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author | fenner <fenner@FreeBSD.org> | 2000-01-30 00:45:58 +0000 |
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committer | fenner <fenner@FreeBSD.org> | 2000-01-30 00:45:58 +0000 |
commit | 54c4a9c9f2aca2e032cbf41f5eb012e2e9628dd4 (patch) | |
tree | d25e1fd8c818bfce397a4c7e3f2c66229c814b2a /contrib/tcpdump/print-ip6opts.c | |
parent | 0c669098d078c88cf703bade2263846b39e01d83 (diff) | |
download | FreeBSD-src-54c4a9c9f2aca2e032cbf41f5eb012e2e9628dd4.zip FreeBSD-src-54c4a9c9f2aca2e032cbf41f5eb012e2e9628dd4.tar.gz |
Virgin import of tcpdump.org tcpdump v3.5
Diffstat (limited to 'contrib/tcpdump/print-ip6opts.c')
-rw-r--r-- | contrib/tcpdump/print-ip6opts.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-ip6opts.c b/contrib/tcpdump/print-ip6opts.c new file mode 100644 index 0000000..756f098 --- /dev/null +++ b/contrib/tcpdump/print-ip6opts.c @@ -0,0 +1,162 @@ +/* + * Copyright (C) 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifndef lint +static const char rcsid[] = + "@(#) $Header: /tcpdump/master/tcpdump/print-ip6opts.c,v 1.2.2.1 2000/01/11 06:58:25 fenner Exp $"; +#endif + +#ifdef INET6 +#include <sys/param.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/socket.h> + +#include <netinet/in.h> +#include <netinet/ip6.h> + +#include <stdio.h> + +#include "interface.h" +#include "addrtoname.h" + +void +ip6_opt_print(const u_char *bp, int len) +{ + int i; + int optlen; + + for (i = 0; i < len; i += optlen) { + switch (bp[i]) { + case IP6OPT_PAD1: + optlen = 1; + break; + case IP6OPT_PADN: + if (len - i < IP6OPT_MINLEN) { + printf("(padn: trunc)"); + goto trunc; + } + optlen = bp[i + 1] + 2; + break; + case IP6OPT_RTALERT: + if (len - i < IP6OPT_RTALERT_LEN) { + printf("(rtalert: trunc)"); + goto trunc; + } + if (bp[i + 1] != IP6OPT_RTALERT_LEN - 2) { + printf("(rtalert: invalid len %d)", bp[i + 1]); + goto trunc; + } + printf("(rtalert: 0x%04x) ", ntohs(*(u_short *)&bp[i + 2])); + optlen = IP6OPT_RTALERT_LEN; + break; + case IP6OPT_JUMBO: + if (len - i < IP6OPT_JUMBO_LEN) { + printf("(jumbo: trunc)"); + goto trunc; + } + if (bp[i + 1] != IP6OPT_JUMBO_LEN - 2) { + printf("(jumbo: invalid len %d)", bp[i + 1]); + goto trunc; + } + printf("(jumbo: %u) ", (u_int32_t)ntohl(*(u_int *)&bp[i + 2])); + optlen = IP6OPT_JUMBO_LEN; + break; + default: + if (len - i < IP6OPT_MINLEN) { + printf("(type %d: trunc)", bp[i]); + goto trunc; + } + printf("(type 0x%02x: len=%d) ", bp[i], bp[i + 1]); + optlen = bp[i + 1] + 2; + break; + } + } + +#if 0 +end: +#endif + return; + +trunc: + printf("[trunc] "); +} + +int +hbhopt_print(register const u_char *bp) +{ + const struct ip6_hbh *dp = (struct ip6_hbh *)bp; + register const u_char *ep; + int hbhlen = 0; + + /* 'ep' points to the end of avaible data. */ + ep = snapend; + TCHECK(dp->ip6h_len); + hbhlen = (int)((dp->ip6h_len + 1) << 3); + TCHECK2(dp, hbhlen); + printf("HBH "); + if (vflag) + ip6_opt_print((const u_char *)dp + sizeof(*dp), hbhlen - sizeof(*dp)); + + return(hbhlen); + + trunc: + fputs("[|HBH]", stdout); + return(hbhlen); +} + +int +dstopt_print(register const u_char *bp) +{ + const struct ip6_dest *dp = (struct ip6_dest *)bp; + register const u_char *ep; + int dstoptlen = 0; + + /* 'ep' points to the end of avaible data. */ + ep = snapend; + TCHECK(dp->ip6d_len); + dstoptlen = (int)((dp->ip6d_len + 1) << 3); + TCHECK2(dp, dstoptlen); + printf("DSTOPT "); + if (vflag) { + ip6_opt_print((const u_char *)dp + sizeof(*dp), + dstoptlen - sizeof(*dp)); + } + + return(dstoptlen); + + trunc: + fputs("[|DSTOPT]", stdout); + return(dstoptlen); +} +#endif /* INET6 */ |