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 FOO_MAX_LEN = 1024;
29 constexpr size_t U32_AT_SIZE = 4;
30 constexpr uint32_t CODE_MAX = 50;
31 static InstalldHost installdHost;
32
DoSomethingInterestingWithMyAPI(const char * data,size_t size)33 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
34 {
35 for (uint32_t code = 0; code <= CODE_MAX; code++) {
36 MessageParcel datas;
37 std::u16string descriptor = InstalldHost::GetDescriptor();
38 datas.WriteInterfaceToken(descriptor);
39 datas.WriteBuffer(data, size);
40 datas.RewindRead(0);
41 MessageParcel reply;
42 MessageOption option;
43 DelayedSingleton<BundleMgrService>::GetInstance()->OnStop();
44 installdHost.OnRemoteRequest(code, datas, reply, option);
45 }
46 return true;
47 }
48 }
49
50 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)51 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
52 {
53 /* Run your code on data */
54 if (data == nullptr) {
55 return 0;
56 }
57
58 if (size < OHOS::U32_AT_SIZE) {
59 return 0;
60 }
61
62 /* Validate the length of size */
63 if (size > OHOS::FOO_MAX_LEN) {
64 return 0;
65 }
66
67 char* ch = static_cast<char*>(malloc(size + 1));
68 if (ch == nullptr) {
69 return 0;
70 }
71
72 (void)memset_s(ch, size + 1, 0x00, size + 1);
73 if (memcpy_s(ch, size, data, size) != EOK) {
74 free(ch);
75 ch = nullptr;
76 return 0;
77 }
78
79 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
80 free(ch);
81 ch = nullptr;
82 return 0;
83 }