natipsecptalg.h

vxworks下ppp的实现源码

/* natIPSecPTAlg.h */

/* Copyright 2001-2003 Wind River Systems, Inc. */

/* @format.tab-size 4, @format.use-tabs true, @format.new-line lf */

/* WindNet NAT "installable" IPSec Pass-Thru Application Level Gateway (ALG) */

/*
modification history
--------------------
01a,23apr03,zhu  Updated.
050101	mdg	 Created.
*/

#ifndef __INCnatIPSecPTAlgh
#define __INCnatIPSecPTAlgh

/* data structures */
typedef unsigned long long ULONG64;

typedef	struct	ISAKMP_TRANSLATION_HEADER
    {
	struct	ISAKMP_TRANSLATION *			sptr_forward_link;
	struct	ISAKMP_TRANSLATION *			sptr_backward_link;
    } ISAKMP_TRANSLATION_HEADER;

typedef struct ISAKMP_TRANSLATION
    {
    ISAKMP_TRANSLATION_HEADER               link;
	IP_ADDRESS								local_address;
	IP_ADDRESS								remote_address;
    ULONG64                                 initiator_cookie;
    ULONG64                                 responder_cookie;
    ULONG                                   isakmp_translation_entry_timer;
    } ISAKMP_TRANSLATION_ENTRY;

typedef	struct	ESP_TRANSLATION_HEADER
    {
	struct	ESP_TRANSLATION *			sptr_forward_link;
	struct	ESP_TRANSLATION *			sptr_backward_link;
    } ESP_TRANSLATION_HEADER;

typedef struct ESP_TRANSLATION
    {
    ESP_TRANSLATION_HEADER                  link;
	IP_ADDRESS								local_address;
	IP_ADDRESS								remote_address;
    ULONG                                   outbound_spi;
    ULONG                                   inbound_spi;
    ULONG                                   esp_translation_entry_timer;
    BOOL                                    blocking;
    BOOL                                    squelched;
    ULONG                                   outbound_retry_count;
    } ESP_TRANSLATION_ENTRY;

typedef _struct ISAKMP_PACKET
{
	IP_HEADER			ip_header;
	UDP_HEADER			header;
	ULONG64				initiator_cookie;
	ULONG64				responder_cookie;
	BYTE				data[VARIABLE_NUMBER_OF_BYTES];
} _pack ISAKMP_PACKET;

typedef _struct ESP_PACKET
{
	IP_HEADER			ip_header;
	ULONG			    spi;
	BYTE				data[VARIABLE_NUMBER_OF_BYTES];
} _pack ESP_PACKET;

/* 64bit word host to network byte order or vice versa conversion macros */

#if (_BYTE_ORDER ==_BIG_ENDIAN)

#define ntoh64(x)    (x)
#define hton64(x)    (x)

#else

#define ntoh64(x)  ( ((ULONG64)(ntohl((UINT32)(x))) << 32) | \
                        (ntohl((UINT32)((x) >> 32))) )
#define hton64(x)  ( ((ULONG64)(htonl((UINT32)(x))) << 32) | \
                        (htonl((UINT32)((x) >> 32))) )
#endif

/* function declarations */
STATUS natIPSecPTInit(u_short);		/* IPSec Pass-thru ALG agent initialization function */
STATUS natIPSecPTEnd();
void natEspXlatShow();
void natIsakmpXlatShow();
void natIpsecXlatShow();

#endif	/* __INCnatIPSecPTAlgh */