1 /*
2 * Copyright (c) 2023-2025 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 "alloclocaltokenidstub_fuzzer.h"
17
18 #include <sys/types.h>
19 #include <unistd.h>
20 #include <string>
21 #include <thread>
22 #include <vector>
23
24 #undef private
25 #include "accesstoken_manager_service.h"
26 #include "fuzzer/FuzzedDataProvider.h"
27 #include "iaccess_token_manager.h"
28
29 using namespace std;
30 using namespace OHOS::Security::AccessToken;
31 const int CONSTANTS_NUMBER_TWO = 2;
32 static const int32_t ROOT_UID = 0;
33
34 namespace OHOS {
AllocLocalTokenIDStubFuzzTest(const uint8_t * data,size_t size)35 bool AllocLocalTokenIDStubFuzzTest(const uint8_t* data, size_t size)
36 {
37 if ((data == nullptr) || (size == 0)) {
38 return false;
39 }
40
41 FuzzedDataProvider provider(data, size);
42 std::string remoteDeviceID = provider.ConsumeRandomLengthString();
43 AccessTokenID tokenId = provider.ConsumeIntegral<AccessTokenID>();
44
45 MessageParcel inData;
46 inData.WriteInterfaceToken(IAccessTokenManager::GetDescriptor());
47 if (!inData.WriteString(remoteDeviceID) || !inData.WriteUint32(tokenId)) {
48 return false;
49 }
50
51 uint32_t code = static_cast<uint32_t>(
52 IAccessTokenManagerIpcCode::COMMAND_ALLOC_LOCAL_TOKEN_I_D);
53
54 MessageParcel reply;
55 MessageOption option;
56 bool enable = ((provider.ConsumeIntegral<int32_t>() % CONSTANTS_NUMBER_TWO) == 0);
57 if (enable) {
58 setuid(CONSTANTS_NUMBER_TWO);
59 }
60 DelayedSingleton<AccessTokenManagerService>::GetInstance()->OnRemoteRequest(code, inData, reply, option);
61 setuid(ROOT_UID);
62
63 return true;
64 }
65 } // namespace OHOS
66
67 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)68 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
69 {
70 /* Run your code on data */
71 OHOS::AllocLocalTokenIDStubFuzzTest(data, size);
72 return 0;
73 }
74