567 lines
12 KiB
C
567 lines
12 KiB
C
/*
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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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* $FreeBSD$
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*/
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/* KAME $Id: setkey.c,v 1.5 1999/10/26 09:39:37 sakane Exp $ */
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#include <sys/types.h>
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#include <sys/param.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 <netkey/keydb.h>
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#include <netkey/key_debug.h>
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#include <netinet6/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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void Usage __P((void));
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int main __P((int, char **));
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int get_supported __P((void));
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void sendkeyshort __P((u_int));
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void promisc __P((void));
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int sendkeymsg __P((void));
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int postproc __P((struct sadb_msg *, int));
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const char *numstr __P((int));
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void shortdump_hdr __P((void));
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void shortdump __P((struct sadb_msg *));
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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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int so;
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int f_forever = 0;
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int f_all = 0;
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int f_debug = 0;
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int f_verbose = 0;
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int f_mode = 0;
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int f_cmddump = 0;
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int f_policy = 0;
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int f_promisc = 0;
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int f_hexdump = 0;
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char *pname;
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u_char m_buf[BUFSIZ];
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u_int m_len;
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extern int lineno;
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extern int parse __P((FILE **));
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void
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Usage()
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{
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printf("Usage:\t%s [-dv] -c\n", pname);
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printf("\t%s [-dv] -f (file)\n", pname);
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printf("\t%s [-Padlv] -D\n", pname);
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printf("\t%s [-Pdv] -F\n", pname);
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printf("\t%s [-h] -x\n", pname);
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pfkey_close(so);
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exit(0);
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}
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int
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main(ac, av)
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int ac;
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char **av;
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{
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FILE *fp = stdin;
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int c;
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pname = *av;
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if (ac == 1) Usage();
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while ((c = getopt(ac, av, "acdf:hlvxDFP")) != EOF) {
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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 'f':
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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_promisc = 1;
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promisc();
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/*NOTREACHED*/
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case 'P':
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f_policy = 1;
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break;
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case 'd':
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f_debug = 1;
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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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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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break;
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case MODE_CMDFLUSH:
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sendkeyshort(f_policy ? SADB_X_SPDFLUSH: SADB_FLUSH);
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pfkey_close(so);
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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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parse(&fp);
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break;
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default:
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Usage();
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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()
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{
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int so;
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if ((so = pfkey_open()) < 0) {
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perror("pfkey_open");
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return -1;
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}
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/* debug mode ? */
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if (f_debug)
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return 0;
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if (pfkey_send_register(so, PF_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(type)
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u_int type;
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{
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struct sadb_msg *m_msg = (struct sadb_msg *)m_buf;
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m_len = sizeof(struct sadb_msg);
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m_msg->sadb_msg_version = PF_KEY_V2;
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m_msg->sadb_msg_type = type;
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m_msg->sadb_msg_errno = 0;
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m_msg->sadb_msg_satype = SADB_SATYPE_UNSPEC;
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m_msg->sadb_msg_len = PFKEY_UNIT64(m_len);
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m_msg->sadb_msg_reserved = 0;
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m_msg->sadb_msg_reserved = 0;
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m_msg->sadb_msg_seq = 0;
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m_msg->sadb_msg_pid = getpid();
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sendkeymsg();
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return;
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}
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void
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promisc()
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{
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struct sadb_msg *m_msg = (struct sadb_msg *)m_buf;
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u_char rbuf[1024 * 32]; /* XXX: Enough ? Should I do MSG_PEEK ? */
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int so, len;
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m_len = sizeof(struct sadb_msg);
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m_msg->sadb_msg_version = PF_KEY_V2;
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m_msg->sadb_msg_type = SADB_X_PROMISC;
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m_msg->sadb_msg_errno = 0;
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m_msg->sadb_msg_satype = 1;
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m_msg->sadb_msg_len = PFKEY_UNIT64(m_len);
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m_msg->sadb_msg_reserved = 0;
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m_msg->sadb_msg_reserved = 0;
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m_msg->sadb_msg_seq = 0;
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m_msg->sadb_msg_pid = getpid();
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if ((so = socket(PF_KEY, SOCK_RAW, PF_KEY_V2)) < 0) {
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err(1, "socket(PF_KEY)");
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/*NOTREACHED*/
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}
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if ((len = send(so, m_buf, m_len, 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 ((len = 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 (len != sizeof(*base))
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continue;
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base = (struct sadb_msg *)rbuf;
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if ((len = 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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if (f_hexdump) {
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int 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: ", 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 (len % 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 (sizeof(*base) < len)
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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()
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{
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int so;
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u_char rbuf[1024 * 32]; /* XXX: Enough ? Should I do MSG_PEEK ? */
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int len;
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struct sadb_msg *msg;
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if ((so = pfkey_open()) < 0) {
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perror("pfkey_open");
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return -1;
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}
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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 *)m_buf);
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if ((len = send(so, m_buf, m_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 ((len = 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) != len) {
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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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if (postproc(msg, len) < 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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pfkey_close(so);
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return(0);
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}
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int
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postproc(msg, len)
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struct sadb_msg *msg;
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int len;
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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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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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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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break;
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}
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return(0);
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}
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/*------------------------------------------------------------*/
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static char *satype[] = {
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NULL, NULL, "ah", "esp"
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};
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static char *sastate[] = {
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"L", "M", "D", "d"
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};
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static 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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#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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const char *
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numstr(x)
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int x;
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{
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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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void
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shortdump_hdr()
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{
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printf("%-4s %-3s %-1s %-8s %-7s %s -> %s\n",
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"time", "p", "s", "spi", "ltime", "src", "dst");
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}
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void
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shortdump(msg)
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struct sadb_msg *msg;
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{
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caddr_t mhp[SADB_EXT_MAX + 1];
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char buf[1024], pbuf[10];
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struct sadb_sa *sa;
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struct sadb_address *saddr;
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struct sadb_lifetime *lts, *lth, *ltc;
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struct sockaddr *s;
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u_int t;
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time_t cur = time(0);
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pfkey_align(msg, mhp);
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pfkey_check(mhp);
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printf("%02lu%02lu", (u_long)(cur % 3600) / 60, (u_long)(cur % 60));
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printf(" %-3s", STR_OR_ID(msg->sadb_msg_satype, satype));
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if ((sa = (struct sadb_sa *)mhp[SADB_EXT_SA]) != NULL) {
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printf(" %-1s", STR_OR_ID(sa->sadb_sa_state, sastate));
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printf(" %08x", (u_int32_t)ntohl(sa->sadb_sa_spi));
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} else
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printf("%-1s %-8s", "?", "?");
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lts = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_SOFT];
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lth = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_HARD];
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ltc = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_CURRENT];
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if (lts && lth && ltc) {
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if (ltc->sadb_lifetime_addtime == 0)
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t = (u_long)0;
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else
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t = (u_long)(cur - ltc->sadb_lifetime_addtime);
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if (t >= 1000)
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strcpy(buf, " big/");
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else
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snprintf(buf, sizeof(buf), " %3lu/", (u_long)t);
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printf("%s", buf);
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t = (u_long)lth->sadb_lifetime_addtime;
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if (t >= 1000)
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strcpy(buf, "big");
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else
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snprintf(buf, sizeof(buf), "%-3lu", (u_long)t);
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printf("%s", buf);
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} else
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printf(" ???/???");
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printf(" ");
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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");
|
|
}
|