natpptpptalg.h

vxworks下ppp的实现源码

/* natPPTPPTAlg.h */

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

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

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

/*
modification history
--------------------
01a,23apr03,zhu  Updated.
050801	mdg	 Created.
*/

#ifndef __INCnatPPTPPTAlgh
#define __INCnatPPTPPTAlgh

/* data structures */
typedef	struct	PPTP_TRANSLATION_HEADER
    {
	struct	PPTP_TRANSLATION *			sptr_forward_link;
	struct	PPTP_TRANSLATION *			sptr_backward_link;
    } PPTP_TRANSLATION_HEADER;

typedef struct PPTP_TRANSLATION
    {
    PPTP_TRANSLATION_HEADER             link;
	IP_ADDRESS						    local_address;
	IP_ADDRESS							remote_address;
    BOOL                                nated_client;
    USHORT                              call_id;
    USHORT                              spoofed_call_id;
    USHORT                              peers_call_id;
    ULONG                               pptp_translation_entry_timer;
    } PPTP_TRANSLATION_ENTRY;

typedef _struct PPTP_GRE_V2_MESSAGE_HEADER_FLAGS
    {
#if (_BYTE_ORDER == _LITTLE_ENDIAN)
	unsigned char   		version:3;
	unsigned char   		flags:4;
	unsigned char   		acknowledgment_number_present:1;
	unsigned char			recursion_control:3;
	unsigned char			strict_source_route_present:1;
	unsigned char			sequence_number_present:1;
	unsigned char			key_present:1;
	unsigned char			routing_present:1;
    unsigned char			checksum_present:1;
#else
    unsigned char			checksum_present:1;
	unsigned char			routing_present:1;
	unsigned char			key_present:1;
	unsigned char			sequence_number_present:1;
	unsigned char			strict_source_route_present:1;
	unsigned char			recursion_control:3;
	unsigned char   		acknowledgment_number_present:1;
	unsigned char   		flags:4;
	unsigned char   		version:3;
#endif
    } _pack PPTP_GRE_V2_MESSAGE_HEADER_FLAGS;

typedef _struct PPTP_GRE_PACKET
    {
	IP_HEADER			                ip_header;
	PPTP_GRE_V2_MESSAGE_HEADER_FLAGS 	bit_flags;
	USHORT								protocol_type;
	USHORT								payload_length;
	USHORT								call_id;
	ULONG								sequence_number;
	ULONG								acknowledgment_number;
	BYTE				                data[VARIABLE_NUMBER_OF_BYTES];
    } _pack PPTP_GRE_PACKET;

typedef _struct PPTP_MESSAGE_HEADER
    {
	USHORT					length;
	USHORT              	type;
	ULONG					magic_cookie;
    } _pack PPTP_MESSAGE_HEADER;

typedef _struct PPTP_CONTROL_MESSAGE_HEADER
    {
	USHORT              	message_type;
	USHORT 				 	reserved_0;
    } _pack PPTP_CONTROL_MESSAGE_HEADER;

typedef _struct PPTP_GENERIC_CONTROL_MESSAGE
    {
	BYTE	                data[VARIABLE_NUMBER_OF_BYTES];
    } _pack PPTP_GENERIC_CONTROL_MESSAGE;

typedef _struct PPTP_START_CONTROL_CONNECTION_REQUEST
    {
	USHORT			protocol_version;
	USHORT  		reserved_1;
	ULONG       	framing_capabilities;
	ULONG           bearer_capabilities;
	USHORT			maximum_channels;
	USHORT			firmware_revision;
	BYTE			host_name[64];
	BYTE			vendor_string[64];
    } _pack PPTP_START_CONTROL_CONNECTION_REQUEST;


typedef _struct PPTP_START_CONTROL_CONNECTION_REPLY
    {
	USHORT			protocol_version;
	BYTE           	result_code;
	BYTE		    error_code;
	ULONG           framing_capabilities;
	ULONG           bearer_capabilities;
    USHORT			maximum_channels;
	USHORT			firmware_revision;
	BYTE			host_name[64];
	BYTE			vendor_string[64];
    } _pack PPTP_START_CONTROL_CONNECTION_REPLY;


typedef _struct PPTP_STOP_CONTROL_CONNECTION_REQUEST
    {
	BYTE			reason;
	BYTE	  		reserved_1;
	USHORT	  		reserved_2;
    } _pack PPTP_STOP_CONTROL_CONNECTION_REQUEST;


typedef _struct PPTP_STOP_CONTROL_CONNECTION_REPLY
    {
	BYTE			reason;
	BYTE	  		error_code;
	USHORT	  		reserved_1;
    } PPTP_STOP_CONTROL_CONNECTION_REPLY;


typedef _struct PPTP_ECHO_REQUEST
    {
	ULONG		   	identifier;
    } _pack PPTP_ECHO_REQUEST;


typedef _struct PPTP_ECHO_REPLY
    {
	ULONG		    identifier;
	BYTE			result_code;
	BYTE	  		error_code;
	USHORT	  		reserved_1;
    } _pack PPTP_ECHO_REPLY;


typedef _struct PPTP_OUTGOING_CALL_REQUEST
    {
	USHORT			call_id;
	USHORT			call_serial_number;
	ULONG			minimum_bits_per_sec;
	ULONG			maximum_bits_per_sec;
	ULONG			bearer_type;
	ULONG			framing_type;
	USHORT			packet_receive_window_size;
	USHORT			packet_processing_delay;
	BYTE    		phone_number[64];
	BYTE	    	sub_address[64];
    } _pack PPTP_OUTGOING_CALL_REQUEST;


typedef _struct PPTP_OUTGOING_CALL_REPLY
    {
	USHORT			call_id;
	USHORT			peers_call_id;
	BYTE		    result_code;
	BYTE			error_code;
	USHORT			cause_code;
	ULONG 			connect_speed;
	USHORT			packet_receive_window_size;
	USHORT			packet_processing_delay;
	ULONG 			physical_channel_id;
    } _pack PPTP_OUTGOING_CALL_REPLY;


typedef _struct	PPTP_INCOMING_CALL_REQUEST
    {
	USHORT			call_id;
	USHORT			call_serial_number;
	ULONG			call_bearer_type;
	ULONG 			physical_channel_id;
	USHORT			dialed_number_length;
	USHORT			dialing_number_length;
	BYTE  			dialed_number[64];
	BYTE  		    dialing_number[64];
	BYTE			sub_address[64];
    } _pack PPTP_INCOMING_CALL_REQUEST;


typedef _struct	PPTP_INCOMING_CALL_REPLY
    {
	USHORT			call_id;
	USHORT			peers_call_id;
	BYTE		    result_code;
	BYTE			error_code;
	USHORT			packet_receive_window_size;
	USHORT			packet_transmit_delay;
	USHORT			reserved_1;
    } _pack PPTP_INCOMING_CALL_REPLY;


typedef _struct PPTP_INCOMING_CALL_CONNECTED
    {
	USHORT			peers_call_id;
	USHORT			reserved_1;
	ULONG 			connect_speed;
	USHORT  		packet_receive_window_size;
	USHORT	    	packet_transmit_delay;
	ULONG			framing_type;
    } _pack PPTP_INCOMING_CALL_CONNECTED;


typedef _struct PPTP_CALL_CLEAR_REQUEST
    {
    USHORT			call_id;
    USHORT          reserved_1;
    } _pack PPTP_CALL_CLEAR_REQUEST;


typedef _struct PPTP_CALL_DISCONNECT_NOTIFY
    {
    USHORT			call_id;
    BYTE    	    result_code;
    BYTE		    error_code;
    USHORT			cause_code;
    USHORT			reserved_1;
    BYTE       		call_statistics[128];
    } _pack PPTP_CALL_DISCONNECT_NOTIFY;


typedef _struct PPTP_WAN_ERROR_NOTIFY
    {
    USHORT			peers_call_id;
    USHORT			reserved_1;
    ULONG			crc_errors;
    ULONG			framing_errors;
    ULONG			hardware_overruns;
    ULONG			buffer_overruns;
    ULONG			timeout_errors;
    ULONG			alignment_errors;
    } _pack PPTP_WAN_ERROR_NOTIFY;


typedef _struct PPTP_SET_LINK_INFO
    {
	USHORT			peers_call_id;
	USHORT			reserved_1;
	ULONG			send_accm_value;
	ULONG			receive_accm_value;
    } _pack PPTP_SET_LINK_INFO;

typedef _union UNION_PPTP_CONTROL_MESSAGE
    {
	PPTP_GENERIC_CONTROL_MESSAGE			generic;
	PPTP_START_CONTROL_CONNECTION_REQUEST 	start_control_connection_request;
	PPTP_START_CONTROL_CONNECTION_REPLY		start_control_connection_reply;
	PPTP_STOP_CONTROL_CONNECTION_REQUEST	stop_control_connection_request;
	PPTP_STOP_CONTROL_CONNECTION_REPLY		stop_control_connection_reply;
	PPTP_ECHO_REQUEST						echo_request;
	PPTP_ECHO_REPLY							echo_reply;
	PPTP_OUTGOING_CALL_REQUEST				outgoing_call_request;
	PPTP_OUTGOING_CALL_REPLY				outgoing_call_reply;
	PPTP_INCOMING_CALL_REQUEST				incoming_call_request;
	PPTP_INCOMING_CALL_REPLY				incoming_call_reply;
	PPTP_INCOMING_CALL_CONNECTED			incoming_call_connected;
	PPTP_CALL_CLEAR_REQUEST					call_clear_request;
	PPTP_CALL_DISCONNECT_NOTIFY 			call_disconnect_notify;
	PPTP_WAN_ERROR_NOTIFY					wan_error_notify;
	PPTP_SET_LINK_INFO 						set_link_info;
    } _pack UNION_PPTP_CONTROL_MESSAGE;


typedef _struct PPTP_CONTROL_PACKET
    {
	IP_HEADER 				 	  	ip_header;
	TCP_HEADER       		  		tcp_header;
	PPTP_MESSAGE_HEADER				pptp_header;
	PPTP_CONTROL_MESSAGE_HEADER		control_header;
	UNION_PPTP_CONTROL_MESSAGE		message;
    } _pack PPTP_CONTROL_PACKET;

/* PptpControlMessageType values */
#define PPTP_START_SESSION_REQUEST	 1
#define PPTP_START_SESSION_REPLY	 2
#define PPTP_STOP_SESSION_REQUEST	 3
#define PPTP_STOP_SESSION_REPLY		 4
#define PPTP_ECHO_REQUEST		     5
#define PPTP_ECHO_REPLY			     6
#define PPTP_OUT_CALL_REQUEST		 7
#define PPTP_OUT_CALL_REPLY		     8
#define PPTP_IN_CALL_REQUEST		 9
#define PPTP_IN_CALL_REPLY		     10
#define PPTP_INCOMING_CALL_CONNECTED 11
#define PPTP_CALL_CLEAR_REQUEST		 12
#define PPTP_CALL_DISCONNECT_NOTIFY	 13
#define PPTP_WAN_ERROR_NOTIFY		 14
#define PPTP_SET_LINK_INFO		     15

/* function declarations */
STATUS natPPTPPTInit(void);		/* PPTP Pass-thru ALG agent initialization function */
STATUS natPPTPPTPTEnd(void);
void natPPTPXlatShow(void);

#endif	/* __INCnatPPTPPTAlgh */