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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_compress(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