1 /*
2 * Copyright (c) 2023-2024 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 "bundlemgrhost_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "bundle_mgr_host.h"
22 #include "securec.h"
23
24 using namespace OHOS::AppExecFwk;
25 namespace OHOS {
26 constexpr size_t FOO_MAX_LEN = 1024;
27 constexpr size_t U32_AT_SIZE = 4;
28 constexpr uint32_t CODE_MAX = 159;
29
30
DoSomethingInterestingWithMyAPI(const char * data,size_t size)31 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
32 {
33 for (uint32_t code = 0; code <= CODE_MAX; code++) {
34 MessageParcel datas;
35 std::u16string descriptor = BundleMgrHost::GetDescriptor();
36 datas.WriteInterfaceToken(descriptor);
37 datas.WriteBuffer(data, size);
38 datas.RewindRead(0);
39 MessageParcel reply;
40 MessageOption option;
41 BundleMgrHost bundleMgrHost;
42 bundleMgrHost.OnRemoteRequest(code, datas, reply, option);
43 }
44 return true;
45 }
46 }
47
48 // Fuzzer entry point.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)49 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
50 {
51 /* Run your code on data */
52 if (data == nullptr) {
53 return 0;
54 }
55
56 if (size < OHOS::U32_AT_SIZE) {
57 return 0;
58 }
59
60 /* Validate the length of size */
61 if (size > OHOS::FOO_MAX_LEN) {
62 return 0;
63 }
64
65 char* ch = static_cast<char*>(malloc(size + 1));
66 if (ch == nullptr) {
67 return 0;
68 }
69
70 (void)memset_s(ch, size + 1, 0x00, size + 1);
71 if (memcpy_s(ch, size, data, size) != EOK) {
72 free(ch);
73 ch = nullptr;
74 return 0;
75 }
76 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
77 free(ch);
78 ch = nullptr;
79 return 0;
80 }