~ubuntu-branches/ubuntu/lucid/openssh/lucid

/* $OpenBSD: buffer.h,v 1.17 2008/05/08 06:59:01 markus Exp $ */

/*

 * Author: Tatu Ylonen <ylo@cs.hut.fi>

 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland

 *                    All rights reserved

 * Code for manipulating FIFO buffers.

 *

 * As far as I am concerned, the code I have written for this software

 * can be used freely for any purpose.  Any derived versions of this

 * software must be clearly marked as such, and if the derived work is

 * incompatible with the protocol description in the RFC file, it must be

 * called by a name other than "ssh" or "Secure Shell".

 */

#ifndef BUFFER_H

#define BUFFER_H

typedef struct {

	u_char	*buf;		/* Buffer for data. */

	u_int	 alloc;		/* Number of bytes allocated for data. */

	u_int	 offset;	/* Offset of first byte containing data. */

	u_int	 end;		/* Offset of last byte containing data. */

}       Buffer;

void	 buffer_init(Buffer *);

void	 buffer_clear(Buffer *);

void	 buffer_free(Buffer *);

u_int	 buffer_len(Buffer *);

void	*buffer_ptr(Buffer *);

void	 buffer_append(Buffer *, const void *, u_int);

void	*buffer_append_space(Buffer *, u_int);

int	 buffer_check_alloc(Buffer *, u_int);

void	 buffer_get(Buffer *, void *, u_int);

void	 buffer_consume(Buffer *, u_int);

void	 buffer_consume_end(Buffer *, u_int);

void     buffer_dump(Buffer *);

int	 buffer_get_ret(Buffer *, void *, u_int);

int	 buffer_consume_ret(Buffer *, u_int);

int	 buffer_consume_end_ret(Buffer *, u_int);

#include <openssl/bn.h>

void    buffer_put_bignum(Buffer *, const BIGNUM *);

void    buffer_put_bignum2(Buffer *, const BIGNUM *);

void	buffer_get_bignum(Buffer *, BIGNUM *);

void	buffer_get_bignum2(Buffer *, BIGNUM *);

u_short	buffer_get_short(Buffer *);

void	buffer_put_short(Buffer *, u_short);

u_int	buffer_get_int(Buffer *);

void    buffer_put_int(Buffer *, u_int);

u_int64_t buffer_get_int64(Buffer *);

void	buffer_put_int64(Buffer *, u_int64_t);

int     buffer_get_char(Buffer *);

void    buffer_put_char(Buffer *, int);

void   *buffer_get_string(Buffer *, u_int *);

void   *buffer_get_string_ptr(Buffer *, u_int *);

void    buffer_put_string(Buffer *, const void *, u_int);

void	buffer_put_cstring(Buffer *, const char *);

#define buffer_skip_string(b) \

    do { u_int l = buffer_get_int(b); buffer_consume(b, l); } while (0)

int	buffer_put_bignum_ret(Buffer *, const BIGNUM *);

int	buffer_get_bignum_ret(Buffer *, BIGNUM *);

int	buffer_put_bignum2_ret(Buffer *, const BIGNUM *);

int	buffer_get_bignum2_ret(Buffer *, BIGNUM *);

int	buffer_get_short_ret(u_short *, Buffer *);

int	buffer_get_int_ret(u_int *, Buffer *);

int	buffer_get_int64_ret(u_int64_t *, Buffer *);

void	*buffer_get_string_ret(Buffer *, u_int *);

int	buffer_get_char_ret(char *, Buffer *);

#endif				/* BUFFER_H */