source: trunk/src/sh_processcheck.c@ 275

Last change on this file since 275 was 258, checked in by katerina, 15 years ago

Don't use statvfs() for process checking on FreeBSD (ticket #176).
File size: 35.0 KB
Line 
1/* SAMHAIN file system integrity testing */
2/* Copyright (C) 2006 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/***************************************************************************
21 *
22 * This file provides a module for samhain to check for hidden/faked/missing
23 * processes on the host.
24 *
25 */
26
27#include "config_xor.h"
28
29#define _XOPEN_SOURCE 500
30
31#include <stdio.h>
32#include <stdlib.h>
33#include <ctype.h>
34#include <string.h>
35#include <sys/types.h>
36#include <dirent.h>
37#include <sys/stat.h>
38#include <signal.h>
39#include <unistd.h>
40
41#ifdef _POSIX_PRIORITY_SCHEDULING
42#include <sched.h>
43#endif
44
45#ifdef HAVE_GETPRIORITY
46#include <errno.h>
47#include <sys/resource.h>
48#endif
49
50#ifdef HAVE_SYS_STATVFS_H
51#include <sys/statvfs.h>
52#endif
53
54
55#ifdef HAVE_REGEX_H
56#include <regex.h>
57#endif
58
59#include "samhain.h"
60#include "sh_modules.h"
61#include "sh_processcheck.h"
62#include "sh_utils.h"
63#include "sh_error.h"
64#include "sh_extern.h"
65#include "sh_calls.h"
66#include "sh_pthread.h"
67
68#ifdef SH_USE_PROCESSCHECK
69
70#define FIL__ _("sh_processcheck.c")
71
72#ifdef __linux__
73#define PS_THREADS
74#endif
75
76/* We won't want to build this into yule
77 */
78#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
79
80SH_MUTEX_STATIC(mutex_proc_check, PTHREAD_MUTEX_INITIALIZER);
81
82/* sh_prochk_maxpid is one more than the largest pid
83 */
84static size_t sh_prochk_minpid = 0x0001;
85static size_t sh_prochk_maxpid = 0x8000;
86static size_t sh_prochk_size = 0;
87
88static int ShProchkActive = S_TRUE;
89static short * sh_prochk_res = NULL;
90
91static char * sh_prochk_pspath = NULL;
92static char * sh_prochk_psarg = NULL;
93
94#define SH_PROCHK_INTERVAL 300
95static time_t sh_prochk_interval = SH_PROCHK_INTERVAL;
96static int sh_prochk_severity = SH_ERR_SEVERE;
97static int sh_prochk_openvz = S_FALSE;
98
99static int sh_prochk_set_maxpid (const char * str);
100static int sh_prochk_set_minpid (const char * str);
101static int sh_prochk_set_active (const char *str);
102static int sh_prochk_add_process (const char *str);
103static int sh_prochk_set_pspath (const char *str);
104static int sh_prochk_set_psarg (const char *str);
105static int sh_prochk_set_interval(const char *str);
106static int sh_prochk_set_severity(const char *str);
107static int sh_prochk_set_openvz (const char *str);
108
109sh_rconf sh_prochk_table[] = {
110 {
111 N_("severityprocesscheck"),
112 sh_prochk_set_severity,
113 },
114 {
115 N_("processcheckexists"),
116 sh_prochk_add_process,
117 },
118 {
119 N_("processcheckactive"),
120 sh_prochk_set_active,
121 },
122 {
123 N_("processcheckminpid"),
124 sh_prochk_set_minpid,
125 },
126 {
127 N_("processcheckmaxpid"),
128 sh_prochk_set_maxpid,
129 },
130 {
131 N_("processcheckpspath"),
132 sh_prochk_set_pspath,
133 },
134 {
135 N_("processcheckpsarg"),
136 sh_prochk_set_psarg,
137 },
138 {
139 N_("processcheckinterval"),
140 sh_prochk_set_interval,
141 },
142 {
143 N_("processcheckisopenvz"),
144 sh_prochk_set_openvz,
145 },
146 {
147 NULL,
148 NULL
149 }
150};
151
152#define SH_PROC_MISSING 1
153#define SH_PROC_FAKED 2
154#define SH_PROC_HIDDEN 4
155#define SH_PROC_EXISTS 8
156
157#ifndef HAVE_LSTAT
158#define lstat(x,y) stat(x,y)
159#endif /* HAVE_LSTAT */
160
161#if defined(S_IFLNK) && !defined(S_ISLNK)
162#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
163#else
164#if !defined(S_ISLNK)
165#define S_ISLNK(mode) (0)
166#endif
167#endif
168
169static const short SH_PR_PS = 0x0001;
170
171static const short SH_PR_GETSID = 0x0002;
172static const short SH_PR_KILL = 0x0004;
173static const short SH_PR_GETPGID = 0x0008;
174
175static const short SH_PR_LSTAT = 0x0010;
176static const short SH_PR_OPENDIR = 0x0020;
177static const short SH_PR_CHDIR = 0x0040;
178static const short SH_PR_SCHED = 0x0080;
179
180static const short SH_PR_PRIORITY = 0x0100;
181static const short SH_PR_STATVSF = 0x0200;
182
183static const short SH_PR_PS2 = 0x1000;
184static const short SH_PR_PS_ANY = 0x2000;
185static const short SH_PR_ALL = 0x4000;
186static const short SH_PR_ANY = 0x8000;
187
188/* /proc:
189 * linux: /proc/pid/exe
190 * freebsd: /proc/pid/file
191 * solaris10: /proc/pid/path/a.out
192 */
193static char * get_user_and_path (pid_t pid, char * user, size_t usrlen)
194{
195 extern char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len);
196
197 char path[128];
198 char * buf;
199 struct stat sbuf;
200 int len;
201 char * tmp;
202
203 sl_snprintf (path, sizeof(path), _("/proc/%ld/exe"), (unsigned long) pid);
204
205 if (0 == retry_lstat(FIL__, __LINE__, path, &sbuf) && S_ISLNK(sbuf.st_mode))
206 {
207 goto linkread;
208 }
209
210 sl_snprintf (path, sizeof(path), _("/proc/%ld/file"), (unsigned long) pid);
211
212 if (0 == retry_lstat(FIL__, __LINE__, path, &sbuf) && S_ISLNK(sbuf.st_mode))
213 {
214 goto linkread;
215 }
216
217 sl_snprintf (path, sizeof(path), _("/proc/%ld/path/a.out"), (unsigned long) pid);
218
219 if (0 == retry_lstat(FIL__, __LINE__, path, &sbuf) && S_ISLNK(sbuf.st_mode))
220 {
221 goto linkread;
222 }
223
224 return NULL;
225
226 linkread:
227
228 buf = SH_ALLOC(PATH_MAX);
229 len = readlink(path, buf, PATH_MAX); /* flawfinder: ignore */
230 len = (len >= PATH_MAX) ? (PATH_MAX-1) : len;
231
232 if (len > 0)
233 {
234 buf[len] = '\0';
235 }
236 else
237 {
238 SH_FREE(buf);
239 return NULL;
240 }
241
242 tmp = sh_unix_getUIDname (SH_ERR_ALL, sbuf.st_uid, user, usrlen);
243
244 if (!tmp)
245 sl_snprintf (user, usrlen, "%ld", (unsigned long) sbuf.st_uid);
246
247 return buf;
248}
249
250
251struct watchlist {
252 char * str;
253 unsigned long pid;
254#ifdef HAVE_REGEX_H
255 regex_t preg;
256#endif
257 int seen;
258
259 struct watchlist *next;
260};
261
262static struct watchlist * process_check = NULL;
263
264static struct watchlist * list_missing = NULL;
265static struct watchlist * list_fake = NULL;
266static struct watchlist * list_hidden = NULL;
267
268/* recursively remove all list entries
269 */
270static void kill_list (struct watchlist * head)
271{
272 if (head->next)
273 kill_list (head->next);
274
275 if (head->str)
276 SH_FREE(head->str);
277 SH_FREE(head);
278
279 return;
280}
281
282
283/* check the list for old entries; clean out old entries; reset others
284 * Return number of non-obsolete entries
285 */
286static size_t clean_list (struct watchlist ** head_ptr)
287{
288 size_t count = 0;
289 struct watchlist * ptr = *head_ptr;
290 struct watchlist * pre = *head_ptr;
291
292 while (ptr)
293 {
294 if (ptr->seen == S_FALSE) /* obsolete entry */
295 {
296 if (ptr == pre) /* at head */
297 {
298 ptr = pre->next;
299 *head_ptr = pre->next;
300 if (pre->str)
301 SH_FREE(pre->str);
302 SH_FREE(pre);
303 pre = ptr;
304 }
305 else
306 {
307 pre->next = ptr->next;
308 if (ptr->str)
309 SH_FREE(ptr->str);
310 SH_FREE(ptr);
311 ptr = pre->next;
312 }
313 }
314 else
315 {
316 ++count;
317 ptr->seen = S_FALSE; /* reset status */
318 pre = ptr;
319 ptr = ptr->next;
320 }
321 }
322 return count;
323}
324
325/* check if process is in list; if not, add it and return false
326 */
327static int is_in_list (struct watchlist ** head_ptr,
328 char * str, unsigned long pid)
329{
330 struct watchlist * ptr = *head_ptr;
331
332 if (str)
333 {
334 while (ptr)
335 {
336 if (ptr->str && (0 == strcmp(str, ptr->str)))
337 {
338 ptr->seen = S_TRUE;
339 return S_TRUE;
340 }
341 ptr = ptr->next;
342 }
343 }
344 else
345 {
346 while (ptr)
347 {
348 if (ptr->pid == pid)
349 {
350 ptr->seen = S_TRUE;
351 return S_TRUE;
352 }
353 ptr = ptr->next;
354 }
355 }
356
357 ptr = SH_ALLOC(sizeof(struct watchlist));
358
359 if (str)
360 {
361 ptr->str = sh_util_strdup(str);
362 }
363 else
364 {
365 ptr->str = NULL;
366 ptr->pid = pid;
367 }
368 ptr->next = *head_ptr;
369 ptr->seen = S_TRUE;
370 *head_ptr = ptr;
371
372 return S_FALSE;
373}
374
375static int is_in_watchlist (const char *str, unsigned long num)
376{
377 struct watchlist * list = process_check;
378
379 while (list)
380 {
381#ifdef HAVE_REGEX_H
382 if (0 == regexec(&(list->preg), str, 0, NULL, 0))
383 {
384 list->seen = S_TRUE;
385 list->pid = num;
386 return S_TRUE;
387 }
388#else
389 if (strstr(str, list->str))
390 {
391 list->seen = S_TRUE;
392 list->pid = num;
393 return S_TRUE;
394 }
395#endif
396 list = list->next;
397 }
398 return S_FALSE;
399}
400
401/* These variables are not used anywhere. They only exist
402 * to assign &userold, &user to them, which keeps gcc from
403 * putting them into a register, and avoids the 'clobbered
404 * by longjmp' warning. And no, 'volatile' proved insufficient.
405 */
406static void * sh_dummy_watchlist = NULL;
407
408static void check_watchlist (short * res)
409{
410 struct watchlist * list = process_check;
411 char * tmp;
412 size_t indx;
413
414 /* Take the address to keep gcc from putting them into registers.
415 * Avoids the 'clobbered by longjmp' warning.
416 */
417 sh_dummy_watchlist = (void*) &list;
418
419 while (list)
420 {
421 if (list->seen == S_FALSE)
422 {
423 /* avoid repetition of messages
424 */
425 if (S_FALSE == is_in_list(&list_missing, list->str, 0))
426 {
427 SH_MUTEX_LOCK(mutex_thread_nolog);
428 tmp = sh_util_safe_name (list->str);
429 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
430 MSG_PCK_MISS,
431 tmp);
432 SH_FREE(tmp);
433 SH_MUTEX_UNLOCK(mutex_thread_nolog);
434 }
435 }
436 else
437 {
438 indx = list->pid - sh_prochk_minpid;
439
440 if (list->pid < sh_prochk_maxpid && list->pid >= sh_prochk_minpid &&
441 ((res[indx] & SH_PR_ANY) == 0) && /* not found */
442 ((res[indx] & SH_PR_PS) != 0) && /* seen in first ps */
443 ((res[indx] & SH_PR_PS2) != 0)) /* seen in second ps */
444 {
445 /* fake process, thus considered missing
446 */
447 if (S_FALSE == is_in_list(&list_missing, list->str, 0))
448 {
449 SH_MUTEX_LOCK(mutex_thread_nolog);
450 tmp = sh_util_safe_name (list->str);
451 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
452 MSG_PCK_MISS,
453 tmp);
454 SH_FREE(tmp);
455 SH_MUTEX_UNLOCK(mutex_thread_nolog);
456 }
457 }
458 list->seen = S_FALSE;
459 }
460 list = list->next;
461 }
462}
463
464/* Add 'str' to the list of watched processes for which
465 * existence should be checked.
466 */
467int sh_prochk_add_process (const char *str)
468{
469 struct watchlist *new;
470 int status;
471 char errbuf[256];
472
473 SL_ENTER(_("sh_prochk_add_process"));
474
475 if( str == NULL )
476 SL_RETURN(-1, _("sh_prochk_add_process") );
477
478 new = SH_ALLOC(sizeof(struct watchlist));
479 new->next = process_check;
480 new->str = sh_util_strdup(str);
481#ifdef HAVE_REGEX_H
482 status = regcomp(&(new->preg), str, REG_NOSUB|REG_EXTENDED);
483 if (status != 0)
484 {
485 regerror(status, &(new->preg), errbuf, sizeof(errbuf));
486 SH_MUTEX_LOCK(mutex_thread_nolog);
487 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
488 errbuf, _("sh_processes_add_process"));
489 SH_MUTEX_UNLOCK(mutex_thread_nolog);
490 SH_FREE(new->str);
491 SH_FREE(new);
492 SL_RETURN(-1, _("sh_prochk_add_process") );
493 }
494#endif
495 new->pid = 0;
496 new->seen = S_FALSE;
497
498 process_check = new;
499 SL_RETURN(0, _("sh_prochk_add_process") );
500}
501
502/* severity
503 */
504int sh_prochk_set_severity (const char * c)
505{
506 char tmp[32];
507 tmp[0] = '='; tmp[1] = '\0';
508 sl_strlcat (tmp, c, 32);
509 return sh_error_set_level (tmp, &sh_prochk_severity);
510}
511
512
513
514/* Path to ps
515 */
516int sh_prochk_set_pspath(const char *str)
517{
518 SL_ENTER(_("sh_prochk_set_pspath"));
519
520 if (!str && ('/' != str[0]))
521 SL_RETURN((-1), _("sh_prochk_set_pspath"));
522 if (sh_prochk_pspath)
523 SH_FREE(sh_prochk_pspath);
524 sh_prochk_pspath = sh_util_strdup (str);
525
526 SL_RETURN((0), _("sh_prochk_set_pspath"));
527
528}
529
530/* argument for ps
531 */
532int sh_prochk_set_psarg(const char *str)
533{
534 SL_ENTER(_("sh_prochk_set_psarg"));
535
536 if (sh_prochk_psarg)
537 SH_FREE(sh_prochk_psarg);
538 sh_prochk_psarg = sh_util_strdup (str);
539
540 SL_RETURN((0), _("sh_prochk_set_psarg"));
541
542}
543
544
545/* Decide if we're active.
546 */
547int sh_prochk_set_active(const char *str)
548{
549 int value;
550
551 SL_ENTER(_("sh_prochk_set_active"));
552
553 value = sh_util_flagval(str, &ShProchkActive);
554
555 SL_RETURN((value), _("sh_prochk_set_active"));
556}
557
558/* Are we on openvz.
559 */
560static int openvz_hidden = 0;
561
562int sh_prochk_set_openvz(const char *str)
563{
564 int value;
565
566 SL_ENTER(_("sh_prochk_set_openvz"));
567
568 value = sh_util_flagval(str, &sh_prochk_openvz);
569
570 if (sh_prochk_openvz != S_FALSE) {
571 openvz_hidden = 1;
572 }
573
574 SL_RETURN((value), _("sh_prochk_set_openvz"));
575}
576
577/* Minimum PID
578 */
579int sh_prochk_set_minpid(const char * str)
580{
581 size_t value;
582 char * foo;
583 int retval = 0;
584
585 SL_ENTER(_("sh_prochk_set_minpid"));
586
587 value = (size_t) strtoul(str, &foo, 0);
588 if (*foo != '\0')
589 retval = -1;
590 else
591 sh_prochk_minpid = value;
592
593 SL_RETURN((retval), _("sh_prochk_set_minpid"));
594}
595
596/* Maximum PID
597 */
598static int userdef_maxpid = 0;
599
600int sh_prochk_set_maxpid(const char * str)
601{
602 size_t value;
603 char * foo;
604 int retval = -1;
605
606 SL_ENTER(_("sh_prochk_set_maxpid"));
607
608 value = (size_t) strtoul(str, &foo, 0);
609
610 if (*foo == '\0' && SL_TRUE == sl_ok_adds(value, 1)) {
611 sh_prochk_maxpid = value + 1;
612 userdef_maxpid = 1;
613 }
614
615 SL_RETURN((retval), _("sh_prochk_set_maxpid"));
616}
617
618int sh_prochk_set_interval (const char * c)
619{
620 int retval = 0;
621 long val;
622
623 SL_ENTER(_("sh_prochk_set_interval"));
624 val = strtol (c, (char **)NULL, 10);
625 if (val <= 0)
626 {
627 SH_MUTEX_LOCK(mutex_thread_nolog);
628 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
629 _("process check interval"), c);
630 SH_MUTEX_UNLOCK(mutex_thread_nolog);
631 retval = -1;
632 }
633
634 sh_prochk_interval = (time_t) val;
635 SL_RETURN(0, _("sh_prochk_set_interval"));
636}
637
638
639
640/* Recurse to the end of the list and then free the data as we return
641 * back up towards the start, making sure to free any strdupped strings
642 */
643static void sh_prochk_free_list(struct watchlist *head)
644{
645 if ( head != NULL )
646 {
647 sh_prochk_free_list(head->next);
648 if (head->str)
649 SH_FREE(head->str);
650#ifdef HAVE_REGEX_H
651 regfree(&(head->preg));
652#endif
653 SH_FREE(head);
654 }
655 return;
656}
657
658#if defined(__linux__)
659#define PROC_PID_MAX _("/proc/sys/kernel/pid_max")
660
661static int proc_max_pid (size_t * procpid)
662{
663 char * ret;
664 unsigned long pid;
665 FILE * fd;
666 char str[128];
667 char * ptr;
668
669 SL_ENTER(_("proc_max_pid"));
670
671 if (userdef_maxpid != 0)
672 SL_RETURN((-1), _("proc_max_pid"));
673
674 if (0 == access(PROC_PID_MAX, R_OK)) /* flawfinder: ignore */
675 {
676 if (NULL != (fd = fopen(PROC_PID_MAX, "r")))
677 {
678 str[0] = '\0';
679 ret = fgets(str, 128, fd);
680 if (ret && *str != '\0')
681 {
682 pid = strtoul(str, &ptr, 0);
683 if (*ptr == '\0' || *ptr == '\n')
684 {
685 sl_fclose(FIL__, __LINE__, fd);
686 *procpid = (size_t) pid;
687 SL_RETURN(0, _("proc_max_pid"));
688 }
689 }
690 sl_fclose(FIL__, __LINE__, fd);
691 }
692 }
693 SL_RETURN((-1), _("proc_max_pid"));
694}
695#else
696static int proc_max_pid(size_t * dummy)
697{
698 (void) dummy;
699 return -1;
700}
701#endif
702
703static void sh_processes_tlist (char * list, size_t len, short res)
704{
705 if (res & SH_PR_PS) sl_strlcat(list, _(" ps(initial)"), len);
706 if (res & SH_PR_CHDIR) sl_strlcat(list, _(" chdir"), len);
707 if (res & SH_PR_OPENDIR) sl_strlcat(list, _(" opendir"), len);
708 if (res & SH_PR_LSTAT) sl_strlcat(list, _(" lstat"), len);
709 if (res & SH_PR_PRIORITY) sl_strlcat(list, _(" getpriority"), len);
710 if (res & SH_PR_SCHED) sl_strlcat(list, _(" sched_getparam"), len);
711 if (res & SH_PR_GETSID) sl_strlcat(list, _(" getsid"), len);
712 if (res & SH_PR_GETPGID) sl_strlcat(list, _(" getpgid"), len);
713 if (res & SH_PR_KILL) sl_strlcat(list, _(" kill"), len);
714 if (res & SH_PR_STATVSF) sl_strlcat(list, _(" statvfs"), len);
715 if (res & SH_PR_PS2) sl_strlcat(list, _(" ps(final)"), len);
716 return;
717}
718
719
720static short sh_processes_check (pid_t pid, short res)
721{
722 int have_checks = 0;
723 int need_checks = 0;
724#ifdef HAVE_PROCFS
725 char path[128];
726 struct stat buf;
727 DIR * dir;
728 int retval;
729#if defined(HAVE_STATVFS) && !defined(__FreeBSD__)
730 struct statvfs vfsbuf;
731#endif
732#endif
733
734#if !defined(sun) && !defined(__sun) && !defined(__sun__)
735#ifdef _POSIX_PRIORITY_SCHEDULING
736 struct sched_param p;
737#endif
738#endif
739
740 if (0 == kill(pid, 0))
741 {
742 res |= SH_PR_KILL; res |= SH_PR_ANY; ++have_checks;
743 ++need_checks;
744 }
745 else if (errno != EPERM)
746 {
747 ++need_checks;
748 }
749
750
751#ifdef HAVE_GETPGID
752 if ((pid_t)-1 != getpgid(pid))
753 {
754 res |= SH_PR_GETPGID; res |= SH_PR_ANY; ++have_checks;
755 }
756 ++need_checks;
757#endif
758
759#ifdef HAVE_GETSID
760 if ((pid_t)-1 != getsid(pid))
761 {
762 res |= SH_PR_GETSID; res |= SH_PR_ANY; ++have_checks;
763 }
764 ++need_checks;
765#endif
766
767 /* sched_getparam() is broken on solaris 10, may segfault in librt
768 */
769#if !defined(sun) && !defined(__sun) && !defined(__sun__)
770#ifdef _POSIX_PRIORITY_SCHEDULING
771 if (0 == sched_getparam (pid, &p))
772 {
773 res |= SH_PR_SCHED; res |= SH_PR_ANY; ++have_checks;
774 }
775 ++need_checks;
776#endif
777#endif
778
779#ifdef HAVE_GETPRIORITY
780 errno = 0;
781 if (((-1) == getpriority (PRIO_PROCESS, (int) pid)) && (errno == ESRCH));
782 else
783 {
784 res |= SH_PR_PRIORITY; res |= SH_PR_ANY; ++have_checks;
785 }
786 ++need_checks;
787#endif
788
789#ifdef HAVE_PROCFS
790 sl_snprintf (path, sizeof(path), "/proc/%ld", (unsigned long) pid);
791
792 do {
793 retval = lstat (path, &buf);
794 } while (retval < 0 && errno == EINTR);
795
796 if (0 == retval)
797 {
798 res |= SH_PR_LSTAT; res |= SH_PR_ANY; ++have_checks;
799 }
800 ++need_checks;
801
802 if (NULL != (dir = opendir(path)))
803 {
804 res |= SH_PR_OPENDIR; res |= SH_PR_ANY; ++have_checks;
805 closedir(dir);
806 }
807 ++need_checks;
808
809#if defined(HAVE_STATVFS) && !defined(__FreeBSD__)
810 do {
811 retval = statvfs (path, &vfsbuf);
812 } while (retval < 0 && errno == EINTR);
813
814 if (0 == retval)
815 {
816 res |= SH_PR_STATVSF; res |= SH_PR_ANY; ++have_checks;
817 }
818 ++need_checks;
819#endif
820
821#if !defined(SH_PROFILE)
822 if (0 == chdir(path))
823 {
824 res |= SH_PR_CHDIR; res |= SH_PR_ANY; ++have_checks;
825 do {
826 retval = chdir ("/");
827 } while (retval < 0 && errno == EINTR);
828 }
829 ++need_checks;
830#endif
831#endif
832
833 if (have_checks == need_checks)
834 {
835 res |= SH_PR_ALL;
836 }
837 return res;
838}
839
840extern int flag_err_debug;
841
842static int sh_processes_readps (FILE * in, short * res,
843 char * str, size_t len,
844 short flag, pid_t pid)
845{
846 int cc;
847 unsigned int lnum = 0;
848 unsigned long num = 0;
849 char c;
850 unsigned int pos = 0;
851 char tstr[256];
852 enum { SKIP_TO_WS, SKIP_WS, SKIP_TO_WS2, SKIP_WS2, GET_NUM, SKIP_END, GET_NUM2 } line;
853
854 SL_ENTER(_("sh_processes_readps"));
855
856 if (!in) {
857 SL_RETURN((-1), _("sh_processes_readps"));
858 }
859
860 tstr[(sizeof(tstr)-1)] = '\0';
861 tstr[0] = '\0';
862 line = SKIP_END; /* Skip 1st line */
863
864 do
865 {
866 cc = fgetc(in);
867
868 if (EOF == cc)
869 {
870 if (feof(in))
871 {
872 break;
873 }
874 else if (errno == EAGAIN)
875 {
876 clearerr(in);
877 continue;
878 }
879#ifdef HOST_IS_OPENBSD
880 else if (errno == ENODEV)
881 {
882 clearerr(in);
883 continue;
884 }
885#endif
886 else
887 {
888 char errbuf[SH_ERRBUF_SIZE];
889
890 /* SH_MUTEX_LOCK(mutex_thread_nolog) is in caller */
891 sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, errno, MSG_E_SUBGEN,
892 sh_error_message(errno, errbuf, sizeof(errbuf)),
893 _("sh_processes_readps"));
894 break;
895 }
896 }
897
898 c = (char) cc;
899
900 if (pos < (sizeof(tstr)-1))
901 {
902 tstr[pos] = c; ++pos;
903 }
904
905 switch(line)
906 {
907 case SKIP_END:
908 if (c == '\n')
909 {
910 tstr[pos-1] = '\0';
911 if (flag_err_debug == SL_TRUE)
912 {
913 /* SH_MUTEX_LOCK(mutex_thread_nolog) is in caller */
914 sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, num,
915 MSG_E_SUBGEN,
916 tstr,
917 _("sh_processes_readps"));
918 }
919 /* fprintf(stderr, "<%ld> %s\n", num, tstr); */
920 line = SKIP_WS; pos = 0;
921 if (str != NULL && num == (unsigned long) pid)
922 sl_strlcpy(str, tstr, len);
923 if (lnum != 0)
924 is_in_watchlist (tstr, num);
925 ++lnum;
926 }
927 break;
928 case SKIP_TO_WS:
929 if (!isspace(cc))
930 break;
931 line = SKIP_WS;
932 /* fallthrough */
933 case SKIP_WS:
934 if (isspace(cc))
935 break;
936 num = 0;
937 line = GET_NUM;
938 /* fallthrough */
939 case GET_NUM:
940 if (isdigit(cc))
941 {
942 num = num * 10 + (c - '0');
943 break;
944 }
945 else if (isspace(cc))
946 {
947#ifdef PS_THREADS
948 num = 0;
949 line = SKIP_WS2;
950#else
951 if (num < sh_prochk_maxpid && num >= sh_prochk_minpid)
952 {
953 res[num - sh_prochk_minpid] |= flag;
954 }
955 line = SKIP_END;
956#endif
957 break;
958 }
959 else
960 {
961 line = SKIP_TO_WS;
962 break;
963 }
964 case SKIP_TO_WS2:
965 if (!isspace(cc))
966 break;
967 line = SKIP_WS2;
968 /* fallthrough */
969 case SKIP_WS2:
970 if (isspace(cc))
971 break;
972 num = 0;
973 line = GET_NUM2;
974 /* fallthrough */
975 case GET_NUM2:
976 if (isdigit(cc))
977 {
978 num = num * 10 + (c - '0');
979 break;
980 }
981 else if (isspace(cc))
982 {
983 if (num < sh_prochk_maxpid && num >= sh_prochk_minpid)
984 {
985 res[num - sh_prochk_minpid] |= flag;
986 }
987 line = SKIP_END;
988 break;
989 }
990 else
991 {
992 line = SKIP_TO_WS2;
993 break;
994 }
995 default:
996 SL_RETURN ((-1), _("sh_processes_readps"));
997 }
998 } while (1);
999
1000 if (ferror(in))
1001 {
1002 SL_RETURN ((-1), _("sh_processes_readps"));
1003 }
1004
1005 SL_RETURN ((0), _("sh_processes_readps"));
1006}
1007
1008static int sh_processes_runps (short * res, char * str, size_t len,
1009 short flag, pid_t pid)
1010{
1011 sh_tas_t task;
1012
1013 int status = 0;
1014 char * p;
1015 struct sigaction new_act;
1016 struct sigaction old_act;
1017 int retval = 0;
1018 char dir[SH_PATHBUF];
1019
1020 SL_ENTER(_("sh_processes_runps"));
1021
1022 sh_ext_tas_init(&task);
1023 p = sh_unix_getUIDdir (SH_ERR_ERR, task.run_user_uid, dir, sizeof(dir));
1024 if (p)
1025 {
1026 (void) sh_ext_tas_add_envv (&task, _("HOME"), p);
1027 }
1028 (void) sh_ext_tas_add_envv (&task, _("SHELL"),
1029 _("/bin/sh"));
1030 (void) sh_ext_tas_add_envv (&task, _("PATH"),
1031 _("/sbin:/usr/sbin:/bin:/usr/bin"));
1032 if (sh.timezone != NULL)
1033 {
1034 (void) sh_ext_tas_add_envv(&task, "TZ", sh.timezone);
1035 }
1036
1037 if (!sh_prochk_pspath)
1038 sh_ext_tas_command(&task, PSPATH);
1039 else
1040 sh_ext_tas_command(&task, sh_prochk_pspath);
1041
1042 (void) sh_ext_tas_add_argv(&task, _("ps"));
1043
1044 if (!sh_prochk_psarg)
1045 {
1046#ifdef PS_THREADS
1047 (void) sh_ext_tas_add_argv(&task, _("-eT"));
1048#else
1049 (void) sh_ext_tas_add_argv(&task, PSARG);
1050#endif
1051 }
1052 else
1053 {
1054 (void) sh_ext_tas_add_argv(&task, sh_prochk_psarg);
1055 }
1056
1057 task.rw = 'r';
1058 task.fork_twice = S_FALSE;
1059
1060 status = sh_ext_popen(&task);
1061 if (status != 0)
1062 {
1063 /* SH_MUTEX_LOCK(mutex_thread_nolog) is in caller */
1064 sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, status, MSG_E_SUBGEN,
1065 _("Could not open pipe"), _("sh_processes_runps"));
1066 SL_RETURN ((-1), _("sh_processes_runps"));
1067 }
1068
1069 /* ignore SIGPIPE (instead get EPIPE if connection is closed)
1070 */
1071 new_act.sa_handler = SIG_IGN;
1072 (void) retry_sigaction (FIL__, __LINE__, SIGPIPE, &new_act, &old_act);
1073
1074 /* read from the open pipe
1075 */
1076 if (task.pipe != NULL)
1077 {
1078 retval = sh_processes_readps (task.pipe, res, str, len, flag, pid);
1079 }
1080
1081 /* restore old signal handler
1082 */
1083 (void) retry_sigaction (FIL__, __LINE__, SIGPIPE, &old_act, NULL);
1084
1085 /* close pipe and return exit status
1086 */
1087 (void) sh_ext_pclose(&task);
1088 sh_ext_tas_free (&task);
1089 SL_RETURN ((retval), _("sh_processes_runps"));
1090}
1091
1092/* Check whether there is a visible process
1093 * with PID = i + 1024
1094 */
1095static size_t p_store = 0;
1096
1097static int openvz_ok(short * res, size_t i)
1098{
1099
1100 if (sh_prochk_openvz == S_FALSE) {
1101 return 0;
1102 }
1103
1104 i += 1024;
1105
1106 if (i >= sh_prochk_size) {
1107 return 0;
1108 }
1109
1110 if ( ((res[i] & SH_PR_PS) || (res[i] & SH_PR_PS2)) && (res[i] & SH_PR_ANY))
1111 {
1112 /* This is a system process corresponding to a 'virtual'
1113 * process that has a PID offset by 1024
1114 */
1115 return 1;
1116 }
1117
1118 if (openvz_hidden > 0)
1119 {
1120 p_store = i;
1121 --openvz_hidden;
1122 return 1;
1123 }
1124 else if (i == p_store)
1125 {
1126 return 1;
1127 }
1128
1129 return 0;
1130}
1131
1132static int sh_process_check_int (short * res)
1133{
1134 volatile size_t i;
1135 size_t j;
1136 char tests[512];
1137 volatile int retval;
1138
1139 pid_t this_pid;
1140
1141 SL_ENTER(_("sh_process_check_int"));
1142
1143 this_pid = getpid();
1144
1145 if (!res)
1146 {
1147 SH_MUTEX_LOCK(mutex_thread_nolog);
1148 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_SUBGEN,
1149 _("Internal error: NULL argument, switching off"),
1150 _("sh_process_check_int"));
1151 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1152 SL_RETURN ((-1), _("sh_process_check_int"));
1153 }
1154
1155 SH_MUTEX_LOCK(mutex_thread_nolog);
1156 retval = sh_processes_runps (res, NULL, 0, SH_PR_PS, 0);
1157 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1158 for (i = sh_prochk_minpid; i != sh_prochk_maxpid; ++i)
1159 {
1160 j = i - sh_prochk_minpid;
1161 res[j] = sh_processes_check ((pid_t) i, res[j]);
1162 }
1163 SH_MUTEX_LOCK(mutex_thread_nolog);
1164 retval += sh_processes_runps (res, NULL, 0, SH_PR_PS2, 0);
1165 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1166
1167 if (retval != 0)
1168 {
1169 SH_MUTEX_LOCK(mutex_thread_nolog);
1170 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_SUBGEN,
1171 _("Failed to run ps, switching off"),
1172 _("sh_process_check_int"));
1173 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1174 SL_RETURN ((-1), _("sh_process_check_int"));
1175 }
1176
1177 /* Evaluate results
1178 */
1179 for (i = sh_prochk_minpid; i != sh_prochk_maxpid; ++i)
1180 {
1181 /* don't check the current process
1182 */
1183 if (i == (size_t) this_pid)
1184 continue;
1185
1186 j = i - sh_prochk_minpid;
1187
1188 if (((res[j] & SH_PR_PS) != 0) || ((res[j] & SH_PR_PS2) != 0))
1189 {
1190 res[j] |= SH_PR_PS_ANY;
1191 }
1192 else
1193 {
1194 res[j] &= ~SH_PR_PS_ANY;
1195 }
1196
1197 tests[0] = '\0';
1198
1199 if ((res[j] & SH_PR_ANY) || (res[j] & SH_PR_PS_ANY))
1200 {
1201 /* list all tests where the pid was found
1202 */
1203 sh_processes_tlist (tests, sizeof(tests), res[j]);
1204
1205 /*
1206 * case 1: in ps and found
1207 */
1208 if ((res[j] & SH_PR_PS_ANY) && (res[j] & SH_PR_ANY))
1209 {
1210 SH_MUTEX_LOCK(mutex_thread_nolog);
1211 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_PCK_OK,
1212 (unsigned long) i, tests);
1213 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1214 }
1215
1216 /*
1217 * case 2: not in ps and found
1218 */
1219 else if ((res[j] & SH_PR_PS_ANY) == 0)
1220 {
1221 res[j] = sh_processes_check ((pid_t) i, 0);
1222 /*
1223 * if still there, it is real and hidden
1224 */
1225 if ((res[j] & SH_PR_ANY) && !openvz_ok(res, j))
1226 {
1227 if (S_FALSE == is_in_list(&list_hidden, NULL, i))
1228 {
1229 char user[16];
1230 char * aout;
1231 char * safe;
1232
1233 SH_MUTEX_LOCK(mutex_thread_nolog);
1234 aout = get_user_and_path ((pid_t) i, user, sizeof(user));
1235 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1236
1237 if (aout)
1238 {
1239 safe = sh_util_safe_name (aout);
1240 SH_MUTEX_LOCK(mutex_thread_nolog);
1241 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
1242 MSG_PCK_P_HIDDEN,
1243 (unsigned long) i, tests, safe, user);
1244 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1245 SH_FREE(safe);
1246 SH_FREE(aout);
1247 }
1248 else
1249 {
1250 SH_MUTEX_LOCK(mutex_thread_nolog);
1251 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
1252 MSG_PCK_HIDDEN,
1253 (unsigned long) i, tests);
1254 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1255 }
1256 }
1257 }
1258 }
1259
1260 /*
1261 * case 3: in ps, but not found
1262 */
1263 else
1264 {
1265 if (((res[j] & SH_PR_PS) != 0) && ((res[j] & SH_PR_PS2) != 0))
1266 {
1267 if (S_FALSE == is_in_list(&list_fake, NULL, i))
1268 {
1269 SH_MUTEX_LOCK(mutex_thread_nolog);
1270 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
1271 MSG_PCK_FAKE,
1272 (unsigned long) i, tests);
1273 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1274 }
1275 }
1276 }
1277 }
1278 } /* loop end */
1279
1280 check_watchlist (res);
1281
1282 SL_RETURN (0, _("sh_process_check_int"));
1283}
1284
1285/* Initialise.
1286 */
1287static int sh_prochk_init_internal(void)
1288{
1289 SL_ENTER(_("sh_prochk_init"));
1290
1291 (void) proc_max_pid (&sh_prochk_maxpid);
1292
1293 if (sh_prochk_minpid > sh_prochk_maxpid)
1294 ShProchkActive = S_FALSE;
1295
1296 /* We need to free anything allocated by the configuration functions if
1297 * we find that the module is to be left inactive - otherwise _reconf()
1298 * won't quite work.
1299 */
1300 if( ShProchkActive == S_FALSE )
1301 {
1302 sh_prochk_free_list(process_check);
1303 process_check = NULL;
1304 SL_RETURN(-1, _("sh_prochk_init"));
1305 }
1306
1307 sh_prochk_size = sh_prochk_maxpid - sh_prochk_minpid;
1308
1309 sh_prochk_res = SH_ALLOC(sizeof(short) * sh_prochk_size);
1310 memset (sh_prochk_res, 0, sizeof(short) * sh_prochk_size);
1311
1312 SL_RETURN(0, _("sh_prochk_init"));
1313}
1314
1315int sh_prochk_init (struct mod_type * arg)
1316{
1317#ifndef HAVE_PTHREAD
1318 (void) arg;
1319#endif
1320
1321 if (ShProchkActive == S_FALSE)
1322 return SH_MOD_FAILED;
1323#ifdef HAVE_PTHREAD
1324 if (arg != NULL && arg->initval < 0 &&
1325 (sh.flag.isdaemon == S_TRUE || sh.flag.loop == S_TRUE))
1326 {
1327 if (0 == sh_pthread_create(sh_threaded_module_run, (void *)arg))
1328 return SH_MOD_THREAD;
1329 else
1330 return SH_MOD_FAILED;
1331 }
1332#endif
1333 return sh_prochk_init_internal();
1334}
1335
1336int sh_prochk_timer(time_t tcurrent)
1337{
1338 static time_t lastcheck = 0;
1339
1340 SL_ENTER(_("sh_prochk_timer"));
1341 if ((time_t) (tcurrent - lastcheck) >= sh_prochk_interval)
1342 {
1343 lastcheck = tcurrent;
1344 SL_RETURN((-1), _("sh_prochk_timer"));
1345 }
1346 SL_RETURN(0, _("sh_prochk_timer"));
1347}
1348
1349int sh_prochk_check(void)
1350{
1351 int status;
1352
1353 SL_ENTER(_("sh_prochk_check"));
1354
1355 SH_MUTEX_LOCK(mutex_proc_check);
1356
1357 status = 0;
1358
1359 if( ShProchkActive != S_FALSE )
1360 {
1361 SH_MUTEX_LOCK(mutex_thread_nolog);
1362 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_PCK_CHECK,
1363 (unsigned long) sh_prochk_minpid,
1364 (unsigned long) (sh_prochk_maxpid-1));
1365 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1366
1367 if (sh_prochk_res) {
1368 memset (sh_prochk_res, 0, sizeof(short) * sh_prochk_size);
1369 }
1370 status = sh_process_check_int(sh_prochk_res);
1371
1372 if (status != 0)
1373 ShProchkActive = S_FALSE;
1374
1375 /* clean out old entries which are not marked
1376 * as missing/hidden/fake anymore
1377 */
1378 clean_list (&list_missing);
1379 clean_list (&list_hidden);
1380 clean_list (&list_fake);
1381 }
1382
1383 SH_MUTEX_UNLOCK(mutex_proc_check);
1384
1385 SL_RETURN(status, _("sh_prochk_check"));
1386}
1387
1388/* Free our lists and the associated memory
1389 */
1390int sh_prochk_cleanup(void)
1391{
1392 SL_ENTER(_("sh_prochk_cleanup"));
1393
1394 sh_prochk_reconf();
1395
1396 if (list_missing) {
1397 kill_list(list_missing);
1398 list_missing = NULL;
1399 }
1400 if (list_hidden) {
1401 kill_list(list_hidden);
1402 list_hidden = NULL;
1403 }
1404 if (list_fake) {
1405 kill_list(list_fake);
1406 list_fake = NULL;
1407 }
1408
1409 SL_RETURN(0, _("sh_prochk_cleanup"));
1410}
1411
1412/* Free our lists and the associated memory
1413 */
1414int sh_prochk_reconf(void)
1415{
1416 SL_ENTER(_("sh_prochk_reconf"));
1417
1418 SH_MUTEX_LOCK(mutex_proc_check);
1419 userdef_maxpid = 0;
1420 sh_prochk_maxpid = 0x8000;
1421 sh_prochk_minpid = 0x0001;
1422 sh_prochk_interval = SH_PROCHK_INTERVAL;
1423 sh_prochk_openvz = S_FALSE;
1424 p_store = 0;
1425 openvz_hidden = 0;
1426
1427 sh_prochk_free_list(process_check);
1428 process_check = NULL;
1429 if (sh_prochk_res != NULL)
1430 SH_FREE(sh_prochk_res);
1431 sh_prochk_res = NULL;
1432
1433 if (sh_prochk_psarg)
1434 SH_FREE(sh_prochk_psarg);
1435 sh_prochk_psarg = NULL;
1436 if (sh_prochk_pspath)
1437 SH_FREE(sh_prochk_pspath);
1438 sh_prochk_pspath = NULL;
1439 SH_MUTEX_UNLOCK(mutex_proc_check);
1440
1441 SL_RETURN(0, _("sh_prochk_reconf"));
1442}
1443
1444/* #if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE) */
1445#endif
1446
1447/* #ifdef SH_USE_PROCESSCHECK */
1448#endif
1449
1450
1451#ifdef SH_CUTEST
1452#include "CuTest.h"
1453
1454void Test_processcheck_watchlist_ok (CuTest *tc) {
1455#if defined(SH_USE_PROCESSCHECK) && (defined(SH_WITH_CLIENT) || defined(SH_STANDALONE))
1456 CuAssertTrue(tc, 0 == sh_prochk_add_process("init"));
1457 CuAssertTrue(tc,
1458 S_TRUE == is_in_watchlist(" 1 ? 00:00:00 init", 0));
1459 CuAssertTrue(tc,
1460 S_FALSE == is_in_watchlist(" 1 ? 00:00:00 flix", 0));
1461 CuAssertTrue(tc,
1462 S_TRUE == is_in_watchlist("25218 ? SNs 0:01 /usr/sbin/init -k start -DSSL", 0));
1463 CuAssertTrue(tc,
1464 S_FALSE == is_in_watchlist("25218 ? SNs 0:01 /usr/sbin/apache2 -k start -DSSL", 0));
1465
1466
1467 sh_prochk_free_list(process_check);
1468 process_check = NULL;
1469 CuAssertTrue(tc, S_FALSE == is_in_watchlist("init", 0));
1470
1471 CuAssertTrue(tc, 0 == sh_prochk_add_process("init"));
1472 CuAssertTrue(tc, 0 == sh_prochk_add_process("ssh"));
1473 CuAssertTrue(tc, 0 == sh_prochk_add_process("syslog"));
1474 CuAssertTrue(tc, S_TRUE == is_in_watchlist("init", 0));
1475 CuAssertTrue(tc, S_TRUE == is_in_watchlist("ssh", 0));
1476 CuAssertTrue(tc, S_TRUE == is_in_watchlist("syslog", 0));
1477
1478 sh_prochk_free_list(process_check);
1479 process_check = NULL;
1480 CuAssertTrue(tc, S_FALSE == is_in_watchlist("init", 0));
1481 CuAssertTrue(tc, S_FALSE == is_in_watchlist("ssh", 0));
1482 CuAssertTrue(tc, S_FALSE == is_in_watchlist("syslog", 0));
1483#else
1484 (void) tc; /* fix compiler warning */
1485#endif
1486 return;
1487}
1488
1489void Test_processcheck_listhandle_ok (CuTest *tc) {
1490#if defined(SH_USE_PROCESSCHECK) && (defined(SH_WITH_CLIENT) || defined(SH_STANDALONE))
1491 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "init", 0));
1492 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1493 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "foobar", 0));
1494 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1495
1496 if (list_missing)
1497 kill_list(list_missing);
1498 list_missing = NULL;
1499
1500 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "init", 0));
1501 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1502 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "foobar", 0));
1503 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1504
1505 if (list_missing)
1506 kill_list(list_missing);
1507 list_missing = NULL;
1508
1509 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "init", 0));
1510 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1511 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "foobar", 0));
1512 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1513
1514 CuAssertTrue(tc, 2 == clean_list(&list_missing));
1515 CuAssertPtrNotNull(tc, list_missing);
1516
1517 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1518 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1519
1520 CuAssertTrue(tc, 2 == clean_list(&list_missing));
1521 CuAssertPtrNotNull(tc, list_missing);
1522
1523 CuAssertTrue(tc, 0 == clean_list(&list_missing));
1524 CuAssertTrue(tc, NULL == list_missing);
1525#else
1526 (void) tc; /* fix compiler warning */
1527#endif
1528 return;
1529}
1530
1531
1532/* #ifdef SH_CUTEST */
1533#endif
1534
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