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/*
*
* Copyright 2016 gRPC authors.
*
* 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.
*
*/
#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H
#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H
#include <grpc/slice.h>
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
struct grpc_base64_decode_context {
/* input/output: */
uint8_t* input_cur;
uint8_t* input_end;
uint8_t* output_cur;
uint8_t* output_end;
/* Indicate if the decoder should handle the tail of input data*/
bool contains_tail;
};
/* base64 decode a grpc_base64_decode_context util either input_end is reached
or output_end is reached. When input_end is reached, (input_end - input_cur)
is less than 4. When output_end is reached, (output_end - output_cur) is less
than 3. Returns false if decoding is failed. */
bool grpc_base64_decode_partial(struct grpc_base64_decode_context* ctx);
/* base64 decode a slice with pad chars. Returns a new slice, does not take
ownership of the input. Returns an empty slice if decoding is failed. */
grpc_slice grpc_chttp2_base64_decode(grpc_exec_ctx* exec_ctx, grpc_slice input);
/* base64 decode a slice without pad chars, data length is needed. Returns a new
slice, does not take ownership of the input. Returns an empty slice if
decoding is failed. */
grpc_slice grpc_chttp2_base64_decode_with_length(grpc_exec_ctx* exec_ctx,
grpc_slice input,
size_t output_length);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H */
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