create.c revision 121299 
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. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#if 0
35#ifndef lint
36static char sccsid[] = "@(#)create.c	8.1 (Berkeley) 6/6/93";
37#endif /* not lint */
38#endif
39#include <sys/cdefs.h>
40__FBSDID("$FreeBSD: head/usr.sbin/mtree/create.c 121299 2003-10-21 07:58:52Z phk $");
41
42#include <sys/param.h>
43#include <sys/stat.h>
44#include <dirent.h>
45#include <err.h>
46#include <errno.h>
47#include <fcntl.h>
48#include <fts.h>
49#include <grp.h>
50#ifdef MD5
51#include <md5.h>
52#endif
53#ifdef SHA1
54#include <sha.h>
55#endif
56#ifdef RMD160
57#include <ripemd.h>
58#endif
59#include <pwd.h>
60#include <stdint.h>
61#include <stdio.h>
62#include <time.h>
63#include <unistd.h>
64#include <vis.h>
65#include "mtree.h"
66#include "extern.h"
67
68#define	INDENTNAMELEN	15
69#define	MAXLINELEN	80
70
71extern int ftsoptions;
72extern int dflag, iflag, nflag, sflag;
73extern u_int keys;
74extern char fullpath[MAXPATHLEN];
75extern int lineno;
76
77static gid_t gid;
78static uid_t uid;
79static mode_t mode;
80static u_long flags = 0xffffffff;
81
82static int	dsort(const FTSENT * const *, const FTSENT * const *);
83static void	output(int, int *, const char *, ...) __printflike(3, 4);
84static int	statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
85static void	statf(int, FTSENT *);
86
87void
88cwalk(void)
89{
90	FTS *t;
91	FTSENT *p;
92	time_t cl;
93	char *argv[2], host[MAXHOSTNAMELEN];
94	char dot[] = ".";
95	int indent = 0;
96
97	(void)time(&cl);
98	(void)gethostname(host, sizeof(host));
99	(void)printf(
100	    "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n#\t   date: %s",
101	    getlogin(), host, fullpath, ctime(&cl));
102
103	argv[0] = dot;
104	argv[1] = NULL;
105	if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
106		err(1, "line %d: fts_open", lineno);
107	while ((p = fts_read(t))) {
108		if (iflag)
109			indent = p->fts_level * 4;
110		if (check_excludes(p->fts_name, p->fts_path)) {
111			fts_set(t, p, FTS_SKIP);
112			continue;
113		}
114		switch(p->fts_info) {
115		case FTS_D:
116			if (!dflag)
117				(void)printf("\n");
118			if (!nflag)
119				(void)printf("# %s\n", p->fts_path);
120			statd(t, p, &uid, &gid, &mode, &flags);
121			statf(indent, p);
122			break;
123		case FTS_DP:
124			if (!nflag && (p->fts_level > 0))
125				(void)printf("%*s# %s\n", indent, "", p->fts_path);
126			(void)printf("%*s..\n", indent, "");
127			if (!dflag)
128				(void)printf("\n");
129			break;
130		case FTS_DNR:
131		case FTS_ERR:
132		case FTS_NS:
133			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
134			break;
135		default:
136			if (!dflag)
137				statf(indent, p);
138			break;
139
140		}
141	}
142	(void)fts_close(t);
143	if (sflag && keys & F_CKSUM)
144		warnx("%s checksum: %lu", fullpath, (unsigned long)crc_total);
145}
146
147static void
148statf(int indent, FTSENT *p)
149{
150	struct group *gr;
151	struct passwd *pw;
152	uint32_t val;
153	off_t len;
154	int fd, offset;
155	char *fflags;
156	char *escaped_name;
157
158	escaped_name = calloc(1, p->fts_namelen * 4  +  1);
159	if (escaped_name == NULL)
160		errx(1, "statf(): calloc() failed");
161	strvis(escaped_name, p->fts_name, VIS_WHITE | VIS_OCTAL);
162
163	if (iflag || S_ISDIR(p->fts_statp->st_mode))
164		offset = printf("%*s%s", indent, "", escaped_name);
165	else
166		offset = printf("%*s    %s", indent, "", escaped_name);
167
168	free(escaped_name);
169
170	if (offset > (INDENTNAMELEN + indent))
171		offset = MAXLINELEN;
172	else
173		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
174
175	if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
176		output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
177	if (p->fts_statp->st_uid != uid) {
178		if (keys & F_UNAME) {
179			if ((pw = getpwuid(p->fts_statp->st_uid)) != NULL) {
180				output(indent, &offset, "uname=%s", pw->pw_name);
181			} else {
182				errx(1,
183				"line %d: could not get uname for uid=%u",
184				lineno, p->fts_statp->st_uid);
185			}
186		}
187		if (keys & F_UID)
188			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
189	}
190	if (p->fts_statp->st_gid != gid) {
191		if (keys & F_GNAME) {
192			if ((gr = getgrgid(p->fts_statp->st_gid)) != NULL) {
193				output(indent, &offset, "gname=%s", gr->gr_name);
194			} else {
195				errx(1,
196				"line %d: could not get gname for gid=%u",
197				lineno, p->fts_statp->st_gid);
198			}
199		}
200		if (keys & F_GID)
201			output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
202	}
203	if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
204		output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
205	if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
206		output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
207	if (keys & F_SIZE)
208		output(indent, &offset, "size=%jd",
209		    (intmax_t)p->fts_statp->st_size);
210	if (keys & F_TIME)
211		output(indent, &offset, "time=%ld.%ld",
212		    (long)p->fts_statp->st_mtimespec.tv_sec,
213		    p->fts_statp->st_mtimespec.tv_nsec);
214	if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
215		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
216		    crc(fd, &val, &len))
217			err(1, "line %d: %s", lineno, p->fts_accpath);
218		(void)close(fd);
219		output(indent, &offset, "cksum=%lu", (unsigned long)val);
220	}
221#ifdef MD5
222	if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
223		char *digest, buf[33];
224
225		digest = MD5File(p->fts_accpath, buf);
226		if (!digest) {
227			err(1, "line %d: %s", lineno, p->fts_accpath);
228		} else {
229			output(indent, &offset, "md5digest=%s", digest);
230		}
231	}
232#endif /* MD5 */
233#ifdef SHA1
234	if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
235		char *digest, buf[41];
236
237		digest = SHA1_File(p->fts_accpath, buf);
238		if (!digest) {
239			err(1, "line %d: %s", lineno, p->fts_accpath);
240		} else {
241			output(indent, &offset, "sha1digest=%s", digest);
242		}
243	}
244#endif /* SHA1 */
245#ifdef RMD160
246	if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
247		char *digest, buf[41];
248
249		digest = RIPEMD160_File(p->fts_accpath, buf);
250		if (!digest) {
251			err(1, "line %d: %s", lineno, p->fts_accpath);
252		} else {
253			output(indent, &offset, "ripemd160digest=%s", digest);
254		}
255	}
256#endif /* RMD160 */
257	if (keys & F_SLINK &&
258	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
259		output(indent, &offset, "link=%s", rlink(p->fts_accpath));
260	if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
261		fflags = flags_to_string(p->fts_statp->st_flags);
262		output(indent, &offset, "flags=%s", fflags);
263		free(fflags);
264	}
265	(void)putchar('\n');
266}
267
268#define	MAXGID	5000
269#define	MAXUID	5000
270#define	MAXMODE	MBITS + 1
271#define	MAXFLAGS 256
272#define	MAXS 16
273
274static int
275statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode, u_long *pflags)
276{
277	FTSENT *p;
278	gid_t sgid;
279	uid_t suid;
280	mode_t smode;
281	u_long sflags;
282	struct group *gr;
283	struct passwd *pw;
284	gid_t savegid = *pgid;
285	uid_t saveuid = *puid;
286	mode_t savemode = *pmode;
287	u_long saveflags = *pflags;
288	u_short maxgid, maxuid, maxmode, maxflags;
289	u_short g[MAXGID], u[MAXUID], m[MAXMODE], f[MAXFLAGS];
290	char *fflags;
291	static int first = 1;
292
293	if ((p = fts_children(t, 0)) == NULL) {
294		if (errno)
295			err(1, "line %d: %s", lineno, RP(parent));
296		return (1);
297	}
298
299	bzero(g, sizeof(g));
300	bzero(u, sizeof(u));
301	bzero(m, sizeof(m));
302	bzero(f, sizeof(f));
303
304	maxuid = maxgid = maxmode = maxflags = 0;
305	for (; p; p = p->fts_link) {
306		if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
307			smode = p->fts_statp->st_mode & MBITS;
308			if (smode < MAXMODE && ++m[smode] > maxmode) {
309				savemode = smode;
310				maxmode = m[smode];
311			}
312			sgid = p->fts_statp->st_gid;
313			if (sgid < MAXGID && ++g[sgid] > maxgid) {
314				savegid = sgid;
315				maxgid = g[sgid];
316			}
317			suid = p->fts_statp->st_uid;
318			if (suid < MAXUID && ++u[suid] > maxuid) {
319				saveuid = suid;
320				maxuid = u[suid];
321			}
322
323			/*
324			 * XXX
325			 * note that the below will break when file flags
326			 * are extended beyond the first 4 bytes of each
327			 * half word of the flags
328			 */
329#define FLAGS2IDX(f) ((f & 0xf) | ((f >> 12) & 0xf0))
330			sflags = p->fts_statp->st_flags;
331			if (FLAGS2IDX(sflags) < MAXFLAGS &&
332			    ++f[FLAGS2IDX(sflags)] > maxflags) {
333				saveflags = sflags;
334				maxflags = f[FLAGS2IDX(sflags)];
335			}
336		}
337	}
338	/*
339	 * If the /set record is the same as the last one we do not need to output
340	 * a new one.  So first we check to see if anything changed.  Note that we
341	 * always output a /set record for the first directory.
342	 */
343	if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
344	    (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
345	    ((keys & F_MODE) && (*pmode != savemode)) ||
346	    ((keys & F_FLAGS) && (*pflags != saveflags)) ||
347	    (first)) {
348		first = 0;
349		if (dflag)
350			(void)printf("/set type=dir");
351		else
352			(void)printf("/set type=file");
353		if (keys & F_UNAME) {
354			if ((pw = getpwuid(saveuid)) != NULL)
355				(void)printf(" uname=%s", pw->pw_name);
356			else
357				errx(1,
358				"line %d: could not get uname for uid=%u",
359				lineno, saveuid);
360		}
361		if (keys & F_UID)
362			(void)printf(" uid=%lu", (u_long)saveuid);
363		if (keys & F_GNAME) {
364			if ((gr = getgrgid(savegid)) != NULL)
365				(void)printf(" gname=%s", gr->gr_name);
366			else
367				errx(1,
368				"line %d: could not get gname for gid=%u",
369				lineno, savegid);
370		}
371		if (keys & F_GID)
372			(void)printf(" gid=%lu", (u_long)savegid);
373		if (keys & F_MODE)
374			(void)printf(" mode=%#o", savemode);
375		if (keys & F_NLINK)
376			(void)printf(" nlink=1");
377		if (keys & F_FLAGS) {
378			fflags = flags_to_string(saveflags);
379			(void)printf(" flags=%s", fflags);
380			free(fflags);
381		}
382		(void)printf("\n");
383		*puid = saveuid;
384		*pgid = savegid;
385		*pmode = savemode;
386		*pflags = saveflags;
387	}
388	return (0);
389}
390
391static int
392dsort(const FTSENT * const *a, const FTSENT * const *b)
393{
394	if (S_ISDIR((*a)->fts_statp->st_mode)) {
395		if (!S_ISDIR((*b)->fts_statp->st_mode))
396			return (1);
397	} else if (S_ISDIR((*b)->fts_statp->st_mode))
398		return (-1);
399	return (strcmp((*a)->fts_name, (*b)->fts_name));
400}
401
402#include <stdarg.h>
403
404void
405output(int indent, int *offset, const char *fmt, ...)
406{
407	va_list ap;
408	char buf[1024];
409	va_start(ap, fmt);
410	(void)vsnprintf(buf, sizeof(buf), fmt, ap);
411	va_end(ap);
412
413	if (*offset + strlen(buf) > MAXLINELEN - 3) {
414		(void)printf(" \\\n%*s", INDENTNAMELEN + indent, "");
415		*offset = INDENTNAMELEN + indent;
416	}
417	*offset += printf(" %s", buf) + 1;
418}
419