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compare.c revision 1.26 
      1 /*	$NetBSD: compare.c,v 1.26 2001/09/22 03:56:29 perry Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1989, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)compare.c	8.1 (Berkeley) 6/6/93";
     40 #else
     41 __RCSID("$NetBSD: compare.c,v 1.26 2001/09/22 03:56:29 perry Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include <sys/param.h>
     46 #include <sys/stat.h>
     47 #include <sys/types.h>
     48 
     49 #include <errno.h>
     50 #include <fcntl.h>
     51 #include <fts.h>
     52 #include <md5.h>
     53 #include <stdio.h>
     54 #include <time.h>
     55 #include <unistd.h>
     56 
     57 #include "mtree.h"
     58 #include "extern.h"
     59 
     60 extern int iflag, lflag, mflag, tflag, uflag;
     61 
     62 static const char *ftype(u_int);
     63 
     64 #define	INDENTNAMELEN	8
     65 #define MARK                                                                  \
     66 do {                                                                          \
     67 	len = printf("%s: ", RP(p));                                          \
     68 	if (len > INDENTNAMELEN) {                                            \
     69 		tab = "\t";                                                   \
     70 		(void)printf("\n");                                           \
     71 	} else {                                                              \
     72 		tab = "";                                                     \
     73 		(void)printf("%*s", INDENTNAMELEN - (int)len, "");            \
     74 	}                                                                     \
     75 } while (0)
     76 #define	LABEL if (!label++) MARK
     77 
     78 #define CHANGEFLAGS(path, oflags) \
     79 	if (flags != (oflags)) {                                              \
     80 		if (!label) {                                                 \
     81 			MARK;                                                 \
     82 			(void)printf("%sflags (\"%s\"", tab,                  \
     83 			    flags_to_string(p->fts_statp->st_flags, "none")); \
     84 		}                                                             \
     85 		if (chflags(path, flags)) {                                   \
     86 			label++;                                              \
     87 			(void)printf(", not modified: %s)\n",                 \
     88 			    strerror(errno));                                 \
     89 		} else                                                        \
     90 			(void)printf(", modified to \"%s\")\n",               \
     91 			     flags_to_string(flags, "none"));                 \
     92 	}
     93 
     94 /* SETFLAGS:
     95  * given pflags, additionally set those flags specified in sflags and
     96  * selected by mask (the other flags are left unchanged). oflags is
     97  * passed as reference to check if chflags is necessary.
     98  */
     99 #define SETFLAGS(path, sflags, pflags, oflags, mask)                          \
    100 do {                                                                          \
    101 	flags = ((sflags) & (mask)) | (pflags);                               \
    102         CHANGEFLAGS(path, oflags);                                            \
    103 } while (0)
    104 
    105 /* CLEARFLAGS:
    106  * given pflags, reset the flags specified in sflags and selected by mask
    107  * (the other flags are left unchanged). oflags is
    108  * passed as reference to check if chflags is necessary.
    109  */
    110 #define CLEARFLAGS(path, sflags, pflags, oflags, mask)                        \
    111 do {                                                                          \
    112 	flags = (~((sflags) & (mask)) & CH_MASK) & (pflags);                  \
    113         CHANGEFLAGS(path, oflags);                                            \
    114 } while (0)
    115 
    116 int
    117 compare(const char *name, NODE *s, FTSENT *p)
    118 {
    119 	u_int32_t len, val, flags;
    120 	int fd, label;
    121 	const char *cp;
    122 	char *tab;
    123 	char md5buf[35];
    124 
    125 	tab = NULL;
    126 	label = 0;
    127 	switch(s->type) {
    128 	case F_BLOCK:
    129 		if (!S_ISBLK(p->fts_statp->st_mode))
    130 			goto typeerr;
    131 		break;
    132 	case F_CHAR:
    133 		if (!S_ISCHR(p->fts_statp->st_mode))
    134 			goto typeerr;
    135 		break;
    136 	case F_DIR:
    137 		if (!S_ISDIR(p->fts_statp->st_mode))
    138 			goto typeerr;
    139 		break;
    140 	case F_FIFO:
    141 		if (!S_ISFIFO(p->fts_statp->st_mode))
    142 			goto typeerr;
    143 		break;
    144 	case F_FILE:
    145 		if (!S_ISREG(p->fts_statp->st_mode))
    146 			goto typeerr;
    147 		break;
    148 	case F_LINK:
    149 		if (!S_ISLNK(p->fts_statp->st_mode))
    150 			goto typeerr;
    151 		break;
    152 	case F_SOCK:
    153 		if (!S_ISSOCK(p->fts_statp->st_mode)) {
    154 typeerr:		LABEL;
    155 			(void)printf("\ttype (%s, %s)\n",
    156 			    ftype(s->type), inotype(p->fts_statp->st_mode));
    157 		}
    158 		break;
    159 	}
    160 	if (iflag && !uflag) {
    161 		if (s->flags & F_FLAGS)
    162 		    SETFLAGS(p->fts_accpath, s->st_flags,
    163 			p->fts_statp->st_flags, p->fts_statp->st_flags,
    164 			SP_FLGS);
    165 		return (label);
    166         }
    167 	if (mflag && !uflag) {
    168 		if (s->flags & F_FLAGS)
    169 		    CLEARFLAGS(p->fts_accpath, s->st_flags,
    170 			p->fts_statp->st_flags, p->fts_statp->st_flags,
    171 			SP_FLGS);
    172 		return (label);
    173         }
    174 	/* Set the uid/gid first, then set the mode. */
    175 	if (s->flags & (F_UID | F_UNAME) && s->st_uid != p->fts_statp->st_uid) {
    176 		LABEL;
    177 		(void)printf("%suser (%lu, %lu",
    178 		    tab, (u_long)s->st_uid, (u_long)p->fts_statp->st_uid);
    179 		if (uflag) {
    180 			if (chown(p->fts_accpath, s->st_uid, -1))
    181 				(void)printf(", not modified: %s)\n",
    182 				    strerror(errno));
    183 			else
    184 				(void)printf(", modified)\n");
    185 		} else
    186 			(void)printf(")\n");
    187 		tab = "\t";
    188 	}
    189 	if (s->flags & (F_GID | F_GNAME) && s->st_gid != p->fts_statp->st_gid) {
    190 		LABEL;
    191 		(void)printf("%sgid (%lu, %lu",
    192 		    tab, (u_long)s->st_gid, (u_long)p->fts_statp->st_gid);
    193 		if (uflag) {
    194 			if (chown(p->fts_accpath, -1, s->st_gid))
    195 				(void)printf(", not modified: %s)\n",
    196 				    strerror(errno));
    197 			else
    198 				(void)printf(", modified)\n");
    199 		}
    200 		else
    201 			(void)printf(")\n");
    202 		tab = "\t";
    203 	}
    204 	if (s->flags & F_MODE &&
    205 	    s->st_mode != (p->fts_statp->st_mode & MBITS)) {
    206 		if (lflag) {
    207 			mode_t tmode, mode;
    208 
    209 			tmode = s->st_mode;
    210 			mode = p->fts_statp->st_mode & MBITS;
    211 			/*
    212 			 * if none of the suid/sgid/etc bits are set,
    213 			 * then if the mode is a subset of the target,
    214 			 * skip.
    215 			 */
    216 			if (!((tmode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) ||
    217 			    (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO))))
    218 				if ((mode | tmode) == tmode)
    219 					goto skip;
    220 		}
    221 
    222 		LABEL;
    223 		(void)printf("%spermissions (%#lo, %#lo",
    224 		    tab, (u_long)s->st_mode,
    225 		    (u_long)p->fts_statp->st_mode & MBITS);
    226 		if (uflag) {
    227 			if (chmod(p->fts_accpath, s->st_mode))
    228 				(void)printf(", not modified: %s)\n",
    229 				    strerror(errno));
    230 			else
    231 				(void)printf(", modified)\n");
    232 		}
    233 		else
    234 			(void)printf(")\n");
    235 		tab = "\t";
    236 	skip:
    237 	}
    238 	if (s->flags & F_NLINK && s->type != F_DIR &&
    239 	    s->st_nlink != p->fts_statp->st_nlink) {
    240 		LABEL;
    241 		(void)printf("%slink count (%lu, %lu)\n",
    242 		    tab, (u_long)s->st_nlink, (u_long)p->fts_statp->st_nlink);
    243 		tab = "\t";
    244 	}
    245 	if (s->flags & F_SIZE && s->st_size != p->fts_statp->st_size) {
    246 		LABEL;
    247 		(void)printf("%ssize (%lld, %lld)\n",
    248 		    tab, (long long)s->st_size,
    249 		    (long long)p->fts_statp->st_size);
    250 		tab = "\t";
    251 	}
    252 	/*
    253 	 * XXX
    254 	 * Since utimes(2) only takes a timeval, there's no point in
    255 	 * comparing the low bits of the timespec nanosecond field.  This
    256 	 * will only result in mismatches that we can never fix.
    257 	 *
    258 	 * Doesn't display microsecond differences.
    259 	 */
    260 	if (s->flags & F_TIME) {
    261 		struct timeval tv[2];
    262 		struct stat *ps = p->fts_statp;
    263 		time_t smtime = s->st_mtimespec.tv_sec;
    264 
    265 #ifdef BSD4_4
    266 		time_t pmtime = ps->st_mtimespec.tv_sec;
    267 
    268 		TIMESPEC_TO_TIMEVAL(&tv[1], &ps->st_mtimespec);
    269 #else
    270 		time_t pmtime = (time_t)ps->st_mtime;
    271 
    272 		tv[1].tv_sec = ps->st_mtime;
    273 		tv[1].tv_usec = 0;
    274 #endif
    275 		TIMESPEC_TO_TIMEVAL(&tv[0], &s->st_mtimespec);
    276 
    277 		if (tv[0].tv_sec != tv[1].tv_sec ||
    278 		    tv[0].tv_usec != tv[1].tv_usec) {
    279 			LABEL;
    280 			(void)printf("%smodification time (%.24s, ",
    281 			    tab, ctime(&smtime));
    282 			(void)printf("%.24s", ctime(&pmtime));
    283 			if (tflag) {
    284 				tv[1] = tv[0];
    285 				if (utimes(p->fts_accpath, tv))
    286 					(void)printf(", not modified: %s)\n",
    287 					    strerror(errno));
    288 				else
    289 					(void)printf(", modified)\n");
    290 			} else
    291 				(void)printf(")\n");
    292 			tab = "\t";
    293 		}
    294 	}
    295 	/*
    296 	 * XXX
    297 	 * since chflags(2) will reset file times, the utimes() above
    298 	 * may have been useless!  oh well, we'd rather have correct
    299 	 * flags, rather than times?
    300 	 */
    301         if ((s->flags & F_FLAGS) && ((s->st_flags != p->fts_statp->st_flags)
    302 	    || mflag || iflag)) {
    303 		if (s->st_flags != p->fts_statp->st_flags) {
    304 			LABEL;
    305 			(void)printf("%sflags (\"%s\" is not ", tab,
    306 			    flags_to_string(s->st_flags, "none"));
    307 			(void)printf("\"%s\"",
    308 			    flags_to_string(p->fts_statp->st_flags, "none"));
    309 		}
    310 		if (uflag) {
    311 			if (iflag)
    312 				SETFLAGS(p->fts_accpath, s->st_flags,
    313 				    0, p->fts_statp->st_flags, CH_MASK);
    314 			else if (mflag)
    315 				CLEARFLAGS(p->fts_accpath, s->st_flags,
    316 				    0, p->fts_statp->st_flags, SP_FLGS);
    317 			else
    318 				SETFLAGS(p->fts_accpath, s->st_flags,
    319 			     	    0, p->fts_statp->st_flags,
    320 				    (~SP_FLGS & CH_MASK));
    321 		} else
    322 			(void)printf(")\n");
    323 		tab = "\t";
    324 	}
    325 	if (s->flags & F_CKSUM) {
    326 		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0) {
    327 			LABEL;
    328 			(void)printf("%scksum: %s: %s\n",
    329 			    tab, p->fts_accpath, strerror(errno));
    330 			tab = "\t";
    331 		} else if (crc(fd, &val, &len)) {
    332 			(void)close(fd);
    333 			LABEL;
    334 			(void)printf("%scksum: %s: %s\n",
    335 			    tab, p->fts_accpath, strerror(errno));
    336 			tab = "\t";
    337 		} else {
    338 			(void)close(fd);
    339 			if (s->cksum != val) {
    340 				LABEL;
    341 				(void)printf("%scksum (%lu, %lu)\n",
    342 				    tab, s->cksum, (unsigned long)val);
    343 			}
    344 			tab = "\t";
    345 		}
    346 	}
    347 	if (s->flags & F_MD5) {
    348 		if (MD5File(p->fts_accpath, md5buf) == NULL) {
    349 			LABEL;
    350 			(void)printf("%smd5: %s: %s\n",
    351 			    tab, p->fts_accpath, strerror(errno));
    352 			tab = "\t";
    353 		} else {
    354 			if (strcmp(s->md5sum, md5buf)) {
    355 				LABEL;
    356 				(void)printf("%smd5 (0x%s, 0x%s)\n",
    357 				    tab, s->md5sum, md5buf);
    358 			}
    359 			tab = "\t";
    360 		}
    361 	}
    362 
    363 	if (s->flags & F_SLINK && strcmp(cp = rlink(name), s->slink)) {
    364 		LABEL;
    365 		(void)printf("%slink ref (%s, %s)\n", tab, cp, s->slink);
    366 	}
    367 	return (label);
    368 }
    369 
    370 const char *
    371 inotype(u_int type)
    372 {
    373 
    374 	return (ftype(type & S_IFMT));
    375 }
    376 
    377 static const char *
    378 ftype(u_int type)
    379 {
    380 
    381 	switch(type) {
    382 	case F_BLOCK:
    383 	case S_IFBLK:
    384 		return ("block");
    385 	case F_CHAR:
    386 	case S_IFCHR:
    387 		return ("char");
    388 	case F_DIR:
    389 	case S_IFDIR:
    390 		return ("dir");
    391 	case F_FIFO:
    392 	case S_IFIFO:
    393 		return ("fifo");
    394 	case F_FILE:
    395 	case S_IFREG:
    396 		return ("file");
    397 	case F_LINK:
    398 	case S_IFLNK:
    399 		return ("link");
    400 	case F_SOCK:
    401 	case S_IFSOCK:
    402 		return ("socket");
    403 	default:
    404 		return ("unknown");
    405 	}
    406 	/* NOTREACHED */
    407 }
    408 
    409 const char *
    410 rlink(const char *name)
    411 {
    412 	static char lbuf[MAXPATHLEN];
    413 	int len;
    414 
    415 	if ((len = readlink(name, lbuf, sizeof(lbuf))) == -1)
    416 		mtree_err("%s: %s", name, strerror(errno));
    417 	lbuf[len] = '\0';
    418 	return (lbuf);
    419 }
    420