source: trunk/src/sh_unix.c@ 345

Last change on this file since 345 was 343, checked in by katerina, 13 years ago

Fix for ticket #252: cache timeserver response.
File size: 123.4 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_restrict.h"
101#include "sh_ipvx.h"
102#include "sh_tiger.h"
103#include "sh_prelink.h"
104#include "sh_pthread.h"
105
106/* moved here from far below
107 */
108#include <netdb.h>
109
110#define SH_NEED_PWD_GRP
111#define SH_NEED_GETHOSTBYXXX
112#include "sh_static.h"
113
114#ifndef HAVE_LSTAT
115#define lstat stat
116#endif
117
118#if defined(S_IFLNK) && !defined(S_ISLNK)
119#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
120#else
121#if !defined(S_ISLNK)
122#define S_ISLNK(mode) (0)
123#endif
124#endif
125
126#if defined(S_IFSOCK) && !defined(S_ISSOCK)
127#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
128#else
129#if !defined(S_ISSOCK)
130#define S_ISSOCK(mode) (0)
131#endif
132#endif
133
134#if defined(S_IFDOOR) && !defined(S_ISDOOR)
135#define S_ISDOOR(mode) (((mode) & S_IFMT) == S_IFDOOR)
136#else
137#if !defined(S_ISDOOR)
138#define S_ISDOOR(mode) (0)
139#endif
140#endif
141
142#if defined(S_IFPORT) && !defined(S_ISPORT)
143#define S_ISPORT(mode) (((mode) & S_IFMT) == S_IFPORT)
144#else
145#if !defined(S_ISPORT)
146#define S_ISPORT(mode) (0)
147#endif
148#endif
149
150#define SH_KEY_NULL _("000000000000000000000000000000000000000000000000")
151
152#undef FIL__
153#define FIL__ _("sh_unix.c")
154
155unsigned long mask_PRELINK = MASK_PRELINK_;
156unsigned long mask_USER0 = MASK_USER_;
157unsigned long mask_USER1 = MASK_USER_;
158unsigned long mask_USER2 = MASK_USER_;
159unsigned long mask_USER3 = MASK_USER_;
160unsigned long mask_USER4 = MASK_USER_;
161unsigned long mask_ALLIGNORE = MASK_ALLIGNORE_;
162unsigned long mask_ATTRIBUTES = MASK_ATTRIBUTES_;
163unsigned long mask_LOGFILES = MASK_LOGFILES_;
164unsigned long mask_LOGGROW = MASK_LOGGROW_;
165unsigned long mask_READONLY = MASK_READONLY_;
166unsigned long mask_NOIGNORE = MASK_NOIGNORE_;
167
168
169extern char **environ;
170
171int sh_unix_maskreset()
172{
173 mask_PRELINK = MASK_PRELINK_;
174 mask_USER0 = MASK_USER_;
175 mask_USER1 = MASK_USER_;
176 mask_USER2 = MASK_USER_;
177 mask_USER3 = MASK_USER_;
178 mask_USER4 = MASK_USER_;
179 mask_ALLIGNORE = MASK_ALLIGNORE_;
180 mask_ATTRIBUTES = MASK_ATTRIBUTES_;
181 mask_LOGFILES = MASK_LOGFILES_;
182 mask_LOGGROW = MASK_LOGGROW_;
183 mask_READONLY = MASK_READONLY_;
184 mask_NOIGNORE = MASK_NOIGNORE_;
185 return 0;
186}
187
188
189#ifdef SYS_SIGLIST_DECLARED
190/* extern const char * const sys_siglist[]; */
191#else
192char * sh_unix_siglist (int signum)
193{
194 switch (signum)
195 {
196#ifdef SIGHUP
197 case SIGHUP:
198 return _("Hangup");
199#endif
200#ifdef SIGINT
201 case SIGINT:
202 return _("Interrupt");
203#endif
204#ifdef SIGQUIT
205 case SIGQUIT:
206 return _("Quit");
207#endif
208#ifdef SIGILL
209 case SIGILL:
210 return _("Illegal instruction");
211#endif
212#ifdef SIGTRAP
213 case SIGTRAP:
214 return _("Trace/breakpoint trap");
215#endif
216#ifdef SIGABRT
217 case SIGABRT:
218 return _("IOT trap/Abort");
219#endif
220#ifdef SIGBUS
221 case SIGBUS:
222 return _("Bus error");
223#endif
224#ifdef SIGFPE
225 case SIGFPE:
226 return _("Floating point exception");
227#endif
228#ifdef SIGUSR1
229 case SIGUSR1:
230 return _("User defined signal 1");
231#endif
232#ifdef SIGSEGV
233 case SIGSEGV:
234 return _("Segmentation fault");
235#endif
236#ifdef SIGUSR2
237 case SIGUSR2:
238 return _("User defined signal 2");
239#endif
240#ifdef SIGPIPE
241 case SIGPIPE:
242 return _("Broken pipe");
243#endif
244#ifdef SIGALRM
245 case SIGALRM:
246 return _("Alarm clock");
247#endif
248#ifdef SIGTERM
249 case SIGTERM:
250 return _("Terminated");
251#endif
252#ifdef SIGSTKFLT
253 case SIGSTKFLT:
254 return _("Stack fault");
255#endif
256#ifdef SIGCHLD
257 case SIGCHLD:
258 return _("Child exited");
259#endif
260#ifdef SIGCONT
261 case SIGCONT:
262 return _("Continued");
263#endif
264#ifdef SIGSTOP
265 case SIGSTOP:
266 return _("Stopped");
267#endif
268#ifdef SIGTSTP
269 case SIGTSTP:
270 return _("Stop typed at tty");
271#endif
272#ifdef SIGTTIN
273 case SIGTTIN:
274 return _("Stopped (tty input)");
275#endif
276#ifdef SIGTTOU
277 case SIGTTOU:
278 return _("Stopped (tty output)");
279#endif
280#ifdef SIGURG
281 case SIGURG:
282 return _("Urgent condition");
283#endif
284#ifdef SIGXCPU
285 case SIGXCPU:
286 return _("CPU time limit exceeded");
287#endif
288#ifdef SIGXFSZ
289 case SIGXFSZ:
290 return _("File size limit exceeded");
291#endif
292#ifdef SIGVTALRM
293 case SIGVTALRM:
294 return _("Virtual time alarm");
295#endif
296#ifdef SIGPROF
297 case SIGPROF:
298 return _("Profile signal");
299#endif
300#ifdef SIGWINCH
301 case SIGWINCH:
302 return _("Window size changed");
303#endif
304#ifdef SIGIO
305 case SIGIO:
306 return _("Possible I/O");
307#endif
308#ifdef SIGPWR
309 case SIGPWR:
310 return _("Power failure");
311#endif
312#ifdef SIGUNUSED
313 case SIGUNUSED:
314 return _("Unused signal");
315#endif
316 }
317 return _("Unknown");
318}
319#endif
320
321
322/* Log from within a signal handler without using any
323 * functions that are not async signal safe.
324 *
325 * This is the safe_itoa helper function.
326 */
327char * safe_itoa(int i, char * str, int size)
328{
329 unsigned int u;
330 int iisneg = 0;
331 char *p = &str[size-1];
332
333 *p = '\0';
334 if (i < 0) {
335 iisneg = 1;
336 u = ((unsigned int)(-(1+i))) + 1;
337 } else {
338 u = i;
339 }
340 do {
341 --p;
342 *p = '0' + (u % 10);
343 u /= 10;
344 } while (u && (p != str));
345 if ((iisneg == 1) && (p != str)) {
346 --p;
347 *p = '-';
348 }
349 return p;
350}
351
352/* Log from within a signal handler without using any
353 * functions that are not async signal safe.
354 *
355 * This is the safe_logger function.
356 * Arguments: signal (signal number), method (0=logger, 1=stderr), thepid (pid)
357 */
358extern int OnlyStderr;
359
360int safe_logger (int thesignal, int method, char * details)
361{
362 unsigned int i = 0;
363 int status = -1;
364 struct stat buf;
365 pid_t newpid;
366 char str[128];
367 char * p;
368
369 char l0[64], l1[64], l2[64], l3[64];
370 char a0[32], a1[32], a2[32];
371 char e0[128];
372 char msg[128];
373
374 char * locations[] = { NULL, NULL, NULL, NULL, NULL };
375 char * envp[] = { NULL, NULL };
376 char * argp[] = { NULL, NULL, NULL, NULL, NULL };
377
378 pid_t thepid = getpid();
379
380 if ((sh.flag.isdaemon == S_FALSE) || (OnlyStderr == S_TRUE))
381 method = 1;
382
383 /* seems that solaris cc needs this way of initializing ...
384 */
385 locations[0] = l0;
386 locations[1] = l1;
387 locations[2] = l2;
388 locations[3] = l3;
389
390 envp[0] = e0;
391
392 argp[0] = a0;
393 argp[1] = a1;
394 argp[2] = a2;
395
396 sl_strlcpy(msg, _("samhain["), 128);
397 p = safe_itoa((int) thepid, str, 128);
398 if (p && *p)
399 sl_strlcat(msg, p, 128);
400 if (thesignal == 0)
401 {
402 if (details == NULL) {
403 sl_strlcat(msg, _("]: out of memory"), 128);
404 } else {
405 sl_strlcat(msg, _("]: "), 128);
406 sl_strlcat(msg, details, 128);
407 }
408 }
409 else
410 {
411 sl_strlcat(msg, _("]: exit on signal "), 128);
412 p = safe_itoa(thesignal, str, 128);
413 if (p && *p)
414 sl_strlcat(msg, p, 128);
415 }
416
417 if (method == 1) {
418#ifndef STDERR_FILENO
419#define STDERR_FILENO 2
420#endif
421 int retval = 0;
422 do {
423 retval = write(STDERR_FILENO, msg, strlen(msg));
424 } while (retval < 0 && errno == EINTR);
425 do {
426 retval = write(STDERR_FILENO, "\n", 1);
427 } while (retval < 0 && errno == EINTR);
428 return 0;
429 }
430
431 sl_strlcpy (l0, _("/usr/bin/logger"), 64);
432 sl_strlcpy (l1, _("/usr/sbin/logger"), 64);
433 sl_strlcpy (l2, _("/usr/ucb/logger"), 64);
434 sl_strlcpy (l3, _("/bin/logger"), 64);
435
436 sl_strlcpy (a0, _("logger"), 32);
437 sl_strlcpy (a1, _("-p"), 32);
438 sl_strlcpy (a2, _("daemon.alert"), 32);
439
440 sl_strlcpy (e0,
441 _("PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/ucb:/usr/local/bin"),
442 128);
443
444 while (locations[i] != NULL) {
445 status = stat(locations[i], &buf);
446 if (status == 0)
447 break;
448 ++i;
449 }
450
451 if (locations[i] != NULL) {
452 argp[3] = msg;
453 newpid = fork();
454 if (newpid == 0) {
455 execve(locations[i], argp, envp);
456 _exit(1);
457 }
458 else if (newpid > 0) {
459 waitpid(newpid, &status, WUNTRACED);
460 }
461 }
462 return 0;
463}
464
465void safe_fatal (const char * details,
466 const char * file, int line)
467{
468 char msg[128];
469 char str[128];
470 char * p;
471 int thesignal = 0;
472 int method = 0;
473
474 p = safe_itoa((int) line, str, 128);
475 sl_strlcpy(msg, _("FATAL: "), 128);
476 sl_strlcat(msg, file, 128);
477 sl_strlcat(msg, ": ", 128);
478 if (p && (*p)) {
479 sl_strlcat(msg, p , 128);
480 sl_strlcat(msg, ": ", 128);
481 }
482 sl_strlcat(msg, details, 128);
483 (void) safe_logger (thesignal, method, msg);
484 raise(SIGKILL);
485}
486
487extern char sh_sig_msg[64];
488
489volatile int immediate_exit_normal = 0;
490
491#if defined(SA_SIGACTION_WORKS)
492static
493void sh_unix_sigexit (int mysignal, siginfo_t * signal_info, void * signal_add)
494#else
495static
496void sh_unix_sigexit (int mysignal)
497#endif
498{
499
500#if defined(SA_SIGACTION_WORKS)
501 if (signal_info != NULL && signal_info->si_code == SI_USER &&
502 mysignal != SIGTERM && mysignal != SIGINT)
503 {
504 return;
505 }
506
507 /* avoid compiler warning (unused var)
508 */
509 (void) signal_add;
510#endif
511
512 /*
513 * Block re-entry
514 */
515 if (immediate_exit_normal > 0)
516 {
517 ++immediate_exit_normal;
518 if ((skey != NULL) && (immediate_exit_normal == 2))
519 memset (skey, '\0', sizeof(sh_key_t));
520 if (immediate_exit_normal == 2)
521 {
522 int val_return;
523
524 do {
525 val_return = chdir ("/");
526 } while (val_return < 0 && errno == EINTR);
527
528 safe_logger (mysignal, 0, NULL);
529 }
530 raise(SIGKILL);
531 }
532 else
533 {
534 immediate_exit_normal = 1;
535 }
536
537#ifdef SYS_SIGLIST_DECLARED
538 strncpy (sh_sig_msg, sys_siglist[mysignal], 40);
539#else
540 strncpy (sh_sig_msg, sh_unix_siglist(mysignal), 40);
541#endif
542 sh_sig_msg[63] = '\0';
543
544 ++sig_raised;
545 ++sig_urgent;
546 sig_termfast = 1;
547 return;
548}
549
550volatile int immediate_exit_fast = 0;
551
552#if defined(SA_SIGACTION_WORKS)
553static
554void sh_unix_sigexit_fast (int mysignal, siginfo_t * signal_info,
555 void * signal_add)
556#else
557static
558void sh_unix_sigexit_fast (int mysignal)
559#endif
560{
561#if defined(SL_DEBUG) && (defined(USE_SYSTEM_MALLOC) || !defined(USE_MALLOC_LOCK))
562 int retval;
563#endif
564
565#if defined(SA_SIGACTION_WORKS)
566 if (signal_info != NULL && signal_info->si_code == SI_USER)
567 {
568 return;
569 }
570#endif
571
572 /* avoid compiler warning (unused var)
573 */
574#if defined(SA_SIGACTION_WORKS)
575 (void) signal_add;
576#endif
577
578 /* Check whether the heap is ok; otherwise _exit
579 */
580#if !defined(SL_DEBUG) || (!defined(USE_SYSTEM_MALLOC) && defined(USE_MALLOC_LOCK))
581 ++immediate_exit_fast;
582 if (skey != NULL && immediate_exit_fast < 2)
583 memset (skey, '\0', sizeof(sh_key_t));
584 if (immediate_exit_fast < 2)
585 safe_logger (mysignal, 0, NULL);
586 raise(SIGKILL);
587#else
588
589 /* debug code
590 */
591 if (immediate_exit_fast == 1)
592 {
593 ++immediate_exit_fast;
594 if (skey != NULL)
595 memset (skey, '\0', sizeof(sh_key_t));
596#ifdef WITH_MESSAGE_QUEUE
597 close_ipc ();
598#endif
599 safe_logger (mysignal, 0, NULL);
600 do {
601 retval = chdir ("/");
602 } while (retval < 0 && errno == EINTR);
603 raise(SIGFPE);
604 }
605 else if (immediate_exit_fast == 2)
606 {
607 do {
608 retval = chdir ("/");
609 } while (retval < 0 && errno == EINTR);
610 raise(SIGFPE);
611 }
612 else if (immediate_exit_fast != 0)
613 {
614 raise(SIGKILL);
615 }
616
617 ++immediate_exit_fast;
618
619 /* The FPE|BUS|SEGV|ILL signals leave the system in an undefined
620 * state, thus it is best to exit immediately.
621 */
622#ifdef SYS_SIGLIST_DECLARED
623 strncpy (sh_sig_msg, sys_siglist[mysignal], 40);
624#else
625 strncpy (sh_sig_msg, sh_unix_siglist(mysignal), 40);
626#endif
627 sh_sig_msg[63] = '\0';
628
629 sl_stack_print();
630
631 /* Try to push out an error message.
632 */
633 sh_error_handle ((-1), FIL__, __LINE__, mysignal, MSG_EXIT_NORMAL,
634 sh.prg_name, sh_sig_msg);
635
636 if (skey != NULL)
637 memset (skey, '\0', sizeof(sh_key_t));
638#ifdef WITH_MESSAGE_QUEUE
639 close_ipc ();
640#endif
641
642 do {
643 retval = chdir ("/");
644 } while (retval < 0 && errno == EINTR);
645
646 raise(SIGFPE);
647#endif
648}
649
650
651static
652void sh_unix_sigaction (int mysignal)
653{
654 ++sig_raised;
655#ifdef SIGUSR1
656 if (mysignal == SIGUSR1)
657 sig_debug_switch = 1;
658#endif
659#ifdef SIGUSR2
660 if (mysignal == SIGUSR2)
661 {
662 ++sig_suspend_switch;
663 ++sig_urgent;
664 }
665#endif
666#ifdef SIGHUP
667 if (mysignal == SIGHUP)
668 sig_config_read_again = 1;
669#endif
670#ifdef SIGTTOU
671 if (mysignal == SIGTTOU)
672 sig_force_check = 1;
673#endif
674#ifdef SIGTTIN
675 if (mysignal == SIGTTIN)
676 sig_fresh_trail = 1;
677#endif
678#ifdef SIGABRT
679 if (mysignal == SIGABRT)
680 sig_fresh_trail = 1;
681#endif
682#ifdef SIGQUIT
683 if (mysignal == SIGQUIT)
684 {
685 sig_terminate = 1;
686 ++sig_urgent;
687 }
688#endif
689#ifdef SIGTERM
690 if (mysignal == SIGTERM)
691 {
692 strncpy (sh_sig_msg, _("Terminated"), 40);
693 sig_termfast = 1;
694 ++sig_urgent;
695 }
696#endif
697
698 return;
699}
700
701static
702void sh_unix_siginstall (int goDaemon)
703{
704 struct sigaction act, act_fast, act2, oldact, ignact;
705#if defined (SH_WITH_SERVER)
706 (void) goDaemon;
707#endif
708
709 SL_ENTER(_("sh_unix_siginstall"));
710
711 ignact.sa_handler = SIG_IGN; /* signal action */
712 sigemptyset( &ignact.sa_mask ); /* set an empty mask */
713 ignact.sa_flags = 0; /* init sa_flags */
714
715#if defined(SA_SIGACTION_WORKS)
716 act.sa_sigaction = &sh_unix_sigexit; /* signal action */
717#else
718 act.sa_handler = &sh_unix_sigexit; /* signal action */
719#endif
720
721 sigfillset ( &act.sa_mask ); /* set a full mask */
722
723
724 /* Block all but deadly signals.
725 */
726#ifdef SIGILL
727 sigdelset ( &act.sa_mask, SIGILL );
728#endif
729#ifndef SL_DEBUG
730#ifdef SIGFPE
731 sigdelset ( &act.sa_mask, SIGFPE );
732#endif
733#endif
734#ifdef SIGSEGV
735 sigdelset ( &act.sa_mask, SIGSEGV );
736#endif
737#ifdef SIGBUS
738 sigdelset ( &act.sa_mask, SIGBUS );
739#endif
740
741#if defined(SA_SIGACTION_WORKS)
742 act_fast.sa_sigaction = &sh_unix_sigexit_fast; /* signal action */
743#else
744 act_fast.sa_handler = &sh_unix_sigexit_fast; /* signal action */
745#endif
746
747 sigfillset ( &act_fast.sa_mask ); /* set a full mask */
748
749#ifdef SIGILL
750 sigdelset ( &act_fast.sa_mask, SIGILL );
751#endif
752#ifndef SL_DEBUG
753#ifdef SIGFPE
754 sigdelset ( &act_fast.sa_mask, SIGFPE );
755#endif
756#endif
757#ifdef SIGSEGV
758 sigdelset ( &act_fast.sa_mask, SIGSEGV );
759#endif
760#ifdef SIGBUS
761 sigdelset ( &act_fast.sa_mask, SIGBUS );
762#endif
763
764
765 /* Use siginfo to verify origin of signal, if possible.
766 */
767#if defined(SA_SIGACTION_WORKS)
768 act.sa_flags = SA_SIGINFO;
769 act_fast.sa_flags = SA_SIGINFO;
770#else
771 act.sa_flags = 0;
772 act_fast.sa_flags = 0;
773#endif
774
775 /* Do not block the signal from being received in its handler ...
776 * (is this a good or a bad idea ??).
777 */
778#if defined(SA_NOMASK)
779 act_fast.sa_flags |= SA_NOMASK;
780#elif defined(SA_NODEFER)
781 act_fast.sa_flags |= SA_NODEFER;
782#endif
783
784
785 act2.sa_handler = &sh_unix_sigaction; /* signal action */
786 sigemptyset( &act2.sa_mask ); /* set an empty mask */
787 act2.sa_flags = 0; /* init sa_flags */
788
789 /* signals to control the daemon */
790
791#ifdef SIGHUP
792 retry_sigaction(FIL__, __LINE__, SIGHUP, &act2, &oldact);
793#endif
794#ifdef SIGABRT
795 retry_sigaction(FIL__, __LINE__, SIGABRT, &act2, &oldact);
796#endif
797#ifdef SIGUSR1
798 retry_sigaction(FIL__, __LINE__, SIGUSR1, &act2, &oldact);
799#endif
800#ifdef SIGUSR2
801 retry_sigaction(FIL__, __LINE__, SIGUSR2, &act2, &oldact);
802#endif
803#ifdef SIGQUIT
804 retry_sigaction(FIL__, __LINE__, SIGQUIT, &act2, &oldact);
805#endif
806#ifdef SIGTERM
807 retry_sigaction(FIL__, __LINE__, SIGTERM, &act, &oldact);
808#endif
809
810 /* fatal signals that may cause termination */
811
812#ifdef SIGILL
813 retry_sigaction(FIL__, __LINE__, SIGILL, &act_fast, &oldact);
814#endif
815#ifndef SL_DEBUG
816#ifdef SIGFPE
817 retry_sigaction(FIL__, __LINE__, SIGFPE, &act_fast, &oldact);
818#endif
819#endif
820#ifdef SIGSEGV
821 retry_sigaction(FIL__, __LINE__, SIGSEGV, &act_fast, &oldact);
822#endif
823#ifdef SIGBUS
824 retry_sigaction(FIL__, __LINE__, SIGBUS, &act_fast, &oldact);
825#endif
826
827 /* other signals */
828
829#ifdef SIGINT
830 retry_sigaction(FIL__, __LINE__, SIGINT, &act, &oldact);
831#endif
832#ifdef SIGPIPE
833#ifdef HAVE_PTHREAD
834 retry_sigaction(FIL__, __LINE__, SIGPIPE, &ignact, &oldact);
835#else
836 retry_sigaction(FIL__, __LINE__, SIGPIPE, &act, &oldact);
837#endif
838#endif
839#ifdef SIGALRM
840 retry_sigaction(FIL__, __LINE__, SIGALRM, &ignact, &oldact);
841#endif
842#ifdef SIGTSTP
843 retry_sigaction(FIL__, __LINE__, SIGTSTP, &ignact, &oldact);
844#endif
845
846#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
847#ifdef SIGTTOU
848 if (goDaemon == 1)
849 retry_sigaction(FIL__, __LINE__, SIGTTOU, &act2, &oldact);
850 else
851 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
852#endif
853#ifdef SIGTTIN
854 if (goDaemon == 1)
855 retry_sigaction(FIL__, __LINE__, SIGTTIN, &act2, &oldact);
856 else
857 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
858#endif
859#else
860#ifdef SIGTTOU
861 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
862#endif
863#ifdef SIGTTIN
864 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
865#endif
866#endif
867
868#ifdef SIGTRAP
869#if !defined(SCREW_IT_UP)
870 retry_sigaction(FIL__, __LINE__, SIGTRAP, &act, &oldact);
871#endif
872#endif
873
874#ifdef SIGPOLL
875 retry_sigaction(FIL__, __LINE__, SIGPOLL, &ignact, &oldact);
876#endif
877#if defined(SIGPROF) && !defined(SH_PROFILE)
878 retry_sigaction(FIL__, __LINE__, SIGPROF, &ignact, &oldact);
879#endif
880#ifdef SIGSYS
881 retry_sigaction(FIL__, __LINE__, SIGSYS, &act, &oldact);
882#endif
883#ifdef SIGURG
884 retry_sigaction(FIL__, __LINE__, SIGURG, &ignact, &oldact);
885#endif
886#if defined(SIGVTALRM) && !defined(SH_PROFILE)
887 retry_sigaction(FIL__, __LINE__, SIGVTALRM, &ignact, &oldact);
888#endif
889#ifdef SIGXCPU
890 retry_sigaction(FIL__, __LINE__, SIGXCPU, &act, &oldact);
891#endif
892#ifdef SIGXFSZ
893 retry_sigaction(FIL__, __LINE__, SIGXFSZ, &act, &oldact);
894#endif
895
896#ifdef SIGEMT
897 retry_sigaction(FIL__, __LINE__, SIGEMT, &ignact, &oldact);
898#endif
899#ifdef SIGSTKFLT
900 retry_sigaction(FIL__, __LINE__, SIGSTKFLT, &act, &oldact);
901#endif
902#ifdef SIGIO
903 retry_sigaction(FIL__, __LINE__, SIGIO, &ignact, &oldact);
904#endif
905#ifdef SIGPWR
906 retry_sigaction(FIL__, __LINE__, SIGPWR, &act, &oldact);
907#endif
908
909#ifdef SIGLOST
910 retry_sigaction(FIL__, __LINE__, SIGLOST, &ignact, &oldact);
911#endif
912#ifdef SIGUNUSED
913 retry_sigaction(FIL__, __LINE__, SIGUNUSED, &ignact, &oldact);
914#endif
915
916 SL_RET0(_("sh_unix_siginstall"));
917}
918
919/* ---------------------------------------------------------------- */
920
921/* checksum the own binary
922 */
923int sh_unix_self_hash (const char * c)
924{
925 char message[512];
926 char hashbuf[KEYBUF_SIZE];
927
928 SL_ENTER(_("sh_unix_self_hash"));
929
930 if (c == NULL)
931 {
932 sh.exec.path[0] = '\0';
933 SL_RETURN((0), _("sh_unix_self_hash"));
934 }
935 sl_strlcpy(sh.exec.path, c, SH_PATHBUF);
936
937 sl_strlcpy(sh.exec.hash,
938 sh_tiger_hash (c, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
939 KEY_LEN+1);
940 sl_snprintf(message, 512, _("%s has checksum: %s"),
941 sh.exec.path, sh.exec.hash);
942 message[511] = '\0';
943 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
944 message, _("sh_unix_self_hash"));
945 if (0 == sl_strcmp(sh.exec.hash, SH_KEY_NULL ))
946 {
947 dlog(1, FIL__, __LINE__,
948 _("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"),
949 sh.exec.path, sl_get_errmsg(), (int) sl_ret_euid());
950 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_NOACCESS,
951 (long) sh.real.uid, c);
952 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
953 }
954 SL_RETURN((0), _("sh_unix_self_hash"));
955}
956
957int sh_unix_self_check ()
958{
959 char newhash[KEY_LEN+1];
960 char message[512];
961 char hashbuf[KEYBUF_SIZE];
962
963 SL_ENTER(_("sh_unix_self_check"));
964 if (sh.exec.path == NULL || sh.exec.path[0] == '\0')
965 SL_RETURN((0), _("sh_unix_self_check"));
966
967 sl_strlcpy(newhash,
968 sh_tiger_hash (sh.exec.path, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
969 KEY_LEN+1);
970 if (0 == sl_strncmp(sh.exec.hash,
971 newhash,
972 KEY_LEN))
973 SL_RETURN((0), _("sh_unix_self_check"));
974
975
976 dlog(1, FIL__, __LINE__,
977 _("The checksum of the executable: %s has changed since startup (%s -> %s).\n"),
978 sh.exec.path, sh.exec.hash, newhash);
979
980 sl_snprintf(message, 512,
981 _("The checksum of %s has changed since startup (%s -> %s)"),
982 sh.exec.path, sh.exec.hash, newhash);
983 message[511] = '\0';
984
985 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
986 message, _("sh_unix_self_check"));
987 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_E_AUTH,
988 sh.exec.path);
989 SL_RETURN((-1), _("sh_unix_self_check"));
990}
991
992
993/* ---------------------------------------------------------------- */
994
995
996/* added Tue Feb 22 10:36:44 NFT 2000 Rainer Wichmann */
997static int tf_add_trusted_user_int(const char * c)
998{
999 struct passwd * w;
1000 int count;
1001 uid_t pwid = (uid_t)-1;
1002
1003#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1004 struct passwd pwd;
1005 char * buffer;
1006#endif
1007
1008 SL_ENTER(_("tf_add_trusted_user_int"));
1009
1010 /* First check for a user name.
1011 */
1012#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1013 buffer = SH_ALLOC(SH_PWBUF_SIZE);
1014 sh_getpwnam_r(c, &pwd, buffer, SH_PWBUF_SIZE, &w);
1015#else
1016 w = sh_getpwnam(c);
1017#endif
1018
1019 if ((w != NULL) && ((pwid = w->pw_uid) > 0))
1020 goto succe;
1021
1022 /* Failed, so check for a numerical value.
1023 */
1024 pwid = strtol(c, (char **)NULL, 10);
1025 if (pwid > 0 && pwid < 65535)
1026 goto succe;
1027
1028 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1029 _("add trusted user"), c);
1030#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1031 SH_FREE(buffer);
1032#endif
1033 SL_RETURN((-1), _("tf_add_trusted_user_int"));
1034
1035 succe:
1036 count = sl_trust_add_user(pwid);
1037#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1038 SH_FREE(buffer);
1039#endif
1040 SL_RETURN((count), _("tf_add_trusted_user_int"));
1041}
1042
1043int tf_add_trusted_user(const char * c)
1044{
1045 int i;
1046 char * q;
1047 char * p = sh_util_strdup (c);
1048#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1049 char * saveptr;
1050#endif
1051
1052 SL_ENTER(_("tf_add_trusted_user"));
1053
1054#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1055 q = strtok_r(p, ", \t", &saveptr);
1056#else
1057 q = strtok(p, ", \t");
1058#endif
1059 if (!q)
1060 {
1061 SH_FREE(p);
1062 SL_RETURN((-1), _("tf_add_trusted_user"));
1063 }
1064 while (q)
1065 {
1066 i = tf_add_trusted_user_int(q);
1067 if (SL_ISERROR(i))
1068 {
1069 SH_FREE(p);
1070 SL_RETURN((i), _("tf_add_trusted_user"));
1071 }
1072#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1073 q = strtok_r(NULL, ", \t", &saveptr);
1074#else
1075 q = strtok(NULL, ", \t");
1076#endif
1077 }
1078 SH_FREE(p);
1079 SL_RETURN((0), _("tf_add_trusted_user"));
1080}
1081
1082extern uid_t sl_trust_baduid(void);
1083extern gid_t sl_trust_badgid(void);
1084
1085#if defined(HOST_IS_CYGWIN) || defined(__cygwin__) || defined(__CYGWIN32__) || defined(__CYGWIN__)
1086int tf_trust_check (const char * file, int mode)
1087{
1088 (void) file;
1089 (void) mode;
1090 return 0;
1091}
1092#else
1093int tf_trust_check (const char * file, int mode)
1094{
1095 char * tmp;
1096 char * tmp2;
1097 char * p;
1098 int status;
1099 int level;
1100 uid_t ff_euid;
1101
1102 SL_ENTER(_("tf_trust_check"));
1103
1104 if (mode == SL_YESPRIV)
1105 sl_get_euid(&ff_euid);
1106 else
1107 sl_get_ruid(&ff_euid);
1108
1109#if defined(SH_WITH_SERVER)
1110 if (0 == sl_ret_euid()) /* privileges not dropped yet */
1111 {
1112#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1113 struct passwd pwd;
1114 char * buffer = SH_ALLOC(SH_PWBUF_SIZE);
1115 struct passwd * tempres;
1116 sh_getpwnam_r(DEFAULT_IDENT, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
1117#else
1118 struct passwd * tempres = sh_getpwnam(DEFAULT_IDENT);
1119#endif
1120
1121 if (!tempres)
1122 {
1123 dlog(1, FIL__, __LINE__,
1124 _("User %s does not exist. Please add the user to your system.\n"),
1125 DEFAULT_IDENT);
1126 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
1127 }
1128 ff_euid = tempres->pw_uid;
1129#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1130 SH_FREE(buffer);
1131#endif
1132 }
1133#endif
1134
1135 status = sl_trustfile_euid(file, ff_euid);
1136
1137 if ( SL_ENONE != status)
1138 {
1139 if (status == SL_ESTAT)
1140 level = SH_ERR_ALL;
1141 else
1142 level = SH_ERR_ERR;
1143
1144 tmp = sh_util_safe_name (file);
1145 p = sl_trust_errfile();
1146 if (p && *p != '\0')
1147 {
1148 tmp2 = sh_util_safe_name (sl_trust_errfile());
1149 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST2,
1150 sl_error_string(status), tmp, tmp2);
1151 SH_FREE(tmp2);
1152 }
1153 else
1154 {
1155 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST1,
1156 sl_error_string(status), tmp);
1157 }
1158 SH_FREE(tmp);
1159
1160 if (status == SL_EBADUID || status == SL_EBADGID ||
1161 status == SL_EBADOTH || status == SL_ETRUNC ||
1162 status == SL_EINTERNAL )
1163 {
1164 switch (status) {
1165 case SL_EINTERNAL:
1166 dlog(1, FIL__, __LINE__,
1167 _("An internal error occured in the trustfile function.\n"));
1168 break;
1169 case SL_ETRUNC:
1170 tmp = sh_util_safe_name (file);
1171 dlog(1, FIL__, __LINE__,
1172 _("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"),
1173 tmp);
1174 SH_FREE(tmp);
1175 break;
1176 case SL_EBADOTH:
1177 tmp = sh_util_safe_name (file);
1178 p = sl_trust_errfile();
1179 dlog(1, FIL__, __LINE__,
1180 _("The path element: %s\nin the filename: %s is world writeable.\n"),
1181 p, tmp);
1182 SH_FREE(tmp);
1183 break;
1184 case SL_EBADUID:
1185 tmp = sh_util_safe_name (file);
1186 p = sl_trust_errfile();
1187 dlog(1, FIL__, __LINE__,
1188 _("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"),
1189 (UID_CAST)sl_trust_baduid(), p, tmp);
1190 SH_FREE(tmp);
1191 break;
1192 case SL_EBADGID:
1193 tmp = sh_util_safe_name (file);
1194 p = sl_trust_errfile();
1195 dlog(1, FIL__, __LINE__,
1196 _("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"),
1197 p, tmp, (UID_CAST)sl_trust_badgid(),
1198 (UID_CAST)sl_trust_baduid());
1199 SH_FREE(tmp);
1200 break;
1201 default:
1202 break;
1203 }
1204
1205 SL_RETURN((-1), _("tf_trust_check"));
1206 }
1207 }
1208
1209 SL_RETURN((0), _("tf_trust_check"));
1210}
1211#endif
1212
1213#ifdef HAVE_INITGROUPS
1214#ifdef HOST_IS_OSF
1215int sh_unix_initgroups ( char * in_user, gid_t in_gid)
1216#else
1217int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1218#endif
1219{
1220 int status = -1;
1221 status = sh_initgroups (in_user, in_gid);
1222 if (status < 0)
1223 {
1224 if (errno == EPERM)
1225 return 0;
1226 if (errno == EINVAL)
1227 return 0;
1228 return -1;
1229 }
1230 return 0;
1231}
1232#else
1233int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1234{
1235 (void) in_user;
1236 (void) in_gid;
1237 return 0;
1238}
1239#endif
1240
1241#ifdef HAVE_INITGROUPS
1242char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len);
1243int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1244{
1245 int status = -1;
1246 char user[SH_MINIBUF];
1247
1248 SL_ENTER(_("sh_unix_initgroups2"));
1249
1250 if (NULL == sh_unix_getUIDname (SH_ERR_ERR, in_pid, user, sizeof(user)))
1251 SL_RETURN((-1), _("sh_unix_initgroups2"));
1252 status = sh_initgroups (user, in_gid);
1253 if (status < 0)
1254 {
1255 if (errno == EPERM)
1256 status = 0;
1257 if (errno == EINVAL)
1258 status = 0;
1259 }
1260 SL_RETURN((status), _("sh_unix_initgroups2"));
1261}
1262#else
1263int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1264{
1265 (void) in_pid;
1266 (void) in_gid;
1267 return 0;
1268}
1269#endif
1270
1271void sh_unix_closeall (int fd, int except, int inchild)
1272{
1273 int fdx = fd;
1274#ifdef _SC_OPEN_MAX
1275 int fdlimit = sysconf (_SC_OPEN_MAX);
1276#else
1277#ifdef OPEN_MAX
1278 int fdlimit = OPEN_MAX;
1279#else
1280 int fdlimit = _POSIX_OPEN_MAX;
1281#endif
1282#endif
1283
1284 SL_ENTER(_("sh_unix_closeall"));
1285
1286 /* can't happen - so fix it :-(
1287 */
1288 if (fdlimit < 0)
1289 fdlimit = 20; /* POSIX lower limit */
1290
1291 if (fdlimit > 65536)
1292 fdlimit = 65536;
1293
1294 if (!inchild)
1295 sl_dropall (fdx, except);
1296 else
1297 sl_dropall_dirty (fdx, except);
1298
1299 /* Close everything from fd (inclusive) up to fdlimit (exclusive).
1300 */
1301 while (fd < fdlimit)
1302 {
1303 if (fd == except)
1304 fd++;
1305 else if (slib_do_trace != 0 && fd == slib_trace_fd)
1306 fd++;
1307 else
1308 sl_close_fd(FIL__, __LINE__, fd++);
1309 }
1310
1311 SL_RET0(_("sh_unix_closeall"));
1312}
1313
1314static void sh_unix_setlimits(void)
1315{
1316 struct rlimit limits;
1317
1318 SL_ENTER(_("sh_unix_setlimits"));
1319
1320 limits.rlim_cur = RLIM_INFINITY;
1321 limits.rlim_max = RLIM_INFINITY;
1322
1323#ifdef RLIMIT_CPU
1324 setrlimit (RLIMIT_CPU, &limits);
1325#endif
1326#ifdef RLIMIT_FSIZE
1327 setrlimit (RLIMIT_FSIZE, &limits);
1328#endif
1329#ifdef RLIMIT_DATA
1330 setrlimit (RLIMIT_DATA, &limits);
1331#endif
1332#ifdef RLIMIT_STACK
1333 setrlimit (RLIMIT_STACK, &limits);
1334#endif
1335#ifdef RLIMIT_RSS
1336 setrlimit (RLIMIT_RSS, &limits);
1337#endif
1338#ifdef RLIMIT_NPROC
1339 setrlimit (RLIMIT_NPROC, &limits);
1340#endif
1341#ifdef RLIMIT_MEMLOCK
1342 setrlimit (RLIMIT_MEMLOCK, &limits);
1343#endif
1344
1345#if !defined(SL_DEBUG)
1346 /* no core dumps
1347 */
1348 limits.rlim_cur = 0;
1349 limits.rlim_max = 0;
1350#ifdef RLIMIT_CORE
1351 setrlimit (RLIMIT_CORE, &limits);
1352#endif
1353#else
1354#ifdef RLIMIT_CORE
1355 setrlimit (RLIMIT_CORE, &limits);
1356#endif
1357#endif
1358
1359 limits.rlim_cur = 1024;
1360 limits.rlim_max = 1024;
1361
1362#if defined(RLIMIT_NOFILE)
1363 setrlimit (RLIMIT_NOFILE, &limits);
1364#elif defined(RLIMIT_OFILE)
1365 setrlimit (RLIMIT_OFILE, &limits);
1366#endif
1367
1368 SL_RET0(_("sh_unix_setlimits"));
1369}
1370
1371static void sh_unix_copyenv(void)
1372{
1373 char ** env0 = environ;
1374 char ** env1;
1375 int envlen = 0;
1376 size_t len;
1377
1378 SL_ENTER(_("sh_unix_copyenv"));
1379
1380 while (env0 != NULL && env0[envlen] != NULL) {
1381 /* printf("%2d: %s\n", envlen, env0[envlen]); */
1382 ++envlen;
1383 }
1384 ++envlen;
1385
1386 /* printf("-> %2d: slots allocated\n", envlen); */
1387 env1 = malloc (sizeof(char *) * envlen); /* only once */
1388 if (env1 == NULL)
1389 {
1390 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1391 SL_RET0(_("sh_unix_copyenv"));
1392 }
1393 env0 = environ;
1394 envlen = 0;
1395
1396 while (env0 != NULL && env0[envlen] != NULL) {
1397 len = strlen(env0[envlen]) + 1;
1398 env1[envlen] = malloc (len); /* only once */
1399 if (env1[envlen] == NULL)
1400 {
1401 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1402 SL_RET0(_("sh_unix_copyenv"));
1403 }
1404 sl_strlcpy(env1[envlen], env0[envlen], len);
1405 ++envlen;
1406 }
1407 env1[envlen] = NULL;
1408
1409 environ = env1;
1410 SL_RET0(_("sh_unix_copyenv"));
1411}
1412
1413/* delete all environment variables
1414 */
1415static void sh_unix_zeroenv(void)
1416{
1417 char * c;
1418 char ** env;
1419
1420 SL_ENTER(_("sh_unix_zeroenv"));
1421
1422 sh_unix_copyenv();
1423 env = environ;
1424
1425 while (env != NULL && *env != NULL) {
1426 c = strchr ((*env), '=');
1427#ifdef WITH_MYSQL
1428 /*
1429 * Skip the MYSQL_UNIX_PORT environment variable; MySQL may need it.
1430 */
1431 if (0 == sl_strncmp((*env), _("MYSQL_UNIX_PORT="), 16))
1432 {
1433 ++(env);
1434 continue;
1435 }
1436 if (0 == sl_strncmp((*env), _("MYSQL_TCP_PORT="), 15))
1437 {
1438 ++(env);
1439 continue;
1440 }
1441 if (0 == sl_strncmp((*env), _("MYSQL_HOME="), 11))
1442 {
1443 ++(env);
1444 continue;
1445 }
1446#endif
1447#ifdef WITH_ORACLE
1448 /*
1449 * Skip the ORACLE_HOME environment variable; Oracle may need it.
1450 */
1451 if (0 == sl_strncmp((*env), _("ORACLE_HOME="), 12))
1452 {
1453 ++(env);
1454 continue;
1455 }
1456#endif
1457 /*
1458 * Skip the TZ environment variable.
1459 */
1460 if (0 == sl_strncmp((*env), _("TZ="), 3))
1461 {
1462 ++(env);
1463 continue;
1464 }
1465 ++(env);
1466 if (c != NULL)
1467 {
1468 ++c;
1469 while ((*c) != '\0') {
1470 (*c) = '\0';
1471 ++c;
1472 }
1473 }
1474 }
1475
1476#ifdef HAVE_TZSET
1477 tzset();
1478#endif
1479
1480 SL_RET0(_("sh_unix_zeroenv"));
1481}
1482
1483
1484static void sh_unix_resettimer(void)
1485{
1486 struct itimerval this_timer;
1487
1488 SL_ENTER(_("sh_unix_resettimer"));
1489
1490 this_timer.it_value.tv_sec = 0;
1491 this_timer.it_value.tv_usec = 0;
1492
1493 this_timer.it_interval.tv_sec = 0;
1494 this_timer.it_interval.tv_usec = 0;
1495
1496 setitimer(ITIMER_REAL, &this_timer, NULL);
1497#if !defined(SH_PROFILE)
1498 setitimer(ITIMER_VIRTUAL, &this_timer, NULL);
1499 setitimer(ITIMER_PROF, &this_timer, NULL);
1500#endif
1501
1502 SL_RET0(_("sh_unix_resettimer"));
1503}
1504
1505static void sh_unix_resetsignals(void)
1506{
1507 int sig_num;
1508#ifdef NSIG
1509 int max_sig = NSIG;
1510#else
1511 int max_sig = 255;
1512#endif
1513 int test;
1514 int status;
1515 struct sigaction act;
1516#if !defined(SH_PROFILE)
1517 struct sigaction oldact;
1518#endif
1519
1520 sigset_t set_proc;
1521
1522 SL_ENTER(_("sh_unix_resetsignals"));
1523 /*
1524 * Reset the current signal mask (inherited from parent process).
1525 */
1526
1527 sigfillset(&set_proc);
1528
1529 do {
1530 errno = 0;
1531 test = SH_SETSIGMASK(SIG_UNBLOCK, &set_proc, NULL);
1532 } while (test < 0 && errno == EINTR);
1533
1534 /*
1535 * Reset signal handling.
1536 */
1537
1538 act.sa_handler = SIG_DFL; /* signal action */
1539 sigemptyset( &act.sa_mask ); /* set an empty mask */
1540 act.sa_flags = 0; /* init sa_flags */
1541
1542 for (sig_num = 1; sig_num <= max_sig; ++sig_num)
1543 {
1544#if !defined(SH_PROFILE)
1545 test = retry_sigaction(FIL__, __LINE__, sig_num, &act, &oldact);
1546#else
1547 test = 0;
1548#endif
1549 if ((test == -1) && (errno != EINVAL))
1550 {
1551 char errbuf[SH_ERRBUF_SIZE];
1552 status = errno;
1553 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_SIG,
1554 sh_error_message (status, errbuf, sizeof(errbuf)), sig_num);
1555 }
1556 }
1557
1558 SL_RET0(_("sh_unix_resetsignals"));
1559}
1560
1561/* Get the local hostname (FQDN)
1562 */
1563static char * sh_tolower (char * s)
1564{
1565 char * ret = s;
1566 if (s)
1567 {
1568 for (; *s; ++s)
1569 {
1570 *s = tolower((unsigned char) *s);
1571 }
1572 }
1573 return ret;
1574}
1575
1576
1577#include <sys/socket.h>
1578
1579/* Required for BSD
1580 */
1581#ifdef HAVE_NETINET_IN_H
1582#include <netinet/in.h>
1583#endif
1584
1585#include <arpa/inet.h>
1586
1587const char * sh_unix_h_name (struct hostent * host_entry)
1588{
1589 char ** p;
1590 if (strchr(host_entry->h_name, '.')) {
1591 return host_entry->h_name;
1592 } else {
1593 for (p = host_entry->h_aliases; *p; ++p) {
1594 if (strchr(*p, '.'))
1595 return *p;
1596 }
1597 }
1598 return host_entry->h_name;
1599}
1600
1601/* uname() on FreeBSD is broken, because the 'nodename' buf is too small
1602 * to hold a valid (leftmost) domain label.
1603 */
1604#if defined(HAVE_UNAME) && !defined(HOST_IS_FREEBSD)
1605#include <sys/utsname.h>
1606void sh_unix_localhost()
1607{
1608 struct utsname buf;
1609 int i;
1610 int ddot;
1611 int len;
1612 char * p;
1613 char hostname[256];
1614 char numeric[SH_IP_BUF];
1615 char * canonical;
1616
1617
1618 SL_ENTER(_("sh_unix_localhost"));
1619
1620 (void) uname (&buf);
1621 /* flawfinder: ignore */ /* ff bug, ff sees system() */
1622 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1623 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1624 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1625
1626 /* Workaround for cases where nodename could be
1627 * a truncated FQDN.
1628 */
1629 if (strlen(buf.nodename) == (sizeof(buf.nodename)-1))
1630 {
1631 p = strchr(buf.nodename, '.');
1632 if (NULL != p) {
1633 *p = '\0';
1634 sl_strlcpy(hostname, buf.nodename, 256);
1635 } else {
1636#ifdef HAVE_GETHOSTNAME
1637 if (0 != gethostname(hostname, 256))
1638 {
1639 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1640 _("nodename returned by uname may be truncated"),
1641 _("sh_unix_localhost"));
1642 sl_strlcpy (hostname, buf.nodename, 256);
1643 }
1644 else
1645 {
1646 hostname[255] = '\0';
1647 }
1648#else
1649 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1650 _("nodename returned by uname may be truncated"),
1651 _("sh_unix_localhost"));
1652 sl_strlcpy(hostname, buf.nodename, 256);
1653#endif
1654 }
1655 }
1656 else
1657 {
1658 sl_strlcpy(hostname, buf.nodename, 256);
1659 }
1660
1661 canonical = sh_ipvx_canonical(hostname, numeric, sizeof(numeric));
1662
1663 if (canonical == NULL)
1664 {
1665 sl_strlcpy (sh.host.name, hostname, SH_PATHBUF);
1666 sh_tolower (sh.host.name);
1667 }
1668 else
1669 {
1670 sl_strlcpy (sh.host.name, canonical, SH_PATHBUF);
1671 SH_FREE(canonical);
1672 }
1673
1674 /* check whether it looks like a FQDN
1675 */
1676 len = sl_strlen(sh.host.name);
1677 ddot = 0;
1678 for (i = 0; i < len; ++i)
1679 if (sh.host.name[i] == '.') ++ddot;
1680
1681 if (ddot == 0)
1682 {
1683 dlog(1, FIL__, __LINE__,
1684 _("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"),
1685 hostname, sh.host.name);
1686 sl_strlcpy (sh.host.name, numeric, SH_PATHBUF);
1687 SL_RET0(_("sh_unix_localhost"));
1688 }
1689
1690 if (sh_ipvx_is_numeric(sh.host.name))
1691 {
1692 dlog(1, FIL__, __LINE__,
1693 _("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"),
1694 hostname, sh.host.name);
1695 }
1696
1697 SL_RET0(_("sh_unix_localhost"));
1698}
1699
1700#else
1701
1702/*
1703 * --FreeBSD code
1704 */
1705#if defined(HAVE_UNAME)
1706#include <sys/utsname.h>
1707#endif
1708void sh_unix_localhost()
1709{
1710#if defined(HAVE_UNAME)
1711 struct utsname buf;
1712#endif
1713 int i;
1714 int ddot;
1715 int len;
1716 char hostname[1024];
1717 char numeric[SH_IP_BUF];
1718 char * canonical;
1719
1720 SL_ENTER(_("sh_unix_localhost"));
1721
1722#if defined(HAVE_UNAME)
1723 (void) uname (&buf);
1724 /* flawfinder: ignore */ /* ff bug, ff sees system() */
1725 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1726 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1727 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1728#endif
1729
1730 (void) gethostname (hostname, 1024);
1731 hostname[1023] = '\0';
1732
1733 canonical = sh_ipvx_canonical(hostname, numeric, sizeof(numeric));
1734
1735 if (canonical == NULL)
1736 {
1737 sl_strlcpy (sh.host.name, hostname, SH_PATHBUF);
1738 sh_tolower (sh.host.name);
1739 }
1740 else
1741 {
1742 sl_strlcpy (sh.host.name, canonical, SH_PATHBUF);
1743 SH_FREE(canonical);
1744 }
1745
1746 /* check whether it looks like a FQDN
1747 */
1748 len = sl_strlen(sh.host.name);
1749 ddot = 0;
1750 for (i = 0; i < len; ++i)
1751 if (sh.host.name[i] == '.') ++ddot;
1752 if (ddot == 0)
1753 {
1754 dlog(1, FIL__, __LINE__,
1755 _("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"),
1756 hostname, sh.host.name);
1757 sl_strlcpy (sh.host.name, numeric, SH_PATHBUF);
1758 SL_RET0(_("sh_unix_localhost"));
1759 }
1760
1761 if (sh_ipvx_is_numeric(sh.host.name))
1762 {
1763 dlog(1, FIL__, __LINE__,
1764 _("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"),
1765 hostname, sh.host.name);
1766 }
1767
1768 SL_RET0(_("sh_unix_localhost"));
1769}
1770#endif
1771
1772
1773void sh_unix_memlock()
1774{
1775 SL_ENTER(_("sh_unix_memlock"));
1776
1777 /* do this before dropping privileges
1778 */
1779#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
1780 if (skey->mlock_failed == SL_FALSE)
1781 {
1782 if ( (-1) == sh_unix_mlock( FIL__, __LINE__,
1783 (char *) skey, sizeof (sh_key_t)) )
1784 {
1785 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1786 skey->mlock_failed = SL_TRUE;
1787 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1788 }
1789 }
1790#else
1791 if (skey->mlock_failed == SL_FALSE)
1792 {
1793 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1794 skey->mlock_failed = SL_TRUE;
1795 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1796 }
1797#endif
1798
1799 SL_RET0(_("sh_unix_memlock"));
1800}
1801
1802#ifdef SH_WITH_SERVER
1803char * chroot_dir = NULL;
1804
1805int sh_unix_set_chroot(const char * str)
1806{
1807 size_t len;
1808 static int block = 0;
1809
1810 if (block == 1)
1811 return 0;
1812
1813 if (str && *str == '/')
1814 {
1815 len = strlen(str) + 1;
1816 chroot_dir = malloc(strlen(str) + 1); /* only once */
1817 if (!chroot_dir)
1818 {
1819 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1820 return 1;
1821 }
1822 sl_strlcpy(chroot_dir, str, len);
1823 block = 1;
1824 return 0;
1825 }
1826 return 1;
1827}
1828
1829int sh_unix_chroot(void)
1830{
1831 int status;
1832
1833 if (chroot_dir != NULL)
1834 {
1835 status = retry_aud_chdir(FIL__, __LINE__, chroot_dir);
1836 if ( (-1) == status )
1837 {
1838 char errbuf[SH_ERRBUF_SIZE];
1839 status = errno;
1840 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
1841 sh_error_message (status, errbuf, sizeof(errbuf)), chroot_dir);
1842 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1843 }
1844 /* flawfinder: ignore */
1845 return (chroot(chroot_dir));
1846 }
1847 return 0;
1848}
1849/* #ifdef SH_WITH_SERVER */
1850#else
1851int sh_unix_chroot(void) { return 0; }
1852#endif
1853
1854/* daemon mode
1855 */
1856static int block_setdeamon = 0;
1857
1858int sh_unix_setdeamon(const char * dummy)
1859{
1860 int res = 0;
1861
1862 SL_ENTER(_("sh_unix_setdeamon"));
1863
1864 if (block_setdeamon != 0)
1865 SL_RETURN((0),_("sh_unix_setdeamon"));
1866
1867 if (dummy == NULL)
1868 sh.flag.isdaemon = ON;
1869 else
1870 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1871
1872 if (sh.flag.opts == S_TRUE)
1873 block_setdeamon = 1;
1874
1875 SL_RETURN(res, _("sh_unix_setdeamon"));
1876}
1877#if defined(HAVE_LIBPRELUDE)
1878#include "sh_prelude.h"
1879#endif
1880
1881int sh_unix_setnodeamon(const char * dummy)
1882{
1883 int res = 0;
1884
1885 SL_ENTER(_("sh_unix_setnodeamon"));
1886
1887 if (block_setdeamon != 0)
1888 SL_RETURN((0),_("sh_unix_setmodeamon"));
1889
1890 if (dummy == NULL)
1891 sh.flag.isdaemon = OFF;
1892 else
1893 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1894
1895 if (sh.flag.opts == S_TRUE)
1896 block_setdeamon = 1;
1897
1898 SL_RETURN(res, _("sh_unix_setnodeamon"));
1899}
1900
1901int sh_unix_init(int goDaemon)
1902{
1903 int status;
1904 uid_t uid;
1905 pid_t oldpid = getpid();
1906#if defined(SH_WITH_SERVER)
1907 extern int sh_socket_open_int (void);
1908#endif
1909 char errbuf[SH_ERRBUF_SIZE];
1910
1911 extern void sh_kill_sub();
1912
1913 SL_ENTER(_("sh_unix_init"));
1914
1915 /* fork twice, exit the parent process
1916 */
1917 if (goDaemon == 1) {
1918
1919 switch (aud_fork(FIL__, __LINE__)) {
1920 case 0: break; /* child process continues */
1921 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1922 default: /* parent process exits */
1923 sh_kill_sub();
1924 aud__exit(FIL__, __LINE__, 0);
1925 }
1926
1927 /* Child processes do not inherit page locks across a fork.
1928 * Error in next fork would return in this (?) thread of execution.
1929 */
1930 sh_unix_memlock();
1931
1932 setsid(); /* should not fail */
1933 sh.pid = (UINT64) getpid();
1934
1935 switch (aud_fork(FIL__, __LINE__)) {
1936 case 0: break; /* child process continues */
1937 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1938 default: /* parent process exits */
1939 sh_kill_sub();
1940 aud__exit(FIL__, __LINE__, 0);
1941 }
1942
1943 /* Child processes do not inherit page locks across a fork.
1944 */
1945 sh_unix_memlock();
1946 sh.pid = (UINT64) getpid();
1947
1948 } else {
1949 setsid(); /* should not fail */
1950 }
1951
1952 /* set working directory
1953 */
1954#ifdef SH_PROFILE
1955 status = 0;
1956#else
1957 status = retry_aud_chdir(FIL__, __LINE__, "/");
1958#endif
1959 if ( (-1) == status )
1960 {
1961 status = errno;
1962 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
1963 sh_error_message (status, errbuf, sizeof(errbuf)), "/");
1964 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1965 }
1966
1967 /* reset timers
1968 */
1969 sh_unix_resettimer();
1970
1971 /* signal handlers
1972 */
1973 sh_unix_resetsignals();
1974#if defined(SCREW_IT_UP)
1975 sh_sigtrap_prepare();
1976#endif
1977 sh_unix_siginstall (goDaemon);
1978
1979 /* set file creation mask
1980 */
1981 (void) umask (0); /* should not fail */
1982
1983 /* set resource limits to maximum, and
1984 * core dump size to zero
1985 */
1986 sh_unix_setlimits();
1987
1988 /* zero out the environment (like PATH='\0')
1989 */
1990 sh_unix_zeroenv();
1991
1992 if (goDaemon == 1)
1993 {
1994 /* Close first tree file descriptors
1995 */
1996 sl_close_fd (FIL__, __LINE__, 0); /* if running as daemon */
1997 sl_close_fd (FIL__, __LINE__, 1); /* if running as daemon */
1998 sl_close_fd (FIL__, __LINE__, 2); /* if running as daemon */
1999
2000 /* Enable full error logging
2001 */
2002 sh_error_only_stderr (S_FALSE);
2003
2004 /* open first three streams to /dev/null
2005 */
2006 status = aud_open(FIL__, __LINE__, SL_NOPRIV, _("/dev/null"), O_RDWR, 0);
2007 if (status < 0)
2008 {
2009 status = errno;
2010 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2011 sh_error_message(status, errbuf, sizeof(errbuf)), _("open"));
2012 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2013 }
2014
2015 status = retry_aud_dup(FIL__, __LINE__, 0);
2016 if (status >= 0)
2017 retry_aud_dup(FIL__, __LINE__, 0);
2018
2019 if (status < 0)
2020 {
2021 status = errno;
2022 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2023 sh_error_message(status, errbuf, sizeof(errbuf)), _("dup"));
2024 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2025 }
2026
2027 sh_error_enable_unsafe (S_TRUE);
2028#if defined(HAVE_LIBPRELUDE)
2029 sh_prelude_reset ();
2030#endif
2031
2032 /* --- wait until parent has exited ---
2033 */
2034 while (1 == 1)
2035 {
2036 errno = 0;
2037 if (0 > aud_kill (FIL__, __LINE__, oldpid, 0) && errno == ESRCH)
2038 {
2039 break;
2040 }
2041 retry_msleep(0, 1);
2042 }
2043
2044 /* write PID file
2045 */
2046 status = sh_unix_write_pid_file();
2047 if (status < 0)
2048 {
2049 sl_get_euid(&uid);
2050 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_PIDFILE,
2051 (long) uid, sh.srvlog.alt);
2052 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2053 }
2054#if defined(SH_WITH_SERVER)
2055 sh_socket_open_int ();
2056#endif
2057 }
2058 else
2059 {
2060 sh_error_enable_unsafe (S_TRUE);
2061#if defined(HAVE_LIBPRELUDE)
2062 sh_prelude_reset ();
2063#endif
2064#if defined(SH_WITH_SERVER)
2065 sh_socket_open_int ();
2066#endif
2067 }
2068
2069 /* chroot (this is a no-op if no chroot dir is specified
2070 */
2071 status = sh_unix_chroot();
2072 if (status < 0)
2073 {
2074 status = errno;
2075 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2076 sh_error_message(status, errbuf, sizeof(errbuf)), _("chroot"));
2077 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2078 }
2079
2080 /* drop capabilities
2081 */
2082 sl_drop_cap();
2083
2084 SL_RETURN((0),_("sh_unix_init"));
2085}
2086
2087/* --- run a command, securely --- */
2088
2089int sh_unix_run_command (const char * str)
2090{
2091 pid_t pid;
2092 char * arg[4];
2093 char * env[5];
2094 char * path = sh_util_strdup(_("/bin/sh"));
2095
2096 int status = -1;
2097
2098 arg[0] = sh_util_strdup(_("/bin/sh"));
2099 arg[1] = sh_util_strdup(_("-c"));
2100 arg[2] = sh_util_strdup(str);
2101 arg[3] = NULL;
2102
2103 env[0] = sh_util_strdup(_("PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/ucb"));
2104 env[1] = sh_util_strdup(_("SHELL=/bin/sh"));
2105 env[2] = sh_util_strdup(_("IFS= \t\n"));
2106 if (getenv("TZ")) { /* flawfinder: ignore */
2107 char * tz = sh_util_strdup(getenv("TZ")); /* flawfinder: ignore */
2108 size_t tzlen = strlen(tz);
2109 if (SL_TRUE == sl_ok_adds (4, tzlen)) {
2110 env[3] = SH_ALLOC(4+tzlen);
2111 sl_strlcpy(env[3], "TZ=", 4);
2112 sl_strlcat(env[3], tz , 4+tzlen);
2113 } else {
2114 env[3] = NULL;
2115 }
2116 } else {
2117 env[3] = NULL;
2118 }
2119 env[4] = NULL;
2120
2121 pid = fork();
2122
2123 if (pid == (pid_t)(-1))
2124 {
2125 return -1;
2126 }
2127
2128 else if (pid == 0) /* child */
2129 {
2130 memset(skey, 0, sizeof(sh_key_t));
2131 (void) umask(S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
2132 sh_unix_closeall (3, -1, SL_TRUE); /* in child process */
2133 execve(path, arg, env);
2134 _exit(EXIT_FAILURE);
2135 }
2136
2137 else /* parent */
2138 {
2139 int r;
2140
2141 while((r = waitpid(pid, &status, WUNTRACED)) != pid && r != -1) ;
2142
2143#if !defined(USE_UNO)
2144 if (r == -1 || !WIFEXITED(status))
2145 {
2146 status = -1;
2147 }
2148 else
2149 {
2150 status = WEXITSTATUS(status);
2151 }
2152#endif
2153 }
2154
2155 return status;
2156}
2157
2158/********************************************************
2159 *
2160 * TIME
2161 *
2162 ********************************************************/
2163
2164/* Figure out the time offset of the current timezone
2165 * in a portable way.
2166 */
2167char * t_zone(const time_t * xx)
2168{
2169 struct tm aa;
2170 struct tm bb;
2171 struct tm * cc;
2172 int sign = 0;
2173 int diff = 0;
2174 int hh, mm;
2175 static char tz[64];
2176
2177 SL_ENTER(_("t_zone"));
2178
2179#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2180 cc = gmtime_r (xx, &aa);
2181#else
2182 cc = gmtime (xx);
2183 memcpy (&aa, cc, sizeof(struct tm));
2184#endif
2185
2186#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2187 cc = localtime_r (xx, &bb);
2188#else
2189 cc = localtime (xx);
2190 memcpy (&bb, cc, sizeof(struct tm));
2191#endif
2192
2193 /* Check for datum wrap-around.
2194 */
2195 if (aa.tm_year < bb.tm_year)
2196 sign = (-1);
2197 else if (aa.tm_mon < bb.tm_mon)
2198 sign = (-1);
2199 else if (aa.tm_mday < bb.tm_mday)
2200 sign = (-1);
2201 else if (bb.tm_year < aa.tm_year)
2202 sign = ( 1);
2203 else if (bb.tm_mon < aa.tm_mon)
2204 sign = ( 1);
2205 else if (bb.tm_mday < aa.tm_mday)
2206 sign = ( 1);
2207
2208 diff = aa.tm_hour * 60 + aa.tm_min;
2209 diff = (bb.tm_hour * 60 + bb.tm_min) - diff;
2210 diff = diff - (sign * 24 * 60); /* datum wrap-around correction */
2211 hh = diff / 60;
2212 mm = diff - (hh * 60);
2213 sprintf (tz, _("%+03d%02d"), hh, mm); /* known to fit */
2214
2215 SL_RETURN(tz, _("t_zone"));
2216}
2217
2218unsigned long sh_unix_longtime ()
2219{
2220 return ((unsigned long)time(NULL));
2221}
2222
2223#ifdef HAVE_GETTIMEOFDAY
2224unsigned long sh_unix_notime ()
2225{
2226 struct timeval tv;
2227
2228 gettimeofday (&tv, NULL);
2229
2230 return ((unsigned long)(tv.tv_sec + tv.tv_usec * 10835 + getpid() + getppid()));
2231
2232}
2233#endif
2234
2235static int count_dev_time = 0;
2236
2237void reset_count_dev_time(void)
2238{
2239 count_dev_time = 0;
2240 return;
2241}
2242
2243int sh_unix_settimeserver (const char * address)
2244{
2245
2246 SL_ENTER(_("sh_unix_settimeserver"));
2247
2248 if (address != NULL && count_dev_time < 2
2249 && sl_strlen(address) < SH_PATHBUF)
2250 {
2251 if (count_dev_time == 0)
2252 sl_strlcpy (sh.srvtime.name, address, SH_PATHBUF);
2253 else
2254 sl_strlcpy (sh.srvtime.alt, address, SH_PATHBUF);
2255
2256 ++count_dev_time;
2257 SL_RETURN((0), _("sh_unix_settimeserver"));
2258 }
2259 SL_RETURN((-1), _("sh_unix_settimeserver"));
2260}
2261
2262
2263#ifdef HAVE_NTIME
2264#define UNIXEPOCH 2208988800UL /* difference between Unix time and net time
2265 * The UNIX EPOCH starts in 1970.
2266 */
2267#include <sys/socket.h>
2268#include <netinet/in.h>
2269#include <arpa/inet.h>
2270#include <netdb.h>
2271#include <ctype.h>
2272#endif
2273
2274/* Timeserver service. */
2275/* define is missing on HP-UX 10.20 */
2276#ifndef IPPORT_TIMESERVER
2277#define IPPORT_TIMESERVER 37
2278#endif
2279
2280char * sh_unix_time (time_t thetime, char * buffer, size_t len)
2281{
2282
2283 int status;
2284 char AsciiTime[81]; /* local time */
2285 time_t time_now;
2286 struct tm * time_ptr;
2287#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2288 struct tm time_tm;
2289#endif
2290#ifdef SH_USE_XML
2291 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2292#else
2293 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2294#endif
2295
2296#ifdef HAVE_NTIME
2297 int fd; /* network file descriptor */
2298 u_char net_time[4]; /* remote time in network format */
2299 static int failerr = 0; /* no net time */
2300 int fail = 0; /* no net time */
2301 int errflag;
2302 char errmsg[256];
2303 char error_call[SH_MINIBUF];
2304 int error_num;
2305#endif
2306
2307 SL_ENTER(_("sh_unix_time"));
2308
2309#ifdef HAVE_NTIME
2310 if (thetime == 0)
2311 {
2312 if (sh.srvtime.name[0] == '\0')
2313 {
2314 fail = 1;
2315 (void) time (&time_now);
2316 }
2317 else /* have a timeserver address */
2318 {
2319 /* don't call timeserver more than once per second */
2320 static time_t time_old = 0;
2321 time_t time_new;
2322 static time_t time_saved = 0;
2323 (void) time (&time_new);
2324 if ((time_new == time_old) && (time_saved != 0))
2325 {
2326 time_now = time_saved;
2327 goto end;
2328 }
2329 time_old = time_new;
2330
2331
2332 fd = connect_port_2 (sh.srvtime.name, sh.srvtime.alt,
2333 IPPORT_TIMESERVER,
2334 error_call, &error_num, errmsg, sizeof(errmsg));
2335 if (fd >= 0)
2336 {
2337 if (4 != read_port (fd, (char *) net_time, 4, &errflag, 2))
2338 {
2339 fail = 1;
2340 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2341 MSG_E_NLOST,
2342 _("time"), sh.srvtime.name);
2343 }
2344 sl_close_fd(FIL__, __LINE__, fd);
2345 }
2346 else
2347 {
2348 sh_error_handle ((-1), FIL__, __LINE__, error_num,
2349 MSG_E_NET, errmsg, error_call,
2350 _("time"), sh.srvtime.name);
2351 fail = 1;
2352 }
2353
2354 if (fail == 0)
2355 {
2356 unsigned long ltmp;
2357 UINT32 ttmp;
2358 memcpy(&ttmp, net_time, sizeof(UINT32)); ltmp = ttmp;
2359 time_now = ntohl(ltmp) - UNIXEPOCH;
2360 time_saved = time_now;
2361
2362 if (failerr == 1) {
2363 failerr = 0;
2364 sh_error_handle ((-1), FIL__, __LINE__, 0,
2365 MSG_E_NEST,
2366 _("time"), sh.srvtime.name);
2367 }
2368 }
2369 else
2370 {
2371 (void) time (&time_now);
2372 time_saved = 0;
2373
2374 if (failerr == 0)
2375 {
2376 failerr = 1;
2377 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2378 MSG_SRV_FAIL,
2379 _("time"), sh.srvtime.name);
2380 }
2381 }
2382 end:
2383 ; /* 'label at end of compound statement' */
2384 }
2385 }
2386 else
2387 {
2388 time_now = thetime;
2389 }
2390
2391 /* #ifdef HAVE_NTIME */
2392#else
2393
2394 if (thetime == 0)
2395 {
2396 (void) time (&time_now);
2397 }
2398 else
2399 {
2400 time_now = thetime;
2401 }
2402
2403 /* #ifdef HAVE_NTIME */
2404#endif
2405
2406 if (time_now == (-1) )
2407 {
2408 sl_strlcpy(buffer, _(deftime), len);
2409 SL_RETURN(buffer, _("sh_unix_time"));
2410 }
2411 else
2412 {
2413#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2414 time_ptr = localtime_r (&time_now, &time_tm);
2415#else
2416 time_ptr = localtime (&time_now);
2417#endif
2418 }
2419 if (time_ptr != NULL)
2420 {
2421 status = strftime (AsciiTime, sizeof(AsciiTime),
2422#ifdef SH_USE_XML
2423 _("%Y-%m-%dT%H:%M:%S%%s"),
2424#else
2425 _("[%Y-%m-%dT%H:%M:%S%%s]"),
2426#endif
2427 time_ptr);
2428
2429 sl_snprintf(buffer, len, AsciiTime, t_zone(&time_now));
2430
2431 if ( (status == 0) || (status == sizeof(AsciiTime)) )
2432 {
2433 sl_strlcpy(buffer, _(deftime), len);
2434 SL_RETURN( buffer, _("sh_unix_time"));
2435 }
2436 else
2437 {
2438 SL_RETURN(buffer, _("sh_unix_time"));
2439 }
2440 }
2441
2442 /* last resort
2443 */
2444 sl_strlcpy(buffer, _(deftime), len);
2445 SL_RETURN( buffer, _("sh_unix_time"));
2446}
2447
2448static int sh_unix_use_localtime = S_FALSE;
2449
2450/* whether to use localtime for file timesatams in logs
2451 */
2452int sh_unix_uselocaltime (const char * c)
2453{
2454 int i;
2455 SL_ENTER(_("sh_unix_uselocaltime"));
2456 i = sh_util_flagval(c, &(sh_unix_use_localtime));
2457
2458 SL_RETURN(i, _("sh_unix_uselocaltime"));
2459}
2460
2461char * sh_unix_gmttime (time_t thetime, char * buffer, size_t len)
2462{
2463
2464 int status;
2465
2466 struct tm * time_ptr;
2467#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS)
2468 struct tm time_tm;
2469#endif
2470 char AsciiTime[81]; /* GMT time */
2471#ifdef SH_USE_XML
2472 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2473#else
2474 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2475#endif
2476
2477 SL_ENTER(_("sh_unix_gmttime"));
2478
2479 if (sh_unix_use_localtime == S_FALSE)
2480 {
2481#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2482 time_ptr = gmtime_r (&thetime, &time_tm);
2483#else
2484 time_ptr = gmtime (&thetime);
2485#endif
2486 }
2487 else
2488 {
2489#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2490 time_ptr = localtime_r (&thetime, &time_tm);
2491#else
2492 time_ptr = localtime (&thetime);
2493#endif
2494 }
2495 if (time_ptr != NULL)
2496 {
2497 status = strftime (AsciiTime, 80,
2498#ifdef SH_USE_XML
2499 _("%Y-%m-%dT%H:%M:%S"),
2500#else
2501 _("[%Y-%m-%dT%H:%M:%S]"),
2502#endif
2503 time_ptr);
2504
2505 if ( (status == 0) || (status == 80) )
2506 sl_strlcpy(buffer, _(deftime), len);
2507 else
2508 sl_strlcpy(buffer, AsciiTime, len);
2509 SL_RETURN( buffer, _("sh_unix_gmttime"));
2510 }
2511
2512 /* last resort
2513 */
2514 sl_strlcpy(buffer, _(deftime), len);
2515 SL_RETURN( buffer, _("sh_unix_gmttime"));
2516}
2517
2518
2519char * sh_unix_getUIDdir (int level, uid_t uid, char * out, size_t len)
2520{
2521 struct passwd * tempres;
2522 int status = 0;
2523
2524#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2525 struct passwd pwd;
2526 char * buffer;
2527#endif
2528 char errbuf[SH_ERRBUF_SIZE];
2529
2530 SL_ENTER(_("sh_unix_getUIDdir"));
2531
2532#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2533 buffer = SH_ALLOC(SH_PWBUF_SIZE);
2534 sh_getpwuid_r(uid, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
2535#else
2536 errno = 0;
2537 tempres = sh_getpwuid(uid);
2538 status = errno;
2539#endif
2540
2541 if (tempres == NULL) {
2542 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2543 sh_error_message(status, errbuf, sizeof(errbuf)),
2544 _("getpwuid"), (long) uid, _("completely missing"));
2545#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2546 SH_FREE(buffer);
2547#endif
2548 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2549 }
2550
2551 if (tempres->pw_dir != NULL) {
2552 sl_strlcpy(out, tempres->pw_dir, len);
2553#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2554 SH_FREE(buffer);
2555#endif
2556 SL_RETURN( out, _("sh_unix_getUIDdir"));
2557 } else {
2558 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2559 sh_error_message(status, errbuf, sizeof(errbuf)),
2560 _("getpwuid"), (long) uid, _("pw_dir"));
2561#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2562 SH_FREE(buffer);
2563#endif
2564 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2565 }
2566}
2567
2568/* ------------------- Caching ----------------*/
2569#include "zAVLTree.h"
2570
2571#define CACHE_GID 0
2572#define CACHE_UID 1
2573
2574struct user_id {
2575 char * name;
2576 uid_t id;
2577 struct user_id * next;
2578};
2579
2580static struct user_id * uid_list = NULL;
2581static struct user_id * gid_list = NULL;
2582
2583SH_MUTEX_STATIC(mutex_cache, PTHREAD_MUTEX_INITIALIZER);
2584
2585static void sh_userid_free(struct user_id * item)
2586{
2587 while (item)
2588 {
2589 struct user_id * user = item;
2590 item = item->next;
2591
2592 SH_FREE(user->name);
2593 SH_FREE(user);
2594 }
2595 return;
2596}
2597
2598void sh_userid_destroy ()
2599{
2600 struct user_id * tmp_uid;
2601 struct user_id * tmp_gid;
2602
2603 SH_MUTEX_LOCK_UNSAFE(mutex_cache);
2604 tmp_gid = gid_list;
2605 gid_list = NULL;
2606 tmp_uid = uid_list;
2607 uid_list = NULL;
2608 SH_MUTEX_UNLOCK_UNSAFE(mutex_cache);
2609
2610 sh_userid_free(tmp_uid);
2611 sh_userid_free(tmp_gid);
2612 return;
2613}
2614
2615static void sh_userid_additem(struct user_id * list, struct user_id * item)
2616{
2617 while (list && list->next)
2618 list = list->next;
2619 list->next = item;
2620 return;
2621}
2622
2623static void sh_userid_add(uid_t id, char * username, int which)
2624{
2625 size_t len;
2626 struct user_id * user = SH_ALLOC(sizeof(struct user_id));
2627
2628 if (username)
2629 len = strlen(username) + 1;
2630 else
2631 len = 1;
2632
2633 user->name = SH_ALLOC(len);
2634 user->id = id;
2635 if (username)
2636 sl_strlcpy(user->name, username, len);
2637 else
2638 user->name[0] = '\0';
2639 user->next = NULL;
2640
2641 SH_MUTEX_LOCK(mutex_cache);
2642 if (which == CACHE_UID)
2643 {
2644 if (!uid_list)
2645 uid_list = user;
2646 else
2647 sh_userid_additem(uid_list, user);
2648 }
2649 else
2650 {
2651 if (!gid_list)
2652 gid_list = user;
2653 else
2654 sh_userid_additem(gid_list, user);
2655 }
2656 SH_MUTEX_UNLOCK(mutex_cache);
2657
2658 return;
2659}
2660
2661static char * sh_userid_search(struct user_id * list, uid_t id)
2662{
2663 while (list)
2664 {
2665 if (list->id == id)
2666 return list->name;
2667 list = list->next;
2668 }
2669 return NULL;
2670}
2671
2672static char * sh_userid_get (uid_t id, int which, char * out, size_t len)
2673{
2674 char * user = NULL;
2675
2676 SH_MUTEX_LOCK_UNSAFE(mutex_cache);
2677 if (which == CACHE_UID)
2678 user = sh_userid_search(uid_list, id);
2679 else
2680 user = sh_userid_search(gid_list, id);
2681 if (user)
2682 {
2683 sl_strlcpy(out, user, len);
2684 user = out;
2685 }
2686 SH_MUTEX_UNLOCK_UNSAFE(mutex_cache);
2687
2688 return user;
2689}
2690
2691/* --------- end caching code --------- */
2692
2693char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len)
2694{
2695 struct passwd * tempres;
2696#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2697 struct passwd pwd;
2698 char * buffer;
2699#endif
2700 int status = 0;
2701 char errbuf[SH_ERRBUF_SIZE];
2702 char * tmp;
2703
2704 SL_ENTER(_("sh_unix_getUIDname"));
2705
2706 tmp = sh_userid_get(uid, CACHE_UID, out, len);
2707
2708 if (tmp)
2709 {
2710 if (tmp[0] != '\0')
2711 {
2712 SL_RETURN( out, _("sh_unix_getUIDname"));
2713 }
2714 else
2715 {
2716 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2717 }
2718 }
2719
2720#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2721 buffer = SH_ALLOC(SH_PWBUF_SIZE);
2722 sh_getpwuid_r(uid, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
2723#else
2724 errno = 0;
2725 tempres = sh_getpwuid(uid);
2726 status = errno;
2727#endif
2728
2729 if (tempres == NULL)
2730 {
2731 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2732 sh_error_message(status, errbuf, sizeof(errbuf)),
2733 _("getpwuid"), (long) uid, _("completely missing"));
2734#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2735 SH_FREE(buffer);
2736#endif
2737 sh_userid_add(uid, NULL, CACHE_UID);
2738 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2739 }
2740
2741
2742 if (tempres->pw_name != NULL)
2743 {
2744
2745 sl_strlcpy(out, tempres->pw_name, len);
2746 sh_userid_add(uid, out, CACHE_UID);
2747
2748#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2749 SH_FREE(buffer);
2750#endif
2751
2752 SL_RETURN( out, _("sh_unix_getUIDname"));
2753 }
2754 else
2755 {
2756 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2757 sh_error_message(status, errbuf, sizeof(errbuf)),
2758 _("getpwuid"), (long) uid, _("pw_user"));
2759#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2760 SH_FREE(buffer);
2761#endif
2762 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2763 }
2764 /* notreached */
2765}
2766
2767char * sh_unix_getGIDname (int level, gid_t gid, char * out, size_t len)
2768{
2769 struct group * tempres;
2770 int status = 0;
2771
2772#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2773 struct group grp;
2774 char * buffer;
2775#endif
2776 char errbuf[SH_ERRBUF_SIZE];
2777 char * tmp;
2778
2779 SL_ENTER(_("sh_unix_getGIDname"));
2780
2781 tmp = sh_userid_get((uid_t)gid, CACHE_GID, out, len);
2782
2783 if (tmp)
2784 {
2785 if (tmp[0] != '\0')
2786 {
2787 SL_RETURN( out, _("sh_unix_getGIDname"));
2788 }
2789 else
2790 {
2791 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2792 }
2793 }
2794
2795#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2796 buffer = SH_ALLOC(SH_GRBUF_SIZE);
2797 status = sh_getgrgid_r(gid, &grp, buffer, SH_GRBUF_SIZE, &tempres);
2798#else
2799 errno = 0;
2800 tempres = sh_getgrgid(gid);
2801 status = errno;
2802#endif
2803
2804 if (tempres == NULL)
2805 {
2806 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
2807 sh_error_message(status, errbuf, sizeof(errbuf)),
2808 _("getgrgid"), (long) gid, _("completely missing"));
2809
2810#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2811 SH_FREE(buffer);
2812#endif
2813
2814 sh_userid_add(gid, NULL, CACHE_GID);
2815 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2816 }
2817
2818 if (tempres->gr_name != NULL)
2819 {
2820
2821 sl_strlcpy(out, tempres->gr_name, len);
2822 sh_userid_add((uid_t)gid, out, CACHE_GID);
2823
2824#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2825 SH_FREE(buffer);
2826#endif
2827
2828 SL_RETURN( out, _("sh_unix_getGIDname"));
2829 }
2830 else
2831 {
2832 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
2833 sh_error_message(status, errbuf, sizeof(errbuf)),
2834 _("getgrgid"), (long) gid, _("gr_name"));
2835
2836#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2837 SH_FREE(buffer);
2838#endif
2839
2840 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2841 }
2842 /* notreached */
2843}
2844
2845int sh_unix_getUser ()
2846{
2847 char * p;
2848 uid_t seuid, sruid;
2849 char user[USER_MAX];
2850 char dir[SH_PATHBUF];
2851
2852 SL_ENTER(_("sh_unix_getUser"));
2853
2854 seuid = geteuid();
2855
2856 sh.effective.uid = seuid;
2857
2858 p = sh_unix_getUIDdir (SH_ERR_ERR, seuid, dir, sizeof(dir));
2859
2860 if (p == NULL)
2861 SL_RETURN((-1), _("sh_unix_getUser"));
2862 else
2863 {
2864 if (sl_strlen(p) >= SH_PATHBUF) {
2865 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2866 _("getpwuid"), (long) seuid, _("pw_home"));
2867 SL_RETURN((-1), _("sh_unix_getUser"));
2868 } else {
2869 sl_strlcpy ( sh.effective.home, p, SH_PATHBUF);
2870 }
2871 }
2872
2873 sruid = getuid();
2874
2875 sh.real.uid = sruid;
2876
2877 p = sh_unix_getUIDname (SH_ERR_ERR, sruid, user, sizeof(user));
2878 if (p == NULL)
2879 SL_RETURN((-1), _("sh_unix_getUser"));
2880 else
2881 {
2882 if (sl_strlen(p) >= USER_MAX) {
2883 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2884 _("getpwuid"), (long) sruid, _("pw_user"));
2885 SL_RETURN((-1), _("sh_unix_getUser"));
2886 } else {
2887 sl_strlcpy ( sh.real.user, p, USER_MAX);
2888 }
2889 }
2890
2891 p = sh_unix_getUIDdir (SH_ERR_ERR, sruid, dir, sizeof(dir));
2892
2893 if (p == NULL)
2894 SL_RETURN((-1), _("sh_unix_getUser"));
2895 else
2896 {
2897 if (sl_strlen(p) >= SH_PATHBUF) {
2898 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2899 _("getpwuid"), (long) sruid, _("pw_home"));
2900 SL_RETURN((-1), _("sh_unix_getUser"));
2901 } else {
2902 sl_strlcpy ( sh.real.home, p, SH_PATHBUF);
2903 }
2904 }
2905
2906 SL_RETURN((0), _("sh_unix_getUser"));
2907
2908 /* notreached */
2909}
2910
2911
2912int sh_unix_getline (SL_TICKET fd, char * line, int sizeofline)
2913{
2914 register int count;
2915 register int n = 0;
2916 char c;
2917
2918 SL_ENTER(_("sh_unix_getline"));
2919
2920 if (sizeofline < 2) {
2921 line[0] = '\0';
2922 SL_RETURN((0), _("sh_unix_getline"));
2923 }
2924
2925 --sizeofline;
2926
2927 while (n < sizeofline) {
2928
2929 count = sl_read (fd, &c, 1);
2930
2931 /* end of file
2932 */
2933 if (count < 1) {
2934 line[n] = '\0';
2935 n = -1;
2936 break;
2937 }
2938
2939 if (/* c != '\0' && */ c != '\n') {
2940 line[n] = c;
2941 ++n;
2942 } else if (c == '\n') {
2943 if (n > 0) {
2944 line[n] = '\0';
2945 break;
2946 } else {
2947 line[n] = '\n'; /* get newline only if only char on line */
2948 ++n;
2949 line[n] = '\0';
2950 break;
2951 }
2952 } else {
2953 line[n] = '\0';
2954 break;
2955 }
2956
2957 }
2958
2959
2960 line[sizeofline] = '\0'; /* make sure line is terminated */
2961 SL_RETURN((n), _("sh_unix_getline"));
2962}
2963
2964
2965#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
2966
2967/**************************************************************
2968 *
2969 * --- FILE INFO ---
2970 *
2971 **************************************************************/
2972
2973#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
2974
2975#if defined(__linux__)
2976
2977/* --- Determine ext2fs file attributes. ---
2978 */
2979#include <sys/ioctl.h>
2980#if defined(HAVE_EXT2FS_EXT2_FS_H)
2981#include <ext2fs/ext2_fs.h>
2982#else
2983#include <linux/ext2_fs.h>
2984#endif
2985
2986/* __linux__ includes */
2987#endif
2988
2989static
2990int sh_unix_getinfo_attr (char * name,
2991 unsigned long * flags,
2992 char * c_attr,
2993 int fd, struct stat * buf)
2994{
2995
2996/* TAKEN FROM:
2997 *
2998 * lsattr.c - List file attributes on an ext2 file system
2999 *
3000 * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
3001 * Laboratoire MASI, Institut Blaise Pascal
3002 * Universite Pierre et Marie Curie (Paris VI)
3003 *
3004 * This file can be redistributed under the terms of the GNU General
3005 * Public License
3006 */
3007
3008#ifdef HAVE_STAT_FLAGS
3009
3010 SL_ENTER(_("sh_unix_getinfo_attr"));
3011
3012 *flags = 0;
3013
3014 /* cast to void to avoid compiler warning about unused parameters */
3015 (void) fd;
3016 (void) name;
3017
3018#ifdef UF_NODUMP
3019 if (buf->st_flags & UF_NODUMP) {
3020 *flags |= UF_NODUMP;
3021 c_attr[0] = 'd';
3022 }
3023#endif
3024#ifdef UF_IMMUTABLE
3025 if (buf->st_flags & UF_IMMUTABLE) {
3026 *flags |= UF_IMMUTABLE;
3027 c_attr[1] = 'i';
3028 }
3029#endif
3030#ifdef UF_APPEND
3031 if (buf->st_flags & UF_APPEND) {
3032 *flags |= UF_APPEND;
3033 c_attr[2] = 'a';
3034 }
3035#endif
3036#ifdef UF_NOUNLINK
3037 if (buf->st_flags & UF_NOUNLINK) {
3038 *flags |= UF_NOUNLINK;
3039 c_attr[3] = 'u';
3040 }
3041#endif
3042#ifdef UF_OPAQUE
3043 if (buf->st_flags & UF_OPAQUE) {
3044 *flags |= UF_OPAQUE;
3045 c_attr[4] = 'o';
3046 }
3047#endif
3048#ifdef SF_ARCHIVED
3049 if (buf->st_flags & SF_ARCHIVED) {
3050 *flags |= SF_ARCHIVED;
3051 c_attr[5] = 'R';
3052 }
3053
3054#endif
3055#ifdef SF_IMMUTABLE
3056 if (buf->st_flags & SF_IMMUTABLE) {
3057 *flags |= SF_IMMUTABLE;
3058 c_attr[6] = 'I';
3059 }
3060#endif
3061#ifdef SF_APPEND
3062 if (buf->st_flags & SF_APPEND) {
3063 *flags |= SF_APPEND;
3064 c_attr[7] = 'A';
3065 }
3066#endif
3067#ifdef SF_NOUNLINK
3068 if (buf->st_flags & SF_NOUNLINK) {
3069 *flags |= SF_NOUNLINK;
3070 c_attr[8] = 'U';
3071 }
3072#endif
3073
3074 /* ! HAVE_STAT_FLAGS */
3075#else
3076
3077#ifdef HAVE_EXT2_IOCTLS
3078 int /* fd, */ r, f;
3079
3080 SL_ENTER(_("sh_unix_getinfo_attr"));
3081
3082 *flags = 0;
3083 (void) buf;
3084
3085 /* open() -> aud_open() R.Wichmann
3086 fd = aud_open (FIL__, __LINE__, SL_YESPRIV, name, O_RDONLY|O_NONBLOCK, 0);
3087 */
3088
3089 if (fd == -1 || name == NULL)
3090 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
3091
3092
3093 r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
3094 /* sl_close_fd (FIL__, __LINE__, fd); */
3095
3096 if (r == -1)
3097 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
3098
3099 if (f == 0)
3100 SL_RETURN(0, _("sh_unix_getinfo_attr"));
3101
3102 *flags = f;
3103
3104/* ! HAVE_EXT2_IOCTLS */
3105#else
3106
3107 SL_ENTER(_("sh_unix_getinfo_attr"));
3108
3109 *flags = 0; /* modified by R.Wichmann */
3110
3111/* ! HAVE_EXT2_IOCTLS */
3112#endif
3113/*
3114 * END
3115 *
3116 * lsattr.c - List file attributes on an ext2 file system
3117 */
3118
3119 if (*flags == 0)
3120 goto theend;
3121
3122#ifdef EXT2_SECRM_FL
3123 if ( (*flags & EXT2_SECRM_FL) != 0 ) c_attr[0] = 's';
3124#endif
3125#ifdef EXT2_UNRM_FL
3126 if ( (*flags & EXT2_UNRM_FL) != 0 ) c_attr[1] = 'u';
3127#endif
3128#ifdef EXT2_SYNC_FL
3129 if ( (*flags & EXT2_SYNC_FL) != 0 ) c_attr[2] = 'S';
3130#endif
3131#ifdef EXT2_IMMUTABLE_FL
3132 if ( (*flags & EXT2_IMMUTABLE_FL) != 0) c_attr[3] = 'i';
3133#endif
3134#ifdef EXT2_APPEND_FL
3135 if ( (*flags & EXT2_APPEND_FL) != 0 ) c_attr[4] = 'a';
3136#endif
3137#ifdef EXT2_NODUMP_FL
3138 if ( (*flags & EXT2_NODUMP_FL) != 0 ) c_attr[5] = 'd';
3139#endif
3140#ifdef EXT2_NOATIME_FL
3141 if ( (*flags & EXT2_NOATIME_FL) != 0) c_attr[6] = 'A';
3142#endif
3143#ifdef EXT2_COMPR_FL
3144 if ( (*flags & EXT2_COMPR_FL) != 0 ) c_attr[7] = 'c';
3145#endif
3146
3147#ifdef EXT2_TOPDIR_FL
3148 if ( (*flags & EXT2_TOPDIR_FL) != 0 ) c_attr[8] = 'T';
3149#endif
3150#ifdef EXT2_DIRSYNC_FL
3151 if ( (*flags & EXT2_DIRSYNC_FL) != 0 ) c_attr[9] = 'D';
3152#endif
3153#ifdef EXT2_NOTAIL_FL
3154 if ( (*flags & EXT2_NOTAIL_FL) != 0 ) c_attr[10] = 't';
3155#endif
3156#ifdef EXT2_JOURNAL_DATA_FL
3157 if ( (*flags & EXT2_JOURNAL_DATA_FL) != 0) c_attr[11] = 'j';
3158#endif
3159
3160 theend:
3161 /* ext2 */
3162#endif
3163
3164 c_attr[12] = '\0';
3165
3166 SL_RETURN(0, _("sh_unix_getinfo_attr"));
3167}
3168
3169/* defined(__linux__) || defined(HAVE_STAT_FLAGS) */
3170#endif
3171
3172/* determine file type
3173 */
3174static
3175int sh_unix_getinfo_type (struct stat * buf,
3176 ShFileType * type,
3177 char * c_mode)
3178{
3179 SL_ENTER(_("sh_unix_getinfo_type"));
3180
3181 if ( S_ISREG(buf->st_mode) ) {
3182 (*type) = SH_FILE_REGULAR;
3183 c_mode[0] = '-';
3184 }
3185 else if ( S_ISLNK(buf->st_mode) ) {
3186 (*type) = SH_FILE_SYMLINK;
3187 c_mode[0] = 'l';
3188 }
3189 else if ( S_ISDIR(buf->st_mode) ) {
3190 (*type) = SH_FILE_DIRECTORY;
3191 c_mode[0] = 'd';
3192 }
3193 else if ( S_ISCHR(buf->st_mode) ) {
3194 (*type) = SH_FILE_CDEV;
3195 c_mode[0] = 'c';
3196 }
3197 else if ( S_ISBLK(buf->st_mode) ) {
3198 (*type) = SH_FILE_BDEV;
3199 c_mode[0] = 'b';
3200 }
3201 else if ( S_ISFIFO(buf->st_mode) ) {
3202 (*type) = SH_FILE_FIFO;
3203 c_mode[0] = '|';
3204 }
3205 else if ( S_ISSOCK(buf->st_mode) ) {
3206 (*type) = SH_FILE_SOCKET;
3207 c_mode[0] = 's';
3208 }
3209 else if ( S_ISDOOR(buf->st_mode) ) {
3210 (*type) = SH_FILE_DOOR;
3211 c_mode[0] = 'D';
3212 }
3213 else if ( S_ISPORT(buf->st_mode) ) {
3214 (*type) = SH_FILE_PORT;
3215 c_mode[0] = 'P';
3216 }
3217 else {
3218 (*type) = SH_FILE_UNKNOWN;
3219 c_mode[0] = '?';
3220 }
3221
3222 SL_RETURN(0, _("sh_unix_getinfo_type"));
3223}
3224
3225int sh_unix_get_ftype(char * fullpath)
3226{
3227 char c_mode[CMODE_SIZE];
3228 struct stat buf;
3229 ShFileType type;
3230 int res;
3231
3232 SL_ENTER(_("sh_unix_get_ftype"));
3233
3234 res = retry_lstat(FIL__, __LINE__, fullpath, &buf);
3235
3236 if (res < 0)
3237 SL_RETURN(SH_FILE_UNKNOWN, _("sh_unix_getinfo_type"));
3238
3239 sh_unix_getinfo_type (&buf, &type, c_mode);
3240
3241 SL_RETURN(type, _("sh_unix_get_ftype"));
3242}
3243
3244
3245static
3246int sh_unix_getinfo_mode (struct stat *buf,
3247 unsigned int * mode,
3248 char * c_mode)
3249{
3250
3251 SL_ENTER(_("sh_unix_getinfo_mode"));
3252
3253 (*mode) = buf->st_mode;
3254
3255 /* make 'ls'-like string */
3256
3257 if ( (buf->st_mode & S_IRUSR) != 0 ) c_mode[1] = 'r';
3258 if ( (buf->st_mode & S_IWUSR) != 0 ) c_mode[2] = 'w';
3259 if ( (buf->st_mode & S_IXUSR) != 0 ) {
3260 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 's';
3261 else c_mode[3] = 'x';
3262 } else {
3263 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 'S';
3264 }
3265
3266 if ( (buf->st_mode & S_IRGRP) != 0 ) c_mode[4] = 'r';
3267 if ( (buf->st_mode & S_IWGRP) != 0 ) c_mode[5] = 'w';
3268 if ( (buf->st_mode & S_IXGRP) != 0 ) {
3269 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 's';
3270 else c_mode[6] = 'x';
3271 } else {
3272 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 'S';
3273 }
3274
3275 if ( (buf->st_mode & S_IROTH) != 0 ) c_mode[7] = 'r';
3276 if ( (buf->st_mode & S_IWOTH) != 0 ) c_mode[8] = 'w';
3277#ifdef S_ISVTX /* not POSIX */
3278 if ( (buf->st_mode & S_IXOTH) != 0 ) {
3279 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 't';
3280 else c_mode[9] = 'x';
3281 } else {
3282 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 'T';
3283 }
3284#else
3285 if ( (buf->st_mode & S_IXOTH) != 0 ) c_mode[9] = 'x';
3286#endif
3287
3288 SL_RETURN(0, _("sh_unix_getinfo_mode"));
3289}
3290
3291
3292long IO_Limit = 0;
3293
3294void sh_unix_io_pause ()
3295{
3296 long runtime;
3297 float someval;
3298 unsigned long sometime;
3299
3300 if (IO_Limit == 0)
3301 {
3302 return;
3303 }
3304 else
3305 {
3306 runtime = (long) (time(NULL) - sh.statistics.time_start);
3307
3308 if (runtime > 0 && (long)(sh.statistics.bytes_hashed/runtime) > IO_Limit)
3309 {
3310 someval = sh.statistics.bytes_hashed - (IO_Limit * runtime);
3311 someval /= (float) IO_Limit;
3312 if (someval < 1.0)
3313 {
3314 someval *= 1000; /* milliseconds in a second */
3315 sometime = (unsigned long) someval;
3316 retry_msleep(0, sometime);
3317 }
3318 else
3319 {
3320 sometime = (unsigned long) someval;
3321 retry_msleep (sometime, 0);
3322 }
3323 }
3324 }
3325 return;
3326}
3327
3328int sh_unix_set_io_limit (const char * c)
3329{
3330 long val;
3331
3332 SL_ENTER(_("sh_unix_set_io_limit"));
3333
3334 val = strtol (c, (char **)NULL, 10);
3335 if (val < 0)
3336 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
3337 _("set I/O limit"), c);
3338
3339 val = (val < 0 ? 0 : val);
3340
3341 IO_Limit = val * 1024;
3342 SL_RETURN( 0, _("sh_unix_set_io_limit"));
3343}
3344
3345/* obtain file info
3346 */
3347extern int flag_err_debug;
3348
3349#include "sh_ignore.h"
3350
3351int sh_unix_checksum_size (char * filename, struct stat * fbuf,
3352 char * fileHash, int alert_timeout, SL_TICKET fd)
3353{
3354 file_type * tmpFile;
3355 int status;
3356
3357 SL_ENTER(_("sh_unix_checksum_size"));
3358
3359 tmpFile = SH_ALLOC(sizeof(file_type));
3360 tmpFile->link_path = NULL;
3361
3362 if (sh.flag.checkSum != SH_CHECK_INIT)
3363 {
3364 /* lookup file in database */
3365 status = sh_hash_get_it (filename, tmpFile, NULL);
3366 if (status != 0) {
3367 goto out;
3368 }
3369 }
3370 else
3371 {
3372 tmpFile->size = fbuf->st_size;
3373 }
3374
3375 /* if last < current get checksum */
3376 if (tmpFile->size < fbuf->st_size)
3377 {
3378 char hashbuf[KEYBUF_SIZE];
3379 UINT64 local_length = (UINT64) (tmpFile->size < 0 ? 0 : tmpFile->size);
3380 sl_strlcpy(fileHash,
3381 sh_tiger_generic_hash (filename, fd, &(local_length),
3382 alert_timeout, hashbuf, sizeof(hashbuf)),
3383 KEY_LEN+1);
3384
3385 /* return */
3386 if (tmpFile->link_path) SH_FREE(tmpFile->link_path);
3387 SH_FREE(tmpFile);
3388 SL_RETURN( 0, _("sh_unix_checksum_size"));
3389 }
3390
3391 out:
3392 if (tmpFile->link_path) SH_FREE(tmpFile->link_path);
3393 SH_FREE(tmpFile);
3394 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3395 SL_RETURN( -1, _("sh_unix_checksum_size"));
3396}
3397
3398int sh_unix_check_selinux = S_FALSE;
3399int sh_unix_check_acl = S_FALSE;
3400
3401#ifdef USE_ACL
3402
3403#include <sys/acl.h>
3404static char * sh_unix_getinfo_acl (char * path, int fd, struct stat * buf)
3405{
3406 /* system.posix_acl_access, system.posix_acl_default
3407 */
3408 char * out = NULL;
3409 char * collect = NULL;
3410 char * tmp;
3411 char * out_compact;
3412 ssize_t len;
3413 acl_t result;
3414
3415 SL_ENTER(_("sh_unix_getinfo_acl"));
3416
3417 result = (fd == -1) ?
3418 acl_get_file (path, ACL_TYPE_ACCESS) :
3419 acl_get_fd (fd);
3420
3421 if (result)
3422 {
3423 out = acl_to_text (result, &len);
3424 if (out && (len > 0)) {
3425 out_compact = sh_util_acl_compact (out, len);
3426 acl_free(out);
3427 if (out_compact)
3428 {
3429 collect = sh_util_strconcat (_("acl_access:"), out_compact, NULL);
3430 SH_FREE(out_compact);
3431 }
3432 }
3433 acl_free(result);
3434 }
3435
3436
3437 if ( S_ISDIR(buf->st_mode) )
3438 {
3439 result = acl_get_file (path, ACL_TYPE_DEFAULT);
3440
3441 if (result)
3442 {
3443 out = acl_to_text (result, &len);
3444 if (out && (len > 0)) {
3445 out_compact = sh_util_acl_compact (out, len);
3446 acl_free(out);
3447 if (out_compact) {
3448 if (collect) {
3449 tmp = sh_util_strconcat (_("acl_default:"),
3450 out_compact, ":", collect, NULL);
3451 SH_FREE(collect);
3452 }
3453 else {
3454 tmp = sh_util_strconcat (_("acl_default:"), out_compact, NULL);
3455 }
3456 SH_FREE(out_compact);
3457 collect = tmp;
3458 }
3459 }
3460 acl_free(result);
3461 }
3462 }
3463
3464 SL_RETURN((collect),_("sh_unix_getinfo_acl"));
3465}
3466#endif
3467
3468#ifdef USE_XATTR
3469
3470#include <attr/xattr.h>
3471static char * sh_unix_getinfo_xattr_int (char * path, int fd, char * name)
3472{
3473 char * out = NULL;
3474 char * tmp = NULL;
3475 size_t size = 256;
3476 ssize_t result;
3477
3478 SL_ENTER(_("sh_unix_getinfo_xattr_int"));
3479
3480 out = SH_ALLOC(size);
3481
3482 result = (fd == -1) ?
3483 lgetxattr (path, name, out, size-1) :
3484 fgetxattr (fd, name, out, size-1);
3485
3486 if (result == -1 && errno == ERANGE)
3487 {
3488 SH_FREE(out);
3489 result = (fd == -1) ?
3490 lgetxattr (path, name, NULL, 0) :
3491 fgetxattr (fd, name, NULL, 0);
3492 size = result + 1;
3493 out = SH_ALLOC(size);
3494 result = (fd == -1) ?
3495 lgetxattr (path, name, out, size-1) :
3496 fgetxattr (fd, name, out, size-1);
3497 }
3498
3499 if ((result > 0) && ((size_t)result < size))
3500 {
3501 out[size-1] = '\0';
3502 tmp = out;
3503 }
3504 else
3505 {
3506 SH_FREE(out);
3507 }
3508
3509 SL_RETURN((tmp),_("sh_unix_getinfo_xattr_int"));
3510}
3511
3512
3513static char * sh_unix_getinfo_xattr (char * path, int fd, struct stat * buf)
3514{
3515 /* system.posix_acl_access, system.posix_acl_default, security.selinux
3516 */
3517 char * tmp;
3518 char * out = NULL;
3519 char * collect = NULL;
3520
3521 SL_ENTER(_("sh_unix_getinfo_xattr"));
3522
3523#ifdef USE_ACL
3524 /*
3525 * we need the acl_get_fd/acl_get_file functions, getxattr will only
3526 * yield the raw bytes
3527 */
3528 if (sh_unix_check_acl == S_TRUE)
3529 {
3530 out = sh_unix_getinfo_acl(path, fd, buf);
3531
3532 if (out)
3533 {
3534 collect = out;
3535 }
3536 }
3537#else
3538 (void) buf;
3539#endif
3540
3541 if (sh_unix_check_selinux == S_TRUE)
3542 {
3543 out = sh_unix_getinfo_xattr_int(path, fd, _("security.selinux"));
3544
3545 if (out)
3546 {
3547 if (collect) {
3548 tmp = sh_util_strconcat(_("selinux:"), out, ":", collect, NULL);
3549 SH_FREE(collect);
3550 }
3551 else {
3552 tmp = sh_util_strconcat(_("selinux:"), out, NULL);
3553 }
3554 SH_FREE(out);
3555 collect = tmp;
3556 }
3557 }
3558
3559 SL_RETURN((collect),_("sh_unix_getinfo_xattr"));
3560}
3561#endif
3562
3563#ifdef USE_XATTR
3564int sh_unix_setcheckselinux (const char * c)
3565{
3566 int i;
3567 SL_ENTER(_("sh_unix_setcheckselinux"));
3568 i = sh_util_flagval(c, &(sh_unix_check_selinux));
3569
3570 SL_RETURN(i, _("sh_unix_setcheckselinux"));
3571}
3572#endif
3573
3574#ifdef USE_ACL
3575int sh_unix_setcheckacl (const char * c)
3576{
3577 int i;
3578 SL_ENTER(_("sh_unix_setcheckacl"));
3579 i = sh_util_flagval(c, &(sh_unix_check_acl));
3580
3581 SL_RETURN(i, _("sh_unix_setcheckacl"));
3582}
3583#endif
3584
3585#ifdef HAVE_LIBZ
3586#include <zlib.h>
3587#endif
3588
3589int sh_unix_getinfo (int level, char * filename, file_type * theFile,
3590 char * fileHash, int policy)
3591{
3592 char timestr[81];
3593 long runtim;
3594 struct stat buf;
3595 struct stat lbuf;
3596 struct stat fbuf;
3597 int stat_return;
3598 int stat_errno = 0;
3599
3600 ShFileType type;
3601 unsigned int mode;
3602 char * tmp;
3603 char * tmp2;
3604
3605 char * linknamebuf;
3606 int linksize;
3607
3608 extern int get_the_fd (SL_TICKET ticket);
3609
3610 SL_TICKET rval_open;
3611 int err_open = 0;
3612
3613 int fd;
3614 int fstat_return;
3615 int fstat_errno = 0;
3616 int try = 0;
3617
3618 sh_string * content = NULL;
3619
3620 time_t tend;
3621 time_t tstart;
3622
3623
3624 char * path = NULL;
3625
3626 int alert_timeout = 120;
3627
3628 path = theFile->fullpath;
3629
3630 SL_ENTER(_("sh_unix_getinfo"));
3631
3632 /* --- Stat the file, and get checksum. ---
3633 */
3634 tstart = time(NULL);
3635
3636 stat_return = retry_lstat (FIL__, __LINE__,
3637 path /* theFile->fullpath */, &buf);
3638
3639 if (stat_return)
3640 stat_errno = errno;
3641
3642 theFile->link_path = NULL;
3643
3644 try_again:
3645
3646 fd = -1;
3647 fstat_return = -1;
3648 rval_open = -1;
3649
3650 if (stat_return == 0 && S_ISREG(buf.st_mode))
3651 {
3652 rval_open = sl_open_fastread (FIL__, __LINE__,
3653 path /* theFile->fullpath */, SL_YESPRIV);
3654 if (SL_ISERROR(rval_open))
3655 {
3656 char * stale = sl_check_stale();
3657
3658 if (stale)
3659 {
3660 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, err_open, MSG_E_SUBGEN,
3661 stale, _("sh_unix_getinfo_open"));
3662 }
3663
3664 if (errno == EBADF && try == 0) /* obsolete, but we keep this, just in case */
3665 {
3666 ++try;
3667 goto try_again;
3668 }
3669 err_open = errno;
3670 }
3671
3672 alert_timeout = 120; /* this is per 8K block now ! */
3673
3674 if (path[1] == 'p' && path[5] == '/' && path[2] == 'r' &&
3675 path[3] == 'o' && path[4] == 'c' && path[0] == '/')
3676 {
3677 /* seven is magic */
3678 alert_timeout = 7;
3679 }
3680
3681 fd = get_the_fd(rval_open);
3682 }
3683
3684 tend = time(NULL);
3685
3686 /* An unprivileged user may slow lstat/open to a crawl
3687 * with clever path/symlink setup
3688 */
3689 if ((tend - tstart) > (time_t) /* 60 */ 6)
3690 {
3691 tmp2 = sh_util_safe_name (theFile->fullpath);
3692 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_TOOLATE,
3693 (long)(tend - tstart), tmp2);
3694 SH_FREE(tmp2);
3695 }
3696
3697 if (fd >= 0)
3698 {
3699 fstat_return = retry_fstat (FIL__, __LINE__, fd, &fbuf);
3700
3701 if (fstat_return)
3702 {
3703 char * stale;
3704
3705 fstat_errno = errno;
3706
3707 stale = sl_check_stale();
3708
3709 if (stale)
3710 {
3711 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, fstat_errno,
3712 MSG_E_SUBGEN,
3713 stale, _("sh_unix_getinfo_fstat"));
3714 }
3715
3716 if (try == 0) /* obsolete, but we keep this, just in case */
3717 {
3718 ++try;
3719 sl_close(rval_open);
3720 goto try_again;
3721 }
3722 }
3723 }
3724 else
3725 {
3726 fd = -1;
3727 }
3728
3729
3730 /* --- case 1: lstat failed ---
3731 */
3732 if (stat_return != 0)
3733 {
3734 stat_return = errno;
3735 if (!SL_ISERROR(rval_open))
3736 sl_close(rval_open);
3737 if (sh.flag.checkSum == SH_CHECK_INIT ||
3738 (sh_hash_have_it (theFile->fullpath) >= 0 &&
3739 (!SH_FFLAG_REPORTED_SET(theFile->file_reported))))
3740 {
3741 if (S_FALSE == sh_ignore_chk_del(theFile->fullpath)) {
3742 char errbuf[SH_ERRBUF_SIZE];
3743 uid_t euid;
3744 (void) sl_get_euid(&euid);
3745 tmp2 = sh_util_safe_name (theFile->fullpath);
3746 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_STAT,
3747 _("lstat"),
3748 sh_error_message (stat_errno, errbuf, sizeof(errbuf)),
3749 (long) euid,
3750 tmp2);
3751 SH_FREE(tmp2);
3752 }
3753 }
3754 SL_RETURN((-1),_("sh_unix_getinfo"));
3755 }
3756
3757 /* --- case 2: not a regular file ---
3758 */
3759 else if (! S_ISREG(buf.st_mode))
3760 {
3761 if (fileHash != NULL)
3762 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3763 }
3764
3765 /* --- case 3a: a regular file, fstat ok ---
3766 */
3767 else if (fstat_return == 0 &&
3768 buf.st_mode == fbuf.st_mode &&
3769 buf.st_ino == fbuf.st_ino &&
3770 buf.st_uid == fbuf.st_uid &&
3771 buf.st_gid == fbuf.st_gid &&
3772 buf.st_dev == fbuf.st_dev )
3773 {
3774 if (fileHash != NULL)
3775 {
3776 if ((theFile->check_mask & MODI_CHK) == 0 ||
3777 sh_restrict_this(theFile->fullpath, (UINT64) fbuf.st_size,
3778 (UINT64) fbuf.st_mode, rval_open))
3779 {
3780 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3781 }
3782 else if ((theFile->check_mask & MODI_PREL) != 0 &&
3783 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
3784 alert_timeout, theFile->fullpath))
3785 {
3786 if (0 != sh_prelink_run (theFile->fullpath,
3787 fileHash, alert_timeout))
3788 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3789 }
3790 else
3791 {
3792 char hashbuf[KEYBUF_SIZE];
3793 UINT64 length_nolim = TIGER_NOLIM;
3794
3795 if (MODI_TXT_ENABLED(theFile->check_mask) && fbuf.st_size < (10 * SH_TXT_MAX))
3796 {
3797 sl_init_content (rval_open, fbuf.st_size);
3798 }
3799
3800 sl_strlcpy(fileHash,
3801 sh_tiger_generic_hash (theFile->fullpath,
3802 rval_open, &length_nolim,
3803 alert_timeout,
3804 hashbuf, sizeof(hashbuf)),
3805 KEY_LEN+1);
3806
3807 content = sl_get_content(rval_open);
3808 content = sh_string_copy(content);
3809
3810 if ((theFile->check_mask & MODI_SGROW) != 0)
3811 {
3812 fbuf.st_size = (off_t) length_nolim;
3813 buf.st_size = fbuf.st_size;
3814 sl_rewind(rval_open);
3815 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3816 &fileHash[KEY_LEN + 1],
3817 alert_timeout, rval_open);
3818 }
3819 }
3820 }
3821 }
3822
3823 /* --- case 3b: a regular file, fstat ok, but different ---
3824 */
3825 else if (fstat_return == 0 && S_ISREG(fbuf.st_mode))
3826 {
3827 memcpy (&buf, &fbuf, sizeof( struct stat ));
3828
3829 if (fileHash != NULL)
3830 {
3831 if ((theFile->check_mask & MODI_CHK) == 0 ||
3832 sh_restrict_this(theFile->fullpath, (UINT64) fbuf.st_size,
3833 (UINT64) fbuf.st_mode, rval_open))
3834 {
3835 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3836 }
3837 else if (policy == SH_LEVEL_PRELINK &&
3838 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
3839 alert_timeout, theFile->fullpath))
3840 {
3841 if (0 != sh_prelink_run (theFile->fullpath,
3842 fileHash, alert_timeout))
3843 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3844 }
3845 else
3846 {
3847 char hashbuf[KEYBUF_SIZE];
3848 UINT64 length_nolim = TIGER_NOLIM;
3849
3850 if (MODI_TXT_ENABLED(theFile->check_mask) && fbuf.st_size < (10 * SH_TXT_MAX))
3851 {
3852 sl_init_content (rval_open, fbuf.st_size);
3853 }
3854
3855 sl_strlcpy(fileHash,
3856 sh_tiger_generic_hash (theFile->fullpath, rval_open,
3857 &length_nolim,
3858 alert_timeout,
3859 hashbuf, sizeof(hashbuf)),
3860 KEY_LEN + 1);
3861
3862 content = sl_get_content(rval_open);
3863 content = sh_string_copy(content);
3864
3865 if ((theFile->check_mask & MODI_SGROW) != 0)
3866 {
3867 fbuf.st_size = (off_t) length_nolim;
3868 buf.st_size = fbuf.st_size;
3869 sl_rewind(rval_open);
3870 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3871 &fileHash[KEY_LEN + 1],
3872 alert_timeout, rval_open);
3873 }
3874 }
3875 }
3876 }
3877
3878 /* --- case 4: a regular file, fstat failed ---
3879 */
3880
3881 else /* fstat_return != 0 or !S_ISREG(fbuf.st_mode) or open() failed */
3882 {
3883 uid_t euid;
3884
3885 if (fileHash != NULL)
3886 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3887
3888 if ((theFile->check_mask & MODI_CHK) != 0)
3889 {
3890 tmp2 = sh_util_safe_name (theFile->fullpath);
3891
3892
3893 if (fd >= 0 && fstat_return != 0)
3894 {
3895 char errbuf[SH_ERRBUF_SIZE];
3896 (void) sl_get_euid(&euid);
3897
3898 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_STAT,
3899 _("fstat"),
3900 sh_error_message (fstat_errno, errbuf, sizeof(errbuf)),
3901 (long) euid,
3902 tmp2);
3903 }
3904 else if (fd >= 0 && !S_ISREG(fbuf.st_mode))
3905 {
3906 sh_error_handle (level, FIL__, __LINE__, fstat_errno,
3907 MSG_E_NOTREG, tmp2);
3908 }
3909 else
3910 {
3911 char errbuf[SH_ERRBUF_SIZE];
3912 char errbuf2[SH_ERRBUF_SIZE];
3913 sl_strlcpy(errbuf, sl_error_string(rval_open), sizeof(errbuf));
3914 sh_error_message(err_open, errbuf2, sizeof(errbuf2));
3915 sh_error_handle (level, FIL__, __LINE__, err_open,
3916 MSG_E_READ, errbuf, errbuf2, tmp2);
3917 }
3918 SH_FREE(tmp2);
3919 }
3920 }
3921
3922
3923 /* --- Determine file type. ---
3924 */
3925 memset (theFile->c_mode, '-', CMODE_SIZE-1);
3926 theFile->c_mode[CMODE_SIZE-1] = '\0';
3927
3928 memset (theFile->link_c_mode, '-', CMODE_SIZE-1);
3929 theFile->link_c_mode[CMODE_SIZE-1] = '\0';
3930
3931 sh_unix_getinfo_type (&buf, &type, theFile->c_mode);
3932 theFile->type = type;
3933
3934#if defined(__linux__) || defined(HAVE_STAT_FLAGS)
3935
3936 /* --- Determine file attributes. ---
3937 */
3938 memset (theFile->c_attributes, '-', ATTRBUF_SIZE);
3939 theFile->c_attributes[ATTRBUF_USED] = '\0';
3940 theFile->attributes = 0;
3941
3942#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
3943 if (theFile->c_mode[0] != 'c' && theFile->c_mode[0] != 'b' &&
3944 theFile->c_mode[0] != 'l' )
3945 sh_unix_getinfo_attr(theFile->fullpath,
3946 &theFile->attributes, theFile->c_attributes,
3947 fd, &buf);
3948#endif
3949#endif
3950
3951#if defined(USE_XATTR) && defined(USE_ACL)
3952 if (sh_unix_check_selinux == S_TRUE || sh_unix_check_acl == S_TRUE)
3953 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3954#elif defined(USE_XATTR)
3955 if (sh_unix_check_selinux == S_TRUE)
3956 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3957#elif defined(USE_ACL)
3958 if (sh_unix_check_acl == S_TRUE)
3959 theFile->attr_string = sh_unix_getinfo_acl (theFile->fullpath, fd, &buf);
3960#else
3961 theFile->attr_string = NULL;
3962#endif
3963
3964 if (!SL_ISERROR(rval_open))
3965 sl_close(rval_open);
3966
3967
3968 /* --- I/O limit. ---
3969 */
3970 if (IO_Limit > 0)
3971 {
3972 runtim = (long) (time(NULL) - sh.statistics.time_start);
3973
3974 if (runtim > 0 && (long)(sh.statistics.bytes_hashed/runtim) > IO_Limit)
3975 retry_msleep(1, 0);
3976 }
3977
3978 /* --- Determine permissions. ---
3979 */
3980 sh_unix_getinfo_mode (&buf, &mode, theFile->c_mode);
3981
3982 /* --- Trivia. ---
3983 */
3984 theFile->dev = buf.st_dev;
3985 theFile->ino = buf.st_ino;
3986 theFile->mode = buf.st_mode;
3987 theFile->hardlinks = buf.st_nlink;
3988 theFile->owner = buf.st_uid;
3989 theFile->group = buf.st_gid;
3990 theFile->rdev = buf.st_rdev;
3991 theFile->size = buf.st_size;
3992 theFile->blksize = (unsigned long) buf.st_blksize;
3993 theFile->blocks = (unsigned long) buf.st_blocks;
3994 theFile->atime = buf.st_atime;
3995 theFile->mtime = buf.st_mtime;
3996 theFile->ctime = buf.st_ctime;
3997
3998
3999 /* --- Owner and group. ---
4000 */
4001
4002 if (NULL == sh_unix_getGIDname(SH_ERR_ALL, buf.st_gid, theFile->c_group, GROUP_MAX+1)) {
4003
4004 tmp2 = sh_util_safe_name (theFile->fullpath);
4005
4006 if (policy == SH_LEVEL_ALLIGNORE)
4007 {
4008 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
4009 MSG_FI_NOGRP,
4010 (long) buf.st_gid, tmp2);
4011 }
4012 else
4013 {
4014 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
4015 MSG_FI_NOGRP,
4016 (long) buf.st_gid, tmp2);
4017 }
4018 SH_FREE(tmp2);
4019 sl_snprintf(theFile->c_group, GROUP_MAX+1, "%d", (long) buf.st_gid);
4020 }
4021
4022
4023 if (NULL == sh_unix_getUIDname(SH_ERR_ALL, buf.st_uid, theFile->c_owner, USER_MAX+1)) {
4024
4025 tmp2 = sh_util_safe_name (theFile->fullpath);
4026
4027 if (policy == SH_LEVEL_ALLIGNORE)
4028 {
4029 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
4030 MSG_FI_NOUSR,
4031 (long) buf.st_uid, tmp2);
4032 }
4033 else
4034 {
4035 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
4036 MSG_FI_NOUSR,
4037 (long) buf.st_uid, tmp2);
4038 }
4039 SH_FREE(tmp2);
4040 sl_snprintf(theFile->c_owner, USER_MAX+1, "%d", (long) buf.st_uid);
4041 }
4042
4043 /* --- Output the file. ---
4044 */
4045 if (flag_err_debug == SL_TRUE)
4046 {
4047 tmp2 = sh_util_safe_name ((filename == NULL) ?
4048 theFile->fullpath : filename);
4049 (void) sh_unix_time(theFile->mtime, timestr, sizeof(timestr));
4050 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LIST,
4051 theFile->c_mode,
4052 theFile->hardlinks,
4053 theFile->c_owner,
4054 theFile->c_group,
4055 (unsigned long) theFile->size,
4056 timestr,
4057 tmp2);
4058 SH_FREE(tmp2);
4059 }
4060
4061 /* --- Check for links. ---
4062 */
4063 if (theFile->c_mode[0] == 'l')
4064 {
4065 linknamebuf = SH_ALLOC(PATH_MAX);
4066
4067 /* flawfinder: ignore */
4068 linksize = readlink (theFile->fullpath, linknamebuf, PATH_MAX-1);
4069
4070 if (linksize < (PATH_MAX-1) && linksize >= 0)
4071 linknamebuf[linksize] = '\0';
4072 else
4073 linknamebuf[PATH_MAX-1] = '\0';
4074
4075 if (linksize < 0)
4076 {
4077 char errbuf[SH_ERRBUF_SIZE];
4078 linksize = errno;
4079 tmp2 = sh_util_safe_name (theFile->fullpath);
4080 sh_error_handle (level, FIL__, __LINE__, linksize, MSG_FI_RDLNK,
4081 sh_error_message (linksize, errbuf, sizeof(errbuf)), tmp2);
4082 SH_FREE(tmp2);
4083 SH_FREE(linknamebuf);
4084 theFile->link_path = sh_util_strdup("-");
4085 SL_RETURN((-1),_("sh_unix_getinfo"));
4086 }
4087
4088 if (linknamebuf[0] == '/')
4089 {
4090 theFile->link_path = sh_util_strdup (linknamebuf);
4091 }
4092 else
4093 {
4094 tmp = sh_util_dirname(theFile->fullpath);
4095 if (tmp) {
4096 theFile->link_path = SH_ALLOC(PATH_MAX);
4097 sl_strlcpy (theFile->link_path, tmp, PATH_MAX);
4098 SH_FREE(tmp);
4099 } else {
4100 theFile->link_path = SH_ALLOC(PATH_MAX);
4101 theFile->link_path[0] = '\0';
4102 }
4103 /*
4104 * Only attach '/' if not root directory. Handle "//", which
4105 * according to POSIX is implementation-defined, and may be
4106 * different from "/" (however, three or more '/' will collapse
4107 * to one).
4108 */
4109 tmp = theFile->link_path; while (*tmp == '/') ++tmp;
4110 if (*tmp != '\0')
4111 {
4112 sl_strlcat (theFile->link_path, "/", PATH_MAX);
4113 }
4114 sl_strlcat (theFile->link_path, linknamebuf, PATH_MAX);
4115 }
4116
4117 /* stat the link
4118 */
4119 stat_return = retry_lstat (FIL__, __LINE__, theFile->link_path, &lbuf);
4120
4121 /* check for error
4122 */
4123 if (stat_return != 0)
4124 {
4125 stat_return = errno;
4126 tmp = sh_util_safe_name (theFile->fullpath);
4127 tmp2 = sh_util_safe_name (theFile->link_path);
4128 if (stat_return != ENOENT)
4129 {
4130 uid_t euid;
4131 char errbuf[SH_ERRBUF_SIZE];
4132
4133 (void) sl_get_euid(&euid);
4134 sh_error_handle (level, FIL__, __LINE__, stat_return,
4135 MSG_FI_STAT,
4136 _("lstat"),
4137 sh_error_message (stat_return,errbuf, sizeof(errbuf)),
4138 (long) euid,
4139 tmp2);
4140 }
4141 else
4142 {
4143 /* a dangling link -- everybody seems to have plenty of them
4144 */
4145 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_DLNK,
4146 tmp, tmp2);
4147 }
4148 theFile->linkisok = BAD;
4149 SH_FREE(tmp);
4150 SH_FREE(tmp2);
4151 SH_FREE(linknamebuf);
4152 /*
4153 * changed Tue Feb 10 16:16:13 CET 2004:
4154 * add dangling symlinks into database
4155 * SL_RETURN((-1),_("sh_unix_getinfo"));
4156 */
4157 theFile->linkmode = 0;
4158 SL_RETURN((0),_("sh_unix_getinfo"));
4159 }
4160
4161 theFile->linkisok = GOOD;
4162
4163
4164 /* --- Determine file type. ---
4165 */
4166 sh_unix_getinfo_type (&lbuf, &type, theFile->link_c_mode);
4167 theFile->type = type;
4168
4169 /* --- Determine permissions. ---
4170 */
4171 sh_unix_getinfo_mode (&lbuf, &mode, theFile->link_c_mode);
4172 theFile->linkmode = lbuf.st_mode;
4173
4174 /* --- Output the link. ---
4175 */
4176 if (theFile->linkisok == GOOD)
4177 {
4178 tmp2 = sh_util_safe_name (linknamebuf);
4179 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LLNK,
4180 theFile->link_c_mode, tmp2);
4181 SH_FREE(tmp2);
4182 }
4183 SH_FREE(linknamebuf);
4184 }
4185 else /* not a link */
4186 {
4187 if (content)
4188 {
4189#ifdef HAVE_LIBZ
4190 unsigned long clen;
4191 unsigned char * compressed;
4192#ifdef HAVE_COMPRESSBOUND
4193 clen = compressBound(sh_string_len(content));
4194#else
4195 if (sh_string_len(content) > 10*SH_TXT_MAX)
4196 clen = SH_TXT_MAX;
4197 else
4198 clen = 13 + (int)(1.0001*sh_string_len(content));
4199#endif
4200 compressed = SH_ALLOC(clen);
4201 if (Z_OK == compress(compressed, &clen,
4202 (unsigned char *) sh_string_str(content),
4203 sh_string_len(content)))
4204 {
4205 if (clen < SH_TXT_MAX)
4206 {
4207 sh_util_base64_enc_alloc (&(theFile->link_path),
4208 (char *) compressed, clen);
4209 }
4210 else
4211 {
4212 char tmsg[128];
4213 char * tpath = sh_util_safe_name (theFile->fullpath);
4214 sl_snprintf(tmsg, sizeof(tmsg),
4215 _("compressed file too large (%lu bytes)"),
4216 clen);
4217 sh_error_handle (SH_ERR_WARN, FIL__, __LINE__, -1,
4218 MSG_E_SUBGPATH, tmsg,
4219 _("sh_unix_getinfo"), tpath);
4220 SH_FREE(tpath);
4221 }
4222 }
4223 SH_FREE(compressed);
4224#endif
4225 sh_string_destroy(&content);
4226 }
4227 }
4228 SL_RETURN((0),_("sh_unix_getinfo"));
4229}
4230
4231/* #if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE) */
4232#endif
4233
4234int sh_unix_unlock(char * lockfile, char * flag)
4235{
4236 int error = 0;
4237
4238 SL_ENTER(_("sh_unix_unlock"));
4239
4240 if (sh.flag.isdaemon == S_FALSE && flag == NULL)
4241 SL_RETURN((0),_("sh_unix_unlock"));
4242
4243 /* --- Logfile is not locked to us. ---
4244 */
4245 if (sh.flag.islocked == BAD && flag != NULL)
4246 SL_RETURN((-1),_("sh_unix_unlock"));
4247
4248 /* --- Check whether the directory is secure. ---
4249 */
4250 if (0 != tf_trust_check (lockfile, SL_YESPRIV))
4251 SL_RETURN((-1),_("sh_unix_unlock"));
4252
4253 /* --- Delete the lock file. ---
4254 */
4255 error = retry_aud_unlink (FIL__, __LINE__, lockfile);
4256
4257 if (error == 0)
4258 {
4259 if (flag != NULL)
4260 sh.flag.islocked = BAD; /* not locked anymore */
4261 }
4262 else if (flag != NULL)
4263 {
4264 char errbuf[SH_ERRBUF_SIZE];
4265 error = errno;
4266 sh_error_handle ((-1), FIL__, __LINE__, error, MSG_E_UNLNK,
4267 sh_error_message(error, errbuf, sizeof(errbuf)),
4268 lockfile);
4269 SL_RETURN((-1),_("sh_unix_unlock"));
4270 }
4271 SL_RETURN((0),_("sh_unix_unlock"));
4272}
4273
4274int sh_unix_check_piddir (char * pidpath)
4275{
4276 static struct stat buf;
4277 int status = 0;
4278 char * pid_dir;
4279
4280 SL_ENTER(_("sh_unix_check_piddir"));
4281
4282 pid_dir = sh_util_dirname (pidpath);
4283
4284 status = retry_lstat (FIL__, __LINE__, pid_dir, &buf);
4285
4286 if (status < 0 && errno == ENOENT)
4287 {
4288 status = mkdir (pid_dir, 0777);
4289 if (status < 0)
4290 {
4291 sh_error_handle ((-1), FIL__, __LINE__, status,
4292 MSG_E_SUBGEN,
4293 _("Cannot create PID directory"),
4294 _("sh_unix_check_piddir"));
4295 SH_FREE(pid_dir);
4296 SL_RETURN((-1),_("sh_unix_check_piddir"));
4297 }
4298 }
4299 else if (!S_ISDIR(buf.st_mode))
4300 {
4301 sh_error_handle ((-1), FIL__, __LINE__, status,
4302 MSG_E_SUBGEN,
4303 _("Path of PID directory refers to a non-directory object"),
4304 _("sh_unix_check_piddir"));
4305 SH_FREE(pid_dir);
4306 SL_RETURN((-1),_("sh_unix_check_piddir"));
4307 }
4308 SH_FREE(pid_dir);
4309 SL_RETURN((0),_("sh_unix_check_piddir"));
4310}
4311
4312int sh_unix_lock (char * lockfile, char * flag)
4313{
4314 int filed;
4315 int errnum;
4316 char myPid[64];
4317 SL_TICKET fd;
4318 extern int get_the_fd (SL_TICKET ticket);
4319
4320 SL_ENTER(_("sh_unix_lock"));
4321
4322 sprintf (myPid, "%ld\n", (long) sh.pid); /* known to fit */
4323
4324 if (flag == NULL) /* PID file, check for directory */
4325 {
4326 if (0 != sh_unix_check_piddir (lockfile))
4327 {
4328 SL_RETURN((-1),_("sh_unix_lock"));
4329 }
4330 }
4331
4332 fd = sl_open_safe_rdwr (FIL__, __LINE__,
4333 lockfile, SL_YESPRIV); /* fails if file exists */
4334
4335 if (!SL_ISERROR(fd))
4336 {
4337 errnum = sl_write (fd, myPid, sl_strlen(myPid));
4338 filed = get_the_fd(fd);
4339 fchmod (filed, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
4340 sl_close (fd);
4341
4342 if (!SL_ISERROR(errnum))
4343 {
4344 if (flag != NULL)
4345 sh.flag.islocked = GOOD;
4346 SL_RETURN((0),_("sh_unix_lock"));
4347 }
4348 }
4349
4350 TPT((0, FIL__, __LINE__, _("msg=<open pid file failed>\n")));
4351 if (flag != NULL)
4352 sh.flag.islocked = BAD;
4353 SL_RETURN((-1),_("sh_unix_lock"));
4354
4355 /* notreached */
4356}
4357
4358
4359/* check whether file is locked
4360 */
4361int sh_unix_test_and_lock (char * filename, char * lockfile)
4362{
4363 static struct stat buf;
4364 int status = 0;
4365
4366
4367 SL_TICKET fd;
4368 char line_in[128];
4369
4370 SL_ENTER(_("sh_unix_test_and_lock"));
4371
4372 status = retry_lstat (FIL__, __LINE__, lockfile, &buf);
4373
4374 /* --- No lock file found, try to lock. ---
4375 */
4376
4377 if (status < 0 && errno == ENOENT)
4378 {
4379 if (0 == sh_unix_lock (lockfile, filename))
4380 {
4381 if (filename != NULL)
4382 sh.flag.islocked = GOOD;
4383 SL_RETURN((0),_("sh_unix_test_and_lock"));
4384 }
4385 else
4386 {
4387 sh_error_handle ((-1), FIL__, __LINE__, status,
4388 MSG_E_SUBGEN,
4389 (filename == NULL) ? _("Cannot create PID file (1)") : _("Cannot create lock file (1)"),
4390 _("sh_unix_test_and_lock"));
4391 SL_RETURN((-1),_("sh_unix_test_and_lock"));
4392 }
4393 }
4394 else if (status == 0 && buf.st_size == 0)
4395 {
4396 if (filename != NULL)
4397 sh.flag.islocked = GOOD;
4398 sh_unix_unlock (lockfile, filename);
4399 if (filename != NULL)
4400 sh.flag.islocked = BAD;
4401 if (0 == sh_unix_lock (lockfile, filename))
4402 {
4403 if (filename != NULL)
4404 sh.flag.islocked = GOOD;
4405 SL_RETURN((0),_("sh_unix_test_and_lock"));
4406 }
4407 else
4408 {
4409 sh_error_handle ((-1), FIL__, __LINE__, status,
4410 MSG_E_SUBGEN,
4411 (filename == NULL) ? _("Cannot create PID file (2)") : _("Cannot create lock file (2)"),
4412 _("sh_unix_test_and_lock"));
4413 SL_RETURN((-1),_("sh_unix_test_and_lock"));
4414 }
4415 }
4416
4417 /* --- Check on lock. ---
4418 */
4419
4420 if (status >= 0)
4421 {
4422 fd = sl_open_read (FIL__, __LINE__, lockfile, SL_YESPRIV);
4423 if (SL_ISERROR(fd))
4424 sh_error_handle ((-1), FIL__, __LINE__, fd,
4425 MSG_E_SUBGEN,
4426 (filename == NULL) ? _("Cannot open PID file for read") : _("Cannot open lock file for read"),
4427 _("sh_unix_test_and_lock"));
4428 }
4429 else
4430 fd = -1;
4431
4432 if (!SL_ISERROR(fd))
4433 {
4434 /* read the PID in the lock file
4435 */
4436 status = sl_read (fd, line_in, sizeof(line_in));
4437 line_in[sizeof(line_in)-1] = '\0';
4438
4439 /* convert to numeric
4440 */
4441 if (status > 0)
4442 {
4443 errno = 0;
4444 status = strtol(line_in, (char **)NULL, 10);
4445 if (errno == ERANGE || status <= 0)
4446 {
4447 sh_error_handle ((-1), FIL__, __LINE__, status,
4448 MSG_E_SUBGEN,
4449 (filename == NULL) ? _("Bad PID in PID file") : _("Bad PID in lock file"),
4450 _("sh_unix_test_and_lock"));
4451
4452 status = -1;
4453 }
4454 }
4455 else
4456 {
4457 sh_error_handle ((-1), FIL__, __LINE__, status,
4458 MSG_E_SUBGEN,
4459 (filename == NULL) ? _("Cannot read PID file") : _("Cannot read lock file"),
4460 _("sh_unix_test_and_lock"));
4461 }
4462 sl_close(fd);
4463
4464 if (status > 0 && (unsigned int) status == sh.pid)
4465 {
4466 if (filename != NULL)
4467 sh.flag.islocked = GOOD;
4468 SL_RETURN((0),_("sh_unix_test_and_lock"));
4469 }
4470
4471
4472 /* --- Check whether the process exists. ---
4473 */
4474 if (status > 0)
4475 {
4476 errno = 0;
4477 status = aud_kill (FIL__, __LINE__, status, 0);
4478
4479 /* Does not exist, so remove the stale lock
4480 * and create a new one.
4481 */
4482 if (status < 0 && errno == ESRCH)
4483 {
4484 if (filename != NULL)
4485 sh.flag.islocked = GOOD;
4486 if (0 != sh_unix_unlock(lockfile, filename) && (filename !=NULL))
4487 sh.flag.islocked = BAD;
4488 else
4489 {
4490 if (0 == sh_unix_lock (lockfile, filename))
4491 {
4492 if (filename != NULL)
4493 sh.flag.islocked = GOOD;
4494 SL_RETURN((0),_("sh_unix_test_and_lock"));
4495 }
4496 else
4497 {
4498 sh_error_handle ((-1), FIL__, __LINE__, status,
4499 MSG_E_SUBGEN,
4500 (filename == NULL) ? _("Cannot create PID file (3)") : _("Cannot create lock file (3)"),
4501 _("sh_unix_test_and_lock"));
4502 }
4503 if (filename != NULL)
4504 sh.flag.islocked = BAD;
4505 }
4506 }
4507 else
4508 {
4509 sh_error_handle ((-1), FIL__, __LINE__, status,
4510 MSG_E_SUBGEN,
4511 (filename == NULL) ? _("Cannot remove stale PID file, PID may be a running process") : _("Cannot remove stale lock file, PID may be a running process"),
4512 _("sh_unix_test_and_lock"));
4513 if (filename != NULL)
4514 sh.flag.islocked = BAD;
4515 }
4516 }
4517 }
4518 SL_RETURN((-1),_("sh_unix_testlock"));
4519}
4520
4521/* write the PID file
4522 */
4523int sh_unix_write_pid_file()
4524{
4525 return sh_unix_test_and_lock(NULL, sh.srvlog.alt);
4526}
4527
4528/* write lock for filename
4529 */
4530int sh_unix_write_lock_file(char * filename)
4531{
4532 size_t len;
4533 int res;
4534 char * lockfile;
4535
4536 if (filename == NULL)
4537 return (-1);
4538
4539 len = sl_strlen(filename);
4540 if (sl_ok_adds(len, 6))
4541 len += 6;
4542 lockfile = SH_ALLOC(len);
4543 sl_strlcpy(lockfile, filename, len);
4544 sl_strlcat(lockfile, _(".lock"), len);
4545 res = sh_unix_test_and_lock(filename, lockfile);
4546 SH_FREE(lockfile);
4547 return res;
4548}
4549
4550/* rm lock for filename
4551 */
4552int sh_unix_rm_lock_file(char * filename)
4553{
4554 size_t len;
4555 int res;
4556 char * lockfile;
4557
4558 if (filename == NULL)
4559 return (-1);
4560
4561 len = sl_strlen(filename);
4562 if (sl_ok_adds(len, 6))
4563 len += 6;
4564 lockfile = SH_ALLOC(len);
4565 sl_strlcpy(lockfile, filename, len);
4566 sl_strlcat(lockfile, _(".lock"), len);
4567
4568 res = sh_unix_unlock(lockfile, filename);
4569 SH_FREE(lockfile);
4570 return res;
4571}
4572
4573/* rm lock for filename
4574 */
4575int sh_unix_rm_pid_file()
4576{
4577 return sh_unix_unlock(sh.srvlog.alt, NULL);
4578}
4579
4580/* Test whether file exists
4581 */
4582int sh_unix_file_exists(char * path)
4583{
4584 struct stat buf;
4585
4586 SL_ENTER(_("sh_unix_file_exists"));
4587
4588 if (0 == retry_lstat(FIL__, __LINE__, path, &buf))
4589 SL_RETURN( S_TRUE, _("sh_unix_file_exists"));
4590 else
4591 SL_RETURN( S_FALSE, _("sh_unix_file_exists"));
4592}
4593
4594
4595/* Test whether file exists, is a character device, and allows read
4596 * access.
4597 */
4598int sh_unix_device_readable(int fd)
4599{
4600 struct stat buf;
4601
4602 SL_ENTER(_("sh_unix_device_readable"));
4603
4604 if (retry_fstat(FIL__, __LINE__, fd, &buf) == -1)
4605 SL_RETURN( (-1), _("sh_unix_device_readable"));
4606 else if ( S_ISCHR(buf.st_mode) && 0 != (S_IROTH & buf.st_mode) )
4607 SL_RETURN( (0), _("sh_unix_device_readable"));
4608 else
4609 SL_RETURN( (-1), _("sh_unix_device_readable"));
4610}
4611
4612static char preq[16];
4613
4614/* return true if database is remote
4615 */
4616int file_is_remote ()
4617{
4618 static int init = 0;
4619 struct stat buf;
4620
4621 SL_ENTER(_("file_is_remote"));
4622
4623 if (init == 0)
4624 {
4625 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4626 ++init;
4627 }
4628 if (0 == sl_strncmp (sh.data.path, preq, 15))
4629 {
4630 if (sh.data.path[15] != '\0') /* should be start of path */
4631 {
4632 if (0 == stat(&(sh.data.path[15]), &buf))
4633 {
4634 SL_RETURN( S_FALSE, _("file_is_remote"));
4635 }
4636 }
4637 SL_RETURN( S_TRUE, _("file_is_remote"));
4638 }
4639 SL_RETURN( S_FALSE, _("file_is_remote"));
4640}
4641
4642/* Return the path to the configuration/database file.
4643 */
4644char * file_path(char what, char flag)
4645{
4646 static int init = 0;
4647
4648 SL_ENTER(_("file_path"));
4649
4650 if (init == 0)
4651 {
4652 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4653 ++init;
4654 }
4655
4656 switch (what)
4657 {
4658
4659 case 'C':
4660 if (0 == sl_strncmp (sh.conf.path, preq, 15))
4661 {
4662#if defined(SH_WITH_SERVER)
4663 if (sh.flag.isserver == S_TRUE && sl_strlen(sh.conf.path) == 15)
4664 SL_RETURN( NULL, _("file_path"));
4665 if (sh.flag.isserver == S_TRUE)
4666 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4667#endif
4668 if (flag == 'R')
4669 SL_RETURN( preq, _("file_path"));
4670 if (flag == 'I')
4671 {
4672 if (sl_strlen(sh.conf.path) == 15)
4673 SL_RETURN( NULL, _("file_path"));
4674 else
4675 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4676 }
4677 SL_RETURN ( preq, _("file_path"));
4678 }
4679 else
4680 SL_RETURN( sh.conf.path, _("file_path"));
4681 /* break; *//* unreachable */
4682
4683 case 'D':
4684 if (0 == sl_strncmp (sh.data.path, preq, 15))
4685 {
4686 if (flag == 'R')
4687 SL_RETURN( preq, _("file_path"));
4688 if (flag == 'W' && sl_strlen(sh.data.path) == 15)
4689 SL_RETURN (NULL, _("file_path"));
4690 if (flag == 'W')
4691 SL_RETURN( &(sh.data.path[15]), _("file_path"));
4692 }
4693 else
4694 SL_RETURN( sh.data.path, _("file_path"));
4695 break;
4696
4697 default:
4698 SL_RETURN( NULL, _("file_path"));
4699 }
4700
4701 return NULL; /* notreached */
4702}
4703/************************************************/
4704/**** Mlock Utilities ****/
4705/************************************************/
4706
4707#include <limits.h>
4708
4709int sh_unix_pagesize()
4710{
4711 int pagesize = 4096;
4712#if defined(_SC_PAGESIZE)
4713 pagesize = sysconf(_SC_PAGESIZE);
4714#elif defined(_SC_PAGE_SIZE)
4715 pagesize = sysconf(_SC_PAGE_SIZE);
4716#elif defined(HAVE_GETPAGESIZE)
4717 pagesize = getpagesize();
4718#elif defined(PAGESIZE)
4719 pagesize = PAGESIZE;
4720#endif
4721
4722 return ((pagesize > 0) ? pagesize : 4096);
4723}
4724
4725typedef struct sh_page_lt {
4726 unsigned long page_start;
4727 int page_refcount;
4728 char file[64];
4729 int line;
4730 struct sh_page_lt * next;
4731} sh_page_l;
4732
4733sh_page_l * sh_page_locked = NULL;
4734volatile int page_locking = 0;
4735
4736unsigned long sh_unix_lookup_page (void * in_addr, size_t len, int * num_pages)
4737{
4738 int pagesize = sh_unix_pagesize();
4739 unsigned long addr = (unsigned long) in_addr;
4740
4741 unsigned long pagebase;
4742 unsigned long pagediff;
4743 unsigned long pagenum = addr / pagesize;
4744
4745 SL_ENTER(_("sh_unix_lookup_page"));
4746#if 0
4747 fprintf(stderr, "mlock: --> base %ld, pagenum: %ld\n",
4748 addr, pagenum);
4749#endif
4750
4751 /* address of first page
4752 */
4753 pagebase = pagenum * pagesize;
4754
4755 /* number of pages
4756 */
4757 pagediff = (addr + len) - pagebase;
4758 pagenum = pagediff / pagesize;
4759 if (pagenum * pagesize < pagediff)
4760 ++pagenum;
4761
4762#if 0
4763 fprintf(stderr, "mlock: --> pagebase %ld, pagediff %ld, (addr + len) %ld\n",
4764 pagebase, pagediff, (addr + len));
4765#endif
4766
4767 *num_pages = pagenum;
4768 SL_RETURN((pagebase), _("sh_unix_lookup_page"));
4769}
4770
4771
4772#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4773
4774SH_MUTEX_STATIC(mutex_mlock,PTHREAD_MUTEX_INITIALIZER);
4775
4776int sh_unix_mlock (const char * file, int line, void * in_addr, size_t len)
4777{
4778 int num_pages;
4779 int status = 0;
4780 int pagesize;
4781 sh_page_l * page_list;
4782 unsigned long addr;
4783#ifdef TEST_MLOCK
4784 int i = 0;
4785#endif
4786
4787 SL_ENTER(_("sh_unix_mlock"));
4788
4789 /* There's no cancellation point here, except if tracing is on
4790 */
4791 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4792
4793 page_list = sh_page_locked;
4794
4795 if (0 != page_locking)
4796 {
4797 status = -1;
4798 goto exit_mlock;
4799 }
4800
4801 page_locking = 1;
4802
4803 pagesize = sh_unix_pagesize();
4804 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4805
4806#ifdef TEST_MLOCK
4807 fprintf(stderr, "mlock: addr %ld, base %ld, pages: %d, length %d\n",
4808 (unsigned long) in_addr, addr, num_pages, len);
4809#endif
4810
4811 /* increase refcount of locked pages
4812 * addr is first page; num_pages is #(consecutive pages) to lock
4813 */
4814
4815 while ((page_list != NULL) && (num_pages > 0))
4816 {
4817#ifdef TEST_MLOCK
4818 fprintf(stderr, "mlock: check page %d: %ld [%d]\n",
4819 i, page_list->page_start, page_list->page_refcount);
4820#endif
4821 if (page_list->page_start == addr)
4822 {
4823 page_list->page_refcount += 1;
4824 num_pages -= 1;
4825 addr += pagesize;
4826#ifdef TEST_MLOCK
4827 fprintf(stderr, "mlock: found page %d: %ld [%d], next page %ld\n",
4828 i, page_list->page_start, page_list->page_refcount, addr);
4829#endif
4830 }
4831#ifdef TEST_MLOCK
4832 ++i;
4833#endif
4834 page_list = page_list->next;
4835 }
4836
4837 /* mlock some more pages, if needed
4838 */
4839 while (num_pages > 0)
4840 {
4841#ifdef TEST_MLOCK
4842 fprintf(stderr, "mlock: lock page %d: mlock %ld [num_pages %d]\n",
4843 i, addr, num_pages);
4844 ++i;
4845#endif
4846 page_list = SH_ALLOC(sizeof(sh_page_l));
4847 page_list->page_start = addr;
4848 page_list->page_refcount = 1;
4849 sl_strlcpy(page_list->file, file, 64);
4850 page_list->line = line;
4851 status = mlock( (void *) addr, pagesize);
4852 if (status != 0)
4853 {
4854#ifdef TEST_MLOCK
4855 char errbuf[SH_ERRBUF_SIZE];
4856 fprintf(stderr, "mlock: error: %s\n",
4857 sh_error_message(errno, errbuf, sizeof(errbuf)));
4858#endif
4859 SH_FREE(page_list);
4860 page_locking = 0;
4861 goto exit_mlock;
4862 }
4863 page_list->next = sh_page_locked;
4864 sh_page_locked = page_list;
4865 num_pages -= 1;
4866 addr += pagesize;
4867 }
4868 page_locking = 0;
4869
4870 exit_mlock:
4871 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
4872
4873 SL_RETURN((status), _("sh_unix_mlock"));
4874}
4875#else
4876int sh_unix_mlock (const char * file, int line, void * in_addr, size_t len)
4877{
4878 (void) file; (void) line;
4879 (void) in_addr; (void) len;
4880 return -1;
4881}
4882#endif
4883
4884#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4885int sh_unix_munlock (void * in_addr, size_t len)
4886{
4887 int num_pages;
4888 int unlocked;
4889 int status;
4890 int pagesize;
4891 sh_page_l * page_list;
4892 sh_page_l * page_last;
4893 unsigned long addr;
4894
4895 int test_count;
4896 int test_status;
4897 int test_pages;
4898
4899#ifdef TEST_MLOCK
4900 int i = 0;
4901#endif
4902
4903 SL_ENTER(_("sh_unix_munlock"));
4904
4905 /* There's no cancellation point here, except if tracing is on
4906 */
4907 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4908
4909 unlocked = 0;
4910 status = 0;
4911 page_list = sh_page_locked;
4912
4913 if (0 != page_locking)
4914 {
4915 status = -1;
4916 goto exit_munlock;
4917 }
4918 page_locking = 1;
4919
4920 pagesize = sh_unix_pagesize();
4921 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4922
4923#ifdef TEST_MLOCK
4924 fprintf(stderr, "munlock: in_addr %ld, addr %ld, pages: %d, length %d\n",
4925 (unsigned long) in_addr, addr, num_pages, len);
4926#endif
4927
4928 test_pages = num_pages;
4929
4930 /* reduce refcount of locked pages
4931 * addr is first page; num_pages is #(consecutive pages) to lock
4932 */
4933 while ((page_list != NULL) && (num_pages > 0))
4934 {
4935#ifdef TEST_MLOCK
4936 fprintf(stderr, "munlock: page %d: %ld [%d]\n",
4937 i, page_list->page_start, page_list->page_refcount);
4938#endif
4939
4940 test_status = 0;
4941 for (test_count = 0; test_count < test_pages; ++test_count)
4942 {
4943 if (page_list->page_start == (addr + (test_count * pagesize)))
4944 {
4945 test_status = 1;
4946 break;
4947 }
4948 }
4949
4950 if (test_status == 1)
4951 {
4952 page_list->page_refcount -= 1;
4953 if (page_list->page_refcount == 0)
4954 {
4955 status = munlock ( (void *) addr, pagesize);
4956 ++unlocked;
4957 }
4958 num_pages -= 1;
4959#ifdef TEST_MLOCK
4960 fprintf(stderr,
4961 "munlock: page %d: %ld [refcount %d], refcount reduced\n",
4962 i, page_list->page_start, page_list->page_refcount);
4963#endif
4964 }
4965#ifdef TEST_MLOCK
4966 ++i;
4967#endif
4968 page_list = page_list->next;
4969 }
4970
4971#ifdef TEST_MLOCK
4972 i = 0;
4973#endif
4974
4975 if (unlocked > 0)
4976 {
4977 page_list = sh_page_locked;
4978 page_last = sh_page_locked;
4979
4980 while ((page_list != NULL) && (unlocked > 0))
4981 {
4982 if (page_list->page_refcount == 0)
4983 {
4984#ifdef TEST_MLOCK
4985 fprintf(stderr, "munlock: remove page %d: %ld [refcount %d]\n",
4986 i, page_list->page_start, page_list->page_refcount);
4987#endif
4988 if (page_last != page_list)
4989 {
4990 page_last->next = page_list->next;
4991 SH_FREE(page_list);
4992 page_list = page_last->next;
4993 }
4994 else
4995 {
4996 page_last = page_list->next;
4997 if (page_list == sh_page_locked)
4998 sh_page_locked = page_list->next;
4999 SH_FREE(page_list);
5000 page_list = page_last;
5001 }
5002 --unlocked;
5003 }
5004 else
5005 {
5006#ifdef TEST_MLOCK
5007 fprintf(stderr, "munlock: skip page %d: %ld [refcount %d]\n",
5008 i, page_list->page_start, page_list->page_refcount);
5009#endif
5010
5011 page_last = page_list;
5012 page_list = page_list->next;
5013 }
5014#ifdef TEST_MLOCK
5015 ++i;
5016#endif
5017 }
5018 }
5019
5020 page_locking = 0;
5021
5022 exit_munlock:
5023 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
5024 SL_RETURN((status), _("sh_unix_munlock"));
5025}
5026#else
5027int sh_unix_munlock (void * in_addr, size_t len)
5028{
5029 (void) in_addr; (void) len;
5030 return -1;
5031}
5032#endif
5033
5034int sh_unix_count_mlock()
5035{
5036 int i = 0;
5037 char str[32][64];
5038 sh_page_l * page_list;
5039
5040 SL_ENTER(_("sh_unix_count_mlock"));
5041
5042#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
5043 /* There's no cancellation point here, except if tracing is on
5044 */
5045 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
5046#endif
5047
5048 page_list = sh_page_locked;
5049
5050 while (page_list != NULL)
5051 {
5052#ifdef WITH_TPT
5053 if (i < 32)
5054 sl_snprintf(str[i], 64, _("file: %s line: %d page: %d"),
5055 page_list->file, page_list->line, i+1);
5056#endif
5057 page_list = page_list->next;
5058 ++i;
5059 }
5060
5061#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
5062 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
5063#endif
5064
5065#ifdef WITH_TPT
5066 {
5067 int j = 0;
5068 while (j < i && j < 32)
5069 {
5070 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, j, MSG_E_SUBGEN,
5071 str[j], _("sh_unix_count_mlock"));
5072 ++j;
5073 }
5074 }
5075#endif
5076
5077 sl_snprintf(str[0], 64, _("%d pages locked"), i);
5078 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, i, MSG_E_SUBGEN,
5079 str[0], _("sh_unix_count_mlock"));
5080 SL_RETURN((i), _("sh_unix_count_mlock"));
5081}
5082
5083/************************************************/
5084/************************************************/
5085/**** Stealth Utilities ****/
5086/************************************************/
5087/************************************************/
5088#ifdef SH_STEALTH
5089
5090void sh_unix_xor_code (char * str, int len)
5091{
5092 register int i;
5093
5094 for (i = 0; i < len; ++i) str[i] ^= (char) XOR_CODE;
5095 return;
5096}
5097
5098#if !defined(SH_STEALTH_MICRO)
5099
5100
5101int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
5102 unsigned long * bytes_read);
5103unsigned long first_hex_block(SL_TICKET fd, unsigned long * max);
5104
5105/*
5106 * --- Get hidden data from a block of hex data. ---
5107 */
5108int sh_unix_getline_stealth (SL_TICKET fd, char * str, int len)
5109{
5110 int add_off = 0, llen;
5111 static unsigned long off_data = 0;
5112 static unsigned long max_data = 0;
5113 static unsigned long bytes_read = 0;
5114 static int stealth_init = BAD;
5115
5116 SL_ENTER(_("sh_unix_getline_stealth"));
5117
5118 if (str == NULL)
5119 {
5120 off_data = 0;
5121 max_data = 0;
5122 bytes_read = 0;
5123 stealth_init = BAD;
5124 SL_RETURN(0, _("sh_unix_getline_stealth"));
5125 }
5126
5127 /* --- Initialize. ---
5128 */
5129 if (stealth_init == BAD)
5130 {
5131 off_data = first_hex_block(fd, &max_data);
5132 if (off_data == 0)
5133 {
5134 dlog(1, FIL__, __LINE__,
5135 _("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"));
5136 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
5137 _("Stealth config file."));
5138 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
5139 }
5140 stealth_init = GOOD;
5141 max_data += off_data;
5142 }
5143
5144 /* --- Seek to proper position. ---
5145 */
5146 if (bytes_read >= max_data || add_off < 0)
5147 {
5148 dlog(1, FIL__, __LINE__,
5149 _("The capacity of the container image file for the stealth config file seems to be too small. Your config file is likely truncated.\n"));
5150 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
5151 _("Stealth config file."));
5152 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
5153 }
5154 sl_seek(fd, off_data);
5155
5156 /* --- Read one line. ---
5157 */
5158 add_off = hideout_hex_block(fd, (unsigned char *) str, len, &bytes_read);
5159 off_data += add_off;
5160
5161 llen = sl_strlen(str);
5162 SL_RETURN(llen, _("sh_unix_getline_stealth"));
5163}
5164
5165int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
5166 unsigned long * bytes_read)
5167{
5168
5169 register int i, j, k;
5170 unsigned char c, e;
5171 register int num;
5172 unsigned char mask[9] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
5173 unsigned long here = 0;
5174 unsigned long retval = 0;
5175 unsigned long bread = 0;
5176
5177 SL_ENTER(_("hideout_hex_block"));
5178
5179 ASSERT_RET((len > 1), _("len > 1"), (0));
5180
5181 --len;
5182
5183 i = 0;
5184 while (i < len)
5185 {
5186 for (j = 0; j < 8; ++j)
5187 {
5188
5189 /* --- Get a low byte, modify, read back. ---
5190 */
5191 for (k = 0; k < 2; ++k)
5192 {
5193 /* -- Skip whitespace. ---
5194 */
5195 c = ' ';
5196 do {
5197 do {
5198 num = sl_read (fd, &c, 1);
5199 } while (num == 0 && errno == EINTR);
5200 if (num > 0)
5201 ++here;
5202 else if (num == 0)
5203 SL_RETURN((0), _("hideout_hex_block"));
5204 else
5205 SL_RETURN((-1), _("hideout_hex_block"));
5206 } while (c == '\n' || c == '\t' || c == '\r' ||
5207 c == ' ');
5208 }
5209
5210
5211 /* --- e is the value of the low byte. ---
5212 */
5213 e = (unsigned char) sh_util_hexchar( c );
5214 if ((e & mask[7]) != 0) /* bit is set */
5215 str[i] |= mask[j];
5216 else /* bit is not set */
5217 str[i] &= ~mask[j];
5218
5219 bread += 1;
5220 }
5221 if (str[i] == '\n') break;
5222 ++i;
5223 }
5224
5225 if (i != 0)
5226 str[i] = '\0';
5227 else
5228 str[i+1] = '\0'; /* keep newline and terminate */
5229 retval += here;
5230 *bytes_read += (bread/8);
5231
5232 SL_RETURN(retval, _("hideout_hex_block"));
5233}
5234
5235/* --- Get offset of first data block. ---
5236 */
5237unsigned long first_hex_block(SL_TICKET fd, unsigned long * max)
5238{
5239 unsigned int i;
5240 long num = 1;
5241 unsigned long lnum;
5242 char c;
5243 int nothex = 0;
5244 unsigned long retval = 0;
5245 unsigned int this_line = 0;
5246 char theline[SH_BUFSIZE];
5247
5248 SL_ENTER(_("first_hex_block"));
5249
5250 *max = 0;
5251
5252 while (1)
5253 {
5254 theline[0] = '\0';
5255 this_line = 0;
5256 c = '\0';
5257 while (c != '\n' && num > 0 && this_line < (sizeof(theline)-1))
5258 {
5259 do {
5260 num = sl_read (fd, &c, 1);
5261 } while (num == 0 && errno == EINTR);
5262 if (num > 0)
5263 theline[this_line] = c;
5264 else
5265 SL_RETURN((0), _("first_hex_block"));
5266 ++this_line;
5267 }
5268 theline[this_line] = '\0';
5269
5270 /* not only 'newline' */
5271 if (this_line > 60)
5272 {
5273 nothex = 0;
5274 i = 0;
5275 while (nothex == 0 && i < (this_line-1))
5276 {
5277 if (! isxdigit((int)theline[i])) nothex = 1;
5278 ++i;
5279 }
5280 if (nothex == 1) retval += this_line;
5281 }
5282 else
5283 {
5284 nothex = 1;
5285 retval += this_line;
5286 }
5287
5288 if (nothex == 0)
5289 {
5290 *max = 0;
5291 do {
5292 do {
5293 num = sl_read (fd, theline, SH_BUFSIZE);
5294 } while (num == 0 && errno == EINTR);
5295 if (num > 0)
5296 {
5297 lnum = (unsigned long) num;
5298 for (i = 0; i < lnum; ++i)
5299 {
5300 c = theline[i];
5301 if (c == '\n' || c == '\t' || c == '\r' || c == ' ')
5302 ;
5303 else if (!isxdigit((int)c))
5304 break;
5305 else
5306 *max += 1;
5307 }
5308 }
5309 } while (num > 0);
5310
5311 *max /= 16;
5312 SL_RETURN((retval), _("first_hex_block"));
5313 }
5314
5315 }
5316 /* SL_RETURN((0), _("first_hex_block")); *//* unreachable */
5317}
5318
5319 /* if !defined(SH_STEALTH_MICRO) */
5320#endif
5321
5322 /* ifdef SH_STEALTH */
5323#endif
5324
5325/*
5326 * anti-debugger code
5327 */
5328#if defined(SCREW_IT_UP)
5329volatile int sh_not_traced = 0;
5330
5331#ifdef HAVE_GETTIMEOFDAY
5332struct timeval save_tv;
5333#endif
5334
5335void sh_sigtrap_handler (int signum)
5336{
5337#ifdef HAVE_GETTIMEOFDAY
5338 struct timeval tv;
5339 long difftv;
5340
5341 gettimeofday(&tv, NULL);
5342 difftv = (tv.tv_sec - save_tv.tv_sec) * 1000000 +
5343 (tv.tv_usec - save_tv.tv_usec);
5344 if (difftv > 500000)
5345 raise(SIGKILL);
5346#endif
5347 sh_not_traced += signum;
5348 return;
5349}
5350#endif
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