xref: /dragonfly/usr.sbin/mtree/compare.c (revision dc71b7ab) 
1 /*-
2  * Copyright (c) 1989, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * @(#)compare.c	8.1 (Berkeley) 6/6/93
30  * $FreeBSD: src/usr.sbin/mtree/compare.c,v 1.15.2.4 2003/05/07 17:55:17 tobez Exp $
31  * $DragonFly: src/usr.sbin/mtree/compare.c,v 1.5 2004/03/15 16:24:22 dillon Exp $
32  */
33 
34 #include <sys/param.h>
35 #include <sys/stat.h>
36 #include <err.h>
37 #include <errno.h>
38 #include <fcntl.h>
39 #include <fts.h>
40 #ifdef MD5
41 #include <md5.h>
42 #endif
43 #ifdef SHA1
44 #include <sha.h>
45 #endif
46 #ifdef RMD160
47 #include <ripemd.h>
48 #endif
49 #include <stdio.h>
50 #include <time.h>
51 #include <unistd.h>
52 #include "mtree.h"
53 #include "extern.h"
54 
55 static const char *ftype(u_int);
56 
57 #define	INDENTNAMELEN	8
58 #define	LABEL \
59 	if (!label++) { \
60 		len = printf("%s changed\n", RP(p)); \
61 		tab = "\t"; \
62 	}
63 
64 int
65 compare(NODE *s, FTSENT *p)
66 {
67 	u_long len, val;
68 	int fd, label;
69 	char *cp, *fflags;
70 	const char *tab = "";
71 
72 	label = 0;
73 	switch(s->type) {
74 	case F_BLOCK:
75 		if (!S_ISBLK(p->fts_statp->st_mode))
76 			goto typeerr;
77 		break;
78 	case F_CHAR:
79 		if (!S_ISCHR(p->fts_statp->st_mode))
80 			goto typeerr;
81 		break;
82 	case F_DIR:
83 		if (!S_ISDIR(p->fts_statp->st_mode))
84 			goto typeerr;
85 		break;
86 	case F_FIFO:
87 		if (!S_ISFIFO(p->fts_statp->st_mode))
88 			goto typeerr;
89 		break;
90 	case F_FILE:
91 		if (!S_ISREG(p->fts_statp->st_mode))
92 			goto typeerr;
93 		break;
94 	case F_LINK:
95 		if (!S_ISLNK(p->fts_statp->st_mode))
96 			goto typeerr;
97 		break;
98 	case F_SOCK:
99 		if (!S_ISSOCK(p->fts_statp->st_mode)) {
100 typeerr:		LABEL;
101 			printf("\ttype expected %s found %s\n",
102 			    ftype(s->type), inotype(p->fts_statp->st_mode));
103 			return (label);
104 		}
105 		break;
106 	}
107 	/* Set the uid/gid first, then set the mode. */
108 	if (s->flags & (F_UID | F_UNAME) && s->st_uid != p->fts_statp->st_uid) {
109 		LABEL;
110 		printf("%suser expected %lu found %lu",
111 		    tab, (u_long)s->st_uid, (u_long)p->fts_statp->st_uid);
112 		if (uflag)
113 			if (chown(p->fts_accpath, s->st_uid, -1))
114 				printf(" not modified: %s\n",
115 				    strerror(errno));
116 			else
117 				printf(" modified\n");
118 		else
119 			printf("\n");
120 		tab = "\t";
121 	}
122 	if (s->flags & (F_GID | F_GNAME) && s->st_gid != p->fts_statp->st_gid) {
123 		LABEL;
124 		printf("%sgid expected %lu found %lu",
125 		    tab, (u_long)s->st_gid, (u_long)p->fts_statp->st_gid);
126 		if (uflag)
127 			if (chown(p->fts_accpath, -1, s->st_gid))
128 				printf(" not modified: %s\n",
129 				    strerror(errno));
130 			else
131 				printf(" modified\n");
132 		else
133 			printf("\n");
134 		tab = "\t";
135 	}
136 	if (s->flags & F_MODE &&
137 	    !S_ISLNK(p->fts_statp->st_mode) &&
138 	    s->st_mode != (p->fts_statp->st_mode & MBITS)) {
139 		LABEL;
140 		printf("%spermissions expected %#o found %#o",
141 		    tab, s->st_mode, p->fts_statp->st_mode & MBITS);
142 		if (uflag)
143 			if (chmod(p->fts_accpath, s->st_mode))
144 				printf(" not modified: %s\n",
145 				    strerror(errno));
146 			else
147 				printf(" modified\n");
148 		else
149 			printf("\n");
150 		tab = "\t";
151 	}
152 	if (s->flags & F_NLINK && s->type != F_DIR &&
153 	    s->st_nlink != p->fts_statp->st_nlink) {
154 		LABEL;
155 		printf("%slink_count expected %u found %u\n",
156 		    tab, s->st_nlink, p->fts_statp->st_nlink);
157 		tab = "\t";
158 	}
159 	if (s->flags & F_SIZE && s->st_size != p->fts_statp->st_size &&
160 		!S_ISDIR(p->fts_statp->st_mode)) {
161 		LABEL;
162 		printf("%ssize expected %jd found %jd\n", tab,
163 		    (intmax_t)s->st_size, (intmax_t)p->fts_statp->st_size);
164 		tab = "\t";
165 	}
166 	/*
167 	 * XXX
168 	 * Catches nano-second differences, but doesn't display them.
169 	 */
170 	if ((s->flags & F_TIME) &&
171 	     ((s->st_mtimespec.tv_sec != p->fts_statp->st_mtimespec.tv_sec) ||
172 	     (s->st_mtimespec.tv_nsec != p->fts_statp->st_mtimespec.tv_nsec))) {
173 		LABEL;
174 		printf("%smodification time expected %.24s ",
175 		    tab, ctime(&s->st_mtimespec.tv_sec));
176 		printf("found %.24s\n",
177 		    ctime(&p->fts_statp->st_mtimespec.tv_sec));
178 		tab = "\t";
179 	}
180 	if (s->flags & F_CKSUM) {
181 		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0) {
182 			LABEL;
183 			printf("%scksum: %s: %s\n",
184 			    tab, p->fts_accpath, strerror(errno));
185 			tab = "\t";
186 		} else if (crc(fd, &val, &len)) {
187 			close(fd);
188 			LABEL;
189 			printf("%scksum: %s: %s\n",
190 			    tab, p->fts_accpath, strerror(errno));
191 			tab = "\t";
192 		} else {
193 			close(fd);
194 			if (s->cksum != val) {
195 				LABEL;
196 				printf("%scksum expected %lu found %lu\n",
197 				    tab, s->cksum, val);
198 				tab = "\t";
199 			}
200 		}
201 	}
202 	/*
203 	 * XXX
204 	 * since chflags(2) will reset file times, the utimes() above
205 	 * may have been useless!  oh well, we'd rather have correct
206 	 * flags, rather than times?
207 	 */
208 	if ((s->flags & F_FLAGS) && s->st_flags != p->fts_statp->st_flags) {
209 		LABEL;
210 		fflags = flags_to_string(s->st_flags);
211 		printf("%sflags expected \"%s\"", tab, fflags);
212 		free(fflags);
213 
214 		fflags = flags_to_string(p->fts_statp->st_flags);
215 		printf(" found \"%s\"", fflags);
216 		free(fflags);
217 
218 		if (uflag)
219 			if (chflags(p->fts_accpath, s->st_flags))
220 				printf(" not modified: %s\n",
221 				    strerror(errno));
222 			else
223 				printf(" modified\n");
224 		else
225 			printf("\n");
226 		tab = "\t";
227 	}
228 #ifdef MD5
229 	if (s->flags & F_MD5) {
230 		char *new_digest, buf[33];
231 
232 		new_digest = MD5File(p->fts_accpath, buf);
233 		if (!new_digest) {
234 			LABEL;
235 			printf("%sMD5: %s: %s\n", tab, p->fts_accpath,
236 			       strerror(errno));
237 			tab = "\t";
238 		} else if (strcmp(new_digest, s->md5digest)) {
239 			LABEL;
240 			printf("%sMD5 expected %s found %s\n", tab, s->md5digest,
241 			       new_digest);
242 			tab = "\t";
243 		}
244 	}
245 #endif /* MD5 */
246 #ifdef SHA1
247 	if (s->flags & F_SHA1) {
248 		char *new_digest, buf[41];
249 
250 		new_digest = SHA1_File(p->fts_accpath, buf);
251 		if (!new_digest) {
252 			LABEL;
253 			printf("%sSHA-1: %s: %s\n", tab, p->fts_accpath,
254 			       strerror(errno));
255 			tab = "\t";
256 		} else if (strcmp(new_digest, s->sha1digest)) {
257 			LABEL;
258 			printf("%sSHA-1 expected %s found %s\n",
259 			       tab, s->sha1digest, new_digest);
260 			tab = "\t";
261 		}
262 	}
263 #endif /* SHA1 */
264 #ifdef RMD160
265 	if (s->flags & F_RMD160) {
266 		char *new_digest, buf[41];
267 
268 		new_digest = RIPEMD160_File(p->fts_accpath, buf);
269 		if (!new_digest) {
270 			LABEL;
271 			printf("%sRIPEMD160: %s: %s\n", tab,
272 			       p->fts_accpath, strerror(errno));
273 			tab = "\t";
274 		} else if (strcmp(new_digest, s->rmd160digest)) {
275 			LABEL;
276 			printf("%sRIPEMD160 expected %s found %s\n",
277 			       tab, s->rmd160digest, new_digest);
278 			tab = "\t";
279 		}
280 	}
281 #endif /* RMD160 */
282 
283 	if (s->flags & F_SLINK &&
284 	    strcmp(cp = rlink(p->fts_accpath), s->slink)) {
285 		LABEL;
286 		printf("%slink_ref expected %s found %s\n",
287 		      tab, s->slink, cp);
288 	}
289 	return (label);
290 }
291 
292 const char *
293 inotype(u_int type)
294 {
295 	switch(type & S_IFMT) {
296 	case S_IFBLK:
297 		return ("block");
298 	case S_IFCHR:
299 		return ("char");
300 	case S_IFDIR:
301 		return ("dir");
302 	case S_IFIFO:
303 		return ("fifo");
304 	case S_IFREG:
305 		return ("file");
306 	case S_IFLNK:
307 		return ("link");
308 	case S_IFSOCK:
309 		return ("socket");
310 	default:
311 		return ("unknown");
312 	}
313 	/* NOTREACHED */
314 }
315 
316 static const char *
317 ftype(u_int type)
318 {
319 	switch(type) {
320 	case F_BLOCK:
321 		return ("block");
322 	case F_CHAR:
323 		return ("char");
324 	case F_DIR:
325 		return ("dir");
326 	case F_FIFO:
327 		return ("fifo");
328 	case F_FILE:
329 		return ("file");
330 	case F_LINK:
331 		return ("link");
332 	case F_SOCK:
333 		return ("socket");
334 	default:
335 		return ("unknown");
336 	}
337 	/* NOTREACHED */
338 }
339 
340 char *
341 rlink(char *name)
342 {
343 	static char lbuf[MAXPATHLEN];
344 	int len;
345 
346 	if ((len = readlink(name, lbuf, sizeof(lbuf) - 1)) == -1)
347 		err(1, "line %d: %s", lineno, name);
348 	lbuf[len] = '\0';
349 	return (lbuf);
350 }
351