/*
* pptpdefs.h
*
* PPTP structs and defines
*
* $Id: pptpdefs.h,v 1.4 2006/12/08 00:01:40 quozl Exp $
*/
#ifndef _PPTPD_PPTPDEFS_H
#define _PPTPD_PPTPDEFS_H
/* define "portable" htons, etc, copied to make Ananian's gre stuff work. */
#define hton8(x) (x)
#define ntoh8(x) (x)
#define hton16(x) htons(x)
#define ntoh16(x) ntohs(x)
#define hton32(x) htonl(x)
#define ntoh32(x) ntohl(x)
#include <sys/types.h>
/* PPTP ctrl message port */
#define PPTP_PORT 1723
/* PPTP gre prototype */
#define PPTP_PROTO 47
/* PPTP version */
#define PPTP_VERSION 0x0100
#define PPTP_FIRMWARE_VERSION 0x0001
/* Hostname and Vendor */
#define PPTP_HOSTNAME "local"
#define PPTP_VENDOR "linux"
#define MAX_HOSTNAME_SIZE 64
#define MAX_VENDOR_SIZE 64
/* Magic Cookie */
#define PPTP_MAGIC_COOKIE 0x1a2b3c4d
/* Message types */
#define PPTP_CTRL_MESSAGE 1
/* Maximum size of any PPTP control packet we will get */
#define PPTP_MAX_CTRL_PCKT_SIZE 220
/* Control Connection Management */
#define START_CTRL_CONN_RQST 1
#define START_CTRL_CONN_RPLY 2
#define STOP_CTRL_CONN_RQST 3
#define STOP_CTRL_CONN_RPLY 4
#define ECHO_RQST 5
#define ECHO_RPLY 6
/* Call Management */
#define OUT_CALL_RQST 7
#define OUT_CALL_RPLY 8
#define IN_CALL_RQST 9
#define IN_CALL_RPLY 10
#define IN_CALL_CONN 11
#define CALL_CLR_RQST 12
#define CALL_DISCONN_NTFY 13
/* Error Reporting */
#define WAN_ERR_NTFY 14
/* PPP Session Control */
#define SET_LINK_INFO 15
/* how long before a link is idle? (seconds) */
#define IDLE_WAIT 60
/* how long should we wait for an echo reply? (seconds) */
#define MAX_ECHO_WAIT 60
#define RESERVED 0x0000
/* Start Control Connection Reply */
#define ASYNCHRONOUS_FRAMING 0x00000001
#define SYNCHRONOUS_FRAMING 0x00000002
#define ANALOG_ACCESS 0x00000001
#define DIGITAL_ACCESS 0x00000002
/* Our properties - we don't actually have any physical serial i/f's and only want
* one call per client!
*/
#define OUR_FRAMING 0x00000000
#define OUR_BEARER 0x00000000
#define MAX_CHANNELS 0x0001
/* Out Call Reply Defines */
#define PCKT_RECV_WINDOW_SIZE 0x0001
#define PCKT_PROCESS_DELAY 0x0000
#define CHANNEL_ID 0x00000000
/* ERROR CODES */
#define NO_ERROR 0x00
/* CALL_CLEAR RESULT CODES */
#define LOST_CARRIER 0x01
#define ADMIN_SHUTDOWN 0x03
#define CALL_CLEAR_REQUEST 0x04
/* RESULT CODES */
#define CONNECTED 0x01
#define DISCONNECTED 0x01
#define GENERAL_ERROR 0x02 /* also for ERROR CODES, CALL CLEAR */
#define NO_CARRIER 0x03
#define BUSY 0x04
#define NO_DIAL_TONE 0x05
#define TIME_OUT 0x06
#define DO_NOT_ACCEPT 0x07
/* CTRL CLOSE CODES */
#define GENERAL_STOP_CTRL 0x01
#define STOP_PROTOCOL 0x02
#define STOP_LOCAL_SHUTDOWN 0x03
/* PPTP CTRL structs */
struct pptp_header {
u_int16_t length; /* pptp message length incl header */
u_int16_t pptp_type; /* pptp message type */
u_int32_t magic; /* magic cookie */
u_int16_t ctrl_type; /* control message type */
u_int16_t reserved0; /* reserved */
};
struct pptp_start_ctrl_conn_rqst {
struct pptp_header header; /* pptp header */
u_int16_t version; /* pptp protocol version */
u_int16_t reserved1; /* reserved */
u_int32_t framing_cap; /* framing capabilities */
u_int32_t bearer_cap; /* bearer capabilities */
u_int16_t max_channels; /* maximum channels */
u_int16_t firmware_rev; /* firmware revision */
u_int8_t hostname[MAX_HOSTNAME_SIZE]; /* hostname */
u_int8_t vendor[MAX_VENDOR_SIZE]; /* vendor */
};
struct pptp_start_ctrl_conn_rply {
struct pptp_header header; /* pptp header */
u_int16_t version; /* pptp protocol version */
u_int8_t result_code; /* result code */
u_int8_t error_code; /* error code */
u_int32_t framing_cap; /* framing capabilities */
u_int32_t bearer_cap; /* bearer capabilities */
u_int16_t max_channels; /* maximum channels */
u_int16_t firmware_rev; /* firmware revision */
u_int8_t hostname[MAX_HOSTNAME_SIZE]; /* hostname */
u_int8_t vendor[MAX_VENDOR_SIZE]; /* vendor */
};
struct pptp_stop_ctrl_conn_rqst {
struct pptp_header header; /* header */
u_int8_t reason; /* reason for closing */
u_int8_t reserved1; /* reserved */
u_int16_t reserved2; /* reserved */
};
struct pptp_stop_ctrl_conn_rply {
struct pptp_header header; /* header */
u_int8_t result_code; /* result code */
u_int8_t error_code; /* error code */
u_int16_t reserved1; /* reserved */
};
struct pptp_echo_rqst {
struct pptp_header header; /* header */
u_int32_t identifier; /* value to match rply with rqst */
};
struct pptp_echo_rply {
struct pptp_header header; /* header */
u_int32_t identifier; /* identifier of echo rqst */
u_int8_t result_code; /* result code */
u_int8_t error_code; /* error code */
u_int16_t reserved1; /* reserved */
};
struct pptp_out_call_rqst {
struct pptp_header header; /* header */
u_int16_t call_id; /* unique identifier to PAC-PNS pair */
u_int16_t call_serial; /* session identifier */
u_int32_t min_bps; /* minimum line speed */
u_int32_t max_bps; /* maximum line speed */
u_int32_t bearer_type; /* bearer type */
u_int32_t framing_type; /* framing type */
u_int16_t pckt_recv_size; /* packet recv window size */
u_int16_t pckt_delay; /* packet processing delay */
u_int16_t phone_len; /* phone number length */
u_int16_t reserved1; /* reserved */
u_int8_t phone_num[64]; /* phone number */
u_int8_t subaddress[64]; /* additional dialing info */
};
struct pptp_out_call_rply {
struct pptp_header header; /* header */
u_int16_t call_id; /* unique identifier to PAC-PNS pair */
u_int16_t call_id_peer; /* set to call_id of the call rqst */
u_int8_t result_code; /* result code */
u_int8_t error_code; /* error code */
u_int16_t cause_code; /* additional failure information */
u_int32_t speed; /* actual connection speed */
u_int16_t pckt_recv_size; /* packet recv window size */
u_int16_t pckt_delay; /* packet processing delay */
u_int32_t channel_id; /* physical channel ID */
};
struct pptp_in_call_rqst {
struct pptp_header header; /* header */
u_int16_t call_id; /* unique identifier for tunnel */
u_int16_t call_serial; /* session identifier */
u_int32_t bearer_type; /* bearer capability */
u_int32_t channel_id; /* channel ID */
u_int16_t dialed_len; /* dialed length */
u_int16_t dialing_len; /* dialing length */
u_int8_t dialed_num[64]; /* number that was dialed by the caller */
u_int8_t dialing_num[64]; /* the number from which the call was placed */
u_int8_t subaddress[64]; /* additional dialing information */
};
struct pptp_in_call_rply {
struct pptp_header header; /* header */
u_int16_t call_id; /* unique identifier for the tunnel */
u_int16_t peers_call_id; /* set to rcvd call ID */
u_int8_t result_code; /* result code */
u_int8_t error_code; /* error code */
u_int16_t pckt_recv_size; /* packet recv window size */
u_int16_t pckt_delay; /* packet transmit delay */
u_int16_t reserved1; /* reserved */
};
struct pptp_in_call_connect {
struct pptp_header header; /* header */
u_int16_t peers_call_id; /* set to rcvd call ID */
u_int16_t reserved1; /* reserved */
u_int32_t speed; /* connect speed */
u_int16_t pckt_recv_size; /* packet rcvd window size */
u_int16_t pckt_delay; /* packet transmit delay */
u_int32_t framing_type; /* framing type */
};
struct pptp_call_clr_rqst {
struct pptp_header header; /* header */
u_int16_t call_id; /* call ID assigned by the PNS */
u_int16_t reserved1; /* reserved */
};
struct pptp_call_disconn_ntfy {
struct pptp_header header; /* header */
u_int16_t call_id; /* call ID assigned by the PAC */
u_int8_t result_code; /* result code */
u_int8_t error_code; /* error code */
u_int16_t cause_code; /* additional disconnect info */
u_int16_t reserved1; /* reserved */
u_int8_t call_stats[128]; /* vendor specific call stats */
};
struct pptp_wan_err_ntfy {
struct pptp_header header; /* header */
u_int16_t peers_call_id; /* call ID assigned by PNS */
u_int16_t reserved1; /* reserved */
u_int32_t crc_errors; /* # of PPP frames rcvd with CRC errors */
u_int32_t framing_errors; /* # of improperly framed PPP pckts */
u_int32_t hardware_overruns; /* # of receive buffer overruns */
u_int32_t buff_overruns; /* # of buffer overruns */
u_int32_t timeout_errors; /* # of timeouts */
u_int32_t align_errors; /* # of alignment errors */
};
struct pptp_set_link_info {
struct pptp_header header;
u_int16_t peers_call_id; /* call ID assigned by PAC */
u_int16_t reserved1; /* reserved */
u_int32_t send_accm; /* send ACCM value the client should use */
u_int32_t recv_accm; /* recv ACCM value the client should use */
};
/* GRE and PPP structs */
/* Copied from C. S. Ananian */
#define HDLC_FLAG 0x7E
#define HDLC_ESCAPE 0x7D
#define PPTP_GRE_PROTO 0x880B
#define PPTP_GRE_VER 0x1
#define PPTP_GRE_FLAG_C 0x80
#define PPTP_GRE_FLAG_R 0x40
#define PPTP_GRE_FLAG_K 0x20
#define PPTP_GRE_FLAG_S 0x10
#define PPTP_GRE_FLAG_A 0x80
#define PPTP_GRE_IS_C(f) ((f)&PPTP_GRE_FLAG_C)
#define PPTP_GRE_IS_R(f) ((f)&PPTP_GRE_FLAG_R)
#define PPTP_GRE_IS_K(f) ((f)&PPTP_GRE_FLAG_K)
#define PPTP_GRE_IS_S(f) ((f)&PPTP_GRE_FLAG_S)
#define PPTP_GRE_IS_A(f) ((f)&PPTP_GRE_FLAG_A)
struct pptp_gre_header {
u_int8_t flags; /* bitfield */
u_int8_t ver; /* should be PPTP_GRE_VER (enhanced GRE) */
u_int16_t protocol; /* should be PPTP_GRE_PROTO (ppp-encaps) */
u_int16_t payload_len; /* size of ppp payload, not inc. gre header */
u_int16_t call_id; /* peer's call_id for this session */
u_int32_t seq; /* sequence number. Present if S==1 */
u_int32_t ack; /* seq number of highest packet recieved by */
/* sender in this session */
};
/* For our call ID pairs */
#define PNS_VALUE 0
#define PAC_VALUE 1
#define GET_VALUE(which, where) ((which ## _VALUE) ? ((where) & 0xffff) : ((where) >> 16))
#define NOTE_VALUE(which, where, what) ((which ## _VALUE) \
? ((where) = ((where) & 0xffff0000) | (what)) \
: ((where) = ((where) & 0xffff) | ((what) << 16)))
#endif /* !_PPTPD_PPTPDEFS_H */
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