| // |
| // |
| // 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_SRC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H |
| #define GRPC_SRC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <grpc/slice.h> |
| |
| struct grpc_base64_decode_context { |
| // input/output: |
| const uint8_t* input_cur; |
| const 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(const 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(const grpc_slice& input, |
| size_t output_length); |
| |
| // Infer the length of decoded data from encoded data. |
| size_t grpc_chttp2_base64_infer_length_after_decode(const grpc_slice& slice); |
| |
| #endif // GRPC_SRC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H |