444ef1f706
Give a load of internal symbols "_olm_" prefixes. This better delineates the public and private interfaces in the module, and helps avoid internal symbols leaking out and possibly being abused.
77 lines
2 KiB
C
77 lines
2 KiB
C
/* Copyright 2015, 2016 OpenMarket Ltd
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/* C bindings for base64 functions */
|
|
|
|
|
|
#ifndef OLM_BASE64_H_
|
|
#define OLM_BASE64_H_
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
/**
|
|
* The number of bytes of unpadded base64 needed to encode a length of input.
|
|
*/
|
|
size_t _olm_encode_base64_length(
|
|
size_t input_length
|
|
);
|
|
|
|
/**
|
|
* Encode the raw input as unpadded base64.
|
|
* Writes encode_base64_length(input_length) bytes to the output buffer.
|
|
* The input can overlap with the last three quarters of the output buffer.
|
|
* That is, the input pointer may be output + output_length - input_length.
|
|
*
|
|
* Returns number of bytes encoded
|
|
*/
|
|
size_t _olm_encode_base64(
|
|
uint8_t const * input, size_t input_length,
|
|
uint8_t * output
|
|
);
|
|
|
|
/**
|
|
* The number of bytes of raw data a length of unpadded base64 will encode to.
|
|
* Returns size_t(-1) if the length is not a valid length for base64.
|
|
*/
|
|
size_t _olm_decode_base64_length(
|
|
size_t input_length
|
|
);
|
|
|
|
/**
|
|
* Decodes the unpadded base64 input to raw bytes.
|
|
* Writes decode_base64_length(input_length) bytes to the output buffer.
|
|
* The output can overlap with the first three quarters of the input buffer.
|
|
* That is, the input pointers and output pointer may be the same.
|
|
*
|
|
* Returns number of bytes decoded
|
|
*/
|
|
size_t _olm_decode_base64(
|
|
uint8_t const * input, size_t input_length,
|
|
uint8_t * output
|
|
);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
#endif
|
|
|
|
|
|
#endif /* OLM_BASE64_H_ */
|