1 /*
2 * Copyright (c) 2022 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 "usbmgrclaiminterface_fuzzer.h"
17
18 #include "usb_srv_client.h"
19 #include "usb_errors.h"
20
21 namespace OHOS {
22 const uint32_t OFFSET = 4;
23 constexpr size_t THRESHOLD = 10;
24 namespace USB {
UsbMgrClaimInterfaceFuzzTest(const uint8_t * data,size_t size)25 bool UsbMgrClaimInterfaceFuzzTest(const uint8_t* data, size_t size)
26 {
27 if (data == nullptr || size < sizeof(USBDevicePipe) || size < OFFSET + sizeof(UsbInterface)) {
28 USB_HILOGE(MODULE_USB_SERVICE, "data size is insufficient!");
29 return false;
30 }
31 std::vector<UsbDevice> devList;
32 auto &usbSrvClient = UsbSrvClient::GetInstance();
33 auto ret = usbSrvClient.GetDevices(devList);
34 if (ret != UEC_OK || devList.empty()) {
35 USB_HILOGE(MODULE_USB_SERVICE, "get devices failed ret=%{public}d", ret);
36 return false;
37 }
38
39 USBDevicePipe pipe;
40 UsbDevice device = devList.front();
41 usbSrvClient.RequestRight(device.GetName());
42 ret = usbSrvClient.OpenDevice(device, pipe);
43 if (ret != UEC_OK) {
44 USB_HILOGE(MODULE_USB_SERVICE, "open device failed ret=%{public}d", ret);
45 return false;
46 }
47
48 ret = usbSrvClient.ClaimInterface(reinterpret_cast<USBDevicePipe &>(data),
49 reinterpret_cast<const UsbInterface &>(std::move(data + OFFSET)), true);
50 if (ret == UEC_OK) {
51 return false;
52 }
53 return true;
54 }
55 } // OHOS
56 } // USB
57
58 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)59 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
60 {
61 if (size < OHOS::THRESHOLD) {
62 return 0;
63 }
64 /* Run your code on data */
65 OHOS::USB::UsbMgrClaimInterfaceFuzzTest(data, size);
66 return 0;
67 }
68
69