/* $OpenBSD: print-udpencap.c,v 1.7 2020/01/24 22:46:37 procter Exp $ */ /* * Copyright (c) 2003 Markus Friedl. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <sys/types.h> #include <stdio.h> #include "interface.h" void udpencap_print(const u_char *bp, u_int len, const u_char *bp2) { u_int32_t *spi; /* Recognize NAT-T Keepalive msgs. (draft-ietf-ipsec-udp-encaps-nn) */ if (len == 1 && *bp == 0xFF) { printf("NAT-T Keepalive"); return; } if (len < sizeof(u_int32_t)) { printf("[|udpencap]"); return; } printf("udpencap: "); spi = (u_int32_t *)(bp); if (*spi == 0) ike_print(bp + sizeof(u_int32_t), len - sizeof(u_int32_t)); else esp_print(bp, len, bp2); }