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 #define private public
16 #define protected public
17 #include "fuzzer/FuzzedDataProvider.h"
18 #include "scanusbmanager_fuzzer.h"
19 #include "scan_usb_manager.h"
20 #include "scan_service_ability.h"
21
22
23 namespace OHOS {
24 namespace Scan {
25 constexpr uint8_t MAX_STRING_LENGTH = 255;
26 constexpr size_t FOO_MAX_LEN = 1024;
27 constexpr size_t U32_AT_SIZE = 4;
28
TestDealUsbDevStatusChange(const uint8_t * data,size_t size,FuzzedDataProvider * dataProvider)29 void TestDealUsbDevStatusChange(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
30 {
31 DelayedSingleton<ScanUsbManager>::GetInstance()->Init();
32 DelayedSingleton<ScanUsbManager>::GetInstance()->RefreshUsbDevice();
33 std::string devStr = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
34 bool isAttach = dataProvider->ConsumeBool();
35 std::string devStrOne = "2-3";
36 DelayedSingleton<ScanUsbManager>::GetInstance()->DealUsbDevStatusChange(devStr, isAttach);
37 DelayedSingleton<ScanUsbManager>::GetInstance()->DealUsbDevStatusChange(devStrOne, true);
38 DelayedSingleton<ScanUsbManager>::GetInstance()->DealUsbDevStatusChange(devStrOne, false);
39 USB::USBDevicePipe usbDevicePipe;
40 DelayedSingleton<ScanUsbManager>::GetInstance()->GetDeviceSerialNumber(usbDevicePipe);
41 }
42
TestUsbUpdateUsbScannerId(const uint8_t * data,size_t size,FuzzedDataProvider * dataProvider)43 void TestUsbUpdateUsbScannerId(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
44 {
45 std::string usbDeviceName = "2-4";
46 std::string serialNumber = "QWERTY";
47 ScanDeviceInfo scanDeviceInfo;
48 scanDeviceInfo.deviceId = "pantu:libusb:002:004";
49 scanDeviceInfo.serialNumber = serialNumber;
50 ScanServiceAbility::saneGetUsbDeviceInfoMap[serialNumber] = scanDeviceInfo;
51 ScanUsbManager::GetInstance()->UpdateUsbScannerId(serialNumber, usbDeviceName);
52
53 std::string fuzzUsbDeviceName = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
54 std::string fuzzSerialNumber = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
55 ScanDeviceInfo fuzzScanDeviceInfo;
56 scanDeviceInfo.deviceId = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
57 scanDeviceInfo.serialNumber = fuzzSerialNumber;
58 ScanServiceAbility::saneGetUsbDeviceInfoMap[fuzzSerialNumber] = fuzzScanDeviceInfo;
59 ScanUsbManager::GetInstance()->UpdateUsbScannerId(fuzzSerialNumber, fuzzUsbDeviceName);
60 }
61
TestUsbDisConnectUsbScanner(const uint8_t * data,size_t size,FuzzedDataProvider * dataProvider)62 void TestUsbDisConnectUsbScanner(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
63 {
64 std::string usbDeviceName = "2-3";
65 std::string serialNumber = "ASDFGH";
66 ScanDeviceInfo scanDeviceInfo;
67 scanDeviceInfo.deviceId = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
68 scanDeviceInfo.serialNumber = serialNumber;
69 ScanServiceAbility::saneGetUsbDeviceInfoMap[serialNumber] = scanDeviceInfo;
70 ScanUsbManager::GetInstance()->DisConnectUsbScanner(usbDeviceName);
71
72 std::string fuzzUsbDeviceName = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
73 std::string fuzzSerialNumber = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
74 ScanDeviceInfo fuzzScanDeviceInfo;
75 scanDeviceInfo.deviceId = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
76 scanDeviceInfo.serialNumber = fuzzSerialNumber;
77 ScanServiceAbility::saneGetUsbDeviceInfoMap[fuzzSerialNumber] = fuzzScanDeviceInfo;
78 ScanUsbManager::GetInstance()->DisConnectUsbScanner(fuzzUsbDeviceName);
79 }
80 }
81 }
82
83 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)84 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
85 {
86 if (data == nullptr) {
87 return 0;
88 }
89
90 if (size < OHOS::Scan::U32_AT_SIZE || size > OHOS::Scan::FOO_MAX_LEN) {
91 return 0;
92 }
93 FuzzedDataProvider dataProvider(data, size);
94 OHOS::Scan::TestDealUsbDevStatusChange(data, size, &dataProvider);
95 OHOS::Scan::TestUsbUpdateUsbScannerId(data, size, &dataProvider);
96 OHOS::Scan::TestUsbDisConnectUsbScanner(data, size, &dataProvider);
97
98 return 0;
99 }
100
101