36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2015 Google, Inc.
|
||
|
|
*
|
||
|
|
* This software is licensed under the terms of the GNU General Public
|
||
|
|
* License version 2, as published by the Free Software Foundation, and
|
||
|
|
* may be copied, distributed, and modified under those terms.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __INCLUDE_B64_DECODE_H__
|
||
|
|
#define __INCLUDE_B64_DECODE_H__
|
||
|
|
|
||
|
|
#include <stddef.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* A function to convert a buffer of base64 format data into its source.
|
||
|
|
*
|
||
|
|
* The user provides output buffer of the size guaranteed to fit the result.
|
||
|
|
*
|
||
|
|
* Returns the size of the decoded data or zero if invalid charactes were
|
||
|
|
* encountered in the input buffer.
|
||
|
|
*/
|
||
|
|
size_t b64_decode(const uint8_t *input_data,
|
||
|
|
size_t input_length,
|
||
|
|
uint8_t *output_data);
|
||
|
|
|
||
|
|
/* A macro to derive decoded size of a base64 encoded blob. */
|
||
|
|
#define B64_DECODED_SIZE(encoded_size) (((encoded_size) * 3)/4)
|
||
|
|
|
||
|
|
#endif
|