xref: /freebsd/contrib/mtree/create.c (revision 38f0b757fd84d17d0fc24739a7cda160c4516d81) 
1 /*	$NetBSD: create.c,v 1.72 2013/10/17 17:22:59 christos 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. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #if HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 #endif
35 
36 #include <sys/cdefs.h>
37 #if defined(__RCSID) && !defined(lint)
38 #if 0
39 static char sccsid[] = "@(#)create.c	8.1 (Berkeley) 6/6/93";
40 #else
41 __RCSID("$NetBSD: create.c,v 1.72 2013/10/17 17:22:59 christos Exp $");
42 #endif
43 #endif /* not lint */
44 
45 #include <sys/param.h>
46 #include <sys/stat.h>
47 
48 #if ! HAVE_NBTOOL_CONFIG_H
49 #include <dirent.h>
50 #endif
51 
52 #include <errno.h>
53 #include <fcntl.h>
54 #include <grp.h>
55 #include <pwd.h>
56 #include <stdio.h>
57 #include <stdarg.h>
58 #include <stdint.h>
59 #include <stdlib.h>
60 #include <string.h>
61 #include <time.h>
62 #include <unistd.h>
63 
64 #ifndef NO_MD5
65 #include <md5.h>
66 #endif
67 #ifndef NO_RMD160
68 #include <rmd160.h>
69 #endif
70 #ifndef NO_SHA1
71 #include <sha1.h>
72 #endif
73 #ifndef NO_SHA2
74 #include <sha2.h>
75 #endif
76 
77 #include "extern.h"
78 
79 #define	INDENTNAMELEN	15
80 #define	MAXLINELEN	80
81 
82 static gid_t gid;
83 static uid_t uid;
84 static mode_t mode;
85 static u_long flags;
86 
87 #ifdef __FreeBSD__
88 #define	FTS_CONST const
89 #else
90 #define	FTS_CONST
91 #endif
92 
93 static int	dcmp(const FTSENT *FTS_CONST *, const FTSENT *FTS_CONST *);
94 static void	output(int, int *, const char *, ...)
95 	__attribute__((__format__(__printf__, 3, 4)));
96 static int	statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
97 static void	statf(int, FTSENT *);
98 
99 void
100 cwalk(void)
101 {
102 	FTS *t;
103 	FTSENT *p;
104 	time_t clocktime;
105 	char host[MAXHOSTNAMELEN + 1];
106 	const char *user;
107 	char *argv[2];
108 	char  dot[] = ".";
109 	int indent = 0;
110 
111 	argv[0] = dot;
112 	argv[1] = NULL;
113 
114 	time(&clocktime);
115 	gethostname(host, sizeof(host));
116 	host[sizeof(host) - 1] = '\0';
117 	if ((user = getlogin()) == NULL) {
118 		struct passwd *pw;
119 		user = (pw = getpwuid(getuid())) == NULL ? pw->pw_name :
120 		    "<unknown>";
121 	}
122 
123 	if (!nflag)
124 		printf(
125 	    	    "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n"
126 		    "#\t   date: %s",
127 		    user, host, fullpath, ctime(&clocktime));
128 
129 	if ((t = fts_open(argv, ftsoptions, dcmp)) == NULL)
130 		mtree_err("fts_open: %s", strerror(errno));
131 	while ((p = fts_read(t)) != NULL) {
132 		if (jflag)
133 			indent = p->fts_level * 4;
134 		if (check_excludes(p->fts_name, p->fts_path)) {
135 			fts_set(t, p, FTS_SKIP);
136 			continue;
137 		}
138 		if (!find_only(p->fts_path)) {
139 			fts_set(t, p, FTS_SKIP);
140 			continue;
141 		}
142 		switch(p->fts_info) {
143 		case FTS_D:
144 			if (!bflag)
145 				printf("\n");
146 			if (!nflag)
147 				printf("# %s\n", p->fts_path);
148 			statd(t, p, &uid, &gid, &mode, &flags);
149 			statf(indent, p);
150 			break;
151 		case FTS_DP:
152 			if (p->fts_level > 0)
153 				if (!nflag)
154 					printf("%*s# %s\n", indent, "",
155 					    p->fts_path);
156 			if (p->fts_level > 0 || flavor == F_FREEBSD9) {
157 				printf("%*s..\n", indent, "");
158 				if (!bflag)
159 					printf("\n");
160 			}
161 			break;
162 		case FTS_DNR:
163 		case FTS_ERR:
164 		case FTS_NS:
165 			mtree_err("%s: %s",
166 			    p->fts_path, strerror(p->fts_errno));
167 			break;
168 		default:
169 			if (!dflag)
170 				statf(indent, p);
171 			break;
172 
173 		}
174 	}
175 	fts_close(t);
176 	if (sflag && keys & F_CKSUM)
177 		mtree_err("%s checksum: %u", fullpath, crc_total);
178 }
179 
180 static void
181 statf(int indent, FTSENT *p)
182 {
183 	u_int32_t len, val;
184 	int fd, offset;
185 	const char *name = NULL;
186 #if !defined(NO_MD5) || !defined(NO_RMD160) || !defined(NO_SHA1) || !defined(NO_SHA2)
187 	char *digestbuf;
188 #endif
189 
190 	offset = printf("%*s%s%s", indent, "",
191 	    S_ISDIR(p->fts_statp->st_mode) ? "" : "    ", vispath(p->fts_name));
192 
193 	if (offset > (INDENTNAMELEN + indent))
194 		offset = MAXLINELEN;
195 	else
196 		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
197 
198 	if (!S_ISREG(p->fts_statp->st_mode) && (flavor == F_NETBSD6 || !dflag))
199 		output(indent, &offset, "type=%s",
200 		    inotype(p->fts_statp->st_mode));
201 	if (keys & (F_UID | F_UNAME) && p->fts_statp->st_uid != uid) {
202 		if (keys & F_UNAME &&
203 		    (name = user_from_uid(p->fts_statp->st_uid, 1)) != NULL)
204 			output(indent, &offset, "uname=%s", name);
205 		if (keys & F_UID || (keys & F_UNAME && name == NULL))
206 			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
207 	}
208 	if (keys & (F_GID | F_GNAME) && p->fts_statp->st_gid != gid) {
209 		if (keys & F_GNAME &&
210 		    (name = group_from_gid(p->fts_statp->st_gid, 1)) != NULL)
211 			output(indent, &offset, "gname=%s", name);
212 		if (keys & F_GID || (keys & F_GNAME && name == NULL))
213 			output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
214 	}
215 	if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
216 		output(indent, &offset, "mode=%#o",
217 		    p->fts_statp->st_mode & MBITS);
218 	if (keys & F_DEV &&
219 	    (S_ISBLK(p->fts_statp->st_mode) || S_ISCHR(p->fts_statp->st_mode)))
220 		output(indent, &offset, "device=%#jx",
221 		    (uintmax_t)p->fts_statp->st_rdev);
222 	if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
223 		output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
224 	if (keys & F_SIZE &&
225 	    (flavor == F_FREEBSD9 || S_ISREG(p->fts_statp->st_mode)))
226 		output(indent, &offset, "size=%ju",
227 		    (uintmax_t)p->fts_statp->st_size);
228 	if (keys & F_TIME)
229 #if defined(BSD4_4) && !defined(HAVE_NBTOOL_CONFIG_H)
230 		output(indent, &offset, "time=%jd.%09ld",
231 		    (intmax_t)p->fts_statp->st_mtimespec.tv_sec,
232 		    p->fts_statp->st_mtimespec.tv_nsec);
233 #else
234 		output(indent, &offset, "time=%jd.%09ld",
235 		    (intmax_t)p->fts_statp->st_mtime, (long)0);
236 #endif
237 	if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
238 		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
239 		    crc(fd, &val, &len))
240 			mtree_err("%s: %s", p->fts_accpath, strerror(errno));
241 		close(fd);
242 		output(indent, &offset, "cksum=%lu", (long)val);
243 	}
244 #ifndef NO_MD5
245 	if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
246 		if ((digestbuf = MD5File(p->fts_accpath, NULL)) == NULL)
247 			mtree_err("%s: MD5File failed: %s", p->fts_accpath,
248 			    strerror(errno));
249 		output(indent, &offset, "%s=%s", MD5KEY, digestbuf);
250 		free(digestbuf);
251 	}
252 #endif	/* ! NO_MD5 */
253 #ifndef NO_RMD160
254 	if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
255 		if ((digestbuf = RMD160File(p->fts_accpath, NULL)) == NULL)
256 			mtree_err("%s: RMD160File failed: %s", p->fts_accpath,
257 			    strerror(errno));
258 		output(indent, &offset, "%s=%s", RMD160KEY, digestbuf);
259 		free(digestbuf);
260 	}
261 #endif	/* ! NO_RMD160 */
262 #ifndef NO_SHA1
263 	if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
264 		if ((digestbuf = SHA1File(p->fts_accpath, NULL)) == NULL)
265 			mtree_err("%s: SHA1File failed: %s", p->fts_accpath,
266 			    strerror(errno));
267 		output(indent, &offset, "%s=%s", SHA1KEY, digestbuf);
268 		free(digestbuf);
269 	}
270 #endif	/* ! NO_SHA1 */
271 #ifndef NO_SHA2
272 	if (keys & F_SHA256 && S_ISREG(p->fts_statp->st_mode)) {
273 		if ((digestbuf = SHA256_File(p->fts_accpath, NULL)) == NULL)
274 			mtree_err("%s: SHA256_File failed: %s", p->fts_accpath,
275 			    strerror(errno));
276 		output(indent, &offset, "%s=%s", SHA256KEY, digestbuf);
277 		free(digestbuf);
278 	}
279 #ifdef SHA384_BLOCK_LENGTH
280 	if (keys & F_SHA384 && S_ISREG(p->fts_statp->st_mode)) {
281 		if ((digestbuf = SHA384_File(p->fts_accpath, NULL)) == NULL)
282 			mtree_err("%s: SHA384_File failed: %s", p->fts_accpath,
283 			    strerror(errno));
284 		output(indent, &offset, "%s=%s", SHA384KEY, digestbuf);
285 		free(digestbuf);
286 	}
287 #endif
288 	if (keys & F_SHA512 && S_ISREG(p->fts_statp->st_mode)) {
289 		if ((digestbuf = SHA512_File(p->fts_accpath, NULL)) == NULL)
290 			mtree_err("%s: SHA512_File failed: %s", p->fts_accpath,
291 			    strerror(errno));
292 		output(indent, &offset, "%s=%s", SHA512KEY, digestbuf);
293 		free(digestbuf);
294 	}
295 #endif	/* ! NO_SHA2 */
296 	if (keys & F_SLINK &&
297 	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
298 		output(indent, &offset, "link=%s",
299 		    vispath(rlink(p->fts_accpath)));
300 #if HAVE_STRUCT_STAT_ST_FLAGS
301 	if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
302 		char *str = flags_to_string(p->fts_statp->st_flags, "none");
303 		output(indent, &offset, "flags=%s", str);
304 		free(str);
305 	}
306 #endif
307 	putchar('\n');
308 }
309 
310 /* XXX
311  * FLAGS2INDEX will fail once the user and system settable bits need more
312  * than one byte, respectively.
313  */
314 #define FLAGS2INDEX(x)  (((x >> 8) & 0x0000ff00) | (x & 0x000000ff))
315 
316 #define	MTREE_MAXGID	5000
317 #define	MTREE_MAXUID	5000
318 #define	MTREE_MAXMODE	(MBITS + 1)
319 #if HAVE_STRUCT_STAT_ST_FLAGS
320 #define	MTREE_MAXFLAGS  (FLAGS2INDEX(CH_MASK) + 1)   /* 1808 */
321 #else
322 #define MTREE_MAXFLAGS	1
323 #endif
324 #define	MTREE_MAXS 16
325 
326 static int
327 statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode,
328       u_long *pflags)
329 {
330 	FTSENT *p;
331 	gid_t sgid;
332 	uid_t suid;
333 	mode_t smode;
334 	u_long sflags = 0;
335 	const char *name = NULL;
336 	gid_t savegid;
337 	uid_t saveuid;
338 	mode_t savemode;
339 	u_long saveflags;
340 	u_short maxgid, maxuid, maxmode, maxflags;
341 	u_short g[MTREE_MAXGID], u[MTREE_MAXUID],
342 		m[MTREE_MAXMODE], f[MTREE_MAXFLAGS];
343 	static int first = 1;
344 
345 	savegid = *pgid;
346 	saveuid = *puid;
347 	savemode = *pmode;
348 	saveflags = *pflags;
349 	if ((p = fts_children(t, 0)) == NULL) {
350 		if (errno)
351 			mtree_err("%s: %s", RP(parent), strerror(errno));
352 		return (1);
353 	}
354 
355 	memset(g, 0, sizeof(g));
356 	memset(u, 0, sizeof(u));
357 	memset(m, 0, sizeof(m));
358 	memset(f, 0, sizeof(f));
359 
360 	maxuid = maxgid = maxmode = maxflags = 0;
361 	for (; p; p = p->fts_link) {
362 		if (flavor == F_NETBSD6 || !dflag ||
363 		    (dflag && S_ISDIR(p->fts_statp->st_mode))) {
364 			smode = p->fts_statp->st_mode & MBITS;
365 			if (smode < MTREE_MAXMODE && ++m[smode] > maxmode) {
366 				savemode = smode;
367 				maxmode = m[smode];
368 			}
369 			sgid = p->fts_statp->st_gid;
370 			if (sgid < MTREE_MAXGID && ++g[sgid] > maxgid) {
371 				savegid = sgid;
372 				maxgid = g[sgid];
373 			}
374 			suid = p->fts_statp->st_uid;
375 			if (suid < MTREE_MAXUID && ++u[suid] > maxuid) {
376 				saveuid = suid;
377 				maxuid = u[suid];
378 			}
379 
380 #if HAVE_STRUCT_STAT_ST_FLAGS
381 			sflags = FLAGS2INDEX(p->fts_statp->st_flags);
382 			if (sflags < MTREE_MAXFLAGS && ++f[sflags] > maxflags) {
383 				saveflags = p->fts_statp->st_flags;
384 				maxflags = f[sflags];
385 			}
386 #endif
387 		}
388 	}
389 	/*
390 	 * If the /set record is the same as the last one we do not need to
391 	 * output a new one.  So first we check to see if anything changed.
392 	 * Note that we always output a /set record for the first directory.
393 	 */
394 	if (((keys & (F_UNAME | F_UID)) && (*puid != saveuid)) ||
395 	    ((keys & (F_GNAME | F_GID)) && (*pgid != savegid)) ||
396 	    ((keys & F_MODE) && (*pmode != savemode)) ||
397 	    ((keys & F_FLAGS) && (*pflags != saveflags)) ||
398 	    first) {
399 		first = 0;
400 		if (flavor != F_NETBSD6 && dflag)
401 			printf("/set type=dir");
402 		else
403 			printf("/set type=file");
404 		if (keys & (F_UID | F_UNAME)) {
405 			if (keys & F_UNAME &&
406 			    (name = user_from_uid(saveuid, 1)) != NULL)
407 				printf(" uname=%s", name);
408 			if (keys & F_UID || (keys & F_UNAME && name == NULL))
409 				printf(" uid=%lu", (u_long)saveuid);
410 		}
411 		if (keys & (F_GID | F_GNAME)) {
412 			if (keys & F_GNAME &&
413 			    (name = group_from_gid(savegid, 1)) != NULL)
414 				printf(" gname=%s", name);
415 			if (keys & F_GID || (keys & F_GNAME && name == NULL))
416 				printf(" gid=%lu", (u_long)savegid);
417 		}
418 		if (keys & F_MODE)
419 			printf(" mode=%#lo", (u_long)savemode);
420 		if (keys & F_NLINK)
421 			printf(" nlink=1");
422 		if (keys & F_FLAGS) {
423 			char *str = flags_to_string(saveflags, "none");
424 			printf(" flags=%s", str);
425 			free(str);
426 		}
427 		printf("\n");
428 		*puid = saveuid;
429 		*pgid = savegid;
430 		*pmode = savemode;
431 		*pflags = saveflags;
432 	}
433 	return (0);
434 }
435 
436 /*
437  * dcmp --
438  *	used as a comparison function passed to fts_open() to control
439  *	the order in which fts_read() returns results.	We make
440  *	directories sort after non-directories, but otherwise sort in
441  *	strcmp() order.
442  *
443  * Keep this in sync with nodecmp() in spec.c.
444  */
445 static int
446 dcmp(const FTSENT *FTS_CONST *a, const FTSENT *FTS_CONST *b)
447 {
448 
449 	if (S_ISDIR((*a)->fts_statp->st_mode)) {
450 		if (!S_ISDIR((*b)->fts_statp->st_mode))
451 			return (1);
452 	} else if (S_ISDIR((*b)->fts_statp->st_mode))
453 		return (-1);
454 	return (strcmp((*a)->fts_name, (*b)->fts_name));
455 }
456 
457 void
458 output(int indent, int *offset, const char *fmt, ...)
459 {
460 	va_list ap;
461 	char buf[1024];
462 
463 	va_start(ap, fmt);
464 	vsnprintf(buf, sizeof(buf), fmt, ap);
465 	va_end(ap);
466 
467 	if (*offset + strlen(buf) > MAXLINELEN - 3) {
468 		printf(" \\\n%*s", INDENTNAMELEN + indent, "");
469 		*offset = INDENTNAMELEN + indent;
470 	}
471 	*offset += printf(" %s", buf) + 1;
472 }
473