1 /*
2 * Copyright (c) 2023 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 #include "iostream"
16 #include "string"
17 #include "securec.h"
18 #include "usb_bus_extension.h"
19 #include "usb_driver_info.h"
20 #include "hilog_wrapper.h"
21 #include "usbextension_fuzzer.h"
22 namespace OHOS {
23 namespace ExternalDeviceManager {
24 using namespace std;
25
UsbDriverInfoUnSerializeFuzzer(const uint8_t * data,size_t size)26 bool UsbDriverInfoUnSerializeFuzzer(const uint8_t *data, size_t size)
27 {
28 string drvInfoStr(reinterpret_cast<const char *>(data));
29 if (drvInfoStr.size() == 0) {
30 return false;
31 }
32
33 UsbDriverInfo usbDevInfo;
34 usbDevInfo.UnSerialize(drvInfoStr);
35 return true;
36 }
ParseDriverInfoTest(const uint8_t * data,size_t size)37 bool ParseDriverInfoTest(const uint8_t *data, size_t size)
38 {
39 auto bus = make_shared<UsbBusExtension>();
40 string str(reinterpret_cast<const char *>(data));
41 map<string, string> metadata = {
42 {"vid", str},
43 {"pid", str}
44 };
45 auto ret = bus->ParseDriverInfo(metadata);
46 return true;
47 }
48
49 using TestFuncDef = bool (*)(const uint8_t *data, size_t size);
50
51 TestFuncDef g_allTestFunc[] = {
52 UsbDriverInfoUnSerializeFuzzer,
53 ParseDriverInfoTest,
54 };
55
DoSomethingInterestingWithMyAPI(const uint8_t * rawData,size_t size)56 bool DoSomethingInterestingWithMyAPI(const uint8_t *rawData, size_t size)
57 {
58 if (size < sizeof(int)) {
59 return false;
60 }
61 const int index = *(static_cast<const uint8_t *>(rawData));
62 rawData += sizeof(int);
63 size -= sizeof(int);
64 int funcCount = sizeof(g_allTestFunc) / sizeof(g_allTestFunc[0]);
65
66 auto func = g_allTestFunc[index % funcCount];
67 if (func != nullptr) {
68 auto ret = func(rawData, size);
69 return ret;
70 }
71 return false;
72 }
73 } // namespace ExtDevMgr
74 } // namespace OHOS
75
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)76 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
77 {
78 OHOS::ExternalDeviceManager::DoSomethingInterestingWithMyAPI(data, size);
79 return 0;
80 }