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 "usbmgrbulkwrite_fuzzer.h"
17
18 #include "iremote_object.h"
19 #include "usb_callback_test.h"
20 #include "usb_common_fuzz.h"
21 #include "usb_errors.h"
22
23 namespace OHOS {
24 const uint32_t OFFSET = 4;
25 const uint32_t OFFSET_BYTE = 8;
26 constexpr size_t THRESHOLD = 10;
27 namespace USB {
UsbMgrBulkWriteFuzzTest(const uint8_t * data,size_t)28 bool UsbMgrBulkWriteFuzzTest(const uint8_t* data, size_t /* size */)
29 {
30 auto[res, pipe, interface] = UsbMgrPrepareFuzzEnv();
31 if (!res) {
32 USB_HILOGE(MODULE_USB_SERVICE, "prepare error");
33 return false;
34 }
35
36 auto& usbSrvClient = UsbSrvClient::GetInstance();
37 sptr<UsbCallbackTest> cb = new UsbCallbackTest();
38 auto ret = usbSrvClient.RegBulkCallback(
39 const_cast<USBDevicePipe &>(pipe), const_cast<UsbInterface &>(interface).GetEndpoints().at(1), cb);
40 if (ret != UEC_OK) {
41 USB_HILOGE(MODULE_USB_SERVICE, "RegBulkCallback failed ret=%{public}d", ret);
42 return false;
43 }
44
45 if (usbSrvClient.BulkWrite(reinterpret_cast<USBDevicePipe &>(data),
46 reinterpret_cast<const USBEndpoint&>(std::move(data + OFFSET)),
47 reinterpret_cast<sptr<Ashmem>&>(std::move(data + OFFSET_BYTE))) == UEC_OK) {
48 return false;
49 }
50 return true;
51 }
52 } // USB
53 } // OHOS
54
55 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)56 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
57 {
58 if (size < OHOS::THRESHOLD) {
59 return 0;
60 }
61 /* Run your code on data */
62 OHOS::USB::UsbMgrBulkWriteFuzzTest(data, size);
63 return 0;
64 }
65
66