664 lines
14 KiB
C
664 lines
14 KiB
C
/* $KAME: setkey.c,v 1.28 2003/06/27 07:15:45 itojun Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
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* All rights reserved.
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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. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/linker.h>
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#include <sys/module.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <err.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <net/pfkeyv2.h>
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#include <netipsec/keydb.h>
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#include <netipsec/key_debug.h>
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#include <netipsec/ipsec.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <string.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <errno.h>
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#include <netdb.h>
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#include "libpfkey.h"
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void usage(void);
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int main(int, char **);
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int get_supported(void);
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void sendkeyshort(u_int, uint8_t);
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void promisc(void);
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int sendkeymsg(char *, size_t);
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int postproc(struct sadb_msg *);
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const char *numstr(int);
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void shortdump_hdr(void);
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void shortdump(struct sadb_msg *);
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static void printdate(void);
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static int32_t gmt2local(time_t);
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static int modload(const char *name);
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#define MODE_SCRIPT 1
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#define MODE_CMDDUMP 2
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#define MODE_CMDFLUSH 3
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#define MODE_PROMISC 4
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static int so;
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static int f_forever = 0;
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static int f_all = 0;
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static int f_verbose = 0;
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static int f_mode = 0;
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static int f_cmddump = 0;
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static int f_policy = 0;
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static int f_hexdump = 0;
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static int f_tflag = 0;
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static int f_scope = 0;
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static time_t thiszone;
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extern int lineno;
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extern int parse(FILE **);
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void
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usage(void)
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{
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printf("usage: setkey [-v] -c\n");
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printf(" setkey [-v] -f filename\n");
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printf(" setkey [-v] -e \"<script>\"\n");
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printf(" setkey [-Pagltv] -D\n");
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printf(" setkey [-Pv] -F\n");
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printf(" setkey [-h] -x\n");
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exit(1);
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}
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static int
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modload(const char *name)
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{
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if (modfind(name) < 0)
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if (kldload(name) < 0 || modfind(name) < 0) {
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warn("%s: module not found", name);
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return 0;
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}
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return 1;
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}
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int
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main(int ac, char **av)
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{
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FILE *fp = stdin;
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int c;
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if (ac == 1) {
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usage();
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/* NOTREACHED */
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}
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thiszone = gmt2local(0);
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while ((c = getopt(ac, av, "acde:f:ghltvxDFP")) != -1) {
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switch (c) {
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case 'c':
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f_mode = MODE_SCRIPT;
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fp = stdin;
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break;
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case 'e':
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if (fp != stdin) {
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err(-1, "only one -f/-e option is accepted");
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}
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f_mode = MODE_SCRIPT;
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fp = fmemopen(optarg, strlen(optarg), "r");
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if (fp == NULL) {
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err(-1, "fmemopen");
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/*NOTREACHED*/
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}
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break;
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case 'f':
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if (fp != stdin) {
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err(-1, "only one -f/-e option is accepted");
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}
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f_mode = MODE_SCRIPT;
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if ((fp = fopen(optarg, "r")) == NULL) {
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err(-1, "fopen");
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/*NOTREACHED*/
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}
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break;
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case 'D':
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f_mode = MODE_CMDDUMP;
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break;
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case 'F':
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f_mode = MODE_CMDFLUSH;
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break;
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case 'a':
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f_all = 1;
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break;
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case 'l':
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f_forever = 1;
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break;
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case 'h':
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f_hexdump = 1;
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break;
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case 'x':
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f_mode = MODE_PROMISC;
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f_tflag++;
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break;
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case 'P':
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f_policy = 1;
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break;
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case 'g': /* global */
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f_scope |= IPSEC_POLICYSCOPE_GLOBAL;
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break;
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case 't': /* tunnel */
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f_scope |= IPSEC_POLICYSCOPE_IFNET;
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break;
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case 'v':
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f_verbose = 1;
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break;
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default:
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usage();
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/*NOTREACHED*/
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}
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}
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modload("ipsec");
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so = pfkey_open();
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if (so < 0) {
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perror("pfkey_open");
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exit(1);
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}
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switch (f_mode) {
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case MODE_CMDDUMP:
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sendkeyshort(f_policy ? SADB_X_SPDDUMP: SADB_DUMP,
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f_policy ? f_scope: SADB_SATYPE_UNSPEC);
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break;
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case MODE_CMDFLUSH:
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sendkeyshort(f_policy ? SADB_X_SPDFLUSH: SADB_FLUSH,
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SADB_SATYPE_UNSPEC);
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break;
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case MODE_SCRIPT:
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if (get_supported() < 0) {
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errx(-1, "%s", ipsec_strerror());
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/*NOTREACHED*/
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}
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if (parse(&fp))
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exit (1);
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break;
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case MODE_PROMISC:
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promisc();
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/*NOTREACHED*/
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default:
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usage();
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/*NOTREACHED*/
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}
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exit(0);
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}
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int
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get_supported(void)
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{
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if (pfkey_send_register(so, SADB_SATYPE_UNSPEC) < 0)
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return -1;
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if (pfkey_recv_register(so) < 0)
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return -1;
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return 0;
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}
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void
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sendkeyshort(u_int type, uint8_t satype)
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{
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struct sadb_msg msg;
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msg.sadb_msg_version = PF_KEY_V2;
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msg.sadb_msg_type = type;
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msg.sadb_msg_errno = 0;
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msg.sadb_msg_satype = satype;
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msg.sadb_msg_len = PFKEY_UNIT64(sizeof(msg));
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msg.sadb_msg_reserved = 0;
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msg.sadb_msg_seq = 0;
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msg.sadb_msg_pid = getpid();
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sendkeymsg((char *)&msg, sizeof(msg));
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return;
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}
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void
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promisc(void)
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{
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struct sadb_msg msg;
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u_char rbuf[1024 * 32]; /* XXX: Enough ? Should I do MSG_PEEK ? */
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ssize_t l;
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msg.sadb_msg_version = PF_KEY_V2;
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msg.sadb_msg_type = SADB_X_PROMISC;
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msg.sadb_msg_errno = 0;
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msg.sadb_msg_satype = 1;
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msg.sadb_msg_len = PFKEY_UNIT64(sizeof(msg));
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msg.sadb_msg_reserved = 0;
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msg.sadb_msg_seq = 0;
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msg.sadb_msg_pid = getpid();
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if ((l = send(so, &msg, sizeof(msg), 0)) < 0) {
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err(1, "send");
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/*NOTREACHED*/
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}
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while (1) {
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struct sadb_msg *base;
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if ((l = recv(so, rbuf, sizeof(*base), MSG_PEEK)) < 0) {
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err(1, "recv");
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/*NOTREACHED*/
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}
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if (l != sizeof(*base))
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continue;
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base = (struct sadb_msg *)rbuf;
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if ((l = recv(so, rbuf, PFKEY_UNUNIT64(base->sadb_msg_len),
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0)) < 0) {
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err(1, "recv");
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/*NOTREACHED*/
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}
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printdate();
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if (f_hexdump) {
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int i;
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for (i = 0; i < l; i++) {
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if (i % 16 == 0)
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printf("%08x: ", i);
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printf("%02x ", rbuf[i] & 0xff);
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if (i % 16 == 15)
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printf("\n");
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}
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if (l % 16)
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printf("\n");
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}
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/* adjust base pointer for promisc mode */
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if (base->sadb_msg_type == SADB_X_PROMISC) {
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if ((ssize_t)sizeof(*base) < l)
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base++;
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else
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base = NULL;
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}
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if (base) {
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kdebug_sadb(base);
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printf("\n");
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fflush(stdout);
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}
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}
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}
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int
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sendkeymsg(char *buf, size_t len)
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{
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u_char rbuf[1024 * 32]; /* XXX: Enough ? Should I do MSG_PEEK ? */
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ssize_t l;
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struct sadb_msg *msg;
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{
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struct timeval tv;
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tv.tv_sec = 1;
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tv.tv_usec = 0;
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if (setsockopt(so, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0) {
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perror("setsockopt");
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goto end;
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}
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}
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if (f_forever)
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shortdump_hdr();
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again:
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if (f_verbose) {
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kdebug_sadb((struct sadb_msg *)buf);
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printf("\n");
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}
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if (f_hexdump) {
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size_t i;
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for (i = 0; i < len; i++) {
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if (i % 16 == 0)
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printf("%08x: ", (u_int)i);
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printf("%02x ", buf[i] & 0xff);
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if (i % 16 == 15)
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printf("\n");
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}
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if (len % 16)
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printf("\n");
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}
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if ((l = send(so, buf, len, 0)) < 0) {
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perror("send");
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goto end;
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}
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msg = (struct sadb_msg *)rbuf;
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do {
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if ((l = recv(so, rbuf, sizeof(rbuf), 0)) < 0) {
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perror("recv");
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goto end;
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}
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if (PFKEY_UNUNIT64(msg->sadb_msg_len) != l) {
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warnx("invalid keymsg length");
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break;
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}
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if (f_verbose) {
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kdebug_sadb((struct sadb_msg *)rbuf);
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printf("\n");
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}
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if (postproc(msg) < 0)
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break;
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} while (msg->sadb_msg_errno || msg->sadb_msg_seq);
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if (f_forever) {
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fflush(stdout);
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sleep(1);
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goto again;
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}
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end:
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return(0);
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}
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int
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postproc(struct sadb_msg *msg)
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{
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if (msg->sadb_msg_errno != 0) {
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char inf[80];
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const char *errmsg = NULL;
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if (f_mode == MODE_SCRIPT)
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snprintf(inf, sizeof(inf), "The result of line %d: ", lineno);
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else
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inf[0] = '\0';
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switch (msg->sadb_msg_errno) {
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case ENOENT:
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switch (msg->sadb_msg_type) {
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case SADB_DELETE:
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case SADB_GET:
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case SADB_X_SPDDELETE:
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errmsg = "No entry";
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break;
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case SADB_DUMP:
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errmsg = "No SAD entries";
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break;
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case SADB_X_SPDDUMP:
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errmsg = "No SPD entries";
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break;
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}
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break;
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default:
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errmsg = strerror(msg->sadb_msg_errno);
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}
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printf("%s%s.\n", inf, errmsg);
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return(-1);
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}
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switch (msg->sadb_msg_type) {
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case SADB_GET:
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pfkey_sadump(msg);
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break;
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case SADB_DUMP:
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/* filter out DEAD SAs */
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if (!f_all) {
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caddr_t mhp[SADB_EXT_MAX + 1];
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struct sadb_sa *sa;
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pfkey_align(msg, mhp);
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pfkey_check(mhp);
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if ((sa = (struct sadb_sa *)mhp[SADB_EXT_SA]) != NULL) {
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if (sa->sadb_sa_state == SADB_SASTATE_DEAD)
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break;
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}
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}
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if (f_forever)
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shortdump(msg);
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else
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pfkey_sadump(msg);
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msg = (struct sadb_msg *)((caddr_t)msg +
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PFKEY_UNUNIT64(msg->sadb_msg_len));
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if (f_verbose) {
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kdebug_sadb((struct sadb_msg *)msg);
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printf("\n");
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}
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break;
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case SADB_X_SPDDUMP:
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pfkey_spdump(msg);
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if (msg->sadb_msg_seq == 0) break;
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msg = (struct sadb_msg *)((caddr_t)msg +
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PFKEY_UNUNIT64(msg->sadb_msg_len));
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if (f_verbose) {
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kdebug_sadb((struct sadb_msg *)msg);
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printf("\n");
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}
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break;
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}
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|
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return(0);
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}
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|
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/*------------------------------------------------------------*/
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static const char *satype[] = {
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NULL, NULL, "ah", "esp"
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};
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static const char *sastate[] = {
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"L", "M", "D", "d"
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};
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static const char *ipproto[] = {
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/*0*/ "ip", "icmp", "igmp", "ggp", "ip4",
|
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NULL, "tcp", NULL, "egp", NULL,
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/*10*/ NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, "udp", NULL, NULL,
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/*20*/ NULL, NULL, "idp", NULL, NULL,
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NULL, NULL, NULL, NULL, "tp",
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/*30*/ NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL,
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/*40*/ NULL, "ip6", NULL, "rt6", "frag6",
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NULL, "rsvp", "gre", NULL, NULL,
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/*50*/ "esp", "ah", NULL, NULL, NULL,
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NULL, NULL, NULL, "icmp6", "none",
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/*60*/ "dst6",
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};
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|
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#define STR_OR_ID(x, tab) \
|
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(((x) < sizeof(tab)/sizeof(tab[0]) && tab[(x)]) ? tab[(x)] : numstr(x))
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|
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const char *
|
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numstr(int x)
|
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{
|
|
static char buf[20];
|
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snprintf(buf, sizeof(buf), "#%d", x);
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return buf;
|
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}
|
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|
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void
|
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shortdump_hdr(void)
|
|
{
|
|
printf("%-4s %-3s %-1s %-8s %-7s %s -> %s\n",
|
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"time", "p", "s", "spi", "ltime", "src", "dst");
|
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}
|
|
|
|
void
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shortdump(struct sadb_msg *msg)
|
|
{
|
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caddr_t mhp[SADB_EXT_MAX + 1];
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char buf[NI_MAXHOST], pbuf[NI_MAXSERV];
|
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struct sadb_sa *sa;
|
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struct sadb_address *saddr;
|
|
struct sadb_lifetime *lts, *lth, *ltc;
|
|
struct sockaddr *s;
|
|
u_int t;
|
|
time_t cur = time(0);
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|
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pfkey_align(msg, mhp);
|
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pfkey_check(mhp);
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|
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printf("%02lu%02lu", (u_long)(cur % 3600) / 60, (u_long)(cur % 60));
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|
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printf(" %-3s", STR_OR_ID(msg->sadb_msg_satype, satype));
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|
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if ((sa = (struct sadb_sa *)mhp[SADB_EXT_SA]) != NULL) {
|
|
printf(" %-1s", STR_OR_ID(sa->sadb_sa_state, sastate));
|
|
printf(" %08x", (u_int32_t)ntohl(sa->sadb_sa_spi));
|
|
} else
|
|
printf("%-1s %-8s", "?", "?");
|
|
|
|
lts = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_SOFT];
|
|
lth = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_HARD];
|
|
ltc = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_CURRENT];
|
|
if (lts && lth && ltc) {
|
|
if (ltc->sadb_lifetime_addtime == 0)
|
|
t = (u_long)0;
|
|
else
|
|
t = (u_long)(cur - ltc->sadb_lifetime_addtime);
|
|
if (t >= 1000)
|
|
strlcpy(buf, " big/", sizeof(buf));
|
|
else
|
|
snprintf(buf, sizeof(buf), " %3lu/", (u_long)t);
|
|
printf("%s", buf);
|
|
|
|
t = (u_long)lth->sadb_lifetime_addtime;
|
|
if (t >= 1000)
|
|
strlcpy(buf, "big", sizeof(buf));
|
|
else
|
|
snprintf(buf, sizeof(buf), "%-3lu", (u_long)t);
|
|
printf("%s", buf);
|
|
} else
|
|
printf(" ??\?/???"); /* backslash to avoid trigraph ??/ */
|
|
|
|
printf(" ");
|
|
|
|
if ((saddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_SRC]) != NULL) {
|
|
if (saddr->sadb_address_proto)
|
|
printf("%s ", STR_OR_ID(saddr->sadb_address_proto, ipproto));
|
|
s = (struct sockaddr *)(saddr + 1);
|
|
getnameinfo(s, s->sa_len, buf, sizeof(buf),
|
|
pbuf, sizeof(pbuf), NI_NUMERICHOST|NI_NUMERICSERV);
|
|
if (strcmp(pbuf, "0") != 0)
|
|
printf("%s[%s]", buf, pbuf);
|
|
else
|
|
printf("%s", buf);
|
|
} else
|
|
printf("?");
|
|
|
|
printf(" -> ");
|
|
|
|
if ((saddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_DST]) != NULL) {
|
|
if (saddr->sadb_address_proto)
|
|
printf("%s ", STR_OR_ID(saddr->sadb_address_proto, ipproto));
|
|
|
|
s = (struct sockaddr *)(saddr + 1);
|
|
getnameinfo(s, s->sa_len, buf, sizeof(buf),
|
|
pbuf, sizeof(pbuf), NI_NUMERICHOST|NI_NUMERICSERV);
|
|
if (strcmp(pbuf, "0") != 0)
|
|
printf("%s[%s]", buf, pbuf);
|
|
else
|
|
printf("%s", buf);
|
|
} else
|
|
printf("?");
|
|
|
|
printf("\n");
|
|
}
|
|
|
|
/* From: tcpdump(1):gmt2local.c and util.c */
|
|
/*
|
|
* Print the timestamp
|
|
*/
|
|
static void
|
|
printdate(void)
|
|
{
|
|
struct timeval tp;
|
|
int s;
|
|
|
|
if (gettimeofday(&tp, NULL) == -1) {
|
|
perror("gettimeofday");
|
|
return;
|
|
}
|
|
|
|
if (f_tflag == 1) {
|
|
/* Default */
|
|
s = (tp.tv_sec + thiszone ) % 86400;
|
|
(void)printf("%02d:%02d:%02d.%06u ",
|
|
s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tp.tv_usec);
|
|
} else if (f_tflag > 1) {
|
|
/* Unix timeval style */
|
|
(void)printf("%u.%06u ",
|
|
(u_int32_t)tp.tv_sec, (u_int32_t)tp.tv_usec);
|
|
}
|
|
|
|
printf("\n");
|
|
}
|
|
|
|
/*
|
|
* Returns the difference between gmt and local time in seconds.
|
|
* Use gmtime() and localtime() to keep things simple.
|
|
*/
|
|
int32_t
|
|
gmt2local(time_t t)
|
|
{
|
|
register int dt, dir;
|
|
register struct tm *gmt, *loc;
|
|
struct tm sgmt;
|
|
|
|
if (t == 0)
|
|
t = time(NULL);
|
|
gmt = &sgmt;
|
|
*gmt = *gmtime(&t);
|
|
loc = localtime(&t);
|
|
dt = (loc->tm_hour - gmt->tm_hour) * 60 * 60 +
|
|
(loc->tm_min - gmt->tm_min) * 60;
|
|
|
|
/*
|
|
* If the year or julian day is different, we span 00:00 GMT
|
|
* and must add or subtract a day. Check the year first to
|
|
* avoid problems when the julian day wraps.
|
|
*/
|
|
dir = loc->tm_year - gmt->tm_year;
|
|
if (dir == 0)
|
|
dir = loc->tm_yday - gmt->tm_yday;
|
|
dt += dir * 24 * 60 * 60;
|
|
|
|
return (dt);
|
|
}
|