1 /*
2 * Copyright (c) 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 "systemcmdchannelstub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "system_cmd_channel_stub.h"
22 #include "message_parcel.h"
23
24 using namespace OHOS::MiscServices;
25 namespace OHOS {
26 constexpr size_t THRESHOLD = 10;
27 constexpr int32_t OFFSET = 4;
28 constexpr int32_t PRIVATEDATAVALUE = 100;
29 const std::u16string AGENTSTUB_INTERFACE_TOKEN = u"ohos.miscservices.inputmethod.ISystemCmdChannel";
ConvertToUint32(const uint8_t * ptr)30 uint32_t ConvertToUint32(const uint8_t *ptr)
31 {
32 if (ptr == nullptr) {
33 return 0;
34 }
35 uint32_t bigVar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
36 return bigVar;
37 }
FuzzSystemCmdChannelStub(const uint8_t * rawData,size_t size)38 bool FuzzSystemCmdChannelStub(const uint8_t *rawData, size_t size)
39 {
40 bool fuzzedBool = static_cast<bool>(rawData[0] % 2);
41 auto fuzzedUint32 = static_cast<uint32_t>(size);
42
43 uint32_t code = ConvertToUint32(rawData);
44 rawData = rawData + OFFSET;
45 size = size - OFFSET;
46
47 SysPanelStatus sysPanelStatus = {fuzzedBool, 0, fuzzedUint32, fuzzedUint32};
48
49 std::unordered_map <std::string, PrivateDataValue> privateCommand;
50 PrivateDataValue privateDataValue1 = std::string("stringValue");
51 PrivateDataValue privateDataValue2 = fuzzedBool;
52 PrivateDataValue privateDataValue3 = PRIVATEDATAVALUE;
53 privateCommand.emplace("value1", privateDataValue1);
54 privateCommand.emplace("value2", privateDataValue2);
55 privateCommand.emplace("value3", privateDataValue3);
56
57 MessageParcel data;
58 data.WriteInterfaceToken(AGENTSTUB_INTERFACE_TOKEN);
59 data.WriteBuffer(rawData, size);
60 data.RewindRead(0);
61 MessageParcel reply;
62 MessageOption option;
63
64 sptr <SystemCmdChannelStub> stub = new SystemCmdChannelStub();
65 stub->SendPrivateCommand(privateCommand);
66 stub->NotifyPanelStatus(sysPanelStatus);
67 stub->OnRemoteRequest(code, data, reply, option);
68 return true;
69 }
70 } // namespace OHOS
71 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)72 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
73 {
74 if (size < OHOS::THRESHOLD) {
75 return 0;
76 }
77 /* Run your code on data */
78 OHOS::FuzzSystemCmdChannelStub(data, size);
79 return 0;
80 }