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/*
* Dropbear - a SSH2 server
*
* Copyright (c) 2002,2003 Matt Johnston
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE. */
#ifndef DROPBEAR_BUFFER_H_
#define DROPBEAR_BUFFER_H_
#include "includes.h"
struct buf {
/* don't manipulate data member outside of buffer.c - it
is a pointer into the malloc holding buffer itself */
unsigned char * data;
unsigned int len; /* the used size */
unsigned int pos;
unsigned int size; /* the memory size */
};
typedef struct buf buffer;
buffer * buf_new(unsigned int size);
/* Possibly returns a new buffer*, like realloc() */
buffer * buf_resize(buffer *buf, unsigned int newsize);
void buf_free(buffer* buf);
void buf_burn(buffer* buf);
buffer* buf_newcopy(buffer* buf);
void buf_setlen(buffer* buf, unsigned int len);
void buf_incrlen(buffer* buf, unsigned int incr);
void buf_setpos(buffer* buf, unsigned int pos);
void buf_incrpos(buffer* buf, int incr); /* -ve is ok, to go backwards */
void buf_incrwritepos(buffer* buf, unsigned int incr);
unsigned char buf_getbyte(buffer* buf);
unsigned char buf_getbool(buffer* buf);
void buf_putbyte(buffer* buf, unsigned char val);
unsigned char* buf_getptr(buffer* buf, unsigned int len);
unsigned char* buf_getwriteptr(buffer* buf, unsigned int len);
unsigned char* buf_getstring(buffer* buf, unsigned int *retlen);
buffer * buf_getstringbuf(buffer *buf);
void buf_eatstring(buffer *buf);
void buf_putint(buffer* buf, unsigned int val);
void buf_putstring(buffer* buf, const unsigned char* str, unsigned int len);
void buf_putbufstring(buffer *buf, const buffer* buf_str);
void buf_putbytes(buffer *buf, const unsigned char *bytes, unsigned int len);
void buf_putmpint(buffer* buf, mp_int * mp);
int buf_getmpint(buffer* buf, mp_int* mp);
unsigned int buf_getint(buffer* buf);
#endif /* DROPBEAR_BUFFER_H_ */
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