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|
/* packet-nat-pmp.c
* Routines for NAT Port Mapping Protocol packet disassembly.
* RFC 6886
*
* Copyright 2009, Stig Bjorlykke <stig@bjorlykke.org>
*
* Routines for Port Control Protocol packet disassembly
* (backwards compatible with NAT Port Mapping protocol)
* RFC6887: Port Control Protocol (PCP) https://tools.ietf.org/html/rfc6887
*
* Copyright 2012, Michael Mann
*
* Description Option for the Port Control Protocol
* RFC 7220
* Discovering NAT64 IPv6 Prefixes Using the Port Control Protocol (PCP)
* RFC 7225
*
* Alexis La Goutte
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/expert.h>
void proto_register_nat_pmp(void);
void proto_reg_handoff_nat_pmp(void);
static dissector_handle_t nat_pmp_handle;
static dissector_handle_t pcp_handle;
#define PCP_PORT_RANGE "5350-5351"
/* NAT Port opcodes */
#define EXTERNAL_ADDRESS_REQUEST 0
#define MAP_UDP_REQUEST 1
#define MAP_TCP_REQUEST 2
#define EXTERNAL_ADDRESS_RESPONSE 128
#define MAP_UDP_RESPONSE 129
#define MAP_TCP_RESPONSE 130
/* Port Control opcodes */
#define ANNOUNCE_REQUEST 0
#define MAP_REQUEST 1
#define PEER_REQUEST 2
#define ANNOUNCE_RESPONSE 128
#define MAP_RESPONSE 129
#define PEER_RESPONSE 130
/* Port Control options */
#define OPT_THIRD_PARTY 1
#define OPT_PREFER_FAILURE 2
#define OPT_FILTER 3
#define OPT_DESCRIPTION 128
#define OPT_PREFIX64 129
#define OPT_PORT_SET 130
static int proto_nat_pmp;
static int proto_pcp;
static int hf_version;
static int hf_opcode;
static int hf_result_code;
static int hf_sssoe;
static int hf_external_ip;
static int hf_reserved;
static int hf_internal_port;
static int hf_external_port_requested;
static int hf_external_port_mapped;
static int hf_rpmlis;
static int hf_pmlis;
static int ett_nat_pmp;
/* Port Control Protocol */
static int hf_pcp_version;
static int hf_request;
static int hf_response;
static int hf_pcp_r;
static int hf_pcp_opcode;
static int hf_pcp_result_code;
static int hf_reserved1;
static int hf_reserved2;
static int hf_reserved12;
static int hf_req_lifetime;
static int hf_rsp_lifetime;
static int hf_client_ip;
static int hf_epoch_time;
static int hf_map_nonce;
static int hf_map_protocol;
static int hf_map_reserved1;
static int hf_map_internal_port;
static int hf_map_req_sug_external_port;
static int hf_map_req_sug_ext_ip;
static int hf_map_rsp_assigned_external_port;
static int hf_map_rsp_assigned_ext_ip;
static int hf_peer_nonce;
static int hf_peer_protocol;
static int hf_peer_reserved;
static int hf_peer_internal_port;
static int hf_peer_req_sug_external_port;
static int hf_peer_req_sug_ext_ip;
static int hf_peer_remote_peer_port;
static int hf_peer_remote_peer_ip;
static int hf_peer_rsp_assigned_external_port;
static int hf_peer_rsp_assigned_ext_ip;
static int hf_options;
static int hf_option;
static int hf_option_code;
static int hf_option_reserved;
static int hf_option_length;
static int hf_option_third_party_internal_ip;
static int hf_option_filter_reserved;
static int hf_option_filter_prefix_length;
static int hf_option_filter_remote_peer_port;
static int hf_option_filter_remote_peer_ip;
static int hf_option_description;
static int hf_option_p64_length;
static int hf_option_p64_prefix64;
static int hf_option_p64_suffix;
static int hf_option_p64_ipv4_prefix_count;
static int hf_option_p64_ipv4_prefix_length;
static int hf_option_p64_ipv4_address;
static int hf_option_portset_size;
static int hf_option_portset_first_suggested_port;
static int hf_option_portset_first_assigned_port;
static int hf_option_portset_reserved;
static int hf_option_portset_parity;
static int hf_option_padding;
static int ett_pcp;
static int ett_opcode;
static int ett_option;
static int ett_suboption;
static expert_field ei_natpmp_opcode_unknown;
static expert_field ei_pcp_opcode_unknown;
static expert_field ei_pcp_option_unknown;
static const value_string opcode_vals[] = {
{ EXTERNAL_ADDRESS_REQUEST, "External Address Request" },
{ EXTERNAL_ADDRESS_RESPONSE, "External Address Response" },
{ MAP_UDP_REQUEST, "Map UDP Request" },
{ MAP_UDP_RESPONSE, "Map UDP Response" },
{ MAP_TCP_REQUEST, "Map TCP Request" },
{ MAP_TCP_RESPONSE, "Map TCP Response" },
{ 0, NULL }
};
static const value_string result_vals[] = {
{ 0, "Success" },
{ 1, "Unsupported Version" },
{ 2, "Not Authorized/Refused" },
{ 3, "Network Failure" },
{ 4, "Out of resources" },
{ 5, "Unsupported opcode" },
{ 0, NULL }
};
static const value_string pcp_opcode_vals[] = {
{ 0, "Announce" },
{ 1, "Map" },
{ 2, "Peer" },
{ 0, NULL }
};
static const value_string pcp_ropcode_vals[] = {
{ ANNOUNCE_REQUEST, "Announce Request" },
{ MAP_REQUEST, "Map Request" },
{ PEER_REQUEST, "Peer Request" },
{ ANNOUNCE_RESPONSE, "Announce Response" },
{ MAP_RESPONSE, "Map Response" },
{ PEER_RESPONSE, "Peer Response" },
{ 0, NULL }
};
static const value_string pcp_result_vals[] = {
{ 0, "Success" },
{ 1, "Unsupported Version" },
{ 2, "Not Authorized/Refused" },
{ 3, "Malformed Request" },
{ 4, "Unsupported opcode" },
{ 5, "Unsupported option" },
{ 6, "Malformed option" },
{ 7, "Network failure" },
{ 8, "No resources" },
{ 9, "Unsupported protocol" },
{ 10, "User exceeds quota" },
{ 11, "Cannot provide external port" },
{ 12, "Address mismatch" },
{ 13, "Excessive remote peers" },
{ 0, NULL }
};
static const value_string pcp_option_vals[] = {
{ 0, "Reserved" },
{ OPT_THIRD_PARTY, "Third Party" },
{ OPT_PREFER_FAILURE, "Prefer Failure" },
{ OPT_FILTER, "Filter" },
{ OPT_DESCRIPTION, "Description" },
{ OPT_PREFIX64, "Prefix64" },
{ OPT_PORT_SET, "Port Set" },
{ 0, NULL }
};
static const value_string pcp_protocol_vals[] = {
{0, "All Protocols"},
{6, "TCP"},
{17, "UDP"},
{ 0, NULL }
};
static int
dissect_nat_pmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
proto_tree *nat_pmp_tree;
proto_item *ti, *op_ti;
int start_offset, offset = 0;
uint8_t opcode;
col_set_str (pinfo->cinfo, COL_PROTOCOL, "NAT-PMP");
col_clear (pinfo->cinfo, COL_INFO);
start_offset = offset;
ti = proto_tree_add_item(tree, proto_nat_pmp, tvb, offset, -1, ENC_NA);
nat_pmp_tree = proto_item_add_subtree(ti, ett_nat_pmp);
proto_tree_add_item(nat_pmp_tree, hf_version, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
opcode = tvb_get_uint8 (tvb, offset);
proto_item_append_text (ti, ", %s", val_to_str(opcode, opcode_vals, "Unknown opcode: %d"));
op_ti = proto_tree_add_item(nat_pmp_tree, hf_opcode, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
col_add_str (pinfo->cinfo, COL_INFO, val_to_str(opcode, opcode_vals, "Unknown opcode: %d"));
switch(opcode) {
case EXTERNAL_ADDRESS_REQUEST:
/* No more data */
break;
case EXTERNAL_ADDRESS_RESPONSE:
proto_tree_add_item(nat_pmp_tree, hf_result_code, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nat_pmp_tree, hf_sssoe, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(nat_pmp_tree, hf_external_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
case MAP_UDP_REQUEST:
case MAP_TCP_REQUEST:
proto_tree_add_item(nat_pmp_tree, hf_reserved, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nat_pmp_tree, hf_internal_port, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nat_pmp_tree, hf_external_port_requested, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nat_pmp_tree, hf_rpmlis, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
case MAP_UDP_RESPONSE:
case MAP_TCP_RESPONSE:
proto_tree_add_item(nat_pmp_tree, hf_result_code, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nat_pmp_tree, hf_sssoe, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(nat_pmp_tree, hf_internal_port, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nat_pmp_tree, hf_external_port_mapped, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nat_pmp_tree, hf_pmlis, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
default:
/* Unknown OP */
expert_add_info_format(pinfo, op_ti, &ei_natpmp_opcode_unknown, "Unknown opcode: %d", opcode);
break;
}
return (offset-start_offset);
}
static int
dissect_portcontrol_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, uint8_t version)
{
proto_tree *pcp_tree, *opcode_tree = NULL, *option_tree, *option_sub_tree;
proto_item *ti, *opcode_ti, *option_ti, *suboption_ti;
int offset = 0, start_offset, start_opcode_offset, start_option_offset;
uint8_t ropcode, option;
uint16_t option_length;
int mod_option_length = 0;
int option_padding_length = 0;
bool is_response;
const char* op_str;
if(version == 1)
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PCP v1");
else
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PCP v2");
col_clear(pinfo->cinfo, COL_INFO);
start_offset = offset;
ti = proto_tree_add_item(tree, proto_pcp, tvb, offset, -1, ENC_NA);
pcp_tree = proto_item_add_subtree(ti, ett_pcp);
proto_tree_add_item(pcp_tree, hf_pcp_version, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
ropcode = tvb_get_uint8(tvb, offset);
is_response = ropcode & 0x80;
op_str = val_to_str(ropcode, pcp_ropcode_vals, "Unknown opcode: %d");
proto_item_append_text(ti, ", %s", op_str);
proto_tree_add_item(pcp_tree, hf_pcp_r, tvb, offset, 1, ENC_BIG_ENDIAN);
opcode_ti = proto_tree_add_item(pcp_tree, hf_pcp_opcode, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
col_add_str(pinfo->cinfo, COL_INFO, op_str);
if(!is_response)
{
ti = proto_tree_add_boolean(pcp_tree, hf_request, tvb, offset-1, 1, is_response == false);
proto_item_set_hidden(ti);
proto_tree_add_item(pcp_tree, hf_reserved2, tvb, offset, 2, ENC_BIG_ENDIAN);
offset+=2;
proto_tree_add_item(pcp_tree, hf_req_lifetime, tvb, offset, 4, ENC_BIG_ENDIAN);
offset+=4;
proto_tree_add_item(pcp_tree, hf_client_ip, tvb, offset, 16, ENC_NA);
offset+=16;
}
else
{
ti = proto_tree_add_boolean(pcp_tree, hf_response, tvb, offset-1, 1, is_response == true);
proto_item_set_hidden(ti);
proto_tree_add_item(pcp_tree, hf_reserved1, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(pcp_tree, hf_pcp_result_code, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(pcp_tree, hf_rsp_lifetime, tvb, offset, 4, ENC_BIG_ENDIAN);
offset+=4;
proto_tree_add_item(pcp_tree, hf_epoch_time, tvb, offset, 4, ENC_BIG_ENDIAN);
offset+=4;
proto_tree_add_item(pcp_tree, hf_reserved12, tvb, offset, 12, ENC_NA);
offset+=12;
}
start_opcode_offset = offset;
if(try_val_to_str(ropcode, pcp_ropcode_vals) != NULL)
{
opcode_tree = proto_tree_add_subtree(pcp_tree, tvb, offset, 0, ett_opcode, &opcode_ti, op_str);
}
uint32_t protocol = 0;
uint32_t internal_port = 0;
uint32_t external_port = 0;
uint32_t port_set_size = 0;
switch(ropcode) {
case ANNOUNCE_REQUEST:
case ANNOUNCE_RESPONSE:
/* No data */
break;
case MAP_REQUEST:
case MAP_RESPONSE:
{
if(version > 1) {
proto_tree_add_item(opcode_tree, hf_map_nonce, tvb, offset, 12, ENC_NA);
offset+=12;
}
proto_tree_add_item_ret_uint(opcode_tree, hf_map_protocol, tvb, offset, 1, ENC_BIG_ENDIAN, &protocol);
offset++;
proto_tree_add_item(opcode_tree, hf_map_reserved1, tvb, offset, 3, ENC_BIG_ENDIAN);
offset += 3;
proto_tree_add_item_ret_uint(opcode_tree, hf_map_internal_port, tvb, offset, 2, ENC_BIG_ENDIAN, &internal_port);
offset += 2;
if (ropcode == MAP_REQUEST) {
proto_tree_add_item_ret_uint(opcode_tree, hf_map_req_sug_external_port, tvb, offset, 2, ENC_BIG_ENDIAN, &external_port);
offset += 2;
proto_tree_add_item(opcode_tree, hf_map_req_sug_ext_ip, tvb, offset, 16, ENC_NA);
offset += 16;
} else {
proto_tree_add_item_ret_uint(opcode_tree, hf_map_rsp_assigned_external_port, tvb, offset, 2, ENC_BIG_ENDIAN, &external_port);
offset += 2;
proto_tree_add_item(opcode_tree, hf_map_rsp_assigned_ext_ip, tvb, offset, 16, ENC_NA);
offset += 16;
}
break;
}
case PEER_REQUEST:
case PEER_RESPONSE:
if(version > 1)
{
proto_tree_add_item(opcode_tree, hf_peer_nonce, tvb, offset, 12, ENC_NA);
offset+=12;
}
proto_tree_add_item(opcode_tree, hf_peer_protocol, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(opcode_tree, hf_peer_reserved, tvb, offset, 3, ENC_NA);
offset+=3;
proto_tree_add_item(opcode_tree, hf_peer_internal_port, tvb, offset, 2, ENC_BIG_ENDIAN);
offset+=2;
if(ropcode == PEER_REQUEST)
{
proto_tree_add_item(opcode_tree, hf_peer_req_sug_external_port, tvb, offset, 2, ENC_BIG_ENDIAN);
offset+=2;
proto_tree_add_item(opcode_tree, hf_peer_req_sug_ext_ip, tvb, offset, 16, ENC_NA);
offset+=16;
}
else
{
proto_tree_add_item(opcode_tree, hf_peer_rsp_assigned_external_port, tvb, offset, 2, ENC_BIG_ENDIAN);
offset+=2;
proto_tree_add_item(opcode_tree, hf_peer_rsp_assigned_ext_ip, tvb, offset, 16, ENC_NA);
offset+=16;
}
proto_tree_add_item(opcode_tree, hf_peer_remote_peer_port, tvb, offset, 2, ENC_BIG_ENDIAN);
offset+=2;
proto_tree_add_item(opcode_tree, hf_peer_reserved, tvb, offset, 2, ENC_NA);
offset+=2;
proto_tree_add_item(opcode_tree, hf_peer_remote_peer_ip, tvb, offset, 16, ENC_NA);
offset+=16;
break;
default:
/* Unknown OP */
expert_add_info_format(pinfo, opcode_ti, &ei_pcp_opcode_unknown, "Unknown opcode: %d", ropcode);
break;
}
/* Now see if there are any options for the supported opcodes */
if((tvb_reported_length_remaining(tvb, offset) > 0) &&
(try_val_to_str(ropcode, pcp_ropcode_vals) != NULL))
{
start_option_offset = offset;
option_ti = proto_tree_add_item(opcode_tree, hf_options, tvb, offset, 0, ENC_NA);
option_tree = proto_item_add_subtree(option_ti, ett_option);
while(tvb_reported_length_remaining(tvb, offset) > 0)
{
suboption_ti = proto_tree_add_item(option_tree, hf_option, tvb, offset, 1, ENC_NA);
option_sub_tree = proto_item_add_subtree(suboption_ti, ett_suboption);
proto_tree_add_item(option_sub_tree, hf_option_code, tvb, offset, 1, ENC_BIG_ENDIAN);
option = tvb_get_uint8(tvb, offset);
proto_item_append_text(suboption_ti, ": %s", val_to_str(option, pcp_option_vals, "Unknown option: %d"));
offset++;
proto_tree_add_item(option_sub_tree, hf_option_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(option_sub_tree, hf_option_length, tvb, offset, 2, ENC_BIG_ENDIAN);
option_length = tvb_get_ntohs(tvb, offset);
offset+=2;
mod_option_length = option_length % 4;
if( mod_option_length != 0 )
{
option_padding_length = 4 - mod_option_length;
}
proto_item_set_len(suboption_ti, option_length+4+option_padding_length);
if(option_length > 0)
{
switch(option) {
case OPT_THIRD_PARTY:
proto_tree_add_item(option_sub_tree, hf_option_third_party_internal_ip, tvb, offset, 16, ENC_NA);
break;
case OPT_PREFER_FAILURE:
/* No data */
break;
case OPT_FILTER:
proto_tree_add_item(option_sub_tree, hf_option_filter_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(option_sub_tree, hf_option_filter_prefix_length, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(option_sub_tree, hf_option_filter_remote_peer_port, tvb, offset+2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(option_sub_tree, hf_option_filter_remote_peer_ip, tvb, offset+4, 16, ENC_NA);
break;
case OPT_DESCRIPTION:
proto_tree_add_item(option_sub_tree, hf_option_description, tvb, offset, option_length, ENC_UTF_8);
break;
case OPT_PREFIX64:
{
uint32_t p64_length;
int optoffset = 0;
if(option_length-optoffset < 2)
{
/*TODO: report an error here*/
break;
}
proto_tree_add_item_ret_uint(option_sub_tree, hf_option_p64_length, tvb, offset+optoffset, 2, ENC_BIG_ENDIAN, &p64_length);
optoffset += 2;
if(option_length-optoffset < 12)
{
/*TODO: report an error here*/
break;
}
if(p64_length <= 12)
{
/*TODO: Fix display of Prefix64 and Suffix*/
proto_tree_add_item(option_sub_tree, hf_option_p64_prefix64, tvb, offset+optoffset, p64_length, ENC_NA);
optoffset += p64_length;
proto_tree_add_item(option_sub_tree, hf_option_p64_suffix, tvb, offset+optoffset, 12-p64_length, ENC_NA);
optoffset += (12-p64_length);
} else {
/*TODO: report an error here*/
optoffset += 12;
}
if(option_length-optoffset > 0)
{
uint32_t ipv4_prefix_count;
if(option_length-optoffset < 2)
{
/*TODO: report an error here*/
break;
}
proto_tree_add_item_ret_uint(option_sub_tree, hf_option_p64_ipv4_prefix_count, tvb, offset+optoffset, 2, ENC_BIG_ENDIAN, &ipv4_prefix_count);
optoffset += 2;
while(ipv4_prefix_count)
{
if(option_length-optoffset < 2)
{
/*TODO: report an error here*/
break;
}
proto_tree_add_item(option_sub_tree, hf_option_p64_ipv4_prefix_length, tvb, offset+optoffset, 2, ENC_BIG_ENDIAN);
optoffset += 2;
if(option_length-optoffset < 4)
{
/*TODO: report an error here*/
break;
}
proto_tree_add_item(option_sub_tree, hf_option_p64_ipv4_address, tvb, offset+optoffset, 4, ENC_BIG_ENDIAN);
optoffset += 4;
ipv4_prefix_count--;
}
}
}
break;
case OPT_PORT_SET:
proto_tree_add_item_ret_uint(option_sub_tree, hf_option_portset_size, tvb, offset, 2, ENC_BIG_ENDIAN, &port_set_size);
if (!is_response) {
proto_tree_add_item_ret_uint(option_sub_tree, hf_option_portset_first_suggested_port, tvb, offset + 2, 2, ENC_BIG_ENDIAN, &external_port);
} else {
proto_tree_add_item_ret_uint(option_sub_tree, hf_option_portset_first_assigned_port, tvb, offset + 2, 2, ENC_BIG_ENDIAN, &external_port);
}
proto_tree_add_item(option_sub_tree, hf_option_portset_reserved, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(option_sub_tree, hf_option_portset_parity, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
break;
default:
/* Unknown option */
expert_add_info_format(pinfo, option_ti, &ei_pcp_option_unknown, "Unknown option: %d", option);
break;
}
}
offset+=option_length;
if( option_padding_length > 0 )
{
proto_tree_add_item(option_sub_tree, hf_option_padding, tvb, offset, option_padding_length, ENC_NA);
offset+=option_padding_length;
}
}
proto_item_set_len(option_ti, offset-start_option_offset);
}
proto_item_set_len(opcode_ti, offset-start_opcode_offset);
bool is_map_opcode = (ropcode == MAP_REQUEST || ropcode == MAP_RESPONSE);
if (is_map_opcode && port_set_size != 0) {
col_add_fstr(
pinfo->cinfo,
COL_INFO,
"%s: %d-%d -> %d-%d [%s]",
op_str,
internal_port,
internal_port + port_set_size,
external_port,
external_port + port_set_size,
val_to_str(protocol, pcp_protocol_vals, "Unknown Protocol %d")
);
} else if (is_map_opcode) {
col_add_fstr(
pinfo->cinfo,
COL_INFO,
"%s: %d -> %d [%s]",
op_str,
internal_port,
external_port,
val_to_str(protocol, pcp_protocol_vals, "Unknown Protocol %d")
);
}
return (offset-start_offset);
}
static int
dissect_portcontrol(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
uint8_t version = tvb_get_uint8(tvb, 0);
switch(version)
{
case 0:
/* NAT-PMP protocol */
return dissect_nat_pmp(tvb, pinfo, tree, data);
case 1:
case 2:
return dissect_portcontrol_pdu(tvb, pinfo, tree, version);
}
return 0;
}
void proto_register_nat_pmp(void)
{
static hf_register_info hf[] = {
{ &hf_version,
{ "Version", "nat-pmp.version", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_opcode,
{ "Opcode", "nat-pmp.opcode", FT_UINT8, BASE_DEC,
VALS(opcode_vals), 0x0, NULL, HFILL } },
{ &hf_result_code,
{ "Result Code", "nat-pmp.result_code", FT_UINT16, BASE_DEC,
VALS(result_vals), 0x0, NULL, HFILL } },
{ &hf_sssoe,
{ "Seconds Since Start of Epoch", "nat-pmp.sssoe", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_external_ip,
{ "External IP Address", "nat-pmp.external_ip", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_reserved,
{ "Reserved", "nat-pmp.reserved", FT_UINT16, BASE_DEC,
NULL, 0x0, "Reserved (must be zero)", HFILL } },
{ &hf_internal_port,
{ "Internal Port", "nat-pmp.internal_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_external_port_requested,
{ "Requested External Port", "nat-pmp.external_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_external_port_mapped,
{ "Mapped External Port", "nat-pmp.external_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_rpmlis,
{ "Requested Port Mapping Lifetime", "nat-pmp.pml", FT_UINT32, BASE_DEC,
NULL, 0x0, "Requested Port Mapping Lifetime in Seconds", HFILL } },
{ &hf_pmlis,
{ "Port Mapping Lifetime", "nat-pmp.pml", FT_UINT32, BASE_DEC,
NULL, 0x0, "Port Mapping Lifetime in Seconds", HFILL } },
};
static hf_register_info pcp_hf[] = {
{ &hf_pcp_version,
{ "Version", "portcontrol.version", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_request,
{ "Request", "portcontrol.request", FT_BOOLEAN, 8,
NULL, 0x01, NULL, HFILL } },
{ &hf_response,
{ "Response", "portcontrol.response", FT_BOOLEAN, 8,
NULL, 0x01, NULL, HFILL } },
{ &hf_pcp_r,
{ "R", "portcontrol.r", FT_BOOLEAN, 8,
TFS(&tfs_response_request), 0x80, "Indicates Request (0) or Response (1)", HFILL } },
{ &hf_pcp_opcode,
{ "Opcode", "portcontrol.opcode", FT_UINT8, BASE_DEC,
VALS(pcp_opcode_vals), 0x7F, NULL, HFILL } },
{ &hf_pcp_result_code,
{ "Result Code", "portcontrol.result_code", FT_UINT16, BASE_DEC,
VALS(pcp_result_vals), 0x0, NULL, HFILL } },
{ &hf_reserved1,
{ "Reserved", "portcontrol.reserved", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_reserved2,
{ "Reserved", "portcontrol.reserved", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_reserved12,
{ "Reserved", "portcontrol.rsp_reserved", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_req_lifetime,
{ "Requested Lifetime", "portcontrol.lifetime_req", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_rsp_lifetime,
{ "Lifetime", "portcontrol.lifetime_rsp", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_client_ip,
{ "Client IP Address", "portcontrol.client_ip", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_epoch_time,
{ "Epoch Time", "portcontrol.epoch_time", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_map_nonce,
{ "Mapping Nonce", "portcontrol.map.nonce", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_map_protocol,
{ "Protocol", "portcontrol.map.protocol", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_map_reserved1,
{ "Reserved", "portcontrol.map.reserved", FT_UINT24, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_map_internal_port,
{ "Internal Port", "portcontrol.map.internal_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_map_req_sug_external_port,
{ "Suggested External Port", "portcontrol.map.req_sug_external_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_map_req_sug_ext_ip,
{ "Suggested External IP Address", "portcontrol.map.req_sug_external_ip", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_map_rsp_assigned_external_port,
{ "Assigned External Port", "portcontrol.map.rsp_assigned_external_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_map_rsp_assigned_ext_ip,
{ "Assigned External IP Address", "portcontrol.map.rsp_assigned_ext_ip", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_peer_nonce,
{ "Mapping Nonce", "portcontrol.peer.nonce", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_peer_protocol,
{ "Protocol", "portcontrol.peer.protocol", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_peer_reserved,
{ "Reserved", "portcontrol.peer.reserved", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_peer_internal_port,
{ "Internal Port", "portcontrol.peer.internal_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_peer_req_sug_external_port,
{ "Suggested External Port", "portcontrol.peer.req_sug_external_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_peer_req_sug_ext_ip,
{ "Suggested External IP Address", "portcontrol.peer.req_sug_external_ip", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_peer_remote_peer_port,
{ "Remote Peer Port", "portcontrol.peer.remote_peer_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_peer_remote_peer_ip,
{ "Remote Peer IP Address", "portcontrol.peer.remote_peer_ip", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_peer_rsp_assigned_external_port,
{ "Assigned External Port", "portcontrol.peer.rsp_assigned_external_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_peer_rsp_assigned_ext_ip,
{ "Assigned External IP Address", "portcontrol.peer.rsp_assigned_ext_ip", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_options,
{ "Options", "portcontrol.options", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_option,
{ "Option", "portcontrol.option", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_code,
{ "Option", "portcontrol.option.code", FT_UINT8, BASE_DEC,
VALS(pcp_option_vals), 0x0, NULL, HFILL } },
{ &hf_option_reserved,
{ "Reserved", "portcontrol.option.reserved", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_length,
{ "Option Length", "portcontrol.option.length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_third_party_internal_ip,
{ "Internal IP Address", "portcontrol.option.third_party.internal_ip", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_filter_reserved,
{ "Reserved", "portcontrol.option.filter.reserved", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_filter_prefix_length,
{ "Prefix Length", "portcontrol.option.filter.prefix_length", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_filter_remote_peer_port,
{ "Remote Peer Port", "portcontrol.option.filter.remote_peer_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_filter_remote_peer_ip,
{ "Remote Peer IP Address", "portcontrol.option.filter.remote_peer_ip", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_description,
{ "Description", "portcontrol.option.description", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_p64_length,
{ "Length", "portcontrol.option.p64.length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_p64_prefix64,
{ "Prefix64", "portcontrol.option.p64.prefix64", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_p64_suffix,
{ "Suffix", "portcontrol.option.p64.suffix", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_p64_ipv4_prefix_count,
{ "IPv4 Prefix Count", "portcontrol.option.p64.ipv4_prefix_count", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_p64_ipv4_prefix_length,
{ "IPv4 Prefix Length", "portcontrol.option.p64.ipv4_prefix_length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_p64_ipv4_address,
{ "IPv4 Address", "portcontrol.option.p64.ipv4_address", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_portset_size,
{ "Port Set Size", "portcontrol.option.portset.size", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_portset_first_suggested_port,
{ "Suggested First Port", "portcontrol.option.portset.req_sug_first_external_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_portset_first_assigned_port,
{ "Assigned First Port", "portcontrol.option.portset.rsp_assigned_first_external_port", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL } },
{ &hf_option_portset_reserved,
{ "Reserved", "portcontrol.option.portset.reserved", FT_UINT8, BASE_HEX,
NULL, 0xFE, NULL, HFILL } },
{ &hf_option_portset_parity,
{ "Parity Requested", "portcontrol.option.portset.parity", FT_BOOLEAN, 8,
NULL, 0x01, NULL, HFILL } },
{ &hf_option_padding,
{ "Padding", "portcontrol.option.padding", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL } },
};
static int *pcp_ett[] = {
&ett_pcp,
&ett_opcode,
&ett_option,
&ett_suboption
};
static int *ett[] = {
&ett_nat_pmp,
};
static ei_register_info natpmp_ei[] = {
{ &ei_natpmp_opcode_unknown, { "nat-pmp.opcode.unknown", PI_RESPONSE_CODE, PI_WARN, "Unknown opcode", EXPFILL }},
};
static ei_register_info pcp_ei[] = {
{ &ei_pcp_opcode_unknown, { "portcontrol.opcode.unknown", PI_RESPONSE_CODE, PI_WARN, "Unknown opcode", EXPFILL }},
{ &ei_pcp_option_unknown, { "portcontrol.option.unknown", PI_RESPONSE_CODE, PI_WARN, "Unknown option", EXPFILL }},
};
expert_module_t* expert_nat_pmp;
expert_module_t* expert_pcp;
proto_nat_pmp = proto_register_protocol("NAT Port Mapping Protocol", "NAT-PMP", "nat-pmp");
proto_register_field_array(proto_nat_pmp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_nat_pmp = expert_register_protocol(proto_nat_pmp);
expert_register_field_array(expert_nat_pmp, natpmp_ei, array_length(natpmp_ei));
nat_pmp_handle = register_dissector("nat-pmp", dissect_nat_pmp, proto_nat_pmp);
proto_pcp = proto_register_protocol("Port Control Protocol", "Port Control", "portcontrol");
proto_register_field_array(proto_pcp, pcp_hf, array_length(pcp_hf));
proto_register_subtree_array(pcp_ett, array_length(pcp_ett));
expert_pcp = expert_register_protocol(proto_pcp);
expert_register_field_array(expert_pcp, pcp_ei, array_length(pcp_ei));
pcp_handle = register_dissector("portcontrol", dissect_portcontrol, proto_pcp);
}
void proto_reg_handoff_nat_pmp(void)
{
dissector_add_uint_range_with_preference("udp.port", PCP_PORT_RANGE, pcp_handle);
/* Port Control Protocol (packet-portcontrol.c) shares the same UDP ports as
NAT-PMP, but it backwards compatible. However, still let NAT-PMP
use Decode As
*/
dissector_add_for_decode_as_with_preference("udp.port", nat_pmp_handle);
}
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
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