create.c revision 61749 
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 61749 2000-06-17 14:19:33Z joe $";
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 <stdio.h>
61#include <time.h>
62#include <unistd.h>
63#include <vis.h>
64#include "mtree.h"
65#include "extern.h"
66
67#define	INDENTNAMELEN	15
68#define	MAXLINELEN	80
69
70extern long int crc_total;
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;
81
82static int	dsort __P((const FTSENT **, const FTSENT **));
83static void	output __P((int, int *, const char *, ...));
84static int	statd __P((FTS *, FTSENT *, uid_t *, gid_t *, mode_t *,
85			   u_long *));
86static void	statf __P((int, FTSENT *));
87
88void
89cwalk()
90{
91	register FTS *t;
92	register FTSENT *p;
93	time_t clock;
94	char *argv[2], host[MAXHOSTNAMELEN];
95	int indent = 0;
96
97	(void)time(&clock);
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(&clock));
102
103	argv[0] = ".";
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, crc_total);
145}
146
147static void
148statf(indent, p)
149	int indent;
150	FTSENT *p;
151{
152	struct group *gr;
153	struct passwd *pw;
154	u_long len, val;
155	int fd, offset;
156	char *fflags;
157	char *escaped_name;
158
159	escaped_name = calloc(1, p->fts_namelen * 4  +  1);
160	if (escaped_name == NULL)
161		errx(1, "statf(): calloc() failed");
162	strvis(escaped_name, p->fts_name, VIS_WHITE | VIS_OCTAL);
163
164	if (iflag || S_ISDIR(p->fts_statp->st_mode))
165		offset = printf("%*s%s", indent, "", escaped_name);
166	else
167		offset = printf("%*s    %s", indent, "", escaped_name);
168
169	free(escaped_name);
170
171	if (offset > (INDENTNAMELEN + indent))
172		offset = MAXLINELEN;
173	else
174		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
175
176	if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
177		output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
178	if (p->fts_statp->st_uid != uid) {
179		if (keys & F_UNAME) {
180			if ((pw = getpwuid(p->fts_statp->st_uid)) != NULL) {
181				output(indent, &offset, "uname=%s", pw->pw_name);
182			} else {
183				errx(1,
184				"line %d: could not get uname for uid=%u",
185				lineno, p->fts_statp->st_uid);
186			}
187		}
188		if (keys & F_UID)
189			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
190	}
191	if (p->fts_statp->st_gid != gid) {
192		if (keys & F_GNAME) {
193			if ((gr = getgrgid(p->fts_statp->st_gid)) != NULL) {
194				output(indent, &offset, "gname=%s", gr->gr_name);
195			} else {
196				errx(1,
197				"line %d: could not get gname for gid=%u",
198				lineno, p->fts_statp->st_gid);
199			}
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=%qd", p->fts_statp->st_size);
210	if (keys & F_TIME)
211		output(indent, &offset, "time=%ld.%ld",
212		    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", 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(t, parent, puid, pgid, pmode, pflags)
276	FTS *t;
277	FTSENT *parent;
278	uid_t *puid;
279	gid_t *pgid;
280	mode_t *pmode;
281	u_long *pflags;
282{
283	register FTSENT *p;
284	register gid_t sgid;
285	register uid_t suid;
286	register mode_t smode;
287	register u_long sflags;
288	struct group *gr;
289	struct passwd *pw;
290	gid_t savegid = *pgid;
291	uid_t saveuid = *puid;
292	mode_t savemode = *pmode;
293	u_long saveflags = 0;
294	u_short maxgid, maxuid, maxmode, maxflags;
295	u_short g[MAXGID], u[MAXUID], m[MAXMODE], f[MAXFLAGS];
296	char *fflags;
297	static int first = 1;
298
299	if ((p = fts_children(t, 0)) == NULL) {
300		if (errno)
301			err(1, "line %d: %s", lineno, RP(parent));
302		return (1);
303	}
304
305	bzero(g, sizeof(g));
306	bzero(u, sizeof(u));
307	bzero(m, sizeof(m));
308	bzero(f, sizeof(f));
309
310	maxuid = maxgid = maxmode = maxflags = 0;
311	for (; p; p = p->fts_link) {
312		if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
313			smode = p->fts_statp->st_mode & MBITS;
314			if (smode < MAXMODE && ++m[smode] > maxmode) {
315				savemode = smode;
316				maxmode = m[smode];
317			}
318			sgid = p->fts_statp->st_gid;
319			if (sgid < MAXGID && ++g[sgid] > maxgid) {
320				savegid = sgid;
321				maxgid = g[sgid];
322			}
323			suid = p->fts_statp->st_uid;
324			if (suid < MAXUID && ++u[suid] > maxuid) {
325				saveuid = suid;
326				maxuid = u[suid];
327			}
328
329			/*
330			 * XXX
331			 * note that the below will break when file flags
332			 * are extended beyond the first 4 bytes of each
333			 * half word of the flags
334			 */
335#define FLAGS2IDX(f) ((f & 0xf) | ((f >> 12) & 0xf0))
336			sflags = p->fts_statp->st_flags;
337			if (FLAGS2IDX(sflags) < MAXFLAGS &&
338			    ++f[FLAGS2IDX(sflags)] > maxflags) {
339				saveflags = sflags;
340				maxflags = u[FLAGS2IDX(sflags)];
341			}
342		}
343	}
344	/*
345	 * If the /set record is the same as the last one we do not need to output
346	 * a new one.  So first we check to see if anything changed.  Note that we
347	 * always output a /set record for the first directory.
348	 */
349	if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
350	    (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
351	    ((keys & F_MODE) && (*pmode != savemode)) || (first)) {
352		first = 0;
353		if (dflag)
354			(void)printf("/set type=dir");
355		else
356			(void)printf("/set type=file");
357		if (keys & F_UNAME) {
358			if ((pw = getpwuid(saveuid)) != NULL)
359				(void)printf(" uname=%s", pw->pw_name);
360			else
361				errx(1,
362				"line %d: could not get uname for uid=%u",
363				lineno, saveuid);
364		}
365		if (keys & F_UID)
366			(void)printf(" uid=%lu", (u_long)saveuid);
367		if (keys & F_GNAME) {
368			if ((gr = getgrgid(savegid)) != NULL)
369				(void)printf(" gname=%s", gr->gr_name);
370			else
371				errx(1,
372				"line %d: could not get gname for gid=%u",
373				lineno, savegid);
374		}
375		if (keys & F_GID)
376			(void)printf(" gid=%lu", (u_long)savegid);
377		if (keys & F_MODE)
378			(void)printf(" mode=%#o", savemode);
379		if (keys & F_NLINK)
380			(void)printf(" nlink=1");
381		if (keys & F_FLAGS && saveflags) {
382			fflags = flags_to_string(saveflags);
383			(void)printf(" flags=%s", fflags);
384			free(fflags);
385		}
386		(void)printf("\n");
387		*puid = saveuid;
388		*pgid = savegid;
389		*pmode = savemode;
390		*pflags = saveflags;
391	}
392	return (0);
393}
394
395static int
396dsort(a, b)
397	const FTSENT **a, **b;
398{
399	if (S_ISDIR((*a)->fts_statp->st_mode)) {
400		if (!S_ISDIR((*b)->fts_statp->st_mode))
401			return (1);
402	} else if (S_ISDIR((*b)->fts_statp->st_mode))
403		return (-1);
404	return (strcmp((*a)->fts_name, (*b)->fts_name));
405}
406
407#if __STDC__
408#include <stdarg.h>
409#else
410#include <varargs.h>
411#endif
412
413void
414#if __STDC__
415output(int indent, int *offset, const char *fmt, ...)
416#else
417output(indent, offset, fmt, va_alist)
418	int indent;
419	int *offset;
420	char *fmt;
421        va_dcl
422#endif
423{
424	va_list ap;
425	char buf[1024];
426#if __STDC__
427	va_start(ap, fmt);
428#else
429	va_start(ap);
430#endif
431	(void)vsnprintf(buf, sizeof(buf), fmt, ap);
432	va_end(ap);
433
434	if (*offset + strlen(buf) > MAXLINELEN - 3) {
435		(void)printf(" \\\n%*s", INDENTNAMELEN + indent, "");
436		*offset = INDENTNAMELEN + indent;
437	}
438	*offset += printf(" %s", buf) + 1;
439}
440