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compare.c revision 1.32 
      1 /*	$NetBSD: compare.c,v 1.32 2001/10/22 07:07:46 lukem 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 1.32 2001/10/22 07:07:46 lukem Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include <sys/param.h>
     46 
     47 #include <errno.h>
     48 #include <fcntl.h>
     49 #include <fts.h>
     50 #include <md5.h>
     51 #include <stdio.h>
     52 #include <string.h>
     53 #include <time.h>
     54 #include <unistd.h>
     55 
     56 #include "mtree.h"
     57 #include "extern.h"
     58 
     59 #define	INDENTNAMELEN	8
     60 #define MARK                                                                  \
     61 do {                                                                          \
     62 	len = printf("%s: ", RP(p));                                          \
     63 	if (len > INDENTNAMELEN) {                                            \
     64 		tab = "\t";                                                   \
     65 		(void)printf("\n");                                           \
     66 	} else {                                                              \
     67 		tab = "";                                                     \
     68 		(void)printf("%*s", INDENTNAMELEN - (int)len, "");            \
     69 	}                                                                     \
     70 } while (0)
     71 #define	LABEL if (!label++) MARK
     72 
     73 #define CHANGEFLAGS(path, oflags) \
     74 	if (flags != (oflags)) {                                              \
     75 		if (!label) {                                                 \
     76 			MARK;                                                 \
     77 			(void)printf("%sflags (\"%s\"", tab,                  \
     78 			    flags_to_string(p->fts_statp->st_flags, "none")); \
     79 		}                                                             \
     80 		if (chflags(path, flags)) {                                   \
     81 			label++;                                              \
     82 			(void)printf(", not modified: %s)\n",                 \
     83 			    strerror(errno));                                 \
     84 		} else                                                        \
     85 			(void)printf(", modified to \"%s\")\n",               \
     86 			     flags_to_string(flags, "none"));                 \
     87 	}
     88 
     89 /* SETFLAGS:
     90  * given pflags, additionally set those flags specified in sflags and
     91  * selected by mask (the other flags are left unchanged). oflags is
     92  * passed as reference to check if chflags is necessary.
     93  */
     94 #define SETFLAGS(path, sflags, pflags, oflags, mask)                          \
     95 do {                                                                          \
     96 	flags = ((sflags) & (mask)) | (pflags);                               \
     97         CHANGEFLAGS(path, oflags);                                            \
     98 } while (0)
     99 
    100 /* CLEARFLAGS:
    101  * given pflags, reset the flags specified in sflags and selected by mask
    102  * (the other flags are left unchanged). oflags is
    103  * passed as reference to check if chflags is necessary.
    104  */
    105 #define CLEARFLAGS(path, sflags, pflags, oflags, mask)                        \
    106 do {                                                                          \
    107 	flags = (~((sflags) & (mask)) & CH_MASK) & (pflags);                  \
    108         CHANGEFLAGS(path, oflags);                                            \
    109 } while (0)
    110 
    111 int
    112 compare(const char *name, NODE *s, FTSENT *p)
    113 {
    114 	u_int32_t len, val, flags;
    115 	int fd, label;
    116 	const char *cp, *tab;
    117 	char md5buf[35];
    118 
    119 	tab = NULL;
    120 	label = 0;
    121 	switch(s->type) {
    122 	case F_BLOCK:
    123 		if (!S_ISBLK(p->fts_statp->st_mode))
    124 			goto typeerr;
    125 		break;
    126 	case F_CHAR:
    127 		if (!S_ISCHR(p->fts_statp->st_mode))
    128 			goto typeerr;
    129 		break;
    130 	case F_DIR:
    131 		if (!S_ISDIR(p->fts_statp->st_mode))
    132 			goto typeerr;
    133 		break;
    134 	case F_FIFO:
    135 		if (!S_ISFIFO(p->fts_statp->st_mode))
    136 			goto typeerr;
    137 		break;
    138 	case F_FILE:
    139 		if (!S_ISREG(p->fts_statp->st_mode))
    140 			goto typeerr;
    141 		break;
    142 	case F_LINK:
    143 		if (!S_ISLNK(p->fts_statp->st_mode))
    144 			goto typeerr;
    145 		break;
    146 	case F_SOCK:
    147 		if (!S_ISSOCK(p->fts_statp->st_mode)) {
    148 typeerr:		LABEL;
    149 			(void)printf("\ttype (%s, %s)\n",
    150 			    nodetype(s->type), inotype(p->fts_statp->st_mode));
    151 		}
    152 		break;
    153 	}
    154 	if (iflag && !uflag) {
    155 		if (s->flags & F_FLAGS)
    156 		    SETFLAGS(p->fts_accpath, s->st_flags,
    157 			p->fts_statp->st_flags, p->fts_statp->st_flags,
    158 			SP_FLGS);
    159 		return (label);
    160         }
    161 	if (mflag && !uflag) {
    162 		if (s->flags & F_FLAGS)
    163 		    CLEARFLAGS(p->fts_accpath, s->st_flags,
    164 			p->fts_statp->st_flags, p->fts_statp->st_flags,
    165 			SP_FLGS);
    166 		return (label);
    167         }
    168 	/* Set the uid/gid first, then set the mode. */
    169 	if (s->flags & (F_UID | F_UNAME) && s->st_uid != p->fts_statp->st_uid) {
    170 		LABEL;
    171 		(void)printf("%suser (%lu, %lu",
    172 		    tab, (u_long)s->st_uid, (u_long)p->fts_statp->st_uid);
    173 		if (uflag) {
    174 			if (chown(p->fts_accpath, s->st_uid, -1))
    175 				(void)printf(", not modified: %s)\n",
    176 				    strerror(errno));
    177 			else
    178 				(void)printf(", modified)\n");
    179 		} else
    180 			(void)printf(")\n");
    181 		tab = "\t";
    182 	}
    183 	if (s->flags & (F_GID | F_GNAME) && s->st_gid != p->fts_statp->st_gid) {
    184 		LABEL;
    185 		(void)printf("%sgid (%lu, %lu",
    186 		    tab, (u_long)s->st_gid, (u_long)p->fts_statp->st_gid);
    187 		if (uflag) {
    188 			if (chown(p->fts_accpath, -1, s->st_gid))
    189 				(void)printf(", not modified: %s)\n",
    190 				    strerror(errno));
    191 			else
    192 				(void)printf(", modified)\n");
    193 		}
    194 		else
    195 			(void)printf(")\n");
    196 		tab = "\t";
    197 	}
    198 	if (s->flags & F_MODE &&
    199 	    s->st_mode != (p->fts_statp->st_mode & MBITS)) {
    200 		if (lflag) {
    201 			mode_t tmode, mode;
    202 
    203 			tmode = s->st_mode;
    204 			mode = p->fts_statp->st_mode & MBITS;
    205 			/*
    206 			 * if none of the suid/sgid/etc bits are set,
    207 			 * then if the mode is a subset of the target,
    208 			 * skip.
    209 			 */
    210 			if (!((tmode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) ||
    211 			    (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO))))
    212 				if ((mode | tmode) == tmode)
    213 					goto skip;
    214 		}
    215 
    216 		LABEL;
    217 		(void)printf("%spermissions (%#lo, %#lo",
    218 		    tab, (u_long)s->st_mode,
    219 		    (u_long)p->fts_statp->st_mode & MBITS);
    220 		if (uflag) {
    221 			if (chmod(p->fts_accpath, s->st_mode))
    222 				(void)printf(", not modified: %s)\n",
    223 				    strerror(errno));
    224 			else
    225 				(void)printf(", modified)\n");
    226 		}
    227 		else
    228 			(void)printf(")\n");
    229 		tab = "\t";
    230 	skip:	;
    231 	}
    232 	if (s->flags & F_DEV &&
    233 	    (s->type == F_BLOCK || s->type == F_CHAR) &&
    234 	    s->st_rdev != p->fts_statp->st_rdev) {
    235 		LABEL;
    236 		(void)printf("%sdevice (%#x, %#x",
    237 		    tab, s->st_rdev, p->fts_statp->st_rdev);
    238 		if (uflag) {
    239 	/* XXXLUKEM: unlink first ? */
    240 			if (mknod(p->fts_accpath, s->st_mode, s->st_rdev))
    241 				(void)printf(", not modified: %s)\n",
    242 				    strerror(errno));
    243 			else
    244 				(void)printf(", modified)\n");
    245 		} else
    246 			(void)printf(")\n");
    247 		tab = "\t";
    248 	}
    249 	if (s->flags & F_NLINK && s->type != F_DIR &&
    250 	    s->st_nlink != p->fts_statp->st_nlink) {
    251 		LABEL;
    252 		(void)printf("%slink count (%lu, %lu)\n",
    253 		    tab, (u_long)s->st_nlink, (u_long)p->fts_statp->st_nlink);
    254 		tab = "\t";
    255 	}
    256 	if (s->flags & F_SIZE && s->st_size != p->fts_statp->st_size) {
    257 		LABEL;
    258 		(void)printf("%ssize (%lld, %lld)\n",
    259 		    tab, (long long)s->st_size,
    260 		    (long long)p->fts_statp->st_size);
    261 		tab = "\t";
    262 	}
    263 	/*
    264 	 * XXX
    265 	 * Since utimes(2) only takes a timeval, there's no point in
    266 	 * comparing the low bits of the timespec nanosecond field.  This
    267 	 * will only result in mismatches that we can never fix.
    268 	 *
    269 	 * Doesn't display microsecond differences.
    270 	 */
    271 	if (s->flags & F_TIME) {
    272 		struct timeval tv[2];
    273 		struct stat *ps = p->fts_statp;
    274 		time_t smtime = s->st_mtimespec.tv_sec;
    275 
    276 #ifdef BSD4_4
    277 		time_t pmtime = ps->st_mtimespec.tv_sec;
    278 
    279 		TIMESPEC_TO_TIMEVAL(&tv[1], &ps->st_mtimespec);
    280 #else
    281 		time_t pmtime = (time_t)ps->st_mtime;
    282 
    283 		tv[1].tv_sec = ps->st_mtime;
    284 		tv[1].tv_usec = 0;
    285 #endif
    286 		TIMESPEC_TO_TIMEVAL(&tv[0], &s->st_mtimespec);
    287 
    288 		if (tv[0].tv_sec != tv[1].tv_sec ||
    289 		    tv[0].tv_usec != tv[1].tv_usec) {
    290 			LABEL;
    291 			(void)printf("%smodification time (%.24s, ",
    292 			    tab, ctime(&smtime));
    293 			(void)printf("%.24s", ctime(&pmtime));
    294 			if (tflag) {
    295 				tv[1] = tv[0];
    296 				if (utimes(p->fts_accpath, tv))
    297 					(void)printf(", not modified: %s)\n",
    298 					    strerror(errno));
    299 				else
    300 					(void)printf(", modified)\n");
    301 			} else
    302 				(void)printf(")\n");
    303 			tab = "\t";
    304 		}
    305 	}
    306 	/*
    307 	 * XXX
    308 	 * since chflags(2) will reset file times, the utimes() above
    309 	 * may have been useless!  oh well, we'd rather have correct
    310 	 * flags, rather than times?
    311 	 */
    312         if ((s->flags & F_FLAGS) && ((s->st_flags != p->fts_statp->st_flags)
    313 	    || mflag || iflag)) {
    314 		if (s->st_flags != p->fts_statp->st_flags) {
    315 			LABEL;
    316 			(void)printf("%sflags (\"%s\" is not ", tab,
    317 			    flags_to_string(s->st_flags, "none"));
    318 			(void)printf("\"%s\"",
    319 			    flags_to_string(p->fts_statp->st_flags, "none"));
    320 		}
    321 		if (uflag) {
    322 			if (iflag)
    323 				SETFLAGS(p->fts_accpath, s->st_flags,
    324 				    0, p->fts_statp->st_flags, CH_MASK);
    325 			else if (mflag)
    326 				CLEARFLAGS(p->fts_accpath, s->st_flags,
    327 				    0, p->fts_statp->st_flags, SP_FLGS);
    328 			else
    329 				SETFLAGS(p->fts_accpath, s->st_flags,
    330 			     	    0, p->fts_statp->st_flags,
    331 				    (~SP_FLGS & CH_MASK));
    332 		} else
    333 			(void)printf(")\n");
    334 		tab = "\t";
    335 	}
    336 	if (s->flags & F_CKSUM) {
    337 		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0) {
    338 			LABEL;
    339 			(void)printf("%scksum: %s: %s\n",
    340 			    tab, p->fts_accpath, strerror(errno));
    341 			tab = "\t";
    342 		} else if (crc(fd, &val, &len)) {
    343 			(void)close(fd);
    344 			LABEL;
    345 			(void)printf("%scksum: %s: %s\n",
    346 			    tab, p->fts_accpath, strerror(errno));
    347 			tab = "\t";
    348 		} else {
    349 			(void)close(fd);
    350 			if (s->cksum != val) {
    351 				LABEL;
    352 				(void)printf("%scksum (%lu, %lu)\n",
    353 				    tab, s->cksum, (unsigned long)val);
    354 			}
    355 			tab = "\t";
    356 		}
    357 	}
    358 	if (s->flags & F_MD5) {
    359 		if (MD5File(p->fts_accpath, md5buf) == NULL) {
    360 			LABEL;
    361 			(void)printf("%smd5: %s: %s\n",
    362 			    tab, p->fts_accpath, strerror(errno));
    363 			tab = "\t";
    364 		} else {
    365 			if (strcmp(s->md5sum, md5buf)) {
    366 				LABEL;
    367 				(void)printf("%smd5 (0x%s, 0x%s)\n",
    368 				    tab, s->md5sum, md5buf);
    369 			}
    370 			tab = "\t";
    371 		}
    372 	}
    373 
    374 	if (s->flags & F_SLINK && strcmp(cp = rlink(name), s->slink)) {
    375 		LABEL;
    376 		(void)printf("%slink ref (%s, %s)\n", tab, cp, s->slink);
    377 	}
    378 	return (label);
    379 }
    380 
    381 const char *
    382 rlink(const char *name)
    383 {
    384 	static char lbuf[MAXPATHLEN];
    385 	int len;
    386 
    387 	if ((len = readlink(name, lbuf, sizeof(lbuf))) == -1)
    388 		mtree_err("%s: %s", name, strerror(errno));
    389 	lbuf[len] = '\0';
    390 	return (lbuf);
    391 }
    392