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/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
*
* 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".
*/
/* RCSID("$OpenBSD: bufaux.h,v 1.11 2001/01/21 19:05:45 markus Exp $"); */
#ifndef BUFAUX_H
#define BUFAUX_H
#include "buffer.h"
#include <openssl/bn.h>
/*
* Stores an BIGNUM in the buffer with a 2-byte msb first bit count, followed
* by (bits+7)/8 bytes of binary data, msb first.
*/
void buffer_put_bignum(Buffer * buffer, BIGNUM * value);
void buffer_put_bignum2(Buffer * buffer, BIGNUM * value);
/* Retrieves an BIGNUM from the buffer. */
int buffer_get_bignum(Buffer * buffer, BIGNUM * value);
int buffer_get_bignum2(Buffer *buffer, BIGNUM * value);
/* Returns an integer from the buffer (4 bytes, msb first). */
u_int buffer_get_int(Buffer * buffer);
u_int64_t buffer_get_int64(Buffer *buffer);
/* Stores an integer in the buffer in 4 bytes, msb first. */
void buffer_put_int(Buffer * buffer, u_int value);
void buffer_put_int64(Buffer *buffer, u_int64_t value);
/* Returns a character from the buffer (0 - 255). */
int buffer_get_char(Buffer * buffer);
/* Stores a character in the buffer. */
void buffer_put_char(Buffer * buffer, int value);
/*
* Returns an arbitrary binary string from the buffer. The string cannot be
* longer than 256k. The returned value points to memory allocated with
* xmalloc; it is the responsibility of the calling function to free the
* data. If length_ptr is non-NULL, the length of the returned data will be
* stored there. A null character will be automatically appended to the
* returned string, and is not counted in length.
*/
char *buffer_get_string(Buffer * buffer, u_int *length_ptr);
/* Stores and arbitrary binary string in the buffer. */
void buffer_put_string(Buffer * buffer, const void *buf, u_int len);
void buffer_put_cstring(Buffer *buffer, const char *s);
#endif /* BUFAUX_H */
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