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 "usbmgrbulkcancel_fuzzer.h"
17
18 #include <array>
19 #include <optional>
20
21 #include "ashmem.h"
22 #include "iremote_object.h"
23 #include "usb_callback_test.h"
24 #include "usb_common_fuzz.h"
25 #include "usb_errors.h"
26
27 namespace {
28 const uint32_t ASHMEM_MAX_SIZE = 1024;
29 const uint32_t MEM_DATA = 1024 * 1024;
30 }
31 namespace OHOS {
32 namespace USB {
GetSharedMem()33 sptr<Ashmem> GetSharedMem()
34 {
35 sptr<Ashmem> asmptr = Ashmem::CreateAshmem("ttashmem001", MEM_DATA);
36 if (asmptr == nullptr) {
37 USB_HILOGE(MODULE_USB_SERVICE, "InitAshmemOne CreateAshmem failed");
38 return nullptr;
39 }
40
41 asmptr->MapReadAndWriteAshmem();
42
43 std::array<uint8_t, ASHMEM_MAX_SIZE> tdata;
44 tdata.fill('Y');
45 uint32_t offset = 0;
46 while (offset < MEM_DATA) {
47 uint32_t tlen = (MEM_DATA - offset) < ASHMEM_MAX_SIZE ? (MEM_DATA - offset) : ASHMEM_MAX_SIZE;
48 asmptr->WriteToAshmem(tdata.data(), tlen, offset);
49 offset += tlen;
50 }
51 return asmptr;
52 }
53
UsbMgrBulkCancelFuzzTest(const uint8_t * data,size_t)54 bool UsbMgrBulkCancelFuzzTest(const uint8_t* data, size_t /* size */)
55 {
56 auto[res, pipe, interface] = UsbMgrPrepareFuzzEnv();
57 if (!res) {
58 USB_HILOGE(MODULE_USB_SERVICE, "prepare error");
59 return false;
60 }
61
62 auto& usbSrvClient = UsbSrvClient::GetInstance();
63 sptr<UsbCallbackTest> cb = new UsbCallbackTest();
64 USBEndpoint point = const_cast<UsbInterface &>(interface).GetEndpoints().at(1);
65 auto ret = usbSrvClient.RegBulkCallback(const_cast<USBDevicePipe &>(pipe), point, cb);
66 if (ret != UEC_OK) {
67 USB_HILOGE(MODULE_USB_SERVICE, "RegBulkCallback failed ret=%{public}d", ret);
68 return false;
69 }
70
71 auto sharedMem = GetSharedMem();
72 if (sharedMem == nullptr) {
73 USB_HILOGE(MODULE_USB_SERVICE, "GetSharedMem failed ret=%{public}d", ret);
74 return false;
75 }
76
77 ret = usbSrvClient.BulkWrite(const_cast<USBDevicePipe &>(pipe), point, sharedMem);
78 if (ret != UEC_OK) {
79 USB_HILOGE(MODULE_USB_SERVICE, "BulkWrite failed ret=%{public}d", ret);
80 return false;
81 }
82
83 if (usbSrvClient.BulkCancel(reinterpret_cast<USBDevicePipe &>(data),
84 reinterpret_cast<const USBEndpoint&>(data)) == UEC_OK) {
85 return false;
86 }
87 return true;
88 }
89 } // USB
90 } // OHOS
91
92 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)93 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
94 {
95 /* Run your code on data */
96 OHOS::USB::UsbMgrBulkCancelFuzzTest(data, size);
97 return 0;
98 }
99