source: trunk/src/sh_unix.c@ 381

Last change on this file since 381 was 381, checked in by katerina, 13 years ago

Fix for ticket #279 (checksum flip with --enable-suidcheck).
File size: 125.7 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
701void sh_unix_ign_sigpipe()
702{
703 struct sigaction ignact;
704
705 ignact.sa_handler = SIG_IGN; /* signal action */
706 sigemptyset( &ignact.sa_mask ); /* set an empty mask */
707 ignact.sa_flags = 0; /* init sa_flags */
708
709#ifdef SIGPIPE
710 retry_sigaction(FIL__, __LINE__, SIGPIPE, &ignact, NULL);
711#endif
712
713 return;
714}
715static
716void sh_unix_siginstall (int goDaemon)
717{
718 struct sigaction act, act_fast, act2, oldact, ignact;
719#if defined (SH_WITH_SERVER)
720 (void) goDaemon;
721#endif
722
723 SL_ENTER(_("sh_unix_siginstall"));
724
725 ignact.sa_handler = SIG_IGN; /* signal action */
726 sigemptyset( &ignact.sa_mask ); /* set an empty mask */
727 ignact.sa_flags = 0; /* init sa_flags */
728
729#if defined(SA_SIGACTION_WORKS)
730 act.sa_sigaction = &sh_unix_sigexit; /* signal action */
731#else
732 act.sa_handler = &sh_unix_sigexit; /* signal action */
733#endif
734
735 sigfillset ( &act.sa_mask ); /* set a full mask */
736
737
738 /* Block all but deadly signals.
739 */
740#ifdef SIGILL
741 sigdelset ( &act.sa_mask, SIGILL );
742#endif
743#ifndef SL_DEBUG
744#ifdef SIGFPE
745 sigdelset ( &act.sa_mask, SIGFPE );
746#endif
747#endif
748#ifdef SIGSEGV
749 sigdelset ( &act.sa_mask, SIGSEGV );
750#endif
751#ifdef SIGBUS
752 sigdelset ( &act.sa_mask, SIGBUS );
753#endif
754
755#if defined(SA_SIGACTION_WORKS)
756 act_fast.sa_sigaction = &sh_unix_sigexit_fast; /* signal action */
757#else
758 act_fast.sa_handler = &sh_unix_sigexit_fast; /* signal action */
759#endif
760
761 sigfillset ( &act_fast.sa_mask ); /* set a full mask */
762
763#ifdef SIGILL
764 sigdelset ( &act_fast.sa_mask, SIGILL );
765#endif
766#ifndef SL_DEBUG
767#ifdef SIGFPE
768 sigdelset ( &act_fast.sa_mask, SIGFPE );
769#endif
770#endif
771#ifdef SIGSEGV
772 sigdelset ( &act_fast.sa_mask, SIGSEGV );
773#endif
774#ifdef SIGBUS
775 sigdelset ( &act_fast.sa_mask, SIGBUS );
776#endif
777
778
779 /* Use siginfo to verify origin of signal, if possible.
780 */
781#if defined(SA_SIGACTION_WORKS)
782 act.sa_flags = SA_SIGINFO;
783 act_fast.sa_flags = SA_SIGINFO;
784#else
785 act.sa_flags = 0;
786 act_fast.sa_flags = 0;
787#endif
788
789 /* Do not block the signal from being received in its handler ...
790 * (is this a good or a bad idea ??).
791 */
792#if defined(SA_NOMASK)
793 act_fast.sa_flags |= SA_NOMASK;
794#elif defined(SA_NODEFER)
795 act_fast.sa_flags |= SA_NODEFER;
796#endif
797
798
799 act2.sa_handler = &sh_unix_sigaction; /* signal action */
800 sigemptyset( &act2.sa_mask ); /* set an empty mask */
801 act2.sa_flags = 0; /* init sa_flags */
802
803 /* signals to control the daemon */
804
805#ifdef SIGHUP
806 retry_sigaction(FIL__, __LINE__, SIGHUP, &act2, &oldact);
807#endif
808#ifdef SIGABRT
809 retry_sigaction(FIL__, __LINE__, SIGABRT, &act2, &oldact);
810#endif
811#ifdef SIGUSR1
812 retry_sigaction(FIL__, __LINE__, SIGUSR1, &act2, &oldact);
813#endif
814#ifdef SIGUSR2
815 retry_sigaction(FIL__, __LINE__, SIGUSR2, &act2, &oldact);
816#endif
817#ifdef SIGQUIT
818 retry_sigaction(FIL__, __LINE__, SIGQUIT, &act2, &oldact);
819#endif
820#ifdef SIGTERM
821 retry_sigaction(FIL__, __LINE__, SIGTERM, &act, &oldact);
822#endif
823
824 /* fatal signals that may cause termination */
825
826#ifdef SIGILL
827 retry_sigaction(FIL__, __LINE__, SIGILL, &act_fast, &oldact);
828#endif
829#ifndef SL_DEBUG
830#ifdef SIGFPE
831 retry_sigaction(FIL__, __LINE__, SIGFPE, &act_fast, &oldact);
832#endif
833#endif
834#ifdef SIGSEGV
835 retry_sigaction(FIL__, __LINE__, SIGSEGV, &act_fast, &oldact);
836#endif
837#ifdef SIGBUS
838 retry_sigaction(FIL__, __LINE__, SIGBUS, &act_fast, &oldact);
839#endif
840
841 /* other signals */
842
843#ifdef SIGINT
844 retry_sigaction(FIL__, __LINE__, SIGINT, &act, &oldact);
845#endif
846#ifdef SIGPIPE
847 retry_sigaction(FIL__, __LINE__, SIGPIPE, &ignact, &oldact);
848#endif
849#ifdef SIGALRM
850 retry_sigaction(FIL__, __LINE__, SIGALRM, &ignact, &oldact);
851#endif
852#ifdef SIGTSTP
853 retry_sigaction(FIL__, __LINE__, SIGTSTP, &ignact, &oldact);
854#endif
855
856#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
857#ifdef SIGTTOU
858 if (goDaemon == 1)
859 retry_sigaction(FIL__, __LINE__, SIGTTOU, &act2, &oldact);
860 else
861 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
862#endif
863#ifdef SIGTTIN
864 if (goDaemon == 1)
865 retry_sigaction(FIL__, __LINE__, SIGTTIN, &act2, &oldact);
866 else
867 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
868#endif
869#else
870#ifdef SIGTTOU
871 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
872#endif
873#ifdef SIGTTIN
874 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
875#endif
876#endif
877
878#ifdef SIGTRAP
879#if !defined(SCREW_IT_UP)
880 retry_sigaction(FIL__, __LINE__, SIGTRAP, &act, &oldact);
881#endif
882#endif
883
884#ifdef SIGPOLL
885 retry_sigaction(FIL__, __LINE__, SIGPOLL, &ignact, &oldact);
886#endif
887#if defined(SIGPROF) && !defined(SH_PROFILE)
888 retry_sigaction(FIL__, __LINE__, SIGPROF, &ignact, &oldact);
889#endif
890#ifdef SIGSYS
891 retry_sigaction(FIL__, __LINE__, SIGSYS, &act, &oldact);
892#endif
893#ifdef SIGURG
894 retry_sigaction(FIL__, __LINE__, SIGURG, &ignact, &oldact);
895#endif
896#if defined(SIGVTALRM) && !defined(SH_PROFILE)
897 retry_sigaction(FIL__, __LINE__, SIGVTALRM, &ignact, &oldact);
898#endif
899#ifdef SIGXCPU
900 retry_sigaction(FIL__, __LINE__, SIGXCPU, &act, &oldact);
901#endif
902#ifdef SIGXFSZ
903 retry_sigaction(FIL__, __LINE__, SIGXFSZ, &act, &oldact);
904#endif
905
906#ifdef SIGEMT
907 retry_sigaction(FIL__, __LINE__, SIGEMT, &ignact, &oldact);
908#endif
909#ifdef SIGSTKFLT
910 retry_sigaction(FIL__, __LINE__, SIGSTKFLT, &act, &oldact);
911#endif
912#ifdef SIGIO
913 retry_sigaction(FIL__, __LINE__, SIGIO, &ignact, &oldact);
914#endif
915#ifdef SIGPWR
916 retry_sigaction(FIL__, __LINE__, SIGPWR, &act, &oldact);
917#endif
918
919#ifdef SIGLOST
920 retry_sigaction(FIL__, __LINE__, SIGLOST, &ignact, &oldact);
921#endif
922#ifdef SIGUNUSED
923 retry_sigaction(FIL__, __LINE__, SIGUNUSED, &ignact, &oldact);
924#endif
925
926 SL_RET0(_("sh_unix_siginstall"));
927}
928
929/* ---------------------------------------------------------------- */
930
931/* checksum the own binary
932 */
933int sh_unix_self_hash (const char * c)
934{
935 char message[512];
936 char hashbuf[KEYBUF_SIZE];
937
938 SL_ENTER(_("sh_unix_self_hash"));
939
940 if (c == NULL)
941 {
942 sh.exec.path[0] = '\0';
943 SL_RETURN((0), _("sh_unix_self_hash"));
944 }
945 sl_strlcpy(sh.exec.path, c, SH_PATHBUF);
946
947 sl_strlcpy(sh.exec.hash,
948 sh_tiger_hash (c, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
949 KEY_LEN+1);
950 sl_snprintf(message, 512, _("%s has checksum: %s"),
951 sh.exec.path, sh.exec.hash);
952 message[511] = '\0';
953 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
954 message, _("sh_unix_self_hash"));
955 if (0 == sl_strcmp(sh.exec.hash, SH_KEY_NULL ))
956 {
957 dlog(1, FIL__, __LINE__,
958 _("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"),
959 sh.exec.path, sl_get_errmsg(), (int) sl_ret_euid());
960 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_NOACCESS,
961 (long) sh.real.uid, c);
962 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
963 }
964 SL_RETURN((0), _("sh_unix_self_hash"));
965}
966
967int sh_unix_self_check ()
968{
969 char newhash[KEY_LEN+1];
970 char message[512];
971 char hashbuf[KEYBUF_SIZE];
972
973 SL_ENTER(_("sh_unix_self_check"));
974 if (sh.exec.path == NULL || sh.exec.path[0] == '\0')
975 SL_RETURN((0), _("sh_unix_self_check"));
976
977 sl_strlcpy(newhash,
978 sh_tiger_hash (sh.exec.path, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
979 KEY_LEN+1);
980 if (0 == sl_strncmp(sh.exec.hash,
981 newhash,
982 KEY_LEN))
983 SL_RETURN((0), _("sh_unix_self_check"));
984
985
986 dlog(1, FIL__, __LINE__,
987 _("The checksum of the executable: %s has changed since startup (%s -> %s).\n"),
988 sh.exec.path, sh.exec.hash, newhash);
989
990 sl_snprintf(message, 512,
991 _("The checksum of %s has changed since startup (%s -> %s)"),
992 sh.exec.path, sh.exec.hash, newhash);
993 message[511] = '\0';
994
995 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
996 message, _("sh_unix_self_check"));
997 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_E_AUTH,
998 sh.exec.path);
999 SL_RETURN((-1), _("sh_unix_self_check"));
1000}
1001
1002
1003/* ---------------------------------------------------------------- */
1004
1005
1006/* added Tue Feb 22 10:36:44 NFT 2000 Rainer Wichmann */
1007static int tf_add_trusted_user_int(const char * c)
1008{
1009 struct passwd * w;
1010 int count;
1011 uid_t pwid = (uid_t)-1;
1012
1013#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1014 struct passwd pwd;
1015 char * buffer;
1016#endif
1017
1018 SL_ENTER(_("tf_add_trusted_user_int"));
1019
1020 /* First check for a user name.
1021 */
1022#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1023 buffer = SH_ALLOC(SH_PWBUF_SIZE);
1024 sh_getpwnam_r(c, &pwd, buffer, SH_PWBUF_SIZE, &w);
1025#else
1026 w = sh_getpwnam(c);
1027#endif
1028
1029 if ((w != NULL) && ((pwid = w->pw_uid) > 0))
1030 goto succe;
1031
1032 /* Failed, so check for a numerical value.
1033 */
1034 pwid = strtol(c, (char **)NULL, 10);
1035 if (pwid > 0 && pwid < 65535)
1036 goto succe;
1037
1038 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1039 _("add trusted user"), c);
1040#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1041 SH_FREE(buffer);
1042#endif
1043 SL_RETURN((-1), _("tf_add_trusted_user_int"));
1044
1045 succe:
1046 count = sl_trust_add_user(pwid);
1047#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1048 SH_FREE(buffer);
1049#endif
1050 SL_RETURN((count), _("tf_add_trusted_user_int"));
1051}
1052
1053int tf_add_trusted_user(const char * c)
1054{
1055 int i;
1056 char * q;
1057 char * p = sh_util_strdup (c);
1058#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1059 char * saveptr;
1060#endif
1061
1062 SL_ENTER(_("tf_add_trusted_user"));
1063
1064#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1065 q = strtok_r(p, ", \t", &saveptr);
1066#else
1067 q = strtok(p, ", \t");
1068#endif
1069 if (!q)
1070 {
1071 SH_FREE(p);
1072 SL_RETURN((-1), _("tf_add_trusted_user"));
1073 }
1074 while (q)
1075 {
1076 i = tf_add_trusted_user_int(q);
1077 if (SL_ISERROR(i))
1078 {
1079 SH_FREE(p);
1080 SL_RETURN((i), _("tf_add_trusted_user"));
1081 }
1082#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1083 q = strtok_r(NULL, ", \t", &saveptr);
1084#else
1085 q = strtok(NULL, ", \t");
1086#endif
1087 }
1088 SH_FREE(p);
1089 SL_RETURN((0), _("tf_add_trusted_user"));
1090}
1091
1092extern uid_t sl_trust_baduid(void);
1093extern gid_t sl_trust_badgid(void);
1094
1095#if defined(HOST_IS_CYGWIN) || defined(__cygwin__) || defined(__CYGWIN32__) || defined(__CYGWIN__)
1096int tf_trust_check (const char * file, int mode)
1097{
1098 (void) file;
1099 (void) mode;
1100 return 0;
1101}
1102#else
1103int tf_trust_check (const char * file, int mode)
1104{
1105 char * tmp;
1106 char * tmp2;
1107 char * p;
1108 int status;
1109 int level;
1110 uid_t ff_euid;
1111
1112 SL_ENTER(_("tf_trust_check"));
1113
1114 if (mode == SL_YESPRIV)
1115 sl_get_euid(&ff_euid);
1116 else
1117 sl_get_ruid(&ff_euid);
1118
1119#if defined(SH_WITH_SERVER)
1120 if (0 == sl_ret_euid()) /* privileges not dropped yet */
1121 {
1122#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1123 struct passwd pwd;
1124 char * buffer = SH_ALLOC(SH_PWBUF_SIZE);
1125 struct passwd * tempres;
1126 sh_getpwnam_r(DEFAULT_IDENT, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
1127#else
1128 struct passwd * tempres = sh_getpwnam(DEFAULT_IDENT);
1129#endif
1130
1131 if (!tempres)
1132 {
1133 dlog(1, FIL__, __LINE__,
1134 _("User %s does not exist. Please add the user to your system.\n"),
1135 DEFAULT_IDENT);
1136 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
1137 }
1138 ff_euid = tempres->pw_uid;
1139#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1140 SH_FREE(buffer);
1141#endif
1142 }
1143#endif
1144
1145 status = sl_trustfile_euid(file, ff_euid);
1146
1147 if ( SL_ENONE != status)
1148 {
1149 if (status == SL_ESTAT)
1150 level = SH_ERR_ALL;
1151 else
1152 level = SH_ERR_ERR;
1153
1154 tmp = sh_util_safe_name (file);
1155 p = sl_trust_errfile();
1156 if (p && *p != '\0')
1157 {
1158 tmp2 = sh_util_safe_name (sl_trust_errfile());
1159 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST2,
1160 sl_error_string(status), tmp, tmp2);
1161 SH_FREE(tmp2);
1162 }
1163 else
1164 {
1165 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST1,
1166 sl_error_string(status), tmp);
1167 }
1168 SH_FREE(tmp);
1169
1170 if (status == SL_EBADUID || status == SL_EBADGID ||
1171 status == SL_EBADOTH || status == SL_ETRUNC ||
1172 status == SL_EINTERNAL )
1173 {
1174 switch (status) {
1175 case SL_EINTERNAL:
1176 dlog(1, FIL__, __LINE__,
1177 _("An internal error occured in the trustfile function.\n"));
1178 break;
1179 case SL_ETRUNC:
1180 tmp = sh_util_safe_name (file);
1181 dlog(1, FIL__, __LINE__,
1182 _("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"),
1183 tmp);
1184 SH_FREE(tmp);
1185 break;
1186 case SL_EBADOTH:
1187 tmp = sh_util_safe_name (file);
1188 p = sl_trust_errfile();
1189 dlog(1, FIL__, __LINE__,
1190 _("The path element: %s\nin the filename: %s is world writeable.\n"),
1191 p, tmp);
1192 SH_FREE(tmp);
1193 break;
1194 case SL_EBADUID:
1195 tmp = sh_util_safe_name (file);
1196 p = sl_trust_errfile();
1197 dlog(1, FIL__, __LINE__,
1198 _("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"),
1199 (UID_CAST)sl_trust_baduid(), p, tmp);
1200 SH_FREE(tmp);
1201 break;
1202 case SL_EBADGID:
1203 tmp = sh_util_safe_name (file);
1204 p = sl_trust_errfile();
1205 dlog(1, FIL__, __LINE__,
1206 _("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"),
1207 p, tmp, (UID_CAST)sl_trust_badgid(),
1208 (UID_CAST)sl_trust_baduid());
1209 SH_FREE(tmp);
1210 break;
1211 default:
1212 break;
1213 }
1214
1215 SL_RETURN((-1), _("tf_trust_check"));
1216 }
1217 }
1218
1219 SL_RETURN((0), _("tf_trust_check"));
1220}
1221#endif
1222
1223#ifdef HAVE_INITGROUPS
1224#ifdef HOST_IS_OSF
1225int sh_unix_initgroups ( char * in_user, gid_t in_gid)
1226#else
1227int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1228#endif
1229{
1230 int status = -1;
1231 status = sh_initgroups (in_user, in_gid);
1232 if (status < 0)
1233 {
1234 if (errno == EPERM)
1235 return 0;
1236 if (errno == EINVAL)
1237 return 0;
1238 return -1;
1239 }
1240 return 0;
1241}
1242#else
1243int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1244{
1245 (void) in_user;
1246 (void) in_gid;
1247 return 0;
1248}
1249#endif
1250
1251#ifdef HAVE_INITGROUPS
1252char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len);
1253int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1254{
1255 int status = -1;
1256 char user[SH_MINIBUF];
1257
1258 SL_ENTER(_("sh_unix_initgroups2"));
1259
1260 if (NULL == sh_unix_getUIDname (SH_ERR_ERR, in_pid, user, sizeof(user)))
1261 SL_RETURN((-1), _("sh_unix_initgroups2"));
1262 status = sh_initgroups (user, in_gid);
1263 if (status < 0)
1264 {
1265 if (errno == EPERM)
1266 status = 0;
1267 if (errno == EINVAL)
1268 status = 0;
1269 }
1270 SL_RETURN((status), _("sh_unix_initgroups2"));
1271}
1272#else
1273int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1274{
1275 (void) in_pid;
1276 (void) in_gid;
1277 return 0;
1278}
1279#endif
1280
1281void sh_unix_closeall (int fd, int except, int inchild)
1282{
1283 int fdx = fd;
1284#ifdef _SC_OPEN_MAX
1285 int fdlimit = sysconf (_SC_OPEN_MAX);
1286#else
1287#ifdef OPEN_MAX
1288 int fdlimit = OPEN_MAX;
1289#else
1290 int fdlimit = _POSIX_OPEN_MAX;
1291#endif
1292#endif
1293
1294 SL_ENTER(_("sh_unix_closeall"));
1295
1296 /* can't happen - so fix it :-(
1297 */
1298 if (fdlimit < 0)
1299 fdlimit = 20; /* POSIX lower limit */
1300
1301 if (fdlimit > 65536)
1302 fdlimit = 65536;
1303
1304 if (!inchild)
1305 sl_dropall (fdx, except);
1306 else
1307 sl_dropall_dirty (fdx, except);
1308
1309 /* Close everything from fd (inclusive) up to fdlimit (exclusive).
1310 */
1311 while (fd < fdlimit)
1312 {
1313 if (fd == except)
1314 fd++;
1315 else if (slib_do_trace != 0 && fd == slib_trace_fd)
1316 fd++;
1317 else
1318 sl_close_fd(FIL__, __LINE__, fd++);
1319 }
1320
1321 SL_RET0(_("sh_unix_closeall"));
1322}
1323
1324static void sh_unix_setlimits(void)
1325{
1326 struct rlimit limits;
1327
1328 SL_ENTER(_("sh_unix_setlimits"));
1329
1330 limits.rlim_cur = RLIM_INFINITY;
1331 limits.rlim_max = RLIM_INFINITY;
1332
1333#ifdef RLIMIT_CPU
1334 setrlimit (RLIMIT_CPU, &limits);
1335#endif
1336#ifdef RLIMIT_FSIZE
1337 setrlimit (RLIMIT_FSIZE, &limits);
1338#endif
1339#ifdef RLIMIT_DATA
1340 setrlimit (RLIMIT_DATA, &limits);
1341#endif
1342#ifdef RLIMIT_STACK
1343 setrlimit (RLIMIT_STACK, &limits);
1344#endif
1345#ifdef RLIMIT_RSS
1346 setrlimit (RLIMIT_RSS, &limits);
1347#endif
1348#ifdef RLIMIT_NPROC
1349 setrlimit (RLIMIT_NPROC, &limits);
1350#endif
1351#ifdef RLIMIT_MEMLOCK
1352 setrlimit (RLIMIT_MEMLOCK, &limits);
1353#endif
1354
1355#if !defined(SL_DEBUG)
1356 /* no core dumps
1357 */
1358 limits.rlim_cur = 0;
1359 limits.rlim_max = 0;
1360#ifdef RLIMIT_CORE
1361 setrlimit (RLIMIT_CORE, &limits);
1362#endif
1363#else
1364#ifdef RLIMIT_CORE
1365 setrlimit (RLIMIT_CORE, &limits);
1366#endif
1367#endif
1368
1369 limits.rlim_cur = 1024;
1370 limits.rlim_max = 1024;
1371
1372#if defined(RLIMIT_NOFILE)
1373 setrlimit (RLIMIT_NOFILE, &limits);
1374#elif defined(RLIMIT_OFILE)
1375 setrlimit (RLIMIT_OFILE, &limits);
1376#endif
1377
1378 SL_RET0(_("sh_unix_setlimits"));
1379}
1380
1381static void sh_unix_copyenv(void)
1382{
1383 char ** env0 = environ;
1384 char ** env1;
1385 int envlen = 0;
1386 size_t len;
1387
1388 SL_ENTER(_("sh_unix_copyenv"));
1389
1390 while (env0 != NULL && env0[envlen] != NULL) {
1391 /* printf("%2d: %s\n", envlen, env0[envlen]); */
1392 ++envlen;
1393 }
1394 ++envlen;
1395
1396 /* printf("-> %2d: slots allocated\n", envlen); */
1397 env1 = malloc (sizeof(char *) * envlen); /* only once */
1398 if (env1 == NULL)
1399 {
1400 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1401 SL_RET0(_("sh_unix_copyenv"));
1402 }
1403 env0 = environ;
1404 envlen = 0;
1405
1406 while (env0 != NULL && env0[envlen] != NULL) {
1407 len = strlen(env0[envlen]) + 1;
1408 env1[envlen] = malloc (len); /* only once */
1409 if (env1[envlen] == NULL)
1410 {
1411 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1412 SL_RET0(_("sh_unix_copyenv"));
1413 }
1414 sl_strlcpy(env1[envlen], env0[envlen], len);
1415 ++envlen;
1416 }
1417 env1[envlen] = NULL;
1418
1419 environ = env1;
1420 SL_RET0(_("sh_unix_copyenv"));
1421}
1422
1423/* delete all environment variables
1424 */
1425static void sh_unix_zeroenv(void)
1426{
1427 char * c;
1428 char ** env;
1429
1430 SL_ENTER(_("sh_unix_zeroenv"));
1431
1432 sh_unix_copyenv();
1433 env = environ;
1434
1435 while (env != NULL && *env != NULL) {
1436 c = strchr ((*env), '=');
1437#ifdef WITH_MYSQL
1438 /*
1439 * Skip the MYSQL_UNIX_PORT environment variable; MySQL may need it.
1440 */
1441 if (0 == sl_strncmp((*env), _("MYSQL_UNIX_PORT="), 16))
1442 {
1443 ++(env);
1444 continue;
1445 }
1446 if (0 == sl_strncmp((*env), _("MYSQL_TCP_PORT="), 15))
1447 {
1448 ++(env);
1449 continue;
1450 }
1451 if (0 == sl_strncmp((*env), _("MYSQL_HOME="), 11))
1452 {
1453 ++(env);
1454 continue;
1455 }
1456#endif
1457#ifdef WITH_ORACLE
1458 /*
1459 * Skip the ORACLE_HOME environment variable; Oracle may need it.
1460 */
1461 if (0 == sl_strncmp((*env), _("ORACLE_HOME="), 12))
1462 {
1463 ++(env);
1464 continue;
1465 }
1466#endif
1467 /*
1468 * Skip the TZ environment variable.
1469 */
1470 if (0 == sl_strncmp((*env), _("TZ="), 3))
1471 {
1472 ++(env);
1473 continue;
1474 }
1475 ++(env);
1476 if (c != NULL)
1477 {
1478 ++c;
1479 while ((*c) != '\0') {
1480 (*c) = '\0';
1481 ++c;
1482 }
1483 }
1484 }
1485
1486#ifdef HAVE_TZSET
1487 tzset();
1488#endif
1489
1490 SL_RET0(_("sh_unix_zeroenv"));
1491}
1492
1493
1494static void sh_unix_resettimer(void)
1495{
1496 struct itimerval this_timer;
1497
1498 SL_ENTER(_("sh_unix_resettimer"));
1499
1500 this_timer.it_value.tv_sec = 0;
1501 this_timer.it_value.tv_usec = 0;
1502
1503 this_timer.it_interval.tv_sec = 0;
1504 this_timer.it_interval.tv_usec = 0;
1505
1506 setitimer(ITIMER_REAL, &this_timer, NULL);
1507#if !defined(SH_PROFILE)
1508 setitimer(ITIMER_VIRTUAL, &this_timer, NULL);
1509 setitimer(ITIMER_PROF, &this_timer, NULL);
1510#endif
1511
1512 SL_RET0(_("sh_unix_resettimer"));
1513}
1514
1515static void sh_unix_resetsignals(void)
1516{
1517 int sig_num;
1518#ifdef NSIG
1519 int max_sig = NSIG;
1520#else
1521 int max_sig = 255;
1522#endif
1523 int test;
1524 int status;
1525 struct sigaction act;
1526#if !defined(SH_PROFILE)
1527 struct sigaction oldact;
1528#endif
1529
1530 sigset_t set_proc;
1531
1532 SL_ENTER(_("sh_unix_resetsignals"));
1533 /*
1534 * Reset the current signal mask (inherited from parent process).
1535 */
1536
1537 sigfillset(&set_proc);
1538
1539 do {
1540 errno = 0;
1541 test = SH_SETSIGMASK(SIG_UNBLOCK, &set_proc, NULL);
1542 } while (test < 0 && errno == EINTR);
1543
1544 /*
1545 * Reset signal handling.
1546 */
1547
1548 act.sa_handler = SIG_DFL; /* signal action */
1549 sigemptyset( &act.sa_mask ); /* set an empty mask */
1550 act.sa_flags = 0; /* init sa_flags */
1551
1552 for (sig_num = 1; sig_num <= max_sig; ++sig_num)
1553 {
1554#if !defined(SH_PROFILE)
1555 test = retry_sigaction(FIL__, __LINE__, sig_num, &act, &oldact);
1556#else
1557 test = 0;
1558#endif
1559 if ((test == -1) && (errno != EINVAL))
1560 {
1561 char errbuf[SH_ERRBUF_SIZE];
1562 status = errno;
1563 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_SIG,
1564 sh_error_message (status, errbuf, sizeof(errbuf)), sig_num);
1565 }
1566 }
1567
1568 SL_RET0(_("sh_unix_resetsignals"));
1569}
1570
1571/* Get the local hostname (FQDN)
1572 */
1573static char * sh_tolower (char * s)
1574{
1575 char * ret = s;
1576 if (s)
1577 {
1578 for (; *s; ++s)
1579 {
1580 *s = tolower((unsigned char) *s);
1581 }
1582 }
1583 return ret;
1584}
1585
1586
1587#include <sys/socket.h>
1588
1589/* Required for BSD
1590 */
1591#ifdef HAVE_NETINET_IN_H
1592#include <netinet/in.h>
1593#endif
1594
1595#include <arpa/inet.h>
1596
1597const char * sh_unix_h_name (struct hostent * host_entry)
1598{
1599 char ** p;
1600 if (strchr(host_entry->h_name, '.')) {
1601 return host_entry->h_name;
1602 } else {
1603 for (p = host_entry->h_aliases; *p; ++p) {
1604 if (strchr(*p, '.'))
1605 return *p;
1606 }
1607 }
1608 return host_entry->h_name;
1609}
1610
1611/* uname() on FreeBSD is broken, because the 'nodename' buf is too small
1612 * to hold a valid (leftmost) domain label.
1613 */
1614#if defined(HAVE_UNAME) && !defined(HOST_IS_FREEBSD)
1615#include <sys/utsname.h>
1616void sh_unix_localhost()
1617{
1618 struct utsname buf;
1619 int i;
1620 int ddot;
1621 int len;
1622 char * p;
1623 char hostname[256];
1624 char numeric[SH_IP_BUF];
1625 char * canonical;
1626
1627
1628 SL_ENTER(_("sh_unix_localhost"));
1629
1630 (void) uname (&buf);
1631 /* flawfinder: ignore */ /* ff bug, ff sees system() */
1632 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1633 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1634 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1635
1636 /* Workaround for cases where nodename could be
1637 * a truncated FQDN.
1638 */
1639 if (strlen(buf.nodename) == (sizeof(buf.nodename)-1))
1640 {
1641 p = strchr(buf.nodename, '.');
1642 if (NULL != p) {
1643 *p = '\0';
1644 sl_strlcpy(hostname, buf.nodename, 256);
1645 } else {
1646#ifdef HAVE_GETHOSTNAME
1647 if (0 != gethostname(hostname, 256))
1648 {
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 }
1654 else
1655 {
1656 hostname[255] = '\0';
1657 }
1658#else
1659 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1660 _("nodename returned by uname may be truncated"),
1661 _("sh_unix_localhost"));
1662 sl_strlcpy(hostname, buf.nodename, 256);
1663#endif
1664 }
1665 }
1666 else
1667 {
1668 sl_strlcpy(hostname, buf.nodename, 256);
1669 }
1670
1671 canonical = sh_ipvx_canonical(hostname, numeric, sizeof(numeric));
1672
1673 if (canonical == NULL)
1674 {
1675 sl_strlcpy (sh.host.name, hostname, SH_PATHBUF);
1676 sh_tolower (sh.host.name);
1677 }
1678 else
1679 {
1680 sl_strlcpy (sh.host.name, canonical, SH_PATHBUF);
1681 SH_FREE(canonical);
1682 }
1683
1684 /* check whether it looks like a FQDN
1685 */
1686 len = sl_strlen(sh.host.name);
1687 ddot = 0;
1688 for (i = 0; i < len; ++i)
1689 if (sh.host.name[i] == '.') ++ddot;
1690
1691 if (ddot == 0)
1692 {
1693 dlog(1, FIL__, __LINE__,
1694 _("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"),
1695 hostname, sh.host.name);
1696 sl_strlcpy (sh.host.name, numeric, SH_PATHBUF);
1697 SL_RET0(_("sh_unix_localhost"));
1698 }
1699
1700 if (sh_ipvx_is_numeric(sh.host.name))
1701 {
1702 dlog(1, FIL__, __LINE__,
1703 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nRather, it resolves this to %s.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1704 hostname, sh.host.name);
1705 }
1706
1707 SL_RET0(_("sh_unix_localhost"));
1708}
1709
1710#else
1711
1712/*
1713 * --FreeBSD code
1714 */
1715#if defined(HAVE_UNAME)
1716#include <sys/utsname.h>
1717#endif
1718void sh_unix_localhost()
1719{
1720#if defined(HAVE_UNAME)
1721 struct utsname buf;
1722#endif
1723 int i;
1724 int ddot;
1725 int len;
1726 char hostname[1024];
1727 char numeric[SH_IP_BUF];
1728 char * canonical;
1729
1730 SL_ENTER(_("sh_unix_localhost"));
1731
1732#if defined(HAVE_UNAME)
1733 (void) uname (&buf);
1734 /* flawfinder: ignore */ /* ff bug, ff sees system() */
1735 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1736 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1737 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1738#endif
1739
1740 (void) gethostname (hostname, 1024);
1741 hostname[1023] = '\0';
1742
1743 canonical = sh_ipvx_canonical(hostname, numeric, sizeof(numeric));
1744
1745 if (canonical == NULL)
1746 {
1747 sl_strlcpy (sh.host.name, hostname, SH_PATHBUF);
1748 sh_tolower (sh.host.name);
1749 }
1750 else
1751 {
1752 sl_strlcpy (sh.host.name, canonical, SH_PATHBUF);
1753 SH_FREE(canonical);
1754 }
1755
1756 /* check whether it looks like a FQDN
1757 */
1758 len = sl_strlen(sh.host.name);
1759 ddot = 0;
1760 for (i = 0; i < len; ++i)
1761 if (sh.host.name[i] == '.') ++ddot;
1762 if (ddot == 0)
1763 {
1764 dlog(1, FIL__, __LINE__,
1765 _("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"),
1766 hostname, sh.host.name);
1767 sl_strlcpy (sh.host.name, numeric, SH_PATHBUF);
1768 SL_RET0(_("sh_unix_localhost"));
1769 }
1770
1771 if (sh_ipvx_is_numeric(sh.host.name))
1772 {
1773 dlog(1, FIL__, __LINE__,
1774 _("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"),
1775 hostname, sh.host.name);
1776 }
1777
1778 SL_RET0(_("sh_unix_localhost"));
1779}
1780#endif
1781
1782
1783void sh_unix_memlock()
1784{
1785 SL_ENTER(_("sh_unix_memlock"));
1786
1787 /* do this before dropping privileges
1788 */
1789#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
1790 if (skey->mlock_failed == SL_FALSE)
1791 {
1792 if ( (-1) == sh_unix_mlock( FIL__, __LINE__,
1793 (char *) skey, sizeof (sh_key_t)) )
1794 {
1795 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1796 skey->mlock_failed = SL_TRUE;
1797 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1798 }
1799 }
1800#else
1801 if (skey->mlock_failed == SL_FALSE)
1802 {
1803 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1804 skey->mlock_failed = SL_TRUE;
1805 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1806 }
1807#endif
1808
1809 SL_RET0(_("sh_unix_memlock"));
1810}
1811
1812#ifdef SH_WITH_SERVER
1813char * chroot_dir = NULL;
1814
1815int sh_unix_set_chroot(const char * str)
1816{
1817 size_t len;
1818 static int block = 0;
1819
1820 if (block == 1)
1821 return 0;
1822
1823 if (str && *str == '/')
1824 {
1825 len = strlen(str) + 1;
1826 chroot_dir = malloc(strlen(str) + 1); /* only once */
1827 if (!chroot_dir)
1828 {
1829 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1830 return 1;
1831 }
1832 sl_strlcpy(chroot_dir, str, len);
1833 block = 1;
1834 return 0;
1835 }
1836 return 1;
1837}
1838
1839int sh_unix_chroot(void)
1840{
1841 int status;
1842
1843 if (chroot_dir != NULL)
1844 {
1845 status = retry_aud_chdir(FIL__, __LINE__, chroot_dir);
1846 if ( (-1) == status )
1847 {
1848 char errbuf[SH_ERRBUF_SIZE];
1849 status = errno;
1850 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
1851 sh_error_message (status, errbuf, sizeof(errbuf)), chroot_dir);
1852 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1853 }
1854 /* flawfinder: ignore */
1855 return (chroot(chroot_dir));
1856 }
1857 return 0;
1858}
1859/* #ifdef SH_WITH_SERVER */
1860#else
1861int sh_unix_chroot(void) { return 0; }
1862#endif
1863
1864/* daemon mode
1865 */
1866static int block_setdeamon = 0;
1867
1868int sh_unix_setdeamon(const char * dummy)
1869{
1870 int res = 0;
1871
1872 SL_ENTER(_("sh_unix_setdeamon"));
1873
1874 if (block_setdeamon != 0)
1875 SL_RETURN((0),_("sh_unix_setdeamon"));
1876
1877 if (dummy == NULL)
1878 sh.flag.isdaemon = ON;
1879 else
1880 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1881
1882 if (sh.flag.opts == S_TRUE)
1883 block_setdeamon = 1;
1884
1885 SL_RETURN(res, _("sh_unix_setdeamon"));
1886}
1887#if defined(HAVE_LIBPRELUDE)
1888#include "sh_prelude.h"
1889#endif
1890
1891int sh_unix_setnodeamon(const char * dummy)
1892{
1893 int res = 0;
1894
1895 SL_ENTER(_("sh_unix_setnodeamon"));
1896
1897 if (block_setdeamon != 0)
1898 SL_RETURN((0),_("sh_unix_setmodeamon"));
1899
1900 if (dummy == NULL)
1901 sh.flag.isdaemon = OFF;
1902 else
1903 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1904
1905 if (sh.flag.opts == S_TRUE)
1906 block_setdeamon = 1;
1907
1908 SL_RETURN(res, _("sh_unix_setnodeamon"));
1909}
1910
1911int sh_unix_init(int goDaemon)
1912{
1913 int status;
1914 uid_t uid;
1915 pid_t oldpid = getpid();
1916#if defined(SH_WITH_SERVER)
1917 extern int sh_socket_open_int (void);
1918#endif
1919 char errbuf[SH_ERRBUF_SIZE];
1920
1921 extern void sh_kill_sub();
1922
1923 SL_ENTER(_("sh_unix_init"));
1924
1925 /* fork twice, exit the parent process
1926 */
1927 if (goDaemon == 1) {
1928
1929 switch (aud_fork(FIL__, __LINE__)) {
1930 case 0: break; /* child process continues */
1931 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1932 default: /* parent process exits */
1933 sh_kill_sub();
1934 aud__exit(FIL__, __LINE__, 0);
1935 }
1936
1937 /* Child processes do not inherit page locks across a fork.
1938 * Error in next fork would return in this (?) thread of execution.
1939 */
1940 sh_unix_memlock();
1941
1942 setsid(); /* should not fail */
1943 sh.pid = (UINT64) getpid();
1944
1945 switch (aud_fork(FIL__, __LINE__)) {
1946 case 0: break; /* child process continues */
1947 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1948 default: /* parent process exits */
1949 sh_kill_sub();
1950 aud__exit(FIL__, __LINE__, 0);
1951 }
1952
1953 /* Child processes do not inherit page locks across a fork.
1954 */
1955 sh_unix_memlock();
1956 sh.pid = (UINT64) getpid();
1957
1958 } else {
1959 setsid(); /* should not fail */
1960 }
1961
1962 /* set working directory
1963 */
1964#ifdef SH_PROFILE
1965 status = 0;
1966#else
1967 status = retry_aud_chdir(FIL__, __LINE__, "/");
1968#endif
1969 if ( (-1) == status )
1970 {
1971 status = errno;
1972 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
1973 sh_error_message (status, errbuf, sizeof(errbuf)), "/");
1974 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1975 }
1976
1977 /* reset timers
1978 */
1979 sh_unix_resettimer();
1980
1981 /* signal handlers
1982 */
1983 sh_unix_resetsignals();
1984#if defined(SCREW_IT_UP)
1985 sh_sigtrap_prepare();
1986#endif
1987 sh_unix_siginstall (goDaemon);
1988
1989 /* set file creation mask
1990 */
1991 (void) umask (0); /* should not fail */
1992
1993 /* set resource limits to maximum, and
1994 * core dump size to zero
1995 */
1996 sh_unix_setlimits();
1997
1998 /* zero out the environment (like PATH='\0')
1999 */
2000 sh_unix_zeroenv();
2001
2002 if (goDaemon == 1)
2003 {
2004 /* Close first tree file descriptors
2005 */
2006 sl_close_fd (FIL__, __LINE__, 0); /* if running as daemon */
2007 sl_close_fd (FIL__, __LINE__, 1); /* if running as daemon */
2008 sl_close_fd (FIL__, __LINE__, 2); /* if running as daemon */
2009
2010 /* Enable full error logging
2011 */
2012 sh_error_only_stderr (S_FALSE);
2013
2014 /* open first three streams to /dev/null
2015 */
2016 status = aud_open(FIL__, __LINE__, SL_NOPRIV, _("/dev/null"), O_RDWR, 0);
2017 if (status < 0)
2018 {
2019 status = errno;
2020 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2021 sh_error_message(status, errbuf, sizeof(errbuf)), _("open"));
2022 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2023 }
2024
2025 status = retry_aud_dup(FIL__, __LINE__, 0);
2026 if (status >= 0)
2027 retry_aud_dup(FIL__, __LINE__, 0);
2028
2029 if (status < 0)
2030 {
2031 status = errno;
2032 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2033 sh_error_message(status, errbuf, sizeof(errbuf)), _("dup"));
2034 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2035 }
2036
2037 sh_error_enable_unsafe (S_TRUE);
2038#if defined(HAVE_LIBPRELUDE)
2039 sh_prelude_reset ();
2040#endif
2041
2042 /* --- wait until parent has exited ---
2043 */
2044 while (1 == 1)
2045 {
2046 errno = 0;
2047 if (0 > aud_kill (FIL__, __LINE__, oldpid, 0) && errno == ESRCH)
2048 {
2049 break;
2050 }
2051 retry_msleep(0, 1);
2052 }
2053
2054 /* write PID file
2055 */
2056 status = sh_unix_write_pid_file();
2057 if (status < 0)
2058 {
2059 sl_get_euid(&uid);
2060 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_PIDFILE,
2061 (long) uid, sh.srvlog.alt);
2062 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2063 }
2064#if defined(SH_WITH_SERVER)
2065 sh_socket_open_int ();
2066#endif
2067 }
2068 else
2069 {
2070 sh_error_enable_unsafe (S_TRUE);
2071#if defined(HAVE_LIBPRELUDE)
2072 sh_prelude_reset ();
2073#endif
2074#if defined(SH_WITH_SERVER)
2075 sh_socket_open_int ();
2076#endif
2077 }
2078
2079 /* chroot (this is a no-op if no chroot dir is specified
2080 */
2081 status = sh_unix_chroot();
2082 if (status < 0)
2083 {
2084 status = errno;
2085 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2086 sh_error_message(status, errbuf, sizeof(errbuf)), _("chroot"));
2087 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2088 }
2089
2090 /* drop capabilities
2091 */
2092 sl_drop_cap();
2093
2094 SL_RETURN((0),_("sh_unix_init"));
2095}
2096
2097/* --- run a command, securely --- */
2098
2099int sh_unix_run_command (const char * str)
2100{
2101 pid_t pid;
2102 char * arg[4];
2103 char * env[5];
2104 char * path = sh_util_strdup(_("/bin/sh"));
2105
2106 int status = -1;
2107
2108 arg[0] = sh_util_strdup(_("/bin/sh"));
2109 arg[1] = sh_util_strdup(_("-c"));
2110 arg[2] = sh_util_strdup(str);
2111 arg[3] = NULL;
2112
2113 env[0] = sh_util_strdup(_("PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/ucb"));
2114 env[1] = sh_util_strdup(_("SHELL=/bin/sh"));
2115 env[2] = sh_util_strdup(_("IFS= \t\n"));
2116 if (getenv("TZ")) { /* flawfinder: ignore */
2117 char * tz = sh_util_strdup(getenv("TZ")); /* flawfinder: ignore */
2118 size_t tzlen = strlen(tz);
2119 if (SL_TRUE == sl_ok_adds (4, tzlen)) {
2120 env[3] = SH_ALLOC(4+tzlen);
2121 sl_strlcpy(env[3], "TZ=", 4);
2122 sl_strlcat(env[3], tz , 4+tzlen);
2123 } else {
2124 env[3] = NULL;
2125 }
2126 } else {
2127 env[3] = NULL;
2128 }
2129 env[4] = NULL;
2130
2131 pid = fork();
2132
2133 if (pid == (pid_t)(-1))
2134 {
2135 return -1;
2136 }
2137
2138 else if (pid == 0) /* child */
2139 {
2140 memset(skey, 0, sizeof(sh_key_t));
2141 (void) umask(S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
2142 sh_unix_closeall (3, -1, SL_TRUE); /* in child process */
2143 execve(path, arg, env);
2144 _exit(EXIT_FAILURE);
2145 }
2146
2147 else /* parent */
2148 {
2149 int r;
2150
2151 while((r = waitpid(pid, &status, WUNTRACED)) != pid && r != -1) ;
2152
2153#if !defined(USE_UNO)
2154 if (r == -1 || !WIFEXITED(status))
2155 {
2156 status = -1;
2157 }
2158 else
2159 {
2160 status = WEXITSTATUS(status);
2161 }
2162#endif
2163 }
2164
2165 return status;
2166}
2167
2168/********************************************************
2169 *
2170 * TIME
2171 *
2172 ********************************************************/
2173
2174/* Figure out the time offset of the current timezone
2175 * in a portable way.
2176 */
2177char * t_zone(const time_t * xx)
2178{
2179 struct tm aa;
2180 struct tm bb;
2181
2182 int sign = 0;
2183 int diff = 0;
2184 int hh, mm;
2185 static char tz[64];
2186
2187 SL_ENTER(_("t_zone"));
2188
2189#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2190 gmtime_r (xx, &aa);
2191#else
2192 memcpy (&aa, gmtime(xx), sizeof(struct tm));
2193#endif
2194
2195#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2196 localtime_r (xx, &bb);
2197#else
2198 memcpy (&bb, localtime(xx), sizeof(struct tm));
2199#endif
2200
2201 /* Check for datum wrap-around.
2202 */
2203 if (aa.tm_year < bb.tm_year)
2204 sign = (-1);
2205 else if (aa.tm_mon < bb.tm_mon)
2206 sign = (-1);
2207 else if (aa.tm_mday < bb.tm_mday)
2208 sign = (-1);
2209 else if (bb.tm_year < aa.tm_year)
2210 sign = ( 1);
2211 else if (bb.tm_mon < aa.tm_mon)
2212 sign = ( 1);
2213 else if (bb.tm_mday < aa.tm_mday)
2214 sign = ( 1);
2215
2216 diff = aa.tm_hour * 60 + aa.tm_min;
2217 diff = (bb.tm_hour * 60 + bb.tm_min) - diff;
2218 diff = diff - (sign * 24 * 60); /* datum wrap-around correction */
2219 hh = diff / 60;
2220 mm = diff - (hh * 60);
2221 sprintf (tz, _("%+03d%02d"), hh, mm); /* known to fit */
2222
2223 SL_RETURN(tz, _("t_zone"));
2224}
2225
2226unsigned long sh_unix_longtime ()
2227{
2228 return ((unsigned long)time(NULL));
2229}
2230
2231#ifdef HAVE_GETTIMEOFDAY
2232unsigned long sh_unix_notime ()
2233{
2234 struct timeval tv;
2235
2236 gettimeofday (&tv, NULL);
2237
2238 return ((unsigned long)(tv.tv_sec + tv.tv_usec * 10835 + getpid() + getppid()));
2239
2240}
2241#endif
2242
2243static int count_dev_time = 0;
2244
2245void reset_count_dev_time(void)
2246{
2247 count_dev_time = 0;
2248 return;
2249}
2250
2251int sh_unix_settimeserver (const char * address)
2252{
2253
2254 SL_ENTER(_("sh_unix_settimeserver"));
2255
2256 if (address != NULL && count_dev_time < 2
2257 && sl_strlen(address) < SH_PATHBUF)
2258 {
2259 if (count_dev_time == 0)
2260 sl_strlcpy (sh.srvtime.name, address, SH_PATHBUF);
2261 else
2262 sl_strlcpy (sh.srvtime.alt, address, SH_PATHBUF);
2263
2264 ++count_dev_time;
2265 SL_RETURN((0), _("sh_unix_settimeserver"));
2266 }
2267 SL_RETURN((-1), _("sh_unix_settimeserver"));
2268}
2269
2270
2271#ifdef HAVE_NTIME
2272#define UNIXEPOCH 2208988800UL /* difference between Unix time and net time
2273 * The UNIX EPOCH starts in 1970.
2274 */
2275#include <sys/socket.h>
2276#include <netinet/in.h>
2277#include <arpa/inet.h>
2278#include <netdb.h>
2279#include <ctype.h>
2280#endif
2281
2282/* Timeserver service. */
2283/* define is missing on HP-UX 10.20 */
2284#ifndef IPPORT_TIMESERVER
2285#define IPPORT_TIMESERVER 37
2286#endif
2287
2288char * sh_unix_time (time_t thetime, char * buffer, size_t len)
2289{
2290
2291 int status;
2292 char AsciiTime[81]; /* local time */
2293 time_t time_now;
2294 struct tm * time_ptr;
2295#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2296 struct tm time_tm;
2297#endif
2298#ifdef SH_USE_XML
2299 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2300#else
2301 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2302#endif
2303
2304#ifdef HAVE_NTIME
2305 int fd; /* network file descriptor */
2306 u_char net_time[4]; /* remote time in network format */
2307 static int failerr = 0; /* no net time */
2308 int fail = 0; /* no net time */
2309 int errflag;
2310 char errmsg[256];
2311 char error_call[SH_MINIBUF];
2312 int error_num;
2313#endif
2314
2315 SL_ENTER(_("sh_unix_time"));
2316
2317#ifdef HAVE_NTIME
2318 if (thetime == 0)
2319 {
2320 if (sh.srvtime.name[0] == '\0')
2321 {
2322 fail = 1;
2323 (void) time (&time_now);
2324 }
2325 else /* have a timeserver address */
2326 {
2327 /* don't call timeserver more than once per second */
2328 static time_t time_old = 0;
2329 time_t time_new;
2330 static time_t time_saved = 0;
2331 (void) time (&time_new);
2332 if ((time_new == time_old) && (time_saved != 0))
2333 {
2334 time_now = time_saved;
2335 goto end;
2336 }
2337 time_old = time_new;
2338
2339
2340 fd = connect_port_2 (sh.srvtime.name, sh.srvtime.alt,
2341 IPPORT_TIMESERVER,
2342 error_call, &error_num, errmsg, sizeof(errmsg));
2343 if (fd >= 0)
2344 {
2345 if (4 != read_port (fd, (char *) net_time, 4, &errflag, 2))
2346 {
2347 fail = 1;
2348 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2349 MSG_E_NLOST,
2350 _("time"), sh.srvtime.name);
2351 }
2352 sl_close_fd(FIL__, __LINE__, fd);
2353 }
2354 else
2355 {
2356 sh_error_handle ((-1), FIL__, __LINE__, error_num,
2357 MSG_E_NET, errmsg, error_call,
2358 _("time"), sh.srvtime.name);
2359 fail = 1;
2360 }
2361
2362 if (fail == 0)
2363 {
2364 unsigned long ltmp;
2365 UINT32 ttmp;
2366 memcpy(&ttmp, net_time, sizeof(UINT32)); ltmp = ttmp;
2367 time_now = ntohl(ltmp) - UNIXEPOCH;
2368 time_saved = time_now;
2369
2370 if (failerr == 1) {
2371 failerr = 0;
2372 sh_error_handle ((-1), FIL__, __LINE__, 0,
2373 MSG_E_NEST,
2374 _("time"), sh.srvtime.name);
2375 }
2376 }
2377 else
2378 {
2379 (void) time (&time_now);
2380 time_saved = 0;
2381
2382 if (failerr == 0)
2383 {
2384 failerr = 1;
2385 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2386 MSG_SRV_FAIL,
2387 _("time"), sh.srvtime.name);
2388 }
2389 }
2390 end:
2391 ; /* 'label at end of compound statement' */
2392 }
2393 }
2394 else
2395 {
2396 time_now = thetime;
2397 }
2398
2399 /* #ifdef HAVE_NTIME */
2400#else
2401
2402 if (thetime == 0)
2403 {
2404 (void) time (&time_now);
2405 }
2406 else
2407 {
2408 time_now = thetime;
2409 }
2410
2411 /* #ifdef HAVE_NTIME */
2412#endif
2413
2414 if (time_now == (-1) )
2415 {
2416 sl_strlcpy(buffer, _(deftime), len);
2417 SL_RETURN(buffer, _("sh_unix_time"));
2418 }
2419 else
2420 {
2421#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2422 time_ptr = localtime_r (&time_now, &time_tm);
2423#else
2424 time_ptr = localtime (&time_now);
2425#endif
2426 }
2427 if (time_ptr != NULL)
2428 {
2429 status = strftime (AsciiTime, sizeof(AsciiTime),
2430#ifdef SH_USE_XML
2431 _("%Y-%m-%dT%H:%M:%S%%s"),
2432#else
2433 _("[%Y-%m-%dT%H:%M:%S%%s]"),
2434#endif
2435 time_ptr);
2436
2437 sl_snprintf(buffer, len, AsciiTime, t_zone(&time_now));
2438
2439 if ( (status == 0) || (status == sizeof(AsciiTime)) )
2440 {
2441 sl_strlcpy(buffer, _(deftime), len);
2442 SL_RETURN( buffer, _("sh_unix_time"));
2443 }
2444 else
2445 {
2446 SL_RETURN(buffer, _("sh_unix_time"));
2447 }
2448 }
2449
2450 /* last resort
2451 */
2452 sl_strlcpy(buffer, _(deftime), len);
2453 SL_RETURN( buffer, _("sh_unix_time"));
2454}
2455
2456static int sh_unix_use_localtime = S_FALSE;
2457
2458/* whether to use localtime for file timesatams in logs
2459 */
2460int sh_unix_uselocaltime (const char * c)
2461{
2462 int i;
2463 SL_ENTER(_("sh_unix_uselocaltime"));
2464 i = sh_util_flagval(c, &(sh_unix_use_localtime));
2465
2466 SL_RETURN(i, _("sh_unix_uselocaltime"));
2467}
2468
2469char * sh_unix_gmttime (time_t thetime, char * buffer, size_t len)
2470{
2471
2472 int status;
2473
2474 struct tm * time_ptr;
2475#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS)
2476 struct tm time_tm;
2477#endif
2478 char AsciiTime[81]; /* GMT time */
2479#ifdef SH_USE_XML
2480 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2481#else
2482 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2483#endif
2484
2485 SL_ENTER(_("sh_unix_gmttime"));
2486
2487 if (sh_unix_use_localtime == S_FALSE)
2488 {
2489#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2490 time_ptr = gmtime_r (&thetime, &time_tm);
2491#else
2492 time_ptr = gmtime (&thetime);
2493#endif
2494 }
2495 else
2496 {
2497#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2498 time_ptr = localtime_r (&thetime, &time_tm);
2499#else
2500 time_ptr = localtime (&thetime);
2501#endif
2502 }
2503 if (time_ptr != NULL)
2504 {
2505 status = strftime (AsciiTime, 80,
2506#ifdef SH_USE_XML
2507 _("%Y-%m-%dT%H:%M:%S"),
2508#else
2509 _("[%Y-%m-%dT%H:%M:%S]"),
2510#endif
2511 time_ptr);
2512
2513 if ( (status == 0) || (status == 80) )
2514 sl_strlcpy(buffer, _(deftime), len);
2515 else
2516 sl_strlcpy(buffer, AsciiTime, len);
2517 SL_RETURN( buffer, _("sh_unix_gmttime"));
2518 }
2519
2520 /* last resort
2521 */
2522 sl_strlcpy(buffer, _(deftime), len);
2523 SL_RETURN( buffer, _("sh_unix_gmttime"));
2524}
2525
2526
2527char * sh_unix_getUIDdir (int level, uid_t uid, char * out, size_t len)
2528{
2529 struct passwd * tempres;
2530 int status = 0;
2531
2532#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2533 struct passwd pwd;
2534 char * buffer;
2535#endif
2536 char errbuf[SH_ERRBUF_SIZE];
2537
2538 SL_ENTER(_("sh_unix_getUIDdir"));
2539
2540#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2541 buffer = SH_ALLOC(SH_PWBUF_SIZE);
2542 sh_getpwuid_r(uid, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
2543#else
2544 errno = 0;
2545 tempres = sh_getpwuid(uid);
2546 status = errno;
2547#endif
2548
2549 if (tempres == NULL) {
2550 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2551 sh_error_message(status, errbuf, sizeof(errbuf)),
2552 _("getpwuid"), (long) uid, _("completely missing"));
2553#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2554 SH_FREE(buffer);
2555#endif
2556 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2557 }
2558
2559 if (tempres->pw_dir != NULL) {
2560 sl_strlcpy(out, tempres->pw_dir, len);
2561#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2562 SH_FREE(buffer);
2563#endif
2564 SL_RETURN( out, _("sh_unix_getUIDdir"));
2565 } else {
2566 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2567 sh_error_message(status, errbuf, sizeof(errbuf)),
2568 _("getpwuid"), (long) uid, _("pw_dir"));
2569#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2570 SH_FREE(buffer);
2571#endif
2572 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2573 }
2574}
2575
2576/* ------------------- Caching ----------------*/
2577#include "zAVLTree.h"
2578
2579#define CACHE_GID 0
2580#define CACHE_UID 1
2581
2582struct user_id {
2583 char * name;
2584 uid_t id;
2585 struct user_id * next;
2586};
2587
2588static struct user_id * uid_list = NULL;
2589static struct user_id * gid_list = NULL;
2590
2591SH_MUTEX_STATIC(mutex_cache, PTHREAD_MUTEX_INITIALIZER);
2592
2593static void sh_userid_free(struct user_id * item)
2594{
2595 while (item)
2596 {
2597 struct user_id * user = item;
2598 item = item->next;
2599
2600 SH_FREE(user->name);
2601 SH_FREE(user);
2602 }
2603 return;
2604}
2605
2606void sh_userid_destroy ()
2607{
2608 struct user_id * tmp_uid;
2609 struct user_id * tmp_gid;
2610
2611 SH_MUTEX_LOCK_UNSAFE(mutex_cache);
2612 tmp_gid = gid_list;
2613 gid_list = NULL;
2614 tmp_uid = uid_list;
2615 uid_list = NULL;
2616 SH_MUTEX_UNLOCK_UNSAFE(mutex_cache);
2617
2618 sh_userid_free(tmp_uid);
2619 sh_userid_free(tmp_gid);
2620 return;
2621}
2622
2623static void sh_userid_additem(struct user_id * list, struct user_id * item)
2624{
2625 while (list && list->next)
2626 list = list->next;
2627 list->next = item;
2628 return;
2629}
2630
2631static void sh_userid_add(uid_t id, char * username, int which)
2632{
2633 size_t len;
2634 struct user_id * user = SH_ALLOC(sizeof(struct user_id));
2635
2636 if (username)
2637 len = strlen(username) + 1;
2638 else
2639 len = 1;
2640
2641 user->name = SH_ALLOC(len);
2642 user->id = id;
2643 if (username)
2644 sl_strlcpy(user->name, username, len);
2645 else
2646 user->name[0] = '\0';
2647 user->next = NULL;
2648
2649 SH_MUTEX_LOCK(mutex_cache);
2650 if (which == CACHE_UID)
2651 {
2652 if (!uid_list)
2653 uid_list = user;
2654 else
2655 sh_userid_additem(uid_list, user);
2656 }
2657 else
2658 {
2659 if (!gid_list)
2660 gid_list = user;
2661 else
2662 sh_userid_additem(gid_list, user);
2663 }
2664 SH_MUTEX_UNLOCK(mutex_cache);
2665
2666 return;
2667}
2668
2669static char * sh_userid_search(struct user_id * list, uid_t id)
2670{
2671 while (list)
2672 {
2673 if (list->id == id)
2674 return list->name;
2675 list = list->next;
2676 }
2677 return NULL;
2678}
2679
2680static char * sh_userid_get (uid_t id, int which, char * out, size_t len)
2681{
2682 char * user = NULL;
2683
2684 SH_MUTEX_LOCK_UNSAFE(mutex_cache);
2685 if (which == CACHE_UID)
2686 user = sh_userid_search(uid_list, id);
2687 else
2688 user = sh_userid_search(gid_list, id);
2689 if (user)
2690 {
2691 sl_strlcpy(out, user, len);
2692 user = out;
2693 }
2694 SH_MUTEX_UNLOCK_UNSAFE(mutex_cache);
2695
2696 return user;
2697}
2698
2699/* --------- end caching code --------- */
2700
2701char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len)
2702{
2703 struct passwd * tempres;
2704#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2705 struct passwd pwd;
2706 char * buffer;
2707#endif
2708 int status = 0;
2709 char errbuf[SH_ERRBUF_SIZE];
2710 char * tmp;
2711
2712 SL_ENTER(_("sh_unix_getUIDname"));
2713
2714 tmp = sh_userid_get(uid, CACHE_UID, out, len);
2715
2716 if (tmp)
2717 {
2718 if (tmp[0] != '\0')
2719 {
2720 SL_RETURN( out, _("sh_unix_getUIDname"));
2721 }
2722 else
2723 {
2724 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2725 }
2726 }
2727
2728#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2729 buffer = SH_ALLOC(SH_PWBUF_SIZE);
2730 sh_getpwuid_r(uid, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
2731#else
2732 errno = 0;
2733 tempres = sh_getpwuid(uid);
2734 status = errno;
2735#endif
2736
2737 if (tempres == NULL)
2738 {
2739 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2740 sh_error_message(status, errbuf, sizeof(errbuf)),
2741 _("getpwuid"), (long) uid, _("completely missing"));
2742#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2743 SH_FREE(buffer);
2744#endif
2745 sh_userid_add(uid, NULL, CACHE_UID);
2746 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2747 }
2748
2749
2750 if (tempres->pw_name != NULL)
2751 {
2752
2753 sl_strlcpy(out, tempres->pw_name, len);
2754 sh_userid_add(uid, out, CACHE_UID);
2755
2756#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2757 SH_FREE(buffer);
2758#endif
2759
2760 SL_RETURN( out, _("sh_unix_getUIDname"));
2761 }
2762 else
2763 {
2764 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2765 sh_error_message(status, errbuf, sizeof(errbuf)),
2766 _("getpwuid"), (long) uid, _("pw_user"));
2767#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2768 SH_FREE(buffer);
2769#endif
2770 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2771 }
2772 /* notreached */
2773}
2774
2775char * sh_unix_getGIDname (int level, gid_t gid, char * out, size_t len)
2776{
2777 struct group * tempres;
2778 int status = 0;
2779
2780#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2781 struct group grp;
2782 char * buffer;
2783#endif
2784 char errbuf[SH_ERRBUF_SIZE];
2785 char * tmp;
2786
2787 SL_ENTER(_("sh_unix_getGIDname"));
2788
2789 tmp = sh_userid_get((uid_t)gid, CACHE_GID, out, len);
2790
2791 if (tmp)
2792 {
2793 if (tmp[0] != '\0')
2794 {
2795 SL_RETURN( out, _("sh_unix_getGIDname"));
2796 }
2797 else
2798 {
2799 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2800 }
2801 }
2802
2803#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2804 buffer = SH_ALLOC(SH_GRBUF_SIZE);
2805 status = sh_getgrgid_r(gid, &grp, buffer, SH_GRBUF_SIZE, &tempres);
2806#else
2807 errno = 0;
2808 tempres = sh_getgrgid(gid);
2809 status = errno;
2810#endif
2811
2812 if (tempres == NULL)
2813 {
2814 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
2815 sh_error_message(status, errbuf, sizeof(errbuf)),
2816 _("getgrgid"), (long) gid, _("completely missing"));
2817
2818#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2819 SH_FREE(buffer);
2820#endif
2821
2822 sh_userid_add(gid, NULL, CACHE_GID);
2823 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2824 }
2825
2826 if (tempres->gr_name != NULL)
2827 {
2828
2829 sl_strlcpy(out, tempres->gr_name, len);
2830 sh_userid_add((uid_t)gid, out, CACHE_GID);
2831
2832#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2833 SH_FREE(buffer);
2834#endif
2835
2836 SL_RETURN( out, _("sh_unix_getGIDname"));
2837 }
2838 else
2839 {
2840 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
2841 sh_error_message(status, errbuf, sizeof(errbuf)),
2842 _("getgrgid"), (long) gid, _("gr_name"));
2843
2844#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2845 SH_FREE(buffer);
2846#endif
2847
2848 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2849 }
2850 /* notreached */
2851}
2852
2853int sh_unix_getUser ()
2854{
2855 char * p;
2856 uid_t seuid, sruid;
2857 char user[USER_MAX];
2858 char dir[SH_PATHBUF];
2859
2860 SL_ENTER(_("sh_unix_getUser"));
2861
2862 seuid = geteuid();
2863
2864 sh.effective.uid = seuid;
2865
2866 p = sh_unix_getUIDdir (SH_ERR_ERR, seuid, dir, sizeof(dir));
2867
2868 if (p == NULL)
2869 SL_RETURN((-1), _("sh_unix_getUser"));
2870 else
2871 {
2872 if (sl_strlen(p) >= SH_PATHBUF) {
2873 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2874 _("getpwuid"), (long) seuid, _("pw_home"));
2875 SL_RETURN((-1), _("sh_unix_getUser"));
2876 } else {
2877 sl_strlcpy ( sh.effective.home, p, SH_PATHBUF);
2878 }
2879 }
2880
2881 sruid = getuid();
2882
2883 sh.real.uid = sruid;
2884
2885 p = sh_unix_getUIDname (SH_ERR_ERR, sruid, user, sizeof(user));
2886 if (p == NULL)
2887 SL_RETURN((-1), _("sh_unix_getUser"));
2888 else
2889 {
2890 if (sl_strlen(p) >= USER_MAX) {
2891 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2892 _("getpwuid"), (long) sruid, _("pw_user"));
2893 SL_RETURN((-1), _("sh_unix_getUser"));
2894 } else {
2895 sl_strlcpy ( sh.real.user, p, USER_MAX);
2896 }
2897 }
2898
2899 p = sh_unix_getUIDdir (SH_ERR_ERR, sruid, dir, sizeof(dir));
2900
2901 if (p == NULL)
2902 SL_RETURN((-1), _("sh_unix_getUser"));
2903 else
2904 {
2905 if (sl_strlen(p) >= SH_PATHBUF) {
2906 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2907 _("getpwuid"), (long) sruid, _("pw_home"));
2908 SL_RETURN((-1), _("sh_unix_getUser"));
2909 } else {
2910 sl_strlcpy ( sh.real.home, p, SH_PATHBUF);
2911 }
2912 }
2913
2914 SL_RETURN((0), _("sh_unix_getUser"));
2915
2916 /* notreached */
2917}
2918
2919
2920int sh_unix_getline (SL_TICKET fd, char * line, int sizeofline)
2921{
2922 register int count;
2923 register int n = 0;
2924 char c;
2925
2926 SL_ENTER(_("sh_unix_getline"));
2927
2928 if (sizeofline < 2) {
2929 line[0] = '\0';
2930 SL_RETURN((0), _("sh_unix_getline"));
2931 }
2932
2933 --sizeofline;
2934
2935 while (n < sizeofline) {
2936
2937 count = sl_read (fd, &c, 1);
2938
2939 /* end of file
2940 */
2941 if (count < 1) {
2942 line[n] = '\0';
2943 n = -1;
2944 break;
2945 }
2946
2947 if (/* c != '\0' && */ c != '\n') {
2948 line[n] = c;
2949 ++n;
2950 } else if (c == '\n') {
2951 if (n > 0) {
2952 line[n] = '\0';
2953 break;
2954 } else {
2955 line[n] = '\n'; /* get newline only if only char on line */
2956 ++n;
2957 line[n] = '\0';
2958 break;
2959 }
2960 } else {
2961 line[n] = '\0';
2962 break;
2963 }
2964
2965 }
2966
2967
2968 line[sizeofline] = '\0'; /* make sure line is terminated */
2969 SL_RETURN((n), _("sh_unix_getline"));
2970}
2971
2972
2973#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
2974
2975/**************************************************************
2976 *
2977 * --- FILE INFO ---
2978 *
2979 **************************************************************/
2980
2981#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
2982
2983#if defined(__linux__)
2984
2985/* --- Determine ext2fs file attributes. ---
2986 */
2987#include <sys/ioctl.h>
2988#if defined(HAVE_EXT2FS_EXT2_FS_H)
2989#include <ext2fs/ext2_fs.h>
2990#else
2991#include <linux/ext2_fs.h>
2992#endif
2993
2994/* __linux__ includes */
2995#endif
2996
2997static
2998int sh_unix_getinfo_attr (char * name,
2999 unsigned long * flags,
3000 char * c_attr,
3001 int fd, struct stat * buf)
3002{
3003
3004/* TAKEN FROM:
3005 *
3006 * lsattr.c - List file attributes on an ext2 file system
3007 *
3008 * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
3009 * Laboratoire MASI, Institut Blaise Pascal
3010 * Universite Pierre et Marie Curie (Paris VI)
3011 *
3012 * This file can be redistributed under the terms of the GNU General
3013 * Public License
3014 */
3015
3016#ifdef HAVE_STAT_FLAGS
3017
3018 SL_ENTER(_("sh_unix_getinfo_attr"));
3019
3020 *flags = 0;
3021
3022 /* cast to void to avoid compiler warning about unused parameters */
3023 (void) fd;
3024 (void) name;
3025
3026#ifdef UF_NODUMP
3027 if (buf->st_flags & UF_NODUMP) {
3028 *flags |= UF_NODUMP;
3029 c_attr[0] = 'd';
3030 }
3031#endif
3032#ifdef UF_IMMUTABLE
3033 if (buf->st_flags & UF_IMMUTABLE) {
3034 *flags |= UF_IMMUTABLE;
3035 c_attr[1] = 'i';
3036 }
3037#endif
3038#ifdef UF_APPEND
3039 if (buf->st_flags & UF_APPEND) {
3040 *flags |= UF_APPEND;
3041 c_attr[2] = 'a';
3042 }
3043#endif
3044#ifdef UF_NOUNLINK
3045 if (buf->st_flags & UF_NOUNLINK) {
3046 *flags |= UF_NOUNLINK;
3047 c_attr[3] = 'u';
3048 }
3049#endif
3050#ifdef UF_OPAQUE
3051 if (buf->st_flags & UF_OPAQUE) {
3052 *flags |= UF_OPAQUE;
3053 c_attr[4] = 'o';
3054 }
3055#endif
3056#ifdef SF_ARCHIVED
3057 if (buf->st_flags & SF_ARCHIVED) {
3058 *flags |= SF_ARCHIVED;
3059 c_attr[5] = 'R';
3060 }
3061
3062#endif
3063#ifdef SF_IMMUTABLE
3064 if (buf->st_flags & SF_IMMUTABLE) {
3065 *flags |= SF_IMMUTABLE;
3066 c_attr[6] = 'I';
3067 }
3068#endif
3069#ifdef SF_APPEND
3070 if (buf->st_flags & SF_APPEND) {
3071 *flags |= SF_APPEND;
3072 c_attr[7] = 'A';
3073 }
3074#endif
3075#ifdef SF_NOUNLINK
3076 if (buf->st_flags & SF_NOUNLINK) {
3077 *flags |= SF_NOUNLINK;
3078 c_attr[8] = 'U';
3079 }
3080#endif
3081
3082 /* ! HAVE_STAT_FLAGS */
3083#else
3084
3085#ifdef HAVE_EXT2_IOCTLS
3086 int /* fd, */ r, f;
3087
3088 SL_ENTER(_("sh_unix_getinfo_attr"));
3089
3090 *flags = 0;
3091 (void) buf;
3092
3093 /* open() -> aud_open() R.Wichmann
3094 fd = aud_open (FIL__, __LINE__, SL_YESPRIV, name, O_RDONLY|O_NONBLOCK, 0);
3095 */
3096
3097 if (fd == -1 || name == NULL)
3098 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
3099
3100
3101 r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
3102 /* sl_close_fd (FIL__, __LINE__, fd); */
3103
3104 if (r == -1)
3105 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
3106
3107 if (f == 0)
3108 SL_RETURN(0, _("sh_unix_getinfo_attr"));
3109
3110 *flags = f;
3111
3112/* ! HAVE_EXT2_IOCTLS */
3113#else
3114
3115 SL_ENTER(_("sh_unix_getinfo_attr"));
3116
3117 *flags = 0; /* modified by R.Wichmann */
3118
3119/* ! HAVE_EXT2_IOCTLS */
3120#endif
3121/*
3122 * END
3123 *
3124 * lsattr.c - List file attributes on an ext2 file system
3125 */
3126
3127 if (*flags == 0)
3128 goto theend;
3129
3130#ifdef EXT2_SECRM_FL
3131 if ( (*flags & EXT2_SECRM_FL) != 0 ) c_attr[0] = 's';
3132#endif
3133#ifdef EXT2_UNRM_FL
3134 if ( (*flags & EXT2_UNRM_FL) != 0 ) c_attr[1] = 'u';
3135#endif
3136#ifdef EXT2_SYNC_FL
3137 if ( (*flags & EXT2_SYNC_FL) != 0 ) c_attr[2] = 'S';
3138#endif
3139#ifdef EXT2_IMMUTABLE_FL
3140 if ( (*flags & EXT2_IMMUTABLE_FL) != 0) c_attr[3] = 'i';
3141#endif
3142#ifdef EXT2_APPEND_FL
3143 if ( (*flags & EXT2_APPEND_FL) != 0 ) c_attr[4] = 'a';
3144#endif
3145#ifdef EXT2_NODUMP_FL
3146 if ( (*flags & EXT2_NODUMP_FL) != 0 ) c_attr[5] = 'd';
3147#endif
3148#ifdef EXT2_NOATIME_FL
3149 if ( (*flags & EXT2_NOATIME_FL) != 0) c_attr[6] = 'A';
3150#endif
3151#ifdef EXT2_COMPR_FL
3152 if ( (*flags & EXT2_COMPR_FL) != 0 ) c_attr[7] = 'c';
3153#endif
3154
3155#ifdef EXT2_TOPDIR_FL
3156 if ( (*flags & EXT2_TOPDIR_FL) != 0 ) c_attr[8] = 'T';
3157#endif
3158#ifdef EXT2_DIRSYNC_FL
3159 if ( (*flags & EXT2_DIRSYNC_FL) != 0 ) c_attr[9] = 'D';
3160#endif
3161#ifdef EXT2_NOTAIL_FL
3162 if ( (*flags & EXT2_NOTAIL_FL) != 0 ) c_attr[10] = 't';
3163#endif
3164#ifdef EXT2_JOURNAL_DATA_FL
3165 if ( (*flags & EXT2_JOURNAL_DATA_FL) != 0) c_attr[11] = 'j';
3166#endif
3167
3168 theend:
3169 /* ext2 */
3170#endif
3171
3172 c_attr[12] = '\0';
3173
3174 SL_RETURN(0, _("sh_unix_getinfo_attr"));
3175}
3176
3177/* defined(__linux__) || defined(HAVE_STAT_FLAGS) */
3178#endif
3179
3180/* determine file type
3181 */
3182static
3183int sh_unix_getinfo_type (struct stat * buf,
3184 ShFileType * type,
3185 char * c_mode)
3186{
3187 SL_ENTER(_("sh_unix_getinfo_type"));
3188
3189 if ( S_ISREG(buf->st_mode) ) {
3190 (*type) = SH_FILE_REGULAR;
3191 c_mode[0] = '-';
3192 }
3193 else if ( S_ISLNK(buf->st_mode) ) {
3194 (*type) = SH_FILE_SYMLINK;
3195 c_mode[0] = 'l';
3196 }
3197 else if ( S_ISDIR(buf->st_mode) ) {
3198 (*type) = SH_FILE_DIRECTORY;
3199 c_mode[0] = 'd';
3200 }
3201 else if ( S_ISCHR(buf->st_mode) ) {
3202 (*type) = SH_FILE_CDEV;
3203 c_mode[0] = 'c';
3204 }
3205 else if ( S_ISBLK(buf->st_mode) ) {
3206 (*type) = SH_FILE_BDEV;
3207 c_mode[0] = 'b';
3208 }
3209 else if ( S_ISFIFO(buf->st_mode) ) {
3210 (*type) = SH_FILE_FIFO;
3211 c_mode[0] = '|';
3212 }
3213 else if ( S_ISSOCK(buf->st_mode) ) {
3214 (*type) = SH_FILE_SOCKET;
3215 c_mode[0] = 's';
3216 }
3217 else if ( S_ISDOOR(buf->st_mode) ) {
3218 (*type) = SH_FILE_DOOR;
3219 c_mode[0] = 'D';
3220 }
3221 else if ( S_ISPORT(buf->st_mode) ) {
3222 (*type) = SH_FILE_PORT;
3223 c_mode[0] = 'P';
3224 }
3225 else {
3226 (*type) = SH_FILE_UNKNOWN;
3227 c_mode[0] = '?';
3228 }
3229
3230 SL_RETURN(0, _("sh_unix_getinfo_type"));
3231}
3232
3233int sh_unix_get_ftype(char * fullpath)
3234{
3235 char c_mode[CMODE_SIZE];
3236 struct stat buf;
3237 ShFileType type;
3238 int res;
3239
3240 SL_ENTER(_("sh_unix_get_ftype"));
3241
3242 res = retry_lstat(FIL__, __LINE__, fullpath, &buf);
3243
3244 if (res < 0)
3245 SL_RETURN(SH_FILE_UNKNOWN, _("sh_unix_getinfo_type"));
3246
3247 sh_unix_getinfo_type (&buf, &type, c_mode);
3248
3249 SL_RETURN(type, _("sh_unix_get_ftype"));
3250}
3251
3252
3253static
3254int sh_unix_getinfo_mode (struct stat *buf,
3255 unsigned int * mode,
3256 char * c_mode)
3257{
3258
3259 SL_ENTER(_("sh_unix_getinfo_mode"));
3260
3261 (*mode) = buf->st_mode;
3262
3263 /* make 'ls'-like string */
3264
3265 if ( (buf->st_mode & S_IRUSR) != 0 ) c_mode[1] = 'r';
3266 if ( (buf->st_mode & S_IWUSR) != 0 ) c_mode[2] = 'w';
3267 if ( (buf->st_mode & S_IXUSR) != 0 ) {
3268 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 's';
3269 else c_mode[3] = 'x';
3270 } else {
3271 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 'S';
3272 }
3273
3274 if ( (buf->st_mode & S_IRGRP) != 0 ) c_mode[4] = 'r';
3275 if ( (buf->st_mode & S_IWGRP) != 0 ) c_mode[5] = 'w';
3276 if ( (buf->st_mode & S_IXGRP) != 0 ) {
3277 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 's';
3278 else c_mode[6] = 'x';
3279 } else {
3280 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 'S';
3281 }
3282
3283 if ( (buf->st_mode & S_IROTH) != 0 ) c_mode[7] = 'r';
3284 if ( (buf->st_mode & S_IWOTH) != 0 ) c_mode[8] = 'w';
3285#ifdef S_ISVTX /* not POSIX */
3286 if ( (buf->st_mode & S_IXOTH) != 0 ) {
3287 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 't';
3288 else c_mode[9] = 'x';
3289 } else {
3290 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 'T';
3291 }
3292#else
3293 if ( (buf->st_mode & S_IXOTH) != 0 ) c_mode[9] = 'x';
3294#endif
3295
3296 SL_RETURN(0, _("sh_unix_getinfo_mode"));
3297}
3298
3299
3300long IO_Limit = 0;
3301
3302void sh_unix_io_pause ()
3303{
3304 long runtime;
3305 float someval;
3306 unsigned long sometime;
3307
3308 if (IO_Limit == 0)
3309 {
3310 return;
3311 }
3312 else
3313 {
3314 runtime = (long) (time(NULL) - sh.statistics.time_start);
3315
3316 if (runtime > 0 && (long)(sh.statistics.bytes_hashed/runtime) > IO_Limit)
3317 {
3318 someval = sh.statistics.bytes_hashed - (IO_Limit * runtime);
3319 someval /= (float) IO_Limit;
3320 if (someval < 1.0)
3321 {
3322 someval *= 1000; /* milliseconds in a second */
3323 sometime = (unsigned long) someval;
3324 retry_msleep(0, sometime);
3325 }
3326 else
3327 {
3328 sometime = (unsigned long) someval;
3329 retry_msleep (sometime, 0);
3330 }
3331 }
3332 }
3333 return;
3334}
3335
3336int sh_unix_set_io_limit (const char * c)
3337{
3338 long val;
3339
3340 SL_ENTER(_("sh_unix_set_io_limit"));
3341
3342 val = strtol (c, (char **)NULL, 10);
3343 if (val < 0)
3344 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
3345 _("set I/O limit"), c);
3346
3347 val = (val < 0 ? 0 : val);
3348
3349 IO_Limit = val * 1024;
3350 SL_RETURN( 0, _("sh_unix_set_io_limit"));
3351}
3352
3353/* obtain file info
3354 */
3355extern int flag_err_debug;
3356
3357#include "sh_ignore.h"
3358
3359int sh_unix_checksum_size (char * filename, struct stat * fbuf,
3360 char * fileHash, int alert_timeout, SL_TICKET fd)
3361{
3362 file_type * tmpFile;
3363 int status;
3364
3365 SL_ENTER(_("sh_unix_checksum_size"));
3366
3367 tmpFile = SH_ALLOC(sizeof(file_type));
3368 tmpFile->link_path = NULL;
3369
3370 if (sh.flag.checkSum != SH_CHECK_INIT)
3371 {
3372 /* lookup file in database */
3373 status = sh_hash_get_it (filename, tmpFile, NULL);
3374 if (status != 0) {
3375 goto out;
3376 }
3377 }
3378 else
3379 {
3380 tmpFile->size = fbuf->st_size;
3381 }
3382
3383 /* if last < current get checksum */
3384 if (tmpFile->size < fbuf->st_size)
3385 {
3386 char hashbuf[KEYBUF_SIZE];
3387 UINT64 local_length = (UINT64) (tmpFile->size < 0 ? 0 : tmpFile->size);
3388 sl_strlcpy(fileHash,
3389 sh_tiger_generic_hash (filename, fd, &(local_length),
3390 alert_timeout, hashbuf, sizeof(hashbuf)),
3391 KEY_LEN+1);
3392
3393 /* return */
3394 if (tmpFile->link_path) SH_FREE(tmpFile->link_path);
3395 SH_FREE(tmpFile);
3396 SL_RETURN( 0, _("sh_unix_checksum_size"));
3397 }
3398
3399 out:
3400 if (tmpFile->link_path) SH_FREE(tmpFile->link_path);
3401 SH_FREE(tmpFile);
3402 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3403 SL_RETURN( -1, _("sh_unix_checksum_size"));
3404}
3405
3406int sh_unix_check_selinux = S_FALSE;
3407int sh_unix_check_acl = S_FALSE;
3408
3409#ifdef USE_ACL
3410
3411#include <sys/acl.h>
3412static char * sh_unix_getinfo_acl (char * path, int fd, struct stat * buf)
3413{
3414 /* system.posix_acl_access, system.posix_acl_default
3415 */
3416 char * out = NULL;
3417 char * collect = NULL;
3418 char * tmp;
3419 char * out_compact;
3420 ssize_t len;
3421 acl_t result;
3422
3423 SL_ENTER(_("sh_unix_getinfo_acl"));
3424
3425 result = (fd == -1) ?
3426 acl_get_file (path, ACL_TYPE_ACCESS) :
3427 acl_get_fd (fd);
3428
3429 if (result)
3430 {
3431 out = acl_to_text (result, &len);
3432 if (out && (len > 0)) {
3433 out_compact = sh_util_acl_compact (out, len);
3434 acl_free(out);
3435 if (out_compact)
3436 {
3437 collect = sh_util_strconcat (_("acl_access:"), out_compact, NULL);
3438 SH_FREE(out_compact);
3439 }
3440 }
3441 acl_free(result);
3442 }
3443
3444
3445 if ( S_ISDIR(buf->st_mode) )
3446 {
3447 result = acl_get_file (path, ACL_TYPE_DEFAULT);
3448
3449 if (result)
3450 {
3451 out = acl_to_text (result, &len);
3452 if (out && (len > 0)) {
3453 out_compact = sh_util_acl_compact (out, len);
3454 acl_free(out);
3455 if (out_compact) {
3456 if (collect) {
3457 tmp = sh_util_strconcat (_("acl_default:"),
3458 out_compact, ":", collect, NULL);
3459 SH_FREE(collect);
3460 }
3461 else {
3462 tmp = sh_util_strconcat (_("acl_default:"), out_compact, NULL);
3463 }
3464 SH_FREE(out_compact);
3465 collect = tmp;
3466 }
3467 }
3468 acl_free(result);
3469 }
3470 }
3471
3472 SL_RETURN((collect),_("sh_unix_getinfo_acl"));
3473}
3474#endif
3475
3476#ifdef USE_XATTR
3477
3478#include <attr/xattr.h>
3479static char * sh_unix_getinfo_xattr_int (char * path, int fd, char * name)
3480{
3481 char * out = NULL;
3482 char * tmp = NULL;
3483 size_t size = 256;
3484 ssize_t result;
3485
3486 SL_ENTER(_("sh_unix_getinfo_xattr_int"));
3487
3488 out = SH_ALLOC(size);
3489
3490 result = (fd == -1) ?
3491 lgetxattr (path, name, out, size-1) :
3492 fgetxattr (fd, name, out, size-1);
3493
3494 if (result == -1 && errno == ERANGE)
3495 {
3496 SH_FREE(out);
3497 result = (fd == -1) ?
3498 lgetxattr (path, name, NULL, 0) :
3499 fgetxattr (fd, name, NULL, 0);
3500 size = result + 1;
3501 out = SH_ALLOC(size);
3502 result = (fd == -1) ?
3503 lgetxattr (path, name, out, size-1) :
3504 fgetxattr (fd, name, out, size-1);
3505 }
3506
3507 if ((result > 0) && ((size_t)result < size))
3508 {
3509 out[size-1] = '\0';
3510 tmp = out;
3511 }
3512 else
3513 {
3514 SH_FREE(out);
3515 }
3516
3517 SL_RETURN((tmp),_("sh_unix_getinfo_xattr_int"));
3518}
3519
3520
3521static char * sh_unix_getinfo_xattr (char * path, int fd, struct stat * buf)
3522{
3523 /* system.posix_acl_access, system.posix_acl_default, security.selinux
3524 */
3525 char * tmp;
3526 char * out = NULL;
3527 char * collect = NULL;
3528
3529 SL_ENTER(_("sh_unix_getinfo_xattr"));
3530
3531#ifdef USE_ACL
3532 /*
3533 * we need the acl_get_fd/acl_get_file functions, getxattr will only
3534 * yield the raw bytes
3535 */
3536 if (sh_unix_check_acl == S_TRUE)
3537 {
3538 out = sh_unix_getinfo_acl(path, fd, buf);
3539
3540 if (out)
3541 {
3542 collect = out;
3543 }
3544 }
3545#else
3546 (void) buf;
3547#endif
3548
3549 if (sh_unix_check_selinux == S_TRUE)
3550 {
3551 out = sh_unix_getinfo_xattr_int(path, fd, _("security.selinux"));
3552
3553 if (out)
3554 {
3555 if (collect) {
3556 tmp = sh_util_strconcat(_("selinux:"), out, ":", collect, NULL);
3557 SH_FREE(collect);
3558 }
3559 else {
3560 tmp = sh_util_strconcat(_("selinux:"), out, NULL);
3561 }
3562 SH_FREE(out);
3563 collect = tmp;
3564 }
3565 }
3566
3567 SL_RETURN((collect),_("sh_unix_getinfo_xattr"));
3568}
3569#endif
3570
3571#ifdef USE_XATTR
3572int sh_unix_setcheckselinux (const char * c)
3573{
3574 int i;
3575 SL_ENTER(_("sh_unix_setcheckselinux"));
3576 i = sh_util_flagval(c, &(sh_unix_check_selinux));
3577
3578 SL_RETURN(i, _("sh_unix_setcheckselinux"));
3579}
3580#endif
3581
3582#ifdef USE_ACL
3583int sh_unix_setcheckacl (const char * c)
3584{
3585 int i;
3586 SL_ENTER(_("sh_unix_setcheckacl"));
3587 i = sh_util_flagval(c, &(sh_unix_check_acl));
3588
3589 SL_RETURN(i, _("sh_unix_setcheckacl"));
3590}
3591#endif
3592
3593#ifdef HAVE_LIBZ
3594#include <zlib.h>
3595#endif
3596
3597
3598static void * sh_dummy_filename;
3599static void * sh_dummy_tmp;
3600static void * sh_dummy_tmp2;
3601
3602int sh_unix_getinfo (int level, const char * filename, file_type * theFile,
3603 char * fileHash, int policy)
3604{
3605 char timestr[81];
3606 long runtim;
3607 struct stat buf;
3608 struct stat lbuf;
3609 struct stat fbuf;
3610 volatile int stat_return;
3611 volatile int stat_errno = 0;
3612
3613 ShFileType type;
3614 unsigned int mode;
3615 char * tmp;
3616 char * tmp2;
3617
3618 char * linknamebuf;
3619 volatile int linksize;
3620
3621 extern int get_the_fd (SL_TICKET ticket);
3622
3623 volatile SL_TICKET rval_open;
3624 volatile int err_open = 0;
3625
3626 volatile int fd;
3627 volatile int fstat_return;
3628 volatile int fstat_errno = 0;
3629 volatile int try = 0;
3630
3631 sh_string * content = NULL;
3632
3633 time_t tend;
3634 time_t tstart;
3635
3636
3637 char * path = NULL;
3638
3639 volatile int alert_timeout = 120;
3640
3641 path = theFile->fullpath;
3642
3643 SL_ENTER(_("sh_unix_getinfo"));
3644
3645 if (!MODI_INITIALIZED(theFile->check_mask))
3646 {
3647 tmp2 = sh_util_safe_name (theFile->fullpath);
3648 SH_MUTEX_LOCK(mutex_thread_nolog);
3649 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_E_SUBGPATH,
3650 _("Uninitialized check mask"), _("sh_unix_getinfo"),
3651 tmp2);
3652 SH_MUTEX_UNLOCK(mutex_thread_nolog);
3653 SH_FREE(tmp2);
3654 }
3655
3656 /* Take the address to keep gcc from putting it into a register.
3657 * Avoids the 'clobbered by longjmp' warning.
3658 */
3659 sh_dummy_filename = (void *) &filename;
3660 sh_dummy_tmp = (void *) &tmp;
3661 sh_dummy_tmp2 = (void *) &tmp2;
3662
3663 /* --- Stat the file, and get checksum. ---
3664 */
3665 tstart = time(NULL);
3666
3667 stat_return = retry_lstat (FIL__, __LINE__,
3668 path /* theFile->fullpath */, &buf);
3669
3670 if (stat_return)
3671 stat_errno = errno;
3672
3673 theFile->link_path = NULL;
3674
3675 try_again:
3676
3677 fd = -1;
3678 fstat_return = -1;
3679 rval_open = -1;
3680
3681 if (stat_return == 0 && S_ISREG(buf.st_mode))
3682 {
3683 rval_open = sl_open_fastread (FIL__, __LINE__,
3684 path /* theFile->fullpath */, SL_YESPRIV);
3685 if (SL_ISERROR(rval_open))
3686 {
3687 char * stale = sl_check_stale();
3688
3689 if (stale)
3690 {
3691 SH_MUTEX_LOCK(mutex_thread_nolog);
3692 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, err_open, MSG_E_SUBGEN,
3693 stale, _("sh_unix_getinfo_open"));
3694 SH_MUTEX_UNLOCK(mutex_thread_nolog);
3695 }
3696
3697 if (errno == EBADF && try == 0) /* obsolete, but we keep this, just in case */
3698 {
3699 ++try;
3700 goto try_again;
3701 }
3702 err_open = errno;
3703 }
3704
3705 alert_timeout = 120; /* this is per 8K block now ! */
3706
3707 if (path[1] == 'p' && path[5] == '/' && path[2] == 'r' &&
3708 path[3] == 'o' && path[4] == 'c' && path[0] == '/')
3709 {
3710 /* seven is magic */
3711 alert_timeout = 7;
3712 }
3713
3714 fd = get_the_fd(rval_open);
3715 }
3716
3717 tend = time(NULL);
3718
3719 /* An unprivileged user may slow lstat/open to a crawl
3720 * with clever path/symlink setup
3721 */
3722 if ((tend - tstart) > (time_t) /* 60 */ 6)
3723 {
3724 tmp2 = sh_util_safe_name (theFile->fullpath);
3725 SH_MUTEX_LOCK(mutex_thread_nolog);
3726 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_TOOLATE,
3727 (long)(tend - tstart), tmp2);
3728 SH_MUTEX_UNLOCK(mutex_thread_nolog);
3729 SH_FREE(tmp2);
3730 }
3731
3732 if (fd >= 0)
3733 {
3734 fstat_return = retry_fstat (FIL__, __LINE__, fd, &fbuf);
3735
3736 if (fstat_return)
3737 {
3738 char * stale;
3739
3740 fstat_errno = errno;
3741
3742 stale = sl_check_stale();
3743
3744 if (stale)
3745 {
3746 SH_MUTEX_LOCK(mutex_thread_nolog);
3747 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, fstat_errno,
3748 MSG_E_SUBGEN,
3749 stale, _("sh_unix_getinfo_fstat"));
3750 SH_MUTEX_UNLOCK(mutex_thread_nolog);
3751 }
3752
3753 if (try == 0) /* obsolete, but we keep this, just in case */
3754 {
3755 ++try;
3756 sl_close(rval_open);
3757 goto try_again;
3758 }
3759 }
3760 }
3761 else
3762 {
3763 fd = -1;
3764 }
3765
3766
3767 /* --- case 1: lstat failed ---
3768 */
3769 if (stat_return != 0)
3770 {
3771 stat_return = errno;
3772 if (!SL_ISERROR(rval_open))
3773 sl_close(rval_open);
3774 if (sh.flag.checkSum == SH_CHECK_INIT ||
3775 (sh_hash_have_it (theFile->fullpath) >= 0 &&
3776 (!SH_FFLAG_REPORTED_SET(theFile->file_reported))))
3777 {
3778 if (S_FALSE == sh_ignore_chk_del(theFile->fullpath)) {
3779 char errbuf[SH_ERRBUF_SIZE];
3780 uid_t euid;
3781 (void) sl_get_euid(&euid);
3782 tmp2 = sh_util_safe_name (theFile->fullpath);
3783 SH_MUTEX_LOCK(mutex_thread_nolog);
3784 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_STAT,
3785 _("lstat"),
3786 sh_error_message (stat_errno, errbuf, sizeof(errbuf)),
3787 (long) euid,
3788 tmp2);
3789 SH_MUTEX_UNLOCK(mutex_thread_nolog);
3790 SH_FREE(tmp2);
3791 }
3792 }
3793 SL_RETURN((-1),_("sh_unix_getinfo"));
3794 }
3795
3796 /* --- case 2: not a regular file ---
3797 */
3798 else if (! S_ISREG(buf.st_mode))
3799 {
3800 if (fileHash != NULL)
3801 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3802 }
3803
3804 /* --- case 3a: a regular file, fstat ok ---
3805 */
3806 else if (fstat_return == 0 &&
3807 buf.st_mode == fbuf.st_mode &&
3808 buf.st_ino == fbuf.st_ino &&
3809 buf.st_uid == fbuf.st_uid &&
3810 buf.st_gid == fbuf.st_gid &&
3811 buf.st_dev == fbuf.st_dev )
3812 {
3813 if (fileHash != NULL)
3814 {
3815 if ((theFile->check_mask & MODI_CHK) == 0 ||
3816 sh_restrict_this(theFile->fullpath, (UINT64) fbuf.st_size,
3817 (UINT64) fbuf.st_mode, rval_open))
3818 {
3819 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3820 }
3821 else if ((theFile->check_mask & MODI_PREL) != 0 &&
3822 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
3823 alert_timeout, theFile->fullpath))
3824 {
3825 if (0 != sh_prelink_run (theFile->fullpath,
3826 fileHash, alert_timeout))
3827 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3828 }
3829 else
3830 {
3831 char hashbuf[KEYBUF_SIZE];
3832 UINT64 length_nolim = TIGER_NOLIM;
3833
3834 if (MODI_TXT_ENABLED(theFile->check_mask) && fbuf.st_size < (10 * SH_TXT_MAX))
3835 {
3836 sl_init_content (rval_open, fbuf.st_size);
3837 }
3838
3839 sl_strlcpy(fileHash,
3840 sh_tiger_generic_hash (theFile->fullpath,
3841 rval_open, &length_nolim,
3842 alert_timeout,
3843 hashbuf, sizeof(hashbuf)),
3844 KEY_LEN+1);
3845
3846 content = sl_get_content(rval_open);
3847 content = sh_string_copy(content);
3848
3849 if ((theFile->check_mask & MODI_SGROW) != 0)
3850 {
3851 fbuf.st_size = (off_t) length_nolim;
3852 buf.st_size = fbuf.st_size;
3853 sl_rewind(rval_open);
3854 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3855 &fileHash[KEY_LEN + 1],
3856 alert_timeout, rval_open);
3857 }
3858 }
3859 }
3860 }
3861
3862 /* --- case 3b: a regular file, fstat ok, but different ---
3863 */
3864 else if (fstat_return == 0 && S_ISREG(fbuf.st_mode))
3865 {
3866 memcpy (&buf, &fbuf, sizeof( struct stat ));
3867
3868 if (fileHash != NULL)
3869 {
3870 if ((theFile->check_mask & MODI_CHK) == 0 ||
3871 sh_restrict_this(theFile->fullpath, (UINT64) fbuf.st_size,
3872 (UINT64) fbuf.st_mode, rval_open))
3873 {
3874 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3875 }
3876 else if (policy == SH_LEVEL_PRELINK &&
3877 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
3878 alert_timeout, theFile->fullpath))
3879 {
3880 if (0 != sh_prelink_run (theFile->fullpath,
3881 fileHash, alert_timeout))
3882 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3883 }
3884 else
3885 {
3886 char hashbuf[KEYBUF_SIZE];
3887 UINT64 length_nolim = TIGER_NOLIM;
3888
3889 if (MODI_TXT_ENABLED(theFile->check_mask) && fbuf.st_size < (10 * SH_TXT_MAX))
3890 {
3891 sl_init_content (rval_open, fbuf.st_size);
3892 }
3893
3894 sl_strlcpy(fileHash,
3895 sh_tiger_generic_hash (theFile->fullpath, rval_open,
3896 &length_nolim,
3897 alert_timeout,
3898 hashbuf, sizeof(hashbuf)),
3899 KEY_LEN + 1);
3900
3901 content = sl_get_content(rval_open);
3902 content = sh_string_copy(content);
3903
3904 if ((theFile->check_mask & MODI_SGROW) != 0)
3905 {
3906 fbuf.st_size = (off_t) length_nolim;
3907 buf.st_size = fbuf.st_size;
3908 sl_rewind(rval_open);
3909 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3910 &fileHash[KEY_LEN + 1],
3911 alert_timeout, rval_open);
3912 }
3913 }
3914 }
3915 }
3916
3917 /* --- case 4: a regular file, fstat failed ---
3918 */
3919
3920 else /* fstat_return != 0 or !S_ISREG(fbuf.st_mode) or open() failed */
3921 {
3922 uid_t euid;
3923
3924 if (fileHash != NULL)
3925 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3926
3927 if ((theFile->check_mask & MODI_CHK) != 0)
3928 {
3929 tmp2 = sh_util_safe_name (theFile->fullpath);
3930
3931
3932 if (fd >= 0 && fstat_return != 0)
3933 {
3934 char errbuf[SH_ERRBUF_SIZE];
3935 (void) sl_get_euid(&euid);
3936
3937 SH_MUTEX_LOCK(mutex_thread_nolog);
3938 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_STAT,
3939 _("fstat"),
3940 sh_error_message (fstat_errno, errbuf, sizeof(errbuf)),
3941 (long) euid,
3942 tmp2);
3943 SH_MUTEX_UNLOCK(mutex_thread_nolog);
3944 }
3945 else if (fd >= 0 && !S_ISREG(fbuf.st_mode))
3946 {
3947 SH_MUTEX_LOCK(mutex_thread_nolog);
3948 sh_error_handle (level, FIL__, __LINE__, fstat_errno,
3949 MSG_E_NOTREG, tmp2);
3950 SH_MUTEX_UNLOCK(mutex_thread_nolog);
3951 }
3952 else
3953 {
3954 char errbuf[SH_ERRBUF_SIZE];
3955 char errbuf2[SH_ERRBUF_SIZE];
3956 sl_strlcpy(errbuf, sl_error_string(rval_open), sizeof(errbuf));
3957 sh_error_message(err_open, errbuf2, sizeof(errbuf2));
3958 SH_MUTEX_LOCK(mutex_thread_nolog);
3959 sh_error_handle (level, FIL__, __LINE__, err_open,
3960 MSG_E_READ, errbuf, errbuf2, tmp2);
3961 SH_MUTEX_UNLOCK(mutex_thread_nolog);
3962 }
3963 SH_FREE(tmp2);
3964 }
3965 }
3966
3967
3968 /* --- Determine file type. ---
3969 */
3970 memset (theFile->c_mode, '-', CMODE_SIZE-1);
3971 theFile->c_mode[CMODE_SIZE-1] = '\0';
3972
3973 memset (theFile->link_c_mode, '-', CMODE_SIZE-1);
3974 theFile->link_c_mode[CMODE_SIZE-1] = '\0';
3975
3976 sh_unix_getinfo_type (&buf, &type, theFile->c_mode);
3977 theFile->type = type;
3978
3979#if defined(__linux__) || defined(HAVE_STAT_FLAGS)
3980
3981 /* --- Determine file attributes. ---
3982 */
3983 memset (theFile->c_attributes, '-', ATTRBUF_SIZE);
3984 theFile->c_attributes[ATTRBUF_USED] = '\0';
3985 theFile->attributes = 0;
3986
3987#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
3988 if (theFile->c_mode[0] != 'c' && theFile->c_mode[0] != 'b' &&
3989 theFile->c_mode[0] != 'l' )
3990 sh_unix_getinfo_attr(theFile->fullpath,
3991 &theFile->attributes, theFile->c_attributes,
3992 fd, &buf);
3993#endif
3994#endif
3995
3996#if defined(USE_XATTR) && defined(USE_ACL)
3997 if (sh_unix_check_selinux == S_TRUE || sh_unix_check_acl == S_TRUE)
3998 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3999#elif defined(USE_XATTR)
4000 if (sh_unix_check_selinux == S_TRUE)
4001 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
4002#elif defined(USE_ACL)
4003 if (sh_unix_check_acl == S_TRUE)
4004 theFile->attr_string = sh_unix_getinfo_acl (theFile->fullpath, fd, &buf);
4005#else
4006 theFile->attr_string = NULL;
4007#endif
4008
4009 if (!SL_ISERROR(rval_open))
4010 sl_close(rval_open);
4011
4012
4013 /* --- I/O limit. ---
4014 */
4015 if (IO_Limit > 0)
4016 {
4017 runtim = (long) (time(NULL) - sh.statistics.time_start);
4018
4019 if (runtim > 0 && (long)(sh.statistics.bytes_hashed/runtim) > IO_Limit)
4020 retry_msleep(1, 0);
4021 }
4022
4023 /* --- Determine permissions. ---
4024 */
4025 sh_unix_getinfo_mode (&buf, &mode, theFile->c_mode);
4026
4027 /* --- Trivia. ---
4028 */
4029 theFile->dev = buf.st_dev;
4030 theFile->ino = buf.st_ino;
4031 theFile->mode = buf.st_mode;
4032 theFile->hardlinks = buf.st_nlink;
4033 theFile->owner = buf.st_uid;
4034 theFile->group = buf.st_gid;
4035 theFile->rdev = buf.st_rdev;
4036 theFile->size = buf.st_size;
4037 theFile->blksize = (unsigned long) buf.st_blksize;
4038 theFile->blocks = (unsigned long) buf.st_blocks;
4039 theFile->atime = buf.st_atime;
4040 theFile->mtime = buf.st_mtime;
4041 theFile->ctime = buf.st_ctime;
4042
4043
4044 /* --- Owner and group. ---
4045 */
4046
4047 if (NULL == sh_unix_getGIDname(SH_ERR_ALL, buf.st_gid, theFile->c_group, GROUP_MAX+1)) {
4048
4049 tmp2 = sh_util_safe_name (theFile->fullpath);
4050
4051 if (policy == SH_LEVEL_ALLIGNORE)
4052 {
4053 SH_MUTEX_LOCK(mutex_thread_nolog);
4054 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
4055 MSG_FI_NOGRP,
4056 (long) buf.st_gid, tmp2);
4057 SH_MUTEX_UNLOCK(mutex_thread_nolog);
4058 }
4059 else
4060 {
4061 SH_MUTEX_LOCK(mutex_thread_nolog);
4062 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
4063 MSG_FI_NOGRP,
4064 (long) buf.st_gid, tmp2);
4065 SH_MUTEX_UNLOCK(mutex_thread_nolog);
4066 }
4067 SH_FREE(tmp2);
4068 sl_snprintf(theFile->c_group, GROUP_MAX+1, "%d", (long) buf.st_gid);
4069 }
4070
4071
4072 if (NULL == sh_unix_getUIDname(SH_ERR_ALL, buf.st_uid, theFile->c_owner, USER_MAX+1)) {
4073
4074 tmp2 = sh_util_safe_name (theFile->fullpath);
4075
4076 if (policy == SH_LEVEL_ALLIGNORE)
4077 {
4078 SH_MUTEX_LOCK(mutex_thread_nolog);
4079 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
4080 MSG_FI_NOUSR,
4081 (long) buf.st_uid, tmp2);
4082 SH_MUTEX_UNLOCK(mutex_thread_nolog);
4083 }
4084 else
4085 {
4086 SH_MUTEX_LOCK(mutex_thread_nolog);
4087 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
4088 MSG_FI_NOUSR,
4089 (long) buf.st_uid, tmp2);
4090 SH_MUTEX_UNLOCK(mutex_thread_nolog);
4091 }
4092 SH_FREE(tmp2);
4093 sl_snprintf(theFile->c_owner, USER_MAX+1, "%d", (long) buf.st_uid);
4094 }
4095
4096 /* --- Output the file. ---
4097 */
4098 if (flag_err_debug == SL_TRUE)
4099 {
4100 tmp2 = sh_util_safe_name ((filename == NULL) ?
4101 theFile->fullpath : filename);
4102 (void) sh_unix_time(theFile->mtime, timestr, sizeof(timestr));
4103 SH_MUTEX_LOCK(mutex_thread_nolog);
4104 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LIST,
4105 theFile->c_mode,
4106 theFile->hardlinks,
4107 theFile->c_owner,
4108 theFile->c_group,
4109 (unsigned long) theFile->size,
4110 timestr,
4111 tmp2);
4112 SH_MUTEX_UNLOCK(mutex_thread_nolog);
4113 SH_FREE(tmp2);
4114 }
4115
4116 /* --- Check for links. ---
4117 */
4118 if (theFile->c_mode[0] == 'l')
4119 {
4120 linknamebuf = SH_ALLOC(PATH_MAX);
4121
4122 /* flawfinder: ignore */
4123 linksize = readlink (theFile->fullpath, linknamebuf, PATH_MAX-1);
4124
4125 if (linksize < (PATH_MAX-1) && linksize >= 0)
4126 linknamebuf[linksize] = '\0';
4127 else
4128 linknamebuf[PATH_MAX-1] = '\0';
4129
4130 if (linksize < 0)
4131 {
4132 char errbuf[SH_ERRBUF_SIZE];
4133 linksize = errno;
4134 tmp2 = sh_util_safe_name (theFile->fullpath);
4135 SH_MUTEX_LOCK(mutex_thread_nolog);
4136 sh_error_handle (level, FIL__, __LINE__, linksize, MSG_FI_RDLNK,
4137 sh_error_message (linksize, errbuf, sizeof(errbuf)), tmp2);
4138 SH_MUTEX_UNLOCK(mutex_thread_nolog);
4139 SH_FREE(tmp2);
4140 SH_FREE(linknamebuf);
4141 theFile->link_path = sh_util_strdup("-");
4142 SL_RETURN((-1),_("sh_unix_getinfo"));
4143 }
4144
4145 if (linknamebuf[0] == '/')
4146 {
4147 theFile->link_path = sh_util_strdup (linknamebuf);
4148 }
4149 else
4150 {
4151 tmp = sh_util_dirname(theFile->fullpath);
4152 if (tmp) {
4153 theFile->link_path = SH_ALLOC(PATH_MAX);
4154 sl_strlcpy (theFile->link_path, tmp, PATH_MAX);
4155 SH_FREE(tmp);
4156 } else {
4157 theFile->link_path = SH_ALLOC(PATH_MAX);
4158 theFile->link_path[0] = '\0';
4159 }
4160 /*
4161 * Only attach '/' if not root directory. Handle "//", which
4162 * according to POSIX is implementation-defined, and may be
4163 * different from "/" (however, three or more '/' will collapse
4164 * to one).
4165 */
4166 tmp = theFile->link_path; while (*tmp == '/') ++tmp;
4167 if (*tmp != '\0')
4168 {
4169 sl_strlcat (theFile->link_path, "/", PATH_MAX);
4170 }
4171 sl_strlcat (theFile->link_path, linknamebuf, PATH_MAX);
4172 }
4173
4174 /* stat the link
4175 */
4176 stat_return = retry_lstat (FIL__, __LINE__, theFile->link_path, &lbuf);
4177
4178 /* check for error
4179 */
4180 if (stat_return != 0)
4181 {
4182 stat_return = errno;
4183 tmp = sh_util_safe_name (theFile->fullpath);
4184 tmp2 = sh_util_safe_name (theFile->link_path);
4185 if (stat_return != ENOENT)
4186 {
4187 uid_t euid;
4188 char errbuf[SH_ERRBUF_SIZE];
4189
4190 (void) sl_get_euid(&euid);
4191 SH_MUTEX_LOCK(mutex_thread_nolog);
4192 sh_error_handle (level, FIL__, __LINE__, stat_return,
4193 MSG_FI_STAT,
4194 _("lstat"),
4195 sh_error_message (stat_return,errbuf, sizeof(errbuf)),
4196 (long) euid,
4197 tmp2);
4198 SH_MUTEX_UNLOCK(mutex_thread_nolog);
4199 }
4200 else
4201 {
4202 /* a dangling link -- everybody seems to have plenty of them
4203 */
4204 SH_MUTEX_LOCK(mutex_thread_nolog);
4205 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_DLNK,
4206 tmp, tmp2);
4207 SH_MUTEX_UNLOCK(mutex_thread_nolog);
4208 }
4209 theFile->linkisok = BAD;
4210 SH_FREE(tmp);
4211 SH_FREE(tmp2);
4212 SH_FREE(linknamebuf);
4213 /*
4214 * changed Tue Feb 10 16:16:13 CET 2004:
4215 * add dangling symlinks into database
4216 * SL_RETURN((-1),_("sh_unix_getinfo"));
4217 */
4218 theFile->linkmode = 0;
4219 SL_RETURN((0),_("sh_unix_getinfo"));
4220 }
4221
4222 theFile->linkisok = GOOD;
4223
4224
4225 /* --- Determine file type. ---
4226 */
4227 sh_unix_getinfo_type (&lbuf, &type, theFile->link_c_mode);
4228 theFile->type = type;
4229
4230 /* --- Determine permissions. ---
4231 */
4232 sh_unix_getinfo_mode (&lbuf, &mode, theFile->link_c_mode);
4233 theFile->linkmode = lbuf.st_mode;
4234
4235 /* --- Output the link. ---
4236 */
4237 if (theFile->linkisok == GOOD)
4238 {
4239 tmp2 = sh_util_safe_name (linknamebuf);
4240 SH_MUTEX_LOCK(mutex_thread_nolog);
4241 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LLNK,
4242 theFile->link_c_mode, tmp2);
4243 SH_MUTEX_UNLOCK(mutex_thread_nolog);
4244 SH_FREE(tmp2);
4245 }
4246 SH_FREE(linknamebuf);
4247 }
4248 else /* not a link */
4249 {
4250 if (content)
4251 {
4252#ifdef HAVE_LIBZ
4253 unsigned long clen;
4254 unsigned char * compressed;
4255#ifdef HAVE_COMPRESSBOUND
4256 clen = compressBound(sh_string_len(content));
4257#else
4258 if (sh_string_len(content) > 10*SH_TXT_MAX)
4259 clen = SH_TXT_MAX;
4260 else
4261 clen = 13 + (int)(1.0001*sh_string_len(content));
4262#endif
4263 compressed = SH_ALLOC(clen);
4264 if (Z_OK == compress(compressed, &clen,
4265 (unsigned char *) sh_string_str(content),
4266 sh_string_len(content)))
4267 {
4268 if (clen < SH_TXT_MAX)
4269 {
4270 sh_util_base64_enc_alloc (&(theFile->link_path),
4271 (char *) compressed, clen);
4272 }
4273 else
4274 {
4275 char tmsg[128];
4276 char * tpath = sh_util_safe_name (theFile->fullpath);
4277 sl_snprintf(tmsg, sizeof(tmsg),
4278 _("compressed file too large (%lu bytes)"),
4279 clen);
4280 SH_MUTEX_LOCK(mutex_thread_nolog);
4281 sh_error_handle (SH_ERR_WARN, FIL__, __LINE__, -1,
4282 MSG_E_SUBGPATH, tmsg,
4283 _("sh_unix_getinfo"), tpath);
4284 SH_MUTEX_UNLOCK(mutex_thread_nolog);
4285 SH_FREE(tpath);
4286 }
4287 }
4288 SH_FREE(compressed);
4289#endif
4290 sh_string_destroy(&content);
4291 }
4292 }
4293 SL_RETURN((0),_("sh_unix_getinfo"));
4294}
4295
4296/* #if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE) */
4297#endif
4298
4299int sh_unix_unlock(char * lockfile, char * flag)
4300{
4301 int error = 0;
4302
4303 SL_ENTER(_("sh_unix_unlock"));
4304
4305 if (sh.flag.isdaemon == S_FALSE && flag == NULL)
4306 SL_RETURN((0),_("sh_unix_unlock"));
4307
4308 /* --- Logfile is not locked to us. ---
4309 */
4310 if (sh.flag.islocked == BAD && flag != NULL)
4311 SL_RETURN((-1),_("sh_unix_unlock"));
4312
4313 /* --- Check whether the directory is secure. ---
4314 */
4315 if (0 != tf_trust_check (lockfile, SL_YESPRIV))
4316 SL_RETURN((-1),_("sh_unix_unlock"));
4317
4318 /* --- Delete the lock file. ---
4319 */
4320 error = retry_aud_unlink (FIL__, __LINE__, lockfile);
4321
4322 if (error == 0)
4323 {
4324 if (flag != NULL)
4325 sh.flag.islocked = BAD; /* not locked anymore */
4326 }
4327 else if (flag != NULL)
4328 {
4329 char errbuf[SH_ERRBUF_SIZE];
4330 error = errno;
4331 sh_error_handle ((-1), FIL__, __LINE__, error, MSG_E_UNLNK,
4332 sh_error_message(error, errbuf, sizeof(errbuf)),
4333 lockfile);
4334 SL_RETURN((-1),_("sh_unix_unlock"));
4335 }
4336 SL_RETURN((0),_("sh_unix_unlock"));
4337}
4338
4339int sh_unix_check_piddir (char * pidpath)
4340{
4341 static struct stat buf;
4342 int status = 0;
4343 char * pid_dir;
4344
4345 SL_ENTER(_("sh_unix_check_piddir"));
4346
4347 pid_dir = sh_util_dirname (pidpath);
4348
4349 status = retry_lstat (FIL__, __LINE__, pid_dir, &buf);
4350
4351 if (status < 0 && errno == ENOENT)
4352 {
4353 status = mkdir (pid_dir, 0777);
4354 if (status < 0)
4355 {
4356 sh_error_handle ((-1), FIL__, __LINE__, status,
4357 MSG_E_SUBGEN,
4358 _("Cannot create PID directory"),
4359 _("sh_unix_check_piddir"));
4360 SH_FREE(pid_dir);
4361 SL_RETURN((-1),_("sh_unix_check_piddir"));
4362 }
4363 }
4364 else if (!S_ISDIR(buf.st_mode))
4365 {
4366 sh_error_handle ((-1), FIL__, __LINE__, status,
4367 MSG_E_SUBGEN,
4368 _("Path of PID directory refers to a non-directory object"),
4369 _("sh_unix_check_piddir"));
4370 SH_FREE(pid_dir);
4371 SL_RETURN((-1),_("sh_unix_check_piddir"));
4372 }
4373 SH_FREE(pid_dir);
4374 SL_RETURN((0),_("sh_unix_check_piddir"));
4375}
4376
4377int sh_unix_lock (char * lockfile, char * flag)
4378{
4379 int filed;
4380 int errnum;
4381 char myPid[64];
4382 SL_TICKET fd;
4383 extern int get_the_fd (SL_TICKET ticket);
4384
4385 SL_ENTER(_("sh_unix_lock"));
4386
4387 sprintf (myPid, "%ld\n", (long) sh.pid); /* known to fit */
4388
4389 if (flag == NULL) /* PID file, check for directory */
4390 {
4391 if (0 != sh_unix_check_piddir (lockfile))
4392 {
4393 SL_RETURN((-1),_("sh_unix_lock"));
4394 }
4395 }
4396
4397 fd = sl_open_safe_rdwr (FIL__, __LINE__,
4398 lockfile, SL_YESPRIV); /* fails if file exists */
4399
4400 if (!SL_ISERROR(fd))
4401 {
4402 errnum = sl_write (fd, myPid, sl_strlen(myPid));
4403 filed = get_the_fd(fd);
4404 fchmod (filed, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
4405 sl_close (fd);
4406
4407 if (!SL_ISERROR(errnum))
4408 {
4409 if (flag != NULL)
4410 sh.flag.islocked = GOOD;
4411 SL_RETURN((0),_("sh_unix_lock"));
4412 }
4413 }
4414
4415 TPT((0, FIL__, __LINE__, _("msg=<open pid file failed>\n")));
4416 if (flag != NULL)
4417 sh.flag.islocked = BAD;
4418 SL_RETURN((-1),_("sh_unix_lock"));
4419
4420 /* notreached */
4421}
4422
4423
4424/* check whether file is locked
4425 */
4426int sh_unix_test_and_lock (char * filename, char * lockfile)
4427{
4428 static struct stat buf;
4429 int status = 0;
4430
4431
4432 SL_TICKET fd;
4433 char line_in[128];
4434
4435 SL_ENTER(_("sh_unix_test_and_lock"));
4436
4437 status = retry_lstat (FIL__, __LINE__, lockfile, &buf);
4438
4439 /* --- No lock file found, try to lock. ---
4440 */
4441
4442 if (status < 0 && errno == ENOENT)
4443 {
4444 if (0 == sh_unix_lock (lockfile, filename))
4445 {
4446 if (filename != NULL)
4447 sh.flag.islocked = GOOD;
4448 SL_RETURN((0),_("sh_unix_test_and_lock"));
4449 }
4450 else
4451 {
4452 sh_error_handle ((-1), FIL__, __LINE__, status,
4453 MSG_E_SUBGEN,
4454 (filename == NULL) ? _("Cannot create PID file (1)") : _("Cannot create lock file (1)"),
4455 _("sh_unix_test_and_lock"));
4456 SL_RETURN((-1),_("sh_unix_test_and_lock"));
4457 }
4458 }
4459 else if (status == 0 && buf.st_size == 0)
4460 {
4461 if (filename != NULL)
4462 sh.flag.islocked = GOOD;
4463 sh_unix_unlock (lockfile, filename);
4464 if (filename != NULL)
4465 sh.flag.islocked = BAD;
4466 if (0 == sh_unix_lock (lockfile, filename))
4467 {
4468 if (filename != NULL)
4469 sh.flag.islocked = GOOD;
4470 SL_RETURN((0),_("sh_unix_test_and_lock"));
4471 }
4472 else
4473 {
4474 sh_error_handle ((-1), FIL__, __LINE__, status,
4475 MSG_E_SUBGEN,
4476 (filename == NULL) ? _("Cannot create PID file (2)") : _("Cannot create lock file (2)"),
4477 _("sh_unix_test_and_lock"));
4478 SL_RETURN((-1),_("sh_unix_test_and_lock"));
4479 }
4480 }
4481
4482 /* --- Check on lock. ---
4483 */
4484
4485 if (status >= 0)
4486 {
4487 fd = sl_open_read (FIL__, __LINE__, lockfile, SL_YESPRIV);
4488 if (SL_ISERROR(fd))
4489 sh_error_handle ((-1), FIL__, __LINE__, fd,
4490 MSG_E_SUBGEN,
4491 (filename == NULL) ? _("Cannot open PID file for read") : _("Cannot open lock file for read"),
4492 _("sh_unix_test_and_lock"));
4493 }
4494 else
4495 fd = -1;
4496
4497 if (!SL_ISERROR(fd))
4498 {
4499 /* read the PID in the lock file
4500 */
4501 status = sl_read (fd, line_in, sizeof(line_in));
4502 line_in[sizeof(line_in)-1] = '\0';
4503
4504 /* convert to numeric
4505 */
4506 if (status > 0)
4507 {
4508 errno = 0;
4509 status = strtol(line_in, (char **)NULL, 10);
4510 if (errno == ERANGE || status <= 0)
4511 {
4512 sh_error_handle ((-1), FIL__, __LINE__, status,
4513 MSG_E_SUBGEN,
4514 (filename == NULL) ? _("Bad PID in PID file") : _("Bad PID in lock file"),
4515 _("sh_unix_test_and_lock"));
4516
4517 status = -1;
4518 }
4519 }
4520 else
4521 {
4522 sh_error_handle ((-1), FIL__, __LINE__, status,
4523 MSG_E_SUBGEN,
4524 (filename == NULL) ? _("Cannot read PID file") : _("Cannot read lock file"),
4525 _("sh_unix_test_and_lock"));
4526 }
4527 sl_close(fd);
4528
4529 if (status > 0 && (unsigned int) status == sh.pid)
4530 {
4531 if (filename != NULL)
4532 sh.flag.islocked = GOOD;
4533 SL_RETURN((0),_("sh_unix_test_and_lock"));
4534 }
4535
4536
4537 /* --- Check whether the process exists. ---
4538 */
4539 if (status > 0)
4540 {
4541 errno = 0;
4542 status = aud_kill (FIL__, __LINE__, status, 0);
4543
4544 /* Does not exist, so remove the stale lock
4545 * and create a new one.
4546 */
4547 if (status < 0 && errno == ESRCH)
4548 {
4549 if (filename != NULL)
4550 sh.flag.islocked = GOOD;
4551 if (0 != sh_unix_unlock(lockfile, filename) && (filename !=NULL))
4552 sh.flag.islocked = BAD;
4553 else
4554 {
4555 if (0 == sh_unix_lock (lockfile, filename))
4556 {
4557 if (filename != NULL)
4558 sh.flag.islocked = GOOD;
4559 SL_RETURN((0),_("sh_unix_test_and_lock"));
4560 }
4561 else
4562 {
4563 sh_error_handle ((-1), FIL__, __LINE__, status,
4564 MSG_E_SUBGEN,
4565 (filename == NULL) ? _("Cannot create PID file (3)") : _("Cannot create lock file (3)"),
4566 _("sh_unix_test_and_lock"));
4567 }
4568 if (filename != NULL)
4569 sh.flag.islocked = BAD;
4570 }
4571 }
4572 else
4573 {
4574 sh_error_handle ((-1), FIL__, __LINE__, status,
4575 MSG_E_SUBGEN,
4576 (filename == NULL) ? _("Cannot remove stale PID file, PID may be a running process") : _("Cannot remove stale lock file, PID may be a running process"),
4577 _("sh_unix_test_and_lock"));
4578 if (filename != NULL)
4579 sh.flag.islocked = BAD;
4580 }
4581 }
4582 }
4583 SL_RETURN((-1),_("sh_unix_testlock"));
4584}
4585
4586/* write the PID file
4587 */
4588int sh_unix_write_pid_file()
4589{
4590 return sh_unix_test_and_lock(NULL, sh.srvlog.alt);
4591}
4592
4593/* write lock for filename
4594 */
4595int sh_unix_write_lock_file(char * filename)
4596{
4597 size_t len;
4598 int res;
4599 char * lockfile;
4600
4601 if (filename == NULL)
4602 return (-1);
4603
4604 len = sl_strlen(filename);
4605 if (sl_ok_adds(len, 6))
4606 len += 6;
4607 lockfile = SH_ALLOC(len);
4608 sl_strlcpy(lockfile, filename, len);
4609 sl_strlcat(lockfile, _(".lock"), len);
4610 res = sh_unix_test_and_lock(filename, lockfile);
4611 SH_FREE(lockfile);
4612 return res;
4613}
4614
4615/* rm lock for filename
4616 */
4617int sh_unix_rm_lock_file(char * filename)
4618{
4619 size_t len;
4620 int res;
4621 char * lockfile;
4622
4623 if (filename == NULL)
4624 return (-1);
4625
4626 len = sl_strlen(filename);
4627 if (sl_ok_adds(len, 6))
4628 len += 6;
4629 lockfile = SH_ALLOC(len);
4630 sl_strlcpy(lockfile, filename, len);
4631 sl_strlcat(lockfile, _(".lock"), len);
4632
4633 res = sh_unix_unlock(lockfile, filename);
4634 SH_FREE(lockfile);
4635 return res;
4636}
4637
4638/* rm lock for filename
4639 */
4640int sh_unix_rm_pid_file()
4641{
4642 return sh_unix_unlock(sh.srvlog.alt, NULL);
4643}
4644
4645/* Test whether file exists
4646 */
4647int sh_unix_file_exists(char * path)
4648{
4649 struct stat buf;
4650
4651 SL_ENTER(_("sh_unix_file_exists"));
4652
4653 if (0 == retry_lstat(FIL__, __LINE__, path, &buf))
4654 SL_RETURN( S_TRUE, _("sh_unix_file_exists"));
4655 else
4656 SL_RETURN( S_FALSE, _("sh_unix_file_exists"));
4657}
4658
4659
4660/* Test whether file exists, is a character device, and allows read
4661 * access.
4662 */
4663int sh_unix_device_readable(int fd)
4664{
4665 struct stat buf;
4666
4667 SL_ENTER(_("sh_unix_device_readable"));
4668
4669 if (retry_fstat(FIL__, __LINE__, fd, &buf) == -1)
4670 SL_RETURN( (-1), _("sh_unix_device_readable"));
4671 else if ( S_ISCHR(buf.st_mode) && 0 != (S_IROTH & buf.st_mode) )
4672 SL_RETURN( (0), _("sh_unix_device_readable"));
4673 else
4674 SL_RETURN( (-1), _("sh_unix_device_readable"));
4675}
4676
4677static char preq[16];
4678
4679/* return true if database is remote
4680 */
4681int file_is_remote ()
4682{
4683 static int init = 0;
4684 struct stat buf;
4685
4686 SL_ENTER(_("file_is_remote"));
4687
4688 if (init == 0)
4689 {
4690 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4691 ++init;
4692 }
4693 if (0 == sl_strncmp (sh.data.path, preq, 15))
4694 {
4695 if (sh.data.path[15] != '\0') /* should be start of path */
4696 {
4697 if (0 == stat(&(sh.data.path[15]), &buf))
4698 {
4699 SL_RETURN( S_FALSE, _("file_is_remote"));
4700 }
4701 }
4702 SL_RETURN( S_TRUE, _("file_is_remote"));
4703 }
4704 SL_RETURN( S_FALSE, _("file_is_remote"));
4705}
4706
4707/* Return the path to the configuration/database file.
4708 */
4709char * file_path(char what, char flag)
4710{
4711 static int init = 0;
4712
4713 SL_ENTER(_("file_path"));
4714
4715 if (init == 0)
4716 {
4717 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4718 ++init;
4719 }
4720
4721 switch (what)
4722 {
4723
4724 case 'C':
4725 if (0 == sl_strncmp (sh.conf.path, preq, 15))
4726 {
4727#if defined(SH_WITH_SERVER)
4728 if (sh.flag.isserver == S_TRUE && sl_strlen(sh.conf.path) == 15)
4729 SL_RETURN( NULL, _("file_path"));
4730 if (sh.flag.isserver == S_TRUE)
4731 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4732#endif
4733 if (flag == 'R')
4734 SL_RETURN( preq, _("file_path"));
4735 if (flag == 'I')
4736 {
4737 if (sl_strlen(sh.conf.path) == 15)
4738 SL_RETURN( NULL, _("file_path"));
4739 else
4740 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4741 }
4742 SL_RETURN ( preq, _("file_path"));
4743 }
4744 else
4745 SL_RETURN( sh.conf.path, _("file_path"));
4746 /* break; *//* unreachable */
4747
4748 case 'D':
4749 if (0 == sl_strncmp (sh.data.path, preq, 15))
4750 {
4751 if (flag == 'R')
4752 SL_RETURN( preq, _("file_path"));
4753 if (flag == 'W' && sl_strlen(sh.data.path) == 15)
4754 SL_RETURN (NULL, _("file_path"));
4755 if (flag == 'W')
4756 SL_RETURN( &(sh.data.path[15]), _("file_path"));
4757 }
4758 else
4759 SL_RETURN( sh.data.path, _("file_path"));
4760 break;
4761
4762 default:
4763 SL_RETURN( NULL, _("file_path"));
4764 }
4765
4766 return NULL; /* notreached */
4767}
4768/************************************************/
4769/**** Mlock Utilities ****/
4770/************************************************/
4771
4772#include <limits.h>
4773
4774int sh_unix_pagesize()
4775{
4776 int pagesize = 4096;
4777#if defined(_SC_PAGESIZE)
4778 pagesize = sysconf(_SC_PAGESIZE);
4779#elif defined(_SC_PAGE_SIZE)
4780 pagesize = sysconf(_SC_PAGE_SIZE);
4781#elif defined(HAVE_GETPAGESIZE)
4782 pagesize = getpagesize();
4783#elif defined(PAGESIZE)
4784 pagesize = PAGESIZE;
4785#endif
4786
4787 return ((pagesize > 0) ? pagesize : 4096);
4788}
4789
4790typedef struct sh_page_lt {
4791 unsigned long page_start;
4792 int page_refcount;
4793 char file[64];
4794 int line;
4795 struct sh_page_lt * next;
4796} sh_page_l;
4797
4798sh_page_l * sh_page_locked = NULL;
4799volatile int page_locking = 0;
4800
4801unsigned long sh_unix_lookup_page (void * in_addr, size_t len, int * num_pages)
4802{
4803 int pagesize = sh_unix_pagesize();
4804 unsigned long addr = (unsigned long) in_addr;
4805
4806 unsigned long pagebase;
4807 unsigned long pagediff;
4808 unsigned long pagenum = addr / pagesize;
4809
4810 SL_ENTER(_("sh_unix_lookup_page"));
4811#if 0
4812 fprintf(stderr, "mlock: --> base %ld, pagenum: %ld\n",
4813 addr, pagenum);
4814#endif
4815
4816 /* address of first page
4817 */
4818 pagebase = pagenum * pagesize;
4819
4820 /* number of pages
4821 */
4822 pagediff = (addr + len) - pagebase;
4823 pagenum = pagediff / pagesize;
4824 if (pagenum * pagesize < pagediff)
4825 ++pagenum;
4826
4827#if 0
4828 fprintf(stderr, "mlock: --> pagebase %ld, pagediff %ld, (addr + len) %ld\n",
4829 pagebase, pagediff, (addr + len));
4830#endif
4831
4832 *num_pages = pagenum;
4833 SL_RETURN((pagebase), _("sh_unix_lookup_page"));
4834}
4835
4836
4837#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4838
4839SH_MUTEX_STATIC(mutex_mlock,PTHREAD_MUTEX_INITIALIZER);
4840
4841int sh_unix_mlock (const char * file, int line, void * in_addr, size_t len)
4842{
4843 int num_pages;
4844 int status = 0;
4845 int pagesize;
4846 sh_page_l * page_list;
4847 unsigned long addr;
4848#ifdef TEST_MLOCK
4849 int i = 0;
4850#endif
4851
4852 SL_ENTER(_("sh_unix_mlock"));
4853
4854 /* There's no cancellation point here, except if tracing is on
4855 */
4856 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4857
4858 page_list = sh_page_locked;
4859
4860 if (0 != page_locking)
4861 {
4862 status = -1;
4863 goto exit_mlock;
4864 }
4865
4866 page_locking = 1;
4867
4868 pagesize = sh_unix_pagesize();
4869 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4870
4871#ifdef TEST_MLOCK
4872 fprintf(stderr, "mlock: addr %ld, base %ld, pages: %d, length %d\n",
4873 (unsigned long) in_addr, addr, num_pages, len);
4874#endif
4875
4876 /* increase refcount of locked pages
4877 * addr is first page; num_pages is #(consecutive pages) to lock
4878 */
4879
4880 while ((page_list != NULL) && (num_pages > 0))
4881 {
4882#ifdef TEST_MLOCK
4883 fprintf(stderr, "mlock: check page %d: %ld [%d]\n",
4884 i, page_list->page_start, page_list->page_refcount);
4885#endif
4886 if (page_list->page_start == addr)
4887 {
4888 page_list->page_refcount += 1;
4889 num_pages -= 1;
4890 addr += pagesize;
4891#ifdef TEST_MLOCK
4892 fprintf(stderr, "mlock: found page %d: %ld [%d], next page %ld\n",
4893 i, page_list->page_start, page_list->page_refcount, addr);
4894#endif
4895 }
4896#ifdef TEST_MLOCK
4897 ++i;
4898#endif
4899 page_list = page_list->next;
4900 }
4901
4902 /* mlock some more pages, if needed
4903 */
4904 while (num_pages > 0)
4905 {
4906#ifdef TEST_MLOCK
4907 fprintf(stderr, "mlock: lock page %d: mlock %ld [num_pages %d]\n",
4908 i, addr, num_pages);
4909 ++i;
4910#endif
4911 page_list = SH_ALLOC(sizeof(sh_page_l));
4912 page_list->page_start = addr;
4913 page_list->page_refcount = 1;
4914 sl_strlcpy(page_list->file, file, 64);
4915 page_list->line = line;
4916 status = mlock( (void *) addr, pagesize);
4917 if (status != 0)
4918 {
4919#ifdef TEST_MLOCK
4920 char errbuf[SH_ERRBUF_SIZE];
4921 fprintf(stderr, "mlock: error: %s\n",
4922 sh_error_message(errno, errbuf, sizeof(errbuf)));
4923#endif
4924 SH_FREE(page_list);
4925 page_locking = 0;
4926 goto exit_mlock;
4927 }
4928 page_list->next = sh_page_locked;
4929 sh_page_locked = page_list;
4930 num_pages -= 1;
4931 addr += pagesize;
4932 }
4933 page_locking = 0;
4934
4935 exit_mlock:
4936 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
4937
4938 SL_RETURN((status), _("sh_unix_mlock"));
4939}
4940#else
4941int sh_unix_mlock (const char * file, int line, void * in_addr, size_t len)
4942{
4943 (void) file; (void) line;
4944 (void) in_addr; (void) len;
4945 return -1;
4946}
4947#endif
4948
4949#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4950int sh_unix_munlock (void * in_addr, size_t len)
4951{
4952 int num_pages;
4953 int unlocked;
4954 int status;
4955 int pagesize;
4956 sh_page_l * page_list;
4957 sh_page_l * page_last;
4958 unsigned long addr;
4959
4960 int test_count;
4961 int test_status;
4962 int test_pages;
4963
4964#ifdef TEST_MLOCK
4965 int i = 0;
4966#endif
4967
4968 SL_ENTER(_("sh_unix_munlock"));
4969
4970 /* There's no cancellation point here, except if tracing is on
4971 */
4972 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4973
4974 unlocked = 0;
4975 status = 0;
4976 page_list = sh_page_locked;
4977
4978 if (0 != page_locking)
4979 {
4980 status = -1;
4981 goto exit_munlock;
4982 }
4983 page_locking = 1;
4984
4985 pagesize = sh_unix_pagesize();
4986 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4987
4988#ifdef TEST_MLOCK
4989 fprintf(stderr, "munlock: in_addr %ld, addr %ld, pages: %d, length %d\n",
4990 (unsigned long) in_addr, addr, num_pages, len);
4991#endif
4992
4993 test_pages = num_pages;
4994
4995 /* reduce refcount of locked pages
4996 * addr is first page; num_pages is #(consecutive pages) to lock
4997 */
4998 while ((page_list != NULL) && (num_pages > 0))
4999 {
5000#ifdef TEST_MLOCK
5001 fprintf(stderr, "munlock: page %d: %ld [%d]\n",
5002 i, page_list->page_start, page_list->page_refcount);
5003#endif
5004
5005 test_status = 0;
5006 for (test_count = 0; test_count < test_pages; ++test_count)
5007 {
5008 if (page_list->page_start == (addr + (test_count * pagesize)))
5009 {
5010 test_status = 1;
5011 break;
5012 }
5013 }
5014
5015 if (test_status == 1)
5016 {
5017 page_list->page_refcount -= 1;
5018 if (page_list->page_refcount == 0)
5019 {
5020 status = munlock ( (void *) addr, pagesize);
5021 ++unlocked;
5022 }
5023 num_pages -= 1;
5024#ifdef TEST_MLOCK
5025 fprintf(stderr,
5026 "munlock: page %d: %ld [refcount %d], refcount reduced\n",
5027 i, page_list->page_start, page_list->page_refcount);
5028#endif
5029 }
5030#ifdef TEST_MLOCK
5031 ++i;
5032#endif
5033 page_list = page_list->next;
5034 }
5035
5036#ifdef TEST_MLOCK
5037 i = 0;
5038#endif
5039
5040 if (unlocked > 0)
5041 {
5042 page_list = sh_page_locked;
5043 page_last = sh_page_locked;
5044
5045 while ((page_list != NULL) && (unlocked > 0))
5046 {
5047 if (page_list->page_refcount == 0)
5048 {
5049#ifdef TEST_MLOCK
5050 fprintf(stderr, "munlock: remove page %d: %ld [refcount %d]\n",
5051 i, page_list->page_start, page_list->page_refcount);
5052#endif
5053 if (page_last != page_list)
5054 {
5055 page_last->next = page_list->next;
5056 SH_FREE(page_list);
5057 page_list = page_last->next;
5058 }
5059 else
5060 {
5061 page_last = page_list->next;
5062 if (page_list == sh_page_locked)
5063 sh_page_locked = page_list->next;
5064 SH_FREE(page_list);
5065 page_list = page_last;
5066 }
5067 --unlocked;
5068 }
5069 else
5070 {
5071#ifdef TEST_MLOCK
5072 fprintf(stderr, "munlock: skip page %d: %ld [refcount %d]\n",
5073 i, page_list->page_start, page_list->page_refcount);
5074#endif
5075
5076 page_last = page_list;
5077 page_list = page_list->next;
5078 }
5079#ifdef TEST_MLOCK
5080 ++i;
5081#endif
5082 }
5083 }
5084
5085 page_locking = 0;
5086
5087 exit_munlock:
5088 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
5089 SL_RETURN((status), _("sh_unix_munlock"));
5090}
5091#else
5092int sh_unix_munlock (void * in_addr, size_t len)
5093{
5094 (void) in_addr; (void) len;
5095 return -1;
5096}
5097#endif
5098
5099int sh_unix_count_mlock()
5100{
5101 int i = 0;
5102 char str[32][64];
5103 sh_page_l * page_list;
5104
5105 SL_ENTER(_("sh_unix_count_mlock"));
5106
5107#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
5108 /* There's no cancellation point here, except if tracing is on
5109 */
5110 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
5111#endif
5112
5113 page_list = sh_page_locked;
5114
5115 while (page_list != NULL)
5116 {
5117#ifdef WITH_TPT
5118 if (i < 32)
5119 sl_snprintf(str[i], 64, _("file: %s line: %d page: %d"),
5120 page_list->file, page_list->line, i+1);
5121#endif
5122 page_list = page_list->next;
5123 ++i;
5124 }
5125
5126#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
5127 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
5128#endif
5129
5130#ifdef WITH_TPT
5131 {
5132 int j = 0;
5133 while (j < i && j < 32)
5134 {
5135 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, j, MSG_E_SUBGEN,
5136 str[j], _("sh_unix_count_mlock"));
5137 ++j;
5138 }
5139 }
5140#endif
5141
5142 sl_snprintf(str[0], 64, _("%d pages locked"), i);
5143 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, i, MSG_E_SUBGEN,
5144 str[0], _("sh_unix_count_mlock"));
5145 SL_RETURN((i), _("sh_unix_count_mlock"));
5146}
5147
5148/************************************************/
5149/************************************************/
5150/**** Stealth Utilities ****/
5151/************************************************/
5152/************************************************/
5153#ifdef SH_STEALTH
5154
5155void sh_unix_xor_code (char * str, int len)
5156{
5157 register int i;
5158
5159 for (i = 0; i < len; ++i) str[i] ^= (char) XOR_CODE;
5160 return;
5161}
5162
5163#if !defined(SH_STEALTH_MICRO)
5164
5165
5166int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
5167 unsigned long * bytes_read);
5168unsigned long first_hex_block(SL_TICKET fd, unsigned long * max);
5169
5170/*
5171 * --- Get hidden data from a block of hex data. ---
5172 */
5173int sh_unix_getline_stealth (SL_TICKET fd, char * str, int len)
5174{
5175 int add_off = 0, llen;
5176 static unsigned long off_data = 0;
5177 static unsigned long max_data = 0;
5178 static unsigned long bytes_read = 0;
5179 static int stealth_init = BAD;
5180
5181 SL_ENTER(_("sh_unix_getline_stealth"));
5182
5183 if (str == NULL)
5184 {
5185 off_data = 0;
5186 max_data = 0;
5187 bytes_read = 0;
5188 stealth_init = BAD;
5189 SL_RETURN(0, _("sh_unix_getline_stealth"));
5190 }
5191
5192 /* --- Initialize. ---
5193 */
5194 if (stealth_init == BAD)
5195 {
5196 off_data = first_hex_block(fd, &max_data);
5197 if (off_data == 0)
5198 {
5199 dlog(1, FIL__, __LINE__,
5200 _("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"));
5201 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
5202 _("Stealth config file."));
5203 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
5204 }
5205 stealth_init = GOOD;
5206 max_data += off_data;
5207 }
5208
5209 /* --- Seek to proper position. ---
5210 */
5211 if (bytes_read >= max_data || add_off < 0)
5212 {
5213 dlog(1, FIL__, __LINE__,
5214 _("The capacity of the container image file for the stealth config file seems to be too small. Your config file is likely truncated.\n"));
5215 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
5216 _("Stealth config file."));
5217 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
5218 }
5219 sl_seek(fd, off_data);
5220
5221 /* --- Read one line. ---
5222 */
5223 add_off = hideout_hex_block(fd, (unsigned char *) str, len, &bytes_read);
5224 off_data += add_off;
5225
5226 llen = sl_strlen(str);
5227 SL_RETURN(llen, _("sh_unix_getline_stealth"));
5228}
5229
5230int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
5231 unsigned long * bytes_read)
5232{
5233
5234 register int i, j, k;
5235 unsigned char c, e;
5236 register int num;
5237 unsigned char mask[9] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
5238 unsigned long here = 0;
5239 unsigned long retval = 0;
5240 unsigned long bread = 0;
5241
5242 SL_ENTER(_("hideout_hex_block"));
5243
5244 ASSERT_RET((len > 1), _("len > 1"), (0));
5245
5246 --len;
5247
5248 i = 0;
5249 while (i < len)
5250 {
5251 for (j = 0; j < 8; ++j)
5252 {
5253
5254 /* --- Get a low byte, modify, read back. ---
5255 */
5256 for (k = 0; k < 2; ++k)
5257 {
5258 /* -- Skip whitespace. ---
5259 */
5260 c = ' ';
5261 do {
5262 do {
5263 num = sl_read (fd, &c, 1);
5264 } while (num == 0 && errno == EINTR);
5265 if (num > 0)
5266 ++here;
5267 else if (num == 0)
5268 SL_RETURN((0), _("hideout_hex_block"));
5269 else
5270 SL_RETURN((-1), _("hideout_hex_block"));
5271 } while (c == '\n' || c == '\t' || c == '\r' ||
5272 c == ' ');
5273 }
5274
5275
5276 /* --- e is the value of the low byte. ---
5277 */
5278 e = (unsigned char) sh_util_hexchar( c );
5279 if ((e & mask[7]) != 0) /* bit is set */
5280 str[i] |= mask[j];
5281 else /* bit is not set */
5282 str[i] &= ~mask[j];
5283
5284 bread += 1;
5285 }
5286 if (str[i] == '\n') break;
5287 ++i;
5288 }
5289
5290 if (i != 0)
5291 str[i] = '\0';
5292 else
5293 str[i+1] = '\0'; /* keep newline and terminate */
5294 retval += here;
5295 *bytes_read += (bread/8);
5296
5297 SL_RETURN(retval, _("hideout_hex_block"));
5298}
5299
5300/* --- Get offset of first data block. ---
5301 */
5302unsigned long first_hex_block(SL_TICKET fd, unsigned long * max)
5303{
5304 unsigned int i;
5305 long num = 1;
5306 unsigned long lnum;
5307 char c;
5308 int nothex = 0;
5309 unsigned long retval = 0;
5310 unsigned int this_line = 0;
5311 char theline[SH_BUFSIZE];
5312
5313 SL_ENTER(_("first_hex_block"));
5314
5315 *max = 0;
5316
5317 while (1)
5318 {
5319 theline[0] = '\0';
5320 this_line = 0;
5321 c = '\0';
5322 while (c != '\n' && num > 0 && this_line < (sizeof(theline)-1))
5323 {
5324 do {
5325 num = sl_read (fd, &c, 1);
5326 } while (num == 0 && errno == EINTR);
5327 if (num > 0)
5328 theline[this_line] = c;
5329 else
5330 SL_RETURN((0), _("first_hex_block"));
5331 ++this_line;
5332 }
5333 theline[this_line] = '\0';
5334
5335 /* not only 'newline' */
5336 if (this_line > 60)
5337 {
5338 nothex = 0;
5339 i = 0;
5340 while (nothex == 0 && i < (this_line-1))
5341 {
5342 if (! isxdigit((int)theline[i])) nothex = 1;
5343 ++i;
5344 }
5345 if (nothex == 1) retval += this_line;
5346 }
5347 else
5348 {
5349 nothex = 1;
5350 retval += this_line;
5351 }
5352
5353 if (nothex == 0)
5354 {
5355 *max = 0;
5356 do {
5357 do {
5358 num = sl_read (fd, theline, SH_BUFSIZE);
5359 } while (num == 0 && errno == EINTR);
5360 if (num > 0)
5361 {
5362 lnum = (unsigned long) num;
5363 for (i = 0; i < lnum; ++i)
5364 {
5365 c = theline[i];
5366 if (c == '\n' || c == '\t' || c == '\r' || c == ' ')
5367 ;
5368 else if (!isxdigit((int)c))
5369 break;
5370 else
5371 *max += 1;
5372 }
5373 }
5374 } while (num > 0);
5375
5376 *max /= 16;
5377 SL_RETURN((retval), _("first_hex_block"));
5378 }
5379
5380 }
5381 /* SL_RETURN((0), _("first_hex_block")); *//* unreachable */
5382}
5383
5384 /* if !defined(SH_STEALTH_MICRO) */
5385#endif
5386
5387 /* ifdef SH_STEALTH */
5388#endif
5389
5390/*
5391 * anti-debugger code
5392 */
5393#if defined(SCREW_IT_UP)
5394volatile int sh_not_traced = 0;
5395
5396#ifdef HAVE_GETTIMEOFDAY
5397struct timeval save_tv;
5398#endif
5399
5400void sh_sigtrap_handler (int signum)
5401{
5402#ifdef HAVE_GETTIMEOFDAY
5403 struct timeval tv;
5404 long difftv;
5405
5406 gettimeofday(&tv, NULL);
5407 difftv = (tv.tv_sec - save_tv.tv_sec) * 1000000 +
5408 (tv.tv_usec - save_tv.tv_usec);
5409 if (difftv > 500000)
5410 raise(SIGKILL);
5411#endif
5412 sh_not_traced += signum;
5413 return;
5414}
5415#endif
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