source: trunk/src/sh_unix.c@ 319

Last change on this file since 319 was 315, checked in by katerina, 14 years ago

Fix for ticket #236 (blocking on NFS mounts).
File size: 122.8 KB
Line 
1/* SAMHAIN file system integrity testing */
2/* Copyright (C) 1999 Rainer Wichmann */
3/* */
4/* This program is free software; you can redistribute it */
5/* and/or modify */
6/* it under the terms of the GNU General Public License as */
7/* published by */
8/* the Free Software Foundation; either version 2 of the License, or */
9/* (at your option) any later version. */
10/* */
11/* This program is distributed in the hope that it will be useful, */
12/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
13/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
14/* GNU General Public License for more details. */
15/* */
16/* You should have received a copy of the GNU General Public License */
17/* along with this program; if not, write to the Free Software */
18/* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20#include "config_xor.h"
21
22
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <ctype.h>
27#ifdef HAVE_LINUX_FS_H
28#include <linux/fs.h>
29#endif
30
31#ifdef HAVE_MEMORY_H
32#include <memory.h>
33#endif
34
35#ifdef HAVE_UNISTD_H
36#include <errno.h>
37#include <signal.h>
38#include <pwd.h>
39#include <grp.h>
40#include <sys/types.h>
41#include <sys/stat.h>
42#include <sys/resource.h>
43#include <fcntl.h>
44#include <unistd.h>
45/* need to undef these, since the #define's may be picked up from
46 * linux/wait.h, and will clash with a typedef in sys/wait.h
47 */
48#undef P_ALL
49#undef P_PID
50#undef P_PGID
51#include <sys/wait.h>
52
53/*********************
54#ifdef HAVE_SYS_VFS_H
55#include <sys/vfs.h>
56#endif
57**********************/
58#endif
59
60#if TIME_WITH_SYS_TIME
61#include <sys/time.h>
62#include <time.h>
63#else
64#if HAVE_SYS_TIME_H
65#include <sys/time.h>
66#else
67#include <time.h>
68#endif
69#endif
70
71#ifdef HAVE_SYS_SELECT_H
72#include <sys/select.h>
73#endif
74
75#ifndef FD_SET
76#define NFDBITS 32
77#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
78#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
79#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
80#endif /* !FD_SET */
81#ifndef FD_SETSIZE
82#define FD_SETSIZE 32
83#endif
84#ifndef FD_ZERO
85#define FD_ZERO(p) memset((char *)(p), '\0', sizeof(*(p)))
86#endif
87
88
89#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
90#include <sys/mman.h>
91#endif
92
93#include "samhain.h"
94#include "sh_error.h"
95#include "sh_unix.h"
96#include "sh_utils.h"
97#include "sh_mem.h"
98#include "sh_hash.h"
99#include "sh_tools.h"
100#include "sh_restrict.h"
101#include "sh_ipvx.h"
102#include "sh_tiger.h"
103#include "sh_prelink.h"
104#include "sh_pthread.h"
105
106/* moved here from far below
107 */
108#include <netdb.h>
109
110#define SH_NEED_PWD_GRP
111#define SH_NEED_GETHOSTBYXXX
112#include "sh_static.h"
113
114#ifndef HAVE_LSTAT
115#define lstat stat
116#endif
117
118#if defined(S_IFLNK) && !defined(S_ISLNK)
119#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
120#else
121#if !defined(S_ISLNK)
122#define S_ISLNK(mode) (0)
123#endif
124#endif
125
126#if defined(S_IFSOCK) && !defined(S_ISSOCK)
127#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
128#else
129#if !defined(S_ISSOCK)
130#define S_ISSOCK(mode) (0)
131#endif
132#endif
133
134#if defined(S_IFDOOR) && !defined(S_ISDOOR)
135#define S_ISDOOR(mode) (((mode) & S_IFMT) == S_IFDOOR)
136#else
137#if !defined(S_ISDOOR)
138#define S_ISDOOR(mode) (0)
139#endif
140#endif
141
142#if defined(S_IFPORT) && !defined(S_ISPORT)
143#define S_ISPORT(mode) (((mode) & S_IFMT) == S_IFPORT)
144#else
145#if !defined(S_ISPORT)
146#define S_ISPORT(mode) (0)
147#endif
148#endif
149
150#define SH_KEY_NULL _("000000000000000000000000000000000000000000000000")
151
152#undef FIL__
153#define FIL__ _("sh_unix.c")
154
155unsigned long mask_PRELINK = MASK_PRELINK_;
156unsigned long mask_USER0 = MASK_USER_;
157unsigned long mask_USER1 = MASK_USER_;
158unsigned long mask_USER2 = MASK_USER_;
159unsigned long mask_USER3 = MASK_USER_;
160unsigned long mask_USER4 = MASK_USER_;
161unsigned long mask_ALLIGNORE = MASK_ALLIGNORE_;
162unsigned long mask_ATTRIBUTES = MASK_ATTRIBUTES_;
163unsigned long mask_LOGFILES = MASK_LOGFILES_;
164unsigned long mask_LOGGROW = MASK_LOGGROW_;
165unsigned long mask_READONLY = MASK_READONLY_;
166unsigned long mask_NOIGNORE = MASK_NOIGNORE_;
167
168
169extern char **environ;
170
171int sh_unix_maskreset()
172{
173 mask_PRELINK = MASK_PRELINK_;
174 mask_USER0 = MASK_USER_;
175 mask_USER1 = MASK_USER_;
176 mask_USER2 = MASK_USER_;
177 mask_USER3 = MASK_USER_;
178 mask_USER4 = MASK_USER_;
179 mask_ALLIGNORE = MASK_ALLIGNORE_;
180 mask_ATTRIBUTES = MASK_ATTRIBUTES_;
181 mask_LOGFILES = MASK_LOGFILES_;
182 mask_LOGGROW = MASK_LOGGROW_;
183 mask_READONLY = MASK_READONLY_;
184 mask_NOIGNORE = MASK_NOIGNORE_;
185 return 0;
186}
187
188
189#ifdef SYS_SIGLIST_DECLARED
190/* extern const char * const sys_siglist[]; */
191#else
192char * sh_unix_siglist (int signum)
193{
194 switch (signum)
195 {
196#ifdef SIGHUP
197 case SIGHUP:
198 return _("Hangup");
199#endif
200#ifdef SIGINT
201 case SIGINT:
202 return _("Interrupt");
203#endif
204#ifdef SIGQUIT
205 case SIGQUIT:
206 return _("Quit");
207#endif
208#ifdef SIGILL
209 case SIGILL:
210 return _("Illegal instruction");
211#endif
212#ifdef SIGTRAP
213 case SIGTRAP:
214 return _("Trace/breakpoint trap");
215#endif
216#ifdef SIGABRT
217 case SIGABRT:
218 return _("IOT trap/Abort");
219#endif
220#ifdef SIGBUS
221 case SIGBUS:
222 return _("Bus error");
223#endif
224#ifdef SIGFPE
225 case SIGFPE:
226 return _("Floating point exception");
227#endif
228#ifdef SIGUSR1
229 case SIGUSR1:
230 return _("User defined signal 1");
231#endif
232#ifdef SIGSEGV
233 case SIGSEGV:
234 return _("Segmentation fault");
235#endif
236#ifdef SIGUSR2
237 case SIGUSR2:
238 return _("User defined signal 2");
239#endif
240#ifdef SIGPIPE
241 case SIGPIPE:
242 return _("Broken pipe");
243#endif
244#ifdef SIGALRM
245 case SIGALRM:
246 return _("Alarm clock");
247#endif
248#ifdef SIGTERM
249 case SIGTERM:
250 return _("Terminated");
251#endif
252#ifdef SIGSTKFLT
253 case SIGSTKFLT:
254 return _("Stack fault");
255#endif
256#ifdef SIGCHLD
257 case SIGCHLD:
258 return _("Child exited");
259#endif
260#ifdef SIGCONT
261 case SIGCONT:
262 return _("Continued");
263#endif
264#ifdef SIGSTOP
265 case SIGSTOP:
266 return _("Stopped");
267#endif
268#ifdef SIGTSTP
269 case SIGTSTP:
270 return _("Stop typed at tty");
271#endif
272#ifdef SIGTTIN
273 case SIGTTIN:
274 return _("Stopped (tty input)");
275#endif
276#ifdef SIGTTOU
277 case SIGTTOU:
278 return _("Stopped (tty output)");
279#endif
280#ifdef SIGURG
281 case SIGURG:
282 return _("Urgent condition");
283#endif
284#ifdef SIGXCPU
285 case SIGXCPU:
286 return _("CPU time limit exceeded");
287#endif
288#ifdef SIGXFSZ
289 case SIGXFSZ:
290 return _("File size limit exceeded");
291#endif
292#ifdef SIGVTALRM
293 case SIGVTALRM:
294 return _("Virtual time alarm");
295#endif
296#ifdef SIGPROF
297 case SIGPROF:
298 return _("Profile signal");
299#endif
300#ifdef SIGWINCH
301 case SIGWINCH:
302 return _("Window size changed");
303#endif
304#ifdef SIGIO
305 case SIGIO:
306 return _("Possible I/O");
307#endif
308#ifdef SIGPWR
309 case SIGPWR:
310 return _("Power failure");
311#endif
312#ifdef SIGUNUSED
313 case SIGUNUSED:
314 return _("Unused signal");
315#endif
316 }
317 return _("Unknown");
318}
319#endif
320
321
322/* Log from within a signal handler without using any
323 * functions that are not async signal safe.
324 *
325 * This is the safe_itoa helper function.
326 */
327char * safe_itoa(int i, char * str, int size)
328{
329 unsigned int u;
330 int iisneg = 0;
331 char *p = &str[size-1];
332
333 *p = '\0';
334 if (i < 0) {
335 iisneg = 1;
336 u = ((unsigned int)(-(1+i))) + 1;
337 } else {
338 u = i;
339 }
340 do {
341 --p;
342 *p = '0' + (u % 10);
343 u /= 10;
344 } while (u && (p != str));
345 if ((iisneg == 1) && (p != str)) {
346 --p;
347 *p = '-';
348 }
349 return p;
350}
351
352/* Log from within a signal handler without using any
353 * functions that are not async signal safe.
354 *
355 * This is the safe_logger function.
356 * Arguments: signal (signal number), method (0=logger, 1=stderr), thepid (pid)
357 */
358extern int OnlyStderr;
359
360int safe_logger (int thesignal, int method, char * details)
361{
362 unsigned int i = 0;
363 int status = -1;
364 struct stat buf;
365 pid_t newpid;
366 char str[128];
367 char * p;
368
369 char l0[64], l1[64], l2[64], l3[64];
370 char a0[32], a1[32], a2[32];
371 char e0[128];
372 char msg[128];
373
374 char * locations[] = { NULL, NULL, NULL, NULL, NULL };
375 char * envp[] = { NULL, NULL };
376 char * argp[] = { NULL, NULL, NULL, NULL, NULL };
377
378 pid_t thepid = getpid();
379
380 if ((sh.flag.isdaemon == S_FALSE) || (OnlyStderr == S_TRUE))
381 method = 1;
382
383 /* seems that solaris cc needs this way of initializing ...
384 */
385 locations[0] = l0;
386 locations[1] = l1;
387 locations[2] = l2;
388 locations[3] = l3;
389
390 envp[0] = e0;
391
392 argp[0] = a0;
393 argp[1] = a1;
394 argp[2] = a2;
395
396 sl_strlcpy(msg, _("samhain["), 128);
397 p = safe_itoa((int) thepid, str, 128);
398 if (p && *p)
399 sl_strlcat(msg, p, 128);
400 if (thesignal == 0)
401 {
402 if (details == NULL) {
403 sl_strlcat(msg, _("]: out of memory"), 128);
404 } else {
405 sl_strlcat(msg, _("]: "), 128);
406 sl_strlcat(msg, details, 128);
407 }
408 }
409 else
410 {
411 sl_strlcat(msg, _("]: exit on signal "), 128);
412 p = safe_itoa(thesignal, str, 128);
413 if (p && *p)
414 sl_strlcat(msg, p, 128);
415 }
416
417 if (method == 1) {
418#ifndef STDERR_FILENO
419#define STDERR_FILENO 2
420#endif
421 int retval = 0;
422 do {
423 retval = write(STDERR_FILENO, msg, strlen(msg));
424 } while (retval < 0 && errno == EINTR);
425 do {
426 retval = write(STDERR_FILENO, "\n", 1);
427 } while (retval < 0 && errno == EINTR);
428 return 0;
429 }
430
431 sl_strlcpy (l0, _("/usr/bin/logger"), 64);
432 sl_strlcpy (l1, _("/usr/sbin/logger"), 64);
433 sl_strlcpy (l2, _("/usr/ucb/logger"), 64);
434 sl_strlcpy (l3, _("/bin/logger"), 64);
435
436 sl_strlcpy (a0, _("logger"), 32);
437 sl_strlcpy (a1, _("-p"), 32);
438 sl_strlcpy (a2, _("daemon.alert"), 32);
439
440 sl_strlcpy (e0,
441 _("PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/ucb:/usr/local/bin"),
442 128);
443
444 while (locations[i] != NULL) {
445 status = stat(locations[i], &buf);
446 if (status == 0)
447 break;
448 ++i;
449 }
450
451 if (locations[i] != NULL) {
452 argp[3] = msg;
453 newpid = fork();
454 if (newpid == 0) {
455 execve(locations[i], argp, envp);
456 _exit(1);
457 }
458 else if (newpid > 0) {
459 waitpid(newpid, &status, WUNTRACED);
460 }
461 }
462 return 0;
463}
464
465void safe_fatal (const char * details,
466 const char * file, int line)
467{
468 char msg[128];
469 char str[128];
470 char * p;
471 int thesignal = 0;
472 int method = 0;
473
474 p = safe_itoa((int) line, str, 128);
475 sl_strlcpy(msg, _("FATAL: "), 128);
476 sl_strlcat(msg, file, 128);
477 sl_strlcat(msg, ": ", 128);
478 if (p && (*p)) {
479 sl_strlcat(msg, p , 128);
480 sl_strlcat(msg, ": ", 128);
481 }
482 sl_strlcat(msg, details, 128);
483 (void) safe_logger (thesignal, method, msg);
484 raise(SIGKILL);
485}
486
487extern char sh_sig_msg[64];
488
489volatile int immediate_exit_normal = 0;
490
491#if defined(SA_SIGACTION_WORKS)
492static
493void sh_unix_sigexit (int mysignal, siginfo_t * signal_info, void * signal_add)
494#else
495static
496void sh_unix_sigexit (int mysignal)
497#endif
498{
499
500#if defined(SA_SIGACTION_WORKS)
501 if (signal_info != NULL && signal_info->si_code == SI_USER &&
502 mysignal != SIGTERM && mysignal != SIGINT)
503 {
504 return;
505 }
506
507 /* avoid compiler warning (unused var)
508 */
509 (void) signal_add;
510#endif
511
512 /*
513 * Block re-entry
514 */
515 if (immediate_exit_normal > 0)
516 {
517 ++immediate_exit_normal;
518 if ((skey != NULL) && (immediate_exit_normal == 2))
519 memset (skey, '\0', sizeof(sh_key_t));
520 if (immediate_exit_normal == 2)
521 {
522 int val_return;
523
524 do {
525 val_return = chdir ("/");
526 } while (val_return < 0 && errno == EINTR);
527
528 safe_logger (mysignal, 0, NULL);
529 }
530 raise(SIGKILL);
531 }
532 else
533 {
534 immediate_exit_normal = 1;
535 }
536
537#ifdef SYS_SIGLIST_DECLARED
538 strncpy (sh_sig_msg, sys_siglist[mysignal], 40);
539#else
540 strncpy (sh_sig_msg, sh_unix_siglist(mysignal), 40);
541#endif
542 sh_sig_msg[63] = '\0';
543
544 ++sig_raised;
545 ++sig_urgent;
546 sig_termfast = 1;
547 return;
548}
549
550volatile int immediate_exit_fast = 0;
551
552#if defined(SA_SIGACTION_WORKS)
553static
554void sh_unix_sigexit_fast (int mysignal, siginfo_t * signal_info,
555 void * signal_add)
556#else
557static
558void sh_unix_sigexit_fast (int mysignal)
559#endif
560{
561#if defined(SL_DEBUG) && (defined(USE_SYSTEM_MALLOC) || !defined(USE_MALLOC_LOCK))
562 int retval;
563#endif
564
565#if defined(SA_SIGACTION_WORKS)
566 if (signal_info != NULL && signal_info->si_code == SI_USER)
567 {
568 return;
569 }
570#endif
571
572 /* avoid compiler warning (unused var)
573 */
574#if defined(SA_SIGACTION_WORKS)
575 (void) signal_add;
576#endif
577
578 /* Check whether the heap is ok; otherwise _exit
579 */
580#if !defined(SL_DEBUG) || (!defined(USE_SYSTEM_MALLOC) && defined(USE_MALLOC_LOCK))
581 ++immediate_exit_fast;
582 if (skey != NULL && immediate_exit_fast < 2)
583 memset (skey, '\0', sizeof(sh_key_t));
584 if (immediate_exit_fast < 2)
585 safe_logger (mysignal, 0, NULL);
586 raise(SIGKILL);
587#else
588
589 /* debug code
590 */
591 if (immediate_exit_fast == 1)
592 {
593 ++immediate_exit_fast;
594 if (skey != NULL)
595 memset (skey, '\0', sizeof(sh_key_t));
596#ifdef WITH_MESSAGE_QUEUE
597 close_ipc ();
598#endif
599 safe_logger (mysignal, 0, NULL);
600 do {
601 retval = chdir ("/");
602 } while (retval < 0 && errno == EINTR);
603 raise(SIGFPE);
604 }
605 else if (immediate_exit_fast == 2)
606 {
607 do {
608 retval = chdir ("/");
609 } while (retval < 0 && errno == EINTR);
610 raise(SIGFPE);
611 }
612 else if (immediate_exit_fast != 0)
613 {
614 raise(SIGKILL);
615 }
616
617 ++immediate_exit_fast;
618
619 /* The FPE|BUS|SEGV|ILL signals leave the system in an undefined
620 * state, thus it is best to exit immediately.
621 */
622#ifdef SYS_SIGLIST_DECLARED
623 strncpy (sh_sig_msg, sys_siglist[mysignal], 40);
624#else
625 strncpy (sh_sig_msg, sh_unix_siglist(mysignal), 40);
626#endif
627 sh_sig_msg[63] = '\0';
628
629 sl_stack_print();
630
631 /* Try to push out an error message.
632 */
633 sh_error_handle ((-1), FIL__, __LINE__, mysignal, MSG_EXIT_NORMAL,
634 sh.prg_name, sh_sig_msg);
635
636 if (skey != NULL)
637 memset (skey, '\0', sizeof(sh_key_t));
638#ifdef WITH_MESSAGE_QUEUE
639 close_ipc ();
640#endif
641
642 do {
643 retval = chdir ("/");
644 } while (retval < 0 && errno == EINTR);
645
646 raise(SIGFPE);
647#endif
648}
649
650
651static
652void sh_unix_sigaction (int mysignal)
653{
654 ++sig_raised;
655#ifdef SIGUSR1
656 if (mysignal == SIGUSR1)
657 sig_debug_switch = 1;
658#endif
659#ifdef SIGUSR2
660 if (mysignal == SIGUSR2)
661 {
662 ++sig_suspend_switch;
663 ++sig_urgent;
664 }
665#endif
666#ifdef SIGHUP
667 if (mysignal == SIGHUP)
668 sig_config_read_again = 1;
669#endif
670#ifdef SIGTTOU
671 if (mysignal == SIGTTOU)
672 sig_force_check = 1;
673#endif
674#ifdef SIGTTIN
675 if (mysignal == SIGTTIN)
676 sig_fresh_trail = 1;
677#endif
678#ifdef SIGABRT
679 if (mysignal == SIGABRT)
680 sig_fresh_trail = 1;
681#endif
682#ifdef SIGQUIT
683 if (mysignal == SIGQUIT)
684 {
685 sig_terminate = 1;
686 ++sig_urgent;
687 }
688#endif
689#ifdef SIGTERM
690 if (mysignal == SIGTERM)
691 {
692 strncpy (sh_sig_msg, _("Terminated"), 40);
693 sig_termfast = 1;
694 ++sig_urgent;
695 }
696#endif
697
698 return;
699}
700
701static
702void sh_unix_siginstall (int goDaemon)
703{
704 struct sigaction act, act_fast, act2, oldact, ignact;
705#if defined (SH_WITH_SERVER)
706 (void) goDaemon;
707#endif
708
709 SL_ENTER(_("sh_unix_siginstall"));
710
711 ignact.sa_handler = SIG_IGN; /* signal action */
712 sigemptyset( &ignact.sa_mask ); /* set an empty mask */
713 ignact.sa_flags = 0; /* init sa_flags */
714
715#if defined(SA_SIGACTION_WORKS)
716 act.sa_sigaction = &sh_unix_sigexit; /* signal action */
717#else
718 act.sa_handler = &sh_unix_sigexit; /* signal action */
719#endif
720
721 sigfillset ( &act.sa_mask ); /* set a full mask */
722
723
724 /* Block all but deadly signals.
725 */
726#ifdef SIGILL
727 sigdelset ( &act.sa_mask, SIGILL );
728#endif
729#ifndef SL_DEBUG
730#ifdef SIGFPE
731 sigdelset ( &act.sa_mask, SIGFPE );
732#endif
733#endif
734#ifdef SIGSEGV
735 sigdelset ( &act.sa_mask, SIGSEGV );
736#endif
737#ifdef SIGBUS
738 sigdelset ( &act.sa_mask, SIGBUS );
739#endif
740
741#if defined(SA_SIGACTION_WORKS)
742 act_fast.sa_sigaction = &sh_unix_sigexit_fast; /* signal action */
743#else
744 act_fast.sa_handler = &sh_unix_sigexit_fast; /* signal action */
745#endif
746
747 sigfillset ( &act_fast.sa_mask ); /* set a full mask */
748
749#ifdef SIGILL
750 sigdelset ( &act_fast.sa_mask, SIGILL );
751#endif
752#ifndef SL_DEBUG
753#ifdef SIGFPE
754 sigdelset ( &act_fast.sa_mask, SIGFPE );
755#endif
756#endif
757#ifdef SIGSEGV
758 sigdelset ( &act_fast.sa_mask, SIGSEGV );
759#endif
760#ifdef SIGBUS
761 sigdelset ( &act_fast.sa_mask, SIGBUS );
762#endif
763
764
765 /* Use siginfo to verify origin of signal, if possible.
766 */
767#if defined(SA_SIGACTION_WORKS)
768 act.sa_flags = SA_SIGINFO;
769 act_fast.sa_flags = SA_SIGINFO;
770#else
771 act.sa_flags = 0;
772 act_fast.sa_flags = 0;
773#endif
774
775 /* Do not block the signal from being received in its handler ...
776 * (is this a good or a bad idea ??).
777 */
778#if defined(SA_NOMASK)
779 act_fast.sa_flags |= SA_NOMASK;
780#elif defined(SA_NODEFER)
781 act_fast.sa_flags |= SA_NODEFER;
782#endif
783
784
785 act2.sa_handler = &sh_unix_sigaction; /* signal action */
786 sigemptyset( &act2.sa_mask ); /* set an empty mask */
787 act2.sa_flags = 0; /* init sa_flags */
788
789 /* signals to control the daemon */
790
791#ifdef SIGHUP
792 retry_sigaction(FIL__, __LINE__, SIGHUP, &act2, &oldact);
793#endif
794#ifdef SIGABRT
795 retry_sigaction(FIL__, __LINE__, SIGABRT, &act2, &oldact);
796#endif
797#ifdef SIGUSR1
798 retry_sigaction(FIL__, __LINE__, SIGUSR1, &act2, &oldact);
799#endif
800#ifdef SIGUSR2
801 retry_sigaction(FIL__, __LINE__, SIGUSR2, &act2, &oldact);
802#endif
803#ifdef SIGQUIT
804 retry_sigaction(FIL__, __LINE__, SIGQUIT, &act2, &oldact);
805#endif
806#ifdef SIGTERM
807 retry_sigaction(FIL__, __LINE__, SIGTERM, &act, &oldact);
808#endif
809
810 /* fatal signals that may cause termination */
811
812#ifdef SIGILL
813 retry_sigaction(FIL__, __LINE__, SIGILL, &act_fast, &oldact);
814#endif
815#ifndef SL_DEBUG
816#ifdef SIGFPE
817 retry_sigaction(FIL__, __LINE__, SIGFPE, &act_fast, &oldact);
818#endif
819#endif
820#ifdef SIGSEGV
821 retry_sigaction(FIL__, __LINE__, SIGSEGV, &act_fast, &oldact);
822#endif
823#ifdef SIGBUS
824 retry_sigaction(FIL__, __LINE__, SIGBUS, &act_fast, &oldact);
825#endif
826
827 /* other signals */
828
829#ifdef SIGINT
830 retry_sigaction(FIL__, __LINE__, SIGINT, &act, &oldact);
831#endif
832#ifdef SIGPIPE
833#ifdef HAVE_PTHREAD
834 retry_sigaction(FIL__, __LINE__, SIGPIPE, &ignact, &oldact);
835#else
836 retry_sigaction(FIL__, __LINE__, SIGPIPE, &act, &oldact);
837#endif
838#endif
839#ifdef SIGALRM
840 retry_sigaction(FIL__, __LINE__, SIGALRM, &ignact, &oldact);
841#endif
842#ifdef SIGTSTP
843 retry_sigaction(FIL__, __LINE__, SIGTSTP, &ignact, &oldact);
844#endif
845
846#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
847#ifdef SIGTTOU
848 if (goDaemon == 1)
849 retry_sigaction(FIL__, __LINE__, SIGTTOU, &act2, &oldact);
850 else
851 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
852#endif
853#ifdef SIGTTIN
854 if (goDaemon == 1)
855 retry_sigaction(FIL__, __LINE__, SIGTTIN, &act2, &oldact);
856 else
857 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
858#endif
859#else
860#ifdef SIGTTOU
861 retry_sigaction(FIL__, __LINE__, SIGTTOU, &ignact, &oldact);
862#endif
863#ifdef SIGTTIN
864 retry_sigaction(FIL__, __LINE__, SIGTTIN, &ignact, &oldact);
865#endif
866#endif
867
868#ifdef SIGTRAP
869#if !defined(SCREW_IT_UP)
870 retry_sigaction(FIL__, __LINE__, SIGTRAP, &act, &oldact);
871#endif
872#endif
873
874#ifdef SIGPOLL
875 retry_sigaction(FIL__, __LINE__, SIGPOLL, &ignact, &oldact);
876#endif
877#if defined(SIGPROF) && !defined(SH_PROFILE)
878 retry_sigaction(FIL__, __LINE__, SIGPROF, &ignact, &oldact);
879#endif
880#ifdef SIGSYS
881 retry_sigaction(FIL__, __LINE__, SIGSYS, &act, &oldact);
882#endif
883#ifdef SIGURG
884 retry_sigaction(FIL__, __LINE__, SIGURG, &ignact, &oldact);
885#endif
886#if defined(SIGVTALRM) && !defined(SH_PROFILE)
887 retry_sigaction(FIL__, __LINE__, SIGVTALRM, &ignact, &oldact);
888#endif
889#ifdef SIGXCPU
890 retry_sigaction(FIL__, __LINE__, SIGXCPU, &act, &oldact);
891#endif
892#ifdef SIGXFSZ
893 retry_sigaction(FIL__, __LINE__, SIGXFSZ, &act, &oldact);
894#endif
895
896#ifdef SIGEMT
897 retry_sigaction(FIL__, __LINE__, SIGEMT, &ignact, &oldact);
898#endif
899#ifdef SIGSTKFLT
900 retry_sigaction(FIL__, __LINE__, SIGSTKFLT, &act, &oldact);
901#endif
902#ifdef SIGIO
903 retry_sigaction(FIL__, __LINE__, SIGIO, &ignact, &oldact);
904#endif
905#ifdef SIGPWR
906 retry_sigaction(FIL__, __LINE__, SIGPWR, &act, &oldact);
907#endif
908
909#ifdef SIGLOST
910 retry_sigaction(FIL__, __LINE__, SIGLOST, &ignact, &oldact);
911#endif
912#ifdef SIGUNUSED
913 retry_sigaction(FIL__, __LINE__, SIGUNUSED, &ignact, &oldact);
914#endif
915
916 SL_RET0(_("sh_unix_siginstall"));
917}
918
919/* ---------------------------------------------------------------- */
920
921/* checksum the own binary
922 */
923int sh_unix_self_hash (const char * c)
924{
925 char message[512];
926 char hashbuf[KEYBUF_SIZE];
927
928 SL_ENTER(_("sh_unix_self_hash"));
929
930 if (c == NULL)
931 {
932 sh.exec.path[0] = '\0';
933 SL_RETURN((0), _("sh_unix_self_hash"));
934 }
935 sl_strlcpy(sh.exec.path, c, SH_PATHBUF);
936
937 sl_strlcpy(sh.exec.hash,
938 sh_tiger_hash (c, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
939 KEY_LEN+1);
940 sl_snprintf(message, 512, _("%s has checksum: %s"),
941 sh.exec.path, sh.exec.hash);
942 message[511] = '\0';
943 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
944 message, _("sh_unix_self_hash"));
945 if (0 == sl_strcmp(sh.exec.hash, SH_KEY_NULL ))
946 {
947 dlog(1, FIL__, __LINE__,
948 _("Could not checksum my own executable because of the\nfollowing error: %s: %s\n\nPossible reasons include:\n Wrong path in configure file option SamhainPath=/path/to/executable\n No read permission for the effective UID: %d\n"),
949 sh.exec.path, sl_get_errmsg(), (int) sl_ret_euid());
950 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_NOACCESS,
951 (long) sh.real.uid, c);
952 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
953 }
954 SL_RETURN((0), _("sh_unix_self_hash"));
955}
956
957int sh_unix_self_check ()
958{
959 char newhash[KEY_LEN+1];
960 char message[512];
961 char hashbuf[KEYBUF_SIZE];
962
963 SL_ENTER(_("sh_unix_self_check"));
964 if (sh.exec.path == NULL || sh.exec.path[0] == '\0')
965 SL_RETURN((0), _("sh_unix_self_check"));
966
967 sl_strlcpy(newhash,
968 sh_tiger_hash (sh.exec.path, TIGER_FILE, TIGER_NOLIM, hashbuf, sizeof(hashbuf)),
969 KEY_LEN+1);
970 if (0 == sl_strncmp(sh.exec.hash,
971 newhash,
972 KEY_LEN))
973 SL_RETURN((0), _("sh_unix_self_check"));
974
975
976 dlog(1, FIL__, __LINE__,
977 _("The checksum of the executable: %s has changed since startup (%s -> %s).\n"),
978 sh.exec.path, sh.exec.hash, newhash);
979
980 sl_snprintf(message, 512,
981 _("The checksum of %s has changed since startup (%s -> %s)"),
982 sh.exec.path, sh.exec.hash, newhash);
983 message[511] = '\0';
984
985 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, 0, MSG_E_SUBGEN,
986 message, _("sh_unix_self_check"));
987 sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_E_AUTH,
988 sh.exec.path);
989 SL_RETURN((-1), _("sh_unix_self_check"));
990}
991
992
993/* ---------------------------------------------------------------- */
994
995
996/* added Tue Feb 22 10:36:44 NFT 2000 Rainer Wichmann */
997static int tf_add_trusted_user_int(const char * c)
998{
999 struct passwd * w;
1000 int count;
1001 uid_t pwid = (uid_t)-1;
1002
1003#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1004 struct passwd pwd;
1005 char * buffer;
1006#endif
1007
1008 SL_ENTER(_("tf_add_trusted_user_int"));
1009
1010 /* First check for a user name.
1011 */
1012#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1013 buffer = SH_ALLOC(SH_PWBUF_SIZE);
1014 sh_getpwnam_r(c, &pwd, buffer, SH_PWBUF_SIZE, &w);
1015#else
1016 w = sh_getpwnam(c);
1017#endif
1018
1019 if ((w != NULL) && ((pwid = w->pw_uid) > 0))
1020 goto succe;
1021
1022 /* Failed, so check for a numerical value.
1023 */
1024 pwid = strtol(c, (char **)NULL, 10);
1025 if (pwid > 0 && pwid < 65535)
1026 goto succe;
1027
1028 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1029 _("add trusted user"), c);
1030#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1031 SH_FREE(buffer);
1032#endif
1033 SL_RETURN((-1), _("tf_add_trusted_user_int"));
1034
1035 succe:
1036 count = sl_trust_add_user(pwid);
1037#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1038 SH_FREE(buffer);
1039#endif
1040 SL_RETURN((count), _("tf_add_trusted_user_int"));
1041}
1042
1043int tf_add_trusted_user(const char * c)
1044{
1045 int i;
1046 char * q;
1047 char * p = sh_util_strdup (c);
1048#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1049 char * saveptr;
1050#endif
1051
1052 SL_ENTER(_("tf_add_trusted_user"));
1053
1054#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1055 q = strtok_r(p, ", \t", &saveptr);
1056#else
1057 q = strtok(p, ", \t");
1058#endif
1059 if (!q)
1060 {
1061 SH_FREE(p);
1062 SL_RETURN((-1), _("tf_add_trusted_user"));
1063 }
1064 while (q)
1065 {
1066 i = tf_add_trusted_user_int(q);
1067 if (SL_ISERROR(i))
1068 {
1069 SH_FREE(p);
1070 SL_RETURN((i), _("tf_add_trusted_user"));
1071 }
1072#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_STRTOK_R)
1073 q = strtok_r(NULL, ", \t", &saveptr);
1074#else
1075 q = strtok(NULL, ", \t");
1076#endif
1077 }
1078 SH_FREE(p);
1079 SL_RETURN((0), _("tf_add_trusted_user"));
1080}
1081
1082extern uid_t sl_trust_baduid(void);
1083extern gid_t sl_trust_badgid(void);
1084
1085#if defined(HOST_IS_CYGWIN) || defined(__cygwin__) || defined(__CYGWIN32__) || defined(__CYGWIN__)
1086int tf_trust_check (const char * file, int mode)
1087{
1088 (void) file;
1089 (void) mode;
1090 return 0;
1091}
1092#else
1093int tf_trust_check (const char * file, int mode)
1094{
1095 char * tmp;
1096 char * tmp2;
1097 char * p;
1098 int status;
1099 int level;
1100 uid_t ff_euid;
1101
1102 SL_ENTER(_("tf_trust_check"));
1103
1104 if (mode == SL_YESPRIV)
1105 sl_get_euid(&ff_euid);
1106 else
1107 sl_get_ruid(&ff_euid);
1108
1109#if defined(SH_WITH_SERVER)
1110 if (0 == sl_ret_euid()) /* privileges not dropped yet */
1111 {
1112#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1113 struct passwd pwd;
1114 char * buffer = SH_ALLOC(SH_PWBUF_SIZE);
1115 struct passwd * tempres;
1116 sh_getpwnam_r(DEFAULT_IDENT, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
1117#else
1118 struct passwd * tempres = sh_getpwnam(DEFAULT_IDENT);
1119#endif
1120
1121 if (!tempres)
1122 {
1123 dlog(1, FIL__, __LINE__,
1124 _("User %s does not exist. Please add the user to your system.\n"),
1125 DEFAULT_IDENT);
1126 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
1127 }
1128 ff_euid = tempres->pw_uid;
1129#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
1130 SH_FREE(buffer);
1131#endif
1132 }
1133#endif
1134
1135 status = sl_trustfile_euid(file, ff_euid);
1136
1137 if ( SL_ENONE != status)
1138 {
1139 if (status == SL_ESTAT)
1140 level = SH_ERR_ALL;
1141 else
1142 level = SH_ERR_ERR;
1143
1144 tmp = sh_util_safe_name (file);
1145 p = sl_trust_errfile();
1146 if (p && *p != '\0')
1147 {
1148 tmp2 = sh_util_safe_name (sl_trust_errfile());
1149 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST2,
1150 sl_error_string(status), tmp, tmp2);
1151 SH_FREE(tmp2);
1152 }
1153 else
1154 {
1155 sh_error_handle(level, FIL__, __LINE__, status, MSG_E_TRUST1,
1156 sl_error_string(status), tmp);
1157 }
1158 SH_FREE(tmp);
1159
1160 if (status == SL_EBADUID || status == SL_EBADGID ||
1161 status == SL_EBADOTH || status == SL_ETRUNC ||
1162 status == SL_EINTERNAL )
1163 {
1164 switch (status) {
1165 case SL_EINTERNAL:
1166 dlog(1, FIL__, __LINE__,
1167 _("An internal error occured in the trustfile function.\n"));
1168 break;
1169 case SL_ETRUNC:
1170 tmp = sh_util_safe_name (file);
1171 dlog(1, FIL__, __LINE__,
1172 _("A filename truncation occured in the trustfile function.\nProbably the normalized filename for %s\nis too long. This may be due e.g. to deep or circular softlinks.\n"),
1173 tmp);
1174 SH_FREE(tmp);
1175 break;
1176 case SL_EBADOTH:
1177 tmp = sh_util_safe_name (file);
1178 p = sl_trust_errfile();
1179 dlog(1, FIL__, __LINE__,
1180 _("The path element: %s\nin the filename: %s is world writeable.\n"),
1181 p, tmp);
1182 SH_FREE(tmp);
1183 break;
1184 case SL_EBADUID:
1185 tmp = sh_util_safe_name (file);
1186 p = sl_trust_errfile();
1187 dlog(1, FIL__, __LINE__,
1188 _("The owner (UID = %ld) of the path element: %s\nin the filename: %s\nis not in the list of trusted users.\nTo fix the problem, you can:\n - run ./configure again with the option --with-trusted=0,...,UID\n where UID is the UID of the untrusted user, or\n - use the option TrustedUser=UID in the configuration file.\n"),
1189 (UID_CAST)sl_trust_baduid(), p, tmp);
1190 SH_FREE(tmp);
1191 break;
1192 case SL_EBADGID:
1193 tmp = sh_util_safe_name (file);
1194 p = sl_trust_errfile();
1195 dlog(1, FIL__, __LINE__,
1196 _("The path element: %s\nin the filename: %s\nis group writeable (GID = %ld), and at least one of the group\nmembers (UID = %ld) is not in the list of trusted users.\nTo fix the problem, you can:\n - run ./configure again with the option --with-trusted=0,...,UID\n where UID is the UID of the untrusted user, or\n - use the option TrustedUser=UID in the configuration file.\n"),
1197 p, tmp, (UID_CAST)sl_trust_badgid(),
1198 (UID_CAST)sl_trust_baduid());
1199 SH_FREE(tmp);
1200 break;
1201 default:
1202 break;
1203 }
1204
1205 SL_RETURN((-1), _("tf_trust_check"));
1206 }
1207 }
1208
1209 SL_RETURN((0), _("tf_trust_check"));
1210}
1211#endif
1212
1213#ifdef HAVE_INITGROUPS
1214#ifdef HOST_IS_OSF
1215int sh_unix_initgroups ( char * in_user, gid_t in_gid)
1216#else
1217int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1218#endif
1219{
1220 int status = -1;
1221 status = sh_initgroups (in_user, in_gid);
1222 if (status < 0)
1223 {
1224 if (errno == EPERM)
1225 return 0;
1226 if (errno == EINVAL)
1227 return 0;
1228 return -1;
1229 }
1230 return 0;
1231}
1232#else
1233int sh_unix_initgroups (const char * in_user, gid_t in_gid)
1234{
1235 (void) in_user;
1236 (void) in_gid;
1237 return 0;
1238}
1239#endif
1240
1241#ifdef HAVE_INITGROUPS
1242char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len);
1243int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1244{
1245 int status = -1;
1246 char user[SH_MINIBUF];
1247
1248 SL_ENTER(_("sh_unix_initgroups2"));
1249
1250 if (NULL == sh_unix_getUIDname (SH_ERR_ERR, in_pid, user, sizeof(user)))
1251 SL_RETURN((-1), _("sh_unix_initgroups2"));
1252 status = sh_initgroups (user, in_gid);
1253 if (status < 0)
1254 {
1255 if (errno == EPERM)
1256 status = 0;
1257 if (errno == EINVAL)
1258 status = 0;
1259 }
1260 SL_RETURN((status), _("sh_unix_initgroups2"));
1261}
1262#else
1263int sh_unix_initgroups2 (uid_t in_pid, gid_t in_gid)
1264{
1265 (void) in_pid;
1266 (void) in_gid;
1267 return 0;
1268}
1269#endif
1270
1271void sh_unix_closeall (int fd, int except, int inchild)
1272{
1273 int fdx = fd;
1274#ifdef _SC_OPEN_MAX
1275 int fdlimit = sysconf (_SC_OPEN_MAX);
1276#else
1277#ifdef OPEN_MAX
1278 int fdlimit = OPEN_MAX;
1279#else
1280 int fdlimit = _POSIX_OPEN_MAX;
1281#endif
1282#endif
1283
1284 SL_ENTER(_("sh_unix_closeall"));
1285
1286 /* can't happen - so fix it :-(
1287 */
1288 if (fdlimit < 0)
1289 fdlimit = 20; /* POSIX lower limit */
1290
1291 if (fdlimit > 65536)
1292 fdlimit = 65536;
1293
1294 if (!inchild)
1295 sl_dropall (fdx, except);
1296 else
1297 sl_dropall_dirty (fdx, except);
1298
1299 /* Close everything from fd (inclusive) up to fdlimit (exclusive).
1300 */
1301 while (fd < fdlimit)
1302 {
1303 if (fd == except)
1304 fd++;
1305 else if (slib_do_trace != 0 && fd == slib_trace_fd)
1306 fd++;
1307 else
1308 sl_close_fd(FIL__, __LINE__, fd++);
1309 }
1310
1311 SL_RET0(_("sh_unix_closeall"));
1312}
1313
1314static void sh_unix_setlimits(void)
1315{
1316 struct rlimit limits;
1317
1318 SL_ENTER(_("sh_unix_setlimits"));
1319
1320 limits.rlim_cur = RLIM_INFINITY;
1321 limits.rlim_max = RLIM_INFINITY;
1322
1323#ifdef RLIMIT_CPU
1324 setrlimit (RLIMIT_CPU, &limits);
1325#endif
1326#ifdef RLIMIT_FSIZE
1327 setrlimit (RLIMIT_FSIZE, &limits);
1328#endif
1329#ifdef RLIMIT_DATA
1330 setrlimit (RLIMIT_DATA, &limits);
1331#endif
1332#ifdef RLIMIT_STACK
1333 setrlimit (RLIMIT_STACK, &limits);
1334#endif
1335#ifdef RLIMIT_RSS
1336 setrlimit (RLIMIT_RSS, &limits);
1337#endif
1338#ifdef RLIMIT_NPROC
1339 setrlimit (RLIMIT_NPROC, &limits);
1340#endif
1341#ifdef RLIMIT_MEMLOCK
1342 setrlimit (RLIMIT_MEMLOCK, &limits);
1343#endif
1344
1345#if !defined(SL_DEBUG)
1346 /* no core dumps
1347 */
1348 limits.rlim_cur = 0;
1349 limits.rlim_max = 0;
1350#ifdef RLIMIT_CORE
1351 setrlimit (RLIMIT_CORE, &limits);
1352#endif
1353#else
1354#ifdef RLIMIT_CORE
1355 setrlimit (RLIMIT_CORE, &limits);
1356#endif
1357#endif
1358
1359 limits.rlim_cur = 1024;
1360 limits.rlim_max = 1024;
1361
1362#if defined(RLIMIT_NOFILE)
1363 setrlimit (RLIMIT_NOFILE, &limits);
1364#elif defined(RLIMIT_OFILE)
1365 setrlimit (RLIMIT_OFILE, &limits);
1366#endif
1367
1368 SL_RET0(_("sh_unix_setlimits"));
1369}
1370
1371static void sh_unix_copyenv(void)
1372{
1373 char ** env0 = environ;
1374 char ** env1;
1375 int envlen = 0;
1376 size_t len;
1377
1378 SL_ENTER(_("sh_unix_copyenv"));
1379
1380 while (env0 != NULL && env0[envlen] != NULL) {
1381 /* printf("%2d: %s\n", envlen, env0[envlen]); */
1382 ++envlen;
1383 }
1384 ++envlen;
1385
1386 /* printf("-> %2d: slots allocated\n", envlen); */
1387 env1 = malloc (sizeof(char *) * envlen); /* only once */
1388 if (env1 == NULL)
1389 {
1390 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1391 SL_RET0(_("sh_unix_copyenv"));
1392 }
1393 env0 = environ;
1394 envlen = 0;
1395
1396 while (env0 != NULL && env0[envlen] != NULL) {
1397 len = strlen(env0[envlen]) + 1;
1398 env1[envlen] = malloc (len); /* only once */
1399 if (env1[envlen] == NULL)
1400 {
1401 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1402 SL_RET0(_("sh_unix_copyenv"));
1403 }
1404 sl_strlcpy(env1[envlen], env0[envlen], len);
1405 ++envlen;
1406 }
1407 env1[envlen] = NULL;
1408
1409 environ = env1;
1410 SL_RET0(_("sh_unix_copyenv"));
1411}
1412
1413/* delete all environment variables
1414 */
1415static void sh_unix_zeroenv(void)
1416{
1417 char * c;
1418 char ** env;
1419
1420 SL_ENTER(_("sh_unix_zeroenv"));
1421
1422 sh_unix_copyenv();
1423 env = environ;
1424
1425 while (env != NULL && *env != NULL) {
1426 c = strchr ((*env), '=');
1427#ifdef WITH_MYSQL
1428 /*
1429 * Skip the MYSQL_UNIX_PORT environment variable; MySQL may need it.
1430 */
1431 if (0 == sl_strncmp((*env), _("MYSQL_UNIX_PORT="), 16))
1432 {
1433 ++(env);
1434 continue;
1435 }
1436 if (0 == sl_strncmp((*env), _("MYSQL_TCP_PORT="), 15))
1437 {
1438 ++(env);
1439 continue;
1440 }
1441 if (0 == sl_strncmp((*env), _("MYSQL_HOME="), 11))
1442 {
1443 ++(env);
1444 continue;
1445 }
1446#endif
1447#ifdef WITH_ORACLE
1448 /*
1449 * Skip the ORACLE_HOME environment variable; Oracle may need it.
1450 */
1451 if (0 == sl_strncmp((*env), _("ORACLE_HOME="), 12))
1452 {
1453 ++(env);
1454 continue;
1455 }
1456#endif
1457 /*
1458 * Skip the TZ environment variable.
1459 */
1460 if (0 == sl_strncmp((*env), _("TZ="), 3))
1461 {
1462 ++(env);
1463 continue;
1464 }
1465 ++(env);
1466 if (c != NULL)
1467 {
1468 ++c;
1469 while ((*c) != '\0') {
1470 (*c) = '\0';
1471 ++c;
1472 }
1473 }
1474 }
1475
1476#ifdef HAVE_TZSET
1477 tzset();
1478#endif
1479
1480 SL_RET0(_("sh_unix_zeroenv"));
1481}
1482
1483
1484static void sh_unix_resettimer(void)
1485{
1486 struct itimerval this_timer;
1487
1488 SL_ENTER(_("sh_unix_resettimer"));
1489
1490 this_timer.it_value.tv_sec = 0;
1491 this_timer.it_value.tv_usec = 0;
1492
1493 this_timer.it_interval.tv_sec = 0;
1494 this_timer.it_interval.tv_usec = 0;
1495
1496 setitimer(ITIMER_REAL, &this_timer, NULL);
1497#if !defined(SH_PROFILE)
1498 setitimer(ITIMER_VIRTUAL, &this_timer, NULL);
1499 setitimer(ITIMER_PROF, &this_timer, NULL);
1500#endif
1501
1502 SL_RET0(_("sh_unix_resettimer"));
1503}
1504
1505static void sh_unix_resetsignals(void)
1506{
1507 int sig_num;
1508#ifdef NSIG
1509 int max_sig = NSIG;
1510#else
1511 int max_sig = 255;
1512#endif
1513 int test;
1514 int status;
1515 struct sigaction act;
1516#if !defined(SH_PROFILE)
1517 struct sigaction oldact;
1518#endif
1519
1520 sigset_t set_proc;
1521
1522 SL_ENTER(_("sh_unix_resetsignals"));
1523 /*
1524 * Reset the current signal mask (inherited from parent process).
1525 */
1526
1527 sigfillset(&set_proc);
1528
1529 do {
1530 errno = 0;
1531 test = SH_SETSIGMASK(SIG_UNBLOCK, &set_proc, NULL);
1532 } while (test < 0 && errno == EINTR);
1533
1534 /*
1535 * Reset signal handling.
1536 */
1537
1538 act.sa_handler = SIG_DFL; /* signal action */
1539 sigemptyset( &act.sa_mask ); /* set an empty mask */
1540 act.sa_flags = 0; /* init sa_flags */
1541
1542 for (sig_num = 1; sig_num <= max_sig; ++sig_num)
1543 {
1544#if !defined(SH_PROFILE)
1545 test = retry_sigaction(FIL__, __LINE__, sig_num, &act, &oldact);
1546#else
1547 test = 0;
1548#endif
1549 if ((test == -1) && (errno != EINVAL))
1550 {
1551 char errbuf[SH_ERRBUF_SIZE];
1552 status = errno;
1553 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_SIG,
1554 sh_error_message (status, errbuf, sizeof(errbuf)), sig_num);
1555 }
1556 }
1557
1558 SL_RET0(_("sh_unix_resetsignals"));
1559}
1560
1561/* Get the local hostname (FQDN)
1562 */
1563static char * sh_tolower (char * s)
1564{
1565 char * ret = s;
1566 if (s)
1567 {
1568 for (; *s; ++s)
1569 {
1570 *s = tolower((unsigned char) *s);
1571 }
1572 }
1573 return ret;
1574}
1575
1576
1577#include <sys/socket.h>
1578
1579/* Required for BSD
1580 */
1581#ifdef HAVE_NETINET_IN_H
1582#include <netinet/in.h>
1583#endif
1584
1585#include <arpa/inet.h>
1586
1587const char * sh_unix_h_name (struct hostent * host_entry)
1588{
1589 char ** p;
1590 if (strchr(host_entry->h_name, '.')) {
1591 return host_entry->h_name;
1592 } else {
1593 for (p = host_entry->h_aliases; *p; ++p) {
1594 if (strchr(*p, '.'))
1595 return *p;
1596 }
1597 }
1598 return host_entry->h_name;
1599}
1600
1601/* uname() on FreeBSD is broken, because the 'nodename' buf is too small
1602 * to hold a valid (leftmost) domain label.
1603 */
1604#if defined(HAVE_UNAME) && !defined(HOST_IS_FREEBSD)
1605#include <sys/utsname.h>
1606void sh_unix_localhost()
1607{
1608 struct utsname buf;
1609 int i;
1610 int ddot;
1611 int len;
1612 char * p;
1613 char hostname[256];
1614 char numeric[SH_IP_BUF];
1615 char * canonical;
1616
1617
1618 SL_ENTER(_("sh_unix_localhost"));
1619
1620 (void) uname (&buf);
1621 /* flawfinder: ignore */ /* ff bug, ff sees system() */
1622 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1623 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1624 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1625
1626 /* Workaround for cases where nodename could be
1627 * a truncated FQDN.
1628 */
1629 if (strlen(buf.nodename) == (sizeof(buf.nodename)-1))
1630 {
1631 p = strchr(buf.nodename, '.');
1632 if (NULL != p) {
1633 *p = '\0';
1634 sl_strlcpy(hostname, buf.nodename, 256);
1635 } else {
1636#ifdef HAVE_GETHOSTNAME
1637 if (0 != gethostname(hostname, 256))
1638 {
1639 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1640 _("nodename returned by uname may be truncated"),
1641 _("sh_unix_localhost"));
1642 sl_strlcpy (hostname, buf.nodename, 256);
1643 }
1644 else
1645 {
1646 hostname[255] = '\0';
1647 }
1648#else
1649 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
1650 _("nodename returned by uname may be truncated"),
1651 _("sh_unix_localhost"));
1652 sl_strlcpy(hostname, buf.nodename, 256);
1653#endif
1654 }
1655 }
1656 else
1657 {
1658 sl_strlcpy(hostname, buf.nodename, 256);
1659 }
1660
1661 canonical = sh_ipvx_canonical(hostname, numeric, sizeof(numeric));
1662
1663 if (canonical == NULL)
1664 {
1665 sl_strlcpy (sh.host.name, hostname, SH_PATHBUF);
1666 sh_tolower (sh.host.name);
1667 }
1668 else
1669 {
1670 sl_strlcpy (sh.host.name, canonical, SH_PATHBUF);
1671 SH_FREE(canonical);
1672 }
1673
1674 /* check whether it looks like a FQDN
1675 */
1676 len = sl_strlen(sh.host.name);
1677 ddot = 0;
1678 for (i = 0; i < len; ++i)
1679 if (sh.host.name[i] == '.') ++ddot;
1680
1681 if (ddot == 0)
1682 {
1683 dlog(1, FIL__, __LINE__,
1684 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nRather, it resolves this to %s.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1685 hostname, sh.host.name);
1686 sl_strlcpy (sh.host.name, numeric, SH_PATHBUF);
1687 SL_RET0(_("sh_unix_localhost"));
1688 }
1689
1690 if (sh_ipvx_is_numeric(sh.host.name))
1691 {
1692 dlog(1, FIL__, __LINE__,
1693 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nRather, it resolves this to %s.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1694 hostname, sh.host.name);
1695 }
1696
1697 SL_RET0(_("sh_unix_localhost"));
1698}
1699
1700#else
1701
1702/*
1703 * --FreeBSD code
1704 */
1705#if defined(HAVE_UNAME)
1706#include <sys/utsname.h>
1707#endif
1708void sh_unix_localhost()
1709{
1710#if defined(HAVE_UNAME)
1711 struct utsname buf;
1712#endif
1713 int i;
1714 int ddot;
1715 int len;
1716 char hostname[1024];
1717 char numeric[SH_IP_BUF];
1718 char * canonical;
1719
1720 SL_ENTER(_("sh_unix_localhost"));
1721
1722#if defined(HAVE_UNAME)
1723 (void) uname (&buf);
1724 /* flawfinder: ignore */ /* ff bug, ff sees system() */
1725 sl_strlcpy (sh.host.system, buf.sysname, SH_MINIBUF);
1726 sl_strlcpy (sh.host.release, buf.release, SH_MINIBUF);
1727 sl_strlcpy (sh.host.machine, buf.machine, SH_MINIBUF);
1728#endif
1729
1730 (void) gethostname (hostname, 1024);
1731 hostname[1023] = '\0';
1732
1733 canonical = sh_ipvx_canonical(hostname, numeric, sizeof(numeric));
1734
1735 if (canonical == NULL)
1736 {
1737 sl_strlcpy (sh.host.name, hostname, SH_PATHBUF);
1738 sh_tolower (sh.host.name);
1739 }
1740 else
1741 {
1742 sl_strlcpy (sh.host.name, canonical, SH_PATHBUF);
1743 SH_FREE(canonical);
1744 }
1745
1746 /* check whether it looks like a FQDN
1747 */
1748 len = sl_strlen(sh.host.name);
1749 ddot = 0;
1750 for (i = 0; i < len; ++i)
1751 if (sh.host.name[i] == '.') ++ddot;
1752 if (ddot == 0)
1753 {
1754 dlog(1, FIL__, __LINE__,
1755 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nRather, it resolves this to %s.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1756 hostname, sh.host.name);
1757 sl_strlcpy (sh.host.name, numeric, SH_PATHBUF);
1758 SL_RET0(_("sh_unix_localhost"));
1759 }
1760
1761 if (sh_ipvx_is_numeric(sh.host.name))
1762 {
1763 dlog(1, FIL__, __LINE__,
1764 _("According to uname, your nodename is %s, but your resolver\nlibrary cannot resolve this nodename to a FQDN.\nRather, it resolves this to %s.\nFor more information, see the entry about self-resolving under\n'Most frequently' in the FAQ that you will find in the docs/ subdirectory.\n"),
1765 hostname, sh.host.name);
1766 }
1767
1768 SL_RET0(_("sh_unix_localhost"));
1769}
1770#endif
1771
1772
1773void sh_unix_memlock()
1774{
1775 SL_ENTER(_("sh_unix_memlock"));
1776
1777 /* do this before dropping privileges
1778 */
1779#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
1780 if (skey->mlock_failed == SL_FALSE)
1781 {
1782 if ( (-1) == sh_unix_mlock( FIL__, __LINE__,
1783 (char *) skey, sizeof (sh_key_t)) )
1784 {
1785 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1786 skey->mlock_failed = SL_TRUE;
1787 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1788 }
1789 }
1790#else
1791 if (skey->mlock_failed == SL_FALSE)
1792 {
1793 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1794 skey->mlock_failed = SL_TRUE;
1795 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1796 }
1797#endif
1798
1799 SL_RET0(_("sh_unix_memlock"));
1800}
1801
1802#ifdef SH_WITH_SERVER
1803char * chroot_dir = NULL;
1804
1805int sh_unix_set_chroot(const char * str)
1806{
1807 size_t len;
1808 static int block = 0;
1809
1810 if (block == 1)
1811 return 0;
1812
1813 if (str && *str == '/')
1814 {
1815 len = strlen(str) + 1;
1816 chroot_dir = malloc(strlen(str) + 1); /* only once */
1817 if (!chroot_dir)
1818 {
1819 fprintf(stderr, _("%s: %d: Out of memory\n"), FIL__, __LINE__);
1820 return 1;
1821 }
1822 sl_strlcpy(chroot_dir, str, len);
1823 block = 1;
1824 return 0;
1825 }
1826 return 1;
1827}
1828
1829int sh_unix_chroot(void)
1830{
1831 int status;
1832
1833 if (chroot_dir != NULL)
1834 {
1835 status = retry_aud_chdir(FIL__, __LINE__, chroot_dir);
1836 if ( (-1) == status )
1837 {
1838 char errbuf[SH_ERRBUF_SIZE];
1839 status = errno;
1840 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
1841 sh_error_message (status, errbuf, sizeof(errbuf)), chroot_dir);
1842 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1843 }
1844 /* flawfinder: ignore */
1845 return (chroot(chroot_dir));
1846 }
1847 return 0;
1848}
1849/* #ifdef SH_WITH_SERVER */
1850#else
1851int sh_unix_chroot(void) { return 0; }
1852#endif
1853
1854/* daemon mode
1855 */
1856static int block_setdeamon = 0;
1857
1858int sh_unix_setdeamon(const char * dummy)
1859{
1860 int res = 0;
1861
1862 SL_ENTER(_("sh_unix_setdeamon"));
1863
1864 if (block_setdeamon != 0)
1865 SL_RETURN((0),_("sh_unix_setdeamon"));
1866
1867 if (dummy == NULL)
1868 sh.flag.isdaemon = ON;
1869 else
1870 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1871
1872 if (sh.flag.opts == S_TRUE)
1873 block_setdeamon = 1;
1874
1875 SL_RETURN(res, _("sh_unix_setdeamon"));
1876}
1877#if defined(HAVE_LIBPRELUDE)
1878#include "sh_prelude.h"
1879#endif
1880
1881int sh_unix_setnodeamon(const char * dummy)
1882{
1883 int res = 0;
1884
1885 SL_ENTER(_("sh_unix_setnodeamon"));
1886
1887 if (block_setdeamon != 0)
1888 SL_RETURN((0),_("sh_unix_setmodeamon"));
1889
1890 if (dummy == NULL)
1891 sh.flag.isdaemon = OFF;
1892 else
1893 res = sh_util_flagval (dummy, &sh.flag.isdaemon);
1894
1895 if (sh.flag.opts == S_TRUE)
1896 block_setdeamon = 1;
1897
1898 SL_RETURN(res, _("sh_unix_setnodeamon"));
1899}
1900
1901int sh_unix_init(int goDaemon)
1902{
1903 int status;
1904 uid_t uid;
1905 pid_t oldpid = getpid();
1906#if defined(SH_WITH_SERVER)
1907 extern int sh_socket_open_int (void);
1908#endif
1909 char errbuf[SH_ERRBUF_SIZE];
1910
1911 SL_ENTER(_("sh_unix_init"));
1912
1913 /* fork twice, exit the parent process
1914 */
1915 if (goDaemon == 1) {
1916
1917 switch (aud_fork(FIL__, __LINE__)) {
1918 case 0: break; /* child process continues */
1919 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1920 default: aud__exit(FIL__, __LINE__, 0); /* parent process exits */
1921 }
1922
1923 /* Child processes do not inherit page locks across a fork.
1924 * Error in next fork would return in this (?) thread of execution.
1925 */
1926 sh_unix_memlock();
1927
1928 setsid(); /* should not fail */
1929 sh.pid = (UINT64) getpid();
1930
1931 switch (aud_fork(FIL__, __LINE__)) {
1932 case 0: break; /* child process continues */
1933 case -1: SL_RETURN((-1),_("sh_unix_init")); /* error */
1934 default: aud__exit(FIL__, __LINE__, 0); /* parent process exits */
1935 }
1936
1937 /* Child processes do not inherit page locks across a fork.
1938 */
1939 sh_unix_memlock();
1940 sh.pid = (UINT64) getpid();
1941
1942 } else {
1943 setsid(); /* should not fail */
1944 }
1945
1946 /* set working directory
1947 */
1948#ifdef SH_PROFILE
1949 status = 0;
1950#else
1951 status = retry_aud_chdir(FIL__, __LINE__, "/");
1952#endif
1953 if ( (-1) == status )
1954 {
1955 status = errno;
1956 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_W_CHDIR,
1957 sh_error_message (status, errbuf, sizeof(errbuf)), "/");
1958 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
1959 }
1960
1961 /* reset timers
1962 */
1963 sh_unix_resettimer();
1964
1965 /* signal handlers
1966 */
1967 sh_unix_resetsignals();
1968#if defined(SCREW_IT_UP)
1969 sh_sigtrap_prepare();
1970#endif
1971 sh_unix_siginstall (goDaemon);
1972
1973 /* set file creation mask
1974 */
1975 (void) umask (0); /* should not fail */
1976
1977 /* set resource limits to maximum, and
1978 * core dump size to zero
1979 */
1980 sh_unix_setlimits();
1981
1982 /* zero out the environment (like PATH='\0')
1983 */
1984 sh_unix_zeroenv();
1985
1986 if (goDaemon == 1)
1987 {
1988 /* Close first tree file descriptors
1989 */
1990 sl_close_fd (FIL__, __LINE__, 0); /* if running as daemon */
1991 sl_close_fd (FIL__, __LINE__, 1); /* if running as daemon */
1992 sl_close_fd (FIL__, __LINE__, 2); /* if running as daemon */
1993
1994 /* Enable full error logging
1995 */
1996 sh_error_only_stderr (S_FALSE);
1997
1998 /* open first three streams to /dev/null
1999 */
2000 status = aud_open(FIL__, __LINE__, SL_NOPRIV, _("/dev/null"), O_RDWR, 0);
2001 if (status < 0)
2002 {
2003 status = errno;
2004 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2005 sh_error_message(status, errbuf, sizeof(errbuf)), _("open"));
2006 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2007 }
2008
2009 status = retry_aud_dup(FIL__, __LINE__, 0);
2010 if (status >= 0)
2011 retry_aud_dup(FIL__, __LINE__, 0);
2012
2013 if (status < 0)
2014 {
2015 status = errno;
2016 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2017 sh_error_message(status, errbuf, sizeof(errbuf)), _("dup"));
2018 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2019 }
2020
2021 sh_error_enable_unsafe (S_TRUE);
2022#if defined(HAVE_LIBPRELUDE)
2023 sh_prelude_reset ();
2024#endif
2025
2026 /* --- wait until parent has exited ---
2027 */
2028 while (1 == 1)
2029 {
2030 errno = 0;
2031 if (0 > aud_kill (FIL__, __LINE__, oldpid, 0) && errno == ESRCH)
2032 {
2033 break;
2034 }
2035 retry_msleep(0, 1);
2036 }
2037
2038 /* write PID file
2039 */
2040 status = sh_unix_write_pid_file();
2041 if (status < 0)
2042 {
2043 sl_get_euid(&uid);
2044 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_PIDFILE,
2045 (long) uid, sh.srvlog.alt);
2046 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2047 }
2048#if defined(SH_WITH_SERVER)
2049 sh_socket_open_int ();
2050#endif
2051 }
2052 else
2053 {
2054 sh_error_enable_unsafe (S_TRUE);
2055#if defined(HAVE_LIBPRELUDE)
2056 sh_prelude_reset ();
2057#endif
2058#if defined(SH_WITH_SERVER)
2059 sh_socket_open_int ();
2060#endif
2061 }
2062
2063 /* chroot (this is a no-op if no chroot dir is specified
2064 */
2065 status = sh_unix_chroot();
2066 if (status < 0)
2067 {
2068 status = errno;
2069 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
2070 sh_error_message(status, errbuf, sizeof(errbuf)), _("chroot"));
2071 aud_exit(FIL__, __LINE__, EXIT_FAILURE);
2072 }
2073
2074 /* drop capabilities
2075 */
2076 sl_drop_cap();
2077
2078 SL_RETURN((0),_("sh_unix_init"));
2079}
2080
2081/* --- run a command, securely --- */
2082
2083int sh_unix_run_command (const char * str)
2084{
2085 pid_t pid;
2086 char * arg[4];
2087 char * env[5];
2088 char * path = sh_util_strdup(_("/bin/sh"));
2089
2090 int status = -1;
2091
2092 arg[0] = sh_util_strdup(_("/bin/sh"));
2093 arg[1] = sh_util_strdup(_("-c"));
2094 arg[2] = sh_util_strdup(str);
2095 arg[3] = NULL;
2096
2097 env[0] = sh_util_strdup(_("PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/ucb"));
2098 env[1] = sh_util_strdup(_("SHELL=/bin/sh"));
2099 env[2] = sh_util_strdup(_("IFS= \t\n"));
2100 if (getenv("TZ")) { /* flawfinder: ignore */
2101 char * tz = sh_util_strdup(getenv("TZ")); /* flawfinder: ignore */
2102 size_t tzlen = strlen(tz);
2103 if (SL_TRUE == sl_ok_adds (4, tzlen)) {
2104 env[3] = SH_ALLOC(4+tzlen);
2105 sl_strlcpy(env[3], "TZ=", 4);
2106 sl_strlcat(env[3], tz , 4+tzlen);
2107 } else {
2108 env[3] = NULL;
2109 }
2110 } else {
2111 env[3] = NULL;
2112 }
2113 env[4] = NULL;
2114
2115 pid = fork();
2116
2117 if (pid == (pid_t)(-1))
2118 {
2119 return -1;
2120 }
2121
2122 else if (pid == 0) /* child */
2123 {
2124 memset(skey, 0, sizeof(sh_key_t));
2125 (void) umask(S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
2126 sh_unix_closeall (3, -1, SL_TRUE); /* in child process */
2127 execve(path, arg, env);
2128 _exit(EXIT_FAILURE);
2129 }
2130
2131 else /* parent */
2132 {
2133 int r;
2134
2135 while((r = waitpid(pid, &status, WUNTRACED)) != pid && r != -1) ;
2136
2137#if !defined(USE_UNO)
2138 if (r == -1 || !WIFEXITED(status))
2139 {
2140 status = -1;
2141 }
2142 else
2143 {
2144 status = WEXITSTATUS(status);
2145 }
2146#endif
2147 }
2148
2149 return status;
2150}
2151
2152/********************************************************
2153 *
2154 * TIME
2155 *
2156 ********************************************************/
2157
2158/* Figure out the time offset of the current timezone
2159 * in a portable way.
2160 */
2161char * t_zone(const time_t * xx)
2162{
2163 struct tm aa;
2164 struct tm bb;
2165 struct tm * cc;
2166 int sign = 0;
2167 int diff = 0;
2168 int hh, mm;
2169 static char tz[64];
2170
2171 SL_ENTER(_("t_zone"));
2172
2173#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2174 cc = gmtime_r (xx, &aa);
2175#else
2176 cc = gmtime (xx);
2177 memcpy (&aa, cc, sizeof(struct tm));
2178#endif
2179
2180#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2181 cc = localtime_r (xx, &bb);
2182#else
2183 cc = localtime (xx);
2184 memcpy (&bb, cc, sizeof(struct tm));
2185#endif
2186
2187 /* Check for datum wrap-around.
2188 */
2189 if (aa.tm_year < bb.tm_year)
2190 sign = (-1);
2191 else if (aa.tm_mon < bb.tm_mon)
2192 sign = (-1);
2193 else if (aa.tm_mday < bb.tm_mday)
2194 sign = (-1);
2195 else if (bb.tm_year < aa.tm_year)
2196 sign = ( 1);
2197 else if (bb.tm_mon < aa.tm_mon)
2198 sign = ( 1);
2199 else if (bb.tm_mday < aa.tm_mday)
2200 sign = ( 1);
2201
2202 diff = aa.tm_hour * 60 + aa.tm_min;
2203 diff = (bb.tm_hour * 60 + bb.tm_min) - diff;
2204 diff = diff - (sign * 24 * 60); /* datum wrap-around correction */
2205 hh = diff / 60;
2206 mm = diff - (hh * 60);
2207 sprintf (tz, _("%+03d%02d"), hh, mm); /* known to fit */
2208
2209 SL_RETURN(tz, _("t_zone"));
2210}
2211
2212unsigned long sh_unix_longtime ()
2213{
2214 return ((unsigned long)time(NULL));
2215}
2216
2217#ifdef HAVE_GETTIMEOFDAY
2218unsigned long sh_unix_notime ()
2219{
2220 struct timeval tv;
2221
2222 gettimeofday (&tv, NULL);
2223
2224 return ((unsigned long)(tv.tv_sec + tv.tv_usec * 10835 + getpid() + getppid()));
2225
2226}
2227#endif
2228
2229static int count_dev_time = 0;
2230
2231void reset_count_dev_time(void)
2232{
2233 count_dev_time = 0;
2234 return;
2235}
2236
2237int sh_unix_settimeserver (const char * address)
2238{
2239
2240 SL_ENTER(_("sh_unix_settimeserver"));
2241
2242 if (address != NULL && count_dev_time < 2
2243 && sl_strlen(address) < SH_PATHBUF)
2244 {
2245 if (count_dev_time == 0)
2246 sl_strlcpy (sh.srvtime.name, address, SH_PATHBUF);
2247 else
2248 sl_strlcpy (sh.srvtime.alt, address, SH_PATHBUF);
2249
2250 ++count_dev_time;
2251 SL_RETURN((0), _("sh_unix_settimeserver"));
2252 }
2253 SL_RETURN((-1), _("sh_unix_settimeserver"));
2254}
2255
2256
2257#ifdef HAVE_NTIME
2258#define UNIXEPOCH 2208988800UL /* difference between Unix time and net time
2259 * The UNIX EPOCH starts in 1970.
2260 */
2261#include <sys/socket.h>
2262#include <netinet/in.h>
2263#include <arpa/inet.h>
2264#include <netdb.h>
2265#include <ctype.h>
2266#endif
2267
2268/* Timeserver service. */
2269/* define is missing on HP-UX 10.20 */
2270#ifndef IPPORT_TIMESERVER
2271#define IPPORT_TIMESERVER 37
2272#endif
2273
2274char * sh_unix_time (time_t thetime, char * buffer, size_t len)
2275{
2276
2277 int status;
2278 char AsciiTime[81]; /* local time */
2279 time_t time_now;
2280 struct tm * time_ptr;
2281#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2282 struct tm time_tm;
2283#endif
2284#ifdef SH_USE_XML
2285 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2286#else
2287 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2288#endif
2289
2290#ifdef HAVE_NTIME
2291 int fd; /* network file descriptor */
2292 u_char net_time[4]; /* remote time in network format */
2293 static int failerr = 0; /* no net time */
2294 int fail = 0; /* no net time */
2295 int errflag;
2296 char errmsg[256];
2297 char error_call[SH_MINIBUF];
2298 int error_num;
2299#endif
2300
2301 SL_ENTER(_("sh_unix_time"));
2302
2303#ifdef HAVE_NTIME
2304 if (thetime == 0)
2305 {
2306 if (sh.srvtime.name[0] == '\0')
2307 {
2308 fail = 1;
2309 (void) time (&time_now);
2310 }
2311 else /* have a timeserver address */
2312 {
2313 fd = connect_port_2 (sh.srvtime.name, sh.srvtime.alt,
2314 IPPORT_TIMESERVER,
2315 error_call, &error_num, errmsg, sizeof(errmsg));
2316 if (fd >= 0)
2317 {
2318 if (4 != read_port (fd, (char *) net_time, 4, &errflag, 2))
2319 {
2320 fail = 1;
2321 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2322 MSG_E_NLOST,
2323 _("time"), sh.srvtime.name);
2324 }
2325 sl_close_fd(FIL__, __LINE__, fd);
2326 }
2327 else
2328 {
2329 sh_error_handle ((-1), FIL__, __LINE__, error_num,
2330 MSG_E_NET, errmsg, error_call,
2331 _("time"), sh.srvtime.name);
2332 fail = 1;
2333 }
2334
2335 if (fail == 0)
2336 {
2337 unsigned long ltmp;
2338 UINT32 ttmp;
2339 memcpy(&ttmp, net_time, sizeof(UINT32)); ltmp = ttmp;
2340 time_now = ntohl(ltmp) - UNIXEPOCH;
2341 /* fprintf(stderr, "TIME IS %ld\n", time_now); */
2342 if (failerr == 1) {
2343 failerr = 0;
2344 sh_error_handle ((-1), FIL__, __LINE__, 0,
2345 MSG_E_NEST,
2346 _("time"), sh.srvtime.name);
2347 }
2348 }
2349 else
2350 {
2351 (void) time (&time_now);
2352 if (failerr == 0)
2353 {
2354 failerr = 1;
2355 sh_error_handle ((-1), FIL__, __LINE__, errflag,
2356 MSG_SRV_FAIL,
2357 _("time"), sh.srvtime.name);
2358 }
2359 }
2360 }
2361 }
2362 else
2363 {
2364 time_now = thetime;
2365 }
2366
2367 /* #ifdef HAVE_NTIME */
2368#else
2369
2370 if (thetime == 0)
2371 {
2372 (void) time (&time_now);
2373 }
2374 else
2375 {
2376 time_now = thetime;
2377 }
2378
2379 /* #ifdef HAVE_NTIME */
2380#endif
2381
2382 if (time_now == (-1) )
2383 {
2384 sl_strlcpy(buffer, _(deftime), len);
2385 SL_RETURN(buffer, _("sh_unix_time"));
2386 }
2387 else
2388 {
2389#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2390 time_ptr = localtime_r (&time_now, &time_tm);
2391#else
2392 time_ptr = localtime (&time_now);
2393#endif
2394 }
2395 if (time_ptr != NULL)
2396 {
2397 status = strftime (AsciiTime, sizeof(AsciiTime),
2398#ifdef SH_USE_XML
2399 _("%Y-%m-%dT%H:%M:%S%%s"),
2400#else
2401 _("[%Y-%m-%dT%H:%M:%S%%s]"),
2402#endif
2403 time_ptr);
2404
2405 sl_snprintf(buffer, len, AsciiTime, t_zone(&time_now));
2406
2407 if ( (status == 0) || (status == sizeof(AsciiTime)) )
2408 {
2409 sl_strlcpy(buffer, _(deftime), len);
2410 SL_RETURN( buffer, _("sh_unix_time"));
2411 }
2412 else
2413 {
2414 SL_RETURN(buffer, _("sh_unix_time"));
2415 }
2416 }
2417
2418 /* last resort
2419 */
2420 sl_strlcpy(buffer, _(deftime), len);
2421 SL_RETURN( buffer, _("sh_unix_time"));
2422}
2423
2424static int sh_unix_use_localtime = S_FALSE;
2425
2426/* whether to use localtime for file timesatams in logs
2427 */
2428int sh_unix_uselocaltime (const char * c)
2429{
2430 int i;
2431 SL_ENTER(_("sh_unix_uselocaltime"));
2432 i = sh_util_flagval(c, &(sh_unix_use_localtime));
2433
2434 SL_RETURN(i, _("sh_unix_uselocaltime"));
2435}
2436
2437char * sh_unix_gmttime (time_t thetime, char * buffer, size_t len)
2438{
2439
2440 int status;
2441
2442 struct tm * time_ptr;
2443#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS)
2444 struct tm time_tm;
2445#endif
2446 char AsciiTime[81]; /* GMT time */
2447#ifdef SH_USE_XML
2448 static char deftime[] = N_("0000-00-00T00:00:00"); /* default time */
2449#else
2450 static char deftime[] = N_("[0000-00-00T00:00:00]"); /* default time */
2451#endif
2452
2453 SL_ENTER(_("sh_unix_gmttime"));
2454
2455 if (sh_unix_use_localtime == S_FALSE)
2456 {
2457#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GMTIME_R)
2458 time_ptr = gmtime_r (&thetime, &time_tm);
2459#else
2460 time_ptr = gmtime (&thetime);
2461#endif
2462 }
2463 else
2464 {
2465#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
2466 time_ptr = localtime_r (&thetime, &time_tm);
2467#else
2468 time_ptr = localtime (&thetime);
2469#endif
2470 }
2471 if (time_ptr != NULL)
2472 {
2473 status = strftime (AsciiTime, 80,
2474#ifdef SH_USE_XML
2475 _("%Y-%m-%dT%H:%M:%S"),
2476#else
2477 _("[%Y-%m-%dT%H:%M:%S]"),
2478#endif
2479 time_ptr);
2480
2481 if ( (status == 0) || (status == 80) )
2482 sl_strlcpy(buffer, _(deftime), len);
2483 else
2484 sl_strlcpy(buffer, AsciiTime, len);
2485 SL_RETURN( buffer, _("sh_unix_gmttime"));
2486 }
2487
2488 /* last resort
2489 */
2490 sl_strlcpy(buffer, _(deftime), len);
2491 SL_RETURN( buffer, _("sh_unix_gmttime"));
2492}
2493
2494
2495char * sh_unix_getUIDdir (int level, uid_t uid, char * out, size_t len)
2496{
2497 struct passwd * tempres;
2498 int status = 0;
2499
2500#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2501 struct passwd pwd;
2502 char * buffer;
2503#endif
2504 char errbuf[SH_ERRBUF_SIZE];
2505
2506 SL_ENTER(_("sh_unix_getUIDdir"));
2507
2508#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2509 buffer = SH_ALLOC(SH_PWBUF_SIZE);
2510 sh_getpwuid_r(uid, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
2511#else
2512 errno = 0;
2513 tempres = sh_getpwuid(uid);
2514 status = errno;
2515#endif
2516
2517 if (tempres == NULL) {
2518 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2519 sh_error_message(status, errbuf, sizeof(errbuf)),
2520 _("getpwuid"), (long) uid, _("completely missing"));
2521#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2522 SH_FREE(buffer);
2523#endif
2524 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2525 }
2526
2527 if (tempres->pw_dir != NULL) {
2528 sl_strlcpy(out, tempres->pw_dir, len);
2529#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2530 SH_FREE(buffer);
2531#endif
2532 SL_RETURN( out, _("sh_unix_getUIDdir"));
2533 } else {
2534 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2535 sh_error_message(status, errbuf, sizeof(errbuf)),
2536 _("getpwuid"), (long) uid, _("pw_dir"));
2537#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2538 SH_FREE(buffer);
2539#endif
2540 SL_RETURN( NULL, _("sh_unix_getUIDdir"));
2541 }
2542}
2543
2544/* ------------------- Caching ----------------*/
2545#include "zAVLTree.h"
2546
2547#define CACHE_GID 0
2548#define CACHE_UID 1
2549
2550struct user_id {
2551 char * name;
2552 uid_t id;
2553 struct user_id * next;
2554};
2555
2556static struct user_id * uid_list = NULL;
2557static struct user_id * gid_list = NULL;
2558
2559SH_MUTEX_STATIC(mutex_cache, PTHREAD_MUTEX_INITIALIZER);
2560
2561static void sh_userid_free(struct user_id * item)
2562{
2563 while (item)
2564 {
2565 struct user_id * user = item;
2566 item = item->next;
2567
2568 SH_FREE(user->name);
2569 SH_FREE(user);
2570 }
2571 return;
2572}
2573
2574void sh_userid_destroy ()
2575{
2576 struct user_id * tmp_uid;
2577 struct user_id * tmp_gid;
2578
2579 SH_MUTEX_LOCK_UNSAFE(mutex_cache);
2580 tmp_gid = gid_list;
2581 gid_list = NULL;
2582 tmp_uid = uid_list;
2583 uid_list = NULL;
2584 SH_MUTEX_UNLOCK_UNSAFE(mutex_cache);
2585
2586 sh_userid_free(tmp_uid);
2587 sh_userid_free(tmp_gid);
2588 return;
2589}
2590
2591static void sh_userid_additem(struct user_id * list, struct user_id * item)
2592{
2593 while (list && list->next)
2594 list = list->next;
2595 list->next = item;
2596 return;
2597}
2598
2599static void sh_userid_add(uid_t id, char * username, int which)
2600{
2601 size_t len;
2602 struct user_id * user = SH_ALLOC(sizeof(struct user_id));
2603
2604 if (username)
2605 len = strlen(username) + 1;
2606 else
2607 len = 1;
2608
2609 user->name = SH_ALLOC(len);
2610 user->id = id;
2611 if (username)
2612 sl_strlcpy(user->name, username, len);
2613 else
2614 user->name[0] = '\0';
2615 user->next = NULL;
2616
2617 SH_MUTEX_LOCK(mutex_cache);
2618 if (which == CACHE_UID)
2619 {
2620 if (!uid_list)
2621 uid_list = user;
2622 else
2623 sh_userid_additem(uid_list, user);
2624 }
2625 else
2626 {
2627 if (!gid_list)
2628 gid_list = user;
2629 else
2630 sh_userid_additem(gid_list, user);
2631 }
2632 SH_MUTEX_UNLOCK(mutex_cache);
2633
2634 return;
2635}
2636
2637static char * sh_userid_search(struct user_id * list, uid_t id)
2638{
2639 while (list)
2640 {
2641 if (list->id == id)
2642 return list->name;
2643 list = list->next;
2644 }
2645 return NULL;
2646}
2647
2648static char * sh_userid_get (uid_t id, int which, char * out, size_t len)
2649{
2650 char * user = NULL;
2651
2652 SH_MUTEX_LOCK_UNSAFE(mutex_cache);
2653 if (which == CACHE_UID)
2654 user = sh_userid_search(uid_list, id);
2655 else
2656 user = sh_userid_search(gid_list, id);
2657 if (user)
2658 {
2659 sl_strlcpy(out, user, len);
2660 user = out;
2661 }
2662 SH_MUTEX_UNLOCK_UNSAFE(mutex_cache);
2663
2664 return user;
2665}
2666
2667/* --------- end caching code --------- */
2668
2669char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len)
2670{
2671 struct passwd * tempres;
2672#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2673 struct passwd pwd;
2674 char * buffer;
2675#endif
2676 int status = 0;
2677 char errbuf[SH_ERRBUF_SIZE];
2678 char * tmp;
2679
2680 SL_ENTER(_("sh_unix_getUIDname"));
2681
2682 tmp = sh_userid_get(uid, CACHE_UID, out, len);
2683
2684 if (tmp)
2685 {
2686 if (tmp[0] != '\0')
2687 {
2688 SL_RETURN( out, _("sh_unix_getUIDname"));
2689 }
2690 else
2691 {
2692 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2693 }
2694 }
2695
2696#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
2697 buffer = SH_ALLOC(SH_PWBUF_SIZE);
2698 sh_getpwuid_r(uid, &pwd, buffer, SH_PWBUF_SIZE, &tempres);
2699#else
2700 errno = 0;
2701 tempres = sh_getpwuid(uid);
2702 status = errno;
2703#endif
2704
2705 if (tempres == NULL)
2706 {
2707 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2708 sh_error_message(status, errbuf, sizeof(errbuf)),
2709 _("getpwuid"), (long) uid, _("completely missing"));
2710#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2711 SH_FREE(buffer);
2712#endif
2713 sh_userid_add(uid, NULL, CACHE_UID);
2714 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2715 }
2716
2717
2718 if (tempres->pw_name != NULL)
2719 {
2720
2721 sl_strlcpy(out, tempres->pw_name, len);
2722 sh_userid_add(uid, out, CACHE_UID);
2723
2724#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2725 SH_FREE(buffer);
2726#endif
2727
2728 SL_RETURN( out, _("sh_unix_getUIDname"));
2729 }
2730 else
2731 {
2732 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_PWNULL,
2733 sh_error_message(status, errbuf, sizeof(errbuf)),
2734 _("getpwuid"), (long) uid, _("pw_user"));
2735#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2736 SH_FREE(buffer);
2737#endif
2738 SL_RETURN( NULL, _("sh_unix_getUIDname"));
2739 }
2740 /* notreached */
2741}
2742
2743char * sh_unix_getGIDname (int level, gid_t gid, char * out, size_t len)
2744{
2745 struct group * tempres;
2746 int status = 0;
2747
2748#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2749 struct group grp;
2750 char * buffer;
2751#endif
2752 char errbuf[SH_ERRBUF_SIZE];
2753 char * tmp;
2754
2755 SL_ENTER(_("sh_unix_getGIDname"));
2756
2757 tmp = sh_userid_get((uid_t)gid, CACHE_GID, out, len);
2758
2759 if (tmp)
2760 {
2761 if (tmp[0] != '\0')
2762 {
2763 SL_RETURN( out, _("sh_unix_getGIDname"));
2764 }
2765 else
2766 {
2767 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2768 }
2769 }
2770
2771#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2772 buffer = SH_ALLOC(SH_GRBUF_SIZE);
2773 status = sh_getgrgid_r(gid, &grp, buffer, SH_GRBUF_SIZE, &tempres);
2774#else
2775 errno = 0;
2776 tempres = sh_getgrgid(gid);
2777 status = errno;
2778#endif
2779
2780 if (tempres == NULL)
2781 {
2782 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
2783 sh_error_message(status, errbuf, sizeof(errbuf)),
2784 _("getgrgid"), (long) gid, _("completely missing"));
2785
2786#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2787 SH_FREE(buffer);
2788#endif
2789
2790 sh_userid_add(gid, NULL, CACHE_GID);
2791 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2792 }
2793
2794 if (tempres->gr_name != NULL)
2795 {
2796
2797 sl_strlcpy(out, tempres->gr_name, len);
2798 sh_userid_add((uid_t)gid, out, CACHE_GID);
2799
2800#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2801 SH_FREE(buffer);
2802#endif
2803
2804 SL_RETURN( out, _("sh_unix_getGIDname"));
2805 }
2806 else
2807 {
2808 sh_error_handle (level, FIL__, __LINE__, EINVAL, MSG_E_GRNULL,
2809 sh_error_message(status, errbuf, sizeof(errbuf)),
2810 _("getgrgid"), (long) gid, _("gr_name"));
2811
2812#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
2813 SH_FREE(buffer);
2814#endif
2815
2816 SL_RETURN( NULL, _("sh_unix_getGIDname"));
2817 }
2818 /* notreached */
2819}
2820
2821int sh_unix_getUser ()
2822{
2823 char * p;
2824 uid_t seuid, sruid;
2825 char user[USER_MAX];
2826 char dir[SH_PATHBUF];
2827
2828 SL_ENTER(_("sh_unix_getUser"));
2829
2830 seuid = geteuid();
2831
2832 sh.effective.uid = seuid;
2833
2834 p = sh_unix_getUIDdir (SH_ERR_ERR, seuid, dir, sizeof(dir));
2835
2836 if (p == NULL)
2837 SL_RETURN((-1), _("sh_unix_getUser"));
2838 else
2839 {
2840 if (sl_strlen(p) >= SH_PATHBUF) {
2841 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2842 _("getpwuid"), (long) seuid, _("pw_home"));
2843 SL_RETURN((-1), _("sh_unix_getUser"));
2844 } else {
2845 sl_strlcpy ( sh.effective.home, p, SH_PATHBUF);
2846 }
2847 }
2848
2849 sruid = getuid();
2850
2851 sh.real.uid = sruid;
2852
2853 p = sh_unix_getUIDname (SH_ERR_ERR, sruid, user, sizeof(user));
2854 if (p == NULL)
2855 SL_RETURN((-1), _("sh_unix_getUser"));
2856 else
2857 {
2858 if (sl_strlen(p) >= USER_MAX) {
2859 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2860 _("getpwuid"), (long) sruid, _("pw_user"));
2861 SL_RETURN((-1), _("sh_unix_getUser"));
2862 } else {
2863 sl_strlcpy ( sh.real.user, p, USER_MAX);
2864 }
2865 }
2866
2867 p = sh_unix_getUIDdir (SH_ERR_ERR, sruid, dir, sizeof(dir));
2868
2869 if (p == NULL)
2870 SL_RETURN((-1), _("sh_unix_getUser"));
2871 else
2872 {
2873 if (sl_strlen(p) >= SH_PATHBUF) {
2874 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, EINVAL, MSG_E_PWLONG,
2875 _("getpwuid"), (long) sruid, _("pw_home"));
2876 SL_RETURN((-1), _("sh_unix_getUser"));
2877 } else {
2878 sl_strlcpy ( sh.real.home, p, SH_PATHBUF);
2879 }
2880 }
2881
2882 SL_RETURN((0), _("sh_unix_getUser"));
2883
2884 /* notreached */
2885}
2886
2887
2888int sh_unix_getline (SL_TICKET fd, char * line, int sizeofline)
2889{
2890 register int count;
2891 register int n = 0;
2892 char c;
2893
2894 SL_ENTER(_("sh_unix_getline"));
2895
2896 if (sizeofline < 2) {
2897 line[0] = '\0';
2898 SL_RETURN((0), _("sh_unix_getline"));
2899 }
2900
2901 --sizeofline;
2902
2903 while (n < sizeofline) {
2904
2905 count = sl_read (fd, &c, 1);
2906
2907 /* end of file
2908 */
2909 if (count < 1) {
2910 line[n] = '\0';
2911 n = -1;
2912 break;
2913 }
2914
2915 if (/* c != '\0' && */ c != '\n') {
2916 line[n] = c;
2917 ++n;
2918 } else if (c == '\n') {
2919 if (n > 0) {
2920 line[n] = '\0';
2921 break;
2922 } else {
2923 line[n] = '\n'; /* get newline only if only char on line */
2924 ++n;
2925 line[n] = '\0';
2926 break;
2927 }
2928 } else {
2929 line[n] = '\0';
2930 break;
2931 }
2932
2933 }
2934
2935
2936 line[sizeofline] = '\0'; /* make sure line is terminated */
2937 SL_RETURN((n), _("sh_unix_getline"));
2938}
2939
2940
2941#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
2942
2943/**************************************************************
2944 *
2945 * --- FILE INFO ---
2946 *
2947 **************************************************************/
2948
2949#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
2950
2951#if defined(__linux__)
2952
2953/* --- Determine ext2fs file attributes. ---
2954 */
2955#include <sys/ioctl.h>
2956#if defined(HAVE_EXT2FS_EXT2_FS_H)
2957#include <ext2fs/ext2_fs.h>
2958#else
2959#include <linux/ext2_fs.h>
2960#endif
2961
2962/* __linux__ includes */
2963#endif
2964
2965static
2966int sh_unix_getinfo_attr (char * name,
2967 unsigned long * flags,
2968 char * c_attr,
2969 int fd, struct stat * buf)
2970{
2971
2972/* TAKEN FROM:
2973 *
2974 * lsattr.c - List file attributes on an ext2 file system
2975 *
2976 * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
2977 * Laboratoire MASI, Institut Blaise Pascal
2978 * Universite Pierre et Marie Curie (Paris VI)
2979 *
2980 * This file can be redistributed under the terms of the GNU General
2981 * Public License
2982 */
2983
2984#ifdef HAVE_STAT_FLAGS
2985
2986 SL_ENTER(_("sh_unix_getinfo_attr"));
2987
2988 *flags = 0;
2989
2990 /* cast to void to avoid compiler warning about unused parameters */
2991 (void) fd;
2992 (void) name;
2993
2994#ifdef UF_NODUMP
2995 if (buf->st_flags & UF_NODUMP) {
2996 *flags |= UF_NODUMP;
2997 c_attr[0] = 'd';
2998 }
2999#endif
3000#ifdef UF_IMMUTABLE
3001 if (buf->st_flags & UF_IMMUTABLE) {
3002 *flags |= UF_IMMUTABLE;
3003 c_attr[1] = 'i';
3004 }
3005#endif
3006#ifdef UF_APPEND
3007 if (buf->st_flags & UF_APPEND) {
3008 *flags |= UF_APPEND;
3009 c_attr[2] = 'a';
3010 }
3011#endif
3012#ifdef UF_NOUNLINK
3013 if (buf->st_flags & UF_NOUNLINK) {
3014 *flags |= UF_NOUNLINK;
3015 c_attr[3] = 'u';
3016 }
3017#endif
3018#ifdef UF_OPAQUE
3019 if (buf->st_flags & UF_OPAQUE) {
3020 *flags |= UF_OPAQUE;
3021 c_attr[4] = 'o';
3022 }
3023#endif
3024#ifdef SF_ARCHIVED
3025 if (buf->st_flags & SF_ARCHIVED) {
3026 *flags |= SF_ARCHIVED;
3027 c_attr[5] = 'R';
3028 }
3029
3030#endif
3031#ifdef SF_IMMUTABLE
3032 if (buf->st_flags & SF_IMMUTABLE) {
3033 *flags |= SF_IMMUTABLE;
3034 c_attr[6] = 'I';
3035 }
3036#endif
3037#ifdef SF_APPEND
3038 if (buf->st_flags & SF_APPEND) {
3039 *flags |= SF_APPEND;
3040 c_attr[7] = 'A';
3041 }
3042#endif
3043#ifdef SF_NOUNLINK
3044 if (buf->st_flags & SF_NOUNLINK) {
3045 *flags |= SF_NOUNLINK;
3046 c_attr[8] = 'U';
3047 }
3048#endif
3049
3050 /* ! HAVE_STAT_FLAGS */
3051#else
3052
3053#ifdef HAVE_EXT2_IOCTLS
3054 int /* fd, */ r, f;
3055
3056 SL_ENTER(_("sh_unix_getinfo_attr"));
3057
3058 *flags = 0;
3059 (void) buf;
3060
3061 /* open() -> aud_open() R.Wichmann
3062 fd = aud_open (FIL__, __LINE__, SL_YESPRIV, name, O_RDONLY|O_NONBLOCK, 0);
3063 */
3064
3065 if (fd == -1 || name == NULL)
3066 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
3067
3068
3069 r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
3070 /* sl_close_fd (FIL__, __LINE__, fd); */
3071
3072 if (r == -1)
3073 SL_RETURN(-1, _("sh_unix_getinfo_attr"));
3074
3075 if (f == 0)
3076 SL_RETURN(0, _("sh_unix_getinfo_attr"));
3077
3078 *flags = f;
3079
3080/* ! HAVE_EXT2_IOCTLS */
3081#else
3082
3083 SL_ENTER(_("sh_unix_getinfo_attr"));
3084
3085 *flags = 0; /* modified by R.Wichmann */
3086
3087/* ! HAVE_EXT2_IOCTLS */
3088#endif
3089/*
3090 * END
3091 *
3092 * lsattr.c - List file attributes on an ext2 file system
3093 */
3094
3095 if (*flags == 0)
3096 goto theend;
3097
3098#ifdef EXT2_SECRM_FL
3099 if ( (*flags & EXT2_SECRM_FL) != 0 ) c_attr[0] = 's';
3100#endif
3101#ifdef EXT2_UNRM_FL
3102 if ( (*flags & EXT2_UNRM_FL) != 0 ) c_attr[1] = 'u';
3103#endif
3104#ifdef EXT2_SYNC_FL
3105 if ( (*flags & EXT2_SYNC_FL) != 0 ) c_attr[2] = 'S';
3106#endif
3107#ifdef EXT2_IMMUTABLE_FL
3108 if ( (*flags & EXT2_IMMUTABLE_FL) != 0) c_attr[3] = 'i';
3109#endif
3110#ifdef EXT2_APPEND_FL
3111 if ( (*flags & EXT2_APPEND_FL) != 0 ) c_attr[4] = 'a';
3112#endif
3113#ifdef EXT2_NODUMP_FL
3114 if ( (*flags & EXT2_NODUMP_FL) != 0 ) c_attr[5] = 'd';
3115#endif
3116#ifdef EXT2_NOATIME_FL
3117 if ( (*flags & EXT2_NOATIME_FL) != 0) c_attr[6] = 'A';
3118#endif
3119#ifdef EXT2_COMPR_FL
3120 if ( (*flags & EXT2_COMPR_FL) != 0 ) c_attr[7] = 'c';
3121#endif
3122
3123#ifdef EXT2_TOPDIR_FL
3124 if ( (*flags & EXT2_TOPDIR_FL) != 0 ) c_attr[8] = 'T';
3125#endif
3126#ifdef EXT2_DIRSYNC_FL
3127 if ( (*flags & EXT2_DIRSYNC_FL) != 0 ) c_attr[9] = 'D';
3128#endif
3129#ifdef EXT2_NOTAIL_FL
3130 if ( (*flags & EXT2_NOTAIL_FL) != 0 ) c_attr[10] = 't';
3131#endif
3132#ifdef EXT2_JOURNAL_DATA_FL
3133 if ( (*flags & EXT2_JOURNAL_DATA_FL) != 0) c_attr[11] = 'j';
3134#endif
3135
3136 theend:
3137 /* ext2 */
3138#endif
3139
3140 c_attr[12] = '\0';
3141
3142 SL_RETURN(0, _("sh_unix_getinfo_attr"));
3143}
3144
3145/* defined(__linux__) || defined(HAVE_STAT_FLAGS) */
3146#endif
3147
3148/* determine file type
3149 */
3150static
3151int sh_unix_getinfo_type (struct stat * buf,
3152 ShFileType * type,
3153 char * c_mode)
3154{
3155 SL_ENTER(_("sh_unix_getinfo_type"));
3156
3157 if ( S_ISREG(buf->st_mode) ) {
3158 (*type) = SH_FILE_REGULAR;
3159 c_mode[0] = '-';
3160 }
3161 else if ( S_ISLNK(buf->st_mode) ) {
3162 (*type) = SH_FILE_SYMLINK;
3163 c_mode[0] = 'l';
3164 }
3165 else if ( S_ISDIR(buf->st_mode) ) {
3166 (*type) = SH_FILE_DIRECTORY;
3167 c_mode[0] = 'd';
3168 }
3169 else if ( S_ISCHR(buf->st_mode) ) {
3170 (*type) = SH_FILE_CDEV;
3171 c_mode[0] = 'c';
3172 }
3173 else if ( S_ISBLK(buf->st_mode) ) {
3174 (*type) = SH_FILE_BDEV;
3175 c_mode[0] = 'b';
3176 }
3177 else if ( S_ISFIFO(buf->st_mode) ) {
3178 (*type) = SH_FILE_FIFO;
3179 c_mode[0] = '|';
3180 }
3181 else if ( S_ISSOCK(buf->st_mode) ) {
3182 (*type) = SH_FILE_SOCKET;
3183 c_mode[0] = 's';
3184 }
3185 else if ( S_ISDOOR(buf->st_mode) ) {
3186 (*type) = SH_FILE_DOOR;
3187 c_mode[0] = 'D';
3188 }
3189 else if ( S_ISPORT(buf->st_mode) ) {
3190 (*type) = SH_FILE_PORT;
3191 c_mode[0] = 'P';
3192 }
3193 else {
3194 (*type) = SH_FILE_UNKNOWN;
3195 c_mode[0] = '?';
3196 }
3197
3198 SL_RETURN(0, _("sh_unix_getinfo_type"));
3199}
3200
3201int sh_unix_get_ftype(char * fullpath)
3202{
3203 char c_mode[CMODE_SIZE];
3204 struct stat buf;
3205 ShFileType type;
3206 int res;
3207
3208 SL_ENTER(_("sh_unix_get_ftype"));
3209
3210 res = retry_lstat(FIL__, __LINE__, fullpath, &buf);
3211
3212 if (res < 0)
3213 SL_RETURN(SH_FILE_UNKNOWN, _("sh_unix_getinfo_type"));
3214
3215 sh_unix_getinfo_type (&buf, &type, c_mode);
3216
3217 SL_RETURN(type, _("sh_unix_get_ftype"));
3218}
3219
3220
3221static
3222int sh_unix_getinfo_mode (struct stat *buf,
3223 unsigned int * mode,
3224 char * c_mode)
3225{
3226
3227 SL_ENTER(_("sh_unix_getinfo_mode"));
3228
3229 (*mode) = buf->st_mode;
3230
3231 /* make 'ls'-like string */
3232
3233 if ( (buf->st_mode & S_IRUSR) != 0 ) c_mode[1] = 'r';
3234 if ( (buf->st_mode & S_IWUSR) != 0 ) c_mode[2] = 'w';
3235 if ( (buf->st_mode & S_IXUSR) != 0 ) {
3236 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 's';
3237 else c_mode[3] = 'x';
3238 } else {
3239 if ((buf->st_mode & S_ISUID) != 0 ) c_mode[3] = 'S';
3240 }
3241
3242 if ( (buf->st_mode & S_IRGRP) != 0 ) c_mode[4] = 'r';
3243 if ( (buf->st_mode & S_IWGRP) != 0 ) c_mode[5] = 'w';
3244 if ( (buf->st_mode & S_IXGRP) != 0 ) {
3245 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 's';
3246 else c_mode[6] = 'x';
3247 } else {
3248 if ((buf->st_mode & S_ISGID) != 0 ) c_mode[6] = 'S';
3249 }
3250
3251 if ( (buf->st_mode & S_IROTH) != 0 ) c_mode[7] = 'r';
3252 if ( (buf->st_mode & S_IWOTH) != 0 ) c_mode[8] = 'w';
3253#ifdef S_ISVTX /* not POSIX */
3254 if ( (buf->st_mode & S_IXOTH) != 0 ) {
3255 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 't';
3256 else c_mode[9] = 'x';
3257 } else {
3258 if ((buf->st_mode & S_ISVTX) != 0 ) c_mode[9] = 'T';
3259 }
3260#else
3261 if ( (buf->st_mode & S_IXOTH) != 0 ) c_mode[9] = 'x';
3262#endif
3263
3264 SL_RETURN(0, _("sh_unix_getinfo_mode"));
3265}
3266
3267
3268long IO_Limit = 0;
3269
3270void sh_unix_io_pause ()
3271{
3272 long runtime;
3273 float someval;
3274 unsigned long sometime;
3275
3276 if (IO_Limit == 0)
3277 {
3278 return;
3279 }
3280 else
3281 {
3282 runtime = (long) (time(NULL) - sh.statistics.time_start);
3283
3284 if (runtime > 0 && (long)(sh.statistics.bytes_hashed/runtime) > IO_Limit)
3285 {
3286 someval = sh.statistics.bytes_hashed - (IO_Limit * runtime);
3287 someval /= (float) IO_Limit;
3288 if (someval < 1.0)
3289 {
3290 someval *= 1000; /* milliseconds in a second */
3291 sometime = (unsigned long) someval;
3292 retry_msleep(0, sometime);
3293 }
3294 else
3295 {
3296 sometime = (unsigned long) someval;
3297 retry_msleep (sometime, 0);
3298 }
3299 }
3300 }
3301 return;
3302}
3303
3304int sh_unix_set_io_limit (const char * c)
3305{
3306 long val;
3307
3308 SL_ENTER(_("sh_unix_set_io_limit"));
3309
3310 val = strtol (c, (char **)NULL, 10);
3311 if (val < 0)
3312 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
3313 _("set I/O limit"), c);
3314
3315 val = (val < 0 ? 0 : val);
3316
3317 IO_Limit = val * 1024;
3318 SL_RETURN( 0, _("sh_unix_set_io_limit"));
3319}
3320
3321/* obtain file info
3322 */
3323extern int flag_err_debug;
3324
3325#include "sh_ignore.h"
3326
3327int sh_unix_checksum_size (char * filename, struct stat * fbuf,
3328 char * fileHash, int alert_timeout, SL_TICKET fd)
3329{
3330 file_type * tmpFile;
3331 int status;
3332
3333 SL_ENTER(_("sh_unix_checksum_size"));
3334
3335 tmpFile = SH_ALLOC(sizeof(file_type));
3336 tmpFile->link_path = NULL;
3337
3338 if (sh.flag.checkSum != SH_CHECK_INIT)
3339 {
3340 /* lookup file in database */
3341 status = sh_hash_get_it (filename, tmpFile, NULL);
3342 if (status != 0) {
3343 goto out;
3344 }
3345 }
3346 else
3347 {
3348 tmpFile->size = fbuf->st_size;
3349 }
3350
3351 /* if last < current get checksum */
3352 if (tmpFile->size < fbuf->st_size)
3353 {
3354 char hashbuf[KEYBUF_SIZE];
3355 UINT64 local_length = (UINT64) (tmpFile->size < 0 ? 0 : tmpFile->size);
3356 sl_strlcpy(fileHash,
3357 sh_tiger_generic_hash (filename, fd, &(local_length),
3358 alert_timeout, hashbuf, sizeof(hashbuf)),
3359 KEY_LEN+1);
3360
3361 /* return */
3362 if (tmpFile->link_path) SH_FREE(tmpFile->link_path);
3363 SH_FREE(tmpFile);
3364 SL_RETURN( 0, _("sh_unix_checksum_size"));
3365 }
3366
3367 out:
3368 if (tmpFile->link_path) SH_FREE(tmpFile->link_path);
3369 SH_FREE(tmpFile);
3370 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3371 SL_RETURN( -1, _("sh_unix_checksum_size"));
3372}
3373
3374int sh_unix_check_selinux = S_FALSE;
3375int sh_unix_check_acl = S_FALSE;
3376
3377#ifdef USE_ACL
3378
3379#include <sys/acl.h>
3380static char * sh_unix_getinfo_acl (char * path, int fd, struct stat * buf)
3381{
3382 /* system.posix_acl_access, system.posix_acl_default
3383 */
3384 char * out = NULL;
3385 char * collect = NULL;
3386 char * tmp;
3387 char * out_compact;
3388 ssize_t len;
3389 acl_t result;
3390
3391 SL_ENTER(_("sh_unix_getinfo_acl"));
3392
3393 result = (fd == -1) ?
3394 acl_get_file (path, ACL_TYPE_ACCESS) :
3395 acl_get_fd (fd);
3396
3397 if (result)
3398 {
3399 out = acl_to_text (result, &len);
3400 if (out && (len > 0)) {
3401 out_compact = sh_util_acl_compact (out, len);
3402 acl_free(out);
3403 if (out_compact)
3404 {
3405 collect = sh_util_strconcat (_("acl_access:"), out_compact, NULL);
3406 SH_FREE(out_compact);
3407 }
3408 }
3409 acl_free(result);
3410 }
3411
3412
3413 if ( S_ISDIR(buf->st_mode) )
3414 {
3415 result = acl_get_file (path, ACL_TYPE_DEFAULT);
3416
3417 if (result)
3418 {
3419 out = acl_to_text (result, &len);
3420 if (out && (len > 0)) {
3421 out_compact = sh_util_acl_compact (out, len);
3422 acl_free(out);
3423 if (out_compact) {
3424 if (collect) {
3425 tmp = sh_util_strconcat (_("acl_default:"),
3426 out_compact, ":", collect, NULL);
3427 SH_FREE(collect);
3428 }
3429 else {
3430 tmp = sh_util_strconcat (_("acl_default:"), out_compact, NULL);
3431 }
3432 SH_FREE(out_compact);
3433 collect = tmp;
3434 }
3435 }
3436 acl_free(result);
3437 }
3438 }
3439
3440 SL_RETURN((collect),_("sh_unix_getinfo_acl"));
3441}
3442#endif
3443
3444#ifdef USE_XATTR
3445
3446#include <attr/xattr.h>
3447static char * sh_unix_getinfo_xattr_int (char * path, int fd, char * name)
3448{
3449 char * out = NULL;
3450 char * tmp = NULL;
3451 size_t size = 256;
3452 ssize_t result;
3453
3454 SL_ENTER(_("sh_unix_getinfo_xattr_int"));
3455
3456 out = SH_ALLOC(size);
3457
3458 result = (fd == -1) ?
3459 lgetxattr (path, name, out, size-1) :
3460 fgetxattr (fd, name, out, size-1);
3461
3462 if (result == -1 && errno == ERANGE)
3463 {
3464 SH_FREE(out);
3465 result = (fd == -1) ?
3466 lgetxattr (path, name, NULL, 0) :
3467 fgetxattr (fd, name, NULL, 0);
3468 size = result + 1;
3469 out = SH_ALLOC(size);
3470 result = (fd == -1) ?
3471 lgetxattr (path, name, out, size-1) :
3472 fgetxattr (fd, name, out, size-1);
3473 }
3474
3475 if ((result > 0) && ((size_t)result < size))
3476 {
3477 out[size-1] = '\0';
3478 tmp = out;
3479 }
3480 else
3481 {
3482 SH_FREE(out);
3483 }
3484
3485 SL_RETURN((tmp),_("sh_unix_getinfo_xattr_int"));
3486}
3487
3488
3489static char * sh_unix_getinfo_xattr (char * path, int fd, struct stat * buf)
3490{
3491 /* system.posix_acl_access, system.posix_acl_default, security.selinux
3492 */
3493 char * tmp;
3494 char * out = NULL;
3495 char * collect = NULL;
3496
3497 SL_ENTER(_("sh_unix_getinfo_xattr"));
3498
3499#ifdef USE_ACL
3500 /*
3501 * we need the acl_get_fd/acl_get_file functions, getxattr will only
3502 * yield the raw bytes
3503 */
3504 if (sh_unix_check_acl == S_TRUE)
3505 {
3506 out = sh_unix_getinfo_acl(path, fd, buf);
3507
3508 if (out)
3509 {
3510 collect = out;
3511 }
3512 }
3513#else
3514 (void) buf;
3515#endif
3516
3517 if (sh_unix_check_selinux == S_TRUE)
3518 {
3519 out = sh_unix_getinfo_xattr_int(path, fd, _("security.selinux"));
3520
3521 if (out)
3522 {
3523 if (collect) {
3524 tmp = sh_util_strconcat(_("selinux:"), out, ":", collect, NULL);
3525 SH_FREE(collect);
3526 }
3527 else {
3528 tmp = sh_util_strconcat(_("selinux:"), out, NULL);
3529 }
3530 SH_FREE(out);
3531 collect = tmp;
3532 }
3533 }
3534
3535 SL_RETURN((collect),_("sh_unix_getinfo_xattr"));
3536}
3537#endif
3538
3539#ifdef USE_XATTR
3540int sh_unix_setcheckselinux (const char * c)
3541{
3542 int i;
3543 SL_ENTER(_("sh_unix_setcheckselinux"));
3544 i = sh_util_flagval(c, &(sh_unix_check_selinux));
3545
3546 SL_RETURN(i, _("sh_unix_setcheckselinux"));
3547}
3548#endif
3549
3550#ifdef USE_ACL
3551int sh_unix_setcheckacl (const char * c)
3552{
3553 int i;
3554 SL_ENTER(_("sh_unix_setcheckacl"));
3555 i = sh_util_flagval(c, &(sh_unix_check_acl));
3556
3557 SL_RETURN(i, _("sh_unix_setcheckacl"));
3558}
3559#endif
3560
3561#ifdef HAVE_LIBZ
3562#include <zlib.h>
3563#endif
3564
3565int sh_unix_getinfo (int level, char * filename, file_type * theFile,
3566 char * fileHash, int policy)
3567{
3568 char timestr[81];
3569 long runtim;
3570 struct stat buf;
3571 struct stat lbuf;
3572 struct stat fbuf;
3573 int stat_return;
3574 int stat_errno = 0;
3575
3576 ShFileType type;
3577 unsigned int mode;
3578 char * tmp;
3579 char * tmp2;
3580
3581 char * linknamebuf;
3582 int linksize;
3583
3584 extern int get_the_fd (SL_TICKET ticket);
3585
3586 SL_TICKET rval_open;
3587 int err_open = 0;
3588
3589 int fd;
3590 int fstat_return;
3591 int fstat_errno = 0;
3592 int try = 0;
3593
3594 sh_string * content = NULL;
3595
3596 time_t tend;
3597 time_t tstart;
3598
3599
3600 char * path = NULL;
3601
3602 int alert_timeout = 120;
3603
3604 path = theFile->fullpath;
3605
3606 SL_ENTER(_("sh_unix_getinfo"));
3607
3608 /* --- Stat the file, and get checksum. ---
3609 */
3610 tstart = time(NULL);
3611
3612 stat_return = retry_lstat (FIL__, __LINE__,
3613 path /* theFile->fullpath */, &buf);
3614
3615 if (stat_return)
3616 stat_errno = errno;
3617
3618 theFile->link_path = NULL;
3619
3620 try_again:
3621
3622 fd = -1;
3623 fstat_return = -1;
3624 rval_open = -1;
3625
3626 if (stat_return == 0 && S_ISREG(buf.st_mode))
3627 {
3628 rval_open = sl_open_fastread (FIL__, __LINE__,
3629 path /* theFile->fullpath */, SL_YESPRIV);
3630 if (SL_ISERROR(rval_open))
3631 {
3632 char * stale = sl_check_stale();
3633
3634 if (stale)
3635 {
3636 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, err_open, MSG_E_SUBGEN,
3637 stale, _("sh_unix_getinfo_open"));
3638 }
3639
3640 if (errno == EBADF && try == 0) /* obsolete, but we keep this, just in case */
3641 {
3642 ++try;
3643 goto try_again;
3644 }
3645 err_open = errno;
3646 }
3647
3648 alert_timeout = 120; /* this is per 8K block now ! */
3649
3650 if (path[1] == 'p' && path[5] == '/' && path[2] == 'r' &&
3651 path[3] == 'o' && path[4] == 'c' && path[0] == '/')
3652 {
3653 /* seven is magic */
3654 alert_timeout = 7;
3655 }
3656
3657 fd = get_the_fd(rval_open);
3658 }
3659
3660 tend = time(NULL);
3661
3662 /* An unprivileged user may slow lstat/open to a crawl
3663 * with clever path/symlink setup
3664 */
3665 if ((tend - tstart) > (time_t) /* 60 */ 6)
3666 {
3667 tmp2 = sh_util_safe_name (theFile->fullpath);
3668 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_TOOLATE,
3669 (long)(tend - tstart), tmp2);
3670 SH_FREE(tmp2);
3671 }
3672
3673 if (fd >= 0)
3674 {
3675 fstat_return = retry_fstat (FIL__, __LINE__, fd, &fbuf);
3676
3677 if (fstat_return)
3678 {
3679 char * stale;
3680
3681 fstat_errno = errno;
3682
3683 stale = sl_check_stale();
3684
3685 if (stale)
3686 {
3687 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, fstat_errno,
3688 MSG_E_SUBGEN,
3689 stale, _("sh_unix_getinfo_fstat"));
3690 }
3691
3692 if (try == 0) /* obsolete, but we keep this, just in case */
3693 {
3694 ++try;
3695 sl_close(rval_open);
3696 goto try_again;
3697 }
3698 }
3699 }
3700 else
3701 {
3702 fd = -1;
3703 }
3704
3705
3706 /* --- case 1: lstat failed ---
3707 */
3708 if (stat_return != 0)
3709 {
3710 stat_return = errno;
3711 if (!SL_ISERROR(rval_open))
3712 sl_close(rval_open);
3713 if (sh.flag.checkSum == SH_CHECK_INIT ||
3714 (sh_hash_have_it (theFile->fullpath) >= 0 &&
3715 (!SH_FFLAG_REPORTED_SET(theFile->file_reported))))
3716 {
3717 if (S_FALSE == sh_ignore_chk_del(theFile->fullpath)) {
3718 char errbuf[SH_ERRBUF_SIZE];
3719 uid_t euid;
3720 (void) sl_get_euid(&euid);
3721 tmp2 = sh_util_safe_name (theFile->fullpath);
3722 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_STAT,
3723 _("lstat"),
3724 sh_error_message (stat_errno, errbuf, sizeof(errbuf)),
3725 (long) euid,
3726 tmp2);
3727 SH_FREE(tmp2);
3728 }
3729 }
3730 SL_RETURN((-1),_("sh_unix_getinfo"));
3731 }
3732
3733 /* --- case 2: not a regular file ---
3734 */
3735 else if (! S_ISREG(buf.st_mode))
3736 {
3737 if (fileHash != NULL)
3738 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3739 }
3740
3741 /* --- case 3a: a regular file, fstat ok ---
3742 */
3743 else if (fstat_return == 0 &&
3744 buf.st_mode == fbuf.st_mode &&
3745 buf.st_ino == fbuf.st_ino &&
3746 buf.st_uid == fbuf.st_uid &&
3747 buf.st_gid == fbuf.st_gid &&
3748 buf.st_dev == fbuf.st_dev )
3749 {
3750 if (fileHash != NULL)
3751 {
3752 if ((theFile->check_mask & MODI_CHK) == 0 ||
3753 sh_restrict_this(theFile->fullpath, (UINT64) fbuf.st_size,
3754 (UINT64) fbuf.st_mode, rval_open))
3755 {
3756 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3757 }
3758 else if ((theFile->check_mask & MODI_PREL) != 0 &&
3759 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
3760 alert_timeout, theFile->fullpath))
3761 {
3762 if (0 != sh_prelink_run (theFile->fullpath,
3763 fileHash, alert_timeout))
3764 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3765 }
3766 else
3767 {
3768 char hashbuf[KEYBUF_SIZE];
3769 UINT64 length_nolim = TIGER_NOLIM;
3770
3771 if (MODI_TXT_ENABLED(theFile->check_mask) && fbuf.st_size < (10 * SH_TXT_MAX))
3772 {
3773 sl_init_content (rval_open, fbuf.st_size);
3774 }
3775
3776 sl_strlcpy(fileHash,
3777 sh_tiger_generic_hash (theFile->fullpath,
3778 rval_open, &length_nolim,
3779 alert_timeout,
3780 hashbuf, sizeof(hashbuf)),
3781 KEY_LEN+1);
3782
3783 content = sl_get_content(rval_open);
3784 content = sh_string_copy(content);
3785
3786 if ((theFile->check_mask & MODI_SGROW) != 0)
3787 {
3788 fbuf.st_size = (off_t) length_nolim;
3789 buf.st_size = fbuf.st_size;
3790 sl_rewind(rval_open);
3791 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3792 &fileHash[KEY_LEN + 1],
3793 alert_timeout, rval_open);
3794 }
3795 }
3796 }
3797 }
3798
3799 /* --- case 3b: a regular file, fstat ok, but different ---
3800 */
3801 else if (fstat_return == 0 && S_ISREG(fbuf.st_mode))
3802 {
3803 memcpy (&buf, &fbuf, sizeof( struct stat ));
3804
3805 if (fileHash != NULL)
3806 {
3807 if ((theFile->check_mask & MODI_CHK) == 0 ||
3808 sh_restrict_this(theFile->fullpath, (UINT64) fbuf.st_size,
3809 (UINT64) fbuf.st_mode, rval_open))
3810 {
3811 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3812 }
3813 else if (policy == SH_LEVEL_PRELINK &&
3814 S_TRUE == sh_prelink_iself(rval_open, fbuf.st_size,
3815 alert_timeout, theFile->fullpath))
3816 {
3817 if (0 != sh_prelink_run (theFile->fullpath,
3818 fileHash, alert_timeout))
3819 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3820 }
3821 else
3822 {
3823 char hashbuf[KEYBUF_SIZE];
3824 UINT64 length_nolim = TIGER_NOLIM;
3825
3826 if (MODI_TXT_ENABLED(theFile->check_mask) && fbuf.st_size < (10 * SH_TXT_MAX))
3827 {
3828 sl_init_content (rval_open, fbuf.st_size);
3829 }
3830
3831 sl_strlcpy(fileHash,
3832 sh_tiger_generic_hash (theFile->fullpath, rval_open,
3833 &length_nolim,
3834 alert_timeout,
3835 hashbuf, sizeof(hashbuf)),
3836 KEY_LEN + 1);
3837
3838 content = sl_get_content(rval_open);
3839 content = sh_string_copy(content);
3840
3841 if ((theFile->check_mask & MODI_SGROW) != 0)
3842 {
3843 fbuf.st_size = (off_t) length_nolim;
3844 buf.st_size = fbuf.st_size;
3845 sl_rewind(rval_open);
3846 sh_unix_checksum_size (theFile->fullpath, &fbuf,
3847 &fileHash[KEY_LEN + 1],
3848 alert_timeout, rval_open);
3849 }
3850 }
3851 }
3852 }
3853
3854 /* --- case 4: a regular file, fstat failed ---
3855 */
3856
3857 else /* fstat_return != 0 or !S_ISREG(fbuf.st_mode) or open() failed */
3858 {
3859 uid_t euid;
3860
3861 if (fileHash != NULL)
3862 sl_strlcpy(fileHash, SH_KEY_NULL, KEY_LEN+1);
3863
3864 if ((theFile->check_mask & MODI_CHK) != 0)
3865 {
3866 tmp2 = sh_util_safe_name (theFile->fullpath);
3867
3868
3869 if (fd >= 0 && fstat_return != 0)
3870 {
3871 char errbuf[SH_ERRBUF_SIZE];
3872 (void) sl_get_euid(&euid);
3873
3874 sh_error_handle (level, FIL__, __LINE__, stat_return, MSG_FI_STAT,
3875 _("fstat"),
3876 sh_error_message (fstat_errno, errbuf, sizeof(errbuf)),
3877 (long) euid,
3878 tmp2);
3879 }
3880 else if (fd >= 0 && !S_ISREG(fbuf.st_mode))
3881 {
3882 sh_error_handle (level, FIL__, __LINE__, fstat_errno,
3883 MSG_E_NOTREG, tmp2);
3884 }
3885 else
3886 {
3887 char errbuf[SH_ERRBUF_SIZE];
3888 char errbuf2[SH_ERRBUF_SIZE];
3889 sl_strlcpy(errbuf, sl_error_string(rval_open), sizeof(errbuf));
3890 sh_error_message(err_open, errbuf2, sizeof(errbuf2));
3891 sh_error_handle (level, FIL__, __LINE__, err_open,
3892 MSG_E_READ, errbuf, errbuf2, tmp2);
3893 }
3894 SH_FREE(tmp2);
3895 }
3896 }
3897
3898
3899 /* --- Determine file type. ---
3900 */
3901 memset (theFile->c_mode, '-', CMODE_SIZE-1);
3902 theFile->c_mode[CMODE_SIZE-1] = '\0';
3903
3904 memset (theFile->link_c_mode, '-', CMODE_SIZE-1);
3905 theFile->link_c_mode[CMODE_SIZE-1] = '\0';
3906
3907 sh_unix_getinfo_type (&buf, &type, theFile->c_mode);
3908 theFile->type = type;
3909
3910#if defined(__linux__) || defined(HAVE_STAT_FLAGS)
3911
3912 /* --- Determine file attributes. ---
3913 */
3914 memset (theFile->c_attributes, '-', ATTRBUF_SIZE);
3915 theFile->c_attributes[ATTRBUF_USED] = '\0';
3916 theFile->attributes = 0;
3917
3918#if (defined(__linux__) && (defined(HAVE_LINUX_EXT2_FS_H) || defined(HAVE_EXT2FS_EXT2_FS_H))) || defined(HAVE_STAT_FLAGS)
3919 if (theFile->c_mode[0] != 'c' && theFile->c_mode[0] != 'b' &&
3920 theFile->c_mode[0] != 'l' )
3921 sh_unix_getinfo_attr(theFile->fullpath,
3922 &theFile->attributes, theFile->c_attributes,
3923 fd, &buf);
3924#endif
3925#endif
3926
3927#if defined(USE_XATTR) && defined(USE_ACL)
3928 if (sh_unix_check_selinux == S_TRUE || sh_unix_check_acl == S_TRUE)
3929 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3930#elif defined(USE_XATTR)
3931 if (sh_unix_check_selinux == S_TRUE)
3932 theFile->attr_string = sh_unix_getinfo_xattr (theFile->fullpath, fd, &buf);
3933#elif defined(USE_ACL)
3934 if (sh_unix_check_acl == S_TRUE)
3935 theFile->attr_string = sh_unix_getinfo_acl (theFile->fullpath, fd, &buf);
3936#else
3937 theFile->attr_string = NULL;
3938#endif
3939
3940 if (!SL_ISERROR(rval_open))
3941 sl_close(rval_open);
3942
3943
3944 /* --- I/O limit. ---
3945 */
3946 if (IO_Limit > 0)
3947 {
3948 runtim = (long) (time(NULL) - sh.statistics.time_start);
3949
3950 if (runtim > 0 && (long)(sh.statistics.bytes_hashed/runtim) > IO_Limit)
3951 retry_msleep(1, 0);
3952 }
3953
3954 /* --- Determine permissions. ---
3955 */
3956 sh_unix_getinfo_mode (&buf, &mode, theFile->c_mode);
3957
3958 /* --- Trivia. ---
3959 */
3960 theFile->dev = buf.st_dev;
3961 theFile->ino = buf.st_ino;
3962 theFile->mode = buf.st_mode;
3963 theFile->hardlinks = buf.st_nlink;
3964 theFile->owner = buf.st_uid;
3965 theFile->group = buf.st_gid;
3966 theFile->rdev = buf.st_rdev;
3967 theFile->size = buf.st_size;
3968 theFile->blksize = (unsigned long) buf.st_blksize;
3969 theFile->blocks = (unsigned long) buf.st_blocks;
3970 theFile->atime = buf.st_atime;
3971 theFile->mtime = buf.st_mtime;
3972 theFile->ctime = buf.st_ctime;
3973
3974
3975 /* --- Owner and group. ---
3976 */
3977
3978 if (NULL == sh_unix_getGIDname(SH_ERR_ALL, buf.st_gid, theFile->c_group, GROUP_MAX+1)) {
3979
3980 tmp2 = sh_util_safe_name (theFile->fullpath);
3981
3982 if (policy == SH_LEVEL_ALLIGNORE)
3983 {
3984 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
3985 MSG_FI_NOGRP,
3986 (long) buf.st_gid, tmp2);
3987 }
3988 else
3989 {
3990 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
3991 MSG_FI_NOGRP,
3992 (long) buf.st_gid, tmp2);
3993 }
3994 SH_FREE(tmp2);
3995 sl_snprintf(theFile->c_group, GROUP_MAX+1, "%d", (long) buf.st_gid);
3996 }
3997
3998
3999 if (NULL == sh_unix_getUIDname(SH_ERR_ALL, buf.st_uid, theFile->c_owner, USER_MAX+1)) {
4000
4001 tmp2 = sh_util_safe_name (theFile->fullpath);
4002
4003 if (policy == SH_LEVEL_ALLIGNORE)
4004 {
4005 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, ENOENT,
4006 MSG_FI_NOUSR,
4007 (long) buf.st_uid, tmp2);
4008 }
4009 else
4010 {
4011 sh_error_handle (ShDFLevel[SH_ERR_T_NAME], FIL__, __LINE__, ENOENT,
4012 MSG_FI_NOUSR,
4013 (long) buf.st_uid, tmp2);
4014 }
4015 SH_FREE(tmp2);
4016 sl_snprintf(theFile->c_owner, USER_MAX+1, "%d", (long) buf.st_uid);
4017 }
4018
4019 /* --- Output the file. ---
4020 */
4021 if (flag_err_debug == SL_TRUE)
4022 {
4023 tmp2 = sh_util_safe_name ((filename == NULL) ?
4024 theFile->fullpath : filename);
4025 (void) sh_unix_time(theFile->mtime, timestr, sizeof(timestr));
4026 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LIST,
4027 theFile->c_mode,
4028 theFile->hardlinks,
4029 theFile->c_owner,
4030 theFile->c_group,
4031 (unsigned long) theFile->size,
4032 timestr,
4033 tmp2);
4034 SH_FREE(tmp2);
4035 }
4036
4037 /* --- Check for links. ---
4038 */
4039 if (theFile->c_mode[0] == 'l')
4040 {
4041 linknamebuf = SH_ALLOC(PATH_MAX);
4042
4043 /* flawfinder: ignore */
4044 linksize = readlink (theFile->fullpath, linknamebuf, PATH_MAX-1);
4045
4046 if (linksize < (PATH_MAX-1) && linksize >= 0)
4047 linknamebuf[linksize] = '\0';
4048 else
4049 linknamebuf[PATH_MAX-1] = '\0';
4050
4051 if (linksize < 0)
4052 {
4053 char errbuf[SH_ERRBUF_SIZE];
4054 linksize = errno;
4055 tmp2 = sh_util_safe_name (theFile->fullpath);
4056 sh_error_handle (level, FIL__, __LINE__, linksize, MSG_FI_RDLNK,
4057 sh_error_message (linksize, errbuf, sizeof(errbuf)), tmp2);
4058 SH_FREE(tmp2);
4059 SH_FREE(linknamebuf);
4060 theFile->link_path = sh_util_strdup("-");
4061 SL_RETURN((-1),_("sh_unix_getinfo"));
4062 }
4063
4064 if (linknamebuf[0] == '/')
4065 {
4066 theFile->link_path = sh_util_strdup (linknamebuf);
4067 }
4068 else
4069 {
4070 tmp = sh_util_dirname(theFile->fullpath);
4071 if (tmp) {
4072 theFile->link_path = SH_ALLOC(PATH_MAX);
4073 sl_strlcpy (theFile->link_path, tmp, PATH_MAX);
4074 SH_FREE(tmp);
4075 } else {
4076 theFile->link_path = SH_ALLOC(PATH_MAX);
4077 theFile->link_path[0] = '\0';
4078 }
4079 /*
4080 * Only attach '/' if not root directory. Handle "//", which
4081 * according to POSIX is implementation-defined, and may be
4082 * different from "/" (however, three or more '/' will collapse
4083 * to one).
4084 */
4085 tmp = theFile->link_path; while (*tmp == '/') ++tmp;
4086 if (*tmp != '\0')
4087 {
4088 sl_strlcat (theFile->link_path, "/", PATH_MAX);
4089 }
4090 sl_strlcat (theFile->link_path, linknamebuf, PATH_MAX);
4091 }
4092
4093 /* stat the link
4094 */
4095 stat_return = retry_lstat (FIL__, __LINE__, theFile->link_path, &lbuf);
4096
4097 /* check for error
4098 */
4099 if (stat_return != 0)
4100 {
4101 stat_return = errno;
4102 tmp = sh_util_safe_name (theFile->fullpath);
4103 tmp2 = sh_util_safe_name (theFile->link_path);
4104 if (stat_return != ENOENT)
4105 {
4106 uid_t euid;
4107 char errbuf[SH_ERRBUF_SIZE];
4108
4109 (void) sl_get_euid(&euid);
4110 sh_error_handle (level, FIL__, __LINE__, stat_return,
4111 MSG_FI_STAT,
4112 _("lstat"),
4113 sh_error_message (stat_return,errbuf, sizeof(errbuf)),
4114 (long) euid,
4115 tmp2);
4116 }
4117 else
4118 {
4119 /* a dangling link -- everybody seems to have plenty of them
4120 */
4121 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_DLNK,
4122 tmp, tmp2);
4123 }
4124 theFile->linkisok = BAD;
4125 SH_FREE(tmp);
4126 SH_FREE(tmp2);
4127 SH_FREE(linknamebuf);
4128 /*
4129 * changed Tue Feb 10 16:16:13 CET 2004:
4130 * add dangling symlinks into database
4131 * SL_RETURN((-1),_("sh_unix_getinfo"));
4132 */
4133 theFile->linkmode = 0;
4134 SL_RETURN((0),_("sh_unix_getinfo"));
4135 }
4136
4137 theFile->linkisok = GOOD;
4138
4139
4140 /* --- Determine file type. ---
4141 */
4142 sh_unix_getinfo_type (&lbuf, &type, theFile->link_c_mode);
4143 theFile->type = type;
4144
4145 /* --- Determine permissions. ---
4146 */
4147 sh_unix_getinfo_mode (&lbuf, &mode, theFile->link_c_mode);
4148 theFile->linkmode = lbuf.st_mode;
4149
4150 /* --- Output the link. ---
4151 */
4152 if (theFile->linkisok == GOOD)
4153 {
4154 tmp2 = sh_util_safe_name (linknamebuf);
4155 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_FI_LLNK,
4156 theFile->link_c_mode, tmp2);
4157 SH_FREE(tmp2);
4158 }
4159 SH_FREE(linknamebuf);
4160 }
4161 else /* not a link */
4162 {
4163 if (content)
4164 {
4165#ifdef HAVE_LIBZ
4166 unsigned long clen;
4167 unsigned char * compressed;
4168#ifdef HAVE_COMPRESSBOUND
4169 clen = compressBound(sh_string_len(content));
4170#else
4171 if (sh_string_len(content) > 10*SH_TXT_MAX)
4172 clen = SH_TXT_MAX;
4173 else
4174 clen = 13 + (int)(1.0001*sh_string_len(content));
4175#endif
4176 compressed = SH_ALLOC(clen);
4177 if (Z_OK == compress(compressed, &clen,
4178 (unsigned char *) sh_string_str(content),
4179 sh_string_len(content)))
4180 {
4181 if (clen < SH_TXT_MAX)
4182 {
4183 sh_util_base64_enc_alloc (&(theFile->link_path),
4184 (char *) compressed, clen);
4185 }
4186 else
4187 {
4188 char tmsg[128];
4189 char * tpath = sh_util_safe_name (theFile->fullpath);
4190 sl_snprintf(tmsg, sizeof(tmsg),
4191 _("compressed file too large (%lu bytes)"),
4192 clen);
4193 sh_error_handle (SH_ERR_WARN, FIL__, __LINE__, -1,
4194 MSG_E_SUBGPATH, tmsg,
4195 _("sh_unix_getinfo"), tpath);
4196 SH_FREE(tpath);
4197 }
4198 }
4199 SH_FREE(compressed);
4200#endif
4201 sh_string_destroy(&content);
4202 }
4203 }
4204 SL_RETURN((0),_("sh_unix_getinfo"));
4205}
4206
4207/* #if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE) */
4208#endif
4209
4210int sh_unix_unlock(char * lockfile, char * flag)
4211{
4212 int error = 0;
4213
4214 SL_ENTER(_("sh_unix_unlock"));
4215
4216 if (sh.flag.isdaemon == S_FALSE && flag == NULL)
4217 SL_RETURN((0),_("sh_unix_unlock"));
4218
4219 /* --- Logfile is not locked to us. ---
4220 */
4221 if (sh.flag.islocked == BAD && flag != NULL)
4222 SL_RETURN((-1),_("sh_unix_unlock"));
4223
4224 /* --- Check whether the directory is secure. ---
4225 */
4226 if (0 != tf_trust_check (lockfile, SL_YESPRIV))
4227 SL_RETURN((-1),_("sh_unix_unlock"));
4228
4229 /* --- Delete the lock file. ---
4230 */
4231 error = retry_aud_unlink (FIL__, __LINE__, lockfile);
4232
4233 if (error == 0)
4234 {
4235 if (flag != NULL)
4236 sh.flag.islocked = BAD; /* not locked anymore */
4237 }
4238 else if (flag != NULL)
4239 {
4240 char errbuf[SH_ERRBUF_SIZE];
4241 error = errno;
4242 sh_error_handle ((-1), FIL__, __LINE__, error, MSG_E_UNLNK,
4243 sh_error_message(error, errbuf, sizeof(errbuf)),
4244 lockfile);
4245 SL_RETURN((-1),_("sh_unix_unlock"));
4246 }
4247 SL_RETURN((0),_("sh_unix_unlock"));
4248}
4249
4250int sh_unix_check_piddir (char * pidpath)
4251{
4252 static struct stat buf;
4253 int status = 0;
4254 char * pid_dir;
4255
4256 SL_ENTER(_("sh_unix_check_piddir"));
4257
4258 pid_dir = sh_util_dirname (pidpath);
4259
4260 status = retry_lstat (FIL__, __LINE__, pid_dir, &buf);
4261
4262 if (status < 0 && errno == ENOENT)
4263 {
4264 status = mkdir (pid_dir, 0777);
4265 if (status < 0)
4266 {
4267 sh_error_handle ((-1), FIL__, __LINE__, status,
4268 MSG_E_SUBGEN,
4269 _("Cannot create PID directory"),
4270 _("sh_unix_check_piddir"));
4271 SH_FREE(pid_dir);
4272 SL_RETURN((-1),_("sh_unix_check_piddir"));
4273 }
4274 }
4275 else if (!S_ISDIR(buf.st_mode))
4276 {
4277 sh_error_handle ((-1), FIL__, __LINE__, status,
4278 MSG_E_SUBGEN,
4279 _("Path of PID directory refers to a non-directory object"),
4280 _("sh_unix_check_piddir"));
4281 SH_FREE(pid_dir);
4282 SL_RETURN((-1),_("sh_unix_check_piddir"));
4283 }
4284 SH_FREE(pid_dir);
4285 SL_RETURN((0),_("sh_unix_check_piddir"));
4286}
4287
4288int sh_unix_lock (char * lockfile, char * flag)
4289{
4290 int filed;
4291 int errnum;
4292 char myPid[64];
4293 SL_TICKET fd;
4294 extern int get_the_fd (SL_TICKET ticket);
4295
4296 SL_ENTER(_("sh_unix_lock"));
4297
4298 sprintf (myPid, "%ld\n", (long) sh.pid); /* known to fit */
4299
4300 if (flag == NULL) /* PID file, check for directory */
4301 {
4302 if (0 != sh_unix_check_piddir (lockfile))
4303 {
4304 SL_RETURN((-1),_("sh_unix_lock"));
4305 }
4306 }
4307
4308 fd = sl_open_safe_rdwr (FIL__, __LINE__,
4309 lockfile, SL_YESPRIV); /* fails if file exists */
4310
4311 if (!SL_ISERROR(fd))
4312 {
4313 errnum = sl_write (fd, myPid, sl_strlen(myPid));
4314 filed = get_the_fd(fd);
4315 fchmod (filed, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
4316 sl_close (fd);
4317
4318 if (!SL_ISERROR(errnum))
4319 {
4320 if (flag != NULL)
4321 sh.flag.islocked = GOOD;
4322 SL_RETURN((0),_("sh_unix_lock"));
4323 }
4324 }
4325
4326 TPT((0, FIL__, __LINE__, _("msg=<open pid file failed>\n")));
4327 if (flag != NULL)
4328 sh.flag.islocked = BAD;
4329 SL_RETURN((-1),_("sh_unix_lock"));
4330
4331 /* notreached */
4332}
4333
4334
4335/* check whether file is locked
4336 */
4337int sh_unix_test_and_lock (char * filename, char * lockfile)
4338{
4339 static struct stat buf;
4340 int status = 0;
4341
4342
4343 SL_TICKET fd;
4344 char line_in[128];
4345
4346 SL_ENTER(_("sh_unix_test_and_lock"));
4347
4348 status = retry_lstat (FIL__, __LINE__, lockfile, &buf);
4349
4350 /* --- No lock file found, try to lock. ---
4351 */
4352
4353 if (status < 0 && errno == ENOENT)
4354 {
4355 if (0 == sh_unix_lock (lockfile, filename))
4356 {
4357 if (filename != NULL)
4358 sh.flag.islocked = GOOD;
4359 SL_RETURN((0),_("sh_unix_test_and_lock"));
4360 }
4361 else
4362 {
4363 sh_error_handle ((-1), FIL__, __LINE__, status,
4364 MSG_E_SUBGEN,
4365 (filename == NULL) ? _("Cannot create PID file (1)") : _("Cannot create lock file (1)"),
4366 _("sh_unix_test_and_lock"));
4367 SL_RETURN((-1),_("sh_unix_test_and_lock"));
4368 }
4369 }
4370 else if (status == 0 && buf.st_size == 0)
4371 {
4372 if (filename != NULL)
4373 sh.flag.islocked = GOOD;
4374 sh_unix_unlock (lockfile, filename);
4375 if (filename != NULL)
4376 sh.flag.islocked = BAD;
4377 if (0 == sh_unix_lock (lockfile, filename))
4378 {
4379 if (filename != NULL)
4380 sh.flag.islocked = GOOD;
4381 SL_RETURN((0),_("sh_unix_test_and_lock"));
4382 }
4383 else
4384 {
4385 sh_error_handle ((-1), FIL__, __LINE__, status,
4386 MSG_E_SUBGEN,
4387 (filename == NULL) ? _("Cannot create PID file (2)") : _("Cannot create lock file (2)"),
4388 _("sh_unix_test_and_lock"));
4389 SL_RETURN((-1),_("sh_unix_test_and_lock"));
4390 }
4391 }
4392
4393 /* --- Check on lock. ---
4394 */
4395
4396 if (status >= 0)
4397 {
4398 fd = sl_open_read (FIL__, __LINE__, lockfile, SL_YESPRIV);
4399 if (SL_ISERROR(fd))
4400 sh_error_handle ((-1), FIL__, __LINE__, fd,
4401 MSG_E_SUBGEN,
4402 (filename == NULL) ? _("Cannot open PID file for read") : _("Cannot open lock file for read"),
4403 _("sh_unix_test_and_lock"));
4404 }
4405 else
4406 fd = -1;
4407
4408 if (!SL_ISERROR(fd))
4409 {
4410 /* read the PID in the lock file
4411 */
4412 status = sl_read (fd, line_in, sizeof(line_in));
4413 line_in[sizeof(line_in)-1] = '\0';
4414
4415 /* convert to numeric
4416 */
4417 if (status > 0)
4418 {
4419 errno = 0;
4420 status = strtol(line_in, (char **)NULL, 10);
4421 if (errno == ERANGE || status <= 0)
4422 {
4423 sh_error_handle ((-1), FIL__, __LINE__, status,
4424 MSG_E_SUBGEN,
4425 (filename == NULL) ? _("Bad PID in PID file") : _("Bad PID in lock file"),
4426 _("sh_unix_test_and_lock"));
4427
4428 status = -1;
4429 }
4430 }
4431 else
4432 {
4433 sh_error_handle ((-1), FIL__, __LINE__, status,
4434 MSG_E_SUBGEN,
4435 (filename == NULL) ? _("Cannot read PID file") : _("Cannot read lock file"),
4436 _("sh_unix_test_and_lock"));
4437 }
4438 sl_close(fd);
4439
4440 if (status > 0 && (unsigned int) status == sh.pid)
4441 {
4442 if (filename != NULL)
4443 sh.flag.islocked = GOOD;
4444 SL_RETURN((0),_("sh_unix_test_and_lock"));
4445 }
4446
4447
4448 /* --- Check whether the process exists. ---
4449 */
4450 if (status > 0)
4451 {
4452 errno = 0;
4453 status = aud_kill (FIL__, __LINE__, status, 0);
4454
4455 /* Does not exist, so remove the stale lock
4456 * and create a new one.
4457 */
4458 if (status < 0 && errno == ESRCH)
4459 {
4460 if (filename != NULL)
4461 sh.flag.islocked = GOOD;
4462 if (0 != sh_unix_unlock(lockfile, filename) && (filename !=NULL))
4463 sh.flag.islocked = BAD;
4464 else
4465 {
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 (3)") : _("Cannot create lock file (3)"),
4477 _("sh_unix_test_and_lock"));
4478 }
4479 if (filename != NULL)
4480 sh.flag.islocked = BAD;
4481 }
4482 }
4483 else
4484 {
4485 sh_error_handle ((-1), FIL__, __LINE__, status,
4486 MSG_E_SUBGEN,
4487 (filename == NULL) ? _("Cannot remove stale PID file, PID may be a running process") : _("Cannot remove stale lock file, PID may be a running process"),
4488 _("sh_unix_test_and_lock"));
4489 if (filename != NULL)
4490 sh.flag.islocked = BAD;
4491 }
4492 }
4493 }
4494 SL_RETURN((-1),_("sh_unix_testlock"));
4495}
4496
4497/* write the PID file
4498 */
4499int sh_unix_write_pid_file()
4500{
4501 return sh_unix_test_and_lock(NULL, sh.srvlog.alt);
4502}
4503
4504/* write lock for filename
4505 */
4506int sh_unix_write_lock_file(char * filename)
4507{
4508 size_t len;
4509 int res;
4510 char * lockfile;
4511
4512 if (filename == NULL)
4513 return (-1);
4514
4515 len = sl_strlen(filename);
4516 if (sl_ok_adds(len, 6))
4517 len += 6;
4518 lockfile = SH_ALLOC(len);
4519 sl_strlcpy(lockfile, filename, len);
4520 sl_strlcat(lockfile, _(".lock"), len);
4521 res = sh_unix_test_and_lock(filename, lockfile);
4522 SH_FREE(lockfile);
4523 return res;
4524}
4525
4526/* rm lock for filename
4527 */
4528int sh_unix_rm_lock_file(char * filename)
4529{
4530 size_t len;
4531 int res;
4532 char * lockfile;
4533
4534 if (filename == NULL)
4535 return (-1);
4536
4537 len = sl_strlen(filename);
4538 if (sl_ok_adds(len, 6))
4539 len += 6;
4540 lockfile = SH_ALLOC(len);
4541 sl_strlcpy(lockfile, filename, len);
4542 sl_strlcat(lockfile, _(".lock"), len);
4543
4544 res = sh_unix_unlock(lockfile, filename);
4545 SH_FREE(lockfile);
4546 return res;
4547}
4548
4549/* rm lock for filename
4550 */
4551int sh_unix_rm_pid_file()
4552{
4553 return sh_unix_unlock(sh.srvlog.alt, NULL);
4554}
4555
4556/* Test whether file exists
4557 */
4558int sh_unix_file_exists(char * path)
4559{
4560 struct stat buf;
4561
4562 SL_ENTER(_("sh_unix_file_exists"));
4563
4564 if (0 == retry_lstat(FIL__, __LINE__, path, &buf))
4565 SL_RETURN( S_TRUE, _("sh_unix_file_exists"));
4566 else
4567 SL_RETURN( S_FALSE, _("sh_unix_file_exists"));
4568}
4569
4570
4571/* Test whether file exists, is a character device, and allows read
4572 * access.
4573 */
4574int sh_unix_device_readable(int fd)
4575{
4576 struct stat buf;
4577
4578 SL_ENTER(_("sh_unix_device_readable"));
4579
4580 if (retry_fstat(FIL__, __LINE__, fd, &buf) == -1)
4581 SL_RETURN( (-1), _("sh_unix_device_readable"));
4582 else if ( S_ISCHR(buf.st_mode) && 0 != (S_IROTH & buf.st_mode) )
4583 SL_RETURN( (0), _("sh_unix_device_readable"));
4584 else
4585 SL_RETURN( (-1), _("sh_unix_device_readable"));
4586}
4587
4588static char preq[16];
4589
4590/* return true if database is remote
4591 */
4592int file_is_remote ()
4593{
4594 static int init = 0;
4595 struct stat buf;
4596
4597 SL_ENTER(_("file_is_remote"));
4598
4599 if (init == 0)
4600 {
4601 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4602 ++init;
4603 }
4604 if (0 == sl_strncmp (sh.data.path, preq, 15))
4605 {
4606 if (sh.data.path[15] != '\0') /* should be start of path */
4607 {
4608 if (0 == stat(&(sh.data.path[15]), &buf))
4609 {
4610 SL_RETURN( S_FALSE, _("file_is_remote"));
4611 }
4612 }
4613 SL_RETURN( S_TRUE, _("file_is_remote"));
4614 }
4615 SL_RETURN( S_FALSE, _("file_is_remote"));
4616}
4617
4618/* Return the path to the configuration/database file.
4619 */
4620char * file_path(char what, char flag)
4621{
4622 static int init = 0;
4623
4624 SL_ENTER(_("file_path"));
4625
4626 if (init == 0)
4627 {
4628 sl_strlcpy(preq, _("REQ_FROM_SERVER"), 16);
4629 ++init;
4630 }
4631
4632 switch (what)
4633 {
4634
4635 case 'C':
4636 if (0 == sl_strncmp (sh.conf.path, preq, 15))
4637 {
4638#if defined(SH_WITH_SERVER)
4639 if (sh.flag.isserver == S_TRUE && sl_strlen(sh.conf.path) == 15)
4640 SL_RETURN( NULL, _("file_path"));
4641 if (sh.flag.isserver == S_TRUE)
4642 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4643#endif
4644 if (flag == 'R')
4645 SL_RETURN( preq, _("file_path"));
4646 if (flag == 'I')
4647 {
4648 if (sl_strlen(sh.conf.path) == 15)
4649 SL_RETURN( NULL, _("file_path"));
4650 else
4651 SL_RETURN( &(sh.conf.path[15]), _("file_path"));
4652 }
4653 SL_RETURN ( preq, _("file_path"));
4654 }
4655 else
4656 SL_RETURN( sh.conf.path, _("file_path"));
4657 /* break; *//* unreachable */
4658
4659 case 'D':
4660 if (0 == sl_strncmp (sh.data.path, preq, 15))
4661 {
4662 if (flag == 'R')
4663 SL_RETURN( preq, _("file_path"));
4664 if (flag == 'W' && sl_strlen(sh.data.path) == 15)
4665 SL_RETURN (NULL, _("file_path"));
4666 if (flag == 'W')
4667 SL_RETURN( &(sh.data.path[15]), _("file_path"));
4668 }
4669 else
4670 SL_RETURN( sh.data.path, _("file_path"));
4671 break;
4672
4673 default:
4674 SL_RETURN( NULL, _("file_path"));
4675 }
4676
4677 return NULL; /* notreached */
4678}
4679/************************************************/
4680/**** Mlock Utilities ****/
4681/************************************************/
4682
4683#include <limits.h>
4684
4685int sh_unix_pagesize()
4686{
4687 int pagesize = 4096;
4688#if defined(_SC_PAGESIZE)
4689 pagesize = sysconf(_SC_PAGESIZE);
4690#elif defined(_SC_PAGE_SIZE)
4691 pagesize = sysconf(_SC_PAGE_SIZE);
4692#elif defined(HAVE_GETPAGESIZE)
4693 pagesize = getpagesize();
4694#elif defined(PAGESIZE)
4695 pagesize = PAGESIZE;
4696#endif
4697
4698 return ((pagesize > 0) ? pagesize : 4096);
4699}
4700
4701typedef struct sh_page_lt {
4702 unsigned long page_start;
4703 int page_refcount;
4704 char file[64];
4705 int line;
4706 struct sh_page_lt * next;
4707} sh_page_l;
4708
4709sh_page_l * sh_page_locked = NULL;
4710volatile int page_locking = 0;
4711
4712unsigned long sh_unix_lookup_page (void * in_addr, size_t len, int * num_pages)
4713{
4714 int pagesize = sh_unix_pagesize();
4715 unsigned long addr = (unsigned long) in_addr;
4716
4717 unsigned long pagebase;
4718 unsigned long pagediff;
4719 unsigned long pagenum = addr / pagesize;
4720
4721 SL_ENTER(_("sh_unix_lookup_page"));
4722#if 0
4723 fprintf(stderr, "mlock: --> base %ld, pagenum: %ld\n",
4724 addr, pagenum);
4725#endif
4726
4727 /* address of first page
4728 */
4729 pagebase = pagenum * pagesize;
4730
4731 /* number of pages
4732 */
4733 pagediff = (addr + len) - pagebase;
4734 pagenum = pagediff / pagesize;
4735 if (pagenum * pagesize < pagediff)
4736 ++pagenum;
4737
4738#if 0
4739 fprintf(stderr, "mlock: --> pagebase %ld, pagediff %ld, (addr + len) %ld\n",
4740 pagebase, pagediff, (addr + len));
4741#endif
4742
4743 *num_pages = pagenum;
4744 SL_RETURN((pagebase), _("sh_unix_lookup_page"));
4745}
4746
4747
4748#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4749
4750SH_MUTEX_STATIC(mutex_mlock,PTHREAD_MUTEX_INITIALIZER);
4751
4752int sh_unix_mlock (const char * file, int line, void * in_addr, size_t len)
4753{
4754 int num_pages;
4755 int status = 0;
4756 int pagesize;
4757 sh_page_l * page_list;
4758 unsigned long addr;
4759#ifdef TEST_MLOCK
4760 int i = 0;
4761#endif
4762
4763 SL_ENTER(_("sh_unix_mlock"));
4764
4765 /* There's no cancellation point here, except if tracing is on
4766 */
4767 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4768
4769 page_list = sh_page_locked;
4770
4771 if (0 != page_locking)
4772 {
4773 status = -1;
4774 goto exit_mlock;
4775 }
4776
4777 page_locking = 1;
4778
4779 pagesize = sh_unix_pagesize();
4780 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4781
4782#ifdef TEST_MLOCK
4783 fprintf(stderr, "mlock: addr %ld, base %ld, pages: %d, length %d\n",
4784 (unsigned long) in_addr, addr, num_pages, len);
4785#endif
4786
4787 /* increase refcount of locked pages
4788 * addr is first page; num_pages is #(consecutive pages) to lock
4789 */
4790
4791 while ((page_list != NULL) && (num_pages > 0))
4792 {
4793#ifdef TEST_MLOCK
4794 fprintf(stderr, "mlock: check page %d: %ld [%d]\n",
4795 i, page_list->page_start, page_list->page_refcount);
4796#endif
4797 if (page_list->page_start == addr)
4798 {
4799 page_list->page_refcount += 1;
4800 num_pages -= 1;
4801 addr += pagesize;
4802#ifdef TEST_MLOCK
4803 fprintf(stderr, "mlock: found page %d: %ld [%d], next page %ld\n",
4804 i, page_list->page_start, page_list->page_refcount, addr);
4805#endif
4806 }
4807#ifdef TEST_MLOCK
4808 ++i;
4809#endif
4810 page_list = page_list->next;
4811 }
4812
4813 /* mlock some more pages, if needed
4814 */
4815 while (num_pages > 0)
4816 {
4817#ifdef TEST_MLOCK
4818 fprintf(stderr, "mlock: lock page %d: mlock %ld [num_pages %d]\n",
4819 i, addr, num_pages);
4820 ++i;
4821#endif
4822 page_list = SH_ALLOC(sizeof(sh_page_l));
4823 page_list->page_start = addr;
4824 page_list->page_refcount = 1;
4825 sl_strlcpy(page_list->file, file, 64);
4826 page_list->line = line;
4827 status = mlock( (void *) addr, pagesize);
4828 if (status != 0)
4829 {
4830#ifdef TEST_MLOCK
4831 char errbuf[SH_ERRBUF_SIZE];
4832 fprintf(stderr, "mlock: error: %s\n",
4833 sh_error_message(errno, errbuf, sizeof(errbuf)));
4834#endif
4835 SH_FREE(page_list);
4836 page_locking = 0;
4837 goto exit_mlock;
4838 }
4839 page_list->next = sh_page_locked;
4840 sh_page_locked = page_list;
4841 num_pages -= 1;
4842 addr += pagesize;
4843 }
4844 page_locking = 0;
4845
4846 exit_mlock:
4847 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
4848
4849 SL_RETURN((status), _("sh_unix_mlock"));
4850}
4851#else
4852int sh_unix_mlock (const char * file, int line, void * in_addr, size_t len)
4853{
4854 (void) file; (void) line;
4855 (void) in_addr; (void) len;
4856 return -1;
4857}
4858#endif
4859
4860#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
4861int sh_unix_munlock (void * in_addr, size_t len)
4862{
4863 int num_pages;
4864 int unlocked;
4865 int status;
4866 int pagesize;
4867 sh_page_l * page_list;
4868 sh_page_l * page_last;
4869 unsigned long addr;
4870
4871 int test_count;
4872 int test_status;
4873 int test_pages;
4874
4875#ifdef TEST_MLOCK
4876 int i = 0;
4877#endif
4878
4879 SL_ENTER(_("sh_unix_munlock"));
4880
4881 /* There's no cancellation point here, except if tracing is on
4882 */
4883 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
4884
4885 unlocked = 0;
4886 status = 0;
4887 page_list = sh_page_locked;
4888
4889 if (0 != page_locking)
4890 {
4891 status = -1;
4892 goto exit_munlock;
4893 }
4894 page_locking = 1;
4895
4896 pagesize = sh_unix_pagesize();
4897 addr = sh_unix_lookup_page (in_addr, len, &num_pages);
4898
4899#ifdef TEST_MLOCK
4900 fprintf(stderr, "munlock: in_addr %ld, addr %ld, pages: %d, length %d\n",
4901 (unsigned long) in_addr, addr, num_pages, len);
4902#endif
4903
4904 test_pages = num_pages;
4905
4906 /* reduce refcount of locked pages
4907 * addr is first page; num_pages is #(consecutive pages) to lock
4908 */
4909 while ((page_list != NULL) && (num_pages > 0))
4910 {
4911#ifdef TEST_MLOCK
4912 fprintf(stderr, "munlock: page %d: %ld [%d]\n",
4913 i, page_list->page_start, page_list->page_refcount);
4914#endif
4915
4916 test_status = 0;
4917 for (test_count = 0; test_count < test_pages; ++test_count)
4918 {
4919 if (page_list->page_start == (addr + (test_count * pagesize)))
4920 {
4921 test_status = 1;
4922 break;
4923 }
4924 }
4925
4926 if (test_status == 1)
4927 {
4928 page_list->page_refcount -= 1;
4929 if (page_list->page_refcount == 0)
4930 {
4931 status = munlock ( (void *) addr, pagesize);
4932 ++unlocked;
4933 }
4934 num_pages -= 1;
4935#ifdef TEST_MLOCK
4936 fprintf(stderr,
4937 "munlock: page %d: %ld [refcount %d], refcount reduced\n",
4938 i, page_list->page_start, page_list->page_refcount);
4939#endif
4940 }
4941#ifdef TEST_MLOCK
4942 ++i;
4943#endif
4944 page_list = page_list->next;
4945 }
4946
4947#ifdef TEST_MLOCK
4948 i = 0;
4949#endif
4950
4951 if (unlocked > 0)
4952 {
4953 page_list = sh_page_locked;
4954 page_last = sh_page_locked;
4955
4956 while ((page_list != NULL) && (unlocked > 0))
4957 {
4958 if (page_list->page_refcount == 0)
4959 {
4960#ifdef TEST_MLOCK
4961 fprintf(stderr, "munlock: remove page %d: %ld [refcount %d]\n",
4962 i, page_list->page_start, page_list->page_refcount);
4963#endif
4964 if (page_last != page_list)
4965 {
4966 page_last->next = page_list->next;
4967 SH_FREE(page_list);
4968 page_list = page_last->next;
4969 }
4970 else
4971 {
4972 page_last = page_list->next;
4973 if (page_list == sh_page_locked)
4974 sh_page_locked = page_list->next;
4975 SH_FREE(page_list);
4976 page_list = page_last;
4977 }
4978 --unlocked;
4979 }
4980 else
4981 {
4982#ifdef TEST_MLOCK
4983 fprintf(stderr, "munlock: skip page %d: %ld [refcount %d]\n",
4984 i, page_list->page_start, page_list->page_refcount);
4985#endif
4986
4987 page_last = page_list;
4988 page_list = page_list->next;
4989 }
4990#ifdef TEST_MLOCK
4991 ++i;
4992#endif
4993 }
4994 }
4995
4996 page_locking = 0;
4997
4998 exit_munlock:
4999 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
5000 SL_RETURN((status), _("sh_unix_munlock"));
5001}
5002#else
5003int sh_unix_munlock (void * in_addr, size_t len)
5004{
5005 (void) in_addr; (void) len;
5006 return -1;
5007}
5008#endif
5009
5010int sh_unix_count_mlock()
5011{
5012 int i = 0;
5013 char str[32][64];
5014 sh_page_l * page_list;
5015
5016 SL_ENTER(_("sh_unix_count_mlock"));
5017
5018#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
5019 /* There's no cancellation point here, except if tracing is on
5020 */
5021 SH_MUTEX_LOCK_UNSAFE(mutex_mlock);
5022#endif
5023
5024 page_list = sh_page_locked;
5025
5026 while (page_list != NULL)
5027 {
5028#ifdef WITH_TPT
5029 if (i < 32)
5030 sl_snprintf(str[i], 64, _("file: %s line: %d page: %d"),
5031 page_list->file, page_list->line, i+1);
5032#endif
5033 page_list = page_list->next;
5034 ++i;
5035 }
5036
5037#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
5038 SH_MUTEX_UNLOCK_UNSAFE(mutex_mlock);
5039#endif
5040
5041#ifdef WITH_TPT
5042 {
5043 int j = 0;
5044 while (j < i && j < 32)
5045 {
5046 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, j, MSG_E_SUBGEN,
5047 str[j], _("sh_unix_count_mlock"));
5048 ++j;
5049 }
5050 }
5051#endif
5052
5053 sl_snprintf(str[0], 64, _("%d pages locked"), i);
5054 sh_error_handle(SH_ERR_INFO, FIL__, __LINE__, i, MSG_E_SUBGEN,
5055 str[0], _("sh_unix_count_mlock"));
5056 SL_RETURN((i), _("sh_unix_count_mlock"));
5057}
5058
5059/************************************************/
5060/************************************************/
5061/**** Stealth Utilities ****/
5062/************************************************/
5063/************************************************/
5064#ifdef SH_STEALTH
5065
5066void sh_unix_xor_code (char * str, int len)
5067{
5068 register int i;
5069
5070 for (i = 0; i < len; ++i) str[i] ^= (char) XOR_CODE;
5071 return;
5072}
5073
5074#if !defined(SH_STEALTH_MICRO)
5075
5076
5077int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
5078 unsigned long * bytes_read);
5079unsigned long first_hex_block(SL_TICKET fd, unsigned long * max);
5080
5081/*
5082 * --- Get hidden data from a block of hex data. ---
5083 */
5084int sh_unix_getline_stealth (SL_TICKET fd, char * str, int len)
5085{
5086 int add_off = 0, llen;
5087 static unsigned long off_data = 0;
5088 static unsigned long max_data = 0;
5089 static unsigned long bytes_read = 0;
5090 static int stealth_init = BAD;
5091
5092 SL_ENTER(_("sh_unix_getline_stealth"));
5093
5094 if (str == NULL)
5095 {
5096 off_data = 0;
5097 max_data = 0;
5098 bytes_read = 0;
5099 stealth_init = BAD;
5100 SL_RETURN(0, _("sh_unix_getline_stealth"));
5101 }
5102
5103 /* --- Initialize. ---
5104 */
5105 if (stealth_init == BAD)
5106 {
5107 off_data = first_hex_block(fd, &max_data);
5108 if (off_data == 0)
5109 {
5110 dlog(1, FIL__, __LINE__,
5111 _("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"));
5112 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
5113 _("Stealth config file."));
5114 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
5115 }
5116 stealth_init = GOOD;
5117 max_data += off_data;
5118 }
5119
5120 /* --- Seek to proper position. ---
5121 */
5122 if (bytes_read >= max_data || add_off < 0)
5123 {
5124 dlog(1, FIL__, __LINE__,
5125 _("The capacity of the container image file for the stealth config file seems to be too small. Your config file is likely truncated.\n"));
5126 sh_error_handle ((-1), FIL__, __LINE__, EIO, MSG_P_NODATA,
5127 _("Stealth config file."));
5128 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
5129 }
5130 sl_seek(fd, off_data);
5131
5132 /* --- Read one line. ---
5133 */
5134 add_off = hideout_hex_block(fd, (unsigned char *) str, len, &bytes_read);
5135 off_data += add_off;
5136
5137 llen = sl_strlen(str);
5138 SL_RETURN(llen, _("sh_unix_getline_stealth"));
5139}
5140
5141int hideout_hex_block(SL_TICKET fd, unsigned char * str, int len,
5142 unsigned long * bytes_read)
5143{
5144
5145 register int i, j, k;
5146 unsigned char c, e;
5147 register int num;
5148 unsigned char mask[9] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
5149 unsigned long here = 0;
5150 unsigned long retval = 0;
5151 unsigned long bread = 0;
5152
5153 SL_ENTER(_("hideout_hex_block"));
5154
5155 ASSERT_RET((len > 1), _("len > 1"), (0));
5156
5157 --len;
5158
5159 i = 0;
5160 while (i < len)
5161 {
5162 for (j = 0; j < 8; ++j)
5163 {
5164
5165 /* --- Get a low byte, modify, read back. ---
5166 */
5167 for (k = 0; k < 2; ++k)
5168 {
5169 /* -- Skip whitespace. ---
5170 */
5171 c = ' ';
5172 do {
5173 do {
5174 num = sl_read (fd, &c, 1);
5175 } while (num == 0 && errno == EINTR);
5176 if (num > 0)
5177 ++here;
5178 else if (num == 0)
5179 SL_RETURN((0), _("hideout_hex_block"));
5180 else
5181 SL_RETURN((-1), _("hideout_hex_block"));
5182 } while (c == '\n' || c == '\t' || c == '\r' ||
5183 c == ' ');
5184 }
5185
5186
5187 /* --- e is the value of the low byte. ---
5188 */
5189 e = (unsigned char) sh_util_hexchar( c );
5190 if ((e & mask[7]) != 0) /* bit is set */
5191 str[i] |= mask[j];
5192 else /* bit is not set */
5193 str[i] &= ~mask[j];
5194
5195 bread += 1;
5196 }
5197 if (str[i] == '\n') break;
5198 ++i;
5199 }
5200
5201 if (i != 0)
5202 str[i] = '\0';
5203 else
5204 str[i+1] = '\0'; /* keep newline and terminate */
5205 retval += here;
5206 *bytes_read += (bread/8);
5207
5208 SL_RETURN(retval, _("hideout_hex_block"));
5209}
5210
5211/* --- Get offset of first data block. ---
5212 */
5213unsigned long first_hex_block(SL_TICKET fd, unsigned long * max)
5214{
5215 unsigned int i;
5216 long num = 1;
5217 unsigned long lnum;
5218 char c;
5219 int nothex = 0;
5220 unsigned long retval = 0;
5221 unsigned int this_line = 0;
5222 char theline[SH_BUFSIZE];
5223
5224 SL_ENTER(_("first_hex_block"));
5225
5226 *max = 0;
5227
5228 while (1)
5229 {
5230 theline[0] = '\0';
5231 this_line = 0;
5232 c = '\0';
5233 while (c != '\n' && num > 0 && this_line < (sizeof(theline)-1))
5234 {
5235 do {
5236 num = sl_read (fd, &c, 1);
5237 } while (num == 0 && errno == EINTR);
5238 if (num > 0)
5239 theline[this_line] = c;
5240 else
5241 SL_RETURN((0), _("first_hex_block"));
5242 ++this_line;
5243 }
5244 theline[this_line] = '\0';
5245
5246 /* not only 'newline' */
5247 if (this_line > 60)
5248 {
5249 nothex = 0;
5250 i = 0;
5251 while (nothex == 0 && i < (this_line-1))
5252 {
5253 if (! isxdigit((int)theline[i])) nothex = 1;
5254 ++i;
5255 }
5256 if (nothex == 1) retval += this_line;
5257 }
5258 else
5259 {
5260 nothex = 1;
5261 retval += this_line;
5262 }
5263
5264 if (nothex == 0)
5265 {
5266 *max = 0;
5267 do {
5268 do {
5269 num = sl_read (fd, theline, SH_BUFSIZE);
5270 } while (num == 0 && errno == EINTR);
5271 if (num > 0)
5272 {
5273 lnum = (unsigned long) num;
5274 for (i = 0; i < lnum; ++i)
5275 {
5276 c = theline[i];
5277 if (c == '\n' || c == '\t' || c == '\r' || c == ' ')
5278 ;
5279 else if (!isxdigit((int)c))
5280 break;
5281 else
5282 *max += 1;
5283 }
5284 }
5285 } while (num > 0);
5286
5287 *max /= 16;
5288 SL_RETURN((retval), _("first_hex_block"));
5289 }
5290
5291 }
5292 /* SL_RETURN((0), _("first_hex_block")); *//* unreachable */
5293}
5294
5295 /* if !defined(SH_STEALTH_MICRO) */
5296#endif
5297
5298 /* ifdef SH_STEALTH */
5299#endif
5300
5301/*
5302 * anti-debugger code
5303 */
5304#if defined(SCREW_IT_UP)
5305volatile int sh_not_traced = 0;
5306
5307#ifdef HAVE_GETTIMEOFDAY
5308struct timeval save_tv;
5309#endif
5310
5311void sh_sigtrap_handler (int signum)
5312{
5313#ifdef HAVE_GETTIMEOFDAY
5314 struct timeval tv;
5315 long difftv;
5316
5317 gettimeofday(&tv, NULL);
5318 difftv = (tv.tv_sec - save_tv.tv_sec) * 1000000 +
5319 (tv.tv_usec - save_tv.tv_usec);
5320 if (difftv > 500000)
5321 raise(SIGKILL);
5322#endif
5323 sh_not_traced += signum;
5324 return;
5325}
5326#endif
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