xref: /freebsd/contrib/mtree/create.c (revision 955c8cbb4960e6cf3602de144b1b9154a5092968) 
1 /*	$NetBSD: create.c,v 1.68 2012/12/20 16:43:16 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 1.68 2012/12/20 16:43:16 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 		switch(p->fts_info) {
138 		case FTS_D:
139 			if (!bflag)
140 				printf("\n");
141 			if (!nflag)
142 				printf("# %s\n", p->fts_path);
143 			statd(t, p, &uid, &gid, &mode, &flags);
144 			statf(indent, p);
145 			break;
146 		case FTS_DP:
147 			if (p->fts_level > 0)
148 				if (!nflag)
149 					printf("%*s# %s\n", indent, "",
150 					    p->fts_path);
151 			if (p->fts_level > 0 || flavor == F_FREEBSD9) {
152 				printf("%*s..\n", indent, "");
153 				if (!bflag)
154 					printf("\n");
155 			}
156 			break;
157 		case FTS_DNR:
158 		case FTS_ERR:
159 		case FTS_NS:
160 			mtree_err("%s: %s",
161 			    p->fts_path, strerror(p->fts_errno));
162 			break;
163 		default:
164 			if (!dflag)
165 				statf(indent, p);
166 			break;
167 
168 		}
169 	}
170 	fts_close(t);
171 	if (sflag && keys & F_CKSUM)
172 		mtree_err("%s checksum: %u", fullpath, crc_total);
173 }
174 
175 static void
176 statf(int indent, FTSENT *p)
177 {
178 	u_int32_t len, val;
179 	int fd, offset;
180 	const char *name = NULL;
181 #if !defined(NO_MD5) || !defined(NO_RMD160) || !defined(NO_SHA1) || !defined(NO_SHA2)
182 	char *digestbuf;
183 #endif
184 
185 	offset = printf("%*s%s%s", indent, "",
186 	    S_ISDIR(p->fts_statp->st_mode) ? "" : "    ", vispath(p->fts_name));
187 
188 	if (offset > (INDENTNAMELEN + indent))
189 		offset = MAXLINELEN;
190 	else
191 		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
192 
193 	if (!S_ISREG(p->fts_statp->st_mode) && (flavor == F_NETBSD6 || !dflag))
194 		output(indent, &offset, "type=%s",
195 		    inotype(p->fts_statp->st_mode));
196 	if (keys & (F_UID | F_UNAME) && p->fts_statp->st_uid != uid) {
197 		if (keys & F_UNAME &&
198 		    (name = user_from_uid(p->fts_statp->st_uid, 1)) != NULL)
199 			output(indent, &offset, "uname=%s", name);
200 		if (keys & F_UID || (keys & F_UNAME && name == NULL))
201 			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
202 	}
203 	if (keys & (F_GID | F_GNAME) && p->fts_statp->st_gid != gid) {
204 		if (keys & F_GNAME &&
205 		    (name = group_from_gid(p->fts_statp->st_gid, 1)) != NULL)
206 			output(indent, &offset, "gname=%s", name);
207 		if (keys & F_GID || (keys & F_GNAME && name == NULL))
208 			output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
209 	}
210 	if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
211 		output(indent, &offset, "mode=%#o",
212 		    p->fts_statp->st_mode & MBITS);
213 	if (keys & F_DEV &&
214 	    (S_ISBLK(p->fts_statp->st_mode) || S_ISCHR(p->fts_statp->st_mode)))
215 		output(indent, &offset, "device=%#llx",
216 		    (long long)p->fts_statp->st_rdev);
217 	if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
218 		output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
219 	if (keys & F_SIZE &&
220 	    (flavor != F_NETBSD6 || S_ISREG(p->fts_statp->st_mode)))
221 		output(indent, &offset, "size=%lld",
222 		    (long long)p->fts_statp->st_size);
223 	if (keys & F_TIME)
224 #if defined(BSD4_4) && !defined(HAVE_NBTOOL_CONFIG_H)
225 		output(indent, &offset, "time=%ld.%09ld",
226 		    (long)p->fts_statp->st_mtimespec.tv_sec,
227 		    p->fts_statp->st_mtimespec.tv_nsec);
228 #else
229 		output(indent, &offset, "time=%ld.%09ld",
230 		    (long)p->fts_statp->st_mtime, (long)0);
231 #endif
232 	if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
233 		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
234 		    crc(fd, &val, &len))
235 			mtree_err("%s: %s", p->fts_accpath, strerror(errno));
236 		close(fd);
237 		output(indent, &offset, "cksum=%lu", (long)val);
238 	}
239 #ifndef NO_MD5
240 	if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
241 		if ((digestbuf = MD5File(p->fts_accpath, NULL)) == NULL)
242 			mtree_err("%s: MD5File failed: %s", p->fts_accpath,
243 			    strerror(errno));
244 		output(indent, &offset, "%s=%s", MD5KEY, digestbuf);
245 		free(digestbuf);
246 	}
247 #endif	/* ! NO_MD5 */
248 #ifndef NO_RMD160
249 	if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
250 		if ((digestbuf = RMD160File(p->fts_accpath, NULL)) == NULL)
251 			mtree_err("%s: RMD160File failed: %s", p->fts_accpath,
252 			    strerror(errno));
253 		output(indent, &offset, "%s=%s", RMD160KEY, digestbuf);
254 		free(digestbuf);
255 	}
256 #endif	/* ! NO_RMD160 */
257 #ifndef NO_SHA1
258 	if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
259 		if ((digestbuf = SHA1File(p->fts_accpath, NULL)) == NULL)
260 			mtree_err("%s: SHA1File failed: %s", p->fts_accpath,
261 			    strerror(errno));
262 		output(indent, &offset, "%s=%s", SHA1KEY, digestbuf);
263 		free(digestbuf);
264 	}
265 #endif	/* ! NO_SHA1 */
266 #ifndef NO_SHA2
267 	if (keys & F_SHA256 && S_ISREG(p->fts_statp->st_mode)) {
268 		if ((digestbuf = SHA256_File(p->fts_accpath, NULL)) == NULL)
269 			mtree_err("%s: SHA256_File failed: %s", p->fts_accpath,
270 			    strerror(errno));
271 		output(indent, &offset, "%s=%s", SHA256KEY, digestbuf);
272 		free(digestbuf);
273 	}
274 #ifdef SHA384_BLOCK_LENGTH
275 	if (keys & F_SHA384 && S_ISREG(p->fts_statp->st_mode)) {
276 		if ((digestbuf = SHA384_File(p->fts_accpath, NULL)) == NULL)
277 			mtree_err("%s: SHA384_File failed: %s", p->fts_accpath,
278 			    strerror(errno));
279 		output(indent, &offset, "%s=%s", SHA384KEY, digestbuf);
280 		free(digestbuf);
281 	}
282 #endif
283 	if (keys & F_SHA512 && S_ISREG(p->fts_statp->st_mode)) {
284 		if ((digestbuf = SHA512_File(p->fts_accpath, NULL)) == NULL)
285 			mtree_err("%s: SHA512_File failed: %s", p->fts_accpath,
286 			    strerror(errno));
287 		output(indent, &offset, "%s=%s", SHA512KEY, digestbuf);
288 		free(digestbuf);
289 	}
290 #endif	/* ! NO_SHA2 */
291 	if (keys & F_SLINK &&
292 	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
293 		output(indent, &offset, "link=%s",
294 		    vispath(rlink(p->fts_accpath)));
295 #if HAVE_STRUCT_STAT_ST_FLAGS
296 	if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
297 		char *str = flags_to_string(p->fts_statp->st_flags, "none");
298 		output(indent, &offset, "flags=%s", str);
299 		free(str);
300 	}
301 #endif
302 	putchar('\n');
303 }
304 
305 /* XXX
306  * FLAGS2INDEX will fail once the user and system settable bits need more
307  * than one byte, respectively.
308  */
309 #define FLAGS2INDEX(x)  (((x >> 8) & 0x0000ff00) | (x & 0x000000ff))
310 
311 #define	MTREE_MAXGID	5000
312 #define	MTREE_MAXUID	5000
313 #define	MTREE_MAXMODE	(MBITS + 1)
314 #if HAVE_STRUCT_STAT_ST_FLAGS
315 #define	MTREE_MAXFLAGS  (FLAGS2INDEX(CH_MASK) + 1)   /* 1808 */
316 #else
317 #define MTREE_MAXFLAGS	1
318 #endif
319 #define	MTREE_MAXS 16
320 
321 static int
322 statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode,
323       u_long *pflags)
324 {
325 	FTSENT *p;
326 	gid_t sgid;
327 	uid_t suid;
328 	mode_t smode;
329 	u_long sflags = 0;
330 	const char *name = NULL;
331 	gid_t savegid;
332 	uid_t saveuid;
333 	mode_t savemode;
334 	u_long saveflags;
335 	u_short maxgid, maxuid, maxmode, maxflags;
336 	u_short g[MTREE_MAXGID], u[MTREE_MAXUID],
337 		m[MTREE_MAXMODE], f[MTREE_MAXFLAGS];
338 	static int first = 1;
339 
340 	savegid = *pgid;
341 	saveuid = *puid;
342 	savemode = *pmode;
343 	saveflags = *pflags;
344 	if ((p = fts_children(t, 0)) == NULL) {
345 		if (errno)
346 			mtree_err("%s: %s", RP(parent), strerror(errno));
347 		return (1);
348 	}
349 
350 	memset(g, 0, sizeof(g));
351 	memset(u, 0, sizeof(u));
352 	memset(m, 0, sizeof(m));
353 	memset(f, 0, sizeof(f));
354 
355 	maxuid = maxgid = maxmode = maxflags = 0;
356 	for (; p; p = p->fts_link) {
357 		if (flavor == F_NETBSD6 || !dflag ||
358 		    (dflag && S_ISDIR(p->fts_statp->st_mode))) {
359 			smode = p->fts_statp->st_mode & MBITS;
360 			if (smode < MTREE_MAXMODE && ++m[smode] > maxmode) {
361 				savemode = smode;
362 				maxmode = m[smode];
363 			}
364 			sgid = p->fts_statp->st_gid;
365 			if (sgid < MTREE_MAXGID && ++g[sgid] > maxgid) {
366 				savegid = sgid;
367 				maxgid = g[sgid];
368 			}
369 			suid = p->fts_statp->st_uid;
370 			if (suid < MTREE_MAXUID && ++u[suid] > maxuid) {
371 				saveuid = suid;
372 				maxuid = u[suid];
373 			}
374 
375 #if HAVE_STRUCT_STAT_ST_FLAGS
376 			sflags = FLAGS2INDEX(p->fts_statp->st_flags);
377 			if (sflags < MTREE_MAXFLAGS && ++f[sflags] > maxflags) {
378 				saveflags = p->fts_statp->st_flags;
379 				maxflags = f[sflags];
380 			}
381 #endif
382 		}
383 	}
384 	/*
385 	 * If the /set record is the same as the last one we do not need to
386 	 * output a new one.  So first we check to see if anything changed.
387 	 * Note that we always output a /set record for the first directory.
388 	 */
389 	if (((keys & (F_UNAME | F_UID)) && (*puid != saveuid)) ||
390 	    ((keys & (F_GNAME | F_GID)) && (*pgid != savegid)) ||
391 	    ((keys & F_MODE) && (*pmode != savemode)) ||
392 	    ((keys & F_FLAGS) && (*pflags != saveflags)) ||
393 	    first) {
394 		first = 0;
395 		if (flavor != F_NETBSD6 && dflag)
396 			printf("/set type=dir");
397 		else
398 			printf("/set type=file");
399 		if (keys & (F_UID | F_UNAME)) {
400 			if (keys & F_UNAME &&
401 			    (name = user_from_uid(saveuid, 1)) != NULL)
402 				printf(" uname=%s", name);
403 			if (keys & F_UID || (keys & F_UNAME && name == NULL))
404 				printf(" uid=%lu", (u_long)saveuid);
405 		}
406 		if (keys & (F_GID | F_GNAME)) {
407 			if (keys & F_GNAME &&
408 			    (name = group_from_gid(savegid, 1)) != NULL)
409 				printf(" gname=%s", name);
410 			if (keys & F_GID || (keys & F_GNAME && name == NULL))
411 				printf(" gid=%lu", (u_long)savegid);
412 		}
413 		if (keys & F_MODE)
414 			printf(" mode=%#lo", (u_long)savemode);
415 		if (keys & F_NLINK)
416 			printf(" nlink=1");
417 		if (keys & F_FLAGS) {
418 			char *str = flags_to_string(saveflags, "none");
419 			printf(" flags=%s", str);
420 			free(str);
421 		}
422 		printf("\n");
423 		*puid = saveuid;
424 		*pgid = savegid;
425 		*pmode = savemode;
426 		*pflags = saveflags;
427 	}
428 	return (0);
429 }
430 
431 /*
432  * dcmp --
433  *	used as a comparison function passed to fts_open() to control
434  *	the order in which fts_read() returns results.	We make
435  *	directories sort after non-directories, but otherwise sort in
436  *	strcmp() order.
437  *
438  * Keep this in sync with nodecmp() in spec.c.
439  */
440 static int
441 dcmp(const FTSENT *FTS_CONST *a, const FTSENT *FTS_CONST *b)
442 {
443 
444 	if (S_ISDIR((*a)->fts_statp->st_mode)) {
445 		if (!S_ISDIR((*b)->fts_statp->st_mode))
446 			return (1);
447 	} else if (S_ISDIR((*b)->fts_statp->st_mode))
448 		return (-1);
449 	return (strcmp((*a)->fts_name, (*b)->fts_name));
450 }
451 
452 void
453 output(int indent, int *offset, const char *fmt, ...)
454 {
455 	va_list ap;
456 	char buf[1024];
457 
458 	va_start(ap, fmt);
459 	vsnprintf(buf, sizeof(buf), fmt, ap);
460 	va_end(ap);
461 
462 	if (*offset + strlen(buf) > MAXLINELEN - 3) {
463 		printf(" \\\n%*s", INDENTNAMELEN + indent, "");
464 		*offset = INDENTNAMELEN + indent;
465 	}
466 	*offset += printf(" %s", buf) + 1;
467 }
468