source: trunk/src/sh_processcheck.c@ 321

Last change on this file since 321 was 290, checked in by katerina, 14 years ago

Fixes for tickets #215, #216, #217, #218, version bumped to 2.7.2
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 retval = 0;
614 }
615
616 SL_RETURN((retval), _("sh_prochk_set_maxpid"));
617}
618
619int sh_prochk_set_interval (const char * c)
620{
621 int retval = 0;
622 long val;
623
624 SL_ENTER(_("sh_prochk_set_interval"));
625 val = strtol (c, (char **)NULL, 10);
626 if (val <= 0)
627 {
628 SH_MUTEX_LOCK(mutex_thread_nolog);
629 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
630 _("process check interval"), c);
631 SH_MUTEX_UNLOCK(mutex_thread_nolog);
632 retval = -1;
633 }
634
635 sh_prochk_interval = (time_t) val;
636 SL_RETURN(0, _("sh_prochk_set_interval"));
637}
638
639
640
641/* Recurse to the end of the list and then free the data as we return
642 * back up towards the start, making sure to free any strdupped strings
643 */
644static void sh_prochk_free_list(struct watchlist *head)
645{
646 if ( head != NULL )
647 {
648 sh_prochk_free_list(head->next);
649 if (head->str)
650 SH_FREE(head->str);
651#ifdef HAVE_REGEX_H
652 regfree(&(head->preg));
653#endif
654 SH_FREE(head);
655 }
656 return;
657}
658
659#if defined(__linux__)
660#define PROC_PID_MAX _("/proc/sys/kernel/pid_max")
661
662static int proc_max_pid (size_t * procpid)
663{
664 char * ret;
665 unsigned long pid;
666 FILE * fd;
667 char str[128];
668 char * ptr;
669
670 SL_ENTER(_("proc_max_pid"));
671
672 if (userdef_maxpid != 0)
673 SL_RETURN((-1), _("proc_max_pid"));
674
675 if (0 == access(PROC_PID_MAX, R_OK)) /* flawfinder: ignore */
676 {
677 if (NULL != (fd = fopen(PROC_PID_MAX, "r")))
678 {
679 str[0] = '\0';
680 ret = fgets(str, 128, fd);
681 if (ret && *str != '\0')
682 {
683 pid = strtoul(str, &ptr, 0);
684 if (*ptr == '\0' || *ptr == '\n')
685 {
686 sl_fclose(FIL__, __LINE__, fd);
687 *procpid = (size_t) pid;
688 SL_RETURN(0, _("proc_max_pid"));
689 }
690 }
691 sl_fclose(FIL__, __LINE__, fd);
692 }
693 }
694 SL_RETURN((-1), _("proc_max_pid"));
695}
696#else
697static int proc_max_pid(size_t * dummy)
698{
699 (void) dummy;
700 return -1;
701}
702#endif
703
704static void sh_processes_tlist (char * list, size_t len, short res)
705{
706 if (res & SH_PR_PS) sl_strlcat(list, _(" ps(initial)"), len);
707 if (res & SH_PR_CHDIR) sl_strlcat(list, _(" chdir"), len);
708 if (res & SH_PR_OPENDIR) sl_strlcat(list, _(" opendir"), len);
709 if (res & SH_PR_LSTAT) sl_strlcat(list, _(" lstat"), len);
710 if (res & SH_PR_PRIORITY) sl_strlcat(list, _(" getpriority"), len);
711 if (res & SH_PR_SCHED) sl_strlcat(list, _(" sched_getparam"), len);
712 if (res & SH_PR_GETSID) sl_strlcat(list, _(" getsid"), len);
713 if (res & SH_PR_GETPGID) sl_strlcat(list, _(" getpgid"), len);
714 if (res & SH_PR_KILL) sl_strlcat(list, _(" kill"), len);
715 if (res & SH_PR_STATVSF) sl_strlcat(list, _(" statvfs"), len);
716 if (res & SH_PR_PS2) sl_strlcat(list, _(" ps(final)"), len);
717 return;
718}
719
720
721static short sh_processes_check (pid_t pid, short res)
722{
723 int have_checks = 0;
724 int need_checks = 0;
725#ifdef HAVE_PROCFS
726 char path[128];
727 struct stat buf;
728 DIR * dir;
729 int retval;
730#if defined(HAVE_STATVFS) && !defined(__FreeBSD__)
731 struct statvfs vfsbuf;
732#endif
733#endif
734
735#if !defined(sun) && !defined(__sun) && !defined(__sun__)
736#ifdef _POSIX_PRIORITY_SCHEDULING
737 struct sched_param p;
738#endif
739#endif
740
741 if (0 == kill(pid, 0))
742 {
743 res |= SH_PR_KILL; res |= SH_PR_ANY; ++have_checks;
744 ++need_checks;
745 }
746 else if (errno != EPERM)
747 {
748 ++need_checks;
749 }
750
751
752#ifdef HAVE_GETPGID
753 if ((pid_t)-1 != getpgid(pid))
754 {
755 res |= SH_PR_GETPGID; res |= SH_PR_ANY; ++have_checks;
756 }
757 ++need_checks;
758#endif
759
760#ifdef HAVE_GETSID
761 if ((pid_t)-1 != getsid(pid))
762 {
763 res |= SH_PR_GETSID; res |= SH_PR_ANY; ++have_checks;
764 }
765 ++need_checks;
766#endif
767
768 /* sched_getparam() is broken on solaris 10, may segfault in librt
769 */
770#if !defined(sun) && !defined(__sun) && !defined(__sun__)
771#ifdef _POSIX_PRIORITY_SCHEDULING
772 if (0 == sched_getparam (pid, &p))
773 {
774 res |= SH_PR_SCHED; res |= SH_PR_ANY; ++have_checks;
775 }
776 ++need_checks;
777#endif
778#endif
779
780#ifdef HAVE_GETPRIORITY
781 errno = 0;
782 if (((-1) == getpriority (PRIO_PROCESS, (int) pid)) && (errno == ESRCH));
783 else
784 {
785 res |= SH_PR_PRIORITY; res |= SH_PR_ANY; ++have_checks;
786 }
787 ++need_checks;
788#endif
789
790#ifdef HAVE_PROCFS
791 sl_snprintf (path, sizeof(path), "/proc/%ld", (unsigned long) pid);
792
793 do {
794 retval = lstat (path, &buf);
795 } while (retval < 0 && errno == EINTR);
796
797 if (0 == retval)
798 {
799 res |= SH_PR_LSTAT; res |= SH_PR_ANY; ++have_checks;
800 }
801 ++need_checks;
802
803 if (NULL != (dir = opendir(path)))
804 {
805 res |= SH_PR_OPENDIR; res |= SH_PR_ANY; ++have_checks;
806 closedir(dir);
807 }
808 ++need_checks;
809
810#if defined(HAVE_STATVFS) && !defined(__FreeBSD__)
811 do {
812 retval = statvfs (path, &vfsbuf);
813 } while (retval < 0 && errno == EINTR);
814
815 if (0 == retval)
816 {
817 res |= SH_PR_STATVSF; res |= SH_PR_ANY; ++have_checks;
818 }
819 ++need_checks;
820#endif
821
822#if !defined(SH_PROFILE)
823 if (0 == chdir(path))
824 {
825 res |= SH_PR_CHDIR; res |= SH_PR_ANY; ++have_checks;
826 do {
827 retval = chdir ("/");
828 } while (retval < 0 && errno == EINTR);
829 }
830 ++need_checks;
831#endif
832#endif
833
834 if (have_checks == need_checks)
835 {
836 res |= SH_PR_ALL;
837 }
838 return res;
839}
840
841extern int flag_err_debug;
842
843static int sh_processes_readps (FILE * in, short * res,
844 char * str, size_t len,
845 short flag, pid_t pid)
846{
847 int cc;
848 unsigned int lnum = 0;
849 unsigned long num = 0;
850 char c;
851 unsigned int pos = 0;
852 char tstr[256];
853 enum { SKIP_TO_WS, SKIP_WS, SKIP_TO_WS2, SKIP_WS2, GET_NUM, SKIP_END, GET_NUM2 } line;
854
855 SL_ENTER(_("sh_processes_readps"));
856
857 if (!in) {
858 SL_RETURN((-1), _("sh_processes_readps"));
859 }
860
861 tstr[(sizeof(tstr)-1)] = '\0';
862 tstr[0] = '\0';
863 line = SKIP_END; /* Skip 1st line */
864
865 do
866 {
867 cc = fgetc(in);
868
869 if (EOF == cc)
870 {
871 if (feof(in))
872 {
873 break;
874 }
875 else if (errno == EAGAIN)
876 {
877 clearerr(in);
878 continue;
879 }
880#ifdef HOST_IS_OPENBSD
881 else if (errno == ENODEV)
882 {
883 clearerr(in);
884 continue;
885 }
886#endif
887 else
888 {
889 char errbuf[SH_ERRBUF_SIZE];
890
891 /* SH_MUTEX_LOCK(mutex_thread_nolog) is in caller */
892 sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, errno, MSG_E_SUBGEN,
893 sh_error_message(errno, errbuf, sizeof(errbuf)),
894 _("sh_processes_readps"));
895 break;
896 }
897 }
898
899 c = (char) cc;
900
901 if (pos < (sizeof(tstr)-1))
902 {
903 tstr[pos] = c; ++pos;
904 }
905
906 switch(line)
907 {
908 case SKIP_END:
909 if (c == '\n')
910 {
911 tstr[pos-1] = '\0';
912 if (flag_err_debug == SL_TRUE)
913 {
914 /* SH_MUTEX_LOCK(mutex_thread_nolog) is in caller */
915 sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, num,
916 MSG_E_SUBGEN,
917 tstr,
918 _("sh_processes_readps"));
919 }
920 /* fprintf(stderr, "<%ld> %s\n", num, tstr); */
921 line = SKIP_WS; pos = 0;
922 if (str != NULL && num == (unsigned long) pid)
923 sl_strlcpy(str, tstr, len);
924 if (lnum != 0)
925 is_in_watchlist (tstr, num);
926 ++lnum;
927 }
928 break;
929 case SKIP_TO_WS:
930 if (!isspace(cc))
931 break;
932 line = SKIP_WS;
933 /* fallthrough */
934 case SKIP_WS:
935 if (isspace(cc))
936 break;
937 num = 0;
938 line = GET_NUM;
939 /* fallthrough */
940 case GET_NUM:
941 if (isdigit(cc))
942 {
943 num = num * 10 + (c - '0');
944 break;
945 }
946 else if (isspace(cc))
947 {
948#ifdef PS_THREADS
949 num = 0;
950 line = SKIP_WS2;
951#else
952 if (num < sh_prochk_maxpid && num >= sh_prochk_minpid)
953 {
954 res[num - sh_prochk_minpid] |= flag;
955 }
956 line = SKIP_END;
957#endif
958 break;
959 }
960 else
961 {
962 line = SKIP_TO_WS;
963 break;
964 }
965 case SKIP_TO_WS2:
966 if (!isspace(cc))
967 break;
968 line = SKIP_WS2;
969 /* fallthrough */
970 case SKIP_WS2:
971 if (isspace(cc))
972 break;
973 num = 0;
974 line = GET_NUM2;
975 /* fallthrough */
976 case GET_NUM2:
977 if (isdigit(cc))
978 {
979 num = num * 10 + (c - '0');
980 break;
981 }
982 else if (isspace(cc))
983 {
984 if (num < sh_prochk_maxpid && num >= sh_prochk_minpid)
985 {
986 res[num - sh_prochk_minpid] |= flag;
987 }
988 line = SKIP_END;
989 break;
990 }
991 else
992 {
993 line = SKIP_TO_WS2;
994 break;
995 }
996 default:
997 SL_RETURN ((-1), _("sh_processes_readps"));
998 }
999 } while (1);
1000
1001 if (ferror(in))
1002 {
1003 SL_RETURN ((-1), _("sh_processes_readps"));
1004 }
1005
1006 SL_RETURN ((0), _("sh_processes_readps"));
1007}
1008
1009static int sh_processes_runps (short * res, char * str, size_t len,
1010 short flag, pid_t pid)
1011{
1012 sh_tas_t task;
1013
1014 int status = 0;
1015 char * p;
1016 struct sigaction new_act;
1017 struct sigaction old_act;
1018 int retval = 0;
1019 char dir[SH_PATHBUF];
1020
1021 SL_ENTER(_("sh_processes_runps"));
1022
1023 sh_ext_tas_init(&task);
1024 p = sh_unix_getUIDdir (SH_ERR_ERR, task.run_user_uid, dir, sizeof(dir));
1025 if (p)
1026 {
1027 (void) sh_ext_tas_add_envv (&task, _("HOME"), p);
1028 }
1029 (void) sh_ext_tas_add_envv (&task, _("SHELL"),
1030 _("/bin/sh"));
1031 (void) sh_ext_tas_add_envv (&task, _("PATH"),
1032 _("/sbin:/usr/sbin:/bin:/usr/bin"));
1033 if (sh.timezone != NULL)
1034 {
1035 (void) sh_ext_tas_add_envv(&task, "TZ", sh.timezone);
1036 }
1037
1038 if (!sh_prochk_pspath)
1039 sh_ext_tas_command(&task, PSPATH);
1040 else
1041 sh_ext_tas_command(&task, sh_prochk_pspath);
1042
1043 (void) sh_ext_tas_add_argv(&task, _("ps"));
1044
1045 if (!sh_prochk_psarg)
1046 {
1047#ifdef PS_THREADS
1048 (void) sh_ext_tas_add_argv(&task, _("-eT"));
1049#else
1050 (void) sh_ext_tas_add_argv(&task, PSARG);
1051#endif
1052 }
1053 else
1054 {
1055 (void) sh_ext_tas_add_argv(&task, sh_prochk_psarg);
1056 }
1057
1058 task.rw = 'r';
1059 task.fork_twice = S_FALSE;
1060
1061 status = sh_ext_popen(&task);
1062 if (status != 0)
1063 {
1064 /* SH_MUTEX_LOCK(mutex_thread_nolog) is in caller */
1065 sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, status, MSG_E_SUBGEN,
1066 _("Could not open pipe"), _("sh_processes_runps"));
1067 SL_RETURN ((-1), _("sh_processes_runps"));
1068 }
1069
1070 /* ignore SIGPIPE (instead get EPIPE if connection is closed)
1071 */
1072 new_act.sa_handler = SIG_IGN;
1073 (void) retry_sigaction (FIL__, __LINE__, SIGPIPE, &new_act, &old_act);
1074
1075 /* read from the open pipe
1076 */
1077 if (task.pipe != NULL)
1078 {
1079 retval = sh_processes_readps (task.pipe, res, str, len, flag, pid);
1080 }
1081
1082 /* restore old signal handler
1083 */
1084 (void) retry_sigaction (FIL__, __LINE__, SIGPIPE, &old_act, NULL);
1085
1086 /* close pipe and return exit status
1087 */
1088 (void) sh_ext_pclose(&task);
1089 sh_ext_tas_free (&task);
1090 SL_RETURN ((retval), _("sh_processes_runps"));
1091}
1092
1093/* Check whether there is a visible process
1094 * with PID = i + 1024
1095 */
1096static size_t p_store = 0;
1097
1098static int openvz_ok(short * res, size_t i)
1099{
1100
1101 if (sh_prochk_openvz == S_FALSE) {
1102 return 0;
1103 }
1104
1105 i += 1024;
1106
1107 if (i >= sh_prochk_size) {
1108 return 0;
1109 }
1110
1111 if ( ((res[i] & SH_PR_PS) || (res[i] & SH_PR_PS2)) && (res[i] & SH_PR_ANY))
1112 {
1113 /* This is a system process corresponding to a 'virtual'
1114 * process that has a PID offset by 1024
1115 */
1116 return 1;
1117 }
1118
1119 if (openvz_hidden > 0)
1120 {
1121 p_store = i;
1122 --openvz_hidden;
1123 return 1;
1124 }
1125 else if (i == p_store)
1126 {
1127 return 1;
1128 }
1129
1130 return 0;
1131}
1132
1133static int sh_process_check_int (short * res)
1134{
1135 volatile size_t i;
1136 size_t j;
1137 char tests[512];
1138 volatile int retval;
1139
1140 pid_t this_pid;
1141
1142 SL_ENTER(_("sh_process_check_int"));
1143
1144 this_pid = getpid();
1145
1146 if (!res)
1147 {
1148 SH_MUTEX_LOCK(mutex_thread_nolog);
1149 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_SUBGEN,
1150 _("Internal error: NULL argument, switching off"),
1151 _("sh_process_check_int"));
1152 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1153 SL_RETURN ((-1), _("sh_process_check_int"));
1154 }
1155
1156 SH_MUTEX_LOCK(mutex_thread_nolog);
1157 retval = sh_processes_runps (res, NULL, 0, SH_PR_PS, 0);
1158 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1159 for (i = sh_prochk_minpid; i != sh_prochk_maxpid; ++i)
1160 {
1161 j = i - sh_prochk_minpid;
1162 res[j] = sh_processes_check ((pid_t) i, res[j]);
1163 }
1164 SH_MUTEX_LOCK(mutex_thread_nolog);
1165 retval += sh_processes_runps (res, NULL, 0, SH_PR_PS2, 0);
1166 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1167
1168 if (retval != 0)
1169 {
1170 SH_MUTEX_LOCK(mutex_thread_nolog);
1171 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_SUBGEN,
1172 _("Failed to run ps, switching off"),
1173 _("sh_process_check_int"));
1174 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1175 SL_RETURN ((-1), _("sh_process_check_int"));
1176 }
1177
1178 /* Evaluate results
1179 */
1180 for (i = sh_prochk_minpid; i != sh_prochk_maxpid; ++i)
1181 {
1182 /* don't check the current process
1183 */
1184 if (i == (size_t) this_pid)
1185 continue;
1186
1187 j = i - sh_prochk_minpid;
1188
1189 if (((res[j] & SH_PR_PS) != 0) || ((res[j] & SH_PR_PS2) != 0))
1190 {
1191 res[j] |= SH_PR_PS_ANY;
1192 }
1193 else
1194 {
1195 res[j] &= ~SH_PR_PS_ANY;
1196 }
1197
1198 tests[0] = '\0';
1199
1200 if ((res[j] & SH_PR_ANY) || (res[j] & SH_PR_PS_ANY))
1201 {
1202 /* list all tests where the pid was found
1203 */
1204 sh_processes_tlist (tests, sizeof(tests), res[j]);
1205
1206 /*
1207 * case 1: in ps and found
1208 */
1209 if ((res[j] & SH_PR_PS_ANY) && (res[j] & SH_PR_ANY))
1210 {
1211 SH_MUTEX_LOCK(mutex_thread_nolog);
1212 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_PCK_OK,
1213 (unsigned long) i, tests);
1214 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1215 }
1216
1217 /*
1218 * case 2: not in ps and found
1219 */
1220 else if ((res[j] & SH_PR_PS_ANY) == 0)
1221 {
1222 res[j] = sh_processes_check ((pid_t) i, 0);
1223 /*
1224 * if still there, it is real and hidden
1225 */
1226 if ((res[j] & SH_PR_ANY) && !openvz_ok(res, j))
1227 {
1228 if (S_FALSE == is_in_list(&list_hidden, NULL, i))
1229 {
1230 char user[16];
1231 char * aout;
1232 char * safe;
1233
1234 SH_MUTEX_LOCK(mutex_thread_nolog);
1235 aout = get_user_and_path ((pid_t) i, user, sizeof(user));
1236 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1237
1238 if (aout)
1239 {
1240 safe = sh_util_safe_name (aout);
1241 SH_MUTEX_LOCK(mutex_thread_nolog);
1242 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
1243 MSG_PCK_P_HIDDEN,
1244 (unsigned long) i, tests, safe, user);
1245 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1246 SH_FREE(safe);
1247 SH_FREE(aout);
1248 }
1249 else
1250 {
1251 SH_MUTEX_LOCK(mutex_thread_nolog);
1252 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
1253 MSG_PCK_HIDDEN,
1254 (unsigned long) i, tests);
1255 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1256 }
1257 }
1258 }
1259 }
1260
1261 /*
1262 * case 3: in ps, but not found
1263 */
1264 else
1265 {
1266 if (((res[j] & SH_PR_PS) != 0) && ((res[j] & SH_PR_PS2) != 0))
1267 {
1268 if (S_FALSE == is_in_list(&list_fake, NULL, i))
1269 {
1270 SH_MUTEX_LOCK(mutex_thread_nolog);
1271 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
1272 MSG_PCK_FAKE,
1273 (unsigned long) i, tests);
1274 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1275 }
1276 }
1277 }
1278 }
1279 } /* loop end */
1280
1281 check_watchlist (res);
1282
1283 SL_RETURN (0, _("sh_process_check_int"));
1284}
1285
1286/* Initialise.
1287 */
1288static int sh_prochk_init_internal(void)
1289{
1290 SL_ENTER(_("sh_prochk_init"));
1291
1292 (void) proc_max_pid (&sh_prochk_maxpid);
1293
1294 if (sh_prochk_minpid > sh_prochk_maxpid)
1295 ShProchkActive = S_FALSE;
1296
1297 /* We need to free anything allocated by the configuration functions if
1298 * we find that the module is to be left inactive - otherwise _reconf()
1299 * won't quite work.
1300 */
1301 if( ShProchkActive == S_FALSE )
1302 {
1303 sh_prochk_free_list(process_check);
1304 process_check = NULL;
1305 SL_RETURN(-1, _("sh_prochk_init"));
1306 }
1307
1308 sh_prochk_size = sh_prochk_maxpid - sh_prochk_minpid;
1309
1310 sh_prochk_res = SH_ALLOC(sizeof(short) * sh_prochk_size);
1311 memset (sh_prochk_res, 0, sizeof(short) * sh_prochk_size);
1312
1313 SL_RETURN(0, _("sh_prochk_init"));
1314}
1315
1316int sh_prochk_init (struct mod_type * arg)
1317{
1318#ifndef HAVE_PTHREAD
1319 (void) arg;
1320#endif
1321
1322 if (ShProchkActive == S_FALSE)
1323 return SH_MOD_FAILED;
1324#ifdef HAVE_PTHREAD
1325 if (arg != NULL && arg->initval < 0 &&
1326 (sh.flag.isdaemon == S_TRUE || sh.flag.loop == S_TRUE))
1327 {
1328 if (0 == sh_pthread_create(sh_threaded_module_run, (void *)arg))
1329 return SH_MOD_THREAD;
1330 else
1331 return SH_MOD_FAILED;
1332 }
1333#endif
1334 return sh_prochk_init_internal();
1335}
1336
1337int sh_prochk_timer(time_t tcurrent)
1338{
1339 static time_t lastcheck = 0;
1340
1341 SL_ENTER(_("sh_prochk_timer"));
1342 if ((time_t) (tcurrent - lastcheck) >= sh_prochk_interval)
1343 {
1344 lastcheck = tcurrent;
1345 SL_RETURN((-1), _("sh_prochk_timer"));
1346 }
1347 SL_RETURN(0, _("sh_prochk_timer"));
1348}
1349
1350int sh_prochk_check(void)
1351{
1352 int status;
1353
1354 SL_ENTER(_("sh_prochk_check"));
1355
1356 SH_MUTEX_LOCK(mutex_proc_check);
1357
1358 status = 0;
1359
1360 if( ShProchkActive != S_FALSE )
1361 {
1362 SH_MUTEX_LOCK(mutex_thread_nolog);
1363 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_PCK_CHECK,
1364 (unsigned long) sh_prochk_minpid,
1365 (unsigned long) (sh_prochk_maxpid-1));
1366 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1367
1368 if (sh_prochk_res) {
1369 memset (sh_prochk_res, 0, sizeof(short) * sh_prochk_size);
1370 }
1371 status = sh_process_check_int(sh_prochk_res);
1372
1373 if (status != 0)
1374 ShProchkActive = S_FALSE;
1375
1376 /* clean out old entries which are not marked
1377 * as missing/hidden/fake anymore
1378 */
1379 clean_list (&list_missing);
1380 clean_list (&list_hidden);
1381 clean_list (&list_fake);
1382 }
1383
1384 SH_MUTEX_UNLOCK(mutex_proc_check);
1385
1386 SL_RETURN(status, _("sh_prochk_check"));
1387}
1388
1389/* Free our lists and the associated memory
1390 */
1391int sh_prochk_cleanup(void)
1392{
1393 SL_ENTER(_("sh_prochk_cleanup"));
1394
1395 sh_prochk_reconf();
1396
1397 if (list_missing) {
1398 kill_list(list_missing);
1399 list_missing = NULL;
1400 }
1401 if (list_hidden) {
1402 kill_list(list_hidden);
1403 list_hidden = NULL;
1404 }
1405 if (list_fake) {
1406 kill_list(list_fake);
1407 list_fake = NULL;
1408 }
1409
1410 SL_RETURN(0, _("sh_prochk_cleanup"));
1411}
1412
1413/* Free our lists and the associated memory
1414 */
1415int sh_prochk_reconf(void)
1416{
1417 SL_ENTER(_("sh_prochk_reconf"));
1418
1419 SH_MUTEX_LOCK(mutex_proc_check);
1420 userdef_maxpid = 0;
1421 sh_prochk_maxpid = 0x8000;
1422 sh_prochk_minpid = 0x0001;
1423 sh_prochk_interval = SH_PROCHK_INTERVAL;
1424 sh_prochk_openvz = S_FALSE;
1425 p_store = 0;
1426 openvz_hidden = 0;
1427
1428 sh_prochk_free_list(process_check);
1429 process_check = NULL;
1430 if (sh_prochk_res != NULL)
1431 SH_FREE(sh_prochk_res);
1432 sh_prochk_res = NULL;
1433
1434 if (sh_prochk_psarg)
1435 SH_FREE(sh_prochk_psarg);
1436 sh_prochk_psarg = NULL;
1437 if (sh_prochk_pspath)
1438 SH_FREE(sh_prochk_pspath);
1439 sh_prochk_pspath = NULL;
1440 SH_MUTEX_UNLOCK(mutex_proc_check);
1441
1442 SL_RETURN(0, _("sh_prochk_reconf"));
1443}
1444
1445/* #if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE) */
1446#endif
1447
1448/* #ifdef SH_USE_PROCESSCHECK */
1449#endif
1450
1451
1452#ifdef SH_CUTEST
1453#include "CuTest.h"
1454
1455void Test_processcheck_watchlist_ok (CuTest *tc) {
1456#if defined(SH_USE_PROCESSCHECK) && (defined(SH_WITH_CLIENT) || defined(SH_STANDALONE))
1457 CuAssertTrue(tc, 0 == sh_prochk_add_process("init"));
1458 CuAssertTrue(tc,
1459 S_TRUE == is_in_watchlist(" 1 ? 00:00:00 init", 0));
1460 CuAssertTrue(tc,
1461 S_FALSE == is_in_watchlist(" 1 ? 00:00:00 flix", 0));
1462 CuAssertTrue(tc,
1463 S_TRUE == is_in_watchlist("25218 ? SNs 0:01 /usr/sbin/init -k start -DSSL", 0));
1464 CuAssertTrue(tc,
1465 S_FALSE == is_in_watchlist("25218 ? SNs 0:01 /usr/sbin/apache2 -k start -DSSL", 0));
1466
1467
1468 sh_prochk_free_list(process_check);
1469 process_check = NULL;
1470 CuAssertTrue(tc, S_FALSE == is_in_watchlist("init", 0));
1471
1472 CuAssertTrue(tc, 0 == sh_prochk_add_process("init"));
1473 CuAssertTrue(tc, 0 == sh_prochk_add_process("ssh"));
1474 CuAssertTrue(tc, 0 == sh_prochk_add_process("syslog"));
1475 CuAssertTrue(tc, S_TRUE == is_in_watchlist("init", 0));
1476 CuAssertTrue(tc, S_TRUE == is_in_watchlist("ssh", 0));
1477 CuAssertTrue(tc, S_TRUE == is_in_watchlist("syslog", 0));
1478
1479 sh_prochk_free_list(process_check);
1480 process_check = NULL;
1481 CuAssertTrue(tc, S_FALSE == is_in_watchlist("init", 0));
1482 CuAssertTrue(tc, S_FALSE == is_in_watchlist("ssh", 0));
1483 CuAssertTrue(tc, S_FALSE == is_in_watchlist("syslog", 0));
1484#else
1485 (void) tc; /* fix compiler warning */
1486#endif
1487 return;
1488}
1489
1490void Test_processcheck_listhandle_ok (CuTest *tc) {
1491#if defined(SH_USE_PROCESSCHECK) && (defined(SH_WITH_CLIENT) || defined(SH_STANDALONE))
1492 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "init", 0));
1493 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1494 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "foobar", 0));
1495 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1496
1497 if (list_missing)
1498 kill_list(list_missing);
1499 list_missing = NULL;
1500
1501 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "init", 0));
1502 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1503 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "foobar", 0));
1504 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1505
1506 if (list_missing)
1507 kill_list(list_missing);
1508 list_missing = NULL;
1509
1510 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "init", 0));
1511 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1512 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "foobar", 0));
1513 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1514
1515 CuAssertTrue(tc, 2 == clean_list(&list_missing));
1516 CuAssertPtrNotNull(tc, list_missing);
1517
1518 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1519 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1520
1521 CuAssertTrue(tc, 2 == clean_list(&list_missing));
1522 CuAssertPtrNotNull(tc, list_missing);
1523
1524 CuAssertTrue(tc, 0 == clean_list(&list_missing));
1525 CuAssertTrue(tc, NULL == list_missing);
1526#else
1527 (void) tc; /* fix compiler warning */
1528#endif
1529 return;
1530}
1531
1532
1533/* #ifdef SH_CUTEST */
1534#endif
1535
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