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2026-07-30 11:19:44 +05:30
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components/ip_net2-6.9/ipike/src/ipike_payload_nat.h
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/*
******************************************************************************
* HEADER FILE
*
* Document no: @(#) $Name: VXWORKS_ITER40_2019102207 $ $RCSfile: ipike_payload_nat.h,v $ $Revision: 1.6.16.2 $
* $Source: /home/interpeak/CVSRoot/ipike/src/ipike_payload_nat.h,v $
* $Author: svc-cmnet $ $Date: 2013-03-13 07:45:26 $
* $State: Exp $ $Locker: $
*
* INTERPEAK_COPYRIGHT_STRING
* Design and implementation by Magnus Alstrom <info@interpeak.se>
******************************************************************************
*/
#ifndef IPIKE_PAYLOAD_NAT_H
#define IPIKE_PAYLOAD_NAT_H
#include "ipike.h"
#include "ipike_sadb.h"
/*
****************************************************************************
* 1 DESCRIPTION
****************************************************************************
*/
/* NAT Discovery payload
* NAT Original Address payload
*
* Payloads for discovering and handling of NAT traversal (RFC 3947)
*/
/*
****************************************************************************
* 2 CONFIGURATION
****************************************************************************
*/
/*
****************************************************************************
* 3 INCLUDE FILES
****************************************************************************
*/
#include "ipike_config.h"
#include "ipike_payload.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
****************************************************************************
* 4 DEFINES
****************************************************************************
*/
#define IPIKE_NAT_DISCOVERY_HEADER_LENGTH sizeof(Ipike_nat_discovery_payload)
#define IPIKE_NAT_DISCOVERY_MIN_LEN MD5_DIGEST_LENGTH
#define IPIKE_NAT_DISCOVERY_MAX_LEN SHA512_DIGEST_LENGTH
#define IPIKE_NAT_ORG_ADDR_HEADER_LENGTH sizeof(Ipike_nat_org_addr_payload)
#define IPIKE_NAT_ORG_ADDR_MIN_LEN 4
#define IPIKE_NAT_ORG_ADDR_MAX_LEN 16
/*
****************************************************************************
* 5 TYPES
****************************************************************************
*/
/*
NAT Discovery Payload Format
1 2 3
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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! Next Payload ! RESERVED ! Payload Length !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! !
~ HASH of the address and port ~
! !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
typedef struct Ipike_payload_nat_discovery_struct
{
/* The generic ISAKMP payload header, the length includes the length
of all transforms associated with the proposal */
Ipike_payload_header header;
/* NAT discovery follows. Contains the NAT discovery data.
*/
}
Ipike_nat_discovery_payload;
/*
NAT Orginal Address Format
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
+---------------+---------------+---------------+---------------+
| Next Payload | RESERVED | Payload length |
+---------------+---------------+---------------+---------------+
| ID Type | RESERVED | RESERVED |
+---------------+---------------+---------------+---------------+
| IPv4 (4 octets) or IPv6 address (16 octets) |
+---------------+---------------+---------------+---------------+
*/
typedef struct Ipike_payload_nat_org_addr_struct
{
/* The generic ISAKMP payload header, the length includes the length
of all transforms associated with the proposal */
Ipike_payload_header header;
Ip_u8 type;
Ip_u8 reserved1;
Ip_u16 reserved2;
/* NAT original address follows. Contains the NAT origial address data.
*/
}
Ipike_nat_org_addr_payload;
/*
****************************************************************************
* 6 FUNCTIONS
****************************************************************************
*/
/*
*===========================================================================
* ipike_nat_discovery_new
*===========================================================================
* Description: Creates a new nat_discovery payload.
* Parameters: nat_discovery_data - nat discovery data.
* nat_discovery_len - the length of the nat discovery.
* Returns: A new nat discovery payload or IP_NULL if out of memory.
*
*
*/
IP_GLOBAL Ipike_nat_discovery_payload*
ipike_nat_discovery_new(
const Ip_u8* nat_discovery_data,
Ip_u16 nat_discovery_len);
/*
*===========================================================================
* ipike_nat_discovery_create
*===========================================================================
* Description: Creates a new nat discovery payload from the information
* created in the exchange.
* Parameters: nat_discovery - will point to a new nat discovery payload if
* the call was successful.
* Returns: IPIKE_SUCCESS
* IPIKE_OUT_OF_MEMORY
*
*/
IP_GLOBAL Ipike_error
ipike_nat_discovery_create(
union Ip_sockaddr_union* address,
Ip_u8* i_cookie,
Ip_u8* r_cookie,
Ip_u16 hash_alg,
Ipike_nat_discovery_payload** nat_discovery);
/*
*===========================================================================
* ipike_nat_discovery_check_payload
*===========================================================================
* Description: Verifies that the nat discovery payload is sane.
* Parameters: nat_discovery - a pointer to a nat discovery payload.
* Returns: IPIKE_SUCCESS
*
*
*/
IP_GLOBAL Ipike_error
ipike_nat_discovery_check_payload(Ipike_nat_discovery_payload* nat_discovery);
/*
*===========================================================================
* ipike_nat_discovery_generate_pair
*===========================================================================
* Description: Generate nat discovery data for source and destination.
* Parameters: ike_sa - SA to initialize NAT discovery data.
* hash_alg - Algorithm uses for generating data.
* Returns: IPIKE_SUCCESS
* IPIKE_OUT_OF_MEMORY
*/
IP_GLOBAL Ipike_error
ipike_nat_discovery_generate_pair(Ipike_sadb_entry* ike_sa, Ip_u16 hash_alg);
/*
*===========================================================================
* ipike_nat_discovery_start
*===========================================================================
* Description: Extracts the nat discovery data from the payload.
* Parameters: ike_sa - SA to initialize for NAT discovery.
* Returns: IPIKE_SUCCESS
* IPIKE_OUT_OF_MEMORY
*
*/
IP_GLOBAL Ipike_error
ipike_nat_discovery_start(Ipike_sadb_entry* ike_sa, Ip_u16 hash_alg);
/*
*===========================================================================
* ipike_nat_discovery_end
*===========================================================================
* Description: Extracts the nat discovery data from the payload.
* Parameters: ie - the exchange.
* Returns: IPIKE_SUCCESS
* IPIKE_OUT_OF_MEMORY
*
*/
IP_GLOBAL Ipike_error
ipike_nat_discovery_end(Ipike_isakmp_exchange* ie);
/*
*===========================================================================
* ipike_nat_discovery_process
*===========================================================================
* Description: Extracts the nat discovery data from the payload.
* Parameters: ike_sa - SA to discover NAT for.
* hash_alg - the used hash algorithm.
* payload - a nat discovery payload.
* Returns: IPIKE_SUCCESS
* IPIKE_OUT_OF_MEMORY
*
*/
IP_GLOBAL Ipike_error
ipike_nat_discovery_process(
Ipike_sadb_entry* ike_sa,
Ipike_nat_discovery_payload* payload);
/*
*===========================================================================
* ipike_nat_discovery_extract
*===========================================================================
* Description: Extracts the nat discovery data from the payload.
* Parameters: payload - a nat discovery payload.
* nat_discovery - the nat discovery data will be added here if
* the call was successful.
* Returns: IPIKE_SUCCESS
* IPIKE_OUT_OF_MEMORY
*
*/
IP_GLOBAL Ipike_error
ipike_nat_discovery_extract(
Ipike_nat_discovery_payload* payload,
Ipike_value* nat_discovery);
/*
*===========================================================================
* ipike_nat_discovery_generate
*===========================================================================
* Description: Generates the digest of the cookies, ip address and port.
* nat_discovery - pointer to where the nat_discovery data
* should be stored.
* Returns: IPIKE_SUCCESS
* IPIKE_OUT_OF_MEMORY
*
*/
IP_GLOBAL Ipike_error
ipike_nat_discovery_generate(
union Ip_sockaddr_union* address,
Ip_u8* i_cookie,
Ip_u8* r_cookie,
Ip_u16 hash_alg,
Ipike_value* nat_discovery);
/*
*===========================================================================
* ipike_nat_discovery_print_payload
*===========================================================================
* Description: Prints the content of the nat discovery payload to the system
* log.
* Parameters: nat_discovery - a pointer to a nat discovery payload.
* Returns:
*/
IP_GLOBAL void
ipike_nat_discovery_print_payload(Ipike_nat_discovery_payload* nat_discovery);
/*
*===========================================================================
* ipike_nat_original_address_create
*===========================================================================
* Description: Creates a new nat original address payload from the
* information created in the exchange.
* Parameters: nat_org_addr - will point to a new nat original address
* payload if the call was successful.
* Returns: IPIKE_SUCCESS
* IPIKE_OUT_OF_MEMORY
*
*/
IP_GLOBAL Ipike_error
ipike_nat_original_address_create(
union Ip_sockaddr_union* address,
Ipike_nat_org_addr_payload** nat_org_addr);
/*
*===========================================================================
* ipike_nat_original_address_check_payload
*===========================================================================
* Description: Verifies that the nat original address payload is sane.
* Parameters: nat_org_addr - a pointer to a nat original address payload.
* Returns: IPIKE_SUCCESS
*
*
*/
IP_GLOBAL Ipike_error
ipike_nat_original_address_check_payload(
Ipike_nat_org_addr_payload* nat_org_addr);
/*
*===========================================================================
* ipike_nat_original_address_extract
*===========================================================================
* Description: Extracts the nat original address data from the payload.
* Parameters: payload - a nat original address payload.
* nat_org_addr - the nat original address will be added
* here if the call was successful.
* Returns: IPIKE_SUCCESS
* IPIKE_OUT_OF_MEMORY
*
*/
IP_GLOBAL Ipike_error
ipike_nat_original_address_extract(
Ipike_nat_org_addr_payload* payload,
union Ip_sockaddr_union* nat_org_addr);
/*
*===========================================================================
* ipike_nat_original_address_print_payload
*===========================================================================
* Description: Prints the content of the nat original address payload to the
* system log.
* Parameters: nat_org_addr - a pointer to a nat original address payload.
* Returns:
*
*
*/
IP_GLOBAL void
ipike_nat_original_address_print_payload(
Ipike_nat_org_addr_payload* nat_org_addr);
#ifdef __cplusplus
}
#endif
#endif
/*
****************************************************************************
* END OF FILE
****************************************************************************
*/