1 /*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "downloadbasenotify_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "request_notify.h"
22 #include "message_parcel.h"
23
24 using namespace OHOS::Request;
25
26 namespace OHOS {
27 constexpr size_t THRESHOLD = 10;
28 constexpr int32_t OFFSET = 4;
29 const std::u16string DOWNLDBN_INTERFACE_TOKEN = u"ohos.miscseervice.request";
30
ConvertToUint32(const uint8_t * ptr)31 uint32_t ConvertToUint32(const uint8_t *ptr)
32 {
33 if (ptr == nullptr) {
34 return 0;
35 }
36 uint32_t bigvar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
37 return bigvar;
38 }
39
FuzzDownloadBaseNotify(const uint8_t * rawData,size_t size)40 bool FuzzDownloadBaseNotify(const uint8_t *rawData, size_t size)
41 {
42 uint32_t code = ConvertToUint32(rawData);
43 rawData = rawData + OFFSET;
44 size = size - OFFSET;
45
46 MessageParcel data;
47 data.WriteInterfaceToken(DOWNLDBN_INTERFACE_TOKEN);
48 data.WriteBuffer(rawData, size);
49 data.RewindRead(0);
50 MessageParcel reply;
51 MessageOption option;
52
53 napi_env env = nullptr;
54 napi_value value = nullptr;
55 sptr<RequestNotify> download = new RequestNotify(env, value);
56 download->OnRemoteRequest(code, data, reply, option);
57
58 return true;
59 }
60 } // namespace OHOS
61
62 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)63 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
64 {
65 if (size < OHOS::THRESHOLD) {
66 return 0;
67 }
68
69 /* Run your code on data */
70 OHOS::FuzzDownloadBaseNotify(data, size);
71 return 0;
72 }
73