1 /*
2 * Copyright (c) 2022-2024 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 <cstddef>
17 #include <cstdint>
18 #include <string>
19 #include <unistd.h>
20 #include <fuzzer/FuzzedDataProvider.h>
21
22 #include "device_manager_impl.h"
23 #include "device_manager.h"
24 #include "device_manager_callback.h"
25 #include "device_discovery_fuzzer.h"
26
27 namespace OHOS {
28 namespace DistributedHardware {
29 namespace {
30 constexpr uint32_t SLEEP_TIME_US = 10 * 1000;
31 }
32
33 class DeviceDiscoveryCallbackTest : public DiscoveryCallback {
34 public:
DeviceDiscoveryCallbackTest()35 DeviceDiscoveryCallbackTest() : DiscoveryCallback() {}
~DeviceDiscoveryCallbackTest()36 virtual ~DeviceDiscoveryCallbackTest() {}
OnDiscoverySuccess(uint16_t subscribeId)37 void OnDiscoverySuccess(uint16_t subscribeId) override {}
OnDiscoveryFailed(uint16_t subscribeId,int32_t failedReason)38 void OnDiscoveryFailed(uint16_t subscribeId, int32_t failedReason) override {}
OnDeviceFound(uint16_t subscribeId,const DmDeviceInfo & deviceInfo)39 void OnDeviceFound(uint16_t subscribeId, const DmDeviceInfo &deviceInfo) override {}
40 };
41
DeviceDiscoveryFuzzTest(const uint8_t * data,size_t size)42 void DeviceDiscoveryFuzzTest(const uint8_t* data, size_t size)
43 {
44 if ((data == nullptr) || (size < (sizeof(uint16_t) + sizeof(uint16_t)))) {
45 return;
46 }
47 std::string bundleName(reinterpret_cast<const char*>(data), size);
48 uint16_t subscriptionId = 22;
49
50 FuzzedDataProvider fdp(data, size);
51 DmSubscribeInfo subInfo;
52 subInfo.subscribeId = fdp.ConsumeIntegral<uint16_t>();
53 subInfo.mode = DM_DISCOVER_MODE_ACTIVE;
54 subInfo.medium = DM_USB;
55 subInfo.isSameAccount = true;
56 subInfo.isWakeRemote = true;
57 if (strncpy_s(subInfo.capability, DM_MAX_DEVICE_CAPABILITY_LEN, "111", DM_MAX_DEVICE_CAPABILITY_LEN) != 0) {
58 return;
59 }
60 std::string extra = "extraInfo";
61
62 std::shared_ptr<DiscoveryCallback> callback = std::make_shared<DeviceDiscoveryCallbackTest>();
63 bundleName = "111";
64 subInfo.subscribeId = subscriptionId;
65 DeviceManager::GetInstance().StartDeviceDiscovery(bundleName, subInfo, extra, callback);
66 usleep(SLEEP_TIME_US);
67 DeviceManager::GetInstance().StopDeviceDiscovery(bundleName, subInfo.subscribeId);
68 usleep(SLEEP_TIME_US);
69 uint16_t subscribeId = fdp.ConsumeIntegral<uint16_t>();
70 DeviceManager::GetInstance().StartDeviceDiscovery(bundleName, subscribeId, extra, callback);
71 usleep(SLEEP_TIME_US);
72 DeviceManager::GetInstance().StopDeviceDiscovery(bundleName, subscribeId);
73 DeviceManager::GetInstance().CheckAPIAccessPermission();
74 DeviceManager::GetInstance().CheckNewAPIAccessPermission();
75 }
76 }
77 }
78
79 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)80 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
81 {
82 /* Run your code on data */
83 OHOS::DistributedHardware::DeviceDiscoveryFuzzTest(data, size);
84 return 0;
85 }
86