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![Joseph Mingrone](/assets/img/avatar_default.png)
Local changes: - Update some local modifications to fix build - Synch config.h with upstream as much as possible Changelog: https://git.tcpdump.org/tcpdump/blob/55bc126b0216cfe409b8d6bd378f65679d136ddf:/CHANGES Reviewed by: emaste Obtained from: https://www.tcpdump.org/release/tcpdump-4.99.4.tar.gz Sponsored by: The FreeBSD Foundation
715 lines
23 KiB
C
715 lines
23 KiB
C
/*
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* Copyright (c) 1998-2007 The TCPDUMP project
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* Copyright (c) 2009 Florian Forster
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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: (1) source code
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* distributions retain the above copyright notice and this paragraph
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* in its entirety, and (2) distributions including binary code include
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* the above copyright notice and this paragraph in its entirety in
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* the documentation or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
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* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
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* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE.
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*
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* Original code by Hannes Gredler <hannes@gredler.at>
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* IPv6 additions by Florian Forster <octo at verplant.org>
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*/
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/* \summary: Optimized Link State Routing Protocol (OLSR) printer */
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/* specification: RFC 3626 */
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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 "netdissect.h"
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#include "addrtoname.h"
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#include "extract.h"
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/*
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* RFC 3626 common header
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*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Packet Length | Packet Sequence Number |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Message Type | Vtime | Message Size |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Originator Address |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Time To Live | Hop Count | Message Sequence Number |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* : MESSAGE :
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Message Type | Vtime | Message Size |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Originator Address |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Time To Live | Hop Count | Message Sequence Number |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* : MESSAGE :
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* : :
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*/
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struct olsr_common {
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nd_uint16_t packet_len;
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nd_uint16_t packet_seq;
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};
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#define OLSR_HELLO_MSG 1 /* rfc3626 */
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#define OLSR_TC_MSG 2 /* rfc3626 */
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#define OLSR_MID_MSG 3 /* rfc3626 */
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#define OLSR_HNA_MSG 4 /* rfc3626 */
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#define OLSR_POWERINFO_MSG 128
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#define OLSR_NAMESERVICE_MSG 130
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#define OLSR_HELLO_LQ_MSG 201 /* LQ extensions olsr.org */
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#define OLSR_TC_LQ_MSG 202 /* LQ extensions olsr.org */
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static const struct tok olsr_msg_values[] = {
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{ OLSR_HELLO_MSG, "Hello" },
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{ OLSR_TC_MSG, "TC" },
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{ OLSR_MID_MSG, "MID" },
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{ OLSR_HNA_MSG, "HNA" },
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{ OLSR_POWERINFO_MSG, "Powerinfo" },
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{ OLSR_NAMESERVICE_MSG, "Nameservice" },
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{ OLSR_HELLO_LQ_MSG, "Hello-LQ" },
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{ OLSR_TC_LQ_MSG, "TC-LQ" },
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{ 0, NULL}
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};
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struct olsr_msg4 {
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nd_uint8_t msg_type;
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nd_uint8_t vtime;
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nd_uint16_t msg_len;
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nd_ipv4 originator;
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nd_uint8_t ttl;
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nd_uint8_t hopcount;
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nd_uint16_t msg_seq;
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};
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struct olsr_msg6 {
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nd_uint8_t msg_type;
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nd_uint8_t vtime;
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nd_uint16_t msg_len;
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nd_ipv6 originator;
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nd_uint8_t ttl;
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nd_uint8_t hopcount;
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nd_uint16_t msg_seq;
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};
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struct olsr_hello {
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nd_byte res[2];
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nd_uint8_t htime;
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nd_uint8_t will;
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};
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struct olsr_hello_link {
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nd_uint8_t link_code;
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nd_byte res;
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nd_uint16_t len;
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};
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struct olsr_tc {
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nd_uint16_t ans_seq;
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nd_byte res[2];
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};
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struct olsr_hna4 {
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nd_ipv4 network;
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nd_ipv4 mask;
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};
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struct olsr_hna6 {
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nd_ipv6 network;
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nd_ipv6 mask;
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};
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/** gateway HNA flags */
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enum gateway_hna_flags {
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GW_HNA_FLAG_LINKSPEED = 1 << 0,
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GW_HNA_FLAG_IPV4 = 1 << 1,
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GW_HNA_FLAG_IPV4_NAT = 1 << 2,
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GW_HNA_FLAG_IPV6 = 1 << 3,
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GW_HNA_FLAG_IPV6PREFIX = 1 << 4
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};
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/** gateway HNA field byte offsets in the netmask field of the HNA */
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enum gateway_hna_fields {
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GW_HNA_PAD = 0,
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GW_HNA_FLAGS = 1,
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GW_HNA_UPLINK = 2,
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GW_HNA_DOWNLINK = 3,
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GW_HNA_V6PREFIXLEN = 4,
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GW_HNA_V6PREFIX = 5
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};
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#define OLSR_EXTRACT_LINK_TYPE(link_code) (link_code & 0x3)
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#define OLSR_EXTRACT_NEIGHBOR_TYPE(link_code) (link_code >> 2)
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static const struct tok olsr_link_type_values[] = {
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{ 0, "Unspecified" },
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{ 1, "Asymmetric" },
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{ 2, "Symmetric" },
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{ 3, "Lost" },
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{ 0, NULL}
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};
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static const struct tok olsr_neighbor_type_values[] = {
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{ 0, "Not-Neighbor" },
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{ 1, "Symmetric" },
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{ 2, "Symmetric-MPR" },
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{ 0, NULL}
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};
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struct olsr_lq_neighbor4 {
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nd_ipv4 neighbor;
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nd_uint8_t link_quality;
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nd_uint8_t neighbor_link_quality;
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nd_byte res[2];
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};
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struct olsr_lq_neighbor6 {
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nd_ipv6 neighbor;
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nd_uint8_t link_quality;
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nd_uint8_t neighbor_link_quality;
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nd_byte res[2];
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};
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#define MAX_SMARTGW_SPEED 320000000
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/**
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* Convert an encoded 1 byte transport value (5 bits mantissa, 3 bits exponent)
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* to an uplink/downlink speed value
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*
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* @param value the encoded 1 byte transport value
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* @return the uplink/downlink speed value (in kbit/s)
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*/
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static uint32_t deserialize_gw_speed(uint8_t value) {
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uint32_t speed;
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uint32_t exp;
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if (!value) {
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return 0;
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}
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if (value == UINT8_MAX) {
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/* maximum value: also return maximum value */
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return MAX_SMARTGW_SPEED;
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}
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speed = (value >> 3) + 1;
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exp = value & 7;
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while (exp != 0) {
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speed *= 10;
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exp--;
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}
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return speed;
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}
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/*
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* macro to convert the 8-bit mantissa/exponent to a double float
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* taken from olsr.org.
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*/
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#define VTIME_SCALE_FACTOR 0.0625
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#define ME_TO_DOUBLE(me) \
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(double)(VTIME_SCALE_FACTOR*(1+(double)(me>>4)/16)*(double)(1<<(me&0x0F)))
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/*
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* print a neighbor list with LQ extensions.
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*/
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static int
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olsr_print_lq_neighbor4(netdissect_options *ndo,
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const u_char *msg_data, u_int hello_len)
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{
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const struct olsr_lq_neighbor4 *lq_neighbor;
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while (hello_len >= sizeof(struct olsr_lq_neighbor4)) {
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lq_neighbor = (const struct olsr_lq_neighbor4 *)msg_data;
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ND_TCHECK_SIZE(lq_neighbor);
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ND_PRINT("\n\t neighbor %s, link-quality %.2f%%"
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", neighbor-link-quality %.2f%%",
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GET_IPADDR_STRING(lq_neighbor->neighbor),
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((double) GET_U_1(lq_neighbor->link_quality)/2.55),
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((double) GET_U_1(lq_neighbor->neighbor_link_quality)/2.55));
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msg_data += sizeof(struct olsr_lq_neighbor4);
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hello_len -= sizeof(struct olsr_lq_neighbor4);
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}
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return (0);
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trunc:
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return -1;
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}
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static int
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olsr_print_lq_neighbor6(netdissect_options *ndo,
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const u_char *msg_data, u_int hello_len)
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{
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const struct olsr_lq_neighbor6 *lq_neighbor;
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while (hello_len >= sizeof(struct olsr_lq_neighbor6)) {
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lq_neighbor = (const struct olsr_lq_neighbor6 *)msg_data;
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ND_TCHECK_SIZE(lq_neighbor);
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ND_PRINT("\n\t neighbor %s, link-quality %.2f%%"
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", neighbor-link-quality %.2f%%",
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GET_IP6ADDR_STRING(lq_neighbor->neighbor),
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((double) GET_U_1(lq_neighbor->link_quality)/2.55),
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((double) GET_U_1(lq_neighbor->neighbor_link_quality)/2.55));
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msg_data += sizeof(struct olsr_lq_neighbor6);
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hello_len -= sizeof(struct olsr_lq_neighbor6);
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}
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return (0);
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trunc:
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return -1;
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}
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/*
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* print a neighbor list.
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*/
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static int
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olsr_print_neighbor(netdissect_options *ndo,
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const u_char *msg_data, u_int hello_len)
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{
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int neighbor;
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ND_PRINT("\n\t neighbor\n\t\t");
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neighbor = 1;
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while (hello_len >= sizeof(nd_ipv4)) {
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/* print 4 neighbors per line */
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ND_PRINT("%s%s", GET_IPADDR_STRING(msg_data),
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neighbor % 4 == 0 ? "\n\t\t" : " ");
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msg_data += sizeof(nd_ipv4);
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hello_len -= sizeof(nd_ipv4);
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}
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return (0);
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}
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void
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olsr_print(netdissect_options *ndo,
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const u_char *pptr, u_int length, int is_ipv6)
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{
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union {
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const struct olsr_common *common;
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const struct olsr_msg4 *msg4;
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const struct olsr_msg6 *msg6;
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const struct olsr_hello *hello;
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const struct olsr_hello_link *hello_link;
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const struct olsr_tc *tc;
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const struct olsr_hna4 *hna;
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} ptr;
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u_int msg_type, msg_len, msg_tlen, hello_len;
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uint16_t name_entry_type, name_entry_len;
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u_int name_entry_padding;
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uint8_t link_type, neighbor_type;
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const u_char *tptr, *msg_data;
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ndo->ndo_protocol = "olsr";
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tptr = pptr;
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nd_print_protocol_caps(ndo);
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ND_PRINT("v%u", (is_ipv6) ? 6 : 4);
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if (length < sizeof(struct olsr_common)) {
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goto trunc;
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}
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ND_TCHECK_LEN(tptr, sizeof(struct olsr_common));
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ptr.common = (const struct olsr_common *)tptr;
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length = ND_MIN(length, GET_BE_U_2(ptr.common->packet_len));
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ND_PRINT(", seq 0x%04x, length %u",
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GET_BE_U_2(ptr.common->packet_seq),
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length);
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tptr += sizeof(struct olsr_common);
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/*
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* In non-verbose mode, just print version.
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*/
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if (ndo->ndo_vflag < 1) {
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return;
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}
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while (tptr < (pptr+length)) {
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union
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{
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const struct olsr_msg4 *v4;
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const struct olsr_msg6 *v6;
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} msgptr;
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int msg_len_valid = 0;
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if (is_ipv6)
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{
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ND_TCHECK_LEN(tptr, sizeof(struct olsr_msg6));
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msgptr.v6 = (const struct olsr_msg6 *) tptr;
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msg_type = GET_U_1(msgptr.v6->msg_type);
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msg_len = GET_BE_U_2(msgptr.v6->msg_len);
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if ((msg_len >= sizeof (struct olsr_msg6))
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&& (msg_len <= length))
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msg_len_valid = 1;
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/* infinite loop check */
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if (msg_type == 0 || msg_len == 0) {
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return;
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}
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ND_PRINT("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
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"\n\t vtime %.3fs, msg-seq 0x%04x, length %u%s",
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tok2str(olsr_msg_values, "Unknown", msg_type),
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msg_type, GET_IP6ADDR_STRING(msgptr.v6->originator),
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GET_U_1(msgptr.v6->ttl),
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GET_U_1(msgptr.v6->hopcount),
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ME_TO_DOUBLE(GET_U_1(msgptr.v6->vtime)),
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GET_BE_U_2(msgptr.v6->msg_seq),
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msg_len, (msg_len_valid == 0) ? " (invalid)" : "");
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if (!msg_len_valid) {
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return;
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}
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msg_tlen = msg_len - sizeof(struct olsr_msg6);
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msg_data = tptr + sizeof(struct olsr_msg6);
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}
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else /* (!is_ipv6) */
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{
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ND_TCHECK_LEN(tptr, sizeof(struct olsr_msg4));
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msgptr.v4 = (const struct olsr_msg4 *) tptr;
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msg_type = GET_U_1(msgptr.v4->msg_type);
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msg_len = GET_BE_U_2(msgptr.v4->msg_len);
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if ((msg_len >= sizeof (struct olsr_msg4))
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&& (msg_len <= length))
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msg_len_valid = 1;
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/* infinite loop check */
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if (msg_type == 0 || msg_len == 0) {
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return;
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}
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ND_PRINT("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
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"\n\t vtime %.3fs, msg-seq 0x%04x, length %u%s",
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tok2str(olsr_msg_values, "Unknown", msg_type),
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msg_type, GET_IPADDR_STRING(msgptr.v4->originator),
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GET_U_1(msgptr.v4->ttl),
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GET_U_1(msgptr.v4->hopcount),
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ME_TO_DOUBLE(GET_U_1(msgptr.v4->vtime)),
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GET_BE_U_2(msgptr.v4->msg_seq),
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msg_len, (msg_len_valid == 0) ? " (invalid)" : "");
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if (!msg_len_valid) {
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return;
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}
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msg_tlen = msg_len - sizeof(struct olsr_msg4);
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msg_data = tptr + sizeof(struct olsr_msg4);
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}
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switch (msg_type) {
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case OLSR_HELLO_MSG:
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case OLSR_HELLO_LQ_MSG:
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if (msg_tlen < sizeof(struct olsr_hello))
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goto trunc;
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ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hello));
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ptr.hello = (const struct olsr_hello *)msg_data;
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ND_PRINT("\n\t hello-time %.3fs, MPR willingness %u",
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ME_TO_DOUBLE(GET_U_1(ptr.hello->htime)),
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GET_U_1(ptr.hello->will));
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msg_data += sizeof(struct olsr_hello);
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msg_tlen -= sizeof(struct olsr_hello);
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while (msg_tlen >= sizeof(struct olsr_hello_link)) {
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int hello_len_valid = 0;
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/*
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* link-type.
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*/
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ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hello_link));
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ptr.hello_link = (const struct olsr_hello_link *)msg_data;
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hello_len = GET_BE_U_2(ptr.hello_link->len);
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link_type = OLSR_EXTRACT_LINK_TYPE(GET_U_1(ptr.hello_link->link_code));
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neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(GET_U_1(ptr.hello_link->link_code));
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if ((hello_len <= msg_tlen)
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&& (hello_len >= sizeof(struct olsr_hello_link)))
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hello_len_valid = 1;
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ND_PRINT("\n\t link-type %s, neighbor-type %s, len %u%s",
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tok2str(olsr_link_type_values, "Unknown", link_type),
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tok2str(olsr_neighbor_type_values, "Unknown", neighbor_type),
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hello_len,
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(hello_len_valid == 0) ? " (invalid)" : "");
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if (hello_len_valid == 0)
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break;
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msg_data += sizeof(struct olsr_hello_link);
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msg_tlen -= sizeof(struct olsr_hello_link);
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hello_len -= sizeof(struct olsr_hello_link);
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ND_TCHECK_LEN(msg_data, hello_len);
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if (msg_type == OLSR_HELLO_MSG) {
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if (olsr_print_neighbor(ndo, msg_data, hello_len) == -1)
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goto trunc;
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} else {
|
|
if (is_ipv6) {
|
|
if (olsr_print_lq_neighbor6(ndo, msg_data, hello_len) == -1)
|
|
goto trunc;
|
|
} else {
|
|
if (olsr_print_lq_neighbor4(ndo, msg_data, hello_len) == -1)
|
|
goto trunc;
|
|
}
|
|
}
|
|
|
|
msg_data += hello_len;
|
|
msg_tlen -= hello_len;
|
|
}
|
|
break;
|
|
|
|
case OLSR_TC_MSG:
|
|
case OLSR_TC_LQ_MSG:
|
|
if (msg_tlen < sizeof(struct olsr_tc))
|
|
goto trunc;
|
|
ND_TCHECK_LEN(msg_data, sizeof(struct olsr_tc));
|
|
|
|
ptr.tc = (const struct olsr_tc *)msg_data;
|
|
ND_PRINT("\n\t advertised neighbor seq 0x%04x",
|
|
GET_BE_U_2(ptr.tc->ans_seq));
|
|
msg_data += sizeof(struct olsr_tc);
|
|
msg_tlen -= sizeof(struct olsr_tc);
|
|
|
|
if (msg_type == OLSR_TC_MSG) {
|
|
if (olsr_print_neighbor(ndo, msg_data, msg_tlen) == -1)
|
|
goto trunc;
|
|
} else {
|
|
if (is_ipv6) {
|
|
if (olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen) == -1)
|
|
goto trunc;
|
|
} else {
|
|
if (olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen) == -1)
|
|
goto trunc;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case OLSR_MID_MSG:
|
|
{
|
|
u_int addr_size = (u_int)sizeof(nd_ipv4);
|
|
|
|
if (is_ipv6)
|
|
addr_size = (u_int)sizeof(nd_ipv6);
|
|
|
|
while (msg_tlen >= addr_size) {
|
|
ND_TCHECK_LEN(msg_data, addr_size);
|
|
ND_PRINT("\n\t interface address %s",
|
|
is_ipv6 ? GET_IP6ADDR_STRING(msg_data) :
|
|
GET_IPADDR_STRING(msg_data));
|
|
|
|
msg_data += addr_size;
|
|
msg_tlen -= addr_size;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case OLSR_HNA_MSG:
|
|
if (is_ipv6)
|
|
{
|
|
int i = 0;
|
|
|
|
ND_PRINT("\n\t Advertised networks (total %u)",
|
|
(unsigned int) (msg_tlen / sizeof(struct olsr_hna6)));
|
|
|
|
while (msg_tlen >= sizeof(struct olsr_hna6)) {
|
|
const struct olsr_hna6 *hna6;
|
|
|
|
ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hna6));
|
|
|
|
hna6 = (const struct olsr_hna6 *)msg_data;
|
|
|
|
ND_PRINT("\n\t #%i: %s/%u",
|
|
i, GET_IP6ADDR_STRING(hna6->network),
|
|
mask62plen (hna6->mask));
|
|
|
|
msg_data += sizeof(struct olsr_hna6);
|
|
msg_tlen -= sizeof(struct olsr_hna6);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int col = 0;
|
|
|
|
ND_PRINT("\n\t Advertised networks (total %u)",
|
|
(unsigned int) (msg_tlen / sizeof(struct olsr_hna4)));
|
|
|
|
while (msg_tlen >= sizeof(struct olsr_hna4)) {
|
|
ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hna4));
|
|
|
|
ptr.hna = (const struct olsr_hna4 *)msg_data;
|
|
|
|
/* print 4 prefixes per line */
|
|
if (!ptr.hna->network[0] && !ptr.hna->network[1] &&
|
|
!ptr.hna->network[2] && !ptr.hna->network[3] &&
|
|
!ptr.hna->mask[GW_HNA_PAD] &&
|
|
ptr.hna->mask[GW_HNA_FLAGS]) {
|
|
/* smart gateway */
|
|
ND_PRINT("%sSmart-Gateway:%s%s%s%s%s %u/%u",
|
|
col == 0 ? "\n\t " : ", ", /* indent */
|
|
/* sgw */
|
|
/* LINKSPEED */
|
|
(ptr.hna->mask[GW_HNA_FLAGS] &
|
|
GW_HNA_FLAG_LINKSPEED) ? " LINKSPEED" : "",
|
|
/* IPV4 */
|
|
(ptr.hna->mask[GW_HNA_FLAGS] &
|
|
GW_HNA_FLAG_IPV4) ? " IPV4" : "",
|
|
/* IPV4-NAT */
|
|
(ptr.hna->mask[GW_HNA_FLAGS] &
|
|
GW_HNA_FLAG_IPV4_NAT) ? " IPV4-NAT" : "",
|
|
/* IPV6 */
|
|
(ptr.hna->mask[GW_HNA_FLAGS] &
|
|
GW_HNA_FLAG_IPV6) ? " IPV6" : "",
|
|
/* IPv6PREFIX */
|
|
(ptr.hna->mask[GW_HNA_FLAGS] &
|
|
GW_HNA_FLAG_IPV6PREFIX) ? " IPv6-PREFIX" : "",
|
|
/* uplink */
|
|
(ptr.hna->mask[GW_HNA_FLAGS] &
|
|
GW_HNA_FLAG_LINKSPEED) ?
|
|
deserialize_gw_speed(ptr.hna->mask[GW_HNA_UPLINK]) : 0,
|
|
/* downlink */
|
|
(ptr.hna->mask[GW_HNA_FLAGS] &
|
|
GW_HNA_FLAG_LINKSPEED) ?
|
|
deserialize_gw_speed(ptr.hna->mask[GW_HNA_DOWNLINK]) : 0
|
|
);
|
|
} else {
|
|
/* normal route */
|
|
ND_PRINT("%s%s/%u",
|
|
col == 0 ? "\n\t " : ", ",
|
|
GET_IPADDR_STRING(ptr.hna->network),
|
|
mask2plen(GET_BE_U_4(ptr.hna->mask)));
|
|
}
|
|
|
|
msg_data += sizeof(struct olsr_hna4);
|
|
msg_tlen -= sizeof(struct olsr_hna4);
|
|
|
|
col = (col + 1) % 4;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case OLSR_NAMESERVICE_MSG:
|
|
{
|
|
u_int name_entries;
|
|
u_int addr_size;
|
|
int name_entries_valid;
|
|
u_int i;
|
|
|
|
if (msg_tlen < 4)
|
|
goto trunc;
|
|
|
|
name_entries = GET_BE_U_2(msg_data + 2);
|
|
addr_size = 4;
|
|
if (is_ipv6)
|
|
addr_size = 16;
|
|
|
|
name_entries_valid = 0;
|
|
if ((name_entries > 0)
|
|
&& ((name_entries * (4 + addr_size)) <= msg_tlen))
|
|
name_entries_valid = 1;
|
|
|
|
ND_PRINT("\n\t Version %u, Entries %u%s",
|
|
GET_BE_U_2(msg_data),
|
|
name_entries, (name_entries_valid == 0) ? " (invalid)" : "");
|
|
|
|
if (name_entries_valid == 0)
|
|
break;
|
|
|
|
msg_data += 4;
|
|
msg_tlen -= 4;
|
|
|
|
for (i = 0; i < name_entries; i++) {
|
|
int name_entry_len_valid = 0;
|
|
|
|
if (msg_tlen < 4)
|
|
break;
|
|
|
|
name_entry_type = GET_BE_U_2(msg_data);
|
|
name_entry_len = GET_BE_U_2(msg_data + 2);
|
|
|
|
msg_data += 4;
|
|
msg_tlen -= 4;
|
|
|
|
if ((name_entry_len > 0) && ((addr_size + name_entry_len) <= msg_tlen))
|
|
name_entry_len_valid = 1;
|
|
|
|
ND_PRINT("\n\t #%u: type %#06x, length %u%s",
|
|
(unsigned int) i, name_entry_type,
|
|
name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : "");
|
|
|
|
if (name_entry_len_valid == 0)
|
|
break;
|
|
|
|
/* 32-bit alignment */
|
|
name_entry_padding = 0;
|
|
if (name_entry_len%4 != 0)
|
|
name_entry_padding = 4-(name_entry_len%4);
|
|
|
|
if (msg_tlen < addr_size + name_entry_len + name_entry_padding)
|
|
goto trunc;
|
|
|
|
ND_TCHECK_LEN(msg_data,
|
|
addr_size + name_entry_len + name_entry_padding);
|
|
|
|
if (is_ipv6)
|
|
ND_PRINT(", address %s, name \"",
|
|
GET_IP6ADDR_STRING(msg_data));
|
|
else
|
|
ND_PRINT(", address %s, name \"",
|
|
GET_IPADDR_STRING(msg_data));
|
|
(void)nd_printn(ndo, msg_data + addr_size, name_entry_len, NULL);
|
|
ND_PRINT("\"");
|
|
|
|
msg_data += addr_size + name_entry_len + name_entry_padding;
|
|
msg_tlen -= addr_size + name_entry_len + name_entry_padding;
|
|
} /* for (i = 0; i < name_entries; i++) */
|
|
break;
|
|
} /* case OLSR_NAMESERVICE_MSG */
|
|
|
|
/*
|
|
* FIXME those are the defined messages that lack a decoder
|
|
* you are welcome to contribute code ;-)
|
|
*/
|
|
case OLSR_POWERINFO_MSG:
|
|
default:
|
|
print_unknown_data(ndo, msg_data, "\n\t ", msg_tlen);
|
|
break;
|
|
} /* switch (msg_type) */
|
|
tptr += msg_len;
|
|
} /* while (tptr < (pptr+length)) */
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|