1 //
2 //
3 // Copyright 2019 gRPC authors.
4 //
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
8 //
9 // http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16 //
17 //
18
19 #include <stdint.h>
20 #include <string.h>
21
22 #include <grpc/compression.h>
23 #include <grpc/grpc.h>
24 #include <grpc/slice.h>
25 #include <grpc/slice_buffer.h>
26
27 #include "src/core/lib/compression/message_compress.h"
28
29 bool squelch = true;
30
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)31 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
32 if (size < 1) return 0;
33
34 // Instead of rolling something complicated to convert a uint8_t to the enum,
35 // just bail out if it isn't trivially convertible.
36 if (data[0] >= GRPC_COMPRESS_ALGORITHMS_COUNT) return 0;
37 const auto compression_algorithm =
38 static_cast<grpc_compression_algorithm>(data[0]);
39
40 grpc_init();
41 grpc_slice_buffer input_buffer;
42 grpc_slice_buffer_init(&input_buffer);
43 grpc_slice_buffer_add(&input_buffer,
44 grpc_slice_from_copied_buffer(
45 reinterpret_cast<const char*>(data + 1), size - 1));
46 grpc_slice_buffer output_buffer;
47 grpc_slice_buffer_init(&output_buffer);
48
49 grpc_msg_decompress(compression_algorithm, &input_buffer, &output_buffer);
50
51 grpc_slice_buffer_destroy(&input_buffer);
52 grpc_slice_buffer_destroy(&output_buffer);
53 grpc_shutdown();
54 return 0;
55 }
56