create.c revision 124389 
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. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#if 0
31#ifndef lint
32static char sccsid[] = "@(#)create.c	8.1 (Berkeley) 6/6/93";
33#endif /* not lint */
34#endif
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD: head/usr.sbin/mtree/create.c 124389 2004-01-11 19:38:48Z phk $");
37
38#include <sys/param.h>
39#include <sys/stat.h>
40#include <dirent.h>
41#include <err.h>
42#include <errno.h>
43#include <fcntl.h>
44#include <fts.h>
45#include <grp.h>
46#ifdef MD5
47#include <md5.h>
48#endif
49#ifdef SHA1
50#include <sha.h>
51#endif
52#ifdef RMD160
53#include <ripemd.h>
54#endif
55#include <pwd.h>
56#include <stdint.h>
57#include <stdio.h>
58#include <time.h>
59#include <unistd.h>
60#include <vis.h>
61#include "mtree.h"
62#include "extern.h"
63
64#define	INDENTNAMELEN	15
65#define	MAXLINELEN	80
66
67static gid_t gid;
68static uid_t uid;
69static mode_t mode;
70static u_long flags = 0xffffffff;
71
72static int	dsort(const FTSENT * const *, const FTSENT * const *);
73static void	output(int, int *, const char *, ...) __printflike(3, 4);
74static int	statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
75static void	statf(int, FTSENT *);
76
77void
78cwalk(void)
79{
80	FTS *t;
81	FTSENT *p;
82	time_t cl;
83	char *argv[2], host[MAXHOSTNAMELEN];
84	char dot[] = ".";
85	int indent = 0;
86
87	if (!nflag) {
88		(void)time(&cl);
89		(void)gethostname(host, sizeof(host));
90		(void)printf(
91		    "#\t   user: %s\n#\tmachine: %s\n",
92		    getlogin(), host);
93		(void)printf(
94		    "#\t   tree: %s\n#\t   date: %s",
95		    fullpath, ctime(&cl));
96	}
97
98	argv[0] = dot;
99	argv[1] = NULL;
100	if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
101		err(1, "fts_open()");
102	while ((p = fts_read(t))) {
103		if (iflag)
104			indent = p->fts_level * 4;
105		if (check_excludes(p->fts_name, p->fts_path)) {
106			fts_set(t, p, FTS_SKIP);
107			continue;
108		}
109		switch(p->fts_info) {
110		case FTS_D:
111			if (!dflag)
112				(void)printf("\n");
113			if (!nflag)
114				(void)printf("# %s\n", p->fts_path);
115			statd(t, p, &uid, &gid, &mode, &flags);
116			statf(indent, p);
117			break;
118		case FTS_DP:
119			if (!nflag && (p->fts_level > 0))
120				(void)printf("%*s# %s\n", indent, "", p->fts_path);
121			(void)printf("%*s..\n", indent, "");
122			if (!dflag)
123				(void)printf("\n");
124			break;
125		case FTS_DNR:
126		case FTS_ERR:
127		case FTS_NS:
128			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
129			break;
130		default:
131			if (!dflag)
132				statf(indent, p);
133			break;
134
135		}
136	}
137	(void)fts_close(t);
138	if (sflag && keys & F_CKSUM)
139		warnx("%s checksum: %lu", fullpath, (unsigned long)crc_total);
140}
141
142static void
143statf(int indent, FTSENT *p)
144{
145	struct group *gr;
146	struct passwd *pw;
147	uint32_t val;
148	off_t len;
149	int fd, offset;
150	char *fflags;
151	char *escaped_name;
152
153	escaped_name = calloc(1, p->fts_namelen * 4  +  1);
154	if (escaped_name == NULL)
155		errx(1, "statf(): calloc() failed");
156	strvis(escaped_name, p->fts_name, VIS_WHITE | VIS_OCTAL | VIS_GLOB);
157
158	if (iflag || S_ISDIR(p->fts_statp->st_mode))
159		offset = printf("%*s%s", indent, "", escaped_name);
160	else
161		offset = printf("%*s    %s", indent, "", escaped_name);
162
163	free(escaped_name);
164
165	if (offset > (INDENTNAMELEN + indent))
166		offset = MAXLINELEN;
167	else
168		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
169
170	if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
171		output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
172	if (p->fts_statp->st_uid != uid) {
173		if (keys & F_UNAME) {
174			pw = getpwuid(p->fts_statp->st_uid);
175			if (pw != NULL)
176				output(indent, &offset, "uname=%s", pw->pw_name);
177			else if (wflag)
178				warnx("Could not get uname for uid=%u",
179				    p->fts_statp->st_uid);
180			else
181				errx(1,
182				    "Could not get uname for uid=%u",
183				    p->fts_statp->st_uid);
184		}
185		if (keys & F_UID)
186			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
187	}
188	if (p->fts_statp->st_gid != gid) {
189		if (keys & F_GNAME) {
190			gr = getgrgid(p->fts_statp->st_gid);
191			if (gr != NULL)
192				output(indent, &offset, "gname=%s", gr->gr_name);
193			else if (wflag)
194				warnx("Could not get gname for gid=%u",
195				    p->fts_statp->st_gid);
196			else
197				errx(1,
198				    "Could not get gname for gid=%u",
199				    p->fts_statp->st_gid);
200		}
201		if (keys & F_GID)
202			output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
203	}
204	if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
205		output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
206	if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
207		output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
208	if (keys & F_SIZE)
209		output(indent, &offset, "size=%jd",
210		    (intmax_t)p->fts_statp->st_size);
211	if (keys & F_TIME)
212		output(indent, &offset, "time=%ld.%ld",
213		    (long)p->fts_statp->st_mtimespec.tv_sec,
214		    p->fts_statp->st_mtimespec.tv_nsec);
215	if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
216		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
217		    crc(fd, &val, &len))
218			err(1, "%s", p->fts_accpath);
219		(void)close(fd);
220		output(indent, &offset, "cksum=%lu", (unsigned long)val);
221	}
222#ifdef MD5
223	if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
224		char *digest, buf[33];
225
226		digest = MD5File(p->fts_accpath, buf);
227		if (!digest)
228			err(1, "%s", p->fts_accpath);
229		output(indent, &offset, "md5digest=%s", digest);
230	}
231#endif /* MD5 */
232#ifdef SHA1
233	if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
234		char *digest, buf[41];
235
236		digest = SHA1_File(p->fts_accpath, buf);
237		if (!digest)
238			err(1, "%s", p->fts_accpath);
239		output(indent, &offset, "sha1digest=%s", digest);
240	}
241#endif /* SHA1 */
242#ifdef RMD160
243	if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
244		char *digest, buf[41];
245
246		digest = RIPEMD160_File(p->fts_accpath, buf);
247		if (!digest)
248			err(1, "%s", p->fts_accpath);
249		output(indent, &offset, "ripemd160digest=%s", digest);
250	}
251#endif /* RMD160 */
252	if (keys & F_SLINK &&
253	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
254		output(indent, &offset, "link=%s", rlink(p->fts_accpath));
255	if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
256		fflags = flags_to_string(p->fts_statp->st_flags);
257		output(indent, &offset, "flags=%s", fflags);
258		free(fflags);
259	}
260	(void)putchar('\n');
261}
262
263#define	MAXGID	5000
264#define	MAXUID	5000
265#define	MAXMODE	MBITS + 1
266#define	MAXFLAGS 256
267#define	MAXS 16
268
269static int
270statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode, u_long *pflags)
271{
272	FTSENT *p;
273	gid_t sgid;
274	uid_t suid;
275	mode_t smode;
276	u_long sflags;
277	struct group *gr;
278	struct passwd *pw;
279	gid_t savegid = *pgid;
280	uid_t saveuid = *puid;
281	mode_t savemode = *pmode;
282	u_long saveflags = *pflags;
283	u_short maxgid, maxuid, maxmode, maxflags;
284	u_short g[MAXGID], u[MAXUID], m[MAXMODE], f[MAXFLAGS];
285	char *fflags;
286	static int first = 1;
287
288	if ((p = fts_children(t, 0)) == NULL) {
289		if (errno)
290			err(1, "%s", RP(parent));
291		return (1);
292	}
293
294	bzero(g, sizeof(g));
295	bzero(u, sizeof(u));
296	bzero(m, sizeof(m));
297	bzero(f, sizeof(f));
298
299	maxuid = maxgid = maxmode = maxflags = 0;
300	for (; p; p = p->fts_link) {
301		if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
302			smode = p->fts_statp->st_mode & MBITS;
303			if (smode < MAXMODE && ++m[smode] > maxmode) {
304				savemode = smode;
305				maxmode = m[smode];
306			}
307			sgid = p->fts_statp->st_gid;
308			if (sgid < MAXGID && ++g[sgid] > maxgid) {
309				savegid = sgid;
310				maxgid = g[sgid];
311			}
312			suid = p->fts_statp->st_uid;
313			if (suid < MAXUID && ++u[suid] > maxuid) {
314				saveuid = suid;
315				maxuid = u[suid];
316			}
317
318			/*
319			 * XXX
320			 * note that the below will break when file flags
321			 * are extended beyond the first 4 bytes of each
322			 * half word of the flags
323			 */
324#define FLAGS2IDX(f) ((f & 0xf) | ((f >> 12) & 0xf0))
325			sflags = p->fts_statp->st_flags;
326			if (FLAGS2IDX(sflags) < MAXFLAGS &&
327			    ++f[FLAGS2IDX(sflags)] > maxflags) {
328				saveflags = sflags;
329				maxflags = f[FLAGS2IDX(sflags)];
330			}
331		}
332	}
333	/*
334	 * If the /set record is the same as the last one we do not need to output
335	 * a new one.  So first we check to see if anything changed.  Note that we
336	 * always output a /set record for the first directory.
337	 */
338	if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
339	    (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
340	    ((keys & F_MODE) && (*pmode != savemode)) ||
341	    ((keys & F_FLAGS) && (*pflags != saveflags)) ||
342	    (first)) {
343		first = 0;
344		if (dflag)
345			(void)printf("/set type=dir");
346		else
347			(void)printf("/set type=file");
348		if (keys & F_UNAME) {
349			pw = getpwuid(saveuid);
350			if (pw != NULL)
351				(void)printf(" uname=%s", pw->pw_name);
352			else if (wflag)
353				warnx( "Could not get uname for uid=%u", saveuid);
354			else
355				errx(1, "Could not get uname for uid=%u", saveuid);
356		}
357		if (keys & F_UID)
358			(void)printf(" uid=%lu", (u_long)saveuid);
359		if (keys & F_GNAME) {
360			gr = getgrgid(savegid);
361			if (gr != NULL)
362				(void)printf(" gname=%s", gr->gr_name);
363			else if (wflag)
364				warnx("Could not get gname for gid=%u", savegid);
365			else
366				errx(1, "Could not get gname for gid=%u", savegid);
367		}
368		if (keys & F_GID)
369			(void)printf(" gid=%lu", (u_long)savegid);
370		if (keys & F_MODE)
371			(void)printf(" mode=%#o", savemode);
372		if (keys & F_NLINK)
373			(void)printf(" nlink=1");
374		if (keys & F_FLAGS) {
375			fflags = flags_to_string(saveflags);
376			(void)printf(" flags=%s", fflags);
377			free(fflags);
378		}
379		(void)printf("\n");
380		*puid = saveuid;
381		*pgid = savegid;
382		*pmode = savemode;
383		*pflags = saveflags;
384	}
385	return (0);
386}
387
388static int
389dsort(const FTSENT * const *a, const FTSENT * const *b)
390{
391	if (S_ISDIR((*a)->fts_statp->st_mode)) {
392		if (!S_ISDIR((*b)->fts_statp->st_mode))
393			return (1);
394	} else if (S_ISDIR((*b)->fts_statp->st_mode))
395		return (-1);
396	return (strcmp((*a)->fts_name, (*b)->fts_name));
397}
398
399#include <stdarg.h>
400
401void
402output(int indent, int *offset, const char *fmt, ...)
403{
404	va_list ap;
405	char buf[1024];
406	va_start(ap, fmt);
407	(void)vsnprintf(buf, sizeof(buf), fmt, ap);
408	va_end(ap);
409
410	if (*offset + strlen(buf) > MAXLINELEN - 3) {
411		(void)printf(" \\\n%*s", INDENTNAMELEN + indent, "");
412		*offset = INDENTNAMELEN + indent;
413	}
414	*offset += printf(" %s", buf) + 1;
415}
416