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/*****************************************************************************
** Copyright (c) 1998-1999 Microsoft Corporation** PROTOCOL.H - PPTP and GRE Protocol data types and constants** Author: Stan Adermann (stana)** Created: 7/23/1998******************************************************************************/
#ifndef PROTOCOL_H
#define PROTOCOL_H
/* IP ----------------------------------------------------------------------*/
typedef struct { UCHAR HeaderLength : 4; UCHAR Version : 4; UCHAR TypeOfService; USHORT TotalLength; USHORT Identification; USHORT FlagsAndFragmentOffset; UCHAR TimeToLive; UCHAR Protocol; USHORT Checksum; ULONG SourceIp; ULONG DestinationIp;} IP4_HEADER, *PIP4_HEADER;
typedef struct { USHORT SourcePort; USHORT DestinationPort; USHORT Length; USHORT Checksum;} UDP_HEADER, *PUDP_HEADER;
/* GRE ---------------------------------------------------------------------*/
typedef struct { UCHAR RecursionControl : 3; UCHAR StrictSourceRoutePresent : 1; UCHAR SequenceNumberPresent : 1; UCHAR KeyPresent : 1; UCHAR RoutingPresent : 1; UCHAR ChecksumPresent : 1; UCHAR Version : 3; UCHAR Flags : 4; UCHAR AckSequenceNumberPresent : 1;
USHORT ProtocolType;
#define GRE_PROTOCOL_TYPE 0x880B
#define GRE_PROTOCOL_TYPE_NS 0x0B88
USHORT KeyLength; USHORT KeyCallId;} GRE_HEADER, *PGRE_HEADER;
#define GreSequence(g) (*(PULONG)(((PUCHAR)(g)) + sizeof(GRE_HEADER)))
#define GreAckSequence(g) \
((g)->SequenceNumberPresent ? \ (*(PULONG)(((PUCHAR)(g)) + sizeof(GRE_HEADER) + sizeof(ULONG))) : \ GreSequence(g))
/* PPTP --------------------------------------------------------------------*/
#define PPTP_TCP_PORT 1723
#define PPTP_IP_GRE_PROTOCOL 47
#define PPTP_PROTOCOL_VERSION_1_00 0x100
#define PPTP_PROTOCOL_SECURE_VERSION 0x200
#define PPTP_MAGIC_COOKIE 0x1A2B3C4D
#define INADDR_NONE 0xffffffff
#define MAX_HOSTNAME_LENGTH 64
#define MAX_VENDOR_LENGTH 64
#define MAX_PHONE_NUMBER_LENGTH 64
#define MAX_SUBADDRESS_LENGTH 64
#define MAX_CALL_STATS_LENGTH 128
#define PPTP_MAX_PACKET_SIZE 1532
#define PPTP_MAX_LOOKAHEAD PPTP_MAX_PACKET_SIZE
#define PPTP_MAX_TRANSMIT 32
#define PPTP_MAX_RECEIVE_SIZE (1614+20+12+8) // To allow for PPP padding, etc.
#define PPTP_RECV_WINDOW 64
#define PPTP_STATUS_SUCCESS 0
#define PPTP_STATUS_NOT_CONNECTED 1
#define PPTP_STATUS_BAD_FORMAT 2
#define PPTP_STATUS_BAD_VALUE 3
#define PPTP_STATUS_INSUFFICIENT_RESOURCES 4
#define PPTP_STATUS_BAD_CALL_ID 5
#define PPTP_STATUS_PAC_ERROR 6
typedef enum { PPTP_CONTROL_MESSAGE = 1} PPTP_PACKET_TYPE;
typedef enum { CONTROL_START_REQUEST = 1, CONTROL_START_REPLY, CONTROL_STOP_REQUEST, CONTROL_STOP_REPLY, CONTROL_ECHO_REQUEST, CONTROL_ECHO_REPLY,
CALL_OUT_REQUEST, CALL_OUT_REPLY, CALL_IN_REQUEST, CALL_IN_REPLY, CALL_IN_CONNECTED, CALL_CLEAR_REQUEST, CALL_DISCONNECT_NOTIFY,
WAN_ERROR_NOTIFY,
SET_LINK_INFO,
NUM_MESSAGE_TYPES} PPTP_MESSAGE_TYPE;
typedef struct { USHORT Length; USHORT PacketType; ULONG Cookie; USHORT MessageType; USHORT Reserved0;} PPTP_HEADER, *PPPTP_HEADER;
typedef struct { PPTP_HEADER; USHORT Version;
union { USHORT Reserved1; struct { UCHAR ResultCode;
#define RESULT_CONTROL_START_SUCCESS 1
#define RESULT_CONTROL_START_ERROR 2
#define RESULT_CONTROL_START_ALREADY_CONNECTED 3
#define RESULT_CONTROL_START_UNAUTHORIZED 4
#define RESULT_CONTROL_START_VERSION_NOT_SUPPORTED 5
UCHAR ErrorCode; }; };
ULONG FramingCapabilities;
#define FRAMING_ASYNC BIT(0)
#define FRAMING_SYNC BIT(1)
ULONG BearerCapabilities;
#define BEARER_ANALOG BIT(0)
#define BEARER_DIGITAL BIT(1)
USHORT MaxChannels; USHORT FirmwareRevision;
UCHAR HostName[MAX_HOSTNAME_LENGTH]; UCHAR Vendor[MAX_VENDOR_LENGTH];} PPTP_CONTROL_START_PACKET, *PPPTP_CONTROL_START_PACKET;
typedef struct { PPTP_HEADER;
union { struct { UCHAR Reason;
#define CONTROL_STOP_GENERAL 1
#define CONTROL_STOP_VERSION 2
#define CONTROL_STOP_LOCAL 3
UCHAR Reserved1; }; struct { UCHAR ResultCode;
#define RESULT_CONTROL_STOP_SUCCESS 1
#define RESULT_CONTROL_STOP_ERROR 2
UCHAR ErrorCode; }; };
USHORT Reserved2;} PPTP_CONTROL_STOP_PACKET, *PPPTP_CONTROL_STOP_PACKET;
typedef struct { PPTP_HEADER; ULONG Identifier;} PPTP_CONTROL_ECHO_REQUEST_PACKET, *PPPTP_CONTROL_ECHO_REQUEST_PACKET;
typedef struct { PPTP_HEADER; ULONG Identifier; UCHAR ResultCode;
#define RESULT_CONTROL_ECHO_SUCCESS 1
#define RESULT_CONTROL_ECHO_FAILURE 2
UCHAR ErrorCode; USHORT Reserved1;} PPTP_CONTROL_ECHO_REPLY_PACKET, *PPPTP_CONTROL_ECHO_REPLY_PACKET;
typedef struct { PPTP_HEADER; USHORT CallId; USHORT SerialNumber; ULONG MinimumBPS; ULONG MaximumBPS; ULONG BearerType; ULONG FramingType; USHORT RecvWindowSize; USHORT ProcessingDelay; USHORT PhoneNumberLength; USHORT Reserved1; UCHAR PhoneNumber[MAX_PHONE_NUMBER_LENGTH]; UCHAR Subaddress[MAX_SUBADDRESS_LENGTH];} PPTP_CALL_OUT_REQUEST_PACKET, *PPPTP_CALL_OUT_REQUEST_PACKET;
typedef struct { PPTP_HEADER; USHORT CallId; USHORT PeerCallId; UCHAR ResultCode;
#define RESULT_CALL_OUT_CONNECTED 1
#define RESULT_CALL_OUT_ERROR 2
#define RESULT_CALL_OUT_NO_CARRIER 3
#define RESULT_CALL_OUT_BUSY 4
#define RESULT_CALL_OUT_NO_DIAL_TONE 5
#define RESULT_CALL_OUT_TIMEOUT 6
#define RESULT_CALL_OUT_REFUSED 7
UCHAR ErrorCode; USHORT CauseCode; ULONG ConnectSpeed; USHORT RecvWindowSize; USHORT ProcessingDelay; ULONG PhysicalChannelId;} PPTP_CALL_OUT_REPLY_PACKET, *PPPTP_CALL_OUT_REPLY_PACKET;
typedef struct { PPTP_HEADER; USHORT CallId; USHORT SerialNumber; ULONG BearerType; ULONG PhysicalChannelId; USHORT DialedNumberLength; USHORT DialingNumberLength; UCHAR DialedNumber[MAX_PHONE_NUMBER_LENGTH]; UCHAR DialingNumber[MAX_PHONE_NUMBER_LENGTH]; UCHAR Subaddress[MAX_SUBADDRESS_LENGTH];} PPTP_CALL_IN_REQUEST_PACKET, *PPPTP_CALL_IN_REQUEST_PACKET;
typedef struct { PPTP_HEADER; USHORT CallId; USHORT PeerCallId; UCHAR ResultCode;
#define RESULT_CALL_IN_CONNECTED 1
#define RESULT_CALL_IN_ERROR 2
#define RESULT_CALL_IN_REFUSED 3
UCHAR ErrorCode; USHORT RecvWindowSize; USHORT ProcessingDelay; USHORT Reserved1;} PPTP_CALL_IN_REPLY_PACKET, *PPPTP_CALL_IN_REPLY_PACKET;
typedef struct { PPTP_HEADER; USHORT PeerCallId; USHORT Reserved1; ULONG ConnectSpeed; USHORT RecvWindowSize; USHORT ProcessingDelay; ULONG FramingType;} PPTP_CALL_IN_CONNECT_PACKET, *PPPTP_CALL_IN_CONNECT_PACKET;
typedef struct { PPTP_HEADER; USHORT CallId; USHORT Reserved1;} PPTP_CALL_CLEAR_REQUEST_PACKET, *PPPTP_CALL_CLEAR_REQUEST_PACKET;
typedef struct { PPTP_HEADER; USHORT CallId; UCHAR ResultCode;
#define RESULT_CALL_DISCONNECT_LOST_CARRIER 1
#define RESULT_CALL_DISCONNECT_ERROR 2
#define RESULT_CALL_DISCONNECT_ADMIN 3
#define RESULT_CALL_DISCONNECT_REQUEST 4
UCHAR ErrorCode; USHORT CauseCode; USHORT Reserved1; UCHAR CallStatistics[MAX_CALL_STATS_LENGTH];} PPTP_CALL_DISCONNECT_NOTIFY_PACKET, *PPPTP_CALL_DISCONNECT_NOTIFY_PACKET;
typedef struct { PPTP_HEADER; USHORT PeerCallId; USHORT Reserved1; ULONG CrcErrors; ULONG FramingErrors; ULONG HardwareOverruns; ULONG BufferOverruns; ULONG TimeoutErrors; ULONG AlignmentErrors;} PPTP_WAN_ERROR_NOTIFY_PACKET, *PPPTP_WAN_ERROR_NOTIFY_PACKET;
typedef struct { PPTP_HEADER; USHORT PeerCallId; USHORT Reserved1; ULONG SendAccm; ULONG RecvAccm;} PPTP_SET_LINK_INFO_PACKET, *PPPTP_SET_LINK_INFO_PACKET;
#define MAX_CONTROL_PACKET_LENGTH sizeof(PPTP_CALL_IN_REQUEST_PACKET)
#endif //PROTOCOL_H
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