source: trunk/src/sh_processcheck.c@ 381

Last change on this file since 381 was 379, checked in by katerina, 13 years ago

Fix for ticket #277 (sigpipe).
File size: 35.1 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#ifdef SH_EVAL_SHELL
525 sh_prochk_pspath = sh_util_strdup (str);
526 SL_RETURN((0), _("sh_prochk_set_pspath"));
527#else
528 sh_prochk_pspath = NULL;
529 SL_RETURN((-1), _("sh_prochk_set_pspath"));
530#endif
531}
532
533/* argument for ps
534 */
535int sh_prochk_set_psarg(const char *str)
536{
537 SL_ENTER(_("sh_prochk_set_psarg"));
538
539 if (sh_prochk_psarg)
540 SH_FREE(sh_prochk_psarg);
541#ifdef SH_EVAL_SHELL
542 sh_prochk_psarg = sh_util_strdup (str);
543 SL_RETURN((0), _("sh_prochk_set_psarg"));
544#else
545 sh_prochk_psarg = NULL;
546 SL_RETURN((-1), _("sh_prochk_set_psarg"));
547#endif
548}
549
550
551/* Decide if we're active.
552 */
553int sh_prochk_set_active(const char *str)
554{
555 int value;
556
557 SL_ENTER(_("sh_prochk_set_active"));
558
559 value = sh_util_flagval(str, &ShProchkActive);
560
561 SL_RETURN((value), _("sh_prochk_set_active"));
562}
563
564/* Are we on openvz.
565 */
566static int openvz_hidden = 0;
567
568int sh_prochk_set_openvz(const char *str)
569{
570 int value;
571
572 SL_ENTER(_("sh_prochk_set_openvz"));
573
574 value = sh_util_flagval(str, &sh_prochk_openvz);
575
576 if (sh_prochk_openvz != S_FALSE) {
577 openvz_hidden = 1;
578 }
579
580 SL_RETURN((value), _("sh_prochk_set_openvz"));
581}
582
583/* Minimum PID
584 */
585int sh_prochk_set_minpid(const char * str)
586{
587 size_t value;
588 char * foo;
589 int retval = 0;
590
591 SL_ENTER(_("sh_prochk_set_minpid"));
592
593 value = (size_t) strtoul(str, &foo, 0);
594 if (*foo != '\0')
595 retval = -1;
596 else
597 sh_prochk_minpid = value;
598
599 SL_RETURN((retval), _("sh_prochk_set_minpid"));
600}
601
602/* Maximum PID
603 */
604static int userdef_maxpid = 0;
605
606int sh_prochk_set_maxpid(const char * str)
607{
608 size_t value;
609 char * foo;
610 int retval = -1;
611
612 SL_ENTER(_("sh_prochk_set_maxpid"));
613
614 value = (size_t) strtoul(str, &foo, 0);
615
616 if (*foo == '\0' && SL_TRUE == sl_ok_adds(value, 1)) {
617 sh_prochk_maxpid = value + 1;
618 userdef_maxpid = 1;
619 retval = 0;
620 }
621
622 SL_RETURN((retval), _("sh_prochk_set_maxpid"));
623}
624
625int sh_prochk_set_interval (const char * c)
626{
627 int retval = 0;
628 long val;
629
630 SL_ENTER(_("sh_prochk_set_interval"));
631 val = strtol (c, (char **)NULL, 10);
632 if (val <= 0)
633 {
634 SH_MUTEX_LOCK(mutex_thread_nolog);
635 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
636 _("process check interval"), c);
637 SH_MUTEX_UNLOCK(mutex_thread_nolog);
638 retval = -1;
639 }
640 else
641 {
642 sh_prochk_interval = (time_t) val;
643 }
644 SL_RETURN(retval, _("sh_prochk_set_interval"));
645}
646
647
648
649/* Recurse to the end of the list and then free the data as we return
650 * back up towards the start, making sure to free any strdupped strings
651 */
652static void sh_prochk_free_list(struct watchlist *head)
653{
654 if ( head != NULL )
655 {
656 sh_prochk_free_list(head->next);
657 if (head->str)
658 SH_FREE(head->str);
659#ifdef HAVE_REGEX_H
660 regfree(&(head->preg));
661#endif
662 SH_FREE(head);
663 }
664 return;
665}
666
667#if defined(__linux__)
668#define PROC_PID_MAX _("/proc/sys/kernel/pid_max")
669
670static int proc_max_pid (size_t * procpid)
671{
672 char * ret;
673 unsigned long pid;
674 FILE * fd;
675 char str[128];
676 char * ptr;
677
678 SL_ENTER(_("proc_max_pid"));
679
680 if (userdef_maxpid != 0)
681 SL_RETURN((-1), _("proc_max_pid"));
682
683 if (0 == access(PROC_PID_MAX, R_OK)) /* flawfinder: ignore */
684 {
685 if (NULL != (fd = fopen(PROC_PID_MAX, "r")))
686 {
687 str[0] = '\0';
688 ret = fgets(str, 128, fd);
689 if (ret && *str != '\0')
690 {
691 pid = strtoul(str, &ptr, 0);
692 if (*ptr == '\0' || *ptr == '\n')
693 {
694 sl_fclose(FIL__, __LINE__, fd);
695 *procpid = (size_t) pid;
696 SL_RETURN(0, _("proc_max_pid"));
697 }
698 }
699 sl_fclose(FIL__, __LINE__, fd);
700 }
701 }
702 SL_RETURN((-1), _("proc_max_pid"));
703}
704#else
705static int proc_max_pid(size_t * dummy)
706{
707 (void) dummy;
708 return -1;
709}
710#endif
711
712static void sh_processes_tlist (char * list, size_t len, short res)
713{
714 if (res & SH_PR_PS) sl_strlcat(list, _(" ps(initial)"), len);
715 if (res & SH_PR_CHDIR) sl_strlcat(list, _(" chdir"), len);
716 if (res & SH_PR_OPENDIR) sl_strlcat(list, _(" opendir"), len);
717 if (res & SH_PR_LSTAT) sl_strlcat(list, _(" lstat"), len);
718 if (res & SH_PR_PRIORITY) sl_strlcat(list, _(" getpriority"), len);
719 if (res & SH_PR_SCHED) sl_strlcat(list, _(" sched_getparam"), len);
720 if (res & SH_PR_GETSID) sl_strlcat(list, _(" getsid"), len);
721 if (res & SH_PR_GETPGID) sl_strlcat(list, _(" getpgid"), len);
722 if (res & SH_PR_KILL) sl_strlcat(list, _(" kill"), len);
723 if (res & SH_PR_STATVSF) sl_strlcat(list, _(" statvfs"), len);
724 if (res & SH_PR_PS2) sl_strlcat(list, _(" ps(final)"), len);
725 return;
726}
727
728
729static short sh_processes_check (pid_t pid, short res)
730{
731 int have_checks = 0;
732 int need_checks = 0;
733#ifdef HAVE_PROCFS
734 char path[128];
735 struct stat buf;
736 DIR * dir;
737 int retval;
738#if defined(HAVE_STATVFS) && !defined(__FreeBSD__)
739 struct statvfs vfsbuf;
740#endif
741#endif
742
743#if !defined(sun) && !defined(__sun) && !defined(__sun__)
744#ifdef _POSIX_PRIORITY_SCHEDULING
745 struct sched_param p;
746#endif
747#endif
748
749 if (0 == kill(pid, 0))
750 {
751 res |= SH_PR_KILL; res |= SH_PR_ANY; ++have_checks;
752 ++need_checks;
753 }
754 else if (errno != EPERM)
755 {
756 ++need_checks;
757 }
758
759
760#ifdef HAVE_GETPGID
761 if ((pid_t)-1 != getpgid(pid))
762 {
763 res |= SH_PR_GETPGID; res |= SH_PR_ANY; ++have_checks;
764 }
765 ++need_checks;
766#endif
767
768#ifdef HAVE_GETSID
769 if ((pid_t)-1 != getsid(pid))
770 {
771 res |= SH_PR_GETSID; res |= SH_PR_ANY; ++have_checks;
772 }
773 ++need_checks;
774#endif
775
776 /* sched_getparam() is broken on solaris 10, may segfault in librt
777 */
778#if !defined(sun) && !defined(__sun) && !defined(__sun__)
779#ifdef _POSIX_PRIORITY_SCHEDULING
780 if (0 == sched_getparam (pid, &p))
781 {
782 res |= SH_PR_SCHED; res |= SH_PR_ANY; ++have_checks;
783 }
784 ++need_checks;
785#endif
786#endif
787
788#ifdef HAVE_GETPRIORITY
789 errno = 0;
790 if (((-1) == getpriority (PRIO_PROCESS, (int) pid)) && (errno == ESRCH));
791 else
792 {
793 res |= SH_PR_PRIORITY; res |= SH_PR_ANY; ++have_checks;
794 }
795 ++need_checks;
796#endif
797
798#ifdef HAVE_PROCFS
799 sl_snprintf (path, sizeof(path), "/proc/%ld", (unsigned long) pid);
800
801 do {
802 retval = lstat (path, &buf);
803 } while (retval < 0 && errno == EINTR);
804
805 if (0 == retval)
806 {
807 res |= SH_PR_LSTAT; res |= SH_PR_ANY; ++have_checks;
808 }
809 ++need_checks;
810
811 if (NULL != (dir = opendir(path)))
812 {
813 res |= SH_PR_OPENDIR; res |= SH_PR_ANY; ++have_checks;
814 closedir(dir);
815 }
816 ++need_checks;
817
818#if defined(HAVE_STATVFS) && !defined(__FreeBSD__)
819 do {
820 retval = statvfs (path, &vfsbuf);
821 } while (retval < 0 && errno == EINTR);
822
823 if (0 == retval)
824 {
825 res |= SH_PR_STATVSF; res |= SH_PR_ANY; ++have_checks;
826 }
827 ++need_checks;
828#endif
829
830#if !defined(SH_PROFILE)
831 if (0 == chdir(path))
832 {
833 res |= SH_PR_CHDIR; res |= SH_PR_ANY; ++have_checks;
834 do {
835 retval = chdir ("/");
836 } while (retval < 0 && errno == EINTR);
837 }
838 ++need_checks;
839#endif
840#endif
841
842 if (have_checks == need_checks)
843 {
844 res |= SH_PR_ALL;
845 }
846 return res;
847}
848
849extern int flag_err_debug;
850
851static int sh_processes_readps (FILE * in, short * res,
852 char * str, size_t len,
853 short flag, pid_t pid)
854{
855 int cc;
856 unsigned int lnum = 0;
857 unsigned long num = 0;
858 char c;
859 unsigned int pos = 0;
860 char tstr[256];
861 enum { SKIP_TO_WS, SKIP_WS, SKIP_TO_WS2, SKIP_WS2, GET_NUM, SKIP_END, GET_NUM2 } line;
862
863 SL_ENTER(_("sh_processes_readps"));
864
865 if (!in) {
866 SL_RETURN((-1), _("sh_processes_readps"));
867 }
868
869 tstr[(sizeof(tstr)-1)] = '\0';
870 tstr[0] = '\0';
871 line = SKIP_END; /* Skip 1st line */
872
873 do
874 {
875 cc = fgetc(in);
876
877 if (EOF == cc)
878 {
879 if (feof(in))
880 {
881 break;
882 }
883 else if (errno == EAGAIN)
884 {
885 clearerr(in);
886 continue;
887 }
888#ifdef HOST_IS_OPENBSD
889 else if (errno == ENODEV)
890 {
891 clearerr(in);
892 continue;
893 }
894#endif
895 else
896 {
897 char errbuf[SH_ERRBUF_SIZE];
898
899 /* SH_MUTEX_LOCK(mutex_thread_nolog) is in caller */
900 sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, errno, MSG_E_SUBGEN,
901 sh_error_message(errno, errbuf, sizeof(errbuf)),
902 _("sh_processes_readps"));
903 break;
904 }
905 }
906
907 c = (char) cc;
908
909 if (pos < (sizeof(tstr)-1))
910 {
911 tstr[pos] = c; ++pos;
912 }
913
914 switch(line)
915 {
916 case SKIP_END:
917 if (c == '\n')
918 {
919 tstr[pos-1] = '\0';
920 if (flag_err_debug == SL_TRUE)
921 {
922 /* SH_MUTEX_LOCK(mutex_thread_nolog) is in caller */
923 sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, num,
924 MSG_E_SUBGEN,
925 tstr,
926 _("sh_processes_readps"));
927 }
928 /* fprintf(stderr, "<%ld> %s\n", num, tstr); */
929 line = SKIP_WS; pos = 0;
930 if (str != NULL && num == (unsigned long) pid)
931 sl_strlcpy(str, tstr, len);
932 if (lnum != 0)
933 is_in_watchlist (tstr, num);
934 ++lnum;
935 }
936 break;
937 case SKIP_TO_WS:
938 if (!isspace(cc))
939 break;
940 line = SKIP_WS;
941 /* fallthrough */
942 case SKIP_WS:
943 if (isspace(cc))
944 break;
945 num = 0;
946 line = GET_NUM;
947 /* fallthrough */
948 case GET_NUM:
949 if (isdigit(cc))
950 {
951 num = num * 10 + (c - '0');
952 break;
953 }
954 else if (isspace(cc))
955 {
956#ifdef PS_THREADS
957 num = 0;
958 line = SKIP_WS2;
959#else
960 if (num < sh_prochk_maxpid && num >= sh_prochk_minpid)
961 {
962 res[num - sh_prochk_minpid] |= flag;
963 }
964 line = SKIP_END;
965#endif
966 break;
967 }
968 else
969 {
970 line = SKIP_TO_WS;
971 break;
972 }
973 case SKIP_TO_WS2:
974 if (!isspace(cc))
975 break;
976 line = SKIP_WS2;
977 /* fallthrough */
978 case SKIP_WS2:
979 if (isspace(cc))
980 break;
981 num = 0;
982 line = GET_NUM2;
983 /* fallthrough */
984 case GET_NUM2:
985 if (isdigit(cc))
986 {
987 num = num * 10 + (c - '0');
988 break;
989 }
990 else if (isspace(cc))
991 {
992 if (num < sh_prochk_maxpid && num >= sh_prochk_minpid)
993 {
994 res[num - sh_prochk_minpid] |= flag;
995 }
996 line = SKIP_END;
997 break;
998 }
999 else
1000 {
1001 line = SKIP_TO_WS2;
1002 break;
1003 }
1004 default:
1005 SL_RETURN ((-1), _("sh_processes_readps"));
1006 }
1007 } while (1);
1008
1009 if (ferror(in))
1010 {
1011 SL_RETURN ((-1), _("sh_processes_readps"));
1012 }
1013
1014 SL_RETURN ((0), _("sh_processes_readps"));
1015}
1016
1017static int sh_processes_runps (short * res, char * str, size_t len,
1018 short flag, pid_t pid)
1019{
1020 sh_tas_t task;
1021
1022 int status = 0;
1023 char * p;
1024 int retval = 0;
1025 char dir[SH_PATHBUF];
1026
1027 SL_ENTER(_("sh_processes_runps"));
1028
1029 sh_ext_tas_init(&task);
1030 p = sh_unix_getUIDdir (SH_ERR_ERR, task.run_user_uid, dir, sizeof(dir));
1031 if (p)
1032 {
1033 (void) sh_ext_tas_add_envv (&task, _("HOME"), p);
1034 }
1035 (void) sh_ext_tas_add_envv (&task, _("SHELL"),
1036 _("/bin/sh"));
1037 (void) sh_ext_tas_add_envv (&task, _("PATH"),
1038 _("/sbin:/usr/sbin:/bin:/usr/bin"));
1039 if (sh.timezone != NULL)
1040 {
1041 (void) sh_ext_tas_add_envv(&task, "TZ", sh.timezone);
1042 }
1043
1044 if (!sh_prochk_pspath)
1045 sh_ext_tas_command(&task, PSPATH);
1046 else
1047 sh_ext_tas_command(&task, sh_prochk_pspath);
1048
1049 (void) sh_ext_tas_add_argv(&task, _("ps"));
1050
1051 if (!sh_prochk_psarg)
1052 {
1053#ifdef PS_THREADS
1054 (void) sh_ext_tas_add_argv(&task, _("-eT"));
1055#else
1056 (void) sh_ext_tas_add_argv(&task, PSARG);
1057#endif
1058 }
1059 else
1060 {
1061 (void) sh_ext_tas_add_argv(&task, sh_prochk_psarg);
1062 }
1063
1064 task.rw = 'r';
1065 task.fork_twice = S_FALSE;
1066
1067 status = sh_ext_popen(&task);
1068 if (status != 0)
1069 {
1070 /* SH_MUTEX_LOCK(mutex_thread_nolog) is in caller */
1071 sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, status, MSG_E_SUBGEN,
1072 _("Could not open pipe"), _("sh_processes_runps"));
1073 SL_RETURN ((-1), _("sh_processes_runps"));
1074 }
1075
1076 /* read from the open pipe
1077 */
1078 if (task.pipe != NULL)
1079 {
1080 retval = sh_processes_readps (task.pipe, res, str, len, flag, pid);
1081 }
1082
1083 /* close pipe and return exit status
1084 */
1085 (void) sh_ext_pclose(&task);
1086 sh_ext_tas_free (&task);
1087 SL_RETURN ((retval), _("sh_processes_runps"));
1088}
1089
1090/* Check whether there is a visible process
1091 * with PID = i + 1024
1092 */
1093static size_t p_store = 0;
1094
1095static int openvz_ok(short * res, size_t i)
1096{
1097
1098 if (sh_prochk_openvz == S_FALSE) {
1099 return 0;
1100 }
1101
1102 i += 1024;
1103
1104 if (i >= sh_prochk_size) {
1105 return 0;
1106 }
1107
1108 if ( ((res[i] & SH_PR_PS) || (res[i] & SH_PR_PS2)) && (res[i] & SH_PR_ANY))
1109 {
1110 /* This is a system process corresponding to a 'virtual'
1111 * process that has a PID offset by 1024
1112 */
1113 return 1;
1114 }
1115
1116 if (openvz_hidden > 0)
1117 {
1118 p_store = i;
1119 --openvz_hidden;
1120 return 1;
1121 }
1122 else if (i == p_store)
1123 {
1124 return 1;
1125 }
1126
1127 return 0;
1128}
1129
1130static int sh_process_check_int (short * res)
1131{
1132 volatile size_t i;
1133 size_t j;
1134 char tests[512];
1135 volatile int retval;
1136
1137 pid_t this_pid;
1138
1139 SL_ENTER(_("sh_process_check_int"));
1140
1141 this_pid = getpid();
1142
1143 if (!res)
1144 {
1145 SH_MUTEX_LOCK(mutex_thread_nolog);
1146 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_SUBGEN,
1147 _("Internal error: NULL argument, switching off"),
1148 _("sh_process_check_int"));
1149 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1150 SL_RETURN ((-1), _("sh_process_check_int"));
1151 }
1152
1153 SH_MUTEX_LOCK(mutex_thread_nolog);
1154 retval = sh_processes_runps (res, NULL, 0, SH_PR_PS, 0);
1155 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1156 for (i = sh_prochk_minpid; i != sh_prochk_maxpid; ++i)
1157 {
1158 j = i - sh_prochk_minpid;
1159 res[j] = sh_processes_check ((pid_t) i, res[j]);
1160 }
1161 SH_MUTEX_LOCK(mutex_thread_nolog);
1162 retval += sh_processes_runps (res, NULL, 0, SH_PR_PS2, 0);
1163 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1164
1165 if (retval != 0)
1166 {
1167 SH_MUTEX_LOCK(mutex_thread_nolog);
1168 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_SUBGEN,
1169 _("Failed to run ps, switching off"),
1170 _("sh_process_check_int"));
1171 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1172 SL_RETURN ((-1), _("sh_process_check_int"));
1173 }
1174
1175 /* Evaluate results
1176 */
1177 for (i = sh_prochk_minpid; i != sh_prochk_maxpid; ++i)
1178 {
1179 /* don't check the current process
1180 */
1181 if (i == (size_t) this_pid)
1182 continue;
1183
1184 j = i - sh_prochk_minpid;
1185
1186 if (((res[j] & SH_PR_PS) != 0) || ((res[j] & SH_PR_PS2) != 0))
1187 {
1188 res[j] |= SH_PR_PS_ANY;
1189 }
1190 else
1191 {
1192 res[j] &= ~SH_PR_PS_ANY;
1193 }
1194
1195 tests[0] = '\0';
1196
1197 if ((res[j] & SH_PR_ANY) || (res[j] & SH_PR_PS_ANY))
1198 {
1199 /* list all tests where the pid was found
1200 */
1201 sh_processes_tlist (tests, sizeof(tests), res[j]);
1202
1203 /*
1204 * case 1: in ps and found
1205 */
1206 if ((res[j] & SH_PR_PS_ANY) && (res[j] & SH_PR_ANY))
1207 {
1208 SH_MUTEX_LOCK(mutex_thread_nolog);
1209 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_PCK_OK,
1210 (unsigned long) i, tests);
1211 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1212 }
1213
1214 /*
1215 * case 2: not in ps and found
1216 */
1217 else if ((res[j] & SH_PR_PS_ANY) == 0)
1218 {
1219 res[j] = sh_processes_check ((pid_t) i, 0);
1220 /*
1221 * if still there, it is real and hidden
1222 */
1223 if ((res[j] & SH_PR_ANY) && !openvz_ok(res, j))
1224 {
1225 if (S_FALSE == is_in_list(&list_hidden, NULL, i))
1226 {
1227 char user[16];
1228 char * aout;
1229 char * safe;
1230
1231 SH_MUTEX_LOCK(mutex_thread_nolog);
1232 aout = get_user_and_path ((pid_t) i, user, sizeof(user));
1233 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1234
1235 if (aout)
1236 {
1237 safe = sh_util_safe_name (aout);
1238 SH_MUTEX_LOCK(mutex_thread_nolog);
1239 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
1240 MSG_PCK_P_HIDDEN,
1241 (unsigned long) i, tests, safe, user);
1242 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1243 SH_FREE(safe);
1244 SH_FREE(aout);
1245 }
1246 else
1247 {
1248 SH_MUTEX_LOCK(mutex_thread_nolog);
1249 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
1250 MSG_PCK_HIDDEN,
1251 (unsigned long) i, tests);
1252 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1253 }
1254 }
1255 }
1256 }
1257
1258 /*
1259 * case 3: in ps, but not found
1260 */
1261 else
1262 {
1263 if (((res[j] & SH_PR_PS) != 0) && ((res[j] & SH_PR_PS2) != 0))
1264 {
1265 if (S_FALSE == is_in_list(&list_fake, NULL, i))
1266 {
1267 SH_MUTEX_LOCK(mutex_thread_nolog);
1268 sh_error_handle(sh_prochk_severity, FIL__, __LINE__, 0,
1269 MSG_PCK_FAKE,
1270 (unsigned long) i, tests);
1271 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1272 }
1273 }
1274 }
1275 }
1276 } /* loop end */
1277
1278 check_watchlist (res);
1279
1280 SL_RETURN (0, _("sh_process_check_int"));
1281}
1282
1283/* Initialise.
1284 */
1285static int sh_prochk_init_internal(void)
1286{
1287 SL_ENTER(_("sh_prochk_init"));
1288
1289 (void) proc_max_pid (&sh_prochk_maxpid);
1290
1291 if (sh_prochk_minpid > sh_prochk_maxpid)
1292 ShProchkActive = S_FALSE;
1293
1294 /* We need to free anything allocated by the configuration functions if
1295 * we find that the module is to be left inactive - otherwise _reconf()
1296 * won't quite work.
1297 */
1298 if( ShProchkActive == S_FALSE )
1299 {
1300 sh_prochk_free_list(process_check);
1301 process_check = NULL;
1302 SL_RETURN(-1, _("sh_prochk_init"));
1303 }
1304
1305 sh_prochk_size = sh_prochk_maxpid - sh_prochk_minpid;
1306
1307 if (sh_prochk_res == NULL)
1308 {
1309 sh_prochk_res = SH_ALLOC(sizeof(short) * sh_prochk_size);
1310 }
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 else if (arg != NULL && arg->initval == SH_MOD_THREAD &&
1334 (sh.flag.isdaemon == S_TRUE || sh.flag.loop == S_TRUE))
1335 {
1336 sh_prochk_init_internal();
1337 return SH_MOD_THREAD;
1338 }
1339#endif
1340 return sh_prochk_init_internal();
1341}
1342
1343int sh_prochk_timer(time_t tcurrent)
1344{
1345 static time_t lastcheck = 0;
1346
1347 SL_ENTER(_("sh_prochk_timer"));
1348 if ((time_t) (tcurrent - lastcheck) >= sh_prochk_interval)
1349 {
1350 lastcheck = tcurrent;
1351 SL_RETURN((-1), _("sh_prochk_timer"));
1352 }
1353 SL_RETURN(0, _("sh_prochk_timer"));
1354}
1355
1356int sh_prochk_check(void)
1357{
1358 int status;
1359
1360 SL_ENTER(_("sh_prochk_check"));
1361
1362 SH_MUTEX_LOCK(mutex_proc_check);
1363
1364 status = 0;
1365
1366 if( ShProchkActive != S_FALSE )
1367 {
1368 SH_MUTEX_LOCK(mutex_thread_nolog);
1369 sh_error_handle((-1), FIL__, __LINE__, 0, MSG_PCK_CHECK,
1370 (unsigned long) sh_prochk_minpid,
1371 (unsigned long) (sh_prochk_maxpid-1));
1372 SH_MUTEX_UNLOCK(mutex_thread_nolog);
1373
1374 if (sh_prochk_res) {
1375 memset (sh_prochk_res, 0, sizeof(short) * sh_prochk_size);
1376 }
1377 status = sh_process_check_int(sh_prochk_res);
1378
1379 if (status != 0)
1380 ShProchkActive = S_FALSE;
1381
1382 /* clean out old entries which are not marked
1383 * as missing/hidden/fake anymore
1384 */
1385 clean_list (&list_missing);
1386 clean_list (&list_hidden);
1387 clean_list (&list_fake);
1388 }
1389
1390 SH_MUTEX_UNLOCK(mutex_proc_check);
1391
1392 SL_RETURN(status, _("sh_prochk_check"));
1393}
1394
1395/* Free our lists and the associated memory
1396 */
1397int sh_prochk_cleanup(void)
1398{
1399 SL_ENTER(_("sh_prochk_cleanup"));
1400
1401 sh_prochk_reconf();
1402
1403 if (list_missing) {
1404 kill_list(list_missing);
1405 list_missing = NULL;
1406 }
1407 if (list_hidden) {
1408 kill_list(list_hidden);
1409 list_hidden = NULL;
1410 }
1411 if (list_fake) {
1412 kill_list(list_fake);
1413 list_fake = NULL;
1414 }
1415
1416 SL_RETURN(0, _("sh_prochk_cleanup"));
1417}
1418
1419/* Free our lists and the associated memory
1420 */
1421int sh_prochk_reconf(void)
1422{
1423 SL_ENTER(_("sh_prochk_reconf"));
1424
1425 SH_MUTEX_LOCK(mutex_proc_check);
1426 userdef_maxpid = 0;
1427 sh_prochk_maxpid = 0x8000;
1428 sh_prochk_minpid = 0x0001;
1429 sh_prochk_interval = SH_PROCHK_INTERVAL;
1430 sh_prochk_openvz = S_FALSE;
1431 p_store = 0;
1432 openvz_hidden = 0;
1433
1434 sh_prochk_free_list(process_check);
1435 process_check = NULL;
1436 if (sh_prochk_res != NULL)
1437 SH_FREE(sh_prochk_res);
1438 sh_prochk_res = NULL;
1439
1440 if (sh_prochk_psarg)
1441 SH_FREE(sh_prochk_psarg);
1442 sh_prochk_psarg = NULL;
1443 if (sh_prochk_pspath)
1444 SH_FREE(sh_prochk_pspath);
1445 sh_prochk_pspath = NULL;
1446 SH_MUTEX_UNLOCK(mutex_proc_check);
1447
1448 SL_RETURN(0, _("sh_prochk_reconf"));
1449}
1450
1451/* #if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE) */
1452#endif
1453
1454/* #ifdef SH_USE_PROCESSCHECK */
1455#endif
1456
1457
1458#ifdef SH_CUTEST
1459#include "CuTest.h"
1460
1461void Test_processcheck_watchlist_ok (CuTest *tc) {
1462#if defined(SH_USE_PROCESSCHECK) && (defined(SH_WITH_CLIENT) || defined(SH_STANDALONE))
1463 CuAssertTrue(tc, 0 == sh_prochk_add_process("init"));
1464 CuAssertTrue(tc,
1465 S_TRUE == is_in_watchlist(" 1 ? 00:00:00 init", 0));
1466 CuAssertTrue(tc,
1467 S_FALSE == is_in_watchlist(" 1 ? 00:00:00 flix", 0));
1468 CuAssertTrue(tc,
1469 S_TRUE == is_in_watchlist("25218 ? SNs 0:01 /usr/sbin/init -k start -DSSL", 0));
1470 CuAssertTrue(tc,
1471 S_FALSE == is_in_watchlist("25218 ? SNs 0:01 /usr/sbin/apache2 -k start -DSSL", 0));
1472
1473
1474 sh_prochk_free_list(process_check);
1475 process_check = NULL;
1476 CuAssertTrue(tc, S_FALSE == is_in_watchlist("init", 0));
1477
1478 CuAssertTrue(tc, 0 == sh_prochk_add_process("init"));
1479 CuAssertTrue(tc, 0 == sh_prochk_add_process("ssh"));
1480 CuAssertTrue(tc, 0 == sh_prochk_add_process("syslog"));
1481 CuAssertTrue(tc, S_TRUE == is_in_watchlist("init", 0));
1482 CuAssertTrue(tc, S_TRUE == is_in_watchlist("ssh", 0));
1483 CuAssertTrue(tc, S_TRUE == is_in_watchlist("syslog", 0));
1484
1485 sh_prochk_free_list(process_check);
1486 process_check = NULL;
1487 CuAssertTrue(tc, S_FALSE == is_in_watchlist("init", 0));
1488 CuAssertTrue(tc, S_FALSE == is_in_watchlist("ssh", 0));
1489 CuAssertTrue(tc, S_FALSE == is_in_watchlist("syslog", 0));
1490#else
1491 (void) tc; /* fix compiler warning */
1492#endif
1493 return;
1494}
1495
1496void Test_processcheck_listhandle_ok (CuTest *tc) {
1497#if defined(SH_USE_PROCESSCHECK) && (defined(SH_WITH_CLIENT) || defined(SH_STANDALONE))
1498 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "init", 0));
1499 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1500 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "foobar", 0));
1501 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1502
1503 if (list_missing)
1504 kill_list(list_missing);
1505 list_missing = NULL;
1506
1507 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "init", 0));
1508 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1509 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "foobar", 0));
1510 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1511
1512 if (list_missing)
1513 kill_list(list_missing);
1514 list_missing = NULL;
1515
1516 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "init", 0));
1517 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "init", 0));
1518 CuAssertTrue(tc, S_FALSE == is_in_list(&list_missing, "foobar", 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, S_TRUE == is_in_list(&list_missing, "init", 0));
1525 CuAssertTrue(tc, S_TRUE == is_in_list(&list_missing, "foobar", 0));
1526
1527 CuAssertTrue(tc, 2 == clean_list(&list_missing));
1528 CuAssertPtrNotNull(tc, list_missing);
1529
1530 CuAssertTrue(tc, 0 == clean_list(&list_missing));
1531 CuAssertTrue(tc, NULL == list_missing);
1532#else
1533 (void) tc; /* fix compiler warning */
1534#endif
1535 return;
1536}
1537
1538
1539/* #ifdef SH_CUTEST */
1540#endif
1541
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