create.c revision 100070 
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#ifndef lint
35#if 0
36static char sccsid[] = "@(#)create.c	8.1 (Berkeley) 6/6/93";
37#endif
38static const char rcsid[] =
39  "$FreeBSD: head/usr.sbin/mtree/create.c 100070 2002-07-15 12:17:31Z des $";
40#endif /* not lint */
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 long int crc_total;
72extern int ftsoptions;
73extern int dflag, iflag, nflag, sflag;
74extern u_int keys;
75extern char fullpath[MAXPATHLEN];
76extern int lineno;
77
78static gid_t gid;
79static uid_t uid;
80static mode_t mode;
81static u_long flags = 0xffffffff;
82
83static int	dsort(const FTSENT **, const FTSENT **);
84static void	output(int, int *, const char *, ...) __printflike(3, 4);
85static int	statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
86static void	statf(int, FTSENT *);
87
88void
89cwalk()
90{
91	register FTS *t;
92	register FTSENT *p;
93	time_t cl;
94	char *argv[2], host[MAXHOSTNAMELEN];
95	char dot[] = ".";
96	int indent = 0;
97
98	(void)time(&cl);
99	(void)gethostname(host, sizeof(host));
100	(void)printf(
101	    "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n#\t   date: %s",
102	    getlogin(), host, fullpath, ctime(&cl));
103
104	argv[0] = dot;
105	argv[1] = NULL;
106	if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
107		err(1, "line %d: fts_open", lineno);
108	while ((p = fts_read(t))) {
109		if (iflag)
110			indent = p->fts_level * 4;
111		if (check_excludes(p->fts_name, p->fts_path)) {
112			fts_set(t, p, FTS_SKIP);
113			continue;
114		}
115		switch(p->fts_info) {
116		case FTS_D:
117			if (!dflag)
118				(void)printf("\n");
119			if (!nflag)
120				(void)printf("# %s\n", p->fts_path);
121			statd(t, p, &uid, &gid, &mode, &flags);
122			statf(indent, p);
123			break;
124		case FTS_DP:
125			if (!nflag && (p->fts_level > 0))
126				(void)printf("%*s# %s\n", indent, "", p->fts_path);
127			(void)printf("%*s..\n", indent, "");
128			if (!dflag)
129				(void)printf("\n");
130			break;
131		case FTS_DNR:
132		case FTS_ERR:
133		case FTS_NS:
134			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
135			break;
136		default:
137			if (!dflag)
138				statf(indent, p);
139			break;
140
141		}
142	}
143	(void)fts_close(t);
144	if (sflag && keys & F_CKSUM)
145		warnx("%s checksum: %lu", fullpath, crc_total);
146}
147
148static void
149statf(indent, p)
150	int indent;
151	FTSENT *p;
152{
153	struct group *gr;
154	struct passwd *pw;
155	u_long len, val;
156	int fd, offset;
157	char *fflags;
158	char *escaped_name;
159
160	escaped_name = calloc(1, p->fts_namelen * 4  +  1);
161	if (escaped_name == NULL)
162		errx(1, "statf(): calloc() failed");
163	strvis(escaped_name, p->fts_name, VIS_WHITE | VIS_OCTAL);
164
165	if (iflag || S_ISDIR(p->fts_statp->st_mode))
166		offset = printf("%*s%s", indent, "", escaped_name);
167	else
168		offset = printf("%*s    %s", indent, "", escaped_name);
169
170	free(escaped_name);
171
172	if (offset > (INDENTNAMELEN + indent))
173		offset = MAXLINELEN;
174	else
175		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
176
177	if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
178		output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
179	if (p->fts_statp->st_uid != uid) {
180		if (keys & F_UNAME) {
181			if ((pw = getpwuid(p->fts_statp->st_uid)) != NULL) {
182				output(indent, &offset, "uname=%s", pw->pw_name);
183			} else {
184				errx(1,
185				"line %d: could not get uname for uid=%u",
186				lineno, p->fts_statp->st_uid);
187			}
188		}
189		if (keys & F_UID)
190			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
191	}
192	if (p->fts_statp->st_gid != gid) {
193		if (keys & F_GNAME) {
194			if ((gr = getgrgid(p->fts_statp->st_gid)) != NULL) {
195				output(indent, &offset, "gname=%s", gr->gr_name);
196			} else {
197				errx(1,
198				"line %d: could not get gname for gid=%u",
199				lineno, p->fts_statp->st_gid);
200			}
201		}
202		if (keys & F_GID)
203			output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
204	}
205	if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
206		output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
207	if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
208		output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
209	if (keys & F_SIZE)
210		output(indent, &offset, "size=%jd",
211		    (intmax_t)p->fts_statp->st_size);
212	if (keys & F_TIME)
213		output(indent, &offset, "time=%ld.%ld",
214		    (long)p->fts_statp->st_mtimespec.tv_sec,
215		    p->fts_statp->st_mtimespec.tv_nsec);
216	if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
217		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
218		    crc(fd, &val, &len))
219			err(1, "line %d: %s", lineno, p->fts_accpath);
220		(void)close(fd);
221		output(indent, &offset, "cksum=%lu", val);
222	}
223#ifdef MD5
224	if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
225		char *digest, buf[33];
226
227		digest = MD5File(p->fts_accpath, buf);
228		if (!digest) {
229			err(1, "line %d: %s", lineno, p->fts_accpath);
230		} else {
231			output(indent, &offset, "md5digest=%s", digest);
232		}
233	}
234#endif /* MD5 */
235#ifdef SHA1
236	if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
237		char *digest, buf[41];
238
239		digest = SHA1_File(p->fts_accpath, buf);
240		if (!digest) {
241			err(1, "line %d: %s", lineno, p->fts_accpath);
242		} else {
243			output(indent, &offset, "sha1digest=%s", digest);
244		}
245	}
246#endif /* SHA1 */
247#ifdef RMD160
248	if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
249		char *digest, buf[41];
250
251		digest = RIPEMD160_File(p->fts_accpath, buf);
252		if (!digest) {
253			err(1, "line %d: %s", lineno, p->fts_accpath);
254		} else {
255			output(indent, &offset, "ripemd160digest=%s", digest);
256		}
257	}
258#endif /* RMD160 */
259	if (keys & F_SLINK &&
260	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
261		output(indent, &offset, "link=%s", rlink(p->fts_accpath));
262	if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
263		fflags = flags_to_string(p->fts_statp->st_flags);
264		output(indent, &offset, "flags=%s", fflags);
265		free(fflags);
266	}
267	(void)putchar('\n');
268}
269
270#define	MAXGID	5000
271#define	MAXUID	5000
272#define	MAXMODE	MBITS + 1
273#define	MAXFLAGS 256
274#define	MAXS 16
275
276static int
277statd(t, parent, puid, pgid, pmode, pflags)
278	FTS *t;
279	FTSENT *parent;
280	uid_t *puid;
281	gid_t *pgid;
282	mode_t *pmode;
283	u_long *pflags;
284{
285	register FTSENT *p;
286	register gid_t sgid;
287	register uid_t suid;
288	register mode_t smode;
289	register u_long sflags;
290	struct group *gr;
291	struct passwd *pw;
292	gid_t savegid = *pgid;
293	uid_t saveuid = *puid;
294	mode_t savemode = *pmode;
295	u_long saveflags = *pflags;
296	u_short maxgid, maxuid, maxmode, maxflags;
297	u_short g[MAXGID], u[MAXUID], m[MAXMODE], f[MAXFLAGS];
298	char *fflags;
299	static int first = 1;
300
301	if ((p = fts_children(t, 0)) == NULL) {
302		if (errno)
303			err(1, "line %d: %s", lineno, RP(parent));
304		return (1);
305	}
306
307	bzero(g, sizeof(g));
308	bzero(u, sizeof(u));
309	bzero(m, sizeof(m));
310	bzero(f, sizeof(f));
311
312	maxuid = maxgid = maxmode = maxflags = 0;
313	for (; p; p = p->fts_link) {
314		if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
315			smode = p->fts_statp->st_mode & MBITS;
316			if (smode < MAXMODE && ++m[smode] > maxmode) {
317				savemode = smode;
318				maxmode = m[smode];
319			}
320			sgid = p->fts_statp->st_gid;
321			if (sgid < MAXGID && ++g[sgid] > maxgid) {
322				savegid = sgid;
323				maxgid = g[sgid];
324			}
325			suid = p->fts_statp->st_uid;
326			if (suid < MAXUID && ++u[suid] > maxuid) {
327				saveuid = suid;
328				maxuid = u[suid];
329			}
330
331			/*
332			 * XXX
333			 * note that the below will break when file flags
334			 * are extended beyond the first 4 bytes of each
335			 * half word of the flags
336			 */
337#define FLAGS2IDX(f) ((f & 0xf) | ((f >> 12) & 0xf0))
338			sflags = p->fts_statp->st_flags;
339			if (FLAGS2IDX(sflags) < MAXFLAGS &&
340			    ++f[FLAGS2IDX(sflags)] > maxflags) {
341				saveflags = sflags;
342				maxflags = f[FLAGS2IDX(sflags)];
343			}
344		}
345	}
346	/*
347	 * If the /set record is the same as the last one we do not need to output
348	 * a new one.  So first we check to see if anything changed.  Note that we
349	 * always output a /set record for the first directory.
350	 */
351	if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
352	    (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
353	    ((keys & F_MODE) && (*pmode != savemode)) ||
354	    ((keys & F_FLAGS) && (*pflags != saveflags)) ||
355	    (first)) {
356		first = 0;
357		if (dflag)
358			(void)printf("/set type=dir");
359		else
360			(void)printf("/set type=file");
361		if (keys & F_UNAME) {
362			if ((pw = getpwuid(saveuid)) != NULL)
363				(void)printf(" uname=%s", pw->pw_name);
364			else
365				errx(1,
366				"line %d: could not get uname for uid=%u",
367				lineno, saveuid);
368		}
369		if (keys & F_UID)
370			(void)printf(" uid=%lu", (u_long)saveuid);
371		if (keys & F_GNAME) {
372			if ((gr = getgrgid(savegid)) != NULL)
373				(void)printf(" gname=%s", gr->gr_name);
374			else
375				errx(1,
376				"line %d: could not get gname for gid=%u",
377				lineno, savegid);
378		}
379		if (keys & F_GID)
380			(void)printf(" gid=%lu", (u_long)savegid);
381		if (keys & F_MODE)
382			(void)printf(" mode=%#o", savemode);
383		if (keys & F_NLINK)
384			(void)printf(" nlink=1");
385		if (keys & F_FLAGS) {
386			fflags = flags_to_string(saveflags);
387			(void)printf(" flags=%s", fflags);
388			free(fflags);
389		}
390		(void)printf("\n");
391		*puid = saveuid;
392		*pgid = savegid;
393		*pmode = savemode;
394		*pflags = saveflags;
395	}
396	return (0);
397}
398
399static int
400dsort(a, b)
401	const FTSENT **a, **b;
402{
403	if (S_ISDIR((*a)->fts_statp->st_mode)) {
404		if (!S_ISDIR((*b)->fts_statp->st_mode))
405			return (1);
406	} else if (S_ISDIR((*b)->fts_statp->st_mode))
407		return (-1);
408	return (strcmp((*a)->fts_name, (*b)->fts_name));
409}
410
411#include <stdarg.h>
412
413void
414output(int indent, int *offset, const char *fmt, ...)
415{
416	va_list ap;
417	char buf[1024];
418	va_start(ap, fmt);
419	(void)vsnprintf(buf, sizeof(buf), fmt, ap);
420	va_end(ap);
421
422	if (*offset + strlen(buf) > MAXLINELEN - 3) {
423		(void)printf(" \\\n%*s", INDENTNAMELEN + indent, "");
424		*offset = INDENTNAMELEN + indent;
425	}
426	*offset += printf(" %s", buf) + 1;
427}
428