\0', sizeof(utx.ut_id)); | ||
1013 | #endif | ||
1014 | #ifdef HAVE_HOST_IN_UTMPX | ||
1015 | memset(&(utx.ut_host), '\0', sizeof(utx.ut_host)); | ||
1016 | #endif | ||
1017 | #ifdef HAVE_ADDR_IN_UTMPX | ||
1018 | memset(&(utx.ut_addr), '\0', sizeof(utx.ut_addr)); | ||
1019 | #endif | ||
1020 | return wtmpx_write(li, &utx); | ||
1021 | |||
1022 | } /* wtmpx_perform_logout() */ | ||
1023 | |||
1024 | |||
1025 | int | ||
1026 | wtmpx_write_entry(struct logininfo *li) { | ||
1027 | |||
1028 | switch(li->type) { | ||
1029 | case LTYPE_LOGIN: | ||
1030 | return wtmpx_perform_login(li); | ||
1031 | case LTYPE_LOGOUT: | ||
1032 | return wtmpx_perform_logout(li); | ||
1033 | default: | ||
1034 | log("wtmpx_write_entry: invalid type field"); | ||
1035 | return 0; | ||
1036 | } | ||
1037 | } /* wtmpx_write_entry() */ | ||
1038 | |||
1039 | |||
1040 | |||
1041 | int | ||
1042 | wtmpx_get_entry(struct logininfo *li) { | ||
1043 | struct stat st; | ||
1044 | struct utmpx utx; | ||
1045 | int fd; | ||
1046 | |||
1047 | if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) { | ||
1048 | log("wtmpx_get_entry: problem opening %s: %s", | ||
1049 | WTMPX_FILE, strerror(errno)); | ||
1050 | return 0; | ||
1051 | } | ||
1052 | |||
1053 | if (fstat(fd, &st) != 0) { | ||
1054 | log("wtmpx_get_entry: couldn't stat %s: %s", | ||
1055 | WTMP_FILE, strerror(errno)); | ||
1056 | close(fd); | ||
1057 | return 0; | ||
1058 | } | ||
1059 | |||
1060 | (void)lseek(fd, (off_t)(0-sizeof(struct utmpx)), SEEK_END); | ||
1061 | |||
1062 | do { | ||
1063 | if (read(fd, &utx, sizeof(utx)) != sizeof(utx)) { | ||
1064 | log("wtmpx_get_entry: read of %s failed: %s", | ||
1065 | WTMPX_FILE, strerror(errno)); | ||
1066 | close (fd); | ||
1067 | return 0; | ||
1068 | } | ||
1069 | |||
1070 | /* Logouts are recorded as a blank username on a particular line. | ||
1071 | * So, we just need to find the username in struct utmpx */ | ||
1072 | if ( strncmp(li->username, utx.ut_user, 8) == 0 ) { | ||
1073 | /* note we've already made sure there's a time in struct utmp */ | ||
1074 | #ifdef HAVE_TV_IN_UTMPX | ||
1075 | li->tv_sec = utx.ut_tv.tv_sec; | ||
1076 | #else | ||
1077 | # ifdef HAVE_TIME_IN_UTMPX | ||
1078 | li->tv_sec = utx.ut_time; | ||
1079 | # endif | ||
1080 | #endif | ||
1081 | line_fullname(li->line, utx.ut_line, sizeof(utx.ut_line)); | ||
1082 | #ifdef HAVE_HOST_IN_UTMPX | ||
1083 | strlcpy(li->hostname, utx.ut_host, sizeof(utx.ut_line)); | ||
1084 | #endif | ||
1085 | } | ||
1086 | if (lseek(fd, (off_t)(0-2*sizeof(struct utmpx)), SEEK_CUR) == -1) { | ||
1087 | close (fd); | ||
1088 | return 0; | ||
1089 | } | ||
1090 | } while (li->tv_sec == 0); | ||
1091 | return 1; | ||
1092 | } /* wtmpx_get_entry() */ | ||
1093 | |||
1094 | |||
1095 | |||
1096 | #endif | ||
1097 | /* USE_WTMPX */ | ||
1098 | |||
1099 | |||
1100 | |||
1101 | /** | ||
1102 | ** libutil login() functions | ||
1103 | **/ | ||
1104 | |||
1105 | #ifdef USE_LOGIN | ||
1106 | |||
1107 | #ifdef HAVE_UTMP_H | ||
1108 | # include <utmp.h> | ||
1109 | #endif | ||
1110 | #ifdef HAVE_UTIL_H | ||
1111 | # include <util.h> | ||
1112 | #endif | ||
1113 | #ifdef USE_TIMEVAL | ||
1114 | # include <sys/time.h> | ||
1115 | #else | ||
1116 | # include <time.h> | ||
1117 | #endif | ||
1118 | |||
1119 | static int | ||
1120 | syslogin_perform_login(struct logininfo *li) { | ||
1121 | struct utmp *ut; | ||
1122 | |||
1123 | if (! (ut = (struct utmp *)malloc(sizeof(struct utmp)))) { | ||
1124 | log("syslogin_perform_login: couldn't malloc()"); | ||
1125 | return 0; | ||
1126 | } | ||
1127 | construct_utmp(li, ut); | ||
1128 | login(ut); | ||
1129 | |||
1130 | return 1; | ||
1131 | } /* syslogin_perform_login() */ | ||
1132 | |||
1133 | static int | ||
1134 | syslogin_perform_logout(struct logininfo *li) { | ||
1135 | |||
1136 | #ifdef HAVE_LOGOUT | ||
1137 | char line[8]; | ||
1138 | |||
1139 | (void)line_stripname(line, li->line, sizeof(line)); | ||
1140 | |||
1141 | if (!logout(line)) { | ||
1142 | log("syslogin_perform_logout: logout() returned an error"); | ||
1143 | # ifdef HAVE_LOGWTMP | ||
1144 | } else { | ||
1145 | logwtmp(line, "", ""); | ||
1146 | } | ||
1147 | # endif | ||
1148 | /* TODO: what to do if we have login, but no logout? | ||
1149 | * what if logout but no logwtmp? All routines are in libutil | ||
1150 | * so they should all be there, but... */ | ||
1151 | #endif | ||
1152 | return 1; | ||
1153 | } /* syslogin_perform_logout() */ | ||
1154 | |||
1155 | |||
1156 | |||
1157 | int | ||
1158 | syslogin_write_entry(struct logininfo *li) { | ||
1159 | |||
1160 | switch (li->type) { | ||
1161 | case LTYPE_LOGIN: | ||
1162 | return syslogin_perform_login(li); | ||
1163 | case LTYPE_LOGOUT: | ||
1164 | return syslogin_perform_logout(li); | ||
1165 | default: | ||
1166 | log("syslogin_write_entry: Invalid type field"); | ||
1167 | return 0; | ||
1168 | } | ||
1169 | } /* utmp_write_entry() */ | ||
1170 | |||
1171 | |||
1172 | #endif | ||
1173 | /* USE_LOGIN */ | ||
1174 | |||
1175 | /* end of file log-syslogin.c */ | ||
1176 | |||
1177 | |||
1178 | /** | ||
1179 | ** lastlog functions | ||
1180 | **/ | ||
1181 | |||
1182 | #ifdef USE_LASTLOG | ||
1183 | |||
1184 | #ifdef HAVE_LASTLOG_H | ||
1185 | # include <lastlog.h> | ||
1186 | #else | ||
1187 | # if !defined(USE_UTMP) && !defined(USE_WTMP) | ||
1188 | # include <utmp.h> | ||
1189 | # endif | ||
1190 | #endif | ||
1191 | |||
1192 | |||
1193 | static void | ||
1194 | lastlog_construct(struct logininfo *li, | ||
1195 | struct lastlog *last) { | ||
1196 | /* clear the structure */ | ||
1197 | memset(last, '\0', sizeof(struct lastlog)); | ||
1198 | |||
1199 | (void)line_stripname(last->ll_line, li->line, | ||
1200 | sizeof(last->ll_line)); | ||
1201 | strlcpy(last->ll_host, li->hostname, sizeof(last->ll_host)); | ||
1202 | last->ll_time = li->tv_sec; | ||
1203 | } /* lastlog_construct() */ | ||
1204 | |||
1205 | |||
1206 | #define LL_FILE 1 | ||
1207 | #define LL_DIR 2 | ||
1208 | #define LL_OTHER 3 | ||
1209 | |||
1210 | static int | ||
1211 | lastlog_filetype(char *filename) { | ||
1212 | struct stat st; | ||
1213 | |||
1214 | if ( stat(LASTLOG_FILE, &st) != 0) { | ||
1215 | log("lastlog_perform_login: Couldn't stat %s: %s", | ||
1216 | LASTLOG_FILE, strerror(errno)); | ||
1217 | return 0; | ||
1218 | } | ||
1219 | |||
1220 | if (S_ISDIR(st.st_mode)) | ||
1221 | return LL_DIR; | ||
1222 | else if (S_ISREG(st.st_mode)) | ||
1223 | return LL_FILE; | ||
1224 | else | ||
1225 | return LL_OTHER; | ||
1226 | } /* lastlog_filetype() */ | ||
1227 | |||
1228 | |||
1229 | /* open the file (using filemode) and seek to the login entry */ | ||
1230 | static int | ||
1231 | lastlog_openseek(struct logininfo *li, int *fd, int filemode) { | ||
1232 | |||
1233 | off_t offset; | ||
1234 | int type; | ||
1235 | char lastlog_file[1024]; | ||
1236 | |||
1237 | type = lastlog_filetype(LASTLOG_FILE); | ||
1238 | switch (type) { | ||
1239 | case LL_FILE: | ||
1240 | strlcpy(lastlog_file, LASTLOG_FILE, sizeof(lastlog_file)); | ||
1241 | break; | ||
1242 | case LL_DIR: | ||
1243 | snprintf(lastlog_file, sizeof(lastlog_file), "%s/%s", | ||
1244 | LASTLOG_FILE, li->username); | ||
1245 | break; | ||
1246 | default: | ||
1247 | log("lastlog_openseek: %.100s is not a file or directory!", | ||
1248 | LASTLOG_FILE); | ||
1249 | return 0; | ||
1250 | } /* switch */ | ||
1251 | |||
1252 | *fd = open(lastlog_file, filemode); | ||
1253 | if ( *fd < 0) { | ||
1254 | log("lastlog_openseek: Couldn't open %s: %s", | ||
1255 | lastlog_file, strerror(errno)); | ||
1256 | return 0; | ||
1257 | } | ||
1258 | |||
1259 | /* find this uid's offset in the lastlog file */ | ||
1260 | offset = (off_t) ( (long)li->uid * sizeof(struct lastlog)); | ||
1261 | |||
1262 | if ( lseek(*fd, offset, SEEK_SET) != offset ) { | ||
1263 | log("lastlog_openseek: %s->lseek(): %s", | ||
1264 | lastlog_file, strerror(errno)); | ||
1265 | return 0; | ||
1266 | } | ||
1267 | return 1; | ||
1268 | } /* lastlog_openseek() */ | ||
1269 | |||
1270 | static int | ||
1271 | lastlog_perform_login(struct logininfo *li) { | ||
1272 | struct lastlog last; | ||
1273 | int fd; | ||
1274 | |||
1275 | /* create our struct lastlog */ | ||
1276 | lastlog_construct(li, &last); | ||
1277 | |||
1278 | /* write the entry */ | ||
1279 | if (lastlog_openseek(li, &fd, O_RDWR)) { | ||
1280 | if ( write(fd, &last, sizeof(struct lastlog)) | ||
1281 | != sizeof(struct lastlog) ) { | ||
1282 | log("lastlog_write_filemode: Error writing to %s: %s", | ||
1283 | LASTLOG_FILE, strerror(errno)); | ||
1284 | return 0; | ||
1285 | } | ||
1286 | return 1; | ||
1287 | } else | ||
1288 | return 0; | ||
1289 | } /* lastlog_perform_login() */ | ||
1290 | |||
1291 | |||
1292 | int | ||
1293 | lastlog_write_entry(struct logininfo *li) { | ||
1294 | |||
1295 | switch(li->type) { | ||
1296 | case LTYPE_LOGIN: | ||
1297 | return lastlog_perform_login(li); | ||
1298 | default: | ||
1299 | log("lastlog_write_entry: Invalid type field"); | ||
1300 | return 0; | ||
1301 | } | ||
1302 | } /* lastlog_write_entry() */ | ||
1303 | |||
1304 | |||
1305 | |||
1306 | static void | ||
1307 | lastlog_populate_entry(struct logininfo *li, | ||
1308 | struct lastlog *last) { | ||
1309 | line_fullname(li->line, last->ll_line, sizeof(li->line)); | ||
1310 | strlcpy(li->hostname, last->ll_host, sizeof(li->hostname)); | ||
1311 | li->tv_sec = last->ll_time; | ||
1312 | } /* lastlog_populate_entry() */ | ||
1313 | |||
1314 | |||
1315 | |||
1316 | int | ||
1317 | lastlog_get_entry(struct logininfo *li) { | ||
1318 | struct lastlog last; | ||
1319 | int fd; | ||
1320 | |||
1321 | if (lastlog_openseek(li, &fd, O_RDONLY)) { | ||
1322 | if ( read(fd, &last, sizeof(struct lastlog)) | ||
1323 | != sizeof(struct lastlog) ) { | ||
1324 | log("lastlog_write_filemode: Error reading from %s: %s", | ||
1325 | LASTLOG_FILE, strerror(errno)); | ||
1326 | return 0; | ||
1327 | } else { | ||
1328 | lastlog_populate_entry(li, &last); | ||
1329 | return 1; | ||
1330 | } | ||
1331 | |||
1332 | } else | ||
1333 | return 0; | ||
1334 | } /* lastlog_get_entry() */ | ||
1335 | |||
1336 | |||
1337 | #endif | ||
1338 | /* USE_LASTLOG */ | ||
1339 | |||
1340 | |||
1341 | /** | ||
1342 | ** lastlog retrieval functions | ||
1343 | **/ | ||
1344 | |||
1345 | /* take the uid in li and return the last login time */ | ||
1346 | int | ||
1347 | getlast_entry(struct logininfo *li) { | ||
1348 | |||
1349 | #ifdef USE_LASTLOG | ||
1350 | if (lastlog_get_entry(li)) | ||
1351 | return 1; | ||
1352 | else | ||
1353 | return 0; | ||
1354 | #else | ||
1355 | /* !USE_LASTLOG */ | ||
1356 | /* Try to retrieve the last login time from another source */ | ||
1357 | |||
1358 | # if defined(USE_WTMP) && (defined(HAVE_TIME_IN_UTMP) || defined(HAVE_TV_IN_UTMP)) | ||
1359 | |||
1360 | /* retrieve last login time from utmp */ | ||
1361 | if (wtmp_get_entry(li)) | ||
1362 | return 1; | ||
1363 | else | ||
1364 | return 0; | ||
1365 | |||
1366 | # else | ||
1367 | # if defined(USE_WTMPX) && (defined(HAVE_TIME_IN_UTMPX) || defined(HAVE_TV_IN_UTMPX)) | ||
1368 | |||
1369 | /* retrieve last login time from utmpx */ | ||
1370 | if (wtmpx_get_entry(li)) | ||
1371 | return 1; | ||
1372 | else | ||
1373 | return 0; | ||
1374 | |||
1375 | # else | ||
1376 | |||
1377 | /* no means of retrieving last login time */ | ||
1378 | return 0; | ||
1379 | # endif | ||
1380 | # endif | ||
1381 | |||
1382 | #endif | ||
1383 | /* USE_LASTLOG */ | ||
1384 | |||
1385 | } | ||