source: trunk/src/sh_unix.c@ 290

Last change on this file since 290 was 290, checked in by katerina, 14 years ago

Fixes for tickets #215, #216, #217, #218, version bumped to 2.7.2
File size: 123.0 KB
Line 
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>
27#ifdef HAVE_LINUX_FS_H
28#include <linux/fs.h>
29#endif
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/* need to undef these, since the #define's may be picked up from
46 * linux/wait.h, and will clash with a typedef in sys/wait.h
47 */
48#undef P_ALL
49#undef P_PID
50#undef P_PGID
51#include <sys/wait.h>
52
53/*********************
54#ifdef HAVE_SYS_VFS_H
55#include <sys/vfs.h>
56#endif
57**********************/
58#endif
59
60#if TIME_WITH_SYS_TIME
61#include <sys/time.h>
62#include <time.h>
63#else
64#if HAVE_SYS_TIME_H
65#include <sys/time.h>
66#else
67#include <time.h>
68#endif
69#endif
70
71#ifdef HAVE_SYS_SELECT_H
72#include <sys/select.h>
73#endif
74
75#ifndef FD_SET
76#define NFDBITS 32
77#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
78#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
79#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
80#endif /* !FD_SET */
81#ifndef FD_SETSIZE
82#define FD_SETSIZE 32
83#endif
84#ifndef FD_ZERO
85#define FD_ZERO(p) memset((char *)(p), '\0', sizeof(*(p)))
86#endif
87
88
89#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
90#include <sys/mman.h>
91#endif
92
93#include "samhain.h"
94#include "sh_error.h"
95#include "sh_unix.h"
96#include "sh_utils.h"
97#include "sh_mem.h"
98#include "sh_hash.h"
99#include "sh_tools.h"
100#include "sh_tiger.h"
101#include "sh_prelink.h"
102#include "sh_pthread.h"
103
104/* moved here from far below
105 */
106#include <netdb.h>
107
108#define SH_NEED_PWD_GRP
109#define SH_NEED_GETHOSTBYXXX
110#include "sh_static.h"
111
112#ifndef HAVE_LSTAT
113#define lstat stat
114#endif
115
116#if defined(S_IFLNK) && !defined(S_ISLNK)
117#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
118#else
119#if !defined(S_ISLNK)
120#define S_ISLNK(mode) (0)
121#endif
122#endif
123
124#if defined(S_IFSOCK) && !defined(S_ISSOCK)
125#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
126#else
127#if !defined(S_ISSOCK)
128#define S_ISSOCK(mode) (0)
129#endif
130#endif
131
132#if defined(S_IFDOOR) && !defined(S_ISDOOR)
133#define S_ISDOOR(mode) (((mode) & S_IFMT) == S_IFDOOR)
134#else
135#if !defined(S_ISDOOR)
136#define S_ISDOOR(mode) (0)
137#endif
138#endif
139
140#if defined(S_IFPORT) && !defined(S_ISPORT)
141#define S_ISPORT(mode) (((mode) & S_IFMT) == S_IFPORT)
142#else
143#if !defined(S_ISPORT)
144#define S_ISPORT(mode) (0)
145#endif
146#endif
147
148#define SH_KEY_NULL _("000000000000000000000000000000000000000000000000")
149
150#undef FIL__
151#define FIL__ _("sh_unix.c")
152
153unsigned long mask_PRELINK = MASK_PRELINK_;
154unsigned long mask_USER0 = MASK_USER_;
155unsigned long mask_USER1 = MASK_USER_;
156unsigned long mask_USER2 = MASK_USER_;
157unsigned long mask_USER3 = MASK_USER_;
158unsigned long mask_USER4 = MASK_USER_;
159unsigned long mask_ALLIGNORE = MASK_ALLIGNORE_;
160unsigned long mask_ATTRIBUTES = MASK_ATTRIBUTES_;
161unsigned long mask_LOGFILES = MASK_LOGFILES_;
162unsigned long mask_LOGGROW = MASK_LOGGROW_;
163unsigned long mask_READONLY = MASK_READONLY_;
164unsigned long mask_NOIGNORE = MASK_NOIGNORE_;
165
166
167extern char **environ;
168
169int sh_unix_maskreset()
170{
171 mask_PRELINK = MASK_PRELINK_;
172 mask_USER0 = MASK_USER_;
173 mask_USER1 = MASK_USER_;
174 mask_USER2 = MASK_USER_;
175 mask_USER3 = MASK_USER_;
176 mask_USER4 = MASK_USER_;
177 mask_ALLIGNORE = MASK_ALLIGNORE_;
178 mask_ATTRIBUTES = MASK_ATTRIBUTES_;
179 mask_LOGFILES = MASK_LOGFILES_;
180 mask_LOGGROW = MASK_LOGGROW_;
181 mask_READONLY = MASK_READONLY_;
182 mask_NOIGNORE = MASK_NOIGNORE_;
183 return 0;
184}
185
186
187#ifdef SYS_SIGLIST_DECLARED
188/* extern const char * const sys_siglist[]; */
189#else
190char * sh_unix_siglist (int signum)
191{
192 switch (signum)
193 {
194#ifdef SIGHUP
195 case SIGHUP:
196 return _("Hangup");
197#endif
198#ifdef SIGINT
199 case SIGINT:
200 return _("Interrupt");
201#endif
202#ifdef SIGQUIT
203 case SIGQUIT:
204 return _("Quit");
205#endif
206#ifdef SIGILL
207 case SIGILL:
208 return _("Illegal instruction");
209#endif
210#ifdef SIGTRAP
211 case SIGTRAP:
212 return _("Trace/breakpoint trap");
213#endif
214#ifdef SIGABRT
215 case SIGABRT:
216 return _("IOT trap/Abort");
217#endif
218#ifdef SIGBUS
219 case SIGBUS:
220 return _("Bus error");
221#endif
222#ifdef SIGFPE
223 case SIGFPE:
224 return _("Floating point exception");
225#endif
226#ifdef SIGUSR1
227 case SIGUSR1:
228 return _("User defined signal 1");
229#endif
230#ifdef SIGSEGV
231 case SIGSEGV:
232 return _("Segmentation fault");
233#endif
234#ifdef SIGUSR2
235 case SIGUSR2:
236 return _("User defined signal 2");
237#endif
238#ifdef SIGPIPE
239 case SIGPIPE:
240 return _("Broken pipe");
241#endif
242#ifdef SIGALRM
243 case SIGALRM:
244 return _("Alarm clock");
245#endif
246#ifdef SIGTERM
247 case SIGTERM:
248 return _("Terminated");
249#endif
250#ifdef SIGSTKFLT
251 case SIGSTKFLT:
252 return _("Stack fault");
253#endif
254#ifdef SIGCHLD
255 case SIGCHLD:
256 return _("Child exited");
257#endif
258#ifdef SIGCONT
259 case SIGCONT:
260 return _("Continued");
261#endif
262#ifdef SIGSTOP
263 case SIGSTOP:
264 return _("Stopped");
265#endif
266#ifdef SIGTSTP
267 case SIGTSTP:
268 return _("Stop typed at tty");
269#endif
270#ifdef SIGTTIN
271 case SIGTTIN:
272 return _("Stopped (tty input)");
273#endif
274#ifdef SIGTTOU
275 case SIGTTOU:
276 return _("Stopped (tty output)");
277#endif
278#ifdef SIGURG
279 case SIGURG:
280 return _("Urgent condition");
281#endif
282#ifdef SIGXCPU
283 case SIGXCPU:
284 return _("CPU time limit exceeded");
285#endif
286#ifdef SIGXFSZ
287 case SIGXFSZ:
288 return _("File size limit exceeded");
289#endif
290#ifdef SIGVTALRM
291 case SIGVTALRM:
292 return _("Virtual time alarm");
293#endif
294#ifdef SIGPROF
295 case SIGPROF:
296 return _("Profile signal");
297#endif
298#ifdef SIGWINCH
299 case SIGWINCH:
300 return _("Window size changed");
301#endif
302#ifdef SIGIO
303 case SIGIO:
304 return _("Possible I/O");
305#endif
306#ifdef SIGPWR
307 case SIGPWR:
308 return _("Power failure");
309#endif
310#ifdef SIGUNUSED
311 case SIGUNUSED:
312 return _("Unused signal");
313#endif
314 }
315 return _("Unknown");
316}
317#endif
318
319
320/* Log from within a signal handler without using any
321 * functions that are not async signal safe.
322 *
323 * This is the safe_itoa helper function.
324 */
325char * safe_itoa(int i, char * str, int size)
326{
327 unsigned int u;
328 int iisneg = 0;
329 char *p = &str[size-1];
330
331 *p = '\0';
332 if (i < 0) {
333 iisneg = 1;
334 u = ((unsigned int)(-(1+i))) + 1;
335 } else {
336 u = i;
337 }
338 do {
339 --p;
340 *p = '0' + (u % 10);
341 u /= 10;
342 } while (u && (p != str));
343 if ((iisneg == 1) && (p != str)) {
344 --p;
345 *p = '-';
346 }
347 return p;
348}
349
350/* Log from within a signal handler without using any
351 * functions that are not async signal safe.
352 *
353 * This is the safe_logger function.
354 * Arguments: signal (signal number), method (0=logger, 1=stderr), thepid (pid)
355 */
356extern int OnlyStderr;
357
358int safe_logger (int thesignal, int method, char * details)
359{
360 unsigned int i = 0;
361 int status = -1;
362 struct stat buf;
363 pid_t newpid;
364 char str[128];
365 char * p;
366
367 char l0[64], l1[64], l2[64], l3[64];
368 char a0[32], a1[32], a2[32];
369 char e0[128];
370 char msg[128];
371
372 char * locations[] = { NULL, NULL, NULL, NULL, NULL };
373 char * envp[] = { NULL, NULL };
374 char * argp[] = { NULL, NULL, NULL, NULL, NULL };
375
376 pid_t thepid = getpid();
377
378 if ((sh.flag.isdaemon == S_FALSE) || (OnlyStderr == S_TRUE))
379 method = 1;
380
381 /* seems that solaris cc needs this way of initializing ...
382 */
383 locations[0] = l0;
384 locations[1] = l1;
385 locations[2] = l2;
386 locations[3] = l3;
387
388 envp[0] = e0;
389
390 argp[0] = a0;
391 argp[1] = a1;
392 argp[2] = a2;
393
394 sl_strlcpy(msg, _("samhain["), 128);
395 p = safe_itoa((int) thepid, str, 128);
396 if (p && *p)
397 sl_strlcat(msg, p, 128);
398 if (thesignal == 0)
399 {
400 if (details == NULL) {
401 sl_strlcat(msg, _("]: out of memory"), 128);
402 } else {
403 sl_strlcat(msg, _("]: "), 128);
404 sl_strlcat(msg, details, 128);
405 }
406 }
407 else
408 {
409 sl_strlcat(msg, _("]: exit on signal "), 128);
410 p = safe_itoa(thesignal, str, 128);
411 if (p && *p)
412 sl_strlcat(msg, p, 128);
413 }
414
415 if (method == 1) {
416#ifndef STDERR_FILENO
417#define STDERR_FILENO 2
418#endif
419 int retval = 0;
420 do {
421 retval = write(STDERR_FILENO, msg, strlen(msg));
422 } while (retval < 0 && errno == EINTR);
423 do {
424 retval = write(STDERR_FILENO, "\n", 1);
425 } while (retval < 0 && errno == EINTR);
426 return 0;
427 }
428
429 sl_strlcpy (l0, _("/usr/bin/logger"), 64);
430 sl_strlcpy (l1, _("/usr/sbin/logger"), 64);
431 sl_strlcpy (l2, _("/usr/ucb/logger"), 64);
432 sl_strlcpy (l3, _("/bin/logger"), 64);
433
434 sl_strlcpy (a0, _("logger"), 32);
435 sl_strlcpy (a1, _("-p"), 32);
436 sl_strlcpy (a2, _("daemon.alert"), 32);
437
438 sl_strlcpy (e0,
439 _("PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/ucb:/usr/local/bin"),
440 128);
441
442 while (locations[i] != NULL) {
443 status = stat(locations[i], &buf);
444 if (status == 0)
445 break;
446 ++i;
447 }
448
449 if (locations[i] != NULL) {
450 argp[3] = msg;
451 newpid = fork();
452 if (newpid == 0) {
453 execve(locations[i], argp, envp);
454 _exit(1);
455 }
456 else if (newpid > 0) {
457 waitpid(newpid, &status, WUNTRACED);
458 }
459 }
460 return 0;
461}
462
463void safe_fatal (const char * details,
464 const char * file, int line)
465{
466 char msg[128];
467 char str[128];
468 char * p;
469 int thesignal = 0;
470 int method = 0;
471
472 p = safe_itoa((int) line, str, 128);
473 sl_strlcpy(msg, _("FATAL: "), 128);
474 sl_strlcat(msg, file, 128);
475 sl_strlcat(msg, ": ", 128);
476 if (p && (*p)) {
477 sl_strlcat(msg, p , 128);
478 sl_strlcat(msg, ": ", 128);
479 }
480 sl_strlcat(msg, details, 128);
481 (void) safe_logger (thesignal, method, msg);
482 raise(SIGKILL);
483}
484
485extern char sh_sig_msg[64];
486
487volatile int immediate_exit_normal = 0;
488
489#if defined(SA_SIGACTION_WORKS)
490static
491void sh_unix_sigexit (int mysignal, siginfo_t * signal_info, void * signal_add)
492#else
493static
494void sh_unix_sigexit (int mysignal)
495#endif
496{
497
498#if defined(SA_SIGACTION_WORKS)
499 if (signal_info != NULL && signal_info->si_code == SI_USER &&
500 mysignal != SIGTERM && mysignal != SIGINT)
501 {
502 return;
503 }
504
505 /* avoid compiler warning (unused var)
506 */
507 (void) signal_add;
508#endif
509
510 /*
511 * Block re-entry
512 */
513 if (immediate_exit_normal > 0)
514 {
515 ++immediate_exit_normal;
516 if ((skey != NULL) && (immediate_exit_normal == 2))
517 memset (skey, '\0', sizeof(sh_key_t));
518 if (immediate_exit_normal == 2)
519 {
520 int val_return;
521
522 do {
523 val_return = chdir ("/");
524 } while (val_return < 0 && errno == EINTR);
525
526 safe_logger (mysignal, 0, NULL);
527 }
528 raise(SIGKILL);
529 }
530 else
531 {
532 immediate_exit_normal = 1;
533 }
534
535#ifdef SYS_SIGLIST_DECLARED
536 strncpy (sh_sig_msg, sys_siglist[mysignal], 40);
537#else
538 strncpy (sh_sig_msg, sh_unix_siglist(mysignal), 40);
539#endif
540 sh_sig_msg[63] = '\0';
541
542 ++sig_raised;
543 ++sig_urgent;
544 sig_termfast = 1;
545 return;
546}
547
548volatile int immediate_exit_fast = 0;
549
550#if defined(SA_SIGACTION_WORKS)
551static
552void sh_unix_sigexit_fast (int mysignal, siginfo_t * signal_info,
553 void * signal_add)
554#else
555static
556void sh_unix_sigexit_fast (int mysignal)
557#endif
558{
559#if defined(SL_DEBUG) && (defined(USE_SYSTEM_MALLOC) || !defined(USE_MALLOC_LOCK))
560 int retval;
561#endif
562
563#if defined(SA_SIGACTION_WORKS)
564 if (signal_info != NULL && signal_info->si_code == SI_USER)
565 {
566 return;
567 }
568#endif
569
570 /* avoid compiler warning (unused var)
571 */
572#if defined(SA_SIGACTION_WORKS)
573 (void) signal_add;
574#endif
575
576 /* Check whether the heap is ok; otherwise _exit
577 */
578#if !defined(SL_DEBUG) || (!defined(USE_SYSTEM_MALLOC) && defined(USE_MALLOC_LOCK))
579 ++immediate_exit_fast;
580 if (skey != NULL && immediate_exit_fast < 2)
581 memset (skey, '\0', sizeof(sh_key_t));
582 if (immediate_exit_fast < 2)
583 safe_logger (mysignal, 0, NULL);
584 raise(SIGKILL);
585#else
586
587 /* debug code
588 */
589 if (immediate_exit_fast == 1)
590 {
591 ++immediate_exit_fast;
592 if (skey != NULL)
593 memset (skey, '\0', sizeof(sh_key_t));
594#ifdef WITH_MESSAGE_QUEUE
595 close_ipc ();
596#endif
597 safe_logger (mysignal, 0, NULL);
598 do {
599 retval = chdir ("/");
600 } while (retval < 0 && errno == EINTR);
601 raise(SIGFPE);
602 }
603 else if (immediate_exit_fast == 2)
604 {
605 do {
606 retval = chdir ("/");
607 } while (retval < 0 && errno == EINTR);
608 raise(SIGFPE);
609 }
610 else if (immediate_exit_fast != 0)
611 {
612 raise(SIGKILL);
613 }
614
615 ++immediate_exit_fast;
616
617 /* The FPE|BUS|SEGV|ILL signals leave the system in an undefined
618 * state, thus it is best to exit immediately.
619 */
620#ifdef SYS_SIGLIST_DECLARED
621 strncpy (sh_sig_msg, sys_siglist[mysignal], 40);
622#else
623 strncpy (sh_sig_msg, sh_unix_siglist(mysignal), 40);
624#endif
625 sh_sig_msg[63] = '\0';
626
627 sl_stack_print();
628
629 /* Try to push out an error message.
630 */
631 sh_error_handle ((-1), FIL__, __LINE__, mysignal, MSG_EXIT_NORMAL,
632 sh.prg_name, sh_sig_msg);
633
634 if (skey != NULL)
635 memset (skey, '\0', sizeof(sh_key_t));
636#ifdef WITH_MESSAGE_QUEUE
637 close_ipc ();
638#endif
639
640 do {
641 retval = chdir ("/");
642 } while (retval < 0 && errno == EINTR);
643
644 raise(SIGFPE);
645#endif
646}
647
648
649static
650void sh_unix_sigaction (int mysignal)
651{
652 ++sig_raised;
653#ifdef SIGUSR1
654 if (mysignal == SIGUSR1)
655 sig_debug_switch = 1;
656#endif
657#ifdef SIGUSR2
658 if (mysignal == SIGUSR2)
659 {
660 ++sig_suspend_switch;
661 ++sig_urgent;
662 }
663#endif
664#ifdef SIGHUP
665 if (mysignal == SIGHUP)
666 sig_config_read_again = 1;
667#endif
668#ifdef SIGTTOU
669 if (mysignal == SIGTTOU)
670 sig_force_check = 1;
671#endif
672#ifdef SIGTTIN
673 if (mysignal == SIGTTIN)
674 sig_fresh_trail = 1;
675#endif
676#ifdef SIGABRT
677 if (mysignal == SIGABRT)
678 sig_fresh_trail = 1;
679#endif
680#ifdef SIGQUIT
681 if (mysignal == SIGQUIT)
682 {
683 sig_terminate = 1;
684 ++sig_urgent;
685 }
686#endif
687#ifdef SIGTERM
688 if (mysignal == SIGTERM)
689 {
690 strncpy (sh_sig_msg, _("Terminated"), 40);
691 sig_termfast = 1;
692 ++sig_urgent;
693 }
694#endif
695
696 return;
697}
698
699static
700void sh_unix_siginstall (int goDaemon)
701{
702 struct sigaction act, act_fast, act2, oldact, ignact;
703#if defined (SH_WITH_SERVER)
704 (void) goDaemon;
705#endif
706
707 SL_ENTER(_("sh_unix_siginstall"));
708
709 ignact.sa_handler = SIG_IGN; /* signal action */
710 sigemptyset( &ignact.sa_mask ); /* set an empty mask */
711 ignact.sa_flags = 0; /* init sa_flags */
712
713#if defined(SA_SIGACTION_WORKS)
714 act.sa_sigaction = &sh_unix_sigexit; /* signal action */
715#else
716 act.sa_handler = &sh_unix_sigexit; /* signal action */
717#endif
718
719 sigfillset ( &act.sa_mask ); /* set a full mask */
720
721
722 /* Block all but deadly signals.
723 */
724#ifdef SIGILL
725 sigdelset ( &act.sa_mask, SIGILL );
726#endif
727#ifndef SL_DEBUG
728#ifdef SIGFPE
729 sigdelset ( &act.sa_mask, SIGFPE );
730#endif
731#endif
732#ifdef SIGSEGV
733 sigdelset ( &act.sa_mask, SIGSEGV );
734#endif
735#ifdef SIGBUS
736 sigdelset ( &act.sa_mask, SIGBUS );
737#endif
738
739#if defined(SA_SIGACTION_WORKS)
740 act_fast.sa_sigaction = &sh_unix_sigexit_fast; /* signal action */
741#else
742 act_fast.sa_handler = &sh_unix_sigexit_fast; /* signal action */
743#endif
744
745 sigfillset ( &act_fast.sa_mask ); /* set a full mask */
746
747#ifdef SIGILL
748 sigdelset ( &act_fast.sa_mask, SIGILL );
749#endif
750#ifndef SL_DEBUG
751#ifdef SIGFPE
752 sigdelset ( &act_fast.sa_mask, SIGFPE );
753#endif
754#endif
755#ifdef SIGSEGV
756 sigdelset ( &act_fast.sa_mask, SIGSEGV );
757#endif
758#ifdef SIGBUS
759 sigdelset ( &act_fast.sa_mask, SIGBUS );
760#endif
761
762
763 /* Use siginfo to verify origin of signal, if possible.
764 */
765#if defined(SA_SIGACTION_WORKS)
766 act.sa_flags = SA_SIGINFO;
767 act_fast.sa_flags = SA_SIGINFO;
768#else
769 act.sa_flags = 0;
770 act_fast.sa_flags = 0;
771#endif
772
773 /* Do not block the signal from being received in its handler ...
774 * (is this a good or a bad idea ??).
775 */
776#if defined(SA_NOMASK)
777 act_fast.sa_flags |= SA_NOMASK;
778#elif defined(SA_NODEFER)
779 act_fast.sa_flags |= SA_NODEFER;
780#endif
781
782
783 act2.sa_handler = &sh_unix_sigaction; /* signal action */
784 sigemptyset( &act2.sa_mask ); /* set an empty mask */
785 act2.sa_flags = 0; /* init sa_flags */
786
787 /* signals to control the daemon */
788
789#ifdef SIGHUP
790 retry_sigaction(FIL__, __LINE__, SIGHUP, &act2, &oldact);
791#endif
792#ifdef SIGABRT
793 retry_sigaction(FIL__, __LINE__, SIGABRT, &act2, &oldact);
794#endif
795#ifdef SIGUSR1
796 retry_sigaction(FIL__, __LINE__, SIGUSR1, &act2, &oldact);
797#endif
798#ifdef SIGUSR2
799 retry_sigaction(FIL__, __LINE__, SIGUSR2, &act2, &oldact);
800#endif
801#ifdef SIGQUIT
802 retry_sigaction(FIL__, __LINE__, SIGQUIT, &act2, &oldact);
803#endif
804#ifdef SIGTERM
805 retry_sigaction(FIL__, __LINE__, SIGTERM, &act, &oldact);
806#endif
807
808 /* fatal signals that may cause termination */
809
810#ifdef SIGILL
811 retry_sigaction(FIL__, __LINE__, SIGILL, &act_fast, &oldact);
812#endif
813#ifndef SL_DEBUG
814#ifdef SIGFPE
815 retry_sigaction(FIL__, __LINE__, SIGFPE, &act_fast, &oldact);
816#endif
817#endif
818#ifdef SIGSEGV
819 retry_sigaction(FIL__, __LINE__, SIGSEGV, &act_fast, &oldact);
820#endif
821#ifdef SIGBUS
822 retry_sigaction(FIL__, __LINE__, SIGBUS, &act_fast, &oldact);
823#endif
824
825 /* other signals */
826
827#ifdef SIGINT
828 retry_sigaction(FIL__, __LINE__, SIGINT, &act, &oldact);
829#endif
830#ifdef SIGPIPE
831#ifdef HAVE_PTHREAD
832 retry_sigaction(FIL__, __LINE__, SIGPIPE, &ignact, &oldact);
833#else
834 retry_sigaction(FIL__, __LINE__, SIGPIPE, &act, &oldact);
835#endif
836#endif
837#ifdef SIGALRM
838 retry_sigaction(FIL__, __LINE__, SIGALRM, &ignact, &oldact);
839#endif
840#ifdef SIGTSTP
841 retry_sigaction(FIL__, __LINE__, SIGTSTP, &ignact, &oldact);
842#endif
843
844#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
845#ifdef SIGTTOU
846 if (goDaemon == 1)
847 retry_sigaction(FIL__, __LINE__, SIGTTOU, &act2, &oldact);
848 else
849 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
850#endif
851#ifdef SIGTTIN
852 if (goDaemon == 1)
853 retry_sigaction(FIL__, __LINE__, SIGTTIN, &act2, &oldact);
854 else
855 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
856#endif
857#else
858#ifdef SIGTTOU
859 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
860#endif
861#ifdef SIGTTIN
862 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
863#endif
864#endif
865
866#ifdef SIGTRAP
867#if !defined(SCREW_IT_UP)
868 retry_sigaction(FIL__, __LINE__, SIGTRAP, &act, &oldact);
869#endif
870#endif
871
872#ifdef SIGPOLL
873 retry_sigaction(FIL__, __LINE__, SIGPOLL, &ignact, &oldact);
874#endif
875#if defined(SIGPROF) && !defined(SH_PROFILE)
876 retry_sigaction(FIL__, __LINE__, SIGPROF, &ignact, &oldact);
877#endif
878#ifdef SIGSYS
879 retry_sigaction(FIL__, __LINE__, SIGSYS, &act, &oldact);
880#endif
881#ifdef SIGURG
882 retry_sigaction(FIL__, __LINE__, SIGURG, &ignact, &oldact);
883#endif
884#if defined(SIGVTALRM) && !defined(SH_PROFILE)
885 retry_sigaction(FIL__, __LINE__, SIGVTALRM, &ignact, &oldact);
886#endif
887#ifdef SIGXCPU
888 retry_sigaction(FIL__, __LINE__, SIGXCPU, &act, &oldact);
889#endif
890#ifdef SIGXFSZ
891 retry_sigaction(FIL__, __LINE__, SIGXFSZ, &act, &oldact);
892#endif
893
894#ifdef SIGEMT
895 retry_sigaction(FIL__, __LINE__, SIGEMT, &ignact, &oldact);
896#endif
897#ifdef SIGSTKFLT
898 retry_sigaction(FIL__, __LINE__, SIGSTKFLT, &act, &oldact);
899#endif
900#ifdef SIGIO
901 retry_sigaction(FIL__, __LINE__, SIGIO, &ignact, &oldact);
902#endif
903#ifdef SIGPWR
904 retry_sigaction(FIL__, __LINE__, SIGPWR, &act, &oldact);
905#endif
906
907#ifdef SIGLOST
908 retry_sigaction(FIL__, __LINE__, SIGLOST, &ignact, &oldact);
909#endif
910#ifdef SIGUNUSED
911 retry_sigaction(FIL__, __LINE__, SIGUNUSED, &ignact, &oldact);
912#endif
913
914 SL_RET0(_("sh_unix_siginstall"));
915}
916
917/* ---------------------------------------------------------------- */
918
919/* checksum the own binary
920 */
921int sh_unix_self_hash (const char * c)
922{
923 char message[512];
924 char hashbuf[KEYBUF_SIZE];
925
926 SL_ENTER(_("sh_unix_self_hash"));
927
928 if (c == NULL)
929 {
930 sh.exec.path[0] = '\0';
931 SL_RETURN((0), _("sh_unix_self_hash"));
932 }
933 sl_strlcpy(sh.exec.path, c, SH_PATHBUF);
934
935 sl_strlcpy(sh.exec.hash,
936 sh_tiger_hash (c, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
937 KEY_LEN+1);
938 sl_snprintf(message, 512, _("%s has checksum: %s"),
939 sh.exec.path, sh.exec.hash);
940 message[511] = '\0';
941 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
942 message, _("sh_unix_self_hash"));
943 if (0 == sl_strcmp(sh.exec.hash, SH_KEY_NULL ))
944 {
945 dlog(1, FIL__, __LINE__,
946 _("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"),
947 sh.exec.path, sl_get_errmsg(), (int) sl_ret_euid());
948 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_NOACCESS,
949 (long) sh.real.uid, c);
950 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
951 }
952 SL_RETURN((0), _("sh_unix_self_hash"));
953}
954
955int sh_unix_self_check ()
956{
957 char newhash[KEY_LEN+1];
958 char message[512];
959 char hashbuf[KEYBUF_SIZE];
960
961 SL_ENTER(_("sh_unix_self_check"));
962 if (sh.exec.path == NULL || sh.exec.path[0] == '\0')
963 SL_RETURN((0), _("sh_unix_self_check"));
964
965 sl_strlcpy(newhash,
966 sh_tiger_hash (sh.exec.path, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
967 KEY_LEN+1);
968 if (0 == sl_strncmp(sh.exec.hash,
969 newhash,
970 KEY_LEN))
971 SL_RETURN((0), _("sh_unix_self_check"));
972
973
974 dlog(1, FIL__, __LINE__,
975 _("The checksum of the executable: %s has changed since startup (%s -> %s).\n"),
976 sh.exec.path, sh.exec.hash, newhash);
977
978 sl_snprintf(message, 512,
979 _("The checksum of %s has changed since startup (%s -> %s)"),
980 sh.exec.path, sh.exec.hash, newhash);
981 message[511] = '\0';
982
983 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
984 message, _("sh_unix_self_check"));
985 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_E_AUTH,
986 sh.exec.path);
987 SL_RETURN((-1), _("sh_unix_self_check"));
988}
989
990
991/* ---------------------------------------------------------------- */
992
993
994/* added Tue Feb 22 10:36:44 NFT 2000 Rainer Wichmann */
995static int tf_add_trusted_user_int(const char * c)
996{
997 struct passwd * w;
998 int count;
999 uid_t pwid = (uid_t)-1;
1000
1001#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1002 struct passwd pwd;
1003 char * buffer;
1004#endif
1005
1006 SL_ENTER(_("tf_add_trusted_user_int"));
1007
1008 /* First check for a user name.
1009 */
1010#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1011 buffer = SH_ALLOC(SH_PWBUF_SIZE);
1012 sh_getpwnam_r(c, &pwd, buffer, SH_PWBUF_SIZE, &w);
1013#else
1014 w = sh_getpwnam(c);
1015#endif
1016
1017 if ((w != NULL) && ((pwid = w->pw_uid) > 0))
1018 goto succe;
1019
1020 /* Failed, so check for a numerical value.
1021 */
1022 pwid = strtol(c, (char **)NULL, 10);
1023 if (pwid > 0 && pwid < 65535)
1024 goto succe;
1025
1026 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1027 _("add trusted user"), c);
1028#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1029 SH_FREE(buffer);
1030#endif
1031 SL_RETURN((-1), _("tf_add_trusted_user_int"));
1032
1033 succe:
1034 count = sl_trust_add_user(pwid);
1035#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1036 SH_FREE(buffer);
1037#endif
1038 SL_RETURN((count), _("tf_add_trusted_user_int"));
1039}
1040
1041int tf_add_trusted_user(const char * c)
1042{
1043 int i;
1044 char * q;
1045 char * p = sh_util_strdup (c);
1046#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1047 char * saveptr;
1048#endif
1049
1050 SL_ENTER(_("tf_add_trusted_user"));
1051
1052#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1053 q = strtok_r(p, ", \t", &saveptr);
1054#else
1055 q = strtok(p, ", \t");
1056#endif
1057 if (!q)
1058 {
1059 SH_FREE(p);
1060 SL_RETURN((-1), _("tf_add_trusted_user"));
1061 }
1062 while (q)
1063 {
1064 i = tf_add_trusted_user_int(q);
1065 if (SL_ISERROR(i))
1066 {
1067 SH_FREE(p);
1068 SL_RETURN((i), _("tf_add_trusted_user"));
1069 }
1070#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1071 q = strtok_r(NULL, ", \t", &saveptr);
1072#else
1073 q = strtok(NULL, ", \t");
1074#endif
1075 }
1076 SH_FREE(p);
1077 SL_RETURN((0), _("tf_add_trusted_user"));
1078}
1079
1080extern uid_t sl_trust_baduid(void);
1081extern gid_t sl_trust_badgid(void);
1082
1083#if defined(HOST_IS_CYGWIN) || defined(__cygwin__) || defined(__CYGWIN32__) || defined(__CYGWIN__)
1084int tf_trust_check (const char * file, int mode)
1085{
1086 (void) file;
1087 (void) mode;
1088 return 0;
1089}
1090#else
1091int tf_trust_check (const char * file, int mode)
1092{
1093 char * tmp;
1094 char * tmp2;
1095 char * p;
1096 int status;
1097 int level;
1098 uid_t ff_euid;
1099
1100 SL_ENTER(_("tf_trust_check"));
1101
1102 if (mode == SL_YESPRIV)
1103 sl_get_euid(&ff_euid);
1104 else
1105 sl_get_ruid(&ff_euid);
1106
1107#if defined(SH_WITH_SERVER)
1108 if (0 == sl_ret_euid()) /* privileges not dropped yet */
1109 {
1110#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1111 struct passwd pwd;
1112 char * buffer = SH_ALLOC(SH_PWBUF_SIZE);
1113 struct passwd * tempres;
1114 sh_getpwnam_r(DEFAULT_IDENT, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
1115#else
1116 struct passwd * tempres = sh_getpwnam(DEFAULT_IDENT);
1117#endif
1118
1119 if (!tempres)
1120 {
1121 dlog(1, FIL__, __LINE__,
1122 _("User %s does not exist. Please add the user to your system.\n"),
1123 DEFAULT_IDENT);
1124 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
1125 }
1126 ff_euid = tempres->pw_uid;
1127#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1128 SH_FREE(buffer);
1129#endif
1130 }
1131#endif
1132
1133 status = sl_trustfile_euid(file, ff_euid);
1134
1135 if ( SL_ENONE != status)
1136 {
1137 if (status == SL_ESTAT)
1138 level = SH_ERR_ALL;
1139 else
1140 level = SH_ERR_ERR;
1141
1142 tmp = sh_util_safe_name (file);
1143 p = sl_trust_errfile();
1144 if (p && *p != '\0')
1145 {
1146 tmp2 = sh_util_safe_name (sl_trust_errfile());
1147 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST2,
1148 sl_error_string(status), tmp, tmp2);
1149 SH_FREE(tmp2);
1150 }
1151 else
1152 {
1153 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST1,
1154 sl_error_string(status), tmp);
1155 }
1156 SH_FREE(tmp);
1157
1158 if (status == SL_EBADUID || status == SL_EBADGID ||
1159 status == SL_EBADOTH || status == SL_ETRUNC ||
1160 status == SL_EINTERNAL )
1161 {
1162 switch (status) {
1163 case SL_EINTERNAL:
1164 dlog(1, FIL__, __LINE__,
1165 _("An internal error occured in the trustfile function.\n"));
1166 break;
1167 case SL_ETRUNC:
1168 tmp = sh_util_safe_name (file);
1169 dlog(1, FIL__, __LINE__,
1170 _("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"),
1171 tmp);
1172 SH_FREE(tmp);
1173 break;
1174 case SL_EBADOTH:
1175 tmp = sh_util_safe_name (file);
1176 p = sl_trust_errfile();
1177 dlog(1, FIL__, __LINE__,
1178 _("The path element: %s\nin the filename: %s is world writeable.\n"),
1179 p, tmp);
1180 SH_FREE(tmp);
1181 break;
1182 case SL_EBADUID:
1183 tmp = sh_util_safe_name (file);
1184 p = sl_trust_errfile();
1185 dlog(1, FIL__, __LINE__,
1186 _("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"),
1187 (UID_CAST)sl_trust_baduid(), p, tmp);
1188 SH_FREE(tmp);
1189 break;
1190 case SL_EBADGID:
1191 tmp = sh_util_safe_name (file);
1192 p = sl_trust_errfile();
1193 dlog(1, FIL__, __LINE__,
1194 _("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"),
1195 p, tmp, (UID_CAST)sl_trust_badgid(),
1196 (UID_CAST)sl_trust_baduid());
1197 SH_FREE(tmp);
1198 break;
1199 default:
1200 break;
1201 }
1202
1203 SL_RETURN((-1), _("tf_trust_check"));
1204 }
1205 }
1206
1207 SL_RETURN((0), _("tf_trust_check"));
1208}
1209#endif
1210
1211#ifdef HAVE_INITGROUPS
1212#ifdef HOST_IS_OSF
1213int sh_unix_initgroups ( char * in_user, gid_t in_gid)
1214#else
1215int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1216#endif
1217{
1218 int status = -1;
1219 status = sh_initgroups (in_user, in_gid);
1220 if (status < 0)
1221 {
1222 if (errno == EPERM)
1223 return 0;
1224 if (errno == EINVAL)
1225 return 0;
1226 return -1;
1227 }
1228 return 0;
1229}
1230#else
1231int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1232{
1233 (void) in_user;
1234 (void) in_gid;
1235 return 0;
1236}
1237#endif
1238
1239#ifdef HAVE_INITGROUPS
1240char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len);
1241int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1242{
1243 int status = -1;
1244 char user[SH_MINIBUF];
1245
1246 SL_ENTER(_("sh_unix_initgroups2"));
1247
1248 if (NULL == sh_unix_getUIDname (SH_ERR_ERR, in_pid, user, sizeof(user)))
1249 SL_RETURN((-1), _("sh_unix_initgroups2"));
1250 status = sh_initgroups (user, in_gid);
1251 if (status < 0)
1252 {
1253 if (errno == EPERM)
1254 status = 0;
1255 if (errno == EINVAL)
1256 status = 0;
1257 }
1258 SL_RETURN((status), _("sh_unix_initgroups2"));
1259}
1260#else
1261int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1262{
1263 (void) in_pid;
1264 (void) in_gid;
1265 return 0;
1266}
1267#endif
1268
1269void sh_unix_closeall (int fd, int except, int inchild)
1270{
1271 int fdx = fd;
1272#ifdef _SC_OPEN_MAX
1273 int fdlimit = sysconf (_SC_OPEN_MAX);
1274#else
1275#ifdef OPEN_MAX
1276 int fdlimit = OPEN_MAX;
1277#else
1278 int fdlimit = _POSIX_OPEN_MAX;
1279#endif
1280#endif
1281
1282 SL_ENTER(_("sh_unix_closeall"));
1283
1284 /* can't happen - so fix it :-(
1285 */
1286 if (fdlimit < 0)
1287 fdlimit = 20; /* POSIX lower limit */
1288
1289 if (fdlimit > 65536)
1290 fdlimit = 65536;
1291
1292 if (!inchild)
1293 sl_dropall (fdx, except);
1294 else
1295 sl_dropall_dirty (fdx, except);
1296
1297 /* Close everything from fd (inclusive) up to fdlimit (exclusive).
1298 */
1299 while (fd < fdlimit)
1300 {
1301 if (fd == except)
1302 fd++;
1303 else if (slib_do_trace != 0 && fd == slib_trace_fd)
1304 fd++;
1305 else
1306 sl_close_fd(FIL__, __LINE__, fd++);
1307 }
1308
1309 SL_RET0(_("sh_unix_closeall"));
1310}
1311
1312static void sh_unix_setlimits(void)
1313{
1314 struct rlimit limits;
1315
1316 SL_ENTER(_("sh_unix_setlimits"));
1317
1318 limits.rlim_cur = RLIM_INFINITY;
1319 limits.rlim_max = RLIM_INFINITY;
1320
1321#ifdef RLIMIT_CPU
1322 setrlimit (RLIMIT_CPU, &limits);
1323#endif
1324#ifdef RLIMIT_FSIZE
1325 setrlimit (RLIMIT_FSIZE, &limits);
1326#endif
1327#ifdef RLIMIT_DATA
1328 setrlimit (RLIMIT_DATA, &limits);
1329#endif
1330#ifdef RLIMIT_STACK
1331 setrlimit (RLIMIT_STACK, &limits);
1332#endif
1333#ifdef RLIMIT_RSS
1334 setrlimit (RLIMIT_RSS, &limits);
1335#endif
1336#ifdef RLIMIT_NPROC
1337 setrlimit (RLIMIT_NPROC, &limits);
1338#endif
1339#ifdef RLIMIT_MEMLOCK
1340 setrlimit (RLIMIT_MEMLOCK, &limits);
1341#endif
1342
1343#if !defined(SL_DEBUG)
1344 /* no core dumps
1345 */
1346 limits.rlim_cur = 0;
1347 limits.rlim_max = 0;
1348#ifdef RLIMIT_CORE
1349 setrlimit (RLIMIT_CORE, &limits);
1350#endif
1351#else
1352#ifdef RLIMIT_CORE
1353 setrlimit (RLIMIT_CORE, &limits);
1354#endif
1355#endif
1356
1357 limits.rlim_cur = 1024;
1358 limits.rlim_max = 1024;
1359
1360#if defined(RLIMIT_NOFILE)
1361 setrlimit (RLIMIT_NOFILE, &limits);
1362#elif defined(RLIMIT_OFILE)
1363 setrlimit (RLIMIT_OFILE, &limits);
1364#endif
1365
1366 SL_RET0(_("sh_unix_setlimits"));
1367}
1368
1369static void sh_unix_copyenv(void)
1370{
1371 char ** env0 = environ;
1372 char ** env1;
1373 int envlen = 0;
1374 size_t len;
1375
1376 SL_ENTER(_("sh_unix_copyenv"));
1377
1378 while (env0 != NULL && env0[envlen] != NULL) {
1379 /* printf("%2d: %s\n", envlen, env0[envlen]); */
1380 ++envlen;
1381 }
1382 ++envlen;
1383
1384 /* printf("-> %2d: slots allocated\n", envlen); */
1385 env1 = malloc (sizeof(char *) * envlen); /* only once */
1386 if (env1 == NULL)
1387 {
1388 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1389 SL_RET0(_("sh_unix_copyenv"));
1390 }
1391 env0 = environ;
1392 envlen = 0;
1393
1394 while (env0 != NULL && env0[envlen] != NULL) {
1395 len = strlen(env0[envlen]) + 1;
1396 env1[envlen] = malloc (len); /* only once */
1397 if (env1[envlen] == NULL)
1398 {
1399 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1400 SL_RET0(_("sh_unix_copyenv"));
1401 }
1402 sl_strlcpy(env1[envlen], env0[envlen], len);
1403 ++envlen;
1404 }
1405 env1[envlen] = NULL;
1406
1407 environ = env1;
1408 SL_RET0(_("sh_unix_copyenv"));
1409}
1410
1411/* delete all environment variables
1412 */
1413static void sh_unix_zeroenv(void)
1414{
1415 char * c;
1416 char ** env;
1417
1418 SL_ENTER(_("sh_unix_zeroenv"));
1419
1420 sh_unix_copyenv();
1421 env = environ;
1422
1423 while (env != NULL && *env != NULL) {
1424 c = strchr ((*env), '=');
1425#ifdef WITH_MYSQL
1426 /*
1427 * Skip the MYSQL_UNIX_PORT environment variable; MySQL may need it.
1428 */
1429 if (0 == sl_strncmp((*env), _("MYSQL_UNIX_PORT="), 16))
1430 {
1431 ++(env);
1432 continue;
1433 }
1434 if (0 == sl_strncmp((*env), _("MYSQL_TCP_PORT="), 15))
1435 {
1436 ++(env);
1437 continue;
1438 }
1439 if (0 == sl_strncmp((*env), _("MYSQL_HOME="), 11))
1440 {
1441 ++(env);
1442 continue;
1443 }
1444#endif
1445#ifdef WITH_ORACLE
1446 /*
1447 * Skip the ORACLE_HOME environment variable; Oracle may need it.
1448 */
1449 if (0 == sl_strncmp((*env), _("ORACLE_HOME="), 12))
1450 {
1451 ++(env);
1452 continue;
1453 }
1454#endif
1455 /*
1456 * Skip the TZ environment variable.
1457 */
1458 if (0 == sl_strncmp((*env), _("TZ="), 3))
1459 {
1460 ++(env);
1461 continue;
1462 }
1463 ++(env);
1464 if (c != NULL)
1465 {
1466 ++c;
1467 while ((*c) != '\0') {
1468 (*c) = '\0';
1469 ++c;
1470 }
1471 }
1472 }
1473
1474#ifdef HAVE_TZSET
1475 tzset();
1476#endif
1477
1478 SL_RET0(_("sh_unix_zeroenv"));
1479}
1480
1481
1482static void sh_unix_resettimer(void)
1483{
1484 struct itimerval this_timer;
1485
1486 SL_ENTER(_("sh_unix_resettimer"));
1487
1488 this_timer.it_value.tv_sec = 0;
1489 this_timer.it_value.tv_usec = 0;
1490
1491 this_timer.it_interval.tv_sec = 0;
1492 this_timer.it_interval.tv_usec = 0;
1493
1494 setitimer(ITIMER_REAL, &this_timer, NULL);
1495#if !defined(SH_PROFILE)
1496 setitimer(ITIMER_VIRTUAL, &this_timer, NULL);
1497 setitimer(ITIMER_PROF, &this_timer, NULL);
1498#endif
1499
1500 SL_RET0(_("sh_unix_resettimer"));
1501}
1502
1503static void sh_unix_resetsignals(void)
1504{
1505 int sig_num;
1506#ifdef NSIG
1507 int max_sig = NSIG;
1508#else
1509 int max_sig = 255;
1510#endif
1511 int test;
1512 int status;
1513 struct sigaction act;
1514#if !defined(SH_PROFILE)
1515 struct sigaction oldact;
1516#endif
1517
1518 sigset_t set_proc;
1519
1520 SL_ENTER(_("sh_unix_resetsignals"));
1521 /*
1522 * Reset the current signal mask (inherited from parent process).
1523 */
1524
1525 sigfillset(&set_proc);
1526
1527 do {
1528 errno = 0;
1529 test = sigprocmask(SIG_UNBLOCK, &set_proc, NULL);
1530 } while (test < 0 && errno == EINTR);
1531
1532 /*
1533 * Reset signal handling.
1534 */
1535
1536 act.sa_handler = SIG_DFL; /* signal action */
1537 sigemptyset( &act.sa_mask ); /* set an empty mask */
1538 act.sa_flags = 0; /* init sa_flags */
1539
1540 for (sig_num = 1; sig_num <= max_sig; ++sig_num)
1541 {
1542#if !defined(SH_PROFILE)
1543 test = retry_sigaction(FIL__, __LINE__, sig_num, &act, &oldact);
1544#else
1545 test = 0;
1546#endif
1547 if ((test == -1) && (errno != EINVAL))
1548 {
1549 char errbuf[SH_ERRBUF_SIZE];
1550 status = errno;
1551 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_SIG,
1552 sh_error_message (status, errbuf, sizeof(errbuf)), sig_num);
1553 }
1554 }
1555
1556 SL_RET0(_("sh_unix_resetsignals"));
1557}
1558
1559/* Get the local hostname (FQDN)
1560 */
1561#include <sys/socket.h>
1562
1563/* Required for BSD
1564 */
1565#ifdef HAVE_NETINET_IN_H
1566#include <netinet/in.h>
1567#endif
1568
1569#include <arpa/inet.h>
1570
1571const char * sh_unix_h_name (struct hostent * host_entry)
1572{
1573 char ** p;
1574 if (strchr(host_entry->h_name, '.')) {
1575 return host_entry->h_name;
1576 } else {
1577 for (p = host_entry->h_aliases; *p; ++p) {
1578 if (strchr(*p, '.'))
1579 return *p;
1580 }
1581 }
1582 return host_entry->h_name;
1583}
1584
1585/* uname() on FreeBSD is broken, because the 'nodename' buf is too small
1586 * to hold a valid (leftmost) domain label.
1587 */
1588#if defined(HAVE_UNAME) && !defined(HOST_IS_FREEBSD)
1589#include <sys/utsname.h>
1590void sh_unix_localhost()
1591{
1592 struct utsname buf;
1593 struct hostent * he1;
1594 int i;
1595 int ddot;
1596 int len;
1597 char * p;
1598 char hostname[256];
1599
1600
1601 SL_ENTER(_("sh_unix_localhost"));
1602
1603 (void) uname (&buf);
1604 /* flawfinder: ignore */ /* ff bug, ff sees system() */
1605 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1606 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1607 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1608
1609 /* Workaround for cases where nodename could be
1610 * a truncated FQDN.
1611 */
1612 if (strlen(buf.nodename) == (sizeof(buf.nodename)-1))
1613 {
1614 p = strchr(buf.nodename, '.');
1615 if (NULL != p) {
1616 *p = '\0';
1617 sl_strlcpy(hostname, buf.nodename, 256);
1618 } else {
1619#ifdef HAVE_GETHOSTNAME
1620 if (0 != gethostname(hostname, 256))
1621 {
1622 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1623 _("nodename returned by uname may be truncated"),
1624 _("sh_unix_localhost"));
1625 sl_strlcpy (hostname, buf.nodename, 256);
1626 }
1627 else
1628 {
1629 hostname[255] = '\0';
1630 }
1631#else
1632 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1633 _("nodename returned by uname may be truncated"),
1634 _("sh_unix_localhost"));
1635 sl_strlcpy(hostname, buf.nodename, 256);
1636#endif
1637 }
1638 }
1639 else
1640 {
1641 sl_strlcpy(hostname, buf.nodename, 256);
1642 }
1643
1644 SH_MUTEX_LOCK(mutex_resolv);
1645 he1 = sh_gethostbyname(hostname);
1646
1647 if (he1 != NULL)
1648 {
1649 sl_strlcpy (sh.host.name, sh_unix_h_name(he1), SH_PATHBUF);
1650 }
1651 SH_MUTEX_UNLOCK(mutex_resolv);
1652
1653 if (he1 == NULL)
1654 {
1655 dlog(1, FIL__, __LINE__,
1656 _("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"),
1657 hostname);
1658 sl_strlcpy (sh.host.name, hostname, SH_PATHBUF);
1659 }
1660
1661
1662 /* check whether it looks like a FQDN
1663 */
1664 len = sl_strlen(sh.host.name);
1665 ddot = 0;
1666 for (i = 0; i < len; ++i)
1667 if (sh.host.name[i] == '.') ++ddot;
1668
1669 if (ddot == 0 && he1 != NULL)
1670 {
1671 dlog(1, FIL__, __LINE__,
1672 _("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"),
1673 hostname, sh.host.name);
1674 sl_strlcpy (sh.host.name,
1675 inet_ntoa (*(struct in_addr *) he1->h_addr),
1676 SH_PATHBUF);
1677 SL_RET0(_("sh_unix_localhost"));
1678 }
1679
1680 if (is_numeric(sh.host.name))
1681 {
1682 dlog(1, FIL__, __LINE__,
1683 _("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"),
1684 hostname, sh.host.name);
1685 }
1686
1687 SL_RET0(_("sh_unix_localhost"));
1688}
1689
1690#else
1691
1692/*
1693 * --FreeBSD code
1694 */
1695#if defined(HAVE_UNAME)
1696#include <sys/utsname.h>
1697#endif
1698void sh_unix_localhost()
1699{
1700#if defined(HAVE_UNAME)
1701 struct utsname buf;
1702#endif
1703 struct hostent * he1;
1704 int i;
1705 int ddot;
1706 int len;
1707 char hostname[1024];
1708
1709
1710 SL_ENTER(_("sh_unix_localhost"));
1711
1712#if defined(HAVE_UNAME)
1713 (void) uname (&buf);
1714 /* flawfinder: ignore */ /* ff bug, ff sees system() */
1715 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1716 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1717 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1718#endif
1719
1720 (void) gethostname (hostname, 1024);
1721 hostname[1023] = '\0';
1722
1723 SH_MUTEX_LOCK(mutex_resolv);
1724 he1 = sh_gethostbyname(hostname);
1725
1726 if (he1 != NULL)
1727 {
1728 sl_strlcpy (sh.host.name, sh_unix_h_name(he1), SH_PATHBUF);
1729 }
1730 SH_MUTEX_UNLOCK(mutex_resolv);
1731
1732 if (he1 == NULL)
1733 {
1734 dlog(1, FIL__, __LINE__,
1735 _("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"),
1736 hostname);
1737 sl_strlcpy (sh.host.name, _("localhost"), SH_PATHBUF);
1738 SL_RET0(_("sh_unix_localhost"));
1739 }
1740
1741 /* check whether it looks like a FQDN
1742 */
1743 len = sl_strlen(sh.host.name);
1744 ddot = 0;
1745 for (i = 0; i < len; ++i)
1746 if (sh.host.name[i] == '.') ++ddot;
1747 if (ddot == 0)
1748 {
1749 dlog(1, FIL__, __LINE__,
1750 _("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"),
1751 hostname, sh.host.name);
1752 sl_strlcpy (sh.host.name,
1753 inet_ntoa (*(struct in_addr *) he1->h_addr),
1754 SH_PATHBUF);
1755 SL_RET0(_("sh_unix_localhost"));
1756 }
1757
1758 if (is_numeric(sh.host.name))
1759 {
1760 dlog(1, FIL__, __LINE__,
1761 _("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"),
1762 hostname, sh.host.name);
1763 }
1764
1765 SL_RET0(_("sh_unix_localhost"));
1766}
1767#endif
1768
1769
1770void sh_unix_memlock()
1771{
1772 SL_ENTER(_("sh_unix_memlock"));
1773
1774 /* do this before dropping privileges
1775 */
1776#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
1777 if (skey->mlock_failed == SL_FALSE)
1778 {
1779 if ( (-1) == sh_unix_mlock( FIL__, __LINE__,
1780 (char *) skey, sizeof (sh_key_t)) )
1781 {
1782 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1783 skey->mlock_failed = SL_TRUE;
1784 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1785 }
1786 }
1787#else
1788 if (skey->mlock_failed == SL_FALSE)
1789 {
1790 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1791 skey->mlock_failed = SL_TRUE;
1792 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1793 }
1794#endif
1795
1796 SL_RET0(_("sh_unix_memlock"));
1797}
1798
1799#ifdef SH_WITH_SERVER
1800char * chroot_dir = NULL;
1801
1802int sh_unix_set_chroot(const char * str)
1803{
1804 size_t len;
1805 static int block = 0;
1806
1807 if (block == 1)
1808 return 0;
1809
1810 if (str && *str == '/')
1811 {
1812 len = strlen(str) + 1;
1813 chroot_dir = malloc(strlen(str) + 1); /* only once */
1814 if (!chroot_dir)
1815 {
1816 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1817 return 1;
1818 }
1819 sl_strlcpy(chroot_dir, str, len);
1820 block = 1;
1821 return 0;
1822 }
1823 return 1;
1824}
1825
1826int sh_unix_chroot(void)
1827{
1828 int status;
1829
1830 if (chroot_dir != NULL)
1831 {
1832 status = retry_aud_chdir(FIL__, __LINE__, chroot_dir);
1833 if ( (-1) == status )
1834 {
1835 char errbuf[SH_ERRBUF_SIZE];
1836 status = errno;
1837 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
1838 sh_error_message (status, errbuf, sizeof(errbuf)), chroot_dir);
1839 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1840 }
1841 /* flawfinder: ignore */
1842 return (chroot(chroot_dir));
1843 }
1844 return 0;
1845}
1846/* #ifdef SH_WITH_SERVER */
1847#else
1848int sh_unix_chroot(void) { return 0; }
1849#endif
1850
1851/* daemon mode
1852 */
1853static int block_setdeamon = 0;
1854
1855int sh_unix_setdeamon(const char * dummy)
1856{
1857 int res = 0;
1858
1859 SL_ENTER(_("sh_unix_setdeamon"));
1860
1861 if (block_setdeamon != 0)
1862 SL_RETURN((0),_("sh_unix_setdeamon"));
1863
1864 if (dummy == NULL)
1865 sh.flag.isdaemon = ON;
1866 else
1867 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1868
1869 if (sh.flag.opts == S_TRUE)
1870 block_setdeamon = 1;
1871
1872 SL_RETURN(res, _("sh_unix_setdeamon"));
1873}
1874#if defined(HAVE_LIBPRELUDE)
1875#include "sh_prelude.h"
1876#endif
1877
1878int sh_unix_setnodeamon(const char * dummy)
1879{
1880 int res = 0;
1881
1882 SL_ENTER(_("sh_unix_setnodeamon"));
1883
1884 if (block_setdeamon != 0)
1885 SL_RETURN((0),_("sh_unix_setmodeamon"));
1886
1887 if (dummy == NULL)
1888 sh.flag.isdaemon = OFF;
1889 else
1890 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1891
1892 if (sh.flag.opts == S_TRUE)
1893 block_setdeamon = 1;
1894
1895 SL_RETURN(res, _("sh_unix_setnodeamon"));
1896}
1897
1898int sh_unix_init(int goDaemon)
1899{
1900 int status;
1901 uid_t uid;
1902 pid_t oldpid = getpid();
1903#if defined(SH_WITH_SERVER)
1904 extern int sh_socket_open_int (void);
1905#endif
1906 char errbuf[SH_ERRBUF_SIZE];
1907
1908 SL_ENTER(_("sh_unix_init"));
1909
1910 /* fork twice, exit the parent process
1911 */
1912 if (goDaemon == 1) {
1913
1914 switch (aud_fork(FIL__, __LINE__)) {
1915 case 0: break; /* child process continues */
1916 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1917 default: aud__exit(FIL__, __LINE__, 0); /* parent process exits */
1918 }
1919
1920 /* Child processes do not inherit page locks across a fork.
1921 * Error in next fork would return in this (?) thread of execution.
1922 */
1923 sh_unix_memlock();
1924
1925 setsid(); /* should not fail */
1926 sh.pid = (UINT64) getpid();
1927
1928 switch (aud_fork(FIL__, __LINE__)) {
1929 case 0: break; /* child process continues */
1930 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1931 default: aud__exit(FIL__, __LINE__, 0); /* parent process exits */
1932 }
1933
1934 /* Child processes do not inherit page locks across a fork.
1935 */
1936 sh_unix_memlock();
1937 sh.pid = (UINT64) getpid();
1938
1939 } else {
1940 setsid(); /* should not fail */
1941 }
1942
1943 /* set working directory
1944 */
1945#ifdef SH_PROFILE
1946 status = 0;
1947#else
1948 status = retry_aud_chdir(FIL__, __LINE__, "/");
1949#endif
1950 if ( (-1) == status )
1951 {
1952 status = errno;
1953 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
1954 sh_error_message (status, errbuf, sizeof(errbuf)), "/");
1955 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1956 }
1957
1958 /* reset timers
1959 */
1960 sh_unix_resettimer();
1961
1962 /* signal handlers
1963 */
1964 sh_unix_resetsignals();
1965#if defined(SCREW_IT_UP)
1966 sh_sigtrap_prepare();
1967#endif
1968 sh_unix_siginstall (goDaemon);
1969
1970 /* set file creation mask
1971 */
1972 (void) umask (0); /* should not fail */
1973
1974 /* set resource limits to maximum, and
1975 * core dump size to zero
1976 */
1977 sh_unix_setlimits();
1978
1979 /* zero out the environment (like PATH='\0')
1980 */
1981 sh_unix_zeroenv();
1982
1983 if (goDaemon == 1)
1984 {
1985 /* Close first tree file descriptors
1986 */
1987 sl_close_fd (FIL__, __LINE__, 0); /* if running as daemon */
1988 sl_close_fd (FIL__, __LINE__, 1); /* if running as daemon */
1989 sl_close_fd (FIL__, __LINE__, 2); /* if running as daemon */
1990
1991 /* Enable full error logging
1992 */
1993 sh_error_only_stderr (S_FALSE);
1994
1995 /* open first three streams to /dev/null
1996 */
1997 status = aud_open(FIL__, __LINE__, SL_NOPRIV, _("/dev/null"), O_RDWR, 0);
1998 if (status < 0)
1999 {
2000 status = errno;
2001 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2002 sh_error_message(status, errbuf, sizeof(errbuf)), _("open"));
2003 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2004 }
2005
2006 status = retry_aud_dup(FIL__, __LINE__, 0);
2007 if (status >= 0)
2008 retry_aud_dup(FIL__, __LINE__, 0);
2009
2010 if (status < 0)
2011 {
2012 status = errno;
2013 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2014 sh_error_message(status, errbuf, sizeof(errbuf)), _("dup"));
2015 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2016 }
2017
2018 sh_error_enable_unsafe (S_TRUE);
2019#if defined(HAVE_LIBPRELUDE)
2020 sh_prelude_reset ();
2021#endif
2022
2023 /* --- wait until parent has exited ---
2024 */
2025 while (1 == 1)
2026 {
2027 errno = 0;
2028 if (0 > aud_kill (FIL__, __LINE__, oldpid, 0) && errno == ESRCH)
2029 {
2030 break;
2031 }
2032 retry_msleep(0, 1);
2033 }
2034
2035 /* write PID file
2036 */
2037 status = sh_unix_write_pid_file();
2038 if (status < 0)
2039 {
2040 sl_get_euid(&uid);
2041 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_PIDFILE,
2042 (long) uid, sh.srvlog.alt);
2043 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2044 }
2045#if defined(SH_WITH_SERVER)
2046 sh_socket_open_int ();
2047#endif
2048 }
2049 else
2050 {
2051 sh_error_enable_unsafe (S_TRUE);
2052#if defined(HAVE_LIBPRELUDE)
2053 sh_prelude_reset ();
2054#endif
2055#if defined(SH_WITH_SERVER)
2056 sh_socket_open_int ();
2057#endif
2058 }
2059
2060 /* chroot (this is a no-op if no chroot dir is specified
2061 */
2062 status = sh_unix_chroot();
2063 if (status < 0)
2064 {
2065 status = errno;
2066 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2067 sh_error_message(status, errbuf, sizeof(errbuf)), _("chroot"));
2068 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2069 }
2070
2071 /* drop capabilities
2072 */
2073 sl_drop_cap();
2074
2075 SL_RETURN((0),_("sh_unix_init"));
2076}
2077
2078/* --- run a command, securely --- */
2079
2080int sh_unix_run_command (const char * str)
2081{
2082 pid_t pid;
2083 char * arg[4];
2084 char * env[5];
2085 char * path = sh_util_strdup(_("/bin/sh"));
2086
2087 int status = -1;
2088
2089 arg[0] = sh_util_strdup(_("/bin/sh"));
2090 arg[1] = sh_util_strdup(_("-c"));
2091 arg[2] = sh_util_strdup(str);
2092 arg[3] = NULL;
2093
2094 env[0] = sh_util_strdup(_("PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/ucb"));
2095 env[1] = sh_util_strdup(_("SHELL=/bin/sh"));
2096 env[2] = sh_util_strdup(_("IFS= \t\n"));
2097 if (getenv("TZ")) { /* flawfinder: ignore */
2098 char * tz = sh_util_strdup(getenv("TZ")); /* flawfinder: ignore */
2099 size_t tzlen = strlen(tz);
2100 if (SL_TRUE == sl_ok_adds (4, tzlen)) {
2101 env[3] = SH_ALLOC(4+tzlen);
2102 sl_strlcpy(env[3], "TZ=", 4);
2103 sl_strlcat(env[3], tz , 4+tzlen);
2104 } else {
2105 env[3] = NULL;
2106 }
2107 } else {
2108 env[3] = NULL;
2109 }
2110 env[4] = NULL;
2111
2112 pid = fork();
2113
2114 if (pid == (pid_t)(-1))
2115 {
2116 return -1;
2117 }
2118
2119 else if (pid == 0) /* child */
2120 {
2121 memset(skey, 0, sizeof(sh_key_t));
2122 (void) umask(S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
2123 sh_unix_closeall (3, -1, SL_TRUE); /* in child process */
2124 execve(path, arg, env);
2125 _exit(EXIT_FAILURE);
2126 }
2127
2128 else /* parent */
2129 {
2130 int r;
2131
2132 while((r = waitpid(pid, &status, WUNTRACED)) != pid && r != -1) ;
2133
2134#if !defined(USE_UNO)
2135 if (r == -1 || !WIFEXITED(status))
2136 {
2137 status = -1;
2138 }
2139 else
2140 {
2141 status = WEXITSTATUS(status);
2142 }
2143#endif
2144 }
2145
2146 return status;
2147}
2148
2149/********************************************************
2150 *
2151 * TIME
2152 *
2153 ********************************************************/
2154
2155/* Figure out the time offset of the current timezone
2156 * in a portable way.
2157 */
2158char * t_zone(const time_t * xx)
2159{
2160 struct tm aa;
2161 struct tm bb;
2162 struct tm * cc;
2163 int sign = 0;
2164 int diff = 0;
2165 int hh, mm;
2166 static char tz[64];
2167
2168 SL_ENTER(_("t_zone"));
2169
2170#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2171 cc = gmtime_r (xx, &aa);
2172#else
2173 cc = gmtime (xx);
2174 memcpy (&aa, cc, sizeof(struct tm));
2175#endif
2176
2177#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2178 cc = localtime_r (xx, &bb);
2179#else
2180 cc = localtime (xx);
2181 memcpy (&bb, cc, sizeof(struct tm));
2182#endif
2183
2184 /* Check for datum wrap-around.
2185 */
2186 if (aa.tm_year < bb.tm_year)
2187 sign = (-1);
2188 else if (aa.tm_mon < bb.tm_mon)
2189 sign = (-1);
2190 else if (aa.tm_mday < bb.tm_mday)
2191 sign = (-1);
2192 else if (bb.tm_year < aa.tm_year)
2193 sign = ( 1);
2194 else if (bb.tm_mon < aa.tm_mon)
2195 sign = ( 1);
2196 else if (bb.tm_mday < aa.tm_mday)
2197 sign = ( 1);
2198
2199 diff = aa.tm_hour * 60 + aa.tm_min;
2200 diff = (bb.tm_hour * 60 + bb.tm_min) - diff;
2201 diff = diff - (sign * 24 * 60); /* datum wrap-around correction */
2202 hh = diff / 60;
2203 mm = diff - (hh * 60);
2204 sprintf (tz, _("%+03d%02d"), hh, mm); /* known to fit */
2205
2206 SL_RETURN(tz, _("t_zone"));
2207}
2208
2209unsigned long sh_unix_longtime ()
2210{
2211 return ((unsigned long)time(NULL));
2212}
2213
2214#ifdef HAVE_GETTIMEOFDAY
2215unsigned long sh_unix_notime ()
2216{
2217 struct timeval tv;
2218
2219 gettimeofday (&tv, NULL);
2220
2221 return ((unsigned long)(tv.tv_sec + tv.tv_usec * 10835 + getpid() + getppid()));
2222
2223}
2224#endif
2225
2226static int count_dev_time = 0;
2227
2228void reset_count_dev_time(void)
2229{
2230 count_dev_time = 0;
2231 return;
2232}
2233
2234int sh_unix_settimeserver (const char * address)
2235{
2236
2237 SL_ENTER(_("sh_unix_settimeserver"));
2238
2239 if (address != NULL && count_dev_time < 2
2240 && sl_strlen(address) < SH_PATHBUF)
2241 {
2242 if (count_dev_time == 0)
2243 sl_strlcpy (sh.srvtime.name, address, SH_PATHBUF);
2244 else
2245 sl_strlcpy (sh.srvtime.alt, address, SH_PATHBUF);
2246
2247 ++count_dev_time;
2248 SL_RETURN((0), _("sh_unix_settimeserver"));
2249 }
2250 SL_RETURN((-1), _("sh_unix_settimeserver"));
2251}
2252
2253
2254#ifdef HAVE_NTIME
2255#define UNIXEPOCH 2208988800UL /* difference between Unix time and net time
2256 * The UNIX EPOCH starts in 1970.
2257 */
2258#include <sys/socket.h>
2259#include <netinet/in.h>
2260#include <arpa/inet.h>
2261#include <netdb.h>
2262#include <ctype.h>
2263#endif
2264
2265/* Timeserver service. */
2266/* define is missing on HP-UX 10.20 */
2267#ifndef IPPORT_TIMESERVER
2268#define IPPORT_TIMESERVER 37
2269#endif
2270
2271char * sh_unix_time (time_t thetime, char * buffer, size_t len)
2272{
2273
2274 int status;
2275 char AsciiTime[81]; /* local time */
2276 time_t time_now;
2277 struct tm * time_ptr;
2278#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2279 struct tm time_tm;
2280#endif
2281#ifdef SH_USE_XML
2282 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2283#else
2284 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2285#endif
2286
2287#ifdef HAVE_NTIME
2288 int fd; /* network file descriptor */
2289 u_char net_time[4]; /* remote time in network format */
2290 static int failerr = 0; /* no net time */
2291 int fail = 0; /* no net time */
2292 int errflag;
2293 char errmsg[256];
2294 char error_call[SH_MINIBUF];
2295 int error_num;
2296#endif
2297
2298 SL_ENTER(_("sh_unix_time"));
2299
2300#ifdef HAVE_NTIME
2301 if (thetime == 0)
2302 {
2303 if (sh.srvtime.name[0] == '\0')
2304 {
2305 fail = 1;
2306 (void) time (&time_now);
2307 }
2308 else /* have a timeserver address */
2309 {
2310 fd = connect_port_2 (sh.srvtime.name, sh.srvtime.alt,
2311 IPPORT_TIMESERVER,
2312 error_call, &error_num, errmsg, sizeof(errmsg));
2313 if (fd >= 0)
2314 {
2315 if (4 != read_port (fd, (char *) net_time, 4, &errflag, 2))
2316 {
2317 fail = 1;
2318 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2319 MSG_E_NLOST,
2320 _("time"), sh.srvtime.name);
2321 }
2322 sl_close_fd(FIL__, __LINE__, fd);
2323 }
2324 else
2325 {
2326 sh_error_handle ((-1), FIL__, __LINE__, error_num,
2327 MSG_E_NET, errmsg, error_call,
2328 _("time"), sh.srvtime.name);
2329 fail = 1;
2330 }
2331
2332 if (fail == 0)
2333 {
2334 unsigned long ltmp;
2335 UINT32 ttmp;
2336 memcpy(&ttmp, net_time, sizeof(UINT32)); ltmp = ttmp;
2337 time_now = ntohl(ltmp) - UNIXEPOCH;
2338 /* fprintf(stderr, "TIME IS %ld\n", time_now); */
2339 if (failerr == 1) {
2340 failerr = 0;
2341 sh_error_handle ((-1), FIL__, __LINE__, 0,
2342 MSG_E_NEST,
2343 _("time"), sh.srvtime.name);
2344 }
2345 }
2346 else
2347 {
2348 (void) time (&time_now);
2349 if (failerr == 0)
2350 {
2351 failerr = 1;
2352 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2353 MSG_SRV_FAIL,
2354 _("time"), sh.srvtime.name);
2355 }
2356 }
2357 }
2358 }
2359 else
2360 {
2361 time_now = thetime;
2362 }
2363
2364 /* #ifdef HAVE_NTIME */
2365#else
2366
2367 if (thetime == 0)
2368 {
2369 (void) time (&time_now);
2370 }
2371 else
2372 {
2373 time_now = thetime;
2374 }
2375
2376 /* #ifdef HAVE_NTIME */
2377#endif
2378
2379 if (time_now == (-1) )
2380 {
2381 sl_strlcpy(buffer, _(deftime), len);
2382 SL_RETURN(buffer, _("sh_unix_time"));
2383 }
2384 else
2385 {
2386#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2387 time_ptr = localtime_r (&time_now, &time_tm);
2388#else
2389 time_ptr = localtime (&time_now);
2390#endif
2391 }
2392 if (time_ptr != NULL)
2393 {
2394 status = strftime (AsciiTime, sizeof(AsciiTime),
2395#ifdef SH_USE_XML
2396 _("%Y-%m-%dT%H:%M:%S%%s"),
2397#else
2398 _("[%Y-%m-%dT%H:%M:%S%%s]"),
2399#endif
2400 time_ptr);
2401
2402 sl_snprintf(buffer, len, AsciiTime, t_zone(&time_now));
2403
2404 if ( (status == 0) || (status == sizeof(AsciiTime)) )
2405 {
2406 sl_strlcpy(buffer, _(deftime), len);
2407 SL_RETURN( buffer, _("sh_unix_time"));
2408 }
2409 else
2410 {
2411 SL_RETURN(buffer, _("sh_unix_time"));
2412 }
2413 }
2414
2415 /* last resort
2416 */
2417 sl_strlcpy(buffer, _(deftime), len);
2418 SL_RETURN( buffer, _("sh_unix_time"));
2419}
2420
2421static int sh_unix_use_localtime = S_FALSE;
2422
2423/* whether to use localtime for file timesatams in logs
2424 */
2425int sh_unix_uselocaltime (const char * c)
2426{
2427 int i;
2428 SL_ENTER(_("sh_unix_uselocaltime"));
2429 i = sh_util_flagval(c, &(sh_unix_use_localtime));
2430
2431 SL_RETURN(i, _("sh_unix_uselocaltime"));
2432}
2433
2434char * sh_unix_gmttime (time_t thetime, char * buffer, size_t len)
2435{
2436
2437 int status;
2438
2439 struct tm * time_ptr;
2440#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS)
2441 struct tm time_tm;
2442#endif
2443 char AsciiTime[81]; /* GMT time */
2444#ifdef SH_USE_XML
2445 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2446#else
2447 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2448#endif
2449
2450 SL_ENTER(_("sh_unix_gmttime"));
2451
2452 if (sh_unix_use_localtime == S_FALSE)
2453 {
2454#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2455 time_ptr = gmtime_r (&thetime, &time_tm);
2456#else
2457 time_ptr = gmtime (&thetime);
2458#endif
2459 }
2460 else
2461 {
2462#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2463 time_ptr = localtime_r (&thetime, &time_tm);
2464#else
2465 time_ptr = localtime (&thetime);
2466#endif
2467 }
2468 if (time_ptr != NULL)
2469 {
2470 status = strftime (AsciiTime, 80,
2471#ifdef SH_USE_XML
2472 _("%Y-%m-%dT%H:%M:%S"),
2473#else
2474 _("[%Y-%m-%dT%H:%M:%S]"),
2475#endif
2476 time_ptr);
2477
2478 if ( (status == 0) || (status == 80) )
2479 sl_strlcpy(buffer, _(deftime), len);
2480 else
2481 sl_strlcpy(buffer, AsciiTime, len);
2482 SL_RETURN( buffer, _("sh_unix_gmttime"));
2483 }
2484
2485 /* last resort
2486 */
2487 sl_strlcpy(buffer, _(deftime), len);
2488 SL_RETURN( buffer, _("sh_unix_gmttime"));
2489}
2490
2491
2492char * sh_unix_getUIDdir (int level, uid_t uid, char * out, size_t len)
2493{
2494 struct passwd * tempres;
2495 int status = 0;
2496
2497#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2498 struct passwd pwd;
2499 char * buffer;
2500#endif
2501 char errbuf[SH_ERRBUF_SIZE];
2502
2503 SL_ENTER(_("sh_unix_getUIDdir"));
2504
2505#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2506 buffer = SH_ALLOC(SH_PWBUF_SIZE);
2507 sh_getpwuid_r(uid, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
2508#else
2509 errno = 0;
2510 tempres = sh_getpwuid(uid);
2511 status = errno;
2512#endif
2513
2514 if (tempres == NULL) {
2515 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2516 sh_error_message(status, errbuf, sizeof(errbuf)),
2517 _("getpwuid"), (long) uid, _("completely missing"));
2518#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2519 SH_FREE(buffer);
2520#endif
2521 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2522 }
2523
2524 if (tempres->pw_dir != NULL) {
2525 sl_strlcpy(out, tempres->pw_dir, len);
2526#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2527 SH_FREE(buffer);
2528#endif
2529 SL_RETURN( out, _("sh_unix_getUIDdir"));
2530 } else {
2531 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2532 sh_error_message(status, errbuf, sizeof(errbuf)),
2533 _("getpwuid"), (long) uid, _("pw_dir"));
2534#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2535 SH_FREE(buffer);
2536#endif
2537 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2538 }
2539}
2540
2541/* ------------------- Caching ----------------*/
2542#include "zAVLTree.h"
2543
2544#define CACHE_GID 0
2545#define CACHE_UID 1
2546
2547struct user_id {
2548 char * name;
2549 uid_t id;
2550 struct user_id * next;
2551};
2552
2553static struct user_id * uid_list = NULL;
2554static struct user_id * gid_list = NULL;
2555
2556SH_MUTEX_STATIC(mutex_cache, PTHREAD_MUTEX_INITIALIZER);
2557
2558static void sh_userid_free(struct user_id * item)
2559{
2560 while (item)
2561 {
2562 struct user_id * user = item;
2563 item = item->next;
2564
2565 SH_FREE(user->name);
2566 SH_FREE(user);
2567 }
2568 return;
2569}
2570
2571void sh_userid_destroy ()
2572{
2573 struct user_id * tmp_uid;
2574 struct user_id * tmp_gid;
2575
2576 SH_MUTEX_LOCK_UNSAFE(mutex_cache);
2577 tmp_gid = gid_list;
2578 gid_list = NULL;
2579 tmp_uid = uid_list;
2580 uid_list = NULL;
2581 SH_MUTEX_UNLOCK_UNSAFE(mutex_cache);
2582
2583 sh_userid_free(tmp_uid);
2584 sh_userid_free(tmp_gid);
2585 return;
2586}
2587
2588static void sh_userid_additem(struct user_id * list, struct user_id * item)
2589{
2590 while (list && list->next)
2591 list = list->next;
2592 list->next = item;
2593 return;
2594}
2595
2596static void sh_userid_add(uid_t id, char * username, int which)
2597{
2598 size_t len;
2599 struct user_id * user = SH_ALLOC(sizeof(struct user_id));
2600
2601 if (username)
2602 len = strlen(username) + 1;
2603 else
2604 len = 1;
2605
2606 user->name = SH_ALLOC(len);
2607 user->id = id;
2608 if (username)
2609 sl_strlcpy(user->name, username, len);
2610 else
2611 user->name[0] = '\0';
2612 user->next = NULL;
2613
2614 SH_MUTEX_LOCK(mutex_cache);
2615 if (which == CACHE_UID)
2616 {
2617 if (!uid_list)
2618 uid_list = user;
2619 else
2620 sh_userid_additem(uid_list, user);
2621 }
2622 else
2623 {
2624 if (!gid_list)
2625 gid_list = user;
2626 else
2627 sh_userid_additem(gid_list, user);
2628 }
2629 SH_MUTEX_UNLOCK(mutex_cache);
2630
2631 return;
2632}
2633
2634static char * sh_userid_search(struct user_id * list, uid_t id)
2635{
2636 while (list)
2637 {
2638 if (list->id == id)
2639 return list->name;
2640 list = list->next;
2641 }
2642 return NULL;
2643}
2644
2645static char * sh_userid_get (uid_t id, int which, char * out, size_t len)
2646{
2647 char * user = NULL;
2648
2649 SH_MUTEX_LOCK_UNSAFE(mutex_cache);
2650 if (which == CACHE_UID)
2651 user = sh_userid_search(uid_list, id);
2652 else
2653 user = sh_userid_search(gid_list, id);
2654 if (user)
2655 {
2656 sl_strlcpy(out, user, len);
2657 user = out;
2658 }
2659 SH_MUTEX_UNLOCK_UNSAFE(mutex_cache);
2660
2661 return user;
2662}
2663
2664/* --------- end caching code --------- */
2665
2666char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len)
2667{
2668 struct passwd * tempres;
2669#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2670 struct passwd pwd;
2671 char * buffer;
2672#endif
2673 int status = 0;
2674 char errbuf[SH_ERRBUF_SIZE];
2675 char * tmp;
2676
2677 SL_ENTER(_("sh_unix_getUIDname"));
2678
2679 tmp = sh_userid_get(uid, CACHE_UID, out, len);
2680
2681 if (tmp)
2682 {
2683 if (tmp[0] != '\0')
2684 {
2685 SL_RETURN( out, _("sh_unix_getUIDname"));
2686 }
2687 else
2688 {
2689 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2690 }
2691 }
2692
2693#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2694 buffer = SH_ALLOC(SH_PWBUF_SIZE);
2695 sh_getpwuid_r(uid, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
2696#else
2697 errno = 0;
2698 tempres = sh_getpwuid(uid);
2699 status = errno;
2700#endif
2701
2702 if (tempres == NULL)
2703 {
2704 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2705 sh_error_message(status, errbuf, sizeof(errbuf)),
2706 _("getpwuid"), (long) uid, _("completely missing"));
2707#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2708 SH_FREE(buffer);
2709#endif
2710 sh_userid_add(uid, NULL, CACHE_UID);
2711 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2712 }
2713
2714
2715 if (tempres->pw_name != NULL)
2716 {
2717
2718 sl_strlcpy(out, tempres->pw_name, len);
2719 sh_userid_add(uid, out, CACHE_UID);
2720
2721#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2722 SH_FREE(buffer);
2723#endif
2724
2725 SL_RETURN( out, _("sh_unix_getUIDname"));
2726 }
2727 else
2728 {
2729 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2730 sh_error_message(status, errbuf, sizeof(errbuf)),
2731 _("getpwuid"), (long) uid, _("pw_user"));
2732#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2733 SH_FREE(buffer);
2734#endif
2735 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2736 }
2737 /* notreached */
2738}
2739
2740char * sh_unix_getGIDname (int level, gid_t gid, char * out, size_t len)
2741{
2742 struct group * tempres;
2743 int status = 0;
2744
2745#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2746 struct group grp;
2747 char * buffer;
2748#endif
2749 char errbuf[SH_ERRBUF_SIZE];
2750 char * tmp;
2751
2752 SL_ENTER(_("sh_unix_getGIDname"));
2753
2754 tmp = sh_userid_get((uid_t)gid, CACHE_GID, out, len);
2755
2756 if (tmp)
2757 {
2758 if (tmp[0] != '\0')
2759 {
2760 SL_RETURN( out, _("sh_unix_getGIDname"));
2761 }
2762 else
2763 {
2764 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2765 }
2766 }
2767
2768#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2769 buffer = SH_ALLOC(SH_GRBUF_SIZE);
2770 status = sh_getgrgid_r(gid, &grp, buffer, SH_GRBUF_SIZE, &tempres);
2771#else
2772 errno = 0;
2773 tempres = sh_getgrgid(gid);
2774 status = errno;
2775#endif
2776
2777 if (tempres == NULL)
2778 {
2779 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
2780 sh_error_message(status, errbuf, sizeof(errbuf)),
2781 _("getgrgid"), (long) gid, _("completely missing"));
2782
2783#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2784 SH_FREE(buffer);
2785#endif
2786
2787 sh_userid_add(gid, NULL, CACHE_GID);
2788 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2789 }
2790
2791 if (tempres->gr_name != NULL)
2792 {
2793
2794 sl_strlcpy(out, tempres->gr_name, len);
2795 sh_userid_add((uid_t)gid, out, CACHE_GID);
2796
2797#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2798 SH_FREE(buffer);
2799#endif
2800
2801 SL_RETURN( out, _("sh_unix_getGIDname"));
2802 }
2803 else
2804 {
2805 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
2806 sh_error_message(status, errbuf, sizeof(errbuf)),
2807 _("getgrgid"), (long) gid, _("gr_name"));
2808
2809#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2810 SH_FREE(buffer);
2811#endif
2812
2813 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2814 }
2815 /* notreached */
2816}
2817
2818int sh_unix_getUser ()
2819{
2820 char * p;
2821 uid_t seuid, sruid;
2822 char user[USER_MAX];
2823 char dir[SH_PATHBUF];
2824
2825 SL_ENTER(_("sh_unix_getUser"));
2826
2827 seuid = geteuid();
2828
2829 sh.effective.uid = seuid;
2830
2831 p = sh_unix_getUIDdir (SH_ERR_ERR, seuid, dir, sizeof(dir));
2832
2833 if (p == NULL)
2834 SL_RETURN((-1), _("sh_unix_getUser"));
2835 else
2836 {
2837 if (sl_strlen(p) >= SH_PATHBUF) {
2838 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2839 _("getpwuid"), (long) seuid, _("pw_home"));
2840 SL_RETURN((-1), _("sh_unix_getUser"));
2841 } else {
2842 sl_strlcpy ( sh.effective.home, p, SH_PATHBUF);
2843 }
2844 }
2845
2846 sruid = getuid();
2847
2848 sh.real.uid = sruid;
2849
2850 p = sh_unix_getUIDname (SH_ERR_ERR, sruid, user, sizeof(user));
2851 if (p == NULL)
2852 SL_RETURN((-1), _("sh_unix_getUser"));
2853 else
2854 {
2855 if (sl_strlen(p) >= USER_MAX) {
2856 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2857 _("getpwuid"), (long) sruid, _("pw_user"));
2858 SL_RETURN((-1), _("sh_unix_getUser"));
2859 } else {
2860 sl_strlcpy ( sh.real.user, p, USER_MAX);
2861 }
2862 }
2863
2864 p = sh_unix_getUIDdir (SH_ERR_ERR, sruid, dir, sizeof(dir));
2865
2866 if (p == NULL)
2867 SL_RETURN((-1), _("sh_unix_getUser"));
2868 else
2869 {
2870 if (sl_strlen(p) >= SH_PATHBUF) {
2871 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2872 _("getpwuid"), (long) sruid, _("pw_home"));
2873 SL_RETURN((-1), _("sh_unix_getUser"));
2874 } else {
2875 sl_strlcpy ( sh.real.home, p, SH_PATHBUF);
2876 }
2877 }
2878
2879 SL_RETURN((0), _("sh_unix_getUser"));
2880
2881 /* notreached */
2882}
2883
2884
2885int sh_unix_getline (SL_TICKET fd, char * line, int sizeofline)
2886{
2887 register int count;
2888 register int n = 0;
2889 char c;
2890
2891 SL_ENTER(_("sh_unix_getline"));
2892
2893 if (sizeofline < 2) {
2894 line[0] = '\0';
2895 SL_RETURN((0), _("sh_unix_getline"));
2896 }
2897
2898 --sizeofline;
2899
2900 while (n < sizeofline) {
2901
2902 count = sl_read (fd, &c, 1);
2903
2904 /* end of file
2905 */
2906 if (count < 1) {
2907 line[n] = '\0';
2908 n = -1;
2909 break;
2910 }
2911
2912 if (/* c != '\0' && */ c != '\n') {
2913 line[n] = c;
2914 ++n;
2915 } else if (c == '\n') {
2916 if (n > 0) {
2917 line[n] = '\0';
2918 break;
2919 } else {
2920 line[n] = '\n'; /* get newline only if only char on line */
2921 ++n;
2922 line[n] = '\0';
2923 break;
2924 }
2925 } else {
2926 line[n] = '\0';
2927 break;
2928 }
2929
2930 }
2931
2932
2933 line[sizeofline] = '\0'; /* make sure line is terminated */
2934 SL_RETURN((n), _("sh_unix_getline"));
2935}
2936
2937
2938#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
2939
2940/**************************************************************
2941 *
2942 * --- FILE INFO ---
2943 *
2944 **************************************************************/
2945
2946#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
2947
2948#if defined(__linux__)
2949
2950/* --- Determine ext2fs file attributes. ---
2951 */
2952#include <sys/ioctl.h>
2953#if defined(HAVE_EXT2FS_EXT2_FS_H)
2954#include <ext2fs/ext2_fs.h>
2955#else
2956#include <linux/ext2_fs.h>
2957#endif
2958
2959/* __linux__ includes */
2960#endif
2961
2962static
2963int sh_unix_getinfo_attr (char * name,
2964 unsigned long * flags,
2965 char * c_attr,
2966 int fd, struct stat * buf)
2967{
2968
2969/* TAKEN FROM:
2970 *
2971 * lsattr.c - List file attributes on an ext2 file system
2972 *
2973 * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
2974 * Laboratoire MASI, Institut Blaise Pascal
2975 * Universite Pierre et Marie Curie (Paris VI)
2976 *
2977 * This file can be redistributed under the terms of the GNU General
2978 * Public License
2979 */
2980
2981#ifdef HAVE_STAT_FLAGS
2982
2983 SL_ENTER(_("sh_unix_getinfo_attr"));
2984
2985 *flags = 0;
2986
2987 /* cast to void to avoid compiler warning about unused parameters */
2988 (void) fd;
2989 (void) name;
2990
2991#ifdef UF_NODUMP
2992 if (buf->st_flags & UF_NODUMP) {
2993 *flags |= UF_NODUMP;
2994 c_attr[0] = 'd';
2995 }
2996#endif
2997#ifdef UF_IMMUTABLE
2998 if (buf->st_flags & UF_IMMUTABLE) {
2999 *flags |= UF_IMMUTABLE;
3000 c_attr[1] = 'i';
3001 }
3002#endif
3003#ifdef UF_APPEND
3004 if (buf->st_flags & UF_APPEND) {
3005 *flags |= UF_APPEND;
3006 c_attr[2] = 'a';
3007 }
3008#endif
3009#ifdef UF_NOUNLINK
3010 if (buf->st_flags & UF_NOUNLINK) {
3011 *flags |= UF_NOUNLINK;
3012 c_attr[3] = 'u';
3013 }
3014#endif
3015#ifdef UF_OPAQUE
3016 if (buf->st_flags & UF_OPAQUE) {
3017 *flags |= UF_OPAQUE;
3018 c_attr[4] = 'o';
3019 }
3020#endif
3021#ifdef SF_ARCHIVED
3022 if (buf->st_flags & SF_ARCHIVED) {
3023 *flags |= SF_ARCHIVED;
3024 c_attr[5] = 'R';
3025 }
3026
3027#endif
3028#ifdef SF_IMMUTABLE
3029 if (buf->st_flags & SF_IMMUTABLE) {
3030 *flags |= SF_IMMUTABLE;
3031 c_attr[6] = 'I';
3032 }
3033#endif
3034#ifdef SF_APPEND
3035 if (buf->st_flags & SF_APPEND) {
3036 *flags |= SF_APPEND;
3037 c_attr[7] = 'A';
3038 }
3039#endif
3040#ifdef SF_NOUNLINK
3041 if (buf->st_flags & SF_NOUNLINK) {
3042 *flags |= SF_NOUNLINK;
3043 c_attr[8] = 'U';
3044 }
3045#endif
3046
3047 /* ! HAVE_STAT_FLAGS */
3048#else
3049
3050#ifdef HAVE_EXT2_IOCTLS
3051 int /* fd, */ r, f;
3052
3053 SL_ENTER(_("sh_unix_getinfo_attr"));
3054
3055 *flags = 0;
3056 (void) buf;
3057
3058 /* open() -> aud_open() R.Wichmann
3059 fd = aud_open (FIL__, __LINE__, SL_YESPRIV, name, O_RDONLY|O_NONBLOCK, 0);
3060 */
3061
3062 if (fd == -1 || name == NULL)
3063 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
3064
3065
3066 r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
3067 /* sl_close_fd (FIL__, __LINE__, fd); */
3068
3069 if (r == -1)
3070 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
3071
3072 if (f == 0)
3073 SL_RETURN(0, _("sh_unix_getinfo_attr"));
3074
3075 *flags = f;
3076
3077/* ! HAVE_EXT2_IOCTLS */
3078#else
3079
3080 SL_ENTER(_("sh_unix_getinfo_attr"));
3081
3082 *flags = 0; /* modified by R.Wichmann */
3083
3084/* ! HAVE_EXT2_IOCTLS */
3085#endif
3086/*
3087 * END
3088 *
3089 * lsattr.c - List file attributes on an ext2 file system
3090 */
3091
3092 if (*flags == 0)
3093 goto theend;
3094
3095#ifdef EXT2_SECRM_FL
3096 if ( (*flags & EXT2_SECRM_FL) != 0 ) c_attr[0] = 's';
3097#endif
3098#ifdef EXT2_UNRM_FL
3099 if ( (*flags & EXT2_UNRM_FL) != 0 ) c_attr[1] = 'u';
3100#endif
3101#ifdef EXT2_SYNC_FL
3102 if ( (*flags & EXT2_SYNC_FL) != 0 ) c_attr[2] = 'S';
3103#endif
3104#ifdef EXT2_IMMUTABLE_FL
3105 if ( (*flags & EXT2_IMMUTABLE_FL) != 0) c_attr[3] = 'i';
3106#endif
3107#ifdef EXT2_APPEND_FL
3108 if ( (*flags & EXT2_APPEND_FL) != 0 ) c_attr[4] = 'a';
3109#endif
3110#ifdef EXT2_NODUMP_FL
3111 if ( (*flags & EXT2_NODUMP_FL) != 0 ) c_attr[5] = 'd';
3112#endif
3113#ifdef EXT2_NOATIME_FL
3114 if ( (*flags & EXT2_NOATIME_FL) != 0) c_attr[6] = 'A';
3115#endif
3116#ifdef EXT2_COMPR_FL
3117 if ( (*flags & EXT2_COMPR_FL) != 0 ) c_attr[7] = 'c';
3118#endif
3119
3120#ifdef EXT2_TOPDIR_FL
3121 if ( (*flags & EXT2_TOPDIR_FL) != 0 ) c_attr[8] = 'T';
3122#endif
3123#ifdef EXT2_DIRSYNC_FL
3124 if ( (*flags & EXT2_DIRSYNC_FL) != 0 ) c_attr[9] = 'D';
3125#endif
3126#ifdef EXT2_NOTAIL_FL
3127 if ( (*flags & EXT2_NOTAIL_FL) != 0 ) c_attr[10] = 't';
3128#endif
3129#ifdef EXT2_JOURNAL_DATA_FL
3130 if ( (*flags & EXT2_JOURNAL_DATA_FL) != 0) c_attr[11] = 'j';
3131#endif
3132
3133 theend:
3134 /* ext2 */
3135#endif
3136
3137 c_attr[12] = '\0';
3138
3139 SL_RETURN(0, _("sh_unix_getinfo_attr"));
3140}
3141
3142/* defined(__linux__) || defined(HAVE_STAT_FLAGS) */
3143#endif
3144
3145/* determine file type
3146 */
3147static
3148int sh_unix_getinfo_type (struct stat * buf,
3149 ShFileType * type,
3150 char * c_mode)
3151{
3152 SL_ENTER(_("sh_unix_getinfo_type"));
3153
3154 if ( S_ISREG(buf->st_mode) ) {
3155 (*type) = SH_FILE_REGULAR;
3156 c_mode[0] = '-';
3157 }
3158 else if ( S_ISLNK(buf->st_mode) ) {
3159 (*type) = SH_FILE_SYMLINK;
3160 c_mode[0] = 'l';
3161 }
3162 else if ( S_ISDIR(buf->st_mode) ) {
3163 (*type) = SH_FILE_DIRECTORY;
3164 c_mode[0] = 'd';
3165 }
3166 else if ( S_ISCHR(buf->st_mode) ) {
3167 (*type) = SH_FILE_CDEV;
3168 c_mode[0] = 'c';
3169 }
3170 else if ( S_ISBLK(buf->st_mode) ) {
3171 (*type) = SH_FILE_BDEV;
3172 c_mode[0] = 'b';
3173 }
3174 else if ( S_ISFIFO(buf->st_mode) ) {
3175 (*type) = SH_FILE_FIFO;
3176 c_mode[0] = '|';
3177 }
3178 else if ( S_ISSOCK(buf->st_mode) ) {
3179 (*type) = SH_FILE_SOCKET;
3180 c_mode[0] = 's';
3181 }
3182 else if ( S_ISDOOR(buf->st_mode) ) {
3183 (*type) = SH_FILE_DOOR;
3184 c_mode[0] = 'D';
3185 }
3186 else if ( S_ISPORT(buf->st_mode) ) {
3187 (*type) = SH_FILE_PORT;
3188 c_mode[0] = 'P';
3189 }
3190 else {
3191 (*type) = SH_FILE_UNKNOWN;
3192 c_mode[0] = '?';
3193 }
3194
3195 SL_RETURN(0, _("sh_unix_getinfo_type"));
3196}
3197
3198int sh_unix_get_ftype(char * fullpath)
3199{
3200 char c_mode[CMODE_SIZE];
3201 struct stat buf;
3202 ShFileType type;
3203 int res;
3204
3205 SL_ENTER(_("sh_unix_get_ftype"));
3206
3207 res = retry_lstat(FIL__, __LINE__, fullpath, &buf);
3208
3209 if (res < 0)
3210 SL_RETURN(SH_FILE_UNKNOWN, _("sh_unix_getinfo_type"));
3211
3212 sh_unix_getinfo_type (&buf, &type, c_mode);
3213
3214 SL_RETURN(type, _("sh_unix_get_ftype"));
3215}
3216
3217
3218static
3219int sh_unix_getinfo_mode (struct stat *buf,
3220 unsigned int * mode,
3221 char * c_mode)
3222{
3223
3224 SL_ENTER(_("sh_unix_getinfo_mode"));
3225
3226 (*mode) = buf->st_mode;
3227
3228 /* make 'ls'-like string */
3229
3230 if ( (buf->st_mode & S_IRUSR) != 0 ) c_mode[1] = 'r';
3231 if ( (buf->st_mode & S_IWUSR) != 0 ) c_mode[2] = 'w';
3232 if ( (buf->st_mode & S_IXUSR) != 0 ) {
3233 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 's';
3234 else c_mode[3] = 'x';
3235 } else {
3236 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 'S';
3237 }
3238
3239 if ( (buf->st_mode & S_IRGRP) != 0 ) c_mode[4] = 'r';
3240 if ( (buf->st_mode & S_IWGRP) != 0 ) c_mode[5] = 'w';
3241 if ( (buf->st_mode & S_IXGRP) != 0 ) {
3242 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 's';
3243 else c_mode[6] = 'x';
3244 } else {
3245 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 'S';
3246 }
3247
3248 if ( (buf->st_mode & S_IROTH) != 0 ) c_mode[7] = 'r';
3249 if ( (buf->st_mode & S_IWOTH) != 0 ) c_mode[8] = 'w';
3250#ifdef S_ISVTX /* not POSIX */
3251 if ( (buf->st_mode & S_IXOTH) != 0 ) {
3252 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 't';
3253 else c_mode[9] = 'x';
3254 } else {
3255 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 'T';
3256 }
3257#else
3258 if ( (buf->st_mode & S_IXOTH) != 0 ) c_mode[9] = 'x';
3259#endif
3260
3261 SL_RETURN(0, _("sh_unix_getinfo_mode"));
3262}
3263
3264
3265long IO_Limit = 0;
3266
3267void sh_unix_io_pause ()
3268{
3269 long runtime;
3270 float someval;
3271 unsigned long sometime;
3272
3273 if (IO_Limit == 0)
3274 {
3275 return;
3276 }
3277 else
3278 {
3279 runtime = (long) (time(NULL) - sh.statistics.time_start);
3280
3281 if (runtime > 0 && (long)(sh.statistics.bytes_hashed/runtime) > IO_Limit)
3282 {
3283 someval = sh.statistics.bytes_hashed - (IO_Limit * runtime);
3284 someval /= (float) IO_Limit;
3285 if (someval < 1.0)
3286 {
3287 someval *= 1000; /* milliseconds in a second */
3288 sometime = (unsigned long) someval;
3289 retry_msleep(0, sometime);
3290 }
3291 else
3292 {
3293 sometime = (unsigned long) someval;
3294 retry_msleep (sometime, 0);
3295 }
3296 }
3297 }
3298 return;
3299}
3300
3301int sh_unix_set_io_limit (const char * c)
3302{
3303 long val;
3304
3305 SL_ENTER(_("sh_unix_set_io_limit"));
3306
3307 val = strtol (c, (char **)NULL, 10);
3308 if (val < 0)
3309 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
3310 _("set I/O limit"), c);
3311
3312 val = (val < 0 ? 0 : val);
3313
3314 IO_Limit = val * 1024;
3315 SL_RETURN( 0, _("sh_unix_set_io_limit"));
3316}
3317
3318/* obtain file info
3319 */
3320extern int flag_err_debug;
3321
3322#include "sh_ignore.h"
3323
3324int sh_unix_checksum_size (char * filename, struct stat * fbuf,
3325 char * fileHash, int alert_timeout, SL_TICKET fd)
3326{
3327 file_type * tmpFile;
3328 int status;
3329
3330 SL_ENTER(_("sh_unix_checksum_size"));
3331
3332 tmpFile = SH_ALLOC(sizeof(file_type));
3333 tmpFile->link_path = NULL;
3334
3335 if (sh.flag.checkSum != SH_CHECK_INIT)
3336 {
3337 /* lookup file in database */
3338 status = sh_hash_get_it (filename, tmpFile);
3339 if (status != 0) {
3340 goto out;
3341 }
3342 }
3343 else
3344 {
3345 tmpFile->size = fbuf->st_size;
3346 }
3347
3348 /* if last < current get checksum */
3349 if (tmpFile->size < fbuf->st_size)
3350 {
3351 char hashbuf[KEYBUF_SIZE];
3352 UINT64 local_length = (UINT64) (tmpFile->size < 0 ? 0 : tmpFile->size);
3353 sl_strlcpy(fileHash,
3354 sh_tiger_generic_hash (filename, fd, &(local_length),
3355 alert_timeout, hashbuf, sizeof(hashbuf)),
3356 KEY_LEN+1);
3357
3358 /* return */
3359 if (tmpFile->link_path) SH_FREE(tmpFile->link_path);
3360 SH_FREE(tmpFile);
3361 SL_RETURN( 0, _("sh_unix_checksum_size"));
3362 }
3363
3364 out:
3365 if (tmpFile->link_path) SH_FREE(tmpFile->link_path);
3366 SH_FREE(tmpFile);
3367 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3368 SL_RETURN( -1, _("sh_unix_checksum_size"));
3369}
3370
3371int sh_unix_check_selinux = S_FALSE;
3372int sh_unix_check_acl = S_FALSE;
3373
3374#ifdef USE_ACL
3375
3376#include <sys/acl.h>
3377static char * sh_unix_getinfo_acl (char * path, int fd, struct stat * buf)
3378{
3379 /* system.posix_acl_access, system.posix_acl_default
3380 */
3381 char * out = NULL;
3382 char * collect = NULL;
3383 char * tmp;
3384 char * out_compact;
3385 ssize_t len;
3386 acl_t result;
3387
3388 SL_ENTER(_("sh_unix_getinfo_acl"));
3389
3390 result = (fd == -1) ?
3391 acl_get_file (path, ACL_TYPE_ACCESS) :
3392 acl_get_fd (fd);
3393
3394 if (result)
3395 {
3396 out = acl_to_text (result, &len);
3397 if (out && (len > 0)) {
3398 out_compact = sh_util_acl_compact (out, len);
3399 acl_free(out);
3400 if (out_compact)
3401 {
3402 collect = sh_util_strconcat (_("acl_access:"), out_compact, NULL);
3403 SH_FREE(out_compact);
3404 }
3405 }
3406 acl_free(result);
3407 }
3408
3409
3410 if ( S_ISDIR(buf->st_mode) )
3411 {
3412 result = acl_get_file (path, ACL_TYPE_DEFAULT);
3413
3414 if (result)
3415 {
3416 out = acl_to_text (result, &len);
3417 if (out && (len > 0)) {
3418 out_compact = sh_util_acl_compact (out, len);
3419 acl_free(out);
3420 if (out_compact) {
3421 if (collect) {
3422 tmp = sh_util_strconcat (_("acl_default:"),
3423 out_compact, ":", collect, NULL);
3424 SH_FREE(collect);
3425 }
3426 else {
3427 tmp = sh_util_strconcat (_("acl_default:"), out_compact, NULL);
3428 }
3429 SH_FREE(out_compact);
3430 collect = tmp;
3431 }
3432 }
3433 acl_free(result);
3434 }
3435 }
3436
3437 SL_RETURN((collect),_("sh_unix_getinfo_acl"));
3438}
3439#endif
3440
3441#ifdef USE_XATTR
3442
3443#include <attr/xattr.h>
3444static char * sh_unix_getinfo_xattr_int (char * path, int fd, char * name)
3445{
3446 char * out = NULL;
3447 char * tmp = NULL;
3448 size_t size = 256;
3449 ssize_t result;
3450
3451 SL_ENTER(_("sh_unix_getinfo_xattr_int"));
3452
3453 out = SH_ALLOC(size);
3454
3455 result = (fd == -1) ?
3456 lgetxattr (path, name, out, size-1) :
3457 fgetxattr (fd, name, out, size-1);
3458
3459 if (result == -1 && errno == ERANGE)
3460 {
3461 SH_FREE(out);
3462 result = (fd == -1) ?
3463 lgetxattr (path, name, NULL, 0) :
3464 fgetxattr (fd, name, NULL, 0);
3465 size = result + 1;
3466 out = SH_ALLOC(size);
3467 result = (fd == -1) ?
3468 lgetxattr (path, name, out, size-1) :
3469 fgetxattr (fd, name, out, size-1);
3470 }
3471
3472 if ((result > 0) && ((size_t)result < size))
3473 {
3474 out[size-1] = '\0';
3475 tmp = out;
3476 }
3477 else
3478 {
3479 SH_FREE(out);
3480 }
3481
3482 SL_RETURN((tmp),_("sh_unix_getinfo_xattr_int"));
3483}
3484
3485
3486static char * sh_unix_getinfo_xattr (char * path, int fd, struct stat * buf)
3487{
3488 /* system.posix_acl_access, system.posix_acl_default, security.selinux
3489 */
3490 char * tmp;
3491 char * out = NULL;
3492 char * collect = NULL;
3493
3494 SL_ENTER(_("sh_unix_getinfo_xattr"));
3495
3496#ifdef USE_ACL
3497 /*
3498 * we need the acl_get_fd/acl_get_file functions, getxattr will only
3499 * yield the raw bytes
3500 */
3501 if (sh_unix_check_acl == S_TRUE)
3502 {
3503 out = sh_unix_getinfo_acl(path, fd, buf);
3504
3505 if (out)
3506 {
3507 collect = out;
3508 }
3509 }
3510#else
3511 (void) buf;
3512#endif
3513
3514 if (sh_unix_check_selinux == S_TRUE)
3515 {
3516 out = sh_unix_getinfo_xattr_int(path, fd, _("security.selinux"));
3517
3518 if (out)
3519 {
3520 if (collect) {
3521 tmp = sh_util_strconcat(_("selinux:"), out, ":", collect, NULL);
3522 SH_FREE(collect);
3523 }
3524 else {
3525 tmp = sh_util_strconcat(_("selinux:"), out, NULL);
3526 }
3527 SH_FREE(out);
3528 collect = tmp;
3529 }
3530 }
3531
3532 SL_RETURN((collect),_("sh_unix_getinfo_xattr"));
3533}
3534#endif
3535
3536#ifdef USE_XATTR
3537int sh_unix_setcheckselinux (const char * c)
3538{
3539 int i;
3540 SL_ENTER(_("sh_unix_setcheckselinux"));
3541 i = sh_util_flagval(c, &(sh_unix_check_selinux));
3542
3543 SL_RETURN(i, _("sh_unix_setcheckselinux"));
3544}
3545#endif
3546
3547#ifdef USE_ACL
3548int sh_unix_setcheckacl (const char * c)
3549{
3550 int i;
3551 SL_ENTER(_("sh_unix_setcheckacl"));
3552 i = sh_util_flagval(c, &(sh_unix_check_acl));
3553
3554 SL_RETURN(i, _("sh_unix_setcheckacl"));
3555}
3556#endif
3557
3558#ifdef HAVE_LIBZ
3559#include <zlib.h>
3560#endif
3561
3562int sh_unix_getinfo (int level, char * filename, file_type * theFile,
3563 char * fileHash, int policy)
3564{
3565 char timestr[81];
3566 long runtim;
3567 struct stat buf;
3568 struct stat lbuf;
3569 struct stat fbuf;
3570 int stat_return;
3571 int stat_errno = 0;
3572
3573 ShFileType type;
3574 unsigned int mode;
3575 char * tmp;
3576 char * tmp2;
3577
3578 char * linknamebuf;
3579 int linksize;
3580
3581 extern int get_the_fd (SL_TICKET ticket);
3582
3583 SL_TICKET rval_open;
3584 int err_open = 0;
3585
3586 int fd;
3587 int fstat_return;
3588 int fstat_errno = 0;
3589 int try = 0;
3590
3591 sh_string * content = NULL;
3592
3593 time_t tend;
3594 time_t tstart;
3595
3596
3597 char * path = NULL;
3598
3599 int alert_timeout = 120;
3600
3601 path = theFile->fullpath;
3602
3603 SL_ENTER(_("sh_unix_getinfo"));
3604
3605 /* --- Stat the file, and get checksum. ---
3606 */
3607 tstart = time(NULL);
3608
3609 stat_return = retry_lstat (FIL__, __LINE__,
3610 path /* theFile->fullpath */, &buf);
3611
3612 if (stat_return)
3613 stat_errno = errno;
3614
3615 theFile->link_path = NULL;
3616
3617 try_again:
3618
3619 fd = -1;
3620 fstat_return = -1;
3621 rval_open = -1;
3622
3623 if (stat_return == 0 && S_ISREG(buf.st_mode))
3624 {
3625 rval_open = sl_open_fastread (FIL__, __LINE__,
3626 path /* theFile->fullpath */, SL_YESPRIV);
3627 if (SL_ISERROR(rval_open))
3628 {
3629 char * stale = sl_check_stale();
3630
3631 if (stale)
3632 {
3633 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, err_open, MSG_E_SUBGEN,
3634 stale, _("sh_unix_getinfo_open"));
3635 }
3636
3637 if (errno == EBADF && try == 0) /* obsolete, but we keep this, just in case */
3638 {
3639 ++try;
3640 goto try_again;
3641 }
3642 err_open = errno;
3643 }
3644
3645 alert_timeout = 120; /* this is per 8K block now ! */
3646
3647 if (path[1] == 'p' && path[5] == '/' && path[2] == 'r' &&
3648 path[3] == 'o' && path[4] == 'c' && path[0] == '/')
3649 {
3650 /* seven is magic */
3651 alert_timeout = 7;
3652 }
3653
3654 fd = get_the_fd(rval_open);
3655 }
3656
3657 tend = time(NULL);
3658
3659 /* An unprivileged user may slow lstat/open to a crawl
3660 * with clever path/symlink setup
3661 */
3662 if ((tend - tstart) > (time_t) /* 60 */ 6)
3663 {
3664 tmp2 = sh_util_safe_name (theFile->fullpath);
3665 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_TOOLATE,
3666 (long)(tend - tstart), tmp2);
3667 SH_FREE(tmp2);
3668 }
3669
3670 if (fd >= 0)
3671 {
3672 fstat_return = retry_fstat (FIL__, __LINE__, fd, &fbuf);
3673
3674 if (fstat_return)
3675 {
3676 char * stale;
3677
3678 fstat_errno = errno;
3679
3680 stale = sl_check_stale();
3681
3682 if (stale)
3683 {
3684 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, fstat_errno,
3685 MSG_E_SUBGEN,
3686 stale, _("sh_unix_getinfo_fstat"));
3687 }
3688
3689 if (try == 0) /* obsolete, but we keep this, just in case */
3690 {
3691 ++try;
3692 sl_close(rval_open);
3693 goto try_again;
3694 }
3695 }
3696 }
3697 else
3698 {
3699 fd = -1;
3700 }
3701
3702
3703 /* --- case 1: lstat failed ---
3704 */
3705 if (stat_return != 0)
3706 {
3707 stat_return = errno;
3708 if (!SL_ISERROR(rval_open))
3709 sl_close(rval_open);
3710 if (sh.flag.checkSum == SH_CHECK_INIT ||
3711 (sh_hash_have_it (theFile->fullpath) >= 0 &&
3712 (!SH_FFLAG_REPORTED_SET(theFile->file_reported))))
3713 {
3714 if (S_FALSE == sh_ignore_chk_del(theFile->fullpath)) {
3715 char errbuf[SH_ERRBUF_SIZE];
3716 uid_t euid;
3717 (void) sl_get_euid(&euid);
3718 tmp2 = sh_util_safe_name (theFile->fullpath);
3719 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_STAT,
3720 _("lstat"),
3721 sh_error_message (stat_errno, errbuf, sizeof(errbuf)),
3722 (long) euid,
3723 tmp2);
3724 SH_FREE(tmp2);
3725 }
3726 }
3727 SL_RETURN((-1),_("sh_unix_getinfo"));
3728 }
3729
3730 /* --- case 2: not a regular file ---
3731 */
3732 else if (! S_ISREG(buf.st_mode))
3733 {
3734 if (fileHash != NULL)
3735 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3736 }
3737
3738 /* --- case 3a: a regular file, fstat ok ---
3739 */
3740 else if (fstat_return == 0 &&
3741 buf.st_mode == fbuf.st_mode &&
3742 buf.st_ino == fbuf.st_ino &&
3743 buf.st_uid == fbuf.st_uid &&
3744 buf.st_gid == fbuf.st_gid &&
3745 buf.st_dev == fbuf.st_dev )
3746 {
3747 if (fileHash != NULL)
3748 {
3749 if ((theFile->check_mask & MODI_CHK) == 0)
3750 {
3751 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3752 }
3753 else if ((theFile->check_mask & MODI_PREL) != 0 &&
3754 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
3755 alert_timeout, theFile->fullpath))
3756 {
3757 if (0 != sh_prelink_run (theFile->fullpath,
3758 fileHash, alert_timeout))
3759 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3760 }
3761 else
3762 {
3763 char hashbuf[KEYBUF_SIZE];
3764 UINT64 length_nolim = TIGER_NOLIM;
3765
3766 if (MODI_TXT_ENABLED(theFile->check_mask) && fbuf.st_size < (10 * SH_TXT_MAX))
3767 {
3768 sl_init_content (rval_open, fbuf.st_size);
3769 }
3770
3771 sl_strlcpy(fileHash,
3772 sh_tiger_generic_hash (theFile->fullpath,
3773 rval_open, &length_nolim,
3774 alert_timeout,
3775 hashbuf, sizeof(hashbuf)),
3776 KEY_LEN+1);
3777
3778 content = sl_get_content(rval_open);
3779 content = sh_string_copy(content);
3780
3781 if ((theFile->check_mask & MODI_SGROW) != 0)
3782 {
3783 fbuf.st_size = (off_t) length_nolim;
3784 buf.st_size = fbuf.st_size;
3785 sl_rewind(rval_open);
3786 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3787 &fileHash[KEY_LEN + 1],
3788 alert_timeout, rval_open);
3789 }
3790 }
3791 }
3792 }
3793
3794 /* --- case 3b: a regular file, fstat ok, but different ---
3795 */
3796 else if (fstat_return == 0 && S_ISREG(fbuf.st_mode))
3797 {
3798 memcpy (&buf, &fbuf, sizeof( struct stat ));
3799
3800 if (fileHash != NULL)
3801 {
3802 if ((theFile->check_mask & MODI_CHK) == 0)
3803 {
3804 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3805 }
3806 else if (policy == SH_LEVEL_PRELINK &&
3807 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
3808 alert_timeout, theFile->fullpath))
3809 {
3810 if (0 != sh_prelink_run (theFile->fullpath,
3811 fileHash, alert_timeout))
3812 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3813 }
3814 else
3815 {
3816 char hashbuf[KEYBUF_SIZE];
3817 UINT64 length_nolim = TIGER_NOLIM;
3818
3819 if (MODI_TXT_ENABLED(theFile->check_mask) && fbuf.st_size < (10 * SH_TXT_MAX))
3820 {
3821 sl_init_content (rval_open, fbuf.st_size);
3822 }
3823
3824 sl_strlcpy(fileHash,
3825 sh_tiger_generic_hash (theFile->fullpath, rval_open,
3826 &length_nolim,
3827 alert_timeout,
3828 hashbuf, sizeof(hashbuf)),
3829 KEY_LEN + 1);
3830
3831 content = sl_get_content(rval_open);
3832 content = sh_string_copy(content);
3833
3834 if ((theFile->check_mask & MODI_SGROW) != 0)
3835 {
3836 fbuf.st_size = (off_t) length_nolim;
3837 buf.st_size = fbuf.st_size;
3838 sl_rewind(rval_open);
3839 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3840 &fileHash[KEY_LEN + 1],
3841 alert_timeout, rval_open);
3842 }
3843 }
3844 }
3845 }
3846
3847 /* --- case 4: a regular file, fstat failed ---
3848 */
3849
3850 else /* fstat_return != 0 or !S_ISREG(fbuf.st_mode) or open() failed */
3851 {
3852 uid_t euid;
3853
3854 if (fileHash != NULL)
3855 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3856
3857 if ((theFile->check_mask & MODI_CHK) != 0)
3858 {
3859 tmp2 = sh_util_safe_name (theFile->fullpath);
3860
3861
3862 if (fd >= 0 && fstat_return != 0)
3863 {
3864 char errbuf[SH_ERRBUF_SIZE];
3865 (void) sl_get_euid(&euid);
3866
3867 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_STAT,
3868 _("fstat"),
3869 sh_error_message (fstat_errno, errbuf, sizeof(errbuf)),
3870 (long) euid,
3871 tmp2);
3872 }
3873 else if (fd >= 0 && !S_ISREG(fbuf.st_mode))
3874 {
3875 sh_error_handle (level, FIL__, __LINE__, fstat_errno,
3876 MSG_E_NOTREG, tmp2);
3877 }
3878 else
3879 {
3880 char errbuf[SH_ERRBUF_SIZE];
3881 char errbuf2[SH_ERRBUF_SIZE];
3882 sl_strlcpy(errbuf, sl_error_string(rval_open), sizeof(errbuf));
3883 sh_error_message(err_open, errbuf2, sizeof(errbuf2));
3884 sh_error_handle (level, FIL__, __LINE__, err_open,
3885 MSG_E_READ, errbuf, errbuf2, tmp2);
3886 }
3887 SH_FREE(tmp2);
3888 }
3889 }
3890
3891
3892 /* --- Determine file type. ---
3893 */
3894 memset (theFile->c_mode, '-', CMODE_SIZE-1);
3895 theFile->c_mode[CMODE_SIZE-1] = '\0';
3896
3897 memset (theFile->link_c_mode, '-', CMODE_SIZE-1);
3898 theFile->link_c_mode[CMODE_SIZE-1] = '\0';
3899
3900 sh_unix_getinfo_type (&buf, &type, theFile->c_mode);
3901 theFile->type = type;
3902
3903#if defined(__linux__) || defined(HAVE_STAT_FLAGS)
3904
3905 /* --- Determine file attributes. ---
3906 */
3907 memset (theFile->c_attributes, '-', ATTRBUF_SIZE);
3908 theFile->c_attributes[ATTRBUF_USED] = '\0';
3909 theFile->attributes = 0;
3910
3911#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
3912 if (theFile->c_mode[0] != 'c' && theFile->c_mode[0] != 'b' &&
3913 theFile->c_mode[0] != 'l' )
3914 sh_unix_getinfo_attr(theFile->fullpath,
3915 &theFile->attributes, theFile->c_attributes,
3916 fd, &buf);
3917#endif
3918#endif
3919
3920#if defined(USE_XATTR) && defined(USE_ACL)
3921 if (sh_unix_check_selinux == S_TRUE || sh_unix_check_acl == S_TRUE)
3922 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3923#elif defined(USE_XATTR)
3924 if (sh_unix_check_selinux == S_TRUE)
3925 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3926#elif defined(USE_ACL)
3927 if (sh_unix_check_acl == S_TRUE)
3928 theFile->attr_string = sh_unix_getinfo_acl (theFile->fullpath, fd, &buf);
3929#else
3930 theFile->attr_string = NULL;
3931#endif
3932
3933 if (!SL_ISERROR(rval_open))
3934 sl_close(rval_open);
3935
3936
3937 /* --- I/O limit. ---
3938 */
3939 if (IO_Limit > 0)
3940 {
3941 runtim = (long) (time(NULL) - sh.statistics.time_start);
3942
3943 if (runtim > 0 && (long)(sh.statistics.bytes_hashed/runtim) > IO_Limit)
3944 retry_msleep(1, 0);
3945 }
3946
3947 /* --- Determine permissions. ---
3948 */
3949 sh_unix_getinfo_mode (&buf, &mode, theFile->c_mode);
3950
3951 /* --- Trivia. ---
3952 */
3953 theFile->dev = buf.st_dev;
3954 theFile->ino = buf.st_ino;
3955 theFile->mode = buf.st_mode;
3956 theFile->hardlinks = buf.st_nlink;
3957 theFile->owner = buf.st_uid;
3958 theFile->group = buf.st_gid;
3959 theFile->rdev = buf.st_rdev;
3960 theFile->size = buf.st_size;
3961 theFile->blksize = (unsigned long) buf.st_blksize;
3962 theFile->blocks = (unsigned long) buf.st_blocks;
3963 theFile->atime = buf.st_atime;
3964 theFile->mtime = buf.st_mtime;
3965 theFile->ctime = buf.st_ctime;
3966
3967
3968 /* --- Owner and group. ---
3969 */
3970
3971 if (NULL == sh_unix_getGIDname(SH_ERR_ALL, buf.st_gid, theFile->c_group, GROUP_MAX+1)) {
3972
3973 tmp2 = sh_util_safe_name (theFile->fullpath);
3974
3975 if (policy == SH_LEVEL_ALLIGNORE)
3976 {
3977 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
3978 MSG_FI_NOGRP,
3979 (long) buf.st_gid, tmp2);
3980 }
3981 else
3982 {
3983 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
3984 MSG_FI_NOGRP,
3985 (long) buf.st_gid, tmp2);
3986 }
3987 SH_FREE(tmp2);
3988 sl_snprintf(theFile->c_group, GROUP_MAX+1, "%d", (long) buf.st_gid);
3989 }
3990
3991
3992 if (NULL == sh_unix_getUIDname(SH_ERR_ALL, buf.st_uid, theFile->c_owner, USER_MAX+1)) {
3993
3994 tmp2 = sh_util_safe_name (theFile->fullpath);
3995
3996 if (policy == SH_LEVEL_ALLIGNORE)
3997 {
3998 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
3999 MSG_FI_NOUSR,
4000 (long) buf.st_uid, tmp2);
4001 }
4002 else
4003 {
4004 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
4005 MSG_FI_NOUSR,
4006 (long) buf.st_uid, tmp2);
4007 }
4008 SH_FREE(tmp2);
4009 sl_snprintf(theFile->c_owner, USER_MAX+1, "%d", (long) buf.st_uid);
4010 }
4011
4012 /* --- Output the file. ---
4013 */
4014 if (flag_err_debug == SL_TRUE)
4015 {
4016 tmp2 = sh_util_safe_name ((filename == NULL) ?
4017 theFile->fullpath : filename);
4018 (void) sh_unix_time(theFile->mtime, timestr, sizeof(timestr));
4019 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LIST,
4020 theFile->c_mode,
4021 theFile->hardlinks,
4022 theFile->c_owner,
4023 theFile->c_group,
4024 (unsigned long) theFile->size,
4025 timestr,
4026 tmp2);
4027 SH_FREE(tmp2);
4028 }
4029
4030 /* --- Check for links. ---
4031 */
4032 if (theFile->c_mode[0] == 'l')
4033 {
4034 linknamebuf = SH_ALLOC(PATH_MAX);
4035
4036 /* flawfinder: ignore */
4037 linksize = readlink (theFile->fullpath, linknamebuf, PATH_MAX-1);
4038
4039 if (linksize < (PATH_MAX-1) && linksize >= 0)
4040 linknamebuf[linksize] = '\0';
4041 else
4042 linknamebuf[PATH_MAX-1] = '\0';
4043
4044 if (linksize < 0)
4045 {
4046 char errbuf[SH_ERRBUF_SIZE];
4047 linksize = errno;
4048 tmp2 = sh_util_safe_name (theFile->fullpath);
4049 sh_error_handle (level, FIL__, __LINE__, linksize, MSG_FI_RDLNK,
4050 sh_error_message (linksize, errbuf, sizeof(errbuf)), tmp2);
4051 SH_FREE(tmp2);
4052 SH_FREE(linknamebuf);
4053 theFile->link_path = sh_util_strdup("-");
4054 SL_RETURN((-1),_("sh_unix_getinfo"));
4055 }
4056
4057 if (linknamebuf[0] == '/')
4058 {
4059 theFile->link_path = sh_util_strdup (linknamebuf);
4060 }
4061 else
4062 {
4063 tmp = sh_util_dirname(theFile->fullpath);
4064 if (tmp) {
4065 theFile->link_path = SH_ALLOC(PATH_MAX);
4066 sl_strlcpy (theFile->link_path, tmp, PATH_MAX);
4067 SH_FREE(tmp);
4068 } else {
4069 theFile->link_path = SH_ALLOC(PATH_MAX);
4070 theFile->link_path[0] = '\0';
4071 }
4072 /*
4073 * Only attach '/' if not root directory. Handle "//", which
4074 * according to POSIX is implementation-defined, and may be
4075 * different from "/" (however, three or more '/' will collapse
4076 * to one).
4077 */
4078 tmp = theFile->link_path; while (*tmp == '/') ++tmp;
4079 if (*tmp != '\0')
4080 {
4081 sl_strlcat (theFile->link_path, "/", PATH_MAX);
4082 }
4083 sl_strlcat (theFile->link_path, linknamebuf, PATH_MAX);
4084 }
4085
4086 /* stat the link
4087 */
4088 stat_return = retry_lstat (FIL__, __LINE__, theFile->link_path, &lbuf);
4089
4090 /* check for error
4091 */
4092 if (stat_return != 0)
4093 {
4094 stat_return = errno;
4095 tmp = sh_util_safe_name (theFile->fullpath);
4096 tmp2 = sh_util_safe_name (theFile->link_path);
4097 if (stat_return != ENOENT)
4098 {
4099 uid_t euid;
4100 char errbuf[SH_ERRBUF_SIZE];
4101
4102 (void) sl_get_euid(&euid);
4103 sh_error_handle (level, FIL__, __LINE__, stat_return,
4104 MSG_FI_STAT,
4105 _("lstat"),
4106 sh_error_message (stat_return,errbuf, sizeof(errbuf)),
4107 (long) euid,
4108 tmp2);
4109 }
4110 else
4111 {
4112 /* a dangling link -- everybody seems to have plenty of them
4113 */
4114 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_DLNK,
4115 tmp, tmp2);
4116 }
4117 theFile->linkisok = BAD;
4118 SH_FREE(tmp);
4119 SH_FREE(tmp2);
4120 SH_FREE(linknamebuf);
4121 /*
4122 * changed Tue Feb 10 16:16:13 CET 2004:
4123 * add dangling symlinks into database
4124 * SL_RETURN((-1),_("sh_unix_getinfo"));
4125 */
4126 theFile->linkmode = 0;
4127 SL_RETURN((0),_("sh_unix_getinfo"));
4128 }
4129
4130 theFile->linkisok = GOOD;
4131
4132
4133 /* --- Determine file type. ---
4134 */
4135 sh_unix_getinfo_type (&lbuf, &type, theFile->link_c_mode);
4136 theFile->type = type;
4137
4138 /* --- Determine permissions. ---
4139 */
4140 sh_unix_getinfo_mode (&lbuf, &mode, theFile->link_c_mode);
4141 theFile->linkmode = lbuf.st_mode;
4142
4143 /* --- Output the link. ---
4144 */
4145 if (theFile->linkisok == GOOD)
4146 {
4147 tmp2 = sh_util_safe_name (linknamebuf);
4148 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LLNK,
4149 theFile->link_c_mode, tmp2);
4150 SH_FREE(tmp2);
4151 }
4152 SH_FREE(linknamebuf);
4153 }
4154 else /* not a link */
4155 {
4156 if (content)
4157 {
4158#ifdef HAVE_LIBZ
4159 unsigned long clen;
4160 unsigned char * compressed;
4161#ifdef HAVE_COMPRESSBOUND
4162 clen = compressBound(sh_string_len(content));
4163#else
4164 if (sh_string_len(content) > 10*SH_TXT_MAX)
4165 clen = SH_TXT_MAX;
4166 else
4167 clen = 13 + (int)(1.0001*sh_string_len(content));
4168#endif
4169 compressed = SH_ALLOC(clen);
4170 if (Z_OK == compress(compressed, &clen,
4171 (unsigned char *) sh_string_str(content),
4172 sh_string_len(content)))
4173 {
4174 if (clen < SH_TXT_MAX)
4175 {
4176 sh_util_base64_enc_alloc (&(theFile->link_path),
4177 (char *) compressed, clen);
4178 }
4179 else
4180 {
4181 char tmsg[128];
4182 char * tpath = sh_util_safe_name (theFile->fullpath);
4183 sl_snprintf(tmsg, sizeof(tmsg),
4184 _("compressed file too large (%lu bytes)"),
4185 clen);
4186 sh_error_handle (SH_ERR_WARN, FIL__, __LINE__, -1,
4187 MSG_E_SUBGPATH, tmsg,
4188 _("sh_unix_getinfo"), tpath);
4189 SH_FREE(tpath);
4190 }
4191 }
4192 SH_FREE(compressed);
4193#endif
4194 sh_string_destroy(&content);
4195 }
4196 }
4197 SL_RETURN((0),_("sh_unix_getinfo"));
4198}
4199
4200/* #if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE) */
4201#endif
4202
4203int sh_unix_unlock(char * lockfile, char * flag)
4204{
4205 int error = 0;
4206
4207 SL_ENTER(_("sh_unix_unlock"));
4208
4209 if (sh.flag.isdaemon == S_FALSE && flag == NULL)
4210 SL_RETURN((0),_("sh_unix_unlock"));
4211
4212 /* --- Logfile is not locked to us. ---
4213 */
4214 if (sh.flag.islocked == BAD && flag != NULL)
4215 SL_RETURN((-1),_("sh_unix_unlock"));
4216
4217 /* --- Check whether the directory is secure. ---
4218 */
4219 if (0 != tf_trust_check (lockfile, SL_YESPRIV))
4220 SL_RETURN((-1),_("sh_unix_unlock"));
4221
4222 /* --- Delete the lock file. ---
4223 */
4224 error = retry_aud_unlink (FIL__, __LINE__, lockfile);
4225
4226 if (error == 0)
4227 {
4228 if (flag != NULL)
4229 sh.flag.islocked = BAD; /* not locked anymore */
4230 }
4231 else if (flag != NULL)
4232 {
4233 char errbuf[SH_ERRBUF_SIZE];
4234 error = errno;
4235 sh_error_handle ((-1), FIL__, __LINE__, error, MSG_E_UNLNK,
4236 sh_error_message(error, errbuf, sizeof(errbuf)),
4237 lockfile);
4238 SL_RETURN((-1),_("sh_unix_unlock"));
4239 }
4240 SL_RETURN((0),_("sh_unix_unlock"));
4241}
4242
4243int sh_unix_check_piddir (char * pidpath)
4244{
4245 static struct stat buf;
4246 int status = 0;
4247 char * pid_dir;
4248
4249 SL_ENTER(_("sh_unix_check_piddir"));
4250
4251 pid_dir = sh_util_dirname (pidpath);
4252
4253 status = retry_lstat (FIL__, __LINE__, pid_dir, &buf);
4254
4255 if (status < 0 && errno == ENOENT)
4256 {
4257 status = mkdir (pid_dir, 0777);
4258 if (status < 0)
4259 {
4260 sh_error_handle ((-1), FIL__, __LINE__, status,
4261 MSG_E_SUBGEN,
4262 _("Cannot create PID directory"),
4263 _("sh_unix_check_piddir"));
4264 SH_FREE(pid_dir);
4265 SL_RETURN((-1),_("sh_unix_check_piddir"));
4266 }
4267 }
4268 else if (!S_ISDIR(buf.st_mode))
4269 {
4270 sh_error_handle ((-1), FIL__, __LINE__, status,
4271 MSG_E_SUBGEN,
4272 _("Path of PID directory refers to a non-directory object"),
4273 _("sh_unix_check_piddir"));
4274 SH_FREE(pid_dir);
4275 SL_RETURN((-1),_("sh_unix_check_piddir"));
4276 }
4277 SH_FREE(pid_dir);
4278 SL_RETURN((0),_("sh_unix_check_piddir"));
4279}
4280
4281int sh_unix_lock (char * lockfile, char * flag)
4282{
4283 int filed;
4284 int errnum;
4285 char myPid[64];
4286 SL_TICKET fd;
4287 extern int get_the_fd (SL_TICKET ticket);
4288
4289 SL_ENTER(_("sh_unix_lock"));
4290
4291 sprintf (myPid, "%ld\n", (long) sh.pid); /* known to fit */
4292
4293 if (flag == NULL) /* PID file, check for directory */
4294 {
4295 if (0 != sh_unix_check_piddir (lockfile))
4296 {
4297 SL_RETURN((-1),_("sh_unix_lock"));
4298 }
4299 }
4300
4301 fd = sl_open_safe_rdwr (FIL__, __LINE__,
4302 lockfile, SL_YESPRIV); /* fails if file exists */
4303
4304 if (!SL_ISERROR(fd))
4305 {
4306 errnum = sl_write (fd, myPid, sl_strlen(myPid));
4307 filed = get_the_fd(fd);
4308 fchmod (filed, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
4309 sl_close (fd);
4310
4311 if (!SL_ISERROR(errnum))
4312 {
4313 if (flag != NULL)
4314 sh.flag.islocked = GOOD;
4315 SL_RETURN((0),_("sh_unix_lock"));
4316 }
4317 }
4318
4319 TPT((0, FIL__, __LINE__, _("msg=<open pid file failed>\n")));
4320 if (flag != NULL)
4321 sh.flag.islocked = BAD;
4322 SL_RETURN((-1),_("sh_unix_lock"));
4323
4324 /* notreached */
4325}
4326
4327
4328/* check whether file is locked
4329 */
4330int sh_unix_test_and_lock (char * filename, char * lockfile)
4331{
4332 static struct stat buf;
4333 int status = 0;
4334
4335
4336 SL_TICKET fd;
4337 char line_in[128];
4338
4339 SL_ENTER(_("sh_unix_test_and_lock"));
4340
4341 status = retry_lstat (FIL__, __LINE__, lockfile, &buf);
4342
4343 /* --- No lock file found, try to lock. ---
4344 */
4345
4346 if (status < 0 && errno == ENOENT)
4347 {
4348 if (0 == sh_unix_lock (lockfile, filename))
4349 {
4350 if (filename != NULL)
4351 sh.flag.islocked = GOOD;
4352 SL_RETURN((0),_("sh_unix_test_and_lock"));
4353 }
4354 else
4355 {
4356 sh_error_handle ((-1), FIL__, __LINE__, status,
4357 MSG_E_SUBGEN,
4358 (filename == NULL) ? _("Cannot create PID file (1)") : _("Cannot create lock file (1)"),
4359 _("sh_unix_test_and_lock"));
4360 SL_RETURN((-1),_("sh_unix_test_and_lock"));
4361 }
4362 }
4363 else if (status == 0 && buf.st_size == 0)
4364 {
4365 if (filename != NULL)
4366 sh.flag.islocked = GOOD;
4367 sh_unix_unlock (lockfile, filename);
4368 if (filename != NULL)
4369 sh.flag.islocked = BAD;
4370 if (0 == sh_unix_lock (lockfile, filename))
4371 {
4372 if (filename != NULL)
4373 sh.flag.islocked = GOOD;
4374 SL_RETURN((0),_("sh_unix_test_and_lock"));
4375 }
4376 else
4377 {
4378 sh_error_handle ((-1), FIL__, __LINE__, status,
4379 MSG_E_SUBGEN,
4380 (filename == NULL) ? _("Cannot create PID file (2)") : _("Cannot create lock file (2)"),
4381 _("sh_unix_test_and_lock"));
4382 SL_RETURN((-1),_("sh_unix_test_and_lock"));
4383 }
4384 }
4385
4386 /* --- Check on lock. ---
4387 */
4388
4389 if (status >= 0)
4390 {
4391 fd = sl_open_read (FIL__, __LINE__, lockfile, SL_YESPRIV);
4392 if (SL_ISERROR(fd))
4393 sh_error_handle ((-1), FIL__, __LINE__, fd,
4394 MSG_E_SUBGEN,
4395 (filename == NULL) ? _("Cannot open PID file for read") : _("Cannot open lock file for read"),
4396 _("sh_unix_test_and_lock"));
4397 }
4398 else
4399 fd = -1;
4400
4401 if (!SL_ISERROR(fd))
4402 {
4403 /* read the PID in the lock file
4404 */
4405 status = sl_read (fd, line_in, sizeof(line_in));
4406 line_in[sizeof(line_in)-1] = '\0';
4407
4408 /* convert to numeric
4409 */
4410 if (status > 0)
4411 {
4412 errno = 0;
4413 status = strtol(line_in, (char **)NULL, 10);
4414 if (errno == ERANGE || status <= 0)
4415 {
4416 sh_error_handle ((-1), FIL__, __LINE__, status,
4417 MSG_E_SUBGEN,
4418 (filename == NULL) ? _("Bad PID in PID file") : _("Bad PID in lock file"),
4419 _("sh_unix_test_and_lock"));
4420
4421 status = -1;
4422 }
4423 }
4424 else
4425 {
4426 sh_error_handle ((-1), FIL__, __LINE__, status,
4427 MSG_E_SUBGEN,
4428 (filename == NULL) ? _("Cannot read PID file") : _("Cannot read lock file"),
4429 _("sh_unix_test_and_lock"));
4430 }
4431 sl_close(fd);
4432
4433 if (status > 0 && (unsigned int) status == sh.pid)
4434 {
4435 if (filename != NULL)
4436 sh.flag.islocked = GOOD;
4437 SL_RETURN((0),_("sh_unix_test_and_lock"));
4438 }
4439
4440
4441 /* --- Check whether the process exists. ---
4442 */
4443 if (status > 0)
4444 {
4445 errno = 0;
4446 status = aud_kill (FIL__, __LINE__, status, 0);
4447
4448 /* Does not exist, so remove the stale lock
4449 * and create a new one.
4450 */
4451 if (status < 0 && errno == ESRCH)
4452 {
4453 if (filename != NULL)
4454 sh.flag.islocked = GOOD;
4455 if (0 != sh_unix_unlock(lockfile, filename) && (filename !=NULL))
4456 sh.flag.islocked = BAD;
4457 else
4458 {
4459 if (0 == sh_unix_lock (lockfile, filename))
4460 {
4461 if (filename != NULL)
4462 sh.flag.islocked = GOOD;
4463 SL_RETURN((0),_("sh_unix_test_and_lock"));
4464 }
4465 else
4466 {
4467 sh_error_handle ((-1), FIL__, __LINE__, status,
4468 MSG_E_SUBGEN,
4469 (filename == NULL) ? _("Cannot create PID file (3)") : _("Cannot create lock file (3)"),
4470 _("sh_unix_test_and_lock"));
4471 }
4472 if (filename != NULL)
4473 sh.flag.islocked = BAD;
4474 }
4475 }
4476 else
4477 {
4478 sh_error_handle ((-1), FIL__, __LINE__, status,
4479 MSG_E_SUBGEN,
4480 (filename == NULL) ? _("Cannot remove stale PID file, PID may be a running process") : _("Cannot remove stale lock file, PID may be a running process"),
4481 _("sh_unix_test_and_lock"));
4482 if (filename != NULL)
4483 sh.flag.islocked = BAD;
4484 }
4485 }
4486 }
4487 SL_RETURN((-1),_("sh_unix_testlock"));
4488}
4489
4490/* write the PID file
4491 */
4492int sh_unix_write_pid_file()
4493{
4494 return sh_unix_test_and_lock(NULL, sh.srvlog.alt);
4495}
4496
4497/* write lock for filename
4498 */
4499int sh_unix_write_lock_file(char * filename)
4500{
4501 size_t len;
4502 int res;
4503 char * lockfile;
4504
4505 if (filename == NULL)
4506 return (-1);
4507
4508 len = sl_strlen(filename);
4509 if (sl_ok_adds(len, 6))
4510 len += 6;
4511 lockfile = SH_ALLOC(len);
4512 sl_strlcpy(lockfile, filename, len);
4513 sl_strlcat(lockfile, _(".lock"), len);
4514 res = sh_unix_test_and_lock(filename, lockfile);
4515 SH_FREE(lockfile);
4516 return res;
4517}
4518
4519/* rm lock for filename
4520 */
4521int sh_unix_rm_lock_file(char * filename)
4522{
4523 size_t len;
4524 int res;
4525 char * lockfile;
4526
4527 if (filename == NULL)
4528 return (-1);
4529
4530 len = sl_strlen(filename);
4531 if (sl_ok_adds(len, 6))
4532 len += 6;
4533 lockfile = SH_ALLOC(len);
4534 sl_strlcpy(lockfile, filename, len);
4535 sl_strlcat(lockfile, _(".lock"), len);
4536
4537 res = sh_unix_unlock(lockfile, filename);
4538 SH_FREE(lockfile);
4539 return res;
4540}
4541
4542/* rm lock for filename
4543 */
4544int sh_unix_rm_pid_file()
4545{
4546 return sh_unix_unlock(sh.srvlog.alt, NULL);
4547}
4548
4549/* Test whether file exists
4550 */
4551int sh_unix_file_exists(char * path)
4552{
4553 struct stat buf;
4554
4555 SL_ENTER(_("sh_unix_file_exists"));
4556
4557 if (0 == retry_lstat(FIL__, __LINE__, path, &buf))
4558 SL_RETURN( S_TRUE, _("sh_unix_file_exists"));
4559 else
4560 SL_RETURN( S_FALSE, _("sh_unix_file_exists"));
4561}
4562
4563
4564/* Test whether file exists, is a character device, and allows read
4565 * access.
4566 */
4567int sh_unix_device_readable(int fd)
4568{
4569 struct stat buf;
4570
4571 SL_ENTER(_("sh_unix_device_readable"));
4572
4573 if (retry_fstat(FIL__, __LINE__, fd, &buf) == -1)
4574 SL_RETURN( (-1), _("sh_unix_device_readable"));
4575 else if ( S_ISCHR(buf.st_mode) && 0 != (S_IROTH & buf.st_mode) )
4576 SL_RETURN( (0), _("sh_unix_device_readable"));
4577 else
4578 SL_RETURN( (-1), _("sh_unix_device_readable"));
4579}
4580
4581static char preq[16];
4582
4583/* return true if database is remote
4584 */
4585int file_is_remote ()
4586{
4587 static int init = 0;
4588 struct stat buf;
4589
4590 SL_ENTER(_("file_is_remote"));
4591
4592 if (init == 0)
4593 {
4594 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4595 ++init;
4596 }
4597 if (0 == sl_strncmp (sh.data.path, preq, 15))
4598 {
4599 if (sh.data.path[15] != '\0') /* should be start of path */
4600 {
4601 if (0 == stat(&(sh.data.path[15]), &buf))
4602 {
4603 SL_RETURN( S_FALSE, _("file_is_remote"));
4604 }
4605 }
4606 SL_RETURN( S_TRUE, _("file_is_remote"));
4607 }
4608 SL_RETURN( S_FALSE, _("file_is_remote"));
4609}
4610
4611/* Return the path to the configuration/database file.
4612 */
4613char * file_path(char what, char flag)
4614{
4615 static int init = 0;
4616
4617 SL_ENTER(_("file_path"));
4618
4619 if (init == 0)
4620 {
4621 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4622 ++init;
4623 }
4624
4625 switch (what)
4626 {
4627
4628 case 'C':
4629 if (0 == sl_strncmp (sh.conf.path, preq, 15))
4630 {
4631#if defined(SH_WITH_SERVER)
4632 if (sh.flag.isserver == S_TRUE && sl_strlen(sh.conf.path) == 15)
4633 SL_RETURN( NULL, _("file_path"));
4634 if (sh.flag.isserver == S_TRUE)
4635 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4636#endif
4637 if (flag == 'R')
4638 SL_RETURN( preq, _("file_path"));
4639 if (flag == 'I')
4640 {
4641 if (sl_strlen(sh.conf.path) == 15)
4642 SL_RETURN( NULL, _("file_path"));
4643 else
4644 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4645 }
4646 SL_RETURN ( preq, _("file_path"));
4647 }
4648 else
4649 SL_RETURN( sh.conf.path, _("file_path"));
4650 /* break; *//* unreachable */
4651
4652 case 'D':
4653 if (0 == sl_strncmp (sh.data.path, preq, 15))
4654 {
4655 if (flag == 'R')
4656 SL_RETURN( preq, _("file_path"));
4657 if (flag == 'W' && sl_strlen(sh.data.path) == 15)
4658 SL_RETURN (NULL, _("file_path"));
4659 if (flag == 'W')
4660 SL_RETURN( &(sh.data.path[15]), _("file_path"));
4661 }
4662 else
4663 SL_RETURN( sh.data.path, _("file_path"));
4664 break;
4665
4666 default:
4667 SL_RETURN( NULL, _("file_path"));
4668 }
4669
4670 return NULL; /* notreached */
4671}
4672/************************************************/
4673/**** Mlock Utilities ****/
4674/************************************************/
4675
4676#include <limits.h>
4677
4678int sh_unix_pagesize()
4679{
4680 int pagesize = 4096;
4681#if defined(_SC_PAGESIZE)
4682 pagesize = sysconf(_SC_PAGESIZE);
4683#elif defined(_SC_PAGE_SIZE)
4684 pagesize = sysconf(_SC_PAGE_SIZE);
4685#elif defined(HAVE_GETPAGESIZE)
4686 pagesize = getpagesize();
4687#elif defined(PAGESIZE)
4688 pagesize = PAGESIZE;
4689#endif
4690
4691 return ((pagesize > 0) ? pagesize : 4096);
4692}
4693
4694typedef struct sh_page_lt {
4695 unsigned long page_start;
4696 int page_refcount;
4697 char file[64];
4698 int line;
4699 struct sh_page_lt * next;
4700} sh_page_l;
4701
4702sh_page_l * sh_page_locked = NULL;
4703volatile int page_locking = 0;
4704
4705unsigned long sh_unix_lookup_page (void * in_addr, size_t len, int * num_pages)
4706{
4707 int pagesize = sh_unix_pagesize();
4708 unsigned long addr = (unsigned long) in_addr;
4709
4710 unsigned long pagebase;
4711 unsigned long pagediff;
4712 unsigned long pagenum = addr / pagesize;
4713
4714 SL_ENTER(_("sh_unix_lookup_page"));
4715#if 0
4716 fprintf(stderr, "mlock: --> base %ld, pagenum: %ld\n",
4717 addr, pagenum);
4718#endif
4719
4720 /* address of first page
4721 */
4722 pagebase = pagenum * pagesize;
4723
4724 /* number of pages
4725 */
4726 pagediff = (addr + len) - pagebase;
4727 pagenum = pagediff / pagesize;
4728 if (pagenum * pagesize < pagediff)
4729 ++pagenum;
4730
4731#if 0
4732 fprintf(stderr, "mlock: --> pagebase %ld, pagediff %ld, (addr + len) %ld\n",
4733 pagebase, pagediff, (addr + len));
4734#endif
4735
4736 *num_pages = pagenum;
4737 SL_RETURN((pagebase), _("sh_unix_lookup_page"));
4738}
4739
4740
4741#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4742
4743SH_MUTEX_STATIC(mutex_mlock,PTHREAD_MUTEX_INITIALIZER);
4744
4745int sh_unix_mlock (const char * file, int line, void * in_addr, size_t len)
4746{
4747 int num_pages;
4748 int status = 0;
4749 int pagesize;
4750 sh_page_l * page_list;
4751 unsigned long addr;
4752#ifdef TEST_MLOCK
4753 int i = 0;
4754#endif
4755
4756 SL_ENTER(_("sh_unix_mlock"));
4757
4758 /* There's no cancellation point here, except if tracing is on
4759 */
4760 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4761
4762 page_list = sh_page_locked;
4763
4764 if (0 != page_locking)
4765 {
4766 status = -1;
4767 goto exit_mlock;
4768 }
4769
4770 page_locking = 1;
4771
4772 pagesize = sh_unix_pagesize();
4773 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4774
4775#ifdef TEST_MLOCK
4776 fprintf(stderr, "mlock: addr %ld, base %ld, pages: %d, length %d\n",
4777 (unsigned long) in_addr, addr, num_pages, len);
4778#endif
4779
4780 /* increase refcount of locked pages
4781 * addr is first page; num_pages is #(consecutive pages) to lock
4782 */
4783
4784 while ((page_list != NULL) && (num_pages > 0))
4785 {
4786#ifdef TEST_MLOCK
4787 fprintf(stderr, "mlock: check page %d: %ld [%d]\n",
4788 i, page_list->page_start, page_list->page_refcount);
4789#endif
4790 if (page_list->page_start == addr)
4791 {
4792 page_list->page_refcount += 1;
4793 num_pages -= 1;
4794 addr += pagesize;
4795#ifdef TEST_MLOCK
4796 fprintf(stderr, "mlock: found page %d: %ld [%d], next page %ld\n",
4797 i, page_list->page_start, page_list->page_refcount, addr);
4798#endif
4799 }
4800#ifdef TEST_MLOCK
4801 ++i;
4802#endif
4803 page_list = page_list->next;
4804 }
4805
4806 /* mlock some more pages, if needed
4807 */
4808 while (num_pages > 0)
4809 {
4810#ifdef TEST_MLOCK
4811 fprintf(stderr, "mlock: lock page %d: mlock %ld [num_pages %d]\n",
4812 i, addr, num_pages);
4813 ++i;
4814#endif
4815 page_list = SH_ALLOC(sizeof(sh_page_l));
4816 page_list->page_start = addr;
4817 page_list->page_refcount = 1;
4818 sl_strlcpy(page_list->file, file, 64);
4819 page_list->line = line;
4820 status = mlock( (void *) addr, pagesize);
4821 if (status != 0)
4822 {
4823#ifdef TEST_MLOCK
4824 char errbuf[SH_ERRBUF_SIZE];
4825 fprintf(stderr, "mlock: error: %s\n",
4826 sh_error_message(errno, errbuf, sizeof(errbuf)));
4827#endif
4828 SH_FREE(page_list);
4829 page_locking = 0;
4830 goto exit_mlock;
4831 }
4832 page_list->next = sh_page_locked;
4833 sh_page_locked = page_list;
4834 num_pages -= 1;
4835 addr += pagesize;
4836 }
4837 page_locking = 0;
4838
4839 exit_mlock:
4840 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
4841
4842 SL_RETURN((status), _("sh_unix_mlock"));
4843}
4844#else
4845int sh_unix_mlock (const char * file, int line, void * in_addr, size_t len)
4846{
4847 (void) file; (void) line;
4848 (void) in_addr; (void) len;
4849 return -1;
4850}
4851#endif
4852
4853#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4854int sh_unix_munlock (void * in_addr, size_t len)
4855{
4856 int num_pages;
4857 int unlocked;
4858 int status;
4859 int pagesize;
4860 sh_page_l * page_list;
4861 sh_page_l * page_last;
4862 unsigned long addr;
4863
4864 int test_count;
4865 int test_status;
4866 int test_pages;
4867
4868#ifdef TEST_MLOCK
4869 int i = 0;
4870#endif
4871
4872 SL_ENTER(_("sh_unix_munlock"));
4873
4874 /* There's no cancellation point here, except if tracing is on
4875 */
4876 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4877
4878 unlocked = 0;
4879 status = 0;
4880 page_list = sh_page_locked;
4881
4882 if (0 != page_locking)
4883 {
4884 status = -1;
4885 goto exit_munlock;
4886 }
4887 page_locking = 1;
4888
4889 pagesize = sh_unix_pagesize();
4890 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4891
4892#ifdef TEST_MLOCK
4893 fprintf(stderr, "munlock: in_addr %ld, addr %ld, pages: %d, length %d\n",
4894 (unsigned long) in_addr, addr, num_pages, len);
4895#endif
4896
4897 test_pages = num_pages;
4898
4899 /* reduce refcount of locked pages
4900 * addr is first page; num_pages is #(consecutive pages) to lock
4901 */
4902 while ((page_list != NULL) && (num_pages > 0))
4903 {
4904#ifdef TEST_MLOCK
4905 fprintf(stderr, "munlock: page %d: %ld [%d]\n",
4906 i, page_list->page_start, page_list->page_refcount);
4907#endif
4908
4909 test_status = 0;
4910 for (test_count = 0; test_count < test_pages; ++test_count)
4911 {
4912 if (page_list->page_start == (addr + (test_count * pagesize)))
4913 {
4914 test_status = 1;
4915 break;
4916 }
4917 }
4918
4919 if (test_status == 1)
4920 {
4921 page_list->page_refcount -= 1;
4922 if (page_list->page_refcount == 0)
4923 {
4924 status = munlock ( (void *) addr, pagesize);
4925 ++unlocked;
4926 }
4927 num_pages -= 1;
4928#ifdef TEST_MLOCK
4929 fprintf(stderr,
4930 "munlock: page %d: %ld [refcount %d], refcount reduced\n",
4931 i, page_list->page_start, page_list->page_refcount);
4932#endif
4933 }
4934#ifdef TEST_MLOCK
4935 ++i;
4936#endif
4937 page_list = page_list->next;
4938 }
4939
4940#ifdef TEST_MLOCK
4941 i = 0;
4942#endif
4943
4944 if (unlocked > 0)
4945 {
4946 page_list = sh_page_locked;
4947 page_last = sh_page_locked;
4948
4949 while ((page_list != NULL) && (unlocked > 0))
4950 {
4951 if (page_list->page_refcount == 0)
4952 {
4953#ifdef TEST_MLOCK
4954 fprintf(stderr, "munlock: remove page %d: %ld [refcount %d]\n",
4955 i, page_list->page_start, page_list->page_refcount);
4956#endif
4957 if (page_last != page_list)
4958 {
4959 page_last->next = page_list->next;
4960 SH_FREE(page_list);
4961 page_list = page_last->next;
4962 }
4963 else
4964 {
4965 page_last = page_list->next;
4966 if (page_list == sh_page_locked)
4967 sh_page_locked = page_list->next;
4968 SH_FREE(page_list);
4969 page_list = page_last;
4970 }
4971 --unlocked;
4972 }
4973 else
4974 {
4975#ifdef TEST_MLOCK
4976 fprintf(stderr, "munlock: skip page %d: %ld [refcount %d]\n",
4977 i, page_list->page_start, page_list->page_refcount);
4978#endif
4979
4980 page_last = page_list;
4981 page_list = page_list->next;
4982 }
4983#ifdef TEST_MLOCK
4984 ++i;
4985#endif
4986 }
4987 }
4988
4989 page_locking = 0;
4990
4991 exit_munlock:
4992 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
4993 SL_RETURN((status), _("sh_unix_munlock"));
4994}
4995#else
4996int sh_unix_munlock (void * in_addr, size_t len)
4997{
4998 (void) in_addr; (void) len;
4999 return -1;
5000}
5001#endif
5002
5003int sh_unix_count_mlock()
5004{
5005 int i = 0;
5006 char str[32][64];
5007 sh_page_l * page_list;
5008
5009 SL_ENTER(_("sh_unix_count_mlock"));
5010
5011#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
5012 /* There's no cancellation point here, except if tracing is on
5013 */
5014 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
5015#endif
5016
5017 page_list = sh_page_locked;
5018
5019 while (page_list != NULL)
5020 {
5021#ifdef WITH_TPT
5022 if (i < 32)
5023 sl_snprintf(str[i], 64, _("file: %s line: %d page: %d"),
5024 page_list->file, page_list->line, i+1);
5025#endif
5026 page_list = page_list->next;
5027 ++i;
5028 }
5029
5030#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
5031 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
5032#endif
5033
5034#ifdef WITH_TPT
5035 {
5036 int j = 0;
5037 while (j < i && j < 32)
5038 {
5039 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, j, MSG_E_SUBGEN,
5040 str[j], _("sh_unix_count_mlock"));
5041 ++j;
5042 }
5043 }
5044#endif
5045
5046 sl_snprintf(str[0], 64, _("%d pages locked"), i);
5047 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, i, MSG_E_SUBGEN,
5048 str[0], _("sh_unix_count_mlock"));
5049 SL_RETURN((i), _("sh_unix_count_mlock"));
5050}
5051
5052/************************************************/
5053/************************************************/
5054/**** Stealth Utilities ****/
5055/************************************************/
5056/************************************************/
5057#ifdef SH_STEALTH
5058
5059void sh_unix_xor_code (char * str, int len)
5060{
5061 register int i;
5062
5063 for (i = 0; i < len; ++i) str[i] ^= (char) XOR_CODE;
5064 return;
5065}
5066
5067#if !defined(SH_STEALTH_MICRO)
5068
5069
5070int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
5071 unsigned long * bytes_read);
5072unsigned long first_hex_block(SL_TICKET fd, unsigned long * max);
5073
5074/*
5075 * --- Get hidden data from a block of hex data. ---
5076 */
5077int sh_unix_getline_stealth (SL_TICKET fd, char * str, int len)
5078{
5079 int add_off = 0, llen;
5080 static unsigned long off_data = 0;
5081 static unsigned long max_data = 0;
5082 static unsigned long bytes_read = 0;
5083 static int stealth_init = BAD;
5084
5085 SL_ENTER(_("sh_unix_getline_stealth"));
5086
5087 if (str == NULL)
5088 {
5089 off_data = 0;
5090 max_data = 0;
5091 bytes_read = 0;
5092 stealth_init = BAD;
5093 SL_RETURN(0, _("sh_unix_getline_stealth"));
5094 }
5095
5096 /* --- Initialize. ---
5097 */
5098 if (stealth_init == BAD)
5099 {
5100 off_data = first_hex_block(fd, &max_data);
5101 if (off_data == 0)
5102 {
5103 dlog(1, FIL__, __LINE__,
5104 _("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"));
5105 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
5106 _("Stealth config file."));
5107 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
5108 }
5109 stealth_init = GOOD;
5110 max_data += off_data;
5111 }
5112
5113 /* --- Seek to proper position. ---
5114 */
5115 if (bytes_read >= max_data || add_off < 0)
5116 {
5117 dlog(1, FIL__, __LINE__,
5118 _("The capacity of the container image file for the stealth config file seems to be too small. Your config file is likely truncated.\n"));
5119 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
5120 _("Stealth config file."));
5121 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
5122 }
5123 sl_seek(fd, off_data);
5124
5125 /* --- Read one line. ---
5126 */
5127 add_off = hideout_hex_block(fd, (unsigned char *) str, len, &bytes_read);
5128 off_data += add_off;
5129
5130 llen = sl_strlen(str);
5131 SL_RETURN(llen, _("sh_unix_getline_stealth"));
5132}
5133
5134int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
5135 unsigned long * bytes_read)
5136{
5137
5138 register int i, j, k;
5139 unsigned char c, e;
5140 register int num;
5141 unsigned char mask[9] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
5142 unsigned long here = 0;
5143 unsigned long retval = 0;
5144 unsigned long bread = 0;
5145
5146 SL_ENTER(_("hideout_hex_block"));
5147
5148 ASSERT_RET((len > 1), _("len > 1"), (0));
5149
5150 --len;
5151
5152 i = 0;
5153 while (i < len)
5154 {
5155 for (j = 0; j < 8; ++j)
5156 {
5157
5158 /* --- Get a low byte, modify, read back. ---
5159 */
5160 for (k = 0; k < 2; ++k)
5161 {
5162 /* -- Skip whitespace. ---
5163 */
5164 c = ' ';
5165 do {
5166 do {
5167 num = sl_read (fd, &c, 1);
5168 } while (num == 0 && errno == EINTR);
5169 if (num > 0)
5170 ++here;
5171 else if (num == 0)
5172 SL_RETURN((0), _("hideout_hex_block"));
5173 else
5174 SL_RETURN((-1), _("hideout_hex_block"));
5175 } while (c == '\n' || c == '\t' || c == '\r' ||
5176 c == ' ');
5177 }
5178
5179
5180 /* --- e is the value of the low byte. ---
5181 */
5182 e = (unsigned char) sh_util_hexchar( c );
5183 if ((e & mask[7]) != 0) /* bit is set */
5184 str[i] |= mask[j];
5185 else /* bit is not set */
5186 str[i] &= ~mask[j];
5187
5188 bread += 1;
5189 }
5190 if (str[i] == '\n') break;
5191 ++i;
5192 }
5193
5194 if (i != 0)
5195 str[i] = '\0';
5196 else
5197 str[i+1] = '\0'; /* keep newline and terminate */
5198 retval += here;
5199 *bytes_read += (bread/8);
5200
5201 SL_RETURN(retval, _("hideout_hex_block"));
5202}
5203
5204/* --- Get offset of first data block. ---
5205 */
5206unsigned long first_hex_block(SL_TICKET fd, unsigned long * max)
5207{
5208 unsigned int i;
5209 long num = 1;
5210 unsigned long lnum;
5211 char c;
5212 int nothex = 0;
5213 unsigned long retval = 0;
5214 unsigned int this_line = 0;
5215 char theline[SH_BUFSIZE];
5216
5217 SL_ENTER(_("first_hex_block"));
5218
5219 *max = 0;
5220
5221 while (1)
5222 {
5223 theline[0] = '\0';
5224 this_line = 0;
5225 c = '\0';
5226 while (c != '\n' && num > 0 && this_line < (sizeof(theline)-1))
5227 {
5228 do {
5229 num = sl_read (fd, &c, 1);
5230 } while (num == 0 && errno == EINTR);
5231 if (num > 0)
5232 theline[this_line] = c;
5233 else
5234 SL_RETURN((0), _("first_hex_block"));
5235 ++this_line;
5236 }
5237 theline[this_line] = '\0';
5238
5239 /* not only 'newline' */
5240 if (this_line > 60)
5241 {
5242 nothex = 0;
5243 i = 0;
5244 while (nothex == 0 && i < (this_line-1))
5245 {
5246 if (! isxdigit((int)theline[i])) nothex = 1;
5247 ++i;
5248 }
5249 if (nothex == 1) retval += this_line;
5250 }
5251 else
5252 {
5253 nothex = 1;
5254 retval += this_line;
5255 }
5256
5257 if (nothex == 0)
5258 {
5259 *max = 0;
5260 do {
5261 do {
5262 num = sl_read (fd, theline, SH_BUFSIZE);
5263 } while (num == 0 && errno == EINTR);
5264 if (num > 0)
5265 {
5266 lnum = (unsigned long) num;
5267 for (i = 0; i < lnum; ++i)
5268 {
5269 c = theline[i];
5270 if (c == '\n' || c == '\t' || c == '\r' || c == ' ')
5271 ;
5272 else if (!isxdigit((int)c))
5273 break;
5274 else
5275 *max += 1;
5276 }
5277 }
5278 } while (num > 0);
5279
5280 *max /= 16;
5281 SL_RETURN((retval), _("first_hex_block"));
5282 }
5283
5284 }
5285 /* SL_RETURN((0), _("first_hex_block")); *//* unreachable */
5286}
5287
5288 /* if !defined(SH_STEALTH_MICRO) */
5289#endif
5290
5291 /* ifdef SH_STEALTH */
5292#endif
5293
5294/*
5295 * anti-debugger code
5296 */
5297#if defined(SCREW_IT_UP)
5298volatile int sh_not_traced = 0;
5299
5300#ifdef HAVE_GETTIMEOFDAY
5301struct timeval save_tv;
5302#endif
5303
5304void sh_sigtrap_handler (int signum)
5305{
5306#ifdef HAVE_GETTIMEOFDAY
5307 struct timeval tv;
5308 long difftv;
5309
5310 gettimeofday(&tv, NULL);
5311 difftv = (tv.tv_sec - save_tv.tv_sec) * 1000000 +
5312 (tv.tv_usec - save_tv.tv_usec);
5313 if (difftv > 500000)
5314 raise(SIGKILL);
5315#endif
5316 sh_not_traced += signum;
5317 return;
5318}
5319#endif
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