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/*
* netsniff-ng - the packet sniffing beast
* Copyright 2012 Markus Amend <markus@netsniff-ng.org>, Deutsche Flugsicherung GmbH
* Subject to the GPL, version 2.
*
* ICMPv6 described in RFC4443, RFC2710, RFC4861, RFC2894,
* RFC4620, RFC3122, RFC3810, RFC3775, RFC3971, RFC4065
* RFC4286
* Look also for an good overview:
* http://www.iana.org/assignments/icmpv6-parameters
*/
#include <inttypes.h>
#include <stdio.h>
#include <stdint.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <asm/byteorder.h>
#include "proto.h"
#include "protos.h"
#include "pkt_buff.h"
#include "built_in.h"
#define icmpv6_code_range_valid(code, sarr) ((size_t) (code) < array_size((sarr)))
struct icmpv6_general_hdr {
uint8_t h_type;
uint8_t h_code;
uint16_t h_chksum;
} __packed;
/* for type 0x01 and 0x03 */
struct icmpv6_type_1_3 {
uint32_t unused;
uint8_t invoking_pkt[0];
} __packed;
struct icmpv6_type_2 {
uint32_t MTU;
uint8_t invoking_pkt[0];
} __packed;
struct icmpv6_type_4 {
uint32_t pointer;
uint8_t invoking_pkt[0];
} __packed;
struct icmpv6_type_128_129 {
uint16_t id;
uint16_t sn;
uint8_t data[0];
} __packed;
/* MLDv1 msg */
struct icmpv6_type_130_131_132 {
uint16_t maxrespdel;
uint16_t res;
struct in6_addr ipv6_addr;
} __packed;
/* end MLDv1 msg */
struct icmpv6_type_130_mldv2 {
uint8_t resv_S_QRV;
uint8_t QQIC;
uint16_t nr_src;
struct in6_addr ipv6_addr[0];
} __packed;
/* Neighbor Discovery msg */
struct icmpv6_type_133_141_142 {
uint32_t res;
uint8_t ops[0];
} __packed;
struct icmpv6_type_134 {
uint8_t cur_hop_limit;
uint8_t m_o_res;
uint16_t router_lifetime;
uint32_t reachable_time;
uint32_t retrans_timer;
uint8_t ops[0];
} __packed;
struct icmpv6_type_135 {
uint32_t res;
struct in6_addr ipv6_addr;
uint8_t ops[0];
} __packed;
struct icmpv6_type_136 {
uint32_t r_s_o_res;
struct in6_addr ipv6_addr;
uint8_t ops[0];
} __packed;
struct icmpv6_type_137 {
uint32_t res;
struct in6_addr ipv6_targ_addr;
struct in6_addr ipv6_dest_addr;
uint8_t ops[0];
} __packed;
struct icmpv6_neighb_disc_ops_general {
uint8_t type;
uint8_t len;
uint8_t ops[0];
} __packed;
struct icmpv6_neighb_disc_ops_type_1_2 {
uint8_t link_lay_addr[0];
} __packed;
struct icmpv6_neighb_disc_ops_type_3 {
uint8_t prefix_len;
uint8_t l_a_res1;
uint32_t valid_lifetime;
uint32_t preferred_lifetime;
uint32_t res2;
struct in6_addr prefix;
} __packed;
struct icmpv6_neighb_disc_ops_type_4 {
uint16_t res1;
uint32_t res2;
uint8_t ip_hdr_data[0];
} __packed;
struct icmpv6_neighb_disc_ops_type_5 {
uint16_t res1;
uint32_t MTU;
} __packed;
struct icmpv6_neighb_disc_ops_type_9_10 {
uint16_t res1;
uint32_t res2;
uint8_t ip_hdr_data[0];
} __packed;
struct icmpv6_neighb_disc_ops_type_15 {
uint8_t name_type;
size_t pad_len;
char name[0];
uint8_t pad[0];
} __packed;
struct icmpv6_neighb_disc_ops_type_16 {
uint8_t cert_type;
uint8_t res;
uint8_t cert[0];
uint8_t pad[0];
} __packed;
struct icmpv6_neighb_disc_ops_type_17 {
uint8_t opt_code;
uint8_t prefix_len;
uint8_t data[0];
} __packed;
struct icmpv6_neighb_disc_ops_type_17_1 {
uint32_t res;
struct in6_addr ipv6_addr;
} __packed;
struct icmpv6_neighb_disc_ops_type_17_2 {
struct in6_addr ipv6_addr;
} __packed;
struct icmpv6_neighb_disc_ops_type_19 {
uint8_t opt_code;
uint8_t lla[0];
} __packed;
/* end Neighbor Discovery msg */
struct icmpv6_type_138 {
uint32_t seq_nr;
uint8_t seg_nr;
uint8_t flags;
uint16_t maxdelay;
uint32_t res;
} __packed;
/* Node Information Queries */
struct icmpv6_type_139_140 {
uint16_t qtype;
uint16_t flags;
uint64_t nonce;
uint8_t data[0];
} __packed;
/* end Node Information Queries */
/* MLDv2 report */
struct icmpv6_type_143 {
uint16_t res;
uint16_t nr_rec;
uint8_t addr_rec[0];
} __packed;
struct icmpv6_mldv2_addr_rec {
uint8_t rec_type;
uint8_t aux_data_len;
uint16_t nr_src;
struct in6_addr multic_addr;
struct in6_addr src_addr[0];
} __packed;
/* end MLDv2 report */
/* ICMP Mobility Support */
struct icmpv6_type_144_146 {
uint16_t id;
uint16_t res;
} __packed;
struct icmpv6_type_145 {
uint16_t id;
uint16_t res;
struct in6_addr home_agent_addr[0];
} __packed;
struct icmpv6_type_147 {
uint16_t id;
uint16_t m_o_res;
uint8_t ops[0];
} __packed;
/* end ICMP Mobility Support */
/* SEcure Neighbor Discovery */
struct icmpv6_type_148 {
uint16_t id;
uint16_t comp;
uint8_t ops[0];
} __packed;
struct icmpv6_type_149 {
uint16_t id;
uint16_t all_comp;
uint16_t comp;
uint16_t res;
uint8_t ops[0];
} __packed;
/* end SEcure Neighbor Discovery */
struct icmpv6_type_150 {
union {
uint32_t subtype_res;
struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
uint32_t res :24,
subtype :8;
#elif defined(__BIG_ENDIAN_BITFIELD)
uint32_t subtype :8,
res :24;
#else
# error "Please fix <asm/byteorder.h>"
#endif
};
};
uint8_t ops[0];
} __packed;
/* Multicast Router Discovery */
struct icmpv6_type_151 {
uint16_t query_intv;
uint16_t rob_var;
} __packed;
struct icmpv6_type_152 {
uint8_t null[0];
} __packed;
struct icmpv6_type_153 {
uint8_t null[0];
} __packed;
/* end Multicast Router Discovery */
struct icmpv6_type_154 {
uint8_t subtype;
uint8_t res;
uint16_t id;
uint8_t ops[0];
} __packed;
static int8_t print_ipv6_addr_list(struct pkt_buff *pkt, uint8_t nr_addr)
{
char address[INET6_ADDRSTRLEN];
struct in6_addr *addr;
while (nr_addr--) {
addr = (struct in6_addr *) pkt_pull(pkt, sizeof(*addr));
if (addr == NULL)
return 0;
tprintf("\n\t Address: %s",
inet_ntop(AF_INET6, addr, address,
sizeof(address)));
}
return 1;
}
static const char *icmpv6_mcast_rec_types[] = {
"MODE_IS_INCLUDE",
"MODE_IS_EXCLUDE",
"CHANGE_TO_INCLUDE_MODE",
"CHANGE_TO_EXCLUDE_MODE",
"ALLOW_NEW_SOURCES",
"BLOCK_OLD_SOURCES",
};
static int8_t dissect_icmpv6_mcast_rec(struct pkt_buff *pkt,
uint16_t nr_rec)
{
uint16_t nr_src, aux_data_len_bytes;
char address[INET6_ADDRSTRLEN];
struct icmpv6_mldv2_addr_rec *addr_rec;
while (nr_rec--) {
addr_rec = (struct icmpv6_mldv2_addr_rec *)
pkt_pull(pkt,sizeof(*addr_rec));
if (addr_rec == NULL)
return 0;
aux_data_len_bytes = addr_rec->aux_data_len * 4;
nr_src = ntohs(addr_rec->nr_src);
tprintf(", Rec Type %s (%u)",
icmpv6_code_range_valid(addr_rec->rec_type - 1,
icmpv6_mcast_rec_types) ?
icmpv6_mcast_rec_types[addr_rec->rec_type - 1]
: "Unknown", addr_rec->rec_type);
if (aux_data_len_bytes > pkt_len(pkt)) {
tprintf(", Aux Data Len (%u, %u bytes) %s",
addr_rec->aux_data_len,
aux_data_len_bytes,
colorize_start_full(black, red) "invalid"
colorize_end());
return 0;
}
tprintf(", Aux Data Len (%u, %u bytes)",addr_rec->aux_data_len,
aux_data_len_bytes);
tprintf(", Nr. of Sources (%u)",nr_src);
tprintf(", Address: %s",
inet_ntop(AF_INET6, &addr_rec->multic_addr,
address, sizeof(address)));
if(!print_ipv6_addr_list(pkt, nr_src))
return 0;
if (aux_data_len_bytes > pkt_len(pkt)) {
tprintf("\nAux Data Len %s",
colorize_start_full(black, red) "invalid"
colorize_end());
return 0;
}
tprintf(", Aux Data: ");
while (aux_data_len_bytes--) {
uint8_t *data = pkt_pull(pkt, 1);
if (data == NULL) {
tprintf("%sINVALID%s", colorize_start_full(black, red),
colorize_end());
return 0;
}
tprintf("%x", *data);
}
}
return 1;
}
static int8_t dissect_neighb_disc_ops_1(struct pkt_buff *pkt,
ssize_t len)
{
struct icmpv6_neighb_disc_ops_type_1_2 *icmp_neighb_disc_1;
icmp_neighb_disc_1 = (struct icmpv6_neighb_disc_ops_type_1_2 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_1));
if (icmp_neighb_disc_1 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_1);
if (len < 0)
return 0;
tprintf("Address 0x");
while (len--) {
uint8_t *data = pkt_pull(pkt, 1);
if (data == NULL) {
tprintf("%sINVALID%s", colorize_start_full(black, red),
colorize_end());
return 0;
}
tprintf("%x", *data);
}
return 1;
}
static int8_t dissect_neighb_disc_ops_2(struct pkt_buff *pkt,
ssize_t len)
{
return dissect_neighb_disc_ops_1(pkt, len);
}
static int8_t dissect_neighb_disc_ops_3(struct pkt_buff *pkt,
ssize_t len)
{
char address[INET6_ADDRSTRLEN];
struct icmpv6_neighb_disc_ops_type_3 *icmp_neighb_disc_3;
icmp_neighb_disc_3 = (struct icmpv6_neighb_disc_ops_type_3 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_3));
if (icmp_neighb_disc_3 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_3);
if (len < 0)
return 0;
tprintf("Prefix Len (%u) ",icmp_neighb_disc_3->prefix_len);
tprintf("L (%u) A (%u) Res1 (0x%x) ",icmp_neighb_disc_3->l_a_res1 >> 7,
(icmp_neighb_disc_3->l_a_res1 >> 7) & 0x1,
icmp_neighb_disc_3->l_a_res1 & 0x3F);
tprintf("Valid Lifetime (%us) ",
ntohl(icmp_neighb_disc_3->valid_lifetime));
tprintf("Preferred Lifetime (%us) ",
ntohl(icmp_neighb_disc_3->preferred_lifetime));
tprintf("Reserved2 (0x%x) ",
ntohl(icmp_neighb_disc_3->res2));
tprintf("Prefix: %s ",
inet_ntop(AF_INET6,&icmp_neighb_disc_3->prefix,
address, sizeof(address)));
return 1;
}
static int8_t dissect_neighb_disc_ops_4(struct pkt_buff *pkt,
ssize_t len)
{
struct icmpv6_neighb_disc_ops_type_4 *icmp_neighb_disc_4;
icmp_neighb_disc_4 = (struct icmpv6_neighb_disc_ops_type_4 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_4));
if (icmp_neighb_disc_4 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_4);
if (len < 0)
return 0;
tprintf("Reserved 1 (0x%x) ", ntohs(icmp_neighb_disc_4->res1));
tprintf("Reserved 2 (0x%x) ", ntohl(icmp_neighb_disc_4->res2));
tprintf("IP header + data ");
while (len--) {
uint8_t *data = pkt_pull(pkt, 1);
if (data == NULL) {
tprintf("%sINVALID%s", colorize_start_full(black, red),
colorize_end());
return 0;
}
tprintf("%x", *data);
}
return 1;
}
static int8_t dissect_neighb_disc_ops_5(struct pkt_buff *pkt,
ssize_t len)
{
struct icmpv6_neighb_disc_ops_type_5 *icmp_neighb_disc_5;
icmp_neighb_disc_5 = (struct icmpv6_neighb_disc_ops_type_5 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_5));
if (icmp_neighb_disc_5 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_5);
if (len < 0)
return 0;
tprintf("Reserved (0x%x) ", ntohs(icmp_neighb_disc_5->res1));
tprintf("MTU (%u)", ntohl(icmp_neighb_disc_5->MTU));
return 1;
}
static int8_t dissect_neighb_disc_ops_9(struct pkt_buff *pkt,
ssize_t len)
{
struct icmpv6_neighb_disc_ops_type_9_10 *icmp_neighb_disc_9;
icmp_neighb_disc_9 = (struct icmpv6_neighb_disc_ops_type_9_10 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_9));
if (icmp_neighb_disc_9 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_9);
if (len < 0)
return 0;
tprintf("Reserved 1 (0x%x) ", ntohs(icmp_neighb_disc_9->res1));
tprintf("Reserved 2 (0x%x) ", ntohl(icmp_neighb_disc_9->res2));
return print_ipv6_addr_list(pkt, len / sizeof(struct in6_addr));
}
static int8_t dissect_neighb_disc_ops_10(struct pkt_buff *pkt,
ssize_t len)
{
return dissect_neighb_disc_ops_9(pkt, len);
}
static const char *icmpv6_neighb_disc_ops_15_name[] = {
"DER Encoded X.501 Name",
"FQDN",
};
static int8_t dissect_neighb_disc_ops_15(struct pkt_buff *pkt,
ssize_t len)
{
size_t pad_len;
ssize_t name_len;
struct icmpv6_neighb_disc_ops_type_15 *icmp_neighb_disc_15;
icmp_neighb_disc_15 = (struct icmpv6_neighb_disc_ops_type_15 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_15));
if (icmp_neighb_disc_15 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_15);
if (len < 0)
return 0;
pad_len = icmp_neighb_disc_15->pad_len;
tprintf("Name Type %s (%u) ",
icmpv6_code_range_valid(icmp_neighb_disc_15->name_type - 1,
icmpv6_neighb_disc_ops_15_name) ?
icmpv6_neighb_disc_ops_15_name[
icmp_neighb_disc_15->name_type - 1] : "Unknown",
icmp_neighb_disc_15->name_type);
if (pad_len > (size_t) len) {
tprintf("Pad Len (%zu, invalid)\n%s", pad_len,
colorize_start_full(black, red)
"Skip Option" colorize_end());
pkt_pull(pkt, len);
return 1;
}
else
tprintf("Pad Len (%zu) ", pad_len);
name_len = len - pad_len;
tprintf("Name (");
while (name_len--) {
uint8_t *data = pkt_pull(pkt, 1);
if (data == NULL) {
tprintf("%sINVALID%s", colorize_start_full(black, red),
colorize_end());
return 0;
}
tprintf("%c", *data);
}
tprintf(") ");
tprintf("Padding (");
while (pad_len--) {
uint8_t *data = pkt_pull(pkt, 1);
if (data == NULL) {
tprintf("%sINVALID%s", colorize_start_full(black, red),
colorize_end());
break;
}
tprintf("%x", *data);
}
tprintf(")");
return 1;
}
static const char *icmpv6_neighb_disc_ops_16_cert[] = {
"X.509v3 Certificate",
};
static int8_t dissect_neighb_disc_ops_16(struct pkt_buff *pkt,
ssize_t len)
{
struct icmpv6_neighb_disc_ops_type_16 *icmp_neighb_disc_16;
icmp_neighb_disc_16 = (struct icmpv6_neighb_disc_ops_type_16 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_16));
if (icmp_neighb_disc_16 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_16);
if (len < 0)
return 0;
tprintf("Cert Type %s (%u) ",
icmpv6_code_range_valid(icmp_neighb_disc_16->cert_type - 1,
icmpv6_neighb_disc_ops_16_cert) ?
icmpv6_neighb_disc_ops_16_cert[
icmp_neighb_disc_16->cert_type - 1] : "Unknown",
icmp_neighb_disc_16->cert_type);
tprintf("Res (0x%x) ", icmp_neighb_disc_16->res);
tprintf("Certificate + Padding (");
while (len--) {
uint8_t *data = pkt_pull(pkt, 1);
if (data == NULL) {
tprintf("%sINVALID%s", colorize_start_full(black, red),
colorize_end());
break;
}
tprintf("%x", *data);
}
tprintf(") ");
return 1;
}
static const char *icmpv6_neighb_disc_ops_17_codes[] = {
"Old Care-of Address",
"New Care-of Address",
"NAR's IP address",
"NAR's Prefix",
};
static int8_t dissect_neighb_disc_ops_17(struct pkt_buff *pkt,
ssize_t len)
{
char address[INET6_ADDRSTRLEN];
struct icmpv6_neighb_disc_ops_type_17 *icmp_neighb_disc_17;
icmp_neighb_disc_17 = (struct icmpv6_neighb_disc_ops_type_17 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_17));
if (icmp_neighb_disc_17 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_17);
if (len < 0)
return 0;
tprintf("Opt Code %s (%u) ",
icmpv6_code_range_valid(icmp_neighb_disc_17->opt_code - 1,
icmpv6_neighb_disc_ops_17_codes) ?
icmpv6_neighb_disc_ops_17_codes[
icmp_neighb_disc_17->opt_code - 1] : "Unknown",
icmp_neighb_disc_17->opt_code);
tprintf("Prefix Len (%u) ", icmp_neighb_disc_17->prefix_len);
if (len == sizeof(struct icmpv6_neighb_disc_ops_type_17_1)) {
struct icmpv6_neighb_disc_ops_type_17_1
*icmp_neighb_disc_17_1;
icmp_neighb_disc_17_1 =
(struct icmpv6_neighb_disc_ops_type_17_1 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_17_1));
if (icmp_neighb_disc_17_1 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_17_1);
if (len < 0)
return 0;
tprintf("Res (0x%x) ",icmp_neighb_disc_17_1->res);
tprintf("Addr: %s ",
inet_ntop(AF_INET6,&icmp_neighb_disc_17_1->ipv6_addr,
address, sizeof(address)));
}
else if (len == sizeof(struct icmpv6_neighb_disc_ops_type_17_2)) {
struct icmpv6_neighb_disc_ops_type_17_2
*icmp_neighb_disc_17_2;
icmp_neighb_disc_17_2 =
(struct icmpv6_neighb_disc_ops_type_17_2 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_17_2));
if (icmp_neighb_disc_17_2 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_17_2);
if (len < 0)
return 0;
tprintf("Addr: %s ",
inet_ntop(AF_INET6,&icmp_neighb_disc_17_2->ipv6_addr,
address, sizeof(address)));
}
else {
tprintf("%s (", colorize_start_full(black, red)
"Error Wrong Length. Skip Option" colorize_end());
while (len--) {
uint8_t *data = pkt_pull(pkt, 1);
if (data == NULL) {
tprintf("%sINVALID%s", colorize_start_full(black, red),
colorize_end());
break;
}
tprintf("%x", *data);
}
tprintf(") ");
}
return 1;
}
static const char *icmpv6_neighb_disc_ops_19_codes[] = {
"Wildcard requesting resolution for all nearby access points",
"Link-Layer Address of the New Access Point",
"Link-Layer Address of the MN",
"Link-Layer Address of the NAR",
"Link-Layer Address of the source of RtSolPr or PrRtAdv \
message",
"The access point identified by the LLA belongs to the \
current interface of the router",
"No prefix information available for the access point \
identified by the LLA",
"No fast handover support available for the access point \
identified by the LLA",
};
static int8_t dissect_neighb_disc_ops_19(struct pkt_buff *pkt,
ssize_t len)
{
struct icmpv6_neighb_disc_ops_type_19 *icmp_neighb_disc_19;
icmp_neighb_disc_19 = (struct icmpv6_neighb_disc_ops_type_19 *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc_19));
if (icmp_neighb_disc_19 == NULL)
return 0;
len -= sizeof(*icmp_neighb_disc_19);
if (len < 0)
return 0;
tprintf("Opt Code %s (%u) ",
icmpv6_code_range_valid(icmp_neighb_disc_19->opt_code,
icmpv6_neighb_disc_ops_19_codes) ?
icmpv6_neighb_disc_ops_19_codes[
icmp_neighb_disc_19->opt_code] : "Unknown",
icmp_neighb_disc_19->opt_code);
tprintf("LLA (");
while(len--) {
uint8_t *data = pkt_pull(pkt, 1);
if (data == NULL) {
tprintf("%sINVALID%s", colorize_start_full(black, red),
colorize_end());
return 0;
}
tprintf("%x", *data);
}
tprintf(") ");
return 1;
}
static inline char *icmpv6_neighb_disc_ops(uint8_t code) {
switch (code) {
case 1: return "Source Link-Layer Address";
case 2: return "Target Link-Layer Address";
case 3: return "Prefix Information";
case 4: return "Redirected Header";
case 5: return "MTU";
case 6: return "NBMA Shortcut Limit Option";
case 7: return "Advertisement Interval Option";
case 8: return "Home Agent Information Option";
case 9: return "Source Address List";
case 10: return "Target Address List";
case 11: return "CGA option";
case 12: return "RSA Signature option";
case 13: return "Timestamp option";
case 14: return "Nonce option";
case 15: return "Trust Anchor option";
case 16: return "Certificate option";
case 17: return "IP Address/Prefix Option";
case 18: return "New Router Prefix Information Option";
case 19: return "Link-layer Address Option";
case 20: return "Neighbor Advertisement Acknowledgment Option";
case 23: return "Prefix Information";
case 24: return "Redirected Header";
case 25: return "MTU";
case 26: return "NBMA Shortcut Limit Option";
case 27: return "Advertisement Interval Option";
case 28: return "Home Agent Information Option";
case 29: return "Source Address List";
case 30: return "Target Address List";
case 31: return "DNS Search List Option";
case 32: return "Proxy Signature (PS)";
case 138: return "CARD Request option";
case 139: return "CARD Reply option";
case 253: return "RFC3692-style Experiment 1";
case 254: return "RFC3692-style Experiment 2";
}
return NULL;
};
static int8_t dissect_neighb_disc_ops(struct pkt_buff *pkt)
{
size_t pad_bytes;
uint16_t ops_total_len;
ssize_t ops_payl_len;
struct icmpv6_neighb_disc_ops_general *icmp_neighb_disc;
while(pkt_len(pkt)) {
icmp_neighb_disc = (struct icmpv6_neighb_disc_ops_general *)
pkt_pull(pkt,sizeof(*icmp_neighb_disc));
if (icmp_neighb_disc == NULL)
return 0;
ops_total_len = icmp_neighb_disc->len * 8;
pad_bytes = (size_t) (ops_total_len % 8);
ops_payl_len = ops_total_len - sizeof(*icmp_neighb_disc) -
pad_bytes;
tprintf("\n\tOption %s (%u) ",
icmpv6_neighb_disc_ops(icmp_neighb_disc->type) ?
icmpv6_neighb_disc_ops(icmp_neighb_disc->type)
: "Type Unknown", icmp_neighb_disc->type);
if (ops_payl_len > pkt_len(pkt) || ops_payl_len < 0) {
tprintf("Length (%u, %u bytes, %s%s%s) ",
icmp_neighb_disc->len,
ops_total_len,
colorize_start_full(black, red),
"invalid", colorize_end());
return 0;
}
tprintf("Length (%u, %u bytes) ",icmp_neighb_disc->len,
ops_total_len);
switch (icmp_neighb_disc->type) {
case 1:
if (!dissect_neighb_disc_ops_1(pkt, ops_payl_len))
return 0;
break;
case 2:
if (!dissect_neighb_disc_ops_2(pkt, ops_payl_len))
return 0;
break;
case 3:
if (!dissect_neighb_disc_ops_3(pkt, ops_payl_len))
return 0;
break;
case 4:
if (!dissect_neighb_disc_ops_4(pkt, ops_payl_len))
return 0;
break;
case 5:
if (!dissect_neighb_disc_ops_5(pkt, ops_payl_len))
return 0;
break;
/* Type 9 and 10 defined in
* http://tools.ietf.org/html/rfc3122#section-3.1
*/
case 9:
if (!dissect_neighb_disc_ops_9(pkt, ops_payl_len))
return 0;
break;
case 10:
if (!dissect_neighb_disc_ops_10(pkt, ops_payl_len))
return 0;
break;
/* Type 15 and 16 defined in
* http://tools.ietf.org/html/rfc3971#section-6.4.3
* http://tools.ietf.org/html/rfc3971#section-6.4.4
*/
case 15:
if (!dissect_neighb_disc_ops_15(pkt, ops_payl_len))
return 0;
break;
case 16:
if (!dissect_neighb_disc_ops_16(pkt, ops_payl_len))
return 0;
break;
/* Type 17 and 19 defined in
* http://tools.ietf.org/html/rfc5568#section-6.4
*/
case 17:
if (!dissect_neighb_disc_ops_17(pkt, ops_payl_len))
return 0;
break;
case 19:
if (!dissect_neighb_disc_ops_19(pkt, ops_payl_len))
return 0;
break;
default:
pkt_pull(pkt, ops_payl_len);
}
/* Skip Padding Bytes */
if (pad_bytes > pkt_len(pkt)) {
tprintf(" %s",colorize_start_full(black, red)
"Invalid Padding" colorize_end());
return 0;
}
pkt_pull(pkt, pad_bytes);
}
return 1;
}
static const char *icmpv6_type_1_codes[] = {
"No route to destination",
"Communication with destination administratively prohibited",
"Beyond scope of source address",
"Address unreachable",
"Port unreachable",
"Source address failed ingress/egress policy",
"Reject route to destination",
"Error in Source Routing Header",
};
static int8_t dissect_icmpv6_type1(struct pkt_buff *pkt)
{
struct icmpv6_type_1_3 *icmp_1;
icmp_1 = (struct icmpv6_type_1_3 *) pkt_pull(pkt,sizeof(*icmp_1));
if (icmp_1 == NULL)
return 0;
tprintf(", Unused (0x%x)",ntohl(icmp_1->unused));
tprintf(" Payload include as much of invoking packet");
return 1;
}
static int8_t dissect_icmpv6_type2(struct pkt_buff *pkt)
{
struct icmpv6_type_2 *icmp_2;
icmp_2 = (struct icmpv6_type_2 *) pkt_pull(pkt,sizeof(*icmp_2));
if (icmp_2 == NULL)
return 0;
tprintf(", MTU (0x%x)",ntohl(icmp_2->MTU));
tprintf(" Payload include as much of invoking packet");
return 1;
}
static const char *icmpv6_type_3_codes[] = {
"Hop limit exceeded in transit",
"Fragment reassembly time exceeded",
};
static int8_t dissect_icmpv6_type3(struct pkt_buff *pkt)
{
struct icmpv6_type_1_3 *icmp_3;
icmp_3 = (struct icmpv6_type_1_3 *) pkt_pull(pkt,sizeof(*icmp_3));
if (icmp_3 == NULL)
return 0;
tprintf(", Unused (0x%x)",ntohl(icmp_3->unused));
tprintf(" Payload include as much of invoking packet");
return 1;
}
static const char *icmpv6_type_4_codes[] = {
"Erroneous header field encountered",
"Unrecognized Next Header type encountered",
"Unrecognized IPv6 option encountered",
};
static int8_t dissect_icmpv6_type4(struct pkt_buff *pkt)
{
struct icmpv6_type_4 *icmp_4;
icmp_4 = (struct icmpv6_type_4 *) pkt_pull(pkt,sizeof(*icmp_4));
if (icmp_4 == NULL)
return 0;
tprintf(", Pointer (0x%x)",ntohl(icmp_4->pointer));
tprintf(" Payload include as much of invoking packet");
return 1;
}
static int8_t dissect_icmpv6_type128(struct pkt_buff *pkt)
{
struct icmpv6_type_128_129 *icmp_128;
icmp_128 = (struct icmpv6_type_128_129 *)
pkt_pull(pkt,sizeof(*icmp_128));
if (icmp_128 == NULL)
return 0;
tprintf(", ID (0x%x)",ntohs(icmp_128->id));
tprintf(", Seq. Nr. (%u)",ntohs(icmp_128->sn));
tprintf(" Payload include Data");
return 1;
}
static int8_t dissect_icmpv6_type129(struct pkt_buff *pkt)
{
struct icmpv6_type_128_129 *icmp_129;
icmp_129 = (struct icmpv6_type_128_129 *)
pkt_pull(pkt,sizeof(*icmp_129));
if (icmp_129 == NULL)
return 0;
tprintf(", ID (0x%x)",ntohs(icmp_129->id));
tprintf(", Seq. Nr. (%u)",ntohs(icmp_129->sn));
tprintf(" Payload include Data");
return 1;
}
static int8_t dissect_icmpv6_type130(struct pkt_buff *pkt)
{
char address[INET6_ADDRSTRLEN];
uint16_t nr_src, maxrespdel;
uint8_t switch_mldv2 = 0;
struct icmpv6_type_130_131_132 *icmp_130;
icmp_130 = (struct icmpv6_type_130_131_132 *)
pkt_pull(pkt,sizeof(*icmp_130));
if (icmp_130 == NULL)
return 0;
maxrespdel = ntohs(icmp_130->maxrespdel);
if(pkt_len(pkt) >= sizeof(struct icmpv6_type_130_mldv2))
switch_mldv2 = 1;
if(switch_mldv2)
tprintf(", MLDv2, Max Resp Delay (%ums)", maxrespdel >> 15 ?
(((maxrespdel & 0xFFF) | 0x1000) <<
(((maxrespdel >> 12) & 0x3) + 3)) : maxrespdel);
else
tprintf(", Max Resp Delay (%ums)",maxrespdel);
tprintf(", Res (0x%x)",ntohs(icmp_130->res));
tprintf(", Address: %s",
inet_ntop(AF_INET6, &icmp_130->ipv6_addr,
address, sizeof(address)));
if(switch_mldv2) {
struct icmpv6_type_130_mldv2 *icmp_130_mldv2;
icmp_130_mldv2 = (struct icmpv6_type_130_mldv2 *)
pkt_pull(pkt,sizeof(*icmp_130_mldv2));
if (icmp_130_mldv2 == NULL)
return 0;
nr_src = ntohs(icmp_130_mldv2->nr_src);
tprintf(", Resv (0x%x)",icmp_130_mldv2->resv_S_QRV >> 4);
tprintf(", S (%u)",(icmp_130_mldv2->resv_S_QRV >> 3) & 0x1);
tprintf(", QRV (0x%x)",icmp_130_mldv2->resv_S_QRV & 0x3);
tprintf(", QQIC (%u)",icmp_130_mldv2->QQIC);
tprintf(", Nr Src (%u)",nr_src);
return print_ipv6_addr_list(pkt, nr_src);
}
return 1;
}
static int8_t dissect_icmpv6_type131(struct pkt_buff *pkt)
{
char address[INET6_ADDRSTRLEN];
struct icmpv6_type_130_131_132 *icmp_131;
icmp_131 = (struct icmpv6_type_130_131_132 *)
pkt_pull(pkt,sizeof(*icmp_131));
if (icmp_131 == NULL)
return 0;
tprintf(", Max Resp Delay (%ums)",ntohs(icmp_131->maxrespdel));
tprintf(", Res (0x%x)",ntohs(icmp_131->res));
tprintf(", Address: %s",
inet_ntop(AF_INET6, &icmp_131->ipv6_addr,
address, sizeof(address)));
return 1;
}
static inline int8_t dissect_icmpv6_type132(struct pkt_buff *pkt)
{
return dissect_icmpv6_type131(pkt);
}
static int8_t dissect_icmpv6_type133(struct pkt_buff *pkt)
{
struct icmpv6_type_133_141_142 *icmp_133;
icmp_133 = (struct icmpv6_type_133_141_142 *)
pkt_pull(pkt,sizeof(*icmp_133));
if (icmp_133 == NULL)
return 0;
tprintf(", Reserved (0x%x)",ntohl(icmp_133->res));
return dissect_neighb_disc_ops(pkt);
}
static int8_t dissect_icmpv6_type134(struct pkt_buff *pkt)
{
struct icmpv6_type_134 *icmp_134;
icmp_134 = (struct icmpv6_type_134 *)
pkt_pull(pkt,sizeof(*icmp_134));
if (icmp_134 == NULL)
return 0;
tprintf(", Cur Hop Limit (%u)",icmp_134->cur_hop_limit);
tprintf(", M (%u) O (%u)",icmp_134->m_o_res >> 7,
(icmp_134->m_o_res >> 6) & 0x1);
tprintf(", Router Lifetime (%us)",ntohs(icmp_134->router_lifetime));
tprintf(", Reachable Time (%ums)",ntohl(icmp_134->reachable_time));
tprintf(", Retrans Timer (%ums)",ntohl(icmp_134->retrans_timer));
return dissect_neighb_disc_ops(pkt);
}
static int8_t dissect_icmpv6_type135(struct pkt_buff *pkt)
{
char address[INET6_ADDRSTRLEN];
struct icmpv6_type_135 *icmp_135;
icmp_135 = (struct icmpv6_type_135 *)
pkt_pull(pkt,sizeof(*icmp_135));
if (icmp_135 == NULL)
return 0;
tprintf(", Reserved (0x%x)",ntohl(icmp_135->res));
tprintf(", Target Address: %s",
inet_ntop(AF_INET6, &icmp_135->ipv6_addr,
address, sizeof(address)));
return dissect_neighb_disc_ops(pkt);
}
static int8_t dissect_icmpv6_type136(struct pkt_buff *pkt)
{
char address[INET6_ADDRSTRLEN];
uint32_t r_s_o_res;
struct icmpv6_type_136 *icmp_136;
icmp_136 = (struct icmpv6_type_136 *)
pkt_pull(pkt,sizeof(*icmp_136));
if (icmp_136 == NULL)
return 0;
r_s_o_res = ntohl(icmp_136->r_s_o_res);
tprintf(", R (%u) S (%u) O (%u) Reserved (0x%x)", r_s_o_res >> 31,
(r_s_o_res >> 30) & 0x1, (r_s_o_res >> 29) & 0x1,
r_s_o_res & 0x1FFFFFFF);
tprintf(", Target Address: %s",
inet_ntop(AF_INET6, &icmp_136->ipv6_addr,
address, sizeof(address)));
return dissect_neighb_disc_ops(pkt);
}
static int8_t dissect_icmpv6_type137(struct pkt_buff *pkt)
{
char address[INET6_ADDRSTRLEN];
struct icmpv6_type_137 *icmp_137;
icmp_137 = (struct icmpv6_type_137 *)
pkt_pull(pkt,sizeof(*icmp_137));
if (icmp_137 == NULL)
return 0;
tprintf(", Reserved (0x%x)",icmp_137->res);
tprintf(", Target Address: %s",
inet_ntop(AF_INET6, &icmp_137->ipv6_targ_addr,
address, sizeof(address)));
tprintf(", Dest Address: %s",
inet_ntop(AF_INET6, &icmp_137->ipv6_dest_addr,
address, sizeof(address)));
return dissect_neighb_disc_ops(pkt);
}
static void dissect_icmpv6_rr_body(struct pkt_buff *pkt)
{
/*
* Upgrade Dissector for Message Body
* from http://tools.ietf.org/html/rfc2894#section-3.2
*/
if(pkt_len(pkt))
tprintf(" Message Body recognized");
}
static inline char *icmpv6_type_138_codes(uint8_t code) {
switch (code) {
case 1: return "Router Renumbering Command";
case 2: return "Router Renumbering Result";
case 255: return "Sequence Number Reset";
}
return NULL;
};
static int8_t dissect_icmpv6_type138(struct pkt_buff *pkt)
{
struct icmpv6_type_138 *icmp_138;
icmp_138 = (struct icmpv6_type_138 *)
pkt_pull(pkt,sizeof(*icmp_138));
if (icmp_138 == NULL)
return 0;
tprintf(", Sequence Nr. (%u)",ntohl(icmp_138->seq_nr));
tprintf(", Segment Nr. (%u)",icmp_138->seg_nr);
tprintf(", T (%u) R (%u) A (%u) S (%u) P (%u) Res \
(0x%x) ",icmp_138->flags >> 7, (icmp_138->flags >> 6) & 1,
(icmp_138->flags >> 5) & 1, (icmp_138->flags >> 4) & 1,
(icmp_138->flags >> 3) & 1, icmp_138->flags & 7);
tprintf(", Max Delay (%ums)", ntohs(icmp_138->maxdelay));
tprintf(", Res (0x%x)", ntohl(icmp_138->res));
dissect_icmpv6_rr_body(pkt);
return 1;
}
static void dissect_icmpv6_node_inf_data(struct pkt_buff *pkt)
{
/*
* Upgrade Dissector for Data field
* http://tools.ietf.org/html/rfc4620#section-4
*/
if(pkt_len(pkt))
tprintf(" Data recognized");
}
static const char *icmpv6_node_inf_qtypes[] = {
"NOOP",
"unused",
"Node Name",
"Node Addresses",
"IPv4 Addresses ",
};
static const char *icmpv6_type_139_codes[] = {
"Data contains IPv6 Address",
"Data contains Name or nothing",
"Data contains IPv4 Address",
};
static int8_t dissect_icmpv6_type139(struct pkt_buff *pkt)
{
const char *qtype_name = "Unknown";
uint16_t qtype_nr;
struct icmpv6_type_139_140 *icmp_139;
icmp_139 = (struct icmpv6_type_139_140 *)
pkt_pull(pkt,sizeof(*icmp_139));
if (icmp_139 == NULL)
return 0;
qtype_nr = ntohs(icmp_139->qtype);
if (icmpv6_code_range_valid(qtype_nr, icmpv6_node_inf_qtypes))
qtype_name = icmpv6_node_inf_qtypes[qtype_nr];
tprintf(", Qtype %s (%u)", qtype_name, qtype_nr);
tprintf(", Flags (0x%x)", ntohs(icmp_139->flags));
tprintf(", Nonce (0x%"PRIx64")", ntohll(icmp_139->nonce));
dissect_icmpv6_node_inf_data(pkt);
return 1;
}
static char *icmpv6_type_140_codes[] = {
"Successful reply",
"Responder refuses answer",
"Qtype is unknown to the Responder",
};
static inline int8_t dissect_icmpv6_type140(struct pkt_buff *pkt)
{
return dissect_icmpv6_type139(pkt);
}
static inline int8_t dissect_icmpv6_type141(struct pkt_buff *pkt)
{
return dissect_icmpv6_type133(pkt);
}
static inline int8_t dissect_icmpv6_type142(struct pkt_buff *pkt)
{
return dissect_icmpv6_type133(pkt);
}
static int8_t dissect_icmpv6_type143(struct pkt_buff *pkt)
{
uint16_t nr_rec;
struct icmpv6_type_143 *icmp_143;
icmp_143 = (struct icmpv6_type_143 *)
pkt_pull(pkt,sizeof(*icmp_143));
if (icmp_143 == NULL)
return 0;
nr_rec = ntohs(icmp_143->nr_rec);
tprintf(", Res (0x%x)",ntohs(icmp_143->res));
tprintf(", Nr. Mcast Addr Records (%u)",nr_rec);
return dissect_icmpv6_mcast_rec(pkt, nr_rec);
}
static int8_t dissect_icmpv6_type144(struct pkt_buff *pkt)
{
struct icmpv6_type_144_146 *icmp_144;
icmp_144 = (struct icmpv6_type_144_146 *)
pkt_pull(pkt,sizeof(*icmp_144));
if (icmp_144 == NULL)
return 0;
tprintf(", ID (%u)",ntohs(icmp_144->id));
tprintf(", Res (0x%x)",ntohs(icmp_144->res));
return 1;
}
static int8_t dissect_icmpv6_type145(struct pkt_buff *pkt)
{
struct icmpv6_type_145 *icmp_145;
icmp_145 = (struct icmpv6_type_145 *)
pkt_pull(pkt,sizeof(*icmp_145));
if (icmp_145 == NULL)
return 0;
tprintf(", ID (%u)",ntohs(icmp_145->id));
tprintf(", Res (0x%x)",ntohs(icmp_145->res));
return print_ipv6_addr_list(pkt, pkt_len(pkt) /
sizeof(struct in6_addr));
}
static inline int8_t dissect_icmpv6_type146(struct pkt_buff *pkt)
{
return dissect_icmpv6_type144(pkt);
}
static int8_t dissect_icmpv6_type147(struct pkt_buff *pkt)
{
uint16_t m_o_res;
struct icmpv6_type_147 *icmp_147;
icmp_147 = (struct icmpv6_type_147 *)
pkt_pull(pkt,sizeof(*icmp_147));
if (icmp_147 == NULL)
return 0;
m_o_res = ntohs(icmp_147->m_o_res);
tprintf(", ID (%u)",ntohs(icmp_147->id));
tprintf(", M (%u) O (%u) Res (0x%x)",m_o_res >> 15,
(m_o_res >> 14) & 1, m_o_res & 0x3FFF);
return dissect_neighb_disc_ops(pkt);
}
static int8_t dissect_icmpv6_type148(struct pkt_buff *pkt)
{
struct icmpv6_type_148 *icmp_148;
icmp_148 = (struct icmpv6_type_148 *)
pkt_pull(pkt,sizeof(*icmp_148));
if (icmp_148 == NULL)
return 0;
tprintf(", ID (%u)",ntohs(icmp_148->id));
tprintf(", Component (%u)",ntohs(icmp_148->comp));
return dissect_neighb_disc_ops(pkt);
}
static int8_t dissect_icmpv6_type149(struct pkt_buff *pkt)
{
struct icmpv6_type_149 *icmp_149;
icmp_149 = (struct icmpv6_type_149 *)
pkt_pull(pkt,sizeof(*icmp_149));
if (icmp_149 == NULL)
return 0;
tprintf(", ID (%u)",ntohs(icmp_149->id));
tprintf(", All Components (%u)",ntohs(icmp_149->all_comp));
tprintf(", Component (%u)",ntohs(icmp_149->comp));
tprintf(", Res (0x%x)",ntohs(icmp_149->res));
return dissect_neighb_disc_ops(pkt);
}
static int8_t dissect_icmpv6_type150(struct pkt_buff *pkt)
{
struct icmpv6_type_150 *icmp_150;
icmp_150 = (struct icmpv6_type_150 *)
pkt_pull(pkt,sizeof(*icmp_150));
if (icmp_150 == NULL)
return 0;
tprintf(", Subtype (%u)",icmp_150->subtype);
tprintf(", Res (0x%x)",icmp_150->res);
tprintf(", Options in Payload");
return 1;
}
static int8_t dissect_icmpv6_type151(struct pkt_buff *pkt)
{
struct icmpv6_type_151 *icmp_151;
icmp_151 = (struct icmpv6_type_151 *)
pkt_pull(pkt,sizeof(*icmp_151));
if (icmp_151 == NULL)
return 0;
tprintf(", Query Interval (%us)",ntohs(icmp_151->query_intv));
tprintf(", Robustness Variable (%u)",ntohs(icmp_151->rob_var));
return 1;
}
static int8_t dissect_icmpv6_type152(struct pkt_buff *pkt)
{
struct icmpv6_type_152 *icmp_152;
icmp_152 = (struct icmpv6_type_152 *)
pkt_pull(pkt,sizeof(*icmp_152));
if (icmp_152 == NULL)
return 0;
return 1;
}
static int8_t dissect_icmpv6_type153(struct pkt_buff *pkt)
{
struct icmpv6_type_153 *icmp_153;
icmp_153 = (struct icmpv6_type_153 *)
pkt_pull(pkt,sizeof(*icmp_153));
if (icmp_153 == NULL)
return 0;
return 1;
}
static int8_t dissect_icmpv6_type154(struct pkt_buff *pkt)
{
struct icmpv6_type_154 *icmp_154;
icmp_154 = (struct icmpv6_type_154 *)
pkt_pull(pkt,sizeof(*icmp_154));
if (icmp_154 == NULL)
return 0;
tprintf(", Subtype (%u)",icmp_154->subtype);
tprintf(", Res (0x%x)",icmp_154->res);
tprintf(", ID (%u)",ntohs(icmp_154->id));
return dissect_neighb_disc_ops(pkt);
}
static inline char *icmpv6_type_155_codes(uint8_t code) {
switch (code) {
case 0x00: return "DODAG Information Solicitation";
case 0x01: return "DODAG Information Object";
case 0x02: return "Destination Advertisement Object";
case 0x03: return "Destination Advertisement Object Acknowledgment";
case 0x80: return "Secure DODAG Information Solicitation";
case 0x81: return "Secure DODAG Information Object";
case 0x82: return "Secure Destination Advertisement Object";
case 0x83: return "Secure Destination Advertisement Object Acknowledgment";
case 0x8A: return "Consistency Check";
}
return NULL;
};
static void icmpv6_process(struct icmpv6_general_hdr *icmp, const char **type,
const char **code, int8_t (**optional)(struct pkt_buff *pkt))
{
*type = "Unknown Type";
*code = "Unknown Code";
switch (icmp->h_type) {
case 1:
*type = "Destination Unreachable";
if (icmpv6_code_range_valid(icmp->h_code, icmpv6_type_1_codes))
*code = icmpv6_type_1_codes[icmp->h_code];
*optional = dissect_icmpv6_type1;
return;
case 2:
*type = "Packet Too Big";
*optional = dissect_icmpv6_type2;
return;
case 3:
*type = "Time Exceeded";
if (icmpv6_code_range_valid(icmp->h_code, icmpv6_type_3_codes))
*code = icmpv6_type_3_codes[icmp->h_code];
*optional = dissect_icmpv6_type3;
return;
case 4:
*type = "Parameter Problem";
if (icmpv6_code_range_valid(icmp->h_code, icmpv6_type_4_codes))
*code = icmpv6_type_4_codes[icmp->h_code];
*optional = dissect_icmpv6_type4;
return;
case 100:
*type = "Private experimation";
return;
case 101:
*type = "Private experimation";
return;
case 127:
*type = "Reserved for expansion of ICMPv6 error messages";
return;
case 128:
*type = "Echo Request";
*optional = dissect_icmpv6_type128;
return;
case 129:
*type = "Echo Reply";
*optional = dissect_icmpv6_type129;
return;
case 130:
*type = "Multicast Listener Query";
*optional = dissect_icmpv6_type130;
return;
case 131:
*type = "Multicast Listener Report";
*optional = dissect_icmpv6_type131;
return;
case 132:
*type = "Multicast Listener Done";
*optional = dissect_icmpv6_type132;
return;
case 133:
*type = "Router Solicitation";
*optional = dissect_icmpv6_type133;
return;
case 134:
*type = "Router Advertisement";
*optional = dissect_icmpv6_type134;
return;
case 135:
*type = "Neighbor Solicitation";
*optional = dissect_icmpv6_type135;
return;
case 136:
*type = "Neighbor Advertisement";
*optional = dissect_icmpv6_type136;
return;
case 137:
*type = "Redirect Message";
*optional = dissect_icmpv6_type137;
return;
case 138:
*type = "Router Renumbering";
if(icmpv6_type_138_codes(icmp->h_code))
*code = icmpv6_type_138_codes(icmp->h_code);
*optional = dissect_icmpv6_type138;
return;
case 139:
*type = "ICMP Node Information Query";
if (icmpv6_code_range_valid(icmp->h_code,
icmpv6_type_139_codes))
*code = icmpv6_type_139_codes[icmp->h_code];
*optional = dissect_icmpv6_type139;
return;
case 140:
*type = "ICMP Node Information Response";
if (icmpv6_code_range_valid(icmp->h_code,
icmpv6_type_140_codes))
*code = icmpv6_type_140_codes[icmp->h_code];
*optional = dissect_icmpv6_type140;
return;
case 141:
*type = "Inverse Neighbor Discovery Solicitation Message";
*optional = dissect_icmpv6_type141;
return;
case 142:
*type = "Inverse Neighbor Discovery Advertisement Message";
*optional = dissect_icmpv6_type142;
return;
case 143:
*type = "Multicast Listener Report v2";
*optional = dissect_icmpv6_type143;
return;
case 144:
*type = "Home Agent Address Discovery Request Message";
*optional = dissect_icmpv6_type144;
return;
case 145:
*type = "Home Agent Address Discovery Reply Message";
*optional = dissect_icmpv6_type145;
return;
case 146:
*type = "Mobile Prefix Solicitation";
*optional = dissect_icmpv6_type146;
return;
case 147:
*type = "Mobile Prefix Advertisement";
*optional = dissect_icmpv6_type147;
return;
case 148:
*type = "Certification Path Solicitation";
*optional = dissect_icmpv6_type148;
return;
case 149:
*type = "Certification Path Advertisement";
*optional = dissect_icmpv6_type149;
return;
case 150:
*type = "ICMP messages utilized by experimental mobility "
"protocols such as Seamoby";
*optional = dissect_icmpv6_type150;
return;
case 151:
*type = "Multicast Router Advertisement";
*code = "Ad. Interval";
*optional = dissect_icmpv6_type151;
return;
case 152:
*type = "Multicast Router Solicitation";
*code = "Reserved";
*optional = dissect_icmpv6_type152;
return;
case 153:
*type = "Multicast Router Termination";
*code = "Reserved";
*optional = dissect_icmpv6_type153;
return;
case 154:
*type = "FMIPv6 Messages";
*optional = dissect_icmpv6_type154;
return;
case 155:
*type = "RPL Control Message";
if(icmpv6_type_155_codes(icmp->h_code))
*code = icmpv6_type_155_codes(icmp->h_code);
return;
case 200:
*type = "Private experimation";
return;
case 201:
*type = "Private experimation";
return;
case 255:
*type = "Reserved for expansion of ICMPv6 error messages";
return;
}
}
static void icmpv6(struct pkt_buff *pkt)
{
const char *type = NULL, *code = NULL;
int8_t (*optional)(struct pkt_buff *pkt) = NULL;
struct icmpv6_general_hdr *icmp =
(struct icmpv6_general_hdr *) pkt_pull(pkt, sizeof(*icmp));
if (icmp == NULL)
return;
icmpv6_process(icmp, &type, &code, &optional);
tprintf(" [ ICMPv6 ");
tprintf("%s (%u), ", type, icmp->h_type);
tprintf("%s (%u), ", code, icmp->h_code);
tprintf("Chks (0x%x)", ntohs(icmp->h_chksum));
if (optional)
if (!((*optional) (pkt)))
tprintf("\n%s%s%s", colorize_start_full(black, red),
"Failed to dissect Message", colorize_end());
tprintf(" ]\n");
}
static void icmpv6_less(struct pkt_buff *pkt)
{
struct icmpv6_general_hdr *icmp =
(struct icmpv6_general_hdr *) pkt_pull(pkt, sizeof(*icmp));
if (icmp == NULL)
return;
tprintf(" ICMPv6 Type (%u) Code (%u)", icmp->h_type, icmp->h_code);
}
struct protocol icmpv6_ops = {
.key = 0x3A,
.print_full = icmpv6,
.print_less = icmpv6_less,
};
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