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 <grpc/grpc.h>
20 #include <stdbool.h>
21 #include <stdint.h>
22 #include <string.h>
23
24 #include "src/core/lib/compression/message_compress.h"
25 #include "src/core/lib/security/credentials/credentials.h"
26 #include "test/core/util/memory_counters.h"
27
28 bool squelch = true;
29 bool leak_check = 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_MESSAGE_COMPRESS_ALGORITHMS_COUNT) return 0;
37 const auto compression_algorithm =
38 static_cast<grpc_message_compression_algorithm>(data[0]);
39
40 grpc_core::testing::LeakDetector leak_detector(true);
41 grpc_init();
42 grpc_slice_buffer input_buffer;
43 grpc_slice_buffer_init(&input_buffer);
44 grpc_slice_buffer_add(&input_buffer,
45 grpc_slice_from_copied_buffer(
46 reinterpret_cast<const char*>(data + 1), size - 1));
47 grpc_slice_buffer output_buffer;
48 grpc_slice_buffer_init(&output_buffer);
49
50 grpc_msg_decompress(compression_algorithm, &input_buffer, &output_buffer);
51
52 grpc_slice_buffer_destroy(&input_buffer);
53 grpc_slice_buffer_destroy(&output_buffer);
54 grpc_shutdown_blocking();
55 return 0;
56 }
57