1 /*
2 * Copyright (c) 2023 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 "overlaymanagerhost_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "overlay_manager_host.h"
22 #include "securec.h"
23
24 using namespace OHOS::AppExecFwk;
25 namespace OHOS {
26 constexpr size_t U32_AT_SIZE = 4;
27 constexpr uint32_t CODE_MAX = 8;
28
DoSomethingInterestingWithMyAPI(const char * data,size_t size)29 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
30 {
31 for (uint32_t code = 0; code <= CODE_MAX; code++) {
32 MessageParcel datas;
33 std::u16string descriptor = OverlayManagerHost::GetDescriptor();
34 datas.WriteInterfaceToken(descriptor);
35 datas.WriteBuffer(data, size);
36 datas.RewindRead(0);
37 MessageParcel reply;
38 MessageOption option;
39 OverlayManagerHost overlayManagerHost;
40 overlayManagerHost.OnRemoteRequest(code, datas, reply, option);
41 }
42 return true;
43 }
44 }
45
46 // Fuzzer entry point.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)47 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
48 {
49 /* Run your code on data */
50 if (data == nullptr) {
51 return 0;
52 }
53
54 if (size < OHOS::U32_AT_SIZE) {
55 return 0;
56 }
57
58 char* ch = static_cast<char*>(malloc(size + 1));
59 if (ch == nullptr) {
60 return 0;
61 }
62
63 (void)memset_s(ch, size + 1, 0x00, size + 1);
64 if (memcpy_s(ch, size, data, size) != EOK) {
65 free(ch);
66 ch = nullptr;
67 return 0;
68 }
69 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
70 free(ch);
71 ch = nullptr;
72 return 0;
73 }