minix/usr.sbin/mtree/compare.c

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/* $NetBSD: compare.c,v 1.55 2012/10/05 00:59:35 christos Exp $ */
/*-
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
#if 0
static char sccsid[] = "@(#)compare.c 8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: compare.c,v 1.55 2012/10/05 00:59:35 christos Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#ifndef NO_MD5
#include <md5.h>
#endif
#ifndef NO_RMD160
#include <rmd160.h>
#endif
#ifndef NO_SHA1
#include <sha1.h>
#endif
#ifndef NO_SHA2
#include <sha2.h>
#endif
#include "extern.h"
#define INDENTNAMELEN 8
#define MARK \
do { \
len = printf("%s: ", RP(p)); \
if (len > INDENTNAMELEN) { \
tab = "\t"; \
printf("\n"); \
} else { \
tab = ""; \
printf("%*s", INDENTNAMELEN - (int)len, ""); \
} \
} while (0)
#define LABEL if (!label++) MARK
#if HAVE_STRUCT_STAT_ST_FLAGS
#define CHANGEFLAGS \
if (flags != p->fts_statp->st_flags) { \
char *sf; \
if (!label) { \
MARK; \
sf = flags_to_string(p->fts_statp->st_flags, "none"); \
printf("%sflags (\"%s\"", tab, sf); \
free(sf); \
} \
if (lchflags(p->fts_accpath, flags)) { \
label++; \
printf(", not modified: %s)\n", \
strerror(errno)); \
} else { \
sf = flags_to_string(flags, "none"); \
printf(", modified to \"%s\")\n", sf); \
free(sf); \
} \
}
/* SETFLAGS:
* given pflags, additionally set those flags specified in s->st_flags and
* selected by mask (the other flags are left unchanged).
*/
#define SETFLAGS(pflags, mask) \
do { \
flags = (s->st_flags & (mask)) | (pflags); \
CHANGEFLAGS; \
} while (0)
/* CLEARFLAGS:
* given pflags, reset the flags specified in s->st_flags and selected by mask
* (the other flags are left unchanged).
*/
#define CLEARFLAGS(pflags, mask) \
do { \
flags = (~(s->st_flags & (mask)) & CH_MASK) & (pflags); \
CHANGEFLAGS; \
} while (0)
#endif /* HAVE_STRUCT_STAT_ST_FLAGS */
#ifdef __minix
#if 0
int
lchmod(const char *path, mode_t flags)
{
return -1;
}
int
lchown(const char *path, uid_t owner, gid_t group)
{
return -1;
}
#endif
int
utimes(const char *path, const struct timeval times[2])
{
return -1;
}
#endif
int
compare(NODE *s, FTSENT *p)
{
u_int32_t len, val, flags;
int fd, label;
const char *cp, *tab;
#if !defined(NO_MD5) || !defined(NO_RMD160) || !defined(NO_SHA1) || !defined(NO_SHA2)
char *digestbuf;
#endif
tab = NULL;
label = 0;
switch(s->type) {
case F_BLOCK:
if (!S_ISBLK(p->fts_statp->st_mode))
goto typeerr;
break;
case F_CHAR:
if (!S_ISCHR(p->fts_statp->st_mode))
goto typeerr;
break;
case F_DIR:
if (!S_ISDIR(p->fts_statp->st_mode))
goto typeerr;
break;
case F_FIFO:
if (!S_ISFIFO(p->fts_statp->st_mode))
goto typeerr;
break;
case F_FILE:
if (!S_ISREG(p->fts_statp->st_mode))
goto typeerr;
break;
case F_LINK:
if (!S_ISLNK(p->fts_statp->st_mode))
goto typeerr;
break;
#ifdef S_ISSOCK
case F_SOCK:
if (!S_ISSOCK(p->fts_statp->st_mode))
goto typeerr;
break;
#endif
typeerr: LABEL;
printf("\ttype (%s, %s)\n",
nodetype(s->type), inotype(p->fts_statp->st_mode));
return (label);
}
if (mtree_Wflag)
goto afterpermwhack;
#if HAVE_STRUCT_STAT_ST_FLAGS
if (iflag && !uflag) {
if (s->flags & F_FLAGS)
SETFLAGS(p->fts_statp->st_flags, SP_FLGS);
return (label);
}
if (mflag && !uflag) {
if (s->flags & F_FLAGS)
CLEARFLAGS(p->fts_statp->st_flags, SP_FLGS);
return (label);
}
#endif
if (s->flags & F_DEV &&
(s->type == F_BLOCK || s->type == F_CHAR) &&
s->st_rdev != p->fts_statp->st_rdev) {
LABEL;
printf("%sdevice (%#llx, %#llx",
tab, (long long)s->st_rdev,
(long long)p->fts_statp->st_rdev);
if (uflag) {
if ((unlink(p->fts_accpath) == -1) ||
(mknod(p->fts_accpath,
s->st_mode | nodetoino(s->type),
s->st_rdev) == -1) ||
(lchown(p->fts_accpath, p->fts_statp->st_uid,
p->fts_statp->st_gid) == -1) )
printf(", not modified: %s)\n",
strerror(errno));
else
printf(", modified)\n");
} else
printf(")\n");
tab = "\t";
}
/* Set the uid/gid first, then set the mode. */
if (s->flags & (F_UID | F_UNAME) && s->st_uid != p->fts_statp->st_uid) {
LABEL;
printf("%suser (%lu, %lu",
tab, (u_long)s->st_uid, (u_long)p->fts_statp->st_uid);
if (uflag) {
if (lchown(p->fts_accpath, s->st_uid, -1))
printf(", not modified: %s)\n",
strerror(errno));
else
printf(", modified)\n");
} else
printf(")\n");
tab = "\t";
}
if (s->flags & (F_GID | F_GNAME) && s->st_gid != p->fts_statp->st_gid) {
LABEL;
printf("%sgid (%lu, %lu",
tab, (u_long)s->st_gid, (u_long)p->fts_statp->st_gid);
if (uflag) {
if (lchown(p->fts_accpath, -1, s->st_gid))
printf(", not modified: %s)\n",
strerror(errno));
else
printf(", modified)\n");
}
else
printf(")\n");
tab = "\t";
}
if (s->flags & F_MODE &&
s->st_mode != (p->fts_statp->st_mode & MBITS)) {
if (lflag) {
mode_t tmode, mode;
tmode = s->st_mode;
mode = p->fts_statp->st_mode & MBITS;
/*
* if none of the suid/sgid/etc bits are set,
* then if the mode is a subset of the target,
* skip.
*/
if (!((tmode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) ||
(mode & ~(S_IRWXU|S_IRWXG|S_IRWXO))))
if ((mode | tmode) == tmode)
goto skip;
}
LABEL;
printf("%spermissions (%#lo, %#lo",
tab, (u_long)s->st_mode,
(u_long)p->fts_statp->st_mode & MBITS);
if (uflag) {
if (lchmod(p->fts_accpath, s->st_mode))
printf(", not modified: %s)\n",
strerror(errno));
else
printf(", modified)\n");
}
else
printf(")\n");
tab = "\t";
skip: ;
}
if (s->flags & F_NLINK && s->type != F_DIR &&
s->st_nlink != p->fts_statp->st_nlink) {
LABEL;
printf("%slink count (%lu, %lu)\n",
tab, (u_long)s->st_nlink, (u_long)p->fts_statp->st_nlink);
tab = "\t";
}
if (s->flags & F_SIZE && s->st_size != p->fts_statp->st_size) {
LABEL;
printf("%ssize (%lld, %lld)\n",
tab, (long long)s->st_size,
(long long)p->fts_statp->st_size);
tab = "\t";
}
/*
* XXX
* Since utimes(2) only takes a timeval, there's no point in
* comparing the low bits of the timespec nanosecond field. This
* will only result in mismatches that we can never fix.
*
* Doesn't display microsecond differences.
*/
if (s->flags & F_TIME) {
struct timeval tv[2];
struct stat *ps = p->fts_statp;
time_t smtime = s->st_mtimespec.tv_sec;
#if defined(BSD4_4) && !defined(HAVE_NBTOOL_CONFIG_H)
time_t pmtime = ps->st_mtimespec.tv_sec;
TIMESPEC_TO_TIMEVAL(&tv[0], &s->st_mtimespec);
TIMESPEC_TO_TIMEVAL(&tv[1], &ps->st_mtimespec);
#else
time_t pmtime = (time_t)ps->st_mtime;
tv[0].tv_sec = smtime;
tv[0].tv_usec = 0;
tv[1].tv_sec = pmtime;
tv[1].tv_usec = 0;
#endif
if (tv[0].tv_sec != tv[1].tv_sec ||
tv[0].tv_usec != tv[1].tv_usec) {
LABEL;
printf("%smodification time (%.24s, ",
tab, ctime(&smtime));
printf("%.24s", ctime(&pmtime));
if (tflag) {
tv[1] = tv[0];
if (utimes(p->fts_accpath, tv))
printf(", not modified: %s)\n",
strerror(errno));
else
printf(", modified)\n");
} else
printf(")\n");
tab = "\t";
}
}
#if HAVE_STRUCT_STAT_ST_FLAGS
/*
* XXX
* since lchflags(2) will reset file times, the utimes() above
* may have been useless! oh well, we'd rather have correct
* flags, rather than times?
*/
if ((s->flags & F_FLAGS) && ((s->st_flags != p->fts_statp->st_flags)
|| mflag || iflag)) {
if (s->st_flags != p->fts_statp->st_flags) {
char *f_s;
LABEL;
f_s = flags_to_string(s->st_flags, "none");
printf("%sflags (\"%s\" is not ", tab, f_s);
free(f_s);
f_s = flags_to_string(p->fts_statp->st_flags, "none");
printf("\"%s\"", f_s);
free(f_s);
}
if (uflag) {
if (iflag)
SETFLAGS(0, CH_MASK);
else if (mflag)
CLEARFLAGS(0, SP_FLGS);
else
SETFLAGS(0, (~SP_FLGS & CH_MASK));
} else
printf(")\n");
tab = "\t";
}
#endif /* HAVE_STRUCT_STAT_ST_FLAGS */
/*
* from this point, no more permission checking or whacking
* occurs, only checking of stuff like checksums and symlinks.
*/
afterpermwhack:
if (s->flags & F_CKSUM) {
if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0) {
LABEL;
printf("%scksum: %s: %s\n",
tab, p->fts_accpath, strerror(errno));
tab = "\t";
} else if (crc(fd, &val, &len)) {
close(fd);
LABEL;
printf("%scksum: %s: %s\n",
tab, p->fts_accpath, strerror(errno));
tab = "\t";
} else {
close(fd);
if (s->cksum != val) {
LABEL;
printf("%scksum (%lu, %lu)\n",
tab, s->cksum, (unsigned long)val);
}
tab = "\t";
}
}
#ifndef NO_MD5
if (s->flags & F_MD5) {
if ((digestbuf = MD5File(p->fts_accpath, NULL)) == NULL) {
LABEL;
printf("%s%s: %s: %s\n",
tab, MD5KEY, p->fts_accpath, strerror(errno));
tab = "\t";
} else {
if (strcmp(s->md5digest, digestbuf)) {
LABEL;
printf("%s%s (0x%s, 0x%s)\n",
tab, MD5KEY, s->md5digest, digestbuf);
}
tab = "\t";
free(digestbuf);
}
}
#endif /* ! NO_MD5 */
#ifndef NO_RMD160
if (s->flags & F_RMD160) {
if ((digestbuf = RMD160File(p->fts_accpath, NULL)) == NULL) {
LABEL;
printf("%s%s: %s: %s\n",
tab, RMD160KEY, p->fts_accpath, strerror(errno));
tab = "\t";
} else {
if (strcmp(s->rmd160digest, digestbuf)) {
LABEL;
printf("%s%s (0x%s, 0x%s)\n",
tab, RMD160KEY, s->rmd160digest, digestbuf);
}
tab = "\t";
free(digestbuf);
}
}
#endif /* ! NO_RMD160 */
#ifndef NO_SHA1
if (s->flags & F_SHA1) {
if ((digestbuf = SHA1File(p->fts_accpath, NULL)) == NULL) {
LABEL;
printf("%s%s: %s: %s\n",
tab, SHA1KEY, p->fts_accpath, strerror(errno));
tab = "\t";
} else {
if (strcmp(s->sha1digest, digestbuf)) {
LABEL;
printf("%s%s (0x%s, 0x%s)\n",
tab, SHA1KEY, s->sha1digest, digestbuf);
}
tab = "\t";
free(digestbuf);
}
}
#endif /* ! NO_SHA1 */
#ifndef NO_SHA2
if (s->flags & F_SHA256) {
if ((digestbuf = SHA256_File(p->fts_accpath, NULL)) == NULL) {
LABEL;
printf("%s%s: %s: %s\n",
tab, SHA256KEY, p->fts_accpath, strerror(errno));
tab = "\t";
} else {
if (strcmp(s->sha256digest, digestbuf)) {
LABEL;
printf("%s%s (0x%s, 0x%s)\n",
tab, SHA256KEY, s->sha256digest, digestbuf);
}
tab = "\t";
free(digestbuf);
}
}
#ifdef SHA384_BLOCK_LENGTH
if (s->flags & F_SHA384) {
if ((digestbuf = SHA384_File(p->fts_accpath, NULL)) == NULL) {
LABEL;
printf("%s%s: %s: %s\n",
tab, SHA384KEY, p->fts_accpath, strerror(errno));
tab = "\t";
} else {
if (strcmp(s->sha384digest, digestbuf)) {
LABEL;
printf("%s%s (0x%s, 0x%s)\n",
tab, SHA384KEY, s->sha384digest, digestbuf);
}
tab = "\t";
free(digestbuf);
}
}
#endif
if (s->flags & F_SHA512) {
if ((digestbuf = SHA512_File(p->fts_accpath, NULL)) == NULL) {
LABEL;
printf("%s%s: %s: %s\n",
tab, SHA512KEY, p->fts_accpath, strerror(errno));
tab = "\t";
} else {
if (strcmp(s->sha512digest, digestbuf)) {
LABEL;
printf("%s%s (0x%s, 0x%s)\n",
tab, SHA512KEY, s->sha512digest, digestbuf);
}
tab = "\t";
free(digestbuf);
}
}
#endif /* ! NO_SHA2 */
if (s->flags & F_SLINK &&
strcmp(cp = rlink(p->fts_accpath), s->slink)) {
LABEL;
printf("%slink ref (%s, %s", tab, cp, s->slink);
if (uflag) {
if ((unlink(p->fts_accpath) == -1) ||
(symlink(s->slink, p->fts_accpath) == -1) )
printf(", not modified: %s)\n",
strerror(errno));
else
printf(", modified)\n");
} else
printf(")\n");
}
return (label);
}
const char *
rlink(const char *name)
{
static char lbuf[MAXPATHLEN];
int len;
if ((len = readlink(name, lbuf, sizeof(lbuf) - 1)) == -1)
mtree_err("%s: %s", name, strerror(errno));
lbuf[len] = '\0';
return (lbuf);
}