80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/*
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* RFC 1521 base64 encoding/decoding
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*
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* Copyright (C) 2018, Nordic Semiconductor ASA
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Adapted for Zephyr by Carles Cufi (carles.cufi@nordicsemi.no)
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* - Removed mbedtls_ prefixes
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* - Reworked coding style
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*/
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#ifndef __BASE64_H__
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#define __BASE64_H__
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#include <stddef.h>
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#include <zephyr/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Encode a buffer into base64 format
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*
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* @param dst destination buffer
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* @param dlen size of the destination buffer
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* @param olen number of bytes written
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* @param src source buffer
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* @param slen amount of data to be encoded
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*
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* @return 0 if successful, or -ENOMEM if the buffer is too small.
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* *olen is always updated to reflect the amount
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* of data that has (or would have) been written.
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* If that length cannot be represented, then no data is
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* written to the buffer and *olen is set to the maximum
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* length representable as a size_t.
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*
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* @note Call this function with dlen = 0 to obtain the
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* required buffer size in *olen
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*/
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int base64_encode(u8_t *dst, size_t dlen, size_t *olen, const u8_t *src,
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size_t slen);
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/**
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* @brief Decode a base64-formatted buffer
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*
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* @param dst destination buffer (can be NULL for checking size)
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* @param dlen size of the destination buffer
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* @param olen number of bytes written
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* @param src source buffer
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* @param slen amount of data to be decoded
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*
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* @return 0 if successful, -ENOMEM, or -EINVAL if the input data is
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* not correct. *olen is always updated to reflect the amount
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* of data that has (or would have) been written.
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*
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* @note Call this function with *dst = NULL or dlen = 0 to obtain
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* the required buffer size in *olen
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*/
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int base64_decode(u8_t *dst, size_t dlen, size_t *olen, const u8_t *src,
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size_t slen);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __BASE64_H__ */
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