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 "usbmgrcontroltransfer_fuzzer.h"
17
18 #include "usb_srv_client.h"
19 #include "usb_errors.h"
20
21 using namespace OHOS::HDI::Usb::V1_0;
22 namespace OHOS {
23 const uint32_t OFFSET = 4;
24 constexpr size_t THRESHOLD = 10;
25 namespace USB {
UsbMgrControlTransferFuzzTest(const uint8_t * data,size_t size)26 bool UsbMgrControlTransferFuzzTest(const uint8_t* data, size_t size)
27 {
28 if (data == nullptr || size < sizeof(USBDevicePipe) || size < OFFSET + sizeof(UsbCtrlTransfer)) {
29 USB_HILOGE(MODULE_USB_SERVICE, "data size is insufficient!");
30 return false;
31 }
32 std::vector<UsbDevice> devList;
33 auto &usbSrvClient = UsbSrvClient::GetInstance();
34 auto ret = usbSrvClient.GetDevices(devList);
35 if (ret != UEC_OK || devList.empty()) {
36 USB_HILOGE(MODULE_USB_SERVICE, "get devices failed ret=%{public}d", ret);
37 return false;
38 }
39
40 USBDevicePipe pipe;
41 UsbDevice device = devList.front();
42 usbSrvClient.RequestRight(device.GetName());
43 ret = usbSrvClient.OpenDevice(device, pipe);
44 if (ret != UEC_OK) {
45 USB_HILOGE(MODULE_USB_SERVICE, "open device failed ret=%{public}d", ret);
46 return false;
47 }
48
49 UsbInterface interface = devList.front().GetConfigs().front().GetInterfaces().front();
50 ret = usbSrvClient.ClaimInterface(pipe, interface, true);
51 if (ret != UEC_OK) {
52 USB_HILOGE(MODULE_USB_SERVICE, "ClaimInterface failed ret=%{public}d", ret);
53 return false;
54 }
55
56 std::vector<uint8_t> buf;
57 ret = usbSrvClient.ControlTransfer(reinterpret_cast<USBDevicePipe &>(data),
58 reinterpret_cast<const UsbCtrlTransfer &>(std::move(data + OFFSET)), buf);
59 if (ret == UEC_OK) {
60 return false;
61 }
62 return true;
63 }
64 } // USB
65 } // OHOS
66
67 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)68 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
69 {
70 if (size < OHOS::THRESHOLD) {
71 return 0;
72 }
73 /* Run your code on data */
74 OHOS::USB::UsbMgrControlTransferFuzzTest(data, size);
75 return 0;
76 }
77
78