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 Metadata vids;
42 Metadata pids;
43 vids.name = "vid";
44 vids.value = str;
45 pids.name = "pid";
46 pids.value = str;
47 vector<Metadata> metadata = {vids, pids};
48 auto ret = bus->ParseDriverInfo(metadata);
49 return true;
50 }
51
52 using TestFuncDef = bool (*)(const uint8_t *data, size_t size);
53
54 TestFuncDef g_allTestFunc[] = {
55 UsbDriverInfoUnSerializeFuzzer,
56 ParseDriverInfoTest,
57 };
58
DoSomethingInterestingWithMyAPI(const uint8_t * rawData,size_t size)59 bool DoSomethingInterestingWithMyAPI(const uint8_t *rawData, size_t size)
60 {
61 if (size < sizeof(int)) {
62 return false;
63 }
64 const int index = *(static_cast<const uint8_t *>(rawData));
65 rawData += sizeof(int);
66 size -= sizeof(int);
67 int funcCount = sizeof(g_allTestFunc) / sizeof(g_allTestFunc[0]);
68
69 auto func = g_allTestFunc[index % funcCount];
70 if (func != nullptr) {
71 auto ret = func(rawData, size);
72 return ret;
73 }
74 return false;
75 }
76 } // namespace ExtDevMgr
77 } // namespace OHOS
78
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)79 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
80 {
81 OHOS::ExternalDeviceManager::DoSomethingInterestingWithMyAPI(data, size);
82 return 0;
83 }