root/usr.sbin/mtree/mtree.c
/*      @(#)mtree.c     8.1 (Berkeley) 6/6/93   */
/*      $NetBSD: mtree.c,v 1.50 2015/01/23 02:27:01 christos Exp $      */

/*-
 * Copyright (c) 1989, 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/param.h>
#include <sys/stat.h>

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "extern.h"

int     ftsoptions = FTS_PHYSICAL;
int     bflag, dflag, eflag, iflag, jflag, lflag, mflag, nflag, qflag, rflag,
        sflag, tflag, uflag;
char    fullpath[MAXPATHLEN];

static struct {
        enum flavor flavor;
        const char name[9];
} flavors[] = {
        {F_MTREE, "mtree"},
        {F_FREEBSD9, "freebsd9"},
        {F_NETBSD6, "netbsd6"},
};

__dead2 static  void    usage(void);

int
main(int argc, char **argv)
{
        int     ch, status;
        unsigned int    i;
        int     cflag, Cflag, Dflag, Uflag, wflag;
        char    *dir, *p;
        FILE    *spec1, *spec2;

        setprogname(argv[0]);

        cflag = Cflag = Dflag = Uflag = wflag = 0;
        dir = NULL;
        init_excludes();
        spec1 = stdin;
        spec2 = NULL;

        while ((ch = getopt(argc, argv,
            "bcCdDeE:f:F:I:ijk:K:lLmMnN:O:p:PqrR:s:StuUwWxX:"))
            != -1) {
                switch((char)ch) {
                case 'b':
                        bflag = 1;
                        break;
                case 'c':
                        cflag = 1;
                        break;
                case 'C':
                        Cflag = 1;
                        break;
                case 'd':
                        dflag = 1;
                        break;
                case 'D':
                        Dflag = 1;
                        break;
                case 'E':
                        parsetags(&excludetags, optarg);
                        break;
                case 'e':
                        eflag = 1;
                        break;
                case 'f':
                        if (spec1 == stdin) {
                                spec1 = fopen(optarg, "r");
                                if (spec1 == NULL)
                                        mtree_err("%s: %s", optarg,
                                            strerror(errno));
                        } else if (spec2 == NULL) {
                                spec2 = fopen(optarg, "r");
                                if (spec2 == NULL)
                                        mtree_err("%s: %s", optarg,
                                            strerror(errno));
                        } else
                                usage();
                        break;
                case 'F':
                        for (i = 0; i < NELEM(flavors); i++)
                                if (strcmp(optarg, flavors[i].name) == 0) {
                                        flavor = flavors[i].flavor;
                                        break;
                                }
                        if (i == NELEM(flavors))
                                usage();
                        break;
                case 'i':
                        iflag = 1;
                        break;
                case 'I':
                        parsetags(&includetags, optarg);
                        break;
                case 'j':
                        jflag = 1;
                        break;
                case 'k':
                        keys = F_TYPE;
                        while ((p = strsep(&optarg, " \t,")) != NULL)
                                if (*p != '\0')
                                        keys |= parsekey(p, NULL);
                        break;
                case 'K':
                        while ((p = strsep(&optarg, " \t,")) != NULL)
                                if (*p != '\0')
                                        keys |= parsekey(p, NULL);
                        break;
                case 'l':
                        lflag = 1;
                        break;
                case 'L':
                        ftsoptions &= ~FTS_PHYSICAL;
                        ftsoptions |= FTS_LOGICAL;
                        break;
                case 'm':
                        mflag = 1;
                        break;
                case 'M':
                        mtree_Mflag = 1;
                        break;
                case 'n':
                        nflag = 1;
                        break;
                case 'N':
#ifdef BOOTSTRAPPING
                        mtree_err("The -N is disabled in btools");
#else
                        if (! setup_getid(optarg))
                                mtree_err(
                            "Unable to use user and group databases in `%s'",
                                    optarg);
#endif
                        break;
                case 'O':
                        load_only(optarg);
                        break;
                case 'p':
                        dir = optarg;
                        break;
                case 'P':
                        ftsoptions &= ~FTS_LOGICAL;
                        ftsoptions |= FTS_PHYSICAL;
                        break;
                case 'q':
                        qflag = 1;
                        break;
                case 'r':
                        rflag++;
                        break;
                case 'R':
                        while ((p = strsep(&optarg, " \t,")) != NULL)
                                if (*p != '\0')
                                        keys &= ~parsekey(p, NULL);
                        break;
                case 's':
                        sflag = 1;
                        crc_total = ~strtol(optarg, &p, 0);
                        if (*p)
                                mtree_err("illegal seed value -- %s", optarg);
                        break;
                case 'S':
                        mtree_Sflag = 1;
                        break;
                case 't':
                        tflag = 1;
                        break;
                case 'u':
                        uflag = 1;
                        break;
                case 'U':
                        Uflag = uflag = 1;
                        break;
                case 'w':
                        wflag = 1;
                        break;
                case 'W':
                        mtree_Wflag = 1;
                        break;
                case 'x':
                        ftsoptions |= FTS_XDEV;
                        break;
                case 'X':
                        read_excludes_file(optarg);
                        break;
                case '?':
                default:
                        usage();
                }
        }
        argc -= optind;
        argv += optind;

        if (argc)
                usage();

        switch (flavor) {
        case F_FREEBSD9:
                if (cflag && iflag) {
                        warnx("-c and -i passed, replacing -i with -j for "
                            "FreeBSD compatibility");
                        iflag = 0;
                        jflag = 1;
                }
                if (dflag && !bflag) {
                        warnx("Adding -b to -d for FreeBSD compatibility");
                        bflag = 1;
                }
                if (uflag && !iflag) {
                        warnx("Adding -i to -%c for FreeBSD compatibility",
                            Uflag ? 'U' : 'u');
                        iflag = 1;
                }
                if (uflag && !tflag) {
                        warnx("Adding -t to -%c for FreeBSD compatibility",
                            Uflag ? 'U' : 'u');
                        tflag = 1;
                }
                if (wflag)
                        warnx("The -w flag is a no-op");
                break;
        default:
                if (wflag)
                        usage();
        }

        if (spec2 && (cflag || Cflag || Dflag))
                mtree_err("Double -f, -c, -C and -D flags are mutually "
                    "exclusive");

        if (dir && spec2)
                mtree_err("Double -f and -p flags are mutually exclusive");

        if (dir && chdir(dir))
                mtree_err("%s: %s", dir, strerror(errno));

        if ((cflag || sflag) && !getcwd(fullpath, sizeof(fullpath)))
                mtree_err("%s", strerror(errno));

        if ((cflag && Cflag) || (cflag && Dflag) || (Cflag && Dflag))
                mtree_err("-c, -C and -D flags are mutually exclusive");

        if (iflag && mflag)
                mtree_err("-i and -m flags are mutually exclusive");

        if (lflag && uflag)
                mtree_err("-l and -u flags are mutually exclusive");

        if (cflag) {
                cwalk(stdout);
                exit(0);
        }
        if (Cflag || Dflag) {
                dump_nodes(stdout, "", spec(spec1), Dflag);
                exit(0);
        }
        if (spec2 != NULL)
                status = mtree_specspec(spec1, spec2);
        else
                status = verify(spec1);
        if (Uflag && (status == MISMATCHEXIT))
                status = 0;
        exit(status);
}

static void
usage(void)
{
        unsigned int i;

        fprintf(stderr,
            "usage: %s [-bCcDdejLlMnPqrStUuWx] [-i|-m] [-E tags]\n"
            "\t\t[-f spec] [-f spec]\n"
            "\t\t[-I tags] [-K keywords] [-k keywords] [-N dbdir] [-p path]\n"
            "\t\t[-R keywords] [-s seed] [-X exclude-file]\n"
            "\t\t[-F flavor]\n",
            getprogname());
        fprintf(stderr, "\nflavors:");
        for (i = 0; i < NELEM(flavors); i++)
                fprintf(stderr, " %s", flavors[i].name);
        fprintf(stderr, "\n");
        exit(1);
}