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/* $OpenBSD: pptp_local.h,v 1.3 2010/07/02 21:20:57 yasuoka Exp $ */
/*-
* Copyright (c) 2009 Internet Initiative Japan Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef PPTP_LOCAL_H
#define PPTP_LOCAL_H 1
#ifndef countof
#define countof(x) (sizeof(x) / sizeof((x)[0]))
#endif
struct pptp_gre_header {
#if BYTE_ORDER == LITTLE_ENDIAN
uint8_t recur:3,
s:1,
S:1,
K:1,
R:1,
C:1;
uint8_t ver:3,
flags:4,
A:1;
#else
uint8_t C:1,
R:1,
K:1,
S:1,
s:1,
recur:3;
uint8_t A:1,
flags:4,
ver:3;
#endif
uint16_t protocol_type;
uint16_t payload_length;
uint16_t call_id;
} __attribute__((__packed__));
/* Commont part of the PPTP control packet */
struct pptp_ctrl_header {
uint16_t length;
uint16_t pptp_message_type;
uint32_t magic_cookie;
uint16_t control_message_type;
uint16_t reserved0;
} __attribute__((__packed__));
/* Start-Control-Connection-{Request,Reply} packet */
struct pptp_scc {
struct pptp_ctrl_header header;
uint16_t protocol_version;
uint8_t result_code;
uint8_t error_code;
uint32_t framing_caps;
uint32_t bearer_caps;
uint16_t max_channels;
uint16_t firmware_revision;
u_char host_name[64];
u_char vendor_string[64];
} __attribute__((__packed__));
/* Outgoing-Call-Request packet */
struct pptp_ocrq {
struct pptp_ctrl_header header;
uint16_t call_id;
uint16_t call_serial_number;
uint32_t maximum_bps;
uint32_t minimum_bps;
uint32_t bearer_type;
uint32_t framing_type;
uint16_t recv_winsz;
uint16_t packet_proccessing_delay;
uint16_t phone_number_length;
uint16_t reservied1;
u_char phone_number[64];
u_char subaddress[64];
} __attribute__((__packed__));
/* Outgoing-Call-Reply packet */
struct pptp_ocrp {
struct pptp_ctrl_header header;
uint16_t call_id;
uint16_t peers_call_id;
uint8_t result_code;
uint8_t error_code;
uint16_t cause_code;
uint32_t connect_speed;
uint16_t recv_winsz;
uint16_t packet_proccessing_delay;
uint32_t physical_channel_id;
} __attribute__((__packed__));
/* Echo-Request packet */
struct pptp_echo_rq {
struct pptp_ctrl_header header;
uint32_t identifier;
} __attribute__((__packed__));
/* Echo-Reply packet */
struct pptp_echo_rp {
struct pptp_ctrl_header header;
uint32_t identifier;
uint8_t result_code;
uint8_t error_code;
uint16_t reserved1;
} __attribute__((__packed__));
/* Set-Link-Info packet */
struct pptp_sli {
struct pptp_ctrl_header header;
uint16_t peers_call_id;
uint16_t reserved;
uint32_t send_accm;
uint32_t recv_accm;
} __attribute__((__packed__));
struct pptp_stop_ccrq {
struct pptp_ctrl_header header;
uint8_t reason;
uint8_t reserved1;
uint16_t reserved2;
} __attribute__((__packed__));
struct pptp_stop_ccrp {
struct pptp_ctrl_header header;
uint8_t result;
uint8_t error;
uint16_t reserved2;
} __attribute__((__packed__));
/* Call-Clear-Request packet */
struct pptp_ccr {
struct pptp_ctrl_header header;
uint16_t call_id;
uint16_t reserved1;
} __attribute__((__packed__));
/* Call-Disconnect-Notify packet */
struct pptp_cdn {
struct pptp_ctrl_header header;
uint16_t call_id;
uint8_t result_code;
uint8_t error_code;
uint16_t cause_code;
uint16_t reserved1;
char statistics[128];
} __attribute__((__packed__));
#define PPTP_GRE_PKT_SEQ_PRESENT 0x0001
#define PPTP_GRE_PKT_ACK_PRESENT 0x0002
#endif
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