create.c revision 122134 
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 122134 2003-11-05 20:05:05Z 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
67extern int ftsoptions;
68extern int dflag, iflag, nflag, sflag;
69extern u_int keys;
70extern char fullpath[MAXPATHLEN];
71extern int lineno;
72
73static gid_t gid;
74static uid_t uid;
75static mode_t mode;
76static u_long flags = 0xffffffff;
77
78static int	dsort(const FTSENT * const *, const FTSENT * const *);
79static void	output(int, int *, const char *, ...) __printflike(3, 4);
80static int	statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
81static void	statf(int, FTSENT *);
82
83void
84cwalk(void)
85{
86	FTS *t;
87	FTSENT *p;
88	time_t cl;
89	char *argv[2], host[MAXHOSTNAMELEN];
90	char dot[] = ".";
91	int indent = 0;
92
93	(void)time(&cl);
94	(void)gethostname(host, sizeof(host));
95	(void)printf(
96	    "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n#\t   date: %s",
97	    getlogin(), host, fullpath, ctime(&cl));
98
99	argv[0] = dot;
100	argv[1] = NULL;
101	if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
102		err(1, "line %d: fts_open", lineno);
103	while ((p = fts_read(t))) {
104		if (iflag)
105			indent = p->fts_level * 4;
106		if (check_excludes(p->fts_name, p->fts_path)) {
107			fts_set(t, p, FTS_SKIP);
108			continue;
109		}
110		switch(p->fts_info) {
111		case FTS_D:
112			if (!dflag)
113				(void)printf("\n");
114			if (!nflag)
115				(void)printf("# %s\n", p->fts_path);
116			statd(t, p, &uid, &gid, &mode, &flags);
117			statf(indent, p);
118			break;
119		case FTS_DP:
120			if (!nflag && (p->fts_level > 0))
121				(void)printf("%*s# %s\n", indent, "", p->fts_path);
122			(void)printf("%*s..\n", indent, "");
123			if (!dflag)
124				(void)printf("\n");
125			break;
126		case FTS_DNR:
127		case FTS_ERR:
128		case FTS_NS:
129			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
130			break;
131		default:
132			if (!dflag)
133				statf(indent, p);
134			break;
135
136		}
137	}
138	(void)fts_close(t);
139	if (sflag && keys & F_CKSUM)
140		warnx("%s checksum: %lu", fullpath, (unsigned long)crc_total);
141}
142
143static void
144statf(int indent, FTSENT *p)
145{
146	struct group *gr;
147	struct passwd *pw;
148	uint32_t val;
149	off_t len;
150	int fd, offset;
151	char *fflags;
152	char *escaped_name;
153
154	escaped_name = calloc(1, p->fts_namelen * 4  +  1);
155	if (escaped_name == NULL)
156		errx(1, "statf(): calloc() failed");
157	strvis(escaped_name, p->fts_name, VIS_WHITE | VIS_OCTAL | VIS_GLOB);
158
159	if (iflag || S_ISDIR(p->fts_statp->st_mode))
160		offset = printf("%*s%s", indent, "", escaped_name);
161	else
162		offset = printf("%*s    %s", indent, "", escaped_name);
163
164	free(escaped_name);
165
166	if (offset > (INDENTNAMELEN + indent))
167		offset = MAXLINELEN;
168	else
169		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
170
171	if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
172		output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
173	if (p->fts_statp->st_uid != uid) {
174		if (keys & F_UNAME) {
175			if ((pw = getpwuid(p->fts_statp->st_uid)) == NULL)
176				errx(1,
177				    "line %d: could not get uname for uid=%u",
178				    lineno, p->fts_statp->st_uid);
179			output(indent, &offset, "uname=%s", pw->pw_name);
180		}
181		if (keys & F_UID)
182			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
183	}
184	if (p->fts_statp->st_gid != gid) {
185		if (keys & F_GNAME) {
186			if ((gr = getgrgid(p->fts_statp->st_gid)) == NULL)
187				errx(1,
188				    "line %d: could not get gname for gid=%u",
189				    lineno, p->fts_statp->st_gid);
190			output(indent, &offset, "gname=%s", gr->gr_name);
191		}
192		if (keys & F_GID)
193			output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
194	}
195	if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
196		output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
197	if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
198		output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
199	if (keys & F_SIZE)
200		output(indent, &offset, "size=%jd",
201		    (intmax_t)p->fts_statp->st_size);
202	if (keys & F_TIME)
203		output(indent, &offset, "time=%ld.%ld",
204		    (long)p->fts_statp->st_mtimespec.tv_sec,
205		    p->fts_statp->st_mtimespec.tv_nsec);
206	if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
207		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
208		    crc(fd, &val, &len))
209			err(1, "line %d: %s", lineno, p->fts_accpath);
210		(void)close(fd);
211		output(indent, &offset, "cksum=%lu", (unsigned long)val);
212	}
213#ifdef MD5
214	if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
215		char *digest, buf[33];
216
217		digest = MD5File(p->fts_accpath, buf);
218		if (!digest)
219			err(1, "line %d: %s", lineno, p->fts_accpath);
220		output(indent, &offset, "md5digest=%s", digest);
221	}
222#endif /* MD5 */
223#ifdef SHA1
224	if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
225		char *digest, buf[41];
226
227		digest = SHA1_File(p->fts_accpath, buf);
228		if (!digest)
229			err(1, "line %d: %s", lineno, p->fts_accpath);
230		output(indent, &offset, "sha1digest=%s", digest);
231	}
232#endif /* SHA1 */
233#ifdef RMD160
234	if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
235		char *digest, buf[41];
236
237		digest = RIPEMD160_File(p->fts_accpath, buf);
238		if (!digest)
239			err(1, "line %d: %s", lineno, p->fts_accpath);
240		output(indent, &offset, "ripemd160digest=%s", digest);
241	}
242#endif /* RMD160 */
243	if (keys & F_SLINK &&
244	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
245		output(indent, &offset, "link=%s", rlink(p->fts_accpath));
246	if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
247		fflags = flags_to_string(p->fts_statp->st_flags);
248		output(indent, &offset, "flags=%s", fflags);
249		free(fflags);
250	}
251	(void)putchar('\n');
252}
253
254#define	MAXGID	5000
255#define	MAXUID	5000
256#define	MAXMODE	MBITS + 1
257#define	MAXFLAGS 256
258#define	MAXS 16
259
260static int
261statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode, u_long *pflags)
262{
263	FTSENT *p;
264	gid_t sgid;
265	uid_t suid;
266	mode_t smode;
267	u_long sflags;
268	struct group *gr;
269	struct passwd *pw;
270	gid_t savegid = *pgid;
271	uid_t saveuid = *puid;
272	mode_t savemode = *pmode;
273	u_long saveflags = *pflags;
274	u_short maxgid, maxuid, maxmode, maxflags;
275	u_short g[MAXGID], u[MAXUID], m[MAXMODE], f[MAXFLAGS];
276	char *fflags;
277	static int first = 1;
278
279	if ((p = fts_children(t, 0)) == NULL) {
280		if (errno)
281			err(1, "line %d: %s", lineno, RP(parent));
282		return (1);
283	}
284
285	bzero(g, sizeof(g));
286	bzero(u, sizeof(u));
287	bzero(m, sizeof(m));
288	bzero(f, sizeof(f));
289
290	maxuid = maxgid = maxmode = maxflags = 0;
291	for (; p; p = p->fts_link) {
292		if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
293			smode = p->fts_statp->st_mode & MBITS;
294			if (smode < MAXMODE && ++m[smode] > maxmode) {
295				savemode = smode;
296				maxmode = m[smode];
297			}
298			sgid = p->fts_statp->st_gid;
299			if (sgid < MAXGID && ++g[sgid] > maxgid) {
300				savegid = sgid;
301				maxgid = g[sgid];
302			}
303			suid = p->fts_statp->st_uid;
304			if (suid < MAXUID && ++u[suid] > maxuid) {
305				saveuid = suid;
306				maxuid = u[suid];
307			}
308
309			/*
310			 * XXX
311			 * note that the below will break when file flags
312			 * are extended beyond the first 4 bytes of each
313			 * half word of the flags
314			 */
315#define FLAGS2IDX(f) ((f & 0xf) | ((f >> 12) & 0xf0))
316			sflags = p->fts_statp->st_flags;
317			if (FLAGS2IDX(sflags) < MAXFLAGS &&
318			    ++f[FLAGS2IDX(sflags)] > maxflags) {
319				saveflags = sflags;
320				maxflags = f[FLAGS2IDX(sflags)];
321			}
322		}
323	}
324	/*
325	 * If the /set record is the same as the last one we do not need to output
326	 * a new one.  So first we check to see if anything changed.  Note that we
327	 * always output a /set record for the first directory.
328	 */
329	if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
330	    (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
331	    ((keys & F_MODE) && (*pmode != savemode)) ||
332	    ((keys & F_FLAGS) && (*pflags != saveflags)) ||
333	    (first)) {
334		first = 0;
335		if (dflag)
336			(void)printf("/set type=dir");
337		else
338			(void)printf("/set type=file");
339		if (keys & F_UNAME) {
340			if ((pw = getpwuid(saveuid)) != NULL)
341				(void)printf(" uname=%s", pw->pw_name);
342			else
343				errx(1,
344				"line %d: could not get uname for uid=%u",
345				lineno, saveuid);
346		}
347		if (keys & F_UID)
348			(void)printf(" uid=%lu", (u_long)saveuid);
349		if (keys & F_GNAME) {
350			if ((gr = getgrgid(savegid)) != NULL)
351				(void)printf(" gname=%s", gr->gr_name);
352			else
353				errx(1,
354				"line %d: could not get gname for gid=%u",
355				lineno, savegid);
356		}
357		if (keys & F_GID)
358			(void)printf(" gid=%lu", (u_long)savegid);
359		if (keys & F_MODE)
360			(void)printf(" mode=%#o", savemode);
361		if (keys & F_NLINK)
362			(void)printf(" nlink=1");
363		if (keys & F_FLAGS) {
364			fflags = flags_to_string(saveflags);
365			(void)printf(" flags=%s", fflags);
366			free(fflags);
367		}
368		(void)printf("\n");
369		*puid = saveuid;
370		*pgid = savegid;
371		*pmode = savemode;
372		*pflags = saveflags;
373	}
374	return (0);
375}
376
377static int
378dsort(const FTSENT * const *a, const FTSENT * const *b)
379{
380	if (S_ISDIR((*a)->fts_statp->st_mode)) {
381		if (!S_ISDIR((*b)->fts_statp->st_mode))
382			return (1);
383	} else if (S_ISDIR((*b)->fts_statp->st_mode))
384		return (-1);
385	return (strcmp((*a)->fts_name, (*b)->fts_name));
386}
387
388#include <stdarg.h>
389
390void
391output(int indent, int *offset, const char *fmt, ...)
392{
393	va_list ap;
394	char buf[1024];
395	va_start(ap, fmt);
396	(void)vsnprintf(buf, sizeof(buf), fmt, ap);
397	va_end(ap);
398
399	if (*offset + strlen(buf) > MAXLINELEN - 3) {
400		(void)printf(" \\\n%*s", INDENTNAMELEN + indent, "");
401		*offset = INDENTNAMELEN + indent;
402	}
403	*offset += printf(" %s", buf) + 1;
404}
405