751 lines
18 KiB
C
751 lines
18 KiB
C
/*-
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* Copyright (c) 2002 Poul-Henning Kamp
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Poul-Henning Kamp
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* and NAI Labs, the Security Research Division of Network Associates, Inc.
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* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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* DARPA CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/mutex.h>
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#include <md5.h>
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#include <readpassphrase.h>
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#include <string.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <strings.h>
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#include <stdlib.h>
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#include <err.h>
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#include <stdio.h>
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#include <libutil.h>
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#include <sys/errno.h>
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#include <sys/disk.h>
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#include <crypto/rijndael/rijndael.h>
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#include <geom/geom.h>
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#include <geom/bde/g_bde.h>
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extern const char template[];
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static void __dead2
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usage(const char *reason)
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{
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const char *p;
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p = getprogname();
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fprintf(stderr, "Usage error: %s", reason);
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fprintf(stderr, "Usage:\n");
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fprintf(stderr, "\t%s attach dest -l filename\n", p);
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fprintf(stderr, "\t%s dettach dest\n", p);
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fprintf(stderr, "\t%s init dest [-i] [-f filename] -l filename\n", p);
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fprintf(stderr, "\t%s setkey dest [-n key] -l filename\n", p);
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fprintf(stderr, "\t%s destroy dest [-n key] -l filename\n", p);
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exit (1);
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}
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void *
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g_read_data(struct g_consumer *cp, off_t offset, off_t length, int *error)
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{
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void *p;
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int fd, i;
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off_t o2;
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p = malloc(length);
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if (p == NULL)
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err(1, "malloc");
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fd = *(int *)cp;
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o2 = lseek(fd, offset, SEEK_SET);
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if (o2 != offset)
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err(1, "lseek");
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i = read(fd, p, length);
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if (i != length)
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err(1, "read");
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if (error != NULL)
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error = 0;
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return (p);
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}
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static void
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random_bits(void *p, u_int len)
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{
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static int fdr = -1;
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int i;
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if (fdr < 0) {
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fdr = open("/dev/urandom", O_RDONLY);
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if (fdr < 0)
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err(1, "/dev/urandom");
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}
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i = read(fdr, p, len);
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if (i != (int)len)
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err(1, "read from /dev/urandom");
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}
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/* XXX: not nice */
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static u_char sbox[256];
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static void
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reset_passphrase(struct g_bde_softc *sc)
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{
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memcpy(sc->arc4_sbox, sbox, 256);
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sc->arc4_i = sc->arc4_j = 0;
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}
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static void
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setup_passphrase(struct g_bde_softc *sc, int sure, const char *input)
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{
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char buf1[BUFSIZ], buf2[BUFSIZ], *p;
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if (input != NULL) {
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g_bde_arc4_seed(sc, input, strlen(input));
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memcpy(sbox, sc->arc4_sbox, 256);
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return;
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}
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for (;;) {
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p = readpassphrase(
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sure ? "Enter new passphrase:" : "Enter passphrase: ",
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buf1, sizeof buf1,
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RPP_ECHO_OFF | RPP_REQUIRE_TTY);
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if (p == NULL)
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err(1, "readpassphrase");
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if (sure) {
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p = readpassphrase("Reenter new passphrase: ",
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buf2, sizeof buf2,
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RPP_ECHO_OFF | RPP_REQUIRE_TTY);
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if (p == NULL)
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err(1, "readpassphrase");
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if (strcmp(buf1, buf2)) {
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printf("They didn't match.\n");
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continue;
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}
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}
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if (strlen(buf1) < 3) {
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printf("Too short passphrase.\n");
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continue;
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}
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break;
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}
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g_bde_arc4_seed(sc, buf1, strlen(buf1));
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memcpy(sbox, sc->arc4_sbox, 256);
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}
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static void
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encrypt_sector(void *d, int len, void *key)
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{
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keyInstance ki;
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cipherInstance ci;
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int error;
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error = rijndael_cipherInit(&ci, MODE_CBC, NULL);
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if (error <= 0)
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errx(1, "rijndael_cipherInit=%d", error);
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error = rijndael_makeKey(&ki, DIR_ENCRYPT, 128, key);
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if (error <= 0)
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errx(1, "rijndael_makeKeY=%d", error);
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error = rijndael_blockEncrypt(&ci, &ki, d, len * 8, d);
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if (error <= 0)
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errx(1, "rijndael_blockEncrypt=%d", error);
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}
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static void
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cmd_attach(const struct g_bde_softc *sc, const char *dest, const char *lfile)
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{
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int gfd, i, ffd;
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struct geomconfiggeom gcg;
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u_char buf[256 + 16];
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gfd = open("/dev/geom.ctl", O_RDWR);
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if (gfd < 0)
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err(1, "/dev/geom.ctl");
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memset(&gcg, 0, sizeof gcg);
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gcg.class.u.name = "BDE";
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gcg.class.len = strlen(gcg.class.u.name);
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gcg.provider.u.name = dest;
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gcg.provider.len = strlen(gcg.provider.u.name);
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gcg.flag = 0;
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gcg.len = sizeof buf;
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gcg.ptr = buf;
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if (lfile != NULL) {
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ffd = open(lfile, O_RDONLY, 0);
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if (ffd < 0)
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err(1, lfile);
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read(ffd, buf + 256, 16);
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close(ffd);
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} else {
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memset(buf + 256, 0, 16);
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}
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memcpy(buf, sc->arc4_sbox, 256);
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i = ioctl(gfd, GEOMCONFIGGEOM, &gcg);
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if (i != 0)
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err(1, "ioctl(GEOMCONFIGGEOM)");
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exit (0);
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}
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static void
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cmd_dettach(const char *dest)
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{
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int i, gfd;
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struct geomconfiggeom gcg;
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gfd = open("/dev/geom.ctl", O_RDWR);
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if (gfd < 0)
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err(1, "/dev/geom.ctl");
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memset(&gcg, 0, sizeof gcg);
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gcg.class.u.name = "BDE";
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gcg.class.len = strlen(gcg.class.u.name);
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gcg.provider.u.name = dest;
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gcg.provider.len = strlen(gcg.provider.u.name);
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gcg.flag = 1;
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i = ioctl(gfd, GEOMCONFIGGEOM, &gcg);
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if (i != 0)
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err(1, "ioctl(GEOMCONFIGGEOM)");
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exit (0);
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}
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static void
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cmd_open(struct g_bde_softc *sc, int dfd __unused, const char *l_opt, u_int *nkey)
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{
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int error;
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int ffd;
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u_char keyloc[16];
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if (l_opt != NULL) {
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ffd = open(l_opt, O_RDONLY, 0);
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if (ffd < 0)
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err(1, l_opt);
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read(ffd, keyloc, sizeof keyloc);
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close(ffd);
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} else {
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memset(keyloc, 0, sizeof keyloc);
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}
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error = g_bde_decrypt_lock(sc, sbox, keyloc, 0xffffffff,
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512, nkey);
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if (error == ENOENT)
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errx(1, "Lock was destroyed.");
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if (error == ESRCH)
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errx(1, "Lock was nuked.");
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if (error == ENOTDIR)
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errx(1, "Lock not found");
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if (error != 0)
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errx(1, "Error %d decrypting lock", error);
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if (nkey)
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printf("Opened with key %u\n", *nkey);
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return;
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}
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static void
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cmd_nuke(struct g_bde_key *gl, int dfd , int key)
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{
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int i;
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u_char *sbuf;
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off_t offset, offset2;
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sbuf = malloc(gl->sectorsize);
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memset(sbuf, 0, gl->sectorsize);
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offset = (gl->lsector[key] & ~(gl->sectorsize - 1));
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offset2 = lseek(dfd, offset, SEEK_SET);
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if (offset2 != offset)
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err(1, "lseek");
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i = write(dfd, sbuf, gl->sectorsize);
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if (i != (int)gl->sectorsize)
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err(1, "write");
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printf("Nuked key %d\n", key);
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}
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static void
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cmd_write(struct g_bde_key *gl, struct g_bde_softc *sc, int dfd , int key, const char *l_opt)
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{
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char buf[BUFSIZ];
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int i, ffd;
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uint64_t off[2];
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u_char keyloc[16];
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u_char *sbuf, *q;
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MD5_CTX c;
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off_t offset, offset2;
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sbuf = malloc(gl->sectorsize);
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/*
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* Find the byte-offset in the lock sector where we will put the lock
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* data structure. We can put it any random place as long as the
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* structure fits.
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*/
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for(;;) {
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random_bits(off, sizeof off);
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off[0] &= (gl->sectorsize - 1);
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if (off[0] + G_BDE_LOCKSIZE > gl->sectorsize)
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continue;
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break;
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}
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/* Add the sector offset in bytes */
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off[0] += (gl->lsector[key] & ~(gl->sectorsize - 1));
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gl->lsector[key] = off[0];
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i = g_bde_keyloc_encrypt(sc, off, keyloc);
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if (i)
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errx(1, "g_bde_keyloc_encrypt()");
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if (l_opt != NULL) {
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ffd = open(l_opt, O_WRONLY | O_CREAT | O_TRUNC, 0600);
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if (ffd < 0)
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err(1, l_opt);
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write(ffd, keyloc, sizeof keyloc);
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close(ffd);
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} else if (gl->flags & 1) {
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offset2 = lseek(dfd, 0, SEEK_SET);
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if (offset2 != 0)
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err(1, "lseek");
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i = read(dfd, sbuf, gl->sectorsize);
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if (i != (int)gl->sectorsize)
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err(1, "read");
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memcpy(sbuf + key * 16, keyloc, sizeof keyloc);
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offset2 = lseek(dfd, 0, SEEK_SET);
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if (offset2 != 0)
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err(1, "lseek");
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i = write(dfd, sbuf, gl->sectorsize);
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if (i != (int)gl->sectorsize)
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err(1, "write");
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} else {
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errx(1, "No -L option and no space in sector 0 for lockfile");
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}
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/* Allocate a sectorbuffer and fill it with random junk */
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if (sbuf == NULL)
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err(1, "malloc");
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random_bits(sbuf, gl->sectorsize);
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/* Fill in the hash field with something we can recognize again */
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g_bde_arc4_seq(sc, buf, 16);
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MD5Init(&c);
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MD5Update(&c, "0000", 4); /* XXX: for future versioning */
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MD5Update(&c, buf, 16);
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MD5Final(gl->hash, &c);
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/* Fill random bits in the spare field */
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random_bits(gl->spare, sizeof(gl->spare));
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/* Encode the structure where we want it */
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q = sbuf + (off[0] % gl->sectorsize);
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g_bde_encode_lock(gl, q);
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/*
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* The encoded structure likely contains long sequences of zeros
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* which stick out as a sore thumb, so we XOR with key-material
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* to make it harder to recognize in a brute-force attack
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*/
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g_bde_arc4_seq(sc, buf, G_BDE_LOCKSIZE);
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for (i = 0; i < G_BDE_LOCKSIZE; i++)
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q[i] ^= buf[i];
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g_bde_arc4_seq(sc, buf, 16);
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encrypt_sector(q, G_BDE_LOCKSIZE, buf);
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offset = gl->lsector[key] & ~(gl->sectorsize - 1);
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offset2 = lseek(dfd, offset, SEEK_SET);
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if (offset2 != offset)
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err(1, "lseek");
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i = write(dfd, sbuf, gl->sectorsize);
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if (i != (int)gl->sectorsize)
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err(1, "write");
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printf("Wrote key %d at %jd\n", key, (intmax_t)offset);
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}
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static void
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cmd_destroy(struct g_bde_key *gl, int nkey)
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{
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int i;
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bzero(&gl->sector0, sizeof gl->sector0);
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bzero(&gl->sectorN, sizeof gl->sectorN);
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bzero(&gl->keyoffset, sizeof gl->keyoffset);
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bzero(&gl->flags, sizeof gl->flags);
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bzero(gl->key, sizeof gl->key);
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for (i = 0; i < G_BDE_MAXKEYS; i++)
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if (i != nkey)
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gl->lsector[i] = ~0;
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}
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static void
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cmd_init(struct g_bde_key *gl, int dfd, const char *f_opt, int i_opt, const char *l_opt)
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{
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int i;
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u_char *buf;
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unsigned sector_size;
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uint64_t first_sector;
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uint64_t last_sector;
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uint64_t total_sectors;
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off_t off, off2;
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unsigned nkeys;
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const char *p;
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char *q, cbuf[BUFSIZ];
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unsigned u, u2;
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uint64_t o;
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properties params;
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bzero(gl, sizeof *gl);
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if (f_opt != NULL) {
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i = open(f_opt, O_RDONLY);
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if (i < 0)
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err(1, f_opt);
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params = properties_read(i);
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close (i);
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} else {
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/* XXX: Polish */
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q = strdup("/tmp/temp.XXXXXXXXXX");
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i = mkstemp(q);
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if (i < 0)
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err(1, q);
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write(i, template, strlen(template));
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close (i);
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if (i_opt) {
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p = getenv("EDITOR");
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if (p == NULL)
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p = "vi";
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sprintf(cbuf, "%s %s\n", p, q);
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system(cbuf);
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}
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i = open(q, O_RDONLY);
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if (i < 0)
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err(1, f_opt);
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params = properties_read(i);
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close (i);
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unlink(q);
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}
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/* <sector_size> */
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p = property_find(params, "sector_size");
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i = ioctl(dfd, DIOCGSECTORSIZE, &u);
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if (i == 0)
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sector_size = u;
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else if (p == NULL)
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errx(1, "Missing sector_size property");
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if (p != NULL) {
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sector_size = strtoul(p, &q, 0);
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if (!*p || *q)
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errx(1, "sector_size not a proper number");
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}
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if (sector_size & (sector_size - 1))
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errx(1, "sector_size not a power of 2");
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if (sector_size < 512)
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errx(1, "sector_size is smaller than 512");
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buf = malloc(sector_size);
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if (buf == NULL)
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err(1, "Failed to malloc sector buffer");
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gl->sectorsize = sector_size;
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i = ioctl(dfd, DIOCGMEDIASIZE, &off);
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if (i == 0) {
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first_sector = 0;
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total_sectors = off / sector_size;
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last_sector = total_sectors - 1;
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} else {
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first_sector = 0;
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last_sector = 0;
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total_sectors = 0;
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}
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/* <first_sector> */
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p = property_find(params, "first_sector");
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if (p != NULL) {
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first_sector = strtoul(p, &q, 0);
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if (!*p || *q)
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errx(1, "first_sector not a proper number");
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}
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gl->sector0 = first_sector * gl->sectorsize;
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/* <last_sector> */
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p = property_find(params, "last_sector");
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if (p != NULL) {
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last_sector = strtoul(p, &q, 0);
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if (!*p || *q)
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errx(1, "last_sector not a proper number");
|
|
if (last_sector <= first_sector)
|
|
errx(1, "last_sector not larger than first_sector");
|
|
total_sectors = last_sector + 1;
|
|
}
|
|
|
|
/* <total_sectors> */
|
|
p = property_find(params, "total_sectors");
|
|
if (p != NULL) {
|
|
total_sectors = strtoul(p, &q, 0);
|
|
if (!*p || *q)
|
|
errx(1, "total_sectors not a proper number");
|
|
if (last_sector == 0)
|
|
last_sector = first_sector + total_sectors - 1;
|
|
}
|
|
|
|
if (l_opt == NULL && first_sector != 0)
|
|
errx(1, "No -L new-lockfile argument and first_sector != 0");
|
|
else if (l_opt == NULL) {
|
|
first_sector++;
|
|
total_sectors--;
|
|
gl->flags |= 1;
|
|
}
|
|
|
|
if (total_sectors != (last_sector - first_sector) + 1)
|
|
errx(1, "total_sectors disagree with first_sector and last_sector");
|
|
if (total_sectors == 0)
|
|
errx(1, "missing last_sector or total_sectors");
|
|
|
|
gl->sectorN = (last_sector + 1) * gl->sectorsize;
|
|
|
|
/* Find a random keyoffset */
|
|
random_bits(&o, sizeof o);
|
|
o %= (gl->sectorN - gl->sector0);
|
|
o &= ~(gl->sectorsize - 1);
|
|
gl->keyoffset = o;
|
|
|
|
/* <number_of_keys> */
|
|
p = property_find(params, "number_of_keys");
|
|
if (p == NULL)
|
|
errx(1, "Missing number_of_keys property");
|
|
nkeys = strtoul(p, &q, 0);
|
|
if (!*p || *q)
|
|
errx(1, "number_of_keys not a proper number");
|
|
if (nkeys < 1 || nkeys > G_BDE_MAXKEYS)
|
|
errx(1, "number_of_keys out of range");
|
|
for (u = 0; u < nkeys; u++) {
|
|
for(;;) {
|
|
do {
|
|
random_bits(&o, sizeof o);
|
|
o %= gl->sectorN;
|
|
o &= ~(gl->sectorsize - 1);
|
|
} while(o < gl->sector0);
|
|
for (u2 = 0; u2 < u; u2++)
|
|
if (o == gl->lsector[u2])
|
|
break;
|
|
if (u2 < u)
|
|
continue;
|
|
break;
|
|
}
|
|
gl->lsector[u] = o;
|
|
}
|
|
for (; u < G_BDE_MAXKEYS; u++) {
|
|
do
|
|
random_bits(&o, sizeof o);
|
|
while (o < gl->sectorN);
|
|
gl->lsector[u] = o;
|
|
}
|
|
|
|
/* Flush sector zero if we use it for lockfile data */
|
|
if (gl->flags & 1) {
|
|
off2 = lseek(dfd, 0, SEEK_SET);
|
|
if (off2 != 0)
|
|
err(1, "lseek(2) to sector 0");
|
|
random_bits(buf, sector_size);
|
|
i = write(dfd, buf, sector_size);
|
|
if (i != (int)sector_size)
|
|
err(1, "write sector 0");
|
|
}
|
|
|
|
/* <random_flush> */
|
|
p = property_find(params, "random_flush");
|
|
if (p != NULL) {
|
|
off = first_sector * sector_size;
|
|
off2 = lseek(dfd, off, SEEK_SET);
|
|
if (off2 != off)
|
|
err(1, "lseek(2) to first_sector");
|
|
off2 = last_sector * sector_size;
|
|
while (off <= off2) {
|
|
random_bits(buf, sector_size);
|
|
i = write(dfd, buf, sector_size);
|
|
if (i != (int)sector_size)
|
|
err(1, "write to $device_name");
|
|
off += sector_size;
|
|
}
|
|
}
|
|
|
|
random_bits(gl->key, sizeof gl->key);
|
|
|
|
return;
|
|
}
|
|
|
|
static enum action {
|
|
ACT_HUH,
|
|
ACT_ATTACH, ACT_DETTACH,
|
|
ACT_INIT, ACT_SETKEY, ACT_DESTROY, ACT_NUKE
|
|
} action;
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
const char *opts;
|
|
const char *l_opt, *L_opt;
|
|
const char *p_opt, *P_opt;
|
|
const char *f_opt;
|
|
const char *dest;
|
|
int i_opt, n_opt, ch, dfd, nkey, doopen;
|
|
int i;
|
|
char *q;
|
|
struct g_bde_key *gl;
|
|
struct g_bde_softc sc;
|
|
|
|
if (argc < 3)
|
|
usage("Too few arguments\n");
|
|
|
|
doopen = 0;
|
|
if (!strcmp(argv[1], "attach")) {
|
|
action = ACT_ATTACH;
|
|
opts = "l:p:";
|
|
} else if (!strcmp(argv[1], "dettach")) {
|
|
action = ACT_DETTACH;
|
|
opts = "";
|
|
} else if (!strcmp(argv[1], "init")) {
|
|
action = ACT_INIT;
|
|
doopen = 1;
|
|
opts = "f:iL:P:";
|
|
} else if (!strcmp(argv[1], "setkey")) {
|
|
action = ACT_SETKEY;
|
|
doopen = 1;
|
|
opts = "n:l:L:p:P:";
|
|
} else if (!strcmp(argv[1], "destroy")) {
|
|
action = ACT_DESTROY;
|
|
doopen = 1;
|
|
opts = "l:p:";
|
|
} else if (!strcmp(argv[1], "nuke")) {
|
|
action = ACT_NUKE;
|
|
doopen = 1;
|
|
opts = "l:p:n:";
|
|
} else {
|
|
usage("Unknown sub command\n");
|
|
}
|
|
argc--;
|
|
argv++;
|
|
|
|
dest = argv[1];
|
|
argc--;
|
|
argv++;
|
|
|
|
p_opt = NULL;
|
|
P_opt = NULL;
|
|
l_opt = NULL;
|
|
L_opt = NULL;
|
|
f_opt = NULL;
|
|
n_opt = 0;
|
|
i_opt = 0;
|
|
|
|
while((ch = getopt(argc, argv, opts)) != -1)
|
|
switch (ch) {
|
|
case 'f':
|
|
f_opt = optarg;
|
|
break;
|
|
case 'i':
|
|
i_opt = !i_opt;
|
|
case 'l':
|
|
l_opt = optarg;
|
|
break;
|
|
case 'L':
|
|
L_opt = optarg;
|
|
break;
|
|
case 'p':
|
|
p_opt = optarg;
|
|
break;
|
|
case 'P':
|
|
P_opt = optarg;
|
|
break;
|
|
case 'n':
|
|
n_opt = strtoul(optarg, &q, 0);
|
|
if (!*optarg || *q)
|
|
usage("-n argument not numeric\n");
|
|
if (n_opt < -1 || n_opt > G_BDE_MAXKEYS)
|
|
usage("-n argument out of range\n");
|
|
break;
|
|
default:
|
|
usage("Invalid option\n");
|
|
}
|
|
|
|
if (doopen) {
|
|
dfd = open(dest, O_RDWR | O_CREAT, 0644);
|
|
if (dfd < 0)
|
|
err(1, dest);
|
|
}
|
|
|
|
memset(&sc, 0, sizeof sc);
|
|
sc.consumer = (struct g_consumer *)&dfd;
|
|
gl = &sc.key;
|
|
switch(action) {
|
|
case ACT_ATTACH:
|
|
setup_passphrase(&sc, 0, p_opt);
|
|
cmd_attach(&sc, dest, l_opt);
|
|
break;
|
|
case ACT_DETTACH:
|
|
cmd_dettach(dest);
|
|
break;
|
|
case ACT_INIT:
|
|
cmd_init(gl, dfd, f_opt, i_opt, L_opt);
|
|
setup_passphrase(&sc, 1, P_opt);
|
|
cmd_write(gl, &sc, dfd, 0, L_opt);
|
|
break;
|
|
case ACT_SETKEY:
|
|
setup_passphrase(&sc, 0, p_opt);
|
|
cmd_open(&sc, dfd, l_opt, &nkey);
|
|
if (n_opt == 0)
|
|
n_opt = nkey + 1;
|
|
setup_passphrase(&sc, 1, P_opt);
|
|
cmd_write(gl, &sc, dfd, n_opt - 1, L_opt);
|
|
break;
|
|
case ACT_DESTROY:
|
|
setup_passphrase(&sc, 0, p_opt);
|
|
cmd_open(&sc, dfd, l_opt, &nkey);
|
|
cmd_destroy(gl, nkey);
|
|
reset_passphrase(&sc);
|
|
cmd_write(gl, &sc, dfd, nkey, l_opt);
|
|
break;
|
|
case ACT_NUKE:
|
|
setup_passphrase(&sc, 0, p_opt);
|
|
cmd_open(&sc, dfd, l_opt, &nkey);
|
|
if (n_opt == 0)
|
|
n_opt = nkey + 1;
|
|
if (n_opt == -1) {
|
|
for(i = 0; i < G_BDE_MAXKEYS; i++)
|
|
cmd_nuke(gl, dfd, i);
|
|
} else {
|
|
cmd_nuke(gl, dfd, n_opt - 1);
|
|
}
|
|
break;
|
|
default:
|
|
usage("Internal error\n");
|
|
}
|
|
|
|
return(0);
|
|
}
|