mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-22 07:28:10 +00:00
63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/**
|
|
* Copyright (c) 2023 Trezor Company s.r.o.
|
|
*
|
|
* 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 HMAC_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 __BUFFER_H
|
|
#define __BUFFER_H
|
|
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#include "options.h"
|
|
|
|
// Buffer reader struct, wraps a pointer to const data.
|
|
typedef struct {
|
|
const uint8_t *data;
|
|
size_t size;
|
|
size_t pos;
|
|
} BUFFER_READER;
|
|
|
|
// Buffer writer struct, wraps a pointer to non-const data.
|
|
typedef struct {
|
|
uint8_t *data;
|
|
size_t size;
|
|
size_t pos;
|
|
} BUFFER_WRITER;
|
|
|
|
void buffer_reader_init(BUFFER_READER *buf, const uint8_t *data, size_t size);
|
|
void buffer_writer_init(BUFFER_WRITER *buf, uint8_t *data, size_t size);
|
|
size_t __wur buffer_remaining(BUFFER_READER *buf);
|
|
bool __wur buffer_ptr(BUFFER_READER *buf, const uint8_t **ptr);
|
|
bool __wur buffer_peek(const BUFFER_READER *buf, uint8_t *byte);
|
|
bool __wur buffer_get(BUFFER_READER *buf, uint8_t *byte);
|
|
bool __wur buffer_seek(BUFFER_READER *buf, size_t pos);
|
|
bool __wur buffer_read_buffer(BUFFER_READER *src, BUFFER_READER *dest,
|
|
size_t size);
|
|
void buffer_lstrip(BUFFER_READER *buf, uint8_t byte);
|
|
bool __wur buffer_put(BUFFER_WRITER *writer, uint8_t byte);
|
|
bool __wur buffer_write_array(BUFFER_WRITER *writer, const uint8_t *src,
|
|
size_t size);
|
|
bool __wur buffer_write_buffer(BUFFER_WRITER *dest, BUFFER_READER *src);
|
|
size_t __wur buffer_written_size(BUFFER_WRITER *writer);
|
|
|
|
#endif // __BUFFER_H
|