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 #define private public
17 #include "bundleinstalldhost_fuzzer.h"
18
19 #include <cstddef>
20 #include <cstdint>
21 #include "ipc/installd_host.h"
22 #include "bundle_mgr_service.h"
23 #include "message_parcel.h"
24 #include "securec.h"
25
26 using namespace OHOS::AppExecFwk;
27 namespace OHOS {
28 constexpr size_t U32_AT_SIZE = 4;
29 constexpr uint32_t CODE_MAX = 56;
30 static InstalldHost installdHost;
31
DoSomethingInterestingWithMyAPI(const char * data,size_t size)32 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
33 {
34 for (uint32_t code = 0; code <= CODE_MAX; code++) {
35 MessageParcel datas;
36 std::u16string descriptor = InstalldHost::GetDescriptor();
37 datas.WriteInterfaceToken(descriptor);
38 datas.WriteBuffer(data, size);
39 datas.RewindRead(0);
40 MessageParcel reply;
41 MessageOption option;
42 DelayedSingleton<BundleMgrService>::GetInstance()->OnStop();
43 installdHost.OnRemoteRequest(code, datas, reply, option);
44 }
45 return true;
46 }
47 }
48
49 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)50 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
51 {
52 /* Run your code on data */
53 if (data == nullptr) {
54 return 0;
55 }
56
57 if (size < OHOS::U32_AT_SIZE) {
58 return 0;
59 }
60
61 char* ch = static_cast<char*>(malloc(size + 1));
62 if (ch == nullptr) {
63 return 0;
64 }
65
66 (void)memset_s(ch, size + 1, 0x00, size + 1);
67 if (memcpy_s(ch, size, data, size) != EOK) {
68 free(ch);
69 ch = nullptr;
70 return 0;
71 }
72
73 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
74 free(ch);
75 ch = nullptr;
76 return 0;
77 }