1/*	$OpenBSD: mtree.c,v 1.28 2022/12/04 23:50:51 cheloha Exp $	*/
2/*	$NetBSD: mtree.c,v 1.7 1996/09/05 23:29:22 thorpej Exp $	*/
3
4/*-
5 * Copyright (c) 1989, 1990, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/stat.h>
34#include <err.h>
35#include <errno.h>
36#include <unistd.h>
37#include <stdio.h>
38#include <limits.h>
39#include <fts.h>
40#include <grp.h>
41#include <pwd.h>
42#include "mtree.h"
43#include "extern.h"
44
45extern u_int32_t crc_total;
46
47int ftsoptions = FTS_PHYSICAL;
48int cflag, dflag, eflag, iflag, lflag, nflag, qflag, rflag, sflag, tflag,
49    uflag, Uflag;
50u_int keys;
51char fullpath[PATH_MAX];
52
53static void usage(void);
54
55int
56main(int argc, char *argv[])
57{
58	int ch;
59	char *dir, *p;
60	int status;
61
62	dir = NULL;
63	keys = KEYDEFAULT;
64	while ((ch = getopt(argc, argv, "cdef:iK:k:lnp:qrs:tUux")) != -1)
65		switch(ch) {
66		case 'c':
67			cflag = 1;
68			break;
69		case 'd':
70			dflag = 1;
71			break;
72		case 'e':
73			eflag = 1;
74			break;
75		case 'f':
76			if (!(freopen(optarg, "r", stdin)))
77				error("%s: %s", optarg, strerror(errno));
78			break;
79		case 'i':
80			iflag = 1;
81			break;
82		case 'K':
83			while ((p = strsep(&optarg, " \t,")) != NULL)
84				if (*p != '\0')
85					keys |= parsekey(p, NULL);
86			break;
87		case 'k':
88			keys = F_TYPE;
89			while ((p = strsep(&optarg, " \t,")) != NULL)
90				if (*p != '\0')
91					keys |= parsekey(p, NULL);
92			break;
93		case 'l':
94			lflag = 1;
95			break;
96		case 'n':
97			nflag = 1;
98			break;
99		case 'p':
100			dir = optarg;
101			break;
102		case 'q':
103			qflag = 1;
104			break;
105		case 'r':
106			rflag = 1;
107			break;
108		case 's':
109			sflag = 1;
110			crc_total = ~strtol(optarg, &p, 0);
111			if (*p)
112				error("illegal seed value -- %s", optarg);
113			break;
114		case 't':
115			tflag = 1;
116			break;
117		case 'U':
118			Uflag = 1;
119			uflag = 1;
120			break;
121		case 'u':
122			uflag = 1;
123			break;
124		case 'x':
125			ftsoptions |= FTS_XDEV;
126			break;
127		default:
128			usage();
129		}
130	argc -= optind;
131	argv += optind;
132
133	if (argc)
134		usage();
135
136	/*
137	 * If uflag is set we can't make any pledges because we must be able
138	 * to chown and place setugid bits.  Make sure that we're pledged
139	 * when -c was specified.
140	 */
141	if (!uflag || cflag) {
142		if (rflag && tflag) {
143			if (pledge("stdio rpath cpath getpw fattr", NULL) == -1)
144				err(1, "pledge");
145		} else if (rflag && !tflag) {
146			if (pledge("stdio rpath cpath getpw", NULL) == -1)
147				err(1, "pledge");
148		} else if (!rflag && tflag) {
149			if (pledge("stdio rpath getpw fattr", NULL) == -1)
150				err(1, "pledge");
151		} else {
152			if (pledge("stdio rpath getpw", NULL) == -1)
153				err(1, "pledge");
154		}
155	}
156
157	/* Keep passwd and group files open for faster lookups. */
158	setpassent(1);
159	setgroupent(1);
160
161	if (dir && chdir(dir))
162		error("%s: %s", dir, strerror(errno));
163
164	if ((cflag || sflag) && !getcwd(fullpath, sizeof fullpath))
165		error("getcwd: %s", strerror(errno));
166
167	if (lflag == 1 && uflag == 1)
168		error("-l and -u flags are mutually exclusive");
169
170	if (cflag) {
171		cwalk();
172		exit(0);
173	}
174	status = verify();
175	if (Uflag && (status == MISMATCHEXIT))
176		status = 0;
177	exit(status);
178}
179
180static void
181usage(void)
182{
183	(void)fprintf(stderr,
184	    "usage: mtree [-cdeilnqrtUux] [-f spec] [-K keywords] "
185	    "[-k keywords] [-p path]\n"
186	    "             [-s seed]\n");
187	exit(1);
188}
189