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/*
*
* Copyright 2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H
#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H
#include <grpc/support/slice.h>
#include <stdbool.h>
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. */
gpr_slice grpc_chttp2_base64_decode(gpr_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. */
gpr_slice grpc_chttp2_base64_decode_with_length(gpr_slice input,
size_t output_length);
#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H */
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