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 "usbmgrbulkread_fuzzer.h"
17
18 #include "iremote_object.h"
19 #include "usb_errors.h"
20 #include "usb_callback_test.h"
21 #include "usb_common_fuzz.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 {
UsbMgrBulkReadFuzzTest(const uint8_t * data,size_t size)28 bool UsbMgrBulkReadFuzzTest(const uint8_t* data, size_t size)
29 {
30 if (data == nullptr || size < sizeof(USBDevicePipe) || size < OFFSET + sizeof(USBEndpoint)) {
31 USB_HILOGE(MODULE_USB_SERVICE, "data size is insufficient!");
32 return false;
33 }
34 auto[res, pipe, interface] = UsbMgrPrepareFuzzEnv();
35 if (!res) {
36 USB_HILOGE(MODULE_USB_SERVICE, "prepare error");
37 return false;
38 }
39
40 auto& usbSrvClient = UsbSrvClient::GetInstance();
41 sptr<UsbCallbackTest> cb = new UsbCallbackTest();
42 auto ret = usbSrvClient.RegBulkCallback(
43 const_cast<USBDevicePipe &>(pipe), const_cast<UsbInterface &>(interface).GetEndpoints().at(1), cb);
44 if (ret != UEC_OK) {
45 USB_HILOGE(MODULE_USB_SERVICE, "RegBulkCallback failed ret=%{public}d", ret);
46 return false;
47 }
48
49 if (usbSrvClient.BulkRead(reinterpret_cast<USBDevicePipe &>(data),
50 reinterpret_cast<const USBEndpoint &>(std::move(data + OFFSET)),
51 reinterpret_cast<sptr<Ashmem> &>(std::move(data + OFFSET_BYTE))) == UEC_OK) {
52 return false;
53 }
54 return true;
55 }
56 } // USB
57 } // OHOS
58
59 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)60 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
61 {
62 if (size < OHOS::THRESHOLD) {
63 return 0;
64 }
65 /* Run your code on data */
66 OHOS::USB::UsbMgrBulkReadFuzzTest(data, size);
67 return 0;
68 }
69
70