source: trunk/src/sh_unix.c@ 167

Last change on this file since 167 was 167, checked in by katerina, 17 years ago

First parts of changes for MODI_TXT
File size: 112.0 KB
RevLine 
[1]1/* SAMHAIN file system integrity testing */
2/* Copyright (C) 1999 Rainer Wichmann */
3/* */
4/* This program is free software; you can redistribute it */
5/* and/or modify */
6/* it under the terms of the GNU General Public License as */
7/* published by */
8/* the Free Software Foundation; either version 2 of the License, or */
9/* (at your option) any later version. */
10/* */
11/* This program is distributed in the hope that it will be useful, */
12/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
13/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
14/* GNU General Public License for more details. */
15/* */
16/* You should have received a copy of the GNU General Public License */
17/* along with this program; if not, write to the Free Software */
18/* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20#include "config_xor.h"
21
22
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <ctype.h>
[98]27#ifdef HAVE_LINUX_FS_H
28#include <linux/fs.h>
29#endif
[1]30
31#ifdef HAVE_MEMORY_H
32#include <memory.h>
33#endif
34
35#ifdef HAVE_UNISTD_H
36#include <errno.h>
37#include <signal.h>
38#include <pwd.h>
39#include <grp.h>
40#include <sys/types.h>
41#include <sys/stat.h>
42#include <sys/resource.h>
43#include <fcntl.h>
44#include <unistd.h>
45#include <sys/wait.h>
46
47/*********************
48#ifdef HAVE_SYS_VFS_H
49#include <sys/vfs.h>
50#endif
51**********************/
52#endif
53
54#if TIME_WITH_SYS_TIME
55#include <sys/time.h>
56#include <time.h>
57#else
58#if HAVE_SYS_TIME_H
59#include <sys/time.h>
60#else
61#include <time.h>
62#endif
63#endif
64
65#ifdef HAVE_SYS_SELECT_H
66#include <sys/select.h>
67#endif
68
69#ifndef FD_SET
70#define NFDBITS 32
71#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
72#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
73#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
74#endif /* !FD_SET */
75#ifndef FD_SETSIZE
76#define FD_SETSIZE 32
77#endif
78#ifndef FD_ZERO
79#define FD_ZERO(p) memset((char *)(p), '\0', sizeof(*(p)))
80#endif
81
82
83#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
84#include <sys/mman.h>
85#endif
86
87#include "samhain.h"
88#include "sh_error.h"
89#include "sh_unix.h"
90#include "sh_utils.h"
91#include "sh_mem.h"
92#include "sh_hash.h"
93#include "sh_tools.h"
94#include "sh_tiger.h"
95#include "sh_prelink.h"
[137]96#include "sh_pthread.h"
[1]97
98/* moved here from far below
99 */
100#include <netdb.h>
101
102#define SH_NEED_PWD_GRP
103#define SH_NEED_GETHOSTBYXXX
104#include "sh_static.h"
105
106#ifndef HAVE_LSTAT
107#define lstat stat
108#endif
109
110#if defined(S_IFLNK) && !defined(S_ISLNK)
111#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
112#else
113#if !defined(S_ISLNK)
114#define S_ISLNK(mode) (0)
115#endif
116#endif
117
118#if defined(S_IFSOCK) && !defined(S_ISSOCK)
119#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
120#else
121#if !defined(S_ISSOCK)
122#define S_ISSOCK(mode) (0)
123#endif
124#endif
125
[40]126#if defined(S_IFDOOR) && !defined(S_ISDOOR)
127#define S_ISDOOR(mode) (((mode) & S_IFMT) == S_IFDOOR)
128#else
129#if !defined(S_ISDOOR)
130#define S_ISDOOR(mode) (0)
131#endif
132#endif
133
134#if defined(S_IFPORT) && !defined(S_ISPORT)
135#define S_ISPORT(mode) (((mode) & S_IFMT) == S_IFPORT)
136#else
137#if !defined(S_ISPORT)
138#define S_ISPORT(mode) (0)
139#endif
140#endif
141
[105]142#define SH_KEY_NULL _("000000000000000000000000000000000000000000000000")
[40]143
[1]144#undef FIL__
145#define FIL__ _("sh_unix.c")
146
147unsigned long mask_PRELINK = MASK_PRELINK_;
148unsigned long mask_USER0 = MASK_USER_;
149unsigned long mask_USER1 = MASK_USER_;
[27]150unsigned long mask_USER2 = MASK_USER_;
151unsigned long mask_USER3 = MASK_USER_;
152unsigned long mask_USER4 = MASK_USER_;
[1]153unsigned long mask_ALLIGNORE = MASK_ALLIGNORE_;
154unsigned long mask_ATTRIBUTES = MASK_ATTRIBUTES_;
155unsigned long mask_LOGFILES = MASK_LOGFILES_;
156unsigned long mask_LOGGROW = MASK_LOGGROW_;
157unsigned long mask_READONLY = MASK_READONLY_;
158unsigned long mask_NOIGNORE = MASK_NOIGNORE_;
159
160
161extern char **environ;
162
163int sh_unix_maskreset()
164{
165 mask_PRELINK = MASK_PRELINK_;
166 mask_USER0 = MASK_USER_;
167 mask_USER1 = MASK_USER_;
[27]168 mask_USER2 = MASK_USER_;
169 mask_USER3 = MASK_USER_;
170 mask_USER4 = MASK_USER_;
[1]171 mask_ALLIGNORE = MASK_ALLIGNORE_;
172 mask_ATTRIBUTES = MASK_ATTRIBUTES_;
173 mask_LOGFILES = MASK_LOGFILES_;
174 mask_LOGGROW = MASK_LOGGROW_;
175 mask_READONLY = MASK_READONLY_;
176 mask_NOIGNORE = MASK_NOIGNORE_;
177 return 0;
178}
179
180
181#ifdef SYS_SIGLIST_DECLARED
182/* extern const char * const sys_siglist[]; */
183#else
184char * sh_unix_siglist (int signum)
185{
186 switch (signum)
187 {
188#ifdef SIGHUP
189 case SIGHUP:
190 return _("Hangup");
191#endif
192#ifdef SIGINT
193 case SIGINT:
194 return _("Interrupt");
195#endif
196#ifdef SIGQUIT
197 case SIGQUIT:
198 return _("Quit");
199#endif
200#ifdef SIGILL
201 case SIGILL:
202 return _("Illegal instruction");
203#endif
204#ifdef SIGTRAP
205 case SIGTRAP:
206 return _("Trace/breakpoint trap");
207#endif
208#ifdef SIGABRT
209 case SIGABRT:
210 return _("IOT trap/Abort");
211#endif
212#ifdef SIGBUS
213 case SIGBUS:
214 return _("Bus error");
215#endif
216#ifdef SIGFPE
217 case SIGFPE:
218 return _("Floating point exception");
219#endif
220#ifdef SIGUSR1
221 case SIGUSR1:
222 return _("User defined signal 1");
223#endif
224#ifdef SIGSEGV
225 case SIGSEGV:
226 return _("Segmentation fault");
227#endif
228#ifdef SIGUSR2
229 case SIGUSR2:
230 return _("User defined signal 2");
231#endif
232#ifdef SIGPIPE
233 case SIGPIPE:
234 return _("Broken pipe");
235#endif
236#ifdef SIGALRM
237 case SIGALRM:
238 return _("Alarm clock");
239#endif
240#ifdef SIGTERM
241 case SIGTERM:
242 return _("Terminated");
243#endif
244#ifdef SIGSTKFLT
245 case SIGSTKFLT:
246 return _("Stack fault");
247#endif
248#ifdef SIGCHLD
249 case SIGCHLD:
250 return _("Child exited");
251#endif
252#ifdef SIGCONT
253 case SIGCONT:
254 return _("Continued");
255#endif
256#ifdef SIGSTOP
257 case SIGSTOP:
258 return _("Stopped");
259#endif
260#ifdef SIGTSTP
261 case SIGTSTP:
262 return _("Stop typed at tty");
263#endif
264#ifdef SIGTTIN
265 case SIGTTIN:
266 return _("Stopped (tty input)");
267#endif
268#ifdef SIGTTOU
269 case SIGTTOU:
270 return _("Stopped (tty output)");
271#endif
272#ifdef SIGURG
273 case SIGURG:
274 return _("Urgent condition");
275#endif
276#ifdef SIGXCPU
277 case SIGXCPU:
278 return _("CPU time limit exceeded");
279#endif
280#ifdef SIGXFSZ
281 case SIGXFSZ:
282 return _("File size limit exceeded");
283#endif
284#ifdef SIGVTALRM
285 case SIGVTALRM:
286 return _("Virtual time alarm");
287#endif
288#ifdef SIGPROF
289 case SIGPROF:
290 return _("Profile signal");
291#endif
292#ifdef SIGWINCH
293 case SIGWINCH:
294 return _("Window size changed");
295#endif
296#ifdef SIGIO
297 case SIGIO:
298 return _("Possible I/O");
299#endif
300#ifdef SIGPWR
301 case SIGPWR:
302 return _("Power failure");
303#endif
304#ifdef SIGUNUSED
305 case SIGUNUSED:
306 return _("Unused signal");
307#endif
308 }
309 return _("Unknown");
310}
311#endif
312
313
314/* Log from within a signal handler without using any
315 * functions that are not async signal safe.
316 *
317 * This is the safe_itoa helper function.
318 */
319char * safe_itoa(int i, char * str, int size)
320{
321 unsigned int u;
322 int iisneg = 0;
323 char *p = &str[size-1];
324
325 *p = '\0';
326 if (i < 0) {
327 iisneg = 1;
328 u = ((unsigned int)(-(1+i))) + 1;
329 } else {
330 u = i;
331 }
332 do {
333 --p;
334 *p = '0' + (u % 10);
335 u /= 10;
[22]336 } while (u && (p != str));
337 if ((iisneg == 1) && (p != str)) {
[1]338 --p;
339 *p = '-';
340 }
341 return p;
342}
343
344/* Log from within a signal handler without using any
345 * functions that are not async signal safe.
346 *
347 * This is the safe_logger function.
348 * Arguments: signal (signal number), method (0=logger, 1=stderr), thepid (pid)
349 */
350extern int OnlyStderr;
351
[22]352int safe_logger (int signal, int method, char * details)
[1]353{
[34]354 unsigned int i = 0;
[1]355 int status = -1;
356 struct stat buf;
357 pid_t newpid;
358 char str[128];
359 char * p;
[22]360
[1]361 char l0[64], l1[64], l2[64], l3[64];
362 char a0[32], a1[32], a2[32];
363 char e0[128];
364 char msg[128];
[22]365
[1]366 char * locations[] = { NULL, NULL, NULL, NULL, NULL };
367 char * envp[] = { NULL, NULL };
368 char * argp[] = { NULL, NULL, NULL, NULL, NULL };
[22]369
370 pid_t thepid = getpid();
371
[1]372 if ((sh.flag.isdaemon == S_FALSE) || (OnlyStderr == S_TRUE))
373 method = 1;
[22]374
[1]375 /* seems that solaris cc needs this way of initializing ...
376 */
377 locations[0] = l0;
378 locations[1] = l1;
379 locations[2] = l2;
380 locations[3] = l3;
[22]381
[1]382 envp[0] = e0;
[22]383
[1]384 argp[0] = a0;
385 argp[1] = a1;
386 argp[2] = a2;
[22]387
[1]388 sl_strlcpy(msg, _("samhain["), 128);
389 p = safe_itoa((int) thepid, str, 128);
390 if (p && *p)
391 sl_strlcat(msg, p, 128);
392 if (signal == 0)
393 {
[22]394 if (details == NULL) {
395 sl_strlcat(msg, _("]: out of memory"), 128);
396 } else {
397 sl_strlcat(msg, _("]: "), 128);
398 sl_strlcat(msg, details, 128);
399 }
[1]400 }
401 else
402 {
403 sl_strlcat(msg, _("]: exit on signal "), 128);
404 p = safe_itoa(signal, str, 128);
405 if (p && *p)
406 sl_strlcat(msg, p, 128);
407 }
408
409 if (method == 1) {
410#ifndef STDERR_FILENO
411#define STDERR_FILENO 2
412#endif
[153]413 int retval = 0;
414 do {
415 retval = write(STDERR_FILENO, msg, strlen(msg));
416 } while (retval < 0 && errno == EINTR);
417 do {
418 retval = write(STDERR_FILENO, "\n", 1);
419 } while (retval < 0 && errno == EINTR);
[1]420 return 0;
421 }
[22]422
423 sl_strlcpy (l0, _("/usr/bin/logger"), 64);
424 sl_strlcpy (l1, _("/usr/sbin/logger"), 64);
425 sl_strlcpy (l2, _("/usr/ucb/logger"), 64);
426 sl_strlcpy (l3, _("/bin/logger"), 64);
427
428 sl_strlcpy (a0, _("logger"), 32);
429 sl_strlcpy (a1, _("-p"), 32);
430 sl_strlcpy (a2, _("daemon.alert"), 32);
431
432 sl_strlcpy (e0,
433 _("PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/ucb:/usr/local/bin"),
434 128);
435
[1]436 while (locations[i] != NULL) {
437 status = stat(locations[i], &buf);
438 if (status == 0)
439 break;
440 ++i;
441 }
442
443 if (locations[i] != NULL) {
444 argp[3] = msg;
445 newpid = fork();
446 if (newpid == 0) {
447 execve(locations[i], argp, envp);
448 _exit(1);
449 }
450 else if (newpid > 0) {
451 waitpid(newpid, &status, WUNTRACED);
452 }
453 }
454 return 0;
455}
456
[34]457void safe_fatal (char * details,
458 char * file, int line)
[22]459{
460 char msg[128];
461 char str[128];
462 char * p;
[34]463 int signal = 0;
464 int method = 0;
465
[22]466 p = safe_itoa((int) line, str, 128);
467 sl_strlcpy(msg, _("FATAL: "), 128);
468 sl_strlcat(msg, file, 128);
469 sl_strlcat(msg, ": ", 128);
470 if (p && (*p)) {
471 sl_strlcat(msg, p , 128);
472 sl_strlcat(msg, ": ", 128);
473 }
474 sl_strlcat(msg, details, 128);
[153]475 (void) safe_logger (signal, method, msg);
[22]476 _exit(EXIT_FAILURE);
477}
[1]478
479extern char sh_sig_msg[64];
480
481volatile int immediate_exit_normal = 0;
482
483#if defined(SA_SIGACTION_WORKS)
484static
485void sh_unix_sigexit (int mysignal, siginfo_t * signal_info, void * signal_add)
486#else
487static
488void sh_unix_sigexit (int mysignal)
489#endif
490{
491
492#if defined(SA_SIGACTION_WORKS)
493 if (signal_info != NULL && signal_info->si_code == SI_USER &&
494 mysignal != SIGTERM && mysignal != SIGINT)
495 {
496 return;
497 }
498
499 /* avoid compiler warning (unused var)
500 */
501 (void) signal_add;
502#endif
503
504 /*
505 * Block re-entry
506 */
507 if (immediate_exit_normal > 0)
508 {
509 ++immediate_exit_normal;
510 if ((skey != NULL) && (immediate_exit_normal == 2))
511 memset (skey, '\0', sizeof(sh_key_t));
512 if (immediate_exit_normal == 2)
513 {
[153]514 int val_return;
515
516 do {
517 val_return = chdir ("/");
518 } while (val_return < 0 && errno == EINTR);
519
[22]520 safe_logger (mysignal, 0, NULL);
[1]521 }
522 _exit(mysignal);
523 }
524 else
525 {
526 immediate_exit_normal = 1;
527 }
528
529#ifdef SYS_SIGLIST_DECLARED
530 strncpy (sh_sig_msg, sys_siglist[mysignal], 40);
531#else
532 strncpy (sh_sig_msg, sh_unix_siglist(mysignal), 40);
533#endif
534 sh_sig_msg[63] = '\0';
535
536 ++sig_raised;
537 ++sig_urgent;
538 sig_termfast = 1;
539 return;
540}
541
542volatile int immediate_exit_fast = 0;
543
544#if defined(SA_SIGACTION_WORKS)
545static
546void sh_unix_sigexit_fast (int mysignal, siginfo_t * signal_info,
547 void * signal_add)
548#else
549static
550void sh_unix_sigexit_fast (int mysignal)
551#endif
552{
[154]553#if defined(SL_DEBUG)
554 int retval;
555#endif
556
[1]557#if defined(SA_SIGACTION_WORKS)
558 if (signal_info != NULL && signal_info->si_code == SI_USER)
559 {
560 return;
561 }
562#endif
563
564 /* avoid compiler warning (unused var)
565 */
566#if defined(SA_SIGACTION_WORKS)
567 (void) signal_add;
568#endif
569
570 /* Check whether the heap is ok; otherwise _exit
571 */
572#if !defined(SL_DEBUG)
573 ++immediate_exit_fast;
574 if (skey != NULL && immediate_exit_fast < 2)
575 memset (skey, '\0', sizeof(sh_key_t));
576 if (immediate_exit_fast < 2)
[22]577 safe_logger (mysignal, 0, NULL);
[1]578 _exit(mysignal);
579#else
580
581 /* debug code
582 */
583 if (immediate_exit_fast == 1)
584 {
585 ++immediate_exit_fast;
586 if (skey != NULL)
587 memset (skey, '\0', sizeof(sh_key_t));
588#ifdef WITH_MESSAGE_QUEUE
589 close_ipc ();
590#endif
[22]591 safe_logger (mysignal, 0, NULL);
[154]592 do {
593 retval = chdir ("/");
594 } while (retval < 0 && errno == EINTR);
[1]595 raise(SIGFPE);
596 }
597 else if (immediate_exit_fast == 2)
598 {
[154]599 do {
600 retval = chdir ("/");
601 } while (retval < 0 && errno == EINTR);
[1]602 raise(SIGFPE);
603 }
604 else if (immediate_exit_fast != 0)
605 {
606 _exit(mysignal);
607 }
608
609 ++immediate_exit_fast;
610
611 /* The FPE|BUS|SEGV|ILL signals leave the system in an undefined
612 * state, thus it is best to exit immediately.
613 */
614#ifdef SYS_SIGLIST_DECLARED
615 strncpy (sh_sig_msg, sys_siglist[mysignal], 40);
616#else
617 strncpy (sh_sig_msg, sh_unix_siglist(mysignal), 40);
618#endif
[131]619 sh_sig_msg[63] = '\0';
[1]620
621 sl_stack_print();
622
623 /* Try to push out an error message.
624 */
625 sh_error_handle ((-1), FIL__, __LINE__, mysignal, MSG_EXIT_NORMAL,
626 sh.prg_name, sh_sig_msg);
627
628 if (skey != NULL)
629 memset (skey, '\0', sizeof(sh_key_t));
630#ifdef WITH_MESSAGE_QUEUE
631 close_ipc ();
632#endif
633
[154]634 do {
635 retval = chdir ("/");
636 } while (retval < 0 && errno == EINTR);
637
[1]638 raise(SIGFPE);
639#endif
640}
641
642
643static
644void sh_unix_sigaction (int mysignal)
645{
646 ++sig_raised;
647#ifdef SIGUSR1
648 if (mysignal == SIGUSR1)
649 sig_debug_switch = 1;
650#endif
651#ifdef SIGUSR2
652 if (mysignal == SIGUSR2)
653 {
[19]654 ++sig_suspend_switch;
[1]655 ++sig_urgent;
656 }
657#endif
658#ifdef SIGHUP
659 if (mysignal == SIGHUP)
660 sig_config_read_again = 1;
661#endif
662#ifdef SIGTTOU
663 if (mysignal == SIGTTOU)
664 sig_force_check = 1;
665#endif
666#ifdef SIGABRT
667 if (mysignal == SIGABRT)
668 sig_fresh_trail = 1;
669#endif
670#ifdef SIGQUIT
671 if (mysignal == SIGQUIT)
672 {
[131]673 sig_terminate = 1;
[1]674 ++sig_urgent;
675 }
676#endif
677#ifdef SIGTERM
678 if (mysignal == SIGTERM)
679 {
680 strncpy (sh_sig_msg, _("Terminated"), 40);
681 sig_termfast = 1;
682 ++sig_urgent;
683 }
684#endif
685
686 return;
687}
688
689static
690void sh_unix_siginstall (int goDaemon)
691{
692 struct sigaction act, act_fast, act2, oldact, ignact;
693#if defined (SH_WITH_SERVER)
694 (void) goDaemon;
695#endif
696
697 SL_ENTER(_("sh_unix_siginstall"));
698
699 ignact.sa_handler = SIG_IGN; /* signal action */
700 sigemptyset( &ignact.sa_mask ); /* set an empty mask */
701 ignact.sa_flags = 0; /* init sa_flags */
702
703#if defined(SA_SIGACTION_WORKS)
704 act.sa_sigaction = &sh_unix_sigexit; /* signal action */
705#else
706 act.sa_handler = &sh_unix_sigexit; /* signal action */
707#endif
708
709 sigfillset ( &act.sa_mask ); /* set a full mask */
710
711
712 /* Block all but deadly signals.
713 */
714#ifdef SIGILL
715 sigdelset ( &act.sa_mask, SIGILL );
716#endif
717#ifndef SL_DEBUG
718#ifdef SIGFPE
719 sigdelset ( &act.sa_mask, SIGFPE );
720#endif
721#endif
722#ifdef SIGSEGV
723 sigdelset ( &act.sa_mask, SIGSEGV );
724#endif
725#ifdef SIGBUS
726 sigdelset ( &act.sa_mask, SIGBUS );
727#endif
728
729#if defined(SA_SIGACTION_WORKS)
730 act_fast.sa_sigaction = &sh_unix_sigexit_fast; /* signal action */
731#else
732 act_fast.sa_handler = &sh_unix_sigexit_fast; /* signal action */
733#endif
734
735 sigfillset ( &act_fast.sa_mask ); /* set a full mask */
736
737#ifdef SIGILL
738 sigdelset ( &act_fast.sa_mask, SIGILL );
739#endif
740#ifndef SL_DEBUG
741#ifdef SIGFPE
742 sigdelset ( &act_fast.sa_mask, SIGFPE );
743#endif
744#endif
745#ifdef SIGSEGV
746 sigdelset ( &act_fast.sa_mask, SIGSEGV );
747#endif
748#ifdef SIGBUS
749 sigdelset ( &act_fast.sa_mask, SIGBUS );
750#endif
751
752
753 /* Use siginfo to verify origin of signal, if possible.
754 */
755#if defined(SA_SIGACTION_WORKS)
756 act.sa_flags = SA_SIGINFO;
757 act_fast.sa_flags = SA_SIGINFO;
758#else
759 act.sa_flags = 0;
760 act_fast.sa_flags = 0;
761#endif
762
763 /* Do not block the signal from being received in its handler ...
764 * (is this a good or a bad idea ??).
765 */
766#if defined(SA_NOMASK)
767 act_fast.sa_flags |= SA_NOMASK;
768#elif defined(SA_NODEFER)
769 act_fast.sa_flags |= SA_NODEFER;
770#endif
771
772
773 act2.sa_handler = &sh_unix_sigaction; /* signal action */
774 sigemptyset( &act2.sa_mask ); /* set an empty mask */
775 act2.sa_flags = 0; /* init sa_flags */
776
777 /* signals to control the daemon */
778
779#ifdef SIGHUP
780 retry_sigaction(FIL__, __LINE__, SIGHUP, &act2, &oldact);
781#endif
782#ifdef SIGABRT
783 retry_sigaction(FIL__, __LINE__, SIGABRT, &act2, &oldact);
784#endif
785#ifdef SIGUSR1
786 retry_sigaction(FIL__, __LINE__, SIGUSR1, &act2, &oldact);
787#endif
788#ifdef SIGUSR2
789 retry_sigaction(FIL__, __LINE__, SIGUSR2, &act2, &oldact);
790#endif
791#ifdef SIGQUIT
792 retry_sigaction(FIL__, __LINE__, SIGQUIT, &act2, &oldact);
793#endif
794#ifdef SIGTERM
[131]795 retry_sigaction(FIL__, __LINE__, SIGTERM, &act, &oldact);
[1]796#endif
797
798 /* fatal signals that may cause termination */
799
800#ifdef SIGILL
801 retry_sigaction(FIL__, __LINE__, SIGILL, &act_fast, &oldact);
802#endif
803#ifndef SL_DEBUG
804#ifdef SIGFPE
805 retry_sigaction(FIL__, __LINE__, SIGFPE, &act_fast, &oldact);
806#endif
807#endif
808#ifdef SIGSEGV
809 retry_sigaction(FIL__, __LINE__, SIGSEGV, &act_fast, &oldact);
810#endif
811#ifdef SIGBUS
812 retry_sigaction(FIL__, __LINE__, SIGBUS, &act_fast, &oldact);
813#endif
814
815 /* other signals */
816
817#ifdef SIGINT
818 retry_sigaction(FIL__, __LINE__, SIGINT, &act, &oldact);
819#endif
820#ifdef SIGPIPE
[132]821#ifdef HAVE_PTHREAD
822 retry_sigaction(FIL__, __LINE__, SIGPIPE, &ignact, &oldact);
823#else
[1]824 retry_sigaction(FIL__, __LINE__, SIGPIPE, &act, &oldact);
825#endif
[132]826#endif
[1]827#ifdef SIGALRM
828 retry_sigaction(FIL__, __LINE__, SIGALRM, &ignact, &oldact);
829#endif
830#ifdef SIGTSTP
831 retry_sigaction(FIL__, __LINE__, SIGTSTP, &ignact, &oldact);
832#endif
833#ifdef SIGTTIN
834 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
835#endif
836#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
837#ifdef SIGTTOU
838 if (goDaemon == 1)
839 retry_sigaction(FIL__, __LINE__, SIGTTOU, &act2, &oldact);
840 else
841 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
842#endif
843#else
844#ifdef SIGTTOU
845 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
846#endif
847#endif
848
849#ifdef SIGTRAP
850#if !defined(SCREW_IT_UP)
851 retry_sigaction(FIL__, __LINE__, SIGTRAP, &act, &oldact);
852#endif
853#endif
854
855#ifdef SIGPOLL
856 retry_sigaction(FIL__, __LINE__, SIGPOLL, &ignact, &oldact);
857#endif
858#if defined(SIGPROF) && !defined(SH_PROFILE)
859 retry_sigaction(FIL__, __LINE__, SIGPROF, &ignact, &oldact);
860#endif
861#ifdef SIGSYS
862 retry_sigaction(FIL__, __LINE__, SIGSYS, &act, &oldact);
863#endif
864#ifdef SIGURG
865 retry_sigaction(FIL__, __LINE__, SIGURG, &ignact, &oldact);
866#endif
867#if defined(SIGVTALRM) && !defined(SH_PROFILE)
868 retry_sigaction(FIL__, __LINE__, SIGVTALRM, &ignact, &oldact);
869#endif
870#ifdef SIGXCPU
871 retry_sigaction(FIL__, __LINE__, SIGXCPU, &act, &oldact);
872#endif
873#ifdef SIGXFSZ
874 retry_sigaction(FIL__, __LINE__, SIGXFSZ, &act, &oldact);
875#endif
876
877#ifdef SIGEMT
878 retry_sigaction(FIL__, __LINE__, SIGEMT, &ignact, &oldact);
879#endif
880#ifdef SIGSTKFLT
881 retry_sigaction(FIL__, __LINE__, SIGSTKFLT, &act, &oldact);
882#endif
883#ifdef SIGIO
884 retry_sigaction(FIL__, __LINE__, SIGIO, &ignact, &oldact);
885#endif
886#ifdef SIGPWR
887 retry_sigaction(FIL__, __LINE__, SIGPWR, &act, &oldact);
888#endif
889
890#ifdef SIGLOST
891 retry_sigaction(FIL__, __LINE__, SIGLOST, &ignact, &oldact);
892#endif
893#ifdef SIGUNUSED
894 retry_sigaction(FIL__, __LINE__, SIGUNUSED, &ignact, &oldact);
895#endif
896
897 SL_RET0(_("sh_unix_siginstall"));
898}
899
900/* ---------------------------------------------------------------- */
901
902/* checksum the own binary
903 */
[22]904int sh_unix_self_hash (const char * c)
[1]905{
906 char message[512];
[133]907 char hashbuf[KEYBUF_SIZE];
[1]908
909 SL_ENTER(_("sh_unix_self_hash"));
910
911 if (c == NULL)
912 {
913 sh.exec.path[0] = '\0';
914 SL_RETURN((0), _("sh_unix_self_hash"));
915 }
916 sl_strlcpy(sh.exec.path, c, SH_PATHBUF);
917
918 sl_strlcpy(sh.exec.hash,
[160]919 sh_tiger_hash (c, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
[1]920 KEY_LEN+1);
921 sl_snprintf(message, 512, _("%s has checksum: %s"),
922 sh.exec.path, sh.exec.hash);
923 message[511] = '\0';
924 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
925 message, _("sh_unix_self_hash"));
[93]926 if (0 == sl_strcmp(sh.exec.hash, SH_KEY_NULL ))
[1]927 {
928 dlog(1, FIL__, __LINE__,
929 _("Could not checksum my own executable because of the\nfollowing error: %s: %s\n\nPossible reasons include:\n Wrong path in configure file option SamhainPath=/path/to/executable\n No read permission for the effective UID: %d\n"),
930 sh.exec.path, sl_get_errmsg(), (int) sl_ret_euid());
931 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_NOACCESS,
932 (long) sh.real.uid, c);
933 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
934 }
935 SL_RETURN((0), _("sh_unix_self_hash"));
936}
937
938int sh_unix_self_check ()
939{
940 char newhash[KEY_LEN+1];
941 char message[512];
[133]942 char hashbuf[KEYBUF_SIZE];
[1]943
944 SL_ENTER(_("sh_unix_self_check"));
945 if (sh.exec.path == NULL || sh.exec.path[0] == '\0')
946 SL_RETURN((0), _("sh_unix_self_check"));
947
[133]948 sl_strlcpy(newhash,
[160]949 sh_tiger_hash (sh.exec.path, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
[133]950 KEY_LEN+1);
[1]951 if (0 == sl_strncmp(sh.exec.hash,
952 newhash,
953 KEY_LEN))
954 SL_RETURN((0), _("sh_unix_self_check"));
955
956
957 dlog(1, FIL__, __LINE__,
958 _("The checksum of the executable: %s has changed since startup (%s -> %s).\n"),
959 sh.exec.path, sh.exec.hash, newhash);
960
961 sl_snprintf(message, 512,
962 _("The checksum of %s has changed since startup (%s -> %s)"),
963 sh.exec.path, sh.exec.hash, newhash);
964 message[511] = '\0';
965
966 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
967 message, _("sh_unix_self_check"));
968 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_E_AUTH,
969 sh.exec.path);
970 SL_RETURN((-1), _("sh_unix_self_check"));
971}
972
973
974/* ---------------------------------------------------------------- */
975
976
977/* added Tue Feb 22 10:36:44 NFT 2000 Rainer Wichmann */
[22]978static int tf_add_trusted_user_int(const char * c)
[1]979{
[137]980 struct passwd * w;
[1]981 int count;
982 uid_t pwid = (uid_t)-1;
983
[131]984#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
985 struct passwd pwd;
986 char buffer[SH_PWBUF_SIZE];
987#endif
988
[1]989 SL_ENTER(_("tf_add_trusted_user_int"));
990
991 /* First check for a user name.
992 */
[131]993#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
[137]994 sh_getpwnam_r(c, &pwd, buffer, sizeof(buffer), &w);
[131]995#else
996 w = sh_getpwnam(c);
997#endif
998
999 if ((w != NULL) && ((pwid = w->pw_uid) > 0))
[1]1000 goto succe;
1001
1002 /* Failed, so check for a numerical value.
1003 */
1004 pwid = strtol(c, (char **)NULL, 10);
1005 if (pwid > 0 && pwid < 65535)
1006 goto succe;
1007
1008 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1009 _("add trusted user"), c);
1010 SL_RETURN((-1), _("tf_add_trusted_user_int"));
1011
1012 succe:
1013 count = sl_trust_add_user(pwid);
1014 SL_RETURN((count), _("tf_add_trusted_user_int"));
1015}
1016
[22]1017int tf_add_trusted_user(const char * c)
[1]1018{
1019 int i;
1020 char * q;
1021 char * p = sh_util_strdup (c);
[131]1022#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1023 char * saveptr;
1024#endif
1025
[1]1026 SL_ENTER(_("tf_add_trusted_user"));
1027
[131]1028#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1029 q = strtok_r(p, ", \t", &saveptr);
1030#else
[1]1031 q = strtok(p, ", \t");
[131]1032#endif
[1]1033 if (!q)
1034 {
1035 SH_FREE(p);
1036 SL_RETURN((-1), _("tf_add_trusted_user"));
1037 }
1038 while (q)
1039 {
1040 i = tf_add_trusted_user_int(q);
1041 if (SL_ISERROR(i))
1042 {
1043 SH_FREE(p);
1044 SL_RETURN((i), _("tf_add_trusted_user"));
1045 }
[131]1046#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1047 q = strtok_r(NULL, ", \t", &saveptr);
1048#else
[1]1049 q = strtok(NULL, ", \t");
[131]1050#endif
[1]1051 }
1052 SH_FREE(p);
1053 SL_RETURN((0), _("tf_add_trusted_user"));
1054}
1055
1056extern uid_t sl_trust_baduid();
1057extern gid_t sl_trust_badgid();
1058
1059#if defined(HOST_IS_CYGWIN) || defined(__cygwin__) || defined(__CYGWIN32__) || defined(__CYGWIN__)
1060int tf_trust_check (char * file, int mode)
1061{
1062 (void) file;
1063 (void) mode;
1064 return 0;
1065}
1066#else
1067int tf_trust_check (char * file, int mode)
1068{
1069 char * tmp;
1070 char * tmp2;
1071 char * p;
1072 int status;
1073 int level;
1074 uid_t ff_euid;
1075
1076 SL_ENTER(_("tf_trust_check"));
1077
1078 if (mode == SL_YESPRIV)
1079 sl_get_euid(&ff_euid);
1080 else
1081 sl_get_ruid(&ff_euid);
1082
1083#if defined(SH_WITH_SERVER)
1084 if (0 == sl_ret_euid()) /* privileges not dropped yet */
1085 {
[131]1086#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1087 struct passwd pwd;
1088 char buffer[SH_PWBUF_SIZE];
1089 struct passwd * tempres;
1090 sh_getpwnam_r(DEFAULT_IDENT, &pwd, buffer, sizeof(buffer), &tempres);
1091#else
[1]1092 struct passwd * tempres = sh_getpwnam(DEFAULT_IDENT);
[131]1093#endif
[1]1094
1095 if (!tempres)
1096 {
1097 dlog(1, FIL__, __LINE__,
1098 _("User %s does not exist. Please add the user to your system.\n"),
1099 DEFAULT_IDENT);
1100 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
1101 }
1102 ff_euid = tempres->pw_uid;
1103 }
1104#endif
1105
1106 status = sl_trustfile_euid(file, ff_euid);
1107
1108 if ( SL_ENONE != status)
1109 {
1110 if (status == SL_ESTAT)
1111 level = SH_ERR_ALL;
1112 else
1113 level = SH_ERR_ERR;
1114
1115 tmp = sh_util_safe_name (file);
1116 p = sl_trust_errfile();
1117 if (p && *p != '\0')
1118 {
1119 tmp2 = sh_util_safe_name (sl_trust_errfile());
1120 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST2,
1121 sl_error_string(status), tmp, tmp2);
1122 SH_FREE(tmp2);
1123 }
1124 else
1125 {
1126 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST1,
1127 sl_error_string(status), tmp);
1128 }
1129 SH_FREE(tmp);
1130
1131 if (status == SL_EBADUID || status == SL_EBADGID ||
1132 status == SL_EBADOTH || status == SL_ETRUNC ||
1133 status == SL_EINTERNAL )
1134 {
1135 switch (status) {
1136 case SL_EINTERNAL:
1137 dlog(1, FIL__, __LINE__,
1138 _("An internal error occured in the trustfile function.\n"));
1139 break;
1140 case SL_ETRUNC:
1141 tmp = sh_util_safe_name (file);
1142 dlog(1, FIL__, __LINE__,
1143 _("A filename truncation occured in the trustfile function.\nProbably the normalized filename for %s\nis too long. This may be due e.g. to deep or circular softlinks.\n"),
1144 tmp);
1145 SH_FREE(tmp);
1146 break;
1147 case SL_EBADOTH:
1148 tmp = sh_util_safe_name (file);
1149 p = sl_trust_errfile();
1150 dlog(1, FIL__, __LINE__,
1151 _("The path element: %s\nin the filename: %s is world writeable.\n"),
1152 p, tmp);
1153 SH_FREE(tmp);
1154 break;
1155 case SL_EBADUID:
1156 tmp = sh_util_safe_name (file);
1157 p = sl_trust_errfile();
1158 dlog(1, FIL__, __LINE__,
1159 _("The owner (UID = %ld) of the path element: %s\nin the filename: %s\nis not in the list of trusted users.\nTo fix the problem, you can:\n - run ./configure again with the option --with-trusted=0,...,UID\n where UID is the UID of the untrusted user, or\n - use the option TrustedUser=UID in the configuration file.\n"),
1160 (UID_CAST)sl_trust_baduid(), p, tmp);
1161 SH_FREE(tmp);
1162 break;
1163 case SL_EBADGID:
1164 tmp = sh_util_safe_name (file);
1165 p = sl_trust_errfile();
1166 dlog(1, FIL__, __LINE__,
1167 _("The path element: %s\nin the filename: %s\nis group writeable (GID = %ld), and at least one of the group\nmembers (UID = %ld) is not in the list of trusted users.\nTo fix the problem, you can:\n - run ./configure again with the option --with-trusted=0,...,UID\n where UID is the UID of the untrusted user, or\n - use the option TrustedUser=UID in the configuration file.\n"),
1168 p, tmp, (UID_CAST)sl_trust_badgid(),
1169 (UID_CAST)sl_trust_baduid());
1170 SH_FREE(tmp);
1171 break;
1172 default:
1173 break;
1174 }
1175
1176 SL_RETURN((-1), _("tf_trust_check"));
1177 }
1178 }
1179
1180 SL_RETURN((0), _("tf_trust_check"));
1181}
1182#endif
1183
1184#ifdef HAVE_INITGROUPS
1185#ifdef HOST_IS_OSF
1186int sh_unix_initgroups ( char * in_user, gid_t in_gid)
1187#else
1188int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1189#endif
1190{
1191 int status = -1;
1192 status = sh_initgroups (in_user, in_gid);
1193 if (status < 0)
1194 {
1195 if (errno == EPERM)
1196 return 0;
1197 if (errno == EINVAL)
1198 return 0;
1199 return -1;
1200 }
1201 return 0;
1202}
1203#else
1204int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1205{
1206 (void) in_user;
1207 (void) in_gid;
1208 return 0;
1209}
1210#endif
1211
1212#ifdef HAVE_INITGROUPS
[132]1213char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len);
[1]1214int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1215{
1216 int status = -1;
[132]1217 char user[SH_MINIBUF];
[1]1218
1219 SL_ENTER(_("sh_unix_initgroups2"));
1220
[132]1221 if (NULL == sh_unix_getUIDname (SH_ERR_ERR, in_pid, user, sizeof(user)))
[1]1222 SL_RETURN((-1), _("sh_unix_initgroups2"));
1223 status = sh_initgroups (user, in_gid);
1224 if (status < 0)
1225 {
1226 if (errno == EPERM)
1227 status = 0;
1228 if (errno == EINVAL)
1229 status = 0;
1230 }
1231 SL_RETURN((status), _("sh_unix_initgroups2"));
1232}
1233#else
1234int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1235{
1236 (void) in_pid;
1237 (void) in_gid;
1238 return 0;
1239}
1240#endif
1241
1242void sh_unix_closeall (int fd, int except)
1243{
1244 int fdx = fd;
1245#ifdef _SC_OPEN_MAX
1246 int fdlimit = sysconf (_SC_OPEN_MAX);
1247#else
1248#ifdef OPEN_MAX
1249 int fdlimit = OPEN_MAX;
1250#else
1251 int fdlimit = _POSIX_OPEN_MAX;
1252#endif
1253#endif
1254
1255 SL_ENTER(_("sh_unix_closeall"));
1256
1257 /* can't happen - so fix it :-(
1258 */
1259 if (fdlimit < 0)
[84]1260 fdlimit = 20; /* POSIX lower limit */
[1]1261
1262 if (fdlimit > 65536)
1263 fdlimit = 65536;
1264
1265 /* Close everything from fd (inclusive) up to fdlimit (exclusive).
1266 */
1267 while (fd < fdlimit)
1268 {
1269 if (fd == except)
1270 fd++;
1271 else if (slib_do_trace != 0 && fd == slib_trace_fd)
1272 fd++;
1273 else
1274 close(fd++);
1275 }
1276
1277 sl_dropall (fdx, except);
1278
1279 SL_RET0(_("sh_unix_closeall"));
1280}
1281
1282static void sh_unix_setlimits(void)
1283{
1284 struct rlimit limits;
1285
1286 SL_ENTER(_("sh_unix_setlimits"));
1287
1288 limits.rlim_cur = RLIM_INFINITY;
1289 limits.rlim_max = RLIM_INFINITY;
1290
1291#ifdef RLIMIT_CPU
1292 setrlimit (RLIMIT_CPU, &limits);
1293#endif
1294#ifdef RLIMIT_FSIZE
1295 setrlimit (RLIMIT_FSIZE, &limits);
1296#endif
1297#ifdef RLIMIT_DATA
1298 setrlimit (RLIMIT_DATA, &limits);
1299#endif
1300#ifdef RLIMIT_STACK
1301 setrlimit (RLIMIT_STACK, &limits);
1302#endif
1303#ifdef RLIMIT_RSS
1304 setrlimit (RLIMIT_RSS, &limits);
1305#endif
1306#ifdef RLIMIT_NPROC
1307 setrlimit (RLIMIT_NPROC, &limits);
1308#endif
1309#ifdef RLIMIT_MEMLOCK
1310 setrlimit (RLIMIT_MEMLOCK, &limits);
1311#endif
1312
1313#if !defined(SL_DEBUG)
1314 /* no core dumps
1315 */
1316 limits.rlim_cur = 0;
1317 limits.rlim_max = 0;
1318#ifdef RLIMIT_CORE
1319 setrlimit (RLIMIT_CORE, &limits);
1320#endif
1321#else
1322#ifdef RLIMIT_CORE
1323 setrlimit (RLIMIT_CORE, &limits);
1324#endif
1325#endif
1326
[8]1327 limits.rlim_cur = 1024;
1328 limits.rlim_max = 1024;
[1]1329
[8]1330#if defined(RLIMIT_NOFILE)
1331 setrlimit (RLIMIT_NOFILE, &limits);
1332#elif defined(RLIMIT_OFILE)
1333 setrlimit (RLIMIT_OFILE, &limits);
1334#endif
1335
[1]1336 SL_RET0(_("sh_unix_setlimits"));
1337}
1338
1339static void sh_unix_copyenv(void)
1340{
1341 char ** env0 = environ;
1342 char ** env1;
1343 int envlen = 0;
[22]1344 size_t len;
[1]1345
1346 SL_ENTER(_("sh_unix_copyenv"));
1347
1348 while (env0 != NULL && env0[envlen] != NULL) {
1349 /* printf("%2d: %s\n", envlen, env0[envlen]); */
1350 ++envlen;
1351 }
1352 ++envlen;
1353
1354 /* printf("-> %2d: slots allocated\n", envlen); */
1355 env1 = malloc (sizeof(char *) * envlen); /* only once */
1356 if (env1 == NULL)
1357 {
1358 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1359 SL_RET0(_("sh_unix_copyenv"));
1360 }
1361 env0 = environ;
1362 envlen = 0;
1363
[22]1364 while (env0 != NULL && env0[envlen] != NULL) {
1365 len = strlen(env0[envlen]) + 1;
1366 env1[envlen] = malloc (len); /* only once */
[1]1367 if (env1[envlen] == NULL)
1368 {
1369 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1370 SL_RET0(_("sh_unix_copyenv"));
1371 }
[22]1372 sl_strlcpy(env1[envlen], env0[envlen], len);
[1]1373 ++envlen;
1374 }
1375 env1[envlen] = NULL;
1376
1377 environ = env1;
1378 SL_RET0(_("sh_unix_copyenv"));
1379}
1380
1381/* delete all environment variables
1382 */
1383static void sh_unix_zeroenv(void)
1384{
1385 char * c;
1386 char ** env;
1387
1388 SL_ENTER(_("sh_unix_zeroenv"));
1389
1390 sh_unix_copyenv();
1391 env = environ;
1392
1393 while (env != NULL && *env != NULL) {
1394 c = strchr ((*env), '=');
1395#ifdef WITH_MYSQL
1396 /*
1397 * Skip the MYSQL_UNIX_PORT environment variable; MySQL may need it.
1398 */
1399 if (0 == sl_strncmp((*env), _("MYSQL_UNIX_PORT="), 16))
1400 {
1401 ++(env);
1402 continue;
1403 }
[18]1404 if (0 == sl_strncmp((*env), _("MYSQL_TCP_PORT="), 15))
1405 {
1406 ++(env);
1407 continue;
1408 }
1409 if (0 == sl_strncmp((*env), _("MYSQL_HOME="), 11))
1410 {
1411 ++(env);
1412 continue;
1413 }
[1]1414#endif
1415#ifdef WITH_ORACLE
1416 /*
1417 * Skip the ORACLE_HOME environment variable; Oracle may need it.
1418 */
1419 if (0 == sl_strncmp((*env), _("ORACLE_HOME="), 12))
1420 {
1421 ++(env);
1422 continue;
1423 }
1424#endif
1425 /*
1426 * Skip the TZ environment variable.
1427 */
1428 if (0 == sl_strncmp((*env), _("TZ="), 3))
1429 {
1430 ++(env);
1431 continue;
1432 }
1433 ++(env);
1434 if (c != NULL)
1435 {
1436 ++c;
1437 while ((*c) != '\0') {
1438 (*c) = '\0';
1439 ++c;
1440 }
1441 }
1442 }
1443
1444 SL_RET0(_("sh_unix_zeroenv"));
1445}
1446
1447
1448static void sh_unix_resettimer(void)
1449{
1450 struct itimerval this_timer;
1451
1452 SL_ENTER(_("sh_unix_resettimer"));
1453
1454 this_timer.it_value.tv_sec = 0;
1455 this_timer.it_value.tv_usec = 0;
1456
1457 this_timer.it_interval.tv_sec = 0;
1458 this_timer.it_interval.tv_usec = 0;
1459
1460 setitimer(ITIMER_REAL, &this_timer, NULL);
1461#if !defined(SH_PROFILE)
1462 setitimer(ITIMER_VIRTUAL, &this_timer, NULL);
1463 setitimer(ITIMER_PROF, &this_timer, NULL);
1464#endif
1465
1466 SL_RET0(_("sh_unix_resettimer"));
1467}
1468
1469static void sh_unix_resetsignals(void)
1470{
1471 int sig_num;
1472#ifdef NSIG
1473 int max_sig = NSIG;
1474#else
1475 int max_sig = 255;
1476#endif
1477 int test;
1478 struct sigaction act, oldact;
1479 int status;
1480
1481 sigset_t set_proc;
1482
1483 SL_ENTER(_("sh_unix_resetsignals"));
1484 /*
1485 * Reset the current signal mask (inherited from parent process).
1486 */
1487
1488 sigfillset(&set_proc);
1489
1490 do {
1491 errno = 0;
1492 test = sigprocmask(SIG_UNBLOCK, &set_proc, NULL);
1493 } while (test < 0 && errno == EINTR);
1494
1495 /*
1496 * Reset signal handling.
1497 */
1498
1499 act.sa_handler = SIG_DFL; /* signal action */
1500 sigemptyset( &act.sa_mask ); /* set an empty mask */
1501 act.sa_flags = 0; /* init sa_flags */
1502
1503 for (sig_num = 1; sig_num <= max_sig; ++sig_num)
1504 {
1505#if !defined(SH_PROFILE)
1506 test = retry_sigaction(FIL__, __LINE__, sig_num, &act, &oldact);
1507#else
1508 test = 0;
1509#endif
1510 if ((test == -1) && (errno != EINVAL))
1511 {
[132]1512 char errbuf[SH_ERRBUF_SIZE];
[1]1513 status = errno;
1514 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_SIG,
[132]1515 sh_error_message (status, errbuf, sizeof(errbuf)), sig_num);
[1]1516 }
1517 }
1518
1519 SL_RET0(_("sh_unix_resetsignals"));
1520}
1521
1522/* Get the local hostname (FQDN)
1523 */
1524#include <sys/socket.h>
1525
1526/* Required for BSD
1527 */
1528#ifdef HAVE_NETINET_IN_H
1529#include <netinet/in.h>
1530#endif
1531
1532#include <arpa/inet.h>
1533
[29]1534char * sh_unix_h_name (struct hostent * host_entry)
1535{
1536 char ** p;
1537 if (strchr(host_entry->h_name, '.')) {
1538 return host_entry->h_name;
1539 } else {
1540 for (p = host_entry->h_aliases; *p; ++p) {
1541 if (strchr(*p, '.'))
1542 return *p;
1543 }
1544 }
1545 return host_entry->h_name;
1546}
1547
[1]1548/* uname() on FreeBSD is broken, because the 'nodename' buf is too small
1549 * to hold a valid (leftmost) domain label.
1550 */
1551#if defined(HAVE_UNAME) && !defined(HOST_IS_FREEBSD)
1552#include <sys/utsname.h>
1553void sh_unix_localhost()
1554{
1555 struct utsname buf;
1556 struct hostent * he1;
1557 int i;
1558 int ddot = 0;
1559 int len;
1560 char * p;
1561 char hostname[256];
1562
1563
1564 SL_ENTER(_("sh_unix_localhost"));
1565
1566 (void) uname (&buf);
[22]1567 /* flawfinder: ignore */ /* ff bug, ff sees system() */
[1]1568 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1569 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1570 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1571
1572 /* Workaround for cases where nodename could be
1573 * a truncated FQDN.
1574 */
1575 if (strlen(buf.nodename) == (sizeof(buf.nodename)-1))
1576 {
1577 p = strchr(buf.nodename, '.');
1578 if (NULL != p) {
1579 *p = '\0';
1580 sl_strlcpy(hostname, buf.nodename, 256);
1581 } else {
1582#ifdef HAVE_GETHOSTNAME
1583 if (0 != gethostname(hostname, 256))
1584 {
1585 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1586 _("nodename returned by uname may be truncated"),
1587 _("sh_unix_localhost"));
1588 sl_strlcpy (hostname, buf.nodename, 256);
1589 }
1590 else
1591 {
1592 hostname[255] = '\0';
1593 }
1594#else
1595 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1596 _("nodename returned by uname may be truncated"),
1597 _("sh_unix_localhost"));
1598 sl_strlcpy(hostname, buf.nodename, 256);
1599#endif
1600 }
1601 }
1602 else
1603 {
1604 sl_strlcpy(hostname, buf.nodename, 256);
1605 }
1606
[134]1607 SH_MUTEX_LOCK(mutex_resolv);
[1]1608 he1 = sh_gethostbyname(hostname);
1609
[134]1610 if (he1 != NULL)
1611 {
1612 sl_strlcpy (sh.host.name, sh_unix_h_name(he1), SH_PATHBUF);
1613 }
1614 SH_MUTEX_UNLOCK(mutex_resolv);
1615
[1]1616 if (he1 == NULL)
1617 {
1618 dlog(1, FIL__, __LINE__,
1619 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN. For more information, see the entry about self-resolving under 'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1620 hostname);
1621 sl_strlcpy (sh.host.name, hostname, SH_PATHBUF);
1622 }
1623
1624
1625 /* check whether it looks like a FQDN
1626 */
1627 len = sl_strlen(sh.host.name);
1628 for (i = 0; i < len; ++i)
1629 if (sh.host.name[i] == '.') ++ddot;
1630
1631 if (ddot == 0 && he1 != NULL)
1632 {
1633 dlog(1, FIL__, __LINE__,
1634 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nRather, it resolves this to %s.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1635 hostname, sh.host.name);
1636 sl_strlcpy (sh.host.name,
1637 inet_ntoa (*(struct in_addr *) he1->h_addr),
1638 SH_PATHBUF);
1639 SL_RET0(_("sh_unix_localhost"));
1640 }
1641
1642 if (is_numeric(sh.host.name))
1643 {
1644 dlog(1, FIL__, __LINE__,
1645 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nRather, it resolves this to %s.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1646 hostname, sh.host.name);
1647 }
1648
1649 SL_RET0(_("sh_unix_localhost"));
1650}
1651#else
1652void sh_unix_localhost()
1653{
1654 struct hostent * he1;
1655 int i;
1656 int ddot = 0;
1657 int len;
1658 char hostname[1024];
1659
1660
1661 SL_ENTER(_("sh_unix_localhost"));
1662
1663 (void) gethostname (hostname, 1024);
1664 hostname[1023] = '\0';
[134]1665
1666 SH_MUTEX_LOCK(mutex_resolv);
[1]1667 he1 = sh_gethostbyname(hostname);
1668
1669 if (he1 != NULL)
1670 {
[29]1671 sl_strlcpy (sh.host.name, sh_unix_h_name(he1), SH_PATHBUF);
[1]1672 }
[134]1673 SH_MUTEX_UNLOCK(mutex_resolv);
1674
1675 if (he1 == NULL)
[1]1676 {
1677 dlog(1, FIL__, __LINE__,
1678 _("According to gethostname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1679 hostname);
1680 sl_strlcpy (sh.host.name, _("localhost"), SH_PATHBUF);
1681 SL_RET0(_("sh_unix_localhost"));
1682 }
1683
1684 /* check whether it looks like a FQDN
1685 */
1686 len = sl_strlen(sh.host.name);
1687 for (i = 0; i < len; ++i)
1688 if (sh.host.name[i] == '.') ++ddot;
1689 if (ddot == 0)
1690 {
1691 dlog(1, FIL__, __LINE__,
1692 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nRather, it resolves this to %s.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1693 hostname, sh.host.name);
1694 sl_strlcpy (sh.host.name,
1695 inet_ntoa (*(struct in_addr *) he1->h_addr),
1696 SH_PATHBUF);
1697 SL_RET0(_("sh_unix_localhost"));
1698 }
1699
1700 if (is_numeric(sh.host.name))
1701 {
1702 dlog(1, FIL__, __LINE__,
1703 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nRather, it resolves this to %s.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1704 hostname, sh.host.name);
1705 }
1706
1707 SL_RET0(_("sh_unix_localhost"));
1708}
1709#endif
1710
1711
1712void sh_unix_memlock()
1713{
1714 SL_ENTER(_("sh_unix_memlock"));
1715
1716 /* do this before dropping privileges
1717 */
1718#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
1719 if (skey->mlock_failed == SL_FALSE)
1720 {
[19]1721 if ( (-1) == sh_unix_mlock( FIL__, __LINE__,
1722 (char *) skey, sizeof (sh_key_t)) )
[1]1723 {
[134]1724 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[1]1725 skey->mlock_failed = SL_TRUE;
[134]1726 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]1727 }
1728 }
1729#else
1730 if (skey->mlock_failed == SL_FALSE)
1731 {
[134]1732 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[1]1733 skey->mlock_failed = SL_TRUE;
[134]1734 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]1735 }
1736#endif
1737
1738 SL_RET0(_("sh_unix_memlock"));
1739}
1740
1741#ifdef SH_WITH_SERVER
1742char * chroot_dir = NULL;
1743
[20]1744int sh_unix_set_chroot(const char * str)
[1]1745{
1746 size_t len;
1747 static int block = 0;
1748
1749 if (block == 1)
1750 return 0;
1751
1752 if (str && *str == '/')
1753 {
1754 len = strlen(str) + 1;
1755 chroot_dir = malloc(strlen(str) + 1); /* only once */
1756 if (!chroot_dir)
1757 {
1758 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1759 return 1;
1760 }
1761 sl_strlcpy(chroot_dir, str, len);
1762 block = 1;
1763 return 0;
1764 }
1765 return 1;
1766}
1767
1768int sh_unix_chroot()
1769{
1770 int status;
1771
1772 if (chroot_dir != NULL)
1773 {
1774 status = retry_aud_chdir(FIL__, __LINE__, chroot_dir);
1775 if ( (-1) == status )
1776 {
[132]1777 char errbuf[SH_ERRBUF_SIZE];
[1]1778 status = errno;
1779 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
[132]1780 sh_error_message (status, errbuf, sizeof(errbuf)), chroot_dir);
[1]1781 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1782 }
[22]1783 /* flawfinder: ignore */
[1]1784 return (chroot(chroot_dir));
1785 }
1786 return 0;
1787}
1788/* #ifdef SH_WITH_SERVER */
1789#else
1790int sh_unix_chroot() { return 0; }
1791#endif
1792
1793/* daemon mode
1794 */
1795static int block_setdeamon = 0;
1796
[20]1797int sh_unix_setdeamon(const char * dummy)
[1]1798{
1799 int res = 0;
1800
1801 SL_ENTER(_("sh_unix_setdeamon"));
1802
1803 if (block_setdeamon != 0)
1804 SL_RETURN((0),_("sh_unix_setdeamon"));
1805
1806 if (dummy == NULL)
1807 sh.flag.isdaemon = ON;
1808 else
1809 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1810
1811 if (sh.flag.opts == S_TRUE)
1812 block_setdeamon = 1;
1813
1814 SL_RETURN(res, _("sh_unix_setdeamon"));
1815}
1816#if defined(HAVE_LIBPRELUDE)
1817#include "sh_prelude.h"
1818#endif
1819
[20]1820int sh_unix_setnodeamon(const char * dummy)
[1]1821{
1822 int res = 0;
[132]1823
[1]1824 SL_ENTER(_("sh_unix_setnodeamon"));
1825
1826 if (block_setdeamon != 0)
1827 SL_RETURN((0),_("sh_unix_setmodeamon"));
1828
1829 if (dummy == NULL)
1830 sh.flag.isdaemon = OFF;
1831 else
1832 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1833
1834 if (sh.flag.opts == S_TRUE)
1835 block_setdeamon = 1;
1836
1837 SL_RETURN(res, _("sh_unix_setnodeamon"));
1838}
1839
1840int sh_unix_init(int goDaemon)
1841{
1842 int status;
1843 uid_t uid;
1844 pid_t oldpid = getpid();
1845#if defined(SH_WITH_SERVER)
1846 extern int sh_socket_open_int ();
1847#endif
[132]1848 char errbuf[SH_ERRBUF_SIZE];
[1]1849
1850 SL_ENTER(_("sh_unix_init"));
1851
1852 /* fork twice, exit the parent process
1853 */
1854 if (goDaemon == 1) {
1855
1856 switch (aud_fork(FIL__, __LINE__)) {
1857 case 0: break; /* child process continues */
1858 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1859 default: aud__exit(FIL__, __LINE__, 0); /* parent process exits */
1860 }
1861
1862 /* Child processes do not inherit page locks across a fork.
1863 * Error in next fork would return in this (?) thread of execution.
1864 */
1865 sh_unix_memlock();
1866
1867 setsid(); /* should not fail */
[162]1868 sh.pid = (UINT64) getpid();
[1]1869
1870 switch (aud_fork(FIL__, __LINE__)) {
1871 case 0: break; /* child process continues */
1872 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1873 default: aud__exit(FIL__, __LINE__, 0); /* parent process exits */
1874 }
1875
1876 /* Child processes do not inherit page locks across a fork.
1877 */
1878 sh_unix_memlock();
[162]1879 sh.pid = (UINT64) getpid();
[1]1880
1881 } else {
1882 setsid(); /* should not fail */
1883 }
1884
1885 /* set working directory
1886 */
1887#ifdef SH_PROFILE
1888 status = 0;
1889#else
1890 status = retry_aud_chdir(FIL__, __LINE__, "/");
1891#endif
1892 if ( (-1) == status )
1893 {
1894 status = errno;
1895 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
[132]1896 sh_error_message (status, errbuf, sizeof(errbuf)), "/");
[1]1897 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1898 }
1899
1900 /* reset timers
1901 */
1902 sh_unix_resettimer();
1903
1904 /* signal handlers
1905 */
1906 sh_unix_resetsignals();
1907#if defined(SCREW_IT_UP)
1908 sh_sigtrap_prepare();
1909#endif
1910 sh_unix_siginstall (goDaemon);
1911
1912 /* set file creation mask
1913 */
1914 (void) umask (0); /* should not fail */
1915
1916 /* set resource limits to maximum, and
1917 * core dump size to zero
1918 */
1919 sh_unix_setlimits();
1920
1921 /* zero out the environment (like PATH='\0')
1922 */
1923 sh_unix_zeroenv();
1924
1925 if (goDaemon == 1)
1926 {
[92]1927 /* Close first tree file descriptors
[84]1928 */
[92]1929 close (0); /* if running as daemon */
1930 close (1); /* if running as daemon */
1931 close (2); /* if running as daemon */
[84]1932
1933 /* Enable full error logging
1934 */
1935 sh_error_only_stderr (S_FALSE);
1936
1937 /* open first three streams to /dev/null
1938 */
1939 status = aud_open(FIL__, __LINE__, SL_NOPRIV, _("/dev/null"), O_RDWR, 0);
1940 if (status < 0)
1941 {
1942 status = errno;
1943 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
[132]1944 sh_error_message(status, errbuf, sizeof(errbuf)), _("open"));
[84]1945 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1946 }
1947
1948 status = retry_aud_dup(FIL__, __LINE__, 0);
1949 if (status >= 0)
1950 retry_aud_dup(FIL__, __LINE__, 0);
1951
1952 if (status < 0)
1953 {
1954 status = errno;
1955 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
[132]1956 sh_error_message(status, errbuf, sizeof(errbuf)), _("dup"));
[84]1957 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1958 }
1959
[86]1960 sh_error_enable_unsafe (S_TRUE);
[1]1961#if defined(HAVE_LIBPRELUDE)
1962 sh_prelude_reset ();
1963#endif
1964
1965 /* --- wait until parent has exited ---
1966 */
1967 while (1 == 1)
1968 {
1969 errno = 0;
1970 if (0 > aud_kill (FIL__, __LINE__, oldpid, 0) && errno == ESRCH)
1971 {
1972 break;
1973 }
1974 retry_msleep(0, 1);
1975 }
1976
1977 /* write PID file
1978 */
1979 status = sh_unix_write_pid_file();
1980 if (status < 0)
1981 {
1982 sl_get_euid(&uid);
1983 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_PIDFILE,
1984 (long) uid, sh.srvlog.alt);
1985 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1986 }
1987#if defined(SH_WITH_SERVER)
1988 sh_socket_open_int ();
1989#endif
1990 }
1991 else
1992 {
[86]1993 sh_error_enable_unsafe (S_TRUE);
[1]1994#if defined(HAVE_LIBPRELUDE)
1995 sh_prelude_reset ();
1996#endif
1997#if defined(SH_WITH_SERVER)
1998 sh_socket_open_int ();
1999#endif
2000 }
2001
2002 /* chroot (this is a no-op if no chroot dir is specified
2003 */
2004 status = sh_unix_chroot();
2005 if (status < 0)
2006 {
2007 status = errno;
2008 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
[132]2009 sh_error_message(status, errbuf, sizeof(errbuf)), _("chroot"));
[1]2010 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2011 }
2012
2013 /* drop capabilities
2014 */
2015 sl_drop_cap();
2016
2017 SL_RETURN((0),_("sh_unix_init"));
2018}
2019
2020/********************************************************
2021 *
2022 * TIME
2023 *
2024 ********************************************************/
2025
2026/* Figure out the time offset of the current timezone
2027 * in a portable way.
2028 */
2029char * t_zone(const time_t * xx)
2030{
2031 struct tm aa;
2032 struct tm bb;
2033 struct tm * cc;
2034 int sign = 0;
2035 int diff = 0;
2036 int hh, mm;
2037 static char tz[64];
2038
2039 SL_ENTER(_("t_zone"));
2040
[131]2041#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2042 cc = gmtime_r (xx, &aa);
2043#else
[1]2044 cc = gmtime (xx);
2045 memcpy (&aa, cc, sizeof(struct tm));
[131]2046#endif
2047
2048#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2049 cc = localtime_r (xx, &bb);
2050#else
[1]2051 cc = localtime (xx);
2052 memcpy (&bb, cc, sizeof(struct tm));
[131]2053#endif
[1]2054
2055 /* Check for datum wrap-around.
2056 */
2057 if (aa.tm_year < bb.tm_year)
2058 sign = (-1);
2059 else if (aa.tm_mon < bb.tm_mon)
2060 sign = (-1);
2061 else if (aa.tm_mday < bb.tm_mday)
2062 sign = (-1);
2063 else if (bb.tm_year < aa.tm_year)
2064 sign = ( 1);
2065 else if (bb.tm_mon < aa.tm_mon)
2066 sign = ( 1);
2067 else if (bb.tm_mday < aa.tm_mday)
2068 sign = ( 1);
2069
2070 diff = aa.tm_hour * 60 + aa.tm_min;
2071 diff = (bb.tm_hour * 60 + bb.tm_min) - diff;
2072 diff = diff - (sign * 24 * 60); /* datum wrap-around correction */
2073 hh = diff / 60;
2074 mm = diff - (hh * 60);
2075 sprintf (tz, _("%+03d%02d"), hh, mm); /* known to fit */
2076
2077 SL_RETURN(tz, _("t_zone"));
2078}
2079
2080unsigned long sh_unix_longtime ()
2081{
2082 return ((unsigned long)time(NULL));
2083}
2084
2085#ifdef HAVE_GETTIMEOFDAY
2086unsigned long sh_unix_notime ()
2087{
2088 struct timeval tv;
2089
2090 gettimeofday (&tv, NULL);
2091
2092 return ((unsigned long)(tv.tv_sec + tv.tv_usec * 10835 + getpid() + getppid()));
2093
2094}
2095#endif
2096
2097static int count_dev_time = 0;
2098
2099void reset_count_dev_time(void)
2100{
2101 count_dev_time = 0;
2102 return;
2103}
2104
[22]2105int sh_unix_settimeserver (const char * address)
[1]2106{
2107
2108 SL_ENTER(_("sh_unix_settimeserver"));
2109
2110 if (address != NULL && count_dev_time < 2
2111 && sl_strlen(address) < SH_PATHBUF)
2112 {
2113 if (count_dev_time == 0)
2114 sl_strlcpy (sh.srvtime.name, address, SH_PATHBUF);
2115 else
2116 sl_strlcpy (sh.srvtime.alt, address, SH_PATHBUF);
2117
2118 ++count_dev_time;
2119 SL_RETURN((0), _("sh_unix_settimeserver"));
2120 }
2121 SL_RETURN((-1), _("sh_unix_settimeserver"));
2122}
2123
2124
2125#ifdef HAVE_NTIME
2126#define UNIXEPOCH 2208988800UL /* difference between Unix time and net time
2127 * The UNIX EPOCH starts in 1970.
2128 */
2129#include <sys/socket.h>
2130#include <netinet/in.h>
2131#include <arpa/inet.h>
2132#include <netdb.h>
2133#include <ctype.h>
2134#endif
2135
2136/* Timeserver service. */
2137/* define is missing on HP-UX 10.20 */
2138#ifndef IPPORT_TIMESERVER
2139#define IPPORT_TIMESERVER 37
2140#endif
2141
[132]2142char * sh_unix_time (time_t thetime, char * buffer, size_t len)
[1]2143{
2144
2145 int status;
[132]2146 char AsciiTime[81]; /* local time */
[1]2147 time_t time_now;
2148 struct tm * time_ptr;
[131]2149#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2150 struct tm time_tm;
2151#endif
[1]2152#ifdef SH_USE_XML
2153 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2154#else
2155 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2156#endif
2157
2158#ifdef HAVE_NTIME
2159 int fd; /* network file descriptor */
2160 u_char net_time[4]; /* remote time in network format */
2161 static int failerr = 0; /* no net time */
2162 int fail = 0; /* no net time */
2163 int errflag;
2164 char errmsg[256];
2165 char error_call[SH_MINIBUF];
2166 int error_num;
2167#endif
2168
2169 SL_ENTER(_("sh_unix_time"));
2170
2171#ifdef HAVE_NTIME
2172 if (thetime == 0)
2173 {
2174 if (sh.srvtime.name[0] == '\0')
2175 {
2176 fail = 1;
2177 (void) time (&time_now);
2178 }
2179 else /* have a timeserver address */
2180 {
2181 fd = connect_port_2 (sh.srvtime.name, sh.srvtime.alt,
2182 IPPORT_TIMESERVER,
2183 error_call, &error_num, errmsg, sizeof(errmsg));
2184 if (fd >= 0)
2185 {
2186 if (4 != read_port (fd, (char *) net_time, 4, &errflag, 2))
2187 {
2188 fail = 1;
2189 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2190 MSG_E_NLOST,
2191 _("time"), sh.srvtime.name);
2192 }
2193 close(fd);
2194 }
2195 else
2196 {
2197 sh_error_handle ((-1), FIL__, __LINE__, error_num,
2198 MSG_E_NET, errmsg, error_call,
2199 _("time"), sh.srvtime.name);
2200 fail = 1;
2201 }
2202
2203 if (fail == 0)
2204 {
2205 time_now = ntohl(* (long *) net_time) - UNIXEPOCH;
2206 /* fprintf(stderr, "TIME IS %ld\n", time_now); */
2207 if (failerr == 1) {
2208 failerr = 0;
2209 sh_error_handle ((-1), FIL__, __LINE__, 0,
2210 MSG_E_NEST,
2211 _("time"), sh.srvtime.name);
2212 }
2213 }
2214 else
2215 {
2216 (void) time (&time_now);
2217 if (failerr == 0)
2218 {
2219 failerr = 1;
2220 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2221 MSG_SRV_FAIL,
2222 _("time"), sh.srvtime.name);
2223 }
2224 }
2225 }
2226 }
2227 else
2228 {
2229 time_now = thetime;
2230 }
2231
2232 /* #ifdef HAVE_NTIME */
2233#else
2234
2235 if (thetime == 0)
2236 {
2237 (void) time (&time_now);
2238 }
2239 else
2240 {
2241 time_now = thetime;
2242 }
2243
2244 /* #ifdef HAVE_NTIME */
2245#endif
2246
[132]2247 if (time_now == (-1) )
2248 {
2249 sl_strlcpy(buffer, _(deftime), len);
2250 SL_RETURN(buffer, _("sh_unix_time"));
2251 }
[1]2252 else
[131]2253 {
2254#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2255 time_ptr = localtime_r (&time_now, &time_tm);
2256#else
2257 time_ptr = localtime (&time_now);
2258#endif
2259 }
[1]2260 if (time_ptr != NULL)
2261 {
[132]2262 status = strftime (AsciiTime, sizeof(AsciiTime),
[1]2263#ifdef SH_USE_XML
2264 _("%Y-%m-%dT%H:%M:%S%%s"),
2265#else
2266 _("[%Y-%m-%dT%H:%M:%S%%s]"),
2267#endif
2268 time_ptr);
2269
[132]2270 sl_snprintf(buffer, len, AsciiTime, t_zone(&time_now));
[1]2271
[132]2272 if ( (status == 0) || (status == sizeof(AsciiTime)) )
2273 {
2274 sl_strlcpy(buffer, _(deftime), len);
2275 SL_RETURN( buffer, _("sh_unix_time"));
2276 }
[1]2277 else
[132]2278 {
2279 SL_RETURN(buffer, _("sh_unix_time"));
2280 }
[1]2281 }
2282
2283 /* last resort
2284 */
[132]2285 sl_strlcpy(buffer, _(deftime), len);
2286 SL_RETURN( buffer, _("sh_unix_time"));
[1]2287}
2288
2289static int sh_unix_use_localtime = S_FALSE;
2290
2291/* whether to use localtime for file timesatams in logs
2292 */
[22]2293int sh_unix_uselocaltime (const char * c)
[1]2294{
2295 int i;
2296 SL_ENTER(_("sh_unix_uselocaltime"));
2297 i = sh_util_flagval(c, &(sh_unix_use_localtime));
2298
2299 SL_RETURN(i, _("sh_unix_uselocaltime"));
2300}
2301
[132]2302char * sh_unix_gmttime (time_t thetime, char * buffer, size_t len)
[1]2303{
2304
2305 int status;
2306
2307 struct tm * time_ptr;
[131]2308#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS)
2309 struct tm time_tm;
2310#endif
[132]2311 char AsciiTime[81]; /* GMT time */
[1]2312#ifdef SH_USE_XML
2313 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2314#else
2315 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2316#endif
2317
2318 SL_ENTER(_("sh_unix_gmttime"));
2319
2320 if (sh_unix_use_localtime == S_FALSE)
[131]2321 {
2322#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2323 time_ptr = gmtime_r (&thetime, &time_tm);
2324#else
2325 time_ptr = gmtime (&thetime);
2326#endif
2327 }
[1]2328 else
[131]2329 {
2330#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2331 time_ptr = localtime_r (&thetime, &time_tm);
2332#else
2333 time_ptr = localtime (&thetime);
2334#endif
2335 }
[1]2336 if (time_ptr != NULL)
2337 {
2338 status = strftime (AsciiTime, 80,
2339#ifdef SH_USE_XML
2340 _("%Y-%m-%dT%H:%M:%S"),
2341#else
2342 _("[%Y-%m-%dT%H:%M:%S]"),
2343#endif
2344 time_ptr);
2345
[132]2346 if ( (status == 0) || (status == 80) )
2347 sl_strlcpy(buffer, _(deftime), len);
[1]2348 else
[132]2349 sl_strlcpy(buffer, AsciiTime, len);
2350 SL_RETURN( buffer, _("sh_unix_gmttime"));
[1]2351 }
2352
2353 /* last resort
2354 */
[132]2355 sl_strlcpy(buffer, _(deftime), len);
2356 SL_RETURN( buffer, _("sh_unix_gmttime"));
[1]2357}
2358
2359
[132]2360char * sh_unix_getUIDdir (int level, uid_t uid, char * out, size_t len)
[1]2361{
2362 struct passwd * tempres;
2363 int status = 0;
[131]2364#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2365 struct passwd pwd;
2366 char buffer[SH_PWBUF_SIZE];
2367#endif
[132]2368 char errbuf[SH_ERRBUF_SIZE];
[1]2369
2370 SL_ENTER(_("sh_unix_getUIDdir"));
2371
[131]2372#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2373 sh_getpwuid_r(uid, &pwd, buffer, sizeof(buffer), &tempres);
2374#else
[1]2375 errno = 0;
2376 tempres = sh_getpwuid(uid);
2377 status = errno;
[131]2378#endif
[1]2379
2380 if (tempres == NULL) {
2381 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
[132]2382 sh_error_message(status, errbuf, sizeof(errbuf)),
[1]2383 _("getpwuid"), (long) uid, _("completely missing"));
2384 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2385 }
2386
2387 if (tempres->pw_dir != NULL) {
[132]2388 sl_strlcpy(out, tempres->pw_dir, len);
2389 SL_RETURN( out, _("sh_unix_getUIDdir"));
[1]2390 } else {
2391 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
[132]2392 sh_error_message(status, errbuf, sizeof(errbuf)),
[1]2393 _("getpwuid"), (long) uid, _("pw_dir"));
2394 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2395 }
2396}
2397
[133]2398SH_MUTEX_STATIC(mutex_getUIDname, PTHREAD_MUTEX_INITIALIZER);
[132]2399
2400char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len)
[1]2401{
2402 struct passwd * tempres;
[131]2403#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2404 struct passwd pwd;
2405 char buffer[SH_PWBUF_SIZE];
2406#endif
[1]2407 int status = 0;
2408 static uid_t old_uid;
2409 static char name[32] = { '\0' };
[132]2410 char errbuf[SH_ERRBUF_SIZE];
[1]2411
2412 SL_ENTER(_("sh_unix_getUIDname"));
2413
2414 if ((uid == old_uid) && (name[0] != '\0')) {
[132]2415 out[0] = '\0';
[133]2416 SH_MUTEX_LOCK_UNSAFE(mutex_getUIDname);
[132]2417 if ((uid == old_uid) && (name[0] != '\0')) {
2418 sl_strlcpy(out, name, len);
2419 }
[133]2420 SH_MUTEX_UNLOCK_UNSAFE(mutex_getUIDname);
[132]2421 if (out[0] != '\0')
2422 SL_RETURN( out, _("sh_unix_getUIDname"));
[1]2423 }
2424
[131]2425#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2426 sh_getpwuid_r(uid, &pwd, buffer, sizeof(buffer), &tempres);
2427#else
[1]2428 errno = 0;
2429 tempres = sh_getpwuid(uid);
2430 status = errno;
[131]2431#endif
[1]2432
2433 if (tempres == NULL) {
2434 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
[132]2435 sh_error_message(status, errbuf, sizeof(errbuf)),
[1]2436 _("getpwuid"), (long) uid, _("completely missing"));
2437 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2438 }
2439
2440
2441 if (tempres->pw_name != NULL) {
[133]2442 SH_MUTEX_LOCK_UNSAFE(mutex_getUIDname);
[1]2443 sl_strlcpy(name, tempres->pw_name, sizeof(name));
2444 old_uid = uid;
[132]2445 sl_strlcpy(out, name, len);
[133]2446 SH_MUTEX_UNLOCK_UNSAFE(mutex_getUIDname);
[132]2447 SL_RETURN( out, _("sh_unix_getUIDname"));
[1]2448 } else {
2449 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
[132]2450 sh_error_message(status, errbuf, sizeof(errbuf)),
[1]2451 _("getpwuid"), (long) uid, _("pw_user"));
2452 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2453 }
2454}
2455
[133]2456SH_MUTEX_STATIC(mutex_getGIDname, PTHREAD_MUTEX_INITIALIZER);
[132]2457
2458char * sh_unix_getGIDname (int level, gid_t gid, char * out, size_t len)
[1]2459{
2460 struct group * tempres;
2461 int status = 0;
2462 static gid_t old_gid;
2463 static char name[32] = { '\0' };
[131]2464#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2465 struct group grp;
2466 char buffer[SH_GRBUF_SIZE];
2467#endif
[132]2468 char errbuf[SH_ERRBUF_SIZE];
[131]2469
[1]2470
2471 SL_ENTER(_("sh_unix_getGIDname"));
2472
2473 if ((gid == old_gid) && (name[0] != '\0')) {
[132]2474 out[0] = '\0';
[133]2475 SH_MUTEX_LOCK_UNSAFE(mutex_getGIDname);
[132]2476 if ((gid == old_gid) && (name[0] != '\0')) {
2477 sl_strlcpy(out, name, len);
2478 }
[133]2479 SH_MUTEX_UNLOCK_UNSAFE(mutex_getGIDname);
[132]2480 if (out[0] != '\0')
2481 SL_RETURN( out, _("sh_unix_getGIDname"));
[1]2482 }
[132]2483
[131]2484#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2485 status = sh_getgrgid_r(gid, &grp, buffer, sizeof(buffer), &tempres);
2486#else
[1]2487 errno = 0;
2488 tempres = sh_getgrgid(gid);
2489 status = errno;
[131]2490#endif
[1]2491
2492 if (tempres == NULL) {
2493 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
[132]2494 sh_error_message(status, errbuf, sizeof(errbuf)),
[1]2495 _("getgrgid"), (long) gid, _("completely missing"));
2496
2497 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2498 }
2499
2500 if (tempres->gr_name != NULL) {
[133]2501 SH_MUTEX_LOCK_UNSAFE(mutex_getGIDname);
[1]2502 sl_strlcpy(name, tempres->gr_name, sizeof(name));
2503 old_gid = gid;
[132]2504 sl_strlcpy(out, name, len);
[133]2505 SH_MUTEX_UNLOCK_UNSAFE(mutex_getGIDname);
[132]2506 SL_RETURN( out, _("sh_unix_getGIDname"));
[1]2507 } else {
2508 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
[132]2509 sh_error_message(status, errbuf, sizeof(errbuf)),
[1]2510 _("getgrgid"), (long) gid, _("gr_name"));
2511 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2512 }
2513}
2514
2515int sh_unix_getUser ()
2516{
2517 char * p;
2518 uid_t seuid, sruid;
[132]2519 char user[USER_MAX];
2520 char dir[SH_PATHBUF];
[1]2521
2522 SL_ENTER(_("sh_unix_getUser"));
2523
2524 seuid = geteuid();
2525
2526 sh.effective.uid = seuid;
2527
[132]2528 p = sh_unix_getUIDdir (SH_ERR_ERR, seuid, dir, sizeof(dir));
[1]2529
2530 if (p == NULL)
2531 SL_RETURN((-1), _("sh_unix_getUser"));
2532 else
2533 {
2534 if (sl_strlen(p) >= SH_PATHBUF) {
2535 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2536 _("getpwuid"), (long) seuid, _("pw_home"));
2537 SL_RETURN((-1), _("sh_unix_getUser"));
2538 } else {
2539 sl_strlcpy ( sh.effective.home, p, SH_PATHBUF);
2540 }
2541 }
2542
2543 sruid = getuid();
2544
2545 sh.real.uid = sruid;
2546
[132]2547 p = sh_unix_getUIDname (SH_ERR_ERR, sruid, user, sizeof(user));
[1]2548 if (p == NULL)
2549 SL_RETURN((-1), _("sh_unix_getUser"));
2550 else
2551 {
2552 if (sl_strlen(p) >= USER_MAX) {
2553 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2554 _("getpwuid"), (long) sruid, _("pw_user"));
2555 SL_RETURN((-1), _("sh_unix_getUser"));
2556 } else {
2557 sl_strlcpy ( sh.real.user, p, USER_MAX);
2558 }
2559 }
2560
[132]2561 p = sh_unix_getUIDdir (SH_ERR_ERR, sruid, dir, sizeof(dir));
[1]2562
2563 if (p == NULL)
2564 SL_RETURN((-1), _("sh_unix_getUser"));
2565 else
2566 {
2567 if (sl_strlen(p) >= SH_PATHBUF) {
2568 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2569 _("getpwuid"), (long) sruid, _("pw_home"));
2570 SL_RETURN((-1), _("sh_unix_getUser"));
2571 } else {
2572 sl_strlcpy ( sh.real.home, p, SH_PATHBUF);
2573 }
2574 }
2575
2576 SL_RETURN((0), _("sh_unix_getUser"));
2577
2578 /* notreached */
2579}
2580
2581
2582int sh_unix_getline (SL_TICKET fd, char * line, int sizeofline)
2583{
2584 register int count;
2585 register int n = 0;
2586 char c;
2587
2588 SL_ENTER(_("sh_unix_getline"));
2589
2590 if (sizeofline < 2) {
[34]2591 line[0] = '\0';
[1]2592 SL_RETURN((0), _("sh_unix_getline"));
2593 }
2594
[34]2595 --sizeofline;
2596
[1]2597 while (n < sizeofline) {
2598
2599 count = sl_read (fd, &c, 1);
2600
2601 /* end of file
2602 */
2603 if (count < 1) {
2604 line[n] = '\0';
2605 n = -1;
2606 break;
2607 }
2608
2609 if (/* c != '\0' && */ c != '\n') {
2610 line[n] = c;
2611 ++n;
2612 } else if (c == '\n') {
2613 if (n > 0) {
2614 line[n] = '\0';
2615 break;
2616 } else {
2617 line[n] = '\n'; /* get newline only if only char on line */
2618 ++n;
2619 line[n] = '\0';
2620 break;
2621 }
2622 } else {
2623 line[n] = '\0';
2624 break;
2625 }
2626
2627 }
2628
2629
2630 line[sizeofline] = '\0'; /* make sure line is terminated */
2631 SL_RETURN((n), _("sh_unix_getline"));
2632}
2633
2634
2635#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
2636
2637/**************************************************************
2638 *
2639 * --- FILE INFO ---
2640 *
2641 **************************************************************/
2642
[10]2643#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
[1]2644
[10]2645#if defined(__linux__)
[1]2646
2647/* --- Determine ext2fs file attributes. ---
2648 */
2649#include <sys/ioctl.h>
2650#if defined(HAVE_EXT2FS_EXT2_FS_H)
2651#include <ext2fs/ext2_fs.h>
2652#else
2653#include <linux/ext2_fs.h>
2654#endif
2655
[10]2656/* __linux__ includes */
2657#endif
2658
[1]2659static
2660int sh_unix_getinfo_attr (char * name,
2661 unsigned long * flags,
2662 char * c_attr,
[10]2663 int fd, struct stat * buf)
[1]2664{
2665
2666/* TAKEN FROM:
2667 *
2668 * lsattr.c - List file attributes on an ext2 file system
2669 *
2670 * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
2671 * Laboratoire MASI, Institut Blaise Pascal
2672 * Universite Pierre et Marie Curie (Paris VI)
2673 *
2674 * This file can be redistributed under the terms of the GNU General
2675 * Public License
2676 */
2677
2678#ifdef HAVE_STAT_FLAGS
2679
2680 SL_ENTER(_("sh_unix_getinfo_attr"));
2681
2682 *flags = 0;
2683
[10]2684 /* cast to void to avoid compiler warning about unused parameters */
2685 (void) fd;
2686 (void) name;
[1]2687
[10]2688#ifdef UF_NODUMP
2689 if (buf->st_flags & UF_NODUMP) {
2690 *flags |= UF_NODUMP;
2691 c_attr[0] = 'd';
2692 }
2693#endif
[1]2694#ifdef UF_IMMUTABLE
[10]2695 if (buf->st_flags & UF_IMMUTABLE) {
2696 *flags |= UF_IMMUTABLE;
2697 c_attr[1] = 'i';
2698 }
[1]2699#endif
2700#ifdef UF_APPEND
[10]2701 if (buf->st_flags & UF_APPEND) {
2702 *flags |= UF_APPEND;
2703 c_attr[2] = 'a';
2704 }
[1]2705#endif
[10]2706#ifdef UF_NOUNLINK
2707 if (buf->st_flags & UF_NOUNLINK) {
2708 *flags |= UF_NOUNLINK;
2709 c_attr[3] = 'u';
2710 }
[1]2711#endif
[10]2712#ifdef UF_OPAQUE
2713 if (buf->st_flags & UF_OPAQUE) {
2714 *flags |= UF_OPAQUE;
2715 c_attr[4] = 'o';
2716 }
2717#endif
2718#ifdef SF_ARCHIVED
2719 if (buf->st_flags & SF_ARCHIVED) {
2720 *flags |= SF_ARCHIVED;
2721 c_attr[5] = 'R';
2722 }
2723
2724#endif
2725#ifdef SF_IMMUTABLE
2726 if (buf->st_flags & SF_IMMUTABLE) {
2727 *flags |= SF_IMMUTABLE;
2728 c_attr[6] = 'I';
2729 }
2730#endif
2731#ifdef SF_APPEND
2732 if (buf->st_flags & SF_APPEND) {
2733 *flags |= SF_APPEND;
2734 c_attr[7] = 'A';
2735 }
2736#endif
2737#ifdef SF_NOUNLINK
2738 if (buf->st_flags & SF_NOUNLINK) {
2739 *flags |= SF_NOUNLINK;
2740 c_attr[8] = 'U';
2741 }
2742#endif
[1]2743
[10]2744 /* ! HAVE_STAT_FLAGS */
[1]2745#else
2746
2747#ifdef HAVE_EXT2_IOCTLS
2748 int /* fd, */ r, f;
2749
2750 SL_ENTER(_("sh_unix_getinfo_attr"));
2751
2752 *flags = 0;
[10]2753 (void) buf;
[1]2754
2755 /* open() -> aud_open() R.Wichmann
2756 fd = aud_open (FIL__, __LINE__, SL_YESPRIV, name, O_RDONLY|O_NONBLOCK, 0);
2757 */
2758
2759 if (fd == -1 || name == NULL)
2760 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
2761
2762
2763 r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
2764 /* close (fd); */
2765
2766 if (r == -1)
2767 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
2768
[10]2769 if (f == 0)
2770 SL_RETURN(0, _("sh_unix_getinfo_attr"));
2771
[1]2772 *flags = f;
2773
2774/* ! HAVE_EXT2_IOCTLS */
2775#else
2776
2777 SL_ENTER(_("sh_unix_getinfo_attr"));
2778
2779 *flags = 0; /* modified by R.Wichmann */
2780
2781/* ! HAVE_EXT2_IOCTLS */
2782#endif
2783/*
2784 * END
2785 *
2786 * lsattr.c - List file attributes on an ext2 file system
2787 */
2788
[10]2789 if (*flags == 0)
2790 goto theend;
2791
[1]2792#ifdef EXT2_SECRM_FL
2793 if ( (*flags & EXT2_SECRM_FL) != 0 ) c_attr[0] = 's';
2794#endif
2795#ifdef EXT2_UNRM_FL
2796 if ( (*flags & EXT2_UNRM_FL) != 0 ) c_attr[1] = 'u';
2797#endif
2798#ifdef EXT2_SYNC_FL
2799 if ( (*flags & EXT2_SYNC_FL) != 0 ) c_attr[2] = 'S';
2800#endif
2801#ifdef EXT2_IMMUTABLE_FL
2802 if ( (*flags & EXT2_IMMUTABLE_FL) != 0) c_attr[3] = 'i';
2803#endif
2804#ifdef EXT2_APPEND_FL
2805 if ( (*flags & EXT2_APPEND_FL) != 0 ) c_attr[4] = 'a';
2806#endif
2807#ifdef EXT2_NODUMP_FL
2808 if ( (*flags & EXT2_NODUMP_FL) != 0 ) c_attr[5] = 'd';
2809#endif
2810#ifdef EXT2_NOATIME_FL
2811 if ( (*flags & EXT2_NOATIME_FL) != 0) c_attr[6] = 'A';
2812#endif
2813#ifdef EXT2_COMPR_FL
2814 if ( (*flags & EXT2_COMPR_FL) != 0 ) c_attr[7] = 'c';
2815#endif
[10]2816
2817#ifdef EXT2_TOPDIR_FL
2818 if ( (*flags & EXT2_TOPDIR_FL) != 0 ) c_attr[8] = 'T';
[1]2819#endif
[10]2820#ifdef EXT2_DIRSYNC_FL
2821 if ( (*flags & EXT2_DIRSYNC_FL) != 0 ) c_attr[9] = 'D';
[1]2822#endif
[10]2823#ifdef EXT2_NOTAIL_FL
2824 if ( (*flags & EXT2_NOTAIL_FL) != 0 ) c_attr[10] = 't';
[1]2825#endif
[10]2826#ifdef EXT2_JOURNAL_DATA_FL
2827 if ( (*flags & EXT2_JOURNAL_DATA_FL) != 0) c_attr[11] = 'j';
[1]2828#endif
2829
[10]2830 theend:
2831 /* ext2 */
2832#endif
2833
[1]2834 c_attr[12] = '\0';
2835
2836 SL_RETURN(0, _("sh_unix_getinfo_attr"));
2837}
2838#else
2839static
2840int sh_unix_getinfo_attr (char * name,
2841 unsigned long * flags,
2842 char * c_attr,
[10]2843 int fd, struct stat * buf)
[1]2844{
2845 return 0;
2846}
2847
[10]2848/* defined(__linux__) || defined(HAVE_STAT_FLAGS) */
[1]2849#endif
2850
2851/* determine file type
2852 */
2853static
2854int sh_unix_getinfo_type (struct stat * buf,
2855 ShFileType * type,
2856 char * c_mode)
2857{
2858 SL_ENTER(_("sh_unix_getinfo_type"));
2859
2860 if ( S_ISREG(buf->st_mode) ) {
2861 (*type) = SH_FILE_REGULAR;
2862 c_mode[0] = '-';
2863 }
2864 else if ( S_ISLNK(buf->st_mode) ) {
2865 (*type) = SH_FILE_SYMLINK;
2866 c_mode[0] = 'l';
2867 }
2868 else if ( S_ISDIR(buf->st_mode) ) {
2869 (*type) = SH_FILE_DIRECTORY;
2870 c_mode[0] = 'd';
2871 }
2872 else if ( S_ISCHR(buf->st_mode) ) {
2873 (*type) = SH_FILE_CDEV;
2874 c_mode[0] = 'c';
2875 }
2876 else if ( S_ISBLK(buf->st_mode) ) {
2877 (*type) = SH_FILE_BDEV;
2878 c_mode[0] = 'b';
2879 }
2880 else if ( S_ISFIFO(buf->st_mode) ) {
2881 (*type) = SH_FILE_FIFO;
2882 c_mode[0] = '|';
2883 }
2884 else if ( S_ISSOCK(buf->st_mode) ) {
2885 (*type) = SH_FILE_SOCKET;
2886 c_mode[0] = 's';
2887 }
[40]2888 else if ( S_ISDOOR(buf->st_mode) ) {
2889 (*type) = SH_FILE_DOOR;
2890 c_mode[0] = 'D';
2891 }
2892 else if ( S_ISPORT(buf->st_mode) ) {
2893 (*type) = SH_FILE_PORT;
2894 c_mode[0] = 'P';
2895 }
[1]2896 else {
2897 (*type) = SH_FILE_UNKNOWN;
2898 c_mode[0] = '?';
2899 }
2900
2901 SL_RETURN(0, _("sh_unix_getinfo_type"));
2902}
2903
2904int sh_unix_get_ftype(char * fullpath)
2905{
[149]2906 char c_mode[CMODE_SIZE];
[1]2907 struct stat buf;
2908 ShFileType type;
2909 int res;
2910
2911 SL_ENTER(_("sh_unix_get_ftype"));
2912
2913 res = retry_lstat(FIL__, __LINE__, fullpath, &buf);
2914
2915 if (res < 0)
2916 SL_RETURN(SH_FILE_UNKNOWN, _("sh_unix_getinfo_type"));
2917
2918 sh_unix_getinfo_type (&buf, &type, c_mode);
2919
2920 SL_RETURN(type, _("sh_unix_get_ftype"));
2921}
2922
2923
2924static
2925int sh_unix_getinfo_mode (struct stat *buf,
2926 unsigned int * mode,
2927 char * c_mode)
2928{
2929
2930 SL_ENTER(_("sh_unix_getinfo_mode"));
2931
2932 (*mode) = buf->st_mode;
2933
2934 /* make 'ls'-like string */
2935
2936 if ( (buf->st_mode & S_IRUSR) != 0 ) c_mode[1] = 'r';
2937 if ( (buf->st_mode & S_IWUSR) != 0 ) c_mode[2] = 'w';
2938 if ( (buf->st_mode & S_IXUSR) != 0 ) {
2939 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 's';
2940 else c_mode[3] = 'x';
2941 } else {
2942 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 'S';
2943 }
2944
2945 if ( (buf->st_mode & S_IRGRP) != 0 ) c_mode[4] = 'r';
2946 if ( (buf->st_mode & S_IWGRP) != 0 ) c_mode[5] = 'w';
2947 if ( (buf->st_mode & S_IXGRP) != 0 ) {
2948 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 's';
2949 else c_mode[6] = 'x';
2950 } else {
2951 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 'S';
2952 }
2953
2954 if ( (buf->st_mode & S_IROTH) != 0 ) c_mode[7] = 'r';
2955 if ( (buf->st_mode & S_IWOTH) != 0 ) c_mode[8] = 'w';
2956#ifdef S_ISVTX /* not POSIX */
2957 if ( (buf->st_mode & S_IXOTH) != 0 ) {
2958 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 't';
2959 else c_mode[9] = 'x';
2960 } else {
2961 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 'T';
2962 }
2963#else
2964 if ( (buf->st_mode & S_IXOTH) != 0 ) c_mode[9] = 'x';
2965#endif
2966
2967 SL_RETURN(0, _("sh_unix_getinfo_mode"));
2968}
2969
2970
2971long IO_Limit = 0;
2972
2973void sh_unix_io_pause ()
2974{
2975 long runtime;
2976 float someval;
2977 unsigned long sometime;
2978
2979 if (IO_Limit == 0)
2980 {
2981 return;
2982 }
2983 else
2984 {
2985 runtime = (long) (time(NULL) - sh.statistics.time_start);
2986
2987 if (runtime > 0 && (long)(sh.statistics.bytes_hashed/runtime) > IO_Limit)
2988 {
2989 someval = sh.statistics.bytes_hashed - (IO_Limit * runtime);
2990 someval /= (float) IO_Limit;
2991 if (someval < 1.0)
2992 {
2993 someval *= 1000; /* milliseconds in a second */
2994 sometime = (unsigned long) someval;
2995 /* fprintf(stderr, "FIXME PAUSE %ld\n", sometime); */
2996 retry_msleep(0, sometime);
2997 }
2998 else
2999 {
3000 sometime = (unsigned long) someval;
3001 /* fprintf(stderr, "FIXME PAUSE %ld sec\n", sometime); */
3002 retry_msleep (sometime, 0);
3003 }
3004 }
3005 }
3006 return;
3007}
3008
[22]3009int sh_unix_set_io_limit (const char * c)
[1]3010{
3011 long val;
3012
3013 SL_ENTER(_("sh_unix_set_io_limit"));
3014
3015 val = strtol (c, (char **)NULL, 10);
3016 if (val < 0)
3017 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
3018 _("set I/O limit"), c);
3019
3020 val = (val < 0 ? 0 : val);
3021
3022 IO_Limit = val * 1024;
3023 SL_RETURN( 0, _("sh_unix_set_io_limit"));
3024}
3025
3026/* obtain file info
3027 */
3028extern int flag_err_debug;
3029
3030#include "sh_ignore.h"
3031
[19]3032int sh_unix_checksum_size (char * filename, struct stat * fbuf,
[133]3033 char * fileHash, int alert_timeout, SL_TICKET fd)
[19]3034{
3035 file_type tmpFile;
3036 int status;
3037
3038 SL_ENTER(_("sh_unix_checksum_size"));
3039
[59]3040 if (sh.flag.checkSum != SH_CHECK_INIT)
3041 {
3042 /* lookup file in database */
3043 status = sh_hash_get_it (filename, &tmpFile);
3044 if (status != 0) {
3045 goto out;
3046 }
3047 }
3048 else
3049 {
3050 tmpFile.size = fbuf->st_size;
3051 }
[19]3052
3053 /* if last < current get checksum */
3054 if (tmpFile.size < fbuf->st_size)
3055 {
[133]3056 char hashbuf[KEYBUF_SIZE];
[153]3057 UINT64 local_length = (UINT64) (tmpFile.size < 0 ? 0 : tmpFile.size);
[22]3058 sl_strlcpy(fileHash,
[153]3059 sh_tiger_generic_hash (filename, fd, &(local_length),
[133]3060 alert_timeout, hashbuf, sizeof(hashbuf)),
[59]3061 KEY_LEN+1);
[68]3062
[107]3063 /* return */
[167]3064 if (tmpFile.link_path) SH_FREE(tmpFile.link_path);
[19]3065 SL_RETURN( 0, _("sh_unix_checksum_size"));
3066 }
3067
3068 out:
[167]3069 if (tmpFile.link_path) SH_FREE(tmpFile.link_path);
[93]3070 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
[19]3071 SL_RETURN( -1, _("sh_unix_checksum_size"));
3072}
3073
[68]3074int sh_unix_check_selinux = S_FALSE;
3075int sh_unix_check_acl = S_FALSE;
3076
3077#ifdef USE_ACL
3078
3079#include <sys/acl.h>
3080static char * sh_unix_getinfo_acl (char * path, int fd, struct stat * buf)
3081{
3082 /* system.posix_acl_access, system.posix_acl_default
3083 */
3084 char * out = NULL;
3085 char * collect = NULL;
3086 char * tmp;
3087 char * out_compact;
3088 ssize_t len;
3089 acl_t result;
3090
3091 SL_ENTER(_("sh_unix_getinfo_acl"));
3092
3093 result = (fd == -1) ?
3094 acl_get_file (path, ACL_TYPE_ACCESS) :
3095 acl_get_fd (fd);
3096
3097 if (result)
3098 {
3099 out = acl_to_text (result, &len);
3100 if (out && (len > 0)) {
3101 out_compact = sh_util_acl_compact (out, len);
3102 acl_free(out);
3103 if (out_compact)
3104 {
3105 collect = sh_util_strconcat (_("acl_access:"), out_compact, NULL);
3106 SH_FREE(out_compact);
3107 }
3108 }
3109 acl_free(result);
3110 }
3111
3112
3113 if ( S_ISDIR(buf->st_mode) )
3114 {
3115 result = acl_get_file (path, ACL_TYPE_DEFAULT);
3116
3117 if (result)
3118 {
3119 out = acl_to_text (result, &len);
3120 if (out && (len > 0)) {
3121 out_compact = sh_util_acl_compact (out, len);
3122 acl_free(out);
3123 if (out_compact) {
3124 if (collect) {
3125 tmp = sh_util_strconcat (_("acl_default:"),
3126 out_compact, ":", collect, NULL);
3127 SH_FREE(collect);
3128 }
3129 else {
3130 tmp = sh_util_strconcat (_("acl_default:"), out_compact, NULL);
3131 }
3132 SH_FREE(out_compact);
3133 collect = tmp;
3134 }
3135 }
3136 acl_free(result);
3137 }
3138 }
3139
3140 SL_RETURN((collect),_("sh_unix_getinfo_acl"));
3141}
3142#endif
3143
3144#ifdef USE_XATTR
3145
3146#include <attr/xattr.h>
3147static char * sh_unix_getinfo_xattr_int (char * path, int fd, char * name)
3148{
3149 char * out = NULL;
3150 char * tmp = NULL;
3151 size_t size = 256;
3152 ssize_t result;
3153
3154 SL_ENTER(_("sh_unix_getinfo_xattr_int"));
3155
3156 out = SH_ALLOC(size);
3157
3158 result = (fd == -1) ?
3159 lgetxattr (path, name, out, size-1) :
3160 fgetxattr (fd, name, out, size-1);
3161
3162 if (result == -1 && errno == ERANGE)
3163 {
3164 SH_FREE(out);
3165 result = (fd == -1) ?
3166 lgetxattr (path, name, NULL, 0) :
3167 fgetxattr (fd, name, NULL, 0);
3168 size = result + 1;
3169 out = SH_ALLOC(size);
3170 result = (fd == -1) ?
3171 lgetxattr (path, name, out, size-1) :
3172 fgetxattr (fd, name, out, size-1);
3173 }
3174
3175 if ((result > 0) && ((size_t)result < size))
3176 {
3177 out[size-1] = '\0';
3178 tmp = out;
3179 }
3180 else
3181 {
3182 SH_FREE(out);
3183 }
3184
3185 SL_RETURN((tmp),_("sh_unix_getinfo_xattr_int"));
3186}
3187
3188
3189static char * sh_unix_getinfo_xattr (char * path, int fd, struct stat * buf)
3190{
3191 /* system.posix_acl_access, system.posix_acl_default, security.selinux
3192 */
3193 char * tmp;
3194 char * out = NULL;
3195 char * collect = NULL;
3196
3197 SL_ENTER(_("sh_unix_getinfo_xattr"));
3198
3199#ifdef USE_ACL
3200 /*
3201 * we need the acl_get_fd/acl_get_file functions, getxattr will only
3202 * yield the raw bytes
3203 */
3204 if (sh_unix_check_acl == S_TRUE)
3205 {
3206 out = sh_unix_getinfo_acl(path, fd, buf);
3207
3208 if (out)
3209 {
3210 collect = out;
3211 }
3212 }
3213#endif
3214
[105]3215 if (sh_unix_check_selinux == S_TRUE)
3216 {
3217 out = sh_unix_getinfo_xattr_int(path, fd, _("security.selinux"));
[68]3218
[105]3219 if (out)
3220 {
3221 if (collect) {
3222 tmp = sh_util_strconcat(_("selinux:"), out, ":", collect, NULL);
3223 SH_FREE(collect);
3224 }
3225 else {
3226 tmp = sh_util_strconcat(_("selinux:"), out, NULL);
3227 }
3228 SH_FREE(out);
3229 collect = tmp;
3230 }
[68]3231 }
3232
3233 SL_RETURN((collect),_("sh_unix_getinfo_xattr"));
3234}
3235#endif
3236
3237#ifdef USE_XATTR
3238int sh_unix_setcheckselinux (const char * c)
3239{
3240 int i;
3241 SL_ENTER(_("sh_unix_setcheckselinux"));
3242 i = sh_util_flagval(c, &(sh_unix_check_selinux));
3243
3244 SL_RETURN(i, _("sh_unix_setcheckselinux"));
3245}
3246#endif
3247
3248#ifdef USE_ACL
3249int sh_unix_setcheckacl (const char * c)
3250{
3251 int i;
3252 SL_ENTER(_("sh_unix_setcheckacl"));
3253 i = sh_util_flagval(c, &(sh_unix_check_acl));
3254
3255 SL_RETURN(i, _("sh_unix_setcheckacl"));
3256}
3257#endif
3258
3259
[1]3260int sh_unix_getinfo (int level, char * filename, file_type * theFile,
3261 char * fileHash, int policy)
3262{
3263 char timestr[81];
3264 long runtim;
3265 struct stat buf;
3266 struct stat lbuf;
3267 struct stat fbuf;
3268 int stat_return;
[8]3269
[1]3270 ShFileType type;
3271 unsigned int mode;
3272 char * tmp;
3273 char * tmp2;
[8]3274
[1]3275 char * linknamebuf;
3276 int linksize;
3277
3278 extern int get_the_fd (SL_TICKET ticket);
3279
3280 SL_TICKET rval_open;
3281 int fd;
3282 int fstat_return;
[167]3283 sh_string * content = NULL;
3284
[1]3285 time_t tend;
3286 time_t tstart;
3287
3288
3289 char * path = NULL;
3290
3291 int alert_timeout = 120;
3292
3293 path = theFile->fullpath;
3294
3295 SL_ENTER(_("sh_unix_getinfo"));
3296
3297 /* --- Stat the file, and get checksum. ---
3298 */
3299 tstart = time(NULL);
[8]3300
[1]3301 stat_return = retry_lstat (FIL__, __LINE__,
3302 path /* theFile->fullpath */, &buf);
3303
[8]3304 fd = -1;
3305 fstat_return = -1;
3306 rval_open = -1;
3307
[167]3308 theFile->link_path = NULL;
3309
[1]3310 if (stat_return == 0 && S_ISREG(buf.st_mode))
3311 {
3312 rval_open = sl_open_fastread (path /* theFile->fullpath */, SL_YESPRIV);
3313
3314 alert_timeout = 120; /* this is per 8K block now ! */
3315
[8]3316 if (path[1] == 'p' && path[5] == '/' && path[2] == 'r' &&
3317 path[3] == 'o' && path[4] == 'c' && path[0] == '/')
[1]3318 {
3319 /* seven is magic */
3320 alert_timeout = 7;
3321 }
[8]3322
3323 fd = get_the_fd(rval_open);
[1]3324 }
3325
3326 tend = time(NULL);
3327
3328 /* An unprivileged user may slow lstat/open to a crawl
3329 * with clever path/symlink setup
3330 */
3331 if ((tend - tstart) > (time_t) /* 60 */ 6)
3332 {
3333 tmp2 = sh_util_safe_name (theFile->fullpath);
3334 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_TOOLATE,
3335 (long)(tend - tstart), tmp2);
3336 SH_FREE(tmp2);
3337 }
[8]3338
[1]3339 if (fd >= 0)
[8]3340 fstat_return = retry_fstat (FIL__, __LINE__, fd, &fbuf);
[1]3341 else
[8]3342 fd = -1;
3343
[1]3344
3345 /* --- case 1: lstat failed ---
3346 */
3347 if (stat_return != 0)
3348 {
3349 stat_return = errno;
3350 if (!SL_ISERROR(rval_open))
3351 sl_close(rval_open);
3352 if (sh.flag.checkSum == SH_CHECK_INIT ||
3353 (sh_hash_have_it (theFile->fullpath) >= 0 &&
[114]3354 (!SH_FFLAG_REPORTED_SET(theFile->file_reported))))
[1]3355 {
3356 if (S_FALSE == sh_ignore_chk_del(theFile->fullpath)) {
[132]3357 char errbuf[SH_ERRBUF_SIZE];
[1]3358 tmp2 = sh_util_safe_name (theFile->fullpath);
3359 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_LSTAT,
[132]3360 sh_error_message (stat_return, errbuf, sizeof(errbuf)),
3361 tmp2);
[1]3362 SH_FREE(tmp2);
3363 }
3364 }
3365 SL_RETURN((-1),_("sh_unix_getinfo"));
3366 }
3367
[8]3368 /* --- case 2: not a regular file ---
[1]3369 */
3370 else if (! S_ISREG(buf.st_mode))
3371 {
3372 if (fileHash != NULL)
[93]3373 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
[1]3374 }
3375
3376 /* --- case 3a: a regular file, fstat ok ---
3377 */
3378 else if (fstat_return == 0 &&
3379 buf.st_mode == fbuf.st_mode &&
3380 buf.st_ino == fbuf.st_ino &&
3381 buf.st_uid == fbuf.st_uid &&
3382 buf.st_gid == fbuf.st_gid &&
3383 buf.st_dev == fbuf.st_dev )
3384 {
3385 if (fileHash != NULL)
3386 {
3387 if ((theFile->check_mask & MODI_CHK) == 0)
3388 {
[93]3389 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
[1]3390 }
[19]3391 else if ((theFile->check_mask & MODI_PREL) != 0 &&
[1]3392 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
[102]3393 alert_timeout, theFile->fullpath))
[1]3394 {
3395 if (0 != sh_prelink_run (theFile->fullpath,
3396 fileHash, alert_timeout))
[93]3397 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
[1]3398 }
3399 else
3400 {
[133]3401 char hashbuf[KEYBUF_SIZE];
[151]3402 UINT64 length_nolim = TIGER_NOLIM;
[167]3403
3404 if ((theFile->check_mask & MODI_TXT) != 0 && fbuf.st_size < SH_TXT_MAX)
3405 {
3406 sl_init_content (rval_open, fbuf.st_size);
3407 }
3408
[22]3409 sl_strlcpy(fileHash,
3410 sh_tiger_generic_hash (theFile->fullpath,
[151]3411 rval_open, &length_nolim,
[133]3412 alert_timeout,
3413 hashbuf, sizeof(hashbuf)),
[22]3414 KEY_LEN+1);
[167]3415
3416 content = sl_get_content(rval_open);
3417
[19]3418 if ((theFile->check_mask & MODI_SGROW) != 0)
3419 {
[151]3420 fbuf.st_size = (off_t) length_nolim;
3421 buf.st_size = fbuf.st_size;
[19]3422 sl_rewind(rval_open);
3423 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3424 &fileHash[KEY_LEN + 1],
[133]3425 alert_timeout, rval_open);
[19]3426 }
[1]3427 }
3428 }
3429 }
3430
3431 /* --- case 3b: a regular file, fstat ok, but different ---
3432 */
3433 else if (fstat_return == 0 && S_ISREG(fbuf.st_mode))
3434 {
3435 memcpy (&buf, &fbuf, sizeof( struct stat ));
3436
3437 if (fileHash != NULL)
3438 {
3439 if ((theFile->check_mask & MODI_CHK) == 0)
3440 {
[93]3441 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
[1]3442 }
3443 else if (policy == SH_LEVEL_PRELINK &&
3444 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
[102]3445 alert_timeout, theFile->fullpath))
[1]3446 {
3447 if (0 != sh_prelink_run (theFile->fullpath,
3448 fileHash, alert_timeout))
[93]3449 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
[1]3450 }
3451 else
3452 {
[133]3453 char hashbuf[KEYBUF_SIZE];
[151]3454 UINT64 length_nolim = TIGER_NOLIM;
[167]3455
3456 if ((theFile->check_mask & MODI_TXT) != 0 && fbuf.st_size < SH_TXT_MAX)
3457 {
3458 sl_init_content (rval_open, fbuf.st_size);
3459 }
3460
[1]3461 sl_strlcpy(fileHash,
[133]3462 sh_tiger_generic_hash (theFile->fullpath, rval_open,
[151]3463 &length_nolim,
[133]3464 alert_timeout,
3465 hashbuf, sizeof(hashbuf)),
[1]3466 KEY_LEN + 1);
[167]3467
3468 content = sl_get_content(rval_open);
3469
[19]3470 if ((theFile->check_mask & MODI_SGROW) != 0)
3471 {
[151]3472 fbuf.st_size = (off_t) length_nolim;
3473 buf.st_size = fbuf.st_size;
[19]3474 sl_rewind(rval_open);
3475 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3476 &fileHash[KEY_LEN + 1],
[133]3477 alert_timeout, rval_open);
[19]3478 }
[1]3479 }
3480 }
3481 }
3482
3483 /* --- case 4: a regular file, fstat failed ---
3484 */
3485
3486 else /* fstat_return != 0 or !S_ISREG(fbuf->st_mode) */
3487 {
3488 fstat_return = errno;
3489 if (fileHash != NULL)
[93]3490 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
[1]3491
[65]3492 if ((theFile->check_mask & MODI_CHK) != 0)
3493 {
3494 tmp2 = sh_util_safe_name (theFile->fullpath);
3495 sh_error_handle (level, FIL__, __LINE__, fstat_return, MSG_E_READ,
3496 tmp2);
3497 SH_FREE(tmp2);
3498 }
[1]3499 }
3500
3501
3502 /* --- Determine file type. ---
3503 */
[149]3504 memset (theFile->c_mode, '-', CMODE_SIZE-1);
3505 theFile->c_mode[CMODE_SIZE-1] = '\0';
[8]3506
[149]3507 memset (theFile->link_c_mode, '-', CMODE_SIZE-1);
3508 theFile->link_c_mode[CMODE_SIZE-1] = '\0';
[1]3509
3510 sh_unix_getinfo_type (&buf, &type, theFile->c_mode);
3511 theFile->type = type;
3512
[10]3513#if defined(__linux__) || defined(HAVE_STAT_FLAGS)
[1]3514
3515 /* --- Determine file attributes. ---
3516 */
[149]3517 memset (theFile->c_attributes, '-', ATTRBUF_SIZE);
3518 theFile->c_attributes[ATTRBUF_USED] = '\0';
[1]3519 theFile->attributes = 0;
3520
3521 if (theFile->c_mode[0] != 'c' && theFile->c_mode[0] != 'b' &&
3522 theFile->c_mode[0] != 'l' )
3523 sh_unix_getinfo_attr(theFile->fullpath,
[10]3524 &theFile->attributes, theFile->c_attributes,
3525 fd, &buf);
[1]3526#endif
3527
[105]3528#if defined(USE_XATTR) && defined(USE_ACL)
3529 if (sh_unix_check_selinux == S_TRUE || sh_unix_check_acl == S_TRUE)
3530 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3531#elif defined(USE_XATTR)
[68]3532 if (sh_unix_check_selinux == S_TRUE)
3533 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3534#elif defined(USE_ACL)
3535 if (sh_unix_check_acl == S_TRUE)
3536 theFile->attr_string = sh_unix_getinfo_acl (theFile->fullpath, fd, &buf);
3537#else
3538 theFile->attr_string = NULL;
3539#endif
3540
[1]3541 if (!SL_ISERROR(rval_open))
3542 sl_close(rval_open);
3543
3544
3545 /* --- I/O limit. ---
3546 */
3547 if (IO_Limit > 0)
3548 {
3549 runtim = (long) (time(NULL) - sh.statistics.time_start);
3550
3551 if (runtim > 0 && (long)(sh.statistics.bytes_hashed/runtim) > IO_Limit)
3552 retry_msleep(1, 0);
3553 }
3554
3555 /* --- Determine permissions. ---
3556 */
3557 sh_unix_getinfo_mode (&buf, &mode, theFile->c_mode);
3558
3559 /* --- Trivia. ---
3560 */
3561 theFile->dev = buf.st_dev;
3562 theFile->ino = buf.st_ino;
3563 theFile->mode = buf.st_mode;
3564 theFile->hardlinks = buf.st_nlink;
3565 theFile->owner = buf.st_uid;
3566 theFile->group = buf.st_gid;
3567 theFile->rdev = buf.st_rdev;
3568 theFile->size = buf.st_size;
3569 theFile->blksize = (unsigned long) buf.st_blksize;
3570 theFile->blocks = (unsigned long) buf.st_blocks;
3571 theFile->atime = buf.st_atime;
3572 theFile->mtime = buf.st_mtime;
3573 theFile->ctime = buf.st_ctime;
3574
3575
3576 /* --- Owner and group. ---
3577 */
3578
[132]3579 if (NULL == sh_unix_getGIDname(SH_ERR_ALL, buf.st_gid, theFile->c_group, GROUP_MAX+1)) {
[1]3580
3581 tmp2 = sh_util_safe_name (theFile->fullpath);
3582
3583 if (policy == SH_LEVEL_ALLIGNORE)
3584 {
3585 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
3586 MSG_FI_NOGRP,
3587 (long) buf.st_gid, tmp2);
3588 }
3589 else
3590 {
3591 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
3592 MSG_FI_NOGRP,
3593 (long) buf.st_gid, tmp2);
3594 }
3595 SH_FREE(tmp2);
3596 sl_snprintf(theFile->c_group, GROUP_MAX+1, "%d", (long) buf.st_gid);
3597 }
3598
3599
[137]3600 if (NULL == sh_unix_getUIDname(SH_ERR_ALL, buf.st_uid, theFile->c_owner, USER_MAX+1)) {
[1]3601
3602 tmp2 = sh_util_safe_name (theFile->fullpath);
3603
3604 if (policy == SH_LEVEL_ALLIGNORE)
3605 {
3606 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
3607 MSG_FI_NOUSR,
3608 (long) buf.st_uid, tmp2);
3609 }
3610 else
3611 {
3612 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
3613 MSG_FI_NOUSR,
3614 (long) buf.st_uid, tmp2);
3615 }
3616 SH_FREE(tmp2);
3617 sl_snprintf(theFile->c_owner, USER_MAX+1, "%d", (long) buf.st_uid);
3618 }
3619
3620 /* --- Output the file. ---
3621 */
3622 if (flag_err_debug == SL_TRUE)
3623 {
3624 tmp2 = sh_util_safe_name ((filename == NULL) ?
3625 theFile->fullpath : filename);
[137]3626 (void) sh_unix_time(theFile->mtime, timestr, sizeof(timestr));
[1]3627 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LIST,
3628 theFile->c_mode,
3629 theFile->hardlinks,
3630 theFile->c_owner,
3631 theFile->c_group,
3632 (unsigned long) theFile->size,
3633 timestr,
3634 tmp2);
3635 SH_FREE(tmp2);
3636 }
3637
3638 /* --- Check for links. ---
3639 */
3640 if (theFile->c_mode[0] == 'l')
3641 {
3642 linknamebuf = SH_ALLOC(PATH_MAX);
3643
[22]3644 /* flawfinder: ignore */
[1]3645 linksize = readlink (theFile->fullpath, linknamebuf, PATH_MAX-1);
3646
3647 if (linksize < (PATH_MAX-1) && linksize >= 0)
3648 linknamebuf[linksize] = '\0';
3649 else
3650 linknamebuf[PATH_MAX-1] = '\0';
3651
3652 if (linksize < 0)
3653 {
[132]3654 char errbuf[SH_ERRBUF_SIZE];
[1]3655 linksize = errno;
3656 tmp2 = sh_util_safe_name (theFile->fullpath);
3657 sh_error_handle (level, FIL__, __LINE__, linksize, MSG_FI_RDLNK,
[132]3658 sh_error_message (linksize, errbuf, sizeof(errbuf)), tmp2);
[1]3659 SH_FREE(tmp2);
3660 SH_FREE(linknamebuf);
[167]3661 theFile->link_path = sh_util_strdup("-");
[1]3662 SL_RETURN((-1),_("sh_unix_getinfo"));
3663 }
[138]3664
[167]3665 if (linknamebuf[0] == '/')
3666 {
3667 theFile->link_path = sh_util_strdup (linknamebuf);
3668 }
3669 else
3670 {
3671 tmp = sh_util_dirname(theFile->fullpath);
3672 if (tmp) {
3673 theFile->link_path = SH_ALLOC(PATH_MAX);
3674 sl_strlcpy (theFile->link_path, tmp, PATH_MAX);
3675 SH_FREE(tmp);
3676 } else {
3677 theFile->link_path = SH_ALLOC(PATH_MAX);
3678 theFile->link_path[0] = '\0';
3679 }
3680 /*
3681 * Only attach '/' if not root directory. Handle "//", which
3682 * according to POSIX is implementation-defined, and may be
3683 * different from "/" (however, three or more '/' will collapse
3684 * to one).
3685 */
3686 tmp = theFile->link_path; while (*tmp == '/') ++tmp;
3687 if (*tmp != '\0')
3688 {
3689 sl_strlcat (theFile->link_path, "/", PATH_MAX);
3690 }
3691 sl_strlcat (theFile->link_path, linknamebuf, PATH_MAX);
3692 }
3693
3694 /* stat the link
3695 */
3696 stat_return = retry_lstat (FIL__, __LINE__, theFile->link_path, &lbuf);
3697
3698 /* check for error
3699 */
3700 if (stat_return != 0)
3701 {
3702 stat_return = errno;
3703 tmp = sh_util_safe_name (theFile->fullpath);
3704 tmp2 = sh_util_safe_name (theFile->link_path);
3705 if (stat_return != ENOENT)
3706 {
3707 char errbuf[SH_ERRBUF_SIZE];
3708 sh_error_handle (level, FIL__, __LINE__, stat_return,
3709 MSG_FI_LSTAT,
3710 sh_error_message (stat_return,errbuf, sizeof(errbuf)),
3711 tmp2);
3712 }
3713 else
3714 {
3715 /* a dangling link -- everybody seems to have plenty of them
3716 */
3717 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_DLNK,
3718 tmp, tmp2);
3719 }
3720 theFile->linkisok = BAD;
[93]3721 SH_FREE(tmp);
[167]3722 SH_FREE(tmp2);
3723 SH_FREE(linknamebuf);
3724 /*
3725 * changed Tue Feb 10 16:16:13 CET 2004:
3726 * add dangling symlinks into database
3727 * SL_RETURN((-1),_("sh_unix_getinfo"));
3728 */
3729 theFile->linkmode = 0;
3730 SL_RETURN((0),_("sh_unix_getinfo"));
[93]3731 }
[1]3732
[167]3733 theFile->linkisok = GOOD;
3734
3735
3736 /* --- Determine file type. ---
3737 */
3738 sh_unix_getinfo_type (&lbuf, &type, theFile->link_c_mode);
3739 theFile->type = type;
3740
3741 /* --- Determine permissions. ---
3742 */
3743 sh_unix_getinfo_mode (&lbuf, &mode, theFile->link_c_mode);
3744 theFile->linkmode = lbuf.st_mode;
3745
3746 /* --- Output the link. ---
3747 */
3748 if (theFile->linkisok == GOOD)
3749 {
3750 tmp2 = sh_util_safe_name (linknamebuf);
3751 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LLNK,
3752 theFile->link_c_mode, tmp2);
3753 SH_FREE(tmp2);
3754 }
3755 SH_FREE(linknamebuf);
3756 }
3757 else /* not a link */
3758 {
3759 if (content)
3760 {
3761 sh_util_base64_enc_alloc (&(theFile->link_path),
3762 sh_string_str(content),
3763 sh_string_len(content));
3764 }
3765 }
[1]3766 SL_RETURN((0),_("sh_unix_getinfo"));
3767}
3768
3769/* #if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE) */
3770#endif
3771
3772int sh_unix_unlock (char * lockfile, char * flag);
3773int sh_unix_lock (char * lockfile, char * flag);
3774
3775/* check whether file is locked
3776 */
3777int sh_unix_test_and_lock (char * filename, char * lockfile)
3778{
3779 static struct stat buf;
3780 int status = 0;
3781
3782
3783 SL_TICKET fd;
3784 char line_in[128];
3785
3786 SL_ENTER(_("sh_unix_test_and_lock"));
3787
3788 status = retry_lstat (FIL__, __LINE__, lockfile, &buf);
3789
3790 /* --- No lock file found, try to lock. ---
3791 */
3792
3793 if (status < 0 && errno == ENOENT)
3794 {
3795 if (0 == sh_unix_lock (lockfile, filename))
3796 {
3797 if (filename != NULL)
3798 sh.flag.islocked = GOOD;
3799 SL_RETURN((0),_("sh_unix_test_and_lock"));
3800 }
[76]3801 else
3802 {
3803 sh_error_handle ((-1), FIL__, __LINE__, status,
3804 MSG_E_SUBGEN,
3805 (filename == NULL) ? _("Cannot create PID file") : _("Cannot create lock file"),
3806 _("sh_unix_test_and_lock"));
3807 SL_RETURN((-1),_("sh_unix_test_and_lock"));
3808 }
[1]3809 }
3810 else if (status == 0 && buf.st_size == 0)
3811 {
3812 if (filename != NULL)
3813 sh.flag.islocked = GOOD;
3814 sh_unix_unlock (lockfile, filename);
3815 if (filename != NULL)
3816 sh.flag.islocked = BAD;
3817 if (0 == sh_unix_lock (lockfile, filename))
3818 {
3819 if (filename != NULL)
3820 sh.flag.islocked = GOOD;
3821 SL_RETURN((0),_("sh_unix_test_and_lock"));
3822 }
3823 else
3824 {
[76]3825 sh_error_handle ((-1), FIL__, __LINE__, status,
3826 MSG_E_SUBGEN,
3827 (filename == NULL) ? _("Cannot create PID file") : _("Cannot create lock file"),
3828 _("sh_unix_test_and_lock"));
[1]3829 SL_RETURN((-1),_("sh_unix_test_and_lock"));
3830 }
3831 }
3832
3833 /* --- Check on lock. ---
3834 */
3835
3836 if (status >= 0)
3837 {
3838 fd = sl_open_read (lockfile, SL_YESPRIV);
3839 if (SL_ISERROR(fd))
3840 sh_error_handle ((-1), FIL__, __LINE__, fd,
3841 MSG_E_SUBGEN,
3842 (filename == NULL) ? _("Cannot open PID file for read") : _("Cannot open lock file for read"),
3843 _("sh_unix_test_and_lock"));
3844 }
3845 else
3846 fd = -1;
3847
3848 if (!SL_ISERROR(fd))
3849 {
3850 /* read the PID in the lock file
3851 */
[76]3852 status = sl_read (fd, line_in, sizeof(line_in));
3853 line_in[sizeof(line_in)-1] = '\0';
[1]3854
3855 /* convert to numeric
3856 */
3857 if (status > 0)
3858 {
3859 errno = 0;
3860 status = strtol(line_in, (char **)NULL, 10);
3861 if (errno == ERANGE || status <= 0)
3862 {
3863 sh_error_handle ((-1), FIL__, __LINE__, status,
3864 MSG_E_SUBGEN,
3865 (filename == NULL) ? _("Bad PID in PID file") : _("Bad PID in lock file"),
3866 _("sh_unix_test_and_lock"));
3867
3868 status = -1;
3869 }
3870 }
3871 else
3872 {
3873 sh_error_handle ((-1), FIL__, __LINE__, status,
3874 MSG_E_SUBGEN,
3875 (filename == NULL) ? _("Cannot read PID file") : _("Cannot read lock file"),
3876 _("sh_unix_test_and_lock"));
3877 }
3878 sl_close(fd);
3879
[162]3880 if (status > 0 && (unsigned int) status == sh.pid)
[1]3881 {
3882 if (filename != NULL)
3883 sh.flag.islocked = GOOD;
3884 SL_RETURN((0),_("sh_unix_test_and_lock"));
3885 }
3886
3887
3888 /* --- Check whether the process exists. ---
3889 */
3890 if (status > 0)
3891 {
3892 errno = 0;
3893 status = aud_kill (FIL__, __LINE__, status, 0);
3894
3895 /* Does not exist, so remove the stale lock
3896 * and create a new one.
3897 */
3898 if (status < 0 && errno == ESRCH)
3899 {
3900 if (filename != NULL)
3901 sh.flag.islocked = GOOD;
3902 if (0 != sh_unix_unlock(lockfile, filename) && (filename !=NULL))
3903 sh.flag.islocked = BAD;
3904 else
3905 {
3906 if (0 == sh_unix_lock (lockfile, filename))
3907 {
3908 if (filename != NULL)
3909 sh.flag.islocked = GOOD;
3910 SL_RETURN((0),_("sh_unix_test_and_lock"));
3911 }
3912 else
3913 {
3914 sh_error_handle ((-1), FIL__, __LINE__, status,
3915 MSG_E_SUBGEN,
3916 (filename == NULL) ? _("Cannot create PID file") : _("Cannot create lock file"),
3917 _("sh_unix_test_and_lock"));
3918 }
3919 if (filename != NULL)
3920 sh.flag.islocked = BAD;
3921 }
3922 }
3923 else
3924 {
3925 sh_error_handle ((-1), FIL__, __LINE__, status,
3926 MSG_E_SUBGEN,
3927 (filename == NULL) ? _("Cannot remove stale PID file, PID may be a running process") : _("Cannot remove stale lock file, PID may be a running process"),
3928 _("sh_unix_test_and_lock"));
3929 if (filename != NULL)
3930 sh.flag.islocked = BAD;
3931 }
3932 }
3933 }
3934 SL_RETURN((-1),_("sh_unix_testlock"));
3935}
3936
3937/* write the PID file
3938 */
3939int sh_unix_write_pid_file()
3940{
3941 return sh_unix_test_and_lock(NULL, sh.srvlog.alt);
3942}
3943
3944/* write lock for filename
3945 */
3946int sh_unix_write_lock_file(char * filename)
3947{
[34]3948 size_t len;
3949 int res;
[1]3950 char * lockfile;
3951
3952 if (filename == NULL)
3953 return (-1);
3954
[34]3955 len = sl_strlen(filename);
3956 if (sl_ok_adds(len, 6))
3957 len += 6;
3958 lockfile = SH_ALLOC(len);
3959 sl_strlcpy(lockfile, filename, len);
3960 sl_strlcat(lockfile, _(".lock"), len);
3961 res = sh_unix_test_and_lock(filename, lockfile);
[1]3962 SH_FREE(lockfile);
[34]3963 return res;
[1]3964}
3965
3966int sh_unix_unlock(char * lockfile, char * flag)
3967{
3968 int error = 0;
3969
3970 SL_ENTER(_("sh_unix_unlock"));
3971
3972 /* --- Logfile is not locked to us. ---
3973 */
3974 if (sh.flag.islocked == BAD && flag != NULL)
3975 SL_RETURN((-1),_("sh_unix_unlock"));
3976
3977 /* --- Check whether the directory is secure. ---
3978 */
3979 if (0 != tf_trust_check (lockfile, SL_YESPRIV))
3980 SL_RETURN((-1),_("sh_unix_unlock"));
3981
3982 /* --- Delete the lock file. ---
3983 */
3984 error = retry_aud_unlink (FIL__, __LINE__, lockfile);
3985
3986 if (error == 0)
3987 {
3988 if (flag != NULL)
3989 sh.flag.islocked = BAD; /* not locked anymore */
3990 }
3991 else if (flag != NULL)
3992 {
[132]3993 char errbuf[SH_ERRBUF_SIZE];
[1]3994 error = errno;
3995 sh_error_handle ((-1), FIL__, __LINE__, error, MSG_E_UNLNK,
[132]3996 sh_error_message(error, errbuf, sizeof(errbuf)),
3997 lockfile);
[1]3998 SL_RETURN((-1),_("sh_unix_unlock"));
3999 }
4000 SL_RETURN((0),_("sh_unix_unlock"));
4001}
4002
4003/* rm lock for filename
4004 */
4005int sh_unix_rm_lock_file(char * filename)
4006{
[34]4007 size_t len;
4008 int res;
[1]4009 char * lockfile;
4010
4011 if (filename == NULL)
4012 return (-1);
4013
[34]4014 len = sl_strlen(filename);
4015 if (sl_ok_adds(len, 6))
4016 len += 6;
4017 lockfile = SH_ALLOC(len);
4018 sl_strlcpy(lockfile, filename, len);
4019 sl_strlcat(lockfile, _(".lock"), len);
4020
4021 res = sh_unix_unlock(lockfile, filename);
[1]4022 SH_FREE(lockfile);
[34]4023 return res;
[1]4024}
4025
4026/* rm lock for filename
4027 */
4028int sh_unix_rm_pid_file()
4029{
4030 return sh_unix_unlock(sh.srvlog.alt, NULL);
4031}
4032
4033int sh_unix_lock (char * lockfile, char * flag)
4034{
4035 int filed;
4036 int errnum;
4037 char myPid[64];
4038 SL_TICKET fd;
4039 extern int get_the_fd (SL_TICKET ticket);
4040
4041 SL_ENTER(_("sh_unix_lock"));
4042
[162]4043 sprintf (myPid, "%ld\n", (long) sh.pid); /* known to fit */
[1]4044
[76]4045 fd = sl_open_safe_rdwr (lockfile, SL_YESPRIV); /* fails if file exists */
[1]4046
4047 if (!SL_ISERROR(fd))
4048 {
4049 errnum = sl_write (fd, myPid, sl_strlen(myPid));
4050 filed = get_the_fd(fd);
4051 fchmod (filed, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
4052 sl_close (fd);
4053
4054 if (!SL_ISERROR(errnum))
4055 {
4056 if (flag != NULL)
4057 sh.flag.islocked = GOOD;
4058 SL_RETURN((0),_("sh_unix_lock"));
4059 }
4060 }
4061
4062 TPT((0, FIL__, __LINE__, _("msg=<open pid file failed>\n")));
4063 if (flag != NULL)
4064 sh.flag.islocked = BAD;
4065 SL_RETURN((-1),_("sh_unix_lock"));
4066
4067 /* notreached */
4068}
4069
4070/* Test whether file exists
4071 */
[78]4072int sh_unix_file_exists(char * path)
[1]4073{
4074 struct stat buf;
4075
[78]4076 SL_ENTER(_("sh_unix_file_exists"));
[1]4077
4078 if (-1 == retry_stat(FIL__, __LINE__, path, &buf))
[78]4079 SL_RETURN( S_FALSE, _("sh_unix_file_exists"));
[1]4080 else
[78]4081 SL_RETURN( S_TRUE, _("sh_unix_file_exists"));
[1]4082}
4083
4084
[78]4085/* Test whether file exists, is a character device, and allows read
4086 * access.
[1]4087 */
[78]4088int sh_unix_device_readable(int fd)
[1]4089{
4090 struct stat buf;
4091
[78]4092 SL_ENTER(_("sh_unix_device_readable"));
[1]4093
4094 if (retry_fstat(FIL__, __LINE__, fd, &buf) == -1)
[78]4095 SL_RETURN( (-1), _("sh_unix_device_readable"));
4096 else if ( S_ISCHR(buf.st_mode) && 0 != (S_IROTH & buf.st_mode) )
4097 SL_RETURN( (0), _("sh_unix_device_readable"));
[1]4098 else
[78]4099 SL_RETURN( (-1), _("sh_unix_device_readable"));
[1]4100}
4101
4102static char preq[16];
4103
4104/* return true if database is remote
4105 */
4106int file_is_remote ()
4107{
4108 static int init = 0;
[42]4109 struct stat buf;
[1]4110
4111 SL_ENTER(_("file_is_remote"));
4112
4113 if (init == 0)
4114 {
4115 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4116 ++init;
4117 }
4118 if (0 == sl_strncmp (sh.data.path, preq, 15))
4119 {
[42]4120 if (sh.data.path[15] != '\0') /* should be start of path */
4121 {
4122 if (0 == stat(&(sh.data.path[15]), &buf))
4123 {
4124 SL_RETURN( S_FALSE, _("file_is_remote"));
4125 }
4126 }
[1]4127 SL_RETURN( S_TRUE, _("file_is_remote"));
4128 }
4129 SL_RETURN( S_FALSE, _("file_is_remote"));
4130}
4131
4132/* Return the path to the configuration/database file.
4133 */
4134char * file_path(char what, char flag)
4135{
4136 static int init = 0;
4137
4138 SL_ENTER(_("file_path"));
4139
4140 if (init == 0)
4141 {
4142 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4143 ++init;
4144 }
4145
4146 switch (what)
4147 {
4148
4149 case 'C':
4150 if (0 == sl_strncmp (sh.conf.path, preq, 15))
4151 {
4152#if defined(SH_WITH_SERVER)
4153 if (sh.flag.isserver == S_TRUE && sl_strlen(sh.conf.path) == 15)
4154 SL_RETURN( NULL, _("file_path"));
4155 if (sh.flag.isserver == S_TRUE)
4156 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4157#endif
4158 if (flag == 'R')
4159 SL_RETURN( preq, _("file_path"));
4160 if (flag == 'I')
4161 {
4162 if (sl_strlen(sh.conf.path) == 15)
4163 SL_RETURN( NULL, _("file_path"));
4164 else
4165 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4166 }
4167 SL_RETURN ( preq, _("file_path"));
4168 }
4169 else
4170 SL_RETURN( sh.conf.path, _("file_path"));
4171 /* break; *//* unreachable */
4172
4173 case 'D':
4174 if (0 == sl_strncmp (sh.data.path, preq, 15))
4175 {
4176 if (flag == 'R')
4177 SL_RETURN( preq, _("file_path"));
4178 if (flag == 'W' && sl_strlen(sh.data.path) == 15)
4179 SL_RETURN (NULL, _("file_path"));
4180 if (flag == 'W')
4181 SL_RETURN( &(sh.data.path[15]), _("file_path"));
4182 }
4183 else
4184 SL_RETURN( sh.data.path, _("file_path"));
4185 break;
4186
4187 default:
4188 SL_RETURN( NULL, _("file_path"));
4189 }
4190
4191 return NULL; /* notreached */
4192}
4193/************************************************/
4194/**** Mlock Utilities ****/
4195/************************************************/
4196
4197#include <limits.h>
4198
4199int sh_unix_pagesize()
4200{
4201 int pagesize = 4096;
4202#if defined(_SC_PAGESIZE)
4203 pagesize = sysconf(_SC_PAGESIZE);
4204#elif defined(_SC_PAGE_SIZE)
4205 pagesize = sysconf(_SC_PAGE_SIZE);
4206#elif defined(HAVE_GETPAGESIZE)
4207 pagesize = getpagesize();
4208#elif defined(PAGESIZE)
4209 pagesize = PAGESIZE;
4210#endif
4211
4212 return ((pagesize > 0) ? pagesize : 4096);
4213}
4214
4215typedef struct sh_page_lt {
4216 unsigned long page_start;
4217 int page_refcount;
[19]4218 char file[64];
4219 int line;
[1]4220 struct sh_page_lt * next;
4221} sh_page_l;
4222
4223sh_page_l * sh_page_locked = NULL;
4224volatile int page_locking = 0;
4225
4226unsigned long sh_unix_lookup_page (void * in_addr, size_t len, int * num_pages)
4227{
4228 int pagesize = sh_unix_pagesize();
4229 unsigned long addr = (unsigned long) in_addr;
4230
4231 unsigned long pagebase;
4232 unsigned long pagediff;
4233 unsigned long pagenum = addr / pagesize;
4234
4235 SL_ENTER(_("sh_unix_lookup_page"));
4236#if 0
4237 fprintf(stderr, "mlock: --> base %ld, pagenum: %ld\n",
4238 addr, pagenum);
4239#endif
4240
4241 /* address of first page
4242 */
4243 pagebase = pagenum * pagesize;
4244
4245 /* number of pages
4246 */
4247 pagediff = (addr + len) - pagebase;
4248 pagenum = pagediff / pagesize;
4249 if (pagenum * pagesize < pagediff)
4250 ++pagenum;
4251
4252#if 0
4253 fprintf(stderr, "mlock: --> pagebase %ld, pagediff %ld, (addr + len) %ld\n",
4254 pagebase, pagediff, (addr + len));
4255#endif
4256
4257 *num_pages = pagenum;
4258 SL_RETURN((pagebase), _("sh_unix_lookup_page"));
4259}
4260
4261
4262#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
[134]4263
4264SH_MUTEX_STATIC(mutex_mlock,PTHREAD_MUTEX_INITIALIZER);
4265
[19]4266int sh_unix_mlock (char * file, int line, void * in_addr, size_t len)
[1]4267{
4268 int num_pages;
4269 int status = 0;
4270 int pagesize;
4271 sh_page_l * page_list = sh_page_locked;
4272 unsigned long addr;
4273#ifdef TEST_MLOCK
4274 int i = 0;
4275#endif
4276
4277 SL_ENTER(_("sh_unix_mlock"));
4278
[134]4279 /* There's no cancellation point here, except if tracing is on
4280 */
4281 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4282
[1]4283 if (0 != page_locking)
4284 {
[143]4285 status = -1;
4286 goto exit_mlock;
[1]4287 }
[134]4288
[1]4289 page_locking = 1;
4290
4291 pagesize = sh_unix_pagesize();
4292 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4293
4294#ifdef TEST_MLOCK
4295 fprintf(stderr, "mlock: addr %ld, base %ld, pages: %d, length %d\n",
4296 (unsigned long) in_addr, addr, num_pages, len);
4297#endif
4298
4299 /* increase refcount of locked pages
4300 * addr is first page; num_pages is #(consecutive pages) to lock
4301 */
[134]4302
[1]4303 while ((page_list != NULL) && (num_pages > 0))
4304 {
4305#ifdef TEST_MLOCK
4306 fprintf(stderr, "mlock: check page %d: %ld [%d]\n",
4307 i, page_list->page_start, page_list->page_refcount);
4308#endif
4309 if (page_list->page_start == addr)
4310 {
4311 page_list->page_refcount += 1;
4312 num_pages -= 1;
4313 addr += pagesize;
4314#ifdef TEST_MLOCK
4315 fprintf(stderr, "mlock: found page %d: %ld [%d], next page %ld\n",
4316 i, page_list->page_start, page_list->page_refcount, addr);
4317#endif
4318 }
4319#ifdef TEST_MLOCK
4320 ++i;
4321#endif
4322 page_list = page_list->next;
4323 }
4324
4325 /* mlock some more pages, if needed
4326 */
4327 while (num_pages > 0)
4328 {
4329#ifdef TEST_MLOCK
4330 fprintf(stderr, "mlock: lock page %d: mlock %ld [num_pages %d]\n",
4331 i, addr, num_pages);
4332 ++i;
4333#endif
4334 page_list = SH_ALLOC(sizeof(sh_page_l));
4335 page_list->page_start = addr;
4336 page_list->page_refcount = 1;
[19]4337 sl_strlcpy(page_list->file, file, 64);
4338 page_list->line = line;
[1]4339 status = mlock( (void *) addr, pagesize);
4340 if (status != 0)
4341 {
4342#ifdef TEST_MLOCK
[132]4343 char errbuf[SH_ERRBUF_SIZE];
4344 fprintf(stderr, "mlock: error: %s\n",
4345 sh_error_message(errno, errbuf, sizeof(errbuf)));
[1]4346#endif
4347 SH_FREE(page_list);
4348 page_locking = 0;
[143]4349 goto exit_mlock;
[1]4350 }
4351 page_list->next = sh_page_locked;
4352 sh_page_locked = page_list;
4353 num_pages -= 1;
4354 addr += pagesize;
4355 }
[134]4356 page_locking = 0;
[143]4357
4358 exit_mlock:
[134]4359 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
[1]4360
4361 SL_RETURN((status), _("sh_unix_mlock"));
4362}
4363#else
[49]4364int sh_unix_mlock (char * file, int line, void * in_addr, size_t len)
[1]4365{
[49]4366 (void) file; (void) line;
[1]4367 (void) in_addr; (void) len;
4368 return -1;
4369}
4370#endif
4371
4372#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4373int sh_unix_munlock (void * in_addr, size_t len)
4374{
4375 int num_pages;
4376 int unlocked = 0;
4377 int status = 0;
4378 int pagesize;
4379 sh_page_l * page_list = sh_page_locked;
4380 sh_page_l * page_last;
4381 unsigned long addr;
4382
4383 int test_count;
4384 int test_status;
4385 int test_pages;
4386
4387#ifdef TEST_MLOCK
4388 int i = 0;
4389#endif
4390
4391 SL_ENTER(_("sh_unix_munlock"));
4392
[134]4393 /* There's no cancellation point here, except if tracing is on
4394 */
4395 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4396
[1]4397 if (0 != page_locking)
4398 {
[143]4399 status = -1;
4400 goto exit_munlock;
[1]4401 }
4402 page_locking = 1;
4403
4404 pagesize = sh_unix_pagesize();
4405 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4406
4407#ifdef TEST_MLOCK
4408 fprintf(stderr, "munlock: in_addr %ld, addr %ld, pages: %d, length %d\n",
4409 (unsigned long) in_addr, addr, num_pages, len);
4410#endif
4411
4412 test_pages = num_pages;
4413
4414 /* reduce refcount of locked pages
4415 * addr is first page; num_pages is #(consecutive pages) to lock
4416 */
4417 while ((page_list != NULL) && (num_pages > 0))
4418 {
4419#ifdef TEST_MLOCK
4420 fprintf(stderr, "munlock: page %d: %ld [%d]\n",
4421 i, page_list->page_start, page_list->page_refcount);
4422#endif
4423
4424 test_status = 0;
4425 for (test_count = 0; test_count < test_pages; ++test_count)
4426 {
4427 if (page_list->page_start == (addr + (test_count * pagesize)))
4428 {
4429 test_status = 1;
4430 break;
4431 }
4432 }
4433
4434 if (test_status == 1)
4435 {
4436 page_list->page_refcount -= 1;
4437 if (page_list->page_refcount == 0)
4438 {
4439 status = munlock ( (void *) addr, pagesize);
4440 ++unlocked;
4441 }
4442 num_pages -= 1;
4443#ifdef TEST_MLOCK
4444 fprintf(stderr,
4445 "munlock: page %d: %ld [refcount %d], refcount reduced\n",
4446 i, page_list->page_start, page_list->page_refcount);
4447#endif
4448 }
4449#ifdef TEST_MLOCK
4450 ++i;
4451#endif
4452 page_list = page_list->next;
4453 }
4454
4455#ifdef TEST_MLOCK
4456 i = 0;
4457#endif
4458
4459 if (unlocked > 0)
4460 {
4461 page_list = sh_page_locked;
4462 page_last = sh_page_locked;
4463
4464 while ((page_list != NULL) && (unlocked > 0))
4465 {
4466 if (page_list->page_refcount == 0)
4467 {
4468#ifdef TEST_MLOCK
4469 fprintf(stderr, "munlock: remove page %d: %ld [refcount %d]\n",
4470 i, page_list->page_start, page_list->page_refcount);
4471#endif
4472 if (page_last != page_list)
4473 {
4474 page_last->next = page_list->next;
4475 SH_FREE(page_list);
4476 page_list = page_last->next;
4477 }
4478 else
4479 {
4480 page_last = page_list->next;
4481 if (page_list == sh_page_locked)
4482 sh_page_locked = page_list->next;
4483 SH_FREE(page_list);
4484 page_list = page_last;
4485 }
4486 --unlocked;
4487 }
4488 else
4489 {
4490#ifdef TEST_MLOCK
4491 fprintf(stderr, "munlock: skip page %d: %ld [refcount %d]\n",
4492 i, page_list->page_start, page_list->page_refcount);
4493#endif
4494
4495 page_last = page_list;
4496 page_list = page_list->next;
4497 }
4498#ifdef TEST_MLOCK
4499 ++i;
4500#endif
4501 }
4502 }
4503
4504 page_locking = 0;
[143]4505
4506 exit_munlock:
[134]4507 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
[1]4508 SL_RETURN((status), _("sh_unix_munlock"));
4509}
4510#else
4511int sh_unix_munlock (void * in_addr, size_t len)
4512{
4513 (void) in_addr; (void) len;
4514 return -1;
4515}
4516#endif
4517
4518int sh_unix_count_mlock()
4519{
4520 int i = 0;
4521 char str[128];
4522 sh_page_l * page_list = sh_page_locked;
4523
4524 SL_ENTER(_("sh_unix_count_mlock"));
4525 while (page_list != NULL)
4526 {
[19]4527#ifdef WITH_TPT
[25]4528 sl_snprintf(str, sizeof(str), _("file: %s line: %d page: %d"),
[19]4529 page_list->file, page_list->line, i+1);
4530 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, i, MSG_E_SUBGEN,
4531 str, _("sh_unix_count_mlock"));
4532#endif
[1]4533 page_list = page_list->next;
4534 ++i;
4535 }
[25]4536 sl_snprintf(str, sizeof(str), _("%d pages locked"), i);
[1]4537 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, i, MSG_E_SUBGEN,
4538 str, _("sh_unix_count_mlock"));
4539 SL_RETURN((i), _("sh_unix_count_mlock"));
4540}
4541
4542/************************************************/
4543/************************************************/
4544/**** Stealth Utilities ****/
4545/************************************************/
4546/************************************************/
4547#ifdef SH_STEALTH
4548
4549void sh_unix_xor_code (char * str, int len)
4550{
4551 register int i;
4552
4553 for (i = 0; i < len; ++i) str[i] ^= (char) XOR_CODE;
4554 return;
4555}
4556
4557#if !defined(SH_STEALTH_MICRO)
4558
4559
[89]4560int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
4561 unsigned long * bytes_read);
[1]4562unsigned long first_hex_block(SL_TICKET fd, unsigned long * max);
4563
4564/*
4565 * --- Get hidden data from a block of hex data. ---
4566 */
4567int sh_unix_getline_stealth (SL_TICKET fd, char * str, int len)
4568{
[89]4569 int add_off = 0, llen;
4570 static unsigned long off_data = 0;
4571 static unsigned long max_data = 0;
4572 static unsigned long bytes_read = 0;
[52]4573 static int stealth_init = BAD;
[1]4574
4575 SL_ENTER(_("sh_unix_getline_stealth"));
4576
[34]4577
[1]4578 /* --- Initialize. ---
4579 */
4580 if (stealth_init == BAD)
4581 {
4582 off_data = first_hex_block(fd, &max_data);
4583 if (off_data == 0)
4584 {
4585 dlog(1, FIL__, __LINE__,
4586 _("The stealth config file does not contain any steganographically\nhidden data. This file must be an image file in _uncompressed_\npostscript format.\nTo hide data in it, use:\n samhain_stealth -s postscript_file orig_config_file\n mv postscript_file /path/to/config/file\n"));
4587 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
4588 _("Stealth config file."));
4589 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
4590 }
4591 stealth_init = GOOD;
[52]4592 max_data += off_data;
[1]4593 }
4594
4595 /* --- Seek to proper position. ---
4596 */
[89]4597 if (bytes_read >= max_data || add_off < 0)
[52]4598 {
4599 dlog(1, FIL__, __LINE__,
4600 _("The capacity of the container image file for the stealth config file seems to be too small. Your config file is likely truncated.\n"));
4601 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
4602 _("Stealth config file."));
4603 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
4604 }
[1]4605 sl_seek(fd, off_data);
4606
4607 /* --- Read one line. ---
4608 */
[89]4609 add_off = hideout_hex_block(fd, (unsigned char *) str, len, &bytes_read);
[1]4610 off_data += add_off;
4611
4612 llen = sl_strlen(str);
4613 SL_RETURN(llen, _("sh_unix_getline_stealth"));
4614}
4615
[89]4616int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
4617 unsigned long * bytes_read)
[1]4618{
4619
4620 register int i, j, k;
4621 unsigned char c, e;
4622 register int num;
4623 unsigned char mask[9] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
4624 unsigned long here = 0;
4625 unsigned long retval = 0;
[89]4626 unsigned long bread = 0;
[1]4627
4628 SL_ENTER(_("hideout_hex_block"));
4629
[34]4630 ASSERT_RET((len > 1), _("len > 1"), (0));
4631
4632 --len;
4633
[1]4634 i = 0;
4635 while (i < len)
4636 {
4637 for (j = 0; j < 8; ++j)
4638 {
4639
4640 /* --- Get a low byte, modify, read back. ---
4641 */
4642 for (k = 0; k < 2; ++k)
4643 {
4644 /* -- Skip whitespace. ---
4645 */
4646 c = ' ';
4647 do {
4648 do {
4649 num = sl_read (fd, &c, 1);
4650 } while (num == 0 && errno == EINTR);
[89]4651 if (num > 0)
4652 ++here;
4653 else if (num == 0)
[34]4654 SL_RETURN((0), _("hideout_hex_block"));
[89]4655 else
4656 SL_RETURN((-1), _("hideout_hex_block"));
[1]4657 } while (c == '\n' || c == '\t' || c == '\r' ||
4658 c == ' ');
4659 }
4660
4661
4662 /* --- e is the value of the low byte. ---
4663 */
4664 e = (unsigned char) sh_util_hexchar( c );
4665 if ((e & mask[7]) != 0) /* bit is set */
4666 str[i] |= mask[j];
4667 else /* bit is not set */
4668 str[i] &= ~mask[j];
4669
[89]4670 bread += 1;
[1]4671 }
4672 if (str[i] == '\n') break;
4673 ++i;
4674 }
4675
4676 if (i != 0)
4677 str[i] = '\0';
4678 else
[34]4679 str[i+1] = '\0'; /* keep newline and terminate */
[1]4680 retval += here;
[89]4681 *bytes_read += (bread/8);
[1]4682
4683 SL_RETURN(retval, _("hideout_hex_block"));
4684}
4685
4686/* --- Get offset of first data block. ---
4687 */
4688unsigned long first_hex_block(SL_TICKET fd, unsigned long * max)
4689{
[34]4690 unsigned int i;
4691 long num = 1;
4692 unsigned long lnum;
[1]4693 char c;
4694 int nothex = 0;
4695 unsigned long retval = 0;
[34]4696 unsigned int this_line = 0;
[1]4697 char theline[SH_BUFSIZE];
4698
4699 SL_ENTER(_("first_hex_block"));
4700
4701 *max = 0;
4702
4703 while (1)
4704 {
4705 theline[0] = '\0';
4706 this_line = 0;
4707 c = '\0';
[34]4708 while (c != '\n' && num > 0 && this_line < (sizeof(theline)-1))
[1]4709 {
4710 do {
4711 num = sl_read (fd, &c, 1);
4712 } while (num == 0 && errno == EINTR);
4713 if (num > 0)
4714 theline[this_line] = c;
4715 else
4716 SL_RETURN((0), _("first_hex_block"));
[34]4717 ++this_line;
[1]4718 }
4719 theline[this_line] = '\0';
4720
4721 /* not only 'newline' */
4722 if (this_line > 60)
4723 {
4724 nothex = 0;
4725 i = 0;
4726 while (nothex == 0 && i < (this_line-1))
4727 {
4728 if (! isxdigit((int)theline[i])) nothex = 1;
4729 ++i;
4730 }
4731 if (nothex == 1) retval += this_line;
4732 }
4733 else
4734 {
4735 nothex = 1;
4736 retval += this_line;
4737 }
4738
4739 if (nothex == 0)
4740 {
4741 *max = 0;
4742 do {
4743 do {
4744 num = sl_read (fd, theline, SH_BUFSIZE);
4745 } while (num == 0 && errno == EINTR);
[34]4746 if (num > 0)
4747 {
4748 lnum = (unsigned long) num;
4749 for (i = 0; i < lnum; ++i)
4750 {
4751 c = theline[i];
4752 if (c == '\n' || c == '\t' || c == '\r' || c == ' ')
4753 ;
4754 else if (!isxdigit((int)c))
4755 break;
4756 else
4757 *max += 1;
4758 }
[1]4759 }
4760 } while (num > 0);
4761
4762 *max /= 16;
4763 SL_RETURN((retval), _("first_hex_block"));
4764 }
4765
4766 }
4767 /* SL_RETURN((0), _("first_hex_block")); *//* unreachable */
4768}
4769
4770 /* if !defined(SH_STEALTH_MICRO) */
4771#endif
4772
4773 /* ifdef SH_STEALTH */
4774#endif
4775
4776/*
4777 * anti-debugger code
4778 */
4779#if defined(SCREW_IT_UP)
4780volatile int sh_not_traced = 0;
4781
4782#ifdef HAVE_GETTIMEOFDAY
4783struct timeval save_tv;
4784#endif
4785
4786void sh_sigtrap_handler (int signum)
4787{
4788#ifdef HAVE_GETTIMEOFDAY
4789 struct timeval tv;
4790 long difftv;
4791
4792 gettimeofday(&tv, NULL);
4793 difftv = (tv.tv_sec - save_tv.tv_sec) * 1000000 +
4794 (tv.tv_usec - save_tv.tv_usec);
4795 if (difftv > 500000)
4796 _exit(6);
4797#endif
4798 sh_not_traced += signum;
4799 return;
4800}
4801#endif
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