source: branches/samhain-2_2-branch/src/sh_suidchk.c@ 303

Last change on this file since 303 was 61, checked in by rainer, 18 years ago

Fix for MacOX X problems and Cygwin compile problem, resolves tickets #33, #34, #35.
File size: 47.9 KB
Line 
1/* SAMHAIN file system integrity testing */
2/* Copyright (C) 2001 Rainer Wichmann */
3/* */
4/* This program is free software; you can redistribute it */
5/* and/or modify */
6/* it under the terms of the GNU General Public License as */
7/* published by */
8/* the Free Software Foundation; either version 2 of the License, or */
9/* (at your option) any later version. */
10/* */
11/* This program is distributed in the hope that it will be useful, */
12/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
13/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
14/* GNU General Public License for more details. */
15/* */
16/* You should have received a copy of the GNU General Public License */
17/* along with this program; if not, write to the Free Software */
18/* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20#include "config_xor.h"
21
22
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <sys/types.h>
27#include <sys/stat.h>
28#include <fcntl.h>
29#include <unistd.h>
30#include <errno.h>
31#include <limits.h>
32#ifdef HAVE_LIBGEN_H
33#include <libgen.h>
34#endif
35#ifdef HAVE_SCHED_H
36#include <sched.h>
37#endif
38
39#ifdef SH_USE_SUIDCHK
40
41#ifndef HAVE_BASENAME
42#define basename(a) ((NULL == strrchr(a, '/')) ? (a) : (strrchr(a, '/')))
43#endif
44
45#undef FIL__
46#define FIL__ _("sh_suidchk.c")
47
48#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
49
50#if TIME_WITH_SYS_TIME
51#include <sys/time.h>
52#include <time.h>
53#else
54#if HAVE_SYS_TIME_H
55#include <sys/time.h>
56#else
57#include <time.h>
58#endif
59#endif
60
61#ifdef HAVE_DIRENT_H
62#include <dirent.h>
63#define NAMLEN(dirent) sl_strlen((dirent)->d_name)
64#else
65#define dirent direct
66#define NAMLEN(dirent) (dirent)->d_namlen
67#ifdef HAVE_SYS_NDIR_H
68#include <sys/ndir.h>
69#endif
70#ifdef HAVE_SYS_DIR_H
71#include <sys/dir.h>
72#endif
73#ifdef HAVE_NDIR_H
74#include <ndir.h>
75#endif
76#endif
77
78#include "samhain.h"
79#include "sh_utils.h"
80#include "sh_error.h"
81#include "sh_modules.h"
82#include "sh_suidchk.h"
83#include "sh_hash.h"
84#include "sh_unix.h"
85#include "sh_files.h"
86#include "sh_schedule.h"
87#include "sh_calls.h"
88
89
90sh_rconf sh_suidchk_table[] = {
91 {
92 N_("severitysuidcheck"),
93 sh_suidchk_set_severity
94 },
95 {
96 N_("suidcheckactive"),
97 sh_suidchk_set_activate
98 },
99 {
100 N_("suidcheckinterval"),
101 sh_suidchk_set_timer
102 },
103 {
104 N_("suidcheckschedule"),
105 sh_suidchk_set_schedule
106 },
107 {
108 N_("suidcheckexclude"),
109 sh_suidchk_set_exclude
110 },
111 {
112 N_("suidcheckfps"),
113 sh_suidchk_set_fps
114 },
115 {
116 N_("suidcheckyield"),
117 sh_suidchk_set_yield
118 },
119 {
120 N_("suidcheckquarantinefiles"),
121 sh_suidchk_set_quarantine
122 },
123 {
124 N_("suidcheckquarantinemethod"),
125 sh_suidchk_set_qmethod
126 },
127 {
128 N_("suidcheckquarantinedelete"),
129 sh_suidchk_set_qdelete
130 },
131 {
132 NULL,
133 NULL
134 },
135};
136
137
138static time_t lastcheck = (time_t) 0;
139static int ShSuidchkActive = S_TRUE;
140static time_t ShSuidchkInterval = 7200;
141static long ShSuidchkFps = 0;
142static int ShSuidchkYield = S_FALSE;
143static int ShSuidchkQEnable = S_FALSE;
144static int ShSuidchkQMethod = SH_Q_CHANGEPERM;
145static int ShSuidchkQDelete = S_FALSE;
146static int ShSuidchkSeverity = SH_ERR_SEVERE;
147static char * ShSuidchkExclude = NULL;
148static int ExcludeLen = 0;
149
150static time_t FileLimNow = 0;
151static time_t FileLimStart = 0;
152static long FileLimNum = 0;
153static long FileLimTotal = 0;
154
155static sh_schedule_t * ShSuidchkSched = NULL;
156
157static char *
158filesystem_type (char * path, char * relpath, struct stat * statp);
159
160#ifndef PATH_MAX
161#define PATH_MAX 1024
162#endif
163
164extern unsigned long sh_files_maskof (int class);
165
166/* Recursively descend into the directory to make sure that
167 * there is no symlink in the path.
168 */
169static int do_truncate_int (char * path, int depth)
170{
171 char * q;
172 struct stat one;
173 struct stat two;
174 int fd;
175
176 if (depth > 99)
177 {
178 sh_error_handle ((-1), FIL__, __LINE__, EINVAL,
179 MSG_SUID_ERROR,
180 _("do_truncate: max depth 99 exceeded"));
181 return -1;
182 }
183 ++depth;
184 if (path[0] != '/')
185 {
186 sh_error_handle ((-1), FIL__, __LINE__, EINVAL,
187 MSG_SUID_ERROR,
188 _("do_truncate: not an absolute path"));
189 return -1;
190 }
191 ++path;
192 q = strchr(path, '/');
193 if (q)
194 {
195 *q = '\0';
196 if (0 != retry_lstat(FIL__, __LINE__, path, &one))
197 {
198 sh_error_handle ((-1), FIL__, __LINE__, errno,
199 MSG_SUID_ERROR,
200 sh_error_message(errno));
201 *q = '/';
202 return -1;
203 }
204 if (/*@-usedef@*/!S_ISDIR(one.st_mode)/*@+usedef@*/)
205
206 {
207 sh_error_handle ((-1), FIL__, __LINE__, EINVAL,
208 MSG_SUID_ERROR,
209 _("Possible race: not a directory"));
210 *q = '/';
211 return -1;
212 }
213
214
215 if (0 != chdir(path))
216 {
217 sh_error_handle ((-1), FIL__, __LINE__, errno,
218 MSG_SUID_ERROR,
219 sh_error_message(errno));
220 *q = '/';
221 return -1;
222 }
223 *q = '/';
224 if (0 != retry_lstat(FIL__, __LINE__, ".", &two))
225 {
226 sh_error_handle ((-1), FIL__, __LINE__, errno,
227 MSG_SUID_ERROR,
228 sh_error_message(errno));
229 return -1;
230 }
231 if (/*@-usedef@*/(one.st_dev != two.st_dev) ||
232 (one.st_ino != two.st_ino) ||
233 (!S_ISDIR(two.st_mode))/*@+usedef@*/)
234 {
235 sh_error_handle ((-1), FIL__, __LINE__, EINVAL,
236 MSG_SUID_ERROR,
237 _("Possible race: lstat(dir) != lstat(.)"));
238 return -1;
239 }
240
241
242 return (do_truncate_int(q, depth));
243 }
244 else
245 {
246 /* no more '/', so this is the file
247 */
248 if (*path == '\0')
249 return -1;
250 if (0 != retry_lstat(FIL__, __LINE__, path, &one))
251 {
252 sh_error_handle ((-1), FIL__, __LINE__, errno,
253 MSG_SUID_ERROR,
254 sh_error_message(errno));
255 return -1;
256 }
257 fd = open(path, O_RDWR);
258 if (-1 == fd)
259 {
260 sh_error_handle ((-1), FIL__, __LINE__, errno,
261 MSG_SUID_ERROR,
262 sh_error_message(errno));
263 return -1;
264 }
265 if (0 != retry_fstat(FIL__, __LINE__, fd, &two))
266 {
267 sh_error_handle ((-1), FIL__, __LINE__, errno,
268 MSG_SUID_ERROR,
269 sh_error_message(errno));
270 (void) close(fd);
271 return -1;
272 }
273 if (/*@-usedef@*/(one.st_dev != two.st_dev) ||
274 (one.st_ino != two.st_ino)/*@+usedef@*/)
275 {
276 sh_error_handle ((-1), FIL__, __LINE__, EINVAL,
277 MSG_SUID_ERROR,
278 _("Possible race: lstat != fstat"));
279 (void) close(fd);
280 return -1;
281 }
282 if (!S_ISREG(two.st_mode))
283 {
284 sh_error_handle ((-1), FIL__, __LINE__, EINVAL,
285 MSG_SUID_ERROR,
286 _("Possible race: not a regular file"));
287 (void) close(fd);
288 return -1;
289 }
290 if ((0 == (two.st_mode & S_ISUID)) && (0 == (two.st_mode & S_ISGID)))
291 {
292 sh_error_handle ((-1), FIL__, __LINE__, EINVAL,
293 MSG_SUID_ERROR,
294 _("Possible race: not a suid/sgid file"));
295 (void) close(fd);
296 return -1;
297 }
298 if (ShSuidchkQDelete == S_FALSE)
299 {
300 if ((two.st_mode & S_ISUID) > 0)
301 two.st_mode -= S_ISUID;
302 if ((two.st_mode & S_ISGID) > 0)
303 two.st_mode -= S_ISGID;
304#ifdef HAVE_FCHMOD
305 if (-1 == /*@-unrecog@*/fchmod(fd, two.st_mode)/*@+unrecog@*/)
306 {
307 sh_error_handle ((-1), FIL__, __LINE__, errno,
308 MSG_SUID_ERROR,
309 sh_error_message(errno));
310 (void) close(fd);
311 return -1;
312 }
313#else
314 sh_error_handle ((-1), FIL__, __LINE__, errno,
315 MSG_SUID_ERROR,
316 _("The fchmod() function is not available"));
317 (void) close(fd);
318 return -1;
319#endif
320 if (two.st_nlink > 1)
321 {
322 sh_error_handle ((-1), FIL__, __LINE__, 0,
323 MSG_SUID_ERROR,
324 _("Not truncated because hardlink count gt 1"));
325 (void) close(fd);
326 return -1;
327 }
328 /* The man page says: 'POSIX has ftruncate'
329 */
330 if (-1 == /*@-unrecog@*/ftruncate(fd, 0)/*@+unrecog@*/)
331 {
332 sh_error_handle ((-1), FIL__, __LINE__, errno,
333 MSG_SUID_ERROR,
334 sh_error_message(errno));
335 (void) close(fd);
336 return -1;
337 }
338 }
339 else
340 {
341 if (-1 == retry_aud_unlink(FIL__, __LINE__, path))
342 {
343 sh_error_handle ((-1), FIL__, __LINE__, errno,
344 MSG_SUID_ERROR,
345 sh_error_message(errno));
346 (void) close(fd);
347 return -1;
348 }
349 }
350 (void) close (fd);
351 return (0);
352 }
353}
354
355static int do_truncate (char * path)
356{
357 int caperr;
358 int result;
359
360 if (0 != chdir("/"))
361 {
362 sh_error_handle ((-1), FIL__, __LINE__, errno,
363 MSG_SUID_ERROR,
364 sh_error_message(errno));
365 }
366
367 if (0 != (caperr = sl_get_cap_qdel()))
368 {
369 sh_error_handle((-1), FIL__, __LINE__, caperr, MSG_E_SUBGEN,
370 sh_error_message (caperr),
371 _("sl_get_cap_qdel"));
372 }
373
374 result = do_truncate_int (path, 0);
375
376 if (0 != (caperr = sl_drop_cap_qdel()))
377 {
378 sh_error_handle((-1), FIL__, __LINE__, caperr, MSG_E_SUBGEN,
379 sh_error_message (caperr),
380 _("sl_drop_cap_qdel"));
381 }
382
383 if (0 != chdir("/"))
384 {
385 sh_error_handle ((-1), FIL__, __LINE__, errno,
386 MSG_SUID_ERROR,
387 sh_error_message(errno));
388 }
389 return result;
390}
391
392static
393int sh_suidchk_check_internal (char * iname)
394{
395 int caperr;
396 DIR * thisDir = NULL;
397 FILE * filePtr = NULL;
398 struct dirent * thisEntry;
399 char * tmpcat;
400 char * tmp;
401 char * msg;
402 char * dir;
403 char * filetmp;
404 char * basetmp;
405 char timestrc[32];
406 char timestra[32];
407 char timestrm[32];
408 char buffer[1024];
409 struct stat buf;
410 int status;
411 int count;
412 int readFile = -1;
413 int writeFile = -1;
414 char * fs;
415 long sl_status = SL_ENONE;
416 struct stat fileInfo;
417 struct stat fileInfo_F;
418 int file_d;
419
420 file_type theFile;
421 char fileHash[2*(KEY_LEN + 1)];
422
423 mode_t umask_old;
424 int cperm_status;
425
426 SL_ENTER(_("sh_suidchk_check_internal"));
427
428 if (iname == NULL)
429 {
430 TPT((0, FIL__, __LINE__ , _("msg=<directory name is NULL>\n")));
431 SL_RETURN( (-1), _("sh_suidchk_check_internal"));
432 }
433
434 if (sig_urgent > 0) {
435 SL_RETURN( (0), _("sh_suidchk_check_internal"));
436 }
437
438 thisDir = opendir (iname);
439
440 if (thisDir == NULL)
441 {
442 status = errno;
443 tmp = sh_util_safe_name(iname);
444 sh_error_handle (ShDFLevel[SH_ERR_T_DIR], FIL__, __LINE__, status,
445 MSG_E_OPENDIR,
446 sh_error_message (status), tmp);
447 SH_FREE(tmp);
448 SL_RETURN( (-1), _("sh_suidchk_check_internal"));
449 }
450
451 do {
452
453 if (sig_urgent > 0) {
454 SL_RETURN( (0), _("sh_suidchk_check_internal"));
455 }
456
457
458 thisEntry = readdir (thisDir);
459
460 if (thisEntry != NULL) {
461
462 if (sl_strcmp (thisEntry->d_name, ".") == 0)
463 continue;
464
465 if (sl_strcmp (thisEntry->d_name, "..") == 0)
466 continue;
467
468 tmpcat = SH_ALLOC(PATH_MAX);
469 (void) sl_strlcpy(tmpcat, iname, PATH_MAX);
470
471 if ((sl_strlen(tmpcat) != sl_strlen(iname)) || (tmpcat[0] == '\0'))
472 sl_status = SL_ETRUNC;
473 else
474 {
475 if (tmpcat[1] != '\0')
476 sl_status = sl_strlcat(tmpcat, "/", PATH_MAX);
477 }
478 if (! SL_ISERROR(sl_status))
479 sl_status = sl_strlcat(tmpcat, thisEntry->d_name, PATH_MAX);
480 if (SL_ISERROR(sl_status))
481 {
482 tmp = sh_util_safe_name(tmpcat);
483 sh_error_handle ((-1), FIL__, __LINE__, (int) sl_status,
484 MSG_E_SUBGPATH,
485 _("path too long"),
486 _("sh_suidchk_check_internal"), tmp );
487 SH_FREE(tmp);
488 continue;
489 }
490
491 ++FileLimNum;
492 ++FileLimTotal;
493
494 if ((ShSuidchkFps > 0 && FileLimNum > ShSuidchkFps && FileLimTotal > 0)&&
495 (ShSuidchkYield == S_FALSE))
496 {
497 FileLimNum = 0;
498 FileLimNow = time(NULL);
499
500 if ( (FileLimNow - FileLimStart) > 0 &&
501 FileLimTotal/(FileLimNow - FileLimStart) > ShSuidchkFps )
502 (void) retry_msleep((int)((FileLimTotal/(FileLimNow-FileLimStart))/
503 ShSuidchkFps) , 0);
504 }
505
506 status = (int) retry_lstat(FIL__, __LINE__, tmpcat, &buf);
507
508 if (status != 0)
509 {
510 status = errno;
511 tmp = sh_util_safe_name(tmpcat);
512 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, status, MSG_ERR_LSTAT,
513 sh_error_message(status),
514 tmpcat );
515 SH_FREE(tmp);
516 }
517 else
518 {
519 if (/*@-usedef@*/S_ISDIR(buf.st_mode)/*@+usedef@*/ &&
520 (ShSuidchkExclude == NULL ||
521 0 != strcmp(tmpcat, ShSuidchkExclude)))
522 {
523 /* fs is a STATIC string or NULL
524 */
525 fs = filesystem_type (tmpcat, tmpcat, &buf);
526 if (fs != NULL
527#ifndef SH_SUIDTESTDIR
528 &&
529 0 != strncmp (_("afs"), fs, 3) &&
530 0 != strncmp (_("devfs"), fs, 5) &&
531 0 != strncmp (_("iso9660"), fs, 7) &&
532 0 != strncmp (_("lustre"), fs, 6) &&
533 0 != strncmp (_("mmfs"), fs, 4) &&
534 0 != strncmp (_("msdos"), fs, 5) &&
535 0 != strncmp (_("nfs"), fs, 3) &&
536 0 != strncmp (_("nosuid"), fs, 6) &&
537 0 != strncmp (_("proc"), fs, 4) &&
538 0 != strncmp (_("vfat"), fs, 4)
539#endif
540 )
541 {
542 /* fprintf(stderr, "%s: %s\n", fs, tmpcat); */
543 (void) sh_suidchk_check_internal(tmpcat);
544 }
545 }
546 else if (S_ISREG(buf.st_mode) &&
547 (0 !=(S_ISUID & buf.st_mode) ||
548#if defined(HOST_IS_LINUX)
549 (0 !=(S_ISGID & buf.st_mode) &&
550 0 !=(S_IXGRP & buf.st_mode))
551#else
552 0 !=(S_ISGID & buf.st_mode)
553#endif
554 )
555 )
556 {
557
558 (void) sl_strlcpy (theFile.fullpath, tmpcat, PATH_MAX);
559 theFile.check_mask = sh_files_maskof(SH_LEVEL_READONLY);
560 theFile.reported = S_FALSE;
561 status = sh_unix_getinfo (ShDFLevel[SH_ERR_T_RO],
562 thisEntry->d_name,
563 &theFile, fileHash, 0);
564
565 tmp = sh_util_safe_name(tmpcat);
566
567 if (status != 0)
568 {
569 sh_error_handle (ShSuidchkSeverity, FIL__, __LINE__,
570 0, MSG_E_SUBGPATH,
571 _("Could not check suid/sgid file"),
572 _("sh_suidchk_check_internal"),
573 tmp);
574 }
575 else
576 {
577 if (sh.flag.update == S_TRUE &&
578 (sh.flag.checkSum == SH_CHECK_INIT ||
579 sh.flag.checkSum == SH_CHECK_CHECK))
580 {
581 if (-1 == sh_hash_have_it (tmpcat))
582 {
583 sh_error_handle ((-1), FIL__, __LINE__,
584 0, MSG_SUID_FOUND,
585 tmp );
586 }
587 else
588 {
589 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__,
590 0, MSG_SUID_FOUND,
591 tmp );
592 }
593 if (0 == sh_hash_compdata (SH_LEVEL_READONLY,
594 &theFile, fileHash,
595 _("[SuidCheck]"),
596 ShSuidchkSeverity))
597 {
598 sh_hash_pushdata_memory (&theFile, fileHash);
599 }
600 }
601 else if (sh.flag.checkSum == SH_CHECK_INIT &&
602 sh.flag.update == S_FALSE )
603 {
604 sh_hash_pushdata (&theFile, fileHash);
605 sh_error_handle ((-1), FIL__, __LINE__,
606 0, MSG_SUID_FOUND,
607 tmp );
608 }
609 else if (sh.flag.checkSum == SH_CHECK_CHECK )
610 {
611 sh_error_handle (SH_ERR_ALL, FIL__, __LINE__,
612 0, MSG_SUID_FOUND,
613 tmp );
614 if (-1 == sh_hash_have_it (tmpcat))
615 {
616 msg = SH_ALLOC(SH_BUFSIZE);
617 msg[0] = '\0';
618 /*@-usedef@*/
619 (void) sl_strlcpy (timestrc,
620 sh_unix_gmttime (theFile.ctime),
621 32);
622 (void) sl_strlcpy (timestra,
623 sh_unix_gmttime (theFile.atime),
624 32);
625 (void) sl_strlcpy (timestrm,
626 sh_unix_gmttime (theFile.mtime),
627 32);
628#ifdef SH_USE_XML
629 (void) sl_snprintf(msg, SH_BUFSIZE, _("owner_new=\"%s\" iowner_new=\"%ld\" group_new=\"%s\" igroup_new=\"%ld\" size_new=\"%lu\" ctime_new=\"%s\" atime_new=\"%s\" mtime_new=\"%s\""),
630 theFile.c_owner, theFile.owner,
631 theFile.c_group, theFile.group,
632 (unsigned long) theFile.size,
633 timestrc, timestra, timestrm);
634#else
635 (void) sl_snprintf(msg, SH_BUFSIZE, _("owner_new=<%s>, iowner_new=<%ld>, group_new=<%s>, igroup_new=<%ld>, filesize=<%lu>, ctime=<%s>, atime=<%s>, mtime=<%s>"),
636 theFile.c_owner, theFile.owner,
637 theFile.c_group, theFile.group,
638 (unsigned long) theFile.size,
639 timestrc, timestra, timestrm);
640#endif
641 /*@+usedef@*/
642
643 sh_error_handle (ShSuidchkSeverity, FIL__, __LINE__,
644 0, MSG_SUID_POLICY,
645 _("suid/sgid file not in database"),
646 tmp, msg );
647 SH_FREE(msg);
648
649 /* Quarantine file according to configured method
650 */
651 if (ShSuidchkQEnable == S_TRUE)
652 {
653 switch (ShSuidchkQMethod)
654 {
655 case SH_Q_DELETE:
656 /* if (unlink (theFile.fullpath) == -1) */
657 if (do_truncate (theFile.fullpath) == -1)
658 {
659 status = errno;
660 msg = SH_ALLOC(SH_BUFSIZE);
661 (void) sl_snprintf(msg, SH_BUFSIZE, _("Problem quarantining file. File NOT quarantined. errno = %ld"), status);
662 sh_error_handle (ShSuidchkSeverity,
663 FIL__, __LINE__,
664 status,
665 MSG_SUID_QREPORT, msg,
666 tmp );
667 SH_FREE(msg);
668 }
669 else
670 {
671 sh_error_handle (ShSuidchkSeverity,
672 FIL__, __LINE__, 0,
673 MSG_SUID_QREPORT,
674 _("Quarantine method applied"),
675 tmp );
676 }
677 break;
678 case SH_Q_CHANGEPERM:
679 cperm_status = 0;
680 file_d = -1;
681 if (retry_lstat(FIL__, __LINE__, tmpcat, &fileInfo) == -1)
682 {
683 status = errno;
684 msg = SH_ALLOC(SH_BUFSIZE);
685 (void) sl_snprintf(msg, SH_BUFSIZE, _("I/O error. errno = %ld"), status);
686 sh_error_handle (ShSuidchkSeverity,
687 FIL__, __LINE__,
688 status,
689 MSG_SUID_QREPORT, msg,
690 tmp );
691 SH_FREE(msg);
692 cperm_status = -1;
693 }
694
695 if (cperm_status == 0)
696 {
697 if (0 != (caperr = sl_get_cap_qdel()))
698 {
699 sh_error_handle((-1), FIL__, __LINE__,
700 caperr, MSG_E_SUBGEN,
701 sh_error_message (caperr),
702 _("sl_get_cap_qdel"));
703 cperm_status = -1;
704 }
705 }
706
707 if (cperm_status == 0)
708 {
709 file_d = aud_open (FIL__, __LINE__, SL_YESPRIV,
710 tmpcat, O_RDONLY, 0);
711 if (-1 == file_d)
712 {
713 status = errno;
714 msg = SH_ALLOC(SH_BUFSIZE);
715 (void) sl_snprintf(msg, SH_BUFSIZE, _("I/O error. errno = %ld"), status);
716 sh_error_handle (ShSuidchkSeverity,
717 FIL__, __LINE__,
718 status,
719 MSG_SUID_QREPORT, msg,
720 tmp );
721 SH_FREE(msg);
722 cperm_status = -1;
723 }
724 }
725
726 if (cperm_status == 0)
727 {
728 if (retry_fstat(FIL__, __LINE__, file_d, &fileInfo_F) == -1)
729 {
730 status = errno;
731 msg = SH_ALLOC(SH_BUFSIZE);
732 (void) sl_snprintf(msg, SH_BUFSIZE,
733 _("I/O error. errno = %ld"), status);
734 sh_error_handle (ShSuidchkSeverity,
735 FIL__, __LINE__,
736 status,
737 MSG_SUID_QREPORT, msg,
738 tmp );
739 SH_FREE(msg);
740 cperm_status = -1;
741 }
742 }
743
744 if (cperm_status == 0)
745 {
746 if (fileInfo_F.st_ino != fileInfo.st_ino ||
747 fileInfo_F.st_dev != fileInfo.st_dev ||
748 fileInfo_F.st_mode != fileInfo.st_mode)
749 {
750 status = errno;
751 msg = SH_ALLOC(SH_BUFSIZE);
752 (void) sl_snprintf(msg, SH_BUFSIZE,
753 _("Race detected. errno = %ld"), status);
754 sh_error_handle (ShSuidchkSeverity,
755 FIL__, __LINE__,
756 status,
757 MSG_SUID_QREPORT, msg,
758 tmp );
759 SH_FREE(msg);
760 cperm_status = -1;
761 }
762 }
763
764 if ((fileInfo.st_mode & S_ISUID) > 0)
765 fileInfo.st_mode -= S_ISUID;
766 if ((fileInfo.st_mode & S_ISGID) > 0)
767 fileInfo.st_mode -= S_ISGID;
768
769 if (cperm_status == 0)
770 {
771 if (fchmod(file_d, fileInfo.st_mode) == -1)
772 {
773 status = errno;
774 msg = SH_ALLOC(SH_BUFSIZE);
775 (void) sl_snprintf(msg, SH_BUFSIZE, _("Problem quarantining file. File NOT quarantined. errno = %ld"), status);
776 sh_error_handle (ShSuidchkSeverity,
777 FIL__, __LINE__,
778 status,
779 MSG_SUID_QREPORT,
780 msg, tmp );
781 SH_FREE(msg);
782 }
783 else
784 {
785 sh_error_handle (ShSuidchkSeverity,
786 FIL__, __LINE__,
787 0,
788 MSG_SUID_QREPORT,
789 _("Quarantine method applied"),
790 tmp );
791 }
792 }
793
794 if (0 != (caperr = sl_drop_cap_qdel()))
795 {
796 sh_error_handle((-1), FIL__, __LINE__,
797 caperr, MSG_E_SUBGEN,
798 sh_error_message (caperr),
799 _("sl_drop_cap_qdel"));
800 }
801
802 if (file_d != -1)
803 {
804 do {
805 status = close (file_d);
806 } while (status == -1 && errno == EINTR);
807
808 if (-1 == status)
809 {
810 status = errno;
811 msg = SH_ALLOC(SH_BUFSIZE);
812 (void) sl_snprintf(msg, SH_BUFSIZE,
813 _("I/O error. errno = %ld"), status);
814 sh_error_handle (ShSuidchkSeverity,
815 FIL__, __LINE__,
816 status,
817 MSG_SUID_QREPORT, msg,
818 tmp );
819 SH_FREE(msg);
820 cperm_status = -1;
821 }
822 }
823 break;
824 case SH_Q_MOVE:
825 dir = SH_ALLOC(PATH_MAX+1);
826 (void) sl_strlcpy (dir, DEFAULT_QDIR, PATH_MAX+1);
827 if (retry_stat (FIL__, __LINE__, dir, &fileInfo) != 0)
828 {
829 status = errno;
830 msg = SH_ALLOC(SH_BUFSIZE);
831 (void) sl_snprintf(msg, SH_BUFSIZE, _("Problem quarantining file. File NOT quarantined. errno = %ld (stat)"), status);
832 sh_error_handle (ShSuidchkSeverity,
833 FIL__, __LINE__,
834 status,
835 MSG_SUID_QREPORT, msg,
836 tmp );
837 SH_FREE(msg);
838 }
839 else
840 {
841 if (retry_lstat (FIL__, __LINE__,
842 theFile.fullpath, &fileInfo) == -1)
843 {
844 status = errno;
845 msg = SH_ALLOC(SH_BUFSIZE);
846 (void) sl_snprintf(msg, SH_BUFSIZE, _("I/O error. errno = %ld(stat)"), status);
847 sh_error_handle (ShSuidchkSeverity,
848 FIL__, __LINE__,
849 status,
850 MSG_SUID_QREPORT,
851 msg, tmp );
852 SH_FREE(msg);
853 }
854 else
855 {
856 basetmp = sh_util_strdup(theFile.fullpath);
857 filetmp = SH_ALLOC(PATH_MAX+1);
858 (void) sl_snprintf(filetmp, PATH_MAX+1, "%s/%s",
859 DEFAULT_QDIR, basename(basetmp));
860 SH_FREE(basetmp);
861
862 readFile = open (theFile.fullpath, O_RDONLY);
863 if (readFile != -1)
864 writeFile = open (filetmp, O_WRONLY|O_CREAT);
865
866 if ((readFile == -1) || (writeFile == -1))
867 {
868 status = errno;
869 msg = SH_ALLOC(SH_BUFSIZE);
870 (void) sl_snprintf(msg, SH_BUFSIZE, _("Problem quarantining file. File NOT quarantined. errno = %ld (open)"), status);
871 sh_error_handle (ShSuidchkSeverity,
872 FIL__, __LINE__, status,
873 MSG_SUID_QREPORT,
874 msg, tmp );
875 SH_FREE(msg);
876 }
877 else
878 {
879 /* sizeof(buffer) is 1024 */
880 while ((count = (int) read (readFile, buffer, sizeof (buffer))) > 0)
881 if ((int) write (writeFile, buffer, (size_t) count) != count)
882 {
883 status = errno;
884 msg = SH_ALLOC(SH_BUFSIZE);
885 (void) sl_snprintf(msg, SH_BUFSIZE, _("I/O error. errno = %ld (write)"), status);
886 sh_error_handle (ShSuidchkSeverity,
887 FIL__,
888 __LINE__,
889 status,
890 MSG_SUID_QREPORT,
891 msg, tmp );
892 SH_FREE(msg);
893 }
894 }
895 (void) close (readFile);
896 (void) fchmod(writeFile, S_IRUSR | S_IWUSR | S_IXUSR);
897 (void) close (writeFile);
898 /* if (unlink (theFile.fullpath) == -1) */
899 if (do_truncate (theFile.fullpath) == -1)
900 {
901 status = errno;
902 msg = SH_ALLOC(SH_BUFSIZE);
903 (void) sl_snprintf(msg, SH_BUFSIZE, _("Problem quarantining file. File NOT quarantined. errno = %ld"), status);
904 sh_error_handle (ShSuidchkSeverity,
905 FIL__, __LINE__, status,
906 MSG_SUID_QREPORT,
907 msg, tmp );
908 SH_FREE(msg);
909 }
910 else
911 {
912 (void) sl_snprintf(filetmp, PATH_MAX+1, "%s/%s.info",
913 DEFAULT_QDIR,
914 basename(theFile.fullpath));
915 /*
916 * avoid chmod by setting umask
917 */
918 umask_old = umask (0077);
919 filePtr = fopen (filetmp, "w+");
920 /*@-usedef@*/
921 if (filePtr)
922 {
923 fprintf(filePtr, _("File Info:\n filename=%s\n size=%lu\n owner=%s(%d)\n group=%s(%d)\n ctime=%s\n atime=%s\n mtime=%s\n"),
924 theFile.fullpath,
925 (unsigned long) theFile.size,
926 theFile.c_owner, (int) theFile.owner,
927 theFile.c_group, (int) theFile.group,
928 timestrc, timestra, timestrm);
929 (void) fclose (filePtr);
930 }
931 /*@+usedef@*/
932 umask (umask_old);
933
934 sh_error_handle (ShSuidchkSeverity,
935 FIL__,__LINE__,
936 0, MSG_SUID_QREPORT,
937 _("Quarantine method applied"),
938 tmp );
939 }
940 SH_FREE(filetmp);
941 }
942 }
943 SH_FREE(dir);
944 break;
945 default:
946 sh_error_handle (ShSuidchkSeverity, FIL__,
947 __LINE__, 0, MSG_SUID_QREPORT,
948 _("Bad quarantine method"),
949 tmp);
950 break;
951 }
952 }
953 else
954 {
955 /* 1.8.1 push file to in-memory database
956 */
957 (void) sh_hash_compdata (SH_LEVEL_READONLY,
958 &theFile, fileHash,
959 _("[SuidCheck]"),
960 ShSuidchkSeverity);
961 }
962 }
963 else
964 {
965 (void) sh_hash_compdata (SH_LEVEL_READONLY,
966 &theFile, fileHash,
967 _("[SuidCheck]"),
968 ShSuidchkSeverity);
969 }
970 }
971 }
972 SH_FREE(tmp);
973
974 }
975 }
976 SH_FREE(tmpcat);
977 }
978#ifdef HAVE_SCHED_YIELD
979 if (ShSuidchkYield == S_TRUE)
980 {
981 if (sched_yield() == -1)
982 {
983 status = errno;
984 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
985 _("Failed to release time slice"),
986 _("sh_suidchk_check_internal") );
987
988 }
989 }
990#endif
991 } while (thisEntry != NULL);
992
993 (void) closedir (thisDir);
994 SL_RETURN( (0), _("sh_suidchk_check_internal"));
995}
996
997/*************
998 *
999 * module init
1000 *
1001 *************/
1002int sh_suidchk_init ()
1003{
1004 if (ShSuidchkActive == S_FALSE)
1005 return (-1);
1006
1007 return (0);
1008}
1009
1010
1011/*************
1012 *
1013 * module cleanup
1014 *
1015 *************/
1016int sh_suidchk_end ()
1017{
1018 return (0);
1019}
1020
1021
1022/*************
1023 *
1024 * module timer
1025 *
1026 *************/
1027int sh_suidchk_timer (time_t tcurrent)
1028{
1029 if (sh.flag.checkSum == SH_CHECK_INIT)
1030 return -1;
1031
1032 /* One-shot (not daemon and not loop forever)
1033 */
1034 if (sh.flag.isdaemon != S_TRUE && sh.flag.loop == S_FALSE)
1035 return -1;
1036
1037 if (ShSuidchkSched != NULL)
1038 {
1039 return test_sched(ShSuidchkSched);
1040 }
1041 if ((time_t) (tcurrent - lastcheck) >= ShSuidchkInterval)
1042 {
1043 lastcheck = tcurrent;
1044 return (-1);
1045 }
1046 return 0;
1047}
1048
1049/*************
1050 *
1051 * module check
1052 *
1053 *************/
1054
1055int sh_suidchk_check ()
1056{
1057 int status;
1058
1059 SL_ENTER(_("sh_suidchk_check"));
1060
1061 sh_error_handle (SH_ERR_NOTICE, FIL__, __LINE__, EINVAL, MSG_E_SUBGEN,
1062 _("Checking for SUID programs"),
1063 _("suidchk_check") );
1064
1065 FileLimNow = time(NULL);
1066 FileLimStart = FileLimNow;
1067 FileLimNum = 0;
1068 FileLimTotal = 0;
1069
1070#ifdef SH_SUIDTESTDIR
1071 status = sh_suidchk_check_internal (SH_SUIDTESTDIR);
1072#else
1073 status = sh_suidchk_check_internal ("/");
1074#endif
1075
1076 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_SUID_SUMMARY,
1077 FileLimTotal,
1078 (long) (time(NULL) - FileLimStart) );
1079
1080 SL_RETURN(status, _("sh_suidchk_check"));
1081}
1082
1083/*************
1084 *
1085 * module setup
1086 *
1087 *************/
1088
1089int sh_suidchk_set_severity (char * c)
1090{
1091 int retval;
1092 char tmp[32];
1093
1094 SL_ENTER(_("sh_suidchk_set_severity"));
1095 tmp[0] = '='; tmp[1] = '\0';
1096 (void) sl_strlcat (tmp, c, 32);
1097 retval = sh_error_set_level (tmp, &ShSuidchkSeverity);
1098 SL_RETURN(retval, _("sh_suidchk_set_severity"));
1099}
1100
1101int sh_suidchk_set_exclude (char * c)
1102{
1103 SL_ENTER(_("sh_suidchk_set_exclude"));
1104 if (c == NULL || c[0] == '\0')
1105 {
1106 SL_RETURN(-1, _("sh_suidchk_set_exclude"));
1107 }
1108
1109 if (0 == sl_strncmp(c, _("NULL"), 4))
1110 {
1111 if (ShSuidchkExclude != NULL)
1112 SH_FREE(ShSuidchkExclude);
1113 ShSuidchkExclude = NULL;
1114 SL_RETURN(0, _("sh_suidchk_set_exclude"));
1115 }
1116
1117 if (ShSuidchkExclude != NULL)
1118 SH_FREE(ShSuidchkExclude);
1119
1120 ExcludeLen = (int) sl_strlen(c);
1121 if (c[ExcludeLen-1] == '/')
1122 {
1123 c[ExcludeLen-1] = '\0';
1124 ExcludeLen--;
1125 }
1126 ShSuidchkExclude = SH_ALLOC((size_t) ExcludeLen + 1);
1127 (void) sl_strlcpy(ShSuidchkExclude, c, (size_t)(ExcludeLen + 1));
1128
1129 SL_RETURN(0, _("sh_suidchk_set_exclude"));
1130}
1131
1132int sh_suidchk_set_timer (char * c)
1133{
1134 long val;
1135
1136 SL_ENTER(_("sh_suidchk_set_timer"));
1137
1138 val = strtol (c, (char **)NULL, 10);
1139 if (val <= 0)
1140 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1141 _("suidchk timer"), c);
1142
1143 val = (val <= 0 ? 7200 : val);
1144
1145 ShSuidchkInterval = (time_t) val;
1146 SL_RETURN( 0, _("sh_suidchk_set_timer"));
1147}
1148
1149
1150int sh_suidchk_free_schedule ()
1151{
1152 sh_schedule_t * current = ShSuidchkSched;
1153 sh_schedule_t * next = NULL;
1154
1155 while (current != NULL)
1156 {
1157 next = current->next;
1158 SH_FREE(current);
1159 current = next;
1160 }
1161 ShSuidchkSched = NULL;
1162 return 0;
1163}
1164
1165int sh_suidchk_set_schedule (char * str)
1166{
1167 int status;
1168 sh_schedule_t * newSched = NULL;
1169
1170 SL_ENTER(_("sh_suidchk_set_schedule"));
1171
1172 /*
1173 if (ShSuidchkSched != NULL)
1174 {
1175 SH_FREE(ShSuidchkSched);
1176 ShSuidchkSched = NULL;
1177 }
1178 */
1179
1180 if (0 == sl_strncmp(str, _("NULL"), 4))
1181 {
1182 (void) sh_suidchk_free_schedule ();
1183 return 0;
1184 }
1185
1186 newSched = SH_ALLOC(sizeof(sh_schedule_t));
1187 status = create_sched(str, newSched);
1188 if (status != 0)
1189 {
1190 SH_FREE(newSched);
1191 newSched = NULL;
1192 }
1193 else
1194 {
1195 newSched->next = ShSuidchkSched;
1196 ShSuidchkSched = newSched;
1197 }
1198 SL_RETURN( status, _("sh_suidchk_set_schedule"));
1199}
1200
1201
1202
1203int sh_suidchk_set_fps (char * c)
1204{
1205 long val;
1206
1207 SL_ENTER(_("sh_suidchk_set_fps"));
1208
1209 val = strtol (c, (char **)NULL, 10);
1210 if (val < 0)
1211 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1212 _("suidchk fps"), c);
1213
1214 val = (val < 0 ? 0 : val);
1215
1216 ShSuidchkFps = val;
1217 SL_RETURN( 0, _("sh_suidchk_set_fps"));
1218}
1219
1220int sh_suidchk_set_yield (char * c)
1221{
1222 int i;
1223 SL_ENTER(_("sh_suidchk_set_yield"));
1224#ifdef HAVE_SCHED_YIELD
1225 i = sh_util_flagval(c, &ShSuidchkYield);
1226#else
1227 (void) c; /* cast to void to avoid compiler warning */
1228 i = -1;
1229#endif
1230 SL_RETURN(i, _("sh_suidchk_set_yield"));
1231}
1232
1233int sh_suidchk_set_activate (char * c)
1234{
1235 int i;
1236 SL_ENTER(_("sh_suidchk_set_activate"));
1237 i = sh_util_flagval(c, &ShSuidchkActive);
1238 SL_RETURN(i, _("sh_suidchk_set_activate"));
1239}
1240
1241int sh_suidchk_set_quarantine (char * c)
1242{
1243 int i;
1244 SL_ENTER(_("sh_suidchk_set_quarantine"));
1245 i = sh_util_flagval(c, &ShSuidchkQEnable);
1246 SL_RETURN(i, _("sh_suidchk_set_quarantine"));
1247}
1248
1249int sh_suidchk_set_qdelete (char * c)
1250{
1251 int i;
1252 SL_ENTER(_("sh_suidchk_set_qdelete"));
1253 i = sh_util_flagval(c, &ShSuidchkQDelete);
1254 SL_RETURN(i, _("sh_suidchk_set_qdelete"));
1255}
1256
1257int sh_suidchk_set_qmethod (char * c)
1258{
1259 long val;
1260 int ret = 0;
1261 struct stat buf;
1262
1263 SL_ENTER(_("sh_suidchk_set_qmethod"));
1264
1265 val = strtol (c, (char **)NULL, 10);
1266 if (val < 0)
1267 {
1268 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1269 _("suidchk qmethod"), c);
1270 ret = -1;
1271 }
1272 else
1273 {
1274 switch (val)
1275 {
1276 case SH_Q_DELETE:
1277 ShSuidchkQMethod = SH_Q_DELETE;
1278 break;
1279 case SH_Q_CHANGEPERM:
1280 ShSuidchkQMethod = SH_Q_CHANGEPERM;
1281 break;
1282 case SH_Q_MOVE:
1283 if (retry_stat (FIL__, __LINE__, DEFAULT_QDIR, &buf) != 0)
1284 {
1285 if (mkdir (DEFAULT_QDIR, 0750) == -1)
1286 {
1287 sh_error_handle ((-1), FIL__, __LINE__, EINVAL,
1288 MSG_SUID_ERROR,
1289 _("Unable to create quarantine directory"));
1290 }
1291 }
1292 ShSuidchkQMethod = SH_Q_MOVE;
1293 break;
1294 default:
1295 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1296 _("suidchk qmethod"), c);
1297 ShSuidchkQMethod = -1;
1298 ret = -1;
1299 break;
1300 }
1301 }
1302
1303 SL_RETURN( ret, _("sh_suidchk_set_qmethod"));
1304}
1305
1306#if defined(FSTYPE_STATFS) || defined(FSTYPE_AIX_STATFS)
1307/* dirname.c -- return all but the last element in a path
1308 Copyright (C) 1990 Free Software Foundation, Inc.
1309
1310 This program is free software; you can redistribute it and/or modify
1311 it under the terms of the GNU General Public License as published by
1312 the Free Software Foundation; either version 2, or (at your option)
1313 any later version.
1314
1315 This program is distributed in the hope that it will be useful,
1316 but WITHOUT ANY WARRANTY; without even the implied warranty of
1317 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1318 GNU General Public License for more details.
1319
1320 You should have received a copy of the GNU General Public License
1321 along with this program; if not, write to the Free Software Foundation,
1322 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
1323
1324/* Return the leading directories part of PATH,
1325 allocated with malloc. If out of memory, return 0.
1326 Assumes that trailing slashes have already been
1327 removed. */
1328
1329char * sh_dirname (const char * path)
1330{
1331 char *newpath;
1332 char *slash;
1333 int length; /* Length of result, not including NUL. */
1334
1335 slash = strrchr (path, '/');
1336 if (slash == NULL)
1337 {
1338 /* File is in the current directory. */
1339 path = ".";
1340 length = 1;
1341 }
1342 else
1343 {
1344 /* Remove any trailing slashes from the result. */
1345 while (slash > path && *slash == '/')
1346 --slash;
1347
1348 length = slash - path + 1;
1349 }
1350 newpath = (char *) SH_ALLOC (length + 1);
1351 if (newpath == NULL)
1352 return NULL;
1353 strncpy (newpath, path, length);
1354 newpath[length] = '\0';
1355 return newpath;
1356}
1357/* #ifdef FSTYPE_STATFS */
1358#endif
1359
1360/* fstype.c -- determine type of filesystems that files are on
1361 Copyright (C) 1990, 91, 92, 93, 94 Free Software Foundation, Inc.
1362
1363 This program is free software; you can redistribute it and/or modify
1364 it under the terms of the GNU General Public License as published by
1365 the Free Software Foundation; either version 2, or (at your option)
1366 any later version.
1367
1368 This program is distributed in the hope that it will be useful,
1369 but WITHOUT ANY WARRANTY; without even the implied warranty of
1370 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1371 GNU General Public License for more details.
1372
1373 You should have received a copy of the GNU General Public License
1374 along with this program; if not, write to the Free Software
1375 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
1376
1377/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
1378
1379/* Modified by R. Wichmann:
1380 - replaced error() by sh_error_handle()
1381 - replaced xstrdup() by sl_strdup()
1382 - replaced strstr() by sl_strstr()
1383 - some additions to recognize nosuid fs
1384*/
1385
1386/* modetype.h -- file type bits definitions for POSIX systems
1387 Requires sys/types.h sys/stat.h.
1388 Copyright (C) 1990 Free Software Foundation, Inc.
1389
1390 This program is free software; you can redistribute it and/or modify
1391 it under the terms of the GNU General Public License as published by
1392 the Free Software Foundation; either version 2, or (at your option)
1393 any later version.
1394
1395 This program is distributed in the hope that it will be useful,
1396 but WITHOUT ANY WARRANTY; without even the implied warranty of
1397 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1398 GNU General Public License for more details.
1399
1400 You should have received a copy of the GNU General Public License
1401 along with this program; if not, write to the Free Software
1402 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
1403
1404/* POSIX.1 doesn't mention the S_IFMT bits; instead, it uses S_IStype
1405 test macros. To make storing file types more convenient, define
1406 them; the values don't need to correspond to what the kernel uses,
1407 because of the way we use them. */
1408#ifndef S_IFMT /* Doesn't have traditional Unix macros. */
1409#define S_IFBLK 1
1410#define S_IFCHR 2
1411#define S_IFDIR 4
1412#define S_IFREG 8
1413#ifdef S_ISLNK
1414#define S_IFLNK 16
1415#endif
1416#ifdef S_ISFIFO
1417#define S_IFIFO 32
1418#endif
1419#ifdef S_ISSOCK
1420#define S_IFSOCK 64
1421#endif
1422#endif /* !S_IFMT */
1423
1424#ifdef STAT_MACROS_BROKEN
1425#undef S_ISBLK
1426#undef S_ISCHR
1427#undef S_ISDIR
1428#undef S_ISREG
1429#undef S_ISFIFO
1430#undef S_ISLNK
1431#undef S_ISSOCK
1432#undef S_ISMPB
1433#undef S_ISMPC
1434#undef S_ISNWK
1435#endif
1436
1437/* Do the reverse: define the POSIX.1 macros for traditional Unix systems
1438 that don't have them. */
1439#if !defined(S_ISBLK) && defined(S_IFBLK)
1440#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
1441#endif
1442#if !defined(S_ISCHR) && defined(S_IFCHR)
1443#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
1444#endif
1445#if !defined(S_ISDIR) && defined(S_IFDIR)
1446#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
1447#endif
1448#if !defined(S_ISREG) && defined(S_IFREG)
1449#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
1450#endif
1451#if !defined(S_ISFIFO) && defined(S_IFIFO)
1452#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
1453#endif
1454#if !defined(S_ISLNK) && defined(S_IFLNK)
1455#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
1456#endif
1457#if !defined(S_ISSOCK) && defined(S_IFSOCK)
1458#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
1459#endif
1460#if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
1461#define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
1462#define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
1463#endif
1464#if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
1465#define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
1466#endif
1467
1468
1469static char *filesystem_type_uncached (char *path, char *relpath,
1470 struct stat *statp);
1471
1472#ifdef FSTYPE_MNTENT /* 4.3BSD etc. */
1473static int xatoi (char *cp);
1474#endif
1475
1476#ifdef FSTYPE_MNTENT /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */
1477#include <mntent.h>
1478#if !defined(MOUNTED)
1479# if defined(MNT_MNTTAB) /* HP-UX. */
1480# define MOUNTED MNT_MNTTAB
1481# endif
1482# if defined(MNTTABNAME) /* Dynix. */
1483# define MOUNTED MNTTABNAME
1484# endif
1485#endif
1486#endif
1487
1488#ifdef FSTYPE_GETMNT /* Ultrix. */
1489#include <sys/param.h>
1490#include <sys/mount.h>
1491#include <sys/fs_types.h>
1492#endif
1493
1494#ifdef FSTYPE_USG_STATFS /* SVR3. */
1495#include <sys/statfs.h>
1496#include <sys/fstyp.h>
1497#endif
1498
1499#ifdef FSTYPE_STATVFS /* SVR4. */
1500#include <sys/statvfs.h>
1501#include <sys/fstyp.h>
1502#endif
1503
1504#ifdef FSTYPE_STATFS /* 4.4BSD. */
1505#include <sys/param.h> /* NetBSD needs this. */
1506#include <sys/mount.h>
1507
1508#ifndef MFSNAMELEN /* NetBSD defines this. */
1509static char *
1510fstype_to_string (t)
1511 short t;
1512{
1513#ifdef INITMOUNTNAMES /* Defined in 4.4BSD, not in NET/2. */
1514 static char *mn[] = INITMOUNTNAMES;
1515 if (t >= 0 && t <= MOUNT_MAXTYPE)
1516 return mn[t];
1517 else
1518 return "?";
1519#else /* !INITMOUNTNAMES */
1520 switch (t)
1521 {
1522 case MOUNT_UFS:
1523 return _("ufs");
1524 case MOUNT_NFS:
1525 return _("nfs");
1526#ifdef MOUNT_PC
1527 case MOUNT_PC:
1528 return _("pc");
1529#endif
1530#ifdef MOUNT_MFS
1531 case MOUNT_MFS:
1532 return _("mfs");
1533#endif
1534#ifdef MOUNT_LO
1535 case MOUNT_LO:
1536 return _("lofs");
1537#endif
1538#ifdef MOUNT_TFS
1539 case MOUNT_TFS:
1540 return _("tfs");
1541#endif
1542#ifdef MOUNT_TMP
1543 case MOUNT_TMP:
1544 return _("tmp");
1545#endif
1546#ifdef MOUNT_MSDOS
1547 case MOUNT_MSDOS:
1548 return _("msdos");
1549#endif
1550#ifdef MOUNT_ISO9660
1551 case MOUNT_ISO9660:
1552 return _("iso9660fs");
1553#endif
1554 default:
1555 return "?";
1556 }
1557#endif /* !INITMOUNTNAMES */
1558}
1559#endif /* !MFSNAMELEN */
1560#endif /* FSTYPE_STATFS */
1561
1562#ifdef FSTYPE_AIX_STATFS /* AIX. */
1563#include <sys/vmount.h>
1564#include <sys/statfs.h>
1565
1566#define FSTYPE_STATFS /* Otherwise like 4.4BSD. */
1567#define f_type f_vfstype
1568
1569static char *
1570fstype_to_string (t)
1571 short t;
1572{
1573 switch (t)
1574 {
1575 case MNT_AIX:
1576 return _("aix"); /* AIX 4.3: NFS filesystems are actually MNT_AIX. */
1577#ifdef MNT_NAMEFS
1578 case MNT_NAMEFS:
1579 return _("namefs");
1580#endif
1581 case MNT_NFS:
1582 return _("nfs");
1583 case MNT_JFS:
1584 return _("jfs");
1585 case MNT_CDROM:
1586 return _("cdrom");
1587#ifdef MNT_PROCFS
1588 case MNT_PROCFS:
1589 return _("procfs");
1590#endif
1591#ifdef MNT_SFS
1592 case MNT_SFS:
1593 return _("sfs");
1594#endif
1595#ifdef MNT_CACHEFS
1596 case MNT_CACHEFS:
1597 return _("cachefs");
1598#endif
1599#ifdef MNT_NFS3
1600 case MNT_NFS3:
1601 return _("nfs3");
1602#endif
1603#ifdef MNT_AUTOFS
1604 case MNT_AUTOFS:
1605 return _("autofs");
1606#endif
1607#ifdef MNT_VXFS
1608 case MNT_VXFS:
1609 return _("vxfs");
1610#endif
1611#ifdef MNT_VXODM
1612 case MNT_VXODM:
1613 return _("veritasfs");
1614#endif
1615#ifdef MNT_UDF
1616 case MNT_UDF:
1617 return _("udfs");
1618#endif
1619#ifdef MNT_NFS4
1620 case MNT_NFS4:
1621 return _("nfs4");
1622#endif
1623#ifdef MNT_RFS4
1624 case MNT_RFS4:
1625 return _("nfs4");
1626#endif
1627#ifdef MNT_CIFS
1628 case MNT_CIFS:
1629 return _("cifs");
1630#endif
1631 default:
1632 return "?";
1633 }
1634}
1635#endif /* FSTYPE_AIX_STATFS */
1636
1637#ifdef AFS
1638#include <netinet/in.h>
1639#include <afs/venus.h>
1640#if __STDC__
1641/* On SunOS 4, afs/vice.h defines this to rely on a pre-ANSI cpp. */
1642#undef _VICEIOCTL
1643#define _VICEIOCTL(id) ((unsigned int ) _IOW('V', id, struct ViceIoctl))
1644#endif
1645#ifndef _IOW
1646/* AFS on Solaris 2.3 doesn't get this definition. */
1647#include <sys/ioccom.h>
1648#endif
1649
1650static int
1651in_afs (path)
1652 char *path;
1653{
1654 static char space[2048];
1655 struct ViceIoctl vi;
1656
1657 vi.in_size = 0;
1658 vi.out_size = sizeof (space);
1659 vi.out = space;
1660
1661 if (pioctl (path, VIOC_FILE_CELL_NAME, &vi, 1)
1662 && (errno == EINVAL || errno == ENOENT))
1663 return 0;
1664 return 1;
1665}
1666#endif /* AFS */
1667
1668/* Nonzero if the current filesystem's type is known. */
1669static int fstype_known = 0;
1670
1671/* Return a static string naming the type of filesystem that the file PATH,
1672 described by STATP, is on.
1673 RELPATH is the file name relative to the current directory.
1674 Return "unknown" if its filesystem type is unknown. */
1675
1676static char *
1677filesystem_type (char * path, char * relpath, struct stat * statp)
1678{
1679 static char *current_fstype = NULL;
1680 static dev_t current_dev;
1681
1682 if (current_fstype != NULL)
1683 {
1684 if ((0 != fstype_known) && statp->st_dev == current_dev)
1685 return current_fstype; /* Cached value. */
1686 SH_FREE (current_fstype);
1687 }
1688 current_dev = statp->st_dev;
1689 current_fstype = filesystem_type_uncached (path, relpath, statp);
1690 return current_fstype;
1691}
1692
1693/* Return a newly allocated string naming the type of filesystem that the
1694 file PATH, described by STATP, is on.
1695 RELPATH is the file name relative to the current directory.
1696 Return "unknown" if its filesystem type is unknown. */
1697
1698static char *
1699filesystem_type_uncached (path, relpath, statp)
1700 char *path;
1701 char *relpath;
1702 struct stat *statp;
1703{
1704 char * type = NULL;
1705#ifdef MFSNAMELEN /* NetBSD. */
1706 static char my_tmp_type[64];
1707#endif
1708
1709#ifdef FSTYPE_MNTENT /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */
1710 char *table = MOUNTED;
1711 FILE *mfp;
1712 struct mntent *mnt;
1713
1714 if (path == NULL || relpath == NULL)
1715 return NULL;
1716
1717 mfp = setmntent (table, "r");
1718 if (mfp == NULL)
1719 {
1720 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_E_SUBGEN,
1721 _("setmntent() failed"),
1722 _("filesystem_type_uncached") );
1723 return NULL;
1724 }
1725
1726 /* Find the entry with the same device number as STATP, and return
1727 that entry's fstype. */
1728 while (type == NULL && (mnt = getmntent (mfp)) != NULL)
1729 {
1730 char *devopt;
1731 dev_t dev;
1732 struct stat disk_stats;
1733
1734#ifdef MNTTYPE_IGNORE
1735 if (0 == strcmp (mnt->mnt_type, MNTTYPE_IGNORE))
1736 continue;
1737#endif
1738
1739 /* Newer systems like SunOS 4.1 keep the dev number in the mtab,
1740 in the options string. For older systems, we need to stat the
1741 directory that the filesystem is mounted on to get it.
1742
1743 Unfortunately, the HPUX 9.x mnttab entries created by automountq
1744 contain a dev= option but the option value does not match the
1745 st_dev value of the file (maybe the lower 16 bits match?). */
1746
1747#if !defined(hpux) && !defined(__hpux__)
1748 devopt = sl_strstr (mnt->mnt_opts, "dev=");
1749 if (devopt)
1750 {
1751 if (devopt[4] == '0' && (devopt[5] == 'x' || devopt[5] == 'X'))
1752 dev = (dev_t) xatoi (devopt + 6);
1753 else
1754 dev = (dev_t) xatoi (devopt + 4);
1755 }
1756 else
1757#endif /* not hpux */
1758 {
1759 if (stat (mnt->mnt_dir, &disk_stats) == -1)
1760 {
1761 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_E_SUBGEN,
1762 _("stat() failed"),
1763 _("filesystem_type_uncached") );
1764 return NULL;
1765 }
1766 dev = disk_stats.st_dev;
1767 }
1768
1769 if (dev == statp->st_dev)
1770 {
1771 /* check for the "nosuid" option
1772 */
1773#ifdef HAVE_HASMNTOPT
1774 if (NULL == hasmntopt(mnt, "nosuid"))
1775 type = mnt->mnt_type;
1776 else
1777 type = _("nosuid"); /* hasmntopt (nosuid) */
1778#else
1779 type = mnt->mnt_type;
1780#endif
1781 }
1782 }
1783
1784 if (endmntent (mfp) == 0)
1785 {
1786 sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_E_SUBGEN,
1787 _("endmntent() failed"),
1788 _("filesystem_type_uncached") );
1789 }
1790#endif
1791
1792#ifdef FSTYPE_GETMNT /* Ultrix. */
1793 int offset = 0;
1794 struct fs_data fsd;
1795
1796 if (path == NULL || relpath == NULL)
1797 return NULL;
1798
1799 while (type == NULL
1800 && getmnt (&offset, &fsd, sizeof (fsd), NOSTAT_MANY, 0) > 0)
1801 {
1802 if (fsd.fd_req.dev == statp->st_dev)
1803 type = gt_names[fsd.fd_req.fstype];
1804 }
1805#endif
1806
1807#ifdef FSTYPE_USG_STATFS /* SVR3. */
1808 struct statfs fss;
1809 char typebuf[FSTYPSZ];
1810
1811 if (path == NULL || relpath == NULL)
1812 return NULL;
1813
1814 if (statfs (relpath, &fss, sizeof (struct statfs), 0) == -1)
1815 {
1816 /* Don't die if a file was just removed. */
1817 if (errno != ENOENT)
1818 {
1819 sh_error_handle ((-1), FIL__, __LINE__, errno, MSG_E_SUBGEN,
1820 _("statfs() failed"),
1821 _("filesystem_type_uncached") );
1822 return NULL;
1823 }
1824 }
1825 else if (!sysfs (GETFSTYP, fss.f_fstyp, typebuf))
1826 type = typebuf;
1827#endif
1828
1829#ifdef FSTYPE_STATVFS /* SVR4. */
1830 struct statvfs fss;
1831
1832 if (path == NULL || relpath == NULL)
1833 return NULL;
1834
1835 if (statvfs (relpath, &fss) == -1)
1836 {
1837 /* Don't die if a file was just removed. */
1838 if (errno != ENOENT)
1839 {
1840 sh_error_handle ((-1), FIL__, __LINE__, errno, MSG_E_SUBGEN,
1841 _("statvfs() failed"),
1842 _("filesystem_type_uncached") );
1843 return NULL;
1844 }
1845 }
1846 else
1847 {
1848 type = fss.f_basetype;
1849
1850 /* patch by Konstantin Khrooschev <nathoo@co.ru>
1851 */
1852 if( fss.f_flag & ST_NOSUID )
1853 type = _("nosuid");
1854 }
1855 (void) statp; /* fix compiler warning */
1856#endif
1857
1858#ifdef FSTYPE_STATFS /* 4.4BSD. */
1859 struct statfs fss;
1860 char *p;
1861#if defined(MNT_VISFLAGMASK) && defined(HAVE_STRUCT_STATFS_F_FLAGS)
1862 int flags;
1863#endif
1864 /* char * sh_dirname(const char *path); */
1865
1866 if (path == NULL || relpath == NULL)
1867 return NULL;
1868
1869 if (S_ISLNK (statp->st_mode))
1870 p = sh_dirname (relpath);
1871 else
1872 p = relpath;
1873
1874 if (statfs (p, &fss) == -1)
1875 {
1876 /* Don't die if symlink to nonexisting file, or a file that was
1877 just removed. */
1878 if (errno != ENOENT)
1879 {
1880 sh_error_handle ((-1), FIL__, __LINE__, errno, MSG_E_SUBGEN,
1881 _("statfs() failed"),
1882 _("filesystem_type_uncached") );
1883 return NULL;
1884 }
1885 }
1886 else
1887 {
1888
1889#ifdef MFSNAMELEN /* NetBSD. */
1890 /* MEMORY LEAK !!!
1891 * type = sh_util_strdup (fss.f_fstypename);
1892 */
1893 sl_strlcpy (my_tmp_type, fss.f_fstypename, 64);
1894 type = my_tmp_type;
1895#else
1896 type = fstype_to_string (fss.f_type);
1897#endif
1898
1899#ifdef HAVE_STRUCT_STATFS_F_FLAGS
1900#ifdef MNT_VISFLAGMASK
1901 flags = fss.f_flags & MNT_VISFLAGMASK;
1902 if (flags & MNT_NOSUID)
1903#else
1904 if (fss.f_flags & MNT_NOSUID)
1905#endif
1906 type = _("nosuid");
1907#endif
1908 }
1909 if (p != relpath)
1910 SH_FREE (p);
1911#endif
1912
1913#ifdef AFS
1914 if ((!type || !strcmp (type, "xx")) && in_afs (relpath))
1915 type = "afs";
1916#endif
1917
1918 /* An unknown value can be caused by an ENOENT error condition.
1919 Don't cache those values. */
1920 fstype_known = (int)(type != NULL);
1921
1922 return sh_util_strdup (type ? type : "unknown");
1923}
1924
1925#ifdef FSTYPE_MNTENT /* 4.3BSD etc. */
1926/* Return the value of the hexadecimal number represented by CP.
1927 No prefix (like '0x') or suffix (like 'h') is expected to be
1928 part of CP. */
1929
1930static int
1931xatoi (cp)
1932 char *cp;
1933{
1934 int val;
1935
1936 val = 0;
1937 while (*cp != '\0')
1938 {
1939 /*@+charint@*/
1940 if (*cp >= 'a' && *cp <= 'f')
1941 val = val * 16 + *cp - 'a' + 10;
1942 else if (*cp >= 'A' && *cp <= 'F')
1943 val = val * 16 + *cp - 'A' + 10;
1944 else if (*cp >= '0' && *cp <= '9')
1945 val = val * 16 + *cp - '0';
1946 else
1947 break;
1948 /*@-charint@*/
1949 cp++;
1950 }
1951 return val;
1952}
1953#endif
1954
1955
1956
1957#endif
1958
1959
1960/* #ifdef SH_USE_UTMP */
1961#endif
1962
1963
1964
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