1 /*
2 * Copyright (c) 2025 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 "updateuserpolicystub_fuzzer.h"
17
18 #include <string>
19 #include <thread>
20 #include <vector>
21 #undef private
22 #include "access_token.h"
23 #include "accesstoken_fuzzdata.h"
24 #include "accesstoken_kit.h"
25 #include "accesstoken_manager_service.h"
26 #include "i_accesstoken_manager.h"
27 #include "nativetoken_kit.h"
28 #include "token_setproc.h"
29
30 using namespace std;
31 using namespace OHOS::Security::AccessToken;
32 static AccessTokenID g_selfTokenId = 0;
33 static uint64_t g_mockTokenId = 0;
34 const int32_t CONSTANTS_NUMBER_TWO = 2;
35
36 namespace OHOS {
GetNativeToken()37 void GetNativeToken()
38 {
39 if (g_mockTokenId != 0) {
40 SetSelfTokenID(g_mockTokenId);
41 return;
42 }
43 const char **perms = new const char *[1];
44 perms[0] = "ohos.permission.GET_SENSITIVE_PERMISSIONS";
45
46 NativeTokenInfoParams infoInstance = {
47 .dcapsNum = 0,
48 .permsNum = 1,
49 .aclsNum = 0,
50 .dcaps = nullptr,
51 .perms = perms,
52 .acls = nullptr,
53 .processName = "updateuserpolicystub_fuzzer_test",
54 .aplStr = "system_core",
55 };
56
57 g_mockTokenId = GetAccessTokenId(&infoInstance);
58 g_selfTokenId = GetSelfTokenID();
59 SetSelfTokenID(g_mockTokenId);
60 AccessTokenKit::ReloadNativeTokenInfo();
61 delete[] perms;
62 }
UpdateUserPolicyStubFuzzTest(const uint8_t * data,size_t size)63 bool UpdateUserPolicyStubFuzzTest(const uint8_t* data, size_t size)
64 {
65 if ((data == nullptr) || (size == 0)) {
66 return false;
67 }
68
69 AccessTokenFuzzData fuzzData(data, size);
70
71 UserState userList;
72 userList.userId = fuzzData.GetData<int32_t>();
73 userList.isActive = fuzzData.GenerateStochasticBool();
74
75 MessageParcel datas;
76 datas.WriteInterfaceToken(IAccessTokenManager::GetDescriptor());
77 if (!datas.WriteUint32(1)) {
78 return false;
79 }
80 if (!datas.WriteInt32(userList.userId)) {
81 return false;
82 }
83 if (!datas.WriteBool(userList.isActive)) {
84 return false;
85 }
86
87 uint32_t code = static_cast<uint32_t>(
88 AccessTokenInterfaceCode::UPDATE_USER_POLICY);
89
90 MessageParcel reply;
91 MessageOption option;
92 bool enable = ((size % CONSTANTS_NUMBER_TWO) == 0);
93 if (enable) {
94 GetNativeToken();
95 } else {
96 SetSelfTokenID(g_selfTokenId);
97 }
98 DelayedSingleton<AccessTokenManagerService>::GetInstance()->OnRemoteRequest(code, datas, reply, option);
99
100 return true;
101 }
102 } // namespace OHOS
103
104 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)105 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
106 {
107 /* Run your code on data */
108 OHOS::UpdateUserPolicyStubFuzzTest(data, size);
109 return 0;
110 }
111