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