720 lines
24 KiB
C
720 lines
24 KiB
C
/*
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* Copyright (c) 2007-2011 Grégoire Henry, Juliusz Chroboczek
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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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/* \summary: Babel Routing Protocol printer */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <netdissect-stdinc.h>
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#include <stdio.h>
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#include <string.h>
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#include "netdissect.h"
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#include "addrtoname.h"
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#include "extract.h"
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static const char tstr[] = "[|babel]";
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static void babel_print_v2(netdissect_options *, const u_char *cp, u_int length);
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void
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babel_print(netdissect_options *ndo,
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const u_char *cp, u_int length)
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{
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ND_PRINT((ndo, "babel"));
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ND_TCHECK2(*cp, 4);
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if(cp[0] != 42) {
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ND_PRINT((ndo, " invalid header"));
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return;
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} else {
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ND_PRINT((ndo, " %d", cp[1]));
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}
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switch(cp[1]) {
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case 2:
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babel_print_v2(ndo, cp, length);
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break;
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default:
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ND_PRINT((ndo, " unknown version"));
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break;
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}
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return;
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trunc:
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ND_PRINT((ndo, " %s", tstr));
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return;
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}
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/* TLVs */
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#define MESSAGE_PAD1 0
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#define MESSAGE_PADN 1
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#define MESSAGE_ACK_REQ 2
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#define MESSAGE_ACK 3
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#define MESSAGE_HELLO 4
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#define MESSAGE_IHU 5
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#define MESSAGE_ROUTER_ID 6
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#define MESSAGE_NH 7
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#define MESSAGE_UPDATE 8
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#define MESSAGE_REQUEST 9
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#define MESSAGE_MH_REQUEST 10
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#define MESSAGE_TSPC 11
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#define MESSAGE_HMAC 12
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#define MESSAGE_UPDATE_SRC_SPECIFIC 13
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#define MESSAGE_REQUEST_SRC_SPECIFIC 14
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#define MESSAGE_MH_REQUEST_SRC_SPECIFIC 15
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/* sub-TLVs */
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#define MESSAGE_SUB_PAD1 0
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#define MESSAGE_SUB_PADN 1
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#define MESSAGE_SUB_DIVERSITY 2
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#define MESSAGE_SUB_TIMESTAMP 3
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/* Diversity sub-TLV channel codes */
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static const struct tok diversity_str[] = {
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{ 0, "reserved" },
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{ 255, "all" },
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{ 0, NULL }
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};
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static const char *
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format_id(const u_char *id)
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{
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static char buf[25];
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snprintf(buf, 25, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
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id[0], id[1], id[2], id[3], id[4], id[5], id[6], id[7]);
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buf[24] = '\0';
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return buf;
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}
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static const unsigned char v4prefix[16] =
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{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 };
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static const char *
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format_prefix(netdissect_options *ndo, const u_char *prefix, unsigned char plen)
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{
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static char buf[50];
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if(plen >= 96 && memcmp(prefix, v4prefix, 12) == 0)
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snprintf(buf, 50, "%s/%u", ipaddr_string(ndo, prefix + 12), plen - 96);
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else
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snprintf(buf, 50, "%s/%u", ip6addr_string(ndo, prefix), plen);
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buf[49] = '\0';
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return buf;
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}
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static const char *
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format_address(netdissect_options *ndo, const u_char *prefix)
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{
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if(memcmp(prefix, v4prefix, 12) == 0)
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return ipaddr_string(ndo, prefix + 12);
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else
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return ip6addr_string(ndo, prefix);
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}
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static const char *
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format_interval(const uint16_t i)
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{
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static char buf[sizeof("000.00s")];
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if (i == 0)
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return "0.0s (bogus)";
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snprintf(buf, sizeof(buf), "%u.%02us", i / 100, i % 100);
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return buf;
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}
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static const char *
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format_interval_update(const uint16_t i)
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{
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return i == 0xFFFF ? "infinity" : format_interval(i);
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}
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static const char *
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format_timestamp(const uint32_t i)
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{
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static char buf[sizeof("0000.000000s")];
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snprintf(buf, sizeof(buf), "%u.%06us", i / 1000000, i % 1000000);
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return buf;
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}
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/* Return number of octets consumed from the input buffer (not the prefix length
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* in bytes), or -1 for encoding error. */
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static int
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network_prefix(int ae, int plen, unsigned int omitted,
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const unsigned char *p, const unsigned char *dp,
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unsigned int len, unsigned char *p_r)
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{
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unsigned pb;
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unsigned char prefix[16];
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int consumed = 0;
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if(plen >= 0)
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pb = (plen + 7) / 8;
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else if(ae == 1)
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pb = 4;
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else
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pb = 16;
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if(pb > 16)
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return -1;
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memset(prefix, 0, 16);
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switch(ae) {
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case 0: break;
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case 1:
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if(omitted > 4 || pb > 4 || (pb > omitted && len < pb - omitted))
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return -1;
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memcpy(prefix, v4prefix, 12);
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if(omitted) {
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if (dp == NULL) return -1;
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memcpy(prefix, dp, 12 + omitted);
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}
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if(pb > omitted) {
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memcpy(prefix + 12 + omitted, p, pb - omitted);
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consumed = pb - omitted;
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}
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break;
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case 2:
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if(omitted > 16 || (pb > omitted && len < pb - omitted))
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return -1;
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if(omitted) {
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if (dp == NULL) return -1;
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memcpy(prefix, dp, omitted);
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}
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if(pb > omitted) {
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memcpy(prefix + omitted, p, pb - omitted);
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consumed = pb - omitted;
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}
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break;
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case 3:
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if(pb > 8 && len < pb - 8) return -1;
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prefix[0] = 0xfe;
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prefix[1] = 0x80;
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if(pb > 8) {
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memcpy(prefix + 8, p, pb - 8);
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consumed = pb - 8;
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}
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break;
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default:
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return -1;
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}
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memcpy(p_r, prefix, 16);
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return consumed;
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}
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static int
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network_address(int ae, const unsigned char *a, unsigned int len,
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unsigned char *a_r)
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{
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return network_prefix(ae, -1, 0, a, NULL, len, a_r);
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}
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/*
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* Sub-TLVs consume the "extra data" of Babel TLVs (see Section 4.3 of RFC6126),
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* their encoding is similar to the encoding of TLVs, but the type namespace is
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* different:
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*
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* o Type 0 stands for Pad1 sub-TLV with the same encoding as the Pad1 TLV.
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* o Type 1 stands for PadN sub-TLV with the same encoding as the PadN TLV.
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* o Type 2 stands for Diversity sub-TLV, which propagates diversity routing
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* data. Its body is a variable-length sequence of 8-bit unsigned integers,
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* each representing per-hop number of interferring radio channel for the
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* prefix. Channel 0 is invalid and must not be used in the sub-TLV, channel
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* 255 interferes with any other channel.
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* o Type 3 stands for Timestamp sub-TLV, used to compute RTT between
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* neighbours. In the case of a Hello TLV, the body stores a 32-bits
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* timestamp, while in the case of a IHU TLV, two 32-bits timestamps are
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* stored.
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*
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* Sub-TLV types 0 and 1 are valid for any TLV type, whether sub-TLV type 2 is
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* only valid for TLV type 8 (Update). Note that within an Update TLV a missing
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* Diversity sub-TLV is not the same as a Diversity sub-TLV with an empty body.
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* The former would mean a lack of any claims about the interference, and the
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* latter would state that interference is definitely absent.
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* A type 3 sub-TLV is valid both for Hello and IHU TLVs, though the exact
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* semantic of the sub-TLV is different in each case.
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*/
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static void
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subtlvs_print(netdissect_options *ndo,
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const u_char *cp, const u_char *ep, const uint8_t tlv_type)
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{
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uint8_t subtype, sublen;
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const char *sep;
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uint32_t t1, t2;
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while (cp < ep) {
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subtype = *cp++;
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if(subtype == MESSAGE_SUB_PAD1) {
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ND_PRINT((ndo, " sub-pad1"));
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continue;
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}
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if(cp == ep)
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goto invalid;
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sublen = *cp++;
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if(cp + sublen > ep)
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goto invalid;
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switch(subtype) {
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case MESSAGE_SUB_PADN:
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ND_PRINT((ndo, " sub-padn"));
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cp += sublen;
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break;
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case MESSAGE_SUB_DIVERSITY:
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ND_PRINT((ndo, " sub-diversity"));
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if (sublen == 0) {
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ND_PRINT((ndo, " empty"));
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break;
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}
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sep = " ";
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while(sublen--) {
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ND_PRINT((ndo, "%s%s", sep, tok2str(diversity_str, "%u", *cp++)));
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sep = "-";
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}
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if(tlv_type != MESSAGE_UPDATE &&
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tlv_type != MESSAGE_UPDATE_SRC_SPECIFIC)
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ND_PRINT((ndo, " (bogus)"));
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break;
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case MESSAGE_SUB_TIMESTAMP:
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ND_PRINT((ndo, " sub-timestamp"));
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if(tlv_type == MESSAGE_HELLO) {
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if(sublen < 4)
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goto invalid;
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t1 = EXTRACT_32BITS(cp);
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ND_PRINT((ndo, " %s", format_timestamp(t1)));
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} else if(tlv_type == MESSAGE_IHU) {
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if(sublen < 8)
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goto invalid;
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t1 = EXTRACT_32BITS(cp);
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ND_PRINT((ndo, " %s", format_timestamp(t1)));
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t2 = EXTRACT_32BITS(cp + 4);
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ND_PRINT((ndo, "|%s", format_timestamp(t2)));
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} else
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ND_PRINT((ndo, " (bogus)"));
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cp += sublen;
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break;
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default:
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ND_PRINT((ndo, " sub-unknown-0x%02x", subtype));
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cp += sublen;
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} /* switch */
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} /* while */
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return;
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invalid:
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ND_PRINT((ndo, "%s", istr));
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}
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#define ICHECK(i, l) \
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if ((i) + (l) > bodylen || (i) + (l) > length) goto invalid;
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static void
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babel_print_v2(netdissect_options *ndo,
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const u_char *cp, u_int length)
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{
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u_int i;
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u_short bodylen;
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u_char v4_prefix[16] =
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{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 };
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u_char v6_prefix[16] = {0};
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ND_TCHECK2(*cp, 4);
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if (length < 4)
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goto invalid;
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bodylen = EXTRACT_16BITS(cp + 2);
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ND_PRINT((ndo, " (%u)", bodylen));
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if (4U + bodylen > length)
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goto invalid;
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/* Process the TLVs in the body */
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i = 0;
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while(i < bodylen) {
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const u_char *message;
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u_int type, len;
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message = cp + 4 + i;
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ND_TCHECK2(*message, 1);
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if((type = message[0]) == MESSAGE_PAD1) {
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ND_PRINT((ndo, ndo->ndo_vflag ? "\n\tPad 1" : " pad1"));
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i += 1;
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continue;
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}
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ND_TCHECK2(*message, 2);
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ICHECK(i, 2);
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len = message[1];
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ND_TCHECK2(*message, 2 + len);
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ICHECK(i, 2 + len);
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switch(type) {
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case MESSAGE_PADN: {
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if (!ndo->ndo_vflag)
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ND_PRINT((ndo, " padN"));
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else
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ND_PRINT((ndo, "\n\tPad %d", len + 2));
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}
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break;
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case MESSAGE_ACK_REQ: {
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u_short nonce, interval;
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if (!ndo->ndo_vflag)
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ND_PRINT((ndo, " ack-req"));
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else {
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ND_PRINT((ndo, "\n\tAcknowledgment Request "));
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if(len < 6) goto invalid;
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nonce = EXTRACT_16BITS(message + 4);
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interval = EXTRACT_16BITS(message + 6);
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ND_PRINT((ndo, "%04x %s", nonce, format_interval(interval)));
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}
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}
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break;
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case MESSAGE_ACK: {
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u_short nonce;
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if (!ndo->ndo_vflag)
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ND_PRINT((ndo, " ack"));
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else {
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ND_PRINT((ndo, "\n\tAcknowledgment "));
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if(len < 2) goto invalid;
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nonce = EXTRACT_16BITS(message + 2);
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ND_PRINT((ndo, "%04x", nonce));
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}
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}
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break;
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case MESSAGE_HELLO: {
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u_short seqno, interval;
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if (!ndo->ndo_vflag)
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ND_PRINT((ndo, " hello"));
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else {
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ND_PRINT((ndo, "\n\tHello "));
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if(len < 6) goto invalid;
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seqno = EXTRACT_16BITS(message + 4);
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interval = EXTRACT_16BITS(message + 6);
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ND_PRINT((ndo, "seqno %u interval %s", seqno, format_interval(interval)));
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/* Extra data. */
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if(len > 6)
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subtlvs_print(ndo, message + 8, message + 2 + len, type);
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}
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}
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break;
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case MESSAGE_IHU: {
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unsigned short txcost, interval;
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if (!ndo->ndo_vflag)
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ND_PRINT((ndo, " ihu"));
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else {
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u_char address[16];
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int rc;
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ND_PRINT((ndo, "\n\tIHU "));
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if(len < 6) goto invalid;
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txcost = EXTRACT_16BITS(message + 4);
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interval = EXTRACT_16BITS(message + 6);
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rc = network_address(message[2], message + 8, len - 6, address);
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if(rc < 0) { ND_PRINT((ndo, "%s", tstr)); break; }
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ND_PRINT((ndo, "%s txcost %u interval %s",
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format_address(ndo, address), txcost, format_interval(interval)));
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/* Extra data. */
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if((u_int)rc < len - 6)
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subtlvs_print(ndo, message + 8 + rc, message + 2 + len,
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type);
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}
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}
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break;
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case MESSAGE_ROUTER_ID: {
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if (!ndo->ndo_vflag)
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ND_PRINT((ndo, " router-id"));
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else {
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ND_PRINT((ndo, "\n\tRouter Id"));
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if(len < 10) goto invalid;
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ND_PRINT((ndo, " %s", format_id(message + 4)));
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}
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}
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break;
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case MESSAGE_NH: {
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if (!ndo->ndo_vflag)
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ND_PRINT((ndo, " nh"));
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else {
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int rc;
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u_char nh[16];
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ND_PRINT((ndo, "\n\tNext Hop"));
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if(len < 2) goto invalid;
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rc = network_address(message[2], message + 4, len - 2, nh);
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if(rc < 0) goto invalid;
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ND_PRINT((ndo, " %s", format_address(ndo, nh)));
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}
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}
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break;
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case MESSAGE_UPDATE: {
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if (!ndo->ndo_vflag) {
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ND_PRINT((ndo, " update"));
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if(len < 10)
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ND_PRINT((ndo, "/truncated"));
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else
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ND_PRINT((ndo, "%s%s%s",
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(message[3] & 0x80) ? "/prefix": "",
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(message[3] & 0x40) ? "/id" : "",
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(message[3] & 0x3f) ? "/unknown" : ""));
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} else {
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u_short interval, seqno, metric;
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u_char plen;
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int rc;
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u_char prefix[16];
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ND_PRINT((ndo, "\n\tUpdate"));
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if(len < 10) goto invalid;
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plen = message[4] + (message[2] == 1 ? 96 : 0);
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rc = network_prefix(message[2], message[4], message[5],
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message + 12,
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message[2] == 1 ? v4_prefix : v6_prefix,
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len - 10, prefix);
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if(rc < 0) goto invalid;
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interval = EXTRACT_16BITS(message + 6);
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seqno = EXTRACT_16BITS(message + 8);
|
|
metric = EXTRACT_16BITS(message + 10);
|
|
ND_PRINT((ndo, "%s%s%s %s metric %u seqno %u interval %s",
|
|
(message[3] & 0x80) ? "/prefix": "",
|
|
(message[3] & 0x40) ? "/id" : "",
|
|
(message[3] & 0x3f) ? "/unknown" : "",
|
|
format_prefix(ndo, prefix, plen),
|
|
metric, seqno, format_interval_update(interval)));
|
|
if(message[3] & 0x80) {
|
|
if(message[2] == 1)
|
|
memcpy(v4_prefix, prefix, 16);
|
|
else
|
|
memcpy(v6_prefix, prefix, 16);
|
|
}
|
|
/* extra data? */
|
|
if((u_int)rc < len - 10)
|
|
subtlvs_print(ndo, message + 12 + rc, message + 2 + len, type);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case MESSAGE_REQUEST: {
|
|
if (!ndo->ndo_vflag)
|
|
ND_PRINT((ndo, " request"));
|
|
else {
|
|
int rc;
|
|
u_char prefix[16], plen;
|
|
ND_PRINT((ndo, "\n\tRequest "));
|
|
if(len < 2) goto invalid;
|
|
plen = message[3] + (message[2] == 1 ? 96 : 0);
|
|
rc = network_prefix(message[2], message[3], 0,
|
|
message + 4, NULL, len - 2, prefix);
|
|
if(rc < 0) goto invalid;
|
|
ND_PRINT((ndo, "for %s",
|
|
message[2] == 0 ? "any" : format_prefix(ndo, prefix, plen)));
|
|
}
|
|
}
|
|
break;
|
|
|
|
case MESSAGE_MH_REQUEST : {
|
|
if (!ndo->ndo_vflag)
|
|
ND_PRINT((ndo, " mh-request"));
|
|
else {
|
|
int rc;
|
|
u_short seqno;
|
|
u_char prefix[16], plen;
|
|
ND_PRINT((ndo, "\n\tMH-Request "));
|
|
if(len < 14) goto invalid;
|
|
seqno = EXTRACT_16BITS(message + 4);
|
|
rc = network_prefix(message[2], message[3], 0,
|
|
message + 16, NULL, len - 14, prefix);
|
|
if(rc < 0) goto invalid;
|
|
plen = message[3] + (message[2] == 1 ? 96 : 0);
|
|
ND_PRINT((ndo, "(%u hops) for %s seqno %u id %s",
|
|
message[6], format_prefix(ndo, prefix, plen),
|
|
seqno, format_id(message + 8)));
|
|
}
|
|
}
|
|
break;
|
|
case MESSAGE_TSPC :
|
|
if (!ndo->ndo_vflag)
|
|
ND_PRINT((ndo, " tspc"));
|
|
else {
|
|
ND_PRINT((ndo, "\n\tTS/PC "));
|
|
if(len < 6) goto invalid;
|
|
ND_PRINT((ndo, "timestamp %u packetcounter %u", EXTRACT_32BITS (message + 4),
|
|
EXTRACT_16BITS(message + 2)));
|
|
}
|
|
break;
|
|
case MESSAGE_HMAC : {
|
|
if (!ndo->ndo_vflag)
|
|
ND_PRINT((ndo, " hmac"));
|
|
else {
|
|
unsigned j;
|
|
ND_PRINT((ndo, "\n\tHMAC "));
|
|
if(len < 18) goto invalid;
|
|
ND_PRINT((ndo, "key-id %u digest-%u ", EXTRACT_16BITS(message + 2), len - 2));
|
|
for (j = 0; j < len - 2; j++)
|
|
ND_PRINT((ndo, "%02X", message[4 + j]));
|
|
}
|
|
}
|
|
break;
|
|
|
|
case MESSAGE_UPDATE_SRC_SPECIFIC : {
|
|
if(!ndo->ndo_vflag) {
|
|
ND_PRINT((ndo, " ss-update"));
|
|
} else {
|
|
u_char prefix[16], src_prefix[16];
|
|
u_short interval, seqno, metric;
|
|
u_char ae, plen, src_plen, omitted;
|
|
int rc;
|
|
int parsed_len = 10;
|
|
ND_PRINT((ndo, "\n\tSS-Update"));
|
|
if(len < 10) goto invalid;
|
|
ae = message[2];
|
|
src_plen = message[3];
|
|
plen = message[4];
|
|
omitted = message[5];
|
|
interval = EXTRACT_16BITS(message + 6);
|
|
seqno = EXTRACT_16BITS(message + 8);
|
|
metric = EXTRACT_16BITS(message + 10);
|
|
rc = network_prefix(ae, plen, omitted, message + 2 + parsed_len,
|
|
ae == 1 ? v4_prefix : v6_prefix,
|
|
len - parsed_len, prefix);
|
|
if(rc < 0) goto invalid;
|
|
if(ae == 1)
|
|
plen += 96;
|
|
parsed_len += rc;
|
|
rc = network_prefix(ae, src_plen, 0, message + 2 + parsed_len,
|
|
NULL, len - parsed_len, src_prefix);
|
|
if(rc < 0) goto invalid;
|
|
if(ae == 1)
|
|
src_plen += 96;
|
|
parsed_len += rc;
|
|
|
|
ND_PRINT((ndo, " %s from", format_prefix(ndo, prefix, plen)));
|
|
ND_PRINT((ndo, " %s metric %u seqno %u interval %s",
|
|
format_prefix(ndo, src_prefix, src_plen),
|
|
metric, seqno, format_interval_update(interval)));
|
|
/* extra data? */
|
|
if((u_int)parsed_len < len)
|
|
subtlvs_print(ndo, message + 2 + parsed_len,
|
|
message + 2 + len, type);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case MESSAGE_REQUEST_SRC_SPECIFIC : {
|
|
if(!ndo->ndo_vflag)
|
|
ND_PRINT((ndo, " ss-request"));
|
|
else {
|
|
int rc, parsed_len = 3;
|
|
u_char ae, plen, src_plen, prefix[16], src_prefix[16];
|
|
ND_PRINT((ndo, "\n\tSS-Request "));
|
|
if(len < 3) goto invalid;
|
|
ae = message[2];
|
|
plen = message[3];
|
|
src_plen = message[4];
|
|
rc = network_prefix(ae, plen, 0, message + 2 + parsed_len,
|
|
NULL, len - parsed_len, prefix);
|
|
if(rc < 0) goto invalid;
|
|
if(ae == 1)
|
|
plen += 96;
|
|
parsed_len += rc;
|
|
rc = network_prefix(ae, src_plen, 0, message + 2 + parsed_len,
|
|
NULL, len - parsed_len, src_prefix);
|
|
if(rc < 0) goto invalid;
|
|
if(ae == 1)
|
|
src_plen += 96;
|
|
parsed_len += rc;
|
|
if(ae == 0) {
|
|
ND_PRINT((ndo, "for any"));
|
|
} else {
|
|
ND_PRINT((ndo, "for (%s, ", format_prefix(ndo, prefix, plen)));
|
|
ND_PRINT((ndo, "%s)", format_prefix(ndo, src_prefix, src_plen)));
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case MESSAGE_MH_REQUEST_SRC_SPECIFIC : {
|
|
if(!ndo->ndo_vflag)
|
|
ND_PRINT((ndo, " ss-mh-request"));
|
|
else {
|
|
int rc, parsed_len = 14;
|
|
u_short seqno;
|
|
u_char ae, plen, src_plen, prefix[16], src_prefix[16], hopc;
|
|
const u_char *router_id = NULL;
|
|
ND_PRINT((ndo, "\n\tSS-MH-Request "));
|
|
if(len < 14) goto invalid;
|
|
ae = message[2];
|
|
plen = message[3];
|
|
seqno = EXTRACT_16BITS(message + 4);
|
|
hopc = message[6];
|
|
src_plen = message[7];
|
|
router_id = message + 8;
|
|
rc = network_prefix(ae, plen, 0, message + 2 + parsed_len,
|
|
NULL, len - parsed_len, prefix);
|
|
if(rc < 0) goto invalid;
|
|
if(ae == 1)
|
|
plen += 96;
|
|
parsed_len += rc;
|
|
rc = network_prefix(ae, src_plen, 0, message + 2 + parsed_len,
|
|
NULL, len - parsed_len, src_prefix);
|
|
if(rc < 0) goto invalid;
|
|
if(ae == 1)
|
|
src_plen += 96;
|
|
ND_PRINT((ndo, "(%u hops) for (%s, ",
|
|
hopc, format_prefix(ndo, prefix, plen)));
|
|
ND_PRINT((ndo, "%s) seqno %u id %s",
|
|
format_prefix(ndo, src_prefix, src_plen),
|
|
seqno, format_id(router_id)));
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if (!ndo->ndo_vflag)
|
|
ND_PRINT((ndo, " unknown"));
|
|
else
|
|
ND_PRINT((ndo, "\n\tUnknown message type %d", type));
|
|
}
|
|
i += len + 2;
|
|
}
|
|
return;
|
|
|
|
trunc:
|
|
ND_PRINT((ndo, " %s", tstr));
|
|
return;
|
|
|
|
invalid:
|
|
ND_PRINT((ndo, "%s", istr));
|
|
return;
|
|
}
|