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/* $OpenBSD: packets.h,v 1.4 2002/06/09 08:13:08 todd Exp $ */
/*
* Copyright 1997-2000 Niels Provos <provos@citi.umich.edu>
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Niels Provos.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
/*
* packets.h:
*/
#ifndef _PACKETS_H_
#define _PACKETS_H_
#define COOKIE_REQUEST 0
#define COOKIE_RESPONSE 1
#define VALUE_REQUEST 2
#define VALUE_RESPONSE 3
#define IDENTITY_REQUEST 4
#define SECRET_RESPONSE 5
#define SECRET_REQUEST 6
#define IDENTITY_RESPONSE 7
#define SPI_NEEDED 8
#define SPI_UPDATE 9
#define BAD_COOKIE 10
#define RESOURCE_LIMIT 11
#define VERIFICATION_FAILURE 12
#define MESSAGE_REJECT 13
#define COOKIE_SIZE 16
#define SPI_SIZE 4
/* General packet definition */
#define FLD_CONST 0
#define FLD_VARPRE 1
#define FLD_ATTRIB 2
#define FMD_ATT_ONE 0
#define FMD_ATT_FILL 1
struct packet_sub {
char *field; /* Name of Field */
int type; /* Type of Field */
int mod; /* Modifier: */
u_int16_t size; /* Pointer to start of Field */
void *where; /* Pointer to start of Field */
};
struct packet {
char *name;
int min, max;
struct packet_sub *parts;
};
struct cookie_request {
u_int8_t icookie[COOKIE_SIZE];
u_int8_t rcookie[COOKIE_SIZE];
u_int8_t type;
u_int8_t counter;
};
#define COOKIE_REQUEST_PACKET_SIZE sizeof(struct cookie_request)
struct cookie_response {
u_int8_t icookie[COOKIE_SIZE];
u_int8_t rcookie[COOKIE_SIZE];
u_int8_t type;
u_int8_t counter;
};
#define COOKIE_RESPONSE_MIN sizeof(struct cookie_response)
#define COOKIE_RESPONSE_SCHEMES(p) (((u_int8_t *)(p))+COOKIE_RESPONSE_MIN)
#define SCHEME_SIZE(p) (4 + ((u_int16_t)*((p)+2))*256 + (*((p)+3)))
struct value_request {
u_int8_t icookie[COOKIE_SIZE];
u_int8_t rcookie[COOKIE_SIZE];
u_int8_t type;
u_int8_t counter;
u_int8_t scheme[2];
};
#define VALUE_REQUEST_MIN sizeof(struct value_request)
#define VALUE_REQUEST_VALUE(p) (((u_int8_t *)(p))+VALUE_REQUEST_MIN)
struct value_response {
u_int8_t icookie[COOKIE_SIZE];
u_int8_t rcookie[COOKIE_SIZE];
u_int8_t type;
u_int8_t reserved[3];
};
#define VALUE_RESPONSE_MIN sizeof(struct value_response)
#define VALUE_RESPONSE_VALUE(p) (((u_int8_t *)(p))+VALUE_RESPONSE_MIN)
struct identity_message {
u_int8_t icookie[COOKIE_SIZE];
u_int8_t rcookie[COOKIE_SIZE];
u_int8_t type;
u_int8_t lifetime[3];
u_int8_t SPI[SPI_SIZE];
};
#define IDENTITY_MESSAGE_MIN sizeof(struct identity_message)
#define IDENTITY_MESSAGE_CHOICE(p) (((u_int8_t *)(p))+IDENTITY_MESSAGE_MIN)
#define IDENTITY_MESSAGE_IDENT(p) (IDENTITY_MESSAGE_CHOICE(p)+*((u_int8_t *)(p)+1))
struct spi_needed {
u_int8_t icookie[COOKIE_SIZE];
u_int8_t rcookie[COOKIE_SIZE];
u_int8_t type;
u_int8_t reserved[7];
};
#define SPI_NEEDED_MIN sizeof(struct spi_needed)
#define SPI_NEEDED_VERIFICATION(p) (((u_int8_t *)(p))+SPI_NEEDED_MIN)
struct spi_update {
u_int8_t icookie[COOKIE_SIZE];
u_int8_t rcookie[COOKIE_SIZE];
u_int8_t type;
u_int8_t lifetime[3];
u_int8_t SPI[SPI_SIZE];
};
#define SPI_UPDATE_MIN sizeof(struct spi_update)
#define SPI_UPDATE_VERIFICATION(p) (((u_int8_t *)(p))+SPI_UPDATE_MIN)
struct error_message {
u_int8_t icookie[COOKIE_SIZE];
u_int8_t rcookie[COOKIE_SIZE];
u_int8_t type;
};
#define ERROR_MESSAGE_PACKET_SIZE sizeof(struct error_message)
struct message_reject {
u_int8_t icookie[COOKIE_SIZE];
u_int8_t rcookie[COOKIE_SIZE];
u_int8_t type;
u_int8_t badtype;
u_int16_t offset;
};
#define MESSAGE_REJECT_PACKET_SIZE sizeof(struct message_reject)
#endif /* _PACKETS_H_ */
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