xref: /freebsd/contrib/mtree/create.c (revision c8191bc69e371d47c087ae124ff863de342a479b) 
1 /*	$NetBSD: create.c,v 1.69 2013/02/03 19:15:17 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 1.69 2013/02/03 19:15:17 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 <stdlib.h>
59 #include <string.h>
60 #include <time.h>
61 #include <unistd.h>
62 
63 #ifndef NO_MD5
64 #include <md5.h>
65 #endif
66 #ifndef NO_RMD160
67 #include <rmd160.h>
68 #endif
69 #ifndef NO_SHA1
70 #include <sha1.h>
71 #endif
72 #ifndef NO_SHA2
73 #include <sha2.h>
74 #endif
75 
76 #include "extern.h"
77 
78 #define	INDENTNAMELEN	15
79 #define	MAXLINELEN	80
80 
81 static gid_t gid;
82 static uid_t uid;
83 static mode_t mode;
84 static u_long flags;
85 
86 #ifdef __FreeBSD__
87 #define	FTS_CONST const
88 #else
89 #define	FTS_CONST
90 #endif
91 
92 static int	dcmp(const FTSENT *FTS_CONST *, const FTSENT *FTS_CONST *);
93 static void	output(int, int *, const char *, ...)
94 	__attribute__((__format__(__printf__, 3, 4)));
95 static int	statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
96 static void	statf(int, FTSENT *);
97 
98 void
99 cwalk(void)
100 {
101 	FTS *t;
102 	FTSENT *p;
103 	time_t clocktime;
104 	char host[MAXHOSTNAMELEN + 1];
105 	const char *user;
106 	char *argv[2];
107 	char  dot[] = ".";
108 	int indent = 0;
109 
110 	argv[0] = dot;
111 	argv[1] = NULL;
112 
113 	time(&clocktime);
114 	gethostname(host, sizeof(host));
115 	host[sizeof(host) - 1] = '\0';
116 	if ((user = getlogin()) == NULL) {
117 		struct passwd *pw;
118 		user = (pw = getpwuid(getuid())) == NULL ? pw->pw_name :
119 		    "<unknown>";
120 	}
121 
122 	if (!nflag)
123 		printf(
124 	    	    "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n"
125 		    "#\t   date: %s",
126 		    user, host, fullpath, ctime(&clocktime));
127 
128 	if ((t = fts_open(argv, ftsoptions, dcmp)) == NULL)
129 		mtree_err("fts_open: %s", strerror(errno));
130 	while ((p = fts_read(t)) != NULL) {
131 		if (jflag)
132 			indent = p->fts_level * 4;
133 		if (check_excludes(p->fts_name, p->fts_path)) {
134 			fts_set(t, p, FTS_SKIP);
135 			continue;
136 		}
137 		if (!find_only(p->fts_path)) {
138 			fts_set(t, p, FTS_SKIP);
139 			continue;
140 		}
141 		switch(p->fts_info) {
142 		case FTS_D:
143 			if (!bflag)
144 				printf("\n");
145 			if (!nflag)
146 				printf("# %s\n", p->fts_path);
147 			statd(t, p, &uid, &gid, &mode, &flags);
148 			statf(indent, p);
149 			break;
150 		case FTS_DP:
151 			if (p->fts_level > 0)
152 				if (!nflag)
153 					printf("%*s# %s\n", indent, "",
154 					    p->fts_path);
155 			if (p->fts_level > 0 || flavor == F_FREEBSD9) {
156 				printf("%*s..\n", indent, "");
157 				if (!bflag)
158 					printf("\n");
159 			}
160 			break;
161 		case FTS_DNR:
162 		case FTS_ERR:
163 		case FTS_NS:
164 			mtree_err("%s: %s",
165 			    p->fts_path, strerror(p->fts_errno));
166 			break;
167 		default:
168 			if (!dflag)
169 				statf(indent, p);
170 			break;
171 
172 		}
173 	}
174 	fts_close(t);
175 	if (sflag && keys & F_CKSUM)
176 		mtree_err("%s checksum: %u", fullpath, crc_total);
177 }
178 
179 static void
180 statf(int indent, FTSENT *p)
181 {
182 	u_int32_t len, val;
183 	int fd, offset;
184 	const char *name = NULL;
185 #if !defined(NO_MD5) || !defined(NO_RMD160) || !defined(NO_SHA1) || !defined(NO_SHA2)
186 	char *digestbuf;
187 #endif
188 
189 	offset = printf("%*s%s%s", indent, "",
190 	    S_ISDIR(p->fts_statp->st_mode) ? "" : "    ", vispath(p->fts_name));
191 
192 	if (offset > (INDENTNAMELEN + indent))
193 		offset = MAXLINELEN;
194 	else
195 		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
196 
197 	if (!S_ISREG(p->fts_statp->st_mode) && (flavor == F_NETBSD6 || !dflag))
198 		output(indent, &offset, "type=%s",
199 		    inotype(p->fts_statp->st_mode));
200 	if (keys & (F_UID | F_UNAME) && p->fts_statp->st_uid != uid) {
201 		if (keys & F_UNAME &&
202 		    (name = user_from_uid(p->fts_statp->st_uid, 1)) != NULL)
203 			output(indent, &offset, "uname=%s", name);
204 		if (keys & F_UID || (keys & F_UNAME && name == NULL))
205 			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
206 	}
207 	if (keys & (F_GID | F_GNAME) && p->fts_statp->st_gid != gid) {
208 		if (keys & F_GNAME &&
209 		    (name = group_from_gid(p->fts_statp->st_gid, 1)) != NULL)
210 			output(indent, &offset, "gname=%s", name);
211 		if (keys & F_GID || (keys & F_GNAME && name == NULL))
212 			output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
213 	}
214 	if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
215 		output(indent, &offset, "mode=%#o",
216 		    p->fts_statp->st_mode & MBITS);
217 	if (keys & F_DEV &&
218 	    (S_ISBLK(p->fts_statp->st_mode) || S_ISCHR(p->fts_statp->st_mode)))
219 		output(indent, &offset, "device=%#llx",
220 		    (long long)p->fts_statp->st_rdev);
221 	if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
222 		output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
223 	if (keys & F_SIZE &&
224 	    (flavor != F_NETBSD6 || S_ISREG(p->fts_statp->st_mode)))
225 		output(indent, &offset, "size=%lld",
226 		    (long long)p->fts_statp->st_size);
227 	if (keys & F_TIME)
228 #if defined(BSD4_4) && !defined(HAVE_NBTOOL_CONFIG_H)
229 		output(indent, &offset, "time=%ld.%09ld",
230 		    (long)p->fts_statp->st_mtimespec.tv_sec,
231 		    p->fts_statp->st_mtimespec.tv_nsec);
232 #else
233 		output(indent, &offset, "time=%ld.%09ld",
234 		    (long)p->fts_statp->st_mtime, (long)0);
235 #endif
236 	if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
237 		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
238 		    crc(fd, &val, &len))
239 			mtree_err("%s: %s", p->fts_accpath, strerror(errno));
240 		close(fd);
241 		output(indent, &offset, "cksum=%lu", (long)val);
242 	}
243 #ifndef NO_MD5
244 	if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
245 		if ((digestbuf = MD5File(p->fts_accpath, NULL)) == NULL)
246 			mtree_err("%s: MD5File failed: %s", p->fts_accpath,
247 			    strerror(errno));
248 		output(indent, &offset, "%s=%s", MD5KEY, digestbuf);
249 		free(digestbuf);
250 	}
251 #endif	/* ! NO_MD5 */
252 #ifndef NO_RMD160
253 	if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
254 		if ((digestbuf = RMD160File(p->fts_accpath, NULL)) == NULL)
255 			mtree_err("%s: RMD160File failed: %s", p->fts_accpath,
256 			    strerror(errno));
257 		output(indent, &offset, "%s=%s", RMD160KEY, digestbuf);
258 		free(digestbuf);
259 	}
260 #endif	/* ! NO_RMD160 */
261 #ifndef NO_SHA1
262 	if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
263 		if ((digestbuf = SHA1File(p->fts_accpath, NULL)) == NULL)
264 			mtree_err("%s: SHA1File failed: %s", p->fts_accpath,
265 			    strerror(errno));
266 		output(indent, &offset, "%s=%s", SHA1KEY, digestbuf);
267 		free(digestbuf);
268 	}
269 #endif	/* ! NO_SHA1 */
270 #ifndef NO_SHA2
271 	if (keys & F_SHA256 && S_ISREG(p->fts_statp->st_mode)) {
272 		if ((digestbuf = SHA256_File(p->fts_accpath, NULL)) == NULL)
273 			mtree_err("%s: SHA256_File failed: %s", p->fts_accpath,
274 			    strerror(errno));
275 		output(indent, &offset, "%s=%s", SHA256KEY, digestbuf);
276 		free(digestbuf);
277 	}
278 #ifdef SHA384_BLOCK_LENGTH
279 	if (keys & F_SHA384 && S_ISREG(p->fts_statp->st_mode)) {
280 		if ((digestbuf = SHA384_File(p->fts_accpath, NULL)) == NULL)
281 			mtree_err("%s: SHA384_File failed: %s", p->fts_accpath,
282 			    strerror(errno));
283 		output(indent, &offset, "%s=%s", SHA384KEY, digestbuf);
284 		free(digestbuf);
285 	}
286 #endif
287 	if (keys & F_SHA512 && S_ISREG(p->fts_statp->st_mode)) {
288 		if ((digestbuf = SHA512_File(p->fts_accpath, NULL)) == NULL)
289 			mtree_err("%s: SHA512_File failed: %s", p->fts_accpath,
290 			    strerror(errno));
291 		output(indent, &offset, "%s=%s", SHA512KEY, digestbuf);
292 		free(digestbuf);
293 	}
294 #endif	/* ! NO_SHA2 */
295 	if (keys & F_SLINK &&
296 	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
297 		output(indent, &offset, "link=%s",
298 		    vispath(rlink(p->fts_accpath)));
299 #if HAVE_STRUCT_STAT_ST_FLAGS
300 	if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
301 		char *str = flags_to_string(p->fts_statp->st_flags, "none");
302 		output(indent, &offset, "flags=%s", str);
303 		free(str);
304 	}
305 #endif
306 	putchar('\n');
307 }
308 
309 /* XXX
310  * FLAGS2INDEX will fail once the user and system settable bits need more
311  * than one byte, respectively.
312  */
313 #define FLAGS2INDEX(x)  (((x >> 8) & 0x0000ff00) | (x & 0x000000ff))
314 
315 #define	MTREE_MAXGID	5000
316 #define	MTREE_MAXUID	5000
317 #define	MTREE_MAXMODE	(MBITS + 1)
318 #if HAVE_STRUCT_STAT_ST_FLAGS
319 #define	MTREE_MAXFLAGS  (FLAGS2INDEX(CH_MASK) + 1)   /* 1808 */
320 #else
321 #define MTREE_MAXFLAGS	1
322 #endif
323 #define	MTREE_MAXS 16
324 
325 static int
326 statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode,
327       u_long *pflags)
328 {
329 	FTSENT *p;
330 	gid_t sgid;
331 	uid_t suid;
332 	mode_t smode;
333 	u_long sflags = 0;
334 	const char *name = NULL;
335 	gid_t savegid;
336 	uid_t saveuid;
337 	mode_t savemode;
338 	u_long saveflags;
339 	u_short maxgid, maxuid, maxmode, maxflags;
340 	u_short g[MTREE_MAXGID], u[MTREE_MAXUID],
341 		m[MTREE_MAXMODE], f[MTREE_MAXFLAGS];
342 	static int first = 1;
343 
344 	savegid = *pgid;
345 	saveuid = *puid;
346 	savemode = *pmode;
347 	saveflags = *pflags;
348 	if ((p = fts_children(t, 0)) == NULL) {
349 		if (errno)
350 			mtree_err("%s: %s", RP(parent), strerror(errno));
351 		return (1);
352 	}
353 
354 	memset(g, 0, sizeof(g));
355 	memset(u, 0, sizeof(u));
356 	memset(m, 0, sizeof(m));
357 	memset(f, 0, sizeof(f));
358 
359 	maxuid = maxgid = maxmode = maxflags = 0;
360 	for (; p; p = p->fts_link) {
361 		if (flavor == F_NETBSD6 || !dflag ||
362 		    (dflag && S_ISDIR(p->fts_statp->st_mode))) {
363 			smode = p->fts_statp->st_mode & MBITS;
364 			if (smode < MTREE_MAXMODE && ++m[smode] > maxmode) {
365 				savemode = smode;
366 				maxmode = m[smode];
367 			}
368 			sgid = p->fts_statp->st_gid;
369 			if (sgid < MTREE_MAXGID && ++g[sgid] > maxgid) {
370 				savegid = sgid;
371 				maxgid = g[sgid];
372 			}
373 			suid = p->fts_statp->st_uid;
374 			if (suid < MTREE_MAXUID && ++u[suid] > maxuid) {
375 				saveuid = suid;
376 				maxuid = u[suid];
377 			}
378 
379 #if HAVE_STRUCT_STAT_ST_FLAGS
380 			sflags = FLAGS2INDEX(p->fts_statp->st_flags);
381 			if (sflags < MTREE_MAXFLAGS && ++f[sflags] > maxflags) {
382 				saveflags = p->fts_statp->st_flags;
383 				maxflags = f[sflags];
384 			}
385 #endif
386 		}
387 	}
388 	/*
389 	 * If the /set record is the same as the last one we do not need to
390 	 * output a new one.  So first we check to see if anything changed.
391 	 * Note that we always output a /set record for the first directory.
392 	 */
393 	if (((keys & (F_UNAME | F_UID)) && (*puid != saveuid)) ||
394 	    ((keys & (F_GNAME | F_GID)) && (*pgid != savegid)) ||
395 	    ((keys & F_MODE) && (*pmode != savemode)) ||
396 	    ((keys & F_FLAGS) && (*pflags != saveflags)) ||
397 	    first) {
398 		first = 0;
399 		if (flavor != F_NETBSD6 && dflag)
400 			printf("/set type=dir");
401 		else
402 			printf("/set type=file");
403 		if (keys & (F_UID | F_UNAME)) {
404 			if (keys & F_UNAME &&
405 			    (name = user_from_uid(saveuid, 1)) != NULL)
406 				printf(" uname=%s", name);
407 			if (keys & F_UID || (keys & F_UNAME && name == NULL))
408 				printf(" uid=%lu", (u_long)saveuid);
409 		}
410 		if (keys & (F_GID | F_GNAME)) {
411 			if (keys & F_GNAME &&
412 			    (name = group_from_gid(savegid, 1)) != NULL)
413 				printf(" gname=%s", name);
414 			if (keys & F_GID || (keys & F_GNAME && name == NULL))
415 				printf(" gid=%lu", (u_long)savegid);
416 		}
417 		if (keys & F_MODE)
418 			printf(" mode=%#lo", (u_long)savemode);
419 		if (keys & F_NLINK)
420 			printf(" nlink=1");
421 		if (keys & F_FLAGS) {
422 			char *str = flags_to_string(saveflags, "none");
423 			printf(" flags=%s", str);
424 			free(str);
425 		}
426 		printf("\n");
427 		*puid = saveuid;
428 		*pgid = savegid;
429 		*pmode = savemode;
430 		*pflags = saveflags;
431 	}
432 	return (0);
433 }
434 
435 /*
436  * dcmp --
437  *	used as a comparison function passed to fts_open() to control
438  *	the order in which fts_read() returns results.	We make
439  *	directories sort after non-directories, but otherwise sort in
440  *	strcmp() order.
441  *
442  * Keep this in sync with nodecmp() in spec.c.
443  */
444 static int
445 dcmp(const FTSENT *FTS_CONST *a, const FTSENT *FTS_CONST *b)
446 {
447 
448 	if (S_ISDIR((*a)->fts_statp->st_mode)) {
449 		if (!S_ISDIR((*b)->fts_statp->st_mode))
450 			return (1);
451 	} else if (S_ISDIR((*b)->fts_statp->st_mode))
452 		return (-1);
453 	return (strcmp((*a)->fts_name, (*b)->fts_name));
454 }
455 
456 void
457 output(int indent, int *offset, const char *fmt, ...)
458 {
459 	va_list ap;
460 	char buf[1024];
461 
462 	va_start(ap, fmt);
463 	vsnprintf(buf, sizeof(buf), fmt, ap);
464 	va_end(ap);
465 
466 	if (*offset + strlen(buf) > MAXLINELEN - 3) {
467 		printf(" \\\n%*s", INDENTNAMELEN + indent, "");
468 		*offset = INDENTNAMELEN + indent;
469 	}
470 	*offset += printf(" %s", buf) + 1;
471 }
472