source: trunk/src/sh_unix.c@ 308

Last change on this file since 308 was 295, checked in by katerina, 14 years ago

Support for IPv6 (ticket #222).
File size: 122.6 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_ipvx.h"
101#include "sh_tiger.h"
102#include "sh_prelink.h"
103#include "sh_pthread.h"
104
105/* moved here from far below
106 */
107#include <netdb.h>
108
109#define SH_NEED_PWD_GRP
110#define SH_NEED_GETHOSTBYXXX
111#include "sh_static.h"
112
113#ifndef HAVE_LSTAT
114#define lstat stat
115#endif
116
117#if defined(S_IFLNK) && !defined(S_ISLNK)
118#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
119#else
120#if !defined(S_ISLNK)
121#define S_ISLNK(mode) (0)
122#endif
123#endif
124
125#if defined(S_IFSOCK) && !defined(S_ISSOCK)
126#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
127#else
128#if !defined(S_ISSOCK)
129#define S_ISSOCK(mode) (0)
130#endif
131#endif
132
133#if defined(S_IFDOOR) && !defined(S_ISDOOR)
134#define S_ISDOOR(mode) (((mode) & S_IFMT) == S_IFDOOR)
135#else
136#if !defined(S_ISDOOR)
137#define S_ISDOOR(mode) (0)
138#endif
139#endif
140
141#if defined(S_IFPORT) && !defined(S_ISPORT)
142#define S_ISPORT(mode) (((mode) & S_IFMT) == S_IFPORT)
143#else
144#if !defined(S_ISPORT)
145#define S_ISPORT(mode) (0)
146#endif
147#endif
148
149#define SH_KEY_NULL _("000000000000000000000000000000000000000000000000")
150
151#undef FIL__
152#define FIL__ _("sh_unix.c")
153
154unsigned long mask_PRELINK = MASK_PRELINK_;
155unsigned long mask_USER0 = MASK_USER_;
156unsigned long mask_USER1 = MASK_USER_;
157unsigned long mask_USER2 = MASK_USER_;
158unsigned long mask_USER3 = MASK_USER_;
159unsigned long mask_USER4 = MASK_USER_;
160unsigned long mask_ALLIGNORE = MASK_ALLIGNORE_;
161unsigned long mask_ATTRIBUTES = MASK_ATTRIBUTES_;
162unsigned long mask_LOGFILES = MASK_LOGFILES_;
163unsigned long mask_LOGGROW = MASK_LOGGROW_;
164unsigned long mask_READONLY = MASK_READONLY_;
165unsigned long mask_NOIGNORE = MASK_NOIGNORE_;
166
167
168extern char **environ;
169
170int sh_unix_maskreset()
171{
172 mask_PRELINK = MASK_PRELINK_;
173 mask_USER0 = MASK_USER_;
174 mask_USER1 = MASK_USER_;
175 mask_USER2 = MASK_USER_;
176 mask_USER3 = MASK_USER_;
177 mask_USER4 = MASK_USER_;
178 mask_ALLIGNORE = MASK_ALLIGNORE_;
179 mask_ATTRIBUTES = MASK_ATTRIBUTES_;
180 mask_LOGFILES = MASK_LOGFILES_;
181 mask_LOGGROW = MASK_LOGGROW_;
182 mask_READONLY = MASK_READONLY_;
183 mask_NOIGNORE = MASK_NOIGNORE_;
184 return 0;
185}
186
187
188#ifdef SYS_SIGLIST_DECLARED
189/* extern const char * const sys_siglist[]; */
190#else
191char * sh_unix_siglist (int signum)
192{
193 switch (signum)
194 {
195#ifdef SIGHUP
196 case SIGHUP:
197 return _("Hangup");
198#endif
199#ifdef SIGINT
200 case SIGINT:
201 return _("Interrupt");
202#endif
203#ifdef SIGQUIT
204 case SIGQUIT:
205 return _("Quit");
206#endif
207#ifdef SIGILL
208 case SIGILL:
209 return _("Illegal instruction");
210#endif
211#ifdef SIGTRAP
212 case SIGTRAP:
213 return _("Trace/breakpoint trap");
214#endif
215#ifdef SIGABRT
216 case SIGABRT:
217 return _("IOT trap/Abort");
218#endif
219#ifdef SIGBUS
220 case SIGBUS:
221 return _("Bus error");
222#endif
223#ifdef SIGFPE
224 case SIGFPE:
225 return _("Floating point exception");
226#endif
227#ifdef SIGUSR1
228 case SIGUSR1:
229 return _("User defined signal 1");
230#endif
231#ifdef SIGSEGV
232 case SIGSEGV:
233 return _("Segmentation fault");
234#endif
235#ifdef SIGUSR2
236 case SIGUSR2:
237 return _("User defined signal 2");
238#endif
239#ifdef SIGPIPE
240 case SIGPIPE:
241 return _("Broken pipe");
242#endif
243#ifdef SIGALRM
244 case SIGALRM:
245 return _("Alarm clock");
246#endif
247#ifdef SIGTERM
248 case SIGTERM:
249 return _("Terminated");
250#endif
251#ifdef SIGSTKFLT
252 case SIGSTKFLT:
253 return _("Stack fault");
254#endif
255#ifdef SIGCHLD
256 case SIGCHLD:
257 return _("Child exited");
258#endif
259#ifdef SIGCONT
260 case SIGCONT:
261 return _("Continued");
262#endif
263#ifdef SIGSTOP
264 case SIGSTOP:
265 return _("Stopped");
266#endif
267#ifdef SIGTSTP
268 case SIGTSTP:
269 return _("Stop typed at tty");
270#endif
271#ifdef SIGTTIN
272 case SIGTTIN:
273 return _("Stopped (tty input)");
274#endif
275#ifdef SIGTTOU
276 case SIGTTOU:
277 return _("Stopped (tty output)");
278#endif
279#ifdef SIGURG
280 case SIGURG:
281 return _("Urgent condition");
282#endif
283#ifdef SIGXCPU
284 case SIGXCPU:
285 return _("CPU time limit exceeded");
286#endif
287#ifdef SIGXFSZ
288 case SIGXFSZ:
289 return _("File size limit exceeded");
290#endif
291#ifdef SIGVTALRM
292 case SIGVTALRM:
293 return _("Virtual time alarm");
294#endif
295#ifdef SIGPROF
296 case SIGPROF:
297 return _("Profile signal");
298#endif
299#ifdef SIGWINCH
300 case SIGWINCH:
301 return _("Window size changed");
302#endif
303#ifdef SIGIO
304 case SIGIO:
305 return _("Possible I/O");
306#endif
307#ifdef SIGPWR
308 case SIGPWR:
309 return _("Power failure");
310#endif
311#ifdef SIGUNUSED
312 case SIGUNUSED:
313 return _("Unused signal");
314#endif
315 }
316 return _("Unknown");
317}
318#endif
319
320
321/* Log from within a signal handler without using any
322 * functions that are not async signal safe.
323 *
324 * This is the safe_itoa helper function.
325 */
326char * safe_itoa(int i, char * str, int size)
327{
328 unsigned int u;
329 int iisneg = 0;
330 char *p = &str[size-1];
331
332 *p = '\0';
333 if (i < 0) {
334 iisneg = 1;
335 u = ((unsigned int)(-(1+i))) + 1;
336 } else {
337 u = i;
338 }
339 do {
340 --p;
341 *p = '0' + (u % 10);
342 u /= 10;
343 } while (u && (p != str));
344 if ((iisneg == 1) && (p != str)) {
345 --p;
346 *p = '-';
347 }
348 return p;
349}
350
351/* Log from within a signal handler without using any
352 * functions that are not async signal safe.
353 *
354 * This is the safe_logger function.
355 * Arguments: signal (signal number), method (0=logger, 1=stderr), thepid (pid)
356 */
357extern int OnlyStderr;
358
359int safe_logger (int thesignal, int method, char * details)
360{
361 unsigned int i = 0;
362 int status = -1;
363 struct stat buf;
364 pid_t newpid;
365 char str[128];
366 char * p;
367
368 char l0[64], l1[64], l2[64], l3[64];
369 char a0[32], a1[32], a2[32];
370 char e0[128];
371 char msg[128];
372
373 char * locations[] = { NULL, NULL, NULL, NULL, NULL };
374 char * envp[] = { NULL, NULL };
375 char * argp[] = { NULL, NULL, NULL, NULL, NULL };
376
377 pid_t thepid = getpid();
378
379 if ((sh.flag.isdaemon == S_FALSE) || (OnlyStderr == S_TRUE))
380 method = 1;
381
382 /* seems that solaris cc needs this way of initializing ...
383 */
384 locations[0] = l0;
385 locations[1] = l1;
386 locations[2] = l2;
387 locations[3] = l3;
388
389 envp[0] = e0;
390
391 argp[0] = a0;
392 argp[1] = a1;
393 argp[2] = a2;
394
395 sl_strlcpy(msg, _("samhain["), 128);
396 p = safe_itoa((int) thepid, str, 128);
397 if (p && *p)
398 sl_strlcat(msg, p, 128);
399 if (thesignal == 0)
400 {
401 if (details == NULL) {
402 sl_strlcat(msg, _("]: out of memory"), 128);
403 } else {
404 sl_strlcat(msg, _("]: "), 128);
405 sl_strlcat(msg, details, 128);
406 }
407 }
408 else
409 {
410 sl_strlcat(msg, _("]: exit on signal "), 128);
411 p = safe_itoa(thesignal, str, 128);
412 if (p && *p)
413 sl_strlcat(msg, p, 128);
414 }
415
416 if (method == 1) {
417#ifndef STDERR_FILENO
418#define STDERR_FILENO 2
419#endif
420 int retval = 0;
421 do {
422 retval = write(STDERR_FILENO, msg, strlen(msg));
423 } while (retval < 0 && errno == EINTR);
424 do {
425 retval = write(STDERR_FILENO, "\n", 1);
426 } while (retval < 0 && errno == EINTR);
427 return 0;
428 }
429
430 sl_strlcpy (l0, _("/usr/bin/logger"), 64);
431 sl_strlcpy (l1, _("/usr/sbin/logger"), 64);
432 sl_strlcpy (l2, _("/usr/ucb/logger"), 64);
433 sl_strlcpy (l3, _("/bin/logger"), 64);
434
435 sl_strlcpy (a0, _("logger"), 32);
436 sl_strlcpy (a1, _("-p"), 32);
437 sl_strlcpy (a2, _("daemon.alert"), 32);
438
439 sl_strlcpy (e0,
440 _("PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/ucb:/usr/local/bin"),
441 128);
442
443 while (locations[i] != NULL) {
444 status = stat(locations[i], &buf);
445 if (status == 0)
446 break;
447 ++i;
448 }
449
450 if (locations[i] != NULL) {
451 argp[3] = msg;
452 newpid = fork();
453 if (newpid == 0) {
454 execve(locations[i], argp, envp);
455 _exit(1);
456 }
457 else if (newpid > 0) {
458 waitpid(newpid, &status, WUNTRACED);
459 }
460 }
461 return 0;
462}
463
464void safe_fatal (const char * details,
465 const char * file, int line)
466{
467 char msg[128];
468 char str[128];
469 char * p;
470 int thesignal = 0;
471 int method = 0;
472
473 p = safe_itoa((int) line, str, 128);
474 sl_strlcpy(msg, _("FATAL: "), 128);
475 sl_strlcat(msg, file, 128);
476 sl_strlcat(msg, ": ", 128);
477 if (p && (*p)) {
478 sl_strlcat(msg, p , 128);
479 sl_strlcat(msg, ": ", 128);
480 }
481 sl_strlcat(msg, details, 128);
482 (void) safe_logger (thesignal, method, msg);
483 raise(SIGKILL);
484}
485
486extern char sh_sig_msg[64];
487
488volatile int immediate_exit_normal = 0;
489
490#if defined(SA_SIGACTION_WORKS)
491static
492void sh_unix_sigexit (int mysignal, siginfo_t * signal_info, void * signal_add)
493#else
494static
495void sh_unix_sigexit (int mysignal)
496#endif
497{
498
499#if defined(SA_SIGACTION_WORKS)
500 if (signal_info != NULL && signal_info->si_code == SI_USER &&
501 mysignal != SIGTERM && mysignal != SIGINT)
502 {
503 return;
504 }
505
506 /* avoid compiler warning (unused var)
507 */
508 (void) signal_add;
509#endif
510
511 /*
512 * Block re-entry
513 */
514 if (immediate_exit_normal > 0)
515 {
516 ++immediate_exit_normal;
517 if ((skey != NULL) && (immediate_exit_normal == 2))
518 memset (skey, '\0', sizeof(sh_key_t));
519 if (immediate_exit_normal == 2)
520 {
521 int val_return;
522
523 do {
524 val_return = chdir ("/");
525 } while (val_return < 0 && errno == EINTR);
526
527 safe_logger (mysignal, 0, NULL);
528 }
529 raise(SIGKILL);
530 }
531 else
532 {
533 immediate_exit_normal = 1;
534 }
535
536#ifdef SYS_SIGLIST_DECLARED
537 strncpy (sh_sig_msg, sys_siglist[mysignal], 40);
538#else
539 strncpy (sh_sig_msg, sh_unix_siglist(mysignal), 40);
540#endif
541 sh_sig_msg[63] = '\0';
542
543 ++sig_raised;
544 ++sig_urgent;
545 sig_termfast = 1;
546 return;
547}
548
549volatile int immediate_exit_fast = 0;
550
551#if defined(SA_SIGACTION_WORKS)
552static
553void sh_unix_sigexit_fast (int mysignal, siginfo_t * signal_info,
554 void * signal_add)
555#else
556static
557void sh_unix_sigexit_fast (int mysignal)
558#endif
559{
560#if defined(SL_DEBUG) && (defined(USE_SYSTEM_MALLOC) || !defined(USE_MALLOC_LOCK))
561 int retval;
562#endif
563
564#if defined(SA_SIGACTION_WORKS)
565 if (signal_info != NULL && signal_info->si_code == SI_USER)
566 {
567 return;
568 }
569#endif
570
571 /* avoid compiler warning (unused var)
572 */
573#if defined(SA_SIGACTION_WORKS)
574 (void) signal_add;
575#endif
576
577 /* Check whether the heap is ok; otherwise _exit
578 */
579#if !defined(SL_DEBUG) || (!defined(USE_SYSTEM_MALLOC) && defined(USE_MALLOC_LOCK))
580 ++immediate_exit_fast;
581 if (skey != NULL && immediate_exit_fast < 2)
582 memset (skey, '\0', sizeof(sh_key_t));
583 if (immediate_exit_fast < 2)
584 safe_logger (mysignal, 0, NULL);
585 raise(SIGKILL);
586#else
587
588 /* debug code
589 */
590 if (immediate_exit_fast == 1)
591 {
592 ++immediate_exit_fast;
593 if (skey != NULL)
594 memset (skey, '\0', sizeof(sh_key_t));
595#ifdef WITH_MESSAGE_QUEUE
596 close_ipc ();
597#endif
598 safe_logger (mysignal, 0, NULL);
599 do {
600 retval = chdir ("/");
601 } while (retval < 0 && errno == EINTR);
602 raise(SIGFPE);
603 }
604 else if (immediate_exit_fast == 2)
605 {
606 do {
607 retval = chdir ("/");
608 } while (retval < 0 && errno == EINTR);
609 raise(SIGFPE);
610 }
611 else if (immediate_exit_fast != 0)
612 {
613 raise(SIGKILL);
614 }
615
616 ++immediate_exit_fast;
617
618 /* The FPE|BUS|SEGV|ILL signals leave the system in an undefined
619 * state, thus it is best to exit immediately.
620 */
621#ifdef SYS_SIGLIST_DECLARED
622 strncpy (sh_sig_msg, sys_siglist[mysignal], 40);
623#else
624 strncpy (sh_sig_msg, sh_unix_siglist(mysignal), 40);
625#endif
626 sh_sig_msg[63] = '\0';
627
628 sl_stack_print();
629
630 /* Try to push out an error message.
631 */
632 sh_error_handle ((-1), FIL__, __LINE__, mysignal, MSG_EXIT_NORMAL,
633 sh.prg_name, sh_sig_msg);
634
635 if (skey != NULL)
636 memset (skey, '\0', sizeof(sh_key_t));
637#ifdef WITH_MESSAGE_QUEUE
638 close_ipc ();
639#endif
640
641 do {
642 retval = chdir ("/");
643 } while (retval < 0 && errno == EINTR);
644
645 raise(SIGFPE);
646#endif
647}
648
649
650static
651void sh_unix_sigaction (int mysignal)
652{
653 ++sig_raised;
654#ifdef SIGUSR1
655 if (mysignal == SIGUSR1)
656 sig_debug_switch = 1;
657#endif
658#ifdef SIGUSR2
659 if (mysignal == SIGUSR2)
660 {
661 ++sig_suspend_switch;
662 ++sig_urgent;
663 }
664#endif
665#ifdef SIGHUP
666 if (mysignal == SIGHUP)
667 sig_config_read_again = 1;
668#endif
669#ifdef SIGTTOU
670 if (mysignal == SIGTTOU)
671 sig_force_check = 1;
672#endif
673#ifdef SIGTTIN
674 if (mysignal == SIGTTIN)
675 sig_fresh_trail = 1;
676#endif
677#ifdef SIGABRT
678 if (mysignal == SIGABRT)
679 sig_fresh_trail = 1;
680#endif
681#ifdef SIGQUIT
682 if (mysignal == SIGQUIT)
683 {
684 sig_terminate = 1;
685 ++sig_urgent;
686 }
687#endif
688#ifdef SIGTERM
689 if (mysignal == SIGTERM)
690 {
691 strncpy (sh_sig_msg, _("Terminated"), 40);
692 sig_termfast = 1;
693 ++sig_urgent;
694 }
695#endif
696
697 return;
698}
699
700static
701void sh_unix_siginstall (int goDaemon)
702{
703 struct sigaction act, act_fast, act2, oldact, ignact;
704#if defined (SH_WITH_SERVER)
705 (void) goDaemon;
706#endif
707
708 SL_ENTER(_("sh_unix_siginstall"));
709
710 ignact.sa_handler = SIG_IGN; /* signal action */
711 sigemptyset( &ignact.sa_mask ); /* set an empty mask */
712 ignact.sa_flags = 0; /* init sa_flags */
713
714#if defined(SA_SIGACTION_WORKS)
715 act.sa_sigaction = &sh_unix_sigexit; /* signal action */
716#else
717 act.sa_handler = &sh_unix_sigexit; /* signal action */
718#endif
719
720 sigfillset ( &act.sa_mask ); /* set a full mask */
721
722
723 /* Block all but deadly signals.
724 */
725#ifdef SIGILL
726 sigdelset ( &act.sa_mask, SIGILL );
727#endif
728#ifndef SL_DEBUG
729#ifdef SIGFPE
730 sigdelset ( &act.sa_mask, SIGFPE );
731#endif
732#endif
733#ifdef SIGSEGV
734 sigdelset ( &act.sa_mask, SIGSEGV );
735#endif
736#ifdef SIGBUS
737 sigdelset ( &act.sa_mask, SIGBUS );
738#endif
739
740#if defined(SA_SIGACTION_WORKS)
741 act_fast.sa_sigaction = &sh_unix_sigexit_fast; /* signal action */
742#else
743 act_fast.sa_handler = &sh_unix_sigexit_fast; /* signal action */
744#endif
745
746 sigfillset ( &act_fast.sa_mask ); /* set a full mask */
747
748#ifdef SIGILL
749 sigdelset ( &act_fast.sa_mask, SIGILL );
750#endif
751#ifndef SL_DEBUG
752#ifdef SIGFPE
753 sigdelset ( &act_fast.sa_mask, SIGFPE );
754#endif
755#endif
756#ifdef SIGSEGV
757 sigdelset ( &act_fast.sa_mask, SIGSEGV );
758#endif
759#ifdef SIGBUS
760 sigdelset ( &act_fast.sa_mask, SIGBUS );
761#endif
762
763
764 /* Use siginfo to verify origin of signal, if possible.
765 */
766#if defined(SA_SIGACTION_WORKS)
767 act.sa_flags = SA_SIGINFO;
768 act_fast.sa_flags = SA_SIGINFO;
769#else
770 act.sa_flags = 0;
771 act_fast.sa_flags = 0;
772#endif
773
774 /* Do not block the signal from being received in its handler ...
775 * (is this a good or a bad idea ??).
776 */
777#if defined(SA_NOMASK)
778 act_fast.sa_flags |= SA_NOMASK;
779#elif defined(SA_NODEFER)
780 act_fast.sa_flags |= SA_NODEFER;
781#endif
782
783
784 act2.sa_handler = &sh_unix_sigaction; /* signal action */
785 sigemptyset( &act2.sa_mask ); /* set an empty mask */
786 act2.sa_flags = 0; /* init sa_flags */
787
788 /* signals to control the daemon */
789
790#ifdef SIGHUP
791 retry_sigaction(FIL__, __LINE__, SIGHUP, &act2, &oldact);
792#endif
793#ifdef SIGABRT
794 retry_sigaction(FIL__, __LINE__, SIGABRT, &act2, &oldact);
795#endif
796#ifdef SIGUSR1
797 retry_sigaction(FIL__, __LINE__, SIGUSR1, &act2, &oldact);
798#endif
799#ifdef SIGUSR2
800 retry_sigaction(FIL__, __LINE__, SIGUSR2, &act2, &oldact);
801#endif
802#ifdef SIGQUIT
803 retry_sigaction(FIL__, __LINE__, SIGQUIT, &act2, &oldact);
804#endif
805#ifdef SIGTERM
806 retry_sigaction(FIL__, __LINE__, SIGTERM, &act, &oldact);
807#endif
808
809 /* fatal signals that may cause termination */
810
811#ifdef SIGILL
812 retry_sigaction(FIL__, __LINE__, SIGILL, &act_fast, &oldact);
813#endif
814#ifndef SL_DEBUG
815#ifdef SIGFPE
816 retry_sigaction(FIL__, __LINE__, SIGFPE, &act_fast, &oldact);
817#endif
818#endif
819#ifdef SIGSEGV
820 retry_sigaction(FIL__, __LINE__, SIGSEGV, &act_fast, &oldact);
821#endif
822#ifdef SIGBUS
823 retry_sigaction(FIL__, __LINE__, SIGBUS, &act_fast, &oldact);
824#endif
825
826 /* other signals */
827
828#ifdef SIGINT
829 retry_sigaction(FIL__, __LINE__, SIGINT, &act, &oldact);
830#endif
831#ifdef SIGPIPE
832#ifdef HAVE_PTHREAD
833 retry_sigaction(FIL__, __LINE__, SIGPIPE, &ignact, &oldact);
834#else
835 retry_sigaction(FIL__, __LINE__, SIGPIPE, &act, &oldact);
836#endif
837#endif
838#ifdef SIGALRM
839 retry_sigaction(FIL__, __LINE__, SIGALRM, &ignact, &oldact);
840#endif
841#ifdef SIGTSTP
842 retry_sigaction(FIL__, __LINE__, SIGTSTP, &ignact, &oldact);
843#endif
844
845#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
846#ifdef SIGTTOU
847 if (goDaemon == 1)
848 retry_sigaction(FIL__, __LINE__, SIGTTOU, &act2, &oldact);
849 else
850 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
851#endif
852#ifdef SIGTTIN
853 if (goDaemon == 1)
854 retry_sigaction(FIL__, __LINE__, SIGTTIN, &act2, &oldact);
855 else
856 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
857#endif
858#else
859#ifdef SIGTTOU
860 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
861#endif
862#ifdef SIGTTIN
863 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
864#endif
865#endif
866
867#ifdef SIGTRAP
868#if !defined(SCREW_IT_UP)
869 retry_sigaction(FIL__, __LINE__, SIGTRAP, &act, &oldact);
870#endif
871#endif
872
873#ifdef SIGPOLL
874 retry_sigaction(FIL__, __LINE__, SIGPOLL, &ignact, &oldact);
875#endif
876#if defined(SIGPROF) && !defined(SH_PROFILE)
877 retry_sigaction(FIL__, __LINE__, SIGPROF, &ignact, &oldact);
878#endif
879#ifdef SIGSYS
880 retry_sigaction(FIL__, __LINE__, SIGSYS, &act, &oldact);
881#endif
882#ifdef SIGURG
883 retry_sigaction(FIL__, __LINE__, SIGURG, &ignact, &oldact);
884#endif
885#if defined(SIGVTALRM) && !defined(SH_PROFILE)
886 retry_sigaction(FIL__, __LINE__, SIGVTALRM, &ignact, &oldact);
887#endif
888#ifdef SIGXCPU
889 retry_sigaction(FIL__, __LINE__, SIGXCPU, &act, &oldact);
890#endif
891#ifdef SIGXFSZ
892 retry_sigaction(FIL__, __LINE__, SIGXFSZ, &act, &oldact);
893#endif
894
895#ifdef SIGEMT
896 retry_sigaction(FIL__, __LINE__, SIGEMT, &ignact, &oldact);
897#endif
898#ifdef SIGSTKFLT
899 retry_sigaction(FIL__, __LINE__, SIGSTKFLT, &act, &oldact);
900#endif
901#ifdef SIGIO
902 retry_sigaction(FIL__, __LINE__, SIGIO, &ignact, &oldact);
903#endif
904#ifdef SIGPWR
905 retry_sigaction(FIL__, __LINE__, SIGPWR, &act, &oldact);
906#endif
907
908#ifdef SIGLOST
909 retry_sigaction(FIL__, __LINE__, SIGLOST, &ignact, &oldact);
910#endif
911#ifdef SIGUNUSED
912 retry_sigaction(FIL__, __LINE__, SIGUNUSED, &ignact, &oldact);
913#endif
914
915 SL_RET0(_("sh_unix_siginstall"));
916}
917
918/* ---------------------------------------------------------------- */
919
920/* checksum the own binary
921 */
922int sh_unix_self_hash (const char * c)
923{
924 char message[512];
925 char hashbuf[KEYBUF_SIZE];
926
927 SL_ENTER(_("sh_unix_self_hash"));
928
929 if (c == NULL)
930 {
931 sh.exec.path[0] = '\0';
932 SL_RETURN((0), _("sh_unix_self_hash"));
933 }
934 sl_strlcpy(sh.exec.path, c, SH_PATHBUF);
935
936 sl_strlcpy(sh.exec.hash,
937 sh_tiger_hash (c, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
938 KEY_LEN+1);
939 sl_snprintf(message, 512, _("%s has checksum: %s"),
940 sh.exec.path, sh.exec.hash);
941 message[511] = '\0';
942 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
943 message, _("sh_unix_self_hash"));
944 if (0 == sl_strcmp(sh.exec.hash, SH_KEY_NULL ))
945 {
946 dlog(1, FIL__, __LINE__,
947 _("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"),
948 sh.exec.path, sl_get_errmsg(), (int) sl_ret_euid());
949 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_NOACCESS,
950 (long) sh.real.uid, c);
951 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
952 }
953 SL_RETURN((0), _("sh_unix_self_hash"));
954}
955
956int sh_unix_self_check ()
957{
958 char newhash[KEY_LEN+1];
959 char message[512];
960 char hashbuf[KEYBUF_SIZE];
961
962 SL_ENTER(_("sh_unix_self_check"));
963 if (sh.exec.path == NULL || sh.exec.path[0] == '\0')
964 SL_RETURN((0), _("sh_unix_self_check"));
965
966 sl_strlcpy(newhash,
967 sh_tiger_hash (sh.exec.path, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
968 KEY_LEN+1);
969 if (0 == sl_strncmp(sh.exec.hash,
970 newhash,
971 KEY_LEN))
972 SL_RETURN((0), _("sh_unix_self_check"));
973
974
975 dlog(1, FIL__, __LINE__,
976 _("The checksum of the executable: %s has changed since startup (%s -> %s).\n"),
977 sh.exec.path, sh.exec.hash, newhash);
978
979 sl_snprintf(message, 512,
980 _("The checksum of %s has changed since startup (%s -> %s)"),
981 sh.exec.path, sh.exec.hash, newhash);
982 message[511] = '\0';
983
984 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
985 message, _("sh_unix_self_check"));
986 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_E_AUTH,
987 sh.exec.path);
988 SL_RETURN((-1), _("sh_unix_self_check"));
989}
990
991
992/* ---------------------------------------------------------------- */
993
994
995/* added Tue Feb 22 10:36:44 NFT 2000 Rainer Wichmann */
996static int tf_add_trusted_user_int(const char * c)
997{
998 struct passwd * w;
999 int count;
1000 uid_t pwid = (uid_t)-1;
1001
1002#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1003 struct passwd pwd;
1004 char * buffer;
1005#endif
1006
1007 SL_ENTER(_("tf_add_trusted_user_int"));
1008
1009 /* First check for a user name.
1010 */
1011#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1012 buffer = SH_ALLOC(SH_PWBUF_SIZE);
1013 sh_getpwnam_r(c, &pwd, buffer, SH_PWBUF_SIZE, &w);
1014#else
1015 w = sh_getpwnam(c);
1016#endif
1017
1018 if ((w != NULL) && ((pwid = w->pw_uid) > 0))
1019 goto succe;
1020
1021 /* Failed, so check for a numerical value.
1022 */
1023 pwid = strtol(c, (char **)NULL, 10);
1024 if (pwid > 0 && pwid < 65535)
1025 goto succe;
1026
1027 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1028 _("add trusted user"), c);
1029#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1030 SH_FREE(buffer);
1031#endif
1032 SL_RETURN((-1), _("tf_add_trusted_user_int"));
1033
1034 succe:
1035 count = sl_trust_add_user(pwid);
1036#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1037 SH_FREE(buffer);
1038#endif
1039 SL_RETURN((count), _("tf_add_trusted_user_int"));
1040}
1041
1042int tf_add_trusted_user(const char * c)
1043{
1044 int i;
1045 char * q;
1046 char * p = sh_util_strdup (c);
1047#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1048 char * saveptr;
1049#endif
1050
1051 SL_ENTER(_("tf_add_trusted_user"));
1052
1053#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1054 q = strtok_r(p, ", \t", &saveptr);
1055#else
1056 q = strtok(p, ", \t");
1057#endif
1058 if (!q)
1059 {
1060 SH_FREE(p);
1061 SL_RETURN((-1), _("tf_add_trusted_user"));
1062 }
1063 while (q)
1064 {
1065 i = tf_add_trusted_user_int(q);
1066 if (SL_ISERROR(i))
1067 {
1068 SH_FREE(p);
1069 SL_RETURN((i), _("tf_add_trusted_user"));
1070 }
1071#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1072 q = strtok_r(NULL, ", \t", &saveptr);
1073#else
1074 q = strtok(NULL, ", \t");
1075#endif
1076 }
1077 SH_FREE(p);
1078 SL_RETURN((0), _("tf_add_trusted_user"));
1079}
1080
1081extern uid_t sl_trust_baduid(void);
1082extern gid_t sl_trust_badgid(void);
1083
1084#if defined(HOST_IS_CYGWIN) || defined(__cygwin__) || defined(__CYGWIN32__) || defined(__CYGWIN__)
1085int tf_trust_check (const char * file, int mode)
1086{
1087 (void) file;
1088 (void) mode;
1089 return 0;
1090}
1091#else
1092int tf_trust_check (const char * file, int mode)
1093{
1094 char * tmp;
1095 char * tmp2;
1096 char * p;
1097 int status;
1098 int level;
1099 uid_t ff_euid;
1100
1101 SL_ENTER(_("tf_trust_check"));
1102
1103 if (mode == SL_YESPRIV)
1104 sl_get_euid(&ff_euid);
1105 else
1106 sl_get_ruid(&ff_euid);
1107
1108#if defined(SH_WITH_SERVER)
1109 if (0 == sl_ret_euid()) /* privileges not dropped yet */
1110 {
1111#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1112 struct passwd pwd;
1113 char * buffer = SH_ALLOC(SH_PWBUF_SIZE);
1114 struct passwd * tempres;
1115 sh_getpwnam_r(DEFAULT_IDENT, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
1116#else
1117 struct passwd * tempres = sh_getpwnam(DEFAULT_IDENT);
1118#endif
1119
1120 if (!tempres)
1121 {
1122 dlog(1, FIL__, __LINE__,
1123 _("User %s does not exist. Please add the user to your system.\n"),
1124 DEFAULT_IDENT);
1125 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
1126 }
1127 ff_euid = tempres->pw_uid;
1128#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1129 SH_FREE(buffer);
1130#endif
1131 }
1132#endif
1133
1134 status = sl_trustfile_euid(file, ff_euid);
1135
1136 if ( SL_ENONE != status)
1137 {
1138 if (status == SL_ESTAT)
1139 level = SH_ERR_ALL;
1140 else
1141 level = SH_ERR_ERR;
1142
1143 tmp = sh_util_safe_name (file);
1144 p = sl_trust_errfile();
1145 if (p && *p != '\0')
1146 {
1147 tmp2 = sh_util_safe_name (sl_trust_errfile());
1148 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST2,
1149 sl_error_string(status), tmp, tmp2);
1150 SH_FREE(tmp2);
1151 }
1152 else
1153 {
1154 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST1,
1155 sl_error_string(status), tmp);
1156 }
1157 SH_FREE(tmp);
1158
1159 if (status == SL_EBADUID || status == SL_EBADGID ||
1160 status == SL_EBADOTH || status == SL_ETRUNC ||
1161 status == SL_EINTERNAL )
1162 {
1163 switch (status) {
1164 case SL_EINTERNAL:
1165 dlog(1, FIL__, __LINE__,
1166 _("An internal error occured in the trustfile function.\n"));
1167 break;
1168 case SL_ETRUNC:
1169 tmp = sh_util_safe_name (file);
1170 dlog(1, FIL__, __LINE__,
1171 _("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"),
1172 tmp);
1173 SH_FREE(tmp);
1174 break;
1175 case SL_EBADOTH:
1176 tmp = sh_util_safe_name (file);
1177 p = sl_trust_errfile();
1178 dlog(1, FIL__, __LINE__,
1179 _("The path element: %s\nin the filename: %s is world writeable.\n"),
1180 p, tmp);
1181 SH_FREE(tmp);
1182 break;
1183 case SL_EBADUID:
1184 tmp = sh_util_safe_name (file);
1185 p = sl_trust_errfile();
1186 dlog(1, FIL__, __LINE__,
1187 _("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"),
1188 (UID_CAST)sl_trust_baduid(), p, tmp);
1189 SH_FREE(tmp);
1190 break;
1191 case SL_EBADGID:
1192 tmp = sh_util_safe_name (file);
1193 p = sl_trust_errfile();
1194 dlog(1, FIL__, __LINE__,
1195 _("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"),
1196 p, tmp, (UID_CAST)sl_trust_badgid(),
1197 (UID_CAST)sl_trust_baduid());
1198 SH_FREE(tmp);
1199 break;
1200 default:
1201 break;
1202 }
1203
1204 SL_RETURN((-1), _("tf_trust_check"));
1205 }
1206 }
1207
1208 SL_RETURN((0), _("tf_trust_check"));
1209}
1210#endif
1211
1212#ifdef HAVE_INITGROUPS
1213#ifdef HOST_IS_OSF
1214int sh_unix_initgroups ( char * in_user, gid_t in_gid)
1215#else
1216int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1217#endif
1218{
1219 int status = -1;
1220 status = sh_initgroups (in_user, in_gid);
1221 if (status < 0)
1222 {
1223 if (errno == EPERM)
1224 return 0;
1225 if (errno == EINVAL)
1226 return 0;
1227 return -1;
1228 }
1229 return 0;
1230}
1231#else
1232int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1233{
1234 (void) in_user;
1235 (void) in_gid;
1236 return 0;
1237}
1238#endif
1239
1240#ifdef HAVE_INITGROUPS
1241char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len);
1242int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1243{
1244 int status = -1;
1245 char user[SH_MINIBUF];
1246
1247 SL_ENTER(_("sh_unix_initgroups2"));
1248
1249 if (NULL == sh_unix_getUIDname (SH_ERR_ERR, in_pid, user, sizeof(user)))
1250 SL_RETURN((-1), _("sh_unix_initgroups2"));
1251 status = sh_initgroups (user, in_gid);
1252 if (status < 0)
1253 {
1254 if (errno == EPERM)
1255 status = 0;
1256 if (errno == EINVAL)
1257 status = 0;
1258 }
1259 SL_RETURN((status), _("sh_unix_initgroups2"));
1260}
1261#else
1262int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1263{
1264 (void) in_pid;
1265 (void) in_gid;
1266 return 0;
1267}
1268#endif
1269
1270void sh_unix_closeall (int fd, int except, int inchild)
1271{
1272 int fdx = fd;
1273#ifdef _SC_OPEN_MAX
1274 int fdlimit = sysconf (_SC_OPEN_MAX);
1275#else
1276#ifdef OPEN_MAX
1277 int fdlimit = OPEN_MAX;
1278#else
1279 int fdlimit = _POSIX_OPEN_MAX;
1280#endif
1281#endif
1282
1283 SL_ENTER(_("sh_unix_closeall"));
1284
1285 /* can't happen - so fix it :-(
1286 */
1287 if (fdlimit < 0)
1288 fdlimit = 20; /* POSIX lower limit */
1289
1290 if (fdlimit > 65536)
1291 fdlimit = 65536;
1292
1293 if (!inchild)
1294 sl_dropall (fdx, except);
1295 else
1296 sl_dropall_dirty (fdx, except);
1297
1298 /* Close everything from fd (inclusive) up to fdlimit (exclusive).
1299 */
1300 while (fd < fdlimit)
1301 {
1302 if (fd == except)
1303 fd++;
1304 else if (slib_do_trace != 0 && fd == slib_trace_fd)
1305 fd++;
1306 else
1307 sl_close_fd(FIL__, __LINE__, fd++);
1308 }
1309
1310 SL_RET0(_("sh_unix_closeall"));
1311}
1312
1313static void sh_unix_setlimits(void)
1314{
1315 struct rlimit limits;
1316
1317 SL_ENTER(_("sh_unix_setlimits"));
1318
1319 limits.rlim_cur = RLIM_INFINITY;
1320 limits.rlim_max = RLIM_INFINITY;
1321
1322#ifdef RLIMIT_CPU
1323 setrlimit (RLIMIT_CPU, &limits);
1324#endif
1325#ifdef RLIMIT_FSIZE
1326 setrlimit (RLIMIT_FSIZE, &limits);
1327#endif
1328#ifdef RLIMIT_DATA
1329 setrlimit (RLIMIT_DATA, &limits);
1330#endif
1331#ifdef RLIMIT_STACK
1332 setrlimit (RLIMIT_STACK, &limits);
1333#endif
1334#ifdef RLIMIT_RSS
1335 setrlimit (RLIMIT_RSS, &limits);
1336#endif
1337#ifdef RLIMIT_NPROC
1338 setrlimit (RLIMIT_NPROC, &limits);
1339#endif
1340#ifdef RLIMIT_MEMLOCK
1341 setrlimit (RLIMIT_MEMLOCK, &limits);
1342#endif
1343
1344#if !defined(SL_DEBUG)
1345 /* no core dumps
1346 */
1347 limits.rlim_cur = 0;
1348 limits.rlim_max = 0;
1349#ifdef RLIMIT_CORE
1350 setrlimit (RLIMIT_CORE, &limits);
1351#endif
1352#else
1353#ifdef RLIMIT_CORE
1354 setrlimit (RLIMIT_CORE, &limits);
1355#endif
1356#endif
1357
1358 limits.rlim_cur = 1024;
1359 limits.rlim_max = 1024;
1360
1361#if defined(RLIMIT_NOFILE)
1362 setrlimit (RLIMIT_NOFILE, &limits);
1363#elif defined(RLIMIT_OFILE)
1364 setrlimit (RLIMIT_OFILE, &limits);
1365#endif
1366
1367 SL_RET0(_("sh_unix_setlimits"));
1368}
1369
1370static void sh_unix_copyenv(void)
1371{
1372 char ** env0 = environ;
1373 char ** env1;
1374 int envlen = 0;
1375 size_t len;
1376
1377 SL_ENTER(_("sh_unix_copyenv"));
1378
1379 while (env0 != NULL && env0[envlen] != NULL) {
1380 /* printf("%2d: %s\n", envlen, env0[envlen]); */
1381 ++envlen;
1382 }
1383 ++envlen;
1384
1385 /* printf("-> %2d: slots allocated\n", envlen); */
1386 env1 = malloc (sizeof(char *) * envlen); /* only once */
1387 if (env1 == NULL)
1388 {
1389 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1390 SL_RET0(_("sh_unix_copyenv"));
1391 }
1392 env0 = environ;
1393 envlen = 0;
1394
1395 while (env0 != NULL && env0[envlen] != NULL) {
1396 len = strlen(env0[envlen]) + 1;
1397 env1[envlen] = malloc (len); /* only once */
1398 if (env1[envlen] == NULL)
1399 {
1400 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1401 SL_RET0(_("sh_unix_copyenv"));
1402 }
1403 sl_strlcpy(env1[envlen], env0[envlen], len);
1404 ++envlen;
1405 }
1406 env1[envlen] = NULL;
1407
1408 environ = env1;
1409 SL_RET0(_("sh_unix_copyenv"));
1410}
1411
1412/* delete all environment variables
1413 */
1414static void sh_unix_zeroenv(void)
1415{
1416 char * c;
1417 char ** env;
1418
1419 SL_ENTER(_("sh_unix_zeroenv"));
1420
1421 sh_unix_copyenv();
1422 env = environ;
1423
1424 while (env != NULL && *env != NULL) {
1425 c = strchr ((*env), '=');
1426#ifdef WITH_MYSQL
1427 /*
1428 * Skip the MYSQL_UNIX_PORT environment variable; MySQL may need it.
1429 */
1430 if (0 == sl_strncmp((*env), _("MYSQL_UNIX_PORT="), 16))
1431 {
1432 ++(env);
1433 continue;
1434 }
1435 if (0 == sl_strncmp((*env), _("MYSQL_TCP_PORT="), 15))
1436 {
1437 ++(env);
1438 continue;
1439 }
1440 if (0 == sl_strncmp((*env), _("MYSQL_HOME="), 11))
1441 {
1442 ++(env);
1443 continue;
1444 }
1445#endif
1446#ifdef WITH_ORACLE
1447 /*
1448 * Skip the ORACLE_HOME environment variable; Oracle may need it.
1449 */
1450 if (0 == sl_strncmp((*env), _("ORACLE_HOME="), 12))
1451 {
1452 ++(env);
1453 continue;
1454 }
1455#endif
1456 /*
1457 * Skip the TZ environment variable.
1458 */
1459 if (0 == sl_strncmp((*env), _("TZ="), 3))
1460 {
1461 ++(env);
1462 continue;
1463 }
1464 ++(env);
1465 if (c != NULL)
1466 {
1467 ++c;
1468 while ((*c) != '\0') {
1469 (*c) = '\0';
1470 ++c;
1471 }
1472 }
1473 }
1474
1475#ifdef HAVE_TZSET
1476 tzset();
1477#endif
1478
1479 SL_RET0(_("sh_unix_zeroenv"));
1480}
1481
1482
1483static void sh_unix_resettimer(void)
1484{
1485 struct itimerval this_timer;
1486
1487 SL_ENTER(_("sh_unix_resettimer"));
1488
1489 this_timer.it_value.tv_sec = 0;
1490 this_timer.it_value.tv_usec = 0;
1491
1492 this_timer.it_interval.tv_sec = 0;
1493 this_timer.it_interval.tv_usec = 0;
1494
1495 setitimer(ITIMER_REAL, &this_timer, NULL);
1496#if !defined(SH_PROFILE)
1497 setitimer(ITIMER_VIRTUAL, &this_timer, NULL);
1498 setitimer(ITIMER_PROF, &this_timer, NULL);
1499#endif
1500
1501 SL_RET0(_("sh_unix_resettimer"));
1502}
1503
1504static void sh_unix_resetsignals(void)
1505{
1506 int sig_num;
1507#ifdef NSIG
1508 int max_sig = NSIG;
1509#else
1510 int max_sig = 255;
1511#endif
1512 int test;
1513 int status;
1514 struct sigaction act;
1515#if !defined(SH_PROFILE)
1516 struct sigaction oldact;
1517#endif
1518
1519 sigset_t set_proc;
1520
1521 SL_ENTER(_("sh_unix_resetsignals"));
1522 /*
1523 * Reset the current signal mask (inherited from parent process).
1524 */
1525
1526 sigfillset(&set_proc);
1527
1528 do {
1529 errno = 0;
1530 test = sigprocmask(SIG_UNBLOCK, &set_proc, NULL);
1531 } while (test < 0 && errno == EINTR);
1532
1533 /*
1534 * Reset signal handling.
1535 */
1536
1537 act.sa_handler = SIG_DFL; /* signal action */
1538 sigemptyset( &act.sa_mask ); /* set an empty mask */
1539 act.sa_flags = 0; /* init sa_flags */
1540
1541 for (sig_num = 1; sig_num <= max_sig; ++sig_num)
1542 {
1543#if !defined(SH_PROFILE)
1544 test = retry_sigaction(FIL__, __LINE__, sig_num, &act, &oldact);
1545#else
1546 test = 0;
1547#endif
1548 if ((test == -1) && (errno != EINVAL))
1549 {
1550 char errbuf[SH_ERRBUF_SIZE];
1551 status = errno;
1552 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_SIG,
1553 sh_error_message (status, errbuf, sizeof(errbuf)), sig_num);
1554 }
1555 }
1556
1557 SL_RET0(_("sh_unix_resetsignals"));
1558}
1559
1560/* Get the local hostname (FQDN)
1561 */
1562static char * sh_tolower (char * s)
1563{
1564 char * ret = s;
1565 if (s)
1566 {
1567 for (; *s; ++s)
1568 {
1569 *s = tolower((unsigned char) *s);
1570 }
1571 }
1572 return ret;
1573}
1574
1575
1576#include <sys/socket.h>
1577
1578/* Required for BSD
1579 */
1580#ifdef HAVE_NETINET_IN_H
1581#include <netinet/in.h>
1582#endif
1583
1584#include <arpa/inet.h>
1585
1586const char * sh_unix_h_name (struct hostent * host_entry)
1587{
1588 char ** p;
1589 if (strchr(host_entry->h_name, '.')) {
1590 return host_entry->h_name;
1591 } else {
1592 for (p = host_entry->h_aliases; *p; ++p) {
1593 if (strchr(*p, '.'))
1594 return *p;
1595 }
1596 }
1597 return host_entry->h_name;
1598}
1599
1600/* uname() on FreeBSD is broken, because the 'nodename' buf is too small
1601 * to hold a valid (leftmost) domain label.
1602 */
1603#if defined(HAVE_UNAME) && !defined(HOST_IS_FREEBSD)
1604#include <sys/utsname.h>
1605void sh_unix_localhost()
1606{
1607 struct utsname buf;
1608 int i;
1609 int ddot;
1610 int len;
1611 char * p;
1612 char hostname[256];
1613 char numeric[SH_IP_BUF];
1614 char * canonical;
1615
1616
1617 SL_ENTER(_("sh_unix_localhost"));
1618
1619 (void) uname (&buf);
1620 /* flawfinder: ignore */ /* ff bug, ff sees system() */
1621 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1622 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1623 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1624
1625 /* Workaround for cases where nodename could be
1626 * a truncated FQDN.
1627 */
1628 if (strlen(buf.nodename) == (sizeof(buf.nodename)-1))
1629 {
1630 p = strchr(buf.nodename, '.');
1631 if (NULL != p) {
1632 *p = '\0';
1633 sl_strlcpy(hostname, buf.nodename, 256);
1634 } else {
1635#ifdef HAVE_GETHOSTNAME
1636 if (0 != gethostname(hostname, 256))
1637 {
1638 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1639 _("nodename returned by uname may be truncated"),
1640 _("sh_unix_localhost"));
1641 sl_strlcpy (hostname, buf.nodename, 256);
1642 }
1643 else
1644 {
1645 hostname[255] = '\0';
1646 }
1647#else
1648 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1649 _("nodename returned by uname may be truncated"),
1650 _("sh_unix_localhost"));
1651 sl_strlcpy(hostname, buf.nodename, 256);
1652#endif
1653 }
1654 }
1655 else
1656 {
1657 sl_strlcpy(hostname, buf.nodename, 256);
1658 }
1659
1660 canonical = sh_ipvx_canonical(hostname, numeric, sizeof(numeric));
1661
1662 if (canonical == NULL)
1663 {
1664 sl_strlcpy (sh.host.name, hostname, SH_PATHBUF);
1665 sh_tolower (sh.host.name);
1666 }
1667 else
1668 {
1669 sl_strlcpy (sh.host.name, canonical, SH_PATHBUF);
1670 SH_FREE(canonical);
1671 }
1672
1673 /* check whether it looks like a FQDN
1674 */
1675 len = sl_strlen(sh.host.name);
1676 ddot = 0;
1677 for (i = 0; i < len; ++i)
1678 if (sh.host.name[i] == '.') ++ddot;
1679
1680 if (ddot == 0)
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 sl_strlcpy (sh.host.name, numeric, SH_PATHBUF);
1686 SL_RET0(_("sh_unix_localhost"));
1687 }
1688
1689 if (sh_ipvx_is_numeric(sh.host.name))
1690 {
1691 dlog(1, FIL__, __LINE__,
1692 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nRather, it resolves this to %s.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1693 hostname, sh.host.name);
1694 }
1695
1696 SL_RET0(_("sh_unix_localhost"));
1697}
1698
1699#else
1700
1701/*
1702 * --FreeBSD code
1703 */
1704#if defined(HAVE_UNAME)
1705#include <sys/utsname.h>
1706#endif
1707void sh_unix_localhost()
1708{
1709#if defined(HAVE_UNAME)
1710 struct utsname buf;
1711#endif
1712 int i;
1713 int ddot;
1714 int len;
1715 char hostname[1024];
1716 char numeric[SH_IP_BUF];
1717 char * canonical;
1718
1719 SL_ENTER(_("sh_unix_localhost"));
1720
1721#if defined(HAVE_UNAME)
1722 (void) uname (&buf);
1723 /* flawfinder: ignore */ /* ff bug, ff sees system() */
1724 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1725 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1726 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1727#endif
1728
1729 (void) gethostname (hostname, 1024);
1730 hostname[1023] = '\0';
1731
1732 canonical = sh_ipvx_canonical(hostname, numeric, sizeof(numeric));
1733
1734 if (canonical == NULL)
1735 {
1736 sl_strlcpy (sh.host.name, hostname, SH_PATHBUF);
1737 sh_tolower (sh.host.name);
1738 }
1739 else
1740 {
1741 sl_strlcpy (sh.host.name, canonical, SH_PATHBUF);
1742 SH_FREE(canonical);
1743 }
1744
1745 /* check whether it looks like a FQDN
1746 */
1747 len = sl_strlen(sh.host.name);
1748 ddot = 0;
1749 for (i = 0; i < len; ++i)
1750 if (sh.host.name[i] == '.') ++ddot;
1751 if (ddot == 0)
1752 {
1753 dlog(1, FIL__, __LINE__,
1754 _("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"),
1755 hostname, sh.host.name);
1756 sl_strlcpy (sh.host.name, numeric, SH_PATHBUF);
1757 SL_RET0(_("sh_unix_localhost"));
1758 }
1759
1760 if (sh_ipvx_is_numeric(sh.host.name))
1761 {
1762 dlog(1, FIL__, __LINE__,
1763 _("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"),
1764 hostname, sh.host.name);
1765 }
1766
1767 SL_RET0(_("sh_unix_localhost"));
1768}
1769#endif
1770
1771
1772void sh_unix_memlock()
1773{
1774 SL_ENTER(_("sh_unix_memlock"));
1775
1776 /* do this before dropping privileges
1777 */
1778#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
1779 if (skey->mlock_failed == SL_FALSE)
1780 {
1781 if ( (-1) == sh_unix_mlock( FIL__, __LINE__,
1782 (char *) skey, sizeof (sh_key_t)) )
1783 {
1784 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1785 skey->mlock_failed = SL_TRUE;
1786 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1787 }
1788 }
1789#else
1790 if (skey->mlock_failed == SL_FALSE)
1791 {
1792 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1793 skey->mlock_failed = SL_TRUE;
1794 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1795 }
1796#endif
1797
1798 SL_RET0(_("sh_unix_memlock"));
1799}
1800
1801#ifdef SH_WITH_SERVER
1802char * chroot_dir = NULL;
1803
1804int sh_unix_set_chroot(const char * str)
1805{
1806 size_t len;
1807 static int block = 0;
1808
1809 if (block == 1)
1810 return 0;
1811
1812 if (str && *str == '/')
1813 {
1814 len = strlen(str) + 1;
1815 chroot_dir = malloc(strlen(str) + 1); /* only once */
1816 if (!chroot_dir)
1817 {
1818 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1819 return 1;
1820 }
1821 sl_strlcpy(chroot_dir, str, len);
1822 block = 1;
1823 return 0;
1824 }
1825 return 1;
1826}
1827
1828int sh_unix_chroot(void)
1829{
1830 int status;
1831
1832 if (chroot_dir != NULL)
1833 {
1834 status = retry_aud_chdir(FIL__, __LINE__, chroot_dir);
1835 if ( (-1) == status )
1836 {
1837 char errbuf[SH_ERRBUF_SIZE];
1838 status = errno;
1839 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
1840 sh_error_message (status, errbuf, sizeof(errbuf)), chroot_dir);
1841 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1842 }
1843 /* flawfinder: ignore */
1844 return (chroot(chroot_dir));
1845 }
1846 return 0;
1847}
1848/* #ifdef SH_WITH_SERVER */
1849#else
1850int sh_unix_chroot(void) { return 0; }
1851#endif
1852
1853/* daemon mode
1854 */
1855static int block_setdeamon = 0;
1856
1857int sh_unix_setdeamon(const char * dummy)
1858{
1859 int res = 0;
1860
1861 SL_ENTER(_("sh_unix_setdeamon"));
1862
1863 if (block_setdeamon != 0)
1864 SL_RETURN((0),_("sh_unix_setdeamon"));
1865
1866 if (dummy == NULL)
1867 sh.flag.isdaemon = ON;
1868 else
1869 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1870
1871 if (sh.flag.opts == S_TRUE)
1872 block_setdeamon = 1;
1873
1874 SL_RETURN(res, _("sh_unix_setdeamon"));
1875}
1876#if defined(HAVE_LIBPRELUDE)
1877#include "sh_prelude.h"
1878#endif
1879
1880int sh_unix_setnodeamon(const char * dummy)
1881{
1882 int res = 0;
1883
1884 SL_ENTER(_("sh_unix_setnodeamon"));
1885
1886 if (block_setdeamon != 0)
1887 SL_RETURN((0),_("sh_unix_setmodeamon"));
1888
1889 if (dummy == NULL)
1890 sh.flag.isdaemon = OFF;
1891 else
1892 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1893
1894 if (sh.flag.opts == S_TRUE)
1895 block_setdeamon = 1;
1896
1897 SL_RETURN(res, _("sh_unix_setnodeamon"));
1898}
1899
1900int sh_unix_init(int goDaemon)
1901{
1902 int status;
1903 uid_t uid;
1904 pid_t oldpid = getpid();
1905#if defined(SH_WITH_SERVER)
1906 extern int sh_socket_open_int (void);
1907#endif
1908 char errbuf[SH_ERRBUF_SIZE];
1909
1910 SL_ENTER(_("sh_unix_init"));
1911
1912 /* fork twice, exit the parent process
1913 */
1914 if (goDaemon == 1) {
1915
1916 switch (aud_fork(FIL__, __LINE__)) {
1917 case 0: break; /* child process continues */
1918 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1919 default: aud__exit(FIL__, __LINE__, 0); /* parent process exits */
1920 }
1921
1922 /* Child processes do not inherit page locks across a fork.
1923 * Error in next fork would return in this (?) thread of execution.
1924 */
1925 sh_unix_memlock();
1926
1927 setsid(); /* should not fail */
1928 sh.pid = (UINT64) getpid();
1929
1930 switch (aud_fork(FIL__, __LINE__)) {
1931 case 0: break; /* child process continues */
1932 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1933 default: aud__exit(FIL__, __LINE__, 0); /* parent process exits */
1934 }
1935
1936 /* Child processes do not inherit page locks across a fork.
1937 */
1938 sh_unix_memlock();
1939 sh.pid = (UINT64) getpid();
1940
1941 } else {
1942 setsid(); /* should not fail */
1943 }
1944
1945 /* set working directory
1946 */
1947#ifdef SH_PROFILE
1948 status = 0;
1949#else
1950 status = retry_aud_chdir(FIL__, __LINE__, "/");
1951#endif
1952 if ( (-1) == status )
1953 {
1954 status = errno;
1955 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
1956 sh_error_message (status, errbuf, sizeof(errbuf)), "/");
1957 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1958 }
1959
1960 /* reset timers
1961 */
1962 sh_unix_resettimer();
1963
1964 /* signal handlers
1965 */
1966 sh_unix_resetsignals();
1967#if defined(SCREW_IT_UP)
1968 sh_sigtrap_prepare();
1969#endif
1970 sh_unix_siginstall (goDaemon);
1971
1972 /* set file creation mask
1973 */
1974 (void) umask (0); /* should not fail */
1975
1976 /* set resource limits to maximum, and
1977 * core dump size to zero
1978 */
1979 sh_unix_setlimits();
1980
1981 /* zero out the environment (like PATH='\0')
1982 */
1983 sh_unix_zeroenv();
1984
1985 if (goDaemon == 1)
1986 {
1987 /* Close first tree file descriptors
1988 */
1989 sl_close_fd (FIL__, __LINE__, 0); /* if running as daemon */
1990 sl_close_fd (FIL__, __LINE__, 1); /* if running as daemon */
1991 sl_close_fd (FIL__, __LINE__, 2); /* if running as daemon */
1992
1993 /* Enable full error logging
1994 */
1995 sh_error_only_stderr (S_FALSE);
1996
1997 /* open first three streams to /dev/null
1998 */
1999 status = aud_open(FIL__, __LINE__, SL_NOPRIV, _("/dev/null"), O_RDWR, 0);
2000 if (status < 0)
2001 {
2002 status = errno;
2003 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2004 sh_error_message(status, errbuf, sizeof(errbuf)), _("open"));
2005 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2006 }
2007
2008 status = retry_aud_dup(FIL__, __LINE__, 0);
2009 if (status >= 0)
2010 retry_aud_dup(FIL__, __LINE__, 0);
2011
2012 if (status < 0)
2013 {
2014 status = errno;
2015 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2016 sh_error_message(status, errbuf, sizeof(errbuf)), _("dup"));
2017 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2018 }
2019
2020 sh_error_enable_unsafe (S_TRUE);
2021#if defined(HAVE_LIBPRELUDE)
2022 sh_prelude_reset ();
2023#endif
2024
2025 /* --- wait until parent has exited ---
2026 */
2027 while (1 == 1)
2028 {
2029 errno = 0;
2030 if (0 > aud_kill (FIL__, __LINE__, oldpid, 0) && errno == ESRCH)
2031 {
2032 break;
2033 }
2034 retry_msleep(0, 1);
2035 }
2036
2037 /* write PID file
2038 */
2039 status = sh_unix_write_pid_file();
2040 if (status < 0)
2041 {
2042 sl_get_euid(&uid);
2043 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_PIDFILE,
2044 (long) uid, sh.srvlog.alt);
2045 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2046 }
2047#if defined(SH_WITH_SERVER)
2048 sh_socket_open_int ();
2049#endif
2050 }
2051 else
2052 {
2053 sh_error_enable_unsafe (S_TRUE);
2054#if defined(HAVE_LIBPRELUDE)
2055 sh_prelude_reset ();
2056#endif
2057#if defined(SH_WITH_SERVER)
2058 sh_socket_open_int ();
2059#endif
2060 }
2061
2062 /* chroot (this is a no-op if no chroot dir is specified
2063 */
2064 status = sh_unix_chroot();
2065 if (status < 0)
2066 {
2067 status = errno;
2068 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2069 sh_error_message(status, errbuf, sizeof(errbuf)), _("chroot"));
2070 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2071 }
2072
2073 /* drop capabilities
2074 */
2075 sl_drop_cap();
2076
2077 SL_RETURN((0),_("sh_unix_init"));
2078}
2079
2080/* --- run a command, securely --- */
2081
2082int sh_unix_run_command (const char * str)
2083{
2084 pid_t pid;
2085 char * arg[4];
2086 char * env[5];
2087 char * path = sh_util_strdup(_("/bin/sh"));
2088
2089 int status = -1;
2090
2091 arg[0] = sh_util_strdup(_("/bin/sh"));
2092 arg[1] = sh_util_strdup(_("-c"));
2093 arg[2] = sh_util_strdup(str);
2094 arg[3] = NULL;
2095
2096 env[0] = sh_util_strdup(_("PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/ucb"));
2097 env[1] = sh_util_strdup(_("SHELL=/bin/sh"));
2098 env[2] = sh_util_strdup(_("IFS= \t\n"));
2099 if (getenv("TZ")) { /* flawfinder: ignore */
2100 char * tz = sh_util_strdup(getenv("TZ")); /* flawfinder: ignore */
2101 size_t tzlen = strlen(tz);
2102 if (SL_TRUE == sl_ok_adds (4, tzlen)) {
2103 env[3] = SH_ALLOC(4+tzlen);
2104 sl_strlcpy(env[3], "TZ=", 4);
2105 sl_strlcat(env[3], tz , 4+tzlen);
2106 } else {
2107 env[3] = NULL;
2108 }
2109 } else {
2110 env[3] = NULL;
2111 }
2112 env[4] = NULL;
2113
2114 pid = fork();
2115
2116 if (pid == (pid_t)(-1))
2117 {
2118 return -1;
2119 }
2120
2121 else if (pid == 0) /* child */
2122 {
2123 memset(skey, 0, sizeof(sh_key_t));
2124 (void) umask(S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
2125 sh_unix_closeall (3, -1, SL_TRUE); /* in child process */
2126 execve(path, arg, env);
2127 _exit(EXIT_FAILURE);
2128 }
2129
2130 else /* parent */
2131 {
2132 int r;
2133
2134 while((r = waitpid(pid, &status, WUNTRACED)) != pid && r != -1) ;
2135
2136#if !defined(USE_UNO)
2137 if (r == -1 || !WIFEXITED(status))
2138 {
2139 status = -1;
2140 }
2141 else
2142 {
2143 status = WEXITSTATUS(status);
2144 }
2145#endif
2146 }
2147
2148 return status;
2149}
2150
2151/********************************************************
2152 *
2153 * TIME
2154 *
2155 ********************************************************/
2156
2157/* Figure out the time offset of the current timezone
2158 * in a portable way.
2159 */
2160char * t_zone(const time_t * xx)
2161{
2162 struct tm aa;
2163 struct tm bb;
2164 struct tm * cc;
2165 int sign = 0;
2166 int diff = 0;
2167 int hh, mm;
2168 static char tz[64];
2169
2170 SL_ENTER(_("t_zone"));
2171
2172#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2173 cc = gmtime_r (xx, &aa);
2174#else
2175 cc = gmtime (xx);
2176 memcpy (&aa, cc, sizeof(struct tm));
2177#endif
2178
2179#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2180 cc = localtime_r (xx, &bb);
2181#else
2182 cc = localtime (xx);
2183 memcpy (&bb, cc, sizeof(struct tm));
2184#endif
2185
2186 /* Check for datum wrap-around.
2187 */
2188 if (aa.tm_year < bb.tm_year)
2189 sign = (-1);
2190 else if (aa.tm_mon < bb.tm_mon)
2191 sign = (-1);
2192 else if (aa.tm_mday < bb.tm_mday)
2193 sign = (-1);
2194 else if (bb.tm_year < aa.tm_year)
2195 sign = ( 1);
2196 else if (bb.tm_mon < aa.tm_mon)
2197 sign = ( 1);
2198 else if (bb.tm_mday < aa.tm_mday)
2199 sign = ( 1);
2200
2201 diff = aa.tm_hour * 60 + aa.tm_min;
2202 diff = (bb.tm_hour * 60 + bb.tm_min) - diff;
2203 diff = diff - (sign * 24 * 60); /* datum wrap-around correction */
2204 hh = diff / 60;
2205 mm = diff - (hh * 60);
2206 sprintf (tz, _("%+03d%02d"), hh, mm); /* known to fit */
2207
2208 SL_RETURN(tz, _("t_zone"));
2209}
2210
2211unsigned long sh_unix_longtime ()
2212{
2213 return ((unsigned long)time(NULL));
2214}
2215
2216#ifdef HAVE_GETTIMEOFDAY
2217unsigned long sh_unix_notime ()
2218{
2219 struct timeval tv;
2220
2221 gettimeofday (&tv, NULL);
2222
2223 return ((unsigned long)(tv.tv_sec + tv.tv_usec * 10835 + getpid() + getppid()));
2224
2225}
2226#endif
2227
2228static int count_dev_time = 0;
2229
2230void reset_count_dev_time(void)
2231{
2232 count_dev_time = 0;
2233 return;
2234}
2235
2236int sh_unix_settimeserver (const char * address)
2237{
2238
2239 SL_ENTER(_("sh_unix_settimeserver"));
2240
2241 if (address != NULL && count_dev_time < 2
2242 && sl_strlen(address) < SH_PATHBUF)
2243 {
2244 if (count_dev_time == 0)
2245 sl_strlcpy (sh.srvtime.name, address, SH_PATHBUF);
2246 else
2247 sl_strlcpy (sh.srvtime.alt, address, SH_PATHBUF);
2248
2249 ++count_dev_time;
2250 SL_RETURN((0), _("sh_unix_settimeserver"));
2251 }
2252 SL_RETURN((-1), _("sh_unix_settimeserver"));
2253}
2254
2255
2256#ifdef HAVE_NTIME
2257#define UNIXEPOCH 2208988800UL /* difference between Unix time and net time
2258 * The UNIX EPOCH starts in 1970.
2259 */
2260#include <sys/socket.h>
2261#include <netinet/in.h>
2262#include <arpa/inet.h>
2263#include <netdb.h>
2264#include <ctype.h>
2265#endif
2266
2267/* Timeserver service. */
2268/* define is missing on HP-UX 10.20 */
2269#ifndef IPPORT_TIMESERVER
2270#define IPPORT_TIMESERVER 37
2271#endif
2272
2273char * sh_unix_time (time_t thetime, char * buffer, size_t len)
2274{
2275
2276 int status;
2277 char AsciiTime[81]; /* local time */
2278 time_t time_now;
2279 struct tm * time_ptr;
2280#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2281 struct tm time_tm;
2282#endif
2283#ifdef SH_USE_XML
2284 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2285#else
2286 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2287#endif
2288
2289#ifdef HAVE_NTIME
2290 int fd; /* network file descriptor */
2291 u_char net_time[4]; /* remote time in network format */
2292 static int failerr = 0; /* no net time */
2293 int fail = 0; /* no net time */
2294 int errflag;
2295 char errmsg[256];
2296 char error_call[SH_MINIBUF];
2297 int error_num;
2298#endif
2299
2300 SL_ENTER(_("sh_unix_time"));
2301
2302#ifdef HAVE_NTIME
2303 if (thetime == 0)
2304 {
2305 if (sh.srvtime.name[0] == '\0')
2306 {
2307 fail = 1;
2308 (void) time (&time_now);
2309 }
2310 else /* have a timeserver address */
2311 {
2312 fd = connect_port_2 (sh.srvtime.name, sh.srvtime.alt,
2313 IPPORT_TIMESERVER,
2314 error_call, &error_num, errmsg, sizeof(errmsg));
2315 if (fd >= 0)
2316 {
2317 if (4 != read_port (fd, (char *) net_time, 4, &errflag, 2))
2318 {
2319 fail = 1;
2320 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2321 MSG_E_NLOST,
2322 _("time"), sh.srvtime.name);
2323 }
2324 sl_close_fd(FIL__, __LINE__, fd);
2325 }
2326 else
2327 {
2328 sh_error_handle ((-1), FIL__, __LINE__, error_num,
2329 MSG_E_NET, errmsg, error_call,
2330 _("time"), sh.srvtime.name);
2331 fail = 1;
2332 }
2333
2334 if (fail == 0)
2335 {
2336 unsigned long ltmp;
2337 UINT32 ttmp;
2338 memcpy(&ttmp, net_time, sizeof(UINT32)); ltmp = ttmp;
2339 time_now = ntohl(ltmp) - UNIXEPOCH;
2340 /* fprintf(stderr, "TIME IS %ld\n", time_now); */
2341 if (failerr == 1) {
2342 failerr = 0;
2343 sh_error_handle ((-1), FIL__, __LINE__, 0,
2344 MSG_E_NEST,
2345 _("time"), sh.srvtime.name);
2346 }
2347 }
2348 else
2349 {
2350 (void) time (&time_now);
2351 if (failerr == 0)
2352 {
2353 failerr = 1;
2354 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2355 MSG_SRV_FAIL,
2356 _("time"), sh.srvtime.name);
2357 }
2358 }
2359 }
2360 }
2361 else
2362 {
2363 time_now = thetime;
2364 }
2365
2366 /* #ifdef HAVE_NTIME */
2367#else
2368
2369 if (thetime == 0)
2370 {
2371 (void) time (&time_now);
2372 }
2373 else
2374 {
2375 time_now = thetime;
2376 }
2377
2378 /* #ifdef HAVE_NTIME */
2379#endif
2380
2381 if (time_now == (-1) )
2382 {
2383 sl_strlcpy(buffer, _(deftime), len);
2384 SL_RETURN(buffer, _("sh_unix_time"));
2385 }
2386 else
2387 {
2388#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2389 time_ptr = localtime_r (&time_now, &time_tm);
2390#else
2391 time_ptr = localtime (&time_now);
2392#endif
2393 }
2394 if (time_ptr != NULL)
2395 {
2396 status = strftime (AsciiTime, sizeof(AsciiTime),
2397#ifdef SH_USE_XML
2398 _("%Y-%m-%dT%H:%M:%S%%s"),
2399#else
2400 _("[%Y-%m-%dT%H:%M:%S%%s]"),
2401#endif
2402 time_ptr);
2403
2404 sl_snprintf(buffer, len, AsciiTime, t_zone(&time_now));
2405
2406 if ( (status == 0) || (status == sizeof(AsciiTime)) )
2407 {
2408 sl_strlcpy(buffer, _(deftime), len);
2409 SL_RETURN( buffer, _("sh_unix_time"));
2410 }
2411 else
2412 {
2413 SL_RETURN(buffer, _("sh_unix_time"));
2414 }
2415 }
2416
2417 /* last resort
2418 */
2419 sl_strlcpy(buffer, _(deftime), len);
2420 SL_RETURN( buffer, _("sh_unix_time"));
2421}
2422
2423static int sh_unix_use_localtime = S_FALSE;
2424
2425/* whether to use localtime for file timesatams in logs
2426 */
2427int sh_unix_uselocaltime (const char * c)
2428{
2429 int i;
2430 SL_ENTER(_("sh_unix_uselocaltime"));
2431 i = sh_util_flagval(c, &(sh_unix_use_localtime));
2432
2433 SL_RETURN(i, _("sh_unix_uselocaltime"));
2434}
2435
2436char * sh_unix_gmttime (time_t thetime, char * buffer, size_t len)
2437{
2438
2439 int status;
2440
2441 struct tm * time_ptr;
2442#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS)
2443 struct tm time_tm;
2444#endif
2445 char AsciiTime[81]; /* GMT time */
2446#ifdef SH_USE_XML
2447 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2448#else
2449 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2450#endif
2451
2452 SL_ENTER(_("sh_unix_gmttime"));
2453
2454 if (sh_unix_use_localtime == S_FALSE)
2455 {
2456#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2457 time_ptr = gmtime_r (&thetime, &time_tm);
2458#else
2459 time_ptr = gmtime (&thetime);
2460#endif
2461 }
2462 else
2463 {
2464#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2465 time_ptr = localtime_r (&thetime, &time_tm);
2466#else
2467 time_ptr = localtime (&thetime);
2468#endif
2469 }
2470 if (time_ptr != NULL)
2471 {
2472 status = strftime (AsciiTime, 80,
2473#ifdef SH_USE_XML
2474 _("%Y-%m-%dT%H:%M:%S"),
2475#else
2476 _("[%Y-%m-%dT%H:%M:%S]"),
2477#endif
2478 time_ptr);
2479
2480 if ( (status == 0) || (status == 80) )
2481 sl_strlcpy(buffer, _(deftime), len);
2482 else
2483 sl_strlcpy(buffer, AsciiTime, len);
2484 SL_RETURN( buffer, _("sh_unix_gmttime"));
2485 }
2486
2487 /* last resort
2488 */
2489 sl_strlcpy(buffer, _(deftime), len);
2490 SL_RETURN( buffer, _("sh_unix_gmttime"));
2491}
2492
2493
2494char * sh_unix_getUIDdir (int level, uid_t uid, char * out, size_t len)
2495{
2496 struct passwd * tempres;
2497 int status = 0;
2498
2499#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2500 struct passwd pwd;
2501 char * buffer;
2502#endif
2503 char errbuf[SH_ERRBUF_SIZE];
2504
2505 SL_ENTER(_("sh_unix_getUIDdir"));
2506
2507#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2508 buffer = SH_ALLOC(SH_PWBUF_SIZE);
2509 sh_getpwuid_r(uid, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
2510#else
2511 errno = 0;
2512 tempres = sh_getpwuid(uid);
2513 status = errno;
2514#endif
2515
2516 if (tempres == NULL) {
2517 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2518 sh_error_message(status, errbuf, sizeof(errbuf)),
2519 _("getpwuid"), (long) uid, _("completely missing"));
2520#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2521 SH_FREE(buffer);
2522#endif
2523 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2524 }
2525
2526 if (tempres->pw_dir != NULL) {
2527 sl_strlcpy(out, tempres->pw_dir, len);
2528#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2529 SH_FREE(buffer);
2530#endif
2531 SL_RETURN( out, _("sh_unix_getUIDdir"));
2532 } else {
2533 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2534 sh_error_message(status, errbuf, sizeof(errbuf)),
2535 _("getpwuid"), (long) uid, _("pw_dir"));
2536#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2537 SH_FREE(buffer);
2538#endif
2539 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2540 }
2541}
2542
2543/* ------------------- Caching ----------------*/
2544#include "zAVLTree.h"
2545
2546#define CACHE_GID 0
2547#define CACHE_UID 1
2548
2549struct user_id {
2550 char * name;
2551 uid_t id;
2552 struct user_id * next;
2553};
2554
2555static struct user_id * uid_list = NULL;
2556static struct user_id * gid_list = NULL;
2557
2558SH_MUTEX_STATIC(mutex_cache, PTHREAD_MUTEX_INITIALIZER);
2559
2560static void sh_userid_free(struct user_id * item)
2561{
2562 while (item)
2563 {
2564 struct user_id * user = item;
2565 item = item->next;
2566
2567 SH_FREE(user->name);
2568 SH_FREE(user);
2569 }
2570 return;
2571}
2572
2573void sh_userid_destroy ()
2574{
2575 struct user_id * tmp_uid;
2576 struct user_id * tmp_gid;
2577
2578 SH_MUTEX_LOCK_UNSAFE(mutex_cache);
2579 tmp_gid = gid_list;
2580 gid_list = NULL;
2581 tmp_uid = uid_list;
2582 uid_list = NULL;
2583 SH_MUTEX_UNLOCK_UNSAFE(mutex_cache);
2584
2585 sh_userid_free(tmp_uid);
2586 sh_userid_free(tmp_gid);
2587 return;
2588}
2589
2590static void sh_userid_additem(struct user_id * list, struct user_id * item)
2591{
2592 while (list && list->next)
2593 list = list->next;
2594 list->next = item;
2595 return;
2596}
2597
2598static void sh_userid_add(uid_t id, char * username, int which)
2599{
2600 size_t len;
2601 struct user_id * user = SH_ALLOC(sizeof(struct user_id));
2602
2603 if (username)
2604 len = strlen(username) + 1;
2605 else
2606 len = 1;
2607
2608 user->name = SH_ALLOC(len);
2609 user->id = id;
2610 if (username)
2611 sl_strlcpy(user->name, username, len);
2612 else
2613 user->name[0] = '\0';
2614 user->next = NULL;
2615
2616 SH_MUTEX_LOCK(mutex_cache);
2617 if (which == CACHE_UID)
2618 {
2619 if (!uid_list)
2620 uid_list = user;
2621 else
2622 sh_userid_additem(uid_list, user);
2623 }
2624 else
2625 {
2626 if (!gid_list)
2627 gid_list = user;
2628 else
2629 sh_userid_additem(gid_list, user);
2630 }
2631 SH_MUTEX_UNLOCK(mutex_cache);
2632
2633 return;
2634}
2635
2636static char * sh_userid_search(struct user_id * list, uid_t id)
2637{
2638 while (list)
2639 {
2640 if (list->id == id)
2641 return list->name;
2642 list = list->next;
2643 }
2644 return NULL;
2645}
2646
2647static char * sh_userid_get (uid_t id, int which, char * out, size_t len)
2648{
2649 char * user = NULL;
2650
2651 SH_MUTEX_LOCK_UNSAFE(mutex_cache);
2652 if (which == CACHE_UID)
2653 user = sh_userid_search(uid_list, id);
2654 else
2655 user = sh_userid_search(gid_list, id);
2656 if (user)
2657 {
2658 sl_strlcpy(out, user, len);
2659 user = out;
2660 }
2661 SH_MUTEX_UNLOCK_UNSAFE(mutex_cache);
2662
2663 return user;
2664}
2665
2666/* --------- end caching code --------- */
2667
2668char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len)
2669{
2670 struct passwd * tempres;
2671#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2672 struct passwd pwd;
2673 char * buffer;
2674#endif
2675 int status = 0;
2676 char errbuf[SH_ERRBUF_SIZE];
2677 char * tmp;
2678
2679 SL_ENTER(_("sh_unix_getUIDname"));
2680
2681 tmp = sh_userid_get(uid, CACHE_UID, out, len);
2682
2683 if (tmp)
2684 {
2685 if (tmp[0] != '\0')
2686 {
2687 SL_RETURN( out, _("sh_unix_getUIDname"));
2688 }
2689 else
2690 {
2691 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2692 }
2693 }
2694
2695#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2696 buffer = SH_ALLOC(SH_PWBUF_SIZE);
2697 sh_getpwuid_r(uid, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
2698#else
2699 errno = 0;
2700 tempres = sh_getpwuid(uid);
2701 status = errno;
2702#endif
2703
2704 if (tempres == NULL)
2705 {
2706 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2707 sh_error_message(status, errbuf, sizeof(errbuf)),
2708 _("getpwuid"), (long) uid, _("completely missing"));
2709#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2710 SH_FREE(buffer);
2711#endif
2712 sh_userid_add(uid, NULL, CACHE_UID);
2713 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2714 }
2715
2716
2717 if (tempres->pw_name != NULL)
2718 {
2719
2720 sl_strlcpy(out, tempres->pw_name, len);
2721 sh_userid_add(uid, out, CACHE_UID);
2722
2723#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2724 SH_FREE(buffer);
2725#endif
2726
2727 SL_RETURN( out, _("sh_unix_getUIDname"));
2728 }
2729 else
2730 {
2731 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2732 sh_error_message(status, errbuf, sizeof(errbuf)),
2733 _("getpwuid"), (long) uid, _("pw_user"));
2734#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2735 SH_FREE(buffer);
2736#endif
2737 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2738 }
2739 /* notreached */
2740}
2741
2742char * sh_unix_getGIDname (int level, gid_t gid, char * out, size_t len)
2743{
2744 struct group * tempres;
2745 int status = 0;
2746
2747#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2748 struct group grp;
2749 char * buffer;
2750#endif
2751 char errbuf[SH_ERRBUF_SIZE];
2752 char * tmp;
2753
2754 SL_ENTER(_("sh_unix_getGIDname"));
2755
2756 tmp = sh_userid_get((uid_t)gid, CACHE_GID, out, len);
2757
2758 if (tmp)
2759 {
2760 if (tmp[0] != '\0')
2761 {
2762 SL_RETURN( out, _("sh_unix_getGIDname"));
2763 }
2764 else
2765 {
2766 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2767 }
2768 }
2769
2770#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2771 buffer = SH_ALLOC(SH_GRBUF_SIZE);
2772 status = sh_getgrgid_r(gid, &grp, buffer, SH_GRBUF_SIZE, &tempres);
2773#else
2774 errno = 0;
2775 tempres = sh_getgrgid(gid);
2776 status = errno;
2777#endif
2778
2779 if (tempres == NULL)
2780 {
2781 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
2782 sh_error_message(status, errbuf, sizeof(errbuf)),
2783 _("getgrgid"), (long) gid, _("completely missing"));
2784
2785#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2786 SH_FREE(buffer);
2787#endif
2788
2789 sh_userid_add(gid, NULL, CACHE_GID);
2790 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2791 }
2792
2793 if (tempres->gr_name != NULL)
2794 {
2795
2796 sl_strlcpy(out, tempres->gr_name, len);
2797 sh_userid_add((uid_t)gid, out, CACHE_GID);
2798
2799#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2800 SH_FREE(buffer);
2801#endif
2802
2803 SL_RETURN( out, _("sh_unix_getGIDname"));
2804 }
2805 else
2806 {
2807 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
2808 sh_error_message(status, errbuf, sizeof(errbuf)),
2809 _("getgrgid"), (long) gid, _("gr_name"));
2810
2811#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2812 SH_FREE(buffer);
2813#endif
2814
2815 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2816 }
2817 /* notreached */
2818}
2819
2820int sh_unix_getUser ()
2821{
2822 char * p;
2823 uid_t seuid, sruid;
2824 char user[USER_MAX];
2825 char dir[SH_PATHBUF];
2826
2827 SL_ENTER(_("sh_unix_getUser"));
2828
2829 seuid = geteuid();
2830
2831 sh.effective.uid = seuid;
2832
2833 p = sh_unix_getUIDdir (SH_ERR_ERR, seuid, dir, sizeof(dir));
2834
2835 if (p == NULL)
2836 SL_RETURN((-1), _("sh_unix_getUser"));
2837 else
2838 {
2839 if (sl_strlen(p) >= SH_PATHBUF) {
2840 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2841 _("getpwuid"), (long) seuid, _("pw_home"));
2842 SL_RETURN((-1), _("sh_unix_getUser"));
2843 } else {
2844 sl_strlcpy ( sh.effective.home, p, SH_PATHBUF);
2845 }
2846 }
2847
2848 sruid = getuid();
2849
2850 sh.real.uid = sruid;
2851
2852 p = sh_unix_getUIDname (SH_ERR_ERR, sruid, user, sizeof(user));
2853 if (p == NULL)
2854 SL_RETURN((-1), _("sh_unix_getUser"));
2855 else
2856 {
2857 if (sl_strlen(p) >= USER_MAX) {
2858 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2859 _("getpwuid"), (long) sruid, _("pw_user"));
2860 SL_RETURN((-1), _("sh_unix_getUser"));
2861 } else {
2862 sl_strlcpy ( sh.real.user, p, USER_MAX);
2863 }
2864 }
2865
2866 p = sh_unix_getUIDdir (SH_ERR_ERR, sruid, dir, sizeof(dir));
2867
2868 if (p == NULL)
2869 SL_RETURN((-1), _("sh_unix_getUser"));
2870 else
2871 {
2872 if (sl_strlen(p) >= SH_PATHBUF) {
2873 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2874 _("getpwuid"), (long) sruid, _("pw_home"));
2875 SL_RETURN((-1), _("sh_unix_getUser"));
2876 } else {
2877 sl_strlcpy ( sh.real.home, p, SH_PATHBUF);
2878 }
2879 }
2880
2881 SL_RETURN((0), _("sh_unix_getUser"));
2882
2883 /* notreached */
2884}
2885
2886
2887int sh_unix_getline (SL_TICKET fd, char * line, int sizeofline)
2888{
2889 register int count;
2890 register int n = 0;
2891 char c;
2892
2893 SL_ENTER(_("sh_unix_getline"));
2894
2895 if (sizeofline < 2) {
2896 line[0] = '\0';
2897 SL_RETURN((0), _("sh_unix_getline"));
2898 }
2899
2900 --sizeofline;
2901
2902 while (n < sizeofline) {
2903
2904 count = sl_read (fd, &c, 1);
2905
2906 /* end of file
2907 */
2908 if (count < 1) {
2909 line[n] = '\0';
2910 n = -1;
2911 break;
2912 }
2913
2914 if (/* c != '\0' && */ c != '\n') {
2915 line[n] = c;
2916 ++n;
2917 } else if (c == '\n') {
2918 if (n > 0) {
2919 line[n] = '\0';
2920 break;
2921 } else {
2922 line[n] = '\n'; /* get newline only if only char on line */
2923 ++n;
2924 line[n] = '\0';
2925 break;
2926 }
2927 } else {
2928 line[n] = '\0';
2929 break;
2930 }
2931
2932 }
2933
2934
2935 line[sizeofline] = '\0'; /* make sure line is terminated */
2936 SL_RETURN((n), _("sh_unix_getline"));
2937}
2938
2939
2940#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
2941
2942/**************************************************************
2943 *
2944 * --- FILE INFO ---
2945 *
2946 **************************************************************/
2947
2948#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
2949
2950#if defined(__linux__)
2951
2952/* --- Determine ext2fs file attributes. ---
2953 */
2954#include <sys/ioctl.h>
2955#if defined(HAVE_EXT2FS_EXT2_FS_H)
2956#include <ext2fs/ext2_fs.h>
2957#else
2958#include <linux/ext2_fs.h>
2959#endif
2960
2961/* __linux__ includes */
2962#endif
2963
2964static
2965int sh_unix_getinfo_attr (char * name,
2966 unsigned long * flags,
2967 char * c_attr,
2968 int fd, struct stat * buf)
2969{
2970
2971/* TAKEN FROM:
2972 *
2973 * lsattr.c - List file attributes on an ext2 file system
2974 *
2975 * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
2976 * Laboratoire MASI, Institut Blaise Pascal
2977 * Universite Pierre et Marie Curie (Paris VI)
2978 *
2979 * This file can be redistributed under the terms of the GNU General
2980 * Public License
2981 */
2982
2983#ifdef HAVE_STAT_FLAGS
2984
2985 SL_ENTER(_("sh_unix_getinfo_attr"));
2986
2987 *flags = 0;
2988
2989 /* cast to void to avoid compiler warning about unused parameters */
2990 (void) fd;
2991 (void) name;
2992
2993#ifdef UF_NODUMP
2994 if (buf->st_flags & UF_NODUMP) {
2995 *flags |= UF_NODUMP;
2996 c_attr[0] = 'd';
2997 }
2998#endif
2999#ifdef UF_IMMUTABLE
3000 if (buf->st_flags & UF_IMMUTABLE) {
3001 *flags |= UF_IMMUTABLE;
3002 c_attr[1] = 'i';
3003 }
3004#endif
3005#ifdef UF_APPEND
3006 if (buf->st_flags & UF_APPEND) {
3007 *flags |= UF_APPEND;
3008 c_attr[2] = 'a';
3009 }
3010#endif
3011#ifdef UF_NOUNLINK
3012 if (buf->st_flags & UF_NOUNLINK) {
3013 *flags |= UF_NOUNLINK;
3014 c_attr[3] = 'u';
3015 }
3016#endif
3017#ifdef UF_OPAQUE
3018 if (buf->st_flags & UF_OPAQUE) {
3019 *flags |= UF_OPAQUE;
3020 c_attr[4] = 'o';
3021 }
3022#endif
3023#ifdef SF_ARCHIVED
3024 if (buf->st_flags & SF_ARCHIVED) {
3025 *flags |= SF_ARCHIVED;
3026 c_attr[5] = 'R';
3027 }
3028
3029#endif
3030#ifdef SF_IMMUTABLE
3031 if (buf->st_flags & SF_IMMUTABLE) {
3032 *flags |= SF_IMMUTABLE;
3033 c_attr[6] = 'I';
3034 }
3035#endif
3036#ifdef SF_APPEND
3037 if (buf->st_flags & SF_APPEND) {
3038 *flags |= SF_APPEND;
3039 c_attr[7] = 'A';
3040 }
3041#endif
3042#ifdef SF_NOUNLINK
3043 if (buf->st_flags & SF_NOUNLINK) {
3044 *flags |= SF_NOUNLINK;
3045 c_attr[8] = 'U';
3046 }
3047#endif
3048
3049 /* ! HAVE_STAT_FLAGS */
3050#else
3051
3052#ifdef HAVE_EXT2_IOCTLS
3053 int /* fd, */ r, f;
3054
3055 SL_ENTER(_("sh_unix_getinfo_attr"));
3056
3057 *flags = 0;
3058 (void) buf;
3059
3060 /* open() -> aud_open() R.Wichmann
3061 fd = aud_open (FIL__, __LINE__, SL_YESPRIV, name, O_RDONLY|O_NONBLOCK, 0);
3062 */
3063
3064 if (fd == -1 || name == NULL)
3065 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
3066
3067
3068 r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
3069 /* sl_close_fd (FIL__, __LINE__, fd); */
3070
3071 if (r == -1)
3072 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
3073
3074 if (f == 0)
3075 SL_RETURN(0, _("sh_unix_getinfo_attr"));
3076
3077 *flags = f;
3078
3079/* ! HAVE_EXT2_IOCTLS */
3080#else
3081
3082 SL_ENTER(_("sh_unix_getinfo_attr"));
3083
3084 *flags = 0; /* modified by R.Wichmann */
3085
3086/* ! HAVE_EXT2_IOCTLS */
3087#endif
3088/*
3089 * END
3090 *
3091 * lsattr.c - List file attributes on an ext2 file system
3092 */
3093
3094 if (*flags == 0)
3095 goto theend;
3096
3097#ifdef EXT2_SECRM_FL
3098 if ( (*flags & EXT2_SECRM_FL) != 0 ) c_attr[0] = 's';
3099#endif
3100#ifdef EXT2_UNRM_FL
3101 if ( (*flags & EXT2_UNRM_FL) != 0 ) c_attr[1] = 'u';
3102#endif
3103#ifdef EXT2_SYNC_FL
3104 if ( (*flags & EXT2_SYNC_FL) != 0 ) c_attr[2] = 'S';
3105#endif
3106#ifdef EXT2_IMMUTABLE_FL
3107 if ( (*flags & EXT2_IMMUTABLE_FL) != 0) c_attr[3] = 'i';
3108#endif
3109#ifdef EXT2_APPEND_FL
3110 if ( (*flags & EXT2_APPEND_FL) != 0 ) c_attr[4] = 'a';
3111#endif
3112#ifdef EXT2_NODUMP_FL
3113 if ( (*flags & EXT2_NODUMP_FL) != 0 ) c_attr[5] = 'd';
3114#endif
3115#ifdef EXT2_NOATIME_FL
3116 if ( (*flags & EXT2_NOATIME_FL) != 0) c_attr[6] = 'A';
3117#endif
3118#ifdef EXT2_COMPR_FL
3119 if ( (*flags & EXT2_COMPR_FL) != 0 ) c_attr[7] = 'c';
3120#endif
3121
3122#ifdef EXT2_TOPDIR_FL
3123 if ( (*flags & EXT2_TOPDIR_FL) != 0 ) c_attr[8] = 'T';
3124#endif
3125#ifdef EXT2_DIRSYNC_FL
3126 if ( (*flags & EXT2_DIRSYNC_FL) != 0 ) c_attr[9] = 'D';
3127#endif
3128#ifdef EXT2_NOTAIL_FL
3129 if ( (*flags & EXT2_NOTAIL_FL) != 0 ) c_attr[10] = 't';
3130#endif
3131#ifdef EXT2_JOURNAL_DATA_FL
3132 if ( (*flags & EXT2_JOURNAL_DATA_FL) != 0) c_attr[11] = 'j';
3133#endif
3134
3135 theend:
3136 /* ext2 */
3137#endif
3138
3139 c_attr[12] = '\0';
3140
3141 SL_RETURN(0, _("sh_unix_getinfo_attr"));
3142}
3143
3144/* defined(__linux__) || defined(HAVE_STAT_FLAGS) */
3145#endif
3146
3147/* determine file type
3148 */
3149static
3150int sh_unix_getinfo_type (struct stat * buf,
3151 ShFileType * type,
3152 char * c_mode)
3153{
3154 SL_ENTER(_("sh_unix_getinfo_type"));
3155
3156 if ( S_ISREG(buf->st_mode) ) {
3157 (*type) = SH_FILE_REGULAR;
3158 c_mode[0] = '-';
3159 }
3160 else if ( S_ISLNK(buf->st_mode) ) {
3161 (*type) = SH_FILE_SYMLINK;
3162 c_mode[0] = 'l';
3163 }
3164 else if ( S_ISDIR(buf->st_mode) ) {
3165 (*type) = SH_FILE_DIRECTORY;
3166 c_mode[0] = 'd';
3167 }
3168 else if ( S_ISCHR(buf->st_mode) ) {
3169 (*type) = SH_FILE_CDEV;
3170 c_mode[0] = 'c';
3171 }
3172 else if ( S_ISBLK(buf->st_mode) ) {
3173 (*type) = SH_FILE_BDEV;
3174 c_mode[0] = 'b';
3175 }
3176 else if ( S_ISFIFO(buf->st_mode) ) {
3177 (*type) = SH_FILE_FIFO;
3178 c_mode[0] = '|';
3179 }
3180 else if ( S_ISSOCK(buf->st_mode) ) {
3181 (*type) = SH_FILE_SOCKET;
3182 c_mode[0] = 's';
3183 }
3184 else if ( S_ISDOOR(buf->st_mode) ) {
3185 (*type) = SH_FILE_DOOR;
3186 c_mode[0] = 'D';
3187 }
3188 else if ( S_ISPORT(buf->st_mode) ) {
3189 (*type) = SH_FILE_PORT;
3190 c_mode[0] = 'P';
3191 }
3192 else {
3193 (*type) = SH_FILE_UNKNOWN;
3194 c_mode[0] = '?';
3195 }
3196
3197 SL_RETURN(0, _("sh_unix_getinfo_type"));
3198}
3199
3200int sh_unix_get_ftype(char * fullpath)
3201{
3202 char c_mode[CMODE_SIZE];
3203 struct stat buf;
3204 ShFileType type;
3205 int res;
3206
3207 SL_ENTER(_("sh_unix_get_ftype"));
3208
3209 res = retry_lstat(FIL__, __LINE__, fullpath, &buf);
3210
3211 if (res < 0)
3212 SL_RETURN(SH_FILE_UNKNOWN, _("sh_unix_getinfo_type"));
3213
3214 sh_unix_getinfo_type (&buf, &type, c_mode);
3215
3216 SL_RETURN(type, _("sh_unix_get_ftype"));
3217}
3218
3219
3220static
3221int sh_unix_getinfo_mode (struct stat *buf,
3222 unsigned int * mode,
3223 char * c_mode)
3224{
3225
3226 SL_ENTER(_("sh_unix_getinfo_mode"));
3227
3228 (*mode) = buf->st_mode;
3229
3230 /* make 'ls'-like string */
3231
3232 if ( (buf->st_mode & S_IRUSR) != 0 ) c_mode[1] = 'r';
3233 if ( (buf->st_mode & S_IWUSR) != 0 ) c_mode[2] = 'w';
3234 if ( (buf->st_mode & S_IXUSR) != 0 ) {
3235 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 's';
3236 else c_mode[3] = 'x';
3237 } else {
3238 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 'S';
3239 }
3240
3241 if ( (buf->st_mode & S_IRGRP) != 0 ) c_mode[4] = 'r';
3242 if ( (buf->st_mode & S_IWGRP) != 0 ) c_mode[5] = 'w';
3243 if ( (buf->st_mode & S_IXGRP) != 0 ) {
3244 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 's';
3245 else c_mode[6] = 'x';
3246 } else {
3247 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 'S';
3248 }
3249
3250 if ( (buf->st_mode & S_IROTH) != 0 ) c_mode[7] = 'r';
3251 if ( (buf->st_mode & S_IWOTH) != 0 ) c_mode[8] = 'w';
3252#ifdef S_ISVTX /* not POSIX */
3253 if ( (buf->st_mode & S_IXOTH) != 0 ) {
3254 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 't';
3255 else c_mode[9] = 'x';
3256 } else {
3257 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 'T';
3258 }
3259#else
3260 if ( (buf->st_mode & S_IXOTH) != 0 ) c_mode[9] = 'x';
3261#endif
3262
3263 SL_RETURN(0, _("sh_unix_getinfo_mode"));
3264}
3265
3266
3267long IO_Limit = 0;
3268
3269void sh_unix_io_pause ()
3270{
3271 long runtime;
3272 float someval;
3273 unsigned long sometime;
3274
3275 if (IO_Limit == 0)
3276 {
3277 return;
3278 }
3279 else
3280 {
3281 runtime = (long) (time(NULL) - sh.statistics.time_start);
3282
3283 if (runtime > 0 && (long)(sh.statistics.bytes_hashed/runtime) > IO_Limit)
3284 {
3285 someval = sh.statistics.bytes_hashed - (IO_Limit * runtime);
3286 someval /= (float) IO_Limit;
3287 if (someval < 1.0)
3288 {
3289 someval *= 1000; /* milliseconds in a second */
3290 sometime = (unsigned long) someval;
3291 retry_msleep(0, sometime);
3292 }
3293 else
3294 {
3295 sometime = (unsigned long) someval;
3296 retry_msleep (sometime, 0);
3297 }
3298 }
3299 }
3300 return;
3301}
3302
3303int sh_unix_set_io_limit (const char * c)
3304{
3305 long val;
3306
3307 SL_ENTER(_("sh_unix_set_io_limit"));
3308
3309 val = strtol (c, (char **)NULL, 10);
3310 if (val < 0)
3311 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
3312 _("set I/O limit"), c);
3313
3314 val = (val < 0 ? 0 : val);
3315
3316 IO_Limit = val * 1024;
3317 SL_RETURN( 0, _("sh_unix_set_io_limit"));
3318}
3319
3320/* obtain file info
3321 */
3322extern int flag_err_debug;
3323
3324#include "sh_ignore.h"
3325
3326int sh_unix_checksum_size (char * filename, struct stat * fbuf,
3327 char * fileHash, int alert_timeout, SL_TICKET fd)
3328{
3329 file_type * tmpFile;
3330 int status;
3331
3332 SL_ENTER(_("sh_unix_checksum_size"));
3333
3334 tmpFile = SH_ALLOC(sizeof(file_type));
3335 tmpFile->link_path = NULL;
3336
3337 if (sh.flag.checkSum != SH_CHECK_INIT)
3338 {
3339 /* lookup file in database */
3340 status = sh_hash_get_it (filename, tmpFile, NULL);
3341 if (status != 0) {
3342 goto out;
3343 }
3344 }
3345 else
3346 {
3347 tmpFile->size = fbuf->st_size;
3348 }
3349
3350 /* if last < current get checksum */
3351 if (tmpFile->size < fbuf->st_size)
3352 {
3353 char hashbuf[KEYBUF_SIZE];
3354 UINT64 local_length = (UINT64) (tmpFile->size < 0 ? 0 : tmpFile->size);
3355 sl_strlcpy(fileHash,
3356 sh_tiger_generic_hash (filename, fd, &(local_length),
3357 alert_timeout, hashbuf, sizeof(hashbuf)),
3358 KEY_LEN+1);
3359
3360 /* return */
3361 if (tmpFile->link_path) SH_FREE(tmpFile->link_path);
3362 SH_FREE(tmpFile);
3363 SL_RETURN( 0, _("sh_unix_checksum_size"));
3364 }
3365
3366 out:
3367 if (tmpFile->link_path) SH_FREE(tmpFile->link_path);
3368 SH_FREE(tmpFile);
3369 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3370 SL_RETURN( -1, _("sh_unix_checksum_size"));
3371}
3372
3373int sh_unix_check_selinux = S_FALSE;
3374int sh_unix_check_acl = S_FALSE;
3375
3376#ifdef USE_ACL
3377
3378#include <sys/acl.h>
3379static char * sh_unix_getinfo_acl (char * path, int fd, struct stat * buf)
3380{
3381 /* system.posix_acl_access, system.posix_acl_default
3382 */
3383 char * out = NULL;
3384 char * collect = NULL;
3385 char * tmp;
3386 char * out_compact;
3387 ssize_t len;
3388 acl_t result;
3389
3390 SL_ENTER(_("sh_unix_getinfo_acl"));
3391
3392 result = (fd == -1) ?
3393 acl_get_file (path, ACL_TYPE_ACCESS) :
3394 acl_get_fd (fd);
3395
3396 if (result)
3397 {
3398 out = acl_to_text (result, &len);
3399 if (out && (len > 0)) {
3400 out_compact = sh_util_acl_compact (out, len);
3401 acl_free(out);
3402 if (out_compact)
3403 {
3404 collect = sh_util_strconcat (_("acl_access:"), out_compact, NULL);
3405 SH_FREE(out_compact);
3406 }
3407 }
3408 acl_free(result);
3409 }
3410
3411
3412 if ( S_ISDIR(buf->st_mode) )
3413 {
3414 result = acl_get_file (path, ACL_TYPE_DEFAULT);
3415
3416 if (result)
3417 {
3418 out = acl_to_text (result, &len);
3419 if (out && (len > 0)) {
3420 out_compact = sh_util_acl_compact (out, len);
3421 acl_free(out);
3422 if (out_compact) {
3423 if (collect) {
3424 tmp = sh_util_strconcat (_("acl_default:"),
3425 out_compact, ":", collect, NULL);
3426 SH_FREE(collect);
3427 }
3428 else {
3429 tmp = sh_util_strconcat (_("acl_default:"), out_compact, NULL);
3430 }
3431 SH_FREE(out_compact);
3432 collect = tmp;
3433 }
3434 }
3435 acl_free(result);
3436 }
3437 }
3438
3439 SL_RETURN((collect),_("sh_unix_getinfo_acl"));
3440}
3441#endif
3442
3443#ifdef USE_XATTR
3444
3445#include <attr/xattr.h>
3446static char * sh_unix_getinfo_xattr_int (char * path, int fd, char * name)
3447{
3448 char * out = NULL;
3449 char * tmp = NULL;
3450 size_t size = 256;
3451 ssize_t result;
3452
3453 SL_ENTER(_("sh_unix_getinfo_xattr_int"));
3454
3455 out = SH_ALLOC(size);
3456
3457 result = (fd == -1) ?
3458 lgetxattr (path, name, out, size-1) :
3459 fgetxattr (fd, name, out, size-1);
3460
3461 if (result == -1 && errno == ERANGE)
3462 {
3463 SH_FREE(out);
3464 result = (fd == -1) ?
3465 lgetxattr (path, name, NULL, 0) :
3466 fgetxattr (fd, name, NULL, 0);
3467 size = result + 1;
3468 out = SH_ALLOC(size);
3469 result = (fd == -1) ?
3470 lgetxattr (path, name, out, size-1) :
3471 fgetxattr (fd, name, out, size-1);
3472 }
3473
3474 if ((result > 0) && ((size_t)result < size))
3475 {
3476 out[size-1] = '\0';
3477 tmp = out;
3478 }
3479 else
3480 {
3481 SH_FREE(out);
3482 }
3483
3484 SL_RETURN((tmp),_("sh_unix_getinfo_xattr_int"));
3485}
3486
3487
3488static char * sh_unix_getinfo_xattr (char * path, int fd, struct stat * buf)
3489{
3490 /* system.posix_acl_access, system.posix_acl_default, security.selinux
3491 */
3492 char * tmp;
3493 char * out = NULL;
3494 char * collect = NULL;
3495
3496 SL_ENTER(_("sh_unix_getinfo_xattr"));
3497
3498#ifdef USE_ACL
3499 /*
3500 * we need the acl_get_fd/acl_get_file functions, getxattr will only
3501 * yield the raw bytes
3502 */
3503 if (sh_unix_check_acl == S_TRUE)
3504 {
3505 out = sh_unix_getinfo_acl(path, fd, buf);
3506
3507 if (out)
3508 {
3509 collect = out;
3510 }
3511 }
3512#else
3513 (void) buf;
3514#endif
3515
3516 if (sh_unix_check_selinux == S_TRUE)
3517 {
3518 out = sh_unix_getinfo_xattr_int(path, fd, _("security.selinux"));
3519
3520 if (out)
3521 {
3522 if (collect) {
3523 tmp = sh_util_strconcat(_("selinux:"), out, ":", collect, NULL);
3524 SH_FREE(collect);
3525 }
3526 else {
3527 tmp = sh_util_strconcat(_("selinux:"), out, NULL);
3528 }
3529 SH_FREE(out);
3530 collect = tmp;
3531 }
3532 }
3533
3534 SL_RETURN((collect),_("sh_unix_getinfo_xattr"));
3535}
3536#endif
3537
3538#ifdef USE_XATTR
3539int sh_unix_setcheckselinux (const char * c)
3540{
3541 int i;
3542 SL_ENTER(_("sh_unix_setcheckselinux"));
3543 i = sh_util_flagval(c, &(sh_unix_check_selinux));
3544
3545 SL_RETURN(i, _("sh_unix_setcheckselinux"));
3546}
3547#endif
3548
3549#ifdef USE_ACL
3550int sh_unix_setcheckacl (const char * c)
3551{
3552 int i;
3553 SL_ENTER(_("sh_unix_setcheckacl"));
3554 i = sh_util_flagval(c, &(sh_unix_check_acl));
3555
3556 SL_RETURN(i, _("sh_unix_setcheckacl"));
3557}
3558#endif
3559
3560#ifdef HAVE_LIBZ
3561#include <zlib.h>
3562#endif
3563
3564int sh_unix_getinfo (int level, char * filename, file_type * theFile,
3565 char * fileHash, int policy)
3566{
3567 char timestr[81];
3568 long runtim;
3569 struct stat buf;
3570 struct stat lbuf;
3571 struct stat fbuf;
3572 int stat_return;
3573 int stat_errno = 0;
3574
3575 ShFileType type;
3576 unsigned int mode;
3577 char * tmp;
3578 char * tmp2;
3579
3580 char * linknamebuf;
3581 int linksize;
3582
3583 extern int get_the_fd (SL_TICKET ticket);
3584
3585 SL_TICKET rval_open;
3586 int err_open = 0;
3587
3588 int fd;
3589 int fstat_return;
3590 int fstat_errno = 0;
3591 int try = 0;
3592
3593 sh_string * content = NULL;
3594
3595 time_t tend;
3596 time_t tstart;
3597
3598
3599 char * path = NULL;
3600
3601 int alert_timeout = 120;
3602
3603 path = theFile->fullpath;
3604
3605 SL_ENTER(_("sh_unix_getinfo"));
3606
3607 /* --- Stat the file, and get checksum. ---
3608 */
3609 tstart = time(NULL);
3610
3611 stat_return = retry_lstat (FIL__, __LINE__,
3612 path /* theFile->fullpath */, &buf);
3613
3614 if (stat_return)
3615 stat_errno = errno;
3616
3617 theFile->link_path = NULL;
3618
3619 try_again:
3620
3621 fd = -1;
3622 fstat_return = -1;
3623 rval_open = -1;
3624
3625 if (stat_return == 0 && S_ISREG(buf.st_mode))
3626 {
3627 rval_open = sl_open_fastread (FIL__, __LINE__,
3628 path /* theFile->fullpath */, SL_YESPRIV);
3629 if (SL_ISERROR(rval_open))
3630 {
3631 char * stale = sl_check_stale();
3632
3633 if (stale)
3634 {
3635 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, err_open, MSG_E_SUBGEN,
3636 stale, _("sh_unix_getinfo_open"));
3637 }
3638
3639 if (errno == EBADF && try == 0) /* obsolete, but we keep this, just in case */
3640 {
3641 ++try;
3642 goto try_again;
3643 }
3644 err_open = errno;
3645 }
3646
3647 alert_timeout = 120; /* this is per 8K block now ! */
3648
3649 if (path[1] == 'p' && path[5] == '/' && path[2] == 'r' &&
3650 path[3] == 'o' && path[4] == 'c' && path[0] == '/')
3651 {
3652 /* seven is magic */
3653 alert_timeout = 7;
3654 }
3655
3656 fd = get_the_fd(rval_open);
3657 }
3658
3659 tend = time(NULL);
3660
3661 /* An unprivileged user may slow lstat/open to a crawl
3662 * with clever path/symlink setup
3663 */
3664 if ((tend - tstart) > (time_t) /* 60 */ 6)
3665 {
3666 tmp2 = sh_util_safe_name (theFile->fullpath);
3667 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_TOOLATE,
3668 (long)(tend - tstart), tmp2);
3669 SH_FREE(tmp2);
3670 }
3671
3672 if (fd >= 0)
3673 {
3674 fstat_return = retry_fstat (FIL__, __LINE__, fd, &fbuf);
3675
3676 if (fstat_return)
3677 {
3678 char * stale;
3679
3680 fstat_errno = errno;
3681
3682 stale = sl_check_stale();
3683
3684 if (stale)
3685 {
3686 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, fstat_errno,
3687 MSG_E_SUBGEN,
3688 stale, _("sh_unix_getinfo_fstat"));
3689 }
3690
3691 if (try == 0) /* obsolete, but we keep this, just in case */
3692 {
3693 ++try;
3694 sl_close(rval_open);
3695 goto try_again;
3696 }
3697 }
3698 }
3699 else
3700 {
3701 fd = -1;
3702 }
3703
3704
3705 /* --- case 1: lstat failed ---
3706 */
3707 if (stat_return != 0)
3708 {
3709 stat_return = errno;
3710 if (!SL_ISERROR(rval_open))
3711 sl_close(rval_open);
3712 if (sh.flag.checkSum == SH_CHECK_INIT ||
3713 (sh_hash_have_it (theFile->fullpath) >= 0 &&
3714 (!SH_FFLAG_REPORTED_SET(theFile->file_reported))))
3715 {
3716 if (S_FALSE == sh_ignore_chk_del(theFile->fullpath)) {
3717 char errbuf[SH_ERRBUF_SIZE];
3718 uid_t euid;
3719 (void) sl_get_euid(&euid);
3720 tmp2 = sh_util_safe_name (theFile->fullpath);
3721 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_STAT,
3722 _("lstat"),
3723 sh_error_message (stat_errno, errbuf, sizeof(errbuf)),
3724 (long) euid,
3725 tmp2);
3726 SH_FREE(tmp2);
3727 }
3728 }
3729 SL_RETURN((-1),_("sh_unix_getinfo"));
3730 }
3731
3732 /* --- case 2: not a regular file ---
3733 */
3734 else if (! S_ISREG(buf.st_mode))
3735 {
3736 if (fileHash != NULL)
3737 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3738 }
3739
3740 /* --- case 3a: a regular file, fstat ok ---
3741 */
3742 else if (fstat_return == 0 &&
3743 buf.st_mode == fbuf.st_mode &&
3744 buf.st_ino == fbuf.st_ino &&
3745 buf.st_uid == fbuf.st_uid &&
3746 buf.st_gid == fbuf.st_gid &&
3747 buf.st_dev == fbuf.st_dev )
3748 {
3749 if (fileHash != NULL)
3750 {
3751 if ((theFile->check_mask & MODI_CHK) == 0)
3752 {
3753 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3754 }
3755 else if ((theFile->check_mask & MODI_PREL) != 0 &&
3756 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
3757 alert_timeout, theFile->fullpath))
3758 {
3759 if (0 != sh_prelink_run (theFile->fullpath,
3760 fileHash, alert_timeout))
3761 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3762 }
3763 else
3764 {
3765 char hashbuf[KEYBUF_SIZE];
3766 UINT64 length_nolim = TIGER_NOLIM;
3767
3768 if (MODI_TXT_ENABLED(theFile->check_mask) && fbuf.st_size < (10 * SH_TXT_MAX))
3769 {
3770 sl_init_content (rval_open, fbuf.st_size);
3771 }
3772
3773 sl_strlcpy(fileHash,
3774 sh_tiger_generic_hash (theFile->fullpath,
3775 rval_open, &length_nolim,
3776 alert_timeout,
3777 hashbuf, sizeof(hashbuf)),
3778 KEY_LEN+1);
3779
3780 content = sl_get_content(rval_open);
3781 content = sh_string_copy(content);
3782
3783 if ((theFile->check_mask & MODI_SGROW) != 0)
3784 {
3785 fbuf.st_size = (off_t) length_nolim;
3786 buf.st_size = fbuf.st_size;
3787 sl_rewind(rval_open);
3788 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3789 &fileHash[KEY_LEN + 1],
3790 alert_timeout, rval_open);
3791 }
3792 }
3793 }
3794 }
3795
3796 /* --- case 3b: a regular file, fstat ok, but different ---
3797 */
3798 else if (fstat_return == 0 && S_ISREG(fbuf.st_mode))
3799 {
3800 memcpy (&buf, &fbuf, sizeof( struct stat ));
3801
3802 if (fileHash != NULL)
3803 {
3804 if ((theFile->check_mask & MODI_CHK) == 0)
3805 {
3806 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3807 }
3808 else if (policy == SH_LEVEL_PRELINK &&
3809 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
3810 alert_timeout, theFile->fullpath))
3811 {
3812 if (0 != sh_prelink_run (theFile->fullpath,
3813 fileHash, alert_timeout))
3814 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3815 }
3816 else
3817 {
3818 char hashbuf[KEYBUF_SIZE];
3819 UINT64 length_nolim = TIGER_NOLIM;
3820
3821 if (MODI_TXT_ENABLED(theFile->check_mask) && fbuf.st_size < (10 * SH_TXT_MAX))
3822 {
3823 sl_init_content (rval_open, fbuf.st_size);
3824 }
3825
3826 sl_strlcpy(fileHash,
3827 sh_tiger_generic_hash (theFile->fullpath, rval_open,
3828 &length_nolim,
3829 alert_timeout,
3830 hashbuf, sizeof(hashbuf)),
3831 KEY_LEN + 1);
3832
3833 content = sl_get_content(rval_open);
3834 content = sh_string_copy(content);
3835
3836 if ((theFile->check_mask & MODI_SGROW) != 0)
3837 {
3838 fbuf.st_size = (off_t) length_nolim;
3839 buf.st_size = fbuf.st_size;
3840 sl_rewind(rval_open);
3841 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3842 &fileHash[KEY_LEN + 1],
3843 alert_timeout, rval_open);
3844 }
3845 }
3846 }
3847 }
3848
3849 /* --- case 4: a regular file, fstat failed ---
3850 */
3851
3852 else /* fstat_return != 0 or !S_ISREG(fbuf.st_mode) or open() failed */
3853 {
3854 uid_t euid;
3855
3856 if (fileHash != NULL)
3857 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3858
3859 if ((theFile->check_mask & MODI_CHK) != 0)
3860 {
3861 tmp2 = sh_util_safe_name (theFile->fullpath);
3862
3863
3864 if (fd >= 0 && fstat_return != 0)
3865 {
3866 char errbuf[SH_ERRBUF_SIZE];
3867 (void) sl_get_euid(&euid);
3868
3869 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_STAT,
3870 _("fstat"),
3871 sh_error_message (fstat_errno, errbuf, sizeof(errbuf)),
3872 (long) euid,
3873 tmp2);
3874 }
3875 else if (fd >= 0 && !S_ISREG(fbuf.st_mode))
3876 {
3877 sh_error_handle (level, FIL__, __LINE__, fstat_errno,
3878 MSG_E_NOTREG, tmp2);
3879 }
3880 else
3881 {
3882 char errbuf[SH_ERRBUF_SIZE];
3883 char errbuf2[SH_ERRBUF_SIZE];
3884 sl_strlcpy(errbuf, sl_error_string(rval_open), sizeof(errbuf));
3885 sh_error_message(err_open, errbuf2, sizeof(errbuf2));
3886 sh_error_handle (level, FIL__, __LINE__, err_open,
3887 MSG_E_READ, errbuf, errbuf2, tmp2);
3888 }
3889 SH_FREE(tmp2);
3890 }
3891 }
3892
3893
3894 /* --- Determine file type. ---
3895 */
3896 memset (theFile->c_mode, '-', CMODE_SIZE-1);
3897 theFile->c_mode[CMODE_SIZE-1] = '\0';
3898
3899 memset (theFile->link_c_mode, '-', CMODE_SIZE-1);
3900 theFile->link_c_mode[CMODE_SIZE-1] = '\0';
3901
3902 sh_unix_getinfo_type (&buf, &type, theFile->c_mode);
3903 theFile->type = type;
3904
3905#if defined(__linux__) || defined(HAVE_STAT_FLAGS)
3906
3907 /* --- Determine file attributes. ---
3908 */
3909 memset (theFile->c_attributes, '-', ATTRBUF_SIZE);
3910 theFile->c_attributes[ATTRBUF_USED] = '\0';
3911 theFile->attributes = 0;
3912
3913#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
3914 if (theFile->c_mode[0] != 'c' && theFile->c_mode[0] != 'b' &&
3915 theFile->c_mode[0] != 'l' )
3916 sh_unix_getinfo_attr(theFile->fullpath,
3917 &theFile->attributes, theFile->c_attributes,
3918 fd, &buf);
3919#endif
3920#endif
3921
3922#if defined(USE_XATTR) && defined(USE_ACL)
3923 if (sh_unix_check_selinux == S_TRUE || sh_unix_check_acl == S_TRUE)
3924 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3925#elif defined(USE_XATTR)
3926 if (sh_unix_check_selinux == S_TRUE)
3927 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3928#elif defined(USE_ACL)
3929 if (sh_unix_check_acl == S_TRUE)
3930 theFile->attr_string = sh_unix_getinfo_acl (theFile->fullpath, fd, &buf);
3931#else
3932 theFile->attr_string = NULL;
3933#endif
3934
3935 if (!SL_ISERROR(rval_open))
3936 sl_close(rval_open);
3937
3938
3939 /* --- I/O limit. ---
3940 */
3941 if (IO_Limit > 0)
3942 {
3943 runtim = (long) (time(NULL) - sh.statistics.time_start);
3944
3945 if (runtim > 0 && (long)(sh.statistics.bytes_hashed/runtim) > IO_Limit)
3946 retry_msleep(1, 0);
3947 }
3948
3949 /* --- Determine permissions. ---
3950 */
3951 sh_unix_getinfo_mode (&buf, &mode, theFile->c_mode);
3952
3953 /* --- Trivia. ---
3954 */
3955 theFile->dev = buf.st_dev;
3956 theFile->ino = buf.st_ino;
3957 theFile->mode = buf.st_mode;
3958 theFile->hardlinks = buf.st_nlink;
3959 theFile->owner = buf.st_uid;
3960 theFile->group = buf.st_gid;
3961 theFile->rdev = buf.st_rdev;
3962 theFile->size = buf.st_size;
3963 theFile->blksize = (unsigned long) buf.st_blksize;
3964 theFile->blocks = (unsigned long) buf.st_blocks;
3965 theFile->atime = buf.st_atime;
3966 theFile->mtime = buf.st_mtime;
3967 theFile->ctime = buf.st_ctime;
3968
3969
3970 /* --- Owner and group. ---
3971 */
3972
3973 if (NULL == sh_unix_getGIDname(SH_ERR_ALL, buf.st_gid, theFile->c_group, GROUP_MAX+1)) {
3974
3975 tmp2 = sh_util_safe_name (theFile->fullpath);
3976
3977 if (policy == SH_LEVEL_ALLIGNORE)
3978 {
3979 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
3980 MSG_FI_NOGRP,
3981 (long) buf.st_gid, tmp2);
3982 }
3983 else
3984 {
3985 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
3986 MSG_FI_NOGRP,
3987 (long) buf.st_gid, tmp2);
3988 }
3989 SH_FREE(tmp2);
3990 sl_snprintf(theFile->c_group, GROUP_MAX+1, "%d", (long) buf.st_gid);
3991 }
3992
3993
3994 if (NULL == sh_unix_getUIDname(SH_ERR_ALL, buf.st_uid, theFile->c_owner, USER_MAX+1)) {
3995
3996 tmp2 = sh_util_safe_name (theFile->fullpath);
3997
3998 if (policy == SH_LEVEL_ALLIGNORE)
3999 {
4000 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
4001 MSG_FI_NOUSR,
4002 (long) buf.st_uid, tmp2);
4003 }
4004 else
4005 {
4006 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
4007 MSG_FI_NOUSR,
4008 (long) buf.st_uid, tmp2);
4009 }
4010 SH_FREE(tmp2);
4011 sl_snprintf(theFile->c_owner, USER_MAX+1, "%d", (long) buf.st_uid);
4012 }
4013
4014 /* --- Output the file. ---
4015 */
4016 if (flag_err_debug == SL_TRUE)
4017 {
4018 tmp2 = sh_util_safe_name ((filename == NULL) ?
4019 theFile->fullpath : filename);
4020 (void) sh_unix_time(theFile->mtime, timestr, sizeof(timestr));
4021 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LIST,
4022 theFile->c_mode,
4023 theFile->hardlinks,
4024 theFile->c_owner,
4025 theFile->c_group,
4026 (unsigned long) theFile->size,
4027 timestr,
4028 tmp2);
4029 SH_FREE(tmp2);
4030 }
4031
4032 /* --- Check for links. ---
4033 */
4034 if (theFile->c_mode[0] == 'l')
4035 {
4036 linknamebuf = SH_ALLOC(PATH_MAX);
4037
4038 /* flawfinder: ignore */
4039 linksize = readlink (theFile->fullpath, linknamebuf, PATH_MAX-1);
4040
4041 if (linksize < (PATH_MAX-1) && linksize >= 0)
4042 linknamebuf[linksize] = '\0';
4043 else
4044 linknamebuf[PATH_MAX-1] = '\0';
4045
4046 if (linksize < 0)
4047 {
4048 char errbuf[SH_ERRBUF_SIZE];
4049 linksize = errno;
4050 tmp2 = sh_util_safe_name (theFile->fullpath);
4051 sh_error_handle (level, FIL__, __LINE__, linksize, MSG_FI_RDLNK,
4052 sh_error_message (linksize, errbuf, sizeof(errbuf)), tmp2);
4053 SH_FREE(tmp2);
4054 SH_FREE(linknamebuf);
4055 theFile->link_path = sh_util_strdup("-");
4056 SL_RETURN((-1),_("sh_unix_getinfo"));
4057 }
4058
4059 if (linknamebuf[0] == '/')
4060 {
4061 theFile->link_path = sh_util_strdup (linknamebuf);
4062 }
4063 else
4064 {
4065 tmp = sh_util_dirname(theFile->fullpath);
4066 if (tmp) {
4067 theFile->link_path = SH_ALLOC(PATH_MAX);
4068 sl_strlcpy (theFile->link_path, tmp, PATH_MAX);
4069 SH_FREE(tmp);
4070 } else {
4071 theFile->link_path = SH_ALLOC(PATH_MAX);
4072 theFile->link_path[0] = '\0';
4073 }
4074 /*
4075 * Only attach '/' if not root directory. Handle "//", which
4076 * according to POSIX is implementation-defined, and may be
4077 * different from "/" (however, three or more '/' will collapse
4078 * to one).
4079 */
4080 tmp = theFile->link_path; while (*tmp == '/') ++tmp;
4081 if (*tmp != '\0')
4082 {
4083 sl_strlcat (theFile->link_path, "/", PATH_MAX);
4084 }
4085 sl_strlcat (theFile->link_path, linknamebuf, PATH_MAX);
4086 }
4087
4088 /* stat the link
4089 */
4090 stat_return = retry_lstat (FIL__, __LINE__, theFile->link_path, &lbuf);
4091
4092 /* check for error
4093 */
4094 if (stat_return != 0)
4095 {
4096 stat_return = errno;
4097 tmp = sh_util_safe_name (theFile->fullpath);
4098 tmp2 = sh_util_safe_name (theFile->link_path);
4099 if (stat_return != ENOENT)
4100 {
4101 uid_t euid;
4102 char errbuf[SH_ERRBUF_SIZE];
4103
4104 (void) sl_get_euid(&euid);
4105 sh_error_handle (level, FIL__, __LINE__, stat_return,
4106 MSG_FI_STAT,
4107 _("lstat"),
4108 sh_error_message (stat_return,errbuf, sizeof(errbuf)),
4109 (long) euid,
4110 tmp2);
4111 }
4112 else
4113 {
4114 /* a dangling link -- everybody seems to have plenty of them
4115 */
4116 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_DLNK,
4117 tmp, tmp2);
4118 }
4119 theFile->linkisok = BAD;
4120 SH_FREE(tmp);
4121 SH_FREE(tmp2);
4122 SH_FREE(linknamebuf);
4123 /*
4124 * changed Tue Feb 10 16:16:13 CET 2004:
4125 * add dangling symlinks into database
4126 * SL_RETURN((-1),_("sh_unix_getinfo"));
4127 */
4128 theFile->linkmode = 0;
4129 SL_RETURN((0),_("sh_unix_getinfo"));
4130 }
4131
4132 theFile->linkisok = GOOD;
4133
4134
4135 /* --- Determine file type. ---
4136 */
4137 sh_unix_getinfo_type (&lbuf, &type, theFile->link_c_mode);
4138 theFile->type = type;
4139
4140 /* --- Determine permissions. ---
4141 */
4142 sh_unix_getinfo_mode (&lbuf, &mode, theFile->link_c_mode);
4143 theFile->linkmode = lbuf.st_mode;
4144
4145 /* --- Output the link. ---
4146 */
4147 if (theFile->linkisok == GOOD)
4148 {
4149 tmp2 = sh_util_safe_name (linknamebuf);
4150 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LLNK,
4151 theFile->link_c_mode, tmp2);
4152 SH_FREE(tmp2);
4153 }
4154 SH_FREE(linknamebuf);
4155 }
4156 else /* not a link */
4157 {
4158 if (content)
4159 {
4160#ifdef HAVE_LIBZ
4161 unsigned long clen;
4162 unsigned char * compressed;
4163#ifdef HAVE_COMPRESSBOUND
4164 clen = compressBound(sh_string_len(content));
4165#else
4166 if (sh_string_len(content) > 10*SH_TXT_MAX)
4167 clen = SH_TXT_MAX;
4168 else
4169 clen = 13 + (int)(1.0001*sh_string_len(content));
4170#endif
4171 compressed = SH_ALLOC(clen);
4172 if (Z_OK == compress(compressed, &clen,
4173 (unsigned char *) sh_string_str(content),
4174 sh_string_len(content)))
4175 {
4176 if (clen < SH_TXT_MAX)
4177 {
4178 sh_util_base64_enc_alloc (&(theFile->link_path),
4179 (char *) compressed, clen);
4180 }
4181 else
4182 {
4183 char tmsg[128];
4184 char * tpath = sh_util_safe_name (theFile->fullpath);
4185 sl_snprintf(tmsg, sizeof(tmsg),
4186 _("compressed file too large (%lu bytes)"),
4187 clen);
4188 sh_error_handle (SH_ERR_WARN, FIL__, __LINE__, -1,
4189 MSG_E_SUBGPATH, tmsg,
4190 _("sh_unix_getinfo"), tpath);
4191 SH_FREE(tpath);
4192 }
4193 }
4194 SH_FREE(compressed);
4195#endif
4196 sh_string_destroy(&content);
4197 }
4198 }
4199 SL_RETURN((0),_("sh_unix_getinfo"));
4200}
4201
4202/* #if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE) */
4203#endif
4204
4205int sh_unix_unlock(char * lockfile, char * flag)
4206{
4207 int error = 0;
4208
4209 SL_ENTER(_("sh_unix_unlock"));
4210
4211 if (sh.flag.isdaemon == S_FALSE && flag == NULL)
4212 SL_RETURN((0),_("sh_unix_unlock"));
4213
4214 /* --- Logfile is not locked to us. ---
4215 */
4216 if (sh.flag.islocked == BAD && flag != NULL)
4217 SL_RETURN((-1),_("sh_unix_unlock"));
4218
4219 /* --- Check whether the directory is secure. ---
4220 */
4221 if (0 != tf_trust_check (lockfile, SL_YESPRIV))
4222 SL_RETURN((-1),_("sh_unix_unlock"));
4223
4224 /* --- Delete the lock file. ---
4225 */
4226 error = retry_aud_unlink (FIL__, __LINE__, lockfile);
4227
4228 if (error == 0)
4229 {
4230 if (flag != NULL)
4231 sh.flag.islocked = BAD; /* not locked anymore */
4232 }
4233 else if (flag != NULL)
4234 {
4235 char errbuf[SH_ERRBUF_SIZE];
4236 error = errno;
4237 sh_error_handle ((-1), FIL__, __LINE__, error, MSG_E_UNLNK,
4238 sh_error_message(error, errbuf, sizeof(errbuf)),
4239 lockfile);
4240 SL_RETURN((-1),_("sh_unix_unlock"));
4241 }
4242 SL_RETURN((0),_("sh_unix_unlock"));
4243}
4244
4245int sh_unix_check_piddir (char * pidpath)
4246{
4247 static struct stat buf;
4248 int status = 0;
4249 char * pid_dir;
4250
4251 SL_ENTER(_("sh_unix_check_piddir"));
4252
4253 pid_dir = sh_util_dirname (pidpath);
4254
4255 status = retry_lstat (FIL__, __LINE__, pid_dir, &buf);
4256
4257 if (status < 0 && errno == ENOENT)
4258 {
4259 status = mkdir (pid_dir, 0777);
4260 if (status < 0)
4261 {
4262 sh_error_handle ((-1), FIL__, __LINE__, status,
4263 MSG_E_SUBGEN,
4264 _("Cannot create PID directory"),
4265 _("sh_unix_check_piddir"));
4266 SH_FREE(pid_dir);
4267 SL_RETURN((-1),_("sh_unix_check_piddir"));
4268 }
4269 }
4270 else if (!S_ISDIR(buf.st_mode))
4271 {
4272 sh_error_handle ((-1), FIL__, __LINE__, status,
4273 MSG_E_SUBGEN,
4274 _("Path of PID directory refers to a non-directory object"),
4275 _("sh_unix_check_piddir"));
4276 SH_FREE(pid_dir);
4277 SL_RETURN((-1),_("sh_unix_check_piddir"));
4278 }
4279 SH_FREE(pid_dir);
4280 SL_RETURN((0),_("sh_unix_check_piddir"));
4281}
4282
4283int sh_unix_lock (char * lockfile, char * flag)
4284{
4285 int filed;
4286 int errnum;
4287 char myPid[64];
4288 SL_TICKET fd;
4289 extern int get_the_fd (SL_TICKET ticket);
4290
4291 SL_ENTER(_("sh_unix_lock"));
4292
4293 sprintf (myPid, "%ld\n", (long) sh.pid); /* known to fit */
4294
4295 if (flag == NULL) /* PID file, check for directory */
4296 {
4297 if (0 != sh_unix_check_piddir (lockfile))
4298 {
4299 SL_RETURN((-1),_("sh_unix_lock"));
4300 }
4301 }
4302
4303 fd = sl_open_safe_rdwr (FIL__, __LINE__,
4304 lockfile, SL_YESPRIV); /* fails if file exists */
4305
4306 if (!SL_ISERROR(fd))
4307 {
4308 errnum = sl_write (fd, myPid, sl_strlen(myPid));
4309 filed = get_the_fd(fd);
4310 fchmod (filed, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
4311 sl_close (fd);
4312
4313 if (!SL_ISERROR(errnum))
4314 {
4315 if (flag != NULL)
4316 sh.flag.islocked = GOOD;
4317 SL_RETURN((0),_("sh_unix_lock"));
4318 }
4319 }
4320
4321 TPT((0, FIL__, __LINE__, _("msg=<open pid file failed>\n")));
4322 if (flag != NULL)
4323 sh.flag.islocked = BAD;
4324 SL_RETURN((-1),_("sh_unix_lock"));
4325
4326 /* notreached */
4327}
4328
4329
4330/* check whether file is locked
4331 */
4332int sh_unix_test_and_lock (char * filename, char * lockfile)
4333{
4334 static struct stat buf;
4335 int status = 0;
4336
4337
4338 SL_TICKET fd;
4339 char line_in[128];
4340
4341 SL_ENTER(_("sh_unix_test_and_lock"));
4342
4343 status = retry_lstat (FIL__, __LINE__, lockfile, &buf);
4344
4345 /* --- No lock file found, try to lock. ---
4346 */
4347
4348 if (status < 0 && errno == ENOENT)
4349 {
4350 if (0 == sh_unix_lock (lockfile, filename))
4351 {
4352 if (filename != NULL)
4353 sh.flag.islocked = GOOD;
4354 SL_RETURN((0),_("sh_unix_test_and_lock"));
4355 }
4356 else
4357 {
4358 sh_error_handle ((-1), FIL__, __LINE__, status,
4359 MSG_E_SUBGEN,
4360 (filename == NULL) ? _("Cannot create PID file (1)") : _("Cannot create lock file (1)"),
4361 _("sh_unix_test_and_lock"));
4362 SL_RETURN((-1),_("sh_unix_test_and_lock"));
4363 }
4364 }
4365 else if (status == 0 && buf.st_size == 0)
4366 {
4367 if (filename != NULL)
4368 sh.flag.islocked = GOOD;
4369 sh_unix_unlock (lockfile, filename);
4370 if (filename != NULL)
4371 sh.flag.islocked = BAD;
4372 if (0 == sh_unix_lock (lockfile, filename))
4373 {
4374 if (filename != NULL)
4375 sh.flag.islocked = GOOD;
4376 SL_RETURN((0),_("sh_unix_test_and_lock"));
4377 }
4378 else
4379 {
4380 sh_error_handle ((-1), FIL__, __LINE__, status,
4381 MSG_E_SUBGEN,
4382 (filename == NULL) ? _("Cannot create PID file (2)") : _("Cannot create lock file (2)"),
4383 _("sh_unix_test_and_lock"));
4384 SL_RETURN((-1),_("sh_unix_test_and_lock"));
4385 }
4386 }
4387
4388 /* --- Check on lock. ---
4389 */
4390
4391 if (status >= 0)
4392 {
4393 fd = sl_open_read (FIL__, __LINE__, lockfile, SL_YESPRIV);
4394 if (SL_ISERROR(fd))
4395 sh_error_handle ((-1), FIL__, __LINE__, fd,
4396 MSG_E_SUBGEN,
4397 (filename == NULL) ? _("Cannot open PID file for read") : _("Cannot open lock file for read"),
4398 _("sh_unix_test_and_lock"));
4399 }
4400 else
4401 fd = -1;
4402
4403 if (!SL_ISERROR(fd))
4404 {
4405 /* read the PID in the lock file
4406 */
4407 status = sl_read (fd, line_in, sizeof(line_in));
4408 line_in[sizeof(line_in)-1] = '\0';
4409
4410 /* convert to numeric
4411 */
4412 if (status > 0)
4413 {
4414 errno = 0;
4415 status = strtol(line_in, (char **)NULL, 10);
4416 if (errno == ERANGE || status <= 0)
4417 {
4418 sh_error_handle ((-1), FIL__, __LINE__, status,
4419 MSG_E_SUBGEN,
4420 (filename == NULL) ? _("Bad PID in PID file") : _("Bad PID in lock file"),
4421 _("sh_unix_test_and_lock"));
4422
4423 status = -1;
4424 }
4425 }
4426 else
4427 {
4428 sh_error_handle ((-1), FIL__, __LINE__, status,
4429 MSG_E_SUBGEN,
4430 (filename == NULL) ? _("Cannot read PID file") : _("Cannot read lock file"),
4431 _("sh_unix_test_and_lock"));
4432 }
4433 sl_close(fd);
4434
4435 if (status > 0 && (unsigned int) status == sh.pid)
4436 {
4437 if (filename != NULL)
4438 sh.flag.islocked = GOOD;
4439 SL_RETURN((0),_("sh_unix_test_and_lock"));
4440 }
4441
4442
4443 /* --- Check whether the process exists. ---
4444 */
4445 if (status > 0)
4446 {
4447 errno = 0;
4448 status = aud_kill (FIL__, __LINE__, status, 0);
4449
4450 /* Does not exist, so remove the stale lock
4451 * and create a new one.
4452 */
4453 if (status < 0 && errno == ESRCH)
4454 {
4455 if (filename != NULL)
4456 sh.flag.islocked = GOOD;
4457 if (0 != sh_unix_unlock(lockfile, filename) && (filename !=NULL))
4458 sh.flag.islocked = BAD;
4459 else
4460 {
4461 if (0 == sh_unix_lock (lockfile, filename))
4462 {
4463 if (filename != NULL)
4464 sh.flag.islocked = GOOD;
4465 SL_RETURN((0),_("sh_unix_test_and_lock"));
4466 }
4467 else
4468 {
4469 sh_error_handle ((-1), FIL__, __LINE__, status,
4470 MSG_E_SUBGEN,
4471 (filename == NULL) ? _("Cannot create PID file (3)") : _("Cannot create lock file (3)"),
4472 _("sh_unix_test_and_lock"));
4473 }
4474 if (filename != NULL)
4475 sh.flag.islocked = BAD;
4476 }
4477 }
4478 else
4479 {
4480 sh_error_handle ((-1), FIL__, __LINE__, status,
4481 MSG_E_SUBGEN,
4482 (filename == NULL) ? _("Cannot remove stale PID file, PID may be a running process") : _("Cannot remove stale lock file, PID may be a running process"),
4483 _("sh_unix_test_and_lock"));
4484 if (filename != NULL)
4485 sh.flag.islocked = BAD;
4486 }
4487 }
4488 }
4489 SL_RETURN((-1),_("sh_unix_testlock"));
4490}
4491
4492/* write the PID file
4493 */
4494int sh_unix_write_pid_file()
4495{
4496 return sh_unix_test_and_lock(NULL, sh.srvlog.alt);
4497}
4498
4499/* write lock for filename
4500 */
4501int sh_unix_write_lock_file(char * filename)
4502{
4503 size_t len;
4504 int res;
4505 char * lockfile;
4506
4507 if (filename == NULL)
4508 return (-1);
4509
4510 len = sl_strlen(filename);
4511 if (sl_ok_adds(len, 6))
4512 len += 6;
4513 lockfile = SH_ALLOC(len);
4514 sl_strlcpy(lockfile, filename, len);
4515 sl_strlcat(lockfile, _(".lock"), len);
4516 res = sh_unix_test_and_lock(filename, lockfile);
4517 SH_FREE(lockfile);
4518 return res;
4519}
4520
4521/* rm lock for filename
4522 */
4523int sh_unix_rm_lock_file(char * filename)
4524{
4525 size_t len;
4526 int res;
4527 char * lockfile;
4528
4529 if (filename == NULL)
4530 return (-1);
4531
4532 len = sl_strlen(filename);
4533 if (sl_ok_adds(len, 6))
4534 len += 6;
4535 lockfile = SH_ALLOC(len);
4536 sl_strlcpy(lockfile, filename, len);
4537 sl_strlcat(lockfile, _(".lock"), len);
4538
4539 res = sh_unix_unlock(lockfile, filename);
4540 SH_FREE(lockfile);
4541 return res;
4542}
4543
4544/* rm lock for filename
4545 */
4546int sh_unix_rm_pid_file()
4547{
4548 return sh_unix_unlock(sh.srvlog.alt, NULL);
4549}
4550
4551/* Test whether file exists
4552 */
4553int sh_unix_file_exists(char * path)
4554{
4555 struct stat buf;
4556
4557 SL_ENTER(_("sh_unix_file_exists"));
4558
4559 if (0 == retry_lstat(FIL__, __LINE__, path, &buf))
4560 SL_RETURN( S_TRUE, _("sh_unix_file_exists"));
4561 else
4562 SL_RETURN( S_FALSE, _("sh_unix_file_exists"));
4563}
4564
4565
4566/* Test whether file exists, is a character device, and allows read
4567 * access.
4568 */
4569int sh_unix_device_readable(int fd)
4570{
4571 struct stat buf;
4572
4573 SL_ENTER(_("sh_unix_device_readable"));
4574
4575 if (retry_fstat(FIL__, __LINE__, fd, &buf) == -1)
4576 SL_RETURN( (-1), _("sh_unix_device_readable"));
4577 else if ( S_ISCHR(buf.st_mode) && 0 != (S_IROTH & buf.st_mode) )
4578 SL_RETURN( (0), _("sh_unix_device_readable"));
4579 else
4580 SL_RETURN( (-1), _("sh_unix_device_readable"));
4581}
4582
4583static char preq[16];
4584
4585/* return true if database is remote
4586 */
4587int file_is_remote ()
4588{
4589 static int init = 0;
4590 struct stat buf;
4591
4592 SL_ENTER(_("file_is_remote"));
4593
4594 if (init == 0)
4595 {
4596 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4597 ++init;
4598 }
4599 if (0 == sl_strncmp (sh.data.path, preq, 15))
4600 {
4601 if (sh.data.path[15] != '\0') /* should be start of path */
4602 {
4603 if (0 == stat(&(sh.data.path[15]), &buf))
4604 {
4605 SL_RETURN( S_FALSE, _("file_is_remote"));
4606 }
4607 }
4608 SL_RETURN( S_TRUE, _("file_is_remote"));
4609 }
4610 SL_RETURN( S_FALSE, _("file_is_remote"));
4611}
4612
4613/* Return the path to the configuration/database file.
4614 */
4615char * file_path(char what, char flag)
4616{
4617 static int init = 0;
4618
4619 SL_ENTER(_("file_path"));
4620
4621 if (init == 0)
4622 {
4623 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4624 ++init;
4625 }
4626
4627 switch (what)
4628 {
4629
4630 case 'C':
4631 if (0 == sl_strncmp (sh.conf.path, preq, 15))
4632 {
4633#if defined(SH_WITH_SERVER)
4634 if (sh.flag.isserver == S_TRUE && sl_strlen(sh.conf.path) == 15)
4635 SL_RETURN( NULL, _("file_path"));
4636 if (sh.flag.isserver == S_TRUE)
4637 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4638#endif
4639 if (flag == 'R')
4640 SL_RETURN( preq, _("file_path"));
4641 if (flag == 'I')
4642 {
4643 if (sl_strlen(sh.conf.path) == 15)
4644 SL_RETURN( NULL, _("file_path"));
4645 else
4646 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4647 }
4648 SL_RETURN ( preq, _("file_path"));
4649 }
4650 else
4651 SL_RETURN( sh.conf.path, _("file_path"));
4652 /* break; *//* unreachable */
4653
4654 case 'D':
4655 if (0 == sl_strncmp (sh.data.path, preq, 15))
4656 {
4657 if (flag == 'R')
4658 SL_RETURN( preq, _("file_path"));
4659 if (flag == 'W' && sl_strlen(sh.data.path) == 15)
4660 SL_RETURN (NULL, _("file_path"));
4661 if (flag == 'W')
4662 SL_RETURN( &(sh.data.path[15]), _("file_path"));
4663 }
4664 else
4665 SL_RETURN( sh.data.path, _("file_path"));
4666 break;
4667
4668 default:
4669 SL_RETURN( NULL, _("file_path"));
4670 }
4671
4672 return NULL; /* notreached */
4673}
4674/************************************************/
4675/**** Mlock Utilities ****/
4676/************************************************/
4677
4678#include <limits.h>
4679
4680int sh_unix_pagesize()
4681{
4682 int pagesize = 4096;
4683#if defined(_SC_PAGESIZE)
4684 pagesize = sysconf(_SC_PAGESIZE);
4685#elif defined(_SC_PAGE_SIZE)
4686 pagesize = sysconf(_SC_PAGE_SIZE);
4687#elif defined(HAVE_GETPAGESIZE)
4688 pagesize = getpagesize();
4689#elif defined(PAGESIZE)
4690 pagesize = PAGESIZE;
4691#endif
4692
4693 return ((pagesize > 0) ? pagesize : 4096);
4694}
4695
4696typedef struct sh_page_lt {
4697 unsigned long page_start;
4698 int page_refcount;
4699 char file[64];
4700 int line;
4701 struct sh_page_lt * next;
4702} sh_page_l;
4703
4704sh_page_l * sh_page_locked = NULL;
4705volatile int page_locking = 0;
4706
4707unsigned long sh_unix_lookup_page (void * in_addr, size_t len, int * num_pages)
4708{
4709 int pagesize = sh_unix_pagesize();
4710 unsigned long addr = (unsigned long) in_addr;
4711
4712 unsigned long pagebase;
4713 unsigned long pagediff;
4714 unsigned long pagenum = addr / pagesize;
4715
4716 SL_ENTER(_("sh_unix_lookup_page"));
4717#if 0
4718 fprintf(stderr, "mlock: --> base %ld, pagenum: %ld\n",
4719 addr, pagenum);
4720#endif
4721
4722 /* address of first page
4723 */
4724 pagebase = pagenum * pagesize;
4725
4726 /* number of pages
4727 */
4728 pagediff = (addr + len) - pagebase;
4729 pagenum = pagediff / pagesize;
4730 if (pagenum * pagesize < pagediff)
4731 ++pagenum;
4732
4733#if 0
4734 fprintf(stderr, "mlock: --> pagebase %ld, pagediff %ld, (addr + len) %ld\n",
4735 pagebase, pagediff, (addr + len));
4736#endif
4737
4738 *num_pages = pagenum;
4739 SL_RETURN((pagebase), _("sh_unix_lookup_page"));
4740}
4741
4742
4743#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4744
4745SH_MUTEX_STATIC(mutex_mlock,PTHREAD_MUTEX_INITIALIZER);
4746
4747int sh_unix_mlock (const char * file, int line, void * in_addr, size_t len)
4748{
4749 int num_pages;
4750 int status = 0;
4751 int pagesize;
4752 sh_page_l * page_list;
4753 unsigned long addr;
4754#ifdef TEST_MLOCK
4755 int i = 0;
4756#endif
4757
4758 SL_ENTER(_("sh_unix_mlock"));
4759
4760 /* There's no cancellation point here, except if tracing is on
4761 */
4762 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4763
4764 page_list = sh_page_locked;
4765
4766 if (0 != page_locking)
4767 {
4768 status = -1;
4769 goto exit_mlock;
4770 }
4771
4772 page_locking = 1;
4773
4774 pagesize = sh_unix_pagesize();
4775 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4776
4777#ifdef TEST_MLOCK
4778 fprintf(stderr, "mlock: addr %ld, base %ld, pages: %d, length %d\n",
4779 (unsigned long) in_addr, addr, num_pages, len);
4780#endif
4781
4782 /* increase refcount of locked pages
4783 * addr is first page; num_pages is #(consecutive pages) to lock
4784 */
4785
4786 while ((page_list != NULL) && (num_pages > 0))
4787 {
4788#ifdef TEST_MLOCK
4789 fprintf(stderr, "mlock: check page %d: %ld [%d]\n",
4790 i, page_list->page_start, page_list->page_refcount);
4791#endif
4792 if (page_list->page_start == addr)
4793 {
4794 page_list->page_refcount += 1;
4795 num_pages -= 1;
4796 addr += pagesize;
4797#ifdef TEST_MLOCK
4798 fprintf(stderr, "mlock: found page %d: %ld [%d], next page %ld\n",
4799 i, page_list->page_start, page_list->page_refcount, addr);
4800#endif
4801 }
4802#ifdef TEST_MLOCK
4803 ++i;
4804#endif
4805 page_list = page_list->next;
4806 }
4807
4808 /* mlock some more pages, if needed
4809 */
4810 while (num_pages > 0)
4811 {
4812#ifdef TEST_MLOCK
4813 fprintf(stderr, "mlock: lock page %d: mlock %ld [num_pages %d]\n",
4814 i, addr, num_pages);
4815 ++i;
4816#endif
4817 page_list = SH_ALLOC(sizeof(sh_page_l));
4818 page_list->page_start = addr;
4819 page_list->page_refcount = 1;
4820 sl_strlcpy(page_list->file, file, 64);
4821 page_list->line = line;
4822 status = mlock( (void *) addr, pagesize);
4823 if (status != 0)
4824 {
4825#ifdef TEST_MLOCK
4826 char errbuf[SH_ERRBUF_SIZE];
4827 fprintf(stderr, "mlock: error: %s\n",
4828 sh_error_message(errno, errbuf, sizeof(errbuf)));
4829#endif
4830 SH_FREE(page_list);
4831 page_locking = 0;
4832 goto exit_mlock;
4833 }
4834 page_list->next = sh_page_locked;
4835 sh_page_locked = page_list;
4836 num_pages -= 1;
4837 addr += pagesize;
4838 }
4839 page_locking = 0;
4840
4841 exit_mlock:
4842 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
4843
4844 SL_RETURN((status), _("sh_unix_mlock"));
4845}
4846#else
4847int sh_unix_mlock (const char * file, int line, void * in_addr, size_t len)
4848{
4849 (void) file; (void) line;
4850 (void) in_addr; (void) len;
4851 return -1;
4852}
4853#endif
4854
4855#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4856int sh_unix_munlock (void * in_addr, size_t len)
4857{
4858 int num_pages;
4859 int unlocked;
4860 int status;
4861 int pagesize;
4862 sh_page_l * page_list;
4863 sh_page_l * page_last;
4864 unsigned long addr;
4865
4866 int test_count;
4867 int test_status;
4868 int test_pages;
4869
4870#ifdef TEST_MLOCK
4871 int i = 0;
4872#endif
4873
4874 SL_ENTER(_("sh_unix_munlock"));
4875
4876 /* There's no cancellation point here, except if tracing is on
4877 */
4878 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4879
4880 unlocked = 0;
4881 status = 0;
4882 page_list = sh_page_locked;
4883
4884 if (0 != page_locking)
4885 {
4886 status = -1;
4887 goto exit_munlock;
4888 }
4889 page_locking = 1;
4890
4891 pagesize = sh_unix_pagesize();
4892 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4893
4894#ifdef TEST_MLOCK
4895 fprintf(stderr, "munlock: in_addr %ld, addr %ld, pages: %d, length %d\n",
4896 (unsigned long) in_addr, addr, num_pages, len);
4897#endif
4898
4899 test_pages = num_pages;
4900
4901 /* reduce refcount of locked pages
4902 * addr is first page; num_pages is #(consecutive pages) to lock
4903 */
4904 while ((page_list != NULL) && (num_pages > 0))
4905 {
4906#ifdef TEST_MLOCK
4907 fprintf(stderr, "munlock: page %d: %ld [%d]\n",
4908 i, page_list->page_start, page_list->page_refcount);
4909#endif
4910
4911 test_status = 0;
4912 for (test_count = 0; test_count < test_pages; ++test_count)
4913 {
4914 if (page_list->page_start == (addr + (test_count * pagesize)))
4915 {
4916 test_status = 1;
4917 break;
4918 }
4919 }
4920
4921 if (test_status == 1)
4922 {
4923 page_list->page_refcount -= 1;
4924 if (page_list->page_refcount == 0)
4925 {
4926 status = munlock ( (void *) addr, pagesize);
4927 ++unlocked;
4928 }
4929 num_pages -= 1;
4930#ifdef TEST_MLOCK
4931 fprintf(stderr,
4932 "munlock: page %d: %ld [refcount %d], refcount reduced\n",
4933 i, page_list->page_start, page_list->page_refcount);
4934#endif
4935 }
4936#ifdef TEST_MLOCK
4937 ++i;
4938#endif
4939 page_list = page_list->next;
4940 }
4941
4942#ifdef TEST_MLOCK
4943 i = 0;
4944#endif
4945
4946 if (unlocked > 0)
4947 {
4948 page_list = sh_page_locked;
4949 page_last = sh_page_locked;
4950
4951 while ((page_list != NULL) && (unlocked > 0))
4952 {
4953 if (page_list->page_refcount == 0)
4954 {
4955#ifdef TEST_MLOCK
4956 fprintf(stderr, "munlock: remove page %d: %ld [refcount %d]\n",
4957 i, page_list->page_start, page_list->page_refcount);
4958#endif
4959 if (page_last != page_list)
4960 {
4961 page_last->next = page_list->next;
4962 SH_FREE(page_list);
4963 page_list = page_last->next;
4964 }
4965 else
4966 {
4967 page_last = page_list->next;
4968 if (page_list == sh_page_locked)
4969 sh_page_locked = page_list->next;
4970 SH_FREE(page_list);
4971 page_list = page_last;
4972 }
4973 --unlocked;
4974 }
4975 else
4976 {
4977#ifdef TEST_MLOCK
4978 fprintf(stderr, "munlock: skip page %d: %ld [refcount %d]\n",
4979 i, page_list->page_start, page_list->page_refcount);
4980#endif
4981
4982 page_last = page_list;
4983 page_list = page_list->next;
4984 }
4985#ifdef TEST_MLOCK
4986 ++i;
4987#endif
4988 }
4989 }
4990
4991 page_locking = 0;
4992
4993 exit_munlock:
4994 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
4995 SL_RETURN((status), _("sh_unix_munlock"));
4996}
4997#else
4998int sh_unix_munlock (void * in_addr, size_t len)
4999{
5000 (void) in_addr; (void) len;
5001 return -1;
5002}
5003#endif
5004
5005int sh_unix_count_mlock()
5006{
5007 int i = 0;
5008 char str[32][64];
5009 sh_page_l * page_list;
5010
5011 SL_ENTER(_("sh_unix_count_mlock"));
5012
5013#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
5014 /* There's no cancellation point here, except if tracing is on
5015 */
5016 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
5017#endif
5018
5019 page_list = sh_page_locked;
5020
5021 while (page_list != NULL)
5022 {
5023#ifdef WITH_TPT
5024 if (i < 32)
5025 sl_snprintf(str[i], 64, _("file: %s line: %d page: %d"),
5026 page_list->file, page_list->line, i+1);
5027#endif
5028 page_list = page_list->next;
5029 ++i;
5030 }
5031
5032#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
5033 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
5034#endif
5035
5036#ifdef WITH_TPT
5037 {
5038 int j = 0;
5039 while (j < i && j < 32)
5040 {
5041 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, j, MSG_E_SUBGEN,
5042 str[j], _("sh_unix_count_mlock"));
5043 ++j;
5044 }
5045 }
5046#endif
5047
5048 sl_snprintf(str[0], 64, _("%d pages locked"), i);
5049 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, i, MSG_E_SUBGEN,
5050 str[0], _("sh_unix_count_mlock"));
5051 SL_RETURN((i), _("sh_unix_count_mlock"));
5052}
5053
5054/************************************************/
5055/************************************************/
5056/**** Stealth Utilities ****/
5057/************************************************/
5058/************************************************/
5059#ifdef SH_STEALTH
5060
5061void sh_unix_xor_code (char * str, int len)
5062{
5063 register int i;
5064
5065 for (i = 0; i < len; ++i) str[i] ^= (char) XOR_CODE;
5066 return;
5067}
5068
5069#if !defined(SH_STEALTH_MICRO)
5070
5071
5072int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
5073 unsigned long * bytes_read);
5074unsigned long first_hex_block(SL_TICKET fd, unsigned long * max);
5075
5076/*
5077 * --- Get hidden data from a block of hex data. ---
5078 */
5079int sh_unix_getline_stealth (SL_TICKET fd, char * str, int len)
5080{
5081 int add_off = 0, llen;
5082 static unsigned long off_data = 0;
5083 static unsigned long max_data = 0;
5084 static unsigned long bytes_read = 0;
5085 static int stealth_init = BAD;
5086
5087 SL_ENTER(_("sh_unix_getline_stealth"));
5088
5089 if (str == NULL)
5090 {
5091 off_data = 0;
5092 max_data = 0;
5093 bytes_read = 0;
5094 stealth_init = BAD;
5095 SL_RETURN(0, _("sh_unix_getline_stealth"));
5096 }
5097
5098 /* --- Initialize. ---
5099 */
5100 if (stealth_init == BAD)
5101 {
5102 off_data = first_hex_block(fd, &max_data);
5103 if (off_data == 0)
5104 {
5105 dlog(1, FIL__, __LINE__,
5106 _("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"));
5107 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
5108 _("Stealth config file."));
5109 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
5110 }
5111 stealth_init = GOOD;
5112 max_data += off_data;
5113 }
5114
5115 /* --- Seek to proper position. ---
5116 */
5117 if (bytes_read >= max_data || add_off < 0)
5118 {
5119 dlog(1, FIL__, __LINE__,
5120 _("The capacity of the container image file for the stealth config file seems to be too small. Your config file is likely truncated.\n"));
5121 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
5122 _("Stealth config file."));
5123 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
5124 }
5125 sl_seek(fd, off_data);
5126
5127 /* --- Read one line. ---
5128 */
5129 add_off = hideout_hex_block(fd, (unsigned char *) str, len, &bytes_read);
5130 off_data += add_off;
5131
5132 llen = sl_strlen(str);
5133 SL_RETURN(llen, _("sh_unix_getline_stealth"));
5134}
5135
5136int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
5137 unsigned long * bytes_read)
5138{
5139
5140 register int i, j, k;
5141 unsigned char c, e;
5142 register int num;
5143 unsigned char mask[9] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
5144 unsigned long here = 0;
5145 unsigned long retval = 0;
5146 unsigned long bread = 0;
5147
5148 SL_ENTER(_("hideout_hex_block"));
5149
5150 ASSERT_RET((len > 1), _("len > 1"), (0));
5151
5152 --len;
5153
5154 i = 0;
5155 while (i < len)
5156 {
5157 for (j = 0; j < 8; ++j)
5158 {
5159
5160 /* --- Get a low byte, modify, read back. ---
5161 */
5162 for (k = 0; k < 2; ++k)
5163 {
5164 /* -- Skip whitespace. ---
5165 */
5166 c = ' ';
5167 do {
5168 do {
5169 num = sl_read (fd, &c, 1);
5170 } while (num == 0 && errno == EINTR);
5171 if (num > 0)
5172 ++here;
5173 else if (num == 0)
5174 SL_RETURN((0), _("hideout_hex_block"));
5175 else
5176 SL_RETURN((-1), _("hideout_hex_block"));
5177 } while (c == '\n' || c == '\t' || c == '\r' ||
5178 c == ' ');
5179 }
5180
5181
5182 /* --- e is the value of the low byte. ---
5183 */
5184 e = (unsigned char) sh_util_hexchar( c );
5185 if ((e & mask[7]) != 0) /* bit is set */
5186 str[i] |= mask[j];
5187 else /* bit is not set */
5188 str[i] &= ~mask[j];
5189
5190 bread += 1;
5191 }
5192 if (str[i] == '\n') break;
5193 ++i;
5194 }
5195
5196 if (i != 0)
5197 str[i] = '\0';
5198 else
5199 str[i+1] = '\0'; /* keep newline and terminate */
5200 retval += here;
5201 *bytes_read += (bread/8);
5202
5203 SL_RETURN(retval, _("hideout_hex_block"));
5204}
5205
5206/* --- Get offset of first data block. ---
5207 */
5208unsigned long first_hex_block(SL_TICKET fd, unsigned long * max)
5209{
5210 unsigned int i;
5211 long num = 1;
5212 unsigned long lnum;
5213 char c;
5214 int nothex = 0;
5215 unsigned long retval = 0;
5216 unsigned int this_line = 0;
5217 char theline[SH_BUFSIZE];
5218
5219 SL_ENTER(_("first_hex_block"));
5220
5221 *max = 0;
5222
5223 while (1)
5224 {
5225 theline[0] = '\0';
5226 this_line = 0;
5227 c = '\0';
5228 while (c != '\n' && num > 0 && this_line < (sizeof(theline)-1))
5229 {
5230 do {
5231 num = sl_read (fd, &c, 1);
5232 } while (num == 0 && errno == EINTR);
5233 if (num > 0)
5234 theline[this_line] = c;
5235 else
5236 SL_RETURN((0), _("first_hex_block"));
5237 ++this_line;
5238 }
5239 theline[this_line] = '\0';
5240
5241 /* not only 'newline' */
5242 if (this_line > 60)
5243 {
5244 nothex = 0;
5245 i = 0;
5246 while (nothex == 0 && i < (this_line-1))
5247 {
5248 if (! isxdigit((int)theline[i])) nothex = 1;
5249 ++i;
5250 }
5251 if (nothex == 1) retval += this_line;
5252 }
5253 else
5254 {
5255 nothex = 1;
5256 retval += this_line;
5257 }
5258
5259 if (nothex == 0)
5260 {
5261 *max = 0;
5262 do {
5263 do {
5264 num = sl_read (fd, theline, SH_BUFSIZE);
5265 } while (num == 0 && errno == EINTR);
5266 if (num > 0)
5267 {
5268 lnum = (unsigned long) num;
5269 for (i = 0; i < lnum; ++i)
5270 {
5271 c = theline[i];
5272 if (c == '\n' || c == '\t' || c == '\r' || c == ' ')
5273 ;
5274 else if (!isxdigit((int)c))
5275 break;
5276 else
5277 *max += 1;
5278 }
5279 }
5280 } while (num > 0);
5281
5282 *max /= 16;
5283 SL_RETURN((retval), _("first_hex_block"));
5284 }
5285
5286 }
5287 /* SL_RETURN((0), _("first_hex_block")); *//* unreachable */
5288}
5289
5290 /* if !defined(SH_STEALTH_MICRO) */
5291#endif
5292
5293 /* ifdef SH_STEALTH */
5294#endif
5295
5296/*
5297 * anti-debugger code
5298 */
5299#if defined(SCREW_IT_UP)
5300volatile int sh_not_traced = 0;
5301
5302#ifdef HAVE_GETTIMEOFDAY
5303struct timeval save_tv;
5304#endif
5305
5306void sh_sigtrap_handler (int signum)
5307{
5308#ifdef HAVE_GETTIMEOFDAY
5309 struct timeval tv;
5310 long difftv;
5311
5312 gettimeofday(&tv, NULL);
5313 difftv = (tv.tv_sec - save_tv.tv_sec) * 1000000 +
5314 (tv.tv_usec - save_tv.tv_usec);
5315 if (difftv > 500000)
5316 raise(SIGKILL);
5317#endif
5318 sh_not_traced += signum;
5319 return;
5320}
5321#endif
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